A modular busbar quick clamping and fixing structure for a comprehensive distribution box

Abstract

The application discloses a kind of comprehensive distribution box modular busbar row quick clamping fixing structure, including distribution box body and its matched component, further include: through support symmetrical installation on the base of distribution box body, three groups of rectangular grooves are opened in the width direction of distribution box body on base, at least three groups of first stepped groove for placing busbar are opened in three groups of rectangular grooves equally.The preliminary position of busbar is limited by setting first stepped groove, the structure that cooperation screw rod drives connecting rod drives whole row sliding block synchronous translation, so that unilateral operation can realize that the round bar of all abutting blocks is extracted from sleeve simultaneously, trigger first spring to push abutting block and automatically buckling busbar side, while using the first connecting rod and second connecting rod cooperation tension spring to provide auxiliary support when being in unlocking area, realize whole row synchronous distance adjustment-magnetic attraction unlocking-spring automatic clamping-connecting rod auxiliary power-increment coherent action, substantially reduce the point-by-point clamping operation of multi-phase busbar.

Description

Technical Field

[0001] This invention relates to the field of electrical assembly technology for electrical boxes, and more specifically, to a quick-clamping and fixing structure for modular busbars in an integrated distribution box. Background Technology

[0002] Integrated distribution boxes are commonly used basic power distribution equipment in power distribution systems. Multiple sets of conductive busbars need to be installed inside the box to complete circuit connection and power distribution. The assembly efficiency, fixing stability and disassembly flexibility of the busbars directly determine the overall production and assembly efficiency of the distribution box and the convenience of daily operation and maintenance. At the same time, the fit of the busbar assembly will also affect the safety and stability of the equipment when it is powered on.

[0003] At present, the busbars inside the distribution box are generally arranged and fixed using traditional fastener locking and fixed clamping installation methods. Assembly is completed by manually aligning and locking them one by one, and the overall assembly mode is relatively simple and fixed.

[0004] Existing installation methods have certain problems in practical use. On the one hand, traditional assembly methods are cumbersome and cannot flexibly adjust the installation position and spacing of busbars according to actual power distribution conditions. They also have poor modular adaptability and take a long time to assemble and disassemble, which is not conducive to the rapid assembly and production of large-scale distribution boxes. On the other hand, traditional fixing structures have poor lateral limiting and fastening effects on busbars. During long-term operation of the equipment, busbars are prone to displacement and loosening, which can easily lead to poor circuit contact. Furthermore, the heat generated by the busbars is difficult to dissipate quickly, accelerating the aging and damage of electrical components. At the same time, during later maintenance, it is not possible to independently disassemble and debug individual busbars. Most of the time, it is necessary to disassemble and adjust the entire busbar, which makes maintenance difficult and has poor practicality. Therefore, we urgently need a modular busbar quick-clamping and fixing structure for integrated distribution boxes to solve the above problems. Summary of the Invention

[0005] One objective of this invention is to provide a new technical solution for a quick-clamping and fixing structure for modular busbars in an integrated distribution box. By setting a first stepped groove to initially limit the busbar, and cooperating with a screw-driven connecting rod to drive the entire row of sliding blocks to move synchronously, a single-sided operation can achieve the synchronous extraction of the round rods of all the clamping blocks from the sleeve, triggering the first spring to push the clamping blocks to automatically engage with the side of the busbar. At the same time, the first and second connecting rods, which are open when in the unlocking zone, cooperate with the tension spring to provide auxiliary support, realizing a continuous action of synchronous spacing adjustment of the entire row, magnetic unlocking, automatic spring clamping, and connecting rod auxiliary force enhancement. This significantly reduces the point-by-point clamping operation of multi-phase busbars and improves assembly efficiency and clamping reliability.

[0006] According to a first aspect of the present invention, a quick-clamping and fixing structure for modular busbars in an integrated distribution box is provided, comprising a distribution box body and its supporting components, and further comprising: a base symmetrically mounted on the distribution box body via a bracket, wherein the base has three sets of rectangular slots along the width direction of the distribution box body, and at least three sets of first stepped slots for placing busbars are equidistantly provided in each of the three sets of rectangular slots; and mounting seats symmetrically mounted on the distribution box body, wherein upright plates are fixedly mounted on the mounting seats, and sliding blocks are slidably provided on the mounting seats corresponding to the positions of the first stepped slots, and the sliding blocks are provided with clamping devices for engaging the busbars. The mounting base is connected to the fastening component via a driving component to form an adjustment area; the connecting frame is symmetrically installed on the main body of the distribution box, and the abutment frame is symmetrically arranged inside the main body of the distribution box and on the busbar. The number of abutment frames is adapted to the number of rectangular slots. Adjacent abutment frames are connected by connecting components to form a splicing area. The connecting frame is provided with a control component for driving the movement of the abutment frame. When three sets of abutment frames are in contact with the busbar, a first working state is formed. When three sets of abutment frames are disengaged from the busbar, a second working state is formed. When one set of abutment frames is disengaged from the busbar, a third working state is formed.

[0007] Optionally, the fastening component includes a first slide groove formed on the mounting base, the sliding block is slidably connected in the first slide groove, the sliding block has a second slide groove, the sliding block is provided with a retaining block, the bottom of the retaining block is slidably connected in the second slide groove, the second slide groove is provided with a first spring, the two ends of the first spring are respectively connected to the retaining block and the inner wall of the second slide groove, and the retaining block has a second stepped groove adapted to the side of the busbar.

[0008] Optionally, the inner wall of the second stepped groove is covered with a stabilizing pad, and the abutting block is provided with a vent for heat dissipation. The vent penetrates the abutting block, the second stepped groove and the pad in sequence, and is arranged in a straight through manner. There are multiple vents, and the multiple vents are respectively opened at each step position of the second stepped groove.

[0009] Optionally, a round rod is fixedly connected to the side of the clamping block away from the second stepped groove. A first magnetic block is embedded at the end of the round rod. The round rod has multiple arc-shaped grooves, which are equidistantly arranged along the length of the round rod. A sleeve is fixedly connected to the upright plate at the position corresponding to the round rod. A second magnetic block is fixedly connected to the bottom wall of the sleeve. A silicone plate with the same number of arc-shaped grooves is fixedly installed on the inner wall of the sleeve. When the round rod is inserted into the sleeve, the first and second magnetic blocks are magnetically attracted and positioned. The silicone plate abuts against the inner wall of the arc-shaped groove to form a positioning area. When the round rod is pulled out of the sleeve, the first and second magnetic blocks are demagnetized, and the silicone plate disengages from the arc-shaped groove to form an unlocking area.

[0010] Optionally, a support member is provided between the upright plate and the abutment block. The support member includes a first connecting rod and a second connecting rod. The adjacent ends of the first connecting rod and the second connecting rod are hinged together. The other ends of the first connecting rod and the second connecting rod are respectively hinged to the upright plate and the abutment block. A tension spring is provided between the first connecting rod and the second connecting rod. The two ends of the tension spring are respectively connected to the first connecting rod and the second connecting rod. When in the unlocking zone, the first connecting rod and the second connecting rod are open and the included angle between them increases. When in the positioning zone, the first connecting rod and the second connecting rod are closed and the included angle between them decreases.

[0011] Optionally, the driving component includes a stand fixedly mounted on a corresponding mounting base. Both sets of the stands are rotatably connected to a screw via bearings, and the screws in the two sets have opposite directions of rotation. The mounting base has a third slide groove that communicates with multiple sets of first slide grooves. A toggle ring is fixedly connected to the end of the screw. A moving block is threadedly connected to the screw. The end of the moving block is slidably connected in the third slide groove. A connecting rod is fixedly connected to the moving block. The end of the connecting rod passes through and connects to each set of sliding blocks in sequence. When the toggle ring and the screw are rotated, the moving block and each set of sliding blocks move towards or away from the busbar synchronously along the paths of the first and third slide grooves.

[0012] Optionally, each of the two sets of bases is provided with a bearing ring, which is hinged to the corresponding base via an extension rod. Each of the two sets of actuating rings is fixedly connected with a magnetic snap fastener. A rotating rod is provided between the two sets of actuating rings. The rotating rod is rotatably connected inside the bearing ring. Both ends of the rotating rod are fixedly connected with magnetic protrusions that are adapted to the magnetic snap fasteners. An anti-slip ring for easy rotation is fixedly installed in the middle of the rotating rod. When the magnetic protrusions and magnetic snap fasteners are magnetically attracted, the rotating rod is coaxial with the actuating rings on both sides and forms a connection area. When in the connection area, rotating the anti-slip ring drives the rotating rod to rotate, and the actuating ring and screw connected to it rotate accordingly.

[0013] Optionally, the control component includes a support seat mounted on a corresponding connecting frame. Each connecting frame has three sets of support seats, all three sets corresponding to a rectangular slot. Each support seat has a groove, the bottom wall of which has a circular groove. The bottom wall of the circular groove has a circular hole coaxial with the groove. A T-shaped rod is slidably connected within the circular hole. A second spring is installed within the circular groove, with its two ends connected to the T-shaped rod and the inner wall of the circular groove, respectively. An eccentric cam rod is rotatably connected within the groove via a rotating shaft. When the large-diameter end of the eccentric cam rod abuts against the T-shaped rod, the end of the T-shaped rod extends out. When the small-diameter end of the eccentric cam rod abuts against the T-shaped rod, the end of the T-shaped rod retracts.

[0014] Optionally, the clamping frame is connected to the end of the corresponding T-shaped rod. The connector includes a rectangular block installed on the middle clamping frame. A lever is symmetrically hinged on the rectangular block. The lever has a slot for insertion. A plug-in rod is installed on the clamping frames on both sides of the middle clamping frame. When the lever is rotated along its hinge axis and the slot for insertion is engaged with the plug-in rod, a mating area is formed.

[0015] Optionally, a frame is symmetrically installed inside the distribution box body. An arc-shaped sliding groove is provided on the frame corresponding to the eccentric cam rod. A pull rod is provided on the inner side of the frame. The end of the pull rod slides with the corresponding arc-shaped sliding groove. An arc-shaped locking plate is hinged on the pull rod. When the three sets of arc-shaped locking plates are engaged with the handle section of the corresponding eccentric cam rod, an overall locking area is formed. When the three sets of arc-shaped locking plates are disengaged from the handle section of the corresponding eccentric cam rod, a full-range adjustment area is formed. When one set of arc-shaped locking plates is disengaged from the handle section of the corresponding eccentric cam rod, a local control area is formed.

[0016] Beneficial effects

[0017] 1. This invention, by setting a first stepped groove to initially limit the busbar, and cooperating with the screw-driven connecting rod to drive the entire row of sliding blocks to move synchronously, allows all the round rods of the clamping blocks to be pulled out of the sleeve synchronously in a single-sided operation. This triggers the first spring to push the clamping blocks to automatically engage with the side of the busbar. At the same time, the first and second connecting rods, which are open when in the unlocking zone, cooperate with the tension spring to provide auxiliary support. This realizes a continuous action of synchronous spacing adjustment of the entire row, magnetic unlocking, automatic spring clamping, and connecting rod auxiliary force enhancement, which greatly reduces the point-by-point clamping operation of multi-phase busbars and improves assembly efficiency and clamping reliability.

[0018] 2. This invention, through the engagement or disengagement of the arc-shaped locking plate and the eccentric cam rod handle section, combined with the switchable linkage structure of the insertion slot of the central actuating rod and the insertion rods on both sides, allows the device to flexibly switch between the overall locking zone where all three sets of clamping frames are pressed, the full-range adjustment zone where all are disengaged, and the local control zone where only one set is disengaged. Moreover, the linkage structure can adapt to any working state, realizing the mechanical isolation of overall-local operation authority and the rapid conversion between independent-linkage mode. The maintenance and replacement of a single-phase busbar can be completed without power interruption or complete disassembly, significantly improving maintenance flexibility and operational safety.

[0019] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0021] Figure 1 A schematic diagram of the overall structure of a modular busbar quick-clamping and fixing structure for an integrated distribution box;

[0022] Figure 2 A partial overall structural diagram of a modular busbar quick-clamping and fixing structure for an integrated distribution box;

[0023] Figure 3 A partial structural diagram of a modular busbar quick-clamping and fixing structure for an integrated distribution box;

[0024] Figure 4 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 3 First-person sectional view of the structure;

[0025] Figure 5 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 6 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 3 Schematic diagram of the cross-sectional structure from a second perspective;

[0027] Figure 7 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 6 Enlarged structural diagram at point B;

[0028] Figure 8 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 3 Schematic diagram of the cross-sectional structure from a third-person perspective;

[0029] Figure 9 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 8 Enlarged structural diagram at point C;

[0030] Figure 10 A modular busbar quick-clamping and fixing structure for integrated distribution boxes Figure 8 Enlarged structural diagram at point D;

[0031] Figure 11 This is a partial cross-sectional schematic diagram of a modular busbar quick-clamping and fixing structure for an integrated distribution box.

[0032] The diagram shows the following components: 1. Distribution box body; 2. Components; 3. Base; 4. Rectangular groove; 5. Busbar; 6. First stepped groove; 7. Mounting base; 8. Vertical plate; 9. Sliding block; 10. Connecting frame; 11. Clamping frame; 12. First sliding groove; 13. Second sliding groove; 14. Clamping block; 15. First spring; 16. Second stepped groove; 17. Gasket; 18. Vent hole; 19. Round rod; 20. First magnetic block; 21. Arc groove; 22. Sleeve; 23. Second magnetic block; 24. Silicone plate; 25. First connecting rod; 26. Second connecting rod. 27. Tension spring; 28. Stand; 29. ​​Screw; 30. Third slide groove; 31. Actuating ring; 32. Moving block; 33. Connecting rod; 34. Bearing ring; 35. Magnetic buckle; 36. Rotating rod; 37. Magnetic protrusion; 38. Anti-slip ring; 39. Support base; 40. Groove; 41. Circular groove; 42. Circular hole; 43. T-shaped rod; 44. Second spring; 45. Eccentric cam rod; 46. Rectangular block; 47. Actuating rod; 48. Insertion groove; 49. Insertion rod; 50. Frame; 51. Arc-shaped slide groove; 52. Pull rod; 53. Arc-shaped clamping plate. Detailed Implementation

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] like Figure 1-11 As shown, a modular busbar quick-clamping and fixing structure for an integrated distribution box includes the distribution box body 1 and its supporting components 2.

[0038] It also includes: a base 3 symmetrically mounted on the distribution box body 1 by a bracket, and three sets of rectangular slots 4 are provided on the base 3 along the width direction of the distribution box body 1. At least three sets of first stepped slots 6 for placing busbars 5 are provided equidistantly in the three sets of rectangular slots 4.

[0039] Here, the height of each step of the first step groove 6 is adapted to the thickness of the busbar 5, so as to achieve multi-point support and lateral limitation of the bottom surface of the busbar 5, so that multiple sets of busbars 5 can fall into the preset position in an orderly and independent manner, preventing tilting or deviation during the initial assembly.

[0040] Furthermore, rectangular grooves 4 are arranged along the width of the distribution box body 1 and first stepped grooves 6 are set at equal intervals, so that the installation spacing of busbars 5 is consistent, which not only ensures the uniformity of electrical clearance, but also provides a unified positioning reference for subsequent lateral clamping, which is conducive to achieving rapid alignment.

[0041] Furthermore, the base 3 is symmetrically installed with brackets, which ensures the flatness and structural symmetry of the installation reference surface, so that the busbar 5 is subjected to balanced force when subjected to clamping force and electrodynamic force, and is not prone to deflection or concentrated stress.

[0042] Mounting bases 7 are symmetrically installed on the main body 1 of the distribution box. A vertical plate 8 is fixedly installed on the mounting base 7. Sliding blocks 9 are slidably provided on the mounting base 7 at the positions corresponding to the first stepped groove 6. The sliding blocks 9 are provided with fastening parts for engaging the busbar 5. The mounting base 7 is connected to the fastening parts through a driving part to form an adjustment area.

[0043] Here, the mounting base 7 and the upright plate 8 form a fixed base for lateral clamping. The sliding block 9 slides along the mounting base 7, allowing the fastener to move as a whole relative to the side of the busbar 5. The adjustment area realizes the stroke control of the clamping unit in the lateral direction.

[0044] Furthermore, the drive unit is linked with all the fastening parts, allowing the operator to simultaneously change the position of the entire row of fastening parts using a single drive source, avoiding the tedious process of adjusting each point individually and significantly improving clamping efficiency.

[0045] Furthermore, the sliding block 9 cooperates with the first sliding groove 12 on the mounting base 7 to provide a straight motion guide for the fastening parts, ensuring that the clamping block 14 is always perpendicular to the side of the busbar 5 during the movement and clamping process, with accurate clamping posture and no risk of skew or jamming.

[0046] The fastening component includes a first slide groove 12 formed on the mounting base 7, a sliding block 9 slidably connected in the first slide groove 12, a third slide groove 30 formed on the sliding block 9, a retaining block 14 provided on the sliding block 9, the bottom of the retaining block 14 slidably connected in the third slide groove 30, a first spring 15 provided in the third slide groove 30, the two ends of the first spring 15 being connected to the retaining block 14 and the inner wall of the third slide groove 30 respectively, and a second stepped groove 16 adapted to the side of the busbar 5 formed on the retaining block 14.

[0047] Here, the third slide groove 30 and the first spring 15 form a spring-force propulsion mechanism. When the round rod 19 of the abutment block 14 is released from locking, the rebound force of the first spring 15 immediately pushes the abutment block 14 along the third slide groove 30 toward the mother row 5, so that the second stepped groove 16 automatically engages with the side of the mother row 5, completing the instantaneous clamping.

[0048] Furthermore, the first spring 15 continuously provides clamping force in the clamped state, which can compensate for the small gaps in the busbar 5 caused by thermal expansion and contraction or vibration in real time, and ensure the stability of contact resistance during long-term operation.

[0049] Furthermore, the stepped profile of the second stepped groove 16 forms multi-line contact with the side of the busbar 5, increasing the effective friction surface and giving the lateral clamping anti-torsion and anti-slip capabilities, preventing the busbar 5 from shifting under the action of short-circuit electrodynamics.

[0050] The inner wall of the second stepped groove 16 is covered with a stabilizing pad 17. The pressing block 14 is provided with a vent hole 18 for heat dissipation. The vent hole 18 passes through the pressing block 14, the second stepped groove 16 and the pad 17 in sequence, and is arranged in a straight through manner. There are multiple vent holes 18, which are respectively opened at each step position of the second stepped groove 16.

[0051] Here, the gasket 17 undergoes elastic deformation when clamped, filling the microscopic unevenness on the surface of the busbar 5, increasing static friction, and effectively suppressing fretting wear and loosening caused by mechanical vibration.

[0052] Furthermore, the vent 18 is directly connected to the mating surface of the busbar 5, forming an unobstructed hot air dissipation channel. The heat generated by the busbar 5 during operation can be dissipated to the external environment through the shortest path, avoiding heat accumulation in the clamping area.

[0053] Furthermore, the vents 18 are distributed at each step of the second step groove 16, so that the heat dissipation airflow covers different height layers on the side of the busbar 5, which is coordinated with the natural convection direction, improves the heat dissipation uniformity, and plays a positive role in maintaining the current carrying capacity and insulation life of the busbar 5.

[0054] A round rod 19 is fixedly connected to the side of the clamping block 14 away from the second stepped groove 16. A first magnetic block 20 is embedded in the end of the round rod 19. An arc-shaped groove 21 is opened on the round rod 19. There are multiple arc-shaped grooves 21, which are equidistantly arranged along the length of the round rod 19. A sleeve 22 is fixedly connected to the vertical plate 8 at the position corresponding to the round rod 19. A second magnetic block 23 is fixedly connected to the bottom wall of the sleeve 22. A silicone plate 24 with the same number as the arc-shaped grooves 21 is fixedly installed on the inner wall of the sleeve 22. When the round rod 19 is inserted into the sleeve 22, the first magnetic block 20 and the second magnetic block 23 are magnetically attracted and positioned. The silicone plate 24 abuts against the inner wall of the arc-shaped groove 21 to form a positioning area. When the round rod 19 is pulled out of the sleeve 22, the first magnetic block 20 and the second magnetic block 23 are released from magnetic attraction. The silicone plate 24 is separated from the arc-shaped groove 21 to form an unlocking area.

[0055] Here, the round rod 19 and the sleeve 22 are attracted by the first magnetic block 20 and the second magnetic block 23, and the silicone plate 24 and the arc groove 21 are fitted together to form a double lock; under the positioning area, the round rod 19 cannot move axially or rotate circumferentially, and the abutment block 14 is reliably fixed in the position of the loosened busbar 5 to avoid malfunction.

[0056] Furthermore, after the silicone plate 24 is inserted into the arc groove 21, it provides additional resistance to withdrawal by relying on friction. Even if the magnetic attraction tends to weaken due to external vibration, it can still ensure that the round rod 19 does not come out on its own, which greatly improves the locking reliability.

[0057] Furthermore, in the unlocked area, the magnetic attraction and the silicone plate 24 disengage simultaneously, the round rod 19 returns to its free sliding state, and the clamping block 14 can immediately respond to the thrust of the first spring 15 to complete the clamping action. The switching process is seamless and meets the requirements for quick clamping and disassembly.

[0058] A support member is provided between the upright plate 8 and the abutment block 14. The support member includes a first connecting rod 25 and a second connecting rod 26. The adjacent ends of the first connecting rod 25 and the second connecting rod 26 are hinged together. The other ends of the first connecting rod 25 and the second connecting rod 26 are respectively hinged to the upright plate 8 and the abutment block 14. A tension spring 27 is provided between the first connecting rod 25 and the second connecting rod 26. The two ends of the tension spring 27 are respectively connected to the first connecting rod 25 and the second connecting rod 26. When in the unlocking zone, the first connecting rod 25 and the second connecting rod 26 open and the included angle between them increases. When in the positioning zone, the first connecting rod 25 and the second connecting rod 26 close together and the included angle between them decreases.

[0059] Here, in the unlocked area, i.e. the clamped state, the first link 25 and the second link 26 are opened at a large angle, the tension spring 27 is stretched, and its contraction force is decomposed into an additional horizontal component pointing towards the busbar 5 through the link, which is superimposed in the same direction as the thrust of the first spring 15, thereby enhancing the mechanical margin of clamping.

[0060] Furthermore, the first link 25 and the second link 26, together with the upright plate 8 and the clamping block 14, form a stable triangular support system, which can effectively resist the lateral reaction force from the busbar 5, prevent the clamping block 14 from moving backward under dynamic working conditions, and play an auxiliary role in increasing the clamping stiffness.

[0061] Furthermore, when unlocking is required, the first link 25 and the second link 26 can be manually retracted. The lever effect of the linkage mechanism can be used to easily overcome the magnetic attraction and the force of the first spring 15, and pull the clamping block 14 back to the position where the round rod 19 and the sleeve 22 are aligned. The operating force is significantly less than that of directly pushing and pulling the clamping block 14.

[0062] The driving component includes a stand 28 fixedly mounted on a corresponding mounting base 7. Both sets of stands 28 are rotatably connected to screws 29 via bearings. The screws 29 rotate in opposite directions. The mounting base 7 is provided with a third slide groove 30 that communicates with multiple sets of first slide grooves 12. A toggle ring 31 is fixedly connected to the end of the screw 29. A moving block 32 is threadedly connected to the screw 29. The end of the moving block 32 is slidably connected in the third slide groove 30. A connecting rod 33 is fixedly connected to the moving block 32. The end of the connecting rod 33 passes through each set of sliding blocks 9 in sequence and is connected to them. When the toggle ring 31 and the screw 29 are rotated, the moving block 32 and each set of sliding blocks 9 move closer to or further away from the busbar 5 along the path of the first slide groove 12 and the third slide groove 30.

[0063] Here, the screw 29 drives the moving block 32 to move linearly within the third slide groove 30, and transmits the motion synchronously to all sliding blocks 9 through the connecting rod 33, so that the entire row of clamping blocks 14 can be adjusted into place at once, greatly shortening the adjustment time.

[0064] Furthermore, the connecting rod 33 runs through all the sliding blocks 9 and is fixedly connected, ensuring that all the sliding blocks 9 always maintain the same plane and the same spacing during movement, completely eliminating the problem of asynchronous adjustment caused by the jamming of a single slider.

[0065] Furthermore, the two sets of screws 29 rotate in opposite directions. When adjusting the distance synchronously on both sides, simply rotating the rotating rod 36 in one direction will cause the two sides of the clamping blocks 14 to move symmetrically towards or away from each other. The operation logic is intuitive and not prone to errors.

[0066] Both sets of bases 3 are provided with bearing rings 34, and the bearing rings 34 are hinged to the corresponding bases 3 via extension rods. Both sets of actuating rings 31 are fixedly connected with magnetic buckles 35. A rotating rod 36 is provided between the two sets of actuating rings 31. The rotating rod 36 is rotatably connected inside the bearing rings 34. Both ends of the rotating rod 36 are fixedly connected with magnetic protrusions 37 that are adapted to the magnetic buckles 35. A non-slip ring 38 for easy rotation is fixedly installed in the middle of the rotating rod 36. When the magnetic protrusions 37 and the magnetic buckles 35 are magnetically attracted, the rotating rod 36 is coaxial with the two actuating rings 31 and forms a connection area. When in the connection area, rotating the non-slip ring 38 drives the rotating rod 36 to rotate, and the actuating rings 31 and screws 29 connected to it rotate accordingly.

[0067] Here, the rotating rod 36 can be flipped to the working position or retracted downwards via the hinged bearing ring 34. The magnetic protrusion 37 and the magnetic buckle 35 automatically complete the centering connection, eliminating the need for tools and precise alignment, and enabling rapid conversion of single-sided operation to double-sided synchronous linkage.

[0068] Furthermore, the magnetic connection allows for slight axial and angular fluctuations, and can reliably transmit torque even when there is a certain coaxiality deviation between the two actuating rings 31, thus avoiding the jamming and additional stress that may occur with rigid connections.

[0069] Furthermore, the anti-slip ring 38 is centrally located, allowing the operator to rotate it from one side of the distribution box body 1, simultaneously driving the screws 29 on both sides. This ensures that the movement of the clamping structure on both sides is strictly consistent, preventing the busbar 5 from tilting or being subjected to force on one side due to uneven adjustment.

[0070] A connecting frame 10 is symmetrically installed on the main body 1 of the distribution box. A clamping frame 11 is symmetrically arranged inside the main body 1 and on the busbar 5. The number of clamping frames 11 matches the number of rectangular slots 4. Adjacent clamping frames 11 are connected by connectors to form a splicing area. A control component is provided on the connecting frame 10 to drive the clamping frame 11 to move. When the three sets of clamping frames 11 are in contact with the busbar 5, the first working state is formed. When the three sets of clamping frames 11 are separated from the busbar 5, the second working state is formed. When one set of clamping frames 11 is separated from the busbar 5, the third working state is formed.

[0071] Here, the three sets of clamping brackets 11 correspond to the three-phase busbars 5 respectively. Each of them can independently perform clamping or disengaging actions through its own control components, which allows for the maintenance and replacement of a single set of busbars 5 without power interruption or complete disassembly, significantly improving maintenance flexibility.

[0072] Furthermore, the first working state provides reliable top clamping for all busbars 5, forming an orthogonal bidirectional fixation with the lateral clamping, which greatly improves the ability of busbars 5 to resist short-circuit electrodynamic forces; the second working state facilitates overall disassembly; and the third working state enables partial disconnection, with operations not interfering with each other.

[0073] Furthermore, the three operating states are switched entirely through a mechanical structure, without relying on an electrical control system. The status indication is intuitive, and operators can quickly determine the currently available operating permissions by observing the position of the arc-shaped card plate 53.

[0074] The control components include support seats 39 mounted on the corresponding connecting frame 10. There are three sets of support seats 39 on a single connecting frame 10. All three sets of support seats 39 are set at the position of the rectangular slot 4. The support seat 39 has a groove 40. The bottom wall of the groove 40 has a circular groove 41. The bottom wall of the circular groove 41 has a circular hole 42 coaxial with it. A T-shaped rod 43 is slidably connected in the circular hole 42. A second spring 44 is set in the circular groove 41. The two ends of the second spring 44 are respectively connected to the T-shaped rod 43 and the inner wall of the circular groove 41. An eccentric cam rod 45 is rotatably connected in the groove 40 through a rotating shaft. When the large diameter end of the eccentric cam rod 45 abuts against the T-shaped rod 43, the end of the T-shaped rod 43 extends out. When the small diameter end of the eccentric cam rod 45 abuts against the T-shaped rod 43, the end of the T-shaped rod 43 retracts.

[0075] Here, the eccentric cam rod 45 uses its variable diameter profile to convert the rotational motion of the handle into the linear extension and retraction of the T-shaped rod 43. The pushing stroke of the large diameter end is the pressing stroke of the clamping frame 11. The operating torque is small and the pressing force is large, which can achieve rapid pressing.

[0076] Furthermore, when the eccentric cam rod 45 rotates to the small diameter end, the second spring 44 automatically pushes the T-shaped rod 43 back, so that the clamping frame 11 and the mother row 5 can be reliably separated. The preload of the second spring 44 ensures that even if there is slight friction, the T-shaped rod 43 can be sensitively reset without jamming.

[0077] Furthermore, the circular groove 41 and circular hole 42 of the support base 39 provide full-length guidance for the T-shaped rod 43, ensuring that the clamping force is always perpendicular to the surface of the busbar 5, avoiding poor local contact caused by off-center load, while the groove 40 effectively protects the internal components.

[0078] The clamping frame 11 is connected to the end of the corresponding T-shaped rod 43. The connecting component includes a rectangular block 46 installed on the clamping frame 11 in the middle. A lever 47 is symmetrically hinged on the rectangular block 46. A insertion groove 48 is provided on the lever 47. Insertion rods 49 are installed on the clamping frames 11 on both sides of the clamping frame 11 in the middle. When the lever 47 is rotated along its hinge axis and the insertion groove 48 is engaged with the insertion rod 49, a joint area is formed.

[0079] Here, after the lever 47 flips, its insertion slot 48 engages with the two insertion rods 49, mechanically linking the three originally independent clamping frames 11 into one, thus achieving forced synchronization of movement.

[0080] Furthermore, in the combined state, the operator only needs to manipulate any set of control components or eccentric cam rod 45 to drive all the clamping frames 11 to press or release synchronously, which greatly simplifies the operation steps during the overall assembly and disassembly.

[0081] Furthermore, when a single unit needs to be inspected independently, the linkage can be quickly released by flipping the lever 47 in the opposite direction, and each clamping frame 11 can resume independent movement. Switching between linkage and independent modes does not require disassembling any parts, flexibly adapting to various operational needs.

[0082] A frame 50 is symmetrically installed inside the main body 1 of the distribution box. An arc-shaped slide groove 51 is provided on the frame 50 corresponding to the eccentric cam rod 45. A pull rod 52 is provided on the inner side of the frame 50. The end of the pull rod 52 slides with the corresponding arc-shaped slide groove 51. An arc-shaped locking plate 53 is hinged on the pull rod 52. When the three sets of arc-shaped locking plates 53 are engaged with the handle section of the corresponding eccentric cam rod 45, an overall locking area is formed. When the three sets of arc-shaped locking plates 53 are disengaged from the handle section of the corresponding eccentric cam rod 45, a full-range adjustment area is formed. When one set of arc-shaped locking plates 53 is disengaged from the handle section of the corresponding eccentric cam rod 45, a local control area is formed.

[0083] Here, the arc-shaped clamping plate 53 slides along the arc-shaped slide groove 51, and clamps the handle section of the eccentric cam rod 45 through its inner arc surface, circumferentially locking the eccentric cam rod 45 to prevent it from rotating accidentally due to vibration or accidental contact, ensuring that the clamping state is absolutely safe.

[0084] Furthermore, the overall locking zone fixes all eccentric cam rods 45, suitable for normal operation or transportation conditions; the full-range adjustment zone releases all eccentric cam rods 45, allowing for overall clamping or disassembly; the local control zone releases only the eccentric cam rods 45 corresponding to the busbar 5 to be inspected, while the rest remain locked, effectively isolating the maintenance area from the operating area.

[0085] Furthermore, the locking and switching logic is implemented by a purely mechanical structure, without relying on electrical signals. The operation is intuitive, and the operator only needs to observe the position of the arc-shaped card plate 53 to determine the current operating authority of the device, which reduces the risk of misoperation and meets the requirements of electrical safety specifications.

[0086] The working principle of this invention:

[0087] Initial placement and positioning of busbar 5: At the start of the assembly operation, the busbars 5 required for the main body of the distribution box 1 are placed in the rectangular groove 4 opened in the base 3 in sequence. The first stepped groove 6 arranged in the rectangular groove 4 is used to support the bottom of the busbars 5 and initially limit their position, thus completing the neat arrangement of all busbars 5 and laying the foundation for subsequent lateral clamping and top pressing operations.

[0088] A single-sided screw 29 drives the adjustment of the distance, and magnetic separation completes the lateral clamping: The operator can rotate the single-sided actuating ring 31 to drive the screw 29 installed on the upright 28 to rotate. The screw 29 drives the threaded moving block 32 to slide along the third slide groove 30 on the mounting base 7. The moving block 32 drives all the sliding blocks 9 to move together along the first slide groove 12 through the connecting rod 33. When the sliding block 9 moves, it drives the pressing block 14 to move synchronously, so that the round rod 19 on one side of the pressing block 14 is pulled out from the sleeve 22 on the upright plate 8. The first magnetic block 20 at the end of the round rod 19 separates from the second magnetic block 23 on the bottom wall of the sleeve 22, and the silicone plate 24 on the inner wall of the sleeve 22 also detaches. After the arc groove 21 on the surface of the round rod 19 is released from the locking restraint and the external locking structure is removed, the first spring 15 inside the third slide groove 30 of the sliding block 9 rebounds and pushes against the clamping block 14, causing the clamping block 14 to move closer to the side of the busbar 5. It relies on the second step groove 16 to fit and clamp the side of the busbar 5. The gasket 17 in the second step groove 16 increases the clamping friction. The ventilation holes 18 distributed at each step position and connected through can dissipate the heat generated by the busbar 5 when it is powered on. The first connecting rod 25 and the second connecting rod 26, which are hinged between the upright plate 8 and the clamping block 14, move synchronously with the tension spring 27. When the structure is in the unlocked area, the two sets of connecting rods open and the included angle increases, which plays an auxiliary support role.

[0089] Manually adjust the rod to reset the clamping block 14, and magnetically attach it into the positioning area: When the busbar 5 needs to be disassembled and repaired, the staff manually retracts the first connecting rod 25 and the second connecting rod 26 at the corresponding positions, reduces the angle between the rods, and uses the pulling force of the rods to pull the clamping block 14 to slide in the opposite direction along the third sliding groove 30, away from the busbar 5 until the round rod 19 is inserted into the sleeve 22 again. After the round rod 19 is inserted into place, the first magnetic block 20 and the second magnetic block 23 attract and position each other, and the silicone plate 24 on the inner wall of the sleeve 22 is inserted into the arc-shaped groove 21 that is evenly arranged on the round rod 19, enters the positioning area and fixes the position of the clamping block 14, thereby releasing the lateral clamping limit of the clamping block 14 on the busbar 5.

[0090] The rotating rod 36 magnetically engages to form a connection area, enabling synchronous adjustment of the distance between the two sides: When the two sets of screws 29 rotate in opposite directions and the distance between the two sides of the structure needs to be adjusted synchronously, the bearing ring 34 hinged to the base 3 is adjusted to a suitable position, the rotating rod 36 is rotated and assembled inside the bearing ring 34, and then the magnetic protrusions 37 at both ends of the rotating rod 36 are magnetically engaged with the magnetic buckles 35 on the two sides of the actuating ring 31, so that the rotating rod 36 and the two sides of the actuating ring 31 are kept coaxial and form a connection area. Rotating the anti-slip ring 38 in the middle of the rotating rod 36 can drive the rotating rod 36 to rotate, synchronously driving the two sides of the actuating ring 31 and the screw 29 to rotate together, completing the synchronous adjustment of the distance between the two sides of the clamping structure.

[0091] The clamping plate limit and cam structure realize the clamping and loosening of the clamping frame 11: The frame 50 inside the distribution box body 1 has an arc-shaped slide groove 51. The pull rod 52 slides along the arc-shaped slide groove 51, which can drive the arc-shaped clamping plate 53 to move. The arc-shaped clamping plate 53 can engage or disengage from the handle section of the eccentric cam rod 45, thereby restricting or releasing the rotational freedom of the eccentric cam rod 45. When the eccentric cam rod 45 is rotated, when its large diameter end presses against the T-shaped rod 43, the T-shaped rod 43 overcomes the elastic force of the second spring 44 inside the circular groove 41 and extends outward, driving the clamping frame 11 to fit and press against the busbar 5. When the eccentric cam rod 45 rotates to the small diameter end and fits against the T-shaped rod 43, the second spring 44 rebounds and drives the T-shaped rod 43 to retract, and the clamping frame 11 separates from the busbar 5.

[0092] Based on the engagement state of the clamping plates, three basic working states can be switched: the operator can switch the corresponding working state of the device by changing the engagement relationship between the arc-shaped clamping plate 53 and the eccentric cam rod 45. When all three sets of arc-shaped clamping plates 53 are engaged with the handle section of the eccentric cam rod 45, all eccentric cam rods 45 are limited and fixed, and the three sets of clamping frames 11 stably fit and press against the mother row 5, forming the first working state. When all three sets of arc-shaped clamping plates 53 are disengaged from the eccentric cam rod 45, all eccentric cam rods 45 can rotate freely, and all clamping frames 11 can be controlled to separate from the mother row 5 at the same time, forming the second working state. When only one set of arc-shaped clamping plates 53 is disengaged from the eccentric cam rod 45, and the others remain engaged and limited, only the corresponding position clamping frame 11 can be individually adjusted to disengage from the mother row 5, while the other clamping frames 11 remain pressed, forming the third working state.

[0093] A linkage structure is established to adapt to various working states: During the operation of the above three working states, the staff can activate the connecting structure according to the usage requirements, flip the lever 47 hinged to the rectangular block 46 on the central clamping frame 11, so that the insertion groove 48 on the surface of the lever 47 and the insertion rod 49 on the side clamping frame 11 cooperate to form a linkage area, connecting multiple independent clamping frames 11 into one. This linkage structure can adapt to any working state, and can realize the synchronous action of all clamping frames 11 during overall control, and can also keep the linkage structure stationary during local control, further improving the flexibility of busbar 5 clamping and maintenance operations.

[0094] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A modular busbar quick-clamping and fixing structure for an integrated distribution box, comprising the distribution box body (1) and its supporting components (2), characterized in that: Also includes: The base (3) is symmetrically installed on the main body (1) of the distribution box via a bracket. Three sets of rectangular slots (4) are provided on the base (3) along the width direction of the main body (1) of the distribution box. At least three sets of first stepped slots (6) for placing busbars (5) are provided in the three sets of rectangular slots (4) at equal intervals. A mounting base (7) is symmetrically installed on the main body (1) of the distribution box. A vertical plate (8) is fixedly installed on the mounting base (7). A sliding block (9) is slidably provided on the mounting base (7) at the position corresponding to the first step groove (6). A fastening component for snapping the busbar (5) is provided on the sliding block (9). The mounting base (7) is connected to the fastening component through a driving component to form an adjustment area. A connecting frame (10) is symmetrically installed on the main body (1) of the distribution box. A clamping frame (11) is symmetrically arranged inside the main body (1) and on the busbar (5). The number of clamping frames (11) matches the number of rectangular slots (4). Adjacent clamping frames (11) are connected by connectors to form a splicing area. A control component for moving the clamping frame (11) is provided on the connecting frame (10). When the three sets of clamping frames (11) are in contact with the busbar (5), a first working state is formed. When the three sets of clamping frames (11) are separated from the busbar (5), a second working state is formed. When one set of clamping frames (11) is separated from the busbar (5), a third working state is formed.

2. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 1, characterized in that: The fastening component includes a first slide groove (12) opened on the mounting base (7), the sliding block (9) is slidably connected in the first slide groove (12), the sliding block (9) is provided with a second slide groove (13), the sliding block (9) is provided with a pressing block (14), the bottom of the pressing block (14) is slidably connected in the second slide groove (13), the second slide groove (13) is provided with a first spring (15), the two ends of the first spring (15) are respectively connected to the inner wall of the pressing block (14) and the second slide groove (13), and the pressing block (14) is provided with a second stepped groove (16) adapted to the side of the busbar (5).

3. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 2, characterized in that: The inner wall of the second stepped groove (16) is covered with a stabilizing pad (17). The abutting block (14) is provided with a vent hole (18) for heat dissipation. The vent hole (18) passes through the abutting block, the second stepped groove (16) and the pad (17) in sequence, and is arranged in a straight through manner. There are multiple vent holes (18), and the multiple vent holes (18) are respectively opened at each step position of the second stepped groove (16).

4. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 3, characterized in that: A round rod (19) is fixedly connected to the side of the clamping block (14) away from the second stepped groove (16). A first magnetic block (20) is embedded in the end of the round rod (19). An arc-shaped groove (21) is opened on the round rod (19). There are multiple arc-shaped grooves (21) and they are equidistantly arranged along the length of the round rod (19). A sleeve (22) is fixedly connected to the upright plate (8) at the position corresponding to the round rod (19). A second magnetic block is fixedly connected to the bottom wall of the sleeve (22). (23) The inner wall of the sleeve (22) is fixedly equipped with silicone plates (24) in the same number as the arc groove (21). When the round rod (19) is inserted into the sleeve (22), the first magnetic block (20) and the second magnetic block (23) are magnetically attracted and positioned. The silicone plates (24) abut against the inner wall of the arc groove (21) to form a positioning area. When the round rod (19) is pulled out of the sleeve (22), the first magnetic block (20) and the second magnetic block (23) are released from magnetic attraction. The silicone plates (24) are separated from the arc groove (21) to form an unlocking area.

5. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 4, characterized in that: A support member is provided between the upright plate (8) and the abutment block (14). The support member includes a first connecting rod (25) and a second connecting rod (26). The adjacent ends of the first connecting rod (25) and the second connecting rod (26) are hinged together. The other ends of the first connecting rod (25) and the second connecting rod (26) are respectively hinged to the upright plate (8) and the abutment block (14). A tension spring (27) is provided between the first connecting rod (25) and the second connecting rod (26). The two ends of the tension spring (27) are respectively connected to the first connecting rod (25) and the second connecting rod (26). When in the unlocking area, the first connecting rod (25) and the second connecting rod (26) open and the included angle between them increases. When in the positioning area, the first connecting rod (25) and the second connecting rod (26) close together and the included angle between them decreases.

6. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 5, characterized in that: The driving component includes a stand (28) fixedly mounted on a corresponding mounting base (7). Both sets of the stand (28) are rotatably connected to a screw (29) via bearings. The screws (29) rotate in opposite directions. The mounting base (7) is provided with a third slide groove (30) that communicates with multiple sets of first slide grooves (12). The end of the screw (29) is fixedly connected to a toggle ring (31). A moving block (32) is threaded onto the screw (29). The end of the moving block (32) is slidably connected in the third slide groove (30). A connecting rod (33) is fixedly connected to the moving block (32). The end of the connecting rod (33) passes through each set of sliding blocks (9) in sequence and is connected to them. When the toggle ring (31) and the screw (29) are rotated, the moving block (32) and each set of sliding blocks (9) move closer to or further away from the busbar (5) along the path of the first slide groove (12) and the third slide groove (30).

7. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 6, characterized in that: Both sets of bases (3) are provided with bearing rings (34), and the bearing rings (34) are hinged to the corresponding bases (3) via extension rods. Both sets of actuating rings (31) are fixedly connected with magnetic buckles (35). A rotating rod (36) is provided between the two sets of actuating rings (31). The rotating rod (36) is rotatably connected inside the bearing rings (34). Both ends of the rotating rod (36) are fixedly connected with magnetic protrusions (37) adapted to the magnetic buckles (35). A non-slip ring (38) for easy rotation is fixedly installed in the middle of the rotating rod (36). When the magnetic protrusions (37) and the magnetic buckles (35) are magnetically attracted, the rotating rod (36) is coaxial with the actuating rings (31) on both sides and forms a connection area. When in the connection area, rotating the non-slip ring (38) drives the rotating rod (36) to rotate, and the actuating rings (31) and screws (29) connected to it rotate accordingly.

8. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 7, characterized in that: The control component includes a support base (39) mounted on a corresponding connecting frame (10). Each connecting frame (10) has three sets of support bases (39). All three sets of support bases (39) are positioned corresponding to the rectangular groove (4). Each support base (39) has a groove (40). The bottom wall of the groove (40) has a circular groove (41). The bottom wall of the circular groove (41) has a circular hole (42) coaxial with it. A T-shaped rod is slidably connected within the circular hole (42). 43), a second spring (44) is provided in the circular groove (41). The two ends of the second spring (44) are respectively connected to the T-shaped rod (43) and the inner wall of the circular groove (41). An eccentric cam rod (45) is rotatably connected in the groove (40) through a rotating shaft. When the large diameter end of the eccentric cam rod (45) abuts against the T-shaped rod (43), the end of the T-shaped rod (43) extends out. When the small diameter end of the eccentric cam rod (45) abuts against the T-shaped rod (43), the end of the T-shaped rod (43) retracts.

9. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 8, characterized in that: The clamping frame (11) is connected to the end of the corresponding T-shaped rod (43). The connector includes a rectangular block (46) installed on the clamping frame (11) in the middle. A lever (47) is symmetrically hinged on the rectangular block (46). A slot (48) is provided on the lever (47). A slot (49) is installed on the clamping frames (11) on both sides of the clamping frame (11) in the middle. When the lever (47) is rotated along its hinge axis and the slot (48) and the slot (49) are engaged, a joint area is formed.

10. The modular busbar quick-clamping and fixing structure for an integrated distribution box according to claim 9, characterized in that: The distribution box body (1) is symmetrically equipped with a frame (50). The frame (50) is provided with an arc-shaped groove (51) corresponding to the eccentric cam rod (45). The inner side of the frame (50) is provided with a pull rod (52). The end of the pull rod (52) slides with the corresponding arc-shaped groove (51). An arc-shaped locking plate (53) is hinged on the pull rod (52). When the three sets of arc-shaped locking plates (53) are engaged with the handle section of the corresponding eccentric cam rod (45), an overall locking area is formed. When the three sets of arc-shaped locking plates (53) are disengaged from the handle section of the corresponding eccentric cam rod (45), a full-range adjustment area is formed. When one set of arc-shaped locking plates (53) is disengaged from the handle section of the corresponding eccentric cam rod (45), a local control area is formed.

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