CN101709750B - Wet-type multi-disc clutch - Google Patents
Wet-type multi-disc clutch Download PDFInfo
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- CN101709750B CN101709750B CN 200910225563 CN200910225563A CN101709750B CN 101709750 B CN101709750 B CN 101709750B CN 200910225563 CN200910225563 CN 200910225563 CN 200910225563 A CN200910225563 A CN 200910225563A CN 101709750 B CN101709750 B CN 101709750B
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Abstract
The invention provides a wet-type multi-disc clutch. The surface of the annular piston thereof facing a driving disc is an arc face with the middle part protruding toward the driving disc, the right end face of the annular piston is matched with the left end face of the driving disc, which is arranged at the left end of the cavity of the outer hub, a plurality of bearings for installing a support seat comprise a left end face bearing, a left antifriction bearing and a right antifriction bearing or a left sliding bearing and a right sliding bearing, and a right end face bearing, the left end face bearing is sheathed at the left end of the support seat, the left end face of the left end face bearing is attached to the right end of a connection disc on the support seat, right end face of the left end face bearing is attached to the outer hub seat and the left end of the outer hub, two ends of the of the outer hub seat are sheathed the outer cylindrical surface of the support seat respectively by the left antifriction bearing and the right antifriction bearing or the left sliding bearing and the right sliding bearing. The invention aims to provide wet-type multi-disc clutch having even pressure distribution, small and even abrasion, small axial dimension, long service life, high transmission and installation preciseness, and low production cost.
Description
Technical field
The present invention relates to a kind of clutch, relate in particular to a kind of multi-disc wet clutch that can be applicable to Motor Vehicle.
Background technique
Multi-disc wet clutch has characteristics such as stable friction performance, controllability and controlling performance are good, wearing and tearing are little and even, transmitting torque is big.Simultaneously owing to adopt cold oil cooling associated components, and have a plurality of rubbing surfaces, its life-span can reach 5～6 times of dry clutch, has therefore obtained using widely in transmission system.But the rigidity of existing multi-disc wet clutch is relatively poor, in the clutch cohesive process, if contact pressure is inhomogeneous, will cause the friction means part high pressure, high temperature to occur, causes heat etching.Proposed to do the mode of annular piston cylinder among the U.S. Pat 6745880B1 with thin-walled punching press elastic element, by a thicker force application board clutch is pressurizeed, but the annular piston rigidity in this scheme is not good enough, owing to increased thicker force application board, increased the axial dimension of clutch.U.S. Pat 7258218B2 discloses a plurality of boss has been set on the annular piston force surface, can realize elastic element with the stepless action of clutch Driving force on the clutch friction face, but this scheme complex process has increased processing cost.In addition, the bearing of end face bearing and rolling bearing being made the integral type of one is normally adopted in the support of existing multi-disc wet clutch location, but this bearing axial dimension is bigger, and cost of production is higher.
Summary of the invention
The object of the present invention is to provide a kind of pressure distribution even, it is little and even to wear and tear, and axial dimension is little, long service life, transmission and installation precision height, the multi-disc wet clutch that cost of production is low.
Multi-disc wet clutch of the present invention, comprise the positioning supports unit, the power input unit, performance element and power output unit, the positioning supports unit comprises columniform supporting base and a plurality of bearings that are installed on the supporting base, described power input unit comprises outer hub, gear, outer hub seat and a plurality of driving disc, described performance element comprises by outer hub, annular oil cavity that outer hub seat and annular piston surround and the resetting means that allows annular piston in annular oil cavity, move to left and to reset, described power output unit comprises a plurality of driven discs, interior hub and the spline housing that is connected that is positioned at hub endoporus place, described annular piston is the arc shaped surface of middle part towards the driving disc projection towards the surface of described driving disc, the arc shaped surface of annular piston matches with the driving disc left side that is positioned at described outer hub cavity left end, the described a plurality of bearings that are used to install supporting base comprise the left side bearing, a left side, a right rolling bearing or a left side, right sliding bearing and right side bearing, described supporting base is cylindrical, the left end of supporting base has land, described left side bearing housing is contained in the left end of supporting base, the right-hand member of the land on the left side of left side bearing and the supporting base pastes mutually, paste mutually with the left end of outer hub seat and outer hub the right side of left side bearing, outer hub seat is a cylindrical shape, the left end of outer hub is sleeved on the outer peripheral surface of outer hub seat left end, a left side is adopted at the two ends of outer hub seat respectively, a right rolling bearing or a left side, right sliding bearing is sleeved on the external cylindrical surface of described supporting base, paste mutually with the left side of right side bearing the right side of supporting base, and paste mutually with the left side of interior hub the right side of right side bearing.
Multi-disc wet clutch of the present invention, be respectively equipped with hydraulic oil port and lubricated hydraulic fluid port on the left side of wherein said supporting base, hydraulic oil port is held annular oil cavity by hydraulic pressure oil duct and hydraulic pressure and is communicated, lubricated hydraulic fluid port holds annular oil cavity and communicates with lubricating by oil leab, lubricated hold annular oil cavity and described hydraulic pressure hold annular oil cavity the external cylindrical surface of described supporting base and described outside between the endoporus of hub seat, lubricated hold the two ends, the left and right sides that annular oil cavity and hydraulic pressure holds annular oil cavity and adopt the seal ring sealing respectively, hydraulic pressure holds annular oil cavity and communicates with the described annular oil cavity that described outer hub and described outer hub seat surround by oil duct, described lubricating held annular oil cavity by oil duct and described annular piston, hub in described, described outer hub, counterbalance annular oil pocket between described driving disc and the described driven disc communicates, when annular piston pastes mutually with driving disc, hydraulic oil in the counterbalance annular oil pocket is difficult to flow out, when annular piston separated with driving disc, the hydraulic oil in the counterbalance annular oil pocket can be from smooth and easy outflow between annular piston and the driving disc.
Multi-disc wet clutch of the present invention, the wherein said annular piston resetting means that resets that moves to left in described annular oil cavity that allows comprises a plurality of springs, paste mutually with the left end of a plurality of springs the inboard of annular piston right side, the right-hand member of each spring withstands on axle respectively with on the collar, axle is sleeved on the cylindrical of described outer hub right-hand member with collar, the right side of the driving disc of described right-hand member withstands on the hole with the left end of back-up ring, and the hole is installed on the right-hand member in the cavity of described outer hub with back-up ring.
Multi-disc wet clutch of the present invention, wherein said outer hub, described gear and described outer hub seat one link to each other, and described interior hub links to each other with the described spline housing one that is connected.
Multi-disc wet clutch of the present invention, wherein a plurality of described spring shackles hub seat outside described arranges that evenly the two ends of each spring are separately installed with spring guide rail.
Multi-disc wet clutch of the present invention, the quantity of wherein said spring are 3-12.
Multi-disc wet clutch of the present invention, its annular piston is the arc shaped surface of middle part towards right projection towards the surface of described driving disc, even annular piston deviation occurs in driving the process of driving disc with in the certain limit of point of contact at arc shaped surface of driving disc, also can guarantee the uniformity of propagation of pressure, allow driving disc combine with driven disc steadily, avoid corresponding component the high pressure heat etching to occur, and it is little and even to wear and tear, long service life.The a plurality of bearings that are used to install supporting base of the present invention comprise the left side bearing, a left side, a right rolling bearing or a left side, right sliding bearing and right side bearing, supporting base is cylindrical, the left end of supporting base has land, the left side bearing housing is contained in the left end of supporting base, the right-hand member of the land on the left side of left side bearing and the supporting base pastes mutually, paste mutually with the left end of outer hub seat and outer hub the right side of left side bearing, outer hub seat is a cylindrical shape, the left end of outer hub is sleeved on the outer peripheral surface of outer hub seat left end, a left side is adopted at the two ends of outer hub seat respectively, a right rolling bearing or a left side, right sliding bearing is sleeved on the external cylindrical surface of described supporting base, the right-hand member of the external cylindrical surface of supporting base pastes mutually with the left side of right side bearing, and paste mutually with the left side of interior hub the right side of right side bearing.Adopt the technological scheme of bearing that end face bearing and rolling bearing are made the integral type of one to compare with the support of existing multi-disc wet clutch location, the support stiffness height of the above-mentioned design proposal of multi-disc wet clutch of the present invention, axial dimension is little, transmission and installation precision height, cost of production is lower.
Other details of multi-disc wet clutch of the present invention and characteristics can just can be cheer and bright by reading the embodiment hereinafter encyclopaedize in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the plan view sectional drawing of the structural representation of multi-disc wet clutch of the present invention;
Structural representation when Fig. 2 pastes with driving disc mutually for annular piston of the present invention.
Embodiment
As shown in Figure 1, multi-disc wet clutch of the present invention, comprise the positioning supports unit, the power input unit, performance element and power output unit, the positioning supports unit comprises columniform supporting base 1 and a plurality of bearings that are installed on the supporting base 1, the power input unit comprises outer hub 17, gear 22, outer hub seat 15 and a plurality of driving disc 192, outer hub 17, gear 22 can manufacture the structure that one links to each other with outer hub seat 15, performance element comprises by outer hub 17, annular oil cavity 23 that outer hub seat 15 and annular piston 20 surround and the resetting means that allows annular piston 20 in annular oil cavity 23, move to left and to reset, the resetting means that allows annular piston 20 move to left in annular oil cavity 23 to reset comprises a plurality of springs 72, paste mutually with the left end of a plurality of springs 72 inboard of annular piston 20 right sides, the right-hand member of each spring 72 withstands on axle respectively with on the collar 8, axle is sleeved on the cylindrical of outer hub 17 right-hand members with collar 8, the right side of the driving disc 192 of right-hand member withstands on the left end of hole with back-up ring 16, and the hole is installed on the interior right-hand member of cavity of outer hub 17 with back-up ring 16.A plurality of springs 72 arrange evenly that around outer hub seat 15 quantity of spring 72 is 3-12.The two ends of each spring 72 are separately installed with spring guide rail 71,73, and spring guide rail 71,73 is used for spring 72 is positioned.Power output unit comprises a plurality of driven discs 191, interior hub 13 be positioned at hub 13 endoporus places be connected spline housing 131, interior hub 13 be connected spline housing 131 and can manufacture the structure that one links to each other, driving disc 192 and driven disc 191 interlaced layouts, annular piston 20 is the arc shaped surface of middle part towards driving disc 192 projectioies towards the surface of driving disc 192, the arc shaped surface of annular piston 20 matches with driving disc 192 left sides that are positioned at outer hub 17 cavity left ends, the a plurality of bearings that are used to install supporting base 1 comprise left side bearing 2, a left side, a right rolling bearing or a left side, right sliding bearing 3,11 and right side bearing 10, supporting base 1 is cylindrical, the left end of supporting base 1 has land, left side bearing 2 is sleeved on the left end of supporting base 1, the right-hand member of the land on the left side of left side bearing 2 and the supporting base 1 pastes mutually, paste mutually with the left end of outer hub seat 15 and outer hub 17 right side of left side bearing 2, outer hub seat 15 is a cylindrical shape, the left end of outer hub 17 is sleeved on the outer peripheral surface of outer hub seat 15 left ends, a left side is adopted at the two ends of outer hub seat 15 respectively, a right rolling bearing or a left side, right sliding bearing 3,11 are sleeved on the external cylindrical surface of supporting base 1, paste mutually with the left side of right side bearing 10 right side of supporting base 1, and paste mutually with the left side of interior hub 13 right side of right side bearing 10.Compare with the integrated bearing technological scheme that the support location employing of existing multi-disc wet clutch is made one with end face bearing and rolling bearing, the above-mentioned design proposal support stiffness height of multi-disc wet clutch of the present invention, axial dimension is little, transmission and installation precision height, and cost of production is lower.
On the left side of supporting base 1, be respectively equipped with hydraulic oil port 24 and lubricated hydraulic fluid port 25, hydraulic oil port 24 is held annular oil cavity 27 by hydraulic pressure oil duct 26 and hydraulic pressure and is communicated, lubricated hydraulic fluid port 25 holds annular oil cavity 29 and communicates with lubricating by oil leab 28, lubricated hold annular oil cavity 29 and hydraulic pressure hold annular oil cavity 27 the external cylindrical surface of supporting base 1 and outside between the endoporus of hub seat 15, lubricated hold the two ends, the left and right sides that annular oil cavity 29 and hydraulic pressure holds annular oil cavity 27 and adopt the seal ring sealing respectively, hydraulic pressure holds annular oil cavity 27 and communicates with the annular oil cavity 23 that outer hub 17 and outer hub seat 15 surround by oil duct, lubricate and hold annular oil cavity 29 by oil duct and annular piston 20, interior hub 13, outer hub 17, counterbalance annular oil pocket 30 between driving disc 192 and the driven disc 191 communicates, when annular piston 20 pastes mutually with driving disc 192, hydraulic oil in the counterbalance annular oil pocket 30 is difficult to flow out, when annular piston 20 separated with driving disc 192, the hydraulic oil in the counterbalance annular oil pocket 30 can be from smooth and easy outflow between annular piston 20 and the driving disc 192.
When annular piston 20 pastes mutually with driving disc 192, hydraulic oil in the counterbalance annular oil pocket 30 is difficult to flow out, because the flow process of hydraulic oil is obstructed, at counterbalance annular oil pocket 30 inner meeting accumulation hydraulic oil, when the driving disc 192 of clutch fits together with driven disc 191 under the impetus of annular piston 20, outer hub 17, when outer hub seat 15 and annular piston 20 are in rotary state, can allow counterbalance annular oil pocket 30 interior hydraulic oil under action of centrifugal force, produce a hydraulic coupling, this hydraulic coupling can act on the annular piston 20, the hydraulic coupling that produces under action of centrifugal force with hydraulic oil in the counterbalance annular oil pocket 23.When the annular piston 20 of clutch after separating with driving disc 192 under the impetus of spring 72, driving disc 192 also can separate with driven disc 191, when outer hub 17, outer hub seat 15 and annular piston 20 remain static, the counterbalance annular oil pocket is also opened fully, be in open state, hydraulic oil in the counterbalance annular oil pocket 30 can amass oil from smooth and easy outflow between annular piston 20 and the driving disc 192 in the counterbalance annular oil pocket, can not influence the bonding state of clutch.
In the engineering field, because the existence of element size tolerance and power effect distortion, make multi-disc wet clutch when joint carries out power transmission, the situation of the point of action offset design position of meeting generation power, cause clutch the inhomogeneous of propagation of pressure can occur thus, cause corresponding component the high pressure heat etching to occur.Multi-disc wet clutch of the present invention, the drive surface of annular piston 20 is designed to an arc shaped surface of giving prominence to towards driving disc 192, as shown in Figure 2, even annular piston 20 occurs deviation with the point of contact of driving disc in the arc shaped surface certain limit in driving the process of driving disc 192, also can guarantee the uniformity of propagation of pressure, allow driving disc 192 combine steadily, avoid corresponding component the high pressure heat etching to occur with driven disc 191.
Multi-disc wet clutch of the present invention in use, hydraulic oil in the fuel tank can flow into or outflow hydraulic pressure oil duct 26 by hydraulic oil port 24, the hydraulic oil that enters hydraulic pressure oil duct 26 can hold annular oil cavity 27 inflows or flow out annular oil cavity 23 by hydraulic pressure, after hydraulic oil flows into annular oil cavity 23, the hydraulic coupling of being transmitted can act on the annular piston 20, allow annular piston 20 towards right motion, and make driving disc 192 towards right motion and compress each spring 72, so, driving disc 192 fits together with driven disc 191 under the impetus of annular piston 20, the power that hub 17 passes over through driving disc 192 again outside gear 22 warps, can be delivered to driven disc 191, by driven disc 191 again through interior hub 13 be connected spline housing 131 and pass.When the annular piston 20 of clutch separated with driving disc 192 under the impetus of a plurality of springs 72, hydraulic oil can flow out annular oil cavity 23, and flows out hydraulic oil port 24 through former road.
Hydraulic oil in the fuel tank also can flow into oil leab 28 by lubricated hydraulic fluid port 25, flow into the lubricated annular oil cavity 29 that holds by oil leab 28 again, flow into counterbalance annular oil pocket 30 by the lubricated annular oil cavity 29 that holds again, flow back to fuel tank by the gap between driving disc 192 and the driven disc 191 again.
Embodiment recited above is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. multi-disc wet clutch, comprise the positioning supports unit, the power input unit, performance element and power output unit, the positioning supports unit comprises columniform supporting base (1) and is installed in a plurality of bearings on the supporting base (1), described power input unit comprises outer hub (17), gear (22), outer hub seat (15) and a plurality of driving disc (192), described performance element comprises by outer hub (17), annular oil cavity (23) that outer hub seat (15) and annular piston (20) surround and the resetting means that allows annular piston (20) in annular oil cavity (23), move to left and to reset, described power output unit comprises a plurality of driven discs (191), interior hub (13) be positioned at hub (13) endoporus place be connected spline housing (131), it is characterized in that described annular piston (20) is the arc shaped surface of middle part towards described driving disc (192) projection towards the surface of described driving disc (192), the arc shaped surface of annular piston (20) matches with driving disc (192) left side of the left end that is positioned at described outer hub (17) cavity, the described a plurality of bearings that are used to install supporting base (1) comprise left side bearing (2), a left side, a right rolling bearing or a left side, right sliding bearing (3,11) and right side bearing (10), described supporting base (1) is cylindrical, the left end of supporting base (1) has land, described left side bearing (2) is sleeved on the left end of supporting base (1), the right-hand member of the land on the left side of left side bearing (2) and the supporting base (1) pastes mutually, paste mutually with the left end of outer hub seat (15) and outer hub (17) right side of left side bearing (2), outer hub seat (15) is a cylindrical shape, the left end of outer hub (17) is sleeved on the outer peripheral surface of outer hub seat (15) left end, a left side is adopted at the two ends of outer hub seat (15) respectively, a right rolling bearing or a left side, right sliding bearing (3,11) be sleeved on the external cylindrical surface of described supporting base (1), paste mutually with the left side of right side bearing (10) right side of supporting base (1), and paste mutually with the left side of interior hub (13) right side of right side bearing (10).
2. multi-disc wet clutch according to claim 1, it is characterized in that being respectively equipped with hydraulic oil port (24) and lubricated hydraulic fluid port (25) on the left side of described supporting base (1), hydraulic oil port (24) is held annular oil cavity (27) by hydraulic pressure oil duct (26) and hydraulic pressure and is communicated, lubricated hydraulic fluid port (25) holds annular oil cavity (29) and communicates with lubricating by oil leab (28), lubricated annular oil cavity (29) and the described hydraulic pressure of holding holds between the endoporus that annular oil cavity (27) is positioned at the external cylindrical surface of described supporting base (1) and described outer hub seat (15), lubricated hold the two ends, the left and right sides that annular oil cavity (29) and hydraulic pressure holds annular oil cavity (27) and adopt seal ring to seal respectively, hydraulic pressure holds annular oil cavity (27) and communicates with the described annular oil cavity (23) that described outer hub (17) and described outer hub seat (15) surround by oil duct, described lubricating held annular oil cavity (29) by oil duct and described annular piston (20), hub (13) in described, described outer hub (17), counterbalance annular oil pocket (30) between described driving disc (192) and the described driven disc (191) communicates, when annular piston (20) and driving disc (192) when pasting mutually, hydraulic oil in the counterbalance annular oil pocket (30) is difficult to flow out, when annular piston (20) and driving disc (192) when separating, the hydraulic oil in the counterbalance annular oil pocket (30) can be from smooth and easy outflow between annular piston (20) and the driving disc (192).
3. multi-disc wet clutch according to claim 2, it is characterized in that described annular piston (20) resetting means that resets that moves to left that allows comprises a plurality of springs (72) in described annular oil cavity (23), paste mutually with the left end of a plurality of springs (72) inboard of annular piston (20) right side, the right-hand member of each spring (72) withstands on axle respectively with on the collar (8), axle is sleeved on the cylindrical of described outer hub seat (15) right-hand member with collar (8), the right side of the driving disc of described right-hand member (192) withstands on the left end of hole with back-up ring (16), and the hole is installed on the interior right-hand member of cavity of described outer hub (17) with back-up ring (16).
4. multi-disc wet clutch according to claim 3 is characterized in that described outer hub (17), described gear (22) and described outer hub seat (15) one link to each other, and described interior hub (13) links to each other with described spline housing (131) one that is connected.
5. multi-disc wet clutch according to claim 4 is characterized in that a plurality of described springs (72) around the even layout of described outer hub seat (15), and the two ends of each spring (72) are separately installed with spring guide rail (71,73).
6. multi-disc wet clutch according to claim 5 is characterized in that describedly, and the quantity of described spring (72) is 3-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910225563 CN101709750B (en) | 2009-12-03 | 2009-12-03 | Wet-type multi-disc clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910225563 CN101709750B (en) | 2009-12-03 | 2009-12-03 | Wet-type multi-disc clutch |
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| Publication Number | Publication Date |
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| CN101709750A CN101709750A (en) | 2010-05-19 |
| CN101709750B true CN101709750B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910225563 Active CN101709750B (en) | 2009-12-03 | 2009-12-03 | Wet-type multi-disc clutch |
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| CN (1) | CN101709750B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920694B (en) * | 2010-06-12 | 2012-11-07 | 北京科技大学 | Wheel motor brake device for electric drive heavy vehicle |
| CN101979898B (en) * | 2010-08-20 | 2013-06-26 | 重庆青山工业有限责任公司 | Dual-clutch automated transmission |
| DE102011120441A1 (en) * | 2011-12-07 | 2013-06-13 | Borgwarner Inc. | Support assembly for coupling device connected at upstream of automotive vehicle transmission, has clutch that is supported in radial direction on transmission-side support element with interposition of sleeve support arrangement |
| DE102013224473A1 (en) * | 2012-12-17 | 2014-06-18 | Schaeffler Technologies Gmbh & Co. Kg | Actuating system for friction clutch for transmission of motor vehicle, has piston has recess in fleeing oil chamber, where return spring is arranged in recess, so that piston is adjustable by return spring contrary to operating direction |
| CN104482069B (en) * | 2014-12-04 | 2018-01-30 | 湖南江麓容大车辆传动股份有限公司 | The lubricating arrangement of clutch |
| CN106763619A (en) * | 2017-01-22 | 2017-05-31 | 北京航空航天大学 | Two shift transmission used for electric vehicle |
| CN108825676B (en) * | 2018-05-29 | 2022-06-10 | 中国北方车辆研究所 | Oil cylinder of wet-type gear shifting clutch |
| CN109058320A (en) * | 2018-08-01 | 2018-12-21 | 格特拉克（江西）传动系统有限公司 | A kind of cooling oilhole piston reply structure of wet-type dual-clutch |
| DE102019122484A1 (en) * | 2019-08-21 | 2021-02-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Hub bearing for bearing a hub on a shaft, as well as a system of hub bearing, hub and shaft |
| CN111306215B (en) * | 2019-12-04 | 2021-06-08 | 安徽江淮汽车集团股份有限公司 | Wet-type single clutch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004251372A (en) * | 2003-02-20 | 2004-09-09 | Nsk Warner Kk | Multiplate wet clutch |
| KR100802714B1 (en) * | 2006-12-13 | 2008-02-12 | 현대자동차주식회사 | Wet type multiple disc clutch for transmission |
| CN201561072U (en) * | 2009-12-03 | 2010-08-25 | 重庆青山工业有限责任公司 | Wet type multi-sheet clutch |
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2009
- 2009-12-03 CN CN 200910225563 patent/CN101709750B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004251372A (en) * | 2003-02-20 | 2004-09-09 | Nsk Warner Kk | Multiplate wet clutch |
| KR100802714B1 (en) * | 2006-12-13 | 2008-02-12 | 현대자동차주식회사 | Wet type multiple disc clutch for transmission |
| CN201561072U (en) * | 2009-12-03 | 2010-08-25 | 重庆青山工业有限责任公司 | Wet type multi-sheet clutch |
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| CN101709750A (en) | 2010-05-19 |
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