High-speed and high-density storage slot thin-film units and components

Abstract

The present invention discloses a high-speed and high-density thin-sheet unit, which belongs to the technical field of electrical connectors. The thin-sheet unit comprises 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 main 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 high-speed and high-density receiving slot sheet unit and assembly. 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, the single-channel high-speed data transmission rate of most backplane connectors in China is mostly below 28Gpbs, which cannot meet the usage requirements. How to design an electrical connector with high-speed data transmission rate has become the research direction of technicians in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed and high-density storage slot sheet unit and assembly to solve the above technical problems.

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

[0006] The high-speed and high-density thin-sheet unit comprises: a thin-sheet body, which is an insulator support, having a first edge, a second edge and a first side;

[0007] 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;

[0008] 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;

[0009] 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;

[0010] 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.

[0011] 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 pair terminal pair; the signal differential pair terminal pair is located in the U-shaped receiving groove on the shielding frame.

[0012] 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.

[0013] 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.

[0014] Furthermore, the first edge and the second edge form a right angle with each other.

[0015] Based on the above-mentioned high-speed and high-density thin-sheet unit, the present invention further provides a high-speed and high-density thin-sheet unit assembly, which is formed by overlapping two thin-sheet units;

[0016] The sheet unit comprises:

[0017] A thin sheet body is an insulator support 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 metal channel in one of the sheet units is misaligned relative to the metal channel in another sheet unit.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The invention has a novel structure, and adopts the thin-sheet unit and the assembly to improve the crosstalk between differential pairs, thereby increasing the single-channel transmission rate of the high-speed data communication backplane connector, so that the transmission rate can meet 56Gbps, 122Gbps or even higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the sheet unit assembly;

[0026] Figure 2 yes Figure 1 Schematic diagram from another perspective;

[0027] Figure 3 yes Figure 1 Schematic diagram from another perspective, showing the misalignment of metal pathways;

[0028] Figure 4 It is a schematic diagram of a thin sheet unit;

[0029] Figure 5 yes Figure 4 Schematic diagram after removing the shield frame;

[0030] Figure 6 yes Figure 5 Schematic diagram after removing the plastic bracket, showing the metal pathways;

[0031] Figure 7 It is a schematic diagram of the signal loop ground path;

[0032] Figure 8 It is a schematic diagram of a signal differential pair of terminals placed in a U receiving groove of a shielding frame;

[0033] Fig. 9 is a schematic diagram of the shielding frame;

[0034] Fig.10 yes Fig. 9 Another schematic diagram of;

[0035] Fig.11 It is a schematic diagram of the U-shaped groove depth a. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1:

[0038] In order to improve the transmission rate of high-speed data communication backplane connectors, the present invention provides a high-speed high-density accommodating slot thin-film unit and assembly. By using the thin-film unit and assembly, the crosstalk between the signal differential pair terminals can be improved.

[0039] At the same time, in order to make the high-speed and high-density storage slot sheet unit and assembly have good comprehensive performance, the patent of the present invention adopts the following technical solutions:

[0040] In order to achieve the purpose of reducing crosstalk, the technical solution adopted by the patent of this invention is: a plurality of U-shaped receiving grooves are stamped out of strip material, and a group of U-shaped receiving grooves are connected in series to form a signal differential pair receiving groove. The shielding frame is provided with a plurality of signal differential pair receiving grooves, and each signal differential pair receiving groove is connected by spokes. The side wall height of the U-shaped receiving groove is higher than the signal differential pair in the signal differential pair receiving groove. Each differential pair signal channel is arranged in the U-shaped receiving groove of the shielding frame. The three-sided semi-enclosed structure of the U-shaped receiving groove effectively isolates the crosstalk between the signal differential pair terminals.

[0041] In order to achieve the purpose of reducing crosstalk, the technical solution adopted by the patent of the present invention is: multiple signal return path channels are set up, and each signal return path channel is composed of a ground contact portion that cooperates with the corresponding connector, the side wall of the U-shaped receiving groove of the shielding frame, and the ground tail in series.

[0042] In order to reduce the effect of the wire piles at different mating depths, the technical solution adopted by the present invention is: one or more long elastic arm terminals are arranged on the signal return path channel of the contact portion of the differential pair receiving slot passage, and one or more short elastic arm terminals are arranged at the same time to match different connector insertion depths.

[0043] In order to ensure the correct position of the signal differential pair terminals in the signal differential pair accommodating groove, the technical solution adopted by the patent of the present invention is: a group of positioning holes are designed on the shielding frame to correctly position and fix the shielding frame on the plastic sheet, thereby ensuring the correct position of the signal differential pair in the signal differential pair accommodating groove.

[0044] Figures 1 to 3 The figure shows a stacked view of a sheet unit 6T and another sheet unit 6aT. The sheet unit 6T and another sheet unit 6aT can be cross-stacked to form a sheet unit assembly. Figure 3 It is shown that the metal channels in one thin film unit 6T are offset up and down from the metal channels in another thin film unit 6aT.

[0045] exist Figure 5 The stamped metal terminal assembly 5 is formed on the mold, and the plastic bracket 6 is formed in the mold to form an IM part, such as Figure 6 As shown, the shield frame 4 is assembled on one side of the IM part to form the following Figure 4 A thin sheet unit is shown.

[0046] Figures 9 to 11 The low crosstalk backplane connector shielding frame 4 has a plurality of differential pair receiving grooves 41_1, 41_2, 41_3, and the depth a of the differential pair receiving grooves is greater than 0.35 mm. The signal differential pair terminal pairs 50 are installed in these differential pair receiving grooves, such as Figure 7-8 As shown, this can make the signal differential pair terminals well isolated and reduce the crosstalk between them. Each U-shaped groove side wall 411 is designed with a wedge-shaped card block 4111 and 4112 at one end or both ends, which can be wedged into the connection card slot 5111 of the signal return path channel, and is 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 513 in series to form a signal return path channel 51.

[0047] The contact portion of a single differential pair receiving slot 41_3 is designed with one or more long elastic arm terminals 42, namely first elastic arm terminals, and one or more short elastic arm terminals 43, namely second elastic arm terminals, to provide different connector insertion depths.

[0048] The present invention analyzes and studies the existing backplane connector, isolates the crosstalk between signals on the signal differential pair terminals by utilizing the semi-enclosed structure of the U-shaped receiving groove, improves and optimizes a high-speed and high-density receiving groove sheet unit and component for a low-crosstalk backplane connector, thereby improving the crosstalk of the high-speed backplane connector, thereby improving the single-channel transmission rate of the high-speed data communication backplane connector.

[0049] 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. High-speed and high-density sheet unit, characterized in that: include: A thin sheet body is an insulator support, wherein the thin sheet body has 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 comprising a signal return path channel adapter, the signal return path channel adapter being clamped in the middle of the side wall of the U-shaped receiving groove, the signal return path channel being formed by connecting in series 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 portion of the grounding terminal; The grounding terminal is a first grounding terminal, the high-speed and high-density thin-film unit further includes 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. The high-speed and high-density sheet unit according to claim 1, characterized in that: The U-shaped accommodating groove on the shielding frame extends from the first edge to the second edge along the body of the signal differential pair terminal pair; the signal differential pair terminal pair is located in the U-shaped accommodating groove on the shielding frame.

3. The high-speed and high-density sheet unit according to claim 1, characterized in that: The first edge and the second edge are at a right angle to each other.

4. High-speed and high-density sheet unit assembly, characterized in that: The high-speed and high-density thin-sheet unit assembly is formed by cross-overlapping of two thin-sheet units described in any one of claims 1 to 3.

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