JPH11241707A - Earth-conductive structure - Google Patents
Earth-conductive structureInfo
- Publication number
- JPH11241707A JPH11241707A JP4531398A JP4531398A JPH11241707A JP H11241707 A JPH11241707 A JP H11241707A JP 4531398 A JP4531398 A JP 4531398A JP 4531398 A JP4531398 A JP 4531398A JP H11241707 A JPH11241707 A JP H11241707A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- tapping screw
- members
- ground conduction
- conduction structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は接地導通構造、特
に受・配電盤や制御盤の筐体組立に用いるのに適した接
地導通構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground conduction structure, and more particularly to a ground conduction structure suitable for use in assembling a housing of a receiving / distribution panel or a control panel.
【０００２】[0002]
【従来の技術】図８は従来の受・配電盤及び制御盤筐体
の構造例を示す立体組立図である。受・配電盤や制御盤
の筐体は、一般に、側面枠５６、前面扉５７、背面扉５
８、天井パネル５９、床パネル６０等からなる外骨格
と、内部に受・配電盤や制御装置、器具を設置するため
の図示しない棚板、仕切り板等とから構成される。2. Description of the Related Art FIG. 8 is a three-dimensional assembly diagram showing an example of the structure of a conventional power receiving / distributing panel and control panel casing. In general, the housings of the receiving / distributing panel and the control panel include side frames 56, front doors 57, and rear doors 5.
8, an exoskeleton composed of a ceiling panel 59, a floor panel 60, etc., and a shelf board, a partition board, and the like (not shown) for installing a receiving / distributing panel, a control device, and instruments therein.
【０００３】次に、この筐体の製造方法について説明す
る。筐体を構成する各部材は、鋼板に打ち抜き、曲げ、
溶接等の成形加工が行われ、さらに防錆、美観を目的と
した塗装処理を施すことによって製造される。筐体は、
これら各部材を締結によって組み立て、完成する。締結
方法として、荷重負担の大きい箇所にはボルト、ナット
を使用し、荷重負担がそれほどかからない箇所には、組
立の簡便性を考慮して、モノボルトを使用する。[0003] Next, a method of manufacturing the housing will be described. Each member constituting the housing is stamped, bent,
It is manufactured by performing a forming process such as welding and applying a coating process for the purpose of preventing rust and aesthetic appearance. The housing is
These members are assembled by fastening and completed. As a fastening method, bolts and nuts are used in places where the load is large, and monobolts are used in places where the load is not so great in consideration of simplicity of assembly.
【０００４】この筐体が有すべき機能としては、強度、
耐久性等の他、安全対策として、筐体の全構成部材が接
地されていること、すなわち導通が求められる。各部材
の塗装皮膜は不導体であるため、単に締結によって組み
立てるだけでは上記導通機能を満足することはできな
い。そのため、塗装皮膜を部分的にわざわざ傷つけるこ
とによって塗装を剥離し、導通させる。その方法として
は、やすり等の手作業や、図９に示すように歯付き座金
を用いてはがしたりしている。The functions that this housing should have are strength,
In addition to durability and the like, as a safety measure, it is required that all components of the housing are grounded, that is, conduction. Since the coating film of each member is a non-conductor, the above-described conduction function cannot be satisfied only by assembling by fastening. Therefore, the paint film is peeled off by partially damaging the paint film to make it conductive. As the method, a manual operation such as a file is used, and as shown in FIG.
【０００５】図９は従来の受・配電盤及び制御盤筐体の
接地導通構造の一例を示す部分拡大断面図である。同図
において、骨格側の部材６２ｃへナットの抵抗溶接，い
わゆるナットウエルド６３を塗装前に施す。一方、内側
の部材６２ｄには、スプリングワッシャー６１ａ及びワ
ッシャー６１ｂの下，つまり部材６２ｄ側に、座金に鋭
い凹凸のついた歯付座金６２を挟み、この状態でボルト
６１の締め付け力によって両部材を締結する。この締結
の結果、歯付座金６２の部材６２ｄに対する加圧回転に
より条痕Ｇ２が付き、塗装面が削られてとともに導通が
取られることになる。FIG. 9 is a partially enlarged cross-sectional view showing an example of a conventional ground conduction structure of a receiving / distributing panel and a control panel casing. In the drawing, resistance welding of a nut, so-called nut weld 63, is applied to the skeleton side member 62c before painting. On the other hand, a toothed washer 62 having sharp irregularities on the washer is sandwiched between the inner member 62d under the spring washer 61a and the washer 61b, that is, on the side of the member 62d. To conclude. As a result of this fastening, a streak G2 is formed by the pressure rotation of the toothed washer 62 with respect to the member 62d, so that the painted surface is cut and conduction is achieved.
【０００６】[0006]
【発明が解決しようとする課題】一般的には、上記歯付
座金６２を用いた方法で導通機能を得ることができる
が、筐体には、その外側面、及び底面等、板面からの突
起が許容できない箇所がある。このような場所には、歯
付座金８２を利用することは困難で、ほとんどの場合や
すりがけ等の手作業に頼らざるを得ない。In general, a conductive function can be obtained by the method using the toothed washer 62. There are places where projections are not acceptable. In such a place, it is difficult to use the toothed washer 82, and in most cases, it is necessary to rely on manual work such as sanding.
【０００７】しかしながら、手作業では実際に確実な導
通が図られているかどうかを確認することが困難であ
り、そのために導通不良を起こすおそれがある。さら
に、手作業は歯付座金６２を使用する方法に比べると非
常に手間がかかるため、コストを上昇させる原因となっ
ているのが現状である。However, it is difficult to manually confirm whether or not reliable conduction is actually achieved, which may result in poor conduction. Further, the manual operation is much more laborious than the method using the toothed washer 62, and at present, it is a cause of increasing costs.
【０００８】一方、現在、受・配電盤及び制御盤の小型
化、高密度化が要求される趨勢にあり、それに伴って受
・配電盤及び制御盤の安全性のさらなる向上が求められ
ている。On the other hand, at present, there is a trend to require miniaturization and high density of the receiving / distributing panel and the control panel, and accordingly, further improvement of the safety of the receiving / distributing panel and the control panel is required.
【０００９】本発明は、このような実情を考慮してなさ
れたもので、板平面からの突起が許容できない箇所にお
いても、簡便かつ確実な接地導通を図ることができ、ひ
いては筐体製造コストの低減を図ることのできる接地導
通構造を提供することを目的とする。The present invention has been made in view of such circumstances, and enables easy and reliable grounding conduction even in locations where projections from the plate plane are not permissible. It is an object of the present invention to provide a ground conduction structure that can be reduced.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
に、請求項１に対応する発明は、塗装された部材間を締
結するとともに、当該部材間を同電位にするための接地
導通構造において、一方の部材から他方の部材へ向け
て、ネジ頭に回転方向と平行でない方向に突出した切刃
部及び電気伝導性を有する皿型のタッピングネジを螺入
し、切刃部により一方の部材を傷つけ加工を施し、ま
た、タッピングネジのネジ部により他方の部材のネジ部
素材を変形させることで、一方の部材及び他方の部材の
塗装面をはがし、タッピングネジを介して一方の部材と
他方の部材と間の接地導通を実現する接地導通構造であ
る。According to a first aspect of the present invention, there is provided a ground conduction structure for fastening painted members to each other and for equalizing potential between the members. From one member to the other member, a cutting blade portion protruding in a direction not parallel to the rotation direction and a dish-shaped tapping screw having electrical conductivity are screwed into the screw head, and the cutting blade portion forms one member by the cutting blade portion. The screw part of the other member is deformed by the screw part of the tapping screw, so that the painted surfaces of one member and the other member are peeled off, and one member and the other member are removed via the tapping screw. Is a ground conduction structure that realizes ground conduction between the members.
【００１１】本発明はこのような手段を設けたので、受
・配電盤及び制御盤筐体等において、板平面からの突起
が許容できない箇所においても、簡便かつ確実な接地導
通を図ることができ、ひいてはコストの低減を図ること
のできる。According to the present invention, since such means are provided, simple and reliable grounding can be achieved even in a place where a projection from a plate plane is not allowed in a receiving / distributing panel, a control panel casing, or the like. As a result, cost can be reduced.
【００１２】次に、請求項２に対応する発明は、請求項
１に対応する発明において、切刃部は、螺旋スクリュー
状切刃からなっている接地導通構造である。本発明はこ
のような手段を設けたので、請求項１に係る発明と同様
な効果を奏することができる。A second aspect of the present invention is the invention according to the first aspect, wherein the cutting edge portion is a ground conduction structure comprising a spiral screw-shaped cutting edge. Since the present invention is provided with such means, the same effects as those of the invention according to claim 1 can be obtained.
【００１３】次に、請求項３に対応する発明は、塗装さ
れた部材間を締結するとともに、当該部材間を同電位に
するための接地導通構造において、一方の部材から他方
の部材へ向けて、ネジの回転方向と平行でない方向に突
出した切刃部及び電気伝導性を有する座金を介して、電
気伝導性を有する皿型のタッピングネジを螺入し、切刃
部により一方の部材を傷つけ加工を施し、また、タッピ
ングネジのネジ部により他方の部材のネジ部素材を変形
させることで、一方の部材及び他方の部材の塗装面をは
がし、タッピングネジ及び座金を介して一方の部材と他
方の部材と間の接地導通を実現する接地導通構造であ
る。Next, a third aspect of the present invention is to provide a ground conduction structure for fastening painted members to each other and for equalizing the potentials between the members, from one member to the other member. An electric conductive dish-shaped tapping screw is screwed through a cutting blade portion protruding in a direction not parallel to the rotation direction of the screw and a washer having electric conductivity, and one member is damaged by the cutting blade portion. Processing, and by deforming the screw material of the other member with the screw part of the tapping screw, the painted surface of one member and the other member is peeled off, and the other member and the other member are separated via the tapping screw and the washer. Is a ground conduction structure that realizes ground conduction between the members.
【００１４】本発明はこのような手段を設けたので、請
求項１に係る発明と同様な効果を奏する他、座金は締結
に伴ってつぶれていくので、より強い締結力で部材を固
定することができる。According to the present invention, since such means are provided, the same effects as those of the first aspect of the invention can be obtained. In addition, since the washer is crushed with the fastening, the member can be fixed with a stronger fastening force. Can be.
【００１５】次に、請求項４に対応する発明は、塗装さ
れた部材間を締結するとともに、当該部材間を同電位に
するための接地導通構造において、一方の部材から他方
の部材へ向けてイモ型のタッピングネジを螺入し、タッ
ピングネジのネジ部により一方の部材及び他方の部材の
各ネジ部素材を変形させることで、両部材の塗装面をは
がし、タッピングネジを介して一方の部材と他方の部材
と間の接地導通を実現する接地導通構造である。Next, according to a fourth aspect of the present invention, there is provided a ground conduction structure for fastening painted members to each other and for equalizing the potential between the members, from one member to the other member. A potato-type tapping screw is screwed in, and the threaded portions of the tapping screw are used to deform the material of the screw portion of one member and the other member. And a ground conduction structure for realizing the ground conduction between the first member and the other member.
【００１６】本発明はこのような手段を設けたので、請
求項１に係る発明と同様な効果を奏する他、皿穴加工を
施す必要がないので部材に対する加工の手間を少なくす
ることができる。According to the present invention, since such means are provided, the same effects as those of the first aspect of the present invention can be obtained. In addition, since it is not necessary to perform countersinking, it is possible to reduce the labor for processing the members.
【００１７】次に、請求項５に対応する発明は、塗装さ
れた部材間を締結するとともに、当該部材間を同電位に
するための接地導通構造において、一方の部材から他方
の部材へ向けて皿型のタッピングネジを螺入し、タッピ
ングネジのネジ部により一方の部材及び他方の部材の各
ネジ部素材を変形させることで、両部材の塗装面をはが
し、タッピングネジを介して一方の部材と他方の部材と
間の接地導通を実現する接地導通構造である。Next, according to a fifth aspect of the present invention, there is provided a ground conduction structure for fastening painted members to each other and for equalizing the potential between the members, from one member to the other member. A countersunk tapping screw is screwed in, and the threaded portion of the tapping screw is used to deform each screw material of one member and the other member, so that the painted surfaces of both members are peeled off, and one member is removed via the tapping screw. And a ground conduction structure for realizing the ground conduction between the first member and the other member.
【００１８】本発明はこのような手段を設けたので、切
刃部を設けることなく請求項１に係る発明と同様な効果
が得られる他、部材皿穴とタッピングネジ皿部とが全面
で接することから、より強い締結力で部材を固定するこ
とができる。In the present invention, since such means are provided, the same effect as that of the invention according to claim 1 can be obtained without providing a cutting edge portion, and the countersunk hole of the member and the tapping screw counterspan contact the entire surface. Therefore, the member can be fixed with a stronger fastening force.
【００１９】[0019]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。各実施形態は、受・配電盤及び制御盤筐体
を構成するパネル、棚板、扉等からなる全体が塗装処理
された鋼製の部材を同電位差にするために、本発明の接
地導通構造を用いる場合で説明する。 （発明の第１の実施の形態）図１は本発明の第１の実施
の形態に係る受・配電盤及び制御盤筐体の接地導通構造
の構成例を示す部分詳細拡大断面図である。Embodiments of the present invention will be described below. Each embodiment, the panel constituting the receiving / distribution panel and the control panel housing, the shelf plate, the whole of the painted steel member consisting of the door, etc. to the same potential difference, the ground conduction structure of the present invention, A description will be given in the case of using. (First Embodiment of the Invention) FIG. 1 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a power receiving / distribution panel and a control panel casing according to a first embodiment of the present invention.
【００２０】図２は図１の上面図である。同図では切刃
による条痕の様子が分かるように皿型タッピングネジ１
を割愛している。図３は図１の皿型タッピングネジの部
分拡大立体図であり、切刃の特徴を示すものである。FIG. 2 is a top view of FIG. In the same figure, a countersunk tapping screw 1
Is omitted. FIG. 3 is a partially enlarged three-dimensional view of the dish-shaped tapping screw of FIG. 1 and shows the features of the cutting blade.
【００２１】図１に示すように接地導通構造は、筐体の
締結されるべき一方の部材２ａ及び他方の部材２ｂが皿
型タッピングネジ１によって締結されることで構成され
ている。As shown in FIG. 1, the ground conduction structure is formed by fastening one member 2a and the other member 2b of the housing to be fastened with a dish-shaped tapping screw 1.
【００２２】ここで、使用する皿型タッピングネジ１
は、そのネジ径について、必要な下穴径φＦが筐体内面
側の部材２ｂの板厚Ｅ２より大きくなる形状（ネジ径）
になっている。また開き角をＢとし、その他の寸法は任
意である。Here, the dish-shaped tapping screw 1 to be used
Is a shape (screw diameter) in which the required pilot hole diameter φF is larger than the plate thickness E2 of the member 2b on the inner surface side of the housing.
It has become. The opening angle is B, and other dimensions are arbitrary.
【００２３】このタッピングネジ１には、さらに、図３
に示すように、ネジの回転方向に垂直に、かつ対向する
向きの切刃１ａが設けられている。つまりこの切刃１ａ
は皿の円錐面に対して浮きＤ（図１）だけ突出し、その
突出する切込面１ａ′がネジの回転とともに、その進行
方向の逆方向に対面するように当該面１ａ′が設けられ
ている。また切刃１ａの個数は２個以上で軸対称に配置
される。The tapping screw 1 further has a
As shown in FIG. 3, a cutting blade 1a is provided perpendicularly to the direction of rotation of the screw and facing the opposite direction. That is, this cutting blade 1a
Protrudes from the conical surface of the dish by a lift D (FIG. 1), and the protruding cut surface 1a 'is provided so that the protruding cut surface 1a' faces in the direction opposite to the traveling direction with the rotation of the screw. I have. The number of the cutting blades 1a is two or more and they are arranged axially symmetrically.
【００２４】部材側の加工は、筐体表面に露出する側の
部材２ａに対しては、予めプレス機等で外面直径φＡ、
開き角Ｂの皿穴が設けられている。また筐体内面側の部
材２ｂに対しては、皿型タッピングネジ１のネジ径に必
要な下穴加工が施されている。外面直径φＡの決定方法
は、タッピングネジ１が切刃１ａによる浮きＤを加えて
も、表面から沈込量Ｃだけ部材２ａの内部に配置できる
ように選択する。The processing of the member side is carried out in advance with respect to the member 2a on the side exposed on the casing surface by using a press machine or the like in advance with an outer surface diameter φA,
A countersink with an opening angle B is provided. A prepared hole required for the diameter of the countersunk tapping screw 1 is formed in the member 2b on the inner surface side of the housing. The method of determining the outer surface diameter φA is selected so that even if the tapping screw 1 adds the floating D by the cutting blade 1a, the tapping screw 1 can be disposed inside the member 2a by the sinking amount C from the surface.
【００２５】次に、以上のように構成された本発明の実
施の形態に係る接地導通構造の形成動作について説明す
る。接地導通構造を形成するにあたっては、まず、両部
材２ａ，２ｂを同軸に配置し、皿型タッピングネジ１を
螺入する。これにより、筐体表面側の部材２ａには、図
２に示すような条痕Ｇ１がつき、塗装をはがして鋼板面
を露出させる。Next, the operation of forming the ground conduction structure according to the embodiment of the present invention configured as described above will be described. In forming the ground conduction structure, first, both members 2a and 2b are arranged coaxially, and the dish-shaped tapping screw 1 is screwed. As a result, a streak G1 as shown in FIG. 2 is formed on the member 2a on the housing surface side, and the coating is removed to expose the steel plate surface.
【００２６】一方、筐体内面側の部材２ｂは、タッピン
グネジ１による下穴２ｂ１の塑性変形により、下穴２ｂ
１の塗装皮膜が壊され、同じく鋼板面が露出する。鋼板
の露出面はタッピングネジを介して繋がっているので、
完全に接地導通が図られ、しかも板面から突出すること
のない接地導通構造を実現されることになる。On the other hand, the member 2b on the inner surface side of the housing is formed by the plastic deformation of the pilot hole 2b1 by the tapping screw 1 so that the pilot hole 2b
The coating film of No. 1 is broken, and the steel plate surface is also exposed. Since the exposed surface of the steel plate is connected via a tapping screw,
The ground conduction structure is completely achieved, and the ground conduction structure does not protrude from the plate surface.
【００２７】上述したように、本発明の実施の形態に係
る接地導通構造は、受・配電盤及び制御盤筐体等での板
面からの突起が許容できない箇所において、皿穴を予め
設けたのち塗装処理した筐体の外平面２ａと、その皿穴
と同軸にタッピングネジの下穴２ｂ１をあけたのち塗装
処理した内部の被導通部２ｂとに対し、ネジ頭に回転方
向に対向した切刃加工１ａを施した鋼製皿型タッピング
ネジ１を螺入し、切刃１ａによる傷つけ加工とネジ１に
よる下穴２ｂ１での素材変形によりそれぞれ鋼板面を露
出させるようにしたので、板平面からの突起が許容でき
ない箇所においても、簡便かつ確実に更には低コストで
接地導通を図ることができる。As described above, according to the ground conduction structure according to the embodiment of the present invention, countersunk holes are provided in advance at locations where projections from the plate surface of the power receiving / distribution panel, control panel housing, and the like are not allowed. A cutting blade that faces the screw head in the rotation direction with respect to the outer flat surface 2a of the painted housing and the inner conductive portion 2b that is formed by drilling a pilot hole 2b1 of the tapping screw coaxially with the countersunk hole and then painting. A steel dish-type tapping screw 1 having been subjected to the processing 1a was screwed in, and the steel plate surface was exposed by the scratching processing by the cutting blade 1a and the material deformation in the prepared hole 2b1 by the screw 1, so that the steel plate surface was exposed. Even in a place where the projection cannot be tolerated, the grounding conduction can be easily and reliably achieved at a low cost.
【００２８】すなわち板面から外へ突出しないような構
造としたことで、板面からの突起が許容できない箇所で
も手作業によらず確実な接地導通を図ることができ、ま
た、締結の機能と導通の機能を分離したことで、締結及
び導通を１本のタッピングネジ１で実現することができ
る。In other words, by adopting a structure that does not protrude outside from the plate surface, reliable grounding conduction can be achieved without manual work even in a place where protrusion from the plate surface is not allowed. By separating the function of conduction, fastening and conduction can be realized with one tapping screw 1.
【００２９】（変形例１）本実施形態の接地導通構造に
おいては皿型タッピングネジ１の切刃形状を種々変形さ
せることができる。その変形の一例を図４に示す。(Modification 1) In the ground conduction structure of the present embodiment, the shape of the cutting edge of the countersunk tapping screw 1 can be variously modified. FIG. 4 shows an example of the modification.
【００３０】図４は同実施形態の一変形例におけるネジ
の切刃形状の構成例を示す部分拡大立体図である。同図
に示す皿型タッピングネジ１においては、切刃として、
その切刃面１ｂ′が回転方向に対向しかつネジの回転進
行時にその進行方向の逆方向に対面するように、螺旋ス
クリュー状の突起１ｂが設けられている。FIG. 4 is a partially enlarged three-dimensional view showing a configuration example of a cutting edge shape of a screw in a modification of the embodiment. In the dish-shaped tapping screw 1 shown in FIG.
A helical screw-shaped projection 1b is provided so that its cutting edge surface 1b 'faces in the rotational direction and faces in the direction opposite to the traveling direction when the screw rotates.
【００３１】このように構成されたネジ１を使用すれ
ば、ネジ１を締結する際に当該ネジ１を回転螺入するこ
とにより、その螺旋スクリュー状の突起１ｂによって塗
装がはがされ、導通構造が形成される。When the screw 1 configured as described above is used, when the screw 1 is fastened, the screw 1 is rotationally screwed in, so that the coating is removed by the spiral screw-shaped projection 1b, and the conductive structure is formed. Is formed.
【００３２】したがって、接地導通構造によれば、螺旋
スクリュー状の突起１ｂ及びその切刃面１ｂ′を皿の円
錐面に対応する位置に設けた形状であっても、上記と同
様な効果を得ることができる。Therefore, according to the ground conduction structure, the same effect as described above can be obtained even if the spiral screw-shaped projection 1b and its cutting edge surface 1b 'are provided at positions corresponding to the conical surface of the dish. be able to.
【００３３】（変形例２）次に本実施形態の他の変形例
として、皿型タッピングネジ自体には切刃を設けず、切
刃を有する座金をネジ〜部材２ａ間に挿入する場合を説
明する。(Modification 2) Next, as another modification of the present embodiment, a case where a countersunk tapping screw itself is not provided with a cutting edge but a washer having a cutting edge is inserted between the screw and the member 2a will be described. I do.
【００３４】図５は同実施形態の他の変形例における座
金及びネジの形状の構成例を示す部分立体図である。こ
の変形例では、ネジ〜部材２ａ間に切刃３ａを施した筒
状の切刃座金３が設けられるとともに、皿型タッピング
ネジ１ｃに切欠１ｄが設けられる。FIG. 5 is a partial three-dimensional view showing a configuration example of the shape of the washer and the screw in another modification of the embodiment. In this modified example, a cylindrical cutting blade washer 3 having a cutting blade 3a is provided between a screw and a member 2a, and a notch 1d is provided in a dish-shaped tapping screw 1c.
【００３５】切刃座金３は、電気伝導性を有するととも
に、皿型タッピングネジ１ｃに接するように構成され
る。また、その切刃３ａは、その切刃面が回転方向に対
向しかつネジの回転進行時にその進行方向の逆方向に対
面するように、切刃座金３に切り込まれる。The cutting washer 3 has electrical conductivity and is configured to be in contact with the dish-shaped tapping screw 1c. The cutting edge 3a is cut into the cutting washer 3 such that the cutting surface faces in the rotating direction and faces in the direction opposite to the traveling direction when the screw rotates.
【００３６】また、タッピングネジ１ｃの切欠１ｄは、
外側に切刃３ａを設けたため内側に切れ込んだ切刃座金
３の部分が、ネジ１ｃ〜切刃座金３間のスムーズな接触
の邪魔にならない程度に切欠いたものである。この切欠
１ｄは、切刃座金３の上記内側切り込み部分の引っ掛か
りによって、タッピングネジ１ｃと切刃座金３とが一体
で回転できるように設けられたものである。The notch 1d of the tapping screw 1c is
Since the cutting blade 3a is provided on the outer side, the portion of the cutting blade washer 3 that is cut inward is notched so as not to hinder smooth contact between the screw 1c and the cutting blade washer 3. The notch 1d is provided so that the tapping screw 1c and the cutting washer 3 can be integrally rotated by being caught by the inner cut portion of the cutting washer 3.
【００３７】このように構成された座金３及びネジ１ｃ
を使用すれば、ネジ１ｃを締結する際に、切刃座金３が
ネジ１ｃとともに一体となって回転し螺入され、その切
刃３ａによって導通構造が形成される。The washer 3 and the screw 1c thus configured
Is used, when the screw 1c is fastened, the cutting blade washer 3 rotates integrally with the screw 1c and is screwed in, and a conductive structure is formed by the cutting blade 3a.
【００３８】本変形例の接地導通構造によれば、切欠１
ｄを施した切欠つき皿型タッピングネジ１ｃによって
も、上記と同様な効果を得ることができる。また、本変
形例のようにタッピングネジを切刃座金３と切欠付きタ
ッピングネジ１ｃとに分割すると、タッピングネジ１ｃ
が螺入されるに従い、座金が塗装をはがしながら徐々に
押しつぶされるので、タッピングネジの締結力がより増
加するという利点を持つ。（発明の第２の実施の形態）
図６は本発明の第２の実施の形態に係る受・配電盤及び
制御盤筐体の接地導通構造の構成例を示す部分詳細拡大
断面図である。According to the ground conduction structure of this modification, the notch 1
The same effect as described above can also be obtained by using the notched dish-shaped tapping screw 1c provided with d. When the tapping screw is divided into the cutting washer 3 and the notched tapping screw 1c as in the present modification, the tapping screw 1c is formed.
As the is screwed in, the washer is gradually crushed while peeling off the coating, so that there is an advantage that the fastening force of the tapping screw is further increased. (Second embodiment of the invention)
FIG. 6 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a receiving / distributing panel and a control panel casing according to a second embodiment of the present invention.
【００３９】本実施形態の接地導通構造は、第１の実施
形態と同様な状況において構成されるものである。本実
施形態では、タッピングネジ４を皿型から皿のないイモ
型に変更したことが第１の実施形態と異なっている。The ground conduction structure of the present embodiment is constructed in the same situation as in the first embodiment. The present embodiment is different from the first embodiment in that the tapping screw 4 is changed from a dish type to a potato type without a dish.
【００４０】図６において、使用するイモ型タッピング
ネジ４は、必要な下穴径φＦが両部材２ａ，２ｂの板厚
Ｅ１，Ｅ２より大きくなるようなネジ径形状となってい
る。ネジの頭部４ａは、組立性を考えプラスドライバー
用とする。In FIG. 6, the potato tapping screw 4 used has a screw diameter shape such that the required pilot hole diameter φF is larger than the plate thicknesses E1 and E2 of both members 2a and 2b. The screw head 4a is used for a Phillips screwdriver for ease of assembly.
【００４１】部材側には、両部材２ａ′，２ｂともにタ
ッピングネジの下穴加工が施されている。次に、以上の
ように構成された本発明の実施の形態に係る接地導通構
造の形成動作について説明する。On the member side, both holes 2a 'and 2b are pre-drilled with tapping screws. Next, an operation of forming the ground conduction structure according to the embodiment of the present invention configured as described above will be described.
【００４２】接地導通構造を形成するにあたっては、ま
ず、両部材２ａ′，２ｂを同軸に配置し、イモ型タッピ
ングネジ４を、板面から完全に内側にネジ頭が来るまで
螺入する。板面からネジ頭までの長さはＣである。これ
により、両部材２ａ，２ｂとも、タッピングネジによる
下穴２ａ′１，２ｂ１の塑性変形により、各下穴２ａ′
１，２ｂ１の塗装皮膜が壊され、鋼板面が露出する。鋼
板の露出面はタッピングネジを介して繋がっているの
で、完全に接地導通が図られ、しかも板面から突出する
ことのない接地導通構造が実現される。In forming the ground conduction structure, first, the two members 2a 'and 2b are arranged coaxially, and the potato type tapping screw 4 is screwed in until the screw head comes completely inward from the plate surface. The length from the plate surface to the screw head is C. Thereby, both members 2a and 2b are each prepared by the plastic deformation of the prepared holes 2a'1 and 2b1 by the tapping screw.
The coating films 1 and 2b1 are broken, and the steel plate surface is exposed. Since the exposed surface of the steel plate is connected via the tapping screw, ground conduction is completely achieved, and a ground conduction structure that does not protrude from the plate surface is realized.
【００４３】上述したように、本発明の実施の形態に係
る接地導通構造は、同軸に下穴２ａ′１，２ｂ１を明
け、塗装された導通を取る両部材２ａ′，２ｂへ、皿の
無いイモ型のタッピングネジ４を螺入し、この両部材の
下穴に塑性変形を起して塗装をはがし、タッピングネジ
４を介して接地導通を取るようにしたので、第１の実施
形態と同様な効果が得られる他、皿穴加工を施す必要が
なく、加工の手間が軽減させることができる。 （発明の第３の実施の形態）図７は本発明の第３の実施
の形態に係る受・配電盤及び制御盤筐体の接地導通構造
の構成例を示す部分詳細拡大断面図である。As described above, in the ground conduction structure according to the embodiment of the present invention, the pilot holes 2a'1 and 2b1 are coaxially drilled, and the painted two members 2a 'and 2b which take conduction have no dish. A potato type tapping screw 4 is screwed in, and the pilot hole of both members is plastically deformed to remove the paint, and ground conduction is established through the tapping screw 4, so that it is the same as in the first embodiment. In addition to the above-mentioned effects, there is no need to perform countersinking, and the labor for processing can be reduced. (Third Embodiment of the Invention) FIG. 7 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a receiving / distributing panel and a control panel casing according to a third embodiment of the present invention.
【００４４】本実施形態の接地導通構造は、第１の実施
形態と同様な状況において構成されるものである。本実
施形態では、タッピングネジの皿形状及び筐体の表面に
明ける皿穴を薄型にした点が第１の実施形態と異なって
いる。The ground conduction structure of the present embodiment is constructed in the same situation as in the first embodiment. The present embodiment is different from the first embodiment in that the shape of the tapping screw and the shape of a countersunk hole formed in the surface of the housing are reduced.
【００４５】図７において、使用する皿型タッピングネ
ジ５は、そのネジ径について、必要な下穴径φＦが筐体
内面側の部材２ｂの板厚Ｅ２より大きくなる形状（ネジ
径）になっている。また、開き角Ｈを図１の角Ｂよりも
鈍角にして、皿の形状を薄型にする。その他の寸法は任
意である。この薄型皿型タッピングネジ５に対しては、
図１に示したような切刃はつかない。In FIG. 7, the countersunk tapping screw 5 used has such a shape (screw diameter) that the required pilot hole diameter φF is larger than the plate thickness E2 of the member 2b on the inner surface side of the housing. I have. Further, the opening angle H is made obtuse than the angle B in FIG. 1 to make the shape of the dish thin. Other dimensions are arbitrary. For this thin countersunk tapping screw 5,
The cutting blade as shown in FIG. 1 is not attached.
【００４６】部材側の加工は、筐体表面に露出する側の
部材２ａ”に対し、予めプレス機等で外面直径φＪ、開
き角Ｈ下穴φＦの皿穴６を設ける。また、部材２ａ”の
皿穴以下及び筐体内面側の部材２ｂに対し、タッピング
ネジ５のネジ径に必要な下穴加工φＦを施す。外面直径
φＪの決定方法は、タッピングネジ５が表面からＣだけ
内部に配置でき、かつ、このような皿穴加工を施しても
部材２ａ”側に長さＩだけ下穴部２ａ”１が残るような
ものとする。In the processing on the member side, a countersink 6 having an outer surface diameter φJ and an opening angle H pilot hole φF is provided in advance on the member 2a ″ exposed on the housing surface by a press or the like. In the member 2b below the countersink hole and on the inner surface side of the housing, a pilot hole processing φF required for the screw diameter of the tapping screw 5 is performed. The method of determining the outer surface diameter φJ is such that the tapping screw 5 can be arranged only C inside from the surface, and even if such countersinking is performed, the prepared hole 2a ″ 1 remains on the member 2a ″ side by the length I. It is assumed that
【００４７】次に、以上のように構成された本発明の実
施の形態に係る接地導通構造の形成動作について説明す
る。接地導通構造を形成するにあたっては、まず、両部
材２ａ”，２ｂを同軸に配置し、薄型皿型タッピングネ
ジ５を螺入する。これにより、筐体表面側の部材２ａの
下穴部２ａ”１、及び筐体内面側の部材２ｂの下穴部２
ｂ１では、タッピングネジによる塑性変形により、各下
穴部２ａ”１，２ｂ１の塗装皮膜が壊され、鋼板面が露
出する。鋼板の露出面はタッピングネジ５を介して繋が
っているので、完全に接地導通が図られ、しかも板面か
ら突出することのない接地導通構造が実現される。Next, an operation of forming the ground conduction structure according to the embodiment of the present invention configured as described above will be described. In forming the ground conduction structure, first, the two members 2a "and 2b are arranged coaxially, and the thin flat type tapping screw 5 is screwed in. Thereby, the pilot hole 2a" of the member 2a on the front surface side of the housing is formed. 1, and a prepared hole 2 of a member 2b on the inner surface side of the housing
In b1, the plastic film of each pilot hole 2a ", 1b1 is broken by plastic deformation by the tapping screw, and the steel plate surface is exposed. Since the exposed surface of the steel plate is connected via the tapping screw 5, it is completely removed. Ground conduction is achieved, and a ground conduction structure that does not protrude from the plate surface is realized.
【００４８】上述したように、本発明の実施の形態に係
る接地導通構造は、皿穴を予め設けさらにタッピングネ
ジの下穴２ａ”１をあけたのち塗装処理した筐体外平面
の部材２ａ”と、その皿穴と同軸にタッピングネジの下
穴２ｂ１をあけたのち塗装処理した内部の被導通部材２
ｂに対し、通常の皿ネジの開き角よりも鈍角で切刃のな
い薄型皿型タッピングネジ５を螺入し、この両部材２
ａ”，２ｂの両下穴２ａ”１，２ｂ１に塑性変形を起す
ことによって塗装をはがし、タッピングネジ５を介して
接地導通を取るようにしたので、第１の実施形態と同様
な効果が得られる他、皿穴とネジの皿部が全面で接触す
るため、締結力が増すという効果を得ることができる。
なお、本発明は、上記各実施の形態に限定されるもので
なく、その要旨を逸脱しない範囲で種々に変形すること
が可能である。As described above, the grounding conduction structure according to the embodiment of the present invention has a countersunk hole in advance, furthermore, drills a pilot hole 2a "1 of a tapping screw, and then paints and processes the member 2a" on the outer surface of the housing. The inner conductive member 2 is formed by drilling a pilot hole 2b1 of the tapping screw coaxially with the countersink hole and then performing a coating process.
b, a thin flat type tapping screw 5 having an obtuse angle smaller than the opening angle of a normal flat screw and having no cutting edge is screwed in.
The paint is removed by causing plastic deformation in both pilot holes 2a "and 2b1 of a" and 2b, and ground conduction is established via the tapping screw 5, so that the same effect as in the first embodiment is obtained. In addition, since the countersunk hole and the countersunk portion of the screw are in contact with each other on the entire surface, the effect of increasing the fastening force can be obtained.
The present invention is not limited to the above embodiments, and can be variously modified without departing from the gist thereof.
【００４９】[0049]
【発明の効果】以上詳記したように本発明によれば、板
平面からの突起が許容できない箇所においても、簡便か
つ確実な接地導通を図ることができ、ひいては筐体製造
コストの低減を図ることのできる接地導通構造を提供す
ることができる。As described in detail above, according to the present invention, simple and reliable grounding conduction can be achieved even at locations where projections from the plate plane cannot be tolerated, thereby reducing the manufacturing cost of the housing. The ground conduction structure which can be provided.
【図１】本発明の第１の実施の形態に係る受・配電盤及
び制御盤筐体の接地導通構造の構成例を示す部分詳細拡
大断面図。FIG. 1 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a receiving / distribution panel and a control panel casing according to a first embodiment of the present invention.
【図２】ネジ螺入の結果、皿穴部にて塗装の剥がれた部
分の様子を示す上面図。FIG. 2 is a top view showing the state of a portion where the coating has been peeled off at the countersink portion as a result of screwing.
【図３】図１の皿型タッピングネジの部分拡大立体図。FIG. 3 is a partially enlarged three-dimensional view of the countersunk tapping screw of FIG. 1;
【図４】同実施形態の一変形例におけるネジの切刃形状
の構成例を示す部分拡大立体図。FIG. 4 is a partially enlarged three-dimensional view showing a configuration example of a cutting edge shape of a screw in a modified example of the embodiment.
【図５】同実施形態の他の変形例における座金及びネジ
の形状の構成例を示す部分立体図。FIG. 5 is a partial three-dimensional view showing a configuration example of the shape of a washer and a screw in another modification of the embodiment.
【図６】本発明の第２の実施の形態に係る受・配電盤及
び制御盤筐体の接地導通構造の構成例を示す部分詳細拡
大断面図。FIG. 6 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a receiving / distributing panel and a control panel casing according to a second embodiment of the present invention.
【図７】本発明の第３の実施の形態に係る受・配電盤及
び制御盤筐体の接地導通構造の構成例を示す部分詳細拡
大断面図。FIG. 7 is a partially detailed enlarged sectional view showing a configuration example of a ground conduction structure of a receiving / distributing panel and a control panel casing according to a third embodiment of the present invention.
【図８】従来の受・配電盤及び制御盤筐体の構造例を示
す立体組立図。FIG. 8 is a three-dimensional assembly diagram showing a structural example of a conventional power receiving / distribution panel and a control panel housing.
【図９】従来の受・配電盤及び制御盤筐体の接地導通構
造の一例を示す部分拡大断面図。FIG. 9 is a partially enlarged cross-sectional view showing an example of a conventional ground conduction structure of a receiving / distributing panel and a control panel casing.
１…切刃付き皿型タッピングネジ、 １ａ…切刃 １ａ′…切刃面 １ｂ…螺旋スクリュー状切刃 １ｂ′…切刃面 １ｃ…切欠き皿型タッピングネジ １ｄ…切欠 ２ａ，２ａ′，２ａ”…筐体表面側の部材 ２ａ′１，２ａ”１…部材２ａ′，２ａ”側の下穴部 ２ｂ…筐体内面側の部材 ２ｂ１…部材２ｂ側の下穴部 ３…筒型切刃座金 ３ａ…筒型切刃座金の切刃 ４…イモ型タッピングネジ ５…薄型皿型タッピングネジ、 ６…皿穴 ５６…側面枠 ５７…前面扉 ５８…背面扉 ５９…天井パネル ６０…床パネル DESCRIPTION OF SYMBOLS 1 ... Dish type tapping screw with a cutting edge 1a ... Cutting edge 1a '... Cutting edge surface 1b ... Helical screw-shaped cutting edge 1b' ... Cutting edge surface 1c ... Notched plate type tapping screw 1d ... Notch 2a, 2a ', 2a "... members on the front surface side of the housing 2a'1, 2a" 1 ... prepared holes on the members 2a 'and 2a "side 2b ... members on the inner surface side of the housing 2b1 ... prepared holes on the member 2b side 3 ... cylindrical cutting edge Washer 3a ... Cylinder cutting blade Washer cutting blade 4 ... Pink type tapping screw 5 ... Thin plate type tapping screw 6 ... Counterbore hole 56 ... Side frame 57 ... Front door 58 ... Back door 59 ... Ceiling panel 60 ... Floor panel
Claims (5)
当該部材間を同電位にするための接地導通構造におい
て、 一方の部材から他方の部材へ向けて、ネジ頭に回転方向
と平行でない方向に突出した切刃部及び電気伝導性を有
する皿型のタッピングネジを螺入し、 前記切刃部により前記一方の部材を傷つけ加工を施し、
また、前記タッピングネジのネジ部により前記他方の部
材のネジ部素材を変形させることで、前記一方の部材及
び前記他方の部材の塗装面をはがし、 前記タッピングネジを介して前記一方の部材と前記他方
の部材と間の接地導通を実現することを特徴とする接地
導通構造。1. A method for fastening between painted members,
In the ground conduction structure for setting the same potential between the members, a dish-shaped portion having an electric conductivity and a cutting blade portion protruding from one member to the other member in a direction not parallel to the rotation direction on the screw head. A tapping screw is screwed in, and the one of the members is damaged by the cutting blade portion.
Further, by deforming the screw material of the other member by the screw portion of the tapping screw, the coating surface of the one member and the other member is peeled off, and the one member and the other member are removed via the tapping screw. A ground conduction structure for realizing ground conduction with the other member.
らなっていることを特徴とする請求項１記載の接地導通
構造。2. The ground conduction structure according to claim 1, wherein said cutting edge portion is formed by a spiral screw-shaped cutting edge.
当該部材間を同電位にするための接地導通構造におい
て、 一方の部材から他方の部材へ向けて、ネジの回転方向と
平行でない方向に突出した切刃部及び電気伝導性を有す
る座金を介して、電気伝導性を有する皿型のタッピング
ネジを螺入し、 前記切刃部により前記一方の部材を傷つけ加工を施し、
また、前記タッピングネジのネジ部により前記他方の部
材のネジ部素材を変形させることで、前記一方の部材及
び前記他方の部材の塗装面をはがし、 前記タッピングネジ及び前記座金を介して前記一方の部
材と前記他方の部材と間の接地導通を実現することを特
徴とする接地導通構造。3. While fastening between painted members,
In the ground conduction structure for setting the same potential between the members, from one member to the other member, via a cutting blade portion protruding in a direction not parallel to the direction of rotation of the screw and a washer having electric conductivity. , Screwing a dish-shaped tapping screw having electrical conductivity, and performing processing to damage the one member by the cutting edge portion,
Further, by deforming the screw portion material of the other member by the screw portion of the tapping screw, the coating surface of the one member and the other member is peeled off, and the one of the one member is removed via the tapping screw and the washer. A ground conduction structure for realizing ground conduction between a member and the other member.
当該部材間を同電位にするための接地導通構造におい
て、 一方の部材から他方の部材へ向けてイモ型のタッピング
ネジを螺入し、 前記タッピングネジのネジ部により前記一方の部材及び
前記他方の部材の各ネジ部素材を変形させることで、両
部材の塗装面をはがし、 前記タッピングネジを介して前記一方の部材と前記他方
の部材と間の接地導通を実現することを特徴とする接地
導通構造。4. While fastening between painted members,
In the ground conduction structure for making the members have the same potential, a potato type tapping screw is screwed in from one member to the other member, and the one member and the other member are screwed by a screw portion of the tapping screw. By deforming each screw portion material of the member, the painted surfaces of both members are peeled off, and ground conduction between the one member and the other member is realized via the tapping screw. Construction.
当該部材間を同電位にするための接地導通構造におい
て、 一方の部材から他方の部材へ向けて皿型のタッピングネ
ジを螺入し、 前記タッピングネジのネジ部により前記一方の部材及び
前記他方の部材の各ネジ部素材を変形させることで、両
部材の塗装面をはがし、前記タッピングネジを介して前
記一方の部材と前記他方の部材と間の接地導通を実現す
ることを特徴とする接地導通構造。5. A method for fastening between painted members,
In the ground conduction structure for setting the same potential between the members, a dish-shaped tapping screw is screwed from one member to the other member, and the one member and the other member are screwed by the screw portion of the tapping screw. By deforming each screw portion material of the member, the painted surface of both members is peeled off, and ground conduction between the one member and the other member is realized via the tapping screw. Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4531398A JPH11241707A (en) | 1998-02-26 | 1998-02-26 | Earth-conductive structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4531398A JPH11241707A (en) | 1998-02-26 | 1998-02-26 | Earth-conductive structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11241707A true JPH11241707A (en) | 1999-09-07 |
Family
ID=12715828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4531398A Pending JPH11241707A (en) | 1998-02-26 | 1998-02-26 | Earth-conductive structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11241707A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002298634A (en) * | 2001-03-30 | 2002-10-11 | Toshiba Lighting & Technology Corp | Illumination device |
| JP2010028956A (en) * | 2008-07-17 | 2010-02-04 | Mitsubishi Electric Corp | Case for power conversion device |
| WO2014152636A1 (en) | 2013-03-15 | 2014-09-25 | United Technologies Corporation | Selective coating removal or masking for ground path |
| JP2015060042A (en) * | 2013-09-18 | 2015-03-30 | リコーイメージング株式会社 | Fastening structure of conductive material member |
| JPWO2013108805A1 (en) * | 2012-01-20 | 2015-05-11 | 矢崎総業株式会社 | Ground connection structure and manufacturing method thereof |
| CN112128199A (en) * | 2019-06-24 | 2020-12-25 | 施耐德电器工业公司 | Electrical enclosure with attachment panel |
-
1998
- 1998-02-26 JP JP4531398A patent/JPH11241707A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002298634A (en) * | 2001-03-30 | 2002-10-11 | Toshiba Lighting & Technology Corp | Illumination device |
| JP4501049B2 (en) * | 2001-03-30 | 2010-07-14 | 東芝ライテック株式会社 | Lighting device |
| JP2010028956A (en) * | 2008-07-17 | 2010-02-04 | Mitsubishi Electric Corp | Case for power conversion device |
| JPWO2013108805A1 (en) * | 2012-01-20 | 2015-05-11 | 矢崎総業株式会社 | Ground connection structure and manufacturing method thereof |
| US10381793B2 (en) | 2012-01-20 | 2019-08-13 | Yazaki Corporation | Ground connection structure |
| WO2014152636A1 (en) | 2013-03-15 | 2014-09-25 | United Technologies Corporation | Selective coating removal or masking for ground path |
| EP2971610A4 (en) * | 2013-03-15 | 2016-05-04 | United Technologies Corp | Selective coating removal or masking for ground path |
| US9422821B2 (en) | 2013-03-15 | 2016-08-23 | United Technologies Corporation | Selective coating removal or masking for ground path |
| JP2015060042A (en) * | 2013-09-18 | 2015-03-30 | リコーイメージング株式会社 | Fastening structure of conductive material member |
| CN112128199A (en) * | 2019-06-24 | 2020-12-25 | 施耐德电器工业公司 | Electrical enclosure with attachment panel |
| CN112128199B (en) * | 2019-06-24 | 2024-05-31 | 施耐德电器工业公司 | Electrical enclosure with attachment panel |
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