Isolation apparatus for electronic equipment

• US 6,501,019 B2
• Filed: 11/08/2001
• Issued: 12/31/2002
• Est. Priority Date: 09/26/1996
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Sato, Noriyoshi, Terao, Shinichi
• Primary Examiner(s): Reichard, Dean A.
• Assistant Examiner(s): OLIVA, CARMELO B
• Application Number:
  US09/986,440
• Publication Number:
  US 20020027009A1
• Time in Patent Office: 418 Days
• Field of Search: 174/35.R, 174/35.GC, 361/799, 361/800, 361/816, 361/818, 455/90, 455/117, 343/841
• US Class Current: 174/377
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 2001/3894 Waterproofing of transmission device
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/185 Improving the rigidity of the casing or resistance to shocks
• CPC Class Codes: H04M 19/047 Vibrating means for incoming calls
• CPC Class Codes: H05K 9/0033 disposed on both PCB faces
• CPC Class Codes: H05K 9/0037 Housings with compartments containing a PCB, e.g. partitioning walls
• CPC Class Codes: Y10S 174/35 Box or housing mounted on substrate or PCB
• CPC Class Codes: Y10S 277/92 Seal including electromagnetic shielding feature

Abstract

An electromagnetic isolation apparatus for an electronic device such as a portable telephone is provided which includes first and second shield cases and elastic members such as rubber cushions. The first and second shield cases are disposed within a casing of the electronic device to surround at least part of both surfaces of a printed circuit board mounted within the electronic device. The elastic members are interposed between an inner wall of the casing of the electronic device and an outer surface of the first shield case and between the inner wall of the casing and an outer surface of the second shield case to produce elastic pressures urging the first and second shield cases into conductive engagement with the printed circuit board.

Claims

1. An electromagnetic apparatus comprising:

a printed circuit board;

a circuit including a radio communication section printed on said printed circuit board;

a vibration generating device including a motor and an eccentric weight; and

a shield casing covering the circuit of said printed circuit board;

wherein said shield casing is connected with ground through said printed circuit board, and

said shield casing is disposed between the radio communication section of the circuit of said printed circuit board and said vibration generating device, and

wherein said shield casing comprises a holding portion formed therein, and said vibration generating device is covered with an elastic member and is installed in the holding portion of said shield casing.