GB994429A - One-way clutch - Google Patents
One-way clutchInfo
- Publication number
- GB994429A GB994429A GB31675/62A GB3167561A GB994429A GB 994429 A GB994429 A GB 994429A GB 31675/62 A GB31675/62 A GB 31675/62A GB 3167561 A GB3167561 A GB 3167561A GB 994429 A GB994429 A GB 994429A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wedges
- race
- wedge
- cam
- grooves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/063—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by moving along the inner and the outer surface without pivoting or rolling, e.g. sliding wedges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D15/00—Clutches with wedging balls or rollers or with other wedgeable separate clutching members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
994,429. Ratchet clutches. ARTHUR D. LITTLE Inc. Sept. 4, 1961 [Sept. 8, 1960; Aug. 9, 1961], No. 31675/61. Heading F2C. A ratchet clutch comprises an inner race and an outer race, defining a space within which gripper means is located, one of the races having a substantially circular surface in contact with a corresponding arcuate surface on the gripper means and the other of said races having a contoured cam surface also in contact with a corresponding surface on the gripper means, and means maintaining the surfaces of the gripper means against the co-operating surfaces of the races, the circulararcuate pairs of engaging surfaces being so formed as to develop a greater frictional force than the cam-container pairs of engaging surfaces. The cam-contoured surfaces may be coated with a material having a low coefficient of friction, such as polytetrafluoroethylene. Alternatively, the frictional force developed between the circular-arcuate engaging surfaces is increased by interengaging wedges and grooves. In one form, wedging shoes 18, Fig. 2, between a cylindrical inner race 16 and a contoured outer race 10, have the friction between the outer race and the shoes reduced by coating the contoured surfaces on the race with an epoxy resin and the co-operating surface 20 of each wedge with polytetrafluoroethylene. The coacting surfaces of the inner race 16 and of the wedging shoes 18, which parts may be made of, e.g. steel, are untreated. The wedges 18 are biased to engage their coacting friction surfaces by, e.g. springs 26 on the wedges engaging shoulders on the cam surfaces. Alternatively, the wedges 18 may be biased towards their engaged positions by spring-biased plungers 30 coacting with cam faces 32 formed on the wedge ends. As a further modification, wedges 24 may bias the wedges 18 into engagement, or the wedges 18 may be mounted on the outer race 10 by wires 28. A small spring 33, which may be of bimetallic construction, carried by each wedge 18, may coact with a film of lubricating oil on the inner race 16 to engage the clutch with falling temperature, corresponding to increasing oil viscosity. To obtain increasing frictional force between the wedges 18 and the race 16, each wedge 36, Fig. 4, may be formed with inclined faces. The number of wedges may be reduced. In one form, only two wedges 35, Fig. 5, co-operate with a shaft 14 and an outer race 10. In this construction, the outer race 10 comprises a disc to which are welded at right angles strips 17. In another form, Fig. 6 (not shown), a single wedge extending over nearly 360 degrees is used. In another modification, Fig. 7 (not shown), a cam surface is formed on an inner race, and the outer race, formed with a groove or grooves, is cylindrical. In one modification, wedges 36, Fig. 8, have truncated grooves for engagement by correspondingly shaped projections on the inner circular race 14. Each wedge may be formed in two parts separated along a plane perpendicular to the main clutch axis, Fig. 9 (not shown), or in four parts, Fig. 10 (not shown). The projections and grooves may be of regular or irregular cross-sectional shape, Figs. 11-13 (not shown), on outer circular surfaces. Oil grooves may be provided on one or other of the races or on the frictional engaging surfaces of the wedges, Figs. 15, 17 (not shown). In another form, wedges 66, Fig. 16, which are cammed outwards by contoured surfaces 65a to engage the cylindrical surface of an outer rate 64, are restrained from increasing the engaging force with increasing speed and centrifugal force by masses 71 pivoting at 72 on the inner race 65 and having pins 74 coacting with the wedges. Thus excessive wear at high speed on the friction surfaces is prevented.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5468360A | 1960-09-08 | 1960-09-08 | |
US130276A US3107764A (en) | 1961-08-09 | 1961-08-09 | One-way clutch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB994429A true GB994429A (en) | 1965-06-10 |
Family
ID=31720001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31675/62A Expired GB994429A (en) | 1960-09-08 | 1961-09-04 | One-way clutch |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB994429A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3541525A1 (en) * | 1985-11-23 | 1987-05-27 | Kloeckner Humboldt Deutz Ag | Free wheel (one-way clutch) |
CN111316010A (en) * | 2017-11-30 | 2020-06-19 | 舍弗勒技术股份两合公司 | Wedge clutch with centrifugal disengagement |
-
1961
- 1961-09-04 GB GB31675/62A patent/GB994429A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3541525A1 (en) * | 1985-11-23 | 1987-05-27 | Kloeckner Humboldt Deutz Ag | Free wheel (one-way clutch) |
CN111316010A (en) * | 2017-11-30 | 2020-06-19 | 舍弗勒技术股份两合公司 | Wedge clutch with centrifugal disengagement |
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