Movement guide device

• US 10,082,174 B2
• Filed: 01/15/2016
• Issued: 09/25/2018
• Est. Priority Date: 02/16/2015
• Status: Active Grant

• Current Assignee: THK Company Limited
• Original Assignee: THK Company Limited
• Inventors: Chen, Yu, Wang, Meile, Hikomoto, Kentaro, Guo, Guangming
• Primary Examiner(s): Johnson, Phillip A
• Application Number:
  US15/551,114
• Publication Number:
  US 20180031036A1
• Time in Patent Office: 984 Days
• CPC Class Codes: F16C 2226/76 with tongue and groove or key and slot
• CPC Class Codes: F16C 29/04 Ball or roller bearings
• CPC Class Codes: F16C 29/0607 of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
• CPC Class Codes: F16C 29/0609 of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
• CPC Class Codes: F16C 29/0645 with load directions in O-arrangement
• CPC Class Codes: F16C 33/34 Rollers; Needles

Abstract

A movement guide device comprises: a support body formed with two roller rolling grooves in each of two side surfaces thereof; a moving body assembled onto the support body to freely move along the support body, and having a load roller rolling groove provided opposite to the roller rolling groove to form a load path together with the roller rolling groove; rollers arranged such that lines forming a contact angle with respect to the roller rolling groove intersect at a position outside the support body; and a roller retaining member arranged between two row of rollers, the moving body comprises a main moving body and cover bodies mounted at two ends of the main moving body; in the movement guide device, the roller retaining member comprises a roller retaining portion, formed in a plate shape extending in a length direction of the support body, and orthogonal to the length direction.

Claims

1. A movement guide device, comprising:

a support body formed with two roller rolling grooves in each of two side surfaces thereof;

a moving body assembled to the support body so as to freely move along the support body, and having load roller rolling grooves, each load roller rolling groove being provided opposite to each roller rolling groove so as to form a load path together with each roller rolling groove;

rollers arranged such that lines forming contact angles with respect to the roller rolling grooves intersect at a position outside of the support body; and

a roller retaining member arranged between two rows of the rollers,

wherein the moving body comprises a main moving body and cover bodies mounted at both ends of the main moving body,

wherein the roller retaining member comprises a roller retaining portion, which is formed in a plate shape extending in a length direction of the support body and is orthogonal to the length direction, and

wherein the roller retaining portion retains the two rows of the rollers simultaneously;

wherein the roller retaining member further comprises a fixing portion in additional to the roller retaining portion,

the fixing portion comprises a bent part and a engagement and stop portion, and

the cover body is formed with a receiving groove for receiving the bent part and a engagement and stop groove for receiving the engagement and stop portion.

2. The movement guide device according to claim 1,

wherein the main moving body has an inner wall portion arranged opposite to the roller retaining portion, and

a gap is provided between the roller retaining portion and the inner wall portion.

3. The movement guide device according to claim 2,

wherein the roller retaining portion is formed with a recess in a portion thereof.