JPS5912780Y2 - Tape recorder pause mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a pause mechanism in a tape recorder.

Pause mechanisms are known in the art that can temporarily stop a tape during recording or playback.

In general, when a pause operation is performed during recording or playback, the operating member is moved to release rotation transmission to the take-up reel stand and to separate the pinch roller from the capstan. There is.

This conventional typical embodiment will be described with reference to FIGS. 1 and 2.

FIG. 1 shows a regeneration state, in which the regeneration button 10 is pressed and the operating lever 11 is moved forward to remove the locking plate 1.
2, this causes the head substrate 13 (
The head (not shown) is pulled and moved by a spring 14.

Furthermore, the pinch roller holding member 15 is displaced by the movement of the head substrate 13, and the pinch roller 16 is pressed against the capstan 18 established on the flywheel 17.

A U-shaped support member 2 that rotates around the shaft 19 at the same time
The engagement between the pin 21 provided at one end of the head substrate 13 and the engagement protrusion 22 provided at the opposite position of the head substrate 13 is released;
A rotating shaft 24 of an idler 23 rotatably supported at the other end of the supporting member 20 is pressed against the periphery of the take-up reel stand 26 by rotational displacement of the supporting member 20 due to tension of a spring 25.

As a result, the idler 23 transmits the rotation from the flywheel 17 through a belt (not shown) and rotates the take-up reel stand 26 through the rotating shaft 24, and at the same time, the cooperative rotation of the capstan 18 and the pinch roller 16 causes the tape to be tapered. (not shown) is wound by traveling at a constant speed.

In addition, when in the rest position, the inclined tip 30 is located in front of the pin 21 of the support member 20, and the bent piece 31 is immediately adjacent to the retaining piece 32 having the inclined part formed on the pinch roller holding member 15. A temporary stop mechanism lever 33 is provided, which is relatively formed so as to be located at the front.

Further, the temporary stop operating lever 33 has a pin 34 and a groove 35 formed therein.

An established shaft 36 is disposed within the groove 35, and the groove 35 is guided by the shaft 36 so that the temporary stop operating lever 33 moves straight.

Furthermore, a locking member 37 rotatably supported by a shaft 36 is disposed on the upper surface side of the operating lever 33.

When the operating lever 33 is moved to the operating position, the locking member 37 resists the restoring force of the spring 38 and locks the pin 3.
4 and a release claw 40 bent diagonally upward to release the pin 34 when the operating lever 33 is moved again in the same direction. It is energized downward.

The head board 13, playback operation lever 11, pause operation lever 33, etc. slide along the top surface of a chassis structure (not shown), and the shaft 19.36 and the like are also attached to the chassis structure. It is.

With the above structure, first, as shown in FIG. 1, in the playback state, the tape (not shown) is run at a constant speed by the cooperative rotation of the capstan 18 and the pinch roller 16, and then the tape is moved to the take-up reel stand. 26 is the rotation shaft 24 of the idler 23
Rotation from the flywheel 17 is transmitted to wind the tape.

Next, when temporarily stopping the tape in the above playback state, press and operate the pause button 42 to move the bar 33 forward.
9 and is finally engaged with the engaging pawl 39 by the spring 41 as shown in FIG. 2, and is held in the operating position against the spring 38.

At this time, the tip 30 of the temporary stop operating lever 33 pushes away the pin 21 and slightly rotates the support member 20 clockwise against the tensile force of the spring 25. 26, and the pinch roller holding member 1
5 is pushed away, the holding member 15 is displaced, and the pinch roller 16 is separated from the capstan 18.

This temporarily stops tape running.

Further, when the temporary stop button 42 is further pressed and the operation lever 33 is moved forward slightly from the above-mentioned operating position, the pin 34 is moved to the engagement claw 3.
4 and the locking part 37 is rotated clockwise by the spring 41, so that the pin 34 comes to the lower surface of the release claw 40, and thereby the locking member 37 locks the operating lever 33. The operating lever 33 returns to its original rest position due to the restoring force of the spring 38.

Therefore, the support member 2o and the holding member 15 are released from the engagement by the operating lever 33, and are returned to the tape reproducing state as shown in FIG.

As described above, tape running can be temporarily stopped during recording or playback, but the above-mentioned pause mechanism requires a separate locking member or spring, which is costly. It was expensive, had a complicated structure, and was time-consuming to install.

In addition, since a locking member and a spring are involved, the timing of the temporary stop operation, the contact of the idler rotating shaft with the take-up reel stand, and the pressing of the pinch roller against the capstan must be carefully considered in the design. Various problems remained, such as the failure to do so.

The present invention has been developed in view of the above-mentioned points, and a locking portion is provided directly on a support member equipped with a rotating body that transmits the rotation of the flywheel to a take-up reel stand, and this locking portion and a temporary stop mechanism are provided. The present invention provides a temporary stop mechanism for a tape recorder, which has a configuration in which a push-button mechanism is formed by engaging and disengaging with a pin provided on a lever, and which reduces the number of parts, simplifies the structure, and improves operational reliability. be.

Hereinafter, embodiments of the temporary stop mechanism according to the present invention will be described in detail with reference to FIGS. 3 to 5.

First, the side plates 5 of the chassis structure 50 (shown in FIG. 5)
A locking plate 53 is provided with substantially both ends inserted into holes 52 and 52' provided at 1.51' and slidably supported.

The locking plate 53 is always urged in one direction by a spring 54.

Also, a playback button 55 is pressed in a direction perpendicular to the locking plate 53.
A regeneration operation lever 56 is provided.

The other end of a spring 58, one end of which is attached to the head substrate 57, is hung on the bent tip of the playback operation lever 56.

Further, a U-shaped holding member 63 holding a pinch roller 62 is disposed opposite to a capstan 61 established on a flywheel 60 to which rotational force is transmitted from a motor (not shown).

This pinch roller holding member 63 has one end locked to the head substrate 57 and the other end of a spring 64 locked, and is biased in the detachment direction from the capstan 61.

Furthermore, an engagement piece 65 having a protruding slope is formed on the lower side of the holding member 63.

Further, a gear 66 is attached to the base of a capstan 61 established on the flywheel 60.

Between the gear 66 and the take-up reel stand 67, a rotating body such as an idler 6 is rotatably supported approximately at the center of an arm-shaped support member 68 made of, for example, a hard synthetic resin.
9 is interposed.

Further, a retaining portion 70 is formed at one end of the support member 68, and a hook-shaped protrusion 71 is also formed at the other end, which is gradually made wider.

One end of a spring 73 wound around a shaft 72 established in the chassis structure 50 is locked to the hook-shaped protrusion 71.
The other end of this spring 73 is engaged with a hole 75 in a side wall 74.

That is, the support member 68 is constantly pressed by the biasing force of the spring 73 to urge the idler 69 from the rest position to the operating position, that is, in a direction in which the idler 69 is brought into pressure contact with the periphery of the take-up reel stand 67 and the gear 66.

Further, when the supporting member 68 is at the rest position, the supporting member 68 resists the urging force of the spring 73 to take up the idler 69 and move it to the reel stand 6.
The retaining portion 70 is pushed back and engaged by a protrusion 76 formed at the tip of the head substrate 57 so as to be separated from the head substrate 7 and the gear 66.

Next, a locking portion 78 is integrally formed on the upper surface 77 near the protrusion 71 formed at the other end of the support member 68.

This locking portion 78 has a constant thickness and is composed of an engaging claw 79, a guide wall 80, and an inclined portion 81.

Incidentally, although not shown, the support member 68 is configured to be able to reciprocate along a predetermined path along a plane 82 through a guide hole provided in the chassis structure 50.

Next, a temporary stop operation lever 84 having a pin, for example, a bending pin 83 formed downward facing the locking portion 78, is disposed perpendicular to the locking plate 53.

A spring 86 is applied to provide a restoring force when the pause button 85 is pressed.

Further, the temporary stop operation lever 84 is provided with a bent piece 87 facing the engagement piece 65 of the pinch roller holding member 63.

88 is a supply reel stand. With the above structure, in order to change from the rest position to the playback state shown in FIG. 3 (the tape is not shown), the playback button 55 is pressed and the operation lever 5
6 is moved forward and is locked by the locking plate 53 against the restoring force of the spring 89.

As a result, the head substrate 57 (head not shown) is pulled by the spring 58 and moved.

Furthermore, since the spring 64 is pressed by the movement of the head substrate 57, the pinch roller holding member 63 is displaced toward the capstan 61, and the pinch roller 62 is pressed against the capstan 61.

At the same time, the support member 68 with which the engaging portion 70 was engaged by the protruding portion 76 is released by the movement of the head substrate 57, and is moved from the rest position to the operating position by the biasing force of the spring 73.

That is, the idler 69 is pressed against the periphery of the take-up reel stand 67 and the periphery of the gear 66.

Therefore, the rotation of the flywheel 60, that is, the rotation of the gear 66, is transmitted to the take-up reel stand 67 via the idler 69.

Therefore, the tape is connected to the capstan 61 and the pinch roller 62.
The roller is moved at a constant speed by the cooperative rotation of the rollers, and is wound up by the winding reel stand 67.

Next, in the above-described playback state, if you want to temporarily stop the tape, press the pause button 85 and press the operation lever 85.
When the pin 83 is moved forward, the pin 83 pushes aside the periphery of the engaging claw 79 of the locking part 78 against the biasing force of the spring 73, and is finally engaged with the engaging claw 79 by the spring 73.
6 and is held in the operating position.

Therefore, as shown in FIG. 4, the support member 68 does not return to the normal rest position, but is retracted by the restoring force of the spring 73 to the rest position where the idler 69 is disengaged from the gear 66.

Therefore, the take-up reel stand 67 is not rotated.

At the same time, the engagement piece 65 of the pinch roller support member 63 is pressed by the bending piece 87 and moves backward, and the pinch roller 62 is disengaged from the capstan 61.

Therefore, the running of the tape is stopped.

Next, when canceling the temporary stop state, press the above temporary stop button 85.
Press further from the operating position to release the temporary stop operation lever 84.
When the pin 83 is moved forward, the pin 83 is disengaged from the engaging pawl 79 of the locking portion 78 due to the biasing force of the spring 73.

When the pin 83 is disengaged from the engaging claw 79, the pin 83 escapes through the inclined portion 81 due to the restoring force of the spring 86, so that the engagement by the locking portion 78 is released.

Therefore, the support member 88 is pressed by the biasing force of the spring 73 and returned to the operating position.

On the other hand, since the engagement of the pinch roller holding member 63 with the engagement piece 65 by the bending piece 87 is released, the pinch roller 62 is pressed against the capstan 61 and returned to the regenerated state as shown in FIG. 3 mentioned above. .

Further, although the above-mentioned pause operation is not shown, it can also be performed from the recording state or the pause state.

In the above embodiment, the idler 69 that directly receives the rotational force of the flywheel 60 is used as the rotating body that transmits the rotational force to the take-up reel stand 67, but the idler 69 is not limited to this. It may also be configured by a rotating shaft to which rotational force is transmitted by a belt such as the one shown in FIG.

Further, when the supporting member 68 is made of synthetic resin, the locking portion 78 is integrally formed, but if it is made of metal, it may be formed by bending in the same manner as in the past.

As described above, according to the temporary stop mechanism of the tape recorder according to the present invention, the locking portion is provided directly on the support member equipped with the rotating body that transmits the rotation from the flywheel to the take-up reel stand, and the locking portion and It has a structure that creates a push-button mechanism by engaging and releasing the pin provided on the temporary stop operation lever, and the locking member and the spring that biases this locking member, which were conventionally provided separately, are omitted. It is something that can be done.

Therefore, the structure is simplified, costs can be reduced, and blade assembly work is also made very easy.

Furthermore, since no separate locking member is involved, it is possible to perfectly time the timing of the temporary stop operation, the pressing and releasing of the rotating body with respect to the take-up reel table, and the pressing of the pinch roller with the capstan. It is effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the pause mechanism in a conventional tape recorder in a resting state, FIG. 2 is a plan view showing the same operating condition, and FIG. 3 is an embodiment of the pause mechanism of the tape recorder according to the present invention. FIG. 4 is a plan view showing a paused state of the pause operation in the reproducing state, FIG. 4 is a plan view showing the same operating state, and FIG. 5 is a perspective view showing the main parts of FIG. 3.

Claims (1)

[Scope of utility model registration request] A flywheel rotationally driven by a drive source, a capstan established on the flywheel, a pinch roller disposed opposite to the capstan and held by a holding member, and the pinch roller and the capstan. It is interposed between a take-up reel stand that winds the tape traveling at a constant speed from the supply reel stand side by cooperative rotation by crimping, and this take-up reel stand and the flywheel, and when it moves from the rest position to the operating position a support member equipped with a rotating body that transmits rotation from the flywheel to the take-up reel stand; a lock portion provided on the support member having an engaging pawl and an inclined portion; and a temporary stop mechanism lever that forms a push-button mechanism by engaging and disengaging with the locking section.During recording or playback, the pin is connected to the locking section by pushing the pause operation lever. The support member is moved to the rest position by engaging with the engagement claw of the locking member, and the transmission of rotation from the flywheel to the take-up reel stand by the rotating body is released, and by operating the button again, the pin is moved to the inclined part of the locking part. The supporting member is moved to the operating position, and the rotating body transmits the rotating body from the flywheel to the take-up reel stand, and in conjunction with the above operation, the pinch roller is moved to the capstan. A temporary stop mechanism for a tape recorder, characterized in that the pause mechanism is selectively brought into pressure contact with the tape recorder.