A waterproof sealing structure of a vehicle wiring harness housing

Abstract

The application discloses a kind of waterproof sealing structure of vehicle wiring harness shell, belong to wiring harness sealing technical field, including cylinder, multiple outlet slots are arranged in the circumferential array on the lateral wall of cylinder;One end of cylinder is slidably connected with sliding plate by spring;The inside of multiple outlet slots is provided with wire sleeve, and the both ends of wire sleeve are fixed on cylinder and sliding plate respectively, and the wire in wiring harness shell is led out from wire sleeve to outside, and multiple inner recesses are provided on wire sleeve;The sealing of wire sleeve is realized to the wire led out from wiring harness shell in the present application.In natural state, the inner diameter of wire sleeve is greater than the outer diameter of wire, while the inner diameter of inner recess provided on wire sleeve is less than the outer diameter of wire, and under the elastic pressure of spring, sliding plate slides away from cylinder and stretches wire sleeve, so that the inner diameter of inner recess is increased, which is convenient for wire to be inserted;After wire is inserted, sliding plate is slidably attached to the end of cylinder, inner recess is deformed and reset and is tightly attached to the lateral wall of wire, so as to effectively prevent moisture penetration and ensure the waterproof performance of wiring harness shell.

Description

Technical Field

[0001] This invention relates to a waterproof sealing structure for vehicle wiring harness housings, belonging to the field of wiring harness sealing technology. Background Technology

[0002] The design feature of wiring harness housing leads needing to penetrate the housing's outlet holes presents a challenge for sealing. Traditional sealing rings are ineffective due to the difficulty in filling the gaps between the wires, leading to the frequent use of potting compounds as an alternative. While potting compounds effectively isolate moisture and dust, they also make disassembling the wiring harness housing leads extremely difficult, undoubtedly increasing the complexity of later maintenance. To address these issues, a waterproof sealing structure for vehicle wiring harness housings is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a waterproof sealing structure for vehicle wiring harness housings to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof sealing structure for a vehicle wiring harness housing, comprising: The column is installed in the opening of the wire harness housing for leading out the wires, and the side wall of the column has multiple wire outlet slots arranged in a circumferential array. A sliding plate is slidably connected to one end of the column via a spring. Multiple flexible wire sleeves are arranged one-to-one inside multiple wire outlet slots. The two ends of the wire sleeves are fixed to the column and the sliding plate respectively. The wires inside the wire harness housing are led out from the wire sleeves to the outside. The wire sleeves are provided with multiple recesses. The sliding plate has a pressing frame at the end away from the column, and a pull rod is fixedly connected to the middle of the pressing frame. The pull rod passes through the sliding plate and extends into the interior of the column. A screw is provided at the end of the column away from the sliding plate. The threaded end of the screw passes through the side wall of the column and is engaged with the interior of the pull rod.

[0005] Preferably, it further includes a clamping assembly, the clamping assembly comprising: Multiple clamping blocks are slidably connected to the inside of multiple cable outlet slots, one-to-one correspondence; The sleeve is slidably fitted onto the column, and the sleeve is fixedly connected to the pressing frame; Each clamping block has multiple grooves on its side wall, and each groove has an inclined wall on one side. The inner wall of the sleeve has multiple rollers. As the roller rolls out of the groove along the inclined wall, the roller presses against the clamping block and slides. As the roller rolls along the inclined wall into the interior of the groove, the roller eliminates the pressure on the clamping block.

[0006] Preferably, a first clamping plate is fixedly connected to the end of the column away from the sliding plate, and a second clamping plate is fixedly connected to the end of the sleeve away from the pressing frame. The first clamping plate and the second clamping plate are clamped on the opening contour of the wire harness housing.

[0007] Preferably, the middle of each cable outlet groove bends towards the center of the column.

[0008] Preferably, the inner wall of the cable outlet groove and the side wall of the clamping block are evenly distributed with a plurality of protrusions corresponding to the concave portion; When the clamping block secures the wire sleeve in the wire outlet groove, multiple protrusions press against the outer wall of the corresponding concave part.

[0009] Preferably, a metal ring is provided on the inner wall of the sleeve and on both sides of each recess.

[0010] Preferably, multiple extrusion sections corresponding to the metal ring are evenly distributed on the inner wall of the cable outlet groove and the side wall of the clamping block.

[0011] Preferably, both ends of the sleeve are provided with fixing rings, one fixing ring is fixed to the side wall of the column, and the other fixing ring is fixed to the side wall of the sliding plate. The column and the sliding plate are fixedly connected with pressure plates for pressing and securing the fixing rings.

[0012] Compared with existing technologies: 1. This invention achieves a waterproof seal for the lead wires extending from the wire harness housing using a wire sleeve. In its natural state, the inner diameter of the wire sleeve is larger than the outer diameter of the wire, while the inner diameter of the recessed portion on the wire sleeve is smaller than the outer diameter of the wire. Under the spring pressure, the sliding plate slides away from the column, tensioning the wire sleeve and increasing the inner diameter of the recessed portion, facilitating wire insertion. After the wire is inserted, the sliding plate slides against the end of the column, and the recessed portion deforms and returns to its original position, tightly fitting against the sidewall of the wire, effectively preventing moisture penetration and ensuring the waterproof performance of the wire harness housing. Furthermore, this structure incorporates a linkage mechanism between a lead screw and a pull rod, making the sliding of the sliding plate and the deformation and return of the wire sleeve easy to operate and control. Users only need to simply rotate the lead screw to achieve the sliding of the sliding plate and the tight seal of the wire sleeve, greatly simplifying the installation process and improving work efficiency.

[0013] 2. This invention improves the structural stability and sealing performance by adding a clamping component. The clamping component, through the cooperation of the clamping block and the sleeve, achieves a stable clamping of the wire sleeve within the outlet groove, ensuring the reliability of the wire seal. When the spring-loaded sliding plate moves away from the column, the clamping block automatically releases its clamping action under the action of the sleeve's rollers, facilitating easy wire insertion. When the sliding plate is pushed towards the column, the rollers roll along the inclined wall and press against the clamping block, tightly clamping the wire sleeve within the outlet groove, effectively preventing wire loosening and moisture penetration.

[0014] 3. This invention features a cable outlet groove that bends towards the center of the column, with protrusions corresponding to the concave portion on the inner wall of the cable outlet groove and the side wall of the clamping block. When the clamping block secures the cable sleeve, these protrusions form a ring that tightly abuts against the outer wall of the concave portion, enhancing the sealing effect. Simultaneously, the metal ring added to the inner wall of the cable sleeve not only ensures a uniform change in the inner diameter of the concave portion when the cable sleeve is stretched, but also enhances the structural strength of the cable sleeve. Furthermore, the cooperation between the compression portion on the inner wall of the cable outlet groove and the side wall of the clamping block and the metal ring allows the cable sleeve to deform to both sides when compressed, further promoting a tighter fit between the concave portion and the outer wall of the conductor, achieving a more robust seal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the present invention.

[0017] Figure 3 This is an exploded view of the column, sleeve, and lead screw of the present invention.

[0018] Figure 4 This is a cross-sectional view of the entire invention (with the sliding plate separated from the column).

[0019] Figure 5 This is a cross-sectional view of the entire invention (with the sliding plate and the column in abutting position).

[0020] Figure 6 This is an exploded view of the column, clamping block, and sleeve of the present invention.

[0021] Figure 7 This is an exploded view of the column, sliding plate, and pressure plate of the present invention.

[0022] Figure 8 This is a cross-sectional view of the thread sleeve of the present invention.

[0023] Figure 9 This is a cross-sectional view of the cable outlet groove, cable sleeve, and clamping block of the present invention.

[0024] Figure 10 For the present invention Figure 9 Enlarged view of point A.

[0025] In the picture: 1. Column body; 101. Cable outlet groove; 2. Sliding plate; 3. Spring; 4. Wire sleeve; 401. Recessed portion; 402. Metal ring; 403. Fixing ring; 5. Pressing frame; 6. Pull rod; 7. Screw; 8. Pressure plate; 9. Clamping components; 901, clamping block; 902, sleeve; 903, groove; 904, inclined wall; 905, roller; 10. Protrusion; 11. Extrusion section; 12. First clamping plate; 13. Second clamping plate. Detailed Implementation

[0026] The present invention is illustrated below with specific embodiments, but these are not intended to limit the invention.

[0027] Example 1 like Figures 1-10 As shown, in this embodiment, a waterproof sealing structure for a vehicle wiring harness housing is provided, including a column 1. The column 1 is installed in the opening of the wiring harness housing for leading out wires. Multiple wire outlet slots 101 are arranged circumferentially on the side wall of the column 1. One end of the column 1 is slidably connected to a sliding plate 2 via a spring 3. Figure 4 and Figure 5 As shown, the interior of the column 1 has an inner cavity, and the spring 3 is disposed in the inner cavity. One end of the spring 3 abuts against the side wall of the column 1, and the other end of the spring 3 abuts against the side wall of the sliding plate 2. When the sliding plate 2 abuts against the side wall of the column 1 (as shown), Figure 5 As shown), the spring 3 is in a compressed state; each wire outlet groove 101 is provided with an elastic wire sleeve 4 inside, the two ends of the wire sleeve 4 are fixed on the column 1 and the sliding plate 2 respectively, the wire inside the wire harness shell is led out from the wire sleeve 4 to the outside, and the wire sleeve 4 is provided with multiple recesses 401. The sliding plate 2 is provided with a pressing frame 5 at the end away from the column 1. A pull rod 6 is fixedly connected to the middle of the pressing frame 5. The pull rod 6 passes through the sliding plate 2 and extends into the interior of the column 1. The end of the pull rod 6 inserted into the column 1 has an internal thread blind hole. The end of the column 1 away from the sliding plate 2 is provided with a screw 7. The threaded end of the screw 7 passes through the side wall of the column 1 and is engaged with the interior of the pull rod 6.

[0028] Under normal conditions, the inner diameter of the sleeve 4 is larger than the outer diameter of the conductor, and the inner diameter of the recess 401 is smaller than the outer diameter of the conductor. like Figure 4 As shown, when the lead screw 7 is rotated and pushed out of the blind hole of the internal thread of the pull rod 6, the sliding plate 2 slides away from the column 1 under the spring pressure of the spring 3. The wire sleeve 4 located in the wire outlet groove 101 is pulled because its two ends are fixed on the column 1 and the sliding plate 2 respectively. At this time, the concave part 401 is deformed and expanded outward under force, and its inner diameter becomes larger. In this state, it is convenient to insert the wire into the inside of the wire sleeve 4. After each wire is inserted into its corresponding sleeve 4, the screw 7 is turned, and the threaded end of the screw 7 is screwed into the blind hole of the internal thread of the pull rod 6. At this time, the pull rod 6 will pull the pressing frame 5 toward the column 1, and then the pressing frame 5 will press the sliding plate 2, causing the sliding plate 2 to compress the spring 3 and slide toward the column 1. Finally, the sliding plate 2 abuts against the end of the column 1. During this process, the sleeve 4 deforms and returns to its original position, and the inner wall of the concave part 401 abuts against the side wall of the wire, thus sealing the wire.

[0029] like Figure 7 As shown, in order to fix the two ends of the wire sleeve 4 to the column 1 and the sliding plate 2 respectively, a fixing ring 403 is provided at both ends of the wire sleeve 4. The fixing ring 403 is integrally formed with the wire sleeve 4. One fixing ring 403 is fixed to the side wall of the column 1, and the other fixing ring 403 is fixed to the side wall of the sliding plate 2. A pressure plate 8 for pressing and fixing the fixing ring 403 is fixedly connected to the column 1 and the sliding plate 2. like Figure 7 As shown, through holes are provided on the column 1, the sliding plate 2 and the two pressure plates 8. The through holes correspond one-to-one with the wire sleeve 4, and the diameter of the through hole is the same as the outer diameter of the wire sleeve 4. When installing the wire sleeve 4, the wire sleeve 4 is placed into the wire outlet groove 101, and its two ends are respectively passed into the through holes of the column 1 and the sliding plate 2. Then, the two pressure plates 8 are fixed to the column 1 and the sliding plate 2 respectively with bolts. The pressure plates 8 press the fixing ring 403 to fix the end of the wire sleeve 4 to the column 1 and the sliding plate 2. In addition, the two pressure plates 8 have a central hole in the center so that the pull rod 6 and the lead screw 7 can be inserted into the interior of the column 1.

[0030] Example 2 like Figures 3-6 As shown, based on Embodiment 1, this embodiment further includes a clamping assembly 9, which includes multiple clamping blocks 901, which are slidably connected to the interior of multiple cable outlet slots 101 in a one-to-one correspondence; a sleeve 902 is slidably sleeved on the column 1, and the sleeve 902 is fixedly connected to the pressing frame 5; wherein, multiple grooves 903 are provided on the side wall of each clamping block 901, and an inclined wall 904 is provided on one side of each groove 903; multiple rollers 905 are provided on the inner wall of the sleeve 902; The process by which clamping block 901 presses the wire sleeve 4 into the wire outlet groove 101 is as follows: like Figure 4 and Figure 5 As shown, when the spring 3 presses the sliding plate 2 away from the column 1, the pressing frame 5 will pull the sleeve 902 to slide, causing the roller 905 to slide into the groove 903. At this time, the clamping block 901 does not clamp the wire sleeve 4. At this time, the wire sleeve 4 is pulled axially by the sliding plate 2, which facilitates the insertion of the wire. After the wire is inserted, the pressing frame 5 pushes the sliding plate 2 toward the column 1 by the cooperation of the lead screw 7 and the pull rod 6. At the same time, the pressing frame 5 drives the sleeve 902 to slide, causing the roller 905 to roll out of the groove 903 along the inclined wall 904. In this way, the roller 905 presses against the clamping block 901, causing the clamping block 901 to clamp the wire sleeve 4 in the wire outlet groove 101, ensuring the stability of the wire sleeve 4 connected to the wire.

[0031] The end of the column 1 away from the sliding plate 2 is fixedly connected to the first clamping plate 12, and the end of the sleeve 902 away from the pressing frame 5 is fixedly connected to the second clamping plate 13. The first clamping plate 12 and the second clamping plate 13 are clamped on the opening contour of the wire harness housing. The openings on the wire harness housing are adapted to this device. During installation, the column 1 is installed inside the opening, the first clamping plate 12 is located outside the opening, and the second clamping plate 13 is located inside the opening. When the sliding plate 2 slides toward the column 1, the sleeve 902 moves the second clamping plate 13 toward the first clamping plate 12, thereby fixing the wire sleeve 4 in the wire outlet groove 101, and also clamping the first clamping plate 12 and the second clamping plate 13 on the opening contour of the wire harness housing, thus completing the fixation of the column 1.

[0032] In addition, a sealing gasket is provided on one side of the wire harness housing opening contour where the first clamping plate 12 and the second clamping plate 13 clamp to improve the sealing performance.

[0033] Example 3 like Figures 4-10 As shown, based on Embodiment 2, in order to ensure the stability of the sealing wire in the concave portion 401, the middle part of each outlet groove 101 is bent towards the center of the column 1. Multiple protrusions 10 corresponding to the concave portion 401 are evenly distributed on the inner wall of the outlet groove 101 and the side wall of the clamping block 901. The protrusions 10 on the outlet groove 101 correspond one-to-one with the protrusions 10 on the clamping block 901. When the clamping block 901 slides into the outlet groove 101, the protrusions 10 on the outlet groove 101 and the corresponding protrusions 10 on the clamping block 901 form a ring. When the clamping block 901 clamps the wire sleeve 4 into the wire outlet groove 101, the multiple protrusions 10 abut against the outer wall of the corresponding concave part 401.

[0034] Metal rings 402 are provided on the inner wall of the sleeve 4 and on both sides of each concave portion 401. The inner diameter of the metal rings 402 is the same as the inner diameter of the sleeve 4. When the sleeve 4 is stretched, the metal rings 402 are used to ensure that the inner diameter of the concave portion 401 increases uniformly during the stretching of the sleeve 4, while also enhancing the structural strength of the sleeve 4.

[0035] like Figures 9-10As shown, multiple pressing parts 11, corresponding to the metal ring 402, are evenly distributed on the inner wall of the cable outlet groove 101 and the side wall of the clamping block 901. When the clamping block 901 clamps the cable sleeve 4 in the cable outlet groove 101, the pressing parts 11 press against the outer wall of the cable sleeve 4. The pressing position of the pressing parts 11 is supported by the metal ring 402. In this way, with the cooperation of the pressing parts 11 and the metal ring 402, the cable sleeve 4 at the pressing position deforms to both sides (e.g., Figure 10 As indicated by the arrow, the metal ring 402 deforms towards the concave portions 401 on both sides, making the concave portions 401 more firmly seal the outer wall of the wire.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A waterproof sealing structure for a vehicle wiring harness housing, characterized in that, include: The column (1) is installed in the opening of the wire harness housing for leading out wires, and the side wall of the column (1) has a plurality of wire outlet slots (101) arranged circumferentially. A sliding plate (2) is slidably connected to one end of a column (1) by a spring (3); Multiple elastic wire sleeves (4) are respectively arranged inside multiple wire outlet slots (101). The two ends of the wire sleeves (4) are respectively fixed on the column (1) and the sliding plate (2). The wires inside the wire harness shell are led out from the wire sleeves (4) to the outside. Multiple recesses (401) are provided on the wire sleeves (4). The sliding plate (2) is provided with a pressing frame (5) at one end away from the column (1). A pull rod (6) is fixedly connected to the middle of the pressing frame (5). The pull rod (6) passes through the sliding plate (2) and extends into the interior of the column (1). A screw rod (7) is provided at one end of the column (1) away from the sliding plate (2). The threaded end of the screw rod (7) passes through the side wall of the column (1) and is engaged with the interior of the pull rod (6).

2. The waterproof sealing structure for a vehicle wiring harness housing according to claim 1, characterized in that, It also includes a clamping assembly (9), which includes: Multiple clamping blocks (901) are slidably connected to the inside of multiple cable outlet slots (101) in a one-to-one correspondence; Sleeve (902), which is slidably sleeved on column (1), and sleeve (902) is fixedly connected to pressing frame (5); Each clamping block (901) has multiple grooves (903) on its side wall, and each groove (903) has an inclined wall (904) on one side. The sleeve (902) has multiple rollers (905) on its inner wall. As the roller (905) rolls out of the groove (903) along the inclined wall (904), the roller (905) presses against the clamping block (901) and slides. When the roller (905) rolls along the inclined wall (904) into the interior of the groove (903), the roller (905) eliminates the pressure on the clamping block (901).

3. The waterproof sealing structure for a vehicle wiring harness housing according to claim 2, characterized in that, The first clamping plate (12) is fixedly connected to the end of the column (1) away from the sliding plate (2), and the second clamping plate (13) is fixedly connected to the end of the sleeve (902) away from the pressing frame (5). The first clamping plate (12) and the second clamping plate (13) are clamped on the opening contour of the wire harness housing.

4. The waterproof sealing structure for a vehicle wiring harness housing according to claim 2, characterized in that, The middle of each cable outlet groove (101) bends toward the center of the column (1).

5. The waterproof sealing structure for a vehicle wiring harness housing according to claim 4, characterized in that, The inner wall of the cable outlet groove (101) and the side wall of the clamping block (901) are evenly distributed with a plurality of protrusions (10) corresponding to the concave part (401). When the clamping block (901) clamps the wire sleeve (4) in the wire outlet groove (101), multiple protrusions (10) abut against the outer wall of the corresponding concave part (401).

6. The waterproof sealing structure for a vehicle wiring harness housing according to claim 5, characterized in that, Metal rings (402) are provided on the inner wall of the sleeve (4) and on both sides of each recess (401).

7. A waterproof sealing structure for a vehicle wiring harness housing according to claim 6, characterized in that, The inner wall of the outlet groove (101) and the side wall of the clamping block (901) are evenly distributed with multiple extrusion parts (11) corresponding to the metal ring (402).

8. The waterproof sealing structure for a vehicle wiring harness housing according to claim 1, characterized in that, Both ends of the sleeve (4) are provided with fixing rings (403). One fixing ring (403) is fixed on the side wall of the column (1), and the other fixing ring (403) is fixed on the side wall of the sliding plate (2). The column (1) and the sliding plate (2) are fixedly connected with pressure plates (8) for pressing the fixing rings (403).

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