Mitsubishi Denki Kabushiki Kaisha

Hiroaki Tazawa

Yuji Sako

Teijiro Mori

Yuichi Wada

Shigeharu Ootsuka

Shigeru Masuda

Shizutaka Nishizako

Hiroyuki Okado

Yuji Mizuno

Kosaku Ikeda

Shizutaka Nishisako

Isao Ando

An apparatus for mounting an electromagnetic unit on a frame includes a mounting recess at the bottom of the main body of the electromagnetic unit, a guide recess which is communicated with the mounting recess at one side thereof so that it is normal to the mounting recess, and a slidable member which is slidably inserted into the guide recess and normally biased toward the mounting recess by means of a spring supported by a projection disposed in the guide recess, the improvement comprising a stopper disposed in a hole formed in the slidable member, which opposes the spring bearing in the guide recess. The stopper in the hole also serves as a spring guide. The spring is disposed between the stopper in the hole and the length a of the slidable member determined by guide projection formed at the guide recess, the movement length b of the slidable member restricted by the stopper and the projection length c of the front end of the slidable member which projects into the mounting recess is preset so that a&gt;b&gt;c.

Apparatus for mounting electrical appliance on frame

Switch

A switch for making and breaking an electric current and having an arc-extinguishing mechanism. Said switch includes a fixed contact plate having a fixed contact thereon, a movable contact plate having a fixed contact adapted for movement to come into and go out of said fixed contact and an arc deflecting plate provided substantially parallel to said movement. Said arc deflecting plate is made of magnetic metal and is formed with a U-shaped portion in proximity to said fixed contact plate.

An electromagnetic contact having a fixed and a moveable contact which are brought into and out of disengagement by operation of an electromagnet. An arc runner substantially surrounding the contacts aide in extinguishing the arc created upon separation of the contacts. The overhanging plate of the arc runner has stoppers which engage the side plates thereby preventing the overhanging plate from bending inward and decreasing the effectiveness of the arc runner. The arc runner is also provided with lead parts to separate the arc and purge holes for passing the hot gasses generated.

Electromagnetic contactor means with improved arc runner

Growing community of inventors

Nagoya, Japan

Hiroaki Tazawa