Electromagnetic pump

Abstract

An electromagnetic pump including a pump portion that includes a cylinder that is formed with an intake port and a discharge port that are in communication with a flow passage of a fluid pressure circuit, a pin groove, and a piston that through a reciprocal movement inside the cylinder suctions a fluid from the intake port and discharges the fluid from the discharge port; and an electromagnetic portion that reciprocates the piston. Inserting the pump portion inside a fluid pressure circuit with the electromagnetic portion externally exposed from the fluid pressure circuit, and inserting a pin from outside into the pin groove incorporates the electromagnetic pump inside a fluid pressure circuit, and the pin groove is formed at a position farther from an electromagnetic portion side than the discharge port.

1 . An electromagnetic pump comprising:
 a pump portion that includes a cylinder that is formed with an intake port and a discharge port that are in communication with a flow passage of a fluid pressure circuit, a pin groove, and a piston that through a reciprocal movement inside the cylinder suctions a fluid from the intake port and discharges the fluid from the discharge port; and   an electromagnetic portion that reciprocates the piston, wherein   inserting the pump portion inside the fluid pressure circuit with the electromagnetic portion externally exposed from the fluid pressure circuit, and inserting a pin from outside into the pin groove incorporates the electromagnetic pump inside the fluid pressure circuit, and   the pin groove is formed at a position farther from an electromagnetic portion side than the discharge port.   
     
     
         2 . The electromagnetic pump according to  claim 1 , wherein
 the intake port is formed on an end surface of the cylinder on a side opposite from the electromagnetic portion side,   the discharge port is formed in a side surface of the cylinder, and   the pin groove is formed on the side surface of the cylinder.