Plug of bus duct, bus duct and elbow of bus duct

Abstract

The bus duct (1) is provided with a plurality of conductors (20), the plug (40) is arranged at the end part of the bus duct (1), the plug (40) is made of an insulating material and is integrally constructed into a block-shaped component, the plug (40) is provided with a plurality of jacks (41) for the conductors (20) to pass through, the plurality of jacks (41) penetrate through in the width direction (D12) of the plug (40), and the conductors (20) are inserted into the jacks (41) in the width direction (D12) of the plug (40). The plurality of grooves are arranged side by side in the length direction (D11) of the plug (40). By means of the insulating plugs, on one hand, plugging can be formed at the ends of the bus duct, a conductor is allowed to pass through, the plugs are insulated, and electric leakage of the conductor can be avoided; on the other hand, the plug is an integral component, and compared with an existing end socket formed by splicing a plurality of plate-shaped pieces, the plug has the advantages of being simple in structure, convenient to produce and manufacture, low in production and manufacturing cost and the like, the assembly steps of the bus duct can be simplified, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a plug of a bus duct, a bus duct and an elbow of the bus duct. Background Art

[0002] The bus duct is a highly efficient power distribution device used to distribute high power to various components of a distributed system. In indoor low-voltage power transmission trunk line projects, it has increasingly replaced wires and cables, and the plug-in box has the function of distributing electrical energy and is widely used in the bus duct. The bus duct includes an outer shell and conductors of different phase lines arranged in the outer shell. The outer shell has an end opening in the length direction of the bus duct. Generally, a head is used to seal the end opening, while allowing the conductor to pass through. The existing head is composed of multiple plate-like parts such as side plates, end plates, top plates, and bottom plates, which results in a complex structure of the head, a cumbersome assembly process, and a high production cost.

[0003] Therefore, a bus duct plug, a bus duct and a bus duct elbow are needed to at least partially solve the above problems. Utility Model Content

[0004] The content of the utility model introduces a series of simplified concepts, which will be further described in detail in the detailed implementation section. The content of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above-mentioned problems, the first aspect of the utility model provides a plug for a bus duct, wherein the bus duct is provided with a plurality of conductors, and the plug is arranged at the end of the bus duct, and the plug is made of insulating material and is integrally constructed as a block-shaped component, and the plug is provided with a plurality of sockets for the conductors to pass through, and the plurality of sockets penetrate in the width direction of the plug and are arranged side by side in the length direction of the plug.

[0006] According to this solution, with the help of an insulating plug, on the one hand, a plug can be formed at the end of the bus duct, allowing the conductor to pass through and the plug itself is insulated, which can prevent leakage of the conductor; on the other hand, the plug is a whole component. Compared with the existing plug composed of multiple plate-like parts, this solution has the advantages of simple structure, easy production and manufacturing, and low production cost. It can simplify the assembly steps of the bus duct and improve assembly efficiency.

[0007] Optionally, the multiple conductors include a phase conductor, a neutral conductor and a protective conductor, and the jack includes a first jack for the phase conductor and the neutral conductor to pass through and a second jack for the protective conductor to pass through, and the first jack and the second jack have different sizes in at least the height direction.

[0008] According to this solution, it can be applicable to protective conductors with cross-sectional sizes different from those of phase conductors and neutral conductors, making the application environment of the plug more targeted.

[0009] Optionally, a dimension of the first socket in a height direction is greater than a dimension of the second socket in a height direction.

[0010] According to this solution, it can be applied to the situation where the cross-sectional dimensions of the phase conductor and the neutral conductor are larger than the cross-sectional dimension of the protective conductor, so that the application environment of the plug is more targeted.

[0011] Optionally, the plug has a side extending into the plug and is provided with a plurality of first grooves recessed from the side extending into the plug, the first groove corresponds to the first insertion hole, the first insertion hole passes through the bottom surface of the first groove, and the hole wall of the first insertion hole is spaced apart from the groove side wall of the first groove.

[0012] According to this solution, the insulating component on the conductor can be accommodated in the first groove but is blocked on the insertion side of the plug due to the bottom surface of the first groove and does not extend from the plug through the first plug hole; the insulating plug and the insulating component work together to prevent leakage of the conductor.

[0013] Optionally, the plug has an extending side and is provided with a peripheral wall and / or a fixing portion protruding from the extending side, the peripheral wall extends at the top of the plug and at both ends in the length direction, and the fixing portion is located on the lower side of the second socket and is provided with a through hole for a fastener to pass through.

[0014] According to this solution, the outer peripheral wall can abut against the outer shell of the bus duct, and the lower cover of the bus duct is located between the two bottoms of the outer peripheral wall and abuts against the extended side of the plug, so that a tight structure can be better formed at the end of the bus duct, with a neat external shape and good sealing. The protective conductor can be connected to the fixing part with fasteners such as screws to fix the protective conductor.

[0015] Optionally, the jack is a rectangular hole arranged along the height direction of the plug.

[0016] According to this solution, it is better suitable for conductors with rectangular cross-sections to better limit the position of the conductors and prevent the conductors from shaking.

[0017] Optionally, four corners of the plug are provided with fixing holes for fasteners to pass through so as to fix the plug.

[0018] According to this solution, the four corners of the plug can be fixed to the shell, the fixing method is simple and easy to assemble, and the fixing structure is simple and easy to produce.

[0019] Optionally, the plug is provided with a step on the end face in the length direction, and the step has an upward step surface.

[0020] According to this solution, the plug can be applied to a busbar duct in which the shell has a protruding portion for clamping, and the step corresponds to the position of the protruding portion in the height direction, so that the plug can better abut against the shell at the step and the sealing effect is better.

[0021] The plug has a protruding side surface and is provided with a plurality of second grooves recessed from the protruding side surface. The second grooves extend along the height direction and are located between adjacent insertion holes.

[0022] According to this solution, the weight of the plug can be reduced, and the amount of material used to manufacture the plug can be reduced, which is beneficial to the lightweighting of the bus duct and reduces the material cost of the bus duct.

[0023] According to another aspect of the utility model, a bus duct is provided, which includes an outer shell, a plurality of conductors arranged in the outer shell and a plug according to any of the above aspects, wherein the outer shell has end openings at both ends of the length direction of the bus duct, the plugs seal the end openings, and the conductors extend from the jacks.

[0024] According to another aspect of the utility model, an elbow of a bus duct is provided, the elbow comprising a shell, a plurality of conductors arranged in the shell and a plug according to any of the above aspects, the shell is constructed as a component with corners and has end openings at both ends of its own length direction, the plug blocks the end openings, and the conductors extend from the jack.

[0025] Optionally, the portion of the conductor located within the housing is sheathed with a thermoplastic sleeve.

[0026] According to this solution, the electrical clearance and creepage distance between conductors can be guaranteed, and the protection level of the elbow can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention.

[0028] In the attached figure:

[0029] Figure 1 It is a three-dimensional diagram of a bus duct according to the utility model;

[0030] Figure 2 for Figure 1 A perspective view of an end portion of a bus duct shown in FIG.

[0031] Figure 3 for Figure 1A perspective view of an end portion of a bus duct shown in , with the plug removed;

[0032] Figure 4 for Figure 1 A perspective view of the plug shown in ;

[0033] Figure 5 for Figure 1 Another perspective view of the plug shown in ;

[0034] Figure 6 is a three-dimensional diagram of an elbow according to the utility model;

[0035] Figure 7 for Figure 6 Another perspective view of the elbow shown in , with the lower cover removed;

[0036] Figure 8 for Figure 6 A perspective view of the housing shown in ;

[0037] Fig. 9 For thermoplastic sleeve Figure 6 Schematic side view of a single conductor shown in .

[0038] Description of reference numerals:

[0039] 1 Bus duct

[0040] 2 Elbow

[0041] 10 Shell

[0042] 11 end opening

[0043] 12 bottom opening

[0044] 13 Bracket

[0045] 14 storage slots

[0046] 15 Raised part

[0047] 16 mounting holes

[0048] 20 conductors

[0049] 21-phase conductor

[0050] 22 Neutral conductor

[0051] 23 Protective conductor

[0052] 31 Lower cover

[0053] 32 Insulation components

[0054] 33 Fasteners

[0055] 40 plug

[0056] 41 jack

[0057] 42 First Jack

[0058] 43 Second jack

[0059] 44 Extend into the side

[0060] 45 Extend to the side

[0061] 46 First groove

[0062] 47 Outer wall

[0063] 48 fixed part

[0064] 49 through holes

[0065] 50 end face

[0066] 51 steps

[0067] 52 step surface

[0068] 53 fixing holes

[0069] 54 Concave platform

[0070] 55 Second groove

[0071] 60 Thermoplastic Sleeve DETAILED DESCRIPTION

[0072] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0073] In order to thoroughly understand the present invention, a detailed description will be provided in the following description. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0075] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0076] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0077] Now, exemplary embodiments according to the present utility model will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0078] like Figures 1 to 3 As shown, the utility model provides a bus duct 1, which can be a straight-through bus duct, such as a slide rail straight-through bus duct. The bus duct 1 includes a shell 10, a plurality of conductors 20, a lower cover plate 31 and a plug 40. The shell 10 is long and has end openings 11 at both ends of the length direction of the bus duct 1. The plurality of conductors 20 are arranged in the shell 10 and extend beyond the end openings 11 of the shell 10. The plurality of conductors 20 may, for example, include a phase conductor 21 (L), a neutral conductor 22 (N) and a protective conductor 23 (PE). The number of phase conductors 21 may be three, with one neutral conductor 22 and one protective conductor 23. Optionally, these conductors 20 may all be copper conductors 20. The bottom side of the shell 10 has a bottom opening 12, and the lower cover plate 31 can cover the bottom opening 12. The plugs 40 are disposed at two ends of the bus duct 1 in the length direction. Specifically, the plugs 40 are connected to the housing 10 and can seal the end opening 11 of the housing 10 , and the plurality of conductors 20 pass through the plugs 40 .

[0079] The plug 40 is made of insulating material, such as plastic material. Figure 4 As shown, the plug 40 is integrally constructed as a block-shaped component, which has a length direction, a width direction and a height direction, which are represented by D11, D12, and D13, respectively. In this article, the width direction D12 of the plug 40 corresponds to the length direction of the bus duct 1 or the housing 10; the length direction D11 of the plug 40 corresponds to the width direction of the bus duct 1 or the housing 10; the height direction D13 of the plug 40 is consistent with the height direction of the bus duct 1 or the housing 10. The plug 40 is provided with a plurality of sockets 41 for the conductors 20 to pass through. The plurality of sockets 41 penetrate the plug 40 in the width direction D12 and are arranged side by side in the length direction D11 of the plug 40. Each conductor 20 corresponds to a socket 41, that is, the number of sockets 41 is related to the number of conductors 20, and the number of the two is equal.

[0080] With the help of the insulating plug 40, on the one hand, a seal can be formed at the end of the bus duct 1, allowing the conductor 20 to pass through and the plug 40 itself is insulated, which can prevent the conductor 20 from leaking. On the other hand, the plug 40 is a whole component. Compared with the existing plug composed of multiple plate-like parts, this solution has the advantages of simple structure, easy production and manufacturing, and low production cost. It can simplify the assembly steps of the bus duct 1 and improve assembly efficiency.

[0081] The shape of the plug hole 41 is configured to match the cross-sectional shape of the conductor 20. For example, the cross-sectional shape of the conductor 20 is rectangular, and correspondingly, the shape of the plug hole 41 is also rectangular. Further, the plug hole 41 is a rectangular hole arranged along the height direction D13. Such a configuration is better suitable for the conductor 20 with a rectangular cross section, so as to better limit the position of the conductor 20 and prevent the conductor 20 from shaking.

[0082] Typically, the cross-sectional dimensions of the phase conductor 21 and the neutral conductor 22 in at least the height direction are different from the cross-sectional dimensions of the protective conductor 23, and thus, the jack 41 herein includes a first jack 42 for the phase conductor 21 and the neutral conductor 22 to pass through and a second jack 43 for the protective conductor 23 to pass through. For the illustrated embodiment, the number of the first jacks 42 is three, and the number of the second jacks 43 is one. The first jack 42 and the second jack 43 have different dimensions in at least the height direction D13. Optionally, the cross-sectional dimensions of the phase conductor 21 and the neutral conductor 22 in the height direction are greater than the cross-sectional dimensions of the protective conductor 23, so that the dimension of the first jack 42 in the height direction D13 is greater than the dimension of the second jack 43 in the height direction D13.

[0083] Return to see Figure 3, a bracket portion 13 with a receiving groove 14 is provided in the housing 10, and the conductor 20 is located in the receiving groove 14 and supported by the bottom wall of the receiving groove 14, wherein the bottom wall has an opening. The phase conductor 21 and the neutral conductor 22 are respectively sleeved with an insulating member 32 with a bottom opening 12. The bus duct 1 also needs to use a plug-in box to distribute electric energy, and the pins of the plug-in box can be inserted through the opening of the bottom wall and the bottom opening 12 of the insulating member 32, and then contact and connect with the conductor 20. One receiving groove 14 corresponds to one conductor 20 and one insulating member 32. The conductor 20 and the insulating member 32 both extend from the receiving groove 14 in the length direction of the housing 10, and then the conductor 20 extends from the plug hole 41 of the plug 40, while the insulating member 32 is located on the extending side of the plug 40 facing the housing 10, and does not extend from the plug 40.

[0084] The plug 40 has an inward side surface 44 and an outward side surface 45 which are arranged opposite to each other. Specifically, the conductor 20 is inserted into the insertion hole 41 from the inward side surface 44, and the conductor 20 is inserted into the insertion hole 41 from the outward side surface 45. The inward side surface 44 faces the housing 10, and the outward side surface 45 faces away from the housing 10. In order to further improve safety, Figure 5 As shown, the plug 40 is provided with a plurality of first grooves 46 recessed from the protruding side surface 44, and the first grooves 46 correspond to the first plug holes 42, for example, one first groove 46 corresponds to one first plug hole 42. The first plug hole 42 penetrates from the bottom surface of the first groove 46, and the hole wall of the first plug hole 42 is spaced apart from the groove side wall of the first groove 46. In this arrangement, the insulating member 32 can be accommodated in the first groove 46 but is blocked on the protruding side of the plug 40 due to the bottom surface of the first groove 46, and does not extend from the plug 40 through the first plug hole 42. At the end of the bus duct 1, the insulating plug 40 and the insulating member 32 work together to prevent the conductor 20 from leaking electricity.

[0085] Return to see Figure 3 , the lower cover plate 31 extends from the end opening 11 of the housing 10. In order to make the structure compact, Figure 5 As shown, the plug 40 is also provided with an outer peripheral wall 47 protruding from the protruding side surface 44, specifically, the outer peripheral wall 47 protrudes toward the housing 10. The outer peripheral wall 47 extends at the top of the plug 40 and at both ends in the length direction D11. The outer peripheral wall 47 can abut against the housing 10, and the lower cover plate 31 is located between the two bottoms of the outer peripheral wall 47 and abuts against the protruding side surface 44 of the plug 40. In this way, a tight structure can be better formed at the end of the bus duct 1, and the external shape is neat and the sealing performance is good.

[0086] The plug 40 is also provided with a fixing portion 48 protruding from the protruding side surface 44, and specifically, the fixing portion 48 protrudes toward the housing 10. The fixing portion 48 is located at the lower side of the second insertion hole 43 and is provided with a through hole 49 for a fastener to pass through. The protective conductor 23 can be connected to the fixing portion 48 with a fastener such as a screw to fix the protective conductor 23.

[0087] In order to realize the locking connection between the bus duct 1 and the plug-in box, the plug-in box is provided with a movable locking foot, and the two side walls of the housing 10 in the width direction thereof are provided with a protruding portion 15 protruding outward. The protruding portion 15 can be engaged with the locking foot. In order to make the external structure of the bus duct 1 neat and the closure at the end, the plug 40 is provided with a step 51 on the end face 50 in the length direction D11, and the step 51 has an upward step surface 52. The step 51 corresponds to the position of the protruding portion 15 in the height direction D13, so that the plug 40 can better abut against the housing 10 at the step 51, and the sealing effect is better.

[0088] like Figure 4 As shown, the four corners of the plug 40 are provided with fixing holes 53 for the fasteners 33 to pass through, so as to fix the plug 40. Correspondingly, the four corners of the housing 10 are provided with mounting holes 16 for fixing the fasteners 33. Schematically, the four corners of the plug 40 are provided with concave platforms 54, and the fixing holes 53 are located on the concave and convex. Specifically, fasteners 33 such as screws can be used to first pass through the fixing holes 53 of the plug 40, and then tightened into the mounting holes 16 of the housing 10, so that the four corners of the plug 40 can be fixed to the housing 10. The plug 40 is also provided with a plurality of second grooves 55 recessed from the protruding side 45, and the second grooves 55 extend along the height direction D13 and are located between adjacent jacks 41. The weight of the plug 40 can be reduced, and the amount of manufacturing material of the plug 40 can be reduced, which is conducive to the lightweight of the bus duct 1 and reduces the material cost of the bus duct 1.

[0089] like Figures 6 to 8 As shown, the utility model also provides an elbow 2 of a bus duct 1, and the bending angle of the elbow 2 is not limited, for example, it can be 90 degrees, and it can also be said that the elbow 2 is an L-shaped elbow. The elbow 2 includes an outer shell 10, a plurality of conductors 20 arranged in the outer shell 10, a lower cover plate 31 and a plug 40. The outer shell 10 is configured as a component with a corner, and correspondingly, the lower cover plate 31 is also configured as a component with a corner. The outer shell 10 has end openings 11 at both ends of its own length direction, and the plug 40 can block the end openings 11. The lower cover plate 31 can cover the bottom opening 12 of the outer shell 10. The outer shell 10 of the elbow 2 is basically the same as the outer shell 10 of the bus duct 1 in cross-sectional shape, except that the bracket portion 13 is not provided in the outer shell 10. For the sake of brevity, the structure of the elbow 2 that is the same as the above-mentioned bus duct 1 is not repeated in this article.

[0090] like Figure 7 As shown, a plurality of conductors 20 are spaced apart inside the housing 10, and there is a space between adjacent conductors 20. The conductors 20 are supported by plugs 40 at both ends of the elbow 2. Fig. 9As shown, the portion of the conductor 20 located in the housing 10 is sheathed with a thermoplastic sleeve 60 to ensure the electrical clearance and creepage distance between the conductors 20 and improve the protection level of the elbow 2.

[0091] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0092] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and explanation, and the present invention is not limited to the above-mentioned embodiments. According to the teachings of the present invention, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present invention.

Claims

1. A plug for a bus duct, wherein the bus duct (1) is provided with a plurality of conductors (20), and the plug (40) is arranged at an end of the bus duct (1), characterized in that: The plug (40) is made of insulating material and is integrally constructed as a block-shaped component. The plug (40) is provided with a plurality of insertion holes (41) for the conductor (20) to pass through. The plurality of insertion holes (41) penetrate the plug (40) in a width direction (D12) and are arranged side by side in a length direction (D11) of the plug (40).

2. The plug according to claim 1, characterized in that: The plurality of conductors (20) include a phase conductor (21), a neutral conductor (22) and a protective conductor (23); the insertion hole (41) includes a first insertion hole (42) for the phase conductor (21) and the neutral conductor (22) to pass through, and a second insertion hole (43) for the protective conductor (23) to pass through; the first insertion hole (42) and the second insertion hole (43) have different sizes in at least a height direction (D13).

3. The plug according to claim 2, characterized in that: The dimension of the first plug hole (42) in the height direction (D13) is greater than the dimension of the second plug hole (43) in the height direction (D13).

4. The plug according to claim 2, characterized in that: The plug (40) has an extending side surface (44) and is provided with a plurality of first grooves (46) recessed from the extending side surface (44), the first grooves (46) corresponding to the first insertion holes (42), the first insertion holes (42) passing through the bottom surface of the first grooves (46), and the hole wall of the first insertion hole (42) is spaced apart from the groove side wall of the first groove (46).

5. The plug according to claim 2, characterized in that: The plug (40) has an extending side surface (44) and is provided with an outer peripheral wall (47) and / or a fixing portion (48) protruding from the extending side surface (44), the outer peripheral wall (47) extending at the top of the plug (40) and at both ends in the length direction (D11), and the fixing portion (48) is located at the lower side of the second insertion hole (43) and is provided with a through hole (49) for a fastener to pass through.

6. The plug according to any one of claims 1 to 5, characterized in that: The insertion hole (41) is a rectangular hole arranged along the height direction (D13) of the plug (40).

7. The plug according to any one of claims 1 to 5, characterized in that: The four corners of the plug (40) are provided with fixing holes (53) for fasteners (33) to pass through, so as to fix the plug (40).

8. The plug according to any one of claims 1 to 5, characterized in that: The end surface (50) of the plug (40) in the length direction (D11) is provided with a step (51), and the step (51) has an upward step surface (52); and / or The plug (40) has a protruding side surface (45) and is provided with a plurality of second grooves (55) recessed from the protruding side surface (45), wherein the second grooves (55) extend along a height direction (D13) and are located between adjacent insertion holes (41).

9. A bus duct, characterized in that: The bus duct (1) comprises a shell (10), a plurality of conductors (20) arranged in the shell (10) and a plug (40) according to any one of claims 1 to 8, wherein the shell (10) has end openings (11) at both ends of the length direction of the bus duct (1), the plug (40) blocks the end openings (11), and the conductors (20) extend out of the jacks (41).

10. A bus duct elbow, characterized in that: The elbow (2) comprises a shell (10), a plurality of conductors (20) arranged in the shell (10), and a plug (40) according to any one of claims 1 to 8, wherein the shell (10) is constructed as a component with a corner and has end openings (11) at both ends of its length direction, the plug (40) blocks the end openings (11), and the conductors (20) extend out of the jack (41).

11. The elbow according to claim 10, characterized in that The portion of the conductor (20) located inside the housing (10) is sheathed with a thermoplastic sleeve (60).

Images