Switch gear and rubber joints

Abstract

The present invention provides a switchgear and a rubber joint capable of suppressing foreign matter from reaching contacts. The switch device is configured to include: a base plate having at least one fixed contact, and an inflow and outflow portion provided with at least one through hole through which fluid passes; and a rubber joint covering the base plate, the rubber joint having: a movable contact part, which is at least one movable part arranged opposite to each of at least one fixed contact, and elastically deforms the movable contact corresponding to each of the fixed contacts so as to be in contact with and separated from each other; the venting cavity as the entrance and exit part part, which is arranged opposite to the inflow and outflow part, and forms a space between it and the inflow and outflow part; the air groove as the flow path part, which constitutes a flow path connecting the venting cavity part and at least one movable contact part; and at least one cavity portion having a space larger than a space occupied by a representative length of the air groove at a part of the air groove and having strength to maintain the shape of the space thereof.

Description

technical field [0001] The invention relates to switchgear and rubber joints. Background technique [0002] The conventional switch device described in Patent Document 1 is a rubber plate covering one surface side of a substrate, and includes a first rubber dome, an air storage chamber, a second rubber dome, a first air passage, and a second air passage. [0003] The first rubber dome is a dome-shaped portion that covers the fixed contact and has a movable contact inside. An air storage chamber covers one end of the terminal. The second rubber dome is a dome-shaped portion located between the first rubber dome and the air storage chamber. The first air passage connects the inside of the first rubber dome with the inside of the second rubber dome. The second air passage connects the inside of the second rubber dome with the inside of the air storage chamber. The first rubber dome and the second rubber dome are configured to be pressed and operated by an operating member. ...

AI Technical Summary

Problems solved by technology

Then, the foreign matter that may have entered between the rubber joint and the base plate does not flow toward the second rubber dome and reaches the second air passage, or the foreign matter that enters the space between the second rubber dome and the base plate passes through the second rubber dome. Top out

Images