Omron Corporation

Tetsuo Shinkai

Tsukasa Yamashita

Yasuyuki Masui

Toshiyuki Kakimoto

Masayuki Noda

Hiroyuki Sagawa

Tatsuro Ishikawa

Atsushi Kamizasa

Kiyoji Inoue

An electromagnetic relay including an electromagnet block having a rod-shaped iron core, a coil wound around the rod-shaped iron core, and a spool interposed between the coil and iron core. A yoke having one end section extends to a section at a side of a magnet pole section of the iron core. An end section of the yoke is arranged so that the magnet pole section has a gap on a base side. A moving iron is pivotably supported by an elastic support of a hinge spring. The electromagnet block is magnetized wherein a section drawn in the moving iron is drawn to the magnet pole section and pivoted to drive a contact switching unit. The hinge spring includes an elastic contacting portion extending toward an opposite side to the elastic support. The moving iron is integrated with a card member that comes in contact with the elastic contacting portion.

Electromagnetic relay

An electromagnetic relay including a contact switching unit having a pair of contacts. An electromagnet block drives the contact switching unit to open and close the contacts. An arc-extinguishing member includes a connection member and permanent magnets. The connection member is formed by connecting, via a middle part, opposing walls arranged in a direction perpendicular to the touch/separation direction of the contacts. Permanent magnets are disposed on opposing sections of the opposing walls.

An electromagnetic relay including a contact switching unit formed by arranging at least two contact groups, in parallel with each other and perpendicular to the touch/separation direction of the contacts, each of the contact group includes a pair of contacts that can touch and separate; an electromagnet block that drives the contact switching unit to open and close the contacts; and an arc-extinguishing member comprising a connection member made from a magnetic material and formed by a connection of protrusions that respectively protrude from both sides of a middle part in the direction of the parallel arrangement of the contact groups and between the contact groups, and also comprising permanent magnets respectively disposed at least on the opposing positions of the protrusions located on both sides of the middle part.

To promptly extinguish an arc generated between contacts with a simple and inexpensive structure without negatively influencing the spring property of a movable contact piece. A contact switching mechanism includes a fixed contact piece with a fixed contact and a movable contact piece with a movable contact which faces the fixed contact in a contactable manner. At least either one of the contact pieces is provided with an extension which extends toward the contact of the remaining contact piece.

Contact switching mechanism and electromagnetic relay

Provided is a technology which has a simple structure, is easy to manufacture, and does not increase cost. A terminal member to be press-fitted into a terminal hole formed in a base, includes a press-fitted portion which is to be press-fitted in the terminal hole, and a terminal portion extending from the press-fitted portion and protruding from the base. The terminal portion is formed by folding a plate-like body such that folded portions overlap a planar portion. At least one of the folded portions has a cut-away portion extending from the base, respectively at an edge near the press-fitted portion. A sealing agent can be injected into the terminal hole via the cut-away portions.

Sealing structure of terminal member, electromagnetic relay, and method of manufacturing the same

The invention provides an improved heat seal structure for electronic devices. A heat seal structure comprises a base of synthetic resin formed integrally with an outwardly extending projection, with a gas vent running through the base and projection, the gas vent being sealed off by melting the projection, the improvement that the gas vent is configured generally in the shape of the letter V or Y bifurcating in the outward direction. In another embodiment, the projection has an annular extension disposed on the outward side of the base and adapted to be melted for a double seal effect. In another version of the structure, heat-sealing is performed with a sealing member or composition interposed in the gas vent. In still further embodiments, heat sealing is performed using a sealing member melting at a temperature below the melting point of the resin forming the base.

Growing community of inventors

Yamaga, Japan

Tetsuo Shinkai