JPS6058533B2 - Tape recorder drive mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive mechanism for a tape recorder in which a cam plate is used to press a pinch roller to a capstan and transmit rotational force to a take-up reel stand. A tape recorder drive mechanism that energizes the solenoid to unlock the cam plate, rotates the cam plate with the driving force of the motor, presses the pinch roller against the capstan, and rotates the take-up table. is to provide.

Next, embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a chassis, and 2 a head stand that moves back and forth while being guided by a guide pin 1a and a stopper pin lb (this pin lb also serves to position the cassette) on the chassis 1, and an erasing head 2a). Recording/playback head 2b
is installed. The head stand has two guide elongated holes 2c on the upper and lower sides of the left side, into which the pin 1a is inserted.
A stopper elongated hole 2d into which the pin lb is inserted is formed in the center, and a lock elongated hole 2e into which an upright piece 7c of the head stand lock plate 7 is inserted, which will be described later, is formed in the right side. Further, lc is a pin for positioning the cassette. Reference numeral 3 denotes a pinch roller unit equipped with a pinch roller 3a, which is rotatably supported on a support pin LD implanted in the chassis 1, and is supported by a spring 3b to connect the pinch roller 3a to the side of a capstan 4a, which will be described later. Encourage. ing.

Further, the unit 3 is formed with a protruding piece 3c that comes into contact with the head stand 2, and an extension piece 3d that comes into contact with a protruding piece 20a of a set plate 20, which will be described later. Reference numeral 4 denotes a first flywheel which is pivotally supported by a bearing (not shown) formed on the chassis 1 and a presser plate 5 (Fig. 2) attached to the rear surface of the chassis 1, and its rotating shaft is connected to the capstan. It has become 4a.

6 is a second flywheel that is pivotally supported by a bearing (not shown) formed in the chassis 1; 7 is a second flywheel that is supported by a pin 1e installed on the back surface of the chassis 1, and is driven upward by a spring 7a; The head stand lock plate (Figs. 3 and 4) is biased by a spring force, so that the engaging part 7b is engaged with the elongated hole 1f bored in the chassis 1, and rotated about this as a fulcrum. It's summery.

Also, this head stand lock plate 7 has a long hole 1g in the chassis 1.
A more protruding upright piece 7c is formed and the head stand 2
an engaging claw 7d that is engaged with a lock elongated hole 2e bored in the lock hole 2e;
A protruding piece 7e protruding from the lock elongated hole 2e is formed. Now, in FIG. 4, when the cassette 8 is set, the protruding piece 7e is moved by the cassette 8 to the spring 7.
Since it is pushed down against the spring force of a, the engaging claw 7d disengages from the elongated hole 2e of the head stand 2, and the head stand 2 is moved forward by a spring (not shown), that is, the head stand 2 is moved forward by a spring (not shown). It moves to the right in Figures 3 and 4, and upward in Figure 1.

Reference numeral 9 denotes a supply reel stand rotatably supported by the chassis 1, and a gear 9a is formed on the outer periphery.

Reference numeral 10 denotes a take-up reel stand supported by a shaft (not shown) installed in the receiving plate 5, and as shown in FIG. A belt groove 10e is formed in the lower part of the rubber roller 10b, into which a belt 12 wound between the rubber roller 10b and a counter 11 fixed above the chassis 1 is fitted.

This take-up reel stand 10 is fitted into a bearing 13 that is rotatably supported by the shaft of the receiving plate 5, and this bearing 13 and the take-up reel stand 1
The first arm 14 and the second arm 15 for end detection are connected between the
is inserted. A projection 14a formed on the first arm 14 is fitted into a long hole 15a formed in the second arm 15. Further, a resilient spring 16 is interposed between the first and second arms 14 and 15. Now, when the take-up reel stand 10 rotates, the first arm 14 is moved toward the take-up reel stand 10 side by the resilient spring 16, and the second arm 15 is moved toward the bearing 1 side.
Since the first and second arms 14 and 15 are pressed against each other, a rotational force in the same rotational direction is applied to the first and second arms 14 and 15.

Note that the first arm 14 is formed with a bifurcated piece 14b that engages with a protrusion 32a of an auto-stretch lever 32, which will be described later. 17 is a take-up unit, one end of which lever 17a is pivotally supported by the chassis 1, and a take-up pulley 7b is pivotally supported approximately in the center.

The rotating shaft 17c of the take-up pulley 1J17b projects from the lever 17a and can come into sliding contact with the rubber roller 10b of the take-up reel stand 10 described above. Further, an engagement protrusion 17d is formed at the tip of the take-up lever 17a to be brought into contact with a contact front edge 20c of a set plate 20, which will be described later. The lever 17a is rotated clockwise. That is, the engaging protrusion 17d is set on the set plate 2.
0 toward the abutting front edge 20c side. 18 is a motor, and the pulley 18a takes up the pulley 1 river 7.
b1 A belt 19 is wound around the second flywheel 6 and the first flywheel 4.

Reference numeral 20 denotes a set plate slidably provided on the chassis 1, and a projecting piece 20a that comes into contact with the extension piece 3d of the pinch roller unit 3 described above when the cassette is installed.
, a notch 20b into which one end of the lever arm 40 (described later) is inserted, a contact front edge 20c which is always in contact with the engagement protrusion 17d of the take-up unit 17, and a cam plate 29c (described later), which is in constant contact. abutting rear edge 20d
is formed.

Further, a shaft 20e is implanted at the tip of the set plate 20, and a biasing arm 22 is rotatably supported on the shaft 20e. The spring 23 is stretched between one piece of the biasing arm 22 and the left protruding piece of the set plate 20, and the other piece of the biasing arm 22 is always in contact with the cam plate 29c.
Note that this set plate 20 is always biased in the forward direction by a spring 21. Reference numeral 24 denotes a control lever supported by a shaft installed in the chassis 1 that supports a first gear 25, which will be described later.
2 is rotated counterclockwise, it contacts the hanging piece 22a and is rotated clockwise, and at this time, the other end contacts the auto stop lever 32 and rotates the lever 32 counterclockwise. .

25 is a first gear bearing on the chassis 1, and as shown in the back view of FIG. 9, an eccentric circular groove 25a is formed on the lower surface of the first gear, and a cam base 25b is formed approximately in the center of the eccentric circular groove 25a.
and a protrusion 25c are formed.

The protrusion 25c is connected to the eccentric cam base 25b and the eccentric circular groove 25a.
It is formed so as to be located concentrically with the middle of the narrowest groove portion 25a1 formed by the outer peripheral wall of the groove portion 25a1. A second gear 26 is fixed to a rotating shaft 27a of a pulley 27 bearing on the chassis 1, and is meshed with the first gear 25.

A belt 28 is wound around the pulley 1J27 and a pulley 4b provided on the rotating shaft of the first flywheel 4. Therefore, when the first flywheel 4 is rotated, the first gear 25 is rotated via the second gear 26. A third gear 29 is pivotally supported by the chassis 1 and is meshed with the second gear 26.
The gear has two notches 29a that do not mesh with the second gear 26.

Further, on the upper surface of the third gear 29, cam teeth 29b and a cam plate 29c are integrally formed. 30 is the above cam tooth 2
This is a lock arm pivotally supported by the chassis 1 that is engaged with the chassis 1 and released from the engagement when the solenoid 31 is energized and attracted.

Reference numeral 32 designates an auto-stop lever whose one end is pivotally connected to a stop lever 45, which will be described later, and a protrusion 32a provided on the lower surface of the auto-stop lever approximately in the center thereof is engaged with the bifurcated piece 14b of the first arm 14.

Further, a crescent-shaped engagement protrusion 32b formed at the tip faces into the eccentric circular groove 25a of the first gear 25. Note that a shoulder portion 32c that is engaged with the release protrusion 25d of the first gear 25 is formed at the tip of the auto-stop lever 32. When the take-up reel stand 10 rotates in the tape winding direction, that is, in the direction of the arrow in FIG.
Since the first arm 14 is pressed against the take-up reel stand 10 side by 6, a rotational force in the direction of the arrow is also applied to the first arm 14.

Therefore, the auto-stop lever 32 whose protrusion 32a is engaged with the bifurcated piece 14b is given a clockwise rotational force. As a result, the engagement protrusion 32b is brought into a state along the outer circumferential wall of the eccentric circular groove 25a of the first gear 25. Furthermore, when the take-up reel stand 10 supplies tape, that is, rotates in the opposite direction to the arrow, the first arm 14 is given a rotational force in the opposite direction, so the auto-stop lever 32 rotates in the opposite direction. A force is applied, and therefore, the engagement protrusion 32b is brought into a state along the outer circumferential wall of the cam base 25b. In any of the above cases, when the tape stops running and the take-up reel stand 10 stops rotating, the first arm 14 becomes free and the biasing force applied to the auto-stop lever 32 also disappears. . Accordingly, after the first gear 25 rotates and the engagement protrusion 32b passes through the narrowest groove portion 25a1, it is positioned on its trajectory and is engaged with the protrusion 25c on the trajectory. As a result, after the auto-stop lever 32 is pulled up, the shoulder portion 32c comes into contact with the release protrusion 25d of the first gear 25, and the engagement between the engagement protrusion 32b and the protrusion 25c is released. Reference numeral 33 designates a play arm whose substantially center portion is pivotally supported by the chassis 1, and a roller 33a is provided at one end, which corresponds to the cam plate 29c of the third gear 29 described above.

Further, a spring 33c is stretched between the other end of the play arm 33 and the chassis 1, and applies rotational force to the play arm 33 in a counterclockwise direction. Therefore, the roller 33a is always in contact with the cam plate 29c. Further, the other end of the play arm 33 corresponds to a control rod 2f projecting from the lower surface of the head stand 2. When the cassette 8 is mounted, the cassette stand 2 moves forward for the reasons described above, and the control rod 2f comes into contact with the play arm 33 and stops.

This state is expected. state. When a play lever 44, which will be described later, is pressed, the solenoid 31 is energized and the lock arm 30 is attracted. As a result, the engagement between the lock arm 30 and the cam teeth 29b is released. At this time, since the cam plate 29c is eccentric, the cam plate 29c is
0 (always pulled toward this side (downward in Figures 1, 7, and 8) by the spring 21) abutting rear edge 20d
It is rotated slightly by being pressed. As a result, the notch 2 of the third gear 29, which was in a position facing the second gear 26,
9a is shifted, and therefore the third gear 29 and the second gear 26 are meshed, and the third gear 29 is rotated until the next notch 29a faces the second gear 26. When the gear 29 is rotated, the roller 33a of the play arm 33 comes into contact with the large diameter portion of the cam plate 29c, and the play arm 33 is rotated clockwise, so that the head stand 2 moves further forward. and becomes the playback or recording position. From this state, when the stop lever 45 is pressed and the solenoid 31 is energized again, the engagement between the lock arm 30 and the cam teeth 29b is released. At this time, the eccentric cam plate 29c is rotated by being pressed by the roller 33a of the play arm 33 (which is always urged counterclockwise). This causes the third gear 29
is meshed with the second gear 26, and the third gear 29 is rotated. Therefore, the roller 33a comes into contact with the small diameter portion of the cam plate 29c, and the play arm 33 is rotated counterclockwise to return the head stand 2 to the waiting position. 34 is chassis 1
A gear 34a that selectively meshes with the gear 9a of the supply reel stand 9 or the gear 10a of the take-up reel stand 10 is provided on its upper surface. The gear 34a is fitted onto the upper end of a rotating shaft that is pivotally supported by the rapid feed unit 34, and the lower end of the rotating shaft is selectively brought into contact with the first and second flywheels 4, 6. A rubber roller 34b is fitted. Further, the fast-forwarding unit 34 has a protrusion 34c formed on the side thereof that comes into contact with a fast-forwarding arm 35, which will be described later, and a protrusion 34d that engages with a slide lever 38, which will be described later.
Reference numeral 35 designates a fast-forwarding arm pivotally supported at the tip of a fast-forwarding lever 47, which will be described later, and springs 36 and 37 are stretched between one end of the fast-forwarding arm and the chassis 1 and between the other end of the fast-forwarding arm and the fast-forwarding unit 34. ing.

Also, the fast forward arm 35 has a rewind lever 48 which will be described later.
An upright piece 35a that comes into contact with the tip of the fast forward lever 47 is formed, and a hanging piece 35b that comes into contact with the bent portion 47c of the fast forward lever 47 is formed. Reference numeral 38 is a slide lever having one end 38a guided to a guide pin implanted in the chassis 1, and the other end guide piece 38b guided to a groove (not shown) drilled in the chassis 1, and the fast forward unit 34 protrusions 34d
A step portion 38c that comes into contact with the play arm 33 and a projecting piece 38d that comes into contact with the hanging piece 33b of the play arm 33 are formed.

Note that a spring force is always applied to the slide lever 38 toward the front (downward in the figure) by a spring 39. Then, when the fast-forward lever 47 is pushed, the fast-forward arm 35
The hanging piece 35b is the bent part 47c of the fast-forward lever 47.
Move forward while in contact with the

As a result, the fast-forward arm 35 comes into contact with the protrusion 34c of the fast-forward unit 34, and the fast-forward unit 34 is rotated clockwise. Therefore, the rubber roller 34b comes into contact with the first flywheel 4, and the gear 34a meshes with the gear 10a of the take-up reel stand 10, so that the take-up reel stand rotates at high speed and rapidly feeds the tape. On the other hand, when the rewind lever 48 is pushed, the upright piece 35a of the fast forward arm 35 comes into contact with the stepped portion 48c of the rewind lever 48, and is rotated clockwise against the spring force of the spring 36. As a result, the rapid forwarding unit 34 is rotated counterclockwise by the spring force of the spring 37. Therefore, the rubber roller 34b comes into contact with the second flywheel 6, and the gear 34a meshes with the gear 9a of the supply reel stand 9, so that the supply reel stand 9 rotates at high speed and rewinds the tape. Reference numeral 40 is a lever arm whose approximately center is pivotally supported by a support pin 1d of the chassis 1, one end is pivotally supported by a play lever 44 which will be described later, and the other end is supported by a set plate 2.
It faces into the notch 20b of 0.

Note that the lever arm 40 is constantly applied with a counterclockwise rotational force by a spring 41. Reference numeral 42 designates a pause lever guided by a guide groove 42a, and a cutout groove 42b is formed at the tip to avoid the above-mentioned support pin 1d.

The pause lever 42 is engaged with and detachable from a pause lever lock plate 43 that is embedded in the chassis 1 and is pivotally supported by a pin that passes through the groove 20f of the set plate 20. That is, once the pause lever 42 is pressed, the protrusion 42c engages with the lock plate 43 and maintains the pressed state.
If the lock plate 43 is pressed again, the engagement between the lock plate 43 and the protrusion 42c is released and the lock plate returns to its original position. 44 is a play lever having two lock pieces 44a, 44a'', and 45 is a stop lever that has a lock piece 45a and is guided by a guide groove 45b. ) is given a spring force.

47 has a lock piece 47a and is guided by a guide groove 47b, a fast-forwarding lever; 48 a lock piece 48a;
The lever 48 has a rewinding lever guided by a guide groove 48b, and the tip of the lever 48 and the tip of the fast forward lever 47 are in contact with an auxiliary lever 49.

Spring force is always applied to the fast forward and rewind levers 47, 48 and the auxiliary lever 49 toward the front (downward in the figure) by springs 50 to 52. 5
3 is a recording lever that has a lock piece 53a and is guided by a guide groove 53b, and a spring force is always applied toward the front (downward in the figure) by a spring 54.

Although not shown, each lever 44, 45, 47,
48 and 53 are supported between the chassis 1 and a guide plate (not shown) behind each lock piece, and therefore the other levers except the play lever 44 are supported at two places: the guide groove and the guide plate. It is designed to move in a straight line. Reference numeral 56 denotes a song interval detection lever pivotally supported by a pin 11 implanted in a mounting piece 1h bent downward on the side surface of the chassis 1;
is a locking plate pivotally supported by a pin 1j implanted in the mounting piece 1h, and is rotated clockwise (the first
A rotational force is applied to (Figure 2). and lock plate 5
One end of the lock plate 7 is engaged with a protruding piece 56a of the song interval detection lever 56, and the other end is formed with a claw 57a that engages with one end 59a of a control plate 59 that controls the rotation of a third lock plate 76, which will be described later. There is. Further, the lower tip 56b of the song interval detection lever 56 is in contact with one end 59a of the control plate 59. This control board 59
A spring force is applied by the helical spring 6' in a clockwise direction (FIG. 19), that is, one end is pressed against the lower tip 56b of the song interval detection lever 56, and the other end is pressed against the third lock plate 76. being touched. When the song interval detection lever 56 is rotated [clockwise in FIG. 12 (double-dashed line)] in FIG.
counterclockwise against the spring force of the winding spring 6 (Fig. 19).
is rotated to

At the same time, since the protrusion 56a of the lock plate 57 moves, a clockwise rotational force is applied by the spring force of the coiled spring 58 (FIG. 19). Therefore, the claw 5 of the lock plate 57
7a is initially in contact with the control plate 59, but the control plate 59
As the control plate 59 rotates, one end of the control plate 59 is positioned above the pawl 57a, so that the spring force of the coil spring 58 causes the lock plate 5 to be
The pawl 57a of No. 7 and the control plate 59 are engaged and locked.
On the other hand, to release the lock, by returning the song interval detection lever 56, the protrusion 56a rotates the lock plate 57 counterclockwise against the spring force of the coiled spring 58, so that the claw 57a and the control plate 59 are will be removed. Reference numeral 60 denotes an eject lever that is pivotally supported by a pin 11 planted in a mounting piece 1k bent downward on the side surface of the chassis 1, and 61 is pivotally supported by a pin 1m that is also planted in a mounting piece 1k. When using the sub-edge lever 60 as a sub-edge The lever 61 is also rotated to the right by contacting the protruding piece 61a of the electric lever 61 against the spring force of the coiled spring 63.

As a result of this rightward rotation, the engaging rod 64a of the lid 64 covering the cassette portion, which had been engaged with the hook portion 61b, is disengaged.
Therefore, the lid 64 is opened. Also, Ejiktorever 6
0, the lever 60 comes into contact with an auxiliary plate 65 attached to the head stand 2, moves the auxiliary plate 65 to the right, and returns the head stand 2 to its initial position. As a result, the protruding piece 7e of the head stand locking plate 7 further protrudes from the lock elongated hole 2e of the head stand 2, and by the operation of one end of the protruding piece 7e, the engaging claw 7d75 is engaged with the button elongated hole 2e, and the head stand 2
Lock 1 in the initial position. Reference numeral 66 denotes an auto-repeat lever that is pivotally supported by a pin 10 planted in a mounting piece 1n bent downward on the side surface of the chassis 1, and 67 is pivotally supported by a pin 1p that is also planted in the mounting piece 1n. A spring 68 is stretched between the auto repeat lever 66 and the repeat lock plate 67, so that the protruding piece 66a of the auto repeat lever 66 and the bent piece 67a of the repeat lock plate 67 are always in contact with each other. It acts like a contact.

Reference numeral 69 is a repeat slide lever that is interposed between the shear shift 1 and the head stand 2 and is movable in the front-rear direction (left-right direction in FIGS. 13 to 15). ) is applied with a spring force.

A hanging piece 69a is formed on the right side of this repeat slide lever 68, and a lock rod 69b is implanted in this hanging piece 69a. When the auto repeat lever 66 is pushed forward (to the left in the figure), the lever 66 comes into contact with the protrusion 69c of the repeat slide lever 69, moving the lever 69 to the left. Furthermore, when the auto repeat lever 66 rotates, the repeat lock plate 67 is also rotated in the same direction by the spring 68, so that the lock rod 69b is engaged with the engagement recess 67b of the repeat lock plate 67, and the repeat slide lever 69 is held in a moving state. On the other hand, when the auto-repeat lever 66 is returned to the rear (to the right in FIG. 13), the protruding piece 66a pushes the bent piece 67a, so the repeat lock plate 67 is rotated in the same direction as the auto-repeat lever 66. The engagement recess 67b is disengaged from the lock rod 69b. As a result, the repeat slide lever 69 is moved to the right by the spring 70 and returned to its original position. In FIG. 16, reference numeral 71 denotes a substantially F-shaped reel stand stop plate whose one end is pivotally supported on the chassis 1, and the other end is provided with a pin 71a that comes into contact with the extension piece 3d of the pinch roller unit 3 described above. .

A spring 72 is tensioned between this pin 71a and the chassis 1, and the pin 71a is always held on the extension piece 3.
It acts so as to come into contact with d. Furthermore, a tooth portion 71b that can mesh with the gear 10a of the take-up reel stand 10 is formed at the top of the reel stand stop plate 71. Therefore, when the ejector lever 60 is operated now, the head stand 2 is moved backward, and the pinch roller unit 3 is rotated clockwise, so that the pin 71a is pushed by the extension piece 3d of the unit 3. Therefore, the teeth 71b of the reel stand stop plate 71 stop the take-up reel stand 10.
The take-up reel stand 10 is meshed with the gear 10a, and the rotation of the take-up reel stand 10 is stopped. In addition, if you operate the Execute Lever 60, the winding! As another means for forcibly stopping the reel stand 10, the methods shown in FIGS. 17 and 18 can also be considered.

That is, a substantially dogleg-shaped reel stand stop plate 73 is pivotally supported at the center by the above-mentioned support pin 1d, one end is always in contact with the pin 2g of the head stand 2, and the other end is connected to the take-up reel stand. It corresponds to 10. Therefore, the engine lever 60
When the head stand 2 is moved backward by operating the pin 2g, the reel stand stop plate 73 is rotated counterclockwise, and its tip is pressed against the gear 10a of the take-up reel stand 10. This causes the take-up reel stand 10 to stop rotating. As another embodiment, as shown in FIG. 18, a part of the head stand lock plate 7 is extended to form a stop piece 7f, and an engagement projection 7 is formed at the tip of the stop piece 7f.
g, and the take-up reel stand 10 is provided with a plurality of vertical holes 10d.

As a result, by operating the ejector lever 60, the cassette 8
is removed and the head stand reel plate 7 is returned to its original state by the spring 7a, the engagement protrusion 7g of the stop piece 7f is pressed against the back surface of the take-up reel stand 10, and finally the vertical hole 10d
inserted inside. Therefore, the rotation of the take-up reel stand 10 is stopped. In FIGS. 19 to 21, 74, 75, and 76 are first to third lock plates that are each pivotally supported by a shaft 77 that is pivotally connected to the chassis 1, and each is held in a horizontal state by a coil spring (not shown). are doing.

The first lock plate 74 has lock pieces 47a, 48a, and 53a formed on the fast forward lever 47, the rewind lever 48, and the recording lever 53, and the second lock plate 75 has lock pieces 47a, 48a, and 53a formed on the fast forward lever 47, the rewind lever 48, and the recording lever 53. One of each lock piece 45a and 44a formed on the lever 44 corresponds to each other,
Further, the third lock plate 76 corresponds to another lock piece 44a'' formed on the play lever 44, respectively.
Similarly, a stepped portion 75a is formed at 4a in correspondence with the stepped portion 76a of the third lock plate 76. Therefore, the first lock plate 7
4 is lowered by itself, but when the second lock plate 75 is lowered, it lowers the first lock plate 74 and also lowers the third lock plate 76.

However, the stepped portions 75a and 7 of the second and third lock plates 75 and 76
Since a gap is formed in 6a from the beginning, the third lock plate 76 is lowered midway through the lowering of the second lock plate 75. Next, the shapes of each lock plate and each corresponding lock piece will be explained with reference to the upper diagram of 21A.

The third locking plate 76 has a hook portion 76b formed by a rising inclined surface 76b1 and a vertical surface 76b7 connected thereto, and the locking piece 44a'' of the play lever 44 is in sliding contact with the inclined surface 76b. The third locking plate 76 is lowered and has a hook portion 44a1'' that is engaged with the vertical surface 76b2 after passing the inclined surface 76b1.

The second lock plate 75 has a descending amount control portion 75b formed by an ascending inclined surface 75b1, a steeply descending inclined surface 75■ connected thereto, a gently descending inclined surface 75b3, and a vertical surface 75b4 connected thereto. Further, the lock piece 44a of the play lever 44 is formed with a protrusion 44a1 that is not engaged with the lowering amount control portion 75b. The third lock plate 76 is also lowered by the lowering amount of the second lock plate 75 when the protrusion 44a1 of the lock piece 44a passes the top of the lowering amount control section 75b. Further, the second lock plate 75 is formed with another lowering amount control section 75c. That is, the rising slope 75
C1, and a descending amount control portion 75c formed by a descending slope surface 75C2 and a vertical surface 75C3 connected thereto,
The height of the top is the same as the height to the top of the other descending amount control section 75b. The lock release piece 45a of the stop lever 45 is formed with a protrusion 45a1 that is not engaged with the lowering amount control section 75c. And unlock piece 4
5a passes through the top, the first lock plate 74
Then, the third lock plate 76 also lowers and, if locked, is released. The first lock plate 74 corresponds to the lock pieces 47a and 48a of the fast forward lever 47 and the rewind lever 48,
An ascending slope 74b1 and a descending slope 74b connected thereto
2 and a vertical surface 74■, and lock pieces 47a and 48a of the fast forward lever 47 and the rewind lever 48 are in sliding contact with the upwardly inclined surface 74b1 and the downwardly inclined surface 74b2. It has hook portions 47a1 and 48a1 that are engaged with the vertical surface 74b3. Also, the first lock plate 74
, the inclined surface 74C1 and the vertical surface 74 connected thereto.
The lock piece 53a of the recording lever 53 has a hook portion 53a1 that slides on the inclined surface 74C and is engaged with the vertical surface 74C2.
In FIGS. 8 and 19, reference numeral 77 denotes a switch control slide lever, which is constantly moved to the right by a spring 78.

This slide lever 77 has a play lever 44.
Lock piece 44a1 of fast-forward lever 47 lock piece 47a
A sloped portion 77a is provided at a portion corresponding to the lock piece 48a of the first rewind lever 48 and the lock piece 53a of the recording lever 53, and no matter which lever is pressed, the slide lever 77 is moved by the spring force of the spring 78. Move to the side that resisted. Note that the slide lever 77 has an inclined surface 77a.
A known recording lever blocking plate (not shown) is provided opposite to the recording lever 53 to prevent operation of the recording lever 53 when other operating levers are being operated. FIG. 22 shows a circuit diagram, where S1 is a power switch, S2 is a timer switch that is normally closed when the timer is not operated, and remains open until the set time is reached when the timer is operated, and S3 is a switch control slide lever 77. S4 is a switch that is closed when it slides, S4 is a switch that is opened when the auxiliary lever 49 is moved by operating the fast forward lever 47 and rewind lever 48, S5 is a switch that is closed when the second lock plate 75 is lowered, and S6 is a switch that is closed when the play arm 33 is moved. S7 is a switch that is opened when the slide lever 38 slides due to the rotation of , S7 is a switch that is closed when the repeat slide lever 69 is slid, S8 is a switch that is closed when the stop lever 45 is operated, and S9 is a switch that is closed when the stop lever 45 is operated. A switch that is closed when the lever 38 slides, S
IO is a switch that is closed when the recording lever 53 is operated, and Sll is a switch that is closed when the auxiliary lever 49 is moved.

, Sl3 is a remote control switch not shown in the mechanism diagram in the figure, Sl2 is a switch that closes when performing a play operation, and Sl3 is a switch that closes when performing a stop operation.
SL, is a memory switch not shown in the mechanism diagram, S
15 is a counter switch that is closed when the count of the counter 11 reaches 999. Ps is a switch that is closed when the song interval detection lever 56 is operated, MS is a circuit for detecting a song interval, and A is an amplifier. Note that 18 and 31 are the above-mentioned motor and solenoid. Next, the operation will be explained based on the above configuration.

Playing operation First, when the cassette 8 is placed on the head stand 2,
Since the protruding piece 7e of the lock plate 7 is pressed downward, the engagement claw 7d and the lock elongated hole 2e of the head stand 2 are disengaged. Therefore, the head stand 2 has a control rod 2f provided on its lower surface.
moves forward until it contacts the play arm 33. In this state, the heads 2a and 2b of the head stand 2 are slightly inserted into the window of the cassette 8. On the other hand, when the head stand 2 moves forward, the protruding piece 3c of the pinch roller unit 3 is disengaged, so the unit 3 is rotated by the spring 3b, and the extension piece 3d comes into contact with the protruding piece 20a of the set plate 20.
This causes the unit 3 to stop.

At this time, the pinch roller 3a and the capstan 4a are not in contact with each other (FIG. 23). When the play lever 44 is pushed in this state, the hook portion 44a1'' of the lock piece 44a'' is engaged with the hook portion 76b of the third lock plate 76 (FIG. 21A).

Further, since the lock piece 44a pushes down the second lock plate 75, the switch S5 located on the lower surface thereof is closed, and the slide lever 77 is further moved by the lock piece 44a, and the switch S3 is closed. Therefore, the power switch S1
If the timer switch S2 is closed, the motor 18 is energized. Further, since the switches S4 and S6 are normally closed contacts, the solenoid 31 is energized.
When the solenoid 31 is energized, the lock arm 30 is attracted and is unlocked from the cam teeth 29b. Then, the cam plate 29c is slightly rotated by the set plate 20, and the third gear 29 meshes with the second gear 26. Here, since the motor 18 is rotating, the first flywheel 4 is being rotated by the belt 19. Therefore, the pulley 27 is rotated via the belt 28, and the second gear 26 is rotated, so that the third gear 29 is rotated approximately 180 degrees. 3rd gear 2
9, the large-diameter portion of the cam plate 29c comes into contact with the roller 33a of the play arm 33, and the play arm 33 rotates and separates from the control rod 2f of the head stand 2, so that the head The table 2 moves further forward until the stopper elongated hole 2d contacts the pin 1b. On the other hand, the set plate 20 is
Since the abutment front edge 20d corresponds to the small diameter portion of the cam plate 29c, it is pulled by the spring 21, so that the extension piece 3d of the pinch roller unit 3 separates from the protruding piece 20a.

As a result, the unit 3 is rotated and the pinch row 5 roller 3 is rotated.
a is pressed against the capstan 4a. When the set plate 20 is further pulled, the engagement protrusion 17 of the take-up unit 17 is restricted by the abutment rear end edge 20c.
d is moved by the spring 17e to follow the abutting rear end edge 20c.

As a result, the lever 17a is rotated, and the rotating shaft 17c is brought into contact with the rubber roller 10b of the take-up reel stand 10. Therefore, since the take-up pulley 7b is rotated by the belt 19, the take-up reel stand 10 is rotated (FIG. 24). As described above, the take-up reel stand 10 and the capstan 4a, which is the rotating shaft of the first flywheel 4, are rotated by the rotation of the motor 18, and the tape is played back by the operation of the amplifier A.

When the stop lever 45 is pressed by the play operation, the second lock plate 75 is pushed down by the lock release piece 45a, so the third lock plate 76 is further pushed down, and the lock piece 44a'' of the play lever 44 is pressed down. The engagement with the third lock plate 76 is disengaged, and the lever arm 40, which will be described later, returns to its original position.The lock release piece 45a of the stop lever 45 closes the switch S8.On the other hand, since the play arm 33 is rotated, , the slide lever 38 in contact with this is pushed, opening the switch S6,
Switch S9 is closed. Therefore, the solenoid 31 is energized, the lock arm 30 and the cam teeth 29b are unlocked, the cam plate 29c rotates a little, and the third gear 29 and the second
The gear 26 is meshed with the gear 26. As a result, the third gear 29 rotates approximately 180 degrees, so that the play arm 33 returns to its original position. Therefore, the play arm 33 comes into contact with the control rod 2f,
Return the head stand 2 to the intermediate position. On the other hand, set plate 2
0 is pulled against the spring force of the spring 21, and the abutting rear edge 20c returns the take-up unit 17 to its original state against the spring force of the spring 17e. Therefore, since the rotating shaft 17c separates from the rubber roller 10b of the take-up reel stand 10, the rotation of the take-up reel stand 10 is stopped.
Also, when the set plate 20 is pulled, the protruding piece 20a pushes the extension piece 3d of the pinch roller unit 3, so that
The unit 3 is rotated and the pinch roller 3a is separated from the capstan 4a. As described above, the rotation of the take-up reel stand 10 is stopped and the pinch roller 3a is separated from the capstan 4a, so that the tape stops running.

Furthermore, since the slide lever 77 returns to its original position, the switch S3 is opened, and the power to the motor 18 and amplifier A is also cut off. Next, when the ejector lever 60 is pulled, the sub-ejector lever 61 is rotated at the same time as the head stand 2 finishes retracting, and the engagement between the hook portion 61b and the engagement rod 64a of the lid body 64 is released.

Therefore, the lid 64 is rotated, and the cassette 8 is released from the head stand 2. Further, as the head stand 2 moves, the engaging claw 7d is pushed down by the back surface of the head stand 2,
Further, when the end face of the lock elongated hole 2e passes through, it faces into the elongated hole 2e, so when the eject lever 60 is released, the engaging claw 7d and the elongated hole 2e are engaged. This ends the eject. Recording operation With the cassette 8 loaded in the head stand 2, press the recording lever 5.
When 3 is pressed, the hook portion 53a1 of the lock piece 53a is engaged with the hook portion 74c of the first lock plate 74 (FIG. 21E).

When the recording lever 53 is pressed, the switch SlO is closed and a recording circuit (not shown) is activated. Further, the lock piece 53a of the recording lever 53 moves the slide lever 77, so the switch S3 is closed. Therefore, the motor 8 operates and the solenoid 31 is energized, so the head stand 2 further moves forward by the same operation as in the play state described above, and the set plate 20 retreats, so that the pinch roller 3a is moved to the capstan 4a. Pressure-welded,
Further, the rotating shaft 17c is the rubber roller 10 of the take-up reel stand 10.
b. The tape therefore runs, and recording begins (FIG. 24). Note that the play lever 44 is engaged with a third lock plate 76 that is pulled by the arm lever 40. When the fast-forward lever 47 is pushed with the fast-forward operation cassette 8 loaded on the head stand 2, the lock piece 47a is engaged with the hook portion 74b of the first lock plate 74.

Further, when the fast-forwarding lever 47 is pushed, the fast-forwarding arm 35 moves and the hanging piece 35b is in contact with the bent portion 47c, so the fast-forwarding arm 35 pushes the protruding piece 34c of the fast-forwarding unit 34. As a result, the fast-forwarding unit 34 rotates, and its gear 34a becomes the gear 10a of the take-up reel stand 10.
It meshes with. Further, the rubber roller 34b is pressed against the first flywheel 4. On the other hand, when the fast forward lever 47 is pushed, the lock piece 47a moves the slide lever 77, so the switch S3 is closed and the motor is energized. Therefore, the take-up reel stand 10 rotates at high speed (FIG. 25).
Further, when the stop lever 45 is pressed, the second lock plate 75 is lowered, so the first lock plate 74 is also lowered.

As a result, the engagement between the fast-forward lever 47 and the first lock plate 74 is released, and the lever 47 returns to its original state. Accordingly, the fast-forwarding arm 35 also returns to its original state, so the fast-forwarding unit 34 also returns, the gear 34a and the gear 10a are disengaged, and the rubber roller 34b is also separated from the first flywheel 4. Also, the slide lever 77 returns to switch S,
is opened and becomes a stop state. Rewinding operation When the rewinding lever 48 is pushed with the second cassette 8 loaded on the head stand 2, the locking piece 48a is engaged with the hook portion 74b of the first locking plate 74.

Further, when the rewind lever 48 is pushed, the fast forward arm 35 is rotated against the spring force of the spring 36, so the fast forward unit 34 is pulled by the spring force of the spring 37 and rotates, and its gear 34a is rotated. and gear 9 of supply reel stand 9
a are meshed with each other. Further, the rubber roller 34b is pressed against the second flywheel 6. On the other hand, when the rewind lever 48 is pushed, the lock piece 48a moves the slide lever 77, so the switch S3 is closed and the motor 18 is energized. Therefore, the supply reel stand 9 is reversely rotated at high speed (FIG. 26). Further, when the stop lever 45 is pushed, the second lock plate 75 is lowered, and the first lock plate 74 is also lowered.

This releases the engagement between the rewind lever 48 and the first lock plate 74, and the lever 48 returns to its original state. Therefore, due to the spring force of the spring 36, the fast-forwarding arm 35 also returns to return the fast-forwarding unit 34 to its original state. As a result, the gear 34a and the gear 9a are disengaged, and the rubber roller 34b is also separated from the second flywheel 6. Further, the slide lever 77 is also returned and the switch S3 is opened to enter the stop state. 7 Auto-stop operation during play or recording operation As mentioned above, during play or recording operation, the head stand 2 advances to the recording/playback position and the take-up reel stand 10 is rotating. A rotational force is applied to the arms 14 and 15 in the same rotational direction as that of the take-up reel stand 10.

Therefore, the auto stop lever 32 engaged with the first arm 14 is also given a rotational force in the same direction, and the engagement protrusion 32b provided at its tip engages with the eccentric circular groove 25a of the first gear 25.
is pressed against the outer peripheral wall of the On the other hand, the first gear 25 is meshed with the second gear 26, and since the belt 28 is wound between the second gear 26 and the first flywheel 4, the first gear 25 is rotating. Therefore, the first gear 25 is rotated with the engagement protrusion 32b pressed against the outer circumferential wall, and the engagement protrusion 32b and the protrusion 25c are not engaged with each other. When all of the tape is wound up and the take-up reel stand 10 stops rotating, the external force that was pressing the engagement protrusion 32b against the outer peripheral wall disappears, so that the engagement protrusion 32b
After passing through 5a1, it is held at that trajectory position. Since the protrusion 25c is located on this trajectory, the rotation of the first gear 25 engages the engagement protrusion 32b. This causes the auto-stop lever 32 to be pulled and the stop lever 45 to be pulled. Pulling the stop lever 35 is the same as pushing the stop lever 35, and therefore the play state is changed from the play state to the stop state by an action similar to the stop action. In addition, the above-mentioned engagement protrusion 3
2b and the protrusion 25c are engaged, as the first gear 25 rotates, the shoulder portion 32c of the auto stop lever 32 comes into contact with the release protrusion 25d of the first gear 25, and the engagement protrusion 32
b and the protrusion 25c are disengaged, and the stop lever 45 returns to its original position. Auto-stop operation during fast forwarding As described above, during fast forwarding, the head stand 2 is in the intermediate position, and the take-up reel stand 10 is rotating at high speed in the same direction as in the play state.

Therefore, the engagement protrusion 32b fits into the eccentric circular groove 25a of the first gear 25.
is pressed against the outer peripheral wall of the Then, when the rotation of the take-up reel stand 10 stops, the engaging protrusion 32b and the protrusion 25c are engaged by the same operation as described above, and the following operation is the same as that during play or recording, so a description thereof will be omitted. do.
Note that even if the stop lever 45 is pulled and the switch S8 is closed, the head stand 2 is in the intermediate position, so the switch S9 is closed.
remains open and the solenoid 31 is not energized.

Auto-stop operation during rewinding As described above, during rewinding, the head stand 2 is in the intermediate position, and the take-up reel stand 10 is rotating at high speed in the opposite direction to that in the play state.

Therefore, since the auto-stop lever 45 is given a rotational force in the opposite direction to that in the above case, the engagement protrusion 32b is pressed against the cam base 25b in the eccentric circular groove 25a of the first gear 25. As a result, while the take-up reel stand 10 is rotating, the first gear 25 is rotated in a state in which the engagement protrusion 32b is in pressure contact with the reel stand 25b. Then, when the rotation of the take-up reel stand 10 stops, the engagement protrusion 32b is moved to the narrowest groove portion 25a1.
After passing through, it is held at that trajectory position. Since the protrusion 25c is located on this trajectory, the rotation of the first gear 25 causes it to engage with the l-engaging protrusion 32b. Since the following operation is exactly the same as the auto-stop operation during fast forwarding, the explanation will be omitted. Pause operation during play or recording As described above, during play or recording, the head stand 2 is in the recording/reproducing position and the take-up reel stand 10 is rotating.

When the pause lever 42 is pressed here, it is locked by the lock plate 43 and the set plate 20 is pushed to rotate the take-up unit 17. As a result, the rotating shaft 17c separates from the rubber roller 10b of the take-up reel stand 10, and the rotation of the take-up reel stand 10 is stopped. That is, the state is the same as when the tape has stopped running in the play or record state described above, but here, the biasing arm 22 is rotated by the spring force of the spring 23, causing the control lever 24 to rotate. Therefore, the auto-stop lever 32 that is in contact with the control lever 24 is rotated in the same direction as in the play or fast-forward state, and the engaging protrusion 32b is moved into the eccentric circular groove 2.
It is brought into contact with the outer peripheral wall of 5a. As a result, the first gear 25
While rotating, the engaging protrusion 32b and the protrusion 25c are not engaged, that is, the playing or recording state is not stopped (FIG. 27). Auto stop operation during fast forwarding or rewinding When the head stand 2 is in the intermediate position during fast forwarding or rewinding, and the take-up reel stand 10
is rotating at high speed.

Even if the pause lever 42 is pressed here, since the large diameter part of the cam plate 29c is in contact with the set plate 20 and the biasing lever 22, both levers 20 and 22 will not be affected in any way, and therefore the biasing lever 22 will not be affected in any way. No external force is applied to the auto-stop lever 32. That is, the auto-stop operation is performed by an operation similar to the above-mentioned auto-stop operation after the tape is wound or rewound. When the fast forward lever 47 is pressed in the cue operation play state, the fast forward unit 34 is rotated via the fast forward arm 35, the gear 34a is engaged with the take-up reel stand 10 and the gear 10a, and the rubber roller 34b is connected to the first flywheel 4. Apply pressure.

When the fast forward lever 47 is pressed, the switch S is closed via the slide lever 38, and the switch Sll is closed via the auxiliary lever 49, so that the solenoid 31 is energized. As a result, the cam plate 29c rotates, the arm lever 33 is rotated, the head stand 2 is returned to the intermediate position, the pinch roller 3a is separated from the capstan 4a, and the rotating shaft 17c is rotated, and the rubber roller 10a of the take-up reel stand 10 is moved away from the pinch roller 3a.
move away from Therefore, the take-up reel stand 10 is rotated at high speed and enters a fast-forwarding state. Furthermore, even if the first lock plate 74 descends, the third lock plate 76 does not descend, so the play lever 44 remains locked to the third lock plate 76. Note that since the lever arm 40 is not rotated by the set plate 20, the play lever 44 is not returned. When the hand is released from the fast-forwarding lever 47, the fast-forwarding arm 35 returns, the fast-forwarding unit 34 also returns, the gear 34a is disengaged from the gear 10a of the take-up reel stand 10, and the rubber roller 34b is separated from the first flywheel 4, causing fast-forwarding. The condition is canceled.

Also, as the fast forward lever 47 returns, the slide lever 38 and the auxiliary lever 49 return, so the switches S6 and S
4 is closed (switch ■ is closed because the second lock plate 75 is lowered, and switch S3 is closed due to the slide lever 77
is moving (closed), so the solenoid 31 is energized. As a result, the cam plate 29c rotates, the arm lever 33 is rotated, the head stand 2 is moved to the recording/playback position, the set plate 20 is moved, the pinch roller 3a is pressed against the capstan 4a, and the rotating shaft 17c is connected to the take-up reel. It comes into contact with the rubber roller 10a of the stand 10. Therefore, it returns to the pre-state again. When the rewind lever 48 is pressed in the review operation play state, the fast forward arm 35 is rotated and pulls the fast forward unit 34 via the spring 37, but at this time the protrusion 34d of the fast forward unit 34 touches the step 38c of the slide lever 38. Since they abut, the gear 34a does not mesh with the gear 9a of the supply reel stand 9.

That is, the tape is prevented from being pulled in the opposite direction before the playing state is released. Since the rewind lever 48 is pressed, the switch S is moved by the auxiliary lever 49.
Since the switch S is closed (the switch S is closed by the slide lever 38), the solenoid 31 is energized. As a result, the head stand 2 returns to the intermediate position in the same way as the cue operation described above, the pinch roller 3a separates from the capstan 4a, and the rotating shaft 17c separates from the rubber roller 10a of the take-up reel stand 10. Further, by rotating the play arm 33, the protrusion 34 of the fast-forwarding unit 34
d and the stepped portion 38c of the slide lever 38 are disengaged. The fast-forwarding unit 34 further rotates, the gear 34a and the gear 9a of the supply reel stand 9 are engaged, and the rubber roller 34b is pressed against the second flywheel 6, resulting in a rewinding state. When the rewind lever 48 is released, the fast-forward arm 35 and the fast-forward unit 34 return to their original states, the gear 34a disengages from the gear 9a of the supply reel stand 9, and the rubber roller 34b moves to the second flywheel. 6, the rewinding state is released.

Thereafter, the player returns to the play state again by the same operation as the cue operation. When the rewind lever 48 is pressed in the quick review recording state, the first lock plate 74 is lowered by the lock piece 48a, so that the recording lever 53 and the first lock plate 74 are disengaged and the recording circuit is stopped.

However, the play lever 44 is held in a locked state as in the cue and review operations described above. Note that the second lock plate 75 of the rewind lever 48 is connected to the play lever 44.
By being lowered by the lock piece 48a, the lock piece 48a
and the first lock plate 74 are never engaged. Further, in the cue and review operations described above, the fast forward lever 47 and the rewind lever 48 are not engaged with the first lock plate 74, respectively, for the same reason as described above. Then, when the rewind lever 48 is pressed, the rewind state is entered by an operation similar to the review action described above, and when the rewind lever 48 is released, the play state is entered.

Therefore, the recorded portion can be replayed simply by operating the rewind lever 48.
It is something that can be played. Auto repeat operation If the auto repeat lever 66 is locked when neither recording/playback nor fast forwarding nor rewinding is being performed, switch S7
is closed, so the motor 18 operates.

Further, the repeat slide lever 69 is moved forward by the auto-repeat lever 66, and the engagement piece 69d provided on the lever 69 pushes the upright piece 35a of the fast-forward lever 35, so the fast-forward lever 35 is rotated and the spring 37 The fast forwarding unit 34 is rotated via the . Therefore gear 34
a is meshed with the gear 9a of the supply reel stand 9, and the rubber roller 34b is pressed against the second flywheel 6, resulting in a rewinding state. When the entire tape is rewound and the take-up reel stand 10 stops rotating, the stop lever 45 is pulled by the auto-stop operation described above.

Here, the switch S7 is closed, and the head stand 2
Since the is in the intermediate position, the switches S4 and S6 are closed, and when the stop lever 45 is pulled and the second lock plate 75 is lowered, the switch (2) is closed, so the solenoid 31 is energized. . Therefore, the play arm 33 is rotated, the head stand 2 is advanced to the recording/reproducing position, and the set plate 20 is moved forward, so that the pinch roller 3a
The rotating shaft 17c and the rubber roller 10a of the take-up reel stand 10 are brought into contact with each other. Furthermore, the slide lever 38 is rotated by the rotation of the play arm 33.
is advanced, the stepped portion 38c pushes the protrusion 34d of the fast-forwarding unit 34, rotates the fast-forwarding unit 34 a little, and releases the gear 34a from the gear 9a of the supply reel base 9, and the rubber roller 34b and the second flywheel 6
Let go of. Therefore, it becomes a play state. Note that when the set plate 20 moves forward, the lever arm 40 is rotated, so the play lever 44 is pulled, and the third lock plate 76 is rotated.
It is possible to know from the outside that a play operation is in progress. When the play operation is completed and the rotation of the take-up reel stand 10 stops, the auto-stop operation described above is activated and the play arm 33 rotates.

As a result, the slide lever 38 moves forward, and the stepped portion 38c
is disengaged from the protrusion 34d of the fast-forwarding unit 34, and the fast-forwarding unit 34 is rotated so that the gear 34a and the gear 9a of the supply reel stand 9 are engaged with each other, and the rubber roller 3
4b and the second flywheel 6 are brought into pressure contact with each other, resulting in a rewinding state. Thereafter, in the same way as the above-mentioned operation, when the rewinding is completed, the play operation is started and becomes an auto-repeat operation.
Auto-repeat operation during recording operation When the auto-repeat lever 66 is locked during the recording operation, the recording operation is performed without being rewound by an operation similar to that during the play operation described above.

When the recording is completed and the rotation of the take-up reel stand 10 is stopped, an auto-stop operation is performed, the recording lever 53 is released, and a rewinding operation is started. Thereafter, the play state is entered after rewinding is performed by an operation similar to the auto-repeat operation in the play operation described above. Manual auto repeat operation If a play operation is performed with the auto repeat lever 66 locked, the auto stop operation will operate at the end of the play operation and rewind will be performed, but the rewind will occur before the end of the play operation. If you wish to do so, press the stop lever 45.

When the lever 45 is pressed, the switch S8 is closed (the switch S7 is closed because the auto-repeat lever 66 is locked, and the switch S is closed because the play arm 33 is rotated clockwise and the slide lever 38 is moved forward). Therefore, the solenoid 31 is energized. Therefore, the play arm 33 is rotated, the head stand 2 is moved back to the intermediate position, and the set plate 20 is moved forward, so that the pinch roller 3a and the rotating shaft 17c are separated from the capstan 4a and the take-up reel stand 10, respectively. Further, as the play arm 33 rotates, the slide lever 38 retreats and releases the restriction on the fast-forward unit 34, so the fast-forward unit 34 rotates and the gear 34a meshes with the gear 9a of the supply reel stand 9, and the rubber roller 34b is pressed against the second flywheel 6. Therefore, it becomes a rewinding state. To switch from the rewinding state to the playing state, press the stop lever 45 again, which closes the switch (2), and since the head stand 2 is in the intermediate position, switches S4 and S6 close, and then the auto repeat lever. Depending on the locked state of 66, switch S,
Since the solenoid 31 is closed, the solenoid 31 is energized.

Since the following operation is the same as the operation from the rewinding state of the auto-repeat operation described above to the play state when the auto-stop is activated, a description thereof will be omitted. Fast-forward operation in auto-repeat operation When the fast-forward lever 47 is pressed to perform a fast-forward operation during a play operation with the auto-repeat lever 66 locked, the lock piece 47a moves against the first lock plate 74.
is engaged with the hook portion 74b of.

Also, as the fast forwarding lever 47 moves forward, the slide lever 38
moves forward, switch S9 is closed, and auxiliary lever 49
Since the motor moves forward and the switch Sll is closed, the solenoid 31 is energized. Therefore, the head stand 2 is retreated to the intermediate position by the same operation as when the stop lever 45 is pressed during the play operation in the auto-repeat operation described above,
The pinch roller 3a is connected to the rotating shaft 17 from the capstan 4a.
c are separated from the take-up reel stand 10, respectively. Since the fast-forwarding lever 47 is pressed, the fast-forwarding arm 35 moves and pushes the protrusion 34c of the fast-forwarding unit 34 to rotate the fast-forwarding unit 34. Therefore, the gear 34a is meshed with the gear 10a of the take-up reel stand 10, and the rubber roller 3
4b is brought into pressure contact with the first flywheel 4, resulting in a fast forwarding state. If the stop lever 45 is pressed in this fast-forwarding state, the play operation is shifted to the play operation by an operation similar to the operation from rewind to play in the manual repeat operation described above. Song interval detection operation When the song interval detection lever 56 is rotated, the lower tip 56b rotates the control plate 59 counterclockwise against the spring force of the winding spring 60.

At the same time, since the protrusion 56a of the lock plate 57 moves, a clockwise rotational force is applied by the spring force of the coiled spring 58. Therefore, the pawl 57a of the lock plate 57 is initially attached to the control plate 5.
However, as the control plate 59 rotates, the claw 5
Since one end of the control plate 59 is located above the lock plate 7a, the claw 57a of the lock plate 57 and the control plate 59 are engaged and locked by the spring force of the coiled spring 58. Also, the song interval detection lever 5
6 turns the switch Ps to ON. Next, when the play lever 44 is operated, the tape enters a playback state and starts running. Note that, at this time, since the third lock plate is pressed down by the control plate 59, the play lever 44 is not locked and is held in the operated state only by the lever arm 40. For example, when the rewind lever 48 is operated in this playback state, the lever 48 is locked to the first lock plate 74 and the playback state is shifted to the rewind state. Since the song interval detection lever 56 and the rewind lever 48 are operating, the song interval detection circuit MS is activated and the song interval (no signal period) on the tape is activated.
When this is detected, the play lever 44 is pulled in by the lever arm 40, lifts the second lock plate 75, releases the rewind lever 48 locked to the first lock plate 74, shifts to the playback state, and selects the desired recording portion. Play. Rapid forwarding can also be performed in the same manner. The recording timer operation power switch S1 is closed and the recording lever 53 is locked. When the timer switch S2 is closed in this state, the slide lever 77 has moved, so the switch S3 is closed, and the recording lever 53 has moved, so the switch S1 is closed.
O is closed, and since the head stand 2 is in the intermediate position, the switches S4 and S6 are closed. Therefore, recording is started by an operation similar to the recording operation described above, and when the tape end is reached, the recording is stopped by an auto-stop operation. The play timer operation power switch S1 is closed and the play lever 44 is locked.

When the timer switch S2 is closed in this state, the slide lever 77 has moved, so the switch S3
is closed, the play lever 44 is pushed again, and the second lock plate 75 is closed.
is lowered, so switch ■ is closed, and head stand 2 is closed.
Since is at intermediate position a, switches S4 and S6 are closed. Therefore, the play is started by an operation similar to the play operation described above, and when the tape reaches the end, the tape is brought to a stop state by the auto-stop operation. Remote Control Operation Mechanism When the remote control switch Sl2 provided at a location not shown in the drawings is pressed, the motor 18 is energized, the second gear 27 is rotated, and the first gear 25 is rotated.

However, since it is not in the recording/reproducing state or in the fast-forwarding or rewinding state, the supply reel stand 9, take-up reel stand 10 do not rotate, and the auto-stop operation is activated. To operate the remote control, the song interval detection lever 56 is locked in advance and the third lock plate 76 is lowered. Then, when the stop lever 45 is pulled by the auto-stop operation and the switch (2) is closed (at this time, since the head stand 2 is in the intermediate position, the switches S4 and S6 are also closed), the solenoid 31 is Power is applied. Therefore, the play arm 33 rotates, the head stand 2 moves forward to the recording/reproducing position, the set plate 20 is pulled forward, the pinch roller 3a is pressed against the capstan 4a, and the rotating shaft 17c is moved against the rubber roller 10b of the take-up reel stand 10. is brought into contact with. Therefore, the play state is entered, and the play lever 44 is pulled by the lever arm 40. However, due to this time-song interval detection lever 56, the third
Since the lock plate 76 is lowered, the lock piece 44a''
and the third lock plate 76 are not engaged. Therefore, the play lever 44 remains pulled only by the arm lever 40. Then, when the remote control switch Sl3 is closed, even if the remote control switch Sl2 is opened, the play state is reached, so S3 is closed. Therefore, the solenoid 31 is energized, so the head stand 2 returns to the intermediate position, the pinch roller 3a separates from the capstan 4a, and the rotating shaft 17c separates from the rubber roller 10b. Furthermore, the play lever 44 is returned to its original state by the arm lever 40. Then press the remote control switch SL again. When it is closed, the above-mentioned operation returns to the playing state. Memory operation mechanism Press the memory switch Sl, which is not shown in the drawing.

Then, set the counter 11 to zero and turn the play lever 44.
When locked, the above-mentioned operation becomes a play operation. If you want to open the part you just played again, use the stop lever. 45 and performs the above-mentioned stop operation to bring the device into a stop state. Next, the rewind lever 48 is locked and the tape is rewound by the rewind operation described above. When the counter 11 is reversed and reaches 999, the counter switch Sl5 is closed and the slide lever 7 is closed.
7 has moved and the switch S3 is closed, and the head stand 2 is in the intermediate position and the switch S6 is closed, the solenoid 31 is energized. As a result, the play arm 33 is rotated, the head stand 2 is advanced to the recording/playback position, and the set plate 20 is moved forward, so that the pinch roller 3a is pressed against the capstan 4a, and the rotation shaft 17c is the rubber roller 10 of the take-up reel stand 10
It comes into contact with b. Therefore, the play state is established, and the play lever 44 is also moved forward and locked by the lever arm 40. Note that the rewind lever 48 is unlocked. Eject operation while the take-up reel stand is rotating When the take-up reel stand 10 is being rotated by the driving force of the motor, that is, during recording, playback, or fast-forwarding operations, operating the eject lever 60 will cause the head stand 2 to move to the final position. As it moves backward, the cassette 8 is ejected from the reel stands 9 and 10.

However, in this state, the take-up reel stand 10 continues to rotate by the driving force of the motor, so the device continues to operate. Therefore, as shown in Figs. 16 to 18, the eject lever 6 is
When 0 is operated, the take-up reel stand 10 is forcibly stopped, and the apparatus is stopped by the auto-stop operation described above. That is, in the embodiment shown in FIG. 16, the take-up reel stand 10 is stopped by the return of the pinch roller unit 3, in FIG. 17 by the retreat of the head stand 2, and in FIG. 18 by the ejection of the cassette 8. . Remote control operation in auto-repeat operation The remote-control operation does not operate unless the song interval detection lever 56 is locked as described above, but the case where the auto-repeat lever 66 is also locked will be explained here.

In this case, as can be seen from the circuit diagram in FIG.
Since they are connected in parallel with the circuits of the switches S8 and S9, the solenoid 31 can be energized each time the remote control switch Sl3 is operated.

Therefore, the above manual repeat operation can be performed remotely. As described above, in the present invention, the cam plate is unlocked by energizing the solenoid by lever operation, and the cam plate is slightly rotated by the rotational force applying means to mesh with the drive gear, thereby causing the cam plate to engage with the drive gear. The plate is rotated to control the set plate, press the pinch roller against the capstan, and transmit rotational force to the take-up reel.The lever operation is as simple as closing a switch, and the touch is soft and easy to handle. Therefore, since two operations, that is, the pinch roller unit and the take-up unit, are controlled, the structure can be simplified.

[Brief explanation of the drawing]

The figures show an embodiment of the drive mechanism of a tape recorder according to the present invention, in which Fig. 1 is a top view, Fig. 2 is a bottom view, Fig. 3 is a top view showing the locking mechanism of the magnetic head stand, and Fig. 4 is a top view. FIG. 5 is a sectional view showing the take-up reel stand and part of the auto-stop mechanism; FIG. 6 is a bottom view showing the take-up reel stand and part of the auto-stop mechanism;
Fig. 7 is a top view showing the operating lever and the drive mechanism, Fig. 8 is a perspective view showing the operating lever and the drive mechanism, Fig. 9 is a perspective view of the auto-stop mechanism, Fig. 10 is a perspective view of the driving force transmission part, Fig. 11 is a top view of the music select operating lever, Fig. 12 is a side view showing the operation of the music select operating lever, Fig. 13 is a top view of the eject operating lever and auto repeat operating lever, and Fig. 14 is a top view of the eject operating lever. and side view of the auto-repeat control lever, 1st
FIG. 5 is an operational diagram of the eject operating lever and auto-repeat operating lever, FIG. 16 is an operational diagram of the reel stand stop mechanism, and FIG. 17 is an operational diagram showing another embodiment of the reel stand stop mechanism.
Fig. 18 is an operation diagram showing another embodiment of the reel stand stop mechanism, Fig. 19 is a perspective view of the operating lever, and Figs. 20A to 20.
Figure C is an operational diagram showing the relationship between the operating lever and the lock plate, Figures 21A to 21E are operational diagrams showing the relationship between each operating lever and the lock plate, Figure 22 is a circuit diagram, and Figure 23 is a head diagram. Figure 24 is a diagram of the operation at the intermediate position of the stand, and Figure 25 is a diagram of the play operation.
The figure is a diagram of fast forward operation, Figure 26 is a diagram of rewind operation, and Figure 27 is a diagram of rewind operation.
The figure is a play pause operation diagram, and FIG. 28 is an auto-repeat operation diagram. DESCRIPTION OF SYMBOLS 1...Chassis, 2...Head stand, 3...Zench roller, 4...First flywheel, 6...Second flywheel, 7...Lock plate, 8...Cassette, 9
... Supply reel stand, 10... Take-up reel stand, 11.
...Counter, 14...First arm for end detection, 15
...Second arm for end detection, 17...Take-up unit, 18...Motor, 20...Set plate, 22...Biasing arm, 24...Control lever, 2
5...First gear, 25a...Eccentric circular groove, 25c...
・Protrusion, 26...Second gear, 29...Third gear, 2
9b...Cam tooth, 29c...Cam plate, 30...Lock arm, 31...Solenoid, 32...Auto stop lever, 33...Play arm, 34...
Rapid feed unit, 35... Rapid feed arm, 38...
Slide lever, 40... Lever arm, 42...
Pause lever, 43...Pause lever lock plate, 44
...Play lever, 45...Stop lever, 47
...Fast forward lever, 48...Rewind lever 53...
・Recording lever, 56... Song interval detection lever, 57...
Lock plate, 59... Control board, 60... Execution lever, 61... Sub-execution lever, 64... Lid body, 66... Auto repeat lever, 67... Repeat lock plate, 69...Repeat slide lever, 7
1...Reel stop plate.

Claims (1)

[Claims] 1. A second gear that is constantly rotated by a motor, a third gear that is equipped with cam teeth and an eccentric cam plate, and a third gear that has two notches that are substantially opposite to each other, and a lock arm that engages with the cam teeth as a play lever or a recording lever. The solenoid is energized when operated and releases the engagement between the lock arm and the cam teeth.The solenoid is brought into contact with the eccentric cam plate, and is displaced as the eccentric cam plate rotates to control the forward and backward movement of the head stand. a play arm that contacts the eccentric cam plate at a position opposite to the play arm, and a set plate that is slid as the eccentric cam plate rotates; The pinch roller unit that presses the pinch roller against the capstan when it is in contact with the small diameter part of the eccentric cam plate is constantly rotated by the motor, and when the set plate is in contact with the small diameter part of the eccentric cam plate, the rotating shaft is The solenoid is energized to disengage the lock arm and the cam teeth when the notch of the third gear faces the second gear. The eccentric cam plate is slightly rotated by the pressure of the play arm or set plate that is in contact with the large diameter portion of the eccentric cam plate, and the second gear and the third gear are meshed, whereby the play arm and a drive mechanism for a tape recorder, characterized in that the operation of the set plate is controlled.