Electronic control device and manufacturing method for same
View Patent ↗Providing an electronic control device excellent in reliability with low cost. An electronic control device includes: an electronic component; a control substrate on which the electronic component is mounted; a sealing resin for sealing the control substrate; and a metal housing case at least a portion of which is sealed with the sealing resin; a terminal for electrically connecting the control substrate with an external device; and a fixing plate for positioning and fixing the terminal with respect to the housing case. After the terminal is fixed to the housing case by the fixing plate, the terminal is electrically connected to the control substrate and subsequently a portion of the terminal and the control substrate are sealed with the sealing resin.
1. An electronic control device comprising:
an electronic component;
a control substrate on which the electronic component is mounted;
a sealing resin for sealing the control substrate;
a fixing member at least a portion of which is sealed with the sealing resin;
a connector terminal for providing an electrical connection between the control substrate and an external device; and
a fixing plate for positioning and fixing the connector terminal with respect to the fixing member, wherein
the connector terminal is mold-sealed, so as to be fixed to the fixing member by the fixing plate, such that the fixing plate is sealed by the sealing resin,
the connector terminal includes a plurality of metal terminals,
the sealing resin covers the connector terminal,
a connector housing to be fitted with an external connector is integrally formed,
the fixing member is a metal plate member and includes an exposed portion at least a portion of which is exposed from the sealing resin, and
the exposed portion includes one of a heat sink portion that dissipates heat generated from the electronic component to the outside and a fixture for vehicle body mounting provided to perform fixation to the vehicle body.
2. The electronic control device according to claim 1 ,
wherein the connector terminal is provided so as to perpendicularly penetrate the fixing plate and the fixing member.
3. The electronic control device according to claim 1 ,
wherein the fixing plate includes a pin extending toward the fixing member,
the pin is inserted into a penetration hole provided at a portion of the fixing member opposed to the fixing plate, and
the fixing plate is fixed to the fixing member by thermal caulking.
4. The electronic control device according to claim 3 ,
wherein a position fixed with the thermal caulking is covered with the sealing resin.
5. The electronic control device according to claim 4 ,
wherein the fixing plate is fixed to the fixing member by thermal caulking at least at two locations.
6. The electronic control device according to claim 3 ,
wherein a tip of the pin protrudes from the penetration hole of the fixing member after the thermal caulking, and
the diameter of the pin tip is larger than the diameter of the penetration hole.
7. The electronic control device according to claim 1 ,
wherein a material of the fixing plate is a thermoplastic resin.
8. The electronic control device according to claim 1 ,
wherein the material of the sealing resin is a thermosetting resin.
9. The electronic control device according to claim 1 ,
wherein the fixing plate is fixed to the fixing member by a snap fit.
10. The electronic control device according to claim 1 ,
wherein the fixing plate is fixed to the fixing member by a screw.
11. The electronic control device according to claim 1 ,
wherein
the fixing plate is a portion of a connector housing to be fitted with an external connector by covering the connector terminal, and
the fixing plate is formed separately from the sealing resin.
12. A method for manufacturing an electronic control device, the method comprising:
providing an electronic component;
providing a control substrate on which the electronic component is mounted;
sealing, with a sealing resin, the control substrate;
providing a fixing member at least a portion of which is sealed with the sealing resin;
providing an electrical connection, with a connector terminal, between the control substrate and an external device; and
positioning and fixing, with a fixing plate, the connector terminal with respect to the fixing member, wherein
the connector terminal is mold-sealed, so as to be fixed to the fixing member by the fixing plate, such that the fixing plate is sealed by the sealing resin,
the connector terminal includes a plurality of metal terminals,
the sealing resin covers the connector terminal,
a connector housing to be fitted with an external connector is integrally formed,
the fixing member is a metal plate member and includes an exposed portion at least a portion of which is exposed from the sealing resin, and
the exposed portion includes one of a heat sink portion that dissipates heat generated from the electronic component to the outside and a fixture for vehicle body mounting provided to perform fixation to the vehicle body.