JPS6037726Y2 - Cassette holder vertical movement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mechanism for supporting and vertically moving a cassette holder in a cassette tape recorder.

For example, if the vertical movement of the cassette holder is configured such that the cassette support pin is supported by a cam plate, and the slope of the cam is used as a guide to move the cassette holder to the lower recording/playback position at the valley and to the upper standby position at the peak, the support pin Surface contact with the slope caused a lot of resistance, especially when pushing up from a lower position to an upper position, making it impossible to obtain a smooth operating feel, and causing rattles and breakdowns.

In addition, when a cam is used, it is necessary to move the cam plate according to the length of the slope.

The present invention has been proposed in view of the above-mentioned drawbacks, and includes a cassette holder that is vertically movably supported between an upper standby position and a lower recording/playback position. In addition to adopting a holder support mechanism that stably supports the cassette, the second support pin is moved from an upper position to a lower position in conjunction with insertion of the cassette, and the first support pin is moved from an upper position to a lower position in conjunction with this, and Conversely, by moving the first support pin from the lower position to the upper position, the second support pin is moved from the lower position to the upper position in conjunction with the first support pin, so that the cassette holder is moved from the upper position to the lower position using one as the operation source. It is characterized in that it obtains the above-mentioned first
A lever member is used to move the support pin upward and downward, especially from the lower position to the upper position, and the upper standby position is supported by the lever member, thereby stably supporting the cassette holder. It is characterized by ensuring smooth vertical movement.

The present invention will be described in detail below based on an illustrative embodiment.

Reference numeral 1 denotes a cassette holder, and the cassette holder 1 is supported so as to be movable up and down between an upper standby position and a lower recording/playback position, and a side surface 2 of the holder has a first cassette holder that supports the cassette holder 1 in upper and lower positions. The support pin 3 and the second support pin 4 are erected.

The second support pin 4 is supported by a support portion 5a of the chassis side plate 5, and is supported by a spring S1 that elastically supports the cassette 8 as it is inserted.
The cassette is moved forward against the cassette and released when retreating, and when the cassette moves forward, it falls under the guidance of a cam 6 provided on the chassis side plate 5, allowing the holder 1 to move to the upper recording/playback position together with the first support pin 3. do.

On the other hand, a lever member 9 for supporting the first support pin 3 upwardly and an operation plate 7 for operating the lever member are provided, and the operation plate 7 is slidably supported by the chassis side plate 5 and always applies a backward force by a spring S2. The lever member 9 is connected by a connecting rod 11 that engages with the second support pin 4 so as to move in conjunction with the movement of the second support pin 4 as the cassette is inserted, and rotates the lever member 9 in conjunction with the forward movement of the second support pin 4. A retaining portion 7a is provided which is movable with the lever member 9, and allows the first support pin 3 to fall by the rotation of the lever member 9, thereby cooperating with the fall of the second support pin 4. The configuration is such that the movement of the holder 1 from the upper to the lower recording/reproducing position is obtained.

A locking means is provided to maintain the forward position of the operation plate 7, and the locking means includes, for example, a lock lever 17 and an electromagnet 1 for operating the lock lever 17, as shown in the figure.
8, when the operation plate 7 moves forward, the locking part 7b of the operation plate 7 and the end locking part 17a of the lock lever 17 lock to hold the operation plate 7 in the forward position, and the electromagnet 18 The structure is such that the lock is released by the operation of (during the cassette ejection operation) and the operating plate 7 is allowed to retreat by the spring S2, and the lever member 9 is rotated to return by the retreating of the operating plate 7.
The lever action of the return rotation of the lever member pushes the first support pin 3 upward again from the lower side, and as the first support pin 3 moves upward, the cassette holder 1 and the second support By moving the pin 4 upward and releasing the second support pin 4 from the cam 6, the support part 5
A is moved back according to the spring S1, and the cassette is ejected by the back movement.

At this time, the second support pin 4 again slides into the tip hook portion 11a of the connecting rod 11.

Through the above steps, the cassette holder 1 is re-supported at the upper standby position by the first and second support pins 3 and 4.

As shown in the figure, the free end of the lever member 9 is elastically supported in the return rotation direction by a spring S3, or the free end of the lever member 9 is rotated against the operating plate 7. Either engage and hold it in the engagement hole groove drilled in 7, or hold it with the clamping pin 7.
A locking part 7 that is held at d or engaged only when returning
e is provided so that the operating plate 7 moves forward and backward without using a spring.

As another example, a case will be shown in which the operation of the operation plate 7 is also used to control the movement of the head plate 12.

That is, a lever member 10 is interposed between the head plate 12 and the operation plate 7 to transmit the backward movement of the operation plate 7 to the head plate 12 for operating the head plate 12 elastically supported in the direction of the recording/reproducing position. Either one end of the operating portion is brought into contact with the slider 14 of the head plate 12 and the other end of the operating portion is brought into contact with the engaging portion 7C of the operation plate 7, or the operation plate is made in the same manner as the lever member for operating the first support pin. 7
The lever member 10 is rotated when the operation plate 7 is retreated, and the rotation of the lever member 10 causes the head plate 12 to retreat to the standby position.

Therefore, the present invention provides a cassette holder that is vertically movably supported between an upper standby position and a lower recording/playback position.
It can be stably supported with the support pin and the second support pin,
The second support pin is moved from the top to the bottom in conjunction with the insertion of the cassette, and the first support pin is moved from the top to the bottom in conjunction with this, and conversely, the first support pin is moved from the bottom to the top. By moving the cassette holder, the second support pin is moved from the lower side to the upper side in conjunction with this movement, and the first support pin The lever member can be used to move the cassette holder upward and upward, especially from the lower to the upper.The lever action ensures smooth vertical movement of the cassette holder, ensuring smooth vertical movement without failure. made possible.

Further, unlike the case where the holder support pin is moved up and down on the slope of the cam plate, it can be moved without play, and the movement stroke is short, which also meets the demand for miniaturization.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the operating mechanism of the cassette holder of the present invention, FIGS. 2A and 2B are side views showing the same operating state, and FIGS. FIG. 4B is a plan view showing another example in which the lever member is applied to the head plate, and FIGS. 4A and 4B are side views showing an example of the operating mechanism of the lever member. 1... Cassette holder 3... First support pin, 4... Second support pin, 5a... Support part, 5... Chassis side plate, 6...Cam, 7...Operation plate, 9...Lever member for operating cassette holder, 10
... Lever member for head plate operation.

Claims (1)

[Scope of utility model registration request] In a cassette type tape recorder equipped with a cassette holder that is vertically movably supported in an upper standby position and a lower recording/playback position, the cassette holder has a side portion of the cassette holder that supports the cassette holder in the upper standby position and the lower recording/playback position. The second support pin is configured to be moved from the upper support position to the lower support position as the cassette is inserted, and the movement of the second support pin A lever member that rotates in conjunction with the lever member is provided, and the lever member supports the first support pin upward in the upper standby position, and is configured to allow the first support pin to move downward by the rotation. to move the cassette holder from the upper support position to the lower recording/playback position; on the other hand, an operation plate is provided that interlocks with the movement of the second support pin, and the lever member moves in conjunction with the movement of the operation plate. A lock means is provided for locking the moving position of the operation plate, and when the lock means is released, the operation plate returns, and in conjunction with the return, the lever member is rotated to return. The cassette holder has a structure in which the first support pin is pushed up together with the cassette holder by the return of the lever member, and the second support pin is accordingly pushed up from the lower side to the upper side to obtain a re-supporting position. Operating mechanism.