Conductive slip ring

A conductive slip ring comprising:

• a first terminal group comprising:
• a first terminal having a first contact portion and a first extension portion electrically connected to the first contact portion, the first contact portion being provided with a first annular contact surface;
• a second terminal having a second contact portion and a second extension portion electrically connected to the second contact portion, the second contact portion being provided with a second annular contact surface;
• and
• a molded part insert-molded with the first terminal and the second terminal, the molded part comprising an isolation portion which separates the first contact portion and the second contact portion in an axial direction of the conductive slip ring;
• a second terminal group comprising:
• a third terminal electrically contacting with the first annular contact surface of the first terminal;
• and
• a fourth terminal electrically contacting with the second annular contact surface of the second terminal;
• a first connection port electrically connected with the first extension portion and the second extension portion;
• and
• a second connection port electrically connected with the third terminal and the fourth terminal;
• wherein
• the first connection port is rotatable with respect to the second connection port while keeping the first terminal and the second terminal in rotating contact with the third terminal and the fourth terminal, respectively;
• the molded part is provided with a support portion, the first extension portion has a first tail portion exposed on the support portion, and the second extension portion comprises a second tail portion exposed on the support portion;
• the conductive slip ring further comprises a protective sleeve sleeved on the support portion to at least partially shield the first tail portion and the second tail.

A conductive slip ring comprising:

• a first terminal group comprising:
• a first terminal having a first contact portion and a first extension portion electrically connected to the first contact portion, the first contact portion being provided with a first annular contact surface;
• a second terminal having a second contact portion and a second extension portion electrically connected to the second contact portion, the second contact portion being provided with a second annular contact surface;
• and
• a molded part insert-molded with the first terminal and the second terminal, the molded part comprising an isolation portion which separates the first contact portion and the second contact portion in an axial direction of the conductive slip ring;
• a second terminal group comprising:
• a third terminal electrically contacting with the first annular contact surface of the first terminal;
• and
• a fourth terminal electrically contacting with the second annular contact surface of the second terminal;
• a first connection port electrically connected with the first extension portion and the second extension portion;
• and
• a second connection port electrically connected with the third terminal and the fourth terminal;
• wherein
• the first connection port is rotatable with respect to the second connection port while keeping the first terminal and the second terminal in rotating contact with the third terminal and the fourth terminal, respectively;
• the molded part is provided with a pair of bearing seats in which the first terminal and the second terminal are located, and the conductive slip ring comprises a pair of bearings mounted on the bearing seats, each bearing comprises an outer ring portion and an inner ring portion which is rotatable relative to the outer ring portion, the inner ring portions are fixed to the bearing seats;
• the conductive slip ring comprises a housing to fix the third terminal and the fourth terminal, the outer ring portions are fixed to the housing;
• the second connection port is provided with a third cable welded to the third terminal and a fourth cable welded to the fourth terminal;
• the conductive slip ring comprises a first protection member covering a portion where the third terminal and the third cable are welded, and a second protection member covering a portion where the fourth terminal and the fourth cable are welded.