CN102522266B - Double-breakpoint contactor contact structure adopting flexible coupling device - Google Patents
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- 230000003068 static effect Effects 0.000 abstract description 38
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Abstract
本发明涉及一种触头结构，尤其涉及一种双断点低压接触器触头结构，它包括第一静触头单元（101）、第二静触头单元（102）、第一动触头单元（201）、第二动触头单元（202）、弹性机构（4）、联动装置（5）、软连接（6）及绝缘支架（7）；第一动触头单元（201）与第二动触头单元（202）经软连接（6）固定相接；所述弹性机构（4）固定设于第一动触头单元（201）与第二动触头单元（202）之间；绝缘支架（7）经联动装置（5）与弹性机构（4）固定相接；弹性机构（4）采用片状弹簧结构。本发明开断电压等级高，可以平衡两侧接触压力，达到触头之间有效紧密接触，实现触头表面自清洁功能，从而提高触头使用寿命的目的。
The present invention relates to a contact structure, in particular to a contact structure of a double-breakpoint low-voltage contactor, which comprises a first static contact unit (101), a second static contact unit (102), a first moving contact unit (201), second moving contact unit (202), elastic mechanism (4), linkage device (5), soft connection (6) and insulating bracket (7); the first moving contact unit (201) and the second The two moving contact units (202) are fixedly connected through the flexible connection (6); the elastic mechanism (4) is fixedly arranged between the first moving contact unit (201) and the second moving contact unit (202); The insulating bracket (7) is fixedly connected to the elastic mechanism (4) via the linkage device (5); the elastic mechanism (4) adopts a leaf spring structure. The invention has a high breaking voltage level, can balance the contact pressure on both sides, achieves effective close contact between the contacts, realizes the self-cleaning function of the contact surface, and thus improves the service life of the contacts.
Description
技术领域 technical field
本发明涉及一种触头结构，尤其涉及一种双断点低压接触器触头结构。The invention relates to a contact structure, in particular to a contact structure of a double-break low-voltage contactor.
背景技术 Background technique
接触器是一种自动化的控制电器，主要用于频繁接通或分断交、直流电路，具有控制容量大，可远距离操作，配合继电器可以实现定时操作，连锁控制，各种定量控制和失压及欠压保护。The contactor is an automatic control electrical appliance, mainly used for frequently connecting or breaking AC and DC circuits. It has a large control capacity and can be operated from a long distance. It can realize timing operation, chain control, various quantitative control and voltage loss by cooperating with relays. and undervoltage protection.
现有用于生产中的交流接触器，包括一对触头，通常设置成静触头固定不动，动触头在导通电流的接通位置和切断电流的关断位置之间相对于静触头来回运动。一方面，在多次开断和闭合，没有电流或通有电流的触头由于机械或电的作用逐步磨损，表面渐渐凹凸不平。另一方面，触头接触处存在接触电阻，在正常接通工作和分断电流瞬间，触头会产生局部高温，长期使用之后，触头表面氧化。上述原因使触头之间不能完全良好接触，触头之间的接触电阻逐步增加，接触程度逐步降低，影响接触器的使用寿命和分断能力。当前使用的交流接触器，其电寿命往往远远小于机械寿命。The existing AC contactor used in production includes a pair of contacts, which are usually set so that the static contacts are fixed. back and forth motion. On the one hand, after repeated opening and closing, the contacts without current or with current are gradually worn due to mechanical or electrical effects, and the surface is gradually uneven. On the other hand, there is contact resistance at the contact point of the contact. At the moment of normal connection and breaking of current, the contact will generate local high temperature. After long-term use, the surface of the contact will be oxidized. For the above reasons, the contacts cannot be completely in good contact, the contact resistance between the contacts gradually increases, and the contact degree gradually decreases, which affects the service life and breaking capacity of the contactor. The electrical life of the currently used AC contactors is often much shorter than the mechanical life.
发明内容 Contents of the invention
本发明旨在克服现有技术的不足之处而提供一种体积小，成本低，开断电压等级高，可以平衡两侧接触压力，达到触头之间有效紧密接触，同时实现触头表面自清洁功能，从而达到提高触头使用寿命的采用软连接装置的双断点低压接触器触头结构。The present invention aims to overcome the deficiencies of the prior art and provide a small volume, low cost, high breaking voltage level, which can balance the contact pressure on both sides, achieve effective and close contact between the contacts, and at the same time realize the automatic contact surface of the contacts. Cleaning function, so as to achieve the double breakpoint low-voltage contactor contact structure with soft connection device to improve the service life of the contact.
为解决上述技术问题，本发明是这样实现的。In order to solve the above technical problems, the present invention is achieved in this way.
采用软连接装置的双断点低压接触器触头结构，它包括第一静触头单元、第二静触头单元、第一动触头单元、第二动触头单元、弹性机构、联动装置、软连接及绝缘支架；所述第一动触头单元与第二动触头单元经软连接固定相接；所述弹性机构固定设于第一动触头单元与第二动触头单元之间；所述绝缘支架经联动装置与弹性机构固定相接。The contact structure of the double-breakpoint low-voltage contactor using the flexible connection device includes the first static contact unit, the second static contact unit, the first moving contact unit, the second moving contact unit, the elastic mechanism, and the linkage device , soft connection and insulating support; the first moving contact unit and the second moving contact unit are fixedly connected through soft connection; the elastic mechanism is fixedly arranged between the first moving contact unit and the second moving contact unit Between; the insulating bracket is fixedly connected with the elastic mechanism through the linkage device.
作为一种优选方案，本发明弹性机构可采用片状弹簧结构。As a preferred solution, the elastic mechanism of the present invention can adopt a leaf spring structure.
作为另一种优选方案，本发明在所述绝缘支架的端部分别设有凸起；在所述第一动触头单元及第二动触头单元上与上述凸起对应位置设有卡槽；所述绝缘支架的端部经凸起与第一动触头单元及第二动触头单元固定卡接。As another preferred solution, in the present invention, protrusions are respectively provided at the ends of the insulating brackets; card slots are provided on the first moving contact unit and the second moving contact unit corresponding to the above protrusions ; The end of the insulating bracket is fixedly engaged with the first moving contact unit and the second moving contact unit through the protrusion.
进一步地，本发明在所述第一动触头单元及第二动触头单元上可分别设有凹槽；所述弹性机构与凹槽卡接。Further, in the present invention, grooves may be respectively provided on the first moving contact unit and the second moving contact unit; the elastic mechanism is engaged with the grooves.
更进一步地，本发明在所述联动装置的上端固定设有档杆；所述弹性机构与档杆固定卡接。Furthermore, according to the present invention, a gear lever is fixed on the upper end of the linkage device; the elastic mechanism is fixedly engaged with the gear lever.
另外，本发明所述第一动触头单元及第二动触头单元的前端采用上翘结构。In addition, the front ends of the first moving contact unit and the second moving contact unit in the present invention adopt an upturned structure.
其次，本发明所述第一静触头单元及第二静触头单元可采用U型结构。Secondly, the first static contact unit and the second static contact unit of the present invention can adopt a U-shaped structure.
再次，本发明所述第一静触头单元与第一动触头单元及第二静触头单元与第二动触头单元，于分断位置的仰角存在角度差。Again, in the present invention, the first static contact unit and the first moving contact unit and the second static contact unit and the second moving contact unit have angle differences in elevation angles at the breaking positions.
本发明具有结构合理，紧凑，体积小，成本低，开断电压等级高，平衡双断点触头压力以及触头自清洁功能等特点，其动触头厚度为2～3mm，冲压成型，既保证强度又能减小重量，触头更替容易。另外，本发明触头之间可相对滑动，其助于减小接触电阻，提高触头的导电性能。The invention has the characteristics of reasonable structure, compact size, small volume, low cost, high level of breaking voltage, balanced double break point contact pressure and self-cleaning function of the contact. The strength can be guaranteed and the weight can be reduced, and the replacement of contacts is easy. In addition, the contacts of the present invention can slide relative to each other, which helps to reduce the contact resistance and improve the electrical conductivity of the contacts.
附图说明 Description of drawings
下面结合附图和具体实施方式对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
图1为本发明的主视图。Fig. 1 is the front view of the present invention.
图2为本发明的动触头俯视图。Fig. 2 is a top view of the movable contact of the present invention.
图3为本发明的支架俯视图。Fig. 3 is a top view of the bracket of the present invention.
图中：101、第一静触头单元；102、第二静触头单元；201、第一动触头单元；202、第二动触头单元；3、螺栓；4、片状弹簧；5、联动装置；6、软连接；7、绝缘支架；8、静触头螺栓；9、卡槽；10、凹槽；11、插孔；12、凸起。In the figure: 101, the first static contact unit; 102, the second static contact unit; 201, the first moving contact unit; 202, the second moving contact unit; 3, bolts; 4, leaf springs; 5 , Linkage device; 6, Soft connection; 7, Insulation bracket; 8, Static contact bolt; 9, Card slot; 10, Groove; 11, Jack; 12, Protrusion.
具体实施方式 Detailed ways
如图1所示，采用软连接装置的双断点低压接触器触头结构，它包括第一静触头单元101、第二静触头单元102、第一动触头单元201、第二动触头单元202、弹性机构4、联动装置5、软连接6及绝缘支架7；所述第一动触头单元201与第二动触头单元202经软连接6固定相接；所述弹性机构4固定设于第一动触头单元201与第二动触头单元202之间；所述绝缘支架7经联动装置5与弹性机构4固定相接。As shown in Figure 1, the double breakpoint low-voltage contactor contact structure using a soft connection device includes a first static contact unit 101, a second static contact unit 102, a first moving contact unit 201, and a second moving contact unit. The contact unit 202, the elastic mechanism 4, the linkage device 5, the soft connection 6 and the insulating support 7; the first moving contact unit 201 and the second moving contact unit 202 are fixedly connected through the soft connection 6; the elastic mechanism 4 is fixedly arranged between the first moving contact unit 201 and the second moving contact unit 202; the insulating bracket 7 is fixedly connected to the elastic mechanism 4 through the linkage device 5 .
本发明弹性机构4可采用片状弹簧结构。The elastic mechanism 4 of the present invention can adopt a leaf spring structure.
参见图3，本发明在所述绝缘支架7的端部分别设有凸起12；在所述第一动触头单元201及第二动触头单元202上与上述凸起12对应位置设有卡槽9；所述绝缘支架7的端部经凸起12与第一动触头单元201及第二动触头单元202固定卡接。Referring to Fig. 3, the present invention is respectively provided with protrusions 12 at the ends of the insulating support 7; The slot 9 ; the end of the insulating support 7 is fixedly engaged with the first moving contact unit 201 and the second moving contact unit 202 through the protrusion 12 .
本发明在所述第一动触头单元201及第二动触头单元202上分别设有凹槽10；所述弹性机构4与凹槽10卡接。In the present invention, grooves 10 are respectively provided on the first moving contact unit 201 and the second moving contact unit 202 ; the elastic mechanism 4 is engaged with the grooves 10 .
本发明在所述联动装置5的上端固定设有档杆13；所述弹性机构4与档杆13固定卡接。In the present invention, a gear rod 13 is fixedly arranged on the upper end of the linkage device 5 ; the elastic mechanism 4 is fixedly engaged with the gear rod 13 .
本发明所述第一动触头单元201及第二动触头单元202的前端采用上翘结构。The front ends of the first moving contact unit 201 and the second moving contact unit 202 of the present invention adopt an upturned structure.
本发明所述第一静触头单元101及第二静触头单元102可采用U型结构。The first static contact unit 101 and the second static contact unit 102 of the present invention can adopt a U-shaped structure.
本发明所述第一静触头单元101与第一动触头单元201及第二静触头单元102与第二动触头单元202，于分断位置的仰角存在角度差。According to the present invention, the first static contact unit 101 and the first movable contact unit 201 and the second static contact unit 102 and the second movable contact unit 202 have angle differences in elevation angles at the breaking positions.
本发明主要解决接触器在多次分断电流之后，由触头表面磨损引起开断性能下降的问题，提供一种由软连接装置和片状弹簧为创新点的新型低压交流接触器触头结构，可以平衡两侧接触压力，达到触头之间有效紧密接触，同时实现触头表面自清洁功能，从而达到提高触头使用寿命的目的。The present invention mainly solves the problem that the breaking performance of the contactor decreases due to wear of the contact surface after breaking the current for many times, and provides a new type of low-voltage AC contactor contact structure with a soft connection device and a leaf spring as the innovation point. It can balance the contact pressure on both sides, achieve effective and close contact between the contacts, and at the same time realize the self-cleaning function of the contact surface, so as to achieve the purpose of improving the service life of the contacts.
本发明由第一静触头单元101、第二静触头单元102、第一动触头单元201、第二动触头单元202、片状弹簧4、联动装置5、软连接6及绝缘支架7构成。第一静触头单元101、第二静触头单元102、第一动触头单元201、第二动触头单元202中动、静触头在分断位置仰角有角度差，在闭合位置紧密接触。在闭合过程中，动、静触头有滑动摩擦，这种相对滑动，既有助于清洁触头表面氧化物，又能使触头之间更紧密的相结合，有助于减小接触电阻和提高触头导电性。The present invention consists of a first static contact unit 101, a second static contact unit 102, a first moving contact unit 201, a second moving contact unit 202, a leaf spring 4, a linkage device 5, a soft connection 6 and an insulating support 7 composition. In the first static contact unit 101, the second static contact unit 102, the first moving contact unit 201, and the second moving contact unit 202, there is an angle difference between the moving and static contacts at the breaking position, and they are in close contact at the closing position. . During the closing process, the moving and static contacts have sliding friction. This relative sliding not only helps to clean the oxides on the surface of the contacts, but also makes the contacts more tightly combined, which helps to reduce the contact resistance. and improve contact conductivity.
参见图2，本发明所述第一动触头单元201、第二动触头单元202卡在绝缘支架7的卡槽9内，两侧第一动触头单元201及第二动触头单元202末端分别固定在软连接6的两端，在动、静触头闭合后，由第一静触头单元101、第二静触头单元102、第一动触头单元201、第二动触头单元202与软连接6共同形成导电回路。在触头闭合过程中，软连接6上折一定角度。Referring to Fig. 2, the first moving contact unit 201 and the second moving contact unit 202 of the present invention are stuck in the slot 9 of the insulating support 7, and the first moving contact unit 201 and the second moving contact unit on both sides The ends of 202 are respectively fixed on the two ends of the soft connection 6. After the dynamic and static contacts are closed, the first static contact unit 101, the second static contact unit 102, the first moving contact unit 201, and the second moving contact The head unit 202 and the flexible connection 6 together form a conductive loop. During the closing process of the contacts, the flexible connection 6 is folded up at a certain angle.
本发明所述片状弹4下端分别卡在两侧第一动触头单元201及第二动触头单元202末端的凹槽10内，上端卡在联动装置7的档杆13下，形成连动机构。在触头闭合过程中，联动装置7压缩片状弹簧4，片状弹簧4可以有效平衡两侧压力，推动第一动触头单元201及第二动触头单元202向下运动，直至与第一静触头单元101及第二静触头单元102紧密接触，达到两侧接触压力均衡良好的效果。The lower end of the sheet spring 4 of the present invention is respectively stuck in the grooves 10 at the ends of the first moving contact unit 201 and the second moving contact unit 202 on both sides, and the upper end is stuck under the gear rod 13 of the linkage device 7 to form a chain. moving mechanism. During the contact closing process, the linkage device 7 compresses the leaf spring 4, and the leaf spring 4 can effectively balance the pressure on both sides, and push the first moving contact unit 201 and the second moving contact unit 202 to move downward until they are in contact with the second moving contact unit. The first static contact unit 101 and the second static contact unit 102 are in close contact, so that the contact pressure on both sides is well balanced.
本发明所述两侧第一动触头单元201及第二动触头单元202前端分别上翘，作为引弧角，第一静触头单元101及第二静触头单元102设置为U型结构并通过螺栓与接触器外壳固定，在分断电弧时，动、静触头共同作用产生使电弧向外运动的电动力，在引弧角上熄弧，保障触头寿命。According to the present invention, the front ends of the first moving contact unit 201 and the second moving contact unit 202 on both sides are upturned respectively, and as the arc striking angle, the first static contact unit 101 and the second static contact unit 102 are arranged in a U-shape The structure is fixed with the contactor shell by bolts. When the arc is broken, the dynamic and static contacts work together to generate electric power to move the arc outward, and the arc is extinguished at the arc starting angle to ensure the life of the contacts.
实例中，由于第一静触头单元101与第一动触头单元201及第二静触头单元102与第二动触头单元202，于分断位置的仰角存在角度差，从接触到完全闭合的过程中，触头接触面之间相对滑动，清洁表面凸点和氧化物。片状弹簧4可以平衡两侧动触头压力，保证双断点之间接触力均匀。片状弹簧4和软连接6的设置，使上述两个功能得以良好的实现。在触头完全闭合之后，电流从一端静触头流入，通过动触头、软连接、动触头，最后从另一端静触头流出，实现整个回路的导通。In the example, since the first static contact unit 101 and the first moving contact unit 201 and the second static contact unit 102 and the second moving contact unit 202 have angle differences in elevation angles at the breaking position, from contact to complete closing During the process, the contact surfaces of the contacts slide relative to each other to clean the surface bumps and oxides. The leaf spring 4 can balance the pressure of the moving contacts on both sides to ensure uniform contact force between the double breakpoints. The arrangement of the leaf spring 4 and the soft connection 6 enables the above two functions to be well realized. After the contacts are completely closed, the current flows in from the static contact at one end, passes through the moving contact, the soft connection, the moving contact, and finally flows out from the static contact at the other end to realize the conduction of the entire circuit.
由于分断位置仰角不同，当动、静触头处于闭合位置时，动触头受静触头作用末端翘起，软连接在与动触头相连的部分产生弯折，这个角度在允许范围内。Due to the different elevation angles of the breaking position, when the moving and static contacts are in the closed position, the end of the moving contact is lifted by the action of the static contact, and the soft connection is bent at the part connected to the moving contact. This angle is within the allowable range.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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| CN201110408671.8A CN102522266B (en) | 2011-12-09 | 2011-12-09 | Double-breakpoint contactor contact structure adopting flexible coupling device |
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| CN104465154B (en) * | 2014-12-12 | 2018-01-02 | 贵州泰永长征技术股份有限公司 | A kind of contact module of Double-breakpoint universal circuit breaker |
| CN106158513B (en) * | 2015-04-15 | 2018-10-19 | 浙江正泰电器股份有限公司 | The shell mechanism of magnetic latching relay |
| CN106531571B (en) * | 2016-11-24 | 2018-06-15 | 天津航空机电有限公司 | A kind of auxiliary contact breaker with self-cleaning function |
| CN108231441B (en) * | 2018-03-12 | 2024-02-20 | 西安开天铁路电气股份有限公司 | Contact structure |
| CN110783147B (en) | 2019-09-29 | 2021-03-23 | 华为技术有限公司 | Direct current contactor and car |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB511653A (en) * | 1938-09-01 | 1939-08-22 | Herbert Bagshaw Prentice | Improvements in or relating to double break contacts for electrical contactors or switch gear |
| US3344248A (en) * | 1967-09-26 | Switch for high energy circuits | ||
| US5047603A (en) * | 1988-06-27 | 1991-09-10 | Cge Compagnia Generale Elettromeccanica S.P.A. | Electrical contact structures specifically suited for low power circuits |
| CN101447375A (en) * | 2008-12-25 | 2009-06-03 | 上海电器科学研究所（集团）有限公司 | Combined low-voltage direct current limit switch electric appliance |
| CN202373525U (en) * | 2011-12-09 | 2012-08-08 | 沈阳工业大学 | Contact structure of double-breakpoint and low-voltage contactor adopting flexible connection device |
-
2011
- 2011-12-09 CN CN201110408671.8A patent/CN102522266B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3344248A (en) * | 1967-09-26 | Switch for high energy circuits | ||
| GB511653A (en) * | 1938-09-01 | 1939-08-22 | Herbert Bagshaw Prentice | Improvements in or relating to double break contacts for electrical contactors or switch gear |
| US5047603A (en) * | 1988-06-27 | 1991-09-10 | Cge Compagnia Generale Elettromeccanica S.P.A. | Electrical contact structures specifically suited for low power circuits |
| CN101447375A (en) * | 2008-12-25 | 2009-06-03 | 上海电器科学研究所（集团）有限公司 | Combined low-voltage direct current limit switch electric appliance |
| CN202373525U (en) * | 2011-12-09 | 2012-08-08 | 沈阳工业大学 | Contact structure of double-breakpoint and low-voltage contactor adopting flexible connection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102522266A (en) | 2012-06-27 |
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