LEVER HAVING SWINGABLE FULCRUM AND MECHANICAL DEVICE USING SAID LEVER DEVICE.

摘要

A swingable fulcrum type of lever provided with a lever member rotatably supported on a displaceable fulcrum. One end of the lever member (1) is connected to a force-application-point regulator (4) and the other end to a force-acting-point regulator (6). A fulcrum (2) includes a roller rolling in a fulcrum-guiding groove of a fulcrum-guiding member (3) and the lever member (1) is rotatably supported on the roller axis. Alternatively the fulcrum includes a slider inserted into the fulcrum-guiding groove, whereby the lever member (1) is supported rotatably with respect to the slider.