Bus duct plugging device

Abstract

The invention belongs to the technical field of power equipment, and discloses a bus duct plugging device, which comprises a plugging box, a plugging box and a conductive contact piece, the plug box is used for being assembled on a shell of the bus duct; the jack box is provided with a grounding piece; the conductive contact piece is arranged on the grounding piece or the shell; when the plug box is plugged in the plug box, the grounding piece abuts against the shell through the conductive contact piece. The side, making contact with the grounding piece, of the conductive contact piece is a first metal layer made of the same material as the grounding piece, the side, making contact with the shell, of the conductive contact piece is a second metal layer made of the same material as the shell, and the first metal layer and the second metal layer are made of different metal. According to the bus duct plugging device, the contact resistance of the contact surface between the grounding piece and the shell can be reduced, the grounding reliability is ensured, the oxidation reaction of the grounding piece and the shell caused by contact of different metals is effectively prevented, and the long-term effectiveness of grounding is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power equipment, and particularly relates to a bus duct plug-in device. BACKGROUND

[0002] As a kind of efficient power transmission and distribution equipment, bus ducts are widely used in low-voltage power distribution systems in modern buildings, data centers, industrial plants and other fields. It is usually composed of a series of conductors (bus bars) wrapped by insulating materials, and is connected with plug-in boxes to realize quick electrical connection with plug-in boxes through plug-in boxes arranged on the side wall of the bus duct.

[0003] In the design and manufacture of bus duct systems, the grounding reliability between the plug-in box and the bus duct is a core indicator related to the safe operation of the entire system. At present, the commonly used grounding structure in the industry basically adopts a three-phase five-wire bus duct. The three-phase conductor, N neutral conductor and PE grounding conductor in the three-phase five-wire bus duct are basically isolated from the metal shell of the bus duct. In the prior art, most of the metal shells of the bus duct are not basically connected with the PE line, so that when a single-phase conductor is short-circuited to the metal shell, the circuit breaker cannot realize quick action.

[0004] In some existing bus ducts, the PE grounding conductor appears to be connected with the metal shell and grounded through the metal shell, but in fact, the connection is unreliable, which may cause the current to flow to the ground through the shell, resulting in excessive heating and possibly melting the grounding structure, thereby causing electric shock accidents, and it is difficult to maintain long-term grounding continuity. SUMMARY

[0005] The purpose of the present application is to provide a bus duct plug-in device, wherein the grounding member of the plug-in box is connected with the shell and grounded through the shell, and has the characteristics of reliable connection and long-term continuous grounding.

[0006] To achieve the above purpose, the following technical solutions are implemented.

[0007] The first aspect of the present application provides a bus duct plug-in device, which comprises a plug-in box, a plug-in box and a conductive contact; the plug-in box is used for assembling on the shell of the bus duct; the plug-in box has a grounding member; the conductive contact is arranged on the grounding member or the shell; when the plug-in box is plugged into the plug-in box, the grounding member is in contact with the shell through the conductive contact;

[0008] The side of the conductive contact in contact with the grounding member is a first metal layer made of the same material as the grounding member, and the side of the conductive contact in contact with the shell is a second metal layer made of the same material as the shell, and the first metal layer and the second metal layer are different metals.

[0009] In some embodiments, the bus duct plug-in device further comprises a pressing member having elastic properties; when the plug-in box is plugged into the plug-in case, the pressing member acts on the grounding member or the conductive contact member to make the conductive contact member tightly abut against the shell.

[0010] In some embodiments, the grounding member is at least partially in a soft and deformable structure, the conductive contact member is connected to the grounding member, the pressing member is elastically arranged on the plug-in box, and the pressing member is arranged on a side of the grounding member away from the conductive contact member.

[0011] In some embodiments, the grounding member comprises a fixed segment, a pressing segment, and a connecting segment; the fixed segment is connected to the plug-in box, the pressing segment has a long end and a short end connected to the long end, the long end is movably arranged in the plug-in box, the short end is located outside the plug-in box and connected to the conductive contact member, and the pressing member is arranged on a side of the short end away from the conductive contact member, the connecting segment is in a soft and deformable structure, and the fixed segment is connected to the long end through the connecting segment. And / or, the pressing member comprises a fixed column and a first elastic member, the fixed column is connected to the plug-in box through the first elastic member. And / or, the grounding member and the conductive contact member are both in a sheet structure.

[0012] In some embodiments, the conductive contact member is provided with two, the two conductive contact members are oppositely arranged on the shell; one side of the two conductive contact members facing each other is the first metal layer, and the other side is the second metal layer, and the first ends of the two conductive contact members are vertically arranged on the shell and cooperatively form an interface slot, the second ends of the two conductive contact members are arranged on the shell in a stacked manner, and when the plug-in box is plugged into the plug-in case, the grounding member is plugged into the interface slot.

[0013] In some embodiments, the pressing member is an elastic sheet arranged on a side of at least one conductive contact member corresponding to the second metal layer, the elastic sheet elastically abuts against the first end of the conductive contact member along the arrangement direction of the two conductive contact members. And / or, the grounding member is in a columnar structure, and the conductive contact member is in a sheet structure.

[0014] In some embodiments, the first metal layer is a copper layer, and the second metal layer is an aluminum layer.

[0015] In some embodiments, the edge of the side of the plug-in box close to the grounding member is provided with an annular groove, and a sealing layer is arranged at the annular groove; an annular flange is arranged on the plug-in box; when the plug-in box is plugged into the plug-in box, the plug-in box is plugged into the plug-in box through the annular groove and the annular flange, and the sealing layer is extruded to form a sealed connection.

[0016] In some embodiments, the plug-in box comprises a box body, a box cover and a movable plate.

[0017] The box body is arranged on the shell, the box cover is detachably arranged on the box body, and the movable plate is located between the box cover and the box body; the box body is provided with a plug-in slot for plugging in the plug-in box; the movable plate is movably arranged on the box body, and the movable plate has a first position and a second position relative to the box body; when the movable plate is in the first position, the movable plate blocks the plug-in slot; when the movable plate is in the second position, the movable plate is offset relative to the plug-in slot, and the plug-in slot is in an exposed state.

[0018] In some embodiments, the box body is provided with a positioning member having elastic properties, and the positioning member is at least partially exposed to the box body in a normal state, and is retracted into the box body in a retracted state; the movable plate is provided with a first positioning hole and a second positioning hole; when the movable plate is in the first position, the first positioning hole is arranged opposite to the positioning member, and the positioning member is arranged in the first positioning hole in a normal state; when the movable plate is in the second position, the second positioning hole is arranged opposite to the positioning member, and the positioning member is arranged in the second positioning hole in a normal state.

[0019] In some embodiments, the first positioning hole and the second positioning hole are arranged in communication, and a communication 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 communication 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. And / or, the box body is provided with a receiving groove; the positioning member comprises a positioning column and a second elastic member, the positioning column is slidably arranged in the receiving groove, and the positioning column is connected to the box body by the second elastic member.

[0020] The technical solution provided by the present application has the following advantages and effects:

[0021] 1. The bus duct plug-in device sets a conductive contact between the grounding piece and the shell of the plug-in box, wherein the side of the conductive contact in contact with the grounding piece is a first metal layer of the same material as the grounding piece, and the side of the conductive contact in contact with the shell is a second metal layer of the same material as the shell. When the plug-in box is plugged into the plug-in box, the grounding piece of the plug-in box is in direct contact with the shell through the conductive contact to form a tight contact conduction state, thereby achieving grounding through the shell. The structure of the conductive contact avoids direct contact between different metal materials of the grounding piece and the shell, and instead forms indirect contact between the grounding piece and the conductive contact of the same material, and between the shell and the conductive contact of the same material. Thus, the contact resistance between the grounding piece and the shell is reduced, effectively preventing overheating when current flows from the shell to the ground, causing the grounding structure to melt and resulting in an electric shock accident. The oxidation reaction caused by the contact between different metals of the grounding piece and the shell is also effectively prevented, thereby maintaining long-term grounding continuity. Therefore, the bus duct plug-in device has the characteristics of reliable grounding and long-term stable grounding.

[0022] 2. When the plug-in box is installed on the plug-in box, the grounding piece or the conductive contact is acted on by the pressure piece with certain elastic properties, and the continuous elastic pressure provided by the pressure piece can increase the pressure of the grounding piece and the shell, making the electrical connection structure reliable and stable.

[0023] 3. When the conductive contact is fixed to the grounding piece of the plug-in box, the pressure piece is arranged on the side of the grounding piece away from the conductive contact. Since the pressure piece has a certain elastic stroke, and since the grounding piece is at least partially a soft deformable structure, it has certain deformation properties. Therefore, the continuous elastic pressure provided by the pressure piece, combined with the self-adaptive deformation capability of the soft grounding piece, can increase the pressure of the grounding piece and the shell, making the electrical connection structure reliable and stable, and also compensating for the error gap of the installation of the plug-in box and the plug-in box.

[0024] 4. When two conductive contacts are fixed to the shell and form an interface slot, the elastic sheet is elastically arranged on the conductive contact along the arrangement direction of the two conductive contacts, so that the elastic sheet forms a stroke space for the conductive contact to approach the other conductive contact, and the space of the interface slot can be adapted to the shape of the grounding piece. Therefore, the two conductive contacts can be in close contact with the grounding piece through the limiting of the elastic sheet, making the electrical connection structure reliable and stable, and reducing the machining precision required by traditional rigid connection parts, reducing the production process requirements, thereby reducing production cost and scrap rate.

[0025] 5、The plug-in box adjusts the position of the movable plate according to the working state of the bus duct, when the bus duct is normally running and needs to plug in the plug-in box for power taking, the position of the movable plate is adjusted to the second position, the movable plate is staggered relative to the plug-in groove, the plug-in groove is in the exposed state to facilitate the plug-in of the plug-in box; when the bus duct is normally running but no plug-in box is plugged in, the movable plate is adjusted to the first position, the movable plate blocks the plug-in groove, thereby blocking the bus conductive contact from being exposed to the plug-in groove of the bus plug-in box, effectively avoiding the problem that the conductive contact on the shell is exposed to the plug-in groove when no plug-in box is plugged in, causing the operator to be mistakenly electrified, and effectively improving the protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the bus duct plug-in device of the embodiment of the application.

[0027] Figure 2 is a schematic diagram of the local structure of the bus duct plug-in device of Figure 1 .

[0028] Figure 3 is a schematic diagram of the overall structure of the plug-in box of the embodiment of the application.

[0029] Figure 4 is a schematic diagram of the exploded structure of the plug-in box of Figure 3 .

[0030] Figure 5 is a schematic diagram of the structure of the box cover of the embodiment of the application.

[0031] Figure 6 is a schematic diagram of the structure of the plug-in box after removing the box cover and the panel of the embodiment of the application.

[0032] Figure 7 is a schematic diagram of the cross-sectional structure of the plug-in box of Figure 3 .

[0033] Figure 8 is a schematic diagram of the longitudinal cross-sectional structure of the bus duct plug-in device in an embodiment.

[0034] Figure 9 is a schematic diagram of the longitudinal cross-sectional structure of the local structure of the plug-in box and the shell of the bus duct in the plugged-in state.

[0035] Figure 10 is a schematic diagram of the plug-in structure of the grounding member and the conductive contact member of Figure 8 .

[0036] Figure 11 is a schematic diagram of the longitudinal cross-sectional local structure of the bus duct plug-in device in another embodiment.

[0037] Figure 12 is Figure 11 is an exploded structural schematic view of the grounding member and the conductive contact member.

[0038] Figure 13 is an overall structural schematic view of the grounding member. Figure 11

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 100, bus duct plug-in device;

[0041] 1, plug box; 11, box body; 111, plug slot; 112, containing slot; 113, guide slot; 114, rotating hole; 115, second locking hole; 116, annular flange; 12, box cover; 121, rotating shaft; 122, inclined surface; 123, first locking hole; 13, movable plate; 131, first positioning hole; 132, second positioning hole; 133, communication channel; 134, guide member; 14, positioning member; 141, positioning column; 142, second elastic member; 15, panel; 21, shell; 221, conductive contact member; 2211, first metal layer; 2212, second metal layer; 222, conductive contact; 223, pressing member; 2231, fixed column; 2232, first elastic member;

[0042] 30, plug-in box; 31, phase pin; 32, grounding member; 321, fixed segment; 322, connecting segment; 323, pressing segment; 324, long end; 325, short end; 203, annular groove. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present application, the specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings.

[0044] Unless specifically stated or otherwise defined, the "first, second, and the like" used herein are merely used for distinguishing names and do not represent a specific number or order.

[0045] Unless specifically stated or otherwise defined, the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0046] It should be noted that "fixed to", "connected to" herein can be directly fixed or connected to an element, or indirectly fixed or connected to an element.

[0047] One embodiment of the present application provides a bus duct plug-in device 100, such as Figures 1 to 13 ​As shown, the device comprises a plug box 1, a plug-in box 30, and a conductive contact 221, the plug box 1 is used to assemble on the shell 21 of the bus duct; the plug-in box 30 has a grounding piece 32; the conductive contact 221 is arranged on the grounding piece 32 or the shell 21; when the plug-in box 30 is plugged into the plug box 1, the grounding piece 32 is in contact with the shell 21 through the conductive contact 221. It should be noted that the bus duct includes a bus, a conductive contact 222, and other conventional components, the bus is wrapped with the shell 21, the bus duct is provided with the plug box 1 at the place where the plug-in is required, and the plug-in box 30 of the tapping unit is in contact with the power supply.

[0048] The side of the conductive contact 221 in contact with the grounding piece 32 is a first metal layer 2211 made of the same material as the grounding piece 32, the side of the conductive contact 221 in contact with the shell 21 is a second metal layer 2212 made of the same material as the shell 21, and the first metal layer 2211 and the second metal layer 2212 are different metals. When the power supply operation is performed by the plug-in box 30, the plug-in box 30 is plugged into the plug box 1 to form an electrically conductive state with the bus duct, at this time, the grounding piece 32 of the plug-in box 30 is in direct contact with the shell 21 through the conductive contact 221 to form a tight contact and a conductive state, thereby achieving grounding through the shell 21. It should be noted that the grounding piece 32 of the plug-in box 30 is generally a copper metal piece, and the shell 21 is generally an aluminum metal shell, and the two are different metal materials. Therefore, when the grounding piece 32 of the plug-in box 30 of the prior art is in direct contact with the shell 21 to form grounding, the inventors find that this connection method has the problem of unreliable connection. Further research finds that when the grounding piece 32 is in direct contact with the shell 21, on the one hand, it will cause the contact surface resistance between the grounding piece 32 and the shell 21 to be high, resulting in more heat when the current flows from the shell 21 to the ground, which may cause the grounding structure to be fused, thereby causing an electric shock accident. On the other hand, the two are easy to react when in contact, and impurities in the air and dust will form a thin electrolyte solution on the contact surface, which constitutes a complete oxidation reaction. The surface of the metal aluminum, which originally has good electrical conductivity, is covered with a thin film of aluminum oxide with high resistivity. Aluminum oxide is an insulating material with extremely high resistivity. This film will become thicker over time, affecting the long-term grounding continuity.

[0049] Therefore in the embodiment, the conductive contact piece 221 is arranged between the grounding piece 32 of the plug-in box 30 and the shell 21, wherein the side of the conductive contact piece 221 in contact with the grounding piece 32 is a first metal layer 2211 same in material with the grounding piece 32, and the first metal layer 2211 is specifically a copper metal layer same in material with the grounding piece 32, and the side of the conductive contact piece 221 in contact with the shell 21 is a second metal layer 2212 same in material with the shell 21, and the second metal layer 2212 is an aluminum metal layer same in material with the shell 21, that is, the conductive contact piece 221 is a conventional copper-aluminum composite plate structure, which avoids direct contact between copper and aluminum, and instead becomes indirect contact between the grounding piece 32 and the conductive contact piece 221 of the same material, and indirect contact between the shell 21 and the conductive contact piece 221 of the same material, that is, copper-copper and aluminum-aluminum indirect contact, thereby reducing the contact resistance of the contact surface between the grounding piece 32 and the shell 21, effectively avoiding the problem that when the current flows to the ground through the shell 21, more heat is generated, causing the grounding structure to be fused, thereby causing an electric shock accident, and effectively preventing oxidation reaction of the grounding piece 32 and the shell 21 due to contact of different metals, thereby maintaining long-term grounding continuity, so that the bus duct plug-in device 100 has the characteristics of reliable grounding and long-term stable grounding.

[0050] In some embodiments, the bus duct plug-in device 100 further comprises a pressing piece 223 having elastic properties, and the pressing piece 223 acts on the grounding piece 32 or the conductive contact piece 221, so that the conductive contact piece 221 is tightly pressed against the shell 21. Wherein, through the elastic properties of the pressing piece 223, when the plug-in box 30 is plugged into the plug-in box 1, the pressing piece 223 can elastically act on the grounding piece 32 or the conductive contact piece 221, so that the conductive contact piece 221 is tightly pressed against the shell 21, so as to improve the pressure bonding force of the grounding piece 32 and the shell 21, so that the electrical connection is reliable and stable.

[0051] In some embodiments, as Figures 11 to 13As shown, the grounding member 32 is at least partially a soft deformable structure, which can be an elastomer structure or a flexible structure, and is not particularly limited here. The conductive contact member 221 is connected to the grounding member 32, and the pressing member 223 is elastically arranged on the plug-in box 30, and the pressing member 223 is arranged on the side of the grounding member 32 away from the conductive contact member 221. It can be understood that when the plug-in box 30 is installed on the plug-in box 1, one end of the grounding member 32 of the plug-in box 30 fixed with the conductive contact member 221 is pressed against the shell 21. Since the pressing member 223 is elastically arranged on the plug-in box 30, and the pressing member 223 is arranged on the side of the grounding member 32 away from the conductive contact member 221, the pressing member 223 has a certain elastic stroke, and since the grounding member 32 is at least partially a soft deformable structure, it has a certain deformation performance, thereby providing a continuous elastic pressing force by the pressing member 223, and combining with the self-adaptive deformation ability of the soft grounding member 32, the pressing force between the grounding member 32 and the shell 21 can be increased, so that the electrical connection structure is reliable and stable, and at the same time, the error gap of the installation of the plug-in box 30 and the plug-in box 1 can be compensated.

[0052] Specifically in the embodiment, the grounding member 32 comprises a fixed segment 321, a connecting segment 322 and a pressing segment 323; the fixed segment 321 is connected with the plug-in box 30, the pressing segment 323 has a long end 324 and a short end 325 connected with the long end 324, the long end 324 is movably arranged in the plug-in box 30, the short end 325 is located outside the plug-in box 30 and connected with the conductive contact 221, and the pressing member 223 is arranged on the side of the short end 325 away from the conductive contact 221, the connecting segment 322 is a soft deformable structure, and the fixed segment 321 is connected with the long end 324 through the connecting segment 322. It should be noted that the fixed segment 321, the connecting segment 322 and the pressing segment 323 are parts at different positions of the grounding member 32, and the grounding member 32 as a whole is a copper bar structure, wherein the fixed segment 321 and the pressing segment 323 are rigid copper bar structures, and the connecting segment 322 is a soft deformable copper bar structure. Specifically, the connecting segment 322 can be formed into a bar body by extrusion of a plurality of bendable and deformable thin copper bars, but still has good deformation ability, so that the connecting segment 322 is a soft deformable structure. Specifically, the fixed segment 321 is a straight segment, which is arranged transversely in the interior of the plug-in box 30, the connecting segment 322 is independently movable relative to the plug-in box 30, and the connecting segment 322 is normally inclined to the side away from the shell 21 relative to the plug-in box 30, so that the lower side of the connecting segment 322 and the surface of the plug-in box 30 have sufficient deformation space, facilitating adaptive deformation of the connecting segment 322 according to actual conditions, and the pressing segment 323 has an overall L-shaped structure, the plug-in box 30 is provided with a through plug hole, the long end 324 of the pressing segment 323 is movably arranged in the plug hole and extends towards the outside of the plug-in box 30, and the short end 325 of the pressing segment 323 is located outside the plug-in box 30 and connected with the conductive contact 221. Therefore, the fixed segment 321, the connecting segment 322 and the pressing segment 323 are connected to form a structure similar to a Z-shaped structure. The connecting segment 322 is a soft deformable structure, which can provide a certain stroke space for the pressing segment 323 relative to the plug-in box 30. Through the elastic property of the pressing member 223, the conductive contact 221 at the short end 325 of the pressing segment 323 can be tightly contacted with the shell 21, so that the electrical connection structure is reliable and stable, and the machining precision required by the traditional rigid connection of the components can be reduced, the production process requirement is reduced, thereby reducing the production cost and the scrap rate.

[0053] In further embodiments, as Figure 11As shown, the pressing member 223 includes a fixing post 2231 and a first elastic member 2232. The fixing post 2231 is connected to the plug-in box 30 via the first elastic member 2232. Specifically, the plug-in box 30 is provided with a stepped square hole. The fixing post 2231 is a square post adapted to fit the stepped square hole and is slidably disposed within the stepped square hole. A groove is defined at the top of the fixing post 2231. The first elastic member 2232, such as a spring, is positioned within the groove. A cover is installed above the spring. Under the action of the spring, the fixing post 2231 can generate elastic properties to support the short end 325 of the pressing section 323, thereby ensuring that the conductive contact 221 at the short end 325 of the pressing section 323 is in close contact with the housing 21.

[0054] In a further embodiment, Figures 8 to 10 As shown, the grounding member 32 and the conductive contact member 221 are both sheet-like structures, so that the grounding member 32 is in surface contact with the conductive contact member 221, and the conductive contact member 221 is also in surface contact with the housing 21, which can increase the effective contact area and convert unstable point contact or line contact into stable surface contact.

[0055] In other embodiments, Figure 9As shown, the conductive contact 221 is provided with two, two of the conductive contact 221 are oppositely arranged on the shell 21; the side of two of the conductive contact 221 facing each other is the first metal layer 2211, the side facing away is the second metal layer 2212, and the first end of two of the conductive contact 221 is vertically arranged on the shell 21 and cooperates to form an interface slot, the second end of two of the conductive contact 221 is stacked on the shell 21, when the plug-in box 30 is plugged into the plug-in box 1, the grounding piece 32 is plugged into the interface slot. Specifically, the first metal layer 2211 is specifically a copper metal layer of the same material as the grounding piece 32, and the second metal layer 2212 is an aluminum metal layer of the same material as the shell 21, that is, the conductive contact 221 is a copper-aluminum composite material layer structure, through the first end of two of the conductive contact 221 vertically arranged on the shell 21 and cooperated to form an interface slot, the second end of two of the conductive contact 221 is stacked on the shell 21, that is, the second metal layer 2212 of the second end of one of the conductive contact 221 is in contact with the shell 21, and the first metal layer 2211 of the second end of the conductive contact 221 is in contact with the first metal layer 2211 of the second end of the other conductive contact 221 to be in a stacked state. When the grounding piece 32 is plugged into the interface slot, the grounding piece 32 is in contact with the copper metal layer of the conductive contact 221, and the shell 21 is in contact with the aluminum metal layer of the conductive contact 221, so through the specific structural design of the conductive contact 221, direct contact between copper and aluminum is avoided, and instead becomes indirect contact between copper-copper and aluminum-aluminum, the contact resistance between the grounding piece 32 and the shell 21 is reduced, thereby ensuring the reliability of grounding and the continuity of long-term grounding.

[0056] In some embodiments, as Figure 10As shown, the pressing piece 223 is an elastic piece arranged on the side of the at least one conductive contact piece 221 corresponding to the second metal layer 2212, and elastically presses the first end of the conductive contact piece 221 along the arrangement direction of the two conductive contact pieces 221. It should be understood that the elastic piece elastically presses the first end of the conductive contact piece 221 along the arrangement direction of the two conductive contact pieces 221, so that the elastic piece forms a stroke space for the conductive contact piece 221 to move towards the other conductive contact piece 221, and the space of the interface groove can be deformed according to the shape of the grounding piece 32. Therefore, the two conductive contact pieces 221 can be in close contact with the grounding piece 32 through the limiting of the elastic piece, so that the electrical connection structure is reliable and stable, and the machining precision required by the traditional rigid connection can be reduced, the production process requirement is reduced, and thus the production cost and the waste rate are reduced.

[0057] In some embodiments, as shown in Figure 10 As shown, the grounding piece 32 is in a columnar structure, and the conductive contact piece 221 is in a sheet structure, so that the grounding piece 32 can be smoothly inserted into the interface groove of the conductive contact piece 221. The sheet-shaped conductive contact piece 221 is bent in the middle to form the vertically arranged first end and the second end stacked on the shell 21, and the sheet-shaped conductive contact piece 221 is bent at the position corresponding to the interface groove, so that the two conductive contact pieces 221 form a closed shape at the slot opening position corresponding to the interface groove, further improving the contact stability with the grounding piece 32.

[0058] In some embodiments, as shown in Figure 9 As shown, the edge position of the side of the plug-in box 30 close to the grounding piece 32 is provided with an annular groove 203, and the annular groove 203 is provided with a sealing layer. The plug-in box 1 is provided with an annular flange 116, and when the plug-in box 30 is plugged into the plug-in box 1, the plug-in box 30 is plugged into the annular groove 203 and the annular flange 116, and the sealing layer is extruded to form a sealed connection. Specifically, the sealing layer can be an elastic rubber strip, so that the contact surface between the plug-in box 30 and the plug-in box 1 is sealed when plugged in, and good protection performance can be formed to effectively prevent the entry of liquid or dust.

[0059] In some embodiments, as shown in Figures 1 to 7As shown, the plug-in box 1 comprises a box body 11, a box cover 12 and a movable plate 13; it is to be noted that the plug-in box 1 is installed on the shell 21 at a position corresponding to the conductive contact 222 of the bus duct, and the plug-in base as the power tapping point is used for plug-in connection with the plug-in box 30 to obtain power. The box body 11 is arranged on the shell 21, and the box cover 12 is detachably arranged on the box body 11. The box cover 12 is used for protecting the elements inside the box body 11, and when power is not tapped, the box cover 12 can be covered on the top of the box body 11, so that the box body 11 and the box cover 12 form a closed whole, which is used for protecting the internal structure of the plug-in box 1 and preventing dust and liquid from entering, and the box cover 12 can be locked when it is covered on the box body 11, so as to ensure that the plug-in box 1 can only be opened by fixed personnel and prevent misoperation. The movable plate 13 is located between the box cover 12 and the box body 11; the box body 11 is provided with a plug-in slot 111 for plug-in connection of the plug-in box 30; the movable plate 13 is movably arranged on the box body 11, and the movable plate 13 has a first position and a second position relative to the box body 11; when the movable plate 13 is in the first position, the movable plate 13 shields the plug-in slot 111; when the movable plate 13 is in the second position, the movable plate 13 is staggered relative to the plug-in slot 111, and the plug-in slot 111 is in an exposed state. The conductive contact 222 is arranged on the shell 21 at a position where plug-in connection is required, and is used for contact power of the plug-in box 30 of the tapping unit, wherein the conductive contact 222 is exposed to the shell 21, the box body 11 is detachably arranged on the shell 21, and the connection can be achieved by bolt connection, pin connection, clamping and the like, or the connection can be fixed and cannot be detached, which is not particularly limited. In this embodiment, the box body 11 is detachably arranged on the shell 21, and when the box body 11 is arranged on the shell 21, the conductive contact 222 is inserted into the plug-in slot 111, and the phase pin 31 inside the plug-in box 30 is in reliable electrical contact with the exposed conductive contact 222, so as to complete power distribution.

[0060] Specifically, the box body 11 is provided with a plurality of independently arranged square insertion slots 111 vertically penetrating from the bottom upward, when the insertion box 1 is installed in the shell 21, the busbar slot conductive contacts 222 are located in the insertion slots 111 of the box body 11 and are spaced apart from each other, so as to separate each conductive contact 222 by a sufficient distance to prevent short circuit. Wherein, the movable plate 13 movable relative to the box body 11 is arranged on the box body 11, wherein the box body 11 is a cuboid structure, the insertion slots 111 are arranged along the length direction of the box body 11, the length of the movable plate 13 is matched with the length of the box body 11, but the width of the movable plate 13 is shorter than the width of the box body 11, so that the movable plate 13 can move along the width direction of the box body 11, wherein the difference between the width of the movable plate 13 and the width of the box body 11 should be greater than the width of the insertion slot 111, so that the movable plate 13 can be moved to be staggered with the insertion slot 111 or to block the insertion slot 111, and specifically in the embodiment, the width of the movable plate 13 is half of the width of the box body 11, so that the movable plate 13 has sufficient movement space on the box body 11. By controlling the position of the movable plate 13 relative to the box body 11, the position of the movable plate 13 can be adjusted according to the working state of the busbar slot, when the busbar slot needs to operate normally and the plug-in box 30 needs to be plugged in, at this time, the position of the movable plate 13 is adjusted to the second position, the movable plate 13 is staggered with the insertion slot 111, and the insertion slot 111 is in an exposed state, at this time, each conductive contact 222 on the shell 21 is exposed in the insertion slot 111, the plug-in box 30 is pushed into the square insertion slot 111 of the insertion box 1, the phase line pin 31 inside the plug-in box 30 realizes reliable electrical contact with the exposed conductive contact 222, so as to complete the distribution of electric energy. When the busbar slot operates normally but the plug-in box 30 is not plugged in, the movable plate 13 is adjusted to the first position, the movable plate 13 blocks the insertion slot 111, so as to block the conductive contact 222 from being exposed in the insertion slot 111 of the insertion box 1, effectively avoiding the problem that when the plug-in box 30 is not plugged in, each conductive contact 222 on the shell 21 is exposed in the insertion slot 111, causing the operator to be mistakenly touched by electric shock.

[0061] In some embodiments, as Figure 6 and Figure 7As shown, the box body 11 is provided with a positioning member 14 having elastic properties, and the positioning member 14 is at least partially exposed outside the box body 11 in a normal state, and is retracted into the box body 11 in a retracted state; the movable plate 13 is provided with a first positioning hole 131 and a second positioning hole 132; when the movable plate 13 is in a first position, the first positioning hole 131 is arranged opposite to the positioning member 14, and the positioning member 14 is arranged through the first positioning hole 131 in a normal state; when the movable plate 13 is in a second position, the second positioning hole 132 is arranged opposite to the positioning member 14, and the positioning member 14 is arranged through the second positioning hole 132 in a normal state. Through the arrangement of the first positioning hole 131 and the second positioning hole 132 on the movable plate 13, the two positioning holes and the positioning member 14 can hinder the continuous movement of the movable plate 13 when the movable plate 13 moves to the first position or the second position, so that the movable plate 13 can be accurately moved to a position shielding the slot 111 or a position exposing the slot 111. Understandably, when it is needed to switch the movable plate 13 from the state of shielding the slot 111 to the state of exposing the slot 111, that is, from the first position to the second position, at this time the positioning member 14 is in a normal state and is arranged through the first positioning hole 131 to limit the movement of the movable plate 13, the positioning member 14 is pressed to make the positioning member 14 in a retracted state and retracted into the box body 11, at this time the movable plate 13 can move towards the second position, when it is moved to the position, at this time the positioning member 14 is arranged opposite to the second positioning hole 132, the positioning member 14 restores to a normal state under the elastic action of itself and is arranged through the second positioning hole 132 to limit the movement of the movable plate 13, and the movable plate 13 can be reversely moved by pressing the positioning member 14 when the movable plate 13 is moved from the second position to the first position, so that the movable plate 13 can be accurately moved to a position shielding the slot 111 or a position exposing the slot 111, and a position indication is formed.

[0062] In some embodiments, as Figure 6 As shown, the first positioning hole 131 and the second positioning hole 132 are communicated, and a communication passage 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 communication passage 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 similar to a dumbbell or a racetrack through the communication passage 133, and the diameter or the widest dimension of the positioning member 14 is greater than the width of the communication passage 133 connecting the two positioning holes, so that the positioning member 14 will not slide out of the communication passage 133 in a normal positioning state to affect the limiting effect of the positioning holes on the positioning member 14, and smooth transition of the positioning member 14 between the two positioning holes can be achieved, and the smoothness of the position switching of the movable plate 13 is improved.

[0063] In some embodiments, as shown in Figure 7 the box 11 is provided with a receiving groove 112; the positioning member 14 comprises a positioning column 141 and a second elastic member 142, the positioning column 141 is slidably arranged in the receiving groove 112, and the positioning column 141 is connected with the box 11 through the second elastic member 142. Wherein, the top of the box 11 is vertically provided with a non-through receiving groove 112, the positioning column 141 is closely slidably matched with the receiving groove 112, so that the positioning column 141 can be linearly orientedly slid along the receiving groove 112, effectively avoiding the position from being deflected during the movement, and even if the movable plate 13 applies a non-completely vertical lateral force to the positioning column 141, the receiving groove 112 can effectively resist the lateral force to prevent the positioning column 141 from being bent or stuck. One end of the second elastic member 142, such as a spring, abuts against the bottom of the receiving groove 112, and the other end abuts against the bottom of the positioning column 141, and the positioning column 141 is driven to be orientedly slid in the receiving groove 112 through the compression or expansion of the spring. Specifically, in the embodiment, the bottom of the positioning column 141 is provided with a placing groove, and one end of the spring is accommodated in the placing groove and connected with the bottom of the placing groove, so as to further ensure the directional compression or expansion of the spring.

[0064] In some embodiments, as shown in Figure 4 the box 11 is provided with a guide groove 113; the movable plate 13 is provided with a guide member 134 on the side close to the box 11, and the guide member 134 is slidably arranged in the guide groove 113; or, the box 11 is provided with a guide member 134; the movable plate 13 is provided with a guide groove 113 on the side close to the box 11, and the guide member 134 is slidably arranged in the guide groove 113. Wherein, the box 11 and the movable plate 13 are slidably matched through the guide member 134 and the guide groove 113, so that the movable plate 13 can be orientedly linearly slid to the first position or the second position. Specifically, the guide groove 113 is formed on the box 11 or the movable plate 13, and the guide member 134, such as a sliding block, a rib or a shaft sleeve, which is matched with the guide groove 113 in shape, is arranged on the movable plate 13 or the box 11, the guide member 134 is embedded in the guide groove 113, and there is a precise gap between the guide member 134 and the guide groove 113, that is, the sliding is smooth but the shaking is limited, so that the movable plate 13 is orientedly slid to the first position or the second position, and the accuracy of the movement is improved. Specifically, the guide member 134 can be provided with a plurality of guide members 134 according to the needs, and the number of the guide grooves 113 corresponding to the guide members 134 is specifically limited here.

[0065] In some embodiments, as shown in Figure 4As shown, the plug-in box 1 further comprises a panel 15 provided with a through hole matched with the plug-in slot 111; the panel 15 is detachably arranged on the box body 11, and the movable plate 13 is arranged between the panel 15 and the box body 11. Wherein, by arranging the panel 15 on the surface of the movable plate 13, the panel 15 can be clamped on the box body 11 through buckling structure or the like, which is convenient for disassembly; the shape of the panel 15 is matched with the shape of the box body 11, so that the panel 15 can cover the entire surface of the box body 11, only the position of the plug-in slot 111 is exposed, and other positions are covered in the panel 15; it should be noted that the panel 15 also forms a gap at the position corresponding to the two positioning holes and the communication channel 133, so as to facilitate the operator to intuitively observe the position of the movable plate 13; on the one hand, the panel 15 can form a better protection effect when the box cover 12 is opened, and on the other hand, it can also improve the aesthetic appearance.

[0066] In some embodiments, as shown in 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 box cover 12 is provided with a rotating shaft 121, the rotating shaft 121 is rotatably inserted into the rotating hole 114, and one side of the rotating shaft 121 forms an inclined surface 122; the box cover 12 is slidably detached or assembled on the box body 11 along the extension direction of the inclined surface 122. Specifically, the opposite sides of one end of the box body 11 are both provided with the rotating hole 114, and the opposite sides of one end of the box cover 12 outwardly protrude to form mounting portions, and the opposite sides of the two mounting portions are both provided with the rotating shaft 121, so that the box cover 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 box cover 12 can freely rotate around the axis of the rotating shaft 121 to switch from the closed state to the open state. And by forming the inclined surface 122 on one side of the rotating shaft 121, specifically, the outer wall of the rotating shaft 121 close to the outer surface of the box cover 12 forms the inclined surface 122 structure, so that when the box cover 12 is rotated to a certain angle relative to the box body 11, such as 45°, by applying force to the box cover 12 along the extension direction of the inclined surface 122, the box cover 12 can be quickly detached from or assembled on the box body 11 to form a quick release structure.

[0067] In some embodiments, as shown in Figure 3 and Figure 4As shown, the box cover 12 is provided with a first locking hole 123, the box body 11 is provided with a second locking hole 115, and the box cover 12 is connected to the first locking hole 123 and the second locking hole 115 in sequence by a locking member to be locked with the box body 11. Specifically, the first locking hole 123 can be arranged at the end of the box cover 12 away from the rotating shaft 121, the second locking hole 115 can be arranged at the end of the box body 11 away from the rotating hole 114, and the two locking holes can be locked by a locking member such as a conventional lock. Understandably, when the box cover 12 is covered on the box body 11, the box body 11 and the box cover 12 form a closed whole, which is used to protect the internal structure of the plug-in box 1 and prevent dust and liquid from entering, and the box cover 12 can be locked with the box body 11 by the locking member when it is covered on the box body 11, so as to ensure that the plug-in box 1 can only be opened by fixed personnel and prevent misoperation. In addition, the box cover 12 can be further fixed with the box body 11 by screwing or threaded connection of a screw or a bolt, so as to further improve the stability of the cover.

[0068] The above embodiments are not exhaustive enumeration based on the present application, and there can be other unlisted embodiments. Any replacement and improvement made without violating the concept of the present application is within the protection scope of the present application.

Claims

1. A busway plug-in device, characterized by, The bus duct plug-in device comprises a plug box, a plug-in box and a conductive contact; the plug box is used for being assembled on the shell of the bus duct; the plug-in box is provided with a grounding piece; the conductive contact is arranged on the grounding piece or the shell; when the plug-in box is plugged into the plug box, the grounding piece is abutted against the shell through the conductive contact; One side of the conductive contact in contact with the grounding piece is a first metal layer with the same material as the grounding piece, and the other side of the conductive contact in contact with the shell is a second metal layer with the same material as the shell, and the first metal layer and the second metal layer are different metals.

2. The busway plug-in assembly of claim 1, wherein, The bus duct plug-in device further comprises a pressing piece with elastic performance; when the plug-in box is plugged into the plug box, the pressing piece acts on the grounding piece or the conductive contact, so that the conductive contact is tightly abutted against the shell.

3. The busway plug-in assembly of claim 2, wherein, The grounding piece is at least partially in a soft and deformable structure, the conductive contact is connected with the grounding piece, the pressing piece is elastically arranged on the plug-in box, and the pressing piece is arranged on the side of the grounding piece away from the conductive contact.

4. The busway plug-in assembly of claim 3, wherein, The grounding piece comprises a fixed segment, a pressing segment and a connecting segment; the fixed segment is connected with the plug-in box, the pressing segment has a long end and a short end connected with the long end, the long end is movably arranged in the plug-in box, the short end is located outside the plug-in box and connected with the conductive contact, and the pressing piece is arranged on the side of the short end away from the conductive contact, the connecting segment is a soft and deformable structure, and the fixed segment is connected with the long end through the connecting segment; And / or, the pressing piece comprises a fixed column and a first elastic piece, and the fixed column is connected with the plug-in box through the first elastic piece; And / or, the grounding piece and the conductive contact are both in a sheet structure.

5. The busway plug-in assembly of claim 2, wherein, The conductive contact is provided with two, and the two conductive contacts are oppositely arranged on the shell; one side of the two conductive contacts is the first metal layer, and the other side is the second metal layer, and the first ends of the two conductive contacts are vertically arranged on the shell and cooperatively form an interface groove, and the second ends of the two conductive contacts are arranged on the shell, and the grounding piece is plugged into the interface groove when the plug-in box is plugged into the plug box.

6. The busway plug-in assembly of claim 5, wherein, The pressing piece is an elastic sheet arranged on the side of at least one conductive contact corresponding to the second metal layer, and the elastic sheet is elastically pressed on the first end of the conductive contact along the arrangement direction of the two conductive contacts; And / or, the grounding piece is in a columnar structure, and the conductive contact is in a sheet structure.

7. The busway plug-in assembly of any one of claims 1-6, wherein, The first metal layer is a copper layer, and the second metal layer is an aluminum layer; And / or, the edge position of the side of the plug-in box close to the grounding piece is provided with an annular groove, the annular groove is provided with a sealing layer, the plug box is provided with an annular flange, and the plug-in box is plugged into the plug box through the annular groove and the annular flange, and the sealing layer is extruded to form a sealed connection.

8. The busway plug-in assembly of any one of claims 1-6, wherein, The plug box comprises a box body, a box cover and a movable plate; The box body is arranged on the shell, the box cover is detachably arranged on the box body, and the movable plate is located between the box cover and the box body; the box body is provided with a slot for plugging the box; the movable plate is movably arranged on the box body, and the movable plate has a first position and a second position relative to the box body; when the movable plate is in the first position, the movable plate blocks the slot; when the movable plate is in the second position, the movable plate is offset relative to the slot, and the slot is in an exposed state.

9. The busway plug-in assembly of claim 8, wherein, The box body is provided with a positioning member having elastic properties, and the positioning member is at least partially exposed to the box body in a normal state, and is retracted into the box body in a retracted state; the movable plate is provided with a first positioning hole and a second positioning hole; when the movable plate is in the first position, the first positioning hole is arranged opposite the positioning member, and the positioning member is arranged in the first positioning hole in the normal state; when the movable plate is in the second position, the second positioning hole is arranged opposite the positioning member, and the positioning member is arranged in the second positioning hole in the normal state.

10. The busway plug-in assembly of claim 9, wherein, The first positioning hole and the second positioning hole are communicatively arranged, and a communication 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 communication 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; And / or, the box body is provided with a receiving groove; the positioning member includes a positioning column and a second elastic member, the positioning column is slidably arranged in the receiving groove, and the positioning column is connected to the box body by the second elastic member.

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