Wire harness connector

Abstract

A wire harness connector comprises a cable assembly, an outer conductor, a locking fastener and a protective shell, the outer conductor is of a hollow cylinder structure, the cable assembly is installed in the outer conductor, the outer conductor and the locking fastener are installed in the protective shell, the outer conductor comprises a butt joint section and a riveting section, a boss is arranged on the butt joint section, and the butt joint sections in front of and behind the boss keep straight and smooth; the cable assembly in the butt joint section comprises an inner insulator, the cable assembly in the riveting section comprises a core wire, an insulating layer and a braid layer, a step part for transition is arranged at the joint of the butt joint section and the riveting section, and the tail part of the inner insulator and the head part of the braid layer are flush with the step part. By changing the position of the boss of the outer conductor and shortening the gap between the inner insulator and the braid layer, the length of the outer conductor can be effectively shortened, and the improved straight-head wire harness joint can well meet the requirement of miniaturization of a component structure while the SI performance of a product is not reduced.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically a wire harness connector. Background Technology

[0002] Connectors are signal hubs that connect automotive electronic systems. With the rapid development of automotive electrification and intelligence, higher requirements have been placed on the miniaturization of connectors. It is urgent to innovate in terms of connector structure and processing technology to update and iterate traditional connectors and adapt to market development trends.

[0003] Coaxial connectors have two types of wire harness connectors: straight and bent. Straight connectors are longer and take up more space, which is not conducive to the installation and wiring of connectors in the vehicle. Although bent connectors shorten the length, they are more complex to manufacture, more expensive, and can reduce SI performance.

[0004] Therefore, it is necessary to design a shortened straight-head wire harness connector that will not reduce SI performance and can be assembled and wired in confined spaces, thereby reducing processing costs. Utility Model Content

[0005] This invention provides a wire harness connector that significantly shortens the outer conductor length and compresses the connector size without compromising SI performance, achieving connector miniaturization and meeting the needs of insertion and wiring in confined spaces, thus offering greater flexibility. The purpose of this invention is achieved through the following solutions:

[0006] A wire harness connector includes a cable assembly, an outer conductor, a locking mechanism, and a protective shell. The outer conductor is a hollow cylindrical structure. The cable assembly is installed inside the outer conductor, and the outer conductor and locking mechanism are installed inside the protective shell. The outer conductor includes a mating section and a riveting section. A boss is provided on the mating section, and the mating section before and after the boss remains straight and smooth. The cable assembly in the mating section includes an inner insulator, and the cable assembly in the riveting section includes a core wire, an insulation layer, and a braided layer. The diameter of the mating section is smaller than the diameter of the riveting section, and a stepped transition is provided at the junction of the two. The tail of the inner insulator and the head of the braided layer are flush with the stepped transition. In existing straight-head wire harness connectors, the boss is usually located after the mating section and before the riveting section. The improved wire harness connector places the boss on the mating section of the outer conductor, eliminating the need to reserve space for the boss along the length of the outer conductor. The characteristic impedance is related to the conductor diameter. The straight and smooth mating sections before and after the boss result in minimal changes in the conductor diameter, smaller fluctuations in high-frequency characteristic impedance matching, and more stable electrical performance of the product. The tail of the inner insulator inside the docking section is flush with the step section, and the head of the braided layer inside the riveting section is flush with the step section. Only a very small assembly gap is reserved between the inner insulator and the braided layer, which helps to ensure the continuity and integrity of signal transmission.

[0007] Preferably, the mating section and the inner insulator are fixed by a dotted fixing method. In the prior art, to ensure that the inner insulator can stop in time during the insertion of the outer conductor, the mating section is set as two sections with different inner diameters, and a limiting step is set at the joint. The limiting step is used to axially position the inner insulator. Replacing the limiting step with a dotted fixing method helps to achieve a smooth and flat outer conductor surface.

[0008] Preferably, the inner insulator is provided with an annular groove at the position where it is fixed to the outer conductor.

[0009] Preferably, the inner wall of the protective shell has a stop portion in front of the boss, and the locking member has an anti-retraction portion behind the boss. The stop portion and the anti-retraction portion cooperate to lock and limit the outer conductor. The outer conductor is inserted axially into the protective shell. The stop portion of the protective shell contacts the boss in front of it, stopping the outer conductor from being pushed further in. The locking member is inserted into the protective shell perpendicular to the installation direction of the outer conductor. The anti-retraction portion contacts the outer conductor behind the boss, limiting its movement. The stop portion and the anti-retraction portion act on the boss from front to back, together locking and fixing the outer conductor.

[0010] Preferably, the anti-retraction part is engaged after the boss and before the step part, and the anti-retraction part has an arc-shaped surface that presses against the outer conductor.

[0011] Preferably, at a position corresponding to the docking section, the inner wall of the protective shell is provided with a first protruding rib that abuts against the surface of the outer conductor, and the first protruding rib is located in front of the boss. Providing a protruding rib on the inner wall of the protective shell that abuts against the surface of the outer conductor can reduce the gap between the inner wall of the protective shell and the surface of the outer conductor, and prevent the outer conductor from swaying inside the protective shell.

[0012] Preferably, the first rib is disposed on the surface of the stop portion.

[0013] Preferably, at the position corresponding to the riveting section, the inner wall of the protective shell is provided with a second protruding rib that abuts against the surface of the outer conductor.

[0014] Preferably, the boss and the outer conductor are integrally formed by a stamping process.

[0015] Preferably, the width of the boss is twice the material thickness. Setting the boss to be twice the material thickness can reduce the internal cavity of the outer conductor and avoid large fluctuations in high-frequency characteristic impedance caused by changes in the conductor diameter.

[0016] Preferably, the boss is a metal component, which is fixed to the surface of the outer conductor by laser welding.

[0017] Preferably, the boss is fixed to the surface of the outer conductor by injection molding.

[0018] The beneficial effects of this utility model are as follows: It provides a wire harness connector, mainly including a cable assembly, an outer conductor, a protective shell, and a locking element. By changing the position of the boss, the boss is placed on the mating section of the outer conductor. The insulator in the mating section and the braided layer in the riveting section are flush with the stepped portion, with only a pre-existing assembly gap between the insulator and the braided layer. While maintaining good SI performance using a straight head structure, the boss does not occupy space in the length direction of the outer conductor, effectively compressing the size of the wire harness connector and achieving miniaturization of the connector structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a wire harness connector in an embodiment of this utility model;

[0020] Figure 2 This is an exploded view of a wire harness connector according to an embodiment of the present utility model;

[0021] Figure 3 This is an exploded view of the outer conductor and cable assembly in an embodiment of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of a wire harness connector according to an embodiment of the present utility model;

[0023] Figure 5 This is a structural schematic diagram of a wire harness connector from one perspective in an embodiment of this utility model;

[0024] Figure 6 This is a structural schematic diagram of a wire harness connector from another perspective in an embodiment of this utility model;

[0025] The reference numerals in the accompanying drawings include:

[0026] Wire harness connector-1, cable assembly-20, inner insulator-201, annular groove-2011, core wire-202, insulation layer-203, braided layer-204, outer conductor-30, butt joint section-301, boss-3011, riveting section-302, stepped part-303, locking part-40, anti-retraction part-401, arc surface-4011, protective shell-50, stop part-501, first convex rib-502, second convex rib-503. Detailed Implementation

[0027] This application provides a wire harness connector that shortens the overall length of the wire harness connector, solving the problem that the straight wire harness connector structure in the prior art occupies a large space and is not conducive to installation and wiring.

[0028] The technical solution in this application is to solve the above-mentioned technical problems, and the overall approach is as follows:

[0029] A wire harness connector has a boss placed on the mating section of the outer conductor, while the insulator and braided layer are flush with the stepped portion. By improving the outer conductor structure, the space occupied by the boss in the length direction of the outer conductor is reduced, and the gap between the insulator and the braided layer is shortened. This can compress the size of the wire harness connector, reduce fluctuations during signal transmission, and make the product SI performance more stable.

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] refer to Figure 1 As shown, a wire harness connector 1 includes a cable assembly 20, an outer conductor 30, a locking member 40, and a protective shell 50. The cable assembly 20 is installed inside the outer conductor 30, and the outer conductor 30 and the locking member 40 are installed inside the protective shell 50.

[0032] refer to Figure 2 , Figure 3 , Figure 4 As shown, the outer conductor 30 is a hollow cylindrical structure, including a mating section 301 and a riveting section 302. A boss 3011 is provided on the mating section 301. The cable assembly 20 inside the mating section 301 includes an inner insulator 201. The cable assembly 20 inside the riveting section 302 includes a core wire 202, an insulation layer 203, and a braided layer 204. The diameter of the mating section 301 is smaller than the diameter of the riveting section 302. A stepped portion 303 is provided at the junction of the two for transition. The tail of the inner insulator 201 and the head of the braided layer 204 are flush with the stepped portion 303. In existing structures, the boss 3011 is usually located between the mating section 301 and the riveting section 302, and the interior of the boss 3011 corresponds to the insulation layer 203 of the cable assembly 20. In the improved structure, the boss 3011 is set on the mating section 301, eliminating the need to reserve additional space for the boss 3011 in the length direction of the outer conductor 30, effectively shortening the overall length of the outer conductor 30. At the same time, the inner insulator 201 and the braided layer 204 are flush with the step portion 303, with only a very small assembly gap between them, resulting in stronger signal continuity during transmission.

[0033] The boss 3011 is a prominent feature set on the outer conductor 30, and can be formed in various ways: the boss 3011 and the outer conductor 30 are integrally formed by stamping process; furthermore, the width of the boss 3011 is twice the material thickness. The narrower the boss 3011, the fewer the internal cavities, which is beneficial to optimizing the SI performance of the product; the boss 3011 is a hardware part and is fixed to the surface of the outer conductor 30 by laser welding; the boss 3011 is fixed to the surface of the outer conductor 30 by injection molding.

[0034] The mating sections 301 before and after the boss 3011 remain straight and smooth. The inner insulator 201 is located within the mating section 301 and is fixed to the outer conductor 30 by dotting. At the dotted fixing position with the outer conductor 30, the inner insulator 201 is provided with annular grooves 2011 to match the dotted features. Traditional wire harness connectors 1 use two sections of mating section 301 with unequal diameters and a limiting step at the junction to stop the inner insulator 201 from being inserted into the outer conductor 30. In the improved structure, the outer conductor 30 and inner insulator 201 are fixed by dotting, allowing the outer surface of the mating section 301 to remain straight and smooth. This results in minimal conductor diameter variation, smaller high-frequency characteristic impedance matching fluctuations, and more stable product electrical performance.

[0035] A stop 501 is provided on the inner wall of the protective shell 50 before the boss 3011. During the insertion of the outer conductor 30 into the protective shell 50, the stop 501 can limit the axial installation depth of the outer conductor 30, assisting in determining whether the outer conductor 30 is installed in place, and providing a working indication for the subsequent installation of the locking member 40. An anti-retraction part 401 is provided on the locking member 40 after the boss 3011. The anti-retraction part 401 is engaged after the boss 3011 and before the step 303. The anti-retraction part 401 has an arc-shaped surface 4011 that presses against the outer conductor 30. The locking member 40 is inserted into the protective shell 50 perpendicular to the length direction of the outer conductor 30, with the arc-shaped surface 4011 abutting against the surface of the outer conductor 30. The stop 501 of the protective shell 50 and the anti-retraction part 401 of the locking member 40 cooperate with each other to lock and limit the outer conductor 30 on the boss 3011 of the outer conductor 30 in the axial direction.

[0036] refer to Figure 5 , Figure 6 As shown, at the position corresponding to the mating section 301, the inner wall of the protective shell 50 is provided with a first protruding rib 502 that abuts against the surface of the outer conductor 30. The first protruding rib 502 is located in front of the boss 3011. Further, the first protruding rib 502 is located on the surface of the stop portion 501. At the position corresponding to the riveting section 302, the inner wall of the protective shell 50 is provided with a second protruding rib 503 that abuts against the surface of the outer conductor 30. The first protruding rib 502 and the second protruding rib 503 can reduce the gap between the inner wall of the protective shell 50 and the surface of the outer conductor 30, preventing the outer conductor 30 from swaying within the protective shell 50 due to external force vibrations or other factors, thus maintaining the stability of the internal structure of the product.

[0037] In summary, this utility model designs a wire harness connector that effectively shortens the length of the outer conductor by changing the position of the boss and shortening the gap between the inner insulator and the braided layer. Without compromising the SI performance of the product, the improved straight wire harness connector can also well meet the needs of component miniaturization and is more flexible.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wiring harness connector, characterized by, The cable assembly, the outer conductor, the locking piece, the protective shell, the outer conductor is a hollow cylinder structure, the cable assembly is installed in the outer conductor, the outer conductor and the locking piece are installed in the protective shell, wherein: The outer conductor includes a butt joint section and a riveting section, a boss is arranged on the butt joint section, and the butt joint sections before and after the boss remain straight and smooth; The cable assembly in the butt joint section includes an inner insulator, the cable assembly in the riveting section includes a core wire, an insulating layer, and a braided layer, the diameter of the butt joint section is smaller than the diameter of the riveting section, and a stepped transition is arranged at the joint of the two sections, and the tail of the inner insulator and the head of the braided layer are flush with the stepped transition.

2. A wiring harness connector according to claim 1, wherein The butt joint section and the inner insulator are fixed by dotting.

3. A wiring harness connector according to claim 2, wherein The inner insulator is provided with an annular groove at the position fixed by dotting with the outer conductor.

4. A wiring harness connector according to claim 1, wherein The inner wall of the protective shell is provided with a stop portion in front of the boss, the locking piece is provided with a retreat prevention portion behind the boss, and the stop portion and the retreat prevention portion cooperate to lock and position the outer conductor.

5. A wiring harness connector according to claim 4, wherein The retreat prevention portion is clamped behind the boss and in front of the stepped transition, and the retreat prevention portion has an arc surface in contact with the outer conductor.

6. A wiring harness connector according to claim 4, wherein At the position corresponding to the butt joint section, the inner wall of the protective shell is provided with a first convex rib in contact with the surface of the outer conductor, and the first convex rib is arranged in front of the boss.

7. A wiring harness connector according to claim 6, wherein The first convex rib is arranged on the surface of the stop portion.

8. A wiring harness connector according to claim 1, wherein At the position corresponding to the riveting section, the inner wall of the protective shell is provided with a second convex rib in contact with the surface of the outer conductor.

9. A wiring harness connector according to claim 1, wherein The boss and the outer conductor are integrally formed by stamping process.

10. A wiring harness connector according to claim 9, wherein The boss has a width of twice the material thickness.

11. A wiring harness connector according to claim 1, wherein The boss is a hardware part fixed on the surface of the outer conductor by laser welding.

12. A wiring harness connector according to claim 1, wherein The boss is fixed on the surface of the outer conductor by injection molding.

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