Housing for electronic circuit

• US 20040145860A1
• Filed: 01/16/2004
• Published: 07/29/2004
• Est. Priority Date: 01/20/2003
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Shindo, Yusuke
• Granted Patent: US 7,122,928 B2
• Time in Patent Office: Days
• US Class Current: 361/622
• CPC Class Codes: B60R 16/0239 Electronic boxes
• CPC Class Codes: H02K 11/0141 Shields associated with casings, enclosures or brackets
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H05K 1/0218 by printed shielding conductors, ground planes or power plane H05K1/0236 takes precedence
• CPC Class Codes: H05K 1/0263 High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board H05K1/0293 takes precedence
• CPC Class Codes: H05K 2201/09118 Moulded substrate
• CPC Class Codes: H05K 2201/09754 Connector integrally incorporated in the printed circuit board [PCB] or in housing
• CPC Class Codes: H05K 2201/0999 Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
• CPC Class Codes: H05K 2201/10272 Busbars, i.e. thick metal bars mounted on the printed circuit board [PCB] as high-current conductors
• CPC Class Codes: H05K 2201/2018 Presence of a frame in a printed circuit or printed circuit assembly

Abstract

A box unit is a housing having a space for containing a circuit board therein. Bus bars are insert-molded in a resin body of the box. A metal shield plate is insert-molded around the entire periphery of the box and outside the bus bars. As a result, the box has a shield and is reduced in size compared with a metal box.

Claims

1. An electronic circuit housing (131a) formed of a resin having an internal space for containing the electronic circuit (130), comprising:

bus bars (600) that are insert-molded for connecting to the electronic circuit; and

a conductive plate (700) that is insert-molded surrounding said space and arranged on the outer side of said bus bar.

2. An electronic circuit housing according to claim 1, wherein said conductive plate (700) is a metal plate (700).

3. An electronic circuit housing according to claim 1, wherein said conductive plate (700) is connected to a member (121) at ground potential.

4. An electronic circuit housing according to claim 1, wherein said electronic circuit (130) is a motor driving circuit (130) for a motor (120) to operate a compression mechanism (110) of a electric compressor (100).

5. An electronic circuit housing according to claim 5, wherein said conductive plate (700) is in contact with that part of said electric compressor (100) in which a refrigerant, sucked in by said compression mechanism (110), flows.