Actuator and fluid pressure control circuit having the same
AssigneeHonda Motor Co., Ltd.
InventorsTomoaki MUKAI, Shunsuke YOSHIDA, Shogo KOBAYASHI
Life of this patent
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Abstract
An actuator capable of preventing the inside of a cylinder from being scratched is provided. A two-way piston includes a cylinder having an opening, a piston, and a stroke sensor that detects a position of the piston. The stroke sensor includes a stay that extends from a portion exposed from the opening of the piston to the outside of the cylinder, a member to be detected that is attached to the stay, and a sensor that detects a position of the member to be detected. The piston including a fixing hole having a depth smaller than a diameter of the piston in the portion exposed from the opening. The stay is fixed by a bolt that is inserted into the fixing hole.
Claims12
An actuator that is provided in a fluid pressure control circuit, the actuator comprising:
- a cylinder;
- a piston that is inserted into the cylinder and moves in an axial direction inside the cylinder according to a supplied fluid pressure;
- and
- a stroke sensor that detects a position of the piston,
- wherein an opening is formed in a circumferential surface of the cylinder,
- the stroke sensor includes a stay that is attached to move integrally with the piston and extends in a direction intersecting the axial direction from a portion exposed from the opening of the piston to the outside of the cylinder, a member to be detected that is attached to a portion of the stay located outside the cylinder, and a sensor that detects a position of the member to be detected,
- the piston has a bottomed fixing hole in the portion exposed from the opening, and
- the stay is fixed by a fixing member that is inserted into the fixing hole.
Dependencies are inferred from the claim text.