| 摘要 |
<p>PURPOSE: To eliminate obstacle on a surface for mounting by inserting a pipe of flexible plastics having a low frictional coefficient through a guide hole, fixing one end of the pipe to the first half of a casing and putting it in communication with the second nipple, and furnishing an O-ring between the pipe and a rod. CONSTITUTION: A pipe 1 made of flexible plastics having a low frictional coefficient is inserted to one end of a rod 7 into a guide hole 7c provided in its axis, and this end is installed in the first half la of a casing 1 surrounding the first chamber 3 and put in communication with the second nipple 14. An O-ring 19 is installed between the pipe 15 and rod 7. Thereby obstacle on the surface for mounting is eliminated, and there is no risk that the component parts of the pressure lead-in part to the second chamber 4 pry each other with movement and swinging of the rod 7 to ensure generation of smooth motions, and risk of poor operation does not exist any more.</p> |
