JPS6232394Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape cassette, and its purpose is to make the pad constituting the cassette more easily conform to the curved surface of the front surface of the magnetic head, thereby ensuring more secure contact of the magnetic tape to the front surface of the magnetic head. This is to ensure that it is held securely without shifting its position.

A conventional tape cassette is constructed, for example, as shown in FIG. In other words, 1 is a cassette case, 2 is a magnetic tape wound around reel hubs 3 and 4 and housed in case 1, 5 to 8 are tape guide pins, and 9 is a pad spring held in a holding part 10 integrated with case 1. Solid rectangular parallelepiped rubber pads 11 and 12 are attached to both ends of the spring 9. When the above-mentioned cassette is attached to a tape recorder and the magnetic head is advanced, the magnetic head is inserted through the openings 13 and 14 at the front of the cassette and is inserted into the pad 1.
In this case, due to the hardness of the pad itself and the hardness of the spring 9, the length of contact between the tape 2 and the front surface of the head is extremely short, and if the head is misaligned or angularly displaced. There was a drawback that the contact of the pad with the head was uncertain, and the contact state between the tape 2 and the head became unstable.

The present invention eliminates such conventional drawbacks, and embodiments of the present invention will be described below with reference to FIG. 2 and subsequent drawings. In FIG. 2, 15 is a wall portion formed integrally with the case 1, 16,
17 is a support column provided in the front part of the front wall 15; 18 is a pad holder made of a soft elastic material such as rubber; and a pad 19 made of felt or the like is affixed to the front surface of the pad holder 18. , and the rear portion is formed into a wide portion 18a.

Pad holding stand 18 on which the pad 19 is provided
The wide part 18a is connected to the wall part 15 and the support columns 16,1
It is inserted and held between 7. In this case the third
As shown in the figure, the end surfaces of the support columns 16 and 17 are inclined surfaces so that the pad holder 18 can be easily inserted. In addition, in order to fully demonstrate the followability of the pad 19, a stepped portion 20 for regulating the height of the pad holding base 18 is formed on the inner surface of the case 1 between the support columns 16, 17 and the wall portion 15. .

FIG. 4 shows another embodiment, in which the pad holding base 18 is formed in a hollow shape, and the hollow part 21
is fitted into a support column 22 provided in the case 1, and the width of the support column in the left-right direction is equal to or slightly larger than that of the hollow part 21, and the support column 22
The width in the front-rear direction is smaller than that of the hollow part 21. As a result, the pad holding base 18 is controlled in the front-rear direction by the wall portion 15 and the support column 22, and in the left-right direction is controlled by the support column 22, thereby ensuring reliable positioning.

FIG. 5 shows still another embodiment, which differs from the one shown in FIG.
2 is also triangular.

FIG. 6 shows yet another embodiment in which a magnetic shield plate 23 is interposed between the wall portion 15 and the pad holder 18. It is pressed against the wall portion 15 and held by its elasticity. In the above embodiment, the pad may be omitted if the coefficient of friction between the pad holder 18 and the tape is sufficiently small.

As described above, according to the present invention, it is possible to assemble and hold a pad holder that fits well against the front surface of the head with an extremely simple structure, and by providing a hollow part in the pad holder, it is possible to assemble and hold the pad holder with a very simple configuration. This improves familiarity with the front of the head, which has a great effect.

[Brief explanation of the drawing]

Figure 1 is an inside view of a conventional tape cassette;
3 is a sectional view of the same side, and FIG. 4, FIG. 5, and FIG. 6 are top views of essential parts showing other embodiments of the present invention. 1...Cassette case, 15...Wall part, 16,
17, 22...Support pillar, 18...Pad holding stand,
19...pad, 21...hollow part, 23...magnetic shield plate.

Claims (1)

[Claims for Utility Model Registration] (1) A pad holder made of a soft elastic material that holds pads cannot be moved between a wall provided in the cassette case and a support column provided in front of the wall. A tape cassette configured to hold the tape. (2) Utility model registration claim 1 in which a pad holding part is provided with a hollow part, a support column is passed through the hollow part, and the pad holding stand is held between the support column and the wall part.
Tape cassette as described in section. (3) The tape cassette according to claim 1 or 2, which comprises a magnetic shield plate interposed between the wall portion and the pad holder.