Combined junction box with fireproof performance
By using a thermally expanded rubber box in the junction box, using its expansion characteristics under high temperature conditions to form a porous carbonized layer, the problem that existing junction boxes cannot prevent flame spread in fire is solved, the fireproof function of the junction box is realized and the addition of the junction box is added. capacity.
Patent Information
- Application Number
- CN202420335842.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-22
AI Technical Summary
The existing junction boxes cannot effectively prevent the spread of flame, smoke and heat when a fire occurs, which poses serious safety hazards.
The thermally expanded rubber box is used as the box body of the junction box, and the thermally expanded rubber box expands rapidly under high temperature conditions, filling the gaps of the through holes, forming a porous carbonization layer, and preventing the spread of flame and heat.
Effectively prevent the spread of flame, smoke and heat, improve fire safety, and increase the capacity of the equipment by increasing the number of boxes, supporting the access of more wires or cables.
Smart Images
Figure CN222508703U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of junction boxes, and in particular to a combined junction box with fireproof performance. Background Art
[0002] The junction box is one of the electrical auxiliary materials, and is generally buried in the wall. To facilitate the arrangement of wires, the wires in the decoration need to pass through the wire tube, and the junction box is used as a transition at the joint of the wires at the end of the wire tube.
[0003] In the prior art, for some thin walls, a through hole needs to be opened on the wall, and then the junction box is installed in the through hole.
[0004] Regarding the above-mentioned related technologies, general junction boxes can usually only protect and connect wires. Once a fire occurs in a house on one side of the wall, flames, smoke and heat can easily spread along the wires and through the through holes to the house on the other side of the wall, causing the fire to spread rapidly, posing a serious safety problem. Utility Model Content
[0005] In order to solve the problem that a single integrally formed junction box cannot connect multiple wires, the present application provides a combined junction box with fire-proof performance.
[0006] The present application provides a combined junction box with fireproof performance, which adopts the following technical solution:
[0007] A combined junction box with fireproof performance comprises a box body, wherein the box body is embedded in a through hole of a wall, and a clamping edge is sleeved at the opening of the box body for clamping at the through hole of the wall. The box body is a heat expansion rubber box.
[0008] By adopting the above technical solution, when a fire occurs in a room on one side of the wall and generates high heat, the volume of the thermal expansion rubber box will expand rapidly, filling the gap between the through hole and forming a porous carbonized layer with excellent thermal insulation performance, effectively preventing flames, smoke and heat from spreading rapidly from the through hole in the wall, so that the junction box has a fireproof function.
[0009] Optionally, two heat expansion rubber boxes are provided, the clamping edges of both boxes are square, and the clamping edges of the two boxes are connected.
[0010] By adopting the above technical solution, the number of box bodies is increased from one to two, the number of wires or cables that can be connected to the junction box is increased, and the capacity of the equipment is increased.
[0011] Optionally, two expansion screw holes are provided at the bottom end of the heat expansion rubber box, the two expansion screw holes are symmetrically arranged, and the expansion screw holes are threadedly connected with fixing bolts, and the fixing bolts are passed between the connecting plate and the heat expansion rubber box.
[0012] By adopting the above technical solution, when the fixing bolt is inserted into the expansion screw hole, the screw rotates, causing the threaded portion of the expansion sleeve in the expansion screw hole to move outward, thereby causing the other side of the expansion sleeve to expand and come into close contact with the hole wall, thereby providing a better fixing effect.
[0013] Optionally, the openings of the heat expansion rubber box are threadedly connected with clamping bolts, the threaded ends of the clamping bolts are threadedly connected with clamping plates, the sides of the heat expansion rubber box are provided with sliding grooves, the clamping plates are slidably connected to the sliding grooves of the heat expansion rubber box, and the clamping bolts are passed between the connecting plate and the heat expansion rubber box.
[0014] By adopting the above technical solution, in actual use, after the staff installs the connecting plate and the heat expansion rubber box, they are placed in the through hole of the wall, the clamping plate is located at the threaded end of the clamping bolt, and then the clamping bolt is tightened. Under the abutment of the side wall of the sliding groove, the clamping bolt is tightened. As the clamping bolt rotates, the clamping plate moves in the sliding groove in a direction close to the clamping bolt, so that the clamping plate abuts against the surface of the wall, and then the heat expansion rubber box is fixed in the through hole of the wall, which simplifies the fixing steps of the heat expansion rubber box and is conducive to improving work efficiency.
[0015] Optionally, a guiding slope is provided on one side of the heat expansion rubber box away from the clamping edge.
[0016] By adopting the above technical solution, the guiding inclined surface arranged on the side of the heat expansion rubber box away from the clamping edge is utilized, so that the installation of the heat expansion rubber box by the staff is facilitated.
[0017] Optionally, the heat expansion rubber box is provided with a connection hole for the cable or wire to pass through.
[0018] By adopting the above technical solution, the connection holes are used to realize the connection between the external wires and the internal wires of the junction box.
[0019] Optionally, a connecting plate is provided on one side of the heat expansion rubber box close to the clamping edge, a plurality of clamping holes are provided on the connecting plate, and both heat expansion rubber boxes are clamped to the connecting plate, and a threading hole is provided on the connecting plate for cables or wires to pass through.
[0020] By adopting the above technical solution, by providing a connecting plate and a snap-in hole, the installation of two thermal expansion rubber boxes is facilitated, making the structure more compact, and the provision of the threading hole facilitates the staff to operate the internal wires.
[0021] Optionally, a driving wheel and two control rods are also provided on the connecting plate, a working groove is opened on the side of the connecting plate away from the junction box, the working groove is opened at the top of the connecting plate, the driving wheel is rotatably connected to the center of the working groove, both ends of the working groove are connected with fixing holes, the two fixing holes are symmetrically arranged about the center of the driving wheel, the bottom ends of the clamping edges of the two heat expansion rubber boxes are fixedly connected with clamping rings, the two clamping rings are respectively located at the two fixing holes of the connecting plate, the two control rods are respectively arranged on both sides of the driving wheel, the two control rods are provided with racks on the side close to the driving wheel, the two racks are meshed with the driving wheel, the two control rods are respectively movably connected with the two clamping rings, and a fixing ring for fixing the control rod is also provided on the connecting plate, and the control rod is slidably connected to the fixing ring.
[0022] By adopting the above technical solution, when installing the heat expansion rubber box through the fixing parts, the staff will respectively install the clamping rings of the two heat expansion rubber boxes into the two fixing holes of the connecting plate, and then rotate the driving wheel, which drives the two control rods to move, so that the control rods slide into the clamping rings, thereby fixing the two heat expansion rubber boxes on the connecting plate, which is convenient for installation and disassembly, and is conducive to improving the work efficiency of the staff.
[0023] In summary, the present application includes at least one of the following beneficial technical effects of a combined junction box with fireproof performance:
[0024] 1. By setting the driving wheel, the control rod and the clamping ring, when the heat expansion rubber box is installed through the fixing parts, the staff will respectively install the clamping rings of the two heat expansion rubber boxes into the two fixing holes of the connecting plate, and then rotate the driving wheel, and the driving wheel drives the two control rods to move, so that the control rods slide into the clamping rings, thereby fixing the two heat expansion rubber boxes on the connecting plate, which is convenient for installation and disassembly, and is conducive to improving the work efficiency of the staff.
[0025] 2. By setting the box body as a heat expansion rubber box, when a fire occurs in the room on one side of the wall and generates high heat, the volume of the heat expansion rubber box will expand rapidly, filling the gap between the through hole and forming a porous carbonized layer with excellent thermal insulation performance, effectively preventing flames, smoke and heat from spreading rapidly from the through hole in the wall, so that the junction box has a fireproof function. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the overall structure of a fire-proof combined junction box in Example 1.
[0027] Figure 2 It is an exploded view highlighting the connection relationship of the junction box in the first embodiment.
[0028] Figure 3 It is an exploded view of a fireproof modular junction box in the second embodiment.
[0029] Figure 4 This is an exploded view of a fire-proof combined junction box in Example 3.
[0030] Explanation of the reference numerals: 100, wall; 110, through hole; 1, junction box body; 11, heat expansion rubber box; 111, expansion screw hole; 112, fixing bolt; 113, clamping bolt; 114, clamping plate; 115, guide slope; 116, connecting hole; 12, snap-fit edge; 2, connecting plate; 3, fixing piece; 31, driving wheel; 32, control lever; 33, snap ring; 34, splicing plate. DETAILED DESCRIPTION
[0031] The present application is further described in detail below in conjunction with all the accompanying drawings.
[0032] The embodiment of the present application discloses a combined junction box with fireproof performance.
[0033] Example 1
[0034] Reference Figure 1 and Figure 2 A combined junction box with fireproof performance includes a junction box body 1 and a connecting plate 2. The number of the junction box bodies 1 is two, the junction box body 1 is located at a through hole 110 of a wall 100, and the connecting plate 2 is located at a side of the junction box body 1 where an opening is provided. The junction box body 1 connects and combs the wires or cables in the wall 100, and the connecting plate 2 connects the two junction box bodies 1.
[0035] In addition, the number of the junction box body 1 can also be set to one, so that it can be used alone without the need for assembly.
[0036] Reference Figure 1 and Figure 2 The junction box body 1 includes a heat expansion rubber box 11 and a clamping edge 12. The heat expansion rubber box 11 is embedded in the through hole 110 of the wall 100. The clamping edge 12 is arranged at the periphery of the heat expansion rubber box 11. The clamping edge 12 is arranged on one side of the heat expansion rubber box 11 where an opening is provided. The clamping edge 12 is square, and the clamping edges 12 of the two heat expansion rubber boxes 11 are connected.
[0037] Reference Figure 1 and Figure 2 When a fire occurs in a room on one side of the wall 100 and generates high heat, the volume of the heat expansion rubber box 11 will expand rapidly, filling the gap between the through hole 110 and forming a porous carbonized layer with excellent thermal insulation performance, effectively preventing flames, smoke and heat from spreading rapidly from the through hole 110 of the wall 100, so that the junction box has a fireproof function.
[0038] Reference Figure 1 and Figure 2 The bottom end of the heat expansion rubber box 11 is provided with two expansion screw holes 111, which are symmetrically arranged. The expansion screw holes 111 are threadedly connected with fixing bolts 112, which are passed through between the connecting plate 2 and the heat expansion rubber box 11. When the fixing bolts 112 are inserted into the expansion screw holes 111, the screws rotate, so that the threaded part of the expansion sleeve in the expansion screw hole 111 moves outward, so that the other side of the expansion sleeve expands and is in close contact with the hole wall, thereby providing a better fixing effect.
[0039] Reference Figure 1 and Figure 2 The openings of the heat expansion rubber box 11 are all threadedly connected with clamping bolts 113, and the threaded ends of the clamping bolts 113 are all threadedly connected with clamping plates 114. The sides of the heat expansion rubber box 11 are provided with sliding grooves, and the clamping plates 114 are slidably connected to the sliding grooves of the heat expansion rubber box 11. The clamping bolts 113 are inserted between the connecting plate 2 and the heat expansion rubber box 11. The side of the heat expansion rubber box 11 away from the clamping edge 12 is provided with a guiding inclined surface 115. The heat expansion rubber box 11 is also provided with a connecting hole 116 for the cable or wire to pass through, and the connecting plate 2 is provided with a threading hole for the cable or wire to pass through.
[0040] Reference Figure 1 and Figure 2 The clamping plate 114 is located at the threaded end of the clamping bolt 113, and then the clamping bolt 113 is tightened. Under the abutment of the side wall of the sliding groove, the clamping plate 114 moves in the sliding groove in the direction close to the clamping bolt 113, so that the clamping plate 114 abuts against the surface of the wall 100, thereby fixing the thermal expansion rubber box 11 in the through hole 110 of the wall 100, simplifying the fixing steps of the thermal expansion rubber box 11, which is conducive to improving work efficiency. When installing the thermal expansion rubber box 11, the staff can hold the guiding inclined surface 115 for installation, thereby facilitating the installation of the thermal expansion rubber box 11, and using the connecting hole 116 and the threading hole to realize the connection between the external wires and the internal wires of the junction box.
[0041] Reference Figure 1 and Figure 2 The connecting plate 2 is arranged on one side of the heat expansion rubber box 11 near the clamping edge 12. A plurality of clamping holes are provided on the connecting plate 2. Both the heat expansion rubber boxes 11 are clamped with the connecting plate 2. The connecting plate 2 is provided with threading holes for cables or wires to pass through. The connecting plate 2 and the clamping holes facilitate the installation of the two heat expansion rubber boxes 11, making the structure more compact. The threading holes are provided to facilitate the operation of the internal wires by the staff.
[0042] Example 2
[0043] Reference Figure 3 , a combined junction box with fireproof performance, further comprising a fixing member 3, the fixing member 3 is respectively connected to the connecting plate 2 and the junction box body 1. The fixing member 3 realizes the disassembly and installation of the junction box body 1 and the connecting plate 2.
[0044] Reference Figure 3 The fixing member 3 includes a driving wheel 31 and two control rods 32. A working groove is provided on the side of the connecting plate 2 away from the junction box. The working groove is provided with the top of the connecting plate 2. The driving wheel 31 is rotatably connected to the center of the working groove. Both ends of the working groove are connected with fixing holes. The two fixing holes are arranged at the diagonals of the working groove. The two fixing holes are symmetrically arranged about the driving wheel 31. The bottom ends of the clamping edges 12 of the two thermal expansion rubber boxes 11 are fixedly connected with snap rings 33. The two snap rings 33 are respectively located at the two fixing holes of the connecting plate 2. The two control rods 32 are respectively arranged on both sides of the driving wheel 31. The two control rods 32 are provided with racks on the side close to the driving wheel 31. The two control rods 32 are meshed with the driving wheel 31, and the two control rods 32 are movably connected with the two snap rings 33 respectively.
[0045] Reference Figure 3 When installing the heat expansion rubber box 11 through the fixing member 3, the staff installs the clamping rings 33 of the two heat expansion rubber boxes 11 into the two fixing holes of the connecting plate 2 respectively, and then rotates the driving wheel 31, and the driving wheel 31 drives the two control rods 32 to move, so that the control rods 32 slide into the clamping rings 33, thereby fixing the two heat expansion rubber boxes 11 on the connecting plate 2, which is convenient for installation and disassembly, and is conducive to improving the work efficiency of the staff.
[0046] Example 3
[0047] Reference Figure 4 One end of the connecting plate 2 is also fixedly connected to a splicing plate 34, on which a movable groove is provided, which is connected to the working groove, and one side of the splicing plate 34 is connected to a junction box body 1, which is clamped with the splicing plate 34. By providing three junction box bodies 1, the wiring capacity of the junction box is further enhanced, and the number of wiring connections is increased.
[0048] The implementation principle of a combined junction box with fireproof performance in an embodiment of the present application is as follows: when a fire occurs in a room on one side of the wall 100 and generates high heat, the volume of the heat expansion rubber box 11 will expand rapidly, filling the gap between the through hole 110 and forming a porous carbonized layer with excellent thermal insulation performance, effectively preventing flames, smoke and heat from spreading rapidly from the through hole 110 of the wall 100, so that the junction box has a fireproof function, and the number of box bodies is changed from one to two or three, which increases the number of wires or cables that can be connected to the junction box and increases the capacity of the equipment.
[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A combined junction box with fireproof performance, comprising a box body, characterized in that: The box body is embedded in the through hole (110) of the wall (100), and a snap-fit edge (12) is sleeved on the opening of the box body for snapping into the through hole (110) of the wall (100), and the box body is a thermal expansion rubber box (11); A connecting plate (2) is provided on one side of the heat expansion rubber box (11) close to the clamping edge (12); The thermal expansion rubber boxes (11) are provided with two, the clamping edges (12) are both square, and the clamping edges (12) of the two boxes are connected; The bottom end of the heat expansion rubber box (11) is provided with two expansion screw holes (111), the two expansion screw holes (111) are symmetrically arranged, and the expansion screw holes (111) are threadedly connected with fixing bolts (112), and the fixing bolts (112) are inserted between the connecting plate (2) and the heat expansion rubber box (11); The opening of the heat expansion rubber box (11) is threadedly connected with a clamping bolt (113), and the threaded end of the clamping bolt (113) is threadedly connected with a clamping plate (114). A sliding groove is opened on the side of the heat expansion rubber box (11), and the clamping plate (114) is slidably connected to the sliding groove of the heat expansion rubber box (11). The clamping bolt (113) is inserted between the connecting plate (2) and the heat expansion rubber box (11).
2. The fireproof modular junction box according to claim 1, characterized in that: A guide slope (115) is provided on one side of the heat expansion rubber box (11) away from the clamping edge (12).
3. The fireproof modular junction box according to claim 1, characterized in that: The heat expansion rubber box (11) is provided with a connection hole (116) for a cable or wire to pass through.
4. The fireproof modular junction box according to claim 2, characterized in that: The connecting plate (2) is provided with a plurality of clamping holes, and the two heat expansion rubber boxes (11) are clamped with the connecting plate (2). The connecting plate (2) is provided with threading holes for cables or wires to pass through.
5. The fireproof modular junction box according to claim 4, characterized in that: The connecting plate (2) is also provided with a driving wheel (31) and two control rods (32). A working groove is provided on a side of the connecting plate (2) away from the junction box. The working groove is provided at the top of the connecting plate (2). The driving wheel (31) is rotatably connected to the center of the working groove. Both ends of the working groove are connected with fixing holes. The two fixing holes are symmetrically arranged about the center of the driving wheel (31). The bottom ends of the clamping edges (12) of the two thermal expansion rubber boxes (11) are fixedly connected with snap rings (33). The two snap rings (33) are respectively located at the two fixing holes of the connecting plate (2). The two control rods (32) are respectively arranged on both sides of the driving wheel (31). The two control rods (32) are provided with racks on the sides close to the driving wheel (31). The two racks are meshed with the driving wheel (31). The two control rods (32) are respectively movably connected to the two snap rings (33). The connecting plate (2) is also provided with a fixing ring for fixing the control rods (32). The control rods (32) are slidably connected to the fixing ring.