An electrical conduit system for modular buildings

Abstract

This utility model relates to the field of modular buildings, and more particularly to an electrical conduit system for modular buildings, including a flat straight conduit. The outer wall and inner bore of this flat straight conduit have flat circular cross-sections. The width of the flat circular cross-section of the outer wall is less than or equal to 20mm, and the inner bore can accommodate at least three wires. It can be embedded in the top slab, walls, and bottom slab of modular buildings. During pre-embedding, the width direction of the flat straight conduit's cross-section is perpendicular to the plane to which it is embedded. This solves the problem of traditional round pipes being inconvenient to embed in the thin-shell walls of modular buildings. This flat straight conduit, while meeting the pipe cross-section throughput requirements, is easier to embed in modular buildings, allowing the electrical conduit system to be integrated with the modular building, thus improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of modular buildings, and in particular to an electrical conduit system for modular buildings. Background Technology

[0002] Prefabricated modular construction is one of the construction methods that the country is vigorously developing. It involves breaking down building, structure, and electromechanical systems into small, independent modules that are also tightly integrated as a whole. These modules can be mass-produced in factories, achieving high integration and precision. Once produced, the modules are transported to the site and hoisted to complete the building construction. Prefabricated modular construction is a typical example of industrialized construction. Compared to traditional construction methods, it can significantly shorten construction time, reduce carbon emissions, decrease on-site construction noise and dust, and lower the on-site construction risk factor. In terms of electrical engineering, according to Article 8.3.3 of the "Standard for Electrical Design of Civil Buildings GB 51348-2019," the total cross-sectional area (including the outer sheath) of insulated wires (excluding two wires) running through metal conduits should not exceed 40% of the cross-sectional area inside the conduit; and according to Article 6.1.2 of the "General Specification for Building Electrical and Intelligent Systems GB 55024-2022," the total cross-sectional area of ​​power distribution wires in conduits and cable trays should not exceed 40% of the cross-sectional area inside the conduit or cable tray. Furthermore, according to Article 6.4.5 of the "Code for Electrical Design of Residential Buildings JGJ 242-2011," for households with a building area of ​​60m² or less and consisting of one-bedroom units, the incoming power line should not be less than 6mm², the lighting circuit branch lines should not be less than 1.5mm², and the socket circuit branch lines should not be less than 2.5mm². For households with a building area greater than 60m², the incoming power line should not be less than 10mm², and the lighting and socket circuit branch lines should not be less than 2.5mm². This concludes that the diameter of the high-voltage power line conduit (especially for residential buildings) should typically be at least 32mm (i.e., the cross-sectional area of ​​a traditional 32mm diameter, 2mm-3mm wall thickness round pipe) to meet the requirements for installing the required high-voltage power line. However, modular structural systems limit the conduit diameter to 25mm and above, making it unsuitable for installation in composite slab cast-in-place layers, especially in thin-shell walls. Therefore, existing circular cross-section pipes cannot meet the requirements of pre-embedding in modular buildings while satisfying the pipe cross-section throughput. Furthermore, the bending radius of pipes with larger diameters is relatively large, making it difficult to operate when tying structural beam reinforcement cages on the construction site. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides an electrical conduit system for modular buildings, which minimizes changes to the original cross-sectional area and solves the problem that traditional round pipes with a diameter of 25mm or more are not suitable for installation in modular buildings while ensuring the requirements for the insertion of high-voltage power lines.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] This utility model provides an electrical conduit system for modular buildings, including a flat straight conduit with a flat circular cross-section for both its outer wall and inner hole. The width of the flat circular cross-section of the outer wall of the flat straight conduit is less than or equal to 20 mm. The inner hole of the flat straight conduit can accommodate at least three wires, and the total cross-sectional area of ​​the wires is less than 40% of the cross-sectional area of ​​the inner hole. This flat straight conduit can be embedded in the top / wall / bottom slab of a modular building. During embedding, the width direction of the cross-section of the flat straight conduit is parallel to the thickness direction of the embedded top / wall / bottom slab.

[0008] Optionally, the width of the flat circular cross-section of the outer wall of the flat straight pipe and the width of the flat circular cross-section of the inner hole of the flat straight pipe are the same as the diameter of the semi-circular regions at both ends of the cross-section, and the flat straight pipe is a pipe with equal wall thickness; wherein the width of the outer wall cross-section of the flat straight pipe is 16mm-20mm, the length of the outer wall cross-section of the flat straight pipe is 16mm-83mm, the wall thickness of the flat straight pipe is greater than or equal to 1mm, and the material of the flat straight pipe is metal or plastic.

[0009] Alternatively, the specifications of the flat straight pipe can be selected from the following specifications one to three:

[0010] Specification 1: The width of the outer wall section of the flat straight pipe is 16mm, the length of the outer wall section of the flat straight pipe is 24mm, and the wall thickness of the flat straight pipe is 2mm.

[0011] Specification 2: The width of the outer wall section of the flat straight pipe is 20mm, the length of the outer wall section of the flat straight pipe is 29mm, and the wall thickness of the flat straight pipe is 2mm;

[0012] Specification 3: The width of the outer wall section of the flat straight pipe is 20mm, the length of the outer wall section of the flat straight pipe is 49mm, and the wall thickness of the flat straight pipe is 3mm.

[0013] Optionally, the device also includes a vertical elbow, wherein both sides of the vertical elbow have flat, round interfaces with inner diameters identical to the outer wall diameter of the flat, straight pipe. One interface of the vertical elbow is fitted and fixed to one end of a flat, straight pipe, and the other interface is fitted and fixed to one end of a flat, straight pipe in an adjacent plane. The flat, straight pipes connected to both ends of the vertical elbow are arranged at a 90-degree angle. A through-channel connects the two ends of the vertical elbow, and this through-channel communicates with the inner diameters of the flat, straight pipes connected to both sides.

[0014] Vertical elbows and flat straight pipes connected to both sides can be jointly embedded in two adjacent walls, two adjacent walls and the base slab, or two adjacent walls and the top slab of a modular building. The specifications of the vertical elbows are matched with the specifications of the flat straight pipes, and the materials of the vertical elbows are metal or plastic.

[0015] Optionally, the device also includes a transverse elbow, wherein the interfaces on both sides of the transverse elbow are flat and round, and the inner diameter of the elbow is the same as the outer diameter of the flat straight pipe. The interfaces on both sides of the transverse elbow are respectively fitted and fixed to one end of a flat straight pipe, and the flat straight pipes connected to the two ends of the transverse elbow are arranged at 90 degrees or 45 degrees. A through channel connects the two ends of the transverse elbow, and this through channel communicates with the inner diameter of the flat straight pipes connected to both sides.

[0016] The horizontal elbow and the flat straight pipes connected on both sides can be embedded together in the walls / floor slabs / roof slabs of modular buildings. The specifications of the horizontal elbow are matched with the specifications of the flat straight pipes, and the material of the horizontal elbow is metal or plastic.

[0017] Optionally, the device also includes a bending elbow, wherein both sides of the bending elbow have flat, round interfaces with inner diameters the same as the outer wall diameter of the flat, straight pipe. The interfaces on both sides of the bending elbow are respectively fitted and fixed to one end of a flat, straight pipe and span across another flat, straight pipe. A through-channel connects the two ends of the bending elbow, and this through-channel communicates with the inner diameters of the flat, straight pipes connected on both sides.

[0018] The bendable elbow, along with the flat straight pipes connected to both sides and the other flat straight pipe spanning it, can be embedded in the walls / floor / roof of a modular building. The specifications of the bendable elbow are matched with those of the flat straight pipe, and the bendable elbow is made of metal or plastic.

[0019] Optionally, the device also includes a circular pipe and a reducing adapter. The outer wall and inner bore of the circular pipe have circular cross-sections. One end of the reducing adapter is a circular head, and the other end is a flattened oval head. The cross-sectional shape of the circular head matches the cross-sectional shape of the circular pipe, and the inner bore size of the circular head is the same as the outer wall size of the circular pipe. The cross-sectional shape of the flattened oval head matches the cross-sectional shape of the flattened straight pipe, and the inner bore size of the flattened oval head is the same as the outer wall size of the flattened straight pipe. The circular head of the reducing adapter is fitted and fixed to one end of the circular pipe, and the flattened oval head is fitted and fixed to one end of the flattened straight pipe. The reducing adapter has a through channel extending from the circular head end to the flattened oval head end, and this through channel communicates with the inner bores of both the circular pipe and the flattened straight pipe.

[0020] Both the round pipe and the reducing adapter can be embedded together with the flat straight pipe in the top / wall / bottom slab of the modular building. The round pipe and the reducing adapter are made of metal or plastic.

[0021] Alternatively, the specifications of the reducing adapter can be selected from the following specifications one to three:

[0022] Specification 1: The diameter of the inner hole of the round head is 20mm, the width of the inner hole of the flat round head is 16mm, the length of the inner hole of the flat round head is 24mm, and the wall thickness of the reducing adapter is 2mm.

[0023] Specification 2: The diameter of the inner hole of the round head is 25mm, the width of the inner hole of the flat round head (62) is 20mm, the length of the inner hole of the flat round head is 29mm, and the wall thickness of the reducing adapter is 2mm.

[0024] Specification 3: The diameter of the inner hole of the round head is 32mm, the width of the inner hole of the flat round head is 20mm, the length of the inner hole of the flat round head is 49mm, and the wall thickness of the reducing adapter is 3mm.

[0025] Optionally, it also includes a first electrical box, the thickness of which can be selected between 60mm and 100mm, and the interface of the first electrical box is a common circular interface. The first electrical box is connected to the end of the circular tube away from the reducer via a metal lock nut or a plastic cup comb.

[0026] The first electrical box, along with the round pipe, reducing adapter, and flat straight pipe, can be embedded in the wall of the modular building, and the thickness direction of the first electrical box is parallel to the thickness direction of the wall.

[0027] Optionally, the device also includes a straight connector, wherein the interfaces on both sides of the straight connector are identical, both being flat and round with an inner diameter identical to the outer wall size of the flat straight tube. A limiting section with an inner diameter smaller than the outer wall size of the flat straight tube is provided between the interfaces on both sides of the straight connector. The interfaces on both sides of the straight connector are respectively fitted and fixed to a flat straight tube, and the two flat straight tubes abut against the side walls at both ends of the limiting section. A through channel connects the two ends of the straight connector, and this through channel communicates with the inner diameter of the flat straight tubes connected on both sides.

[0028] The straight connector and the flat straight pipe connected to both sides can be buried together in the wall / floor / roof of the modular building. The specifications of the straight connector are matched with the specifications of the flat straight pipe. The material of the straight connector is metal or plastic.

[0029] Optionally, the system also includes a second electrical box and a first through-hole connector. The thickness of the second electrical box can be selected between 60mm and 100mm, and the interface of the second electrical box is a flat oval interface, the size of which is the same as the outer wall size of the flat straight pipe. The first through-hole connector has a first large-diameter section and a first small-diameter section. The outer wall size of the first large-diameter section is larger than the size of the interface of the second electrical box, and the outer wall size of the first small-diameter section is the same as the outer wall size of the flat straight pipe. The end of the through connector away from the flat straight pipe is fitted and fixed onto the first small-diameter section of the first through-hole connector, and the first small-diameter section passes through the interface of the second electrical box. The inner wall surface of the interface of the second electrical box abuts against the side wall of the first large-diameter section on the first through-hole connector, and the outer wall surface of the interface of the second electrical box abuts against the side wall of the through connector. The two ends of the first through-hole connector have a through channel that communicates with the inner holes of the through connectors connected to both ends and the interior of the second electrical box.

[0030] The second electrical box and the first plug-in connector, along with the straight connector and flat straight pipe, can be embedded in the wall of the modular building. The thickness direction of the second electrical box is parallel to the thickness direction of the wall. The specifications of the interface of the second electrical box and the specifications of the first plug-in connector are matched with the specifications of the straight connector and flat straight pipe. The material of the first plug-in connector is metal or plastic.

[0031] Optionally, the device also includes a third electrical box, a second through-hole connector, and a through-hole connector sleeve. The thickness of the third electrical box can be selected between 60mm and 100mm, and the interface of the third electrical box is a flat oval interface. The second through-hole connector has a second large-diameter section and a second small-diameter section. The outer wall dimension of the second large-diameter section is larger than the dimension at the interface of the third electrical box. The inner diameter dimension of the second small-diameter section is the same as the outer wall dimension of the flat straight pipe, and the outer wall dimension of the second small-diameter section is the same as the dimension at the interface of the third electrical box. The inner diameter dimension of the through-hole connector sleeve is the same as the outer wall dimension of the second small-diameter section of the second through-hole connector. The second small-diameter section of the second through-hole connector passes through the interface of the third electrical box and is sleeved and fixed to a flat straight pipe. The through-hole connector sleeve is sleeved and fixed to the second small-diameter section of the second through-hole connector. The inner wall of the third electrical box interface abuts against the side wall of the second large-diameter section of the second straight-insertion connector, and the outer wall of the third electrical box interface abuts against the side wall of the sleeve of the straight-insertion connector. The two ends of the second straight-insertion connector have a through channel that communicates with both ends of the connector and the interior of the third electrical box.

[0032] The third electrical box, the second direct-insertion connector and the direct-insertion connector sleeve, and the flat straight pipe can be buried together in the wall of the modular building, and the thickness direction of the third electrical box is parallel to the thickness direction of the wall. The specifications of the second direct-insertion connector and the direct-insertion connector sleeve are matched with the specifications of the flat straight pipe and the interface of the third electrical box. The material of the second direct-insertion connector and the direct-insertion connector sleeve is metal or plastic.

[0033] Optionally, the interface size on the third electrical box is a fixed size, and different specifications of flat straight pipes can be adapted by adjusting the inner hole size of the second small diameter section of the second straight plug connector.

[0034] (III) Beneficial Effects

[0035] The beneficial effects of this utility model are:

[0036] This utility model discloses an electrical conduit system for modular buildings. It modifies the traditional circular pipe cross-section by designing a flattened circular cross-section, ensuring the width of the flattened circular cross-section does not exceed 25mm. While maintaining a cross-sectional area equal to or greater than the original cross-sectional area, the length is correspondingly increased. This structural design solves the problem of traditional circular pipes with diameters greater than 25mm being unsuitable for installation in modular buildings. It satisfies both the pipe cross-sectional throughput requirements and the maximum embedment height limitations in modular buildings, allowing the electrical conduit system to be integrated seamlessly with the modular building structure and improving construction efficiency. Attached Figure Description

[0037] Figure 1 This is a front view of a flat straight pipe in Embodiment 1 of an electrical conduit system for modular buildings according to this utility model;

[0038] Figure 2 for Figure 1 The cross-sectional view of the flat straight pipe shown;

[0039] Figure 3 This is a schematic diagram of Embodiment 2 of an electrical conduit system for modular buildings according to the present invention;

[0040] Figure 4 for Figure 3 The front view of the vertical bend shown;

[0041] Figure 5 for Figure 3 The cross-sectional view of the interfaces at both ends of the vertical bend shown;

[0042] Figure 6 for Figure 3 The bottom view of the vertical bend shown;

[0043] Figure 7This is a schematic diagram of an electrical conduit system for modular buildings according to Embodiment 3 of the present invention, arranged at a 90-degree angle.

[0044] Figure 8 This is a schematic diagram of an electrical conduit system for modular buildings according to Embodiment 3 of the present invention, arranged at a 45-degree angle.

[0045] Figure 9 for Figure 7 The front view of the transverse elbow shown;

[0046] Figure 10 for Figure 7 The bottom view of the transverse bend shown;

[0047] Figure 11 for Figure 8 The front view of the transverse elbow shown;

[0048] Figure 12 for Figure 8 The bottom view of the transverse bend shown;

[0049] Figure 13 for Figure 7 and Figure 8 The cross-sectional view of the interfaces at both ends of the transverse elbow shown;

[0050] Figure 14 This is a schematic diagram of embodiment 4 of the electrical conduit system for modular buildings according to the present invention;

[0051] Figure 15 for Figure 14 The front view of the bending elbow shown;

[0052] Figure 16 for Figure 14 The cross-sectional view of the interfaces at both ends of the bend shown;

[0053] Figure 17 for Figure 14 The top view of the bending elbow shown;

[0054] Figure 18 This is a schematic diagram of embodiment 5 of the electrical conduit system for modular buildings according to the present invention;

[0055] Figure 19 for Figure 18 Front view of the reducing adapter shown;

[0056] Figure 20 for Figure 18 The cross-sectional view of the circular end of the reducing adapter shown;

[0057] Figure 21 for Figure 18The cross-sectional view of the flat, round end of the variable diameter adapter shown in the figure;

[0058] Figure 22 This is a schematic diagram of embodiment 6 of the electrical conduit system for modular buildings according to the present invention;

[0059] Figure 23 for Figure 22 A schematic diagram of the interfaces of the first electrical box in the middle;

[0060] Figure 24 This is a schematic diagram of embodiment 7 of the electrical conduit system for modular buildings according to the present invention;

[0061] Figure 25 for Figure 24 The front sectional view of the straight connector shown;

[0062] Figure 26 for Figure 24 The cross-sectional view of the interfaces at both ends of the straight connector shown;

[0063] Figure 27 for Figure 24 The cross-sectional view of the straight-through connector limiting section shown;

[0064] Figure 28 for Figure 24 A top view of the straight connector shown;

[0065] Figure 29 This is a schematic diagram of embodiment 8 of the electrical conduit system for modular buildings according to the present invention;

[0066] Figure 30 for Figure 29 Interface diagram of the second electrical box;

[0067] Figure 31 for Figure 29 A schematic diagram of the first through-hole connector;

[0068] Figure 32 for Figure 31 Cross-sectional view of the first large diameter section of the first through-hole connector;

[0069] Figure 33 for Figure 31 Cross-sectional view of the first minor diameter section of the first straight-through connector;

[0070] Figure 34 This is a schematic diagram of embodiment 9 of the electrical conduit system for modular buildings according to the present invention;

[0071] Figure 35 for Figure 34 Interface diagram of the third electrical box;

[0072] Figure 36 for Figure 34 A schematic diagram of the second through-hole connector;

[0073] Figure 37 for Figure 31 Cross-sectional view of the second large diameter section of the second straight-insertion connector;

[0074] Figure 38 for Figure 31 Cross-sectional view of the second minor diameter section of the second straight-insertion connector;

[0075] Figure 39 for Figure 34 Schematic diagram of a straight-insertion connector sleeve;

[0076] Figure 40 for Figure 34 Cross-sectional view of the straight-insertion connector sleeve;

[0077] Figure 41 for Figure 34 A schematic diagram showing the second straight-insertion connector integrally formed with the flat straight-through pipe.

[0078] [Explanation of Labels in the Attached Image]

[0079] 1: Flat straight pipe; A1: Width of the outer wall section of the flat straight pipe; B1: Length of the outer wall section of the flat straight pipe; t1: Wall thickness of the flat straight pipe;

[0080] 2: Vertical elbow; A2: Width of the inner hole section at both ends of the vertical elbow; B2: Length of the inner hole section at both ends of the vertical elbow; t2: Wall thickness of the vertical elbow;

[0081] 3: Transverse elbow; A3: Width of the inner hole section at both ends of the transverse elbow; B3: Length of the inner hole section at both ends of the transverse elbow; t3: Wall thickness of the transverse elbow;

[0082] 4: Bent elbow; A4: Width of the inner hole section at both ends of the bent elbow; B4: Length of the inner hole section at both ends of the bent elbow; t4: Wall thickness of the bent elbow; H: Height of the bent elbow;

[0083] 5: Round tube;

[0084] 6: Adapter with reducing diameter; 61: Round head; 62: Flat round head; D: Diameter of the inner hole section of the round head; A5: Width of the inner hole section of the flat round head; B5: Length of the inner hole section of the flat round head; t5: Wall thickness of the adapter with reducing diameter.

[0085] 7: First electrical box;

[0086] 8: Straight connector; 81: Limiting section; A6: Width of the inner hole cross-section at both ends of the straight connector; B6: Length of the inner hole cross-section at both ends of the straight connector; t6: Wall thickness of the straight connector; A7: Width of the inner hole cross-section of the limiting section; B7: Length of the inner hole cross-section of the limiting section; t7: Wall thickness of the limiting section; E: Length of the limiting section;

[0087] 9: Second electrical box;

[0088] 10: First through-hole connector; 101: First large diameter section; 102: First small diameter section; A8: Width of the outer wall of the first large diameter section; B8: Length of the outer wall of the first large diameter section; t8: Wall thickness of the first large diameter section; A9: Width of the outer wall of the first small diameter section; B9: Length of the outer wall of the first small diameter section; t9: Wall thickness of the first small diameter section;

[0089] 11: Third electrical box;

[0090] 12: Second straight-insertion connector; 121: Second large-diameter section; 122: Second small-diameter section; A10: Width of the outer wall of the second large-diameter section; B10: Length of the outer wall of the second large-diameter section; A11: Width of the inner hole of the second large-diameter section; B11: Length of the inner hole of the second large-diameter section; A12: Width of the outer wall of the second small-diameter section; B12: Length of the outer wall of the second small-diameter section; A13: Width of the inner hole of the second small-diameter section; B13: Length of the inner hole of the second small-diameter section;

[0091] 13: Straight-insertion connector sleeve; A14: Width of the inner hole of the straight-insertion connector sleeve; B14: Length of the inner hole of the straight-insertion connector sleeve; t14: Wall thickness of the straight-insertion connector sleeve. Detailed Implementation

[0092] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0093] This utility model proposes an electrical conduit system for modular buildings, which changes the traditional round pipe cross-section to a flattened round cross-section, making the width of the flattened round cross-section less than or equal to 20mm, and correspondingly increasing the length. This solves the problem that traditional round pipes with a diameter greater than or equal to 25mm are unsuitable for installation in modular buildings due to the special nature of prefabricated building construction processes, especially on thin-shell walls. The flat, straight pipe shown in this utility model can meet the requirements for inserting high-voltage power lines (i.e., the cross-sectional area of ​​a traditional round pipe with a diameter of approximately 32mm and a wall thickness of about 2mm-3mm), and also meets the restrictions on the pre-embedded height of conduits in modular buildings. This allows the electrical conduit system to be integrated with the modular building, thereby improving overall construction efficiency.

[0094] 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.

[0095] Example 1:

[0096] Reference Figure 1 and Figure 2 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1. The outer wall and inner hole of the flat straight pipe 1 have flat circular cross-sections. The width of the flat circular cross-section of the outer wall is less than or equal to 20 mm. The inner hole can accommodate at least 3 wires, and the total cross-sectional area of ​​the wires is less than 40% of the cross-sectional area of ​​the inner hole. The width of the flat circular cross-section of the outer wall and the flat circular cross-section of the inner hole are the same as the diameter of the semi-circular regions at both ends of the cross-section. The flat straight pipe 1 is a pipe with uniform wall thickness. Simultaneously, the flat straight pipe 1 can be embedded in the roof slab of a modular building, with the width direction of its cross-section parallel to the thickness direction of the roof slab during installation; the flat straight pipe 1 can also be embedded in the walls of a modular building, with the width direction of its cross-section parallel to the thickness direction of the wall; and the flat straight pipe 1 can also be embedded in the floor slab of a modular building, with the width direction of its cross-section parallel to the thickness direction of the floor slab. The flat straight pipe 1 is made of metal or plastic. It should be noted that although the minimum length of the flat straight pipe 1 is limited by the requirement that its inner hole can accommodate at least three wires, and the total cross-sectional area of ​​the wires is less than 40% of the inner hole's cross-sectional area, its maximum length should also meet practical needs, i.e., it cannot exceed the maximum range of the wall it is embedded in, ensuring that it can be pre-embedded in the roof / wall / floor slab of the modular building. In this embodiment, the width dimension A1 of the outer wall cross-section of the flat straight pipe 1 is 16mm-20mm, the length dimension B1 of the outer wall cross-section of the flat straight pipe 1 is 16mm-83mm, and the wall thickness t1 of the flat straight pipe 1 is greater than or equal to 1mm.

[0097] When using, it is preferable to select from the following specifications:

[0098] Specification 1: The width A1 of the outer wall section of the flat straight pipe 1 is 16mm, the length B1 of the outer wall section of the flat straight pipe 1 is 24mm, and the wall thickness t1 of the flat straight pipe 1 is 2mm.

[0099] Specification 2: The width A1 of the outer wall section of the flat straight pipe 1 is 20mm, the length B1 of the outer wall section of the flat straight pipe 1 is 29mm, and the wall thickness t1 of the flat straight pipe 1 is 2mm.

[0100] Specification 3: The width A1 of the outer wall section of the flat straight pipe 1 is 20mm, the length B1 of the outer wall section of the flat straight pipe 1 is 49mm, and the wall thickness t1 of the flat straight pipe 1 is 3mm.

[0101] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of flat straight pipe 1 according to actual needs. At the same time, the cross-section of the flat straight pipe 1 is not necessarily a flat oval shape with the same width dimension as the diameter dimension of the semi-circular area at both ends. It can also be a flat oval cross-section of other shapes, but it should be ensured that it can be buried in modular buildings and that the inner hole can be used for wires to pass through.

[0102] This embodiment changes the traditional circular cross-section of the pipe to a flattened circular cross-section, reducing the cross-sectional width. While ensuring that the cross-sectional area is greater than or equal to the original cross-sectional area, the length is correspondingly increased. This satisfies the pipe cross-sectional throughput requirements, ensuring the insertion of high-voltage power lines, and also meets the limitations of pipe diameter and pre-embedded height in modular buildings. It solves the problem that traditional circular pipes with a diameter of 25mm or greater are not suitable for installation in modular buildings due to the special nature of prefabricated building construction processes. This allows the electrical conduit system to be integrated with the modular building, improving construction efficiency.

[0103] Example 2:

[0104] Reference Figures 3 to 6 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1 and a vertical elbow 2. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0105] This embodiment is applicable to use between two adjacent walls that are perpendicular to each other, between walls and a top plate that are perpendicular to each other, and between walls and a bottom plate that are perpendicular to each other.

[0106] The interfaces on both sides of the vertical elbow 2 are flat and round, with the inner diameter matching the outer diameter of the flat straight pipe 1. One interface of the vertical elbow 2 is fitted and fixed to one end of a flat straight pipe 1, and the other interface is fitted and fixed to one end of another flat straight pipe 1. The flat straight pipes 1 connected to both ends of the vertical elbow 2 are arranged at a 90-degree angle. There is a through channel connecting the two ends of the vertical elbow 2, which communicates with the inner diameter of the flat straight pipes 1 connected to both sides.

[0107] The two flat straight pipes 1 connected to both sides of the vertical elbow 2 are respectively embedded in two adjacent perpendicular walls of the modular building, or respectively embedded in adjacent perpendicular walls and the base plate of the modular building, or respectively embedded in adjacent perpendicular walls and the top plate. The vertical elbow 2 can be embedded in the same wall / base plate / top plate as the flat straight pipe 1 it is connected to, or the vertical elbow 2 can be embedded in two perpendicular walls / wall and base plate / wall and top plate at the same time.

[0108] In summary, the vertical elbow 2 and the flat straight pipes 1 connected on both sides can be jointly embedded in two adjacent walls of a modular building, or in two adjacent walls and the base slab, or in two adjacent walls and the top slab. The specifications of the vertical elbow 2 are matched with the specifications of the flat straight pipe 1, and the material of the vertical elbow 2 is metal or plastic.

[0109] When using, the vertical elbow 2 is preferably selected from the following specifications:

[0110] Specification 1: The width A2 of the inner hole section at both ends of the vertical elbow 2 is 16mm, the length B2 of the inner hole section at both ends of the vertical elbow 2 is 24mm, the wall thickness t2 of the vertical elbow 2 is 2mm, and the interface at both ends of the vertical elbow 2 is 90 degrees.

[0111] Specification 2: The width A2 of the inner hole section at both ends of the vertical elbow 2 is 20mm, the length B2 of the inner hole section at both ends of the vertical elbow 2 is 29mm, the wall thickness t2 of the vertical elbow 2 is 2mm, and the interface at both ends of the vertical elbow 2 is 90 degrees.

[0112] Specification 3: The width A2 of the inner hole section at both ends of the vertical elbow 2 is 20mm, the length B2 of the inner hole section at both ends of the vertical elbow 2 is 49mm, the wall thickness t2 of the vertical elbow 2 is 3mm, and the interface at both ends of the vertical elbow 2 is 90 degrees.

[0113] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of vertical elbows 2 according to actual needs, as long as the cross-sections of both ends match the connected flat straight pipe 1. At the same time, the transition section (i.e., the middle turning area) between the two ends of the vertical elbow 2 preferably adopts the same size as the cross-sectional size of the connected flat straight pipe 1, and uses the smallest possible bending radius to save the space occupied by the vertical elbow 2. Of course, other forms of turning can also be used, but it must be ensured that it can be buried in modular buildings and that the cross-sectional throughput is greater than or equal to that of the connected flat straight pipe 1.

[0114] In this embodiment, a corresponding vertical bend 2 is provided for the flat straight pipe 1, so that the two flat straight pipes 1 between two adjacent perpendicular walls, between two perpendicular walls and a top plate, and between two perpendicular walls and a bottom plate can be turned and connected. At the same time, the vertical bend 2 and the two flat straight pipes 1 can be buried together in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0115] Example 3:

[0116] Reference Figures 7 to 13 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1 and a transverse elbow 3. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0117] The interfaces on both sides of the transverse elbow 3 are flat and round, with the inner diameter matching the outer diameter of the flat straight pipe 1. The interfaces on both sides of the transverse elbow 3 are respectively fitted and fixed to one end of a flat straight pipe 7. The flat straight pipes 1 connected to both ends of the transverse elbow 3 are arranged at 90 degrees or 45 degrees. A through channel connects the two ends of the transverse elbow 3, and this through channel communicates with the inner diameter of the flat straight pipes 1 connected to both sides.

[0118] The transverse elbow 3 and the flat straight pipes 1 connected on both sides can be jointly embedded in the same wall of the modular building, or jointly embedded in the same base slab of the modular building, or jointly embedded in the same roof slab of the modular building. The specifications of the transverse elbow 3 are matched with the specifications of the flat straight pipe 1, and the material of the transverse elbow 3 is metal or plastic.

[0119] When using, the lateral elbow 3 is preferably selected from the following specifications:

[0120] Specification 1: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 16mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 24mm, the wall thickness t3 of the transverse elbow 3 is 2mm, and the interface at both ends of the transverse elbow 3 is 90 degrees.

[0121] Specification 2: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 20mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 29mm, the wall thickness t3 of the transverse elbow 3 is 2mm, and the interface at both ends of the transverse elbow 3 is 90 degrees.

[0122] Specification 3: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 20mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 49mm, the wall thickness t3 of the transverse elbow 3 is 3mm, and the interface at both ends of the transverse elbow 3 is 90 degrees.

[0123] Specification 4: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 16mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 24mm, the wall thickness t3 of the transverse elbow 3 is 2mm, and the interface at both ends of the transverse elbow 3 is at a 45-degree angle.

[0124] Specification 5: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 20mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 29mm, the wall thickness t3 of the transverse elbow 3 is 2mm, and the interface at both ends of the transverse elbow 3 is at a 45-degree angle.

[0125] Specification 6: The width A3 of the inner hole section at both ends of the transverse elbow 3 is 20mm, the length B3 of the inner hole section at both ends of the transverse elbow 3 is 49mm, the wall thickness t3 of the transverse elbow 3 is 3mm, and the interface at both ends of the transverse elbow 3 is at a 45-degree angle.

[0126] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of transverse elbows 3 according to actual needs, as long as the cross-sections of both ends match the connected flat straight pipe 1. At the same time, the transition section (i.e., the middle turning area) between the two ends of the transverse elbow 3 preferably adopts the same size as the cross-sectional size of the connected flat straight pipe 1, and uses the smallest possible bending radius to save the space occupied by the transverse elbow 3. Of course, other forms of turning can also be used, but it must be ensured that it can be embedded in modular buildings and that the cross-sectional throughput is greater than or equal to that of the connected flat straight pipe 1.

[0127] In this embodiment, a corresponding transverse elbow 3 is provided for the flat straight pipe 1, so that two flat straight pipes 1 at different angles in the same wall / base plate / top plate can be turned and connected. At the same time, the transverse elbow 3 and the two flat straight pipes 1 at different angles can be buried together in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0128] Example 4:

[0129] Reference Figures 14 to 17 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1 and a bend elbow 4. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0130] The interfaces on both sides of the bending elbow 4 are flat and round, and the inner hole size is the same as the outer wall size of the flat straight pipe 1. The interfaces on both sides of the bending elbow 4 are respectively fitted and fixed to one end of a flat straight pipe 1 and span across another flat straight pipe 1. There is a through channel connecting the two ends of the bending elbow 4, and this through channel is connected to the inner hole of the flat straight pipe 1 connected on both sides.

[0131] The bendable elbow 4, together with the flat straight pipes 1 connected to both sides and the other flat straight pipe 1 spanning it, can be jointly embedded in the same wall of the modular building, or in the same base slab of the modular building, or in the same roof slab of the modular building. The specifications of the bendable elbow 4 are matched with the specifications of the flat straight pipes 1, and the material of the bendable elbow 4 is metal or plastic.

[0132] When using, the following specifications are preferred for the bending elbow 4:

[0133] The width A4 of the inner hole cross-section at both ends of the bending elbow 4 is 20mm, the length B4 of the inner hole cross-section at both ends of the bending elbow 4 is 49mm, the wall thickness t4 of the bending elbow 4 is 3mm, the height of the bending elbow 4 is H, and the maximum size of the flat straight pipe 1 that can be installed on the bending elbow 4 is 20×49×3 (that is, the width A1 of the outer wall cross-section of the flat straight pipe 1 is 20mm, the length B1 of the outer wall cross-section of the flat straight pipe 1 is 49mm, and the wall thickness t1 of the flat straight pipe 1 is 3mm).

[0134] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of the bend elbow 4 according to actual needs, as long as the cross-sections of both ends match the connected flat straight pipe 1. At the same time, the transition section (i.e., the overlay area) between the two ends of the bend elbow 4 preferably adopts the same cross-section as the connected flat straight pipe 1, and the maximum pipe diameter that can be overlaid should also be selected to be the same size as the connected flat straight pipe 1. Of course, the pipe cross-section and the maximum pipe diameter that can be overlaid in the transition section (i.e., the overlay area) can also be selected in other forms and sizes, but it must be ensured that it can be buried in the modular building and the cross-sectional throughput is greater than or equal to that of the connected flat straight pipe 1.

[0135] In this embodiment, a corresponding bend 4 is provided for the flat straight pipe 1, so that two colliding flat straight pipes 1 in the same wall / base plate / top plate can avoid each other through the bend 4. At the same time, the bend 4, the flat straight pipes 1 connected at both ends, and the flat straight pipes 1 that are spread out can be buried together in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0136] Example 5:

[0137] Reference Figures 18 to 21 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1, a round pipe 5 and a reducing adapter 6. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0138] In this embodiment, the outer wall and inner bore of the circular tube 5 have circular cross-sections. One end of the reducing adapter 6 is a circular head 61, and the other end is a flattened oval head 62. The cross-sectional shape of the circular head 61 matches the cross-sectional shape of the circular tube 5, and the inner bore size of the circular head 61 is the same as the outer wall size of the circular tube 5. The cross-sectional shape of the flattened oval head 62 matches the cross-sectional shape of the flat straight tube 1, and the inner bore size of the flattened oval head 62 is the same as the outer wall size of the flat straight tube 1. The circular head 61 is fitted and fixed to one end of the circular tube 5, and the flattened oval head 62 is fitted and fixed to one end of the flat straight tube 1. The reducing adapter 6 has a through channel extending from the circular head 61 end to the flattened oval head 62 end, and this through channel communicates with the inner bores of the circular tube 5 and the flat straight tube 1. The circular tube 5 and the reducing adapter 6, together with the flat straight tube 1, can be embedded in the top / wall / bottom slab of a modular building. The round tube 5 and the reducing adapter 6 are made of metal or plastic.

[0139] When in use, the reducing adapter 6 is preferably selected from the following specifications:

[0140] Specification 1: The diameter D of the inner hole of the round head 61 is 20mm, the width A5 of the inner hole of the flat round head 62 is 16mm, the length B5 of the inner hole of the flat round head 62 is 24mm, and the wall thickness t5 of the reducing adapter 6 is 2mm.

[0141] Specification 2: The diameter D of the inner hole of the round head 61 is 25mm, the width A5 of the inner hole of the flat round head 62 is 20mm, the length B5 of the inner hole of the flat round head 62 is 29mm, and the wall thickness t5 of the reducing adapter 6 is 2mm.

[0142] Specification 3: The diameter D of the inner hole of the round head 61 is 32mm, the width A5 of the inner hole of the flat round head 62 is 20mm, the length B5 of the inner hole of the flat round head 62 is 49mm, and the wall thickness t5 of the reducing adapter 6 is 3mm.

[0143] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of the reducing adapter 6 according to actual needs, as long as the cross-sections of both ends match the connected round pipe 5 and flat straight pipe 1. At the same time, the transition section between the two ends of the reducing adapter 6 (i.e., the area between the round head 61 end and the flat round head 62 end) preferably adopts a tapering form. Of course, other forms of transition can also be used, but it must be ensured that it can be embedded in modular buildings and that the cross-sectional throughput is greater than or equal to that of the connected flat straight pipe 1.

[0144] In this embodiment, a corresponding reducing adapter 6 is provided for the flat straight pipe 1, so that the traditional round pipe 5 can be converted and connected with the flat straight pipe 1, making the flat straight pipe 1 more widely applicable. At the same time, the round pipe 5 and the flat straight pipe 1 can be buried together in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0145] Example 6:

[0146] Reference Figure 22 and Figure 23 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1, a round pipe 5, a reducing adapter 6 and a first electrical box 7. The flat straight pipe 1, the round pipe 5 and the reducing adapter 6 are the same as those in embodiment 5, and will not be described again here.

[0147] The thickness of the first electrical box 7 can be selected between 60mm and 100mm according to actual needs. The interface of the first electrical box 7 is a common circular interface. The first electrical box 7 is connected to the end of the circular tube 5 away from the reducer 6 through a metal lock nut connector or a plastic cup comb.

[0148] The first electrical box 7, along with the round pipe 5, the reducing adapter 6, and the flat straight pipe 1, can be embedded together in the wall of the modular building, and the thickness direction of the first electrical box 7 is parallel to the thickness direction of the wall.

[0149] In actual construction, when the round pipe 5 needs to be connected to the flat straight pipe 1, or when the flat straight pipe 1 needs to be connected to the electrical box / junction box with a traditional round interface, the reducing adapter 6 can be used to convert between round and flat pipes.

[0150] In this embodiment, the first electrical box 7 is configured with a selectable thickness, which can be selected according to the required wall thickness. At the same time, a variable diameter adapter 6 is provided to convert the round pipe 5 connected to the interface of the first electrical box 7 to the flat straight pipe 1. This allows the first electrical box 7, the round pipe 5, the variable diameter adapter 6, and the flat straight pipe 1 to be buried together in the modular building, which improves the integration of the modular building and increases construction efficiency.

[0151] Example 7:

[0152] Reference Figures 24 to 28 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1 and a straight connector 8. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0153] The interfaces on both sides of the straight connector 8 are identical, both being flat and round with inner diameters matching the outer wall size of the flat straight tube 1. A limiting section 81, with an inner diameter equal to the outer wall size of the flat straight tube 1, is provided between the interfaces on both sides of the straight connector 8. Each interface on both sides of the straight connector 8 is fitted and fixed to a flat straight tube 1, with the two flat straight tubes 1 abutting against both sides of the limiting section 81. A through channel connects the two ends of the straight connector 8, and this through channel communicates with the inner diameters of the flat straight tubes 1 connected on both sides.

[0154] The straight connector 8 and the flat straight pipes 1 connected on both sides can be embedded together in the walls / floor slabs / roof slabs of modular buildings. The specifications of the straight connector 8 are matched with those of the flat straight pipes 1, and the material of the straight connector 8 is metal or plastic.

[0155] When in use, the straight connector 8 is preferably of the following specifications:

[0156] Specification 1: The width A6 of the inner hole cross-section at both ends of the straight connector 8 is 16mm, the length B6 of the inner hole cross-section at both ends of the straight connector 8 is 24mm, the wall thickness t6 of the straight connector 8 is 2mm, the width A7 of the inner hole cross-section of the limiting section 81 is 12mm, the length B7 of the inner hole cross-section of the limiting section 81 is 20mm, the length E of the limiting section 81 is 4mm, and the wall thickness t7 of the limiting section 81 is 4mm;

[0157] Specification 2: The width A6 of the inner hole cross-section at both ends of the straight connector 8 is 20mm, the length B6 of the inner hole cross-section at both ends of the straight connector 8 is 29mm, the wall thickness t6 of the straight connector 8 is 2mm, the width A7 of the inner hole cross-section of the limiting section 81 is 16mm, the length B7 of the inner hole cross-section of the limiting section 81 is 25mm, the length E of the limiting section 81 is 4mm, and the wall thickness t7 of the limiting section 81 is 4mm;

[0158] Specification 3: The width A6 of the inner hole cross-section at both ends of the straight connector 8 is 20mm, the length B6 of the inner hole cross-section at both ends of the straight connector 8 is 49mm, the wall thickness t6 of the straight connector 8 is 3mm, the width A7 of the inner hole cross-section of the limiting section 81 is 14mm, the length B7 of the inner hole cross-section of the limiting section 81 is 43mm, the length E of the limiting section 81 is 6mm, and the wall thickness t7 of the limiting section 81 is 6mm.

[0159] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of straight connectors 8 according to actual needs, as long as the interfaces at both ends match the cross-section of the connected flat straight pipe 1. At the same time, the inner hole size of the limiting section 81 between the interfaces at both ends of the straight connector 8 is preferably the same as the inner hole size of the connected flat straight pipe 1. Of course, the pipe cross-section of the limiting section 81 can also be selected in other forms and sizes, but it must be ensured that it can be buried in modular buildings and that the cross-sectional throughput is greater than or equal to that of the connected flat straight pipe 1, and that it can limit the installation of the flat straight pipe 1 to avoid the flat straight pipe 1 connected at both ends from penetrating into the straight connector 8 to a depth 1 that is too large or too small, thus affecting the installation strength.

[0160] In this embodiment, a corresponding straight connector 8 is provided for the flat straight pipe 1, so that two flat straight pipes 1 in the same direction in the same wall / base plate / top plate can be connected. At the same time, the straight connector 8 and the flat straight pipes 1 on both sides can be buried together in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0161] Example 8:

[0162] Reference Figures 29 to 33 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1, a straight connector 8, a second electrical box 9, and a first straight-through connector 10. The flat straight pipe 1 and the straight connector 8 are the same as in embodiment 7, and will not be described again here.

[0163] The thickness of the second electrical box 9 can be selected between 60mm and 100mm according to actual needs, and the interface of the second electrical box 9 is a flat oval interface, the opening size of which is the same as the outer wall size of the flat straight pipe 1.

[0164] The first straight-through connector 10 is provided with a first large-diameter section 101 and a first small-diameter section 102. The outer wall size of the first large-diameter section 101 is larger than the size of the interface of the second electrical box 9. The outer wall size of the first small-diameter section 102 is the same as the outer wall size of the flat straight pipe 1. That is, the opening size of the interface of the second electrical box 9, the outer wall size of the first small-diameter section 102 and the outer wall size of the flat straight pipe 1 are consistent.

[0165] During installation, the first small-diameter section 102 of the first plug-in connector 10 passes through the interface of the second electrical box 9, that is, the first small-diameter section 102 protrudes from the inside of the interface of the second electrical box 9. The end of the straight connector 8 away from the flat straight tube 1 is sleeved and fixed on the end of the first small-diameter section 102 that protrudes. The inner wall surface of the interface of the second electrical box 9 abuts against the side wall of the first large-diameter section 101 on the first plug-in connector 10, and the outer wall surface of the interface of the second electrical box 9 abuts against the side wall of the straight connector 8. The first plug-in connector 10 has a through channel connecting its two ends, which is connected to the inner hole of the straight connector 8 connected to its two ends and the interior of the second electrical box 9.

[0166] The second electrical box 9 and the first straight-through connector 10, together with the straight connector 8 and the flat straight pipe 1, can be embedded in the wall of the modular building. The thickness direction of the second electrical box 9 is parallel to the thickness direction of the wall. The specifications of the interface of the second electrical box 9 and the specifications of the first straight-through connector 10 are matched with the specifications of the straight connector 8 and the flat straight pipe 1. The material of the first straight-through connector 10 is metal or plastic.

[0167] When in use, the first through-hole connector 10 preferably has the following specifications:

[0168] The width A8 of the outer wall of the first major diameter section 101 is 26mm, the length B8 of the outer wall of the first major diameter section 101 is 55mm, the wall thickness t8 of the first major diameter section 101 is 3mm; the width A9 of the outer wall of the first minor diameter section 102 is 20mm, the length B9 of the outer wall of the first minor diameter section 102 is 49mm, and the wall thickness t9 of the first minor diameter section 102 is 3mm.

[0169] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of the first straight-insertion connector 10 according to actual needs, as long as it is compatible with the size of the straight connector 8 and the interface of the second electrical box 9. The outer wall shape of its first large-diameter section 101 can also be the same flat oval shape as the first small-diameter section 102 and the flat straight tube 1, or it can be other shapes, such as circles, polygons, etc., as long as its large-diameter section can abut against the inner wall at the interface of the second electrical box 9. At the same time, the size of the inner hole of the first large-diameter section 101 and the first small-diameter section 102 is preferably set to be the same as the size of the inner hole of the flat straight tube 1 to ensure the throughput of the inner hole.

[0170] This embodiment includes a second electrical box 9 and a first straight-through connector 10 adapted to the straight connector 8. The appropriate second electrical box 9 can be selected according to the required wall thickness. Furthermore, the second electrical box 9 is connected to the flat straight pipe 1 through the direct cooperation between the straight connector 8 and the first straight-through connector 10, which is very convenient. At the same time, the straight connector 8, the second electrical box 9, and the first straight-through connector 10 can all be buried together with the flat straight pipe 1 in the modular building, which improves the integration of the modular building and improves the construction efficiency.

[0171] Example 9:

[0172] Reference Figure 34 and Figure 41 This embodiment provides an electrical conduit system for modular buildings, which includes a flat straight pipe 1, a third electrical box 11, a second straight-insertion connector 12, and a straight-insertion connector sleeve 13. The flat straight pipe 1 is the same as in Embodiment 1, and will not be described again here.

[0173] The thickness of the third electrical box 11 can be selected between 60mm and 100mm according to actual needs, and the interface of the third electrical box 11 is a flat round interface.

[0174] The second through-hole connector 12 has a second large-diameter section 121 and a second small-diameter section 122. The outer wall dimension of the second large-diameter section 121 is larger than the interface dimension of the third electrical box 11. The inner hole dimension of the second small-diameter section 122 is the same as the outer wall dimension of the flat straight pipe 1, and the outer wall dimension of the second small-diameter section 122 is the same as the interface dimension of the third electrical box 11. The inner hole dimension of the through-hole connector sleeve 13 is the same as the outer wall dimension of the second small-diameter section 122 of the second through-hole connector 12.

[0175] During installation, the second small-diameter section 122 of the second through-hole connector 12 passes through the interface of the third electrical box 11, that is, the second small-diameter section 122 protrudes from the inside of the interface of the third electrical box 11, and one end of the protruding section is fitted and fixed to a flat straight tube 1. Then, the through-hole connector sleeve 13 is fitted and fixed to the second small-diameter section 122 of the second through-hole connector 12. The inner wall surface of the interface of the third electrical box 11 abuts against the side wall of the second large-diameter section 121 of the second through-hole connector 12, and the outer wall surface of the interface of the third electrical box 11 abuts against the side wall of the through-hole connector sleeve 13. The two ends of the second through-hole connector 12 have a through channel that communicates with both ends of the flat straight tube 1 and the interior of the third electrical box 11.

[0176] The third electrical box 11, the second direct-insertion connector 12, and the direct-insertion connector sleeve 13, together with the flat straight pipe 1, can be embedded in the wall of the modular building. The thickness direction of the third electrical box 11 is parallel to the thickness direction of the wall. The specifications of the second direct-insertion connector 12 and the direct-insertion connector sleeve 13 are matched with the specifications of the interface of the flat straight pipe 1 and the third electrical box 11. The materials of the second direct-insertion connector 12 and the direct-insertion connector sleeve 13 are metal or plastic.

[0177] To avoid inconvenience caused by too many interface sizes in the third electrical box 11, the interface sizes on the third electrical box 11 can be set to fixed sizes. Furthermore, the inner hole size of the second small diameter section 122 of the second straight-insertion connector 12 can be adjusted to adapt to flat straight pipes 1 of different specifications.

[0178] When in use, the second straight-insertion connector 12 preferably has the following specifications:

[0179] Specification 1: The width A10 of the outer wall of the second major diameter section 121 is 26mm, and the length B10 of the outer wall of the second major diameter section 121 is 55mm; the width A11 of the inner hole of the second major diameter section 121 is 16mm; the length B11 of the inner hole of the second major diameter section 121 is 24mm; the width A12 of the outer wall of the second minor diameter section 122 is 20mm, and the length B12 of the outer wall of the second minor diameter section 122 is 49mm; the width A13 of the inner hole of the second minor diameter section 122 is 16mm; the length B13 of the inner hole of the second minor diameter section 122 is 24mm.

[0180] Specification 2: The width A10 of the outer wall of the second major diameter section 121 is 26mm, and the length B10 of the outer wall of the second major diameter section 121 is 55mm; the width A11 of the inner hole of the second major diameter section 121 is 20mm; the length B11 of the inner hole of the second major diameter section 121 is 29mm; the width A12 of the outer wall of the second minor diameter section 122 is 20mm, and the length B12 of the outer wall of the second minor diameter section 122 is 49mm; the width A13 of the inner hole of the second minor diameter section 122 is 20mm; the length B13 of the inner hole of the second minor diameter section 122 is 29mm.

[0181] The preferred specifications for the straight-insertion connector sleeve 13 are as follows:

[0182] Specification 1: The width A14 of the inner hole of the straight-insertion connector sleeve 13 is 20mm, the length B14 of the inner hole of the straight-insertion connector sleeve 13 is 49mm, and the wall thickness t13 of the straight-insertion connector sleeve 13 is 3mm.

[0183] The straight-insertion connector sleeve 13 of this specification is also compatible with both specification one and specification two of the second straight-insertion connector 12.

[0184] Of course, this utility model is not limited to this. Those skilled in the art can set other specifications and sizes of the second straight-insertion connector 12 and the straight-insertion connector sleeve 13 according to actual needs, as long as they are compatible with the dimensions of the flat straight pipe 1 and the interface of the third electrical box 11. The outer wall shape of its second large-diameter section 121 can also be the same flat round shape as the second small-diameter section 122 and the flat straight pipe 1, or it can be other shapes, such as circles, polygons, etc., as long as its large-diameter section can abut against the inner wall at the interface of the third electrical box 11. At the same time, the connection between the second straight-insertion connector 12 and the flat straight pipe 1 can be in the form of insertion or bonding on site, or it can be in the form of pre-molded integral processing (such as...). Figure 41 ).

[0185] This embodiment includes a third electrical box 11 adapted to the flat straight pipe 1, a second direct-insertion connector 12, and a direct-insertion connector sleeve 13. The appropriate third electrical box 11 can be selected according to the required wall thickness. Furthermore, the third electrical box 11 is connected to the flat straight pipe 1 through the cooperation of the second direct-insertion connector 12 and the direct-insertion connector sleeve 13. The size of the interface of the third electrical box 11 can also be set to a fixed form. By adjusting the inner hole size of the second direct-insertion connector 12, it can be adapted to flat straight pipes 1 of different specifications, which is very convenient.

[0186] Meanwhile, the third electrical box 11, the second direct-insertion connector 12, and the direct-insertion connector sleeve 13 can all be buried together with the flat straight pipe 1 in the modular building, which improves the integration of the modular building and increases construction efficiency.

[0187] The electrical conduit system shown in this utility model, in actual use, uses flat straight pipes 1 with specifications of 20×29×2 (i.e., the width A1 of the outer wall section of flat straight pipe 1 is 20mm, the length B1 of the outer wall section of flat straight pipe 1 is 29mm, and the wall thickness t1 of flat straight pipe 1 is 2mm) and 20×49×3 (i.e., the width A1 of the outer wall section of flat straight pipe 1 is 20mm, the length B1 of the outer wall section of flat straight pipe 1 is 49mm, and the wall thickness t1 of flat straight pipe 1 is 3mm) and other pipe fittings of corresponding specifications. The following components are commonly used at the entrance of each module: vertical elbow 2, horizontal elbow 3, bend elbow 4, reducer 6, straight connector 8, first straight-through connector 10, second straight-through connector 12, and straight-through connector sleeve 13. The flat straight pipe 1 with specifications of 16×24×2 (i.e., the width A1 of the outer wall section of the flat straight pipe 1 is 16mm, the length B1 of the outer wall section of the flat straight pipe 1 is 20mm, and the wall thickness t1 of the flat straight pipe 1 is 2mm) and other corresponding pipe fittings are commonly used in prefabricated thin walls. Of course, this utility model is not limited to this; those skilled in the art can set other specifications of flat straight pipe 1 and other corresponding pipe fittings according to actual needs.

[0188] When the flat straight pipe 1 is connected to other pipe fittings of the same specification, it can be connected by direct insertion or by snap-fit ​​connection, etc. Those skilled in the art can freely choose the connection method according to actual needs. At the same time, the electrical conduit systems shown in Embodiments 1 to 9 are not exclusive, and those skilled in the art can freely combine and use Embodiments 1 to 9 according to actual needs.

[0189] To facilitate understanding, several use cases are briefly described below:

[0190] Scene 1:

[0191] A third electrical box 11 is installed in the wall at the entrance. The third electrical box 11 is connected to the flat straight pipe 1 through the second straight connector 12 and the straight connector sleeve 13, and extends along the wall to the top plate. A 90-degree vertical elbow 2 is used to connect the flat straight pipe 1 installed vertically in the wall to the flat straight pipe 1 installed horizontally in the top plate. The flat straight pipe 1 in the top plate is then turned by a 45-degree horizontal elbow 3 or a 90-degree horizontal elbow 3 to connect with other flat straight pipes 1 installed in the top plate. When two flat straight pipes 1 collide, if the pipe has a smaller diameter, they can be stacked directly on top of each other. If the pipe has a larger diameter, they can be avoided by bending elbow 4.

[0192] Scene 2:

[0193] If the electrical box used is not the third electrical box 11 with a flat round interface, but the first electrical box 7 with a traditional round interface, then the first electrical box 7 is buried in the wall at the entrance. The first electrical box 7 is connected to the round pipe 5 through a metal lock nut connector or a plastic cup comb. The end of the round pipe 5 away from the electrical box is connected to the round head 61 of the reducer 6. The flat round head 42 is connected to the flat straight pipe 1. The round pipe 5, the reducer 6 and the flat straight pipe 1 are all buried in the wall together with the first electrical box 7. The flat straight pipe 1 then extends along the wall to the top plate for other connections.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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. An electrical conduit system for modular buildings, characterized in that: The flat straight tube (1) is included. The cross-section of the outer wall and the inner hole of the flat straight tube (1) are both flat circular cross-sections. The width of the flat circular cross-section of the outer wall of the flat straight tube (1) is less than or equal to 20 mm. The inner hole of the flat straight tube (1) can accommodate at least 3 wires, and the total cross-sectional area of ​​the wires is less than 40% of the cross-sectional area of ​​the inner hole. The flat straight pipe (1) can be embedded in the top slab / wall / bottom slab of a modular building. When embedded, the width direction of the cross-section of the flat straight pipe (1) is parallel to the thickness direction of the embedded top slab / wall / bottom slab.

2. The electrical conduit system for modular buildings according to claim 1, characterized in that: The width of the flat circular cross-section of the outer wall of the flat straight pipe (1) and the width of the flat circular cross-section of the inner hole of the flat straight pipe (1) are the same as the diameter of the semi-circular regions at both ends of the cross-section. The flat straight pipe (1) is a pipe with equal wall thickness. The width of the outer wall cross-section of the flat straight tube (1) is 16mm-20mm; The length of the outer wall cross-section of the flat straight tube (1) is 16mm-83mm; The wall thickness of the flat straight tube (1) is greater than or equal to 1 mm; The flat straight tube (1) is made of metal or plastic.

3. The electrical conduit system for modular buildings according to claim 2, characterized in that: The specifications of the flat straight tube (1) can be selected from the following specifications one to three: Specification 1: The width of the outer wall section of the flat straight pipe (1) is 16mm, the length of the outer wall section of the flat straight pipe (1) is 24mm, and the wall thickness of the flat straight pipe (1) is 2mm; Specification 2: The width of the outer wall section of the flat straight pipe (1) is 20mm, the length of the outer wall section of the flat straight pipe (1) is 29mm, and the wall thickness of the flat straight pipe (1) is 2mm; Specification 3: The width of the outer wall section of the flat straight pipe (1) is 20mm, the length of the outer wall section of the flat straight pipe (1) is 49mm, and the wall thickness of the flat straight pipe (1) is 3mm.

4. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a vertical elbow (2), the interfaces on both sides of the vertical elbow (2) are flat and round and the inner hole size is the same as the outer wall size of the flat straight pipe (1); The interface on one side of the vertical bend (2) is sleeved and fixed to one end of the flat straight pipe (1), and the interface on the other side of the vertical bend (2) is sleeved and fixed to one end of the flat straight pipe (1) in another adjacent plane. The flat straight pipes (1) connected to both ends of the vertical elbow (2) are arranged at 90 degrees; The vertical bend (2) has a through channel between its two ends, and the through channel is connected to the inner hole of the flat straight pipe (1) connected on both sides; The vertical bend (2) and the flat straight pipe (1) connected to both sides can be jointly embedded in two adjacent walls of the modular building / two adjacent walls and the bottom plate / two adjacent walls and the top plate. The specifications of the vertical elbow (2) are matched with the specifications of the flat straight pipe (1); The vertical elbow (2) is made of metal or plastic.

5. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a transverse elbow (3), the interfaces on both sides of the transverse elbow (3) are flat and round and the inner hole size is the same as the outer wall size of the flat straight pipe (1); The interfaces on both sides of the transverse elbow (3) are respectively fitted and fixed to one end of the flat straight pipe (1); The flat straight pipes (1) connected to both ends of the transverse elbow (3) are arranged at 90 degrees or 45 degrees. The transverse elbow (3) has a through channel between its two ends, and the through channel is connected to the inner hole of the flat straight pipe (1) connected on both sides; The transverse elbow (3) and the flat straight pipe (1) connected to both sides can be jointly embedded in the wall / base / top of the modular building; The specifications of the transverse elbow (3) are matched with the specifications of the flat straight pipe (1); The material of the transverse elbow (3) is metal or plastic.

6. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a bending elbow (4), the interfaces on both sides of the bending elbow (4) are flat and round and the inner hole size is the same as the outer wall size of the flat straight pipe (1); The interfaces on both sides of the bending elbow (4) are respectively fitted and fixed to one end of one of the flat straight pipes (1) and straddled on the other flat straight pipe (1); The two ends of the bending elbow (4) have a through channel, which is connected to the inner hole of the flat straight pipe (1) connected on both sides. The bending elbow (4) and the flat straight pipe (1) connected to both sides and the other flat straight pipe (1) spanning across can be jointly embedded in the wall / base plate / top plate of the modular building. The specifications of the bending elbow (4) are matched with the specifications of the flat straight pipe (1); The bending elbow (4) is made of metal or plastic.

7. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a round pipe (5) and a reducing adapter (6); The outer wall and inner hole of the circular tube (5) are both circular cross sections; The reducing adapter (6) has a round head (61) at one end and a flat round head (62) at the other end; The cross-sectional shape of the circular head (61) matches the cross-sectional shape of the circular tube (5), and the inner hole size of the circular head (61) is the same as the outer wall size of the circular tube (5); The cross-sectional shape of the flat round head (62) matches the cross-sectional shape of the flat straight tube (1), and the inner hole size of the flat round head (62) is the same as the outer wall size of the flat straight tube (1); The circular head (61) is sleeved and fixed to one end of the circular tube (5), and the flat round head (62) is sleeved and fixed to one end of the flat straight tube (1); The reducing adapter (6) has a through channel extending from the end of the round head (61) to the end of the flat round head (62), and the through channel communicates with the inner hole of the round tube (5) and the flat straight tube (1). The circular pipe (5) and the reducing adapter (6) can be embedded together with the flat straight pipe (1) in the top slab / wall / bottom slab of the modular building; The circular tube (5) and the reducing adapter (6) are made of metal or plastic.

8. The electrical conduit system for modular buildings according to claim 7, characterized in that: The specifications of the reducing adapter (6) can be selected from the following specifications one to three: Specification 1: The diameter of the inner hole cross section of the circular head (61) is 20mm, the width of the inner hole cross section of the flat round head (62) is 16mm, the length of the inner hole cross section of the flat round head (62) is 24mm, and the wall thickness of the reducing adapter (6) is 2mm. Specification 2: The diameter of the inner hole cross section of the circular head (61) is 25mm, the width of the inner hole cross section of the flat round head (62) is 20mm, the length of the inner hole cross section of the flat round head (62) is 29mm, and the wall thickness of the reducing adapter (6) is 2mm. Specification 3: The diameter of the inner hole of the circular head (61) is 32mm, the width of the inner hole of the flat round head (62) is 20mm, the length of the inner hole of the flat round head (62) is 49mm, and the wall thickness of the reducing adapter (6) is 3mm.

9. The electrical conduit system for modular buildings according to claim 7, characterized in that: It also includes a first electrical box (7), the thickness of which can be selected between 60mm and 100mm, and the interface of the first electrical box (7) is a common circular interface; The first electrical box (7) is connected to the end of the round tube (5) away from the reducer (6) via a metal lock nut or a plastic cup comb; The first electrical box (7), the round pipe (5), the reducing adapter (6), and the flat straight pipe (1) can be jointly embedded in the wall of the modular building, and the thickness direction of the first electrical box (7) is parallel to the thickness direction of the wall.

10. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a straight connector (8), the interfaces on both sides of the straight connector (8) are the same, both are flat and round and the inner hole size is the same as the outer wall size of the flat straight pipe (1), and a limiting section (81) with an inner diameter smaller than the outer wall size of the flat straight pipe (1) is provided between the interfaces on both sides of the straight connector (8). The interfaces on both sides of the straight connector (8) are respectively fitted and fixed to a flat straight tube (1), and the two flat straight tubes (1) respectively abut against the side walls at both ends of the limiting section (81). The straight connector (8) has a through channel between its two ends, and the through channel is connected to the inner hole of the flat straight pipe (1) connected on both sides; The straight connector (8) and the flat straight pipe (1) connected to both sides can be buried together in the wall / base / top of the modular building; The specifications of the straight connector (8) are matched with the specifications of the flat straight pipe (1); The straight connector (8) is made of metal or plastic.

11. The electrical conduit system for modular buildings according to claim 10, characterized in that: It also includes a second electrical box (9) and a first plug-in connector (10); The thickness of the second electrical box (9) can be selected between 60mm and 100mm, and the interface of the second electrical box (9) is a flat oval interface, the size of which is the same as the outer wall size of the flat straight tube (1); The first straight-insertion connector (10) is provided with a first large-diameter section (101) and a first small-diameter section (102). The outer wall size of the first large-diameter section (101) is larger than the size of the interface of the second electrical box (9). The outer wall size of the first small-diameter section (102) is the same as the outer wall size of the flat straight pipe (1). The end of the straight connector (8) away from the flat straight pipe (1) is sleeved and fixed on the first small diameter section (102) of the first straight plug connector (10), and the first small diameter section (102) passes through the interface of the second electrical box (9); The inner wall surface of the interface of the second electrical box (9) abuts against the side wall of the first large diameter section (101) on the first straight plug connector (10), and the outer wall surface of the interface of the second electrical box (9) abuts against the side wall of the straight connector (8). The first straight-insertion connector (10) has a through channel between its two ends, and the through channel is connected to the inner hole of the straight connector (8) connected to its two ends and the interior of the second electrical box (9); The second electrical box (9) and the first plug-in connector (10), together with the straight connector (8) and the flat straight pipe (1), can be embedded in the wall of the modular building, and the thickness direction of the second electrical box (9) is parallel to the thickness direction of the wall. The specifications of the interface of the second electrical box (9) and the specifications of the first straight-plug connector (10) are matched with the specifications of the straight connector (8) and the flat straight pipe (1); The first plug-in connector (10) is made of metal or plastic.

12. The electrical conduit system for modular buildings according to any one of claims 1-3, characterized in that: It also includes a third electrical box (11), a second plug-in connector (12), and a plug-in connector sleeve (13); The thickness of the third electrical box (11) can be selected between 60mm and 100mm, and the interface of the third electrical box (11) is a flat round interface; The second straight-insertion connector (12) is provided with a second large-diameter section (121) and a second small-diameter section (122). The outer wall dimension of the second large-diameter section (121) is larger than the interface dimension of the third electrical box (11). The inner hole dimension of the second small-diameter section (122) is the same as the outer wall dimension of the flat straight pipe (1). The outer wall dimension of the second small-diameter section (122) is the same as the interface dimension of the third electrical box (11). The inner diameter of the straight-insertion connector sleeve (13) is the same as the outer diameter of the second small-diameter section (122) of the second straight-insertion connector (12); The second small diameter section (122) of the second straight-insertion connector (12) passes through the interface of the third electrical box (11) and is sleeved and fixed to a flat straight pipe (1). The sleeve (13) of the straight-insertion connector is sleeved and fixed to the second small diameter section (122) of the second straight-insertion connector (12). The inner wall surface of the interface of the third electrical box (11) abuts against the side wall of the second large diameter section (121) of the second plug-in connector (12), and the outer wall surface of the interface of the third electrical box (11) abuts against the side wall of the plug-in connector sleeve (13). The second straight-insertion connector (12) has a through channel between its two ends, and the through channel is connected to the inner hole of the flat straight pipe (1) connected to its two ends and the interior of the third electrical box (11); The third electrical box (11), the second plug-in connector (12), and the plug-in connector sleeve (13) can be embedded together with the flat straight pipe (1) in the wall of the modular building, and the thickness direction of the third electrical box (11) is parallel to the thickness direction of the wall. The specifications of the second straight-insertion connector (12) and the straight-insertion connector sleeve (13) are matched with the specifications of the flat straight pipe (1) and the interface of the third electrical box (11); The second plug-in connector (12) and the plug-in connector sleeve (13) are made of metal or plastic.

13. The electrical conduit system for modular buildings according to claim 12, characterized in that: The interface size on the third electrical box (11) is a fixed size. The inner hole size of the second small diameter section (122) of the second straight plug connector (12) is adjusted to adapt to the flat straight pipe (1) of different specifications.

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