WO2021098160A1 - 一种连接器及电子设备 - Google Patents

一种连接器及电子设备 Download PDF

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Publication number
WO2021098160A1
WO2021098160A1 PCT/CN2020/089058 CN2020089058W WO2021098160A1 WO 2021098160 A1 WO2021098160 A1 WO 2021098160A1 CN 2020089058 W CN2020089058 W CN 2020089058W WO 2021098160 A1 WO2021098160 A1 WO 2021098160A1
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WO
WIPO (PCT)
Prior art keywords
elastic arm
connector
elastic
shielding plate
contact portion
Prior art date
Application number
PCT/CN2020/089058
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English (en)
French (fr)
Inventor
陈军
欧正言
邱双
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20890623.0A priority Critical patent/EP4050738B1/en
Publication of WO2021098160A1 publication Critical patent/WO2021098160A1/zh
Priority to US17/749,693 priority patent/US20220278490A1/en

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    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6586—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules

Definitions

  • This application relates to the technical field of electronic equipment, and in particular to a connector and electronic equipment.
  • High-speed connectors are widely used in information and communication technology. They are commonly used in large-scale communication equipment, ultra-high-performance servers and supercomputers, industrial computers, and high-end storage devices. Their main function is to connect single boards and backplanes, and High-speed differential signals or single-ended signals and large currents are transferred between them. With the continuous improvement of communication technology, the requirements for data transmission rate and transmission quality are getting higher and higher. At present, the existing high-speed connectors are limited by the structure of the ground shielding plate, and the crosstalk between signals is more serious, which affects the data transmission. Speed and transmission quality.
  • the present application provides a connector and electronic equipment to improve the crosstalk phenomenon between signals and optimize the signal transmission performance of the connector.
  • the present application provides a connector that includes a base, a plurality of terminal modules and a ground shield, wherein the plurality of terminal modules are arranged in parallel on the base along a first direction, and can be used to transmit high-speed Differential signal or single-ended signal and transfer large current; the ground shielding plate is arranged between two adjacent terminal modules to shield interference signals for the corresponding terminal modules.
  • the ground shielding plate includes a main body and at least two elastic elements arranged on the main body.
  • Each elastic element includes a first elastic arm, a second elastic arm and a contact part, wherein the first end of the first elastic arm and The first end of the second elastic arm is respectively connected with the main body, the second end of the first elastic arm and the second end of the second elastic arm are respectively connected with the contact part, and the contact part is offset in the first direction relative to the main body when installed , So that when the connector is plugged into the mating connector, the contact portion can elastically abut against the ground shielding plate of the mating connector, thereby ensuring the reliability of the electrical connection between the two.
  • the first elastic arm and the second elastic arm may be formed as two signal return paths connecting the contact part and the body, each The extension plate can be provided with at least two of the above-mentioned elastic elements.
  • at least four signal return paths can be formed between the ground shielding plate of the connector of the embodiment of the present application and the ground shielding plate of the mating connector, so the loop inductance can be reduced. Improve the resonance phenomenon of crosstalk signals and optimize the signal transmission performance of the connector.
  • the first elastic arm and the second elastic arm When the first elastic arm and the second elastic arm are arranged, the first elastic arm is arranged obliquely toward the first direction with respect to the main body, and the second elastic arm is obliquely arranged toward the first direction with respect to the main body In this way, when the contact portion is formed, by connecting the contact portion with the second end of the first elastic arm and the second end of the second elastic arm respectively, the contact portion can be simply and easily biased toward the first direction.
  • the connector and the mating connector can be inserted in the second direction.
  • at least two elastic elements can be arranged on the body along the second direction.
  • the contact part When the contact part is formed, the second end of the first elastic arm intersects the second end of the second elastic arm, and the contact part is set at the intersection position of the second end of the first elastic arm and the second end of the second elastic arm.
  • the first protrusion can keep a certain distance between the ground shielding plate of the mating connector and the extension plate, avoiding the ground shielding of the mating connector The plate is inserted into the gap between the elastic element and the body.
  • a second protrusion is provided at the intersection of the second end of the first elastic arm and the second end of the second elastic arm, and the second protrusion faces the first The direction is convex, and the top of the second protrusion forms the contact portion.
  • the surface shape of the second protrusion may be round, arc, or arched, etc., to guide the movement of the ground shielding plate of the mating connector, and make the mating process of the mating connector smoother.
  • the elastic element further includes a third elastic arm, and the third elastic arm is respectively connected to the second end of the first elastic arm and the second end of the second elastic arm A third protrusion protruding toward the first direction is provided on the third elastic arm, and the top of the third protrusion forms the contact portion.
  • the surface shape of the third protrusion can also be round, arc, or arched, to guide the movement of the ground shielding plate of the mating connector, and make the mating process of the mating connector smoother.
  • the body is provided with a gap, and at least two of the elastic elements are arranged in the gap.
  • the first end of the first elastic arm and the first end of the second elastic arm are formed with openings; when the body is provided with a gap, two adjacent elastic elements Wherein, the direction of the opening of one of the elastic elements is opposite to the direction of the opening of the other elastic element, so that the cross-sectional area of the notch opened on the body can be reduced, and the structural reliability of the ground shielding plate can be improved.
  • the present application also provides an electronic device, the electronic device includes the connector in any possible implementation of the above-mentioned first aspect, the connector can be used to transfer between the circuit board of the electronic device and other functional modules Signal to improve crosstalk between signals and optimize signal transmission performance.
  • Figure 1 is a crosstalk curve diagram of a prior art connector
  • Figure 2 is a schematic structural diagram of a connector according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of the structure of an extension plate according to an embodiment of the application.
  • FIG. 4 is a schematic diagram of the connection state of the extension board and the ground shielding plate of the mating connector in FIG. 3;
  • FIG. 5 is a schematic structural diagram of an extension plate according to another embodiment of the application.
  • FIG. 6 is a schematic structural diagram of an extension plate according to another embodiment of the application.
  • Fig. 7 is a crosstalk curve diagram of the connector of the embodiment of the present application.
  • the connector can be used in electronic equipment to transmit high-speed differential signals or single-ended signals and to transmit large currents.
  • the electronic equipment can be communication equipment, servers, supercomputers or routers, switches and other equipment in the prior art.
  • the requirements for data transmission rate and transmission quality are getting higher and higher, which requires further reduction of crosstalk between signals.
  • the ground shielding plates of two mating connectors are usually only connected by a single elastic arm to achieve a single-point contact connection, which makes the signal return path more inductive and prone to high-frequency signal resonance.
  • Figure 1 is the crosstalk curve diagram of the prior art connector.
  • the embodiment of the present application provides a connector, the grounding shielding plate of the connector has at least two contact parts and at least four elastic arms, so when the mating connector is plugged and interconnected, the grounding shielding plate and The ground shielding plate of the mating connector can be electrically connected in at least two positions and generate at least four signal return paths, so the loop inductance can be reduced, the crosstalk phenomenon between signals can be improved, and the signal transmission performance of the connector can be optimized.
  • the connector provided by the embodiment of the present application includes a base 100 and a plurality of terminal modules 110.
  • the plurality of terminal modules 110 are arranged in parallel on the base 100 along a first direction (ie, the H direction).
  • the terminal module 110 includes an insulator 111 and a plurality of signal terminals 112 penetrating the insulator.
  • the signal terminals 112 may be single-ended signal terminals or differential signal terminals arranged in pairs. The two ends of the signal terminal 112 respectively extend beyond the two end faces of the insulator 111 to realize the connection with the circuit board and the mating connector.
  • one end of the signal terminal 112 extends beyond the first end surface of the insulator 111, and a first connection terminal (not shown in the figure) for electrical connection with the circuit board is provided at this end, and the other end of the signal terminal 112 extends beyond the insulator 111.
  • the second end surface of 111 is provided with a second connection terminal 113 for electrical connection with the terminal module of the mating connector.
  • the terminal modules 110 may also be arranged in parallel on the base 100 along the M direction.
  • the first direction is the M direction; or, in other embodiments of the present application, A plurality of terminal modules 110 may be arranged in parallel on the base 100 in both the M direction and the H direction, which is not limited in this application.
  • the connector further includes a plurality of ground shielding plates 10, the plurality of grounding shielding plates 10 are also arranged on the base 100, and each of the grounding shielding plates 10 is located between two adjacent terminal modules 110. Between the second connecting terminals 113, they are used to shield the multiple terminal modules 110 from electromagnetic or radio frequency interference signals.
  • the terminal module of the mating connector is the same as the terminal of the connector of the embodiment of the present application.
  • the module is correspondingly plugged in, and the ground shielding plate 20 of the mating connector is located on the side of the corresponding grounding shielding plate 10 facing the first direction in the embodiment of the present application, that is, the mating connector is plugged into the connector of the embodiment of the present application After that, the ground shielding plates of the two connectors are in a superimposed connection state.
  • the grounding shielding plate 10 When specifically setting the ground shielding plate, referring to Figures 3 and 4, the grounding shielding plate 10 includes a main body 11 and an elastic element 12 provided on the main body 11.
  • the elastic element 12 includes a first elastic arm 13, a second elastic arm 14, and The contact portion 15, wherein the first end of the first elastic arm 13 and the first end of the second elastic arm 14 are respectively connected to the body 11, the second end of the first elastic arm 13 and the second end of the second elastic arm 14 They are respectively connected to the contact portion 15, which is the part of the ground shield plate 10 that is electrically connected to the ground shield plate 20 of the mating connector.
  • the contact portion 15 is biased toward the first direction (ie, the H direction) relative to the body 11, so that when the connector and the mating connector are inserted in the second direction (ie, the L direction), the contact portion 15 can be connected to the mating connector.
  • the ground shielding plate 20 of the connector elastically abuts, so as to ensure the reliability of the electrical connection between the two.
  • each ground shielding plate 10 can be provided with at least two of the above-mentioned elastic elements 12, so that the ground shielding plate of the connector of the embodiment of the present application can be connected to the mating
  • At least four signal return paths are formed between the ground shielding plates 20 of the connector, which can not only increase the ground path and provide a more uniform ground distribution, but also reduce the loop inductance, improve the resonance phenomenon of crosstalk signals, and optimize the signal transmission performance of the connector.
  • the main body 11 of the ground shielding plate 10 is provided with a notch 16.
  • the elastic element 12 can be arranged in the notch 16.
  • the above-mentioned elastic element 12 can be arranged in the notch 16.
  • At least two elastic elements 12 can be arranged in the notch 16 along the second direction.
  • the connector and the mating connector in the embodiment of the present application are along the second direction
  • the elastic element 12 on the ground shielding plate 10 that is far away from the base suppose its contact portion 15 (that is, the part on the ground shielding plate 10 that first contacts the ground shielding plate 20 of the mating connector) and the mating connector
  • the scheme of the embodiment of this application can be used to reduce The length L 0 of the electric stub generated by the end of the ground shielding plate 20 of the mating connector is reduced, thereby helping to further improve the resonance phenomenon of the crosstalk signal and optimize the signal transmission performance of the connector.
  • the first elastic arm 13 and the second elastic arm 14 when the first elastic arm 13 and the second elastic arm 14 are set, the first elastic arm 13 and the second elastic arm 14 can be arranged obliquely toward the first direction, that is, the first elastic arm The second end of the arm 13 and the second end of the second elastic arm 14 are also respectively biased toward the first direction. In this way, when the contact portion 15 is formed, the contact portion 15 is connected to the second end of the first elastic arm 13 respectively. Connecting to the second end of the second elastic arm 14 can simply and easily bias the contact portion 15 toward the first direction.
  • FIG. 3 a schematic structural diagram of the ground shielding plate 10 in an embodiment of the present application is shown.
  • the first end of the first elastic arm 13 and the first end of the second elastic arm 14 are formed with an opening 121
  • the second end of the first elastic arm 13 intersects with the second end of the second elastic arm 14.
  • the elastic element 12 has a "V"-shaped structure, and the contact portion 15 is set on the second end of the first elastic arm 13. The intersection with the second end of the second elastic arm 14.
  • the opening 121 of one elastic element 12 and the opening 121 of the other elastic element 12 face the opposite direction.
  • the ground shielding plate 10 includes two elastic elements 12,
  • the two elastic elements 12 can be arranged in the notch with reference to the manner shown in FIG. 3. In this way, the cross-sectional area of the notch 16 opened on the main body 11 can be reduced, and the structural reliability of the ground shielding plate 10 can be improved.
  • the two elastic elements can also be arranged in the gap with the same orientation of the opening, or arranged in the gap with the orientation of the opening at a certain angle. Go into details again.
  • FIG. 3 only exemplarily shows the structure when the ground shielding plate 10 includes two elastic elements 12. In other embodiments of the present application, when the number of elastic elements 12 is more than two Alternatively, referring to the manner shown in FIG. 3, a plurality of elastic elements 12 with opposite openings 121 are arranged in a staggered manner in the notch 16, which will not be repeated here.
  • a first protrusion 17 is further provided on the end of the main body 11 away from the base, and the first protrusion 17 protrudes toward the first direction.
  • the ground shielding plate 20 of the mating connector will pass through the first protrusion 17 before contacting the elastic element 12.
  • the first protrusion 17 can be used to shield the ground of the mating connector A certain distance is maintained between the plate 20 and the ground shielding plate 10. It can be understood that the distance is the height of the first protrusion 17, and the ground shield of the mating connector can be avoided by properly designing the height value of the first protrusion 17
  • the plate 20 is inserted into the gap 161 between the elastic element 12 and the ground shielding plate to guide the movement of the ground shielding plate 20 of the mating connector, so that the connector of the embodiment of the present application can be smoothly mated with the mating connector.
  • the specific shape of the first protrusion 17 is not limited.
  • it can be designed as a strip-shaped structure as shown in FIGS. 3 and 4.
  • the first protrusion 17 may be arranged along the edge of the notch 16 or along the body 11.
  • the surface of the first protrusion 17 can also be designed as an arc or semicircular structure. In this way, when the connector of the embodiment of the present application is plugged into the mating connector, even if the ground shielding plate The initial distance between 10 and the ground shielding plate 20 of the mating connector is smaller than the height of the first protrusion 17.
  • the guiding effect of the arc or semicircular surface of 17 can also make the end of the ground shielding plate 20 of the mating connector tilt toward the side away from the ground shielding plate 10, so that the ground shielding plate 20 of the mating connector faces the whole
  • the side away from the ground shielding plate 20 is offset, so that the connector of the embodiment of the present application can be smoothly mated with the mating connector.
  • the height value of the first protrusion 17 may not be greater than the offset distance of the contact portion 15 relative to the body 11, so that when the connector of the present application is inserted into the mating connector After being in place, the contact portion 15 can still maintain an elastic contact state with the ground shielding plate 20 of the mating connector, thereby improving the connection reliability of the two connectors.
  • a second protrusion 18 is provided at the intersection of the second end of the first elastic arm 13 and the second end of the second elastic arm. Similarly, the second The protrusion 18 also protrudes toward the first direction. At this time, the top of the second protrusion 18 forms the contact portion 15 in this embodiment.
  • the offset distance of the second end of the first elastic arm 13/the second elastic arm 14 relative to the main body 11 can be relatively small to avoid The ground shielding plate of the mating connector is inserted into the gap 161 between the elastic element 12 and the body.
  • the second protrusion 18 at the intersection of the second end of the first elastic arm 13 and the second end of the second elastic arm 14, and using the top of the second protrusion 18 to form the contact portion 15, on the one hand, Improve the reliability of the contact between the ground shielding plate 10 and the ground shielding plate of the mating connector.
  • the surface of the second protrusion 18 when the surface of the second protrusion 18 is designed as a round, arc, or arched structure, it can also be a mating connection The movement of the ground shielding plate of the connector is guided to make the mating connector insertion process more smooth.
  • FIG. 6 is a schematic structural diagram of a ground shielding plate according to another embodiment of the application.
  • the elastic element 12 further includes a third elastic arm 19, and the third elastic arm 19 is connected to the first elastic arm.
  • a third protrusion 191 protruding toward the first direction is provided on the third elastic arm 19, and the top of the third protrusion 191 is now It is formed as the contact portion 15 in this embodiment.
  • the offset distance of the second end of the first elastic arm 13/the second elastic arm 14 relative to the body 11 can be relatively small to avoid mating connection.
  • the grounding shield of the device is inserted into the gap 161 formed between the elastic element 12 and the edge of the notch 16.
  • the ground shielding of the ground shielding plate 10 and the mating connector can also be improved.
  • the contact reliability of the board in addition, when designing the third protrusion 191, the surface of the third protrusion 191 can also be designed as a round, arc, or arched structure, so that the ground shielding plate of the mating connector can move Conduct guidance to make the mating process of the mating connector smoother.
  • Figure 7 is a crosstalk curve diagram after using the connector provided by the embodiment of the present application. It can be seen that in the embodiment of the present application, the ground shielding plate of the connector and the grounding shielding plate of the mating connector Electrically connect at least two locations and generate at least four signal return paths, which can reduce loop inductance, improve crosstalk between signals, and increase the crosstalk resonance frequency of the connector from 14GHz to 24GHz, so that the connector can support 56Gbps and The above higher rate data transmission.
  • the embodiment of the present application also provides an electronic device using the connector in the above-mentioned embodiment.
  • the electronic device may be a communication device, server, supercomputer, router, switch, etc. in the prior art.
  • the connector provided in can be used to transmit signals between the circuit board of an electronic device and other functional modules to improve crosstalk between signals and optimize signal transmission performance.

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Abstract

本申请提供了一种连接器及电子设备，用以改善信号间的串扰现象，优化连接器的信号传输性能。连接器包括基座以及设置于基座上的多个端子模块和接地屏蔽板，多个端子模块沿第一方向并列设置，接地屏蔽板设置于相邻的两个端子模块之间，接地屏蔽板包括本体以及设置于本体上的至少两个弹性元件，每个弹性元件包括第一弹臂、第二弹臂以及接触部，第一弹臂的第一端以及第二弹臂的第一端分别与本体连接，第一弹臂的第二端以及第二弹臂的第二端分别与接触部连接；接触部相对本体朝向第一方向偏置，用于与配对连接器的接地屏蔽板电连接。

Description

一种连接器及电子设备
相关申请的交叉引用
本申请要求在2019年11月22日提交中国专利局、申请号为201922037802.0、申请名称为“一种连接器及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备技术领域，尤其涉及到一种连接器及电子设备。
背景技术
高速连接器广泛应用于信息和通信技术，是大型通讯设备、超高性能服务器和巨型计算机、工业计算机、高端存储设备中常用的一类连接器，其主要作用是连接单板和背板，并在其间传递高速差分信号或单端信号以及传递大电流。随着通信技术的不断提高，对于数据传输速率和传输质量的要求也越来越高，目前已有的高速连接器由于接地屏蔽板的结构限制，信号之间的串扰较为严重，影响数据的传输速率和传输质量。
发明内容
本申请提供了一种连接器及电子设备，用以改善信号间的串扰现象，优化连接器的信号传输性能。
第一方面，本申请提供了一种连接器，该连接器包括基座以及多个端子模块和接地屏蔽片，其中，多个端子模块沿第一方向并列设置于基座上，可用于传递高速差分信号或单端信号以及传递大电流；接地屏蔽板设置于相邻的两个端子模块之间，用以为相应的端子模块屏蔽干扰信号。具体设置时，接地屏蔽板包括本体以及设置于本体上的至少两个弹性元件，每个弹性元件包括第一弹臂、第二弹臂以及接触部，其中，第一弹臂的第一端和第二弹臂的第一端分别与本体连接，第一弹臂的第二端和第二弹臂的第二端分别与接触部连接，在设置时，接触部相对本体朝向第一方向偏置，以使得当连接器与配对连接器插接时，接触部能够与配对连接器的接地屏蔽板弹性抵接，从而保证两者之间的电连接可靠性。
在本申请实施例中，在接触部与配对连接器的接地屏蔽板电连接导通后，第一弹臂和第二弹臂可形成为连接接触部与本体的两条信号回流路径，每个延伸板可设置至少两个上述的弹性元件，这样，就可在本申请实施例连接器的接地屏蔽板与配对连接器的接地屏蔽板之间形成至少四条信号回流路径，因此可以降低回路电感，改善串扰信号的谐振现象，优化连接器的信号传输性能。
在设置第一弹臂和第二弹臂时，所述第一弹臂相对所述本体朝向所述第一方向倾斜设置，所述第二弹臂相对所述本体朝向所述第一方向倾斜设置，这样，在形成接触部时，通过将接触部分别与第一弹臂的第二端和第二弹臂的第二端连接，即可简单容易地使接触部朝向第一方向偏置。
在一个具体的实施方案中，连接器与配对连接器可沿第二方向插接，这样，至少两个 弹性元件可沿第二方向设置于本体上，当本申请实施例中连接器与配对连接器沿第二方向插接时，可以使得由配对连接器的接地屏蔽板的端部产生的电短截线的长度得以减小，从而有助于进一步改善串扰信号的谐振现象，优化连接器的信号传输性能。
在形成接触部时，第一弹臂的第二端与第二弹臂的第二端相交，接触部即设置于第一弹臂的第二端与第二弹臂的第二端的相交位置。
在一个具体的实施方案中，当所述连接器与所述配对连接器沿第二方向插接时，沿所述第二方向，所述接地屏蔽板的一端与所述基座连接，另一端设置有朝向所述第一方向凸出的第一凸起。采用该方案，当本申请实施例连接器与配对连接器插接时，利用第一凸起可以使配对连接器的接地屏蔽板与延伸板之间保持一定的间距，避免配对连接器的接地屏蔽板插入弹性元件与本体之间的缝隙内。
在另一个具体的实施方案中，所述第一弹臂的第二端与所述第二弹臂的第二端的相交位置设置有第二凸起，所述第二凸起朝向所述第一方向凸出，所述第二凸起的顶部形成所述接触部。利用该第二凸起的顶部形成接触部，可以提高延伸板与配对连接器的接地屏蔽板的接触可靠性。
具体设置时，第二凸起的表面形状可以为圆形、弧形或者拱形等形状，以为配对连接器的接地屏蔽板的移动进行导引，使配对连接器的插接过程更为顺利。
在另一个具体的实施方案中，所述弹性元件还包括第三弹臂，所述第三弹臂分别与所述第一弹臂的第二端与所述第二弹臂的第二端连接，所述第三弹臂上设置有朝向所述第一方向凸出的第三凸起，所述第三凸起的顶部形成所述接触部。利用该第三凸起的顶部形成接触部，可以提高延伸板与配对连接器的接地屏蔽板的接触可靠性。
类似地，第三凸起的表面形状也可以为圆形、弧形或者拱形等形状，以为配对连接器的接地屏蔽板的移动进行导引，使配对连接器的插接过程更为顺利。
在一个具体的实施方案中，所述本体上开设有缺口，至少两个所述弹性元件设置于所述缺口内。
在一个具体的实施方案中，所述第一弹臂的第一端与所述第二弹臂的第一端形成有开口；当本体上开设有缺口时，相邻的两个所述弹性元件中，其中一个所述弹性元件的开口与另一个所述弹性元件的开口的朝向相反，这样可以减小本体上所开设的缺口的横截面积，提高接地屏蔽板的结构可靠性。
第二方面，本申请还提供了一种电子设备，该电子设备包括上述第一方面中任意可能的实施方案中的连接器，连接器可用于在电子设备的电路板与其它功能模块之间传递信号，以改善信号间的串扰现象，优化信号传输性能。
附图说明
图1为现有技术连接器的串扰曲线图；
图2为本申请实施例连接器的结构示意图；
图3为本申请一实施例延伸板的结构示意图；
图4为图3中延伸板与配对连接器的接地屏蔽板的连接状态示意图；
图5为本申请另一实施例延伸板的结构示意图；
图6为本申请又一实施例延伸板的结构示意图；
图7本申请实施例连接器的串扰曲线图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。
为了方便理解本申请实施例提供的连接器，下面首先说明一下其应用场景。该连接器可应用于电子设备中，用于传递高速差分信号或单端信号以及传递大电流，其中，电子设备可以为现有技术中的通讯设备、服务器、超级计算机或者路由器、交换机等设备。随着通信技术的不断提高，对于数据传输速率和传输质量的要求也越来越高，这样就要求进一步降低信号之间的串扰。现有技术中，相互配合的两个连接器的接地屏蔽板之间通常只通过单一弹臂实现单点接触连接，致使信号回流路径的感性较强，容易产生高频信号谐振，参考图1所示，图1为现有技术连接器的串扰曲线图，可以看出，近端串扰与远端串扰在14GHz就出现了谐振，谐振峰值可达到-23dB，严重影响连接器的信号传输能力，限制了连接器传输速率的进一步提高。基于此，本申请实施例提供了一种连接器，该连接器的接地屏蔽板具有至少两个接触部以及至少四条弹臂，因此在与配对连接器插接互连时，其接地屏蔽板与配对连接器的接地屏蔽板可在至少两个位置实现电性连接，并产生至少四条信号回流路径，因此可以降低回路电感，改善信号间的串扰现象，优化连接器的信号传输性能。
首先参考图2所示，本申请实施例提供的连接器包括基座100以及多个端子模块110，多个端子模块110沿第一方向(即H方向)并列设置于基座100上，每个端子模块110包括绝缘体111以及穿射于绝缘体内的多个信号端子112，这些信号端子112既可以为单端信号端子，也可以为成对设置的差分信号端子。信号端子112的两端分别超出绝缘体111的两个端面，以实现与电路板和配对连接器的连接。具体设置时，信号端子112的一端超出绝缘体111的第一端面，且在该端设置有用于与电路板电连接的第一连接端子(图中未示出)，信号端子112的另一端超出绝缘体111的第二端面，且在该端设置有用于与配对连接器的端子模块电连接的第二连接端子113。
需要说明的是，在本申请实施例中，端子模块110也可沿M方向并列设置在基座100上，此时，第一方向即为M方向；或者，在本申请的其它实施例中，基座100上可在M方向和H方向均并列设置有多个端子模块110，本申请对此不作限制。
在本申请实施例中，连接器还包括多个接地屏蔽板10，该多个接地屏蔽板10同样设置于基座100上，并且每一接地屏蔽板10位于相邻的两个端子模块110的第二连接端子113之间，用以为多个端子模块110屏蔽电磁或者射频等干扰信号。具体地，当本申请实施例连接器与配对连接器沿与第一方向正交设置的第二方向(即L方向)插接时，配对连接器的端子模块与本申请实施例连接器的端子模块对应插接，配对连接器的接地屏蔽板20位于本申请实施例中对应的接地屏蔽板10朝向第一方向的一侧，也就是说，配对连接器与本申请实施例的连接器插接后，两个连接器的接地屏蔽板呈叠置连接状态。
具体设置接地屏蔽板时，参考图3和图4所示，接地屏蔽板10包括本体11以及设置于本体11上的弹性元件12，弹性元件12包括第一弹臂13、第二弹臂14以及接触部15，其中，第一弹臂13的第一端和第二弹臂14的第一端分别与本体11连接，第一弹臂13的第二端和第二弹臂14的第二端分别与接触部15连接，该接触部15即为接地屏蔽板10上与配对连接器的接地屏蔽板20电性连接的部位。在设置时，接触部15相对本体11朝向第一方向(即H方向)偏置，以使得当连接器与配对连接器沿第二方向(即L方向)插接时， 接触部15能够与配对连接器的接地屏蔽板20弹性抵接，从而保证两者之间的电连接可靠性。
请继续参考图3和图4所示，在接触部15与配对连接器的接地屏蔽板20电连接导通后，第一弹臂13和第二弹臂14可形成为连接接触部15与本体11的两条信号回流路径，在本申请实施例中，每个接地屏蔽板10可设置至少两个上述的弹性元件12，这样，就可在本申请实施例连接器的接地屏蔽板与配对连接器的接地屏蔽板20之间形成至少四条信号回流路径，这样不仅可以增加接地路径，提供更均匀的接地分布，而且还可以降低回路电感，改善串扰信号的谐振现象，优化连接器的信号传输性能。
参考图3所示，接地屏蔽板10的本体11上开设有缺口16，在设置弹性元件12时，可以将上述弹性元件12设置于缺口16内。此外，请一并参考图3和图4所示，至少两个弹性元件12具体可以沿第二方向设置于缺口16内，这样，当本申请实施例中连接器与配对连接器沿第二方向插接时，对于接地屏蔽板10上远离基座设置的弹性元件12，假如其接触部15(即接地屏蔽板10上最先与配对连接器的接地屏蔽板20接触的部位)与配对连接器的接地屏蔽板20的端部的距离L为一设定值的话，相比于只设置一个弹性元件12或者多个弹性元件12采用其它排布方式的设计，采用本申请实施例方案，可以减小由配对连接器的接地屏蔽板20的端部产生的电短截线(electric stub)的长度L 0，从而有助于进一步改善串扰信号的谐振现象，优化连接器的信号传输性能。
在本申请实施例中，在设置第一弹臂13和第二弹臂14时，可以使第一弹臂13和第二弹臂14分别朝向第一方向倾斜设置，也就是说，第一弹臂13的第二端和第二弹臂14的第二端也分别朝向第一方向偏置，这样，在形成接触部15时，通过将接触部15分别与第一弹臂13的第二端和第二弹臂14的第二端连接，即可简单容易地使接触部15朝向第一方向偏置。
参考图3所示的本申请一实施例中接地屏蔽板10的结构示意图，在该实施例中，第一弹臂13的第一端与第二弹臂14的第一端形成有开口121，第一弹臂13的第二端与第二弹臂14的第二端相交，这时，弹性元件12呈“V”形结构，上述接触部15即设置于第一弹臂13的第二端与第二弹臂14的第二端的相交位置。在本实施例中，相邻的两个弹性元件12中，其中一个弹性元件12的开口121与另一个弹性元件12的开口121的朝向相反，当接地屏蔽板10包括两个弹性元件12时，两个弹性元件12可参考图3中所示的方式设置于缺口内，这样，可以减小本体11上所开设的缺口16的横截面积，提高接地屏蔽板10的结构可靠性。
可以理解的，在本申请的其它实施例中，两个弹性元件也可以采用开口的朝向相同的方式设置于缺口内，或者采用开口的朝向呈一定夹角的方式设置于缺口内，此处不再赘述。
另外需要说明的是，图3仅示例性地示出了接地屏蔽板10包含两个弹性元件12时的结构形式，在本申请的其它实施例中，当弹性元件12的数量为两个以上时，也可以参考图3中所示的方式，将多个开口121朝向相反的弹性元件12交错设置于缺口16内，此处不再赘述。
当本申请实施例连接器与配对连接器插接时，参考图2和图4所示，由于弹性臂倾斜设置的原因，若接地屏蔽板10与配对连接器的接地屏蔽板20之间的间距过于接近，那么配对连接器的接地屏蔽板20就有可能插入弹性元件12与本体之间的缝隙161内，从而造成卡滞，使两个连接器不能连接到位。基于此，在本申请的一个实施例中，本体11上远离 基座的一端还设置有第一凸起17，该第一凸起17朝向第一方向凸出，采用该方案，当本申请实施例连接器与配对连接器插接时，配对连接器的接地屏蔽板20会在接触弹性元件12之前先经过第一凸起17，利用该第一凸起17，可以使配对连接器的接地屏蔽板20与接地屏蔽板10之间保持一定的间距，可以理解的，该间距即为第一凸起17的高度，通过合理设计第一凸起17的高度值，可以避免配对连接器的接地屏蔽板20插入弹性元件12与接地屏蔽板之间的缝隙161内，以为配对连接器的接地屏蔽板20的移动进行导引，使本申请实施例连接器能够与配对连接器顺利配合插接。
其中，第一凸起17的具体形状不限，例如可以设计为图3和图4中所示的条形结构，这时，可以将第一凸起17沿缺口16的边缘设置或者沿本体11的边缘设置。另外，在本申请实施例中，还可以将第一凸起17的表面设计为弧形或者半圆形结构，这样，当本申请实施例连接器与配对连接器插接时，即使接地屏蔽板10与配对连接器的接地屏蔽板20的初始间距小于第一凸起17的高度，配对连接器的接地屏蔽板20的端部与第一凸起17可能会产生干涉时，利用第一凸起17的弧形或者半圆形表面的导向作用，也可以使配对连接器的接地屏蔽板20的端部朝向远离接地屏蔽板10的一侧倾斜，从而使配对连接器的接地屏蔽板20整体朝向远离接地屏蔽板20的一侧偏移，使本申请实施例连接器能够与配对连接器顺利配合插接。
在设置第一凸起17的高度值时，具体地，可以使第一凸起17的高度值不大于接触部15相对本体11的偏置距离，这样，当本申请连接器与配对连接器插接到位后，接触部15依然能够与配对连接器的接地屏蔽板20保持弹性抵接状态，从而提高两个连接器的连接可靠性。
参考图5所示，在本申请的另一实施例中，第一弹臂13的第二端与第二弹臂的第二端的相交位置设置有第二凸起18，类似地，该第二凸起18也朝向第一方向凸出，此时第二凸起18的顶部即形成为本实施例中的接触部15。本实施例中，在设计第一弹臂13和第二弹臂14时，可以使第一弹臂13/第二弹臂14的第二端相对本体11的偏置距离相对较小，以避免配对连接器的接地屏蔽板插入弹性元件12与本体之间的缝隙161内。此外，通过在第一弹臂13的第二端与第二弹臂14的第二端的相交位置设置第二凸起18，并利用该第二凸起18的顶部形成接触部15，一方面可以提高接地屏蔽板10与配对连接器的接地屏蔽板的接触可靠性，另一方面，当将第二凸起18的表面设计为圆形、弧形或者拱形等结构时，还可以为配对连接器的接地屏蔽板的移动进行导引，使配对连接器的插接过程更为顺利。
参考图6所示，图6为本申请另一实施例接地屏蔽板的结构示意图，在该实施例中，弹性元件12还包括第三弹臂19，第三弹臂19连接于第一弹臂13的第二端与第二弹臂14的第二端之间，该第三弹臂19上设置有朝向第一方向凸出的第三凸起191，此时第三凸起191的顶部即形成为本实施例中的接触部15。类似地，在设计第一弹臂13和第二弹臂14时，可以使第一弹臂13/第二弹臂14的第二端相对本体11的偏置距离相对较小，以避免配对连接器的接地屏蔽片插入弹性元件12与缺口16的边缘之间形成的缝隙161内。在本申请实施例中，通过在第三弹臂19上设置第三凸起191，并利用第三凸起191的顶部形成接触部15，还可以提高接地屏蔽板10与配对连接器的接地屏蔽板的接触可靠性；此外，在设计第三凸起191时，同样可以将第三凸起191的表面设计为圆形、弧形或者拱形等结构，以为配对连接器的接地屏蔽板的移动进行引导，使配对连接器的插接过程更为顺利。
参考图7所示，图7为使用本申请实施例提供的连接器后的串扰曲线图，可以看出，本申请实施例中，通过使连接器的接地屏蔽板与配对连接器的接地屏蔽板在至少两个位置电性连接，并产生至少四条信号回流路径，可以降低回路电感，改善信号间的串扰现象，将连接器的串扰谐振频点从14GHz提升到了24GHz，使得连接器可支持56Gbps及以上更高速率的数据传输。
本申请实施例还提供了一种使用上述实施例中的连接器的电子设备，该电子设备可以为现有技术中的通讯设备、服务器、超级计算机或者路由器、交换机等设备，其中，上述实施例中提供的连接器可用于在电子设备的电路板与其它功能模块之间传递信号，以改善信号间的串扰现象，优化信号传输性能。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (11)

  1. 一种连接器，包括基座以及设置于所述基座上的多个端子模块和接地屏蔽板，多个所述端子模块沿第一方向并列设置，所述接地屏蔽板设置于相邻的两个所述端子模块之间，其特征在于，
    所述接地屏蔽板包括本体以及设置于所述本体上的至少两个弹性元件，每个所述弹性元件包括第一弹臂、第二弹臂以及接触部，所述第一弹臂的第一端以及所述第二弹臂的第一端分别与所述本体连接，所述第一弹臂的第二端以及所述第二弹臂的第二端分别与所述接触部连接；所述接触部相对所述本体朝向所述第一方向偏置，用于与配对连接器的接地屏蔽板电连接。
  2. 如权利要求1所述的连接器，其特征在于，所述第一弹臂相对所述本体朝向所述第一方向倾斜设置，所述第二弹臂相对所述本体朝向所述第一方向倾斜设置。
  3. 如权利要求1所述的连接器，其特征在于，所述连接器与所述配对连接器沿第二方向插接，至少两个所述弹性元件沿所述第二方向设置于所述本体上。
  4. 如权利要求1～3任一项所述的连接器，其特征在于，所述第一弹臂的第二端与所述第二弹臂的第二端相交，所述接触部设置于所述第一弹臂的第二端与所述第二弹臂的第二端的相交位置。
  5. 如权利要求4所述的连接器，其特征在于，当所述连接器与所述配对连接器沿第二方向插接时，沿所述第二方向，所述接地屏蔽板的一端与所述基座连接，另一端设置有朝向所述第一方向凸出的第一凸起。
  6. 如权利要求5所述的连接器，其特征在于，所述第一凸起的高度不大于所述接触部相对所述本体的偏置距离。
  7. 如权利要求4所述的连接器，其特征在于，所述第一弹臂的第二端与所述第二弹臂的第二端的相交位置设置有第二凸起，所述第二凸起朝向所述第一方向凸出，所述第二凸起的顶部形成所述接触部。
  8. 如权利要求1～3任一项所述的连接器，其特征在于，所述弹性元件还包括第三弹臂，所述第三弹臂分别与所述第一弹臂的第二端与所述第二弹臂的第二端连接，所述第三弹臂上设置有朝向所述第一方向凸出的第三凸起，所述第三凸起的顶部形成所述接触部。
  9. 如权利要求1～8任一项所述的连接器，其特征在于，所述本体上开设有缺口，至少两个所述弹性元件设置于所述缺口内。
  10. 如权利要求9所述的连接器，其特征在于，所述第一弹臂的第一端与所述第二弹臂的第一端形成有开口；
    相邻的两个所述弹性元件中，其中一个所述弹性元件的开口与另一个所述弹性元件的开口的朝向相反。
  11. 一种电子设备，其特征在于，包括如权利要求1～10任一项所述的连接器。
PCT/CN2020/089058 2019-11-22 2020-05-07 一种连接器及电子设备 WO2021098160A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115840206A (zh) * 2021-12-14 2023-03-24 深圳市速腾聚创科技有限公司 激光接收装置及激光雷达

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113471777B (zh) * 2021-02-09 2022-07-29 中航光电科技股份有限公司 一种高速正交连接器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009170308A (ja) * 2008-01-17 2009-07-30 Japan Aviation Electronics Industry Ltd コネクタ
US9941641B1 (en) * 2017-06-01 2018-04-10 Amphenol East Asia Electronic Technology (Shen Zhen) Co., Ltd. Male connector
CN107994405A (zh) * 2017-11-17 2018-05-04 番禺得意精密电子工业有限公司 电连接器
CN108963667A (zh) * 2018-07-09 2018-12-07 肯上科技股份有限公司 高频连接器接地结构
CN109217031A (zh) * 2018-09-12 2019-01-15 昆山长盈精密技术有限公司 板对板型射频插头及其连接器组件
CN110098539A (zh) * 2018-01-30 2019-08-06 泰连公司 屏蔽的垂直插头

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993259A (en) * 1997-02-07 1999-11-30 Teradyne, Inc. High speed, high density electrical connector
US6347962B1 (en) * 2001-01-30 2002-02-19 Tyco Electronics Corporation Connector assembly with multi-contact ground shields
US6899566B2 (en) * 2002-01-28 2005-05-31 Erni Elektroapparate Gmbh Connector assembly interface for L-shaped ground shields and differential contact pairs
US6743057B2 (en) * 2002-03-27 2004-06-01 Tyco Electronics Corporation Electrical connector tie bar
WO2014005026A1 (en) * 2012-06-29 2014-01-03 Amphenol Corporation Low cost, high performance rf connector
US9831608B1 (en) * 2016-10-31 2017-11-28 Te Connectivity Corporation Electrical connector having ground shield that controls impedance at mating interface

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009170308A (ja) * 2008-01-17 2009-07-30 Japan Aviation Electronics Industry Ltd コネクタ
US9941641B1 (en) * 2017-06-01 2018-04-10 Amphenol East Asia Electronic Technology (Shen Zhen) Co., Ltd. Male connector
CN107994405A (zh) * 2017-11-17 2018-05-04 番禺得意精密电子工业有限公司 电连接器
CN110098539A (zh) * 2018-01-30 2019-08-06 泰连公司 屏蔽的垂直插头
CN108963667A (zh) * 2018-07-09 2018-12-07 肯上科技股份有限公司 高频连接器接地结构
CN109217031A (zh) * 2018-09-12 2019-01-15 昆山长盈精密技术有限公司 板对板型射频插头及其连接器组件

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4050738A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115840206A (zh) * 2021-12-14 2023-03-24 深圳市速腾聚创科技有限公司 激光接收装置及激光雷达
CN115840206B (zh) * 2021-12-14 2024-04-26 深圳市速腾聚创科技有限公司 激光接收装置及激光雷达

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US20220278490A1 (en) 2022-09-01

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