A harness after-end fairing

Abstract

This utility model discloses a rear end cover for wire harnesses, belonging to the technical field of wire harness cover technology. It includes two half-shells, each with a connector limiting ring at one end and a corrugated tube limiting ring assembly at the other end. The corrugated tube limiting ring assembly comprises several sets of corrugated tube limiting rings, with the inner diameter of each set increasing progressively away from the connector limiting ring. The half-shells protect the cable; one end uses the connector limiting ring to engage and position the cable connector, while the other end uses the corrugated tube limiting ring assembly to engage and position the corrugated tube. This provides reliable protection and guidance for the cable, and facilitates cable connector and cable installation and disassembly, making maintenance easier and improving work efficiency. The multiple sets of corrugated tube limiting rings allow for flexible application to corrugated tubes of different diameters, ensuring reliable limiting of the corrugated tube and improving the versatility and flexibility of the rear end cover, effectively reducing the cost of developing different models of rear end covers for wire harnesses.

Description

Technical Field

[0001] This utility model belongs to the field of wire harness protective shell technology, specifically a wire harness tail protective shell. Background Technology

[0002] In the modern automotive industry, automotive wiring harnesses, as a key component of the automotive electrical system, play a vital role in conducting current and transmitting signals. With the rapid development of the automotive industry and the continuous improvement of automotive electronics, the application of automotive wiring harnesses has become increasingly widespread and complex.

[0003] Automotive wiring harnesses connect various power components within a vehicle, such as the engine, battery, sensors, and various electronic control units. These components are intertwined, forming a complex electrical network. In the production of medium and heavy-duty trucks, the number of wiring harnesses is numerous and their layout complex. On the one hand, these wiring harnesses need to be properly secured and protected to prevent damage or short circuits caused by vibration and friction during vehicle operation, which could affect the normal operation of the vehicle and even pose safety hazards. On the other hand, to ensure the precision of vehicle assembly and meet the aesthetic requirements of the vehicle's appearance, the routing of the wiring harnesses must be strictly limited.

[0004] Currently, there are many types of products on the market for protecting automotive wiring harnesses, but they all have some common problems. Traditional wiring harness protective shells are mostly single-model corrugated tubes with a single diameter. This leads to the need to prepare multiple models of shells when facing different tube diameter requirements, significantly increasing material management costs. Moreover, most protective shells only provide basic protection, and are not comprehensive enough in protecting the exposed parts of the wiring harness connectors and corrugated tube connections, making it difficult to effectively prevent damage caused by bumps, dust, and water splashes. In addition, some protective shells have unreasonable structural designs, resulting in insufficient tightness between the sheath, back cover, and corrugated tube, which can easily lead to mutual interference or separation, affecting the stability and reliability of the wiring harness. Utility Model Content

[0005] To address the problem that traditional wire harness tail cover has poor versatility and cannot be flexibly applied to corrugated pipes of different diameters, thus greatly increasing costs, this utility model provides a wire harness tail cover.

[0006] This utility model is achieved through the following technical solution:

[0007] A cable harness tail cover includes two semi-cylindrical half-shells that can be interlocked together. One end of each half-shell has a corresponding connector limiting ring for positioning and clamping cable connectors. The other end of each half-shell has a corrugated tube limiting ring assembly for positioning and clamping corrugated tubes. The corrugated tube limiting ring assembly includes several sets of corrugated tube limiting rings spaced apart, and the inner diameter of each set of corrugated tube limiting rings increases progressively in the direction away from the connector limiting rings.

[0008] A further improvement of this utility model is that the bellows limiting ring assembly includes a first bellows limiting ring, a second bellows limiting ring, and a third bellows limiting ring arranged sequentially along the direction away from the plug-in limiting ring.

[0009] A further improvement of this utility model is that two bellows limiting rings are provided at intervals in each group.

[0010] A further improvement of this utility model is that the cross-section of the bellows limiting ring is a trapezoid with a narrow inner section and a wide outer section.

[0011] A further improvement of this utility model is that a bellows bending limiting ring is provided on the outer side of the bellows limiting ring assembly, and the inner diameter of the bellows bending limiting ring is consistent with the inner diameter of the bellows limiting ring adjacent to it.

[0012] A further improvement of this utility model is that the cross-section of the bellows bending limiting ring is a right-angled trapezoid with a narrow inner section and a wide outer section, and the right angle is located at the end of the half shell.

[0013] A further improvement of this utility model is that the middle edges of the two half-shells are connected by a flexible connecting part.

[0014] A further improvement of this utility model is that the two sides of the two halves of the shell are respectively provided with corresponding fasteners and latches.

[0015] A further improvement of this utility model is that the connector limiting ring is provided with two intervals.

[0016] A further improvement of this utility model is that the rear tail cover is cylindrical or bent at a right angle.

[0017] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0018] The cable is protected by two interlocking half-shells. One end uses a connector retaining ring to lock and position the cable connector, while the other end uses a corrugated tube retaining ring assembly to lock and position the corrugated tube. This provides reliable protection and guidance for the cable, and facilitates easy installation and removal of cable connectors and cables, making maintenance convenient and improving work efficiency. Multiple sets of corrugated tube retaining rings allow for flexible application to corrugated tubes of different diameters, ensuring reliable positioning of the corrugated tube and improving the versatility and flexibility of the rear sheath of this wiring harness. This effectively reduces the cost of developing different models of rear sheaths for wiring harnesses. The corrugated tube retaining rings at different positions can distribute the external force on the rear sheath to multiple points, making the stress distribution more uniform, reducing local stress concentration, improving the structural strength of the rear sheath, and thus extending its service life. Especially in vibration environments such as vehicle driving, this helps improve the fatigue resistance of the wiring harness system. The overall structure is simple, easy to use, and highly practical. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram showing the unfolded state of a specific embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the installation of the first corrugated pipe according to a specific embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the installation of the second corrugated pipe according to a specific embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the installation of the third corrugated pipe according to a specific embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram showing the arrangement of the corrugated pipe limiting ring and the corrugated pipe bending limiting ring in a specific embodiment of this utility model.

[0026] In the attached diagram: 1. First half-shell; 2. Second half-shell; 3. Connector mounting port; 4. Corrugated pipe fixing port; 5. Connector limiting ring; 61. Corrugated pipe limiting ring assembly; 611. First corrugated pipe limiting ring; 612. Second corrugated pipe limiting ring; 613. Third corrugated pipe limiting ring; 62. Corrugated pipe bending limiting ring; 7. Buckle; 8. Locking block; 9. Connecting part; 10. First corrugated pipe; 11. Second corrugated pipe; 12. Third corrugated pipe. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] like Figure 1-6 As shown, this utility model discloses a rear end cover for a wire harness, including two semi-cylindrical half-shells that can be interlocked together. The two half-shells are a first half-shell 1 and a second half-shell 2, respectively. One end of the rear end cover is a square connector mounting port 3, and the other end of the rear end cover is a circular corrugated tube fixing port 4. One end of the two half-shells (connector mounting port 3) is provided with a corresponding connector limiting ring 5 (U-shaped) for positioning and clamping the cable connector. The other end of the two half-shells (corrugated tube fixing port 4) is provided with a corrugated tube limiting ring assembly 61 for positioning and clamping the corrugated tube. The corrugated tube limiting ring assembly 61 includes several sets of corrugated tube limiting rings (semi-circular rings) spaced apart, and the inner diameter of each set of corrugated tube limiting rings increases progressively in the direction away from the connector limiting ring 5.

[0029] The cable is protected by two interlocking half-shells. One end is secured by a connector limiting ring 5, while the other end is secured by a corrugated tube limiting ring assembly 61. This provides reliable protection and guidance for the cable, and facilitates easy installation and removal of the cable connectors and the cable itself, making maintenance easier and improving work efficiency. Multiple sets of corrugated tube limiting rings allow for flexible application (positioning and locking) of corrugated tubes of different diameters, ensuring reliable limiting of the corrugated tube and improving the versatility and flexibility of the rear sheath of this cable harness. This effectively reduces the cost of developing rear sheaths for different models of cable harnesses. The overall structure is simple, easy to use, and highly practical.

[0030] In addition, the corrugated pipe limiting rings at different positions can disperse the external force on the rear tail shield to multiple points, making the stress distribution more uniform, reducing the phenomenon of local stress concentration, improving the structural strength of the rear tail shield, and thus extending the service life of the rear tail shield. Especially in vibration environments such as vehicle driving, it helps to improve the fatigue resistance of the wiring harness system.

[0031] The bellows limiting ring assembly 61 includes a first bellows limiting ring 611, a second bellows limiting ring 612, and a third bellows limiting ring 613 arranged sequentially along the direction away from the connector limiting ring 5, with the inner diameters of the first bellows limiting ring 611, the second bellows limiting ring 612, and the third bellows limiting ring 613 increasing sequentially. This allows for precise and reliable locking and limiting of three different specifications of bellows; specifically, the first bellows limiting ring 611 locks and limits the smaller diameter bellows, such as... Figure 3 As shown; the second bellows limiting ring 612 can achieve locking and limiting of the center diameter bellows, such as Figure 4 As shown; the third bellows limiting ring 613 can achieve locking and limiting of bellows with larger diameters, such as... Figure 5 As shown.

[0032] Each set of bellows retaining rings has two spaced rings. These two retaining rings in each set provide a more reliable locking and restraining action on the bellows. Compared to a single retaining ring, this better constrains the bellows, preventing axial or radial displacement or wobbling during use. This results in a more stable connection between the bellows and the rear sheath, ensuring the stability of the wiring harness during operation and reducing potential damage or poor contact caused by bellows movement or displacement. The two spaced retaining rings also form a double-seal structure to some extent. When the bellows is installed inside the sheath, the two retaining rings... It can be tightly fitted to different parts of the corrugated pipe to further prevent external contaminants such as dust, moisture, and oil from entering the interior of the housing through the gap between the corrugated pipe and the housing, thus providing better protection for the internal wire harness and extending its service life. It can also distribute the force on the corrugated pipe to the two corrugated pipe limiting rings, avoiding excessive pressure or tension on a single corrugated pipe limiting ring, reducing the stress on each corrugated pipe limiting ring, reducing the possibility of deformation or damage to the corrugated pipe limiting rings due to long-term stress, and improving the reliability and durability of the entire rear housing of the wire harness.

[0033] Furthermore, the corrugated tube retaining ring has a trapezoidal cross-section that is narrower on the inside and wider on the outside. This trapezoidal cross-section design guides the corrugated tube during insertion, reducing installation difficulty and improving efficiency. It facilitates rapid assembly during production, reducing manual operation time and costs. The retaining ring also better holds the corrugated tube in place. As the corrugated tube is inserted deeper, the contact area between the retaining ring and the tube gradually increases, generating greater friction. This more firmly positions the corrugated tube within the housing, preventing axial movement or wobbling during use. The retaining effect is better, and a tighter fit is formed between the corrugated tube and the retaining ring, effectively preventing dust, moisture, and other external impurities from entering the wiring harness. This improves the harness's sealing and protective performance, ensuring stable electrical performance.

[0034] Specifically, the first bellows limiting ring 611 has a height (thickness) of 6.25 mm, a lower (outer) base length of 0.75 mm, an upper (inner) base length of 0.4 mm, and a spacing (inner end) of 2.85 mm between two first bellows limiting rings 611. The second bellows limiting ring 612 has a height (thickness) of 3.75 mm, a lower (outer) base length of 0.75 mm, an upper (inner) base length of 0.4 mm, and a spacing (inner end) of 3.15 mm between two second bellows limiting rings 612. The third bellows limiting ring 613 has a height (thickness) of 1.75 mm, a lower (outer) base length of 0.75 mm, an upper (inner) base length of 0.4 mm, and a spacing (inner end) of 3.35 mm between two third bellows limiting rings 613. The adjacent first bellows limiting ring 611 and the second bellows limiting ring 612 are spaced 6mm apart, and the adjacent second bellows limiting ring 612 and the third bellows limiting ring 613 are spaced 6mm apart.

[0035] The bellows limiting ring assembly 61 includes a bellows bending limiting ring 62 on its outer side. The inner diameter of the bellows bending limiting ring 62 is the same as the inner diameter of its adjacent bellows limiting ring (the third bellows limiting ring 613), and its height (rear dimension) is 1.75 mm. The bellows bending limiting ring 62 can engage and limit the bellows during bending, preventing excessive radial displacement caused by excessive stretching of the bellows inside the rear tail sheath, reducing bellows wear, and improving the service life of the bellows.

[0036] Furthermore, such as Figure 6 As shown, the corrugated pipe bending limiting ring 62 has a cross-section that is narrower on the inside and wider on the outside, with the right angle located at the end of the half-shell. The lower base (outer side) of the corrugated pipe bending limiting ring 62 is 1.5 mm long, and the upper base (inner side) is 0.8 mm long. When the corrugated pipe is bent, the ring provides guidance for the corrugated pipe bending limiting ring 62 to engage with the corrugated pipe, and improves the fit between the ring and the corrugated pipe, achieving more reliable limiting of the corrugated pipe; it also strengthens the rear protective shell, preventing deformation during use.

[0037] The two halves of the housing are connected at their midpoints by a flexible connecting part 9. This flexible connecting part 9 allows the two halves to rotate relative to each other. When installing the wiring harness, the two halves can be easily opened and closed to place the harness inside the housing without complicated operations or tools. When the wiring harness needs to be inspected or replaced, the two halves can also be easily opened, improving the maintainability of the wiring harness system. Furthermore, the two halves can be kept connected (open or closed) at all times, preventing separation and loss of the halves, thus improving ease of use.

[0038] The two halves of the housing are equipped with corresponding latches 7 and locking blocks 8 on their respective edges. Specifically, one half of the housing has latches 7 on each edge, and the other half has locking blocks 8 on each edge that engage with the latches 7. Through the corresponding engagement of the latches 7 and locking blocks 8, the two halves of the housing are tightly connected, forming a complete and stable structure for the rear sheath of the wiring harness. This effectively prevents accidental separation of the two halves during use, ensuring reliable protection of the internal wiring harness. The design of the latches 7 and locking blocks 8 provides accurate positioning for the installation of the two halves of the housing. Operators can quickly and accurately fasten the two halves of the housing, ensuring the relative positional accuracy of the two halves. This allows internal components such as the connector limiting ring 5 and the bellows limiting ring to accurately position and lock the connectors and bellows. The combination of clips improves the installation accuracy of the entire wire harness system; when the wire harness needs to be inspected, replaced or maintained, the two halves of the shell can be quickly separated, making the operation simple and convenient and improving the maintainability of the wire harness system; the connection between clip 7 and clip 8 allows the two halves of the shell to work together better when subjected to vibration and impact, jointly bearing external forces, which can absorb and buffer vibration energy to a certain extent, reduce the relative displacement and collision between the two halves of the shell, thereby improving the vibration resistance of the entire wire harness rear shell and reducing the risk of shell damage, wire harness loosening or wear caused by vibration.

[0039] Among them, the cross-section of the locking block 8 is a right-angled triangle, which provides guidance for the locking buckle 7 and the locking block 8 to engage, ensuring the accuracy and convenience of engagement.

[0040] The connector limiting ring 5 is provided at intervals of two. The two connector limiting rings 5 ​​reliably position and clamp the cable connector, ensuring the reliability and sealing of the cable connector connection and installation.

[0041] The rear sheath is cylindrical, bent at right angles, or in other curved shapes. Depending on the installation scenario, it can guide and restrain cables along different routes, providing good protection and improving flexibility and versatility in use.

[0042] This wiring harness rear sheath protects the cable through two interlocking half-shells. One end uses a connector limiting ring 5 to lock and position the cable connector, while the other end uses a corrugated tube limiting ring assembly 61 to lock and position the corrugated tube. This provides reliable protection and guidance for the cable, and facilitates easy installation and removal of cable connectors and cables, making maintenance convenient and improving work efficiency. Multiple sets of corrugated tube limiting rings allow for flexible application (positioning and locking) of corrugated tubes of different diameters, ensuring reliable limiting of the corrugated tube and improving the versatility and flexibility of the wiring harness rear sheath. This effectively reduces the cost of developing different models of wiring harness rear sheaths. The corrugated tube limiting rings at different positions can distribute the external force on the rear sheath to multiple points, making the stress distribution more uniform, reducing local stress concentration, improving the structural strength of the rear sheath, and thus extending its service life. Especially in vibration environments such as vehicle driving, it helps improve the fatigue resistance of the wiring harness system. The overall structure is simple, easy to use, and highly practical.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear end cover for a wire harness, comprising two semi-cylindrical half-shells that can be interlocked together, characterized in that, The two halves of the shell are provided with corresponding connector limiting rings (5) for positioning and clamping cable connectors at one end, and the two halves of the shell are provided with bellows limiting ring assemblies (61) for positioning and clamping bellows at the other end. The bellows limiting ring assembly (61) includes several sets of bellows limiting rings arranged at intervals, and the inner diameter of each set of bellows limiting rings increases in the direction away from the connector limiting rings (5); there are two bellows limiting rings arranged at intervals in each set. The bellows limiting ring assembly (61) includes a first bellows limiting ring (611), a second bellows limiting ring (612) and a third bellows limiting ring (613) arranged sequentially in the direction away from the plug-in limiting ring (5); the cross-section of the bellows limiting ring is a trapezoid with a narrow inner section and a wide outer section; The bellows limiting ring assembly (61) is provided with a bellows bending limiting ring (62) on the outside. The inner diameter of the bellows bending limiting ring (62) is the same as the inner diameter of the bellows limiting ring next to it. The cross section of the bellows bending limiting ring (62) is a right trapezoid with a narrow inner diameter and a wide outer diameter, and the right angle is located at the end of the half shell.

2. The rear tail sheath of the wire harness according to claim 1, characterized in that, The two halves of the shell are connected at the middle edge by a flexible connecting part (9).

3. The rear tail sheath of the wire harness according to claim 1, characterized in that, The two halves of the shell are respectively provided with corresponding fasteners (7) and latches (8) on the two sides.

4. The rear tail sheath of the wire harness according to claim 1, characterized in that, There are two spacings for the connector limit ring (5).

5. The rear tail sheath of the wire harness according to claim 1, characterized in that, The rear tail guard is cylindrical or bent at a right angle.

Images