Modularized limiting hinge wire harness trajectory constraint structure for electric side sliding door

Abstract

The invention relates to the technical field of automobile electric side sliding doors, in particular to an electric side sliding door hinge wire harness trajectory constraint structure with modular limiting, which comprises an integrated arc-shaped trajectory constraint channel and a modular limiting structure integrated in the arc-shaped trajectory constraint channel, the trajectory constraint channel comprises an inlet narrowing type U-shaped groove, a middle inverted trapezoidal horizontal channel and an outlet guide arc; wherein the inlet narrowing type U-shaped groove, the middle inverted trapezoidal horizontal channel and the outlet guide arc are sequentially connected and integrated into a detachable arc-shaped channel, and the track restraining channel is integrally and fixedly installed on an installation position, corresponding to the motion track of an electric side sliding door hinge, of a vehicle body metal plate. According to the electric side sliding door hinge wire harness trajectory constraint structure, the matching relation between the wire harness protection layer and the corrugated pipe can be optimized, accurate trajectory constraint, multi-point flexible limiting and vehicle body end full-dimensional sealing protection of the wire harness are achieved through a single body, the structural suitability and assembly convenience are improved, and the service life of the wire harness is prolonged.

Description

Technical Field

[0001] This invention relates to the field of electric sliding doors for automobiles, and more specifically to a hinge harness trajectory constraint structure for an electric sliding door with modular limiting. Background Technology

[0002] Electric sliding doors are a core component of MPV passenger vehicles. The electrical signals and power transmission between the door and the vehicle body rely on wiring harnesses. These harnesses need to perform a reciprocating arc motion as the door opens and closes. The constraint and protection of the wiring harness trajectory at the hinges are crucial to ensuring the reliable and safe operation of electric sliding doors. Currently, electric sliding door hinge wiring harnesses are mostly arranged in an exposed or simple sheathed manner, lacking a dedicated integrated trajectory constraint and protection structure, resulting in several technical defects: Firstly, the wiring harness's movement trajectory lacks precise constraints, making it prone to direct friction with metal components such as body panels, slide rails, and hinges. This leads to wear and aging of the wiring harness's outer sheath, which in turn causes short circuits, open circuits, and other electrical faults, posing a serious driving safety hazard. Secondly, the wire harness protective layer and the outer corrugated tube are smooth surfaces that fit together. During the opening and closing of the door, the two are prone to relative sliding friction, which accelerates the wear of the protective layer and reduces the overall protective effect and service life of the wire harness. Third, the existing protective structure is assembled from scattered parts, and the sealing design is not perfect. Dust and moisture can easily enter through the gaps between the channel and the vehicle body and the wiring harness insertion openings, corroding the core wires inside the wiring harness. Fourth, traditional wire harness limiting is mostly a wall-mounted hard positioning design, which is prone to contact friction with the wire harness and cannot effectively prevent axial and radial movement. Frequent opening and closing of the door can easily cause the wire harness to be pulled, twisted, and deviated, further aggravating wire harness wear.

[0003] To address the aforementioned issues, while some simple wire harness protection or limiting structures have been proposed in the existing technology, they are all used in combination of independent components. They cannot achieve an integrated design that combines trajectory constraint, angle limitation, and sealing protection. They have a large number of parts, low integration, and are prone to gaps after assembly. They still cannot fundamentally solve the core problems of wire harness wear and movement. Furthermore, they do not consider the optimization of the fit between the wire harness protective layer and the corrugated pipe, which greatly reduces the protective effect. Summary of the Invention

[0004] The purpose of this invention is to provide a motorized sliding door hinge wiring harness trajectory constraint structure with modular limiting. This motorized sliding door hinge wiring harness trajectory constraint structure can optimize the matching relationship between the wiring harness protective layer and the bellows, and achieve precise trajectory constraint, multi-point flexible limiting and full-dimensional sealing protection of the wiring harness with a single main body, thereby improving structural adaptability and assembly convenience, and extending the service life of the wiring harness.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A motorized sliding door hinge harness trajectory constraint structure with modular limiting includes an integrated arc-shaped trajectory constraint channel and a modular limiting structure integrated inside the arc-shaped trajectory constraint channel. The trajectory constraint channel includes an inlet narrowing U-shaped groove, a middle inverted trapezoidal horizontal channel, and an outlet guide arc; wherein, the inlet narrowing U-shaped groove, the middle inverted trapezoidal horizontal channel, and the outlet guide arc are sequentially connected to form a detachable arc-shaped channel, and the trajectory constraint channel is fixedly installed on the body sheet metal at the mounting position corresponding to the movement trajectory of the electric sliding door hinge, and the trajectory constraint channel is arranged along the length direction of the reinforcing rib on the body sheet metal; The arc-shaped contour of the trajectory constraint channel fits the movement trajectory of the electric sliding door hinge, and the center of curvature of its arc-shaped contour corresponds to the rotation center of the electric sliding door hinge; one side of the trajectory constraint channel is attached and fixed to the inner side of the sliding door rail, and does not move synchronously with the electric sliding door; the wire harness body passes through the inside of the trajectory constraint channel, and is axially and radially limited by a modular limiting structure, so that the wire harness body and the inner wall of the trajectory constraint channel maintain no contact gap; At least one end of the trajectory constraint channel is provided with an elastic silicone sealing port for sealing the wire harness, which is used to seal the end of the channel for waterproofing and dustproofing, and to prevent moisture and impurities from entering the interior of the channel.

[0006] The trajectory constraint channel also includes an upper channel body and a lower channel body. The upper channel body is a flip-open cover structure. The upper channel body is engaged with the lower channel body through a buckle to realize the opening and closing of the upper channel body, which facilitates the laying, inspection and replacement of the wiring harness body. The bottom of the lower channel body is provided with a screw fixing structure, and the entrance of the trajectory constraint channel is also independently provided with a screw fixing structure. The trajectory constraint channel is detachably connected to the body sheet metal through the screw fixing structures at the bottom and the entrance.

[0007] The inner wall of the trajectory constraint channel is polished, and both ends of the trajectory constraint channel are provided with elastic silicone sealing ports that are flexibly and tightly fitted to the wire harness body to achieve channel sealing and slight radial positioning of the wire harness.

[0008] The modular limiting structure is a flexible locking positioning structure, which includes a locking seat and a flexible locking sleeve. The locking seat is integrally formed with the inner wall of the trajectory constraint channel. The flexible locking sleeve is embedded in the locking seat and is made of silicone material. The inner diameter of the flexible locking sleeve is adapted to the outer diameter of the wire harness body. The flexible locking positioning structure is arranged in at least three sets along the length of the trajectory constraint channel to achieve multi-point flexible limiting of the wire harness in the axial and radial directions.

[0009] The lower channel body is equipped with a buffer pad made of EPDM rubber at the screw connection with the body sheet metal to buffer body vibration; and sealing rings are provided at the contact parts of the trajectory constraint channel with the body sheet metal and the side sliding door rail to achieve full fit and seamless sealing.

[0010] The wire harness body is covered with a multi-layer integrated wire harness protective layer. The wire harness protective layer includes an insulation layer, a heat-resistant layer, a waterproof layer and a wear-resistant layer from the inside out. The insulation layer, heat-resistant layer, waterproof layer and wear-resistant layer are composite molded structures with no connecting gaps between the layers.

[0011] An outer corrugated tube is provided within the modular limiting structure, and the outer corrugated tube contacts the inner wall of the flexible locking sleeve; the exit guide arc segment of the trajectory constraint channel is a fixed-angle guide arc structure integrally formed with the channel body, which is used to guide the wire harness body to be drawn out smoothly, avoiding hard bending damage to the wire harness, and the guide arc structure is seamlessly connected with the outer corrugated tube.

[0012] The buckle is integrally formed with the trajectory constraint channel body, and the buckles are evenly distributed on the connecting edge of the upper channel body and the lower channel body to achieve anti-loosening and locking of the upper channel body and the lower channel body.

[0013] The outer side of the wear-resistant layer of the wire harness protective layer is provided with a connection structure that is adapted to the waveform of the outer corrugated tube, so as to realize the seamless connection between the wire harness body and the outer corrugated tube.

[0014] The beneficial effects of this invention are as follows: The overall structural design of the electric sliding door hinge harness trajectory constraint structure with modular limiting is scientific, and the installation, operation, and use are simple and convenient. Compared with the existing exposed or simple sheathed types, this invention has the following characteristics and advantages in practical use: 1. This invention achieves precise constraint on the movement trajectory of the wiring harness through an arc-shaped trajectory constraint channel, preventing the wiring harness from contacting and rubbing against surrounding metal parts during frequent opening and closing of the side sliding door. This reduces the risk of wear and aging of the wiring harness sheath from the source, reduces potential circuit failures, and improves driving safety. 2. This invention reduces the sliding friction between the wire harness protective layer and the corrugated pipe by combining a multi-layer integrated composite wire harness protective layer with an outlet guide arc structure, thereby improving the overall protection capability of the wire harness and effectively extending its service life. 3. This invention significantly improves structural sealing through a fully sealed structure design, effectively preventing dust, mud, water vapor from entering, avoiding corrosion of the core wire, and enabling the wire harness to maintain stable and reliable operation under complex working conditions; 4. This invention achieves non-damaging dual positioning of the wire harness through a modular flexible limiting structure, which can stably constrain the wire harness without generating hard contact friction. It can effectively prevent the wire harness from moving, twisting, deviating and pulling, further reduce wire harness loss and improve the overall operational stability of the sliding door. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall assembly structure of the present invention; Figure 2 This is a schematic diagram of the trajectory constraint channel structure in this invention; Figure 3 This is a schematic diagram of the trajectory constraint channel disassembly state structure of the present invention; Figure 4 This is a schematic diagram showing the cross-sectional position of the trajectory constraint channel of the present invention; Figure 5 This is a longitudinal sectional view of the horizontal segment AA in the middle of the trajectory constraint channel of the present invention; Figure 6 This is a transverse cross-sectional view of the horizontal segment BB plane in the middle of the trajectory constraint channel of the present invention; Figure 7 This is a schematic diagram of the modular limiting structure in this invention; The attached diagram is labeled as follows: 1-Body sheet metal, 2-Electric sliding door, 3-Trajectory constraint channel, 31-Narrowing U-shaped groove, 32-Inverted trapezoidal horizontal channel, 33-Guide arc, 321-Upper channel body, 322-Lower channel body, 4-Modular limiting structure, 41-Locking seat, 42-Flexible locking sleeve, 5-Elastic silicone sealing port, 6-Hinged structure, 7-Sealing ring, 8-Screw, 9-Snap-on, 10-Wire harness body, 11-Wire harness protective layer, 111-Insulation layer, 112-Heat resistant layer, 113-Waterproof layer, 114-Flexible protrusion layer, 115-Wear resistant layer, 12-Outer corrugated pipe, 13-Reinforcing rib. Detailed Implementation

[0016] Specific Embodiment 1: The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that: In the present invention, unless otherwise specified, all embodiments and preferred methods mentioned herein can be combined with each other to form new technical solutions. In the present invention, unless otherwise specified, all technical features and preferred features mentioned herein can be combined with each other to form new technical solutions. Unless otherwise specified, the professional and scientific terms used herein have the same meaning as those familiar with the art. Furthermore, any methods or materials similar to or equivalent to the content described herein can also be applied to the present invention.

[0017] As per the specification attached to this invention Figures 1 to 7As shown, this invention provides a modularly limited electric sliding door hinge harness trajectory constraint structure, which is mainly applicable to passenger vehicles, commercial vehicles, and new energy vehicles equipped with electric sliding doors. During installation, the invention is fixedly installed between the vehicle body sheet 1 and the electric sliding door 2, specifically arranged beside the sliding door rail and below the vehicle foot pedal area, and extends along the length of the original reinforcing rib 13 of the vehicle body sheet 1. It is used to achieve precise trajectory constraint, flexible limiting and fixing, multi-layer protection, and full-process sealing protection for the harness body 10 during the frequent opening and closing of the electric sliding door 2, fundamentally solving the technical problems of traditional electric sliding door harnesses being prone to wear, movement, pulling, and water and dust ingress.

[0018] In this embodiment, as per the appendix to the specification... Figure 2 As shown, the trajectory constraint channel 3 is an integral arc-shaped structure. Its arc contour is highly matched with the actual movement trajectory of the electric sliding door hinge, and the center of curvature corresponds to the center of hinge rotation. This ensures that the wiring harness body 10 always moves along a preset stable path during movement, avoiding direct contact, friction, and interference with surrounding metal structures such as the body sheet metal 1, sliding door rail, and hinge. The trajectory constraint channel 3 is divided into an entrance narrowing U-shaped groove 31, a middle inverted trapezoidal horizontal channel 32, and an exit guide arc 33 along its length. The three sections of the entrance narrowing U-shaped groove 31, the middle inverted trapezoidal horizontal channel 32, and the exit guide arc 33 are integrally injection molded, resulting in high overall structural strength, good sealing, and stable motion guidance. Meanwhile, it should be noted that the inlet narrowing U-shaped groove 31 adopts a tapered structure design to facilitate the smooth introduction of the wire harness body 10 into the channel, while reducing the probability of external impurities entering the channel; the middle inverted trapezoidal horizontal channel 32 is the main bearing and limiting area of ​​the channel body, with a stable inverted trapezoidal cross-section, possessing good structural rigidity and internal space utilization; the outlet guide arc 33 is a fixed curvature arc structure, which can smoothly guide the wire harness body 10 out, avoiding hard bends, stress concentration and fatigue damage at the outlet position.

[0019] As per the instruction manual Figure 3As shown, the central inverted trapezoidal horizontal channel 32 adopts an openable split structure, specifically divided into an upper channel body 321 and a lower channel body 322. The upper channel body 321 and the lower channel body 322 are rotatably connected on the same side by a hinge structure 6, and detachably fastened by a buckle 9 on the other side. An anti-loosening structure is added to the buckle 9 to ensure that the channel remains stable and closed under vehicle driving vibration conditions. The split hinge design allows for quick opening and closing of the channel, facilitating the installation, laying, subsequent inspection and replacement of the wiring harness body 10, and significantly improving assembly and maintenance efficiency. Screw fixing positions are provided at the bottom of the lower channel body 322 and at the entrance of the trajectory constraint channel 3. The entire trajectory constraint channel 3 is securely installed on the vehicle body sheet metal 1 by screws 8, ensuring a firm and reliable installation that is not prone to loosening or displacement. A sealing ring 7 is provided on the bottom end face of the lower channel body 322 that fits into the body sheet metal 1. The sealing ring 7 is arranged circumferentially along the bottom contour of the lower channel body 322. Under the locking action of the screw 8, the channel and the body sheet metal 1 are fully sealed, effectively preventing dust, mud, water vapor and moisture from entering the channel from the bottom gap and improving the overall sealing protection level.

[0020] As per the instruction manual Figure 4 Instruction manual attached Figure 6 As shown, multiple sets of modular limiting structures 4 are evenly distributed inside the trajectory constraint channel 3. These modular limiting structures 4 are evenly spaced along the length of the channel and are used to achieve dual flexible positioning of the wire harness body 10 in both the axial and radial directions. The modular limiting structure 4 includes a locking seat 41 integrally formed with the inner wall of the channel and a flexible locking sleeve 42 embedded and fixed inside the locking seat 41. The locking seat 41 is an integral protrusion structure on the inner wall of the channel, providing a stable mounting base for the flexible locking sleeve 42. The flexible locking sleeve 42 is made of elastic silicone material, and its inner diameter is adapted to the outer diameter of the wire harness body 10, allowing it to tightly wrap around the outer wall of the wire harness body 10 while maintaining flexible contact. The flexible locking sleeve 42 ensures a uniform, non-contact gap between the wire harness body 10 and the inner wall of the trajectory constraint channel 3, preventing direct friction between the wire harness body 10 and the inner wall of the channel during movement. It also effectively suppresses axial movement, radial displacement, twisting, and excessive pulling of the wire harness body 10 during the opening and closing of the door, significantly reducing wire harness wear and fatigue.

[0021] As per the instruction manual Figure 2 Instruction manual attached Figure 3As shown, elastic silicone sealing ports 5 are provided at both ends of the trajectory constraint channel 3. The elastic silicone sealing ports 5 adopt a flexible closing structure, which can flexibly and tightly fit with the outer wall of the wire harness body 10. This not only achieves waterproof and dustproof sealing of the channel ports, but also does not cause jamming or obstruction to the normal movement of the wire harness body 10. At the same time, it can provide auxiliary radial positioning for the wire harness body 10, further improving the stability of the wire harness movement. The elastic silicone sealing ports 5, together with the bottom sealing ring 7, form a complete sealing system of channel body sealing, end sealing, and mounting surface sealing, realizing all-dimensional protection of the wire harness body 10 at the vehicle body end.

[0022] As per the instruction manual Figure 6 As shown, the wire harness body 10 is covered with a multi-layer integrated composite protective layer 11. From the inside out, the protective layer 11 includes an insulation layer 111, a heat-resistant layer 112, a waterproof layer 113, a flexible protrusion layer 114, and a wear-resistant layer 115. These functional layers are tightly bonded together without any gaps, providing comprehensive protection with insulation, high-temperature resistance, waterproofing, and wear resistance. After the wire harness body 10 is led out from the trajectory constraint channel 3, its outermost wear-resistant layer 115 and the outer corrugated tube 12 are stably connected using a wave-shaped interlocking structure. This effectively prevents relative sliding friction between the protective layer 11 and the outer corrugated tube 12, reducing wear at the connection point and further improving the overall service life and operational reliability of the wire harness.

[0023] The working principle and process of the electric sliding door hinge harness trajectory constraint structure with modular limiting of the present invention are as follows: When the electric sliding door 2 of the vehicle is opened or closed, the door body drives the harness body 10 to move synchronously. Under the arc-shaped trajectory constraint of the trajectory constraint channel 3, the harness body 10 moves smoothly along a path that matches the hinge movement, without contact or friction with the body sheet metal 1, the sliding door rail, the hinge, or other structures throughout the process. The modular limiting structure 4 inside the channel continuously and flexibly clamps and positions the harness body 10, maintaining the stable posture of the harness and preventing it from shifting, twisting, or being pulled. The full-process sealing structure formed by the elastic silicone sealing port 5 and the sealing ring 7 continuously blocks external dust, mud, water, and moisture from entering the channel, protecting the harness body 10 and the internal core wires from corrosion and damage. Through the comprehensive design of precise trajectory constraint, flexible and non-damaging limiting, full-process sealing protection, and multi-layer composite protection, the present invention significantly improves the service life, working stability, and overall vehicle electrical system safety of the electric sliding door harness, and has high practical value and promising prospects for widespread application.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A trajectory constraint structure for a hinge harness of an electric sliding door with modular limiting, characterized in that, It includes an integrated arc-shaped trajectory constraint channel (3) and a modular limiting structure (4) integrated inside the arc-shaped trajectory constraint channel (3); The trajectory constraint channel (3) includes an entrance narrowing U-shaped groove (31), a middle inverted trapezoidal horizontal channel (32), and an exit guide arc (33); wherein, the entrance narrowing U-shaped groove (31), the middle inverted trapezoidal horizontal channel (32), and the exit guide arc (33) are sequentially connected to form a detachable arc channel, and the trajectory constraint channel (3) is fixedly installed on the body sheet metal (1) at the mounting position corresponding to the hinge movement trajectory of the electric side sliding door (2), and the trajectory constraint channel (3) is arranged along the length direction of the reinforcing rib (13) on the body sheet metal (1); The arc-shaped contour of the trajectory constraint channel (3) is in contact with the movement trajectory of the hinge of the electric sliding door (2), and the curvature center of its arc-shaped contour is set corresponding to the rotation center of the hinge of the electric sliding door (2); one side of the trajectory constraint channel (3) is attached and fixed to the inner side of the sliding door rail, and does not move synchronously with the electric sliding door (2); the wire harness body (10) passes through the inside of the trajectory constraint channel (3), and is axially and radially limited by the modular limiting structure (4), so that the wire harness body (10) and the inner wall of the trajectory constraint channel (3) maintain no contact gap; At least one end of the trajectory constraint channel (3) is provided with an elastic silicone sealing port (5) for sealing the wire harness, which is used to seal the end of the channel for waterproofing and dustproofing, and to prevent water vapor and impurities from entering the channel.

2. The electric sliding door hinge harness trajectory constraint structure with modular limiting as described in claim 1, characterized in that, The trajectory constraint channel (3) also includes an upper channel body (321) and a lower channel body (322). The upper channel body (321) is a flip-open cover structure. The upper channel body (321) is engaged with the lower channel body (322) through a buckle (9) to realize the opening and closing of the upper channel body (321), which facilitates the laying, maintenance and replacement of the wire harness body (10). The bottom of the lower channel body (322) is provided with a screw (8) fixing structure. The entrance of the trajectory constraint channel (3) is also independently provided with a screw (8) fixing structure. The trajectory constraint channel (3) is detachably connected to the body sheet metal (1) through the screw (8) fixing structures at the bottom and entrance.

3. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 1, characterized in that, The inner wall of the trajectory constraint channel (3) is polished, and both ends of the trajectory constraint channel (3) are provided with elastic silicone sealing ports (5) that are flexibly and tightly fitted to the wire harness body (10) to achieve channel sealing and slight radial positioning of the wire harness.

4. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 2, characterized in that, The modular limiting structure (4) is a flexible locking positioning structure, which includes a locking seat (41) and a flexible locking sleeve (42). The locking seat (41) is integrally formed with the inner wall of the trajectory constraint channel (3). The flexible locking sleeve (42) is embedded in the locking seat (41) and is made of silicone material. The inner diameter of the flexible locking sleeve (42) is adapted to the outer diameter of the wire harness body (10). The flexible locking positioning structure is arranged in at least three sets along its length in the trajectory constraint channel (3) to achieve multi-point flexible limiting of the wire harness in the axial and radial directions.

5. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 4, characterized in that, The lower channel body (322) is provided with a buffer pad made of EPDM rubber at the connection between the screw (8) on the body sheet metal (1) to buffer the vibration of the body; and a sealing ring (7) is provided at the fitting part of the trajectory constraint channel (3) with the body sheet metal (1) and the side sliding door rail to achieve full fitting and seamless sealing.

6. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 1, characterized in that, The wire harness body (10) is covered with a multi-layer integrated wire harness protective layer (11). The wire harness protective layer (11) includes an insulation layer (111), a heat-resistant layer (112), a waterproof layer (113), and a wear-resistant layer (115) from the inside to the outside. The insulation layer (111), the heat-resistant layer (112), the waterproof layer (113), and the wear-resistant layer (115) are composite molded structures with no gaps between the layers.

7. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 6, characterized in that, An outer corrugated tube (12) is provided inside the modular limiting structure (4), and the outer corrugated tube (12) is in contact with the inner wall of the flexible locking sleeve (42); the exit guide arc (33) segment of the trajectory constraint channel (3) is a fixed angle guide arc structure integrally formed with the channel body, which is used to guide the wire harness body (10) to be smoothly led out, avoiding hard bending damage to the wire harness, and the guide arc (33) structure is seamlessly connected with the outer corrugated tube (12).

8. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 1, characterized in that, The buckle (9) is integrally formed with the trajectory constraint channel (3) body, and the buckle (9) is evenly distributed on the connecting edge of the upper channel body (321) and the lower channel body (322) to achieve the anti-loosening and locking of the upper channel body (321) and the lower channel body (322).

9. The electric sliding door hinge harness trajectory constraint structure with modular limiting according to claim 7, characterized in that, The wear-resistant layer (115) of the wire harness protective layer (11) is provided with a connection structure on the outside that is adapted to the waveform of the outer corrugated pipe (12), so as to realize the seamless connection between the wire harness body (10) and the outer corrugated pipe (12).

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