| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a handle return device capable of applying suitable return force corresponding to styles of rotating operation with simple constitution.SOLUTION: A handle return device 31 includes input members (28A, 28B) which rotate associatively with an operation handle, and a spring member 30 where a plurality of spring parts 55a, 55b having different spring force and extend around a support axis Q2 of the input members are formed in one body. The spring parts 55a, 55b energize the input members to generate return force for returning the operation handle to its neutral position as both spring ends SP1, SP2 which are apart from each other in their peripheral directions elastically deform by having their one-end sides engaged with the input members and the other-end sides engaged with an engagement part 47 of a bracket (23B) on the basis of rotating operation of the operation handle. Then the handle return device 31 is so configured that the spring parts 55a, 55b are changed which generate the return force according to styles of rotating operation thereof.</p> |
