Linear motion rolling guide unit
US5927858A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Apr 1, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/2238
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In this linear motion rolling guide unit, separators of different thicknesses are interposed between adjacent rolling elements so that the rolling elements are arranged in an unequally spaced manner, whereby the vibrations and noises, which are ascribed to regular rolling of the rolling elements, are minimized, the early wear in a casing and end caps being thereby prevented. The rolling elements roll in rolling element circulating passages comprising raceways formed between raceway surfaces of a track rail and the casing, direction changing passages formed in the end caps, and return passages formed in the casing. Among the rolling elements, separators 30 formed to unequal thickness are provided. When an excessively large load is imparted to the rolling elements, impressions occurs at irregular intervals in the raceway surfaces, so that the rolling elements do not simultaneously fit in the irregularly spaced impressions while the slider is moved. Therefore, the vibrations and noises due to the rolling of the rolling elements and the early wear in the casing and end caps decrease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.