CN101763993A - Low-voltage miniature circuit breaker - Google Patents
Low-voltage miniature circuit breaker Download PDFInfo
- Publication number
- CN101763993A CN101763993A CN201010039749A CN201010039749A CN101763993A CN 101763993 A CN101763993 A CN 101763993A CN 201010039749 A CN201010039749 A CN 201010039749A CN 201010039749 A CN201010039749 A CN 201010039749A CN 101763993 A CN101763993 A CN 101763993A
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- CN
- China
- Prior art keywords
- circuit breaker
- iron core
- miniature circuit
- low
- snap close
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- 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.)
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Abstract
The invention relates to a low-voltage miniature circuit breaker which mainly solves the problems that the lock catch and the tripping buckle of the existing miniature circuit breaker are arranged in a centralizing way, the structure is complex, the space utilization in the shell is irrational and the assembly is difficult; the low-voltage miniature circuit breaker is characterized in that: a rotary torsional spring (11) is arranged between one end of an iron core (10) and a lock catch (5), two ends of the torsional spring (11) are respectively hung at the end parts of the lock catch (5) and the iron core (10), the other end of the iron core (10) corresponds to a movable contact bracket (12); the low-voltage miniature circuit breaker fully utilizes the space in the shell, the distribution of all parts is rational, and the low-voltage miniature circuit breaker has the advantages of simple structure and being convenient for assembly.
Description
Technical field:
The present invention relates to a kind of low-voltage electrical apparatus, be specifically related to a kind of low-voltage miniature circuit breaker.
Background technology:
At present, the low-voltage miniature circuit breaker at the two poles of the earth is generally adopted, this low-voltage miniature circuit breaker is mainly by three housings that separate, transmission mechanism, overload protection arrangement, arc-control device, moving contact, fixed contact, binding post is formed, its inside by middle casing with two polar circuits separately, transmission mechanism wherein is mainly by snap close, tripping, support, moving contact frame, " U " type connecting rod and handle are formed, support, " U " type connecting rod and handle are formed four-bar mechanism, have chute on the support, one end of " U " type connecting rod places in the chute and can slide therein, tripping is a dihedral, an end of tripping blocks mutually with snap close during normal the use, and the other end blocks the chute on the support; In overheated, when overload,, tripping breaks away from snap close, the tripping rotation, and the chute on the support is opened, and " U " type connecting rod slides along chute can't block support, and support drives moving contact and moves the disengaging fixed contact under the effect of spring force.Because the moment that moving contact and fixed contact break away from can produce electric arc, for successfully being introduced, electric arc carries out arc extinguishing in the arc-control device, there is a kind of fixed contact of miniature circuit breaker to be arranged on the position of the middle part of housing near arc control device, the change of fixed contact position also changes the direction of rotation of moving contact thereupon, iron core action in the overload coil also changes thereupon, the snap close of existing this circuit breaker and tripping are concentrated and are arranged on support and the moving contact frame, iron core in the overload coil is corresponding with snap close, each parts concentrates in together, complex structure, space utilization in the housing is unreasonable, the assembling difficulty.
Summary of the invention:
Be provided with concentrated in order to overcome existing miniature circuit breaker snap close and tripping, space utilization in complex structure, the housing is unreasonable to making, the deficiency of assembling difficulty, the invention provides a kind of low-voltage miniature circuit breaker, this low-voltage miniature circuit breaker has made full use of the space in the housing, each arrangements of components is reasonable, has characteristics simple in structure and that be convenient to assemble.
Technical scheme of the present invention is: a kind of low-voltage miniature circuit breaker comprises moving contact, fixed contact, arc control device, housing, snap close, tripping, bimetal leaf and overload coil, fixed contact is positioned at the entrance side of arc control device and is fixed on the yoke, moving contact is corresponding with fixed contact, snap close and tripping are all hinged with housing, snap close can block mutually with tripping, be provided with iron core in the overload coil, moving contact is installed on the moving contact frame, being provided with between one end of iron core and the snap close can rotating torsion spring, and the two ends of torsion spring are hung in the end of snap close and iron core; The other end of iron core is corresponding with moving contact frame.
The end of corresponding snap close is provided with draw-in groove on the described iron core, and an end of torsion spring hangs in the draw-in groove.
Described housing is provided with a cylinder, and torsion spring set is outside described cylinder.
The present invention has following beneficial effect: owing to take such scheme, by torsion spring iron core is connected with snap close, is arranged on the variation of moving contact motion mode on the yoke to adapt to fixed contact.When overload, electric current in the overload coil is bigger, the magnetic attraction iron core that overload coil produces is to the direction motion near moving contact frame, iron core drives torsion spring and rotates, thereby make torsion spring drive snap close and tripping disengaging, meanwhile, the other end of iron core promotes moving contact frame, makes moving contact frame drive moving contact and fixed contact disjunction.The present invention compares with background technology, reasonably utilizes the space in the housing of knowing clearly, and is simple in structure, is convenient to assembling.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is rearviews of Fig. 1.
1-moving contact among the figure, 2-fixed contact, 3-arc control device, 4-housing, 5-snap close, 6-tripping, 7-bimetal leaf, 8-overload coil, 9-yoke, 10-iron core, 11-torsion spring, 12-draw-in groove, 13-cylinder, 14-moving contact frame.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, a kind of low-voltage miniature circuit breaker comprises moving contact 1, fixed contact 2, arc control device 3, housing 4, snap close 5, tripping 6, bimetal leaf 7 and overload coil 8, fixed contact 2 is positioned at the entrance side of arc control device 3 and is fixed on the yoke 9, moving contact 1 is corresponding with fixed contact 2, snap close 5 and tripping 6 are all hinged with housing 4, snap close 5 can block mutually with tripping 6, be provided with iron core 10 in the overload coil 8, moving contact 1 is installed on the moving contact frame 14, being provided with between one end of iron core 10 and the snap close 5 can rotating torsion spring 11, and the two ends of torsion spring 11 are hung in the end of snap close 5 and iron core 6; The other end of iron core 10 is corresponding with moving contact frame 14.By torsion spring 11 iron core 10 is connected with snap close 5, is arranged on the variation of moving contact 1 motion mode on the yoke 9 to adapt to fixed contact 2.When overload, electric current in the overload coil 8 is bigger, the magnetic attraction iron core 10 that overload coil 8 produces is to the direction motion near moving contact frame 14, iron core 10 drives torsion spring 11 and rotates, thereby making torsion spring 11 drive snap close 5 breaks away from tripping 6, meanwhile, the other end of iron core 10 promotes moving contact frame 14, makes moving contact frame 14 drive moving contact 1 and fixed contact 2 disjunctions.The present invention compares with background technology, reasonably utilizes the space in the housing 4 of knowing clearly, and is simple in structure, is convenient to assembling.
In conjunction with shown in Figure 2, the end of corresponding snap close 5 is provided with draw-in groove 12 on the described iron core 10 by Fig. 1, and an end of torsion spring 11 hangs in the draw-in groove 12.Draw-in groove 12 is convenient to torsion spring 11 and is hung and it is blocked mutually with iron core 10, and snap close 5 is provided with the pin that blocks mutually with torsion spring 11.
In conjunction with shown in Figure 2, described housing 4 is provided with a cylinder 13 by Fig. 1, and torsion spring 11 is enclosed within outside the described cylinder 13.Cylinder 13 can make torsion spring 11 location, and torsion spring 11 can rotate around cylinder 13.
Claims (3)
1. low-voltage miniature circuit breaker, comprise moving contact (1), fixed contact (2), arc control device (3), housing (4), snap close (5), tripping (6), bimetal leaf (7) and overload coil (8), fixed contact (2) is positioned at the entrance side of arc control device (3) and is fixed on the yoke (9), moving contact (1) is corresponding with fixed contact (2), snap close (5) and tripping (6) are all hinged with housing (4), snap close (5) can block mutually with tripping (6), be provided with iron core (10) in the overload coil (8), moving contact (1) is installed on the moving contact frame (14), it is characterized in that: being provided with between an end of iron core (10) and the snap close (5) can rotating torsion spring (11), and the two ends of torsion spring (11) are hung in the end of snap close (5) and iron core (6); The other end of iron core (10) is corresponding with moving contact frame (14).
2. a kind of low-voltage miniature circuit breaker according to claim 1 is characterized in that: the end that iron core (10) is gone up corresponding snap close (5) is provided with draw-in groove (12), and an end of torsion spring (11) hangs in the draw-in groove (12).
3. a kind of low-voltage miniature circuit breaker according to claim 1 and 2 is characterized in that: housing (4) is provided with a cylinder (13), and torsion spring (11) is enclosed within outside the described cylinder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010039749A CN101763993A (en) | 2010-01-12 | 2010-01-12 | Low-voltage miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010039749A CN101763993A (en) | 2010-01-12 | 2010-01-12 | Low-voltage miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101763993A true CN101763993A (en) | 2010-06-30 |
Family
ID=42495090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010039749A Pending CN101763993A (en) | 2010-01-12 | 2010-01-12 | Low-voltage miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101763993A (en) |
-
2010
- 2010-01-12 CN CN201010039749A patent/CN101763993A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100630 |