JPS624947Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an endless tape cassette that uses an existing reel-to-reel type tape cassette case to allow smooth tape running.

In an endless tape cassette constructed using a reel-to-reel tape cassette case, especially when the tape cassette is small, the tape must be twisted 90 degrees within the narrow case.
The distance from the point where the tape is pulled out from the tape roll until it is first guided by the guide member while being twisted is short, which may cause excessive force to be applied to the tape or damage the edges. There is.

In view of these points, the present invention is designed to allow the tape to run smoothly within a given narrow cassette case without applying excessive force to the tape as much as possible. I will explain.

First, Figure 1 is an inside view of an existing reel-to-reel type tape cassette, where 1 is the lower case, 2, 3
is a reel hub, and 4 and 5 are tape winding bodies. The tape 6 between the tape rolls 4 and 5 is run by guide rollers 7 and 8 along front openings 9, 10, 11, 12, and 13 into which heads and pinch rollers are inserted. and is also guided by guide pins 14, 15, 16, 17, 18, and 19. 20 is a capstan insertion hole.

The present invention uses this tape cassette case to construct an endless tape cassette as shown in FIG. The endless tape 21 wound around the tape body 23 and pulled out from the inside of the tape winding body 24 is moved to the guide roller 2 supported by the support shaft 25.
6, is further guided by guide rollers 8, runs along the openings 13, 12, 11, is wound around the guide pin 16, and is wound around the outer periphery of the tape roll 24. ing.

The endless tape 21 runs between the capstan inserted into the capstan insertion hole 20 and the opening 1.
The tape winding hub 23 is moved in the direction of arrow A by a pinch roller inserted from the bottom case 1, and is supported by one reel shaft insertion hole (not shown) of the lower case 1 as a bearing. 21
It rotates as it is pulled out. Note that when this endless tape cassette is installed in a tape recorder, the take-up side reel shaft is connected to the hole 27 formed in the center of the tape winding hub 23.
The supply side reel shaft is loosely fitted into the other reel shaft insertion hole 28, and its reel shaft rotates independently of the tape winding hub 23.

On the way to being pulled out from the tape winding body 24 and being guided by the guide roller 26, the tape 21 is provided with an inclined rib 29 whose height gradually changes, which is integrally provided on the inner surface of the upper case 1'.
1, and as a result, the tape 21 is twisted approximately 90 degrees even if the length from the position where it is pulled out from the tape winding body 24 until it is guided by the guide roller 26 is short. It is smoothly guided by the guide rollers 26. Therefore, the tape 21 does not tilt from the position past the guide roller 26 to the position where it contacts the guide pin 19, the head, etc. past the guide roller 8, and the tape runs smoothly.

4 and 5 show another embodiment in which the guide roller 26 is omitted and the inclined rib 2
9, the endless tape 21 is twisted approximately 90 degrees and its running direction is changed, and then it is guided by the guide pin 19. Also, the 6th
7 shows an inclined rib of another embodiment, in which an inclined rib 31 is formed by cutting and raising a slippery sheet 30 interposed between a tape winding body 24 and an upper case 1'. This slanted rib 3
1, the tape 21 drawn out from the tape roll 24 may be twisted in the same manner as in the above embodiment.

This is a slippery sheet 30 interposed between the tape winding body 24 and the upper case 1', which is cut and bent to form an inclined rib 31.
As in the above example, the tape winding body 2 is
The tape 21 pulled out from 4 may be twisted.

The same applies to other configurations of the inclined ribs, and the same applies even if a plurality of inclined ribs are provided and gradually twisted as necessary.

As described above, the present invention constructs an endless tape cassette by winding tape around one tape winding hub, and the endless tape is pulled out from the tape winding body in a horizontal state and then guided by the guide member. This device is provided with an inclined rib that comes into contact with the pulled-out horizontal tape from the top side and twists the tape approximately 90 degrees.According to this invention, the tape pulled out from the tape roll is first guided. Even if the distance to the guide member is short, the tape is reliably guided by the guide member, so that the tape runs stably after passing through the guide member, and recording and reproducing operations are also performed stably. be.

Therefore, the present invention has the great effect that even if an endless tape cassette is constructed using an existing small-sized tape cassette case, the tape can run smoothly.

[Brief explanation of the drawing]

Fig. 1 is an inner view of an existing reel-to-reel type tape cassette, Fig. 2 is an inner view showing an embodiment of the present invention, Fig. 3 is a side view of the inclined rib portion, and Fig. 4 is an inner view of an existing reel-to-reel type tape cassette.
The drawings are an inner view of another embodiment, FIG. 5 is a sectional view of a main part thereof, FIG. 6 is a plan view showing an inclined rib of another embodiment, and FIG. 7 is a side view of the same. 1... lower case, 1'... upper case, 21...
Endless tape, 23...Tape winding hub, 2
4...Tape winding body, 26...Guide roller, 2
9... Inclined rib, 30... Slippery sheet, 31...
Slanted ribs.

Claims (1)

[Claims for Utility Model Registration] (1) An endless tape wound around one tape winding hub is stored in a cassette case, and the tape pulled out horizontally from the tape winding body is guided by a guide member. An endless tape cassette in which an inclined rib that previously twists the tape approximately 90 degrees is provided so as to come into contact with the top surface of the horizontal tape that has been pulled out. (2) The endless tape cassette according to claim 1, which is provided with an inclined rib integrally with the cassette case. (3) The endless tape cassette according to claim 1, wherein the tape is twisted approximately 90 degrees by inclined ribs and the running direction of the tape is changed. (4) The endless tape cassette according to claim 1, wherein the inclined ribs are formed by cutting and raising the slanted ribs from a slippery sheet interposed between the cassette case and the tape roll.