Transmission line structure and data transmission module

Abstract

The utility model belongs to the technical field of electronic equipment discloses a transmission line structure and data transmission module. The transmission line structure includes wire body, conducting cloth subassembly and insulating layer, wire body includes conductor and insulating sheath that is wrapped in conductor, both ends of conductor are used for connecting with connector and circuit board connection respectively, conducting cloth subassembly is covered in the outside of insulating sheath, insulating layer has inner cover and outer cover, along the length direction of wire body, both ends of inner cover are respectively overlapped in circuit board and insulating sheath, and outer cover is in close contact with conducting cloth subassembly. The insulating layer of the transmission line structure forms the barrier between conducting cloth subassembly and conductor, prevents conductor from exposing caused by the retraction of the insulating layer of wire body, reduces the short circuit risk caused by the contact of conductor and conducting cloth subassembly, thereby greatly improves the use safety and reliability of the transmission line structure.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to a transmission line structure and a data transmission module. Background Technology

[0002] LVDS (Low Voltage Differential Signaling) cable is one of the most important data transmission lines in a laptop computer. It connects the main circuit board of the computer to the LCD panel. The main circuit board transmits video signals or graphics data to the LCD panel through the LVDS cable so that the LCD panel can display the image.

[0003] LVDS cables typically consist of a transmission line body and an outer insulating sheath. The transmission line body transmits data signals, with one end connected to the circuit board and the other end connected to the output terminal connector. The insulation layer prevents leakage or short circuits caused by contact with other wires. In existing computers, the insulation layer often shrinks at the connection point between the LVDS cable and the circuit board due to external factors such as thermal expansion and contraction of the insulation sheath or device relocation, exposing the transmission line body at the connection point and increasing the risk of short circuits and current leakage. Utility Model Content

[0004] The purpose of this invention is to provide a transmission line structure and a data transmission module that can reduce the short-circuit risk of the transmission line structure, thereby improving the safety and reliability of the transmission line structure.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Transmission line structure, including:

[0007] The conductor body includes a conductor and an insulating outer sheath wrapped around the conductor, and a first end of the conductor is connected to a circuit board;

[0008] A conductive cloth assembly, which covers the outside of the insulating outer sheath;

[0009] An insulating layer having an inner cover and an outer cover, wherein the two ends of the inner cover overlap the circuit board and the insulating outer sheath respectively along the length direction of the conductor body, and the outer cover is attached to the conductive cloth assembly.

[0010] Preferably, the conductive cloth assembly includes a first conductive cloth, the second end of the conductor is connected to the connector, the first conductive cloth is covered by the insulating layer, and the outer cover is attached to the first conductive cloth.

[0011] Preferably, a foil is disposed between the first conductive cloth and the insulating outer sheath, the foil having an insulating surface;

[0012] At least two of the conductor bodies are covered by the foil to form a parallel group, and the insulating surface is attached to the insulating outer sheath in the parallel group.

[0013] Preferably, the conductive cloth assembly further includes a second conductive cloth disposed between the first conductive cloth and the foil, and the outer side of each foil of the parallel wire group is covered with the second conductive cloth. The foil also has a conductive surface opposite to the insulating surface, and the second conductive cloth is attached to the conductive surface.

[0014] Preferably, the conductive cloth assembly further includes a plurality of third conductive cloths, which are disposed between the first conductive cloth and the second conductive cloth, and are bundled to the outside of the second conductive cloths of the plurality of parallel groups. The plurality of third conductive cloths are spaced apart along the length direction of the conductor body.

[0015] Preferably, the first end and the second end extend out of the insulating outer sheath, and along the length direction of the conductor body, the distance between the end of the foil near the first end and the end of the insulating outer sheath near the first end is no greater than 5mm, and the distance between the end of the foil near the second end and the end of the insulating outer sheath near the second end is no greater than 5mm.

[0016] The data transmission module includes a circuit board, a connector, and the aforementioned transmission line structure. The two ends of the conductor body are respectively connected to the pads of the circuit board and the pads of the connector. Along the length of the conductor body, one end of the insulating layer overlaps the circuit board, and the other end overlaps the connector.

[0017] Preferably, the data transmission module further includes a grounding housing, which covers the pads of the connector and is detachably connected to the connector.

[0018] Preferably, the data transmission module further includes a ground wire, one end of which is connected to the circuit board and the other end of which is connected to the grounded housing.

[0019] Preferably, the ground wire is covered with a ground wire conductive cloth.

[0020] The beneficial effects of this utility model are as follows:

[0021] The transmission line structure provided by this utility model includes a conductor body, a conductive cloth assembly, and an insulating layer. Since the conductive cloth assembly is wrapped on the insulating outer sheath, it can absorb and reflect electromagnetic waves, thus forming a shielding structure for the conductor body. This reduces external electromagnetic interference and lowers the leakage of high-frequency electromagnetic waves in the conductor body. The insulating layer is provided on the conductive cloth assembly. Since the two ends of the inner surface of the insulating layer are respectively placed on the circuit board and the insulating outer sheath, and the outer surface of the insulating layer is in contact with the conductive cloth assembly, the insulating layer forms a barrier between the conductive cloth assembly and the conductor. This prevents the conductor from being exposed due to the insulation layer of the conductor body retracting, reducing the risk of short circuit caused by the conductor contacting the conductive cloth assembly, thereby greatly improving the safety and reliability of the transmission line structure.

[0022] The data transmission module provided by this utility model includes a circuit board, a connector, and the aforementioned transmission line structure. Since an insulating layer is provided on the conductive cloth assembly, and the two ends of the insulating layer are respectively placed on the insulating outer sheath of the circuit board and the conductor body, the insulating layer can form a barrier between the conductive cloth assembly and the conductor, avoiding accidental contact between the conductor and the conductive cloth assembly and the resulting short circuit, thereby improving the safety and reliability of the data transmission module. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the appearance of the data transmission module provided in a specific embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the data transmission module provided in a specific embodiment of this utility model;

[0025] Figure 3 This is an assembly drawing of the wire body and connector provided in a specific embodiment of this utility model;

[0026] Figure 4 This is a cross-sectional view of the conductor body provided in a specific embodiment of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the connector and grounding shell provided in a specific embodiment of this utility model.

[0028] In the picture:

[0029] 100 - Circuit board;

[0030] 200 - Connector; 210 - Body; 220 - Positioning protrusion; 230 - Limiting block; 240 - Locking block;

[0031] 300 - Grounding outer casing; 310 - Housing; 320 - Pull rod; 330 - Slot; 340 - Positioning slot;

[0032] 400-Ground wire;

[0033] 500-ground conductive cloth;

[0034] 1-Wire body; 11-Conductor; 12-Insulating outer sheath;

[0035] 2-Conductive cloth assembly; 21-Second conductive cloth; 22-Third conductive cloth; 23-First conductive cloth; 231-First connector section; 232-Transition section; 233-Second connector section;

[0036] 3-Insulating layer;

[0037] 4-Foil sheet. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical 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 utility model based on the specific circumstances.

[0040] In this 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 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 directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] like Figures 1 to 4 As shown, this utility model provides a transmission line structure, which includes a conductor body 1, a conductive cloth assembly 2, and an insulating layer 3. The conductor body 1 includes a conductor 11 and an insulating outer sheath 12 wrapped around the conductor 11. The first end of the conductor 11 is connected to the circuit board 100. The conductive cloth assembly 2 covers the outside of the insulating outer sheath 12. The insulating layer 3 has an inner cover and an outer cover. Along the length direction of the conductor body 1, the two ends of the inner cover overlap the circuit board 100 and the insulating outer sheath 12, respectively, and the outer cover is attached to the conductive cloth assembly 2. In this embodiment, since the conductive cloth assembly 2 is covered on the insulating outer sheath 12, the conductive cloth assembly 2 can absorb and reflect electromagnetic waves. Therefore, the conductive cloth assembly 2 can form a shielding structure for the conductor body 1, thereby reducing external electromagnetic interference and reducing the leakage of high-frequency electromagnetic waves in the conductor body 1. An insulating layer 3 is provided on the conductive cloth assembly 2. Since the two ends of the inner surface of the insulating layer 3 are respectively placed on the circuit board 100 and the insulating outer sheath 12, and the outer surface of the insulating layer 3 is in contact with the conductive cloth assembly 2, the insulating layer 3 forms a barrier between the conductive cloth assembly 2 and the conductor 11, preventing the conductor 11 from being exposed due to the retraction of the insulating layer 3 of the conductor body 1. This reduces the risk of short circuit caused by the conductor 11 contacting the conductive cloth assembly 2, thereby greatly improving the safety and reliability of the transmission line structure.

[0043] Specifically, the conductor body 1 is a data transmission line commonly used in the art, and the insulating outer sheath 12 is concentrically wrapped around the conductor 11. The conductor 11 is used to transmit electrical signals, and the insulating outer sheath 12 provides insulation and protection for the conductor 11. The conductive cloth assembly 2 is composed of multiple conductive cloths, which are a type of flexible conductive material commonly used in the art. The insulating layer 3 is a type of PET insulating tape commonly used in the art, with its adhesive side as the inner cover. Along the length of the conductor body 1, the two ends of the inner cover are respectively adhered to the circuit board 100 and the insulating outer sheath 12 of the conductor body 1. It can be understood that the conductive cloth assembly 2 surrounds and covers the insulating outer sheath 12 of all conductor bodies 1. Therefore, the insulating layer 3 is set to surround all conductor bodies 1 in accordance with the conductive cloth assembly 2.

[0044] To further improve the transmission line structure's immunity to external signals, such as Figure 1As shown, the conductive cloth assembly 2 also includes a first conductive cloth 23. The second end of the conductor 11 is connected to the connector 200. The first conductive cloth 23 is covered by the insulating layer 3, and the outer cover is attached to the first conductive cloth 23. In this embodiment, the first conductive cloth 23 includes a first connector segment 231, a transition segment 232, and a second connector segment 233. The first connector segment 231 covers the connection position between the conductor body 1 and the circuit board 100, the transition segment 232 covers the main body position of the conductor body 1, and the second connector segment 233 covers the connection position between the conductor body 1 and the connector 200. The first connector segment 231, the transition segment 232, and the second connector segment 233 can be a continuous integral conductive cloth, or they can be three independent conductive cloths with the joints of adjacent segments overlapping to avoid gaps.

[0045] To further improve the anti-interference capability of this transmission line structure, such as Figures 2 to 4 A foil 4 is disposed between the first conductive cloth 23 and the insulating outer sheath 12, and the foil 4 has an insulating surface. At least two conductor bodies 1 are covered by the foil 4 to form a parallel group, and the insulating surface is attached to the insulating outer sheath 12 in the parallel group. Since the foil 4 wraps around at least two conductor bodies 1, the at least two conductor bodies 1 are tightly attached to form an integral parallel group, thereby reducing the impact of edge effects and further improving the signal transmission capability of the transmission line structure. Specifically, the foil 4 is made of aluminum foil or copper foil, and the conductor bodies 1 are wrapped and wound in pairs by the foil 4 to form a parallel group. The foil 4 can absorb and reflect electromagnetic waves, so the foil 4 and the first conductive cloth 23 cooperate to form a double shielding structure for the conductor bodies 1.

[0046] like Figure 3 and Figure 4 As shown, the conductive cloth assembly 2 also includes a second conductive cloth 21, which is disposed between the first conductive cloth 23 and the foil 4. The outer side of each foil 4 in the parallel wiring group is covered with the second conductive cloth 21. The foil 4 also has a conductive surface opposite to the insulating surface, and the second conductive cloth 21 is attached to the conductive surface. Specifically, the foil 4 covers the conductor body 1 along the length of the conductor body 1, with the insulating surface of the foil 4 facing inwards and attached to the two conductor bodies 1 of the parallel wiring group, and the conductive surface of the foil 4 facing outwards and attached to the second conductive cloth 21. The second conductive cloth 21 has an adhesive side that adheres to the conductive surface of the foil 4. The second conductive cloth 21 and the foil 4 together wrap and cover the conductor body 1, improving the shielding effect against external signals. At the same time, since the second conductive cloth 21 is in close contact with the conductive surface of the foil 4, a low-resistance conductive circuit is formed between the conductive surfaces of the second conductive cloth 21 and the foil 4 to conduct the noise current generated in the conductor body 1, thereby reducing the signal attenuation in the conductor body 1 and greatly improving the signal transmission capability and anti-interference capability of the transmission line structure.

[0047] like Figure 3As shown, the conductive cloth assembly 2 also includes multiple third conductive cloths 22. The third conductive cloths 22 are disposed between the first conductive cloth 23 and the second conductive cloth 21. The third conductive cloths 22 are bundled around the outside of the second conductive cloths 21 of multiple parallel groups. Multiple third conductive cloths 22 are arranged at intervals along the length direction of the conductor body 1. Specifically, multiple third conductive cloths 22 are provided along the length direction of the conductor body 1. The adhesive side of the third conductive cloth 22 is wrapped and bundled around the second conductive cloths 21 of all parallel groups, thereby binding and fixing all parallel groups. While improving the structural strength of the transmission line, it also ensures good contact between the second conductive cloth 21 and the conductive surface of the foil 4.

[0048] It is understandable that the second conductive cloth 21, the third conductive cloth 22, and the first conductive cloth 21 are wrapped sequentially from the inside out. The first conductive cloth 23 wraps the circuit board 100, each parallel line group, the second conductive cloth 21, the first conductive cloth 22, and the connector 200 to form a dense whole, covering the seam of the foil 4 and the second conductive cloth 21, thereby greatly improving the shielding effect of the conductive cloth assembly 2.

[0049] like Figure 2 and Figure 4 As shown, the first end and the second end extend from the insulating outer sheath 12 respectively. Along the length direction of the conductor body 1, the distance between the end of the foil 4 near the first end and the end of the insulating outer sheath 12 near the first end is no greater than 5mm, and the distance between the end of the foil 4 near the second end and the end of the insulating outer sheath 12 near the second end is no greater than 5mm. Specifically, the first end extends from the insulating outer sheath 12 and connects to the pad of the circuit board 100, and the second end extends from the insulating outer sheath 12 and connects to the pad of the connector 200. The foil 4 covers the insulating outer sheath 12 of at least two conductor bodies 1 to form a tightly attached parallel group. The conductor bodies 1 at both ends of the parallel group will spread out and connect to the pads of the circuit board 100 and the pads of the connector 200 respectively. In order to avoid the electromagnetic field distribution being uneven due to the excessive spread distance of the conductor bodies 1 in the parallel group, the distance between the two ends of the foil 4 and the two ends of the insulating outer sheath 12 is no greater than 5mm, thereby ensuring the stability of the characteristic impedance of the transmission line structure.

[0050] This embodiment also provides a data transmission module, which includes a circuit board 100, a connector 200, and the aforementioned transmission line structure. The two ends of the conductor body 1 are respectively connected to the pads of the circuit board 100 and the connector 200. Along the length of the conductor body 1, one end of the insulating layer 3 overlaps the circuit board 100, and the other end overlaps the connector 200. In this embodiment, since the conductive cloth assembly 2 is provided with an insulating layer 3, and the two ends of the insulating layer 3 overlap the insulating outer sheath 12 of the circuit board 100 and the conductor body 1, the insulating layer 3 can form a barrier between the conductive cloth assembly 2 and the conductor 11, preventing accidental contact between the conductor 11 and the conductive cloth assembly 2 that could cause a short circuit, thereby improving the safety and reliability of the data transmission module.

[0051] Furthermore, such as Figures 1 to 3 As shown, the data transmission module also includes a grounding housing 300, which covers the pads of the connector 200 and is detachably connected to the connector 200. Specifically, the grounding housing 300 covers the pads of the connector 200 and is detachably connected to the connector 200, so the grounding housing 300 can protect the connection position between the conductor body 1 and the connector 200.

[0052] like Figure 2 and Figure 3 As shown, the data transmission module also includes a ground wire 400. One end of the ground wire 400 is connected to the circuit board 100, and the other end is connected to the grounding housing 300. The grounding housing 300 is made of conductive metal. The ground wire 400 is connected to the grounding housing 300, thereby grounding the data transmission module. The ground wire 400 is covered with a ground wire conductive cloth 500. The ground wire conductive cloth 500 can increase the contact area between the ground wire 400 and the grounding housing 300 to further improve the safety of the data transmission module. At the same time, the ground wire conductive cloth 500 can also protect the ground wire 400 and the conductor body 1, preventing the ground wire 400 from directly contacting the conductor body 1 and damaging the insulation sheath 12 of the conductor body 1.

[0053] Specifically, such as Figure 5As shown, the connector 200 includes a body 210 and a positioning protrusion 230. Both the solder pad and the positioning protrusion 230 are disposed on the body. A limiting block 220 is also provided on one side of the body 210 near the solder pad, forming a limiting groove between two adjacent limiting blocks 220 to limit the placement of the wire body 1. The body 210 is made of insulating material, and two snap-fit ​​blocks 240 are provided on the side of the body 210 for snap-fitting with the grounding housing 300. The grounding housing 300... The device includes a housing 310 and a pull rod 320, with the pull rod 320 movably mounted on the housing 310. The housing 310 has a slot 330 corresponding to the snap-fit ​​block 240 of the connector 200, so that the grounding housing 300 and the connector 200 are connected by snap-fitting the snap-fit ​​block 240 into the slot 330. The housing 310 also has a positioning groove 340 corresponding to the positioning protrusion 230 of the connector 200, which can play a positioning role in assembling the connector 200 and the grounding housing 300.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transmission line structure, characterized in that, include: The conductor body (1) includes a conductor (11) and an insulating outer sheath (12) wrapped around the conductor (11), and the first end of the conductor (11) is connected to the circuit board (100); Conductive cloth assembly (2), which covers the outside of the insulating outer skin (12); An insulating layer (3) has an inner cover and an outer cover. Along the length of the conductor body (1), the two ends of the inner cover overlap the circuit board (100) and the insulating outer sheath (12), respectively, and the outer cover is attached to the conductive cloth assembly (2).

2. The transmission line structure according to claim 1, characterized in that, The conductive cloth assembly (2) includes a first conductive cloth (23), the second end of the conductor (11) is connected to the connector (200), the first conductive cloth (23) is covered by the insulating layer (3), and the two ends of the first conductive cloth (23) are respectively connected to the circuit board (100) and the connector (200), and the outer cover is attached to the first conductive cloth (23).

3. The transmission line structure according to claim 2, characterized in that, A foil (4) is disposed between the first conductive cloth (23) and the insulating outer skin (12), and the foil (4) has an insulating surface; At least two of the conductor bodies (1) are covered by the foil (4) to form a parallel group, and the insulating surface is attached to the insulating outer sheath (12) in the parallel group.

4. The transmission line structure according to claim 3, characterized in that, The conductive cloth assembly (2) further includes a second conductive cloth (21), which is disposed between the first conductive cloth (23) and the foil (4). The foil (4) of each of the parallel groups is covered with the second conductive cloth (21). The foil (4) also has a conductive surface opposite to the insulating surface, and the second conductive cloth (21) is attached to the conductive surface.

5. The transmission line structure according to claim 4, characterized in that, The conductive cloth assembly (2) further includes a plurality of third conductive cloths (22), which are disposed between the first conductive cloth (23) and the second conductive cloth (21). The third conductive cloths (22) are bundled to the outside of the second conductive cloths (21) of the plurality of parallel groups. The plurality of third conductive cloths (22) are spaced apart along the length direction of the conductor body (1).

6. The transmission line structure according to claim 3, characterized in that, The first end and the second end extend out of the insulating outer sheath (12) respectively. Along the length direction of the conductor body (1), the distance between the end of the foil (4) near the first end and the end of the insulating outer sheath (12) near the first end is no greater than 5 mm, and the distance between the end of the foil (4) near the second end and the end of the insulating outer sheath (12) near the second end is no greater than 5 mm.

7. A data transmission module, characterized in that, The device includes a circuit board (100), a connector (200), and a transmission line structure as described in any one of claims 1-6. The two ends of the conductor body (1) are respectively connected to the pads of the circuit board (100) and the pads of the connector (200). Along the length direction of the conductor body (1), one end of the insulating layer (3) overlaps the circuit board (100), and the other end overlaps the connector (200).

8. The data transmission module according to claim 7, characterized in that, The data transmission module further includes a ground housing (300), which covers the pads of the connector (200) and is detachably connected to the connector (200).

9. The data transmission module according to claim 8, characterized in that, The data transmission module also includes a ground wire (400), one end of which is connected to the circuit board (100) and the other end is connected to the grounded housing (300).

10. The data transmission module according to claim 9, characterized in that, The ground wire (400) is covered with a ground wire conductive cloth (500).

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