CN107633981B - A kind of breaker contact system - Google Patents

A kind of breaker contact system Download PDF

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Publication number
CN107633981B
CN107633981B CN201711084826.0A CN201711084826A CN107633981B CN 107633981 B CN107633981 B CN 107633981B CN 201711084826 A CN201711084826 A CN 201711084826A CN 107633981 B CN107633981 B CN 107633981B
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China
Prior art keywords
contact
boss
breaker
arm
rectangular
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CN201711084826.0A
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CN107633981A (en
Inventor
白春光
冯仰怀
王敏
李炎
王月民
王云飞
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XUZHOU XINDIAN HI-TECH ELECTRIC Co Ltd
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XUZHOU XINDIAN HI-TECH ELECTRIC Co Ltd
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Priority to CN201711084826.0A priority Critical patent/CN107633981B/en
Publication of CN107633981A publication Critical patent/CN107633981A/en
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Abstract

The invention discloses a kind of breaker contact systems.It constitutes current-carrying circuit including the rectangular contact of stationary contact arm (1-1) by being set to stationary contact arm (1) one end and the rectangular contact of annular groove (5-1) set on acting arm (5) one end and contact board mount (7) and contact plate (2) and cut-offs system.Breaker electric conductor contact face can be improved five times or more by the present invention, the probability that contact fever is effectively reduced, breaks down;The current-carrying capacity that contact of breaker can be greatly improved simultaneously keeps the operation of breaker, switch safer and more reliable;Contact plate and contact electric conductor form smooth at face contact, and contact resistance is stablized, and have a self-cleaning, and the spring of contact is very slight when connection, short circuit current by when contact it is also very stable;Structure is relatively easy, and manufacture difficulty is small, reduces production cost to greatest extent, because of greatly improving for contact area, significantly reduces the circuit breaker failure occurred by contact reason and because of the probability of the excessively pyrogenetic fire incident of contact.

Description

A kind of breaker contact system
Technical field
The present invention relates to a kind of breaker contact systems, belong to high and low voltage switchgear technical field.
Background technique
Breaker is that one kind being capable of manually opened or closing alive circuit and automatic disconnection overload circuit or short circuit current Electrical, electric network protection device, and breaker contact system is the most key core component of breaker.
Quincunx contact system is most widely used that on senior middle school's voltage breaker in the prior art, it is led by surrounding Two seamed edges of the inner circle of one group of fingertip of electric body circumference parallel arrangement form line with circular conductive body and contact.This structure exists not Reasonable place, because being point or line contact, contact surface is too small, causes current-carrying capacity to be restricted, and also occur that contact Excessive, fever of arcing etc., or even therefore there is a phenomenon where fire, there are some potential safety problemss, can also reduce operation of power networks matter Amount and operating cost.
To solve the problems, such as that this respect, simplified design structure can be used the board-like contact system of contact and replace original plum Flower-shape structure of contact terminal, and improve mechanism design.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of breaker contact systems, simplify structure design, Replace quincunx structure of contact terminal in the prior art using board-like contact system is contacted, by breaker electric conductor contact face Five times or more are improved, the probability that contact fever is effectively reduced, breaks down;The current-carrying of contact of breaker can be greatly improved simultaneously Amount reduces manufacturing cost, keeps the operation of breaker, folding safer and more reliable.
To achieve the goals above, this breaker contact system includes the rectangular contact of stationary contact arm by being set to stationary contact arm one end The current-carrying circuit constituted with the rectangular contact of annular groove and contact board mount and contact plate for being set to acting arm one end cut-offs system;
The contact plate is equipped with four pieces, is strip structure, and four pieces of contact plates are sequentially arranged in touch panel card slot, and every piece It contacts plate top surface and two sides is plane, top surface is equipped with compression spring hole, and bottom surface, which is equipped with, is in conplane one He of boss contact surface Boss contact surface two;
Rivet clasp is equipped with bracket pin on the contact board mount, and is equipped with connecting hole, rack beam and contact plate card slot;
The contact plate is installed in the contact plate card slot on described contact four end faces of board mount, described acting arm one end The rectangular contact of annular groove on be set with the contact board mount;
The boss contact surface two of the contact plate caters in the annular groove of the rectangular contact of the annular groove in the acting arm, institute It states and is equipped with two groups of pressure springs in the compression spring hole on contact plate, close to the side underrun one of boss contact surface one on the contact plate Group pressure spring is contacted with the rack beam on the contact board mount;Boss contact surface two on the contact plate passes through another group of pressure The plane contact of spring and the rectangular contact of annular groove;
The boss contact surface one on four pieces of contact plates forms the hole in closing, the stationary contact arm one between each other The rectangular contact of stationary contact arm at end is inserted into the cavity that the boss contact surface one is formed between each other.
Further, the bottom surface of the boss contact surface one and boss contact surface two is provided with several strip grooves.
Further, the both ends of boss contact surface one and boss contact surface two are provided with fillet.
Further, the both ends of the surface in the acting arm on the inside of the annular groove in four faces of the rectangular contact of annular groove are provided with circle Angle.
Further, the rectangular contact of stationary contact arm set on stationary contact arm one end is equipped with and facilitates insertion on the contact plate Contraction square toes in the cavity that boss contact surface one is formed between each other.
Further, compression spring cover is set with outside the pressure spring.
Compared with prior art, beneficial effects of the present invention are as follows:
1, breaker electric conductor contact face is improved five times or more by the present invention, and contact fever is effectively reduced, event occurs The probability of barrier;The current-carrying capacity that contact of breaker can be greatly improved simultaneously keeps the operation of breaker, switch safer and more reliable;
2, contact plate and contact electric conductor form smooth at face contact in the present invention, and contact resistance is stablized, and has from clear Effect, the spring of contact is very slight when connection, short circuit current by when contact it is also very stable;
3, contact area in breaker contact system provided by the invention greatly improves, and significantly reduces because of contact The circuit breaker failure that reason occurs and the probability because of the excessively pyrogenetic fire incident of contact, guarantee power grid and equipment for power transmission and distribution Safe operation, while structure is simple, significantly reduces manufacture difficulty, can reduce production cost to greatest extent.
Detailed description of the invention
Fig. 1 is right view stereoscopic schematic diagram of the invention;
Fig. 2 is left view stereoscopic schematic diagram of the invention;
Fig. 3 is right side view of the invention;
Fig. 4 is the stereoscopic schematic diagram that the present invention removes compression spring cover;
Fig. 5 is forward sight diagrammatic cross-section of the invention;
Fig. 6 is the rectangular contact position left-hand diagrammatic cross-section of quiet arm of the invention;
Fig. 7 is acting arm contact plate position left-hand diagrammatic cross-section of the invention;
Fig. 8 is present invention connection bolt position left-hand diagrammatic cross-section;
In figure: 1,1-2, stationary contact arm, 1-1, stationary contact arm rectangular contact shrink square toes, 2, contact plate, 2-1, compression spring hole, 2- 2, strip groove, 2-3, boss contact surface one, 2-4, boss contact surface two, 3, pressure spring, 4, compression spring cover, 5, acting arm, 5-1, annular groove Rectangular contact, 6, connection bolt, 7, contact board mount, 7-1, bracket pin, 7-2, connecting hole, 7-4,7-3, rack beam connect Touch panel card slot.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figures 1 to 8, this breaker contact system includes the rectangular contact of stationary contact arm by being set to 1 one end of stationary contact arm The current-carrying circuit that the 1-1 and rectangular contact 5-1 of annular groove set on 5 one end of acting arm and contact board mount 7 and contact plate 2 are constituted is cut-off System;
The contact plate 2 is equipped with four pieces, is strip structure, four pieces of contact plates 2 are sequentially arranged at contact plate card slot 7-4 In, every piece of 2 top surface of contact plate and two sides are plane, and top surface is equipped with compression spring hole 2-1, and bottom surface, which is equipped with, is in conplane boss Two 2-4 of one 2-3 of contact surface and boss contact surface;
Rivet clasp is equipped with bracket pin 7-1 on the contact board mount 7, and be equipped with connecting hole 7-2, rack beam 7-3 and Contact plate card slot 7-4;
The contact plate 2 is installed in the contact plate card slot 7-4 on described contact 7 four end faces of board mount, the dynamic touching The contact board mount 7 is set on the rectangular contact 5-1 of the annular groove of 5 one end of arm;
When breaking: two 2-4 of boss contact surface of the contact plate 2 caters to the rectangular contact of annular groove in the acting arm 5 In the annular groove of 5-1, it is equipped with two groups of pressure springs 3 in the compression spring hole 2-1 on the contact plate 2, is connect on the contact plate 2 close to boss One group of pressure spring 3 of side underrun of one 2-3 of contacting surface is contacted with the rack beam 7-3 on the contact board mount 7;The contact The plane contact that two 2-4 of boss contact surface on plate 2 passes through another group of pressure spring 3 and the rectangular contact 5-1 of annular groove;Pass through pressure spring 3 Two 2-4 of boss contact surface being arranged on contact plate 2 is pressed together on the contact plane of the rectangular contact 5-1 of annular groove by active force.
When access: one 2-3 of boss contact surface on four pieces of contact plates 2 forms the hole in closing between each other, The rectangular contact 1-1 of stationary contact arm of described 1 one end of stationary contact arm is inserted into the cavity that one 2-3 of boss contact surface is formed between each other In.
Further, the bottom surface of one 2-3 of boss contact surface and two 2-4 of boss contact surface is provided with several strip grooves 2-2.Strip groove 2-2 be used for play the role of contact from it is clear, it is anti-sintering, ventilation and heat.
Specifically, 1, from clear: due to the extruding of pressure spring 3 and the moderate exercise of contact plate 2, contact plate 2 and contact are generated Powder, can be expressed in time in strip groove 2-2 and is haved the function that from clear;2, anti-sintering: due to being uniformly arranged strip groove 2- 2, timely ventilation and heat reduces the risk of contact overheat;3, it is uniformly arranged strip groove 2-2, scattered current access avoids part from connecing The excessive adhesive effect of contacting surface, can reduce the probability of thermal sintering.
Further, the both ends of two 2-4 of one 2-3 of boss contact surface and boss contact surface are provided with fillet.It is connect convenient for boss One 2-3 of contacting surface and the rectangular contact 1-1 of stationary contact arm are inserted into, and are fitted in the rectangular contact 5-1 of annular groove convenient for two 2-4 of boss contact surface Degree activity.
Further, the both ends of the surface in the acting arm 5 on the inside of the annular groove in four faces of the rectangular contact 5-1 of annular groove are respectively provided with There is fillet.It is contacted convenient for the rectangular contact 5-1 of annular groove with two 2-4 of boss contact surface cooperation.
Further, the rectangular contact 1-1 of stationary contact arm set on 1 one end of stationary contact arm is equipped with and facilitates insertion into the contact plate The contraction square toes 1-2 in cavity that one 2-3 of boss contact surface on 2 is formed between each other.
Further, compression spring cover 4 is set with outside the pressure spring 3.For playing the role of the fixed pressure spring 3.
The working principle of this breaker contact system is as follows:
Breaker access process: breaker operating mechanism drives the rectangular contact 5-1 of annular groove that connect with acting arm 5 to stationary contact The rectangular contact 1-1 of arm is mobile, make the rectangular contact 1-1 of stationary contact arm be inserted into one 2-3 of boss contact surface on four contact plates 2 mutually it Between the hole that is formed, the bracket on contact plate 2 on the side bottom surface of one 2-3 of boss contact surface and contact board mount 7 at this time Crossbeam 7-3 leaves, and due to the active force of pressure spring 3, one 2-3 of boss contact surface is made tightly to be pressed together on the rectangular contact 1-1's of stationary contact arm On four flat contact surfaces, while two 2-4 of boss contact surface is pressed together on the flat contact surface of the rectangular contact 5-1 of annular groove, thus Current path is formed, breaker is in an ON state.
Breaker open circuit process: with breaker access process on the contrary, because operation needs or circuit or electrical equipment are different Often, breaker obtains cut-offfing signal, drives the rectangular contact 5-1 band of annular groove connecting with acting arm 5 by breaker operating mechanism Dynamic contact plate 2 is detached from the rectangular contact 1-1 of stationary contact arm, realizes that breaker disconnects.
In conclusion the present invention provides a kind of breaker contact system, breaker electric conductor contact face can be mentioned High five times or more, the probability that contact fever is effectively reduced, breaks down;The current-carrying of contact of breaker can be greatly improved simultaneously Amount keeps the operation of breaker, switch safer and more reliable;Contact plate and contact electric conductor form smooth at face contact, contact Resistance stabilization has self-cleaning, and the spring of contact is very slight when connection, short circuit current by when contact it is also very stable;This is disconnected Road device contact system, structure is simple, and manufacture difficulty is small, can reduce production cost to greatest extent, substantially because of contact area It improves, significantly reduces the circuit breaker failure occurred by contact reason and because of the probability of the excessively pyrogenetic fire incident of contact, guarantor Hinder the safe operation of power grid and equipment for power transmission and distribution.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (6)

1. a kind of breaker contact system, which is characterized in that
It is rectangular including the rectangular contact of stationary contact arm (1-1) by being set to stationary contact arm (1) one end and the annular groove for being set to acting arm (5) one end The current-carrying circuit that contact (5-1) and contact board mount (7) and contact plate (2) are constituted cut-offs system;
The contact plate (2) is equipped with four pieces, is strip structure, and every piece of contact plate (2) top surface and two sides are plane, top surface Equipped with compression spring hole (2-1), bottom surface, which is equipped with, is in conplane boss contact surface one (2-3) and boss contact surface two (2-4);
Rivet clasp is equipped with bracket pin (7-1) on the contact board mount (7), and is equipped with connecting hole (7-2), rack beam (7- And contact plate card slot (7-4) 3);
Four pieces of contact plates (2) are successively installed on the contact plate card slot (7-4) on described contact (7) four end faces of board mount In, the contact board mount (7) is set on the rectangular contact of annular groove (5-1) of described acting arm (5) one end;
The boss contact surface two (2-4) of the contact plate (2) caters to the rectangular contact of annular groove (5-1) on the acting arm (5) Annular groove in, be equipped with two groups of pressure springs (3) in compression spring hole (2-1) on the contact plate (2), it is close on the contact plate (2) Rack beam (7- on one group of pressure spring (3) of side underrun of boss contact surface one (2-3) and contact board mount (7) 3) it contacts;Boss contact surface two (2-4) on the contact plate (2) passes through another group of pressure spring (3) and the rectangular contact of annular groove (5-1) Plane contact;
The boss contact surface one (2-3) on four pieces of contact plates (2) forms the hole in closing, the stationary contact between each other The rectangular contact of stationary contact arm (1-1) of arm (1) one end is inserted into the cavity that the boss contact surface one (2-3) is formed between each other.
2. a kind of breaker contact system according to claim 1, which is characterized in that
The bottom surface of the boss contact surface one (2-3) and boss contact surface two (2-4) is provided with several strip grooves (2-2).
3. a kind of breaker contact system according to claim 1 or 2, which is characterized in that
The both ends of boss contact surface one (2-3) and boss contact surface two (2-4) are provided with fillet.
4. a kind of breaker contact system according to claim 1, which is characterized in that
Both ends of the surface on the acting arm (5) on the inside of the annular groove in four faces of the rectangular contact of annular groove (5-1) are provided with fillet.
5. a kind of breaker contact system according to claim 1, which is characterized in that
The rectangular contact of stationary contact arm (1-1) set on stationary contact arm (1) one end is equipped with and facilitates insertion on the contact plate (2) Contraction square toes (1-2) in the cavity that boss contact surface one (2-3) is formed between each other.
6. a kind of breaker contact system according to claim 1, which is characterized in that
Compression spring cover (4) are set with outside the pressure spring (3).
CN201711084826.0A 2017-11-07 2017-11-07 A kind of breaker contact system Active CN107633981B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711084826.0A CN107633981B (en) 2017-11-07 2017-11-07 A kind of breaker contact system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711084826.0A CN107633981B (en) 2017-11-07 2017-11-07 A kind of breaker contact system

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CN107633981A CN107633981A (en) 2018-01-26
CN107633981B true CN107633981B (en) 2019-09-13

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108281328A (en) * 2018-03-28 2018-07-13 苏州希美微纳系统有限公司 A kind of RF MEMS Switches of high-performance high power capacity

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62291817A (en) * 1986-06-10 1987-12-18 Mitsubishi Electric Corp Contact
JPH07298462A (en) * 1994-04-26 1995-11-10 Mitsubishi Electric Corp Conductive connector
EP0820079A2 (en) * 1996-07-19 1998-01-21 ABB SACE S.p.A. Circuit breaker with detachable contacts
CN101661848A (en) * 2009-10-09 2010-03-03 闫淼江 Contact assembly of isolating switch
CN204178937U (en) * 2014-12-01 2015-02-25 哈尔滨理工大学 A kind ofly prevent overheated electro-pneumatic contact
CN204464151U (en) * 2015-04-21 2015-07-08 三峡大学 A kind of isolation switch contact
CN105225879A (en) * 2015-04-29 2016-01-06 苏州西脉记忆合金有限公司 A kind of isolating switch intelligence contact
CN207542176U (en) * 2017-11-07 2018-06-26 徐州新电高科电气有限公司 Breaker contact system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62291817A (en) * 1986-06-10 1987-12-18 Mitsubishi Electric Corp Contact
JPH07298462A (en) * 1994-04-26 1995-11-10 Mitsubishi Electric Corp Conductive connector
EP0820079A2 (en) * 1996-07-19 1998-01-21 ABB SACE S.p.A. Circuit breaker with detachable contacts
CN101661848A (en) * 2009-10-09 2010-03-03 闫淼江 Contact assembly of isolating switch
CN204178937U (en) * 2014-12-01 2015-02-25 哈尔滨理工大学 A kind ofly prevent overheated electro-pneumatic contact
CN204464151U (en) * 2015-04-21 2015-07-08 三峡大学 A kind of isolation switch contact
CN105225879A (en) * 2015-04-29 2016-01-06 苏州西脉记忆合金有限公司 A kind of isolating switch intelligence contact
CN207542176U (en) * 2017-11-07 2018-06-26 徐州新电高科电气有限公司 Breaker contact system

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