An electrical connector assembly

Abstract

The present application relates to the technical field of connector, especially to an electric connector assembly. The electric connector assembly comprises a shell, a PCB adapter plate is arranged in the shell, two or more rows of non-ground cables are electrically and fixedly connected to the PCB adapter plate, two or more rows of connecting pads are arranged on the front and back surfaces of the PCB adapter plate respectively, each row of connecting pads comprises a row of signal pads and ground pads, the core wire of the non-ground cable is electrically and fixedly connected to the signal pad on the front surface, the conductive outer sheath is electrically connected to the ground pad on the front surface, the signal pad and the ground pad on the back surface are used for being electrically connected to the corresponding terminals of a PCB female plate or being electrically connected to the corresponding terminals of an adapter socket and then being electrically connected to the PCB female plate, the PCB adapter plate is internally arranged with a conductive circuit to correspondingly connect the connecting pads on the front and back surfaces of the PCB adapter plate, and the electric connector assembly further comprises a load bottom support which is locked and connected to the shell. The electric connector assembly can realize multi-row high-density wiring and greatly improve the performance of the connector.

Description

Technical Field

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

[0002] High-speed cable connectors are divided into grounded cable connectors and groundless cable connectors, and are usually single-row cables. Grounded cable connectors usually have the following shortcomings in application and assembly: (1) ground wires need to be soldered during soldering, resulting in low soldering efficiency; (2) to save space, the ground wires of two adjacent cables usually need to be soldered to one pad, increasing the difficulty of the soldering process and reducing performance stability; (3) under the same wire gauge, grounded cables are larger in size and occupy more space than groundless cables. Therefore, groundless cable connectors are becoming increasingly popular.

[0003] Existing groundless cable connectors are typically single-sided single-row cables or double-sided single-row cables. For example, the groundless cable connector disclosed in Chinese invention patent application CN110165444A includes a circuit board with cable pads and ground pads. The groundless cable is located on both sides of the circuit board and electrically connected to the cable pads. The metal shielding layer of the groundless cable is electrically connected to the ground pads. The groundless cable is electrically fixed to the tail of the circuit board. The head of the circuit board is connected to other socket-like components in the form of gold fingers to form a link.

[0004] The problem with existing groundless cable connectors is that the circuit board head connects to other socket components via gold fingers. These gold fingers typically need to be arranged in the same row, and due to space constraints, the number of gold fingers is limited, which restricts the number of cables. This usually results in a single row of cables on one side or one row of cables on each side, thus limiting connector performance improvements. Increasing the number of cables requires increasing the width of the circuit board to increase space, but this hinders connector miniaturization design. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical connector assembly to solve the problems of limited cable layout and low connector performance in existing groundless cable connectors.

[0006] To achieve the above objectives, the electrical connector assembly of the present invention adopts the following technical solution:

[0007] An electrical connector assembly includes a housing, within which a PCB adapter board is disposed. Two or more rows of groundless cables are electrically fixed to the PCB adapter board. The housing has a through-hole for the groundless cables to pass through and exit the housing. The PCB adapter board has two or more rows of pads arranged longitudinally and laterally on both its front and back sides. Each row of pads includes a row of signal pads and a ground pad. The core wire of the groundless cable is electrically fixed to the signal pad on the front side, and its conductive outer sheath is electrically connected to the ground pad on the front side. The signal and ground pads on the back side are used for contact and electrical connection with corresponding terminals on a PCB motherboard, or for contact and electrical connection with corresponding terminals of an adapter socket, thereby connecting to the PCB motherboard. Conductive lines are arranged inside the PCB adapter board to connect the pads on both sides. The electrical connector assembly also includes a load base, which is locked to the housing to press and fix the PCB adapter board inside the housing.

[0008] Beneficial Effects: This invention proposes a novel electrical connector assembly. It features two or more rows of solder pads arranged longitudinally and laterally on both sides of a PCB adapter board. The front solder pads are used for electrical cable bonding, while the back solder pads can be directly bonded to corresponding terminals on the PCB motherboard or to the corresponding terminals of the adapter socket, thus connecting to the PCB motherboard. Compared to existing technologies that use a row of gold fingers on the front of the PCB adapter board for insertion into the adapter socket, this invention's connector assembly bonds the entire back of the PCB adapter board to the adapter socket. This allows for a greater number of solder pads on the back of the PCB adapter board to bond to corresponding terminals, significantly increasing the number of solder pads for connection. Simultaneously, multiple rows of solder pads on the front of the PCB adapter board connect to more rows of cables, and internal wiring connects the solder pads on both sides, achieving high-density wiring and significantly improving connector performance.

[0009] Furthermore, each row of wiring pads on the front of the PCB adapter board contains rows of signal pads and rows of ground pads arranged side by side in the horizontal direction.

[0010] Beneficial effects: When connecting groundless cables, a small section of the core wire can be stripped from the front end of the cable along the cable's extension direction and electrically fixed to the signal pad. A small section of the conductive outer sheath can be stripped from the back of the exposed core wire and electrically contacted to the ground pad. This makes it easier to connect the core wire, the conductive outer sheath, and the corresponding pads. Moreover, this reduces the space occupied by each row of wiring pads, allowing for more rows of wiring pads to be arranged on the PCB adapter board to connect more rows of cables.

[0011] Furthermore, the ground pads of each row of wiring pads on the front of the PCB adapter board are comb-shaped, and rows of signal pads are interspersed between the comb teeth of the ground pads.

[0012] Beneficial effect: This allows the ground pad to form a semi-enclosed structure with the signal pad. The three sides of the signal pad are shielded by the comb teeth on both sides and the comb handle on one side, which can achieve a good shielding effect for the signal pad.

[0013] Furthermore, the ground pads of two adjacent rows of wiring pads on the front of the PCB adapter board are electrically connected.

[0014] Beneficial effects: During signal transmission, especially when transmitting differential signals, the requirements for signal shielding are very high. This setting ensures that the area around each signal pad is at ground potential, which can further improve the shielding effect.

[0015] Furthermore, the signal pads and ground pads of each row of wiring pads on the back of the PCB adapter board are arranged alternately in the longitudinal direction.

[0016] Beneficial effect: This allows the signal pad located in the middle to be shielded by two adjacent ground pads.

[0017] Furthermore, the PCB adapter board is provided with a shielding structure for shielding the front ends of each cable, and the shielding structure is electrically connected to the ground pad on the front side of the PCB adapter board.

[0018] Beneficial effects: By setting up a shielding structure to shield the front ends of each cable, electromagnetic interference during current transmission can be avoided as much as possible, thereby ensuring the overall electrical performance of the connector.

[0019] Furthermore, the shielding structure includes horizontal shielding strips and vertical shielding strips. Multiple horizontal shielding strips are arranged at intervals to separate adjacent cables in the same row. Multiple vertical shielding strips are arranged at intervals to separate cables in two adjacent rows. The horizontal shielding strips are electrically fixed to the ground pad on the front of the PCB adapter board. Two adjacent horizontal shielding strips clamp the conductive outer casing of the cable without ground wire in between. The vertical shielding strips are electrically fixed to the upper part of the horizontal shielding strips and press the conductive outer casing downwards.

[0020] Beneficial effects: This setup can fully ensure the reliable contact between the conductive outer sheath of the groundless cable and the ground pad on the front of the PCB adapter board. Moreover, it ensures that the conductive outer sheath of each groundless cable is surrounded by the ground pad, the horizontal shielding strips on both sides, and the vertical shielding strip on the top, further improving the shielding effect.

[0021] Furthermore, the upper part of the horizontal shielding strip is provided with positioning teeth, and the vertical shielding strip is provided with corresponding shielding strip positioning holes. The positioning teeth are inserted into the shielding strip positioning holes and electrically fixed to the shielding strip positioning holes.

[0022] Beneficial effect: This allows for the pre-positioning of the longitudinal shielding strip by first engaging the positioning teeth on the transverse shielding strip with the positioning holes on the longitudinal shielding strip, and then electrically connecting the longitudinal and transverse shielding strips, making it more convenient to install the longitudinal shielding strip onto the transverse shielding strip.

[0023] Furthermore, the bottom of the horizontal shielding strip is provided with several pins at intervals, and the PCB adapter board is provided with several through holes accordingly, with each pin being inserted into a corresponding through hole.

[0024] Beneficial effects: By setting pins at the bottom of the horizontal shielding strip and correspondingly setting several through holes on the PCB adapter board, the pins can be inserted into the through holes to pre-position the horizontal shielding strip on the PCB adapter board. Then, the horizontal shielding strip and the PCB adapter board are electrically fixed, making it easier to install the horizontal shielding strip onto the PCB adapter board.

[0025] Furthermore, the housing is a semi-enclosed structure, and the inner wall of the housing is provided with a stepped surface facing the opening of the housing, and the front of the PCB adapter board is attached to the stepped surface.

[0026] Beneficial effects: By setting a step inside the housing to position the PCB adapter board in the housing, the PCB adapter board is pressed firmly against the step surface during installation, which can prevent the PCB adapter board from shaking inside the housing, thereby ensuring reliable contact between the PCB adapter board and the adapter socket or PCB motherboard.

[0027] Furthermore, the step surface is provided with positioning posts extending perpendicularly to the step surface, and the PCB adapter board is provided with corresponding positioning holes, in which the positioning posts are inserted.

[0028] Beneficial effects: The positioning pins and positioning holes work together to further position the PCB adapter board, preventing the PCB adapter board from shifting and thus ensuring the reliability of electrical contact between the PCB adapter board and the corresponding terminals of the adapter socket or PCB motherboard.

[0029] Furthermore, the front end of the PCB adapter board is provided with a limiting tongue, and the housing is provided with a corresponding slot. A rib is provided at the opening of the slot. The limiting tongue is fitted into the slot, and the rib is stopped on the back of the limiting tongue.

[0030] Beneficial effects: By setting slots and ribs on the housing, which cooperate with the limiting tongue at the front end of the PCB adapter board, the PCB adapter board can be further limited, preventing the front end of the PCB adapter board from detaching from the housing.

[0031] Furthermore, the electrical connector assembly also includes an adapter socket and a PCB motherboard sequentially disposed on the back side of the PCB adapter board. The load backplate is locked to the housing to lock the PCB adapter board, adapter socket and PCB motherboard together. The terminals on the front and back of the adapter socket are respectively attached to the wiring pads on the back of the PCB adapter board and the pads on the PCB motherboard for electrical connection.

[0032] Beneficial effect: The PCB adapter board and the PCB motherboard clamp the socket connector in the middle, so that the terminals on both sides of the socket connector are always kept in an elastic compression state, forming a reliable electrical connection.

[0033] Furthermore, the adapter socket has positioning protrusions on both the front and back sides, a second positioning hole corresponding to the positioning protrusion on the front side on the PCB adapter board, and a positioning mating hole corresponding to the positioning protrusion on the back side on the PCB mother board. The positioning protrusions on the front and back sides are respectively inserted into the second positioning hole and the positioning mating hole.

[0034] Beneficial effect: This makes it easier to lock the PCB adapter board, adapter socket, and PCB motherboard together, ensuring a reliable electrical connection.

[0035] Furthermore, the load base includes an insulating diaphragm and a load back plate, with the insulating diaphragm located on the front side of the load back plate to separate the load back plate from the conductive components on the front side.

[0036] Beneficial effect: This avoids short circuits caused by direct contact between the load backplate and the conductive parts on its front side, thus ensuring connector performance. Attached Figure Description

[0037] Figure 1 This is a schematic diagram showing the electrical connection state between Embodiment 1 of the electrical connector assembly of the present invention and the adapter socket;

[0038] Figure 2 for Figure 1 Exploded view;

[0039] Figure 3 This is a schematic diagram of the shell from a first-person perspective;

[0040] Figure 4 This is a schematic diagram of the shell from a second perspective;

[0041] Figure 5 This is a front view of the PCB adapter board;

[0042] Figure 6 This is a schematic diagram of the back of the PCB adapter board;

[0043] Figure 7 A schematic diagram showing a shielding structure on a PCB adapter board;

[0044] Figure 8 This is a partial schematic diagram of the shielding structure;

[0045] Figure 9 This is a top view of the shielding structure;

[0046] Figure 10 A schematic diagram showing the interaction between the PCB adapter board, adapter socket, and PCB motherboard;

[0047] In the diagram: 1. Long fastening bolt; 2. Housing; 20. Slot; 21. Rib; 22. Stepped surface; 23. Positioning post; 24. Edge retainer; 25. Slot; 26. Long bolt mounting hole; 27. Short bolt mounting hole; 3. Wire fixing frame; 4. Short fastening bolt; 5. Adhesive tape; 6. Groundless cable; 7. PCB adapter board; 70. Long bolt through hole; 71. Pin through hole; 72. U-shaped ground pad; 73. First positioning hole; 74. First 75. Signal pad; 76. First ground pad; 77. Second ground pad; 78. Second signal pad; 79. Limiting tongue; 80. Second positioning hole; 91. Adapter socket; 10. Positioning protrusion; 11. PCB motherboard; 12. Positioning mating hole; 12. Insulating film; 13. Load backplate; 14. Longitudinal shielding strip; 15. Shielding strip positioning hole; 16. Horizontal shielding strip; 17. Pin; 18. Side protrusion; 19. Positioning tooth. Detailed Implementation

[0048] The electrical connector assembly of the present invention has multiple rows of wiring pads on both sides of the PCB adapter board. The front wiring pads are used for electrical fixing of cables, and the back wiring pads are used for contact and electrical connection with the corresponding terminals of the adapter socket or PCB motherboard. The pads on both sides of the PCB adapter board are connected by internal wiring, thereby arranging multiple rows of cables on the PCB adapter board, realizing high-density wiring and improving connector performance.

[0049] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0050] Embodiment 1 of the electrical connector assembly of the present invention:

[0051] like Figure 1 , Figure 2As shown, the electrical connector assembly includes a housing 2, a PCB adapter board 7 installed inside the housing 2, multiple rows of groundless cables 6 electrically fixed to the PCB adapter board 7, an adapter socket 8, a PCB motherboard 9, an insulating film 10, and a load backplate 11 stacked sequentially on the back side of the PCB adapter board 7. The housing 2, PCB adapter board 7, adapter socket 8, PCB motherboard 9, insulating film 10, and load backplate 11 are stacked and locked together by fastening long bolts 1. The housing 2 has a cable passage; the groundless cables 6 extend out of the housing 2 through the cable passage and are fixed and locked by a cable fixing frame 3 to prevent the groundless cables 6 from shaking. The portion of the groundless cables 6 extending out of the housing 2 is wrapped with adhesive tape 5 to further prevent cable shaking.

[0052] In this embodiment, the groundless cable 6 is a differential signal line for transmitting differential signals, including two parallel core wires and an insulating layer, a conductive outer sheath, and an insulating outer sheath sequentially wrapped around the two core wires from the inside out. Figure 5 , Figure 6 As shown, the PCB adapter board 7 is a rectangular board. Both the front and back sides of the PCB adapter board 7 have multiple rows of wiring pads arranged vertically and horizontally. Each row of wiring pads includes a row of signal pads and a row of ground pads. The signal pads on the front of the PCB adapter board 7 are defined as the first signal pad 74, and the ground pads as the first ground pads 75. The signal pads on the back of the PCB adapter board 7 are defined as the second signal pads 77, and the ground pads as the second ground pads 76. The core wire of the groundless cable 6 is electrically fixed to the first signal pad 74, and its conductive outer sheath is electrically connected to the first ground pad 75. The front side of the PCB adapter board 7 also has a U-shaped ground pad 72, which partially surrounds all the first signal pads 74 and the first ground pads 75. On the front side of the PCB adapter board 7, each row of wiring pads contains rows of first signal pads 74 and first ground pads 75 arranged side-by-side in the horizontal direction. The first ground pads 75 are comb-shaped, and the first signal pads 74 are interspersed between the comb teeth of the first ground pads 75, forming a semi-enclosed structure for the first signal pads 74, thus providing a good shielding effect. The first ground pads 75 of adjacent rows of wiring pads are electrically connected to further improve the shielding effect. On the back side of the PCB adapter board 7, each row of wiring pads has second signal pads 77 and second ground pads 76 arranged alternately in the vertical direction. The pads on the back side of the PCB adapter board 7 are used for contact and electrical connection with the corresponding terminals of the adapter socket 8. Conductive lines are laid inside the PCB adapter board 7 to connect the pads on both sides of the PCB adapter board 7. The PCB adapter board 7 also has long bolt holes 70 for inserting long fastening bolts 1.

[0053] like Figure 3 , Figure 4As shown, the housing 2 is a semi-enclosed structure, including a bottom plate, a front side plate, a left side plate, and a right side plate. The rear of the housing 2 has a cable passage for cables to pass through. The inner wall of the housing 2 has a stepped surface 22 facing the opening of the housing. This stepped surface 22 is used to fit against the U-shaped ground pad 72 on the front of the PCB adapter board 7 to limit the positioning of the PCB adapter board 7. The side plate portion of the housing 2 surrounding the stepped surface 22 forms a retaining edge 24, which is used to stop at the edge of the PCB adapter board 7. A positioning post 23 extending perpendicularly to the stepped surface 22 is provided on the stepped surface 22. The positioning post 23 is used to cooperate with the first positioning hole 73 on the PCB adapter board 7 to position the PCB adapter board 7. A slot 25 is provided on the front side plate of the housing 2. A rib 21 is provided at the opening of the slot 25. The slot 25 and the rib 21 are used to cooperate with the limiting tongue 78 at the front end of the PCB adapter board 7 to further limit the positioning of the PCB adapter board 7. After the PCB adapter board 7 is installed inside the housing 2, the limiting tongue 78 at the front end of the PCB adapter board 7 is engaged in the slot 25 on the front side plate of the housing 2, and the plate rib 21 is stopped on the back of the limiting tongue 78, thereby limiting the PCB adapter board 7 and preventing the PCB adapter board 7 from moving away from the step surface 22 and disengaging from the step surface 22.

[0054] The housing 2 is made entirely of metal. The PCB adapter board 7 is installed inside the housing 2. The U-shaped ground pad 72 on the front of the PCB adapter board 7 fits against the stepped surface 22 on the inner wall of the housing 2, so that the housing 2 and the PCB adapter board 7 together form a shield to shield the front end of the multiple rows of groundless cables 6.

[0055] The housing 2 has four long bolt mounting holes 26, two of which are located at the front end and the other two are located in the rear middle section of the housing 2 and are arranged opposite each other. A recess 20 is provided on the housing 2 corresponding to the long bolt mounting holes 26, allowing the long bolt 1 to pass through the long bolt mounting hole and have its bolt head recessed into the recess 20. The rear end of the housing 2 also has two short bolt mounting holes 27, with a recess 20 corresponding to the short bolt mounting holes 27, allowing the short bolt 4 to pass through the short bolt mounting holes 27 and have its head recessed into the recess 20. The rear end of the housing 2 has a notch for mounting a wire frame 3.

[0056] Fixed frame 3 is a U-shaped frame, such as Figure 2 As shown, threaded holes are provided on both sides of the U-shaped frame. The U-shaped frame is fastened to the notch at the tail of the housing 2 and fixedly connected to the housing 2 by short fastening bolts 4 to securely restrain the groundless cable 6 inside. After the short fastening bolts 4 pass through the short bolt mounting holes on the housing 2, they are screwed into the threaded holes on the U-shaped frame, and the bolt heads are recessed into the groove 20.

[0057] like Figures 7-9As shown, the PCB adapter board 7 also has a shielding structure for shielding the front end of the groundless cable 6. The shielding structure is electrically connected to the first ground pad 75 on the front side of the PCB adapter board 7. The shielding structure includes horizontal shielding strips 13 and vertical shielding strips 12. Multiple horizontal shielding strips 13 are arranged at intervals to separate adjacent cables in the same row. Multiple vertical shielding strips 12 are arranged at intervals to separate cables in two adjacent rows. The horizontal shielding strips 13 and vertical shielding strips 12 form a mesh shielding structure. The horizontal shielding strips 13 are electrically fixed to the first ground pad 75 on the front side of the PCB adapter board 7. Several side protrusions 131 are provided at intervals on both sides of the horizontal shielding strips 13. The side protrusions 131 on two adjacent horizontal shielding strips 13 are aligned to clamp the conductive outer casing of the groundless cable 6 located between the two adjacent horizontal shielding strips 13. The bottom of the horizontal shielding strip 13 is provided with a number of pins 130 at intervals. The PCB adapter board 7 is provided with corresponding pin through holes 71. The pins 130 are inserted into the pin through holes 71 one by one to pre-position the horizontal shielding strip 13.

[0058] The vertical shielding strip 12 is electrically fixed to the upper part of the horizontal shielding strip 13, pressing the conductive outer sheath of the groundless cable 6 downwards. This ensures reliable contact between the conductive outer sheath and the first ground pad 75 on the front of the PCB adapter board. Furthermore, each groundless cable's conductive outer sheath is simultaneously surrounded by the first ground pad 75, the horizontal shielding strips 13 on both sides, and the vertical shielding strip 12 on the upper side, further improving the shielding effect. The upper part of the horizontal shielding strip 13 has positioning teeth 132, and the vertical shielding strip 12 has corresponding positioning holes 120. The positioning teeth 132 engage with the positioning holes 120 and are electrically fixed to them. The positioning teeth 132 and the positioning holes 120 cooperate to pre-position the vertical shielding strip 12. The first ground pad 75 on the front of the PCB adapter board 7 is comb-shaped. The horizontal shielding strip 13 corresponds to the comb teeth of the first ground pad 75, and the vertical shielding strip 12 corresponds to the comb handle of the first ground pad 75.

[0059] like Figure 10 As shown, the adapter socket 8 has positioning protrusions 80 on both its front and back sides. The PCB adapter board 7 has second positioning holes 79 corresponding to the positioning protrusions on the front side, and the PCB motherboard 9 has positioning mating holes 90 corresponding to the positioning protrusions on the back side. The positioning protrusions on both sides are inserted into the second positioning holes 79 and the positioning mating holes 90, respectively. The terminals on both sides of the adapter socket 8 are used for electrical connection with the wiring pads on the back of the PCB adapter board 7 and the terminals on the PCB motherboard 9, respectively.

[0060] During installation, such as Figure 1 , Figure 2As shown, the groundless cable 6 can be electrically fixed to the PCB adapter board 7 first, and then the PCB adapter board 7 can be installed into the housing 2. The limiting tongue 78 at the front end of the PCB adapter board 7 is snapped into the slot 25 on the front side plate of the housing 2. The plate rib 21 stops behind the limiting tongue 78, thereby limiting the front end of the PCB adapter board 7. At the same time, the cable fixing frame 3 is fixed to the rear of the housing 2 by short fastening bolts 4, fixing and locking the cable from the rear. In this way, the PCB adapter board 7 and the housing 2 are connected. Assemble the components into a single unit, then install the adapter socket 8 onto the PCB motherboard 9. Next, attach the PCB adapter board 7 (with cables) already installed inside the housing 2 onto the adapter socket 8. Insert four long, fastening bolts 1 to secure the housing 2, PCB adapter board 7, adapter socket 8, PCB motherboard 9, insulating film 10, and load backplate 11 together. The insulating film 10 can be glued to the load backplate 11 to prevent direct contact between the metal load backplate 11 and the PCB motherboard 9, which could cause a short circuit. The PCB adapter board 7, adapter socket 8, and PCB motherboard 9 are locked together, and the terminals at both ends of the adapter socket 8 remain in a state of elastic compression, thus forming a complete link and realizing the connector function.

[0061] This invention relates to an electrical connector assembly that features multiple rows of solder pads on both the front and back sides of a PCB adapter board. The front solder pads are used for electrically fixing groundless cables, while the back solder pads are used for contacting the corresponding terminals of the adapter socket. Because the entire back of the PCB adapter board is contacted with the adapter socket, rather than just the gold fingers on the front side, multiple rows of solder pads can be arranged on the back of the PCB adapter board for contacting the corresponding terminals of the adapter socket. This significantly increases the number of solder pads used for electrical connection to the adapter socket. Simultaneously, multiple rows of solder pads can be correspondingly arranged on the front of the PCB adapter board to connect more rows of cables. Furthermore, the internal wiring of the PCB adapter board connects the solder pads on both sides, achieving high-density wiring and significantly improving connector performance.

[0062] Example 2: The difference from Example 1 is that the signal pads and ground pads in each row of wiring pads on the front of the PCB adapter board are arranged alternately in the longitudinal direction. When connecting cables, the core wire can be stripped out and electrically fixed to the signal pad, and the conductive outer wire can be stripped to one side and electrically connected to the ground pad.

[0063] Example 3: The difference from Example 1 above is that the ground pads of each row of wiring pads on the front of the PCB adapter board are strip-shaped, and the rows of signal pads are distributed on one side of the strip-shaped ground pads.

[0064] Example 4: The difference from Example 1 above is that the rows of ground pads and rows of signal pads included in each row of wiring pads on the back of the PCB adapter board are arranged side by side in the horizontal direction.

[0065] Example 5: The difference from Example 1 above is that the front of the PCB adapter board is only provided with horizontal shielding strips and no vertical shielding strips. There are multiple horizontal shielding strips arranged at intervals to separate adjacent cables in the same row. The horizontal shielding strips are electrically fixed to the ground pad on the front of the PCB adapter board. The conductive parts of the non-grounded cable between two adjacent horizontal shielding strips are clamped together.

[0066] Example 6: The difference from Example 1 above is that no positioning teeth are provided on the horizontal shielding strip, and no shielding strip positioning holes are provided on the vertical shielding strip. The vertical shielding strip is spot-welded to the upper part of the horizontal shielding strip and electrically fixed to the horizontal shielding strip.

[0067] Example 7: The difference from Example 1 above is that no pins are set at the bottom of the horizontal shielding strip. The horizontal shielding strip is spot-welded to the PCB adapter board and electrically fixed to the first ground pad on the front side.

[0068] Example 8: The difference from Example 1 above is that no adapter socket is provided, and the wiring pads on the back of the PCB adapter board are directly connected to the corresponding terminals of the PCB motherboard.

[0069] Example 9: The difference from Example 1 above is that the load base is a metal load back plate, and the front of the metal load back plate is coated with an insulating coating.

[0070] Example 10: The difference from Example 1 above is that the groundless cable is a single-core cable.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An electrical connector assembly, characterized in that: The system includes a housing (2), inside which is a PCB adapter board (7). Two or more rows of groundless cables (6) are electrically fixed to the PCB adapter board (7). The housing (2) has a wiring channel through which the groundless cables (6) pass out of the housing. The PCB adapter board (7) has two or more rows of wiring pads arranged vertically and horizontally on both sides. Each row of wiring pads includes a row of signal pads and a ground pad. The core wire of the groundless cable (6) is electrically fixed to the signal pad on the front side. On the pad, the conductive outer sheath is electrically connected to the ground pad on the front side. The signal pad and ground pad on the back side are used to be electrically connected to the corresponding terminals of the PCB motherboard, or to be electrically connected to the corresponding terminals of the adapter socket and thus electrically connected to the PCB motherboard. The PCB adapter board (7) has conductive lines inside to connect the pads on the front and back sides of the PCB adapter board (7). The electrical connector assembly also includes a load base, which is locked to the housing (2) to press and fix the PCB adapter board (7) inside the housing (2).

2. The electrical connector assembly according to claim 1, characterized in that: The signal pads and ground pads in each row of wiring pads on the front of the PCB adapter board (7) are arranged side by side in the horizontal direction.

3. The electrical connector assembly according to claim 2, characterized in that: The ground pads of each row of wiring pads on the front of the PCB adapter board (7) are comb-shaped, and rows of signal pads are interspersed between the comb teeth of the ground pads.

4. The electrical connector assembly according to claim 3, characterized in that: The grounding pads of two adjacent rows of wiring pads on the front of the PCB adapter board (7) are electrically connected.

5. The electrical connector assembly according to any one of claims 2-4, characterized in that: The signal pads and ground pads of each row of wiring pads on the back of the PCB adapter board (7) are arranged alternately in the longitudinal direction.

6. The electrical connector assembly according to any one of claims 1-4, characterized in that: The PCB adapter board (7) is provided with a shielding structure for shielding the front end of each cable. The shielding structure is electrically connected to the ground pad on the front side of the PCB adapter board (7).

7. The electrical connector assembly according to claim 6, characterized in that: The shielding structure includes horizontal shielding strips (13) and vertical shielding strips (12). Multiple horizontal shielding strips (13) are arranged at intervals to separate adjacent cables in the same row. Multiple vertical shielding strips (12) are arranged at intervals to separate cables in two adjacent rows. The horizontal shielding strips (13) are electrically fixed to the ground pad on the front of the PCB adapter board (7). Two adjacent horizontal shielding strips (13) clamp the conductive outer casing of the ungrounded cable (6) in between. The vertical shielding strips (12) are electrically fixed to the upper part of the horizontal shielding strips (13) and press the conductive outer casing downward.

8. The electrical connector assembly according to claim 7, characterized in that: The upper part of the horizontal shielding strip (13) is provided with positioning teeth (132), and the vertical shielding strip (12) is provided with corresponding shielding strip positioning holes (120). The positioning teeth (132) are inserted into the shielding strip positioning holes (120) and electrically fixed to the shielding strip positioning holes (120).

9. The electrical connector assembly according to claim 7, characterized in that: The bottom of the horizontal shielding strip (13) is provided with a number of pins (130) spaced apart. The PCB adapter board (7) is provided with corresponding pin through holes (71), and the pins (130) are inserted into the pin through holes (71) one by one.

10. The electrical connector assembly according to any one of claims 1-4, characterized in that: The housing (2) is a semi-closed structure. The inner wall of the housing (2) is provided with a stepped surface (22) facing the opening of the housing (2). The front of the PCB adapter board (7) is attached to the stepped surface (22).

11. The electrical connector assembly according to claim 10, characterized in that: The step surface (22) is provided with a positioning post (23) extending perpendicularly to the step surface (22), and the PCB adapter board (7) is provided with a corresponding positioning hole (120), and the positioning post (23) is inserted into the positioning hole (120).

12. The electrical connector assembly according to claim 10, characterized in that: The front end of the PCB adapter board (7) is provided with a limiting tongue (78), and the housing (2) is provided with a corresponding slot (25). A rib (21) is provided at the opening of the slot (25). The limiting tongue (78) is fitted into the slot (25), and the rib (21) is blocked on the back of the limiting tongue (78).

13. The electrical connector assembly according to any one of claims 1-4, characterized in that: The electrical connector assembly also includes an adapter socket (8) and a PCB motherboard (9) stacked sequentially on the back side of the PCB adapter board (7). The load base is locked to the housing (2) to lock the PCB adapter board (7), the adapter socket (8) and the PCB motherboard (9) together. The terminals on the front and back sides of the adapter socket (8) are respectively attached to the wiring pads on the back of the PCB adapter board (7) and the pads on the PCB motherboard (9) for electrical connection.

14. The electrical connector assembly according to claim 13, characterized in that: The adapter socket (8) has positioning protrusions (80) on both the front and back sides. The PCB adapter board (7) has a second positioning hole (79) corresponding to the positioning protrusion on the front side. The PCB motherboard (9) has a positioning mating hole (90) corresponding to the positioning protrusion on the back side. The positioning protrusions on the front and back sides are respectively inserted into the second positioning hole (79) and the positioning mating hole (90).

15. The electrical connector assembly according to any one of claims 1-4, characterized in that: The load base includes an insulating diaphragm (10) and a load back plate (11). The insulating diaphragm (10) is located on the front side of the load back plate (11) and separates the load back plate (11) from the conductive components on the front side.

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