CN104299864A - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN104299864A CN104299864A CN201410561091.6A CN201410561091A CN104299864A CN 104299864 A CN104299864 A CN 104299864A CN 201410561091 A CN201410561091 A CN 201410561091A CN 104299864 A CN104299864 A CN 104299864A
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- CN
- China
- Prior art keywords
- support
- snap close
- moving contact
- torsion spring
- circuit breaker
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- Breakers (AREA)
Abstract
Disclosed is a miniature circuit breaker. The miniature circuit breaker mainly overcomes the defects of existing miniature circuit breakers that the structure of a tripping mechanism is complicated, requirements for the assembly technique are high, reliability is low, productive efficiency is low, and due to the facts that restoration is achieved through tension springs mostly and restoration inaccuracy is caused easily after the tension springs are used for a long time, the service life of the circuit breakers is affected. The miniature circuit breaker is characterized in that a hinging column is sleeved with a latch torsion spring, the two ends of the latch torsion spring abut against a jump pin and a latch respectively, a moving contact hinging shaft is sleeved with a moving contact torsion spring, the two ends of the moving contact torsion spring abut against a moving contact and a support respectively, the hinging column is further sleeved with a support torsion spring which is arranged on the back portion of the support, and the two ends of the support torsion spring abut against the support and the inner wall of a shell. According to the miniature circuit breaker, the torsion springs are arranged between the jump pin and the latch, between the moving contact and the support and between the support and the inner wall of the shell for restoration, restoration is accurate, deviation is avoided, and the service life of the circuit breaker is effectively prolonged.
Description
Technical field
The invention belongs to field of circuit breakers, particularly miniature circuit breaker.
Background technology
Miniature circuit breaker has strong, the aesthetic in appearance feature such as small and exquisite of structure advanced person, dependable performance, breaking capacity; do the illumination of office building, house and similar building, the overload of distribution line and equipment and short-circuit protection; also can be used as the use of circuit infrequently make-break operation and conversion; be mainly used in the various places such as industry, business, high level and residential houses; tripping mechanism in present miniature circuit breaker adopts extension spring to realize reset mostly; but long easy appearance resets accurate between extension spring in use, thus affect circuit breaker useful life.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides miniature circuit breaker, mainly solve the tripping mechanism complex structure in present miniature circuit breaker, assembly technology require high, reliability is bad, the shortcoming that prouctiveness is low, owing to mostly adopting extension spring to realize reset, but between extension spring in use, long easy appearance resets accurate, thus affect the problem in circuit breaker useful life.
The technical solution adopted in the present invention is:
Miniature circuit breaker, comprise housing, contact system is provided with in described housing, tripping mechanism and arc quenching system, described tripping mechanism comprises support, snap close and tripping, described contact system comprises moving contact and fixed contact, described inner walls is provided with articulated column, described support and snap close are coaxially articulated with on articulated column, described support is respectively equipped with tripping jointed shaft and moving contact jointed shaft, described tripping and moving contact are articulated with on described tripping jointed shaft and moving contact jointed shaft respectively, described articulated column is arranged with snap close torsion spring, described snap close torsion spring two ends compress with tripping and snap close respectively, described moving contact jointed shaft is arranged with moving contact torsion spring, and described moving contact torsion spring two ends compress with moving contact and support respectively, described articulated column is also arranged with support torsion spring, and described support torsion spring is located at support back and two ends compress with support and inner walls respectively.
The first holding tank that described support also comprises support upper spacer, formed between support lower clapboard and the upper and lower dividing plate of described support, the second holding tank that described snap close comprises snap close upper spacer, formed between snap close lower clapboard and the upper and lower dividing plate of described snap close, correspondingly on the upper and lower dividing plate of described support and the upper and lower dividing plate of snap close be provided with the hinge hole passed for articulated column, described support upper spacer insert in described second holding tank and its upper and lower end face respectively spacer gap upper and lower with snap close coordinate; Described snap close lower clapboard inserts in described first holding tank and its upper and lower end face and coordinates with the upper and lower spacer gap of described support respectively.
Described pedestal comprises the first shell and second housing that removably connect, described first shell is provided with press block, described support is also provided with gap, described support torsion spring two ends compress with gap inwall and press block respectively, first and second shell described is equipped with hinged seat, and described articulated column two ends are arranged in described two hinged seats respectively.
Also comprise bimetal leaf and connecting rod, be also provided with chute bottom described snap close, described connecting rod one end coordinates with slide, and the other end at right angles bends and crosses over bimetal leaf and is placed in its side.
Described support is also provided with block, and described moving contact one end is pressed on moving contact sidewall, the other end with stick into block lower end and compress with described block inwall.
Described support, snap close and tripping are made up of engineering plastics.
Described support, snap close and tripping are made up of PC or PBT or PPS.
Described tripping mechanism comprises magnetictrip, described arc quenching system comprises arc control device, described magnetictrip comprises yoke and coil, described coil is located in yoke, corresponding with arc control device bottom described yoke, described yoke be three bread closed structures and its openend upward, described fixed contact one end is welded with coil, and the other end is corresponding with arc control device.
First and second shell described is equipped with mounting panel, and the laminating of described two mounting panels correspondence forms mount pad, and described yoke comprises the side plate that base plate and base plate two ends are bent to form, and described base plate forms location fit with described mount pad is adaptive.
The invention has the beneficial effects as follows: the invention provides miniature circuit breaker, its tripping mechanism structure is simple, assembly technology is less demanding, good reliability, prouctiveness is high, extension spring is replaced, namely between tripping and snap close, between moving contact and support owing to adopting torsion spring, adopt torsion spring between support and inner walls to reset, reset precisely, there will not be deviation, effectively extend the useful life of circuit breaker.
Accompanying drawing explanation
Fig. 1 is the perspective view of one embodiment of the invention.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the sectional perspective schematic diagram of one embodiment of the invention tripping mechanism.
Fig. 4 is Fig. 3 AA place cutaway view.
Fig. 5 is the stereogram of the support of one embodiment of the invention.
Fig. 6 is the stereogram of the snap close of one embodiment of the invention.
Fig. 7 is the sectional perspective schematic diagram of one embodiment of the invention tripping mechanism.
Fig. 8 is the stereogram of the support of one embodiment of the invention.
Fig. 9 is the schematic diagram of the second housing of one embodiment of the invention.
Figure 10 is the stereogram of the magnetictrip of one embodiment of the invention.
In figure, housing 1, support 2, snap close 3, tripping 4, articulated column 11, moving contact 5, tripping jointed shaft 21, moving contact jointed shaft 22, snap close torsion spring 13, moving contact torsion spring 23, support torsion spring 25, hinge hole 14, support upper spacer 26, support lower clapboard 27, first holding tank 28, snap close upper spacer 31, snap close lower clapboard 32, second holding tank 33.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described: as shown in the figure, miniature circuit breaker, comprise housing 1, contact system is provided with in described housing 1, tripping mechanism and arc quenching system, described tripping mechanism comprises support 2, snap close 3 and tripping 4, described contact system comprises moving contact 5 and fixed contact 51, described housing 1 inwall is provided with articulated column 11, described support 2 and snap close 3 are coaxially articulated with on articulated column 11, described support 2 is respectively equipped with tripping jointed shaft 21 and moving contact jointed shaft 22, described tripping 4 and moving contact 5 are articulated with on described tripping jointed shaft 21 and moving contact jointed shaft 22 respectively, described articulated column 11 is arranged with snap close torsion spring 13, described snap close torsion spring 13 two ends compress with tripping 4 and snap close 3 respectively, described moving contact jointed shaft 22 is arranged with moving contact torsion spring 23, and described moving contact torsion spring 23 two ends compress with moving contact 5 and support 2 respectively, described articulated column 11 is also arranged with support torsion spring 25, and described support torsion spring 25 is located at support 2 back and two ends compress with support 2 and housing 1 inwall respectively.Tripping mechanism operation principle is same as the prior art, repeat no more, respectively by snap close torsion spring reset lock, moving contact torsion spring is to the power of moving contact by a pretension, reset cradle is carried out by the support torsion spring being arranged on support back, reset cradle is carried out with respect to extension spring, because extension spring can because deviation appears pulling in the problems such as service life in pulling, affect useful life, but use torsion spring precisely to there will not be deviation due to the screens of torsion spring two ends, the invention provides miniature circuit breaker, its tripping mechanism structure is simple, assembly technology is less demanding, good reliability, prouctiveness is high, extension spring is replaced owing to adopting torsion spring, namely between tripping and snap close, between moving contact and support, adopt torsion spring between support and inner walls to reset, reset precisely, there will not be deviation, effectively extend the useful life of circuit breaker.
In the present invention, as shown in the figure, the first holding tank 28 that described support 2 also comprises support upper spacer 26, formed between support lower clapboard 27 and the upper and lower dividing plate of described support, the second holding tank 33 that described snap close 3 comprises snap close upper spacer 31, formed between snap close lower clapboard 32 and the upper and lower dividing plate of described snap close, correspondingly on the upper and lower dividing plate of described support and the upper and lower dividing plate of snap close be provided with the hinge hole 14 passed for articulated column 11, described support upper spacer 26 insert in described second holding tank 33 and its upper and lower end face respectively spacer gap upper and lower with snap close coordinate; Described snap close lower clapboard 32 inserts in described first holding tank 28 and its upper and lower end face and coordinates with the upper and lower spacer gap of described support respectively.Support upper spacer 26 is inserted and carries out spacing by the upper and lower dividing plate of snap close to the axial direction along articulated column of support upper spacer 26 in described second holding tank 33, and then carry out spacing to snap close lower clapboard 32 along the axial direction of articulated column by the upper and lower dividing plate of support by snap close lower clapboard 32 being inserted described first holding tank 28, structure is simple, snap close and support steady operation on the direction of articulated column axis can be realized, there will not be skew, result of use is good, ensure that stability when circuit breaker works.
In the present invention, as shown in the figure, described pedestal 1 comprises the first shell 15 and the second housing removably connected, described first shell 15 is provided with press block 16, described support 2 is also provided with gap 211, described support torsion spring 25 two ends compress with gap 211 inwall and press block 16 respectively, and first and second shell described is equipped with hinged seat 17, and described articulated column 11 two ends are arranged in described two hinged seats 17 respectively.Structure is simple, and locating effect is better, easy to use.
In the present invention, as shown in the figure, be also provided with chute 34 bottom described snap close 3, also comprise bimetal leaf 6 and connecting rod 35, described connecting rod 35 one end and chute 34 are slidably matched, and the other end at right angles bends and crosses over bimetal leaf 6 and is placed in its side.Coordinated with connecting rod by chute, location is more accurate, and result of use is better.
In the present invention, as shown in the figure, described support 2 is also provided with block 212, described moving contact torsion spring 23 one end is pressed on moving contact 5 sidewall, the other end with stick into block 212 lower end and compress with described block 212 inwall.Prevent moving contact torsion spring upper end from deviating from by the lower end of block 212, structure is simple, and result of use is better.
In the present invention, as shown in the figure, described support 2, snap close 3 and tripping 4 are made up of engineering plastics.
In the present invention, as shown in the figure, described support 2, snap close 3 and tripping 4 are made up of PC or PBT or PPS.Also can adopt PA, PC etc. herein, PC or PBT or PPS is made for preferred version.
In the present invention, as shown in the figure, described tripping mechanism comprises magnetictrip 52, described arc quenching system comprises arc control device 53, and described magnetictrip 52 comprises yoke 521 and coil 522, and described coil 522 is located in yoke 521, corresponding with arc control device 5 bottom described yoke 521, described yoke 521 be three bread closed structures and its openend upward, described fixed contact 51 one end is welded with coil 522, and the other end is corresponding with arc control device 53.Yoke is three bread closed structures and it is opening up, and the three bread closed structures said here are three is side plate, the structure of openings at one side, when electric arc produces, can be intercepted by yoke, relative to traditional downward opening yoke, can arc spark be stopped, prevent coil of burning.The invention provides miniature circuit breaker, its yoke is three bread closed structures and it is opening up, and electric arc can not burn out electricity circle, and coil and fixed contact are welding, and structure is simple, and wait convenient when mounted, result of use is better.
In the present invention, as shown in the figure, first and second shell described is equipped with mounting panel 131, the laminating of described two mounting panels 131 correspondence forms mount pad, described yoke 521 comprises the side plate that base plate 5211 and base plate 5211 two ends are bent to form, and described base plate 5211 forms location fit with described mount pad adaptation.Structure is simple, and easy to use, during installation, first coil welds with fixed contact, yoke is stuck on base, and then coil is placed in yoke again.
Embodiment should not be considered as limitation of the present invention, but any improvement done based on spirit of the present invention, all should within protection scope of the present invention.
Claims (9)
1. a miniature circuit breaker, comprise housing (1), described housing is provided with contact system in (1), tripping mechanism and arc quenching system, described tripping mechanism comprises support (2), snap close (3) and tripping (4), described contact system comprises moving contact (5) and fixed contact (51), described housing (1) inwall is provided with articulated column (11), described support (2) and snap close (3) are coaxially articulated with on articulated column (11), described support (2) is respectively equipped with tripping jointed shaft (21) and moving contact jointed shaft (22), described tripping (4) and moving contact (5) are articulated with on described tripping jointed shaft (21) and moving contact jointed shaft (22) respectively, it is characterized in that: described articulated column (11) is arranged with snap close torsion spring (13), described snap close torsion spring (13) two ends compress with tripping (4) and snap close (3) respectively, described moving contact jointed shaft (22) is arranged with moving contact torsion spring (23), and described moving contact torsion spring (23) two ends compress with moving contact (5) and support (2) respectively, described articulated column (11) is also arranged with support torsion spring (25), described support torsion spring (25) is located at support (2) back and two ends compress with support (2) and housing (1) inwall respectively.
2. miniature circuit breaker according to claim 1, it is characterized in that: described pedestal (1) comprises the first shell (15) and second housing that removably connect, described first shell (15) is provided with press block (16), described support (2) is also provided with gap (211), described support torsion spring (25) two ends compress with gap (211) inwall and press block (16) respectively, first and second shell described is equipped with hinged seat (17), described articulated column (11) two ends are arranged in described two hinged seats (17) respectively.
3. miniature circuit breaker according to claim 2, it is characterized in that: described support (2) also comprises support upper spacer (26), on support lower clapboard (27) and described support, the first holding tank (28) formed between lower clapboard, described snap close (3) comprises snap close upper spacer (31), on snap close lower clapboard (32) and described snap close, the second holding tank (33) formed between lower clapboard, on described support, on lower clapboard and snap close, on lower clapboard, correspondence is provided with the hinge hole (14) passed for articulated column (11), described support upper spacer (26) inserts in described second holding tank (33) and its upper and lower end face respectively with on snap close, lower clapboard matched in clearance, described snap close lower clapboard (32) is inserted in described first holding tank (28) and its upper and lower end face and is coordinated with the upper and lower spacer gap of described support respectively.
4. miniature circuit breaker according to claim 1, it is characterized in that: also comprise bimetal leaf (6) and connecting rod (35), described snap close (3) bottom is also provided with chute (34), described connecting rod (35) one end and chute (34) are slidably matched, and the other end at right angles bends and crosses over bimetal leaf (6) and is placed in its side.
5. miniature circuit breaker according to claim 3, it is characterized in that: described support (2) is also provided with block (212), described moving contact torsion spring (23) one end is pressed on moving contact (5) sidewall, the other end with stick into block (212) lower end and compress with described block (212) inwall.
6. miniature circuit breaker according to claim 1, is characterized in that: described support (2), snap close (3) and tripping (4) are made up of engineering plastics.
7. miniature circuit breaker according to claim 6, is characterized in that: described support (2), snap close (3) and tripping (4) are made up of PC or PBT or PPS.
8. miniature circuit breaker according to claim 2, it is characterized in that: described tripping mechanism comprises magnetictrip (52), described arc quenching system comprises arc control device (53), described magnetictrip (52) comprises yoke (521) and coil (522), described coil (522) is located in yoke (521), described yoke (521) bottom is corresponding with arc control device (5), described yoke (521) be three bread closed structures and its openend upward, described fixed contact (51) one end is welded with coil (522), and the other end is corresponding with arc control device (53).
9. miniature circuit breaker according to claim 8, it is characterized in that: first and second shell described is equipped with mounting panel (131), the laminating of described two mounting panels (131) correspondence forms mount pad, described yoke (521) comprises the side plate that base plate (5211) and base plate (5211) two ends are bent to form, and described base plate (5211) forms location fit with described mount pad adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561091.6A CN104299864B (en) | 2014-10-21 | 2014-10-21 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561091.6A CN104299864B (en) | 2014-10-21 | 2014-10-21 | Miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104299864A true CN104299864A (en) | 2015-01-21 |
| CN104299864B CN104299864B (en) | 2016-01-27 |
Family
ID=52319545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410561091.6A Active CN104299864B (en) | 2014-10-21 | 2014-10-21 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104299864B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109886A (en) * | 2018-01-18 | 2018-06-01 | 温州奥来电器有限公司 | A kind of breaker |
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| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动系统公司 | Switching mechanism of protective switch |
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN102881530A (en) * | 2012-08-28 | 2013-01-16 | 浙江天正电气股份有限公司 | Operating mechanism and miniature circuit breaker |
| CN203288439U (en) * | 2013-06-05 | 2013-11-13 | 温州大观电气有限公司 | Switch tripping device |
| CN103745892A (en) * | 2014-01-16 | 2014-04-23 | 徐波 | Operation mechanism of small-size breaker |
| CN204118009U (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
-
2014
- 2014-10-21 CN CN201410561091.6A patent/CN104299864B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动系统公司 | Switching mechanism of protective switch |
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN102881530A (en) * | 2012-08-28 | 2013-01-16 | 浙江天正电气股份有限公司 | Operating mechanism and miniature circuit breaker |
| CN203288439U (en) * | 2013-06-05 | 2013-11-13 | 温州大观电气有限公司 | Switch tripping device |
| CN103745892A (en) * | 2014-01-16 | 2014-04-23 | 徐波 | Operation mechanism of small-size breaker |
| CN204118009U (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109886A (en) * | 2018-01-18 | 2018-06-01 | 温州奥来电器有限公司 | A kind of breaker |
| CN108109886B (en) * | 2018-01-18 | 2024-04-26 | 温州奥来电器有限公司 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104299864B (en) | 2016-01-27 |
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Address after: Yueqing East Street North Baixiang Town Industrial Zone 325603 Bai TA Wang Zhejiang province Wenzhou City No. 545 Patentee after: Garcia electronic appliance Limited by Share Ltd Address before: Yueqing East Street North Baixiang Town Industrial Zone 325603 Bai TA Wang Zhejiang province Wenzhou City No. 545 Patentee before: GACIA ELECTRICAL APPLIANCE CO., LTD. |