WO2018001386A1 - 一种便于识别接线准确的接线端子 - Google Patents

一种便于识别接线准确的接线端子 Download PDF

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Publication number
WO2018001386A1
WO2018001386A1 PCT/CN2017/091578 CN2017091578W WO2018001386A1 WO 2018001386 A1 WO2018001386 A1 WO 2018001386A1 CN 2017091578 W CN2017091578 W CN 2017091578W WO 2018001386 A1 WO2018001386 A1 WO 2018001386A1
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WO
WIPO (PCT)
Prior art keywords
terminal
color
wiring
plug
fire
Prior art date
Application number
PCT/CN2017/091578
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English (en)
French (fr)
Inventor
王水平
Original Assignee
西安蓝钻电子科技有限公司
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.)
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Publication date
Application filed by 西安蓝钻电子科技有限公司 filed Critical 西安蓝钻电子科技有限公司
Priority to EP17819382.7A priority Critical patent/EP3477786A4/en
Priority to US16/314,498 priority patent/US20190318845A1/en
Publication of WO2018001386A1 publication Critical patent/WO2018001386A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
    • H01B7/368—Insulated conductors or cables characterised by their form with distinguishing or length marks being a sleeve, ferrule, tag, clip, label or short length strip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/465—Identification means, e.g. labels, tags, markings

Definitions

  • the present invention relates to a terminal for facilitating the identification of an accurate wiring.
  • the present invention provides a clear color frame identification, color block, ribbon, wire pattern, number, direction arrow, Color guide lines or national text marks and bumps to improve wiring Accurate terminals.
  • the technical solution of the present invention is: a terminal for facilitating identification of an accurate wiring, comprising a housing and a plurality of terminals, the terminals being extended from the inside of the housing, the special being that: the housing is provided with a plurality of The identification area; the identification area has a one-to-one correspondence with the terminal.
  • the marking zone is a planar marking, projection, groove or integral multi-color injection molding on the outer or inner surface of the outer casing.
  • the above identified area is a combination of one or more of color patches, ribbons, directional arrows, wire patterns, numbers, and characters.
  • the color block is a color block that is round, circular, square or square around the terminal.
  • the ribbon is a guide line that is connected to one end of the terminal.
  • the above terminals are sockets, plugs, knife switches, air switches, circuit breakers, electric meters, motors, connecting terminals, generators, or terminals on transformers.
  • the above directional arrows are provided on the terminal itself or on the surface of the power cord or housing.
  • the number of the above-mentioned directional arrows is plural, reflecting the relationship between the entry and exit.
  • the protrusion or the groove is one or more, and the shape of the protrusion or the groove is a circle or a square.
  • the invention has the beneficial effects that the invention is easy to identify on the terminals of various circuit connecting devices such as sockets, plugs, knife switches, air switches, circuit breakers, electric meters, motors, transformers, power lines, generators or transformers.
  • the identification area and the identification area corresponding to different terminals are set to different colors and sorting.
  • the characters of each country can facilitate the technicians or ordinary users to accurately distinguish and identify different terminals such as live line, neutral line and grounding, and the color marked areas are different.
  • the color power line can achieve the uniformity of color and phase sequence. It can be easily and accurately returned after accidental disconnection, and ordinary people can connect correctly.
  • the color-coded terminal blocks provided by the present invention are applied to sockets, plugs, plugs, etc., which are easy to identify, improve the accuracy of accurate wiring, and set two-phase plugs.
  • the motor of this embodiment can be rotated at any load end to achieve clockwise rotation, that is, It is the same as the generator steering, and avoids the problem that the existing AC three-phase A ⁇ B ⁇ C is equal to the AC three-phase B ⁇ C ⁇ A and the AC three-phase C ⁇ B ⁇ A, that is, the steering is consistent and the lines are crossed, and the color identification area is passed. It is easy to realize the single-phase parallel or multi-layer multi-layer connection of AC three-phase A ⁇ B ⁇ C, and the fault repairing circuit is accurate, which is especially suitable for the frequent transfer of buried cables.
  • the above improvements are applied to the terminals of electrical equipment such as knife switches, air switches, circuit breakers, electric meters, AC contactors, fiber optic connectors, etc., while limiting the color of the wiring at the terminal and the terminal, and then limiting the color and direction of the power cord. It plays a role of connecting the upper and lower. Even if the wiring of the ordinary user refers to the color and the direction arrow, the professional wiring level can be achieved. Knowing the power direction, the existing products can be standardized, and can be widely applied to the power control cabinet, the switch cabinet, the instrument box, In switches and other devices, the advantages are clear relationship between power supply and signal input and exit, eliminating wiring errors, installation specifications, common users can also operate, and security is greatly enhanced, especially suitable for battlefield chaos.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural view of Embodiment 2 of the present invention.
  • FIG. 3 is a front elevational view showing a third embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the internal structure of Embodiment 4 of the present invention.
  • Figure 5 is a schematic structural view of Embodiment 5 of the present invention.
  • Embodiment 6 is a schematic structural view of Embodiment 6 of the present invention.
  • Figure 7 is a schematic structural view of Embodiment 7 of the present invention.
  • Figure 8 is a schematic structural view of Embodiment 8 of the present invention.
  • Figure 9 is a schematic structural view of Embodiment 9 of the present invention.
  • Figure 10 is a schematic structural view of Embodiment 10 of the present invention.
  • Figure 11 is a schematic structural view of Embodiment 11 of the present invention.
  • FIG. 12 is a schematic structural view of a double core sheathed wire used in conjunction with the present invention.
  • the terminal of the invention can be applied to the front or back wiring part of the AC charging plug socket of the new national standard electric vehicle, and is also applicable to the British standard, American standard, European standard, South African standard or other national military, civil, industrial, aviation plugs and sockets, etc. , including square, round two-hole, three-hole, four-hole, five-hole and seven-hole, nine-hole electric car plug and socket and porous plug and socket, that is, two-phase plug and socket square round (fire line zero line), two-phase with ground Line plug socket square round (fire line zero line ground wire), three-phase ground wire plug socket square round (fire 1, fire 2, fire 3, ground wire), civil or industrial five-hole plug socket square round (fire 1, fire 2, fire 3, zero line ground) and other combinations.
  • this embodiment is a new national standard electric vehicle AC charging plug, and the terminals are seven copper plug sockets 11 , and a circular color block of different colors is arranged around each copper plug socket 11 . 12.
  • the Chinese and English characters 13 of the same color are set beside the color block 12. Among them, “Fire L1" and corresponding color blocks are yellow, “Fire L2” and corresponding color blocks are green, “Fire L3” and corresponding color blocks are red, "N zero” and corresponding color blocks are blue (light blue)
  • the "charge CC" and the corresponding color block are white, the "control CP” and the corresponding color block are yellow, and the "ground” and the corresponding color block are yellow-green two-color.
  • the new color labeling also includes a plastic column (empty core) surrounding the tail part of the plug socket, adding color to the exterior or interior of the plastic column.
  • the purpose of adding color is not only eye-catching, easy to recognize, but also the color of the connecting wire sheath.
  • the color is printed or inkjet, which is eye-catching and long-lasting.
  • the added color can reflect the polarity of the upper and lower corresponding plugs and sockets, that is, the live wire, the neutral wire, the ground wire, etc.
  • the terminal of the invention can be applied to the front or back wiring part of the nine-hole DC charging plug socket of the new national standard electric vehicle, and is also applicable to the military, civil, industrial, aviation of the British standard, the American standard, the European standard, the South African standard or other countries.
  • Plug and socket, wiring methods include crimping, welding, screw fixing cable, including square, round two-hole, three-hole, four-hole, five-hole and seven-hole, nine-hole electric car plug and other multi-position plug and socket, such as Taixing City Airline Military Aviation Plug Co., Ltd.
  • Y2 series Y50 series, XC, Y27 series, YMG series, Y17 series, Y11, YP series, Y50X series, Y50EX, Y50DX series, XCA series, CXCH, XCM series, XCG series, XCE Series, XCF series, XCD, YGD series, JY series, J7 series, J14 series, YF1 series, YF6 series, etc.
  • the present embodiment is a nine-hole DC charging plug of a new national standard electric vehicle, and the terminals are nine copper plug sockets 21, and a circle of different colors is arranged around each copper plug socket 21.
  • the color block 22 is provided with a Chinese and English character 23 of the same color as the color block 22. Among them, “S+” and corresponding color blocks are yellow, “CC2" and corresponding color blocks are green, “CC1" and corresponding color blocks are red, "DC-", “A-” and corresponding color blocks are blue (shallow Blue), “S-” and corresponding color blocks are black, “DC+", “A+” and corresponding color blocks are brown, and "ground” and corresponding color blocks are yellow-green two-color.
  • the new color labeling also includes a plastic column (empty core) surrounding the tail part of the plug socket, adding color to the exterior or interior of the plastic column.
  • the purpose of adding color is not only eye-catching, easy to recognize, but also the color of the connecting wire sheath.
  • yellow corresponds to the yellow outer skin color wire
  • green corresponds to the green outer skin color wire
  • red corresponds to the red outer skin color wire
  • blue (light blue) corresponds to the blue (light blue) outer skin color wire
  • yellow-green two-color corresponds to yellow-green two-color outer skin color Wire
  • black corresponds to black skin color wire
  • brown corresponds to brown skin color wire
  • the color of the tail of the plug sleeve defines the color of the wire and the color of the plug sleeve, and the invention plays a role of connecting the upper and lower sides, so that the two cables are accurately connected through the plug and socket, that is, the color is color.
  • the color is printed or inkjet, which is eye-catching and long-lasting. Applicable to different plugs and sockets in different countries, but the color should meet the different requirements of different countries.
  • the embodiment is a front panel structure of a casing applied to a national standard three-phase socket, and the socket manufacturer includes a bull, a Schneider, a TCL, a Siemens, and the like.
  • the terminals are four socket jacks 31, and a square color block 32 of different colors is arranged around each socket jack 31, and the same color and color are set beside the color block 32. Character 33.
  • L Fire 1 and corresponding color blocks are yellow
  • L Fire 2 and corresponding color blocks are green
  • L Fire 3 and corresponding color blocks are red
  • “Land” and corresponding color blocks are yellow and green
  • Another application of the plug and socket is to change the grounding to N zero, which is mostly applied to the generator (no need for a grounding wire environment).
  • the first reaction is red, yellow, green corresponding to the fire line, yellow and green two colors corresponding to the ground line and corresponding to the polarity of the inner insert sleeve of the outer casing, etc., also applicable to square, circular single phase Single-phase with ground wire, three-phase plug socket and modular socket, etc.
  • the color adopts printing or inkjet printing technology, which is eye-catching, alert and strong, and long-lasting.
  • the added color can reflect the polarity of the upper and lower corresponding plugs and sockets, that is, the fire line, the neutral line, the ground line, and the like.
  • this embodiment is applied to the national standard two-phase grounding square detachable plug, including 10a, 16a and other specifications plugs, manufacturers include Bull, Schneider, TCL, Siemens, etc., also applicable to single-phase, single-phase Internal wiring with grounding wire, three-phase plug, power supply box, timer, thermostat, electronic instrument, socket, socket, switch, lamp holder, etc. It can also be used in air conditioners, washing machines, microwave ovens, modular sockets, etc. Electrical equipment, etc., wiring methods are crimping, welding, screw fixing cable.
  • the terminal of the embodiment is three copper plugs 41, and each of the copper plugs 41 is provided with a strip of color strip 42 of different colors (ie, a power line guide line pattern), and the ribbon is also provided with the same color.
  • the ribbon 42 can guide people to accurately wire, and at the same time limit the color of the power cord, further standardize wiring and unification, to meet the general population operation, and reduce errors. Among them, "fire”, “L” and corresponding color bands are red, “zero”, “N” and corresponding color bands are blue (light blue), and "ground” and corresponding color bands are yellow-green two-color.
  • the color is printed or inkjet, which is eye-catching and long-lasting.
  • the single-phase fire line color in the marking area refers to the color and usage habits of three-phase fire lines in various countries. It is customary to use red in China. (Three-phase fire line color 1 yellow, 2 green 3 red)
  • the added color can reflect the polarity of the upper and lower plugs and sockets, that is, the fire line, the neutral line, the ground line, etc., and the color difference is obvious after the wrong connection, and it is easy to find misoperation.
  • the embodiment is applied to a mobile phone charger, and further includes an electrical device having a fuse and a leakage of a metal connecting component, such as a television, a hair dryer, an electric drill, a DVD player, a charger, a power supply box, and the like.
  • a metal connecting component such as a television, a hair dryer, an electric drill, a DVD player, a charger, a power supply box, and the like.
  • the terminal of this embodiment is a two-phase plug 51.
  • the marking areas provided on the six faces of the peripheral surface of the casing include a dot-like projection 52, a strip-shaped ribbon 53, a Chinese-English character 54 and a circular color block 55.
  • the "L fire”, the ribbon connected to the “L fire” and the color blocks above the “L fire” are red, the "N zero", the ribbon connected to the "N zero” and the “N zero”
  • the upper color blocks are all blue (light blue). In this way, when the charger is ready to be charged, the upper and lower sides of the text mark can be recognized.
  • the electrode When the text is inserted into the wall socket, the electrode can be correspondingly connected.
  • the fire line corresponds to the contact circuit of the fuse, and people can also pass the point.
  • Shaped protrusions 52 feeling up and down, no visual observation, poor light can also recognize the upper and lower, multiple insertion formation habits, can be accurately inserted into the wall panel socket without looking at the eyes, the purpose of setting the ribbon and color block is to correspond to the color of the socket Accurate insertion, popularize the basic common sense of the left zero line of the right fire line, and at the same time make the product more beautiful, the most important is to improve the safety factor, also set in the back of the shell, single phase, single phase with ground wire, three-phase plug, etc.
  • the color block further shows the polarity of the plug socket and the phase sequence arrangement, which is convenient for people to observe and recognize from the back, especially for the plug bracket assembly wiring.
  • the color is printed or inkjet, which is eye-catching and long-lasting. It is suitable for different countries. Plug and socket, but the color should meet the different requirements of different countries.
  • the single-phase fire line color in the marking area refers to the national three-phase fire line color.
  • the embodiment is applied to a three-phase electric meter binding post.
  • the manufacturer includes Cixi Zhouxiang Dengfa Hardware Fittings Factory, Cixi Zhouxiang Jianxi Hardware Fittings Factory, Yueqing Jianrong Electric Meter Fittings Factory, etc. It can also be applied to two-phase electric meter binding posts, various screw-type binding posts, wire connectors, lamp caps, fuses, bakelite knives, inverters, panel switches, inverters, industrial connectors and other electrical equipment.
  • the terminal of the embodiment is a three-phase electric meter terminal 61.
  • the outer surface of the terminal 61 is provided with different color identification areas, and the identification area includes a circular color block 62 on the surface of the wiring hole and a square color at the fastening screw.
  • Block 63, corresponding Chinese and English characters 64 and directional arrows 65 are effectively labeled and color-ordered, and the order of the order is yellow, green, red, blue (light blue) from left to right, and is increased.
  • Chinese and English characters and directional arrows with color the color is printed or inkjet, etc., which is eye-catching and long-lasting.
  • Chinese digital control and control 2 are added in the lamp head and wall panel switch. Applicable to different plugs and sockets in different countries, but the color should meet the different requirements of different countries.
  • the color and direction of the input and output connection power cords are limited, that is, yellow corresponds to the yellow outer skin color wire, green corresponds to the green outer skin color wire, and red corresponds to the red outer skin color wire.
  • the blue (light blue) corresponds to the blue (light blue) outer skin color wire.
  • the present invention provides a striking colored directional arrow in the power cable connection hole to clearly show the power input and output relationship, that is, the power supply (power supply line) ⁇ the electric meter Incoming hole ⁇ electric meter outlet hole ⁇ circuit breaker ⁇ load, further standardize wiring and unification, to meet the general population operation, reduce errors, when the user connects the meter, it will consciously correspond to the color, follow the direction arrow prompt, accurately wire, and the color difference after the wrong connection Obviously, further reduce the misoperation, further improve the quality of the power box, and be more user-friendly.
  • the invention can be applied to a circuit board plug-in connection terminal, and the products include a splicable screw type PCB terminal block, a plug-in type PCB terminal block, etc., and the manufacturer includes Cixi Kefa Electronics Co., Ltd., Cixi Lianzhe Electronics Co., Ltd., etc. It can be widely used in power conversion circuits, communication signals, etc. It also includes plug-in wiring connection terminals, multi-position connectors, terminal blocks, connection line terminals, etc.
  • the products include electrical power supply main board, inverter, and phase. Xu relay, thermostat electronic instrument, etc. At the terminal
  • the terminal of the embodiment includes eight terminals 71, which are three live terminals, a neutral terminal, a ground terminal, a +12V terminal, a +5V terminal and a negative pole from left to right. Terminals.
  • the identification area may specifically include a color block 72 and a Chinese-English character 73 corresponding thereto.
  • the color of the color block corresponding to "L1 fire” is yellow
  • the color of the color block corresponding to "L2 fire” is green
  • the color of the color block corresponding to "L3 fire” is red
  • the color of the color block corresponding to "N zero” is blue (shallow Blue)
  • the color of the color block corresponding to "ground” is yellow-green color
  • the color of the color block corresponding to "+12” is dark brown
  • the color of the color block corresponding to "+5" is brown
  • the color of color corresponding to "-” is blue.
  • Color (light blue) that is, the color varies with the depth of the AC DC voltage. The color should meet the different requirements of different countries. After the wrong connection, the color difference is obvious, and it is easy to find the wrong operation.
  • the color selection of the weak electric signal part should avoid the strong electric color setting.
  • the present embodiment is a plug-in type circuit board plug-in connector, such as a household electrical appliance, a computer, a motorcycle, an automobile, and the like, which are manufactured by Zhejiang Hongxing Electric Co., Ltd., and a terminal harness electrical connector and a terminal, including a male and female rubber. Shell and male and female terminals are widely used in power conversion circuits, communication signals, computer power supplies, wiring harnesses and other circuits.
  • the terminal of the embodiment includes four terminals 81.
  • the order of the order is yellow, green, red, blue (light blue) from left to right
  • the yellow power line corresponds to the yellow power line
  • the green mark corresponds to the green power line
  • the red mark corresponds to the red power line
  • the identification area corresponds to the blue (light blue) power cord.
  • the operator can easily find the wiring error and the product is more beautiful.
  • the color block can also be a single color or a combination of colors.
  • the invention can be applied to molded case circuit breakers, and the manufacturers include Chint, Hongbo, Shanghai People's Electric, Schneider, ABB, etc., and also include air switches, circuit breakers, earth leakage circuit breakers, leakage protectors, AC contactors, and analog sockets. , surge protector, dual power transfer switch, disconnector, etc.
  • the circuit breaker of this embodiment is provided with four terminals 91, which are three live terminals and one neutral terminal from left to right.
  • a ring color patch 92 of different colors and a corresponding Chinese and English character 93 are disposed beside each terminal. It is effectively identified and color-ordered.
  • the four color blocks from left to right are yellow, green, red, blue (light blue), and new Chinese and English characters and directional arrows with color are added.
  • L1 fire is yellow, corresponding to the yellow arrow and the yellow surrounding the terminal;
  • L2 fire is green, corresponding to the green arrow and the green surrounding the terminal;
  • L3 fire is red, Corresponds to the red arrow and the red-colored binding posts;
  • N-zero is blue (light blue), corresponding to the blue (light blue) arrow and the surrounding blue (light blue) binding posts.
  • the invention can be applied to a drawbar and a lever type open knife switch.
  • the manufacturers include Shanghai People's Electric, Shanghai Bangkai Electric Co., Ltd., Zhejiang Gubo Power Technology Co., Ltd., Shanghai Jingfeng Electric Co., Ltd., etc., and also include a reverse switch. , high-voltage load switch, vacuum switch, oil switch, bakelite knife, two-way knife switch.
  • the terminal of the embodiment includes three static blade terminals 101 and three movable blade terminals 102.
  • the traditional blade switches are provided with identification areas corresponding to different colors, specifically including color blocks 103 and Chinese and English characters 104, direction arrows 105, for effective identification and color sorting.
  • the order of the color blocks is yellow, green, and red from left to right.
  • “A fire” corresponds to the yellow color block and the direction arrow
  • “B fire” corresponds to the green color block and the direction arrow
  • “C fire” corresponds to the red color block and the direction arrow.
  • the direction arrow, the number, the Chinese and English characters are used to give a warning, and the numerical size represents the order of the phase sequence.
  • the color difference is obvious, and it is easy to find the wrong operation, reminding the operator to correct.
  • the invention can be applied to a motor terminal, and the manufacturer includes Shaoyang Beita Motor Parts Co., Ltd., Yueqing Shoulong Electric Co., Ltd., Wenling Yinwei Electromechanical Parts Factory, and the like.
  • the terminals of the present embodiment are three sets of copper joints 111, and color blocks 112 of corresponding colors and Chinese and English characters 113 are disposed around each of the copper joints.
  • the color blocks of four different colors have a one-to-one correspondence with Chinese and English characters.
  • “L1 fire”, "U1" and “U2” correspond to yellow color blocks
  • “L2 fire", "V1" and “V2” correspond to green color.
  • Blocks, "L3 fire”, "W1” and “W2” correspond to red color blocks
  • "N zero” corresponds to blue (light blue) color blocks
  • numbers represent the order of phase sequence.
  • the sheath wire is used in conjunction with the electric meter, AC contactor, connecting terminal, circuit breaker, analog socket, knife switch, etc. of the present invention, and the power control box is composed, and the internal structure is clear at a glance. Reasonable and humane.
  • the terminal provided by the invention is provided with color, letter and Chinese character mark from the power station, such as A-yellow-fire line, B-green-fire line, C-red-fire line, N-light blue (light blue)-zero line, Two-color (yellow-green)-grounding, the connection terminals of the supporting booster station-substation-switching station-low-voltage transformer are also set accordingly.
  • the specific settings are as follows:
  • the terminal is set to A-yellow-hot, B-green-hot, C-red-hot. (horizontal from left to right, vertical from top to bottom).
  • step-up transformer and the switch are also A-yellow-hot, B-green-hot, C-red-hot. (horizontal from left to right, vertical from top to bottom), the output inputs correspond in parallel.
  • User low voltage transformer input is A-yellow-fire line, B-green-fire line, C-red-fire line, output A-yellow-fire line, B-green-fire line, C-red-fire line, N-light blue (light blue) - zero line (horizontal from left to right, vertical from top to bottom).
  • the components of the user's meter box circuit breaker, air-opening, electric meter, etc. are A-yellow-firewire, B-green-firewire, C-red-firewire, N-light blue (light blue)-zero line ( Horizontal from left to right, vertical from top to bottom).

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Abstract

一种便于识别接线准确的接线端子，包括外壳和多个接线端（71，81，91，101，102），所述接线端（71，81，91，101，102）由外壳内部伸出，所述外壳上设置有多个标识区（82）；所述标识区（82）与接线端（81）为一一对应的关系。该接线端子在插座、插头、刀开关、空气开关、断路器、电表、电动机、变压器，电源线、发电机或者变压器等各类电路连接设备的接线端子上设置容易识别的标识区，与不同接线端对应的标识区设置不同的颜色和排序，各国字符能方便技术人员或者普通用户对火线、零线、接地等不同接线端进行准确区分识别，带颜色的标识区对应不同颜色的电源线，可以做到颜色、相序的统一，在意外断线后也可以很容易地准确接回，普通人员也能正确连接。不仅提高了接线安全性而且也增加了接线便捷性，大大提高了技术人员或者普通用户进行接线的效率。

Description

一种便于识别接线准确的接线端子 技术领域
本发明涉及一种便于识别接线准确的接线端子。
背景技术
随着社会工业化水平和人们经济收入水平的提高，越来越多的各种类型的家用电器出现在人们的日常生活中，还包括各种电器设备，例如控制柜、开关柜、交换机、仪表箱，电脑、电视、空调、冰箱、洗衣机、电动汽车等等。这些电器设备内部强电部分通常使用带有两相或者三相电源线进行电源输入，而我国的两相插头插座存在上下左右不分的缺点。为了保证电压输入的稳定和出于用电安全的考虑，对于一些大功率用电设备更是需要使用带有四孔插头甚至五孔带地线插头的电源线，虽然用专业性强的英文首字母或符号给予标识，对于普通人员在接线时容易出错或不知到怎样正确接线，易出现接线错误状况。另外从发电站到升压站、变电站、开关站、低压变压器再到用户终端的电器设备，整个电路传输过程中需要使用大量的接线端子、转换开关、熔断器、避雷器等进行电路转接，易出现接线错误状况。在发电、用电或者电路转接过程中都要对传输线路的火线、零线、地线以及相序排列加以区分，然而目前市场上正在销售以及正在使用的各种类型的发电设备、变压设备或者用电设备的接线端子都没有对其进行有效的标识、显示进出关系和颜色排序。对于不熟悉相关规定的技术人员以及普通用户而言，极容易出现接入火线、零线、地线的交叉或者相序排列的混乱，一般用户也无法准确识别火线、零线及位置排序。而对于弱电多位连接端子，如军用连接插头插座、航空插孔、电视、电脑插头插座等(10-20孔以上)组装接线更加容易出错，检测难度也更高，出现多个断线故障时，恢复难度大，尤其军用连接插头插座在战场环境中，损坏后快速修复非常重要。
发明内容
为了解决现有的接线端子没有进行有效的标识、对应显示电源极性和颜色排序的技术问题，本发明提供一种具有明显颜色框标识、色块、色带、电线图案、数字、方向箭头、颜色引导线或者本国文字标识及凸起以提高接线 准确性的接线端子。
本发明的技术解决方案是：一种便于识别接线准确的接线端子，包括外壳和多个接线端，所述接线端由外壳内部伸出，其特殊之处在于：所述外壳上设置有多个标识区；所述标识区与接线端为一一对应的关系。
上述标识区是位于外壳外表面或者内表面上的平面标识、凸起、凹槽或者整体多色注塑。
上述标识区是色块、色带、方向箭头、电线图案、数字和字符中的一种或几种的组合。
上述色块是环绕于接线端周围的形状为圆形、圆环、方形或者方框的色块。
上述色带是与一端接线端相接的引导线。
上述字符是“火”、“地”、“零”、“进”、“出”、“控”、“上”、“下”、“N”和“L”中的一种或几种组合。
上述接线端子是插座、插头、刀开关、空气开关、断路器、电表、电动机、连接端子、发电机、或者变压器上的接线端子。
上述方向箭头设置在接线端子本身或连接电源线或外壳的表面。
上述方向箭头数量为多个，体现进出关系。
上述凸起或者凹槽为一个或多个，凸起或者凹槽的形状为圆形或方形。
本发明的有益效果在于：本发明在插座、插头、刀开关、空气开关、断路器、电表、电动机、变压器，电源线、发电机或者变压器等各类电路连接设备的接线端子上设置容易识别的标识区，与不同接线端对应的标识区设置不同的颜色和排序，各国字符能方便技术人员或者普通用户对火线、零线、接地等不同接线端进行准确区分识别，带颜色的标识区对应不同颜色的电源线，可以做到颜色、相序的统一，在意外断线后也可以很容易地准确接回，普通人员也能正确连接。不仅提高了接线安全性而且也增加了接线便捷性，大大提高了技术人员或者普通用户进行接线的效率，还应用于光纤交换机、网线交换机等信号传输网络。另外，单股或多股电源线设置方向箭头，显示电源走向，本发明提供的带颜色标记的接线端子应用于插座、插排、插头等，容易识别，提高准确接线成功率，两相插头设置颜色标记，使插座火线准确 连接电器设备熔断丝端，避免因接反导致熔断丝熔断后整个电源电路带电，提高了用电安全性，尤其对发电机和电动机的接线柱进行了颜色、位置排列和相许限定，即接线柱左起黄、绿、红、浅蓝(蓝)、相序顺时针旋转，即很容易实现从源头发电机到终端电动机进行平行传输、标识区颜色和排序的统一，无论中间经过多少升压站、变电站、开关站、低压变压器、传输电路等，都能实现本发明的目的，引导正确接线，本发明实施后，在任何一个负载端接入本实施例电动机都能实现顺时针转动，即和发电机转向相同，也避免现有交流三相A\B\C等于交流三相B\C\A和交流三相C\B\A，即转向一致而线路交叉的问题，通过颜色标识区很容易实现交流三相A\B\C唯一平行或多路多层连接，故障报修线路准确，特别适合地埋电缆频繁转接。
以上改进应用在刀开关、空气开关、断路器、电表、交流接触器、光纤连接器等电器设备的接线端子，同时对进出接线端部位接线颜色进行了限定，继而限定了电源线的颜色和方向，起到了承上启下的作用，即使普通用户的接线参照颜色、方向箭头对应也可达到专业人员接线水平，了解电源走向，可规范现有产品，可广泛应用在电源控制柜、开关柜、仪表箱、交换机等设备中，优点是电源或信号进出关系明确，消除接线错误，安装规范、普通用户也可操作、安全性大大增强，特别适合战场混乱环境。
附图说明
图1为本发明实施例一的结构示意图；
图2为本发明实施例二的结构示意图；
图3为本发明实施例三的正视示意图；
图4为本发明实施例四的内部结构示意图。
图5为本发明实施例五的结构示意图；
图6为本发明实施例六的结构示意图；
图7为本发明实施例七的结构示意图；
图8为本发明实施例八的结构示意图；
图9为本发明实施例九的结构示意图；
图10为本发明实施例十的结构示意图；
图11为本发明实施例十一的结构示意图；
图12为本发明配套使用的双芯护套线结构示意图。
具体实施方式
实施例一
本发明的接线端子可以应用于新国标电动汽车交流充电插头插座的正面或背面接线部分，同样适用于英标、美标、欧标、南非标或其他国家军用、民用、工业、航空插头插座等，包括方形、圆形两孔、三孔、四孔、五孔及七孔、九孔电动车插头插座和多孔插头插座，即两相插头插座方形圆形(火线零线)，两相带地线插头插座方形圆形(火线零线地线)，三相带地线插头插座方形圆形(火1、火2、火3、地线)，民用或工业五孔插头插座方形圆形(火1、火2、火3、零线地线)等组合。
参见图1，本实施例为新国标电动汽车交流充电插头，其接线端为七个铜插头插套11，在每个铜插头插套11的周围都环绕设置有一个不同颜色的圆形色块12、并在色块12的旁边设置了与其颜色相同的中英文字符13。其中，“火L1”和对应色块为黄色，“火L2”和对应色块为绿色，“火L3”和对应色块为红色，“N零”和对应色块为蓝色(浅蓝)，“充CC”和对应色块为白色，“控CP”和对应色块为黄色，“地”和对应色块为黄绿双色。新增颜色标注还包括环绕在插头插套尾部接线部分的塑料柱(空芯)，对其塑料柱外表或内部添加颜色，增加颜色的目的除了醒目、容易识别外，还对连接导线外皮颜色进行限定，参照我国交流三相五线颜色、直流电源线及控制线颜色的规定；颜色设置(印刷或注塑等)在插头插套底部外壳表面或插座插套顶部外壳表面，环绕着插头插套周围，形状为方形或圆形等，这样人们看到插头底部、插套顶部外壳表面的颜色时，第一反应是红色代表火线、蓝色(浅蓝)代表零线、黄绿双色代表地线、棕色代表直流正极、深蓝代表直流负极等，也能体现三相五线排序，也是本发明的目的，还有一定的警示作用，适用于各国不同插头插座，例如浙江省乐清市迈峰仪表接插件厂的CB2系列、CX系列、CY系列、GX系列、P系列、Y2M系列、YD系列、二次型接插件组系列，HDXBSCN重载连接器等插头座，但颜色要符合各国不同要求，如美标火线为黑色、蓝色(浅蓝)、红色、零线为白色，而英标火线为棕色、黑色、灰色，南非标火线为红色、黄色、蓝色(浅蓝)，零线为黑色等，大 多数用户在操作该方案两相插头***插座时，会自觉颜色对应，即红色对红色、蓝色(浅蓝)对蓝色(浅蓝)，接错后颜色差别明显，也容易发现误操作，颜色采用印刷或喷绘等工艺，醒目提示性强且长久保留。增加的颜色能体现上下对应插头、插套的极性，即火线、零线、地线等，该接线端子应用于弱电电路时，弱电信号部分的颜色选用应避开强电颜色设置。
实施例二
本发明的接线端子可以应用于新国标电动汽车九孔直流充电插头插座的正面或背面接线部分，同样适用于英标、美标、欧标、南非标或其他国家的军用、民用、工业、航空插头插座，接线方式有压接、焊接、螺钉固定连接线，包括方形、圆形两孔、三孔、四孔、五孔及七孔、九孔电动车插头等多位插头插座，例如泰兴市航联军用航空插头有限公司的Y2系列、Y50系列、XC、Y27系列、YMG系列、Y17系列、Y11、YP系列、Y50X系列、Y50EX、Y50DX系列、XCA系列、CXCH、XCM系列、XCG系列、XCE系列、XCF系列、XCD、YGD系列、JY系列、J7系列、J14系列、YF1系列、YF6系列等。
参见图2，本实施例为新国标电动汽车九孔直流充电插头，其接线端为九个铜插头插套21，在每个铜插头插套21的周围都环绕设置有一个不同颜色的圆形色块22、并在色块22的旁边设置了与其颜色相同的中英文字符23。其中，“S+”和对应色块为黄色，“CC2”和对应色块为绿色，“CC1”和对应色块为红色，“DC-”、“A-”和对应色块为蓝色(浅蓝)，“S-”和对应色块为黑色，“DC+”、“A+”和对应色块为棕色，“地”和对应色块为黄绿双色。新增颜色标注还包括环绕在插头插套尾部接线部分的塑料柱(空芯)，对其塑料柱外表或内部添加颜色，增加颜色的目的除了醒目、容易识别外，还对连接导线外皮颜色进行限定，即黄色对应黄色外皮颜色导线、绿色对应绿色外皮颜色导线，红色对应红色外皮颜色导线，蓝色(浅蓝)对应蓝色(浅蓝)外皮颜色导线，黄绿双色对应黄绿双色外皮颜色导线，黑色对应黑色外皮颜色导线，棕色对应棕色外皮颜色导线，以上改进普通用户通过颜色很容易对应接线，降低识别难度，还利于组装检测，接错后颜色差别明显，也容易发现误操作。一旦出现多股断线，用户通过颜色很容易准确连接，而传统 产品除了专业人员则无法连接。通过插头插套尾部颜色限定导线颜色及插头插套颜色对应，在本发明起到了承上启下的作用，做到了两条电缆通过插头插座准确对应连接，即颜色对颜色。颜色采用印刷或喷绘等工艺，醒目提示性强且长久保留。适用于各国不同插头插座，但颜色要符合各国不同要求。
实施例三
参见图3，本实施例为应用于国标三相插座的外壳前面板结构，插座生产厂家包括公牛、施耐德、TCL、西门子等。其接线端为四个插套插孔31，在每个插套插孔31的周围都环绕设置有一个不同颜色的方形色块32、并在色块32的旁边设置了与其颜色相同的中英文字符33。其中，“L火1”和对应色块为黄色，“L火2”和对应色块为绿色，“L火3”和对应色块为红色，“地”和对应色块为黄绿双色，该插头插座另一种应用是接地改为N零，大多应用于发电机上(不需要接地线环境)。这样人们看到插座颜色圈时，第一反应是红色、黄色、绿色对应代表火线、黄绿双色对应代表地线并且对应外壳面板内部插套的极性等，同样适用于方形、圆形单相、单相带地线、三相插头插座和模数插座等，颜色采用印刷或喷绘等工艺，醒目提示性、警示性强，且长久保留。增加的颜色能体现上下对应插头、插套的极性，即火线、零线、地线等。
实施例四
参见图4，本实施例为应用于国标两相带地线方形可拆式插头，包括10a、16a等规格插头，生产厂家包括公牛、施耐德、TCL、西门子等，同时也适用单相、单相带地线、三相插头、电源盒、定时器、温控器、电子仪表、插排、插座、开关、灯头等接线柱的内部接线，还可应用于空调、洗衣机、微波炉、模数插座等电器设备等，接线方式有压接、焊接、螺钉固定连接线等。本实施例的接线端为三个铜插头41，每个铜插头41的旁边都设置有一条不同颜色的条形色带42(即电源线引导线图案)，色带旁还设置有与其颜色相同的中英文字符43。色带42可以引导人们准确接线，同时对电源线的颜色进行限定，进一步规范接线和统一，满足一般人群操作，减少失误。其中，“火”、“L”和对应色带为红色，“零”、“N”和对应色带为蓝色(浅蓝)，“地”和对应色带为黄绿双色。颜色采用印刷或喷绘等工艺，醒目提示性强且长久保留。 适用于各国不同插头插座，但颜色要符合各国不同要求和习惯，标识区设置单相火线颜色参照各国三相火线颜色及使用习惯，我国习惯用火线用红色(三相火线颜色1黄色、2绿色、3红色)增加的颜色能体现上下对应插头、插套的极性，即火线、零线、地线等，接错后颜色差别明显，也容易发现误操作。
实施例五
参见图5，本实施例为应用于手机充电器，还包括应用于电视、电吹风、电钻、DVD播放机、充电器、电源盒等有熔断丝且有金属连接部件外漏的电器设备，还包括方形、圆形带线或不带线、单相、单相带地线、三相插头、插头支架等。本实施例的接线端为两相插头51，外壳四周表面的六个面上设置的标识区包括圆点状凸起52、条形色带53、中英文字符54和圆形色块55。其中，“L火”、与“L火”相连的色带以及位于“L火”上方的色块均为红色，“N零”、与“N零”相连的色带以及位于“N零”上方的色块均为蓝色(浅蓝)。这样人们手持充电器准备充电时，能从文字标识“上”识别上下，当文字向上***墙面上插座时，能做到电极对应，火线对应连接保险丝的触片电路，同时人们也可以通过点状凸起52(感知上下，不用目视，光线不佳也可识别上下，多次***形成习惯，不用眼睛看也能准确***墙面板插座，设置色带和色块的目的是对应插座的颜色准确***，普及右火线左零线的基本常识，同时可使产品更加美观，最主要是提高了安全系数，同样设置在、单相、单相带地线、三相插头等外壳后面或背面的颜色块，进一步显示插头插套极性和相序排列，方便人们从后面观察识别，尤其针对插头支架组装接线更容易。颜色采用印刷或喷绘等工艺，醒目提示性强且长久。适用于各国不同插头插座，但颜色要符合各国不同要求，标识区设置单相火线颜色参照各国三相火线颜色及使用习惯，我国习惯用红色(三相火线颜色1黄色、2绿色、3红色)增加的颜色能体现上下对应插头、插套的极性，即火线、零线、地线等，大多数用户在操作该方案两相插头***插座时，会自觉颜色对应，即红色对红色、蓝色(浅蓝)对蓝色(浅蓝)，而几乎所有开关、保险丝都连接红色电源线即火线上，传统国标两相插头则难于区分影响准确***，安全性差，一旦插反，即使关闭开关或保险丝熔断，也会使整个电路处于带电状态，容易出现电击伤人事故。
实施例六
参见图6，本实施例为应用于三相电表接线柱，生产厂家包括慈溪市周巷登发五金配件厂、慈溪市周巷建溪五金配件厂乐清市建荣电表配件厂等系列产品，另外也可应用于两相电表接线柱、各种螺丝式接线柱、电线连接器、灯头、熔断丝、胶木闸刀，变频器、面板开关、变频器、工业连接器等电器设备。本实施例的接线端为三相电表接线柱61，在接线柱61的外壳上设置有不同颜色的标识区，标识区包括接线孔表面的圆环形色块62、紧固螺丝处的方形色块63、对应的中英文字符64和方向箭头65，以对其进行有效的标识和颜色排序，具体排列次序从左到右依次为黄色、绿色、红色、蓝色(浅蓝)，同时增加了带颜色的中英文字符和方向箭头，颜色采用印刷或喷绘等工艺，醒目提示性强且长久，同时在灯头和墙面板开关对应增设中文数字控1、控2。适用于各国不同插头插座，但颜色要符合各国不同要求，另外限制了输入输出连接电源线的颜色和方向，即黄色对应黄色外皮颜色导线，绿色对应绿色外皮颜色导线，红色对应红色外皮颜色导线，蓝色(浅蓝)对应蓝色(浅蓝)外皮颜色导线，本发明在上述电源线连接孔设置了醒目的带颜色的方向箭头，清晰地显示电源进出关系，即电源(电源线)→电表进线孔→电表出线孔→断路器→负载，进一步规范接线和统一，满足一般人群操作，减少失误，用户连接电表时，会自觉颜色对应，遵照方向箭头提示，准确接线，接错后颜色差别明显，进一步减少误操作，进一步提高电源箱品质，更具人性化。
实施例七
本发明可应用于电路板***式连接端子，产品包括可拼接螺钉式PCB接线端子、插拔式PCB接线端子等，生产厂家包括慈溪市科发电子有限公司、慈溪市联哲电子有限公司等，可大量应用于电源转换电路、通讯信号等电路中，还包括应用于插拔式接线连接端子、多位连接器、排接线板、连接线排端子等，产品包括电器电源主板、变频器、相许继电器、温控器电子仪表等。在接线端
参见图7，本实施例的接线端子包括八个接线端71，从左至右依次为三个火线接线端、零线接线端、地线接线端、+12V接线端、+5V接线端和负极接线端。在每个接线端71的外壳表面均设置有不同颜色的标识区，对其进行 有效的标识和颜色排序，标识区具体可包括色块72和与其一一对应的中英文字符73。“L1火”对应的色块颜色为黄色，“L2火”对应的色块颜色为绿色，“L3火”对应的色块颜色为红色，“N零”对应的色块颜色为蓝色(浅蓝)，“地”对应的色块颜色为黄绿双色，“+12”对应的色块颜色为深棕色，“+5”对应的色块颜色为棕色，“-”对应的色块颜色蓝色(浅蓝)，即颜色随交直流电压高低对应深浅变化。颜色要符合各国不同要求，接错后颜色差别明显，也容易发现误操作，该接线端子应用于弱电电路时，弱电信号部分的颜色选用应避开强电颜色设置。
实施例八
参见图8，本实施例为接插型电路板***式连接器，例如浙江红星电业有限公司生产的家用电器、计算机、摩托车、汽车等配套的线束电连接器及端子，包括公母胶壳和公母端子，大量应用于电源转换电路、通讯信号、电脑电源、线束等电路中。本实施例的接线端子包括四个接线端81，在接插型电路板***式连接器的外壳表面对应设置了四个不同颜色的标识区82，以对其进行有效的标识和颜色排序，即排列次序从左到右依次为黄色、绿色、红色、蓝色(浅蓝)，黄色标识区对应黄色电源线、绿色标识区对应绿色电源线、红色标识区对应红色电源线、蓝色(浅蓝)标识区对应蓝色(浅蓝)电源线，操作人员容易发现接线错误，产品也更加美观，该色块也可为单一颜色或者多种颜色组合。
实施例九
本发明可应用于塑壳断路器，生产厂家包括正泰、红波、上海人民电器、施耐德、ABB等，还包括空气开关、断路器、漏电断路器、漏电保护器、交流接触器、模数插座、浪涌保护器、双电源转换开关、隔离开关等。参见图9，本实施例的断路器上设置有四个接线端91，从左至右分别为三个火线接线端和一个零线接线端。每个接线端的旁边均设置有不同颜色的环形色块92和对应的中英文字符93。对其进行有效的标识和颜色排序，从左到右的四个色块依次为黄色、绿色、红色、蓝色(浅蓝)，并新增加了带颜色的中英文字符和方向箭头，其中“L1火”为黄色，对应黄色箭头和周围环绕黄色的接线柱；“L2火”为绿色，对应绿色箭头和周围环绕绿色的接线柱；“L3火”为红色， 对应红色箭头和周围环绕红色的接线柱；“N零”为蓝色(浅蓝)，对应蓝色(浅蓝)箭头和周围环绕蓝色(浅蓝)的接线柱。当人们连接断路器时，四个黄色色环(两个设置在螺丝孔周围、两个设置在接线孔周围)引导用户将黄色电源线接入，并用方向箭头和中英文字符给予警示及对应走向，数字大小代表相序排列顺序，也容易发现误操作。
实施例十
本发明可应用于拉杆、杠杆式开启式闸刀开关，生产厂家包括上海人民电器、上海邦开电气有限公司、浙江固柏电力科技有限公司、上海晶峰电器有限公司等，还包括倒顺开关、高压负荷开关、真空开关、油开关、胶木闸刀、双向闸刀开关等。参见图10，本实施例的接线端包括三个静刀头接线端101和三个动刀头接线端102，在传统闸刀开关上增加了对应不同颜色的标识区，具体包括色块103和中英文字符104、方向箭头105，以对其进行有效的标识和颜色排序。色块的排列次序从左到右依次为黄色、绿色、红色。“A火”对应黄色色块和方向箭头，“B火”对应绿色色块和方向箭头，“C火”对应红色色块和方向箭头。该开启式闸刀开关应用于控制柜时，进一步限制安装操作人员，没有经过培训的普通人员接线时，很容易将黄色电源线连接在黄色色块对应的接线端处、将绿色电源线连接在绿色色块对应的接线端处、将红色电源线连接在红色色块对应的接线端处，容易形成统一规格，同时用方向箭头、数字、中英文字符给予警示，数字大小代表相序排列顺序，接错后颜色差别明显，也容易发现误操作，提醒操作人员改正。
实施例十一
本发明可应用于电动机接线柱，生产厂家包括邵阳市北塔电机配件有限公司、乐清搜龙电气有限公司、温岭市银威机电配件厂等。参见图11，本实施的接线端为三组铜接头111，在每个铜接头周围设置有对应颜色的色块112和中英文字符113。四个不同颜色的色块与中英文字符为一一对应的关系，“L1火”、“U1”和“U2”对应黄色色块，“L2火”、“V1”和“V2”对应绿色色块，“L3火”、“W1”和“W2”对应红色色块，“N零”对应蓝色(浅蓝)色块，数字代表相序排列顺序，。
图12为双芯护套线，还包括单芯和多芯电源线等，由红色电源线121和蓝色电源线122组成，在其表面增设了方向箭头123，来体现电源进出及走向关系，与常规长度米数设计无关，该护套线和本发明中的电表、交流接触器、连接端子、断路器、模数插座、刀开关等配合使用，组成的电源控制箱，内部结构一目了然，更加合理及人性化。
本发明提供的接线端子从发电站设置颜色、字母、中文汉字标记，例如A-黄色-火线、B-绿色-火线、C-红色-火线、N-浅蓝色(浅蓝)-零线，双色(黄绿色)-接地，配套的升压站-变电站-开关站-低压变压器的连接端子也按此设置。具体设置方式如下：
(1)首先将发电机相序顺时针旋转时的状态，接线端子设置为A-黄色-火线、B-绿色-火线、C-红色-火线。(水平从左到右、垂直从上到下)。
(2)在连接的电源线上设置方向箭头，显示电源走向。
(3)升压变压器和开关的接线端子也为A-黄色-火线、B-绿色-火线、C-红色-火线。(水平从左到右、垂直从上到下)，输出输入平行对应。
(4)输送高压铁塔瓷瓶A-黄色-火线、B-绿色-火线、C-红色-火线。(水平从左到右、垂直从上到下)。
(5)用户低压变压器输入为A-黄色-火线、B-绿色-火线、C-红色-火线，输出A-黄色-火线、B-绿色-火线、C-红色-火线、N-浅蓝色(浅蓝)-零线(水平从左到右、垂直从上到下)。
(6)用户电表箱组成部件断路器、空开、电表等接线端子为A-黄色-火线、B-绿色-火线、C-红色-火线、N-浅蓝色(浅蓝)-零线(水平从左到右、垂直从上到下)。
(7)用户低压电器380v或220v开关、插座、温控器、定时器、变频器、电源盒、电动机、接触器、继电器等的接线端子，用颜色、图案、字母、汉字来标记，标记参照A-黄色-火线、B-绿色-火线、C-红色-火线、N-浅蓝色(浅蓝)-零线、双色(黄绿色)-接地(水平从左到右、垂直从上到下)。
(8)用户插座、插排、插头设置颜色标记，容易识别，提高准确接线成功率，两相插头设置颜色标记，使火线连接电器设备熔断丝，避免因接反导致熔断丝熔断后整个电源电路带电，克服了单向两相插头的先天性不足。
以上实施例仅用于说明本发明的实施方式，并不能以此来限定本发明的权利范围。应当指出，对于本技术领域的普通技术人员来说，对本发明的技术方案进行修改或者等同替换，都不脱离本发明的保护范围。

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  1. 一种便于识别接线准确的接线端子，包括外壳和多个接线端，所述接线端由外壳内部伸出，其特征在于：所述外壳上设置有多个标识区；所述标识区与接线端为一一对应的关系。
  2. 根据权利要求1所述的便于识别接线准确的接线端子，其特征在于：所述标识区是位于外壳外表面或者内表面上的平面标识、凸起、凹槽或者整体多色注塑。
  3. 根据权利要求2所述的便于识别接线准确的接线端子，其特征在于：所述标识区是色块、色带、方向箭头、电线图案、数字和字符中的一种或几种的组合。
  4. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述色块是环绕于接线端周围的形状为圆形、圆环、方形或者方框的色块。
  5. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述色带是与一端接线端相接的引导线。
  6. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述字符是“火”、“地”、“零”、“进”、“出”、“控”、“上”、“下”、“N”和“L”中的一种或几种组合。
  7. 根据权利要求1-6中任一所述的便于识别接线准确的接线端子，其特征在于：所述接线端子是插座、插头、刀开关、空气开关、断路器、电表、电动机、连接端子、发电机、或者变压器上的接线端子。
  8. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述方向箭头设置在接线端子本身或连接电源线或外壳的表面。
  9. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述方向箭头数量为多个，体现进出关系。
  10. 根据权利要求3所述的便于识别接线准确的接线端子，其特征在于：所述凸起或者凹槽为一个或多个，凸起或者凹槽的形状为圆形或方形。
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