An external crosstalk resistant unshielded small size network module

Abstract

The utility model relates to network module technical field, the utility model discloses a kind of external crosstalk immunity non-shielded small size network module, the module includes shell, left ear and right ear rotationally connected in the two sides of shell, gold needle terminal, IDC terminal, IDC seat, PCB board, wire arrangement cover and respectively clamping fixed on the metal sheet of left ear and right ear;Metal sheet is clamped by buckling point and corresponding ear, without screw or welding;Gold needle terminal and IDC terminal are arranged on PCB board, IDC terminal and PCB board adopt to realize exempt welding electrical connection by piercing contact;IDC seat is located at the rear side of PCB board, wire arrangement cover is arranged at the end of IDC seat and is internally provided with line pair limiting groove to constrain network cable line pair open length, cooperate PCB differential routing layout, suppress module internal and external crosstalk under smaller appearance size.The utility model is favorable to reduce external crosstalk between adjacent modules in high-density wiring scene, and assembly is simple, and reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of network module technology, specifically to a small-sized, unshielded network module resistant to external crosstalk. Background Technology

[0002] Unshielded network modules are essential equipment in termination construction. As the link speed increases to the 10 Gigabit Ethernet level, many problems in their use have gradually become prominent. Among them, the electromagnetic coupling between wire pairs within the module and between adjacent modules is intensified, making external crosstalk and crosstalk between adjacent ports important factors that limit the transmission performance in high-density wiring environments. Unshielded network modules typically rely on insulated body design and PCB routing optimization to mitigate crosstalk. When ports are installed in high-density parallel configurations, lateral electromagnetic leakage paths remain significant. While some solutions use metal shielding housings to improve isolation, this increases cost, size, and grounding requirements, making them unsuitable for unshielded, small-sized applications. Furthermore, if the IDC and PCB are connected by soldering, issues such as cold solder joints, false solder joints, and fluctuations in process consistency can arise, severely impacting mass production efficiency. Utility Model Content

[0003] This invention provides a non-shielded, small-sized network module that resists external crosstalk to solve the problems of excessive external crosstalk and difficulty in ensuring consistency due to reliance on soldering under high-density installation conditions.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: In a first aspect, an unshielded small-sized network module resistant to external crosstalk is provided, comprising a housing, gold pin terminals, IDC terminals, an IDC socket, a PCB board, and a cable management cover; it also includes a left ear and a right ear rotatably connected to both sides of the housing, and metal plates respectively disposed on the left ear and the right ear; the metal plates are provided with fastening points, and are snapped and fixed to the corresponding left ear and right ear through the fastening points; the gold pin terminals and the IDC terminals are both disposed on the PCB board, and the IDC terminals are electrically connected to the PCB board through puncture contact; The IDC socket is located on the rear side of the PCB board and is used to support the IDC terminals. The cable management cover is connected to the side of the IDC socket away from the PCB board. The cable management cover is provided with a cable pair limiting groove.

[0005] Furthermore, the left ear and the right ear are respectively connected to the outer shell via a pivot, allowing the left ear and the right ear to rotate.

[0006] Furthermore, the metal sheet includes a U-shaped metal sheet, which has a U-shaped structure and covers the side of the area where the PCB board and the gold pin terminal are located.

[0007] Furthermore, the metal sheets are symmetrically arranged on the left and right ears and distributed on both sides of the PCB board in the width direction of the small-sized network module to form lateral electromagnetic isolation when adjacent modules are installed side by side.

[0008] Furthermore, the front end of the housing is provided with a connector for plugging in a network plug, and the housing is provided with a category label for identifying the transmission category.

[0009] Furthermore, the cable management cover is evenly provided with cable threading holes for the network cable to pass through, and the IDC base is provided with markings for indicating the assembly direction.

[0010] Furthermore, the PCB board is provided with a differential pair routing area for transmitting high-speed differential signals. The differential pair routing area corresponds to the pair limiting slot in geometric layout, so as to shorten the twisted section of the pair and reduce near-end crosstalk inside the small-sized network module.

[0011] Optionally, the left ear and the right ear are respectively connected to the outer casing via a pivot, so that the left ear and the right ear can rotate relative to the outer casing within a certain angle range to adapt to different installation scenarios such as wall boxes and patch panels.

[0012] Optionally, the metal sheet is a generally U-shaped metal sheet. The U-shaped metal sheet covers or is close to the lateral area of ​​the PCB board and the gold pin assembly, and together with the symmetrically arranged metal sheets on both sides, forms a lateral isolation structure, which helps to weaken the electromagnetic coupling between adjacent modules.

[0013] Optionally, the front end of the housing is provided with a standard RJ45 plug area and category identification (e.g., CAT.6A, etc.), and "UP" or arrow-like assembly direction markings can be provided at the cable management cover or IDC socket to facilitate construction guidance.

[0014] Optionally, the PCB board is provided with a differential pair routing area, which works in conjunction with the pair limiting groove inside the cable management cover to control the twisted length of the pairs and optimize near-end crosstalk.

[0015] The above-described solution of this utility model has at least the following beneficial effects: By securing metal plates to the left and right ears with clips, no screws or welding are required, simplifying the assembly process. When installed side-by-side, the metal plates are distributed on both sides of the module, helping to form lateral electromagnetic isolation and mitigating external crosstalk in high-density scenarios. The IDC terminals and PCB board use a piercing-type solderless interconnection, which reduces electrical uncertainties caused by welding defects and is beneficial for batch consistency and production efficiency. The cable management cover's inner wire pair limiting groove constrains the direction and twist length of the network cable pairs. Combined with the PCB differential layout, this helps to balance internal crosstalk control and transmission performance in a miniaturized form factor. As a result, the network module remains easy to assemble in a small size and helps suppress external crosstalk between adjacent ports. Attached Figure Description

[0016] Figure 1 An overall perspective view of the small-sized network module provided in the embodiments of this utility model; Figure 2 Exploded three-dimensional view of the small-sized network module provided in the embodiment of this utility model; Figure 3 A bottom view of a small-sized network module provided in an embodiment of this utility model; Figure 4 Rear perspective view of a small-sized network module provided in an embodiment of this utility model; Figure 5 Right view of the small-sized network module provided in this embodiment of the utility model; Figure 6 A top view of a small-sized network module provided in an embodiment of this utility model; Figure 7 A front view of a small-sized network module provided in an embodiment of this utility model; Figure 8 Left view of a small-sized network module provided in an embodiment of this utility model; Figure 9 Rear view of a small-sized network module provided in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: In the diagram: 1. Outer shell; 2. PCB; 3. Gold pin terminal; 4. IDC; 5. Left ear; 6. Right ear; 7. U-shaped metal piece; 8. IDC socket; 9. Cable management cover. Detailed Implementation

[0018] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0019] like Figures 1 to 9 As shown in Embodiment 1, this utility model provides an anti-external crosstalk unshielded small-size network module, including a shell 1, a PCB 2, gold pin terminals 3, an IDC 4, a left ear 5, a right ear 6, a U-shaped metal sheet 7, an IDC socket 8, and a cable management cover 9.

[0020] The outer casing 1 constitutes the main insulating housing of the module, and the front end is provided with a plug interface for mating with the plug; the surface of the outer casing 1 may be provided with a category identification section (e.g., embossed "CAT.6A") to indicate the wiring category supported by the design.

[0021] The gold pin terminal 3 is mounted on the front area of ​​PCB 2 to form reliable contact with the inserted RJ45 plug contacts.

[0022] PCB 2 serves as the signal transfer carrier, with IDC 4 located on its rear side for crimping network cable conductors. IDC 4 and PCB 2 are interconnected using pierced contact (solderless): IDC 4 is equipped with pierced structures or elastic contact structures to form a stable electrical connection with the corresponding pads or metallized holes on PCB 2, thereby avoiding fluctuations in the soldering process.

[0023] IDC socket 8 is located on the rear side of PCB 2, used for insulation positioning and protection of IDC 4, and provides a connection mating part for cable management cover 9.

[0024] The cable management cover 9 is connected to the side of the IDC socket 8 away from the PCB 2. The cable management cover 9 has a wire pair limiting groove inside, which is used to constrain the eight wires by wire pair, reduce unnecessary twisting length, and match the differential routing layout on the PCB 2, thereby reducing crosstalk inside the module.

[0025] The left ear 5 and right ear 6 are rotatably connected to both sides of the outer casing 1 (e.g., via an integrally molded hinge or hinge structure), and can be rotated to an angle convenient for snapping into the panel or patch panel ear position during construction. U-shaped metal plates 7 are installed on the left ear 5 and right ear 6 respectively. The U-shaped metal plates 7 have snap-fit ​​points (e.g., stamped tongues or protrusions) that engage with the snap holes or slots on the ears for screwless, rapid assembly. The U-shaped metal plates 7 should be symmetrically arranged and distributed on both sides of the module's width. When multiple modules are installed side-by-side, this creates a lateral isolation path between adjacent modules, which helps suppress external crosstalk. The U-shaped metal plates 7 can have a roughly U-shaped outline to fit the lateral space of the module and structurally form a more continuous shielding / reflection boundary (improving lateral coupling in the absence of a fully shielded, integral metal casing).

[0026] The cable management cover 9 can be equipped with a cable entry hole for cables, and the word "UP" or arrow mark can be set on the cable management cover 9 or IDC socket 8 to indicate the termination and closing direction, reducing the risk of misinstallation.

[0027] Specifically, during assembly, the gold pin terminals 3 and IDC 4 can be fixed to PCB 2 according to the process and the piercing interconnection can be completed; the PCB assembly can be installed into the housing 1; the IDC socket 8 and the cable management cover 9 can be installed at the rear according to the snap-fit ​​structure; the U-shaped metal piece 7 can be snapped to the left ear 5 and the right ear 6; the left ear 5 and the right ear 6 can be connected to the housing 1.

[0028] After the network cable is introduced through the self-handling cover 9, insert the wire pairs into the limiting grooves and crimp the IDC 4 to complete the termination.

[0029] Example 2: Based on Example 1, this example further explains the snap-fit ​​structure between the U-shaped metal piece 7 and the left ear 5 and right ear 6.

[0030] The U-shaped metal piece 7 can be stamped on both sides to form outward-facing elastic latches as fastening points. The left ear 5 and the right ear 6 have corresponding locking holes. During assembly, the U-shaped metal piece 7 is first pushed into place against the inner positioning surface of the ear, so that the elastic latches cross the locking hole step and spring back to lock, thus preventing it from falling off.

[0031] Alternatively, a pair of symmetrical protrusions can be set on the U-shaped metal piece 7 to cooperate with the strip-shaped slot sliding buckle on the inside of the ear. After assembly, the protrusions fall into the limiting recess at the end of the slot, thus achieving screwless fixation.

[0032] To further enhance the lateral isolation effect, the U-shaped opening of the U-shaped metal sheet 7 can face the inside of the module, so that the two flanges are close to or lightly touch the gap area between the inner side wall of the outer shell 1 and the side edge of the PCB 2, thereby forming a more continuous metal boundary on both sides in the width direction of the module. This boundary does not need to be electrically connected to the PCB 2. In the unshielded overall scheme, it mainly weakens the near-field coupling between adjacent modules through geometric shielding and mirror current effect.

[0033] During disassembly and maintenance, tools can be used to press down on the elastic latch or push the U-shaped metal piece 7 in the opposite direction of the sliding buckle to disengage it from the left ear 5 or the right ear 6.

[0034] Example 3: Based on Example 1, this example further explains the cooperation and termination operation between the cable management cover 9 and the IDC socket 8.

[0035] The cable management cover 9 and the IDC base 8 can be connected by a hinge at one end and a snap-lock at the other end: During construction, first open the cable management cover 9, introduce the network cable through the cable hole and put it into the cable pair limiting groove according to the wire pair, so that each wire pair maintains a stable partition and route before reaching the IDC 4 crimping position; the arrangement of the cable pair limiting groove should correspond one-to-one with the entrance position of each differential wire pair routing area on PCB 2, so as to minimize the length of the non-twisted section inside the module.

[0036] After the conductor is inserted, close the cable management cover 9 to the IDC base 8. The inner side of the cable management cover 9 can be provided with a pressure rib that is consistent with the direction of the conductor. When closing the cover, apply a pre-pressure to the conductor towards IDC 4, so that the IDC 4 can be pierced and crimped in one go using a punch-down tool or a tool-free cover crimping structure.

[0037] The “UP” or arrow-like markings on the cable management cover 9 or IDC socket 8 should be aligned with the cable pair limit slots and the IDC 4 cable sequence markings to avoid cable sequence misalignment caused by closing the cover in the opposite direction.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A small-sized, unshielded network module resistant to external crosstalk, comprising a housing, gold pin terminals, IDC terminals, an IDC socket, a PCB board, and a cable management cover; characterized in that: It also includes a left ear and a right ear that are rotatably connected to both sides of the outer shell, and metal plates respectively disposed on the left ear and the right ear; the metal plates are provided with fastening points, and are fixed to the corresponding left ear and right ear by the fastening points; the gold pin terminal and the IDC terminal are both disposed on the PCB board, and the IDC terminal and the PCB board are electrically connected by piercing contact; The IDC socket is located on the rear side of the PCB board and is used to support the IDC terminals. The cable management cover is connected to the side of the IDC socket away from the PCB board. The cable management cover is provided with a cable pair limiting groove.

2. The anti-external crosstalk unshielded small-size network module according to claim 1, characterized in that: The left ear and the right ear are respectively connected to the outer shell via a pivot, allowing the left ear and the right ear to rotate.

3. The anti-external crosstalk unshielded small-size network module according to claim 1 or 2, characterized in that: The metal sheet includes a U-shaped metal sheet, which has a U-shaped structure and covers the side of the area where the PCB board and the gold pin terminal are located.

4. The anti-external crosstalk unshielded small-size network module according to claim 3, characterized in that: The metal sheets are symmetrically arranged on the left and right ears and distributed on both sides of the PCB board in the width direction of the small-sized network module to form lateral electromagnetic isolation when adjacent modules are installed side by side.

5. The anti-external crosstalk unshielded small-size network module according to claim 1, characterized in that: The front end of the housing is provided with a connector for plugging in a network plug, and the housing is provided with a category label for identifying the transmission category.

6. The anti-external crosstalk unshielded small-size network module according to claim 1, characterized in that: The cable management cover is evenly provided with cable threading holes for the network cable to pass through, and the IDC base is provided with markings to indicate the assembly direction.

7. The anti-external crosstalk unshielded small-size network module according to claim 6, characterized in that: The PCB board has a differential pair routing area for transmitting high-speed differential signals. The differential pair routing area corresponds to the pair limiting slot in geometric layout to shorten the twisted section of the pair and reduce near-end crosstalk inside the small-sized network module.

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