Electromagnetic relay for simplifying attachment of a counterpart member

Patent metadata

Field	Value
Publication number	US-10388478-B2
Application number	US-201415026434-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Oct 4, 2013
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

An electromagnetic relay includes a contact device including a fixed terminal with a fixed contact formed, and a movable contactor with a movable contact formed to come into contact with and separate from the fixed contact. The contact device is stored in a housing. The electromagnetic relay further includes a terminal portion including a first terminal portion having a screw portion formed thereon, and a second terminal portion connected to the first terminal portion. The first terminal portion and the second terminal portion are configured to be electrically connected to each other at least in a state where a counterpart member connected to the terminal portion. A rotation restriction portion for restricting relative rotation between the first terminal portion and the second terminal portion is provided on at least one of the first terminal portion or the second terminal portion.

First claim

The invention claimed is:

1. An electromagnetic relay comprising:
a contact device including a fixed terminal with a fixed contact formed, and a movable contactor with a movable contact formed to come into contact with and separate from the fixed contact;
a housing storing the contact device therein; and
a terminal portion including a screw portion directed outward from the housing and exposed from the housing, the terminal portion is connected to the contact device, while a counterpart member is connected to the terminal portion,
wherein the terminal portion includes a first terminal portion where the screw portion is formed, and a second terminal portion connected to the first terminal portion, the terminal portion is electrically connected to the movable contact and the fixed contact in a state where the movable contact comes in contact with the fixed contact,
the first terminal portion and the second terminal portion are electrically connected to each other at least in a state where the counterpart member is connected to the terminal portion,
a rotation restriction portion configured to restrict relative rotation between the first terminal portion and the second terminal portion is provided on at least one of the first terminal portion and the second terminal portion,
the first terminal portion and the second terminal portion are capable of independent movement relative to one another,
the first terminal portion includes a head portion and a shaft portion connected to the head portion, and the shaft portion is provided with the screw portion, the second terminal portion includes a support portion in which an insertion hole through which the shaft portion is inserted is formed, and
the head portion of the first terminal portion is disposed between the housing and the support portion of the second terminal portion.

2. The electromagnetic relay according to claim 1 , wherein the rotation restriction portion is at least partially made of a metal material.

3. The electromagnetic relay according to claim 1 , wherein the first terminal portion includes a bolt having a polygonal head portion, and the rotation restriction portion has a wall portion provided on the second terminal portion and engaged with the head portion.

4. The electromagnetic relay according to claim 1 , wherein when the first terminal portion and the second terminal portion are electrically connected to each other, a contact portion of the first terminal portion and a contact portion of the second terminal portion come into contact with each other, and
a rotation restriction assisting member configured to assist restriction of relative rotation between the first terminal portion and the second terminal portion is provided between the contact portions of the first and second terminal portions.

5. The electromagnetic relay according to claim 1 , wherein in a state where the counterpart member is not connected to the terminal portion, the first terminal portion is supported by the second terminal portion in a state that the first terminal portion is independently movable relative to the second terminal portion.

6. The electromagnetic relay according to claim 1 , wherein in a state where the counterpart member is not connected to the terminal portion, the second terminal portion is fixed to the housing.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Nishimura Tsukasa
• Koeda Ryosuke

Classifications

• H01H50/02

  Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B1/01, H04Q1/08, H05K) · CPC title

• H01H50/14 Primary

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