CN103632897A - Operating mechanism of miniature circuit breaker - Google Patents
Operating mechanism of miniature circuit breaker Download PDFInfo
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- CN103632897A CN103632897A CN201310571251.0A CN201310571251A CN103632897A CN 103632897 A CN103632897 A CN 103632897A CN 201310571251 A CN201310571251 A CN 201310571251A CN 103632897 A CN103632897 A CN 103632897A
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- contact
- snap close
- tripping
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- circuit breaker
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Abstract
The invention relates to an operating mechanism of a miniature circuit breaker. The operating mechanism comprises a contact carrier, a jump catch, a lock catch, a moving contact, a U-shaped rod and a handle, wherein a shaft pin which is hinged to a circuit breaker casing is arranged on the contact carrier, a jump catch groove is formed in the contact carrier, the jump catch is arranged in the jump catch groove in a sliding way, a lock catch hole is formed in the contact carrier, the lock catch is hinged with the lock catch hole, a lock rod is formed at one end of the lock catch, a step by which the jump catch is pressed against is formed at the front end of the lock rod, a lock catch torsional spring which is tend to bounce up is arranged between the outer side of the lock catch and the outer side of the contact carrier, a contact shaft is formed on the contact carrier, the moving contact is hinged to the contact shaft, a contact torsional spring is sleeved on the contact shaft, the two ends of the contact torsional spring are respectively connected to the moving contact and the contact carrier, and the handle is connected with the jump catch by the U-shaped rod. The operating mechanism has the advantages of simple structure, few mechanical parts, simplicity in assembly and higher stability due to the adoption of the sliding mode of the jump catch in the groove.
Description
Technical field
The present invention relates to a kind of assembly of circuit breaker, especially a kind of operating mechanism of miniature circuit breaker.
Background technology
Miniature circuit breaker is a kind of conventional electric switch, is mainly used in the various places such as industry, business, residential houses.Miniature circuit breaker mainly by operating mechanism come control circuit deciliter, operating mechanism in existing miniature circuit breaker is mainly comprised of snap close, tripping, support, " U " type connecting rod and handle, between support and housing, be provided with an extension spring, moving contact is fixed on support; Tripping is clamped in the upper right corner of support and is hinged with support, and snap close is hinged on the left side central portion of support and block mutually with tripping the upper end of snap close, between tripping and handle, by " U " type connecting rod, is connected.There is following defect in the operating mechanism of this miniature circuit breaker: 1. tripping is hinged on support and easily drops, and especially, in assembling process, affects the production efficiency of product, and tripping also can be dropped when taking circuit breaker apart and overhaul, inconvenient maintenance.2. handle is when closure state, between moving contact and fixed contact, form certain pressure, need to reach good electrical connection properties, because moving contact is fixed on support, between moving contact and support for being rigidly connected, compensation very close to each other between moving contact and fixed contact, therefore, the installation accuracy of moving contact and fixed contact is had relatively high expectations, so just can avoid moving contact and fixed contact when closure, to produce minim gap, position accuracy demand is higher, and assembly difficulty is large.Snap close back-moving spring install inconvenient, snap close reduction torsion spring fatiguability and following the string, useful life is short.
Summary of the invention
For above-mentioned reasons, the object of the present invention is to provide a kind of operating mechanism that assembles the miniature circuit breaker of easy, compact conformation.
For achieving the above object, the present invention adopts a kind of operating mechanism of miniature circuit breaker, comprise contact supporting, tripping, snap close, moving contact, U-shaped bar, handle, inner side, contact supporting middle part forms centre bore, in centre bore, place and be useful on the central shaft being hinged on case for circuit breaker, the tripping groove of circular arc is formed at contact supporting top, tripping is arranged on slippage in tripping groove, the arc surface that the upper side of tripping suits mutually for the upper cell wall with tripping groove, contact supporting middle part forms bonnet lock hole near outside, snap close is hinged in bonnet lock hole, snap close upper end forms a locking bar towards tripping, locking bar front end forms the step that withstands tripping, between snap close outside and contact supporting outside, be provided with the snap close torsion spring that trend flicks, the conglobate contact installing hole of contact supporting lower end shape, the lower end hole wall of contact installing hole forms opening, moving contact upper end forms the circular installation sheet suitable with contact installing hole, the installation sheet of moving contact is arranged in contact installing hole, the arranged outside of installation sheet has contact torsion spring, contact torsion spring is limited in contact installing hole, contact torsion spring two ends are connected on the hole wall of moving contact and contact installing hole, handle is connected with tripping by U-shaped bar.
The beneficial effect of foregoing invention is that all component of operating mechanism is installed on contact supporting, easy to assembly; Tripping is arranged in the tripping groove on contact supporting, makes tripping be difficult for dropping out in assembling and maintenance process; Contact torsion spring is set on moving contact, at handle, during in closure state, between moving contact and fixed contact, by contact torsion spring, form certain precompression, make between moving contact and fixed contact, to there is certain backlash compensation, lower to moving contact and fixed contact position accuracy demand, easily assembling; Moving contact is arranged in the contact installing hole of contact supporting together with contact torsion spring, position-limiting action by contact installing hole hole wall is by moving contact and contact torsion spring is spacing in contact installing hole, rotates, and contact installing hole also can play position-limiting action when contact torsion spring generation deformation.
The both sides cell wall that the present invention is further set to described tripping groove forms stopper slot, and the corresponding stopper slot in tripping both sides forms the guide vane end stop protruding, and guide vane end stop is stuck in stopper slot.Described tripping groove forms the tripping installation position suitable with the maximum secting area of tripping near one end of handle.The bottom surface of described tripping forms central authorities higher than the inclined-plane of both sides.
Tripping is installed in tripping groove by tripping installation position, and is engaged in slippage in tripping groove by the guide vane end stop in tripping and stopper slot spacing, and assembling is simple, accurate positioning.The bottom surface of tripping groove is that inclined-plane has reduced the frictional force between tripping bottom surface and tripping groove bottom, makes the slippage of tripping more smooth and easy.
The edge that the present invention is further set to the lower end hole wall of described contact installing hole forms the locating piece of a protrusion around circumference, the distance of locating piece and contact installing hole bottom surface is slightly larger than the width sum of moving contact installation sheet and contact torsion spring.Locating piece can prevent that moving contact and contact torsion spring from deviating from, and the setting position of locating piece can not have influence on the rotation of moving contact and contact torsion spring.
The present invention is further set to the bonnet lock hole on corresponding contact supporting on described snap close and forms snap close hinge bar, and the top of snap close hinge bar forms barb, and snap close is hinged on contact supporting by snap close hinge bar, and barb is hooked in snap close hinge bar in bonnet lock hole.Barb on snap close can, by stable being hinged on contact supporting of snap close, be easy to assembling.
The present invention is further set to form on described snap close a plurality of hollow holes.The structure of expecting steathily of hollow out can reduce material cost.
The present invention is formed centrally contact backstay in being further set in described contact installing hole, and the corresponding contact backstay in installation sheet center of moving contact forms contact location hole, and contact backstay is through in contact location hole.Contact backstay plays the assist location effect to moving contact.
The present invention is further set to described contact supporting upside and forms switch index plane.
The present invention is further set to described snap close torsion spring one end and is fixed on contact supporting outside, and the other end withstands on snap close outside.Snap close torsion spring is easy for installation, is difficult for dropping.
The present invention is further set to be provided with pull bar on described snap close, and pull bar is hinged on snap close, latches in pull bar and forms protruding pull bar position limiting structure around.
Accompanying drawing explanation
Fig. 1 is the front view of the specific embodiment of the invention.
Fig. 2 is the scheme of installation of the specific embodiment of the invention.
Fig. 3 is the explosive view of the specific embodiment of the invention.
Fig. 4 is the explosive view of the specific embodiment of the invention.
Fig. 5 is the stereogram of contact supporting of the present invention.
Fig. 6 is snap close schematic diagram of the present invention.
Fig. 7 is tripping schematic diagram of the present invention.
Embodiment
As shown in Fig. 1-7, embodiments of the invention are operating mechanisms of a kind of miniature circuit breaker, comprise contact supporting 1, tripping 2, snap close 3, moving contact 4, U-shaped bar 5, handle 6, contact supporting 1 upper end forms switch index plane 11, contact supporting 1 inner side, middle part forms centre bore, in centre bore, place and be useful on the central shaft 71 being hinged on case for circuit breaker 7, contact supporting 1 inner side, upper end is connected with extension spring 8, and extension spring 8 other ends are connected on shell 7.The tripping groove 12 of circular arc is formed at contact supporting 1 top, the arc surface 23 that the upper side of tripping 2 suits mutually for the upper cell wall with tripping groove 12, the cell wall of tripping groove 12 forms stopper slot 13, tripping upper side wall tripping groove 13 forms the tripping installation position 16 suitable with the maximum secting area of tripping 2 near one end of handle 6, the corresponding stopper slot 13 in tripping 2 both sides forms the guide vane end stop 21 protruding, the bottom surface of tripping 2 forms central authorities higher than the inclined-plane 22 of both sides, and tripping 2 is arranged in tripping groove 12 and is stuck in the interior slippage of stopper slot 13 by the guide vane end stop 21 in tripping 2.Contact supporting 1 middle part forms bonnet lock hole 14 near outside, bonnet lock hole 14 on snap close 3 on corresponding contact supporting 1 forms snap close hinge bar 34, the top of snap close hinge bar 34 forms barb 35, snap close 3 is hinged on contact supporting 1 by snap close hinge bar 34, barb 35 is hooked in snap close hinge bar 34 in bonnet lock hole 14, snap close 3 upper ends form a locking bar 31 towards tripping 2, locking bar 31 front ends form the step 32 that withstands tripping 2, what on snap close 3, form a plurality of hollow outs expects hole 33 steathily, between snap close 3 outsides and contact supporting 1 outside, be provided with the snap close torsion spring 15 that trend flicks, snap close torsion spring 15 one end are fixed on contact supporting 1 outside, the other end withstands on snap close 3 outsides, on snap close 3, be provided with pull bar 36, pull bar 36 is hinged on snap close 3, snap close 3 forms protruding pull bar position limiting structure 37 around at pull bar 36, pull bar 36 is overlapped on bimetal leaf 9, the both sides of snap close 3 form respectively multistage splicing bar 38 and multistage splicing groove 39, the adaptive multistage splicing for circuit breaker mutually of multistage splicing bar 38 and multistage splicing groove 39.The conglobate contact installing hole 17 of contact supporting 1 lower end shape, the lower end hole wall of contact installing hole 17 forms opening 18, moving contact 4 upper ends form the circular installation sheet 41 suitable with contact installing hole 17, the installation sheet 41 of moving contact 4 is arranged in contact installing hole 17, the arranged outside of installation sheet 41 has contact torsion spring 42, contact torsion spring 42 is limited in contact installing hole 17, contact torsion spring 42 two ends are connected on the upper end hole wall of moving contact 4 and contact installing hole 17, opening 18 edges of the lower end hole wall of contact installing hole 17 form the locating piece 19 of a protrusion around circumference, the distance of locating piece 19 and contact installing hole 17 bottom surfaces is slightly larger than the width sum of moving contact installation sheet 41 and contact torsion spring 42, during contact installing hole 17 is interior, be formed centrally contact backstay 10, the corresponding contact backstay 10 in installation sheet 41 centers of moving contact 4 forms contact location hole 43, contact backstay 10 is through in contact location hole 43.Handle 6 is connected with tripping 2 by U-shaped bar 5.
Claims (10)
1. the operating mechanism of a miniature circuit breaker, it is characterized in that: operating mechanism comprises contact supporting, tripping, snap close, moving contact, U-shaped bar, handle, inner side, contact supporting middle part forms centre bore, in centre bore, place and be useful on the central shaft being hinged on case for circuit breaker, the tripping groove of circular arc is formed at contact supporting top, tripping is arranged on slippage in tripping groove, the arc surface that the upper side of tripping suits mutually for the upper cell wall with tripping groove, contact supporting middle part forms bonnet lock hole near outside, snap close is hinged in bonnet lock hole, snap close upper end forms a locking bar towards tripping, locking bar front end forms the step that withstands tripping, between snap close outside and contact supporting outside, be provided with the snap close torsion spring that trend flicks, the conglobate contact installing hole of contact supporting lower end shape, the lower end hole wall of contact installing hole forms opening, moving contact upper end forms the circular installation sheet suitable with contact installing hole, the installation sheet of moving contact is arranged in contact installing hole, the arranged outside of installation sheet has contact torsion spring, contact torsion spring is limited in contact installing hole, contact torsion spring two ends are connected on the hole wall of moving contact and contact installing hole, handle is connected with tripping by U-shaped bar.
2. the operating mechanism of a kind of miniature circuit breaker according to claim 1, is characterized in that: the cell wall of described tripping groove forms stopper slot, and the corresponding stopper slot in tripping both sides forms the guide vane end stop protruding, and guide vane end stop is stuck in stopper slot.
3. the operating mechanism of a kind of miniature circuit breaker according to claim 2, is characterized in that: the bottom surface of described tripping forms central authorities higher than the inclined-plane of both sides.
4. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: the edge of the lower end hole wall of described contact installing hole forms the locating piece of a protrusion around circumference, the distance of locating piece and contact installing hole bottom surface is slightly larger than the width sum of moving contact and contact torsion spring.
5. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: the bonnet lock hole on described snap close on corresponding contact supporting forms snap close hinge bar, the top of snap close hinge bar forms barb, snap close is hinged on contact supporting by snap close hinge bar, and barb is hooked in snap close hinge bar in bonnet lock hole.
6. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: on described snap close, form a plurality of hollow holes.
7. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: in described contact installing hole, be formed centrally contact backstay, the corresponding contact backstay in installation sheet center of moving contact forms contact location hole, and contact backstay is through in contact location hole.
8. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: described contact supporting upside forms switch index plane.
9. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: described snap close torsion spring one end is fixed on contact supporting outside, the other end withstands on snap close outside.
10. according to the operating mechanism of a kind of miniature circuit breaker described in claim 1 or 2 or 3, it is characterized in that: on described snap close, be provided with pull bar, pull bar is hinged on snap close, latch in pull bar and form protruding pull bar position limiting structure around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571251.0A CN103632897B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mechanism of miniature circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571251.0A CN103632897B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mechanism of miniature circuit breaker |
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| CN103632897A true CN103632897A (en) | 2014-03-12 |
| CN103632897B CN103632897B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310571251.0A Active CN103632897B (en) | 2013-10-31 | 2013-10-31 | A kind of operating mechanism of miniature circuit breaker |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261534A (en) * | 2015-11-06 | 2016-01-20 | 派森特电气有限公司 | Circuit breaker |
| CN105742128A (en) * | 2016-04-14 | 2016-07-06 | 乐清市智顺电气有限公司 | Operating mechanism of electrical protection apparatus |
| CN106449286A (en) * | 2015-08-11 | 2017-02-22 | 浙江正泰电器股份有限公司 | Circuit breaker installing structure and assembling method |
| CN107546073A (en) * | 2016-06-23 | 2018-01-05 | 上海良信电器股份有限公司 | Miniature circuit breaker operating mechanism structure-improved |
| CN108807096A (en) * | 2018-07-11 | 2018-11-13 | 浙江诺科电气科技股份有限公司 | The operating mechanism of miniature circuit breaker |
| CN109326495A (en) * | 2018-11-16 | 2019-02-12 | 浙江天正电气股份有限公司 | It is a kind of can quick-make miniature circuit breaker |
| CN111952130A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Double-breakpoint mechanism |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
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| JP2009230890A (en) * | 2008-03-19 | 2009-10-08 | Nitto Electric Works Ltd | Wiring circuit breaker |
| CN202259079U (en) * | 2011-09-13 | 2012-05-30 | 上海诺雅克电气有限公司 | Operating mechanism of small-sized 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 |
| CN203536330U (en) * | 2013-10-31 | 2014-04-09 | 上海永继电气股份有限公司 | Operation mechanism of small size breaker |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009230890A (en) * | 2008-03-19 | 2009-10-08 | Nitto Electric Works Ltd | Wiring circuit breaker |
| CN202259079U (en) * | 2011-09-13 | 2012-05-30 | 上海诺雅克电气有限公司 | Operating mechanism of small-sized 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 |
| CN203536330U (en) * | 2013-10-31 | 2014-04-09 | 上海永继电气股份有限公司 | Operation mechanism of small size breaker |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449286B (en) * | 2015-08-11 | 2019-05-28 | 浙江正泰电器股份有限公司 | The mounting structure and assembly method of breaker |
| CN106449286A (en) * | 2015-08-11 | 2017-02-22 | 浙江正泰电器股份有限公司 | Circuit breaker installing structure and assembling method |
| CN105261534A (en) * | 2015-11-06 | 2016-01-20 | 派森特电气有限公司 | Circuit breaker |
| CN105742128A (en) * | 2016-04-14 | 2016-07-06 | 乐清市智顺电气有限公司 | Operating mechanism of electrical protection apparatus |
| CN107546073A (en) * | 2016-06-23 | 2018-01-05 | 上海良信电器股份有限公司 | Miniature circuit breaker operating mechanism structure-improved |
| CN107546073B (en) * | 2016-06-23 | 2019-12-27 | 上海良信电器股份有限公司 | Improved structure of operating mechanism for miniature circuit breaker |
| CN108807096A (en) * | 2018-07-11 | 2018-11-13 | 浙江诺科电气科技股份有限公司 | The operating mechanism of miniature circuit breaker |
| CN108807096B (en) * | 2018-07-11 | 2024-05-14 | 浙江诺科电气科技股份有限公司 | Operating mechanism of miniature circuit breaker |
| CN109326495A (en) * | 2018-11-16 | 2019-02-12 | 浙江天正电气股份有限公司 | It is a kind of can quick-make miniature circuit breaker |
| CN109326495B (en) * | 2018-11-16 | 2023-12-29 | 浙江天正电气股份有限公司 | But quick closing's miniature circuit breaker |
| CN111952130A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Double-breakpoint mechanism |
| CN111952130B (en) * | 2020-06-29 | 2023-10-03 | 深圳微羽智能科技有限公司 | Double breakpoint mechanism |
| CN113745065A (en) * | 2021-08-19 | 2021-12-03 | 浙江合兴电工有限公司 | Small-sized circuit breaker |
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| CN103632897B (en) | 2016-03-09 |
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Denomination of invention: Operating mechanism of a small circuit breaker Effective date of registration: 20230922 Granted publication date: 20160309 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: SHANGHAI YONGJI ELECTRICAL HOLDING Co.,Ltd. Registration number: Y2023310000588 |