Connection system for reducing signal attenuation

Abstract

The invention discloses a connection system for reducing signal attenuation, and belongs to the technical field of communication equipment. The connection system comprises a connector body and a PCB. The connector body comprises a shell, a terminal fixing piece, a cable fixing piece, a plurality of high-speed signal terminals, a high-speed cable and a grounding shielding conductor. The grounding shielding conductors and the high-speed signal terminals are fixed on the terminal fixing parts, signal lines of the high-speed cables are welded with the high-speed signal terminals, and the adjacent grounding shielding conductors are connected together and are connected with grounding lines of the high-speed cables; the grounding shielding conductor, the terminal fixing piece and the high-speed cable are fixedly arranged on the cable fixing piece to form an integrated structure; the PCB is provided with a groove, and the cable fixing member passes through the groove on the PCB and then is fixedly connected with the housing. According to the invention, the wiring length of the riser end is greatly shortened by canceling the mutual matching form of the connector at the riser end in actual use, so that the attenuation of the riser end is reduced, and the purpose of reducing the signal attenuation of the whole link is achieved.

Description

Technical Field

[0001] This invention relates to the field of communication equipment technology, and more specifically to a connection system for reducing signal attenuation. Background Technology

[0002] As the data communication field demands increasingly higher signal transmission rates, the signal rate has increased from 16Gbps to 32Gbps and 64Gbps since the upgrade from PCIe Gen4 to PCIe Gen5 and even PCIe Gen6. In the entire signal transmission system, apart from the fixed losses of PCIe cards and chips, the methods to increase the signal transmission rate are to reduce the signal attenuation of connectors and cables, and to reduce the signal trace length at the motherboard and riser card ends.

[0003] A riser card refers to a functional expansion card or adapter card that plugs into a PCI-E interface. It is a new generation of bus interface. In traditional systems, the transmission link needs to connect one end of a high-speed cable to the motherboard connector, and the other end of the high-speed cable connects to the riser card connector to transmit the signal to the riser card. Then, through the internal wiring of the riser card, the signal is transmitted to the Slot+PCIe card's gold fingers. However, this transmission link has a bottleneck when facing PCIe Gen5 and cannot handle PCIe Gen6. Existing technologies have technical problems such as signal attenuation due to the excessively long system transmission link, which makes it impossible to meet the requirements of higher-speed signal transmission. Summary of the Invention

[0004] The purpose of this invention is to provide a connection system that reduces signal attenuation. In practical use, by eliminating the inter-connector mating method at the riser end, the trace length at the riser end is significantly shortened, thereby reducing signal attenuation at the riser end and achieving the goal of reducing signal attenuation throughout the entire link.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A connection system for reducing signal attenuation includes a connector body and a PCB board. The connector body includes a housing, terminal fasteners, cable fasteners, and several high-speed signal terminals, high-speed cables, and a grounding shield conductor.

[0007] The grounding shield conductor and high-speed signal terminal are fixed on the terminal fixing component. The signal line of the high-speed cable is soldered to the high-speed signal terminal. Adjacent grounding shield conductors are connected together and connected to the grounding line of the high-speed cable. The grounding shield conductor, terminal fixing component, and high-speed cable are fixed on the cable fixing component to form an integrated structure.

[0008] The PCB board has grooves, and the cable fixing components pass through the grooves on the PCB board and are fixedly connected to the outer shell. After the outer shell and the PCB board are fixedly connected, they form an integrated structure.

[0009] Among them, the cable fastener is formed by encapsulating the grounding shield conductor, terminal fastener and high-speed cable into an integrated structure through injection molding.

[0010] Further optimization includes the fixed installation of low-speed and power terminals on the outer casing, the provision of terminal mating holes on the PCB board, and a fisheye structure at the tail end of the low-speed and power terminals that matches the terminal mating holes.

[0011] The outer casing and the PCB board are fixedly connected by a bolt kit.

[0012] Furthermore, barbs and protrusions are provided on the high-speed signal terminals, low-speed and power terminals, and grounding shield conductor. The barbs and protrusions on the low-speed and power terminals are used to make an interference fit with the mounting grooves provided on the housing. The barbs and protrusions on the high-speed signal terminals and grounding shield conductor are used to make the irregular shape more conducive to fixing in the cable fixing component during the injection molding process.

[0013] The cable fixing component has notches on both sides, with slide rails installed inside the notches. The outer shell has an extension, with a locking groove on the extension, which cooperates with the slide rail.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention connects a high-speed cable to a high-speed signal terminal via direct contact soldering, while the other end of the high-speed cable is mated to the motherboard connector using a traditional method. By eliminating the mating method of the riser connector, the trace length at the riser end can be greatly shortened, thereby effectively reducing signal attenuation at the riser end and thus reducing signal attenuation throughout the entire link. Compared with existing technologies, eliminating the mating connector at the riser end can effectively reduce product costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the outer shell of the present invention.

[0019] Figure 3 This is a schematic diagram of the overall structure of the integrated structure formed by fixing the grounding shield conductor, cable fixing component, and high-speed cable onto the cable fixing component according to the present invention.

[0020] Figure 4 This is a schematic diagram showing the connection relationship between the high-speed signal terminal and the terminal fixing component of the present invention.

[0021] Figure 5 This is a schematic diagram showing the connection relationship between the grounding shield conductor and the high-speed cable of the present invention.

[0022] Figure 6 This is a schematic diagram illustrating the usage state of the present invention.

[0023] Figure 7 This is a schematic diagram showing the connection relationship between the plug-in card of the present invention and the high-speed signal terminal, low-speed signal terminal, and power supply terminal.

[0024] Figure label:

[0025] 101-PCB board, 102-Housing, 103-Cable fastener, 104-Terminal fastener, 105-High-speed signal terminal, 106-High-speed cable, 107-Grounding shield conductor, 108-Groove, 109-Low-speed and power terminal, 110-Terminal mating hole, 111-Fisheye structure, 112-Bolt, 113-Barb, 114-Protrusion, 115-Notch, 116-Slide rail, 117-Cable slot, 118-Card insertion, 119-Mounting groove, 120-Extension. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Example 1

[0034] See Figures 1-7This embodiment discloses a connection system for reducing signal attenuation, including a connector body and a PCB board 101. The connector body includes a housing 102, a terminal fixing member 104, a cable fixing member 103, a plurality of high-speed signal terminals 105, a high-speed cable 106, and a grounding shielding conductor 107.

[0035] The grounding shield conductor 107 and the high-speed signal terminal 105 are fixed on the terminal fixing member 104. The signal line of the high-speed cable 106 is soldered to the high-speed signal terminal 105. Adjacent grounding shield conductors 107 are connected together and connected to the grounding line of the high-speed cable 106. The grounding shield conductor 107, the terminal fixing member 104 and the high-speed cable 106 are fixed on the cable fixing member 103 to form an integrated structure.

[0036] The PCB board 101 has a groove 108. The cable fastener 103 passes through the groove 108 on the PCB board 101 and is fixedly connected to the outer shell 102. The outer shell 102 and the PCB board 101 are fixedly connected to form an integrated structure.

[0037] Among them, the cable fixing component 103 is formed by encapsulating the grounding shield conductor 107, the terminal fixing component 104 and the high-speed cable 106 through injection molding process to form an integrated structure; such an integrated structure is more convenient to use later.

[0038] The housing 102 is fixedly provided with low-speed and power terminals 109, the PCB board 101 is provided with terminal mating holes 110, and the tail end of the low-speed and power terminals 109 is provided with a fisheye structure 111 that matches the terminal mating holes 110; this can integrate high-speed, low-speed and power signals into one connector, reduce the number of link adapters in the connector, and make the connector structure more compact.

[0039] The outer casing 102 is fixedly connected to the PCB board 101 by a bolt kit, which includes a bolt 112 and a nut.

[0040] Further, the high-speed signal terminal 105, the low-speed and power terminal 109, and the grounding shield conductor 107 are all provided with barbs 113 and protrusions 114. The barbs and protrusions 114 on the low-speed and power terminal 109 are used to interference fit with the mounting groove provided on the housing 102. The barbs 113 and protrusions 114 on the high-speed signal terminal 105 and the grounding shield conductor 107 are designed to make the irregular shape more conducive to fixing in the cable fixing component 103 during the injection molding process.

[0041] This invention employs a two-stage connection. After the outer shell 102 is fixedly connected to the PCB, the low-speed and power terminals 109 are fixedly connected to the PCB 101. Stable signal transmission can be ensured without re-soldering, thus ensuring stable signal transmission while also reducing costs. It also facilitates subsequent disassembly, assembly, and maintenance.

[0042] The cable fixing component 103 has notches 115 on both sides, and a slide rail 116 is provided in the notches 115. The outer shell 102 has an extension 120, and the extension 120 has a locking groove 119, which cooperates with the slide rail 116.

[0043] The slide rail 116 serves as a guide, making the connection between the cable fixing component 103 and the housing 102 smoother.

[0044] In actual use, the extension 120 is provided with a hook, and the cable fastener 103 is provided with a slot in the notch 115. The cable fastener 103 and the outer shell 102 are fixedly engaged by the hook and the slot.

[0045] To further optimize the connection between the housing 102 and the cable fastener 103, an elastic element is provided at the notch 115 to ensure self-locking after connection. The elastic element is a strong spring or an elastic pad made of elastic material such as rubber or silicone. When the housing 102 and the cable fastener 103 are connected, the elastic element is pressed down, causing deformation to ensure the engagement of the hook and the slot. After release, the elastic element automatically locks the hook and the slot together.

[0046] In a further optimization, in this embodiment, the grounding shield conductor 107 includes a grounding contact conductor on each of the left and right sides and a shield conductor below. The grounding shield conductor is made of metal material and is manufactured through a cutting and bending process.

[0047] In the system, two adjacent grounding shield conductors 107 are connected together by shielding contacts of different heights on the left and right sides to form a conductive path. They are then connected to the grounding wire of the high-speed cable 106 through the cable slot 117, thereby connecting all grounding conductors and forming a shielding effect. This reduces crosstalk in the system and ensures the integrity of signal transmission.

[0048] Example 2

[0049] See Figure 5 This embodiment is a further optimization based on the first embodiment. In this embodiment, a cable slot 117 is provided on the grounding shield conductor 107. The cable slot 117 is used to clamp and fix the aluminum foil of the high-speed cable 106. The connected grounding shield conductors 107 are connected in series by overlapping; thereby fixing the cable.

[0050] As an alternative, in actual use, the width of the cable slot 117 is smaller than the width of the cable. Piercing blades are provided on both sides of the cable slot 117. When the high-speed cable 106 is inserted into the cable slot 117, the piercing blades pierce the outer sheath of the high-speed cable 106, allowing the blades to contact the aluminum foil layer of the high-speed cable 106. After the grounding shield conductor 107 is fully overlapped, not only can all grounding signals in the connector be quickly connected to the grounding core in the high-speed cable 106 to form a shield and improve signal transmission integrity, but the pierced high-speed cable 106 can also be fixed, improving cable stability.

[0051] Meanwhile, the cable fastener 103 forms an integrated structure by encapsulating the grounding shield conductor 107, the terminal fastener 104, and the high-speed cable 106 through injection molding, thus ensuring the stability of the contact between the piercing blade and the aluminum foil layer of the high-speed cable 106.

[0052] The outer shell is made of plastic.

[0053] In addition, this embodiment also discloses an assembly method for a connection system that reduces signal attenuation, specifically including the following steps:

[0054] Step 1: Press the high-speed cable 106 into the cable slot of the grounding shield conductor 107 to form the high-speed cable 106 grounding conductor assembly. The cable slot on the grounding shield conductor 107 directly holds the aluminum foil layer of the high-speed cable 106, so that the grounding shield conductor 107 is connected to the grounding end of the high-speed line, and can play a grounding role without welding.

[0055] Step 2: Fix the high-speed signal terminal 105 onto the terminal fixing part 104 using an injection molding process;

[0056] Step 3: Solder the high-speed cable 106 signal core in the high-speed cable 106 grounding conductor assembly obtained in Step 1 to the bottom surface of the high-speed signal terminal 105;

[0057] At this time, the left and right sides of the two adjacent grounding shield conductors 107 naturally abut against each other, so that all the grounding shield conductors 107 are connected in series to form a shielding effect, which improves the integrity of signal transmission.

[0058] Step 4: Fix the grounding conductor assembly of the high-speed cable 106 and the high-speed signal terminal 105, which were welded in Step 3, together into the cable fixing component 103 through injection molding process;

[0059] During this process, the two adjacent grounding shield conductors 107 that were originally offset against each other become even more tightly offset after being squeezed by the high-pressure plastic in the injection molding process.

[0060] Step 5: Assemble the low-speed and power terminals 109 into the plastic housing 102 by pressing them in; the protrusions 114 and barbs 113 on the terminals form an interference fit with the mounting grooves on the plastic housing 102, so that the terminals are more stably assembled on the plastic housing 102.

[0061] Step 6: Connect the housing 102 with low-speed and power terminals 109 to the PCB board 101 via press-fit.

[0062] At the same time, the cable fixing member 103, which has a high-speed cable 106, a high-speed signal terminal 105, and a grounding shield conductor 107, is fixed to the plastic housing 102 by the locking part of the housing 102 and the locking part of the terminal fixing member 104.

[0063] The press-fit method is as follows: the fisheye structure 111 at the tail end of the low-speed and power terminal 109 has a maximum width that is slightly larger than the terminal mating hole 110 of the PCB board 101. The fisheye structure 111 deforms during the process of being pressed into the terminal mating hole 110, thereby being pressed into the terminal mating hole 110 and simultaneously making close contact with the terminal mating hole 110, forming a holding force.

[0064] Step 7: Secure the connector to the PCB board 101 with screws and nuts, and then insert the card 118 into the connector slot.

[0065] It should be noted that in actual use, steps 6 and 7 can be modified as follows:

[0066] Step 601: The cable fixing piece 103 with high-speed cable 106, grounding shield conductor 107 and high-speed signal terminal 105 engages with the hook and slot to stably fix it on the housing 102, forming a complete connector;

[0067] Step 701: The connector formed after connection in step 601 is crimped onto the PCB board 101 and fixed to the PCB board 101 by screws and nuts.

[0068] The assembly method disclosed in this embodiment can achieve the purpose of rapid assembly.

[0069] Example 3

[0070] This embodiment is basically the same as the previous embodiment, except that in this embodiment, the low-speed and power signal lines connected to the low-speed and power terminal 109 and the high-speed signal lines connected to the high-speed signal terminal 105 are all soldered onto the corresponding low-speed and power terminals and high-speed signal terminals of the connector. The high-speed cables, specifically the high-speed, low-speed and power cables, are bundled together and the resulting connector is fixed to the PCB board with bolts or screws.

[0071] In practical use, high-speed cables are led out from the side of the connector terminals, specifically from the left or right end.

[0072] Of course, in actual use, high-speed cables can also be led out from below the connector terminals.

[0073] Further optimization allows for the creation of additional grooves on the PCB board to accommodate multiple connector terminals in practical applications. In this embodiment, the connector terminal is the connector body.

[0074] In addition, in practical use, the connector body can be used directly as a female cable head without the need for a PCB board.

[0075] As an alternative, in practical applications, the low-speed and power terminals are directly crimped onto the PCB board, while the high-speed cables are directly soldered to the high-speed signal terminals from the side of the connector body. This allows for selection of the routing method based on different application scenarios.

[0076] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connection system for reducing signal attenuation, comprising a connector body and a PCB board, characterized in that: The connector body includes a housing, terminal fasteners, cable fasteners, several high-speed signal terminals, high-speed cables, and a grounding shield conductor; The grounding shield conductor and high-speed signal terminal are fixed on the terminal fixing component. The signal line of the high-speed cable is soldered to the high-speed signal terminal. Adjacent grounding shield conductors are connected together and connected to the grounding line of the high-speed cable. The grounding shield conductor, terminal fixing component, and high-speed cable are fixed on the cable fixing component to form an integrated structure. The PCB board has grooves, and the cable fixing components pass through the grooves on the PCB board and are fixedly connected to the outer shell. After the outer shell and the PCB board are fixedly connected, they form an integrated structure.

2. The connection system for reducing signal attenuation according to claim 1, characterized in that: The cable fastener is formed by encapsulating the grounding shield conductor, terminal fastener, and high-speed cable into an integrated structure through injection molding.

3. The connection system for reducing signal attenuation according to claim 1, characterized in that: The outer casing is fixedly equipped with low-speed and power terminals, and the PCB board is provided with terminal mating holes. The tail end of the low-speed and power terminals is provided with a fisheye structure that matches the terminal mating holes.

4. The connection system for reducing signal attenuation according to claim 1, characterized in that: The outer casing is fixedly connected to the PCB board using a bolt kit.

5. A connection system for reducing signal attenuation according to claim 3, characterized in that: The high-speed signal terminals, low-speed and power terminals, and grounding shield conductors are all equipped with barbs and protrusions. The barbs and protrusions on the low-speed and power terminals are used to make an interference fit with the mounting grooves on the housing. The barbs and protrusions on the high-speed signal terminals and grounding shield conductors are used to make the irregular shape more convenient for fixing in the cable fixing parts during the injection molding process.

6. A connection system for reducing signal attenuation according to any one of claims 1-5, characterized in that: The cable fixing component has notches on both sides, and a slide rail is installed inside the notch. The outer shell has an extension, and the extension has a locking groove that cooperates with the slide rail.

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