IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0428278
(2003-05-02)
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발명자
/ 주소 |
- Cannon, Clint D.
- Elder, II, Raymond Lewis
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출원인 / 주소 |
- Automotive Transmission Specialists, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A torque converter is provided with an impeller and a cover, fixed to one another and configured for attachment to a drive member. A turbine is rotationally mounted between the impeller and the cover and is configured for attachment to a driven member. A lockup clutch is provided to lock the impelle
A torque converter is provided with an impeller and a cover, fixed to one another and configured for attachment to a drive member. A turbine is rotationally mounted between the impeller and the cover and is configured for attachment to a driven member. A lockup clutch is provided to lock the impeller and cover to the turbine when a fluid pressure applied to the lockup clutch increases above a torque converter lockup pressure. The lockup clutch may include a clutch-pack having rings that are splined to the piston or to the cover via tabs. The flanks of the tabs and their corresponding lugs may be substantially radial, or the flanks of the tabs or lugs may be parallel to one another. The cover may be formed from a base plate and a cylindrical wall piece. A plurality of lugs may be formed around the periphery of the base plate, and ones of the tabs may be splined thereto.
대표청구항
▼
1. A torque converter, comprising:a) an impeller and a cover, fixed to one another and configured for attachment to a drive member; the cover having a plurality of lugs on a surface thereof facing the impeller; b) a turbine, rotationally mounted between the impeller and the cover and configured for
1. A torque converter, comprising:a) an impeller and a cover, fixed to one another and configured for attachment to a drive member; the cover having a plurality of lugs on a surface thereof facing the impeller; b) a turbine, rotationally mounted between the impeller and the cover and configured for attachment to a driven member; and c) a lockup clutch, comprising: i) a piston, splined to and rotating with the turbine between the turbine and the cover; and ii) a clutch-pack comprising a first ring that is splined to and rotates with the piston, and a second ring that is positioned between the first ring and the piston; the second ring comprising a plurality of outwardly facing tabs splined to the plurality of lugs on the cover; at least some of the outwardly facing tabs and their corresponding lugs comprising flanks; with an orientation between radial and parallel, wherein the piston, rings and cover frictionally engage one another as a fluid pressure between the turbine and the piston increases above a torque converter lockup pressure. 2. The torque converter of claim 1, wherein at least some of the outwardly facing tabs and their corresponding lugs comprise radial flanks.3. The torque converter of claim 1, wherein the piston has a plurality of lugs on a surface thereof facing the second ring, and wherein the first ring has a plurality of inwardly facing tabs splined to the plurality of lugs on the piston.4. The torque converter of claim 3, wherein at least some of the inwardly facing tabs and their corresponding lugs comprise substantially radial flanks.5. The torque converter of claim 3, wherein at least some of the inwardly facing tabs and their corresponding lugs comprise radial flanks.6. The torque converter of claim 1, wherein the first ring comprises a friction lining on a side thereof adjacent the cover, wherein the second ring comprises friction linings on opposite sides thereof, and wherein the cover, piston and unlined side of the first ring each comprise clutch surfaces for friction linings of the first and second rings to bear against when the piston, rings and cover frictionally engage one another.7. The torque converter of claim 1, wherein:a) the cover comprises a base plate and a cylindrical wall piece that are fixed to one another; and b) the lugs on the cover are formed on the base plate. 8. The torque converter of claim 7, wherein the cover is formed of billet steel.9. A torque converter, comprising:a) an impeller and a cover, fixed to one another and configured for attachment to a drive member; b) a turbine, rotationally mounted between the impeller and the cover and configured for attachment to a driven member; and c) a lockup clutch, comprising: i) a piston, splined to and rotating with the turbine between the turbine and the cover, and having a plurality of lugs on a surface thereof facing the cover; and ii) a clutch-pack comprising a first ring that is splined to and rotates with the cover, and a second ring that is positioned between the first ring and the cover; the second ring comprising a plurality of inwardly facing tabs splined to the plurality of lugs on the piston; at least some of the inwardly facing tabs and their corresponding lugs comprising flanks; with an orientation between radial and parallel, wherein the piston, rings and cover frictionally engage one another as a fluid pressure between the turbine and the piston increases above a torque converter lockup pressure. 10. The torque converter of claim 9, wherein at least some of the inwardly facing tabs and their corresponding lugs comprise radial flanks.11. The torque converter of claim 9, wherein the first ring comprises friction linings on opposite sides thereof, wherein the second ring comprises a friction lining on a side thereof adjacent the cover, and wherein the piston, cover and unlined side of the first ring each comprise clutch surfaces for friction linings of the first and second rings to bear against when the piston, rings and cover frictionally engage one another.12. A torque converter, comprising:a) an impeller and a cover, fixed to one another and configured for attachment to a drive member; the cover having a plurality of lugs on a surface thereof facing the impeller; b) a turbine, rotationally mounted between the impeller and the cover and configured for attachment to a driven member; and c) a lockup clutch, comprising: i) a piston, splined to and rotating with the turbine between the turbine and the cover; and ii) a clutch-pack comprising a first ring that is splined to and rotates with the piston, and a second ring that is positioned between the first ring and the piston; the second ring comprising a plurality of outwardly facing tabs splined to the plurality of lugs on the cover; at least some of the outwardly facing tabs comprising parallel flanks, and flanks of the lugs corresponding thereto following contours of the tabs; wherein the piston, rings and cover frictionally engage one another as a fluid pressure between the turbine and the piston increases above a torque converter lockup pressure. 13. The torque converter of claim 12, wherein the outwardly facing tabs comprising parallel flanks are square.14. The torque converter of claim 12, wherein:a) the piston has a plurality of lugs on a surface thereof facing the second ring; b) the first ring has a plurality of inwardly facing tabs splined to the plurality of lugs on the piston; and c) at least some of the inwardly facing tabs comprise parallel flanks, and flanks of the lugs corresponding thereto follow countours of the tabs. 15. The torque converter of claim 14, wherein the inwardly facing tabs comprising parallel flanks are square.16. The torque converter of claim 12, wherein the first ring comprises a friction lining on a side thereof adjacent the cover, wherein the second ring comprises friction linings on opposite sides thereof, and wherein the cover, piston and unlined side of the first ring each comprise clutch surfaces for friction linings of the first and second rings to bear against when the piston, rings and cover frictionally engage one another.17. The torque converter of claim 12, wherein:a) the cover comprises a base plate and a cylindrical wall piece that are fixed to one another; and b) the lugs on the cover are formed on the base plate. 18. The torque converter of claim 17, wherein the cover is formed of billet steel.19. A torque converter, comprising:a) an impeller and a cover, fixed to one another and configured for attachment to a drive member; b) a turbine, rotationally mounted between the impeller and the cover and configured for attachment to a driven member; and c) a lockup clutch, comprising: i) a piston, splined to and rotating with the turbine between the turbine and the cover, and having a plurality of lugs on a surface thereof facing the cover; and ii) a clutch-pack comprising a first ring that is splined to and rotates with the cover, and a second ring that is positioned between the first ring and the cover; the second ring comprising a plurality of inwardly facing tabs splined to the plurality of lugs on the piston; at least some of the inwardly facing tabs comprising parallel flanks, and flanks of the lugs corresponding thereto following contours of the tabs; wherein the piston, rings and cover frictionally engage one another as a fluid pressure between the turbine and the piston increases above a torque converter lockup pressure. 20. The torque converter of claim 19, wherein the inwardly facing tabs comprising parallel flanks are square.21. The torque converter of claim 19, wherein the first ring comprises friction linings on opposite sides thereof, wherein the second ring comprises a friction lining on a side thereof adjacent the cover, and wherein the piston, cover and unlined side of the first ring each comprise clutch surfaces for friction linings of the first and second rings to bear against when the piston, rings and cover frictionally engage one another.
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