Electronic control unit having positioning member for positioning base substrate and electronic device
An electronic control unit includes a base substrate, an electronic device, and a positioning member. The base substrate has a first connector. The electronic device is mounted on the base substrate substantially orthogonal to the base substrate. The electronic device includes a wiring board and a second connector disposed on the wiring board to be electrically connected to the first connector. The positioning member is disposed between the base substrate and the electronic device and positions the first connector and the second connector relative to each other. The positioning member includes a first protrusion and a second protrusion. The first protrusion is inserted into a first positioning hole of the base substrate to position the positioning member with respect to the base substrate. The second protrusion is inserted into a second positioning hole of the wiring board to position the positioning member with respect to the wiring board.
1 . An electronic control unit comprising:
a base substrate including a first connector;
an electronic device mounted on the base substrate to be substantially orthogonal to the base substrate, the electronic device including a wiring board and a second connector disposed on the wiring board to be electrically connected to the first connector; and
a positioning member disposed between the base substrate and the electronic device and positioning the first connector and the second connector relative to each other, wherein
the positioning member includes:
a first protrusion inserted into a first positioning hole of the base substrate to position the positioning member with respect to the base substrate, the first positioning hole being disposed along a thickness direction of the base substrate; and
a second protrusion inserted into a second positioning hole of the wiring board to position the positioning member with respect to the wiring board, the second positioning hole being disposed along a planar direction of the wiring board.
2 . The electronic control unit according to claim 1 , wherein
the positioning member includes a clamping part that holds the electronic device in a thickness direction of the electronic device to position the positioning member with respect to the wiring board; and
the clamping part includes a contact portion that is in contact with the wiring board.
3 . The electronic control unit according to claim 1 , wherein
the electronic device is one of a plurality of electronic devices mounted on the base substrate,
the positioning member is one of a plurality of positioning members of a same number as the plurality of electronic device, and
the plurality of positioning members are correspondingly provided for the plurality of electronic devices, and individually positioned with respect to the plurality of electronic devices.
4 . The electronic control unit according to claim 1 , wherein
the second protrusion is a single protrusion member.
5 . The electronic control unit according to claim 1 , wherein
the positioning member includes a reinforcing portion that projects in a direction intersecting the second protrusion.
6 . The electronic control unit according to claim 2 , wherein
the positioning member includes a plurality of the clamping parts holding one electronic device.
7 . The electronic control unit according to claim 2 , wherein
the clamping part further includes a pressing member that presses the electronic device against the contact portion.
8 . The electronic control unit according to claim 7 , wherein
the electronic device includes a case that accommodates the wiring board therein, and
the pressing member presses the case as a part of the electronic device.
9 . The electronic control unit according to claim 7 , wherein
the pressing member is a leaf spring.
10 . The electronic control unit according to claim 7 , wherein
the clamping part includes a fixing portion to which the pressing member is fixed.
11 . The electronic control unit according to claim 8 , wherein
the case has a first opening portion in which the second protrusion is disposed, and a second opening portion in which a part of the clamping part is disposed.
12 . The electronic control unit according to claim 1 , wherein
the second protrusion is disposed coaxial with a center axis of the first protrusion.
13 . The electronic control unit according to claim 12 , wherein
the positioning member includes a clamping part that holds the electronic device in a thickness direction of the electronic device to position the positioning member with respect to the wiring board; and
the clamping part includes a contact portion that is in contact with the wiring board and disposed along the center axis of the first protrusion.