High-definition differential transmission wire harness module

Abstract

The utility model discloses a kind of high-definition differential transmission wire harness module, including cable and connector being set to its end part, the multiple wire cores of the cable are welded with the multiple terminals of the connector correspondingly;The connector is equipped with limiting structure, the limiting structure extends along the central axis in the connector, and with the package outer skin end surface of the cable is attached, so that the wire core end part that peeling can be accurately aligned and contact corresponding terminal, and keep two two symmetrical state relative to central axis;It also includes the second inner support body that is wrapped in the outside of welding point and wire core end part, for anchoring and stress release welding point and the end part of the wire core.The utility model realizes the symmetry and equal length of wire core end part in the inside of connector by initiative positioning and elastic support anchoring, guarantee welding point quality while, effectively solve the problem caused by wire core position uncertainty.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness technology, and in particular to a high-definition differential transmission wiring harness module. Background Technology

[0002] Differential signal transmission harnesses are widely used due to their excellent common-mode noise immunity, especially for high-definition video or image transmission. However, their performance is highly dependent on the structure and layout of the harness. Existing differential signal harnesses typically consist of shielded cables and end connectors. Multiple differential pairs of cores at the cable ends need to be stripped and soldered to corresponding terminals inside the connector. However, once the cores are stripped, their original differential pair coupling is broken. During soldering, positional shifts and twists can easily occur, leading to asymmetry. This causes impedance abrupt changes in the transmission path, resulting in signal reflection, increased common-mode noise, and mode switching, severely degrading the quality of high-speed differential signals. This manifests as noise, ghosting, or even image interruptions.

[0003] A common solution is to strip the wire core end as short as possible. However, since the internal space of the connector is limited, excessively short exposed ends make it difficult to solder the wire core to the terminal, which may result in poor solder joint quality. In actual use, when the cable is bent, vibrated or pulled, stress is concentrated on the solder joint and the fragile root of the wire core, which is not effectively protected. This can easily lead to fatigue cracking of the solder joint or wire core breakage, resulting in connection failure. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a high-definition differential transmission harness module, which achieves symmetry and equal length of the wire core ends inside the connector through active positioning and elastic support anchoring, ensuring the quality of the welding point while effectively solving the problem caused by the uncertain position of the wire core.

[0005] Technical Solution: To achieve the above objectives, this utility model provides a high-definition differential transmission harness module, comprising a cable and a connector disposed at its end. Multiple cores of the cable are welded to multiple terminals of the connector. The connector is provided with a limiting structure extending along the central axis of the connector and fitting against the outer sheath of the cable, enabling the stripped core ends to be precisely aligned and contact the corresponding terminals, maintaining a symmetrical state relative to the central axis. It also includes a second inner support body wrapped around the outside of the welding points and the core ends, used to anchor and release stress on the welding points and the core ends.

[0006] Furthermore, the connector is provided with a first inner support body, and a plurality of terminals are fixed symmetrically in pairs inside the first inner support body with reference to the central axis of the first inner support body; the limiting structure is provided at the rear end of the first inner support body.

[0007] Furthermore, the connector also includes a shielding ring, the middle of which is tightly fitted onto the outside of the first inner support body, the rearwardly extending portion of which surrounds the outside of each welding point, and the rear end of the shielding ring is tightly pressed against the shielding layer of the cable.

[0008] Furthermore, an elastic medium is filled in the gap between the inner space at the rear of the shielding ring and each welding point to form the second inner support.

[0009] Furthermore, the limiting structure includes a positioning plate, which is connected to the first inner support body via a limiting rod; the positioning plate is attached to the outer sheath of the cable, and has a plurality of positioning holes that match the outer diameter of the wire core insulation layer.

[0010] Furthermore, the inner wall of the shielding ring is provided with an inwardly protruding retaining ring, which is fitted into an annular groove formed on the outer surface of the second inner support.

[0011] Furthermore, an outer sheath is provided on the outside of the shielding ring, and the outer sheath fixes the shielding ring to the outer periphery of the first inner support, the second inner support, and the cable shielding layer by wrapping and pressing.

[0012] Beneficial Effects: This high-definition differential transmission harness module, through active alignment and limiting, ensures that each pair of differential wires maintains an ideal symmetrical geometry from the moment the cable enters the connector until the solder joint, guaranteeing the symmetry and equal length of the wire cores within the connector, thereby improving the signal integrity of the harness. The combination of rigidity and flexibility in the stress relief and anchoring structure absorbs and disperses stress at the solder joints, protecting them. This allows for improved solder joint quality by stripping more insulation layers, while compensating for the loss of uniform insulation environment due to further stripping and resolving a series of problems that may arise from uncertain wire core positions. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of one embodiment of the present utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of a connector and cable end according to an embodiment of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] As attached Figure 1-2A high-definition differential transmission harness module includes a cable 1 and a connector 2 disposed at its end. Multiple cores 11 of the cable 1 are correspondingly soldered to multiple terminals 21 of the connector 2. The connector 2 has a first inner support body 23, and the multiple terminals 21 are symmetrically fixed inside the first inner support body 23 in pairs, with the central axis of the first inner support body 23 as a reference. A limiting structure 5 is provided at the rear end of the first inner support body 23. This limiting structure extends along its central axis and fits against the outer sheath of the cable 1, allowing the stripped ends of the cores 11 to be precisely aligned and contact the corresponding terminals 21, maintaining a symmetrical state relative to the central axis.

[0017] This design first uses the first inner support 23 to fix and maintain the symmetry of the terminals inside the connector, and then uses a specially designed limiting structure 5 to radially constrain and axially position the wire core itself at the tail. This ensures that from the moment the cable enters the connector, each differential pair maintains an ideal symmetrical geometry until the solder joint. It provides an active and precise pre-positioning structure, minimizing impedance abrupt changes and mode transitions caused by uncertain wire core positions, which is crucial for transmitting high-speed differential signals such as high-definition images.

[0018] Both the first inner support 23 and the limiting structure 5 can be injection molded structural parts with certain strength and can be integrally injection molded, which can play a good supporting and fixing role and keep the relative position of multiple terminals stable. The limiting structure 5 includes a positioning plate 51, which is connected to the first inner support 23 through a limiting rod 52. The positioning plate 51 is attached to the outer end face of the cable 1, and has a number of positioning holes that match the outer diameter of the wire core insulation layer 13. Taking advantage of the fact that the outer insulation layer of the cable is absolutely uniform during manufacturing, a small section of insulation layer (e.g., the size of the positioning hole depth) is retained at the root of the exposed core during stripping. This section is used to mate with the positioning hole, achieving alignment between the exposed core and the corresponding terminal. This allows the stripped core end to be slightly longer, enabling better welding, ensuring welding quality, and ensuring that the exposed core portion is straightened after welding. One end is limited by the positioning hole, and the other end is limited by the terminal, thus ensuring that the ends of the two cores in the same differential pair are absolutely symmetrical and of equal length.

[0019] The connector 2 further includes a shielding ring 22, the central part of which is tightly fitted around the outside of the first inner support 23, and its rearward extension surrounds the outside of each solder joint 20. The rear end of the shielding ring 22 is tightly pressed against the shielding layer 12 of the cable 1. An elastic medium is filled in the gap between the inner space at the rear of the shielding ring 22 and each solder joint to form a second inner support 3, used to anchor and stress-release the ends of each wire core 11.

[0020] First, the shielding ring 22 is rigidly centered and positioned by the first inner support body 23, thereby ensuring that the exposed wire core and terminal part of the second inner support body 3, which is cast based on the shielding ring restricted area, constitutes a uniformly distributed insulating medium and fixes the relative position of each welding point, so that the symmetry and equal length of the wire core inside the connector can be more stable and maintained for a longer time.

[0021] Furthermore, the first inner support 23 provides rigid positioning, while the second inner support 3 provides flexible support. It "wraps" and "buffers" the fragile solder joints and the root of the wire core. When the cable is subjected to bending or vibration, the stress is absorbed and dispersed by the elastic medium, avoiding stress concentration at the solder joint, and greatly improving the fatigue resistance and long-term reliability of the connection. This solves one of the most common failure modes of high-speed cables.

[0022] An outer sheath 4 is fitted around the outer side of the shielding ring 22. The outer sheath 4 secures the shielding ring 22 to the outer periphery of the first inner support 23, the second inner support 3, and the cable shielding layer 12 by wrapping and pressing. The inner wall of the shielding ring 22 has an inwardly protruding retaining ring 221, which fits into an annular groove formed on the outer surface of the second inner support 3. The inner wall of the outer sheath 4 has a limiting ridge 41, which fits into an annular groove on the outer surface of the shielding ring 22.

[0023] The shielding ring 22 has multiple functions. Its front end serves as a connector housing or metal liner, and its rear end is crimped to the cable shielding layer 12, ensuring 360° shielding continuity. At the same time, it also serves as an intermediate carrier, simultaneously connecting the first and second inner supports and the outer sheath, making the overall structure compact and tightly connected.

[0024] Furthermore, the inner convex retaining ring 221 interlocks with the second inner support body 3, and the outer ring groove interlocks with the limiting protrusion 41 of the outer sheath 4, forming a robust mechanical whole. This "double-locking" structure prevents relative displacement or loosening of the components under stress. It achieves excellent electromagnetic shielding performance while ensuring the mechanical robustness and integrity of the entire connector assembly.

[0025] Preferably, the annular groove on the outer side of the shielding ring 22 is radially aligned with the inner convex retaining ring 221 on its inner side. In a preferred embodiment, before assembly, the shielding ring 22 is first stamped to form an inwardly protruding ridge in a circumferential direction. This ridge forms the inner convex retaining ring 221 on its inner side and an annular groove on its outer side. Both the second inner support 3 and the outer sheath 4 are injection molded, thus directly forming an interlocking structure without the need for press-fitting on the outer side of the second inner support 3, thereby preventing extrusion deformation of the internal differential pair.

[0026] The second inner support 3 is made of a relatively soft plastic, such as TPU. This inner mold material flows between the wire cores, solidifying the wire cores, corresponding terminals, and outer shielding rings into a whole. However, the soft material does not rigidly compress these structures.

[0027] The tail end of the shielding ring is pressed tightly against the exposed braided mesh and protective layer of the cable. A rigid plastic, such as PVC or nylon, is injected into the outside of the entire shielding ring to form an outer sheath. This rigid outer sheath firmly grips the shielding ring, the rear half of the braided mesh, and the outermost protective layer of the cable. A soft inner molding compound, like a cushioning gel, surrounds and supports each pair of differential wires, preventing relative movement and deformation.

[0028] In summary, this solution organically integrates a series of interconnected and synergistic mechanical structures (limiting structure, double support body, and multi-functional shielding ring). While ensuring the quality of the solder joints, it effectively solves the problems caused by the uncertain position of the wire core. Any compressive force from the outer sheath is absorbed and evenly distributed by the soft inner mold, thus preventing localized high-pressure points from compressing the wire core. The entire structure becomes a robust whole, and stress is buffered and dispersed over a larger area during bending, avoiding sharp-angle bending of the cable at the connector root.

[0029] The above are merely preferred embodiments 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 high-definition differential transmission harness module, comprising a cable (1) and a connector (2) disposed at its end, wherein a plurality of wire cores (11) of the cable (1) are correspondingly welded to a plurality of terminals (21) of the connector (2); Its features are: The connector (2) is provided with a limiting structure (5), which extends along the central axis of the connector (2) and fits against the outer sheath of the cable (1), so that the stripped wire core (11) end can be precisely aligned and contact the corresponding terminal (21), and maintain a symmetrical state relative to the central axis. It also includes a second inner support (3) wrapped around the outside of the weld point (20) and the end of the wire core (11) for anchoring and stress-relieving the weld point (20) and the end of the wire core (11).

2. The high-definition differential transmission harness module according to claim 1, characterized in that: The connector (2) is provided with a first inner support body (23), and a plurality of terminals (21) are fixed symmetrically in pairs inside the first inner support body (23) with the central axis of the first inner support body (23) as a reference; the limiting structure (5) is provided at the rear end of the first inner support body (23).

3. A high-definition differential transmission harness module according to claim 2, characterized in that: The connector (2) also includes a shielding ring (22), the middle part of which is tightly fitted around the outside of the first inner support (23), the rearward part of which surrounds the outside of each welding point (20), and the rear end of the shielding ring (22) is tightly pressed onto the shielding layer (12) of the cable (1).

4. A high-definition differential transmission harness module according to claim 3, characterized in that: An elastic medium is filled in the gap between the inner space at the rear of the shielding ring (22) and each welding point to form the second inner support body (3).

5. A high-definition differential transmission harness module according to claim 2 or 4, characterized in that: The limiting structure (5) includes a positioning plate (51), which is connected to the first inner support (23) through a limiting rod (52); the positioning plate (51) is attached to the outer end face of the cable (1) and has a plurality of positioning holes that match the outer diameter of the wire core insulation layer (13).

6. A high-definition differential transmission harness module according to claim 3, characterized in that: The inner wall of the shielding ring (22) is provided with an inwardly protruding retaining ring (221), which is fitted into the annular groove formed on the outer surface of the second inner support (3).

7. A high-definition differential transmission harness module according to claim 6, characterized in that: The shielding ring (22) is fitted with an outer sheath (4), which fixes the shielding ring (22) to the outer periphery of the first inner support (23), the second inner support (3) and the cable shielding layer (12) by wrapping and pressing.

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