Circuit breaker

A circuit breaker and bimetal technology, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of being unfavorable to the miniaturization of circuit breakers, occupy a large space, and have many production processes, and achieve convenient automatic design, low production cost, The effect of a low number of parts

Pending Publication Date: 2018-12-18
ZHEJIANG CHINT ELECTRIC CO LTD
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overload protection and short-circuit protection are realized through two mechanisms, not only the number of parts is large, the production process is many, the structure is complex, the cost of the product is very high, and it takes up a lot of space, which is not conducive to the miniaturization of the circuit breaker, and there is a shortage of products in the fierce commercial competition. Competitiveness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circuit breaker
  • Circuit breaker
  • Circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0066] Such as Figure 12 The first embodiment of the pole shoe 330 is shown, the pole shoe 330 is arranged on the side of the bimetal 320 away from the armature 340, that is, the side where the bimetal 320 bends toward the passive layer, the pole shoe 330 and the bimetal 320 are arranged at intervals, and one end of the pole shoe 330 is provided with a connecting foot 331 bent toward the bimetal 320. The connecting foot 331 can be fixedly connected to the bimetal 320 by welding or the like. By connecting the pole shoe 330 to the bimetal 320 The spaced arrangement can avoid interfering with the bending of the bimetal 320 .

[0067] Further, the bimetal 320 is I-shaped, and pole shoe avoidance grooves 333 are respectively provided on the sides of the bimetal 320. The pole shoe 330 is U-shaped, and the sides of the pole shoe 330 extend into the Cooperating with the pole shoe avoiding groove 333 can not only increase the heat generation by increasing the surface area of ​​the bi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A circuit break includes a trip protection mechanism, the tripping protection mechanism comprises a bimetal sheet and an armature which is buckled and matched with the operating mechanism, pole bootsspaced apart from the armature are arranged on the bimetal, one end of the armature is provided with a spring piece connected with one end of the bimetal piece, the bimetal can drive the other end ofthe armature when it is bent, At that time of overload, the bimetal sheet bends to drive the armature to release and cooperate with the buckle of the operating mechanism, the electromagnetic force ofthe pole shoe attracts the armature to release the snap fit with the operating mechanism when the pole shoe is short-circuited, As that armature are respectively connected with the operate mechanism,Bimetal and pole shoe fit, The armature can not only cooperate with the operating mechanism to play the role of locking, but also cooperate with the bimetal and pole shoe to realize the functions of overload protection and short circuit protection respectively. The armature is cleverly designed to combine the overload protection and short circuit protection together reasonably, and has the characteristics of small occupying space, small number of parts and low production cost.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background technique [0002] The circuit breaker is an important part of the electrical industry and has been widely used. When the electrical circuit is working normally, the circuit breaker can achieve functions such as power failure, power supply and conversion circuit by closing or disconnecting the circuit that supplies electric energy; When abnormalities such as overload and short circuit occur in the circuit, the circuit breaker will trip to cut off the electrical circuit, so as to avoid endangering the safety of workers and the normal operation of equipment due to circuit failure. [0003] Existing circuit breakers usually implement overload protection and short circuit protection through overload protection mechanism and electromagnetic system. Most of the overload protection mechanisms use the characteristics of bimetal components. C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H71/10
Inventor 鲁骞刘成萍胡建帅
Owner ZHEJIANG CHINT ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap