KR930004626Y1 - Compact type video tape cassette - Google Patents

Abstract

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Description

Compact Video Tape Cassettes

1 is an exploded perspective view of a cassette to which the present invention is applied.

Figure 2 is a side view of the cassette of the present invention.

3 is a bottom view of the cassette of the present invention.

4 is an exploded perspective view of a conventional cassette.

5 is a side view of a conventional cassette.

6 is a bottom view of FIG.

* Explanation of symbols for main parts of the drawings

1,1 ′: reel 2: uneven portion

3,10 Sidewall 4: Opening

5: recessed part 6: half-down

7: tape 8: cassette cover

9: half-up 11: dust and foreign material mixing prevention wall

The present invention relates to a compact video tape cassette, and in particular, an arc-shaped dust and foreign material mixing prevention wall is formed under the half-up sidewall of a portion where the uneven portion of the built-in tape up reel is projected to be improved to prevent tape damage. One compact video tape cassette is disclosed.

As is well known, conventional video or audio tape cassettes are shaped with half-up, half-down, cassette cover, etc. to facilitate handling of the built-in tape, improve the reliability of materials out of direct contact with the tape, In the conventional compact video tape cassette, as shown in FIG. 4, the opening 54 and the lower portion of the opening portion 54 in the middle of one side wall 53 are exposed to expose one side of the uneven portion 52 of the tape-up reel 51 as shown in FIG. The half-down 56 having the mouth 55 is formed in both reels 51 and 51 ', and the half-up 58 in which the cassette cover 57 is coupled to the front side thereof is coupled to the half-down 56 having the mouth 55. It was universal.

Accordingly, when viewed from the side or bottom of the conventional video tape cassette as described above, the opening 54 and the concave portion 55 communicate with the inside of the video tape cassette in a large area, as shown in FIGS. 5 and 6. The dust and this material are easily mixed and adsorbed onto the magnetic tape, thereby damaging the tape and shortening the service life.

Accordingly, the present invention provides a compact video tape cassette formed by forming an arc-shaped dust and a foreign matter mixing prevention wall in the lower half of the side wall to minimize the opening area of the opening in view of the above problems. It is.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

The tape 7 is wound in a half-down 6 having an opening 4 and a recess 5 below the middle of the side wall 3 so as to be exposed to one side of the uneven portion 2 of the take-up reel 1. In the conventional compact video tape cassette in which a take-up reel 1 and a supply reel 1 'are built-in, and a half-up 9 having a cassette cover 8 coupled to the front side thereof is assembled, In order to minimize the opening area of the opening 4, an arc-shaped dust and foreign matter mixing prevention wall 11 is formed inside the side wall 10 of the upper half-up 9 of the opening 4.

Referring to the effect of the present invention configured as described above are as follows.

That is, the injection molding of the half-up 9 may be molded by changing a part of the mold so that the dust and foreign matter mixing prevention wall 11 may be molded, and thus the half with the dust and foreign matter mixing prevention wall 11 formed therein. What is necessary is just to couple up 9 to half-down 6 conventionally.

Then, since the opening area of the opening 4 is made small as shown in Figs. 2 and 3, it is possible to prevent dust and foreign matters from entering into the video tape cassette.

As described above, the present invention is a useful design that can prevent dust and tape damage from the dust by forming the dust and the foreign matter mixing prevention wall in the simple shape.

Claims (1)

The tape 7 is wound in a half-down 6 having an opening 4 and a recess 5 below the middle of the side wall 3 so as to be exposed to one side of the uneven portion 2 of the take-up reel 1. In the conventional compact video tape cassette in which a take-up reel 1 and a supply reel 1 'are built-in, and a half-up 9 having a cassette cover 8 coupled to the front side thereof is assembled, Compact, characterized in that the arc-shaped dust and foreign matter mixing prevention wall 11 is formed inside the side wall 10 of the upper half-up 9 of the opening 4 to minimize the opening area of the opening 4. Type video cassette.