Circuit breaker and automatic closing device thereof

A technology for automatic closing and circuit breakers, which is applied in the direction of emergency protection devices, circuits, and parts of protective switches, etc., and can solve problems such as large volume, immature technology, and unpopular application

Active Publication Date: 2015-06-03
SEARI ELECTRIC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The automatic closing device realized by the motor and transmission mechanism has a large volume due to the use of many components, which is limited in the application of small circuit breakers
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Method used

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  • Circuit breaker and automatic closing device thereof
  • Circuit breaker and automatic closing device thereof
  • Circuit breaker and automatic closing device thereof

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Embodiment Construction

[0029] refer to figure 1 as shown, figure 1 A structural diagram of a circuit breaker using an automatic closing device according to an embodiment of the present invention is disclosed. As shown in the figure, the circuit breaker includes a body 101, a base 121, a handle 141, an operating mechanism 103, a contact group, a contact plate, a control device 108 and a tripping device (not shown in the figure). In the illustrated embodiment, the body 101 is an L-pole circuit breaker, and the base 121 is the base of the N-pole circuit breaker 102 . The base 121 is installed on the body 101, the handle 141 is installed on the base 121 through the rotating shaft, the operating mechanism 103 is installed on the base 121 through the operating mechanism positioning shaft 131, the handle 141 is connected with the operating mechanism 103 through the connecting rod 142, and the handle 141 is closed or closed. Opening, the operating mechanism is driven by the connecting rod 142 to close or ...

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PUM

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Abstract

The invention discloses an automatic closing device of a circuit breaker. An automatic closing mechanism comprises a heat-sensitive element and a reset spring; after the heat-sensitive element is electrified, the automatic closing mechanism is enabled to push a handle of the circuit breaker to perform closing operation; after the heat-sensitive element is diselectrified, the reset spring enables the automatic closing mechanism to be reset. An auxiliary contact set is connected in series in a circuit used for supplying power to the heat-sensitive element. A rotary plate transmission mechanism is rotationally mounted on a base of the circuit breaker; when being in a first position, the rotary plate transmission mechanism does not interact with the auxiliary contact set; when being in a second position, the rotary plate transmission mechanism drives the auxiliary contact set to be switched off; the rotary plate transmission mechanism rotates to the second position from the first position in response to a trigger signal. A switching shift rod performs switching between an automatic position and a manual position; when being switched to the automatic position, the switching shift rod does not interact with the rotary plate transmission mechanism; when the switching shift rod is switched to the manual position, the trigger signal is generated. The trigger signal is further generated by the closing operation of the handle.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to an automatic closing device suitable for small circuit breakers. Background technique [0002] With the development of smart grid, miniature circuit breakers with remote operation function, such as prepaid miniature circuit breakers, are in increasing demand. New requirements have also been put forward for the functions of prepaid miniature circuit breakers. In addition to the overload and short circuit protection of the circuit breaker and the remote monitoring of the arrears and power outages of the smart grid, the requirements for the products after opening are also constantly proposed. Requirements for automatic closing technology, overvoltage and undervoltage protection technology, and remote control technology. [0003] In the prior art, the automatic closing technology of the circuit breaker is mainly realized by a motor and a transmission mechanism. For example, in one pr...

Claims

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Application Information

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IPC IPC(8): H01H71/14H01H71/46H01H71/50
CPCH01H71/14H01H71/46H01H71/504
Inventor 邓彦军严鹏斌应威
Owner SEARI ELECTRIC TECH
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