JPH042447Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a cassette holder mechanism for a tape recorder, and more specifically, it securely holds down the cassette inserted into the cassette holder when the cassette holder is closed, and holds this hold down when the cassette holder is opened. The present invention relates to a tape recorder cassette holder mechanism configured to release the cassette holder mechanism.

BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, a cassette inserted into a cassette holder was held down using the elastic force of a synthetic resin leaf spring formed integrally with the cassette holder. However, with this, the ability was insufficient, and it was difficult to obtain stable ability due to wear and tear. For this reason, it was not possible to hold down the cassette with strong force, and the cassette moved slightly due to rotation of the reel, which had a negative effect on performance. This is the first problem.

In the conventional cassette holder, the cassette is mounted on the tape recorder body and ejected by the cassette holder, which rotates around a fulcrum pin, and the cassette moves while changing its angle of inclination. For this reason, when the cassette is installed, the reference hole 2 of the tape cassette 1 may not be inserted into the positioning pin 4 of the tape recorder main body 3, as shown in FIG. 4 and the cassette positioning sled 5, the positioning pin 4 and the reference hole 2 became loose and could not be ejected. This tendency was particularly noticeable when a long positioning pin with a built-in reverse quick sensor was used. This is the second problem.

Purpose of the invention The present invention was made to solve the first problem mentioned above.The purpose of the invention is to provide a tape that can reliably hold down the tape cassette mounted on the reel stand of a tape recorder with stable force. An object of the present invention is to provide a cassette holder mechanism for a recorder.

Summary of the invention In order to achieve the above-mentioned objects, the present invention includes: a fixed support plate provided with a movement guide section for guiding the movement of a cassette holder; a holder fulcrum plate rotatably supported by the fixed support plate; The cassette holder is rotatably supported on the holder fulcrum plate, the cassette holder is rotatably supported on the cassette holder, and the cassette holder is hung between the holder fulcrum plate and the cassette holder, and a tension spring that urges the cassette holder in a direction to press the tape cassette inserted into the cassette holder; and a contact portion that abuts the abutted portion, and when the cassette holder is closed, the cassette retainer presses the tape cassette due to the urging force of the tension spring, and when the cassette holder is opened, the tape cassette is pressed against the tape cassette. When the abutting portion abuts the abutted portion, the cassette retainer moves against the biasing force of the tension spring to a relief position where it does not press the tape cassette.

With the above configuration, the tape cassette mounted on the reel stand of the tape recorder can be
It is possible to hold it down reliably with stable strength.

Embodiment An embodiment of the present invention will be described below based on the drawings.

First, the overall configuration will be described with reference to FIGS. 2 and 3. The cassette holder mechanism consists of a square frame-shaped cassette holder 11, left and right side plates arranged on the outside of the side plates of this cassette holder 11, and connections connecting these. A holder fulcrum plate 12 consisting of a member, and a pair of left and right cassette retainers 1 provided inside the left and right side plates of the cassette holder 11.
3, and a pair of left and right tension springs 1 hung between the cassette retainer 13 and the holder fulcrum plate 12.
4, and a pair of left and right fixed support plates 16 fixed to the mechanical board 15 of the tape recorder main body at both sides of the cassette holder 11.

As shown in FIGS. 4 and 5, the cassette holder 11 is formed into a square frame shape from left and right side plates 18, upper and lower upper connecting members 19 connecting the both side plates 18, and a lower connecting member 20 with an L-shaped cross section. has been done. A transparent or translucent window (not shown) is provided in the front opening (on the right side in FIG. 5). A guide piece 21 is provided inwardly protruding from the side plate 18 on the rear surface. It is configured to be inserted into. In addition, at predetermined positions at the rear and center portions of both side plates 18,
A guide pin 23 and a fulcrum shaft 24 protruding outward on the left and right sides are integrally provided, and a pin hole 25 is formed inside at a predetermined position below the fulcrum shaft 24. Also, on the inside of the side plate 18, there is a clamping piece 26 for clamping the cassette retainer 13 between the side plate 18.
are integrated.

Next, the holder fulcrum plate 12 is attached to the side plate 18 of the cassette holder 11, as shown in FIGS.
It is composed of both side plates 27 arranged on the outside of the body, and a lower connecting member 28 that connects these plates. In the upper part of the front part of the side plate 27, a through hole 29 is rotatably fitted to the fulcrum shaft 24 (FIG. 5) of the cassette holder 11, and in the lower part of the front part, a through hole 3 is provided.
0, and a through hole 31 to which the tension spring 14 is fixed is provided at the lower part of the rear part. Note that an inclined surface 32 is formed at the rear of the side plate 27.

As shown in FIGS. 8 and 9, the cassette retainer 13 is composed of a retainer member 34 having a protrusion 33 that comes into contact with the cassette 1, and a lever 35 that is integrally formed with the retainer member 34 via a step. has been done. At a predetermined position on the front of the lever 35,
Through hole 25 (fifth hole) of the cassette holder 11
A fulcrum shaft 36, which is rotatably fitted in FIG. 1, is provided facing outward. Further, a through hole 37 to which the tension spring 14 is fixed is formed at the rear of the lever 35, and a guide piece 38 for regulating the position of the cassette 1 to be inserted is directed inward at a predetermined position at the rear. It is installed protrudingly. And this information piece 3
In the vicinity of 8, a projection 39 having a circular cross section is provided to protrude outward.

As shown in FIGS. 10 and 11, the fixed support plate 16 consists of a plate-shaped support plate 40, which is fixed to the mechanical board 14 by a bend 41 at the rear. A substantially horizontal guide groove 42 is formed in the upper part at a predetermined position as shown in FIG. 11, and the guide pin 23 of the cassette holder 11 is configured to engage with and move in this guide groove 42. There is. Also, in the lower part of the front part, there is a through hole 30 of the holder fulcrum plate 12.
(FIG. 7) is provided with a fulcrum shaft 43 that is rotatably fitted.

To assemble each member described above, as shown in FIGS. 2 and 3, the side plate 27 of the holder fulcrum plate 12 is fitted onto the outside of the side plate 18 of the cassette holder 11 by utilizing its elastic deformation, and the fulcrum shaft of the side plate 18 is fitted. 24 is fitted into the through hole 29. Then, fit the cassette holder 13 between the inner side plate 18 of the cassette holder 11 and the clamping piece 26, fit the fulcrum shaft 36 of the cassette holder 13 into the pin hole 25 of the cassette holder 11, and then attach the cassette holder 13 and the holder. The rear portion of the fulcrum plate 12 is connected to each other by a tension spring 14. Next, the guide pin 23 of the cassette holder 11 connected and assembled in this manner is fitted into the guide groove 42 of the fixed support plate 16, and the fulcrum shaft 43 is fitted into the through hole 30 of the holder fulcrum plate 12, respectively. When the fixed support plate 16 is fixed to the mechanical board 15, the cassette holder 11, holder fulcrum plate 12, and cassette retainer 13 are set on the mechanical board 15.

In this assembled state, the cassette holder 11
is supported by the fixed support plate 16 via a guide pin 23 and supported by the holder fulcrum plate 12 via a fulcrum shaft 24 . The holder fulcrum plate 12 is rotatably supported by a fixed support plate 16 via a fulcrum shaft 43, and the cassette retainer 13 is attached to the fulcrum shaft 3.
6 and is supported by the cassette holder 11 via the holder support plate 16 via the tension spring 14.
is connected to. When the cassette holder 11 is closed as shown in FIG.
6 is disposed approximately in the vicinity of a vertical line 44 passing through the axis of the fulcrum shaft 43. When the cassette 1 is not inserted, the protrusion 39 of the cassette retainer 13 is biased by the tension spring 14 and is pushed against the holder fulcrum plate 1.
When the cassette 1 is inserted, it is pulled away from the inclined surface 32 against the biasing force of the tension spring 39.

Next, the operation of the cassette holder mechanism constructed as above will be explained with reference to FIG. 3 and FIGS. 12 to 14.

As shown in FIG. 3, when the cassette 1 is inserted into the cassette holder and the cassette holder is closed, the protrusion 39 of the cassette retainer 13 is attached to the holder fulcrum plate 12.
It is not in contact with the inclined surface 32 of. Therefore, the cassette holder 13 is urged to rotate counterclockwise about the fulcrum shaft 36 with respect to the cassette holder 11, so that the cassette holder 13 uses its protrusion 33 to hold the cassette 1 against the guide piece 21 of the cassette holder 11. ,3
8, that is, it is pressed against the cassette holder 11.

Next, when the cassette holder 11 begins to open in the direction of arrow a in FIG. 12, its guide pin 23 moves within the guide groove 42 of the fixed support plate 16 from the rear toward the front. The fulcrum shafts 24 and 36 connected to the cassette holder 11 also move in accordance with the movement of the cassette holder 11. However, the fulcrum shaft 24
is also connected to the holder fulcrum plate 12, and since this holder fulcrum plate 12 rotates clockwise around the fulcrum shaft 43, the fulcrum shaft 24 maintains a constant distance from the guide pin 23 while rotating the fulcrum shaft. Move on an arc centered at 43. The fulcrum shaft 36 is determined by the distance between the fulcrum shaft 36 and the guide pin 23 and the fulcrum shaft 3
6 and the fulcrum shaft 24 while maintaining a constant distance relationship.

However, since the guide groove 42 is almost horizontal, and the fulcrum shaft 24 is located near the vertical line 44 passing through the center of the fulcrum shaft 43 as described above, and the pin 23 and the fulcrum shaft 24 are at almost the same height, the opening is difficult. At the beginning of the process, the guide pin 23 and fulcrum shaft 24 of the cassette holder 11 move horizontally by approximately the same distance, and as a result, the cassette holder 11 moves horizontally while maintaining approximately the same height position as shown in FIG. do. In this state, the protrusion 39 of the cassette holder 13 is not in contact with the inclined surface 32 of the holder fulcrum plate 12, which rotates clockwise. Therefore, the cassette 1 is held down by the cassette holder 13, and the tape recorder body side It moves almost horizontally on the positioning sled 5. That is,
At the beginning of opening of the cassette holder 11, the cassette 1 moves parallel to the positioning pin of the cassette, and the cassette 1 is easily pulled out from this positioning pin.

As shown in FIG. 13, the cassette holder 11 gradually begins to tilt from this state, but the protrusion 39 of the cassette retainer 13 is still attached to the holder fulcrum plate 1.
The cassette 1 does not come into contact with the inclined surface 32 of the cassette holder 1, and the cassette 1 is still held in the cassette holder 1 by the cassette retainer 13.
It is suppressed to 1.

Then, a little before the opening shown in FIG.
The cassette retainer 13 is rotated clockwise along the inclined surface 32 against the tension spring 14, and the pressure on the cassette is released.

Then, at the final stage shown in the 14th stage, the holding of the cassette 1 by the cassette holding 13 is completely released.
The cassette 1 is ejected by an eject mechanism (not shown).

On the other hand, when the cassette holder 11 is closed and the cassette 1 is mounted on a tape recorder, the operations described above are reversed. That is, first, the protrusion 39 of the cassette retainer 13 and the holder fulcrum plate 1 are
2 is disengaged from the inclined surface 32, and the cassette retainer 13 presses the cassette 1 by the biasing force of the tension spring 14 as described above. At the final stage of closing, the cassette 1 moves horizontally on the positioning sled 5 on the main body side as described above, is easily inserted into the positioning pin, and is mounted in a predetermined position.

Effects of the invention As explained above, according to the invention, when the cassette holder is closed, the cassette holder is inserted into the cassette holder by the biasing force of the tension spring applied between the holder fulcrum plate and the cassette holder. The tape cassette is configured to be pressed against the tape cassette. The pressing of the tape cassette (that is, the holding down of the tape cassette) is not done by a spring force based on the elastic deformation of a leaf spring integrally formed with the cassette holder, but by a tension spring. Therefore, it is highly durable as it does not change over time due to long-term use.
Further, the tape cassette is not deformed due to temperature changes, and as a result, the tape cassette can be held securely with stable strength at all times.
For this reason, the cassette mounted on the reel stand will not move slightly due to rotation of the reel or the like, which will adversely affect the reproduced sound. And the spring force of the tension spring can be changed freely as needed.
Furthermore, the tension spring can be replaced at will.

Furthermore, when the cassette holder is opened, the contact part provided on the holder fulcrum plate contacts the abutted part provided on the cassette holder, so that the cassette holder does not press the tape cassette inserted into the cassette holder. It is configured to move to the escape position against the biasing force of the tension spring. Therefore, when the cassette holder is opened, the holding of the tape cassette by the cassette holder is reliably released by the abutting part coming into contact with the abutted part and moving the cassette holder to the escape position, so that the tape cassette cannot be ejected. It is very easy to do so, and the surface of the tape cassette is not scratched by the cassette holder. Moreover, since the above-mentioned restraint can be released slightly before the tape cassette is ejected, soft ejection becomes possible.

[Brief explanation of the drawing]

1A and 1B are explanatory diagrams of a conventional example showing how to attach and detach a cassette to a positioning pin when it is attached to a tape recorder body, and FIGS. 2 to 14 illustrate an embodiment of the cassette holder mechanism according to the present invention. Figure 2 is the rear view, Figure 3 is the second
4 and 5 are diagrams in which only the cassette holder in Figures 2 and 3 are shown in solid lines, and Figures 6 and 7 are also diagrams in which only the holder fulcrum plate is shown in solid lines. Figures 8 and 9 are diagrams in which only the cassette retainer is shown in solid lines, Figures 10 and 11 are diagrams in which only the fixed support plate is shown in solid lines, and Figures 12 to 14. The figure is the third
FIG. 6 is an operational explanatory diagram showing the process in which the cassette holder is opened from the state shown in the figure. In addition, in the symbols used in the drawings, 1...tape cassette, 11...cassette holder, 12
...Holder fulcrum plate, 13...Cassette retainer, 1
4...Tension spring, 16...Fixed support plate, 24...
Fulcrum shaft (fulcrum), 32... Inclined surface (contact part), 36
...Fulcrum shaft (fulcrum), 39...Protrusion (abutted part),
42... Guide groove (movement guide part), 43... Fulcrum shaft.

Claims (1)

[Claims for Utility Model Registration] A fixed support plate 16 having a movement guide section 42 for guiding the movement of the cassette holder 11; a holder fulcrum plate 12 rotatably supported by the fixed support plate 16; The cassette holder 11 is rotatably supported by the fulcrum plate 12; the cassette retainer 13 is rotatably supported by the cassette holder 11; the holder fulcrum plate 12 and the cassette retainer 1.
3 and the cassette holder 11
a tension spring 14 that urges the cassette retainer 13 in a direction that presses the tape cassette 1 inserted therein;
and the abutted portion 3 provided on the cassette retainer 13.
9, and a contact portion 32 provided on the holder fulcrum plate 12 and abutting against the abutted portion 39 when the cassette holder 11 is opened, and when the cassette holder 11 is closed, the tension spring 14 Due to the urging force, the cassette holder 13 presses the tape cassette 1, and when the cassette holder 11 is opened, the abutting portion 32 abuts the abutted portion 39, thereby causing the cassette holder 13 to press against the tape cassette 1. A cassette holder mechanism for a tape recorder configured to move against the biasing force of the tension spring 14 to a relief position where the tape cassette 1 is not pressed.