JPS596469Y2 - Side structure for mobile watch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a side structure for a portable watch such as a wristwatch, and particularly to a side structure that uses expensive materials such as metal.

The side structure commonly used in the past is shown in Fig. 1.

In FIG. 1, reference numeral 1 denotes a cover glass, which is fixed to the body 2 by adhesive.

The back cover 3 is bitten and fixed to the body 2.

A back cover packing 4 is compressed in the axial direction between the body 2 and the back cover 3 to prevent water from entering.

In this structure, when using high-priced materials such as gold or platinum for the shell 2, it is necessary to minimize the weight of the material used for the shell 2 in order to reduce the manufacturing cost. The key is to limit it.

However, in the structure shown in FIG. 6, if an attempt is made to reduce the thickness of the material of the case 2, the case will be deformed when the back cover 3 bites into the case and is fixed, resulting in deformation of the bond between the glass and the case. Also, the problem arises that the adhesive surface peels off.

In addition, if you try to secure an effective space for the back cover packing to prevent sweat and moisture from entering the sides from the outside, the thickness of the body will naturally be restricted and it will be impossible to make it thinner. It was something.

This proposal aims to eliminate the above-mentioned drawbacks and provide an exterior structure that is thin and can be manufactured at low cost by using precious metals with no functional problems.One example of this is explained with reference to FIG. In the figure, 1 is a cover glass.

The cover glass is a hollow-shaped body 1 made of plate material with almost uniform thickness.
It is glued and fixed to 2.

An inner barrel 13 is accommodated in the barrel 12 . The back cover 14 is bitten and fixed to the inner case 13.

The inner shell 13 is fixed to the shell 12 by inserting a fixing pin 15 into a hole made in the inner shell so that the tip of the pin 15 catches on the shoulder 12a at the bottom of the shell 12. It is.

Back cover packing 16 that prevents water from entering from the back cover part
is compressed in the axial direction between the barrel 12 and the back lid.

In the structure of this proposal, the back cover 14 bites into the inner shell 13 and fixes it, so if the inner shell is made of a material with excellent strength such as stainless steel or nickel silver, the thickness of the shell 12 can be reduced. In addition, there is no need to worry about deformation of the body due to the insertion of the back cover.
If 2 a is manufactured as a separate member and fixed to the cylinder by means such as brazing, there is no need to increase the thickness of the cylinder 12 in order to secure a space for accommodating the back cover packing, so the plate thickness of the cylinder can be made thinner. becomes possible.

Therefore, when precious metals are used for the body material, the plate thickness can be made thinner, which has the effect of greatly reducing manufacturing costs.

Furthermore, since the inner shell 13 and the shell 12 are locked together by inserting a fixing pin, the inner shell and the shell can be separated by removing the pin.

Therefore, when the weight of the precious metal barrel 12 needs to be confirmed for commercial purposes, the weight can be easily measured.

As mentioned above, this structure can also provide a side in which the body 12 is made of a brittle material such as cemented carbide, which is concerned about deformation, in that the deformation force caused by the biting of the back cover does not affect the body. Such effects can also be expected.

Note that locking means other than the fixing pin 15 are used between the shell 12 and the inner shell 13.
It may be used in between.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional side structure, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1... Cover glass, 12... Body, 1
3...Inner body, 15...Fixing pin, 14
...Back cover, 16...Back cover gasket.

Claims (1)

[Scope of utility model registration request] On the side of the portable watch, it has a body formed from a plate material of approximately uniform thickness, an inner body that is housed in the body and has a locking part with the back cover, and the back cover packing is compressed between the back cover and the body. A side structure for a portable watch, characterized in that the inner case is fixed to the case by a detachable locking means.