Coupling, in particular for coupling a high-pressure pump with a gear pump

摘要

A coupling (1), which is used in particular to couple a high-pressure pump with a gear pump, comprises a first coupling piece (2), which has a double face (4), and a second coupling piece (3), which has a coupling slot (5), in which the double surface (4) of the first coupling piece (2) at least partially engages. Here, in a pressure area (17), in which the two-face (4) of the first coupling piece (2) for transmitting a torque between the first coupling piece (2) and the second coupling piece (3) is an inside (19) of the coupling slot (5) of the second coupling piece (3) is applied, the inner side (19) of the coupling slot (5) designed with a convex contour (20). In this way, a contact pressure between the coupling pieces (2, 3) can be reduced through an adapted contact geometry.