JPH044667B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette mounting device for a video tape recorder, and is intended to ensure that the lid of the cassette can be opened when the cassette is inserted into the video tape recorder. It is.

Hereinafter, one embodiment of the present invention will be described while comparing it with a conventional device.

The one shown in Fig. 4 shows a part of a general cassette that stores a video tape, and a lid 3 is provided on the cassette body 1 to cover the exposed part of the video tape 2 and can be opened and closed. It is being This lid body 3 is pivotally supported below the part marked with an arrow in FIG. 4 (perpendicular to the plane of the paper). A recess 4 is formed in the inner surface of the side wall of the lid 3, and a through hole 5 is formed in the side wall of the cassette body 1 opposite to the recess 4. A through hole 6 is provided adjacent to this through hole 5. A pair of projecting pieces 8 and 9 of the control lever 7 are inserted into both the through holes 5 and 6. This control lever 7 is biased to the right (in the direction in which the protrusions 8 and 9 protrude from the through holes 5 and 6) by a spring (not shown). Normally, the tip of the protruding piece 9 fits into the recess 4 of the lid 3, so the lid 3 will not open.

When this cassette is stored in the cassette storage section of a video tape recorder, as shown in Figure 3,
Projection piece 1 of leaf spring 10 provided in cassette storage section
1 pushes in the protruding piece 8 of the control lever 7, so that the tip of the protruding piece 9 of the control lever 7 comes out of the recess 4 of the lid 3, so that the lid 3 can be rotated and opened.

However, since the force of the leaf spring 10 is not very large, even if the tip of the protrusion 8 of the control lever 7 is pushed in, vibrations etc. will be applied and the protrusion 8 will
The positional relationship between the protruding piece 11 may shift, and the control lever 7 may return to its original position. Therefore, immediately after the protruding piece 11 starts pushing the protruding piece 8, the tip 12a of the lever 12 provided in the cassette storage section is made to press the leaf spring 10, so that the protruding piece 11 keeps pushing the protruding piece 8. I have to.

This lever 12 will be explained. 1 and 2 are side views of the cassette storage section, and the cassette is inserted from the direction of the arrow in FIG. One end of the lever 12 is rotatably supported by a pin 14 on the side wall 13 of the storage section, and the other end is rotatably supported by a pin 16 on a fixed portion 15 of the video tape recorder. . One end of another lever 17 is rotatably supported by a pin 18 on the side wall 13 of the storage section, and the end of this lever 17 is rotatably supported by a pin 19 on the fixed part 15. . Levers 12 and 17 are set parallel to each other. lever 17 and lever 1
2 and is coupled by a spring 20.

When the cassette is stored in the storage section and the storage section is pushed down from above, the storage section will shrink as shown in Figure 2. In this state, the cassette is set at a predetermined position in the video tape recorder. Of course, a lever (not shown) engages and locks the housing so that the housing does not return upwards under the force of the spring 20. At this time, the tip 12a of the lever 12 comes into contact with the leaf spring 10, and the leaf spring 10 does not move due to vibration or the like and the protrusion 11 does not come off from the protrusion 8.

The lever 12 also has a contact piece 21 facing downward.
is fixed by a screw 22, and the curved tip of this contact piece 21 is adapted to come into pressure contact with the lever 17 as shown in FIG. 5 when the contact piece 21 is in the state shown in FIG.

With this structure, when the storage section is returned to its original position, the lever 12 and the lever 17 are separated while the contact piece 21 is in contact with the lever 17 without the storage section being suddenly moved upward by the force of the spring 20. The storage section is configured to rise slowly due to the action of a gear damper, but a large force is applied to the storage section by the spring 20 at the first moment it tries to rise, so if the contact piece 21 is not present, a strong shock will cause the video tape to drop. This is not desirable because it adds to the recorder. The contact piece 21 serves to soften this shock.

Note that the contact piece 21 may be fixed to the lever 17 side and pressed against the lever 12.

As described above, according to the present invention, the leaf spring for opening the lid of the cassette is pressed by the lever that controls the movement of the storage section in which the cassette is stored. The leaf spring always allows the cassette control lever to be pressed accurately. Further, the cassette storage section returns to the cassette storage position due to the damper effect due to the elastic force of the spring 20, and at this time, the spring 2
It is possible to soften the shock of the initial strong elastic force caused by 0 due to the function of the contact piece.
A natural return operation of the cassette storage section can be realized.

[Brief explanation of drawings]

1 and 2 are side views of a cassette loading device according to an embodiment of the present invention, FIG. 3 is a cross-sectional plan view of a portion of the device, and FIG. 4 is a sectional view of a portion of the cassettes stored in the device. A sectional plan view and FIG. 5 are other partially cutaway side views of the same device. 12...Lever, 12a...Tip, 10...
Leaf spring, 1...Cassette body, 7...Control lever, 9, 8, 11...Protrusion piece, 3...Lid body, 4...
recess.

Claims (1)

[Scope of Claims] 1. A cassette storage section 13 for storing video tape cassettes; one end rotatably supported on the side wall of the cassette storage section 13, and the other end rotatably attached to the video tape recorder fixing section 15. a first lever 12 pivotally supported on
and a protrusion 1 provided on the cassette storage section 13 that comes into contact with the tip of one end of the first lever 12.
1, one end is rotatably supported on the side wall of the cassette storage section 13 so as to be parallel to the first lever 12, and the other end is rotatably supported on the video tape recorder fixing section 15. Second lever 1 movably mounted
and a control lever 7 for the video tape cassette that controls the lid 3 of the video tape cassette to be rotatable at the predetermined position when the cassette storage section 13 is set from the cassette storage position to the predetermined position.
a spring 20 having an elastic force for returning the cassette storage section 13 from the predetermined position to the storage position; a contact piece 21 that presses against the other lever;
The first lever 12 comes into contact with the leaf spring 10 which is pressed by the cassette storage section 13 to make it rotatable, and the first lever 12 securely releases the restriction. and the above first or second
A cassette mounting device characterized in that the slow impact force acting on the cassette storage portion 13 is alleviated by pressure contact with the lever.