JP6816358B2

JP6816358B2 - Switchboard panel structure

Info

Publication number: JP6816358B2
Application number: JP2015240955A
Authority: JP
Inventors: 修平佐竹; 岳浅沼
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2021-01-20
Anticipated expiration: 2035-12-10
Also published as: JP2017108548A

Description

本発明は、配電盤の重量増加を抑え、かつ、高い密閉性を得ることができる配電盤のパネル構造に関する。 The present invention relates to a panel structure of a switchboard that can suppress an increase in the weight of the switchboard and can obtain a high degree of airtightness.

受変電設備等で用いられる配電盤は、盤の製作コスト低減や軽量化を目的として、薄板鋼板の辺部をＬ字型に折り曲げ加工を施した側板パネル、底板パネル、天井板パネルを組み合わせ、パネルの相互間をねじ締結、もしくはリベット止めによって組み立てるものがある。 The switchboard used in power receiving and transforming equipment is a panel that combines side plate panels, bottom plate panels, and ceiling plate panels with the sides of thin steel plates bent into an L shape for the purpose of reducing the manufacturing cost and weight of the panels. Some of them are assembled by screwing or riveting between them.

一方、特許文献１には、板状の扉本体と、板状の扉本体の周囲に取り付けた枠体とで構成される扉構造が記載され、枠体が、扉本体の周縁部の内面を抑える内側枠体と、扉本体の周縁部の外側面に当接して内側枠体との間で扉本体の周縁部を挟着する外側枠体とで構成されている。この扉構造は、内側枠体と外側枠体とで扉本体の周縁部を挟んで扉本体の周縁部を補強することができ、板状の扉本体自体が薄くて撓みやすいものであっても枠体で扉本体の撓み等を防止するようにしている。 On the other hand, Patent Document 1 describes a door structure composed of a plate-shaped door body and a frame body attached around the plate-shaped door body, and the frame body covers the inner surface of the peripheral edge of the door body. It is composed of an inner frame body that holds the door body and an outer frame body that abuts on the outer surface of the peripheral edge portion of the door body and sandwiches the peripheral edge portion of the door body between the inner frame body. In this door structure, the peripheral edge of the door body can be sandwiched between the inner frame and the outer frame to reinforce the peripheral edge of the door body, and even if the plate-shaped door body itself is thin and easily bent. The frame is designed to prevent the door body from bending.

特開２０１３−１０２６２０号公報Japanese Unexamined Patent Publication No. 2013-102620

ところで、配電盤内において短絡故障などが発生した場合、アークガスによって内部圧力が上昇する。このとき、平板パネルをリベットなどによって締結した組立方式の配電盤では、平板パネルの変形による荷重が、リベットやねじ等の締結部分に集中し、高温のアークガスの漏洩、もしくは配電盤の筐体の破損が発生する場合がある。配電盤の強度を高くするためには、平板パネルを厚くする方法が考えられるが、この方法では、配電盤の重量増加やコスト増加を招くことになる。 By the way, when a short circuit failure occurs in the switchboard, the internal pressure rises due to the arc gas. At this time, in the assembly type switchboard in which the flat plate panels are fastened with rivets or the like, the load due to the deformation of the flat plate panels is concentrated on the fastening parts such as rivets and screws, and high temperature arc gas leaks or the switchboard housing is damaged. It may occur. In order to increase the strength of the switchboard, a method of thickening the flat plate panel can be considered, but this method causes an increase in the weight and cost of the switchboard.

本発明は、上記に鑑みてなされたものであって、配電盤の重量増加を抑え、かつ、高い密閉性を得ることができる配電盤のパネル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, and an object of the present invention is to provide a panel structure of a switchboard capable of suppressing an increase in weight of the switchboard and obtaining a high degree of airtightness.

上述した課題を解決し、目的を達成するために、本発明にかかる配電盤のパネル構造は、少なくとも両側辺部の外縁部が内側に向けてＬ字状に折り曲げられた第１の折り曲げ部を有した矩形の外側フレームと、少なくとも両側辺部が内側に向けてＬ字状に折り曲げられた第２の折り曲げ部を有し、前記第２の折り曲げ部の表面が前記第１の折り曲げ部の裏面に密着する矩形の内側フレームと、前記外側フレームと前記内側フレームとで挟まれた領域に周縁部が差し込まれた平板と、前記外側フレームと前記平板との間を密閉する密閉部材と、を備えたことを特徴とする。 In order to solve the above-mentioned problems and achieve the object, the panel structure of the switchboard according to the present invention has a first bent portion in which at least the outer edges of both side portions are bent inward in an L shape. It has a rectangular outer frame and a second bent portion whose at least both side portions are bent inward in an L shape, and the surface of the second bent portion is on the back surface of the first bent portion. A rectangular inner frame that is in close contact with the outer frame, a flat plate having a peripheral edge inserted into a region sandwiched between the outer frame and the inner frame, and a sealing member that seals between the outer frame and the flat plate are provided. It is characterized by that.

また、本発明にかかる配電盤のパネル構造は、上記の発明において、前記密閉部材は、さらに前記内側フレームと前記平板との間に設けられることを特徴とする。 Further, the panel structure of the switchboard according to the present invention is characterized in that, in the above invention, the sealing member is further provided between the inner frame and the flat plate.

また、本発明にかかる配電盤のパネル構造は、上記の発明において、前記外側フレームの上辺部の外縁部および下辺部の外縁部が内側に向けてＬ字状に折り曲げられ、前記内側フレームの上辺部の外縁部および下辺部の外縁部が内側に向けてＬ字状に折り曲げられたことを特徴とする。 Further, in the panel structure of the switchboard according to the present invention, in the above invention, the outer edge portion of the upper side portion and the outer edge portion of the lower side portion of the outer frame portion are bent inward in an L shape, and the upper side portion of the inner frame portion. It is characterized in that the outer edge portion of the outer edge portion and the outer edge portion of the lower side portion are bent inward in an L shape.

また、本発明にかかる配電盤のパネル構造は、上記の発明において、前記外側フレームおよび前記内側フレームは、金属部材であることを特徴とする。 Further, the panel structure of the switchboard according to the present invention is characterized in that, in the above invention, the outer frame and the inner frame are metal members.

本発明によれば、平板が外側フレームと内側フレームとに挟まれた領域に周縁部が差し込まれているため、平板にかかる荷重は、前記外側フレームと前記内側フレームとの面に分散され、平板の厚みを増すことなく強度を増すことができる。また、前記外側フレームと前記平板との間に密閉部材を設けているので、高い密閉性を得ることができる。 According to the present invention, since the peripheral edge portion is inserted into the region where the flat plate is sandwiched between the outer frame and the inner frame, the load applied to the flat plate is distributed to the surfaces of the outer frame and the inner frame, and the flat plate is flat. The strength can be increased without increasing the thickness of the. Further, since the sealing member is provided between the outer frame and the flat plate, high sealing property can be obtained.

図１は、本発明の実施の形態であるパネルの外観を示す斜視図である。FIG. 1 is a perspective view showing the appearance of a panel according to an embodiment of the present invention. 図２は、図１に示したパネルの構成を示す断面図である。FIG. 2 is a cross-sectional view showing the configuration of the panel shown in FIG. 図３は、密閉部材を用いたシール構造を示す断面図である。FIG. 3 is a cross-sectional view showing a seal structure using a sealing member. 図４は、密閉部材の変形例を示す図である。FIG. 4 is a diagram showing a modified example of the sealing member.

以下、添付図面を参照してこの発明を実施するための形態について説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

図１は、本発明の実施の形態であるパネルの外観を示す斜視図である。また、図２は、図１に示したパネルの構成を示す断面図である。図１および図２に示すように、パネル１は、閉鎖配電盤などの配電盤の側板に用いられる。なお、パネル１は、側板以外に底板、天井板としても用いられ、これらをリベット止めや、ねじの締結によって閉鎖配電盤を組み立てる。 FIG. 1 is a perspective view showing the appearance of a panel according to an embodiment of the present invention. Further, FIG. 2 is a cross-sectional view showing the configuration of the panel shown in FIG. As shown in FIGS. 1 and 2, the panel 1 is used as a side plate of a switchboard such as a closed switchboard. The panel 1 is also used as a bottom plate and a ceiling plate in addition to the side plates, and these are riveted or screwed to assemble a closed switchboard.

パネル１は、外側フレーム２１および内側フレーム２２からなるフレーム２と、外側フレーム２１と内側フレーム２２とで挟まれた領域に、周縁部が差し込まれた平板３とを有する。外側フレーム２１は、矩形であり、両側辺部２ａ，２ｂの外縁部が内側方向Ａに向けてＬ字状に折り曲げられた第１の折り曲げ部２１ａを有する。また、内側フレーム２２は、矩形であり、両側辺部２ａ，２ｂが内側方向Ａに向けてＬ字状に折り曲げられた第２の折り曲げ部２２ａを有する。そして、第２の折り曲げ部２２ａの表面が第１の折り曲げ部２１ａの裏面に密着する構成としている。なお、外側フレーム２１および内側フレーム２２は、金属部材であることが好ましい。 The panel 1 has a frame 2 composed of an outer frame 21 and an inner frame 22, and a flat plate 3 having a peripheral edge inserted in a region sandwiched between the outer frame 21 and the inner frame 22. The outer frame 21 is rectangular and has a first bent portion 21a in which the outer edges of the side portions 2a and 2b are bent in an L shape toward the inward direction A. Further, the inner frame 22 is rectangular and has a second bent portion 22a in which both side portions 2a and 2b are bent in an L shape toward the inner direction A. The surface of the second bent portion 22a is in close contact with the back surface of the first bent portion 21a. The outer frame 21 and the inner frame 22 are preferably metal members.

すなわち、フレーム２は、外側フレーム２１と内側フレーム２２による２重構造となっている。平板３は、内部故障によって内側に圧力上昇が生じても、フレーム２の４辺の面によって平板３にかかる荷重を分散することができる。したがって、平板３の厚みを増すことなく、パネル強度を向上させることができる。換言すれば、本実施の形態のパネル１は、所望のパネル強度を得る場合、従来のパネルに比して薄くすることができ、パネルの薄型化および軽量化を図ることができる。 That is, the frame 2 has a double structure consisting of an outer frame 21 and an inner frame 22. The flat plate 3 can disperse the load applied to the flat plate 3 by the four side surfaces of the frame 2 even if the pressure rises inward due to an internal failure. Therefore, the panel strength can be improved without increasing the thickness of the flat plate 3. In other words, the panel 1 of the present embodiment can be made thinner than the conventional panel in order to obtain the desired panel strength, and the panel can be made thinner and lighter.

また、外側フレーム２１と平板３との間には枠状の密閉部材３１が配置される。また、内側フレーム２２と平板３との間には枠状の密閉部材３２が配置される。密閉部材３１，３２は、例えば、弾力性のあるゴムであることが好ましい。密閉部材３１は、外側フレーム２１と平板３との隙間を埋め、密閉部材３２は、内側フレーム２２と平板３との隙間を埋める。これにより、内部故障によって発生する高温のアークガスなどの漏れを防止して高い密閉性を得ることができる。 Further, a frame-shaped sealing member 31 is arranged between the outer frame 21 and the flat plate 3. Further, a frame-shaped sealing member 32 is arranged between the inner frame 22 and the flat plate 3. The sealing members 31 and 32 are preferably made of elastic rubber, for example. The sealing member 31 fills the gap between the outer frame 21 and the flat plate 3, and the sealing member 32 fills the gap between the inner frame 22 and the flat plate 3. This makes it possible to prevent leakage of high-temperature arc gas or the like generated by an internal failure and obtain high airtightness.

なお、内部故障による圧力上昇により、平板３は外側に向けて力を受けるため、内側の密閉部材３２を削除し、外側の密閉部材３１のみを配置するようにしてもよい。 Since the flat plate 3 receives a force toward the outside due to a pressure increase due to an internal failure, the inner sealing member 32 may be deleted and only the outer sealing member 31 may be arranged.

また、上述した実施の形態では、両側辺部２ａ，２ｂのみに第１の折り曲げ部２１ａおよび第２の折り曲げ部２２ａを形成していたが、フレーム２（外側フレーム２１および内側フレーム２２）の上辺部２ｃの外縁部および下辺部２ｄの外縁部を内側に向けてＬ字状に折り曲げた折り曲げ部を設けてもよい。また、フレーム２の４辺すべてに折り曲げ部を設けてもよい。 Further, in the above-described embodiment, the first bent portion 21a and the second bent portion 22a are formed only on the side portions 2a and 2b on both sides, but the upper side of the frame 2 (outer frame 21 and inner frame 22) is formed. A bent portion may be provided in which the outer edge portion of the portion 2c and the outer edge portion of the lower side portion 2d are bent inward in an L shape. Further, bent portions may be provided on all four sides of the frame 2.

さらに、密閉部材３１，３２は、平板３の周縁部で連結された１つの密閉部材としてもよい。 Further, the sealing members 31 and 32 may be one sealing member connected by the peripheral edge of the flat plate 3.

また、図３に示すように、密閉部材３１，３２の一部が挿入される凹部３１ａ，３２ａをそれぞれ外側フレーム２１の平板３側および内側フレーム２２の平板３側に設け、差圧によって密閉されるシール構造としてもよい。凹部３１ａ，３２ａは平板３側に設けてもよいし、それぞれ、外側フレーム２１および平板３の双方、および内側フレーム２２および平板３側の双方に設けてもよい。 Further, as shown in FIG. 3, recesses 31a and 32a into which a part of the sealing members 31 and 32 are inserted are provided on the flat plate 3 side of the outer frame 21 and the flat plate 3 side of the inner frame 22, respectively, and are sealed by the differential pressure. It may have a seal structure. The recesses 31a and 32a may be provided on the flat plate 3 side, or may be provided on both the outer frame 21 and the flat plate 3 and on both the inner frame 22 and the flat plate 3 side, respectively.

さらに、図４に示すように、密閉部材３１は、圧力付加方向に対して斜めに分断する分断部３１ｂを設けてもよい。密閉部材３２も同様に分断部３１ｂを設けてもよい。この場合、密閉部材３１，３２は、圧力付加方向に対して拡大／縮小する。 Further, as shown in FIG. 4, the sealing member 31 may be provided with a dividing portion 31b that divides the sealing member 31 diagonally with respect to the pressure applying direction. The sealing member 32 may also be provided with the dividing portion 31b in the same manner. In this case, the sealing members 31 and 32 expand / contract in the pressure applying direction.

１パネル
２フレーム
２ａ，２ｂ側辺部
２ｃ上辺部
２ｄ下辺部
３平板
２１外側フレーム
２１ａ第１の折り曲げ部
２２内側フレーム
２２ａ第２の折り曲げ部
３１，３２密閉部材
３１ａ，３２ａ凹部
３１ｂ分断部 1 Panel 2 Frame 2a, 2b Side side 2c Upper side 2d Lower side 3 Flat plate 21 Outer frame 21a First bent part 22 Inner frame 22a Second bent part 31, 32 Sealing member 31a, 32a Recessed part 31b Divided part

Claims

A rectangular outer frame having a first bend in which the outer edges of at least both sides are bent inward in an L shape.
With a rectangular inner frame in which at least both side portions have a second bent portion that is bent inward in an L shape, and the surface of the second bent portion is in close contact with the back surface of the first bent portion. ,
A flat plate having a peripheral edge inserted into a region sandwiched between the outer frame and the inner frame,
In the outer frame, a sealing member that seals between the outer frame and the flat plate only at a position inside the portion where the front surface of the second bent portion and the back surface of the first bent portion are in close contact with each other.
The panel structure of the switchboard is characterized by being equipped with.

The panel structure of a switchboard according to claim 1, wherein the sealing member is further provided between the inner frame and the flat plate.

The outer edge portion of the upper side portion and the outer edge portion of the lower side portion of the outer frame are bent inward in an L shape.
The panel structure of the switchboard according to claim 1 or 2, wherein the outer edge portion of the upper side portion and the outer edge portion of the lower side portion of the inner frame are bent inward in an L shape.

The panel structure of a switchboard according to any one of claims 1 to 3, wherein the outer frame and the inner frame are metal members.