WO2005113998A2 - Clutch release bearing assembly with concentric slave cylinders - Google Patents
Clutch release bearing assembly with concentric slave cylinders Download PDFInfo
- Publication number
- WO2005113998A2 WO2005113998A2 PCT/IB2005/001476 IB2005001476W WO2005113998A2 WO 2005113998 A2 WO2005113998 A2 WO 2005113998A2 IB 2005001476 W IB2005001476 W IB 2005001476W WO 2005113998 A2 WO2005113998 A2 WO 2005113998A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- csc
- release bearing
- piston
- bearing
- clutch
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
- F16D23/148—Guide-sleeve receiving the clutch release bearing
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/083—Actuators therefor
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/087—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation the clutch being actuated by the fluid-actuated member via a diaphragm spring or an equivalent array of levers
Definitions
- This invention relates to so-called concentric slave cylinders (CSCs), hereinafter referred to as being of the type described, in which an annular piston moves in an annular bore in an annular body which surrounds a gearbox input shaft, the piston carrying a clutch release bearing for the operation of an associated vehicle drive clutch.
- CSCs concentric slave cylinders
- a compression spring acts between the body and the release bearing to apply a constant load on an associated clutch release mechanism (e.g. the conventional diaphragm spring fingers) when the CSC is deactivated and the clutch is engaged.
- This compression spring can also be housed within the body of the CSC.
- Such an arrangement allows the diameter of the body (and hence the piston) to be as large as possible within the available space envelope in the engine compartment of the vehicle. This gives larger available clutch actuation force, makes the piston (and hence the release bearing) more stable and less likely to be displaced relative to the body of the CSC and provides more clearance for the passage of the gearbox input shaft through the CSC.
- a gearbox input shaft seal can also be carried by the body of the CSC.
- the outer periphery of the piston preferably encircles the outer periphery of the release bearing so that the bearing can move laterally relative to the piston to provide self-centring of the release bearing. Also the bearing is well protected from the ingress of dirt etc. since it is radially within the body and no additional sealing bellows is required.
- the body also preferably includes mounting lugs through which mounting bolts or other fasteners can be inserted to fasten the CSC in its operational position on the vehicle.
- Figure 1 shows a perspective view of a CSC in accordance with the present invention
- Figure 2 shows an axial section through figure 1 with the CSC in the fully retracted position
- Figure 3 shows an axial section with the CSC in the fully extended position
- Figure 4 shows , on a larger scale, details of the manner in which the release bearing is held in place in the body of the CSC.
- the CSC 10 comprises an annular plastics piston 11 slideable in an annular bore 12 formed in an annular plastics body 13. Piston 1 is sealed to body 13 by an annular seal 14. Body 13 is provided with three mounting lugs 15 (two of which are visible in figure 1) having bores 16 through which mounting bolts or other fasteners (not shown) may be inserted for attaching the CSC to the associated vehicle. An inlet 17 is also moulded into body 13 through which pressurised fluid is introduced into the CSC, inlet 17 communicating with the right hand closed end of bore 12. Piston 11 is provided with an outer peripheral flange 18 inside which a release bearing 19 is located (see Figure 4).
- Release bearing 19 is held within the peripheral flange 18 by a spring washer 20 which grips the inside of the flange 18 and acts against a friction ring 20a which is attached to an outer race 19b of the release bearing.
- a small radial clearance "x" is provided within flange 18 to allow lateral movement of the release bearing relative to the piston in order that the release bearing can align itself with the rotation axis X-X of the associated vehicle drive clutch by sliding between friction ring 20a and spring washer 20.
- the inner race 19a of release bearing 19 contacts the release fingers 21 of a diaphragm spring of the associated vehicle clutch in a conventional manner. This is shown diagrammatically in figures 2 and 3.
- a compression spring 22 acts between the body 13 and the outer race 19b of the release bearing to maintain a constant load on the release fingers 21 when the clutch is engaged and the CSC is in the fully retracted position as shown in figure 2.
- a gearbox input shaft seal 23 is also housed in a recess 24 in the body 13.
- the piston is retained in the bore 12 by one or more stops 25 which are ultrasonically welded but otherwise fixed in cut-outs 26 in the free end of the outer wall of body 13.
- This stop arrangement prevents the piston disengaging the bore under the action of spring 22 as can be seen in figure 2 due to the interaction between the stops 25 and a radially outward flange 11a provided on piston 11.
- the clutch is disengaged by pressurising bore 12 via inlet 17 to displace piston 11 from the fully retracted position shown in figure 2 in which the clutch is fully engaged to the release position shown in figure 3 in which the piston has been displaced to the left as shown in figure 3 to move the release fingers 21 in the direction of the arrows A of figure 2.
- the release bearing 19 radially within the confines of the body 13 the diameter of the operating piston 11 can be maximised within the available envelope in the engine compartment and the other advantages discussed above are also provided.
- the body of the CSC is a single piece component, leakage from the CSC is reduced when compared with a CSC in which the inner and outer walls defining bore 12 are provided by separate components which must then be sealed to each other.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005000957.2T DE112005000957C5 (en) | 2004-05-22 | 2005-05-17 | Concentric slave cylinder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0411524.2A GB0411524D0 (en) | 2004-05-22 | 2004-05-22 | Concentric slave cylinders |
GB0411524.2 | 2004-05-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005113998A2 true WO2005113998A2 (en) | 2005-12-01 |
WO2005113998A3 WO2005113998A3 (en) | 2006-03-23 |
Family
ID=32607848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2005/001476 WO2005113998A2 (en) | 2004-05-22 | 2005-05-17 | Clutch release bearing assembly with concentric slave cylinders |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE112005000957C5 (en) |
GB (1) | GB0411524D0 (en) |
WO (1) | WO2005113998A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010130535A1 (en) * | 2009-05-12 | 2010-11-18 | Schaeffler Technologies Gmbh & Co. Kg | Clutch actuation bearing device, in particular for a dual clutch system |
WO2014026687A1 (en) * | 2012-08-16 | 2014-02-20 | Schaeffler Technologies AG & Co. KG | Release device for hydraulic clutch actuation |
DE102017125857A1 (en) | 2017-11-06 | 2019-05-09 | Schaeffler Technologies AG & Co. KG | Slave cylinder with corrugated preload spring |
DE102017129558A1 (en) | 2017-12-12 | 2019-06-13 | Schaeffler Technologies AG & Co. KG | Actuation device for a friction clutch |
DE102018109797A1 (en) | 2018-04-24 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Slave cylinder with retaining ring inserted between piston and actuator bearing; Actuating device and coupling system |
WO2021253617A1 (en) * | 2020-06-15 | 2021-12-23 | 舍弗勒技术股份两合公司 | Clutch release auxiliary cylinder |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2468363B (en) * | 2009-03-07 | 2013-05-22 | Ap Racing Ltd | Concentric slave cylinder |
DE102020113204A1 (en) | 2020-05-15 | 2021-11-18 | Schaeffler Technologies AG & Co. KG | CVT transmission |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1401596A (en) * | 1973-04-11 | 1975-07-30 | Skf Ind Trading & Dev | Clutch withdrawal bearing assemblies |
US4949827A (en) * | 1986-10-22 | 1990-08-21 | Automotive Products Plc | Concentrically mounted hydraulic clutch actuator |
WO2005052401A1 (en) * | 2003-11-27 | 2005-06-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Clutch actuators |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993529A (en) * | 1988-02-18 | 1991-02-19 | Automotive Products Plc | Concentrically mounted hydraulic clutch actuator |
US4938332A (en) * | 1988-08-30 | 1990-07-03 | Federal-Mogul Corporation | Hydraulically actuated clutch release mechanism |
JPH053778Y2 (en) * | 1988-11-09 | 1993-01-29 | ||
ES2067035T3 (en) * | 1989-07-04 | 1995-03-16 | Kubota Kk | DEVICE FOR OPERATION OF A VEHICLE CLUTCH. |
JPH04211730A (en) * | 1990-05-15 | 1992-08-03 | Nippon Seiko Kk | Hydraulic clutch release device |
DE4130525C2 (en) | 1991-09-13 | 2000-05-18 | Mannesmann Sachs Ag | Fluid actuated release system |
JPH0628358U (en) * | 1992-09-18 | 1994-04-15 | 株式会社大金製作所 | Hydraulic cylinder device for clutch release |
DE4338256C2 (en) * | 1992-11-14 | 2003-12-11 | Zf Sachs Ag | Motor aid for a hydraulically actuated release device for a drawn friction clutch |
DE4243170C2 (en) * | 1992-12-19 | 1997-06-12 | Daimler Benz Ag | Release device for a vehicle clutch |
DE4412734A1 (en) * | 1993-09-14 | 1995-03-16 | Daikin Mfg Co Ltd | Annular hydraulic clutch-release cylinder arrangement |
FR2744776B1 (en) * | 1996-02-08 | 1998-03-20 | Skf France | CLUTCH STOP WITH ELASTIC SELF-ALIGNMENT MEMBER |
DE19849892A1 (en) * | 1998-10-29 | 2000-05-04 | Schaeffler Waelzlager Ohg | Sealing element for a release bearing |
DE19952142A1 (en) * | 1998-11-05 | 2000-05-11 | Luk Lamellen & Kupplungsbau | Disengaging system has housing, drive shaft, circular pressure compartment, guide sleeve, annular piston, bearing, elastic claw in cavity |
-
2004
- 2004-05-22 GB GBGB0411524.2A patent/GB0411524D0/en not_active Ceased
-
2005
- 2005-05-17 DE DE112005000957.2T patent/DE112005000957C5/en active Active
- 2005-05-17 WO PCT/IB2005/001476 patent/WO2005113998A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1401596A (en) * | 1973-04-11 | 1975-07-30 | Skf Ind Trading & Dev | Clutch withdrawal bearing assemblies |
US4949827A (en) * | 1986-10-22 | 1990-08-21 | Automotive Products Plc | Concentrically mounted hydraulic clutch actuator |
WO2005052401A1 (en) * | 2003-11-27 | 2005-06-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Clutch actuators |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010130535A1 (en) * | 2009-05-12 | 2010-11-18 | Schaeffler Technologies Gmbh & Co. Kg | Clutch actuation bearing device, in particular for a dual clutch system |
WO2014026687A1 (en) * | 2012-08-16 | 2014-02-20 | Schaeffler Technologies AG & Co. KG | Release device for hydraulic clutch actuation |
DE102017125857A1 (en) | 2017-11-06 | 2019-05-09 | Schaeffler Technologies AG & Co. KG | Slave cylinder with corrugated preload spring |
DE102017129558A1 (en) | 2017-12-12 | 2019-06-13 | Schaeffler Technologies AG & Co. KG | Actuation device for a friction clutch |
DE102018109797A1 (en) | 2018-04-24 | 2019-10-24 | Schaeffler Technologies AG & Co. KG | Slave cylinder with retaining ring inserted between piston and actuator bearing; Actuating device and coupling system |
WO2021253617A1 (en) * | 2020-06-15 | 2021-12-23 | 舍弗勒技术股份两合公司 | Clutch release auxiliary cylinder |
EP4166807A4 (en) * | 2020-06-15 | 2024-08-07 | Schaeffler Technologies Ag | Clutch release auxiliary cylinder |
Also Published As
Publication number | Publication date |
---|---|
GB0411524D0 (en) | 2004-06-23 |
WO2005113998A3 (en) | 2006-03-23 |
DE112005000957C5 (en) | 2018-08-09 |
DE112005000957B4 (en) | 2015-08-13 |
DE112005000957T5 (en) | 2007-05-24 |
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