摘要:
This contact device comprises a pair of fixed terminals 2 with a fixed contact 2a each, a movable armature 3 with movable contacts 3a which contact to or separate from the fixed contacts 2a, a movable shaft 4 connected to the movable armature 3 at its one end, a movable core 8 secured to the opposite end 4b side of the movable shaft 4, a movable core receiver 7 slid onto the movable shaft 4 so that it faces a surface 8b on the movable armature side of the movable core 3 to receive the movable core 8 driven by an electromagnetic mechanism, an impact absorber 17 disposed on a surface 7a on the movable armature side of the movable core receiver 7 to absorb an impact generated when the movable core 3 hit the movable core receiver 7, and a stopper 16 (a movement restriction member) disposed on a surface on the movable armature side of the impact absorber 17 to restrict a movement of the impact absorber 17.
摘要:
A remote control residential and commercial lighting and appliance branch circuit breaker (20) provides both overload current protection and load management. Structure is provided enabling packaging in a three-quarter inch width case (22), including a first set of contacts in the case provided by a pair of separable overload breaker contacts (44, 46), trip structure (48) in the case for causing separation of the overload breaker contacts in response to overload currents therethrough, a second set of contacts in the case provided by a pair of switching relay contacts (150, 152) having open and closed conditions and electrically connected in series with the overload breaker contacts, and an actuator (154) in the case energizable to mechanically actuate the switching relay contacts. Feedback circuitry is included providing status indication of the condition of the switching relay contacts. Structure is provided for reducing actuator and spring requirements and sizes.
摘要:
This contact device comprises a pair of fixed terminals 2 with a fixed contact 2a each, a movable armature 3 with movable contacts 3a which contact to or separate from the fixed contacts 2a, a movable shaft 4 connected to the movable armature 3 at its one end, a movable core 8 secured to the opposite end 4b side of the movable shaft 4, a movable core receiver 7 slid onto the movable shaft 4 so that it faces a surface 8b on the movable armature side of the movable core 3 to receive the movable core 8 driven by an electromagnetic mechanism, an impact absorber 17 disposed on a surface 7a on the movable armature side of the movable core receiver 7 to absorb an impact generated when the movable core 3 hit the movable core receiver 7, and a stopper 16 (a movement restriction member) disposed on a surface on the movable armature side of the impact absorber 17 to restrict a movement of the impact absorber 17.
摘要:
The invention relates to an electromagnetic switchgear comprising an opening driver element (7) with which a contact driver (3) can be displaced out of an inoperative position (R) and into an operative position (B). To this end, a contact bridge (8) of a break contact (5) is lifted by mating contacts (9) of the break contact (5). The contact bridge (8) is held in the opened position by a holding device (12) until it is driven by a closing driver element (18). The break contact (5) is thus actuated by a switching hysteresis.
摘要:
A contact device having a pair of fixed terminals (2) each provided with a fixed contact (2a); a movable terminal (3) having movable contacts (3a) coming in contact with and separating from the fixed contacts (2a); a movable shaft (4) connected at one end (4a) to the movable terminal (3); a movable iron core (8) fixed to the other end (4b) of the movable shaft (4); a movable iron core receiving member (7) fitted on the movable shaft (4) so as to face a surface (8b) on the movable terminal side of the movable iron core (8) and receiving the movable iron core (8) driven by a electromagnetic mechanism; an impact absorbing body (17) provided on a surface (7a) on the movable terminal side of the movable iron core receiving member (7) and absorbing an impact occurring when the movable iron core (8) collides with the movable iron receiving member (7); and a stopper (movement restriction member)(16) provided on a surface (17a) on the movable terminal side of the impact absorbing body (17) and restricting the movement of the impact absorbing body (17).
摘要:
An electromagnetic relay including a first elastic member (14) for elastically holding an armature (12) at an initial position, an electromagnet portion that exercises magnetic force against the elastic force of the first elastic member under an excitation state to attract the armature to a predetermined excitation position, a movable contact (16) and a fixed contact (20) that come into contact with each other when the armature is moved from the initial position to the excitation position, a movable contact tag (17) to which the movable contact is secured, a second elastic member (18) that exercises predetermined elastic force and holds the movable contact tag at the contact position at which the movable contact and the fixed contact are in contact with each other, and a press portion (15) that moves together with the armature to press the movable contact tag so that the movable contact and the fixed contact are kept in non-contact state with each other.