HDMI connecting line with parallel pair structure

Abstract

The utility model relates to the technical field of HDM I connecting lines, and particularly discloses an HDM I connecting line with a parallel pair structure, which comprises a shielding layer, a protective layer wrapped on the outer side of the shielding layer, a plurality of first line bodies positioned on the inner side of the shielding layer and a plurality of second line bodies positioned on the inner side of the shielding layer, the first wire body comprises two first wires, two grounding wires, an insulating layer and an outer shielding layer, the insulating layer wraps the two first wires, and the two first wires are parallel to each other and are symmetrically distributed along the middle line of the width direction of the first wire body; grooves are formed in the two sides, in the thickness direction of the first wire body, of the insulating layer, the two grounding wires are arranged in the two grooves respectively, and the two grounding wires are located in the middle of the first wire body in the width direction; the outer shielding layer wraps the two grounding wires and the insulating layer. According to the utility model, the differential impedance of the whole HDM I connecting line can be reduced, and the signal transmission quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of HDMI cable technology, and in particular to an HDMI cable with a parallel pair structure. Background Technology

[0002] HDMI cables are high-definition multimedia interface cables capable of transmitting uncompressed high-definition video and multi-channel audio data with high quality, and their applications are now widespread. To facilitate the manufacturing of HDMI cables, existing technologies have also developed HDMI cables with parallel pair structures, as shown in Chinese utility model patent publication number CN216528074U. These parallel pairs have an integrally molded insulation layer with two symmetrically arranged core wires inside. A ground wire is located on the outside of the insulation layer. Because only a single ground wire is used, the wiring is asymmetrical, making it difficult to reduce the differential impedance of the entire HDMI cable and improve signal transmission quality. Utility Model Content

[0003] This invention provides an HDMI cable with a parallel pair structure, which can reduce the differential impedance of the entire HDMI cable and improve signal transmission quality.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides an HDMI cable with a parallel pair structure, including a shielding layer, a protective layer wrapped around the outside of the shielding layer, a plurality of first wires located inside the shielding layer, and a plurality of second wires located inside the shielding layer. Each first wire includes two first conductors, two grounding wires, an insulating layer, and an outer shielding layer. The insulating layer encloses the two first conductors, which are parallel to each other and symmetrically distributed along the centerline of the width direction of the first wire. The insulating layer has grooves on both sides of the thickness direction of the first wire, and the two grounding wires are respectively disposed in the two grooves, with both grounding wires located at the middle position of the first wire in the width direction. The outer shielding layer encloses both the two grounding wires and the insulating layer.

[0006] In some embodiments, both grounding wires are located inside the two sides of the first wire body in the thickness direction.

[0007] In some embodiments, the bottom of the groove is arc-shaped.

[0008] In some embodiments, the connection between the two sidewalls of the groove and the sidewall of the first line body in the thickness direction is designed with rounded corners.

[0009] In some embodiments, the shielding layer includes an aluminum foil shielding layer and an aluminum-magnesium wire shielding layer wrapped around the outside of the aluminum foil shielding layer.

[0010] In some embodiments, the second wire body includes an electronic wire conductor and an electronic wire insulation layer that wraps around the electronic wire conductor.

[0011] In some embodiments, both the first and second wires are provided with five wires.

[0012] In some embodiments, the first line body surrounds the outside of the second line body.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. This utility model includes two grounding wires, which are respectively set in two grooves, and both grounding wires are located in the middle of the width direction of the first wire body, in a symmetrical distribution state. This can reduce the differential impedance of the entire HDMI I connection line and improve the signal transmission quality.

[0015] 2. Both grounding wires are located inside the two sides of the first wire body in the thickness direction. The outer shielding layer has a more regular wrapping structure, which makes it easier to wrap the outer shielding layer and the wrapping quality is higher.

[0016] 3. The bottom of the groove is arc-shaped, which matches the outer circumference of the grounding wire, allowing the grounding wire to fit snugly against the bottom of the groove and remain relatively stable within it.

[0017] 4. The connection between the two sidewalls of the groove and the side of the first line body in the thickness direction adopts a rounded corner design, which makes the transition smoother, facilitates the forming of the insulation layer, and reduces the wear of the outer shielding layer compared with other structures. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of an HDM I connection line with a parallel pair structure according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the first line body according to an embodiment of the present invention.

[0020] The attached figures are labeled as follows:

[0021] Shielding layer 100, aluminum foil shielding layer 110, aluminum-magnesium wire shielding layer 120;

[0022] Protective layer 200;

[0023] First wire body 300, first conductor 310, grounding wire 320, insulating layer 330, groove 331, outer shielding layer 340;

[0024] Second wire body 400, electronic wire conductor 410, electronic wire insulation layer 420. Detailed Implementation

[0025] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0026] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0027] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0028] An embodiment of this utility model provides an HDM I connector with a parallel pair structure, such as... Figure 1 and Figure 2 As shown, the system includes a shielding layer 100, a protective layer 200 wrapped around the outside of the shielding layer 100, a plurality of first wires 300 located inside the shielding layer 100, and a plurality of second wires 400 located inside the shielding layer 100. The shielding layer 100 is used to shield external signals, reduce interference received by the first wires 300 and second wires 400, and ensure the quality of signal transmission. The protective layer 200 provides wrapping protection for the entire wire and can be made of PVC or other materials. The first wires 300 include two first conductors 310, two grounding wires 320, an insulation layer 330, and an outer shielding layer 340. The insulation layer 330 wraps around the two first conductors 310 and can be integrally formed. The two first conductors 310 are parallel to each other and symmetrically distributed along the centerline of the width direction of the first wire 300, forming a parallel pair structure.

[0029] The insulating layer 330 has grooves 331 on both sides of the first wire body 300 in the thickness direction. Two grounding wires 320 are respectively disposed in the two grooves 331, and both grounding wires 320 are located at the middle position of the first wire body 300 in the width direction, forming two relatively symmetrically distributed grounding wires 320. The outer shielding layer 340 encloses both grounding wires 320 and the insulating layer 330. This embodiment uses two grounding wires 320, which are relatively symmetrically distributed. When there is a grounding signal, the two grounding wires 320 can transmit the grounding signal simultaneously, which can reduce the differential impedance of the entire HDMI I connection line and improve the signal transmission quality. At the same time, the grooves 331 play a positioning role for the grounding wires 320, which can reduce the displacement of the grounding wires 320 and keep them in the grooves 331.

[0030] In some embodiments, both grounding wires 320 are located inside the two sides of the first wire body 300 in the thickness direction, that is, neither grounding wire 320 protrudes from the groove 331. When the outer shielding layer 340 is wrapped, it will not protrude due to the grounding wires 320. Therefore, the wrapping structure of the outer shielding layer 340 is more regular, easier to wrap, and the wrapping quality is higher.

[0031] In some embodiments, the bottom of the groove 331 is arc-shaped, which is adapted to the outer periphery of the grounding wire 320, and the grounding wire 320 can fit tightly against the bottom of the groove 331 to be relatively stably held in the groove 331.

[0032] Furthermore, the connection between the two sidewalls of the groove 331 and the side of the first line body 300 in the thickness direction adopts a rounded corner design, which makes the transition smoother, facilitates the forming of the insulating layer 330, and reduces the wear of the outer shielding layer 340 compared to other structures.

[0033] In some embodiments, the insulating layer 330 may be made of foamed material, and the outer shielding layer 340 may be made of aluminum foil.

[0034] In some embodiments, the shielding layer 100 includes an aluminum foil shielding layer 110 and an aluminum-magnesium wire shielding layer 120 wrapped around the outside of the aluminum foil shielding layer. The two-layer shielding structure can improve the shielding effect and further ensure the quality of signal transmission.

[0035] In some embodiments, the second wire body 400 includes an electronic wire conductor 410 and an electronic wire insulation layer 420 that wraps around the electronic wire conductor 410. The electronic wire conductor 410 may be a single wire or multiple wires twisted together.

[0036] In some embodiments, both the first wire 300 and the second wire 400 are provided with five wires to meet the needs of specific application scenarios.

[0037] Furthermore, the first line body 300 is arranged around the outside of the second line body 400, and the size of the first line body 300 is larger than the size of the second line body 400. This distribution conforms to the structural layout of small inside and large outside, making the entire line body more compact.

[0038] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. An HDMI cable with a parallel pair structure, characterized in that: The device includes a shielding layer, a protective layer wrapped around the outside of the shielding layer, multiple first wires located inside the shielding layer, and multiple second wires located inside the shielding layer. Each first wire includes two first conductors, two grounding wires, an insulating layer, and an outer shielding layer. The insulating layer encloses the two first conductors, which are parallel to each other and symmetrically distributed along the centerline of the width direction of the first wire. The insulating layer has grooves on both sides of the thickness direction of the first wire, and the two grounding wires are respectively disposed in the two grooves, with both grounding wires located at the middle position of the width direction of the first wire. The outer shielding layer encloses both the two grounding wires and the insulating layer.

2. The HDMI cable with a parallel pair structure according to claim 1, characterized in that: Both grounding wires are located inside the two sides of the first wire body in the thickness direction.

3. The HDMI cable with a parallel pair structure according to claim 1, characterized in that: The bottom of the groove is arc-shaped.

4. The HDMI cable with a parallel pair structure according to claim 3, characterized in that: The connection between the two sidewalls of the groove and the sidewall of the first linear body in the thickness direction is designed with rounded corners.

5. The HDMI cable with a parallel pair structure according to any one of claims 1-4, characterized in that: The shielding layer includes an aluminum foil shielding layer and an aluminum-magnesium wire shielding layer wrapped around the outside of the aluminum foil shielding layer.

6. The HDMI cable with a parallel pair structure according to any one of claims 1-4, characterized in that: The second wire body includes an electronic wire conductor and an electronic wire insulation layer that wraps around the electronic wire conductor.

7. The HDMI cable with a parallel pair structure according to any one of claims 1-4, characterized in that: The first and second lines each have five wires.

8. The HDMI cable with a parallel pair structure according to claim 7, characterized in that: The first line body surrounds the outside of the second line body.

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