A prefabricated shielded wire harness structure

Abstract

This utility model relates to the field of wire harness technology, and provides an assembled shielded wire harness structure, including a shell, with bosses fixed on the outer sides of both ends of the shell, a wire inlet cavity inside the shell, a fixing structure installed inside the wire inlet cavity, and protective structures inside the shielding ring and the inner core. This utility model, through the setting of the fixing structure, the corresponding engagement structure of the locking block and the locking slot, the attraction between the first magnetic ring and the second magnetic ring, and the threaded connection design between the inner core and the mounting block, achieves rapid positioning and assembly of each component, significantly shortening installation time and improving assembly efficiency. Furthermore, the tight contact between the elastic conductive sheet and the shielding ring eliminates electromagnetic leakage channels that may be caused by installation gaps, further strengthening the integrity of the overall shielding and ensuring the stability of the shielding effect.

Description

Technical Field

[0001] This utility model relates to the field of wire harness technology, and in particular to an assembled shielded wire harness structure. Background Technology

[0002] As a key component for transmitting electrical signals and energy in electronic devices, wire harnesses directly affect the stability and reliability of the devices. The fixed structure of traditional shielded wire harnesses is not stable enough. Under conditions such as vibration and impact, the shielding layer and the outer shell are prone to loosening, which further aggravates the electromagnetic leakage problem and cannot meet the requirements of high-precision electronic devices.

[0003] To address this, patent CN220962907U discloses a prefabricated shielded wire harness structure, including a mold, an inner core, and a shielding ring. Multiple retainers are fixedly installed at the other end of the mold. Multiple ribs are fixedly connected to the outer wall of one end of the shielding ring, and a first sealing ring is fixedly connected to one end of the shielding ring. A second sealing ring is movably installed at one end of the inner core, and multiple snap-fits are movably connected to one side of the second sealing ring. This prefabricated shielded wire harness structure achieves a tight fit and fixed connection between the inner core and the shielding ring by riveting one end of the inner core and one end of the shielding ring. A threaded hole is opened on the outer wall of one end of the inner core, and a nut is threadedly connected to the riveted inner core, thus making the connection between the inner core and the shielding ring more stable. The riveted inner core and shielding ring are assembled into the mold, and multiple snap-fits are movably connected to one side of the second sealing ring. Multiple retainers are installed at one end of the mold, allowing for easy disassembly and replacement of the inner core and the shielding ring by engaging the retainers in slots.

[0004] The assembled shielded wire harness structure described above uses riveting to fix the inner core and the shielding ring together during use. Although this can ensure connection stability, riveting is an irreversible operation. If the inner core or the shielding ring needs to be replaced separately, the original structure must be destroyed, making disassembly difficult and causing component damage. Utility Model Content

[0005] The purpose of this invention is to provide an assembled shielded wire harness structure to address the shortcomings of existing assembled shielded wire harness structures in terms of ease of assembly.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an assembled shielded wire harness structure, including a shell;

[0007] The outer sides of both ends of the outer shell are fixed with bosses. The inner side of the outer shell is provided with a cable inlet cavity. The cable inlet cavity is equipped with a fixing structure. The fixing structure includes baffles fixed to both ends of the cable inlet cavity. The baffles are provided with slots at their close ends. Mounting blocks are installed at both ends of the outer shell. The bottom end of the mounting block is fixed with a locking block. The inside of the mounting block is provided with a threaded groove. The bottom end of the mounting block is provided with a first magnetic ring. The two ends of the outer shell are provided with a second magnetic ring. The bottom end of the mounting block inside the first magnetic ring is fixed with a shielding ring. The inner side of the outer shell is fixed with an elastic conductive sheet. The inside of the mounting block is equipped with an inner rubber core. The outer sides of both ends of the inner rubber core are provided with external threads.

[0008] The shielding ring and the inner core are equipped with a protective structure.

[0009] Preferably, the baffle is arranged in a ring shape, the slots are evenly distributed at one end of the baffle, the cross-section of the mounting block is arranged in a "T" shape, and the mounting blocks are symmetrically distributed at both ends of the outer shell.

[0010] The above structure, through its equally spaced design, ensures uniform force distribution between the mounting block and the retaining platform during use, avoiding installation deviations caused by excessively tight or loose local engagement. It also guarantees the stability of the mounting block in the circumferential direction, preventing it from rotating and loosening.

[0011] Preferably, the card blocks are evenly distributed at the bottom of the mounting block, each card block corresponds to a card slot, and the card blocks and the stop form an engaging structure through the card slots, with the first magnetic ring and the second magnetic ring attracting each other.

[0012] With the above structure, the magnetic ring enhances the connection between the mounting block and the outer shell during use, filling any minor gaps in the locking structure and improving the sealing of the assembly. Simultaneously, it assists the mounting block in quickly fitting the outer shell, facilitating initial fixation during assembly and making the locking operation between the block and the slot smoother.

[0013] Preferably, the elastic conductive sheets are distributed at equal intervals at both ends inside the inlet cavity, one side of the elastic conductive sheet abuts against the outer side of the shielding ring, the external thread matches the thread groove, and the inner rubber core and the mounting block are connected by the external thread and the thread groove.

[0014] With the above structure, during use, the elastic conductive sheet can evenly contact the outside of the shielding ring, thereby eliminating the installation gap between the shielding ring and the outer shell through the conductive material of the elastic conductive sheet, forming a continuous conductive path, avoiding electromagnetic leakage at the gap, enhancing the electromagnetic shielding integrity of the overall structure, and improving the shielding effect.

[0015] Preferably, the protective structure includes a base layer disposed inside the shielding ring, a first reinforcing layer disposed inside the base layer, a second reinforcing layer disposed outside the first reinforcing layer, an outer layer disposed inside the inner core, and an inner layer disposed outside the inner core.

[0016] Preferably, the base layer is made of magnesium-aluminum alloy, the first reinforcing layer is made of metal woven mesh, and the second reinforcing layer is made of aluminum foil.

[0017] With the above structure, the metal woven mesh has good conductivity and flexibility during use. Its interwoven mesh structure can effectively block and reflect external electromagnetic interference signals. The aluminum foil layer has excellent sealing and conductivity. Its texture is thin and has good coverage, which can be closely attached to the outside of the first reinforcing layer to further block the penetration of electromagnetic signals.

[0018] Preferably, the outer layer is made of a composite material of polypropylene and glass fiber, and the inner layer is made of a composite material of silicone rubber and silver powder.

[0019] Through the above structure, polypropylene exhibits good insulation, chemical corrosion resistance, and certain mechanical strength during use. The addition of glass fiber further enhances the material's rigidity and impact resistance, enabling the outer layer to effectively resist physical damage such as friction and collisions from the external environment. Simultaneously, it prevents moisture, dust, and other impurities from penetrating the inner core. Silicone rubber, with its excellent elasticity, high-temperature resistance, and sealing properties, tightly conforms to the wires passing through the inner core, forming a good sealed environment and preventing moisture, oil, and other contaminants from entering the wiring harness and affecting signal or power transmission. Furthermore, the addition of silver powder provides conductivity, which helps enhance the conductive connection between the inner core and the shielding ring, further optimizing the overall electromagnetic shielding effect and reducing electromagnetic leakage. The elasticity of the silicone rubber also buffers the stress caused by wire vibration, preventing wear or breakage due to long-term vibration.

[0020] The advantages of the assembled shielded wire harness structure provided by this utility model are as follows:

[0021] By setting up a fixed structure, through the corresponding engagement structure of the card block and the card slot, the attraction of the first magnetic ring and the second magnetic ring, and the threaded connection design of the inner core and the mounting block, the rapid positioning and assembly of each component is realized, which greatly shortens the installation time and improves the assembly efficiency. In addition, the tight contact between the elastic conductive sheet and the shielding ring eliminates the electromagnetic leakage channel that may be generated by the installation gap, further strengthening the integrity of the overall shielding and ensuring the stability of the shielding effect.

[0022] By incorporating a protective structure, the multi-layered shielding ring and the composite material of the inner core form a synergistic shielding system. This not only effectively blocks external electromagnetic interference signals from entering the wire harness, but also prevents electromagnetic signals generated by the wire harness itself from leaking outward, thus meeting the requirements of electronic equipment applications with high shielding requirements. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a three-dimensional exploded structural diagram of the present invention;

[0025] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the outer shell of this utility model;

[0027] Figure 5 This is a three-dimensional exploded view of the fixed structure of this utility model.

[0028] The reference numerals in the figure are as follows: 1. Outer shell; 2. Boss; 3. Cable inlet cavity; 4. Fixing structure; 401. Baffle; 402. Slot; 403. Mounting block; 404. Locking block; 405. Threaded groove; 406. First magnetic ring; 407. Second magnetic ring; 408. Shielding ring; 409. Elastic conductive sheet; 410. Inner core; 411. External thread; 5. Protective structure; 501. Base layer; 502. First reinforcing layer; 503. Second reinforcing layer; 504. Outer layer; 505. Inner layer. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5 The present invention provides an assembled shielded wire harness structure, including a housing 1.

[0031] Reference Figures 1-5As shown, both ends of the outer shell 1 are fixed with bosses 2. The inner shell 1 is provided with a cable inlet cavity 3. A fixing structure 4 is installed inside the cable inlet cavity 3. The fixing structure 4 includes baffles 401 fixed to both ends inside the cable inlet cavity 3. The baffles 401 are provided with slots 402 at their close ends. Both ends of the outer shell 1 are provided with mounting blocks 403. The bottom end of the mounting block 403 is fixed with a locking block 404. The inside of the mounting block 403 is provided with a threaded groove 405. The bottom end of the mounting block 403 is provided with a first magnetic ring 406. Both ends of the outer shell 1 are provided with a second magnetic ring 407. The bottom end of the mounting block 403 is fixed with a shielding ring 408 inside the first magnetic ring 406. An elastic conductive sheet 409 is fixed inside the outer shell 1. An inner core 410 is installed inside the mounting block 403. Both ends of the inner core 410 are fixed with... The device is equipped with an external thread 411, a ring-shaped baffle 401, and slots 402 evenly spaced at one end of the baffle 401. The mounting block 403 has a "T"-shaped cross-section and is symmetrically distributed at both ends of the housing 1. The locking blocks 404 are evenly spaced at the bottom of the mounting block 403, and each locking block 404 corresponds to a slot 402. The locking blocks 404 and the baffle 401 form a locking structure through the slots 402. The first magnetic ring 406 and the second magnetic ring 407 are attracted to each other. The elastic conductive sheets 409 are evenly spaced at both ends inside the inlet cavity 3. One side of the elastic conductive sheet 409 abuts against the outer side of the shielding ring 408. The external thread 411 matches the threaded groove 405. The inner core 410 and the mounting block 403 are threadedly connected through the external thread 411 and the threaded groove 405.

[0032] The equally spaced slots 402 correspond one-to-one with the locking blocks 404 at the bottom of the mounting block 403. Through the locking structure of the locking blocks 404 and the slots 402, the mounting block 403 can be quickly connected and fixed to the outer shell 1, ensuring the stability of the connection. At the same time, the first magnetic ring 406 at the bottom of the mounting block 403 is attracted to the second magnetic rings 407 at both ends of the outer shell 1, which can help fix the mounting block 403 and improve the assembly tightness of the overall structure. The mounting block 403 and the inner core 410 are connected by external threads 411 and threaded grooves 405, which facilitates the installation and removal of the inner core 410. Meanwhile, the elastic conductive sheet 409 on the inner side of the outer shell 1 abuts against the outer side of the shielding ring 408, further enhancing the stability of the shielding ring 408 after installation and preventing it from loosening. It can also eliminate electromagnetic leakage caused by installation gaps.

[0033] Reference Figure 5As shown, a protective structure 5 is provided inside the shielding ring 408 and the inner core 410. The protective structure 5 includes a base layer 501 disposed inside the shielding ring 408, a first reinforcing layer 502 disposed inside the base layer 501, a second reinforcing layer 503 disposed outside the first reinforcing layer 502, an outer layer 504 disposed inside the inner core 410, and an inner layer 505 disposed outside the inner core 410. The base layer 501 is made of magnesium-aluminum alloy, the first reinforcing layer 502 is made of metal braided mesh, the second reinforcing layer 503 is made of aluminum foil, the outer layer 504 is made of polypropylene and glass fiber composite material, and the inner layer 505 is made of silicone rubber and silver powder composite material.

[0034] The base layer 501 inside the shielding ring 408 is made of magnesium-aluminum alloy, providing good structural strength and a solid shielding foundation. Its first reinforcing layer 502 is made of metal braided mesh, which can effectively block external electromagnetic interference. The second reinforcing layer 503 is made of aluminum foil, which further enhances the shielding effect, forming a multi-layered shielding protection. The outer layer 504 inside the inner core 410 is made of polypropylene and glass fiber composite material, which has good insulation and protection performance. The inner layer 505 on the outer side is made of silicone rubber and silver powder composite material, which can not only ensure sealing performance but also help improve shielding and conductivity. Together with the shielding ring 408, it forms a comprehensive shielding protection system.

[0035] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An assembled shielded wire harness structure, comprising a housing (1); Its features are: The outer sides of both ends of the outer casing (1) are fixed with bosses (2). The inner side of the outer casing (1) is provided with a cable inlet cavity (3). The inner side of the cable inlet cavity (3) is equipped with a fixing structure (4). The fixing structure (4) includes baffles (401) fixed to both ends of the inner side of the cable inlet cavity (3). The baffles (401) are provided with slots (402) at their close ends. Both ends of the outer casing (1) are equipped with mounting blocks (403). The bottom end of the mounting blocks (403) is fixed with a locking block (404). The mounting block (403) has a threaded groove (405) inside. The bottom end of the mounting block (403) is provided with a first magnetic ring (406). Both ends of the outer shell (1) are provided with a second magnetic ring (407). The bottom end of the mounting block (403) inside the first magnetic ring (406) is fixed with a shielding ring (408). The inner side of the outer shell (1) is fixed with an elastic conductive sheet (409). The mounting block (403) has an inner core (410) inside. Both ends of the inner core (410) are provided with external threads (411). The shielding ring (408) and the inner core (410) are provided with a protective structure (5).

2. The assembled shielded wire harness structure of claim 1, wherein: The baffle (401) is arranged in a ring shape, the slots (402) are evenly distributed at one end of the baffle (401), the mounting block (403) is arranged in a "T" shape in cross section, and the mounting block (403) is symmetrically distributed at both ends of the outer shell (1).

3. The assembled shielded wire harness structure of claim 1, wherein: The card blocks (404) are evenly distributed at the bottom of the mounting block (403). The card blocks (404) correspond one-to-one with the card slots (402). The card blocks (404) and the baffle (401) form a locking structure through the card slots (402). The first magnetic ring (406) and the second magnetic ring (407) are attracted to each other.

4. The assembled shielded wire harness structure of claim 1, wherein: The elastic conductive sheets (409) are distributed at equal intervals at both ends inside the inlet cavity (3). One side of the elastic conductive sheet (409) abuts against the outer side of the shielding ring (408). The external thread (411) matches the thread groove (405). The inner core (410) and the mounting block (403) are connected by the external thread (411) and the thread groove (405).

5. The assembled shielded wire harness structure of claim 1, wherein: The protective structure (5) includes a base layer (501) disposed inside the shielding ring (408), a first reinforcing layer (502) disposed inside the base layer (501), a second reinforcing layer (503) disposed outside the first reinforcing layer (502), an outer layer (504) disposed inside the inner core (410), and an inner layer (505) disposed outside the inner core (410).

6. The assembled shielded wire harness structure of claim 5, wherein: The base layer (501) is made of magnesium-aluminum alloy, the first reinforcing layer (502) is made of metal woven mesh, and the second reinforcing layer (503) is made of aluminum foil.

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