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A small circuit breaker with quick closing mechanism of contacts

A small circuit breaker, fast closing technology, applied in the direction of circuit breaker components, circuit breaker contacts, protective switch operation/release mechanism, etc., can solve the problems of safety hazards, circuit breakers without fast closing devices, etc., to achieve reliable performance, The effect of simple structure, fast closing speed and breaking speed

Active Publication Date: 2016-05-04
ZHEJIANG TENGEN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing circuit breaker in the background technology does not have a quick closing device and has potential safety hazards, the present invention provides a small circuit breaker with a quick closing mechanism for contacts

Method used

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  • A small circuit breaker with quick closing mechanism of contacts
  • A small circuit breaker with quick closing mechanism of contacts
  • A small circuit breaker with quick closing mechanism of contacts

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Embodiment Construction

[0019] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0020] Depend on figure 1 combine figure 2 , 3 As shown in , 4, and 5, a small circuit breaker with a quick closing mechanism for contacts includes a housing 1, and the housing 1 is provided with a static contact 2, a moving contact 3 and a lever 4. The described The movable contact 3 is hinged to the lever 4 through the pin shaft 31, and the pin shaft 31 is provided with a reset member 32, one end of the reset member 32 is engaged with the movable contact 3, and the other end is engaged with the lever 4, Specifically, the reset member is a torsion spring. The reset member 32 has a movement tendency to drive the movable contact 3 to rotate around the pin shaft 31. Specifically, the rotation of the lever drives the torsion spring to move, and the torsion spring drives the movable contact to rotate around the pin shaft. The lever 4 is provided with a push...

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Abstract

The invention discloses a small-sized circuit breaker provided with a rapid contact closing mechanism, and aims to solve the problem of potential safety hazard due to the absence of a rapid closing device in the conventional circuit breaker. The small-sized circuit breaker comprises a shell, wherein a movable contact, a lever and a limiting piece are arranged in the shell; the lever is provided with a push block; the movable contact is provided with a first clamping block; the limiting piece is hinged in the shell; the limiting piece has a first position which is clamped with the first clamping block of the movable contact and a second position which is pushed by the push block to unlock the limiting piece and the first clamping block; a resetting piece has a first state in which the resetting piece is linked with the lever and the movable contact, a second state in which energy is stored by the resetting piece when the limiting piece is clamped with the first clamping piece, and a third state in which the resetting piece releases energy to close the movable contact rapidly after the limiting piece and the first clamping block are unlocked. Through adoption of the small-sized circuit breaker, the contact can be closed rapidly by means of mechanical energy before the movable contact of the circuit breaker is closed, and the influence of external force operation on the contact closing speed is avoided.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a small circuit breaker with a quick closing mechanism for contacts. Background technique [0002] The miniature circuit breaker consists of handle, U-bolt, lock and contact system. During the closing operation, the handle rotates to drive the U-shaped bolt and then drives the lock to move, and the lock drives the contact system to close. During operation, the torque of the torsion spring of the handle increases with the rotation angle of the handle, and the contact system is closed during the gradual increase of the torque of the torsion spring. Therefore, the closing speed of the contact system is still related to the speed of human operation, which affects the reliability of closing and the operating life of the product. Therefore, the circuit breaker needs a fast closing function to improve the reliability of the product. [0003] The fast closing function is mainly to realize the irre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/50H01H73/04
Inventor 单小龙袁高普张文善
Owner ZHEJIANG TENGEN ELECTRIC
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