Plug connector

Abstract

The utility model discloses a plug connector, which comprises an insulating body provided with a base section and a butt joint section, and the butt joint section is provided with a butt joint cavity; the grounding piece comprises a fixed arm fixed in the base section, elastic arms which extend forwards from the fixed arm and are positioned on two transverse sides of the butt joint cavity, and a butt joint arm which extends backwards from the fixed arm and is exposed out of the insulating body; the upper terminal pieces comprise at least one upper high-speed signal terminal pair; the row of lower terminal pieces at least comprise a pair of lower high-speed signal terminal pairs corresponding to the upper high-speed signal terminal pairs in the vertical direction; the extension sheet extends forwards from the fixed arm and is implanted into the base section, the extension sheet is located between the upper high-speed signal terminal pair and the lower high-speed signal terminal pair in the vertical direction, and the thickness of the extension sheet is smaller than that of the fixed arm in the vertical direction; the metal shell is arranged on the periphery of the insulation body in a surrounding mode. The design can improve the high-frequency characteristic and optimize the high-speed transmission performance.

Description

Technical Field

[0001] This application relates to a plug connector. Background Art

[0002] USB 3.1 is the latest USB specification initiated by large companies such as Intel. The data transfer speed can be increased to 10 Gbps. Compared with the traditional USB 2.0 technology, the new USB technology uses a more efficient data encoding system and provides more than double the effective data throughput rate. USB 3.1 includes three types: Type-A, Type-B, and Type-C. In December 2013, the USB 3.0 Promoter Group had already announced the renderings of the next-generation USB Type-C connector, and then in August 2014, it was ready for mass production. The highlights of the new connector are a thinner design, faster transfer speed (up to 10 Gbps), and more powerful power transmission (up to 100 W). The biggest advantage is that it supports plugging in either side, solving the problem of "USB is never inserted correctly" and allowing for random insertion on either side.

[0003] Under the standard framework, USB Type-C has 24 terminal components, which are respectively 4 pairs of TX / RX split lines, 2 pairs of USBD+ / D-, one pair of SBU, 2 CCs, and in addition, there are 4 VBUSs and 4 ground wires, which are arranged in two rows that are mirror-symmetric up and down. Currently, a USB Type-C physical interface with a transmission rate as high as 40 Gbps has emerged on the market. With the increasing transmission rate, higher requirements are put forward for the framework design of the USB Type-C physical interface. Among them, an important parameter "characteristic impedance" that affects the high-frequency transmission rate has attracted more and more attention.

[0004] Characteristic impedance: Also known as "characteristic impedance", it is not a DC resistance and belongs to the concept in long-line transmission. In the high-frequency range, during the signal transmission process, where the signal wavefront arrives, due to the establishment of an electric field between the signal line and the reference plane (power or ground plane), an instantaneous current will be generated. If the transmission line is isotropic, then as long as the signal is being transmitted, there will always be a current I. And if the output level of the signal is V, during the signal transmission process, the transmission line will be equivalent to a resistor with a size of V / I. This equivalent resistor is called the characteristic impedance Z of the transmission line. During the signal transmission process, if the characteristic impedance on the transmission path changes, the signal will generate reflections at the nodes where the impedance is discontinuous.

[0005] Phenomenon analogy: Poor road conditions on a transportation line (similar to the characteristic impedance in a transmission line) will affect the speed of a transportation fleet. The narrower the road, the greater the obstructive effect of the road (the greater the characteristic impedance, the smaller the energy of the radio wave passing through); the wider and better the road conditions, the faster the fleet passing through (the more radio wave energy passing through). Suppose one section of the road conditions is extremely good and another section is extremely poor. When the fleet enters the poor section from the good section, it needs to slow down. This indicates that the road conditions of the two sections do not match (the impedance does not match).

[0006] The so-called characteristic impedance means the impedance determined by the characteristics of the line itself, as detailed below: The line impedance is determined by several factors: the line width and copper thickness (that is, the structural shape of the terminal part), and the dielectric layer thickness (that is, the thickness of the insulating body near the terminal part, etc.). However, due to the influence of manufacturing processes, product design processes, etc., changes in the structural shape of the terminal part and the control of the local thickness of the insulating body will cause changes in the impedance.

[0007] For related prior art, reference can be made to the Chinese utility model patent CN213366847U. The measured characteristic impedance of a Type-C connector male head product that optimizes the stress distribution of the terminal disclosed in this patent is relatively poor, which has a greater impact on the high-speed transmission of signals.

[0008] Therefore, it is necessary to design a new plug connector to solve the above technical problems. Summary of the Utility Model

[0009] The purpose of this application is to provide a plug connector that can achieve better high-frequency characteristics and is conducive to optimizing the high-speed transmission performance.

[0010] To achieve the above purpose, this application provides the following technical solutions:

[0011] A plug connector, comprising:

[0012] An insulating body, provided with a base section and a docking section integrally connected. The docking section is formed with a hollow docking cavity that opens forward;

[0013] A grounding part, including a fixed arm that extends horizontally and is fixed inside the base section, elastic arms that extend forward from the fixed arm and are located on both lateral sides of the docking cavity, and a docking arm that extends backward from the fixed arm and exposes outside the insulating body;

[0014] A row of multiple upper terminal components, each of the upper terminal components includes an upper fixing section fixed within the base section and above the fixing arm, an upper elastic section formed by extending forward from the upper fixing end, and an upper docking section formed by extending backward from the upper fixing end and exposed outside the insulating body. The upper elastic section extends to form an upper contact portion protruding downward into the docking cavity. The upper elastic section can elastically deform in the up and down direction. At least one pair of upper high-speed signal terminal pairs are provided among the row of multiple upper terminal components;

[0015] A row of multiple lower terminal components, each of the lower terminal components includes a lower fixing section fixed within the base section and below the fixing arm, a lower elastic section formed by extending forward from the lower fixing end, and a lower docking section formed by extending backward from the lower fixing end and exposed outside the insulating body. The lower elastic section extends to form a lower contact portion protruding upward into the docking cavity. The lower elastic section can elastically deform in the up and down direction. At least one pair of lower high-speed signal terminal pairs corresponding to the upper high-speed signal terminal pairs in the up and down direction are included among the row of multiple lower terminal components;

[0016] An extension piece, extending forward from the fixing arm and implanted within the base section. The extension piece is located between a pair of upper high-speed signal terminal pairs and a pair of lower high-speed signal terminal pairs in the up and down direction. In the up and down direction, the thickness of the extension piece is less than the thickness of the fixing arm;

[0017] A metal shell, surrounding the periphery of the insulating body.

[0018] Further, it includes: a row of multiple upper terminal receiving cavities, each of the upper terminal receiving cavities is formed through in the front-back direction at a position near the upper part of the base section;

[0019] A row of multiple upper terminal displacement grooves, each of the upper terminal displacement grooves is formed on the inner upper wall surface of the docking section and is in one-to-one correspondence and communication with the upper terminal receiving cavity in the front-back direction;

[0020] A row of multiple lower terminal receiving cavities, each of the lower terminal receiving cavities is formed through in the front-back direction at a position near the lower part of the base section;

[0021] A row of multiple lower terminal displacement grooves, each of the lower terminal displacement grooves is formed on the inner lower wall surface of the docking section and is in one-to-one correspondence and communication with the lower terminal receiving cavity in the front-back direction;

[0022] An extension piece receiving cavity, extending in the front-back direction and formed in the base section, and located between a row of multiple upper terminal receiving cavities and a row of multiple lower terminal receiving cavities;

[0023] A grounding component displacement groove, formed on two inner side wall surfaces of the docking section and in communication with the grounding component receiving cavity in the front-back direction;

[0024] The upper fixing section is fixed within the upper terminal receiving cavity;

[0025] The upper elastic section protrudes forward through the upper terminal accommodation cavity into the upper terminal displacement groove;

[0026] The lower fixed section is fixed in the lower terminal accommodation cavity;

[0027] The lower elastic section protrudes forward through the lower terminal accommodation cavity into the lower terminal displacement groove;

[0028] The extension piece is fixed in the extension piece accommodation cavity.

[0029] Furthermore, the upper fixed section includes an upper front section and an upper rear section. The upper front section and the upper rear section are integrally connected in the front-rear direction and are arranged offset in the up-down direction to form an upper front stop surface. The upper stop surface stops in front against the stepped inner wall surface of the upper terminal accommodation cavity;

[0030] The lower fixed section includes a lower front section and a lower rear section. The lower front section and the lower rear section are integrally connected in the front-rear direction and are arranged offset in the up-down direction to form a lower front stop surface. The lower stop surface stops in front against the stepped inner wall surface of the lower terminal accommodation cavity.

[0031] Furthermore, the upper front section and the upper rear section are integrally connected in the front-rear direction and are arranged offset in the up-down direction to form an upper rear stop surface. The lower front section and the lower rear section are integrally connected in the front-rear direction and are arranged offset in the up-down direction to form a lower rear stop surface;

[0032] An insulating block is integrally formed on the fixing arm. In the up-down direction, the thickness of the insulating block is greater than the thickness of the fixing arm. The insulating block stops in front against the upper rear stop surface and / or the lower rear stop surface.

[0033] Furthermore, the lower surface of the upper rear section abuts against the upper surface of the insulating block, and the upper surface of the lower rear section abuts against the lower surface of the insulating block.

[0034] Furthermore, in the up-down direction, the connection width between the upper front section and the upper rear section is less than the width of the upper front section and less than the width of the upper rear section;

[0035] In the up-down direction, the connection width between the lower front section and the lower rear section is less than the width of the lower front section and less than the width of the lower rear section;

[0036] In the up-down direction, the width of the upper front section is greater than the width of the upper elastic section, and the width of the upper rear section is greater than the width of the upper elastic section;

[0037] In the up-down direction, the width of the lower front section is greater than the width of the lower elastic section, and the width of the lower rear section is greater than the width of the lower elastic section;

[0038] The upper front section and the upper rear section are both penetrated by upper through holes in the transverse direction;

[0039] The lower front section and the lower rear section are both penetrated by lower through holes in the transverse direction;

[0040] Further, any two adjacent upper terminal receiving cavities are communicated with each other by an upper air groove in the transverse direction. In the transverse direction, the upper air groove is clamped between two adjacent upper fixing sections;

[0041] Any two adjacent lower terminal receiving cavities are communicated with each other by a lower air groove in the transverse direction. In the transverse direction, the lower air groove is clamped between two adjacent lower fixing sections.

[0042] Further, the upper through hole is communicated with the upper air groove; the lower through hole is communicated with the lower air groove.

[0043] Further, in the front-rear direction, the extending path of the upper air groove covers the entire length of the upper fixing section; in the front-rear direction, the extending path of the lower air groove covers the entire length of the lower fixing section.

[0044] Further, the docking arm includes a connecting portion formed by extending upward and backward from the fixing arm, a first grounding leg formed by further extending backward from the rear edge of the connecting portion, a second grounding leg and a third grounding leg formed by extending downward and backward from the outer edge of the connecting portion. The second grounding leg and the third grounding leg are spaced apart in the up-down direction and are formed with an insertion notch that is open backward for inserting a docking circuit board.

[0045] Compared with the prior art, the beneficial effects of the present application are: it can achieve better high-frequency characteristics and is conducive to optimizing the high-speed transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a three-dimensional schematic diagram of the plug connector of the present application, specifically showing the overall schematic diagram after combining the plug connector with the cable module.

[0047] Figure 2 is a three-dimensional schematic diagram of the plug connector of the present application.

[0048] Figure 3 is a front view of the plug connector of the present application.

[0049] Figure 4 is an exploded three-dimensional view of the plug connector of the present application.

[0050] Figure 5 is Figure 4 a schematic diagram of the exploded three-dimensional view shown from another angle.

[0051] Figure 6 is along Figure 3Cross-sectional view along line A-A in [the figure].

[0052] Figure 7 is Figure 6 an enlarged view of the structure within the dashed-line frame in [the figure].

[0053] Figure 8 a cross-sectional view along line A-A of the insulating body of the plug connector of the present application along Figure 3 line A-A in [the figure].

[0054] Figure 9 is Figure 3 a cross-sectional view along line B-B in [the figure].

[0055] Figure 10 a three-dimensional schematic view of the grounding part and the insulating block of the plug connector of the present application.

[0056] Figure 11 a three-dimensional schematic view of the upper terminal part of the plug connector of the present application.

[0057] Figure 12 a three-dimensional schematic view of the lower terminal part of the plug connector of the present application.

[0058] Figure 13 a three-dimensional schematic view of the second embodiment of the plug connector of the present application, simultaneously showing the state diagram after docking with the docking circuit board.

[0059] Figure 14 is Figure 13 a front view of the second embodiment of the plug connector of the present application shown in [the figure].

[0060] Figure 15 is Figure 13 a three-dimensional exploded view of the second embodiment of the plug connector of the present application shown in [the figure].

[0061] Figure 16 is Figure 14 a cross-sectional view along line A-A in [the figure].

[0062] Figure 17 a cross-sectional view along line A-A of the insulating body of the second embodiment of the plug connector of the present application along Figure 14 line A-A in [the figure].

[0063] Figure 18 is Figure 14 a cross-sectional view along line B-B in [the figure].

[0064] Figure 19 is Figure 13 a three-dimensional exploded view of the second embodiment of the plug connector of the present application shown in [the figure], where Figure 19 the viewing angle is Figure 15 different from Detailed implementation manners

[0065] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0066] In the description of the present application, it should be understood that the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0067] In addition, for the sake of accuracy of description, all directions involved throughout the text of the present application shall be uniformly based on Figure 2 or Figure 13 as a reference. Specifically: the direction where the X-axis is located is defined as the front-back direction (i.e., the docking direction of the docking connector), where the positive direction of the X-axis is the front; the direction where the Y-axis is located is defined as the up-down direction (i.e., the thickness direction of the plug connector), where the positive direction of the Y-axis is the up; the direction where the Z-axis is located is defined as the left-right direction (i.e., the lateral direction of the plug connector).

[0068] Please refer to Figures 1 to 12 shown, which is a first embodiment of a plug connector disclosed in the present application. The plug connector includes an insulating body 1, a row of multiple upper terminal components 21 fixed in the insulating body 1, a row of multiple lower terminal components 22 fixed in the insulating body 1, a grounding component 23 fixed in the insulating body 1, and a metal shell 3 surrounding the periphery of the insulating body 1. The row of multiple upper terminal components 21 and the row of multiple lower terminal components 22 are arranged in one-to-one correspondence along the up-down direction. The plug connector of the present application is a standard architecture USB Type C plug connector, where there are twelve upper terminal components 21 and twelve lower terminal components 22.

[0069] Please refer to in combination Figure 4 , Figure 5 and Figure 8As shown, the insulating body 1 is integrally injection-molded from an insulating material, and is provided with a base section 11 and a docking section 12 that are integrally connected. The docking section 12 is formed with a hollow docking cavity 10 that opens forward. The insulating body 1 is formed with a row of a plurality of upper terminal receiving cavities 101 that penetrate in the front-rear direction at a position near the upper part of the base section 11, a row of a plurality of upper terminal displacement grooves 102 formed on the inner upper wall surface of the docking section 12 and communicating with the upper terminal receiving cavities 101 one-to-one in the front-rear direction, a row of a plurality of lower terminal receiving cavities 103 that penetrate in the front-rear direction at a position near the lower part of the base section 11, a row of a plurality of lower terminal displacement grooves 104 formed on the inner lower wall surface of the docking section 12 and communicating with the lower terminal receiving cavities 103 one-to-one in the front-rear direction, an extension piece receiving cavity 105 that extends in the front-rear direction and is located between the row of a plurality of upper terminal receiving cavities 101 and the row of a plurality of lower terminal receiving cavities 103 in the base section 11, and a grounding piece displacement groove 106 formed on the two inner side wall surfaces of the docking section 12 and communicating with the grounding piece receiving cavity 105 in the front-rear direction.

[0070] Each of the upper terminal members 21 includes an upper fixing section 211 fixed to the base section 11 and located above the fixing arm 231, an upper elastic section 212 extending forward from the upper fixing end 211, and an upper docking section 213 extending backward from the upper fixing end 211 and exposed outside the insulating body 1. The upper elastic section 212 extends to form an upper contact portion 2121 that protrudes downward into the docking cavity 10. The upper elastic section 212 can elastically deform in the up-down direction. Among a row of multiple upper terminal members 21, there are two pairs of upper high-speed signal terminal pairs 201. Specifically, the upper fixing section 211 is fixed in the upper terminal receiving cavity 101. The upper elastic section 212 protrudes forward through the upper terminal receiving cavity 101 into the upper terminal displacement groove 102.

[0071] Each of the lower terminal members 22 includes a lower fixing section 221 fixed to the base section 11 and located below the fixing arm 231, a lower elastic section 222 extending forward from the lower fixing end 221, and a lower docking section 223 extending backward from the lower fixing end 221 and exposed outside the insulating body 1. The lower elastic section 222 extends to form a lower contact portion 2221 that protrudes upward into the docking cavity 10. The lower elastic section 222 can elastically deform in the up-down direction. Among a row of multiple lower terminal members 22, there are two pairs of lower high-speed signal terminal pairs 202 that correspond to the upper high-speed signal terminal pairs 201 one-to-one in the up-down direction. Specifically, the lower fixing section 221 is fixed in the lower terminal receiving cavity 103. The lower elastic section 222 protrudes forward through the lower terminal receiving cavity 103 into the lower terminal displacement groove 104.

[0072] The grounding member 23 includes a fixing arm 231 that extends horizontally and is fixed within the base section 11, elastic arms 232 that extend forward from the fixing arm 231 and are located on the lateral sides of the docking cavity 10, and a docking arm 233 that extends backward from the fixing arm 231 and exposes outside the insulating body 1. The grounding member 23 further includes an extension piece 234. The extension piece 234 extends forward from the fixing arm 231 and is implanted within the base section 11. Specifically, the extension piece 234 is fixed within the extension piece receiving cavity 105. The extension piece 234 is located between a pair of upper high-speed signal terminal pairs 201 and a pair of lower high-speed signal terminal pairs 202 in the up-down direction. In the up-down direction, the thickness of the extension piece 234 is less than the thickness of the fixing arm 231. In this way, a better shielding and grounding effect can be achieved, and the structural and shape design of the extension piece 234 is beneficial to the optimization of characteristic impedance and the improvement of high-speed transmission performance.

[0073] In the embodiments of the present application, in a preferred embodiment, the extension length of the extension piece 234 in the front-back direction is not less than the extension lengths of the upper fixing section 211 and the lower fixing section 221. In the up-down direction, the extension piece 234 completely blocks the upper fixing section 211 of the corresponding pair of upper high-speed signal terminal pairs 201 and the lower fixing section 221 of the corresponding pair of lower high-speed signal terminal pairs 202. In the embodiments of the present application, in a preferred embodiment, the extension length of the extension piece 234 in the front-back direction is not less than two-fifths of the sum of the extension lengths of the upper fixing section 211 and the upper elastic section 212 of the upper high-speed signal terminal pair 201. The extension length of the extension piece 234 in the front-back direction is not less than two-fifths of the sum of the extension lengths of the lower fixing section 221 and the lower elastic section 222 of the lower high-speed signal terminal pair 202.

[0074] Please refer to Figure 6 、 Figure 7 and Figure 11 As shown, a row of multiple upper terminal members 21, a row of multiple lower terminal members 22, and the grounding member 23 in the present application are all assembled and fixed to the insulating body 1. The upper fixing section 211 of each upper terminal member 21 includes an upper front section 2111 and an upper rear section 2112. The upper front section 2111 and the upper rear section 2112 are integrally connected in the front-back direction and are arranged in a staggered manner in the up-down direction to form an upper front stop surface 2011. The upper stop surface 2011 stops forward against the stepped inner wall surface of the upper terminal receiving cavity 101. The lower fixing section 221 of each lower terminal member 22 includes a lower front section 2211 and a lower rear section 2212. The lower front section 2211 and the lower rear section 2212 are integrally connected in the front-back direction and are arranged in a staggered manner in the up-down direction to form a lower front stop surface 2021. The lower stop surface 2021 stops forward against the stepped inner wall surface of the lower terminal receiving cavity 103.

[0075] Further, each of the upper front segments 2111 and upper rear segments 2112 is integrally connected in the front-rear direction and is arranged in a staggered manner in the up-down direction to form an upper rear stop surface 2012. Each of the lower front segments 2211 and lower rear segments 2212 is integrally connected in the front-rear direction and is arranged in a staggered manner in the up-down direction to form a lower rear stop surface 2022. An insulating block 2311 is integrally formed on the fixing arm 231. In the up-down direction, the thickness of the insulating block 2311 is greater than the thickness of the fixing arm 231. The insulating block 2311 is forwardly stopped at the upper rear stop surface 2012 and the lower rear stop surface 2022. The lower rear surface of the upper rear segment 2112 abuts against the upper surface of the insulating block 2311. The upper surface of the lower rear segment 2212 abuts against the lower surface of the insulating block 2311.

[0076] Please refer to Figure 6 , Figure 7 and Figure 11As shown, in a preferred embodiment, in the up-down direction, the connection width between the upper front section 2111 and the upper rear section 2112 is less than the width of the upper front section 2111 and less than the width of the upper rear section 2112. In the up-down direction, the connection width between the lower front section 2211 and the lower rear section 2212 is less than the width of the lower front section 2211 and less than the width of the lower rear section 2212. In the up-down direction, the width of the upper front section 2111 is greater than the width of the upper elastic section 212. The width of the upper rear section 2112 is greater than the width of the upper elastic section 212. In the up-down direction, the width of the lower front section 2211 is greater than the width of the lower elastic section 222. The width of the lower rear section 2212 is greater than the width of the lower elastic section 222. Upper through holes 2113 penetrate through the upper front section 2111 and the upper rear section 2112 in the transverse direction. Lower through holes 2213 penetrate through the lower front section 2211 and the lower rear section 2212 in the transverse direction. Any two adjacent upper terminal receiving cavities 101 communicate with each other through an upper air groove 1011 in the transverse direction. In the transverse direction, the upper air groove 1011 is clamped between two adjacent upper fixing sections 211. Any two adjacent lower terminal receiving cavities 103 communicate with each other through a lower air groove 1031 in the transverse direction. In the transverse direction, the lower air groove 1031 is clamped between two adjacent lower fixing sections 221. In a preferred embodiment, the upper through hole 2113 communicates with the upper air groove 1011. The lower through hole 2213 communicates with the lower air groove 1031. In a preferred embodiment, in the front-rear direction, the extending path of the upper air groove 1011 covers the entire length of the upper fixing section 211. In the front-rear direction, the extending path of the lower air groove 1031 covers the entire length of the lower fixing section 221. In this way, an assembly limit can be formed between the upper terminal member 21 and the lower terminal member 22, the insulating body 1, and the grounding member 23 combined with the insulating block 2311; at the same time, it is beneficial to adjust the characteristic impedance of the plug connector, especially to optimize the characteristic impedance performance of the upper high-speed signal terminal pair 201 and the lower high-speed signal terminal pair 202, which is beneficial to improving the high-speed transmission performance.

[0077] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 10As shown, the docking arm 233 of the grounding member 23 includes a connecting portion 2330 formed by extending upward and backward from the fixed arm 231, a first grounding leg 2331 formed by further extending backward from the rear edge of the connecting portion 2330, a second grounding leg 2332 formed by extending downward and backward from the outer edge of the connecting portion 2330, and a third grounding leg 2333. The second grounding leg 2332 and the third grounding leg 2333 are spaced apart in the vertical direction and are formed with an insertion notch 2334 that is open backward for inserting a docking circuit board (not shown in the first embodiment). The connecting portion 2330 is buried and fixed inside the rear end position of the base section 11 of the insulating body 1, and a part of the connecting ends of the first grounding leg 2331, the second grounding leg 2332, and the third grounding leg 2333 connected to the connecting portion 2330 are also buried and fixed inside the rear end position of the base section 11 of the insulating body 1. The design of multiple grounding legs can make the grounding effect more stable, can achieve better fixation with the docking circuit board, and can also make the grounding member 23 and the insulating body member hold more stably and firmly.

[0078] Please refer to Figures 13 to 19 As shown, this is the second embodiment of the plug connector of the present application. The second embodiment is essentially a simplified version of the first embodiment. Specifically, in the second embodiment, the upper through hole 2113, the lower through hole 2213, the upper air groove 1011, and the lower air groove 1031 structures as described in the first embodiment are cancelled. In the second embodiment, the structure of the docking arm 233 is also simplified, directly formed by bending and extending the fixed arm 231 backward with a dislocation, and only one is provided on one side. In the second embodiment, the positions of the upper front stop surface 2011, the upper rear stop surface 2012, the lower front stop surface 2021, and the lower rear stop surface 2022 are also appropriately adjusted in the front-rear direction. In the second embodiment, there is no obvious dislocation structure on the upper fixing section 211 and the lower fixing section 221 as shown in the first embodiment. However, the structure of the extension piece 234 in the second embodiment is the same as that in the first embodiment. Compared with the prior art, the plug connector in the second embodiment of the present application can also achieve optimized shielding and grounding effects and also optimize the characteristic impedance performance; but compared with the first embodiment, the effect of the second embodiment is slightly worse.

[0079] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this design, rather than limiting it; although the present design has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of this design.

[0080] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plug connector, characterized in that: include: The insulating body is provided with a base section and a docking section which are integrally connected, wherein the docking section is formed with a hollow docking cavity which is open to the front end; A grounding member, comprising a fixing arm extending transversely and fixed in the base section, an elastic arm extending forward from the fixing arm and located at both transverse sides of the docking cavity, and a docking arm extending backward from the fixing arm and exposed outside the insulating body; A row of multiple upper terminal pieces, each of the upper terminal pieces includes an upper fixed section fixed in the base section and located above the fixed arm, an upper elastic section formed by extending forward from the upper fixed end, and an upper docking section extending backward from the upper fixed end and exposed outside the insulating body, the upper elastic section extends to form an upper contact portion protruding downward into the docking cavity, the upper elastic section can be elastically deformed in the up and down direction, and at least one pair of upper high-speed signal terminals is provided in the row of multiple upper terminal pieces; A row of multiple lower terminal pieces, each of the lower terminal pieces includes a lower fixed section fixed in the base section and located below the fixed arm, a lower elastic section formed by extending forward from the lower fixed end, and a lower docking section extending backward from the lower fixed end and exposed outside the insulating body, the lower elastic section extends to form a lower contact portion protruding upward into the docking cavity, the lower elastic section can be elastically deformed in the up-down direction, and the row of multiple lower terminal pieces includes at least a pair of lower high-speed signal terminal pairs corresponding to the upper high-speed signal terminal pairs in the up-down direction; An extension piece, extending forward from the fixed arm and implanted in the base section, the extension piece is located between a pair of upper high-speed signal terminals and a pair of lower high-speed signal terminals along the up-down direction, and the thickness of the extension piece along the up-down direction is less than the thickness of the fixed arm; The metal shell is arranged around the outer periphery of the insulating body.

2. The plug connector according to claim 1, characterized in that: include: A row of a plurality of upper terminal accommodating cavities, each of the upper terminal accommodating cavities being formed through the base section near the upper portion along the front-to-back direction; A row of a plurality of upper terminal displacement grooves, each of which is formed on the inner upper wall surface of the docking section and is connected to the upper terminal accommodating cavity in a one-to-one correspondence along the front-to-back direction; A row of multiple lower terminal accommodating cavities, each of which is formed through the base section near the bottom in the front-to-back direction; A row of multiple lower terminal displacement grooves, each of which is formed on the inner lower wall surface of the docking section and is connected to the lower terminal accommodating cavity in a one-to-one correspondence along the front-to-back direction; An extension piece accommodating cavity is formed in the base section extending in the front-to-back direction and is located between a row of a plurality of upper terminal accommodating cavities and a row of a plurality of lower terminal accommodating cavities; A grounding member displacement groove is formed on two inner side walls of the docking section and is connected to the grounding member accommodating cavity along the front-rear direction; The upper fixing section is fixed in the upper terminal accommodating cavity; The upper elastic section protrudes forward through the upper terminal accommodating cavity into the upper terminal displacement groove; The lower fixing section is fixed in the lower terminal accommodating cavity; The lower elastic section protrudes forward through the lower terminal accommodating cavity into the lower terminal displacement groove; The extension piece is fixed in the extension piece accommodating cavity.

3. The plug connector according to claim 2, wherein: The upper fixed section comprises an upper front section and an upper rear section, the upper front section and the upper rear section are integrally connected along the front-to-back direction and staggered along the up-down direction to form an upper front stop surface, and the upper front stop surface stops forward on the stepped inner wall surface of the upper terminal accommodating cavity; The lower fixed section includes a lower front section and a lower rear section, which are integrally connected along the front-to-back direction and staggered along the up-down direction to form a lower front stop surface, which stops forward on the stepped inner wall surface of the lower terminal accommodating cavity.

4. The plug connector according to claim 3, characterized in that: The upper front section and the upper rear section are integrally connected along the front-to-back direction and are staggered along the up-down direction to form an upper rear stop surface, and the lower front section and the lower rear section are integrally connected along the front-to-back direction and are staggered along the up-down direction to form a lower rear stop surface; An insulating block is integrally formed on the fixed arm. Along the up-down direction, the thickness of the insulating block is greater than the thickness of the fixed arm. The insulating block stops forward at the upper rear stop surface and / or the lower rear stop surface.

5. The plug connector according to claim 4, characterized in that: The rear lower surface of the upper rear section abuts against the upper surface of the insulating block, and the upper surface of the lower rear section abuts against the lower surface of the insulating block.

6. The plug connector according to claim 3 or 4, characterized in that: Along the up-down direction, the connection width of the upper front section and the upper rear section is smaller than the width of the upper front section and smaller than the width of the upper rear section; Along the up-down direction, the connection width of the lower front section and the lower rear section is smaller than the width of the lower front section and smaller than the width of the lower rear section; Along the up-down direction, the width of the upper front section is greater than the width of the upper elastic section, and the width of the upper rear section is greater than the width of the upper elastic section; Along the up-down direction, the width of the lower front section is greater than the width of the lower elastic section, and the width of the lower rear section is greater than the width of the lower elastic section; The upper front section and the upper rear section are both penetrated by an upper through hole in the transverse direction; The lower front section and the lower rear section are both penetrated by lower through holes along the transverse direction.

7. The plug connector according to claim 6, characterized in that: Any two adjacent upper terminal accommodating cavities are connected in the transverse direction through the upper air groove, and in the transverse direction, the upper air groove is sandwiched between two adjacent upper fixing sections; Any two adjacent lower terminal accommodating cavities are connected in the transverse direction through the lower air groove, and in the transverse direction, the lower air groove is sandwiched between two adjacent lower fixing sections.

8. The plug connector according to claim 7, characterized in that: The upper through hole is in communication with the upper air groove; The lower through hole is communicated with the lower air groove.

9. The plug connector according to claim 7, characterized in that: In the front-to-back direction, the extension path of the upper air groove covers the entire length of the upper fixing section; Along the front-to-back direction, the extension path of the lower air groove covers the entire length of the lower fixing section.

10. The plug connector according to claim 1 or 2 or 3 or 4, characterized in that: The docking arm includes a connecting portion formed by the fixed arm extending upward and backward, a first grounding pin formed by the rear end edge of the connecting portion further extending backward, and a second grounding pin and a third grounding pin formed by the outer edge of the connecting portion extending downward and backward. The second grounding pin and the third grounding pin are spaced apart in the up and down direction to form insertion notches that are open backwards for inserting the docking circuit board.

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