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US 2020/0208683 A1Published application
Clutch and Method for the Production Thereof
AssigneeKwd Kupplungswerk Dresden GmbH
InventorsMartin Krondorf, Thomas Hähnel
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AssigneeKwd Kupplungswerk Dresden GmbH
InventorsMartin Krondorf, Thomas Hähnel
Estimating the term…
The invention relates to the field of mechanical engineering and relates to a clutch as can be used, for example, in vehicle drives, in particular rail vehicle drives. It is the problem of the present invention to specify a clutch, by way of which the electric contact between the drive side and the output side of the clutch is prevented reliably, and to specify a simple and inexpensive method for the production thereof. The problem is solved by way of a clutch, at least consisting of a clutch half on the drive side and a clutch half on the output side, wherein at least one clutch half has at least two hollow cylinders which are arranged above one another and are arranged in a bore of the clutch half, wherein the second hollow cylinder consists of electrically insulating material, and wherein at least the first hollow cylinder, at least on its outer circumferential surface, and at least the inner circumferential surface of the bore
Coupling, comprised of at least one coupling half on the drive side and one coupling half on the output side, wherein at least one coupling half, starting from the drive shaft or output shaft and connected to it by form fit, force locking, and/or material bonding, includes at least two hollow cylinders which are arranged above one another and joined together by form fit, force locking, and/or material bonding, which are situated in a bore of the coupling half, which is arranged substantially parallel to the axis of rotation of the drive shaft or output shaft in the coupling half, wherein the first hollow cylinder and the coupling half includes electrically conductive material at least in the region of the bore and the second hollow cylinder includes electrically insulating material, and wherein at least the first hollow cylinder has at least partially a knurling at least on its outer lateral surface on the side facing away from the drive shaft or output shaft and at least the inner lateral surface of the bore has at least partially a knurling in the coupling half, and wherein the second hollow cylinder has a substantially complete and at least form fitting contact at least over the entire circumference with the outer lateral surface of the first hollow cylinder and the inner lateral surface of the bore in the coupling half.
Method for producing a coupling, in which at least two coupling halves are produced and at least one coupling half is made at least from two hollow cylinders arranged above one another, wherein at first the first, inner hollow cylinder and the coupling half are produced from an electrically conductive material, then a bore is introduced into the coupling half, realizing a substantially parallel arrangement of the coupling half to the axis of rotation of the drive shaft or output shaft, at least the outer lateral surface of the first, inner hollow cylinder and the inner lateral surface of the bore in the coupling half are provided with a knurling, and then the second, middle hollow cylinder made of an electrically insulating material is introduced into the space between the inner hollow cylinder and the bore in the coupling half with substantially complete and at least form fitting contact.
Dependencies are inferred from the claim text.