JPS6028056A - Program searching mechanism of music - Google Patents

Abstract

PURPOSE:To decrease considerably the resetting time to a play mode by actuating both trigger and oscillating levers by means of two cams set on the upper surface of a toothless gear when an intermusic space is detected in a rapid traverse and a rewinding modes. CONSTITUTION:The 1st and 2nd cams 71 and 72 are set on the upper surface of a toothless gear 34 and have contact with a trigger lever 115 and a rocking lever 79. When a head detects an intermusic space in the rapid traverse and rewind modes, the gear 34 is revolved clockwise. Thus both levers 79 and 115 are actuated via the cams 71 and 72, and the lock of a rapid traverse lever 102 is released with right direction replacement of the lever 115. At the same time a pinch roller is also press-fixed to a capstan. Thus a play mode is reset. In such a way, the time to reset the play mode is considerably decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a song cue mechanism provided in a cassette tape recorder.

BACKGROUND ART Conventionally, a single cam operates a trigger lever to release the fast forward or rewind locked state and return to the playing state, while at the same time operating the trigger lever.

For this reason, it may take about one second to return to the playing state after detecting a song interval, and it may take about one second to reach the beginning or end of a song.

Purpose The purpose of the present invention is to provide a song cueing mechanism that shortens the time required to return to the performance state by licking at the beginning and end of a song even if the length of one song is short. be.

Example The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a simplified plan view of a cassette tape recorder and/or player in which the present invention is implemented, FIG. 2 is a front view seen from the arrow A side in FIG. The figure is a side view seen from the arrow B side in FIG. 1, FIG. 4 is a side view seen from the arrow C side in FIG. 1, FIG. 5 is a bottom view, and This figure is a rear view seen from the arrow mark side of FIG. 1, and FIG. 7 is a plan view showing a simplified internal structure of FIG. 1.

A cassette support member 3 is provided upright on the left side of the substrate 1 in FIG. 1, and supports the cassette storage portion 2 so as to be movable up and down with respect to the substrate 1. A suppressing means 5 for turning on the switch 4 is provided near the tip of the support member 3 (the left end in FIG. 3). When the cassette is inserted into the cassette storage section 2, the cassette storage section 2 is lowered toward the substrate 1, and the switch 4 is turned on by the suppressing means 5, thereby energizing the motor 10. When the motor 10 is energized, a pulley 12 . The partially toothed gear 34 is rotated clockwise via the gear 28 etc.
In connection with this, the head stand 85 moves to the left in FIG.
This loads the cassette into position and begins playing or recording.

A motor 10 is provided on the board 1 . A pulley 12 is fixed to the output shaft of the motor 10 as shown in FIG.

An endless belt 1 is attached to the pulley 12 and the flywheel 14.
6 is applied, thereby driving the flywheel 14 to rotate. A pulley 18 is fixed to the output shaft of the motor 10 coaxially with the pulley 12 . An endless belt 24 is passed around the pulleys 18 and 20°22. A gear 26 is provided coaxially with the pulley 20.

This gear 26 is meshed with the gear 28, and the gear 28 is in mesh with the gear 3.
It is meshed with 0. A gear 32 is fixed to the rotating shaft of the gear 30. This gear 32 is a partially toothed gear 3 pivotally supported on the base plate 1.
4 can be engaged with each other. When the motor 10 is driven, the pulley 11.18°20.22% gear 26.28,3
0.34 and the flywheel 14 are constantly driven to rotate as shown by the arrow.

A gear 3 is attached to the pulley 22 at a position above the base plate 1.
6 are fixed coaxially. The winding rotation shaft 38 is inserted into one reel of the cassette.

A roller 40 and a gear 42 are provided. The rotational driving force of the pulley 22 and the gear 36 is transmitted to the roller 40 and the rotating shaft 38 via the gear 44°42.

A rotating shaft 46 of the gear 36 is fixed to a switching piece 48 for switching the running direction of the tape. The switching piece 48 is connected to the rotating shaft 46
It extends in the left-right direction in FIG. A gear 52 is provided on a rewinding rotating shaft 50 that is inserted into the other reel of the cassette, and is brought into mesh with the gear 36 by the downward displacement of the switching piece 48 in FIG. In the playing or fast-forwarding state, gear 36 is separated from gear 52. In the rewinding state, the gear 36 meshes with the gear 52, and therefore the rotational driving force of the gear 36 is transmitted to the gear 52, thereby rotating the rewinding rotating shaft 50 in the opposite direction to the winding rotating shaft 38. .

FIG. 8 is a perspective view of the vicinity of the tip of the support member 3.
The figure is a partially enlarged perspective view of FIG.

FIG. 10 is a side view corresponding to FIG. 3 with the cassette inserted. A contact member 60 is rotatably supported by a shaft 61 at the distal end of the support member 3 . This abutting member 60 is composed of a substantially fan-shaped plate portion 62 and a protruding piece 63 connected to the plate portion 62. A contact member 60 and a plate-shaped portion 62 are arranged between the support member 3 and the cassette storage section 2, and a protruding piece 63 is arranged inside the cassette storage section. Plate-shaped part 6
A protrusion 64 is formed on the surface of 2, and this protrusion 64
One end of the spring 65 is fixed to. The other end of the spring 65 is fixed to the substrate l. When the cassette is inserted into the cassette storage part 2, the protruding piece 63 is pressed by the cassette, so that the abutment member 6o resists the spring force of the spring 65, and the shaft 61
It is angularly displaced. At this time, plate-shaped portion 62#:t,
A cylindrical projection 6 provided on the side of the cassette storage section
6 and is displaced. When the abutting member 6o is angularly displaced, the abutting piece 67 of the switch 4 presses the switch 4, resulting in a conductive state and energizing the motor 1o.

FIG. 11 is a perspective view of the vicinity of the upper part in FIG.
FIG. 12 is a perspective view seen from the arrow E side of FIG. 11,
FIG. 13 is a plan view of the partially toothed gear 34, and FIG. 14 is a side view of the partially toothed gear 34 as viewed from the side indicated by the arrow F in FIG. Missing tooth gear 34
Vi on the upper surface, a cylindrical first cam 71 is provided upright near one end of the toothless portion 70, and a second cam having a shorter length than the cam 71 is provided near the other end of the toothless portion 7o. 72 will be erected.

Protrusions 73 and 74 are provided on the lower surface of the partially toothed gear 34 at positions corresponding to the cams 71 and 72, respectively.

The protrusion 73 has a generally U-shaped horizontal cross section, and its opening faces the support shaft 75 of the partially toothed gear 34 . Protrusion 74
have an arcuate horizontal cross section and are arranged along the circumferential direction around the support shaft 75.

An electromagnetic hook 76 is provided on the left side of the partially toothed gear 34 in FIG. A coil 77 is housed in the electromagnetic hook 76, and when the switch 4 is turned on, this coil 77
is excited. A rotation prevention piece 78 for preventing rotation of the partially toothed gear 34 is provided at the lower end of the electromagnetic hook 76 . This rotation blocking piece 78 is connected to the partially toothed gear 3 as will be described later.
It is configured to be able to move toward and away from 4. A swing lever 79 is provided above the electromagnetic hook 76 in FIG. As shown in FIG. 16, the swing lever 79 includes a U-shaped base 80 and arm portions 81 extending from both sides of the base 80.
It consists of 82. By an ejecting spring 83 fixed to the end of the arm 82.

Swing lever 79Vi is biased to the right in FIG. The arm portion 82 of the swing lever 79 is arranged above the partially toothed gear 34 and in contact with the first cam 71 . When the partially toothed gear 34 is rotated clockwise, the swing lever 79 is displaced to the left in FIG. 12 via the first cam 71 against the spring force of the spring 83. By the displacement of the swing lever 79, the head stand 85 is displaced to the left in FIG. 1 and comes into contact with the tape, thereby entering the playing or recording state.

FIG. 15 is a perspective view showing a configuration related to the head stand 85, and FIG. 16 is a simplified exploded perspective view of FIG. 15. The head stand 85 provided on the substrate 1 has a plate-like body 86
and a retaining piece 87 extending in a direction perpendicular to the plate-like body 86. A locking portion 87 a bent in an L-shape of the retaining piece 87 is in contact with a free end portion of the arm portion 81 of the swing lever 79 . Therefore, the head stand 85, which is always biased downward in FIG. 15 by a not-shown spring, is prevented from being displaced downward by the swing lever 79. A head 88 is fixed onto the head stand 85 with pins or the like.

A pinch roller 89 is attached to the support member 9 on the left side of the head stand 85.
The pinch roller 89 is rotatably supported by the capstan 92 and can be pressed against and separated from the capstan 92. The upright portion 90a of the support member 90 is provided with an L-shaped locking piece 90b that extends in the right angle direction, and a cylindrical projection 90d is provided on the flat plate portion 90c that extends horizontally from above the upright portion 90a. It is installed protrudingly. Support member 90
A flat plate portion 90 extending horizontally from below the standing portion 90a of
A hook-shaped retaining portion 93 is formed at one end of e, and this retaining portion 93 is attached to a protrusion 94 erected on the head stand 85.
can be guaranteed.

The base portion 80 of the swing lever 79 has an upright portion 80a.

Flat plate parts g extending horizontally from both ends of the upright part
ob, 80C, and an L-shaped locking part 97 provided at the lower part of the upright part 80a.

These swing levers 79. The support member 90 is inserted into the insertion hole 150 of the swing lever 79. Flat plate portion 90e of support member 90
The pins 91 are sequentially inserted through the insertion holes 152 formed in the
The pin 91 is rotatably supported around the axis of the pin 91. Further, the left end of the head stand 85 is arranged on the right side of the pin 91.

Both ends of the pin 91 are fixed to each substrate 1, 101. The locking piece 90b provided on the upright portion 90a of the support member 90 is locked to the upright portion 80a of the swing lever 79, and
One end of a torsion spring 96 attached around the outer periphery of the pin 91 is locked to a locking portion 97 of the swing lever 79. The other end of the torsion spring 96 is fixed to the flat plate portion 90c of the support member 90. Therefore, the support member 90 and therefore the pinch roller 89 are biased clockwise, and the locking piece 90b is attached to the upright portion 80a of the swing lever 79.
Rotational movement of the support member 90 is prevented by being locked to the support member 90 .

A fast forward/rewind mechanism 100 is provided above the head stand 85. The fast forward/rewind mechanism 100 is a board 101
It is composed of a % fast forward lever 1021, a rewind lever 103, a slide lever 104 movable in relation to the levers 102 and 103, and the like. A fast-forwarding lever 102 is mounted on the substrate 101 so as to be movable in the cassette insertion direction G. The fast-forward lever 102 is biased by a spring 105 in a direction opposite to the cassette insertion direction G. Fast forward Shirebar 102
A rewind lever 103 is placed on top.

The rewind lever 103 is also movable in the cassette insertion direction G similarly to the fast forward lever IQ2.

A spring 106 biases the cassette in a direction opposite to the cassette insertion direction G. A slide lever 104 is mounted on the rewind lever 103, and a protrusion 1 provided on the lever 103
07 is inserted into the elongated hole 108 formed in the lever 104. Also, the slide lever 104
The protrusion 11O of the substrate 101 is inserted into the elongated hole 109 formed at the left end of the substrate 101. A spring support member 300 surrounds the fast forward υ lever 102 and the rewind lever 103.
is attached to the board 101, and the lever 102.10
3 has a gap with the support member 300 and can move forward and backward. The fast forward lever 102 is formed with a long hole 111 extending in the longitudinal direction of the substrate l, and the rewind lever 10
A similar elongated hole 112 is also formed in No. 3 so as to coincide with the elongated hole 111. Pins 113 erected on the substrate 1.degree. 1 are fitted into the elongated holes 111, 112. The slide lever 104 is biased in a direction opposite to the insertion direction G by a spring 114.

When the rewind lever 103 is pushed in, the slide lever 104 is guided by the pin 1°7 fitted into the elongated hole 108 and moves in the cassette insertion direction GKf5. When the fast-forwarding lever 102 is pushed in, the engaging piece 114 erected at the tip of the fast-forwarding lever comes into contact with the engaging portion 115 of the slide lever 104, so that as the fast-forwarding lever 102 moves, the slide lever 104 also move in the same direction.

To the left of the levers 102 and 103, there is a lever 102.10.
A trigger lever 115 is arranged to keep the levers 102 and 103 in a locked state when 3 is pressed.

This trigger lever 115 consists of an upper lever 116 and a lower lever 1.
It consists of 18. The upper lever 116 is the fast forward lever 10.
The arm 116a extends in the direction opposite to the arm 116a, and the arm 116b extends in the opposite direction to the arm 116a. Upper lever 11
The lower lever 118 provided directly below the arm portion 116a
It has approximately the same shape as . The upper lever 116 and the lower lever 118 are supported by a pin 122 inserted through the insertion holes 119, 120, 121 so as to be rotatable around the axis of the pin 122. As shown in FIG. 12, when the partially toothed gear 34 is rotated clockwise and the second cam 72 is rotated to push up the end of the trigger lever 115, the trigger lever 115 is rotated clockwise around the pin 122. rotated in the direction.

FIG. 17 is a simplified plan view showing the configuration related to the head stand 85, the fast-forward lever 102, and the rewind lever 103, and FIGS. 18 to 20 are the operations of the pinch roller 89 and the vertical movement of the head stand 85. It is a figure for explaining a state. Before inserting the cassette, the head stand 85
The arm portion 8 of the swing lever 79 is attached to the locking portion 87a of the engaging piece 87.
The swinging lever 79 is biased counterclockwise by the ejecting spring 83. Therefore, the head stand 85, which is biased downward in FIG. 17, is prevented from moving downward by a spring (not shown).

When the cassette is inserted, the partially toothed gear 34
is rotated clockwise, and the swing lever 79 swings clockwise around the pin 91. When the swinging lever 79 and therefore the arm section 81 swing, the end of the arm section 81 and the locking section 87a of the head stand 85 are unlocked, and the arm section 81
According to the displacement, the head stand 85 is also displaced downward in FIG. At this time, the upright portion 80 of the swing lever 79
rotates clockwise, so that the spring force of the screw υ spring 96 causes the support member 90. And the pinch roller 89 is also rotated clockwise. In this way, the swing lever 79
When the end of the arm 82 reaches the upper limit, the pinch roller 89 is pressed against the capstan 92. pinch roller 8
9 is pressed onto the capstan 921C through the tape, the tape is driven at a constant speed. During tape playing, the contact portion of the tape that contacts the pinch roller 89 and the head 88 always projects slightly downward. In this way, the tape is connected to the pinch roller 89 and the head 8.
Accurate regeneration is achieved by sufficiently pressing on B.

During fast forwarding, the fast forwarding bibber 102 is pushed to the left in FIG.
is separated from the capstan 92 and largely retreats upward, and the head stand 85 retreats to a predetermined position where the head 88 is inserted into the tape by a relatively small amount. To explain in more detail, the tip of the fast-forwarding lever 102 (the first
On the side of the bent portion 160 at the left end in FIG. When pushed to the left in the figure, the protrusion 90d provided on the support member 90 is guided into contact with the inclined surface, and as the lever 102 is displaced, the protrusion 90dl and therefore the pinch roller 89 move counterclockwise around the bin 91'. Rotated. When this pinch roller 89 is rotated, the hook-shaped portion 9 of the support member 90
The head stand 85 is retracted upward via a protrusion 94 erected on the head stand 85 which is engaged with the head stand 85 .

In this way, the pinch roller 89 is sufficiently separated from the capstan 92, and the head 88 is moved by the head stand 85 to a predetermined position where the amount of head insertion into the tape is small. Rewind lever 103 when rewinding
When pushed in by 5 degrees, the same operation as in the above-mentioned fast forwarding is performed, and the pinch roller 89 and head stand 85 are also moved in the same way.

When the cassette is ejected, as shown in the figure, when the swinging lever 79 is swung counterclockwise by the force of the ejecting spring 83, the arm 81 of the swiveling lever 79 is moved against the head stand 85. The locking portion 87a is pushed upward, so that the head stand 85 is retreated upward. At the same time, the support member 9
01. Therefore, the pinch roller 89 relies on the force of the spring 96.

It is rotated counterclockwise around the bin 91. In this way, the pinch roller 89 separates from the capstan 92,
And the head 8B separates from the tape. Therefore, the cassette can be ejected without any problem.

In this way, when fast forwarding or rewinding, the head 8B is inserted into the tape and the pinch roller 79 is moved back, and when ejecting the tape, the head 88 and pinch roller 89 are moved back. You can perform an operation to find the beginning of a song when going back.

tJA21 is a simplified plan view of the vicinity of the tip of the fast-forwarding lever 102, FIG. 22 is a front view of the trigger lever 115, and FIG. 23 is a diagram showing the operation of the trigger lever 115 when the fast-forwarding lever 102 is pushed in. It is a figure for explaining a state. A retaining portion 160 that engages with one end of the trigger lever 115 is provided at the tip of the fast-forwarding lever 102, and a horizontal direction (
A guide surface 166 that extends in the left-right direction in FIG. 21), a guide surface 167 that is connected to the guide surface 166 and is inclined diagonally downward to the right in FIG. Surface 168 and recess 1 continuous to guide surface 168
69 is formed. Guide surface 16 of fast-forward lever 102
A long hole 111 is formed above the substrate 1, into which a projection 113 on the substrate 1 is inserted. The upper lever 116 and lower lever 118 of the trigger lever 115 are engaged with the engaging portion 160 of the fast-forwarding lever 102, and the abutment surface 116a of the upper lever 116 is disposed below the trigger lever 115. Swing piece 1 of leaf switch 165 for
65a. This muting leaf switch 165 is a so-called muting switch that eliminates unpleasant sounds caused by contact between the tape and the head during fast forwarding or rewinding.
5a and a fixing piece 165b.

When the fast forward lever 1-02 is pushed in, the percentage shown in Figure 23 (1
), the upper lever 116 is guided by the guide surface 167 and moves downward, so that the swinging piece 165a comes into contact with the fixed piece 165b, and the leaf switch 165 becomes conductive.

When the fast-forwarding lever 102 is further pushed in from the state shown in FIG. 23, the upper lever 116 is guided by the guide surface 168 and fitted into the recess 169, as shown in FIG. The scissor 102 becomes locked. At this time, the lower lever 118 stops on the guide surface 168. Since the guide surface 168 is located below the guide surface 166, when the lower lever 118 is in contact with the guide surface 168.

The lower lever 118 has moved lower than before the fast-forwarding lever 102 was inserted, so the lower lever 118 has moved downward from the swing piece 1.
65a is pushed down to contact the fixed piece 165b, thereby maintaining the conductive state of the leaf switch 165.

In this manner, the muting leaf switch 165 can be made conductive during fast forwarding or rewinding, thereby eliminating unpleasant noises caused by contact between the head and the tape during the cue operation for two songs.

Figure 24 shows the slide lever 104 when playing a tape.
, 34% partially toothed gear. FIG. 25 is a plan view corresponding to FIG. 24 during fast forwarding or rewinding, and FIG. 26 is a plan view corresponding to FIG. 24 during fast forwarding or rewinding. It is a top view which expanded a part of figure.

As mentioned above, the rotational driving force from the motor 10 is applied to the pulley 1.
2% and gears 20.28 and 30.31 to rotate the partially toothed gear 34 gold clockwise. When the mesh between the partially toothed gear 34 and the gear 31 rotates to the position of the partially toothed portion 7o, the rotation prevention piece 78 of the electromagnetic hook 76 is engaged with the protrusion 74 provided on the lower surface of the partially toothed gear 34, The rotation of the partially toothed gear 34 is stopped, and thereafter the end of the partially partially toothed portion 70 and the gear 31 are rotating idly.

Tape performance is performed in this state. When the fast-forwarding spooler 102 is pushed in, the slide lever 104 moves upward in FIG. 25 as shown in FIG. 25. Further, as described above, the trigger lever 115 is locked with the fast-forwarding lever 1o2, and the pinch roller 89 is separated from the capstan 92. When the fast-forward operation is performed in such a state, when the head 88 detects an interval between songs on the tape, the coil 7
7 is instantaneously demagnetized. When the coil 77 is demagnetized, the electromagnetic hook 76 operates, and therefore the engagement between the rotation blocking piece 7B and the protrusion 74 is released, allowing the partially toothed gear 34 to rotate clockwise. As the partially toothed gear 34 rotates, the swinging lever 79 starts to swing counterclockwise by the spring force of the ejecting spring 83. Swing lever 7
After the lever 9 is slightly displaced, it comes into contact with the tip of the slide lever 104, and the swinging movement of the swinging lever 79 is blocked. This prevents the tape from being ejected.

In this state, as shown in FIG. 26, when the partially toothed gear 34 further rotates, the cam 72 moves toward the trigger lever 1
15 to the right. By displacing the trigger lever 115, the locked state with the fast-forward lever 102 is released, and the fast-forward lever 102 returns to its original state. At the same time, the pinch roller 89 is also pressed against the capstan via the tape, and the playing state is restored.

At this time, the partially toothed gear 34 is again prevented from rotating by the rotation blocking piece 78.

In this way, by slightly angularly displacing the cam 72 after detecting the song interval, the playing state can be returned to, so that even if the song interval is short, it is prevented from reaching the beginning or the beginning of the song.

FIG. 27 is a perspective view of the electromagnetic hook 76, and FIG.
; i@This is a rear view seen from the H side of Figure 27.

FIG. 29 is a bottom view seen from the ■ side of FIG. 27.

FIG. 30 is an exploded perspective view of FIG. 27. Referring to these drawings, an electromagnetic hook 76 is fixed to the substrate 1 with pins 191 and 192. The electromagnetic hook 76 is connected to the coil 7
7, a holding member 200 that holds the coil 77, and an armature 201 that is attached to the holding member 200 in close proximity to the end of the coil 77. Holding member 20
0Vi bottom plate portion 202 and side plate portions 2, 03, 204, and 205f extending perpendicularly to the bottom plate portion 202. The side plate portion 203 and the side plate portion 205 are parallel, and the side plate portion 204
is perpendicular to the side plate portions 203 and 205. A protrusion 206 is formed at the end of the side plate 205 and extends in the longitudinal direction, and the protrusion 206 is provided with an insertion hole 208 through which a rod-shaped spring 207 is inserted.

The armature 201 has an L-shaped horizontal section, and includes a base plate 209 facing the side plate 204 of the holding member 200, and a free end 21 extending perpendicularly from the base plate 209.
Including 0. A stepped portion 209a is formed in the substrate portion 209, and an insertion hole 211 through which the protruding portion 206 of the holding member 200 is inserted is provided in the stepped portion 209a.

After the protrusion 206 is inserted into the insertion hole 211, the rod-shaped spring 207 is inserted into the insertion hole 208 and fixed, so that the armature 201 can swing freely around the protrusion 206 in the direction of arrow J.

At the lower end of the free end portion 210, a locking piece 212 bent inward and a rotation blocking piece 78 bent outward are sequentially provided from the front to the rear in FIG. It is being One end of the spring 213 is connected to the locking piece 212, and the other end is connected to the locking piece 214 of the bottom plate portion 202.

When the coil 77 is excited, the base plate 2 of the armature 201
09 comes into contact with the end 77a of the coil 77, so that the armature 201 is swung clockwise against the spring force of the spring 213. When the coil 77 is demagnetized, the spring force of the spring 213 causes the armature 201 to swing counterclockwise.

FIG. 31 is a simplified plan view showing the configuration related to the missing gear 34, FIG. 32 is a partially enlarged plan view of FIG. 31, and FIG. 33 is a cross-sectional view of FIG. 32. It is a sectional view seen from line -K. A leaf spring 230 is disposed below the lateral gear 34. Further, below the lantern 34 and diagonally above the right side of the leaf spring 230 in FIG.
A switch 231 is provided to stop the rotational drive of the motor. When ejecting from the playing state, coil 7
7 is demagnetized, so that the armature 201 and therefore the rotation blocking piece 78 are displaced in a direction away from the partially toothed gear 34, and the partially toothed gear 34 is allowed to rotate. The swing lever 79 is swung once counterclockwise in accordance with the rotation of the partially toothed gear 34, and then the swing lever 79 is wound up again by the partially toothed gear 34.

When the protrusion 73 provided on the lower surface of the partially toothed gear 34 slightly exceeds the locking protrusion 232 provided on the leaf spring 230, the tip of this protrusion 73 touches the leaf switch 231.
contact with the swinging piece 231a.

Therefore, the swinging piece 231a and the fixed piece 231b are separated,
Rotation of motor 10 is stopped. This state is the state before the cassette is inserted.

When the rotation of the motor 10 is stopped, the rotation of the partially toothed gear 34 is stopped, and therefore the swing lever 79 is biased counterclockwise by the spring force of the ejecting spring 83.

However, the protrusion 73 is in contact with the locking protrusion 232, thus preventing the partially toothed gear 34 from rotating in the opposite direction.

FIG. 34 is a perspective view of the leaf spring 230, FIG. 35 is a front view of the leaf spring 230, and FIG. 36 is a right side view thereof. The leaf spring 230 has a flat plate portion 230a and a flat plate portion 23.
A vertical portion 230b that continues below 0a, and a vertical portion 230b.
and a base portion 230c extending horizontally from the base portion 230c. Flat plate part 23
A locking protrusion 232 is provided at Oa. Flat plate part 230a
substantially triangular bent portions 230d and 230e at the right end of the
is formed. Since the leaf spring 230 is disposed along the tangential direction of the circular locus of the protrusion 73, the flat plate portion 230a
By having the bent portions 230d and 230ee at the right end of the flat plate portion 230a, the protrusion 73 and the right end of the flat plate portion 230a are prevented from coming into contact with each other.

Note that the flat plate portion 230a is biased upward.

Therefore, when the protrusion 73 exceeds the locking protrusion 232 and then starts reverse rotation, the protrusion 73 and the locking protrusion 232 are reliably connected to each other.
2 engages with each other, and the partially toothed gear 34 is prevented from rotating in the opposite direction.

Effects As described above, according to the present invention, since the first cam operates the trigger lever and the second cam operates the swing lever, the time from detecting one song to returning to the playing state is shorter than before. can also be shortened.

[Brief explanation of the drawing]

1 is a simplified plan view of a cassette tape recorder and/or player in which the present invention is implemented; FIG. 2 is a front view seen from the arrow A side in FIG. 1; and FIG. Fig. 4 is a side view seen from the arrow B side of Fig. 1, Fig. 5 is a bottom view, Fig. 6 is a side view seen from the arrow C side of Fig. jg1. 7 is a simplified plan view showing the internal structure of Figure 1, and Figure 8 is a perspective view of the vicinity of the tip of the support member 3. Figure 9 is an enlarged perspective view of a portion of Figure 8. Figure, 1st
Figure 0 is a side view corresponding to Figure 3 with the cassette inserted, Figure 11 is a perspective view of the vicinity of the upper part in Figure 1, and Figure 12 is a perspective view from the arrow E side of Figure 11. figure,
13 is a plan view of the partially toothed gear 34, FIG. 14 is a side view seen from the arrow F side in FIG. 13, FIG. 15 is a perspective view showing the structure related to the head stand 85, and FIG. 16 is a FIG. 15 is an exploded perspective view of FIG. 15; FIG. 17 is a simplified plan view showing the configuration related to the head stand 85 and the levers 102, 103.
FIG. 0 is a diagram for explaining the operating state of the pinch roller 89 and the head stand 85, and FIG. 21 is a diagram for explaining the operating state of the fast-forward lever 102, the trigger lever 115, and the trigger lever 115 when the feed lever 102 is pushed in. Figure 24 shows slide lever 1 when playing a tape.
04, a simplified plan view showing the configuration related to the partially toothed gear and the trigger lever 115, FIG. 25 is a plan view corresponding to FIG. 24 during fast forwarding or rewinding, and FIG. 26 is a plan view corresponding to FIG. A partially enlarged plan view. FIG. 27 is a perspective view of the electromagnetic hook 76, FIG. 28 is a rear view as seen from the H side in FIG. 27, FIG. 29 is a bottom view as seen from the ■ side in FIG. 27, and FIG. 27 is an exploded perspective view, FIG. 31 is a simplified plan view showing the configuration related to the partially toothed gear 34, and FIG. 32 is an enlarged plan view of a portion of FIG. 31. 34 is a perspective view of the leaf spring 230, FIG. 35 is a front view of the leaf spring 230, and FIG. 36 is a right side view thereof. 34... Partial tooth gear, 71... First cam, 72...
Second cam, 79... Swing lever, 115... Torika lever. 116... Upper lever, 118... Lower lever, 102
...Fast forward Shirebar, 103... Rewind lever Agent Patent attorney Kei Nishi Part 19 Fig. 20 Fig. 21 Fig. 22 Fig. 23 Fig. 24 Fig. 27 Fig. 28 Fig. 29 Figure 31 Figure 32 Figure 33 Figure 35 Figure 36

Claims (1)

[Claims] A first cam and a second cam are provided on the upper surface of the partially toothed gear. After detecting a song gap while fast forwarding or rewinding. A song cue mechanism characterized in that the first cam operates a trigger lever, and the second cam operates a swing lever.