JP7620498B2 - Bus duct cover and installation method for bus duct cover - Google Patents

Description

This disclosure relates to a bus duct cover that covers a bus duct and a method for installing the bus duct cover.

JP 2011-30366 A describes a bus duct that extends in a predetermined direction, and a bus duct connection structure. The bus duct comprises an approximately U-shaped upper box, an approximately U-shaped lower box, and multiple conductors, with the multiple conductors housed in a space formed between the upper box and the lower box. The upper box has an upper surface that extends in the extension direction of the bus duct, and a pair of side surfaces that extend downward from both ends of the upper surface. At both ends in the width direction of the upper surface, guide grooves are formed that protrude outward from the upper surface in the width direction. The guide grooves collect leaking water, oil, dust, etc.

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 water, oil, dust, etc. leaks and overflows from the guide groove, contact of the water, oil, dust, etc. with the power distribution device is suppressed.

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 each of both ends of the upper edge portion, and stoppers formed at 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. Leaking water, oil, dust, etc. that occurs around the bus ducts is guided to the internal tray, and a certain amount of leaking water, oil, dust, etc. that has collected in the internal tray is drained and collected from the internal tray.

JP 2011-30366 A

In the bus duct described above, 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 bus duct described above, 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, bus ducts may be placed near equipment that sprays water, such as sprinklers. In this case, since the side portion of the bus duct described above is exposed, there is a concern that water from the equipment that sprays water may hit it. Therefore, there is room for improvement in terms of waterproofing.

The present disclosure aims to provide a bus duct cover that is easy to install and has high waterproofing properties, and a method for installing the bus duct cover.

The bus duct cover of the present disclosure is a bus duct cover comprising a cover that covers a bus duct, the cover covering the bus duct extending in an extension direction intersecting the vertical direction and being placed on the bus duct so as to be slidable in that extension direction , the bus duct cover covering 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.

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 of the bus duct. 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, making it easy to attach the bus duct cover. In addition, the shape of the cover only needs to be one that can cover the bus duct, so the configuration of the bus duct cover can be simplified.

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 in 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, further improving waterproofing. In addition, at least a portion of the face of the bus duct facing vertically downward is not covered by the cover. Therefore, since at least a portion of the face of the bus duct facing vertically downward is not covered, it is easy to access the uncovered portion of the bus duct. This makes it easy to perform work such as plugging in the bus duct vertically downward.

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 further improves waterproofing. Furthermore, by covering the four faces of the bus duct in a cross section perpendicular to the extension direction, it is possible to prevent the cover from lifting off the bus duct during an earthquake, etc. Furthermore, by configuring the cover to cover the four faces of the bus duct, the strength of the bus duct cover can be increased.

The installation method of a bus duct cover according to the present disclosure is an installation method for covering a bus duct with the bus duct cover and attaching the bus duct cover to the bus duct, 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, in which the cover is placed on the bus duct so as to be slidable in the extension direction, and 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.

In this bus duct cover installation method, the cover covers the 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 that it can slide 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 easily because it can be installed by sliding the cover in the extension direction. Furthermore, when installing the bus duct cover on the bus duct, the work of fixing it to the bus duct can be reduced, making it easier to install the bus duct cover.

In the process of covering the bus duct, the bus duct may be covered from vertically above the bus duct. In this case, the cover can be placed on the bus duct from vertically above, making it easy to attach the bus duct cover.

The process of covering the bus duct may include a process of passing a cover through the bus duct and a process of sliding the cover in the extension direction. In this case, the bus duct cover can be attached by sliding the cover that has already been passed through the bus duct in the extension direction of the bus duct. This makes it easy to attach the bus duct cover. In addition, by sliding the cover in the extension direction of the bus duct, the cover can be easily moved to the desired position on the bus duct, thereby improving the waterproofing of the bus duct.

This disclosure allows for easy installation and improved waterproofing.

FIG. 2 is a perspective view showing a bus duct cover and a bus duct according to the embodiment. FIG. 2 is a side view showing a bus duct cover and a bus duct according to the embodiment. 3 is a cross-sectional view taken along line AA in FIG. 2. 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; FIG. 11 is a perspective view showing a bus duct cover for covering a bus duct according to a modified example. FIG. 11 is a perspective view showing a bus duct cover according to a modified example. FIG. 11 is a perspective view showing a bus duct cover and a bus duct according to a modified example. 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 extension direction. 13 is a side view showing one step of a method for attaching a bus duct cover according to a modified example. FIG.

Below, 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 will be omitted as appropriate. In addition, the drawings may be partially simplified or exaggerated to facilitate understanding, and the dimensional ratios, etc. are not limited to those shown in the drawings.

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, which will 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 a diagonal direction that intersects with both the vertical direction and the horizontal direction.

First Embodiment
Fig. 1 is a perspective view showing a bus duct cover 1 and a bus duct B according to the present 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.

In this embodiment, multiple bus ducts B are arranged along the extension direction D2, and the bus duct cover 1 covers the 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.

For example, the bus duct B has a plate-shaped portion B1 that extends in the vertical direction D1 and the extension direction D2 and has a thickness in the width direction D3 of the bus duct cover 1, and a protruding portion B2 that protrudes in the width direction D3 from each of one end and the other end of the plate-shaped portion B1 in the vertical direction D1. The protruding portion B2 protrudes on both sides in the width direction D3 from each of the upper and lower ends of the plate-shaped 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.

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

The bus duct cover 1 includes, for example, a cover 10 that covers a bus duct B. As an example, the cover 10 is made of a steel plate. The cross section of the cover 10 when cut along a plane perpendicular to the extension direction D2 (hereinafter, sometimes simply referred to as the "cross section of the cover 10") is, for example, U-shaped with an open vertical downward side. 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 are U-shaped with an open vertical downward side.

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, etc. 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.

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, water can be prevented from accumulating on the side portion 11 or the top surface portion 12.

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 more than twice 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 more than the length L2 of the branch box A (or more 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.

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 that is fixed to the bus duct B. In this case, the cover 10 can be moved along the extension direction D2 while being lifted up relative to the bus duct B.

When the cover 10 is covering 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 is covering 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, it is possible to support the cover 10 at three or more points (three-point support) on the bus duct B or the branch box A, making the cover 10 placed on the bus duct B more stable.

Next, a method for attaching the bus duct cover according to this embodiment will be described. Below, an example of a method for attaching the bus duct cover 1 to the bus duct B will be described. 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.

The bus duct B is covered with the cover 10 of the bus duct cover 1 (bus duct covering process). At this time, as shown in FIG. 4, the cover 10 covers the bus duct B from above the bus duct B. 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 mounting the bus duct cover 1 according to this embodiment, the cover 10 may be placed at any position in the extension direction D2 of the bus duct B and then slid to a desired position (sliding the cover process). The cover 10 may also be placed directly on a desired position of the bus duct B (for example, the position where the branch box A and the connection part C are located) from above vertically. After placing the cover 10 on the bus duct B and covering the desired position of the bus duct B with the cover 10 as described above, a series of steps in the mounting method of the bus duct cover 1 is completed.

Next, the effects obtained from the bus duct cover 1 and the installation method of the bus duct cover 1 according to this embodiment will be described. The bus duct cover 1 and the installation method of the bus duct cover 1 according to this embodiment are provided with a cover 10 that covers the bus duct B extending in an extension direction D2 that intersects with the 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 the desired position of the bus duct B, thereby improving waterproofing.

The bus duct cover 1 can be attached by placing the cover 10 on the bus duct B and sliding it, so the bus duct cover 1 can be easily attached. In other words, 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 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 capable of covering the bus duct B, so 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.

As described above, the cover 10 may cover three faces (e.g., 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 extension 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 portion of the face B4 facing vertically downward of the bus duct B is not covered by the cover 10. Therefore, since at least a portion of the face B4 facing vertically downward of the bus duct B is not covered, the uncovered portion of the bus duct B can be easily accessed. Therefore, work such as plugging in the bus duct B vertically downward can be easily performed.

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 has already been 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 slid 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, the cover 10 can be slid during maintenance after it is placed on the bus duct B, so maintenance can be easily performed on the bus duct B by sliding the cover 10.

The above describes the bus duct cover 1 and the installation method of the bus duct cover 1 according to the first embodiment. However, the bus duct cover and the installation method of the bus duct cover according to the present disclosure are not limited to the first embodiment described above. Also, in the above, an example was described in which the branch box A is attached to the lower protrusion B2 of the bus duct B at the connection part C. However, the configuration of the bus duct B and the equipment attached to the bus duct B is not limited to the above example and can be changed as appropriate.

For example, as shown in FIG. 5, a branch box A may be placed on the upper protrusion B2 of the bus duct B at the connection C. The branch box A is fixed on top of the bus duct B, and is interposed between the upper surface 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 so that the inner surface 12b of the upper surface 12 contacts the upper surface A3 of the branch box A.

Figure 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 described above will be omitted as appropriate. As shown in Figure 6, the bus duct cover 1A includes the cover 10 described above and a cushioning material 15 attached to the cover 10. For example, the cushioning material 15 is a safety component that reduces impact on the cover 10 and the bus duct B when the cover 10 is placed on the bus duct B.

For example, the bus duct cover 1A has 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 materials 15 are made of rubber. As a material for the cushioning materials 15, a highly versatile material such as rubber can be used. The cushioning materials 15 are fixed to the lower end of the cover 10, for example. The cushioning materials 15 have 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 along the end surface 10c of the cover 10 from one end and the other end of the extension portion 15b in the extension direction D2. In this bus duct cover 1A, the cushioning materials 15 are attached to the lower end of the cover 10, so that when the cover 10 is placed on the bus duct B, the cover 10 is less likely to come into direct contact with the bus duct B, and therefore damage to the bus duct B and the cover 10 can be more reliably suppressed.

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.

In a cross section of the cover 20 when the cover 20 is cut on a plane perpendicular to the extension 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 of the bus duct B cut on a plane perpendicular to the extension 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 is in a square shape. The end faces 20c of the cover 20 located at both ends of the cover 20 in the extension direction D2 are in a square shape. As an example, the cross section of the cover 20 is in a square shape throughout the entire extension direction D2 of the cover 20.

The cover 20 has, for example, a pair of side portions 21 that extend in the vertical direction D1 and the extension direction D2 and are aligned along the width direction D3, an upper surface portion 22 that connects the upper ends of the pair of side portions 21 to each other, and a lower surface portion 23 that connects the 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 that it has the lower surface portion 23. The upper surface portion 22 and the lower surface portion 23 both 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.

The cover 20 is placed on the bus duct B so that it can slide along the extension direction D2. In the cross section of the cover 20, the cover 20 is placed on the bus duct B in a state in which it 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 by an earthquake or the like, it is possible to prevent the cover 20 from coming off the bus duct B.

Next, a method for 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 (passing the cover through process). After that, the pair of bus ducts B are connected to each other via the connection part C (connecting the bus ducts process). At this time, for example, a branch box A is attached to the lower part of the connection part C.

The cover 20 is slid along the extension direction D2 relative to the bus duct B (the process of sliding the cover). By sliding the cover 20 in this manner, the cover 20 is moved to the desired position (for example, the 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, the series of steps in the method of installing the bus duct cover 1B is completed.

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 on the bus duct B, improving waterproofing. Therefore, the bus duct cover 1B according to the second embodiment provides the same effects as the bus duct cover 1 according to the first embodiment.

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, since the four faces of the bus duct B are covered by the cover 20, the waterproofing can be further improved. 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.

In the bus duct cover mounting method according to the second embodiment, the process of covering the bus duct includes a process of passing the cover 20 through the bus duct B and a process of sliding the cover 20 in the extension direction D2. Therefore, the bus duct cover 1B can be mounted by sliding the cover 20, which has been passed through the bus duct B in advance, in the extension direction D2 of the bus duct B. Therefore, the bus duct cover 1B can be easily mounted. In addition, by sliding the cover 20 in the extension direction D2 of the bus duct B, the cover 20 can be easily moved to a desired position on 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, as in the first embodiment, maintenance of the bus duct B can be easily performed by sliding the cover 20.

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 multiple members. That is, the cover 20 may be made by joining multiple members to each other. For example, a square-shaped cover 20 can be formed by joining a square-shaped first member to a square-shaped second 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 to attach the bus duct cover 1B. Therefore, the bus duct cover 1B can be easily attached to an existing bus duct B that is already connected.

The above describes the embodiment and various examples of the bus duct cover and the installation method of the bus duct cover according to the present disclosure. However, the present disclosure is not limited to the above-mentioned embodiment or various examples, and may be modified or applied to other things without changing the gist of each claim. In other words, the present disclosure may be modified in various ways without changing the gist of each claim, and for example, the shape, size, number, material and arrangement of each part of the bus duct cover may be modified as appropriate within the scope of the above gist.

In the above embodiment, as shown in Figs. 1 to 3, for example, an example was described in which 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 when the bus duct cover 1 is placed on 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 cover 10 abutting against the upper surface B5 of the bus duct B can be reduced, making it even more difficult for the bus duct B to be damaged. For example, a cushioning material may be attached to both side surfaces of the plate-shaped portion B1 of the bus duct B (the recessed portion between the pair of protruding portions B2). In this case, the cushioning material can protect the bus duct B when the bus duct cover is attached, etc.

In the above embodiment, an example was described in which the length L1 of the cover 10 is at least twice the length L2 of the branch box A. However, the length L1 of the cover 10 may be at least once the length L2 of the branch box A. In other words, the length L1 of the cover 10 may be a length that is capable of covering the entire branch box A, and may be changed as appropriate.

In the above embodiment, an example was described in which the cover 10 is made of a steel plate. 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 was described in which the cross section of the cover 10 is U-shaped throughout the extension direction D2 of the cover 10. 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 part of the extension direction, or may be square-shaped in 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 part of the extension direction of the bus duct.

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 square-shaped, and may be, for example, an inverted U-shape, a square 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.

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. Also, for example, at least one of the ends in the extension direction D2 of the cover 10 may have a bent portion that bends inward in the width direction D3 of the cover 10.

Furthermore, in the above-mentioned 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 portion of each surface constituting the cover. In this way, the form of each surface constituting the cover can be changed as appropriate. Also, 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.

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 hooked on the latched portion when the bus duct B is covered with the cover 10. Then, when the cover 10 is lifted, the latched portion may be released from the latched portion, allowing the bus duct cover 1 to slide relative 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 changed as appropriate.

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, etc., can be changed as appropriate.

In the above embodiment, an example was 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 diagonally relative to the horizontal direction, or may be curved. In other words, the shape of the bus duct is not limited to a shape extending horizontally. Furthermore, in the above embodiment, a cover 10 that covers the bus duct B and the branch box A was exemplified. However, the cover may cover only the bus duct, or may cover a device in the bus duct other than the branch box. In other words, 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.

1, 1A, 1B... Bus duct cover, 10, 20... Cover, 10b... Lower end, 10c, 20c... End surface, 11, 21... Side part, 11b... Inner surface, 11c... Outer surface, 12, 22... Upper surface part, 12b ...Inner surface, 12c...Outer surface, 15...Buffer material, 15b...Extending portion, 15c...Bending portion, 2 3...Bottom surface part, A...branch box, A1...side surface, A2...bottom end, A3...top surface, B...bus duct, B1...plate-shaped part, B2...projection part, B3...side surface, B4...surface, B5...top surface, B6 ...Lower end, B7...Bottom surface, C...Connection part, D1...Vertical direction, D2...Extending direction, D3...Width direction, S...Gap.

Claims (6)

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. 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. 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. 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. 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. 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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