Linear actuator using a screw mechanism

Details Linear actuator using a screw mechanism Linear actuator using a screw mechanism

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 25/20 (2006.01)

Patent

CA 2123283

A linear actuator using a screw mechanism is provided which can be made free from play and can operate in a smooth fashion without involving any unacceptably rigorous tolerance control. An external thread of a screw rod is in threading engagement with an internal thread of a nut member for converting a rotational movement of the nut member into a linear movement of the screw rod, and a localized region of relatively tight fit is provided in the threading engagement. In particular, when the nut member is made of a molded plastic member, the localized region of relatively tight fit can be easily formed by grinding or cutting a part of the molding core for molding the internal thread of the nut member.

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