A switch includes a first fixed contactor, a second fixed contactor, a movable contactor, permanent magnets, and a yoke. The movable contactor extends in a first direction, includes a first movable contact at a first end portion, and is provided to be contactable with and separatable from the first fixed contactor in a second direction. The permanent magnets are arranged to sandwich the movable contactor, and to cause their surfaces facing the movable contactor in the third direction of the movable contactor to have the same polarity. The yoke surrounds a periphery of the movable contactor in the first direction and the third direction and is connected to surfaces of the permanent magnets on opposite sides of their surfaces facing the movable contactor. The yoke includes a protrusion protruding toward the movable contactor at a position facing the first end portion of the movable contactor in the first direction.

A switch includes a first fixed contactor, a second fixed contactor, a movable contactor, permanent magnets, and a yoke. The movable contactor extends in a first direction, includes a first movable contact at a first end portion, and is provided to be contactable with and separatable from the first fixed contactor in a second direction. The permanent magnets are arranged to sandwich the movable contactor, and to cause their surfaces facing the movable contactor in the third direction of the movable contactor to have the same polarity. The yoke surrounds a periphery of the movable contactor in the first direction and the third direction and is connected to surfaces of the permanent magnets on opposite sides of their surfaces facing the movable contactor. The yoke includes a protrusion protruding toward the movable contactor at a position facing the first end portion of the movable contactor in the first direction.

Disclosed are an arc path formation unit and a direct current relay including same. An arc path formation unit according to an embodiment of the present disclosure comprises a plurality of magnet parts. The magnet parts, positioned adjacent to respective stationary contacts, are configured such that surfaces facing each other have different polarities. Also, some of the plurality of magnet parts are disposed at an incline relative to other magnet parts. Thus, magnetic field is formed by the plurality of magnet parts to obliquely pass by each of the stationary contacts. The electromagnetic force generated by the magnetic field is imparted in a direction away from the central region of a direct current relay. Accordingly, the generated arc moves in a direction away from the central region of the direct current relay, and thus damage to the direct current relay can be prevented.

Disclosed are an arc path formation unit and a direct current relay including same. An arc path formation unit according to an embodiment of the present disclosure comprises a plurality of magnet parts. The magnet parts, positioned adjacent to respective stationary contacts, are configured such that surfaces facing each other have different polarities. Also, some of the plurality of magnet parts are disposed at an incline relative to other magnet parts. Thus, magnetic field is formed by the plurality of magnet parts to obliquely pass by each of the stationary contacts. The electromagnetic force generated by the magnetic field is imparted in a direction away from the central region of a direct current relay. Accordingly, the generated arc moves in a direction away from the central region of the direct current relay, and thus damage to the direct current relay can be prevented.

An electromagnetic relay includes a first fixed terminal including a first fixed contact, a second fixed terminal including a second fixed contact, a movable contact piece, a case, a drive device, and a first magnet. The movable contact piece includes a first movable contact and a second movable contact. The case includes an accommodation space and a side wall covering the accommodation space in a first direction. The first magnet extends an arc generated between the first fixed contact and the first movable contact in a second direction opposite to the first direction. The first fixed terminal includes a first end. The first end of the first fixed terminal includes a tapered portion inclined in the second direction from the first fixed contact toward the first magnet and that at least partially overlaps with the first magnet when viewed from a moving direction of the movable contact piece.

An electromagnetic relay includes a first fixed terminal including a first fixed contact, a second fixed terminal including a second fixed contact, a movable contact piece, a case, a drive device, and a first magnet. The movable contact piece includes a first movable contact and a second movable contact. The case includes an accommodation space and a side wall covering the accommodation space in a first direction. The first magnet extends an arc generated between the first fixed contact and the first movable contact in a second direction opposite to the first direction. The first fixed terminal includes a first end. The first end of the first fixed terminal includes a tapered portion inclined in the second direction from the first fixed contact toward the first magnet and that at least partially overlaps with the first magnet when viewed from a moving direction of the movable contact piece.

An electromagnetic relay includes a first fixed terminal, a second fixed terminal, a movable contact piece, a case, a magnet, and a gas flow path. The first fixed terminal includes a first fixed contact. The second fixed terminal includes a second fixed contact. The movable contact piece includes a first movable contact and a second movable contact. The case includes an accommodation space where the first fixed contact, the second fixed contact, and the movable contact piece are accommodated, a gas inflow space separate from the accommodation space, and a side wall covering the accommodation space and the gas inflow space in a first direction. The magnet is disposed between the accommodation space and the gas inflow space. The gas flow path is disposed between the side wall of the case and the magnet and is configured to communicate the accommodation space with the gas inflow space.

An electromagnetic relay includes a base, a casing, a coil, a movable contact piece and two fixed contact pieces. Each of the fixed contact pieces includes a plate-shaped base. A portion of one side of the plate-shaped base extends outward and is bent to form a fixed contact fixing part. The fixed contacts are arranged on the fixed contact fixing part, and an abdicating through hole is defined in the base. The plate-shaped bases of the fixed contact pieces are respectively connected to an outer side surface of the base and spaced from each other. Each of the fixed contact fixing parts protrudes through the abdicating through hole and located between the base and the casing. Each of the fixed contacts faces to the movable contact on the movable contact piece, and a portion of the plate-shaped base on the fixed contact piece protrudes out of the casing to form a connecting part.

An electromagnetic relay includes a base, a casing, a coil, a movable contact piece and two fixed contact pieces. Each of the fixed contact pieces includes a plate-shaped base. A portion of one side of the plate-shaped base extends outward and is bent to form a fixed contact fixing part. The fixed contacts are arranged on the fixed contact fixing part, and an abdicating through hole is defined in the base. The plate-shaped bases of the fixed contact pieces are respectively connected to an outer side surface of the base and spaced from each other. Each of the fixed contact fixing parts protrudes through the abdicating through hole and located between the base and the casing. Each of the fixed contacts faces to the movable contact on the movable contact piece, and a portion of the plate-shaped base on the fixed contact piece protrudes out of the casing to form a connecting part.

A switching device includes: a first terminal contact; a first fixed contact arranged at the first terminal contact; a contact bridge; a contact bridge carrier arranged at the contact bridge and having a barrier; a first movable contact arranged at the contact bridge; a second terminal contact; a second fixed contact arranged at the second terminal contact; a second movable contact arranged at the contact bridge; and a magnetic drive assembly including a coil and an armature, the armature being coupled to the contact bridge. The first fixed contact is in contact with the first movable contact in a switched-on state of the switching device. The first fixed contact is free of contact with the first movable contact in a switched-off state of the switching device. The second fixed contact is in contact with the second movable contact in the switched-on state of the switching device.