Bus duct cover and installation method for bus duct cover

Abstract

To provide a bus duct cover and an installation method of the bus duct cover which can be easily installed and can improve waterproofness.SOLUTION: A bus duct cover according to an embodiment is a bus duct cover 1 including a cover 10 covering a bus duct B. The cover 10 covers the bus duct B extending in an extending direction D2 that intersects with the vertical direction D1, and is placed so as to be slidably in the extending direction D2 for the bus duct B.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a bus duct cover that covers a bus duct and a method for attaching the bus duct cover. [Background technology]

[0002] JP 2011-30366 A describes a bus duct extending in a predetermined direction and a bus duct connection structure. The bus duct includes an approximately U-shaped upper box, an approximately U-shaped lower box, and a plurality of conductors, the plurality of conductors being accommodated in a space formed between the upper box and the lower box. The upper box has an upper surface portion extending in the direction in which the bus duct extends, and a pair of side surfaces extending downward from both ends of the upper surface portion. At both ends in the width direction of the upper surface portion, guide grooves are formed that protrude outward from the upper surface portion in the width direction. The guide grooves collect leaking water, oil, dust, and the like.

[0003] A power distribution device is connected below the bus duct. A switch is mounted inside the power distribution device, and the switch branches the power to the branch line or equipment. The aforementioned guide groove protrudes outward in the width direction of the upper surface part beyond the power distribution device. Therefore, even if leakage water, oil, dust, etc. overflows from the guide groove, the leakage water, oil, dust, etc. are prevented from coming into contact with the power distribution device.

[0004] The bus duct connection structure includes two bus ducts arranged along the extension direction of the bus ducts and an internal tray arranged between the two bus ducts. The internal tray includes an upper edge portion extending in the extension direction of the bus ducts, a pair of side edge portions extending downward from both ends of the upper edge portion, and stoppers formed on both ends of the upper edge portion and the side edge portions in the extension direction. Recesses into which the internal tray fits are formed at the ends of the two bus ducts in the extension direction. The two bus ducts are arranged so that the recesses of the two bus ducts face each other, and the internal tray fits into the pair of recesses facing each other. Leakage water, oil, dust, etc. occurring around the bus ducts are guided to the internal tray, and a certain amount of leakage water, oil, dust, etc. collected in the internal tray is drained and collected from the internal tray. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-30366 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned bus duct, by providing a guide groove or an internal tray, water leakage, oil, dust, etc. accumulate in the guide groove or internal tray. However, in the above-mentioned bus duct, a cover with a special configuration must be created, such as a cover with a guide groove or a cover with a recess into which the internal tray fits, which can cause a problem of complicated installation. In addition, the bus duct may be placed near equipment that sprays water, such as a sprinkler. In this case, since the side portion of the above-mentioned bus duct is exposed, there is a concern that water from the equipment that sprays water may hit the bus duct. Therefore, there is room for improvement in terms of waterproofing.

[0007] An object of the present disclosure is to provide a bus duct cover that can be easily installed and has improved waterproofing, and a method for installing the bus duct cover. [Means for solving the problem]

[0008] The bus duct cover according to the present disclosure is a bus duct cover including a cover for covering a bus duct, the cover covering the bus duct extending in an extension direction intersecting a vertical direction, and being placed on the bus duct so as to be slidable in the extension direction. The bus duct cover covers a branch box attached to the bus duct, and the height of the lower end of the cover covering the bus duct is lower than the height of the lower end of the bus duct and the height of the lower end of the branch box.

[0009] This bus duct cover includes a cover that covers a bus duct that extends in an extension direction that intersects with the vertical direction. The cover that covers the bus duct is slidable along the extension direction in which the bus duct extends. Therefore, the cover can be easily moved to a desired position on the bus duct, thereby improving waterproofing. The bus duct cover can be easily attached because it can be attached by placing the cover on the bus duct and sliding it. In other words, when attaching the bus duct cover to the bus duct, the work of fixing the bus duct to the bus duct can be reduced, and the bus duct cover can be easily attached. In addition, the shape of the cover may be any shape that can cover the bus duct, so the configuration of the bus duct cover can be simplified.

[0010] The cover may cover three faces of the bus duct other than the face facing vertically downward in a cross section of the bus duct cut along a plane perpendicular to the extension direction. In this case, the three faces of the bus duct other than the face facing vertically downward are covered by the cover, so that waterproofing can be further improved. Also, at least a part of the face of the bus duct facing vertically downward is not covered by the cover. Therefore, since at least a part of the face of the bus duct facing vertically downward is not covered, the uncovered part of the bus duct can be easily accessed. Therefore, work such as plugging in the bus duct vertically downward can be easily performed.

[0011] The cover may cover the four faces of the bus duct in a cross section of the bus duct cut in a plane perpendicular to the extension direction. In this case, the four faces of the bus duct are covered by the cover, which can further improve waterproofing. Furthermore, by covering the four faces of the bus duct in a cross section perpendicular to the extension direction, the cover can be prevented from lifting off the bus duct during an earthquake or the like. Furthermore, by configuring the cover to cover the four faces of the bus duct, the strength of the bus duct cover can be increased.

[0012] The method for attaching a bus duct cover according to the present disclosure is a method for attaching a bus duct cover to a bus duct by covering the bus duct with the bus duct cover, and includes a step of covering a bus duct extending in an extension direction intersecting a vertical direction with the cover of the bus duct cover, and in the step of covering the bus duct, the cover is placed on the bus duct so as to be slidable in the extension direction. The bus duct cover covers a branch box attached to the bus duct, and the height of the bottom end of the cover covering the bus duct is lower than the height of the bottom end of the bus duct and the height of the bottom end of the branch box.

[0013] In this bus duct cover installation method, the cover covers a bus duct that extends in an extension direction that intersects with the vertical direction. At this time, the cover is placed on the bus duct so as to be slidable in the extension direction of the bus duct. Therefore, the cover can be moved to a desired position on the bus duct, thereby improving the waterproofing of the bus duct. In addition, the bus duct cover can be installed by sliding the cover in the extension direction, so the bus duct cover can be easily installed. Furthermore, when installing the bus duct cover on the bus duct, the work of fixing the bus duct to the bus duct can be reduced, so the bus duct cover can be easily installed.

[0014] In the step of covering the bus duct, the bus duct may be covered from vertically above the bus duct. In this case, the bus duct cover can be easily attached by placing the cover on the bus duct from vertically above.

[0015] The step of covering the bus duct may include a step of passing a cover through the bus duct and a step of sliding the cover in the extending direction. In this case, the bus duct cover can be attached by sliding the cover, which has been passed through the bus duct in advance, in the extending direction of the bus duct. Therefore, the bus duct cover can be easily attached. In addition, by sliding the cover in the extending direction of the bus duct, the cover can be easily moved to a desired position on the bus duct, thereby improving the waterproofing of the bus duct. Effect of the Invention

[0016] According to the present disclosure, installation can be facilitated and waterproofing can be improved. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a perspective view showing a bus duct cover and a bus duct according to the embodiment. [Diagram 2] FIG. 2 is a side view showing a bus duct cover and a bus duct according to the embodiment. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] 1 is a perspective view showing one step of a method for attaching a bus duct cover according to an embodiment of the present invention; [Diagram 5] FIG. 11 is a perspective view showing a bus duct cover for covering a bus duct according to a modified example. [Figure 6] FIG. 11 is a perspective view showing a bus duct cover according to a modified example. [Figure 7] FIG. 11 is a perspective view showing a bus duct cover and a bus duct according to a modified example. [Figure 8] 8 is a cross-sectional view showing the bus duct and the bus duct cover of FIG. 7 in a cross section perpendicular to the extending direction. [Figure 9] 13 is a side view showing one step of a method for attaching a bus duct cover according to a modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the bus duct cover and the installation method of the bus duct cover according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and duplicated descriptions are omitted as appropriate. In addition, the drawings may be partially simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

[0019] In the present disclosure, a "bus duct" includes a strip-shaped conductor and a covering portion that covers the conductor. The conductor of the bus duct is made of, for example, copper or aluminum. The covering portion of the bus duct is made of, for example, an insulator or a metal (iron or aluminum, for example). A "bus duct cover" refers to a member that covers at least a part of a bus duct. A "bus duct cover" may include only a cover that covers the bus duct, or may include a cover that covers the bus duct and something other than the cover (for example, a cushioning material to be described later). In the present disclosure, a bus duct extends in an extension direction that intersects with the vertical direction. A "direction that intersects with the vertical direction" refers to a direction other than the vertical direction. A "direction that intersects with the vertical direction" may be, for example, a horizontal direction, or an oblique direction that intersects with both the vertical direction and the horizontal direction.

[0020] (First embodiment) Fig. 1 is a perspective view showing a bus duct cover 1 and a bus duct B according to this embodiment. As shown in Fig. 1, the bus duct B extends along an extension direction D2 intersecting a vertical direction D1. The extension direction D2 is, for example, a horizontal direction. As an example, the extension direction D2 is perpendicular to the vertical direction D1.

[0021] In this embodiment, a plurality of bus ducts B are arranged along the extension direction D2, and the bus duct cover 1 covers a connection portion C of a pair of bus ducts B. For example, the bus duct cover 1 covers a branch box A attached to the bus duct B. In Fig. 1, the branch box A, the bus duct B, and the connection portion C are shown diagrammatically.

[0022] For example, the bus duct B has a plate-like portion B1 that extends in the vertical direction D1 and the extending direction D2 and has a thickness in the width direction D3 of the bus duct cover 1, and protruding portions B2 that protrude in the width direction D3 from one end and the other end of the plate-like portion B1 in the vertical direction D1. The protruding portions B2 protrude on both sides in the width direction D3 from the upper and lower ends of the plate-like portion B1. The branch box A is attached to the protruding portion B2 on the lower side of the bus duct B at the connection portion C, for example.

[0023] Fig. 2 is a side view showing the bus duct cover 1 and the bus duct B. Fig. 3 is a cross-sectional view taken along line AA in Fig. 2. As shown in Figs. 2 and 3, the bus duct cover 1 covers the bus duct B from vertically above. In this embodiment, the bus duct cover 1 covers the connection portion C of the bus duct B and the branch box A. The bus duct cover 1 is attached so as to cover, for example, the side surface B3 of the bus duct B and the side surface A1 of the branch box A.

[0024] The bus duct cover 1 includes, for example, a cover 10 that covers a bus duct B. The cover 10 is, for example, made of a steel plate. A cross section of the cover 10 when the cover 10 is cut along a plane perpendicular to the extension direction D2 (hereinafter, this may be simply referred to as a "cross section of the cover 10") has, for example, a U-shape that is open vertically downward. The cover 10 has flat end faces 10c at each of one end and the other end in the extension direction D2. For example, the end faces 10c have a U-shape that is open vertically downward.

[0025] As an example, the cross section of the cover 10 is U-shaped throughout the extension direction D2 of the cover 10. The cover 10 covers three faces of the bus duct B except for the face B4 facing vertically downward. That is, the cover 10 covers a pair of side faces B3 and an upper face B5 of the bus duct B. For example, the height of the lower end 10b of the cover 10 covering the bus duct B is lower than the height of the lower end B6 of the bus duct B and the height of the lower end A2 of the branch box A. In this case, the cover 10 can more reliably protect the bus duct B and the branch box A from water and the like. The cover 10 has, for example, a pair of side parts 11 extending in the vertical direction D1 and the extension direction D2 and aligned along the width direction D3, and an upper surface part 12 connecting the upper ends of the pair of side parts 11 to each other and extending along the extension direction D2 and the width direction D3.

[0026] The side portion 11 has, for example, a lower end 10b, an inner surface 11b facing the bus duct B and the branch box A, and an outer surface 11c facing the opposite side to the inner surface 11b. The top surface portion 12 has, for example, an inner surface 12b facing the bus duct B, and an outer surface 12c facing the opposite side to the inner surface 12b. For example, the outer surface 11c of the side portion 11 and the outer surface 12c of the top surface portion 12 are smooth surfaces (a flat surface, for example). In this case, it is possible to prevent water from accumulating on the side portion 11 or the top surface portion 12.

[0027] The length L1 of the cover 10 in the extension direction D2 is, for example, longer than the length L2 of the branch box A in the extension direction D2. This allows the cover 10 to cover the entire branch box A (the entire branch box A except for the lower end A2). As an example, the length L1 of the cover 10 may be twice or more the length L2 of the branch box A. In addition, when the distance between one end of the branch box A in the extension direction D2 and one end of the cover 10 in the extension direction D2 is K1, and the distance between the other end of the branch box A in the extension direction D2 and the other end of the cover 10 in the extension direction D2 is K2, the sum of the values ​​of K1 and K2 may be equal to or greater than the length L2 of the branch box A (or equal to or greater than half the length L1 of the cover 10). In this case, the possibility of water hitting the branch box A can be further reduced.

[0028] The cover 10 is placed so as to be slidable along the extension direction D2 relative to the bus duct B. For example, the position of the cover 10 in the extension direction D2 relative to the bus duct B is variable. As an example, the cover 10 does not have a portion fixed to the bus duct B. In this case, the cover 10 can be moved along the extension direction D2 in a state where it is lifted up relative to the bus duct B.

[0029] When the cover 10 covers the bus duct B, for example, the inner surface 12b of the upper surface portion 12 of the cover 10 contacts the upper surface B5 of the bus duct B. The inner surface 12b and the upper surface B5 are, for example, both flat surfaces. In this case, the cover 10 placed on the bus duct B can be stabilized. When the cover 10 covers the bus duct B, for example, a gap S is formed between the inner surface 11b of the side portion 11 of the cover 10 and the side surface B3 of the bus duct B, and between the inner surface 11b of the cover 10 and the side surface A1 of the branch box A. However, the inner surface 11b may be in contact with the side surface A1 (for example, the entire side surface A1). Also, the inner surface 11b and the side surface B3, and at least a part of the inner surface 11b and the side surface A1 may be in contact with each other. In this case, since it is possible to support the cover 10 at three or more points (three-point support) with respect to the bus duct B or the branch box A, the cover 10 placed on the bus duct B can be made more stable.

[0030] Next, a method for attaching the bus duct cover according to this embodiment will be described. An example of a method for attaching the bus duct cover 1 to the bus duct B will be described below. In this embodiment, as an example, a pair of bus ducts B are connected to each other via a connection part C along the extension direction D2, and a branch box A is attached to the lower part of the connection part C.

[0031] The bus duct B is covered with the cover 10 of the bus duct cover 1 (process of covering the bus duct). At this time, as shown in FIG. 4, the cover 10 covers the bus duct B from above in the vertical direction. The cover 10 is placed on the bus duct B so as to be slidable along the extension direction D2. Therefore, in the method of attaching the bus duct cover 1 according to this embodiment, the cover 10 may be placed at an arbitrary position in the extension direction D2 of the bus duct B, and then the cover 10 may be slid to a desired position (process of sliding the cover). Also, the cover 10 may be placed directly on a desired position of the bus duct B (for example, a position where the branch box A and the connection part C are located) from above in the vertical direction. After the cover 10 is placed on the bus duct B and the desired position of the bus duct B is covered with the cover 10 as described above, a series of processes of the method of attaching the bus duct cover 1 is completed.

[0032] Next, the effects obtained from the bus duct cover 1 according to this embodiment and the installation method of the bus duct cover 1 will be described. The bus duct cover 1 according to this embodiment and the installation method of the bus duct cover 1 are provided with a cover 10 that covers a bus duct B extending in an extension direction D2 intersecting a vertical direction D1. The cover 10 that covers the bus duct B is slidable along the extension direction D2 in which the bus duct B extends. Therefore, the cover 10 can be easily moved to a desired position on the bus duct B, thereby improving waterproofing.

[0033] The bus duct cover 1 can be attached by placing the cover 10 on the bus duct B and sliding it, so that the bus duct cover 1 can be easily attached. That is, when attaching the bus duct cover 1 to the bus duct B, the work of fixing the cover 10 to the bus duct B can be reduced, so that the bus duct cover 1 can be easily attached. In addition, the work of fixing the cover 10 to the bus duct B can be reduced, and the shape of the cover 10 only needs to be such that it can cover the bus duct B, so that the configuration of the bus duct cover 1 can be simplified. For example, the cover 10 is integrally formed. In this case, the number of parts of the bus duct cover 1 can be reduced.

[0034] As described above, the cover 10 may cover three faces (for example, a pair of side faces B3 and an upper face B5) of the bus duct B other than the face B4 facing vertically downward in a cross section of the bus duct B cut along a plane perpendicular to the extending direction D2. In this case, the three faces of the bus duct B other than the face B4 facing vertically downward are covered by the cover 10, so that waterproofing can be further improved. In addition, at least a part of the face B4 facing vertically downward of the bus duct B is not covered by the cover 10. Therefore, since at least a part of the face B4 facing vertically downward of the bus duct B is not covered, the uncovered part of the bus duct B can be easily accessed. Therefore, work such as plugging in the vertically downward part of the bus duct B can be easily performed.

[0035] As described above, in the process of covering the bus duct, the bus duct B may be covered from above the bus duct B. In this case, the bus duct cover 1 can be attached by placing the cover 10 on the bus duct B from above, so that the bus duct cover 1 can be easily attached. The bus duct cover 1 can also be easily attached to an existing bus duct B that is already connected. It is also possible to place the cover 10 on the bus duct B in advance and then slide the cover 10 in the extension direction D2 (for example, after connecting the bus duct B). When the cover 10 is placed on the bus duct B in advance and then slides the cover 10 in the extension direction D2, this is effective, for example, when it is difficult to attach the cover 10 from above later in a narrow space. In addition, since the cover 10 is slidably placed on the bus duct B, the cover 10 can be slid at any timing, not only when the cover 10 is placed, but even after the cover 10 is placed. Therefore, since the cover 10 can be slid during maintenance after the cover 10 is placed, maintenance of the bus duct B can be easily performed by sliding the cover 10.

[0036] The bus duct cover 1 according to the first embodiment and the method for attaching the bus duct cover 1 have been described above. However, the bus duct cover and the method for attaching the bus duct cover according to the present disclosure are not limited to the first embodiment described above. Also, in the above, an example has been described in which the branch box A is attached to the protruding portion B2 on the lower side of the bus duct B at the connection portion C. However, the configuration of the bus duct B and the device attached to the bus duct B is not limited to the above example and can be changed as appropriate.

[0037] 5, a branch box A may be placed on the upper protrusion B2 of a bus duct B at a connection portion C. The branch box A is fixed on top of the bus duct B, and is interposed between an upper surface portion 12 of the cover 10 and the bus duct B. The bus duct cover 1 is placed on the bus duct B and the branch box A such that the inner surface 12b of the upper surface portion 12 contacts an upper surface A3 of the branch box A.

[0038] Fig. 6 is a perspective view showing a bus duct cover 1A and a bus duct B according to a modified example. In the following, descriptions that overlap with those of the first embodiment will be omitted as appropriate. As shown in Fig. 6, the bus duct cover 1A includes the above-mentioned cover 10 and a cushioning material 15 attached to the cover 10. For example, the cushioning material 15 is a safety member that cushions the impact on the cover 10 and the bus duct B when the cover 10 is placed on the bus duct B.

[0039] For example, the bus duct cover 1A includes a pair of cushioning materials 15 arranged along the width direction D3, and each of the pair of cushioning materials 15 is attached to each side portion 11. As an example, the cushioning material 15 is made of rubber. As a material for the cushioning material 15, a highly versatile material such as rubber can be used. The cushioning material 15 is fixed to the lower end of the cover 10, for example. The cushioning material 15 has an extension portion 15b that covers the lower end of the cover 10 and extends in the extension direction D2, and a pair of bent portions 15c that bend upward from one end and the other end of the extension portion 15b in the extension direction D2 along the end surface 10c of the cover 10. In this bus duct cover 1A, since the cushioning material 15 is attached to the lower end of the cover 10, it is possible to make it difficult for the cover 10 to directly hit the bus duct B when the cover 10 is placed on the bus duct B, and therefore it is possible to more reliably prevent the bus duct B and the cover 10 from being damaged.

[0040] Second embodiment Next, a bus duct cover 1B according to a second embodiment will be described with reference to Fig. 7. Fig. 7 is a perspective view showing the bus duct cover 1B and the bus duct B. Fig. 8 is a cross-sectional view of the bus duct cover 1B and the bus duct B cut along a plane perpendicular to the extension direction D2. As shown in Figs. 7 and 8, the bus duct cover 1B includes a cover 20 that covers the bus duct B.

[0041] In a cross section of the cover 20 taken along a plane perpendicular to the extending direction D2 (hereinafter, sometimes simply referred to as a "cross section of the cover 20"), the cover 20 is placed on the bus duct B so as to surround the bus duct B from all sides. That is, the cover 20 covers the four faces of the bus duct B in a cross section taken along a plane perpendicular to the extending direction D2. In this embodiment, the cover 20 covers a pair of side faces B3, an upper face B5, and a lower face B7 of the bus duct B. For example, the cross section of the cover 20 has a square shape. End faces 20c of the cover 20 located at both ends of the cover 20 in the extending direction D2 have a square shape. As an example, the cross section of the cover 20 has a square shape throughout the entire extending direction D2 of the cover 20.

[0042] The cover 20 has, for example, a pair of side portions 21 extending in the vertical direction D1 and the extension direction D2 and aligned along the width direction D3, an upper surface portion 22 connecting upper ends of the pair of side portions 21 to each other, and a lower surface portion 23 connecting lower ends of the pair of side portions 21 to each other. The configuration of the cover 20 is similar to that of the cover 10, for example, except for having the lower surface portion 23. Both the upper surface portion 22 and the lower surface portion 23 extend along the extension direction D2 and the width direction D3. Therefore, in the following, explanations that overlap with the configuration of the cover 10 will be omitted as appropriate.

[0043] The cover 20 is placed on the bus duct B so as to be slidable along the extension direction D2. In a cross section of the cover 20, the cover 20 is placed on the bus duct B in a state in which the cover 20 surrounds the bus duct B and the branch box A from above, below, left and right. Therefore, even if the cover 20 is lifted up due to an earthquake or the like, it is possible to prevent the cover 20 from coming off the bus duct B.

[0044] Next, a method of attaching the bus duct cover 1B according to the second embodiment will be described. As shown in Fig. 9, in this embodiment, before connecting the bus ducts B, the cover 20 is passed through one of the pair of bus ducts B (a step of passing the cover through). After that, the pair of bus ducts B are connected to each other via a connection part C (a step of connecting the bus ducts). At this time, for example, a branch box A is attached to the lower part of the connection part C.

[0045] The cover 20 is slid along the extension direction D2 relative to the bus duct B (step of sliding the cover). By sliding the cover 20 in this manner, the cover 20 is moved to a desired position (for example, a position where the branch box A and the connection part C are located). Then, after the desired position of the bus duct B is covered with the cover 20, a series of steps in the method of attaching the bus duct cover 1B is completed.

[0046] As described above, in the bus duct cover 1B according to the second embodiment and the mounting method of the bus duct cover 1B, the cover 20 is slidable along the extension direction D2 of the bus duct B. Therefore, the cover 20 can be easily moved to a desired position of the bus duct B, thereby improving waterproofing. Therefore, the bus duct cover 1B according to the second embodiment can provide the same effects as the bus duct cover 1 according to the first embodiment.

[0047] In the second embodiment, the cover 20 covers the four faces of the bus duct B (a pair of side faces B3, an upper face B5, and a lower face B7) in a cross section of the bus duct B cut along a plane perpendicular to the extension direction D2. Therefore, the four faces of the bus duct B are covered by the cover 20, which can further improve waterproofing. Furthermore, since the four faces of the bus duct B in a cross section perpendicular to the extension direction D2 are covered by the cover 20, it is possible to suppress the cover 20 from floating up from the bus duct B during an earthquake or the like. Furthermore, by configuring the cover 20 to cover the four faces of the bus duct B, the strength of the bus duct cover 1B can be increased.

[0048] In the method for attaching the bus duct cover according to the second embodiment, the step of covering the bus duct includes a step of passing the cover 20 through the bus duct B and a step of sliding the cover 20 in the extending direction D2. Therefore, the bus duct cover 1B can be attached by sliding the cover 20, which has been passed through the bus duct B in advance, in the extending direction D2 of the bus duct B. Therefore, the bus duct cover 1B can be easily attached. In addition, by sliding the cover 20 in the extending direction D2 of the bus duct B, the cover 20 can be easily moved to a desired position of the bus duct B, thereby improving the waterproofing of the bus duct B. Since the cover 20 is slidably placed on the bus duct B, the cover 20 can be slid at any time even after the cover 20 is placed. Therefore, similar to the first embodiment, maintenance of the bus duct B can be easily performed by sliding the cover 20.

[0049] The cover 20 having a square-shaped cross section according to the second embodiment is, for example, integrally formed. In this case, the number of parts of the bus duct cover 1B can be reduced. However, the cover 20 may be made of a plurality of members. That is, the cover 20 may be made by joining a plurality of members to each other. For example, a square-shaped cover 20 can be formed by joining a square-shaped second member to a square-shaped first member. In this case, the first member of the cover 20 is placed on the bus duct from above vertically, and then the second member is joined to the first member, thereby attaching the bus duct cover 1B. Therefore, the bus duct cover 1B can be easily attached to an existing bus duct B that has already been connected.

[0050] The embodiment and various examples of the bus duct cover and the mounting method of the bus duct cover according to the present disclosure have been described above. However, the present disclosure is not limited to the above-mentioned embodiment or various examples, and may be modified or applied to other things within the scope of the gist described in each claim. In other words, the present disclosure can be modified in various ways within the scope of the gist of each claim, and for example, the shape, size, number, material, and arrangement of each part of the bus duct cover can be appropriately changed within the scope of the above gist.

[0051] In the above embodiment, as shown in, for example, Figs. 1 to 3, an example has been described in which when the bus duct cover 1 is placed on the bus duct B, the inner surface 12b of the upper surface portion 12 of the cover 10 comes into contact with the upper surface B5 of the bus duct B. However, a cushioning material may be interposed between the inner surface 12b of the upper surface portion 12 and the upper surface B5 of the bus duct B. In this case, the force caused by the contact of the cover 10 with the upper surface B5 of the bus duct B can be reduced, so that the bus duct B can be made even more resistant to damage. For example, a cushioning material may be attached to both side surfaces (recessed portions between a pair of protruding portions B2) of the plate-shaped portion B1 of the bus duct B. In this case, the cushioning material can protect the bus duct B when the bus duct cover is attached, etc.

[0052] In the above embodiment, an example has been described in which the length L1 of the cover 10 is two or more times the length L2 of the branching box A. However, the length L1 of the cover 10 may be one or more times the length L2 of the branching box A. In other words, the length L1 of the cover 10 may be a length that can cover the entire branching box A, and can be changed as appropriate.

[0053] In the above embodiment, an example in which the cover 10 is made of a steel plate has been described. However, the cover may be made of, for example, resin, and the material of the cover is not particularly limited. In the above embodiment, an example in which the cross section of the cover 10 is U-shaped throughout the extension direction D2 of the cover 10 has been described. However, the cross section of the cover when cut on a plane perpendicular to the extension direction of the bus duct may be U-shaped in a part of the extension direction, or may be square-shaped in a part of the extension direction, and can be changed as appropriate. The opening formed vertically below the cover may extend throughout the extension direction of the bus duct, or may extend in a part of the extension direction of the bus duct.

[0054] For example, the cross-sectional shape of the cover at the center of the extension direction D2 of the cover and the cross-sectional shape of the cover at the end of the extension direction D2 of the cover may be different from each other. Furthermore, the cross-sectional shape of the cover does not have to be U-shaped or rectangular, and may be, for example, an inverted U-shape, a quadrilateral shape including a trapezoid, a polygonal shape including a triangular shape or a hexagonal shape, or an oval shape, and may be changed as appropriate.

[0055] In the above embodiment, an example was described in which the cover 10 has flat end surfaces 10c at both ends in the extension direction D2. However, the shape of each end surface at both ends in the extension direction of the cover does not have to be flat. In addition, for example, at least one of the ends in the extension direction D2 of the cover 10 may have a bent portion that is bent inward in the width direction D3 of the cover 10.

[0056] Furthermore, in the above embodiment, an example was described in which the outer surface 11c of the side portion 11 and the outer surface 12c of the top surface portion 12 are smooth surfaces. However, each surface constituting the cover may be a surface other than a smooth surface. For example, a curved portion or a step may be formed on at least a part of each surface constituting the cover. In this way, the form of each surface constituting the cover can be changed as appropriate. In addition, the cover may be formed as a single unit, or may have a structure in which multiple members are joined together to form an integrated unit.

[0057] In the above embodiment, an example was described in which the cover 10 does not have a portion fixed to the bus duct B. However, the cover 10 may have a portion temporarily fixed to the bus duct B. As an example, a latched portion protruding in the width direction D3 may be attached to the plate-shaped portion B1 of the bus duct B, and the cover 10 may have a latching portion protruding from the side portion 11, and the latched portion may be caught by the latched portion when the bus duct B is covered with the cover 10. Then, when the cover 10 is lifted, the latching of the latched portion with respect to the latched portion may be released, and the bus duct cover 1 may be made slidable with respect to the bus duct B. In this way, the mounting structure of the cover to the bus duct may be such that the cover is placed on the bus duct or the like, or such that a part of the cover is latched to a predetermined portion of the bus duct, and may be appropriately changed.

[0058] In the above embodiment, an example was described in which the cover 10 was placed on the connection part C of the bus duct B that had been installed in advance. However, the manner in which the bus duct was connected and the cover was placed is not limited to the above example. For example, before hanging the bus duct at ceiling height, the bus duct and the branch box, etc. may be connected (pre-assembled), and the bus duct may be hung at ceiling height with the cover placed on it. Furthermore, the cover may be slid after the bus duct is hung at ceiling height. This is effective, for example, when it is difficult to attach the cover from above later in a narrow space. In this way, the timing of hanging the bus duct and the timing of sliding the cover can be changed as appropriate.

[0059] In the above embodiment, an example has been described in which the extension direction D2 of the bus duct B is horizontal. However, the extension direction of the bus duct may be a direction extending obliquely to the horizontal direction, or may be curved. That is, the shape of the bus duct is not limited to a shape extending in the horizontal direction. Furthermore, in the above embodiment, the cover 10 that covers the bus duct B and the branch box A has been exemplified. However, the cover may cover only the bus duct, or may cover a device in the bus duct other than the branch box. That is, the branch box can be omitted in the bus duct, and the form and type of the bus duct can also be changed as appropriate. [Explanation of symbols]

[0060] 1,1A,1B...Bath duct cover, 10,20...Cover, 10b...Bottom end, 10c,20c...End face, 11,21...Side part, 11b...Inner face, 11c...Outer face, 12,22...Top part, 12b...Inner face, 12c...Outer face, 15...Buffer material, 15b...Extended part, 15c...Bent part, 2 3...Bottom surface part, A...branch box, A1...side surface, A2...bottom end, A3...top surface, B...bus duct, B1...plate-like part, B2...projection part, B3...side surface, B4...face, B5...top surface, B6...bottom end, B7...bottom surface, C...connection part, D1...vertical direction, D2...extension direction, D3...width direction, S...gap.

Claims

1. A bus duct cover having a cover for covering a bus duct, the cover covers a bus duct extending in an extension direction intersecting a vertical direction, and is placed on the bus duct so as to be slidable in the extension direction, The bus duct cover covers a branch box attached to the bus duct, The height of the lower end of the cover covering the bus duct is lower than the height of the lower end of the bus duct and the height of the lower end of the branch box. Bus duct cover.

2. the cover covers three surfaces of the bus duct other than a surface facing vertically downward in a cross section of the bus duct cut by a plane perpendicular to the extension direction; The bus duct cover according to claim 1.

3. the cover covers four faces of the bus duct in a cross section obtained by cutting the bus duct along a plane perpendicular to the extension direction, The bus duct cover according to claim 1.

4. A method for covering a bus duct with a bus duct cover and attaching the bus duct cover to the bus duct, comprising the steps of: covering a bus duct extending in an extension direction intersecting a vertical direction with a cover of the bus duct cover; In the step of covering the bus duct, the cover is placed on the bus duct so as to be slidable in the extension direction, The bus duct cover covers a branch box attached to the bus duct, The height of the lower end of the cover covering the bus duct is lower than the height of the lower end of the bus duct and the height of the lower end of the branch box. How to install a bus duct cover.

5. In the step of covering the bus duct, the bus duct is covered from vertically above the bus duct. A method for mounting a bus duct cover according to claim 4.

6. The step of covering the bus duct includes: passing the cover through the bus duct; and sliding the cover in the extending direction. A method for mounting a bus duct cover according to claim 4.

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