Distribution panel

Abstract

To provide a distribution board on which large-capacity functional units can be mounted without removing a vertical busbar cover.SOLUTION: A distribution board (100) includes a vertical bus bar cover body (1) that separates a unit compartment (3) in which a plurality of functional units (2) are arranged, a vertical busbar unit (4) in which the vertical bus bar (5) is arranged, a unit section (3), and a vertical bus section (4), and the vertical bus bar cover body (1) is formed with a connection insertion hole (7) that connects the functional unit (2) and the vertical bus bar (5), and a perforated cutout (10) is provided around the connection insertion hole (7) of the vertical busbar cover body (1), and a partial removal portion (9) is provided which is cut out from the perforated cutout (10).SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This application relates to a switchboard.

Background Art

[0002] As disclosed in Japanese Utility Model Publication No. 61-41306 of Patent Document 1, a switchboard (such as a control center or switchgear) has a unit compartment for accommodating a plurality of functional units and a vertical busbar compartment for accommodating a vertical busbar for supplying main current to each functional unit, which are separated by a vertical busbar cover (rear panel).

[0003] Since the vertical busbar cover is provided with an opening that only allows junctions for connecting the functional units to the vertical busbar to pass through, a protection structure is formed that prevents fingers or other foreign objects from entering the charging section even when the functional units are connected to the vertical busbar.

[0004] Generally, for improving workability during assembly, a vertical busbar cover having a size that spans a plurality of functional units is used.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The conventional switchboard described in Patent Document 1 above allows for the electrical connection between the vertical busbar and the functional unit by providing a junction in the functional unit and mounting it in the switchboard, thereby supplying current from the vertical busbar to the functional unit. However, because the performance of the junction limits the current that can be supplied from the vertical busbar, when mounting a functional unit that requires a large current supply in the switchboard, it is necessary to electrically connect a connecting conductor capable of supplying a larger current than the junction to the vertical busbar using bolts and nuts. However, the opening through which the junction passes is small, making it impossible to insert tools or hands to fasten the bolts and nuts, which presents a problem.

[0007] For the reasons mentioned above, the modification work to add a new high-capacity functional unit presented a problem: it was necessary to remove the vertical busbar cover, which in turn required pulling out the functional unit.

[0008] When pulling out or inserting a functional unit, it may be necessary to disconnect and reconnect the connectors or wire connections inside the functional unit. This widens the range of the functional unit that can be pulled out, increasing the risk of disconnection and reconnection errors.

[0009] This invention discloses a technology for solving the above-mentioned problems, and its purpose is to provide a power distribution board that can implement a high-capacity functional unit without removing the vertical busbar cover. [Means for solving the problem]

[0010] The power distribution panel disclosed herein comprises a unit section in which a plurality of functional units are arranged, a vertical busbar section in which a vertical busbar is arranged, and a vertical busbar cover body that separates the unit section and the vertical busbar section, wherein the vertical busbar cover body has connection holes for connecting the functional units and the vertical busbar, perforated notches are provided around the connection holes of the vertical busbar cover body, and a partially removable portion is provided that can be cut out from the perforated notches.

[0011] Furthermore, the power distribution panel disclosed in this application comprises a unit section in which a plurality of functional units are arranged, a vertical bus section in which a vertical busbar is arranged, and a vertical busbar cover body that separates the unit section and the vertical bus section, wherein the vertical busbar cover body has an opening at a position connecting the functional unit and the vertical busbar, and a sliding mechanism is provided in the opening of the vertical busbar cover body, and the sliding mechanism is composed of a pair of vertical busbar cover body side slide rails provided at the upper and lower parts of the opening, and a sliding body that is detachably inserted into the vertical busbar cover body side slide rails. [Effects of the Invention]

[0012] According to the power distribution panel disclosed in this application, a high-capacity functional unit can be installed without removing the vertical busbar cover. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing a switchboard having a vertical busbar cover that separates a unit section and a vertical busbar section according to Embodiment 1. [Figure 2] This is a side view showing a switchboard having a vertical busbar cover that separates a unit section and a vertical busbar section according to Embodiment 1. [Figure 3] This is a perspective view showing a functional unit according to Embodiment 1. [Figure 4] This is a perspective view showing a vertical busbar cover body according to Embodiment 1. [Figure 5] This is a perspective view showing the vertical busbar cover body with a portion of the partially removable section according to Embodiment 1 removed. [Figure 6] This is a perspective view showing the procedure for mounting the high-capacity functional unit according to Embodiment 1 onto a power distribution board, where (a) shows the state in which the partially removable part is removed, (b) shows the state in which the high-current supply connecting conductor is attached, and (c) shows the state in which the high-capacity functional unit is mounted. [Figure 7]This is a perspective view showing the procedure for mounting a functional unit to the mounting location of the high-capacity functional unit according to Embodiment 1, where (a) shows the state of removing the high-capacity functional unit, (b) shows the state of removing the high-current supply connection conductor, (c) shows the state of attaching the partially removable part, and (d) shows the state of mounting the functional unit. [Figure 8] This is a perspective view showing a vertical busbar cover body according to Embodiment 2. [Figure 9] This is a perspective view showing the slide body according to Embodiment 2. [Figure 10] This is a perspective view showing the vertical busbar cover body with a portion of the slide body according to Embodiment 2 removed. [Figure 11] This is a perspective view showing the procedure for mounting the high-capacity functional unit according to Embodiment 2 onto a power distribution board, where (a) shows the state in which the slide body is removed, (b) shows the state in which the high-current supply connection conductor is attached, and (c) shows the state in which the high-capacity functional unit is mounted. [Figure 12] This is a perspective view showing the procedure for mounting a functional unit to the mounting location of the large-capacity functional unit according to Embodiment 2, where (a) shows the state of removing the large-capacity functional unit, (b) shows the state of removing the high-current supply connection conductor, (c) shows the state of attaching the slide body, and (d) shows the state of mounting the functional unit. [Modes for carrying out the invention]

[0014] Embodiment 1. Hereinafter, Embodiment 1 of the present application will be described based on FIGS. 1 to 7. In each figure, the same or corresponding members and parts will be described with the same reference numerals. FIG. 1 is a perspective view showing a switchboard having a vertical bus cover body that partitions a unit section and a vertical bus section according to Embodiment 1. FIG. 2 is a side view showing a switchboard having a vertical bus cover body that partitions a unit section and a vertical bus section according to Embodiment 1. FIG. 3 is a perspective view showing a functional unit according to Embodiment 1. FIG. 4 is a perspective view showing a vertical bus cover body according to Embodiment 1. FIG. 5 is a perspective view showing the vertical bus cover body with a part of the partially removable part removed according to Embodiment 1. FIG. 6 is a perspective view showing the procedure for mounting a large-capacity functional unit according to Embodiment 1 on the switchboard. (a) shows the state of removing the partially removable part, (b) shows the state of attaching a connection conductor for large-current supply, and (c) shows the state of mounting the large-capacity functional unit. FIG. 7 is a perspective view showing the procedure for mounting a functional unit at the mounting location of the large-capacity functional unit according to Embodiment 1. (a) shows the state of removing the large-capacity functional unit, (b) shows the state of removing the connection conductor for large-current supply, (c) shows the state of attaching the partially removable part, and (d) shows the state of mounting the functional unit.

[0015] As shown in FIGS. 1 and 2, a case where four junction-connected functional units 2 are mounted on the lower side of the switchboard 100 is shown. In order to electrically connect the vertical bus 5 arranged in the vertical bus section 4 of the switchboard 100 and the functional unit 2 arranged in the unit section 3, by providing a junction 6 on the back surface of the functional unit 2 shown in FIG. 3, when the functional unit 2 is mounted on the switchboard 100, at the same time, the junction 6 of the functional unit 2 meshes with the vertical bus 5, so that an electrically connected state can be achieved.

[0016] When implementing a high-capacity functional unit 14 that cannot be energized at the junction 6 on the upper side of this switchboard 100, it is necessary to electrically connect the large-current supply connecting conductor 13 to the vertical busbar 5 by bolts, nuts, etc. instead of the junction 6. However, the size of the insertion hole 7 for connection passing through the junction 6 does not allow for the insertion of tools or hands for fastening bolts and nuts.

[0017] Therefore, in the conventional technology, when implementing the high-capacity functional unit 14, it is necessary to remove the entire vertical busbar cover. To remove the entire vertical busbar cover, it is also necessary to pull out the nearby functional unit 2 from the switchboard 100 once, which involves a great deal of trouble.

[0018] Therefore, in Embodiment 1 of the present application, as shown in FIG. 4, by providing a rectangular perforated notch 10 around the connection insertion hole 7 of the vertical busbar cover body 1, a partial removal part 9 of the vertical busbar cover body 1 is provided, so that it is possible to eliminate the need to remove the entire vertical busbar cover body 1.

[0019] Note that the large-current supply connecting conductors 13 connected to the vertical busbar 5 are arranged side by side in the width direction, with 3 conductors for a three-phase three-wire system and 4 conductors for a three-phase four-wire system. In order to connect the large-current supply connecting conductors 13 to the vertical busbar 5, it is necessary to provide a partial opening in the vertical busbar cover body 1 so that all the vertical busbars 5 can be seen. Therefore, the shape of the perforated notch 10 is a rectangle with a short height direction and a long width direction.

[0020] The perforated notch 10 is a measure to enable partial removal of the vertical busbar cover body 1, and this part is removed when implementing the high-capacity functional unit 14. By providing the perforated notch 10 at equal intervals in the height direction of the switchboard 100, it becomes possible to handle any installation position of the high-capacity functional unit 14. However, when the installation location of other functional units 2 is fixed, or when the installation position of the high-capacity functional unit 14 is restricted to a certain extent, the perforated notch 10 may be provided only at the necessary positions instead of at equal intervals at all positions.

[0021] To allow the partial removal section 9 of the vertical busbar cover body 1 to be removed with a general-purpose tool such as wire cutters, the length of the perforated notch 10 is set to approximately 50 mm, and the length of the connected section is set to approximately 2 mm. Furthermore, the thickness of the connected section is reduced by punching or similar tools when processing the vertical busbar cover body 1 with a turret punch press. This facilitates removal.

[0022] The fall prevention piece 8 is provided for each partial removal section 9 to prevent the partial removal section 9 from falling towards the vertical busbar section 4 when the partial removal section 9 is removed.

[0023] The fall prevention piece 8 is attached to each removable part 9 by welding, with one attachment point on each side of each removable part 9.

[0024] Furthermore, the fall prevention piece 8 will have a round hole 11, and the vertical busbar cover body 1 will have a screw hole 12. By doing so, when changing the functional unit 2 at the same location from a high-capacity functional unit 14 to a junction-connected functional unit 2, the partially removable part 9 can be reattached to the vertical busbar cover body 1.

[0025] The procedure for mounting the high-capacity functional unit 14 to the distribution board 100 to which Embodiment 1 is applied is shown in Figure 6. As shown in Figure 6(a), the partial removal section 9 of the vertical busbar cover body 1, through which the high-current supply connecting conductor 13 passes to the high-capacity functional unit 14, is cut out from the perforated notch 10 using a general-purpose tool such as wire cutters and removed. Next, as shown in Figure 6(b), the high-current supply connecting conductor 13 is connected to the vertical busbar 5 at the location where the partial removal section 9 was removed using bolts and nuts. Furthermore, as shown in Figure 6(c), the high-capacity functional unit 14 and the high-current supply connecting conductor 13 are connected, and the high-capacity functional unit 14 is mounted to the distribution board 100.

[0026] The procedure for installing the junction-connected functional unit 2 at the mounting location of the high-capacity functional unit 14 during the subsequent construction is shown in Figure 7. As shown in Figure 7(a), the connection between the high-capacity functional unit 14 and the high-current supply connecting conductor 13 is released, and the high-capacity functional unit 14 is pulled out from the unit section 3 of the distribution board 100. Next, as shown in Figure 7(b), the connection between the high-current supply connecting conductor 13 and the vertical busbar 5 is released, and the high-current supply connecting conductor 13 is removed from the distribution board 100. Next, as shown in Figure 7(c), the removed partial removal part 9 is attached to the vertical busbar cover body 1 in its original position by screwing a screw (not shown) into the round hole 11 of the fall prevention piece 8 and the screw hole 12 of the vertical busbar cover body 1. Furthermore, as shown in Figure 7(d), the junction-connected functional unit 2 is installed in the distribution board 100.

[0027] Conventional vertical busbar covers could not be partially opened to access the connection area of ​​the high-current supply connection conductor 13 of the high-capacity functional unit 14. However, by applying Embodiment 1, partial removal and opening becomes possible. This is expected to improve work efficiency, reduce the scope of work, and consequently reduce human error when installing the high-capacity functional unit 14 during modification work. Specifically, when installing the functional unit in the distribution board, it is possible to access the vertical busbar 5 within the vertical busbar section 4 by removing and opening the necessary partial removal section 9 without removing the vertical busbar cover body 1. This eliminates the need to pull out other functional units, reducing the amount of work required for modification work, and is expected to reduce the amount of wiring to be disconnected and the risk of wiring errors.

[0028] Embodiment 2. Embodiment 2 of the present application will be described based on Figures 8 to 12, in which the same or equivalent members and parts will be denoted by the same reference numerals in each figure. Figure 8 is a perspective view showing a vertical busbar cover body according to Embodiment 2. Figure 9 is a perspective view showing a slide body according to Embodiment 2. Figure 10 is a perspective view showing a vertical busbar cover body with a part of the slide body according to Embodiment 2 removed. Figure 11 is a perspective view showing the procedure for mounting a large-capacity functional unit according to Embodiment 2 on a power distribution board, where (a) shows the state of removing the slide body, (b) shows the state of attaching the high-current supply connecting conductor, and (c) shows the state of mounting the large-capacity functional unit. Figure 12 is a perspective view showing the procedure for mounting a functional unit at the mounting location of the large-capacity functional unit according to Embodiment 2, where (a) shows the state of removing the large-capacity functional unit, (b) shows the state of removing the high-current supply connecting conductor, (c) shows the state of attaching the slide body, and (d) shows the state of mounting the functional unit.

[0029] In Embodiment 2 of the present invention, as shown in Figures 8 to 10, the vertical busbar cover body 1 has an opening 70 at a position connecting the functional unit 2 and the vertical busbar 5, and a slide mechanism 15 constituting a partially removable part 20 is provided around the opening 70 of the vertical busbar cover body 1. The slide mechanism 15 consists of a pair of vertical busbar cover side slide rails 16 provided at the upper and lower parts of the opening 70 of the vertical busbar cover body 1, and a slide body 17 that is detachably inserted into the vertical busbar cover side slide rails 16. The slide body 17 has a pair of slide body side slide rails 18 that are detachably inserted into the pair of vertical busbar cover side slide rails 16, and a connecting insertion hole 71 that connects the functional unit 2 and the vertical busbar 5, and partial removal is possible by sliding the slide body 17 with a gripping part 19.

[0030] The sliding body 17 is provided at the connection point of the high-current supply connecting conductor 13 when the high-capacity functional unit 14 is mounted. This allows the partial removal section 20 to be removed by sliding at that point during modification work.

[0031] Furthermore, the slide body 17 is provided with a connection insertion hole 71 for passing a junction. This makes it possible to mount the junction-connected functional unit 2 on the distribution board 100 with the slide body 17 still attached. Also, since the number of slide bodies 17 required per stage is the same as the number of vertical busbars 5, three slide bodies 17 are provided on the vertical busbar cover body 1 in the case of a three-phase three-wire system, and four slide bodies 17 are provided in the case of a three-phase four-wire system.

[0032] The sliding body 17 is designed to move horizontally relative to the mounting surface. Furthermore, in order to allow the sliding body 17 to be mounted along the vertical busbar cover side sliding rail 16 provided on the vertical busbar cover body 1, sliding body side sliding rails 18 are provided above and below the sliding body 17.

[0033] Furthermore, to allow the operator to grasp the slide body 17 with their fingers when sliding it, a gripping portion 19 is provided by making the flat surface other than the slide rail 18 on the slide body side protrude in the forward direction. This gripping portion 19 is provided for each slide body 17 to improve the ease of opening and to prevent the slide body 17 from falling towards the vertical busbar section 4.

[0034] The procedure for mounting the high-capacity functional unit 14 to the distribution board to which Embodiment 2 is applied is shown in Figure 11. As shown in Figure 11(a), at the partial removal section 20 of the vertical busbar cover body 1 where the high-capacity functional unit 14 passes through the high-capacity functional unit 14, each slide body 17 of the slide mechanism 15 is slid by the gripping section 19 and removed from the vertical busbar cover body side slide rail 16. Next, as shown in Figure 11(b), the high-capacity functional unit 13 is connected to the vertical busbar 5 at the location where the slide body 17 was removed using bolts and nuts. Furthermore, as shown in Figure 11(c), the high-capacity functional unit 14 and the high-capacity functional unit 13 are connected and the high-capacity functional unit 14 is mounted on the distribution board 100.

[0035] The procedure for installing the junction-connected functional unit 2 at the mounting location of the high-capacity functional unit 14 during the subsequent construction is as shown in Figure 12. As shown in Figure 12(a), the connection between the high-capacity functional unit 14 and the high-current supply connecting conductor 13 is released, and the high-capacity functional unit 14 is pulled out from the unit section 3 of the distribution board 100. Next, as shown in Figure 12(b), the connection between the high-current supply connecting conductor 13 and the vertical busbar 5 is released, and the high-current supply connecting conductor 13 is removed from the distribution board 100. Next, as shown in Figure 12(c), the slide rail 18 on the slide body side of each slide body 17 of the slide mechanism 15 is inserted into the slide rail 16 on the vertical busbar cover side, and the slide body 17 is slid into place by the gripping part 19. Furthermore, as shown in Figure 12(d), the junction-connected functional unit 2 is installed in the distribution board 100.

[0036] Conventional vertical busbar covers could not be partially opened to access the connection area of ​​the high-current supply connection conductor 13 of the high-capacity functional unit 14. However, by applying Embodiment 2, partial removal and opening becomes possible. This is expected to improve work efficiency, reduce the scope of work, and consequently reduce human error when installing the high-capacity functional unit 14 during modification work. Specifically, when installing the functional unit in the distribution board, it is possible to access the vertical busbar 5 within the vertical busbar section 4 by removing the sliding body 17 of the sliding mechanism 15 in the necessary area without removing the vertical busbar cover body 1. This eliminates the need to pull out other functional units, reducing the amount of work required for modification work, and is expected to reduce the amount of wiring to be disconnected and the risk of wiring errors.

[0037] By applying Embodiment 2, the same effects as in Embodiment 1 can be obtained. Furthermore, the partial removal section 20 can be opened and closed simply by sliding the slide body 17, thereby improving work efficiency.

[0038] Although this application describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to the application of a particular embodiment, but can be applied individually or in various combinations to the embodiments. Accordingly, countless variations not illustrated are conceivable within the scope of the technology disclosed herein. These include, for example, modifications, additions, or omissions of at least one component, as well as the extraction of at least one component and its combination with components of other embodiments. [Industrial applicability]

[0039] This invention is suitable for realizing a power distribution board that can mount a high-capacity functional unit without removing the vertical busbar cover. [Explanation of symbols]

[0040] 1 Vertical busbar cover, 2 Functional unit, 3 Unit compartment, 4 Vertical busbar compartment, 5 Vertical busbar, 6 Junction, 7, 71 Through-hole for connection, 8 Anti-drop piece, 9 Partially removable section, 10 Perforated notch, 11 Round hole, 12 Screw hole, 13 High-current supply connection conductor, 14 High-capacity functional unit, 15 Slide mechanism, 16 Slide rail on vertical busbar cover side, 17 Slide body, 18 Slide rail on slide body side, 19 Gripping section, 20 Partially removable section, 70 Opening

Claims

1. A power distribution panel comprising a unit section where multiple functional units are arranged, a vertical bus section where vertical busbars are arranged, and a vertical bus cover body separating the unit section and the vertical bus section, wherein the vertical bus cover body has connection holes formed for connecting the functional units and the vertical busbars, and the vertical bus cover body has perforated notches around the connection holes, and a partially removable portion that can be cut out from the perforated notches.

2. The switchboard according to claim 1, characterized in that the aforementioned removable portion is provided with a fall prevention piece to prevent it from falling into the vertical busbar section.

3. The distribution board according to claim 2, characterized in that the fall prevention piece is provided with a mounting hole for reattaching the partially removable portion, which has been cut out from the perforated notch, to the vertical busbar cover body.

4. A power distribution panel comprising a unit section where multiple functional units are arranged, a vertical bus section where vertical busbars are arranged, and a vertical bus cover body that separates the unit section and the vertical bus section, wherein the vertical bus cover body has an opening at a position where the functional units and the vertical busbars are connected, a sliding mechanism is provided in the opening of the vertical bus cover body, and the sliding mechanism is composed of a pair of vertical bus cover body side sliding rails provided at the upper and lower parts of the opening, and a sliding body that is detachably inserted into the vertical bus cover body side sliding rails.

5. The switchboard according to claim 4, characterized in that the slide body has a slide body side slide rail that is detachably inserted into the vertical bus cover side slide rail, and a connecting insertion hole that connects the functional unit and the vertical bus.

6. The distribution board according to claim 4 or 5, characterized in that the sliding body is provided with a gripping portion for sliding.

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