JPS6144315Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a reel in which a flange is provided on the take-up hub of a reel-to-reel type cassette. When installed in parallel in the cassette half, the outer edges of the flanges overlap and touch each other, giving back tension to the reel to quickly and reliably stop the tape running, and to prevent tape winding from outside the flange. This makes it possible even beyond the diameter.

Most of the conventional cassettes have a shape in which an extremely thin sheet having slipperiness is interposed between the upper and lower end surfaces of the tape roll and the inner surfaces of the upper and lower cassette halves. However, when the tape roll rotates, it directly rubs against the sheet, producing frictional noise.Furthermore, due to uneven gripping with the sheet, the winding diameter changes, resulting in uneven packing tension. This was hindering the stable running of the tape.

In order to eliminate these drawbacks, reels with flanges at the top and bottom ends of the hub have been proposed for tape cassettes in order to wind the tape in an orderly manner and prevent it from unwinding from the tape roll. Ta. However, although the flange is generally made of a relatively lightweight metal such as a thin plate of aluminum, the inertia increases as it rotates, making it difficult to stop the rotation quickly. .

Since the cassette tape is thinner than the open-reel tape, it is easily damaged by coming into contact with the flanges during winding, which can be a fatal defect, especially when the tape is quickly wound and rewinded. Furthermore, when the flange rotates, it may collide with the inner surface of the cassette half and generate abnormal noise, which may cause discomfort to the user.

In order to eliminate such drawbacks, the applicant
We proposed a system that integrates the conventional seat and flange into a bowler hat-shaped seat cap, molds it from relatively soft synthetic resin, and press-fits it onto the outside diameter of the hub shaft to create a tape reel. I applied for utility model registration first. However, even in such a case, since the reel is provided with a flange, the inertia increases as the reel rotates, making it difficult to stop the rotation quickly.

The present invention was developed with a focus on this point.
The outer diameter of the flange is larger than the distance between the supply shaft and the take-up shaft of the cassette half, and when the tape reel having the flange is installed in the supply shaft hole and the take-up shaft hole of the cassette half, the outer edge of the flange The parts are brought into contact with each other and overlap, and the friction of the contacting and overlapping parts generates back tension during rotation, and the rotation of the flange is rapidly stopped.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a top view of a tape reel having a flange according to the present invention, where 1 is a flange on the supply side, 2 is a flange on the take-up side, and the arrows indicate the rotation directions, respectively. Reference numeral 3 denotes a portion where the outer edges of both flanges meet and overlap, and since these portions contact each other and rotate in opposite directions, friction occurs and serves as a brake for the rotation of the flanges. FIG. 2 explains the state in which the outer edges of both flanges meet and overlap. For example, the cap sheet 1' fitted into the supply hub shaft 4
1'a, cap sheets 2' and 2'a fitted onto the winding-side hub shaft 5 are overlapped so that the flanges of the two are brought into contact with each other. Therefore, both flanges are extended to meet each other, and the tape winding body 7 can be formed beyond the diameter of the flanges.

FIG. 3 shows the state in which the tape 8 is wound around the supply reel 4 to form a tape roll 7.

Now, when the tape 8 is run in the direction of the arrow and wound up from the supply side hub shaft 4 to the take-up side hub shaft 5, the overlapping part 3 of the supply side flange and the take-up side flange
Since the two flanges rotate in opposite directions, the adjacent portions of the flanges produce friction during rotation, which acts to prevent the flanges from rotating. This provides back tension to the running tape, which is effective when the tape reel or flange stops rotating, immediately stopping the rotation.

Incidentally, there is sometimes a request to use a tape longer than a predetermined length by winding it into a cassette. In such a case, if a conventional flanged hub is used, the supply side and take-up side flanges are provided in parallel in the cassette halves 9 and 10, and both flanges rotate apart from each other without touching each other, so the tape 8 ends up being wound beyond the outer diameter of the flange, and sometimes the tape on the outer periphery of the winding body 7 unwound from the winding body, causing damage to the tape or the inability to run the tape. In such a case, if the outer diameter of the flange is made larger than the conventional one and the outer edges of the flanges are brought into contact with each other and overlapped 3 as in the present invention, the flange diameter is extended and the tape winding space 6 is It will increase,
Since the tape winding body 7 is formed beyond the outer diameter of the flange, the tape does not unwind. At this time, the tape roll enters the tape winding space of the supply reel, so in order to eliminate the step difference caused by the overlap of the flanges and allow the tape to enter smoothly, steps 1'b, 1'b, 2'b is provided to eliminate the step difference caused by the superposition of the flanges.

It is also possible to leave a spiral groove on the upper surface of the flanges 1 and 2 for determining the direction of rotation and the amount of tape winding, and then apply aluminum vapor plating to give a metallic feel.

Since the tape reel of the present invention is configured as described above, it is possible to wind the tape in an orderly manner and stop the tape running quickly, and the tape running is stable even when winding a tape longer than the predetermined length. You can do it by doing this.

[Brief explanation of the drawing]

FIG. 1 is an explanatory top view of the tape reel according to the present invention attached to a cassette half;
FIG. 2 is a side view thereof, and FIG. 3 is a cross-sectional view of the main part when the tape is wound around the tape reel. 1, 2...Tape reel, 1', 1'a, 2',
2'a... Cap sheet, 1'b, 2'b... Step, 3... Overlapping part, 4, 5... Hub axle, 6... Tape winding space, 7... Tape winding body, 8 …
…tape.

Claims (1)

[Scope of utility model registration request] The outer diameter of the flange of the tape reel is made larger than the distance between the supply shaft and take-up shaft of the cassette, and when the tape reel is attached to both shafts, the outer edges of the flanges overlap and come into contact with each other. tape cassette.