JOYSTICK PILOT VALVE EQUIPPED WITH THE STRUCTURE FOR PREVENTING OIL LEAKAGE

摘要

A joystick pilot valve equipped with the structure for preventing oil leakage comprises: a valve body; spool installed in the valve body to be moved between the supply port and the hydraulic fluid chamber; spool hole installed in the valve body; pushing cam connected to the upper portion of the valve body by joint; joystick lever connected to the pushing cam to make the pushing cam move like seesaw by the operation and make the spool move in the spool hole forward and backward to make the supply port connected or disconnected to the hydraulic fluid chamber; outer boot provided at the valve body to cover the outer periphery of the valve body, the pushing cam and the joystick lever; inner boot arranged inside of the outer boot and forming oil leak storage chamber sealed from the outer side at the upper portion of the guide hole.

主权项

1. A joystick pilot valve equipped with the structure for preventing oil leakage comprising:
a valve body provided with hydraulic fluid chamber and at least one or more of supply port in the inner portion; at least one or more of spool which are installed in the valve body to be moved between the supply port and the hydraulic fluid chamber and controlling the hydraulic fluid flow; spool hole which are installed in the valve body in order to make the spool move forward and backward between the supply port and the hydraulic fluid chamber and which are connected with the hydraulic fluid chamber or disconnected with the hydraulic fluid chamber while the spool moves forward and backward; pushing cam connected to the upper portion of the valve body by joint and moved like as seesaw; joystick lever which is connected to the pushing cam to make the pushing cam move like seesaw by the operation and make the spool move in the spool hole forward and backward in order to make the supply port connected or disconnected to the hydraulic fluid chamber; outer boot provided at the valve body in order to cover the outer periphery of the valve body, the pushing cam and the joystick lever; inner boot which is arranged inside of the outer boot and forms oil leak storage chamber sealed from the outer side at the upper portion of the guide hole in which the spool of the valve body moves forward and backward.