Frame structure of switchboard, switchboard and switchgear

Abstract

To enhance load resistance.SOLUTION: A distribution frame structure (10) includes a bottom plate panel (11) on which a first bottom plate embossed portion (114) and a second bottom plate embossed portion (115) are formed, and a front lateral plate panel (15) on which a first lateral plate embossed portion (154) fitted to the first bottom plate embossed portion (114) and a second lateral plate embossed portion (155) fitted to the second bottom plate embossed portion (115) are formed.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a frame structure of a switchboard, a switchboard, and a switchgear. [Background technology]

[0002] Conventionally, there is known a distribution board that can easily assemble each panel constituting the frame structure of the distribution board. For example, Patent Document 1 discloses a thin panel frame structure of a distribution board in which the lower end flat portion and the upper end flat portion of a pair of side thin panel panels are overlapped on the folded portions of the bottom thin panel and the ceiling thin panel using the inner embossed portion and the outer embossed portion as positioning portions, and the inner embossed portion and the outer embossed portion are riveted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-7389 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, a switchboard having the above-mentioned frame structure has a problem in that although it is strong against loads applied in the front-rear direction, it is weak against loads applied in the lateral direction or hanging loads.

[0005] An object of one aspect of the present invention is to achieve improved load bearing capacity. [Means for solving the problem]

[0006] In order to solve the above problems, a frame structure of a distribution board according to one embodiment of the present invention comprises: a horizontal plate panel having a rectangular bottom or top plate, a first rising portion and a second rising portion rising in a vertical direction of the horizontal plate from a first side of the horizontal plate and a second side adjacent to the first side, respectively, wherein at least one first embossed portion and one second embossed portion are formed on the first rising portion and the second rising portion, respectively; and a side plate panel having a side plate and a third rising portion rising in a vertical direction of the side plate from a third side of the side plate, wherein the side plate is connected to the first rising portion and the third rising portion is connected to the second rising portion, at least one third embossed portion is formed on the side plate, the third embossed portion is fitted into the first embossed portion, and at least one fourth embossed portion is formed on the third rising portion, the fourth embossed portion is fitted into the second embossed portion.

[0007] According to the above configuration, the side panel can be fixed to the horizontal panel from two directions, the vertical direction of the first rising portion and the vertical direction of the second rising portion. Therefore, the frame structure of the switchboard can withstand loads applied from both of the two directions. In other words, the load resistance of the frame structure of the switchboard can be improved.

[0008] In addition, the side panel may further include a fourth rising portion rising vertically from a fourth edge adjacent to the third edge of the side panel, and the fourth rising portion may be connected to the horizontal panel.

[0009] According to the above configuration, the side panel contacts the horizontal panel on three surfaces, namely, the side panel, the third rising portion, and the fourth rising portion. This makes it easier to ensure the perpendicularity of the side panel, and further improves the load-bearing capacity of the frame structure of the switchboard.

[0010] In addition, the horizontal plate panel may be a bottom plate panel having the bottom plate, the fourth raised portion having a first distribution board fixing hole passing therethrough, and the bottom plate may have a second distribution board fixing hole at a position corresponding to the first distribution board fixing hole.

[0011] According to the above configuration, both of the two overlapping panels (the bottom panel and the side panel) are fixed in place, which makes it possible to strengthen the structure of the switchboard.

[0012] In addition, the horizontal plate panel may be a top plate panel having the top plate, the fourth raised portion may have a first hanging hardware fixing hole passing therethrough, and the top plate may have a second hanging hardware fixing hole at a position corresponding to the first hanging hardware fixing hole.

[0013] According to the above configuration, the first hanging hardware fixing hole, the second hanging hardware fixing hole, and the through hole provided in the hanging hardware are fixed. In other words, the hanging hardware is fixed by both panels (the top panel and the side panel) that are two layers stacked together. Therefore, the strength against the hanging load can be increased.

[0014] Furthermore, the third rising portion and the fourth rising portion do not have to be welded to each other, and the first rising portion and the second rising portion do not have to be welded to each other.

[0015] According to the above configuration, when the side panel is connected to the horizontal panel, the corresponding embossed portions can be smoothly fitted into each of the embossed portions protruding in two directions, the vertical direction of the first raised portion and the vertical direction of the second raised portion.

[0016] The side plate and the third rising portion may be located more inward than the first rising portion and the second rising portion, respectively.

[0017] If the side panel is located outside the horizontal panel, a gap will be created between the underside of the bottom plate and the installation surface of the switchboard. This creates a risk of deformation of the bottom plate if the electric equipment housed inside is heavy. With the above configuration, the side panel is located inside the horizontal panel, so the risk of such deformation can be reduced. Also, by providing precision only to the dimensions of each component of the horizontal panel, it is possible to improve the precision of the finished external dimensions of the switchboard frame structure.

[0018] In addition, the horizontal plate panel further includes a fifth rising portion rising in a vertical direction of the horizontal plate from the inside of the rectangle in the horizontal plate, and the side plate panel further includes a sixth rising portion rising in a vertical direction of the side plate from a fifth edge opposite the third edge of the side plate, the fifth rising portion being connected to the sixth rising portion, at least one fifth embossed portion being formed in the fifth rising portion, and at least one sixth embossed portion being formed in the sixth rising portion, and the sixth embossed portion being fitted into the fifth embossed portion.

[0019] According to the above-mentioned configuration, the verticality of the side panel can be more easily ensured. That is, even when assembling a frame structure for a large-sized switchboard, the load-bearing capacity of the frame structure for the switchboard can be improved.

[0020] Moreover, the first embossed portion may be fixed to the corresponding third embossed portion by riveting.

[0021] According to the above configuration, the panels can be assembled by a simple operation of fitting each of the first embossed portions into the corresponding third embossed portions and fastening them with rivets.

[0022] A power distribution board according to an aspect of the present invention may include a frame structure of the power distribution board and a power device. A switch gear according to an aspect of the present invention may include a plurality of the power distribution boards arranged in series and connected to each other. Effect of the Invention

[0023] According to one aspect of the present invention, it is possible to achieve improved load bearing capacity. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view showing a switchboard according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a frame structure of the switchboard. [Diagram 3] FIG. 4 is a perspective view showing a bottom panel in the frame structure of the switchboard. [Figure 4] FIG. 4 is a perspective view showing a top panel in the frame structure of the switchboard. [Diagram 5] 4 is a perspective view showing a lower portion of a side panel in the frame structure of the switchboard. FIG. [Figure 6] 6 is a perspective view showing a lower part of the side panel from an angle different from that of FIG. 5. [Figure 7] FIG. 4 is a perspective view showing an upper portion of the side panel. [Figure 8] 4 is a perspective view showing how the bottom panel and the side panel are connected in the frame structure of the switchboard. FIG. [Figure 9] 4 is a cross-sectional view showing the embossed portion of the bottom panel fitting into the embossed portion of the side panel. FIG. [Figure 10] FIG. 11 is a perspective view showing a frame structure of a switchboard according to another embodiment of the present invention. [Figure 11] FIG. 4 is a perspective view showing a bottom panel in the frame structure of the switchboard. [Figure 12] FIG. 4 is a perspective view showing a side panel in the frame structure of the switchboard. [Figure 13] FIG. 2 is a block diagram showing a switchgear including a plurality of the above-mentioned switchboards. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Fig. 13 is a block diagram showing a switchgear 1000 including a plurality of switchboards 1. As shown in Fig. 13, the switchgear 1 according to this embodiment can be applied to the switchgear 1000. The switchgear 1000 includes a plurality of switchboards 1 arranged in series and connected to each other. Note that, although the switchgear 1000 includes five switchboards 1 in Fig. 1, the number of switchboards 1 is not limited to this. The switchboard 1 includes a frame structure 10, 20 of the switchboard (see Figs. 2 and 10) and electric power equipment 5.

[0026] [Embodiment 1] Fig. 1 is a perspective view showing a switchboard 1 according to a first embodiment of the present invention. Fig. 2 is a perspective view showing a frame structure 10 of the switchboard. As shown in Fig. 1, the switchboard 1 includes a substantially rectangular parallelepiped housing 2 having the frame structure 10, and electric power equipment 5 (see Fig. 13) housed inside the housing. An inverted U-shaped hanging hardware 3 (hanging metal fittings) is provided on each vertex side of the top plate of the housing 2. Note that hanging bolts may be provided instead of the hanging hardware 3.

[0027] 2, the frame structure 10 includes a bottom panel 11 (horizontal panel), a top panel 12 (horizontal panel), a side panel 13, and a pair of intermediate panels 14. The side panel 13 includes a pair of front side panels 15 and a pair of rear side panels 16. The pair of intermediate panels 14 are disposed between the pair of front side panels 15 and the pair of rear side panels 16, respectively, at a distance from each other.

[0028] Hereinafter, the side of the switchboard 1 where the top panel 12 is located will be referred to as the upper side, and the opposite side will be referred to as the lower side. Additionally, the side of the switchboard 1 where the front side panel 15 is located relative to the rear side panel 16 will be referred to as the front, the opposite side will be referred to as the rear, the left side facing forward will be referred to as the left side, and the right side facing forward will be referred to as the right side.

[0029] The bottom panel 11 has a bottom plate 111 (horizontal plate), a first bottom plate rising portion 112 (first rising portion), and a second bottom plate rising portion 113 (second rising portion). The bottom plate 111 is a rectangular metal plate and has a front side 111a (second side), a left side 111b (first side), a rear side 111c (second side), and a right side 111d (first side). The first bottom plate rising portion 112 is formed of a member rising from the left side 111b and the right side 111d in the vertical direction (upward) of the bottom plate 111. The second bottom plate rising portion 113 is formed of a member rising from the front side 111a and the rear side 111c in the vertical direction (upward) of the bottom plate 111. The bottom panel 11 may be formed by performing an L-shaped bending process on a single metal plate.

[0030] The top panel 12 has a top plate 121 (horizontal plate), a first top plate rising portion 122 (first rising portion), and a second top plate rising portion 123 (second rising portion). The top plate 121 is a rectangular metal plate and has a front side 121a (second side), a left side 121b (first side), a rear side 121c (second side), and a right side 121d (first side). The first top plate rising portion 122 is formed of a member rising from the left side 121b and the right side 121d in the vertical direction (downward) of the top plate 121. The second top plate rising portion 123 is formed of a member rising from the front side 121a and the rear side 121c in the vertical direction (downward) of the top plate 121. The top plate panel 12 may be formed by performing an L-shaped bending process on a single metal plate.

[0031] The pair of front side panels 15 includes a side plate 151, a first side plate rising portion 152 (third rising portion), and a second side plate rising portion 153 (fourth rising portion). The side plate 151 is a rectangular metal plate, and includes an upper side 151a (fourth side), a front side 151b (third side), a lower side 151c (fourth side), and a rear side 151d (fifth side). The first side plate rising portion 152 is formed of a member rising from the front side 151b in the vertical direction (inner direction) of the side plate 151. The second side plate rising portion 153 is formed of a member rising from the upper side 151a and the lower side 151c in the vertical direction (inner direction) of the side plate 151. The front side panel 15 may be formed by bending a single metal plate into an L shape.

[0032] The pair of rear side panels 16 includes a side plate 161, a first side plate rising portion 162 (third rising portion), and a second side plate rising portion 163 (fourth rising portion). The side plate 161 is a rectangular metal plate, and includes an upper side 161a (fourth side), a front side 161b (fifth side), a lower side 161c (fourth side), and a rear side 161d (third side). The first side plate rising portion 162 is formed of a member rising from the rear side 161d in the vertical direction (inner direction) of the side plate 161. The second side plate rising portion 163 is formed of a member rising from the upper side 161a and the lower side 161c in the vertical direction (inner direction) of the side plate 161. The rear side panel 16 may be formed by bending a single metal plate into an L shape.

[0033] The pair of front side panels 15 refers to a set of a panel forming a part of the left side surface of the frame structure 10 and a panel forming a part of the right side surface of the frame structure 10. Hereinafter, when the term "front side panel 15" is used, it refers to at least one panel of the pair of front side panel 15. The same applies to the rear side panel 16.

[0034] The side panel 13 is located inside the bottom panel 11 and the top panel 12. That is, the side panels 151, 161 are located inside the first bottom panel rising portion 112 and the first top panel rising portion 122. Specifically, the outer surfaces of the side panels 151, 161 contact the inner surface of the first bottom panel rising portion 112 at their lower ends. The outer surfaces of the side panels 151, 161 contact the inner surface of the first top panel rising portion 122 at their upper ends. In addition, the first side panel rising portions 152, 162 are located inside the second bottom panel rising portion 113 and the second top panel rising portion 123. Specifically, the outer surfaces of the first side panel rising portions 152, 162 contact the inner surface of the second bottom panel rising portion 113 at their lower ends. The outer surfaces of the first side panel rising portions 152 and 162 contact the inner surface of the second top panel rising portion 123 at their upper ends.

[0035] If the side panel 13 is located outside the bottom panel 11 and the top panel 12, a gap will be created between the underside of the bottom panel 111 and the installation surface of the switchboard. This creates a risk of the bottom panel 11 being deformed if the electric power equipment housed inside is heavy. If the side panel 13 is located inside the bottom panel 11 and the top panel 12, the risk of such deformation can be reduced. Note that if the electric power equipment housed inside is light, the side panel 13 may be located outside the bottom panel 11 and the top panel 12.

[0036] The shapes of the side plates 151 and 161 are not limited to rectangular. The side plate 151 may have any shape that has at least an upper side 151a, a front side 151b, and a lower side 151c. Similarly, the side plate 161 may have any shape that has at least an upper side 161a, a lower side 151c, and a rear side 151d.

[0037] Fig. 3 is a perspective view showing the bottom panel 11. Fig. 3 is an enlarged view of the vicinity of the intersection between the front edge 111a and the left edge 111b of the bottom panel 11. As shown in Fig. 3, the first bottom panel rising portion 112 and the second bottom panel rising portion 113 are each formed with at least one first bottom panel embossed portion 114 (first embossed portion) and one second bottom panel embossed portion 115 (second embossed portion).

[0038] Three first bottom plate embossed portions 114 are formed at the front and rear ends (at each vertex side of the bottom plate 111) of the first bottom plate rising portion 112 (see also FIG. 8). Two second bottom plate embossed portions 115 are formed at each of the left and right ends (at each vertex side of the bottom plate 111) of the second bottom plate rising portion 113. The number of each embossed portion is not limited to these.

[0039] At each vertex side of the bottom plate 111, one second distribution board fixing hole 116 is formed at a position corresponding to a first distribution board fixing hole 156 described later. The second distribution board fixing hole 116 penetrates the bottom plate 111.

[0040] Fig. 4 is a perspective view showing the top panel 12. Fig. 4 is an enlarged view of the vicinity of the intersection between the front side 121a and the left side 121b of the top panel 12. As shown in Fig. 4, the first top panel rising portion 122 and the second top panel rising portion 123 are each formed with at least one first top panel embossed portion 124 (first embossed portion) and one second top panel embossed portion 125 (second embossed portion).

[0041] Three first top plate embossed portions 124 are formed on the front and rear ends (each vertex side of top plate 121) of first top plate rising portion 122. Two second top plate embossed portions 125 are formed on the left and right ends (each vertex side of top plate 121) of second top plate rising portion 123. The number of each embossed portion is not limited to these.

[0042] A pair of second hanging hardware fixing holes 126 are formed at each vertex side of the top plate 121 at positions corresponding to first hanging hardware fixing holes 157 described later. The pair of second hanging hardware fixing holes 126 penetrate the top plate 121.

[0043] Fig. 5 is a perspective view showing the lower part of the front side panel 15. Fig. 6 is a perspective view from a different angle than Fig. 5 showing the lower part of the front side panel 15. As shown in Figs. 5 and 6, at least one or more first side panel embossed portions 154 (third embossed portions) and second side panel embossed portions 155 (fourth embossed portions) are formed on the side panel 151 and the first side panel rising portion 152, respectively.

[0044] Three first side panel embossed portions 154 are formed at the bottom of the side panel 151. These three first side panel embossed portions 154 are formed to correspond to the positions of the three first bottom panel embossed portions 114, respectively. Furthermore, two second side panel embossed portions 155 are formed at the bottom of the first side panel rising portion 152. These two second side panel embossed portions 155 are formed to correspond to the positions of the two second bottom panel embossed portions 115, respectively. The number of each embossed portion is not limited to these.

[0045] A first distribution board fixing hole 156 is formed through the second side panel rising portion 153 rising from the lower side 151c. The first distribution board fixing hole 156 and the second distribution board fixing hole 116 are fixed to the base structure by fastening members (bolts and nuts), for example. This fixes both of the two overlapping panels, making it possible to strengthen the structure of the distribution board 1.

[0046] FIG. 7 is a perspective view showing the upper part of the front side panel 15. As shown in FIG. 7, the upper part of the front side panel 15 also has a first side panel embossed part 154 and a second side panel embossed part 155 formed therein, similar to the lower part of the front side panel 15. In addition, a pair of first hanging hardware fixing holes 157 are formed through the second side panel rising part 153 rising from the upper side 151a. The pair of first hanging hardware fixing holes 157, the pair of second hanging hardware fixing holes 126, and the pair of through holes provided in the hanging hardware 3 (see FIG. 1) are fixed by, for example, fastening members (bolts and nuts). As a result, the hanging hardware 3 is fixed by both panels that are two sheets stacked on top of each other, so that the strength against the hanging load can be increased.

[0047] FIG. 8 is a perspective view showing how the bottom panel 11 and the front side panel 15 are connected in the frame structure 10 of the switchboard. When the bottom panel 11 and the front side panel 15 are connected, the first side panel embossed portion 154 (see FIG. 5 and FIG. 6) is fitted into the first bottom panel embossed portion 114, and the second side panel embossed portion 155 (see FIG. 5 and FIG. 6) is fitted into the second bottom panel embossed portion 115. Each embossed portion is fixed to the corresponding embossed portion, for example, by riveting. The fixing method of the embossed portions is not limited to riveting. For example, fastening with a bolt and a nut may be used. Similarly, each embossed portion is fitted into and fixed to the corresponding embossed portion of the top panel 12 and the front side panel 15.

[0048] With this configuration, the front side panel 15 can be fixed to the bottom panel 11 and the top panel 12 from two directions, the front-rear direction and the left-right direction. Therefore, the frame structure 10 of the switchboard can withstand loads applied in both the front-rear direction and the left-right direction. In other words, the load-bearing capacity of the frame structure 10 of the switchboard can be improved. Also, the panels can be assembled by a simple operation of fitting each embossed portion into a corresponding embossed portion and riveting them.

[0049] Fixation can also be performed between the first distribution board fixing hole 156 provided in the second side panel rising portion 153 and the second distribution board fixing hole 116 provided in the bottom plate 111. Similarly, fixation can also be performed between a pair of first hanging hardware fixing holes 157 provided in the second side panel rising portion 153 and a pair of second hanging hardware fixing holes 126 provided in the top plate 121.

[0050] With this configuration, the front side panel 15 contacts the bottom panel 11 and the top panel 12 on three surfaces: the side surface (side panel 151), the front surface (first side panel rising portion 152), and the top and bottom surfaces (second side panel rising portion 153). This makes it easy to ensure the verticality of the front side panel 15, and further improves the load-bearing capacity of the frame structure 10 of the switchboard.

[0051] In addition, the side panel 13 is located inside the bottom panel 11 and the top panel 12. Therefore, by providing precision only to the dimensions of each component of the bottom panel 11 and the top panel 12, it is possible to improve the precision of the finished outer dimensions of the frame structure 10 of the switchboard.

[0052] It is preferable that the first side panel rising portion 152 and the second side panel rising portion 153 are not welded to each other (see Figs. 5 and 6). Similarly, it is preferable that the first bottom panel rising portion 112 and the second bottom panel rising portion 113 are not welded to each other. Similarly, it is preferable that the first top panel rising portion 122 and the second top panel rising portion 123 are not welded to each other (see Fig. 4). This allows the corresponding embossed portions to be smoothly fitted into the embossed portions protruding in two directions, the front-rear direction and the left-right direction, when the front side panel 15 is connected to the bottom panel 11 and the top panel 12.

[0053] 6 to 8 show the configuration of the front side panel 15, but the rear side panel 16 may have a similar configuration. That is, at least one or more first side panel embossed portions (third embossed portions) and second side panel embossed portions (fourth embossed portions) may be formed on the side panel 161 and the first side panel rising portion 162, respectively (not shown). Also, the second side panel rising portion 163 may have a first distribution board fixing hole and a pair of first hanging hardware fixing holes (not shown).

[0054] 9 is a cross-sectional view showing the first bottom panel embossed portion 114 of the bottom panel 11 being fitted into the first side panel embossed portion 154 of the front side panel 15. As shown in FIG. 9, the first bottom panel embossed portion 114 is formed such that a part of the first bottom panel rising portion 112 protrudes toward the inside of the frame structure 10. The first side panel embossed portion 154 is formed such that a part of the side panel 151 protrudes toward the inside of the frame structure 10 at a position corresponding to the first bottom panel rising portion 112 in the side panel 151. The first bottom panel embossed portion 114 and the first side panel embossed portion 154 are formed to be, for example, circular in front view.

[0055] Rivet through holes 114a, 154a for passing the rivet 4 are formed at the same position and with the same diameter at the center of the first bottom plate embossed portion 114 and the first side plate embossed portion 154. The rivet 4 is inserted from the outside toward the inside of the frame structure 10 so as to pass through the rivet through holes 114a, 154a. The head of the rivet 4 is located inside the outer surface of the first bottom plate rising portion 112. This ensures that the head of the rivet 4 does not interfere with the arrangement of multiple switchboards 1.

[0056] The first side panel embossed portion 154 is located inside the first bottom panel embossed portion 114. The shape of the outer surface of the first side panel embossed portion 154 is formed to be larger than the shape of the inner surface of the first bottom panel embossed portion 114. In other words, the first bottom panel embossed portion 114 can be fitted into the first side panel embossed portion 154.

[0057] The first bottom plate embossed portion 114 and the first side plate embossed portion 154 may be formed so as to protrude outward from the frame structure 10 .

[0058] In addition, while FIG. 9 shows the configurations of the first bottom plate embossed portion 114 and the first side plate embossed portion 154, the remaining embossed portions formed in the frame structure 10 may have the same configuration.

[0059] [Embodiment 2] Other embodiments of the present invention will be described below. For ease of explanation, the same reference numerals are given to members having the same functions as those described in the above embodiment, and the description thereof will not be repeated.

[0060] 10 is a perspective view showing a frame structure 20 of a switchboard according to a second embodiment of the present invention. The frame structure 20 of the switchboard differs from the frame structure 10 of the switchboard in that it includes a bottom panel 21 (horizontal panel), a top panel 22 (horizontal panel), and a side panel 23 instead of the bottom panel 11, the top panel 12, and the side panel 13. The side panel 23 differs from the side panel 13 in that it includes a front side panel 25 instead of the front side panel 15.

[0061] The bottom panel 21 differs from the bottom panel 11 in that it further has a third bottom panel rising portion 211 (fifth rising portion). The top panel 22 differs from the top panel 12 in that it further has a third top panel rising portion 221 (fifth rising portion). The front side panel 25 differs from the front side panel 15 in that it further has a third side panel rising portion 251 (sixth rising portion).

[0062] Fig. 11 is a perspective view showing the bottom panel 21 in the frame structure 20 of the switchboard. As shown in Fig. 11, the third bottom panel rising portion 211 is formed of a member rising in the vertical direction (upward) of the bottom plate 111 from the inside of the rectangle of the bottom plate 111. Specifically, the third bottom panel rising portion 211 is parallel to the second bottom panel rising portion 113, and is disposed at a predetermined distance from the second bottom panel rising portion 113 corresponding to the length of the front-rear direction of the front side panel 25.

[0063] A cross metal fitting 213 having a third bottom plate rising portion 211 and an attachment portion 212 may be attached to the inner surface of the bottom plate 111. In this case, the third bottom plate rising portion 211 is formed by a member rising from the front end of the attachment portion 212 in the vertical direction of the bottom plate 111. In addition, a plurality of stud bolts 214 (four in FIG. 11) for attaching the attachment portion 212 are provided in parallel in the left-right direction on the inner surface of the bottom plate 111. A plurality of attachment holes 212a are provided in the attachment portion 212 at positions corresponding to the plurality of stud bolts 214. The cross metal fitting 213 is attached to the inner surface of the bottom plate 111 by inserting the stud bolts 214 corresponding to the attachment holes 212a. The cross metal fitting 213 may be formed by performing an L-shaped bending process on a single sheet metal.

[0064] At least one or more third bottom plate embossed portions 215 (fifth embossed portions) are formed on the third bottom plate rising portion 211. In the example of Fig. 11, two third bottom plate embossed portions 215 are formed on each of the left and right ends of the third bottom plate rising portion 211. The number of third bottom plate embossed portions 215 is not limited to this.

[0065] 11 shows the configuration of the bottom panel 21, but the top panel 22 may have a similar configuration. That is, the third top panel rising portion 221 (see FIG. 10) is formed of a member rising in the vertical direction (downward) of the top panel 121 from the inside of the rectangle in the top panel 121. Also, at least one or more third top panel embossed portions (fifth embossed portions) are formed in the third top panel rising portion 221 (not shown).

[0066] Fig. 12 is a perspective view showing the front side panel 25 in the switchboard frame structure 20. As shown in Fig. 12, the third side panel rising portion 251 is formed by a member rising from the rear edge 151d of the side panel 151 in the vertical direction (inner direction) of the side panel 151.

[0067] At least one or more third side panel embossed portions 252 (sixth embossed portions) are formed on the third side panel rising portion 251. In the example of Fig. 12, two third side panel embossed portions 252 are formed on the lower portion of the third side panel rising portion 251. These two third side panel embossed portions 252 are formed to correspond to the positions of the two third bottom panel embossed portions 215, respectively.

[0068] The front side panel 25 is connected to the bottom panel 21 and the top panel 22 such that the third side panel rising portion 251 is located forward of the third bottom panel rising portion 211 and the third top panel rising portion 221. When the bottom panel 21 and the front side panel 25 are connected, the third side panel embossed portion 252 is fitted into the third bottom panel embossed portion 215. The third side panel embossed portion 252 is fixed to the third bottom panel embossed portion 215 by, for example, riveting. Similarly, for the top panel 22 and the front side panel 25, each embossed portion is fitted into and fixed to the corresponding embossed portion.

[0069] The third side plate embossed portion 252 and the third bottom plate embossed portion 215 are formed to protrude rearward. The shape of the front surface of the third bottom plate embossed portion 215 is formed to be larger than the shape of the rear surface of the third side plate embossed portion 252. In other words, the third side plate embossed portion 252 can be fitted into the third bottom plate embossed portion 215.

[0070] With this configuration, it is easier to ensure the perpendicularity of the front side panel 25. That is, even when assembling a frame structure 20 for a large-sized switchboard, the load-bearing capacity of the frame structure 20 for the switchboard can be improved.

[0071] (Additional Notes) The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0072] 1 Switchboard 4 Rivets 5 Power equipment 10, 20 Frame structure of switchboard 11, 21 Bottom panel (horizontal panel) 12, 22 Top panel (horizontal panel) 13, 23 Side panel 15, 25 Front side panel 16 Rear side panel 111 Bottom plate (horizontal plate) 111a, 121a Front edge (second edge) 111b, 121b left side (first side) 111c, 121c rear side (second side) 111d, 121d Right side (first side) 112 First bottom plate rising part (first rising part) 113 Second bottom plate rising part (second rising part) 114 First bottom plate embossed part (first embossed part) 115 Second bottom plate embossed part (second embossed part) 116 2nd power distribution board fixing hole 121 Top board (horizontal board) 122 First tabletop rising part (first rising part) 123 Second tabletop rising part (Second rising part) 124 First top plate embossed part (first embossed part) 125 Second top plate embossed part (Second embossed part) 126 Second hanging hardware fixing hole 151, 161 Side plate 151a, 161a Top side (4th side) 151b Front edge (third edge) 151c, 161c bottom side (fourth side) 151d Rear side (5th side) 161b Front edge (5th edge) 161d Rear side (third side) 152, 162 First side panel rising portion (third rising portion) 153, 163 Second side panel rising part (fourth rising part) 154 First side plate embossed section (third embossed section) 155 Second side plate embossed section (fourth embossed section) 156 1st switchboard fixing hole 157 First hanging hardware fixing hole 211 3rd bottom plate rising part (5th rising part) 215 3rd bottom plate embossed part (5th embossed part) 221 3rd tabletop rising part (5th rising part) 251 3rd side panel rising part (6th rising part) 252 Third side plate embossed section (sixth embossed section) 1000 Switchgear

Claims

1. A horizontal plate panel having a rectangular bottom or top horizontal plate, and a first rising portion and a second rising portion rising in a vertical direction of the horizontal plate from a first side of the horizontal plate and a second side adjacent to the first side, a horizontal plate panel having at least one first embossed portion and at least one second embossed portion formed on the first raised portion and the second raised portion, respectively; A side panel having a side plate and a third rising portion rising from a third side of the side plate in a vertical direction of the side plate, The side plate is connected to the first rising portion, The third rising portion is connected to the second rising portion, At least one third embossed portion is formed on the side plate, and the third embossed portion is fitted to the first embossed portion; a side panel having at least one or more fourth embossed portions formed on the third raised portion, the fourth embossed portions being fitted to the second embossed portions; Equipped with A frame structure of a switchboard, wherein the side plate and the third rising portion are located inside the first rising portion and the second rising portion, respectively.

2. 2. The frame structure of a switchboard according to claim 1, wherein the horizontal plate panel is a single piece of metal plate, and the side plate panel is a single piece of metal plate.

3. The side panel further includes a fourth rising portion rising in a vertical direction of the side panel from a fourth edge adjacent to the third edge of the side panel, The frame structure of a switchboard according to claim 1 or 2, wherein the fourth rising portion is connected to the horizontal plate.

4. The horizontal panel is a bottom panel having the bottom plate, The fourth rising portion has a first distribution board fixing hole passing therethrough, The frame structure of a switchboard according to claim 3 , wherein the bottom plate has a second switchboard fixing hole at a position corresponding to the first switchboard fixing hole.

5. A horizontal plate panel having a horizontal plate which is a rectangular bottom plate or top plate, and a first rising portion and a second rising portion which rise in a vertical direction of the horizontal plate from a first side of the horizontal plate and a second side adjacent to the first side, respectively, a horizontal plate panel having at least one first embossed portion and at least one second embossed portion formed on the first raised portion and the second raised portion, respectively; A side panel having a side plate and a third rising portion rising from a third side of the side plate in a vertical direction of the side plate, The side plate is connected to the first rising portion, The third rising portion is connected to the second rising portion, At least one third embossed portion is formed on the side plate, and the third embossed portion is fitted to the first embossed portion; a side panel having at least one or more fourth embossed portions formed on the third raised portion, the fourth embossed portions being fitted to the second embossed portions; Equipped with The side panel further includes a fourth rising portion rising in a vertical direction of the side panel from a fourth edge adjacent to the third edge of the side panel, The fourth rising portion is connected to the horizontal plate, The horizontal panel is a top panel having the top plate, The fourth rising portion has a first hanging hardware fixing hole passing therethrough, A frame structure of a distribution board, wherein the top plate has a second hanging hardware fixing hole at a position corresponding to the first hanging hardware fixing hole.

6. The frame structure of a switchboard according to claim 3 , wherein the third rising portion and the fourth rising portion are not welded to each other.

7. The frame structure of a switchboard according to claim 1 , wherein the first rising portion and the second rising portion are not welded to each other.

8. A horizontal plate panel having a horizontal plate which is a rectangular bottom plate or top plate, and a first rising portion and a second rising portion which rise in a vertical direction of the horizontal plate from a first side of the horizontal plate and a second side adjacent to the first side, respectively, a horizontal plate panel having at least one first embossed portion and at least one second embossed portion formed on the first raised portion and the second raised portion, respectively; A side panel having a side plate and a third rising portion rising from a third side of the side plate in a vertical direction of the side plate, The side plate is connected to the first rising portion, The third rising portion is connected to the second rising portion, At least one third embossed portion is formed on the side plate, and the third embossed portion is fitted to the first embossed portion; a side panel having at least one or more fourth embossed portions formed on the third raised portion, the fourth embossed portions being fitted to the second embossed portions; Equipped with The horizontal plate panel further includes a fifth rising portion rising in a vertical direction of the horizontal plate from the inside of the rectangle of the horizontal plate, The side panel further includes a sixth rising portion rising in a vertical direction of the side panel from a fifth edge of the side panel facing the third edge, The fifth rising portion is connected to the sixth rising portion, At least one or more fifth embossed portions are formed on the fifth raised portion, A frame structure of a distribution board, wherein at least one sixth embossed portion is formed on the sixth raised portion, and the sixth embossed portion is fitted into the fifth embossed portion.

9. The frame structure of a switchboard according to claim 1 , wherein the first embossed portion is fixed to the corresponding third embossed portion by riveting.

10. A switchboard comprising the frame structure for a switchboard according to any one of claims 1 to 9 and an electric power device.

11. A switchgear comprising a plurality of switchboards according to claim 10, the plurality of switchboards being arranged in series and connected to each other.

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