JPH0152832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a tape device having an embedding element that clamps and fits the end of the tape into a part of the tape winding shaft and fixes the tape, thereby preventing drop-out from occurring. It is a tape device.

Fig. 1 shows a conventionally known audio cassette tape, in which a presser 5 at the end of the tape 4 is inserted into a recess 3 in a hub 2 of a winding shaft having a rotating shaft hole 1, and the tape is wound with a fold at the beginning of winding. Since the bent portion 6 protrudes, when the next tape 7 is overlapped with a strong winding tension at this portion, it will be bent and permanently deformed, and the next layer of tape will be similarly deformed. This can cause errors in the case of computer tapes, screen distortion or noise or dropouts in the case of video tapes, and noise or S/S tapes in the case of audio tapes.
This caused problems such as deterioration of N and level fluctuations, and it was not possible to eliminate these problems.

The present invention is an invention that solves such conventional problems, and an example of its implementation will be described with reference to FIGS. embedder 10 that clamps and fixes the
is provided, and one end of the embedder 10 protrudes toward the rotary shaft hole 1 side and is inside a notch 11 provided in the recess 9.
Both the diametrical direction and the circumferential direction of the winding shaft are directly engaged and locked in such a manner that there is no step difference between the surfaces of the winding shaft 8, and thereby one end of the implant 10 is supported on the winding shaft 8. The other end of the embedder 10 is fitted and locked inside the notch 11 via the tape 4, and the level difference between the surface of the winding shaft 8 and the surface of the embedder is approximately equal to the thickness of the tape 4. The surface 12 of the winding shaft 8 is formed such that the level difference gradually decreases as it moves away from the winding shaft 8 and becomes the outer surface of the winding shaft in front of the notch 11 at a distance that goes around the winding shaft 8, and the tape 4 is If it is sandwiched between 10 and the winding shaft 8 and wound from the part 13, a uniform winding surface is formed.

Since the present invention is as described above, when a magnetic tape is wound around it, one end of the implant is in direct contact with the winding shaft, so the contact distance between the implant and the winding shaft is regulated. Even when the tape is pinched, the entire embedder does not float or shift, making it possible to hold the tape very stably and reliably.

Further, since the difference in level caused by the tape thickness does not appear on the surface on which the tape is wound, problems such as errors, screen distortion, noise, dropouts, S/N deterioration, and level fluctuations as described above do not occur.

As described above, the present invention is applicable to computers, video,
This is an invention that solves a very big fundamental problem in audio.

The present invention includes not only the hub portion described above, but also cassettes, cassette tapes, cassette systems, tape reels, tapes wound around the hub or reel of the present invention, and tape systems using this hub. Although various other modifications are possible, all of these are included in the present invention.

[Brief explanation of drawings]

FIG. 1 is a side view of a known example, FIG. 2 is a side view of an embodiment of the present invention, and FIG. 3 is a side view of an embodiment of the present invention obtained by wrapping the tape in the structure shown in FIG. 4... Tape, 8... Tape winding shaft, 9... Recess, 10... Implant, 11... Notch.

Claims (1)

[Claims] 1. In an embedder that fits into a recess in a tape winding shaft surface to clamp and fix a tape end, one end of the embedder in the tape end direction extends in the diametrical and circumferential direction of the tape winding shaft. The one end portion of the embedder is supported by directly contacting and engaging with the notch provided in the recess in both the diametrical direction and the circumferential direction of the winding shaft so that there is no step difference between the winding shaft surface and the winding shaft surface. , the other end of the embedder protrudes in the diametrical and circumferential direction of the tape winding shaft and fits into the recess of the winding shaft while holding the tape end; The concave portion is formed such that the level difference between the winding shaft surface facing the embedder and the surface of the other end of the embedder is approximately equal to the tape thickness, and as the distance from the embedder increases in the tape winding direction, A tape in which the winding shaft surface is formed so that the step difference gradually decreases, and when the tape is wound around the winding shaft surface with the tape end held by the embedder, a uniform tape winding surface is obtained. Device.