Oil supply device and linear motion guide device

Patent metadata

Field	Value
Publication number	US-10107336-B2
Application number	US-201615560250-A
Country	US
Kind code	B2
Filing date	Mar 30, 2016
Priority date	Mar 31, 2015
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

An oil supply device provided on a slider main body of a linear motion guide device includes: a storing member; an applicator; and a container. In the container, a storing member accommodation portion and an applicator accommodation portion are provided to be arranged in an up-down direction. A communication hole for guiding the lubricant from the storing member accommodation portion to the applicator accommodation portion is formed in the up-down direction in a partition portion which partitions the applicator accommodation portion and the storing member accommodation portion. The communication hole includes a small diameter portion which is positioned on the applicator accommodation portion side and a large diameter portion which is positioned on the storing member accommodation portion side. The storing member includes a protrusion portion capable of fitting into the large diameter portion.

First claim

The invention claimed is:

1. An oil supply device comprising:
a storing member which holds a lubricant;
an applicator for applying the lubricant to a guide rail; and
a container which accommodates the applicator and the storing member and is installed on an end portion in a longitudinal direction of a slider,
wherein in the container, a storing member accommodation portion which accommodates the storing member and an applicator accommodation portion which accommodates the applicator are provided to be arranged in an up-down direction and a communication hole for guiding the lubricant from the storing member accommodation portion to the applicator accommodation portion is formed in a partition portion which partitions the applicator accommodation portion and the storing member accommodation portion,
wherein the communication hole includes a small diameter portion which is positioned on the applicator accommodation portion side and a large diameter portion which is positioned on the storing member accommodation portion side and is larger than the small diameter portion, and
wherein the storing member is provided with a protrusion portion which is capable of fitting into the large diameter portion.

2. The oil supply device according to claim 1 ,
wherein the applicator includes a porous formed body, and
wherein the storing member includes a porous formed body having a greater per-unit-volume amount of holding the lubricant than that of the applicator.

3. The oil supply device according to claim 1 ,
wherein the storing member accommodation portion has a deeper bottom and a greater capacity than those of the applicator accommodation portion.

4. The oil supply device according to claim 1 ,
wherein in the applicator accommodation portion, a portion facing the guide rail is open and a support portion for supporting the applicator while positioning the applicator in the up-down direction is provided.

5. The oil supply device according to claim 1 , further comprising:
a pressing member which presses the storing member which is accommodated in the storing member accommodation portion.

6. The oil supply device according to claim 1 ,
wherein the applicator and the storing member contact each other inside the communication hole or in a vicinity of the communication hole.

7. A linear motion guide device, comprising:
a guide rail;
a slider; and
rolling elements,
wherein the guide rail and the slider include respective rolling surfaces in positions facing each other, the rolling surfaces forming a rolling path of the rolling elements,
wherein the rolling surfaces extend in a longitudinal direction of the guide rail,
wherein the rolling elements are disposed in the rolling path,
wherein the slider straddles on the guide rail via the rolling elements to be capable of moving along the longitudinal direction and is provided with a slider main body and an end cap on at least one of both end surfaces of the slider main body in a movement direction,
wherein the oil supply device according to claim 1 is provided on at least one of both end surfaces of the slider in the movement direction.

Assignees

• Nsk Ltd

Inventors

• Yamagishi Nobuaki

Classifications

• F16C29/065

  with rollers · CPC title

• F16C29/0635 Primary

  whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end · CPC title

• F16C33/6659 Primary

  Details of supply of the liquid to the bearing, e.g. passages or nozzles · CPC title

• F16C29/0638

  with balls · CPC title

• F16C33/664

  Retaining the liquid in or near the bearing · CPC title