Mounting structure of on-vehicle circuit unit and on-vehicle circuit unit

Mounting structure of on-vehicle circuit unit and on-vehicle circuit unit

  • CN 1,852,817 B
  • Filed: 09/17/2004
  • Issued: 08/22/2012
  • Est. Priority Date: 09/19/2003
  • Status: Active Grant
First Claim
Patent Images

1. the mounting structure of a vehicle mounted circuit unit is characterized in that:

  • Above-mentioned vehicle mounted circuit unit comprises circuit body, constitutes power circuit;

    The casing main body is accommodated this circuit body, and this casing main body is made up of insulating material, is the frame shape all around that surrounds said circuit body;

    And thermal component;

    It is made up of metal sheet;

    The foregoing circuit body to be being in the medial surface that can heat conducting state be fixed on this thermal component, and above-mentioned casing main body to be to be in the medial surface that the state that surrounds said circuit body overlaps this thermal component, and the lateral surface of this thermal component is a heat delivery surface;

    Above-mentioned vehicle mounted circuit unit;

    Lateral surface at above-mentioned thermal component all is exposed to above-mentioned casing main body;

    And the lateral surface of this thermal component can be to vehicle body thermal radiation ground and be separated by certain clearance and giving under the state in opposite directions of this vehicle body, is installed on the above-mentioned vehicle body;

    Above-mentioned thermal component comprises to be fixed on the installation portion on this vehicle body with the vehicle body state of contact;

    And;

    There is dislocation between the contact surface of above-mentioned installation portion and above-mentioned vehicle body and the lateral surface of above-mentioned thermal component;

    When above-mentioned installation portion is fixed on the above-mentioned vehicle body, above-mentioned thermal component except that be separated by certain clearance and giving in opposite directions of this lateral surface and above-mentioned vehicle body installation portion;

    Above-mentioned vehicle mounted circuit unit is exposed to exterior state with the lateral surface of above-mentioned thermal component and is assembled on the common connection box of above-mentioned vehicle mounted circuit unit and other circuit bodies with other circuit bodies,Above-mentioned connection box;

    Have lower part box and upper box body;

    Above-mentioned vehicle mounted circuit unit is assembled in this lower part box from state and other circuit bodies that the sidewall of above-mentioned lower part box exposes to the outside with the lateral surface of above-mentioned thermal component;

    And in be separated by certain clearance and giving under the state in opposite directions of the lateral surface that is exposed to exterior above-mentioned thermal component from this sidewall and above-mentioned vehicle body, integral installation is on this vehicle body.

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