Multiple disk clutch

Abstract

The present invention relates to a multi-disc clutch for the transfer of torque between a first clutch part and a second clutch part, having at least one first and at least one second disc that engage one another and that are movable parallel to a rotational axis of the multi-disc clutch, and having a reset device for the reciprocal ventilation of adjacent discs. The first clutch part is connected in a rotationally secure fashion to the first disc and the second clutch part is connected in a rotationally secure fashion to the second disc. The reset device has at least two reset elements that are disposed eccentrically relative to the rotational axis and distributed in the circumferential direction.

1 . A multi-disc clutch for the transfer of torque between a first clutch part and a second clutch part, comprising:
 at least one first and at least one second disc that engage one another and that are movable parallel to a rotational axis of the multi-disc clutches; and   a reset device for the reciprocal release of adjacent discs, with the first clutch part being connected in a rotationally secure fashion to the first disc and with the second clutch part being connected in a rotationally secure fashion to the second disc,   wherein the reset device has at least two reset elements disposed eccentrically relative to the rotational axis and distributed in a circumferential direction.   
     
     
         2 . The multi-disc clutch according to  claim 1 , wherein the first disc has at least one respective recess through which at least one of the reset elements extends in the axial direction. 
     
     
         3 . The multi-disc clutch according to  claim 1 , wherein the reset elements are disposed radially inside the inner diameter of the second disc. 
     
     
         4 . The multi-disc clutch according to  claim 1 , wherein the first disc is an inner disc. 
     
     
         5 . The multi-disc clutch according to  claim 1 , wherein the first clutch part is a shaft or a coupling sleeve connected to the shaft in a rotationally secure fashion, with the first disc extending radially essentially up to the shaft. 
     
     
         5 . The multi-disc clutch according to  claim 1 , wherein the shaft is a through drive of a transfer case. 
     
     
         7 . The multi-disc clutch according to  claim 1 , wherein a retaining device is provided in order to secure the reset elements in the radial direction of the multi-disc clutch. 
     
     
         8 . The multi-disc clutch according to  claim 7 , wherein the retaining device has a pin for each reset element extending in the axial direction that carries the respective reset element. 
     
     
         9 . The multi-disc clutch according to  claim 8 , wherein the pin is supported in the axial direction on a first component of the clutch and is disposed in an axially movable fashion relative to a second component of the clutch, with the components being disposed in a rotationally secure fashion relative to one another on axially opposite sides of the disc stack formed by the first and second discs. 
     
     
         10 . The multi-disc clutch according to  claim 1 , wherein a distributor insert for distributing lubricant is provided in a radial interior of the multi-disc clutch that has at least one conduit-like extension that extends in the axial direction of the multi-disc clutch. 
     
     
         11 . The multi-disc clutch according to  claim 10 , wherein an extension is allocated to at least one, in particular to each, reset element, with the extension at least partially surrounding the reset element in the circumferential direction. 
     
     
         12 . The multi-disc clutch according to  claim 11 , wherein the extension has at least one opening on its circumferential surface through which lubricant is able to escape in the radial direction. 
     
     
         13 . The multi-disc clutch according to  claim 11 , wherein the distributor insert forms a lubricant chamber that is connected to the at least one extension and that is disposed offset in the axial direction relative to the discs. 
     
     
         14 . The multi-disc clutch according to  claim 11 , wherein the distributor insert includes an annular plate that extends in a plane essentially perpendicular to the rotational axis and that is connected to the extension, in particular that is designed as one piece with the extension. 
     
     
         15 . The multi-disc clutch according to  claim 14 , wherein the annular plate has an edge section on its outer circumference extending in the axial direction for the purpose of forming a lubricant chamber with a component of the multi-disc clutch. 
     
     
         16 . The multi-disc clutch according to  claim 13  wherein the lubricant chamber is connected to a lubricant conduit through which lubricant may be conveyed to the lubricant chamber, with the lubricant conduit having an oil supply device. 
     
     
         17 . The multi-disc clutch according to  claim 16 , wherein the oil supply device is a ring element that is conically formed in the axial direction. 
     
     
         18 . The multi-disc clutch according to  claim 1 , wherein a retaining device is provided for the purpose of securing the reset elements in the radial direction of the multi-disc clutch, with the retaining device comprising two fixing elements for each reset element that are formed on different components of the clutch that are disposed in a rotationally secured fashion relative to one another, with the components being disposed on axially opposite sides of the disc stack formed by the first and second discs. 
     
     
         19 . The multi-disc clutch according to  claim 18 , wherein the fixing elements are recesses and/or pins. 
     
     
         20 . The multi-disc clutch according to  claim 18 , wherein characterized in that the distributor insert and the retaining device form one component, in particular a component designed as one piece. 
     
     
         21 . The multi-disc clutch according to  claim 18 , wherein the distributor insert and/or the retaining device are made essentially of plastic. 
     
     
         22 . The multi-disc clutch according to  claim 18 , wherein the distributor insert and/or the retaining device are attached in a rotationally secure fashion to a component that is movable in the axial direction for the purpose of activating the clutch. 
     
     
         23 . The multi-disc clutch according to  claim 1 , wherein the reset elements are elastic elements, in particular coil springs. 
     
     
         24 . A transfer case having a multi-disc clutch according to  claim 1 .