Rolling bearing guide apparatus

Patent metadata

Field	Value
Publication number	US-2016245337-A1
Application number	US-201415030033-A
Country	US
Kind code	A1
Filing date	Oct 31, 2014
Priority date	Nov 6, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

A rolling bearing guide apparatus 1 has a guide rail 2, a slider main body 8, a rolling elements 16, and an end cap 9 a, 9 b that defines a turn passage 15 a, 15 b, 15 c, 15 d that turns the direction of movement of the rolling element 16. The apparatus is provided with a lubrication member 14 impregnated with lubricant, arranged between the slider main body 8 and the end cap 9 a, 9 b, and partly exposed inside the turn passage 15 a, 15 b, 15 c, 15 d, enabling lubrication of the rolling element 16 for a long period of time and reducing efforts of maintenance.

First claim

1 . A rolling bearing guide apparatus comprising:
a guide rail; a slider main body sliding on said guide rail; rolling elements that roll between said slider main body and said guide rail as said slider main body slides; and an end cap attached to an end surface of said slider main body that is located at a front or rear end thereof when said slider main body is sliding, and defining a turn passage that turns the direction of movement of said rolling elements; the rolling bearing guide apparatus being characterized by comprising a lubrication member impregnated with lubricant, arranged between said slider main body and said end cap, and partly exposed inside said turn passage.

2 . A rolling bearing guide apparatus according to claim 1 , characterized in that said lubrication member comprises two leg portions arranged on two sides of said guide rail respectively and a body portion integral with said two leg portions.

3 . A rolling bearing guide apparatus according to claim 1 , characterized in that said lubrication member comprises two leg portions arranged on two opposite sides of said guide rail respectively and a body portion formed as a part separate from said two leg portions and arranged in contact with said two leg portions.

4 . A rolling bearing guide apparatus according to claim 2 , characterized in that the density of said body portion is lower than the density of said leg portions.

5 . A rolling bearing guide apparatus according to claim 1 , characterized in that a lubricant container in which lubricant to be supplied to said lubrication member is stored is attached to said slider main body or said end cap.

6 . A rolling bearing guide apparatus according to claim 5 , characterized in that said lubricant stored in said lubricant container is supplied to said lubrication member utilizing capillary action.

7 . A rolling bearing guide apparatus according to claim 1 , characterized in that said slider main body is provided with a lubricant storing bore in which lubricant is stored, and lubricant is supplied to said lubrication member from said lubricant storing bore.

8 . A rolling bearing guide apparatus according to claim 3 , characterized in that the density of said body portion is lower than the density of said leg portions.

Assignees

• Nsk Ltd

Inventors

• Yamagishi Nobuaki

Classifications

• F16C29/0609 Primary

  of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps · CPC title

• F16C29/0669

  whereby the main body of the U-shaped carriage is an assembly of at least three major parts, e.g. an assembly of a top plate with two separate legs attached thereto in the form of bearing shoes (bearing shoes per se F16C29/0614) · CPC title

• F16C29/0635

  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

• F16C33/6648

  in a porous or resinous body, e.g. a cage impregnated with the liquid · CPC title

• F16C29/0647

  with load directions in X-arrangement · CPC title