WO2023160466A1 - 一种具有保护功能的端子 - Google Patents

一种具有保护功能的端子 Download PDF

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Publication number
WO2023160466A1
WO2023160466A1 PCT/CN2023/076689 CN2023076689W WO2023160466A1 WO 2023160466 A1 WO2023160466 A1 WO 2023160466A1 CN 2023076689 W CN2023076689 W CN 2023076689W WO 2023160466 A1 WO2023160466 A1 WO 2023160466A1
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WO
WIPO (PCT)
Prior art keywords
terminal
terminal body
protection
function according
protective
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Application number
PCT/CN2023/076689
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English (en)
French (fr)
Inventor
王超
Original Assignee
长春捷翼汽车科技股份有限公司
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Application filed by 长春捷翼汽车科技股份有限公司 filed Critical 长春捷翼汽车科技股份有限公司
Publication of WO2023160466A1 publication Critical patent/WO2023160466A1/zh

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Classifications

    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the application belongs to the technical field of electric energy transmission, and in particular relates to a terminal with a protection function.
  • the internal terminals are all male terminals and female terminals.
  • the female terminal has an insertion cavity surrounded by a plurality of elastic pieces, and the insertion cavity can accommodate the insertion of the male terminal.
  • the elastic sheet is elastic, and it is also easily deformed by external force. Once deformed, the elastic force exerted by each elastic sheet on the male terminal will be different.
  • the male terminal and the elastic sheet at the place where the force is large It is easier to wear off the plating layer of the terminal during repeated plugging and unplugging of the terminal.
  • the plating of the terminal is to improve the corrosion resistance of the terminal, improve the electrical conductivity, increase the number of plugging times, and prolong the service life.
  • the resistance of the terminal will increase and the conductivity will decrease, seriously affecting the charging efficiency.
  • the increase in resistance will also lead to an increase in temperature, especially in high-voltage charging, the rapid increase in temperature can easily cause accidents and endanger life and property safety.
  • there is currently a lack of a measure for protecting the elastic sheet of the female terminal Therefore urgently need a kind of new scheme to solve the above-mentioned problem.
  • the purpose of this application is to provide a terminal with protection function, which can protect the elastic arm of the terminal body and prevent it from being deformed by external force.
  • a terminal with a protective function including a terminal body and a protective part
  • the terminal body includes an elastic sheet and an insertion cavity surrounded by the elastic sheet;
  • the protective part is sheathed on the terminal body, and the protective part is provided with an opening capable of accommodating the radial passage of the elastic piece;
  • the openings are in one-to-one correspondence with the elastic sheets.
  • the inner diameter of the insertion cavity gradually decreases toward the free end of the elastic piece.
  • the terminal body is provided with a card point protruding from the surface of the terminal body
  • the protective part is provided with a bayonet
  • the protective part and the terminal body pass through the bayonet and the card. Click to connect.
  • the terminal body is provided with a clamping part, and the clamping part has a slope facing the free end of the elastic sheet and a clamping surface facing the other end of the elastic sheet and protruding from the surface of the terminal body.
  • the connecting surface is perpendicular to the surface of the terminal body; the guard part is provided with a clamping opening which is clamped with the clamping part.
  • the protective part is provided with a U-shaped slot
  • the terminal body is provided with a blocking part
  • the U-shaped slot cooperates with the blocking part to restrain the protective part from the free end of the elastic sheet. Move to the other end.
  • the terminal body further includes a connection end, and the connection end is connected to a cable.
  • a supporting body is injected into the terminal body.
  • the protection part has an axial opening.
  • the sum of the surface areas of the openings is 55%-96% of the surface area of the protective part.
  • the terminal body is provided with an installation hole for installing a temperature sensor.
  • the terminal body and the protective part are formed by cutting, stamping or bending from a plate.
  • the protective part can protect the elastic sheet of the terminal body.
  • the protective part can also support the elastic sheet as a whole, preventing other devices from pressing the elastic sheet and causing it to deform.
  • the elastic sheet When the elastic sheet is pressed from the inside to the outside by the male terminal, the elastic sheet can be stretched through the opening to complete the insertion of the male terminal.
  • the supporting body can support it inside the terminal body and prevent it from being deformed. The cooperation between the card point and the bayonet socket can make the protective part be fixed on the terminal body.
  • FIG. 1 is a schematic structural diagram of a terminal with a protection function in the present application.
  • FIG. 2 is a schematic diagram of a terminal body of a terminal with a protection function in the present application.
  • FIG. 3 is a schematic diagram of a protective part of a terminal with a protective function in the present application.
  • FIG. 4 is a schematic diagram of a connection end of a terminal with a protection function in the present application.
  • FIG. 5 is a schematic diagram of a support body of a terminal with a protection function in the present application.
  • FIG. 6 is a schematic diagram of an opening of a terminal with a protection function in the present application.
  • Terminal body 1. Terminal body; 2. Protective part; 3. Support body; 11. Elastic piece; 12. Sticking point; 13. Holding part; 14. Blocking part; 15. Connecting end; 16. Mounting hole; 21. Opening ; 22, bayonet; 23, holding mouth; 24, U-shaped slot; 25, opening.
  • a terminal with a protective function includes a terminal body 1 and a protective part 2; the terminal body 1 includes an elastic sheet 11 and an insertion cavity surrounded by the elastic sheet 11; the The protection part 2 is sheathed on the terminal body 1 , and the protection part 2 is provided with an opening 21 capable of accommodating the radial passage of the elastic piece; the opening 21 corresponds to the elastic piece 11 one by one.
  • the terminal body 1 set in the charging stand as an example, when the male terminal on the charging gun is inserted into the socket cavity surrounded by the elastic sheet 11 of the terminal body 1, the male terminal will press the elastic sheet 11 from the inside to the outside, making the elastic Sheet 11 is spread apart to achieve an interference fit.
  • the elastic sheet is easily deformed by the extrusion of surrounding equipment.
  • an additional insertion force will be applied to a certain elastic piece 11 to deform it.
  • the deformed elastic sheet 11 is more likely to wear off the plating layer during repeated insertion and extraction of the male terminal. Once the plating layer is worn out and the material of the terminal body 1 is exposed, the resistance of the terminal body 1 will increase, the conductivity will decrease, and the charging efficiency will be seriously affected.
  • the protective part 2 can protect the elastic sheet 11 .
  • the protection part 2 is sleeved on the terminal body 1, and when the male terminal is inserted into the insertion cavity, it will be constrained by the end of the protection part 2 and can be inserted right into the insertion cavity.
  • the protective part 2 can also play an overall supporting role for the elastic sheet 11, preventing other devices from pressing the elastic sheet.
  • the opening 21 of the protection part 2 is larger than the elastic sheet 11. When the elastic sheet 11 is pressed from the inside to the outside by the male terminal, the elastic sheet 11 can be stretched through the opening 21 to complete the insertion of the male terminal.
  • the inner diameter of the insertion cavity decreases gradually toward the free end of the elastic piece 11 . That is, the hole diameter of the insertion cavity is the smallest on the free end side of the elastic piece 11, which not only enables the male terminal to be inserted into the insertion cavity, but also enables the elastic piece 11 to have a larger deformation space, so that the male terminal has a larger space after insertion. Grip.
  • the terminal body 1 is provided with a card point 12 protruding from the surface of the terminal body 1, and the protection part 2 is provided with a bayonet 22, and the protection part 2 and the terminal body 1 is connected through the bayonet socket 22 and the bayonet point 12.
  • the bayonet socket 22 cooperates with the clip point 12 to fix the protection part 2 on the terminal body 1 .
  • Axial slits can be provided on the protection part 2 to facilitate slight deformation of the protection part 2 and facilitate insertion on the clamping point 12 .
  • the terminal body 1 is provided with a clamping portion 13 , and the clamping portion 13 has a slope facing toward the free end of the elastic sheet 11 and protruding from the terminal body 1 toward the other end of the elastic sheet 11 .
  • the clamping surface on the surface is perpendicular to the surface of the terminal body 1 ; the guard part 2 is provided with a clamping opening 23 which is clamped with the clamping part 13 .
  • the clamping opening 23 is clamped with the clamping portion 13 along the slope, and the clamping surface will restrict the clamping opening 23 from coming out after the clamping, thereby completing the clamping connection.
  • the protection part 2 is provided with a U-shaped slot 24, and the terminal body 1 is provided with a blocking part 14, and the U-shaped slot 24 cooperates with the blocking part 14 to constrain the protection part 2. Move from the free end of the elastic sheet 11 to the other end. As shown in Figure 3, the clamping surface of the clamping part 13 can only block the movement of the protection part 2 in one direction in the axial direction, and the cooperation of the U-shaped locking groove 24 and the blocking part 14 can block the movement of the protection part 2 in the other direction in the axial direction. A directional movement.
  • the terminal body 1 further includes a connection end 15, and the connection end 15 is connected to a cable.
  • the connection end 15 is connected with a cable to realize the transmission of electric energy and signals.
  • the cross-sectional shape of the connecting end 15 is circular, oval, open ring, U-shaped, flat-shaped, polygonal, and different cross-sectional shapes can be selected according to the cross-sectional shape of the cable or the corresponding connection method.
  • the connection between the connection end 15 and the cable can be connected by crimping or welding.
  • the crimping is a mechanical deformation method, and pressure is applied to deform the connection end 15 and some cables inside it.
  • the cable and the connection end 15 are fully in contact and connected together by friction. Welding methods include ultrasonic welding, resistance welding, arc welding, pressure welding, electromagnetic welding, laser welding and other welding methods.
  • the connection end 15 and some cables are welded together to achieve stable electrical and mechanical properties.
  • a supporting body 3 is injected into the terminal body 1 .
  • the supporting body 3 can be formed by injection molding into the terminal body 1 , which can support the terminal body 1 and prevent its deformation.
  • the shield 2 has an axial opening 25 . As shown in FIG. 6 , the opening 25 provides tension to the protection part 2 to facilitate the sleeve of the protection part 2 on the terminal body.
  • the sum of the surface areas of the openings 21 is 55%-96% of the surface area of the protection part 2 . If the surface area of the opening 21 is too small, the elastic sheet 11 cannot fully protrude from the opening 21. If the sum of the surface areas of the openings 21 accounts for too much of the surface area of the protection part 2, the rigidity and supporting force of the protection part will be insufficient. , the terminal body 1 cannot be sufficiently protected. In order to find a suitable ratio of the sum of the surface areas of the openings 21 to the surface area of the protection part 2, the inventor conducted a related test.
  • the test method was to select the same terminal body 1 and different protection parts 2, and the sum of the surface areas of each protection part 2 Different, if the male terminal is inserted into the terminal body 1, if the protective part does not affect the stretching of the elastic sheet 11, it is qualified. In addition, place the protective part 2 horizontally and press the protective part 2 with a force of 80N. If the protective part 2 is deformed, it is unqualified. The results are shown in Table 1.
  • Table 1 Effects of the ratio of the sum of the surface areas of the openings 21 to the surface area of the protective part 2 on the elastic sheet and the protective part
  • the openings 21 when the ratio of the sum of the surface areas of the openings 21 to the surface area of the protective part 2 is less than 55%, the openings 21 will block the stretching of the elastic sheet because they are not wide enough.
  • the ratio of the sum of the surface areas of the openings 21 to the surface area of the protective part 2 is greater than 96%, the strength of the protective part 2 cannot be guaranteed, and deformation will occur under a pressure of 80N, which will inevitably further affect the strength of the terminal body 1 in actual use.
  • the inventors prefer that the sum of the surface areas of the openings 21 is 55%-96% of the surface area of the protection part 2 .
  • the terminal body 1 is provided with an installation hole 16 for installing a temperature sensor.
  • the temperature sensor is in interference fit with the installation hole 16 .
  • the outer wall of the temperature sensor is provided with external threads
  • the installation hole 16 is provided with internal threads
  • the temperature sensor is threadedly connected with the installation hole 16 .
  • the temperature sensor can be connected with the transmission cable after the temperature sensor is installed.
  • the temperature sensor is provided with a shielding layer outside, which can shield the interference of the external magnetic field on the temperature sensor, ensure that the signal transmitted by the temperature sensor is stable and not distorted, and ensure the accuracy of data.
  • the temperature sensor is an NTC temperature sensor or a PTC temperature sensor.
  • thermometers are small in size and can measure gaps that cannot be measured by other thermometers; they are easy to use, and the resistance value can be arbitrarily selected from 0.1 to 100k ⁇ ; they are easy to process into complex shapes, can be mass-produced, and have good stability. , Strong overload capacity, suitable for conversion joints, which require small size and stable performance.
  • the terminal body 1 and the protective part 2 are formed by cutting, stamping or bending from a plate.
  • the base material of the terminal body 1 is in the shape of a sheet, and the processing method of stamping, cutting or bending the plate is simple and mature, and the terminal body 1 and the protective part 2 can be produced in large quantities quickly, saving processing costs and improving production efficiency.

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Abstract

一种具有保护功能的端子，属于电能传输技术领域，具体的涉及一种具有保护功能的端子。包括端子本体和防护部；所述端子本体上包括弹性片及所述弹性片围成的插接腔；所述防护部套设在所述端子本体上，所述防护部上设置有能够容纳所述弹性片径向通过的开孔；所述开孔与所述弹性片一一对应。防护部能够对端子本体的弹性片起到了保护作用。公端端子在插入插接腔时，会受到防护部的约束，能够正对插接腔插入，避免某个弹性片受力过大发生变形。防护部也能对弹性片起到整体的支撑作用，防止其他器件对弹性片的挤压而使其变形。当弹性片受到公端端子自内而外的挤压时，弹性片可以经开孔撑开，完成公端端子的插接。

Description

一种具有保护功能的端子
本申请要求享有2022年2月24日递交、申请号为CN202220385846.1、实用新型名称为“一种具有保护功能的端子”的中国专利的优先权，该专利的所有内容在此全部引入。
技术领域
本申请属于电能传输技术领域，具体的涉及一种具有保护功能的端子。
背景技术
在电气连接领域，有很多电气回路都需要接插端子进行连接，目前大多数使用的都是公端子与母端子对插实现连接，尤其是在大电流、大线径的线束上，例如目前发展迅速的新能源汽车，为电池进行充电的充电枪头和充电座，内部的端子都是公端子与母端子对插的结构。母端子具有多个弹性片围成的插接腔，插接腔能够容纳公端端子插入。弹性片具有弹性，同时也容易受外力挤压发生形变，一旦变形，每个弹性片对公端端子施加的弹性力将会不同，这时，受力大的地方的公端端子和弹性片就更容易在端子的反复插拔中将端子的镀层磨损掉。端子的镀层是是为了提高端子的耐腐蚀性，提高导电性能，增加接插次数，延长使用寿命。一旦镀层磨损露出端子本体的材质，就会使端子的电阻增加，导电率降低，严重影响充电的效率。电阻增加同时也会导致温度的升高，尤其在高压充电中，温度的快速升高很容易引发事故危害生命及财产安全。而目前缺少一种对母端子的弹性片进行保护的措施。因此亟需一种新的方案来解决上述问题。
发明内容
本申请的目的是提供一种具有保护功能的端子，对端子本体的弹性臂进行保护，防止其受到外力而发生变形。
一种具有保护功能的端子，包括端子本体和防护部；
所述端子本体上包括弹性片及所述弹性片围成的插接腔；
所述防护部套设在所述端子本体上，所述防护部上设置有能够容纳所述弹性片径向通过的开孔；
所述开孔与所述弹性片一一对应。
进一步的，所述插接腔的内径朝靠近所述弹性片自由端的方向逐渐减小。
进一步的，所述端子本体上设置有凸出于所述端子本体表面的卡点，所述防护部上设置有卡口，所述防护部和所述端子本体通过所述卡口及所述卡点卡接。
进一步的，所述端子本体上设置有卡持部，卡持部具有朝向所述弹性片自由端的斜面及朝向所述弹性片另一端且突出于所述端子本体表面的卡接面，所述卡接面垂直于所述端子本体的表面；所述防护部上设置有与所述卡持部卡接的卡持口。
进一步的，所述防护部上设置有U型卡槽，所述端子本体上设置有阻挡部，所述U型卡槽与所述阻挡部配合以约束所述防护部自所述弹性片自由端向另一端运动。
更进一步的所述端子本体还包括连接端，所述连接端与线缆连接。
进一步的，所述端子本体内注塑有支撑体。
更进一步的，所述防护部具有轴向的开口。
进一步的，所述开孔的表面积之和为所述防护部表面积的55％-96％。
进一步的，所述端子本体上设置有用于安装温度传感器的安装孔。
更进一步的，所述端子本体和所述防护部是由板材切割或冲压或折弯成型。
本申请的有益效果是：防护部能够对端子本体的弹性片起到了保护作用。公端端子在插入插接腔时，会受到防护部的约束，能够正对插接腔插入，避免某个弹性片受力过大发生变形。防护部也能对弹性片起到整体的支撑作用，防止其他器件对弹性片的挤压而使其变形。当弹性片受到公端端子自内而外的挤压时，弹性片可以经开孔撑开，完成公端端子的插接。支撑体能够在端子本体内部对其支撑，防止其发生变形。卡点和卡口配合能够使防护部固定在端子本体上。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本申请的实施例，并且连同其说明一起用于解释本申请的原理。
图1为本申请一种具有保护功能的端子的结构示意图。
图2为本申请一种具有保护功能的端子的端子本体示意图。
图3为本申请一种具有保护功能的端子的防护部示意图。
图4为本申请一种具有保护功能的端子的连接端示意图。
图5为本申请一种具有保护功能的端子的支撑体示意图。
图6为本申请一种具有保护功能的端子的开口示意图。
图中标示如下：
1、端子本体；2、防护部；3、支撑体；11、弹性片；12、卡点；13、卡持部；14、阻挡部；15、连接端；16、安装孔；21、开孔；22、卡口；23、卡持口；24、U型卡槽；25、开口。
具体实施方式
现在将参照附图来详细描述本申请的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
一种具有保护功能的端子，如图1-图6所示，包括端子本体1和防护部2；所述端子本体1上包括弹性片11及所述弹性片11围成的插接腔；所述防护部2套设在所述端子本体1上，所述防护部2上设置有能够容纳所述弹性片径向通过的开孔21；所述开孔21与所述弹性片11一一对应。以端子本体1设置在充电座中为例，充电枪上的公端端子插入端子本体1的弹性片11所围城的插接腔中时，公端端子会从内向外挤压弹性片11，使弹性片11撑开以实现过盈配合。在实际使用中，弹性片很容易受到周围设备的挤压而发生变形。在插接时，公端端子的插入方向没有与插接腔对正也会对某个弹性片11施加额外的插接力而使其变形。变形后的弹性片11就更容易在公端端子的反复插拔中将镀层磨损掉。一旦镀层磨损，露出端子本体1的材质，就会使端子本体1的电阻增加，导电率降低，严重影响充电的效率。而安装了防护部2后，防护部2就能对弹性片11起到了保护作用。防护部2套接在端子本体1上，公端端子在插入插接腔时，会受到防护部2端部的约束，能够正对插接腔插入。防护部2也能对弹性片11起到整体的支撑作用，防止其他器件对弹性片的挤压。防护部2的开孔21比弹性片11大，当弹性片11受到公端端子自内而外的挤压时，弹性片11可以经开孔21撑开，完成于公端端子的插接。
在一些实施例中，所述插接腔的内径朝靠近所述弹性片11自由端的方向逐渐减小。即插接腔在弹性片11的自由端一侧的孔径最小，既使公端端子能够插入到插接腔内，又使弹性片11具有更大的变形空间，使公端端子插入后具有更大的抓紧力。
在一些实施例中，所述端子本体1上设置有凸出于所述端子本体1表面的卡点12，所述防护部2上设置有卡口22，所述防护部2和所述端子本体1通过所述卡口22及所述卡点12卡接。如图2和图3所示，卡口22与卡点12配合卡接，使防护部2固定在端子本体1上。防护部2上可以设置轴向的裂缝，以方便防护部2发生轻微的形变，便于插接在卡点12上。
在一些实施例中，所述端子本体1上设置有卡持部13，卡持部13具有朝向所述弹性片11自由端的斜面及朝向所述弹性片11另一端且突出于所述端子本体1表面的卡接面，所述卡接面垂直于所述端子本体1的表面；所述防护部2上设置有与所述卡持部13卡接的卡持口23。卡持口23顺着斜面与卡持部13卡接，卡接后卡接面将限制卡持口23脱出，从而完成卡接。
进一步的，所述防护部2上设置有U型卡槽24，所述端子本体1上设置有阻挡部14，所述U型卡槽24与所述阻挡部14配合以约束所述防护部2自所述弹性片11自由端向另一端运动。如图3所示，卡持部13的卡接面只能阻挡防护部2向在轴向方向一个朝向的移动，U型卡槽24和阻挡部14配合能够阻挡防护部2在轴向方向另一个朝向的移动。
在一些实施例中，所述端子本体1还包括连接端15，所述连接端15与线缆连接。如图4所示，连接端15与线缆连接以实现电能和信号的传递。连接端15截面形状为圆形、椭圆形、开口环形、U形、平板形、多边形，可以根据线缆的截面形状或者对应的连接方式，选择不同的截面形状。连接端15与线缆的连接，可以采用压接或焊接的方式进行连接，压接是采用机械变形的方式，施加压力使连接端15和其内部的部分线缆一起变形，线缆和连接端15内部充分接触并依靠摩擦力连接在一起。焊接的方式包括超声波焊接、电阻焊接、弧焊、压力焊接、电磁焊接、激光焊接等焊接方式，将连接端15和部分线缆焊接在一起，实现稳定的电学性能和力学性能。
在一些实施例中，所述端子本体1内注塑有支撑体3。如图5所示，支撑体3可以通过向端子本体1内注塑形成，能够对端子本体1起到支撑作用防止其发生变形。
在一些实施例中，所述防护部2具有轴向的开口25。如图6所示，开口25给防护部2提供张力，方便防护部2套接在端子本体上。
在一些实施例中，所述开孔21的表面积之和为所述防护部2表面积的55％-96％。开孔21的表面积如果占比过小，则弹性片11无法充分伸出开孔21，如果开孔21的表面积之和占防护部2表面积过大则会造成防护部的刚性不够，支撑力不足，无法对端子本体1起到足够的保护作用。发明人为了寻找合适的开孔21的表面积之和与防护部2表面积的比，进行了相关试验，试验方法为选择相同的端子本体1和不同的防护部2，每个防护部2表面积之和不同，使用公端端子插入端子本体1，如果防护部不影响弹性片11的撑开为合格。另外，将防护部2水平放置，采用80N的力压迫防护部2，如果防护部2发生变形则为不合格，结果如表1所示。
表1：开孔21的表面积之和与防护部2表面积的比对弹性片及防护部的影响
如表1所示，当开孔21的表面积之和与防护部2表面积的比小于55％时，开孔21将会因为不够开阔而阻挡弹性片的撑开。当开孔21的表面积之和与防护部2表面积的比大于96％时，防护部2的强度无法得到保证，在80N的压力下会发生变形，在实际使用总势必会进一步影响端子本体1的正常工作，因此，发明人优选所述开孔21的表面积之和为所述防护部2表面积的55％-96％。
在一些实施例中，所述端子本体1上设置有用于安装温度传感器的安装孔16。如图4所示，所述温度传感器与所述安装孔16过盈配合。或者所述温度传感器的外壁设置有外螺纹，所述安装孔16设置有内螺纹，所述温度传感器与所述安装孔16螺纹连接。可以将温度传感器安装后在将温度传感器与传输线缆连接。所述温度传感器外部设置有屏蔽层，能够屏蔽外界磁场对温度传感器的干扰，保证温度传感器传输的信号稳定不失真，保证数据的准确性。所述温度传感器为NTC温度传感器或PTC温度传感器。采用这两种温度传感器的好处是体积小，能够测量其他温度计无法测量的空隙；使用方便，电阻值可在0.1～100kΩ间任意选择；易加工成复杂的形状，可大批量生产，稳定性好、过载能力强，适用于转换接头这种要求体积小，性能稳定的产品中。
在一些实施例中，所述端子本体1和所述防护部2是由板材切割或冲压或折弯成型。端子本体1的基材为薄片状，板材冲压或切割或折弯的加工方式简单，工艺成熟，可以快速大批量的端子本体1和所述防护部2，节省加工成本，提高生产效率。
虽然已经通过例子对本申请的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本申请的范围。本领域的技术人员应该理解，可在不脱离本申请的范围和精神的情况下，对以上实施例进行修改。本申请的范围由所附权利要求来限定。

Claims (11)

  1. 一种具有保护功能的端子，其特征在于：包括端子本体(1)和防护部(2)；
    所述端子本体(1)上包括弹性片(11)及所述弹性片(11)围成的插接腔；
    所述防护部(2)套设在所述端子本体(1)上，所述防护部(2)上设置有能够容纳所述弹性片径向通过的开孔(21)；
    所述开孔(21)与所述弹性片(11)一一对应。
  2. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述插接腔的内径朝靠近所述弹性片(11)自由端的方向逐渐减小。
  3. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)上设置有凸出于所述端子本体(1)表面的卡点(12)，所述防护部(2)上设置有卡口(22)，所述防护部(2)和所述端子本体(1)通过所述卡口(22)及所述卡点(12)卡接。
  4. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)上设置有卡持部(13)，卡持部(13)具有朝向所述弹性片(11)自由端的斜面及朝向所述弹性片(11)另一端且突出于所述端子本体(1)表面的卡接面，所述卡接面垂直于所述端子本体(1)的表面；所述防护部(2)上设置有与所述卡持部(13)卡接的卡持口(23)。
  5. 根据权利要求4所述的一种具有保护功能的端子，其特征在于：所述防护部(2)上设置有U型卡槽(24)，所述端子本体(1)上设置有阻挡部(14)，所述U型卡槽(24)与所述阻挡部(14)配合以约束所述防护部(2)自所述弹性片(11)自由端向另一端运动。
  6. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)还包括连接端(15)，所述连接端(15)与线缆连接。
  7. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)内注塑有支撑体(3)。
  8. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述防护部(2)具有轴向的开口(25)。
  9. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述开孔(21)的表面积之和为所述防护部(2)表面积的55％-96％。
  10. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)上设置有用于安装温度传感器的安装孔(16)。
  11. 根据权利要求1所述的一种具有保护功能的端子，其特征在于：所述端子本体(1)和所述防护部(2)是由板材切割或冲压或折弯成型。
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