CN104008929A - Surface contact plug-in type circuit breaker - Google Patents
Surface contact plug-in type circuit breaker Download PDFInfo
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- CN104008929A CN104008929A CN201410178074.4A CN201410178074A CN104008929A CN 104008929 A CN104008929 A CN 104008929A CN 201410178074 A CN201410178074 A CN 201410178074A CN 104008929 A CN104008929 A CN 104008929A
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- plug
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- circuit breaker
- insulating base
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Abstract
The invention discloses a surface contact plug-in type circuit breaker, and belongs to the technical field of circuit safety protection. The circuit breaker comprises a circuit breaker body and a plug-in type mounting table. The circuit breaker body comprises a plug, wherein the plug is of a plane structure and fixedly arranged on a wiring terminal of the circuit breaker body and keeps making reliable contact with the wiring terminal. The plug-in type mounting table comprises an insulating base, a socket, a pressing bolt and a locking bolt. A plug-in type plate rear wiring socket is of an L-shaped bent structure, through holes are machined in the horizontal portion of the socket and the perpendicular portion of the socket respectively, and the outer surface of the perpendicular part of the socket makes contact with the plug. The head portion of the pressing bolt is fixed into the insulating base, and the threaded rod portion of the pressing bolt penetrates the insulating base and the through hole in the perpendicular portion of the socket and is then exposed out of the circuit breaker body and electrically connected with the plug-in type mounting table. The head portion of the locking bolt is fixed into the insulating base, and the threaded rod portion of the locking bolt penetrates through the insulating base and is then exposed and used for fixing the circuit breaker body and the plug-in type mounting table. The surface contact plug-in type circuit breaker can solve the safety problem, caused by circuit breaker contact heating under a large current situation, of a traditional plug-in type wiring structure.
Description
Technical field
Invention relates to a kind of circuit breaker, is specifically related to the plug in circuit breaker of a kind of contact, belongs to circuit safety resist technology field.
Background technology
Plug in circuit breaker is made up of breaker body and two parts of plug-in type erecting bed, and breaker body is on the binding post of traditional breaker of plastic casing, to fill a plug; On plug-in type erecting bed, fill a socket, socket is connected with the terminals of erecting bed.In the time of wiring, only the terminals of plug-in type erecting bed need be connected with wiring bus-row in circuit, and by the socket of the plug insertion erecting bed of breaker body, and fixing circuit breaker has just completed the wiring of circuit breaker.In the time of circuit breaker maintenance and replacing, do not need to have a power failure and wiring, very easy to use.
Although adopt plug in type connection mode to bring great convenience to the maintain and replace of circuit breaker, but this is equivalent to a secondary separable contact to plugs and sockets, there is certain contact resistance, cause larger heating once contact resistance between plug and socket is excessive, cause the spring deformation annealing that keeps in touch pressure, caloric value is further increased, so vicious circle, cause the connection between plugs and sockets unreliable, finally occur that circuit breaker damage even causes fire.The rated current of circuit breaker is larger, and the possibility going wrong is larger.Therefore plug in construction is in the breaker of plastic casing below 200A in rated current, is widely adopted.And in the breaker of plastic casing of 400A, 630A and 800A, use less, user often relatively worry.But plug-type mounting means brings great convenience really to maintenance and the replacing of circuit breaker.
In addition,, along with the continuous expansion of electric power system capacity, the capacity of short circuit of system is in continuous increase, for the short circuit breaking capacity of its supporting breaker of plastic casing is also improving.In the time that short circuit breaking capacity and short time withstand current are increased to certain limit, also require plug-in moulded case circuit breaker between plug and socket, can bear its large electric current in the time of the short circuit breaking capacity compared with high and short time withstand current and unlikelyly burn out or scold out arcing.This is also that the contact reliability of plug in circuit breaker is had higher requirement.Visible, when the plug-in moulded case circuit breaker of traditional structure is used for larger electric current, there is some problems in its structure, in the circuit breaker of larger rated current, cannot adopt plug in circuit breaker structure.
Summary of the invention
In view of this, the invention provides a kind of face contact plug in circuit breaker, can solve that traditional plug in type connection structure exists because of safety issue that under large current conditions, circuit breaker contact heating causes.
A kind of face contact plug in circuit breaker, comprise breaker body and plug-in type erecting bed, wherein, breaker body also comprises plug, clamp nut and locking nut, plug is planar structure, on plug, be processed with through hole, this through hole is used for through hold-down bolt, plug is fixedly mounted on the binding post of breaker body and reliably contacts with its maintenance, on breaker body, be processed with the through hole that runs through its thickness direction, the diameter of through hole is corresponding with clamp nut and locking nut with number, through hole is used for through hold-down bolt and clamping screw and clamp nut is set and locking nut, the lead to the hole site of clamp nut is set corresponding and coaxial with the through hole on plug,
Plug-in type erecting bed comprises insulating base, socket, screw, hold-down bolt and clamping screw, socket is the bending structure of L-type, in the horizontal and vertical part of socket, be all processed with through hole, on socket, the through hole of horizontal component is used for and external cabling, and the through hole of vertical component is used for through hold-down bolt; The outer surface of socket vertical component is and the contact-making surface of plug, the horizontal component of socket passes insulating base and is fixed by screw along the thickness direction of insulating base, after the through hole of the screw portion of hold-down bolt through vertical component on insulating base and socket, expose, the head of hold-down bolt is fixed on insulating base inside; The screw portion of clamping screw exposes through after circuit breaker insulating base, and the head of clamping screw is fixed on insulating base inside;
The L-type bending structure of socket is for wiring after plate, and when other connection types, socket adopts slab construction;
Further, plug and socket all adopt fine copper row and contact surface silver-plated;
Further, leave 0.5 to 3mm free gap in the horizontal direction of socket, prevent that the plug of the each utmost point of circuit breaker or socket from can not normally compress because thickness mismachining tolerance makes copper bar, thereby cause contact-making surface can not realize the conduction property of face Contact Effect circuit breaker;
Further, one end of locking nut and clamp nut is metal material, and the other end is the insulating material with flat recess;
Operation principle: locking nut and clamping screw are for the locking of breaker body and plug-in type erecting bed, and clamp nut and hold-down bolt are for the compression of the plug on breaker body and the socket on plug-in type erecting bed; When use, clamping screw on plug-in type erecting bed and hold-down bolt insert respectively the through hole on breaker body and on plug, now fit mutually in the surface of plug and socket, in the through hole of breaker body rear end face, screw in respectively locking nut and clamp nut, complete circuit breaker and be reliably connected with plug-in type erecting bed.
Beneficial effect:
1, the socket part on plug and the plug-in type erecting bed on breaker body of the present invention is all designed to planar structure, when breaker body and plug-in type erecting bed are installed, rely on the plane of plug and socket to contact conducting, therefore can bear compared with large electric current and unlikelyly burn out or scold out arcing, having improved the contact reliability of plug in circuit breaker.
2, plug and socket of the present invention all adopt fine copper row and contact plane silver-plated, can reduce contact resistance, improve the dependability of circuit breaker.
3, the form that the present invention adopts clamp nut and locking nut is installed fixing to breaker body and plug-in type erecting bed, can ensure that plug and socket realizes reliable contact; One end of nut is metal material, and the other end is the insulating material with flat recess, adopts insulating material to guarantee and the insulation of main circuit, to prevent that maintenance personal is electrically shocked in the time keeping in repair or change circuit breaker, has guaranteed the safety using.
Brief description of the drawings
Fig. 1 is the integral installation structural representation of plug-in type erecting bed of the present invention and breaker body;
Fig. 2 is the wiring construction schematic diagram on plug-in type erecting bed of the present invention.
Wherein, 1-clamp nut, 2-locking nut, 3-plug, 4-insulating base, 5-clamping screw, 6-socket, 7-hold-down bolt, 8-screw, 9-breaker body.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
As shown in Figure 1, a rated current is three utmost point breaker of plastic casing of 1250A or 1600A, is made up of breaker body 9 and plug-in type erecting bed;
6 plugs 3 of breaker body 9 three utmost points are all with fine copper row processing, contact-making surface is smooth and silver-plated, is processed with the through hole of 2 φ 11 on copper bar, and through hole is used for through hold-down bolt, 6 plug 3 plugs are fixedly mounted on the front end face of breaker body, and plug 3 keeps reliably contacting with binding post; On breaker body 9, be processed with the through hole that runs through its thickness direction, the diameter of through hole and number are corresponding with clamp nut 1 and locking nut 2, through hole is used for through hold-down bolt 7 and clamping screw 5 and clamp nut 1 is set and locking nut 2, the lead to the hole site of clamp nut 1 is set corresponding and coaxial with the through hole on copper bar, on breaker body 9, have 12 through holes and pass for hold-down bolt 7,4 through holes pass for clamping screw;
As shown in Figure 2, plug-in type erecting bed is made up of plate shaped insulating base 4, socket 6, screw 8, hold-down bolt 7 and clamping screw 5, six sockets 6 all adopt fine copper row to be processed into the bending structure of L-type, in the horizontal and vertical part of socket 6, be all processed with the through hole of 2 φ 10.5, each socket 6 is fixed on insulating base 4 by the screw 8 of two M5, socket 6 can not rotate, but can move about 3mm by along continuous straight runs.
Two of horizontal component φ 10.5 through holes wiring position in erecting bed on socket 6, for the wiring of main circuit; The hold-down bolt 7 of two M8 is housed in two φ 10.5 through holes of vertical component, and the turret head of hold-down bolt 7 is embedded in the hexagonal hole of relevant position on insulating base 4, makes hold-down bolt 7 tighten Shi Buhui rotation.The screw portion of clamping screw 5 exposes through after insulating base 4, and the head of clamping screw 5 is fixed on insulating base 4 inside;
When use, in φ 11 through holes on the plug 3 of breaker body 9, be inserted in M8 hold-down bolt 7, while shifting breaker body 9 plane contact of plug 3 and socket 6 onto, clamp nut 1 is screwed into hold-down bolt 7, clamp nut 1 is tightened with straight screwdriver, in the time that 12 clamp nuts 1 are all tightened, can guarantee that the plug on breaker body is connected with the reliable of socket on plug-in type erecting bed, and then locking nut 2 is screwed into clamping screw 5, breaker body 9 and plug-in type erecting bed are fixed together reliably.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a face contact plug in circuit breaker, it is characterized in that, comprise: breaker body (9) and plug-in type erecting bed, wherein, breaker body (9) also comprises plug (3), clamp nut (1) and locking nut (2), plug (3) is planar structure, plug (3) is fixedly mounted on the front end face of breaker body (9) and is reliably connected with breaker connecting terminal, plug is processed with the through hole that runs through its thickness direction on (3), the diameter of through hole and number are corresponding with clamp nut (1), the lead to the hole site that clamp nut (1) is set is corresponding and coaxial with the through hole on plug (3),
Plug-in type erecting bed comprises insulating base (4), socket (6), screw, hold-down bolt (7) and clamping screw (5), socket (6), for being the bending structure of L-type when wiring after plate, is all processed with through hole in the horizontal and vertical part of socket (6); The outer surface of socket (6) vertical component is and the contact-making surface of plug (3) that the horizontal component of socket (6) passes insulating base (4) and fixed by screw along the thickness direction of insulating base (4); The head of hold-down bolt (7) is fixed on insulating base (4) inside, after the through hole of the screw portion of hold-down bolt (7) through insulating base (4) and the upper vertical component of socket (6), expose, the head of clamping screw (5) is fixed on insulating base (4) inside, and the screw portion of clamping screw (5) exposes through after insulating base (4).
As claimed in claim 1 contact plug in circuit breaker, it is characterized in that, described plug (3) and socket (6) all adopt fine copper arrange make and contact surface silver-plated.
3. as claimed in claim 1 or 2 contact plug in circuit breaker, is characterized in that, leaves 0.5 to 3mm free gap in the horizontal direction of described socket (6).
4. as claimed in claim 1 or 2 contact plug in circuit breaker, is characterized in that, one end of described locking nut (2) and clamp nut (1) is metal material, and the other end is the insulating material with flat recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178074.4A CN104008929B (en) | 2014-04-29 | 2014-04-29 | A kind of face contact plug in circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178074.4A CN104008929B (en) | 2014-04-29 | 2014-04-29 | A kind of face contact plug in circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104008929A true CN104008929A (en) | 2014-08-27 |
| CN104008929B CN104008929B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410178074.4A Active CN104008929B (en) | 2014-04-29 | 2014-04-29 | A kind of face contact plug in circuit breaker |
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| Country | Link |
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| CN (1) | CN104008929B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931927A (en) * | 2016-05-25 | 2016-09-07 | 林益晶 | Frame circuit breaker |
| CN108258553A (en) * | 2018-03-22 | 2018-07-06 | 维纳尔（北京）电气系统有限公司 | A kind of adapter and adapter assembly |
| CN110010418A (en) * | 2019-04-01 | 2019-07-12 | 常熟瑞特电气股份有限公司 | It is a kind of to have the characteristics that the breaker of plastic casing of frame circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11185852A (en) * | 1997-12-24 | 1999-07-09 | Mitsubishi Electric Corp | Electric current detecting apparatus |
| CN2653722Y (en) * | 2003-09-01 | 2004-11-03 | 上海电器股份有限公司人民电器厂 | Multiple pole integrated plug-in type terminal base |
| CN201853659U (en) * | 2010-11-25 | 2011-06-01 | 河南省电力公司郑州供电公司 | Clamp device of breaker flange and wiring board |
| CN202651007U (en) * | 2012-05-18 | 2013-01-02 | 苏州未来电器有限公司 | Housing of plug-in device with rapid bus-bar insertion device |
| CN203895384U (en) * | 2014-04-29 | 2014-10-22 | 常熟瑞特电气股份有限公司 | Surface contact plug-in type breaker |
-
2014
- 2014-04-29 CN CN201410178074.4A patent/CN104008929B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11185852A (en) * | 1997-12-24 | 1999-07-09 | Mitsubishi Electric Corp | Electric current detecting apparatus |
| CN2653722Y (en) * | 2003-09-01 | 2004-11-03 | 上海电器股份有限公司人民电器厂 | Multiple pole integrated plug-in type terminal base |
| CN201853659U (en) * | 2010-11-25 | 2011-06-01 | 河南省电力公司郑州供电公司 | Clamp device of breaker flange and wiring board |
| CN202651007U (en) * | 2012-05-18 | 2013-01-02 | 苏州未来电器有限公司 | Housing of plug-in device with rapid bus-bar insertion device |
| CN203895384U (en) * | 2014-04-29 | 2014-10-22 | 常熟瑞特电气股份有限公司 | Surface contact plug-in type breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931927A (en) * | 2016-05-25 | 2016-09-07 | 林益晶 | Frame circuit breaker |
| CN108258553A (en) * | 2018-03-22 | 2018-07-06 | 维纳尔（北京）电气系统有限公司 | A kind of adapter and adapter assembly |
| CN110010418A (en) * | 2019-04-01 | 2019-07-12 | 常熟瑞特电气股份有限公司 | It is a kind of to have the characteristics that the breaker of plastic casing of frame circuit breaker |
| CN110010418B (en) * | 2019-04-01 | 2024-04-26 | 常熟市国瑞科技股份有限公司 | Plastic case circuit breaker with frame circuit breaker characteristics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104008929B (en) | 2016-08-31 |
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