Actuator

Patent metadata

Field	Value
Publication number	US-2016116033-A1
Application number	US-201414895973-A
Country	US
Kind code	A1
Filing date	May 26, 2014
Priority date	Jun 7, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

To provide an actuator with which side face covers can be easily attached and detached without damaging a top face cover, and workability is enhanced, and cost can be reduced without upsizing the actuator, by fastening and fixing the actuator to a base stand from above the actuator in a state in which the side face covers are removed.
In an actuator having a long screw shaft with a first roller rolling groove in a spiral shape formed on an outer periphery, an inner block where a screw hole through which the screw shaft penetrates is formed, and which has a second roller rolling groove that is formed on an outer periphery to be parallel with the screw shaft, an outer rail that faces the second roller rolling groove, and a plurality of rollers that are respectively arranged between the screw shaft and the inner block, and between the inner block and the outer rail, side face covers that are laid between a pair of end portion members that are installed at both end portions of the screw shaft, and a top face cover that is disposed to close an opening portion that is formed between the side face covers and is opened parallel with the screw shaft are included, the side face covers each includes a top plate that is formed to be parallel with the top face cover, and a side plate that hangs from one end of the top plate, and the end portion members each has posture retaining device that contacts a corner portion of the top plate and the side plate.

First claim

1 . An actuator having
a long screw shaft with a first roller rolling groove in a spiral shape formed on an outer periphery, an inner block where a screw hole through which the screw shaft penetrates is formed, and which has a second roller rolling groove that is formed on an outer periphery to be parallel with the screw shaft, an outer rail that faces the second roller rolling groove, and a plurality of rollers that are respectively arranged between the screw shaft and the inner block, and between the inner block and the outer rail, comprising: a pair of side face covers that are laid between a pair of end portion members that are installed at both end portions of the screw shaft; and a top face cover that is disposed to close an opening portion that is formed between the side face covers, and is opened parallel with the screw shaft, wherein the side face covers each includes a top plate that is formed to be parallel with the top face cover, and a side plate that hangs from one end along a width direction of the top plate, and the end portion members each has a posture retaining device that contacts a corner portion where the top plate and the side plate of the side face cover connect to each other, and the posture retaining device allows the side plate to rotate around a rotation axis parallel with the screw shaft with one end of the top plate as a base point, at a time of attaching and detaching the side face cover.

2 . (canceled)

3 . The actuator according to claim 1 ,
wherein the side face cover is provided to extend parallel with the screw shaft, and is fixed to the outer rail.

Assignees

• Thk Co Ltd

Inventors

• Yamakura Wataru
• Kono Takaya
• AKIYOSHI Mitsuru

Classifications

• F16H25/2204 Primary

  with balls · CPC title

• F16C29/06

  in which the rolling bodies circulate partly without carrying load · CPC title

• F16C29/08

  Arrangements for covering or protecting the ways {(protective coverings for parts of machine tools B23Q11/08)} · CPC title

• F16C29/0602

  Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly · CPC title

• F16C29/082

  fixed to the way · CPC title