US 2008/0278918 A1 · ELECTRONIC CONTROL APPARATUS

Abstract

An electronic control apparatus can be reduced in size and cost by removing a metal substrate part. The apparatus includes a housing having a pair of opening portions at its opposite sides, a heat sink attached to one of the opening portions of the housing, a pair of semiconductor switching elements mounted on the heat sink, a circuit board arranged in opposition to the heat sink, a plurality of conductive plates electrically connecting the circuit board and the semiconductor switching elements to each other, and a plate spring urging the semiconductor switching elements against the heat sink. The plate spring has engagement portions press-fitted to and engaged with inner sides of holding portions which are formed on the housing, and the housing has engagement portions engaged with protruded portions of the heat sink.

Claims12

Dependent claims

An electronic control apparatus comprising:

a housing that is made of an insulating resin and has a pair of opening portions at opposite sides thereof, respectively;
a heat sink that is attached to one of said opening portions of said housing;
a power device that is mounted on said heat sink;
a circuit board that is arranged in opposition to said heat sink, and has an electronic circuit including a control circuit for controlling said power device;
a plurality of conductive plates that have their base portions held by said housing and electrically connect said circuit board and said power device to each other;
and
a resilient member that urges said power device to said heat sink;
wherein said resilient member is engaged with said housing 3.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/934,448Filed 2 Nov 2007

Priority

JP 2007-1223857 May 2007

Published

13 Nov 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

B62D 5/0406
Characterised by constructional features, e.g. common housing for motor and gear box: including housing for electronic control unit
H05K 7/2049
Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing: pressing means…
H05K 7/20854
For automotive electronic casings: heat transfer by conduction from internal heat source to heat radiating structure
B62D
Motor vehicles

Electronic control apparatus

Life of this patent

Electronic control apparatus

Life of this patent

Abstract

Claims12