A waterproof box assembly and a waterproof structure of a fan group

Abstract

The utility model provides a waterproof box assembly and fan group waterproof structure, including waterproof box, the PCB board of containing in waterproof box, install the cable on the PCB board, waterproof box cable pressing plate for pressing the cable and the potting adhesive for sealing waterproof box, the utility model discloses waterproof box assembly, including waterproof box, the PCB board of containing in waterproof box, install the cable on the PCB board, waterproof box cable pressing plate for pressing the cable and the potting adhesive for sealing waterproof box, because waterproof box cable pressing plate presses the cable, can prevent cable swing and pull and drag, thereby avoided and formed the gap before potting adhesive, therefore can assist sealed cable, enhance waterproof performance.

Description

Technical Field

[0001] This utility model relates to the field of chargers, and more specifically, to a waterproof box assembly and a waterproof structure for a fan assembly. Background Technology

[0002] For chargers used outdoors, their cooling fans need to be waterproof and dustproof. Chargers requiring high-efficiency cooling need multiple fan arrays to provide greater airflow. When fans are connected in parallel, waterproof boxes are needed to secure the cables, but these boxes typically rely solely on internal potting compound to hold the cables in place. During installation and use, the cables will swing and pull, creating gaps between the cable and the potting compound, potentially leading to water immersion. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a waterproof box assembly and a waterproof structure for a fan assembly, which can help seal cables and enhance waterproof performance, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a waterproof box assembly, including a waterproof box, a PCB board housed in the waterproof box, cables mounted on the PCB board, a waterproof box cable clamping plate for pressing the cables, and potting compound for sealing the waterproof box.

[0005] In the waterproof box assembly of this utility model, the waterproof box wire pressing plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction. The first side of the base plate and the second side of the base plate are parallel to each other. The first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other.

[0006] In the waterproof box assembly of this utility model, the substrate is an I-shaped substrate, the first side plate is disposed on the first side waist of the I-shaped substrate, and the first side plate is disposed on the second side waist of the I-shaped substrate.

[0007] In the waterproof box assembly described in this utility model, the first side plate includes a first arc-shaped transition portion and a first vertical fixing portion; the first end of the first arc-shaped transition portion abuts against the first side waist of the I-shaped base plate, and the second end abuts against the first end of the first vertical fixing portion;

[0008] The second side plate includes a second arc-shaped transition portion and a second vertical fixing portion; the first end of the second arc-shaped transition portion abuts against the second side waist of the I-shaped substrate, and the second end abuts against the first end of the second vertical fixing portion.

[0009] In the waterproof box assembly of this utility model, a first clamping post is provided on the side of the first vertical fixing part facing the second vertical fixing part, and a second clamping post is provided on the side of the second vertical fixing part facing the first vertical fixing part; the first mounting hole passes through the first clamping post, and the second mounting hole passes through the second clamping post.

[0010] In the waterproof box assembly of this utility model, a first gap is provided between the first arc-shaped transition portion and the first horizontal side of the I-shaped substrate, a second gap is provided between the first arc-shaped transition portion and the second horizontal side of the I-shaped substrate, a third gap is provided between the second arc-shaped transition portion and the first horizontal side of the I-shaped substrate, and a fourth gap is provided between the second arc-shaped transition portion and the second horizontal side of the I-shaped substrate; the second horizontal side is shorter than the first horizontal side.

[0011] In the waterproof box assembly described in this utility model, the cable includes a cable end and a connecting wire;

[0012] The waterproof box has a third mounting hole and a fourth mounting hole facing each other on its first and second side walls.

[0013] When the waterproof box cable clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the first side plate and the second side plate clamp the cable end, and the base plate presses the cable end;

[0014] A connecting wire fixing groove for fixing the connecting wire is provided on the third side wall of the waterproof box.

[0015] In the waterproof box assembly of this utility model, a first limiting groove is provided on the top edge of the first side wall of the waterproof box, and a second limiting groove is provided on the top edge of the second side wall of the waterproof box; the distance between the first limiting groove and the second limiting groove matches the length of the first horizontal side of the I-shaped substrate, and the length of the second horizontal side of the I-shaped substrate matches the width of the waterproof box.

[0016] When the waterproof box wire clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the second horizontal edge of the I-shaped base plate engages between the first side wall and the second side wall of the waterproof box, and the first horizontal edge of the I-shaped base plate engages between the first limiting groove and the second limiting groove.

[0017] The waterproof box assembly of this utility model includes a waterproof box, a PCB board housed in the waterproof box, a cable mounted on the PCB board, a waterproof box cable clamping plate for pressing the cable, and a potting compound for sealing the waterproof box. Because the waterproof box cable clamping plate presses the cable, it can prevent the cable from swinging and pulling, thereby avoiding the formation of gaps between the cable and the potting compound, thus assisting in sealing the cable and enhancing waterproof performance.

[0018] Another technical solution adopted by this utility model to solve its technical problem is: to construct a waterproof structure for a fan assembly, including a fan bracket, a plurality of fans housed in the fan bracket, a PCB board, a waterproof box for mounting the PCB board, a waterproof box wire clamping plate, potting compound for sealing the waterproof box, and a waterproof cavity for mounting the waterproof box.

[0019] Each fan is equipped with a fan plug, and the PCB board is provided with multiple sockets, each socket corresponding to a fan plug. The PCB board is further provided with cables that electrically connect each socket to an external power source; the cables include cable ends and connecting wires.

[0020] The waterproof box wire clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, wherein the first side of the base plate and the second side of the base plate are parallel to each other; the first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other.

[0021] The waterproof box has a third mounting hole and a fourth mounting hole facing each other on its first and second side walls.

[0022] When the waterproof box cable clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the first side plate and the second side plate clamp the cable end, and the base plate presses the cable end;

[0023] A connecting wire fixing groove for fixing the connecting wire is provided on the third side wall of the waterproof box.

[0024] In the waterproof structure of the fan assembly described in this utility model, the substrate is an I-shaped substrate, the first side plate is disposed on the first side waist of the I-shaped substrate, and the first side plate is disposed on the second side waist of the I-shaped substrate.

[0025] A first limiting groove is provided on the top edge of the first side wall of the waterproof box, and a second limiting groove is provided on the top edge of the second side wall of the waterproof box; the distance between the first limiting groove and the second limiting groove matches the length of the first horizontal side of the I-shaped substrate, and the length of the second horizontal side of the I-shaped substrate matches the width of the waterproof box.

[0026] When the waterproof box wire clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the second horizontal edge of the I-shaped base plate engages between the first side wall and the second side wall of the waterproof box, and the first horizontal edge of the I-shaped base plate engages between the first limiting groove and the second limiting groove.

[0027] This utility model discloses a waterproof fan assembly structure, comprising a fan bracket, multiple fans housed within the fan bracket, a PCB board, a waterproof box for mounting the PCB board, a waterproof box cable clamping plate for clamping the cables, potting compound for sealing the waterproof box, and a waterproof cavity for mounting the waterproof box. The cables include cable ends and connecting wires. The waterproof box cable clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, the first side and the second side of the base plate being parallel to each other. The first side plate and the second side plate are provided with first mounting holes and second mounting holes facing each other. When the waterproof box cable clamping plate is mounted onto the waterproof box through the first mounting holes and the second mounting holes and potting compound is applied, the first side plate and the second side plate clamp the cable ends, and the base plate presses down on the cable ends, thus assisting in sealing the cables and enhancing waterproof performance. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0029] Figure 1 This is a structural schematic diagram of a preferred embodiment of the waterproof box wire clamping plate of this utility model from a first angle;

[0030] Figure 2 This is a second-angle structural schematic diagram of a preferred embodiment of the waterproof box wire clamping plate of this utility model;

[0031] Figure 3 This is a side view of a preferred embodiment of the waterproof box wire clamping plate of this utility model;

[0032] Figure 4 This is an exploded structural diagram of a preferred embodiment of the waterproof box assembly of this utility model;

[0033] Figure 5This is a schematic diagram of the installation structure of a preferred embodiment of the waterproof box assembly of this utility model;

[0034] Figure 6 This is an exploded structural diagram of a preferred embodiment of the waterproof structure of the fan assembly of this utility model;

[0035] Figure 7 This is an exploded structural diagram of another preferred embodiment of the waterproof structure of the fan assembly of this utility model;

[0036] Figure 8 This is a schematic diagram of the installation structure of a preferred embodiment of the waterproof fan assembly structure of this utility model. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] Figure 1 This is a structural schematic diagram of a preferred embodiment of the waterproof box wire clamping plate of this utility model from a first angle. Figure 2 This is a second-angle structural schematic diagram of a preferred embodiment of the waterproof box wire clamping plate of this utility model. Figure 3 This is a side view of a preferred embodiment of the waterproof box wire clamping plate of this utility model. Figure 4 This is an exploded structural diagram of a preferred embodiment of the waterproof box assembly of this utility model. Figure 5 This is a schematic diagram of the installation structure of a preferred embodiment of the waterproof box assembly of this utility model.

[0039] like Figures 1-5 As shown, this utility model further discloses a waterproof box assembly, including a waterproof box 200, a PCB board 300 housed in the waterproof box 200, a cable 400 mounted on the PCB board 300, a waterproof box cable clamping plate 100 for clamping the cable 400, and a potting compound for sealing the waterproof box 200.

[0040] The waterproof box assembly of this utility model includes a waterproof box, a PCB board housed in the waterproof box, a cable mounted on the PCB board, a waterproof box cable clamping plate for pressing the cable, and a potting compound for sealing the waterproof box. Because the waterproof box cable clamping plate presses the cable, it can prevent the cable from swinging and pulling, thereby avoiding the formation of gaps between the cable and the potting compound, thus assisting in sealing the cable and enhancing waterproof performance.

[0041] like Figures 1-5As shown, in a further preferred embodiment of this utility model, the waterproof cable clamping plate 100 includes a base plate 110, a first side plate 120 extending from a first side of the base plate 110 in a first direction, and a second side plate 130 extending from a second side of the base plate 110 in the first direction. The first side and the second side of the base plate 110 are parallel to each other. The first side plate 120 and the second side plate 130 are provided with a first mounting hole 125 and a second mounting hole 135 facing each other. The cable 400 includes a cable end 410 and a connecting wire 420.

[0042] The waterproof box 200 is a rectangular structure with an opening on one side. A third mounting hole 213 and a fourth mounting hole are respectively provided opposite each other on the first sidewall 210 and the second sidewall 220 of the waterproof box 200. When the waterproof box cable clamping plate 100 is fixed to the waterproof box 200 through the first mounting hole 125, the second mounting hole 135, the third mounting hole 213, and the fourth mounting hole, the first sidewall 120 and the second sidewall 130 clamp the cable end 410, and the base plate 110 presses the cable end 410. A connecting wire fixing groove 231 for fixing the connecting wire 420 is provided on the third sidewall 230 of the waterproof box 200. The connecting wire fixing groove 231 is preferably arc-shaped to match the shape of the connecting wire 420.

[0043] like Figures 1-5 As shown, the substrate 110 is an I-shaped substrate 110, the first side plate 120 is disposed on the first side waist 111 of the I-shaped substrate 110, and the first side plate 120 is disposed on the second side waist 112 of the I-shaped substrate 110; the top edge of the first side wall 210 of the waterproof box 200 is provided with a first limiting groove 211, and the top edge of the second side wall 220 of the waterproof box 200 is provided with a second limiting groove 221; the first limiting groove 211 and the second limiting groove 221 are preferably rectangular grooves and their dimensions match the width of the first horizontal side 113 of the I-shaped substrate 110. The distance between the first limiting groove 211 and the second limiting groove 221 matches the length of the first horizontal side 113 of the I-shaped substrate 110, and the length of the second horizontal side 114 of the I-shaped substrate 110 matches the width of the waterproof box 200. When the waterproof box wire clamping plate 100 is fixed to the waterproof box 200 through the first mounting hole 125, the second mounting hole 135, the third mounting hole 213 and the fourth mounting hole, the second horizontal side 114 of the I-shaped substrate 110 engages between the first side wall 210 and the second side wall 220 of the waterproof box 200, and the first horizontal side 113 of the I-shaped substrate 110 engages between the first limiting groove 211 and the second limiting groove 221.

[0044] like Figures 1-3 As shown, the first side plate 120 includes a first arc-shaped transition portion 121 and a first vertical fixing portion 122; the first end of the first arc-shaped transition portion 121 abuts against the first side waist 111 of the I-shaped substrate 110, and the second end abuts against the first end of the first vertical fixing portion 122; the second side plate 130 includes a second arc-shaped transition portion 131 and a second vertical fixing portion 132; the first end of the second arc-shaped transition portion 131 abuts against the second side waist 112 of the I-shaped substrate 110, and the second end abuts against the first end of the second vertical fixing portion 132; a first clamping post 123 is provided on the side of the first vertical fixing portion 122 facing the second vertical fixing portion 132; a first mounting hole 125 passes through the first clamping post 123, and a second mounting hole 135 passes through the second clamping post 133. The design of the first arc-shaped transition portion 121 and the second arc-shaped transition portion 131 makes the connection between the I-shaped substrate 110 and the first side plate 120 and the second side plate 130 smoother, which is not only easier to manufacture, but also prevents damage caused by collisions. The design of the first clamping post 123 and the second clamping post 133 can further assist in clamping the cable end, thus helping to seal the cable and enhance waterproof performance. Of course, in other preferred embodiments of this utility model, substrates 110 of other shapes can also be selected, all of which fall within the protection scope of this utility model.

[0045] Further as Figures 1-3 As shown, in a preferred embodiment of this utility model, a gap 140 is provided between the first arc-shaped transition portion 121 and the first horizontal edge 113 of the I-shaped substrate 110, a gap 140 is provided between the first arc-shaped transition portion 121 and the second horizontal edge 114 of the I-shaped substrate 110, a gap 140 is provided between the second arc-shaped transition portion 131 and the first horizontal edge 113 of the I-shaped substrate 110, and a gap 140 is provided between the second arc-shaped transition portion 131 and the second horizontal edge 114 of the I-shaped substrate 110. Preferably, the second horizontal edge 114 of the I-shaped substrate 110 is slightly shorter than the first horizontal edge 113, although they can also be equal. After the waterproof box cable clamping plate is installed on the waterproof box through the first mounting hole and the second mounting hole, potting compound can be poured in through these gaps.

[0046] The waterproof box assembly of this utility model includes a waterproof box, a PCB board housed in the waterproof box, a cable mounted on the PCB board, a waterproof box cable clamping plate for pressing the cable, and a potting compound for sealing the waterproof box. The cable includes a cable end and a connecting wire. The waterproof box cable clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, the first side and the second side of the base plate being parallel to each other. The first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other. When the waterproof box cable clamping plate is installed on the waterproof box through the first mounting hole and the second mounting hole and potting compound is applied, the first side plate and the second side plate clamp the cable end, and the base plate presses the cable end, thus assisting in sealing the cable and enhancing waterproof performance.

[0047] Figure 6 This is an exploded structural diagram of a preferred embodiment of the waterproof structure of the fan assembly of this utility model. Figure 7 This is an exploded structural diagram of another preferred embodiment of the waterproof structure of the fan assembly of this utility model. Figure 8 This is a schematic diagram of the installation structure of a preferred embodiment of the waterproof fan assembly structure of this utility model. (See diagram below.) Figures 6-8 As shown, the waterproof structure of the fan assembly includes a fan bracket 10, multiple fans 20 housed in the fan bracket 10, a PCB board 300, a waterproof box 200 for mounting the PCB board 300, a waterproof box cable clamping plate 100, potting compound for sealing the waterproof box 200, and a waterproof cavity 30 for mounting the waterproof box 200. Each fan 20 is provided with a fan plug 21, and the PCB board 300 is provided with multiple sockets 310, each socket 310 corresponding to one fan plug 21. In this way, multiple fan plugs 21 can be plugged into different sockets on the same PCB board 300. The PCB board 300 is further provided with cables 400, which electrically connect each socket 310 to an external power source; the cables 400 include cable ends 410 and connecting wires 420. Here, PCB fixing screws 70 can be used to mount the PCB board to the fan bracket, and the fans can be mounted to the fan bracket with screws 80.

[0048] The waterproof box cable clamping plate 100 includes a base plate 110, a first side plate 120 extending from a first side of the base plate 110 in a first direction, and a second side plate 130 extending from a second side of the base plate 110 in a first direction. The first side and the second side of the base plate 110 are parallel to each other. The first side plate 120 and the second side plate 130 are provided with a first mounting hole 125 and a second mounting hole 135 facing each other. The first side wall 210 and the second side wall 220 of the waterproof box 200 are... The third mounting hole 213 and the fourth mounting hole are arranged opposite each other; when the waterproof box cable clamping plate 100 is fixed to the waterproof box 200 through the first mounting hole 125, the second mounting hole 135, the third mounting hole 213 and the fourth mounting hole, the first side plate 120 and the second side plate 130 clamp the cable end 410, and the base plate 110 presses the cable end 410; the third side wall 230 of the waterproof box 200 is provided with a connecting wire fixing groove 231 for fixing the connecting wire 420. Figures 1-5 As shown, the substrate 110 is an I-shaped substrate 110. The first side plate 120 is disposed on the first side waist 111 of the I-shaped substrate 110, and the first side plate 120 is disposed on the second side waist 112 of the I-shaped substrate 110. The top edge of the first side wall 210 of the waterproof box 200 is provided with a first limiting groove 211, and the top edge of the second side wall 220 of the waterproof box 200 is provided with a second limiting groove 221. The distance between the first limiting groove 211 and the second limiting groove 221 matches the length of the first horizontal side 113 of the I-shaped substrate 110. The length of the second horizontal side 114 of the I-shaped substrate 110 matches the width of the waterproof box 200; when the waterproof box wire clamping plate 100 is fixed to the waterproof box 200 through the first mounting hole 125, the second mounting hole 135, the third mounting hole 213 and the fourth mounting hole, the second horizontal side 114 of the I-shaped substrate 110 is engaged between the first side wall 210 and the second side wall 220 of the waterproof box 200, and the first horizontal side 113 of the I-shaped substrate 110 is engaged between the first limiting groove 211 and the second limiting groove 221.

[0049] like Figures 1-3As shown, the first side plate 120 includes a first arc-shaped transition portion 121 and a first vertical fixing portion 122; the first end of the first arc-shaped transition portion 121 abuts against the first side waist 111 of the I-shaped substrate 110, and the second end abuts against the first end of the first vertical fixing portion 122; the second side plate 130 includes a second arc-shaped transition portion 131 and a second vertical fixing portion 132; the first end of the second arc-shaped transition portion 131 abuts against the second side waist 112 of the I-shaped substrate 110, and the second end abuts against the first end of the second vertical fixing portion 132; a first clamping post 123 is provided on the side of the first vertical fixing portion 122 opposite to the second vertical fixing portion 132, the first vertical fixing portion 12... A first clamping post 123 is provided on the side of the second vertical fixing part 132 facing the second clamping post 133; the first mounting hole 125 passes through the first clamping post 123, and the second mounting hole 135 passes through the second clamping post 133; a gap 140 is provided between the first arc-shaped transition part 121 and the first horizontal edge 113 of the I-shaped substrate 110, a gap 140 is provided between the first arc-shaped transition part 121 and the second horizontal edge 114 of the I-shaped substrate 110, a gap 140 is provided between the second arc-shaped transition part 131 and the first horizontal edge 113 of the I-shaped substrate 110, and a gap 140 is provided between the second arc-shaped transition part 131 and the second horizontal edge 114 of the I-shaped substrate 110.

[0050] This utility model discloses a waterproof structure for a fan assembly, comprising a waterproof box, a PCB board housed within the waterproof box, cables mounted on the PCB board, a waterproof box cable clamping plate for pressing the cables, and potting compound for sealing the waterproof box. The cables include cable ends and connecting wires. The waterproof box cable clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, the first side and the second side of the base plate being parallel to each other. The first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other. When the waterproof box cable clamping plate is mounted onto the waterproof box through the first mounting hole and the second mounting hole and potting compound is applied, the first side plate and the second side plate clamp the cable ends, and the base plate presses the cable ends, thus assisting in sealing the cables and enhancing waterproof performance.

[0051] Furthermore, by connecting multiple fan plugs to a single PCB board, placing the entire PCB board inside a waterproof box, and then installing it into a waterproof cavity, a modular waterproof fan assembly wiring system can be achieved, allowing for rapid installation. There's no need to individually waterproof the connectors by soldering wires. During installation, first use PCB mounting screws 70 to mount the PCB board onto the fan bracket, then mount the fan onto the bracket using screws 80, connect the fan plug to the socket, and finally use the waterproof box cable clamp to tighten the cable ends and apply potting compound to achieve a waterproof seal for the entire fan assembly.

[0052] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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. A waterproof case assembly, characterized by, The device includes a waterproof box, a PCB board housed in the waterproof box, cables mounted on the PCB board, a waterproof box cable clamping plate for clamping the cables, and potting compound for sealing the waterproof box.

2. The waterproof case assembly of claim 1, wherein, The waterproof box wire clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, wherein the first side of the base plate and the second side of the base plate are parallel to each other; the first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other.

3. The waterproof case assembly of claim 2, wherein, The substrate is an I-shaped substrate, and the first side plate is disposed on the first side waist of the I-shaped substrate and the second side waist of the I-shaped substrate.

4. The waterproof case assembly of claim 3, wherein, The first side plate includes a first arc-shaped transition portion and a first vertical fixing portion; the first end of the first arc-shaped transition portion abuts against the first side waist of the I-shaped substrate, and the second end abuts against the first end of the first vertical fixing portion; The second side plate includes a second arc-shaped transition portion and a second vertical fixing portion; the first end of the second arc-shaped transition portion abuts against the second side waist of the I-shaped substrate, and the second end abuts against the first end of the second vertical fixing portion.

5. The waterproof case assembly of claim 4, wherein, A first clamping post is provided on the side of the first vertical fixing part facing the second vertical fixing part, and a second clamping post is provided on the side of the second vertical fixing part facing the first vertical fixing part; the first mounting hole passes through the first clamping post, and the second mounting hole passes through the second clamping post.

6. The waterproof box assembly of claim 5, wherein, A first gap is provided between the first arc-shaped transition portion and the first horizontal side of the I-shaped substrate; a second gap is provided between the first arc-shaped transition portion and the second horizontal side of the I-shaped substrate; a third gap is provided between the second arc-shaped transition portion and the first horizontal side of the I-shaped substrate; and a fourth gap is provided between the second arc-shaped transition portion and the second horizontal side of the I-shaped substrate; the second horizontal side is shorter than the first horizontal side.

7. The waterproof box assembly of claim 3, wherein, The cable includes cable ends and connecting wires; The waterproof box has a third mounting hole and a fourth mounting hole facing each other on its first and second side walls. When the waterproof box cable clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the first side plate and the second side plate clamp the cable end, and the base plate presses the cable end; A connecting wire fixing groove for fixing the connecting wire is provided on the third side wall of the waterproof box.

8. The waterproof box assembly according to claim 7, characterized in that, A first limiting groove is provided on the top edge of the first side wall of the waterproof box, and a second limiting groove is provided on the top edge of the second side wall of the waterproof box; the distance between the first limiting groove and the second limiting groove matches the length of the first horizontal side of the I-shaped substrate, and the length of the second horizontal side of the I-shaped substrate matches the width of the waterproof box. When the waterproof box wire clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the second horizontal edge of the I-shaped base plate engages between the first side wall and the second side wall of the waterproof box, and the first horizontal edge of the I-shaped base plate engages between the first limiting groove and the second limiting groove.

9. A waterproof structure of a fan group, characterized by, The device includes a fan bracket, a plurality of fans housed in the fan bracket, a PCB board, a waterproof box for mounting the PCB board, a waterproof box wire clamping plate, potting compound for sealing the waterproof box, and a waterproof cavity for mounting the waterproof box. Each fan is equipped with a fan plug, and the PCB board is provided with multiple sockets, each socket corresponding to a fan plug. The PCB board is further provided with cables that electrically connect each socket to an external power source; the cables include cable ends and connecting wires. The waterproof box wire clamping plate includes a base plate, a first side plate extending from a first side of the base plate in a first direction, and a second side plate extending from a second side of the base plate in a first direction, wherein the first side of the base plate and the second side of the base plate are parallel to each other; the first side plate and the second side plate are provided with a first mounting hole and a second mounting hole facing each other. The waterproof box has a third mounting hole and a fourth mounting hole facing each other on its first and second side walls. When the waterproof box cable clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the first side plate and the second side plate clamp the cable end, and the base plate presses the cable end; A connecting wire fixing groove for fixing the connecting wire is provided on the third side wall of the waterproof box.

10. The waterproof structure of the fan group according to claim 9, wherein The substrate is an I-shaped substrate, the first side plate is disposed on the first side waist of the I-shaped substrate, and the first side plate is disposed on the second side waist of the I-shaped substrate; A first limiting groove is provided on the top edge of the first side wall of the waterproof box, and a second limiting groove is provided on the top edge of the second side wall of the waterproof box; the distance between the first limiting groove and the second limiting groove matches the length of the first horizontal side of the I-shaped substrate, and the length of the second horizontal side of the I-shaped substrate matches the width of the waterproof box. When the waterproof box wire clamping plate is fixed to the waterproof box through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole, the second horizontal edge of the I-shaped base plate engages between the first side wall and the second side wall of the waterproof box, and the first horizontal edge of the I-shaped base plate engages between the first limiting groove and the second limiting groove.

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