JPS5931130B2 - Instant winding and rewinding device for tape recorders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating device for winding up and rewinding a tape in a tape recorder, and in particular, is capable of instantaneously performing these tape feeding operations during recording and reproducing operations.

It is well known that a tape recorder requires a mechanism for rapidly winding and rewinding the tape in order to locate the beginning of the recording/playback position on the tape for recording/playback operations and for repeating operations.

In conventional tape recorders operated by a push-button mechanism, these tape feed mechanisms are equipped with operation buttons for winding and unwinding operations, and the tape is normally moved for recording and playback. When winding up or rewinding the tape, each tape feeding state is obtained by operating the buttons in such a state that the normal running operating state is temporarily returned to the stopped state. That is, according to such a configuration,
Each of these winding and rewinding operations must be canceled by operating a separate stop button, and this cancellation also cancels the normal running state for recording and playback, so the next When performing a recording/playback operation, it was necessary to press the record/playback operation button again. Furthermore, as another example of the conventional device, each tape running operation is performed only while the winding and unwinding operation buttons are pressed down or the like,
Device configurations are known in which, when the button is released, the vehicle returns to a normal running state. This device can continuously shift from winding up or unwinding operation to normal running operation, or from normal running operation to constant speed forwarding operation, and is excellent in operability for cueing or repeating playback. In order to carry out this constant-speed feed operation, it has the disadvantage that it must be operated after the normal running operation is performed, or that the middle button, etc., must be continuously pressed during this fast-speed feed operation. . The most effective operating means in a tape recorder is the latter function in the conventional device, which allows continuous switching between normal running operation and rapid forwarding operation for cueing or repeating operations during recording or playback operations. In addition, in the case of tape winding or a considerably long fast feed distance, it is desirable to wait for the former function that can mechanically hold the constant speed feed operation at the operating position. is desirable. Therefore, the present invention provides an operating device having both of the above-mentioned functions for operating a recorder. This was achieved by utilizing the main mechanical parts of the previous mechanism, and the mechanism is characterized by the fact that it can be operated with relatively light operating force.

The content of the present invention will be further clarified by the following description of the illustrated embodiments. Engagement protrusions 2a, 3a are attached to the locking plate 1 having engagement grooves 1a, 1b, and 1c and a releasing inclined piece 1d.
and a wind-up operation key 2 with 4a, a recording/playback operation key 3 and a wind-back operation key 4 which are integrated with the operation panel 30, a stop operation key 5 with an abutment piece 5a, and another recording operation key 6, which are orthogonal to each other. They are arranged so that they cross each other in the direction that they are directed.

A spring 7 is attached to the locking plate 1 to pull the locking plate 1 in the lower left direction in the figure. Further, each of the operation keys 2 to 6 has a spring 2b, 3b, 4b, 5b that pulls it in the lower right direction in the figure.
and 6b are arranged, respectively. The relationship between the locking plate 1 and each of the operation keys 2 to 4 is such that the locking plate 1 has its respective engagement grooves 1a to 1c in which each of the operation keys 2 to 4 has its respective engagement protrusion 2a to 4. 4a are the springs 2b to 4 of these operation panels.
By movement in the direction opposite to b, the locking plates 1 are slid along the outer edges of the grooves and moved against the acting force of the springs 7, and are arranged so as to fit into each other, and in particular, Engagement groove 1
The height of the outer edges of a and 1c is configured to be lower than that of the engagement groove 1b by a width l, so that the movement position of the locking plate 1 when the engagement groove 1b and the engagement protrusion 3a are engaged is adjusted. Here, the engagement grooves 1a, 1c are prevented from engaging with the engagement protrusions 2a, 4a. Further, the relationship between the inclined piece 1d and the abutment 5a is such that when the stop operation key 5 is moved in a direction against the spring 5b, the abutting piece 5a slides on the inclined piece 1d and moves the locking plate 1 in the upper right direction in the figure. It is arranged like this. A weak spring 10 is mounted between the extended tip of the front recording/reproducing operation key 3 and the operating plate 9 on which the magnetic head 8 is mounted, so that the operating key 3 and the operating plate 9 are normally integrally connected. It is constructed so that it can be moved.

That is, the operating plate 9 has elongated holes 9a, 9a formed in a part thereof, through which shafts 11, 11, which stand up from the stationary part of the device, are inserted, thereby regulating the direction of movement thereof. Further, the operating plate 9 is provided with projecting pieces 9b and 9c, the free turning end of the member supporting the tape pinch roller 12 is brought into contact with the projecting piece 9b, and the other projecting piece 9c is is brought into contact with one end 13a of a fan-shaped plate 13 rotatably disposed near the extension of the recording operation key 6. The actuating plate 9 has an upright projecting piece 9d on its rear edge as a force-receiving portion that receives the force of a pair of levers 14 and 15, which will be described later, independently. A rod-like body (not shown) may be fixed and erect. The acting force receiving portion described above is located close to or in contact with the inner rotation range of the pair of levers 14 and 15. The other end of each of the levers 14 and 15 is a contact piece 2c formed by pulling up the negative part on the extension of the winding operation key 2, and the other end of the lever 14 and 15 is formed on the extension of the winding operation key 4. The contact pieces 4c are respectively brought into contact with the contact pieces 4c, which are formed by raising the parts.

Further, the relationship between the recording operation key 6 and the fan-shaped plate 13 is such that it is connected to one side edge 13b of the fan-shaped plate 13 and forms an engagement stepped portion 13c, and an extension of the operation key 6 is formed with respect to this component. The contact piece 6c formed by lifting up a part of the fan-shaped plate 13 is exposed.
The contact piece 6 is
c is in pressure contact with the side edge of the plate 13.

In addition, 16 is a tape, and 17 is a capstan shaft.
The operation of the apparatus of the present invention having such a configuration will be explained next. First, when the tape operation is stopped, the recording/playback operation key 3 is pressed.
is in the position shown by the dotted line in the figure, the operating plate 9 interlocked with it is in a position moved rightward in the figure, and the magnetic head 8 is in a position sufficiently retracted from the tape running area. From this state, when the recording/playback operation key 3 is pushed to the left in the figure against the force of the spring 3b, the engagement protrusion 3a moves into the engagement groove 1b.
While sliding on the outer edge of the locking plate 1, push the locking plate 1 toward the upper right in the figure, and after riding over the outer edge, it fits into the engagement groove 1b.

As a result, the operation key 3 is engaged and held at the pressed position, but when the operation key 3 is pressed, the actuation plate 9 is pulled by the spring 10 and moves integrally with the key 3, so that the magnetic head 8 comes into pressure contact with the tape 16 stretched over the running area.
On the other hand, due to the movement of the actuating plate 9, the pinch roller 12 also comes into pressure contact with the capstan shaft 17 with the tape 16 sandwiched therebetween as the supporting member, which had been previously blocked by the overhanging piece 9b, rotates. At this time, the prerecording/reproducing operation key 3 uses its extension to start the well-known electrical and mechanical tape feeding mechanism and connect the drive system, so that the tape 16 performs a normal running operation. If this operation is intended to record, press the recording operation key 6 before or after the operation.
is pressed against the force of the urging spring 6b.

With this operation, the contact piece 6c slides on the side edge of the fan-shaped plate 13 and rotates against the acting force of the spring 13d, so that the contact piece 6c overcomes the inclined edge 13b and engages with the stepped portion 13c. . Due to this engagement, even if the key 6 is released after being pressed, the key 6 is held at the pressed position, and in this state, the electric circuit is switched to the recording state. When performing a winding operation while the tape is running for recording or reproduction, the operation key 2 is pressed against the force of the spring 2b.

With this operation, the upright piece 2c pushes the negative end of the lever 14,
Since this is rotated counterclockwise in the figure around the shaft 11, the other end of the lever 14 comes into contact with the protruding piece 9d of the actuating plate 9, and by pushing it around, the actuating plate 9 is activated with a weak force. Pull it back to the right in the figure against the acting force of 10. Therefore, the magnetic head 8 and the pinch roller 12 are moved away from the tape running area, and the starting and driving force transmission system for the operation described above is constructed, and the desired tape feeding operation is performed. At the position where the locking plate 1 has fully moved back in the upper left and lower directions, the outer edges of the engagement grooves 1a or 1c have entered the movement range of the engagement protrusions 2a and 4a, so the locking plate 1 can be moved over the outer edges of the engagement grooves 1a or 1c. The engaging protrusion 2a or 4a engages with the engaging groove 1a or 1c and is held engaged in the pressing operation area. Therefore, in this case, even if the pressing force is released after pressing the operation key 2 or 4, these operations will continue until the stop operation key 5 is operated. As mentioned above, the greatest feature of the present invention is that the pair of levers 14, 1 are supported on the pair of shafts 11 so as to be rotatable independently of each other.
5, where the levers 14 and 15 come into contact with the inner rotation range,
One common acting force receiving portion 9d integrally provided on the actuating plate 9 is positioned, and the actuating plate is actuated by the vector of force applied to the actuating plate 9 by the recording/playback operation and the operation of the pair of levers 14 and 15. The vectors of the forces applied to the actuating plate 9 are approximately on the same line, and this line passes through the center of gravity of the actuating plate 9 during its sliding movement, thereby bringing the actuating plate 9 into the recording/playback set state. The recording/playback operation key 3 is configured integrally with the plate 30.

Thus, by operating the wind-up operation key 2 and the wind-back operation key 4 separately, one common acting force receiving portion 9d positioned in the inner rotation range of each lever 14, 15 is pressed, and the actuating plate is pressed. Since the sliding movement of 9 is made to operate through the center of gravity which is approximately on the same line as during the recording/playback operation, the actuating plate 9 is moved linearly and with approximately the same constant light acting force and approximately the same movement. This has the effect of making it possible to smoothly perform a sliding motion that is accurate and reliable in terms of distance.

[Brief explanation of the drawing]

The drawing is a perspective view of the main parts of the device of the present invention. 2... Winding operation key, 3... Recording/playback operation key 4... Rewinding operation key, 9...
- Operating plate, 14, 15... Renoma one.

Claims (1)

[Claims] 1 (a) An actuating plate 9 on which a magnetic head 8 is mounted, (b)
An operating plate 30 that acts on the operating plate 9 in order to move the magnetic head 8 to the tape pressing position, and (c) an acting force receiving portion 9d provided on a part of the operating plate 9, respectively, act independently and separately. The actuating plate 9 is pivotably supported independently on a pair of shafts 11 for retracting the actuating plate 9 in a linear direction from the recording/reproducing operation position against the acting force of the operating plate 30. a pair of levers 14 and 15; and (d) a pair of levers 1.
One common acting force receiving portion 9d integrally provided on the actuating plate 9 is positioned in the inner rotation range of the levers 14 and 15, and the actuating plate is rotated by recording and reproducing operations. 9 and each of the pair of levers 14
, 15, the vectors of the forces applied to the actuating plate 9 are approximately on the same line, and this line passes through the center of gravity of the actuating plate 9 during its sliding motion to bring it into the recording/playback set state. A recording/playback operation key 3 integrated with the operation plate 30 connected to the operation plate 9; (e) a winding operation key 2 connected to the lever 14; and (f) a winding operation key 4 connected to the lever 15. When the previous recording/playback operation key 3 is operated, the winding operation key 2 and the rewinding operation key 4 are
The actuating plate 9 having the magnetic head is moved by the separate operations of the pair of levers 14 and 15.
An instantaneous wind-up and unwind operation device for a tape recorder that is evacuated from a tape pressing position until the operating state is released.