Electronic control device
View Patent ↗An electronic control device has a resin case to which a circuit board having a terminal contact pad is fixed; a hydraulic unit having an electromagnetic solenoid which controls a hydraulic circuit and a pressure sensor which detects a pressure of the hydraulic circuit; a motor post having a current-carrying member which electrically connects a motor and the circuit board and extending from the resin case and inserted in the hydraulic unit; and a fixing member which is provided at the resin case and holds an outer periphery of the pressure sensor. Positioning between the pressure sensor and the terminal contact pad of the circuit board is made by the motor post inserted in the hydraulic unit and fixation of the pressure sensor by the fixing member.
1. An electronic control device comprising:
a hydraulic unit having an electromagnetic solenoid which controls a hydraulic circuit;
a circuit board having a terminal contact pad;
a resin case to which the circuit board is fixed;
a pressure sensor detecting a pressure of the hydraulic circuit and having a sensor terminal which contacts the terminal contact pad;
a motor installed in the hydraulic unit;
a motor post having a current-carrying member which electrically connects the motor and the circuit board, the motor post provided at and protruding from the resin case toward the hydraulic unit; and
a fixing member provided at the resin case and holding an outer periphery of the pressure sensor, the resin case being fixed to the hydraulic unit so as to cover the electromagnetic solenoid, the pressure sensor, and the motor post,
wherein, when the resin case is fixed to the hydraulic unit, the motor post is inserted in the hydraulic unit and the pressure sensor is fixed by the hydraulic unit and the fixing member, which makes positioning between the terminal contact pad and the sensor terminal of the pressure sensor, with the motor post defining a positioning axis, and establishes electric connection between the terminal contact pad and the sensor terminal of the pressure sensor.
2. The electronic control device as claimed in claim 1 , wherein:
a pair of fixing members are arranged at least at both sides of the pressure sensor that is located at an opposite side to the motor post, and hold the outer periphery of the pressure sensor.
3. The electronic control device as claimed in claim 1 , wherein:
the fixing member is formed by an elastic arm portion that has elasticity.