Copper bar crossing structure between incoming line chamber and meter chamber for electric energy metering box
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-30
- Publication Date
- 2026-08-11
Smart Images
Figure CN122552950A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of copper busbar crossing structures, and in particular to copper busbar crossing structures used between the incoming line compartment and the meter compartment of an electricity metering box. Background Technology
[0002] A metering distribution box is a low-voltage power distribution device that assembles switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements.
[0003] Metering distribution boxes are typically divided by partitions into an incoming line compartment and a meter compartment. The incoming line compartment connects to the external power grid and is a high-voltage, high-current area, prohibited to unauthorized personnel. The meter compartment houses the electricity meters and is the metering operation area, accessible to metering personnel. The copper busbar, a core component connecting the two compartments and enabling high-current transmission, runs through the partition and its design quality directly impacts the safety performance and lifespan of the metering box.
[0004] In existing technologies, copper busbar crossing structures are generally fixedly installed on partition plates. However, when current flows through the copper busbar, temperature changes will cause thermal displacement in unpredictable directions. Fixed installation cannot compensate for this thermal displacement, resulting in severe stress concentration. At the same time, the copper busbar crossing structure is also easily damaged when subjected to external cable tension, reducing the stability of the connection between the cable and the copper busbar crossing structure. Therefore, there is an urgent need to design a copper busbar crossing structure to improve the stability and lifespan of the copper busbar crossing structure during use. Summary of the Invention
[0005] To improve the stability and lifespan of the copper busbar crossing structure during use, this application provides a copper busbar crossing structure for use between the incoming line compartment and the meter compartment of an electricity metering box.
[0006] The copper busbar passage structure between the incoming line compartment and the meter compartment of the electricity metering box provided in this application adopts the following technical solution: A copper busbar passage structure between the inlet compartment and the meter compartment of an electricity metering box includes a copper busbar, an insulating plate, and a buffer mechanism. The insulating plate has mounting holes with sliding grooves. The buffer mechanism includes: The elastic wrapping assembly consists of multiple sliding parts connected in different sliding directions that cooperate to form an annular wrapping hole through which the copper busbar passes. This allows two adjacent sliding parts to maintain a tendency to move closer to each other under the action of elasticity, and to press against the outer surface of the copper busbar for positioning under the action of elasticity. A sealing ring is placed on the wrapping hole and presses against the outer surface of the copper busbar under the action of elasticity to seal it; The elastic component is disposed on the elastic wrapping component and is located in four different directions of the elastic wrapping component, and is positioned by pressing against the sliding groove; When the copper busbar is deformed and subjected to force, it first squeezes the sealing ring for buffering, and then pushes the moving part to move to buffer after overcoming the elastic force of the elastic wrapping component and the elastic component.
[0007] By adopting the above technical solution, the elastic wrapping component and sealing ring are fitted onto the copper busbar for positioning. Under the action of elastic force, the elastic wrapping component and sealing ring are pressed against the outer surface of the copper busbar for positioning. Then, the insulating plate is fixedly installed on the partition plate. The two ends of the copper busbar extend into the inlet chamber and the meter chamber, and the two ends of the copper busbar are respectively connected to the cables located inside. Therefore, when the copper busbar is deformed and subjected to force, it first squeezes the sealing ring for buffering. As the force increases, the copper busbar pushes the sealing ring to move and overcomes the elastic force of the elastic wrapping component and the elastic component to push the moving part to move for buffering. This can greatly improve the stability and lifespan of the copper busbar during use.
[0008] By combining sealing rings, elastic wrapping components, and elastic components, the copper busbar can move and buffer when deformed and stressed. At the same time, multiple moving parts with different sliding directions can move and buffer from multiple different directions when the copper busbar deforms and moves, further improving the buffering effect and greatly improving the stability and lifespan of the copper busbar during use.
[0009] A two-stage energy absorption path is formed, consisting of a "first-stage flexible buffer with a sealing ring + a second-stage sliding buffer with an elastic wrapping component / elastic component". This gradually absorbs the displacement and impact forces generated by the thermal expansion and contraction of the copper busbar, installation misalignment, and operational vibration, thus avoiding wear of the copper busbar, cracking of the insulation board, and failure of the sealing structure caused by rigid contact between the copper busbar and the insulation board.
[0010] The elastic wrapping components rely on elastic force to drive the moving parts to move closer to each other, causing the sealing ring to always elastically press against the outer surface of the copper busbar. When the copper busbar produces radial displacement or dimensional deviation, the wrapping hole can adaptively shrink / expand with the copper busbar, ensuring that the sealing ring fits the copper busbar throughout the process, continuously blocking moisture and dust from entering the meter chamber, and improving the protection level and sealing reliability.
[0011] The elastic components are distributed in four different directions of the elastic wrapping component. With the guiding effect of the sliding groove, they can adapt to the deformation and displacement of the copper busbar in any direction in the radial plane. They are compatible with the multi-directional deformation of the copper busbar due to thermal expansion and contraction, installation errors, and multi-directional forces due to equipment vibration, thus greatly improving the structural fault tolerance.
[0012] The internal stress caused by thermal expansion and contraction of the copper busbar due to temperature changes can be released by sliding the moving part, avoiding fatigue fracture and loosening of the terminals caused by long-term rigid constraint of the copper busbar, and reducing the risk of equipment failure. The insulating plate serves as the load-bearing base and also provides electrical insulation isolation between the incoming line compartment and the meter compartment; the sliding groove is integrated into the mounting holes of the insulating plate, and the buffer structure is embedded in the insulating plate, resulting in a compact overall structure that does not require additional space inside the box.
[0013] Optionally, the elastic wrapping component includes: Four wrapping blocks are connected end to end by a connector to form a ring structure. The wrapping hole is formed by the cooperation of the four wrapping blocks. The outer side wall of the four wrapping blocks is provided with an annular wrapping groove. The wrapping hole is provided with an annular mounting groove. The sealing ring is snapped into the mounting groove for positioning. Multiple moving parts are formed by the four wrapping blocks. The elastic telescopic component is ring-shaped and snaps into the packaging groove, causing the four packaging blocks to tend to move closer to the sealing ring in different directions of movement.
[0014] By adopting the above technical solution, the elastic telescopic component is fitted onto the four wrapping blocks and snapped into the wrapping groove. This allows the four mutually perpendicular movement directions to better buffer the copper busbar when it is subjected to force and deformation. At the same time, the structure is simple and stable, and easy to replace, which greatly improves the stability and lifespan of the copper busbar during use.
[0015] The four wrapping blocks are modular, allowing them to be individually fitted onto the copper busbar before being assembled into a ring. This solves the problem of one-piece ring structures being unable to be fitted from the end of the copper busbar, making it suitable for both on-site installation and subsequent maintenance and replacement. The annular elastic expansion joint engages within the wrapping groove, applying a uniform circumferential contraction force to the four wrapping blocks. This ensures consistent pressure exerted by each wrapping block on the copper busbar, resulting in uniform circumferential sealing pressure from the sealing ring. This prevents leakage caused by insufficient local pressure, leading to more stable sealing performance.
[0016] The end of the package block is connected by a connector, which restricts the package block to radial extension and retraction, preventing circumferential deflection and misalignment. This ensures smooth movement during buffering and avoids component jamming and failure. The snap-fit structure of mounting slot one provides bidirectional radial and axial positioning for the sealing ring. During copper busbar friction and package block extension and retraction, the sealing ring will not shift or fall off, maintaining sealing position accuracy even after long-term operation.
[0017] Optionally, the package block is L-shaped and has a guide groove at one end. The connector is located on the end of the package block away from the guide groove. Two adjacent package blocks are connected by sliding the connector onto the guide groove. Two mounting grooves are provided on both ends of the package block. A sealing strip for sealing between two adjacent package blocks is snapped onto the mounting groove.
[0018] By adopting the above technical solution, the connector is slidably installed onto the guide groove, thereby allowing two adjacent wrapping blocks to slide and connect. The wrapping blocks are L-shaped, and the four wrapping blocks cooperate to form an annular wrapping hole, which buffers the deformation and stress of the copper busbar from four mutually perpendicular directions, greatly improving the stability and lifespan of the copper busbar during use.
[0019] At the same time, the gap between two adjacent package blocks is sealed by the sealing strip, so that the package blocks can still be sealed when moving and buffering. While meeting the sealing effect, it also improves the stability and lifespan of the copper busbar during use.
[0020] The L-shaped wrapping blocks are spliced end to end to form a square wrapping hole, which perfectly fits the rectangular cross-section copper busbars commonly used in the power distribution field; the matching structure of the guide groove and the connector further precisely limits the radial sliding path of the wrapping block, with high guiding accuracy and no deviation during the sliding process.
[0021] The sealing strip seals the sliding gap between adjacent package blocks, and together with the sealing ring inside the package hole, achieves a double seal on the outer periphery of the copper busbar and the joint of the package blocks. This prevents moisture and dust from penetrating through the joint gaps of the package blocks, further improving the isolation effect between the two chambers. The sealing strip snaps into the second mounting groove. When the package blocks slide relative to each other, the sealing strip expands and contracts synchronously with the gap change, always maintaining the seal on the joint gap, and the sealing performance does not decrease under dynamic operating conditions.
[0022] Optionally, multiple sealing strips and sealing rings are interconnected.
[0023] By adopting the above technical solution, multiple sealing strips and sealing rings are connected to each other, thereby forming a better sealing effect.
[0024] The sealing strip and sealing ring are integrated as a whole, completely eliminating the sealing gap at their joint and forming a continuous, uninterrupted sealed closed loop. This fundamentally prevents the possibility of moisture and dust leakage from the sealing joint, significantly improving overall sealing performance. The integrated sealing structure allows for the installation of the sealing ring and all sealing strips in one go, eliminating the need to assemble multiple separate sealing components, reducing assembly steps and lowering the probability of omissions or incorrect installations. As the sealing component is a single structure, when the copper busbar moves and causes the sealing ring to deform, the sealing strip deforms synchronously with the sliding of the wrapping block, preventing the joint from separating or the seal from failing. This results in stronger sealing reliability under dynamic buffering conditions.
[0025] Optionally, multiple elastic components are provided, and the elastic components include: Guide post one and guide post two are respectively set on the wrapping block and the sliding groove body, and the two are coaxially set; The elastic element is sleeved on guide post one and guide post two, and presses against the wrapping block and the sliding groove for positioning.
[0026] By adopting the above technical solution, the elastic element is positioned on guide post one and guide post two, and the elastic element presses against the wrapping block and the sliding groove for positioning, so that the wrapping block can move more stably, further improving the buffering effect on the copper busbar and improving the stability and life of the copper busbar during use.
[0027] The coaxially arranged dual guide pillars provide precise installation and positioning for the elastic components, while simultaneously providing secondary guidance for the sliding of the wrapping block. Together with the sliding structures at the beginning and end of the wrapping block, they form a double guiding constraint, completely preventing the wrapping block from sliding off-center or jamming, resulting in smoother buffering action. The elastic components are fitted onto the guide pillars and will not shift or fall off during operation. The elastic force is always applied along the axial direction of the guide pillars (i.e., the radial direction of the wrapping block), ensuring stable and lossless buffering force and higher energy absorption and buffering efficiency. Multiple sets of elastic components are distributed around the wrapping block, forming multi-point elastic support. Displacement of the copper busbar in any direction can trigger compression and buffering of the corresponding elastic components, resulting in more uniform overall force distribution and stronger impact and deformation resistance.
[0028] Optionally, a mounting plate is slidably mounted on the package block along the sliding direction of the package block, and the guide post is set on the mounting plate.
[0029] By adopting the above technical solution, when the package block moves to provide buffering, the package block moves relative to the mounting plate, making it easier for the package block to move and provide buffering, thereby further improving the buffering effect of the copper busbar and increasing the stability and lifespan of the copper busbar during use.
[0030] The sliding adjustment function of the mounting plate can offset the dimensional deviations caused by the machining of the insulating plate sliding groove and the wrapping block, ensuring the coaxiality of guide post one and guide post two, avoiding guide post jamming and elastic component sticking due to machining errors, reducing the precision requirements of component machining, and improving the product assembly qualification rate. When the copper busbar is subjected to oblique force, the mounting plate can slide slightly in the direction of the force, automatically adjusting the guide post angle, avoiding the guide post from bearing lateral bending force, reducing abnormal wear of the guide post and elastic component, and extending the service life of the component.
[0031] Optionally, two insulating plates are spaced apart and press against the partition plate, and are connected to each other by a connecting component; the sliding groove penetrates the side wall of the insulating plate near the partition plate and is sealed by a sealing component, and the sealing component and the two sliding grooves cooperate to form a sliding cavity for the elastic wrapping component to slide.
[0032] By adopting the above technical solution, the sealing component can be removed after the insulating plate is taken off the partition plate. This facilitates the replacement of the elastic component and the elastic wrapping component through the moving slot. After the replacement is completed, the sealing component is engaged with one of the moving slots, and then the two insulating plates are fixedly installed on the partition plate so that the sealing component is engaged with the other moving slot. This allows the replacement of the elastic component and the elastic wrapping component, further improving the stability and lifespan of the copper busbar during use.
[0033] Two insulating boards are located on either side of the partition, forming a double electrical insulation barrier. Even if one side of the insulating board is damaged or experiences creepage, the other side can still ensure insulation isolation between the incoming line compartment and the meter compartment, significantly improving electrical safety redundancy and meeting the insulation safety specifications for metering boxes. The sliding grooves of the two insulating boards, in conjunction with the sealing components, form a closed sliding cavity, enclosing the elastic wrapping components, elastic elements, and other moving parts within. This prevents dust and moisture from corroding the sliding surface and elastic elements, preventing component aging and jamming, and extending the structural service life and maintenance cycle. The entire through-passage structure can be pre-assembled into a single module and directly fixed to the partition board via connecting components, minimizing on-site installation steps and adapting to mass production and engineering construction.
[0034] Optionally, the plugging assembly includes: The sealing ring is snapped onto two sliding grooves; Two retaining rings are set on the sealing ring and positioned against the opposite side walls of the two insulating plates.
[0035] By adopting the above technical solution, the sealing block is snapped onto the movable slot, so that the retaining ring abuts against the insulating plate for positioning. After the two insulating plates are installed on the partition plate, the other end of the sealing ring is snapped onto another movable slot for positioning. The two retaining rings abut against the two insulating plates for positioning. At the same time, after the two insulating plates are removed from the partition plate, the sealing block can be removed, thereby sealing the movable slot. This facilitates the replacement of the elastic component and the elastic wrapping component, and further improves the stability and lifespan of the copper busbar during use.
[0036] The sealing ring is positioned by simply inserting it into the sliding groove of the two insulating plates, requiring no additional fasteners. The assembly process is simple, and coaxiality and positional accuracy are automatically guaranteed by the groove body. Two retaining rings abut against the opposite sidewalls of the two insulating plates, restricting both the axial movement of the sealing ring and the relative distance between the two plates. This ensures the axial stability of the sliding cavity and prevents axial displacement of the internal buffer components. The sealing ring fills the gap between the sliding grooves of the two insulating plates, and in conjunction with the contact surface between the retaining ring and the insulating plate, it improves the sealing performance of the sliding cavity, further reducing the entry of external impurities into the cavity.
[0037] Optionally, the connection component includes: A connecting screw and a connecting nut are provided. The connecting screw passes through two insulating plates and a partition plate. The connecting nut is threaded onto the connecting screw and presses against the insulating plate for positioning.
[0038] By adopting the above technical solution, two screws are passed through two insulating plates and a partition plate, and then the connecting nut is threaded onto the connecting screw, so that the connecting nut is pressed against the insulating plate for positioning.
[0039] The threaded connection of the screw and nut provides a stable clamping force, firmly holding the two insulating plates to both sides of the separator. It offers strong resistance to vibration and deformation, ensuring it won't loosen during long-term operation and exhibiting excellent structural stability. The threaded connection is a detachable structure; for later maintenance or component replacement, simply unscrew the nut to disassemble the entire structure, making operation convenient and maintenance costs low. By adjusting the locking position of the nut, it can accommodate separator plates of different thicknesses without altering the insulation plate's structure, thus broadening the product's compatibility.
[0040] Optionally, the corner of the package block is provided with an arc-shaped guide angle that facilitates the elastic telescopic component to be snapped into the package groove.
[0041] By adopting the above technical solution, the arc-shaped guide angle plays a smooth guiding role in the insertion of the elastic expansion component. During assembly, the elastic component can slide smoothly into the wrapping groove along the guide angle without forced prying, thus avoiding damage to the elastic expansion component or wrapping block during the assembly process and improving the assembly speed.
[0042] In summary, this application includes at least one of the following beneficial technical effects: 1. By combining the sealing ring, elastic wrapping component, and elastic component, the copper busbar can move and buffer when deformed and under stress. At the same time, by using multiple moving parts with different sliding directions, the copper busbar can move and buffer from multiple different directions when deformed and moved, which further improves the buffering effect and greatly improves the stability and lifespan of the copper busbar during use.
[0043] 2. By fitting the elastic telescopic component onto the four wrapping blocks and snapping it into the wrapping groove, the four mutually perpendicular movement directions can better buffer the copper busbar when it is subjected to force and deformation. At the same time, the structure is simple and stable, and easy to replace, which greatly improves the stability and lifespan of the copper busbar during use.
[0044] 3. The gap between two adjacent packaging blocks is sealed by a sealing strip, so that the packaging blocks can still be sealed when moving and buffering. At the same time, while meeting the sealing effect, it also improves the stability and lifespan of the copper busbar during use. Attached Figure Description
[0045] Figure 1 This is a three-dimensional structural diagram of the structure used for the electricity metering box and the copper busbar passageway; Figure 2 This is a three-dimensional structural diagram of the copper busbar through-structure; Figure 3 yes Figure 2 A cross-sectional schematic diagram of AA in the middle; Figure 4 yes Figure 3 Enlarged diagram of section B; Figure 5 This is a partial exploded view of the copper busbar passing through the structure; Figure 6 This is a schematic diagram of the buffer mechanism in the copper busbar crossing structure. The arrows in the diagram indicate the sliding direction of the wrapping block.
[0046] Reference numerals: 1. Electricity metering box; 11. Partition plate; 12. Connecting hole; 13. Copper busbar; 14. Inlet chamber; 15. Meter chamber; 2. Insulating plate; 21. Mounting hole; 22. Sliding groove; 3. Connecting assembly; 31. Connecting screw; 32. Connecting nut; 4. Sealing assembly; 41. Sealing ring; 42. Retaining ring; 43. Sliding cavity; 5. Buffer mechanism; 51. Sealing ring; 52. Wrapping hole; 53. Sealing strip; 6. Wrapping assembly; 61. Wrapping block; 62. Elastic telescopic component; 63. Guide groove; 64. Connector; 65. Guide angle; 66. Wrapping groove; 67. Mounting groove one; 68. Mounting groove two; 7. Elastic component; 71. Guide post one; 72. Guide post two; 73. Elastic component; 74. Mounting plate. Detailed Implementation
[0047] The following provides a further detailed description of this application.
[0048] This application discloses a copper busbar passage structure between the incoming line compartment and the meter compartment of an electricity metering box.
[0049] Reference Figures 1-4 A copper busbar passage structure for the inlet chamber and meter chamber of an electricity metering box includes a copper busbar 13, an insulating plate 2, and a buffer mechanism 5. A partition plate 11 is fixedly installed on the inner wall of the electricity metering box 1. The partition plate 11 is vertical and divides the electricity metering box 1 into an inlet chamber 14 and a meter chamber 15. A connecting hole 12 is provided on the partition plate 11. The insulating plate 2 is fixedly installed on the partition plate 11 and has a rectangular mounting hole 21. An annular sliding groove 22 is provided on the mounting hole 21. The buffer mechanism 5 is located on the sliding groove 22. The copper busbar 13 is installed on the buffer mechanism 5 and extends into the inlet chamber 14 and the meter chamber 15 at both ends. When the copper busbar 13 deforms or is subjected to force, the buffer mechanism 5 is used to move and buffer.
[0050] The sliding groove 22 is located inside the connecting hole 12. Two insulating plates 2 are spaced apart and are fixedly connected to the partition plate 11 by the connecting assembly 3, and are positioned against the opposite side walls of the partition plate 11. The sliding groove 22 passes through the side wall of the insulating plate 2 near the partition plate 11 and is sealed by the sealing assembly 4. Multiple connecting assemblies 3 are spaced apart and include connecting screws 31 and connecting nuts 32. The connecting screws 31 pass through the two insulating plates 2 and the partition plate 11 in a direction perpendicular to the insulating plates 2 and the partition plate 11. The connecting nuts 32 are threaded onto the connecting screws 31, and the heads of the connecting nuts 32 and the connecting screws 31 press against the opposite side walls of the two insulating plates 2 for positioning.
[0051] Reference Figures 1-5 The sealing assembly 4 includes a sealing ring 41 and two retaining rings 42. The sealing ring 41 is annular, and its outer wall is inserted into the sliding groove 22 located on the two insulating plates 2. The length and width of the sealing ring 41 are both greater than the length and width of the mounting hole 21. The sealing ring 41 and the sliding groove 22 cooperate to form a sliding cavity 43. The copper busbar 13 passes through the sealing ring 41. The two retaining rings 42 are fixedly installed on the outer wall of the sealing ring 41 at intervals and are pressed against the opposite side walls of the two insulating plates 2 for positioning.
[0052] The buffer mechanism 5 includes an elastic wrapping component 6, a sealing ring 51, and an elastic component 7. The elastic wrapping component 6 is formed by multiple sliding parts connected in different sliding directions to form an annular wrapping hole 52 through which the copper busbar 13 passes, so that two adjacent moving parts tend to move closer to each other under the action of elastic force, and are positioned against the outer surface of the copper busbar 13 under the action of elastic force.
[0053] Reference Figures 1-6 The elastic wrapping assembly 6 includes four wrapping blocks 61 and an elastic telescopic member 62. The four wrapping blocks 61 are slidably connected end to end by connectors 64 to form a ring structure. The wrapping blocks 61 are L-shaped. One end of the wrapping block 61 is provided with a guide groove 63. The connectors 64 are fixedly installed on the other end of the wrapping block 61. The axes of the connectors 64 and the guide grooves 63 on the same wrapping block 61 are perpendicular. The four wrapping blocks 61 are slidably installed on the sliding cavity 43. Two adjacent wrapping blocks 61 are slidably connected to the guide grooves 63 by the connectors 64, so that the four wrapping blocks 61 can move freely in four directions in the vertical plane. An arc-shaped guide angle 65 is provided at the corner of the wrapping block 61. The wrapping hole 52 is formed by the cooperation of the four wrapping blocks 61.
[0054] The outer walls of the four wrapping blocks 61 are provided with wrapping grooves 66 that fit together to form annular shapes, and the wrapping holes 52 are provided with mounting grooves 67 that fit together to form annular shapes. The elastic telescopic member 62 is a spring and is annular in shape. The elastic telescopic member 62 is snapped onto the wrapping groove 66. The sealing ring 51 is annular and is snapped onto the mounting groove 67 for positioning. The copper busbar 13 passes through the wrapping hole 52 and the sealing ring 51. Under the elastic force of the elastic telescopic member 62, the four wrapping blocks 61 tend to move closer to the sealing ring 51 in four different directions of movement, and the four wrapping blocks 61 and the sealing ring 51 are all pressed against the outer surface of the copper busbar 13 for positioning and sealing.
[0055] Multiple mounting grooves 68 are provided on both ends of the package block 61, which are connected to the mounting groove 67. The mounting grooves 68 are offset from the connector 64. Multiple sealing strips 53 are fixedly installed on the four sides of the sealing ring 51. The sealing strips 53 are snapped onto the multiple mounting grooves 68, and the sealing strips 53 extend into the sliding cavity 43.
[0056] Four sets of elastic components 7 are provided, corresponding to the four wrapping blocks 61. Multiple elastic components 7 are spaced apart in each set and located on both sides of the wrapping groove 66. The elastic component 7 includes a guide post 1 71, a guide post 2 72, and an elastic element 73. An installation plate 74 is slidably installed on the side wall of the wrapping block 61 near the sliding cavity 43. The sliding direction of the installation plate 74 is parallel to the sliding direction of the connected wrapping block 61. The guide post 1 71 is fixedly installed on the installation plate 74, and the guide post 2 72 is fixedly installed on the bottom of the sliding groove 22. The axes of the guide post 1 71 and the guide post 2 72 coincide. The elastic element 73 is a spring. The elastic element 73 is sleeved on the guide post 1 71 and the guide post 2 72, and its two ends press against the installation plate 74 and the bottom of the sliding groove 22 for positioning.
[0057] The working principle of this application embodiment is as follows: The copper busbar 13 is passed through the sealing ring 51 and the wrapping hole 52. Multiple wrapping blocks 61 and the sealing ring 51 are pressed against the outer surface of the copper busbar 13 for positioning under the elastic force of the elastic expansion member 62, so as to pass through the insulating plate 2. Then, the sealing ring 41 is sleeved on the copper busbar 13. The copper busbar 13 and the sealing ring 41 are passed through the connecting hole 12. Then, the copper busbar 13 is passed through another insulating plate 2. The two insulating plates 2 are fixedly installed on the partition plate 11, so that the sealing ring 41 is inserted into the two sliding grooves 22 to achieve sealing, and the two retaining rings 42 are respectively abutted against the two insulating plates 2 for positioning, thus completing the installation of the copper busbar passing structure.
[0058] When the copper busbar 13 deforms and is subjected to force, it first squeezes the sealing ring 51 for buffering. Then, after overcoming the elastic force of the elastic expansion member 62 and the elastic component 7, the copper busbar 13 pushes the wrapping block 61 to move for buffering. At the same time, it moves in multiple directions for buffering, thereby improving the stability and lifespan of the copper busbar 13 when it passes through the structure.
[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A copper busbar passing structure between the inlet chamber and the meter chamber of an electricity metering box, characterized in that: The system includes a copper busbar (13), an insulating plate (2), and a buffer mechanism (5). The insulating plate (2) has mounting holes (21) and sliding grooves (22) on the mounting holes (21). The buffer mechanism (5) includes: The elastic wrapping assembly (6) is formed by multiple sliding parts connected in different sliding directions to form an annular wrapping hole (52) through which the copper busbar (13) passes. This allows two adjacent moving parts to maintain a tendency to move closer to each other under the action of elastic force, and to press against the outer surface of the copper busbar (13) for positioning under the action of elastic force. A sealing ring (51) is set on the wrapping hole (52) and presses against the outer surface of the copper busbar (13) under the action of elasticity to seal; The elastic component (7) is disposed on the elastic wrapping component (6) and located in four different directions of the elastic wrapping component (6), and is positioned against the sliding groove (22); When the copper busbar (13) is deformed and subjected to force, it first squeezes the sealing ring (51) for buffering, and then pushes the moving part to move to buffer after overcoming the elastic force of the elastic wrapping component (6) and the elastic component (7).
2. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 1, characterized in that: The elastic wrapping component (6) includes: Four wrapping blocks (61) are connected end to end by a connector (64) to form a ring structure. The wrapping hole (52) is formed by the cooperation of the four wrapping blocks (61). The outer side wall of the four wrapping blocks (61) is provided with an annular wrapping groove (66). The wrapping hole (52) is provided with an annular mounting groove (67). The sealing ring (51) is snapped into the mounting groove (67) for positioning. Multiple moving parts are formed by the four wrapping blocks (61). The elastic telescopic element (62) is annular and snaps into the wrapping groove (66), causing the four wrapping blocks (61) to tend to move closer to the sealing ring (51) in different directions of movement.
3. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 2, characterized in that: The package block (61) is L-shaped and has a guide groove (63) at one end. The connector (64) is located on the end of the package block (61) away from the guide groove (63). Two adjacent package blocks (61) are connected by sliding the connector (64) onto the guide groove (63). Two mounting grooves (68) are provided on both ends of the package block (61). A sealing strip (53) for sealing between two adjacent package blocks (61) is snapped onto the mounting groove (68).
4. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 3, characterized in that: Multiple sealing strips (53) are interconnected with sealing rings (51).
5. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 2, characterized in that: Multiple elastic components (7) are provided, and each elastic component (7) includes: Guide post one (71) and guide post two (72) are respectively set on the wrapping block (61) and the sliding groove (22) and are coaxially arranged; The elastic element (73) is sleeved on the first guide post (71) and the second guide post (72), and presses against the wrapping block (61) and the sliding groove (22) for positioning.
6. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 5, characterized in that: An installation plate (74) is slidably mounted on the package block (61) along the sliding direction of the package block (61), and the guide post (71) is set on the installation plate (74).
7. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 1, characterized in that: Two insulating plates (2) are spaced apart and press against the partition plate (11), and are connected to each other by a connecting component (3); the sliding groove (22) penetrates the side wall of the insulating plate (2) near the partition plate (11) and is sealed by a sealing component (4). The sealing component (4) and the two sliding grooves (22) cooperate to form a sliding cavity (43) for the elastic wrapping component (6) to slide.
8. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 7, characterized in that: The blocking component (4) includes: The sealing ring (41) is snapped onto the two sliding grooves (22); Two retaining rings (42) are set on the sealing ring (41) and positioned against the opposite side walls of the two insulating plates (2).
9. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 7, characterized in that: The connection component (3) includes: A connecting screw (31) and a connecting nut (32) are provided. The connecting screw (31) passes through two insulating plates (2) and a partition plate (11). The connecting nut (32) is threaded onto the connecting screw (31) and presses against the insulating plate (2) for positioning.
10. The copper busbar passage structure between the inlet chamber and the meter chamber of the electricity metering box according to claim 3, characterized in that: The corner of the package block (61) is provided with an arc-shaped guide angle (65) that facilitates the snap-fit installation of the elastic telescopic component (62) onto the package groove (66).