Button top, button switch part and manufacture thereof

A technology of switch parts and top parts, applied in the direction of electric switches, electrical components, legends, etc., can solve the problem of not being able to provide key top components, and achieve the effect of eliminating the damage of visibility

Inactive Publication Date: 2006-06-07
SHIN-ETSU POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the prior art cannot provide key top elements of such small thickness

Method used

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  • Button top, button switch part and manufacture thereof
  • Button top, button switch part and manufacture thereof
  • Button top, button switch part and manufacture thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0141] On a transparent polyester sheet having a thickness of 125 μm, color symbols and color symbols as a design of the key top were printed on a transparent polyester sheet having a thickness of 125 μm with a thermal conduction sublimation type printer purchased from Victor Co. of Japan, Ltd. under the trade name "Trueprint-3500". Geometric patterns. Color symbols and geometric patterns are designed with a microcomputer.

[0142] Then, a translucent white polyester having a thickness of 25 µm was laminated on the back surface of the polyester sheet thus printed to form a white layer, constituting a printed sheet.

[0143] Next, the transparent key top member was formed from a thermoplastic polypropylene resin material to have a predetermined configuration by means of an injection molding machine. A keytop member was prepared by fixedly mounting twenty of these transparent keytop members on a printed sheet using a transparent polyester adhesive available from Hitachi Kasei P...

example 2

[0145] On a transparent polyester sheet having a thickness of 125 μm, color markings or symbols of a design as key top members and Geometric patterns, thereby preparing printed sheets of key tops. The code and geometric patterns are designed with a microcomputer.

[0146] An aluminum film was then deposited by hot embossing on a rear surface of the thus formed printed sheet to provide a silver colored layer.

[0147] Then, a photolithographic polypropylene resin material commercially available from Mitsubishi Rayon Co., Ltd. under the trademark DIABEAM UT-1022 was cast using a pre-configured mold, and then irradiated with ultraviolet rays, thereby A transparent key top element is formed.

[0148] The transparent key top elements are then bonded to the printed sheet by heating with the aid of a transparent silicone adhesive commercially available from Shin-Etsu Chemical Co., Ltd. under the trade mark KE-1934 to produce key tops. pieces.

example 3

[0150] A printed sheet of a key top was prepared by printing color symbols and geometric patterns as the design of the key top on a transparent polyester sheet by means of an electrostatic transfer printer. Such an electrostatic transfer printer is commercially available from Canon Corporation under the trademark NEW PIXEL Dio 950. Color symbols and geometric patterns are designed with a microcomputer.

[0151] Then, a translucent white polyester sheet was laminated on a rear surface of the above polyester sheet to provide a printed sheet.

[0152] Next, a thermoplastic polypropylene resin material is formed into a predetermined configuration of the transparent key top member by means of an injection molding machine, and the member is bonded or connected to the printed sheet, thereby producing the key top member.

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Abstract

A manufacturable key top piece, the design of which is easily improved and modified, and is suitable for data of various design shapes. The key top component includes a printing sheet composed of a matrix sheet, a printing layer and a white or silver colored layer as required, and a transparent key top element fixedly bonded to the printing sheet. The on-demand printed layer is printed on the substrate sheet in the form of symbols or the like by an on-demand printer. A button switch component includes such a key top element and a light-transmissive rubber covering base adhered to the key top element.

Description

technical field [0001] The present invention relates to a key top suitable for a mobile communication device such as a portable telephone, a home telephone, an electronic pocket notebook, a measuring instrument, a vehicle mounted switch, a remote control device, a data input unit of a computer or a microcomputer, a switch unit or the like, and the present invention also relates to a member for a push button switch (hereinafter referred to as a push button switch member) comprising such a key top member and its manufacture The method of this member, more specifically, relates to a key top member suitable not only for a display portion for displaying a letter, a symbol, a pattern, etc., and having improved design performance, possible visibility and durability, and is suitable for a backlit push button switch and a push button switch member including such a key top member. Background technique [0002] Generally, in a push button switch for a unit of a mobile communication de...

Claims

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Application Information

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IPC IPC(8): H01H13/14H01H11/00H01H13/705
CPCH01H13/705H01H2009/187H01H2219/034H01H2219/06H01H2221/006H01H2221/07H01H2229/054
Inventor 清水隆男三重野聪长泽务雫田能成
Owner SHIN-ETSU POLYMER CO LTD
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