Actuator having buffer structure
AssigneeTimotion Technology Co., Ltd.
InventorChou-Hsin Wu
Life of this patent
Estimating the term…
Abstract
An actuator includes a drive screw (32), an external tube (34), a stretchable tube (35), and a buffer structure (50). The external tube (34) is sleeved around the drive screw (32) externally. The stretchable tube (35) is passed through and connected to the external tube (34), wherein the stretchable tube (35) has a nut (351) screwed to and driven by the drive screw (32). The buffer structure (50) comprises a positioning member (51) and a buffer unit (52). The positioning member (51) is fixed to the drive screw (32). The buffer unit (52) is sleeved around the drive screw (32) and between the nut (351) and the positioning member (51). Therefore, the impact force generated during the fast falling of the stretchable tube (35) can be absorbed.
Claims16
An actuator having a buffer structure, comprising:
- a drive screw (32);
- an external tube (34) sleeved around the drive screw (32) externally;
- a stretchable tube (35) passing through and connected to the external tube (34), wherein the stretchable tube (35) has a nut (351) screwed to and driven by the drive screw (32), wherein an outer surface of one end of the nut (351) is formed with a thread, and an outer surface of another end of the nut (351) is formed with a plurality of protrusion strips;
- the nut (351) is screwed to an inner surface of the stretchable tube (35) by the thread, and the protrusion strips are exposed outside of the stretchable tube (35);
- a buffer structure (50) comprising:
- a positioning member (51) fixed to the drive screw (32);
- and
- a compressed helical spring (52) sleeved around the drive screw (32) and between the nut (351) and the positioning member (51);
- and
- a release mechanism (40) including an end shaft (41), a front base (42), a helical spring (43), and a release handwheel (44), wherein the end shaft (41) connects to an end of the stretchable tube (35) away from the nut (351), wherein the front base (42) is sleeved around and connected to an end of the end shaft (41), wherein the release handwheel (44) is sleeved around and connected at the joint of the end shaft (41) and the front base (42), wherein the helical spring (43) is disposed between the release handwheel (44) and sleeved on the end shaft (41), and the helical spring (43) extends or is compressed along an axial direction of the end shaft (41) and the release handwheel (44), whereby the end shaft (41) can selectively rotate with respect to the front base (42) via the release handwheel (44).
An actuator having a buffer structure, comprising:
- a drive screw (32);
- a stretchable tube (35);
- a nut (351) screwed to the drive screw (32), wherein the nut (351) is confined to move axially with respect to the drive screw (32);
- an outer surface of one end of the nut (351) is formed with a thread, and an outer surface of another end of the nut (351) is formed with a plurality of protrusion strips;
- the nut (351) is screwed to an inner surface of the stretchable tube (35) by the thread, and the protrusion strips are exposed outside of the stretchable tube (35);
- a buffer structure (50) comprising a compressed helical spring (52) sleeved around the perimeter of the drive screw (32) and disposed on a side of the drive screw (32) along where the nut (351) moves;
- and
- a release mechanism (40) including an end shaft (41), a front base (42), a helical spring (43), and a release handwheel (44), wherein the end shaft (41) connects to an end of the stretchable tube (35) away from the nut (351), wherein the front base (42) is sleeved around and connected to an end of the end shaft (41), wherein the release handwheel (44) is sleeved around and connected at the joint of the end shaft (41) and the front base (42), wherein the helical spring (43) is disposed between the release handwheel (44) and sleeved on the end shaft (41), and the helical spring (43) extends or is compressed along an axial direction of the end shaft (41) and the release handwheel (44), whereby the end shaft (41) can selectively rotate with respect to the front base (42) via the release handwheel (44).
Dependencies are inferred from the claim text.