Automobile wire harness connector with waterproof function

Abstract

This invention relates to the field of wire harness connector technology, and particularly to a waterproof automotive wire harness connector, comprising a mating unit, a connecting unit, a wire clamping unit, and a sealing unit. In this invention, the wire clamping unit secures and holds the wires, while the mating unit connects the two clamped wire harnesses. When the wire harnesses expand or contract under external environmental influences, the wiring assembly in the wire clamping unit adaptively expands and contracts, ensuring that the wires in the two wire harnesses remain connected before and after expansion and contraction. During the expansion and contraction of the wire harnesses, the bundling assembly and protective sleeve adaptively move with the expansion and contraction of the wire harnesses. Simultaneously, the copper tube, guide core, guide rod, and guide block in the wiring assembly also adaptively move left and right under the action of the clamping spring and adjusting spring, thereby maintaining sufficient contact area among the guide core, copper tube, and wires to prevent poor contact.

Description

Technical Field

[0001] This invention relates to the field of wire harness connector technology, and in particular to a waterproof automotive wire harness connector. Background Technology

[0002] Automotive wiring harnesses are an important component of automotive electrical systems, and are cables (such as...) used to transmit electrical energy or electrical signals. Figure 1 A typical duct consists of one or more insulated wires, each of which is wrapped with a protective layer. A common design is a protective layer that encloses four insulated wires.

[0003] Automotive wiring harness connectors are special electrical connection devices mainly used to solve the connection problem of wiring harnesses with different length requirements. These connectors allow the wiring harness to stretch and contract freely within a certain range, thereby adapting to length changes caused by mechanical movement or temperature changes, and ensuring the stability and reliability of the electrical connection.

[0004] Currently, there are some problems when connecting two of the four wires in an automotive wiring harness connector: during the extension and retraction of the wiring harness expansion joint, poor contact may occur at the connection point, leading to increased resistance, affecting the stability and efficiency of current transmission, and in severe cases, poor contact may cause excessive local temperature rise, which may cause fire or damage to equipment; at the same time, the frequent extension and retraction of the wiring harness expansion joint leads to poor sealing and reduced waterproof performance. Summary of the Invention

[0005] To solve the above problems, the present invention adopts the following technical solution: a waterproof automotive wiring harness connector, including a docking unit, wherein the docking unit includes a connecting cylinder, and two connecting cylinders are symmetrically arranged on the left and right sides, and a locking component is connected to the end faces of the two connecting cylinders that are close to each other.

[0006] The tensioning module includes an internally threaded tube that is rotatably connected to the side wall of the protective cylinder. The connection between the internally threaded tube and the protective cylinder is sealed. A knob is fixedly connected to the upper end of the internally threaded tube, and a traction bar is threadedly connected to the lower end of the internally threaded tube. Multiple toothed grooves are symmetrically and evenly provided along the length of the traction bar. Multiple teeth that mate with the toothed grooves are evenly and fixedly connected along the length of the outer surface of the strap. Protective cylinders are slidably connected to the ends of the connecting cylinders that are far apart from each other. A connecting unit is connected between the protective cylinder and the connecting cylinder. A wire clamping unit is provided inside the protective cylinder and the connecting cylinder. A sealing unit is also connected to the ends of the two protective cylinders that are far apart from each other.

[0007] The clamping unit includes two perforated plates, and a binding assembly is provided between the two perforated plates. The binding assembly includes rubber sleeves. Four rubber sleeves corresponding to the through holes are uniformly fixedly connected circumferentially between the two perforated plates. The rubber sleeves are deformable structures. Multiple annular grooves for increasing friction are evenly opened on the inner wall of the rubber sleeves on the left and right sides. The outer wall of the rubber sleeves is wrapped with straps. The straps are vortex-shaped and their inner ends are fixedly connected to the rubber sleeves. The outer ends of the four straps are connected to a tensioning module.

[0008] Preferably, the locking component includes slots, and multiple slots are evenly provided circumferentially on the left end face of the right connecting cylinder. The right ends of the multiple slots are interconnected. Multiple locking blocks are evenly fixedly connected circumferentially on the right end face of the left connecting cylinder. The locking blocks are L-shaped and cooperate with the slots. A rubber strip for sealing is also fixedly connected to the right end face of the left connecting cylinder. A limit module is also connected to one of the locking blocks.

[0009] Preferably, the limiting module includes a countersunk hole, and the side wall of the connecting cylinder with the slot is provided with a countersunk hole. One of the locking blocks is provided with a locking hole corresponding to the countersunk hole. The corresponding countersunk hole and the locking hole are connected by a fastener through a thread.

[0010] Preferably, the connecting unit includes a limiting strip, and an annular groove is formed on the inner side of the protective cylinder near the connecting cylinder. Multiple limiting strips are evenly arranged circumferentially in the annular groove. The limiting strips are fixedly connected to the protective cylinder. A connecting ring is slidably connected to the multiple limiting strips. The connecting ring is threadedly connected to the outer wall of the connecting cylinder. A rubber ring for sealing is fixedly connected to the end face of the annular groove near the connecting cylinder.

[0011] Preferably, the two perforated plates are symmetrically arranged inside the protective cylinder, and four through holes are evenly opened on the two perforated plates along the circumference. The perforated plate closer to the connecting cylinder is connected to a wiring assembly, and the perforated plate farther from the connecting cylinder is connected to the protective cylinder by a compression spring.

[0012] Preferably, the wiring assembly includes a mounting plate, which is fixedly connected to the inner wall of the connecting cylinder. Four copper tubes corresponding to the through holes and slidable left and right are connected to the mounting plate circumferentially. A guide core is slidably connected in the copper tube. The end of the guide core away from the through hole is disposed outside the copper tube and is fixedly connected to a guide plate. The guide plate and the copper tube are fixedly connected by a compression spring. A telescopic module is connected to the end of the guide core near the through hole. A buckle module is provided on the corresponding guide plates in the two wiring assemblies.

[0013] Preferably, the telescopic module includes a cylindrical groove, and the guide core has a cylindrical groove inside. A slider is slidably connected to the cylindrical groove from left to right. A guide rod is fixedly connected to the end face of the slider away from the guide plate. The end of the guide rod away from the slider slides through the guide core and is fixedly connected to a guide block. The guide block is slidably connected in a copper tube, and the guide block and the guide core are fixedly connected by an adjusting spring.

[0014] Preferably, the buckle module includes a groove, the right end face of the left guide plate has a groove, and the left end face of the right guide plate has a protrusion that matches the groove.

[0015] Preferably, the sealing unit includes a sealing ring, which is disposed at the end of the protective cylinder away from the connecting cylinder, and the sealing cap is threadedly connected to the end of the protective cylinder away from the connecting cylinder, with the sealing ring abutting against the end of the protective cylinder away from the connecting cylinder through the sealing cap.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention uses a wire clamping unit to fix and hold the wires, and uses a docking unit to connect the two wire harnesses that are fixedly clamped. When the wire harnesses expand and contract under the influence of the external environment, the wiring component in the wire clamping unit will adaptively expand and contract, so that the wires in the two wire harnesses always remain connected before and after expansion and contraction.

[0017] 2. During the wire harness extension and retraction process, the bundling assembly and protective sleeve will adaptively move with the extension and retraction of the wire harness. At the same time, the copper tube, guide core, guide rod, and guide block in the wiring assembly will also adaptively move left and right with the movement of the bundling assembly under the action of the compression spring and the adjustment spring, thereby ensuring that the guide core, copper tube, and wire always have sufficient contact area and avoiding poor contact. At the same time, since the sealing ring abuts against the cable protection layer under the action of the sealing cover, a better sealing effect is achieved, improving the waterproof effect. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 This is a three-dimensional structural diagram of the automotive wiring harness in this invention.

[0020] Figure 2 This is a three-dimensional structural diagram of a waterproof automotive wiring harness connector according to the present invention.

[0021] Figure 3 This is a top view of a waterproof automotive wiring harness connector according to the present invention.

[0022] Figure 4 This is the present invention. Figure 3 Sectional view at point AA.

[0023] Figure 5This is an exploded view of the connecting cylinder, protective cylinder, and connecting unit in this invention.

[0024] Figure 6 This is a partial cross-sectional view of the clamping unit of the present invention.

[0025] Figure 7 This is a three-dimensional structural schematic diagram of the clamping unit of the present invention from a first perspective.

[0026] Figure 8 This is a three-dimensional structural schematic diagram of the clamping unit of the present invention from a second perspective.

[0027] In the diagram: 1. Docking unit; 11. Connecting cylinder; 12. Locking assembly; 121. Slot; 122. Block; 123. Rubber strip; 124. Limiting module; 1241. Countersunk hole; 1242. Locking hole; 1243. Fastener; 13. Protective cylinder; 2. Connecting unit; 21. Annular groove; 22. Limiting strip; 23. Connecting ring; 24. Rubber ring; 3. Wire clamping unit; 31. Perforated plate; 32. Through hole; 33. Bundling assembly; 331. Rubber sleeve; 332. Strap; 333. Tensioning module; 3331. Internally threaded tube; 3332. Rotary... Button; 3333, Traction bar; 3334, Gear; 3335, Tooth; 34, Wiring assembly; 341, Mounting plate; 342, Copper pipe; 343, Guide core; 344, Guide plate; 345, Compression spring; 346, Telescopic module; 3461, Cylindrical groove; 3462, Slider; 3463, Guide rod; 3464, Guide block; 3465, Adjusting spring; 347, Snap-on module; 3471, Groove; 3472, Protrusion; 35, Compression spring; 4, Sealing unit; 41, Sealing ring; 42, Sealing cover; 5, Wire; 6, Protective layer. Detailed Implementation

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the invention may be implemented in many different ways as defined and covered by the claims.

[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 5 A waterproof automotive wiring harness connector includes a docking unit 1, which includes two connecting cylinders 11 arranged symmetrically on the left and right sides. A locking component 12 is connected to the end faces of the two connecting cylinders 11 that are close to each other. A protective cylinder 13 is slidably connected to the ends of the connecting cylinders 11 that are far apart from each other. A connecting unit 2 is connected between the protective cylinder 13 and the connecting cylinder 11. A wire clamping unit 3 is provided inside the protective cylinder 13 and the connecting cylinder 11. A sealing unit 4 is also connected to the ends of the two protective cylinders 13 that are far apart from each other.

[0030] In practice, taking the connection of the left-side wire harness as an example, first peel off the protective layer 6 at the end of the left-side wire harness to be connected, so that the four wires 5 are exposed. Then, insert the four wires 5 in the wire harness into the left-side protective cylinder 13. Then, use the wire clamping unit 3 to fix and hold the wires 5. Next, clamp the wires 5 in the right-side cable to be connected in the same way. Finally, connect the two connecting cylinders 11 together and lock them together using the locking component 12.

[0031] See Figure 5 The locking component 12 includes slots 121. Multiple slots 121 are evenly provided on the left end face of the right connecting cylinder 11 along the circumference. The right ends of the multiple slots 121 are interconnected. Multiple locking blocks 122 are evenly fixedly connected on the right end face of the left connecting cylinder 11 along the circumference. The locking blocks 122 are L-shaped and match the shape of the slots 121. A rubber strip 123 for sealing is also fixedly connected on the right end face of the left connecting cylinder 11. A limit module 124 is also connected to one of the locking blocks 122.

[0032] See Figure 5 The limiting module 124 includes a countersunk hole 1241. The side wall of the connecting cylinder 11 with a slot 121 has a through countersunk hole 1241. A locking hole 1242 corresponding to the countersunk hole 1241 is through a locking block 122. The corresponding countersunk hole 1241 and locking hole 1242 are connected by a fastener 1243 through a thread.

[0033] In actual operation, after the wire 5 is fixedly clamped by the clamping unit 3, the card block 122 is inserted into the corresponding card slot 121 and pushed to the bottom of the card slot 121. Then, it is rotated at a certain angle so that the card block 122 is locked in the card slot 121. At this time, the countersunk hole 1241 and the locking hole 1242 are just aligned. The fastener 1243 is screwed into the countersunk hole 1241 and the locking hole 1242, so that the two connecting cylinders 11 can be locked and connected.

[0034] See Figure 4 and Figure 5 The connecting unit 2 includes a limiting strip 22. An annular groove 21 is provided on the inner side of the protective cylinder 13 near the end of the connecting cylinder 11. Multiple limiting strips 22 are evenly arranged circumferentially in the annular groove 21. The limiting strips 22 are fixedly connected to the protective cylinder 13. A connecting ring 23 is slidably connected to the multiple limiting strips 22. The connecting ring 23 is connected to the outer wall of the connecting cylinder 11 by a thread. A rubber ring 24 for sealing is fixedly connected to the end face of the annular groove 21 near the end face of the connecting cylinder 11.

[0035] In actual operation, when the wire harness is stretched or contracted under the influence of the external environment, the connecting ring 23 can slide relative to the limiting strip 22, so that the protective cylinder 13 can also slide left and right relative to the connecting cylinder 11 to compensate for the length change when the wire harness is stretched or contracted. At the same time, under the action of the clamping unit 3, the left and right cables are always in the connected state.

[0036] See Figure 2 , Figure 4 and Figure 6 The clamping unit 3 includes a perforated plate 31. Two perforated plates 31 are symmetrically arranged inside the protective cylinder 13. One perforated plate 31 is slidably connected to the protective cylinder 13, and the other perforated plate 31 is fixedly connected to the protective cylinder 13. Four through holes 32 are evenly opened along the circumference of the two perforated plates 31. A binding assembly 33 is arranged between the two perforated plates 31. A wiring assembly 34 is connected to the perforated plate 31 closer to the connecting cylinder 11. The perforated plate 31 farther away from the connecting cylinder 11 is connected to the protective cylinder 13 by a pressure spring 35.

[0037] See Figure 4 and Figure 6 The binding assembly 33 includes a rubber sleeve 331. Four rubber sleeves 331 corresponding to the through holes 32 are uniformly fixedly connected circumferentially between the two perforated plates 31. The rubber sleeve 331 is a deformable structure. Multiple inner grooves for increasing friction are evenly opened on the inner wall of the rubber sleeve 331. The outer wall of the rubber sleeve 331 is wrapped with straps 332. The straps 332 are vortex-shaped and their inner ends are fixedly connected to the rubber sleeves 331. The outer ends of the four straps 332 are connected to a tensioning module 333.

[0038] See Figure 4 and Figure 6 The tensioning module 333 includes an internally threaded tube 3331, which is rotatably connected to the side wall of the protective cylinder 13 and the connection between the internally threaded tube 3331 and the protective cylinder 13 is sealed. A knob 3332 is fixedly connected to the upper end of the internally threaded tube 3331, and a traction bar 3333 is threadedly connected to the lower end of the internally threaded tube 3331. A plurality of grooves 3334 are symmetrically and evenly provided along the length direction on the traction bar 3333. A plurality of teeth 3335 that cooperate with the grooves 3334 are evenly fixedly connected to the outer surface of the strap 332 along the length direction.

[0039] See Figure 4 , Figure 6 , Figure 7 and Figure 8The wiring assembly 34 includes a mounting plate 341. The mounting plate 341 is fixedly connected to the inner wall of the connecting cylinder 11. Four copper tubes 342, which correspond to the through holes 32 and can slide left and right, are connected circumferentially on the mounting plate 341. A guide core 343 is slidably connected in the copper tube 342. The end of the guide core 343 away from the through hole 32 is located outside the copper tube 342 and is fixedly connected to a guide plate 344. The guide plate 344 and the copper tube 342 are fixedly connected by a compression spring 345. A telescopic module 346 is connected to the end of the guide core 343 near the through hole 32. A buckle module 347 is provided on the corresponding guide plates 344 in the two wiring assemblies 34.

[0040] See Figure 7 and Figure 8 The telescopic module 346 includes a cylindrical groove 3461. The guide core 343 has a cylindrical groove 3461 inside. A slider 3462 is slidably connected to the cylindrical groove 3461. A guide rod 3463 is fixedly connected to the end face of the slider 3462 away from the guide plate 344. The end of the guide rod 3463 away from the slider 3462 slides through the guide core 343 and is fixedly connected to a guide block 3464. The guide block 3464 is slidably connected in the copper tube 342. The guide block 3464 and the guide core 343 are fixedly connected by an adjusting spring 3465.

[0041] See Figure 7 and Figure 8 The buckle module 347 includes a groove 3471. The right end face of the left guide plate 344 is provided with a groove 3471, and the left end face of the right guide plate 344 is fixedly connected with a protrusion 3472 that cooperates with the groove 3471.

[0042] In actual operation, the four wires 5 in the wire harness are inserted into the corresponding through holes 32 and rubber sleeves 331 respectively, and the ends of the wires 5 are inserted into the copper tube 342 and abut against the guide block 3464. Then, the knob 3332 is rotated to make the internal thread tube 3331 rotate, thereby causing the traction bar 3333 to move upward. When the traction bar 3333 moves upward, it drives the teeth 3335 to move through the groove 3334, thereby tightening the strap 332 and clamping the wires 5 in the rubber sleeve 331.

[0043] Next, the two protective cylinders 13 are connected by the locking block 122, the locking groove 121 and the fastener 1243. At this time, the protrusion 3472 will abut in the groove 3471 to limit the two corresponding guide plates 344. At this time, under the action of the compression spring 345, the two guide plates 344 are connected. When current passes through, it will be conducted to the guide plate 344 through the copper tube 342, the guide block 3464, the guide rod 3463 and the guide core 343, thereby connecting the left and right wire harnesses.

[0044] When the wire harness expands or contracts due to external environmental influences, the protective sleeve 13 slides left and right relative to the connecting sleeve 11. At the same time, the guide block 3464 slides left and right adaptively within the copper tube 342 under the action of the adjusting spring 3465, so that the wire 5 is always in contact with the guide block 3464. At this time, the guide rod 3463 also slides left and right within the guide core 343 along with the guide block 3464. The positions of the guide core 343 and the guide plate 344 remain unchanged, ensuring that the two wire harnesses are always in a connected state. During this process, the copper tube 342 can slide adaptively along the mounting plate 341 under the action of the compression spring 345, thereby ensuring that there is sufficient conductive area between the wire 5 and the guide core 343, thus avoiding poor contact caused by the expansion or contraction of the wire harness.

[0045] See Figure 2 and Figure 4 The sealing unit 4 includes a sealing ring 41, which is disposed at the end of the protective cylinder 13 away from the connecting cylinder 11. The sealing cover 42 is threadedly connected to the end of the protective cylinder 13 away from the connecting cylinder 11. The sealing ring 41 abuts against the end of the protective cylinder 13 away from the connecting cylinder 11 through the sealing cover 42. At the same time, the sealing ring 41 also abuts against the cable protection layer 6 under the action of the sealing cover 42, thereby achieving a better sealing effect and improving the waterproof effect.

[0046] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "oil level," "top," "bottom," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0047] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A waterproof automotive wiring harness connector, characterized in that: The device includes a docking unit, which includes a connecting cylinder. Two connecting cylinders are symmetrically arranged on the left and right sides, and a locking component is connected to the end faces of the two connecting cylinders that are close to each other. The tensioning module includes an internally threaded tube, which is rotatably connected to the side wall of the protective cylinder. The connection between the internally threaded tube and the protective cylinder is sealed. A knob is fixedly connected to the upper end of the internally threaded tube, and a traction bar is threadedly connected to the lower end of the internally threaded tube. Multiple toothed grooves are symmetrically and evenly provided along the length of the traction bar. Multiple teeth that mate with the toothed grooves are evenly and fixedly connected to the outer surface of the strap along the length of the strap. Protective cylinders are slidably connected to the ends of the connecting cylinders that are far apart from each other. A connecting unit is connected between the protective cylinder and the connecting cylinder. A wire clamping unit is provided inside the protective cylinder and the connecting cylinder. A sealing unit is also connected to the ends of the two protective cylinders that are far apart from each other. The clamping unit includes two perforated plates, and a binding assembly is provided between the two perforated plates. The binding assembly includes rubber sleeves. Four rubber sleeves corresponding to the through holes are uniformly fixedly connected between the two perforated plates along the circumference. The rubber sleeves are deformable structures. Multiple inner grooves for increasing friction are evenly opened on the left and right sides of the inner wall of the rubber sleeves. The outer wall of the rubber sleeves is wrapped with straps. The straps are vortex-shaped and their inner ends are fixedly connected to the rubber sleeves. The outer ends of the four straps are connected to a tensioning module.

2. The waterproof automotive wiring harness connector according to claim 1, characterized in that: The locking component includes slots. Multiple slots are evenly provided on the left end face of the right connecting cylinder along the circumference. The right ends of the multiple slots are interconnected. Multiple locking blocks corresponding to and cooperating with the slots are evenly fixedly connected on the right end face of the left connecting cylinder along the circumference. A rubber strip for sealing is also fixedly connected on the right end face of the left connecting cylinder. A limit module is also connected to one of the locking blocks.

3. A waterproof automotive wiring harness connector according to claim 2, characterized in that: The limiting module includes a countersunk hole, and the side wall of the connecting cylinder with the slot has a through countersunk hole. One of the locking blocks has a through locking hole corresponding to the countersunk hole. The corresponding countersunk hole and the locking hole are connected by a fastener through a thread.

4. A waterproof automotive wiring harness connector according to claim 1, characterized in that: The connecting unit includes a limiting strip. An annular groove is provided on the inner side of the protective cylinder near the connecting cylinder. Multiple limiting strips are evenly arranged circumferentially in the annular groove. The limiting strips are fixedly connected to the protective cylinder. A connecting ring is slidably connected to the multiple limiting strips. The connecting ring is threadedly connected to the outer wall of the connecting cylinder. A rubber ring for sealing is fixedly connected to the end face of the annular groove near the connecting cylinder.

5. A waterproof automotive wiring harness connector according to claim 1, characterized in that: The two perforated plates are symmetrically arranged inside the protective cylinder. Four through holes are evenly opened on the two perforated plates along the circumference. A wiring assembly is connected to the perforated plate near the connecting cylinder, and the perforated plate away from the connecting cylinder is connected to the protective cylinder by a compression spring.

6. A waterproof automotive wiring harness connector according to claim 5, characterized in that: The wiring assembly includes a mounting plate, which is connected to the inner wall of the connecting cylinder. Four copper tubes corresponding to the through holes and slidable left and right are connected to the mounting plate circumferentially. A guide core is slidably connected in the copper tube. The end of the guide core away from the through hole is set outside the copper tube and fixedly connected to a guide plate. The guide plate and the copper tube are fixedly connected by a compression spring. A telescopic module is connected to the end of the guide core near the through hole. A buckle module is provided on the corresponding guide plates in the two wiring assemblies.

7. A waterproof automotive wiring harness connector according to claim 6, characterized in that: The telescopic module includes a cylindrical groove. A cylindrical groove is opened inside the guide core. A slider is slidably connected to the cylindrical groove from left to right. A guide rod is fixedly connected to the end face of the slider away from the guide plate. The end of the guide rod away from the slider slides through the guide core and is fixedly connected to a guide block. The guide block is slidably connected in a copper tube. The guide block and the guide core are fixedly connected by an adjusting spring.

8. A waterproof automotive wiring harness connector according to claim 6, characterized in that: The buckle module includes a groove, the right end face of the left guide plate has a groove, and the left end face of the right guide plate has a protrusion that matches the groove.

9. A waterproof automotive wiring harness connector according to claim 1, characterized in that: The sealing unit includes a sealing ring, which is disposed at the end of the protective cylinder away from the connecting cylinder. The sealing cap is threadedly connected to the end of the protective cylinder away from the connecting cylinder, and the sealing ring abuts against the end of the protective cylinder away from the connecting cylinder through the sealing cap.

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