CN204011327U - A kind of miniature circuit breaker of junction block auxiliary extinction of arc - Google Patents

A kind of miniature circuit breaker of junction block auxiliary extinction of arc Download PDF

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Publication number
CN204011327U
CN204011327U CN201420427923.0U CN201420427923U CN204011327U CN 204011327 U CN204011327 U CN 204011327U CN 201420427923 U CN201420427923 U CN 201420427923U CN 204011327 U CN204011327 U CN 204011327U
Authority
CN
China
Prior art keywords
arc
circuit breaker
control device
miniature circuit
binding post
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.)
Withdrawn - After Issue
Application number
CN201420427923.0U
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Chinese (zh)
Inventor
高文乐
叶志伟
王志勇
薛旭静
张勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUATONG ELECTROMECHANICAL Co Ltd
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HUATONG ELECTROMECHANICAL Co Ltd
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Priority to CN201420427923.0U priority Critical patent/CN204011327U/en
Application granted granted Critical
Publication of CN204011327U publication Critical patent/CN204011327U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

A kind of miniature circuit breaker of junction block auxiliary extinction of arc.Solved the poor problem of existing miniature circuit breaker arc quenching effect.It comprises housing, in described housing, be provided with arc control device and binding post, described housing is provided with for by arc control device and the separated dividing plate of binding post, described arc control device are having air dispelling hole near binding post place, described dividing plate is provided with the intercommunicating pore corresponding with air dispelling hole, described binding post comprises for the wire frame of accommodating wire with by wire and is fixed on the binding post on wire frame, is at least provided with an overfolw hole communicating with intercommunicating pore on described wire frame.The beneficial effects of the utility model are, on dividing plate, set up intercommunicating pore, on wire frame, be provided with overfolw hole, make the heat that produces in arc control device can be outside binding post is dispersed into housing, thereby the heat of having accelerated arc control device be discharged the arc extinction performance that guarantees product.

Description

A kind of miniature circuit breaker of junction block auxiliary extinction of arc
Technical field
The utility model relates to a kind of circuit breaker, is specifically related to a kind of miniature circuit breaker of junction block auxiliary extinction of arc.
Background technology
Miniature circuit breaker is used as office building, house and the similarly overload of illumination, distribution line and the equipment of building and short-circuit protection; also can be used as the use of the frequent make-break operation of circuit and conversion; be mainly used in the various places such as industry, business, high level and residential houses, there is strong, the aesthetic in appearance feature such as small and exquisite of structure advanced person, dependable performance, breaking capacity.Common small sized circuit breaker is by mechanical method, the moving contact of miniature circuit breaker and fixed contact to be separated while cut-offfing circuit.While closing a floodgate, with contrary mechanical movement, make moving contact and fixed contact closure.When connecting and cut-off the operation of load circuit, between fixed contact and moving contact, will produce electric arc.The electric arc that interrupting process produces is much more serious than making process.When the electric current cut-offfing is very large, while particularly cut-offfing short circuit, electric arc is very large, and open circuit is often very difficult.
Thereby existing miniature circuit breaker is owing to existing voltage to form electric arc between dynamic and static contact in separation process, electric arc enters the arc control device of arc quenching system under the effects such as magnetic blow-out effect and aerodynamic force, the electric arc that enters arc control device is also claimed metal gate sheet to be divided into the short arc of some series connection by the arc extinguishing grid pieces being equidistantly spaced along electric arc direction in arc control device, thereby make electric arc fast cooling and improve rapidly arc drop, reach the object of blow-out.Electric arc when being extinguished, can produce heat in arc control device, and if these heats can not leave in time, can affect follow-up arc extinguishing.
Summary of the invention
For solving the poor problem of existing miniature circuit breaker arc quenching effect in background technology, the utility model provides a kind of miniature circuit breaker of junction block auxiliary extinction of arc.
The technical solution of the utility model is: a kind of miniature circuit breaker of junction block auxiliary extinction of arc, comprise housing, in described housing, be provided with contact system, arc quenching system and binding post, described arc quenching system comprises arc control device and is located at the multi-disc arc extinguishing grid pieces in arc control device, described housing is provided with for by arc control device and the separated dividing plate of binding post, described contact system comprises fixed contact and moving contact, on described fixed contact, be connected with arc striking piece, described arc striking piece is located at the upper end of arc control device, described arc control device are having air dispelling hole near binding post place, described dividing plate is provided with the intercommunicating pore corresponding with air dispelling hole, described binding post comprises for the wire frame of accommodating wire with by wire and is fixed on the binding post on wire frame, on described wire frame, be at least provided with an overfolw hole communicating with intercommunicating pore.
As a kind of improvement of the present utility model, described overfolw hole is L-type.
As further improvement of the utility model, described overfolw hole has two.
As further improvement of the utility model, being distributed on wire frame of described overfolw hole symmetry.
As further improvement of the utility model, described housing is provided with through hole, between described through hole and the air dispelling hole of arc control device, is provided with heat dissipation channel, in described heat dissipation channel, is provided with flash barrier, and described flash barrier is provided with air vent hole.
As further improvement of the utility model, in described housing, be provided with heat radiation division board, described heat radiation division board is along heat dissipation channel setting and heat dissipation channel is divided into multiple tracks.
As further improvement of the utility model, described heat radiation division board is provided with bootstrap block, and described bootstrap block is corresponding with the intercommunicating pore on dividing plate.
As further improvement of the utility model, described flash barrier is S-shaped and be integral type structure.
As further improvement of the utility model, in described housing, be provided with magnetic patch, described magnetic patch is located on arc striking piece and is corresponding with moving contact.
As further improvement of the utility model, described arc striking piece is provided with U-shaped portion, and described magnetic patch and the U-shaped portion on arc striking piece fit.
The beneficial effects of the utility model are, on dividing plate, set up intercommunicating pore, on wire frame, be provided with overfolw hole, make the heat that produces in arc control device can be outside binding post is dispersed into housing, thereby the heat of having accelerated arc control device be discharged the arc extinction performance that guarantees product.The utility model also has simple in structure, produces, easy to assembly dependable performance, the advantage such as arc quenching effect is good.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Accompanying drawing 2 is the structural representation in accompanying drawing 1 middle shell 1.
Accompanying drawing 3 is the front view of accompanying drawing 2.
Accompanying drawing 4 is the structural representation of wire frame 41 in accompanying drawing 3.
Accompanying drawing 5 is the structure enlarged drawing at I place in accompanying drawing 2.
In figure, 1, housing; 11, through hole; 12, heat dissipation channel; 13, heat radiation division board; 131, bootstrap block; 2, contact system; 21, fixed contact; 22, moving contact; 23, arc striking piece; 231, U-shaped portion; 3, arc quenching system; 31, arc control device; 311, air dispelling hole; 32, arc extinguishing grid pieces; 4, binding post; 41, wire frame; 411, overfolw hole; 42, binding post; 5, dividing plate; 51, intercommunicating pore; 6, flash barrier; 61, air vent hole; 7, magnetic patch.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
By Fig. 1 in conjunction with Fig. 2, 3, 4, shown in 5, a kind of miniature circuit breaker of junction block auxiliary extinction of arc, comprise housing 1, in described housing 1, be provided with contact system 2, arc quenching system 3 and binding post 4, described arc quenching system 3 comprises arc control device 31 and is located at the multi-disc arc extinguishing grid pieces 32 in arc control device 31, described housing 1 is provided with for by arc control device 31 and the separated dividing plate 5 of binding post 4, described contact system 2 comprises fixed contact 21 and moving contact 22, on described fixed contact 21, be connected with arc striking piece 23, described arc striking piece 23 is located at the upper end of arc control device 31, described arc control device 31 are having air dispelling hole 311 near binding post 4 places, described dividing plate 5 is provided with the intercommunicating pore corresponding with air dispelling hole 311 51, described binding post 4 comprises for the wire frame 41 of accommodating wire with by wire and is fixed on the binding post 42 on wire frame 41, on described wire frame 41, be at least provided with an overfolw hole 411 communicating with intercommunicating pore 51.The beneficial effects of the utility model are, on dividing plate, set up intercommunicating pore, on wire frame, be provided with overfolw hole, make the heat that produces in arc control device can be outside binding post is dispersed into housing, thereby the heat of having accelerated arc control device be discharged the arc extinction performance that guarantees product.The utility model also has simple in structure, produces, easy to assembly dependable performance, the advantage such as arc quenching effect is good.
Described overfolw hole 411 is L-type.Certainly, overfolw hole can be also other shapes.In particular, described overfolw hole 411 has two, and certainly overfolw hole can be one or three, four etc.In particular, when overfolw hole is even number, being distributed on wire frame 41 of described overfolw hole 411 symmetries, such structure is convenient to the installation of wire frame.
Described housing 1 is provided with through hole 11, between described through hole 11 and the air dispelling hole 311 of arc control device 31, is provided with heat dissipation channel 12, in described heat dissipation channel 12, is provided with flash barrier 6, and described flash barrier 6 is provided with air vent hole 61.Specifically, be provided with heat radiation division board 13 in described housing 1, described heat radiation division board 13 arranges and heat dissipation channel 12 is divided into multiple tracks along heat dissipation channel 12.On housing, set up through hole, through hole is connected with arc control device, the heat that arc control device produce when arc extinguishing can be discharged outside housing fast, guarantee the arc extinction performance of product, set up flash barrier simultaneously, made a small amount of electric arc with heat discharge, after flash barrier, played the effect of blow-out, air vent hole has guaranteed being communicated with of housing through-hole and arc control device, is convenient to the effect of the discharge of heat and the arc extinguishing that can get up.In particular, described flash barrier 6 is S-shaped and be integral type structure.Such structure is convenient to the installation of flash barrier.Certainly, in actual production process, flash barrier can be multi-disc, and multi-disc flash barrier parallel equidistant is located in heat dissipation channel.
Described heat radiation division board 13 is provided with bootstrap block 131, and described bootstrap block 131 is corresponding with the intercommunicating pore 51 on dividing plate 5.Such structure can be discharged housing through the overfolw hole of wire frame from the intercommunicating pore of dividing plate by leader heat.
In described housing 1, be provided with magnetic patch 7, described magnetic patch 7 is located on arc striking piece 23 and is corresponding with moving contact 22.Specifically, described arc striking piece 23 is provided with U-shaped portion 231, and described magnetic patch 7 fits with the U-shaped portion 231 on arc striking piece 23.In particular, described magnetic patch adopts ndfeb magnet.The utility model is provided with magnetic patch, make product when the dynamic and static contact of disjunction produces electric arc, magnetic patch can produce magnetic force and make arc energy enter sooner, more reliably arc control device, increase the striking effect of product, and also have with magnetic patch that arc striking piece fits that structure is simpler, production cost is lower, striking better effects if.
Every technical staff's notice: although the utility model describes according to above-mentioned embodiment; but invention of the present utility model is thought advantage and is wanted to be not limited in this utility model; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.

Claims (10)

1. the miniature circuit breaker of a junction block auxiliary extinction of arc, comprise housing (1), in described housing (1), be provided with contact system (2), arc quenching system (3) and binding post (4), described arc quenching system (3) comprises arc control device (31) and is located at the multi-disc arc extinguishing grid pieces (32) in arc control device (31), described housing (1) is provided with for by arc control device (31) and the separated dividing plate of binding post (4) (5), described contact system (2) comprises fixed contact (21) and moving contact (22), on described fixed contact (21), be connected with arc striking piece (23), described arc striking piece (23) is located at the upper end of arc control device (31), it is characterized in that: described arc control device (31) are locating to have air dispelling hole (311) near binding post (4), described dividing plate (5) is provided with the intercommunicating pore (51) corresponding with air dispelling hole (311), described binding post (4) comprises the wire frame (41) for accommodating wire and wire is fixed on to the binding post (42) on wire frame (41), on described wire frame (41), be at least provided with an overfolw hole (411) communicating with intercommunicating pore (51).
2. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 1, is characterized in that described overfolw hole (411) is L-type.
3. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 1 and 2, is characterized in that described overfolw hole (411) has two.
4. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 3, is characterized in that symmetrical being distributed on wire frame (41) of described overfolw hole (411).
5. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 1, it is characterized in that described housing (1) is provided with through hole (11), between the air dispelling hole (311) of described through hole (11) and arc control device (31), be provided with heat dissipation channel (12), in described heat dissipation channel (12), be provided with flash barrier (6), described flash barrier (6) is provided with air vent hole (61).
6. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 5, it is characterized in that being provided with heat radiation division board (13) in described housing (1), described heat radiation division board (13) arranges and heat dissipation channel (12) is divided into multiple tracks along heat dissipation channel (12).
7. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 6, is characterized in that described heat radiation division board (13) is provided with bootstrap block (131), and described bootstrap block (131) is corresponding with the intercommunicating pore (51) on dividing plate (5).
8. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 5, is characterized in that described flash barrier (6) is S-shaped and is integral type structure.
9. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 1, is characterized in that being provided with magnetic patch (7) in described housing (1), and it is upper and corresponding with moving contact (22) that described magnetic patch (7) is located at arc striking piece (23).
10. the miniature circuit breaker of a kind of junction block auxiliary extinction of arc according to claim 9, is characterized in that described arc striking piece (23) is provided with U-shaped portion (231), and described magnetic patch (7) fits with the U-shaped portion (231) on arc striking piece (23).
CN201420427923.0U 2014-07-31 2014-07-31 A kind of miniature circuit breaker of junction block auxiliary extinction of arc Withdrawn - After Issue CN204011327U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420427923.0U CN204011327U (en) 2014-07-31 2014-07-31 A kind of miniature circuit breaker of junction block auxiliary extinction of arc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420427923.0U CN204011327U (en) 2014-07-31 2014-07-31 A kind of miniature circuit breaker of junction block auxiliary extinction of arc

Publications (1)

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CN204011327U true CN204011327U (en) 2014-12-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143492A (en) * 2014-07-31 2014-11-12 华通机电股份有限公司 Small circuit breaker with wire holder assisting in arc extinguishment
WO2017166797A1 (en) * 2016-03-30 2017-10-05 浙江正泰电器股份有限公司 Miniature circuit breaker
CN107293458A (en) * 2016-03-30 2017-10-24 浙江正泰电器股份有限公司 Miniature circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143492A (en) * 2014-07-31 2014-11-12 华通机电股份有限公司 Small circuit breaker with wire holder assisting in arc extinguishment
CN104143492B (en) * 2014-07-31 2016-03-30 华通机电股份有限公司 A kind of miniature circuit breaker of junction block auxiliary extinction of arc
WO2017166797A1 (en) * 2016-03-30 2017-10-05 浙江正泰电器股份有限公司 Miniature circuit breaker
CN107293458A (en) * 2016-03-30 2017-10-24 浙江正泰电器股份有限公司 Miniature circuit breaker
RU2722093C2 (en) * 2016-03-30 2020-05-26 Чжэцзян Чинт Электрикс Ко., Лтд. Miniature circuit breaker
CN107293458B (en) * 2016-03-30 2020-08-25 浙江正泰电器股份有限公司 Small-sized circuit breaker

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20141210

Effective date of abandoning: 20160330

C25 Abandonment of patent right or utility model to avoid double patenting