| 摘要 |
PROBLEM TO BE SOLVED: To suppress a decrease in durability by eliminating application of excessive load torque to a contact slide part.SOLUTION: A drive transmission device includes: a first coupling member which is coupled to a driving shaft 65; a second coupling member which is coupled to a driven shaft; an intermediate coupling which is arranged radially movably for the first and second coupling members; and rolling members 64 which are arranged between the first coupling member and the intermediate coupling and between the second coupling member and the intermediate coupling, and brought into free rolling contact with respective contact surfaces of the first and second couling members and the intermediate coupling. The rolling members are thus brought into free rolling contact with the respective contact surfaces of the first and second couling members and the intermediate coupling, so no large frictional load is placed on the first and second coupling members and intermediate coupling, thereby suppressing deformation of the first and second coupling members and intermediate coupling. |
