TRANSMISSION MECHANISM, RAISING DEVICE, AND INSERTION APPARATUS

摘要

A transmission mechanism includes a mobile member, and an adjustment unit which is coupled to the mobile member and which changes in an adjustment amount in a longitudinal axis C direction. The transmission mechanism further includes a pulling and pressing member which is coupled to the raising stand and the adjustment unit. The transmission mechanism further includes a regulation portion which regulates the adjustment amount of the adjustment unit when a raising operation portion is operated and when a tension is applied to the adjustment unit.

主权项

1. A transmission mechanism which is coupled to a raising stand that raises and a raising operation portion to operate a raise of the raising stand and which transmits an operational force of the raising operation portion to the raising stand, the transmission mechanism comprising:
a mobile member which moves forward and backward along an axial direction of the transmission mechanism by an operation of the raising operation portion; an adjustment unit which is coupled to the mobile member and thus moves forward and backward along the axial direction together with the mobile member and which comprises an expansion and contraction member that changes in length in the axial direction; a pulling and pressing member which is coupled to the raising stand and the adjustment unit in a state where tension adjusted by the change of the length of the expansion and contraction member is acting thereon and which pulls or presses the raising stand; a regulation surface portion which contacts the adjustment unit; and a support portion which is provided in contact with the mobile member and which moves the regulation surface portion forward and backward together with the mobile member to support the regulation surface portion at a position to regulate the change of the length of the expansion and contraction member when the raising operation portion is operated and when tension is applied to the adjustment unit and the length of the expansion and contraction member changes.