Shielding structure for preventing electromagnetic interference of automobile wire harness

Abstract

The utility model relates to a kind of related technical field of automobile wiring harness, especially a kind of shielding structure of automobile wiring harness anti-electromagnetic interference, including first protective frame and second protective frame, the opposite face of first protective frame and second protective frame is all set with semicircular groove, the inner wall of semicircular groove is fixedly connected with first copper foil plate, the right side of first protective frame is provided with connecting assembly.A kind of shielding structure of automobile wiring harness anti-electromagnetic interference, through the cooperation setting of first protective frame, second protective frame, first copper foil plate, connecting assembly, arc slot and second copper foil plate, in use, first protective frame and second protective frame can be assembled on the outer surface of wiring harness using connecting assembly, while using arc slot and second copper foil plate cooperation, multiple first protective frame and second protective frame can be assembled, and then wiring harness can be completely enclosed in, and the anti-electromagnetic interference effect of wiring harness is ensured by first copper foil plate and second copper foil plate.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness technology, and in particular to a shielding structure for electromagnetic interference protection of automotive wiring harnesses. Background Technology

[0002] Automotive wiring harnesses are the main network components of a car's electrical system. For example, Bluetooth, displays, center consoles, radios, and broadcasting systems all require wiring harnesses to connect to the car's internal electrical equipment. They are one of the more common parts in automobiles.

[0003] A search revealed a Chinese patent website that discloses an interface structure for an anti-interference automotive wiring harness (publication number: CN220382370U). The structure includes a wiring harness body, one end of which is connected to a connecting sleeve via a data transmission component. The connecting sleeve has a socket near the end of the wiring harness body, with through slots extending through both the upper and lower ends of the socket. A fixing component for securing the wiring harness body is slidably disposed within the through slots. The wiring harness body also contains an anti-interference protection component to enhance the anti-interference capability of the automotive wiring harness and to provide protection, heat insulation, and shielding for the wiring harness. In use, the interface structure is first placed in a suitable position. The rubber insulation layer 201 and metal shielding layer 202 inside the harness body 100 can effectively shield some electromagnetic interference. At the same time, the protective layer 203 and heat insulation layer 204 can effectively protect the internal automotive wiring harness and isolate the heat transfer. When the automotive wiring harness is inserted into the connecting sleeve 101, the sliding wedge 303 moves upward under the pressure of the harness body 100 and the action of the damping spring 305. When the groove 304 on the surface of the harness body 100 moves to below the sliding wedge 303, the sliding wedge 303 slides into the groove 304 under the action of gravity, thereby fixing the harness body 100. When it is necessary to remove the harness body 100 from the connecting sleeve 101, simply pull the pull rod 301 away from the groove 304 to remove the harness body 100. Finally, the use of this structure is completed.

[0004] This application uses a rubber insulation layer and a metal shielding layer inside the wire harness to improve its electromagnetic interference protection effect, which has a certain practical effect, but still has limitations. For example, the wire harness may be subjected to vibration and friction with the interior space of the vehicle during driving. Over time, this can lead to severe wear on the surface of the wire harness or even peeling off the outer sheath. The rubber insulation layer and the metal shielding layer are easily damaged, and the electromagnetic interference protection effect of the wire harness will be worse after damage. Therefore, there is room for improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a shielding structure for electromagnetic interference protection of automotive wiring harnesses, in order to solve the problem mentioned in the background art that the existing automotive wiring harnesses, which use rubber insulation layers and metal shielding layers inside the wiring harness to improve the electromagnetic interference protection effect, are prone to severe wear of the wiring harness surface due to friction with the vehicle interior space after long-term use, thus reducing the electromagnetic interference protection effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shielding structure for electromagnetic interference protection of automotive wiring harnesses, comprising a first protective frame and a second protective frame; The first and second protective frames each have a semi-circular groove on their opposite sides. A first copper foil plate is fixedly connected to the inner wall of the semi-circular groove. A connecting component is provided on the right side of the first protective frame. A positioning component is provided on the upper surface of the first and second protective frames. The connecting component includes two connecting blocks. A conical locking plate is fixedly connected to the right side of the connecting blocks. Two snap-fit ​​grooves are provided on the left side of the second protective frame. A locking mechanism is provided on the inner wall of the snap-fit ​​grooves.

[0007] Preferably, the locking mechanism includes a positioning shaft, two springs are sleeved on the surface of the positioning shaft, and two movable blocks are slidably connected to the inner bottom wall of the locking groove.

[0008] Preferably, both movable blocks are slidably connected to the surface of the positioning shaft, the opposite ends of the two springs overlap with the two movable blocks respectively, and the ends of the two springs away from the movable blocks overlap with the front and rear inner walls of the locking groove respectively. When the two movable blocks move away from each other, they can compress the two springs to cause them to deform.

[0009] Preferably, each of the two movable blocks has a fixed angled locking block on its left side, the position of which corresponds to the position of the conical locking plate. Each of the two movable blocks has a fixed push rod on its right side. The right side of the second protective frame has a strip-shaped hole at the position corresponding to the two locking slots. After the conical locking plate is inserted into the locking slot, it can squeeze the two angled locking blocks, thereby causing the two movable blocks to move away from each other and squeeze the spring. When the angled edge of the conical locking plate is separated from the angled locking blocks, the two springs lose their restrictive effect and, through the reaction force, drive the two angled locking blocks to move closer to each other, and then lock them at the right angle position of the conical locking plate, locking the conical locking plate in the locking slot.

[0010] Preferably, the positions of the two push rods correspond to the positions of the strip holes, and the right ends of the two push rods extend through the strip holes to the right side of the second protective frame. The push rods can actively drive the two movable blocks away from each other, thereby driving the two angled blocks away from each other and disengaging from the right-angle position of the conical plate.

[0011] Preferably, both the first and second protective frames have arc-shaped grooves on their front sides, and both the first and second protective frames have second copper foil plates that are adapted to the arc-shaped grooves fixedly connected to their back sides. The second copper foil plates can be inserted into the arc-shaped grooves for assembly operations, thus enabling the assembly of multiple sets of first and second protective frames, which is convenient for use with automotive wiring harnesses of different lengths.

[0012] Preferably, the positioning component includes a strip-shaped base plate. Threaded grooves are formed on the opposite sides and upper and lower surfaces of the first and second protective frames. The strip-shaped base plate is fixedly connected to the upper surface of the first and second protective frames by two first bolts engaging with the threaded grooves. A connecting plate is fixedly connected to the upper surface of the strip-shaped base plate, and a strip-shaped top plate is fixedly connected to the upper surface of the connecting plate. Two second bolts are threadedly connected to the lower surface of the strip-shaped top plate. The strip-shaped base plate can be fixed to the perimeter of the first and second protective frames by engaging with the first bolts and several threaded grooves on the outer surfaces of the first and second protective frames, and is fixed to the inner wall of the vehicle space by the strip-shaped top plate and the second bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This electromagnetic interference shielding structure for automotive wiring harnesses comprises a first protective frame, a second protective frame, a first copper foil plate, a connecting component, an arc-shaped groove, and a second copper foil plate. In use, the connecting component assembles the first and second protective frames onto the outer surface of the wiring harness. Simultaneously, the arc-shaped groove and the second copper foil plate allow for the assembly of multiple sets of the first and second protective frames, thus completely enclosing the wiring harness. The first and second copper foil plates ensure effective electromagnetic interference protection, and the first and second protective frames also protect the outer surface of the wiring harness, preventing damage or breakage due to friction.

[0014] This electromagnetic interference shielding structure for automotive wiring harnesses, through the setting of positioning components, allows the strip base plate and the first bolt to engage with several threaded grooves on the outer surfaces of the first and second protective frames during use. This enables the strip base plate to fix the first and second protective frames in the vehicle interior space according to the position of the wiring harness near the interior space, ensuring the stability of the wiring harness during normal use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the first and second protective frames of this utility model; Figure 3 This is a three-dimensional structural diagram of the locking mechanism of this utility model; Figure 4This is a three-dimensional structural diagram of the combination of the two sets of first and second protective frames of this utility model.

[0016] In the diagram: 1. First protective frame; 2. Second protective frame; 3. First copper foil plate; 4. Connecting assembly; 5. Positioning assembly; 401. Connecting block; 402. Conical clamping plate; 403. Positioning shaft; 404. Spring; 405. Movable block; 406. Angled clamping block; 407. Push rod; 408. Arc groove; 409. Second copper foil plate; 501. Strip bottom plate; 502. First bolt; 503. Connecting plate; 504. Strip top plate; 505. Second bolt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: Example 1: A shielding structure for electromagnetic interference protection of automotive wiring harnesses, comprising a first protective frame 1 and a second protective frame 2; The first protective frame 1 and the second protective frame 2 each have a semi-circular groove on their opposite sides. A first copper foil plate 3 is fixedly connected to the inner wall of the semi-circular groove. A connecting component 4 is provided on the right side of the first protective frame 1. A positioning component 5 is provided on the upper surface of the first protective frame 1 and the second protective frame 2. The connecting component 4 includes two connecting blocks 401. A conical card plate 402 is fixedly connected to the right side of the connecting block 401. Two snap-fit ​​grooves are provided on the left side of the second protective frame 2. A locking mechanism is provided on the inner wall of the snap-fit ​​grooves.

[0019] Furthermore, the locking mechanism includes a positioning shaft 403, on the surface of which two springs 404 are sleeved. Two movable blocks 405 are slidably connected to the inner bottom wall of the locking groove. Both movable blocks 405 are slidably connected to the surface of the positioning shaft 403. The opposite ends of the two springs 404 overlap with the two movable blocks 405 respectively. The ends of the two springs 404 away from the movable blocks 405 overlap with the front and rear inner walls of the locking groove respectively. An angled locking block 406 is fixedly connected to the left side of each of the two movable blocks 405. The positions of the two angled locking blocks 406 correspond to the positions of the conical locking plate 402. The wire harness is positioned between the first protective frame 1 and the second protective frame 2. After aligning the conical clamping plate 402 with the snap-fit ​​groove, the first protective frame 1 and the second protective frame 2 are joined together. At this point, the conical clamping plate 402 can be inserted into the snap-fit ​​groove. During insertion, the conical clamping plate 402 can press the two angled clamping blocks 406, causing the two angled clamping blocks 406 to move away from each other through the angled edges. The two angled clamping blocks 406 can also cause the two movable blocks 405 to move away from each other, thereby compressing the two springs 404 and causing them to deform until the angled edge of the conical clamping plate 402 is in position. When the two angled locking blocks 406 are disengaged, the two springs 404 are no longer restricted and generate a reaction force to drive the two movable blocks 405 to move closer to each other. The two movable blocks 405 then drive the two angled locking blocks 406 to lock at the right angle position of the conical locking plate 402, preventing the conical locking plate 402 from disengaging from the locking groove. This allows the first protective frame 1 and the second protective frame 2 to be locked on the outer surface of the wire harness. The first copper foil plate 3 on the inner wall of the first protective frame 1 and the second protective frame 2 is used to wrap the wire harness, thereby improving the electromagnetic interference protection effect of the wire harness. Furthermore, push rods 407 are fixedly connected to the right side of both movable blocks 405. Slotted holes are opened on the right side of the second protective frame 2 at positions corresponding to the two snap-fit ​​slots. The positions of the two push rods 407 correspond to the positions of the slotted holes, and the right ends of the two push rods 407 extend through the slotted holes to the right side of the second protective frame 2. The push rod 407 can drive the two movable blocks 405 away from each other. After the two angled locking blocks 406 lock the conical locking plate 402, the push rod 407 can drive the two angled locking blocks 406 away from each other, so that the conical locking plate 402 is no longer restricted in the locking groove. At this time, the conical locking plate 402 can be pulled out from the locking groove, which makes it easy to separate the first protective frame 1 and the second protective frame 2, and thus facilitates the removal of the wire harness for inspection and replacement. Furthermore, the front of the first protective frame 1 and the second protective frame 2 are both provided with arc-shaped grooves 408, and the back of the first protective frame 1 and the second protective frame 2 are both fixedly connected with second copper foil plates 409 that are adapted to the arc-shaped grooves 408. The second copper foil plate 409 can be inserted into the arc-shaped groove 408 on the front of another set of first protective frames 1 and second protective frames 2, so that when the wire harness is encapsulated, it can cooperate with the first copper foil plate 3 to ensure that there are no gaps that would cause the anti-interference effect to deteriorate, and further improve the anti-electromagnetic interference effect of the wire harness.

[0020] Example 2: The positioning component 5 includes a strip base plate 501. Threaded grooves are provided on the opposite sides and upper and lower surfaces of the first protective frame 1 and the second protective frame 2. The strip base plate 501 is fixedly connected to the upper surface of the first protective frame 1 and the second protective frame 2 by two first bolts 502 cooperating with the threaded grooves. A connecting plate 503 is fixedly connected to the upper surface of the strip base plate 501. A strip top plate 504 is fixedly connected to the upper surface of the connecting plate 503. Two second bolts 505 are threadedly connected to the lower surface of the strip top plate 504. By using two first bolts 505 to engage with the threaded grooves around the outer sides of the first protective frame 1 and the second protective frame 2, the strip base plate 501 can be fixed to different surfaces of the first protective frame 1 and the second protective frame 2. At the same time, the second bolts 505 can be used to fix the strip top plate 504 to the inner wall of the wiring harness near the vehicle interior space. In this way, the first protective frame 1 and the second protective frame 2 can fix the wiring harness inside, which can ensure both the electromagnetic interference protection effect on the wiring harness and the stability of the wiring harness inside the vehicle.

[0021] Working principle: First, before installing the wire harness, the first protective frame 1 and the second protective frame 2 are clamped onto the outer surface of the wire harness, with the wire harness positioned between the two first copper foil plates 3. After aligning the conical clamping plate 402 with the snap-fit ​​groove, the conical clamping plate 402 is inserted into the snap-fit ​​groove. The two sides of the conical clamping plate 402 can press against the two angled clamping blocks 406. The two angled clamping blocks 406 can press against the spring 404 through the movable block 405. At this time, the two angled clamping blocks 406 move away from each other until the conical clamping plate 402 disengages from the angled clamping blocks 406. Then, the two springs 404 lose their restraint and generate a reaction force, causing the two angled clamping blocks 406 to move closer together. At this time, the two angled clamping blocks 406 can clamp the conical clamping plate 402, preventing the conical clamping plate 402 from disengaging from the snap-fit ​​groove. Then, the second copper foil plate 409 cooperates with the arc-shaped groove 408 to secure multiple sets of first protective frames 1 and second protective frames 3. The frame 2 is assembled to ensure that the first and second protective frames 1 and 2 can stably enclose the wire harness. When the wire harness needs to be replaced, the two push rods 407 can be moved away from each other, and the two movable blocks 405 can be moved away from each other, thereby causing the two angled locking blocks 406 to disengage from the conical locking plate 402. After the conical locking plate 402 is no longer restricted, it can be pulled out from the locking slot. At this time, the strip base plate 501 is installed on the surface of the first and second protective frames 1 and 2 close to the vehicle interior space using the two first bolts 502. Then, the strip top plate 504 is fixed in the vehicle interior space using the second bolts 505. The wire harness can be enclosed by several first copper foil plates 3 and second copper foil plates 409 to ensure that the wire harness is not affected by electromagnetic interference during normal use, further improving the stability of the wire harness during use.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shielding structure for electromagnetic interference protection of automotive wiring harnesses, comprising a first protective frame (1) and a second protective frame (2), characterized in that: The first protective frame (1) and the second protective frame (2) are provided with semi-circular grooves on their opposite sides. The inner wall of the semi-circular groove is fixedly connected to a first copper foil plate (3). A connecting component (4) is provided on the right side of the first protective frame (1). A positioning component (5) is provided on the upper surface of the first protective frame (1) and the second protective frame (2). The connecting component (4) includes two connecting blocks (401). A conical card plate (402) is fixedly connected to the right side of the connecting block (401). Two snap-fit ​​grooves are provided on the left side of the second protective frame (2). A locking mechanism is provided on the inner wall of the snap-fit ​​groove.

2. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 1, characterized in that: The locking mechanism includes a positioning shaft (403), on the surface of which two springs (404) are sleeved, and two movable blocks (405) are slidably connected to the inner bottom wall of the locking groove.

3. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 2, characterized in that: Both movable blocks (405) are slidably connected to the surface of the positioning shaft (403), and the opposite ends of the two springs (404) overlap with the two movable blocks (405) respectively. The ends of the two springs (404) away from the movable blocks (405) overlap with the front and rear inner walls of the locking groove respectively.

4. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 3, characterized in that: An angled locking block (406) is fixedly connected to the left side of each of the two movable blocks (405). The positions of the two angled locking blocks (406) correspond to the positions of the conical locking plate (402). A push rod (407) is fixedly connected to the right side of each of the two movable blocks (405). A strip hole is opened on the right side of the second protective frame (2) at the position corresponding to the two locking slots.

5. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 4, characterized in that: The positions of the two push rods (407) correspond to the positions of the strip holes, and the right ends of the two push rods (407) extend through the strip holes to the right side of the second protective frame (2).

6. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 1, characterized in that: The front of the first protective frame (1) and the second protective frame (2) are provided with arc-shaped grooves (408), and the back of the first protective frame (1) and the second protective frame (2) are fixedly connected with second copper foil plates (409) that are compatible with the arc-shaped grooves (408).

7. The shielding structure for electromagnetic interference protection of automotive wiring harnesses according to claim 1, characterized in that: The positioning component (5) includes a strip base plate (501). Threaded grooves are provided on the opposite sides and upper and lower surfaces of the first protective frame (1) and the second protective frame (2). The strip base plate (501) is fixedly connected to the upper surface of the first protective frame (1) and the second protective frame (2) by two first bolts (502) in cooperation with the threaded grooves. A connecting plate (503) is fixedly connected to the upper surface of the strip base plate (501). A strip top plate (504) is fixedly connected to the upper surface of the connecting plate (503). Two second bolts (505) are threadedly connected to the lower surface of the strip top plate (504).

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