JPH0222829Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stop-eject mechanism for a cassette-type tape recorder in which a single stop lever is used to return each operating lever and to eject a cassette.

Various stop-eject mechanisms have been proposed for cassette-type tape recorders, in which a single stop lever is used to perform a stop operation in which the operating lever for recording, playback, etc. is returned to the backward position, and a cassette ejection operation. Therefore, two examples of such a mechanism will be explained.
In the following description and drawings, the operating lever is shown as one of recording, playback, fast forward, and rewind.

FIGS. 1A and 1B and FIG. 2 are examples of this, which are a plan view and a side view of the device in a stopped state in which the operation button is not operated, and a plan view in an operating state in which the operation button is operated.

Next, its operation and operation will be explained.

When the operating button 1 is pressed in the stopped state as shown in FIG. Press and lock plate 10
is moved to the left in FIG. 1a against the spring 17. Then, the pin 3 engages with a recess 13 connected to the inclined surface 12, and locks the operating lever 2. Further, as the lock plate 10 moves to the left, the pin 16 implanted in the lock plate 10 presses the inclined surface 20 of the engagement lever 19, and the engagement lever 19 is centered around the shaft 23 in FIG. The pin 7 installed in the stop lever 6 rotates clockwise against the spring 18 stretched between the stop lever 6 and the lock plate 10.
The pressed piece 21 of the engagement lever 19 is released from opposing position, and enters the operating state shown in FIG. 2.

When the stop button 5 is pressed in this operating state, the stop lever 6 moves against the spring 9, and the pin 8 embedded in the stop lever 6 presses against the slope 15 of the hole 14 formed in the lock plate 10. The lock plate 10 is further moved to the left in FIG. 2 against the spring 17. By this operation, the recess 1 of the pin 3
3 is disengaged, and the operating lever 2 is released from the spring 4.
It returns to its original position with the urging force of. Then, when the pressing force of the stop button 5 is removed, the stop lever 6 returns to its original position by the biasing force of the spring 9. As a result, the lock plate 10 and the engagement lever 19 are also returned to their original positions by the urging forces of the springs 17 and 18, respectively, and the first
Return to the stopped state shown in the figure.

When the stop button 5 is pressed again to eject the cassette in this stopped state, the stop lever 6 moves as described above. However, since the pin 7 and the pressed piece 21 are opposed to each other in the stopped state, the engagement lever 19 also moves against the spring 22 due to the pressing of the stop button 5, and the engagement lever 19 is moved against the shaft 24 shown in FIG. 1b. The right end of the pivotally supported transmission lever 25 is pressed to rotate the transmission lever 25 counterclockwise, and the ejection lever 26 is moved against the spring 27. Therefore, although not shown, when a cassette is attached to a cassette type tape recorder, the cassette is ejected by the ejection lever 26. When the pressing force of the stop button 5 is removed, the stop lever 6, the engagement lever 19, the transmission lever 25, and the ejection lever 26 return to their original positions by the urging forces of the springs 9, 22, and 27, respectively, and return to the stopped state. Become.

As can be seen from the above-described structure and operation, in this conventional example, the engagement lever 19, the transmission lever 25, and the ejection lever 26 are constructed separately in order to eject the cassette, and the spring 1 is used to return each of them.
8, 22, and 27 are required.

Figures 3a, b, and c and Figures 4a and b are other examples of the prior art, which are a plan view and both side views of a stopped state in which the operating button is not operated, and a plan view in an operating state in which the operating button is operated. and a side view.

These figures explain its operation and operation.

When the operation button 31 in the stopped state of FIG. 3 is pressed,
The operating lever 32 moves against the spring 35, and the pressing piece 33 provided on the operating lever 32 and the pressing piece 33 of the locking pawl 34 move against the pressed piece 4 of the transmission lever 44.
5 to move the transmission lever 44 against the spring 47. The locking claw 34 is connected to the shaft 39.
Press the locking piece 41 of the lock plate 40 that is pivotally supported on the
The lock plate 40 is moved against the spring 43 as shown in Fig. 3c.
It rotates clockwise at , engages with the locking piece 41, and is locked. Further, when the transmission lever 44 moves, the pressing piece 46 of the transmission lever 44 is moved to the operating lever 4 which is pivotally supported on a shaft 38 embedded in the stop lever 37.
8, the actuating lever 48 is rotated counterclockwise in FIG. The opposing state is released and the operating state shown in FIG. 4 is achieved.

When the stop button 36 is pressed in this operating state, the stop lever 37 moves against the spring 51 and rotates the pressed piece 42 of the lock plate 40 against the spring 43 (counterclockwise in FIG. 3b). ). By this operation, the engagement between the locking pawl 4 and the locking piece 41 is released, and the operating lever 32 and the transmission lever 44 are returned to their original positions by the biasing forces of the springs 35 and 47, respectively. Further, the operating lever 48 also rotates due to the biasing force of the spring 51, and the pressing piece 49 comes into contact with the side surface of the ejection lever 53. When the pressing force of the stop button 36 is removed, the stop lever 37 is moved by the spring 51.
It returns to its original position with the urging force of. As a result, the lock plate 40 returns to its original position due to the biasing force of the spring 43, and the pressing piece 49 slides on the side surface of the ejection lever 53, and is pushed by the biasing force of the spring 51 at a position past the pressed piece 54. It rotates to a position facing the pressing piece 54 and returns to the stopped state shown in FIG. 3.

When the stop button 36 is pressed again to eject the cassette in this stopped state, the stop lever 37 moves as described above and also presses the pressed piece 54. Rotate against. Therefore, although not shown, when a cassette is attached to a cassette type tape recorder, the ejection piece 55 of the ejection lever 53
The cassette is ejected. When the pressing force of the stop button 36 is removed, the stop lever 37 and the ejection lever 53 return to their original stopped states by the urging forces of the springs 51 and 56, respectively.

In this conventional example, the ejection lever 53 for ejecting the cassette and the transmission lever 4 for moving the ejection lever 53 are also used.
4. An operating lever 48 and springs 47, 51, and 56 for returning each lever are required. Further, other operating levers (not shown) can also be connected to the transmission lever 44 or the operating lever 4 by appropriate means such as a link mechanism.
8 needs to be moved in the same way as the operating lever 32, the operating mechanism becomes complicated and large.

As explained above, the conventional operating mechanism has drawbacks such as having a large number of parts, being complicated, and being large.

This idea was made in consideration of the above points, reducing the number of parts, simplifying the operating mechanism,
To provide a compact cassette type tape recorder. This invention will be explained below based on the drawings.

Figures 5a, b, and c are plan views showing an embodiment of this invention in a stopped state without operating the operation button, and both sides showing the relationship between the operation lever, stop lever, and lock plate, and the relationship between the stop lever and ejection lever. The plan view and FIGS. 6a and 6b are a plan view of the operating state in which the operating button is operated, and a side view showing the relationship among the operating lever, stop lever, and lock plate.

The operation and operation will be explained with reference to FIGS. 5 and 6.

When the operation button 61 in the stopped state in FIG. 5 is pressed,
The operating lever 62 moves against a spring 65, and the pressing piece 64 of the operating lever 62 includes a transmission lever 70 pivotally supported on a shaft 69, an ejection lever 72, and a coil spring 75 whose both ends are locked to the chassis and the ejection lever 72. The pin 71 of the transmission lever 70 is pressed against the biasing force of the coil spring 75, and the transmission lever 70 and the ejection lever 72 are moved to the right in FIG. 5a. Locking claw 63 of operating lever 62
The lock plate 76 supported on the shaft 69 is connected to the spring 7.
9 and rotate the locking piece 77 of the locking plate 76.
and locks the operation button 62. In addition, by moving the transmission lever 70 and the ejection lever 72,
The pressed piece 73 of the ejection lever 72 is the stop lever 67
The opposition between the two is released, and the operating state shown in FIG. 6 is achieved. The position of the ejection lever 72 at this time is defined as the moving position.
When the stop button 66 is pressed in this operating state, the stop lever 67 moves against the spring 68, presses the pressed piece 78 of the lock plate 76, and locks the lock plate 76.
Rotate. By this operation, the engagement between the locking piece 77 and the locking pawl 63 is released, and the operating lever 62 is returned to its original position by the biasing force of the spring 65. Also,
The ejection lever 72 and the transmission lever 70 are also returned from the moving position to the position where the pressed piece 73 abuts the stop lever 67 by the biasing force of the coil spring 75. Then, when the pressing force of the stop button 66 is removed, the stop lever 6
7 is returned to its original position by the biasing force of the spring 68, and the discharge lever 72 is also returned to its initial position where the pressed piece 73 faces the stop lever 67 by the biasing force of the coil spring 75, returning to the stopped state shown in FIG. return.

When the stop button 66 is pressed again to eject the cassette in this stopped state, the stop lever 67 moves and also presses the pressed piece 73 as described above, so the ejection lever 72 is moved against the coil spring 75. Rotate. Therefore, although not shown, when a cassette is attached to a cassette type tape recorder, the cassette is ejected by the ejecting piece 74 of the ejecting lever 72. When the pressing force of the stop button 66 is removed, the stop lever 67, the ejection lever 72, and the lock plate 76 return to their original stopped positions by the urging forces of the springs 68, 79 and the coil spring 75, respectively.

As described above, the transmission lever 70 and the ejection lever 7
2. Since the lock plate 76 is pivotally supported on the shaft 69, and the movement of the ejection lever 72 in the axial direction and rotational direction is controlled by the coil spring 75, the lever and spring parts are more convenient than in the conventional operating mechanism. The score will be reduced. Also, a transmission lever 70, a discharge lever 72, and a coil spring 7 are attached to the shaft 69.
5. Since the lock plate 76 is pivotally supported, the structure can be simplified and downsized.

In addition, in the above embodiment, the transmission lever 70 and the ejection lever 72 are constructed separately, but both the levers 70 and 72
If it is integrated, the number of parts can be further reduced.

As explained above, the stop/eject mechanism of the cassette tape recorder of this invention has an ejection lever, a coil spring, and a lock plate on the same axis, and when the operation button is operated, the ejection lever is released from facing the stop lever. When the operation button returns to the stopped state, a single coil spring serves as both the spring that urges the ejection lever to face the stop lever and the spring that urges the ejection lever in the backward movement direction. Fewer parts,
And it can be simplified. Also, there is an ejection lever on the same axis.
Since a coil spring and lock plate are installed, there are advantages such as the ability to downsize the operating mechanism.

[Brief explanation of the drawing]

Figures 1a, b and 2 are a plan view and a side view of the stop/eject mechanism of a cassette tape recorder in a stopped state without operating the operating button, and a plan view in an operating state with the operating button operated. Figures a, b, and c and Figures 4 a and b show another example of the conventional example; a plan view and both side views thereof in a stopped state in which the operating button is not operated; and a plan view in an operating state in which the operating button is operated. The side view and FIGS. 5A, 5B, and 5C are plan views showing one embodiment of this invention in a stopped state in which the operation button is not operated, and the relationship between the operation lever, stop lever, and lock plate, and the relationship between the stop lever and the ejection lever. FIGS. 6a and 6b are a plan view of the operating state in which the operating button is operated, and a side view showing the relationship between the operating lever, the stop lever, and the lock plate. In the figure, 62 is an operating lever, 65 is a spring,
67 is a stop lever, 68 is a spring, 69 is a shaft, 70 is a transmission lever, 72 is a discharge lever, 73
75 is a coil spring, 76 is a lock plate, and 79 is a spring.

Claims (1)

[Scope of utility model registration request] Recording biased in the backward direction by a spring,
An operating lever for playback, fast forwarding, rewinding, etc. and a stop lever, a rotary locking plate pivotally supported on a shaft for locking the operating lever in the forward movement position against the spring, and a rotating lock plate that slides on the shaft. A rotatably attached eject lever is fixed at one end to the chassis and the other end is locked to the eject lever to bias the eject lever in the axial direction of the shaft and to move the eject lever toward the shaft. The ejection lever is provided with a coil spring that biases the operating lever in the rotational direction of the shaft, and when the operating lever is pressed to the forward position, the ejection lever resists the biasing force of the coil spring and rotates in the axial direction of the shaft. At the same time, the operating lever is locked to the locking plate, and when the stop lever is pressed in this state, the locking of the operating lever by the locking plate is released, and the ejecting lever is moved to the coil. When the stop lever is returned to its initial position by the biasing force of the spring, and the stop lever is pressed again, a portion of the stop lever comes into contact with the pressed piece of the ejection lever, and the ejection lever is moved to the coil spring at the initial position. A cassette-type tape recorder characterized in that the cassette is ejected by rotating against the cassette.