A new type of pre-wired box for modular integrated buildings

Abstract

The utility model relates to preburied wire box technical field especially a new preburied wire box for modular integrated building, the utility model discloses a box body and four groups of plugging components, the top of box body is open structure, its inside is used for pipeline connection, and the outer wall of four around box body all is established to have the pipe joint, and every side wall all is established to have at least two pipe joints, four groups of plugging components are same in structure, and all include the plugging board and the clamping component, four groups of clamping components are fixed respectively and install on the outer wall of four around box body, and the plugging board can be vertically detachably inserted in the corresponding clamping component, so that the plugging board and the outer wall of box body are attached, and cover its corresponding pipe joint. Through setting up the plugging board and the clamping component, the plugging board can effectively block up every pipe joint, so as to effectively prevent the concrete slurry etc. from entering the inside of box body through the pipe joint, avoids that preburied wire box and internal pipeline are blocked.

Description

Technical Field

[0001] This utility model relates to the field of embedded junction box technology, and in particular to a novel embedded junction box for modular integrated buildings. Background Technology

[0002] With the development of modular building technology, especially the application of Modular Integrated Construction (MiC), it is known as the 4.0 era of modular building. This construction method can be widely used in a variety of building projects, including high-rise buildings and residential projects, hotels and tourist resorts, education and medical facilities, etc.

[0003] Specifically, the core implementation path of Modular Integrated Building (MiC) is as follows: In a standardized factory workshop, building structural components, electromechanical pipelines, and interior components are prefabricated into modular units with independent functions. After passing quality inspection, these units are transported to the project site and assembled to complete the overall building construction. Therefore, the assembly of modular buildings places extremely high demands on the processing precision of components, on-site installation efficiency, and compatibility between various systems. Among these, the pre-embedded junction box, as a key basic component of the building's electromechanical system, directly affects the subsequent wiring and the overall quality of the building.

[0004] Pre-embedded junction boxes are functional components pre-installed within walls, floors, and other structural elements during building construction. They primarily serve core functions such as wire connection, electrical wiring transition, and wiring safety protection, while also preventing exposed wiring and ensuring the cleanliness and integrity of the building surface. However, currently, most pre-embedded junction boxes have multiple connection ports (interfaces for connecting conduits) that are left open at the factory without effective sealing structures. Even when some pre-embedded junction boxes use simple sealing measures at the factory (such as thin plastic caps or tape), the strength and sealing performance of these seals are extremely weak and cannot withstand the external forces and environmental influences during construction. Especially during concrete vibration or pouring, concrete slurry can easily enter the pre-embedded junction box through the connection ports or by breaking the sealing structure. After the concrete hardens, the interior of the pre-embedded junction box and its internal conduits will be completely encased or blocked by the concrete, preventing subsequent wire installation and connection, and creating potential safety hazards.

[0005] Therefore, there is an urgent need for a new type of embedded junction box with strong sealing performance and reliable structure to prevent concrete from entering the embedded junction box. Utility Model Content

[0006] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a new type of pre-embedded junction box for modular integrated buildings, which solves the technical problem that the existing pre-embedded junction boxes have poor sealing performance, which makes it easy for concrete slurry to enter the pre-embedded junction box and affect the installation and connection of pipelines.

[0007] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: This utility model provides a novel pre-embedded junction box for modular integrated buildings, comprising a box body and four sets of sealing components. The top of the box body is an open structure, and its interior is used for pipeline connection. Each of the four outer walls of the box body has a connection port, and each side wall has at least two connection ports for inserting wiring pipes. The four sets of sealing components have the same structure, each including a sealing plate and a snap-fit ​​component. The four sets of snap-fit ​​components are respectively fixedly installed on the four outer walls of the box body. The number of sealing plates is the same as the number of connection ports. The sealing plate can be vertically and detachably inserted into the corresponding snap-fit ​​component so that the sealing plate fits against the outer wall of the box body and covers its corresponding connection port to seal the connection port.

[0008] Preferably, the snap-fit ​​assembly includes at least one T-shaped strip and two L-shaped strips; both the at least one T-shaped strip and the two L-shaped strips are vertically arranged and fixedly installed on one outer wall of the box body; the two L-shaped strips are located at two edges of one outer wall of the box body, and the openings of the two L-shaped strips are opposite to each other; at least one T-shaped strip is located between the two L-shaped strips, and each T-shaped strip is also located between two adjacent pipe openings; a snap-fit ​​channel is formed between the T-shaped strip and the adjacent L-shaped strip, and between the T-shaped strip and the adjacent T-shaped strip; the sealing plate is vertically inserted into the snap-fit ​​channel.

[0009] Preferably, the novel pre-embedded junction box further includes two positioning ear plates; both positioning ear plates are horizontally arranged, and the two positioning ear plates are respectively fixedly installed on the outer walls of the T-shaped strip and the L-shaped strip on opposite sides of the box body, and both positioning ear plates are horizontally provided with reinforcing bar holes for passing through reinforcing bars.

[0010] Preferably, a circular groove is provided on the inner wall of each of the connecting ports, and a first sealing ring is fixedly connected in each circular groove for sealing the connecting pipe.

[0011] Preferably, the novel pre-embedded junction box further includes a snap-fit ​​assembly; the snap-fit ​​assembly is detachably inserted into the connector port, one end of the snap-fit ​​assembly is placed inside the box body, and the other end is placed outside the box body, and the portion of the snap-fit ​​assembly located at the connector port is in contact with the inner wall of the first sealing ring; one end of the snap-fit ​​assembly placed outside the box body is inserted into the wiring conduit to snap the wiring conduit into the connector port.

[0012] Preferably, the snap-fit ​​assembly includes an external threaded bushing, a nut, and an internal threaded bushing; the external threaded bushing is horizontally positioned and inserted into the connector opening, with one end of the external threaded bushing located outside the housing and the other end located inside the housing, the portion of the external threaded bushing located at the connector opening fitting against the inner wall of the first sealing ring, and the connector being inserted into the end of the external threaded bushing located outside the housing; the nut and the internal threaded bushing are both screwed onto the outer wall of the end of the external threaded bushing located inside the housing, so as to snap-fit ​​and fix the snap-fit ​​assembly and the connector to the connector opening.

[0013] Preferably, the snap-fit ​​assembly further includes a second sealing ring; the second sealing ring is located inside the housing, and the second sealing ring is sleeved on the outer wall of the external threaded bushing, and located between the inner wall of the housing and the nut, for further sealing the connector.

[0014] Preferably, there are two second sealing rings, both of which are fitted onto the outer wall of the external threaded bushing and are located between the inner wall of the box and the nut.

[0015] Preferably, the inner walls of opposite sides of the box are provided with protruding strips, which are arranged vertically. The two protruding strips have vertically extending threaded through holes for fixing the box to the wall with screws.

[0016] Preferably, both the outer wall of the protruding strip and the inner wall of the box are coated with a moisture-proof coating.

[0017] (III) Beneficial Effects The beneficial effects of this utility model are: This utility model discloses a novel pre-embedded junction box for modular integrated buildings. By incorporating a sealing plate and a snap-fit ​​assembly, the sealing plate can be detachably inserted into the snap-fit ​​assembly, effectively sealing each connection port. This improves the sealing performance of the connection ports, preventing concrete slurry and other contaminants from entering the box through the connection ports, thus avoiding blockages in the pre-embedded junction box and internal conduits. This ensures the normal installation and connection of subsequent electrical wires and reduces potential safety hazards. Furthermore, the sealing plate is vertically detachable within the snap-fit ​​assembly, allowing for easy removal when connecting conduits on-site. Connection ports not requiring conduit connections are sealed, allowing for selection based on different connection port requirements. This improves the applicability and sealing performance of the new pre-embedded junction box, while simplifying operation, increasing construction efficiency, and effectively reducing construction costs and time. This novel pre-embedded junction box effectively seals connection ports to prevent concrete slurry from entering the box, thereby improving the box's sealing performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a novel pre-embedded junction box for modular integrated buildings according to this utility model. Figure 2 This is a schematic diagram of the overall three-dimensional structure of the box body and sealing components of a novel pre-embedded junction box for modular integrated buildings according to this utility model. Figure 3 This is a top view of a novel pre-embedded junction box for modular integrated buildings according to the present invention. Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 This is a schematic diagram of the overall three-dimensional structure of a snap-fit ​​assembly for a novel pre-embedded junction box used in modular integrated buildings according to this utility model. Figure 6 This is a schematic diagram of the overall front view structure of a novel pre-embedded junction box for modular integrated buildings according to this utility model. Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at point BB; Figure 8 This is a schematic diagram of the overall three-dimensional structure of a novel pre-embedded junction box for modular integrated buildings according to Embodiment 2 of this utility model.

[0019] [Explanation of Labels in the Attached Image] 1: Box body; 11: Connecting port; 111: Slot; 12: Snap-fit ​​groove; 13: Short connecting groove; 14: Long connecting groove; 15: Short connecting plate; 16: Long connecting plate; 17: Mounting piece; 171: Screw hole; 2: Sealing assembly; 21: Sealing plate; 22: Snap-fit ​​assembly; 221: T-shaped strip; 222: L-shaped strip; 3: Wiring pipe; 4: Positioning ear plate; 41: Rebar hole; 5: First sealing ring; 6: Snap-fit ​​assembly; 61: External threaded bushing; 62: Nut; 63: Internal threaded bushing; 64: Second sealing ring; 7: Raised strip; 71: Threaded through hole; a: Snap-fit ​​channel. Detailed Implementation

[0020] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0021] Example 1 like Figure 1 As shown, this embodiment of a novel pre-embedded junction box for modular integrated buildings includes a box body 1 and four sets of sealing components 2.

[0022] Specifically, such as Figure 1 and Figure 2As shown, the top of the box 1 is an open structure, and its interior is used for pipeline connection. Connector ports 11 are provided on all four outer walls of the box 1, with two connector ports 11 on each side wall. Connector ports 11 are used to insert wiring conduits 3. The four sets of sealing components 2 have identical structures, each including a sealing plate 21 and a snap-fit ​​component 22. The four sets of snap-fit ​​components 22 are fixedly installed on the four outer walls of the box 1. The number of sealing plates 21 is the same as the number of connector ports 11. The sealing plate 21 can be vertically and detachably inserted into its corresponding snap-fit ​​component 22, so that the sealing plate 21 fits against the outer wall of the box 1 and covers its corresponding connector port 11 to seal the connector port 11. By setting up a sealing plate 21 and a snap-fit ​​assembly 22, the sealing plate 21 can be detachably inserted into the snap-fit ​​assembly 22, allowing the sealing plate 21 to effectively seal each connection port 11, improving the sealing performance of the connection port 11. This prevents concrete slurry and other contaminants from entering the box 1 through the connection port 11, avoiding the problem of blockage of the embedded junction box and internal pipelines, ensuring the normal installation and connection of subsequent wires, and reducing potential safety hazards. Moreover, the sealing plate 21 is vertically detachably inserted into the snap-fit ​​assembly 22, making it easy to remove when the wiring conduit 3 needs to be connected on the construction site. Connection ports 11 that do not need to be connected to the wiring conduit 3 are sealed. That is, depending on the different needs of the connection port 11, the choice of whether to seal the connection port 11 with the sealing plate 21 is made, improving the applicability and sealing performance of the new type of embedded junction box. At the same time, the operation is simple, improving construction efficiency and effectively reducing construction costs and time. The novel embedded junction box of this utility model can effectively seal the connection port 11 to prevent concrete slurry from entering the box body 1 from the connection port 11, thereby improving the sealing performance of the embedded junction box to meet the IP65 waterproof requirement and adapt to the long-term use environment of modular buildings.

[0023] Furthermore, such as Figure 1 , Figure 2 and Figure 7As shown, the snap-fit ​​assembly 22 includes a T-shaped strip 221 and two L-shaped strips 222. Both the T-shaped strip 221 and the two L-shaped strips 222 are vertically arranged and fixedly installed on one outer wall of the housing 1. The two L-shaped strips 222 are located at two edges of one outer wall of the housing 1, with their openings facing each other. The T-shaped strip 221 is located between the two L-shaped strips 222, and is also located between two adjacent connecting ports 11. A snap-fit ​​channel a is formed between the T-shaped strip 221 and the adjacent L-shaped strips 222. A sealing plate 21 is vertically inserted into the snap-fit ​​channel a. The snap-fit ​​channel a provides a stable snap-fit ​​structure for the sealing plate 21, allowing the sealing plate 21 to be stably snapped into the snap-fit ​​channel a. This enables the sealing plate 21 to stably cover and seal the inlet 11, preventing concrete slurry and other substances from entering the housing 1 from the inlet 11, thus improving the stability of the sealing assembly 2 and further enhancing the sealing performance of the sealing plate 21 in sealing the inlet 11. Preferably, the sealing plate 21 and the snap-fit ​​channel a are interference-fitted to prevent the sealing plate 21 from falling off, further improving the stability of the snap-fit ​​between the sealing plate 21 and the snap-fit ​​channel a and the sealing performance of the inlet 11.

[0024] When the number of pipe openings 11 on one side wall of the box body 1 is three or more, a T-shaped strip 221 is provided between each two adjacent pipe openings 11, so that a snap-fit ​​channel a is formed between the T-shaped strip 221 and the adjacent L-shaped strip 222, and between the T-shaped strip 221 and the adjacent T-shaped strip 221. One snap-fit ​​channel a corresponds to one sealing plate 21, and one sealing plate 21 corresponds to one pipe opening 11.

[0025] Furthermore, such as Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the new type of embedded junction box also includes two positioning ear plates 4. Both positioning ear plates 4 are horizontally arranged and fixedly installed on the outer walls of the T-shaped strip 221 and L-shaped strip 222 on opposite sides of the box body 1, respectively. Both positioning ear plates 4 have horizontally opened rebar holes 41 for passing through rebars. This allows the embedded junction box to be firmly installed on the rebar skeleton of the building structure. By clamping the embedded junction box in the gaps of the rebar skeleton, displacement or tilting of the embedded junction box is avoided during construction operations such as vibration and pouring, ensuring the accuracy and precision of the embedded junction box's installation position, and ensuring that the embedded position deviation is ≤±1mm. Of course, three or four positioning ear plates 4 can also be provided to accommodate different rebar skeletons through which the positioning ear plates 4 are passed, further stabilizing the installation of the embedded junction box. The length of the rebar hole 41 ranges from 15mm to 20mm, and the diameter is preferably 8mm. Furthermore, the pre-embedded junction box can also be fixed to the module mold or the reinforcing steel frame by bolts passing through the reinforcing steel hole 41, so as to ensure stable installation of the pre-embedded junction box. Of course, the bolts can be fixed to the module mold by screwing or welding, and can be fixed to the reinforcing steel frame by welding.

[0026] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, each connector 11 has a circular groove 111 on its inner wall, and a first sealing ring 5 is fixedly connected in each circular groove 111 to seal the conduit 3. By creating a circular groove 111 on the inner wall of the connector 11 and placing a first sealing ring 5 therein, when the conduit 3 is connected to the connector 11, the sealing ring can fit tightly against the outer wall of the conduit 3 to form an effective seal, preventing concrete slurry or other debris from seeping into the box 1 from the gap between the connector 11 and the conduit 3, further improving the sealing performance of the embedded junction box. The inner wall of the first sealing ring 5 can also protrude from the inner wall of the groove 111 to allow for a tighter fit between the first sealing ring 5 and the conduit 3.

[0027] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, the new type of pre-embedded junction box also includes a snap-fit ​​assembly 6. The snap-fit ​​assembly 6 is detachably inserted into the connector 11, with one end inside the box body 1 and the other end outside the box body 1. The portion of the snap-fit ​​assembly 6 located at the connector 11 is in contact with the inner wall of the first sealing ring 5. The end of the snap-fit ​​assembly 6 located outside the box body 1 is inserted into the wiring conduit 3 to snap the wiring conduit 3 into the connector 11. This not only enables a stable connection of the wiring conduit 3 to the connector 11 but also allows for a quick connection between the wiring conduit 3 and the pre-embedded junction box, improving the efficiency of on-site pipeline installation in modular buildings. Furthermore, by detachably inserting the snap-fit ​​assembly 6 into the connector 11, it can be adapted to wiring conduits 3 of different sizes; that is, different sizes of wiring conduits 3 use snap-fit ​​assemblies 6 of corresponding sizes, thereby improving the applicability and adaptability of the pre-embedded junction box.

[0028] Furthermore, such as Figures 3-5 As shown, the snap-fit ​​assembly 6 includes an external threaded bushing 61, a nut 62, and an internal threaded bushing 63. The external threaded bushing 61 is horizontally positioned and inserted into the connector port 11. One end of the external threaded bushing 61 is located outside the housing 1, and the other end is located inside the housing 1. The portion of the external threaded bushing 61 located at the connector port 11 is in contact with the inner wall of the first sealing ring 5. The connector 3 is inserted into the end of the external threaded bushing 61 located outside the housing 1. The nut 62 and the internal threaded bushing 63 are both screwed onto the outer wall of the end of the external threaded bushing 61 located inside the housing 1, thereby snapping the snap-fit ​​assembly 6 and the connector 3 into place at the connector port 11. By setting the external threaded bushing 61, nut 62, and internal threaded bushing 63, the snap-fit ​​assembly 6 can be stably snapped into the connector 11, thus providing a stable insertion structure between the conduit 3 and the external threaded bushing 61. That is, simply tightening the internal threaded bushing 63 and nut 62 is sufficient to stably snap the snap-fit ​​assembly 6 into the connector 11, preventing the conduit 3 from aging and detaching from the connector 11 due to erosion over time when connected alone, and preventing the internal wiring of the conduit 3 from being exposed, thereby improving the structural stability between the conduit 3 and the connector 11. Furthermore, the external threaded bushing 61, nut 62, and internal threaded bushing 63 can be adapted to different sizes of connectors 11 and conduits 3, that is, using external threaded bushings 61, nut 62, and internal threaded bushings 63 corresponding to the connector 11 and conduit 3, thereby improving the applicability and adaptability of the snap-fit ​​assembly 6.

[0029] Furthermore, such as Figures 3-5As shown, the snap-fit ​​assembly 6 also includes a second sealing ring 64. The second sealing ring 64 is located inside the housing 1, and is fitted onto the outer wall of the external threaded bushing 61, situated between the inner wall of the housing 1 and the nut 62, for further sealing the connection port 11. The second sealing ring 64 can be tightly fitted to the inner wall of the connection port 11 of the housing 1 by tightening the nut 62, thus forming a double-sealing structure with the first sealing ring 5. This further improves the overall sealing performance of the connection port 11, reliably preventing concrete slurry and other substances from seeping into the housing 1 through the gap between the connection port 11 and the external threaded bushing 61. Preferably, there are two second sealing rings 64. Both second sealing rings 64 are sleeved on the outer wall of the external threaded bushing 61 and are located between the inner wall of the box body 1 and the nut 62. They can form a multi-seal structure with the first sealing ring 5, further improving the sealing performance of the pipe opening 11 on the inner side of the box body 1, thereby further reducing the risk of concrete slurry and other substances seeping in from the gap between the pipe opening 11 and the external threaded bushing 61.

[0030] Furthermore, such as Figure 1 and Figure 7 As shown, the inner walls of opposite sides of the box 1 are respectively provided with protruding strips 7, which are vertically arranged. Two protruding strips 7 have vertically extending threaded through holes 71 for fixing the box 1 to the wall with screws, thereby improving the applicability of the pre-embedded junction box. That is, the pre-embedded junction box in this embodiment can not only be positioned and fixed to the reinforcing steel frame by the positioning ear plate 4, but also can be installed in grooves cut into already poured walls. This is similar to the grooves made in the wall during water and electricity renovation in existing buildings for installing pre-embedded junction boxes. The pre-embedded junction box is then fixed into the groove in the wall by screws passing through the threaded through holes 71 on the protruding strips 7, thus enabling subsequent individual installation of the pre-embedded junction box and improving its applicability.

[0031] Furthermore, both the outer wall of the protruding strip 7 and the inner wall of the box 1 are coated with a moisture-proof coating. This coating prevents internal pipes and terminals from corroding or short-circuiting due to moisture, improving the moisture resistance and service life of the embedded junction box, as well as its corrosion resistance. The moisture-proof coating is preferably made of epoxy resin, which has a dense molecular structure and forms a highly waterproof and sealing coating. It effectively prevents moisture and dampness from penetrating the wall into the box 1, while also resisting slight corrosive substances (such as alkaline components in cement) that may be present in the wall. This prevents metal components or internal wiring of the box 1 from malfunctioning due to moisture or corrosion, extending the service life of the embedded junction box. Moreover, the epoxy resin coating has strong adhesion to common substrates of the box 1, such as metal and plastic, and is not prone to peeling or cracking due to wall settlement or temperature changes. It can maintain a tight, long-term bond between the outer wall of the protruding strip 7 and the inner wall of the box 1, continuously providing moisture protection.

[0032] It should be noted that the box body 1 in this embodiment can be made of metal, such as galvanized steel sheet, or it can be made of high-strength flame-retardant plastic, such as ABS (ABS plastic is a terpolymer of acrylonitrile, butadiene, and styrene) and a flame retardant. The specific material depends on the construction site and is not limited here. Moreover, the box body 1 can be a cuboid, cube, rhombus, or other customized irregular shape structure, and the sealing plate 21 varies with the shape of the box body 1 to adapt to the installation requirements of different modular buildings and improve the adaptability of the pre-embedded junction box. The first sealing ring 5 and the second sealing ring 64 are both rubber sealing rings, so that both the first sealing ring 5 and the second sealing ring 64 are elastic, improving the sealing performance.

[0033] Based on the above structure, the installation principle of a novel pre-embedded junction box for modular integrated buildings in this embodiment is as follows: First, the embedded junction boxes are prefabricated in the factory. For embedded junction boxes that need to be pre-installed, when laying the steel reinforcement cage, the steel bars corresponding to the two steel bars holes 41 on the steel reinforcement cage are passed through the steel bars holes 41, and the steel bars perpendicular to the steel bars passed through the two steel bars holes 41 are placed on both sides of the embedded junction box, so that the steel bars clamp the embedded junction box and prevent the position of the embedded junction box from shifting.

[0034] Next, identify the connector 11 that needs to be connected to the conduit 3, remove the sealing plate 21 covering the connector 11, insert one end of the conduit 3 into the external threaded bushing 61, insert the external threaded bushing 61 into the connector 11, and then sequentially fit and screw the two second sealing rings 64, nuts 62, and internal threaded bushings 63 onto the external threads of the external threaded bushing 61 inside the housing 1, and tighten them so that the second sealing rings 64 fit tightly against the inner wall of the housing 1, thus completing the connection of the conduit 3. For connector 11 that does not need to be connected to the conduit 3, it is not necessary to remove the sealing plate 21, thus sealing the corresponding connector 11. Finally, pour the concrete, thus completing the pre-embedded construction of the embedded junction box.

[0035] For pre-installed junction boxes, it is only necessary to open grooves in the wall and floor, place the pre-installed junction box in the groove, and fix the pre-installed junction box in the groove by screws or expansion screws through the threaded through holes 71 on the protrusion 7. Then, the wiring is carried out by connecting the wiring pipe 3 as described above, thereby completing the installation of the pre-installed junction box.

[0036] Example 2 Unlike Example 1, as Figure 8As shown, snap-fit ​​grooves 12 are provided on all four outer walls of the box body 1 at the locations of the connecting pipe openings 11. The bottom wall of the snap-fit ​​groove 12 extends downward to communicate with the outside, and the snap-fit ​​groove 12 is located on the outer periphery of the corresponding connecting pipe opening 11. The sealing plate 21 can be inserted into the snap-fit ​​groove 12 to seal the connecting pipe opening 11 at that location. At the same time, two vertical short connecting grooves 13 are provided on the top side wall of one of the outer walls of the box body 1 with snap-fit ​​grooves 12. Meanwhile, a vertical long connecting groove 14 is provided on the outer wall of the box body 1 between the two connecting pipe openings 11, and the long connecting groove 14 is located between the two short connecting grooves 13. On the opposite side wall, two vertical short connecting plates 15 and one vertical long connecting plate 16 are provided, which are inserted into the two short connecting grooves 13 and the long connecting groove 14 respectively. The positioning ear plate 4 is fixedly installed on two opposite side walls perpendicular to the side wall of the box body 1 where the short connecting grooves 13 are located.

[0037] When two embedded junction boxes need to be spliced, only the two short connecting plates 15 and one long connecting plate 16 on one embedded junction box need to be inserted into the two short connecting slots 13 and one long connecting slot 14 on the other embedded junction box. The two short connecting slots 13 and the two short connecting plates 15, and the long connecting slots 14 and the long connecting plate 16 are interference fit, so that the two embedded junction boxes can be assembled and the two embedded junction boxes can be stably fixed together, avoiding the two embedded junction boxes from separating during concrete pouring or other disturbances. It also improves the efficiency of splicing the two embedded junction boxes, thereby improving the construction efficiency.

[0038] Meanwhile, four horizontally arranged circular mounting plates 17 are provided at the top four corners of the box body 1. Each mounting plate 17 has a vertically opened screw hole 171 to enable the subsequent installation of the pre-embedded junction box in the groove opened in the wall or on other module templates, thereby improving the applicability of the pre-embedded junction box and making the installation of the pre-embedded junction box more diverse.

[0039] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A novel pre-embedded junction box for modular integrated buildings, characterized in that, It includes a housing (1) and four sets of sealing components (2); The top of the box (1) is an open structure, and its interior is used for pipeline connection. The outer walls of the box (1) are provided with pipe ports (11), and at least two pipe ports (11) are provided on each side wall. The pipe ports (11) are used to insert wiring pipes (3). The four sets of sealing components (2) have the same structure, each including a sealing plate (21) and a snap-fit ​​component (22). The four sets of snap-fit ​​components (22) are respectively fixedly installed on the outer walls of the box body (1). The number of sealing plates (21) is the same as the number of pipe openings (11). The sealing plate (21) can be vertically and detachably inserted into the corresponding snap-fit ​​component (22) so that the sealing plate (21) fits against the outer wall of the box body (1) and covers its corresponding pipe opening (11) to seal the pipe opening (11).

2. The novel embedded junction box for modular integrated buildings as described in claim 1, characterized in that: The snap-fit ​​assembly (22) includes at least one T-shaped strip (221) and two L-shaped strips (222). At least one T-shaped strip (221) and two L-shaped strips (222) are vertically arranged and fixedly installed on one side of the outer wall of the box (1); The two L-shaped strips (222) are located at the two edges of one side outer wall of the box body (1), and the openings of the two L-shaped strips (222) are arranged opposite to each other; At least one of the T-shaped strips (221) is located between two L-shaped strips (222), and each of the T-shaped strips (221) is also located between two adjacent pipe openings (11); A snap-fit ​​channel (a) is formed between the T-shaped strip (221) and the adjacent L-shaped strip (222), and between the T-shaped strip (221) and the adjacent T-shaped strip (221). The sealing plate (21) is vertically inserted into the snap-fit ​​channel (a).

3. The novel embedded junction box for modular integrated buildings as described in claim 2, characterized in that: The new type of pre-embedded box also includes two positioning ear plates (4). Both positioning ear plates (4) are horizontally arranged. The two positioning ear plates (4) are fixedly installed on the outer walls of the T-shaped strip (221) and the L-shaped strip (222) on opposite sides of the box body (1). Both positioning ear plates (4) are horizontally provided with steel bar holes (41) for passing through steel bars.

4. The novel embedded junction box for modular integrated buildings as described in claim 1, characterized in that: Each of the connecting pipes (11) has a circular groove (111) on its inner wall, and a first sealing ring (5) is fixedly connected in each circular groove (111) to seal the connecting pipe (3).

5. The novel embedded junction box for modular integrated buildings as described in claim 4, characterized in that: The new type of pre-embedded junction box also includes a snap-fit ​​component (6); The buckle assembly (6) is detachably inserted into the inlet (11). One end of the buckle assembly (6) is placed inside the box (1), and the other end is placed outside the box (1). The portion of the buckle assembly (6) located at the inlet (11) is in contact with the inner wall of the first sealing ring (5). One end of the snap-fit ​​assembly (6) placed outside the box (1) is inserted into the wiring pipe (3) to snap the wiring pipe (3) into the connector (11).

6. The novel embedded junction box for modular integrated buildings as described in claim 5, characterized in that: The snap-fit ​​assembly (6) includes an external threaded bushing (61), a nut (62), and an internal threaded bushing (63). The external threaded bushing (61) is horizontally positioned and inserted into the connector port (11). One end of the external threaded bushing (61) is placed outside the box body (1), and the other end is placed inside the box body (1). The portion of the external threaded bushing (61) located at the connector port (11) is in contact with the inner wall of the first sealing ring (5). The connecting pipe (3) is inserted at the end of the external threaded bushing (61) located outside the box body (1). The nut (62) and the internal threaded bushing (63) are both screwed onto the outer wall of the end of the external threaded bushing (61) located inside the box (1) to snap and fix the snap-fit ​​assembly (6) and the wiring pipe (3) to the connection port (11).

7. The novel embedded junction box for modular integrated buildings as described in claim 6, characterized in that: The snap-fit ​​assembly (6) also includes a second sealing ring (64); The second sealing ring (64) is located inside the box body (1), and the second sealing ring (64) is sleeved on the outer wall of the external thread bushing (61) and located between the inner wall of the box body (1) and the nut (62) for further sealing the pipe opening (11).

8. The novel embedded junction box for modular integrated buildings as described in claim 7, characterized in that: There are two second sealing rings (64), both of which are sleeved on the outer wall of the external thread bushing (61) and are located between the inner wall of the box (1) and the nut (62).

9. The novel embedded junction box for modular integrated buildings as described in claim 1, characterized in that: The inner walls of the box (1) on opposite sides are respectively provided with protruding strips (7). The protruding strips (7) are arranged vertically, and the two protruding strips (7) are provided with vertically extending threaded through holes (71) for fixing the box (1) to the wall by screws.

10. The novel embedded junction box for modular integrated buildings as described in claim 9, characterized in that: Both the outer wall of the protrusion (7) and the inner wall of the box (1) are coated with a moisture-proof coating.

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