Hydraulic pressure control device

1. A hydraulic pressure control device comprising:

a hydraulic pressure unit, in which a solenoid valve for hydraulic pressure control is assembled with a hydraulic pressure block; and

an electronic control unit, which includes a circuit board having a drive control circuit of the solenoid valve and stored inside a resin case,

wherein a solenoid coil is fit onto the main body of the solenoid valve fixed to the hydraulic pressure block of hydraulic pressure unit,

wherein the solenoid coil is elastically pressed against and fixed to the hydraulic pressure block by a coil pressing arm, which extends in a direction of a surface of the circuit board and is integrally formed with the resin case,

wherein at least one of a thickness and width of the coil pressing arm is continuously reduced from a root side of the arm connected to the resin case toward a front end side over an entire length of the coil pressing arm,

wherein a front end of the coil pressing arm is a free end, and

wherein a protrusion configured to press the solenoid coil is provided at the front end of the coil pressing arm, the protrusion protruding in a direction orthogonal to the extending direction of the coil pressing arm.

2. The hydraulic pressure control device according to claim 1 ,

wherein the front end of the coil pressing arm extends past a center of the coil in a direction of increasing distance from an arm connection point of the case toward the front end of the coil pressing arm.

3. The hydraulic pressure control device according to claim 1 ,

wherein a yoke integrated with the solenoid coil is configured by end walls facing both ends of the coil and an intermediate wall whose both ends are connected to sides of the end walls so that the yoke has a U-shape in a side view, and

wherein the coil pressing arm is biased to the intermediate wall of the yoke, and one of the end walls of the yoke is pressed by the front end of the coil pressing arm in the vicinity of the intermediate wall of the yoke rather than a center of the coil.

4. The hydraulic pressure control device according to claim 1 ,

wherein the coil pressing arm is formed along at least part of an outer circumference of the solenoid coil, as viewed from an axial direction of the coil.

5. The hydraulic pressure control device according to claim 1 ,

wherein at least one coil pressing arm is provided for respective coils.

6. The hydraulic pressure control device, according to claim 1 ,

wherein the coil pressing arm is substantially planar from the root side of the coil pressing arm to the front end side of the coil pressing arm.

7. The hydraulic pressure control device, according to claim 6 ,

wherein the width of the coil pressing arm is continuously reduced from the root side toward the front end side, and

wherein the thickness of the coil pressing arm is constant from the root side to the front end side.

8. A hydraulic pressure control device comprising:

a hydraulic pressure unit, in which a solenoid valve for hydraulic pressure control is assembled with a hydraulic pressure block; and

an electronic control unit, which includes a circuit board having a drive control circuit of the solenoid valve and stored inside a resin case,

wherein a solenoid coil is fit onto the main body of the solenoid valve fixed to the hydraulic pressure block of hydraulic pressure unit,

wherein the solenoid coil is elastically pressed against and fixed to the hydraulic pressure block by a coil pressing arm integrally formed with the resin case, and

wherein the coil pressing arm is substantially bent along a part of an outer circumference of the coil in a view taken in an axial direction of the coil.