Abstract: An electromagnetic relay with a contact mechanism portion being arranged above an electromagnet portion secured to a base, wherein the electromotive portion is inserted under pressure into the base, is secured, and also, the respective terminals of the contact mechanism portion are inserted under pressure from above into the base and are secured, whereby the electromagnet portion is seucred through the direct pressure insertion thereof into the base, the positional accuracy with respect to the base is increased.

Abstract: An electromagnetic relay, comprising: a box-shaped casing having a bottom wall, a pair of side walls, a pair of end walls, and a top wall, an electromagnet unit received in the casing with its axial direction extending in parallel with the top, bottom and side walls of the casing; and at least one contact unit mounted on the top wall; one of the end walls being provided with an opening for receiving the electromagnet unit therefrom. The inner surfaces of the side walls of the casing are provided with guide grooves extending along a longitudinal direction of the casing for guiding side ends of the yoke when receiving the electromagnet unit into the casing. Thus, simply by press fitting only the electromagnet unit from the opening provided in one of the end walls of the casing, the electromagnet unit may be securely received in the box-shaped casing. This facilitates the required assembly work and permits the use of automated machines for the assembly work.

Abstract: A polarized relay comprises a bar-like core having coil, and a yoke connected to the core and extending in parallel therewith. An armature including a permanent magnet is laterally movably disposed between a pair of upstanding legs formed at a free end of the yoke. Movable contacts are operationally coupled to the armature. The upstanding legs of the yoke have effective areas of magnetic pole. Upon energization of the coil, the armature is moved toward the upstanding leg to close one of the stationary contacts by overcoming the resilient resistance of the movable contact arm. Upon deenergization, the movable contact is held being contact with stationary contact under the magnetic force between the armature and upstanding leg so as to perform a bistable operation.

Abstract: A stepping relay comprising a base member to which every other component is mounted. On one side of the base member, mounted are a printed circuit board, a slider, and a dust cover. On the other side of the base member, mounted are an electromagnet, a ratchet, a positioning switch, and an interrupting switch.