GB2251465A - A mechanical clutch - Google Patents
A mechanical clutch Download PDFInfo
- Publication number
- GB2251465A GB2251465A GB9023635A GB9023635A GB2251465A GB 2251465 A GB2251465 A GB 2251465A GB 9023635 A GB9023635 A GB 9023635A GB 9023635 A GB9023635 A GB 9023635A GB 2251465 A GB2251465 A GB 2251465A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compression means
- mechanical clutch
- drive members
- drive
- clutch
- 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.)
- Withdrawn
Links
- 230000006835 compression Effects 0.000 claims abstract description 47
- 238000007906 compression Methods 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
-
- 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
- F16D13/00—Friction clutches
- F16D13/04—Friction clutches with means for actuating or keeping engaged by a force derived at least partially from one of the shafts to be connected
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
A mechanical clutch (16) for coupling two drive members (18, 20) together in a manner which limits the actuation load the operator has to exert in order to engage the clutch (16) comprises a first drive member (18) having a plurality of driving elements (22) splined thereon, a second driven member (20) having a plurality of driven elements (24) splined thereon, a compression means (46) and an actuation mechanism (54). The driving and driven elements (22, 24) are interleaved to form a stack (44) and the actuation mechanism (54) comprises means operable upon rotation of one of the drive members (18, 20) to couple one of said drive members to the compression means to rotate the compression means and compress the stack (44) and couple the drive members. The compression means (46) comprises a ball and ramp mechanism and the actuation mechanism comprises a rotatable and axially movable friction member (56), a diaphragm spring (60), and a pressure plate (66). <IMAGE>
Description
A MECHANICAL CLUTCH
The present invention relates to a mechanical clutch for coupling two drive members together and more particularly to a mechanical clutch having a plurality of driving and driven elements arranged to form a stack, a compression means to squeeze the stack and thereby couple the drive members and an actuation mechanism for actuating the compression means.
One well known type of clutch comprises a stack of interleaved driving and driven elements mounted on respective first and second drive members for rotation therewith and axial movement relative thereto and a compression means actuated via a manually operable actuation mechanism to squeeze the stack and thereby couple the drive members together. The clutch plates are often bathed in a bath of oil for cooling purposes thereby to form what is commonly known as a wet multi-plate clutch.
In manually operated clutches it is often necessary for the operator to exert an actuation force or energy load on the actuator that is equal, or nearly equal, in magnitude to the force necessary to maintain the stack clamped together when the clutch is in use. This can cause a problem when clutches with high torque carrying capacities and hence high stack clamping and actuation forces are employed.
The above-mentioned problem may be overcome by employing some form of lever arm mechanism giving the operator a mechanical advantage thereby reducing the force he needs to exert to operate the clutch. Such a solution, whilst overcoming one problem associated with such clutches, can result in excessive actuation pedal or lever movement. Excessive pedal movement also causes problems particularly when wet multi-plate clutches are employed in which considerable actuation movement is already required in order to ensure that viscous drag of the oil, when the clutch is disengaged, does not transmit movement from the driving to the driven plate. It is an object of the present invention to mitigate the problems associated with the above-mentioned clutches.
Thus according to the present invention there is provided a mechanical clutch comprising a first drive member having a plurality of first driving elements mounted for rotation therewith and axial movement relative thereto, a second drive member having a plurality of driven elements mounted for rotation therewith and axial movement relative thereto, said driven elements being interleaved with the driving elements to form a stack therewith, rotary compression means for converting rotational movement into axial movement in a first direction to squeeze the stack of driving and driven elements into engagement thereby to couple the first and second drive members and an actuation mechanism comprising means operable upon rotation of one of said drive members to couple one of said drive members to the compression means to rotate the compression means and compress the stack.
It will be appreciated that by coupling one of said drive members to the compression means the actuation load that the operator has to exert in order to engage the clutch is limited to the comparatively low load required to couple one of the drive members to the compression means.
In a preferred embodiment of the present invention, there is provided a mechanical clutch in which the actuation mechanism comprises a first friction member mounted for rotation with one of said drive members and a thrust mechanism operable to force said first friction member into frictional contact with the compression means thereby to rotate the compression means upon rotation of one of said drive members.
The above-mentioned preferred embodiment, apart from being particularly simple and cheap to produce, has a further advantage in that it facilitates a reduction of the operator-applied actuation load in proportion to the number of driving plates in the clutch stack. Hence, if four drive elements drive four driven elements, it is possible to reduce the required actuation load by a factor of four. Also the additional movement required to give separation of additional driving plates does not require additional movement of the operator-applied actuation load.
The thrust mechanism may conveniently comprise spring means to force the first friction member into frictional contact with the compression means to engage the clutch and a transmission means for transmitting an operator-applied force to said spring means to disengage the clutch.
Preferably a pressure plate is provided between the spring means and the first friction member, the pressure plate being movable axially relative to the drive elements to engage the first friction member upon release of the operator applied force and movable axially relative to the drive elements to disengage said member upon application of the operator-applied force.
Preferably, one of the drive members is cup shaped, the cup portion being provided with a plurality of axially extending internal splines which engage with corresponding splines provided on the associated elements.
In a particular embodiment of the present invention, one of the drive members includes an enlargement, the enlargement being provided with a plurality of axially extending external splines which engage with corresponding splines on the associated elements.
Return spring means may be provided to urge the rotary compression means in a second direction opposite to the first direction to ensure that the compression means separates from the stack when the clutch is disengaged.
An actuation rod may be provided which passes through the cup portion and acts between the return spring means and the compression means to urge the compression means out of contact with the stack.
Preferably the compression means comprises a ball and ramp expander mechanism of the type already well-known. A first disk of the expander mechanism is constrained axially relative to the drive members but free to move circumferentially relative thereto and a second disk of the expander mechanism rotates with one of the drive member but is free to move axially relative thereto.
The present invention also provides an actuation mechanism for a mechanical clutch of the type which comprises a first drive member having a plurality of driving elements mounted for rotation therewith and axial movement relative thereto, a second drive member having a plurality of driven elements mounted for rotation therewith and axial movement relative thereto, said driven elements being interleaved with the driving elements to form a stack therewith and rotary compression means for converting rotational movement into axial movement in a first direction to squeeze the stack of driving and driven elements into engagement thereby to couple the first and second drive members, the actuation mechanism comprising means operable upon rotation of one of said drive members to couple one of said drive members to the compression means to rotate the compression means and compress the stack.
Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings.
Throughout the drawings like reference numerals refer to like parts.
The present invention will now be more particularly described, by way of example only, and with reference to the accompanying drawings, in which:
Figure 1 is a view of a tractor incorporating a mechanical clutch
according to the present invention.
Figure 2 is an expanded cross-sectional view of the clutch shown
in Figure 1 in its disengaged state.
Figure 3 is an expanded cross-sectional view of the clutch shown
in Figure 1, in its engaged state.
Figure 4 is a cross-sectional view in the direction of arrows A-A
in Figure 2.
Figure 5 is a cross-sectional view in the direction of arrows B-B
in Figure3.
Referring now to Figure 1, a tractor, shown generally at 10 is provided with an engine, a gearbox and a mechanical clutch whose casings are shown in phantom at 12, 14 and 16 respectively. The internal details of clutch 16, are best seen in Figures 2 and 3, and comprise a first drive member 18, a second drive member 20 and a plurality of driving and driven elements 22, 24. The first drive member 18 is provided with a plurality of splines 26 for engagement with corresponding splines 28 provided on the driving elements 22.
The second drive member 20 is provided with a plurality of splines 30 for engagement with splines 32 provided on the driven elements 24. The first and second drive members 18, 20 may be further provided with splines at 34 and 36 second drive members 18, 20 may be further provided with splines at 34 and 36 for engagement with corresponding splines on an output shaft 38 and an input shaft 40 respectively. The first and second drive members are axially aligned via a bearing 42 which acts between the first drive member 18 and the input shaft 40. The driving and driven elements 20, 22 are interleaved with each other to form a stack 44, as shown in Figures 2 and 3 and the input shaft 40 is driven by the vehicle engine 12.
A compression means shown generally at 46 is provided in the form of a ball and ramp expander mechanism positioned at one end of the stack 44. The expander mechanism 46 comprises two disks, the first of which 46a is provided with an axially extending portion 48 and is mounted for rotation relative to the first drive member 18 via bearing 50. The second disk 46b of the expander mechanism 52b has splines 52 for engagement with splines 30 provided on the second drive member 20.
An actuation mechanism shown generally at 54 is provided to actuate the compression means 46 and effect compression of the stack 44 and coupling of the two drive members 18, 20. The actuation mechanism comprises a first friction member 56 having splines 58 provided thereon in a manner which allows the first friction member 56 to rotate with and move axially along splines 26 provided on said first drive member 18. A thrust member 60, in the form of a diaphragm spring, is connected at the outside diameter to the extended portion 48 and retained relative thereto by circlip 62. The otherwise free ends of the spring 60 engage an axially movable sleeve 62 via bearing 64. A pressure plate 66 is provided between the actuation spring and the first friction member for the transmission of an actuating load therebetween and is splined to the extended portion via splines 67 and 69.Sleeve 62 is generally connected to a foot operated pedal which forms no part of the present application and is therefore not described or shown further herein.
A return spring 68 acts on one end of actuation rod 75 (best seen in Figure 3) the other end of which is in contact with the second disk 46b of the ball and ramp expander to urge it towards a closed (unexpanded) position where it does not contact the stack 44.
Referring now briefly to Figures 4 and 5, it will be seen that a ball and ramp expander 46 comprises the two disks 46a and 46b and a plurality of ball elements 68 positioned therebetween. Each ball element 68 is sandwiched between a pair of inclined faces 70, 72 of sockets 74, 76 provided in the first and second disks 46a, 46b respectively. It will be seen that if disk 46a is moved in the direction of arrow W relative to disk 46b the ball elements rise up the inclined faces and act to separate the two portions of the expander.
Referring now to the drawings in general but particularly to Figure 2, when the clutch is in its disengaged position, sleeve 62 and spring 60 are axially displaced in the direction of arrow B such that pressure plate 66 is free to move axially along splines 69 to a position in which it does not engage friction member 56. When friction member 56 is not engaged by pressure plate 66, it is free to rotate with the first drive member 18 without contacting disk 46b of the ball and ramp expander and without transmitting an actuating load therebetween. When no actuating load is transmitted to the ball and ramp expander, the two disks thereof 46a, 46b are urged to move towards each other by return spring 68 and actuation rod 75 thereby forcing the ball elements to roll down the. inclined faces and allow the two disks 46a, 46b to move towards each other and close the ball and ramp expander.With the ball and ramp expander 46 in its closed position no clamping force is transmitted to the stack 44 and each of the drive and driven members 22, 24 are free to move axially along their respective splines until they disengage each other and the clutch is uncoupled. The clutch may be maintained in its uncoupled state by the operator maintaining an actuation force or energy load on the foot pedal against the action of spring 60 thereby to maintain sleeve 62 and spring 68 in the position shown in Figure 2.
In order to engage the clutch 16 it is merely necessary for the operator to relax the actuation force exerted on the foot pedal and thereby allow spring 60 to move sleeve 62 to the position shown in Figure 3. In this position, spring 60 acts to clamp the rotating friction member 56 between pressure plate 66 and portion 46a of the ball and ramp expander 46. When the friction member 56 is clamped as mentioned, portion 46b rotates in the direction of rotation of the second drive member 20 relative to the first drive member 18 and disk 46a. Rotation of disk 46b relative to portion 46a causes the ball elements 68 to rise up the inclined faces 70, 72 of the ball and ramp expander disks 46a, 46b and cause the two disks to separate.Separation of the two disks 46a, 46b. acts to squeeze the driving and driven members 22, 24 together and clamp them to each other, thereby coupling the drive members together. When the drive members are coupled together, the stack 44 ball and ramp expander 46 and the actuation mechanism 54 all rotate with each other.
It will be appreciated that by employing a rotary compression means 44 and an actuation mechanism 54 in accordance with the present invention, the load which spring 60 must exert in order to effect engagement of the clutch is limited to the load required to couple friction member 56 to the compression means 46. Such load may easily be overridden by the operator to release the clutch without the need for lever arm mechanism and their associated disadvantages.Further to this, it will be appreciated that when a multiplate clutch is employed, as shown in the attached drawings, the load required to couple the friction member 56 to the compression means 46 as a proportion of the total load required to fully engage the clutch may be reduced in proportion to the number of drive elements in the stack since the total load transmitted by the stack is divided equally between the driving/driven element pairs. Hence if four drive elements 22 drive four driven elements 24, it is possible to reduce the required actuation load by a factor of four.
It will also be appreciated that whilst the above-mentioned clutch 16 has been described with the first drive member 18 connected to the output shaft 38 and the second drive member 20 connected to the input shaft 40, these connections may be reversed without significantly affecting the operation of the clutch 16. In the reversed situation, output shaft 38 becomes input shaft 40' and input shaft 40 becomes output shaft 38', as seen in Figure 2. When this arrangement is adopted input shaft 40' is driven by the engine whilst output shaft 38' is initially stationary. A relative speed difference is created between the first friction member 56 and its surrounding components 46a and 66 which are each connected to the second drive member via splines at 67 and 30 respectively. Engagement of the clutch is achieved by releasing the operator-applied force exerted on the foot pedal (not shown) and thereby allowing spring 60 to move sleeve 62 to the position shown in Figure 3. In this position, spring 60 acts to clamp the rotating friction member 56 between pressure plate 66 and disk 46a of the ball and ramp expander 46. When the friction member 56 is clamped as mentioned, disk 46a rotates in the direction of rotation of the first drive member 18 relative to disk 46b which is splined to the stationary second drive member 20. Rotation of disk 46a has the same effect as rotation of disk 46b in that ball elements 68 are forced to rise up inclined faces 70, 72 of the ball and ramp expander and cause the two disks 46a, 46b to separate. Separation of the two disks acts to squeeze the stack as mentioned previously and couple the drive members 18, 20 together.
Claims (17)
1. A mechanical clutch comprising a first drive member having a plurality
of first driving elements mounted for rotation therewith and axial
movement relative thereto, a second drive member having a plurality of
driven elements mounted for rotation therewith and axial movement
relative thereto, said driven elements being interleaved with the
driving elements to form a stack therewith, rotary compression means
for converting rotational movement into axial movement in a first
direction to squeeze the stack of driving and driven elements into
engagement thereby to couple the first and second drive members and an
actuation mechanism comprising means operable upon rotation of one of
said drive members to couple one of said drive members to the
compression means to rotate the compression means and compress the
stack.
2. A mechanical clutch as claimed in Claim 1 in which the actuation
mechanism comprises a first friction member mounted for rotation with
one of said drive members and a thrust mechanism operable to force said
first friction member into frictional contact with the compression
means thereby to rotate the compression means upon rotation of one of
said drive members.
3. A mechanical clutch as claimed in Claim 2 in which the thrust mechanism
comprises spring means to force the first friction member into
frictional contact with the compression means to engage the clutch and
a transmission means for transmitting an operator-applied force to said
spring means to disengage the clutch.
4. A mechanical clutch as claimed in Claim 3 in which the spring means is
operable upon release of the operator-applied force to force said first
friction member into frictional contact with the compression means and
operable upon the application of the operator-applied force to release
said first friction member from frictional contact with said
compression means.
5. A mechanical clutch as claimed in any one of Claims 2 to 4 in which a
pressure plate is provided between the spring means and the first
friction member the pressure plate being movable axially relative to
the drive members to engage the first friction member upon release of
the operator applied force and movable axially relative to the drive
members to disengage said member upon application of the operator
applied force.
6. A mechanical clutch as claimed in Claim 5 in which the pressure plate
is splined to the compression means for rotation therewith and axial
movement therealong.
7. A mechanical clutch as claimed in any one of Claims 3 to 6 in which the
actuation spring is a diaphragm spring the outside diameter of which is
secured to the compression means and acted upon at its inside diameter
by the transmission means.
8. A mechanical clutch as claimed in any one of the preceding Claims in
which one of the drive members is cup shaped, the cup portion being
provided with a plurality of axially extending internal splines which
engage with corresponding splines provided on the associated elements.
9. A mechanical clutch as claimed in any one of the preceding Claims in
which one of the drive members includes an enlargement, the enlargement
being provided with a plurality of axially extending splines which
engage with corresponding splines on the driving elements.
10. A mechanical clutch as claimed in Claims 8 or 9 in which a return
spring means is provided to urge the compression means in the second
direction.
11. A mechanical clutch as claimed in Claim 10 in which an actuator rod
passes through the cup portion and acts between the return spring and
the compression means to urge the compression means out of contact with
the first friction member.
12. A mechanical clutch as claimed in Claim 11 in which the return spring
comprises a diaphragm spring the inside diameter of which is secured
against axial movement relative to the second drive member and the
outside diameter of which moves with the rod.
13. A mechanical clutch as claimed in Claim 6 in which the compression
means is provided with an axially extending portion upon which are
mounted said pressure plate and said actuation spring.
14. A mechanical clutch as claimed in any one of the preceding Claims in
which the compression means comprises a ball and ramp expander
mechanism.
15. A mechanical clutch as claimed in Claim 14 in which a first disk of
said mechanism is constrained axially relative to the first and second
drive members but free to move circum- ferentially relative thereto and
in which a second disk of said mechanism is splined to the second drive
member for rotation therewith and axial movement therealong.
16. A mechanical clutch constructed and arranged substantially as herein
described with reference to and as shown in the accompany drawings.
17. An actuation mechanism for a mechanical clutch of the type which
comprises a first drive member having a plurality of driving elements
mounted for rotation therewith and axial movement relative thereto, a
second drive member having a plurality of driven elements mounted for
rotation therewith and axial movement relative thereto, said driven
elements being interleaved with the driving elements to form a stack
therewith and rotary compression means for converting rotational
movement into axial movement in a first direction to squeeze the stack
of driving and driven elements into engagement thereby to couple the
first and second drive members, the actuation mechanism comprising
means to operate upon rotation of one of said drive members to couple
one of said drive members to the compression means to rotate the
compression means and compress the stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9023635A GB2251465A (en) | 1990-10-31 | 1990-10-31 | A mechanical clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9023635A GB2251465A (en) | 1990-10-31 | 1990-10-31 | A mechanical clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9023635D0 GB9023635D0 (en) | 1990-12-12 |
| GB2251465A true GB2251465A (en) | 1992-07-08 |
Family
ID=10684616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9023635A Withdrawn GB2251465A (en) | 1990-10-31 | 1990-10-31 | A mechanical clutch |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2251465A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5593016A (en) * | 1994-04-07 | 1997-01-14 | Toyota Jidosha Kabushiki Kaisha | Clutch device for an automatic transmission |
| US5603396A (en) * | 1994-03-18 | 1997-02-18 | Toyota Jidosha Kabushiki Kaisha | Clutch device for an automatic transmission |
| US5638933A (en) * | 1995-03-24 | 1997-06-17 | Toyota Jidosha Kabushiki Kaisha | Clutch device |
| US5701983A (en) * | 1995-02-21 | 1997-12-30 | Toyota Jidosha Kabushiki Kaisha | Clutch device |
| GB2329682A (en) * | 1997-06-06 | 1999-03-31 | Jordan Grand Prix Ltd | Multi-plate clutch assembly having housing mounted on gearbox shaft |
| US5954150A (en) * | 1992-06-24 | 1999-09-21 | Borg-Warner Automotive, Inc. | Motor vehicle drive line clutch |
| US6000488A (en) * | 1992-06-24 | 1999-12-14 | Borg-Warner Automotive, Inc. | Motor vehicle transfer case |
| FR2781265A1 (en) * | 1998-07-16 | 2000-01-21 | Mannesmann Sachs Ag | SELF-REINFORCING FRICTION CLUTCH |
| FR2822510A1 (en) * | 2001-03-24 | 2002-09-27 | Zf Sachs Ag | MULTIDISC CLUTCH |
| WO2008066677A2 (en) * | 2006-11-30 | 2008-06-05 | Magna Powertrain Usa, Inc. | Torque limiting shaft and sprocket assembly |
| WO2011050775A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Wet clutch |
| WO2011050772A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Clutch having a pre-clutch and a main clutch |
| WO2011050773A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Clutch assembly |
| WO2012107017A1 (en) * | 2011-02-08 | 2012-08-16 | Schaeffler Technologies AG & Co. KG | Clutch having a pre-clutch and a main clutch |
| WO2014180479A1 (en) * | 2013-05-06 | 2014-11-13 | Schaeffler Technologies Gmbh & Co. Kg | Two-stage clutch |
| CN105723109A (en) * | 2013-11-13 | 2016-06-29 | 舍弗勒技术股份两合公司 | Conversion unit for a main clutch having an inner diameter and an outer diameter about a rotational axis |
| CN108980228A (en) * | 2018-08-20 | 2018-12-11 | 上海建麟汽车科技有限公司 | Pressing device, gearbox, clutch, brake and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB784881A (en) * | ||||
| GB1320875A (en) * | 1971-01-14 | 1973-06-20 | Vauxhall Motors Ltd | Torque-responsive coupling assemblies |
-
1990
- 1990-10-31 GB GB9023635A patent/GB2251465A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB784881A (en) * | ||||
| GB1320875A (en) * | 1971-01-14 | 1973-06-20 | Vauxhall Motors Ltd | Torque-responsive coupling assemblies |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5954150A (en) * | 1992-06-24 | 1999-09-21 | Borg-Warner Automotive, Inc. | Motor vehicle drive line clutch |
| US6000488A (en) * | 1992-06-24 | 1999-12-14 | Borg-Warner Automotive, Inc. | Motor vehicle transfer case |
| US5603396A (en) * | 1994-03-18 | 1997-02-18 | Toyota Jidosha Kabushiki Kaisha | Clutch device for an automatic transmission |
| US5593016A (en) * | 1994-04-07 | 1997-01-14 | Toyota Jidosha Kabushiki Kaisha | Clutch device for an automatic transmission |
| US5701983A (en) * | 1995-02-21 | 1997-12-30 | Toyota Jidosha Kabushiki Kaisha | Clutch device |
| US5638933A (en) * | 1995-03-24 | 1997-06-17 | Toyota Jidosha Kabushiki Kaisha | Clutch device |
| GB2329682A (en) * | 1997-06-06 | 1999-03-31 | Jordan Grand Prix Ltd | Multi-plate clutch assembly having housing mounted on gearbox shaft |
| FR2781265A1 (en) * | 1998-07-16 | 2000-01-21 | Mannesmann Sachs Ag | SELF-REINFORCING FRICTION CLUTCH |
| US6189667B1 (en) | 1998-07-16 | 2001-02-20 | Mannesmann Sachs Ag | Self-reinforcing friction clutch |
| FR2822510A1 (en) * | 2001-03-24 | 2002-09-27 | Zf Sachs Ag | MULTIDISC CLUTCH |
| WO2008066677A2 (en) * | 2006-11-30 | 2008-06-05 | Magna Powertrain Usa, Inc. | Torque limiting shaft and sprocket assembly |
| WO2008066677A3 (en) * | 2006-11-30 | 2008-08-28 | Magna Powertrain Usa Inc | Torque limiting shaft and sprocket assembly |
| US8307731B2 (en) | 2006-11-30 | 2012-11-13 | Magna Powertrain Usa, Inc. | Torque limiting shaft and sprocket assembly |
| WO2011050773A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Clutch assembly |
| US8579095B2 (en) | 2009-10-29 | 2013-11-12 | Schaeffler Technologies AG & Co. KG | Clutch having a pre-clutch and a main clutch |
| CN102549287A (en) * | 2009-10-29 | 2012-07-04 | 舍弗勒技术股份两合公司 | Clutch device |
| CN102549287B (en) * | 2009-10-29 | 2015-07-29 | 舍弗勒技术股份两合公司 | Clutch device |
| WO2011050775A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Wet clutch |
| JP2013509542A (en) * | 2009-10-29 | 2013-03-14 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | Clutch with pilot clutch and main clutch |
| US8464852B2 (en) | 2009-10-29 | 2013-06-18 | Schaeffler Technologies AG & Co. KG | Wet clutch |
| WO2011050772A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Clutch having a pre-clutch and a main clutch |
| JP2014505218A (en) * | 2011-02-08 | 2014-02-27 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | Clutch including pilot clutch and main clutch |
| WO2012107017A1 (en) * | 2011-02-08 | 2012-08-16 | Schaeffler Technologies AG & Co. KG | Clutch having a pre-clutch and a main clutch |
| US9193009B2 (en) | 2011-02-08 | 2015-11-24 | Schaeffler Technologies AG & Co. KG | Clutch having a pre-clutch and a main clutch |
| WO2014180479A1 (en) * | 2013-05-06 | 2014-11-13 | Schaeffler Technologies Gmbh & Co. Kg | Two-stage clutch |
| CN105308344A (en) * | 2013-05-06 | 2016-02-03 | 舍弗勒技术股份两合公司 | Two-stage clutch |
| US10006500B2 (en) * | 2013-05-06 | 2018-06-26 | Schaeffler Technologies AG & Co. KG | Two-stage clutch |
| CN105723109A (en) * | 2013-11-13 | 2016-06-29 | 舍弗勒技术股份两合公司 | Conversion unit for a main clutch having an inner diameter and an outer diameter about a rotational axis |
| CN108980228A (en) * | 2018-08-20 | 2018-12-11 | 上海建麟汽车科技有限公司 | Pressing device, gearbox, clutch, brake and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9023635D0 (en) | 1990-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2251465A (en) | A mechanical clutch | |
| JP3658711B2 (en) | Ball ramp mechanism and drive system clutch provided with the same | |
| JP3658712B2 (en) | Ball ramp mechanism and drive system clutch using the same | |
| US4550817A (en) | Mechanical clutch | |
| US5954173A (en) | Drive force transmission apparatus | |
| JPH025932B2 (en) | ||
| US6666315B2 (en) | Ball ramp clutch with indexing plates | |
| US3763977A (en) | Brake with torque limiting coupling | |
| EP3099952B1 (en) | Composite friction and dog clutch | |
| US20110186399A1 (en) | Lever applied dry clutch | |
| US4778039A (en) | Friction clutch having premounted release bearing and premounted release mechanism | |
| CN107218317B (en) | Friction clutch for a vehicle transmission | |
| CN111433490A (en) | Differential device capable of two-stage limiting differential motion | |
| US2129366A (en) | Fluid clutch automatic transmission | |
| US5829566A (en) | Clutch pack with double-sided clutch plates | |
| US2588482A (en) | Friction clutch, brake, and coupling | |
| JPH0396734A (en) | Double mass fly wheel | |
| US3976174A (en) | Clutch disc with coaxial brake | |
| GB2191252A (en) | Friction clutch | |
| RU2286262C2 (en) | Cone clutch | |
| US3078972A (en) | Power transmissions | |
| US2613777A (en) | Combination spring-loaded and overcenter clutch | |
| JP4176168B2 (en) | Centrifugal clutch | |
| JP2000055081A (en) | Conical clutch | |
| JPS58163830A (en) | Clutch interrupting group for rotary clutch assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |