JPS6317081Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE PRESENT EMBODIMENT The present invention relates to a tape cassette for use in a video tape recorder.

Generally, a tape cassette has a structure in which two reels wound with magnetic tape are housed in a space consisting of an upper half case and a lower half case, and has an appearance as shown in FIG. In FIG. 1, 1 is an upper half case, 2 is a lower half case, and 3 is a guard panel for protecting the magnetic tape exposed to the outside from the space formed by the upper half case 1 and the lower half case.

Conventionally, in a tape cassette having such a structure, when the upper half case 1 and the lower half case 2 are connected, a structure as shown in FIG. 2 has been used.

That is, as shown in FIG. 2, three locking holes 4 are provided in the side plate of the upper half case 1, and locking claws 5 are provided in the side plate of the lower half case 2 to lock into the three locking holes 4. is provided, and the locking claw 5 is locked in the locking hole 4 to temporarily fix the upper half case 1 and the lower half case 2, and the upper half case 1 and the lower half case are fastened together using screws (not shown). It was fixed by tightening 2.

However, in the case of this conventional tape cassette,
The upper half case 1 and the lower half case 2 are combined so that the locking claw 5 comes into elastic contact with the inner wall of the upper half case 1, and the locking claw 5 is fitted into the locking hole 4. 1 and lower half case 2
It is difficult to fit the upper half case 1 and the lower half case 2 back and forth, as shown in FIG. If it comes out of the upper half case 1,
As shown in FIG. 4, the upper half case 1 and the lower half case 2 may shift from side to side, and the locking claw 5 may no longer lock into the locking hole 4.

The present invention is intended to solve these conventional drawbacks, and aims to eliminate assembly errors when making a half case from an upper half case and a lower half case.

In order to achieve this purpose, in this invention,
A locking claw is provided on one of the upper half case and the lower half case, and a locking hole into which the locking claw locks is provided on the other, and either or both of the upper half case and the lower half case are provided. A long guide shaft protruding from the locking pawl is provided on the side plate.

Fig. 5 shows a cassette according to an embodiment of the present invention, in which numeral 10 indicates an upper half case;
Reference numeral 1 denotes a lower half case, and the side plate of the upper half case 10 is provided with three locking holes 12, and the lower half case 11 is provided with locking claws 13 that lock into the locking holes 12. By fitting the upper half case 10 and the lower half case 11 in their proper positions, the locking pawl 13 is opened as shown in FIG.
The tip of the locking hole 12 will lock into the locking hole 12.

Further, a guide shaft 14 that contacts the inner wall surface of the upper half case 10 is provided on the side plate of the lower half case 11 . The length of the guide shaft 14 that projects toward the outside of the case is longer than the locking claw 13 .

Furthermore, this guide shaft 14 is connected to the lower half case 1.
They are provided at three locations: two corners of the side plate on the rear side of No. 1, and an intermediate portion of the side plate on the front side facing the side plate.

That is, with such a configuration, when the upper half case 10 and the lower half case 11 are combined, the guide shaft 14 is inserted into the upper half case 1 before the locking pawl 13 comes into contact with the inner wall of the side plate of the upper half case 10.
0, the upper half case 10 and the lower half case 11 are positioned by the guide shaft 14, and are combined while being guided. , the upper half case 10 and the lower half case 11 will not be misaligned in the front-rear direction or the left-right direction, and the upper half case 1
0 and the lower half case 11 can be connected.

In the above embodiment, the upper half case 10 was provided with the locking holes 13 and the lower half case 11 was provided with the locking claws 12, but on the contrary, the upper half case 10 was provided with the locking claws 12. , lower half case 1
1 may be provided with a locking hole 13.

Further, although the guide shaft 14 was provided only in the lower half case 11 in the above embodiment, it may be provided in the upper half case 10 or in the upper half case 11.
0 and the lower half case 11 may be provided at different positions. Further, the guide shaft 14 does not have to be rod-shaped as shown in FIG. 7, but may be a curved piece as shown in FIG. 8.

Furthermore, in the above description, the upper half case 10 is
Although only the temporary fixing of the upper half case 11 and the lower half case 11 has been explained, after the temporary fixation, the upper half case 10 is tightened with screws as in the conventional method.
and the lower half case 11 are fixed.

As described above, according to the tape cassette of the present invention, a guide shaft is provided on the side plate of one or both of the upper half case and the lower half case, and the length of the guide shaft that projects outward is longer than the locking claw. This has the effect that the upper half case and the lower half case are not assembled in a state where they are deviated from their normal positions.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an example of a tape cassette, Fig. 2 is an exploded perspective view showing a conventional tape cassette, and Figs. 3 and 4 are perspective views for explaining the drawbacks of the conventional tape cassette, respectively. , 5th
The figure is an exploded perspective view of a tape cassette according to an embodiment of the present invention, FIG. 6 is a cross-sectional view showing the structure of the main parts of the cassette, and FIGS. 7 and 8 each show an example of the structure of the main parts of the cassette. FIG. 10... Upper half case, 11... Lower half case, 12... Locking claw, 13... Locking hole, 14...
...Guide shaft.

Claims (1)

[Scope of utility model registration request] A locking claw is provided on one of the upper half case and the lower half case, and a locking hole into which the locking claw locks is provided on the other, and either or both of the upper half case and the lower half case are provided. A tape cassette having a guide shaft on a side plate of the tape cassette, the length of which projects outwardly being longer than the locking claw.