JPS63166057A - Tape recorder - Google Patents

Abstract

PURPOSE:To simplify a constitution and to reduce its size and also to improve handling performance by positionally controlling a reciprocal switching member by revolving a rotary body from a 1st position to a 2nd position and releasing the positional control by revolving the rotary body from the 2nd position back to the 1st position. CONSTITUTION:The titled tape recorder is constituted in such a function that a reverse slider 32 is controlled in its reverse traveling position by a regular revolving lever 34 to be engaged and then consequently separated away from a cam gear 36, and while releasing the engagement by moving associatively with this cam gear 36, the position is reverted to its former post of the regular traveling direction by spring tension of a spring member 33. Because of almost no load against the cam gear 36, the possible control of the cam gear 36 in its action becomes quite easy, and in addition, the moving extent of the reverse slider 32 can also be improved. In this way, the cam gear 36 can be minimized in size, and hence a device minimization is feasible as well.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) This invention relates to improvements in tape recorders.

(Prior Art) In recent years, tape recorders equipped with an auto-reverse mechanism that reverses the direction of tape running in a tape recorder mechanism have become popular due to demands for improved handling and operability. In such a tape recorder, the drive force from the drive source is normally transmitted to the tape recorder mechanism through a gear transmission mechanism to control the tape recorder mechanism.

FIG. 17 shows an auto-reverse mechanism in such a conventional tape recorder. In the figure, a cam gear 2 is disposed on a main chassis 1 via a rotating shaft 2a. Then, the main chassis 1 corresponding to this cam gear 2
A reverse slider 3 is disposed so as to be movable in the directions of arrows A and B. This reverse slider 3 is formed with a protrusion 3a, and this protrusion 3a is engaged with a guide cam 2b formed on the cam gear 2. Further, first and second recesses 3b and 3C for forward and reverse direction switching are formed at both ends of the reverse slider 3, respectively.
The second recesses 3b and 3C correspond to protrusions 4a formed at both ends of the shift lever 4. This head lever 4 can be controlled to move in the directions of arrows X and Y in conjunction with the operation of the playback operation member, and an erasing head mechanism 5 and a head rotation mechanism 6 are mounted approximately at the center thereof, and at both ends thereof. Pinch rollers 7.8 are mounted corresponding to capstans 9, 10 rotatably disposed on the main chassis 1. The head rotation mechanism 6 is selectively rotated by a drive section formed in the reverse slider 3 according to two positions controlled by the reverse slider 3, and is controlled to be switched in accordance with the tape running direction.

With the above configuration, the regeneration operation member is operated and the cam gear 2
When the reverse slider 3 is rotationally driven, the projection 8 of the reverse slider 3
1S3a is selectively controlled to move in the six directions of arrows by the guide cam 2b of the cam gear 2. At the same time, the head lever 4 is controlled to move in the direction of arrow X. Then, head lever 4
The protrusion 4a contacts the recesses 3b and 3C of the reverse slider 3 according to the two positions controlled by the reverse slider 3 and is rotated clockwise and counterclockwise in the figure, and the pinch roller 7.8 It is selectively abutted against the capstan 9.10. At this time, the reverse slider 3 uses its drive section 3d to control the switching of the head rotation mechanism 6 according to the tape running direction, thereby controlling the switching of the tape running direction of the tape recorder mechanism. Note that FIG. 18 shows the tape running in the forward direction in which the reverse slider 3 is controlled to move in the six directions of arrows, and FIG.
3 shows a state in which the tape is running in the reverse direction with movement controlled in this direction.

However, in the above tape recorder, the protrusion 3a of the reverse slider 3 is attached to the guide cam 2b of the cam gear 2.
Since the cam gear 2 is always in sliding contact with the cam gear 2, a frictional force is generated on the cam gear 2, and the load force at the time of switching becomes very large, making its handling very complicated. Since the protrusion 3a of the reverse slider 3 is always in sliding contact with the guide cam 2b of the cam gear 2, the guide cam 2b of the cam gear 2 and the protrusion 3a of the reverse slider 3 have high precision. Another problem was that it was expensive due to the manufacturing requirements.

In addition, since the amount of movement of the reverse slider 3 corresponds to the shape and size of the cam gear 2, the above configuration can effectively utilize the radius or less of the shape and size of the cam gear 2. It also had the problem of becoming larger.

(Problems to be solved by the invention) This invention was made to solve the above-mentioned troublesome handling and large-sized problems, and has a simple configuration.
It is an object of the present invention to provide a tape recorder which can be downsized and whose handling can be improved as much as possible.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a tape recorder having an auto-reverse mechanism for reversing the tape running direction. A rotating body that has a reverse switching member and a drive unit that operates the forward/reverse switching member and controls first and second positions according to the tape running direction, and a drive unit for the rotating body that operates the forward/reverse switching member. a biasing means for biasing the
The position of the forward/reverse switching member is regulated by rotation of the rotary body from a first position to a second position, and the position restriction is released by rotation of the rotary body from the second position to the first position. It is characterized by comprising a regulating member.

(Function) With the above configuration, the forward/reverse switching member is regulated by the regulating member in the second position and separated from the rotating body, and the regulation is released in conjunction with the rotation of the rotating body, and the biasing force of the biasing means is applied to the forward/reverse switching member. It is designed to return to its original position.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 and 2 show a tape recorder according to an embodiment of the present invention, with FIG. 1 showing the front side and FIG. 2 showing the back side.

That is, a pair of reel shafts 21.22 are arranged approximately in the center of the main chassis 20 with a predetermined distance therebetween, and drive gears 23.24 are fitted onto the reel shafts 21.22, respectively. There is. A high-speed slider 25 is disposed at an intermediate portion of the reel shaft 21, 22 so as to be movable in the directions of arrows C and D, and a spring member 27 that is connected to a playback operation member 26 is engaged with one end of this high-speed slider 25. It will be worn. Further, a shaft 25a is implanted at one end of the high-speed slider 25, and a first switching lever 28 is rotatably supported on this shaft 25a. The first switching lever 28 has a pair of first and second engaging portions 28a at one end thereof.

28b is formed, and a protrusion 28c is formed at the other end. A recess 29a formed at one end of the second switching lever 29 is inserted into the projection 28c. This second switching lever 29 is connected to a shaft 2 mounted on the main chassis 20.
The shaft 29b is rotatably supported on the shaft 29b.
A switching spring 30 is engaged between the rotation fulcrum protrusion 29C formed at the other end. The other end of the switching spring 30 is engaged with an engaging portion 31a formed on a switching slider 31 (see FIG. 2).

Further, a reverse slider 32 is disposed on the main chassis 20 so as to be movable in the directions of arrows C and D, and one end of the reverse slider 32 has first and second locking portions 3.
2a and 32b are first and second engaging portions 28a of the first switching lever 28;

28b. This reverse slider 3
2 has a spring engaging part 32C formed at one end thereof, and one end of a spring member 33 which is engaged with the main chassis 20 is engaged with this spring engaging part 32c so as to apply its spring force in the direction of arrow F. be done. Further, a locking portion 32d is formed at the other end of the reverse slider 32 to correspond to a locking portion 34b of the normal rotation lever 34 rotatably supported by the main chassis 20 via a shaft 34a. As shown in FIG. 3, this normal rotation lever 34 has a spring engagement part 34C formed at one end, and this spring engagement part 34c has a main chassis 20
One end of a spring member 35 supported by is engaged. Further, a driven portion 34d is formed at the other end of the normal rotation lever 34, and this driven portion 134d slides on one surface of a reverse cam gear 36 rotatably supported by the main chassis 20. A driving portion 36a is formed on this cam gear 36 in correspondence with the driven portion 34 (j) of the normal rotation lever 34, and in conjunction with the rotational drive thereof, a driving portion 32d formed on the reverse slider 32 is first formed. is urged to move in the direction of arrow F, and the driven portion 3 of the normal rotation lever 34 is moved in the next rotation.
4d to rotate and release the locking portion 32d of the reverse slider 32 by the locking portion 34b. Further, first and second notches 36b and 36c are formed at a predetermined interval on the periphery of the cam gear 36, and a cam portion 36d for forward/reverse switching is formed on one side of the cam gear 36. First and second locking portions 36e and 36f are formed at an interval of 180° on this cam portion 36 (j) corresponding to the driving portion 36a. The engagement portion 37a of the reversal switching lever 37 is in calendar contact.The base of the reversing switching lever 37 is rotatably supported by the main chassis 20, and a manual reverse operation member 38 is movably supported at one end thereof. This manual reverse operation member 38 has a buffer portion 38a formed in its middle portion to face the recording operation member 39, and when the recording operation member 39 is in an operating state, its operation is prevented. In addition, the reversal switching lever 3
A trigger slider 40 is connected to the other end of the trigger slider 7 . This trigger slider 40 is disposed so as to be slidable in the directions of arrows E and F, and a recess 40a formed in the middle thereof has an engagement formed at one end of an ASO lever 41 constituting a tape running stop mechanism. The portion 41a is loosely inserted. This AS
The O lever 41 has an intermediate portion rotatably supported by the main chassis 20, and the other end is Il[i], which will be described later.
It slides into contact with an eccentric cam 42a formed on a second reduction gear 42 constituting the IN transmission mechanism via an rI1wA plate 42b. This ASO lever 41 is connected to the second reduction gear 4
As the trigger slider 2 rotates, it comes into sliding contact with the inner peripheral part of the eccentric cam 42a, and when the end of the tape reaches, the other end is biased to rotate in the outer peripheral direction, biasing the trigger slider 40 to move in the direction of arrow E, As a result, the reversal switching lever 37 is urged to rotate counterclockwise in the figure, thereby stopping the tape running.

Furthermore, as shown in FIG. 4, a head lever 43 is mounted on the high-speed slider 25 via arrows C and 44.
It is arranged to be movable in the D direction.

This head lever 43 has a spring engaging portion 43 at approximately the center thereof.
a is formed, and one end of a spring member 45 is engaged with this spring engagement portion 43. The other end of this spring member 45 is engaged with the regeneration operation member 25. In addition, rotatable pinch rows 546 are provided at both ends of the helad lever 43.
．． 47 are supported correspondingly to capstans 48 and 49 (see FIG. 1), and a head rotation mechanism 50 is disposed in the middle thereof. The head rotation mechanism 50 is rotationally controlled by a head drive section 32e formed in the reverse slider 32 according to the tape running direction. Furthermore, driven parts 43b and 43c are formed at both ends of the heel lever 43 to correspond to the locking parts 32f and 32Q (see FIG. 1) formed at both ends of the reverse slider 32. is moved in the direction of arrow C via the spring member 27 in conjunction with the operation of the regeneration operation member 26, and the driven parts 43b and 43c selectively engage the locking parts 32f and 32g of the reverse slider 32. It comes into contact with one side and is biased to rotate clockwise and counterclockwise in the figure. As a result, the pinch rollers 46, 47 of the head lever 43 are pressed against one of the capstans 48, 49 only by the spring force of the spring member 45.

In addition, the head rotation mechanism 5 in the helad lever 43 is
An erasing head mechanism 51 is disposed at one end of the erase head 0 . This erasing head mechanism 51 has an erasing head 5 as shown in FIG.
2 is press-fitted and attached to the head holder 53, and this head holder 53 is mounted on the recording operation member 37 (see FIG. 1).

A guide portion 54 for sliding guidance is formed on the head holder 53, and this guide portion 54 is movably fitted into a guide portion 55 formed on the main chassis 20 with a spring member 73 interposed therebetween. As the recording operation member 37 slides, the head holder 53 is guided by the guide portion 55 of the main chassis 20 and moved integrally, bringing the erasing head 52 into contact with the tape.

Here, as shown in FIG. 2, a flywheel 56.57 is coaxially formed on the capstan 48.49 on the back side of the main chassis 20, and a pulley of a drive motor 58 is attached to the flywheel 56.57. The belt 60 wrapped around the belt 59 is wound around the belt 59. A driving gear 61 is integrally fitted into one of the flywheels 57 as shown in FIG. This drive gear 61 is meshed with a first gear 63 via a first reduction gear 62 and the second reduction gear 42 that constitute a gear transmission mechanism. Among these, the first reduction gear 62 is disposed to be movable in the axial direction, and a driven portion 62a is formed on one side of the first reduction gear 62, and a drive gear 64 is connected to the cam gear on the front side of the main chassis 20. 36 (see FIG. 1).

On the other hand, the second reduction gear 42 has a built-in clutch mechanism 65. The gear 24 of the one reel shaft 22 is meshed with the first gear 63, and the second gear 66 is engaged with the gear 24 of the one reel shaft 22.
It is aligned with the The second gear 66 meshes with the gear 23 of the other reel shaft 21 . These first and second
The gears 63 and 66 are respectively supported so as to be movable in the axial direction, and driven parts 63a and 66a are formed at their respective bases in correspondence with the driving part 31b formed on the switching slider 31'. .

One end of a connecting member 67 is linked to one end of the switching slider 31 . The other end of the connecting member 67 is rotatably supported by the main chassis 20, and a driven portion 67a is formed in the intermediate portion thereof. A driven portion 67a of this connecting member 67 is a rewind and fast forward operation member 68.
．． 69, respectively. This rewind and fast forward operation member 68.6
9 are arranged so as to be slidable in the directions of arrows C and D, respectively, and switching drive sections 68b and 69b are formed in the intermediate portions thereof, respectively. One end of a lift lever 70 rotatably supported with respect to the main chassis 20 is engaged with the switching drive parts 68b and 69b, and a drive part 70a is connected to the other end of the lift lever 70. It is formed corresponding to the driven portion 62a of the reduction gear 62. A spring engaging portion 70b is formed at the other end of the lift lever 70, and one end of a spring member 71 is engaged with this spring engaging portion 70b. The other end of the spring member 71 is engaged with a lock slider 72 that locks the playback operation member 26 and the recording operation member 39 in the operation position, and causes the lift lever 70 and the lock slider 72 to interlock. Further, a detachment drive portion 32h formed on the reverse slider 32 corresponds to the driven portion 62a of the first reduction gear 62 (
As the reverse slider 32 moves in the directions of arrows E and F, the drive gear 6 is urged to move in the axial direction.
It is configured to pass through a non-power transmitting position where it is disengaged from the first and second reduction gears 42.

In the above configuration, when a playback operator (not shown) is operated to play the tape in the forward direction, the playback operation member 26 first slides in the direction of arrow C and is locked at that operating position by the lock slider 72. Ru. At this time, as shown in FIG.
8 in the same direction. Then, the first switching lever 28 is rotated counterclockwise in the figure with its first engaging portion 28a abutting one of the first locking portions 32a of the reverse slider, and along with the rotation, the first switching lever 28 is rotated counterclockwise in the figure. The second switching lever 29 is urged to rotate clockwise in the figure.

The second switching lever 29 uses its rotational biasing force to bias the engaging portion 31a of the switching slider 31 to move in the direction F in the figure via the spring member 30. As a result, the switching slider 3
As shown in FIGS. 8 and 9, the second gear 66 is moved and biased in the axial direction by its driving portion 31b to separate from the gear 23 of one reel shaft 21, and the tape running system is moved to the tape correct position. Control the direction running state.

On the other hand, as the playback operation member 26 moves in the direction of arrow C, it uses the spring force of the spring member 27 to urge the head lever 43 to move in the direction of arrow C together with the support member 44. Then, one of the driven parts 43b of the head lever 43 comes into contact with the locking part 32f of the reverse slider 32, and is urged to rotate counterclockwise in the figure, and the pinch roller 47 is capped via the tape. It is pressed against the stun 49 only by the spring force of the spring member 45 (see FIG. 7). At the same time, the reverse slider 32 controls the head rotation mechanism 50 with its head drive unit 32e to play the tape in the forward direction, and the reel shaft 22 is connected to the drive motor 58.
, drive gear 61, first and second reduction teeth 1 [62, 42
, and is rotated at a constant speed via the first gear 63 to play the tape in the forward direction.

In addition, in the tape forward playback state, when the end of the tape is reached, the ASO lever 41 is rotated counterclockwise in the figure and moved toward the outer periphery of the eccentric cam 42a of the second reduction gear 42. Then, the lock slider 72 is operated, and the regeneration operation member 26 is unlocked. As a result, the playback operation member 26 is returned to the original stop position together with the high-speed slider 25 by the spring force of the spring member 27, and in conjunction with this, the tape recorder mechanism is controlled to stop tape running.

Further, when the reverse operation member (not shown) is operated in the state where the end of the tape has been reached, the playback operation member 26 is held at the operation position by the lock slider 72. Then, the ASO lever 41 is moved to the trigger slider 4.
0, the reverse switching lever 37 is rotated clockwise in the figure, the cam gear 36 is brought into mesh with the drive gear 64, and the cam gear 36 is moved from the first notch 36b to the second notch. It is rotated until it reaches the notch 36c. At this time, this cam gear 3
Reference numeral 6 urges the driven portion 32e of the reverse slider 32 to move in the direction of arrow F against the spring force of the spring member 33 using the driving portion 36a. When this reverse slider 32 reaches the tape running switching completion position, its locking portion 32d
As shown in FIG.
b, and is regulated in a so-called free state relative to the cam gear 36. Here, the reverse slider 32
presses the second engaging portion 28b of the first switching lever 28 with its second engaging portion 32b, reverses the second switching lever 29, and moves the switching slider 31 in the direction of arrow F via the spring member 30.
energized to move in the direction. At the same time, the detachment driving portion 32h of the reverse slider 32 comes into contact with the driven portion 62a of the first reduction gear 62, and urges the first reduction gear 62 to move in the axial direction as shown in FIG. drive gear 61 and the second
from the reduction gear 42. At this time, the switching slider 31 uses its driving portion 31b to separate the first gear 63 from the gear 24 of the reel shaft 22, and also disengages the second gear 63 from the gear 24 of the reel shaft 22.
6 is meshed with the gear 23 of the reel shaft 21, and the tape running system is controlled to be switched to a state in which the tape runs in the reverse direction as shown in FIGS. 12 and 13. At this time, the first and second gears 63 and 66 are respectively m1l from the gear 24.23.
l! The switching operation is performed via the non-power transmitting position. At the same time, the locking portion 32f of the reverse slider 32 is separated from one driven portion 4343b of the head lever 43, and the locking portion 3 of the other end of the reverse slider 32 is separated from the driven portion 4343b of the head lever 43.
At step 2o, the other driven portion 43c of the head lever 43 is pressed and reversed clockwise in the figure. As a result, the pinch roller 47 of the head lever 43 is pressed against the capstan 49 via a tape (not shown) only by the spring force of the spring member 45. At this time, the reverse slider 32 controls the head rotation 111150 by switching the head rotation 111150 with its head drive unit 32e to play the tape in the reverse direction,
Here, the reel shaft 21 is connected to the drive motor 58 and the drive teeth 1161.
, the first and second reduction gears 62.42, and the first and second gears 63.66, the tape is rotated at a constant speed to play the tape in the reverse direction.

When the stop operation member (not shown) is operated in the tape playback state, the playback operation member 26 is unlocked by the lock slider 72 and the tape recorder Vs structure is controlled to switch to the tape running stop state as described above. be done. At the same time, the playback operation member 26 moves the high speed slider 25
, first and second switching levers 28, 29, spring member 27
The switching slider 31 is returned from the original tape running stop position to the forward playback position of the tape (@).

Further, in the tape running stopped state, when a rewinding operator (not shown) is operated while the tape is not rewinding, the rewinding operation member 68 is slid in the direction of arrow C. Then, this rewinding operation member 68 moves to its switching drive section 6
8b presses the lift lever 70 in the same direction to urge it to rotate counterclockwise in the figure. As a result, the lift lever 70 presses and moves the driven portion 62a of the first reduction gear 62 in the axial direction with its detachment drive portion 70a, and the non-power transmission detaches from the drive gear 61 and the second reduction gear 42. Controls switching to high-speed rotation drive state via position. At the same time, the rewinding operation member 68 presses the driven portion 67a of the connecting member 67 with its driving portion 68a in the non-power transmission position controlled by the first reduction gear 62, thereby urging the rewinding operation member 68 to rotate clockwise in the figure. , moves and urges the switching slider 31 in the direction of arrow E. At this time, the switching slider 31 uses its driving portion 31b to disengage the first gear 63 from the gear 24 of the reel shaft 22, and
The second gear 66 is meshed with the gear 23 of the reel shaft 21,
The tape running system is controlled to the tape rewinding state as shown in FIGS. 14 and 15, and tape rewinding is performed here. At this time, the first and second gears 63, 66 are switched through a non-power transmitting position where they are separated from the gears 24, 23, respectively. Further, when the switching slider 31 is maintained in the tape reverse direction running state, the tape reverse direction running position N (state moved in the E direction in the figure) is maintained, and the gear switching operation by the drive section 68a is performed. It is something that is never done.

Then, in the tape running stopped state, when a fast-forwarding operator (not shown) is operated without fast-forwarding the tape, the fast-forwarding operation member 69 is slid in the direction of arrow C. Then, the fast-forward operating member 69 presses the lift lever 70 in the same direction with its switching drive portion 69a, thereby urging the lift lever 70 to rotate counterclockwise in the figure. As a result, the lift lever 70 presses and moves the driven part 62a of the first reduction gear 62 in the axial direction with its detachment drive part 70a, and the drive gear 62 moves.
Switching control is performed to a high-speed rotation drive state via a non-power transmission position where the first and second reduction gears 42 are disengaged. at the same time,
The fast-forward operating member 69 connects the connecting member 67 with its driving portion 69a.
The driven portion 67a is pressed to urge it to rotate clockwise in the figure. At this time, the switching slider 31 controls the forward running position of the tape in the direction of the arrow F, so that the switching slider 31 controls the tape forward running position in the direction of the arrow F.
Therefore, the gear switching operation will not be performed. At this time, if the switching slider 31 is in the tape forward running position in the direction of arrow E, the drive section 69 of the fast-forward operation member 69
a, the switching slider 31 is urged to move in the direction of arrow F via the connecting member 67, and its driving portion 31b disengages the second gear 66 from the gear 23 of the reel shaft 21.
The first gear 63 is meshed with the gear 24 of the reel shaft 22,
The tape running system is controlled to fast-forward the tape as shown in FIG.

In addition, when the rewinding operation member 68 is operated in the tape reverse direction playback state, the playback operation member 26 is returned in the direction of the arrow via the high-speed slider 25, thereby causing the pinch roller 46 of the head lever 43 to The tape recorder mechanism is controlled to be in a rewind playback state by being slightly separated from the stun 48. At this time, the rewinding operation member 68 rotationally biases the lift lever 70 with its switching drive portion 68b, and switches the first reduction gear 62 to the high speed driving state via the axial non-power transmission position. , the tape running system is controlled to a rewinding running state.

When the fast-forward operation member 69 is operated in the tape forward playback state, the playback operation member 26 is returned in the direction of the arrow via the high-speed slider 25, thereby causing the pinch roller 47 of the head lever 43 to move to the capstan. 49
The tape recorder mechanism is controlled to be in a fast-forward playback state by being slightly separated from the tape recorder mechanism. At this time, the fast-forward operation member 69 rotationally biases the lift lever 70 with its switching drive portion 69b, and switches the first reduction gear 62 to the high-speed traveling drive state via the axial non-power transmission position, The tape running system is controlled to a rewinding running state.

In addition, for tape recording, the above playback operation member 2
When the recording operation member 39 is operated in the direction of arrow C along with 6, the tape recorder mechanism is controlled to be in a tape forward recording state. At the same time, the head holder 53 of the erasing head mechanism 51 housed in the head lever 43 is moved along with the recording operation member 39 in the direction of arrow C with its guide section 54 guided by the guide section 55 of the main chassis 20, and the erasing head 52 comes into contact with the tape together with the magnetic head 50a of the head rotation mechanism 50, and one-way recording of the tape is performed. Note that when the tape running direction is switched in the tape forward recording state, the reverse recording prevention portion 32i formed at one end of the reverse slider 32 prevents tape reverse recording.

In this way, the tape recorder has a reverse slider 3.
2 is regulated and locked by the forward rotation lever 34 in the reverse direction traveling position, and is separated by the cam gear 36, and the lock is released in conjunction with the rotation of the cam gear 36, and the spring force of the spring member 33 Since the cam gear 36 is configured to return to its original forward running position, the load on the cam gear 36 is almost eliminated, so that the cam gear 36 can be moved as much as possible compared to the conventional one.
The operation of the reverse slider 32 can be controlled very easily, and the amount of movement of the reverse slider 32 can also be improved. Thereby, the cam gear 36 can be made smaller, and the size can be improved as much as possible.

In the above embodiment, the reverse slider 32 is configured to be restricted at the tape reverse direction running position, but it is also possible to configure it to be restricted at the tape forward direction running position.

Therefore, it goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As described above in detail, according to the present invention, it is possible to provide a tape recorder that has a simple configuration, can be downsized, and can realize improved handling.

[Brief explanation of the drawing]

1 and 2 are plan views showing a tape recorder according to an embodiment of the present invention, FIG. 3 is a perspective view showing the tape running direction switching mechanism shown in FIG. 1, and the fourth factor is the tape recorder shown in FIG. 1. FIG. 5 is an exploded perspective view and cross-sectional view showing the erasing head l141I shown in FIG. 4; FIG. 6 is a cross-sectional view showing the gear transmission mechanism shown in FIG. 2; 7 to 16 are operation explanatory diagrams shown to explain the operation of the tape recorder shown in FIGS. 1 and 2, respectively, and FIGS. 17 to 19 show an auto-reverse mechanism of a conventional tape recorder. 20...Main chassis, 21.22...Reel shaft, 23.24.
... Gear, 25 ... High speed slider, 25a ... Axis,
26... Regeneration operation member, 27... Spring member, 28.
...first switching lever, 28a, 28b...first and second engaging portion, 28G...protrusion, 29...second switching lever, 29a...recess, 29b...・Axis, 29
C... Protrusion, 30... Switching spring, 31... Switching slider, 31a... Locking part, 32... Reverse slider, 32a, 32b... First and second locking Department,
32C...Spring engaging portion, 33...Spring member, 32d
...Locking part, 34a...Shaft, 34...Normal rotation lever, 34b...Lock part, 34e...Spring engaging part, 3
5... Spring member, 34d... Driven part, 36...
Cam gear, 36a...driver, 36b, 360...
First and second notch portions, 36d... cam portion, 36
e, 36f...first and second locking parts, 37...reverse switching lever, 37a...engaging part, 38...manual reverse operation member, 39...recording operation member, 38a
...Buffer section, 4°...Trigger slider, 41...
・ASO lever, 41a... engaging portion, 42... second
reduction gear, 42a... eccentric cam, 42b... friction plate, 43... head lever, 44... support member, 4
3a... Spring engaging portion, 45... Spring member, 46.4
7... Pinch roller, 48° 49... Capstan, 50... Head rotation mechanism, 32e... Head driving section, 43b, 43C... Driven section, 32f, 32Q.
...Locking portion, 51... Erasing head mechanism, 52... Erasing head, 53... Head holder, 54.55...
Guide section, 56.57...Flywheel, 58...
Drive motor, 59...Pulley, 60...Belt, 6
1... Drive gear, 62... First reduction gear, 63...
...First gear, 62a... Driven part, 64... Drive gear, 65... Clutch mechanism, 66... Second gear, 63a, 66a... Driven part, 31b. ... Drive part, 67... Connection member, 67a... Driven part, 68
...Rewind operation member, 69...Fast forward operation member, 6
8a. 69a... Drive unit, 68b, 69b... Switching drive unit, 70... Lift lever, 70a... Drive unit, 70
b... Spring engaging portion, 71... Spring member, 72...
Lock slider, 32h... Detachment drive section, 321...
- Reverse recording prevention section.

Claims (1)

[Claims] In a tape recorder having an auto-reverse mechanism that reverses the tape running direction, the first
and a forward/reverse switching member that controls a second position, a rotating body that has a drive unit that operates the forward/reverse switching member and controls the first and second positions according to the tape running direction, and the forward/reverse switching member. a biasing means for biasing a member against a drive section of the rotary body; a biasing means for regulating the position of the forward/reverse switching member by rotation of the rotary body from a first position to a second position; A tape recorder comprising: a regulating member that releases the positional regulation when rotated from the position to the first position.