An equipotential bonding structure

Abstract

The application relates to the technical field of electrical safety protection, and discloses an equipotential connection structure which comprises a connecting main body and a counterpiece. In the application, the quick plug structure with quick dismounting and counter-connection is adopted, the special tool is not needed, and the connection and dismounting of the conductor and the connecting main body can be completed by one key. The arc extinguishing mechanism and the quick plug structure are designed in an integrated mode, the external space is not additionally occupied, the quick plug operation is not affected, the unlocking button can be used for quickly dismounting during the later maintenance, the fault checking and the component replacement are facilitated, the arc extinguishing mechanism is embedded and installed between the conductive cavity and the quick plug connector, the conductive plate of the arc extinguishing chamber is arranged near the contact counter-connection area, when the transient large current and the arc appear, the arc can be quickly lengthened and the arc can be cooled by the multiple arc extinguishing sheets uniformly arranged in the arc extinguishing chamber, the arc can be quickly extinguished, the contact ablation is effectively prevented, the equipotential connection failure is avoided, the transient overvoltage and the electromagnetic interference are simultaneously inhibited, and the risk that the arc ignites the surrounding combustible substances is eliminated.

Description

Technical Field

[0001] This invention relates to the field of electrical safety protection technology, specifically to an equipotential bonding structure. Background Technology

[0002] Equipotential bonding is a core safety measure for eliminating potential differences between different conductive components, preventing electric shock accidents, suppressing electromagnetic interference, and protecting against lightning strikes. It is widely used in various fields such as building electrical systems, industrial equipment, medical equipment, and mining and chemical industries. However, with the increasing prevalence of modular buildings and prefabricated equipment, and the rising demands for safety levels and construction efficiency in industrial settings, several intractable technical challenges remain, as follows: On the one hand, the assembly efficiency of existing equipotential bonding structures is insufficient to meet the demands of rapid construction. Traditional equipotential bonding often employs bolt fastening, welding, or splicing of multiple conductor segments, which is cumbersome, requires specialized tools, and has a long construction cycle, making it unsuitable for rapid assembly scenarios in confined spaces. While some improved quick-connect equipotential bonding structures simplify assembly, they suffer from insufficient contact stability. On the other hand, existing equipotential bonding structures generally lack effective arc-extinguishing mechanisms, posing serious safety hazards. Under conditions such as equipment failure, lightning strikes, and operational overvoltage, equipotential bonding nodes can generate transient high currents, leading to electric arcs. The connection points of existing quick-connect and bolt-type equipotential bonding structures are mostly exposed rigid contacts without dedicated arc-extinguishing spaces or media. Continuous arc burning can erode contacts, increase contact resistance, and cause equipotential bonding failure, resulting in dangerous potential differences. In severe cases, the arc can ignite surrounding flammable materials, especially in flammable and explosive environments, easily causing fires and explosions. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an equipotential bonding structure that solves the problems of low assembly efficiency and lack of effective arc extinguishing in existing equipotential bonding structures.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an equipotential bonding structure, comprising a connecting body and a mating component, wherein the connecting body is provided with a quick-release component and an arc-extinguishing component, the quick-release component is used for quick disassembly and assembly of the mating component, and the arc-extinguishing component is used to prevent contact end ablation and avoid equipotential bonding failure; the connecting body is provided with a plurality of mounting grooves and arc-extinguishing grooves evenly distributed, and the mounting grooves and arc-extinguishing grooves are connected. The quick-release assembly includes a conductive sheet installed in the mounting slot. Two telescopic slots are symmetrically opened in the docking part. A telescopic rod is slidably connected in the telescopic slot. A top post is fixedly connected to the end of the conductive sheet near the docking part. A sliding rod is fixedly connected to the end of the top post away from the conductive sheet. A second platform is fixedly connected to the end of the sliding rod near the docking part. A locking block is fixedly connected to the end of the telescopic rod near the second platform, and the locking block engages with the second platform. The arc extinguishing assembly includes an arc extinguishing chamber installed in an arc extinguishing groove. A grid plate is fixedly connected inside the arc extinguishing chamber. Multiple arc extinguishing plates are uniformly fixedly connected to the outer wall of the grid plate. A conductive plate is installed at the input end of the arc extinguishing chamber, and the conductive plate is compatible with the arc extinguishing plates.

[0005] Preferably, a conductive cavity is provided inside the connecting body, a conductive ring is fixedly connected inside the conductive cavity, and a power transmission piece is fixedly connected to the output end of the arc extinguishing chamber, and the power transmission piece is electrically connected to the conductive ring.

[0006] Preferably, a plurality of conductive rods are uniformly fixedly connected to one end of the conductive sheet near the docking member. A guide groove is provided in the conductive rod, and an extension rod is slidably connected in the guide groove. A contact point is fixedly connected to one end of the extension rod away from the conductive sheet.

[0007] Preferably, a plurality of positioning frames are uniformly fixedly connected to the connecting body, a spline rod is slidably connected to the positioning frame, and an insert block is fixedly connected to one end of the spline rod near the connecting body.

[0008] Preferably, the docking member has a slot, and the insert block is inserted into the slot. A return spring is sleeved on the spline rod, and the return spring is located between the positioning frame and the insert block.

[0009] Preferably, two adjustment slots are symmetrically formed in the mounting groove, and a conductive post is fixedly connected to the end of the conductive sheet away from the docking part, and the conductive post is electrically connected to the conductive ring.

[0010] Preferably, the outer wall of the telescopic rod is fitted with a compression spring, the compression spring is located in the telescopic groove, and the compression spring abuts against the locking block.

[0011] Preferably, the outer wall of the slide bar is slidably connected to a first platform, which is located between the second platform and the top column.

[0012] Preferably, a ring plate is fixedly connected to one end of the docking member near the conductive sheet, and the contact point abuts against the ring plate.

[0013] Preferably, the lower surface of the connecting body is provided with a grounding terminal, and the grounding terminal is threadedly connected to the connecting body.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, by adopting a quick-connect structure, the connection and disconnection of the conductor and the connecting body can be completed with one click without the need for special tools; the arc extinguishing mechanism and the quick-connect structure are integrated into the design, which does not occupy additional external space and does not affect the quick-connect operation. During later maintenance, it can be quickly disassembled through the unlock button, which facilitates fault diagnosis and component replacement and reduces labor and maintenance costs.

[0015] 2. In this invention, by embedding the arc-extinguishing mechanism between the conductive cavity and the quick-connect connector, and arranging the conductive plate of the arc-extinguishing chamber near the contact mating area, when a transient high current or arc occurs, the arc can be quickly elongated and cooled by multiple arc-extinguishing plates evenly arranged in the arc-extinguishing chamber, thereby achieving rapid arc extinguishing, effectively preventing contact erosion, and avoiding equipotential bonding failure; at the same time, it suppresses transient overvoltage and electromagnetic interference, and eliminates the risk of the arc igniting surrounding flammable materials. It is especially suitable for high-risk scenarios such as flammable and explosive materials, lightning protection grounding, and industrial high current, thereby improving the system safety level.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of an equipotential bonding structure according to the present invention; Figure 2 This is a cross-sectional view of the connection body of an equipotential bonding structure according to the present invention. Figure 3 This is a cross-sectional view of the conductive cavity of an equipotential connection structure according to the present invention. Figure 4 This is a cross-sectional view of the mating section of an equipotential bonding structure according to the present invention. Figure 5 This is a cross-sectional view of the arc-extinguishing chamber of an equipotential connection structure according to the present invention. Figure 6 In an equipotential bonding structure of the present invention Figure 5 A magnified structural diagram at point A; Figure 7 This is a cross-sectional view of the conductive rod of an equipotential connection structure according to the present invention.

[0018] In the diagram: 1. Connecting body; 2. Positioning frame; 3. Connecting part; 4. Mounting groove; 5. Conductive cavity; 6. Arc extinguishing groove; 7. Arc extinguishing chamber; 8. Conductive ring; 9. Grounding terminal; 10. Conductive post; 11. Conductive sheet; 12. Spline rod; 13. Insert block; 14. Slot; 15. Adjustment groove; 16. Telescopic groove; 17. Telescopic rod; 18. Locking block; 19. Transmission piece; 20. Grid plate; 21. Arc extinguishing sheet; 22. Conductive plate; 23. Ring piece; 24. Conductive rod; 25. Contact point; 26. Extension rod; 27. Compression spring; 28. Top column; 29. ​​First platform; 30. Sliding rod; 31. Second platform; 32. Guide groove; 33. Return spring. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] refer to Figures 1-7 The diagram illustrates an equipotential bonding structure, comprising a connecting body 1 and a mating component 3. The connecting body 1 contains a quick-release assembly and an arc-extinguishing assembly. The quick-release assembly is used for quick assembly and disassembly of the mating component 3, while the arc-extinguishing assembly prevents contact end ablation and avoids equipotential bonding failure. The connecting body 1 has multiple evenly distributed mounting grooves 4 and arc-extinguishing grooves 6, with the mounting grooves 4 and arc-extinguishing grooves 6 communicating with each other. A specific embodiment is shown below: Example 1

[0024] The quick-release assembly includes a conductive sheet 11 installed in the mounting slot 4. Two telescopic slots 16 are symmetrically formed in the mating member 3. A telescopic rod 17 is slidably connected within the telescopic slots 16. A top post 28 is fixedly connected to the end of the conductive sheet 11 near the mating member 3. A sliding rod 30 is fixedly connected to the end of the top post 28 away from the conductive sheet 11. A second platform 31 is fixedly connected to the end of the sliding rod 30 near the mating member 3. A locking block 18 is fixedly connected to the end of the telescopic rod 17 near the second platform 31, and the locking block 18 engages with the second platform 31. Multiple positioning frames 2 are evenly fixedly connected to the connecting body 1. A splined rod 12 is slidably connected to the positioning frame 2. A plug is fixedly connected to the end of the splined rod 12 near the connecting body 1. Block 13 has a slot 14 on the docking part 3, and the insertion block 13 is inserted into the slot 14. A return spring 33 is sleeved on the spline rod 12 and is located between the positioning frame 2 and the insertion block 13. Two adjustment grooves 15 are symmetrically opened in the mounting groove 4. A compression spring 27 is sleeved on the outer wall of the telescopic rod 17 and is located in the telescopic groove 16. The compression spring 27 abuts against the locking block 18. The outer wall of the slide rod 30 is slidably connected to the first platform 29, which is located between the second platform 31 and the top column 28. Multiple conductive rods 24 are evenly fixedly connected to one end of the conductive sheet 11 near the docking part 3. A guide groove 32 is opened in the conductive rod 24 and an extension rod 26 is slidably connected in the guide groove 32.

[0025] When it is necessary to disassemble the docking part 3, first pull the spline rod 12 upward to pull the insert 13 out of the slot 14 on the docking part 3. Press the docking part 3 along the mounting groove 4 to push the locking block 18 in the telescopic groove 16 to slide the first platform 29 along the outer wall of the slide rod 30, so that the first platform 29 abuts against the top column 28. Continue to press the docking part 3. The locking block 18 is squeezed by the first platform 29. The locking block 18 and the telescopic rod 17 retract along the telescopic groove 16. The telescopic rod 17 extending from the telescopic groove 16 is located in the adjustment groove 15. The docking part 3 will not be affected by the extension of the telescopic rod 17. When the locking block 18 and the first platform 29 are conical When the ends abut, the compression spring 27 sleeved on the telescopic rod 17 pushes the locking block 18 and the telescopic rod 17 to extend out from the telescopic groove 16. The two symmetrically arranged locking blocks 18 clamp the first platform 29 and pull the docking piece 3 in the opposite direction. The locking block 18 drives the first platform 29 to slide along the outer wall of the slide rod 30, so that the first platform 29 abuts with the second platform 31. As the docking piece 3 continues to pull, the locking block 18 moves along the conical end of the first platform 29. The locking block 18 and the telescopic rod 17 retract along the telescopic groove 16. When the locking block 18 passes the abutting end of the first platform 29 and the second platform 31, the locking state between the locking block 18 and the second platform 31 is automatically released.

[0026] When the docking part 3 needs to be installed, the protruding end of the telescopic rod 17 in the docking part 3 is placed into the adjusting groove 15, and the docking part 3 is pushed into the mounting groove 4. The locking block 18 in the telescopic groove 16 moves along the conical end of the second platform 31. The locking block 18 is squeezed by the second platform 31 and retracts along the telescopic groove 16. When the locking block 18 passes the second platform 31 and moves between the first platform 29 and the second platform 31, the compression spring 27 sleeved on the telescopic rod 17 pushes the locking block 18 and the telescopic rod 17 to extend along the telescopic groove 16. The lifting spring installed in the guide groove 32 pushes the extension rod 26 to extend along the guide groove 32, pushing the locking block 18 to abut against the second platform 31. At this time, the slot 14 opened on the docking part 3 moves to below the insert block 13, releases the keyway rod 12, and the reset spring 33 pushes the insert block 13 to automatically insert into the slot 14, completing the locking of the docking part 3. Example 2

[0027] The arc extinguishing assembly includes an arc extinguishing chamber 7 installed in an arc extinguishing groove 6. A grid plate 20 is fixedly connected inside the arc extinguishing chamber 7. Multiple arc extinguishing plates 21 are evenly fixedly connected to the outer wall of the grid plate 20. A conductive plate 22 is installed at the input end of the arc extinguishing chamber 7, and the conductive plate 22 is adapted to the arc extinguishing plates 21. A conductive cavity 5 is opened inside the connecting body 1. A conductive ring 8 is fixedly connected inside the conductive cavity 5. A power transmission plate 19 is fixedly connected at the output end of the arc extinguishing chamber 7, and the power transmission plate 19 is electrically connected to the conductive ring 8.

[0028] When a transient large current, such as from equipment failure or lightning strike, causes an electric arc, the arc is directly extinguished in the arc-extinguishing chamber 7 under the guidance of the conductive plate 22 installed at the input end of the arc-extinguishing chamber 7, since the arc-extinguishing chamber 7 is connected to the conductive cavity 5. Multiple arc-extinguishing plates 21, which are evenly arranged in the arc-extinguishing chamber 7, act on the arc in time to achieve rapid elongation, cooling, and extinguishing, thus preventing the arc from spreading. Each mounting slot 4 corresponds to an independent arc-extinguishing chamber 7 and is connected to the conductive cavity 5. This design ensures that when an arc occurs in a single branch, it can be extinguished independently without affecting other branches. At the same time, the conductive cavity 5 can achieve the potential uniformity of all branches, taking into account both the independence of branches and the overall coordination. The core purpose of this design is to ensure that when an arc is generated, it can directly enter the arc-extinguishing chamber 7 and be quickly extinguished, avoiding the arc from being directly conducted to the conductive cavity 5, thus ensuring the safety and reliability of equipotential conduction. Example 3

[0029] A ring 23 is fixedly connected to one end of the docking part 3 near the conductive sheet 11, and a contact 25 abuts against the ring 23. A contact 25 is fixedly connected to one end of the extension rod 26 away from the conductive sheet 11. A conductive post 10 is fixedly connected to one end of the conductive sheet 11 away from the docking part 3, and the conductive post 10 is electrically connected to the conductive ring 8. A grounding terminal 9 is provided on the lower surface of the connecting body 1, and the grounding terminal 9 is threadedly connected to the connecting body 1.

[0030] After the aforementioned docking component 3 is installed, the ring plate 23 on the docking component 3 abuts against the contact 25 on the extension rod 26. Under the push of the lifting spring in the guide groove 32, the contact 25 always remains in contact with the ring plate 23. The current generated by the docking component 3 is conducted to the conductive plate 11 through the contact 25 and input into the conductive cavity 5 under the action of the conductive post 10. The input port of the arc-extinguishing chamber 7 is located at the abutment of the contact 25 and the ring plate 23, which is used to quickly guide the generated arc into the arc-extinguishing chamber 7. The arc-extinguishing chamber 7 only activates the arc-extinguishing function in the fault condition (arc generation), quickly extinguishes the arc, prevents the contact end from burning, does not affect the conduction of normal current, and the arc-extinguishing chamber 7 does not consume or cut off the normal working current. The current after arc extinguishing is input into the conductive cavity 5 through the transmission plate 19. The conductive cavity 5 collects the currents from all directions and transmits the current to the grounding terminal 9. The grounding terminal 9 is connected to the external grounding flat steel and grounding copper busbar to realize the connection with the total equipotential system.

[0031] The working principle of this invention is as follows: When disassembling the connecting piece 3, first pull the spline rod 12 upward to pull the insert block 13 out of the slot 14 of the connecting piece 3; press the connecting piece 3 along the mounting groove 4, and the locking block 18 in the telescopic groove 16 pushes the first platform 29 to slide along the slide rod 30 and abut against the top column 28. Continue pressing, and the locking block 18 retracts with the telescopic rod 17 after being squeezed. When it reaches the conical end, the compression spring 27 pushes the locking block 18 to extend and clamp the first platform 29. Pull the connecting piece 3 in the opposite direction, and the locking block 18 drives the first platform 29 to abut against the second platform 31. Continue pulling, and the locking block 18 retracts past the abutment end, releasing the locking and completing the disassembly.

[0032] When installing the docking part 3, align the protruding end of the telescopic rod 17 with the adjusting groove 15 and push it into the mounting groove 4. The locking block 18 retracts along the tapered end of the second platform 31. After passing the second platform 31, the compression spring 27 pushes the locking block 18 out. The lifting spring in the guide groove 32 pushes the extension rod 26 out, so that the locking block 18 abuts against the second platform 31. At this time, the slot 14 is aligned with the insert block 13. Release the keyway rod 12, and the reset spring 33 pushes the insert block 13 into the slot 14 to complete the locking.

[0033] When equipment malfunctions or lightning strikes generate transient high currents that trigger an electric arc, the arc enters the arc-extinguishing chamber 7 via the conductive plate 22 at the input end. Multiple arc-extinguishing plates 21 within the chamber rapidly elongate, cool, and extinguish the arc, preventing its spread. After the connecting piece 3 is installed, its ring plate 23 and the contact point 25 on the extension rod 26 remain in contact under the action of the lifting spring. The current after arc extinguishing enters the conductive cavity 5 via the transmission plate 19, is collected, and then transmitted to the grounding terminal 9, connecting with the external grounding component to achieve communication with the overall equipotential bonding system.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An equipotential bonding structure, comprising a bonding body (1) and a mating member (3), characterized in that: The connecting body (1) is provided with a quick-release component and an arc-extinguishing component. The quick-release component is used to quickly assemble and disassemble the docking parts (3). The arc-extinguishing component is used to prevent the contact end from burning and avoid the failure of the equipotential connection. The connecting body (1) is provided with a plurality of mounting slots (4) and arc-extinguishing slots (6) evenly distributed, and the mounting slots (4) and the arc-extinguishing slots (6) are connected. The quick-release assembly includes a conductive sheet (11) installed in the mounting slot (4), two telescopic slots (16) are symmetrically opened in the docking part (3), a telescopic rod (17) is slidably connected in the telescopic slot (16), a top post (28) is fixedly connected to one end of the conductive sheet (11) near the docking part (3), a slide rod (30) is fixedly connected to one end of the top post (28) away from the conductive sheet (11), a second body (31) is fixedly connected to one end of the slide rod (30) near the docking part (3), and a locking block (18) is fixedly connected to one end of the telescopic rod (17) near the second body (31), and the locking block (18) is engaged with the second body (31). The arc extinguishing assembly includes an arc extinguishing chamber (7) installed in an arc extinguishing groove (6). A grid plate (20) is fixedly connected inside the arc extinguishing chamber (7). Multiple arc extinguishing plates (21) are uniformly fixedly connected to the outer wall of the grid plate (20). A conductive plate (22) is installed at the input end of the arc extinguishing chamber (7), and the conductive plate (22) is compatible with the arc extinguishing plates (21).

2. The equipotential bonding structure according to claim 1, characterized in that: The connecting body (1) has a conductive cavity (5) inside, and a conductive ring (8) is fixedly connected inside the conductive cavity (5). The output end of the arc extinguishing chamber (7) is fixedly connected to a power transmission piece (19), and the power transmission piece (19) is electrically connected to the conductive ring (8).

3. The equipotential bonding structure according to claim 2, characterized in that: Multiple conductive rods (24) are uniformly fixedly connected to one end of the conductive sheet (11) near the docking part (3). A guide groove (32) is provided in the conductive rod (24). An extension rod (26) is slidably connected in the guide groove (32). A contact point (25) is fixedly connected to one end of the extension rod (26) away from the conductive sheet (11).

4. The equipotential bonding structure according to claim 1, characterized in that: Multiple positioning frames (2) are evenly fixedly connected to the connecting body (1), and a spline rod (12) is slidably connected to the positioning frame (2). A plug (13) is fixedly connected to one end of the spline rod (12) near the connecting body (1).

5. The equipotential bonding structure according to claim 4, characterized in that: The docking part (3) has a slot (14) and the insert (13) is inserted into the slot (14). The spline rod (12) is fitted with a reset spring (33) and the reset spring (33) is located between the positioning frame (2) and the insert (13).

6. The equipotential bonding structure according to claim 3, characterized in that: Two adjustment slots (15) are symmetrically opened in the mounting slot (4). The conductive plate (11) is fixedly connected to a conductive post (10) at the end away from the docking part (3), and the conductive post (10) is electrically connected to the conductive ring (8).

7. The equipotential bonding structure according to claim 1, characterized in that: The outer wall of the telescopic rod (17) is fitted with a compression spring (27), which is located in the telescopic groove (16) and abuts against the locking block (18).

8. The equipotential bonding structure according to claim 1, characterized in that: The outer wall of the slide bar (30) is slidably connected to a first platform (29), which is located between the second platform (31) and the top column (28).

9. An equipotential bonding structure according to claim 3, characterized in that: The docking piece (3) has a ring piece (23) fixedly connected to one end near the conductive sheet (11), and the contact point (25) abuts against the ring piece (23).

10. An equipotential bonding structure according to claim 2, characterized in that: The lower surface of the connecting body (1) is provided with a grounding terminal (9), and the grounding terminal (9) is threadedly connected to the connecting body (1).

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