SHIELD STRUCTURE FOR PORTABLE EQUIPMENT

PROBLEM TO BE SOLVED: To provide the shield structure of the portable equipment in which defective conduction caused by depressing of a pushbutton is surely prevented without causing large size or thick thickness of the portable equipment and electromagnetic shield of a radio circuit is conducted su...

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Bibliographic Details
Main Authors TATEISHI SUMIHIRO, SATO TAKESHI, KUMAKOSHI TAKAO, MURATA KAZUO, TAKAYASU TETSUFUMI
Format Patent
LanguageEnglish
Published 03.02.1998
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SWITCHES
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
PRINTED CIRCUITS
RELAYS
SELECTORS
TELEPHONIC COMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To provide the shield structure of the portable equipment in which defective conduction caused by depressing of a pushbutton is surely prevented without causing large size or thick thickness of the portable equipment and electromagnetic shield of a radio circuit is conducted surely. SOLUTION: An interface board 21 and a circuit mount board 22 are contained in parallel in a housing 10 of the portable telephone set, a switch section switched through depression of a pushbutton 13 is provided to the interface board 21 and a radio circuit section 26 and a control circuit section 25 are provided separately to a front side and a rear side of the circuit mount board 22, a conductive front side shield case 31 is interposed between the circuit mount board 22 and the interface board 21, and a conductive rear side shield case 32 is interposed between the circuit mount board 22 and the housing 10 and ribs 31d, 32d are formed to the shield cases 31, 32 respectively for electromagnetic shield around the radio circuit board 26 in press contact with the circuit mount board 22.
Bibliography:Application Number: JP19960206601