Dustproof terminal box

Abstract

The utility model relates to the technical field of junction box, the utility model discloses a dustproof junction box, including equipment side wall, box, box door, incoming wire hole, outgoing wire hole and partition, the equipment side wall is opened with mounting port for installing the box, the box is inlayed type box, and inlayed in the mounting port inside of equipment side wall, the open outer edge of box is provided with a circle sealing strip, the box door is installed at the opening of box and is closely combined with sealing strip, the incoming wire hole is opened on the incoming wire side wall of box, is provided with the incoming wire cylinder in the incoming wire hole, is provided with first and second rice character type wire protection ring in the incoming wire cylinder, the outgoing wire hole is set up on the side wall of box away from incoming wire side wall, is provided with the sealing sleeve for fixing and sealing output wire in the outgoing wire hole, the utility model's advantage lies in adopting multiple dustproof measures, has improved the dustproof effect of junction box.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to a dustproof junction box. Background Technology

[0002] Junction boxes are crucial equipment in electrical systems, primarily used for the collection and connection of cables for various power transmission, distribution, control, and protection devices. However, some existing equipment requires a cleanroom environment to operate; direct connection of power lines or junction boxes can allow dust to enter the equipment, affecting its operation.

[0003] For example, Chinese utility model patent CN220458331U discloses a permanent magnet variable frequency high-speed aerator, including a chassis. The chassis base is equipped with an integrated aerator main unit, and the air inlet of the chassis has a specially structured air intake filter. The motor is electrically connected to a control system, which includes a programmable logic controller (PLC), a terminal block, and a frequency converter. The PLC is connected to the motor via the frequency converter. This utility model features high efficiency, energy saving, space saving, high overall reliability, and long service life. However, the junction box of this type of high-speed aerator is often external, or the power cord is directly connected to the equipment chassis. Over time, dust can enter the equipment chassis directly through the power cord connection, affecting the oxygenation quality of the high-speed aerator and shortening its service life.

[0004] Therefore, how to reduce and prevent dust from entering the interior of the high-speed aerator and affecting the service life of the equipment is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a dustproof junction box to improve the dustproof effect of the junction box and ensure the working quality and service life of the equipment.

[0006] To achieve the above objectives, this utility model provides a dustproof junction box, including a device side wall, a box body, a box door, an inlet hole, an outlet hole, and a partition plate. The device side wall has an installation opening for mounting the box body. The box body is an embedded box, fitted inside the installation opening on the device side wall, and a sealing strip is provided around the outer edge of the opening of the box body. The box door is installed at the opening of the box body and tightly fits the sealing strip. The inlet hole is located on the inlet side wall of the box body, and an inlet tube is provided inside the inlet hole. A first cross-shaped protective coil and a second cross-shaped protective coil are provided inside the inlet tube. The outlet hole is located on the side wall of the box body away from the inlet side wall, and a sealing sleeve for fixing and sealing the output wire is provided inside the outlet hole. The partition plate is located inside the box body and separates the inlet hole and outlet hole into different box body areas. A wire-passing hole is provided on the partition plate.

[0007] A fixing sleeve is provided inside the wire passage hole. The outer wall of the fixing sleeve is provided with external threads, and the inner wall of the wire passage hole is provided with internal threads. The fixing sleeve and the wire passage hole are connected by threads. A flexible sealing sheet and a fixing limiting member are provided inside the fixing sleeve. The fixing limiting member is located at the lower end of the fixing sleeve and includes a fixing ring. The fixing ring is fixed at the lower end opening of the fixing sleeve. At least three elastic clips are evenly distributed circumferentially on the inner side of the fixing ring. The elastic clips are located inside the fixing sleeve. One end of the elastic clip is connected to the fixing ring, and the other end is inclined towards the axis of the fixing ring. An elastic hole is opened on the flexible sealing sheet, and the inner wall of the elastic hole is provided with anti-slip texture.

[0008] Preferably, a power switch terminal block is provided inside the enclosure, and the power switch terminal block is located in the area of ​​the partition plate near the outlet hole.

[0009] Preferably, at least three outlet holes are provided, and a sealing sleeve is provided in each outlet hole.

[0010] Preferably, the sealing sleeve includes a cylindrical rubber joint sleeve, the rubber joint sleeve having a through hole with both ends through it along its axis, the outer surface of the rubber joint sleeve having an external thread, and at least two locking nuts for fixing the rubber joint sleeve being provided on the rubber joint sleeve. The rubber joint sleeve is fitted inside the outlet hole and is limited vertically by the two locking nuts.

[0011] Preferably, the inner wall of the through hole is provided with a plurality of spherical protrusions.

[0012] Preferably, the opening of the box body is formed with a stepped groove and the stepped groove is connected to the mounting port. The box door is embedded in the stepped groove. The sealing strip is set at the joint between the stepped groove and the mounting port. Two limiting holes are opened at the bottom of the stepped groove. Two limiting posts that cooperate with the limiting holes are provided at the lower end of the box door. During installation, the two limiting posts are inserted into the limiting holes. A lock is provided at the upper part of the box door.

[0013] Preferably, the lock is a mechanical lock.

[0014] Preferably, a horizontally arranged retaining strip is provided on the inner side of the cabinet door corresponding to the position of the partition plate, and a retaining groove is provided on the retaining strip. The partition plate extends horizontally towards the cabinet door from the side near the cabinet door and is inserted into the retaining groove.

[0015] Preferably, the first and second cross-shaped protective coils are mounted at both ends of the inlet tube, and the preset cuts of the first and second cross-shaped protective coils are staggered.

[0016] Preferably, the flexible sealing sheet is a silicone sealing sheet.

[0017] The dustproof junction box of this utility model, through its embedded design, avoids excessive contact with the external environment. The partition separates the inlet and outlet ports, preventing dust from floating and spreading. Furthermore, the star-shaped protective coil at the inlet port reduces air ingress, while the sealing sleeve at the outlet port further enhances the sealing effect of the junction box. This overall design effectively isolates the junction box from dust, preventing dust from entering the equipment through the power connection points and thus affecting the equipment's operating environment and overall service life.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the overall structure of a dustproof junction box provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a dustproof junction box provided in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the door of a dustproof junction box provided in an embodiment of the present utility model.

[0023] Figure 4 for Figure 2 A cross-sectional view of the structure of AA.

[0024] Figure 5 for Figure 2 A cross-sectional view of the structure of BB.

[0025] Figure 6 This is a main sectional view of the inlet tube in a dustproof junction box provided in an embodiment of the present utility model;

[0026] Figure 7 A front view of the structure of a sealing sleeve in a dustproof junction box provided in an embodiment of this utility model;

[0027] Figure 8 A top view of a sealing sleeve in a dustproof junction box provided in an embodiment of this utility model;

[0028] Figure 9 This is a front sectional view of a fixed sleeve in a dustproof junction box provided in an embodiment of the present utility model.

[0029] The components include: 1. Equipment side wall; 101. Mounting port; 2. Box body; 201. Sealing strip; 202. Cable inlet hole; 2021. Cable inlet tube; 2022. First cross-shaped protective coil; 2023. Second cross-shaped protective coil; 203. Cable outlet hole; 204. Divider plate; 2041. Cable passage hole; 2042. Fixing sleeve; 2043. Flexible sealing sheet; 2044. Fixing ring; 2045. Elastic clip; 2046. Elastic hole; 2047. Anti-slip texture; 205. Sealing sleeve; 2051. Rubber joint sleeve; 2052. Through hole; 2053. Locking nut; 2054. Spherical protrusion; 206. Power switch terminal block; 207. Step groove; 208. Limiting hole; 3. Box door; 301. Limiting post; 302. Lock; 303. Locking strip; 304. Locking groove. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] The core of this utility model is to provide a dustproof junction box to improve the effective load-bearing capacity of the dustproof junction box.

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Example 1:

[0034] Please refer to Figures 1 to 9 This utility model discloses a dustproof junction box, including a side wall 1, a box body 2, a door 3, an inlet hole 202, an outlet hole 203, and a partition plate 204. The equipment in the side wall 1 can be a high-speed aerator or other precision equipment requiring dust protection. The box body 2 is mainly located at the bottom of the side wall 1, which can reduce the length of the power cord and reduce the space occupied inside the equipment. The side wall 1 has an installation opening 101 for installing the box body 2. The box body 2 is an embedded box body 2, embedded inside the installation opening 101 of the side wall 1. The embedded position of the box body 2 is mainly to avoid the box body 2 being exposed outside the equipment, and also to facilitate the output power cord or data cable being directly inside the equipment. The outer edge of the opening of the box body 2 A sealing strip 201 is provided around the edge. The sealing strip 201 is arranged in a rectangular frame structure to match the structure of the opening of the box 2. It can seal the connection between the box 2 and the mounting port 101, and also seal the contact position between the box door 3 and the box 2. The box door 3 is installed at the opening of the box 2 and fits tightly with the sealing strip 201, which increases the sealing between the box door 3 and the box 2 and prevents dust from entering from the joint. The inlet hole 202 is opened at the bottom of the box 2. The bottom of the box 2 is directly welded to the bottom surface of the equipment and the inlet hole 202 is exposed. This allows the inlet hole 202 of the box 2 to directly contact the outside and prevents outside air from directly entering the equipment. An inlet tube 2021 is provided inside the inlet hole 202. A first cross-shaped protective coil 2022 and a second cross-shaped protective coil 2023 are provided inside the inlet tube 2021. The first cross-shaped protective coil 2022 and the second cross-shaped protective coil 2023 are respectively located at the upper and lower ends of the inlet tube 2021. The outlet hole 203 is located at the top of the housing 2. Since the housing 1 is an embedded housing, the outlet hole 203 is directly located at the top of the housing 2. The protruding wire can be directly connected to the power unit inside the equipment without worrying about dust entering. A sealing sleeve 205 is provided inside the outlet hole 203 to fix and seal the output wire. The sealing sleeve 205 increases the sealing between the output power wire and the housing 2, preventing a small amount of dust entering the housing 2 from entering the equipment through the outlet hole 203. A partition plate 204 is provided inside the housing 2 and separates the inlet hole 202 and the outlet hole 203 into different areas of the housing 2. A wire passage hole 2041 is provided on the partition plate 204. The setting of the partition plate 204 further reduces the airflow between the two areas inside the housing 2, reducing the amount of dust entering the wiring area and the periphery of the outlet hole 203.

[0035] like Figure 9 As shown, a fixing sleeve 2042 is provided inside the wire passage hole 2041. The fixing sleeve 2042 is a cylindrical structure with external threads on its outer wall and internal threads on its inner wall. The fixing sleeve 2042 and the wire passage hole 2041 are connected by threads. A flexible sealing sheet 2043 and a fixing limiting member are provided inside the fixing sleeve 2042. The fixing limiting member is located at the lower end of the fixing sleeve 2042 and includes a fixing ring 2044. The fixing ring 2044 is fixed at the lower end opening of the fixing sleeve 2042. At least three elastic clips 2045 are evenly distributed circumferentially on the inner side of the fixing ring 2044. The three elastic clips 2045 are elastic metal sheets and are located on the fixing sleeve 2042. Inside, one end of the elastic card 2045 is connected to the fixing ring 2044, and the other end is inclined towards the axis of the fixing ring 2044. The three elastic cards 2045 form a claw structure, which improves the fixing ability of the power cord. The flexible sealing sheet 2043 has an elastic hole 2046. The peripheral edge of the flexible sealing sheet 2043 is bonded to the inner wall of the fixing sleeve 2042. The inner wall of the elastic hole 2046 is provided with anti-slip texture 2047. The diameter of the elastic hole 2046 is smaller than the diameter of the conventional power cord. When the power cord passes through the elastic hole 2046, it squeezes the elastic hole 2046 to deform and the two are tightly covered to ensure the sealing. The anti-slip texture 2047 increases the friction between the power cord and the elastic hole 2046.

[0036] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 2 As shown, a power switch terminal block 206 is provided inside the housing 2. The power switch terminal block 206 is located in the area of ​​the partition plate 204 near the outlet hole 203.

[0037] The power switch terminal block 206 is located in the area of ​​the partition plate 204 near the outlet hole 203, which facilitates separation from the inlet hole 202 area and reduces the impact of dust on the power switch terminal block 206.

[0038] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 1 and Figure 2 As shown, there are three outlet holes 203, and a sealing sleeve 205 is provided in each outlet hole 203. According to the power connection output, three power cables extend from the three outlet holes 203 and are fixed by the sealing sleeve 205.

[0039] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 7 and Figure 8As shown, the sealing sleeve 205 includes a cylindrical rubber connector sleeve 2051. The rubber connector sleeve 2051 is made of hard rubber, but it still has the ability to deform under external force. The rubber connector sleeve 2051 has a through hole 2052 with both ends through it along its axis. The power cord extends out from the through hole 2052. The outer surface of the rubber connector sleeve 2051 is provided with external threads. At least two locking nuts 2053 are provided on the rubber connector sleeve 2051 for fixing the rubber connector sleeve 2051. The locking nuts 2053 are connected to the external threads by threads. The two locking nuts 2053 are respectively located inside and outside the housing 2, and are close to the inner and outer surfaces of the housing 2. The rubber connector sleeve 2051 is fitted into the cable outlet hole 203 and fixed by the upper and lower limits of the two locking nuts 2053.

[0040] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 8 As shown, a number of spherical protrusions 2054 are provided on the inner wall of the through hole 2052. The spherical protrusions 2054 increase the friction between the wire and the through hole 2052. When the rubber joint sleeve 2051 is squeezed by external force, the spherical protrusions 2054 deform and come into close contact with the wire, increasing the friction and ensuring the sealing.

[0041] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 2 As shown, a stepped groove 207 is formed at the opening of the housing 2, and this stepped groove 207 is connected to the mounting port 101. The door 3 is embedded in the stepped groove 207. After the door 3 is embedded in the stepped groove 207, the surface of the door 3 is flush with the surface of the equipment side wall 1, ensuring harmony, reducing the generation of protruding exposed parts, and avoiding dust accumulation. The sealing strip 201 is set at the joint between the stepped groove 207 and the mounting port 101. This setting increases the connection between the stepped groove 207 and the mounting port 101. For sealing at the joint, two limiting holes 208 are provided at the bottom of the stepped groove 207. Two limiting posts 301 that cooperate with the limiting holes 208 are provided at the lower end of the door 3. During installation, the two limiting posts 301 are inserted into the limiting holes 208. A lock 302 is provided at the upper part of the door 3. The setting of the limiting holes 208 and the limiting posts 301 not only helps the door 3 to be quickly positioned, but also plays a limiting role. Together with the lock 302, the door 3 is fixed at the stepped groove 207.

[0042] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 1 and Figure 3 As shown, lock 302 is a mechanical lock. This mechanical lock typically uses a rotary latch.

[0043] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 3As shown, the partition 204 is horizontally positioned, and a horizontally positioned retaining strip 303 is provided on the inner side of the door 3 corresponding to the position of the partition 204. The retaining strip 303 has a slot 304. The partition 204 extends horizontally towards the door 3 from the side closest to the door and engages with the slot 304. The retaining strip 303 and slot 304 are primarily designed to address the dust flow problem caused by the gap between the door 3 and the partition 204, reducing airflow and minimizing dust entry into the upper space of the partition 204.

[0044] In another embodiment of this utility model, based on embodiment 1, the flexible sealing sheet 2043 is made of silicone. The silicone material is soft and has a certain elasticity, which facilitates the elastic expansion and contraction of the elastic hole 2046. At the same time, it has stronger wear resistance and improves service life.

[0045] In another embodiment of this utility model, based on embodiment 1, as follows: Figure 6 As shown, the first star-shaped protective coil 2022 and the second star-shaped protective coil 2023 are secured at both ends of the inlet tube 2021. The preset cuts of the first star-shaped protective coil 2022 and the second star-shaped protective coil 2023 are staggered. The arrangement of the first star-shaped protective coil 2022 and the second star-shaped protective coil 2023 creates a certain airflow buffer space, preventing external air from directly entering the housing 2. Furthermore, the staggered preset cuts of the first star-shaped protective coil 2022 and the second star-shaped protective coil 2023 reduce direct air convection.

[0046] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0052] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dustproof junction box, characterized in that, include: Equipment side wall (1), the equipment side wall (1) is provided with an installation port (101) for installing the box (2); The box (2) is an embedded box (2) and is embedded in the mounting port (101) of the side wall (1) of the equipment. A sealing strip (201) is provided on the outer edge of the opening of the box (2). Box door (3), said box door (3) is installed at the opening of the box body (2) and is tightly fitted with the sealing strip (201); The inlet hole (202) is located on the inlet side wall of the housing (2). The inlet hole (202) is provided with an inlet tube (2021). The inlet tube (2021) is provided with a first cross-shaped protective coil (2022) and a second cross-shaped protective coil (2023). Outlet hole (203), the outlet hole (203) is provided on the side wall of the housing (2) away from the inlet side wall, and a sealing sleeve (205) for fixing and sealing the output wire is provided in the outlet hole (203); A partition plate (204) is provided inside the housing (2) and separates the inlet hole (202) and the outlet hole (203) into different areas of the housing (2). A wire passage hole (2041) is provided on the partition plate (204). A fixing sleeve (2042) is provided inside the wire passage hole (2041). The outer wall of the fixing sleeve (2042) is provided with external threads, and the inner wall of the wire passage hole (2041) is provided with internal threads. The fixing sleeve (2042) and the wire passage hole (2041) are connected by threads. A flexible sealing sheet (2043) and a fixing limiting member are provided inside the fixing sleeve (2042). The fixing limiting member is located at the lower end of the fixing sleeve (2042) and includes a fixing ring (2044). Fixed at the lower opening of the fixing sleeve (2042), at least three elastic cards (2045) are evenly distributed circumferentially on the inner side of the fixing ring (2044). The elastic cards (2045) are located inside the fixing sleeve (2042). One end of the elastic card (2045) is connected to the fixing ring (2044), and the other end is inclined towards the axis of the fixing ring (2044). The flexible sealing sheet (2043) has an elastic hole (2046), and the inner wall of the elastic hole (2046) is provided with anti-slip texture (2047).

2. The dustproof junction box as described in claim 1, characterized in that, The housing (2) is equipped with a power switch terminal block (206), which is located in the area of ​​the partition plate (204) near the outlet hole (203).

3. The dustproof junction box as described in claim 2, characterized in that, At least three outlet holes (203) are provided, and a sealing sleeve (205) is provided in each outlet hole (203).

4. The dustproof junction box as described in claim 3, characterized in that, The sealing sleeve (205) includes a cylindrical rubber joint sleeve (2051). The rubber joint sleeve (2051) has a through hole (2052) with both ends through it along its axis. The outer surface of the rubber joint sleeve (2051) is provided with external threads. The rubber joint sleeve (2051) is provided with at least two locking nuts (2053) for fixing the rubber joint sleeve (2051). The rubber joint sleeve (2051) is sleeved in the outlet hole (203) and is limited vertically by the two locking nuts (2053).

5. The dustproof junction box as described in claim 4, characterized in that, The inner wall of the through hole (2052) is provided with a number of spherical protrusions (2054).

6. The dustproof junction box as described in claim 1, characterized in that, The opening of the box body (2) is formed with a stepped groove (207) and the stepped groove (207) is connected to the mounting port (101). The box door (3) is embedded in the stepped groove (207). The sealing strip (201) is set at the joint between the stepped groove (207) and the mounting port (101). Two limiting holes (208) are opened at the bottom of the stepped groove (207). Two limiting posts (301) that cooperate with the limiting holes (208) are provided at the lower end of the box door (3). During installation, the two limiting posts (301) are inserted into the limiting holes (208). A lock (302) is provided at the upper part of the box door (3).

7. The dustproof junction box as described in claim 6, characterized in that, The lock (302) is a mechanical lock.

8. The dustproof junction box as described in claim 6, characterized in that, The partition plate (204) is horizontally arranged, and a horizontally arranged retaining strip (303) is provided on the inner side of the box door (3) corresponding to the position of the partition plate (204). A retaining groove (304) is provided on the retaining strip (303). The partition plate (204) extends horizontally towards the box door (3) from the side near the box door (3) and is inserted into the retaining groove (304).

9. The dustproof junction box as described in claim 1, characterized in that, The first cross-shaped protective coil (2022) and the second cross-shaped protective coil (2023) are mounted at both ends of the inlet tube (2021), and the preset cut of the first cross-shaped protective coil (2022) and the preset cut of the second cross-shaped protective coil (2023) are misaligned.

10. The dustproof junction box as described in claim 1, characterized in that, The flexible sealing sheet is a silicone sealing sheet.

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