JPS5932947Y2 - Internal sealed structure of portable wristwatch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a waterproof structure on the glass-mounted type side.

Conventionally, the method of fixing the glass by adhesion, which is commonly used for Nira-open key types, lacks airtightness, and it has been confirmed that this often leads to watch body defects due to dirt, sweat, water, etc. entering the watch.

Therefore, in the past, glass adhesive type structures could not be used for waterproof watches, although they were structurally simple.

In order to eliminate the above-mentioned drawbacks, the present invention aims to improve airtightness even though it is a glass adhesive type, so that it can be used as a waterproof watch.

This will be explained in detail below with reference to the drawings.

1 is a sectional view of a conventional method, in which a glass 2 is fixed to a barrel 1 by an adhesive 4.

Further, the pipe 3 is fixed to the body 1 by adhesive or the like after being pushed into the body 1.

FIG. 2 shows a cross-sectional view of an embodiment of the present invention, in which a colorless and transparent acrylic or nylon liquid paint 5 is applied over the entire inner surface of the body 1 by a method such as spray painting or electrostatic painting. This is what I did.

The coating thickness is usually between 0.05mm and 0.2mm,
Since the gap between the glass adhesive part 4 button and the pipe insertion part 1a is sealed, airtightness is improved.

FIG. 3 shows an application example of the present invention, and is a cross-sectional view of an example in which the inner surface of the glass is coated at the same time by using colored paint.

In this case, in order to leave a transparent part for the clock display on the inner surface of the glass, painting is usually performed after masking.

It is also possible to create various patterns on the inner surface of the glass using a masking jig.

As described above, according to the present invention, when the spray coating button is uniformly coated from the inside of the watch case body with glass bonded to the entire surface or a portion thereof by the electrostatic coating method, the glass bonding area and the pipe insertion area are uniformly coated. Since the watch is sealed without any gaps, it improves airtightness and prevents sweat and water from entering, allowing it to function as a waterproof watch.

In addition, this invention enables high airtightness to be obtained even with the glass adhesive type, which is low cost and easy to work with.

This makes it possible to provide a waterproof watch that is much cheaper than the glass fixed structure that has been conventionally used in waterproof watches.

Furthermore, by using colored paint, it is possible to achieve not only a waterproof function but also a decorative effect on the inner surface of the glass.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a conventional glass bonding type structure, FIG. 2 is a cross-sectional view of an embodiment of the present invention, and FIG. 3 is a cross-sectional view of another embodiment. DESCRIPTION OF SYMBOLS 1...Body, 1a...Pipe insertion part, 2...Glass, 3...Pipe, 4...Glass adhesive part, 5...Inner surface seal (transparent).

Claims (1)

[Scope of utility model registration request] For portable watches, liquid paint such as colorless transparent or colored nylon, acrylic, etc. is fixed by spraying, electrostatic coating, etc. on the whole or part of the inside of the case where the glass adhesive type or pipe is inserted. , an internally sealed structure of a portable wristwatch, characterized in that the glass adhesive part and the pipe insertion part are sealed.