CN1151600A - High effective on-off contact group for electrical appliances - Google Patents

High effective on-off contact group for electrical appliances Download PDF

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Publication number
CN1151600A
CN1151600A CN 95118200 CN95118200A CN1151600A CN 1151600 A CN1151600 A CN 1151600A CN 95118200 CN95118200 CN 95118200 CN 95118200 A CN95118200 A CN 95118200A CN 1151600 A CN1151600 A CN 1151600A
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contact
contacts
electrical
soft
ag
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CN 95118200
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Chinese (zh)
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CN1050686C (en )
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王雅各
穆俊江
陈泽珩
贾化奇
王昌儒
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王雅各
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Abstract

An efficient contact group suitable for fusible cut-out, relay, magnetic starter, air breaker, switch and knife switch features that a pair of contacts is composed of "soft" and "hard" contacts. Said"hard" contact has more concave-convex arcs on its surface. Said "soft" contact is made of "porous" metal containing surface lubricating and protecting agent for electric contact to prevent surface oxidation and dust. Its advantages are large contact area and long service life.

Description

高效、电器通断触点组 Efficient electrical contact set off

本发明属于电器结构物。 The present invention belongs to the electrical structure. 适用于熔断器、继电器、磁力启动器、空气断路器、插头座、开关、闸刀等以空气为绝缘介质的通断控保器件。 Suitable for holding off control device fuses, relays, magnetic starter, air circuit breakers, plugs and sockets, switches, knife or the like to air as insulating medium.

现有电路接联、关断、控保处之电器通断触点组其结构多数为实芯对应光洁弧面或平面形成点、线、面接触,其材料多为纯Ag或Ag合金,粉末冶金,或普通铜或铜合金表面涂以贵金属。 Connection with the conventional circuit, is turned off, the protection of electrical contacts on-off control groups most of the structure of a solid core or a curved surface corresponding to the plane formed smooth point, line, surface contact, which material is mostly pure Ag or Ag alloy powder metallurgy, or normal copper or copper alloy surfaces coated with precious metal. 为了最大限度地利用触点材料,有人提出空芯触点取代实芯触点。 In order to maximize the contact material, the hollow core contact has been proposed substituted solid core contact. 以空气为介质的电器通断触点组是为电路通断设置的,当电器通断触点动作→闭合时,两触点(光洁弧面或平面)接联;开启时→两触点分离。 With air as the medium of electrical contacts on-off circuit is set off set off when the electrical contact closes → operation, two contacts (smooth arc or plane) then linked; separating two contacts when opening → . 在电路无负载状态下,两触点之间只表现为静态接触电阻,当触点组承受电路大载荷电流时,闭合带来的浪涌电流,开启带来的反电动势都对触点组对应的触点表面进行冲击,因而触点组局部极易产生热效应,加之触点组互作环境恶劣--酸、咸、盐雾,油污、尘埃等污染,触点表面很难始终保持良好的导电光洁面,再加上触点所加的闭合压力将引起弹跳,触点弹跳期间必然在两触点之间出现间隙,在电路有载条件下此弹跳间隙将引起电弧,此电弧产生的高温可使触点表面氧化,局部电蚀,甚者产生熔接。 In the unloaded state the circuit between the two contacts only showed static contact resistance when the contact group to withstand large loads current circuit, surge current caused by the closing, opening caused by the counter electromotive force corresponds to the set of contacts the impingement surface contact, contact group thus easy to produce localized thermal effects, coupled with the contact group interaction harsh environments - sour, salty, salt, oil, dust and other pollution, the contact surface is difficult to always maintain good conductivity cleansing light, together with the applied contact pressure will cause the closing bounce, there will be a gap between the two contacts during the contact bounce, the circuit load condition this gap will cause the bounce arc, this arc can be high temperature the contact surface oxidation, galvanic corrosion locally, generation of weld worse. 由于现技术无法克服这一现象,故,只要触点组之间出现一次氧化斑,触点组之间就出现间隙,此间隙不除,恶性循环出现。 Since the current technology can not overcome this phenomenon, therefore, between the first oxidation spots appear whenever contact groups, a gap between the contact set on, the gap is not removed, a vicious cycle occurs.

本发明的目的在于提高以空气为绝缘介质的电器通断触点组有效接触面积,减少触点弹跳,从而达到触点降温条件下提高载荷能力的目的。 Object of the present invention to improve air as insulation medium electrical contact set off the effective contact area, reduced contact bounce, so as to improve the load carrying capacity of the contact cooling conditions.

本发明的目的是以如下方式完成的:由一组对应的触点组所组成。 The object of the present invention is accomplished in the following manner: by a set of corresponding contact group consisting of. 两触点一为实芯“硬”触点,另一触点为多孔层金属“软”触点。 Two contacts as a solid core "hard" contact, the other contact layer of a porous metal "soft" contact.

本发明高效、电器通、断触点组的“硬”触点是经过机械或化学方法加工使其表面呈“多凹凸弧面”(图一、甲a)或“麻面”(图一、甲b)处理过的表面较现技术相同的几何尺寸而表面积将数十倍扩大。 The present invention is effective, through the collector, the "hard" contact break contact sets are processed mechanically or chemically to the surface in a "multi-arc irregularities" (FIG. A, A a) or "pitted" (Figure I, a b) the treated surface of the same technology than the existing surface area of ​​the geometric dimensions and the number of times to expand. 为使“硬”触点扩大的表面积与另一触点吻合,对应的另一触点采用特制的“多孔层金属”制成“软”触点(图一、乙)。 For "hard" contact surface area of ​​contact with another expanding anastomosis, corresponding to the other contact is made of a special "porous layer of a metal", "soft" contact (FIG. A, b). 如此组成的触点组保证了“多凹凸弧面”或“麻面”“硬”触点扩大的表面积得以有效落实,从而达到提高载荷的目的。 Thus ensure contact set consisting of the "multi-arc convex" or "pitted" "hard" expanded surface area contact be effectively implemented, so as to improve the load.

本发明高效、电器通断触点组所采用的多孔层金属是由电化学方法将Ag或不同种类的Ag合金如:Ag-Cu;Ag-Ni;Ag-Meo;Ag-Sno2;Ag-2Cu等涂覆于海棉状有机物上形成“海棉状金属”而得,亦可采用上述Ag或Ag合金金属网叠合制成,另采用弹性多孔金属和金属网镶嵌亦能制成“软”触点。 The present invention is effective, the porous metal layer off electrical contact set used by the electrochemical process different kinds of Ag or an Ag alloy such as: Ag-Cu; Ag-Ni; Ag-Meo; Ag-Sno2; Ag-2Cu like coating formed "sponge-like metal" spongy organic material on the obtained, we can use the above-described Ag or Ag alloy made of laminated metal mesh, expanded metal and the other elastic metal inlay can also be made "soft" contacts. 如此制成的“软”触点其材料消耗与实芯相比节约显著。 "Soft" contact which is thus formed with a solid core material consumption savings compared significantly. 为提高“软”、“硬”触点接触效果可在多孔层金属内注入“电接触表面润滑保护剂”。 To improve the "soft" and "hard" contact effect can be injected into the contact "electrical contact surface lubrication protection agent" within the porous layer of metal. 注入“电接触表面润滑保护剂”的触点能进一步提高导电、降温、防氧化抗尘埃效果。 Injection "electrical contact surface lubrication protection agent" contact can be further improved conductivity, cooling, anti-oxidation effects of dust. 高效、电器通、断触点组注入“电接触表面润滑保护剂”后由于机械力产生的压、吸作用,此润滑保护剂还有充填“软”与“硬”触点间间隙的功能,从而达到减弱电蚀的效果。 After efficient electrical appliances on, break contact group was injected with "electrical contact surface lubrication protection agent" mechanical forces due to the press, the suction effect, this lubricating agent as well as protective filling "soft" and "hard" contact gap between features, so as to achieve the effect of reduced electrical erosion. 本发明高效、电器通、断触点组应用于电磁类器件(继电器磁力启动器、空气断路器等)时由于动触点的质量(图二甲、乙、丙、丁②)只占现有技术的1/30~1/20,理论分析指出,触点闭合时产生的机械弹跳的最大幅值和弹跳次数与动触点的质量某次方成正比。 The present invention is effective, through the electrical, electromagnetic break contact bank to the device type (magnetic starter relays, air circuit breakers, etc.) due to the mass of the movable contact (FIG dimethoxyethane, B, C, D ②) only prior 1/30 ~ 1/20, the theoretical analysis indicated that a maximum power is proportional to the magnitude and quality of the number of bounces and the movable contact bounce generated when a mechanical contact is closed. 由此证明,采用本发明的电磁类器件触点组产生电弧和电蚀的机遇将明显下降,触点组使用寿命将相应延长。 It is evident that the use of electromagnetic type device contact set of the invention arcing and electrical erosion opportunities will fall significantly, a corresponding set of contacts extend service life.

本发明高效、电器通断触点组注入“电接触表面润滑保护剂”后对抗氧化防尘埃功效尤为显著。 The present invention is efficient, injecting electrical contact set off "electrical contact surface lubrication protection agent" after the anti-dust antioxidant effect is particularly significant. 现有技术的触点表面很难保持良好的导电面,在环境恶化--酸、碱、盐雾污油条件下触点表面被氧化是不可避免的。 The contact surface of the prior art is difficult to maintain good conductive surface, environmental degradation - an acid, alkali, salt spray contacts the surface of the waste oil is oxidized condition is inevitable. 本发明的触点组表面由于有“电接触表面润滑保护剂”覆盖,抗氧化效果良好。 The surface of the contact set according to the present invention there is a "protective electrical contact surface lubricating agent" covers, good antioxidant effect. 在抗尘埃方面本发明较现技术尤有特色;现有技术抗尘埃是在电磁器件的外壳上下功夫的,由于密封技术达不到真空程度故尘埃侵入是可能的。 The present invention in terms of the anti-dust particular characteristics than the existing technology; anti-dust prior art is hard in the housing of the solenoid device, since the vacuum sealing techniques so that dust can not reach the degree of invasion is possible. 当尘埃侵入触点组之间就会造成触点间隙,此间隙将引起电弧甚至产生熔接。 When the contact will result in a gap between the entry of dust into the contact group, the gap will cause arcing and even welding. 本发明因触点内注入有“电接触表面润滑保护剂”且触点为多凹凸弧面状和多孔层金属,若尘埃小于多孔层金属孔径,此尘埃对触点组毫无影响,若尘埃大于多孔层金属孔径只可能影响该孔径局部,而润滑保护剂受压、吸机械力作用可使此局部间隙被充填,触点组整体不受影响,当触点组再次动作时此尘埃将被移位,因此不可能造成熔接。 The present invention is injected by the contacts "electrical contact surface lubrication protection agent" and a multi-contact convex arc-shaped and the porous metal layer, when the dust is smaller than the pore size of the porous layer of metal, this has no effect on the contact group dust, if dust It is greater than the diameter of the porous metal layer may only partially affected by the pore size, the pressure lubrication protection agent, suction mechanical force to make this gap is partially filled, the entire contact set is not affected when the contacts re-set operation of this dust will be shift, and therefore unlikely to cause fusion. 实属现技术之不能为也。 Now it is not the technology as well.

实施例一、本发明高效、电器通、断触点组的“硬”触点由纯Ag或Ag-Cu;Ag-Ni;Ag-Meo;Ag-Sno2;Ag-2Cu等合金板、棒经机械车冲、拉、喷或化学腐蚀方法加互可使触点表面呈“多凹凸弧面”状或“麻面”状,如图一甲ab。 One embodiment, the present invention is effective, through the collector, the "hard" contact break contact set by the pure Ag or Ag-Cu; Ag-Ni; Ag-Meo; Ag-Sno2; Ag-2Cu alloy plate and the like, via rods car mechanical punch, pulling, or sprayed chemical etching method can increase the mutual contact surfaces in a "multiple convex arc" shape or "Pits" shape, as shown in a a ab.

实施例二、本发明高效、电器通、断触点组的“软”触点是由纯Ag或Ag-Cu;Ag-Ni;Ag-Meo;Ag-Sno2;Ag-2Cu等合金经电化学方法按如下步骤可直接制成:选用符合设计要求的有机物海棉→化学导电处理→将处理过的海棉粘在联接弹簧片上→电化学处理→脱胎处理→退火→表面处理。 According to the second embodiment, the present invention is effective, through the appliances, "soft" contact of contact set off by a pure Ag or Ag-Cu; Ag-Ni; Ag-Meo; Ag-Sno2; Ag-2Cu alloy electrochemically etc. the method can be directly made as follows: selection of the organic sponge meet the design requirements of the conductive chemical treatment → → treated sponge adhered to the coupling spring piece electrochemical treatment → → → annealing → womb surface treatment process.

实施例三、本发明高效、电器通、断触点组的“软”触点可采用纯Ag或Ag-Cu;Ag-Ni;Ag-Meo;Ag-Sno2;Ag-2Cu等合金金属网叠合予先制成符合设计要求的触点几何形状,再用储能点焊的方法与弹簧片焊在一起。 Embodiment 3 of the present invention is effective, through the appliances, "soft" contact break contact group can be pure Ag or Ag-Cu; Ag-Ni; Ag-Meo; Ag-Sno2; Ag-2Cu alloy such as a metal screen pack They first made contact engagement with the design requirements of the geometry, then the spot welding method of energy storage and the spring piece welded together.

实施例四、本发明高效、电器通、断触点组的“软”触点可采取多孔弹性金属和金属网镶嵌,予先制成符合设计要求的触点几何形状,再用储能点焊的方法与联接弹簧片焊在一起,经表面涂覆Ag亦可制成廉价适用触点。 Embodiment 4 of the present invention is effective, through the appliances, "soft" contact break contact group can take porous elastic metal and the metal mesh inlay, I first made contact with the design requirements of the geometry, then the storage spot the method of coupling the spring pieces welded together, the coated surface suitable for contact inexpensive Ag can also be made.

实施例五、本发明高效、电器通、断触点组的“软”触点是多孔层金属材料制成,可注入“电接触表面润滑保护剂”并将此保护剂存储于多孔层内。 According to a fifth embodiment, the present invention is effective, through the appliances, "soft" contact break contact group is a porous layer made of a metal material, may be injected, "electrical contact surface lubrication protection agent" and the inner porous layer of this storage protection agents.

实施例六、本发明高效、电器通、断触点组应用于电磁类器件(图二甲、乙、丙、丁)中的定触点(图二①)和动触点(图二②)应用于插头(图三1.2.3),应用于低压大容量熔断器的隔离断点,(图四1.2.3)应用于熔断器(图五)应用于闸刀(图六)应用于大、中等电流插接装置(图七.ab)。 Sixth embodiment, the present invention is effective, through the collector, is applied to the fixed contacts break contact group (Figure 2 ①) an electromagnetic device class (FIG dimethoxyethane, B, C, D) and a movable contact (Figure 2 ②) is applied to the plug (Figure 3 1.2.3), a low pressure is applied to a large-capacity fuse isolation breakpoint (FIG four 1.2.3) is applied to the fuse (Figure 5) applied to the knife (Figure 6) is applied to large, connector means moderate current (Figure 7 .ab).

本发明高效电器通断触点组与现有技术相比较在电流载荷相同时可大量节约材料,在触点几何尺寸相同时可数倍扩大电流载荷,尤其突出的是具有抗氧化、防尘埃减弱电蚀等功能。 Efficient electrical contacts of the present invention is set-off compared with the prior art the same material may be considerable savings in the current load, the geometry of the contacts can be the same multiple of the expansion of the load current, in particular the projection having antioxidant, anti-dust weakened galvanic corrosion and other functions. 现有技术中除真空者外在延长触点使用寿命方面无法与本发明相比。 In addition to the prior art vacuum by external prolong the useful life of the contacts can not be compared with the present invention.

Claims (7)

  1. 1.高效、电器通断触点组是由一组对应的触点所组成。 1. efficient electrical contact set off by a group composed of the corresponding contacts. 其特征是:两触点之一为金属“硬”触点,另一触点为多孔层金属“软”触点。 Characterized in that: one of the two metal contacts "hard" contact, the other contact layer of a porous metal "soft" contact.
  2. 2.根据权力要求1所述高效、电器通断触点组其特征是多孔层金属“软”触点间隙内注入有“电接触表面润滑保护剂”。 The power efficiency in claim 1, electrical contacts off group wherein the inner layer of porous metal "soft" contact gap implanted with "electrical contact surface lubrication protection agents."
  3. 3.根据权力要求1、2所述的高效、电器通断触点组其特征是:实芯金属“硬”触点表面为“多凹凸弧面”状。 The high power requirements of the 1, electrical contact set off characterized in that: a solid core metal "hard" contact surfaces "many uneven arc" shape.
  4. 4.根据权力要求1、2所述的高效、电器通断触点组其特征是:实芯金属“硬”触点表面为“麻面”状。 The high power requirements of the 1, electrical contact set off characterized in that: a solid core metal "hard" contact surface "surface Ma" shape.
  5. 5.根据权力要求1、2、3、4所述的高效、电器通断触点组其特征是:多孔层金属“软”触点是用电学方法将纯Ag或Ag合金加互成海棉状发泡金属触点。 The power requirement of the high 1,2,3,4, electrical contacts off group wherein: a porous metal layer of "soft" contact is electrical means pure Ag or Ag alloy added into each other sea cotton-like foam metal contacts.
  6. 6.根据权力要求1、2、3、4所述的高效、电器通断触点组其特征是:多孔层金属“软”触点是采用Ag或Ag合金金属网叠合制成触点。 The power requirement of the high 1,2,3,4, electrical contacts off group wherein: a porous metal layer of "soft" contact is the use of Ag or Ag alloy made of laminated metal contacts.
  7. 7.根据权力要求1、2、3、4所述的高效、电器通断触点组其特征是:多孔层金属“软”触点是采用弹性多孔金属和金属网镶嵌制成触点后再涂覆纯Ag或Ag合金。 The power requirement of the high 1,2,3,4, electrical contacts off group wherein: a porous metal layer of "soft" contact is the use of an elastic metal and a porous metal insert is made after contact coated pure Ag or Ag alloy.
CN 95118200 1995-11-30 1995-11-30 On-off contact group for electrical appliances CN1050686C (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7365280B2 (en) 2004-10-20 2008-04-29 Matsushita Electric Industrial Co., Ltd. Switch and manufacturing method thereof
CN103227077A (en) * 2012-01-27 2013-07-31 德昌电机(深圳)有限公司 Contact arrangement for high-power electrical switching devices
CN102282637B (en) 2009-01-15 2014-02-12 日本小林株式会社 Metal mesh contact and switch and method for producing same
CN107743648A (en) * 2015-06-16 2018-02-27 西门子公司 Quickly closing switch element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7365280B2 (en) 2004-10-20 2008-04-29 Matsushita Electric Industrial Co., Ltd. Switch and manufacturing method thereof
CN100446142C (en) 2004-10-20 2008-12-24 松下电器产业株式会社 Switch and manufacturing method thereof
CN102282637B (en) 2009-01-15 2014-02-12 日本小林株式会社 Metal mesh contact and switch and method for producing same
CN103227077A (en) * 2012-01-27 2013-07-31 德昌电机(深圳)有限公司 Contact arrangement for high-power electrical switching devices
CN107743648A (en) * 2015-06-16 2018-02-27 西门子公司 Quickly closing switch element

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