Automobile sealed wire harness
By designing an automotive sealed wire harness sealing joint that uses outer seals and multiple semi-ring structures, the problem of long installation time of existing sealing joints is solved, rapid fixation and good sealing effect are achieved, and wiring efficiency is improved.
Patent Information
- Application Number
- CN202421745910.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing automobile sealing joints are mainly two-piece structures. When installed, they need to be placed outside the split position and fixed one by one with multiple screws, resulting in a long operating time and affecting the wiring time.
A sealing joint for an automobile sealed wire harness is designed, and the outer sealing member is composed of an upper sealing shell and a lower sealing shell. It combines the side fixing half ring, the limit fixing half ring and the outer fixing half ring. Quick fixing is achieved through the advancement of the outer locking sleeve, reducing the steps of screw locking.
The installation process of sealed joints is simplified, operating time is reduced, wiring efficiency is improved, and a good sealing effect is provided to prevent solid particles from entering.
Smart Images
Figure CN222839405U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wire harnesses, in particular to a sealed wire harness for an automobile. Background Art
[0002] The automotive wiring harness is the main network of the automotive circuit. Without the wiring harness, there would be no automotive circuit. The wiring harness is a component that is formed by crimping, then plasticizing or adding a metal shell, etc., to form a wiring harness to connect the circuit. The vehicle body wiring harness connects the entire vehicle body. The wiring harness industry chain includes wires and cables, connectors, processing equipment, wiring harness manufacturing and downstream application industries. The wiring harness is widely used.
[0003] Automotive wires are also called low-voltage wires. They are different from ordinary household wires. Ordinary household wires are single-core copper wires with a certain hardness. Automotive wires are multi-core copper soft wires, some of which are as thin as hair. Several or even dozens of soft copper wires are wrapped in plastic insulation tubes (polyvinyl chloride), which are soft and not easy to break.
[0004] Multiple automotive wires are wrapped in plastic insulating tubes and routed inside the automotive sheet metal. When the automotive wiring harness reaches the door position, the automotive wiring harness needs to be branched out from the plastic insulating tube so that it can be connected to the target electrical components for power supply or control of the target components. Sealed joints are used to guide the branching positions so that the branching positions are wrapped and sealed to prevent the wires at this position from being pulled and disordered, and to prevent solid particle impurities from entering the plastic insulating tube to affect the properties of the wires themselves.
[0005] Currently, sealing joints are mainly of two-piece structure. During installation, they are placed outside the branch line position and fixed one by one with multiple screws to complete the installation of the sealing joints. The operation time is long, which affects the wiring time. Utility Model Content
[0006] The utility model aims to provide a sealed wiring harness for automobiles, so as to solve the problem in the above-mentioned background technology that the current sealed joint is mainly a two-piece structure, which is placed outside the branch line position during installation and is fixed one by one with multiple screws to complete the installation of the sealed joint, which takes a long time to operate and affects the wiring time.
[0007] To achieve the above object, the utility model provides the following technical solutions: an automotive sealed wiring harness, comprising a main harness, branch wires and a sealed joint, wherein the main harness and branch wires are located on both sides of the sealed joint, and the main harness and branch wires are branched in the sealed joint;
[0008] The sealing joint includes an outer seal, which is composed of an upper sealing shell and a lower sealing shell. A hollow cavity is formed inside the upper sealing shell and the lower sealing shell. Side fixing half rings are fixed in the middle of both sides of the upper sealing shell and the lower sealing shell. A limiting fixing half ring is fixed on the outer side of the side fixing half ring. An outer fixing half ring is fixed on the outer side of the limiting fixing half ring. An outer locking sleeve is arranged on the outer side of the two upper and lower outer fixing half rings on each side. The outer diameter of the outer fixing half ring is smaller than the inner diameter of the outer locking sleeve.
[0009] Preferably, a rectangular groove is provided at the inner end in the middle of the rear end surface of the upper sealing shell, and a protruding strip is integrally connected to the rear end of the lower sealing shell and matches the rectangular groove. The protruding strip is located in the rectangular groove and is rotatably connected to the upper sealing shell through an axis.
[0010] Preferably, connecting spring sheets are fixed on both sides of the middle of the outer side of the outer fixing half ring, the connecting spring sheets are arranged obliquely, and an intermediate spring sheet is integrally connected between each group of two connecting spring sheets.
[0011] Preferably, a through rectangular groove is formed on the outer locking sleeve at a position corresponding to the middle spring piece, and the length of the through rectangular groove is greater than the length of the middle spring piece.
[0012] Preferably, semi-cylindrical bars are hot-melt-fixed on the inner surfaces of the side fixing semi-ring, the limit fixing semi-ring and the outer fixing semi-ring, and the semi-cylindrical bars are arranged in a circular array on the inner surfaces of the side fixing semi-ring, the limit fixing semi-ring and the outer fixing semi-ring. The diameter of the semi-cylindrical bars located outside the bus bundle is smaller than the diameter of the semi-cylindrical bars located outside the branch wires. A cable cavity is formed between the upper and lower groups of the side fixing semi-ring, the limit fixing semi-ring and the outer fixing semi-ring on each side, and the cable cavity is connected to the hollow cavity. The bus bundle and the branch wires are respectively stuck in the two cable cavities.
[0013] Preferably, a front extension plate is fixed in the middle of the inner ends of the front ends of the upper sealing shell and the lower sealing shell, and the two front extension plates are fixed by fixing bolts.
[0014] Preferably, anti-slip patches are fixed by hot-melt at the front and rear ends of the exterior of the outer locking sleeve, and the outer surface of the anti-slip patch is provided with anti-slip patterns.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. In the utility model, the outer seal on the sealing joint is divided into an upper sealing shell and a lower sealing shell, and the outer side is connected with a side fixing half ring, a limit fixing half ring and an outer fixing half ring, which are also arranged in an upper and lower structure; when in use, the outer locking sleeve is pushed inward in the direction of the outer fixing half ring, and the outer locking sleeve is pushed inward to fix the position of each group of two outer fixing half rings. The operation method is relatively simple during installation and fixing, and it is not necessary to tighten the screws one by one, which solves the problem that the current sealing joint is mainly a two-piece structure, which is placed outside the branch line position during installation, and is fixed one by one with multiple screws to complete the installation of the sealing joint, which takes a long time to operate and affects the wiring time; and the wiring harness is placed in the upper sealing shell and the lower sealing shell through the outer locking sleeve on one side. The placement method is simple.
[0017] 2. In the utility model, when the outer locking sleeve is pushed inward along the two outer fixing semi-rings and the connecting spring piece, the middle spring piece corresponds to the position of the through rectangular groove and resets and is stuck in the through rectangular groove. At this time, the outer locking sleeve exerts pressure on the middle spring piece and the connecting spring piece, and the pressure is transmitted to the position of the semi-cylindrical strip through the outer fixing semi-ring. The semi-cylindrical strip squeezes the cable in the cable cavity to create a sealed environment in the outer seal. This structure provides a sealing effect, so that no solid particles or impurities enter the branch line position, and the sealing work is completed in cooperation.
[0018] 3. In the utility model, the upper sealing shell is opened, and the branching position of the automobile wiring harness is placed between the upper sealing shell and the lower sealing shell of the outer sealing component; the upper sealing shell is rotated downward to drive the upper sealing shell and the lower sealing shell to form a whole again, and the upper sealing shell and the lower sealing shell are simply fixed by fixing bolts; when a fixing bolt is used here to complete the connection and fixation of the upper sealing shell and the lower sealing shell, the temporary fixing force on the upper sealing shell and the lower sealing shell during the advancement process of the outer locking sleeve can be reduced, so that the two outer fixing half rings can be directly fitted, which is convenient for the advancement of the outer locking sleeve, improves the convenience of use, and does not cause the above-mentioned problem of fixing the bolts one by one and wasting installation time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a forward structural explosion diagram of a sealing joint of a sealed wiring harness for an automobile according to the utility model;
[0020] Figure 2 It is a reverse structural exploded diagram of a sealed connector of a sealed wiring harness for an automobile according to the utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the A position of a sealed wiring harness for an automobile of the utility model;
[0022] Figure 4 This is a front view of a sealed automotive wiring harness of the utility model.
[0023] In the figure: 1. bus harness; 2. branch wires; 3. sealing joint; 4. outer seal; 5. upper sealing shell; 6. lower sealing shell; 7. front extension plate; 8. fixing bolt; 9. rectangular groove; 10. protruding strip; 11. side fixing semi-ring; 12. limit fixing semi-ring; 13. outer fixing semi-ring; 14. semi-cylindrical strip; 15. cable cavity; 16. middle spring piece; 17. connecting spring piece; 18. outer locking sleeve; 19. through rectangular groove; 20. anti-slip patch. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0025] See also Figure 1-4 The utility model provides an embodiment: a sealed wiring harness for automobile, comprising a main harness 1, branch wires 2 and a sealing joint 3, wherein the main harness 1 and the branch wires 2 are located on both sides of the sealing joint 3, and the main harness 1 and the branch wires 2 are branched in the sealing joint 3;
[0026] The sealing joint 3 includes an outer seal 4, which is composed of an upper sealing shell 5 and a lower sealing shell 6. A hollow cavity is formed inside the upper sealing shell 5 and the lower sealing shell 6. A side fixing half ring 11 is fixed in the middle of both sides of the upper sealing shell 5 and the lower sealing shell 6. A limited position fixing half ring 12 is fixed on the outer side of the side fixing half ring 11. An outer fixing half ring 13 is fixed on the outer side of the limited position fixing half ring 12. An outer locking sleeve 18 is provided on the outer side of the upper and lower outer fixing half rings 13 on each side. An anti-slip patch 20 is fixed to the front and rear ends of the outer locking sleeve 18 by hot melt, and the outer surface of the anti-slip patch 20 is provided with anti-slip patterns;
[0027] The outer locking sleeve 18 is pushed toward the outer fixing half ring 13 , and the outer locking sleeve 18 is pushed inward until the middle spring piece 16 corresponds to the position of the through rectangular groove 19 . At this time, the outer locking sleeve 18 fixes the positions of the two outer fixing half rings 13 to create a sealed environment inside the outer seal 4 .
[0028] A rectangular groove 9 is provided at the inner end in the middle of the rear end surface of the upper sealing shell 5, and a protruding strip 10 is integrally connected to the rear end position of the lower sealing shell 6 and the matching position of the rectangular groove 9. The protruding strip 10 is located in the rectangular groove 9 and is rotatably connected to the upper sealing shell 5 through an axis. A front extension plate 7 is fixed in the middle of the inner ends of the front ends of the upper sealing shell 5 and the lower sealing shell 6, and the two front extension plates 7 are fixed by fixing bolts 8; when the upper sealing shell 5 and the lower sealing shell 6 are connected and fixed by a fixing bolt 8, the temporary fixing force of the outer locking sleeve 18 on the upper sealing shell 5 and the lower sealing shell 6 during the advancement process can be reduced, so that the two outer fixing half rings 13 can be directly fitted, which is convenient for the advancement of the outer locking sleeve 18.
[0029] Furthermore, connecting spring pieces 17 are fixed on both sides of the middle of the outer side of the outer fixing half ring 13. The connecting spring pieces 17 are arranged obliquely, and an intermediate spring piece 16 is integrally connected between each group of two connecting spring pieces 17. A through rectangular groove 19 is penetrated through the outer locking sleeve 18 at a position corresponding to the intermediate spring piece 16. The length of the through rectangular groove 19 is greater than the length of the intermediate spring piece 16, and the width of the through rectangular groove 19 is slightly greater than the width of the intermediate spring piece 16. The outer diameter of the outer fixing half ring 13 is smaller than the inner diameter of the outer locking sleeve 18, leaving deformation space for the connecting spring piece 17 and the intermediate spring piece 16.
[0030] Press the two middle spring pieces 16 that penetrate the rectangular grooves 19 to deform the middle spring pieces 16 and the connecting spring pieces 17 inwardly, then take out the outer locking sleeve 18; then unscrew the nuts of the fixing bolts 8 to complete the preparatory work before installation.
[0031] Open the upper sealing shell 5 upwards, place the branching position of the automobile wiring harness between the upper sealing shell 5 and the lower sealing shell 6 of the outer sealing member 4, then rotate the upper sealing shell 5 downwards to drive the upper sealing shell 5 and the lower sealing shell 6 to form a whole again, and use the fixing bolts 8 to complete the simple fixation of the upper sealing shell 5 and the lower sealing shell 6.
[0032] Furthermore, semi-cylindrical bars 14 are hot-melt-fixed on the inner surfaces of the side fixing semi-ring 11, the limiting fixing semi-ring 12 and the outer fixing semi-ring 13. The semi-cylindrical bars 14 are arranged in a circular array on the inner surfaces of the side fixing semi-ring 11, the limiting fixing semi-ring 12 and the outer fixing semi-ring 13. The internal structure is squeezed by external pressure so that the gap between the structures is as small as possible to achieve relative sealing. The diameter of the semi-cylindrical bars 14 located outside the bus harness 1 is smaller than the diameter of the semi-cylindrical bars 14 located outside the branch wire 2. The branch wire 2 loses the external insulating tube after branching, and the overall diameter is reduced. Therefore, the size of the sealing structure here is set to be larger.
[0033] A cable cavity 15 is formed between the two upper and lower sets of side fixing half rings 11, the limiting fixing half ring 12 and the outer fixing half ring 13 on each side. The cable cavity 15 is connected with the hollow cavity, and the bus harness 1 and the branch wires 2 are respectively clamped in the two cable cavities 15.
[0034] The outer locking sleeve 18 is pushed toward the outer fixing half ring 13, and the outer locking sleeve 18 is pushed inward along the two outer fixing half rings 13 and the connecting spring piece 17 until the middle spring piece 16 corresponds to the position of the through rectangular groove 19, and the middle spring piece 16 can be reset halfway and stuck in the through rectangular groove 19. At this time, the outer locking sleeve 18 exerts pressure on the middle spring piece 16 and the connecting spring piece 17, and the pressure is transmitted to the position of the semi-cylindrical strip 14 through the outer fixing half ring 13. The semi-cylindrical strip 14 squeezes the cable in the cable cavity 15 to create a sealed environment in the outer seal 4.
[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A sealed wiring harness for an automobile, comprising a main harness (1), a branch wire (2) and a sealed joint (3), wherein the main harness (1) and the branch wire (2) are located on both sides of the sealed joint (3), and the main harness (1) and the branch wire (2) are branched inside the sealed joint (3); Features: The sealing joint (3) comprises an outer sealing member (4), the outer sealing member (4) being composed of an upper sealing shell (5) and a lower sealing shell (6), wherein a hollow cavity is formed inside the upper sealing shell (5) and the lower sealing shell (6), and a side fixing half ring (11) is fixed in the middle of both sides of the upper sealing shell (5) and the lower sealing shell (6), and a limiting fixing half ring (12) is fixed on the outer side of the side fixing half ring (11), and an outer fixing half ring (13) is fixed on the outer side of the limiting fixing half ring (12), and an outer locking sleeve (18) is arranged on the outer side of the two upper and lower outer fixing half rings (13) on each side, and the outer diameter of the outer fixing half ring (13) is smaller than the inner diameter of the outer locking sleeve (18).
2. The automotive sealed wiring harness according to claim 1, characterized in that: A rectangular groove (9) is provided at the inner end in the middle of the rear end surface of the upper sealing shell (5), and a protruding strip (10) is integrally connected to the rear end of the lower sealing shell (6) at a position matching the rectangular groove (9). The protruding strip (10) is located in the rectangular groove (9) and is rotatably connected to the upper sealing shell (5) via an axis.
3. The automotive sealed wiring harness according to claim 1, characterized in that: Connecting spring sheets (17) are fixed on both sides of the middle of the outer side of the outer fixing half ring (13). The connecting spring sheets (17) are arranged obliquely, and an intermediate spring sheet (16) is integrally connected between each group of two connecting spring sheets (17).
4. The automotive sealed wiring harness according to claim 3, characterized in that: A through rectangular groove (19) is formed on the outer locking sleeve (18) at a position corresponding to the middle spring piece (16), and the length of the through rectangular groove (19) is greater than the length of the middle spring piece (16).
5. The automotive sealed wiring harness according to claim 1, characterized in that: A semi-cylindrical strip (14) is hot-melt-fixed on the inner surfaces of the side fixing semi-ring (11), the limit fixing semi-ring (12) and the outer fixing semi-ring (13). The semi-cylindrical strip (14) is arranged in a circular array on the inner surfaces of the side fixing semi-ring (11), the limit fixing semi-ring (12) and the outer fixing semi-ring (13). The diameter of the semi-cylindrical strip (14) located outside the main bus harness (1) is smaller than the diameter of the semi-cylindrical strip (14) located outside the branch wire (2). A cable cavity (15) is formed between the upper and lower groups of the side fixing semi-ring (11), the limit fixing semi-ring (12) and the outer fixing semi-ring (13) on each side. The cable cavity (15) is connected to the hollow cavity. The main bus harness (1) and the branch wire (2) are respectively clamped in the two cable cavities (15).
6. The automotive sealed wiring harness according to claim 1, characterized in that: A front extension plate (7) is fixed in the middle of the inner ends of the front ends of the upper sealing shell (5) and the lower sealing shell (6), and the two front extension plates (7) are fixed by fixing bolts (8).
7. The automotive sealed wiring harness according to claim 1, characterized in that: The front and rear ends of the outer locking sleeve (18) are hot-melt-fixed with an anti-skid patch (20), and the outer surface of the anti-skid patch (20) is provided with anti-skid patterns.