JP2018007389A - Thin plate frame structure of switchboard - Google Patents

Abstract

The present invention provides a thin panel frame structure of a switchboard that can at least increase the accuracy of the finished outer shape width of the switchboard and can easily perform panel assembly work. A bottom plate of a pair of front pillar side thin sheet panels, a pair of middle pillar side thin sheet panels, and a pair of rear pillar side thin sheet panels is formed at bent portions of a bottom thin sheet panel and a ceiling thin sheet panel. The parts 13a, 14a, 15a and the upper end flat parts 13b, 14b, 15b are overlapped using the inner embossed parts 31 and the outer embossed parts 30 as positioning parts, and the inner embossed parts 31 and the outer embossed parts 31 are overlapped. The processing unit 30 is riveted. [Selection] Figure 1

Description

  The present invention relates to a thin panel frame structure of a switchboard that can increase at least the finished outer shape width dimensional accuracy of the switchboard and can easily perform panel assembly work.

  Conventional switchboards are painted on angle steel, combined with vertical beams, horizontal beams, and beams in the depth direction, welded to the beam joints, etc., to build the housing, and then the peripheral surface of the box-shaped frame It was common to assemble the side, bottom plate, ceiling plate, and back cover.

  However, recent switchboards have been promoted to reduce board production costs, reduce weight, eliminate welding, and eliminate painting, and combine side panel panels, bottom panel panels, and ceiling panel panels created by bending sheet metal to sheet metal. In many cases, a panel assembly type housing structure in which the panels are screwed or riveted to each other is manufactured (see Patent Document 1).

JP-A-9-322324

  By the way, the casing of the switchboard is required to have accuracy in finished dimensions in addition to ensuring assemblability and strength. This is because when there is an error or variation in the external width of each switchboard when the switchboards are arranged, the switchboards mounted side by side on the common base frame laid on the installation floor will not fit in the correct position. This is because there is a problem that an unnecessary gap is generated on the contrary, or conversely, it protrudes from the common base frame.

  Here, in the panel case structure of the conventional switchboard, as shown in FIG. 8, the joint between the side plate panel 101 and the bottom plate panel 102 bends the bottom side of the side plate panel 101 into a U-shape, The left and right sides in the width direction of the bottom plate panel 102 are bent into an L shape, and the plate surfaces of the bent portions that are bent are overlapped and fastened with screws.

  The bending portion is formed by using a dedicated press machine for sheet metal bending, and an operator positioning and setting a work on the press machine to perform the bending work. The L-shaped bending process is performed in one bending process, and the U-shaped bending process is performed in two bending processes. This sheet metal bending process involves a lot of errors in dimensions and squareness. In the panel housing structure shown in FIG. 8, as the number of bending processes is increased, errors in dimensions and squareness are accumulated in the width direction, and it is difficult to finish the outer width dimension Wa of the switchboard with the dimensional accuracy as designed. There are many cases.

  On the other hand, in the conventional thin panel case structure of the switchboard, there is a problem that when assembling the switchboard, it takes time to align the panels and it is difficult to maintain the accuracy of the assembly position of the panels.

  The present invention has been made in view of the above, and provides a thin panel frame structure of a switchboard that can at least improve the finished outer shape width dimension accuracy of the switchboard and can easily perform panel assembly work. For the purpose.

  In order to solve the above-mentioned problems and achieve the object, the thin panel frame structure of the switchboard according to the present invention is a bottom plate thin panel comprising a thin steel plate and a non-sterile steel plate plated on the surface, a pair of side plate thin panel, And a thin panel frame structure of the switchboard that assembles the ceiling panel thin panels to form the basic structure of the switchboard, wherein the bottom plate thin panel faces the side end portions of the pair of side plate thin panels upward A bent portion formed by L-shaped bending is formed, and a plurality of inner embossed portions extruded toward the inside of the switchboard are formed in the bent portion, and the ceiling plate thin panel is a pair of side plate thin panel side A plurality of inner embossing portions formed by bending an L-shaped portion with the side end portion of the bent portion facing downward and extruding the bent portion toward the inside of the switchboard. And the pair of side plate thin panel are respectively connected to a lower end flat portion in contact with an outer surface of the bent portion of the bottom plate thin plate panel and an upper end flat portion in contact with an outer surface of the bent portion of the ceiling plate thin plate panel. A plurality of outer embossed portions having a rivet contact surface having the same shape as the inner embossed portion, extruded toward the inside of the switchboard, are formed corresponding to the positions of the inner embossed portions, and the bottom plate thin plate panel and The lower end flat part and the upper end flat part of a pair of side plate thin plate panels are overlapped with the bent portion of the ceiling plate thin plate panel using each inner embossed part and each outer embossed part as positioning parts, and each inner embossed part And the outer embossed portion are riveted.

  Further, the thin panel frame structure of the switchboard according to the present invention is the above invention, wherein the pair of side plate thin panels are a pair of front pillar side plate thin panels each including a pair of sides on the front side of the switchboard, after the switchboard. 3 pairs of a pair of rear pillar side thin sheet panels each including a pair of sides on the side, a pair of middle pillar side thin sheet panels disposed between the pair of front pillar side thin sheet panels and the pair of rear pillar side thin sheet panels, respectively. It is characterized in that it is formed of a panel separated from each other.

  Further, the thin panel panel frame structure of the switchboard according to the present invention is the above-described invention, wherein the pair of middle pillar side thin plate panels is formed with an opening for busbar arrangement at a central portion, and both side portions are inside the switchboard. It is characterized by being bent into a U shape.

  The thin panel panel frame structure of the switchboard according to the present invention is the above-described invention, wherein the pair of front pillar side thin plate panels are bent into a U shape with the front side portion of the switchboard facing the inside of the switchboard. The rear side portion of the switchboard is bent into a Z shape with the inner side of the switchboard.

  Further, the thin panel panel frame structure of the switchboard according to the present invention is the above invention, wherein the pair of rear columnar thin plate panels are folded in a U shape with the rear side portion of the switchboard facing the inside of the switchboard. It is machined and is bent into a Z shape with the front side portion of the switchboard facing the inside of the switchboard.

  Further, the thin panel frame structure of the switchboard according to the present invention includes a pair of the inner embossed portion and the outer embossed portion that are combined in different sizes at the positions where they are combined. It is characterized by.

  According to the present invention, there are few bending portions in the width direction during panel assembly, and at least the finished outer shape width dimension accuracy of the switchboard can be increased and positioning between the panels using the embossed portion is possible. Assembly work can be performed easily.

FIG. 1 is a perspective view showing an overall configuration of a switchboard according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a combined state of the front pillar side thin plate panel and the bottom plate thin plate panel. FIG. 3 is a cross-sectional view taken along line AA showing the structure of the riveting position when the front pillar side thin plate panel and the bottom plate thin plate panel are assembled. FIG. 4 is a cross-sectional view taken along the line B-B showing an assembled state of the front pillar side thin plate panel, the bottom plate thin plate panel, and the ceiling plate thin plate panel. FIG. 5 is a perspective view showing the configuration of the front pillar side thin plate panel. FIG. 6 is a perspective view showing the configuration of the middle column side thin plate panel. FIG. 7 is a perspective view showing the configuration of the rear columnar thin plate panel. FIG. 8 is a diagram showing an example of assembly of a conventional panel housing structure.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a basic housing structure of a switchboard 1 according to an embodiment of the present invention. The switchboard 1 includes a bottom plate thin plate panel 11, a ceiling plate thin plate panel 12, and a pair of side plates including a pair of front column side plate thin plate panels 13, a pair of middle column side plate thin plate panels 14, and a pair of rear column side plate thin plate panels 15. The basic structure of the housing is formed by the combination of the thin plate panels 16.

  The pair of front pillar side thin plate panels 13 includes a pair of sides 21 on the front side (+ Y direction) of the switchboard 1. The pair of rear pillar side thin plate panels 15 includes a pair of sides 22 on the rear side (−Y direction) of the switchboard 1. The pair of middle column side thin plate panels 14 are arranged separately from each other between the pair of front column side thin plate panels 13 and the pair of rear column side thin plate panels 15.

  The bottom plate thin plate panel 11 is formed with a bent portion 11a obtained by bending an end portion on both sides of the pair of side plate thin plate panels 16 upward (+ Z direction). The bent portion 11a is formed with a plurality of inner embossed portions 31 that are pushed inward in the X-axis direction of the switchboard 1.

  The ceiling thin plate 12 is formed with a bent portion 12a formed by bending the ends on both sides of the pair of side thin plate panels 16 downward (-Z direction). Further, a plurality of inner embossed portions 31 that are pushed inward in the X-axis direction of the switchboard 1 are formed in the bent portion 12a.

  The pair of front pillar side thin plate panels 13 includes a lower end flat portion 13 a that contacts the outer surface of the bent portion 11 a of the bottom plate thin plate panel 11 and an upper end flat portion 13 b that contacts the outer surface of the bent portion 12 a of the ceiling plate thin plate panel 12. A plurality of outer embossed portions 30 having a rivet contact surface having the same shape as the inner embossed portion 31, extruded inward in the X-axis direction of the switchboard 1, are respectively provided on the lower end flat portion 13 a and the upper end flat portion 13 b. It is formed corresponding to the position of the inner embossing part 31 formed in the bent parts 11a and 12a.

  Similarly, the pair of middle column side thin plate panels 14 includes a lower end flat portion 14a that contacts the outer surface of the bent portion 11a of the bottom plate thin plate panel 11 and an upper end flat portion 14b that contacts the outer surface of the bent portion 12a of the ceiling plate thin plate panel 12. Have. A plurality of outer embossed portions 30 having a rivet contact surface having the same shape as the inner embossed portion 31 extruded inward in the X-axis direction of the switchboard 1 to each of the lower end flat portion 14a and the upper end flat portion 14b, It is formed corresponding to the position of the inner embossing part 31 formed in the bent parts 11a and 12a.

  Similarly, the pair of rear pillar side thin plate panels 15 includes a lower end flat portion 15a that contacts the outer surface of the bent portion 11a of the bottom plate thin plate panel 11 and an upper end flat portion 15b that contacts the outer surface of the bent portion 12a of the ceiling plate thin plate panel 12. Have. A plurality of outer embossed portions 30 having a rivet contact surface having the same shape as the inner embossed portion 31, extruded inward in the X-axis direction of the switchboard 1, are respectively provided on the lower end flat portion 15 a and the upper end flat portion 15 b. It is formed corresponding to the position of the inner embossing part 31 formed in the bent parts 11a and 12a.

  FIG. 2 is an enlarged perspective view showing a combined state of the bottom plate thin plate panel 11 and the front pillar side plate thin plate panel 13. FIG. 3 is a cross-sectional view taken along line AA showing the structure of the riveting position when the front pillar side thin plate panel 13 and the bottom plate thin plate panel 11 are assembled. Further, FIG. 4 is a cross-sectional view taken along the line B-B showing an assembled state of the front post side thin plate panel 13, the bottom plate thin plate panel 11, and the ceiling plate thin plate panel 12.

  The switchboard 1 includes a pair of front pillar side thin sheet panels 13, a pair of middle pillar side thin sheet panels 14, and a pair of rear pillar side thin sheet panels 15 on the bent portions 11 a and 12 a of the bottom thin sheet panel 11 and the ceiling thin sheet panel 12. The lower end flat portions 13a, 14a, and 15a and the upper end flat portions 13b, 14b, and 15b are overlapped using the inner embossed portions 31 and the outer embossed portions 30 as positioning portions, and the inner embossed portions are overlapped. 31 and each outer embossing part 30 are riveted. For example, as shown in FIG. 2, the outer surface of the bent portion 11a of the bottom plate thin plate panel 11 and the lower end flat portion 13a of the front post side plate thin plate panel 13 that is in contact with the outer surface are formed in the bent portion 11a. Each inner embossed portion 31 and each outer embossed portion 30 formed on the lower flat surface portion 13a are combined to function as a positioning portion, and each is riveted by the rivet 2.

  As shown in FIG. 3, the riveting positions of the lower end flat portion 13a of the front columnar thin plate panel 13 and the bent portion 11a of the bottom plate thin plate panel 11 were respectively pushed toward the inner side (C direction) of the switchboard 1. The outer embossing part 30 and the inner embossing part 31 having the rivet contact surface 32 having the same shape are overlapped and formed. For example, the outer embossing part 30 and the inner embossing part 31 are extruded in a circular shape.

  At the center of the outer embossed portion 30 and the inner embossed portion 31, through holes 30a and 31a that penetrate the rivet 2 are formed at the same position and the same diameter. The position of the head of the rivet 2 is a position below the surface of the lower end flat part 13a and does not protrude from the surface of the lower end flat part 13a. Therefore, the plurality of switchboards 1 can be easily arranged in a row. Further, by using a high-strength round head rivet or the like as the rivet 2, the number of rivets can be reduced and the panel assembly time can be shortened.

  In addition, the inclined portion 30b of the outer embossed portion 30 and the inclined portion 31b of the inner embossed portion 31 have different inclinations so that a gap is formed between the inclined portions 30b and 31b. Specifically, the inclination of the inclined part 30b is made larger than the inclination of the inclined part 31b. By forming this gap, it is possible to disperse the force in the misalignment direction (D direction) between the lower end flat portion 13a of the front columnar thin plate panel 13 and the bent portion 11a of the bottom plate thin plate panel 11. Further, even when there is a variation in the processing accuracy of the inclined portions 30b and 31b of the outer embossed portion 30 and the inner embossed portion 31, the gap is absorbed by the gap, so that floating at the time of superposition can be suppressed. The flat surface on the rivet contact surface 32 side of the inner embossed portion 31 is also larger by a predetermined margin than the flat surface on the rivet contact surface 32 side of the outer embossed portion 30 in consideration of variations in processing accuracy. It is preferable to keep it.

  Moreover, since the outer embossing part 30 and the inner embossing part 31 which have the rivet contact surface 32 of the same shape are formed in the riveting position of the lower end flat part 13a and the bending part 11a, positioning of the riveting is performed. It can be done easily. As a result, panel assembly can be performed easily and the panel assembly time can be shortened.

  Further, the outer embossed portion 30 and the inner embossed portion 31 having the same rivet contact surface 32 are formed at the riveting positions of the lower end flat portion 13a and the bent portion 11a. It is possible to suppress the positional deviation (positional deviation in the D direction) between the flat surface portion 13a and the bent portion 11a, and to suppress rivet removal due to load and vibration after the panel assembly.

  As shown in FIG. 4, the outer surface of the bent portion 11a of the bottom plate thin plate panel 11 and the inner surface of the lower end flat portion 13a of the front column side plate thin plate panel 13 are in contact with each other and are rivet-coupled. The outer surface of the bent portion 12a of the panel 12 and the inner surface of the upper end flat portion 13b of the front columnar thin plate panel 13 are in contact with each other and rivet-bonded. Here, the lower end flat portion 13a and the upper end flat portion 13b of the front columnar thin plate panel 13 are not bent, and the bent portion 11a of the bottom plate thin plate panel 11 and the bent portion 12a of the ceiling plate thin plate panel are each one time. Only the L-shaped bending process is performed, and only two bending processes are performed in the width direction (X direction). The pair of middle column side thin plate panels 14 and the pair of rear column side thin plate panels 15 are similarly assembled and assembled.

  Therefore, as compared with the panel assembly structure having a large number of bending processes in the width direction shown in FIG. 8, the number of the bending processes is small in this embodiment, so that the accuracy of the outer width W of the switchboard 1 can be increased. The outer width W can be finished with the designed dimensional accuracy.

  FIG. 5 is a perspective view showing a configuration of the front pillar side thin plate panel 13. FIG. 6 is a perspective view showing a configuration of the middle column side thin plate panel 14. Further, FIG. 7 is a perspective view showing a configuration of the rear columnar thin plate panel 15.

  As shown in FIGS. 1 and 5, the front pillar side thin plate panel 13 includes a bent portion 40 formed by bending a front side (+ Y direction) side portion of the switchboard 1 toward the inside of the switchboard 1 in a U-shape. A bent portion 41 is formed by bending the rear side (−Y direction) side portion of the switchboard 1 toward the inside of the switchboard 1 in a Z-shape. The bent portion 40 is formed with a round hole 40a for attaching the front thin plate panel door with a hinge. In addition, the bending portion 41 includes a round hole for rivet caulking and a hexagon hole for screwing using a hexanut at regular intervals so as to allow attachment of a control device mounting member and a partition plate. Is formed. In addition, the opening part 42 for the crossover between boards is formed in the center part of the front pillar side thin plate panel 13. The opening 42 is a square hole. If the opening 42 is a round hole, a nipling process is required and takes time, but a square hole facilitates the process.

  As shown in FIG. 1 and FIG. 6, the central column side thin plate panel 14 is formed with a bus arrangement opening 50 in the center portion for passing the inter-board connection buses when lining up. The opening 50 is a square hole. The bus bar only passes through the opening 50 of one thin plate. Conventionally, the four sides of the bus bar penetrating portion are constituted by a plurality of members, and there is a risk of heat generation due to vibration displacement at the connecting portion of the bus bar penetrating portion and dimensional accuracy of the member. In the present embodiment, bending is not required just by forming a square hole, and there is no generation of vibration due to vibration deviation or dimensional error because there is no connection portion of the busbar. Furthermore, it is possible to secure a sufficient space distance in consideration of the case where the energization current of the busbar becomes large, and it is not necessary to use a non-magnetic material used when the space distance cannot be secured, thereby reducing costs. it can.

  Further, the middle column side thin plate panel 14 is formed with bent portions 51 and 52 which are bent in a U-shape with both side portions in the Y direction facing the inside of the switchboard 1. Like the bending portion 41, the bending portions 51 and 52 use round holes for rivet caulking and hexanuts at regular intervals so as to allow attachment of control device mounting members and partition plates. Hexagonal holes for screwing are formed.

  As shown in FIGS. 1 and 7, the rear column side thin plate panel 15 has a bent portion obtained by bending the rear side (−Y direction) side portion of the switchboard 1 toward the inner side of the switchboard 1 in a U-shape. 60 and a bent portion 61 formed by bending the front side (+ Y direction) side portion of the switchboard 1 toward the inside of the switchboard 1 in a Z shape. The bent portion 60 has a round hole for enabling the rear thin panel door to be attached by a hinge, and a hexagonal hole for screwing using a hexanut that enables the attachment of the thin panel as a rear cover. Is formed.

  A front thin plate panel door (not shown) is attached to the + Y direction end surface, and a rear thin plate panel or a rear thin plate panel door (not shown) is attached to the −Y direction end surface. In addition, between the front column side plate thin plate panel 13 and the middle column side plate thin plate panel 14, between the rear column side plate thin plate panel 15 and the middle column side plate thin plate panel 14, and between the middle column side plate thin plate panels 14, illustrated A pair of intermediate thin panels not to be assembled is assembled as necessary. An outer embossed portion 30 corresponding to each inner embossed portion 31 of the bottom plate thin plate panel 11 and the ceiling plate thin plate panel 12 is formed on the intermediate thin plate panel and is rivet-coupled, and the front column side plate thin plate panel 13 and the middle column side plate thin plate are formed. The same surface as each side surface of the panel 14 and the rear pillar side thin plate panel 15 is formed.

  In addition, a distribution board having various combinations of width and depth can be easily configured only by changing the shapes of the bottom plate thin plate panel 11 and the ceiling plate thin plate panel 12.

  In addition, each thin panel of the switchboard 1 (the bottom plate thin panel 11, the ceiling plate thin panel 12, and the side plate thin panel 16 are a thin steel plate and a stainless steel plate whose surfaces are plated. The thin panel does not require any painting treatment, only rivets are joined, and welding is not required, reducing man-hours, variation in quality, and dimensional accuracy even for general workers who do not have special skills. High panel assembly can be performed easily and in a short time.

  Moreover, you may make it the magnitude | size of a pair of inner side embossing part 31 and the outer side embossing part 30 combined differ by the position arrange | positioned. As a result, the positioning accuracy of the panel assembly can be further increased, and an assembly error can be prevented.

DESCRIPTION OF SYMBOLS 1 Switchboard 2 Rivet 11 Bottom plate thin plate panel 11a, 12a Bending part 12 Ceiling plate thin plate panel 13 Front pillar side thin plate panel 13a, 14a, 15a Lower end flat part 13b, 14b, 15b Upper end flat part 14 Middle pillar side thin plate panel 15 Rear pillar side board Thin plate panel 16 Side plate thin panel 21, 22 Side 30 Outer embossed portion 30a, 31a Through hole 30b, 31b Inclined portion 31 Inner embossed portion 32 Rivet contact surface 40, 41, 51, 52, 60, 61 Bent portion 40a Round Holes 42 and 50 Opening W External width

Claims (6)

A thin panel panel frame structure of a distribution board that assembles a bottom panel thin panel, a pair of side panel thin panels, and a ceiling panel thin panel to form the basic structure of the distribution panel,
The bottom plate thin plate panel is formed with a bent portion obtained by bending an L-shape with the side end portions on the side of the pair of side plate thin plate panels made of a thin steel plate and a stainless steel plate plated on the surface, and Forming a plurality of inner embossed portions extruded toward the inside of the switchboard at the bent portion;
The ceiling plate thin panel is formed with a bent portion formed by bending an L-shaped side end portion on the side of the pair of side plate thin plate panels downward, and extruded to the bent portion toward the inside of the switchboard Forming the inner embossed part of
The pair of side plate thin plate panels are arranged on the inner side of the switchboard on each of a lower end flat portion in contact with an outer surface of the bent portion of the bottom plate thin plate panel and an upper end flat portion in contact with an outer surface of the bent portion of the ceiling plate thin plate panel. A plurality of outer embossed portions having a rivet contact surface having the same shape as the inner embossed portion extruded toward the inner embossed portion are formed corresponding to the positions of the inner embossed portions,
The bottom flat plate portion and the upper flat plate portion of the pair of side plate thin plate panels are overlapped with the bent portions of the bottom plate thin plate panel and the ceiling plate thin plate panel using the inner embossed portions and the outer embossed portions as positioning portions. In addition, a thin panel frame structure of a switchboard, wherein each inner embossed portion and each outer embossed portion are riveted.   The pair of side plate thin plate panels includes a pair of front column side plate thin plate panels each including a pair of sides on the front side of the switchboard, a pair of rear column side plate thin plate panels respectively including a pair of sides on the rear side of the switchboard, 2. It is formed by three pairs of spaced apart panels of a pair of middle pillar side thin plate panels respectively disposed between the front pillar side thin plate panel and the pair of rear pillar side thin plate panels. Panel panel structure of power distribution board.   The pair of middle pillar side thin plate panels is formed with an opening for busbar arrangement in a central portion, and both sides are bent into a U-shape toward the inside of the switchboard. 2. A thin panel frame structure of the switchboard according to 2.   The pair of front column side thin plate panels are bent into a U shape with the front side of the switchboard facing the inside of the switchboard, and the rear side of the switchboard is directed to the inside of the switchboard. The thin panel panel frame structure of a switchboard according to claim 2 or 3, wherein the thin panel frame structure is bent into a shape.   The pair of rear column side thin plate panels are bent into a U-shape with the rear side of the switchboard facing the inside of the switchboard, and the Z-shape with the front side of the switchboard facing the inside of the switchboard The thin panel frame structure of a switchboard according to any one of claims 2 to 4, wherein the thin panel frame structure is bent into a shape.   The switchboard according to any one of claims 1 to 5, wherein a size of the pair of the inner embossed portion and the outer embossed portion to be combined includes different sizes at positions where they are arranged. Thin panel frame structure.

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