IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0048837
(2001-06-28)
|
우선권정보 |
FR-2000-008430 (2000-06-29) |
국제출원번호 |
PCT/FR01/02078
(2002-02-06)
|
국제공개번호 |
WO02/01091
(2002-01-03)
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발명자
/ 주소 |
- Arhab, Rabah
- Satonnet, Daniel
- Termenon, Norbert
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
The invention concerns a hydrokinetic apparatus, in particular for motor vehicle, comprising a casing ( 10 ); a turbine wheel ( 16 ) secured in rotation to a hub ( 30 ); a lock-clutch comprising a piston ( 50 ) whereof the radially inner part ( 54 ) is mounted sliding along an outer cylindrical shaf
The invention concerns a hydrokinetic apparatus, in particular for motor vehicle, comprising a casing ( 10 ); a turbine wheel ( 16 ) secured in rotation to a hub ( 30 ); a lock-clutch comprising a piston ( 50 ) whereof the radially inner part ( 54 ) is mounted sliding along an outer cylindrical shaft ( 58 ) belonging to the central ring called piston ( 50, 54 ) whereof a rear end surface ( 64 ) extends opposite a transverse surface belonging to the turbine wheel ( 16 )/hub ( 30, 86 ) assembly, and comprising stop means ( 84 ) axially interposed between the central ring and the turbine wheel/hub assembly. The invention is characterised in that are provided radial centering means for axial stop ( 84 ) relative to the hub ( 30, 5 ) or relative to the piston ( 50, 54 ) or relative to the web ( 104 ).
대표청구항
▼
1. A hydrokinetic coupling apparatus, for a motor vehicle, comprising:a casing ( 10 ) having a generally transversely oriented wall ( 36 ) adapted to be coupled in rotation to a driving shaft;a turbine wheel ( 16 ) including an internal plate element ( 104 ) and coupled in rotation to a hub ( 30 ) w
1. A hydrokinetic coupling apparatus, for a motor vehicle, comprising:a casing ( 10 ) having a generally transversely oriented wall ( 36 ) adapted to be coupled in rotation to a driving shaft;a turbine wheel ( 16 ) including an internal plate element ( 104 ) and coupled in rotation to a hub ( 30 ) which is adapted to be counted in rotation to a driven shaft;a lock-up clutch ( 14 ) interposed between the turbine wheel ( 16 ) and the transverse wall ( 36 ), and including, arranged axially between the turbine wheel ( 16 ) and the transverse wall ( 36 ), a generally transversely oriented piston ( 50 ), a radially inner portion ( 54 ) of which is mounted for sliding movement along a cylindrical outer surface ( 58 ) of a central sleeve which an annular transverse rear end face ( 64 ) thereof lies facing a front transverse face of an assembly including the turbine wheel ( 16 ) and hub ( 30 , 86 ); anda thrust bearing ( 84 ) interposed axially between the annular transverse rear end face ( 64 ) of the central sleeve and the front transverse face ( 102 ) to limit friction there between, a portion ( 88 ) of the thrust bearing extends radially outward beyond said rear end face ( 64 ) and being disposed facing a rear transverse face ( 51 ) of the radially inner portion ( 54 ) of the piston ( 50 ) so as to constitute an axial abutment defining the maximum rearward position of the piston ( 50 ) when the clutch is disengaged;wherein said portion 88 is formed as a ring extension ( 88 ) of a front ring portion 108 of said thrust bearing, said thrust bearing being disposed radially inward of said radially inner portion ( 54 ) of the piston ( 50 ) while ring extension portion 88 extends radially outward beyond said radially inner portion ( 54 ) of the piston ( 50 ) thereby providing said axial abutment to engaging piston 50 ; andwherein said extension ( 88 ) is formed as an elastic member provided to absorb shock when engaging piston 50 . 2. Apparatus according to claim 1, wherein the abutment includes an axial bearing ( 84 ) with rolling elements, which is interposed axially between the annular transverse rear end face ( 64 ) of the central sleeve ( 52 ) and the said transverse front face ( 102 ) of the assembly consisting of the turbine wheel and hub, and at least one ring ( 108 ) of the axial thrust bearing ( 84 ) includes a radially oriented annular portion ( 88 ) which lies facing the said transverse rear face ( 51 ) of the radially inner portion ( 54 ) of the piston. 3. Apparatus according to claim 2, wherein the at least one ring ( 108 ) is at least one front ring ( 108 ) interposed axially between the central sleeve ( 52 ) and the rolling elements ( 106 ), and extending in a generally radial direction and in facing relationship with the said annular transverse rear end face ( 64 ) of the central sleeve ( 52 ), the said front ring having an annular extension ( 88 ) extending radially outwards beyond the ring ( 108 ) and having the transverse front face ( 89 ) in facing relationship with the said transverse rear face ( 51 ) of the radially inner portion ( 54 ) of the piston ( 50 ). 4. Apparatus according to claim 1, wherein the hub ( 30 ) includes a radially oriented plate portion ( 86 ) extending outwards, and in that the axial thrust bearing ( 84 ) is disposed facing the transverse front face ( 102 ) of the said plate portion ( 86 ). 5. Apparatus according to claim 4, wherein the turbine wheel ( 16 ) includes a generally radially oriented inner plate element ( 104 ), which is fixed to the plate portion ( 86 ) of the hub ( 30 ). 6. Apparatus according to claim 5 wherein the said plate element ( 104 ) of the turbine wheel ( 16 ) is adjacent to the transverse front face ( 102 ) of the plate portion ( 86 ) of the hub ( 30 ). 7. Apparatus according to claim 6, wherein the said plate element ( 104 ) of the turbine wheel ( 16 ) is interposed axially between the plate portion ( 86 ) of the hub ( 30 ) and the axial thrust bearing ( 84 ). 8. A pparatus according to claim 2, wherein the axial thrust bearing ( 84 ) includes a rear ring ( 110 ) interposed axially between the assembly having the turbine wheel ( 16 ) and hub ( 30 , 86 ) and the rolling elements. 9. Apparatus according to claim 8 wherein the rear ring ( 110 ) of the axial thrust bearing ( 84 ) is centered axially with respect to one of the plate portion ( 86 ) of the hub ( 30 ), and with respect to the plate element ( 104 ) of the turbine wheel ( 16 ). 10. Apparatus according to claim 9, wherein the rear ring ( 110 ) of the axial thrust bearing ( 84 ) is centered radially with respect to the inner periphery ( 112 ) of the plate element ( 104 ). 11. Apparatus according to claim 10, wherein the rear ring ( 110 ) of the axial thrust bearing ( 84 ) is centered radially with respect to the plate portion ( 86 ) of the hub ( 30 ). 12. Apparatus according to claim 3, wherein the front ring ( 108 ) of the axial thrust bearing ( 84 ) is centered radially with respect to the radially inner portion ( 54 ) of the piston ( 50 ). 13. Apparatus according to claim 1, wherein one ring ( 110 , 108 ) of the thrust bearing is coupled in rotation to one of the turbine wheel ( 16 , 104 ), the central sleeve, and the piston ( 50 ). 14. Apparatus according to claim 1, wherein the thrust bearing ( 84 ) is attached axially to one of the turbine wheel ( 16 , 104 , 30 ), the central sleeve ( 52 ), and the piston. 15. The hydrokinetic coupling apparatus according to claim 1, wherein said thrust bearing 84 is disposed adjacent to and radially within an inner peripheral edge 112 of said plate 104 . 16. A hydrokinetic coupling apparatus, for a motor vehicle, comprising:a casing ( 10 ) having a generally transversely oriented wall ( 36 ) adapted to be coupled in rotation to a driving shaft;a turbine wheel ( 16 ) including an internal plate element ( 104 ) and coupled in rotation to a hub ( 30 ) which is adapted to be coupled in rotation to a driven shaft;a lock-up clutch ( 14 ) interposed between the turbine wheel ( 16 ) and the transverse wall ( 36 ), and including, arranged axially between the turbine wheel ( 16 ) and the transverse wall ( 36 ), a generally transversely oriented piston ( 50 ), a radially inner portion ( 54 ) of which is mounted for sliding movement along a cylindrical outer surface ( 58 ) of a central sleeve which an annular transverse rear end face ( 64 ) thereof lies facing a front transverse face of an assembly including the turbine wheel ( 16 ) and hub ( 30 , 86 ); anda thrust bearing ( 84 ) interposed axially between the annular transverse rear end face 64 of the central sleeve and the front transverse face ( 102 ) to limit friction there between, a portion ( 88 ) of the thrust bearing extends radially outward beyond said rear end face ( 64 ) and being disposed facing a rear transverse face ( 51 ) of the radially inner portion ( 54 ) of the piston ( 50 ) so as to constitute an axial abutment defining the maximum rearward position of the piston ( 50 ) when the clutch is disengaged;wherein said thrust bearing 84 is disposed adjacent to and radially within an inner peripheral edge 112 of said plate 104 ; andwherein said thrust bearing 84 is directly coupled to said inner edge 122 and provided with complementary engaging teeth formed in the radially inner edge 112 of the plate and a radially outer portion of a rear ring 110 . 17. The hydrokinetic coupling apparatus according to claim 16, wherein said portion 88 is formed as a ring extension ( 88 ) of a front ring portion 108 of said thrust bearing, said thrust bearing being disposed radially inward of said radially inner portion ( 54 ) of the piston ( 50 ) while ring extension portion 88 extends radially outward beyond said radially inner portion ( 54 ) of the piston ( 50 ) thereby providing said axial abutment to engage piston 50 .
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