Honda Giken Kogyo Kabushiki Kaisha

Fujiunivance Corporation

Kyushu Mushashi Seimitsu Kabushiki Kaisha

Masatoshi Akagi

Naoto Sato

Takashi Ishizaka

Wasaku Hosoda

Tadashi Miyamoto

Naoto Oono

Kiyotaka Fukui

Toshio Kimura

A one-way clutch includes an inner race, an outer race driven in a specific direction and provided with a plurality of pockets in its inner circumference facing the outer circumference of the inner race and threaded attachment holes to be used for attaching a driven member to the outer race, rollers respectively placed in the plurality of pockets, and elastic members pressing the rollers in a specific direction. A center angular interval between the middle pocket in any three successive ones of the pockets and the adjacent pocket on the forward side of the middle pocket, and an center angular interval between the middle pocket and the adjacent pocket on the backward side of the middle pocket are different from each other. Thus the distance between the front end surface of the pocket and the threaded attachment hole on the forward side of the pocket can be sufficiently large, and reduction of the rigidity of the outer race can be prevented without increasing the diameter of the outer race. The springs may be flat coil springs of a cross section having longer sides parallel to the longitudinal axis of the rollers, and a U-shaped spring caps each having a pair of side walls may be put on end on the side of the rollers of the springs, respectively.

One-way clutch

When an assembly in which a sprag is temporarily assembled to a retainer by a return spring is assembled between an outer race and an inner race, even if the sprag projecting from the retainer is depressed, a drop-out of the sprag is prevented by a retaining member of a friction plate fixed to the end portion of the retainer. A lubrication passage is formed by opening a space surrounded by the outer race, retainer, and sprag to the outer peripheral side. An attaching member of the friction plate which is fixed to the retainer by a spot welding is recessed backward by joggling in a downward stairway manner for a contact surface. Therefore, even if a rise occurs in the attaching member by the welding, the rise is not come into contact with the contact surface. A corner edge is formed in a spherical shape in a manner such that when the corner edge of each of the frictional members divisionally formed on the outer periphery of the friction plate is dropped into a rivet hole of the attaching surface and, when it comes out from the rivet hole, the corner edge does not thrust into the periphery of the hole.

A one-way clutch having a number of cams arranged circumferentially between an outer clutch member and an inner clutch member and held between a pair of ring-shaped side plates. A friction member is interposed between one of the clutch members and at least one of the side plates to prevent mutual sliding rotation thereof. The friction member having resiliency is pressed against one of the clutch member to produce intensive frictional force, so that the one-way clutch rotates together with one of the clutch members at all times, thereby wearing of the one-way clutch can be avoided.

Growing community of inventors

Saitama, Japan

Masatoshi Akagi