Linear guide device

Patent metadata

Field	Value
Publication number	US-10612591-B2
Application number	US-201615558459-A
Country	US
Kind code	B2
Filing date	Mar 17, 2016
Priority date	Mar 24, 2015
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

To provide a linear guide device having a higher dustproof performance and a dustproof function with a higher degree of freedom. A linear guide device includes a guide rail, a slider, and a rolling element, a seal member which seals a gap formed between a side surface portion of the guide rail and an inner side surface portion of the slider. The seal member includes a first seal member provided at the inner side surface portion of the slider, and a second seal member which is larger in width than the first seal member and is provided in a bottom surface portion of a slider body to be independently detachable from the bottom surface portion, as superimposed on the first seal member.

First claim

The invention claimed is:

1. A linear guide device comprising:
a guide rail; a slider which moves relative to the guide rail; and a rolling element,
the guide rail including a guide rail orbital surface formed in a side surface portion of the guide rail in a longitudinal direction of the guide rail,
the slider including a slider body including a slider orbital surface formed to face the guide rail orbital surface, and a pair of end caps provided at two ends of the slider body in a movement direction, and a retainer that retains the rolling element on a side of the slider orbital surface,
the linear guide device further including a seal member which seals a gap formed between the side surface portion of the guide rail and an inner side surface portion of a bottom side of the slider,
the seal member including a first seal member, and a second seal member which is larger in width than the first seal member and is provided in a bottom surface of the slider to be independently detachable from the bottom surface, and is superimposed on the first seal member, the second seal member sliding in contact with the side surface portion of the guide rail, and
the first seal member being provided in an end portion of the retainer on the bottom side of the slider such that the first seal member is separated from the second seal member in a height direction and the first seal member slides in contact with the side surface portion of the guide rail adjacent to the guide rail orbital surface, in a direction perpendicular to the guide rail orbital surface and obliquely against the side surface portion.

2. The linear guide device according to claim 1 , wherein the second seal member projects more in the longitudinal direction than the first seal member.

3. The linear guide device according to claim 1 , wherein the second seal member is placed on only one bottom surface portion of two bottom surface portions of the slider in a widthwise direction.

4. The linear guide device according to claim 1 , wherein a pair of mount plates respectively connected to two ends of the second seal member are provided at two ends of the slider in the movement direction.

5. The linear guide device according to claim 4 , wherein the second seal member is fastened to a bottom surface portion of the slider body.

6. The linear guide device according to claim 4 , wherein the mount plates are located outside side seals provided on end faces of the slider.

7. The linear guide device according to claim 4 , wherein the mount plates are interposed between the end caps and side seals.

Assignees

• Nsk Ltd

Inventors

• Matsumoto Jun

Classifications

• F16C29/084

  fixed to the carriage or bearing body movable along the guide rail or track · CPC title

• F16J15/002

  comprising at least two sealings in succession (F16J15/162, F16J15/40 take precedence) · CPC title

• F16C29/06 Primary

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

• F16C29/088 Primary

  Seals extending in the longitudinal direction of the carriage or bearing body · CPC title