JP2800130B2 - Tape cassette - Google Patents

Description

The present invention relates to a magnetic tape for audio or video,
The present invention relates to a tape cassette containing a tape such as a cleaner tape.

[Conventional technology]

Conventionally, magnetic tapes such as audio and video are wound around a pair of reel hubs and rotatably mounted and housed in a cassette case. The tape is hung by a guide pole or a guide roller in a housing cassette case. In order to improve the running performance of the guide, in the tape width direction, a position regulating rib protruding from the inner surface of the case or a guide roller is provided with a position regulating collar,
In general, the tape is run with the tape edge applied thereto.

[Problems to be solved by the invention]

In the case a of this conventional magnetic tape cassette, as shown in FIG. 4, the tape c moves in the width direction on the front surface of the cassette through which the tape c passes when the tape runs, even if the rib b for regulating the position in the tape width direction is provided. For this reason, there is a tendency for the output to fluctuate due to track deviation and the output is reduced. At present, the position control unit on the hardware side is used. In particular, the cassette deck and the walkman (headphone stereo) are located at the center of the front of the cassette. Since the position regulation near the insertion portion d is shifted to one side, that is, the position regulation portion has one sloped slope, there is a significant problem of track deviation and output fluctuation.

The present invention is intended to eliminate these conventional drawbacks accurately and smoothly and stably without any disturbance in tape running in a cassette, and to reduce output fluctuation and track deviation, and to reduce tape edge damage. It is intended to provide a tape cassette that can record and reproduce with little stability, can increase the commercial value, can be easily manufactured, greatly improves workability, and can automatically automate cassette assembly. It is.

[Means for solving the problem]

The present invention is a tape 2 into the formed casing 1 from the upper case 1 ₁ and the lower case 1 ₂ which is wound around the pair of reel hubs 3 and 3 are rotatably accommodated, provided with the tape 2 within the casing In the tape cassette which runs while being guided by the guide poles 4 and the guide rollers 5, the tape which regulates the tape 2 at two places on both sides of the head pressing pad 12 on the front surface of the cassette when the tape 2 runs. tape, characterized in that opposite projecting deployed into an upper casing 1 ₁ and the lower case 1 ₂ by increasing the dimension in the tape width direction with distance ribs 6 and 7 for the position regulation in the width direction from the cassette front face center It is a cassette.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3 using an example of an audio magnetic tape cassette. A magnetic tape 2 or a cleaning tape is housed in a case 1 composed of an upper case and a lower case. A tape cassette which is wound around 3, 3 and rotatably accommodated, and which runs while guiding the tape 2 by a guide pole 4 and a guide roller 5 provided in a case. opposed projecting deploy ribs 6 and 7 and the upper casing 1 ₁ and the lower case 1 ₂ for position regulation in the tape width direction to regulate with respect to the tape 2 two places on both sides of the head pressure pad 12 of the front portion It is a tape cassette.

In this case, as the ribs 6 and 7, the curved top portion, i.e. the tape contact portion is formed in a rib of the arcuate cross-section, upper and lower cases 1 ₁ on both sides of the head pressure pad 12 this, 1 ₂ of the inner surface The tape 2 can be regulated at least at a plurality of locations in a well-balanced manner, and the dimension in the tape width direction is partially substantially equal to the tape width, and the tape width increases as the distance from the center of the front surface of the cassette increases. Larger dimensions in the direction ensure smooth running of the tape.

The guide pole 4 can be replaced with a guide roller if necessary. In any case, the guide pole 5 is provided on a tape path, and the guide roll 5 is rotatably fitted on a support shaft. The case 8 has a case positioning hole 8 and a capstan insertion hole 9 formed in the case.
Numeral 10 is integrally formed on the case body by a two-color molding method.

 In the figure, reference numeral 11 denotes a screw hole for coupling of the upper and lower cases.

〔The invention's effect〕

The present invention provides a tape width direction position regulating rib that regulates the tape at two places on both sides of the head pressure contact pad on the front surface of the cassette, which passes when the tape runs, as the distance from the center of the front surface of the cassette increases as the distance from the center increases. The size of the tape is increased and it is possible to strictly control the position of the tape in the width direction at the front of the cassette. Eliminates faults accurately, regulates the position of the tape in the width direction, does not disturb the tape running in the cassette, and reduces tape damage, so that the tape can run at the correct position without relying on the hardware side As a result, output fluctuations and track shift can be reduced, stable recording and reproduction can be achieved, and it is more advantageous in manufacturing a mold for forming a regulating rib. It can be inexpensive processing accuracy,
And it is easy to manufacture, greatly improving workability, making it easy to automate cassette assembly, and significantly improving durability,
Furthermore, there is a practical effect that a reliable product can be made without damaging the tape, and quality control is easy.

[Brief description of the drawings]

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

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroki Suzuki 1-1-13 Nihonbashi, Chuo-ku, Tokyo TDK Corporation (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 23/087 511

Claims (2)

(57) [Claims] A tape (2) is wound around a pair of reel hubs (3) and (3) in a case (1) composed of an upper case (1 ₁ ) and a lower case (1 ₂ ) and is rotatable. The tape (2) passes through the tape (2) when the tape (2) travels in a tape cassette that runs while being guided by a guide pole (4) or a guide roller and a guide roller (5) provided in a case. Ribs (6) and (7) for position regulation in the tape width direction, which regulate the tape (2) at two places on both sides of the head pressure contact pad (12) on the front surface of the cassette, are taped away from the center of the front surface of the cassette. A tape cassette characterized in that the width of the tape cassette is increased so as to be opposed to the upper case (1 ₁ ) and the lower case (1 ₂ ). 2. The tape device according to claim 1, wherein said ribs have curved tops, and said ribs are disposed so as to be opposed to the inner surfaces of said upper and lower cases so that the dimension in the tape width direction is partially substantially equal to the tape width. Tape cassette.