JPH04209348A - Tape player - Google Patents

Abstract

PURPOSE:To eliminate the looseness of a tape by restricting the movement of a head plate on the way of the head plate moved to a play position from a non-play position, and releasing the restriction of the movement of the head plate when it arrives at the end position. CONSTITUTION:When a cassette is inserted in a cassette holder, an eject lever 4 is retreated to this side and a control switch S1 is actuated. Then, power is fed to an electromagnetic actuation body 43 and a motor 29. By the rotation of the motor 29, a head plate actuating mechanism 50 is started to be actuated. Simultaneously, coaxial gears 93f and 93r, transmitting gears 90f and 90r meshed with the gears 93f and 93r and gears 95f and 95r meshed with the gears 9Of and 9Or are respectively rotated and reel shafts 94f and 94r are respectively rotated in a reverse direction. In the case that the tape is loosened, the looseness is eliminated. When the tape is strained, the rotation of the shafts 94f and 94r is restricted and the shafts 94f and 94r and the gears 95f and 95r become a slip state. Then, such a state is maintained until the head plate 27 arrives at the play position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tape player that effectively removes tape slack.

Conventional technology Conventional tape slack removal I! As a tape player with this function, one reel stand is held in a locked state in the non-playing state, and when the power is closed due to loading a cassette, the other reel stand on the take-up side is rotated, and the rotation causes the tape to be played. The tape player is particularly configured to release the locked state of the - side reel stand and set the tape player to the play state in the process of taking up the slack and moving the head plate from the non-play position to the play position by the head plate operating mechanism. 1977
In Publication No. 48840, after loading a cassette, a pair of reel stands are each rotated in the winding direction to remove slack in the tape, and then the slack removal signal is used to remove the slack in the tape.
For example, Japanese Patent Publication No. 58-26090 discloses a configuration in which an electromagnetic plunger is actuated to guide a head plate from a non-play position to a play position by a head plate operating mechanism to set the tape player in a play state.

Problems to be Solved by the Invention According to the configuration shown in Japanese Patent Application Laid-open No. 59-48840 (hereinafter referred to as the former), the slack in the tape is taken up by the rotation of the one side rail, so the tape As is well known, tape players are equipped with fast forward and rewind mechanisms.
Generally, the rewinding mechanism moves the head plate back to an intermediate position between the raised play position and the play position by operating a control lever, loosens the pressure contact between the tape and the tape, and also releases the pressure contact between the pinch roller and the capstan shaft. Therefore, in the former configuration, the tape slack is taken up during the time when the motor rotates when the cassette is loaded, one reel table rotates, and then the head plate is from the play position to just before the retract position during fast forwarding and rewinding operations, so the time required to take up slack in the tape is short, and if there is a large amount of slack in the tape, it is not possible to remove the slack sufficiently. There was this inconvenience.

Also, Special Publication No. 58-26090 (hereinafter referred to as the latter)
According to the configuration shown in , since the pair of reels are rotated in the winding direction, the amount of slack removed from the tape is doubled compared to the former, but after the slack in the tape is removed and the tape becomes taut, Since the head plate operating mechanism is configured to operate, the time from when the motor rotates when a cassette is loaded and the pair of reels rotate in the winding direction until the head plate advances to the play position is the time required for the tape to slacken. It varies depending on the amount, which makes the playing movement inconsistent, and also! It has the disadvantage of requiring a magnetic plunger, resulting in high cost.

Therefore, the present application aims to improve the above-mentioned defects of the conventional device.

Means for Solving the Problems In order to achieve the above-mentioned object, the present application uses a motor that rotates by inserting a cassette, and a reel gear on the reel shaft.
#l A pair of engaged reel rotation mechanisms, which are rotated by the motor and mesh with the pair of reel gears in a non-playing state, and one of which meshes with the head plate when it reaches the play position. a transmission mechanism including a pair of transmission gears that are opposite to each other from a reel gear; and a head plate operation which is actuated by the motor to bias a spring, and this biasing force guides the heel plate from a non-playing position to a playing position. a mechanism, the head plate actuating mechanism restraining the movement of the head plate during the movement of the head plate from the non-playing position to the playing position, and in connection therewith, when the head plate actuating mechanism reaches its end of actuation position; It is characterized by comprising a head plate one-no-lock mechanism for releasing the movement restraint state of the head plate, and in the above, the transmission mechanism includes transmission gears rotatably provided on the capstan shafts, respectively. A pair of supported rotary plates and a capstan shaft are respectively rotatably supported, and are operated relative to each other depending on the tape running direction, so that one rotary plate is provided with a direction in which the transmission gear moves away from the corresponding reel gear. energizes rotational force,
The other rotating plate includes a pair of elasticity imparting plates that maintain the transmission gear in a state of meshing with the corresponding reel gear, and the pair of rotating plates has a head plate that maintains the meshing state of the transmission gear and the reel gear. Head plate lock 8 from position! A cam part is provided to hold the head plate until the side is restrained by the side, and the head plate is rotated by the rotation of the motor. an actuating plate that pulls a spring that biases the head plate in the play direction, and a head plate locking mechanism is rotatably attached to one end of the head plate locking mechanism that locks the head plate while the head plate is moving from the non-play position to the play position. A locking stopper is attached to the other end of the actuating plate to interact with it when the actuating plate reaches its final operating position.
It consists of a locking plate each having a receiving piece that applies a rotational force in a direction to release the locking state between the hend plate and the stopper, and a spring that holds the locking plate in the reciprocating position.

How it works When you load a cassette into the cassette holder,
The cassette moves to the play position and the power switch closes.
The motor rotates.

Then, due to the rotation of this motor, the pair of reel rotation mechanisms rotate in the winding direction, and as a result, if there is slack in the tape, this slack is removed and the tape becomes taut, and the reel shaft and reel gear become frictionless. Because of the engagement, the reel shaft maintains frictional rotation while holding the tape under tension.

On the other hand, due to the rotation of the motor, the head plate actuating mechanism operates and biases the spring, and this (=j force) moves the head plate from the non-play position to the play position, and during the movement, the head plate locks the head plate. The mechanism restricts its movement.

The head plate actuating mechanism further pulls the spring and increases its biasing force while continuing to operate, and when the head plate actuating mechanism reaches its final actuating position, the head plate actuating mechanism operates together with this. , the restraint of the head plate is released, and the head plate is instantly guided to the playing position by the large biasing force of the spring.

Therefore, according to this configuration, it is possible to remove slack in the tape from the time when the cassette holder moves to the play position due to loading of the cassette and the motor begins to rotate until the head plate operating mechanism reaches its final operating position. In addition, the time from when the cassette is loaded until the tape becomes in the playing state can be set constant regardless of the degree of tape slack.

Example Embodiments of the present application will be described in detail below with reference to the drawings.

(1) is the lid frame, and on one side (right side) there is a fast forward tape I! The horizontal operation levers (2) and (3) are equipped with horizontal movement that can be moved back and forth, and the other side (left side) is equipped with an eject lever (4) that can be moved back and forth in a vertical position. . (5) has a front frame (5)a which is supported on both sides of the front end by a pivot (6) so as to be tiltable in the vertical direction with respect to the lid frame (1), and a front frame (5)a which is connected to the rear edge and can move up and down in a horizontal state. A cassette holder consisting of a rear frame (5)b, which has a guide groove (7) extending in the front-rear direction in the center of the front frame (5)a, and a cassette holder in the guide groove (7). When C is inserted into the cassette holder (5), an engagement piece (8) that engages with one of the glue holes is slidably attached.

(9) has one end attached to the upper surface of the front frame (5)a with a pivot (10).
), and the other end of a connecting rod (I2), one end of which is supported by a branch (]]) provided on the eject lever (4), is locked at the intermediate portion. A reversing spring (13) is attached to the tip of the piece and the engaging piece (8) to normally press the engaging piece (8) to the eject position of the cassette C.
) is the installation. (14) is attached to the inner surface of the upper part of the front frame (5)a of the cassette holder (5).
), which is horizontally rotatably attached, and has an operating piece (15) on one side extending across the guide groove (7), and has an outer side. A tongue piece (16) is provided on the side, and this is the lid frame (1).
The cassette holder (5) is held in a horizontal state via the holding member (14) by contacting the upper edge of the side wall (1a) of the lid frame (1). (17) is the side wall of the lid frame (1) (1) a, as shown in Figures 2A and 2B, the pivot (1
A plate-shaped actuating member (17) is vertically rotatably pivotally mounted via a stopper (17)a provided on the eject lever (4) and extends rearward from the pivoting member (17). a locking portion (2) that locks with the eject lever (19) to hold the eject lever (4) in the eject position against its biasing spring (20);
1) and a piece (17) b which also extends forward from the pivot joint.
There is said skein.

A locking pin (23) is provided to lock the notch groove (22) provided on the side surface of the front frame (5) of the lid holder (5), and the locking pin (23) locks with the notch groove (22) provided on the side surface of the front frame (5) of the lid holder (5). A spring (24) is tensioned between the locking pin (23) and the locking pin (23) in a downward direction. (25) is a restoring spring of the holding member, (27) is a rad plate provided with a head (28), and (29) is a motor.

<Operation of the cassette holder> However, when the cassette C is inserted from the front into the rear frame (5) b of the cassette holder (5) from the non-playing state shown in Fig. 1.2, the engaging piece (8) ) is engaged with one of the glue holes of the cassette case (8), and the engaging piece (8) moves forward, and along with this movement, the reversing spring (1)
3) is reversed, and due to its reversal elasticity, the cassette C, together with the engaging piece (8), automatically penetrates deep into the cassette holder (5). Then, the action piece (15) crossing the guide groove (7) is pressed against the cassette C, so the holding member (
14) horizontally rotates counterclockwise in Fig. 1 against the spring (25), and as a result, the tongue piece (J6) comes off the upper edge of the side wall (1) a of the lid frame (1). In the non-playing state, the rear frame (5) of the cassette holder (5) was held in a horizontal state via the holding member (4) due to the contact between the tongue piece (16) and the side wall (1) a. A is allowed to tilt downward. Therefore, the spring (24) causes the actuating member (17) to rotate counterclockwise in FIG. The eject lever (4) is projected by the spring (20) to a position where the eject operation is possible, and the front frame (5) a is turned downward through the engagement between the locking pin (23) and the notch groove (22). At the same time, the rear frame (5)b lowers horizontally to enter the play state as shown in Fig. 3.4.

Furthermore, when the eject lever (4) is pushed in against the spring (20) from the play state shown in Fig. 3.4, the spring receiving part (9) is moved counterclockwise in Fig. 3 by the connecting rod (12). Since the reversing spring (13) rotates in the direction, the movement of its free end causes the reversing spring (13) to perform a reversing operation, and the reversing elasticity guides the engaging piece (8) together with the cassette C into the guide groove (7), as shown in FIG. , it moves toward the front, that is, in the eject direction.

On the other hand, the tip (4)b of the ejector reel (4) rotates the actuating member (17) clockwise in FIG. 4 against the spring (24), so that the locking pin (23) The front frame (5) a of the cassette holder (5) tilts upward by being engaged with the notch groove (22).

Furthermore, when the cassette C moves in the ejecting direction together with the engagement piece (8), the pressure on the operating piece (15) is released, so the holding member (14) is moved clockwise in FIG. 3 by the spring (25). Rotates, and due to its rotation,
When the front frame (5)a reaches a horizontal state, the tongue piece (16) of the holding member (14) is again pressed against the side wall (]) of the lid frame (1).
The cassette holder (5) is held horizontally together with the holding member (14) by contacting the upper edge of a, and when the eject lever (4) is released from this state, it is slightly moved back by the spring (20). Then, the stopper (19) is engaged with the retaining portion (21), and the non-playing state shown in FIG. 1.2 is restored.

Figures 5 and 6 show the operating mechanism (27) of the head plate (27).
50) in a non-play state and a play state, the actuating mechanism (50) has an intermediate gear mechanism attached to a drive gear (30) which is fixed to the output end (29)' of the motor (29). (3]) The main drive gear (
A notched gear (33) intermittently meshes with the notched gear (32), and is provided coaxially with the notched gear (33) and has a spring (
The elastic tongue piece (35) of 34) and the notched gear (
33), and a tomb-shaped cam piece (36) with a gradually increasing radius, which is provided coaxially with the cam piece (36), and the middle part is formed into a U-shaped cross section, and the middle part is rotatably pivoted to the three frames (1). (37), and the upper and lower pieces extend in opposite directions, and one piece (4
1) The tip of a has an abutment pin (38) that comes into contact with the outer periphery of the cam piece (3G), and the tip of the other piece (41) b has a downward facing part provided on the actuating plate (40), which will be described later. As shown in FIG. 9, the operating lever (41) comes into contact with the folding piece (40)
3. A pin (49) and a long hole (49) are located at the front of the top of the frame (1).
) ゛ It is attached so that it can move laterally by being engaged with the support piece (27) c provided on the head plate (27) in an inoperable state due to the biasing force of the spring (26) at one end in the elongated direction.
The contact portion (40)a, which is in pressure contact with the dot I/-to (27) and held in the non-play position by a spring (39) that always presses it in the non-play direction, is connected to the other end of the an actuating plate (40) each having a deflecting piece (40)b; and a locking means (42) for locking the rotation of the notched gear (33).
It is composed of. This means of locking (
42) is an electromagnetic actuating body (43) and its Rondo (43)
' is connected to the tilting piece (44) which horizontally rotates using the intermediate part as a fulcrum upon its operation. Notched gear (
33) and a fan-shaped protrusion (45) provided on the lower surface of the gear (33).

Furthermore, when the eject lever (4) is moved by the spring (20) to a position where the eject operation can be performed, (46) engages with the engagement protrusion (4) a provided on the lower edge of the eject lever (4), and the restoring spring is activated. (47) to the motors (two) and the electromagnetic actuating body (43)! The slide lever is operated to turn on the control switch S1 that allows electricity, and the rear end thereof is provided with a folding piece (46) a that comes into contact with the engaging protrusion (4) a. (48) is an auxiliary plate for mounting the control switch 81 and the slide lever (46).

<Operation of the head plate> However, when the cassette C is inserted into the cassette holder (5) in the non-playing state shown in Figure 1.2, the cassette holder (5) moves downward to the play position. At the same time, the engagement between the stopper piece (19) and the engaging part (21) is released, and the eject lever (4) protrudes to a position where the eject operation is possible. Then, press the eject lever (
The slide lever (46) that is engaged with the engagement protrusion (4)a provided in 4) slides toward this side (forward) against the restoring spring (47), as shown in Fig. 3. As a result, the control switch SI is turned ON and the motor (
29) and the electromagnetic actuator (43) are energized and actuated.

Then, since the notched gear (33) has been meshed with the main drive gear (32) in advance by the initial rotation imparting means, the notched gear (33) rotates clockwise in FIG. 5 as the motor (29) rotates. At the same time, the electromagnetic actuating body (43)
Due to the operation, a part of the 1lJi moving piece (44) tilts counterclockwise on the notched gear (33). On the other hand, as the notched gear (33) rotates, the abutment pin (38) of the actuating lever (41) slides along the circumferential surface of the cam piece (36) in a direction in which its radius gradually increases. 4]) rotates clockwise in FIG. 5 while pulling the actuating plate (40) against its spring (39), and this pulling action causes the head plate (27) to move through the spring (26). It moves in the play direction, but in the middle of the movement, the movement to the play position is stopped by a head plate locking mechanism (100), which will be described later.

On the other hand, when the notched gear (33) rotates close to -, the actuating plate (40) continues to move against the springs (26) and (39), and its abutting portion (40)a touches the head plate (27). The contact pin (38) separates from the support piece (27) a.
) reaches the maximum radius position of the cam piece (30), the actuating plate (40) moves the head plate four I! Structure (
100) is activated to release the locked state, the head plate (27) reaches the play position by the spring (26) and stops advancing, and the abutment pin (38)
) reaches the inclined part (36) a slightly beyond the maximum radial position of the cam piece (36) and slopes in the minimum radial direction.
The notch gear (33) comes off the lower gear (32) and the sixth
The play state shown in the figure is reached, and this play state is maintained by the engagement of the retaining portion (44) a of the tilting piece (44) with the protrusion (45).

In the play state described above, if the power switch is accidentally turned off without performing the eject operation, the power to the motor (29) and the 1IIF5 actuating body (43) is cut off, so the retaining portion of the tilting piece (44) (44) a and protrusion (
45) is released, the notch gear (33) is in a free rotating state, and the abutment pin (38) of the actuating lever (41) is pushed against the cam piece (36) by the biasing force of the spring (39).
After rotating the inclined piece (36) a slightly clockwise, the notch gear (33) meshes with the main drive gear (32) again, and the abutment pin (38) is at the uppermost radial position of the cam piece (36). Since the spring (39) returns, the actuating plate (40)
returns to the non-playing direction, and the actuating lever (41) rotates counterclockwise, causing the abutting portion (40) of the actuating plate (40) to
) Head play) (27) retreats to the non-play position due to engagement with a, and due to its retreat, the pressure contact between the pinch roller and the capstan shaft, which will be described later, is also released, causing deformation, etc. to the tape and the pinch roller. damage can be avoided.

Further, in the play state shown in FIG. 6, when the eject lever (4) is pressed against its spring (20), the slide lever (46) is activated by the restoring spring (47).
) and the control switch S+ is restored, so the motor (2
9) and the electromagnetic operating body (43) are de-energized. As already mentioned, the head plate (27) is retracted by the spring (26) to the non-playing position, and the cassette holder (5) is moved upwards to eject the cassette C. That is, the state is restored to the state shown in FIG. 1.2.

<Prevention of head plate malfunction> In this example, an auxiliary means is provided to ensure that the head plate (27) moves to the playing position without malfunction. Figure 7.8 shows a front view of the main part. ing.

i.e. head play) (27) and the corresponding ear frame (1)
In the base vi(1)c, there is a detection lever (51) located on the insertion opening side (front side) of the case 7C and extending in the left-right direction.
The base of the sleeve is vertically rotatably mounted on a pivot (52), and a sleeve piece (54) having a notch step (53) on the upper edge is integrally provided at the base. The detection lever (5
1) is constantly urged to rotate upward by a spring (55), and due to this urging, the notch step 1 (53)
The surface of the detection lever (51) is in contact with the lower surface of the head plate (27), and the detection lever (51) is tilted upward. Further, as shown in FIG. 5, on the lower surface of the substrate (1) c corresponding to the detection lever (51), an intermediate portion is horizontally rotatably mounted by a pivot (56), and one end portion ( right end)
At the tip of the working piece (57), and at the other end, an opening (5
A holding lever (61) is attached to which a portion (60) having a locking step (59) extends through the holding lever (61) and the detection lever (51).
) is rotatably biased in one direction (counterclockwise) by the spring (55) provided between the locking step (59) and the head play (27). The locking piece (62) is locked, and its rotation is restricted.

On the other hand, as mentioned above, when the cassette C is inserted into the ejector holder (4), the cassette holder (5)
) is lowered to the play position and retreated to the position where the eject operation is possible, it acts with the action piece (57) and moves the holding lever (61) against its spring (55) to the locking step ( 59) and the locking piece (62) provided on the head plate (27).
) is provided.

When the cassette C is inserted from the non-playing position shown in Figure 1.2, when it is fully inserted, the cassette holder (5) descends as described above, and in the process of descending, the cassette C is ejected. The lever (4) is released from its locked state and moved by the spring (20), that is, to a position where an eject operation is possible, as will be described later. Then, as shown in FIG.
5) Since it rotates clockwise against the 4 locking steps (5)
9) is disengaged from the locking piece (62), and the head play head (27) is moved in the play direction (rightward) by the head plate operating mechanism (50). On the other hand, as shown in Fig. 8, when the case holder (5) is lowered from the non-playing state, the detection lever (5) tilted upward (
51) is pressed by the cassette C and rotates clockwise in Fig. 8, but in this case, the cassette C is not fully braked.
Until the head plate (27) is lowered to the position, the side edge of the head plate (27) comes into contact with the cutout step (53) of the detection lever (51), and movement in the play direction is restricted.

When the cassette C reaches the play state correctly in this manner, the detection lever (51) becomes horizontal, and the head plate (27) reaches the play position without being restrained in any way.

Note that when the eject lever (4) is pressed from this state, the head plate (27) is moved in the non-play direction (to the left) as the head plate operating mechanism (50) returns as described above.

The above-mentioned auxiliary means are not particularly necessary in normal use of the tape player, but are effective in the following cases. i.e. head play) (27)
When the eject lever (4) is accidentally operated while the head plate actuating mechanism (50) is moving forward to the play position, the control switch S1 is turned OFF as the eject lever (4) moves forward. Therefore, the motor (29
) and T! The energization with the LM1 actuating body (43) is cut off, and the notch gear (33) is in a state of meshing with the main drive gear (32), and the head plate actuating mechanism (50) is also in the middle of operation, so the cam piece (36) causes the operating lever (41) to be placed in a state in which the head play 1-(27) is guided close to the play position.

On the other hand, as the ejector (4) continues to move forward, the cassette holder (5) rises to the non-playing position, and as a result of this rise, the cassette C collides with the magnetic head (28). ), etc., or the adjustment position of the magnetic head (28) may be disturbed.

Therefore, in order to prevent this habituation, in this example, in addition to the above-mentioned auxiliary means, as shown in FIG.
), and a trochanter (65) that acts with the cam piece (64) is provided at the tip of the leg piece (27) b extending in the left-right direction of the head plate (27).
7) is moved forward in the play direction by its operating mechanism (50), if the eject lever (4) is pressed by mistake, the cam piece (64) acts with the trochanter (65), causing the Even during operation of the actuation mechanism (50), the unrestrained head plate (27) is forcibly retracted to the non-playing position against the spring (26).

Then, as already shown in Fig. 5.6, the projecting piece (63) of the eject lever (4) moves rearward, so that the engagement with the operating piece (57) of the holding lever (61) is released. ,
The holding lever (61) is rotated counterclockwise by the spring (55), and the locking piece (62) of the head plate (27) is rotated counterclockwise by the spring (55).
) and the locking step (59) of the holding lever (61) engage to hold the head plate (27) in the non-playing position.

On the other hand, by further pressing the ejector lever (4), the cassette holder (5) rises, so the detection lever (5) is tilted upward by the spring (55) as shown in Fig. 7, and the head plate (27) is maintained in its retracted state, so even if the eject lever (4) is released, the head plate (27) and the cassette holder (5) remain inactive.

On the other hand, the plate operating mechanism (50) is locked in the middle of operation. If you reinsert the cassette from this state,
The head plate actuation mechanism (50) continues its operation, and the head plate actuation mechanism (27) is activated by the spring (26).
), the player quickly reaches the play position and enters the play state.

Furthermore, in this example, as shown in FIG.
A downwardly inclined piece (66) which is inclined downwardly is located close to the substrate (1)c of the refractory (1) facing the head plate (27). facing in the direction of movement of the plate (27), and to.

When the head plate (27) moves to the play position, it comes into contact with the downwardly inclined piece (66) and the head plate (27)
) and a plurality of protrusions ( 67 ) that support the lower surface of the head plate ( 27 ) horizontally through point contact to reduce sliding frictional resistance. 68) are provided respectively.

Therefore, in the non-playing position of the head plate (27), as shown in FIG.
) are in a separated state, and from this state insert the cassette C into the cassette holder (5) and attach it to the hend plate (2).
7) is head plate operation 1s! 1 (50), as shown in FIG. 8, the downwardly inclined piece (66) and the upwardly inclined piece (67) come into pressure contact with each other in an overlapping state, and due to this pressure contact, the player moves to the play position. A downward force P acts on (27), causing the head plate (27) to protrude (68)
It is pressed upward and placed without any play.

Figure 9 mainly shows the head plate (27), tape running switching mechanism (70), and henno plate Ronk mechanism (1).
00) is a plan view in a non-playing state showing the relationship with
The head plate (27) is connected to the fast forward lever (2).
) and the base (27) a, which is located on the lower surface of the rewind lever (3) and is long in the front-rear direction and has a magnetic head (28) at its center position, and the eject lever (4) from the center position.
A leg part (27)b extending in the direction of the side wall (1)a of the refractory part (1) and having a trochanter (65) at its tip, and a leg part (27)b extending from the front end of the base part (27)a to the side wall (1)a direction. A branch piece (27) c extending in parallel with the part (27) b extends so as to close between the leg part (27) b and the rear part of the base part (27) a, and has a hole ( The head plate (27) has a projecting portion (27) e which has an opening at 27) d, and this head plate (27)
The bottle (69) and long hole (69)"
The head plate (27) is attached to the support piece (27) so that it can move laterally in the left-right direction through engagement with the head plate (27).
7) and the above-mentioned actuating plate (40) with a spring (26).
is the installation.

As is clear from FIG. 9, the head plate (27
), the front and rear end portions 1 of the base (27) a have their respective ends pivoted to the substrate (1) c by pivots (71) f, (71) r, and pinch rollers (72) f, (
72) Bracket with r (73) f, (
73) r is wound into a coil at the center and supported by the head plate (27), and both ends extend linearly to connect the brackets (73) f and (73) r to the capstan shaft. (74) f , (74) A spring (75) that presses in the direction of pressure contact with r, and this spring (75)
The plastic fitting 1-(73)
Locking bottle (73)'f, (73) provided on f, (73)r
73)'r and locking holes (76)'r, (7
6) "r" are respectively provided.

The switching member (77) constituting the tape running direction switching 11111 (70) consists of a T-shaped plate piece, and the top piece (7
7) Both ends of a are bent obliquely, and the connecting holes (78) f and (7B) r provided at the tips thereof have their central portions connected to the capstan shafts (74) f and (74) r, respectively. Elasticity imparting plate (79) f, (79
) Connecting piece (80) provided at one end of r, (80)
r are connected, and in this connected state, the elasticity imparting plate (79
) f, (79) Latching piece (81) f provided on r
, (81) is held by a spring (82) stretched between r.

Further, rotary plates (83)f, (83)r are rotatably attached to the capstan shafts (74)f, (74)r.

The elasticity imparting plates (79)f and (79)r are made of Eii steel plates, and as shown in FIG. 10(a) and 1(b),
When the head play (27) moves forward to the play position, the bracket ( The first cam portions (84)f, (84)r that restrict the rotation of 73)f, (73)r are connected to the arcuate elastic pieces (86)f, (84)r formed in an inverted layer shape on the side edges.
86) r and the above-mentioned hanging piece (81) f at the bottom.

(8])r and connection pieces (80)f and (80)r, respectively, and an operating section (87) at the upper end of the front elasticity imparting plate (79)f for operating the changeover switch s2 for the channel switching circuit. ), and a rotating plate (83)f
, (83) r is the number]] As shown in Figures (A) and (B), there are locking grooves (88) f, (8B) r on the upper peripheral edge,
When the head plate (27) retreats to the non-playing position 1, it acts with the locking pins (73)'f, (73)'r and forces the rotating plates (83)f, (83)r. The second cam part (89) f, (89) r that rotates
is provided, and the lower part ↓ Koba transmission gear (90) f ,
(90) r are rotatably connected by axes <91) f and (9]) r.

Elasticity imparting plate (74) f, (7
4) "and rotating plate (83) f, (83) r are the 9th
As shown in the figure, the capstan shaft (74) f, (74
) r, and the elasticity imparting plate (
79)f, (79)r elastic pieces (86)f, (
The tip of 86) r is locked in the locking grooves (8B) f, (88) r of the rotating plates (83 f, (83) r. Also, the above-mentioned capstan shafts (74) f, ( 74) r, as shown in Fig. 5.6, there are flywheels (92) f, (
92) r, drive gear (93) f, (93)
The drive gear (93) f
, (93) r and the reel axis (94) f, (
94) Reel gears (95) f each pivoted on r.

(95) As shown in FIG. 9, there is a rotating plate (
Transmission gear (90) provided at (83) f, (83) r
) f , (90) r are the flywheel (92)
The rotation of f, (92)r is transferred to reel gear (95)f,
(95) r, respectively. In addition, (96)f and (96)r in the figure are rotating plates (83)
As f, (83) r rotates, the transmission gear (90)
f.

(90) r is the reel gear (95) f , (95) r
When separated from the rotating plate (83) f, (83)
It is a stopper that restricts the rotation of r, and also (97)
f, (97)r is the reel gear (95) f, (
95) Transmission gear (90) f for r, (90)
This is a stopper that regulates the optimal meshing state of r, and both are provided on the substrate (1)c.

The head plate locking mechanism (300) has a 9th 12th
As shown in the figure, a step (10) provided at the bent end of the leg portion (27)b of the head play (27) (27) is attached to the stop piece (102) at the other end, and the actuating plate is attached to the other end. (40) L
A locking plate (104) having a receiving piece (103) that engages with the bifurcated actuating piece (40)c, the center of which is pivotally attached to the base plate (1)c, and the stopper piece (102). ), a spring (105
).

Therefore, in the state shown in FIG. 9 in which the head play head (27) is retracted to the non-play position, the locking pins (73) provided on the brackets (73) f and (73) r
'f.

(73) 'r is a head play) The locking holes (76)f provided in (27) and the inner edges of (76)r are in pressure contact with each other, so that the pinch rollers (72)f,
(72) r is the corresponding capstan shaft (74) f
, (74) separated from r, and the rotating plate (83)
! , (83)r is the second cam part (89)f provided at the upper part of the periphery, (89)r is the bracket (73)
Locking bottle (73)'f provided in f, (73)r,
(73)'r, the capstan shafts (74)f, (74)r rotate clockwise in the figure, and each rotary plate (83)f, (83h) is provided at the bottom. The transmission gears C90)f, (9Ω) mesh with the corresponding reel gears (95f, (95b), respectively.

<Tape slack removal operation> Then, from this state, when the cassette C is inserted into the cassette holder (5), the cassette holder (5) lowers as described above, and the eject lever (4) moves back toward you. However, due to this backward movement, the control switch S1 is activated! The magnetic actuating body (43) and the motor (29) are energized, and as the motor (29) rotates, the head plate actuating mechanism (50) starts operating as described above, and at the same time the flywheel (92) f, (92)r
, and a drive gear (93) f coaxial with this.

(93)r, transmission gear meshing with this (90)f,
(90) r, reel gear meshing with this (95) f
, (95) r rotate, respectively, and the reel shaft (94)
f and the reel axis (9, or rotate in opposite directions, respectively.

If there is any slack in the tape in the loaded cassette C, remove it, and when the tape becomes tense, the reel shaft (
94) f.

(911) The rotation of r is restricted and the reel shaft (94) f
, (94) r and reel gear (95) f , (9
5) r is a slip state, and this state is maintained until the head plate (27) reaches the play position.

<Lock operation of the head plate> On the other hand, as mentioned above, the operation lever (41) rotates due to the operation of the head plate operation mechanism (50), and the operation plate (
When the head plate (27) moves forward in the playing direction due to the movement of the head plate (27), as shown in FIG.
is engaged with the stopper piece (102) and the head plate (27
) stops at an intermediate position between the play position and the non-play position, and the locking pins (73)'f, (73)'r engage with the second cam parts (89)f, (89)r. The slack-removed state of the tape is maintained.

Then, when the actuation plate (40) moves further, the actuation plate (40) moves further.
40) dances from the support piece (27)c of the head plate (27), and the actuating piece (40) moves near the maximum movement position of the actuating plate (40).
40) The receiver piece (103) is pressed by c, and the lock plate (
104) rotates counterclockwise in the figure against the spring (105), the stopper (102) comes off the step (101) and the head plate (27) moves against the spring (26).
Due to the biasing force of , it instantly moves in the playing direction and enters the playing state shown in FIG. 13. On the other hand, as the head plate (27) moves, the bracket (73) f at the front position 1 rotates clockwise in the figure, as shown in Figures 13 and 14, and the locking pin (73)' provided thereon rotates clockwise in the figure. f is the rotating plate (83)
The second cam part (89) provided at f comes off from the elasticity imparting plate (79) and comes into contact with the first cam part (84) f provided at f, so one pinch roller (72) f comes off from the elasticity imparting plate (79). The capstan shaft (74)f is brought into a non-pressure contact state, and one rotating plate (83)f is rotated clockwise by the elasticity of the elastic piece (86)f, so that the transmission gear (90)f is connected to the reel gear. (95) As it leaves r, its rotation is stopped by contact with stopper (96) f. On the other hand, the bracket 1-(73)r in the rear position rotates counterclockwise in the figure, and the locking pin (73)'r provided thereon engages the first cam portion (79)r of the elasticity imparting plate (79)r. 84) The pinch roller (72) r located at the rear but not in contact with the capstan shaft (74) r presses against the corresponding capstan shaft (74) r, and the transmission gear (90) provided on the other rotary plate (83) r. r is kept in mesh with the corresponding reel gear (95b).

Therefore, in FIG. 13, the transmission gear (90b
However, the corresponding drive gear (93) r and reel gear (
95) Since the tape is engaged with r, the tape is wound onto the reel shaft (94) r side at the rear position.

In the above case, when the tape is wound onto the reel shaft (94) f side at the front position, contrary to the case shown in FIG. (77) is performed by moving backward in the figure.

That is, when the tape running direction switching member (77) moves rearward in the figure by the tape running direction switching mechanism (70), the connecting piece (80) of the elasticity imparting plate (79)r at the rear position
) r and the connecting hole (
78) The engaging part with r is pressed backward and the elasticity imparting plate (7
9) r rotates counterclockwise, which causes the elastic piece (86
) The rotating plate (83) r also rotates counterclockwise due to the urging force of r. Then, the first cam part (84) r presses the locking piece (73) 'r of the bracket (73) r,
The bracket (73) r corresponds to the capstan shaft (
74) As the shaft (91) r moves away from r, the transmission gear (90) r moves to the reel gear (
95) Separate from r.

On the other hand, the elasticity imparting plate (79) f at the front position is connected to the connecting piece (
80) The upper connecting hole (7B) in the top piece (77) a is pressed and rotates counterclockwise, thereby biasing the elastic piece (86) f. Accordingly, the rotating plate (83)f also rotates counterclockwise. Then, the first cam part (84) f engages the locking pin (7) of the bracket (73) f.
3) ' Since the f side separates, bracket (73)
f is the capstan shaft (74) to which the pinch roller (72) f corresponds due to the biasing force of the spring (75).
At the same time, due to the movement of the shaft (91) f, the transmission gear (90) f moves the reel gear (95) at the corresponding front position.
) The state shown in FIG. 15 is achieved by meshing with f. Therefore, the tape is wound onto the front reel shaft (94)f.

That is, each time the tape running direction switching member (77) moves forward or backward, the tape running direction is switched.

By the way, in the play state shown in FIGS. 6 and 13, if the power switch is accidentally turned off without ejecting, for example by removing the car key, the motor (29) and the electromagnetic actuator (43) ) is cut off, the engaging portion (44) a of the tilting piece (44) and the protrusion (45) are no longer engaged, and the notch gear (33) is in a free rotating state. , the contact pin (38) of the actuating lever (41) rotates the inclined piece (36) a of the notched gear (33) slightly clockwise due to the biasing force of the spring (39), and then rotates again with the main drive gear (32). As a result of the engagement, the abutment pin (38) returns to the minimum radius position of the cam piece (36), so the spring (39) causes the actuating plate (40) to return to the non-playing direction, and the actuating lever (4) ) rotates counterclockwise, and the contact portion (40) of the actuating plate (40)
The head plate (27) retreats to the non-playing position by engagement with the rear pinch roller (7).
2) r separates from the capstan shaft (74) r.

On the other hand, in the above, when the head plate (27) retreats, the step (101) and the actuating plate (40) provided on the leg piece (27)b also move aJIA, so the lock plate (104)
is moved back clockwise in the figure by the spring (+05), and the locking hole (76) of (27)
Since the locking pin (73)'f is pressed in the same direction by the edge of f, the locking pin (73)''f is pressed against the rotating plate (8
3) Working with the second cam part (89) f of f, the rotating plate (
83) f is rotated counterclockwise in FIG. 13 against the elastic piece (86) f, thereby causing the reel gear (95) f to
Transmission gear (90) that is separated from f is forced to υ~
Lugya (95) meshes with f to form the non-playing state shown in FIG.

This relationship is the same even when the power is turned off without an eject operation in the play state shown in Fig. 15. In this case, the rear rotating plate (83) is ) r will be forced to rotate clockwise.

<Fast-forward and one-rewind operation of the tape> Next, from the play state shown in Figures 13 and 14, the fast-forward operation lever (2) is operated to proceed by known means.

The head plate (27) moves back slightly against the spring (26), and the edge of one locking hole (76)f provided in the head plate (27) touches one locking pin (73)'f.
The second cam portion (89) f of the rotating plate (83) f is in contact with
It stops before it acts on the other locking pin (73).
'r is the locking hole (7) provided in the head plate (27).
6) If the rotating plate (83b's second
It stops before it interacts with the cam part (89) f. As a result, the rear pinch roller (72) r separates from the capstan shaft (74) r. That is, as shown in FIG. 16, since the pinch rollers (72)f (72b) are both separated from the capstan shafts (74)f and (74)r, the tape is fed at high speed.

Further, since the backward stroke of the head plate (27) is short, the head plate locking mechanism (100) has a stopper (100).
2) does not engage with the stepped portion (101).

In the above, when operating the rewind lever (3) instead of the fast forward operating lever (2), the tape running direction switching mechanism (70), which will be described later, is activated, and the pinch roller (72) f is operated in the same way as above. (72) The tape is moved away from r and fed at high speed.

Next, the tape running direction switching mechanism (70) will be described in detail.
2. As shown in Figure 13, there is a rectangular cam hole extending from the leg piece (77)b of the tape running direction switching member (77) and extending from side to side in the figure.
111), and has a tongue piece (113) at the tip that engages with a branch piece (112) erected on the lid frame (1) and prevents sliding in the front-rear direction. Operating part (114)
As is clear from FIGS. 16 to 20, there are notches (115) a at two locations in the diametrical direction.

(115) a notched gear (115) having b, a restraining piece (116) having claw pieces at two diametrical locations and integrally provided at the intermediate portion of the notched gear (115), and the cam. A working pin (11B) eccentrically provided on the notched gear (115) facing the hole (111) is bent in an L-shape on a plane, and the bent portion is pivotally connected by a pivot (119), and An engagement recess (12) is formed at the tip of the short piece (120)a extending in the direction, and a long piece (120) extending in the left and right directions (
120)b, a locking pin (122) that locks with the claw of the restraint piece (116) is placed at the tip of the locking pin (122), and the contact portion (
a locking lever (120) having a locking lever (123); a spring (124) tensioning the locking lever (120) in the direction of the restraint piece (116); and the notched gear (11).
5) and an operating gear (125) that meshes with the actuating gear (125).

<Tape running direction switching operation> However, the missing gear (115) rotates half a turn and stops.
In addition, the rewind operation lever (
3) forward against its restoring spring, and as a result, the locking lever (120) in Figure 17 is
It is rotated counterclockwise around the pivot (119), and the locking pin (122) is disengaged from one of the claws of the restraint piece (116), allowing rotation of the notched gear (115). Therefore, although not shown, due to the elasticity of a spring that provides initial rotation, the notch gear (115) starts rotating clockwise and meshes with the operating gear (125). The operating gear (125) is a constant drive motor (29)! Since the notch gear (115) is driven by the drive gear (93) f of the one flywheel (92) f which is rotated by this, via the intermediate gear (126), the notch gear (115) then rotates. On the other hand, the missing gear (115)
As the locking lever (120) rotates, the spring (
124), the locking pin (122) comes into contact with the outer periphery of the restraining piece (116). In this state, the notch gear (115) rotates approximately half a turn, and one notch (115)
) At position a, the engagement with the operating gear (125) is released,
The locking pin (122) locks with the other claw piece of the restraint piece (116), and rotation of the notched gear (115) is locked.
This is the second switching position.

Therefore, by half-rotating this notch gear (115), the states 13, 141m and FIG. 15 are alternately repeated, and the running direction of the tape is not switched.

That is, as shown in FIG. 14, the working pin (118)
At the first switching position, the switching member (77) is moved to the forward position so as to be in contact with one inner edge of the cam hole (111);
Further, as shown in FIG. 15, the operating pin (118) is in contact with the other inner edge of the cam hole (111) in its second switching position, and moves the switching member (77) to the rear position;
As a result, the running of the tape is changed, and the pinch roller (72) r is moved back from the rear capstan shaft (74) r to the extent that it is slightly flailed, and the front capstan shaft (
A pinch roller (72)f is pressed against 74)f, and the tape is wound onto the reel shaft (94)f side.

Tape end detection operation> Next, when the tape reaches the end position, a tape end detection mechanism (
128) will be explained in detail with reference to FIGS. 17 to 21. (1
30)f, (130)r are the reel gears (95)
The reel gear is further coaxially and frictionally engaged with the lower surface of the reel stand (131)f, (131)r which is coaxially and frictionally engaged with f, (95)r. (
95) f, (95) r and reel stand (131) f,
(131) A rotating lever that rotates with r, the front rotating lever (130) f has a V-shaped opening at a part of its outer periphery, and a pair of pins (130) at both ends of this V-shaped part. a,
(130)b is provided, and the rear rotating lever (
130)r has one pin (130)c on a part of the outer circumference
are provided respectively. (132) is the notched gear (115)
) is rotatably supported on the shaft of the
32) A, (132) b, and (32) c are the tE moving members, and the tip of the 11111th piece (132) a extending in the direction of the reel gear (95) r at the rear position includes:
In the drive rotation direction of the reel gear (95) r, the rotation lever (
130) The text part (133) that comes into contact with the bottle (130) c held at the tip of r is also attached to the reel gear (95) in the forward position.
At the tip of the second leg piece (132) b extending in the direction f, a rotating lever (
A retaining stepped portion (134) that comes into contact with one of the bins (130)a, which is provided at the tip of 130)f, is further connected to the operating gear (
The third leg piece (132) c extending in the direction of the tape running direction switching mechanism (7
An operating piece (136) is provided at one end of the locking lever (120), which is bent so as to come into contact with the abutting portion (123) provided at the tip of the long side (120)b of the locking lever (120). (137
) is a concave cam attached to the operating gear (125) and has two curved surfaces (137)a and (1) with different radii.
37) b. (13B) is projected into the concave cam (137) and is connected to the sliding pin (13B).
5) A protrusion acting with (139)f, (13
9) r is connected to each pin (130) b and (13
0) It is a stopper that comes into contact with c.

Therefore, in FIG. 17, which shows a state in which the reel gear (95)r at the rear position rotates and the tape is wound forward, the reel gear (95)r rotates clockwise. Therefore, the rotating lever (130)r, which is frictionally engaged with the handle base (31)r, is rotated clockwise, and the bottle (130)c is rotated by the swinging member. The protrusion (13) provided on the first # piece (132)a of (132)
3), and as a result, the swinging member (132) receives a rotational force in the clockwise direction, and the 31j of the swinging member (132)
The sliding pier (135) provided on the piece (132)c is in pressure contact with the cam surface of the concave cam (137).

On the other hand, the operating gear (125) is connected to the driving gear (
93) Since it is constantly rotating via f and the intermediate gear (126), with the rotation, the swinging member (132)
It swings between the concave force 'A (137)a and the small diameter curved surface (137)b.

In this way, the playing state in which the swinging member (132) swings due to the urging force of the rotating lever (130) r and the sliding action between the curved surface of the concave cam (137) and the sliding pin (135) is achieved. When the tape reaches the end position, the reel stand (
+31) r stops rotating, and the rotation lever (+30
) r also stops, so the rotation biasing force on the swinging member (132) disappears.

Then, due to the subsequent rotation of the operating gear (125), the sliding contact pin (135) moves against the small diameter curved surface (
]17) It moves concentrically through sliding contact with b, so as shown in FIG.
It engages with the protrusion (13B) provided in the center and is forcibly moved further in the centripetal direction.

As a result, as shown in FIG.
20) The contact portion (12) provided at the tip of the long piece (120)b
3), thereby locking the locking lever (120).
rotates counterclockwise against the spring (124), so the locking pin (122) provided on the long piece (120)b of the locking lever (120) locks into the restraint member (1]6). is removed from the claw piece, and the notched gear (115) is allowed to rotate, and as a result, as already described in the tape running direction switching mechanism (70), the rewind operation lever (3) is pressed. , a tape running direction switching member (77)
is activated, the running direction of the tape is switched, and the reel stands (131)f and (131)r in the figure are rotated counterclockwise to the rear position as shown in FIG. The pin (130) c of the rotary lever (130) r contacts the opposing stopper (139b), and the pin (130) a of the rotary lever (130) f in the forward position contacts the opposite stopper (139b). It engages with the retaining step (134) of the 2IllI piece (132)b, and the sliding pin (135) again comes into pressure contact with the cam surface of the concave cam (137).

Further, in the state shown in FIG. 20, when the tape reaches the bonding end position 1, the rotation biasing force of the rotation lever (130) f disappears, and the sliding contact between the sliding pin (135) and the concave cam (137) disappears. The contact state is released.

<Prevention of Malfunction of Tape End Detection Mechanism> By the way, in the present application, as is clear from FIG. 9'0)r are in a meshed state, so from this state, insert the cassette C into the cassette holder (5), bast it, and when the power is turned on, the motor (29) will drive. , as already mentioned, the pair of reel shafts (94) f , (94
) r immediately rotates in the opposite direction to tension the tape, and this condition is maintained for a short time until the head plate (27) is advanced into the correct playing position. This tension state of the tape is the same as the state when the tape has just reached the end position, and therefore there is a risk that the tape end detection mechanism will be activated and channel switching will occur, but in this application, this malfunction is prevented. As a means for preventing this, as shown in Figures 5.9.17 and 21, a bullet line (141) is provided in the middle of the operating lever (41) to restrict the operation of the tape end detection mechanism.

In the non-playing state (not shown in FIG. 5), its action is to engage with the other pin (130) b of the rotating lever (130) f and to urge the rotating lever (130) f to rotate clockwise. As a result, one of the bins (130) a is moved to the swing lever (
132) of the second leg piece (132) b of the retaining step (134)
The sliding pin (135) provided on the third leg piece (132) c rotates the swing lever (132) counterclockwise.
is pressed against the cam surface of the concave cam (137).

Here, for example, the cassette C is inserted, the cassette holder (5) is sewn, the motor (29) is energized and rotated, and the reel shafts (94)f and (94)r rotate in opposite directions. When the tape of the cassette C becomes tense and the rotation of the reel shafts (94)f and (94)r stops, the sliding pin (135) of the swing lever (132) is forcibly moved by the bullet (141). Since it is in pressure contact with the cam surface of the concave cam (137), the swing lever (132) does not swing and actuate the locking lever (120), and therefore the lateral operation of the tape material end detection I9 is restricted. Therefore, there is no risk of malfunctions being distinguished from the case where the end of the tape is detected.

In the above, when the head plate (27) advances to the play position due to the clockwise rotation of the operating lever (41), as shown in FIG. (141) Rotating lever (]30) f
The rotational biasing force against the tape end detection mechanism is released, allowing the tape end detection mechanism to operate.

Effects of the Invention As described above, according to the present application, while the motor rotates due to loading of a cassette, the slack in the tape is taken up while the head plate actuation mechanism reaches its operation end position. Since this is performed by the relative rotation of both reel axes, it is possible to sufficiently take up the slack in the tape.
Since the head plate actuating mechanism is guided to the play position by the biasing force of the spring accumulated until it reaches the final actuating position, the time difference between when the head plate actuating mechanism reaches the final actuating position and when the head plate reaches the play position This method has the advantage that there is almost no lag, and that the time from when the cassette is loaded until the tape becomes ready for play can be set constant regardless of the degree of tape slack.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a general plan view in a non-playing state G, FIG. 2A is a left side view thereof, and FIG. 2B is a left side view with the auxiliary plate omitted. Fig. 3 is an overall plan view in the playing state, Fig. 4M is a left side view with the auxiliary plate omitted, Fig. 5 is a partially omitted bottom view in the non-playing state, and Fig. 6 is a bottom view in the playing state. Fig. 7 is a front view of a portion of the detection lever in the non-playing state, Fig. 8 is a front view in the playing state, Fig. 9 is a plan view of the non-playing state with the cassette holder omitted, and Figs. ) is a plan view of the elasticity imparting plate, FIGS. 11(a) and (b) are plan views of the rotating plate, FIG. 12 is a plan view corresponding to FIG. 9 showing the locked state of the hand plate, The figure is a plan view corresponding to FIG. 9 showing the playing state, FIGS. The corresponding plan views, FIGS. 18 to 21, are plan views showing the operational relationship of the tape material end detection mechanism. In the figure, (1) is the crusher, (26) is the spring, [27] is the head plate, (29) is the motor, (
3o) is the drive gear, (40) is the actuation plate, (40)c is the actuation piece, (41) is the actuation lever, (50) is the head plate actuation mechanism, (51) is the detection lever, (7o) is the tape travel Direction switching mechanism, (72) Hinch roller, (74)
is the capstan shaft, (77) is the switching member, (79) is the elasticity imparting plate, (83) is the rotating plate, (84) is the first tension part, (87) is the elastic piece, (89) is Second cam part, (90)
is a transmission gear, (93) is a drive gear, (94) is a reel shaft, (95) is a reel gear, (100) is a head plate lock mechanism, (101) is a step, (102) is a stop piece,
(104) is a lock plate, and (105) is a spring. No' Fig. 7 Fig. 8 Fig. 14 Fig. 15 Fig. 80r 96r Fig. 18 133 130c 30 c Procedural amendment written form) February 29, 1992 Director General of the Patent Office Wataru Fukazawa 1, Display of the case 1990 Patent Application No. 207678 2,
Title of the invention Tape player 3, Relationship with the case of the person making the amendment Patent applicant Chu 10 Co., Ltd. 4, Agent 5, Date of amendment order 1992 - month, >, r date 6, Subject of amendment Details book

Claims (4)

[Claims] (1) A motor that rotates when a cassette is inserted, a pair of reel rotation mechanisms in which a reel gear is frictionally engaged with a reel shaft, and a reel rotation mechanism that is rotated by the motor and meshes with the pair of reel gears in a non-playing state. In addition, the transmission mechanism includes a pair of transmission gears, one of which separates from the reel gear in mesh with the head plate when the head plate reaches the play position, and a transmission mechanism that is actuated by the motor to bias a spring, and this bias force causes the head to move. The head plate actuating mechanism guides the plate from the non-playing position to the playing position, and the head plate actuating mechanism restrains movement of the head plate while the head plate is moving from the non-playing position to the playing position. 1. A tape player comprising: a head plate lock mechanism that releases the movement restraint of the head plate when the operation end position is reached. (2) The transmission mechanism includes a pair of rotary plates each rotatably provided with a transmission gear and each rotatably supported on a capstan shaft; They operate relatively, applying a rotational force to one rotating plate in the direction in which the transmission gear separates from the corresponding reel gear, and maintaining the other rotating plate in a state where the transmission gear meshes with the corresponding reel gear. a pair of elasticity imparting plates, and a cam portion is provided on the pair of rotating plates to maintain the meshing state between the transmission gear and the reel gear from a position where the head plate is not played to a position where the head plate is restrained by the head plate locking mechanism. A tape player according to claim 1. (3) Claim 1 or 2, wherein the head plate operating mechanism comprises an operating lever that rotates as the motor rotates, and an operating plate that pulls a spring that biases the head plate in the play direction by rotation of the operating lever. Tape player as described. (4) The head plate locking mechanism is rotatably attached, and has a stop piece at one end that engages the head plate while the head plate moves from the non-play position to the play position, and an actuating plate at the other end that operates the head plate. A locking plate having a receiving piece that acts with the receiving piece to apply a rotational force in a direction to release the locking state between the head plate and the stopper when the locking plate reaches the terminal position, and a locking plate that moves the locking plate back and forth. 4. The tape player of claim 3 further comprising a spring for holding the tape player in position.