发明名称 |
ACTUATOR |
摘要 |
The purpose of the present invention is to provide an actuator such that egress of a lubricant to the outside of a housing during forward and rearward movement of a rod is prevented. The actuator comprises: a housing having a rod through-hole; a rod which passes through the rod through-hole such that a portion thereof protrudes to the outside of the housing and is driven forward and rearward; a first rod sealing member which is arranged near the outside of the housing in the rod through-hole; a second rod sealing member arranged near the inside of the housing in the rod through-hole; a lubricant supply part provided in the housing and supplying lubricant to the rod through-hole; and a pressure change absorption groove which is provided between the first rod sealing member and the second rod sealing member in the rod through-hole to communicate with the lubricant supply part, and forms an air layer while absorbing the pressure changes associated with the forward and rearward movement of the rod. |
申请公布号 |
US2015330497(A1) |
申请公布日期 |
2015.11.19 |
申请号 |
US201414761541 |
申请日期 |
2014.01.17 |
申请人 |
IAI CORPORATION |
发明人 |
AMANO Katsutoshi;OTSUKA Yukiharu |
分类号 |
F16H57/029;F16H57/04;F16H25/20 |
主分类号 |
F16H57/029 |
代理机构 |
|
代理人 |
|
主权项 |
1. An actuator comprising:
a housing provided with a rod through-hole; a rod penetrating through the rod through-hole and projecting partially towards outside the housing and driven in the forward/rearward direction; a first rod seal member provided in the rod through-hole on the side closer to the outside of the housing; a second rod seal member provided in the rod through-hole on the side closer to an inside of the housing; a lubricant feeding part provided in the housing and which feeds lubricant to the rod through-hole; and a pressure change absorption groove, provided between the first rod seal member and the second rod seal member of the rod through-hole in a state of being communicated with the lubricant feeding part, in which an air layer is formed, and which absorbs pressure change associated with forward/rearward movement of the rod. |
地址 |
Shizuoka-shi, Shizuoka JP |