JPH06309832A - Tape cassette - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to allow each tape cassette to be inserted in the longitudinal direction in a VTR in which different size tape cassettes can be mounted in the same format and to change the width dimension of the VTR. [Structure] When tape cassettes of different sizes are mounted on the same VTR, large and small tape cassettes can be mounted in the longitudinal direction by providing cassette guide grooves with different width dimensions in the longitudinal direction of the large and small tape cassettes. The storage space can be secured by making the size smaller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette most suitable for use in a magnetic recording / reproducing device such as a video tape recorder and various other information processing devices.

[0002]

2. Description of the Related Art Recently, video tape recorders (hereinafter referred to as VTRs) have been available on the market in which tape cassettes of the same format but different sizes can be mounted. Therefore, the mechanism of the VTR becomes complicated, and many troubles occur when various tape cassettes of different sizes are mounted on the VTR.

A conventional tape cassette will be described below. FIG. 4 shows the bottom surface of a conventional large and small tape cassette. In FIG. 4, 1 is a large tape cassette, 1
a is a small tape cassette. 2 is a cassette guide groove for a large tape cassette, and 2a is a cassette guide groove for a small tape cassette.

As is well known in the basic construction of large and small tape cassettes, an upper half and a lower half are combined to form a cassette body, and a reel around which a tape is wound is housed in the cassette body. Further, the front opening is provided with a lid for protecting the stretched tape.

The operation of the tape cassette constructed as above will be described below.

First, when the large tape cassette 1 is inserted into the cassette holder of the VTR in the direction A as shown in FIG.
Is provided in the longitudinal direction for guiding the cassette to a predetermined position.

Since the small tape cassette 1a has the same structure as the large tape cassette, its description is omitted here.

The above large and small tape cassettes 1 and 1a are VT
When mounting on the R, the tape cassette is inserted into the cassette holder provided with the cassette guide convex portion. At the time of this insertion, the cassette guide protrusions are
It is inserted in the cassette guide groove 1a and is arranged at a predetermined position.

Further, by providing the cassette guide groove and the cassette guide convex portion, erroneous insertion of the front and back sides of the large and small tape cassettes 1 and 1a is prevented.

[0010]

However, in the above construction, when tape cassettes of different sizes are mounted in the same cassette holder in the longitudinal direction, there is no position restriction of the depth in the small tape cassette, and the cassette opening is not formed. There is a problem that it cannot be set in the same cassette holder because it cannot be set in the center of the mouse of the device.

The present invention solves the above-mentioned conventional problems and provides a tape cassette that can be mounted in the same cassette holder by facilitating the position regulation of tape cassettes of different sizes in the longitudinal direction. Aimed at.

[0012]

In order to achieve this object, the tape cassette of the present invention is a tape guide groove for guiding to the cassette holder in different tape cassettes which can be mounted in the same cassette holder. Is provided in the longitudinal direction of the bottom surface of the tape cassette, and the position of each tape cassette is regulated by the width of the cassette guide groove.

[0013]

With this structure, since tape cassettes of different sizes can be mounted in the same cassette holder in the longitudinal direction, the width direction of the VTR is reduced and a storage space can be secured.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a bottom view of a large and small tape cassette according to an embodiment of the present invention. FIG. 2 is a perspective view of a cassette holder, and FIG. 3 is a plan view in which a tape cassette using two kinds of tapes having different outer dimensions is overwritten.

In FIG. 1, (a) is a small tape cassette, and (b) is a bottom surface of a large tape cassette. (C) is a plan view in which large and small tape cassettes are overwritten. Three
3a is a cassette guide groove for a large tape cassette, and 3b is a cassette guide groove for a small tape cassette.

In FIG. 2, 4 is a cassette holder for large and small tape cassettes. Reference numerals 5 and 5a are cassette guide convex portions of the large tape cassette, and 5b are cassette guide convex portions of the small tape cassette.

The cassette body of the large and small tape cassette is composed of an upper half and a lower half formed of synthetic resin, and the upper half and the lower half are joined to each other in the vertical direction to form a casing. Inside the cassette body, a pair of reels around which a tape is wound are housed.

The front surface of the cassette body is provided with an opening for receiving a member provided on the apparatus side. A tape is stretched over the opening, and is normally covered with a front lid and a rear lid.

Next, the structure of the bottom surface of the large tape cassette 1 will be described. In the longitudinal direction of the large tape cassette, V
The cassette guide groove 3a in which the cassette guide convex portion 5a of the large tape cassette provided in the cassette holder 4 of the TR device enters, and the small tape cassette has the cassette guide groove 3b of the small tape cassette at the same distance from each cassette opening. It is provided. The cassette guide convex portion 5 of the large tape cassette is formed in such a size that the depth position is regulated when the small tape cassette is coupled and the cassette opening of the small tape cassette can be set at the center of the mouse of the apparatus.

As described above, the sizes of the cassette guide grooves 3 and 3b in the longitudinal direction are different between the large and small tape cassettes, and the depth position can be regulated by changing the size. By expanding the width of the cassette guide groove 3 of the tape cassette and forming the same size 3a and the cassette guide groove 3b of the small tape cassette, the position of the small tape cassette can be easily regulated.

Further, since the cassette guide convex portion is formed in the longitudinal direction of the cassette holder, erroneous insertion other than the proper insertion method such as the direction and front and back of the tape cassette can be prevented, and damage to the VTR can be prevented.

[0023]

As described above, according to the tape cassette of the present invention, in the tape cassettes having different outer dimensions,
When the tape cassettes are inserted into the same cassette holder that can be mounted in the longitudinal direction, each tape cassette can be easily positioned and erroneous insertion of the tape cassette can be prevented.

[Brief description of drawings]

1A is a bottom view of a small tape cassette according to a first embodiment of the present invention, FIG. 1B is a bottom view of a large tape cassette according to a first embodiment of the present invention, and FIG. Top view of

FIG. 2 is a perspective view of the cassette holder according to the embodiment.

FIG. 3 is a plan view in which the large and small tape cassettes of the same embodiment are overwritten.

4A is a bottom view of a conventional small tape cassette, FIG. 4B is a bottom view of a conventional large tape cassette, and FIG. 4C is a plan view in which the large and small tape cassettes are overwritten.

[Explanation of symbols]

 1 large tape cassette 1a small tape cassette 2 conventional large tape cassette guide groove 2a conventional small tape cassette guide groove 3 large tape cassette guide groove 1 3a large tape cassette guide groove 2 3b small tape cassette guide groove 1 4 cassette holder 5 large Tape cassette guide protrusion 1 5a Large tape cassette guide protrusion 2 5b Small tape cassette guide protrusion 1

Claims (1)

[Claims] 1. An opening is formed in the front surface of the cassette body,
Further, in a large and small tape cassette having different sizes in which a cassette guide groove for guiding the cassette main body into the apparatus is formed on one side surface of the cassette main body, the pair of tape cassettes are aligned with a longitudinal centerline and a front surface position. And the width of the cassette guide groove of the large tape cassette located on the end face in the longitudinal direction of the small tape cassette is enlarged. Characteristic tape cassette.