Electronic control apparatus
First Claim
1. 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, andwherein said resilient member is fixedly secured to said heat sink with said housing interposed therebetween by a fastening element.
1 Assignment
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Accused Products
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.
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Citations
12 Claims
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1. An electronic control apparatus comprising:
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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, and wherein said resilient member is fixedly secured to said heat sink with said housing interposed therebetween by a fastening element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification