JPH0658479U - Tape cassette - Google Patents

Abstract

(57) [Summary] [Purpose] A cassette that does not result in poor fitting of the upper and lower cases when the upper and lower cases are joined and integrated by a joining boss. Improve. [Structure] A wound tape is housed in a case composed of an upper case 1 and a lower case 2, and the upper and lower cases are provided with a joining boss 11 having a regulating rib 10 projecting in the case, and the joining boss 11 In the tape cassette integrally joined with the receiving boss 12 into which the boss is inserted, a plurality of ribs 13 for preventing the positional displacement of the joining boss 11 are provided on the inner peripheral surface of the receiving boss 12 so as to protrude from the upper and lower cases. There are no problems such as tapping and tapping, quality accuracy of case joining is improved, moldability is good, appearance quality and yield are improved, cycle is also easy, assembly work is accurate, and cost performance is also possible. It can be a highly reliable tape cassette.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tape cassette such as a video tape cassette or an audio cassette in which a recording medium, for example, a tape-shaped medium is housed in a case.

[0002]

[Prior art]

 In a conventional tape cassette of this type, as shown in FIG. 7, upper and lower cases a and b for accommodating a tape of a recording medium wound around a pair of reels or a hub to be housed are joined together to form a left and right position. The deviation preventing boss c is fitted and integrally connected to the receiving boss d.

[0003]

[Problems to be solved by the device]

 However, the receiving boss consisting of a hollow cylinder into which the ribs for preventing the displacement of the tapping boss are inserted becomes thick, and there are many sink marks due to cycle up etc. due to molding, and there is a tendency for defective products due to deformation or collapse. Therefore, the yield is poor, and it causes problems such as poor fitting or tapping (joint failure), which hinders the assembly work. Moreover, it is difficult to cycle up, cost performance cannot be achieved, and there is a problem in quality control. It was The present invention is intended to eliminate these conventional drawbacks, and it does not cause poor fitting of the upper and lower cases or tapping defects, improves the quality accuracy of case joining, has good moldability, and improves appearance quality and yield. In addition, the purpose is to provide a highly reliable tape cassette that can be easily cycled up, the assembly work can be done accurately, and the cost performance can be improved.

[0004]

[Means for Solving the Problems]

 According to the present invention, a tape that is wound is housed in a cassette case consisting of an upper case and a lower case, and the upper and lower cases are fitted with a joining boss with a regulating rib protruding in the case. In the tape cassette, which is integrally coupled with a receiving boss to be mounted, a plurality of ribs for preventing displacement of the joining boss are provided in a protruding manner on the inner peripheral surface of the receiving boss.

[0005]

[Action]

 In a tape cassette in which the upper and lower cases are integrally joined with a joining boss having a regulating rib protruding in the case and a receiving boss into which the joining boss is fitted, the upper and lower cases are joined to the inner boss of the joining boss. By installing multiple ribs for preventing boss misalignment, there is no mating failure or tapping failure in the upper and lower cases, the quality accuracy of the case connection is improved, the moldability is good, and the appearance quality and yield are improved. Also, it can be easily cycled up, the assembly work can be done accurately and cost performance can be achieved, and it can be used as a highly reliable tape cassette, and at the time of storage the open / close lid in the case is closed and locked, When the tape in the case is protected in a safe state and the case is loaded on the deck during use, the lock release operation part on the deck side opens the open / close lid, and the tape is exposed for use. It becomes so that.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to an example of a video tape cassette of FIGS. 1 to 6. A pair of tape reels 3 and 3 in which a magnetic tape 8 is wound inside a case body composed of an upper case 1 and a lower case 2 are freely rotatable. In order to prepare for the above, a tape cassette in which an opening / closing lid 5 covering the front opening 4 from which the magnetic tape 8 is pulled out is rotatably provided, and a joining boss 11 having a regulating rib 10 projecting in the upper case 1 In the tape cassette in which the upper and lower cases 1 and 2 are integrally coupled with the receiving boss 12 provided in the lower case 2 into which the joining boss 11 is inserted, the position of the joining boss 11 is displaced on the inner peripheral surface of the receiving boss 12. A plurality of prevention ribs 13 are provided so as to project to form a tape cassette.

The position-preventing ribs 13 are vertical ribs radially protruding from the cylindrical receiving boss 12 provided in the lower case 2 at intervals, for example, a plurality of four ribs. A cylinder 14 is preferably provided so that the fitting of the joining boss 11 and the engagement of the regulating rib 10 can be ensured. In this case, since the joining boss 11 and the receiving boss 12 are provided in the upper and lower cases correspondingly, either case may be selected and provided.

The case has the tape reel storage area 6 formed on the inner surface thereof, and if necessary, it is preferable that the case has a thin wall and the reinforcing rib 9 and the partition wall 19 are provided in a protruding manner.

In the figure, 7 is a drive shaft hole, and 15 is a window member provided in the upper case 1.

[0010]

[Effect of device]

 According to the present invention, in a tape cassette in which the upper and lower cases are integrally joined with a joining boss having a regulating rib protruding in the case and a receiving boss into which the joining boss is fitted, the inner circumference of the joining boss is attached to the receiving boss. By disposing multiple ribs for preventing displacement of the joining boss on the surface, there is no mating failure or tapping failure in the upper and lower cases, the quality accuracy of case joining is improved, the moldability is good and the appearance quality is also good. The yield can be improved, the cycle can be easily upgraded, the assembly work can be performed accurately, and the cost performance can be improved, resulting in a highly reliable tape cassette.

[Brief description of drawings]

FIG. 1 is a plan view of a lower case according to an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged plan view of a tapping boss of a lower case.

FIG. 4 is an enlarged vertical sectional view taken along the line BB in FIG.

FIG. 5 is a perspective view of the upper and lower cases in an assembled state.

FIG. 6 is a perspective view of an implementation product of the present invention in a separated state.

FIG. 7 is a perspective view of an assembled state of upper and lower cases of a conventional example.

[Explanation of symbols]

 1 Upper case 2 Lower case 3 Tape reel 4 Opening 5 Opening / closing lid 6 Tape storage area 7 Drive shaft hole 8 Tape 10 Rib for control 11 Joining boss 12 Receiving boss 13 Rib for preventing displacement 14 Hollow inner cylinder

Claims (2)

[Scope of utility model registration request] 1. A tape wrap 8 is housed in a cassette case consisting of an upper case 1 and a lower case 2, and the upper and lower cases are joined to each other by a joining boss 11 having a regulating rib 10 protruding from the case. A receiving boss 12 into which the joining boss 11 is fitted
In the tape cassette integrally combined with the tape cassette, a plurality of ribs 13 for preventing the positional displacement of the joining boss 11 are provided so as to project from the inner peripheral surface of the receiving boss 12. 2. The position deviation preventing ribs are vertical ribs radially protruding from the inner circumference of the cylindrical receiving boss at intervals, and each hollow rib has a hollow inner cylinder. Tape cassette.