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Oil damping type small circuit breaker

A small circuit breaker and oil damping technology, which is applied to circuit breaker components, electromagnetic release switches, protection switch operation/release mechanisms, etc., can solve problems such as low anti-vibration performance, high power consumption, and large temperature influence, and achieve mechanical Stable and reliable performance, enhanced security, and easy to use

Pending Publication Date: 2020-02-28
张文红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, commonly used releases are divided into thermal-magnetic releases, electronic releases and oil-damped electromagnetic releases. Thermal-magnetic releases have large energy consumption and are greatly affected by temperature. The bimetal sheet has the characteristics of irregular deformation and high power consumption; the electronic release has the disadvantages of microwave signals and easy interference with other electrical components or auxiliary circuit signals in the circuit during use.
[0003] The contact system of miniature circuit breakers usually has the problems of difficult disassembly and assembly of the operating mechanism and low anti-vibration performance, and cannot be connected with the oil damping trip system, so it is not suitable for use with the oil damping trip system in miniature circuit breakers

Method used

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  • Oil damping type small circuit breaker
  • Oil damping type small circuit breaker
  • Oil damping type small circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] This embodiment is an oil damping miniature circuit breaker, and the operating mechanism 2 used is the operating mechanism of the oil damping miniature circuit breaker disclosed in Chinese patent application CN201910408026.2, such as Picture 1-1 , Figure 1-2 ( Figure 1-2 Hide the bracket 22) shown in the middle, mainly include handle 21, bracket 22, upper connecting rod 23, lower connecting rod 24, jumper 25, trip assembly 26 and dynamic conduction bridge 42. The handle 21 , the tripping assembly 26 and the moving conductive bridge 42 are correspondingly equipped with a handle return spring a1 , a tripping assembly returning torsion spring a2 and a moving conducting bridge returning torsion spring a3 . The operating structure can cooperate with the action assembly 27, and the action assembly 27 is also equipped with a corresponding action assembly return torsion spring a4.

[0075] Such as figure 2 As shown, in this embodiment, the bracket 22 is a vertical bracket...

Embodiment 2

[0093] This embodiment is an oil-damped miniature circuit breaker with leakage protection, such as Figure 20 As shown, it mainly includes casing 1, operating mechanism 2, oil damping tripping system 3, contact system 4, arc extinguishing system 5, circuit assembly 6, partition 7, leakage protection system 8 and connecting rod 9. The operating mechanism 2 adopted is basically the same as the operating mechanism 2 of the first embodiment.

[0094] Such as Figure 20 , 21 As shown, the outer shell 1 is roughly in the shape of a character, and the operating mechanism 2 is installed in the middle of the circuit breaker. The oil damping tripping system 3 and the arc extinguishing system 5 are respectively located on both sides of the operating mechanism 2 . The contact system 4 is located at the bottom of the circuit breaker. The bulkhead 7 is mounted on the side of the bottom of the circuit breaker.

[0095] The circuit breaker is a two-wire circuit breaker (L, N wires, ie li...

Embodiment 3

[0103] This embodiment is a plug-in oil-damped miniature circuit breaker, such as Figure 23 As shown, it mainly includes housing 1, operating mechanism 2, oil damping tripping system 3, micro switch 5, contact system, arc extinguishing system and a terminal block Z1. The operating mechanism 2 adopted is basically the same as the operating mechanism 2 of the first embodiment.

[0104] Such as Figure 23 As shown, the outer shell 1 is roughly in the shape of a character, and the operating mechanism 2 is installed in the middle of the circuit breaker. The oil damping tripping system 3 and the arc extinguishing system are respectively located on both sides of the operating mechanism 2 . The contact system includes an electrically conductive bridge 42 .

[0105] The oil damping tripping system 3 includes an oil damping coil 31 and an oil damping cup 32 , the oil damping cup 32 is fixed at the bottom of the circuit breaker, and the oil damping coil 31 is on the upper part thereo...

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Abstract

The invention discloses an oil damping type small circuit breaker, and belongs to the technical field of circuit breakers. The oil damping type small circuit breaker comprises a shell, an operating mechanism, an oil damping tripping system, a contact system, an arc extinguishing system and a circuit assembly. The operating mechanism comprises a handle and a bracket. The handle is hinged above thebracket. The oil damping type small circuit breaker also comprises an upper connecting rod, a lower connecting rod, a tripping buckle and a tripping assembly. The upper connecting rod is hinged at thelower part of the handle. The middle part of the lower connecting rod is hinged at the lower part of the upper connecting rod. The tripping assembly is hinged at the middle part of the upper connecting rod. The upper connecting rod limits the rotation direction of the tripping assembly. The tripping buckle is hinged on the upper part of the upper connecting rod, one side of the tripping buckle ismutually limited and matched with the upper part of the lower connecting rod and the other side is mutually limited and matched with the tripping assembly. The bracket is also used for hinging an action assembly, and the action assembly can drive the tripping assembly to rotate during operation. The matching between the oil damping type small circuit breaker and the oil damping tripping system can be ensured.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and mainly relates to an oil damping small circuit breaker. Background technique [0002] At present, commonly used releases are divided into thermal-magnetic releases, electronic releases and oil-damped electromagnetic releases. Thermal-magnetic releases have large energy consumption and are greatly affected by temperature. The bimetal sheet has the characteristics of irregular deformation and high power consumption; the electronic trip unit has the disadvantages of microwave signals and easy interference with other electrical components in the circuit or auxiliary circuit signals during use. [0003] The contact system of miniature circuit breakers usually has the problems of difficult disassembly and assembly of the operating mechanism and low anti-vibration performance, and cannot be connected with the oil damping trip system, so it is not suitable for use with the oil damping trip s...

Claims

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Application Information

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IPC IPC(8): H01H71/24H01H71/50H01H73/18H01H73/36
CPCH01H71/24H01H71/50H01H73/18H01H73/36
Inventor 常群英张文红
Owner 张文红