provision introduced in relays with contacts normally closed in series electrically interconnected, applied in vehicle blocking devices. refers to a relay arrangement (r1 and r2) in which the normally closed contact (nf) of the first relay (r1) is presented in series with the normally closed contact (nf) of the second relay (r2), the contact normally open (na) of the first relay (r1) is presented in series with the normally open contact (na) of the second relay (r2), in the circuit applied to the vehicle blocking device (d), the highlight of which is the use of electrical interconnections ( t1 and t2) between said relays (r1 and r2), which associated with the logical sequence of change of their states, eliminates the interruption of the circuit during switching, in all situations, even if these are critical and exceptional. the present solution also achieves other objectives such as non-interference when starting the vehicle, even if the battery is in bad condition or discharged, and the robustness against premature wear of the contact of the relays and sensation of loss of power resulting from the bad contact of the relays when subjected to a high level of mechanical vibration.
展开▼
