Patent ID: 11905990
Assignee: THK CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A motion guiding device comprising a supporting body and a moving body, wherein the supporting body comprises rolling element rolling grooves formed on left and right side surfaces in a longitudinal direction, and the moving body is relatively movably assembled to the supporting body via a plurality of rolling elements,
the moving body comprises: a moving body main body, a cover body fixed to front and rear end surfaces of the moving body main body; and a circulation component provided between the moving body main body and the cover body, wherein on each of left and right sides in the longitudinal direction, the moving body main body is provided with a loaded rolling element rolling groove and a non-loaded passage, the loaded rolling element rolling groove is arranged opposite to the rolling element rolling groove so as to form a loaded rolling path, and the non-loaded passage is formed in parallel with the loaded rolling path,
the motion guiding device is provided with a direction change path for connecting the loaded rolling path and the non-loaded passage so as to change a direction of the rolling elements, the cover body is provided with an outer peripheral side direction change portion of the direction change path, and the circulation component is provided with an inner peripheral side direction change portion of the direction change path,
the circulation component comprises a connecting portion for connecting inner peripheral side direction change portions positioned on left and right sides of the supporting body, the cover body comprises a fitting recess portion for accommodating the connecting portion, and a first lubrication groove is formed in the fitting recess portion,
when a lubricating grease is used as a lubricant, the lubricant is supplied by a lubricating grease lubrication path formed by the first lubrication groove and the circulation component,
when a lubricating oil is used as a lubricant, the motion guiding device further comprises a lubrication path component, the lubrication path component comprising a second lubrication groove having a cross-sectional area less than that of the first lubrication groove, the lubrication path component comprises a fitting portion fitting the first lubrication groove and an insertion portion insertable into the circulation component, and by inserting the insertion portion into the circulation component and fitting the fitting portion into the first lubrication groove, the lubricant is supplied by a lubricating oil lubrication path formed by the first lubrication groove and the second lubrication groove.