JPS5810778B2 - Tape recorder drive mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive mechanism for a tape recorder that has an improved lock plate for locking various operating levers. The object of the present invention is to provide a drive mechanism for a tape recorder in which other operating levers cannot be locked.

A second object of the present invention is to provide a drive mechanism for a tape recorder that is composed of three lock plates and that prevents the play lever from being locked when the song interval detection lever is operated.

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 1a and a stopper pin 1b (this pin 1b also serves as positioning of the cassette) on the chassis 1, and has an erase head, a lab recording/reproducing head, 2b is attached.

The head stand has a guide slot 2c through which the pin 1a is inserted, a guide slot 2cb through which the pin 1b is inserted, a stopper slot 2d through which the pin 1b is inserted, and an upright piece 7c of the lock plate 7 to be described later. A lock elongated hole 2e is bored therein.

Further, 1c is a pin for positioning the cassette.

Reference numeral 3 designates a pinch roller unit equipped with a pinch roller 3a, which is rotatably supported on a support pin 1d implanted in the chassis 1, and is moved by a spring 3b to the side of a capstan 4a, which will be described later. It is energizing.

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

6 is a second flywheel supported by a bearing (not shown) formed in the chassis 1; 7 is a second flywheel through which a pin 1e implanted on the back surface of the chassis 1 is inserted, and is applied an upward spring force by a spring 7a; With the head stand locking plate (Fig. 3.4) biased, the engaging portion 7b is engaged with the elongated hole 1f 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 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.

Therefore, when cassette 8 is set in diagram 4,
Since the protruding piece 7eli is pushed down by the cassette 8 against the spring force of the spring 7a, the engaging claw 7d disengages from the lock elongated hole 2e of the head stand 2, and the head stand 2 is moved by the spring (not shown). It moves forward, that is, to the right in FIGS. 3 and 4, and upward in FIG. 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 designates a take-up reel stand which is rotatably supported by a shaft (not shown) installed in the 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 which is rotatably supported by the shaft of the 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 protrusion 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 14,15.

Now, when the take-up reel stand 10 rotates, the spring 16
The first arm 14 is moved to the take-up reel stand 10 side, and the second arm 14 is moved to the take-up reel stand 10 side.
Since the arms 15 are pressed against the bearing 13 side, 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-stop lever 32, which will be described later.

Reference numeral 17 denotes a take-up unit, one end of which has a lever 17a that is pivotally supported by the chassis 1, and a take-up boot IJ 17b that is roughly supported by the center shaft.

The rotation shaft 17c of the pick-up pulley 17b projects from the lever 17a and can come into sliding contact with the rubber roller 10b of the take-up IJ roll table 10 described above.

Further, at the tip of the take-up lever 17a, there is formed an engagement protrusion 17dbi that comes into contact with the abutment front edge 20c of the set plate 20, which will be described later. The lever 17a is rotated clockwise.

That is, the part 318 that presses the engagement protrusion 17d toward the abutting front edge 20c of the set plate 20 is a motor;
The belt 11 is wound around the pulley 18 via the take-up pulley 17b, 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.
and a notch 2 into which one end of the lever arm described later is inserted.
0b, a front abutting edge 20c always in contact with the engagement protrusion 17d of the above-mentioned pick-up unit 17, and a rear abutting edge 20d always in contact with a cam plate 29c, which will be described later.

Note that this set plate 20 is always biased forward by a spring 21.

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 supported by a shaft installed in the chassis 1 that supports a first gear 25, which will be described later, and one end of which is connected to a hanging piece when the biasing arm 22 is rotated counterclockwise. 22a and is rotated clockwise, and at this time, the other end abuts the auto-stop lever 32 and rotates the lever 32 counterclockwise.

25 is the first gear bearing on the chassis 1.

As shown in the rear view of FIG. 9, an eccentric circular groove 25a is formed on the lower surface thereof, and a cam base 25b and a protrusion 25c are formed approximately at the center of the eccentric circular groove 25a.

The protrusion 25c is connected to the eccentric cam base 25b and the eccentric circular groove 2.5.
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 a.

26 is a rotating shaft 27 of a pulley 27 bearing on the chassis 1
The second gear is fixed to a and is meshed with the first gear 25.

Note that a belt 28 is wound around the pulley 27 and a boob IJ 4 b provided on the rotating shaft of the first flywheel 4 .

Accordingly, the first flywheel 4 is rotated by the sixth second gear;
The first gear 25 is rotated via 26.

29 is a third gear that is pivotally supported by the chassis 1 and meshes with the second gear 26, and 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.

A lock arm 30 is pivotally supported on the chassis 1 and is engaged with the cam teeth 29b, and the engagement is released 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 three-moon-shaped engagement protrusion 32bp formed at the tip faces into the eccentric circular groove 25a of the first gear 25.

Note that the first gear 2 is located at the tip of the auto stop lever 32.
A shoulder portion 32c that is engaged with the protrusion 25d of No. 5 is provided.

Then, in FIG. 9, when the take-up reel stand 10 rotates in the tape winding direction, that is, in the direction of the arrow.

The first arm 14 is connected to the take-up reel stand 1 by the resilient spring 16.
Since the first arm 14 is pressed against the zero side, 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 engaging protrusion 32b is connected to the eccentric circular groove 2 of the first gear 25.
It will be in a state along the outer peripheral wall of 5a.

Further, 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.

A rotational force is applied to the auto-stop lever 32 in the opposite direction to that described above, so that the retaining protrusion 32b is in a state along the outer peripheral wall of the cam base 25b.

Even in the above example, when the tape stops running and the take-up reel stand 10 stops rotating, the first arm 1
4 is in a free state, so the auto stop lever 32
The biasing force that had been applied to will also disappear.

Therefore, after the first gear 25 rotates and the engagement protrusion 32b passes through the narrowest groove portion 25a1, it is located on the trajectory thereof 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.

33 is a play arm whose substantially center portion is pivotally supported by the chassis 1, and a roller 33a is provided at one end.

This corresponds to the cam plate 29c of the third gear 29 described above.

Further, a spring 33cbs is stretched between the other end of the play arm 33 and the chassis 1, and applies a 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 the period state.

Then, when the play lever 44 (described later) is pressed, the solenoid 3
1 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 comes into contact with the set plate 20 (which is constantly pulled forward (downward in Fig. 1.7.8) by the spring 21). It is slightly rotated by the edge 20d.

As a result, the third gear 2, which was in a position opposite to the second gear 26,
9 is displaced, the third gear 29 and the second gear 26 are engaged, and the primary notch 29a is connected to the second gear 26.
The third gear 29 is rotated until it faces the .

When the gear 29 is rotated, the roller 33 of the play arm 33
The play arm 33 is rotated clockwise by contacting the large diameter portion of the cam plate 29c, and the head stand 2 is further advanced to the playback or recording position.

From this state, when the stop lever 45 is pressed and the solenoid 31 is energized again, the lock arm 30 and the cam teeth 2
The engagement with 9b is released, and the play arm 33 is now slightly rotated by the roller 33a.

As a result, the third gear 29 is brought into mesh with the second gear 26, and the third gear 29 is rotated.

Therefore, the roller 33a is brought into contact with the small diameter portion of the cam plate 29c, and the play arm 33 is rotated counterclockwise to rotate the head stand 29c.
This is to return it to its chronological position.

34 is a fast-forwarding unit pivoted on the chassis 1,
A gear 3 that selectively meshes with the gear 91 of the supply reel stand 9 or the gear 10a of the take-up reel stand 10 is provided on the upper surface thereof.
4a is provided.

Note that the gear 34a is fitted onto the upper end of the 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 and 6. A rubber roller 34b is fitted therein.

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 denotes 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 the chassis 1 and the fast-forwarding unit 34.

Further, the fast-forward arm 35 is formed with an upright piece 35a that comes into contact with the tip of a rewind lever 48, which will be described later, and a hanging piece 35b that comes into contact with a bent portion 47c of the fast-forward lever 47. One end 38a is guided by a guide pin provided in the chassis 1, and the other end guide piece 38b is guided by a groove (not shown) formed in the chassis 1. A slide lever is used, and the slide lever is brought into contact with the protrusion 34d of the fast-forwarding unit 34. and the hanging piece 3 of the play arm 33.
A protruding piece 38d that comes into contact with the protruding piece 3b is formed.

A spring force is always applied to the slide lever 38 toward the front (downward in the figure) by a spring 39.

When the fast-forward lever 47 is pressed, the fast-forward arm 3
5, the hanging piece 35b is the bent part 47 of the fast forward lever 47.
Move forward while in contact with c.

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 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 36.

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 denotes a lever arm whose approximately center part is pivotally supported by a support pin 1d of the chassis 1, and one end of which is a play lever 44, which will be described later.
The other end is supported by the notch 20b of the set plate 20.
It is coming within.

Note that the lever arm 40 is constantly applied with a counterclockwise rotational force by a spring 41.

Reference numeral 42 designates a pose 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 can be engaged with and detached 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 town board 4
3 is engaged with the protrusion 42c and held in a pressed state, and when pressed again, the engagement between the lock plate 43 and the protrusion 42c is disengaged 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 lever 48 and the tip of the fast forward lever 47 are in contact with an auxiliary lever 49.

A 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 is a recording lever having 177 pieces 53a and guided by a guide groove 53b.

A spring force is always applied to the front (downward in the figure) by the spring 54.

Although not shown, each lever 42, 44, 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 track interval detection lever that is pivotally supported by a pin 11 implanted in the mounting piece 1h bent downward on the side surface of the chassis 1, and 57 is pivotally supported by a pin 1j implanted in the mounting piece 1h. A clockwise rotational force (as shown in FIG. 12) is constantly applied to the lock plate by a coiled spring 58.

One end of the lock plate 57 is engaged with a projecting piece 56a of the song interval detection lever 56, and the other end is a claw 5 that engages with one end 59a of a control plate 59 that controls the rotation of a 30th pick plate 76, which will be described later.
7a is formed.

Further, the lower end 56b of the song interval detection lever 56 is connected to the control plate 59.
is in contact with one end of the

This control plate 59 is moved clockwise (19th
), that is, one end is the lower tip 5 of the song interval detection lever 56.
6b is applied with a spring force such that the other end is pressed against the third
It is in contact with the zero-touch plate 76.

11 and 12, the song interval detection lever 56 is rotated (rotated clockwise in FIG. 12, indicated by a 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, the lock plate 57 moves along the protrusion 56a 63, so that the spring force of the coiled spring 58 applies a clockwise rotational force (FIG. 19).

Therefore, the pawl 57a of the lock plate 57 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, so the spring force of the one-turn spring 58 Accordingly, the claw 57a of the lock plate 57 and the control plate 59 are engaged and linked.

On the other hand, to release the lock, the protrusion 56a wraps around the lock plate 57 and rotates counterclockwise against the spring force of the spring 58, and the pawl 57a and the control plate 59 are separated from each other. be done.

Reference numeral 60 denotes an eject lever that is pivotally supported on a pin 11 planted in a mounting piece 1k bent downward on the side surface of the chassis 1, and 61 is a sub that is pivotally supported on a pin 1m that is also planted on the mounting piece 1k. 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 the mounting piece 1 and the eject lever 60, the sub-eject lever 61 protrusion 61
a and against the spring force of the winding spring 63, the lever 61
is also rotated to the right.

This rotation to the right causes the engagement rod 64a of the lid 64 that covers the cassette portion, which had been engaged with the hook portion 61b, to disengage.

Therefore, the lid 64 is opened.

Further, as the eject lever 60 rotates, the lever 6
0 comes into contact with the auxiliary plate 65 attached to the head stand 2, moves the auxiliary plate 65 to the right, and thus 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 rank slot 2e of the head stand 2, and by the operation of one end of these pieces, the engaging claw 7d is engaged with the lock slot 2e, and the head stand 2 is first Link at the location.

Reference numeral 66 denotes an auto-repeat lever pivotally supported by a pin 10 planted in a mounting piece 1n bent downward on the side surface of the chassis 1, and 67 a pin 1 also planted in the mounting piece 1n.
A spring 68 is stretched between the auto repeat lever 66 and the repeat lock plate 67, and the protruding piece 66a of the auto repeat lever 66 and the bent piece of the repeat lock plate 67 67a are always in contact with each other.

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

A right or hanging piece 69a of this repeat slide lever 6B is formed, and a lock rod 69b is implanted therein.

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 rotated.
to keep it moving.

On the other hand, when the auto-repeat lever 66 is returned to the rear (to the right in the figure), 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, and the engaging recess is rotated. 67b is lock rod 69b
More detached.

As a result, the repeat slide lever 69 is moved by the spring 7.
0 moves it to the right and returns to its original position.

In FIG. 16, reference numeral 71 denotes a substantially F-shaped reel stand stop plate with one end pivotally supported on the chassis 1, and a pin 71a at the other end that comes into contact with the extension piece 3d of the pinch roller unit 3 described above.
is provided.

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, if you operate the eject lever 60 now, the head stand 2
is moved backward, and the pinch roller unit 3 is rotated clockwise, so that the pin 71 is rotated by the extension piece 3d of the unit 3.
a is pressed.

Therefore, the teeth 71b of the reel stand stop plate 71 are engaged with the gear 10a of the take-up reel stand 10, and the rotation of the take-up reel stand 10 is stopped.

Note that another means for forcibly stopping the take-up reel stand 10 when the eject lever 60 is operated is No. 17.
The one shown in Figure 18 is also considered.

That is, a substantially dogleg-shaped reel stand stop plate 73 is pivotally supported at its center by the above-mentioned support pin 1d, and 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 10. It corresponds to

Therefore, when the eject lever 60 is operated and the head stand 2 is moved back, the pin 2g rotates the reel stand stop plate 73 in the counterclockwise direction, and the tip thereof is pressed into contact with 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 engaging protrusion 7g is provided at the tip of the stop piece 7f.
A plurality of vertical holes 10d are provided in the.

This allows the eject lever 60 to be operated to eject 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 back surface of the take-up reel stand 10, and is finally fitted into the vertical hole 10d.

Therefore, the rotation of the take-up reel stand 10 is stopped.

In FIGS. 19 to 21, reference numerals 74, 75, and 76 denote first to 30th board plates respectively supported by a shaft 77 pivotally connected to the chassis 1, and each of which is held in a horizontal state by a coil spring (not shown). There is.

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 tenth pick plate 74, and the stop lever 45 and the play lever correspond to the tenth pick plate 75. One of the lock pieces 45a and 44a formed on the play lever 44 corresponds to the other, and another lock piece 44a' formed on the play lever 44 corresponds to the 30th lock plate 76, respectively.

Further, the 10th pick plate 74 has a stepped portion 75a formed at the end adjacent to the 20th pick plate 75, corresponding to the stepped portion 76a of the 30th pick plate 76.

Thus, the 20th lock plate 74 lowers independently, but when the 20th lock plate 75 descends, it lowers the 10th lock plate 74 and also lowers the 30th lock plate 76.

However, the steps 75a and 7 of the second and 30th pick plates 75 and 76
Since a gap is formed in 6a from the beginning, the 30th pick plate 76 is lowered midway through the descent of the 20th pick plate 75.

Next, the shapes of each lock plate and each corresponding lock piece will be explained with reference to FIGS. 21A-E.

The 30th lock plate 76 has a hook portion 76b formed by an upwardly inclined surface 76b1 and a vertical surface 76b2 connected thereto, and the locking piece 44a' of the play lever 44 slides into contact with the inclined surface 76b. 7, the 30th hook 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 20th pick plate 75 has an upward slope 75b1, a steeply downward slope 75b2 connected thereto, and a gently downward slope 75b3.
and a vertical surface 75b4 connected thereto, the lock piece 44a of the pre-lever 44 has a protrusion 44a1 that is not engaged with the descending amount control part 75b. ing.

When the protrusion 44a163 of the lock piece 44a passes the top of the lowering amount control section 75b, the 30th lock plate 76 is also lowered by the lowering amount of the 20th lock plate 75.3 Also, the 20th lock plate 75 has another A descending amount control section 75c is formed.

That is, the ascending inclined surface 75c1 and the descending inclined surface 7 connected thereto.
5c2 and a vertical surface 75C3, 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 formed with a protrusion 45a1 that is not engaged with the lowering amount control section 75c.

When the lock release piece 45a passes the top, the 10th lock plate 74 and the 30th lock plate 76 are also lowered, and if they have been locked, they are released.

The tenth pick plate 74 is a fast forward lever 47 and a rewind lever 4.
Corresponding to the lock pieces 47a and 48a of No.8.

An ascending slope 74b1 and a descending slope 74b connected thereto
2 and a vertical surface 74b3.
, and one of the fast forward lever 47 and the rewind lever 48
The 79 pieces 47a and 48a have hook portions 47al and 48a1 that slide on the upwardly inclined surface 74b1 and the downwardly inclined surface 74b2 and are engaged with the vertical surface 74b3.

Further, the tenth hook plate 74 has a hook portion 74c formed by the above-mentioned inclined surface 74c1 and a vertical surface 74c2 connected thereto.
The lock piece 53a of the recording lever 53 has a hook portion 53al that slides on the inclined surface 74c1 and engages 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 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 even when the above-mentioned levers are pushed, the slide lever 77 is moved by the spring force of the spring 78. Move in the direction that resists.

Note that the slide lever 77 is arranged so as to face an inclined surface 77a.

When the recording lever 53 is operated while another operating lever is being operated.
A known recording lever blocking plate (not shown) that prevents operation of the
is provided.

FIG. 22 shows a circuit diagram, where SL is a power switch, S2 is a timer switch that is normally open when the timer is not operated, and remains open until the set time is reached when the timer is operated;
S3 is a switch that is closed when the switch control slide lever 77 slides, S4 is a switch that is opened when the fast forward lever 47 and rewind lever 48 are operated and the auxiliary lever 49 is moved, and S5 is a switch that is opened when the auxiliary lever 49 is moved. The switch that is then closed, S6, is the play arm 3
The switch % is opened when the slide lever 38 slides by the rotation of 3. S7 is the switch that is closed when the repeat slide lever 69 slides, S8
is a switch that is closed when the stop lever 45 is operated, S is a switch that is closed when the slide lever 38 is slid, SIO is a switch that is closed when the recording lever 53 is operated, and S11 is a switch that is closed when the auxiliary lever 49 is moved. Switch that closes when
3 is a remote control switch that is not shown in the mechanism diagram in the figure. % S1□ is a switch that is closed when performing a play operation, and S13 is a switch that is closed when a stop operation is performed.

S14 is a memory switch not shown in the mechanism diagram.

S15 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 18.31 is the above-mentioned motor and solenoid.

Next, the operation will be explained based on the above-mentioned configuration.Play operation First, when the cassette 8 is placed on the head stand 2, the lock plate 7
Since the protruding piece 7 is pressed downward, the engaging claw 7d and the tank 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.
6 (moves forward until it abuts the play arm 33).

In that state, the heads 2a and 2b of the head stand 2
is slightly inserted into the window of cassette 8.

On the other hand, when the head stand 2 moves forward, the protruding piece 3c of the pinch roller unit 3 is unscrewed, so the unit 3 is rotated by the spring 3b, and the extension piece 3d is attached to the set plate 20.
The unit 3 comes into contact with the protruding piece 20a of the unit 3, thereby stopping the unit 3.

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 pressed in this state, the hook portion 44a1' of the lock piece 44a' is moved to the hook portion 7 of the 30th pick plate 76.
6b.

Further, since the lock piece 44a pushes down the 20th pick plate 75, the switch S5 located on the lower surface thereof is closed, and the slide lever 77 is moved by the lock piece 44a to close the switch S3.

Accordingly, the power switch S1 and 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
Since the gear 26 is rotated, the third gear 29 is rotated approximately 180 degrees.

The rotation of the third gear 29 causes the large diameter portion 6i of the cam plate 29c to
This corresponds to the roller 33a of the play arm 33, whereby the play arm 33 rotates and separates from the control rod 2f of the 671 unit 2.

Therefore, the head stand 2 moves further forward until the stopper elongated hole 2d contacts the pin 1b.

On the other hand, the set plate 20 is pulled by the spring 21 because the contact front edge 20d corresponds to the small diameter part of the cam plate 29c, and therefore the extension piece 3d of the pinch roller unit 3 is pulled by the spring 21.
is 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 take-up unit 1 is regulated by the abutment rear end edge 20c.
The engaging protrusion 17d of No. 7 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 17b is rotated by the belt 19, the take-up reel stand 10 is rotated (second
Figure 4).

As described above, the rotation of the motor 18 causes the take-up reel stand 10. The tape is played back by rotating the capstan 4abS, which is the rotating shaft of the first flywheel 4, and by operating the amplifier A.

When the stop lever 45 is pushed down from the play operation, the 20th pick plate 75 is pushed down by the lock release piece 45a, so the 20th pick plate 76 is further pushed down, and therefore the play lever 44 is pushed down.
The engagement between the lock piece 44a' and the 30th lock plate 76 is released, and the lever arm 40, which will be described later, returns to its original position.

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 that is in contact with it is pushed, and the switch S6
is opened and 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 gear 26 are engaged.

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 33bS contacts the control rod 2f and returns the head stand 2 to the intermediate position.

On the other hand, since the set plate 20 is pulled against the spring force of the spring 21, the contact rear edge 20c returns the pickup unit 7 to its original state against the spring force of the spring 17e.

Therefore, the rotating shaft 17c is the rubber roller 1 of the take-up reel stand 10.
Since it is separated from 0b, 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 eject lever 60 is pulled, the sub-eject lever 61 is rotated at the same time as the head stand 2 finishes retreating, 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, and when the end face of the lock elongated hole 2e passes, it faces into the elongated hole 2e, so the eject lever 60 is released. The engaging claw 7d and the elongated hole 2e are engaged with each other.

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 tenth lock plate 74.

When the recording lever 53 is pressed, the switch SIO is closed and a recording circuit (not shown) is activated.

Further, the lock piece 53 a 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 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 pressed against the capstan 4a. .

Further, the rotating shaft 17c is the rubber roller 10 of the take-up reel stand 10.
b.

Therefore, since the tape runs, recording starts (second
Figure 4).

Note that the play lever 44 is pulled by the arm lever 40 and engaged with the 30th pick plate 76.

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 tenth hook plate 74.

Further, when the fast-forward lever 47 is pushed, the fast-forward arm 35 moves and the hanging piece 35b is in contact with the bent part 47c, so the fast-forward arm 35 pushes the protruding piece 34c of the fast-forward unit 34, thereby causing the fast-forward unit 34 to rotate. The gear 34a is connected to 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 20th pick plate 75 is lowered, so the 10th pick plate 74 is also lowered.

As a result, the engagement between the fast-forwarding lever 47 and the tenth pick plate 74 is released, and the lever 47 returns to its original state.

Therefore, the fast-forward arm 35 also returns to its original state, so the fast-forward unit 34 also returns, the gear 34a and the gear 10a are disengaged, and the rubber roller 34b also separates from the first flywheel 4.

Further, the slide lever 77 also returns and the switch S3 is opened to enter the 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 tenth hook 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 Gear 9 of 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 rotated in reverse at the rotational speed (FIG. 26).

Further, when the stop lever 45 is pressed, the 20th pick plate 75 is lowered, so the 10th pick plate 74 is also lowered.

As a result, the engagement between the rewinding lever 48 and the tenth hook plate 74 is released, 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
has advanced to the recording/reproducing position and the take-up reel stand 10 is rotating, so the first and second arms 14, 15 for end detection are given rotational force in the same rotational direction as the take-up reel stand 10. There is.

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.
is pressed against the outer peripheral wall of the

On the other hand, the first gear 25 is meshed with a second gear 26, and the second gear 26 has a belt 28 between it and the first flywheel 4.
is wound, so the first gear 25 is rotating.

Therefore, when the engaging protrusion 32b is in pressure contact with the outer peripheral wall, the first
The gear 25 is rotated, and the engagement protrusion 32b and the protrusion 25c are not engaged.

When the entire 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 passes through the narrowest groove portion 25a1. , is held at its trajectory position.

Since the protrusion 25c is located on this trajectory, the first gear 2
5, the engagement protrusion 32b is engaged with 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.

Further, after the engagement protrusion 32b 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 32b and the protrusion 25c are disengaged, and therefore 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 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

When the rotation of the take-up reel stand 10 is stopped, the engaging protrusion 32b and the protrusion 25c are engaged with each other 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 remains in the intermediate position.

Switch S9 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.

When the rotation of the take-up reel stand 10 is stopped, the engagement protrusion 32b passes through the narrowest groove portion 25a1 and is then held at its trajectory position.

Since the protrusion 25c is located on this trajectory, the first gear 2
5, the engagement protrusion 32b is engaged 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 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 lever plate 43 and the set plate 20 is pushed to rotate the pick-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 ticket reel stand 10 stops.

That is, the state is the same as when the tape stopped running in the playing and recording states described above, but here, the biasing arm 22 is rotated by the spring force of the spring 23.
Rotate the control lever 24.

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 brought into contact with the outer peripheral wall of the eccentric circular groove 25a.

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 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 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, and therefore the biasing lever 22 is automatically stopped. No external force is applied to the lever 32.

That is, the auto-stop operation is performed by an operation similar to the auto-stop operation described above after the tape is wound or rewound.

queue behavior When the fast forward lever 47 is pressed in the play state.

The fast-forwarding unit 34 is rotated via the fast-forwarding arm 35, and the gear 34a is connected to the winding reel stand 10. The rubber roller 34b is brought into contact with the first flywheel 4 by meshing with the gear 10a.

When the fast forward lever 47 is pressed, the switch S is closed via the slide lever 38, and the switch S1 is closed via the auxiliary lever 49, so that 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 the rubber roller 10a of the take-up reel stand 1°. move away from

Therefore, the take-up IJ-roll table 10 is rotated at high speed and enters a fast-forwarding state.

Further, even if the 10th pick plate 74 is lowered, the 30th pick plate 76 is not lowered, so the play lever 44 is
remains locked.

Note that depending on the set plate 20, the lever arm 40
Since the play lever 44 is never rotated, the play lever 44 is never returned.

Then, when you release your hand from the fast-forward lever 47, the fast-forward arm 3
5 returns, the fast-forward unit 34 also returns, and the gear 34a and the gear 10.5 of the take-up reel stand 10 return. The rubber roller 34b is disengaged from the first flywheel 4, and the rubber roller 34b is separated from the first flywheel 4, thereby canceling the rapid feed state.

Also, as the fast forward lever 47 returns, the slide lever 38 and the auxiliary lever 49 return, so the switches S6 and 8
4 is closed (switch S5 is closed because the 20th pick plate 75 has been lowered, and switch S3 is closed because the 20th pick plate 75 is lowered).
7 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 moved to the winding position. It comes into contact with the rubber roller 10a of the reel stand 10.

Therefore, it returns to the playing state again.

review behavior When the rewind lever 48 is pressed in the play state.

The fast-forwarding arm 35 is rotated and pulls the fast-forwarding unit 34 via the spring 37, but at this time, the fast-forwarding unit 3
Since the protrusion 34d of No. 4 comes into contact with the stepped portion 38c of the slide lever 38, 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 S11 is closed by the auxiliary lever 49 (switch S
9 is closed by the slide lever 38), the solenoid 31 is energized.

As a result, the head stand 2 returns to the intermediate position similarly to 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, as the play arm 33 is rotated, the engagement between the protrusion 34d of the fast-forwarding unit 34 and the stepped portion 38c of the slide lever 38 is disengaged.

The rapid feed unit 34 rotates further, and the gear 34a and the gear 9a of the supply reel stand 9 are engaged with each other, and the rubber roller 3
4b is brought into pressure contact with the second flywheel 6 and enters 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, and the gear 3
4a and the gear 9a of the supply reel stand 9 are disengaged, the rubber roller 34b is separated from the second flywheel 6, and the rewinding state is released.

Thereafter, the player returns to the playing state again by the same operation as the cue operation.

quick review When the rewind lever 48 is pressed in the recording state.

Since the tenth pick plate 74 is lowered by the lock piece 48a, the recording lever 53 and the tenth pick 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 since the 20th pick plate 75 of the rewind lever 48 is lowered by the play lever 44, the lock piece 48a and the 10th pick plate 74 are not engaged with each other.

Also, in the cue and review operations described above, the fast forward lever 47 and the rewind lever 4 are
8 are not engaged with the tenth hook plate 74, respectively.

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 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 to rotate the fast-forwarding unit 34.

Therefore, the gear 34a 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 switch S4. is in the intermediate position. S6 is closed, and when the stop lever 45 is pulled and the 20th pick plate 75 is lowered, the switch 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 and the capstan 4a are pressed against each other, and the rotating shaft 17c and the take-up reel stand are brought into pressure contact. 10 rubber rollers 1
0a are brought into contact with each other.

Furthermore, since the slide lever 38 is advanced by the rotation of the play arm 33, the stepped portion 38c is
4, and rotates the fast-forwarding unit 34 a little to disengage the gear 34a and the gear 9a of the supply reel stand 9, and also to separate the rubber roller 34b and the second flywheel 6.

Therefore, it becomes a play state. When the set plate 20 moves forward, the lever arm 40 is rotated, and the play lever 44 is therefore pulled and locked by the 30th pick plate 76, so that it can be seen from the outside that the play operation is in progress.

When the play operation is completed and the rotation of the take-up reel stand 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, the fast-forwarding unit 34 is rotated, the gear 34a and the gear 9a of the supply reel stand 9 are engaged, 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 the same operation as 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 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 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 S9 is closed because the play arm 33 is rotated clockwise and the slide lever 38 is moved forward). ), so the solenoid 31 is energized.

Therefore, the play arm 33 is rotated, the head stand 2 is retreated to the intermediate position, and the set plate 20 is advanced, so that the pinch roller 3a is moved from the capstan 4a to the rotating shaft 1.
7c are separated from the take-up reel stand 10, respectively.

Also, due to the rotation of the play arm 33, the slide lever 3
8 retreats and releases the restriction on the fast forward unit 34,
The rapid feed unit 34 rotates so that the gear 34a is engaged with the gear of the supply reel stand 9, and the rubber roller 34b is pressed against the second flywheel 6.

Therefore, it becomes a rewinding state.

And to get into play mode rather than rewind mode.

When the stop lever 45 is pressed again, the switch S5 is closed, and since the head stand 2 is in the intermediate position, the switch S4. Since S6 is closed and the auto repeat lever 66 is locked, the switch S7 is closed, so 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 while the auto repeat lever 66 is locked and a play operation is being performed, the lock piece 47a
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 S11 is closed, the solenoid 31 is energized.

Therefore, the head stand 2 retreats to the intermediate position by an action similar to when the stop lever 45 is pressed during the play operation in the auto-repeat operation described above, and the pinch roller 3a is moved from the capstan 4a, and the rotating shaft 17c is moved from the take-up reel stand. 1
Each departs from 0.

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 engaged with the gear 10a of the take-up reel stand 10, and the rubber roller 34b is engaged with the first flywheel 4.
They are pressed against each other and enter a fast-forwarding state.

If you press the stop lever 45 in this fast forward state,
A transition to a play operation is made 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 pawl 57a of the lock plate 57 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. The claw 57a of the lock plate 57 and the control plate 59 are engaged and locked.

In addition, the switch Ps is turned to O by the rotation of the song interval detection lever 56.
It becomes N.

Next, when the play lever 44 is operated, the tape enters a playback state and starts running.

At this time, since the 30th pick plate is pushed 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, if you operate the rewind lever 48 in this playback state,
The lever 48 is locked to the tenth pick plate 74 and shifts from the playback state to the rewind 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 4.
0, lifts up the 20th pick plate 75, releases the rewind lever 48 locked to the 10th pick plate 74, shifts to the playback state, and plays back the desired recorded portion.

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 since the recording lever 53 has moved, the switch S10 is closed, and since the head stand 2 is in the intermediate position, the switch S4. S6 is closed.

Therefore, recording is started by an operation similar to the recording operation described above, and when the tape reaches the end, the tape 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 20th pick plate 75 is closed.
is lowered, so the switch S5 is closed, and since the head stand 2 is in the intermediate position, the switch S4. S6 is 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 S12 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 neither in the re-recording state nor in the fast-forwarding or rewinding state, the supply reel stand 9 and the take-up reel stand 10 do not rotate, and the auto-stop operation is activated.

Before operating the remote control, the song interval detection lever 56 is locked and the 30th pick plate 76 is lowered.

Then, the stop lever 45 is stopped by the auto-stop operation.
is pulled and the switch S5 is closed (note that at this time, since the head stand 2 is in the intermediate position, the switch S4.
S6 is also closed), so the solenoid 31 is energized.

Therefore, the play arm 33 rotates, the head stand 2 moves forward to the recording/reproducing position, the set plate 20 is pulled forward and is pressed against the pinch roller 3a tri capstan 4a, and the rotating shaft 17c is connected to the rubber roller of the take-up reel stand 10. 10b.

Therefore, in the play state, the play lever 44 is pulled by the lever arm 40.

However, since the 30th pick plate 76 is lowered by the time and song interval detection lever 56, the pink piece 44a' and the 30th
It is not engaged with the pick plate 76.

Therefore, the play lever 44 remains pulled only by the arm lever 40.

Then, when the remote control switch 813 is closed, even if the remote control switch S12 is opened, it is still in the play state, so S3 is closed.

Therefore, the solenoid 31 is energized, so the head stand 2 returns to the intermediate position, and the pinch roller 3a is moved to 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 remote control switch S1□ is closed again, the play state is resumed by the above-described operation.

Memory operation mechanism When a memory switch 814 (not shown in the drawings) is pressed to set the counter 11 to zero and lock the play lever 44, the above-described operation causes 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 rewind operation.

When the counter 11 is reversed and reaches 999, the counter switch 815 is closed, and the slide lever 77 is closed.
Since 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 rotating shaft 17c is rotated. Take reel stand 10
The rubber roller 10b is brought into contact with the rubber roller 10b.

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 The take-up reel stand 10 is being rotated by the driving force of the motor.

That is, when the eject lever 60 is operated during recording, play, or fast-forwarding, 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 take-up reel stand 10 continues to rotate due to the driving force of the motor, so the device continues to operate.

Therefore, as shown in FIGS. 16 to 18, the eject lever 60 is
When 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 pinch roller unit 3 returns, and in FIG. 17, the head stand 2 retreats, and the
In the figure, the take-up reel stand 10 is stopped when the cassette 8 is ejected.

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-reheat lever 66 is also locked will be described here.

In this case, as can be seen from the circuit diagram of FIG. 22, the remote control switch S13 is connected to the circuit of switches 84*S5*S6, switches S8. Since they are connected in parallel with the circuit S9, the solenoid 31 can be energized each time the remote control switch S13 is operated.

Therefore, the above manual repeat operation can be performed remotely.

As described above, the present invention is provided with a tenth pick plate that corresponds to the recording, rewind, and fast forward levers, and also corresponds to the play and stop levers, and when operated, the tenth pick plate also displaces to lock the levers. We installed a 20th lock plate that makes it impossible, and a 30th lock plate that corresponds only to the play lever and makes it impossible to rank the play lever when the song interval detection lever is operated, so we have three lock plates. This has effects such as being able to perform various controls and operations.

[Brief explanation of drawings]

The figures show an embodiment of a drive mechanism for a tape recorder according to the present invention, with FIG. 1 being a top view and FIG. 2 being a bottom view. Figure 3 is a top view showing the locking mechanism of the magnetic head stand;
The figure is a side view showing the locking mechanism of the magnetic head stand, Figure 5 is a sectional view showing the take-up reel stand and part of the auto-stop mechanism, and Figure 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, and Fig. 9 is a top view showing the operating lever and the driving mechanism.
The figure is a perspective view of the auto-stop mechanism, Figure 10 is a perspective view of the driving force transmission section, Figure 11 is a top view of the music select operating lever, Figure 12 is an operating diagram showing the music select operating lever, and Figure 13 is the eject A top view of the operating lever and auto-repeat operating lever, Fig. 14 is a side view of the eject operating lever and auto-repeat operating lever, Fig. 15 is a diagram of the operation of the eject operating lever and auto-repeat operating lever, and Fig. 16 is a reel stand stop. An operation diagram of the mechanism, FIG. 17 is an operation 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, and FIG. 19 is an external view of the operating lever. Figure, Figure 20A~
FIG. 20C is an operational diagram showing the relationship between the operating lever and the lock plate, and FIGS. 21A to 21E are operational diagrams showing the relationship between each operating lever and the lock plate. FIG. 22 is a circuit diagram, FIG. 23 is an operation diagram at the intermediate position of the head stand, FIG. 24 is a play operation diagram, FIG. 25 is a play pause operation diagram, and FIG. 26 is a rewind operation diagram. FIG. 27 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... Take-up reel stand, 11.
...Counter, 14...1st for end detection
Arm, 15...Second arm for end detection, 17
...Tick-up unit, 18...Motor, 20...Set plate, 22...
...Biasing arm, 24...Control lever, 25.
...First gear, 25a... Eccentric circular groove, 2
5c...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... Rapid forward unit, 35...
Rapid feed arm, 3B...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...Lock plate, 59.-
...Control board, 60...Eject lever,
61...Sub eject lever, 64...
... Lid body, 66 ... Auto repeat lever, 6
7... Repeat lock plate, 69... Repeat slide lever, 71... Reel stop plate.

Claims (1)

[Claims] 1. A 10th pick plate that locks in the operating state when each of the recording lever, rewind lever, and fast forward lever is operated independently, and is displaced when the fray lever and stop lever are operated, displacing the above 10th pick plate. A 20th pick plate that locks in the play operation state only when the play lever is operated, and is displaced so as to release the locked state when the 20th pick plate is displaced by operating the stop lever. A drive mechanism for a tape recorder comprising a 30th pick plate and a control plate which displaces only the 30th pick plate when a song interval detection lever is operated to prevent the play lever and the 30th pick plate from locking.