Operation handle mechanism and load support mechanism

摘要

Provided is an operation handle mechanism with which a handle can be conveniently operated to move a movable section, thereby ensuring smooth operation and movement at any time regardless of an operation position of the handle. An operation handle section 121 includes a handle lever 67, which is used to operate movement of a support frame section 23 capable of moving up and down, and left and right transmission rods 123a and 123b, which are joined to the handle lever. The transmission rods can only move a predetermined distance in a movement direction thereof relative to the support frame section, and start to move together with the support frame section after going beyond that distance. The left and right transmission rods are connected via rack sections 140a and 140b of the transmission rods and a gear train 134a, 134b, 135a, and 135b meshing with the rack sections in such a way as to enable transmission of part of an operation force coming from the handle lever from one transmission rod to the other and thereby allow the two transmission rods to simultaneously move only the same distance.

主权项

1. An operation handle mechanism comprising:
a movable section that can move in a predetermined direction; and an operation section that includes a handle used to operate movement of the movable section, a first transmission member connected to the handle, and a second transmission member arranged facing the first transmission member and connected to the handle, wherein the first and second transmission members are provided in such a way as to be able to only move a predetermined distance in a movement direction thereof relative to the movable section and to start to move together with the movable section after going beyond the predetermined distance, and the movable section includes a connection member that connects the first and second transmission members in such a way as to transmit part of an operation force of the handle between the first and second transmission members in response to movement of the first or second transmission member at a time when the handle is operated.