Explosion-proof threading box

Abstract

The invention provides an explosion-proof threading box, and belongs to the technical field of electrical engineering. According to the structure, a sealing ring is arranged outside a pipe body in a sleeving mode and is supported on a convex ring, a top cover is in threaded connection with the pipe body and is pressed on the sealing ring, the side portion and the lower portion of a box body are provided with a wire inlet end and a wire outlet end respectively, and the wire inlet end and the wire outlet end are each provided with a threading connector; in the structure of the threading connector, when the bolt piece on the rear side of the bolt is matched with the chuck on the front side of the end in an inserted mode, the front magnet piece and the rear magnet piece are fixed to each other, the protruding end is matched with the second inner notch in an inserted mode, meanwhile, the pin column is matched with the first inner notch in an inserted mode, and the bolt and the end can be rapidly connected. According to the explosion-proof threading box, the wiring structure and the assembling structure of the explosion-proof threading box are properly simplified, but the explosion-proof threading box can be used for isolating a damaged wire from being in contact with sundries in a meter box. According to the invention, dismounting and mounting are convenient, wiring is rapid and efficient, cable connection can be rapidly completed without tools, the threading joint can be modularly replaced, and the power operation and inspection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical engineering, in particular to an explosion-proof wire threading box. Background Art

[0002] Meter boxes can have gaps during use, making outdoor boxes prone to nesting for birds. When cleaning debris from the box, objects like branches, weeds, and wire can pose safety hazards, causing varying degrees of damage to both people and property. This problem can be overcome by installing explosion-proof wire boxes. These boxes isolate damaged wires from debris, reducing and resolving safety risks caused by debris inside the meter box.

[0003] An explosion-proof wire box typically consists of a box body, a lid, and a sealing gasket. The box body houses internal components, while the lid seals the box to prevent external influences. The sealing gasket ensures a tight seal between the box body and lid, preventing foreign matter, moisture, dust, and other objects from entering and affecting the proper functioning of internal components. An explosion-proof wire box is typically hollow, lacking complex structures such as terminal blocks. Its primary function is to connect, bend, and branch distribution lines; no joints are allowed inside the box. Explosion-proof wire boxes are typically Exe increased safety, which employs enhanced safety measures to prevent electrical equipment from generating sparks or dangerous temperatures, potentially causing explosions. While this typical explosion-proof wire box can be used to isolate debris in meter boxes, it is primarily designed to isolate explosive factors. Therefore, its flameproof structure and sealing properties are superior to those used in the aforementioned scenario (i.e., isolating damaged wires from debris within a meter box). In order to meet the explosion-proof effect, this typical explosion-proof wiring box is relatively cumbersome in installation, maintenance, wiring and other aspects. In fact, if the wiring structure and assembly structure can be appropriately simplified, it may still meet the sealing requirements of the above usage scenarios. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to appropriately simplify the wiring structure and assembly structure of the explosion-proof wire-through box while meeting the sealing requirements of the above usage scenarios, so as to improve the operational efficiency of installation, disassembly and wiring.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: A kind of explosion-proof threading box, comprises a box body, a convex ring, a tube body, a sealing ring, a top cover, an inlet terminal, an outlet terminal, a ground terminal and a threading joint, wherein a convex ring is provided on the outer wall of the box body, a tube body with a diameter smaller than that of the convex ring is provided at the upper end of the convex ring, the sealing ring is placed on the outside of the tube body and is supported on the convex ring, the top cover is threadedly connected to the tube body and pressed on the sealing ring, an inlet terminal and an outlet terminal are provided on the side and the bottom of the box body respectively, the inlet terminal and the outlet terminal are provided with the threading joint, a grounding terminal is provided on the box body, and a ground wire is connected to the grounding terminal; the threading joint comprises an end, a rear notch, a first threaded portion, a protruding end, a first inner notch, a rubber lining layer, a front magnet sheet, a chuck, a latch, a second inner notch, a pin, a rear magnet sheet, a front notch, wherein a rear notch is provided at the rear of the end head, a first threaded portion is provided on the periphery of the rear notch, and a threading joint is provided at the front of the end head There is a protruding end, a first inner slot is provided at the front part of the protruding end, a rubber lining layer is provided inside the first inner slot, a front magnet piece is provided on the periphery of the end, a clamp is provided at the front end of the end and the front end of the rear slot, the clamp at the front end of the end is electrically connected with the clamp at the front end of the rear slot, a second inner slot is provided at the rear part of the latch, a pin is provided in the second inner slot, the pin is plugged into the first inner slot, the protruding end is plugged into the second inner slot, a rear magnet piece is provided on the periphery of the latch, the rear magnet piece is fixed to the front magnet piece, a front slot is provided at the front part of the latch, another first threaded portion is provided on the periphery of the front slot, a clamp is provided at the rear end of the front slot and inside the latch, the clamp at the rear end of the front slot is electrically connected with the clamp inside the latch, a latch piece is fixed on the clamp inside the latch, and the latch piece is plugged into the clamp at the front end of the end.

[0006] Preferably, the threading connector also includes a cable, a limiting ring is arranged on the periphery of the cable, and another pin piece is arranged at the front of the cable, the pin piece is plugged into the clamp at the front end of the rear slot, and a lock nut is sleeved on the periphery of the cable, and the lock nut is tightened and fixed to the first threaded portion of the periphery of the rear slot, and the limiting ring is pressed by the rear wall of the lock nut.

[0007] Preferably, the threading connector also includes a cable, a limiting ring is arranged on the periphery of the cable, and another pin piece is arranged at the rear of the cable, the pin piece is plugged into the clamp at the rear end of the front slot, and a lock nut is sleeved on the periphery of the cable. The lock nut is tightened and fixed to the first threaded portion of the periphery of the front slot, and the limiting ring is pressed by the front wall of the lock nut.

[0008] Preferably, a conical surface is provided on the outer edge of the rear end of the pin, and the conical surface is inserted into the first inner notch and contacts the rubber inner lining.

[0009] Preferably, a drag chain is further included, and the drag chain is connected between the top cover and the box body.

[0010] Preferably, screw holes are provided on the top cover and the box body, screws are fastened on the screw holes, and hanging rings are connected to both ends of the drag chain, and the two hanging rings are respectively placed on the periphery of the two screws.

[0011] Preferably, a hexagonal hole is provided at the center of the top surface of the top cover, and concave and convex parts are provided on the periphery of the top cover.

[0012] Preferably, a plane plate is provided on the box body, at least two mounting holes are provided on the plane plate, and threads are provided inside the mounting holes.

[0013] Preferably, a groove is provided on the rear side of the rear magnet sheet, and the front end of the end head is plugged into the groove.

[0014] Preferably, the electrical connection is via a built-in cable connection.

[0015] In the above technical solution, the box body is the main structure of the threading box, its interior is used for threading and serves as the connection node for the cables on both sides. The raised ring serves as the interface between the sealing ring and the top cover. The top cover is threadedly connected to the tube body and pressed onto the sealing ring, thereby closing and sealing the upper end of the box body. When maintenance and cleaning are required, the top cover can be opened to perform the relevant operations. Both the inlet and outlet are equipped with threading connectors, which connect to the cables on both sides, respectively, to realize the threading and connection functions of the cables on both sides. The ground terminal can be used to connect the ground wire.

[0016] In the threading connector structure, the rear cable uses the latch piece at its end to mate with the clamp at the rear of the terminal, and the front of the rear cable enters the rear notch. The lock nut is then tightened with the first threaded portion outside the rear notch, so that the retaining ring around the rear cable is compressed and fixed, thereby achieving the connection and fixation function between the rear cable and the terminal. Similarly, the front cable uses the latch piece at its end to mate with the clamp at the front of the plug, and the rear of the front cable enters the front notch. The lock nut is then tightened with the first threaded portion outside the front notch, so that the retaining ring around the front cable is compressed and fixed, thereby achieving the connection and fixation function between the front cable and the plug. Between the pin and the end, when the pin piece on the rear side of the pin is plugged into the clamp on the front side of the end, not only the front magnet piece and the rear magnet piece are fixed to each other, but the protruding end is plugged into the second inner groove, and at the same time the pin is plugged into the first inner groove, and the rubber lining can increase the friction; based on the above plug-in structure, the connection and fixing functions of the pin and the end can be realized.

[0017] In the preferred technical solution, the drag chain is connected between the top cover and the box body, so the top cover is not easily lost during inspection and maintenance; the screw holes and screws can be used to fix the ends of the drag chain; the hexagonal hole can be used to loosen the top cover, and the concave and convex parts facilitate manual loosening of the top cover; the flat plate and the mounting holes can be used to install a nameplate.

[0018] The present invention provides an explosion-proof wire-through box. Compared to conventional explosion-proof wire-through boxes, this one simplifies the wiring and assembly structures, yet is sufficient for isolating damaged wires from contact with debris in meter boxes. The box is easy to assemble and disassemble, allowing for quick and efficient wiring, requiring no tools. Furthermore, the wire-through connectors are modularly replaceable, improving efficiency in power operation and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the first stereogram of the present invention as a whole; Figure 2 is a second perspective view of the present invention as a whole; Figure 3 It is a three-dimensional diagram of the box body in the present invention; Figure 4 is a three-dimensional diagram of the top cover of the present invention; Figure 5 This is a front view of the threading connector in the present invention; Figure 6 This is an internal diagram of the threading connector in the present invention; Figure 7 This is a front view of the threading connector in the present invention when it is not yet connected; Figure 8 This is an internal diagram of the threading connector in the present invention when it is not yet connected; In the picture: , DETAILED DESCRIPTION

[0020] The following is a detailed description of specific embodiments of the present invention. To avoid excessive unnecessary detail, well-known structures or functions will not be described in detail in the following examples. Approximate language used in the following examples can be used for quantitative expression to indicate that a certain amount of variation is allowed without changing the basic function. Unless otherwise defined, technical and scientific terms used in the following examples have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs. Example

[0021] An explosion-proof wire box, such as Figures 1 to 8As shown, it includes a box body 1, a convex ring 2, a tube body 3, a sealing ring 4, a top cover 5, an inlet terminal 6, an outlet terminal 7, a grounding terminal 8 and a threading connector, wherein a convex ring 2 is provided on the outer wall of the box body 1, and a tube body 3 with a diameter smaller than that of the convex ring 2 is provided at the upper end of the convex ring 2. The sealing ring 4 is sleeved on the outside of the tube body 3 and is supported on the convex ring 2. The top cover 5 is threadedly connected to the tube body 3 and pressed on the sealing ring 4. The inlet terminal 6 and the outlet terminal 7 are respectively provided on the side and the lower part of the box body 1, and the inlet terminal 6 and the outlet terminal 7 are both provided with the threading connector. A grounding terminal 8 is provided on the box body 1, and a ground wire is connected to the grounding terminal 8; the threading connector includes an end 9, a rear notch 10, a first threaded portion 11, a protruding end 12, a first inner notch 13, a rubber lining 14, a front magnet sheet 15, a clamp 16, a latch 17, a second inner notch 18, a pin 19, a rear magnet sheet 20, and a front notch 21, wherein a rear notch 10 is provided at the rear of the end 9, a first threaded portion 11 is provided on the periphery of the rear notch 10, a protruding end 12 is provided at the front of the end 9, and a protruding end 15 is provided at the protruding end 15. A first inner notch 13 is provided at the front of the end 12, a rubber lining 14 is provided inside the first inner notch 13, a front magnet sheet 15 is provided on the periphery of the end 9, a clamp 16 is provided at the front end of the end 9 and the front end of the rear notch 10, the clamp 16 at the front end of the end 9 is electrically connected to the clamp 16 at the front end of the rear notch 10, a second inner notch 18 is provided at the rear of the latch 17, a pin 19 is provided in the second inner notch 18, the pin 19 is plugged into the first inner notch 13, and the protruding end 12 is plugged into the second inner notch 18 is plugged in, a rear magnet piece 20 is provided on the periphery of the pin 17, the rear magnet piece 20 is fixed with the front magnet piece 15, a front slot 21 is provided at the front part of the pin 17, another first threaded portion 11 is provided on the periphery of the front slot 21, a clamp 16 is provided at the rear end of the front slot 21 and inside the pin 17, the clamp 16 at the rear end of the front slot 21 is electrically connected with the clamp 16 inside the pin 17, a pin piece is fixed on the clamp 16 inside the pin 17, and the pin piece is plugged in with the clamp 16 at the front end of the end head 9.

[0022] The box body 1 is the main structure of the wire threading box. Its interior is used for threading wires and serves as a connection point for the cables on both sides. The raised ring 2 serves as the interface between the sealing ring 4 and the top cover 5. The top cover 5 is threadedly connected to the tube body 3 and pressed onto the sealing ring 4, thereby closing and sealing the upper end of the box body 1. When maintenance and cleaning are required, the top cover 5 can be opened to perform the relevant operations. The inlet terminal 6 and the outlet terminal 7 are each equipped with a threading connector, which connects to the cables on both sides, thereby realizing the threading and connection functions of the cables on both sides. The ground terminal 8 can be used to connect a ground wire.

[0023] In the structure of the threading connector, the rear cable 22 is mated with the clamp 16 at the rear of the terminal 9 by using the latch piece at its end, and the front part of the rear cable 22 enters the rear notch 10. The lock nut 24 is then tightened with the first threaded portion 11 outside the rear notch 10, so that the limiting ring 23 around the rear cable 22 is compressed and fixed, thereby achieving the connection and fixation function between the rear cable 22 and the terminal 9. Similarly, the front cable 22 is mated with the clamp 17 at the front end of the plug 17 by using the latch piece at its end, and the rear part of the front cable 22 enters the front notch 21. The lock nut 24 is then tightened with the first threaded portion 11 outside the front notch 21, so that the limiting ring 23 around the front cable 22 is compressed and fixed, thereby achieving the connection and fixation function between the front cable 22 and the plug 17. Between the latch 17 and the end 9, when the latch piece on the rear side of the latch 17 is plugged into the clamp 16 on the front side of the end 9, not only the front magnet piece 15 and the rear magnet piece 20 are fixed to each other, but also the protruding end 12 is plugged into the second inner groove 18, and at the same time the pin 19 is plugged into the first inner groove 13, and the rubber lining 14 can increase the friction; based on the above plug-in structure, the connection and fixing functions of the latch 17 and the end 9 can be realized. Example

[0024] An explosion-proof wire box, such as Figures 1 to 8As shown, it includes a box body 1, a convex ring 2, a tube body 3, a sealing ring 4, a top cover 5, an inlet terminal 6, an outlet terminal 7, a grounding terminal 8 and a threading connector, wherein a convex ring 2 is provided on the outer wall of the box body 1, and a tube body 3 with a diameter smaller than that of the convex ring 2 is provided at the upper end of the convex ring 2. The sealing ring 4 is sleeved on the outside of the tube body 3 and is supported on the convex ring 2. The top cover 5 is threadedly connected to the tube body 3 and pressed on the sealing ring 4. The inlet terminal 6 and the outlet terminal 7 are respectively provided on the side and the lower part of the box body 1, and the inlet terminal 6 and the outlet terminal 7 are both provided with the threading connector. A grounding terminal 8 is provided on the box body 1, and a ground wire is connected to the grounding terminal 8; the threading connector includes an end 9, a rear notch 10, a first threaded portion 11, a protruding end 12, a first inner notch 13, a rubber lining 14, a front magnet sheet 15, a clamp 16, a latch 17, a second inner notch 18, a pin 19, a rear magnet sheet 20, and a front notch 21, wherein a rear notch 10 is provided at the rear of the end 9, a first threaded portion 11 is provided on the periphery of the rear notch 10, a protruding end 12 is provided at the front of the end 9, and a protruding end 15 is provided at the protruding end 15. A first inner notch 13 is provided at the front of the end 12, a rubber lining 14 is provided inside the first inner notch 13, a front magnet sheet 15 is provided on the periphery of the end 9, a clamp 16 is provided at the front end of the end 9 and the front end of the rear notch 10, the clamp 16 at the front end of the end 9 is electrically connected to the clamp 16 at the front end of the rear notch 10, a second inner notch 18 is provided at the rear of the latch 17, a pin 19 is provided in the second inner notch 18, the pin 19 is plugged into the first inner notch 13, and the protruding end 12 is plugged into the second inner notch 18 is plugged in, a rear magnet piece 20 is provided on the periphery of the pin 17, the rear magnet piece 20 is fixed with the front magnet piece 15, a front slot 21 is provided at the front part of the pin 17, another first threaded portion 11 is provided on the periphery of the front slot 21, a clamp 16 is provided at the rear end of the front slot 21 and inside the pin 17, the clamp 16 at the rear end of the front slot 21 is electrically connected with the clamp 16 inside the pin 17, a pin piece is fixed on the clamp 16 inside the pin 17, and the pin piece is plugged in with the clamp 16 at the front end of the end head 9. The threading connector further comprises a cable 22, with a stop ring 23 disposed around the periphery of the cable 22. A further latch plate is disposed at the front of the cable 22, which engages with the chuck 16 at the front end of the rear notch 10. A lock nut 24 is sleeved around the periphery of the cable 22, which is screwed and secured to the first threaded portion 11 at the periphery of the rear notch 10. The stop ring 23 is compressed by the rear wall of the lock nut 24. The threading connector further comprises a cable 22, with a stop ring 23 disposed around the periphery of the cable 22. A further latch plate is disposed at the rear end of the cable 22, which engages with the chuck 16 at the rear end of the front notch 21. A lock nut 24 is sleeved around the periphery of the cable 22, which is screwed and secured to the first threaded portion 11 at the periphery of the front notch 21. The stop ring 23 is compressed by the front wall of the lock nut 24. A tapered surface is disposed on the outer edge of the rear end of the pin 19, which is inserted into the first inner notch 13 and contacts the rubber lining 14.It also includes a drag chain 25, which is connected between the top cover 5 and the box body 1. Screw holes 26 are provided on the top cover 5 and the box body 1, and screws 27 are fastened on the screw holes 26. Hanging rings are connected to both ends of the drag chain 25, and the two hanging rings are respectively placed on the outside of the two screws 27. An inner hexagonal hole 28 is provided at the center position of the top surface of the top cover 5, and a concave and convex part 29 is provided on the periphery of the top cover 5. A flat plate 30 is provided on the box body 1, and at least two mounting holes 31 are provided on the flat plate 30, and the inside of the mounting hole 31 has a thread. A groove is provided on the rear side of the rear magnet sheet 20, and the front end of the terminal 9 is plugged into the groove. The electrical connection is through a built-in cable connection. In the above technical solution, the drag chain 25 is connected between the top cover 5 and the box body 1, so that the top cover 5 is not easily lost during inspection and maintenance; the screw hole 26 and the screw 27 are used to fix the end of the drag chain 25; the inner hexagonal hole 28 can be used to loosen the top cover 5, and the concave and convex part 29 facilitates manual loosening of the top cover 5; the flat plate 30 and the mounting hole 31 can be used to install a nameplate.

[0025] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An explosion-proof wire box, characterized in that The invention comprises a box body (1), a convex ring (2), a tube body (3), a sealing ring (4), a top cover (5), an inlet terminal (6), an outlet terminal (7), a ground terminal (8) and a threading connector, wherein a convex ring (2) is provided on the outer wall of the box body (1), a tube body (3) having a diameter smaller than that of the convex ring (2) is provided at the upper end of the convex ring (2), the sealing ring (4) is sleeved on the outside of the tube body (3) and is supported on the convex ring (2), the top cover (5) is threadedly connected to the tube body (3) and is pressed on the sealing ring (4), the side and lower parts of the box body (1) are respectively provided with an inlet terminal (6) and an outlet terminal (7), and the threading connector is provided at both the inlet terminal (6) and the outlet terminal (7). A head is provided on the box body (1), and a grounding terminal (8) is connected to the grounding terminal (8); the threading connector includes a terminal (9), a rear notch (10), a first threaded portion (11), a protruding terminal (12), a first inner notch (13), a rubber lining (14), a front magnet sheet (15), a clamp (16), a latch (17), a second inner notch (18), a pin (19), a rear magnet sheet (20), and a front notch (21), wherein the rear notch (10) is provided at the rear of the terminal (9), the first threaded portion (11) is provided on the periphery of the rear notch (10), and the protruding terminal (12) is provided at the front of the terminal (9). A first inner notch (13) is provided at the front of the protruding end (12), a rubber inner lining (14) is provided inside the first inner notch (13), a front magnet sheet (15) is provided on the periphery of the end (9), a clamp (16) is provided at the front end of the end (9) and the front end of the rear notch (10), the clamp (16) at the front end of the end (9) is electrically connected to the clamp (16) at the front end of the rear notch (10), a second inner notch (18) is provided at the rear of the latch (17), a pin (19) is provided in the second inner notch (18), the pin (19) is plugged into the first inner notch (13), and the protruding end (12) is plugged into the second inner notch (13). The slot (18) is plugged in, a rear magnet sheet (20) is provided on the periphery of the latch (17), the rear magnet sheet (20) is fixed with the front magnet sheet (15), a front slot (21) is provided on the front of the latch (17), another first threaded portion (11) is provided on the periphery of the front slot (21), a chuck (16) is provided at the rear end of the front slot (21) and inside the latch (17), the chuck (16) at the rear end of the front slot (21) is electrically connected to the chuck (16) inside the latch (17), a latch sheet is fixed on the chuck (16) inside the latch (17), and the latch sheet is plugged in with the chuck (16) at the front end of the end head (9).

2. The explosion-proof wire-threading box according to claim 1, characterized in that: The threading connector also includes a cable (22), a limiting ring (23) is arranged on the periphery of the cable (22), and another latch piece is arranged at the front of the cable (22), the latch piece is plugged with the clamp (16) at the front end of the rear notch (10), and a lock nut (24) is sleeved on the periphery of the cable (22), the lock nut (24) is tightened and fixed with the first threaded portion (11) on the periphery of the rear notch (10), and the limiting ring (23) is pressed by the rear wall of the lock nut (24).

3. The explosion-proof wire-threading box according to claim 1, characterized in that: The threading connector also includes a cable (22), a limiting ring (23) is provided on the periphery of the cable (22), and another latch piece is provided at the rear of the cable (22), the latch piece is plugged into the clamp (16) at the rear end of the front notch (21), and a lock nut (24) is sleeved on the periphery of the cable (22), the lock nut (24) is tightened and fixed with the first threaded portion (11) on the periphery of the front notch (21), and the limiting ring (23) is pressed by the front wall of the lock nut (24).

4. The explosion-proof wire threading box according to claim 1, characterized in that: A conical surface is provided on the outer edge of the rear end of the pin (19), and the conical surface is inserted into the first inner notch (13) and contacts the rubber inner lining (14).

5. The explosion-proof wire-threading box according to claim 1, characterized in that: It also includes a drag chain (25), which is connected between the top cover (5) and the box body (1).

6. The explosion-proof wire-threading box according to claim 5, characterized in that: Screw holes (26) are provided on the top cover (5) and the box body (1), and screws (27) are fastened on the screw holes (26). Hanging rings are connected to both ends of the drag chain (25), and the two hanging rings are respectively placed on the periphery of the two screws (27).

7. The explosion-proof wire-threading box according to claim 1, characterized in that: An inner hexagonal hole (28) is provided at the center position of the top surface of the top cover (5), and a concave-convex portion (29) is provided on the periphery of the top cover (5).

8. The explosion-proof wire-threading box according to claim 1, characterized in that: A plane plate (30) is provided on the box body (1), at least two mounting holes (31) are provided on the plane plate (30), and threads are provided inside the mounting holes (31).

9. The explosion-proof wire threading box according to claim 1, characterized in that: A groove is provided on the rear side of the rear magnet sheet (20), and the front end of the end head (9) is plugged into the groove.

10. The explosion-proof wire-threading box according to claim 1, characterized in that: The electrical connection is via a built-in cable connection.

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