electromagnetic device for controlling the electric power supply to the electric motor for starting the internal combustion engine.

摘要

the device comprises two fixed contacts (5, 5a), a plunger (17, 18, 19, 21.24) coupled to the central portion of a mobile contact (22) whose free ends (40) are likely to cooperate with the fixed contacts (5a).and an electromagnet control (3) comprising a solenoid (10) and a mobile core (15) movable from a starting position of rest (figure 1) to a final position in which ran into a andlemento of arrest (8).pulled the plunger (17) in such a way as to bring the tip (40) of the mobile contact (22) against the fixed contacts (5a) before reaching its final position.the mobile contact (22) is likely, due to the effect of support on fixed contacts (5a), inflettersi elasticamente one beam.when the core (15) ran against the stop element (8) fixed contacts (5, 5a) are subject to a rocking motion with respect to their working position.the mobile contact (22) is carried out in such a way that the trigger of the rocking motion of the fixed contacts (5, 5a), the free ends (40) are designed to follow the fixed contacts (5)5 (a)) in their movement, having an acceleration (a1) in the right way to vibrate higher than the acceleration (aoax) of fixed contacts (5)5 (a)) and an amplitude of oscillation (s1) increased the amplitude of oscillation (d) of the fixed contacts (5, 5a) (figure 1).