A high protection level busbar branch plug-in device

Abstract

The present invention provides a high-protection-level busbar branch plug-in device, which relates to the technical field of bus ducts. The high-protection-level busbar branch plug-in device comprises a bus duct body and a plug-in box. During assembly, the second insulator is used to push the sliding cover to the left and then insert it into the installation box, and then move to the right until the second conductive block contacts the first conductive block to complete the assembly. This connection method makes it difficult for the connection to be displaced, and the surface-to-surface contact method is very reliable for conduction. Multiple groups of second insulators can be synchronously inserted into the corresponding installation boxes through the guidance of a guide structure, which effectively improves the installation efficiency. After assembly, the connection box and the plug-in box are fixed by the connection between the second insulator and the installation box, and no additional fixing action is required. The two groups of baffles can be respectively blocked at the left and right ends of the connection box, so that there is no relative movement between the plug-in box and the connection box, which effectively improves the stability of the connection.

Description

Technical Field

[0001] The invention relates to the technical field of bus ducts, and in particular to a bus branch plug-in device with a high protection level. Background Art

[0002] The bus duct is cast with high-performance insulating resin and a variety of inorganic minerals. The busbar is directly cast and sealed, and the protection level can reach IP68. The bus duct has four protection functions such as efficient waterproof, fireproof, anti-corrosion and explosion-proof. In the power supply line, the lead-out power branch is a common form of power consumption in the bus duct. At present, there are many busbar plug-in methods in the market, especially the current branch end of 250A and below is more common. Its lead-out method is mainly in the form of clip plug-in and pull-out. During on-site installation, the plug-in type pins are very likely to be out of sync and the clamping degree is uneven; the characteristic of the clip is linear contact, which leads to the connection of each branch end during plug-in installation. Whether it is reliable, and easy to detach, for this reason, there is a public technology on the market that proposes a plug-in box for the bus duct, the plug-in box of the bus duct includes a conductor branch end, which is led out from the bus duct; a connecting seat, one end of the connecting seat is connected to the conductor branch end, and the other end of the connecting seat is provided with a mounting position; a connector, the connector is provided with a port for connecting the device connection line, and the connector is provided with a mounting portion adapted to the mounting position. The connector is fixedly connected to the mounting position by the mounting portion and is detachably connected to the connecting seat. By arranging independently designed connection sockets and connectors on the branch ends of the lead-out conductors, connecting the connecting lines of the equipment through the ports of the connectors, and cooperating with the connection sockets to ensure convenient installation and reliable connection. The multiple connectors and the connection sockets in the disclosed technology need to be plugged in and installed separately, which only changes the traditional clip plug-in form into a plug form. The actual improvement is not significant. The plug-in form connection still has the risk of detachment, and the plug-in box and the bus duct need to be fixed separately.

[0003] Therefore, it is necessary to optimize and improve the structure of busbar branch plug-in devices with high protection levels. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-protection-level busbar branch plug-in device, which solves the problem that the plug-in connection of the high-protection-level busbar branch plug-in device in the prior art has the risk of disconnection and the need for a separate connection between the plug-in box and the bus duct.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-protection-level busbar branch plug-in device, comprising a busbar trough body and a plug-in box, the busbar trough body consisting of a busbar trough shell and a plurality of groups of conductive bars cast inside the busbar trough shell, a connection box fixedly connected to the top of the busbar trough shell, a plurality of groups of plug-in ports arranged on the upper wall of the connection box, an installation box fixedly connected to the inner upper wall of the connection box and located below the plug-in ports, the inner side cross-section of the installation box presents an inverted cone shape with a larger upper portion and a smaller lower portion, a sliding cover for covering the plug-in port is arranged between the installation box and the upper wall of the connection box, and the inner wall of the installation box is fixed A first insulator is connected, two groups of protrusions are fixedly connected to the left and right side walls of the plug-in box, a baffle is slidably connected between two groups located on the same side of the four groups of protrusions through a sliding structure, a magnetic attraction structure for magnetic fixation is arranged between the baffle and the opposite side of the plug-in box, a guide structure for positioning and guiding during assembly is arranged between the opposite sides of the plug-in box and the connection box, multiple groups of second insulators are fixedly connected to the lower wall of the plug-in box, and when the plug-in box and the connection box are aligned up and down, the multiple groups of second insulators are respectively aligned up and down with a group of installation boxes, and a conductive structure for connecting electricity is arranged between the second insulator and the first insulator.

[0006] Preferably, the sliding cover passes through the left wall of the installation box and is slidably connected thereto, and a toggle block is fixedly connected to the upper wall of one end of the sliding cover that extends into the interior of the installation box, and the end of the toggle block away from the sliding cover passes through the plug interface and extends to the upper side of the connection box, and an elastic structure for squeezing the sliding cover to the right to cover the plug interface is provided between the end of the sliding cover that extends to the left side of the installation box and the plug interface.

[0007] Preferably, the first insulator is located near the upper wall and the right wall of the installation box, the height of the first insulator is half of the depth of the installation box and the left-right width of the first insulator is half of the left-right width of the inner wall of the installation box, the second insulator consists of a vertical block and a horizontal block and its front view projection is L-shaped, the vertical block is fixedly connected to the lower wall of the plug-in box, the horizontal block is fixedly connected to the end of the vertical block away from the plug-in box and the horizontal block extends toward the right side of the vertical block, the left-right width of the horizontal block is smaller than the distance from the inner left wall of the installation box to the left wall of the first insulator, the side view cross-sectional shape of the horizontal block is consistent with the side view cross-sectional shape of the installation box, and when the lower wall of the horizontal block abuts against the inner lower wall of the installation box, the horizontal height of the upper wall of the horizontal block is lower than the horizontal height of the lower wall of the first insulator.

[0008] Preferably, the sliding structure includes two groups of sliding grooves and two groups of sliding bars, the two groups of sliding bars are respectively arranged on the front and rear sides of the baffle, the two groups of sliding grooves are respectively arranged between two groups of protrusions located on the same side of the plug-in box, the two groups of sliding bars are respectively slidably connected to the inner side walls of one group of sliding grooves, and the baffle is slidably connected to the protrusions through the sliding bars, the sliding grooves and the protrusions.

[0009] Preferably, the magnetic attraction structure includes a first magnet and a second magnet, and the first magnet and the second magnet are respectively fixedly connected between the baffle and the opposite side of the plug-in box and the first magnet and the second magnet are aligned left and right when the lower wall of the baffle is aligned at a horizontal height with the lower wall of the plug-in box.

[0010] Preferably, the guide structure includes four groups of guide wheels and four groups of guide grooves, the four groups of guide grooves are all arranged on the upper wall of the connection box and are respectively close to the four corners of the upper wall of the connection box, the four groups of guide wheels are all rotatably connected to the lower wall of the plug-in box and are respectively opposite to a group of guide grooves up and down, the axis centerline of the guide wheel is perpendicular to the length direction of the plug-in box in a top view, and the length direction of the guide groove is parallel to the length direction of the connection box.

[0011] The cam is an angular channel formed between a circle which is parallel to the top of the linking groove and a circle which is parallel to the top of the linking groove. The cam is secured to the bottom of the linking groove and is adapted to move upwardly and downwardly to move the linking groove toward the guide rail.

[0012] Preferably, the conductive structure includes a first conductive block and a second conductive block, the first conductive block is fixedly connected to the lower wall of the first insulator and the lower surface of the first conductive block protrudes from the lower wall of the first insulator, the second conductive block is fixedly connected to the upper wall of the horizontal block of the second insulator and is located on the right side of the vertical block, the upper wall of the second conductive block protrudes from the upper wall of the horizontal block of the second insulator, and when the lower wall of the second insulator abuts against the inner lower wall of the installation box, the upper wall of the second conductive block is at the same horizontal height as the first conductive block.

[0013] Preferably, the elastic structure includes a sliding rod, a first spring and a sliding seat, the sliding seat is fixedly connected to the inner upper wall of the connecting box and is located on the left side of the installation box, the sliding rod is fixedly connected to the end of the sliding cover extending to the left side of the installation box, the end of the sliding rod away from the sliding cover passes through the inner wall of the sliding seat and is slidably connected thereto, and the first spring is sleeved on the outer wall of the sliding rod and is located between the sliding seat and the sliding cover.

[0014] Preferably, the width between the opposite sides of the two groups of baffles is adapted to the left-right width of the connection box, and the opposite sides of the two groups of baffles are both provided with hand-grips for facilitating the lifting of the baffles.

[0015] The present invention provides a busbar branch plug-in device with a high protection level. It has the following beneficial effects:

[0016] Compared with the prior art, the high protection grade busbar branch plug-in device, when assembled, is inserted into the installation box after the sliding cover is pushed to the left by the second insulator, and then moved to the right until the second conductive block contacts the first conductive block to complete the assembly. This connection method makes it difficult for the connection to be displaced, and the surface-to-surface contact method is very reliable for conduction. Multiple groups of second insulators can be synchronously inserted into the corresponding installation boxes through the guidance of the guide structure, which effectively improves the installation efficiency.

[0017] Compared with the prior art, after assembly, the high protection level busbar branch plug-in device fixes the connection box and the plug-in box through the connection between the second insulator and the installation box, without the need for additional fixing action, and the two sets of baffles can be respectively blocked at the left and right ends of the connection box, so that there is no relative movement between the plug-in box and the connection box, which effectively improves the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 This is a schematic diagram of the connection structure of the baffle and the second magnet of the present invention;

[0021] Figure 4 It is a partial schematic diagram of the top surface of the upper wall structure of the connection box of the present invention;

[0022] Figure 5 It is a partial cross-sectional view of the connection structure of the installation box and the connection box of the present invention;

[0023] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0024] Figure 7 It is a partial side cross-sectional view of the connection structure of the installation box and the connection box of the present invention;

[0025] Figure 8 It is a schematic diagram of the lower wall structure of the plug-in box of the present invention from above;

[0026] Fig. 9 For the present invention Figure 8 A partial enlarged view of point C in the middle;

[0027] Fig.10 It is a partial cross-sectional view of the connection structure of the fixed sleeve, the sliding sleeve, the connecting seat and the guide wheel of the present invention;

[0028] Fig.11 It is a partial cross-sectional view of the connection structure of the plug-in box, the second insulator and the second conductive block of the present invention;

[0029] Fig.12 It is a partial cross-sectional view of the connection structure of the second insulator of the present invention after it is inserted into the installation box and docked with the first insulator.

[0030] Among them, 1. bus duct shell; 2. connection box; 201. plug interface; 3. plug box; 301. protrusion; 3011. slide groove; 4. baffle; 401. buckle groove; 402. slide bar; 5. first magnet; 6. second magnet; 7. slide cover; 701. toggle block; 8. installation box; 9. first insulator; 10. first conductive block; 11. sliding seat; 12. slide rod; 13. first spring; 14. guide groove; 15. second insulator; 16. fixing sleeve; 17. slide rod; 18. connection seat; 19. guide wheel; 20. second conductive block; 21. second spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figures 1 to 12 As shown, an embodiment of the present invention provides a high-protection-level busbar branch plug-in device, including a busbar trough body and a plug-in box 3, the busbar trough body is composed of a busbar trough shell 1 and a plurality of conductive bars cast inside the busbar trough shell 1, a connection box 2 is fixedly connected to the top of the busbar trough shell 1, a plurality of plug-in ports 201 are arranged on the upper wall of the connection box 2, an installation box 8 is fixedly connected to the inner upper wall of the connection box 2 and below the plug-in ports 201, and the inner side cross-section of the installation box 8 is an inverted cone with a larger upper portion and a smaller lower portion. In this embodiment, the electrical connection method between the connection box 2 and the conductive bar and the electrical connection method between the plug-in box 3 and the electrical equipment are consistent with the prior art, and the key improvement part of this embodiment is the electrical connection method between the plug-in box 3 and the connection box 2. Through the technical solution proposed in this embodiment, the plug-in box 3 is connected to the connection box 2 and both fixed and electrically connected are achieved, and the connection is very reliable;

[0033] In order to shield and protect the interior of the installation box 8 when not in use, a sliding cover 7 for covering the plug interface 201 is provided between the installation box 8 and the upper wall of the connection box 2. The sliding cover 7 penetrates the left wall of the installation box 8 and is slidably connected thereto. A toggle block 701 is fixedly connected to the upper wall of one end of the sliding cover 7 extending into the interior of the installation box 8. The end of the toggle block 701 away from the sliding cover 7 penetrates the plug interface 201 and extends to the upper side of the connection box 2. An elastic structure for squeezing the sliding cover 7 to the right to cover the plug interface 201 is provided between the end of the sliding cover 7 extending to the left side of the installation box 8 and the plug interface 201. The elastic structure includes a sliding rod 12, a first spring 13 and a sliding seat 11. The sliding seat 11 is fixedly connected to the connection box 2 inner upper wall and located on the left side of the installation box 8, the slide bar 12 is fixedly connected to the end of the slide cover 7 extending to the left side of the installation box 8, the end of the slide bar 12 away from the slide cover 7 passes through the inner wall of the sliding seat 11 and is slidably connected thereto, the first spring 13 is sleeved on the outer wall of the slide bar 12 and is located between the sliding seat 11 and the slide cover 7, when the slide cover 7 is not subjected to external force, the right end of the slide cover 7 abuts against the inner right wall of the installation box 8 through the compression of the first spring 13, completely covering the installation box 8, and effectively preventing foreign matter from entering the interior of the installation box 8 when not in use, and when installing, the second insulator 15 is moved to the left to push the toggle block 701, thereby driving the slide cover 7 to open, so that the second insulator 15 can enter the interior of the installation box 8;

[0034] In order to achieve conductivity, the inner wall of the installation box 8 is fixedly connected to the first insulator 9, and the lower wall of the plug-in box 3 is fixedly connected to multiple groups of second insulators 15. When the plug-in box 3 is aligned with the connection box 2 up and down, the multiple groups of second insulators 15 are respectively aligned up and down with a group of installation boxes 8. A conductive structure for connecting electricity is provided between the second insulator 15 and the first insulator 9. The conductive structure includes a first conductive block 10 and a second conductive block 20. The first conductive block 10 is fixedly connected to the lower wall of the first insulator 9 and the lower surface of the first conductive block 10 protrudes from the lower wall of the first insulator 9. The second conductive block 20 is fixedly connected to the upper wall of the horizontal block of the second insulator 15 and is located on the right side of the vertical block. The second conductive block 20 is fixedly connected to the upper wall of the horizontal block of the second insulator 15 and is located on the right side of the vertical block. 0, the upper wall protrudes from the upper wall of the second insulator 15 horizontal block, and when the lower wall of the second insulator 15 abuts against the lower wall of the inner side of the installation box 8, the upper wall of the second conductive block 20 is at the same level as the first conductive block 10. After the second insulator 15 is inserted into the installation box 8, it moves to the right, so that the right end of the horizontal block is inserted between the first insulator 9 and the lower wall of the inner side of the installation box 8, so that the second conductive block 20 is in contact with the first conductive block 10, the second conductive block 20 is electrically connected to the inside of the plug-in box 3, and the first conductive block 10 is electrically connected to the inside of the connection box 2. When the first conductive block 10 abuts against the second conductive block 20, the electrical connection between the connection box 2 and the plug-in box 3 is achieved;

[0035] In order to prevent the plug-in box 3 and the connection box 2 from being displaced left and right after installation, two groups of protrusions 301 are fixedly connected to the left and right side walls of the plug-in box 3. A baffle 4 is slidably connected between the two groups of protrusions 301 on the same side through a sliding structure. The width between the opposite sides of the two groups of baffles 4 is adapted to the left and right width of the connection box 2. The two groups of baffles 4 are provided with a hand-grip groove 401 on the opposite sides for facilitating the lifting of the baffle 4. The sliding structure includes two groups of slide grooves 3011 and two groups of slide bars 402. The two groups of slide bars 402 are respectively arranged on the front and rear sides of the baffle 4. The two groups of protrusions 301 on the same side of the plug-in box 3 are placed opposite each other, and the two groups of slide bars 402 are respectively slidably connected with the inner side walls of a group of slide grooves 3011. The baffle plate 4 is slidably connected with the protrusion 301 through the slide bars 402 and the slide grooves 3011. After the plug-in box 3 and the connection box 2 are installed, the baffle plate 4 is pushed downward from the position flush with the plug-in box 3. The two groups of baffle plates 4 are clamped at the left and right ends of the connection box 2 and the left and right ends of the plug-in box 3, so that the connection box 2 and the plug-in box 3 will no longer move in the left and right direction, thereby ensuring that the second conductive block 20 will not be separated from the first conductive block 10 during use;

[0036] In order to prevent the baffle 4 from accidentally falling during the assembly process, a magnetic attraction structure for magnetic fixation is provided between the baffle 4 and the opposite side of the plug-in box 3, and the magnetic attraction structure includes a first magnet 5 and a second magnet 6, which are respectively fixedly connected between the baffle 4 and the opposite side of the plug-in box 3 and the first magnet 5 and the second magnet 6 are aligned left and right when the lower wall of the baffle 4 is aligned with the lower wall of the plug-in box 3 in horizontal height. During assembly, in order to avoid the inconvenience of assembly caused by the falling of the baffle 4, the baffle 4 can be lifted up through the buckle groove 401 until the slide bar 402 contacts the inner upper wall of the slide groove 3011, at which time the lower end of the baffle 4 is flush with the lower wall of the plug-in box 3, which will not affect the assembly, and the baffle 4 is fixed by the mutual adsorption of the first magnet 5 and the second magnet 6 and will not fall by itself;

[0037] In order to facilitate the alignment of each second insulator 15 and the corresponding installation box 8 during assembly, a guide structure for positioning and guiding during assembly is provided between the opposite sides of the plug-in box 3 and the connection box 2, and the guide structure includes four groups of guide wheels 19 and four groups of guide grooves 14, and the four groups of guide grooves 14 are all provided on the upper wall of the connection box 2 and are respectively close to the four corners of the upper wall of the connection box 2, and the four groups of guide wheels 19 are all rotatably connected to the lower wall of the plug-in box 3 and are respectively opposite to a group of guide grooves 14 up and down, and the axis of the guide wheel 19 is perpendicular to the length direction of the plug-in box 3 in a top view projection, and the length direction of the guide groove 14 is parallel to the length direction of the connection box 2, and the lower wall of the plug-in box 3 and the four groups of guide grooves 14 are fixedly connected with a fixed sleeve 16, and the inner wall of the fixed sleeve 16 is slidably connected with a sliding rod 1 7. A limit ring is arranged on the outer wall of the sliding rod 17 and near the upper end. The outer wall of the limit ring is slidably connected with the inner wall of the fixing sleeve 16. The sliding rod 17 is rectangular when viewed from above. A second spring 21 is arranged between the upper wall of the sliding rod 17 and the inner upper wall of the fixing sleeve 16. The lower end of the sliding rod 17 passes through the lower wall of the fixing sleeve 16 and extends below the fixing sleeve 16. The end of the sliding rod 17 extending below the fixing sleeve 16 is fixedly connected with a connecting seat 18. The guide wheel 19 is rotatably connected to the end of the connecting seat 18 away from the sliding rod 17. The end of the guide wheel 19 away from the connecting seat 18 is rollingly connected with the inner wall of the guide groove 14. When the guide wheel 19 contacts the inner right wall of the guide groove 14, the end of the second insulator 15 away from the plug-in box 3 abuts against the upper wall of the connecting box 2 and the second insulator 15 is located on the right side of the corresponding toggle block 701, the first insulator 9 is located near the upper wall and the right wall of the installation box 8, the height of the first insulator 9 is half of the depth of the installation box 8 and the left-right width of the first insulator 9 is half of the left-right width of the inner wall of the installation box 8, the second insulator 15 is composed of a vertical block and a horizontal block and the front view projection is L-shaped, the vertical block is fixedly connected to the lower wall of the plug-in box 3, the horizontal block is fixedly connected to the end of the vertical block away from the plug-in box 3 and the horizontal block extends toward the right side of the vertical block, the left-right width of the horizontal block is less than the distance from the inner left wall of the installation box 8 to the left wall of the first insulator 9, the side view cross-sectional shape of the horizontal block is consistent with the side view cross-sectional shape of the installation box 8, and when the lower wall of the horizontal block abuts against the inner lower wall of the installation box 8, the horizontal height of the upper wall of the horizontal block is lower than the water level of the lower wall of the first insulator 9. When assembling, the four sets of guide wheels 19 are placed in the four sets of guide grooves 14 to align the front-to-back directions of the connection box 2 and the plug-in box 3, and the guide wheels 19 are kept as close to the right side of the guide grooves 14 as possible. At this time, the lower wall of the second insulator 15 is in contact with the upper wall of the connection box 2. Hold the plug-in box 3 with both hands to keep the second insulator 15 in contact with the upper wall of the connection box 2, and then push it to the left. The second insulator 15 contacts the toggle block 701 to push open the sliding cover 7 until the toggle block 701 is blocked by the inner left wall of the plug interface 201. At this time, the sliding cover 7 has been opened, and the second insulator 15 is located above the opening of the installation box 8. Then press the plug-in box 3 downward until the lower wall of the second insulator 15 abuts against the inner lower wall of the installation box 8, and then push the plug-in box 3 to the right.Drive the horizontal block to be inserted between the lower wall of the first insulator 9 and the lower inner wall of the installation box 8 until it can no longer be pushed. At this time, the assembly is completed. Push the two sets of baffles 4 downward and clamp them on the left and right ends of the connection box 2 to complete the fixation. When the plug-in box 3 is pressed downward, the sliding rod 17 can extend into the fixing sleeve 16 without causing interference.

[0038] Working principle: In this embodiment, the electrical connection method between the connection box 2 and the conductive bar and the electrical connection method between the plug-in box 3 and the electrical equipment are consistent with the prior art. The key improvement part of this embodiment is the electrical connection method between the plug-in box 3 and the connection box 2. Through the technical solution proposed in this embodiment, the plug-in box 3 is connected to the connection box 2 and fixed and electrically connected at the same time, and the connection is very reliable; when the sliding cover 7 is not subjected to external force, the right end of the sliding cover 7 abuts against the inner right wall of the installation box 8 through the compression of the first spring 13, completely covering the installation box 8, and effectively preventing foreign matter from entering the interior of the installation box 8 when not in use. During installation, the second insulator 15 is moved to the left to push the toggle block 701, thereby driving the sliding cover 7 to open, so that the second insulator 15 can enter the interior of the installation box 8; after the second insulator 15 is inserted into the installation box 8, it moves to the right again, so that the right end of the horizontal block is inserted between the first insulator 9 and the inner lower wall of the installation box 8, thereby making the second conductive block 20 and the first conductive block 10, the second conductive block 20 is electrically connected to the inside of the plug-in box 3, and the first conductive block 10 is electrically connected to the inside of the connection box 2. When the first conductive block 10 and the second conductive block 20 are in contact with each other, the electrical connection between the connection box 2 and the plug-in box 3 is achieved; after the plug-in box 3 and the connection box 2 are installed, the baffle 4 is pushed downward from the position flush with the plug-in box 3, and the two groups of baffles 4 are stuck at the left and right ends of the connection box 2 and the left and right ends of the plug-in box 3, so that the connection box 2 and the plug-in box 3 will no longer move in the left and right directions, thereby ensuring that the second conductive block 20 will not be separated from the first conductive block 10 during use; during assembly, in order to avoid the inconvenience of assembly caused by the fall of the baffle 4, the baffle 4 can be lifted up through the buckle groove 401 until the slide bar 402 contacts the inner upper wall of the slide groove 3011, at this time, the lower end of the baffle 4 is flush with the lower wall of the plug-in box 3, which will not affect the assembly, and the baffle 4 is fixed by the mutual adsorption of the first magnet 5 and the second magnet 6, and will not fall by itself;During assembly, the four sets of guide wheels 19 are placed in the four sets of guide grooves 14 so that the connection box 2 and the plug-in box 3 are aligned in the front-to-back direction, and the guide wheels 19 are kept as close to the right side of the guide grooves 14 as possible. At this time, the lower wall of the second insulator 15 is in contact with the upper wall of the connection box 2. Hold the plug-in box 3 with both hands, keep the second insulator 15 in contact with the upper wall of the connection box 2, and then push it to the left. The second insulator 15 contacts the toggle block 701 to push open the slide cover 7 until the toggle block 701 is blocked by the inner left wall of the plug interface 201. At this time, the slide cover 7 It has been opened, and the second insulator 15 is located above the opening of the installation box 8. Then press the plug box 3 downward until the lower wall of the second insulator 15 abuts against the lower wall inside the installation box 8, and then push the plug box 3 to the right, driving the cross block to insert between the lower wall of the first insulator 9 and the lower wall inside the installation box 8 until it can no longer be pushed. At this time, the assembly is completed, and the two sets of baffles 4 are pushed downward and respectively clamped at the left and right ends of the connection box 2 to complete the fixation. During the process of pressing the plug box 3 downward, the sliding rod 17 can extend into the inside of the fixing sleeve 16 without causing interference. ;

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A busbar branch plug-in device with a high protection level, characterized in that: The utility model comprises a bus duct body and a plug-in box (3), wherein the bus duct body comprises a bus duct shell (1) and a plurality of groups of conductive bars cast inside the bus duct shell (1), a connection box (2) is fixedly connected to the top of the bus duct shell (1), a plurality of groups of plug-in ports (201) are arranged on the upper wall of the connection box (2), an installation box (8) is fixedly connected to the inner upper wall of the connection box (2) and located below the plug-in ports (201), the inner side cross-section of the installation box (8) is in the shape of an inverted cone with a larger upper portion and a smaller lower portion, a sliding cover (7) for covering the plug-in ports (201) is arranged between the installation box (8) and the upper wall of the connection box (2), a first insulator (9) is fixedly connected to the inner wall of the installation box (8), and the plug-in box (3) has a plurality of plug-in ports (201) arranged on the left and right sides. Two groups of protrusions (301) are fixedly connected to both side walls; a baffle (4) is slidably connected between two groups of the four groups of protrusions (301) located on the same side via a sliding structure; a magnetic attraction structure for magnetic attraction and fixing is provided between the baffle (4) and the opposite side of the plug-in box (3); a guide structure for positioning and guiding during assembly is provided between the opposite side of the plug-in box (3) and the connection box (2); a plurality of groups of second insulators (15) are fixedly connected to the lower wall of the plug-in box (3); when the plug-in box (3) and the connection box (2) are aligned vertically, the plurality of groups of second insulators (15) are aligned vertically with a group of installation boxes (8) respectively; and a conductive structure for connecting electricity is provided between the second insulators (15) and the first insulators (9); The conductive structure comprises a first conductive block (10) and a second conductive block (20), wherein the first conductive block (10) is fixedly connected to the lower wall of the first insulator (9) and the lower surface of the first conductive block (10) protrudes from the lower wall of the first insulator (9), the second conductive block (20) is fixedly connected to the upper wall of the horizontal block of the second insulator (15) and is located on the right side of the vertical block, the upper wall of the second conductive block (20) protrudes from the upper wall of the horizontal block of the second insulator (15), and when the lower wall of the second insulator (15) abuts against the inner lower wall of the installation box (8), the upper wall of the second conductive block (20) is at the same level as the first conductive block (10).

2. A high protection grade busbar branch plug-in device according to claim 1, characterized in that: The sliding cover (7) passes through the left wall of the installation box (8) and is slidably connected thereto; a toggle block (701) is fixedly connected to the upper wall of one end of the sliding cover (7) extending into the interior of the installation box (8); an end of the toggle block (701) away from the sliding cover (7) passes through the plug interface (201) and extends to the upper side of the connection box (2); and an elastic structure for pressing the sliding cover (7) to the right to cover the plug interface (201) is provided between the end of the sliding cover (7) extending to the left side of the installation box (8) and the plug interface (201).

3. A high protection grade busbar branch plug-in device according to claim 2, characterized in that: The first insulator (9) is located near the upper wall and the right wall of the installation box (8); the height of the first insulator (9) is half the depth of the installation box (8) and the width of the first insulator (9) in the left-right direction is half the width of the inner wall of the installation box (8) in the left-right direction; the second insulator (15) is composed of a vertical block and a horizontal block and is L-shaped in frontal projection; the vertical block is fixedly connected to the lower wall of the plug-in box (3); the horizontal block is fixedly connected to the end of the vertical block away from the plug-in box (3) and extends toward the right side of the vertical block; the width of the horizontal block in the left-right direction is less than the distance between the inner left wall of the installation box (8) and the left wall of the first insulator (9); the cross-sectional shape of the cross-sectional shape of the installation box (8) in side view coincides with the cross-sectional shape of the installation box (8); when the lower wall of the cross-sectional block abuts against the inner lower wall of the installation box (8), the horizontal height of the upper wall of the cross-sectional block is lower than the horizontal height of the lower wall of the first insulator (9).

4. A high protection grade busbar branch plug-in device according to claim 3, characterized in that: The sliding structure comprises two groups of sliding grooves (3011) and two groups of sliding strips (402); the two groups of sliding strips (402) are respectively arranged on the front and rear sides of the baffle (4); the two groups of sliding grooves (3011) are respectively arranged between two groups of protrusions (301) located on the same side of the plug-in box (3); the two groups of sliding strips (402) are respectively slidably connected to the inner side walls of one group of sliding grooves (3011); and the baffle (4) is slidably connected to the protrusions (301) via the sliding strips (402) and the sliding grooves (3011).

5. A high protection grade busbar branch plug-in device according to claim 4, characterized in that: The magnetic attraction structure comprises a first magnet (5) and a second magnet (6), wherein the first magnet (5) and the second magnet (6) are respectively fixedly connected between the baffle plate (4) and the opposite side of the plug-in box (3), and when the lower wall of the baffle plate (4) and the lower wall of the plug-in box (3) are aligned in horizontal height, the first magnet (5) and the second magnet (6) are aligned in horizontal direction.

6. A high protection grade busbar branch plug-in device according to claim 5, characterized in that: The guide structure comprises four groups of guide wheels (19) and four groups of guide grooves (14); the four groups of guide grooves (14) are all arranged on the upper wall of the connection box (2) and are respectively close to the four corners of the upper wall of the connection box (2); the four groups of guide wheels (19) are all rotatably connected to the lower wall of the plug-in box (3) and are respectively opposite to a group of guide grooves (14) in upper and lower directions; the axis of the guide wheel (19) is perpendicular to the length direction of the plug-in box (3) in top view projection, and the length direction of the guide groove (14) is parallel to the length direction of the connection box (2).

7. A high protection grade busbar branch plug-in device according to claim 6, characterized in that: A fixing sleeve (16) is fixedly connected to the lower wall of the plug-in box (3) and the upper and lower positions of the four groups of guide grooves (14). A sliding rod (17) is slidably connected to the inner wall of the fixing sleeve (16). A limiting ring is provided on the outer wall of the sliding rod (17) and near the upper end. The circumferential outer wall of the limiting ring is slidably connected to the inner wall of the fixing sleeve (16). The sliding rod (17) is rectangular in a bottom view. A second spring (21) is provided between the upper wall of the sliding rod (17) and the inner upper wall of the fixing sleeve (16). The lower end of the sliding rod (17) passes through the lower wall of the fixing sleeve (16) and extends to the fixing sleeve (16). The sleeve (16) is below the sliding rod (17), one end of the sliding rod (17) extending below the fixed sleeve (16) is fixedly connected to the connecting seat (18), the guide wheel (19) is rotatably connected to the end of the connecting seat (18) away from the sliding rod (17), the end of the guide wheel (19) away from the connecting seat (18) is rollingly connected to the inner wall of the guide groove (14), and when the guide wheel (19) contacts the inner right wall of the guide groove (14), the end of the second insulator (15) away from the plug-in box (3) abuts against the upper wall of the connecting box (2), and the second insulator (15) is located on the right side of the corresponding toggle block (701).

8. A high protection grade busbar branch plug-in device according to claim 7, characterized in that: The elastic structure comprises a slide rod (12), a first spring (13) and a slide seat (11); the slide seat (11) is fixedly connected to the inner upper wall of the connection box (2) and is located on the left side of the installation box (8); the slide rod (12) is fixedly connected to the end of the slide cover (7) extending to the left side of the installation box (8); the end of the slide rod (12) away from the slide cover (7) passes through the inner wall of the slide seat (11) and is slidably connected thereto; the first spring (13) is sleeved on the outer wall of the slide rod (12) and is located between the slide seat (11) and the slide cover (7).

9. A high protection grade busbar branch plug-in device according to claim 8, characterized in that: The width between the opposite sides of the two groups of baffles (4) matches the width of the connection box (2) in the left-right direction, and the opposite sides of the two groups of baffles (4) are both provided with hand-gripping grooves (401) for facilitating lifting of the baffles (4).

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