Panasonic Intellectual Property Management Co., Ltd.

Machiko Nishiyama

Yoshimasa Kato

Akihiro Okuda

Atsushi Nakahata

Hironori Hounoki

Yoshihide Asada

Izumi Fujita

An electromagnetic relay includes: a housing including a base and a case that opens downward and is provided on the base, the housing having an internal space surrounded by the base and the case; a main fixed contact; a main moving contact that comes into contact with and separates from the main fixed contact; an auxiliary fixed contact; an auxiliary moving contact that comes into contact with and separates from the auxiliary fixed contact; a coil provided in the housing such that a central axis extends in a vertical direction; an iron core disposed so as to be surrounded by the coil; a yoke disposed around the coil; an armature that is disposed to face an upper end of the iron core and swings in response to excitation/non-excitation of the coil; a movable part provided with the main moving contact and configured to move in response to swinging of the armature; and a partition wall that divides the internal space of the housing into a first space and a second space. The main fixed contact and the main moving contact are disposed in the first space, and the auxiliary fixed contact and the auxiliary moving contact are disposed in the second space.

Electromagnetic relay

A main fixed contact and a main moving contact are disposed on the front side of a coil, and an auxiliary fixed contact and an auxiliary moving contact are arranged above the coil in a housing. An auxiliary contact terminal includes an upper piece extending above the coil and provided with the auxiliary fixed contact or the auxiliary moving contact, a side piece connected to the upper piece and extending downward from the upper piece and disposed on a side of the coil, and a connecting piece connected to the side piece and provided so as to protrude outward from the housing. The side piece is press-fitted into a press-fitting portion formed in a coil bobbin, and the press-fitting portion includes an opening into which the side piece is press-fitted and a restriction wall formed around the opening so as to face the side piece.

The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.

Electromagnetic relay and electromagnetic device

An electromagnetic relay includes an armature, and a movable body configured to move in association with a swing of the armature. The armature includes a support portion opposed to a leg portion of an iron core, a magnetic pole opposed to another leg portion of the iron core, and an arm portion extending to connect the support portion and the magnetic pole. A movable body is attached to the arm portion and provided with a pressure projection for moving movable contacts. The pressure projection is located on a segment connecting the center of gravity of the support portion and the center of gravity of the magnetic pole.

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Mie, Japan

Machiko Nishiyama