Dual-coil multi-contact electromagnetic relay

Abstract

The present invention relates to the technical field of relays and in particular to a dual-coil multi-contact electromagnetic relay including an electromagnet assembly, a contact assembly, and a movable push assembly. The electromagnet assembly turns on or off the contact assembly through the push assembly, and includes a start coil, a holding coil and a control module. The start coil is arrangedin parallel with the holding coil. The control module controls the connection/disconnection of the start coil and a power supply. When the relay is started to operate, the control module electricallyconnects the start coil and the power supply, and the start coil and the holding coil are arranged in parallel to reduce the equivalent resistance value of the two coils, increase the starting power of the relay, generate strong magnetic attraction, improve the response efficiency of the relay and satisfy the large stroke design. When the contact assembly is in an on state, the control module disconnects the start coil from the power supply and the holding coil limits the current and can keep the contact assembly in the on state only with low power, thereby achieving an energy saving purpose.

Description

technical field [0001] The invention relates to the technical field of relays, and in particular discloses a double-coil multi-contact electromagnetic relay. Background technique [0002] Relays are one of the commonly used accessories for various intelligent control equipment. During the use of relays, on the one hand, the size of the relay is required to be smaller and smaller, and on the other hand, the relay is required to have a large stroke design to meet the safety required for circuit isolation. In the prior art, the relay designed with a large stroke requires a high-power driving force, and the relay maintains a high-power state for a long time, resulting in a waste of electric energy; the drive of the relay with a small power cannot meet the design requirements of the large stroke of the relay, and the circuit of the small-stroke relay The safety of the partition cannot be fully guaranteed. Contents of the invention [0003] In order to overcome the shortcomings...

AI Technical Summary

Problems solved by technology

[0002] Relays are one of the commonly used accessories for various intelligent control equipment. During the use of relays, on the one hand, the size of the relay is required to be smaller and smaller, and on the other hand, the relay is required to have a large stroke design to meet the safety required for circuit isolation. In the prior art, the relay designed with a large stroke requires a high-power driving force, and the relay maintains a high-power state for a long time, resulting in a waste of electric energy; the drive of the relay with a small power cannot meet the design requirements of the large stroke of the relay, and the circuit of the small-stroke relay The safety of the partition cannot be fully guaranteed

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