A patch panel
By designing wire tracks, insulated screws, and phase sequence markings in the junction box, safety hazards during the replacement of the meter junction box were resolved, ensuring the wires were fixed and correctly connected, thus improving the safety and convenience of the replacement process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YUNNAN POWER GRID CO LTD NUJIANG POWER SUPPLY BUREAU
- Filing Date
- 2022-10-25
- Publication Date
- 2026-05-12
AI Technical Summary
During the replacement of the meter junction box, the wires are prone to short circuits and fires, and the phase sequence is difficult to identify correctly, posing a safety hazard.
A junction box was designed, comprising wire rails, insulated screws, connection slots, and phase sequence markings, to secure and differentiate wires, prevent short circuits, and ensure correct connections.
It improves the safety and convenience of the meter junction box replacement process, prevents short circuits, and simplifies the identification of correct connections.
Smart Images

Figure CN115632307B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of communications, and more particularly to a junction box. Background Technology
[0002] The electricity meter junction box is a specialized junction box in the standard wiring of electricity metering devices, serving both wiring and safety protection purposes. During the replacement of the electricity meter junction box, workers need to insulate and wrap the removed wires.
[0003] The common practice is to wrap the wires with insulating tape. However, improper wrapping can easily cause short circuits and fires, posing a safety hazard. Moreover, after removing the junction box, there are many wires, and it is difficult to identify the phase sequence and socket of each wire. Each wire needs to be tested one by one before it can be accurately wired in the new junction box. During this process, wires may be connected to the wrong sockets multiple times, which also poses a safety hazard.
[0004] We need an auxiliary device to improve the safety of the electricity meter junction box replacement process. Summary of the Invention
[0005] To improve safety during the replacement of electricity meter junction boxes, this application provides a junction box with a cuboid structure. A wire track is provided on the first surface of the junction box, and the wire track is a deep hole perpendicular to the first surface. An insulated screw is provided on the second surface perpendicular to the first surface, with one threaded end of the insulated screw extending into the wire track. A first connecting slot and a second connecting slot are respectively provided on the third and fourth surfaces perpendicular to the first surface. The third and fourth surfaces are parallel to each other, and multiple junction boxes are movably connected to each other through the first connecting slot and the second connecting slot.
[0006] After replacing the wire, temporarily insert the wire into the wire track on the surface, and then rotate the insulated claw screw. As the insulated claw screw is rotated downwards, the threaded end of the insulated claw screw extends longer into the wire track until the threaded end of the insulated claw screw contacts the wire inserted into the wire track. At this point, the wire is pressed tightly against the side wall of the wire track by the pressure of the insulated claw screw and is fixed in place.
[0007] The third and fourth surfaces are respectively provided with a first connecting slot and a second connecting slot, and multiple junction boxes are movably connected to each other through the first connecting slot and the second connecting slot. Because when replacing a meter junction box, more than one number of wires are usually removed, and junction boxes with the same number of wires are connected, the wires are inserted sequentially into a row of movably connected junction boxes, making it less likely to get confused, easier to fix, and improving convenience.
[0008] Optionally, the sidewall of the conductor track is provided with a threaded hole, and an electric wire is provided in the threaded hole. The electric wire includes a conductor and an insulating layer covering the conductor.
[0009] The side wall of the conductor track is provided with threaded holes. When the threaded end of the insulated screw contacts the wire inserted into the conductor track, the wire is pressed tightly against the side wall of the conductor track by the pressure of the insulated screw and is fixed. At the same time, because the side wall in contact with the wire is provided with threaded holes, the friction between the wire and the side wall is increased. Under the combined action of the insulated screw and the threaded holes, the wire is fixed more firmly.
[0010] The section of the wire inside the wire track has had its insulation stripped off and is now a bare wire. Therefore, the junction box needs to be made of insulating material, or the inner wall of the wire track needs to be made of insulating material.
[0011] Optionally, the junction box further includes a phase sequence identifier; the phase sequence identifier is disposed on the second surface.
[0012] Phase sequence markings can be used to distinguish wires plugged into junction boxes, preventing confusion between wires after they are plugged into junction boxes because the junction boxes look the same.
[0013] Optionally, the junction box further includes a strong magnetic sheet; the strong magnetic sheet is disposed on a fifth surface parallel to the second surface.
[0014] Because meter boxes usually have a magnetic component, installing a magnetic plate on the junction box allows the junction box to be directly connected and fixed to the meter box via magnetic connection, making it convenient to use.
[0015] Optionally, the junction box further includes a universal clamp with a U-shaped clamp opening. The universal clamp is connected to the junction box via a flexible connecting tube, and the flexible connecting tube is connected to the junction box via a threaded connector.
[0016] Universal clamps allow junction boxes to be secured by clamping onto the frame of the meter box, and the clamp direction can be changed, making them suitable for a wider range of applications.
[0017] The flexible connecting tube serves two purposes: facilitating movement and providing support.
[0018] Optionally, the universal clamp includes a bottom wall, a first side wall, and a second side wall, with the first side wall connected to the second side wall via the bottom wall; a fastening screw is provided on the first side wall, with one end of the fastening screw disposed in the clamping opening and the other end of the fastening screw provided with a rotating disk.
[0019] A fastening screw is provided on the first side wall of the universal clamp. After the universal clamp clamps one side of the electrical box, the rotating disk is rotated, and the end of the fastening screw located inside the clamp extends into the clamp, reducing the width of the clamp and making the universal clamp more secure.
[0020] Anti-slip devices can be installed at the contact points between the universal clamp and the electrical box to increase friction and make the fixation between the universal clamp and the electrical box more stable.
[0021] Optionally, the first sidewall is a flat plate structure, and the second sidewall is an arc panel structure.
[0022] Optionally, the first connecting slot includes a first slot and a second slot, the opening direction of the first slot is opposite to the opening direction of the second slot; the second connecting slot includes a first clip and a second clip, the protrusion directions of the first clip and the second clip are opposite; the thickness of the first clip and the second clip is less than or equal to the opening width of the first slot and the second slot.
[0023] Optionally, a baffle is provided at one end of the first card slot and the second card slot.
[0024] This application provides a junction box that allows the wires to be plugged into the meter box during the replacement of the meter junction box, preventing short circuits, fires, or wires from being connected to the wrong sockets, thus improving the safety of the meter junction box replacement process. Attached Figure Description
[0025] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a junction box structure equipped with a strong magnetic sheet;
[0027] Figure 2 It is a type of power strip box structure equipped with a universal clip;
[0028] Figure 3 This describes the internal structure of the junction box.
[0029] Legend:
[0030] 1-Insulated screw; 2-Wire track; 21-Threaded hole; 3-Magnetic plate; 4-First connecting slot; 5-Second connecting slot; 6-Phase sequence indicator; 7-Flexible connecting tube; 8-Screw connector; 9-Universal clamp; 10-Fastening screw; 11-Bare wire; 12-Insulation layer. Detailed Implementation
[0031] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.
[0032] To provide safety during the replacement of electricity meter junction boxes, this application provides a junction box, such as... Figure 1 , Figure 2 As shown, the junction box has a cuboid structure. A wire track 2 is provided on the first surface of the junction box, and the wire track 2 is a deep hole perpendicular to the first surface. An insulated screw 1 is provided on the second surface perpendicular to the first surface, and one threaded end of the insulated screw 1 extends into the wire track 2. A first connecting slot 4 and a second connecting slot 5 are provided on the third and fourth surfaces perpendicular to the first surface, respectively. The third surface and the fourth surface are parallel to each other, and multiple junction boxes are movably connected to each other through the first connecting slot 4 and the second connecting slot 5.
[0033] After replacing the wire, temporarily insert the wire into the wire track 2 on the surface of the junction box, and then rotate the insulated screw 1. As the insulated screw 1 is rotated downwards, the threaded end of the insulated screw 1 extends longer into the wire track 2 until the threaded end of the insulated screw 1 contacts the wire inserted into the wire track 2. At this time, the wire is pressed tightly against the side wall of the wire track 2 by the pressure of the insulated screw 1 and is fixed.
[0034] The claw screw has two or more raised protrusions at one end and a threaded cylindrical rod at the other end. This device is used to temporarily hold the wires removed from the junction box during the replacement of the meter junction box. Therefore, since the wires are live, this device needs to be made of insulating material, and the claw screw itself is also made of insulating material.
[0035] The third and fourth surfaces are respectively provided with a first connecting slot 4 and a second connecting slot 5. Multiple junction boxes are movably connected to each other via the first connecting slot 4 and the second connecting slot 5. Because when replacing a meter junction box, more than one number of wires are usually removed and connected to junction boxes with the same number of wires, inserting the wires sequentially into a row of movably connected junction boxes makes it less likely to get confused, easier to secure, and improves convenience.
[0036] In some embodiments, the first connecting slot 4 and the second connecting slot 5 can be magnetically connected. For example, a magnet is provided in the first connecting slot 4, and a magnet is provided in the second connecting slot 5 that can attract the magnet in the first connecting slot 4. In this way, the magnet in the first connecting slot 4 of one power box can attract the magnet in the second connecting slot 5 of the other power box, connecting the two power boxes together.
[0037] In some embodiments, the first connecting slot 4 and the second connecting slot 5 can also be connected by a snap-fit mechanism. For example, the first connecting slot 4 has one or more movable snap-fits, and the second connecting slot 5 has protrusions at corresponding positions that can connect with the snap-fits of the first connecting slot 4. When two power boxes are connected, the first connecting slot 4 of one power box contacts the second connecting slot 5 of the other power box. The movable snap-fits on the first connecting slot 4 are fastened to the protrusions on the second connecting slot 5, connecting the two power boxes together. When it is desired to separate the connected power boxes, simply lift the movable snap-fits on the first connecting slot 4 and remove them from the protrusions on the second connecting slot 5.
[0038] In some embodiments, the first connecting slot 4 and the second connecting slot 5 can also be connected by protrusions and grooves that match each other in shape. For example, the first connecting slot 4 is a rectangular protrusion, and the second connecting slot 5 is a rectangular groove, and the shape of the groove is exactly the same as that of the protrusion.
[0039] In some embodiments, such as Figure 3 As shown, the side wall of the conductor track 2 is provided with a threaded hole 21, and an electric wire is provided in the threaded hole 21. The electric wire includes a bare conductor 11 and an insulating layer 12 covering the conductor body.
[0040] The side wall of the conductor track 2 is provided with a threaded hole 21. When the threaded end of the insulating horn screw 1 contacts the wire inserted into the conductor track 2, the wire is pressed tightly against the side wall of the conductor track 2 by the pressure of the insulating horn screw 1 and is fixed. At the same time, because the side wall in contact with the wire is provided with a thread, the friction between the wire and the side wall is increased. Under the combined action of the insulating horn screw 1 and the threaded hole 21, the wire is fixed more firmly.
[0041] The section of the wire inside the wire track 2 has had its insulation layer 12 stripped off, leaving a bare wire 11. Therefore, the junction box needs to be made of an insulating material, or the inner wall of the wire track 2 needs to be made of an insulating material.
[0042] The function of insulating materials is to isolate charged parts with different electrical potentials in electrical equipment. Therefore, insulating materials should first have high insulation resistance and withstand voltage to prevent accidents such as leakage and breakdown. Secondly, they should have good heat resistance to prevent aging and deterioration due to prolonged overheating. In addition, they should have good thermal conductivity, moisture resistance, lightning protection, high mechanical strength, and ease of processing. Based on these requirements, the performance indicators of commonly used insulating materials include insulation strength, tensile strength, specific gravity, and coefficient of thermal expansion.
[0043] Electrical insulation materials, based on their chemical properties, can be classified into inorganic, organic, and hybrid insulation materials. Commonly used inorganic insulation materials include mica, asbestos, marble, ceramics, glass, and sulfur, primarily used for winding insulation in motors and electrical appliances, switch base plates, and insulators. Organic insulation materials include shellac, resin, rubber, cotton yarn, paper, hemp, rayon, and polymers, mostly used to manufacture insulating varnishes and as insulation coatings for winding conductors. Hybrid insulation materials are various molded insulation materials made from two of the above materials through processing. Modern applications of nanotechnology have led to the development of nano-insulating materials. This involves uniformly dispersing nanoscale (range between 1 and 100 nm) powders in polymer resins, or forming or adding nanoscale crystalline or amorphous substances within the polymer, and even creating nanoscale micropores or bubbles.
[0044] In some embodiments, the junction box further includes a phase sequence identifier 6; the phase sequence identifier 6 is disposed on the second surface.
[0045] Phase sequence identifier 6 can be used to distinguish the wires plugged into the junction box, preventing confusion between wires after they are plugged into the junction box because the junction boxes look the same.
[0046] Phase sequence identifier 6 can be fixed on the junction box and cannot be changed. When using it, insert the corresponding wire into the junction box and connect it according to phase sequence identifier 6. Alternatively, phase sequence identifier 6 can be changed. When using it, first insert the wire into the junction box, then set phase sequence identifier 6 as needed and connect it.
[0047] In some embodiments, the junction box further includes a strong magnetic sheet 3; the strong magnetic sheet 3 is disposed on a fifth surface parallel to the second surface.
[0048] Because meter boxes usually have a magnetic component, installing a magnetic plate on the junction box allows the junction box to be directly connected and fixed to the meter box via magnetic connection, making it convenient to use.
[0049] Suction cups can also be installed on the junction box, because the surface of the meter box is generally smooth and flat, and the suction cups can be used to fix the junction box to the meter box for easy use.
[0050] In some embodiments, such as Figure 2 As shown, the junction box also includes a universal clamp 9, the clamp opening of the universal clamp 9 is U-shaped, the universal clamp 9 is connected to the junction box through a flexible connecting tube 7, and the flexible connecting tube 7 is connected to the junction box through a threaded connector 8.
[0051] The Universal Clip 9 allows the junction box to be fixed by clamping the frame of the meter box, and the Universal Clip 9 can change the direction of the clamp, making it more versatile in application scenarios.
[0052] The flexible connecting tube 7 serves a fixing function. Although the flexible connecting tube 7 can be bent manually, it also has a certain supporting force. When the flexible connecting tube 7 is set into a certain shape, it can support and fix the socket box connected to the flexible connecting tube 7.
[0053] The flexible connecting tube 7 also facilitates movement. When workers are replacing junction boxes, they may not always be in one position. If they want the junction box to always be in a comfortable position, they need to move it. If the junction box is directly fixed to the electrical box, it is very troublesome to move it. If the flexible connecting tube 7 is connected, the junction box can be moved directly by bending the flexible connecting tube 7.
[0054] The flexible connecting tube 7 can be made of carbon steel, which can withstand repeated bending tests by the user to adjust the angle of the power strip for more comfortable use.
[0055] In some embodiments, such as Figure 2 As shown, the universal clamp 9 includes a bottom wall, a first side wall and a second side wall, the first side wall being connected to the second side wall through the bottom wall; a fastening screw 10 is provided on the first side wall, one end of the fastening screw 10 is disposed in the clamping opening, and the other end of the fastening screw 10 is provided with a rotating disk.
[0056] A fastening screw 10 is provided on the first side wall of the universal clamp 9. After the universal clamp 9 clamps one side of the electrical box, the rotating disk is rotated, and the end of the fastening screw 10 located inside the clamp extends into the clamp, the width of the clamp narrows, and the universal clamp 9 is fixed more firmly.
[0057] In some embodiments, the first sidewall is a flat plate structure and the second sidewall is an arc panel structure.
[0058] An anti-slip device can be installed at the point where the universal clamp 9 contacts the electrical box to increase friction and make the fixation between the universal clamp 9 and the electrical box more stable.
[0059] The anti-slip device can be made of materials such as natural rubber and PVC. Natural rubber has good softness, excellent elasticity, strong resistance to acids and alkalis, and good overall wear resistance. However, rubber is not heat-resistant; exposure to sunlight or high temperatures may damage it. PVC foam, also known as PVC closed-cell foam or polyvinyl chloride foam, is an independent closed-cell foam material made primarily of polyvinyl chloride plastic through high-temperature mixing, with the addition of foaming agents and other additives. PVC is waterproof, anti-slip, dustproof, and fireproof, but over time, dust and other stains can accumulate on it, so it needs to be cleaned regularly.
[0060] The anti-slip device can be a pattern, which can be set directly on the contact area between the universal clamp 9 and the electrical box, or the pattern can be set on the anti-slip material.
[0061] In some embodiments, such as Figure 1 As shown, the first connecting slot 4 includes a first slot and a second slot, the opening direction of the first slot is opposite to the opening direction of the second slot; the second connecting slot 5 includes a first clip and a second clip, the protrusion directions of the first clip and the second clip are opposite; the thickness of the first clip and the second clip is less than or equal to the opening width of the first slot and the second slot.
[0062] The junction boxes are connected by a first connecting slot 4 and a second connecting slot 5. The first connecting slot 4 and the second connecting slot 5 are connected and fixed by grooves and protrusions of corresponding shapes.
[0063] In some embodiments, a baffle is provided at one end of the first card slot and the second card slot.
[0064] A baffle is provided at one end to ensure that when the second card is inserted between the first card, it enters from one end and is blocked by the baffle at the other end, preventing the second card from sliding out directly from the other end after sliding in from one end, thus improving the stability of the connection between the cards.
[0065] Through the above embodiments, this application provides a junction box. The junction box has a cuboid structure. A wire track 2 is provided on the first surface of the junction box, and the wire track 2 is a deep hole perpendicular to the first surface. An insulated screw 1 is provided on the second surface perpendicular to the first surface, and the threaded end of the insulated screw 1 extends into the wire track 2. A first connecting slot 4 and a second connecting slot 5 are respectively provided on the third and fourth surfaces perpendicular to the first surface. The third and fourth surfaces are parallel to each other, and multiple junction boxes are movably connected to each other through the first connecting slot 4 and the second connecting slot 5. The junction box also includes a phase sequence indicator 6, a strong magnetic sheet 3, a universal clamp 9, a flexible connecting tube 7, a threaded rod connector 8, and a fastening screw 10. During the replacement of the meter junction box, the wire can be plugged into the meter box to avoid short circuits or fires or connecting the wire to the wrong socket, thus improving the safety of the meter junction box replacement process.
[0066] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.
Claims
1. A junction box, characterized in that, The junction box is a cuboid structure. A wire track (2) is provided on the first surface of the junction box. The wire track (2) is a deep hole perpendicular to the first surface. An insulated screw (1) is provided on the second surface perpendicular to the first surface. One end of the insulated screw (1) with a thread extends into the wire track (2). A first connecting slot (4) and a second connecting slot (5) are provided on the third and fourth surfaces perpendicular to the first surface, respectively. The third surface and the fourth surface are parallel to each other. Multiple junction boxes are movably connected to each other through the first connecting slot (4) and the second connecting slot (5). It also includes a universal clamp (9), the universal clamp (9) has a U-shaped clamping structure, the universal clamp (9) is connected to the junction box through a flexible connecting tube (7), and the flexible connecting tube (7) is connected to the junction box through a screw connector (8). The universal clamp (9) includes a bottom wall, a first side wall and a second side wall. The first side wall is connected to the second side wall through the bottom wall. A fastening screw (10) is provided on the first side wall. One end of the fastening screw (10) is located in the clamping opening, and the other end of the fastening screw (10) is provided with a rotating disk. The first sidewall is a flat plate structure, and the second sidewall is an arc panel structure; The first connecting slot (4) includes a first slot and a second slot, the opening direction of the first slot is opposite to the opening direction of the second slot; the second connecting slot (5) includes a first clip and a second clip, the protrusion directions of the first clip and the second clip are opposite; the thickness of the first clip and the second clip is less than or equal to the opening width of the first slot and the second slot.
2. The junction box according to claim 1, characterized in that, The side wall of the conductor track (2) is provided with a threaded hole (21), and an electric wire is provided in the threaded hole (21). The electric wire includes a conductor (11) and an insulating layer (12) covering the conductor (11).
3. The junction box according to claim 2, characterized in that, It also includes a phase sequence identifier (6); the phase sequence identifier (6) is disposed on the second surface.
4. The junction box according to claim 3, characterized in that, It also includes a strong magnetic sheet (3); the strong magnetic sheet (3) is disposed on a fifth surface parallel to the second surface.
5. The junction box according to claim 1, characterized in that, A baffle is provided at one end of the first and second card slots.