JPS61203485U - - Google Patents

Description

[Brief explanation of the drawing]

1 and 2 show an embodiment in which the present invention is applied to a tape cassette for a video tape recorder.
The figure is an exploded perspective view of the main parts. Figures 3 to 5 show a conventional example of a tape cassette for a video tape recorder, in which Figure 3 is an exploded perspective view of the entire tape cassette, and Figure 4 is a schematic diagram showing the opening and closing operations of the front and rear lids. Fig. 5 is a longitudinal sectional view of the main part showing the front lid and the rear lid in the middle of being opened. In addition, in the symbols used in the drawings, 1...Cassette housing, 4...Tape, 6...Front opening, 1
1...Front cover, 12...Front cover plate, 13...Top cover plate,
14...First fulcrum pin, 17...Rear cover, 17a...
...Top edge, 18...Second fulcrum pin, 19...Protrusion piece, 19a...Base, 23...Guide groove, 25...
Guide pin, 30...dustproof rib, 30a...lower edge.

Claims (1)

[Scope of Claim for Utility Model Registration] A tape stored in a cassette housing is stretched along the front opening of the cassette housing, and a front cover integrally formed with a front cover plate and an upper cover plate having a substantially L-shaped cross section is attached to the front cover as described above. It is rotatably attached to the cassette casing by a pair of left and right first fulcrum pins provided behind a front cover plate that covers the front side of the tape, and a rear cover that covers the rear side of the tape is attached to both left and right edges of the tape. It is rotatably attached between a pair of left and right protrusions that are integrally molded at intervals on the lower surface of the upper cover plate of the front cover by a pair of left and right second fulcrum pins, and is attached to both left and right edges of the rear cover. A pair of left and right guide grooves for guiding the provided pair of left and right guide pins are provided in the cassette casing, and a pair of left and right guide grooves for guiding the provided pair of left and right guide pins are provided in the cassette housing, and a groove is provided above the front lid at an intermediate portion in the front and back direction between the pair of left and right first fulcrum pins and the pair of left and right protrusions. A dustproof rib integrally formed along the lower surface of the lid plate is provided, and when the lid is closed, the upper edge of the rear lid, which extends rearward and upward from the pair of left and right second fulcrum pins, is aligned forward with the lower edge of the dustproof rib. In the tape cassette which is brought into contact from the sides, the dust-proofing rib is disposed between the pair of left and right protrusions at a position above the pair of left and right second fulcrum pins, and the bases of the pair of left and right protrusions and the front The upper end edge of the rear lid is extended forward and upwardly from the pair of left and right second fulcrum pins when the lid is closed, and the lower end edge of the dustproof rib is attached from the front side. A tape cassette characterized in that the tape cassette is configured so as to be brought into contact with each other.