Junction box for power distribution

Abstract

The utility model discloses a junction box for power distribution, belongs to the technical field of power distribution equipment, and mainly solves the problems that although a junction box in the prior art is easy to realize, holes of the junction box are different in size and have no sealing performance, gaps remain in the holes when a cable passes through the junction box, water vapor easily enters the junction box along with the cable, the moisture-proof effect is poor, the junction box is difficult to resist water, and the junction box is inconvenient to use. An outer box body is arranged, an inner box body is arranged in the outer box body, a wire holder is arranged on the inner bottom wall of the inner box body, a plurality of binding posts are arranged at the top of the wire holder at equal intervals, binding terminals are fixedly installed at the top ends of the binding posts, and a box cover is fixedly installed at the top of the inner box body. A plurality of half-edge fixing sleeves are embedded in the surfaces, close to each other, of the inner box body and the box cover at equal intervals, sealing grooves are formed in the half-edge fixing sleeves, rubber rings are clamped in the sealing grooves, the surfaces of cables are sleeved with the rubber rings, and a fixing cover plate is fixedly installed at the top of the outer box body through a plurality of connecting bolts; a water guide groove is formed in the top of the fixed cover plate.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment, and more specifically, to a junction box for power distribution. Background Art

[0002] The junction box is one of the indispensable devices for the installation of power distribution equipment in the electrical field. It is used for the connection of two cables or one cable with multiple cables. The junction box is used as a transition. The cable is connected to the junction box to shunt and protect the line.

[0003] However, there are various types of junction boxes in the prior art. For example, utility model patent CN207559485U relates to a junction box for power distribution. The utility model sets a blocking portion, which presses the wiring box cover to prevent it from tilting or deforming, thereby improving the aesthetics and safety. The utility model has a simple structure and is easy to implement, and will not affect the function of the original structure.

[0004] Although the structure of the junction box is easy to implement, the holes of the junction box are of different sizes and have no sealing function. When the cables are threaded, gaps still remain in the holes, which can easily cause water vapor to enter the junction box along with the cables through the gaps, resulting in poor moisture-proof effect. At the same time, the waterproof performance of the junction box is not ideal. In order to avoid this phenomenon, it is very necessary to design a junction box for power distribution. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to achieve the above object, the utility model provides a junction box for power distribution, which is achieved by the following specific technical means:

[0007] A junction box for power distribution comprises an outer box body, an inner box body is arranged inside the outer box body, a junction seat is arranged on the inner bottom wall of the inner box body, a plurality of junction posts are arranged equidistantly on the top of the junction seat, junction terminals are fixedly installed on the top of the junction posts, a box cover is fixedly installed on the top of the inner box body, a plurality of half-side fixing sleeves are embedded and arranged equidistantly on the surfaces of the inner box body and the box cover close to each other, sealing grooves are arranged inside the half-side fixing sleeves, rubber rings are clamped inside the sealing grooves, and the rubber rings are sleeved on the surface of the cable, a fixed cover plate is fixedly installed on the top of the outer box body by a plurality of connecting bolts, a water guide groove is arranged on the top of the fixed cover plate, a vent is arranged on the front of the inner box body, and a waterproof breathable membrane is fixedly connected inside the vent.

[0008] Preferably, sockets are provided on both side surfaces of the inner box body, card slots are provided on the surfaces of the two sockets away from each other, slots are provided on the tops of the sockets, fixed supports are provided on both side surfaces of the box cover, and plug blocks are fixedly connected to the bottoms of the fixed supports, which can be embedded in the corresponding slots of the sockets.

[0009] Preferably, a slide groove is provided inside the insert block, a movable block is slidably connected inside the slide groove, a compression spring is fixedly connected inside the slide groove, and one end of the compression spring is fixedly connected to one end of the movable block.

[0010] Preferably, the outer box body and the inner box body are combined to provide waterproof and moisture-proof protection for the connection points of the circuits and the electronic components. The multiple half-side fixing sleeves are divided into two groups. The two groups of half-side fixing sleeves clamp the rubber rings in the sealing grooves. The waterproof and breathable membrane is used to block the water vapor inhaled at the vents and allow wind to pass through them.

[0011] Preferably, a plurality of wiring tubes are equidistantly embedded on the front and back of the outer box body, and the plurality of wiring holes are divided into two groups, one group of wiring holes is used for passing cables in, and the other group of wiring holes is used for passing cables out.

[0012] Preferably, the movable card block is wedge-shaped, and the fixed support is pressed against the socket to make the movable card block snap into the interior of the card slot.

[0013] Preferably, the front and back sides of the outer box body are fixedly connected with mounting plates, and the tops of the mounting plates are provided with a plurality of mounting holes.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0015] When assembling the junction box for waterproofing, insert the cable into the wire inlet of the outer box body, set the rubber ring on the surface of the cable, make the rubber ring snap into the sealing groove of a set of half-side fixing sleeves, and then complete the wiring of the cable, and then fix the box cover on the inner box body, so that the rubber ring is snapped into the other set of half-side fixing sleeves. The rubber ring fits tightly with the sealing groove, and the gap is sealed to prevent water vapor from entering the junction box through the gap along with the cable. Finally, the fixed cover is fixedly installed on the outer box body. When the junction box is installed outdoors, when rain falls on the junction box, the water is quickly drained out by using the water guide groove to avoid water accumulation, so as to waterproof the junction box, and the water vapor inhaled at the vent is blocked by the waterproof breathable membrane to allow wind to pass through it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly of the inner box body and the box cover;

[0019] Figure 3 It is a side cross-sectional schematic diagram of the utility model;

[0020] Figure 4 It is a front cross-sectional schematic diagram of the utility model;

[0021] Figure 5 It is an enlarged schematic diagram of the structure at A;

[0022] Figure 6 It is a structural schematic diagram of a fixed cover plate;

[0023] Figure 7 It is a closed schematic diagram of the inner box body and the box cover.

[0024] In the figure: 1. Outer box body; 2. Inner box body; 3. Box cover; 4. Half-side fixing sleeve; 5. Sealing groove; 6. Rubber ring; 7. Cable; 8. Fixed cover plate; 9. Water guide groove; 10. Connecting bolt; 11. Ventilation hole; 12. Waterproof breathable membrane; 13. Socket; 14. Card slot; 15. Fixed support; 16. Insert block; 17. Slide slot; 18. Movable card block; 19. Compression spring; 20. Wire routing tube; 21. Terminal block; 22. Terminal post; 23. Terminal block; 24. Mounting plate; 25. Mounting hole. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0028] like Figure 2 , Figure 3 as well as Figure 6 As shown, it is a structural schematic diagram of the power distribution junction box in this embodiment. In this embodiment, the power distribution junction box plays a transitional role. The cable is connected to the junction box to shunt and protect the circuit and internal electronic components. The power distribution junction box includes an outer box body 1 and an inner box body 2. The outer box body 1 and the inner box body 2 are combined to provide waterproof and moisture-proof protection for the connection points and components of the circuit to prevent water vapor from entering the junction box and affecting the normal operation of the junction box. The inner box body 2 is provided inside the outer box body 1, and a box cover 3 is fixedly installed on the top of the inner box body 2. A plurality of half-side fixing sleeves 4 are equidistantly embedded on the surfaces of the inner box body 2 and the box cover 3 close to each other. The plurality of half-side fixing sleeves 4 are divided into two groups. The interiors of the half-side fixing sleeves 4 are each provided with sealing grooves 5. The interiors of the sealing grooves 5 are each clamped with rubber rings 6. The rubber rings 6 are sleeved on the surface of the cable 7. The top of the outer box body 1 is provided with a plurality of A fixing cover plate 8 is fixedly installed with a connecting bolt 10, and a water guide groove 9 is opened on the top of the fixing cover plate 8. When assembling the junction box for waterproofing, first insert the cable 7 into the wire inlet of the outer box body 1, and set the rubber ring 6 on the surface of the cable 7, and then make the rubber ring 6 with the cable 7 clamped in the sealing groove 5 of the half-fixed sleeve 4, and then complete the wiring operation of the cable 7, and then fix the box cover 3 on the top of the inner box body 2, so that the rubber ring 6 is clamped into the other set of half-fixed sleeves 4, and the rubber ring 6 fits tightly with the sealing groove 5, and the gap is sealed to prevent water vapor from entering the junction box through the gap along with the cable 7. Finally, use multiple connecting bolts 10 to fix the fixing cover plate 8 on the top of the outer box body 1. When the junction box is installed outdoors, when rain falls on the junction box, the water is quickly discharged by using the set water guide groove 9 to prevent water flow from gathering, thereby waterproofing the junction box.

[0029] In addition, if Figure 3 As shown, in this embodiment, a vent 11 is provided on the front of the inner box body 2, and a waterproof breathable membrane 12 is fixedly connected to the inside of the vent 11. The junction box contains a large number of circuits and electronic components, which will generate heat during operation. The vent 11 is required to ventilate and dissipate heat in the junction box. During the ventilation process, water vapor will enter the junction box. The waterproof breathable membrane 12 is used to intercept and block the water vapor, thereby further achieving moisture-proofing.

[0030] It is worth noting that Figure 3 As shown, in this embodiment, a plurality of wiring tubes 20 are equidistantly embedded in the front and back of the outer box body 1. The plurality of wiring tubes 20 are divided into two groups, one group of wiring tubes 20 is used for passing the cables 7 in, and the other group of wiring tubes 20 is used for passing the cables 7 out.

[0031] like Figure 5 and Figure 7As shown, in this embodiment, in order to better fix and install the inner box body 2 and the box cover 3, sockets 13 are provided on both side surfaces of the inner box body 2, card slots 14 are provided on the surfaces of the two sockets 13 away from each other, slots are provided on the tops of the sockets 13, and fixed supports 15 are provided on both side surfaces of the box cover 3, and plug blocks 16 are fixedly connected to the bottoms of the fixed supports 15.

[0032] It is worth noting that in this embodiment, a slide groove 17 is provided inside the plug block 16, and an active block 18 is slidably connected inside the slide groove 17, and the active block 18 is wedge-shaped. A compression spring 19 is fixedly connected inside the slide groove 17, and one end of the compression spring 19 is fixedly connected to one end of the active block 18. The fixed support 15 is pressed against the socket 13 to make the active block 18 snap into the slot 14. When the inner box body 2 and the box cover 3 are installed, the box cover 3 is closed on the top of the inner box body 2, so that the plug block 16 is inserted into the slot of the socket 13, so that the wedge-shaped active block 18 enters the slot, and then the resilience of the compression spring 19 is used to reset the active block 18 and snap it into the slot 14, tightly fixed, and the installation of the inner box body 2 is completed.

[0033] like Figure 4 As shown, in this embodiment, the inner bottom wall of the inner box body 2 is provided with a terminal block 21, and a plurality of terminal posts 22 are equidistantly provided on the top of the terminal block 21. The tops of the terminal posts 22 are fixedly mounted with terminal blocks 23. The power line is transitionally connected through the provided terminal block 21, terminal posts 22 and terminal blocks 23.

[0034] like Figure 1 As shown, in this embodiment, the front and back sides of the outer box body 1 are fixedly connected with mounting plates 24, and the top of the mounting plates 24 is provided with a plurality of mounting holes 25. The mounting plates 24 and the mounting holes 25 can be used to fix the junction box.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A junction box for power distribution, comprising an outer box body (1), an inner box body (2) being arranged inside the outer box body (1), a wiring seat (21) being arranged on the inner bottom wall of the inner box body (2), a plurality of wiring posts (22) being arranged at equal intervals on the top of the wiring seat (21), and a wiring terminal (23) being fixedly mounted on the top of each of the wiring posts (22), characterized in that: A box cover (3) is fixedly mounted on the top of the inner box body (2); a plurality of half-side fixing sleeves (4) are equidistantly embedded in mutually adjacent surfaces of the inner box body (2) and the box cover (3); a sealing groove (5) is provided inside each half-side fixing sleeve (4); a rubber ring (6) is clamped inside each sealing groove (5); the rubber ring (6) is sleeved on the surface of the cable (7); a fixed cover plate (8) is fixedly mounted on the top of the outer box body (1) via a plurality of connecting bolts (10); a water guide groove (9) is provided on the top of the fixed cover plate (8); a vent (11) is provided on the front of the inner box body (2); a waterproof breathable membrane (12) is fixedly connected inside the vent (11).

2. A junction box for power distribution according to claim 1, characterized in that: Sockets (13) are arranged on both side surfaces of the inner box body (2), and slots (14) are arranged on the surfaces of the two sockets (13) that are away from each other. Slots are arranged on the tops of the sockets (13), and fixed supports (15) are arranged on both side surfaces of the box cover (3). Insert blocks (16) are fixedly connected to the bottoms of the fixed supports (15), and the insert blocks (16) can be inserted into the slots corresponding to the sockets (13).

3. A junction box for power distribution according to claim 2, characterized in that: A slide groove (17) is provided inside the insert block (16), a movable clamping block (18) is slidably connected inside the slide groove (17), a compression spring (19) is fixedly connected inside the slide groove (17), and one end of the compression spring (19) is fixedly connected to one end of the movable clamping block (18).

4. A junction box for power distribution according to claim 1, characterized in that: The outer box body (1) and the inner box body (2) are combined to provide waterproof and moisture-proof protection for the connection points of the circuits and the electronic components. The plurality of half-side fixing sleeves (4) are divided into two groups. The two groups of half-side fixing sleeves (4) clamp the rubber ring (6) into the sealing groove (5). The waterproof breathable membrane (12) is used to block the water vapor sucked in at the ventilation opening (11) and allow the wind to pass through.

5. A junction box for power distribution according to claim 1, characterized in that: A plurality of wiring tubes (20) are embedded and arranged at equal intervals on the front and back of the outer box body (1); the plurality of wiring tubes (20) are divided into two groups, one group of wiring tubes (20) is used for passing cables (7) in, and the other group of wiring tubes (20) is used for passing cables (7) out.

6. A junction box for power distribution according to claim 3, characterized in that: The movable card block (18) is wedge-shaped, and the fixed support (15) is pressed tightly against the socket (13) so that the movable card block (18) is inserted into the interior of the card slot (14).

7. A junction box for power distribution according to claim 1, characterized in that: The front and back sides of the outer box body (1) are fixedly connected with mounting plates (24), and the tops of the mounting plates (24) are provided with a plurality of mounting holes (25).

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