Dust seal for a linear guide apparatus
US4918846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Nov 23, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C29/0642
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dust seal attached to each end of a slider of a linear guide apparatus includes a side seal member which has semicircular seal protrusions protruding inwardly to wipe dust from the ball rolling grooves of a guide rail, formed at both sides thereof. The side seal member has a void portion at a position corresponding to the opening of a bolt inserting hole in the bottom surface of a recessed groove formed in the upper surface of the guide rail to allow dust deposited on the recessed groove to pass through the inside of the slider. The dust seal further includes an axially extending upper seal member made of a spring steel plate attached to the upper inner surface of the slider so as to oppose the upper surface of the guide rail. The upper seal member having a cross section which provides a resilient property, and seal plates secured to the lower surfaces of both sides of wing portions of the upper seal member. The seal plates are resiliently in contact with the flat portions of the ridges at both sides of the recessed groove of the guide rail to prevent the dust on the recessed groove from introduing into the ball rolling grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.