Actuator or suspension
AssigneeThk Co., Ltd.
InventorsTakashi Oshida, Takashi Sakuyama, Tetsuhiro Nishide, Hiroshi Kaneshige, Sho Taniguchi
Life of this patent
Estimating the term…
Abstract
An actuator whose total length can be reduced is provided. An actuator (2) includes: a casing (7); a hollow shaft (8) rotatably supported by the casing (7) via a bearing (9a, 9b), the hollow shaft (8) including a bottom portion (8b); a screw shaft (14) coupled to the bottom portion (8b) of the hollow shaft (8), the screw shaft (14) sharing a common center line with the hollow shaft (8); and a nut (15) threadedly connected to the screw shaft (14). The nut (15) is capable of moving in an axial direction of the screw shaft (14) to enter between the hollow shaft (8) and the screw shaft (14).
Claims17
An actuator comprising:
- a casing;
- a hollow shaft rotatably supported by the casing via a bearing, the hollow shaft including a bottom portion;
- a screw shaft coupled to the bottom portion of the hollow shaft, the screw shaft sharing a common center line with the hollow shaft;
- and
- a nut threadedly connected to the screw shaft, wherein
- the screw shaft is coupled to the hollow shaft so as to be incapable of rotating relative to the hollow shaft and incapable of moving in an axial direction relative to the hollow shaft, and
- the nut is capable of moving in an axial direction of the screw shaft to enter between the hollow shaft and the screw shaft.
A suspension comprising:
- a casing;
- a screw shaft rotatably supported by the casing via a bearing;
- a nut threadedly connected to the screw shaft;
- and
- a shock absorber including an inner rod, wherein
- the nut is coupled to the inner rod of the shock absorber,
- the inner rod is coupled to the nut so as to be incapable of rotating relative to the nut and incapable of moving in an axial direction relative to the nut, and
- a hollow portion of the inner rod allows the screw shaft to enter.
A suspension comprising:
- a casing;
- a screw shaft rotatably supported by the casing via a bearing;
- a nut threadedly connected to the screw shaft;
- a projection fixed to an outer surface of the casing;
- and
- an anti-rotation member coupled to the nut, including a groove formed to allow the projection to fit therein, to prevent the rotation of the nut,
- wherein the anti-rotation member is coupled to the nut so as to be incapable of rotating relative to the nut and incapable of moving in an axial direction relative to the nut.
Dependencies are inferred from the claim text.