Electromagnetic relay

Patent metadata

Field	Value
Publication number	US-10325741-B2
Application number	US-201715409632-A
Country	US
Kind code	B2
Filing date	Jan 19, 2017
Priority date	Feb 4, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

An electromagnetic relay including: a relay body that includes a first terminal; a base that includes a second terminal which contacts the first terminal and supports the relay body; an outer cover that covers the relay body; and an elastic member that is attached between the relay body and the outer cover.

First claim

What is claimed is:

1. An elechtromagnetic relay comprising:
a relay body that includes a first terminal;
a base that includes a second terminal which contacts the first terminal and supports the relay body;
an outer cover that covers the relay body; and
plate springs that are attached between the relay body and the outer cover and generate a force that presses the first terminal against the second terminal,
wherein the first terminal includes a first flat portion in parallel with a bottom surface of the relay body, and the second terminal includes a second flat portion that is in parallel with the bottom surface of the relay body, contacts the first flat portion and supports the relay body, and
wherein the plate springs press on surfaces of the relay body other than a surface thereof on which the first terminal is provided.

2. The electromagnetic relay as claimed in claim 1 , wherein
both ends of each of the plate springs include first engaging portions which engage with one of an inner wall of the outer cover and a housing of the relay body, and
a middle portion of each of the plate springs includes a second engaging portion which engages with the other of the inner wall of the outer cover and the housing of the relay body.

3. The electromagnetic relay as claimed in claim 1 , wherein
an inner wall of the outer cover includes receiving portions for attaching the elastic member,
both ends of the elastic member include bending portions to be fitted into the receiving portions,
a middle portion of the elastic member includes a third flat portion which curves so as to contact a housing of the relay body when the elastic member is attached to the receiving portions, and
the housing of the relay body includes a fitted portion into the curved third flat portion is fitted.

4. The electromagnetic relay as claimed in claim 1 , wherein
the outer cover includes a through-hole at a surface thereof, and the elastic member is inserted from the through-hole.

5. The electromagnetic relay as claimed in claim 1 , wherein
the elastic member includes a waveform portion that contacts a housing of the relay body and an inner wall of the outer cover, a fourth flat portion that has a shape along the housing of the relay body, and a projection that engages with a groove formed on the housing of the relay body.

6. An electromagnetic relay, comprising:
a relay body that includes a first end, a second end, sides therebetween and a first terminal extending from the second end and having a surface;
a base that includes a second terminal with a surface which directly contacts the surface of the first terminal and supports the relay body;
an outer cover that covers the relay body and includes a first end corresponding to the first end of the relay body, an open second end, opposite the first end, that receives the base, and sides between the first and second ends of the outer cover at the sides of the relay body; and
plate springs that are attached to and extend between surfaces of the relay body, except the second end, and surfaces of the outer cover, except the open second end, to generate a force that presses the surface of the first terminal directly against the surface of the second terminal.

7. The electromagnetic relay as claimed in claim 6 , wherein
both ends of each of the plate springs include first engaging portions which engage with one of an inner wall of the outer cover and an outer wall of the relay body, and
an intermediate portion of each of the plate springs includes at least one second engaging portion which engages with the other of the inner wall of the outer cover outer wall of the relay body.

Assignees

• Fujitsu Component Ltd

Inventors

• Liang Chuqi
• Kaneko Masahiro
• Yatsu Nobuo
• Tokuhara Yayoi
• Takahashi Kohei
• Koshimura Katsuaki

Classifications

• H01H2009/0278

  Casings containing special noise reduction means, e.g. elastic foam between inner and outer casing · CPC title

• H01H50/047 Primary

  Details concerning mounting a relays · CPC title

• H01H50/14

  Terminal arrangements {(for coils H01H50/443)} · CPC title