CN102426946B - Auxiliary contact structure for low-voltage electrical appliance - Google Patents
Auxiliary contact structure for low-voltage electrical appliance Download PDFInfo
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- CN102426946B CN102426946B CN201110360518.2A CN201110360518A CN102426946B CN 102426946 B CN102426946 B CN 102426946B CN 201110360518 A CN201110360518 A CN 201110360518A CN 102426946 B CN102426946 B CN 102426946B
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- auxiliary contact
- guide plate
- pedestal
- acting arm
- auxiliary
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Abstract
The invention discloses an auxiliary contact structure for a low-voltage electrical appliance, which is mainly composed of a motion handle, a tower spring, an ejection rod, a bracket, a guide plate, a spring, a spring plate, a linkage plate, a clamping groove, a movable contact arm, a static contact, a substrate and a cover. By utilizing a symmetrical deign principle, two groups of single-breakpoint transfer contact structures with three terminals are symmetrically distributed at two sides of the substrate of the auxiliary contact structure and the transfer of the movable contact arm of the auxiliary structure is coordinated; the auxiliary contact structure is used for enabling the guide plate to move towards one direction by pushing the ejection rod through the motion handle; when the structure is released, the ejection rod is moved by the motion handle under the effects of the tower spring and the guide plate is moved towards the releasing direction under the effects of the spring, so that the spring plate is forward and backward moved by the guide plate to overcome dead points to transfer the movable contact arm, and an auxiliary contact is transferred between a normally-open state and a normally-closed state in a reciprocating way. According to the auxiliary contact structure provided by the invention, by assuring a transfer speed of the movable contact arm through the structure of the auxiliary contact, the influence on the linkage speed of the auxiliary motion handle by external force of a mechanism is overcome and the service life of the auxiliary contact is prolonged.
Description
Technical field
The present invention relates to the electrical accessory of electric power system low-voltage electrical apparatus, especially relate to a kind of auxiliary contact structure for low-voltage electrical apparatus.
Background technology
Auxiliary contact is the main electrical accessory of low-pressure electronic equipment product, is mainly used to access pilot lamp loop, locked loop, remote transfer signal loop, fault distinguishing loop etc.The single-break change over contact of three terminals in existing structure, when mechanism drives auxiliary movement handle, auxiliary contact switching motion speed is subject to mechanism action rate, and then affect auxiliary connection and interrupting performance, therefore,, in the slow-footed occasion of some mechanism actions, easily make in use melting welding of auxiliary contact and burn, shorten the useful life of auxiliary contact, when reducing production efficiency, increased production cost.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of auxiliary contact structure for low-voltage electrical apparatus for problems of the prior art, its objective is the conversion speed that guarantees acting arm by the structure of auxiliary contact self, overcome the impact of mechanism's external force on auxiliary movement handle interlock speed, the useful life of improving auxiliary contact.
To be this kind comprise pedestal for the auxiliary contact structure of low-voltage electrical apparatus to technical scheme of the present invention, and lid is coordinated lid is fixed on pedestal by the hole on the first axle and pedestal; The first fixed contact, the second fixed contact, acting arm are riveted on respectively one end of the first copper insert on pedestal, the second copper insert, the 3rd copper insert, and the other end of the first described copper insert, the second copper insert, the 3rd copper insert is respectively and often opens binding post, normally closed binding post, common port binding post; Support is fixed on pedestal by tapping screw, prop up at pedestal and the support angle of cut place one end of guide plate, and can rotate up and down around this angle of cut place, and the other end of guide plate withstands on and on shell fragment, forms active link, and guide plate is pressed on spring, and can make interlock plate swing up and down by shell fragment; Push rod is positioned at the top of guide plate and guide plate is led; Action handle is fixed on and is covered by the second axle, and action handle can rotate around the second axle, and action handle is positioned at the top of push rod, and promotes push rod push rod can be moved up and down, and tower spring is arranged on the below that covers and be positioned at action handle, and action handle is resetted; Draw-in groove and interlock plate are riveted together, and described acting arm is stuck in the notch on draw-in groove, and draw-in groove moves up and down and drives acting arm to swing up and down, and contacts with the first fixed contact or the second fixed contact.
Described action handle clockwise direction is spacing on the boss of lid, counterclockwise spacing on the angle of lid.
The centre position of described pedestal is provided with insulation boss along its length, two groups of terminal the first fixed contacts, the second fixed contact, acting arm are symmetrically distributed in respectively the both sides of pedestal along insulation boss, and first copper insert, second copper insert, three copper insert corresponding with the first fixed contact, the second fixed contact, acting arm also have two groups, are symmetrically distributed in equally the both sides of pedestal.
Between the width of rebate of described draw-in groove and the thickness of acting arm, be to guarantee that acting arm has the matched in clearance of micro-deformation, draw-in groove adopts flame-proof PA 6 material.
One end of described acting arm is fixed on the 3rd copper insert, the other end be both sides all with the structure of contact, and the middle part of acting arm is provided with and guarantees that contact is used the turnup structure of capacity, acting arm adopts phosphorus bronze sheet material.
Described interlock plate adopts stainless steel 1Cr18Ni9 material, and the two ends of shell fragment are V-structure, and two ends are stuck on interlock plate and guide plate, and shell fragment adopts 022Cr17Ni12Mo2 material.
This kind with said structure has the following advantages for the auxiliary contact structure of low-voltage electrical apparatus:
1. this kind changes shell fragment position for the auxiliary contact structure product of low-voltage electrical apparatus by guide plate, can make acting arm conversion fast under the promotion of shell fragment, and electric arc easily extinguishes, welding tendency is little, high life, and acting arm conversion speed is fast, and connection and the breaking capacity of auxiliary contact are high.
2. this kind adopts shell fragment to carry out dead point swinging method for the auxiliary contact structure of low-voltage electrical apparatus and can guarantee that moving contact conversion speed is not affected by outside link gear, affected by the elastic force of auxiliary shell fragment own, not only make the auxiliary life-span be improved, and can reduce auxiliary contact volume, reduce manufacturing cost, improve auxiliary contact and connect and interrupting performance, and the mechanism that auxiliary movement handle is driven interlock design brings convenience.
3. this kind, for the excess of stroke of the auxiliary contact structure auxiliary contact of low-voltage electrical apparatus owing to being to guarantee by shell fragment bounce-back degree, so opened between contact moving contact and two fixed contacts apart from little, compact conformation, and cost is low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Structural representation when Fig. 1 is auxiliary contact release of the present invention (lid is half sectional view).
Structural representation when Fig. 2 is auxiliary contact action of the present invention (lid is half sectional view).
Fig. 3 is the vertical view of structure shown in Fig. 1 after removing lid.
Fig. 4 is the upward view of structure shown in Fig. 1.
Fig. 5 is the structural representation of pedestal in the present invention.
Fig. 6 is the vertical view of structure shown in Fig. 5.
Fig. 7 is the structural representation of acting arm in the present invention.
Fig. 8 is the vertical view of structure shown in Fig. 7.
Fig. 9 is the structural representation of draw-in groove in the present invention.
Figure 10 is the left view of structure shown in Fig. 9.
Figure 11 is the structural representation of interlock plate in the present invention.
Figure 12 is the vertical view of structure shown in Figure 11.
Figure 13 is the right view of structure shown in Figure 11.
Figure 14 is the structural representation of shell fragment in the present invention.
Figure 15 is the vertical view of structure shown in Figure 14.
In Fig. 1-15,1: the first fixed contact; 2: the second fixed contacts; 3: acting arm; 4: draw-in groove; 5: spring; 6: the first axles; 7: guide plate; 8: support; 9: pedestal; 10: lid; 11: interlock plate; 12: the second axles; 13: push rod; 14: shell fragment; 15: tower spring; 16: action handle; 17: often open binding post; 18: normally closed binding post; 19: common port binding post; 20: the first copper inserts; 21: the second copper inserts; 22: the three copper inserts.
Embodiment
Operating state while being auxiliary contact release of the present invention by Fig. 1, operating state when Fig. 2 is auxiliary contact action.From structure shown in Fig. 1-2 in conjunction with, this kind comprises pedestal 9 for the auxiliary contact structure of low-voltage electrical apparatus, covers 10 holes by the first axle 6 and pedestal 9 and coordinates lid 10 is fixed on pedestal 9; The first fixed contact 1, the second fixed contact 2, acting arm 3 are riveted on respectively one end of the first copper insert 20 on pedestal 9, the second copper insert 21, the 3rd copper insert 22, and the other end of the first copper insert 20, the second copper insert 21, the 3rd copper insert 22 is respectively often opens binding post 17, normally closed binding post 18, common port binding post 19; Support 8 is fixed on pedestal 9 by tapping screw, prop up at pedestal 9 and support 8 angle of cut places one end of guide plate 7, and can rotate up and down around this angle of cut place, the other end of guide plate 7 withstands on shell fragment 14 and forms active link, and guide plate is pressed on spring 5, and can make interlock plate 11 swing up and down by shell fragment 14; Push rod 13 is positioned at the top of guide plate 7 and guide plate 7 is led; Action handle 16 is fixed on and is covered on 10 by the second axle 12, and action handle 16 can rotate around the second axle 12, action handle 16 is positioned at the top of push rod 13, and promote push rod 13 push rod 13 can be moved up and down, tower spring 15 is arranged on the below of covering on 10 and being positioned at action handle 16, action handle 16 is resetted, and action handle 16 clockwise directions are spacing on the boss of lid 10, counterclockwise spacing on the angle of lid 10.Draw-in groove 4 and interlock plate 11 are riveted together, and acting arm 3 is stuck in the notch on draw-in groove 4, and draw-in groove 4 moves up and down and drives acting arm 3 to swing up and down, and contacts with the first fixed contact 1 or the second fixed contact 2.
Position shown in Fig. 1 is the extreme position that action handle 16 turns clockwise under the effect of spring 5 and tower spring 15, now guide 7 motion ends are in interlock plate 11 tops, interlock plate 11 has a downwarp and suppresses interlock plate 3 draw-in groove 4 is moved downwards at shell fragment 14, thereby acting arm 3 is contacted, configuration state while being auxiliary contact release with the second fixed contact 2.
Position shown in Fig. 2 is the extreme position being rotated counterclockwise under the interlock power F of action Bing16 mechanism effect, now guide 7 motion ends are in interlock plate 11 belows, interlock plate upwarps and makes upwards action of draw-in groove 4 under suppressing at shell fragment 14, thereby acting arm 3 is contacted, configuration state while being auxiliary contact action with the first fixed contact 1.
Fig. 3 is the vertical view of auxiliary contact of the present invention after removing lid.The centre position of pedestal 9 is provided with insulation boss along its length, two groups of terminal the first fixed contacts 1, the second fixed contact 2, acting arm 3 are symmetrically distributed in respectively the both sides of pedestal 9 along insulation boss, and first copper insert 20, second copper insert 21, three copper insert 22 corresponding with the first fixed contact 1, the second fixed contact 2, acting arm 3 also have two groups, are symmetrically distributed in equally the both sides of pedestal 9.
Fig. 4 is the upward view of structure shown in Fig. 1, and Fig. 5 is the structural representation of pedestal in the present invention, and Fig. 6 is the vertical view of structure shown in Fig. 5.From structure shown in Fig. 4-6 in conjunction with, when auxiliary contact action handle 16 is under release condition, by common port binding post 19, the 3rd copper insert 22, acting arm 3, the second fixed contact 2, the second copper insert 21, normally closed binding post 18, form auxiliary contact normally closed interlock; By common port binding post 19, the 3rd copper insert 22, acting arm 3, the first fixed contact 1, the first copper insert 20, often open binding post 17 and form auxiliary contact normally open contact.
Fig. 7 and Fig. 8 are the structural representation of acting arm, one end of acting arm 3 is fixed on the 3rd copper insert 22, the other end be both sides all with the structure of contact, and the middle part of acting arm 3 is provided with and guarantees that contact is used the turnup structure of capacity, acting arm 3 adopts phosphorus bronze sheet materials.
Fig. 9 and Figure 10 are the structural representation of draw-in groove, adopt flame-proof PA 6 material, and this structural member has been to drive acting arm 3 knee-actions, and the thickness of the width of the notch of draw-in groove 4 and acting arm 3 is matched in clearance, to guarantee the micro-deformation of acting arm 3.This insulating material can also proof strength, and left and right acting arm is played to buffer action.
Figure 11-13 are the structural representation of interlock plate, adopt stainless steel 1Cr18Ni9 material, to guarantee some strength and elasticity, one end of interlock plate 11 is used for being stuck on support 8, one end is riveted on draw-in groove 4 in addition, after interlock plate 11 and draw-in groove 4 riveted joints, rises and drives acting arm 3 transformations.
Figure 14 and Figure 15 are the structural representation of shell fragment, adopt 022Cr17Ni12Mo2 material, to guarantee good strength and elasticity.V-structure is made at the two ends of shell fragment 14, and two ends are stuck on interlock plate 11 and guide plate 7.
This kind of auxiliary contact utilizes symmetric design principle, makes the single-break change over contact symmetrical configuration of two groups of three terminals be distributed in the pedestal both sides of auxiliary contact, and the acting arm conversion of supplementary structure is harmonious.Auxiliary contact structure is by action handle, to promote push rod guide plate is moved to a direction, and the handle that moves during release steps down push rod under the effect of tower spring, and guide plate moves to release direction under spring action.Shell fragment is directed to plate positive and negative direction motion and overcomes dead point and make acting arm conversion like this, so make auxiliary contact Chang Kai and normally closed between conversion back and forth.
Auxiliary contact structure mainly changes guide plate and shell fragment position by the position of action handle change push rod, during action, by push rod, promote guide plate, guide plate changes Shi Qiguo dead point, shell fragment position and upwarps, when upwarping, shell fragment drives acting arm conversion, normally open contact changes normally closed interlock into, and normally closed interlock changes normally open contact into.During release, because action handle is stepped down under the effect of tower spring, push rod ejects under the effect of spring reverse push action-oriented plate, and shell fragment has a downwarp by dead-centre position under guide plate effect, drives acting arm conversion simultaneously, and normally open contact and normally closed interlock reset.Shell fragment upwarps or the action that has a downwarp is that shell fragment is movably connected on guide plate on one side, and another side effect and interlock plate drive interlock plate upwarp or have a downwarp, and on interlock plate, riveted the draw-in groove that nylon is done, and by draw-in groove, acting arm are changed up or down.
This kind changes shell fragment position for the auxiliary contact structure product of low-voltage electrical apparatus by guide plate, can make acting arm conversion fast under the promotion of shell fragment, and electric arc easily extinguishes, welding tendency is little, high life, and acting arm conversion speed is fast, and connection and the breaking capacity of auxiliary contact are high; Adopt shell fragment to carry out dead point swinging method and can guarantee that moving contact conversion speed is not affected by outside link gear, affected by the elastic force of auxiliary shell fragment own, not only make the auxiliary life-span be improved, and can reduce auxiliary contact volume, reduce manufacturing cost, improve auxiliary contact and connect and interrupting performance, and the mechanism that auxiliary movement handle is driven interlock design brings convenience.
Claims (6)
1. for an auxiliary contact structure for low-voltage electrical apparatus, it is characterized in that: described auxiliary contact structure comprises pedestal (9), lid (10) will cover (10) by the hole cooperation on the first axle (6) and pedestal (9) and be fixed on pedestal (9); The first fixed contact (1), the second fixed contact (2), acting arm (3) are riveted on respectively one end of the first copper insert (20) on pedestal (9), the second copper insert (21), the 3rd copper insert (22), and the other end of described the first copper insert (20), the second copper insert (21), the 3rd copper insert (22) is respectively and often opens binding post (17), normally closed binding post (18), common port binding post (19); Support (8) is fixed on pedestal (9) by tapping screw, prop up at pedestal (9) and support (8) angle of cut place one end of guide plate (7), and can rotate up and down around this angle of cut place, the other end of guide plate (7) withstands on the upper active link that forms of shell fragment (14), and it is upper that guide plate is pressed in spring (5), and can make interlock plate (11) swing up and down by shell fragment (14); Push rod (13) is positioned at the top of guide plate (7) and guide plate (7) is led; Action handle (16) is fixed on lid (10) by the second axle (12), and action handle (16) can rotate around the second axle (12), action handle (16) is positioned at the top of push rod (13), and promote push rod (13) push rod (13) can be moved up and down, tower spring (15) is arranged on lid (10) above and is positioned at the below of action handle (16), and action handle (16) is resetted; Draw-in groove (4) and interlock plate (11) are riveted together, and described acting arm (3) is stuck in the notch on draw-in groove (4), and draw-in groove (4) moves up and down and drives acting arm (3) to swing up and down, and contacts with the first fixed contact (1) or the second fixed contact (2).
2. a kind of auxiliary contact structure for low-voltage electrical apparatus according to claim 1, is characterized in that: described action handle (16) clockwise direction is spacing on the boss of lid (10), counterclockwise spacing on the angle of lid (10).
3. a kind of auxiliary contact structure for low-voltage electrical apparatus according to claim 1 and 2, it is characterized in that: the centre position of described pedestal (9) is provided with insulation boss along its length, two groups of terminal first fixed contacts (1), the second fixed contact (2), acting arm (3) is symmetrically distributed in respectively the both sides of pedestal (9) along insulation boss, and with the first fixed contact (1), the second fixed contact (2), the first copper insert (20) that acting arm (3) is corresponding, the second copper insert (21), the 3rd copper insert (22) also has two groups, be symmetrically distributed in equally the both sides of pedestal (9).
4. a kind of auxiliary contact structure for low-voltage electrical apparatus according to claim 3, it is characterized in that: between the width of rebate of described draw-in groove (4) and the thickness of acting arm (3), be to guarantee that acting arm (3) has the matched in clearance of micro-deformation, draw-in groove (4) adopts flame-proof PA 6 material.
5. a kind of auxiliary contact structure for low-voltage electrical apparatus according to claim 4, it is characterized in that: one end of described acting arm (3) is fixed on the 3rd copper insert (22), the other end is that both sides are all with the structure of contact, and the middle part of acting arm (3) is provided with and guarantees that contact is used the turnup structure of capacity, and acting arm (3) adopts phosphorus bronze sheet material.
6. a kind of auxiliary contact structure for low-voltage electrical apparatus according to claim 5, it is characterized in that: described interlock plate (11) adopts stainless steel 1Cr18Ni9 material, the two ends of shell fragment (14) are V-structure, two ends are stuck in interlock plate (11) and guide plate (7) is upper, and shell fragment (14) adopts 022Cr17Ni12Mo2 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360518.2A CN102426946B (en) | 2011-11-15 | 2011-11-15 | Auxiliary contact structure for low-voltage electrical appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360518.2A CN102426946B (en) | 2011-11-15 | 2011-11-15 | Auxiliary contact structure for low-voltage electrical appliance |
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| CN102426946A CN102426946A (en) | 2012-04-25 |
| CN102426946B true CN102426946B (en) | 2014-03-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108231440B (en) * | 2016-12-22 | 2020-01-07 | 西门子公司 | Conversion contact piece assembly and auxiliary switch with same |
| CN107887188B (en) * | 2017-12-19 | 2020-10-16 | 宁波市北仑恒业电梯配件厂（普通合伙） | Elevator door contact switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138645Y (en) * | 2008-01-04 | 2008-10-22 | 刘伟铖 | Auxiliary contacts of circuit breaker |
| CN201323164Y (en) * | 2008-11-28 | 2009-10-07 | 常州西玛特电器有限公司 | Explosion-proof temperature controller with forced OFF function |
| CN202363302U (en) * | 2011-11-15 | 2012-08-01 | 安徽鑫龙电器股份有限公司 | Auxiliary contact structure used for low voltage electric device |
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2011
- 2011-11-15 CN CN201110360518.2A patent/CN102426946B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138645Y (en) * | 2008-01-04 | 2008-10-22 | 刘伟铖 | Auxiliary contacts of circuit breaker |
| CN201323164Y (en) * | 2008-11-28 | 2009-10-07 | 常州西玛特电器有限公司 | Explosion-proof temperature controller with forced OFF function |
| CN202363302U (en) * | 2011-11-15 | 2012-08-01 | 安徽鑫龙电器股份有限公司 | Auxiliary contact structure used for low voltage electric device |
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| CN102426946A (en) | 2012-04-25 |
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Address after: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District Road No. 118 Patentee after: ANHUI ZHONGDIAN XINGFA AND XINLONG TECHNOLOGY CO., LTD. Address before: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District Road No. 118 Patentee before: Xinlong Electric-Appliance Co., Ltd., Anhui |