MULTI-LINK DEVICE AND MULTI-LINK SYSTEM HAVING THE SAME

摘要

PURPOSE: A multi-joint device and a multi-joint system with the same are provided to simplify structure without enlarging the size by appropriately arranging components in the inner space of a link. CONSTITUTION: A multi-joint device comprises an operating groove(31), a friction surface, multiple pistons(41), actuating fluid, and a fluid passage unit. The operating groove is formed at one end of a link(21). The first friction surface is formed at the other end of the link. Multiple pistons reciprocate linearly while sealing an operating groove. The pistons have a second friction surface(45) corresponding to the first friction surface. The actuating fluid is contained between an inner link and the piston of the operating groove to linearly reciprocate the piston by changing the inner pressure of the operating groove.