Invention Grant
- Patent Title: Electric linear actuator
- Patent Title (中): 电动线性执行器
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Application No.: US14461367Application Date: 2014-08-16
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Publication No.: US09574648B2Publication Date: 2017-02-21
- Inventor: Yoshinori Ikeda , Kensuke Funada
- Applicant: NTN Corporation
- Applicant Address: JP Osaka-shi
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka-shi
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2012-032234 20120217
- Main IPC: F16H25/24
- IPC: F16H25/24 ; F16H25/22 ; H02K7/06 ; F16H25/20 ; F16B21/18

Abstract:
An electric linear actuator has a cylindrical housing, an electric motor, a speed reduction mechanism, and a ball screw mechanism. The ball screw mechanism has a nut and a screw shaft coaxially integrated with the drive shaft. The housing has receiving bores to receive the screw shaft. A cylindrical sleeve is securely press-fit into the receiving bore of the housing. The sleeve has one pair of axially extending recessed grooves formed on its inner circumference at diametrically opposed positions. A guide pin, mounted on the end of the screw shaft, engages the recessed grooves. An annular groove is formed near an opening of the receiving bore of the housing. The sleeve is held in the receiving bore by a stopper ring snapped into the annular groove.
Public/Granted literature
- US20140352466A1 Electric Linear Actuator Public/Granted day:2014-12-04
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