Cam clutch unit
AssigneeTsubakimoto Chain Co.
InventorHirokazu Tsuneda
Life of this patent
Estimating the term…
Abstract
A cam clutch unit includes a plurality of cams and rollers. The rollers each include an axially extending shaft portion and a pair of large-diameter portions continuous with respective both ends of the shaft portion. The space between the pair of large-diameter portions forms a groove for an annular spring to fit in. The shaft portion forming the bottom surface of the groove has an outer circumferential surface that allows the spring to contact the groove at a central position in an axial direction of the groove. The outer circumferential surface is a curved surface so that the shaft portion increases in outside diameter monotonically from the central position in the axial direction of the groove towards the large-diameter portions.
Claims7
A cam clutch unit comprising:
- a plurality of cams and a plurality of rollers arranged between an inner race and an outer race that are coaxial and rotatable relative to each other;
- and
- an annular spring fitted in a groove formed in each of the cams and the rollers, and biasing the cams to make contact with the inner race and the outer race,
- the rollers each including an axially extending shaft portion and a pair of large-diameter portions respectively continuous with both ends of the shaft portion, the groove being formed by a space between the pair of large-diameter portions, and the shaft portion being configured to contact the annular spring to receive a biasing force from the annular spring,
- the annular groove is formed such that a clearance allowing axial displacement of the annular spring is provided between the annular spring and the large-diameter portions,
- the shaft portion forming a bottom surface of the groove has an outer circumferential surface that allows the annular spring to contact the groove at a central position in an axial direction of the groove, the outer circumferential surface being a curved surface so that the shaft portion increases in outside diameter monotonically from the central position in the axial direction of the groove towards the large-diameter portions.
Dependencies are inferred from the claim text.