JPH0447827Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tape cassette containing a magnetic tape, and more specifically, to a tape cassette in which a support area is formed on the bottom side of the shell.

[Prior art] The so-called DAT cassette used as a digital recording audio tape is shown in Figures 4 and 5.
As shown in the figure.

This tape cassette has upper shell 1 and lower shell 2.
are stacked vertically to form a box-shaped shell, and a lid 7 that can be opened and closed is pivotally attached to the front surface of this shell. Furthermore, a slider 3 is attached to the bottom side of the lower shell 2 so as to be slidable back and forth, covering a part of the bottom surface. In Figure 5, 8,8 is
This hub hole is formed in the slider 3 to open the hub holes 5, 5 formed in the lower shell 2.

A support area 4 is formed at the rear end of the bottom side of the lower shell 2, and the slider 3 is moved backward from the position shown in FIG. 5 until it comes very close to the support area 4. Slide to. On both sides of this support area 4,
Several recesses 9, 9... are formed.

[Problems to be solved by the invention] When this tape cassette is shipped as a product, as shown in Figure 4, an index card b
It is also stored in a transparent resin case a. The general procedure at this time is as follows. First, with the flat plate-shaped base b side of case a as the lower side,
Open the box-shaped case lid c and insert the index card d into the base b side. Next, insert the tape cassette into the base b and close the case lid c. Generally, these operations are performed continuously using automated equipment.

However, in the above-mentioned conventional tape cassette, since the support area 4 is formed at the rear end of the lower shell 2 and is raised a step higher, when the tape cassette is inserted into the case a, the stepped portion of the support area 4 It often happens that the tape cassette hits the edge of the index card, and the tape cassette is not inserted all the way into case a and is stopped midway.

In this case, in an automated device, the case lid c is closed while the rear end of the tape cassette remains slightly outside of the case a, so the tip of the case lid c and the rear end of the tape cassette are , and the case lid c cannot be closed. Further, when the force of closing the case lid c of the automated device is strong, the case lid c will be forcibly closed, resulting in damage to the case a and the tape cassette.

The purpose of this invention is to solve the above-mentioned problems in conventional tape cassettes.

[Means for Solving the Problem] The structure of this invention will be described with reference to FIGS. 1 and 2. A support area 14 that is raised one step higher is formed on the rear side of the bottom surface of the shell 21. A raised portion 15 extending forward from the support area 14 is formed on the bottom surface of the shell 21. The raised portion 15 extends from the support area 14 toward the front side of the shell 21.
1 has a slope such that the height from the bottom surface gradually decreases.

[Function] In this tape cassette, a raised part 15 is formed in front of the support area 14 and is continuous with at least the support area 14, and this raised part 15 has the following features:
Since the height from the bottom of the shell 21 gradually decreases from the support area 14 to the front side of the shell 21, as shown in FIG.
When inserting the tape cassette into the case a, the edge of the index card d is guided by the sloped surface of the raised portion 15 and separated from the bottom surface of the lower shell 12.
Therefore, the edge of the support area 14 does not touch the corner edge of the index card d, allowing smooth insertion.

[Example] Next, an example of this invention will be described with reference to FIGS. 1 to 3.

First, to explain the embodiment shown in FIGS. 1 and 2, the shell 21 is formed by stacking the upper shell 11 and the lower shell 12 vertically, and therein is a magnetic field wound around a pair of hubs. A tape (not shown) is movably stored.

A support area 14 is formed at the rear end of the bottom side of the lower shell 12 and is raised one step higher than the bottom surface, and on both sides of the support area 14 there are provided controls for positioning the tape cassette, preventing accidental erasure, etc. in the loaded tape deck. Several recesses 19, 19... are provided for this purpose.

The sliders 13 are overlapped so as to be able to slide forward and backward so as to cover about 2/3 of the bottom of the lower shell 12, and a spring (not shown) attached to the inside of the lower shell 12 moves the slider 13. Always pushing forward.

Stoppers 20, 20 are provided between the lower shell 12 and the slider 13, which allow the slider 13 to move between the position shown in FIG. It is held in two places. In the former position, the hub holes 18, 18 formed in the slider 13
Since the hub holes 23, 23 opened in the lower shell 12 are shifted from each other, the hub holes 23, 23 are closed. On the other hand, in the latter position, the hub holes 18, 18 of the slider 13 and the hub holes 23, 23 of the lower shell 12 overlap, so that the hub holes 23, 23 of the lower shell 12 overlap.
3.23 will be held.

In front of the support area 14, a raised portion 15 is formed continuously. The raised portion 15 is formed in the center of the support area 14 and is elongated laterally.
A slope is formed such that the height of the lower shell 12 from the bottom surface gradually decreases as it goes forward from the base side where the lower shell 12 is continuous. Furthermore, the portion extending from the support area 14 to the raised portion 15 is formed with a continuous surface without any level difference.

A recess 1 corresponding to the shape of the raised portion 15 is provided on the rear side of the slider 13 in a portion facing the raised portion 15.
6 is formed. Slider 13 is lower shell 1
2, the protruding portion 15 fits into the recess 16 and does not prevent the slider 13 from sliding to the required position.

As shown by the arrow in FIG. 2, when this tape cassette is stored in the cassette case a into which the index card d has been previously inserted, the edge of the index card d touches the sloped raised portion 15. It is guided and does not hit the step part of the support area 14. Therefore, the tape cassette can be inserted into case a without any hindrance.

Next, the embodiment shown in FIG. 3 will be described. In this embodiment, isosceles triangular protuberances 15 are formed, and the tips of these protrusions, that is, the apex side of the triangle, are located behind the slider 13 located at the frontmost position. It has not reached the edge. However, this raised portion 15 is formed with a slope such that the height from the bottom surface of the lower shell 12 gradually decreases from the base to the tip side. This prevents the index card from hitting the edge of the support area 14 in the same manner as in the embodiment shown in FIG.

Note that the raised portion 15 is not provided in the central portion of the lower shell 12 near the support area 14, which serves as a reference for detecting the bottom surface of the lower shell 12.

[Effects of the invention] As explained above, in the tape cassette of this invention, when the tape cassette is inserted into a cassette case into which an index card has been inserted in advance, the edge of the support area 14 does not come into contact with the corner edge of the index card. Therefore, it is easy to insert the tape cassette into the case. Furthermore, operational errors in the automated tape cassette insertion device can be prevented, making it possible to perform operations efficiently and with fewer defects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from the bottom side of a tape cassette showing an embodiment of this invention, Fig. 2 is a side view showing the state when the tape cassette is inserted into a case, and Fig. 3 shows another embodiment. FIG. 4 is a perspective view of a conventional tape cassette and its case, and FIG. 5 is a perspective view of the conventional tape cassette from the bottom side. 13...Slider, 14...Support area,
15...Protuberance, 21...Ciel.

Claims (1)

[Scope of utility model registration request] In a tape cassette in which a raised support area 14 is formed at the rear of the bottom surface of the shell 21, the support area 14 is formed on the bottom surface of the shell 21.
A raised portion 15 is formed extending forward from the support area 14 to the shell 21.
1. A tape cassette characterized by having a slope such that the height of the shell 21 from the bottom surface gradually decreases toward the front side of the tape cassette.