Anti-jam structure for linear actuator
AssigneeTricore Corporation
InventorPing-Ju HSIEH
Life of this patent
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Abstract
An anti-jam structure for linear actuator includes a screw nut including a screw rod passage defining an internal thread segment and a threadless segment and one or multiple elongated slots longitudinally extended from one end thereof corresponding to the threadless segment and in communication between the screw rod passage and the atmosphere, a cover member mounted on the outside of the screw nut to block the elongated slots, and a magnet holder defining therein an accommodation chamber that accommodates the screw nut and the cover member. Thus, during operation of the linear actuator, the elongated slots enable the screw nut to be elastically compressed, reducing the risk of screw rod jam due to bearing of a load or high vibrations.
Claims8
An anti-jam structure used in a linear motor, comprising:
- a screw nut comprising a screw rod passage extending through two opposite ends thereof, said screw rod passage defining an internal thread segment and a threadless segment axially aligned in line, and at least one elongated slot longitudinally extended from one end thereof corresponding to said threadless segment and disposed in communication between said screw rod passage and outside;
- a cover member mounted on said screw nut to block said elongated slot;
- and
- a magnet holder defining therein an accommodation chamber that accommodates said screw nut and said cover member.
Dependencies are inferred from the claim text.