Tsubakimoto Chain Company

Hirokazu Tsuneda

Akira Morita

Yuji Kurematsu

Tadashi Murakami

Akihiro Fukuda

Riku Kato

Yuma Ishihara

An object of the present invention is to provide a cam clutch unit that can improve efficiency of torque transmission by improving ease of assembly and processability, while preventing a cam from falling out of a cage ring and preventing damage to a biasing member during assembly. The object is achieved by a cam by being configured to have a head portion and a leg portion that are configured to have respective maximum cross-sectional widths Wa and Wb larger than an opening width Wp of a pocket portion of a cage ring such that at least one of the head portion and the leg portion of the cam is allowed to pass through the pocket portion by rotating the cam while inserting the cam, which is in an inclined attitude, into the pocket portion along an opening direction thereof and thereby elastically deforming the pocket portion.

Cam clutch unit

A cam clutch unit which can receive an axial load in a small space without increasing rigidity of a cage ring or disposing another member is provided. The cam clutch unit includes a plurality of camsand a plurality of rollersdisposed so as to be aligned in a circumferential direction between an inner ring and an outer ring, a cage ringhaving a plurality of pocket portionswhich regulate relative movement in a circumferential direction of the camand the roller, and an annular springwhich urges the cam, in which the rollerhas a part protruding in an axial direction more than the cage ringwhen being held by the cage ring

A cam clutch unit includes a plurality of cams and a plurality of rollers disposed so as to be aligned in a circumferential direction between an inner ring and an outer ring, a cage ring having a plurality of pocket portions which regulate relative movement in a circumferential direction of the cam and the roller, and an annular spring which urges the cam, in which the cam has an engagement stepped portion capable of engagement with the spring, the cage ring has an end-part circumferential annular portion continuing in the circumferential direction on an end surface in the axial direction, the pocket portion regulates movement of the roller to the outer ring side and the inner ring side and has a claw portion capable of insertion of the roller from the outer ring side or the inner ring side by elastic deformation.

In the present invention, a cage ring that holds cams and rollers is configured such that an outer race-side portion of one axial end portion of the rollers is held in a state of protruding radially outward with respect to an outer peripheral surface of the cage ring, roller pocket parts are formed such that both end portions of the rollers are held in a state of respectively protruding axially outward with respect to axial end faces of the cams held by cam pocket parts, and a column part formed between adjacent pocket parts are formed such that an opposite axial end portion on the inner peripheral surface side thereof is located axially inward with respect to an opening edge position on an opposite axial end side of the roller pocket parts.

Cam clutch

To provide a cam clutch unit that is easy to handle before assembly, with its components prevented from lifting or detachment, and that allows production with fewer machining steps and a lower level of difficulty, while also enabling unit thickness reduction. The cam clutch unit of the present invention includes: a plurality of cams arranged between an inner race and an outer race; a cage ring having a plurality of pocket portions that restrict relative circumferential movements of the cams; and an annular spring that biases the cams. The cams have an engagement step adapted to engage with the spring on one axial end face. The cage ring has a plurality of hook portions that restrict an axial movement of the annular spring. The hook portions have a pressing part that allows the spring to press the cams towards the other axial end.

To provide a cam clutch unit that reduces the number of machining steps and level of difficulty of cam clutch production and reduces rotation resistance caused by rollers. The cam clutch unit includes: a plurality of cams and a plurality of rollers circumferentially arranged between an inner race and an outer race that are coaxial and rotatable relative to each other; a cage ring having a plurality of pocket portions that restrict circumferential relative movements of the cams and the rollers; and an annular spring that biases the cams. The cams each have, on one axial end face, an engagement step that can engage with the spring. The cage ring has a plurality of hook portions that restrict axial movements of the annular spring.

Growing community of inventors

Osaka, Japan

Hirokazu Tsuneda