A modular junction box

Abstract

The present invention provides a modular junction box, which belongs to the technical field of copper cable junction communication equipment. It solves the problem that the existing copper cable junction equipment cannot prevent the oxidation or corrosion of the copper core. A modular junction box of the present invention includes a shell, a junction module, a junction seat, a wiring assembly, an oil storage assembly and an insect-proof cover. Among them, when installing the junction box of the present invention, it is necessary to connect the incoming cable with the side of the junction seat close to the oil storage assembly, and seal the connection between the incoming cable and the junction seat through the oil storage assembly, and then connect one end of the outgoing cable with the side of the junction seat close to the wiring assembly, and seal the connection between the outgoing cable and the junction seat through the wiring assembly. In this way, not only the oxidation or corrosion of the end of the copper wire close to the junction seat is reduced, but also insects and ants are prevented from gnawing at the connection between the incoming cable and the junction seat and the connection between the outgoing cable and the junction seat, thereby increasing the service life of the junction box, so that the junction box can work stably.

Description

Technical Field

[0001] The invention belongs to the technical field of copper cable distribution communication equipment and relates to a modular distribution box. Background Art

[0002] A junction box is a junction box for connecting communication cables with tail cables. It is a junction box between a communication cable junction box and an outdoor cable at the user end, such as a metal junction box with publication number CN107017589B, which includes a shell, a wire outlet panel detachably connected to the shell, at least two wire collecting holes are provided on the wire outlet panel, and a crimping assembly corresponding to the wire collecting holes is detachably connected to the shell near the wire collecting holes; a shell cover is movably connected to the shell, and the shell cover can be flipped relative to the shell; a wire distribution plate is detachably connected to the shell, a channel for threading cables is provided in the wire distribution plate, a plurality of wire distribution holes for guiding cables are provided on the wire distribution plate, each of the wire distribution holes is connected to the channel, and each of the wire distribution holes is provided with a wire pressing assembly for guiding the wires in the wire distribution holes A cable distribution assembly, wherein the distribution board is provided with a distribution device for guiding the cables in the distribution assembly. In the distribution process, the above scheme gathers all the copper wires to the middle of the distribution box, and gathers the copper wires to a distribution board through the distribution assembly. Although the above scheme can achieve the distribution function, during the process of assembly and routing or when people repair the distribution box later, the copper wires are gathered to a distribution board through the distribution assembly, which will cause the copper wires to be disordered when people reorganize the copper wires later; secondly, the copper cable in the prior art is directly connected to the distribution assembly without any sealing measures. This will cause the copper core in the copper wire to be oxidized or corroded at the part where the copper core is connected to the distribution assembly, causing the distribution box to fail to work normally. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to provide a modular junction box that can prevent oxidation or corrosion of the copper core.

[0004] The object of the present invention can be achieved through the following technical solutions: A modular junction box, comprising:

[0005] case;

[0006] Multiple branching modules can be detachably connected in the housing, each of the branching modules includes a branching seat, multiple wiring components and an oil storage component corresponding to the wiring components, the wiring components can be detachably connected to the branching seat, and each of the oil storage components can be detachably connected to the branching seat;

[0007] The insect-proof cover is detachably connected to the shell.

[0008] In the above-mentioned modular junction box, the wiring assembly and the oil storage assembly are respectively located on both sides of the junction seat, each of the wiring assemblies includes a plurality of plug-in blocks, and the junction seat is provided with a plurality of wiring shells for clamping corresponding plug-in blocks.

[0009] In the above-mentioned modular junction box, a spring is inserted into each of the wiring shells, and each of the springs passes through the junction seat. The plug block is provided with an inner pin and an outer pin, and the outer pin is inserted into the interior of the corresponding wiring shell, and one end of the spring is inserted between the inner pin and the outer pin.

[0010] In the above-mentioned modular junction box, a U-shaped wire clamping plate is provided on the inner pin, and a through hole is provided between the wire clamping plate and the inner pin. Each wiring shell is provided with a pair of clamping plates, and there is a gap between the two clamping plates. Both clamping plates are inserted into the corresponding through holes.

[0011] In the above-mentioned modular junction box, each of the external pins is provided with a clamping pin that is clamped with the inside of the wiring shell, and each of the external pins is provided with a positioning block, the positioning block abuts against the wiring shell, and liquid polyisobutylene is filled between the wiring shell and the plug block.

[0012] In the above-mentioned modular junction box, each of the oil storage components includes an oil storage shell and a push plate, the push plate is movably installed in the oil storage shell, each of the oil storage shells is buckled with the junction seat, the other end of the spring is inserted into the oil storage shell, and the oil storage shell is filled with liquid polyisobutylene.

[0013] In the above-mentioned modular junction box, a plurality of through grooves are opened on one side of the oil storage shell, a plurality of push blocks are provided on one side of the push plate, the push blocks are movable through the oil storage shell, extension ears are provided at both ends of the oil storage shell, and each of the extension ears is provided with a hook tongue that is buckled with the junction seat.

[0014] In the above-mentioned modular junction box, each of the junction seats is provided with a clamping ring and a limit strip at both ends, and the shell is used to clamp the junction seat with a clamping plate; a limit groove for clamping the corresponding limit strip is provided between two adjacent clamping plates, and each clamping plate is provided with a clamping hole for clamping the clamping ring.

[0015] In the above-mentioned modular junction box, the insect-proof cover is provided with a plurality of external wire holes, the shell is provided with internal wire holes corresponding to the external wire holes, the inside of the insect-proof cover is provided with insect-proof cotton near the external wire holes, and the insect-proof cotton is provided with cutouts corresponding to the external wire holes.

[0016] In the above-mentioned modular junction box, a fixing plate corresponding to the inner wire hole is provided inside the shell near the inner wire hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Multiple branching modules are detachably installed on the shell, and then the incoming cables and outgoing cables are installed on the corresponding branching modules to realize the modularization of the branching box. In this way, more dense copper wires can be laid in a limited space, and it is also convenient for people to inspect and maintain them later.

[0019] 2. During installation, connect the incoming cable to the side of the branch seat close to the oil storage assembly, and seal the connection between the incoming cable and the branch seat through the oil storage assembly, then connect one end of the outgoing cable to the side of the branch seat close to the wiring assembly, and seal the connection between the outgoing cable and the branch seat through the wiring assembly. In this way, not only the oxidation or corrosion of the end of the copper core close to the branch seat is avoided, but also insects and ants are prevented from gnawing at the connection between the incoming cable and the branch seat, as well as the connection between the outgoing cable and the branch seat, thereby increasing the service life of the junction box so that the junction box can work stably.

[0020] 3. When people connect the outgoing cable to the branching seat, they can press the outgoing cable onto the spring sheet corresponding to the branching seat only through the action of multiple wiring components, without using other tools, which makes it convenient for people to operate.

[0021] 4. When the copper cable passes through the shell, the insect-proof cotton can stick to the surface of the copper cable, so as to prevent external insects (such as mosquitoes or flies, etc.) from entering the inside of the junction box, thereby ensuring that the junction box can be used normally.

[0022] 5. When the oil storage shell is buckled onto the branching seat or there is less liquid polyisobutylene stored in the oil storage shell, people can push the push block into the oil storage shell. Since the push plate is fixedly connected to the push block, the push plate is pushed toward the reed. In this way, the liquid polyisobutylene stored in the oil storage shell can be pushed toward the reed, so that the liquid polyisobutylene can wrap the reed, thereby ensuring that the reed is located at one end of the wiring shell and isolated from the outside air. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention.

[0024] Figure 2 This is the assembly diagram of a single branching module and a housing.

[0025] Figure 3 It is a structural diagram of the branching module.

[0026] Figure 4 This is a structural diagram of the branching module from another perspective.

[0027] Figure 5 It is a structural schematic diagram of the oil storage component.

[0028] Figure 6 It is a structural diagram of the push plate.

[0029] Figure 7 This is an exploded view of the wiring assembly and the breakout block.

[0030] Figure 8 It is an exploded view of the insect-proof cover and the housing.

[0031] Fig. 9 This is a top view of the breakout module.

[0032] Fig.10 yes Fig. 9 Section view at AA. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] like Figure 1 — Fig.10 As shown, a modular junction box of the present invention includes a housing 300 , a junction module 100 , a junction seat 110 , a wiring assembly 120 , an oil storage assembly 130 and an insect-proof cover 200 .

[0035] In the present invention, the copper cable is composed of a plurality of copper wires, and a copper core is inserted inside each copper wire; the copper cable that introduces the external copper cable into the junction box is called an incoming cable, and the copper wire that connects the junction box with the user-end device is called an outgoing cable. Specifically, after the copper cable passes into the junction box, the individual copper wires in the copper cable are stripped apart through the action of the junction module, and the copper core in each copper wire is connected to the corresponding spring sheet to realize the connection between the incoming cable and the junction box.

[0036] Multiple branching modules 100 can be detachably connected to the housing 300, each of the branching modules 100 includes a branching seat 110, multiple wiring components 120 and an oil storage component 130 corresponding to the wiring components 120, the wiring components 120 can be detachably connected to the branching seat 110, each of the oil storage components 130 can be detachably connected to the branching seat 110, the wiring components 120 and the oil storage components 130 are respectively located on both sides of the branching seat 110, and the insect-proof cover 200 is detachably connected to the housing 300. During installation, people need to connect the incoming cable to the side of the branching seat 110 close to the oil storage component 130, and seal the connection between the incoming cable and the branching seat 110 through the oil storage component 130, and then connect one end of the outgoing cable to the branching seat 110 is close to one side of the wiring assembly 120, and the connection between the outgoing cable and the junction seat 110 is sealed by the wiring assembly 120. In this way, not only can the end of the optical fiber close to the junction seat 110 be prevented from being oxidized or corroded, but also insects and ants can be prevented from gnawing at the connection between the incoming cable and the junction seat 110 and the connection between the outgoing cable and the junction seat 110, thereby increasing the service life of the junction box so that the junction box can work stably; in addition, multiple junction modules 100 are detachably installed on the shell 300, and then the incoming cable and the outgoing cable are installed on the corresponding junction modules 100 to realize the modularization of the junction box. In this way, denser optical fibers can be laid in a limited space, and it is also convenient for people to inspect and maintain them later.

[0037] like Figure 1 — Figure 7 As shown, each of the wiring assemblies 120 includes a plurality of plug-in blocks 121 . Specifically, a plurality of plug-in blocks 121 on the same straight line are referred to as a wiring assembly 120 .

[0038] The branching seat 110 is provided with a plurality of wiring shells 112 for clamping corresponding plug-in blocks 121, each of which is provided with a spring 111, each of which passes through the branching seat 110, and the plug-in block 121 is provided with an inner pin 122 and an outer pin 123, and the outer pin 123 is inserted into the interior of the corresponding wiring shell 112, and one end of the spring 111 is inserted between the inner pin 122 and the outer pin 123. During installation, people need to pass the spring 111 through the branching seat 110 so that one end of the spring 111 is located in the corresponding wiring shell 112, and the other end of the spring 111 passes through the branching seat 1 10 is away from the side of the wiring shell 112, and then one end of the output cable is passed through the inner pin 122 and the outer pin 123 in sequence, and then the plug block 121 is moved toward the corresponding wiring shell 112, so that the outer pin 123 and the inner pin 122 are both inserted into the same wiring shell 112, and the spring 111 is inserted between the inner pin 122 and the outer pin 123. When the outer pin 123 is buckled with the corresponding wiring shell 112, the output cable passing through the outer pin 123 and the inner pin 122 is pressed into the spring 111 by the plug block 121, so that the output cable is in close contact with the spring 111. In this way, tool-free installation can be achieved, which is convenient for people to operate.

[0039] Liquid polyisobutylene is a colorless to light yellow viscous liquid or an elastic rubbery semisolid (low molecular weight ones are soft and colloid, high molecular weight ones are tough and elastic), with an average molecular weight of 200,000 to 87 million, and has good light resistance, heat resistance, and oxidation resistance.

[0040] Liquid polyisobutylene is filled between the wiring shell 112 and the plug block 121. After people pass the reed 111 through the branch seat 110, the liquid polyisobutylene needs to be filled into the wiring shell 112. After that, each wiring assembly 120 is buckled with the corresponding wiring shell 112 so that the liquid polyisobutylene is stored between the wiring shell 112 and the plug block 121. In this way, the end of the reed 111 located in the wiring shell 112 can be wrapped by the liquid polyisobutylene, so that the end of the reed 111 located in the wiring shell 112 is isolated from the outside air, thereby preventing the end of the reed 111 located in the wiring shell 112 from being oxidized or corroded; furthermore, the liquid polyisobutylene fills the wiring shell 112 to prevent insects and ants from drilling into the wiring shell 112 and chewing out the cables, thereby ensuring that the junction box can work normally.

[0041] A U-shaped clamping plate 122a is provided on the inner pin 122, and a through hole 122b is provided between the clamping plate 122a and the inner pin 122. A pair of clamping plates 112a is provided on each of the wiring shells 112, and a gap 112b is provided between the two clamping plates 112a. The two clamping plates 112a are inserted into the corresponding through holes 122b. When the plug 121 moves toward the corresponding wiring shell 112, the pair of clamping plates 112a on the wiring shell 112 will be inserted into the through holes 122b until the clamping plates 112a are against the bottom of the through holes 122b. In this way, the inner pin 122 can be positioned and installed in the wiring shell 112.

[0042] Each of the outer pins 123 is provided with a clamping pin 123a that is clamped with the inside of the wiring shell 112, and each of the outer pins 123 is provided with a positioning block 123b, and the positioning block 123b is against the wiring shell 112. During installation, people need to insert both the outer pins 123 and the inner pins 122 into the corresponding wiring shell 112. When the clamping pin 123a is buckled in the wiring shell 112 and the positioning block 123b is against the wiring shell 112, the outer pin 123 can be positioned and installed on the corresponding wiring shell 112.

[0043] Each of the oil storage components 130 includes an oil storage shell 131 and a push plate 132. The push plate 132 is movably installed in the oil storage shell 131. Each of the oil storage shells 131 is buckled with the branching seat. The other end of the reed 111 is inserted into the oil storage shell 131. The oil storage shell 131 is filled with liquid polyisobutylene. When the reed 111 passes through the branching seat 110 and the oil storage shell 131 is buckled with the branching seat 110, one end of the reed 111 passes through the branching seat 110 and is inserted into the oil storage shell 131. The oil storage shell 131 is filled with liquid polyisobutylene, so that the end of the reed 111 passing through the branching seat 110 is just wrapped by the liquid polyisobutylene, so that the end of the reed 111 located in the oil storage shell 131 is isolated from the outside air, thereby preventing the end of the reed 111 located in the oil storage shell 131 from being oxidized or corroded; Furthermore, the liquid polyisobutylene fills the wiring shell 112 to prevent insects and ants from drilling into the oil storage shell 131 and gnawing on the cables, thereby ensuring that the junction box can work normally; further, a plurality of push blocks 132a are provided on one side of the push plate 132, and the push blocks 132a can move through the oil storage shell 131. When the oil storage shell 131 is buckled onto the branching seat 110 or the amount of liquid polyisobutylene stored in the oil storage shell 131 is small, people can push the push blocks 132a into the oil storage shell 131. Since the push plate 132 is fixedly connected to the push blocks 132a, the push plate 132 is pushed toward the reed 111. In this way, the liquid polyisobutylene stored in the oil storage shell 131 can be pushed toward the reed 111, so that the liquid polyisobutylene can wrap the reed 111, thereby ensuring that the end of the reed 111 located at the wiring shell 112 is isolated from the outside air.

[0044] Both ends of the oil storage shell 131 are provided with extension ears 133, and each of the extension ears 133 is provided with a hook tongue 133a that is buckled with the branching seat 110. The branching seat 110 is provided with a baffle shell assembly 113 and a baffle plate 114 for limiting the misaligned movement of the corresponding oil storage shell 131. The oil storage shell 131 is stuck between the baffle shell assembly 113 and the baffle plate 114. During installation, people need to embed the oil storage shell 131 between the baffle shell assembly 113 and the baffle plate 114. When the oil storage shell 131 is against the branching seat 110, the hook tongues 133a on the two extension ears 133 just buckle the branching seat 110, so that the oil storage shell 131 is positioned and installed on the branching seat 110.

[0045] A plurality of through slots 131a are provided on one side of the oil storage shell 131, and each of the retaining shell components 113 includes a pair of wire clamping plates 113a corresponding to the through slots 131a, and a gap 113b corresponding to the through slot 131a is provided between each pair of wire clamping plates 113a. When installing the incoming cable, people need to locate one end of the incoming cable and one end of the spring 111 in the oil storage shell 131, and clip the end of the incoming cable into the adjacent gap 113b. Afterwards, when the oil storage shell 131 is positioned and installed on the branching seat 110, the end of the incoming cable is just clipped into the corresponding through slot 131a, so that the incoming cable can be stably connected to the spring 111, and it is also convenient for people to organize the incoming cables.

[0046] like Figure 2 — Figure 3 and Figure 8 — Fig.10 As shown, each of the branching seat 110 is provided with a plurality of guide frames 115, and each of the wiring components 120 has a guide frame 115 on the same side, and each of the guide frames 115 is provided with guide grooves 115a corresponding to the wiring shell 112 on both sides. Specifically, one end of the guide groove 115a is aligned with the predetermined wiring shell 112, and the other end of the guide groove 115a is located at the end of the branching seat 110. Therefore, when people insert the outgoing cable from the end of the branching seat 110 into the guide groove 115a, the outgoing cable will be guided to the corresponding wiring shell 112 by the guiding effect of the guide groove 115a. Thereafter, the outgoing cable is stably connected to the spring sheet 111 through the wiring component 120. This not only makes it convenient for people to lay and organize the outgoing cables, but also greatly optimizes the wiring path inside the branching box.

[0047] Both ends of each of the branching seats 110 are provided with a clamping ring 116 and a limiting strip 117. The housing 300 is used to clamp the branching seat 110 with a clamping plate 310. Between two adjacent clamping plates 310, a limiting groove 320 for clamping the corresponding limiting strip 117 is provided. Each of the clamping plates 310 is provided with a clamping hole 311 for clamping the clamping ring 116. When people want to install the branching module 100 on the branching seat 110, people need to clamp the limiting strips 117 at both ends of the branching seat 110 into the corresponding limiting grooves 320. When the bottom end of the breakout seat 110 is against the shell 300, the card plates 310 at both ends of the breakout seat 110 are just inserted into the corresponding card holes 311 to realize the positioning and installation of the breakout seat 110 on the shell 300. When one of the breakout modules 100 needs to be removed from the shell 300, people only need to push the card plate 310 out of the corresponding card hole 311 to remove the entire breakout module 100 from the shell 300. In this way, it is convenient for people to replace or repair the optical fiber routing and the entire breakout module 100.

[0048] The insect-proof cover 200 is provided with a plurality of outer thread holes 210, and the shell 300 is provided with inner thread holes 330 corresponding to the outer thread holes 210. The inner part of the insect-proof cover 200 is provided with insect-proof cotton 220 near the outer thread holes 210, and the insect-proof cotton 220 is provided with cutouts 221 corresponding to the outer thread holes 210. When installing, people need to clamp the insect-proof cotton 220 inside the insect-proof cover 200 and align the cutouts 221 on the insect-proof cotton 220 with the corresponding outer thread holes 210. Then, the insect-proof cover 200 is installed on the shell 300, and the outer thread holes 210 are aligned with the corresponding inner thread holes 330. 0, thereafter, the optical fiber is passed through the outer line hole 210, the insect-proof cotton 220 and the inner line hole 330 in sequence, or through the inner line hole 330, the insect-proof cotton 220 and the outer line hole 210 in sequence. Since the insect-proof cotton 220 itself has a certain flexibility and elasticity, the insect-proof cotton 220 can cling to the edge of the optical fiber when the optical fiber passes through the insect-proof cotton 220, that is, the insect-proof cotton 220 can cling to the surface of the optical fiber when the optical fiber passes through the insect-proof cotton 220. In this way, external insects (such as mosquitoes or flies, etc.) can be blocked from entering the interior of the junction box, thereby ensuring that the junction box can be used normally.

[0049] A fixing plate 340 corresponding to the inner wire hole 330 is provided inside the shell 300 near the inner wire hole 330. When the optical fiber is inserted into the shell 300 through the inner wire hole 330 or passes through the inner wire hole 330, the optical fiber located in the shell 300 and near the inner wire hole 330 is just above the corresponding fixing plate 340. In this way, this part of the optical fiber can be tied to the fixing plate 340 by a cable tie, so that the optical fiber can be stably connected to the distribution module 100.

[0050] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A modular junction box, characterized in that: include: case; Multiple branching modules can be detachably connected in the housing, each of the branching modules includes a branching seat, multiple wiring components and an oil storage component corresponding to the wiring components, the wiring components can be detachably connected to the branching seat, and each of the oil storage components can be detachably connected to the branching seat; An insect-proof cover, detachably connected to the housing; The wiring assembly and the oil storage assembly are respectively located on both sides of the branching seat, each of the wiring assemblies includes a plurality of plug-in blocks, and the branching seat is provided with a plurality of wiring shells for clamping corresponding plug-in blocks; A spring is inserted into each of the wiring shells, and each of the springs passes through the branching seat. The plug block is provided with an inner pin and an outer pin, and the outer pin is inserted into the interior of the corresponding wiring shell, and one end of the spring is inserted between the inner pin and the outer pin; Each of the oil storage components comprises an oil storage shell and a push plate, wherein the push plate is movably installed in the oil storage shell, each of the oil storage shells is buckled with the branching seat, and the other end of the spring is inserted into the oil storage shell, and the oil storage shell is filled with liquid polyisobutylene; A U-shaped clamping plate is provided on the inner pin, and a through hole is provided between the clamping plate and the inner pin. Each wiring shell is provided with a pair of clamping plates, and a gap is provided between the two clamping plates. Both clamping plates are inserted into the corresponding through holes.

2. A modular junction box according to claim 1, characterized in that: Each of the outer pins is provided with a clamping pin that is clamped with the inside of the wiring shell, and each of the outer pins is provided with a positioning block, the positioning block abuts against the wiring shell, and liquid polyisobutylene is filled between the wiring shell and the plug block.

3. A modular junction box according to claim 1, characterized in that: One side of the oil storage shell is provided with a plurality of through grooves, one side of the push plate is provided with a plurality of push blocks, the push blocks movably pass through the oil storage shell, both ends of the oil storage shell are provided with extension ears, and each of the extension ears is provided with a hook tongue that is buckled with the branch line seat.

4. A modular junction box according to claim 1, characterized in that: Both ends of each of the branching seats are provided with a clamping ring and a limit strip, and the shell is used to clamp the branching seat with a clamping plate; a limit groove for clamping the corresponding limit strip is provided between two adjacent clamping plates, and each of the clamping plates is provided with a clamping hole for clamping the clamping ring.

5. A modular junction box according to claim 1, characterized in that: The insect-proof cover is provided with a plurality of outer thread holes, the shell is provided with inner thread holes corresponding to the outer thread holes, the inner part of the insect-proof cover is provided with insect-proof cotton near the outer thread holes, and the insect-proof cotton is provided with cutouts corresponding to the outer thread holes.

6. A modular junction box according to claim 5, characterized in that: A fixing plate corresponding to the inner wire hole is arranged inside the shell near the inner wire hole.

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