Constant velocity joint and image forming apparatus

摘要

Example embodiments relate to a constant velocity joint having an outer ring including an annular space with an open end, plural outer grooves axially extending in an outer wall of the annular space and being equally spaced from each other in a circumferential direction, and plural inner grooves axially extending in an inner wall of the annular space and facing the respective outer grooves, and a cage configured to hold balls that slide along the inner walls and the outer walls. The outer ring and/or the cage may be made of a synthetic resin. A drive force of one of the cage and the outer ring may be transmitted to the other one of the cage and the outer ring when part of the cage may be inserted in the annular space and the balls held by the cage may be engaged in the inner grooves and the outer grooves.