Contact device, electric motor and method for mutually contacting busbars in electric motor

The invention relates to a contact device (10) for contacting a first busbar (30) and a second busbar (31) in an electric motor for a motor vehicle, wherein the contact device (10) has a screw (20) and is constructed for partially guiding a first opening (32) which penetrates through the first busbar (30) and a second opening (33) that penetrates through the second busbar (31). The screw is a double-threaded screw (20) which has a first screw thread (21) and a second screw thread (22). A supporting sleeve (11) of the contact device (10) is arranged for contacting the first busbar (30) and is arranged at the double-threaded screw (20). The clamping block (12) of the contact device (10) is arranged below the supporting sleeve (11) in a direction that a third screw thread (13) faces the firstbusbar (30), wherein the third screw thread (13) and the first screw thread (21) or the second screw thread (22) are in engagement. 本发明涉及一种用于在机动车的电马达(50)中接触第一汇流条(30)与第二汇流条(31)的接触装置(10)，其中，接触装置(10)具有螺钉(20)且构造用于部分地引导穿过第一汇流条(30