A wire-free power supply device for a user meter switch
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-08-11
AI Technical Summary
[0002]为解决智能电表更换工作导致的停电问题，降低客户停电时长，提升客户用电满意度，现存在无感知带电更换电能表的需求
本实用新型的一种用户表开关的免拆线取电装置，首先通过绝缘材质制成的插头壳体和绝缘壳体，将带电部件隔离在取电装置内部，并为接电单元及挂接固定单元提供主体支撑；通过接电螺栓为绝缘壳体施加向上顶撑力，并通过带有限位钩的挂接钩板为绝缘壳体施加向下拉力，以此将绝缘壳体牢固固定在用户电表开关的外壳体上。
Smart Images
Figure CN224625963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power construction tools, specifically a power supply device for user meter switches that does not require disconnection. Background Technology
[0002] To address power outages caused by smart meter replacement, reduce customer downtime, and improve customer satisfaction, there is a need for seamless, live-line meter replacement. Firstly, the replacement process involves operational safety and technical limitations, leading to longer replacement times and increased service risks for workers. Secondly, current live-line meter replacement technology has significant limitations. Existing devices cannot yet monitor and self-check abnormal wiring connections, and cannot handle large operating currents. In practice, workers must repeatedly check incoming and outgoing line connections and manually short-circuit the meter to be replaced, resulting in low efficiency. Finally, electricity consumption during replacement cannot be collected and metered, causing additional problems for the power company such as power loss and increased line losses. There are no literature reports or real-time applications of self-checking seamless live-line meter replacement devices, hindering the safe, convenient, and rapid implementation of seamless live-line meter replacement.
[0003] In addition, when performing short-circuit construction on the aforementioned electricity meters, in order to ensure uninterrupted power supply, workers need to manually cut the outer sheath of the wires to expose the conductive copper core, and then use wires to connect the cut wires to make short-circuit connections. However, this process is complex and the live operation is extremely dangerous.
[0004] Therefore, how to design a power supply device for user meter switches that does not require wire removal, so as to achieve power supply to the switch or short-circuit construction of the meter without breaking the wires, has become a technical problem that urgently needs to be solved by people in this field. Summary of the Invention
[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a non-disconnection power supply device for user meter switches. This device allows for power supply construction without breaking electrical wires, maximizing the safety of construction personnel during live-line work. Furthermore, the device is convenient and quick to install and remove, facilitating efficient and seamless live-line meter replacement work for power companies. It ensures a safe and reliable power supply to residents during meter replacement and renovation, and effectively improves the work efficiency of power companies.
[0006] To solve the above problems, this utility model provides a power supply device for a user meter switch that does not require disconnection. The power supply device is fixedly fastened to the housing of the user meter switch, and the power supply device has two sets that are respectively connected to the neutral wire fixing position and the live wire fixing position of the user meter switch. The power supply device includes an insulating housing, a power supply plug, a power connection unit, and a mounting and fixing unit; One end of the insulating housing is movably connected to the power receiving unit, the middle part of the insulating housing is slidably adjusted and plugged into the fixing unit, and the other end of the insulating housing is open and movably plugged into the power receiving connector. The power supply end of the power connection unit is in contact with the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch to conduct electricity, and the power take-off end of the power connection unit is electrically connected to the power take-off plug. One end of the mounting unit slides out of the insulating housing and is secured to the back of the user's electricity meter switch housing to fix the entire power supply device to the user's electricity meter switch housing.
[0007] Preferably, the insulating shell is provided with a first chamber, a second chamber, a third chamber and a fourth chamber in sequence, wherein the bottom of the first chamber and the second chamber are open, and the top of the third chamber and the fourth chamber are open; The power supply terminal of the power receiving unit is movably connected in the first chamber, and the power taking terminal of the power receiving unit passes through the second chamber and the third chamber in sequence, and extends into the fourth chamber. The second chamber features a movable plug-in and mounting fixing unit; The third and fourth chambers are open and can be connected to power plugs.
[0008] Preferably, the power connection unit includes a power connection bolt and a conductive copper sheet, wherein the power connection bolt penetrates and is threadedly connected to the insulating housing, a radially protruding limiting ring is integrally formed in the middle of the power connection bolt, a power connection spring and a conductive copper sheet are sleeved in the middle of the power connection bolt, and the end of the power connection bolt contacts and is electrically connected to the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch. The two axial end faces of the electric spring elastically abut against the limiting ring and the conductive copper sheet, respectively. The conductive copper sheet penetrates the first, second, third, and fourth chambers inside the insulating shell, with a conductive constraint sleeve fixedly connected to the conductive copper sheet located in the third chamber.
[0009] Preferably, the mounting and fixing unit includes mounting bolts, mounting springs, locking nuts, and mounting hook plates; The hook plate has a U-shaped cross-section and is made of insulating material. The top of the hook plate penetrates the connecting hook bolt, the middle of the hook plate penetrates the bottom opening of the second chamber, and the conductive copper sheet of the power connection unit and the live wire or neutral wire connected to the user's meter switch are penetrated in sequence inside the hook plate. The bottom of the hook plate has a fixed limit hook that is fastened to the back of the user's meter switch housing. The mounting bolt slides axially and penetrates into the second cavity of the insulating shell. The mounting bolt is fitted with a mounting spring, and the mounting bolt is threadedly connected to a locking nut. The two axial end faces of the hook spring elastically abut against the partition inside the second chamber and the top surface of the hook plate that is bent at the top; The axial end face of the locking nut fits against the bent bottom surface of the hook plate.
[0010] Preferably, the power-feeding plug includes a plug housing, a power signal contact rod, and a power-feeding contact rod. The power-feeding contact rod is fixed and inserted through the third chamber of the plug housing corresponding to the position of the insulating housing, and the power signal contact rod is fixed and inserted through the fourth chamber of the plug housing corresponding to the position of the insulating housing. The power-feeding contact rod is conductively inserted into the conductive constraint sleeve located in the third chamber of the conductive copper sheet.
[0011] The advantages of this utility model compared with the prior art are as follows: This utility model discloses a user meter switch power-taking device that does not require disconnection. First, the live parts are isolated inside the power-taking device by a plug shell and an insulating shell made of insulating material, which also provide the main support for the power-connecting unit and the hanging and fixing unit. The insulating shell is subjected to an upward supporting force by the power-connecting bolts and a downward pulling force by the hanging hook plate with a limit hook, thereby firmly fixing the insulating shell to the outer shell of the user meter switch.
[0012] Regarding the power extraction function, during construction, the power extraction device of this utility model is installed at the neutral wire connection and the live wire connection position of the user's electricity meter switch, respectively. A connecting bolt contacts the conductive copper sheet and electrically connects it. To extract power, simply insert the power extraction plug into the third and fourth chambers of the insulating housing, allowing the power extraction contact rod to be inserted into the conductive constraint sleeve in the third chamber for power extraction, and inserting the power signal contact rod into the fourth chamber and abutting against the conductive copper sheet to receive protection signals. In actual construction, the power signal contact rod and the power extraction contact rod, which penetrate the plug housing, are connected to other construction equipment or circuits to achieve power extraction from the switch or short-circuit construction of the electricity meter without breaking the wires under live working conditions. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a three-dimensional structural illustration of the present invention (with the power plug not inserted and a cross-sectional view of the insulating shell and the side wall of the power plug). Figure 2 This is a side view of the present invention (with the power plug not inserted and the insulating shell and the side wall of the power plug cut open). In the diagram: 1-Plug housing; 2-Power signal contact rod; 3-Power supply contact rod; 4-Fourth chamber; 5-Third chamber; 6-Insulating housing; 7-Second chamber; 8-First chamber; 9-User meter switch; 10-Live wire or neutral wire; 11-Conductive copper sheet; 12-Conductive constraint sleeve; 13-Hanging bolt; 14-Partition plate; 15-Hanging spring; 16-Power connection nut; 17-Power connection bolt; 18-Limiting ring; 19-Power connection spring; 20-Locking nut; 21-Limiting hook; 22-Hanging hook plate. Detailed Implementation
[0015] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0016] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0017] The present invention will now be described in further detail with reference to the accompanying drawings.
[0018] Combination Figures 1-2 The present invention relates to a non-disconnection power supply device for a user meter switch 9. The power supply device is fixedly fastened to the housing of the user meter switch, and the power supply device has two sets which are respectively connected to the neutral wire fixing position and the live wire fixing position of the user meter switch. The power supply device includes an insulating housing 6, a power supply plug, a power connection unit, and a mounting and fixing unit; One end of the insulating housing is movably connected to the power receiving unit, the middle part of the insulating housing is slidably adjusted and plugged into the fixing unit, and the other end of the insulating housing is open and movably plugged into the power receiving connector. The power supply end of the power connection unit is in contact with the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch to conduct electricity, and the power take-off end of the power connection unit is electrically connected to the power take-off plug. One end of the mounting unit slides out of the insulating housing and is secured to the back of the user's electricity meter switch housing to fix the entire power supply device to the user's electricity meter switch housing.
[0019] Preferably, the insulating shell is provided with a first chamber 8, a second chamber 7, a third chamber 5 and a fourth chamber 4 in sequence, wherein the bottom of the first chamber and the second chamber are open, and the top of the third chamber and the fourth chamber are open; The power supply terminal of the power receiving unit is movably connected in the first chamber, and the power taking terminal of the power receiving unit passes through the second chamber and the third chamber in sequence, and extends into the fourth chamber. The second chamber features a movable plug-in and mounting fixing unit; The third and fourth chambers are open and can be connected to power plugs.
[0020] Preferably, the power connection unit includes a power connection bolt 17 and a conductive copper sheet 11, wherein the power connection bolt penetrates and is threadedly connected to the insulating housing, and a radially protruding limiting ring 18 is integrally formed in the middle of the power connection bolt, a power connection spring 9 and a conductive copper sheet are sleeved in the middle of the power connection bolt, and the end of the power connection bolt contacts and is electrically connected to the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch; The two axial end faces of the electric spring elastically abut against the limiting ring and the conductive copper sheet, respectively. The conductive copper sheet penetrates the first, second, third, and fourth chambers inside the insulating shell, and a conductive constraint sleeve 12 is fixedly connected to the conductive copper sheet located in the third chamber.
[0021] Preferably, the mounting and fixing unit includes a mounting bolt 13, a mounting spring 15, a locking nut 20, and a mounting hook plate 22; The hook plate has a U-shaped cross-section and is made of insulating material. The top of the hook plate penetrates the connecting hook bolt, the middle of the hook plate penetrates the bottom opening of the second chamber, the conductive copper sheet of the power connection unit and the live wire or neutral wire 10 connected to the user's meter switch penetrate the hook plate in sequence, and the bottom of the hook plate has a fixed limit hook 21 that is fastened to the back of the user's meter switch housing. The mounting bolt slides axially and penetrates into the second cavity of the insulating shell. The mounting bolt is fitted with a mounting spring, and the mounting bolt is threadedly connected to a locking nut. The two axial end faces of the hook spring elastically abut against the partition 14 inside the second chamber and the top surface of the hook plate that is bent at the top; The axial end face of the locking nut fits against the bent bottom surface of the hook plate.
[0022] Preferably, the power-feeding plug includes a plug housing 1, a power signal contact 2, and a power-feeding contact 3. The power-feeding contact is fixed and inserted through the third chamber of the plug housing corresponding to the position of the insulating shell, and the power signal contact is fixed and inserted through the fourth chamber of the plug housing corresponding to the position of the insulating shell. The power-feeding contact is conductively inserted into the conductive constraint sleeve located in the third chamber of the conductive copper sheet.
[0023] In addition, in a preferred embodiment of this utility model, the power-connecting bolt and the insulating housing can be connected by threaded engagement using mature methods in the prior art. In this embodiment, a partition plate is fixedly provided in the first cavity of the insulating housing. The partition plate is axially fitted with the inner wall of the insulating housing to clamp the power-connecting nut 16. The power-connecting nut is threadedly connected to the power-connecting bolt, thereby improving the threaded connection life between the power-connecting bolt and the insulating housing and avoiding the problem of stripping when the bolt hole is opened in the insulating housing.
[0024] The electrical connection construction process of this utility model is as follows: First, attach the power supply device from top to bottom and then from left to right onto one side of the user's electricity meter switch casing. Figure 2 As shown, it is important to ensure that the wire (live or neutral) originally connected to the user's meter switch is cleared through the hook plate. This ensures that the power-taking bolt is aligned with the neutral or live wire fixing position of the user's meter switch. First, tighten the hook bolt to initially position the entire power-taking device on the user's meter casing. Then, tighten the power-taking bolt until it contacts the neutral or live wire fixing position, at which point the conductive copper sheet becomes energized. Finally, insert the power-taking plug into the insulating casing, allowing the power-taking contact rod to insert into the conductive constraint sleeve to establish a power supply connection. Simultaneously, ensure the power signal contact rod contacts the conductive copper sheet to receive protection signals in real time. Finally, connect external wiring to the exposed power-taking contact rod and power signal contact rod above the power-taking plug to enable power supply from the switch or to perform meter short-circuit repairs.
[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited to this. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A non-disconnection power supply device for a user meter switch, wherein the power supply device is fixedly fastened to the housing of the user meter switch, and the power supply device has two sets and is respectively connected to the neutral wire fixing position and the live wire fixing position of the user meter switch. Its features are: The power supply device includes an insulating shell, a power supply plug, a power connection unit, and a mounting and fixing unit; The insulating housing has a power receiving unit movably connected to one end, a fixed unit slidably adjusted and plugged into the middle of the insulating housing, and the other end of the insulating housing is open and movably plugged into and connected to the power receiving connector. The power supply end of the power receiving unit is in contact with the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch for electrical conduction, and the power taking end of the power receiving unit is electrically connected to the power taking plug. One end of the mounting and fixing unit slides out of the insulating shell and is fixed to the back of the user's electricity meter switch shell to fix the entire power supply device to the user's electricity meter switch shell.
2. The non-disconnection power supply device for a user meter switch according to claim 1, characterized in that: The insulating shell is provided with a first chamber, a second chamber, a third chamber and a fourth chamber in sequence, wherein the bottom of the first chamber and the second chamber are open, and the top of the third chamber and the fourth chamber are open; The power supply terminal of the power receiving unit is movably connected in the first chamber, and the power taking terminal of the power receiving unit passes through the second chamber and the third chamber in sequence, and extends into the fourth chamber; The second chamber contains a movable plug-in mounting and fixing unit; The third and fourth chambers are open and can be connected to a power plug.
3. The user meter switch power supply device without disconnection according to claim 2, characterized in that: The power connection unit includes a power connection bolt and a conductive copper sheet. The power connection bolt penetrates and is threadedly connected to the insulating housing. A radially protruding limiting ring is integrally formed in the middle of the power connection bolt. A power connection spring and a conductive copper sheet are sleeved in the middle of the power connection bolt. The end of the power connection bolt contacts and is electrically connected to the neutral wire fixed position or the live wire fixed position of the user's electricity meter switch. The two axial end faces of the electric spring elastically abut against the limiting ring and the conductive copper sheet, respectively. The conductive copper sheet penetrates the first, second, third, and fourth chambers inside the insulating shell, and a conductive constraint sleeve is fixedly connected to the conductive copper sheet located in the third chamber.
4. The non-disconnection power supply device for a user meter switch according to claim 2, characterized in that: The mounting and fixing unit includes mounting bolts, mounting springs, locking nuts, and mounting hook plates; The hook plate has a U-shaped cross-section and is made of insulating material. The top of the hook plate penetrates the connecting hook bolt, the middle of the hook plate penetrates the bottom opening of the second chamber, the conductive copper sheet of the power connection unit and the live wire or neutral wire connected to the user's meter switch penetrate the hook plate in sequence, and the bottom of the hook plate has a fixed limit hook that is fastened to the back of the user's meter switch housing. The mounting bolt slides axially and penetrates into the second cavity of the insulating shell. A mounting spring is fitted on the mounting bolt, and a locking nut is threadedly engaged on the mounting bolt. The two axial end faces of the hook spring elastically abut against the partition inside the second chamber and the top surface of the hook plate that is bent at the top. The axial end face of the locking nut abuts against the bent bottom surface of the hook plate.
5. The non-disconnection power supply device for a user meter switch according to claim 2, characterized in that: The power-gathering plug includes a plug housing, a power signal contact rod, and a power-gathering contact rod. The power-gathering contact rod is fixed and inserted through the third chamber of the plug housing corresponding to the position of the insulating shell, and the power signal contact rod is fixed and inserted through the fourth chamber of the plug housing corresponding to the position of the insulating shell. The power-gathering contact rod is conductively inserted into a conductive constraint sleeve located in the third chamber of the conductive copper sheet.