Electromagnetic switch device for starter

An electromagnetic switch device for starter, comprising:

• a pair of main fixed contacts which form a motor electric circuit for supplying power to a motor and are located at positions electrically and mechanically separated from each other;
• a battery terminal having an end at which one of the pair of main fixed contacts is formed, and another end to which a wire electrically connected to a plus terminal of a battery is fixed;
• a motor terminal having an end at which the other one of the pair of main fixed contacts is formed, and another end to which a wire connected to the motor is fixed;
• a main movable contact which forms the motor electric circuit by electrically connecting the pair of main fixed contacts;
• a main movable core which is made of a magnetic material and moves the main movable contact toward the pair of main fixed contacts;
• a main fixed core which is made of a magnetic material and generates an attraction force between the main movable core and the main fixed core;
• an attraction coil which generates a magnetic field for attracting the main movable core to the main fixed core;
• a holding coil which generates a magnetic field for holding the main movable core at a movement end after the attraction;
• a main yoke which is made of a magnetic material and serves as a magnetic circuit for the magnetic field generated by the attraction coil and the holding coil;
• a pair of sub fixed contacts which form an electric circuit for supplying power to the attraction coil and the holding coil and are located at positions electrically and mechanically separated from each other;
• a sub movable contact which forms an electric circuit for supplying power to the attraction coil and the holding coil, by electrically connecting the pair of sub fixed contacts;
• a sub movable core which is made of a magnetic material and generates a propulsive force for moving the sub movable contact toward the pair of sub fixed contacts;
• a sub coil which generates a magnetic field as a base for the propulsive force of the sub movable core;
• a sub yoke serving as a magnetic circuit for the magnetic field of the sub coil;
• a pair of sub fixed cores located at both ends of the sub yoke and serving as a magnetic circuit;
• a main contact chamber forming a space in which the pair of main fixed contacts are located and the main movable contact can move;
• a sub contact chamber forming a space in which the pair of sub fixed contacts are located and the sub movable contact can move;
• and
• a connector assembly which includes a plurality of connectors formed by stamping a conductive material, and which forms the motor electric circuit and an electric circuit for supplying power to the attraction coil and the holding coil, wherein
• the connector assembly includes
• a connector (A) connecting one of the pair of sub fixed contacts, and the battery terminal,
• a connector (B) connecting the other one of the pair of sub fixed contacts, and one end of the attraction coil and one end of the holding coil,
• a connector (C) connecting the other end of the attraction coil and the motor terminal,
• a connector (D) connecting one end of the sub coil and an S terminal, and
• a resin member integrally fixing at least one pair of the connector (A), the connector (B), the connector (C), and the connector (D).