Load support mechanism

Abstract

To realize a mechanism that can support an article at a desired position in such a way as to be able to move the article, with a thin, simple configuration. A load support mechanismincludes a fixed support section, which includes a fixed cam; a movable support section, which receives a load and can move vertically; a horizontal cam groove, which is provided in the movable support section; a cam follower member, which can move horizontally along the cam groove; a first spring, which is mounted between the fixed support section and the movable support section to support a load; and a second spring, which pushes the cam follower member horizontally and presses the cam follower member against a fixed cam surfaceof the fixed cam. A reaction force of the fixed cam against the cam follower contains a vertical component depending on a height position of the movable support section, and the vertical component assists or reduces the spring's force to push up the load. A cam shape of the fixed cam surface is provided in such a way that the load acting around the cam follower, the spring forces of the first and second springs, and the reaction force applied from the fixed cam are balanced against each other.