公开(公告)号：US09903452B2

公开(公告)日：2018-02-27

申请号：US14882029

申请日：2015-10-13

Applicant: MOTECK ELECTRIC CORP.

Inventor： Hsien-Te Tseng

IPC: F16H25/00 ,  F16H25/24 ,  F16C19/30 ,  F16H25/20 ,  F16C35/077 ,  F16C19/32 ,  F16C19/49

CPC classification number: F16H25/2454 ,  F16C19/305 ,  F16C19/32 ,  F16C19/49 ,  F16C19/545 ,  F16C35/077 ,  F16H2025/2031 ,  F16H2025/204 ,  F16H2025/209

Abstract: An improved structure of linear actuator includes an actuator including a gear set having a friction portion located at the periphery of the gear shaft of a driven gear thereof, a one-way bearing mounted on the gear shaft for rubbing against the friction portion to brake the driven gear from reverse rotation, a driver for driving the gear set and a transmission mechanism including a lead screw coaxially coupled to and rotatable by the gear shaft of the driven gear and a retractable tube assembly coupled to the lead screw and movable by the lead screw between an extended position and a received position, and a stopping mechanism including a thrust bearing coupled to the gear shaft of the driven gear and stoppable against an inner race of the one-way bearing inner race to bear an axial thrust load.

公开(公告)号：US09797491B2

公开(公告)日：2017-10-24

申请号：US14682575

申请日：2015-04-09

Applicant: MOTECK ELECTRIC CORP.

Inventor： Hsien-Te Tseng

IPC: F16H25/24 ,  B60T17/22 ,  F16H25/20

CPC classification number: F16H25/2454 ,  B60T17/22 ,  F16H2025/2046 ,  F16H2025/2084 ,  F16H2025/209 ,  Y10T74/18704

Abstract: An electric actuator assembly comprises a main actuator including a gear set containing a stepped friction portion located on a gear shaft of a drive gear thereof, an extension rod, and a power drive for rotating the gear set to move the extension rod through a lead screw, and a one-way bearing consisting of an inner race fitted to the gear shaft of the drive gear, an outer race surrounding the inner race, and a backstop mechanism mounted in between. When operating the power drive to rotate the gear set in lifting the extension rod, the inner race is rotated by the gear set relative to the outer race in one direction. When the driving power is off, the one-way bearing cannot rotate in reverse direction, the stepped friction portion is abutted against the flat contact surface of the inner race to produce a braking effect, preventing falling of the load that is supported on the main actuator.