Electric connector and electronic equipment

Abstract

The invention discloses an electric connector and electronic equipment, and relates to the technical field of electric connectors, and the conductive terminal comprises a conductive terminal which comprises at least two differential signal terminals which are arranged at intervals, each differential signal terminal is provided with a wide-side coupling section, a narrow-side coupling section and a bent connecting section which is connected with the wide-side coupling section and the narrow-side coupling section along a signal transmission path; and an insulator, the differential signal terminal is embedded in the insulator, the insulator is provided with a thinning groove, and the thinning groove is arranged corresponding to the wide-side coupling section and is located at one side of the bending connection section back to the narrow-side coupling section. According to the technical scheme, the signal transmission bandwidth is improved.

Description

Technical Field

[0001] This application relates to the field of electrical connector technology, and more particularly to an electrical connector and electronic device. Background Technology

[0002] With the rapid development of information technology, high-speed signal transmission technology has been widely used in fields such as communications, computers, and consumer electronics. As a crucial component of signal transmission, the performance of high-speed connectors directly affects the transmission rate and stability of the entire system. However, existing high-speed connectors exhibit a certain degree of bandwidth suppression during high-speed signal transmission, limiting the improvement of signal transmission rates. Summary of the Invention

[0003] The main objective of this application is to provide an electrical connector and electronic device that improves signal transmission bandwidth.

[0004] To achieve the above objectives, this application provides an electrical connector, which includes:

[0005] A conductive terminal, comprising at least two differential signal terminals spaced apart, each differential signal terminal having a wide-side coupling section, a narrow-side coupling section, and a bent connecting section connecting the wide-side coupling section and the narrow-side coupling section along a signal transmission path; and

[0006] An insulator, in which the differential signal terminals are embedded, is provided with a thinning groove, which is located on the side of the bent connection section opposite to the narrow coupling section.

[0007] To achieve the above objectives, embodiments of this application propose an electronic device, which includes the electrical connector described above.

[0008] The technical solution of this application, by setting thinning grooves on the insulator, facilitates the contact between the differential signal terminals and the air, reduces the relative permittivity of the medium surrounding the terminals, effectively improves the signal transmission rate, meets the requirements of high-speed signal transmission, and thus achieves broadband improvement. Moreover, the thinning grooves are set corresponding to the wide-side coupling section, which can reduce the adverse effects on the structural strength of the narrow-side coupling section and improve the crimping effect between the differential signal terminals and the circuit board. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0010] Figure 1 This is a partial structural diagram of an embodiment of the electrical connector of this application. Figure 1 ;

[0011] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle section;

[0012] Figure 3 This is a schematic diagram of the differential signal terminals in the embodiment of the electrical connector of this application;

[0013] Figure 4 This is a schematic diagram of the arrangement of multiple conductive terminals in the embodiment of the electrical connector of this application;

[0014] Figure 5 This is an exploded structural diagram of an embodiment of the electrical connector of this application, wherein the insulator has been hidden;

[0015] Figure 6 for Figure 5 A partially enlarged structural diagram of section B;

[0016] Figure 7 This is a partial structural diagram of an embodiment of the electrical connector of this application. Figure 2 ;

[0017] Figure 8 This is an exploded structural diagram of an embodiment of the electrical connector of this application, wherein the conductive terminals are hidden;

[0018] Figure 9 This is a three-dimensional structural diagram of an embodiment of the electrical connector of this application.

[0019] Explanation of icon numbers:

[0020] 100. Conductive terminal; 110. Differential signal terminal; 111. Wide-side coupling section; 112. Narrow-side coupling section; 113. Bending connection section; 1131. First bending part; 1132. Second bending part; 120. Insulator; 121. Thinning groove; 122. Insulator body; 123. Press-fit protrusion; 130. Fisheye connection section; 200. Circuit board; 300. Shielding structure; 310. Shielding plate; 311. Flanged edge; 312. Third bending part.

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of this 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in the embodiments of this application, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the embodiments of this application.

[0027] With the increasing demand for ultra-high-speed, high-capacity transmission equipment, the signal rates of high-speed products are constantly improving. This increase in signal rate presents significant challenges to the design of high-speed links. As a critical component in high-speed links, the bandwidth of high-speed connectors directly constrains the upgrade of system speed.

[0028] In the prior art, connectors typically use differential pair signal terminals. When there is a bend at the crimp end, such as from wide to narrow, the bandwidth of the uncoupled segment formed in the differential pair signal terminal deteriorates significantly. In order to improve the crimp strength of the signal terminal, the signal terminal near the crimp surface is covered with insulating material, which further suppresses the improvement of bandwidth.

[0029] In view of this, this application provides an electrical connector and electronic device by creating a thinning groove in the insulator surrounding the signal terminals near the non-coupling section (i.e., the bent connection section). This facilitates contact between the differential signal terminals and the air. Since the relative permittivity of the insulator is greater than that of air, the relative permittivity of the medium surrounding the terminals can be reduced, effectively improving the signal transmission rate and meeting the requirements of high-speed signal transmission. Moreover, except for the thinning groove, the remaining portion of the insulator completely covers the signal terminals, ensuring the strength of the differential signal terminals and the circuit board at the crimping point while increasing bandwidth.

[0030] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0031] like Figure 1 and Figure 3 As shown in the figure, this application provides an electrical connector, which includes:

[0032] The conductive terminal 100 includes differential signal terminals 110. At least two differential signal terminals 110 are spaced apart. Each differential signal terminal 110 has a wide-side coupling section 111, a narrow-side coupling section 112, and a bent connecting section 113 connecting the wide-side coupling section 111 and the narrow-side coupling section 112 along the signal transmission path. It is understood that in this embodiment, the conductive terminal 100 is a differential terminal, and the signal is mainly transmitted in differential mode. Specifically, the wide-side coupling sections 111 of the two differential signal terminals 110 are arranged side-by-side along a first direction. After being bent by the bent connecting section 113, the narrow-side coupling sections 112 of the two differential signal terminals 110 are arranged side-by-side along a second direction, with the first and second directions perpendicular. Thus, compared to the multiple rows of narrow-side coupling sections 112 of each terminal, the overall area of ​​the contact surface with the circuit board 200 can be reduced, the board area occupied by the connector package can be reduced, and the density of the connector can be increased; and

[0033] An insulator 120 is provided, and differential signal terminals 110 are embedded within the insulator 120. The insulator 120 has a thinning groove 121, which is located on the side of the bent connecting section 113 facing away from the narrow coupling section 112, corresponding to the wide-side coupling section 111. It is understood that when the differential signal terminal 110 is bent from the wide-side coupling section 111 to the narrow-side coupling section 112 via the bent connecting section 113, the signal transmission mode changes from differential mode to common mode, resulting in bandwidth degradation. Simultaneously, the insulator 120 covering the differential signal terminal 110 further exacerbates the bandwidth degradation. Therefore, in this embodiment, a thinning groove 121 is provided in the insulator 120 corresponding to the wide-side coupling section 111, allowing the insulator 120 to be thinned at the location corresponding to the wide-side coupling section 111. In this way, the signal can have better contact with the air during transmission. Air has a relatively low permittivity, which increases the signal transmission rate and improves bandwidth. Simultaneously, the thinning groove 121 is positioned away from the narrow-edge coupling section 112, reducing its adverse effects on the structural strength of the narrow-edge coupling section 112 and improving the bonding strength between the narrow-edge coupling section 112 and the circuit board 200. Optionally, the shape of the thinning groove 121 is not limited and can be a rectangular groove, a circular groove, or other irregular shapes.

[0034] In the technical solution adopted in this embodiment, by providing a thinning groove 121 on the insulator 120, it is beneficial for the signal of the differential signal terminal 110 to contact with the air during propagation, reducing the relative permittivity of the medium surrounding the terminal, which can effectively improve the signal transmission rate, meet the requirements of high-speed signal transmission, and thus achieve broadband improvement. Moreover, the thinning groove 121 is provided corresponding to the wide-side coupling section 111, which can reduce the adverse effects on the structural strength of the narrow-side coupling section 112 and improve the crimping effect between the differential signal terminal 110 and the circuit board 200.

[0035] In the embodiments of this application, the width of the thinning groove 121 is greater than or equal to the width of the wide-side coupling section 111, thus covering the entire wide-side coupling section 111, allowing the transmitted signal of the entire wide-side coupling section 111 to reference air, reducing the relative permittivity of the medium near the entire wide-side coupling section 111 region; and / or, the length of the thinning groove 121 is less than or equal to the length of the wide-side coupling section 111, thus preventing the thinning groove 121 from extending to the vicinity of the narrow-side coupling section 112, reducing the adverse effect of the thinning groove 121 on the structural strength of the narrow-side coupling section 112, and improving the crimping strength between the narrow-side coupling section 112 and the circuit board 200; and / or, the depth of the thinning groove 121 is less than or equal to the distance from the surface of the insulator 120 to the surface of the wide-side coupling section 111, thus ensuring the strength of the narrow-side coupling section 112 of the differential signal terminal 110 when crimped to the circuit board 200 while improving the bandwidth.

[0036] In the embodiments of this application, reference is made to Figure 1 , Figure 4 and Figure 5 Two wide-side coupling segments 111 are arranged side by side along a first direction, and two narrow-side coupling segments 112 are arranged side by side along a second direction. The first direction and the second direction are different. Optionally, the first direction and the second direction are arranged perpendicularly.

[0037] Reference Figure 3 and Figure 4 The bent connecting section 113 includes a first bent portion 1131, which connects the wide-side coupling section 111 and the narrow-side coupling section 112. The first bent portions 1131 bend in opposite directions in the second direction, and the distance between the two first bent portions 1131 along the second direction is L1, 0.2 mm ≤ L1 ≤ 0.5 mm. Because the first bent portions 1131 and the second bent portions 1132 bend in opposite directions, the differential signal terminal 110 forms a non-coupled segment at this location, reducing the bandwidth at that location. The larger the distance, the greater the adverse effect on bandwidth. Therefore, in this embodiment, 0.2 mm ≤ L1 ≤ 0.5 mm minimizes the distance between the first bent portions 1131 and the second bent portions 1132 while ensuring the two narrow-side coupling sections 112 are arranged along the second direction, allowing the differential signal terminal 110 to partially couple at this location, thereby improving bandwidth. Alternatively, L1 can be 0.2 mm, 0.5 mm, or 0.3 mm.

[0038] In the embodiments of this application, reference is made to Figure 7 The bent connection portion includes a second bent portion 1132. The first bent portion 1131 and the wide-side coupling segment 111 are connected through the second bent portion 1132. The ends of the two second bent portions 1132 that are away from the wide-side coupling segment 111 are arranged close to each other in a first direction. In this way, the distance between the two wide-side coupling segments 111 can be reduced, which can effectively increase the bandwidth and improve the suppression effect on crosstalk.

[0039] In the embodiments of this application, the bending length of the second bending portion 1132 in the first direction is L2, where 0.05 mm ≤ L2 ≤ 0.1 mm. It is understood that L2 can be 0.05 mm, 0.1 mm, or 0.07 mm. In this way, while ensuring the arrangement of the two narrow-side coupling segments 112 in the second direction, the spacing between the two second bending portions 1132 in the first direction can be reduced, thereby increasing the bandwidth.

[0040] In the embodiments of this application, reference is made to Figure 3 and Figure 4The differential signal terminal 110 also includes a fisheye connector 130, which is connected to the narrow-edge coupling section 112. It is understood that the fisheye connector 130 facilitates the connection between the narrow-edge coupling section 112 and the circuit board 200. Specifically, one end of the fisheye connector 130 is connected to the narrow-edge coupling section 112, and the other end of the fisheye connector 130 is crimped to the circuit board 200, thereby enabling signal transmission.

[0041] In the embodiments of this application, reference is made to Figure 2 The insulator 120 includes an insulating body 122 and a crimping protrusion 123 protruding from the insulating body 122. A narrow-side coupling segment 112 is embedded in the crimping protrusion 123, and a wide-side coupling segment 111 and a bent connecting segment 113 are embedded in the insulating body 122. In this embodiment, the insulator 120 includes an insulating body 122 and a crimping protrusion 123, with the crimping protrusion 123 protruding from the insulator 120. The wide-side coupling segment 111 and the bent connecting segment 113 are embedded in the insulating body 122, and the narrow-side coupling segment 112 is embedded in the crimping protrusion 123. The crimping protrusion 123 can improve the structural strength of the narrow-side coupling segment 112, thereby ensuring the crimping effect between the narrow-side coupling segment 112 and the circuit board 200. In this application, the insulator 120 is injection molded on the surface of the conductive terminal 100.

[0042] In the embodiments of this application, reference is made to Figure 9 The electrical connector also includes a circuit board 200. Multiple sets of conductive terminals 100 are provided, and the narrow-edge coupling sections 112 of each set of conductive terminals 100 are electrically connected to the circuit board 200. Specifically, multiple sets of conductive terminals 100 are provided, each set of conductive terminals 100 including two differential signal terminals 110. Two insulators 120 are stacked, one insulator 120 corresponding to one differential signal terminal 110 in one set of conductive terminals 100, and the other insulator 120 corresponding to the other differential signal terminal 110 in the same set of conductive terminals 100. Of course, in other embodiments, a single insulator 120 can be shared, meaning the electrical connector has only one insulator 120.

[0043] In the embodiments of this application, reference is made to Figure 6 The electrical connector also includes a shielding structure 300, which has a shielding space in which the conductive terminals 100 are disposed. The shielding structure 300 is provided to reduce signal crosstalk between two adjacent conductive terminals 100 in the electrical connector. The shielding structure 300 is disposed outside the conductive terminals 100, which can reduce signal crosstalk between the conductive terminal 100 and adjacent conductive terminals 100, thereby improving signal transmission quality.

[0044] In the embodiments of this application, reference is made to Figure 6 and Figure 8The shielding structure 300 includes two spaced-apart shielding plates 310, which are located on opposite sides of the conductive terminal 100. It is understood that the two shielding plates 310, positioned on either side of the conductive terminal 100, can block signals and reduce crosstalk between adjacent conductive terminals 100. Furthermore, the shielding structure 300 in this embodiment consists of two spaced-apart shielding plates 310, which is simpler in structure and easier to manufacture compared to other shielding methods such as shielding sleeves. Optionally, the shielding plates 310 can be metal plates.

[0045] In the embodiments of this application, reference is made to Figure 6 The shielding plate 310 has a flange 311 at one end near the narrow-side coupling section 112, and the flanges 311 on the two shielding plates 310 extend towards each other. In this way, the shielding plate 310 can be closer to the narrow-side coupling section 112, improving the shielding effect and reducing signal crosstalk.

[0046] In the embodiments of this application, reference is made to Figure 7 The two shielding plates 310 have a third bend 312 at the corresponding wide-side coupling section 111, which bends toward each other. This allows the shielding plates 310 to be closer to the wide-side coupling section 111, improving the shielding effect, thereby reducing signal crosstalk and effectively increasing bandwidth.

[0047] This application also proposes an electronic device, which includes the electrical connector described above. Specifically, the specific structure of the electrical connector is the same as described in the above embodiments. Since this electronic device adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0048] The above description is merely an exemplary implementation of this application and does not limit the patent scope of the embodiments of this application. Any equivalent structural transformations made based on the technical concept of the embodiments of this application and the contents of the specification and drawings of the embodiments of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the embodiments of this application.

Claims

1. An electrical connector, characterized by, The electrical connector includes: A conductive terminal, comprising at least two differential signal terminals spaced apart, each differential signal terminal having a wide-side coupling section, a narrow-side coupling section, and a bent connecting section connecting the wide-side coupling section and the narrow-side coupling section along a signal transmission path; and An insulator, wherein the differential signal terminal is embedded in the insulator, the insulator is provided with a thinning groove, the thinning groove is provided corresponding to the wide side coupling section and is located on the side of the bent connection section opposite to the narrow side coupling section.

2. The electrical connector of claim 1, wherein, The width of the thinning groove is greater than or equal to the width of the wide-side coupling segment; and / or, the length of the thinning groove is less than or equal to the length of the wide-side coupling segment; and / or, the depth of the thinning groove is less than or equal to the distance from the surface of the insulator to the surface of the wide-side coupling segment.

3. The electrical connector as described in claim 1, characterized in that, The two wide-side coupling segments are arranged side by side along a first direction, and the two narrow-side coupling segments are arranged side by side along a second direction, wherein the first direction and the second direction are different; The bent connecting section includes a first bent portion, which connects the wide-side coupling section and the narrow-side coupling section. The first bent portion has opposite bends in the second direction, and the distance between the two first bent portions along the second direction is L1, where 0.2 mm ≤ L1 ≤ 0.5 mm.

4. The electrical connector as described in claim 3, characterized in that, The bent connection portion includes a second bent portion, the first bent portion and the wide-side coupling segment are connected through the second bent portion, and the ends of the two second bent portions away from the wide-side coupling segment are arranged close to each other in the first direction.

5. The conductive terminal as described in claim 4, characterized in that, The bending length of the second bending portion in the first direction is L2, where 0.05 mm ≤ L2 ≤ 0.1 mm.

6. The electrical connector as claimed in claim 1, characterized in that, The differential signal terminal also includes a fisheye connector, which is connected to the narrow-side coupling segment.

7. The electrical connector as claimed in claim 1, characterized in that, The insulator includes an insulating body and a crimping protrusion protruding from the insulating body. The narrow-side coupling section is embedded in the crimping protrusion, and the wide-side coupling section and the bent connecting section are embedded in the insulating body.

8. The electrical connector as claimed in any one of claims 1 to 7, characterized in that, The electrical connector also includes a circuit board, and the conductive terminals are provided in multiple sets, with the narrow-side coupling sections of the multiple sets of conductive terminals all electrically connected to the circuit board.

9. The electrical connector as claimed in claim 8, characterized in that, The electrical connector further includes a shielding structure having a shielding space, and the conductive terminals are disposed in the shielding space.

10. The electrical connector as claimed in claim 9, characterized in that, The shielding structure includes two shielding plates spaced apart, which are located on opposite sides of the conductive terminal.

11. The electrical connector as claimed in claim 10, characterized in that, The shielding plate has a flange at one end near the narrow coupling section, and the flanges on the two shielding plates extend toward each other.

12. The electrical connector as claimed in claim 10, characterized in that, The two shielding plates have a third bend at the position corresponding to the wide-side coupling segment, which bends toward each other.

13. An electronic device, characterized in that, The electronic device includes an electrical connector as described in any one of claims 8 to 12.

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