US 12,215,746 B1Granted

Ratchet type one-way clutch apparatus

AssigneeNSK-Warner K.K.

InventorShoma Ishigami

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Abstract

A ratchet type one-way clutch apparatus in which all pawl members are engageable with tooth portions stably, is provided. The one-way clutch 1 comprises an outer race 2, an inner race 3 and a first to nth pawl members 4a to 4c. A plurality of tooth portions 5 are formed on the outer circumferential surface of the inner race 3, and engageable with the first to nth pawl members 4a to 4c. A first to nth pawl member holding portions 12a to 12c are formed on the inner circumferential surface of the outer race 2 for holding the first to nth pawl members 4a to 4c. Biassing members 15a to 15c are held in the first to nth pawl member holding portions 12a to 12c for urging the first to nth pawl members 4a to 4c. The second to nth pawl member holding portions 12b, 12c are provided at positions deviated by arbitrary angles from positions where the inner circumferential surface of the outer race 2 is divided into n equal parts in the circumferential direction with reference to the position of the first pawl member holding portion 12a, viewed from a central axis O of the outer race 2.

Claims5

Dependent claims

A ratchet type one-way clutch apparatus comprising:

a cylindrical outer race;
a cylindrical inner race arranged radially inside the outer race and rotatably relative to the outer race;
a first to nth pawl members, wherein “n” is an integer not less than 2, disposed on an inner circumference side of the outer race rotatably in the radial direction;
a plurality of tooth portions formed on the outer circumferential surface of the inner race, the tooth portions being engageable with the first to nth pawl members;
a first to nth pawl member holding portions formed on the inner circumferential surface of the outer race for holding the plurality of the pawl members;
biassing members held in the first to nth pawl member holding portions for urging the first to nth pawl members towards the inner race side;
the second to nth pawl member holding portions being provided at positions deviated by arbitrary angles from positions where the inner circumferential surface of the outer race is divided into “n” equal parts in the circumferential direction with the first pawl member holding portion as reference, viewed from a central axis of the outer race.

4 more elements

Dependencies are inferred from the claim text.