Safety release assisting device for plug-in circuit breaker

Abstract

The invention discloses a safety release assisting device for a plug-in circuit breaker. The device comprises a bracket, a sliding plate A, a sliding plate B, rivets, a returning spring and a spring set; the bracket is fixed to the side edge of a circuit breaker body; the sliding plate A and the sliding plate B are riveted on the bracket through the rivets; a returning arm is bent at one end of the sliding plate A, and the top point of the returning spring directly faces a release testing button of the circuit breaker body; another arm is bent at the bottom end of the sliding plate B; the sliding plate B is connected with the sliding plate and can downwards pull the sliding plate in one direction, rather than upwards pushing the sliding plate A; the returning spring is connected with the bracket and the sliding plate A; the spring set is connected with the bracket and the sliding plate B. the device has the advantages that all commonly-used circuit breaker with a plastic housing applies, the hot plug of a circuit breaker system can be easily avoided, and the normal work and test of the circuit breaker cannot be influenced; the device is manufactured from metal, so that the mechanical life can be obviously improved; in addition, the mechanical structure mode is adopted, so that the reliability and the safety are obviously superior to those under the electrical mode.

Description

technical field [0001] The invention relates to the field of low-voltage electrical circuit breakers, in particular to a safety tripping auxiliary device for plug-in circuit breakers. Background technique [0002] The heat-swappable conduction circuit of the circuit breaker consists of a contact system and a release system. The contact system includes static contacts and moving contacts; the moving and static contacts are connected to the line terminals through soft braided wires, and the moving contacts are also connected to the trip unit through soft braided wires. The soldering quality of the soft braided wire affects the temperature and performance of the product. Multiple welding reduces production efficiency and easily leads to instability of product quality; at the same time, it affects the performance of circuit breakers. In order to avoid the use of soft braided wires, a clamp can be used, but during the rotation, the axis of the clamping force is inconsistent wit...

AI Technical Summary

Problems solved by technology

Multiple welding reduces production efficiency and easily leads to instability of product quality; at the same time, the accumulation of small areas of multi-strand welded soft braided wires will hinder the movement of the contacts and affect the performance of the circuit breaker; Line terminal connection, the moving contact is connected to the trip unit through a clip at the same time

However, during the rotation, the axis of the clamping force is inconsistent with the main rotation axis of the moving contact, and the moving contact must avoid the axis of the clamping force, the structure is complex, and the surface affected by the clamping force is not necessary for the moving contact The clamping force is small and unbalanced, affecting the temperature and performance of the circuit breaker

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