Ribbon spring for sprag-type one-way clutch, and sprag-type one-way clutch

A technology of one-way clutches and wedges, applied in one-way clutches, clutches, gear transmission mechanisms, etc., can solve problems such as abnormal friction, wedge application, peeling, etc., and achieve reliable functions and smooth sliding effects
CN106687705AInactive Publication Date: 2017-05-17NTN CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NTN CORP
Publication Date
2017-05-17
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

This invention makes it possible to obtain smooth sliding properties at the contact parts of sprags and tongue parts, which bias the sprags in the direction of engagement, in a sprag-type one-way clutch. A plurality of pockets (52) are formed, at intervals in the length direction of an elongated belt-shaped plate part (51) formed from sheet metal, by punching, which is a type of shearing processing, and tongue parts (54) that protrude inside the pockets (52) are provided on one side of pillar parts (53) formed between adjacent pockets (52) in the peripheral direction. The belt-shaped plate part (51) is bent into a circular shape and installed between an outer ring (10) and an inner ring (20), and the sprags (30), which are respectively inserted into the pockets (52), are biased in the engagement direction by the tongue parts (54). The sliding properties are improved by bending the belt-shaped plate part (51) such that a shear drop (58) formed on the cut edge surface of the sheared edge of the tongue part (54) is on the outer diameter side, and bringing the shear drop (58) into contact with the sprag (30).
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Description

technical field

[0001] The present invention relates to a band spring of a sprag-type one-way clutch used in a torque converter of an automobile, etc., and a sprag-type one-way clutch using the band spring. Background technique

[0002] Such a sprag-type one-way clutch is described, for example, in the following Patent Documents 1 to 3. A plurality of sprags are assembled between the outer ring and the inner ring, and the sprags are passed through an outer cage assembled between the outer ring and the inner ring. And the inner cage is held, through the band spring assembled between the two cages, a plurality of wedges are respectively directed to the outer ring side cam surface and the inner ring side cam surface and the inner diameter surface of the outer ring and the outer ring outer surface of the inner ring. Push in the direction of radial surface contact.

[0003] Here, in the strip spring, a plurality of pockets are punched out at intervals in the longitudinal directi...

Claims

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