JPH0690838B2 - Cassette stabilizer device for tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a cassette half when a door provided with a pocket for accommodating the cassette half is closed to set the cassette half on the tape running mechanism. The present invention relates to an improvement of a cassette stabilizer device of a tape player that is pressed in the direction of a tape running mechanism to prevent vibration of a cassette half when the tape is running.

[Conventional technology]

A conventional stabilizer device for a tape player of this type is shown in FIG. 8 and will be described below.

A chassis 1 is a mechanical chassis 3 to which a tape running mechanism such as a reel shaft 2 is attached, and a front panel 4 is attached to the front surface.

A cassette support plate in which a door 6 supported by a shaft 5 is openably and closably attached to the front panel 4, and a vibration-proof plate 7 formed of a vibration-absorbing rubber or the like is attached so as to face the door 6. 8 is attached to the mechanical chassis 3.

Further, an elastic pressing plate 9 is provided inside the door 6. Ten
Is the hood.

Now, when the door 6 is opened, the cassette half 11 is inserted into the door 6 and then the door 6 is closed, the cassette half 11 is set in the tape running mechanism and, at the same time, the elastic pressing plate 9 pushes the cassette half 11 to prevent it. Press contact with the vibration plate 7.

Therefore, the tape in the cassette half 11 is run by the tape running mechanism, and the vibration of the cassette half 11 caused by the rotation of the reel around which the tape is wound is prevented.

[Problems to be solved by the invention]

In the conventional cassette stabilizer device, the cassette 11 is pressed against the vibration isolating plate 7 by the elastic pressing plate 9 when the door 6 is closed. Therefore, during the closing of the door 6, it is necessary to press the cassette half 11 by the elastic pressing plate 9.

Therefore, when the door 6 is closed by the power of a motor or the like, a large power is required due to the load.

Further, since the cassette half 11 is pressed at the same time as the door is closed, the cassette half 11 is sandwiched by the vibration-proof plate 7 and the elastic pressing plate 9 before being set at the proper position. There was a defect that it was set from the normal position and a sufficient vibration isolation effect could not be obtained.

[Object of the Invention]

The present invention has been made to solve the above-mentioned drawbacks of the conventional cassette stabilizer device of a tape player. The door opening / closing operation and the cassette half pressing operation are performed separately at different timings so that the door is completely removed. By configuring the cassette half to be pressed after it is closed, the cassette half can always be set in the correct position, preventing vibration due to improper mounting of the cassette half and reducing the load when opening and closing the door. The purpose is to

[Outline of Invention]

In order to achieve the above-mentioned object, the present invention comprises a door having a pocket for accommodating a cassette half and an opening / closing mechanism for opening and closing the door, and at the same time as closing the door, the cassette half is attached to the tape running mechanism. In such a tape player, a pressing member provided in the pocket for pressing the cassette half housed in the pocket, and a pressing member fixing means for fixing the pressing member so that the pressing member presses the cassette half. And driving means for driving the pressing member fixing means, and after the door is closed, the pressing member fixing means is driven by the driving means so as to press the pressing member against the cassette half. It is characterized by having done.

[Embodiment of the Invention] An embodiment of the present invention will be described with reference to Figs.

Reference numeral 20 denotes a drive motor, the rotation of which is transmitted to a gear 23 that rotates coaxially with the encoder 22 via a pulley 21, a speed reduction mechanism such as a belt, and is transmitted to a cam shaft 26 by side gears 24 and 25. The hollow cylindrical cam 27 and the peripheral cam 28 are rotated in the direction of arrow A.

Reference numeral 29 denotes a rotating piece that is loosely fitted to the shaft 30, and when the contact portion 29a is in the missing circle portion of the cylindrical cam 27, the rotating piece 29 is pulled by a spring 31 wound around the shaft 30. It moves in the direction of arrow C in FIG.

Then, the missing circular portion of the missing cylindrical cam 27 has passed, and its end is the contact portion.
When it comes into contact with 29a, the contact portion 29a is pushed by the end portion of the contact portion 29a and the arrow B
The rotating piece 29 is rotated in the direction of, and thereafter the contact portion 29a slides on the peripheral surface of the hollow cylindrical cam 27.

Reference numeral 32 denotes a rotating arm fixed to the shaft 30, and its roller 33 rubs the outer surface of the peripheral cam 28, and is pulled by a spring 34 installed on the rotating arm 32 so that the rotating arm 32 moves. Rotate according to the shape of.

Reference numeral 35 denotes a first arm in which a long hole 37 slides on a pin 36 provided on the upper surface of the frame 19, and a bent piece 35 bent downwardly.
The spring 38 is pulled by the spring 38 and is in contact with the peripheral surface of the cylindrical cam 27.

Therefore, when the missing circle portion of the missing cylinder cam 27 reaches the position of the bent piece 35a, the first arm 35 is pulled by the spring 38 and moves.

Reference numeral 39 denotes a second arm in which a long hole 41 slides on a pin 40 provided on the upper surface of the frame 19, and a protruding piece 35b of the first arm 35 is inserted into the hole 39a, and a second arm Spring 4 in between
2 is mounted.

Therefore, the second arm 39 moves by being pulled by the spring 42 when the first arm 35 moves leftward in FIG. 4, but moves rightward when the first arm 35 moves rightward. 35b
The right side of the hole 39a is pushed to move.

In FIG. 1, 43 is a door, which is pivotally supported by a shaft 45 of a connecting arm 44, and the connecting arm 44 is pivotally supported by a shaft 46 of the frame 19.

This door 43 has a pocket 43 for accommodating the cassette half 18.
a is formed, and the pressing plate 48 is axially supported by the shaft 46 and is urged in the direction to open the door 43 by a spring 47 wound around the shaft 46.
Is housed in the door 43.

The upper end of the pressing plate 48 is an engaging portion 48a,
A pusher 49 that presses the cassette half 18 with the upper and lower contact portions 49a is pivotally supported by a shaft 50.

A protruding arm 43b is formed on the door 43, and the protruding arm 43b is connected to the arm 29b of the rotating piece 29 by the shaft 51, so that the door 43 is opened and closed according to the rotation of the rotating piece 29.

An engaging piece 53 having an engaging portion 53a that engages with the engaging portion 48a of the pressing plate 48 is pivotally supported by a shaft 54 on the second arm 39, and an engaging portion is supported by a spring 55 wound around the shaft 54. It is urged to move down 53a.

A projection 53b is formed on the engaging piece 53, and the projection 5b
3b is mounted on the push-up piece 56 fixed to the shaft 30.

Reference numeral 57 is a vibration-damping rubber damping material attached to the support portion 19a of the frame 19, and the cassette half 18 is sandwiched between it and the pressing element 49 to prevent its vibration, and 58 is a rotating piece 29. The switch is operated by being pressed by the pressing portion 29c, that is, the switch is operated when the opening of the door 43 is finished, and stops the rotation of the motor 20.

Next, the operation of this cassette stabilizer device is shown in FIG.
The case where the cassette half 18 is inserted from the position of the virtual line to the position of the solid line from the opened state of the door 43 in FIG. 5 and the instruction for closing the door or playing is operated will be described.

By this operation, the motor 20 rotates, its rotation is decelerated and transmitted to the shaft 26, and the hollow cylindrical cam 27 and the peripheral surface cam 28 rotate in the direction of arrow A.

Then, the end of the missing circular portion of the missing cylindrical cam 27 contacts the contact portion 29a and pushes it, so that the turning piece 29 turns in the direction of arrow B,
Since the arm 29b pulls the protruding arm 43b, the door 43 is rotated in the closing direction.

After the closing is completed, the contact portion 29a has a missing cylindrical cam 27.
Since the rotating piece 29 does not rotate any further by sliding on the circumferential surface of the pressing plate 48, and the pressing plate 48 is biased by the spring 47 in the direction of opening the door 43, the pressing element 49 causes the cassette half 18 to move. Never press.

Further, the rotation of the shaft 26 continues, and the state shown in FIG. 2 is obtained.

Then, the cylindrical cam 2 is cut off at the position of the bent piece 35a of the first arm 35.
7 reaches, the first arm 35 is pulled by the spring 38 and moves to the right in FIG. 2, and the projecting piece 35b pushes the right side of the hole 39a, so that the second arm 39 also Move to the right.

Therefore, the engagement piece 53 pivotally supported by the shaft 54 of the second arm 39 also moves to the right.

At this time, since the roller 33 is tilted by the peripheral cam 28,
Pulled by 34, the rotating arm 32 rotates in the direction of arrow B.

The rotation is transmitted to the shaft 30 to rotate in the direction in which the tip of the push-up piece 56 is lowered, so that the engagement portion 53a of the engagement piece 53 is lowered by the bias of the spring 55.

By the movement of the engaging piece 53 to the right and the lowering of the engaging portion 53a, the engaging portion 53a reaches a position where it engages with the engaging portion 48a of the pressing plate 48 as shown in FIG.

Then, as shown in FIG. 3, when the rotation of the shaft 26 is further advanced, the bent piece 35a is pushed by the broken circle portion of the broken cylindrical cam 27, and the first arm 35 resists the spring 38. Move to the left in FIG.

This movement is transmitted to the second arm 39 by the spring 42,
Since the engaging piece 53 is moved to the left by moving the second arm 39 to the left, the engaging portion 53a causes the pressing plate 48 to move to the spring 47.
Rotate against.

Therefore, the pressing element 49 attached to the pressing plate 48 presses the cassette half 18 and presses it against the vibration isolator 57, preventing the cassette half 18 from vibrating.

At this time, the amount of movement of the first arm 35 depends on the engagement piece 53
The operation of 48 causes the pusher 49 to move more than necessary to push the cassette half 18.

This extra movement amount is absorbed by extending the spring 42, and the cassette half 18 is reliably pressed by the pressing element 49.

Further, when the door 43 is opened and the cassette half 18 is to be taken out, the motor 20 is reversely rotated by the operation of the eject command, the operation is performed in the reverse order to the above, and the door 43 is opened to take out the cassette half 18. Is something that can be done.

As described above, the cassette half 18 is pressed against the vibration isolator 57
When the cassette half 18 was vibrated by pressing with, the damping characteristics as shown in FIG. 6 (b) were obtained.

On the other hand, when there is no cassette stabilizer device, as shown in FIG. 7A, the time until the attenuation is long, and the cassette stabilizer device according to the present invention absorbs the vibration of the cassette in a short time. I understand.

FIG. 7 shows the vibration characteristics of the cassette half 18, and it can be seen that the one with the same figure d has less vibration at each frequency as compared with the one without the cassette stabilizer device of the same figure c.

〔The invention's effect〕

As described above, according to the present invention, the cassette half set in the tape running mechanism is pressed by the pressing member to prevent its resonance and vibration and prevent the deterioration of the reproduced sound pressure frequency characteristic due to the vibration. .

Then, when the cassette half is closed by the door and the cassette half is set on the tape running mechanism, the cassette half is not pressed by the pressing member, so that the cassette half is set at the proper position on the tape running mechanism.

After that, since the cassette half is pressed by the pressing member,
The vibration-proofing effect is obtained at the regular position, and the vibration-proofing effect is enhanced without causing any trouble such as extra vibration for running the tape at the irregular position.

Also, since the pressing member is in the retracted state when inserting the cassette half into the door pocket, it is easy to insert, and when closing the door, there is no need to press the cassette half, so the door is light and closes smoothly. It is possible,
There is an effect that the power for that is small and sufficient.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention when a door is opened, FIGS. 2 and 3 are side views showing a state until a cassette half is pressed, FIG. 4 is a plan view of the same, and FIG. 6 is an enlarged sectional view of the door portion, FIG. 6 is a vibration damping characteristic diagram, FIG. 7 is a frequency characteristic diagram of vibration, and FIG. 8 is a side view of a conventional cassette stabilizer device. 18 …… Cassette half, 27 …… Cylindrical cam, 28 …… Circumferential cam, 29 …… Rotating piece, 29a …… Contact part, 32 …… Rotating arm, 3
5 …… First arm, 39 …… Second arm, 42 …… Spring, 43
…… Door, 48 …… Pressing plate, 49 …… Pressing piece, 53 …… Engaging piece, 56 …… Pushing piece, 57 …… Vibration isolator.

Claims (1)

[Claims] 1. A tape player, comprising: a door having a pocket for accommodating a cassette half; and an opening / closing mechanism for opening / closing the door, wherein the cassette half is mounted on a tape running mechanism at the same time when the door is closed. A pressing member provided in the pocket for pressing the cassette half accommodated in the pocket; a pressing member fixing means for fixing the pressing member so that the pressing member presses the cassette half; and the pressing member fixing means. Cassette for a tape player, characterized in that the pressing member fixing means is driven by the driving means so as to press the pressing member against the cassette half after the door is closed. Stabilizer device.