Busbar plug-in box, plug-in bus duct and bus duct plug-in device

Abstract

The utility model belongs to the technical field of electric power equipment discloses a bus plug -in box, plug -in bus duct and bus duct plug -in device, this line plug -in box includes box body, lid and cover plate, the lid detachable setting is in the box body, and the cover plate is located between the lid and the box body, be equipped with the slot on the box body, the cover plate swing setting is in the box body, and the cover plate has first position and second position with the box body, when the cover plate is in first position, the cover plate shields the slot, when the cover plate is in second position, the cover plate is staggered with the slot, and the slot is in the exposed state. The bus plug -in box effectively avoids when not having inserted the plug -in box, each bus duct conducting body exposes the slot to lead the problem of the operator mistake touch electric shock, effectively improves the protection effect.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, specifically relating to a busbar junction box, a plug-in busbar trunking, and a busbar trunking plug-in device. Background Technology

[0002] With residential buildings now predominantly high-rise, the installation of enclosed busbars as the main power supply lines in electrical shafts of high-rise buildings is becoming increasingly common. These busbars are used for the transmission and connection of current between power distribution facilities. An enclosed busbar system (or simply busbar trunking) consists of a metal plate (steel or aluminum plate) as a protective shell, conductive bars, insulation materials, and related accessories. It can be manufactured as a plug-in type enclosed busbar trunking with junction boxes at intervals, or as a feeder type enclosed busbar trunking without junction boxes in the middle. In the power supply systems of high-rise buildings, power and lighting circuits are often installed separately, and busbar trunking, as the main power supply line, is installed vertically along the wall in the electrical shaft, one or more times.

[0003] To meet the tapping requirements of electrical equipment, busbar trunking typically has busbar conductive contacts installed at predetermined locations on its outer casing. These conductive contacts are exposed at openings in the busbar trunking casing, forming power tapping points. Existing technology commonly uses busbar junction boxes for tapping operations. These boxes are fixedly installed at the corresponding openings in the busbar trunking casing. Their structural design includes one or more matching square slots. When the junction box is installed, the conductive contacts on the busbar trunking are precisely accommodated within these square slots, facilitating power tapping. When power is needed, the operator pushes the junction box into the square slot of the busbar junction box, allowing the conductors inside the junction box to make precise and reliable electrical contact with the exposed busbar conductive contacts, thus completing the power distribution. However, when the busbar trunking system is operating normally but no junction box is plugged in, the busbar conductive contacts are exposed in the square slots of the busbar junction box. When the cover of the busbar junction box is open, the operator's hands, tools or other conductive objects are very likely to come into direct contact with the exposed live busbar conductive contacts in the square slots when they are near or operating the box, which will lead to serious electric shock accidents and threaten the personal safety of the operators. Utility Model Content

[0004] The purpose of this utility model is to provide a busbar junction box that can be switched to a state of blocking the slots, effectively preventing the problem of operators accidentally touching and getting electric shocks when the various conductive contacts on the busbar trunking are exposed in the slots when no junction box is plugged in.

[0005] The following technical solutions are used to achieve the above objectives.

[0006] The first aspect of this utility model provides a busbar junction box, which includes a box body, a cover body, and a cover plate;

[0007] The cover is detachably mounted on the box body, and the cover plate is located between the cover and the box body; the box body is provided with a slot; the cover plate is movably mounted on the box body, and the cover plate has a first position and a second position relative to the box body. When the cover plate is in the first position, the cover plate covers the slot; when the cover plate is in the second position, the cover plate is offset relative to the slot, and the slot is exposed.

[0008] In some embodiments, the box body is provided with a positioning member with elastic properties, and the positioning member is at least partially exposed outside the box body in its normal state, and is retracted into the box body in its retracted state; the cover plate is provided with a first positioning hole and a second positioning hole; when the cover plate is in a first position, the first positioning hole is opposite to the positioning member, and the positioning member is normally inserted through the first positioning hole; when the cover plate is in a second position, the second positioning hole is opposite to the positioning member, and the positioning member is normally inserted through the second positioning hole.

[0009] In some embodiments, the first positioning hole and the second positioning hole are connected and a connecting channel is formed between the first positioning hole and the second positioning hole; the radial length of the positioning member is greater than the width of the connecting channel, and the radial length of the first positioning hole and the second positioning hole is greater than the radial length of the positioning member.

[0010] In some embodiments, the box body is provided with a receiving groove; the positioning element includes a positioning post and an elastic element, the positioning post is slidably disposed in the receiving groove, and the positioning post is connected to the box body through the elastic element.

[0011] In some embodiments, the box body is provided with a guide groove; the cover plate is provided with a guide member on the side near the box body, and the guide member slides in the guide groove; or, the box body is provided with a guide member; the cover plate is provided with a guide groove on the side near the box body, and the guide member slides in the guide groove.

[0012] In some embodiments, the busbar junction box further includes a panel having a through hole adapted to the slot; the panel is detachably mounted on the box body, and the cover plate is disposed between the panel and the box body.

[0013] In some embodiments, one end of the box body is provided with a rotating hole; one end of the cover body is provided with a rotating shaft, the rotating shaft being rotatably inserted into the rotating hole, and one side of the rotating shaft forming an inclined surface, the cover body being able to slide along the extending direction of the inclined surface to detach from or be fitted onto the box body; and / or,

[0014] The cover is provided with a first locking hole, and the box is provided with a second locking hole. The cover is connected to the first locking hole and the second locking hole in sequence by locking members to lock with the box.

[0015] The second aspect of this utility model provides a plug-in busbar trunking, which includes a busbar trunking body and a busbar plug box as described above.

[0016] The busbar trunking body includes a housing and a conductive element disposed on the housing; the busbar junction box is disposed on the housing, and the conductive element is inserted into the slot.

[0017] In some embodiments, the conductive element includes two ground contact pieces; the two ground contact pieces have a copper side facing each other and an aluminum side facing away from each other, and the first ends of the two ground contact pieces away from the housing are arranged facing each other and cooperate to form an interface groove, and the second ends close to the housing are stacked on the housing.

[0018] The third aspect of this utility model provides a busbar trunking plug-in device, which includes a plug-in box and a plug-in busbar trunking as described above; the plug-in box has pins, which are detachably plugged into the slot and in contact with the conductive element.

[0019] In some embodiments, the plug box has an annular groove on the side near the housing, and a sealing layer is provided in the annular groove. The housing has an annular flange on the side near the plug box. The plug box is plugged in and fitted with the annular groove and the annular flange, and the sealing layer is pressed to form a sealed connection.

[0020] The technical solution provided by this utility model has the following advantages and effects:

[0021] This busbar junction box features a movable cover plate between the box body and the cover. By controlling the position of the cover plate relative to the box body, the position of the cover plate can be adjusted according to the operating status of the busbar system. When the busbar system is operating normally and a junction box is needed for power access, adjusting the cover plate to the second position offsets the cover plate from the slot, exposing the slot for easy junction box connection. When the busbar system is operating normally but no junction box is connected, adjusting the cover plate to the first position blocks the slot, thus preventing the busbar conductive components from being exposed in the busbar junction box slot. This effectively avoids the problem of accidental electric shock to operators due to exposed busbar conductive components in the slot when no junction box is connected, significantly improving the protection effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the busbar trunking connection device according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall structure of the plug-in busbar trunking according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the overall structure of the busbar junction box according to an embodiment of the present utility model.

[0025] Figure 4 yes Figure 3 An exploded view of the busbar junction box.

[0026] Figure 5 This is a schematic diagram of the structure of the cover body according to an embodiment of the present utility model.

[0027] Figure 6 This is a schematic diagram of the busbar junction box after removing the cover and panel according to an embodiment of the present invention.

[0028] Figure 7 yes Figure 3 A cross-sectional view of the busbar junction box.

[0029] Figure 8 yes Figure 1 A schematic diagram of the longitudinal section structure of the busbar trunking plug-in device.

[0030] Figure 9 yes Figure 8 A magnified schematic diagram of a portion of the busbar trunking connection device.

[0031] Figure 10 This is a schematic diagram of the connection structure of the ground contact piece and the ground pin.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Busbar duct plug-in device;

[0034] 10. Plug-in busbar trunking; 20. Plug-in box; 201. Phase wire plug; 202. Ground wire plug; 203. Annular groove;

[0035] 1. Busbar junction box; 11. Box body; 111. Slot; 112. Receiving groove; 113. Guide groove; 114. Rotating hole; 115. Second locking hole; 116. Annular flange; 12. Cover; 121. Rotating shaft; 122. Inclined surface; 123. First locking hole; 13. Cover plate; 131. First positioning hole; 132. Second positioning hole; 133. Connecting channel; 134. Guide component; 14. Positioning component; 141. Positioning post; 142. Elastic component; 15. Panel;

[0036] 2. Busbar trunking body; 21. Outer shell; 22. Conductive components; 221. Ground contact piece; 222. Conductive contact; 223. Elastic sheet. Detailed Implementation

[0037] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0038] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0039] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0041] This utility model provides a busbar junction box 1, such as Figures 1 to 10 As shown, the busbar junction box 1 includes a box body 11, a cover 12, and a cover plate 13. It should be noted that the busbar junction box 1 is installed on the outer shell 21 of the busbar trunking at the position corresponding to the conductive component 22, serving as a plug-in base for power tapping into the junction box 20. The cover 12 is detachably mounted on the box body 11, and the cover plate 13 is located between the cover 12 and the box body 11. The cover 12 protects the components inside the box body 11. When not tapping for power, the cover 12 can be closed to the top of the box body 11, forming a closed unit to protect the internal structure of the busbar junction box 1 and prevent dust and liquid from entering. Furthermore, the cover 12 can be locked when closed to the box body 11, ensuring that the busbar junction box 1 can only be opened by designated personnel, preventing accidental operation. The box body 11 is provided with a slot 111; the cover plate 13 is movably disposed on the box body 11, and the cover plate 13 has a first position and a second position relative to the box body 11. When the cover plate 13 is in the first position, the cover plate 13 covers the slot 111; when the cover plate 13 is in the second position, the cover plate 13 is offset from the slot 111, and the slot 111 is exposed.

[0042] Specifically, the box 11 is provided with multiple independently arranged square slots 111 that run vertically from the bottom upwards. When the busbar box 1 is installed in the busbar trunking shell 21, the busbar conductive parts 22 are located in the slots 111 of the box 11 and are separated from each other, thereby separating each conductive part 22 by a sufficient distance to prevent short circuit. The cover plate 13, which is movable relative to the box body 11, is provided on the box body 11. The box body 11 has a cuboid structure, and the slots 111 are spaced apart along the length of the box body 11. The length of the cover plate 13 matches the length of the box body 11, but the width of the cover plate 13 is shorter than the width of the box body 11, so that the cover plate 13 can move along the width of the box body 11. The difference between the width of the cover plate 13 and the width of the box body 11 should be greater than the width of the slots 111, so that the cover plate 13 can move to be offset from or block the slots 111. Specifically, in this embodiment, the width of the cover plate 13 is half the width of the box body 11, so that the cover plate 13 has sufficient room to move on the box body 11. By controlling the position of the cover plate 13 relative to the box 11, the position of the cover plate 13 can be adjusted according to the working status of the busbar system. When the busbar system needs to operate normally and the plug-in box 20 needs to be plugged in, the cover plate 13 is adjusted to the second position, and the cover plate 13 is offset from the slot 111. The slot 111 is exposed. At this time, each conductive component 22 on the busbar is exposed in the slot 111. The operator pushes the plug-in box 20 into the square slot 111 of the busbar plug-in box 1. The conductor inside the plug-in box 20 makes reliable electrical contact with the exposed busbar conductive components 22, thereby completing the distribution of electrical energy. When the busbar system is operating normally but the plug box 20 is not plugged in, when the cover plate 13 is adjusted to the first position, the cover plate 13 covers the slot 111, thereby blocking the conductive parts 22 from being exposed to the slot 111 of the busbar plug box 1. This effectively avoids the problem of operators accidentally touching and getting electric shock when the various conductive parts 22 on the busbar are exposed to the slot 111 when the plug box 20 is not plugged in.

[0043] In some implementations, such as Figure 6 and Figure 7As shown, the box body 11 is provided with a positioning member 14 with elastic properties. The positioning member 14 is at least partially exposed outside the box body 11 in its normal state, and retracted inside the box body 11 when in a retracted state. The cover plate 13 is provided with a first positioning hole 131 and a second positioning hole 132. When the cover plate 13 is in the first position, the first positioning hole 131 is opposite to the positioning member 14, and the positioning member 14 normally passes through the first positioning hole 131. When the cover plate 13 is in the second position, the second positioning hole 132 is opposite to the positioning member 14, and the positioning member 14 normally passes through the second positioning hole 132. By providing the first positioning hole 131 and the second positioning hole 132 on the cover plate 13, the two positioning holes, in cooperation with the positioning member 14, can prevent the cover plate 13 from moving further when it moves to the first or second position, thereby allowing the cover plate 13 to move precisely to the position of blocking the slot 111 or exposing the slot 111. Understandably, when it is necessary to move the cover plate 13 from the state of blocking the slot 111 or to the state of exposing the slot 111, that is, from the first position to the second position, the positioning member 14 is in the normal state and passes through the first positioning hole 131 to restrict the movement of the cover plate 13. Pressing the positioning member 14 causes the positioning member 14 to be in a retracted state and retracted into the box body 11. At this time, the cover plate 13 can move towards the second position. When it is in place, the positioning member 14 is positioned opposite to the second positioning hole 132. The positioning member 14 returns to the normal state under its own elasticity and passes through the second positioning hole 132 to restrict the movement of the cover plate 13. Similarly, when moving the cover plate 13 from the second position to the first position, pressing the positioning member 14 and moving the cover plate 13 in the opposite direction can make the cover plate 13 move accurately to the position of blocking the slot 111 or exposing the slot 111, and form a positioning indication.

[0044] In some implementations, such as Figure 6 As shown, the first positioning hole 131 and the second positioning hole 132 are connected, and a connecting channel 133 is formed between the first positioning hole 131 and the second positioning hole 132; the radial length of the positioning member 14 is greater than the width of the connecting channel 133, and the radial length of the first positioning hole 131 and the second positioning hole 132 is greater than the radial length of the positioning member 14. Understandably, the first positioning hole 131 and the second positioning hole 132 form a continuous hole structure resembling a dumbbell or racetrack through the connecting channel 133, and the diameter or the widest dimension of the positioning member 14 is greater than the width of the connecting channel 133 connecting the two positioning holes. This ensures that the positioning member 14 will not slide out of the connecting channel 133 during normal positioning, thus preventing it from affecting the limiting effect of the positioning hole on the positioning member 14, and enabling a smooth transition of the positioning member 14 between the two positioning holes, improving the smoothness of the position switching of the cover plate 13.

[0045] In some implementations, such as Figure 7As shown, the box body 11 has a receiving groove 112; the positioning member 14 includes a positioning post 141 and an elastic member 142. The positioning post 141 slides in the receiving groove 112 and is connected to the box body 11 through the elastic member 142. The top of the box body 11 has a vertically extending, non-penetrating receiving groove 112. The positioning post 141 slides tightly in the receiving groove 112, allowing it to slide linearly along the groove, effectively preventing positional deviation during movement. Even if the cover plate 13 applies a non-perfectly vertical lateral force to the positioning post 141, the receiving groove 112 effectively resists this lateral force, preventing the positioning post 141 from bending or jamming. The elastic member 142, like a spring, has one end abutting the bottom of the receiving groove 112 and the other end abutting the bottom of the positioning post 141. The compression or extension of the spring drives the positioning post 141 to slide directionally within the receiving groove 112. Specifically, in this embodiment, the bottom of the positioning post 141 is provided with a placement groove, one end of the spring is accommodated in the placement groove and connected to the bottom of the placement groove, thereby further ensuring that the spring is directionally compressed or extended.

[0046] In some implementations, such as Figure 4 As shown, the box body 11 is provided with a guide groove 113; the cover plate 13 is provided with a guide member 134 on the side near the box body 11, and the guide member 134 slides in the guide groove 113; or, the box body 11 is provided with a guide member 134; the cover plate 13 is provided with a guide groove 113 on the side near the box body 11, and the guide member 134 slides in the guide groove 113. The box body 11 and the cover plate 13, through the sliding cooperation of the guide member 134 and the guide groove 113, enable the cover plate 13 to slide linearly to a first position or a second position. Specifically, a guide groove 113 is formed on the housing 11 or the cover plate 13, and a guide member 134, such as a slider, rib, or bushing, with a shape matching the guide groove 113 is provided on the cover plate 13 or the housing 11. The guide member 134 is embedded in the guide groove 113, and there is a precise clearance fit between the two, that is, smooth sliding is allowed but wobbling is restricted, so that the cover plate 13 can slide in a directional manner to the first position or the second position, thereby improving the accuracy of movement. Specifically, multiple guide members 134 can be provided as needed, and the number of guide grooves 113 corresponding to the number of guide members 134 is specific and is not particularly limited here.

[0047] In some implementations, such as Figure 4As shown, the busbar junction box 1 also includes a panel 15, which has a through hole adapted to the slot 111. The panel 15 is detachably mounted on the box body 11, and a cover plate 13 is disposed between the panel 15 and the box body 11. By mounting the panel 15 on the surface of the cover plate 13, the panel 15 can be secured to the box body 11 using a snap-fit ​​or similar structure, facilitating disassembly. The shape of the panel 15 is adapted to the shape of the box body 11, allowing it to cover the entire surface of the box body 11, exposing only the slot 111 while concealing the rest of the surface. Notably, the panel 15 also has notches corresponding to the two positioning holes and the connecting channel 133, allowing operators to visually observe the position of the cover plate 13. The panel 15 provides good protection when the cover 12 is open and also enhances aesthetics.

[0048] In some implementations, such as Figure 4 and Figure 5 As shown, one end of the box body 11 is provided with a rotating hole 114; one end of the cover body 12 is provided with a rotating shaft 121, which is rotatably inserted into the rotating hole 114, and one side of the rotating shaft 121 forms an inclined surface 122. The cover body 12 can slide along the extension direction of the inclined surface 122 to detach from or be assembled with the box body 11. Specifically, rotating holes 114 are provided on opposite sides of one end of the box body 11, and mounting portions are formed on opposite sides of one end of the cover body 12. The rotating shaft 121 is provided on one side of each of the two mounting portions, so that the cover body 12 can be rotatably connected with the box body 11 through the cooperation of the two rotating shafts 121 and the two rotating holes 114. The cover body 12 can rotate freely around the axis of the rotating shaft 121, realizing the switching from the closed state to the open state. Furthermore, by forming an inclined surface 122 on one side of the rotating shaft 121, specifically by forming an inclined surface 122 structure on the outer wall of the rotating shaft 121 near the outer surface of the cover 12, when the cover 12 rotates relative to the box 11 to a certain angle, such as 45°, by applying force to the cover 12 along the extension direction of the inclined surface 122, the cover 12 can be quickly detached from the box 11 or assembled into the box 11 to form a quick-release structure.

[0049] In some implementations, such as Figure 3 and Figure 4As shown, the cover 12 has a first locking hole 123, and the box 11 has a second locking hole 115. The cover 12 is sequentially connected to the first locking hole 123 and the second locking hole 115 via locking components to lock it to the box 11. Specifically, the first locking hole 123 can be provided at the end of the cover 12 away from the rotating shaft 121, and the second locking hole 115 can be provided at the end of the box 11 away from the rotating hole 114. The two locking holes are locked together by locking components such as conventional locks. It can be understood that when the cover 12 is closed on the box 11, the box 11 and the cover 12 form a closed whole, which is used to protect the internal structure of the busbar junction box 1 and prevent dust and liquid from entering. Moreover, when the cover 12 is closed on the box 11, it can be locked to the box 11 by the locking components, thereby ensuring that the busbar junction box 1 can only be opened by designated personnel to prevent accidental operation. In addition, the cover 12 can be further fixed to the box 11 by means of screws or bolts to form a threaded connection, so as to further improve the stability of the two covering each other.

[0050] This utility model also provides a plug-in busbar trunking 10, such as Figures 1 to 10 As shown, the plug-in busbar trunking 10 includes a busbar trunking body 2 and a busbar junction box 1 as described above. The busbar trunking body 2 includes a housing 21 and a conductive element 22 disposed on the housing 21. The busbar junction box 1 is detachably disposed on the housing 21, specifically through bolt connection, pin connection, snap-fit ​​connection, etc. Of course, the connection between the busbar junction box 1 and the housing 21 can also be non-detachable, which is not particularly limited here. Specifically, in this embodiment, the busbar junction box 1 is detachably disposed on the housing 21. When the busbar junction box 1 is disposed on the housing 21, the conductive element 22 is inserted into the slot 111. The busbar trunking body 2 includes conventional components such as busbars. The busbars are covered by a housing 21. The busbars are equipped with conductive elements 22 at the points where they need to be plugged in, which are used for the plug-in boxes 20 of the branch unit to make contact and draw power. The conductive elements 22 are exposed outside the housing 21. When the busbar plug-in box 1 is installed on the housing 21, the conductive elements 22 are plugged into the slots 111 of the box 11 and separated from each other, so that the operator can push the plug-in box 20 into the slots 111 of the busbar plug-in box 1. The conductors inside the plug-in box 20 make reliable electrical contact with the exposed conductive elements 22, thereby completing the distribution of electrical energy.

[0051] A cover plate 13, movable relative to the box body 11, is provided between the box body 11 and the cover body 12 via the busbar junction box 1. By controlling the position of the cover plate 13 relative to the box body 11, the position of the cover plate 13 can be adjusted according to the working state of the busbar trunking. When the busbar trunking system is operating normally and the junction box 20 needs to be plugged in for power access, when the cover plate 13 is adjusted to the second position, the cover plate 13 is offset from the slot 111, and the conductive parts 22 are exposed to facilitate the insertion of the junction box 20 for power access. When the busbar trunking system is operating normally but the junction box 20 is not plugged in, when the cover plate 13 is adjusted to the first position, the cover plate 13 blocks the slot 111, thereby blocking the conductive parts 22 from being exposed at the slot 111 of the busbar junction box 1. This effectively avoids the problem of the conductive parts 22 on the busbar trunking being exposed at the slot 111 when the junction box 20 is not plugged in, which could lead to accidental electric shock to the operator, thus effectively improving the protection effect.

[0052] In some implementations, such as Figures 8 to 10 As shown, the conductive component 22 includes a conductive contact 222 and two ground contact pieces 221; the two ground contact pieces 221 have a copper side facing each other and an aluminum side facing away from each other, and the first ends of the two ground contact pieces 221 away from the outer casing 21 are arranged facing each other and cooperate to form an interface groove, and the second ends close to the outer casing 21 are stacked on the outer casing 21. Understandably, when power is drawn through the plug box 20, since the plug box 20 has phase wire plug 201 and ground wire plug 202, when the plug box 20 is plugged into the busbar box 1, the phase wire plug 201 contacts the conductive contact 222, and the ground wire plug 202 contacts the two ground wire contact pieces 221. The ground wire plug 202 contacts the outer shell 21 of the busbar trunking body 2 through the two ground wire contact pieces 221. The ground wire plug 202 contacts the copper surface of the ground wire contact piece 221. The ground wire plug 202 is a copper metal part, and the outer shell 21 is an aluminum metal shell. Therefore, through the specific structural design of the ground wire contact piece 221, copper can contact copper and aluminum can contact aluminum, effectively avoiding direct contact between copper and aluminum, retaining the characteristics of copper-copper contact and aluminum-aluminum contact, reducing contact resistance, and preventing reaction between the two poles of the resistance.

[0053] In some implementations, such as Figure 10 As shown, an elastic piece 223 is provided on the side of the ground contact piece 221 that is away from the other ground contact piece 221. The elastic piece 223 abuts against the ground contact piece 221, so the reliability of the grounding of the plug box 20 can be guaranteed by the limiting of the elastic piece 223.

[0054] This utility model also provides a busbar trunking plug-in device 100, such as Figures 1 to 10As shown, the busbar trunking plug-in device 100 includes a plug-in box 20 and a plug-in busbar trunking 10 as described above. The plug-in box 20 has an annular groove 203 on the side near the housing 11, and a sealing layer is provided at the annular groove 203. The housing 11 has an annular flange 116 on the side near the plug-in box 20. The plug-in box 20 is plugged in and fitted with the annular groove 203 and the annular flange 116 and the sealing layer is squeezed to form a sealed connection. The sealing layer can be an elastic rubber strip, etc., so that the contact surface of the two has good sealing performance, forming good protective performance and effectively preventing the entry of liquid or dust.

[0055] In some embodiments, the bottom of the plug-in box 20 is also provided with a locking block, which is bent into an L-shape so that it can be locked onto the outer shell 21 of the bus trunking body 2 when plugged in, thereby further improving the stability of the plugged-in state.

[0056] In summary, the busbar junction box 1, by providing a cover plate 13 that is movable relative to the box body 11 between the box body 11 and the cover 12, allows the position of the cover plate 13 to be adjusted according to the working state of the busbar trunking by controlling the position of the cover plate 13 relative to the box body 11. When the busbar trunking system is operating normally and the junction box 20 needs to be plugged in for power access, adjusting the position of the cover plate 13 to the second position causes the cover plate 13 to be offset relative to the slot 111, and the slot 111 is exposed to facilitate the insertion of the junction box 20 for power access. When the busbar trunking system is operating normally but the junction box 20 is not plugged in, adjusting the cover plate 13 to the first position causes the cover plate 13 to block the slot 111, thereby blocking the busbar conductive parts 22 from being exposed in the slot 111 of the busbar junction box 1. This effectively prevents the problem of operators accidentally touching and getting electric shock when the busbar conductive parts 22 are exposed in the slot 111 when the junction box 20 is not plugged in, thus effectively improving the protection effect.

[0057] The above embodiments are not an exhaustive list based on this utility model, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A bus plug-in box characterized by, The busbar junction box includes a box body, a cover body, and a cover plate; The cover is detachably mounted on the box body, and the cover plate is located between the cover and the box body; the box body is provided with a slot; the cover plate is movably mounted on the box body, and the cover plate has a first position and a second position relative to the box body. When the cover plate is in the first position, the cover plate covers the slot; when the cover plate is in the second position, the cover plate is offset relative to the slot, and the slot is exposed.

2. The bus plug-in box of claim 1, wherein The box body is provided with a positioning member with elastic properties, and the positioning member is at least partially exposed outside the box body when in a normal state, and is retracted inside the box body when in a retracted state; the cover plate is provided with a first positioning hole and a second positioning hole; when the cover plate is in a first position, the first positioning hole is opposite to the positioning member, and the positioning member is normally inserted through the first positioning hole; when the cover plate is in a second position, the second positioning hole is opposite to the positioning member, and the positioning member is normally inserted through the second positioning hole.

3. The bus plug-in box of claim 2, wherein The first positioning hole and the second positioning hole are connected and form a connecting channel between them; the radial length of the positioning member is greater than the width of the connecting channel, and the radial length of the first positioning hole and the second positioning hole is greater than the radial length of the positioning member.

4. The bus plug-in box of claim 2, wherein The box body is provided with a receiving groove; the positioning element includes a positioning post and an elastic element, the positioning post is slidably disposed in the receiving groove, and the positioning post is connected to the box body through the elastic element.

5. The bus plug-in box according to any one of claims 1 to 4, wherein The box body is provided with a guide groove; the cover plate is provided with a guide member on the side near the box body, and the guide member slides in the guide groove; or, the box body is provided with a guide member; the cover plate is provided with a guide groove on the side near the box body, and the guide member slides in the guide groove; and / or The busbar junction box also includes a panel, which has a through hole adapted to the slot; the panel is detachably mounted on the box body, and the cover plate is disposed between the panel and the box body.

6. The bus plug-in box according to any one of claims 1 to 4, wherein One end of the box body is provided with a rotating hole; one end of the cover body is provided with a rotating shaft, the rotating shaft being rotatably inserted into the rotating hole, and one side of the rotating shaft forming an inclined surface, the cover body being able to slide along the extension direction of the inclined surface to detach from or be assembled with the box body; and / or, The cover is provided with a first locking hole, and the box is provided with a second locking hole. The cover is connected to the first locking hole and the second locking hole in sequence by locking members to lock with the box.

7. Plug-in bus duct, characterized in that The plug-in busbar trunking includes a busbar trunking body and a busbar junction box as described in any one of claims 1-6; The busbar trunking body includes a housing and a conductive element disposed on the housing; the busbar junction box is disposed on the housing, and the conductive element is inserted into the slot.

8. The plug-in busway of claim 7, wherein, The conductive component includes two ground contact pieces; the side of the two ground contact pieces facing each other is the copper side, and the side facing away from each other is the aluminum side. The first ends of the two ground contact pieces away from the housing are arranged facing each other and cooperate to form an interface groove, and the second ends close to the housing are stacked on the housing.

9. A busway plug-in device characterized by The busbar trunking connection device includes a connection box and a plug-in busbar trunking as described in any one of claims 7-8; the connection box has pins that are detachably plugged into the slot and in contact with the conductive element.

10. The busway plug-in assembly of claim 9, wherein, The plug box has an annular groove on the side near the box body, and a sealing layer is provided in the annular groove. The box body has an annular flange on the side near the plug box. The plug box is connected and squeezed by the annular groove and the annular flange to form a sealed connection.

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