Fuji Electric Fa Components & Systems Co., Ltd.

Jfe Civil Engineering & Construction Corporation

Yuya Sakurai

Yasuhiro Naka

Hideo Adachi

Yuki Tashima

Kouetsu Takaya

Koujun Konishi

Mitsuya Itou

Yuji Shiba

Kazuaki Miyagawa

Keisuke Shiota

Hiroyuki Imashio

Hitoshi Naito

Yasuke Imano

Electromagnetic contactor

There is provided an electromagnetic contactor that ensures appropriately preventing a foreign matter from invading an auxiliary contact mechanism housing chamber from a main contact mechanism housing chamber via a through-hole on a partition wall; and a foreign matter from invading the main contact mechanism housing chamber from the auxiliary contact mechanism housing chamber via the through-hole on the partition wall. With an electromagnetic contactor (), a main contact mechanism housing chamber (A) and an auxiliary contact mechanism housing chamber (B) are partitioned by a partition wall (). The partition wall () has a through-hole () through which a coupling shaft () is inserted. A foreign matter invasion prevention mechanism () is provided at a peripheral area of the through-hole ().

The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.

Contact device and electromagnetic contactor using same

A bridge pier structure includes a damper having damping characteristics, a substructure joined with a lower end portion of the damper, and a pillar member provided upright on the substructure, a side surface of the pillar member being joined with an upper end portion of the damper. The damper is substantially parallel to the side surface of the pillar member.

Bridge pier structure

Growing community of inventors

Kounosu, Japan

Yuya Sakurai