JP2011061980A - Panel frame structure of closed distribution panel - Google Patents
Panel frame structure of closed distribution panel Download PDFInfo
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- JP2011061980A JP2011061980A JP2009209322A JP2009209322A JP2011061980A JP 2011061980 A JP2011061980 A JP 2011061980A JP 2009209322 A JP2009209322 A JP 2009209322A JP 2009209322 A JP2009209322 A JP 2009209322A JP 2011061980 A JP2011061980 A JP 2011061980A
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- 238000005452 bending Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
Description
この発明は、配電用の電気機器，半導体装置などを収納する閉鎖配電盤のパネルフレーム構造に関する。 The present invention relates to a panel frame structure of a closed switchboard that houses electrical equipment for distribution, semiconductor devices, and the like.
頭記の閉鎖配電盤について、旧来構造ではアングル鋼材の縦梁，横梁，奥行き方向の梁を組み合わせ、そのコーナー部を溶接結合するなどして構築した箱形枠組の周面に側板，底板，天井板，背面カバーを組み付けた構成が一般的であったが、昨今では盤の軽量化、溶接レス，塗装レス化を推進してコスト低減を図るために、薄板のメッキ鋼板に板金曲げ加工を施して作製した側板パネル，底板パネル，天井板パネルを組み合わせ、そのパネル相互間をネジ締結，あるいはリベット止めした組立方式の配電盤が多く製作される傾向にあり、その盤パネルフレームの組立構造について様々な提案がなされている（例えば、特許文献１参照）。 For the closed switchboards mentioned above, in the conventional structure, side plates, bottom plates, and ceiling plates are attached to the peripheral surface of a box-type frame constructed by combining vertical steel beams, horizontal beams, and beams in the depth direction and welding the corners thereof. However, in recent years, sheet metal bending has been applied to thin plated steel sheets in order to reduce the cost by reducing the weight of the panel, eliminating welding and painting. There is a tendency to produce a lot of switchboards with assembly methods in which the manufactured side panel panels, bottom panel panels, and ceiling panel panels are combined, and the panels are screwed together or riveted, and various proposals are made for the panel panel frame assembly structure. (For example, refer to Patent Document 1).
次に、薄板鋼板のネジ締結組立方式による閉鎖配電盤のパネルフレームについて、その従来例の組立構造を図４（ａ）〜（ｃ）に示す。図において、１は左右に対峙する一対の側板パネル、２は底板パネル、３は固定ボルト、３ａはナットであり、底板パネル２および天井板パネル（不図示）はその左右側辺部を側板１の上下辺端部にネジ締結して箱形のパネルフレームを構築している。なお、このパネルフレーム構造に正面扉，背面カバーを付設して配電盤のキャビネットを構成している。 Next, the assembly structure of the conventional example is shown in FIG. 4 (a)-(c) about the panel frame of the closed switchboard by the screw fastening assembly system of a thin steel plate. In the figure, 1 is a pair of side plate panels facing left and right, 2 is a bottom plate panel, 3 is a fixing bolt, 3a is a nut, and the bottom plate panel 2 and a ceiling plate panel (not shown) have their left and right side portions as side plates 1. A box-shaped panel frame is constructed by fastening the screws to the upper and lower side edges. In addition, a front door and a rear cover are attached to the panel frame structure to constitute a cabinet of the switchboard.
ここで、前記の側板パネル１，底板パネル２，および天井板パネル（不図示）は、いずれも板厚が１．６mm程度の薄板メッキ鋼板に板金曲げ加工を施して作製されたものであり、図示構造では側板パネル１の前後辺を内側にＬ曲げ加工し、底辺には “コ字形”曲げ加工を施した上で、底辺折り曲げ部の端面には奥行き方向に分散してボルト通し穴を穿孔している。一方、底板パネル２は、その周囲四辺を上向きにＬ曲げ加工した上で、その左右側辺の折り曲げ部端面には奥行き方向に沿ってボルト通し穴を穿孔しておく。 Here, the side plate panel 1, the bottom plate panel 2, and the ceiling plate panel (not shown) are all produced by subjecting a thin plate-plated steel sheet having a thickness of about 1.6 mm to sheet metal bending. In the structure shown in the figure, the front and rear sides of the side panel panel 1 are bent inward, the bottom is bent in a “U” shape, and the end face of the bent bottom part is dispersed in the depth direction to drill through holes. is doing. On the other hand, the bottom plate panel 2 is L-bent on the four sides around it, and a bolt through hole is drilled along the depth direction on the end faces of the bent portions on the left and right sides.
そして、配電盤の組立時には図４（ｂ）の分解状態から底板パネル２の側辺折り曲げ部（Ｌ曲げ加工）を側板パネル１の底辺折り曲げ部（“コ字形”曲げ加工）の板面に重ね合わせ、この状態で前記ボルト通し穴に通した固定ボルト３にナット３ａを螺合してパネル相互間をねじ締結して結合するようにしている。なお、固定ボルト３を用いる代わりにリベットをカシメ止めしてパネル相互間を結合する組立方式も知られている。 When assembling the switchboard, the side bent portion (L-bending) of the bottom plate panel 2 is superimposed on the plate surface of the bottom bent portion (“U-shaped” bending) of the side plate panel 1 from the exploded state of FIG. In this state, the nut 3a is screwed into the fixing bolt 3 passed through the bolt through hole, and the panels are screwed together to be coupled. An assembly method is also known in which the rivets are caulked instead of using the fixing bolts 3 and the panels are coupled to each other.
また、図中に表した符号４の部品は底板パネル２の上に載せた電力ケーブルなどの機材を固定するための取付金具であり、該取付金具４は底板パネル２の主板面に螺設した取付ネジ５で締結するようにしている。 The reference numeral 4 shown in the drawing is a mounting bracket for fixing equipment such as a power cable mounted on the bottom plate panel 2, and the mounting bracket 4 is screwed to the main plate surface of the bottom plate panel 2. The mounting screws 5 are used for fastening.
なお、上記の配電盤は工場内で組み立てた後、盤内に収容する電気機器を実装した上で、個々に盤を据付け先の現地に輸送し、現地では複数台の配電盤で構成する列盤に合わせて据付け床面にあらかじめ敷設した共通ベース枠（基台）の上に各盤を左右に並置搭載して列盤を構成するようにしている。 The above switchboards are assembled in the factory, and after mounting the electrical equipment to be housed in the panel, the panels are individually transported to the installation site, and on the site, they are made up of multiple switchboards. In addition, each panel is mounted side by side on a common base frame (base) preliminarily laid on the installation floor surface to constitute a row board.
前記した構成になる配電盤のキャビネットについては、高い組立強度の確保とともに、仕上がり外形寸法の精度が重要視される。すなわち、複数の盤を左右に並べて配電設備の列盤を構成する場合に、個々の盤についてその外形横幅寸法に誤差，バラツキがあると、据付け床面に敷設した共通ベース枠の上に並置搭載する各配電盤が正しく収まらず、左右に並ぶ盤の相互間に不要な隙間が生じたり、逆にベース枠からはみ出すといった不具合が生じたりすることから、盤の横幅寸法には取りわけ高い仕上がり寸法精度が要求される。 With regard to the cabinet of the switchboard having the above-described configuration, high accuracy of the finished outer dimensions is regarded as important as well as ensuring high assembly strength. In other words, when a plurality of panels are arranged side by side to form a distribution board, if there is an error or variation in the external width of each panel, it is mounted side by side on a common base frame laid on the installation floor. The switchboards do not fit properly, causing unnecessary gaps between the panels on the left and right sides, and conversely causing problems such as protruding from the base frame. Is required.
かかる観点から図４に示した従来のパネルフレーム構造を検討すると、側板パネル１と底板パネル２との間の結合部では、側板パネル１の底辺を“コ字形”曲げ加工し、底板パネル２の左右側辺をＬ曲げ加工した上で、その折り曲げ部の板面同士を重ね合わせてネジ締結するようにしている。 Considering the conventional panel frame structure shown in FIG. 4 from this point of view, at the joint between the side plate panel 1 and the bottom plate panel 2, the bottom side of the side plate panel 1 is bent in a “U” shape. The left right side is subjected to L-bending processing, and the plate surfaces of the bent portions are overlapped to be screwed together.
ところで、前記の折り曲げ部は板金曲げ加工の専用プレス機（プレスブレーキ）を使用し、このプレス機に作業員がワークを位置決めセットして曲げ加工の作業を行っており、Ｌ曲げは１回の曲げ加工工程で、“コ字形”曲げは２回の曲げ加工工程で形成するようにしている。しかしながら、この板金曲げ加工には少なからず寸法，直角度に誤差を伴うことから、図４の組立構造のように側板パネル１の“コ字形”曲げ部と底板パネル２のＬ曲げ部を重ね合わせてネジ締結した図４（ｃ）の組立状態では、前記の板金曲げ加工に伴う寸法，直角度の誤差分が横幅方向に累積されて、盤の横幅寸法Ｗを設計通りの寸法精度で仕上げることが実際には中々難しい。 By the way, the bending portion uses a dedicated press machine (press brake) for bending a sheet metal, and an operator positions and sets a work on the press machine to perform bending work. In the bending process, the “U-shaped” bend is formed by two bending processes. However, since this sheet metal bending process involves errors in dimensions and squareness, the “U-shaped” bent portion of the side plate panel 1 and the L bent portion of the bottom plate panel 2 are overlapped as in the assembly structure of FIG. In the assembled state shown in FIG. 4 (c), the dimension and perpendicularity errors associated with the sheet metal bending process are accumulated in the lateral width direction, and the lateral width W of the panel is finished with the designed dimensional accuracy. Is actually difficult.
また、図４の組立構造では、側板パネル１と底板パネル２の折り曲げ部を結合する固定ボルト３を全て左右の横幅方向からのみ締結しているために、強度面でパネル相互間にズレが生じたり、パネル折り曲げ部が撓み変形して配電盤が傾き易くなるといった問題もある。 Further, in the assembly structure of FIG. 4, since all the fixing bolts 3 that join the bent portions of the side plate panel 1 and the bottom plate panel 2 are fastened only from the left and right lateral width directions, there is a deviation between the panels in terms of strength. There is also a problem that the panel bending portion is bent and deformed, and the switchboard is easily tilted.
そのほか、図４（ｃ）のように底板パネル２のフラットな主板面に取付ネジ５を螺設して取付金具４を締結すると、取付ネジ５の先端が底板パネル２の板面を貫通してその裏面側に突き出すようになる。このために、工場内で行う組立作業では盤の底板パネル２と床面との間にスペーサなど介装して取付ネジ５の締結作業を行うようにしているが、このままでは配電盤を車両などに載せて工場から現地に輸送する場合に底板パネル２の裏面側に突き出した取付ネジ５が障害物となる。そこで、従来では工場での組立後に取付ネジ５を一旦外した状態で盤を据付け現場に輸送し、現場に敷設したベース枠の上に盤を載せた状態で、改めて取付ネジ５を螺設して取付金具４を締結する手間の掛かる作業を行っているのが現状である。 In addition, when the mounting screw 5 is screwed on the flat main plate surface of the bottom panel 2 and the mounting bracket 4 is fastened as shown in FIG. 4C, the tip of the mounting screw 5 penetrates the plate surface of the bottom panel 2. It protrudes to the back side. For this reason, in assembly work performed in the factory, a spacer or the like is interposed between the bottom plate panel 2 and the floor surface of the panel, and the mounting screws 5 are fastened. When mounting and transporting from the factory to the site, the mounting screw 5 protruding to the back side of the bottom panel 2 becomes an obstacle. Therefore, in the past, after assembling at the factory, the mounting screws 5 were once removed and the panel was transported to the installation site, and the mounting screws 5 were screwed again with the panel placed on the base frame laid on the site. At present, the laborious work of fastening the mounting bracket 4 is performed.
この発明は上記の点に鑑みなされたものであり、薄板鋼板を採用したリベット組立方式になる配電盤について、高い組立強度の確保と併せて、盤の外形横幅寸法を高い仕上がり精度に確保できるようパネル相互間の組立構造を改良し、さらに底板パネルの板面上に取付ネジを螺設して盤内に収容する機材の取付金具をネジ締結する場合に、底板パネルの板面を貫通してその裏面側に取付ネジの先端が突き出しても盤の床面側に影響を及ぼさないように工夫した閉鎖配電盤のパネルフレーム構造を提供することを目的とする。 The present invention has been made in view of the above points, and for a switchboard that adopts a rivet assembly system employing thin steel plates, in addition to ensuring high assembly strength, the panel can ensure the outer width of the panel with high finishing accuracy. When the assembly structure between them is improved and the mounting screws are screwed on the plate surface of the bottom plate panel and the mounting bracket of the equipment accommodated in the panel is screwed, the plate surface of the bottom plate panel is penetrated. An object of the present invention is to provide a panel frame structure of a closed switchboard that is devised so as not to affect the floor side of the panel even if the tip of the mounting screw protrudes on the back side.
上記目的を達成するために、この発明によれば、薄板鋼板に板金加工を施して作製した左右一対の側板パネルに底板パネルおよび天井板パネルを組み合わせ、そのパネル相互間をリベット止め，もしくネジ締結した組立構造になる閉鎖配電盤のパネルフレームにおいて、
前記側板パネルはその周囲四辺を内側にＬ曲げ加工し、底板パネルはその前後辺を上向きにＬ曲げ加工した上で、側板パネルの底辺，および前後辺のＬ曲げ部にそれぞれ底板パネルのフラットな左右側辺，および前後辺のＬ曲げ部の板面を重ね合わせ、この状態で前記重ね合わせ板面の間をリベット止め，もしくはネジ締結するものとする（請求項１）。
In order to achieve the above object, according to the present invention, a pair of left and right side plate panels produced by subjecting a thin steel plate to sheet metal processing is combined with a bottom plate panel and a ceiling plate panel, and the panels are riveted to each other or screwed. In the panel frame of a closed switchboard that becomes a fastened assembly structure,
The side plate panel is L-bent on the four sides around the inside, and the bottom plate panel is L-bent with the front and rear sides upward, and the bottom plate panel is flat on the bottom side of the side plate panel and the L-bend portion on the front and rear sides. It is assumed that the left right side and the plate surfaces of the L bent portions on the front and rear sides are overlapped, and in this state, the overlapped plate surfaces are riveted or fastened with screws (Claim 1).
また、前記のパネルフレーム構造においては、底板パネルの主板面に対し、その奥行き方向にハット曲げ加工を施して凸状段付き部を形成するともに、この凸状段付き部に対応して側板パネルの底辺Ｌ曲げ部にはその側縁を上向きにＺ曲げ加工し、この状態で底板パネルに形成した前記凸状段差部のフラットな左右側辺を側板パネルの前記Ｚ曲げ部に重ね合わせリベット止め，もしくはネジ締結する（請求項２）。 In the panel frame structure, the main plate surface of the bottom plate panel is subjected to hat bending in the depth direction to form a convex stepped portion, and the side plate panel corresponding to the convex stepped portion. The bottom edge L bend of the base plate is Z-bent with its side edges upward, and the flat left and right sides of the convex step formed on the bottom plate panel in this state are overlapped with the Z bend portion of the side plate panel and riveted. Or screw fastening (claim 2).
上記構成により、次記の効果を奏することができる。
（１）請求項１の構成によれば、底板パネルにはその横幅方向に側辺端部には曲げ加工を施さず、盤の外形仕様寸法に合わせて指定の横幅寸法に裁断した鋼板のフラットな主板面の側縁，および前後辺の折り曲げ部の側縁をそのまま側板パネルの底辺および前後辺の折り曲げ部（Ｌ字曲げ加工）に重ね合わせた上で、異なる方向からリベット止め，もしくはネジ締結している。これにより、従来構造（図４参照）のように“コ字形”曲げ加工した側板パネルの底辺折り曲げ部に底板パネルの側辺Ｌ曲げ部を重ね合わせて結合した構造と比べて、板金曲げ加工に伴う寸法，直角度の誤差，バラツキ分が横幅方向に累積することがなくて高い仕上がり寸法の精度を確保できる。
（２）また、側板パネルと底板パネルとの間の結合部においては、その底辺部と前後辺部とでは異なる方向からリベット止め，ネジ締結したことにより、パネル相互間の不要なズレの発生がなく、またパネルフレームのコーナー部の結合強度も増して盤組立体の傾きも防止できる。
（３）さらに、請求項２の構成によれば、底板パネルの主板面に対して、その奥行き方向に段付き形状のハット曲げ加工を施してその凸状段付き面と盤の据付け面との間に段差を形成したことにより、底面パネル上に螺設して機材の取付金具をネジ締結した際に、その取付ネジの先端が底板パネルを貫通して裏面側に突き出しても、この取付ネジの突き出し部が工場内で行う盤の組立，搬送，現地据付けの際に支障をきたすおそれがなくてその取扱い性を改善できる。
With the above configuration, the following effects can be obtained.
(1) According to the configuration of claim 1, the bottom plate panel is not flattened in the lateral width direction in the lateral width direction, and the flat plate of the steel plate cut to the specified lateral width dimension according to the external dimensions of the panel The side edges of the main plate surface and the side edges of the front and rear side bent parts are directly superimposed on the bottom side and front and rear side bent parts (L-shaped bending) of the side panel panel, and then riveted or screwed from different directions. is doing. As a result, compared to the conventional structure (see FIG. 4), the sheet metal bending process is performed in comparison with the structure in which the side L bent part of the bottom plate panel is overlapped with and joined to the bottom bent part of the side plate panel that has been bent. Accompanied dimensions, squareness errors, and variations do not accumulate in the width direction, ensuring high finished dimension accuracy.
(2) Further, in the joint portion between the side plate panel and the bottom plate panel, the bottom side portion and the front and rear side portions are riveted and screwed from different directions, thereby causing unnecessary displacement between the panels. In addition, the bonding strength of the corners of the panel frame can be increased to prevent the board assembly from tilting.
(3) Further, according to the configuration of claim 2, a step-shaped hat bending process is performed in the depth direction on the main plate surface of the bottom plate panel, and the convex stepped surface and the installation surface of the panel are By forming a step between them, even if the mounting bracket of the equipment is screwed on the bottom panel and the mounting bracket of the equipment is screwed, even if the tip of the mounting screw penetrates the bottom plate panel and protrudes to the back side, this mounting screw The projecting part of the panel can improve the handleability without causing any trouble during the assembly, transportation and on-site installation of the panel in the factory.
以下、この発明の実施の形態を図１〜図３に示す実施例に基づいて説明する。なお、実施例の図中で図４に対応する部材には同じ符号を付してその説明は省略する。
図示実施例のパネルフレーム構造は基本的に図４に示した従来構造と同様であるが、側板パネル１，底板パネル２については次記のように板金曲げ加工を施した上で、パネル相互間をリベット止めして閉鎖配電盤を組立てるようにしている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In addition, in the figure of an Example, the same code | symbol is attached | subjected to the member corresponding to FIG. 4, and the description is abbreviate | omitted.
The panel frame structure of the illustrated embodiment is basically the same as the conventional structure shown in FIG. 4, except that the side plate panel 1 and the bottom plate panel 2 are subjected to sheet metal bending as described below, Is assembled with a closed switchboard.
すなわち、側板パネル１については、先ずその周囲四辺を内側にＬ曲げ加工してＬ曲げ部１ａを形成する。一方、底板パネル２はその前後辺を上向きにＬ曲げ加工してＬ曲げ部２ａを形成する。なお、底板パネル２の前後辺の横幅寸法は、側板パネル１の前後辺との重ね合わせ代を含めて設計で指定した盤の外形横幅寸法に合わせて鋼板を裁断しておく。 That is, for the side panel 1, first, the four sides are L-bent inward to form an L-bending portion 1 a. On the other hand, the bottom plate panel 2 is L bent at the front and rear sides thereof to form the L bent portion 2a. The width dimension of the front and rear sides of the bottom panel 2 is cut in accordance with the outer width dimension of the board specified in the design including the overlap margin with the front and rear sides of the side panel 1.
また、図４で述べた取付金具４を底板パネル２の板面上に螺設した取付ネジ５で締結することを想定して底板パネル２の主板面には、あらかじめ図１（ｃ）で示すように盤の奥行き方向にハット曲げ加工を施して凸状段付き部２ｂを形成するとともに、このハット曲げ加工に対応して側板パネル１の底辺の折り曲げ部（Ｌ曲げ）には、奥行き方向に沿ってその端縁に上向きに立ち上がるようにＺ曲げ加工を施しておく（図２（ａ）参照）。 Further, the main plate surface of the bottom plate panel 2 is previously shown in FIG. 1C, assuming that the mounting bracket 4 described in FIG. In this way, a hat-bending process is performed in the depth direction of the board to form the convex stepped portion 2b, and the bent part (L-bending) of the bottom side of the side panel 1 in the depth direction corresponding to the hat-bending process. A Z-bending process is performed so that the edge rises upward along the edge (see FIG. 2A).
そして、盤の組立時には側板パネル１の底辺に形成した前記のＺ曲げ部１ｂ、および前後辺のＬ曲げ部１ａに、それぞれ底板パネル２の主板面にハット曲げ加工して形成した前記凸状段付き部２ｂのフラットな左右側辺、および前後辺のＬ曲げ部２ａの左右両端を重ね合わせ、この状態で側板パネル１のおよび底板パネル２のリベット止め箇所にあらかじめ穿孔したリベット通し穴１ｃ，２ｃにリベット６を通し、エアハンマーなど工具を使ってリベット６をカシメ止めする（図２（ａ），（ｂ）参照）。なお、このリベット止め工程では、側板パネル１の前後辺に対してリベット６を前後方向から、また底辺に対しては上方からカシメ止めする。 The convex step formed by hat-bending the main plate surface of the bottom plate panel 2 on the Z-bend portion 1b formed on the bottom side of the side plate panel 1 and the L-bend portion 1a on the front and rear sides when the board is assembled. Riveted through-holes 1c, 2c that are pre-drilled at the rivet fastening points of the side plate panel 1 and the bottom plate panel 2 in this state, with the flat left and right sides of the attached portion 2b and the left and right ends of the L bent portion 2a on the front and rear sides overlap The rivet 6 is passed through, and the rivet 6 is crimped by using a tool such as an air hammer (see FIGS. 2A and 2B). In this riveting process, the rivet 6 is caulked from the front and rear sides of the side plate panel 1 and from the upper side to the bottom side.
なお、図３は上記の組立方式により構成した配電盤のパネルフレーム全体の外観図であり、図中の符号７は左右の側板パネル２の間に跨がってその頂部にリベット止めした天井板パネル、８は盤内に棚板などを設置するために側板パネル１の内面に敷設した棚支柱である。 FIG. 3 is an external view of the entire panel frame of the switchboard constructed by the above assembly method. Reference numeral 7 in the figure is a ceiling panel panel straddling between the left and right side panel panels 2 and riveted to the top thereof. , 8 are shelf posts laid on the inner surface of the side panel 1 in order to install shelves in the panel.
上記のように板金曲げ加工を施して側板パネル１，底板パネル２のパネル相互間をリベット止めした実施例の配電盤パネルフレーム構造では、底板パネル２の左右側辺部には従来構造（図４参照）のようにＬ曲げ，あるいは“コ字形”曲げ加工を施してなく、フラットな板面の状態でその横幅寸法を配電盤の仕様に対応する外形横幅寸法に合わせて鋼板を裁断している。したがって盤の組立状態では、板金曲げ加工に伴う寸法誤差，バラツキ分が底板パネル２の横幅寸法に影響することがなく、これにより盤の仕上がり横幅寸法を高い精度に確保できる。しかも、前記のように側板パネル１と底板パネル２との間の結合部では、その底辺部と前後辺部とで互いに異なる方向からリベット止めしていることから、従来構造のようにパネル相互間にズレが生じるおそれはなく、また組立体のコーナー結合強度も強化できる。 In the switchboard panel frame structure of the embodiment in which the sheet metal bending process is applied to rivet between the side plate panel 1 and the bottom plate panel 2 as described above, a conventional structure is provided on the left and right side portions of the bottom plate panel 2 (see FIG. 4). The steel sheet is cut in accordance with the outer width corresponding to the specifications of the switchboard in a flat plate surface state without being subjected to L-bending or “U-shaped” bending as in FIG. Accordingly, in the assembled state of the board, the dimensional error and the variation due to the sheet metal bending process do not affect the width dimension of the bottom plate panel 2, and thus the finished width dimension of the board can be ensured with high accuracy. In addition, as described above, the connecting portion between the side plate panel 1 and the bottom plate panel 2 is riveted from different directions at the bottom side and the front and back sides, so that the panels can be connected to each other as in the conventional structure. There is no risk of misalignment, and the corner joint strength of the assembly can be enhanced.
さらに、底板パネル２の主板面に対して、その奥行き方向に段付き形状のハット曲げ加工を施してその凸状段付き部２ｂの板面と床面との間に段差を形成したことにより、底面パネル２に螺設して機材の取付金具４を取付ネジ５でネジ締結した際に、その取付ネジ５の先端が底板パネル２を貫通して裏面側に突き出しても、この取付ネジ５の突き出し部が工場内で行う盤の組立，搬送，現地据付けの際に支障をきたすおそれがなくてその取扱い性を改善できる。 Furthermore, by applying a step-shaped hat bending process in the depth direction to the main plate surface of the bottom panel 2 to form a step between the plate surface of the convex stepped portion 2b and the floor surface, Even when the mounting bracket 4 of the equipment is screwed to the bottom panel 2 and fastened with the mounting screw 5, even if the tip of the mounting screw 5 penetrates the bottom panel 2 and protrudes to the back side, the mounting screw 5 The projecting part can improve the handleability without causing any trouble during the assembly, transportation and on-site installation of the panel in the factory.
なお、図示実施例ではパネル相互間をリベット止めしているが、リベット６の代わりに図４と同様に固定ボルト３を採用してネジ締結することもできる。 In the illustrated embodiment, the panels are riveted. However, instead of the rivets 6, the fixing bolts 3 can be used to fasten the screws as in FIG.
１：側板パネル
１ａ：Ｌ曲げ部
１ｂ：Ｚ曲げ部
１ｃ：リベット通し穴
２：底板パネル
２ａ：前後辺のＬ曲げ部
２ｂ：凸状段付き部（ハット曲げ加工）
２ｃ：リベット通し穴
３：固定ボルト
４：取付金具
５：取付ネジ
６：リベット
７：天井板パネル
1: side plate panel 1a: L bent portion 1b: Z bent portion 1c: rivet through hole 2: bottom plate panel 2a: L bent portion at front and rear sides 2b: convex stepped portion (hat bending process)
2c: Rivet through hole 3: Fixing bolt 4: Mounting bracket 5: Mounting screw 6: Rivet 7: Ceiling panel
Claims (2)
前記側板パネルはその周囲四辺を内側にＬ曲げ加工し、底板パネルはその前後辺を上向きにＬ曲げ加工を施した上で、側板パネルの底辺，および前後辺のＬ曲げ部にそれぞれ底板パネルのフラットな左右側辺，および前後辺のＬ曲げ部の板面を重ね合わせ、この状態で前記重ね合わせ板面の間をリベット止め，もしくはネジ締結して構成したことを特徴とする閉鎖配電盤のパネルフレーム構造。 In the panel frame of a closed switchboard that has an assembled structure in which the left and right side panel panels, bottom panel panels, and ceiling panel panels, which are manufactured by sheet metal processing on thin steel sheets, are combined, and the panels are riveted or screwed together.
The side plate panel is subjected to L-bending on the four sides around the inside, and the bottom plate panel is subjected to L-bending with the front and rear sides upward, and the bottom plate panel is provided at the bottom side of the side plate panel and the L-bend portion of the front and rear sides. A panel of a closed switchboard characterized in that flat left and right sides and front and back side L-bending plate surfaces are overlapped and riveted or screwed between the overlapping plate surfaces in this state. Frame structure.
The panel frame structure according to claim 1, wherein a main plate surface of the bottom plate panel is subjected to hat bending in the depth direction to form a convex stepped portion, and a side panel corresponding to the convex stepped portion. The bottom edge L bent portion of the base plate is Z-bent with its side edge upward, and the flat left and right sides of the convex stepped portion formed on the bottom plate panel in this state are overlapped with the Z bent portion of the side plate panel. Closed switchboard panel frame structure characterized by being fastened or screwed.
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| JP2009209322A JP5428678B2 (en) | 2009-09-10 | 2009-09-10 | Panel frame structure of closed switchboard |
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| JP2009209322A JP5428678B2 (en) | 2009-09-10 | 2009-09-10 | Panel frame structure of closed switchboard |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811269A (en) * | 2016-06-07 | 2016-07-27 | 徐洪军 | Anti-flooding power distribution cabinet |
| CN109149404A (en) * | 2018-09-18 | 2019-01-04 | 张家港市宏冠金属制品厂 | A kind of fast disassembly type power distribution cabinet |
| JP2019041462A (en) * | 2017-08-23 | 2019-03-14 | 株式会社東芝 | Switch gear |
| CN116014586A (en) * | 2023-02-07 | 2023-04-25 | 浩群（天津）工程科技发展有限公司 | Power distribution cabinet with replaceable units |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841005U (en) * | 1981-09-09 | 1983-03-18 | 富士電機株式会社 | Switchboard box |
-
2009
- 2009-09-10 JP JP2009209322A patent/JP5428678B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841005U (en) * | 1981-09-09 | 1983-03-18 | 富士電機株式会社 | Switchboard box |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811269A (en) * | 2016-06-07 | 2016-07-27 | 徐洪军 | Anti-flooding power distribution cabinet |
| JP2019041462A (en) * | 2017-08-23 | 2019-03-14 | 株式会社東芝 | Switch gear |
| JP7005226B2 (en) | 2017-08-23 | 2022-01-21 | 株式会社東芝 | Switchgear |
| CN109149404A (en) * | 2018-09-18 | 2019-01-04 | 张家港市宏冠金属制品厂 | A kind of fast disassembly type power distribution cabinet |
| CN116014586A (en) * | 2023-02-07 | 2023-04-25 | 浩群（天津）工程科技发展有限公司 | Power distribution cabinet with replaceable units |
| CN116014586B (en) * | 2023-02-07 | 2023-08-08 | 浩群（天津）工程科技发展有限公司 | Power distribution cabinet with replaceable units |
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| JP5428678B2 (en) | 2014-02-26 |
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