JPH046684A - Tape cassette - Google Patents

Abstract

PURPOSE:To remove the turbulence of tape traveling, to reduce tape damage and to attain stable recording/reproducing by projectively arranging ribs for regulating the position of a tape in a tape width direction so that the size in the tape width direction is increased in accordance with their separation from the center of a cassette front part. CONSTITUTION:Curved top parts, i.e. contact parts, are formed on the ribs 6, 7 having circular arc-like cross sections and the ribs 6, 7 are arranged so as to be opposed and projected to the insides of upper and lower cases 11, 12 on both sides of a head pressing pad 12 so as to regulate the tape 2 at least at plural positions in a well-balanced state. Since the size in the tape width direction is partially made almost equal to the tape width and increased in accordance with separation from the center of the cassette front part, smooth tape traveling is guaranteed. Consequently, the tape traveling can be smoothly and stably executed without generating turbulence, the damage of a tape edge can be reduced and stable recording/reproducing can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cassette containing a tape such as an audio or video magnetic tape or a cleaner tape.

[Conventional technology]

Conventionally, magnetic tapes such as audio and video tapes are wound around a pair of glue hubs and rotatably mounted and stored inside a cassette case. In order to improve the running performance of the tape, there are position regulating ribs protruding from the inner surface of the case in the width direction of the tape.
Alternatively, it is common that the guide roller is provided with a position regulating collar, and the guide roller is moved by applying the tape edge to the collar.

[Problem to be solved by the invention]

As shown in Fig. 4, in case a of this conventional magnetic tape cassette, the tape C moves in the width direction even though the tape width direction position regulating rib b is provided at the front surface of the cassette through which the tape C passes when the tape runs. As a result, there is a tendency for output fluctuations such as track misalignment and decreased output, and the current situation is that the position control part is on the hardware side, especially on cassette decks and Walkman (headphone stereo), which are located in the center of the front of the cassette. Since the position regulation near the head insertion part d is of the type that is shifted to one side, that is, the position regulation part has an inclined slope on one side, there are serious problems such as track deviation and output fluctuation.

The present invention is an attempt to accurately eliminate these conventional drawbacks, and allows the tape to run smoothly and stably within the cassette without any disturbance, helping to reduce output fluctuations and track deviations, and minimizing damage to tape edges. The purpose is to provide a tape cassette that enables stable recording and playback, increases product value, is easy to manufacture, greatly improves work efficiency, and allows automation of cassette assembly without any problems. be.

[Means to solve the problem]

In the present invention, a tape 2 is wound around a pair of reel hubs 3.3 and rotatably housed in a case 1 consisting of an upper case 11 and a lower case 12, and a guide provided with the tee 12 inside the case. In a tape cassette that runs while being guided by a pole 4 and a guide roller 5, a head pressure contact pad 1 on the front surface of the cassette that the tape 2 passes through when running.
The ribs 6.7 for position regulation in the tape width direction, which regulate the tape 2 at two places on both sides of the cassette 2, are made larger in the tape width direction as they move away from the center of the front face of the cassette. ．． This tape cassette is characterized in that the tape cassette is arranged in a protruding manner opposite to the tape cassette.

〔Example〕

An embodiment of the present invention will be described using an example of a magnetic tape cassette for audio with reference to FIGS. 3. A tape cassette that is wound around a tape cassette and rotatably stored in the tape cassette, and that the tape 2 is guided by a guide pole 4 and a guide roller 5 provided in the case and runs, which the tape 2 passes through when it runs. A tape cassette in which ribs 6.7 for regulating the position of the tape in the width direction of the tape 2 are provided at two points on both sides of the head pressure contact pad 12 on the front surface and protrude from the upper case 11 and the lower case 12 to face each other. It is.

In this case, the rib 6.7 has a curved apex, that is, a tape contact portion, formed into a rib with an arcuate cross section, and this is formed on both sides of the helad pressure welding pad 12 on the upper and lower cases 1□18.
are arranged in opposing protrusions on the inner surface of the tape, so that the tape 2 can be regulated in a well-balanced manner at least at a plurality of locations, and the dimension in the tape width direction is partially made almost equal to the tape width,
It is guaranteed that the dimension in the width direction of the tape increases as it moves away from the center of the front surface of the cassette to ensure smooth tape running.

Note that the guide pole 4 can be replaced with a guide roller if necessary, and in any case, it is provided on the tape path, and the guide roll 5 is rotatably fitted to the support shaft, and the guide roller 5 is rotatably fitted to the support shaft. A cassette positioning hole 8 and a capstan insertion hole 9 are formed in the case, and a viewing window 1 is formed.
0 is integrally molded onto the case body using a two-color molding method.

In the figure, 11 is a screw hole for connecting the upper and lower cases.

〔Effect of the invention〕

In the present invention, ribs for regulating the position of the tape in the tape width direction, which regulate the tape at two places on both sides of the head pressure contact pad on the front surface of the cassette through which the tape passes when traveling, are arranged in the tape width direction as the tape moves away from the center of the front surface of the cassette. By increasing the size of the tape and protruding it, the position of the tape in the width direction can be strictly controlled at the front of the cassette.
Since the tape comes into contact with the tape at multiple places in the front and back on both sides of the pressing button, the disadvantages of the conventional method are accurately eliminated, and the position of the tape in the width direction is regulated, so there is no disturbance in the tape running inside the cassette. Since damage can be minimized, by running the tape in an accurate position without touching the hardware side, it is possible to improve the reduction of output fluctuations and trunk deviation, allowing stable recording and playback, and also prevents lip formation. It is also advantageous in terms of mold production, as it allows high-precision and low-cost processing, is easy to manufacture, greatly improves work efficiency, makes it easy to automate cassette assembly, and significantly increases durability. Furthermore, it has practical effects in that it can be made into a product with dormant properties without damaging the tape, and quality control is easy.

[Brief explanation of drawings]

FIG. 1 is an enlarged front view of a part of the embodiment of the present invention, and FIG.
3 is a plan view showing the inside of the case in use, and FIG. 4 is a front view of a portion of the conventional example. 1... Case, 2... Tape, 3... Reel hub, 4... Guide pole, 5... Guide roller, 6,
7... Rib, 12... Head pressure contact pad.

Claims (2)

[Claims] (1) A tape (2) is wound around a pair of reel hubs (3) (3) and rotatably stored in a case (1) consisting of an upper case (1_1) and a lower case (1_2),
A guide pole (4) with the tape (2) inside the case
Or, in a tape cassette that runs while being guided by a guide roller and a guide roller (5), the tape (2) is pressed against the tape (2) on both sides of the head pressure contact pad (12) on the front surface of the cassette that the tape (2) passes through when running. The ribs (6) and (7) for regulating the position of the tape in the width direction, which are regulated at two places, are made larger in the tape width direction as they move away from the center of the front of the cassette.
) A tape cassette characterized in that a tape cassette is provided with opposing protrusions. (2) the ribs (6) and (7) have curved tops;
2. The tape cassette according to claim 1, wherein said tape widthwise dimension is partially approximately equal to the tape width and is provided in opposing protrusions on the inner surfaces of the upper and lower cases.