SWITCHING DEVICE

PURPOSE:To decrease the number of component parts constituting a link mechanism to a great extent by forming each lines from a single link plate in a switching device. CONSTITUTION:Pins 41, 42 are inserted from one side at each end of a link plate 40 and welded and the first link member 43 is provided, wherein the pin 41 penetrates the tip of a lever 17 from the right. Another pin 45 is inserted through only the top of a link plate 44 and welded and the second link member 46 is provided, and a fixing pin 25 is allowed to penetrate the bottom of the link plate 44, and the pins 42, 45 are protruded to the left. These pins 42, 45 are allowed to penetrate the top and bottom of a link plate 48 as a third link member through a roller 47, and the pins 42, 45 are coupled. A nut 49 is screwed on the tips of pins 41, 42, 45 and fixing pin 25, and bearing 50 is provided between the lever 17 and pin 41, between link plate 48 and pins 42, 45, and between link plate 44 and fixing pin 25. Accordingly the number of component parts of the link mechanism of a switching device is decreased, while the assembling works can be facilitated as well as the man-hours for assembly be reduced.