Patent ID: 7771119
Filing Date: 2010-08-10
Classification: F16C

Abstract:
1. A linear guide apparatus comprising: a guide rail comprising a rail-side rolling element raceway groove which is formed thereon so as to extend along an axial direction of the guide rail; a slider main body comprising a slider-side rolling element raceway groove which faces the rail-side rolling element raceway groove; a plurality of rolling elements provided within a rolling element rolling path which is made up of the rail-side rolling element raceway groove and the slider-side rolling element raceway groove so that the slider main body is movably supported on the guide rail; a rolling element return path provided within the slider main body so as to extend parallel to the rolling element rolling path; end caps mounted, respectively, on both end faces of the slider main body in moving direction of the slider main body; direction turning paths formed by inner circumferential guide members which are disposed to be fixed, respectively, to the end faces of the slider main body so as to establish a communication between the rolling element rolling path and the rolling element return path; and inclined portions provided at both end portions of the slider-side rolling element raceway groove, wherein the inclined portions are each comprises: in a section taken along a direction in which the inclined portions and the rolling elements are brought into contact with each other, an intersection point between an imaginary line extending linearly along the second crowning and a linear imaginary line extending along the end face of the slider main body substantially coincides with an intersection point between an imaginary line extending in an arc-like fashion along an outer circumference of the inner circumferential guide member which makes up an inner circumferential surface of the direction turning path and the linear imaginary line extending along the end face of the slider main body.