KEYBOARD SWITCH

PURPOSE:To provide a keyboard switch having dust-proofing and water-proofing structure in which a low cost membrane contact of a single-layer structure can be used, for which assembling processes are simplified, and in which abnormal sound is not generated even when a key top is pushed diagonally. C...

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Bibliographic Details
Main Author ISHII KAZUMITSU
Format Patent
LanguageEnglish
Published 12.12.1995
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:PURPOSE:To provide a keyboard switch having dust-proofing and water-proofing structure in which a low cost membrane contact of a single-layer structure can be used, for which assembling processes are simplified, and in which abnormal sound is not generated even when a key top is pushed diagonally. CONSTITUTION:A resin frame 3 is positioned on a surface of a membrane contact 2 laminated on a reinforcement plate 1, a contact rubber 5 is fixed to a forward end of a key stem 4a of a key top 4 guided by a slide cylinder 3a of the resin frame 3, and the membrane contact 2 is opened/closed by the contact rubber 5. In this keyboard switch, a click rubber sheet 6 is laminated on a surface of the resin frame 3, and a click part 6a of the click rubber sheet 6 is applied to a lover surface of the key top 4.
Bibliography:Application Number: JP19940141259