CN102426946A - Auxiliary contact structure for low-voltage electrical appliance - Google Patents
Auxiliary contact structure for low-voltage electrical appliance Download PDFInfo
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- CN102426946A CN102426946A CN2011103605182A CN201110360518A CN102426946A CN 102426946 A CN102426946 A CN 102426946A CN 2011103605182 A CN2011103605182 A CN 2011103605182A CN 201110360518 A CN201110360518 A CN 201110360518A CN 102426946 A CN102426946 A CN 102426946A
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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 that is used for low-voltage electrical apparatus.
Background technology
Auxiliary contact is the main electrical accessory of low-pressure electronic equipment product, mainly is used for inserting pilot lamp loop, locked loop, remote transfer signal loop, fault distinguishing loop etc.The single-break change over contact of three terminals in the existing structure, when driving the auxiliary movement handle in mechanism, auxiliary contact switching motion speed is influenced by mechanism action speed; And then auxiliary connection and the interrupting performance of influence; Therefore, in the slow-footed occasion of some mechanism actions, make auxiliary contact melting welding in use easily and burn; Shorten the useful life of auxiliary contact, increased production cost when reducing production efficiency.
Summary of the invention
Technical problem to be solved by this invention is to the problem that exists in the prior art a kind of auxiliary contact structure that is used for low-voltage electrical apparatus to be provided; Its objective is the conversion speed that guarantees acting arm through the structure of auxiliary contact self; Overcome of the influence of mechanism's external force, the useful life of improving auxiliary contact to auxiliary movement handle interlock speed.
Technical scheme of the present invention is that the auxiliary contact structure that this kind is used for low-voltage electrical apparatus comprises pedestal, lid through first with pedestal on the hole cooperate lid be fixed on the pedestal; First fixed contact, second fixed contact, acting arm are riveted on an end of first copper insert on the pedestal, second copper insert, the 3rd copper insert respectively, and the other end of described first copper insert, 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 the pedestal through tapping screw; One end of guide plate props up at pedestal and support angle of cut place, and can rotate up and down around this angle of cut place, and the other end of guide plate withstands on and forms active link on the shell fragment; And guide plate is pressed on the spring, and through shell fragment interlock plate is swung up and down; Push rod is positioned at the top of guide plate and guide plate is led; The action handle is fixed on through second and covers, and the action handle can be around second rotation, and the action handle is positioned at the top of push rod, and promotes push rod push rod can be moved up and down, and the tower spring is installed in the below that covers and be positioned at the action handle, and the action handle is resetted; Draw-in groove and interlock plate are riveted together, and described acting arm is stuck in the notch on the draw-in groove, and draw-in groove moves up and down and drives acting arm and swing up and down, and contacts with first fixed contact or second fixed contact.
Described action handle clockwise direction is spacing on the boss of lid, and is counterclockwise spacing on the angle of lid.
The centre position of described pedestal is provided with the insulation boss along its length; Two groups of terminal first fixed contacts, second fixed contact, acting arm are symmetrically distributed in the both sides of pedestal respectively along the insulation boss; And also there are two groups with first fixed contact, second fixed contact, corresponding first copper insert of acting arm, second copper insert, the 3rd copper insert, are symmetrically distributed in the both sides of pedestal equally.
Be to guarantee that acting arm has the matched in clearance of micro-deformation between the width of rebate of described draw-in groove and the thickness of acting arm, draw-in groove adopts the flame-proof PA 6 material.
One end of described acting arm is fixed on the copper insert, and the other end is the structure that both sides all have the contact, and the middle part of acting arm is provided with the turnup structure that guarantees contact use capacity, acting arm employing phosphorus bronze sheet material.
Described interlock plate adopts stainless steel 1Cr18Ni9 material, and the two sides of shell fragment is a V-structure, and two ends are stuck on interlock plate 11 and the guide plate 7, and shell fragment adopts the 022Cr17Ni12Mo2 material.
The auxiliary contact structure that this kind with said structure is used for low-voltage electrical apparatus has the following advantages:
1. this kind auxiliary contact infrastructure product of being used for low-voltage electrical apparatus changes the shell fragment position through guide plate, and acting arm is changed under the promotion of shell fragment fast, and electric arc extinguishes easily; Welding tendency is little; High life, and the acting arm conversion speed is fast, and the connection of auxiliary contact and breaking capacity are high.
2. this kind auxiliary contact structure of being used for low-voltage electrical apparatus adopts shell fragment to carry out the dead point swinging method and can guarantee that the moving contact conversion speed is not influenced by the outside link gear; Influenced by the elastic force of auxiliary shell fragment own; The auxiliary life-span is improved, and can reduces the auxiliary contact volume, reduce manufacturing cost; Improve auxiliary contact and connect and interrupting performance, and mechanism's interlock design that the auxiliary movement handle drives is brought convenience.
This kind be used for low-voltage electrical apparatus the excess of stroke of auxiliary contact structure auxiliary contact owing to be to lean on shell fragment bounce-back degree to guarantee, so open between contact moving contact and two fixed contacts apart from little, compact conformation, cost is low.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further:
Structural representation when Fig. 1 discharges for auxiliary contact of the present invention (lid is half sectional view).
Structural representation when Fig. 2 moves for auxiliary contact of the present invention (lid is half sectional view).
Fig. 3 is the vertical view of structure shown in Figure 1 after removing lid.
Fig. 4 is the upward view of structure shown in Figure 1.
Fig. 5 is the structural representation of pedestal among the present invention.
Fig. 6 is the vertical view of structure shown in Figure 5.
Fig. 7 is the structural representation of acting arm among the present invention.
Fig. 8 is the vertical view of structure shown in Figure 7.
Fig. 9 is the structural representation of draw-in groove among the present invention.
Figure 10 is the left view of structure shown in Figure 9.
Figure 11 is the structural representation of interlock plate among 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 among 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; 7: guide plate; 8: support; 9: pedestal; 10: lid; 11: interlock plate; 12: the second; 13: push rod; 14: shell fragment; 15: the tower spring; 16: the action handle; 17: often open binding post; 18: normally closed binding post; 19: the common port binding post; 20: the first copper inserts; 21: the second copper inserts; 22: the three copper inserts.
Embodiment
Operating state when discharging for auxiliary contact of the present invention by Fig. 1, the operating state when Fig. 2 moves for auxiliary contact.Combine to know that the auxiliary contact structure that this kind is used for low-voltage electrical apparatus comprises pedestal 9 by structure shown in Fig. 1-2, lid 10 through first 6 with pedestal 9 on the hole cooperate and will cover 10 and be fixed on the pedestal 9; First fixed contact 1, second fixed contact 2, acting arm 3 are riveted on an end of first copper insert 20 on the pedestal 9, second copper insert 21, the 3rd copper insert 22 respectively, and the other end of first copper insert 20, 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 the pedestal 9 through tapping screw; One end of guide plate 7 props up at pedestal 9 and support 8 angle of cut places; And can rotate up and down around this angle of cut place; The other end of guide plate 7 withstands on the shell fragment 14 and forms active link, and guide plate is pressed on the spring 15, and through shell fragment 14 interlock plate 11 is swung up and down; Push rod 13 is positioned at the top of guide plate 7 and guide plate 7 is led; Action handle 16 is fixed on through second 12 and covers on 10; And action handle 16 can be around second 12 rotation, and action handle 16 is positioned at the top of push rod 13, and promotion push rod 13 can move up and down push rod 13; Tower spring 15 is installed in 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, and are counterclockwise spacing on the angle of lid 10.Draw-in groove 4 is riveted together with interlock plate 11, and acting arm 3 is stuck in the notch on the draw-in groove 4, and draw-in groove 4 moves up and down and drives acting arm 3 and swing up and down, and contacts with first fixed contact 1 or second fixed contact 2.
Position shown in Figure 1 is the extreme position that action handle 16 turns clockwise under the effect of spring 5 and tower spring 15; This moment, guide 7 motion ends were in interlock plate 11 tops; Interlock plate 11 has a downwarp at shell fragment 14 and suppresses interlock plate 3 draw-in groove 4 is moved downwards; Thereby acting arm 3 is contacted, configuration state when being auxiliary contact release with second fixed contact 2.
Position shown in Figure 2 is the extreme position that action handle 16 is rotated counterclockwise under the interlock power F of mechanism effect; This moment, guide 7 motion ends were in interlock plate 11 belows; Interlock plate upwarps at shell fragment 14 and makes upwards action of draw-in groove 4 under suppressing; Thereby acting arm 3 is contacted, configuration state when being the auxiliary contact action with 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 the insulation boss along its length; Two groups of terminals, first fixed contact 1, second fixed contact 2, acting arm 3 are symmetrically distributed in the both sides of pedestal 9 respectively along the insulation boss; And also there are two groups with corresponding first copper insert 20 of first fixed contact 1, second fixed contact 2, acting arm 3, second copper insert 21, the 3rd copper insert 22, are symmetrically distributed in the both sides of pedestal 9 equally.
Fig. 4 is the upward view of structure shown in Figure 1, and Fig. 5 is the structural representation of pedestal among the present invention, and Fig. 6 is the vertical view of structure shown in Figure 5.Combine and to know by structure shown in Fig. 4-6; When auxiliary contact action handle 16 is under the release condition, form the auxiliary contact normally closed interlock by common port binding post 19, the 3rd copper insert 22, acting arm 3, second fixed contact 2, second copper insert 21, normally closed binding post 18; By common port binding post 19, the 3rd copper insert 22, acting arm 3, first fixed contact 1, first copper insert 20, often open binding post 17 and form the auxiliary contact normally open contact.
Fig. 7 and Fig. 8 are the structural representation of acting arm, and an end of acting arm 3 is fixed on the copper insert 22, and the other end is the structure that both sides all have the contact, and the middle part of acting arm 3 is provided with the turnup structure that guarantees contact use capacity, acting arm 3 employing phosphorus bronze sheet materials.
Fig. 9 and Figure 10 are the structural representation of draw-in groove, adopt the 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 buffer action.
Figure 11-13 is the structural representation of interlock plate; Adopt stainless steel 1Cr18Ni9 material, to guarantee certain intensity and elasticity, an end of interlock plate 11 is used for being stuck on the support 8; An other end is riveted on the draw-in groove 4, and interlock plate 11 rises with draw-in groove 4 riveted joint backs and drives acting arm 3 transformations.
Figure 14 and Figure 15 are the structural representation of shell fragment, adopt the 022Cr17Ni12Mo2 material, to guarantee good strength and elasticity.V-structure is made on the two sides of shell fragment 14, and two ends are stuck on interlock plate 11 and the guide plate 7.
This kind auxiliary contact utilizes the 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.The auxiliary contact structure is to promote push rod by the action handle guide plate is moved to a direction, and the action handle steps down push rod under the effect of tower spring during release, and guide plate moves to release direction under spring action.Shell fragment is directed to the motion of the positive and negative direction of plate and overcomes the dead point and make acting arm conversion like this, so make auxiliary contact Chang Kai and normally closed between transition back and forth.
The auxiliary contact structure mainly changes guide plate and shell fragment position by the position of action handle change push rod; Promote guide plate by push rod during action; Guide plate change shell fragment position makes it cross the dead point and upwarps; Drive acting arm when shell fragment upwarps and change, normally open contact changes normally closed interlock into, and normally closed interlock changes normally open contact into.Because the action handle is stepped down under the effect of tower spring, and push rod oppositely promotes to eject under the guide plate effect at spring, and shell fragment has a downwarp through the dead-centre position under the guide plate effect, drives acting arm conversion simultaneously, normally open contact and normally closed interlock reset during release.Shell fragment upwarps or the action that has a downwarp is that shell fragment is movably connected on the guide plate on one side, another side effect and interlock plate, and the drive interlock plate upwarps or has a downwarp, and has riveted the draw-in groove that nylon is done on the interlock plate, by draw-in groove acting arm is changed up or down.
The auxiliary contact infrastructure product that this kind is used for low-voltage electrical apparatus changes the shell fragment position through guide plate, can make acting arm conversion fast under the promotion of shell fragment, and electric arc extinguishes easily; Welding tendency is little; High life, and the acting arm conversion speed is fast, and the connection of auxiliary contact and breaking capacity are high; Adopt shell fragment to carry out the dead point swinging method and can guarantee that the moving contact conversion speed is not influenced by the outside link gear; Influenced by the elastic force of auxiliary shell fragment own; The auxiliary life-span is improved, and can reduces the auxiliary contact volume, reduce manufacturing cost; Improve auxiliary contact and connect and interrupting performance, and mechanism's interlock design that the auxiliary movement handle drives is brought convenience.
Claims (6)
1. auxiliary contact structure that is used for low-voltage electrical apparatus, it is characterized in that: described auxiliary contact structure comprises pedestal (9), lid (10) will cover (10) through the cooperation of the hole on first (6) and the pedestal (9) and be fixed on the pedestal (9); First fixed contact (1), second fixed contact (2), acting arm (3) are riveted on an end of first copper insert (20) on the pedestal (9), second copper insert (21), the 3rd copper insert (22) respectively, and the other end of described first copper insert (20), 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 the pedestal (9) through tapping screw; One end of guide plate (7) props up at pedestal (9) and support (8) angle of cut place; 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 go up to form active link, and guide plate is pressed on the spring (15), and through shell fragment (14) interlock plate (11) is swung up and down; Push rod (13) is positioned at the top of guide plate (7) and guide plate (7) is led; Action handle (16) is fixed on the lid (10) through second (12); And action handle (16) can rotate around second (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 installed in the below that action handle (16) was gone up and be positioned to lid (10), resets to moving handle (16); Draw-in groove (4) and interlock plate (11) are riveted together, and described acting arm (3) is stuck in the notch on the draw-in groove (4), and draw-in groove (4) moves up and down and drives acting arm (3) and swing up and down, and contacts with first fixed contact (1) or second fixed contact (2).
2. a kind of auxiliary contact structure that is used 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), and is counterclockwise spacing on the angle of lid (10).
3. a kind of auxiliary contact structure that is used 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 the insulation boss along its length; Two groups of terminal first fixed contacts (1), second fixed contact (2), acting arm (3) are symmetrically distributed in the both sides of pedestal (9) respectively along the insulation boss; And also there are two groups with first fixed contact (1), second fixed contact (2), corresponding first copper insert of acting arm (3) (20), second copper insert (21), the 3rd copper insert (22), are symmetrically distributed in the both sides of pedestal (9) equally.
4. a kind of auxiliary contact structure that is used for low-voltage electrical apparatus according to claim 3; It is characterized in that: be to guarantee that acting arm (3) has the matched in clearance of micro-deformation between the thickness of the width of rebate of described draw-in groove (4) and acting arm (3), draw-in groove (4) adopts the flame-proof PA 6 material.
5. a kind of auxiliary contact structure that is used for low-voltage electrical apparatus according to claim 4; It is characterized in that: an end of described acting arm (3) is fixed on the copper insert (22); The other end is the structure that both sides all have the contact; And the middle part of acting arm (3) is provided with and guarantees that contact uses the turnup structure of capacity, and acting arm (3) adopts the phosphorus bronze sheet material.
6. a kind of auxiliary contact structure that is used 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 sides of shell fragment (14) is a V-structure; Two ends are stuck on interlock plate 11 and the guide plate 7, and shell fragment (14) adopts the 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN102426946A true CN102426946A (en) | 2012-04-25 |
| CN102426946B CN102426946B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110360518.2A Active CN102426946B (en) | 2011-11-15 | 2011-11-15 | Auxiliary contact structure for low-voltage electrical appliance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887188A (en) * | 2017-12-19 | 2018-04-06 | 宁波市北仑恒业电梯配件厂（普通合伙） | A kind of elevator door contact switch |
| CN108231440A (en) * | 2016-12-22 | 2018-06-29 | 西门子公司 | Convert contact assemblies and with its auxiliary 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 |
-
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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231440A (en) * | 2016-12-22 | 2018-06-29 | 西门子公司 | Convert contact assemblies and with its auxiliary switch |
| CN108231440B (en) * | 2016-12-22 | 2020-01-07 | 西门子公司 | Conversion contact piece assembly and auxiliary switch with same |
| CN107887188A (en) * | 2017-12-19 | 2018-04-06 | 宁波市北仑恒业电梯配件厂（普通合伙） | A kind of elevator door contact switch |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102426946B (en) | 2014-03-12 |
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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 |