Electric switching device with enhanced lorentz force bias

Abstract

The present invention relates to an electric switching device (1), such as a relay, comprising a first and a second terminal (2, 4), a contact sub-assembly (6) having at least two contact members (8, 10) and configured to be moved from a connecting position (12), in which the contact members (8, 10) contact each other, to an interrupting position (14), in which the contact members (8, 10) are spaced apart from each other, a current path (16) extending, in the connecting position (12) of the contact sub-assembly (6) from the first terminal (2) via the contact sub-assembly (6) to the second terminal (4), said current path (16) being interrupted in the interrupting position (14) of the contact sub-assembly (6), a Lorentz force generator (1 8) comprising at least two conductor members (20, 22) located in the current path (1 6) and arranged to generate a Lorentz force (24) acting on the conductor members (20, 22) and generating a contact force (25) biasing the contact sub-assembly (6) into the connecting position (12), and at least one support Lorentz force generator (32) arranged to generate an enforcing Lorentz force (36) amplifying the contact force (25) biasing the contact sub-assembly (6) into the connecting position (12). The electric switching device (1) further comprises at least one support Lorentz force generator (32) arranged to generate an enforcing Lorentz force (36) amplifying the contact force (25) biasing the contact sub-assembly (6) into the connecting position (12).

Description

technical field [0001] The present invention relates to electrical switching apparatus, such as a relay, comprising: first and second terminals; a contact subassembly having at least two contact members and configured for connection from which the contact members contact each other a positional movement to an interrupted position in which the contact members are separated from each other; a current path, in the connected position of the contact subassembly, extending from the first terminal through the contact subassembly to the second terminal, The current path is interrupted at the interrupted position of the contact subassembly; and a Lorentz force generator comprising at least two conductor members positioned on the in the current path and arranged to generate a Lorentz force acting on the conductor member and generating a contact force biasing the contact subassembly into the connected position. Background technique [0002] Such electrical switching devices are well k...

AI Technical Summary

Problems solved by technology

[0006] The present invention strives to solve these problems and aims to provide an electrical switching device, such as a relay, which can be produced cost-effectively, has a simple structure, is reliable but prevents the contact members of the contact sub-assemblies from breaking due to electromagnetic repulsion. Accidental separation, even at high current values

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