WO2018006770A1 - 断路器的导电回路 - Google Patents

断路器的导电回路 Download PDF

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Publication number
WO2018006770A1
WO2018006770A1 PCT/CN2017/091420 CN2017091420W WO2018006770A1 WO 2018006770 A1 WO2018006770 A1 WO 2018006770A1 CN 2017091420 W CN2017091420 W CN 2017091420W WO 2018006770 A1 WO2018006770 A1 WO 2018006770A1
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WO
WIPO (PCT)
Prior art keywords
contact
movable contact
movable
rotating shaft
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/091420
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English (en)
French (fr)
Inventor
蒋顾平
蒋志丽
顾翔
王寒
赫文楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Chint Electrics Co Ltd
Noark Electrics Shanghai Co Ltd
SEARI Electric Technology Co Ltd
Original Assignee
Zhejiang Chint Electrics Co Ltd
Noark Electrics Shanghai Co Ltd
SEARI Electric Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Chint Electrics Co Ltd, Noark Electrics Shanghai Co Ltd, SEARI Electric Technology Co Ltd filed Critical Zhejiang Chint Electrics Co Ltd
Priority to EP17823582.6A priority Critical patent/EP3483913B1/en
Priority to BR112019000286-3A priority patent/BR112019000286B1/pt
Priority to MX2019000259A priority patent/MX2019000259A/es
Publication of WO2018006770A1 publication Critical patent/WO2018006770A1/zh
Priority to CONC2019/0000053A priority patent/CO2019000053A2/es
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • 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
    • H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc

Definitions

  • This invention relates to the field of low voltage electrical appliances and, more particularly, to a conductive loop in which a plurality of contacts of a circuit breaker are cascaded.
  • the solution to improve the rated working voltage of the DC circuit breaker is to adopt an external cascade method to provide multiple breakpoints through multiple cascaded contacts to achieve comparison.
  • High working voltage
  • multiple cascaded contacts increase the product volume, making external wiring cumbersome, increasing product cost and assembly process.
  • the use of multiple contact cascades requires changes in the position of the incoming and outgoing ends, making the circuit breaker more complex with other electrical equipment.
  • the invention provides a conductive circuit of a circuit breaker, comprising: a first contact group and a second contact group.
  • the first contact set includes a first stationary contact and a first movable contact, and the first stationary contact is coupled to the incoming end.
  • the second contact set includes a second fixed contact and a second movable contact. Wherein, the first movable contact and the second movable contact are electrically connected, the second fixed contact is connected to the trip unit, and the trip unit is connected to the outlet end.
  • first contact set and the second contact set are coaxially mounted, the first movable contact and The second moving contact is mounted on the same rotating shaft.
  • the incoming end is located on a first side of the rotating shaft, and the contacts of the first stationary contact and the first moving contact are located on a first side of the rotating shaft.
  • the contacts of the second stationary contact and the second movable contact are located on a first side of the rotating shaft.
  • the outlet end is located on the second side of the rotating shaft, and the second stationary contact extends from the first side of the rotating shaft to the second side of the rotating shaft around the second moving contact, and the second fixed contact is insulated from the second moving contact.
  • the second stationary contact is bypassed from below the second moving contact with an insulating spacer between the second stationary contact and the second movable contact.
  • the invention also provides a conductive loop of a circuit breaker, comprising: a first loop and a second loop.
  • the first circuit includes a first incoming end, a first contact set, a second contact set, a first trip, and a first outgoing end.
  • the first contact set includes a first stationary contact and a first movable contact, and the first stationary contact is coupled to the first incoming end.
  • the second contact set includes a second fixed contact and a second movable contact; the first movable contact and the second movable contact are electrically connected, and the second fixed contact is connected to the first release, the first release Connect to the first outlet.
  • the second circuit includes a second incoming end, a third contact set, a second release, and a second outgoing end.
  • the third contact set includes a third fixed contact and a third movable contact, the third fixed contact is connected to the third incoming end, the third movable contact is connected to the second release, and the second release is connected Go to the second outlet.
  • first contact set, the second contact set, and the third contact set are coaxially mounted, and the first movable contact, the second movable contact, and the third movable contact are mounted on the same rotating shaft.
  • the first incoming end is located on a first side of the rotating shaft, and the contacts of the first stationary contact and the first moving contact are located on a first side of the rotating shaft.
  • the contacts of the second stationary contact and the second movable contact are located on a first side of the rotating shaft.
  • the first outlet end is located on the second side of the rotating shaft, the second stationary contact extends from the first side of the rotating shaft to the second side of the rotating shaft, and the second fixed contact is insulated from the second moving contact .
  • the second stationary contact is bypassed from below the second moving contact with an insulating spacer between the second stationary contact and the second movable contact.
  • the conductive loop of the circuit breaker of the present invention electrically connects a plurality of moving contacts, and a plurality of moving contacts are coaxially mounted, and the static contacts are connected to the outgoing ends across the movable contacts while ensuring insulation.
  • the circuit breaker has an integral structure and a small footprint, so that the incoming and outgoing ends can be distributed on both sides, which facilitates the wiring of the circuit breaker and other electrical equipment.
  • Figure 1 discloses a block diagram of a conductive loop in accordance with an embodiment of the present invention.
  • FIG. 3 discloses a block diagram of a second contact set in a conductive loop in accordance with an embodiment of the present invention.
  • FIG. 4a, 4b, and 4c illustrate schematic views of an insulating isolation structure of a second contact set in a conductive loop, in accordance with an embodiment of the present invention.
  • 5a and 5b illustrate circuit diagrams of a conductive loop in accordance with an embodiment of the present invention.
  • the invention provides a conductive circuit of a circuit breaker, comprising: a first contact group and a second contact group.
  • the first contact set includes a first stationary contact and a first movable contact, and the first stationary contact is coupled to the incoming end.
  • the second contact group includes a second fixed contact and a second movable contact. The first movable contact and the second movable contact are electrically connected, the second fixed contact is connected to the trip unit, and the trip unit is connected to the outlet end.
  • the first contact group and the second contact group are coaxially mounted, and the first movable contact and the second movable contact are mounted on the same rotating shaft.
  • the incoming end is located on a first side of the rotating shaft, and the contacts of the first stationary contact and the first moving contact are located on a first side of the rotating shaft.
  • the contacts of the second stationary contact and the second movable contact are located on a first side of the rotating shaft.
  • the outlet end is located on the second side of the rotating shaft, and the second stationary contact extends from the first side of the rotating shaft to the second side of the rotating shaft around the second moving contact, and the second fixed contact is insulated from the second moving contact.
  • Second static contact from the second movable contact Bypassing underneath, there is an insulating spacer between the second stationary contact and the second movable contact.
  • An insulating isolation member is disposed between the second moving contact and the trip unit.
  • Figure 1 discloses a block diagram of a conductive loop in accordance with an embodiment of the present invention.
  • Figure 1 discloses an arrangement when applying the conductive loop of the present invention in a circuit breaker.
  • the conductive loop of the circuit breaker includes: a first loop and a second loop.
  • the first circuit includes a first incoming end 101, a first contact set, a second contact set, a first trip 104, and a first outgoing end 105.
  • the first contact set includes a first stationary contact 121 and a first moving contact 122.
  • the first stationary contact 121 is connected to the first incoming end 101.
  • the second contact set includes a second fixed contact 131 and a second movable contact 132.
  • the first movable contact 122 and the second movable contact 132 are electrically connected.
  • the conductive connection means that the first moving contact 122 and the second moving contact 132 are electrically conducted.
  • the first moving contact 122 and the second moving contact 132 may be electrically connected by a soft connection, a hard connection, or a combination of a soft connection and a hard connection.
  • the second stationary contact 131 is coupled to the first trip unit 104, and the first trip unit 104 is coupled to the first outlet end 105.
  • the second circuit includes a second incoming end 201, a third contact set, a second release 204, and a second outgoing end 205.
  • the third contact set includes a third fixed contact 221 and a third movable contact 222, the third fixed contact 221 is connected to the third incoming end 201, and the third movable contact 222 is connected to the second release 204.
  • the second trip unit 204 is coupled to the second outlet end.
  • the first contact set, the second contact set, and the third contact set are mounted coaxially.
  • the coaxial mounting means that the first movable contact 122, the second movable contact 132, and the third movable contact 222 are mounted on the same rotating shaft.
  • the advantage of coaxial mounting is that it saves installation space and makes the structure of the contact set more compact.
  • the coaxial installation here means that the first movable contact 122, the second movable contact 132 and the third movable contact 222 share the same rotating shaft, but the first movable contact 122 and the second movable contact
  • the 132 and the third moving contact 222 are independently rotated and do not interfere with each other.
  • the first movable contact 122, the second movable contact 132, and the third movable contact 222 are independent of each other, and can be independently closed or opened as needed.
  • the first incoming end 101 is located on a first side of the shaft.
  • the first side of the shaft is the right side of the illustration and the second side of the shaft is the left side of the illustration.
  • the contacts of the first stationary contact 121 and the first moving contact 122 are located on a first side of the rotating shaft.
  • the first static contact 121 and the first movable contact 122 The contacts are silver dots.
  • the contacts of the second stationary contact 131 and the second movable contact 132 are located on a first side of the rotating shaft.
  • the contacts of the second stationary contact 131 and the second movable contact 132 are silver dots.
  • the first outlet end 105 and the first trip unit 104 are located on a second side of the shaft.
  • the second stationary contact 131 needs to bypass the second movable contact 132 (the second movable contact 132 is mounted on the rotating shaft), extending from the first side of the rotating shaft to the second side of the rotating shaft. Since the second static contact 131 bypasses the second movable contact 132, insulation isolation between the second fixed contact and the second movable contact is required to avoid direct conduction between the two.
  • the second stationary contact 131 is bypassed from below the second movable contact 132 with an insulating spacer between the second stationary contact 131 and the second movable contact 132.
  • Figures 2, 3, 4a, 4b and 4c illustrate the structure of the second contact set and the manner in which the insulation is isolated.
  • Figure 2 illustrates a block diagram of a second stationary contact in a conductive loop in accordance with an embodiment of the present invention. As shown in FIG. 2, the main body of the second static contact 131 is a concave conductive row, and the concave portion is located below the movable contact 132, so that the second static contact 131 can be from below the second movable contact 132. Bypass.
  • the first end (the left end shown in the drawing) of the second stationary contact 131 has a contact 301 which, in one embodiment, is a silver dot.
  • the first end of the second stationary contact 131 extends outward to mate with the contact of the second movable contact 132.
  • the second end of the second static contact 131 is connected to the first release 104, and the second end of the second fixed contact 131 has a hole 302.
  • the first release 104 is fixed by a fixing member such as a screw.
  • the contacts 131 are fixed and connected. The screw passes through the hole 302 and is tightened such that the first trip unit 104 is fixedly coupled to the conductive row of the second stationary contact 131.
  • FIG. 3 discloses a block diagram of a second contact set in a conductive loop in accordance with an embodiment of the present invention.
  • the second stationary contact 131 and the second movable contact 132 form a contact on the first side (the left side shown in the drawing).
  • the second stationary contact 131 is bypassed from below the second movable contact 132, and the second end of the second stationary contact 131 is connected to the first release 104.
  • FIG. 4a, 4b, and 4c illustrate schematic views of an insulating isolation structure of a second contact set in a conductive loop, in accordance with an embodiment of the present invention.
  • the insulation isolation of the second contact group includes two parts: insulation isolation between the second static contact and the second movable contact, and the second movable contact and the first release Insulation between the insulation.
  • the second stationary contact and the second moving contact are insulated from each other using a pedestal.
  • the base 401 has two slots, the first end of the second stationary contact 131 enters the interior of the base from one of the slots, and the second end of the second stationary contact 131 enters the base from the other slot
  • the inner portion of the second stationary contact 131 is left outside the base, and the partial housing 402 of the base is sandwiched between the second fixed contact 131 and the second movable contact 132.
  • Form insulation isolation Both ends of the second static contact 131 enter into the interior of the base to cooperate with the movable contact and the trip unit.
  • the housing of the base 401 itself is insulated as a spacer member from the second stationary contact and the second movable contact.
  • the second moving contact and the first trip are also insulated by the base.
  • the base 401 has a partition 403 disposed between the second movable contact 132 and the first release 104 to insulate the two.
  • the housing of the base 401 itself also acts as an isolation member to insulate the second movable contact from the first release.
  • the current path in this embodiment is indicated by a solid arrow line in Fig. 1. Since the current path of the second loop is a normal path, no labeling is performed, and the current path of the first loop is marked.
  • the current path of the first loop is as follows:
  • the current enters (marked 1) by the first incoming end, reaches the first moving contact (labeled 2) through the first stationary contact in the first contact set, and passes through the first moving contact (labeled 3) Accessing the second movable contact (labeled 4) through the conductive path between the first movable contact and the second movable contact, and reaching the second fixed contact (marked as 5) through the second movable contact
  • the contacts of the two stationary contacts pass through the concave conductive row to the second end of the second stationary contact (labeled 6), from the second end of the second stationary contact to the first release (labeled 7) , through the first trip to the first outlet end (labeled as 8), from the first outlet end (marked as 9).
  • Figures 5a and 5b illustrate circuit diagrams of a conductive loop in accordance with an embodiment of the present invention.
  • Fig. 5a is a circuit diagram of a conventional circuit breaker having a dual circuit. As shown in Figure 5a, each of the two loops requires the use of two sets of contact sets, and the two loops require a total of four sets of contact sets.
  • Figure 5b is a circuit schematic of a conductive loop in accordance with an embodiment of the present invention.
  • the conductive loop of the present invention uses only three sets of contact sets. Due to the large volume of the contact set, which is a relatively large component in the circuit breaker, the use of a set of contact sets can be significantly reduced. The overall volume of the road.
  • the width of the circuit breaker using the conductive loop of the present invention can be substantially reduced to 3/4 of the circuit breaker using the conductive loop of the transmission technology.
  • the conductive loop of the circuit breaker of the present invention electrically connects a plurality of moving contacts, and a plurality of moving contacts are coaxially mounted, and the static contacts are connected to the outgoing ends across the movable contacts while ensuring insulation.
  • the inlet end and the outlet end can be distributed on both sides, which facilitates the wiring of the circuit breaker and other electrical equipment.

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  • Train Traffic Observation, Control, And Security (AREA)

Abstract

一种断路器的导电回路，包括：第一触头组和第二触头组。第一触头组包括第一静触头（121）和第一动触头（122），第一静触头（121）连接到进线端（101）。第二触头组包括第二静触头（131）和第二动触头（132）。其中，第一动触头（122）和第二动触头（132）导电连接，第二静触头（131）连接到脱扣器（104），脱扣器（104）连接到出线端（105）。断路器的导电回路将多个动触头（122,132，222）导电连接，并且多个动触头（122,132,222）同轴安装，第二静触头（131）在确保绝缘的情况下跨越第二动触头（132）与出线端（105）连接。在使得断路器整体结构紧凑、占用空间小的前提下使得进线端和出线端能够分布于两侧，便于断路器与其他电气设备的接线。

Description

断路器的导电回路 技术领域
本发明涉及低压电器领域，更具体地说，涉及断路器的中多个触头级联的导电回路。
背景技术
随着光伏发电行业对投入成本的控制越来越严，汇流箱、逆变器设备厂商对设备的成本控制也越来越苛刻，目前市场的发展趋势是提高系统电压来降低设备造价成本，一个普遍的共识是今后光伏系统电压将从现有的DC1000V提高到DC1500V。DC1500V将成为今后光伏系统的主流额定电压。随着额定电压的提高，与光伏系统配套的开关电器，例如断路器的额定电压也需要相应的提高。具备DC1500V额定电压的光伏专用直流塑壳断路器应该是是未来光伏行业需求的主流产品。
为了实现高额定电压下的短路分断能力，一般为提高直流断路器的额定工作电压采用的解决方式是采用外部级联的方式，通过多个级联的触头来提供多断点，以实现较高的工作电压。但多个级联的触头会增大产品体积，使得外部接线繁琐，提高产品成本和装配工序。更加重要的是，采用多个触头级联的方式，需要改变进线端和出线端的位置，使得断路器与其他电气设备的配合更加复杂。
发明内容
本发明提出一种断路器的导电回路，包括：第一触头组和第二触头组。第一触头组包括第一静触头和第一动触头，第一静触头连接到进线端。第二触头组包括第二静触头和第二动触头。其中，第一动触头和第二动触头导电连接，第二静触头连接到脱扣器，脱扣器连接到出线端。
在一个实施例中，第一触头组和第二触头组同轴安装，第一动触头和 第二动触头安装在同一转轴上。
在一个实施例中，进线端位于转轴的第一侧，第一静触头和第一动触头的触点位于转轴的第一侧。第二静触头和第二动触头的触点位于转轴的第一侧。出线端位于转轴的第二侧，第二静触头绕过第二动触头从转轴的第一侧延伸至转轴的第二侧，第二静触头与第二动触头绝缘隔离。
在一个实施例中，第二静触头从第二动触头的下方绕过，在第二静触头和第二动触头之间具有绝缘隔离部件。
在一个实施例中，第二动触头和脱扣器之间具有绝缘隔离部件。
本发明还提出一种断路器的导电回路，包括：第一回路和第二回路。第一回路包括第一进线端、第一触头组、第二触头组、第一脱扣器和第一出线端。第一触头组包括第一静触头和第一动触头，第一静触头连接到第一进线端。第二触头组包括第二静触头和第二动触头；第一动触头和第二动触头导电连接，第二静触头连接到第一脱扣器，第一脱扣器连接到第一出线端。第二回路包括第二进线端、第三触头组、第二脱扣器和第二出线端。第三触头组包括第三静触头和第三动触头，第三静触头连接到第三进线端，第三动触头连接到第二脱扣器，第二脱扣器连接到第二出线端。
在一个实施例中，第一触头组、第二触头组和第三触头组同轴安装，第一动触头、第二动触头和第三动触头安装在同一转轴上。
在一个实施例中，第一进线端位于转轴的第一侧，第一静触头和第一动触头的触点位于转轴的第一侧。第二静触头和第二动触头的触点位于转轴的第一侧。第一出线端位于转轴的第二侧，第二静触头绕过第二动触头从转轴的第一侧延伸至转轴的第二侧，第二静触头与第二动触头绝缘隔离。
在一个实施例中，第二静触头从第二动触头的下方绕过，在第二静触头和第二动触头之间具有绝缘隔离部件。
在一个实施例中，第二动触头和第二脱扣器之间具有绝缘隔离部件。
本发明的断路器的导电回路将多个动触头导电连接，并且多个动触头同轴安装，静触头在确保绝缘的情况下跨越动触头与出线端连接。在使得 断路器整体结构紧凑、占用空间小的前提下使得进线端和出线端能够分布于两侧，便于断路器与其他电气设备的接线。
附图说明
本发明上述的以及其他的特征、性质和优势将通过下面结合附图和实施例的描述而变的更加明显，在附图中相同的附图标记始终表示相同的特征，其中：
图1揭示了根据本发明的一实施例的导电回路的结构图。
图2揭示了根据本发明的一实施例的导电回路中第二静触头的结构图。
图3揭示了根据本发明的一实施例的导电回路中第二触头组的结构图。
图4a、图4b和图4c揭示了根据本发明的一实施例的导电回路中第二触头组的绝缘隔离结构的示意图。
图5a和图5b揭示了根据本发明的一实施例的导电回路的电路示意图。
具体实施方式
本发明提出一种断路器的导电回路，包括：第一触头组和第二触头组。第一触头组包括第一静触头和第一动触头，第一静触头连接到进线端。第二触头组，第二触头组包括第二静触头和第二动触头。第一动触头和第二动触头导电连接，第二静触头连接到脱扣器，脱扣器连接到出线端。第一触头组和第二触头组同轴安装，第一动触头和第二动触头安装在同一转轴上。进线端位于转轴的第一侧，第一静触头和第一动触头的触点位于转轴的第一侧。第二静触头和第二动触头的触点位于转轴的第一侧。出线端位于转轴的第二侧，第二静触头绕过第二动触头从转轴的第一侧延伸至转轴的第二侧，第二静触头与第二动触头绝缘隔离。第二静触头从第二动触头 的下方绕过，在第二静触头和第二动触头之间具有绝缘隔离部件。第二动触头和脱扣器之间具有绝缘隔离部件。
图1揭示了根据本发明的一实施例的导电回路的结构图。图1揭示了在断路器中应用本发明的导电回路时的一种布置方案。如图所示，该断路器的导电回路包括：第一回路和第二回路。第一回路包括第一进线端101、第一触头组、第二触头组、第一脱扣器104和第一出线端105。第一触头组包括第一静触头121和第一动触头122。第一静触头121连接到第一进线端101。第二触头组包括第二静触头131和第二动触头132。第一动触头122和第二动触头132导电连接。此处，导电连接是指第一动触头122和第二动触头132电气导通。在不同的实施例中，第一动触头122和第二动触头132可以通过软连接、硬连接或者软连接和硬连接的组合应用来实现电气导通。第二静触头131连接到第一脱扣器104，第一脱扣器104连接到第一出线端105。第二回路包括第二进线端201、第三触头组、第二脱扣器204和第二出线端205。第三触头组包括第三静触头221和第三动触头222，第三静触头221连接到第三进线端201，第三动触头222连接到第二脱扣器204，第二脱扣器204连接到第二出线端。
继续参考图1所示，第一触头组、第二触头组和第三触头组同轴安装。具体而言，同轴安装是指第一动触头122、第二动触头132和第三动触头222安装在同一转轴上。同轴安装的优势在于能够节省安装空间，使得触头组的结构更加紧凑。需要说明的是，此处的同轴安装是指第一动触头122、第二动触头132和第三动触头222共用同一转轴，但第一动触头122、第二动触头132和第三动触头222是各自独立转动工作，并不相互干扰。在动作时，第一动触头122、第二动触头132和第三动触头222是各自独立的，能够根据需要分别独立闭合或者打开。
第一进线端101位于转轴的第一侧，在图示的实施例中，转轴的第一侧为图示的右侧，转轴的第二侧为图示的左侧。第一静触头121和第一动触头122的触点位于转轴的第一侧。第一静触头121和第一动触头122的 触点为银点。第二静触头131和第二动触头132的触点位于转轴的第一侧。第二静触头131和第二动触头132的触点为银点。第一出线端105和第一脱扣器104位于转轴的第二侧。由于第二触头组中第二静触头131和第二动触头132的触点与第二触头组最终的出线端(第二静触头的出线端)分别位于转轴的两侧，因此第二静触头131需要绕过第二动触头132(第二动触头132是安装在转轴上)，从转轴的第一侧延伸至转轴的第二侧。由于第二静触头131是绕过第二动触头132，因此需要在第二静触头与第二动触头之间进行绝缘隔离，避免两者的直接导通。
在图示的实施例中，第二静触头131从第二动触头132的下方绕过，在第二静触头131和第二动触头132之间具有绝缘隔离部件。图2、图3、图4a、图4b和图4c揭示了第二触头组的结构以及绝缘隔离的方式。首先参考图2所示，图2揭示了根据本发明的一实施例的导电回路中第二静触头的结构图。如图2所示，第二静触头131的主体是下凹的导电排，下凹的部分位于动触头132的下方，使得第二静触头131能够从第二动触头132的下方绕过。第二静触头131的第一端(图中所示的左侧端)上具有触点301，在一个实施例中，该触点301是银点。第二静触头131的第一端向外延伸以与第二动触头132的触点配合。第二静触头131的第二端与第一脱扣器104连接，第二静触头131的第二端上具有孔302，第一脱扣器104通过诸如螺钉的固定件与第二静触头131固定并连接。螺钉穿过孔302并拧紧，使得第一脱扣器104固定连接在第二静触头131的导电排上。图3揭示了根据本发明的一实施例的导电回路中第二触头组的结构图。第二静触头131和第二动触头132在第一侧(图中所示的左侧)形成触点。第二静触头131从第二动触头132的下方绕过，第二静触头131的第二端与第一脱扣器104连接。
图4a、图4b和图4c揭示了根据本发明的一实施例的导电回路中第二触头组的绝缘隔离结构的示意图。第二触头组的绝缘隔离包括两个部分：第二静触头和第二动触头之间的绝缘隔离，以及第二动触头和第一脱扣器 之间的绝缘隔离。在一个实施例中，第二静触头和第二动触头利用基座进行绝缘隔离。基座401上开有两个槽，第二静触头131的第一端从其中一个槽中进入基座的内部，第二静触头131的第二端从其中另一个槽中进入基座的内部，而第二静触头131的导电排的下凹部分则留在基座的外部，基座的部分壳体402夹在第二静触头131和第二动触头132之间，形成绝缘隔离。第二静触头131的两端进入到基座内部与动触头以及脱扣器配合。在该实施例中，基座401的壳体自身作为隔离部件对第二静触头与第二动触头进行绝缘隔离。在一个实施例中，第二动触头和第一脱扣器也利用基座进行绝缘隔离。基座401上具有隔板403，隔板403设置在第二动触头132和第一脱扣器104之间，将两者绝缘隔离。在该实施例中，基座401的壳体自身也作为隔离部件对第二动触头和第一脱扣器进行绝缘隔离。
回到图1，图1中用实体箭头线表示了该实施例中的电流路径。由于第二回路的电流路径为常规路径，因此没有进行标注，进行标注的是第一回路的电流路径。第一回路的电流路径如下：
电流由第一进线端进入(标记为1)、通过第一触头组中的第一静触头到达第一动触头(标记为2)、通过第一动触头(标记为3)、通过第一动触头和第二动触头之间的导电通路到达第二动触头(标记为4)、通过第二动触头到达第二静触头(标记为5)、从第二静触头的触点经过下凹的导电排到达第二静触头的第二端(标记为6)、从第二静触头的第二端到达第一脱扣器(标记为7)、通过第一脱扣器到达第一出线端(标记为8)、从第一出线端流出(标记为9)。
参考图5a和图5b，图5a和图5b揭示了根据本发明的一实施例的导电回路的电路示意图。图5a是传统技术中具有双回路的断路器的电路示意图。如图5a所示，两个回路中的每一个回路需要使用两组触头组，两个回路总计需要使用四组触头组。图5b是根据本发明的一实施例的导电回路的电路示意图。本发明的导电回路仅使用三组触头组。由于触头组的体积较大，是断路器中体积较大的部件，因此少使用一组触头组可以显著缩小断 路器的整体体积。使用本发明的导电回路的断路器的宽度大致能够缩小至使用传动技术的导电回路的断路器的3/4。
本发明的断路器的导电回路将多个动触头导电连接，并且多个动触头同轴安装，静触头在确保绝缘的情况下跨越动触头与出线端连接。在使得断路器整体结构紧凑、占用空间小的前提下使得进线端和出线端能够分布于两侧，便于断路器与其他电气设备的接线。
上述实施例是提供给熟悉本领域内的人员来实现或使用本发明的，熟悉本领域的人员可在不脱离本发明的发明思想的情况下，对上述实施例做出种种修改或变化，因而本发明的保护范围并不被上述实施例所限，而应该是符合权利要求书提到的创新性特征的最大范围。

Claims (10)

  1. 一种断路器的导电回路，其特征在于，包括：
    第一触头组，第一触头组包括第一静触头和第一动触头，第一静触头连接到进线端；
    第二触头组，第二触头组包括第二静触头和第二动触头；其中，
    第一动触头和第二动触头导电连接，第二静触头连接到脱扣器，脱扣器连接到出线端。
  2. 如权利要求1所述的断路器的导电回路，其特征在于，所述第一触头组和第二触头组同轴安装，第一动触头和第二动触头安装在同一转轴上。
  3. 如权利要求2所述的断路器的导电回路，其特征在于，
    进线端位于转轴的第一侧，第一静触头和第一动触头的触点位于转轴的第一侧；
    第二静触头和第二动触头的触点位于转轴的第一侧；
    出线端位于转轴的第二侧，第二静触头绕过第二动触头从转轴的第一侧延伸至转轴的第二侧，第二静触头与第二动触头绝缘隔离。
  4. 如权利要求3所述的断路器的导电回路，其特征在于，所述第二静触头从第二动触头的下方绕过，在第二静触头和第二动触头之间具有绝缘隔离部件。
  5. 如权利要求3所述的断路器的导电回路，其特征在于，所述第二动触头和脱扣器之间具有绝缘隔离部件。
  6. 一种断路器的导电回路，其特征在于，包括：
    第一回路，包括第一进线端、第一触头组、第二触头组、第一脱扣器和第一出线端，
    第一触头组包括第一静触头和第一动触头，第一静触头连接到第一进线端；
    第二触头组包括第二静触头和第二动触头；第一动触头和第二动触头导电连接，第二静触头连接到第一脱扣器，第一脱扣器连接到第一出线端；
    第二回路，包括第二进线端、第三触头组、第二脱扣器和第二出线端，
    第三触头组包括第三静触头和第三动触头，第三静触头连接到第三进线端，第三动触头连接到第二脱扣器，第二脱扣器连接到第二出线端。
  7. 如权利要求6所述的断路器的导电回路，其特征在于，所述第一触头组、第二触头组和第三触头组同轴安装，第一动触头、第二动触头和第三动触头安装在同一转轴上。
  8. 如权利要求7所述的断路器的导电回路，其特征在于，
    第一进线端位于转轴的第一侧，第一静触头和第一动触头的触点位于转轴的第一侧；
    第二静触头和第二动触头的触点位于转轴的第一侧；
    第一出线端位于转轴的第二侧，第二静触头绕过第二动触头从转轴的第一侧延伸至转轴的第二侧，第二静触头与第二动触头绝缘隔离。
  9. 如权利要求8所述的断路器的导电回路，其特征在于，所述第二静触头从第二动触头的下方绕过，在第二静触头和第二动触头之间具有绝缘隔离部件。
  10. 如权利要求8所述的断路器的导电回路，其特征在于，所述第二动触头和第二脱扣器之间具有绝缘隔离部件。
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