JPS6014416B2 - Tape recorder drive mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive mechanism for a tape recorder equipped with a so-called auto-stop mechanism that detects the end of a tape and automatically stops the device. To provide a drive mechanism for a tape recorder which engages a crescent-shaped protrusion of an auto-stop lever to a stop state when a take-up reel table stops on the protrusion.

A second object of the present invention is to provide a drive mechanism for a tape recorder in which the engagement protrusion and the protrusion are inevitably released by a release protrusion provided on the rotary plate.

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

1 is a chassis, 2 is a head stand that moves back and forth guided by a guide pin la and a stopper pin lb (this pin lb also serves to position the cassette) on the chassis, and includes an erasing head 2a and a green reprint head. 2b is attached.

The head stand has a guide slot 2c through which the pin la is inserted, a guide slot 2c through which the pin lb is inserted, and a pin l.
A stopper elongated hole 2d into which the lock plate 7b is inserted and a lock elongated hole 2e into which an upright piece 7c of the lock plate 7, which will be described later, is inserted are formed. Further, lc is a pin for positioning the cassette.
Reference numeral 3 denotes a pinch low unit equipped with a pinch roller 3a, which is rotatably supported by a support pin LD provided on a shield on the chassis 1, and is supported by a spring 3b on the side of a cap stand 4a which will be described later. is energized.

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 supported by a bearing (not shown) formed on the chassis and a retaining plate 5 (Fig. 2) attached to the back of the chassis 1, and its rotating shaft is connected to the capstan. It is 4a.

Reference numeral 6 denotes a second flywheel which is pivotally supported by a bearing (not shown) formed in the chassis, and 7 a second flywheel which is provided with a shield on the back surface of the chassis 1, through which a pin lc is passed through and which is subjected to an upward spring force by a spring 7a. With the head stand locking plate (Figs. 3 and 4) being energized, the engaging portion 7b is engaged with the smallest hole lf bored in the chassis 1, and is rotated about this as a fulcrum. There is.

Also, this head stand lock plate 7 has a long hole 1g in the chassis.
A more protruding upright piece 7c is formed and the head stand 2
a locking 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 spring 7a by the set 8.
As a result, the engaging claw 7d disengages from the lock elongated hole 2e of the head stand 2, and the head stand 2 is moved forward by a spring (not shown), that is, as shown in FIGS. 3 and 4. In Figure 1, it moves to the right, and in Figure 1, it moves upward.

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

1. A winding reel table is rotatably supported by a shaft (not shown) installed on a receiving plate 5, and as shown in FIG. A rubber roller 10b is formed at the bottom of the rubber roller 10b, and a belt groove 10e is formed at the bottom of the rubber roller 10b, and a belt groove 10e is formed in which a belt 12 is wound between the rubber roller 10b and a counter 11 fixed above the chassis.

This winding roll stand 10 is iron-bonded to a bearing 13 which is supported by the shaft of the receiving plate 5, and this bearing 13 and the winding roll stand 1
The first arm 14 and the second arm 15 for end detection are connected between the
has been inserted. A protrusion 14a formed on the first arm 14 is inserted into an elongated hole 15a formed in the second arm 15. Further, a resilient spring 16 is interposed between the first and second arms 14 and 15. And now the winding IJ-
When the winding roll table 10 rotates, the first arm 14 is pressed against the winding roll table 10 side by the resilient spring 16, and the second arm 15 is pressed against the bearing 13 side, so that the first and second arms are compressed. A rotational force is applied to 14 and 15 in the same rotational direction.

Note that the first arm 14 is formed with a bifurcated piece 14b that engages with a protrusion 32a of an auto-stop 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 17b is supported approximately at the center.

The rotating shaft 17c of this take-up pulley 17b projects from the lever bar 17a and can slide against the rubber roller 10b of the take-up roll stand 10 placed on top. Further, an engagement protrusion 17d is formed at the tip of the take-up lever 17a to come into contact with a front end green 20c of the set plate 20, which will be described later.
Further, a spring 17e is stretched between the shaft-supported side and the chassis 1, and rotates the lever 17a clockwise. That is, the engaging protrusion 17d is pressed toward the supporting front end green 20c of the set plate 20. 18 is a motor, and a belt 19 is wound around the pulley 18 via a take-up pulley 17b, a second flywheel 6, and a first flywheel 4.

Reference numeral 20 denotes a set plate slidably provided on the chassis 1, and includes an extension piece 3d of the above-mentioned pinch low unit 3 and a protruding piece 20a that supports when the cassette is attached.
and a notch 2 into which one end of the lever arm described later is inserted.
0b, an abutting front end green 20c that is always in contact with the engaging protrusion 17d of the take-up unit 17, and an abutting rear end green 20d that is always in contact with a cam plate 29c, which will be described later.

Note that this set plate 2 spring 21 always applies a spring force in the forward direction. Alternatively, the other piece of the biasing arm 22 is always in contact with the cam plate 29c.
Reference numeral 24 designates a control lever that is supported by a shaft mounted on a chassis that supports a first gear 25 (to be described later), and one end of which is suspended when the biasing arm 22 is rotated in the anti-Japanese direction. It is rotated clockwise by the piece 22a, and at this time, the other end touches the auto stop lever 32, and the lever 3 is rotated clockwise.
Rotate 2 counterclockwise.

Reference numeral 25 denotes a first gear bearing on the chassis 1, and as shown in the rear 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.
The same 0 as the middle of the narrowest groove part 25a formed by the outer peripheral wall of
It is located and formed on a circle. A second gear 26 is fixed to a rotary shaft 27a of a pulley 27 bearing on the chassis 1, and is meshed with the first gear 25.

A belt 28 is wound between the pulley 27 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. 29 is a third gear which is supported by the chassis 1 and meshes with the second gear 26, and has cutout portions 29a formed at two locations 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
9b, and is disengaged when the solenoid 31 is energized and attracted. This is a lock arm supported on the chassis 1.

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. In FIG. 9, when the take-up reel table 10 rotates in the tape winding direction, that is, in the direction of the arrow, the resilient spring 1
Since the first arm 14 is pressed against the take-up roll 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 table 10 supplies the 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 is rotated in the opposite direction. A rotational force is applied, so that the engagement protrusion 32b is in 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 table 10 stops rotating, the first arm 14 becomes free, and the biasing force applied to the auto-stop lever 32 is removed. will also disappear. Therefore, after the first gear 25 rotates and the engagement protrusion 32b passes through the narrowest groove portion 26a, 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 26, 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 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 tensioned between the other end of the play arm 33 and the chassis 1, and applies rotational force to the play arm 33 counterclockwise. Therefore, the roller 33a is always in contact with the cam plate 29c. Further, the end of the play arm 33 corresponds to a control village 2f protruding from the lower surface of the head stand 2. When the cassette 8 is mounted, the cassette stand 2 moves forward for the reason given, and the control punch 2f comes into contact with the play arm 33 and stops.

This state is the standby 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, and the cam plate 29c is moved toward the set plate 20 (the 1.7th
, 8) is slightly rotated by the rear end green 20d of the twill (which is pulled downward in Fig. 8). As a result, the second gear 2
The notch 29c of the third gear 29, which was in the position facing the third gear 6, is shifted, and the third gear 29 and the second gear 26 are therefore engaged.
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 part of the cam plate 29c, and the play arm 33 is rotated clockwise, so that the head stand 2 moves further forward to perform playback or playback. This is the recording position. From this state, the stop lever 45
When the solenoid 31 is energized again by pressing , the engagement between the lock arm 30 and the cam teeth 29b is released, and the play arm 33 is now rotated slightly by the roller 33a. As a result, the third gear 29 is engaged with the second gear 26, and the third gear 29 is rotated. Therefore, the roller 33a comes into contact with the small light portion of the cam plate 29c, and the play arm 33 is rotated counterclockwise to return the head stand 2 to the waiting position. Reference numeral 34 designates a fast-forwarding unit that is pivotally supported by the chassis 1, and 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 mounted on the upper end of a rotating shaft that is pivotally supported by the rapid-forwarding unit 34, and the gear 34a is selectively supported by the first and second flywheels 4 and 6 at the lower end of the rotating shaft. The rubber roller 34b is iron-bonded. Further, the fast-forwarding unit 34 has a protrusion 34c formed on the side thereof that supports 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 denotes a fast-forwarding arm that is supported on the tip of a fast-forwarding lever 47, which will be described later, and springs 36 and 37 are stretched between the chassis and the fast-forwarding unit 34.

Further, the fast-forward arm 35 is formed with an upright piece 35a that supports the tip of a rewind lever 48, which will be described later, and a hanging piece 35b that supports a bent portion 47c of the fast-forward lever 47. Reference numeral 38 designates a slide lever having one end 38a guided by a guide pin provided in the chassis 1 and the other end guide piece 38b guided by a groove (not shown) bored in the chassis. 34d, and a projecting piece 38d that abuts against the hanging piece 33b of the play arm 33.

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, causing the fast-forward unit 34 to rotate clockwise. Therefore, the rubber roller 34b comes into contact with the first flywheel 4, and the gear 34a is engaged with the gear 10a of the take-up roll stand 10, so that the take-up roll 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 moves to the rewind lever 48.
8, 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 36. Therefore, the rubber loaf 34b is brought into contact with the second flywheel 6, and the gear 34a is engaged with the gear 9a of the descendant loading 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 supported by a support pin ld of the chassis, one end is supported by a play lever 44 (described later), and the other end is supported by a set plate 2.
It faces into the notch 20b of 0.

Note that a counterclockwise rotational force is constantly applied to the lever arm 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 ld.

The pause lever 42 is engaged with and detachable from a pause lever lock plate 43 that is embedded in the chassis 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 lever 42c is engaged with the lock plate 43 and held in 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 43 returns to its original position. 44 is a play lever having two lock pieces 44a and 44a', and 45 is a stop lever that has a lock piece 45a and is guided by a guide groove 45b, and is always pushed forward (downward in the figure) by a spring 46. has been granted.

47 has a lock piece 47a and is guided by a guide groove 47b, a fast-forwarding lever, 48 a lock piece 48a
The rewind lever is guided by a guide groove 48b, and the tip of the discussion bar 48 and the tip of the fast forward lever 47 are loosely connected to an auxiliary lever 49.

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

Although not shown, each lever 42, 44, 47,
48 and 53 are supported between the chassis 1 and a guide plate (not shown) at the rear of 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 mounting piece 1h' bent downward on the side surface of the chassis 1.
Song interval detection lever supported by pin li provided in this gutter, 5
Reference numeral 7 designates a lock plate supported by a pin lj implanted in the mounting piece lh, and is constantly applied with a clockwise rotational force by a coiled spring 58 (FIG. 12). One end of the lock plate 57 is engaged with a protrusion 56a of the song interval detection lever 56, and the other end has a claw 57a that engages with one end 59a of a control plate 59 that controls rotation of the third lock plate 76, which will be described later. It is formed. Further, the lower tip 56b of the song interval detection lever 56 is in contact with one end of the control plate 59. This control plate 59 is applied with a spring force by a coiled spring 60 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 applied to the third lock plate 76. It is in contact. 11 and 12, the song interval detection lever 56 is rotated (rotated clockwise in FIG. 12).
(two-dot chain line)] Then, the lower tip 56b rotates the control plate 59 counterclockwise (FIG. 19) against the spring force of the coiled 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 (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
The pawl 57a of No. 7 and the control plate 59 are engaged and locked.
On the other hand, to release the lock, the protrusion 56a rotates the lock plate 57 counterclockwise against the spring force of the winding spring 58 by returning the song interval detection lever 56, and therefore the pawl 57a and the control plate 59 are separated. be done. Reference numeral 60 denotes an eject lever supported by a pin 11 provided on a mounting piece 1M bent downward on the side surface of the chassis 1, and 61 is supported on a pin lm provided on a mounting piece 1M. When the eject lever 60 is rotated (toward the right in Figs. 13 to 15) against the spring force of the spring 62 stretched between it and the mounting piece lk, the sub-eject lever The lever 61 is similarly rotated to the right against the spring force of the coiled spring 63 in contact with the protruding piece 6la of the eject lever 61.

By this rightward rotation, the engagement village 64a of the lid body 64 covering the cassette part, which was engaged with the copper part 61b, is disengaged.
The figure 64 is therefore opened. Also, eject lever 6
0, the lever 60 comes into contact with the auxiliary plate 65 attached to the head stand 2, moves the auxiliary plate 66 to the right, and thus returns the head stand 2 to its initial position. This makes the head stand. The protruding piece 7e of the pick plate 7 further protrudes from the lock elongated hole 2e of the head stand 2, and by the operation of one end of these pieces, the sub-clamp claw 7d is engaged with the lock elongated hole 2e, and the head stand 2
Rotate in the first position. 66 is a pin 1 provided on a mounting piece ln bent downward on the side surface of the chassis 1.
Auto repeat lever supported on 0' axis, 67 is the same〈
A spring 68 is stretched between the auto repeat lever 66 and the IJ beat lock plate 67, supported by a pin lp installed on the mounting piece ln, or a beat lock plate. 66a and the bent piece 67a of the IJ beat lock plate 67 act so as to be in constant contact with each other.

Reference numeral 69 is a beat slide lever that is interposed between the chassis 1 and the head stand 2 and is movable in the front and back direction (left and right in FIGS. 13 to 15), and is always pushed backward (rightward in the figures) by a spring 70. power is given.

A hanging piece 69a is formed on the right side of this repeat slide lever 68, and a locking punch 69b is installed 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 village '69b is engaged with the engagement recess 67b of the repeat lock plate 67, and the repeat slide lever 67 is rotated in the same direction.
9 is held in a moving state. On the other hand, auto repeat lever 6
6 is returned to the rear (to the right in the figure), the protruding piece 66a pushes the bent piece 67a, and the repeat lock plate 67 is rotated in the same direction as the auto repeat lever 66, so that the sub-joint recess 67b is inserted into the lock punch. Leave from 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 stop plate with one end pivotally supported on the chassis, and a pin 71a that is in contact with the extension piece 3d of the pinch low unit 3 described above is provided at the other end. ing.

A spring 72 is tensioned between the pin 71a and the chassis, and the pin 71a is always held on the extension piece 3.
It acts to support d. Furthermore, a tooth portion 71b that can mesh with the gear 10a of the take-up reel table 10 is formed on the top of the reel table stop plate 71. Therefore, when the eject lever 60 is operated now, the head stand 2 is moved backward, and the pinch loaf 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 are connected to the winding reel stand 10.
gear 10a to stop the rotation of the take-up reel table lo. Note that as another means for forcibly stopping the take-up roll table 10 when the ejector lever 60 is operated, the methods shown in FIGS. 17 and 18 can also be considered.

That is, the center part of the approximately dogleg-shaped winding roll stop plate 73 is pivotally supported by the above-mentioned support pin ld, and one end is always attached to the pin 2g of the head stage 2, and the end of the winding roll is connected to the winding roll. One machine is compatible with Kawako. Therefore, when the eject lever 60 is operated and the head stand 2 is pushed backward, the pin 2g rotates the reel stand stop plate 73 counterclockwise, and the tip of the reel stand 1 is rotated counterclockwise.
It is pressed against the gear 10a of 0. As a result, the rotation of the winding reel stand 10 is stopped. In addition, as another example,
As shown in FIG. 18, a part of the head stand lock plate 7 is extended to form a stop piece 7f, and an engaging protrusion 7g is formed at the tip thereof.
On the other hand, a plurality of vertical holes 10d are provided in the winding roll stand 10.

This allows the eject lever 60 to be operated to remove the cassette 8.
is removed and the head stand lock 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 surface of the winding reel stand 10, and finally the vertical hole 10d is filled with iron. Ru. Therefore, the rotation of the winding reel table 10 is stopped. In FIGS. 19 to 21, reference numerals 74, 75, and 76 denote first to 30th hook 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). ing.

The lock pieces 47a, 48a, and 53a formed on the fast forward lever 47, the rewind lever 48, and the recording lever 53 correspond to the first rotter plate 74, and the stop lever 45 and the lock pieces 53a correspond to each other on the second lock plate 75. One of each lock piece 45a and 44a formed on the lever 44 corresponds to each other,
Furthermore, other lock pieces 44a' formed on the play lever 44 correspond to the third lock plate 76, respectively. Further, the first lock plate 74 has a stepped portion 75a formed at an end adjacent to the second lock plate 75, corresponding to the stepped portion 76a of the third lock plate 76. Thus, the first lock plate 74 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 FIGS. 21A to 21E.

The third locking plate 76 has a fishing part 76b formed by an ascending face 760 and a vertical face 76Q extending from the rising face 760, and also has a fishing part 76b for the play lever 44.

The locking piece 44a' slides on the inclined surface 76b to lower the third locking plate 76, and has hooked portions 44a,' that are engaged with the vertical surface 76b2 after passing the inner surface 760. The second lock plate 75 has a rising slope 760, a steeply descending slope 750 connected thereto, and a gradual downward slope 75.
It has a vertical surface 75b4 connected to this, and a lowering amount control portion 75b formed by the locking piece 4 of the play lever 44.
4a is a protrusion 4 that is not mated with the descending amount control section 75b.
4a, is formed. The third lock plate 76 is also lowered by the amount of descent of the second lock plate 75 when the protrusion 44a of the lock piece 44a passes the top of the descending force control section 75b. Further, another descending force control section 75c is formed on the second lock plate 75. That is, the rising neck slope 75c
, and the descending slope surface 75c2 and vertical surface 7 connected thereto.
5c3, and the height of the top thereof is the same as the height to the top of the other descent amount control part 75b. The lock release piece 45a of the stop lever 45 is not engaged with the lowering amount control portion 75c,
A protrusion 45a is formed. 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 is attached to the fast forward lever 47 and the rewind lever 48. Corresponding to the hook pieces 47a and 48a,
It has a fishing part 74b formed by an upward slope 740, a downward slope 74Q connected thereto, and a vertical surface 74G, and the lock pieces 47a and 48a of the fast forward lever 47 and the rewind lever 48 have the above-mentioned upward slope. Slope 740, descending slope 7
A fishing portion 47a that contacts 4Q and is engaged with the vertical surface 74G,
, 48a. Further, the first lock plate 74 has a hooked portion 74c formed by the inclined surface 74c and a vertical surface 74c2 connected thereto, and the lock piece 53a of the recording lever 53 slides against the inclined surface 74c. vertical surface 7
4c2. 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 44a, lock piece 47a of fast-forward lever 47
A sloped portion 77a is provided at a portion corresponding to the lock piece 48a of the rewind lever 48 and the lock piece 53a of the recording lever 53, so that the slide lever 77 is moved by the spring force of the spring 78 no matter which lever is pressed. Move to the side that resisted. Note that the slide lever 77 has a side slope 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, S, is a power switch, S2 is a tire 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 slide lever 77 for switch control. S4 is a switch that is engaged when the fast forward lever 47 and rewind lever 48 are operated and the auxiliary lever 49 is moved. S5 is a switch that is closed when the second lock plate 75 is lowered. S6 is a switch that is closed when the second lock plate 75 is lowered. A switch that is opened when the slide lever 38 slides due to rotation of the arm 33, S7 is a switch that is closed when the repeat slide lever 69 slides, and S8 is a stop lever 45.
S9 is a switch that is closed when the slide lever 38 is slid.
S.

is a switch that is closed when the recording lever 53 is operated;
S... is a switch that is closed when the auxiliary lever 49 is moved; S, 2, S, 3 are remote control switches not shown in the mechanism diagram; S, 2 is a switch that is closed when performing a play operation; Reference numeral 4 indicates a switch that is closed when the stop operation is performed, reference numeral 4 indicates a memory switch not shown in the mechanical diagram, and reference numeral 5 indicates a counter switch that closes 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; M
S is a circuit for detecting intervals between songs, and A is an amplifier. Note 18
, 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 village 2f provided on its lower surface.
moves forward until it hits 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 loaf 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. 3 stops.

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 portions 44a, ′ of the lock piece 44a′ are engaged with the fishing portion 76b of the third lock plate 76.

Further, since the lock piece 44a pushes down the second lock plate 75, the switch located on the lower surface thereof is closed, and the slide lever 77 is further moved by the lock piece 44a, thereby closing the switch S3. Therefore, if the power switch S and timer switch S2 are 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 second set plate, and the third
The gear 29 is engaged with the second gear 26. Here motor 1
8 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 29
The rotation of the cam plate 29c causes the play arm 3 to rotate.
As a result, the play arm 33 rotates and separates from the control punch 2f of the head stand 2, so that the head stand 2 further advances until the stopper elongated hole 2d abuts the pin lb. On the other hand, since the front end edge 20d of the set plate 20 corresponds to the small diameter portion of the cam plate 29c,
Pulled by the spring 21, the extension piece 3d of the pinch loaf unit 3 is therefore separated from the protruding piece 20a.

As a result, the unit 3 is rotated and the pinch roller 3a
is pressed against the capstan 4a. When the set plate 20 is further pulled, the engagement protrusion 17d of the take-up unit 17 is restricted by the abutment rear end edge 20c.
is moved by the spring 17e following the supporting 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 winding roll stand 10. Therefore, since the take-up pulley 17b is rotated by the belt 19, the take-up reel table is rotated by one angle (FIG. 24). As described above, the rotation of the motor 8 rotates the winding reel table 10 and the capstan 4a, which is the rotating shaft of the first flywheel 4, and the amplifier A operates to reproduce the tape.

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 second lock plate 76 is further pushed down, and therefore the lock piece 44a' of the play lever 44 and the third lock plate 75 are pushed down.
The lever arm 4, which will be described later, is disengaged from the lock plate 76.
Returned by 0. Further, 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 it is pushed, opening the switch S6 and closing the switch S9. 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 gear 26 are engaged. As a result, the third gear 29 is approximately 1
Since it rotates 80 degrees, the play arm 33 returns to its original position. Therefore, the play arm 33 comes into contact with the control village 2f, and the head stand 2 is returned to the intermediate position. On the other hand, set plate 20
is pulled against the spring force of the spring 21, so that the abutting rear edge 20c holds the take-up unit 7 against the spring 1.
It is returned to its original state against the spring force of 7e. Therefore, since the rotating shaft 17c separates from the rubber roller 10b of the take-up roll stand 10, the rotation of the take-up roll stand 10 is stopped. Further, when the set plate 20 is pulled, the projecting piece 20a pushes the extension piece 3d of the pinch loaf unit 3, so that the unit 3 is rotated and the pinch roller 3a is separated from the capstan 4a. As mentioned above, the winding reel stand 1
0 stops rotating. , the pinch roller 3a separates from the capstan 4a, and 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 8 and amplifier A is also cut off. Next, when the eject lever 60 is pulled, the sub-eject lever 61 is rotated at the same time as the head stand 2 finishes retracting, and the engagement between the fishing part 61b and the engagement groove 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 project. Recording operation With the cassette 8 loaded in the head stand 2, press the recording lever 5.
3, the fishing part 53a. of the lock piece 53a is pressed. is engaged with the gold phrase part 74c of the first lock plate 74.

When the recording lever 53 is pressed, the switch S,. 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, since the motor 8 operates and the solenoid 31 is energized, the head stand 2 moves further 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 pressed against the capstan 4a.
Further, the rotating shaft 17c is connected to the rubber roller 10 of the winding roll stand 10.
Support b. Therefore, the tape runs, and recording begins (FIG. 24). Note that the play lever 44 is pulled by the arm lever 40 and engaged with the third lock plate 76. When the fast-forwarding lever 47 is pushed with the fast-forwarding operation cassette 8 loaded on the head stand 2, the locking piece 47a is engaged with the fishing portion 74b of the first locking plate 74.

Further, when the table feed lever 47 is pushed, the fast feed arm 35 moves and the hanging piece 35b is in contact with the bent portion 47c, so the fast feed arm 35 pushes the protruding piece 34c of the fast feed unit 34. As a result, the fast-forwarding unit 34 rotates, and its gear 34a is connected to the gear 10a of the winding roll 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 winding reel table 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 discussion bar 47 returns to its original state. Therefore, the fast-forwarding arm 35 also returns to its original state, so the fast-forwarding unit 34 also returns, the gears 34a and 10a are disengaged, and the rubber roller 34b also separates from the first flywheel 4. Also, the slide lever 77 returns to switch S3.
is opened and becomes a stop state. When the rewind lever 48 is pushed with the rewind operation cassette 8 loaded on the head stand 2, the lock piece 48a is engaged with the hook portion 74b of the first lock 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 the gear 34a and the fast forward arm 35 are rotated. The gear 9a of the groove reel stand 9 is engaged with the gear 9a. 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 combined reel stand 9 is rotated at the reverse speed (FIG. 26). Also, when the stop lever 45 is pressed, the second
Since the lock plate 75 is lowered, 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 feed arm 35 also returns to return the fast feed 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 also returns and the switch S3 is opened to enter the stop state. Auto stop operation during play or recording operation As mentioned above, during play or recording operation, the head stand 2 moves forward to the new position and the winding reel stand 1 moves forward.
0 is rotating, the first and second arms 1 for end detection
4 and 15 are provided with rotational force in the same rotational direction as the winding roll table 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 the tip of the auto-stop lever 32 engages with the eccentric circular groove 25a of the first gear 25.
It is pressed against the outer circumference of the On the other hand, the first gear 25 is engaged 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 in contact with the outer peripheral 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 rotation of the winding reel table 10 stops, the external force that was pressing the engagement protrusion 32b against the outer circumferential wall disappears, so that the engagement protrusion 32b is moved to After passing through, its trajectory will be held in place. Since the protrusion 25c is located on this trajectory, the first gear 25
By the rotation of , it is engaged with the mating 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. Further, after the engagement protrusion 32b and the protrusion 25c are engaged, the first gear 25
As the shoulder 32c of the auto stop lever 32 rotates, the shoulder 32c of the auto stop lever 32
comes into contact with the release protrusion 25d of the first gear 25, and the engagement protrusion 3
2b 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 winding reel stand 1 is rotating at high speed in the same direction as in the play state.

Therefore, the engaging protrusion 32b is connected to 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 winding 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 and recording, so a description thereof will be omitted. .
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 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 with the engagement protrusion 32b in pressure contact with the cam stand 25b. Then, when the rotation of the winding reel table 10 stops, the engagement protrusion 32b is moved to the narrowest groove part 25a.
, 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 engagement 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 and recording As described above, during play and record, the head stand 2 is in the recording/reproducing position and the winding 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 roll stand 10, and the rotation of the take-up roll stand 10 is stopped. That is, the state is the same as when the tape has stopped running in the play and record states described above, but here, the biasing arm 22 is rotated by the spring force of the spring 23, and the control lever 2 is rotated.
Rotate 4. 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
Loosen it against the outer peripheral wall of a. As a result, while the first gear 25 is rotating, the engagement protrusion 35b 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 During fast forwarding or rewinding, the head stand 2 is in an intermediate position and the winding 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 29 is in contact with the set plate 20 and the biasing lever 22, both levers 20 and 22 are not affected in any way, so the biasing lever 22 is 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 winding roll stand 10 and the gear 10a, and the rubber roller 34b is moved against the first flywheel 4. Press it against the

When the fast forward lever 47 is pressed, the switch S9 is closed via the slide lever 38, and the switches S, . is closed, so the solenoid 31 is energized. As a result, the cam plate 29c is rotated, 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 winding wheel stand 10 is moved away from the pinch roller 3a.
move away from Therefore, the winding roll table is rotated at high speed until it reaches a fast-forward 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 the set plate 20 does not allow the lever arm to be rotated four degrees, so the play lever 44 is never returned. When the fast-forwarding lever 47 is released, the fast-forwarding arm 35 returns, the fast-forwarding unit 34 also returns, the gear 34a is disengaged from the gear 10a of the winding roll table 10, and the rubber roller 34b is separated from the first flywheel 4. The fast forward state 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 S5 is closed because the second lock plate 75 is lowered, and switch S3 is closed because the second lock plate 75 is lowered), and switch S3 is closed because the second lock plate 75 is lowered.
7 is moving, 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 moved to the winding position. Reel stand 10
This is supported by the rubber roller 10a. Therefore, it returns to the blur 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. Therefore, the gear 34a and the gear 9a of the supply reel stand 9 do not mesh with each other.

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.
、． is closed (switch S9 is closed by the slide lever 38), so the solenoid 31 is energized. As a result, the head stand 2 returns to the intermediate position at the same time 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 winding reel stand 10. Also, when the play arm 33 is rotated, the protrusion 34 of the fast-forwarding unit 34 is rotated.
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 Tosonsha reel stand 9 are engaged, and the rubber roller 34b is pressed against the second flywheel 6, resulting in a rewinding state. Then, when you release your hand from the rewind lever 48,
The fast feed arm 35 and the fast feed unit 34 return to their original states, the gear 34a and the gear 9a of the supply reel stand 9 are disengaged, and the rubber roller 34b is moved to the second flywheel 6.
The rewind state is released when the distance is further away.

Thereafter, the player returns to the playing 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.
The lock piece 48 is controlled by
a 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 tenth check plate 74, respectively, for the same reason as 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 edited by simply 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 green repeat nor fast forward or rewind is in progress, 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 is rotated. The fast forwarding unit 34 is rotated through the fast forwarding unit 34. Therefore, Gya 34
a is engaged 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 all of the tape has been rewound and the rotation of the winding reel table 10 has stopped, 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 this is the intermediate position, the switches S4 and S6 are closed, and the stop lever 45 is pulled and the second lock plate 75 is lowered to close the switch, so that the solenoid 31 is energized. Therefore, 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 the pinch roller 3a
and the capstan 4a are compressed, and the rotating shaft 17c and the rubber roller 10a of the winding roll table 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 table feeding unit 34, rotates the rapid feeding unit 34 a little, and releases the meshing between the gear 34a and the gear 9a of the supply reel stand 9, and the rubber roller 34b and the third 2 flywheel 6
Let go of. Therefore, it becomes a play state. Note that when the set plate 20 moves forward, the bar arm 40 is rotated, and the play lever 44 is therefore 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 winding reel table 10 is stopped, the auto-stop operation described above is activated and the play arm 33 is rotated.

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 compressed and put into an unwound state. Similarly to the above-mentioned operation, when only the winding 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 the same operation as during the play operation described above.

When the recording is completed and the rotation of the winding 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 above-described play operation. 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 control bar 45 is pressed, the switch S8 is closed (the switch S7 is closed because the auto repeat lever 66 is locked, and the switch S9 is closed because the play arm 33 is rotated clockwise and the slide lever 38 is moved forward). Therefore, the solenoid 311 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 separates from the capstan 4a, and the rotating shaft 17c separates from the take-up roll stand 10. . Further, the rotation of the play arm 33 causes the slide lever 38 to retreat and release the restriction on the fast feed unit 34, so that the fast feed unit 34 rotates and the gear 34a is engaged with the gear on the supply reel stand 9.
The rubber roller 34b is pressed against the second flywheel 6. Therefore, it becomes a rewinding state. To switch from the rewind state to the play state, press the stop lever 45 again.
Since the switch S is closed and the head stand 2 is in the intermediate position, switches S4 and S6 are closed, and furthermore, due to the locked state of the auto repeat lever 66, the switch S7 is closed.
Since solenoid 31 is open, 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 fishing portion 74b.

Also, as the fast forwarding lever 47 moves forward, the slide lever 38
moves forward, switch S9 is closed, and auxiliary lever 49
also move forward and switch S, . is closed, so the solenoid 31 is energized. Therefore, the head stand 2 is moved back 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 winding reel stand 10, respectively. Since the fast-forward lever 47 is pressed, the fast-forward arm 35 moves and pushes the protrusion 34c of the fast-forward unit 34 to rotate the fast-forward unit 34. Therefore, the gear 34a is meshed with the gear 10a of the winding roll table 10, and the rubber roller 3
4b is brought into pressure contact with the first flywheel 4 and fast-forwarded, resulting in a pillow state. If the stop lever 45 is pressed in this fast-forward 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 coil 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 claw of the lock plate 57. 57a is initially in contact with the control plate 59, but as the control plate 59 rotates, one end of the control plate 59 is positioned above the pawl 57a, and the spring force of the coil spring 58 causes the pawl 57a of the lock plate 57 to and the control plate 59 are engaged and locked. Further, the switch Ps is turned on by rotating the song interval detection lever 56. Next, when the play lever 44 is operated, the tape enters a playback state and starts running. At this time, since the third lock plate is pushed down by the control plate 59, the play lever 44 is not locked and is held in the operating state only by the lever arms 4. In this playback state, for example, the rewind lever 48
When operated, the control bar 48 is locked to the first locking plate 74 and shifts from the playback state to the winding state. Since the song interval detection lever 56 and the rewind lever 48 are operating, the song interval detection circuit MS works and when a song interval (no signal period) on the tape is detected, the play lever 44 moves the lever arm 40.
is pulled in, lifts the second lock plate 75, and locks the first lock plate 75.
The rewinding lever 48 locked to the lock plate 74 is released, the system shifts to the playback state, and the desired recorded portion is played back.
Rapid forwarding can also be performed in the same manner. Close the recording timer operation power switch S, and lock the recording lever 53.

When the timer switch S2 is closed in this state, the slide lever 77 has moved, so the switch S3
is closed, and since the recording lever 53 has moved, the switch S,. 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 above-described recording operation, the tape reaches the end, and is stopped by the auto-stop operation. The play timer operation power switch S 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
, the play lever 44 is pushed again and the second lock plate 75
Since the head is lowered, the switch S5 is closed, and since the head stand 2 is in the intermediate position, the switches S4 and S6 are closed. Therefore, play is started by an operation similar to the play operation described above, and when the tape ends, the tape is stopped by an auto-stop operation. Remote Control Operation Mechanism When a remote control switch S, 2 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 edge resetting state or in the fast forwarding or rewinding state, neither the supply reel stand 9 nor the take-up reel stand rotates, and the auto-stop operation is activated. To operate the remote control, first lock the song interval detection lever 56 and press the third lock plate 76.
Let it fall. Then, when the stop lever 45 is pulled by the auto-stop operation and the switch S5 is closed (since the head stand 2 is in the intermediate position at this time, the switches S4 and S6 are also closed), the solenoid 31 is energized. Therefore, the play arm 33 rotates, the head stand 2 advances to the recording/playback position, the set plate 20 is pulled forward, and the pinch roller 3a is moved to the capstan 4.
a, and the rotating shaft 17c is supported by the rubber roller 1ob of the winding roll table 10. Therefore, it becomes a play state,
And the play lever 44 is pulled by the lever arm 40. However, since the third lock plate 76 is lowered by the time-song interval detection lever 56. The lock piece 44a' and the third lock plate 76 are not engaged with each other. Therefore, the play lever 44 remains pulled only by the arm lever 40. Then, when remote control switch S, 3 is closed,
Even if the IJ control switches S and 2 are opened, the play state is maintained, so S3 is closed. Therefore, since the solenoid 31 is energized, 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 arm lever 40 returns the play lever 44 to its original state. Then, when the IJ control switch S, 2 is closed again, the play state is resumed by the above-described operation. Memory operating mechanism Press memory switch S, 4, 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 it is desired to open the playback section again, the stop lever 45 is operated to perform the above-described stop operation to bring the playback to a stop state. Next, the rewind lever 48 is locked and the tape is rewound by the above-described rewinding operation.
When the counter 11 is reversed and reaches 999, the counter switch S,5 is closed, and the bar 77 is slid.
is moved and the switch S3 is closed, and the head stand 2 is in the intermediate position and the switch S6 is closed, so the solenoid 31 is energized. As a result, 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 is pressed against the capstan 4a.
The rotating shaft 17c is supported by the rubber roller lob of the winding roll stand 10. Therefore, the play state is entered, and the play lever 44 is moved forward by the bar arm 401 and locked. Note that the rewind lever 48 is unlocked. Ejection operation during rotation of the take-up roll stand 1
0 is rotated by the driving force of the motor, that is, during recording, play, or fast-forwarding,
0, the head stand 2 is moved back to the final position and the cassette 8 is ejected from the reel stands 9 and 10. However, in this state, the winding reel stand 10 continues to rotate due to the driving force of the motor, so the device continues to operate. Therefore, when the eject lever 60 is operated as shown in FIGS. 16 to 18, the take-up reel stand 10 is forcibly stopped.
The dead end is stopped by the auto-stop operation described above. In other words, the embodiment shown in FIG. 16 is a pinch loaf unit 3.
17 due to the retreat of the head stand 2, and FIG. 18 due to the ejection of the cassette 8, respectively.
0 is stopped. 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 switches S and 3 are operated.

Therefore, the above manual repeat operation can be performed remotely. As described above, the present invention forms an eccentric circular groove having a narrow groove on a rotary plate that rotates irrespective of the rotation of the reel stand, and also provides a protrusion on the same 0 circle of the narrow groove, and also provides a take-up reel stand. A crescent-shaped engagement protrusion is provided on the auto-stop lever to which rotational force is applied, and this engagement protrusion is engaged with the protrusion when the winding roll table is stopped, and when the auto-stop lever is pulled, Since the device stops, the auto-stop operation is reliable.In particular, since the engaging protrusion is crescent-shaped, the engagement with the protrusion is ensured, and the engagement between the engaging protrusion and the protrusion is auto-stop. When the lever is pulled, it is inevitably released by the release protrusion on the rotary plate, so there is an advantage that there is no need to use a special release member.

[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. A side view showing the locking mechanism of the magnetic head stand, FIG. 5 is a sectional view showing a part of the take-up reel stand and the auto-stop mechanism, and FIG. 6 is a bottom view showing a part of the take-up reel stand and 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 an operational diagram showing 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 the auto repeat operating lever. A side view of the auto repeat operating lever, Fig. 15 is an operational diagram of the eject operating lever and auto repeat operating lever, Fig. 16 is an operating diagram of the reel stand stop mechanism, and Fig. 17 is an operational diagram of the reel stand stop mechanism.
The figure is an operation diagram showing another embodiment of the reel stand stop mechanism.
FIG. 8 is an operational diagram showing another embodiment of the reel stand stop mechanism, FIG. 19 is a perspective view of the operating lever, FIGS. 20A to 20C are operational diagrams showing the relationship between the operating lever and the lock plate, and FIG.
Figures A to 21E are operation diagrams showing the relationship between each operating lever and the lock plate, Figure 22 is a circuit diagram, Figure 23 is an operation diagram at the intermediate position of the head stand, Figure 24 is a playing operation diagram, and Figure 25 The figure is a play pose operation diagram, Figure 26 is a rewind operation diagram,
FIG. 7 is a fast-forward operation diagram, and FIG. 28 is an auto-repeat operation diagram. 1... Chassis, 2... Head stand, 3... Pinch roller, 4... First flywheel, 6... Second flywheel, 7... Lock plate, 8... Cassette, 9...・
Supply reel stand, 10... Winding reel stand, 11.
...Counter, 14...1st for end detection
Arm, 15...Second arm for end detection, 17
...Take-up unit, 18...Motor,
20...Set plate, 22...Biasing arm, 24...Control lever, 25...First gear, 2
5a...Eccentric circular groove, 25c...Protrusion, 26...
...Second gear, 29...Third gear, 29b...Cam tooth, 29c...Cam plate, 30...Lock arm, 31...
...Solenoid, 32...Auto stop lever, 33...
...Play arm, 34...Fast forward unit, 35...Fast forward 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...Record lever, 56...Song interval detection lever, 57...Rotter plate, 59...Control board, 60...Eject lever, 61...Subject lever, 64...Lid body, 66...Auto repeat lever, 67...Repeat lock plate, 69...Repeat slide lever, 71 ...Reel stop plate. Fig. 1 Fig. 6 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18 Fig. 19 Fig. 204 Fig. 20 Fig. 20C Fig. 2lA Fig. 2 Old Fig. 2lC Fig. 210 Fig. 21E Fig. 22 Fig. 23 Fig. 24 Fig. 25 Fig. 26 Fig. Total 27 Fig. Figure 28

Claims (1)

[Claims] 1 A shoulder to which rotational force is applied in the rotational direction as the take-up reel base rotates, and an engagement protrusion that engages with a protrusion described later is provided at the tip, and that comes into contact with a release protrusion described later. an auto-stop lever provided with an auto-stop lever, which is constantly rotated by a motor, and has an eccentric circular groove formed on one side of which the engaging protrusion faces, and a cam base formed within the eccentric circular groove;
Further, a rotary plate having a protrusion located concentrically with the middle of the narrowest groove formed by the outer circumferential wall of the eccentric circular groove and the cam base, and a release protrusion provided in the center. When the rotation of the take-up reel stand stops, the engagement protrusion and the protrusion are engaged, and the auto-stop lever is pulled to be in the stopped state, and the shoulder of the auto-stop lever comes into contact with the release protrusion. A drive mechanism for a tape recorder, characterized in that the engagement between the engagement protrusions and the protrusions is released.