WO2015096388A1 - 过热保护的usb接口 - Google Patents

过热保护的usb接口 Download PDF

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Publication number
WO2015096388A1
WO2015096388A1 PCT/CN2014/078727 CN2014078727W WO2015096388A1 WO 2015096388 A1 WO2015096388 A1 WO 2015096388A1 CN 2014078727 W CN2014078727 W CN 2014078727W WO 2015096388 A1 WO2015096388 A1 WO 2015096388A1
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WIPO (PCT)
Prior art keywords
electrical connection
connection terminal
terminal
ptc element
pin end
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PCT/CN2014/078727
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English (en)
French (fr)
Inventor
李渠陵
王俊
李鹏
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好利来（中国）电子科技股份有限公司
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Publication of WO2015096388A1 publication Critical patent/WO2015096388A1/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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter

Definitions

  • the present invention relates to the field of electronic products, and in particular to a USB interface for overheat protection.
  • USB data cable the main data transmission and charging tool.
  • the charging current of the electronic device becomes larger, the number of hot plugging times increases, and the probability that the USB data line is heated and the electronic device is burned out becomes large.
  • there is no protection device installed in the existing USB data cable which causes the failure of the USB data cable and the electronic device to be burned, posing a threat to personal and property security.
  • the invention relates to a superheat protection USB interface, which comprises a base, an electrical connection terminal and a PTC component; the electrical connection terminal is installed in the base, and the PTC component is mounted in series on the electrical connection terminal.
  • the electrical connection terminal includes a first electrical connection terminal and a second electrical connection terminal; the second electrical connection terminal is composed of a pin end and a terminal; the first electrical connection terminal sinks in the middle to form a platform; a pin end of the second electrical connection terminal sinks to form a platform; the bottom of the PTC element is located on a platform at a middle portion of the first electrical connection terminal and a pin end platform of the second electrical connection terminal; The terminal of the second electrical connection terminal is fixedly connected to the top surface of the PTC element to form an electrical connection.
  • the electrical connection terminal includes a first electrical connection terminal and a second electrical connection terminal; the second electrical connection terminal is formed by a pin end and a terminal; a gap is left between the pin end and the terminal; the PTC The component is fixedly inserted in the gap, and the end of the pin end is electrically connected with the PTC component
  • the pin tail is an elastic structure.
  • the PTC element is mounted in series on the electrical connection terminal of the USB interface which is directly connected to the electronic device.
  • the PTC element triggers a sharp drop in the current in the circuit, forcing the interface temperature to decrease, and finally acts as an overheat protection. Therefore, the present invention is safe and reliable. advantage.
  • Figure 1 is a block diagram of the circuit of the present invention
  • Figure 2A is a perspective view of a first embodiment of the present invention
  • Figure 2B is a perspective view of the terminal of the first embodiment of the present invention.
  • FIG. 2C is a perspective view of a first embodiment of the present invention with a pin end and a first electrical connection terminal coated with an insulating layer;
  • Figure 2D is a perspective view of a PTC component of the first embodiment of the present invention.
  • Figure 3A is a perspective view of a second embodiment of the present invention.
  • Figure 3B is a perspective view of the base of the second embodiment of the present invention.
  • Figure 3C is a perspective view of the terminal of the second embodiment of the present invention.
  • Figure 3D is a perspective view of a PTC element of a second embodiment of the present invention.
  • Figure 3E is a composite structural view of a PTC element of a second embodiment of the present invention.
  • Figure 4A is a perspective view of a third embodiment of the present invention.
  • Figure 4B is a perspective view of a third embodiment of the present invention with a pin end and a second electrical connection terminal;
  • Figure 4C is a perspective view of the pin end of the third embodiment of the present invention.
  • Fig. 4D is a perspective view of a PTC element of a third embodiment of the present invention.
  • the present invention is a USB interface for overheat protection, which includes an interface A10, an interface B20, and an electrical connection line 30.
  • the interface A10 and the interface B20 are connected by an electrical connection line 30; the PTC element 40 is mounted in series in the interface A10 or the interface B20.
  • the structure of the interface A or the interface B is basically the same.
  • the interface B20 is taken as an example for description.
  • the interface B20 includes a base 1, a card spring 2, an electrical connection terminal 3, and a PTC element 4; the electrical connection terminal 3 is composed of a first electrical connection terminal 31 and a second electrical connection terminal. 32, the first electrical connection terminal 31 and the second electrical connection terminal 32 are mounted on the base at intervals.
  • the second electrical connection terminal 32 is composed of a pin end 321 and a terminal 322.
  • the first electrical connection terminal 31 is sunk in the middle to form a platform 311; the pin end 321 of the second electrical connection terminal 32 is sunk to form a platform 323; the bottom of the PTC component 4 is located at the bottom A platform 311 in the middle of the electrical connection terminal 31 and a pin end 321 of the second electrical connection terminal 32 are on the tail platform 323; the terminal 322 of the second electrical connection terminal 32 is fixedly connected to the top surface of the PTC element 4 to form an electrical connection.
  • the pin end 321 and the first electrical connection terminal 31 are mounted in the pre-made USB interface base 1.
  • the platform 311 of the first electrical connection terminal 31 can be coated with an insulating layer J1 to form a base (as shown in FIG. 2C).
  • the PTC element 4 shown in FIG. 2D
  • the PTC element 4 whose surface portion is coated with the insulating layer J2 is placed on the platform 323 of the pin end 321 on the above-mentioned base 1 and the platform 311 of the first electrical connection terminal 31 to ensure the PTC element 4
  • the insulated portion is in contact with the first electrical connection terminal 31.
  • the PTC element 4 (not shown in Fig. 2D) which is not coated with an insulating layer may be placed on the stage 323 of the pin end 321 of the base 1 and the platform 311 of the first electrical connection end 31 which is also coated with the insulating layer J1. .
  • the terminal 322 (shown in FIG. 2B) is placed on the surface of the PTC component 4 in the portion of the uncoated layer J2, and the terminal 322, the PTC component 4, and the pin terminal 321 are soldered to form the present case.
  • the interface B20' includes a base 1', a snap spring 2', an electrical connection terminal 3', and a PTC element 4'.
  • the electrical connection terminal 3' is composed of a first electrical connection terminal 31' and a second electrical connection terminal 32', and the first electrical connection terminal 31' and the second electrical connection terminal 32' are spaced apart from each other on the base 1'.
  • the second electrical connection terminal 32' is composed of a pin end 321' and a terminal 322'.
  • a recess 11' is defined in the base 1'; the PTC element 4' is fixedly inserted into the recess 11' of the base 1', and the end of the pin end 321' is an elastic piece 323'.
  • the first electrical connection terminal 31' is spaced apart from the outer end of the base 1', the bottom of the terminal 322' is fixed to the top surface of the PTC element 4', and the bottom surface of the PTC element 4' is located at the end of the pin end 321'. on.
  • the pin end 321' and the first electrical connection terminal 31' are mounted in the base 1' of the USB interface prepared in advance, wherein the end of the pin end 321' is a spring structure 323' (as shown in FIG. 3B).
  • the PTC component 4' (shown in Figure 3D) is then soldered to the terminal 322' (shown in Figure 3C) to form a PTC composite structure (as shown in Figure 3E).
  • the PTC composite member is mounted on the elastic piece 323' at the end of the pin end 321' to form the present case.
  • the interface B20' includes a base 1', a snap spring 2', an electrical connection terminal 3' and a PTC element 4'.
  • the electrical connection terminal 3' is composed of a first electrical connection terminal 31' and a second electrical connection terminal 32', and the first electrical connection terminal 31' and the second electrical connection terminal 32' are spaced apart from each other on the base 1'.
  • the first electrical connection terminal 31' is composed of a pin end 311' and a terminal 312'.
  • a recess 11' is provided on the base 1' (as shown in FIG. 4B); the PTC element 4' is fixedly inserted into the recess 11' of the base 1', and the pin end 311' is mounted on the PTC element.
  • the inside of 4' is flanked by PTC element 4', the terminal 312' is mounted on the outside of PTC element 4', and the inner end of terminal 312' is L-shaped and is contiguous with PTC element 4'.
  • the second electrical connection terminal 32' and the pin end 311' are mounted on the base 1', and the terminal 312' (shown in FIG. 4C) is fixed to the rear portion of the base 1' and its front end and the pin end 311. 'Respectively, a gap is left between the terminal 312' and the pin end 311' to form a space in which the PTC element 4' is inserted, and then the PTC element 4' (as shown in FIG. 4D) is placed on the pin end 311' and In the gap between the terminals 312', the present case is formed.
  • the main point of the present invention is that the PTC component is mounted in series in the USB interface to function as an overheat protection.

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  • Thermistors And Varistors (AREA)

Abstract

一种过热保护的USB接口，包括底座（1）、电连接端子（3）和PTC元件（4），PTC元件串联安装在电连接端子上，当因接触不良或其它故障引起USB接口温度升高时，PTC元件触发使得电路中的电流急剧下降，接口温度降低，从而起到过热保护的作用。该过热保护的USB接口具有安全可靠的优点。

Description

过热保护的USB接口 技术领域
本发明涉及一种电子产品领域，特别是涉及一种过热保护的USB接口。
背景技术
随着USB接口的各种外部电子设备的增多，以及USB充电器的普及，越来越多的电子设备都会用到数据线，这样使得USB数据线成为主要的数据传输和充电工具。在USB充电设备技术方面，由于电子设备充电电流的变大，热插拔次数的越来越多，使得USB数据线出现发热故障导致电子设备烧毁的概率会变大。但是现有USB数据线中都没有安装保护装置，由此存在USB数据线和电子设备烧毁的故障，对人身财产安全造成威胁。
发明内容
本发明的目的在于提供一种安全可靠的过热保护的USB接口。
为实现上述目的，本发明的技术解决方案是：
本发明是一种过热保护USB接口，它包括底座、电连接端子、PTC元件；所述的电连接端子安装在底座中，在电连接端子上串联安装PTC元件。
所述电连接端子包括第一电连接端子和第二电连接端子；所述第二电连接端子由插针端和接线端组成；所述的第一电连接端子中部下沉，形成一个平台；所述第二电连接端子的插针端尾部下沉而形成一平台;所述的PTC元件底部坐落在第一电连接端子中部的平台和第二电连接端子的插针端尾部平台上；所述第二电连接端子的接线端与PTC元件顶面固定构成电连接。
所述电连接端子包括第一电连接端子和第二电连接端子；所述第二电连接端子由插针端和接线端构成；所述插针端与接线端中间保留一间隙；所述PTC元件固定插接在间隙中，插针端尾部与PTC元件顶接构成电连接
所述插针尾部为弹性结构。
采用上述方案后，由于本发明在现有与电子设备直接连接的USB接口的电连接端子上串联安装PTC元件。当因接触不良或其他故障引起的USB数据线接口温度升高时，PTC元件触发使得电路中的电流急剧下降，迫使接口温度降低，最终起到过热保护的作用，故，本发明具有安全可靠的优点。
下面结合附图和具体实施例对本发明作进一步的说明。
附图说明
图1是本发明电路原理框图；
图2A是本发明第一个实施例的轴测图；
图2B是本发明第一个实施例接线端的轴测图；
图2C是本发明第一个实施例装有插针端和涂有绝缘层第一电连接端子的轴测图；
图2D是本发明第一个实施例PTC元件的轴测图；
图3A是本发明第二个实施例的轴测图；
图3B是本发明第二个实施例底座的轴测图；
图3C是本发明第二个实施例接线端的轴测图；
图3D是本发明第二个实施例PTC元件的轴测图；
图3E是本发明第二个实施例PTC元件的复合结构图；
图4A是本发明第三个实施例的轴测图；
图4B是本发明第三个实施例装有插针端和第二电连接端子的轴测图；
图4C是本发明第三个实施例插针端的轴测图；
图4D是本发明第三个实施例PTC元件的轴测图。
具体实施方式
如图1所示，本发明是一种过热保护的USB接口，它包括接口A10、接口B20和电连接线30。所述的接口A10与接口B20通过电连接线30连接；在接口A10或接口B20中串联安装PTC元件40。
所述的接口A或接口B结构基本相同，现以接口B20为例加以说明。
实施例1：
如图2A、2C所示，所述的接口B20包括底座1、卡簧2、电连接端子3和PTC元件4；所述的电连接端子3由第一电连接端子31和第二电连接端子32构成，该第一电连接端子31和第二电连接端子32间隔安装在底座上。所述第二电连接端子32由插针端321和接线端322组成。所述的第一电连接端子31中部下沉，形成一个平台311；所述第二电连接端子32的插针端321尾部下沉而形成一平台323;所述的PTC元件4底部坐落在第一电连接端子31中部的平台311和第二电连接端子32的插针端321尾部平台323上；所述第二电连接端子32的接线端322与PTC元件4顶面固定构成电连接。
本实施例的装配过程：
将插针端321，第一电连接端子31安装于预先做好的USB接口底座1中，第一电连接端子31的平台311可涂上绝缘层J1形成底座（如图2C所示）。安装时，保证插针端321的平台323和第一电连接端31的平台311对齐并处于同一水平面上。然后将表面部分涂有绝缘层J2的PTC元件4（如图2D所示）放置于上述底座1上的插针端321的平台323和第一电连接端子31的平台311上，保证PTC元件4有绝缘的部分与第一电连接端子31接触。另外，还可将未涂绝缘层的PTC元件4(如图2D所示)置于底座1的插针端321的平台323和也涂上绝缘层J1的第一电连接端31的平台311上。将接线端322（如图2B所示）放置于未涂绝缘层J2部分的PTC元件4表面，再将接线端322，PTC元件4，插针端321进行焊接，最终形成本案。
实施例2：
如图3A所示，所述接口B20'包括底座1'、卡簧2'、电连接端子3'和PTC元件4'。所述的电连接端子3'由第一电连接端子31'和第二电连接端子32'构成，该第一电连接端子31'和第二电连接端子32'间隔安装在底座1'上。
结合图3B所示，所述的第二电连接端子32'由插针端321'和接线端322'构成。在底座1'上设有一个凹槽11'；所述的PTC元件4'固定插接在底座1'凹槽11'内，所述的插针端321'尾端为弹性片323'，其与第一电连接端子31'间隔安装在底座1'外端，接线端322'的底部与PTC元件4'顶面固定，PTC元件4'底面坐落在插针端321'尾端的弹性片323'上。
本实施例安装过程：
将插针端321'，第一电连接端子31'安装于预先做好的USB接口的底座1'中，其中插针端321'末端为弹片结构323'（如图3B所示）。再将PTC元件4'（如图3D所示）与接线端322'（如图3C所示）焊接在一起，形成一PTC复合结构(如图3E所示)。最后将PTC复合构件安装在插针端321'尾端的弹性片323'上，最终形成本案。
实施例3：
如图4A-图4B所示，所述的接口B20'包括底座1'、卡簧2'，电连接端子3'和PTC元件4'。所述的电连接端子3'由第一电连接端子31'和第二电连接端子32'构成，该第一电连接端子31'和第二电连接端子32'间隔安装在底座1'上。
所述的第一电连接端子31'由插针端311'和接线端312'构成。在底座1'上设有一个凹槽11'（如图4B所示）；所述的PTC元件4'固定插接在底座1'的凹槽11'内，插针端311'安装在PTC元件4'的内侧且其与PTC元件4'顶接，接线端312'安装在PTC元件4'的外侧,接线端312'内端呈L形且与PTC元件4'顶接。
本实施例安装过程：
将第二电连接端子32'和插针端311'安装于底座1'上，再将接线端312'（如图4C所示）固定于底座1'后部上且其前端与插针端311'相对，使得接线端312'和插针端311'之间留一定间隙，形成PTC元件4'插入的空间，再将PTC元件4'（如图4D所示）放置于插针端311'与接线端312'之间的间隙中，便形成本案。
本发明的重点就在于：在USB接口中串联安装PTC元件，起到过热保护的作用。
以上所述，仅为本发明较佳实施例而已，上述各电连接端子不仅仅局限于图中所示结构，可用金属做成的针、片、导线等结构或他们的复合连接结构，故不能以此限定本发明实施的范围，即依本发明申请专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明专利涵盖的范围内。

Claims (4)

1、一种过热保护USB接口，其特征在于：它包括底座、电连接端子、PTC元件；所述的电连接端子安装在底座中，在电连接端子上串联安装PTC元件。
2、根据权利要求1所述的过热保护的USB接口，其特征在于：所述电连接端子包括第一电连接端子和第二电连接端子；所述第二电连接端子由插针端和接线端组成；所述的第一电连接端子中部下沉，形成一个平台；所述第二电连接端子的插针端尾部下沉而形成一平台;所述的PTC元件底部坐落在第一电连接端子中部的平台和第二电连接端子的插针端尾部平台上；所述第二电连接端子的接线端与PTC元件顶面固定构成电连接。
3、根据权利要求1所述的过热保护的USB接口，其特征在于：所述电连接端子包括第一电连接端子和第二电连接端子；所述第二电连接端子由插针端和接线端构成；所述插针端与接线端中间保留一间隙；所述PTC元件固定插接在间隙中，插针端尾部与PTC元件顶接构成电连接。
4、根据权利要求2所述的过热保护的USB接口，其特征在于：所述插针尾部为弹性结构。
PCT/CN2014/078727 2013-12-27 2014-05-29 过热保护的usb接口 WO2015096388A1 (zh)

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