An integrated waterproof and sealed automotive wiring harness junction box structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-14
AI Technical Summary
[0004]本实用新型的目的在于提供一种集成防水密封的汽车线束分线盒结构，以解决上述背景技术中提出的可能无法通过防水、定位以及锁合部件的协同，实现可靠防水防护与稳定结构锁合，在实际的使用过程在中，若防水部件与定位、锁合部件无协同，仅依赖单一防水结构，定位不准会导致密封胶条与密封槽错位，无法充分挤压形变，出现拼接间隙，而锁合不稳固会使接线盖与接线盒贴合松动，密封胶条因压力不足失去密封效果的问题
通过设置的防水密封组件，密封胶条与密封槽适配，挤压填缝形成首道屏障，密封块贴合接线盒内壁补隙，双重防护挡雨水灰尘，防线束受潮短路，定位杆沿定位筒滑动导向，插杆插入L型块初固定，缩短组装时间，降定位误差风险，提效率合格率，拉杆经连接块带限位杆，配弹簧插入插杆锁合，振动时弹簧施压防松，保接线盖与接线盒贴合，避密封失效，适复杂工况，综上，该分线盒通过防水、定位、锁合部件协同，实现可靠防护与稳定锁合，优化组装，满足性能、效率与耐用需求；
Smart Images
Figure CN224637692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automotive wiring harness junction box structure with integrated waterproof sealing, and particularly to an automotive wiring harness junction box structure with integrated waterproof sealing. Background Technology
[0002] Integrated waterproof and sealed automotive wiring harness junction boxes are core components in automotive wiring harness systems used for branching and connecting wiring harnesses. They typically consist of two main parts: a basic support unit and a waterproof sealing unit. The basic support unit includes the junction box (the main container for housing wiring harness terminals and connection structures) and a junction cover (for sealing the junction box opening and protecting internal components). The outer wall of the junction box has several interfaces (for external wiring harness access or exit) depending on the number of wiring harnesses. The waterproof sealing unit is crucial for achieving waterproofing, using a multi-dimensional structural design to prevent moisture and dust intrusion, ensuring stable electrical performance of the wiring harness.
[0003] Existing integrated waterproof and sealed automotive wiring harness junction box structures may not achieve reliable waterproof protection and stable structural locking through the synergy of waterproofing, positioning, and locking components. In actual use, if the waterproofing components do not coordinate with the positioning and locking components, relying solely on a single waterproof structure, inaccurate positioning can lead to misalignment between the sealing strip and the sealing groove, preventing sufficient compression deformation and resulting in splicing gaps. Insecure locking can cause the junction cover to loosen its fit with the junction box, and the sealing strip may lose its sealing effect due to insufficient pressure. Therefore, we propose an integrated waterproof and sealed automotive wiring harness junction box structure. Utility Model Content
[0004] The purpose of this utility model is to provide an integrated waterproof and sealed automotive wiring harness junction box structure to solve the problems mentioned in the background art, which suggest that reliable waterproof protection and stable structural locking may not be achieved through the coordination of waterproof, positioning, and locking components. In actual use, if the waterproof components do not coordinate with the positioning and locking components and rely solely on a single waterproof structure, inaccurate positioning will lead to misalignment of the sealing strip and sealing groove, resulting in insufficient compression deformation and splicing gaps. Furthermore, unstable locking will cause the junction box cover to loosen, and the sealing strip will lose its sealing effect due to insufficient pressure.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated waterproof and sealed automotive wiring harness junction box structure, comprising a junction box, a junction cover on the top of the junction box, an interface on the front of the junction box, and a waterproof sealing assembly at the bottom of the junction cover. The waterproof sealing assembly includes a positioning rod, a plug rod, a sealing strip, a sealing block, an L-shaped block, a pull rod, and a spring. The positioning rod is fixedly installed on the outer wall of the junction cover, and a positioning cylinder is fixedly installed on the outer wall of the junction box. The outer wall of the positioning rod is slidably connected to the inner wall of the positioning cylinder, and the pull rod is connected to a limit rod through a connecting block.
[0006] As a preferred embodiment, the plug is fixedly installed on the outer wall of the junction box, the sealing strip is fixedly connected to the bottom outer side of the junction box, the sealing block is fixedly connected to the top inner side of the junction box, and a sealing groove is provided on the top of the junction box.
[0007] As a preferred embodiment, the sealing strip is adapted to the sealing groove, the outer wall of the sealing block is slidably connected to the inner wall of the junction box, the L-shaped block is fixedly connected to the outer wall of the junction box, the outer wall of the plug is slidably connected to the top inner wall of the L-shaped block, and the outer wall of the pull rod is slidably connected to the side inner wall of the L-shaped block.
[0008] As a preferred embodiment, one end of the pull rod is fixedly connected to one side of the connecting block, the other side of the connecting block is fixedly connected to one end of the limiting rod, the outer wall of the limiting rod is slidably connected to the inner wall of the insert rod, the spring is sleeved on the outside of the pull rod, one end of the spring is fixedly connected to one side of the connecting block, and the other end of the spring is fixedly connected to the outer side wall of the L-shaped block.
[0009] As a preferred embodiment, the interface is provided with a protective component, which includes a fixed frame, a stop block and a magnetic block. The fixed frame is fixedly connected to the outer wall of the junction box and located on the front side of the interface. A fixed rod is fixedly installed on the inner wall of the fixed frame, and a sliding sleeve is fixedly connected to the lower part of the outer wall of the stop block.
[0010] As a preferred embodiment, the inner wall of the sliding sleeve is slidably connected to the outer wall of the fixing rod. Two sets of magnetic blocks are provided. One set of magnetic blocks is fixedly connected to the front outer wall of the stop block, and another set of magnetic blocks is magnetically connected to the rear inner wall of the fixing frame. The other set of magnetic blocks is fixedly connected to the front outer wall of the junction box and located below the interface, and the other set of magnetic blocks is magnetically connected to the lower rear outer wall of the stop block.
[0011] The technical effects and advantages of this utility model are as follows: Through the design of waterproof sealing components, the sealing strip and sealing groove are matched, and the compression and filling of the gaps form the first barrier. The sealing block fits against the inner wall of the junction box to fill the gaps, providing double protection against rain and dust, preventing the wiring harness from getting damp and short-circuiting. The positioning rod slides along the positioning cylinder for guidance, and the insertion rod is inserted into the L-shaped block for initial fixation, shortening the assembly time, reducing the risk of positioning errors, and improving efficiency and pass rate. The pull rod is connected to the connecting block with a limit rod, and is equipped with a spring to be inserted into the insertion rod for locking. During vibration, the spring applies pressure to prevent loosening, ensuring that the junction cover fits snugly against the junction box, avoiding sealing failure, and is suitable for complex working conditions. In summary, this junction box achieves reliable protection and stable locking through the coordinated use of waterproof, positioning, and locking components, optimizing assembly and meeting the requirements of performance, efficiency, and durability. With the protective components in place, the stop block is slidably connected to the fixed rod on the inner wall of the fixed frame via a sliding sleeve. When the operator pushes the stop block along the fixed rod, the interface can be opened or closed directly. When open, the wire harness can be inserted and connected; when closed, the interface is covered. The use and protection of the interface can be switched without disassembling the junction box, which is suitable for the actual operation needs of wire harness insertion and removal. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 for Figure 1 A schematic diagram of the unfolded structure; Figure 4 for Figure 3 A schematic diagram of the unfolded structure of the middle section; Figure 5 This is a partial structural diagram of the waterproof sealing component of this utility model; Figure 6 This is a schematic diagram of the protective component structure of this utility model.
[0013] In the diagram: 1. Junction box; 2. Junction cover; 3. Interface; 4. Waterproof sealing assembly; 401. Positioning rod; 402. Positioning cylinder; 403. Insert rod; 404. Sealing strip; 405. Sealing block; 406. Sealing groove; 407. L-shaped block; 408. Pull rod; 409. Connecting block; 410. Limiting rod; 411. Spring; 5. Protective assembly; 501. Fixing frame; 502. Fixing rod; 503. Stop block; 504. Sliding sleeve; 505. Magnetic block. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see the appendix Figure 1 - Appendix Figure 5 An integrated waterproof and sealed automotive wiring harness junction box structure includes a junction box 1, a junction cover 2 on the top of the junction box 1, an interface 3 on the front of the junction box 1, and a waterproof sealing assembly 4 at the bottom of the junction cover 2. The waterproof sealing assembly 4 includes a positioning rod 401, a plug rod 403, a sealing strip 404, a sealing block 405, an L-shaped block 407, a pull rod 408, and a spring 411. The positioning rod 401 is fixedly installed on the outer wall of the junction cover 2, and a positioning cylinder 402 is fixedly installed on the outer wall of the junction box 1. The outer wall of the positioning rod 401 is slidably connected to the inner wall of the positioning cylinder 402. The pull rod 408 is connected to a limit rod 410 through a connecting block 409. The plug rod 403 is fixedly installed on the outer wall of the junction cover 2. The sealing strip 404 is fixedly connected to the bottom outer side of the junction cover 2, and the sealing block 405 is fixedly connected to the top inner side of the junction cover 2. A sealing groove 406 is provided on the top of the junction box 1.
[0016] The positioning rod 401 can precisely guide the closing position of the wiring cover 2 and the junction box 1 to prevent the seal from failing due to displacement during closing. When closing, the positioning rod 401 is inserted into the positioning cylinder 402 on the outer wall of the junction box 1, which can limit the lateral displacement of the wiring cover 2 and ensure that the sealing strip 404 can be accurately aligned with the sealing groove 406.
[0017] The sealing strip 404 is adapted to the sealing groove 406. The outer wall of the sealing block 405 is slidably connected to the inner wall of the junction box 1. The L-shaped block 407 is fixedly connected to the outer wall of the junction box 1. The outer wall of the plug rod 403 is slidably connected to the top inner wall of the L-shaped block 407. The outer wall of the pull rod 408 is slidably connected to the side inner wall of the L-shaped block 407. One end of the pull rod 408 is fixedly connected to one side of the connecting block 409. The other side of the connecting block 409 is fixedly connected to one end of the limiting rod 410. The outer wall of the limiting rod 410 is slidably connected to the inner wall of the plug rod 403. The spring 411 is sleeved on the outside of the pull rod 408. One end of the spring 411 is fixedly connected to one side of the connecting block 409. The other end of the spring 411 is fixedly connected to the side outer wall of the L-shaped block 407.
[0018] The L-shaped block 407 serves as a support base for the locking structure, providing installation and sliding space for the insertion rod 403 and the pull rod 408, and bearing the force during locking. The inner top wall of the L-shaped block 407 is for the insertion rod 403 to be inserted, and the inner side wall is for the pull rod 408 to slide. The L-shaped structure simultaneously supports the longitudinal insertion rod 403 and the transverse pull rod 408, forming a stable locking frame.
[0019] Specifically, through the waterproof sealing component 4, the sealing strip 404 adapts to the sealing groove 406, and when the cover is closed, it is squeezed to fill the gap, forming the first waterproof barrier. The sealing block 405 fits against the inner wall of the junction box 1, filling the tiny gaps, providing double protection against rainwater and dust, and preventing the wiring harness from getting damp and short-circuiting. The positioning rod 401 slides along the positioning cylinder 402 for guidance, and the insertion rod 403 is inserted into the L-shaped block 407 to achieve initial fixation, shortening the assembly time, reducing the risk of positioning errors, and improving efficiency and pass rate. The pull rod 408 drives the limit rod 410 through the connecting block 409, and cooperates with the spring 411 to insert the insertion rod 403 to complete the locking. When vibrating, the spring 411 applies pressure to prevent loosening, ensuring that the junction cover 2 fits against the junction box 1, avoiding sealing failure, and adapting to complex working conditions. In summary, this junction box achieves reliable protection and stable locking through the synergy of waterproof, positioning, and locking components, optimizes the assembly process, and meets the requirements of performance, efficiency, and durability.
[0020] Please see the appendix Figure 1 Appendix Figure 3 and appendix Figure 6 The interface 3 is provided with a protective component 5. The protective component 5 includes a fixed frame 501, a stop block 503 and a magnetic block 505. The fixed frame 501 is fixedly connected to the outer wall of the junction box 1 and is located on the front side of the interface 3. A fixed rod 502 is fixedly installed on the inner wall of the fixed frame 501. A sliding sleeve 504 is fixedly connected to the lower part of the outer wall of the stop block 503.
[0021] The stop block 503 is connected to the fixed rod 502 via the sliding sleeve 504 and can slide up and down along the fixed rod 502. When sliding up, the stop block 503 leaves the interface 3, exposing the interface 3 for wire harness insertion. When sliding down, the stop block 503 completely covers the interface 3.
[0022] The inner wall of the sliding sleeve 504 is slidably connected to the outer wall of the fixed rod 502. Two sets of magnetic blocks 505 are provided. One set of magnetic blocks 505 is fixedly connected to the front outer wall of the stop block 503. Another set of magnetic blocks 505 is magnetically connected to the rear inner wall of the fixed frame 501. The other set of magnetic blocks 505 is fixedly connected to the front outer wall of the junction box 1 and located below the interface 3. The other set of magnetic blocks 505 is magnetically connected to the lower rear outer wall of the stop block 503.
[0023] When the stop block 503 slides upward to open, the first set of magnetic blocks 505 can fix it in the open position to prevent the stop block 503 from slipping off and blocking the interface 3 due to vehicle bumps. A metal strip is fixedly installed on the rear inner wall of the fixing frame 501. The first set of magnetic blocks 505 is magnetically connected to the metal strip. When the stop block 503 slides downward to close, the second set of magnetic blocks 505 can fix it in the closed position to ensure complete coverage of the interface 3 and achieve reliable protection. A metal strip is also fixedly installed on the lower rear outer wall of the stop block 503. The second set of magnetic blocks 505 is magnetically connected to the metal strip.
[0024] Specifically, through the protective component 5, the stop 503 is slidably connected to the fixing rod 502 on the inner wall of the fixing frame 501 via the sliding sleeve 504. When the operator pushes the stop 503 to slide along the fixing rod 502, the interface 3 can be opened or closed directly. When opened, it allows the wire harness to be inserted and connected. When closed, it covers the interface 3. The use and protection of the interface 3 can be switched without disassembling the junction box, which is suitable for the actual operation needs of wire harness insertion and removal.
[0025] The working principle of this utility model is as follows: This utility model is an integrated waterproof and sealed automotive wiring harness junction box structure. First, the operator aligns the wiring cover 2 with the top opening of the junction box 1, so that the positioning rod 401 on the outer wall of the wiring cover 2 is aligned with the positioning cylinder 402 on the outer wall of the junction box 1. Then, the positioning rod 401 is inserted into the positioning cylinder 402 and slides along its inner wall. At the same time, the sealing block 405 on the inner side of the top of the wiring cover 2 slides against the inner wall of the junction box 1 to complete the initial positioning. After initial positioning, the staff pushes the wiring cover 2 downwards to close it, so that the insertion rod 403 on the outer wall of the wiring cover 2 is inserted into the top inner wall of the L-shaped block 407 on the outer wall of the junction box 1, thus initially fixing the wiring cover 2. Then, the staff pulls the pull rod 408, which slides along the inner wall of the side of the L-shaped block 407. Through the connecting block 409, the limiting rod 410 moves synchronously. At this time, the spring 411 is compressed. After the insertion rod 403 is fully inserted into the L-shaped block 407, the staff releases the pull rod 408, and the spring 411 returns to its elastic deformation, pushing the connecting block 409 and the limiting rod 410 back to their original positions. This allows the limiting rod 410 to be inserted into the inner wall of the insertion rod 403, completing the secure locking of the wiring cover 2 and the junction box 1. At this time, the sealing strip 404 is squeezed to fill the gaps, forming the first waterproof barrier, and the sealing block 405 fills the tiny gaps, forming double protection. When a wire harness needs to be inserted, the operator pushes the stop block 503 upwards. The stop block 503 slides along the fixing rod 502 on the inner wall of the fixing frame 501 via the sliding sleeve 504 until the first set of magnetic blocks 505 on the front outer wall of the stop block 503 is magnetically connected to the metal strip on the rear inner wall of the fixing frame 501. The stop block 503 is then fixed in the open position, exposing the interface 3 for wire harness insertion. When the interface 3 is no longer needed or the wire harness is removed, the operator pushes the stop block 503 downwards, allowing it to slide along the fixing rod 502 to cover the interface 3 until the lower metal strip on the rear outer wall of the stop block 503 is magnetically connected to the second set of magnetic blocks 505 on the front outer wall of the junction box 1. The stop block 503 is then fixed in the closed position, preventing rainwater and dust from entering the interface 3.
[0026] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An integrated waterproof sealed automobile wire harness distribution box structure, comprising a junction box (1), the top of the junction box (1) is provided with a junction cover (2), and the front of the junction box (1) is provided with an interface (3), characterized in that: The bottom of the junction box (2) is provided with a waterproof sealing assembly (4). The waterproof sealing assembly (4) includes a positioning rod (401), a plug rod (403), a sealing strip (404), a sealing block (405), an L-shaped block (407), a pull rod (408), and a spring (411). The positioning rod (401) is fixedly installed on the outer wall of the junction box (2). A positioning cylinder (402) is fixedly installed on the outer wall of the junction box (1). The outer wall of the positioning rod (401) is slidably connected to the inner wall of the positioning cylinder (402). The pull rod (408) is connected to a limit rod (410) through a connecting block (409).
2. The integrated waterproof sealed automotive wire harness junction block structure of claim 1, wherein: The plug rod (403) is fixedly installed on the outer wall of the wiring cover (2), the sealing strip (404) is fixedly connected to the bottom outer side of the wiring cover (2), the sealing block (405) is fixedly connected to the top inner side of the wiring cover (2), and the top of the junction box (1) is provided with a sealing groove (406).
3. The integrated waterproof sealed automotive wire harness junction block structure of claim 2, wherein: The sealing strip (404) is adapted to the sealing groove (406), the outer wall of the sealing block (405) is slidably connected to the inner wall of the junction box (1), the L-shaped block (407) is fixedly connected to the outer wall of the junction box (1), the outer wall of the plug rod (403) is slidably connected to the top inner wall of the L-shaped block (407), and the outer wall of the pull rod (408) is slidably connected to the side inner wall of the L-shaped block (407).
4. The integrated waterproof sealed automotive wire harness junction block structure of claim 3, wherein: One end of the pull rod (408) is fixedly connected to one side of the connecting block (409), and the other side of the connecting block (409) is fixedly connected to one end of the limiting rod (410). The outer wall of the limiting rod (410) is slidably connected to the inner wall of the insert rod (403). The spring (411) is sleeved on the outside of the pull rod (408). One end of the spring (411) is fixedly connected to one side of the connecting block (409), and the other end of the spring (411) is fixedly connected to the outer side wall of the L-shaped block (407).
5. The integrated waterproof sealed automotive wire harness junction block structure of claim 4, wherein: The interface (3) is provided with a protective component (5). The protective component (5) includes a fixed frame (501), a stop (503) and a magnetic block (505). The fixed frame (501) is fixedly connected to the outer wall of the junction box (1) and located in front of the interface (3). A fixed rod (502) is fixedly installed on the inner wall of the fixed frame (501). A sliding sleeve (504) is fixedly connected to the lower part of the outer wall of the stop (503).
6. The integrated waterproof sealed automotive wire harness junction block structure of claim 5, wherein: The inner wall of the sliding sleeve (504) is slidably connected to the outer wall of the fixing rod (502). There are two sets of magnetic blocks (505). One set of magnetic blocks (505) is fixedly connected to the front outer wall of the stop (503). Another set of magnetic blocks (505) is magnetically connected to the rear inner wall of the fixing frame (501). The other set of magnetic blocks (505) is fixedly connected to the front outer wall of the junction box (1) and located below the interface (3). The other set of magnetic blocks (505) is magnetically connected to the lower rear outer wall of the stop (503).