JPS6327358Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette-type tape recorder that uses a simple structure to prevent the tape from protruding from the opening of the tape cassette body when the tape stops running.

Generally, a small tape cassette has five openings 2 to 6 formed in the front surface of a tape cassette body 1, as shown in FIG. It is designed to run along lines 2 to 6. In addition, 10, 11
is a hole for positioning and inserting a capstan, and 1
2 is an erroneous erasure prevention claw.

As shown in FIG. 2, the recording and reproducing operation of the tape cassette main body 1 is performed when the tape cassette 1 is loaded into a tape recorder, and the pinch roller 13 is inserted through the opening 2 into the recording and reproducing head 1 through the opening 3.
4, the erasing head 15 is inserted from the opening 5, and the pinch roller 13 is pressed against the capstan 17 inserted into the hole 10 via the tape 9, so that the tape 9 is applied to both sides of the openings 2 and 6. The tape runs from the hub 8 to the hub 7 along the openings 2 to 6 while being guided by tape guide rollers 18 and 19 provided, and is recorded and reproduced by the heads 14 and 15.

Here, since the tape cassette main body 1 is small and the openings 2 to 6 are set to relatively large dimensions, the tape guide rollers 18 and 19
is provided in a position very close to the openings 2 and 6, so when a fast forward operation is performed with the tape cassette main body 1 attached and the fast forward operation is stopped, the amount of tape winding on the hub 7 side is If the tape winding amount on the hub 8 side is small and the amount of tape winding on the hub 8 side is large, the inertia on the hub 8 side is larger than that on the hub 7 side, so the hub 8
If the end of the tape 9 is delayed in stopping, the tape 9 may protrude outside from the opening 6 as shown in FIG. , it had the disadvantage of being cut. The present invention solves the above conventional drawbacks by providing a tape cassette holder used for mounting a tape cassette with a tape extrusion prevention member that prevents the tape from extruding. This will be explained using figures.

In Figs. 3 and 4, the same components as the conventional components in Figs. A tape cassette holder 20 used for this purpose is provided with a tape extrusion prevention member 21 for preventing the tape 9 from extruding from the opening 6 of the tape cassette body 1.

That is, the protruding shafts 23a, 23b of the rotating arms 22a, 22b are attached to the tape recorder main body (not shown).
The tape cassette body 1 is inserted in the direction of the arrow as shown in FIG.
By rotating the cassette holder 20 with the cassette holder 20 inserted, the tape cassette main body 1 is attached to the cassette mounting section of the tape recorder. A tape extrusion prevention member 21 is provided facing the opening 6 of the main body 1.

As described above, by providing the tape extrusion prevention member 21 on the cassette holder 20, for example, when the tape fast-forwarding is stopped, a difference in the amount of tape wound around the hub causes a time difference in stopping the hub, and the tape 9 is As shown in FIG. 4, even if the tape 9 is slack, the tape extrusion prevention member 21
This prevents the tape 9 from coming into contact with and protruding to the outside, thereby preventing the tape 9 from being damaged or cut.

FIG. 5 shows another embodiment, in which a protrusion is inserted slightly into the opening 6 of the inserted tape cassette main body 1 on the inner surface of the tape extrusion prevention member 21 provided on the cassette holder 20. Part 2
1a, which further prevents the tape 9 from protruding.

The tape extrusion prevention member 21 may be formed integrally with the cassette holder 20, or may be detachable from the cassette holder 20.

As is clear from the above embodiments, the present invention is designed so that the tape cassette body can come into contact with the capstan on the upstream side in the tape running direction at the front side of the tape cassette body inserted into the cassette holder for mounting the tape cassette body on a tape recorder. A tape extrusion prevention member is provided so as to face an opening located in line symmetry with the opening into which the pinch roller is inserted, and according to this, for example, when tape fast forwarding operation is stopped, the tape at the two hubs is Even if there is a time lag before the rotation of the hub stops due to a difference in the amount of winding, etc., and the tape is about to protrude outward from the opening, the tape extrusion prevention member prevents this from happening, and the tape can therefore be used as a tape recorder. It must not be damaged or cut by being caught in mechanical parts, etc.

By providing the tape extrusion prevention member with a protrusion that slightly enters the opening of the tape cassette, the tape extrusion can be more reliably prevented.

Furthermore, by providing the tape extrusion prevention member on the cassette holder, it can be formed integrally with the cassette holder, so it can be implemented at an extremely low cost and has great practicality.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the tape cassette body, Figure 2 is a top view showing the main parts of a conventional tape recorder together with the inner surface of the tape cassette body, and Figure 3 is a cassette holder and tape cassette body according to an embodiment of the present invention. FIG. 4 is a top view showing a cross section of the main part of the tape cassette body inserted into the cassette holder, and FIG. 5 is a cross section showing the main part of another embodiment. FIG. 1...Tape cassette body, 2-6...Opening, 7, 8...Hub, 9...Tape, 18, 19
...Tape guide roller, 20...Cassette holder, 20a...Bottom part, 21...Tape extrusion prevention member, 21a...Protrusion part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) At the bottom of a cassette holder for attaching a tape cassette body to a tape recorder, on the upstream side in the tape running direction at the front of the tape cassette body inserted into the cassette holder. A cassette-type tape recorder comprising a tape extrusion prevention member that faces an opening that is line-symmetrical to the opening into which the pinch roller is inserted so as to be able to abut on the capstan. (2) The cassette-type tape recorder according to claim 1, wherein the tape extrusion prevention member is provided with a protrusion that slightly fits into the opening of the tape cassette body.