JPS60175247A - Cassette tape recorder - Google Patents

Abstract

PURPOSE:To inhibit the opening of a cassette cover in a tape reproduction mode by using a lock lever interlocking tape reproducing action to prevent the revolving action of the cover. CONSTITUTION:A lock lever 16 is set slidably into the hollow part of a battery case of a cabinet and interlocks a reproduction button 5 via a reproduction coupling lever 12. Then the lever 16 engages an engagement part 18 of a cassette cover 2. Thus the locking function of the cover 2 is attained in an extremely simple constitution, in a tape reproduction mode. Therefore the cover 2 is never opened in the tape reproduction mode. This prevents a tape play and therefore avoids the damage of a head substrate part and a tape, etc.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a cassette tape recorder.

Conventional configurations and their problems In recent years, cassette tape recorders with built-in radio receivers have become more dense, multifunctional, and smaller.

There is an increasing trend toward thinner devices.

A conventional cassette tape recorder will be explained below with reference to FIGS. 1 to 3. Fig. 1 is a perspective view of a conventional cassette tape recorder, and Figs. 2 and 3 are side views for explaining its operation, with some parts cut away. 33 is a stop button/eject button for stopping the operation of the device; 34 is a tape cassette; 36 is a hinge shaft that forms the center of rotation between the main cabinet and the cassette lid. , 36 is a hinge, 37 is a spring hook integrally formed with the cassette lid 32, 38 is a fulcrum shaft integrally formed with the main cabinet 31, 39 is a toggle spring, 40 is a cassette eject lever, and 41 is a cassette. This is the fulcrum shaft of the take-out arm 40.

The operation of the cassette tape recorder configured as above will be described below.

First, when the stop/eject button 33 is pressed in the direction of arrow A in the operating state of the device (playback, fast forward 91 rewind, etc.), the operation of the device is stopped, and then the stop/eject button 33 is pushed again in the direction of arrow A. Then, the cassette ejection lever 40 rotates in the direction of arrow B around the fulcrum shaft 41, and if the tape cassette 34 is inserted, the tape cassette 34 is ejected in the direction of arrow C, and the ejection is stopped. It becomes possible. When the tape cassette 34 is in the cassette lid 32, the tape cassette 34 is ejected by pressing the stop/eject button 33 from the device stop state, so the tape cassette 34 comes into contact with the inner surface of the cassette lid 32, and the tape cassette 1 -34, but if there is no tape cassette, you will have to open it by hand. The cassette lid body 32 is attached to the main body cabinet 31 by a hinge 36, and is rotatable about the hinge shaft 36. Further, the toggle spring 39 has the effect of urging the rotation of the cassette lid body 32,
A fulcrum shaft 38 integrally formed on the main body cabinet 31 and a spring hooking rib 3 integrally formed on the cassette lid 32
7 are rotatably supported at both ends, and a coil portion near the center provides a spring effect, exerting a spring force in a direction that constantly pushes the fulcrum shaft 38 and the spring hooking rib 3 apart. Therefore, as is clear from FIGS. 2 and 3, when the cassette lid 32 is closed (FIG. 2), the direction is further closed, and when the cassette lid 32 is open (FIG.
A force is applied in the direction of opening further, providing a so-called toggle-type cassette lid body. As a result, the mechanism becomes complicated, and the number of parts increases, especially in small devices, which often obstructs the storage space for other functional parts. In addition, in the case of a toggle-type cassette lid, the cassette lid can be opened and closed regardless of the presence or absence of the tape cassette and whether or not it is in operation.
The cassette lid may open due to vibrations, shocks, etc. when carrying the cassette. When the cassette lid is open, the cassette lid cannot press the tape cassette against the mechanism, so when the device is stopped, the tape cassette can be inserted and removed, but when the tape is being played, the mechanism Since the head is inserted into the tape cassette, the tape cassette can be moved by the gap between the head and the head mounting hole of the tape cassette.
Problems such as misalignment of azimuth and damage to the tape may occur.

In addition, if any balancing force is applied to the device or external force is applied to the tape cassette in the above state, force will be applied directly to the head attachment portion of the mechanism, which may lead to damage to the mechanism.

OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a cassette tape recorder that has a simple structure and can prevent damage to the mechanism and prevent scratches on the tape to ensure reliable operation. The purpose is to provide the following.

Structure of the Invention In order to achieve the above-mentioned object, the cassette tape recorder of the present invention controls the rotational movement of the cassette cover by a lock lever slidably provided in the cabinet in conjunction with a lever that is linked to a playback button. It is characterized by a structure that restricts the opening of the cassette lid during playback.

DESCRIPTION OF EMBODIMENTS FIGS. 4 to 11 show an embodiment of the cassette tape recorder of the present invention, FIGS. 4 to 6 are front and bottom views of the device, and FIGS. 6 to 8 are main parts. FIG. 9 is a partial sectional view showing an example of the configuration, FIG. 9 is a view with the cassette lid opened, and FIGS. 10 to 11 are explanatory views of the main parts. In Figures 4 to 11, 1 is the main cabinet, 2 is the cassette lid, and 3
is a stop button, 4 is a tape cassette, 5 is a playback button, 6 is a playback lever, 7 is a head, 8 is a head rotation plate, 9 is a fulcrum shaft of the head rotation plate, 10 is an interlocking pin of the head rotation plate, Reference numeral 11 indicates an inclined portion of the playback lever, 12 indicates a playback interlocking lever, 13 indicates a fulcrum shaft of the playback interlocking lever, 14 indicates an interlocking bin for the playback interlocking lever, 16 indicates a tension spring that biases the playback interlocking lever, 16
is the lock lever 117 is the hook part of the lock lever, 18
19 is a pivot point for the cassette lid, and 20.21 is a lock lever holding rib integrally provided with the main cabinet.

Next, the operation of the above embodiment will be explained. The regeneration button 5 of the mechanism is integrally attached to the regeneration lever 6.
By pushing in, the regeneration lever 6 is pushed down, the inclined part 11 of the regeneration lever 6 is turned downward, and the regeneration interlocking lever 12 is pushed down.
Move around its fulcrum 1 (11113...) (
(See Figures 10 and 11. Play button pressed in.) The reproduction interlocking lever 12 has a groove shape at one end, and the interlocking bin 1 of the head rotation plate 8 is inserted into this groove.
0 is engaged, the head rotating plate sIi rotates around its fulcrum shaft 9, and the head 7, which is integrally fitted with screws IF, also rotates and comes into contact with the tape in the tape cassette 4. . Further, an interlocking pin 14 is integrally formed at the other end of the regeneration interlocking lever 12, and this interlocking pin 14 engages with the groove of the lock lever 16, so that the regeneration button 5 is pushed in. By this operation, the lock lever 16 can be operated as shown in FIG. The regeneration lever 6 is locked when pushed in, and is returned to its original position by pressing the stop button 3.

The regeneration interlocking lever 12 is biased by a tension spring 16, and can return to its original position in the stopped state (when the regeneration lever is up). Recess and presser ribs 20, 21
, it is slidably engaged with the cabinet 1. A cassette lid 2 for loading and unloading the tape cassette 4 is rotatably supported by the cabinet 1 by a hinge having a pivot point 19. On the inner surface of the cassette lid body 2,
The stopper engagement part 18 is integrally formed, and when the device is stopped (the playback button is up), the lock lever 16
There is a slight gap between the hook part 17 and the hook part 17, so that it can be rotated. By pressing the playback button 5, the interlocking system is activated as described above, and the lock lever 16 is moved to the 11th position.
Slide Qil+L, hook part 17 at the position shown by the solid line in the figure.
engages with the stopper engaging portion 18 of the cassette lid 2,
As described above, according to this embodiment, the lock lever 16 is slidably provided in the battery case recess of the cabinet, and the lock lever 16 is connected to the playback button 5 and the playback interlocking lever. 12 and engaged with the engaging portion 18 of the cassette lid 2, the cassette F Y1% during tape playback can be achieved with a very simple structure.
It can perform the locking function of the body 2. As a result, the cassette lid body 2 does not open during tape playback, so it is possible to eliminate the damage (tape rattling, damage to the head board, scratches on the tape, etc.) mentioned in the conventional example. Effects As described above, according to the present invention, the συ
Since the lock lever is configured to prevent the rotational movement of the cassette lid, opening of the cassette lid during tape playback can be prevented. Furthermore, by realizing the above functions with a minimum number of parts, it has an excellent effect that can greatly contribute to making devices smaller and thinner.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional cassette tape recorder, Figure 2 is a perspective view of a conventional cassette tape recorder.
The figure is a partial sectional view of the same tape recorder seen from the side.
The figure is a partial sectional view showing the state in which the cassette lid shown in FIG. 2 is opened, FIGS. 4 to 11 show an embodiment of the present invention, FIG. 4 is a front view, and FIG. Figure 6, Figure 7, Figure 8
The figure is a partial sectional view of the main part, Fig. 9 is a bottom view of the cassette lid in the open state, Fig. 10 is an explanatory diagram of the mechanism and operation of the main part, and Fig. 11 is a side view of the main part of Fig. 10. be. 2...Cassette lid body, 6...Play button, 6
... Regeneration lever, 12 ... Regeneration interlocking lever, 16 ... Lock lever - 3 Name of agent Toshi Nakao, lawyer and 1 other person 1st
Go to figure q) Ward figure 4 figure 6 figure 8 □ figure 10 figure 011

Claims (2)

[Claims] (1) A cassette mechanism having a lever interlocked with a playback button, a lock lever 1 slidably provided on the cabinet so as to be interlocked with the lever, and a cassette lid body whose opening and closing movement is regulated by the lock lever. A cassette tape recorder characterized by being equipped with. (2) The cassette lid body is equipped with a retaining part for a stopper that restricts the opening and closing operation by a lock lever that is linked to the playback operation, and during playback, the lock lever engages with the retainer part for the stopper and the cassette lid is closed. The cassette tape recorder according to claim 1, wherein the cassette tape recorder is constructed so that its body does not open.