Connector and connector system

Abstract

The present invention discloses a connector, belonging to the technical field of electrical connectors. The connector comprises a housing, the housing having a mating surface; a thin sheet body, supported by the housing, the thin sheet body having a first edge, a second edge and a first side; a signal differential pair of terminals, supported by the thin sheet body, the signal differential pair of terminals having a contact portion extending from the first edge, a tail portion extending from the second edge, and a body portion extending between the contact portion and the tail portion, the signal differential pair of terminals being arranged to be edge-to-edge aligned; the present invention has a novel structure, and by applying the connector and connector system provided by the present invention, the high-speed data transmission rate of the backplane connector is improved, so that its transmission rate can meet 56Gbps, 122Gbps or even higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric connectors, and more specifically, to a connector and a connector system. Background Art

[0002] In the era of the booming development of 5G (fifth generation mobile communication technology), IOT, big data, cloud, smart driving, smart medical care, smart home, etc., the data transmission rate requirements for various systems and equipment used in high-speed digital communications are getting higher and higher. High-speed digital communication backplane connectors are important basic components of high-speed communication systems and equipment. The signal integrity performance of this connector seriously affects the performance of high-speed digital communication systems and equipment. At present, the single-channel 5Gbps transmission rate backplane connector can no longer meet the requirements of high-speed digital communication systems and equipment for high-speed data transmission rates. Instead, the single-channel transmission rate of the backplane connector is required to reach 10Gbps, 28Gpbs, and then 56Gbps, 122Gbps or even higher.

[0003] However, most of the single-channel high-speed data transmission rates of backplane connectors in China are below 28Gpbs. Therefore, it is very important and necessary to study backplane connectors and their structures and improve the high-speed data transmission rate of backplane connectors. We analyzed and studied the existing backplane connectors, and on this basis, invented a connector and connector system. Summary of the invention

[0004] The purpose of the present invention is to provide a connector and a connector system in order to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A connector, comprising: a shell, the shell having a mating surface; a thin sheet body supported by the shell, the thin sheet body having a first edge, a second edge and a first side; a signal differential pair of terminals supported by the thin sheet body, the signal differential pair of terminals having a contact portion extending from the first edge, a tail portion extending from the second edge, and a body portion extending between the contact portion and the tail portion, the signal differential pair of terminals being arranged with edges aligned; a shielding frame supported by the thin sheet body on the first side, the shielding frame having at least one U-shaped receiving groove, the U-shaped receiving groove having two side walls, the U-shaped receiving groove and the body portion extending between the contact portion and the tail portion The signal differential pair terminals are aligned, and the two side walls are located on both sides of the signal differential pair terminals, wherein the contact portion of the shielding frame has one or more first elastic arm terminals and one or more second elastic arm terminals, and the length of the first elastic arm terminal is longer than the length of the second elastic arm terminal; a grounding terminal, supported by the thin sheet body and positioned adjacent to the signal differential pair terminals, the grounding terminal has a grounding contact portion and a grounding tail, and the grounding terminal and the signal differential pair terminals are arranged in a row; a signal return path channel, which is formed by connecting a grounding contact portion of the grounding terminal, a side wall of the U-shaped accommodating groove, and a grounding tail of the grounding terminal in series.

[0007] Furthermore, the U-shaped receiving groove on the shielding frame extends from the first edge to the second edge along the body of the signal differential terminal pair.

[0008] Furthermore, the grounding terminal is a first grounding terminal, and the connector also includes a second grounding terminal, the second grounding terminal and the first grounding terminal are located on both sides of the adjacent signal differential pair of terminals, and the side walls of the U-shaped accommodating groove of the shielding frame are electrically connected to the first grounding terminal and the second grounding terminal.

[0009] Furthermore, the first grounding terminal and the second grounding terminal are provided with a plurality of slots at the grounding contact portion and the grounding tail portion, and the shielding frame includes a plurality of wedge-shaped blocks, and the plurality of wedge-shaped blocks are tightly fitted and connected with the plurality of slots one by one.

[0010] Furthermore, the first edge and the second edge form a right angle with each other.

[0011] Based on the above connector, the present invention further provides a connector system including the above connector, including: a first connector and a second connector that cooperate with each other; the first connector includes:

[0012] A U-shaped base, with a differential pair unit disposed at the bottom of the U-shaped base;

[0013] A differential pair of terminals, supported by the U-shaped base, wherein the edges of two differential pair of terminals inside the differential pair of terminals are aligned with the edges;

[0014] a groove-type terminal supported by the U-shaped base, the groove-type terminal having a body and two side wings extending from the body so as to have a U-shape, the side wings having abutting edges;

[0015] The second connector comprises:

[0016] a housing having a side configured to interface with the U-shaped base;

[0017] A sheet body supported by the housing, the sheet body having a first edge, a second edge and a first side;

[0018] a signal differential pair of terminals, supported by the thin sheet body, the signal differential pair of terminals having a contact portion extending from the first edge, a tail portion extending from the second edge, and a body portion extending between the contact portion and the tail portion, the signal differential pair of terminals being arranged to be edge-to-edge aligned;

[0019] A shielding frame, supported by the thin sheet body on the first side, the shielding frame having at least one U-shaped accommodating groove, the U-shaped accommodating groove having two side walls, the U-shaped accommodating groove being aligned with the signal differential pair of terminals, the two side walls being located on both sides of the signal differential pair of terminals, wherein the contact portion of the shielding frame has one or more first elastic arm terminals and one or more second elastic arm terminals, the length of the first elastic arm terminal being longer than the length of the second elastic arm terminal;

[0020] a grounding terminal supported by the sheet body and positioned adjacent to the signal differential pair of terminals, the grounding terminal having a grounding contact portion and a grounding tail portion, the grounding terminal and the signal differential pair of terminals being arranged in a row;

[0021] A signal return path channel is formed by connecting a grounding contact portion of the grounding terminal, a side wall of the U-shaped receiving groove, and a grounding tail portion of the grounding terminal in series.

[0022] Furthermore, the U-shaped receiving groove on the shielding frame extends from the first edge to the second edge along the body of the signal differential terminal pair.

[0023] Furthermore, the grounding terminal is a first grounding terminal, and the connector also includes a second grounding terminal, the second grounding terminal and the first grounding terminal are located on both sides of the adjacent signal differential pair of terminals, and the side walls of the U-shaped accommodating groove of the shielding frame are electrically connected to the first grounding terminal and the second grounding terminal.

[0024] Furthermore, the first grounding terminal and the second grounding terminal are provided with a plurality of slots at the grounding contact portion and the grounding tail portion, and the shielding frame includes a plurality of wedge-shaped blocks, and the plurality of wedge-shaped blocks are tightly fitted and connected with the plurality of slots one by one.

[0025] Furthermore, the differential pair units are distributed in an array, and air holes are provided between the groove-shaped terminals in the differential pair units and the differential pair terminals.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention has a novel structure. By applying the connector and connector system provided by the present invention, the high-speed data transmission rate of the backplane connector is improved, so that its transmission rate can meet 56Gbps, 122Gbps or even higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the connector system in a mated state;

[0029] Figure 2 This is a schematic diagram of the connector system with the connector separated.

[0030] Figure 3 is a schematic diagram of a first connector;

[0031] Figure 4 It is a schematic diagram of differential pair terminals;

[0032] Figure 5 It is a schematic diagram of the primary coupling edge and the secondary coupling edge of the differential pair terminal pair;

[0033] Figure 6 It is a schematic diagram of the recessed state of part of the secondary coupling edge of the differential pair terminal pair;

[0034] Figure 7 It is a schematic diagram of the assembly features of the differential pair of terminals;

[0035] Figure 8 It is a schematic diagram of an improved U-shaped insulator base;

[0036] Fig. 9 yes Figure 8 Schematic diagram from another perspective;

[0037] Fig.10 is a schematic diagram of a differential pair combination unit;

[0038] Fig.11 is a schematic diagram of an array of differential pair combination units;

[0039] Fig.12It is a schematic diagram of a single differential pair of terminals and a U-shaped receiving slot terminal mounted on a plastic base;

[0040] Fig.13 Schematic diagram of the second connector;

[0041] Fig.14 yes Fig.13 Schematic diagram of the middle shell after translation;

[0042] Fig.15 yes Fig.13 Schematic diagram after the middle shell is removed;

[0043] Fig.16 Schematic diagram of the sheet unit assembly;

[0044] Fig.17 yes Fig.16 Schematic diagram from another perspective;

[0045] Fig.18 yes Fig.16 Schematic diagram from another perspective, showing the misalignment of metal pathways;

[0046] Fig.19 It is a schematic diagram of a thin sheet unit;

[0047] Fig. 20 yes Fig.19 Schematic diagram after removing the shield frame;

[0048] Fig.21 yes Fig. 20 Schematic diagram after removing the plastic bracket, showing the metal pathways;

[0049] Fig. 22 It is a schematic diagram of the signal return path channel;

[0050] Fig.23 It is a schematic diagram of a signal differential pair of terminals placed in a U receiving groove of a shielding frame;

[0051] Fig.24 is a schematic diagram of the shielding frame;

[0052] Fig.25 yes Fig.24 Another schematic diagram of;

[0053] Fig.26 It is a schematic diagram of the depth a of the U-shaped receiving groove. DETAILED DESCRIPTION

[0054] The present invention is further described below in conjunction with embodiments, which are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the scope of protection of the present invention.

[0055] Embodiment 1:

[0056] like Figure 1 and Figure 2 As shown, an embodiment of a connector system includes a connection between a first circuit substrate 100 and a second circuit substrate 200 positioned perpendicular to each other. Specifically, the first connector 300 is mounted on the circuit substrate 100 and is configured to dock with the second connector 400 mounted on the circuit substrate 200.

[0057] like Figure 3 As shown, the first connector 300 includes a U-shaped base 1 , a group of recessed terminals 3 and a differential pair of terminals 2 .

[0058] like Figures 4 to 7 As shown, the differential pair terminal pair 2 is composed of two axisymmetric or approximately axisymmetric terminals 21 and 22, including contact parts 211 and 221 when mated with other connectors, terminal fixing parts 212 and 222 fixed by a plastic base, and EON contact parts 213 and 223 crimped by a PCB. The main coupling edges 2121 and 2221 of the fixing parts of the differential pair terminal pair 2 are flattened and manufactured using a stamping process.

[0059] The secondary coupling edges 2122 and 2222 of the fixed portion of the differential pair terminal pair 2 are mainly used for manufacturing design, and a manufacturing process scheme combining an assembly jig cutting process and a stamping cutting process is adopted. Part of the secondary coupling edges 2122_2 and 2222_2 are recessed into the holding edges 2122_1 and 2122_3 and 2222_1 and 2222_3 of the terminal, and the recess amount b is greater than zero. The secondary coupling edges 2122_2 and 2222_2 are cut using an assembly jig cutting process.

[0060] The concave structure can increase the impedance of the differential pair to achieve a good differential impedance matching. The widths w1 and w2 of the terminal holding portion are greater than the maximum width w3 of the EON, and each holding edge is higher than the maximum edge of the EON, and the heights a1 and a2 are greater than zero.

[0061] A press-in shoulder 214 and 224 is designed on each of the terminals 21 and 22 so that the terminals 21 and 22 can be pressed into the positioning holes 121 and 122 in the plastic base 1 .

[0062] like Figures 8 to 9As shown, a U-shaped base 1 is made of insulating material, including a base 11 with an array of differential pair units 12, a side wall 13 with a guide and positioning function, and another side wall 14 with a guide and positioning function. A plurality of guide and positioning grooves 131 and 132 are provided on the side wall 13 with a guide and positioning function. A plurality of guide and positioning grooves 141 and 142 are provided on the other side wall 14 with a guide and positioning function. There is an offset between the plurality of guide and positioning grooves 131 and 132 provided on the side wall 13 with a guide and positioning function and the plurality of guide and positioning grooves 141 and 142 provided on the other side wall 14 with a guide and positioning function, which together constitute the guidance and positioning function when the corresponding connector is mated.

[0063] like Fig.10 As shown, air regions 1231 and 1232 are provided at the bottom of the U-shaped hole 123 of the differential pair unit 12 , and the air regions 1231 and 1232 are located between the differential pair holes 121 and 122 and the bottom of the U-shaped hole 123 .

[0064] like Fig.11 As shown, the differential pair units 12 on the base are distributed in an array, and there is a specific position misalignment between the differential pair unit array group 12a and the differential pair unit array group 12b.

[0065] like Fig.12 As shown, the differential metal differential pair terminal pair 2 is installed in the differential pair holes 121 and 122 of the differential pair unit 12 respectively; and the U-shaped signal metal groove type terminal 3 is installed in the U-shaped hole 123 of the differential pair unit 12.

[0066] like Fig.13 and Fig.14 As shown, the second connector 400 includes a housing 7, and the housing 7 helps to support a thin sheet 60. Fig.15 As shown, a sheet body 60 includes a plurality of sheet units 6T and sheets 6aT, and the sheet units 6T and 6a are cross-stacked. Figures 16 to 18 As shown, the metal channels in one type of sheet unit 6T are offset vertically from the metal channels in another type of sheet unit 6aT.

[0067] like Fig.19 As shown, each of the sheet units 6T includes a plastic support 6, a shielding frame 4, and a terminal assembly 5. Fig.21 The stamped metal terminal assembly 5 is formed into a plastic bracket 6 in the mold to form an IM part such as Fig. 20 As shown, the shield frame 4 is assembled on one side of the IM part to form the following Fig.19 A thin sheet unit is shown.

[0068] like Figure 24-26As shown, the low crosstalk backplane connector shielding frame 4 has a plurality of differential pair accommodating grooves 41_1, 41_2, 41_3, and the accommodating groove depth a, as shown in FIG. Fig.26 As shown, it is greater than 0.35mm. Fig.23 As shown, the signal differential pair terminal pairs 50 are installed in these differential pair receiving grooves, which can well isolate the differential pair signals and reduce the crosstalk between them.

[0069] like Fig.24 and Fig. 22 As shown, one end or both ends of each U-shaped receiving groove side wall 411 are designed with wedge-shaped blocks 4111, 4112, which can be wedged into the connecting slot 5111 of the signal return path channel, and are used to connect the signal return path channel contact portion 511, the optional signal return path channel adapter 512, and the signal return path channel tail portion 513 in series to jointly constitute the signal return path channel 51.

[0070] like Fig.24 and Fig.25 As shown, the contact portion of the differential pair receiving slot 41_3 is designed with one or more long elastic arm terminals 42, namely the first elastic arm terminals, and one or more short elastic arm terminals 43, namely the second elastic arm terminals, to provide different connector insertion depths.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector, characterized in that: include: A housing having a docking surface; A sheet body supported by the housing, the sheet body having a first edge, a second edge and a first side; A signal differential pair of terminals, supported by the thin sheet body, the signal differential pair of terminals having a contact portion extending from the first edge, a tail portion extending from the second edge, and a body portion extending between the contact portion and the tail portion, and the edges of a plurality of pairs of signal differential pair of terminals are aligned; A shielding frame, supported by the first side of the sheet body, the shielding frame having a U-shaped receiving groove, the U-shaped receiving groove having two side walls, the U-shaped receiving groove being aligned with the signal differential pair of terminals, the two side walls being located on both sides of the signal differential pair of terminals, wherein the contact portion of the shielding frame has one or more first elastic arm terminals and one or more second elastic arm terminals, the length of the first elastic arm terminal being longer than the length of the second elastic arm terminal; A grounding terminal, supported by the sheet body and positioned adjacent to the signal differential pair of terminals, the grounding terminal having a grounding contact portion and a grounding tail portion, the grounding terminal and the signal differential pair of terminals being arranged in a row; A signal return path channel, the signal return path channel includes a signal return path channel adapter, the signal return path channel adapter is clamped in the middle of the side wall of the U-shaped receiving groove, and the signal return path channel is formed by connecting a grounding contact portion of the grounding terminal, the side wall of the U-shaped receiving groove, the signal return path channel adapter and a grounding tail of the grounding terminal in series; The grounding terminal is a first grounding terminal, the connector further comprises a second grounding terminal identical to the first grounding terminal, the second grounding terminal and the first grounding terminal are located on both sides of the signal differential pair terminal pair, and the side wall of the U-shaped receiving groove of the shielding frame is electrically connected to the first grounding terminal and the second grounding terminal; The first grounding terminal and the second grounding terminal are provided with a plurality of slots at the grounding contact portion and the grounding tail portion, and the shielding frame comprises a plurality of wedge-shaped blocks, and the plurality of wedge-shaped blocks are tightly fitted and connected with the plurality of slots one by one.

2. A connector according to claim 1, characterized in that: The U-shaped receiving groove extends from the first edge to the second edge along the body of the signal differential terminal pair.

3. A connector according to claim 1, characterized in that: The first edge and the second edge are at a right angle to each other.

4. A connector system, characterized in that: include: A first connector and a second connector that mate with each other; The first connector comprises: A U-shaped base, a differential pair unit is arranged at the bottom of the U-shaped base; the differential pair unit has a differential pair hole and a U-shaped hole; A differential pair terminal pair is supported by the U-shaped base, and the edges of two differential pair terminals inside the differential pair terminal pair are aligned with the edges; A groove-type terminal supported by the U-shaped base, the groove-type terminal having a body and two side wings extending from the body, thereby having a U-shape, the side wings having a butt-jointed edges; the differential pair terminal pair and the groove-type terminal are respectively installed in the differential pair hole and the U-shaped hole of the differential pair unit; The second connector is the connector described in any one of claims 1-3.

5. A connector system according to claim 4, characterized in that: The U-shaped receiving groove on the shielding frame extends from the first edge to the second edge along the body of the signal differential terminal pair.

6. A connector system according to claim 4, characterized in that: The differential pair units are distributed in an array, and air holes are arranged between the groove-type terminals in the differential pair units and the differential pair terminals.

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