JPH0550588U - Cassette lid device - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to increase the strength and adhesion of parts of a rubber packing that is waterproof and dustproof, and prevent the rubber packing from being damaged or curled up. [Structure] A structure is provided in which a thick portion 1a is provided on the entire circumference of a rubber packing 1 fixed to a cassette lid 2. [Effect] By providing a thick part around the entire circumference of the rubber packing, it is possible to increase the strength and adhesion of parts, so it is possible to reliably prevent damage and swelling of the rubber packing, and product reliability. Can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cassette lid device that can be widely used for a structure portion requiring waterproof and dustproof such as a top loading cassette lid of a video tape recorder (hereinafter referred to as VTR).

[0002]

[Prior Art]

 Generally, this type of cassette lid device was as shown in FIG. That is, when the cassette lid 4 is locked by the rubber packing 5 fixed to the peripheral portion of the cassette lid 4, the outer peripheral portion of the rubber packing 5 is brought into close contact with the VTR housing 6 so that it is waterproof and It is designed to prevent dust.

[0003]

[Problems to be solved by the device]

 However, in the above structure, since the rubber packing 5, which is a waterproof and dustproof member, has a small wall thickness, as the frequency of use increases, the rubber packing 5 may be damaged due to damage or the adhesiveness may decrease, and the waterproofness may be increased. Also, there is a problem that the reliability of dust prevention is lowered.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a cassette lid device which can improve reliability of waterproofing and dustproofing and can be reliably implemented.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is provided with a structure in which a thick portion is provided on the entire circumference of a rubber packing attached around the cassette lid.

[0006]

[Action]

 In the above structure, the thick wall portion is not damaged or turned over, and the dustproof reliability is improved.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a rubber packing, which is fixed around the cassette lid 2. Then, when the cassette lid 2 is closed, the outer peripheral portion of the rubber packing 1 is brought into close contact with the VTR housing 3. The feature of this embodiment is that a thick portion 1a formed by a projection is provided on the entire circumference of the rubber packing 1 fixed to the cassette lid 2.

According to the structure of this embodiment, the rubber packing 1 can enhance the component strength and the degree of adhesion of the rubber packing 1 due to the protrusion 1a and the thick portion 1b, and the rubber packing 1 is not damaged or curled up. It can be prevented.

FIG. 3 shows a second embodiment of the present invention in which the projections project outward rather than upward to form the thick portion 1a. This one also exhibits the same effect as that of the first embodiment.

[0011]

[Effect of the device]

 As is clear from the above description of the embodiments, the present invention can increase the strength and adhesion of parts by providing a thick portion on the entire circumference of the rubber packing, and therefore the rubber packing can be prevented from being damaged or turning over. Therefore, it is possible to provide a cassette lid device that can prevent water leakage, can be reliably waterproofed and dustproof, and can improve the reliability of the product.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a cassette lid device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the cassette lid device.

FIG. 3 is a sectional view of a cassette lid device according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a conventional cassette lid device.

[Explanation of symbols]

 1 rubber packing 1a thick part 2 cassette lid 3 VTR housing

Claims (1)

[Scope of utility model registration request] Claims: 1. A cassette lid device having a rubber packing for waterproofing and dust proofing around a cassette lid of a device, and a thick wall portion provided all around the rubber packing.