CN2479635Y - Short circuit short delay tripping mechanism for miniature plastic-shel circuit breaker - Google Patents
Short circuit short delay tripping mechanism for miniature plastic-shel circuit breaker Download PDFInfo
- Publication number
- CN2479635Y CN2479635Y CN 01223668 CN01223668U CN2479635Y CN 2479635 Y CN2479635 Y CN 2479635Y CN 01223668 CN01223668 CN 01223668 CN 01223668 U CN01223668 U CN 01223668U CN 2479635 Y CN2479635 Y CN 2479635Y
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- CN
- China
- Prior art keywords
- push rod
- tripping
- short
- iron core
- short circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Disclosed is a minitype short circuit short-delayed tripping mechanism of plastic shell breaker, and the front end of a moveable iron core is fixedly connected with a push rod. A pivot shaft of a movable contact is installed with an energy storing torsional spring, and the two ends of the torsional spring are separately connected with the push rod and the middle portion of a jumping button. For the energy storing function of torsional spring leads to the breaker with the short-delayed tripping function in the short circuit, the alternating and direct current power distribution can realize gradation selective protection. The overstep tripping problem in the short circuit process can be solves, and the power supplying reliability and security can be increased.
Description
The utility model relates to protective overload circuit-breakin, particularly a kind of miniature breaker of plastic casing short circuit short time delay tripping mechanism.
Miniature breaker of plastic casing be a kind of in electric wiring common electrical elements, have a plastic casing usually.Its primary structure is articulated on the hinge 2 of housing in the middle part of the moving contact of this circuit breaker as shown in Figure 2, the operating switch handle, and handle and connecting rod promotes end movement on the moving contact 4, and the moving contact lower end contacts with fixed contact, current lead-through.When circuit is short-circuited; short circuit current generates an electromagnetic field the coil of electromagnet mechanism; moving iron core 7 actions when electric current reaches setting value in the coil; moving iron core pushed away connecting rod 6 again and affected tripping 1 action; tripping is connected on the moving contact; the action of tripping drives disconnect handle connecting rod and the power by spring of moving contact upper end and makes the rapid disjunction disengaging of moving contact and fixed contact, reaches the effect of instantaneous protection.But the circuit of Subscriber Unit often is provided with a plurality of circuit breakers; and be provided with multistage open circuit protection; higher level's circuit breaker is disconnected; cause multiple power supplies to interrupt forming overstep tripping; other electrical equipment can't be used, can the formation accident when serious.If can make circuit breaker can make short time delay, can avoid the overstep tripping problem, improve the reliability and the fail safe of power supply.
The purpose of this utility model provides a kind of miniature breaker of plastic casing short circuit short time delay tripping mechanism; only in circuit breaker, install an energy storage torsion spring additional and get final product real-time short time delay function; and can change the length of delaying time by the size of adjusting torsion spring angle and moment of torsion; make the AC and DC distribution realize the selective protection of differential cooperation; solve the problem of overstep tripping in the short circuit process, improve the reliability and the fail safe of power supply.
For achieving the above object, the utility model is taked following design: at the affixed push rod of front end of moving iron core, the direction of push rod is consistent with the direction of moving iron core, and the energy storage torsion spring is installed on the hinge of moving contact, one end of torsion spring is connected with above-mentioned push rod, and the other end is connected with the middle part of tripping; The connecting rod lower end that is connected with tripping break away from moving iron core and and moving iron core and push rod between leave certain interval.
The miniature breaker of plastic casing short circuit of the utility model short time delay tripping mechanism is at moving iron core front end push rod to be installed, and the energy storage torsion spring has been installed between push rod and tripping.Thereby be short-circuited when circuit, and when short circuit current reaches setting value, though moving rapidly and promote push rod, moving iron core travels forward, because the energy storage torsion spring has the elastic energy storage effect, an end is pushed displacement though it links to each other with push rod, can not make the end action that links to each other with tripping immediately.Have only when the torsion spring two ends are urged the certain moment of torsion of formation, torsion spring has stored up big potential energy, is enough to overcome the resistance between moving contact and the handle and connecting rod, and the end in addition of torsion spring could move and affect tripping, and moving contact moves, and circuit breaker is disconnected, and forms short time delay and opens circuit.The utility model also can change the length of delay time by adjusting the size of torsion spring angle and moment of torsion, produces multiple differential.Thereby can in the AC and DC distribution, realize the selective protection of differential cooperation, solved in the short circuit process in the problem of overstep tripping, improved the reliability and the fail safe of power supply.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is traditional breaker tripping mechanism schematic diagram
As shown in Figure 1, the short time delay tripping mechanism of the utility model breaker of plastic casing, it is the affixed push rod 5 of front end at moving iron core 7, the direction of push rod is consistent with moving iron will direction, energy storage button spring 3 is installed on the hinge 2 of moving contact 4, one end of torsion spring is connected with above-mentioned push rod, and the other end is connected with the middle part of tripping 1; Bar 6 lower ends that are connected with tripping break away from moving iron core and and moving iron core and push rod between leave certain interval.For making torsion spring easy for installation and move reliable and stablely, can offer Long Circle torsion spring jack at the front end of push rod 5, offer jack with torsion spring diameter coupling at the tripping middle part.
Claims (2)
1, a kind of miniature breaker of plastic casing short circuit short time delay tripping mechanism, it is characterized in that: at the affixed push rod of front end of moving iron core, the direction of push rod is consistent with the direction of moving iron core, the energy storage torsion spring is installed on the hinge of moving contact, one end of torsion spring is connected with above-mentioned push rod, and the other end is connected with the middle part of tripping; The connecting rod lower end that is connected with tripping break away from moving iron core and and moving iron core and push rod between leave certain interval.
2, miniature breaker of plastic casing short circuit short time delay tripping mechanism according to claim 1, it is characterized in that: the front end of push rod is offered Long Circle torsion spring jack, offers the jack with torsion spring diameter coupling at the tripping middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223668 CN2479635Y (en) | 2001-05-10 | 2001-05-10 | Short circuit short delay tripping mechanism for miniature plastic-shel circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223668 CN2479635Y (en) | 2001-05-10 | 2001-05-10 | Short circuit short delay tripping mechanism for miniature plastic-shel circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2479635Y true CN2479635Y (en) | 2002-02-27 |
Family
ID=33640199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01223668 Expired - Fee Related CN2479635Y (en) | 2001-05-10 | 2001-05-10 | Short circuit short delay tripping mechanism for miniature plastic-shel circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2479635Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981642A (en) * | 2008-04-01 | 2011-02-23 | 罗伯特·博世有限公司 | Hinge for a button assembly |
| CN105513916A (en) * | 2016-01-21 | 2016-04-20 | 首瑞（天津）电气设备有限公司 | Time-delay operation mechanism adopted in circuit breaker and circuit breaker |
-
2001
- 2001-05-10 CN CN 01223668 patent/CN2479635Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981642A (en) * | 2008-04-01 | 2011-02-23 | 罗伯特·博世有限公司 | Hinge for a button assembly |
| CN101981642B (en) * | 2008-04-01 | 2013-11-20 | 罗伯特·博世有限公司 | Hinge for a button assembly |
| CN105513916A (en) * | 2016-01-21 | 2016-04-20 | 首瑞（天津）电气设备有限公司 | Time-delay operation mechanism adopted in circuit breaker and circuit breaker |
| WO2017124814A1 (en) * | 2016-01-21 | 2017-07-27 | 首瑞（天津）电气设备有限公司 | Time-delay operation mechanism used in circuit breaker, and circuit breaker |
| CN105513916B (en) * | 2016-01-21 | 2018-06-29 | 首瑞（天津）电气设备有限公司 | Deferred action mechanism and breaker in breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020227 Termination date: 20100510 |