JPH02105362A - Tape recorder - Google Patents

Abstract

PURPOSE:To attain a simple and compact constitution of a tape recorder by using a cam gear which is driven by a magnetic tape driving motor to actuate a control member and performing the switch a stop state and a forward/reverse reproduction state. CONSTITUTION:In a forward reproduction state, a toothless part 85b of a cam gear 85 engages with a relay gear 84b and a pinch roller 5 is pressed to a capstan 36 to drive a tape 3 in the direction A. When the forward reproduction state is changed to a reverse reproduction state, a solenoid 129 is energized and therefore the adsorption of an adsorbing bar 131 is released. Thus a solenoid arm turns to rotate the position where the gear 85 engages with the gear 84b up to a position 85c from the part 85b via a magnetic tape driving motor device. Thus a switch lever 135 and a control rod 137 move to press a pinch roller 6 to a capstan 37 which is revolved by a magnet roller 63. Then a magnetic tape 3 is driven toward an arrow B. In such a way, the switch is possible between a stop state and a forward/reverse reproduction state and a simple and compact constitution is attained for a tape recorder.

Description

DETAILED DESCRIPTION OF THE INVENTION 67,-7 Industrial Application Field The present invention relates to a tape recorder whose mechanism can be miniaturized.

2. Description of the Related Art In recent years, there has been a significant demand for tape recorders to be smaller, more power efficient, and lower in price.

Conventionally, side A and 8 were recorded without turning over the tape cassette.
In a reverse type tape recorder capable of playing back a magnetic tape, a first pinch roller that runs the magnetic tape in a first direction is separated from a first capstan, and a second pinch roller is moved away from a first capstan.
The second pinch roller is moved in the direction of the second capstan and separated from the second capstan, and the second pinch roller is moved in the direction of the first pinch roller. a stopped state in which the magnetic head and the tape pad are separated from each other corresponding to the second running; a first running state in which the first pinch roller is pressed against the first capstan and the magnetic head and the tape pad are in pressure contact; It has a second running state in which the second pinch roller is in pressure contact with the second capstan and the magnetic head and the tape pad are in pressure contact, and these states are controlled by using the first control plate in the running direction of the tape. This was done by moving the tape in the perpendicular direction and moving the second control plate in the running direction of the tape.

Another example of a control panel is one in which one control board is moved from the first position of the stopped state to the second position to control the first running state, and the control board is moved to the third position to control the second running state. is known, but this control board is driven by a drive motor that is separate from the motor that runs the tape.

In addition, when the conventional fast-forward drive rotary body is rotated in the first direction, the rotation is transmitted to the first reel stand to perform the first fast-forward operation, and when it is rotated in the second direction, the rotation is transmitted to the second reel stand. In a tape recorder having a fast-forward transmitting rotary body to which a rotational load is applied so as to perform a second fast-forward operation by transmitting rotation, the fast-forward transmitting rotary body and the first fast-forward transmitting body are connected in a tape running state such as playback. Although the second reel stand is in a non-transmission state, the fast-forward driving rotor and the fast-forward transmitting rotor are in a transmitting state, and therefore rotate even during tape running during playback and the like.

As another example, the fast-forward driving rotary body and the fast-forward transmitting rotary body are controlled so as not to transmit data in the tape running state such as during playback, but this control may be carried out by a drive separate from the drive means that performs the playback operation. This was done through means.

Conventional tape recorders, in particular, perform fast-forward operation with the pinch roller and capstan separated and the magnetic head and magnetic tape in contact, and automatically enter the playback mode when a song interval is detected. Separate drive means are used to detect the inter-musical interval, cancel the fast-forwarding operation, and after canceling the fast-forwarding operation, to control the music to the playback state, and to control from the stop state to the playback state.

A, without having to turn over a conventional tape cassette.
The erasing operation of a reverse type tape recorder capable of recording and reproducing images is performed by bringing an erasing head composed of a permanent magnet into contact with the magnetic tape only during recording, and
Erase operation in the direction of .

In a device in which switching of the erasing operation in the second direction can be electromagnetically controlled using a solenoid or the like, the first control means controls the switching from the stopped state to the tape running state, and the first control means controls the erasing operation in the first direction and the second direction in the tape running state. This constitutes a second control means for switching the tape running in the first direction. The erasing operation is performed only during recording by controlling the second control means, solenoid means, etc., and the first. The erasing operation in the second direction was switched.

Problems to be Solved by the Invention However, in the conventional tape recorder, 11,100 control plates and a second control plate are used to change the state from the stopped state to the tape running state and the first . Since the switching control of the second running state is performed,
These parts overlap, making the entire device thicker, resulting in a larger number of cut parts, resulting in a more complex configuration and higher price. In addition, one control board is connected to the first control board. Second. Since the drive for moving the tape to the third position was performed by a drive motor separate from the motor for running the tape, there was a problem that the entire device became large and expensive.

In addition, since the fast-forward transmission rotor to which a rotational load is applied is rotated even during tape running, such as during playback, there is a problem in that the rotational load on the motor becomes large and current consumption increases. In addition, in order to solve the problem mentioned above, the fast-forward drive rotary body and the fast-forward drive rotary body were controlled so that they were not transmitting power during the tape running state such as during playback, but this control was Since this operation was performed using a drive means separate from the drive means for performing the operation, there were problems such as a complicated configuration, an expensive device, and a large device size. This was especially noticeable in devices that were electromagnetically controlled using solenoids and the like.

In addition, since the driving means was used to detect the interval between songs during fast-forwarding, cancel the fast-forwarding operation, and then control the playback state after canceling the fast-forwarding operation, as well as the means to control from the stopped state to the playback state, the entire device There were problems in that the structure was large, complicated, and expensive. This was especially noticeable in devices that were electromagnetically controlled using solenoids and the like.

Also, a first control means for controlling from a stopped state to a tape running state, and a first direction in the tape running state.

a second control means for switching the tape running in a second direction; Since the erasing operation is performed only during recording by controlling with the second control means, solenoid means, etc., there is a problem that the structure becomes complicated, bulky, and expensive.

Therefore, an object of the present invention is to change the tape running state from the stopped state to the first . It is an object of the present invention to provide a tape recorder in which the configuration for controlling switching of a second running state is reduced in size, and the configuration is simple and inexpensive.

The second purpose is to move the fast-forward drive rotating body to the first. The first direction is rotated in the second direction and the second direction is rotated. A simple and inexpensive control system prevents the rotational load from being applied to the motor during tape running, such as during playback, of a fast-forward transmission rotating body that is given a rotational load for transmitting rotation to a second reel stand. The purpose is to provide tape recorders.

A third object is to provide a tape recorder which is compact and has a simple configuration and is inexpensive, with control for detecting an interval between songs during fast-forwarding, canceling the fast-forwarding operation, and returning to a playback state after canceling the fast-forwarding operation.

The fourth objective is to provide a tape recorder that is compact in size and has a simple configuration in which the erasing operation of a reverse type tape recorder is performed only during recording using an erasing head made of a permanent magnet, and is inexpensive. It's about doing.

Means for Solving the Problems The tape recorder of the present invention has a tape recorder that runs a magnetic tape in a first degree and a second direction. yl' of the second traveling means and
r1. A control member that moves to a first position in a stopped state, a second position in a first running state, and a third position in a second running state to control a second traveling means; The member is attached to the above-mentioned No. 1. cam means for driving to the second and third positions; Second
．． The first position corresponds to the third position. Second. a cam gear having a third toothless portion; a drive gear that meshes with the cam gear and is linked to a tape running motor; a non-meshing state and a meshing state in which the cam gear is controlled and the toothless portion is located on the drive gear; The invention is characterized by comprising a trigger means.

Further, the tape recorder of the present invention includes a tape running means for running a magnetic tape, and a control member that moves to a first position where the tape is in a stopped state and a second position where the tape is running to control the tape running means. , a first cam means for driving this control member, a cam control means for controlling this cam means, a fast-forward drive rotary body that rotates in the direction of gl, ii2 in conjunction with a motor, and from this fast-forward drive rotary body. When the rotation is transmitted and this fast-forward drive rotating body rotates in the first direction, the rotation is transmitted to the first or second reel stand to perform the first fast-forward operation of the magnetic tape, and when it rotates in the second direction, the rotation is transmitted to the first or second reel stand. 2 or a fast-feed transmitting rotating body supported by a support member with a rotational load applied thereto so as to transmit rotation to the first reel stand and move to perform a second fast-feed operation; a fast-forward control member that sets rotational transmission from the fast-forward driving rotary body to the fast-forward transmitting rotary body in a transmitting state and a non-transmitting state; The second cam means is characterized in that the second cam means and the first cam means are integrally constructed.

Further, the tape recorder of the present invention is provided with a biasing means for biasing and operating the fast-forward control member in the above-mentioned tape recorder in a direction in which it is in a non-transmission state, and the control member is activated by the first cam means. When moving from the second position to the first position, the second cam means controls the fast-forwarding control member against the urging means, and when the control member is in the first position, fast-forwarding is transmitted from the fast-forwarding drive rotating body. The rotation is transmitted to the rotating body, and when the cam control means is operated from the first or second fast-forwarding state, the first or second fast-forwarding state is instantly canceled by the urging means. The second cam means is associated with the rapid feed control member, and the first cam means is associated with the rapid feed control member. The present invention is characterized in that the second fast-forward operation is performed with the magnetic tape in contact with the magnetic head.

Further, the tape recorder of the present invention has a magnetic tape that is first inserted into the tape recorder. first and second traveling means for traveling in a second direction; A control member that moves to a first position in a stopped state, a second position in a first running state, and a third position in a second running state to control a second traveling means; Move the member to the above 1st degree 14-/2nd point. movement control means for moving the magnetic tape to the first position; and a movement control means for moving the magnetic tape to the first position. The first magnetic head is provided on the upstream side of the magnetic head in the second running state, and is composed of a permanent magnet.
．． To the second erasure, this first. An erasing head control member that controls the second erasing head to be in a separate position and a contact position with respect to the magnetic tape, and a connection that selectively makes the erasing head control member and the control member non-interlocked during playback and interlocked during recording. means is provided, and the erasing head control member is interlocked with the control member by the coupling means only during recording, so that the control member is in the first position and the erase head control member is in the first position. From the state where the second erasing head is separated from the magnetic tape, in the state of the second position, the above-mentioned first erasing is performed. Only the throat is in contact with the above-mentioned magnetic tape, and in the state of the third position, the above-mentioned second erasing is performed. The device is characterized in that it is configured so that only the head comes into contact with it.

Effects The present invention has the following effects due to the above-mentioned configuration.

A tape recorder according to a first aspect of the present invention includes the above-mentioned control section 1E.
i,,-; the material is in a stopped state and the first. Since the second running state can be switched, the configuration can be simplified and downsized.

Furthermore, since this control member is actuated by the cam gear, the running state can be switched by the magnetic tape running motor.

In the tape recorder according to the second aspect of the present invention, the fast-forward transmitting rotary body and the fast-forward driving rotary body are made non-transmissive in a tape running state such as playback, so that the load on the motor is reduced in this tape running state. Furthermore, since the first cam means and the second cam means are integrated, they can be controlled by one trigger means.

In the tape recorder according to claim 3, when the trigger means is operated during a fast-forward operation, the urging means instantly cancels the fast-forward operation and then starts the playback operation. You can play it from scratch. Furthermore, since the first cam means and the second cam means are integrated, they can be controlled by one trigger means.

In the tape recorder according to a fourth aspect of the present invention, the erasing head control member is interlocked with the control member only during recording, and the first erasing head is operated on the magnetic tape during the first running, and the second erasing head is operated on the magnetic tape during the second running. Since the erasing operation is performed by contact, the configuration is simplified.

EXAMPLES Hereinafter, examples of the present invention will be described in detail with reference to the drawings. 1 to 28 show an embodiment of the tape recorder of the present invention.

Figures 1 to 3 show the external appearance of the main parts.
The figure is a plan view, FIG. 2 is a rear view of the tape cassette as seen from the rear direction, and FIG. 3 is a rear view. Figures 4 to 8 are side views of the tape cassette as viewed from the side, showing the state in which the tape cassette is attached to and detached from the magnetic tape running state, and Figures 9 to 26 show the magnetic tape running operation. The schematic plan view and FIGS. 26 to 28 are partial sectional views showing a gear train that transmits rotation.

In the figure, -1 is an upper substrate made of a conductive metal plate, which is stored in a storage section 2C that stores a winding section (not shown) in which the magnetic tape 3 of the tape cassette 2 is wound around a pair of reel hubs 2a and 2b. The magnetic head 4 of the tape cassette 2, the first . A notch 1a is formed so as to escape an insertion portion 2d which is thicker than the storage portion 2c and has an opening (not shown) into which the second pinch roller 6.6 is inserted. Reference numeral 7 denotes a lower substrate, which is configured along the insertion portion 2d and has a support (not shown) with a gap from the upper substrate 1.
and are fixed to each other by a plurality of screws 8. 9゜1
o is the first. The second holder support is fixed to the upper substrate 1, and the holder main body 11 is rotatably supported by shaft portions 9a and 10a.

The holder body 11 is fixed at both ends with screws 12.13, and has first and second holders 14.15 for storing the tape cassette 2, and the magnetic head 4 is fixed to both ends with screws 12.13.
6.17. Above 1. The second pinch roller 6.6 is connected to the pair of shafts 18 of the holder body 11.
．． 19, which is configured to be rotatable. It is rotatably mounted on the shaft 22.23 of the second pinch roller arm 20.21. 24 is a pad shifter, which is connected to the shaft 1818 above.
The pinch roller arm 2o is configured to be rotatable together with the first pinch roller arm 2o, and the tip end portion 24& is configured to cover the magnetic head 4. As shown in FIGS. 2 and 22, the tip portion 241L is a tooth-shaped protrusion 24b located at the first and second cut portions 4b and 4C formed on the magnetic tape contact surface 4a of the magnetic head 4. , 24c are formed. These projections 24b, 24C [the tape cassette 2
A tape pad 26 provided on a leaf spring 26 that has
The tape pad 26 is configured to contact the magnetic tape 3 while avoiding it in the width direction, and to control the tape pad 26 to press against the magnetic tape contact surface 4a of the magnetic pad 4 and to separate it against the leaf spring 26. However, the magnetic tape 3 is controlled to be in pressure contact with the magnetic tape contact surface 4a and in a non-pressure contact manner. 27 and 28 are the first. A second pinch roller spring 27 is inserted into the shaft 18, 19, and the first pinch roller spring 27 has one end 27a connected to the first pinch roller arm 2.
The other end 271) is suspended on the protrusion 20a of the pad shifter 24, and the first 19 l
\-.

The pinch roller arm is biased clockwise in FIG. 20, and the pad shifter 24 is biased counterclockwise. The second pinch roller spring 28 has one end 28 & suspended from the projection 21 a of the second pinch roller arm 21 and the other end 28 b from the projection 11 a of the holder main body 11 . is biased counterclockwise in Fig. 2o. Further, the pad shifter 24 is inserted into the shaft 18 with a small clearance to the shaft 18 with respect to an insertion portion 248 formed approximately at the center in the width direction of the magnetic tape 3. A large clearance is provided to the shaft 18 with respect to the insertion portion 24f. Therefore, even if the attachment of the magnetic heald 4 to the holder main body 11 changes due to variations or the like, the pad shifter 24 can be rotated smoothly, and the tape pad 26 as shown in FIG. The structure is such that pressure contact with the magnetic tape contact surface 4a can be carried out reliably. 29.30 is the 1st. In the second erasing head, a part of the contact surfaces 29a and 30a to the magnetic tape 3 are composed of permanent magnets, and the first erasing head 29 corresponds to the magnetic tape 3 traveling in the direction indicated by the arrow. The second erasing head 3Q is configured to perform the erasing operation in response to traveling in the direction of arrow B.

The first of these. The construction of the second erase head 29,30 is well known and will not be described in detail. The first erasing head 29
is rotatably provided on the shaft 31 of the holder body 11, and is biased counterclockwise in FIG.
1 (shown in FIGS. 7 and 8). The second erasing head 30 is rotatably mounted on the shaft 33 of the pad shifter 24, and is biased clockwise in FIG. 20 by the second erasing head spring 34, so that the rear part 301) (7th
8). Further, the holder main body 11 is biased clockwise in FIG. 4 by a spring 36, and a positioning portion 14a of the first holder 14 and a positioning portion (not shown) of the second holder 16 are provided. The tape cassette 2 as shown in FIGS. 4 and 7, in which the tape cassette 2 is in contact with the upper substrate 1, is maintained at the running position of the magnetic tape 3. 36.37
is the first. With the second capstan, the first. It has an integral second flywheel 38,39. The first capstan 36 has a first ten metal 4o and a first lower metal 4.
111'i: Rotatably provided. This first upper metal 40 is held in its normal size by a first metal housing 42 fixed to the lower substrate 7, and the first lower metal 41 is a first metal support plate formed of an elastic metal plate. 43
is fixed. Further, the second capstan 37 is rotatably provided on the second upper metal 44 and the second lower metal 46. This second upper metal 44 is held in its normal size by a second metal housing 46 fixed to the lower substrate 7, and the second lower metal 46 is a second metal support plate formed of an elastic metal plate. It is fixed at 47. The first metal support plate 43 is attached to the lower base 22 and the first metal support plate 43 is fixed to the lower base 22/plate 7. Screw 5 to the second pillar 48.49
It is configured to be fixed at 0.61. A third elongated hole 430 formed in the twisted first metal support plate 43
An eccentric portion 521L of the third support column 62 provided on the lower substrate 7 is inserted into.

The second metal support plate 47 is a fourth metal support plate 47 fixed to the lower substrate 7, similar to the first metal support plate 43. It is configured to be fixed to the sixth support column 53.64 (see FIG. 20) with a screw 66.6i6. Further, the third elongated hole 47a formed in the second metal support plate 47 [is the third long hole 47a].
Eccentric portion 67 of the sixth support 67 formed similarly to the support of
a has been inserted.

Above 1. The above-mentioned first part of the second metal support plate 43.47.
The area around the fixing part of the second lower metal 41.45 is cut out in a 0-shape. The second lower metal 41.45 is the first metal. Tongue-shaped portion 43d of second metal support plate 43.47
, 47b. Above 1. The second metal support 23,\-7 plate 43.47 is made of an elastic metal plate, so the second metal support 23, \-7 plate 43, 47 is made of an elastic metal plate. The above first metal 41.46 corresponds to the second lower metal 41.46. When a load is applied to the second capstans 36 and 37 in the thrust direction, the tongue portions 43d.

47b is configured to bend.

68 is a motor device, a yoke to which a magnet is fixed;
It has a magnet rotor 63 composed of a boss 62 that holds a rotating shaft 61, a motor board 64 having a plurality of coils (not shown), and a back yoke, and an electric control circuit means (not shown) is connected to the magnet rotor. is configured to rotate clockwise and counterclockwise. These configurations are well-known methods and will not be described in detail.

The motor board 64 is fixed to a plurality of pillars fixedly integrally molded with the upper substrate 1 from a resin material with a plurality of screws To.

72 is a relay pulley, and metal 7 is connected to the shaft 73 of the upper board 1.
The magnet rotor 6 is provided rotatably together with the magnet rotor 6 by a motor belt 76 suspended from the large diameter portion 72a and the pulley portion of the magnet rotor 63 of the motor device 68.
3 rotations are transmitted. A main pulley 76 is rotatably provided on the shaft 77 of the upper substrate 1, and has a drive gear 761L. This main pulley 76, the first flywheel 38. The second flywheel 39 is configured such that 20 rotations of the relay boot 9 are transmitted from the small diameter portion 72b via the belt 78.

A guide pulley 79 is rotatably provided on the shaft 8o of the lower substrate 7, and regulates the position of the belt 78 as shown in FIG.

A first relay gear 81 is rotatably provided on the shaft 82 of the upper substrate 1, and a second relay gear 81 is rotatably provided on the shaft 83 of the upper substrate 1. The drive gear 76a transmits the signal to the gear 84.
and the second relay gear 840 and the large diameter gear 841L [in mesh with each other].

A cam gear 86 is rotatably provided on the shaft 86 of the upper substrate 1, and is a small diameter gear 841 of the second relay gear 84).
the first, second . The second toothless portion 85a, B6b, B2O267\-7 is formed on the outer periphery of the first cam 87°, which is formed in a groove shape. It has integrally a third cam 88,89.

A third relay gear 9o is rotatably provided on the shaft 91 of the upper substrate 1, a large diameter gear 90a is meshed with the large diameter gear 84a of the second relay gear 84, and a small diameter gear 901) is a main gear. 92 is engaged. This main gear 92
As shown in FIG. 26, is rotatably provided on the shaft portion 94a of a friction gear 94 held by a pulley 93, and configured to be pressed against the friction pulley 93 via a felt 96 by a compression spring 96. has been done. The friction pulley 93 and the friction gear 94 are rotatably provided on the shaft 97 of the upper substrate 1.

98 is a play lever, and the axis of the upper board 1 is 99°100.
an arcuate long hole 98a concentric with the shaft 97;

98t) is slidably engaged, and this play lever 98
is configured to rotate around the shaft 97.

A play gear 101 is rotatably provided on the shaft 102 of the plain 261\-shiba 98 and meshes with the friction gear 94.

103 is a first normal rotation relay gear, which is connected to the shaft 10 of the upper substrate 1;
4, and is configured to be able to mesh with the play gear 101. Reference numeral 106 denotes a second normal rotation relay gear, which is rotatably mounted on the shaft 106 of the upper substrate 1, and includes a first reel integrally molded with the first normal rotation relay gear 103 and the upper substrate 1 from a resin material. It is rotatably supported by a bearing 107 and is configured to mesh with a first glue gear 109 holding a first reel stand 10B.

The first reel stand 108 and the first reel gear 109
is biased with a rotational load by a compression spring 110, and is configured to apply pack tension when the magnetic tape 3 travels in the direction of arrow B.

Reference numeral 111 denotes a reversing relay gear, which is rotatably provided on the shaft (not shown) of the upper substrate 1, and includes a second reel bearing 112 integrally molded on the upper substrate 1 in the same manner as the first reel bearing 107. It is rotatably supported on a shaft by 27 mm and -7, and is configured to mesh with a second reel gear 114 that holds the second reel stand 113 upright, and to be able to mesh with the play gear 101. The second reel stand 113 and the second reel gear 114 are biased with a rotational load by a compression spring 116, and the magnetic tape 3
The structure is such that pack tension is applied when the wheel travels in the direction indicated by the arrow.

116ij is a fast-forwarding lever, and a bearing 117 is fixed as shown in FIG. This bearing 117 is configured to rotatably support a first rapid-forward gear 118 in a state where the first rapid-forward gear 118 is press-fitted into a second rapid-forward gear 119 and fixed by welding or the like. Said 1st and 2nd rapid feed gears 118, 1
A rotational load is applied to 19 by a compression spring 120, and the first fast forward gear 118 is connected to the main gear 92, and the second fast forward gear 119 is connected to the second normal rotation relay gear 1.
06 and the reversing relay gear 111.

As shown in FIGS. 9 and 16, the fast-forwarding lever 116 has the first fast-forwarding gear 118 connected to the main gear
In the state shown in FIGS. 9 and 16, the shaft portion 123a at one end of the fast-forward control lever 123 is rotatably provided on the shaft 121 of the lower substrate 7 and the shaft 122 of the upper substrate 1 in the state shown in FIGS. 9 and 16. An arcuate long hole 116 concentric with the shaft 97 &
116b is slidably engaged, and this fast-forwarding lever 11
6 is configured to rotate around the shaft 97.

The shaft portion 123b at the other end of the fast-forwarding control lever 123 is connected to the second shaft portion of the cam gear 86 as shown in FIGS. 9 and 16.
cam 88, and the first rapid-forward gear 118 and main gear 92 mesh with each other with the first toothless portion 85a positioned on the small diameter gear B4b of the second relay gear 84. The fast forward lever 116 is configured to be controlled. In addition, the above-mentioned fast forward lever 116
is the torsion spring 12 pivotally supported by the shaft 124 of the lower substrate γ.
The protrusion 123C is pressed by the arm 126a at one end of the arm 126a, and is biased counterclockwise in the direction 29l\-7 in FIG.

Reference numeral 126 denotes a blocking lever, which is rotatably provided on the shaft 127 of the lower substrate 7, and is attached to the arm portion 1 at the other end of the torsion spring 126.
The protrusion 126a is pressed by the protrusion 26b and biased clockwise in FIGS. 9 and 16, and its rotation due to the bias is prevented by the shaft 128 of the lower substrate 7. Further, one end 126b of the blocking lever 126 is controlled by the third cam 89 of the cam gear 86, and is controlled by the third cam 89 of the cam gear 86.
The other end 126 is rotated counterclockwise against the torsion spring 126 from the state shown in FIG. 6 to the state shown in FIGS. 11 and 16.
C is configured to abut and lock on the locking portion 116C of the fast forward lever 116.

129 is the first solenoid, and the screw 13 is attached to the upper board 1.
0, and has a permanent magnet (not shown) and a coil (not shown), and when the coil (not shown) is not energized, the permanent magnet (not shown) causes the attraction piece 131 to move to the attraction part. 129a, and when energized, the permanent magnet (not shown) is configured to release the attraction piece 131 from the permanent magnet (not shown). The configuration of this first solenoid 129 is well known and will not be described in detail.

Reference numeral 132 designates a first solenoid arm made of a resin material, which is rotatably provided on the shaft 133 of the upper substrate 1, and biased counterclockwise by a spring 134 in FIGS. 9 and 16. The suction piece 131 is rotatably supported on the shaft portion 132b of one end 132a, and the shaft portion 132d of the other end 132C is connected to the first shaft portion 132b formed on the cam gear 86. Second.
The third return cam 85 (1,858, 85f and is configured to abut and lock on the first, second and third locking portions 85g, 85h, 85i. Also, the first solenoid The other end 132C of the arm 132 has a thinning 132e formed therein in order to have an elastic effect.
It has a curved portion 132f forming a curve 32e.

The first return cam 85d of the cam gear 86 is attached to the suction piece 131 as shown in FIG.
9, the first toothless portion 862L is located at the small diameter gear 84b of the second relay gear 84, and the other end of the first solenoid arm 132 From the state in which the shaft portion 132d of the shaft portion 132C locks the first locking portion 85g, the suction of the suction piece 131 is released as shown in FIG. When the shaft portion 132d is rotated in the direction shown in FIG.
d, and the cam gear 86 is connected to the second relay gear 84.
The cam gear 86 is configured to be rotated clockwise from the state shown in FIG. 9 to the state shown in FIG. 10 until it engages with the small diameter portion of the cam gear 86. These configurations are described in Section 2 above. Third return cam 8
The same applies to 66.86f. In addition, the second return cam 5
ese is when the cam gear 86 is rotated clockwise by the small diameter portion 84b of the second relay gear 84 from the state shown in FIG.
2d, the first solenoid arm 132 is rotated clockwise against the spring 134, and the suction piece 131 is rotated clockwise against the spring 134.
is again attracted to the suction portion 129a of the first solenoid 129, and further controls the shaft portion 132d of the first solenoid arm 132, so that the first solenoid arm 13
The other end 132C of the solenoid arm 132 is configured to be bent as shown in FIG.
The second return cam 868 is controlled by the restoring force that returns the deflection state of C to the original shape. These configurations are as described in 1. above. Third return cam 86d, 85
The same applies to f.

As shown in FIG.
8, the second rapid traverse gear 11
9 is configured to be prevented from moving by the shaft 121 so as to be separated from the second normal rotation relay gear 105.

136 is a switching lever, which is rotatably provided on the shaft 133 together with the first solenoid arm 132 as shown in FIG. 16, and the cam shaft 136a at one end is connected to the first cam 8733 formed in a groove shape The lever shaft 136b at the other end is engaged with a control rod 137 slidably provided on the shaft 136 of the lower substrate 7.

138 and 139 are the first. A second pinch roller control shaft is fixed to the control rod 137 and is fixed to the first pinch roller control shaft. Control part 2o formed on the second pinch roller arm 20.21
b, 21b, and the first and second pinch rollers 6.6 are brought into contact with the first and second pinch rollers 6.6. The tape cassette 2 shown in FIG. 7 is moved to a position where the magnetic tape 3 can run, and the tape cassette 2 shown in FIG. When the holder body 11 is rotated to a position where it can be attached to and detached from the second holder 14.15, the eleventh second pinch roller arm 20.21 does not come into contact with the inner wall portion 11b of the holder body 11. As in 1. above. The second pinch roller 6.6 is connected to the first pinch roller 6.6. The above-mentioned first capstan 36, 37 should not be pressed against the second capstan 36, 37. a control unit 20b for the second pinch roller arms 20, 21;
21 +) are formed with curved portions 138a and 139a for controlling the 34 to -7.

A pad shifter control shaft 140 fixed to the control rod 137 contacts the control portion 24g of the pad shifter 24, and controls the pad shifter 24 so that the tape pad 26 is pressed against and separated from the magnetic tape contact surface 4a of the magnetic head 4. I'm letting you do it.

Reference numeral 141 denotes a relay lever formed of an elastic metal plate, which is rotatably provided on the shaft 142 of the lower substrate 7, one end 141a is engaged with the shaft 143 of the control rod 137, and the other end 141b is connected to the shaft 143 of the control rod 137. Bent portion 980 of the play lever 98
is engaged with.

The other end 141b of the relay lever 141 and the bent portion 980 are engaged with each other by narrowing the bent portion 98C by the first and second arm portions 141Q and 141d formed on the other end 141b. has been done.

Reference numeral 144 denotes an erasing head control rod, which is connected to the shaft 1 of the lower substrate 7.
46 and the above-mentioned shaft 136 in a slidable manner, and the above-mentioned first
．． Control units 29Q, 30C of second erasing head 29.30
The first erase head 29 and the second erase head 29 and 30 are controlled to contact and separate from the magnetic tape 3. It has second erasing head control shafts 146 and 147.

The erase head control rod 144 is connected to the fourth column 63.
The shaft portion 144a of the erasing head control rod 144 is
is energized to return and maintain the state of FIG. 20 PERSON and FIG. 20 B. The first return torsion spring 148. Second
arm portion 148a.

148b is guided by the T-shaped bent portion 7b of the lower substrate 7. Still, the erasing head control rod 144 overlaps the control rod 137, and is juxtaposed with the control rod 137 so as not to overlap with the insertion section 2d having an opening (not shown) of the tape cassette 2 in a plane. and the above-mentioned No. 1. Second pinch roller 6.6
．． 11th second pinch roller arm 20, 21. Pad shifter 24. Magnetic head 4. 1st. Second erase head 2
9, 30, the holder main body 11, etc. in a plan view.

149 is a connecting lever that connects the erasing head control rod 14;
4, and is configured to pass through the control rod 137 and the lower substrate 7, and is rotatably provided on the shaft 144b, and has an inclined shape formed on the control rod 137.
．． It has a connecting shaft 160 that can be engaged with the second engaging parts 1371L and 137b and can be engaged with the T-shaped holding control groove 7c formed in the lower substrate 7.

161 is a second solenoid arm, which is attached to the first support column 4.
The shaft portion 161a at one end rotatably supports the suction piece 163, and the shaft portion 161b at the other end is provided in a long hole in the connecting lever 149. Reference numeral 164 engaged with 149a is a second solenoid, and a screw 16 is attached to the upper board 1.
6 and is configured to attract the above-mentioned attraction piece 163 when one voltage is applied.

The second solenoid arm 161 is a torsion spring 166
In Figure 20, the person is biased counterclockwise.

37 Heh.

Reference numeral 167 denotes a pressing spring, which is integrally molded with the lower substrate 7 in an inverted V shape from an elastic resin material, and has one end 16
7a is formed integrally with the second support 49, and the other end 16
7b is formed to be displaceable. The cassette pressing spring 167 is molded using a fixed mold 168 as shown in FIG.
This is done by a movable mold 169.

The cassette pressing spring 167 is configured so that when the tape cassette 2 is installed in a position where the magnetic tape 30 can travel as shown in FIG. 4, it is inserted into the positioning hole 2e of the tape cassette 2, and the other end 167b is displaced. has been done.

The convex portions 9b, 10b of the holder support base 9.10 are formed so as to come into contact with the front surfaces 2f, 2g at both ends of the tape cassette 2.

The operation of the tape recorder configured as described above will be explained below.

First, the mounting operation of the tape cassette will be explained.

The holder main body 11 and the first. The second cassette holder 14, 16 is rotated counterclockwise against the spring 36 as shown in FIGS. Second holder 14.15
Store it in. At this time, the magnetic head 4 supported by the holder main body 11. 1st and 2nd pinch rollers 6.
6. and the tip 24+L of the bad shifter 24 are inserted into the opening (not shown) of this tape cassette 2, and the first. A second erase head 29.30 opposes. In this state, the holder main body 11 and the first. second holder 1
4.15 from the state shown in Fig. 6 and Fig. 8 to Fig. 4.

When the tape cassette 2 is rotated clockwise to the state shown in FIG. 7, the tape cassette 2 is installed in the tape running position.

The holder main body 11 and the first. Second holder 14.
15, the first and second pinch roller arms 20, 21 are rotated by the controllers 20t),
b is the above 1. Second pinch roller control shaft 138, 13
9 curved portion 1381L.

139a. 2nd pinpa) 1
39 ＼-
2 as well as the above 1. The second pinch roller 6.6 is controlled so as not to come into pressure contact with the first and second capstans 36,37.

When the tape cassette 2 is installed as shown in FIGS. 4 and 7, the cassette pressing spring 167 is inserted into the positioning hole 2e of the tape cassette 2, and the other end 167b of the cassette pressing spring 167 is displaced. This tape cassette 2 is pressed in the direction of arrow C by the restoring force 1, and the movement due to this pressure is caused by the above-mentioned 1. second holder support base 9,
10 convex portions 9b, 10b are connected to the front surface portions 2f, 2g [
The guide shaft 167 provided on the lower substrate 7 is inserted into the other positioning hole 2h, and the tape cassette 2 is positioned in the directions of arrows A and B, which are the running directions of the magnetic tape. It is positioned in the attached state.

Further, when the tape cassette 2 is placed in the attached state, the first tape cassette 2 is placed in the attached state. The second pinch roller control M138°139 controls the first pinch roller. The control units 20t) and 21t) of the second pinch roller arms 20 and 21 are controlled to control the first pinch roller arms 20 and 21. The second pinch roller 6.6 is separated from the eleventh second capstan 36.37, and the pad shifter 24 is moved against the first pinch roller spring 27 by controlling the control section 24g by the pad shifter control shaft 140. 20A [as shown in the tooth-shaped protrusion 24b]
, 240 presses the tape pad 26 against the leaf spring 26 to separate the tape pad 26 from the magnetic tape contacting surface, 4a, of the magnetic helad 4, and
．． The second erasing head 29°3Q is connected to the first erase head 29°3Q. The erase head is biased counterclockwise and clockwise by the second erase head springs 32 and 34, respectively, and enters a stopped state in which the rear parts 29tl and 30b are brought into contact with the inner wall of the holder main body 11.

Next, normal rotation regeneration operation from a stopped state will be explained.

When the first solenoid 129 is energized from the stopped state shown in FIGS. 9, 16, 20A, and 20B, the adsorption piece 131 is released from adsorption to the adsorption portion 129a,
The first solenoid arm 41/, -7 132 is rotated counterclockwise by the spring 134,
It will look like the figure. When this first solenoid arm 132 is rotated as shown in FIG. 10, the shaft portion 13 at the other end 132C
At the same time as the locking of the first locking portion 86g of the cam gear 86 by the cam gear 86 is released, the shaft portion 132d controls the first return portion 86d so that the first missing tooth portion 85a of the cam gear 86 is released. The cam gear 86 is rotated clockwise so that the small diameter gear 84b of the second relay gear 84 changes from the non-meshing state shown in FIG. 9 to the meshed state shown in FIG. 1o.

When the cam gear 86 is rotated to the state shown in FIG. 10, the fast-forward control lever 123 is rotated counterclockwise as shown in FIG. 10 by the control of the second cam 88 and the torsion spring 126. Therefore, the fast forward lever 116 is in the 10th position.
As shown in the figure, the first fast-forwarding gear 118 is rotated counterclockwise about the shaft 121, and the first fast-forward gear 118 is brought from the engaged state shown in FIG. 9 to the separated state shown in FIG. 10 with respect to the main gear 92.

Almost simultaneously with these operations, the motor device 6842 is operated to rotate the magnet rotor 63 counterclockwise as shown in FIG. , belt 78.
Main pulley 76, drive gear 76a, first relay gear 8
1 in a counterclockwise direction. Therefore, the cam gear 86 is rotated clockwise until the second toothless portion 851) is located at the small diameter gear 84b of the second relay gear 84.

When the cam gear 84 is rotated in this manner, the blocking lever 126 has one end 126b controlled by the third cam 89 and is rotated counterclockwise against the torsion spring 126, as shown in FIGS. The state shown in Fig. 12 is reached and the other end 126
According to C, the arc-shaped elongated hole 116a of the fast-forwarding lever 116
, 116b and the shaft 121. Rapid forward control lever 123
The counterclockwise rotational movement of the fast-forward lever 116 by the shaft portion 123a at one end is prevented, and the second fast-forward gear 119 is separated from the reverse relay gear 111.

43 to/゛Also, even if the fast-forward lever 116Fi is rotated clockwise with the first fast-forward gear 118 and main gear 92 separated from each other as shown in FIG. 10, the second fast-forward gear 1
19 is prevented from rotating by the arc-shaped elongated hole 116a and the shaft 121 so as to be separated from the second normal rotation relay gear 106.

Further, when the cam gear 86 is rotated as described above, the shaft portion 132d of the other end 132C of the first solenoid arm 132 is controlled by the second return portion 8515, and the shaft portion 132d of the first solenoid arm 132 is rotated clockwise against the spring 134. The suction piece 1 is rotated in the direction of
31 is again attracted to the attraction portion 129a of the first solenoid 129.

Further, the shaft portion 132 of the first solenoid arm 132
When d is controlled by the second return unit 866, the other end 132C of the first solenoid arm 132 is brought into a deflected state as shown in FIG. Next, the restoring force to return to the original shape from this deflected state and the second returning portion 8115+
5 is controlled by the shaft portion 132d to connect the cam gear 86 and the second
The cam gear 86 is rotated clockwise just before or almost simultaneously the meshing with the small diameter gear 84b of the relay gear 84 becomes non-meshing due to the second missing tooth portion 85t), and then the cam gear 86 is rotated clockwise.
The locking portion 86h is locked by the shaft portion 132d, and the second toothless portion 85b is positioned and held by the small diameter gear 84b, resulting in the state shown in FIGS. 12 and 16.

Further, when the cam gear 86 is rotated from the state shown in FIGS. 9 and 16 to the state shown in FIGS. 12 and 16, the switching lever 136 is moved counterclockwise by the first cam 87 as shown in FIG. direction, thus said control rod 1
37 is moved in the direction of the arrow from the state of FIG. 16, FIG. 20, and FIG.
The state shown in Figure B is obtained.

When the control rod 137 is moved in this way, the first pinch roller arm 2o is moved clockwise by the control section 2ob being controlled by the pinch roller control shaft 138 and biased by the first pinch roller spring 27. is rotated. Therefore, the first pinch roller 6 is brought into pressure contact with the first capstan 36, which is rotated counterclockwise by the magnet rotor 63 of the motor device 68, and causes the magnetic tape 3 to run in the direction of the arrow. . At the same time, the relay lever 141 is rotated counterclockwise, the play lever 98 is rotated clockwise, and the play gear 101 is meshed with the first forward rotation relay gear 103. This play gear 101
is meshed with the first normal rotation relay gear 103, the first
The reel gear 109 and the first reel stand 108 are rotated counterclockwise, and the first reel gear 109 is rotated counterclockwise, and the first
The magnetic tape 3 fed out by the pinch roller 6 and the first capstan 36 is wound onto the first reel hub 2a. Further, the pad shifter 24 has the control section 24g controlled by the pad shifter control shaft 140, and the tooth-like protrusions 241) and 240 of the magnetic head 4 in the counterclockwise direction by the biasing force of the first pinch roller spring 27. 1st. It is rotated until it comes into contact with the second cut parts 4b and 4c. Therefore, to the above tape pad 2646~
The plate spring 26 connects the magnetic tape 3 to the magnetic head 4.
The magnetic tape contact surface 4a is brought into pressure contact with the magnetic tape contact surface 4a to enter a normal rotation reproduction operation state.

At this time, the second pinch roller 6 is separated from the second capstan 37 by controlling the control section 21b of the second pinch roller arm 21 by the second pinch roller control shaft 139.

If the second solenoid 164 is not energized and placed in the non-adsorption state when the stopped state is changed to the normal rotation regeneration state, even if the control rod 137 is moved in the direction of the arrow as shown above, the return twist will not occur. Since the erasing head control rod 144 is held in the state shown in FIG. 20 and FIG. When the mating portion 137a abuts, this first engaging portion 137
Due to the inclination of a, the connecting lever 149 and the second solenoid arm 161 are respectively rotated clockwise against the torsion spring 166.

Therefore, the erase head control rod 144 is moved 47.
Heh.

Therefore, the above 1. The second erasing head 29.degree. 30 is kept separated from the magnetic tape 3.

Next, the reversal reproducing operation from the normal reproducing state will be explained.

When the first solenoid 129 is energized from the normal rotation regeneration operation state of FIG. 12, FIG. 16, FIG. 21, and FIG. . Hereinafter, similarly to the normal rotation regeneration operation, the cam gear 86 changes from a state in which the second toothless portion 86b is located at the small diameter gear 84b of the second relay gear 84 to a state in which the third toothless portion 850 is located at the small diameter gear. 841). During this time, the first solenoid arm 132
, coaxial portion 132d, second return portion 86 of cam gear 86
e, the third return portion 86f, the third locking portion 85i, etc. perform the same operations as in the normal rotation regeneration operation described above, and will not be described in detail to avoid duplication.

When the cam gear 86 is rotated in this manner, the switching lever 136 and the control rod 137 change from the states shown in FIGS. 16, 21 and 21B to the states shown in FIGS. Clockwise direction and arrow B in state B respectively
direction through the stop position of FIG. 16, FIG. 20, and FIG. 20B.

When the control rod 137 is moved in this way, the second pinch roller arm 21 is controlled by the pinch roller control shaft 139, and the second pinch roller arm 21 is controlled by the second pinch roller control shaft 139.
The pinch roller spring 28 rotates counterclockwise. Therefore, the second pinch roller 6 is brought into pressure contact with the second capstan 37, which is rotated clockwise by the magnet rotor 63 of the motor unit 68, and causes the magnetic tape 3 to run in the direction of arrow B. At the same time, the relay lever 141 is rotated clockwise, and therefore the play lever 98 is rotated counterclockwise, so that the play gear 101
is meshed with the reversing relay gear 111. When the play gear 101 is engaged with the reversing relay gear 111, the second reel gear 49 to 114 and the second reel stand 113 are rotated clockwise and are rotated at a substantially constant rate due to the slip between the felt 96 and the friction pulley 93. The magnetic tape 3 fed out by the second pinch roller 6 and the second capstan 37 by the torque is wound around the second reel hub 2b. The pad shifter 24 is still connected to the pad shifter control shaft 140.
The control section 24g is controlled by the above, and the tape pad 26 presses the magnetic tape 3 against the magnetic tape contacting surface 4a of the magnetic head 4 during the forward playback operation to enter a reverse playback operation state.

At this time, the first pinch roller 6 is separated from the first capstan 36 by controlling the control section 20b of the first pinch roller arm 20 by the first pinch roller control shaft 138.

Furthermore, when changing from the normal rotation regeneration state to the reverse regeneration state, if the second solenoid 164 is not energized and placed in the non-adsorption state, even if the control rod 137 is moved in the direction of arrow B as described above, the return A torsion spring 148 holds the erase head control rod 6o.

Since the connecting lever 149 and the second solenoid arm 161 are held in the states shown in FIG. 21 and FIG. After the connecting shaft 15Q is released from contact with the connecting portion 137a and is rotated counterclockwise by the screw spring 166 to reach the states shown in Figure 20 and Figure 2o, the control rod 137 is rotated. The second one has an inclined shape.
When the second engaging portion 137b comes into contact with the connecting shaft 150, the inclination of the second engaging portion 137b causes the connecting lever 1 to
49 and the second solenoid arm 161 are each rotated clockwise against the torsion spring 166. Therefore, since the erase head control rod 144 is not moved, the first erase head control rod 144 is not moved. The second erasing heads 29 and 30 are maintained apart from the magnetic tape 3.

In addition, the fast forward control lever 123 and the blocking lever 126
The second cam 88 and the third cam 88 and
Since these operations overlap, they will not be described in detail.

61ノ\-/ Next, the stopping operation from the reverse playback state will be explained.

When the first solenoid 129 is energized from the reverse regeneration state shown in FIGS. 17, 23A, and 23B, the adsorption piece 131 is released from adsorption to the adsorption portion 129a. Hereinafter, similarly to the normal rotation regeneration operation and the reverse regeneration operation, the cam gear 86 changes from the state where the third toothless portion 850 is located at the small diameter portion 841 of the second relay gear 84 to the first toothless portion. FIG. 14 shows a portion 86a located at this small diameter gear 84b.

It is rotated to the state shown in FIG. During this period, the first solenoid arm 132. Coaxial portion 132d.

Third return portion 86f of cam gear 86, first return portion 86
d, the first locking portion 85g, etc. perform the same operation as in the normal rotation regeneration operation.

When the cam gear 86 is rotated in this manner, the shaft portion 123b at the other end of the fast-forward control lever 123 is controlled by the second cam 88, causing the fast-forward lever 123 to resist against the torsion spring 12. and then rotated clockwise. Therefore, the fast-forwarding lever 116 is rotated clockwise about the shaft 121, and the first fast-forwarding gear 118 is rotated clockwise about the shaft 121.
is meshed with the main gear 92. As shown in FIG. 13, this engagement already starts when the first toothless portion 85a of the cam gear 86 is positioned on the small diameter gear 84t of the second relay gear 84, and therefore the fast forward lever 116 is Since the rotational load is applied to the first and second rapid-forward gears 118 and 119 by the compression spring 120, they are rotated counterclockwise. However, the blocking lever 1
Rotation of the fast-forward lever 116 is prevented by the other end 126C of the fast-forward gear 26, and the second fast-forward gear 119 and the reverse relay gear 111 are separated from each other. As shown in FIG. 14, when the first toothless portion 86a is located at the small diameter gear 84k), the four rotations of the fast-forward control lever 123 by the second cam 88 are completed, and the fast-forward lever 116 is rotated by the second cam 88. axis 1
The rotational movement in the clockwise direction about 21 is also completed, and accordingly, the meshing operation of the first fast-forward recharger 118 with the main gear 92 is also completed. At this time, the locking portion 116C of the fast forwarding lever 116 is connected to the other end 126C6 of the blocking lever 126.
This blocking lever 126 locks the third cam 89.
The control of the one end 126b by the torsion spring 126 is released, and the clockwise rotation by the torsion spring 126 is stopped. Therefore, the first
In the state shown in Fig. 4, the magnet rotor 6 of the motor device 68 is
3 rotates counterclockwise, the second fast-forward gear 11
9 is kept separated from the reversing relay gear 111. That is, after reaching the stopped state shown in FIG. 14, the motor device 68 is stopped, and the magnet rotor 63. Relay pulley 72. 1st. Second flywheel 38
．． There is no possibility that the magnetic tape 3 will run on its own due to rotation due to the inertia of the magnetic tape 39 or the like.

Incidentally, as shown in FIG. 14, the other end 12 of the blocking lever 126
6C is released from the locking portion 116C of the fast-forwarding lever 116, by rotating the magnet rotor 63 clockwise and rotating the main gear 92 clockwise, the fast-forwarding lever 116 is rotated clockwise. The blocking lever 126 is rotated clockwise by the torsion spring 126 to release the locking state.
The state will be as shown in the page diagram.

As described above, the cam gear 86 is replaced with the small diameter gear 54bK.
, 4g3 rotates from the state where the toothless portion 860 is positioned to the state where the first toothless portion 852L is positioned, the switching lever 136 and the control rod 137 move as shown in FIG.
The robot is moved counterclockwise and in the direction of the arrow from the state shown in FIG. 3 and FIG. 23B to the state shown in FIG. 16, FIG. 20, and FIG. 20B, respectively.

When the control port 137 is moved in this way, the control portion 21b of the second pinch roller arm 21 is controlled by the pinch roller control shaft 139, and the second pinch roller arm 21 is moved against the second pinch roller spring 28. The second pinch roller 7 is separated from the second capstan 37 by being rotated clockwise. At the same time, the relay lever 141 is rotated counterclockwise, the play lever 98 is rotated clockwise, and the play gear 101 is rotated to the reverse relay gear 1.
11, and the rotation of the second reel gear 114 and the second reel stand 113 is stopped. Further, the pad shifter 24 is controlled by the controller 24g by the pad shifter control shaft 140, and the pad shifter 24 is controlled by the pad shifter control shaft 140.
is rotated clockwise against the pinch roller spring 27. Therefore, the tooth-shaped protrusions 24b and 24C push the tape pad 26 against the leaf spring 26 and push the magnetic head 4.
is separated from the magnetic tape contact surface 4a and comes to a halt.

Further, the connection lever 149 and the second solenoid arm 161 are released from contact with the second retaining portion 137b of the control rod 137 of the connection shaft 160, and are rotated counterclockwise by the torsion spring 166. The person in Figure 20 is in the state shown in Figure 20B.

Next, the stopping operation from the normal rotation regeneration state will be explained.

When the first solenoid 129 is energized from the normal rotation regeneration state shown in FIG. 16, FIG. 21, and FIG. 21B, the adsorption piece 131 is released from adsorption to the adsorption portion 129a.

Thereafter, the same operation as in the reverse regeneration operation from the normal rotation regeneration state is performed, and the third missing tooth portion 860 of the cam gear 86 is located at the small diameter gear 84b of the second relay gear 84, and the first The solenoid arm 132 of the third return section 5
The shaft portion 132d is controlled by the esf, and the spring 1
34 in the clockwise direction, and the suction piece 131 is again attracted to the suction portion 129Δ, resulting in an inverted regeneration operation state. If the solenoid 129 is still energized at this time, the suction of the suction piece 131 is released again, and the operation is then performed in the same manner as the stop operation from the reversal regeneration state, resulting in the stop state.

This stopping operation is carried out from the forward reproducing state through the reverse reproducing operation, but this reversing reproducing operation is instantaneous and does not cause any problems in terms of movement or operational feel.

Next, the reversal playback operation from the stopped state will be explained.

When the first solenoid 129Vc is energized from the stopped state of FIG. 9, FIG. 16, FIG. 2o, and FIG. Thereafter, the same operation as in the normal rotation regeneration operation is performed to enter the normal rotation regeneration state 5. At this time, the first solenoid 12
9, the suction of the suction piece 131 described on page 67 is released again, and the reproducing state is changed to the reversing reproducing state by operating in the same manner as in the reversing reproducing operation from the normal reproducing state.

This reversal regeneration operation is performed from a stopped state via a forward regeneration operation, but the forward regeneration operation is instantaneous and does not cause any problems in terms of movement or operational feel.

Next, the normal rotation reproduction operation from the reverse reproduction state will be explained.

When the first solenoid 129 is energized from the reverse regeneration state shown in FIG. 17, FIG. 23, and FIG. 23B, the adsorption of the adsorption piece 131 to the adsorption portion 129a is released.

Thereafter, operations are performed in the same manner as in the stop operation from the reverse playback state, and the stop state is reached. At this time, the first solenoid 12
9, the suction of the suction piece 131 is released again and the regeneration operation is performed in the same manner as in the normal rotation regeneration operation from the stopped state to enter the reverse regeneration state.

Next, the forward rotation recording operation from the stopped state will be explained.

9, 16, 20, and 20 B68 From the stopped state of the page, the first solenoid 1290 is energized and controlled in the same way as during the normal rotation reproduction operation, and the magnetic tape 3 is
Run in the direction of the arrow. This first solenoid 12
Almost simultaneously with the start of energization to 9, the second solenoid 16
When the solenoid 4 is energized, the suction piece 163 is attracted to the second solenoid 164 . Therefore, the control rod 13
7 moves in the direction of the arrow, the first retaining portion 137
a is brought into contact with the connecting shaft 160, and this first retaining portion 1
Since the clockwise rotation of the connecting lever 149 and the second solenoid arm 161 due to the inclination of the connecting lever 37a is prevented, the connecting lever 149, together with the erasing head control rod 144, is connected to the return torsion spring 148 by the control rod 137. The object is moved in the direction indicated by the arrow, resulting in the state shown in FIG. 24 and B in FIG. When the erasing head control rod 144 is moved in this manner, the first erasing head 29 is brought into contact with the control portion 29c by the first erasing head control shaft 146, and the first erasing head spring 3
The contact surface 29 is rotated counterclockwise against the magnetic tape 2 as shown in FIG.
& comes into contact, performs an erasing operation, and enters a forward recording state.

At this time, the connecting shaft 1150 comes into contact with one blocking portion 7e of the single-shaped groove 7C of the lower substrate 7, and the connecting lever 14
9 is prevented from rotating clockwise.

Therefore, even if the second solenoid 164 is de-energized, this erasing operation is maintained.

Next, a reversal recording operation from a stopped state will be explained.

When the first solenoid 1290 is energized in the same way as during the reverse regeneration operation from the stopped state of FIG. 9, FIG. 16, FIG. 20, and FIG. At this point, the magnetic tape 3 is moved in the direction of arrow B through the stop position. When the control rod 137 and the like are in the normal rotation position and the stop position, when the second solenoid 164 is energized, the attraction piece 163 is attracted to the second solenoid 164. Therefore, when the control rod 137 moves in the direction of arrow B, the second engaging portion 137b comes into contact with the connecting shaft 160, and the inclination of the second engaging portion 137b causes the connecting lever 149 and the second Since the clockwise rotation of the solenoid arm 161 is prevented, this connection lever 14
9 is moved together with the erasing head control rod 144 by the control rod 137 in the direction of arrow B against the return torsion spring 148, resulting in the states shown in FIG. 25 and FIG. 26B. When the erasing head control rod 144 is moved in this way, the second erasing head 30 is brought into contact with the control portion 30C by the second erasing head control shaft 147, and the second erasing head spring 34 is brought into contact with the controller 30C. The contact surface 30a contacts the magnetic tape 3 as shown in FIG. 26, performing an erasing operation and entering a reverse recording state.

At this time, the connecting shaft 160 comes into contact with the other blocking part 7f of the single-shaped groove 7C of the lower substrate 7, and the connecting lever 149
clockwise rotation is prevented.

Therefore, even if the power supply to the second solenoid 164 is stopped, this erasing operation is maintained.

Also, at this time, an instantaneous forward rotation operation is performed, but the erasing head control rod 144 will not be moved unless the solenoid 164 of the 61st section 72 is energized. Therefore, since the first erasing head 29 is separated from the magnetic tape 3, problems such as erroneous erasure do not occur.

The second erasing head 3o in the forward recording state and the first erasing head 29 in the reverse recording state are shown in FIG.
As shown in Figure 6, the second erasing head control shaft 147
and the first erasing head control shaft 146 is connected to the control section 3oC.
and 29C, so the above magnetic tape 3
It becomes a state separated from.

Next, the reverse recording operation from the forward recording state will be explained.

The first solenoid 129 is energized by controlling the energization of the first solenoid 129 from the normal recording state shown in FIGS. Run in the direction of arrow B. At this time, the erasing head control rod 144 and the connecting lever 149 are moved in the direction of arrow B by the return torsion spring 14862.
This is the stopping position. At almost the same time, when the second solenoid 164 is energized, the same operation as the reverse recording operation from the stopped state is performed and the reverse recording state is entered.

Next, the forward recording operation from the reverse recording state will be explained.

Similarly to the normal playback operation from the reverse recording state shown in FIGS. 17, 26 and 26B, the first solenoid 129 is energized and the magnetic tape 3 is moved by the arrow Run in the incoming direction. At this time, the erasing head control rod 144 and the connecting lever 149 are moved in the direction of the arrow by the return torsion spring 148 to the stop positions shown in FIG. 20 and FIG. 20B. At almost the same time, when the second solenoid 164 is energized, the same operation as the normal rotation recording operation from the stopped state is performed, and the normal rotation recording state is established.

Next, the stopping operation from the normal rotation recording state will be explained.

16 and 24 and the normal rotation record 63 of FIG. 24B. When the energization control of the first solenoid 129 is performed in the same manner as in the stop operation from the normal rotation playback state from the humming sound state, , the erasing head control rod 144 and the connecting lever 149 are moved to the stop position by the return torsion spring 148;
The first erase head 29 is separated from the magnetic tape 3 and comes to a halt. Although this time-scale rotation operation is performed, the erase head control rod 144 will not be moved unless the second solenoid 164 is energized. Therefore, since the second erasing head 30 is separated from the magnetic tape 3, problems such as erroneous erasure do not occur.

Next, the stopping operation from the reverse recording state will be explained.

When the energization of the first solenoid 129 is controlled in the same manner as the stopping operation from the reverse playback state from the reverse recording state shown in FIGS. 17, 26A, and 26B, the erase head control rod 144 and The connecting lever 149 is moved to the stop position by the return torsion spring 148, and the first erasing head 29 is separated from the magnetic tape 3 and comes to a stop state.

The first solenoid 129. Second solenoid 164
The timing for conducting the energization control is determined, for example, by using a shaft 143 integrated with the control rod 137, etc., using a first detection switch (not shown) that is OFF when stopped and ON only during forward rotation.
, a second detection switch (not shown) that is turned on only during the reverse operation in the stop state 1OFF, and a third detection switch (not shown) that detects the presence or absence of the first and second accidental erasure prevention claws (not shown) of the tape cassette 2. Control may be performed based on the operating state of a detection means such as a fourth detection switch (not shown). These are well known and will not be described in detail.

Next, the fast forward operation in the first direction will be explained.

When the magnet rotor 63 of the motor device 68 is rotated clockwise as shown in FIG. 18 from the stopped state of FIG. 16, the main gear 92 is rotated clockwise.

When the main gear 92 is rotated, the first fast-forward gear 118 and the second fast-forward gear 119 are rotated counterclockwise, and the fast-forward lever 11666 is rotated clockwise. Therefore, the second fast-forwarding gear 119 is meshed with the second normal rotation relay gear 106, and the first reel gear 119 and first reel stand 108 are rotated counterclockwise to transfer the magnetic tape 3 to the second normal rotation relay gear 106. The reel is wound onto the reel hub 2b of No. 1 and enters a fast forward operation state in the first direction.

Next, the fast forward operation in the second direction will be explained.

When the magnet rotor 63 of the motor device 68 is rotated counterclockwise as shown in FIG. 19 from the stopped state shown in FIG. 16 and the fast-forwarded state in the first direction shown in FIG. 18, the main gear 92 is rotated counterclockwise. be rotated.

When the main gear 92 is rotated, the first fast-forward gear 118 and the second fast-forward gear 119 are rotated clockwise, and the fast-forward lever 116 is rotated counterclockwise. Therefore, the second fast-forwarding gear 119 is meshed with the reversing relay gear 111, and the second reel gear 114 and second reel stand 113 are rotated clockwise to transfer the magnetic chips 3 to the second reel hub. 2b and enters a fast forward operation state in the direction of the 266th peno.

During the fast forward operation in the first and second directions, the tape pad 26 is separated from the magnetic head 4 by the pad shifter 24, but the magnetic tape 3 is in contact with the magnetic tape contact surface 4a of the magnetic head 4. The signal recorded on the magnetic tape 3 can be detected.

Therefore, when the song interval is detected during the fast-forward operation in the first and second directions and the first solenoid 129 is energized, the cam gear 86 becomes the state shown in FIG. 10, and the fast-forward control lever 123. The fast-forwarding lever 116 is controlled and rotated counterclockwise by the torsion spring 126 to separate the first fast-forwarding gear 118 from the main gear 92. These operations are actually performed instantaneously. Next, it is possible to carry out a forward or reverse playback operation and perform a cueing operation that automatically plays the song from the beginning.

The above-mentioned forward rotation and reverse playback operations, forward rotation and reverse recording operations, first and second fast forward operations, cueing operations, and stopping operations of these operations are performed by a plurality of electrical operation switches 67 and controls. The circuit includes the motor device 58, the first solenoid 129. This is done by controlling the second solenoid 164 and the like. These are well known and will not be described in detail.

It goes without saying that it is also possible to perform operations other than those described above, such as the normal rotation or reverse playback operation, the normal rotation or reverse recording operation, and the like.

As described above, according to this embodiment, since the control rod 137 is moved by the cam gear 86, the structure can be made inexpensive and small.

Furthermore, since the first fast-forward gear 118 is separated from the main gear 92 during playback or recording, the rotational load on the motor device 68 is reduced, and current consumption is also reduced.

Further, since the fast-forward control lever 123 is controlled to separate the fast-forward gear 118 from the main gear 92 by the cam gear 86, the configuration is simple and inexpensive.
Furthermore, the tape recorder main body can be made smaller.

In addition, the control rod 137 and the rapid feed control lever 123
is controlled by the cam gear 86, so the control for performing the playback operation after detecting the song interval and playing from the beginning of the song is controlled by the first control.
This can be done by simply controlling the energization of the solenoid 129, and the configuration is simple, inexpensive, and the tape recorder main body can be made smaller.

Furthermore, during the fast-forwarding operation and the song interval detection operation, the pad shifter 24 moves the tape pad 26 away from the magnetic head 4, so the running load is small, so the torque is also small, and the capacity of the motor device 68 is also small. It's done.

Furthermore, the erasing head control rod 144 is configured to overlap with the control rod 13γ, and is moved in the direction of the arrow in or the direction of the arrow B to perform forward/reverse recording operation and stop operation, so that the tape recorder main body is Can be made smaller.

Further, the recording operation can be controlled simply by moving the erasing head control rod 144 by the control rod 137 and controlling the energization of the second solenoid 164, resulting in a simple configuration. and the blocking portion 76 of the T-shaped groove portion 7c.
．． Since the erase operation state 69＼--7 is maintained at 7f, the second solenoid 1
There is no need to continuously energize the 64, so power can be saved.

Further, the rapid feed lever 116 is moved to the first rapid feed gear 1.
18 is in a position separated from the main gear 92, the second fast forward gear 119 is connected to the second normal rotation relay gear 10.
The arcuate elongated hole 116a is formed so as to be spaced apart from E5, and the fast-forward lever 116 is controlled by the blocking lever 126 so that the second fast-forward gear 119 moves away from the reversing relay gear 111. During the operation and recording operation, the second fast forward gear 119 meshes with the second forward relay gear 106 and the reverse relay gear 111, so that the performance is stabilized without uneven pack tension. Also, no abnormal noises are generated.

Furthermore, when the playback or recording operation is brought to a stop state, the other end 116c of the blocking lever 126 is locked to the locking portion 116c of the fast-forward lever 116. When the gear is in the stop state, the second rapid-forward gear 119 is not engaged with the reverse relay gear 111. Therefore, after the motor device 68 is in a stopped state and the operation of the motor device 68 is stopped, the magnet rotor 63. Relay pulley 72. 1st. The magnetic tape 3 does not run alone in the direction of arrow B due to the inertia of the second flywheels 38, 39, etc.

Further, since the blocking lever 126 is controlled by the cam gear 86, the structure is simple and inexpensive, and the tape recorder main body can be made smaller.

Effects of the Invention As described above, according to the present invention, the magnetic tape is
The first one is run in the direction of . a second traveling means;
．． A control member that moves to a first position in a stopped state, a second position in a first running state, and a third position in a second running state to control a second traveling means; The members are placed in the above-mentioned 1st and 2nd positions. cam means for driving to a third position;
The first cam means is formed integrally with this cam means. Second. The first position corresponds to the third position. Second. 71 with third missing tooth part
・\.

a cam gear meshing with the cam gear and interlocking with the tape running motor; and a trigger means for controlling the cam gear and bringing the drive gear into a non-meshing state in which the toothless portion is located and into a meshing state. As a result, the control member is in a stopped state, and the first. The second tape running state can be switched, the configuration is simple and inexpensive, and the device can be easily miniaturized.

In addition, since the cam gear and control member can be operated by the motor that runs the magnetic tape, it can be constructed at low cost and downsized.

Further, according to the present invention, there is provided a tape running means for running a magnetic tape, and a control member that moves to a first position in which the tape running means is in a stopped state and a second position in which the tape is in a running state in order to control the tape running means. , a first cam means for driving the control member, and a cam control means for controlling the cam means;
The first motor is linked to the motor. A fast-forward drive rotary body that rotates in a second direction, and rotation is transmitted from the fast-forward drive rotary body, and when the fast-forward drive rotary body rotates in the first direction, rotation is transmitted to the first or second reel stand, and the rotation is transmitted to the first or second reel stand. When the magnetic tape performs the first fast-forward motion and rotates in the second direction, the second
Alternatively, the rotation is transmitted to the first reel stand 17 and the fast-forward transmission rotation is applied with a rotational load and supported by a support member so as to move to perform the second fast-forward operation, and the fast-forward drive is controlled by controlling the support member. a fast-forward control member that sets rotation transmission from the rotating body to the fast-forward transmitting rotating body into a transmitting state and a non-transmitting state; and a fast-forward control member that controls the fast-forward controlling member so that the transmitting state is obtained only at a first position of the control member. By providing a second cam means with a shape of 100 mm and configuring the second cam means and the first cam means integrally, the rotational load of the fast-forward transmitting rotor is not applied to the motor during tape running such as playback. Therefore, current consumption is reduced. Also number 1. Since the second cam means is integrated, the structure is simple, inexpensive, and compact.

Further, a biasing means is provided for biasing and operating the fast-forwarding control member in a direction to bring the fast-forwarding control member into the non-transmission state, and when the control member is moved from the second position to the first position by the first cam means. The second cam hand 73 \.

The stage controls the fast-forward control member against the biasing means so that the control member is in a first position in a state of transmitting rotation from the fast-forward driving rotary body to the fast-forward transmitting rotary body; The second cam means and the fast-forward control member are associated with each other so that when the cam control means is activated from the second fast-forward state, the first or second fast-forward state is instantaneously released by the biasing means. 1st. By configuring the second fast-forward operation to be performed with the magnetic tape in contact with the magnetic head, the biasing means detects the song interval during the fast-forward operation, and when the next playback operation is performed, the fast-forward operation is performed. can be canceled instantly, so you can reliably play the song from the beginning.

Further, according to the present invention, the magnetic tape is placed in the first . The first one runs in the second direction. a second traveling means; A first position in which the second traveling means is controlled to be in a stopped state, and a second position in which the second traveling means is in a first traveling state.

a control member that moves to a third position for a second running state; and a control member that moves this control member to the first position. Second. a movement control means for moving the magnetic tip 74 to the first position; The first... Second
erase head, and this first erase head. an erasing head control member that controls the second erasing head to be in a separate position and a contact position with respect to the magnetic tape, and a connection that selectively causes the erasing head control member and the control member to be non-moving during playback and interlocked during recording; means is provided, and the erasing head control member is interlocked with the control member by the coupling means only during recording, so that the control member is in the first position and the erase head control member is in the first position. From the state in which the second erasing head is separated from the magnetic tape, in the state of the second position, only the first erasing head is in contact with the magnetic tape, and in the state of the third position, only the second erasing head is in contact with the magnetic tape. By configuring the erasing head to be in contact with each other, the erasing head control member is interlocked with the control member only during recording. It is possible to control the separation and contact of the second erasing head with respect to the magnetic tape, and the configuration is simple, inexpensive, and compact.

[Brief explanation of drawings]

76 To-7 Fig. 1 is a plan view showing the external appearance of the main parts of a tape recorder according to an embodiment of the present invention, Fig. 2 is a rear view showing the tape cassette as seen from the back, and Fig. Back view, No. 4
The figure is a side view showing the action of the cassette pressing spring with the tape cassette installed in the running position, Figure 6 is a side view showing the tape cassette in the detached position, and Figure 6 is the cassette pressing spring. A schematic cross-sectional view showing the molding state of 7th
The figure is a side view showing the action of the pinch roller control shaft with the tape cassette installed in the running position, FIG. 8 is a side view showing the tape cassette in the detached position, and FIG. Fig. 10 is a schematic plan view showing the state in which the cam gear is controlled by the first solenoid, and Fig. 10 is a schematic plan view showing the moment when the first solenoid operates from the stopped state, and Fig. 11 is the same diagram. Fig. 12 is a schematic plan view showing the state immediately before entering the reverse playback or recording state; Fig. 13 is a schematic plan view showing the same forward playback or recording state; Fig. 13 is on the way from the reverse playback or recording state to the stop state. Fig. 14 is a schematic plan view showing the state immediately after changing from the playback or recording state to the stopped state, and Fig. 16 mainly shows the state of rotating parts such as gears, and is in the stopped state. FIG. 16 is a schematic plan view showing the normal rotation playback or recording state,
FIG. 17 is a schematic plan view showing the reverse playback or recording state, FIG. 18 is a schematic plan view showing the fast forward state in the first direction, and FIG. 19 is a schematic plan view showing the fast forward state in the second direction. Figure 20: People mainly use pinch rollers. Fig. 20B is a partial plan view showing the operating state of the magnetic head, erasing head, etc., and shows the stopped state; Fig. 20B is a partial plan view showing the operating state of the control rod and erasing head; is a schematic plan view showing the normal rotation regeneration state, and the second
Fig. 1B is a partial plan view of Fig. 21, and Fig. 22 is a partial plan view showing the state of the tape pad in the playback or recording state.
Figure 23: A schematic plan view showing the person in an inverted regeneration state, Figure 23B
Figure 23 is a partial plan view of a person, Figure 24 is a schematic plan view showing a person in a forward recording state, Figure 24B is a partial plan view of a person in Figure 24, and Figure 26 is a schematic plan view showing a person in a reverse recording state. 77 ・＼-2 FIG. 26 is a partial cross-sectional view showing the reel stand drive gear train during normal rotation playback or recording, and FIG. 27 is a partial plan view of the FIG. 28 is a partial cross-sectional view showing the reel table drive gear train during fast forwarding in the direction of . FIG. 28 is a partial cross-sectional view showing the cam gear drive gear train. 1...Top board, 2...Tape cassette, 3...Magnetic tape, 4...Magnetic head, 6...First pinch Laura, 6...
Second pinch roller, 7...lower board, 9...
...First holder support stand, 10...Second holder support stand, 11...Holder body, 14.
...First holder, 16... Second holder, 20... First pinch roller arm, 2
1...Second pinch roller arm, 24...
...Pad shifter, 26...Tape pad,
29...First erase head, 30...Second erase head, 36...First capstan, 37...Second capstan , 68...
...Motor device, 72...Relay pulley, 76.
...Motor belt, 76...Main pulley, 762L...Drive gear, 78...
Belt, 81...First relay gear, 84...
...Second relay gear, 84b78 ・\-/ ...Small diameter gear, 86 ...Cam gear, 85
a...First toothless part, 85b...Second
Missing tooth part, 85Q... Third missing tooth part -86d...
...First return part, 866...Second return part, s6f...Third return part, 86g...
・First locking part, 86h...Second locking part, s
6i...Third locking part, 87...First
cam, 88...second cam, 89...third cam, 92...main gear, 98...
・Play lever 101...Play gear, 103
......First forward rotation relay gear, 106...
Second normal rotation relay gear, 108...First reel stand, 109...First reel gear, 111...
...Reverse relay gear, 113...Second reel stand, 114...Second reel gear, 116...
...Rapid feed lever, 116a...Circular long hole, 116C...Locking part, 118...
First rapid-forward gear, 119... Second rapid-forward gear, 120... Compression spring, 123... Rapid-forward control lever, 126... Torsion spring, 126
...Blocking lever, 126b...One end, 1
26c...Other end, 129...First solenoid, 131...Adsorption piece, 132...
・No. 1797, Solenoid arm, 134...Spring, 136.
...Switching lever, 137...Control rod, 138...First pinch roller control shaft, 1
39...Second pinch roller control axis, 140.
...Pad shifter control shaft, 141...Relay lever, 144...Erasing head control rod, 1
46...First erasing head control axis, 147...
...Second erasing head control axis, 148...
Return torsion spring, 149... Connection lever, 160
......Connection shaft, 161. River...Second solenoid arm, 163...Adsorption piece, 164...
・Second solenoid, 166...Torsion spring. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
6 Figure 27 Figure 28

Claims (4)

[Claims] (1) first and second running means for running the magnetic tape in opposite first and second directions, and a first position at which the first and second running means are stopped in order to be controlled; A control member that moves to a second position for a first running state and a third position for a second running state, and cam means for driving the control member to the first, second, and third positions. and a cam gear formed integrally with the cam means and having first, second, and third toothless portions corresponding to the first, second, and third positions, and a cam gear meshing with the cam gear for tape running. A tape recorder comprising: a drive gear interlocked with a motor; and trigger means for controlling the cam gear to bring the drive gear into a non-meshing state in which the toothless portion is located and into a meshing state. (2) A tape running means for running a magnetic tape, a control member that controls the tape running means by moving it to a first position where it is in a stopped state and a second position where it is in a tape running state; A first cam means to be driven, a cam control means to control the cam means, a fast-forward drive rotating body that rotates in the first and second directions in conjunction with a motor, and rotation transmitted from the fast-forward drive rotary body. , and when this fast-forward drive rotating body rotates in a first direction, the rotation is transmitted to the first or second reel stand to perform the first fast-forward operation of the magnetic tape, and when it rotates in the second direction, it transmits the rotation to the first or second reel stand, and when it rotates in the second direction, it transfers the rotation to the first or second reel stand. a fast-forward transmitting rotary body supported by a support member and subjected to a rotational load so as to transmit rotation to a first reel stand and move to perform a second fast-forward operation; and a fast-forward drive by controlling the support member. a fast-forward control member that controls rotation transmission from the rotating body to the fast-forward transmitting rotating body into a transmitting state and a non-transmitting state;
1. A tape recorder comprising: a second cam means which can be obtained only in the position shown in FIG. (3) A biasing means is added to bias the rapid-forward control member in a direction to bring it into a non-transmission state, and when the control member is moved from the second position to the first position by the first cam means, the fast-forwarding control member is activated. The second cam means controls the fast-forwarding control member against the urging means so that the control member is in the first position in a state of transmitting rotation from the fast-forwarding driving rotary body to the fast-forwarding transmitting rotary body; When the cam control means is actuated from the first or second fast-forwarding state, the urging means instantly cancels the first or second fast-forwarding state.
3. The tape recorder according to claim 2, wherein the cam means and the fast-forward control member are associated with each other, and the first and second fast-forward operations are performed with the magnetic tape in contact with the magnetic head. (4) A first device that runs the magnetic tape in the first and second directions.
, a second traveling means, a first position in which the first and second traveling means are in a stopped state, a second position in which they are in a first traveling state, and a second position in which they are in a second traveling state. a control member that moves to the third position; and a control member that moves this control member to the first, second, and third positions.
a movement control means for moving the magnetic tape to a position; first and second erasing heads each formed of a permanent magnet and provided upstream of the magnetic head in the first and second running states of the magnetic tape; An erasing head control member that controls the first and second erasing heads to separate and contact positions with respect to the magnetic tape, and the erasing head control member and the control member are selectively operated in a non-interlocking manner during playback and in a non-interlocked manner during recording. a connecting means for interlocking the erasing head control member, and the erasing head control member is interlocked with the control member by the connecting means only during recording, so that when the control member is in the first position, the first and second erasing heads are moved from the magnetic tape. From the separated state to the second position, only the first erasing head is in contact with the magnetic tape, and the third erasing head is in contact with the magnetic tape.
A tape recorder characterized in that the tape recorder is configured such that only the second erasing head is in contact with the second erasing head in the state of the tape recorder.