CN205452216U - Contact support structure of universal breaker contact system - Google Patents
Contact support structure of universal breaker contact system Download PDFInfo
- Publication number
- CN205452216U CN205452216U CN201521133173.7U CN201521133173U CN205452216U CN 205452216 U CN205452216 U CN 205452216U CN 201521133173 U CN201521133173 U CN 201521133173U CN 205452216 U CN205452216 U CN 205452216U
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- contact
- insulating barrier
- hole
- barrier assembly
- support body
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Abstract
Contact support structure of universal breaker contact system, support body and activity insulating barrier subassembly including the contact, activity insulating barrier subassembly sets up with moving contact piece interval, adjacent contact blade is formed to two moving contact pieces of looks spaced, the hookup of adjacent contact blade has soft connection, activity insulating barrier subassembly turns around the back shaft with adjacent contact blade through the centre, go up the gyration and support the series connection, middle gyration back shaft and two fixed diaphragm orifice fixed connection, the fixed plate is fixed on the body is supported to the contact, the screens of fixed plate and U type contact cover is fixed, U type contact cover no. 2 is fixed at the both ends of middle gyration back shaft, middle gyration back shaft is inlayed in the U type groove of the both sides wall of body is supported to the contact, effectively improve circuit breaker current -carrying make -break capacity and reduce the temperature rise, increase contact system's return circuit number, and is simple in structure, high convenience in manufacturing, no environmental pollution and low cost.
Description
Technical field
This utility model relates to the contact group system that a kind of chip assembles, and belongs to low-voltage distribution technical field of electric appliances, particularly to the contact supporting structure of a kind of universal type breaker contact system.
Background technology
Universal low-voltage circuit breaker is mainly used in low-voltage distribution system, use as master switch in being mostly installed at below the disconnecting switch of dry-type transformer connection, it can be connected at rated loads and cut-off distribution line, (such as overload and short circuit) automatic shutoff circuit in case of a fault, and rely on the separation of dynamic and static contact to realize load and isolated from power.Its protection feature has short delay function, and i.e. when circuit is short-circuited, in subordinate's chopper has the time interval of disjunction short circuit current, this chopper will not be scolded open by electrodynamic repulsion force.Simultaneously because transformator is the most close from loaded line, motor controller center, therefore the impedance of circuit is little, and short circuit current during short trouble is the biggest, it is desirable to have the short circuit breaking capacity of superelevation.Universal frame circuit breaker is to measure big, wide product in current low-voltage electrical apparatus, and contact system directly influences the performance of product as core component therein, the quality of its design and processing.
Contact system is current-carrying part important in frame circuit breaker, and its performance directly affects connection and the breaking capacity of whole chopper.In order to be effectively improved chopper make-break capacity and reduce temperature rise, the feeder number of contact system, the newly-increased space needed for therefore the mounting groove of contact support and contact flexible connection also to increase the thickness of space-number or increase contact blade accordingly need to be increased.Prior art is by two big limitation of the technology:
1, contact support usually body is provided with polylith dividing plate (isolation grid), can only arrange 10 loops, and this contact supporting structure space availability ratio is low so that contact system feeder number is few, is unfavorable for reducing temperature rise.
If 2 use thermosetting plastics that electric arc high temperature resistant, resistance to, structural strength are higher to manufacture isolation grid, it is limited by the restriction of thermoset plastic forming process conditions, its thickness can not be made the thinnest (general requirement >=1.2mm), it is impossible to realizes said structure contact support and is limited by DMC compression molding material processing technique.Further, so that after contact supports that difficulty of processing increases, the scrappage of product will be greatly improved.
Chinese patent 200710025637.6 discloses a kind of moving contact of breaker structure.In the program, in order to improve KA Rms, contact uses, in supporting, the scheme increasing fingertip quantity, is embodied as removing between fingertip and supports all-in-one-piece isolation grid with contact, uses fixed support and grid to separate fingertip.Use thinning isolation grid to increase the receiving space of fingertip, and then increase fingertip quantity way.The thickness isolating grid in this structure is the most all compressed to 0.8～1mm.And using thermoplastic to manufacture isolation grid, thermoplastic its structural strength when temperature is higher can reduce, isolated gate sector-meeting deliquescing so that larger displacement even occurs in fingertip double swerve.The movement of fingertip causes the touch spring being pressed in fingertip abdominal part groove to occur crooked, the touch spring amount of being effectively compressed when closing a floodgate is caused to reduce, the reduction of contact end pressure, contact resistance increase, contact and whole chopper temperature rise increase, and on the one hand reduce the resistance fusion welding of contact；On the other hand lead chopper temperature rise too high, make design effect have a greatly reduced quality.And because the increase of part, structure is the compactest, causes installation difficulty, is difficult to realize automatization.Additionally, increase fingertip number in limited space, too much fingertip quantity and the thinnest fingertip thickness cause the touch spring central diameter size being pressed in fingertip abdominal part to be restricted, and result is that touch spring ratio of height to diameter is excessive.And spring is always at its limit pressured state during touch spring long time continuous working; therefore spring easily lost efficacy because of tired too early; cause touch spring during closing position that sensing finger pressure is reduced; i.e. contact end pressure reduces; and then KA Rms reduces, the degree of accuracy that the scope of selective protection just diminishes, extreme difference coordinates reduces or lost efficacy.
Chinese patent 201010223553.5 discloses a kind of breaker contact system, including fingertip, touch spring, contact support, contact supports both sides Boards wall, contact support is provided with isolation grid, some fingertip axles are worn and are connected together, and the two ends of this axle are supported by the hole on two clamping plate, and touch spring is placed between the abdominal part of fingertip and the interval of isolation grid, it is characterized in that: to be one group no less than a piece of fingertip, often group fingertip shares one group of touch spring.The program does not solve the difference of the electrical wear of different contact blades, weakening of the spring pressure of the contact blade first worn and torn caused, the double swerve of the contact blade caused, and the spring of the contact blade of rear abrasion is stuck, accelerates the contact blade abrasion first worn and torn.Each touch spring stress inconsistent, it is stuck that operation easily causes spring.
Chinese patent 201010245755.X discloses the contact system of a kind of chopper, the moving contact sheet of movable contact system and insulation intermediate plate are sequentially arranged on revolving support axle and are then fixed in separated 3 individual cavity of moving contact insulating carriage by a pair fixed plate, the lower end of moving contact sheet is connected by the flexible soft strength welded with it, and the other end of fexible conductor couples with cylindric conducting block all-in-one-piece electric-conductor again.This technology does not still solve the problem that Chinese patent 201010223553.5 exists, and soft strength bending interweaves and is linked together, easily causes 1 road contact blade and be once burned out the problem that these multiple contact blades will be burned out simultaneously.Insulation intermediate plate is equal to contact blade size shape simultaneously, during contact system operation, asynchronous, the insulation intermediate plate of multi-beam contact easily cause dislocation when operation rotates with contact blade, heat is passed to insulation intermediate plate by lasting contact blade, the insulation intermediate plate softened is when dislocation, stick on spring, cause contact system stuck, breaking operation can not be done.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to propose the contact supporting structure of a kind of universal type breaker contact system, on the premise of volume can being supported not increasing contact, it is effectively improved chopper current-carrying make-break capacity and reduces temperature rise, increase contact support spacer number, the corresponding feeder number increasing contact system, has simple in construction, easily manufactured, the feature of low cost.
To achieve these goals, the technical solution adopted in the utility model is:
nullThe contact supporting structure of universal type breaker contact system，Including contact support body 3B and movable insulating barrier assembly 6B，Movable insulating barrier assembly 6B and moving contact sheet 101B interval is arranged，Two moving contact sheet 101B separately form adjacent contact sheet 1B，Adjacent contact sheet 1B couples flexible connection 8B，Interstitial hole is offered on movable insulating barrier assembly 6B and adjacent contact sheet 1B，It is cascaded by middle revolving support axle 7B，Movable insulating barrier assembly 6B and adjacent contact sheet 1B top offers concentric hole，Support 13BB by upper rotary to be cascaded，Described upper rotary support shaft 13BB be arranged in parallel with middle revolving support axle 7B，Middle revolving support axle 7B is by the insulating press boards 11GA in the step at its two ends and female thread and two fixed plate 4B holes、Spring 12GA、Fixing screw 13GA is fixing to be connected，Fixed plate 4B is fixed on contact support body 3B，Cylinder 12B in fixed plate 4B fixes with the hole screens in the U-type groove of U-shaped Contact Cover one 10B，U-shaped Contact Cover two 5B is fixed by the two ends of middle revolving support axle 7B by screw，In the U-type groove 301 of the two side that middle revolving support axle 7B is set in contact support body 3B；
The vertical direction that the upper end edge contact of described contact support body 3B is compressed is provided with two coaxial grooves 13B, upper rotary support shaft 13BB is installed in two coaxial grooves 13B, upper rotary support shaft 13BB is connected by the step at its two ends is spacing with contact support body 3B with female thread, makes movable insulating barrier assembly 6B and moving contact sheet 101B be fixed on contact support body 3B.
Described moving contact sheet 101B quantity is more than 15, and not more than 30.
Described insulating barrier assembly 6B is the board of symmetrical one group of independence, the described overall dimensions of insulating barrier assembly 6B matches with the overall dimensions of flexible connection 8B, and the overall dimensions of described insulating barrier assembly 6B is not more than the overall dimensions of moving contact sheet 101B.
Described movable insulating barrier assembly 6B material uses BMC (DMC) or BMC (BMC) or sheet molding compound (SMC).
The thickness range of described movable insulating barrier assembly 6B is [0.2,2.0], and unit is mm.
Described contact support body 3B is provided with hole, the location 303B that multiple side by side parallel is arranged, row multiple location hole 303B separately is provided with spring 11B, the degree of depth of location hole 303B is 0.7 times-0.9 times under spring 11B naturalness, the two ends of location hole 303B are symmetrically arranged with two stopper slots, described stopper slot is the groove of up/down perforation, and the spring pressurized stopper slot on adjacent contact sheet 1B after location hole 303B and installation is just to setting.
Described contact support body 3B is provided with hole, the location 303B that multiple side by side parallel is arranged, it is preferable that be provided with spring 11B in two row multiple location hole 303B separately.
Described contact support body is provided with hole, the location 303B that multiple side by side parallel is arranged, it is preferable that be provided with in big spring set little spring 4G in row multiple location hole 303B separately.
This utility model beneficial effect compared with prior art:
1, space availability ratio is high, makes contact system feeder number increase by 2 roads to 5 tunnels；The increase simultaneously making big contact vast capacity contact system feeder number is unrestricted, substantially increases current capacity.
2, design simple in construction, assembling location is convenient, it is easy to accomplish automatization installs；Owing to movable insulating barrier assembly has the symmetrical parallel axis hole (hole slot) for assembling two groups of parallel revolving support axles with the trim designs of contact support body, on especially movable insulating barrier assembly, design has concentric axis hole, movable insulating barrier assembly can be made closely to split the galvanic circle that contact blade (flexible connection) becomes independent, averagely decrease the electric current of branch, reduce electric power, contact support body can make movable insulating barrier assembly closely be pressed in one simultaneously, play position-limiting action, contact system is made not fall out, avoid and metal contact chip grazing simultaneously, safe and reliable.
3, each contact system loop is dielectrically separated from, with adjacent contact system circuit, the multiplex circuit becoming in parallel, carrying rated current and short circuit current are by contact system loop sum equalization, greatly reduce the electric current that single channel contact system is carried, solve short circuit current during opening and closing contact, the scaling loss of arbitrary contact, electrical wear are caused the impact of the electrodynamical stability of whole system and the problem that lifetime of system is short by electric arc, and the scaling loss having stopped a contact causes other roads, the scaling loss of the most whole chopper.
4, improve contact system Reliability of Microprocessor.Owing to insulating barrier assembly overall dimensions is less than or equal to the overall dimensions of contact blade (flexible connection), making each spring effectively be pressed on contact blade, the spring in contact is supported when can be prevented effectively from contact system action is stuck.
5, add the installing hole degree of depth of touch spring, reduce the ratio of height to diameter of touch spring, improve the job stability of touch spring, add projected life.
The KA Rms value that this utility model can pass through, the net synchronization capability making each contact blade in contact system obtains consistent raising, improve the make-break capacity of omnipotent breaker and reduce temperature rise, solving the capacity expansion and upgrading of existing omnipotent breaker and a difficult problem that the contact support more than 6300A of super large, high-capacity rated current can not manufacture simultaneously.
Accompanying drawing explanation
Fig. 1 is the explosive view of this utility model contact conducting system.
Fig. 2 is the schematic diagram of contact support body structure 3B containing double spring.
Fig. 3 is the schematic diagram containing contact support body structure 3B being cased with little spring in big spring.
Fig. 4 is the structural representation of movable insulating barrier assembly 6B.
Fig. 5 is the structural representation of another kind of contact conducting system of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
See Fig. 1, Fig. 2, the contact supporting structure of universal type breaker contact system, including contact support body 3B and movable insulating barrier assembly 6B, movable insulating barrier assembly 6B and moving contact sheet 101B interval is arranged, in order to keep the main contact surface of the moving contact sheet 101B axis as far as possible with middle revolving support axle 7B to parallel, multiple moving contact sheet 101B is kept to be isolated into independent galvanic circle；Two moving contact sheet 101B separately form adjacent contact sheet 1B；Adjacent contact sheet 1B couples flexible connection 8B, forms this utility model contact conducting system；nullInterstitial hole is offered on movable insulating barrier assembly 6B and adjacent contact sheet 1B，It is cascaded by middle revolving support axle 7B，Movable insulating barrier assembly 6B and adjacent contact sheet 1B top offers concentric hole，Support 13BB by upper rotary to be cascaded，Described upper rotary support shaft 13BB be arranged in parallel with middle revolving support axle 7B，Middle revolving support axle 7B is by the insulating press boards 11GA in the step at its two ends and female thread and two fixed plate 4B holes、Spring 12GA、Fixing screw 13GA is fixing to be connected，Fixed plate 4B is fixed on contact support body 3B，Specifically it is fixed in the screwed hole 308B on contact support body 3B by the 304B screw in fixed plate 4B,305B screw in fixed plate 4B is fixed in the screwed hole 310B on contact support body 3B,The hole of the 307B that the 311B cylinder on contact support body 3B is fixed in fixed plate 4B is constituted，Cylinder 12B in fixed plate 4B fixes with the hole screens in the U-type groove of U-shaped Contact Cover one 10B，U-shaped Contact Cover two 5B is fixed by the two ends of middle revolving support axle 7B by screw，In the U-type groove 301 of the two side that middle revolving support axle 7B is set in contact support body 3B，The flexible connection 8B preventing broken string protrudes from both sides to contact with conductor and causes bad generation，And prevent the latter half of movable insulating barrier assembly 6B from running out，Affect the action of contact system；
The vertical direction that the upper end edge contact of described contact support body 3B is compressed is provided with two coaxial grooves 13B, upper rotary support shaft 13BB is installed in two coaxial grooves 13B, upper rotary support shaft 13BB is connected by the step at its two ends is spacing with contact support body 3B with female thread, movable insulating barrier assembly 6B and moving contact sheet 101B is made to be fixed on contact support body 3B, the double swerve after preventing moving contact sheet 101B and movable insulating barrier assembly 6B to be heated.
Described moving contact sheet 101B quantity is more than 15, and not more than 30.
Described contact support body 3B is provided with hole, the location 303B that multiple side by side parallel is arranged, row multiple location hole 303B separately is provided with spring 11B, the degree of depth of location hole 303B is 0.7 times-0.9 times under spring 11B naturalness, the two ends of location hole 303B are symmetrically arranged with two stopper slots, prevent the rotation of spring, described stopper slot is the groove of up/down perforation, and the spring pressurized stopper slot on adjacent contact sheet 1B after location hole 303B and installation is just to setting.
See Fig. 2, described contact support body 3B and be provided with hole, the location 303B that multiple side by side parallel is arranged, it is preferable that two row multiple location hole 303B separately are provided with spring 11B.
Seeing Fig. 3, described contact support body is provided with hole, the location 303B that multiple side by side parallel is arranged, it is preferable that be provided with in big spring set little spring 4G in row multiple location hole 303B separately.
See Fig. 4, described insulating barrier assembly 6B is the board of symmetrical one group of independence, the overall dimensions of the overall dimensions and flexible connection 8B of stating insulating barrier assembly 6B matches, the overall dimensions stating insulating barrier assembly 6B is not more than moving contact sheet 101B, movable insulating barrier assembly 6B material uses BMC (DMC) or BMC (BMC) or sheet molding compound (SMC), the thickness range of movable insulating barrier assembly 6B is [0.2,2.0], unit is mm.
See Fig. 5, adjacent contact sheet 1B connection and have flexible connection 8B, form another kind of contact conducting system of the present utility model.
Operation principle of the present utility model is:
Have employed flexible connection 8B mono-to be connected with moving contact sheet 101B, flexible connection 8B other end is connected with busbar groove, composition moving contact conducting system, with insulating barrier assembly 6B, every road conducting system is isolated into single circuit in the middle of adjacent moving contact conducting system group, thickness is existing thickness the 1/5 of movable insulating barrier assembly 6B, adds the feeder number of 2 to 5 road contact systems than prior art；It is effectively improved chopper make-break capacity and reduces temperature rise.
To alter in upper rotary support shaft 13BB and middle revolving support axle 7B one with insulating barrier assembly 6B in the middle of all moving contact conducting system groups, and be arranged in parallel, and make card in moving contact conducting system group have spring, the other end of spring is stuck on contact support body 3B, make the moving contact conducting system of each group, under the effect of operating mechanism, synchronize the connecting and disconnecting with static contact, improve the KA Rms value that contact system can pass through, make the net synchronization capability of each contact blade in contact system obtain consistent raising.
Claims (8)
- null1. the contact supporting structure of universal type breaker contact system，Including contact support body (3B) and movable insulating barrier assembly (6B)，It is characterized in that，Movable insulating barrier assembly (6B) and moving contact sheet (101B) interval are arranged，Two moving contact sheets (101B) composition adjacent contact sheet (1B) separately，Adjacent contact sheet (1B) couples flexible connection (8B)，Movable insulating barrier assembly (6B) offers interstitial hole on adjacent contact sheet (1B)，It is cascaded by middle revolving support axle (7B)，Movable insulating barrier assembly (6B) offers concentric hole with adjacent contact sheet (1B) top，Support (13BB) by upper rotary to be cascaded，Described upper rotary support shaft (13BB) be arranged in parallel with middle revolving support axle (7B)，Middle revolving support axle (7B) is by the insulating press boards (11GA) in the step at its two ends and female thread and two fixed plates (4B) hole、Spring (12GA)、Fixing screw (13GA) is fixing to be connected，Fixed plate (4B) is fixed on contact support body (3B)，Cylinder (12B) in fixed plate (4B) is fixed with the hole screens in the U-type groove of U-shaped Contact Cover one (10B)，U-shaped Contact Cover two (5B) is fixed by the two ends of middle revolving support axle (7B) by screw，In the U-type groove (301) of the two side that middle revolving support axle (7B) is set in contact support body (3B)；The vertical direction that the upper end edge contact of described contact support body (3B) is compressed is provided with two coaxial grooves (13B), upper rotary support shaft (13BB) is installed in two coaxial grooves (13B), upper rotary support shaft (13BB) is connected by the step at its two ends is spacing with contact support body (3B) with female thread, makes movable insulating barrier assembly (6B) and moving contact sheet (101B) be fixed on contact support body (3B).
- The contact supporting structure of universal type breaker contact system the most according to claim 1, it is characterised in that described moving contact sheet (101B) quantity is more than 15, and not more than 30.
- The contact supporting structure of universal type breaker contact system the most according to claim 1, it is characterized in that, described insulating barrier assembly (6B) is the board of symmetrical one group of independence, the overall dimensions of described insulating barrier assembly (6B) matches with the overall dimensions of flexible connection (8B), and the overall dimensions of described insulating barrier assembly (6B) is not more than moving contact sheet (101B).
- The contact supporting structure of universal type breaker contact system the most according to claim 1, it is characterised in that described movable insulating barrier assembly (6B) material uses BMC or BMC or sheet molding compound.
- The contact supporting structure of universal type breaker contact system the most according to claim 1, it is characterised in that the thickness range of described movable insulating barrier assembly (6B) is [0.2,2.0], and unit is mm.
- The contact supporting structure of universal type breaker contact system the most according to claim 1, it is characterized in that, described contact support body (3B) is provided with the hole, location (303B) that multiple side by side parallel is arranged, hole, a row multiple location (303B) separately is provided with spring (11B), the degree of depth of hole, location (303B) is 0.7 times-0.9 times under spring (11B) naturalness, the two ends of hole, location (303B) are symmetrically arranged with two stopper slots, described stopper slot is the groove of up/down perforation, the spring pressurized stopper slot on adjacent contact sheet (1B) behind hole, location (303B) and installation is just to setting.
- 7. according to the contact supporting structure of the universal type breaker contact system described in claim 1 or 6, it is characterized in that, described contact support body (3B) is provided with the hole, location (303B) that multiple side by side parallel is arranged, preferably, two hole, row multiple location (303B) separately are provided with spring (11B).
- 8. according to the contact supporting structure of the universal type breaker contact system described in claim 1 or 6, it is characterized in that, described contact support body is provided with the hole, location (303B) that multiple side by side parallel is arranged, preferably, hole, a row multiple location (303B) separately is provided with in big spring set little spring (4G).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521133173.7U CN205452216U (en) | 2015-12-30 | 2015-12-30 | Contact support structure of universal breaker contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521133173.7U CN205452216U (en) | 2015-12-30 | 2015-12-30 | Contact support structure of universal breaker contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205452216U true CN205452216U (en) | 2016-08-10 |
Family
ID=56599272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521133173.7U Expired - Fee Related CN205452216U (en) | 2015-12-30 | 2015-12-30 | Contact support structure of universal breaker contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205452216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529229A (en) * | 2015-12-30 | 2016-04-27 | 陕西科技大学 | Contact support structure for air circuit breaker contact system |
| CN111161985A (en) * | 2018-11-07 | 2020-05-15 | 上海良信电器股份有限公司 | Switch contact system |
-
2015
- 2015-12-30 CN CN201521133173.7U patent/CN205452216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529229A (en) * | 2015-12-30 | 2016-04-27 | 陕西科技大学 | Contact support structure for air circuit breaker contact system |
| CN111161985A (en) * | 2018-11-07 | 2020-05-15 | 上海良信电器股份有限公司 | Switch contact system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20161230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |