PROBLEM TO BE SOLVED: To provide a solenoid valve capable of reducing friction between a plunger and a valve seat, and a brake device.SOLUTION: A solenoid valve 30 includes: a solenoid 48 for generating an electromagnetic force by conducting electricity; a cylindrical member 40 made of a non-magnetic material arranged on an inner periphery of the solenoid; a movable member 41 made of a magnetic material having a restriction part 41d on the axial direction one end side, and moving in the axial direction by a suction force of the solenoid on an inner periphery of the cylindrical member; and a plunger in which movement in the radial direction is restricted by the other end part being arranged at the restriction part. When a movable amount in the radial direction of the movable member on the inner peripheral side of the cylindrical member is defined as CLa, and a movable amount in the radial direction of the plunger with respect to the restriction part is defined as CLb, the formula CLa
【課題】プランジャとバルブシートとの間のフリクションを低減することができる電磁弁およびブレーキ装置を提供する。【解決手段】電磁弁30は、通電することで電磁力を発生するソレノイド48と、ソレノイドの内周に配置された非磁性材の筒状部材40と、軸方向一端側に規制部41dを有し、筒状部材の内周でソレノイドの吸引力によって軸方向に移動する磁性材の可動部材41と、規制部に他端部が配置されることで径方向の移動が規制されるプランジャと、を備え、筒状部材の内周側における可動部材の径方向への移動可能量をCLa、規制部に対するプランジャの径方向への移動可能量をCLb、としたときに、CLa<CLbの式を満足するようにした。【選択図】図5
SOLENOID VALVE AND BRAKE DEVICE
電磁弁およびブレーキ装置
2017-09-21
Patent
Electronic Resource
Japanese