A contact mechanism includes: a movable touch piece that includes a caulking portion, a pair of arms forked from the caulking portion and respectively having free ends, first and second movable contacts provided at the respective free ends of the pair of arms, and a coupler configured to couple the free ends of the pair of arms; and first and second fixed contacts disposed respectively facing the first and second movable contacts contactably to or separably from the first and second movable contacts.

An electromagnetic relay (100) has high wear resistance, high corrosion resistance, and good magnetic properties. The electromagnetic relay (100) includes a magnetic component including an alloy layer on its surface formed by diffusion-coating of at least one element selected from the group consisting of Cr, V, Ti, and Al. The alloy layer has a thickness of 5 to 60 μm, inclusive.

An electromagnetic relay (100) has high wear resistance, high corrosion resistance, and good magnetic properties. The electromagnetic relay (100) includes a magnetic component including an alloy layer on its surface formed by diffusion-coating of at least one element selected from the group consisting of Cr, V, Ti, and Al. The alloy layer has a thickness of 5 to 60 μm, inclusive.

A relay device comprises a base, a pin, and an outer cap. A gap is arranged at a peripheral of the base. The pin has a convex plate and assembled to the gap of the base and one end thereof is protruded from the gap. The convex plate is covered/shielded the gap. The outer cap includes a receiving groove. A notch of the receiving groove is covered the base and the pin. A paste is applied among the peripheral of the base, the convex plate of the pin, and the notch of the receiving groove for fastening. The gap arranged at the peripheral of the base is providing the pin for assembling without directional limitation and advantageous to once assembly of the base and the pin in an automatic machine so as to simplify the manufacturing process of the relay device.

A relay coil assembly includes a bobbin having flanges on two ends, an enameled wire wound around bobbin, a coil pin mounted to the flange and having an insertion portion, an enameled wire fixing portion and a signal wire fixing portion, and a signal wire. The signal wire fixing portion is provided with a first engagement recess with an opening facing downward, in which the signal wire is engaged. An inverted hook is provided at one of two recess sidewalls of the first engagement recess, and a slope section is provided at one of the two recess sidewalls of the first engagement recess. The opening gradually enlarges from inside to outside along the slope section, which is capable of squeezing the signal wire into the first engagement recess and the inverted hook is capable of preventing the signal wire from coming out.

A high-insulation small-sized hinged electromagnetic relay, includes a bobbin, coil terminals, an iron core and a fixed contact block. The bobbin has a cylindrical portion for winding a coil, and the iron core includes a mandrel and a magnetic pole portion arranged on the upper end of the mandrel; the mandrel of the iron core is fitted into the central hole of the cylindrical portion of the bobbin, the coil terminals is assembled on the lower flange of the bobbin and positioned on one side in the width direction of the bobbin, and the fixed contact block is interposed in the upper flange and the lower flange of the bobbin and positioned on the other side in the width direction of the bobbin; the cylindrical portion is offset.

An electromagnetic relay includes a fixed terminal, a base, a fixed contact, a movable contact, a movable contact piece, a movable terminal, a card, and a contact protrusion. The base supports the fixed terminal. The fixed contact is connected to the fixed terminal. The movable contact faces the fixed contact. The movable contact is connected to the movable contact piece. The movable terminal is fixed to the base. The movable terminal is connected to the movable contact piece. The card pushes the movable contact piece to move the movable contact. The contact protrusion is provided on the movable contact piece. The contact protrusion contacts the card to allow the card to press the movable contact piece.

A displaceable portion of a moving contactor is connected to, and electrically conductive with, a pair of moving contacts. An armature actuates the moving contactor. The armature has an adhering portion to be adhered onto an electromagnet. A space inside an opening that exposes a part (an exposed part) of the displaceable portion crosses a predetermined plane. The predetermined plane intersects at right angles with an arrangement direction (a first direction) in which the pair of moving contacts is arranged side by side. The predetermined plane passes through a center between both ends in the arrangement direction of the adhering portion.

An electromagnetic relay includes a magnetic attractive member magnetically attractable by an electromagnet unit, and a conductive resilient plate connected to the magnetic attractive member and having a movable portion fixed to the magnetic attractive member, and a movable contact being urged to contact with a first stationary contact. A flexible conductive member is connected to the conductive resilient plate. When the electromagnetic unit is energized and attracts the magnetically attractive member to move the conductive resilient plate therealong, the movable contact contacts with a second stationary contact. When the electromagnetic unit is de-energized, the movable contact contacts with the first stationary contact.

A relay includes a fixed contact, a movable contact, a return member of the movable contact, and a case that covers the fixed contact, the movable contact, and the return member. The case is made of a material having transparency or translucency. The relay RS further includes a tray portion that is disposed above the return member and below the fixed contact and holds a fusing residue generated by separation/approach of the movable contact from/to the fixed contact. The relay further includes a cap that covers a portion of a terminal connected to the fixed contact, the portion being exposed from the case. When the cap is attached to the case, at least a portion of the case is exposed without being covered with the cap.