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Small portable instrument

A portable device and miniature technology, which is applied in transportation and packaging, spring protection, clocks and watches, etc., can solve the problems of water seepage and serious displacement of gaskets, achieve small permanent compression deformation, excellent waterproof and moisture-proof performance, and realize maintenance-free performance effect

Inactive Publication Date: 2007-09-05
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be a problem of water seepage at the position where the waterproof gasket 15 is under pressure and becomes weaker.
Moreover, when the waterproof gasket is deformed, the displacement of the gasket will become more serious with the rotation of the adjusting rod and the reciprocating movement in the pipe of the adjusting rod.

Method used

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  • Small portable instrument
  • Small portable instrument
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Examples

Experimental program
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Embodiment 1 and 2

[0086] 4 and 5 are schematic sectional views illustrating a waterproof structure of an exterior member including a rubber gasket.

[0087] The following description will focus on the back cover O-ring 1 used for the waterproof sealing structure of the watch case 4 and the back cover 7 of the watch exterior shown in FIG. 5 .

[0088] Neoprene (JSR 1068 (trade name) produced by LSR Co. Ltd.) was used as a raw material rubber; zinc oxide was used as a curing agent; carbon black was used as a reinforcing agent; zinc diethyldithiocarbamate (Ouchi Shinko Chemical Industry A curing accelerator EZ (trade name) produced by Co., Ltd. was used as the curing accelerator.

[0089] According to the formula in Table 1, used in Examples 1 and 2, the raw rubber and other ingredients were blended together with a Banbury mixer or a pressure kneader. Subsequently, zinc oxide and a curing accelerator were mixed thereinto, and the mixture was rolled into an uncured rubber sheet having a given thic...

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Abstract

A miniature portable equipment in the present invention comprising a packing comprising a butyl rubber having a crosslinking structure composed of carbon to carbon bonds of the formula: <CHEM>

Description

technical field [0001] The invention relates to a miniature portable device with a designated sealing pad, especially a watch with a designated sealing pad or a miniature portable information device terminal with a designated sealing pad. More specifically, the present invention relates to a long-life watch utilizing, for example, a long-life battery or a solar cell that converts light energy into electricity; or a mechanical watch that does not require a battery, or that can be cleaned, for example, by ultrasonic cleaner to clean the watch. These watches have excellent long-term water resistance because of the packing that prevents the infiltration of water and steam from the outside and prevents the infiltration of human sweat and greasy substances, etc. Background technique [0002] A tiny portable device, a watch being a prime example, needs to be waterproof because we wear it every day. [0003] For example, try Fig. 4, which shows a partial cross-section of a watch o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/10G04B37/08C08F10/08C08F10/10
CPCG04B37/081F16J15/3284F16J15/102C08F10/10G04B37/08Y10T428/31888C08F10/08
Inventor 木川计介和濑田隆行
Owner CITIZEN WATCH CO LTD
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