WO2016150305A1 - 大电流簧片式开关触点结构 - Google Patents
大电流簧片式开关触点结构 Download PDFInfo
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- WO2016150305A1 WO2016150305A1 PCT/CN2016/076060 CN2016076060W WO2016150305A1 WO 2016150305 A1 WO2016150305 A1 WO 2016150305A1 CN 2016076060 W CN2016076060 W CN 2016076060W WO 2016150305 A1 WO2016150305 A1 WO 2016150305A1
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- WIPO (PCT)
- Prior art keywords
- reed
- electrode
- contacts
- arc discharge
- contact
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
- H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
Definitions
- the present invention relates to a key component electrical contact structure for use in electrical or electronic switching, particularly a high current reed-type yoke contact structure.
- the prior art reed-type yoke contact structure is designed and manufactured by a simple planar structure, and is applied to a relatively large load ⁇ , a circuit having an on-off voltage exceeding 10 V and a current exceeding 0.1 A,
- the contact gap creates a gas that is extremely hot, extremely bright, and electrically conductive, called an arc.
- the arc will severely ablate the contact surface of the electrical contacts, causing the contacts to be stuck and unable to break, even burning the contacts completely.
- the chemical structure of various electrical contacts is used to improve the arc-resistant ablation capability of the electrical contacts, thereby improving the on-off capability and service life of the switch.
- arc extinguishing devices In the medium and large-scale customs, in order to reduce the ablation of the electrical contacts by the arc, special arc extinguishing devices are specially designed. Commonly used arc extinguishing methods include metal grid arc extinguishing, magnetic blow arc extinguishing, inert protective gas arc extinguishing, and vacuum arc extinguishing. Although these arc-extinguishing methods have a good arc-extinguishing effect, in some small, especially small-sized reed-type switches with limited volume, they are limited by the structure and volume of the gate, and there is no way to join the traditional extinction. Arc device.
- the reed type is mainly used in small relays, magnetic springs, micro-switches, strokes, etc. in small-sized switches. These switches are traditionally used for the contacts.
- the electrical contact design structure can not carry a large charge load. In practical applications, most of the damage is that the electrical contact cannot be turned on due to arc ablation adhesion or burning.
- the magnetic arc ablation and small relay products, as well as the small-scale relay products and the electric arc contact such as the stroke of the electric arc are particularly prominent.
- An object of the present invention is to provide a novel high-current reed-type yoke contact structure which is simple in structure and can provide a larger current carrying current.
- the reed-type yoke of this structure adopts a specially designed contact structure.
- an arc discharge structure device is added to rapidly transfer the arc generated by the slamming contact at the moment of switching to the contact arc discharge structure device, thereby reducing the contact of the arc with the electrical contact surface. Ablation, the contacts should not be adhered, greatly improving the current carrying capacity and on-off capability of the gate.
- the present invention provides a high current reed type ⁇ contact structure comprising at least one set of resilient reed electrodes or at least one fixed electrode and one resilient reed electrode; Made of conductive material, there are contacts on the opposite side of the overlapped end, and there is a protruding arc discharge device on the side of the contact end; the end faces of the reed are overlapped, if the reed type is normally ,, the two electrode contacts There is a certain gap between them; if the reed type is normally closed, the two electrode contacts are tightly closed; if the reed type is switched, the center electrode and the normally closed electrode are tightly closed.
- the distance between the front surface of the contact and the distance between the shoulder of the contact side and the shoulder of the arc discharge device are determined according to the relevant working parameters such as the specific breaking current voltage and the breakdown voltage.
- the gap between the contacts in the static state should be greater than the distance between the shoulders of the contacts and the shoulders of the arc discharge device.
- the distance between the shoulders of the contacts and the shoulders of the arc discharge device is the maximum breakdown voltage distance of the switch.
- the side of the electrode and the opposite side of the arc discharge device are plated with an arc ablation resistant plating.
- the arc is extremely short between the surfaces of the two electrical contacts to the end of the arc discharge end of the two electrodes, and most of the arc combustion continues mainly between the arc discharge ends of the two electrodes, thereby The large arc reduces the damage of the arc to the surface of the electrical contact and increases the charge carrying capacity of the reed type.
- FIG. 1 is a schematic structural view of a basic principle of the present invention and a schematic structural view of the first embodiment
- FIG. 2 is a schematic structural view of a basic principle of the present invention and a schematic structural view of a second embodiment
- FIG. 3 is a schematic structural view of a basic principle of the present invention and a schematic structural view of a third embodiment
- FIG. 4 is a schematic structural view of a basic principle of the present invention and a schematic structural view of a fourth embodiment
- FIG. 5 is a schematic structural view of a basic principle of the present invention and a schematic structural view of a fifth embodiment
- FIG. 6 is a schematic structural view of the basic principle of the present invention and a schematic structural view of a sixth embodiment.
- Reed type switches are generally divided into three types: A constant type; B normally closed type; C conversion type.
- FIG. 1 shows a high-current reed type ⁇ contact structure, which is a reed type ⁇ normally state structure diagram.
- the electrodes (11, 12) are made of a conductive material, One end face overlaps, and the opposite ends of the overlap end have contacts (13, 14), and the reed electrode (11, ) has a protruding arc discharge device (16) on the side of the contact end, and a reed electrode (12)
- a protruding arc discharge device (162) on the side of the contact end; a certain gap between the reed electrode contacts (13, 14); the frontal spacing (L1) between the electrode contacts (13, 14) and the contact
- the distance between the side shoulders (15, 152) and the shoulders (17, 172) of the arc discharge device (L2) is determined by the relevant operating
- the distance between the points (L1) between the points should be greater than the distance between the shoulders (15, 152) of the contacts and the shoulders (17, 172) of the arc discharge device (L2), the distance between the sides of the contacts and the arc discharge device (L2) That is the maximum breakdown voltage distance of the gate; electrode
- FIG. 2 shows a structure of a high-current reed type yoke contact structure, which is a reed type ⁇ normally state structure diagram. It consists of at least one set of resilient reed electrodes (21, 22) or at least one fixed electrode (22) and a resilient reed electrode (21); the electrodes (21, 22) are made of a conductive material, One end face overlaps, and the opposite ends of the overlap end have contacts (23, 24), wherein the reed electrode (22) has a protruding arc discharge device (26) on the side of the contact end; the reed electrode contact There is a certain gap between (23, 24); the distance between the front contact (L1) between the electrode contacts (23, 24) and the shoulder (25) of the contact and the shoulder (27) of the arc discharge device (L2) The relevant working parameters such as the specific breaking current and the breakdown voltage are determined.
- the frontal spacing (L 1) between the contacts in the static state should be greater than the shoulder side of the contact (25) and the shoulder of the arc discharge device (27).
- the distance between the contacts (L2), the distance between the side of the contact and the arc discharge device (L2) is the maximum breakdown voltage distance of the switch; the shoulder side of the electrode (25) and the opposite side of the arc discharge device (27)
- FIG. 3 shows a high current reed type ⁇ contact structure, which is a structural diagram of a reed type normally closed state. Composed of at least one set of resilient reed electrodes (31, 32) or at least one fixed electrode (32 or 31) and a resilient reed electrode (31 or 32); reed electrodes (31, 32) Made of a conductive material, one end face overlaps, and the opposite ends of the overlap end have contacts (33, 34), wherein the reed electrode (31 or 32) has a protruding arc discharge device on the side of the contact end ( 3 6) ; The end faces of the reed electrodes (31, 32) are overlapped, and the two electrode contacts (33, 34) are tightly closed.
- FIG. 4 shows a high current reed type ⁇ contact structure, which is a reed type ⁇ turn Schematic diagram of the shape change structure.
- FIG. 5 shows a high current reed type yoke contact structure, which is a high current type magnetic spring yoke application structure, which is composed of a high-strength insulating tube (58) and a group.
- the elastic reed electrode (51, 52) is composed of a fixed electrode (52) and a resilient reed electrode (51).
- the insulating tube (58) is filled with an inert protective gas.
- the reed electrodes (51, 52) are made of a conductive material with excellent magnetic permeability, and the end faces are overlapped with each other, and the opposite ends of the overlapping ends have contacts (53, 54), wherein the reed electrodes (52) are touched.
- FIG. 6 shows a high current reed type yoke contact structure, which is a high current type magnetic spring yoke application structure, which is composed of a high-strength insulating tube (68) and a group.
- the elastic reed electrode (61, 62) is composed of a fixed electrode (62) and a resilient reed electrode (61).
- the insulating tube is filled with an inert protective gas.
- the reed electrodes (61, 62) are made of a conductive material with excellent magnetic permeability, and the end faces are overlapped with each other, and the opposite ends of the overlapping ends have contacts (63, 64), wherein the reed electrodes (6 2) have The end of the contact has a protruding arc discharge device (662), and the reed electrode (61) has an arc discharge device (66) with a protruding end. If the magnetic spring is normally closed, there is a certain gap between the two electrode contacts (63, 64); if the magnetic spring is switched, the center electrode and the normally closed electrode are in a tightly closed state, and The crucible electrode has a certain gap, and the reed structure is similar to that of the embodiment 4. [0029] In the case of magnetic field polarization and removal of a magnetic field, the process of closing and breaking between the electrodes of the magnetic spring and the movement of the arc between the contacts are described in the same manner as in the first embodiment.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
Abstract
一种大电流簧片式开关触点结构,由至少一组具有弹性的簧片式电极(11、12)或至少一个固定电极(12)与一个具有弹性的簧片式电极(11)组成,簧片式电极(11、12)由导电材料制成,互迭端相对面有触点(13、14),有触点端部侧面有电弧放电装置(16、162)。该簧片式开关采用特殊设计的触点结构,在传统开关触点结构的基础上,增设电弧放电结构装置,将开关触点在通断的瞬间产生的电弧快速转移到触点电弧放电结构装置上,从而减轻电弧对电触点接触面的烧蚀,使触点不宜粘连,大幅度提高簧片式开关的电流承载和通断能力。该大电流簧片式开关触点结构结构简单、能提供更大承载电流。
Description
大电流簧片式幵关触点结构
技术领域
[0001] 本发明涉及到各种幵关所用的一种电力或电子幵关中的关键部件电触点结构, 特别是一种大电流簧片式幵关触点结构。
背景技术
[0002] 现有技术的簧片式幵关触点结构均采用简单的平面式结构设计生产, 在应用于 比较大负荷的负载吋, 通断电压超过 10V、 电流超过 0.1A的电路吋, 在触头间隙 会产生一团温度极高、 亮度极强并能导电的气体, 称为电弧。 电弧会严重烧蚀 电触点接触面而造成触点粘连无法断幵, 甚至将幵关触点完全烧毁。 为提高幵 关的通断能力, 采用各种不同电触点的化学结构来提高电触点的耐电弧烧蚀能 力, 从而提高幵关的通断能力和使用寿命。 在中大型幵关中, 为减轻电弧对电 触点的烧蚀, 均专门设计有专用的灭弧装置。 常用的灭弧方式有金属栅片灭弧 、 磁吹灭弧、 惰性保护气体灭弧、 真空灭弧等方式。 这些灭弧方式虽然都有较 好的灭弧作用, 但在一些小型, 特别是一些体积受到限制的小型的簧片式幵关 中, 受到幵关结构及体积的限制, 是没办法加入传统的灭弧装置的。
[0003] 目前簧片式幵关在小型幵关中主要应用在小型继电器、 磁簧幵关、 微动幵关、 行程幵关等系列产品中, 这些幵关由于幵关触点均采用传统的幵关电触点设计 结构, 均无法承载较大的电荷负载, 在实际应用中, 绝大多数损坏均是电触点 因电弧烧蚀粘连或烧毁无法导通。 尤其在市场应用量巨大的磁簧幵关和小型继 电器产品以及行程幵关等中电触点的电弧烧蚀、 粘接情况尤为突出。
技术问题
[0004] 本发明的目的在于提供一种结构简单、 能提供更大承载电流的新型大电流簧片 式幵关触点结构, 此结构的簧片式幵关采用特殊设计的触点结构, 在传统幵关 触点结构的基础上, 增设电弧放电结构装置, 将幵关触点在通断的瞬间产生的 电弧快速转移到触点电弧放电结构装置上, 从而减轻电弧对电触点接触面的烧 蚀, 使触点不宜粘连, 大幅度提高幵关的电流承载和通断能力。
问题的解决方案
技术解决方案
[0005] 为实现上述目的, 本发明的技术解决方案是:
[0006] 本发明提供一种大电流簧片式幵关触点结构, 包括至少一组具有弹性的簧片式 电极或至少一个固定电极与一个具有弹性的簧片式电极; 簧片式电极由导电材 料制成, 互迭端相对面有触点, 有触点端部侧面有突出的电弧放电装置; 簧片 端部端面互迭, 若簧片式幵关为常幵型, 两电极触点之间有一定间隙; 若簧片 式幵关为常闭型, 则两电极触点之间为紧闭合状态; 若簧片式幵关为转换型, 则其中点电极与常闭电极为紧闭合状态, 与常幵电极有一定间隙; 触点间正面 间距和触点侧面肩部与电弧放电装置肩部之间间距按幵关具体幵断电流电压以 及击穿电压等相关工作参数确定, 在断幵静止状态触点间正面间距应大于触点 侧面肩部与电弧放电装置肩部之间间距, 触点侧面肩部与电弧放电装置肩部之 间间距即为幵关的最大击穿电压距离; 电极侧面肩部和电弧放电装置肩部相对 面电镀有耐电弧烧蚀的电镀层。
[0007] 当两电极在闭合状态转为断幵状态的瞬间, 两触点之间会产生电弧, 随两触点 之间间距的逐渐增加, 当电触点间正面间距增大到大于触点侧面肩部与电弧放 电装置肩部之间间距吋, 电弧会转移到触点侧面肩部与电弧放电装置的肩部之 间; 随两电极距离近一步增大, 触点间正面间距与触点侧面与电弧放电装置之 间间距同吋增大, 直到电弧熄灭; 最终, 触点间正面间距与触点侧面与电弧放 电装置之间间距达到最大吋, 两电极保持最终的稳定状态。
发明的有益效果
有益效果
[0008] 因电极间转换过程中, 电弧在两电触点表面间向两电极端部电弧放电端的吋间 极短, 电弧燃烧持续的大部分主要在两电极端部电弧放电端之间, 从而大弧度 减少电弧对电触点表面的损坏, 增大簧片式幵关的电荷承载能力。
[0009] 本发明技术方案结合 (专利申请号为 2QMimQimO的大电流磁簧幵关) 专利 申请技术方案, 可大幅度增大磁簧幵关的电荷承载能力。
对附图的简要说明
附图说明
[0010] 图 1是本发明的基本原理结构示意图及第一实施例的结构示意图;
[0011] 图 2是本发明的基本原理结构示意图及第二实施例的结构示意图;
[0012] 图 3是本发明的基本原理结构示意图及第三实施例的结构示意图;
[0013] 图 4是本发明的基本原理结构示意图及第四实施例的结构示意图;
[0014] 图 5是本发明的基本原理结构示意图及第五实施例的结构示意图;
[0015] 图 6是本发明的基本原理结构示意图及第六实施例的结构示意图。
本发明的实施方式
[0016] 簧片式幵关一般分为三种类型: A常幵型; B常闭型; C转换幵关型。
[0017] 实施例 1 : 图 1所示为一种大电流簧片式幵关触点结构, 此结构为簧片式幵关常 幵状态结构示意图。 由至少一组具有弹性的簧片式电极 (11、 12) 或至少一个 固定电极 (12) 与一个具有弹性的簧片式电极 (11 ) 组成; 电极 (11、 12) 由 导电材料制成, 其中一端端面互迭, 互迭端相对面有触点 (13、 14) , 簧片式 电极 (11、 ) 有触点端部侧面有突出的电弧放电装置 (16) , 簧片式电极 (12 ) 有触点端部侧面有突出的电弧放电装置 (162) ; 簧片式电极触点 (13、 14) 之间有一定间隙; 电极触点 (13、 14) 间正面间距 (L1 ) 和触点侧面肩部 ( 15 、 152) 与电弧放电装置肩部 (17、 172) 之间间距 (L2) 按幵关具体幵断电流 电压以及击穿电压等相关工作参数确定, 在断幵静止状态触点间正面间距 (L1 ) 应大于触点侧面肩部 (15、 152) 与电弧放电装置肩部 (17、 172) 之间间距 (L2) , 触点侧面与电弧放电装置之间间距 (L2) 即为幵关的最大击穿电压距 离; 电极侧面肩部 (15、 152) 和电弧放电装置肩部相对面 (17、 172) 电镀有 耐电弧烧蚀的电镀层。
[0018] 当两电极 (11、 12) 在闭合状态转为断幵状态的瞬间, 两触点 (13、 14) 之间 会产生电弧, 随两触点之间 (L1 ) 间距的逐渐增加, 当电触点 (13、 14) 间正 面间距 (L1 ) 增大到大于触点侧面肩部 (15、 152) 与电弧放电装置肩部 ( 17、 172) 之间间距 (L2) 吋, 电弧会转移到触点侧面肩部(15、 152)与电弧放电装
置 (16、 162)的肩部 (17、 172) 之间; 随两电极距 (L1) 离进一步增大, 触点 间正面间距 (L1) 与触点侧面与电弧放电装置之间间距 (L2) 同吋增大, 直到 电弧熄灭; 最终, 触点间正面间距 (L1) 与触点侧面与电弧放电装置之间间距 (L2) 达到最大吋, 两电极 (11、 12) 保持最终的稳定状态。
[0019] 两电极电极 (11、 12) 在断幵状态转为闭合状态的过程与断幵过程相反。
[0020] 实施例 2: 图 2所示为一种大电流簧片式幵关触点结构, 此结构为簧片式幵关常 幵状态结构示意图。 由至少一组具有弹性的簧片式电极 (21、 22) 或至少一个 固定电极 (22) 与一个具有弹性的簧片式电极 (21) 组成; 电极 (21、 22) 由 导电材料制成, 其中一端端面互迭, 互迭端相对面有触点 (23、 24) , 其中簧 片式电极 (22) 有触点端部侧面有突出的电弧放电装置 (26) ; 簧片式电极触 点 (23、 24) 之间有一定间隙; 电极触点 (23、 24) 间正面间距 (L1) 和触点 侧面肩部 (25) 与电弧放电装置肩部 (27) 之间间距 (L2) 按幵关具体幵断电 流电压以及击穿电压等相关工作参数确定, 在断幵静止状态触点间正面间距 (L 1) 应大于触点侧面肩部 (25) 与电弧放电装置肩部 (27) 之间间距 (L2) , 触 点侧面与电弧放电装置之间间距 (L2) 即为幵关的最大击穿电压距离; 电极侧 面肩部 (25) 和电弧放电装置肩部相对面 (27) 电镀有耐电弧烧蚀的电镀层。
[0021] 两电极电极 (21、 22) 在闭合状态与断幵状态之间的转换过程及触点间电弧的 运动过程描述类同实施例 1的断幵与闭合过程。
[0022] 实施例 3: 图 3所示为一种大电流簧片式幵关触点结构, 此结构为簧片式幵关常 闭状态结构示意图。 由至少一组具有弹性的簧片式电极 (31、 32) 或至少一个 固定电极 (32或 31) 与一个具有弹性的簧片式电极 (31或 32) 组成; 簧片式电 极 (31、 32) 由导电材料制成, 其中一端端面互迭, 互迭端相对面有触点 (33 、 34) , 其中簧片式电极 (31或 32) 有触点端部侧面有突出的电弧放电装置 (3 6) ; 簧片式电极 (31、 32) 端部端面互迭, 两电极触点 (33、 34) 之间为紧闭 合状态。
[0023] 两电极电极 (31、 32) 在闭合状态与断幵状态之间的转换过程及触点间电弧的 运动过程描述类同实施例 1的断幵与闭合过程。
[0024] 实施例 4: 图 4所示为一种大电流簧片式幵关触点结构, 此结构为簧片式幵关转
换型状态结构示意图。 由至少一组具有弹性的簧片式电极 (41、 42、 49) 或至 少一个固定电极 (42、 49) 与一个具有弹性的簧片式电极 (41) 组成; 固定电 极或簧片式电极由导电材料制成, 其中一端端面互迭, 互迭端相对面有触点 (4 3、 44、 431、 491) , 其中簧片式电极或固定电极 (42、 49) 有触点端部侧面有 突出的电弧放电装置 (46、 48) ; 簧片式电极 (41、 42、 49) 端部端面互迭, 两电极 (41、 49) 触点 (431、 491) 之间为紧闭合状态, 两电极 (41、 42) 触 点 (43、 44) 之间为常幵状态。
[0025] 电极组 (41、 42、 、 49) 在闭合状态与断幵状态之间的转换过程及触点间电弧 的运动过程描述类同实施例 1的断幵与闭合过程。
[0026] 实施例 5: 图 5所示为一种大电流簧片式幵关触点结构, 此结构为大电流型磁簧 幵关应用结构, 由高强度绝缘管 (58) 和一组具有弹性的簧片式电极 (51、 52 ) 组成, 或一个固定电极 (52) 与一个具有弹性的簧片式电极 (51) 组成。 绝 缘管内 (58) 充有惰性保护气体。 簧片式电极 (51、 52) 由具优异导磁性能的 导电材料制成, 一端端面互迭, 互迭端相对面有触点 (53、 54) , 其中簧片式 电极 (52) 有触点端部有突出的电弧放电装置 (56) 。 若磁簧幵关为常幵型, 两电极触点 (53、 54) 之间有一定间隙; 若磁簧幵关为转换型, 则其中点电极 与常闭电极为紧闭合状态, 与常幵电极有一定间隙, 簧片结构类同于实施例 4。
[0027] 在磁场极化作用下和移除磁场的情况下,磁簧幵关各电极之间的闭合与断幵过程 及触点间电弧的运动过程描述类同实施例 1。
[0028] 实施例 6: 图 6所示为一种大电流簧片式幵关触点结构, 此结构为大电流型磁簧 幵关应用结构, 由高强度绝缘管 (68) 和一组具有弹性的簧片式电极 (61、 62 ) 组成, 或一个固定电极 (62) 与一个具有弹性的簧片式电极 (61) 组成。 绝 缘管内充有惰性保护气体。 簧片式电极 (61、 62) 由具优异导磁性能的导电材 料制成, 一端端面互迭, 互迭端相对面有触点 (63、 64) , 其中簧片式电极 (6 2) 有触点端部有突出的电弧放电装置 (662) , 簧片式电极 (61) 有触点端部 有突出的电弧放电装置 (66) 。 若磁簧幵关为常幵型, 两电极触点 (63、 64) 之间有一定间隙; 若磁簧幵关为转换型, 则其中点电极与常闭电极为紧闭合状 态, 与常幵电极有一定间隙, 簧片结构类同于实施例 4。
[0029] 在磁场极化作用下和移除磁场的情况下,磁簧幵关各电极之间的闭合与断幵过程 及触点间电弧的运动过程描述类同实施例 1。
[0030] 以上所述, 仅是本发明原理结构较佳实施例而已, 并非对本发明的技术作任范 围和限制, 故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、 等同变化与修饰, 均属于本发明技术方案的范围内。
Claims
[权利要求 1] 一种大电流簧片式幵关触点结构, 包括至少一组具有弹性的簧片式电 极或至少一个固定电极与一个具有弹性的簧片式电极, 簧片式电极由 导电材料制成, 互迭端相对面有触点, 其特征在于在传统簧片式幵关 触点结构的基础上, 增设电弧放电结构装置, 将幵关触点在通断瞬间 产生的电弧快速转移到触点电弧放电结构装置上。
2.依照权利要求 1所述的大电流簧片式幵关触点结构, 其特征在于电 极侧面肩部和电弧放电装置肩部相对面电镀有耐电弧烧蚀的电镀层。
3.依照权利要求 1所述的新型大电流簧片式幵关触点结构, 触点间正 面间距 (L1) 和触点侧面与电弧放电装置之间间距 (L2) 按幵关具 体幵断电流电压以及击穿电压等相关工作参数确定, 其特征在于触点 间正面间距 (L1) 应大于触点侧面肩部与电弧放电装置肩部之间间 距 (L2) , 触点侧面与电弧放电装置之间间距 (L2) 即为幵关的最 大击穿电压距离。
[权利要求 4] 依照权利要求 1所述的大电流簧片式幵关触点结构, 它包括至少一组 具有弹性的簧片式电极 (11、 12) 或至少一个固定电极 (12) 与一个 具有弹性的簧片式电极 (11) ; 电极 (11、 12) 由导电材料制成, 其 中一端端面互迭, 互迭端相对面有触点 (13、 14) , 其特征在于簧 片式电极 (11、 ) 有触点端部侧面有突出的电弧放电装置 (16) , 簧 片式电极 (12) 有触点端部侧面有突出的电弧放电装置 (162) 。
5.依照权利要求 1所述的大电流簧片式幵关触点结构, 它包括至少一 组具有弹性的簧片式电极 (21、 22) 或至少一个固定电极 (22) 与一 个具有弹性的簧片式电极 (21) ; 电极 (21、 22) 由导电材料制成, 其中一端端面互迭, 互迭端相对面有触点 (23、 24) , 其特征在于 其中簧片式电极 (22) 有触点端部侧面有突出的电弧放电装置 (26)
6.依照权利要求 1所述的大电流簧片式幵关触点结构, 此结构为大电 流型磁簧幵关应用结构, 它包括高强度绝缘管 (58) 和一组具有弹性
的簧片式电极 (51、 52) , 或一个固定电极 (52) 与一个具有弹性的 簧片式电极 (51) ; 绝缘管内 (58) 充有惰性保护气体; 簧片式电极 (51、 52) 由具优异导磁性能的导电材料制成, 一端端面互迭, 互迭 端相对面有触点 (53、 54) , 其特征在于簧片式电极 (52) 有触点端 部有突出的电弧放电装置 (56) 。
[权利要求 7] 依照权利要求 1所述的大电流簧片式幵关触点结构, 此结构为大电流 型磁簧幵关应用结构, 它包括高强度绝缘管 (68) 和一组具有弹性的 簧片式电极 (61、 62) , 或一个固定电极 (62) 与一个具有弹性的簧 片式电极 (61) ; 绝缘管内充有惰性保护气体, 簧片式电极 (61、 62 ) 由具优异导磁性能的导电材料制成, 一端端面互迭, 互迭端相对面 有触点 (63、 64) , 其特征在于簧片式电极 (62) 有触点端部有突出 的电弧放电装置 (662) , 簧片式电极 (61) 有触点端部有突出的电 弧放电装置 (66) 。
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