WO1996033354A1 - Pinch roll freewheel - Google Patents
Pinch roll freewheel Download PDFInfo
- Publication number
- WO1996033354A1 WO1996033354A1 PCT/EP1996/000821 EP9600821W WO9633354A1 WO 1996033354 A1 WO1996033354 A1 WO 1996033354A1 EP 9600821 W EP9600821 W EP 9600821W WO 9633354 A1 WO9633354 A1 WO 9633354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ring
- clamping
- rings
- roller freewheel
- pinch roller
- Prior art date
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
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
- F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
Definitions
- the present invention relates to a clamping roller freewheel, with two mutually arranged, mutually facing jacket surfaces, with a cylindrical clamping track formed on one jacket surface, with clamping ramps formed on the other jacket surface and arranged in a circumferential direction, and with against the cylindrical clamping track and the clamping ramps sprung clamping rollers.
- Such a freewheel is known for example from DE-PS 40 1 5 790.
- the rings of such freewheels are produced by cutting or non-cutting shaping.
- the rings are hardened so that the freewheel works safely even under heavy loads and without any significant wear.
- the heavy machined rings are often hardened.
- the thin-walled rings produced by non-cutting shaping are only hardened on the outer layer, because in this way the necessary elasticity of the thin-walled rings is retained.
- the rings produced by machining are expensive and heavy; the rings produced without cutting are, on the other hand, cheaper and lighter, but because of the inherent elasticity of the rings, which are only hardened by the outer layer, they can only be subjected to less stress than the rings hardened by machining.
- the invention is therefore based on the object of developing a generic clamping roller freewheel in such a way that it is both inexpensive and of low weight and also has low intrinsic elasticity. According to the invention this object is achieved in that at least one of the
- Rings produced in a forming process without cutting and formed from a hardened steel are produced in a forming process without cutting and formed from a hardened steel.
- the ring provided with the clamping ramps in particular the outer ring, is manufactured and hardened using the deep-drawing process, the ramps being integrally connected to the ring.
- the outer ring according to the invention does not require any external support in the region of the clamping ramps, since its elongations in the circumferential direction under load are small to the desired extent due to its inherent rigidity.
- the outer ring is fully hardened and the inner ring is surface hardened, both rings being produced without cutting in the deep-drawing process.
- Such an arrangement is useful, for example, when the inner ring is, for example, attached to a shaft and is thus supported radially.
- the inner ring is rotatably mounted on a drive shaft of a washing machine, a sun gear of the drive shaft meshing with planet gears, which in turn mesh with a ring gear which is flanged to the radial flange.
- Rolling raceway is formed, can be omitted.
- this arrangement of the rolling element raceway is particularly interesting for the deep-drawing process because the clear diameter of the inner one
- a plain bearing ring is provided on the inside of the inner ring, the use of which enables a simple cylindrical inner contour of the inner ring.
- an annular gap formed between the radial flange and the inner ring is closed by means of a sealing ring, the sealing ring bearing against the end face of the inner ring.
- This arrangement is particularly favorable when the inner ring is arranged on the drive shaft and balls used as rolling elements are inserted between the inner ring and the drive shaft.
- the inner ring is displaced radially with respect to the drive shaft; The balls can now be inserted into the sickle-shaped gap.
- This radial displacement of the inner ring is made possible by the fact that the inner ring is radially displaceable relative to the sealing ring, even if the latter is rigid. With a radial shaft sealing ring, for example, this radial displaceability and thus the assembly described is not possible.
- FIG. 1 shows a half section of a drive train of a washing machine with a clamping roller freewheel according to the invention
- FIG. 3 shows another pinch roller freewheel according to the invention
- the pinch roller freewheel 1 is arranged on a drive shaft 2 of a washing machine, not shown.
- the clamping roller freewheel 1 has an outer ring 3, an inner ring 4 and clamping rollers 5 arranged therebetween, which are pressed into a gap which is formed by a cylindrical clamping track 6 of the inner ring 4 and by clamping ramps 7 of the outer ring 3. Furthermore, balls 8 are arranged between the rings 3, 4, which roll on ball grooves 9, 10 of the two rings 3, 4.
- the pinch roller freewheel 1 is attached with its outer ring 3 to a housing 1 1. Between the pinch roller freewheel 1 and the drive shaft 2, a double-row deep groove ball bearing 12 is provided, which is formed from two races 13, 14 and rows of balls 15 arranged between them.
- the inner ring 4 of the pinch roller freewheel 1 has on its left side a radial flange 16 which is fastened to a ring gear 17 of a planetary gear 18.
- the ring gear 17 is fastened to a hollow shaft 19 which is arranged concentrically with the drive shaft 2 and which is rotatably mounted with respect to the housing 11 with the interposition of a deep groove ball bearing 20.
- the drive shaft 2 has a sun gear 21 of the planetary gear 18, the sun gear 21 meshing with planet gears 22, which in turn are in engagement with the ring gear 17.
- FIG. 2 clearly shows the design of the clamping ramps 7 on the outer ring 3. Furthermore, it can be seen that the clamping rollers 5 are pressed into a gap by means of spring elements 23, which is formed by the cylindrical clamping track 6 and the clamping ramps 7 .
- the pinch rollers 5 and the spring element 23 are arranged in pockets 24 of a pinch roller cage 25.
- Figure 3 shows an enlarged view of the cut and modified
- Pinch roller freewheel 1 from Figure 1, but in a modified design.
- the arrangement of the balls 8 and the pinch rollers 5 is only exchanged axially.
- the inner ring 4 additionally has at its end facing the radial flange 16 on the inner circumferential surface a ball groove 26 for balls 27 rolling thereon.
- An opposing track 28 for the balls 27 is formed on a sleeve 30 provided with a radial rim 29, the balls 27 rolling on the outer surface of the sleeve 30 and the radial rim 29.
- This arrangement has the advantage that, for example, the inner ring 4 can be moved axially in the direction of the balls 27 until the balls 27 abut the ball groove 26. This arrangement is also particularly advantageous for the deep-drawing process for manufacturing reasons.
- the clear diameter of the inner ring 4 is only larger in one axial direction and only smaller in the other direction. Because no undercuts can occur here, the inner ring 4 can be produced in a particularly favorable manner using the deep-drawing process.
- the outer ring 3 is made of a hardenable steel in the deep-drawing process, the clamping ramps 7 getting their final shape in the deep-drawing process.
- the ball groove 9 is produced in a rolling process. After the steel has hardened through, punctures for the arrangement of seals 31 are possibly formed in a cutting manner, the ball groove 9 possibly being reground. Due to its high inherent stiffness, expansions of the loaded outer ring 3 are so small that no additional components are required to stiffen it.
- a sealing ring 32 can also be provided, which closes an annular gap 34 formed between the radial flange 16 and an end face 33 of the outer ring 3; the sealing ring 32 is rotatable with respect to the outer ring 3. Furthermore, a slide bearing ring 35 is arranged on the inside of the inner ring 4, via which the inner ring 4 is rotatably mounted with respect to the drive shaft, not shown.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Friction Gearing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19680243D DE19680243D2 (en) | 1995-04-19 | 1996-02-29 | Pinch roller freewheel |
DE19680243A DE19680243C1 (en) | 1995-04-19 | 1996-02-29 | Clamping roller freewheel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19514506.2 | 1995-04-19 | ||
DE19514506A DE19514506A1 (en) | 1995-04-19 | 1995-04-19 | Pinch roller freewheel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996033354A1 true WO1996033354A1 (en) | 1996-10-24 |
Family
ID=7759926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/000821 WO1996033354A1 (en) | 1995-04-19 | 1996-02-29 | Pinch roll freewheel |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR19980703723A (en) |
CN (1) | CN1182472A (en) |
DE (2) | DE19514506A1 (en) |
WO (1) | WO1996033354A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1275868A1 (en) * | 2001-07-13 | 2003-01-15 | Koyo Seiko Co., Ltd. | One-way clutch unit |
DE202015101730U1 (en) | 2015-04-09 | 2015-04-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Clamping roller freewheel |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19644045C2 (en) * | 1996-10-31 | 2002-04-18 | Ina Schaeffler Kg | freewheel |
DE19812253A1 (en) * | 1998-03-20 | 1999-10-07 | Schaeffler Waelzlager Ohg | Roller bearing combined with free-run coupling, particularly radially grooved ball bearing |
DE19952120A1 (en) * | 1999-10-29 | 2001-05-03 | Schaeffler Waelzlager Ohg | Combined axial/radial ball bearing for mounting spindles in machine tools has axial cage with seatings for balls and radial races containing second set of balls, axial cage having plate with seatings which have tapering edges |
DE10159440A1 (en) * | 2001-12-04 | 2003-06-12 | Ina Schaeffler Kg | Freewheel clutch, for a vehicle automatic drive transmission train, has outer and inner sections with clamping gaps between them mounted on an angular roller bearing on one side and a sliding bearing ring on the other side |
DE20305473U1 (en) | 2003-04-03 | 2003-06-12 | Novopress GmbH Pressen und Presswerkzeuge & Co. KG, 41460 Neuss | Hand-driven press has a driver and a motor with a linear guide and linear drive |
JP5153269B2 (en) * | 2007-09-05 | 2013-02-27 | 株式会社シマノ | Roller clutch |
DE102008021960A1 (en) * | 2008-05-02 | 2009-11-05 | Schaeffler Kg | Free-wheel e.g. directional clutch, for use in machine construction, has free-wheel cage arranged between outer ring and inner ring, where outer ring is formed by self-supporting angle flange that is designed as cold-transformed component |
DE102011082951A1 (en) * | 2011-09-19 | 2013-03-21 | Schaeffler Technologies AG & Co. KG | Freewheel support bearing assembly for a machine element |
DE102014200477A1 (en) | 2014-01-14 | 2015-07-16 | Schaeffler Technologies AG & Co. KG | Fine stamped ring element for a freewheel |
DE102016218929A1 (en) * | 2016-09-29 | 2018-03-29 | Schaeffler Technologies AG & Co. KG | Sleeve freewheel with torque limiter for two-wheel starter applications |
EP3627003A1 (en) | 2018-09-20 | 2020-03-25 | Rolls-Royce Deutschland Ltd & Co KG | Epicyclic gear system and gas turbine engine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2051308A1 (en) * | 1970-10-20 | 1972-04-27 | Schaeffler Ohg Industriewerk | Pinch roller freewheel clutch |
JPS59217019A (en) * | 1983-05-19 | 1984-12-07 | Nippon Denso Co Ltd | Clutch for starter |
JPS61109926A (en) * | 1984-11-02 | 1986-05-28 | Yamaha Motor Co Ltd | One way clutch |
US4878570A (en) * | 1988-01-25 | 1989-11-07 | Dana Corporation | Surface hardened sprags and rollers |
EP0521270A1 (en) * | 1991-06-27 | 1993-01-07 | Ford-Werke Aktiengesellschaft | Four speed ratio transaxle having disengageable overrunning brake for reverse drive gearset reaction |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3184020A (en) * | 1962-03-01 | 1965-05-18 | Torrington Co | Overrunning clutch and cage therefor |
DE1750493A1 (en) * | 1966-03-24 | 1972-04-06 | Torrington Co | Method for producing a one-way clutch |
DE1625743A1 (en) * | 1967-09-27 | 1972-04-06 | Schaeffler Ohg Industriewerk | Pinch roller overrunning clutch |
DE6941547U (en) * | 1969-10-25 | 1971-04-08 | Schaeffler Ohg Industriewerk | FREE WHEEL CLUTCH. |
US3737015A (en) * | 1972-05-24 | 1973-06-05 | Gen Motors Corp | Spring mounting arrangement for one-way roller clutch |
DE2301209A1 (en) * | 1973-01-11 | 1974-07-18 | Torrington Gmbh | SLEEVE FOR A CLAMPING ROLLER FREE-WHEEL CLUTCH |
US3937311A (en) * | 1974-05-20 | 1976-02-10 | The Torrington Company | Overrunning clutch |
JPH02309021A (en) * | 1989-05-19 | 1990-12-25 | Ntn Corp | Consolidated assembly of one-way clutch/bearing |
JP2807722B2 (en) * | 1990-08-03 | 1998-10-08 | 光洋精工株式会社 | One-way clutch |
DE4216055C2 (en) * | 1992-05-15 | 1997-12-18 | Schaeffler Waelzlager Kg | Sleeve freewheel with storage |
-
1995
- 1995-04-19 DE DE19514506A patent/DE19514506A1/en not_active Withdrawn
-
1996
- 1996-02-29 KR KR1019970707123A patent/KR19980703723A/en not_active Application Discontinuation
- 1996-02-29 DE DE19680243A patent/DE19680243C1/en not_active Expired - Fee Related
- 1996-02-29 CN CN96193380A patent/CN1182472A/en active Pending
- 1996-02-29 WO PCT/EP1996/000821 patent/WO1996033354A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2051308A1 (en) * | 1970-10-20 | 1972-04-27 | Schaeffler Ohg Industriewerk | Pinch roller freewheel clutch |
JPS59217019A (en) * | 1983-05-19 | 1984-12-07 | Nippon Denso Co Ltd | Clutch for starter |
JPS61109926A (en) * | 1984-11-02 | 1986-05-28 | Yamaha Motor Co Ltd | One way clutch |
US4878570A (en) * | 1988-01-25 | 1989-11-07 | Dana Corporation | Surface hardened sprags and rollers |
EP0521270A1 (en) * | 1991-06-27 | 1993-01-07 | Ford-Werke Aktiengesellschaft | Four speed ratio transaxle having disengageable overrunning brake for reverse drive gearset reaction |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 10, no. 295 (M - 523)<2351> 7 October 1986 (1986-10-07) * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 92 (M - 373)<1815> 20 April 1985 (1985-04-20) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1275868A1 (en) * | 2001-07-13 | 2003-01-15 | Koyo Seiko Co., Ltd. | One-way clutch unit |
US6705444B2 (en) | 2001-07-13 | 2004-03-16 | Koyo Seiko Co., Ltd. | One-way clutch unit |
KR100502738B1 (en) * | 2001-07-13 | 2005-07-20 | 고요 세이코 가부시키가이샤 | One-way clutch unit |
DE202015101730U1 (en) | 2015-04-09 | 2015-04-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Clamping roller freewheel |
WO2016162411A1 (en) | 2015-04-09 | 2016-10-13 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | One-way roller clutch |
US10941820B2 (en) | 2015-04-09 | 2021-03-09 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | One-way roller clutch |
Also Published As
Publication number | Publication date |
---|---|
CN1182472A (en) | 1998-05-20 |
KR19980703723A (en) | 1998-12-05 |
DE19680243C1 (en) | 2002-04-11 |
DE19514506A1 (en) | 1996-10-24 |
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