JP2992184B2 - Insulated operating rod - Google Patents
Insulated operating rodInfo
- Publication number
- JP2992184B2 JP2992184B2 JP5309249A JP30924993A JP2992184B2 JP 2992184 B2 JP2992184 B2 JP 2992184B2 JP 5309249 A JP5309249 A JP 5309249A JP 30924993 A JP30924993 A JP 30924993A JP 2992184 B2 JP2992184 B2 JP 2992184B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical portion
- connection fitting
- insulating rod
- peripheral surface
- male screw
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
- H01H2033/426—Details concerning the connection of the isolating driving rod to a metallic part
Landscapes
- Insulating Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電力用遮断器等の充
電部に用いる絶縁操作ロッドに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated operating rod used for a charging section such as a power circuit breaker.
【０００２】[0002]
【従来の技術】図２１の例えば実開昭５６−１６７４３
４号公報に示された従来の遮断器用絶縁操作ロッドの構
造の一部破断を示す正面図である。図において、１は両
端部にめねじ１ａを有する絶縁棒で、例えばガラス繊維
強化プラスチックなどの絶縁材料を加工したものであ
る。２は植込ボルトで、めねじ１ａにねじ込んである。
３は周状の突部３ａを絶縁棒１に嵌合しながら締め付け
た袋ナットで、締め付けのゆるみ防止のために絶縁棒１
と植込ボルト２との接触面および絶縁棒１と袋ナット３
との接触面は接着剤で固着している。2. Description of the Related Art FIG.
FIG. 4 is a front view showing a partly broken structure of a conventional insulating operation rod for a circuit breaker disclosed in Japanese Unexamined Patent Application Publication No. 4 (Kokai) 4; In the drawing, reference numeral 1 denotes an insulating rod having female threads 1a at both ends, which is formed by processing an insulating material such as glass fiber reinforced plastic. A stud 2 is screwed into the female screw 1a.
Reference numeral 3 denotes a cap nut which is tightened while fitting the circumferential projection 3a to the insulating rod 1. The insulating rod 1 is used to prevent loosening of the tightening.
Contact surface with stud 2 and insulating rod 1 and cap nut 3
The contact surface is fixed with an adhesive.
【０００３】絶縁操作ロッドは、使用状態によって軸方
向の荷重だけでなく曲げ方向の荷重がかかる。軸方向の
荷重はねじ部で負担する。曲げ方向の荷重に対しては袋
ナット３の突部３ａによって絶縁棒１の端部における割
れが防止できるので、上記のような構成にすることによ
り、曲げ荷重に対しても強い絶縁操作ロッドを得ること
ができる。The insulated operating rod is subjected to not only a load in the axial direction but also a load in the bending direction depending on a use condition. The axial load is borne by the thread. Since the protrusion 3a of the cap nut 3 can prevent cracking at the end of the insulating rod 1 against the load in the bending direction, the above-described configuration allows the insulating operation rod to be strong against the bending load. Obtainable.
【０００４】[0004]
【発明が解決しようとする課題】従来の絶縁操作ロッド
は以上のように構成されていた。電気機器が高電圧、高
容量化されるに伴い絶縁操作ロッドが負担する荷重も大
きくなってくる。従来のような構成においては、軸方向
の荷重に対する強度は植込ボルトのねじ部に依存してい
る。絶縁棒と植込ボルトおよび絶縁棒と袋ナットは接着
剤で固定されているが、この主目的はゆるみ止めであ
り、軸方向の強度増強としてはあまり期待できない。な
ぜなら、接着剤の硬化時の収縮や、絶縁棒と植込ボル
ト、袋ナットの熱膨張係数の違いにより温度変化を繰り
返せば接着面が剥離してくるおそれがあるからである。
特に、高信頼性を要求される電気機器に使用する場合に
は、この接着強度に期待するのは危険である。A conventional insulated operating rod has been constructed as described above. As electric devices have higher voltages and higher capacities, the load borne by the insulating operating rods has also increased. In a conventional configuration, the strength against an axial load depends on the thread of the stud. The insulating rods and studs and the insulating rods and the cap nuts are fixed with an adhesive, but their main purpose is to prevent loosening and is not expected to increase the strength in the axial direction. This is because if the temperature changes are repeated due to the contraction of the adhesive at the time of curing or the difference in the thermal expansion coefficient between the insulating rod, the stud, and the cap nut, the adhesive surface may peel off.
In particular, when used for electrical equipment that requires high reliability, it is dangerous to expect this adhesive strength.
【０００５】従って、軸方向の強度を増加するために
は、ねじ径を大きくするか、ねじ長さを長くして、噛み
合うねじ山の接触面積を大きくする必要がある。そこ
で、絶縁性能を確保しつつ強度の大きい絶縁操作ロッド
を得ようとすれば、どうしても全長が長くなるか直径が
大きくなる。従って重量も増すため、例えば遮断器の電
極開閉用として使用する場合、遮断速度が低下する。[0005] Therefore, in order to increase the strength in the axial direction, it is necessary to increase the screw diameter or increase the screw length to increase the contact area of the meshing threads. Therefore, if an attempt is made to obtain an insulating operation rod having a high strength while securing the insulation performance, the overall length becomes longer or the diameter becomes larger. Therefore, since the weight increases, for example, when it is used for opening / closing an electrode of a circuit breaker, the breaking speed decreases.
【０００６】この発明は上記のような問題点を解消する
ためになされたもので、高い強度を有する絶縁操作ロッ
ドを得ることを目的とする。[0006] The present invention has been made to solve the above problems, and has as its object to obtain an insulating operating rod having high strength.
【０００７】[0007]
【課題を解決するための手段】この発明に係わる絶縁操
作ロッドは、端部に第１のめねじを有し、その外周面に
第１のおねじを有する絶縁棒と、一端に絶縁棒の第１の
めねじに螺合する第２のおねじを有し他端に連結部をも
ち、第２のおねじと連結部との間に鍔を設けた第１の接
続金具と、筒状部の一端に底面を有し、この底面に設け
た貫通穴を第１の接続金具の連結部が貫通し、筒状部に
設けた第２のめねじを絶縁棒の第１のおねじに螺合して
底面で第１の接続金具の鍔を押圧する第２の接続金具と
で構成したものである。SUMMARY OF THE INVENTION An insulated operating rod according to the present invention has a first female screw at one end and a first male screw on the outer peripheral surface, and an insulating rod at one end. A first connection fitting having a second male screw screwed to the first female screw, having a connecting portion at the other end, and having a flange provided between the second male screw and the connecting portion; One end of the portion has a bottom surface, the connecting portion of the first connection fitting penetrates a through hole provided in the bottom surface, and the second female screw provided in the cylindrical portion is connected to the first male screw of the insulating rod. And a second connection fitting which is screwed and presses the flange of the first connection fitting at the bottom surface.
【０００８】また、中空の絶縁棒にねじ込んだ第１の接
続金具の先端部に半球形をしたカップ状シールドを設け
て、このカップ状シールドと第１の接続金具を電気的に
接続して構成する。絶縁棒が中実形の場合は絶縁棒のめ
ねじ穴底部先端の形状を半球状にして、この半球状の凹
面に導電性の物質でコーティングを施しそのコーティン
グ部と第１の接続金具を電気的に接続する。Further, a hemispherical cup-shaped shield is provided at the tip of the first connection fitting screwed into the hollow insulating rod, and the cup-shaped shield and the first connection fitting are electrically connected. I do. If the insulating rod is a solid type, the shape of the bottom end of the female thread hole of the insulating rod is made hemispherical, and the hemispherical concave surface is coated with a conductive substance, and the coated part and the first connection fitting are electrically connected. Connection.
【０００９】また、第１の接続金具は、一端に設けた第
２の筒状部の外周面に絶縁棒の第１のめねじと螺合する
第２のおねじを有し、第２の筒状部の一端から少なくと
も第２のおねじのねじ３山分の長さの第２の筒状部を絶
縁棒の剛性と同程度になる厚さにし、第２のおねじの他
の部分の第２の筒状部を絶縁棒の剛性より高くなる厚さ
にしたものである。The first connection fitting has a second external thread on the outer peripheral surface of the second cylindrical portion provided at one end thereof, the second external thread being screwed with the first internal thread of the insulating rod. A second cylindrical portion having a length equivalent to at least three threads of the second male screw from one end of the cylindrical portion is formed to a thickness substantially equal to the rigidity of the insulating rod, and the other portion of the second male screw is formed. The thickness of the second cylindrical portion is higher than the rigidity of the insulating rod.
【００１０】また、一端に第１の接続金具の連結部が貫
通する貫通穴を有し、他端の第３の筒状部の内周面の第
２のめねじが絶縁棒の第１のおねじと螺合して、一端の
底面で第１の接続金具の鍔を押圧する第２の接続金具を
備えたものである。そして、第２の接続金具の第３の筒
状部の端部から少なくとも第２のめねじのねじ３山分の
長さの第３の筒状部を絶縁棒の剛性と同程度になる厚さ
にし、第２のめねじの他の部分を絶縁棒の剛性より高く
なる厚さにしたものである。[0010] Further, a through hole through which a connecting portion of the first connection fitting penetrates is provided at one end, and a second female screw on the inner peripheral surface of the third cylindrical portion at the other end is provided with the first female thread of the insulating rod. There is provided a second connection fitting which is screwed with the male screw and presses the flange of the first connection fitting at the bottom surface at one end. Then, the third cylindrical portion having a length of at least three threads of the second female screw from the end of the third cylindrical portion of the second connection fitting has a thickness that is substantially equal to the rigidity of the insulating rod. The other portion of the second female screw has a thickness higher than the rigidity of the insulating rod.
【００１１】また、第１の接続金具は、一端に設けた第
２の筒状部の外周面に絶縁棒の第１のめねじと螺合する
第２のおねじを有し、第２の筒状部の一端から少なくと
も第２のおねじのねじ３山分の長さまでの所に第２の筒
状部の剛性が絶縁棒の剛性より低くなる第２の筒状部の
厚さにした第１の点を設定し、第２のおねじのねじ３山
分以上の長さの所に第２の筒状部の剛性が絶縁棒の剛性
より高くなる第２の筒状部の厚さにした第２の点を設定
し、第２の筒状部の内面を第１の点と第２の点とを結ん
だテーパ状に形成したものである。The first connection fitting has a second external thread on the outer peripheral surface of the second cylindrical portion provided at one end thereof, the second external thread being screwed with the first female thread of the insulating rod. The thickness of the second cylindrical portion is set so that the rigidity of the second cylindrical portion is lower than the rigidity of the insulating rod at least from one end of the cylindrical portion to the length of three threads of the second external thread. The first point is set, and the thickness of the second cylindrical portion at which the rigidity of the second cylindrical portion is higher than the rigidity of the insulating rod at a position at least three threads of the second external thread is set. A second point is set, and the inner surface of the second cylindrical portion is formed in a tapered shape connecting the first point and the second point.
【００１２】また、第２の接続金具の一端の第３の筒状
部の底面に第１の接続金具の連結部が貫通する貫通穴を
有し、他端の第３の筒状部の内周面の第２のめねじが絶
縁棒の第１のおねじと螺合して、一端の底面で第１の接
続金具の鍔を押圧するようにしたものである。そして、
第２の接続金具の第３の筒状部の端部から少なくとも第
２のめねじのねじ３山分の長さまでの所に第３の筒状部
の剛性が絶縁棒の剛性より低くなる第３の筒状部の厚さ
にした第１の点を設定し、第２のめねじのねじ３山分以
上の長さの所に第３の筒状部の剛性が絶縁棒の剛性より
高くなる第３の筒状部の厚さにした第２の点を設定し、
第２の接続金具の外周面を第１の点と第２の点とを結ん
だテーパ状に形成したものである。Further, a through-hole through which a connecting portion of the first connection fitting penetrates is provided on the bottom surface of the third cylindrical portion at one end of the second connection fitting, and the inside of the third cylindrical portion at the other end is provided. The second female screw on the peripheral surface is screwed with the first male screw of the insulating rod to press the flange of the first connection fitting at the bottom surface of one end. And
The rigidity of the third cylindrical portion is lower than the rigidity of the insulating rod at a position from the end of the third cylindrical portion of the second fitting to at least the length of three threads of the second female screw. A first point having the thickness of the cylindrical portion of No. 3 is set, and the rigidity of the third cylindrical portion is higher than the rigidity of the insulating rod at a length of three threads or more of the second female screw. A second point, which is the thickness of the third cylindrical portion,
The outer peripheral surface of the second connection fitting is formed in a tapered shape connecting the first point and the second point.
【００１３】また、第１の接続金具の第２の筒状部の一
端から少なくとも第２のおねじのねじ３山分の長さを越
える所まで第２の筒状部の一端から他端の方向に向かっ
てスリットを設けたものである。Further, from one end of the second cylindrical portion of the first fitting to at least a portion exceeding three threads of the second external thread, one end of the second cylindrical portion to the other end thereof. A slit is provided in the direction.
【００１４】また、第２の接続金具の第３の筒状部の端
部から少なくとも第２のめねじのねじ３山分の長さを越
える所までスリットを設けたものである。Further, a slit is provided from the end of the third cylindrical portion of the second connection fitting to at least a portion which exceeds the length of three threads of the second female screw.
【００１５】また、第１の接続金具は、第２の筒状部を
構成した第１の筒体の一端の外周面に絶縁棒の第１のめ
ねじと螺合する第２のおねじを有し、第１の筒体の一端
に少なくとも第２のおねじのねじ３山が形成された第１
の筒体より弾性係数が小さい材料からなる第２の筒体を
固着したものである。The first connection fitting has a second external thread screwed to the first internal thread of the insulating rod on the outer peripheral surface of one end of the first cylindrical body constituting the second cylindrical portion. A first cylindrical body having at least three threads of a second external thread formed at one end of the first cylindrical body;
And a second cylinder made of a material having a smaller elastic coefficient than that of the first cylinder.
【００１６】また、第２の接続金具は、第３の筒状部を
構成した第１の筒体の一端に設けた底面に貫通穴を有
し、貫通穴を第１の接続金具の連結部が貫通し、第１の
筒体の内周面に設けた第２のめねじが絶縁棒の第１のお
ねじと螺合して底面で第１の接続金具の鍔を押圧し、第
１の筒体の他端に少なくとも第２のめねじのねじ３山が
形成された第１の筒体より弾性係数が小さい材料からな
る第２の筒体を固着したものである。Further, the second connection fitting has a through hole in a bottom surface provided at one end of the first cylindrical body constituting the third cylindrical portion, and the through hole is connected to the connecting portion of the first connection fitting. Penetrates, and the second female screw provided on the inner peripheral surface of the first cylindrical body is screwed with the first male screw of the insulating rod to press the flange of the first connection fitting at the bottom surface, and A second cylindrical body made of a material having a smaller elastic coefficient than the first cylindrical body in which at least three threads of the second female screw are formed is fixed to the other end of the cylindrical body.
【００１７】また、第１の接続金具は、一端に設けた第
２の筒状部の外周面に絶縁棒の第１のめねじと螺合する
第２のおねじを有し、他端に設けた連結部と第２のおね
じとの間に絶縁棒の端面に絶縁棒の内周面からほぼ半分
の厚さの所まで当接する鍔を有するものである。さら
に、第２の接続金具は、第３の筒状部の一端に設けた底
面に貫通穴を有し、貫通穴を第１の接続金具の連結部が
貫通し、第３の筒状部の内周面に設けた第２のめねじが
絶縁棒の第１のおねじと螺合して底面の第１の当接部で
第１の接続金具を押圧するとともに、底面の第２の当接
部が絶縁棒の端面に絶縁棒の外周面からほぼ半分の厚さ
の所まで当接するようにしたものである。The first connection fitting has a second external thread on the outer peripheral surface of the second cylindrical portion provided at one end thereof, the second external thread being screwed with the first female thread of the insulating rod. A flange is provided between the provided connecting portion and the second male screw, the flange being in contact with the end surface of the insulating rod from the inner peripheral surface of the insulating rod to a location approximately half the thickness. Furthermore, the second connection fitting has a through hole in the bottom surface provided at one end of the third tubular part, and the connection part of the first connection fitting penetrates the through hole, and the third tubular part has a through hole. A second female screw provided on the inner peripheral surface is screwed with the first male screw of the insulating rod to press the first connection fitting at the first contact portion on the bottom surface, and to press the second fitting on the bottom surface. The contact portion comes into contact with the end face of the insulating rod up to a location approximately half the thickness from the outer peripheral surface of the insulating rod.
【００１８】また、第２の接続金具は、第３の筒状部の
一端に設けた底面に貫通穴を有し、貫通穴を第１の接続
金具の連結部が貫通し、第３の筒状部の内周面に設けた
第２のめねじが絶縁棒の第１のおねじと螺合して底面で
第１の接続金具の鍔を押圧し、第１の接続金具より弾性
係数が高い材料で構成されているものである。Further, the second connection fitting has a through hole in the bottom surface provided at one end of the third cylindrical part, and the connection part of the first connection fitting penetrates the through hole, and the third cylinder has a third cylindrical part. A second female screw provided on the inner peripheral surface of the shaped part is screwed with the first male screw of the insulating rod and presses the flange of the first connection fitting on the bottom surface, so that the elastic coefficient is higher than that of the first connection fitting. It is made of high material.
【００１９】また、第１の接続金具の鍔と第２の接続金
具の底面とを固定手段で機械的に固定したものである。Also, the flange of the first connection fitting and the bottom surface of the second connection fitting are mechanically fixed by fixing means.
【００２０】また、絶縁棒の第１のおねじと第２の接続
金具の第２のめねじのねじ込み深さと、絶縁棒の第１の
めねじと第１の接続金具の第２のおねじのねじ込み深さ
とが異なるようにしたものである。Further, the screw-in depth of the first male screw of the insulating rod and the second female screw of the second connection fitting, and the first female screw of the insulating rod and the second male screw of the first connection fitting are provided. Is different from the screwing depth.
【００２１】さらに、第１の接続金具の第２の筒状部の
一端から少なくとも第２のおねじのねじ３山分を越えた
第２の筒状部の内周面に、凸曲面状の頭部を有するシー
ルド体を頭部が第１の接続金具の端部から突出するよう
に取り付けたものである。Further, a convex curved surface is formed on the inner peripheral surface of the second cylindrical portion which exceeds at least three threads of the second external thread from one end of the second cylindrical portion of the first connection fitting. A shield body having a head is attached so that the head projects from an end of the first connection fitting.
【００２２】[0022]
【作用】この発明における絶縁操作ロッドは、絶縁棒の
第１のめねじと第１の接続金具の第２のおねじとを螺合
し、絶縁棒の第１のおねじと第２の接続金具の第２のめ
ねじとを螺合し、第２の接続金具の底面で第１の接続金
具の鍔を押圧するようにしたので、絶縁棒の軸方向に加
わった荷重を絶縁棒の第１のめねじと第１の接続金具の
第２のおねじとの間、および絶縁棒の第１のおねじと第
２の接続金具の第２のめねじとの間で負担する。The insulating operating rod according to the present invention includes a first female screw of the insulating rod and a second male screw of the first connection fitting, and the first male screw of the insulating rod is connected to the second male screw of the insulating rod. The second female screw of the metal fitting is screwed together, and the flange of the first metal fitting is pressed on the bottom surface of the second metal fitting. The load is applied between the first female screw and the second male screw of the first fitting, and between the first male screw of the insulating rod and the second female thread of the second fitting.
【００２３】また、第１の接続金具の第２の筒状部の一
端から少なくとも第２のおねじのねじ３山分の長さの第
２の筒状部を絶縁棒の剛性と同程度になる厚さにしたの
で、ねじ部の荷重分担率のばらつきが小さくなる。Further, a second cylindrical portion having a length of at least three threads of the second external thread from one end of the second cylindrical portion of the first connection fitting is set to be substantially the same as the rigidity of the insulating rod. Since the thickness is set to be as small as possible, the variation in the load sharing ratio of the screw portion is reduced.
【００２４】また、第２の接続金具の第３の筒状部の他
端から少なくとも第２のめねじのねじ３山分の長さの第
３の筒状部を絶縁棒の剛性と同程度になる厚さにしたの
で、ねじ部の荷重分担率のばらつきが小さくなる。The third cylindrical portion having a length of at least three threads of the second female thread from the other end of the third cylindrical portion of the second connection fitting is substantially equal to the rigidity of the insulating rod. , The variation in the load sharing ratio of the screw portion is reduced.
【００２５】また、第１の接続金具の第２の筒状部の一
端から少なくとも第２のおねじのねじ３山分の長さまで
の所に第２の筒状部の剛性が絶縁棒の剛性より低くなる
第２の筒状部の厚さにした第１の点を設定し、第２のお
ねじのねじ３山分以上の長さの所に第２の筒状部の剛性
が絶縁棒の剛性より高くなる第２の筒状部の厚さにした
第２の点を設定し、第２の筒状部の内面を第１の点と第
２の点とを結んだテーパ状にしたので、ねじ部の荷重分
担率のばらつきが小さくなる。Further, the rigidity of the second cylindrical portion is from the one end of the second cylindrical portion of the first connection fitting to at least three threads of the second external thread, and the rigidity of the insulating rod is A first point having a lower thickness of the second cylindrical portion is set, and the rigidity of the second cylindrical portion is set to be equal to or more than three threads of the second external thread. A second point having a thickness of the second cylindrical portion that is higher than the rigidity of the second cylindrical portion is set, and the inner surface of the second cylindrical portion has a tapered shape connecting the first point and the second point. Therefore, the variation in the load sharing ratio of the screw portion is reduced.
【００２６】また、第２の接続金具の第３の筒状部の外
周面をテーパ状にしたので、ねじ部の荷重分担率が小さ
くなる。Further, since the outer peripheral surface of the third cylindrical portion of the second connection fitting is tapered, the load sharing ratio of the screw portion is reduced.
【００２７】また、第１の接続金具の第２の筒状部の一
端から少なくとも第２のおねじのねじ３山分の長さを越
える所まで第２の筒状部の一端から他端に向かってスリ
ットを設けたので、ねじ部の荷重分担率のばらつきが小
さくなる。Also, from one end of the second cylindrical portion of the first connection fitting to one end of the second cylindrical portion to at least a portion exceeding the length of three threads of the second external thread, from the one end of the second cylindrical portion to the other end. Since the slits are provided, the variation in the load sharing ratio of the screw portion is reduced.
【００２８】また、第２の接続金具の第３の筒状部の他
端から少なくとも第２のめねじのねじ３山分の長さを越
える所まで第３の筒状部の他端から一端の方向に向かっ
てスリットを設けたので、ねじ部の荷重分担率のばらつ
きが小さくなる。Also, from the other end of the third cylindrical portion of the second connection fitting to one end from the other end of the third cylindrical portion to at least a portion exceeding the length of three threads of the second female screw. , The variation in the load sharing ratio of the threaded portion is reduced.
【００２９】また、第１の接続金具の第２の筒状部を絶
縁棒の第１のめねじと螺合する第２のおねじが一端に形
成された第１の筒体と、この第１の筒体の一端に固着さ
れ、少なくとも第２のおねじのねじ３山が形成された第
１の筒体より弾性係数が小さい材料からなる第２の筒体
とで構成したので、ねじ部の荷重分担率のばらつきが小
さくなる。Also, a first cylindrical body having at one end a second male screw for screwing the second cylindrical portion of the first connection fitting with the first female screw of the insulating rod; The first cylindrical body is fixed to one end of the first cylindrical body and is formed of a material having a smaller elastic coefficient than the first cylindrical body in which at least three threads of the second external thread are formed. Of the load sharing ratio of the above becomes small.
【００３０】また、第２の接続金具の第３の筒状部を、
一端に第１の接続金具の連結部が貫通する貫通穴を有し
内周面に絶縁棒の第１のおねじと螺合する第２のめねじ
が形成された第１の筒体と、この第１の筒体に固着され
た第１の筒体より弾性係数が小さい材料からなる第２の
筒体とで構成し、第２の筒体に端部から少なくとも第２
のめねじのねじ３山を形成したので、ねじ部の荷重分担
率のばらつきが小さくなる。Further, the third tubular portion of the second connection fitting is
A first cylindrical body having a through hole at one end through which a connection portion of the first connection fitting penetrates, and a second female screw formed on an inner peripheral surface thereof to be screwed with the first male screw of the insulating rod; A second cylinder made of a material having a smaller elastic coefficient than the first cylinder fixed to the first cylinder, and at least a second cylinder from the end to the second cylinder.
Since the three threads of the female screw are formed, the variation in the load sharing ratio of the screw portion is reduced.
【００３１】また、第１の接続金具の鍔と第２の接続金
具の底面とが絶縁棒の端面の厚さのほぼ半分にそれぞれ
が当接するようにしたので、絶縁棒から各接続金具に伝
達される荷重分担率のばらつきが小さくなる。Since the flange of the first connection fitting and the bottom surface of the second connection fitting abut each other to substantially half the thickness of the end face of the insulating rod, the transmission from the insulating rod to each connecting fitting is performed. Of the applied load sharing ratio is reduced.
【００３２】また、第２の接続金具の第３の筒状部を第
１の接続金具の第２の筒状部より弾性係数の高い材料で
構成したので、第２の接続金具の曲げ変形を抑制でき
る。このため、各接続金具に伝達される荷重分担率のば
らつきが小さくなる。Further, since the third cylindrical portion of the second connecting member is made of a material having a higher elastic coefficient than the second cylindrical portion of the first connecting member, bending deformation of the second connecting member can be prevented. Can be suppressed. For this reason, the variation in the load sharing ratio transmitted to each connection fitting is reduced.
【００３３】また、第１の接続金具の鍔と第２の接続金
具の底面とを固定手段で固定したので、底面の厚みが底
面と鍔とを合成した板厚と同程度の曲げ剛性となる。こ
のため、第２の接続金具の底面の曲げ変形を抑制するの
で、各接続金具の荷重分担率のばらつきが小さくなる。Further, since the flange of the first connection fitting and the bottom surface of the second connection fitting are fixed by the fixing means, the thickness of the bottom surface has a bending rigidity substantially equal to the combined thickness of the bottom surface and the flange. . For this reason, since the bending deformation of the bottom surface of the second connection fitting is suppressed, the variation in the load sharing ratio of each connection fitting is reduced.
【００３４】また、絶縁棒の第１のおねじと第２の接続
金具の第２のめねじとのねじ込み深さと、絶縁棒の第１
のめねじと第１の接続金具の第２のおねじとのねじ込み
深さとが異なるようにしたので、両接続金具と絶縁棒と
の間の応力集中位置を分散させる。[0034] The screwing depth of the first male screw of the insulating rod and the second female screw of the second connection fitting, and the first thread of the insulating rod.
Since the female screw and the second male screw of the first connection fitting have different screwing depths, the stress concentration positions between both connection fittings and the insulating rod are dispersed.
【００３５】[0035]
実施例１．以下、この発明の一実施例を図について説明
する。図１は本実施例の断面図である。図において、４
は絶縁棒で、例えばガラス繊維に熱硬化性の樹脂を含浸
させ円筒状に成形したものであり、両端部の内周面にめ
ねじ４ａを、その外周面にはおねじ４ｂを設けてある。
５、６は接続金具で、図示左側の接続金具５は、一端に
絶縁棒４のめねじ４ａと螺合するおねじ５ａを設けてそ
の端部を半球状に形成し、他端は連結部５ｂをもち、そ
れらの間には絶縁棒４に当接する鍔５ｃを設けている。Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of this embodiment. In the figure, 4
Is an insulating rod formed by impregnating a thermosetting resin into glass fiber and molding it into a cylindrical shape, for example. A female screw 4a is provided on the inner peripheral surface at both ends, and a male screw 4b is provided on the outer peripheral surface.
Reference numerals 5 and 6 denote connecting fittings. The connecting fitting 5 on the left side in the figure has a male screw 5a screwed into the female screw 4a of the insulating rod 4 at one end to form a hemispherical end, and the other end has a connecting part. 5b, and a flange 5c for contacting the insulating rod 4 is provided between them.
【００３６】図示右側の接続金具６は絶縁棒４に螺合し
たおねじ６ａと絶縁棒４の端面に当接した鍔６ｂと軸心
にめねじ６ｃを有し、めねじ６ｃに連結体７が取り付け
られている。８は筒状部８ａの一端の底面８ｂに貫通穴
８ｃを有する接続金具で、筒状部８ａの内周面にめねじ
８ｄが形成されている。なお、接続金具８は、めねじ８
ｄが絶縁棒４のおねじ４ｂに螺合されて接続金具５、６
の鍔５ｃ、６ｂを押圧している。９は連結体７のゆるみ
止め用のナットである。The connection fitting 6 on the right side of the drawing has a male screw 6a screwed to the insulating rod 4, a flange 6b abutting on the end face of the insulating rod 4, and a female screw 6c at the axis. Is attached. Reference numeral 8 denotes a connection fitting having a through hole 8c in a bottom surface 8b at one end of the cylindrical portion 8a, and a female screw 8d is formed on an inner peripheral surface of the cylindrical portion 8a. The connection fitting 8 is a female screw 8
d is screwed into the external thread 4b of the insulating rod 4, and the connection fittings 5, 6
Are pressed against the flanges 5c and 6b. Reference numeral 9 denotes a nut for preventing the coupling body 7 from being loosened.
【００３７】上記構成において、接続金具５、６は同様
の作用なので接続金具５の側の記号で説明する。絶縁棒
４と接続金具５は、めねじ４ａとおねじ５ａによって接
続し、絶縁棒４と接続金具８はおねじ４ｂとめねじ８ｄ
によって接続している。そして、接続金具８の底面８ｂ
で接続金具５の鍔５ｃを押圧しているので、絶縁操作ロ
ッドに軸方向の引張り荷重が加わった場合、荷重は接続
金具５及び接続金具８のそれぞれの接続部で分担され
る。In the above configuration, since the connection fittings 5 and 6 have the same operation, the description will be made using the symbols on the connection fitting 5 side. The insulating rod 4 and the connection fitting 5 are connected by a female screw 4a and a male screw 5a, and the insulating rod 4 and the connection fitting 8 are connected by a male screw 4b and a female screw 8d.
Connected by Then, the bottom surface 8b of the connection fitting 8
Presses the flange 5c of the connection fitting 5, so that when an axial tensile load is applied to the insulating operation rod, the load is shared by the respective connection portions of the connection fitting 5 and the connection fitting 8.
【００３８】つまり、絶縁棒４の両端に施されためねじ
４ａとおねじ４ｂが共に軸方向の荷重に対して有効に働
くので、結合部のねじ長さを従来の絶縁操作ロッドと同
一とした場合、絶縁棒４の各ねじ部に加わる荷重は約半
分となり、絶縁操作ロッドの軸方向の引張り荷重に対す
る強度上の弱点部であるねじ部の強度は大きく改善され
る。従って、本発明を適用することによってねじ部の長
さを長くすることなく（絶縁操作ロッドの全長を増すこ
となく）従来と同一のねじ長さで軸方向の強度は約２倍
に向上する。That is, since the screw 4a and the male screw 4b are effectively applied to the load in the axial direction because they are applied to both ends of the insulating rod 4, the screw length of the joint is the same as that of the conventional insulated operating rod. In addition, the load applied to each thread portion of the insulating rod 4 is reduced to about half, and the strength of the thread portion, which is a weak point in strength against the tensile load in the axial direction of the insulating operation rod, is greatly improved. Therefore, by applying the present invention, the axial strength is increased about twice with the same screw length as before without increasing the length of the screw portion (without increasing the overall length of the insulating operation rod).
【００３９】本実施例では、接続金具５、６の絶縁棒４
側の先端部をほぼ半球状に形成しているので、これによ
り絶縁操作ロッドの両端に電圧が加わった場合の接続金
具５、６の先端の電界強度を低減することができるた
め、絶縁操作ロッドの軸方向寸法をさらに小さくするこ
とが可能になる。In this embodiment, the insulating rods 4 of the connection fittings 5 and 6 are used.
Is formed in a substantially hemispherical shape, thereby reducing the electric field strength at the ends of the connection fittings 5 and 6 when a voltage is applied to both ends of the insulated operating rod. Can be further reduced in the axial direction.
【００４０】また、絶縁操作ロッドを図１のように組み
立てた状態で、接続金具５、６のおねじ先端位置（矢印
Ａ部）と、接続金具８のめねじ先端位置（矢印Ｂ部）が
ずれるように、それぞれのねじ長さを決めてある。絶縁
物４に荷重が加わった場合ねじ先端位置に応力が集中す
るので、これらのねじ先端位置を同一とした場合、おね
じとめねじの応力集中位置が重なり、ねじ部のせん断強
度は問題なくとも絶縁棒の破断に至る場合がある。そこ
で図のような構成とすることにより応力集中部を分散さ
せることができ、応力集中による強度低下を回避でき
る。In the state where the insulating operation rod is assembled as shown in FIG. 1, the positions of the tips of the external threads of the connection fittings 5 and 6 (part A) and the positions of the tips of the internal threads of the connection fitting 8 (part B) are shown. The length of each screw is determined so as to be shifted. When a load is applied to the insulator 4, stress concentrates at the screw tip position. Therefore, when the screw tip positions are the same, the stress concentration positions of the male screw and the female screw overlap, and the shear strength of the screw portion is not problematic. The insulation rod may be broken. Therefore, by adopting a configuration as shown in the figure, the stress concentration portions can be dispersed, and a decrease in strength due to stress concentration can be avoided.
【００４１】また、本実施例では、絶縁棒４の直径は両
端のねじ部より中央部のほうを小さくしてある。直径が
同じ場合は、ねじ部は前述の応力集中があること及びね
じ加工のため実質的に直径が小さくなっていることから
中央部より強度が弱いので、強度のバランスを考慮しな
がら少しでも重量を軽減するため中央部の直径を細くし
たものである。In this embodiment, the diameter of the insulating rod 4 is smaller at the center portion than at the threaded portions at both ends. If the diameter is the same, the thread is weaker than the center because the thread has the above-mentioned stress concentration and is substantially smaller in diameter due to threading. The diameter of the central part is reduced to reduce the diameter.
【００４２】また、本実施例では、接続金具６にはねじ
棒７を植込んでいるが、これは絶縁操作ロッド全長を可
変とし、機器に組み立て時の作業性の向上を図ったもの
である。寸法調整の必要がなければ接続金具６は左側の
接続金具５と同形状でよい。In this embodiment, the connecting rod 6 is provided with the threaded rod 7 implanted therein. The length of the insulating rod is made variable to improve the workability when assembling the apparatus. . If there is no need for dimensional adjustment, the connection fitting 6 may have the same shape as the left connection fitting 5.
【００４３】実施例２．図２は他の実施例を示す断面図
である。図において、１０は端部にめねじ１０ａ及びお
ねじ１０ｂが形成された絶縁棒で、後述のシールド１２
の係止部１０ｃが設けられている。１１は接続金具で、
一端の筒状部１１ａの外周面におねじ１１ｂが形成さ
れ、鍔１１ｃを挟んで他端に連結部１１ｄが設けられて
いる。なお、接続金具１１のおねじ１１ｂが絶縁棒１０
のめねじ１０ａに螺合され、鍔１１ｃが絶縁棒１０の端
面に当接している。Embodiment 2 FIG. FIG. 2 is a sectional view showing another embodiment. In the figure, reference numeral 10 denotes an insulating rod having a female thread 10a and a male thread 10b formed at its ends.
Is provided. 11 is a connection fitting.
A screw 11b is formed on the outer peripheral surface of the cylindrical portion 11a at one end, and a connecting portion 11d is provided at the other end with the flange 11c interposed therebetween. Note that the external thread 11b of the connection fitting 11 is
The collar 11c is screwed into the female screw 10a, and the flange 11c is in contact with the end face of the insulating rod 10.
【００４４】１２は半球状をした金属製のカップ状のシ
ールドで、絶縁棒１０の係止部１０ｃに係止されてい
る。１３は接続金具１１の筒状部１１ａ内に配設した金
属製のコイルばねで、シールド１２を押圧するとともに
接続金具１１とシールド１２とを電気的に接続してい
る。なお、接続金具１１の鍔１１ｃは絶縁棒１０のおね
じ１０ｂに螺合された接続金具８の底面８ｂで押圧され
ている。Reference numeral 12 denotes a hemispherical metal cup-shaped shield which is locked to a locking portion 10c of the insulating rod 10. Reference numeral 13 denotes a metal coil spring disposed in the cylindrical portion 11a of the connection fitting 11, which presses the shield 12 and electrically connects the connection fitting 11 and the shield 12. The flange 11c of the connection fitting 11 is pressed by the bottom surface 8b of the connection fitting 8 screwed to the male thread 10b of the insulating rod 10.
【００４５】以上のように構成した本実施例によれば、
機械的、電気的には実施例１と同様の効果を発揮し、さ
らに接続金具１１の先端部の機械的強度に関係のない部
分を削除したことにより、実施例１に比べ重量を軽減す
ることができる。According to the present embodiment configured as described above,
Mechanically and electrically, the same effect as in the first embodiment is exhibited, and furthermore, a portion not related to the mechanical strength of the distal end portion of the connection fitting 11 is removed to reduce the weight compared to the first embodiment. Can be.
【００４６】実施例３．図３（ａ）は本発明の他の実施
例を示す断面図、図３（ｂ）は図３（ａ）のＩＩＩ−Ｉ
ＩＩ線の断面図である。１４は中実形の絶縁棒で、例え
ばガラス繊維に熱硬化性の樹脂を含浸させ硬化させた積
層板を加工したものである。実施例１と同じように、両
端部にめねじ１４ａとおねじ１４ｂを設けてある。１５
は接続金具で、絶縁棒１４のめねじ１４ａと螺合するお
ねじ１５ａには長手方向に溝１５ｂが設けてある。Embodiment 3 FIG. FIG. 3A is a sectional view showing another embodiment of the present invention, and FIG. 3B is a sectional view taken along the line III-I of FIG.
It is sectional drawing of the II line. Reference numeral 14 denotes a solid insulating rod, which is obtained by processing a laminated board obtained by impregnating glass fiber with a thermosetting resin and curing the resin. As in the first embodiment, a female screw 14a and a male screw 14b are provided at both ends. Fifteen
Is a connection fitting, and a groove 15b is provided in a longitudinal direction on a male screw 15a screwed with the female screw 14a of the insulating rod 14.
【００４７】１６はスペーサで、内径はおねじ１５ａよ
り大きくし、外径は絶縁棒１４のおねじ１４ｂより小さ
くしてある。そして絶縁棒１４と接する側に、内径から
外径に至る溝１６ａが設けてある。溝１５ｂと溝１６ａ
および絶縁棒１４のめねじ１４ａの底部の空間は、絶縁
棒１４と接続金具１５を図のように組立た状態で、外部
の空間と連通する構造となっている。１５ｃは連結部で
ある。１７は誘電率が１を上回る絶縁物で、めねじ１４
ａの底部の空間に充墳している。A spacer 16 has an inner diameter larger than the external thread 15a and an outer diameter smaller than the external thread 14b of the insulating rod 14. A groove 16a extending from the inner diameter to the outer diameter is provided on the side in contact with the insulating rod 14. Groove 15b and groove 16a
The space at the bottom of the female screw 14a of the insulating rod 14 has a structure communicating with an external space when the insulating rod 14 and the connection fitting 15 are assembled as shown in the figure. 15c is a connection part. Reference numeral 17 denotes an insulator having a dielectric constant of more than 1;
Filled in the space at the bottom of a.
【００４８】組立方法は、まず液状をした絶縁物１７を
絶縁棒１４のめねじ１４ａの先端部に注入し、次にスペ
ーサ１６を溝１６ａが絶縁棒１４側になるように挟ん
で、接続金具１５をねじ込む。このとき余分な絶縁物は
接続金具１５の溝１５ｂとスペーサ１６の溝１６ａを通
って外部に流出する。その後、加熱または常温環境下
で、注入した絶縁物１７を硬化させた後、接続金具８を
絶縁棒１４に締めつける。The assembling method is as follows. First, a liquid insulator 17 is injected into the distal end of the female screw 14a of the insulating rod 14, and then the spacer 16 is sandwiched so that the groove 16a is on the insulating rod 14 side. Screw 15 in. At this time, the excess insulator flows out through the groove 15b of the connection fitting 15 and the groove 16a of the spacer 16. Then, after the injected insulator 17 is cured in a heating or normal temperature environment, the connection fitting 8 is fastened to the insulating rod 14.
【００４９】本実施例も、絶縁操作ロッドに加わる引張
り荷重が両接続金具８、１５で分担されるため、従来例
に比べ、ねじ接合部のねじ長さを増すことなく強度向上
を図ることができる。また、接続金具１５の絶縁棒１４
側の先端部を半球状としているので、電界強度を低減さ
せることができ、実施例１と同様に絶縁操作ロッドの軸
方向の寸法の縮小化が図れる。Also in this embodiment, since the tensile load applied to the insulated operation rod is shared between the two connection fittings 8 and 15, the strength can be improved without increasing the screw length of the screw joint as compared with the conventional example. it can. Also, the insulating rod 14 of the connection fitting 15
Since the tip on the side is hemispherical, the electric field intensity can be reduced, and the axial dimension of the insulating operation rod can be reduced as in the first embodiment.
【００５０】さらに、絶縁棒１４のめねじ１４ａの先端
部の空間を誘電率が１を上回る絶縁物１７で充たすこと
によって、接続金具１５の先端部の電界強度が低減され
るため、絶縁操作ロッドの軸方向長さをよりいっそう縮
小化することができる。Further, by filling the space at the end of the internal thread 14a of the insulating rod 14 with the insulator 17 having a dielectric constant of more than 1, the electric field strength at the end of the connection fitting 15 is reduced. Can be further reduced in the axial direction.
【００５１】実施例４．図４は更に他の実施例を示す断
面図である。上記実施例３と比べ、本実施例では接続金
具１８のおねじ１８ａの先端部は平面状としている。１
８ｂは連結部である。絶縁棒１９のめねじ１９ａの底部
先端を半球状とし、その凹部に導電性コーティング２０
を施したものである。２１は金属のコイルばねで、接続
金具１８と導電性コーティング２０を電気的に接続して
いる。それ以外は、実施例３と同様である。Embodiment 4 FIG. FIG. 4 is a sectional view showing still another embodiment. In this embodiment, the tip of the external thread 18a of the connection fitting 18 is flat compared to the third embodiment. 1
8b is a connecting part. The bottom end of the female screw 19a of the insulating rod 19 has a hemispherical shape, and a conductive coating 20
It has been subjected to. Reference numeral 21 denotes a metal coil spring, which electrically connects the connection fitting 18 and the conductive coating 20. Other than that is the same as the third embodiment.
【００５２】本実施例によれば、機械的、電気的に実施
例３と同様の効果が得られると同時に接続金具１８の加
工が容易となり、また軽量化できる。According to the present embodiment, the same effects as in the third embodiment can be obtained mechanically and electrically, and at the same time, the processing of the connection fitting 18 is facilitated and the weight can be reduced.
【００５３】実施例５．図５は他の実施例を示す断面図
である。図において、２２は端部の筒状部２２ａの内周
面にめねじ２２ｂを、外周面におねじ２２ｃを形成した
円筒状の絶縁棒で、例えば、ガラス繊維に熱硬化性樹脂
を含浸させて成形したものである。２３は接続金具で、
外周面におねじ２３ａが形成された一端側の筒状部２３
ｂと、他端側の連結部２３ｃと、筒状部２３ｂと連結部
２３ｃとの間に設けた鍔２３ｄとからなっている。Embodiment 5 FIG. FIG. 5 is a sectional view showing another embodiment. In the figure, reference numeral 22 denotes a cylindrical insulating rod in which a female screw 22b is formed on an inner peripheral surface of a cylindrical portion 22a at an end and a screw 22c is formed on an outer peripheral surface. For example, glass fiber is impregnated with a thermosetting resin. Molded. 23 is a connection fitting.
One end side cylindrical portion 23 having a screw 23a formed on the outer peripheral surface
b, a connecting portion 23c on the other end side, and a flange 23d provided between the tubular portion 23b and the connecting portion 23c.
【００５４】なお、鍔２３ｄは、おねじ２３ａが絶縁棒
２２のめねじ２２ｂに螺合されたとき、絶縁棒２２の内
周面から端面の厚みのほぼ中央部まで当接部２３ｅが当
接するようにしてある。さらに、接続金具２３の筒状部
２３ｂは、一端側の端部から少なくともおねじ２３ａの
３山分の長さを絶縁棒２２の剛性と同程度になる厚さに
した薄肉部２３ｆが形成されている。When the male screw 23a is screwed into the female screw 22b of the insulating rod 22, the contact portion 23e of the flange 23d is in contact with the inner peripheral surface of the insulating rod 22 from the center of the thickness of the end surface. It is like that. Further, the cylindrical portion 23b of the connection fitting 23 is formed with a thin portion 23f in which at least three ridges of the male screw 23a from the one end side have a thickness substantially equal to the rigidity of the insulating rod 22. ing.
【００５５】２４は接続金具で、内周面にめねじ２４ａ
が形成された筒状部２４ｂと、貫通穴２４ｃを有する底
面２４ｄとからなっている。底面２４ｄは絶縁棒２２の
端面と当接する当接部２４ｅおよび接続金具２３の鍔２
３ｄと当接する当接部２４ｆが形成されている。なお、
接続金具２４のめねじ２４ａが絶縁棒２２のおねじ２２
ｃに螺合されたとき、接続金具２３の連結部２３ｂが貫
通穴２４ｃを貫通して、当接部２４ｆが接続金具２３の
鍔２３ｄを押圧し、当接部２４ｅが絶縁棒２２の端面と
当接する。Reference numeral 24 denotes a connection fitting which has a female screw 24a on its inner peripheral surface.
And a bottom surface 24d having a through hole 24c. The bottom surface 24 d has a contact portion 24 e contacting the end surface of the insulating rod 22 and the flange 2 of the connection fitting 23.
A contact portion 24f that comes into contact with 3d is formed. In addition,
The female screw 24a of the connection fitting 24 is
c, the connecting portion 23b of the connecting member 23 passes through the through hole 24c, the contact portion 24f presses the flange 23d of the connecting member 23, and the contact portion 24e contacts the end surface of the insulating rod 22. Abut
【００５６】さらに、接続金具２４の当接部２４ｅは、
めねじ２４ａが絶縁棒２２のおねじ２２ｃに螺合された
とき、絶縁棒２２の外周面から端面の厚みのほぼ中央部
まで当接する。また、接続金具２４の筒状部２４ｂは、
端部から少なくともめねじ２４ａのねじ３山分の長さを
絶縁棒２２の剛性と同程度になる厚さにした薄肉部２４
ｇが形成されている。２５は凸曲面状の頭部２５ａと取
付部２５ｂとからなるシールドで、接続金具２３の筒状
部２３ｂ内の薄肉部２３ｆより奥の方の厚肉の部分に取
り付けられている。Further, the contact portion 24e of the connection fitting 24 is
When the female screw 24 a is screwed into the male screw 22 c of the insulating rod 22, the female screw 24 a comes into contact with the outer peripheral surface of the insulating rod 22 from the center of the thickness of the end face. The cylindrical portion 24b of the connection fitting 24 is
A thin portion 24 in which at least three threads of the internal thread 24a from the end are made thick enough to be approximately the same as the rigidity of the insulating rod 22.
g is formed. Reference numeral 25 denotes a shield having a convexly curved head portion 25a and an attachment portion 25b, which is attached to a thick portion deeper than the thin portion 23f in the tubular portion 23b of the connection fitting 23.
【００５７】次に作用について説明する。絶縁棒２２と
接続金具２３とは、めねじ２２ｂとおねじ２３ａとで接
続されている。そして、絶縁棒２２と接続金具２４と
は、おねじ２２ｃとめねじ２４ａとで接続され、接続金
具２４の当接部２４ｆが接続金具２３の鍔２３ｄを押圧
している。したがって、連結部２３ｃに軸方向の引張荷
重が加わった場合、荷重は各接続金具２３、２４のそれ
ぞれの接続部で分担される。Next, the operation will be described. The insulating rod 22 and the connection fitting 23 are connected by a female screw 22b and a male screw 23a. The insulating rod 22 and the connection fitting 24 are connected by a male screw 22c and a female screw 24a, and the contact portion 24f of the connection fitting 24 presses the flange 23d of the connection fitting 23. Therefore, when an axial tensile load is applied to the connecting portion 23c, the load is shared by the connecting portions of the connecting fittings 23 and 24.
【００５８】図１の各接続金具５、８の形状を図６（図
１と同様）の説明図のようにした場合、接続金具５と接
続金具８との荷重分担は８対２程度になる。図７は引張
荷重が加わって両接続金具５、８が変形した状態を模式
的に示した説明図である。When the shapes of the connection fittings 5 and 8 in FIG. 1 are as shown in the explanatory view of FIG. 6 (similar to FIG. 1), the load sharing between the connection fittings 5 and the connection fittings 8 is about 8: 2. . FIG. 7 is an explanatory diagram schematically showing a state in which both connecting fittings 5 and 8 are deformed by applying a tensile load.
【００５９】図６において、接続金具５の鍔５ｃと接続
金具８の底面８ｂとは、接続金具８から伝達される力に
よって図７にように変形するので、接続金具８は接続金
具５と比べて小さな力で軸方向に変形する。即ち、接続
金具８は接続金具５と比べて軸方向の剛性が低くなって
いる。この曲げ変形を抑制するためには、接続金具５の
鍔５ｃと接続金具８の底面８ｂの板厚を厚くするのが効
果的である。しかし、重量が増加するという問題点があ
る。In FIG. 6, the flange 5c of the connection fitting 5 and the bottom surface 8b of the connection fitting 8 are deformed as shown in FIG. 7 by the force transmitted from the connection fitting 8, so that the connection fitting 8 is compared with the connection fitting 5. Deforms in the axial direction with a small force. That is, the connection fitting 8 has lower rigidity in the axial direction than the connection fitting 5. In order to suppress this bending deformation, it is effective to increase the thickness of the flange 5c of the connection fitting 5 and the bottom surface 8b of the connection fitting 8. However, there is a problem that the weight increases.
【００６０】曲げ変形を抑制するための対策として図８
（図５と同様）の説明図のように構成するのがよい。即
ち、接続金具２３の鍔２３ｃおよび接続金具２４の底面
２４ｄの高さを小さくする。具体的には接続金具２４の
底面２４ｄに段差を設けて、絶縁棒２２と当接する当接
部２４ｅと接続金具２３の鍔２３ｃと当接する当接部２
４ｆとを分離する。この場合、鍔２３ｃと当接部２４ｅ
の高さは、絶縁棒２２の端面の厚さのほぼ中央の位置と
するのが効果的である。FIG. 8 shows a countermeasure for suppressing bending deformation.
(Similar to FIG. 5). That is, the heights of the flange 23c of the connection fitting 23 and the bottom surface 24d of the connection fitting 24 are reduced. Specifically, a step is provided on the bottom surface 24 d of the connection fitting 24, and the contact part 24 e contacting the insulating rod 22 and the contact part 2 contacting the flange 23 c of the connection fitting 23.
4f. In this case, the flange 23c and the contact portion 24e
It is effective to set the height at a position substantially at the center of the thickness of the end face of the insulating rod 22.
【００６１】図９は図８の構成において、引張荷重が加
わったときの変形状態を模式的に示した説明図である。
図において、接続金具２３の鍔２３ｃと接続金具２４の
底面２４ｄとの変形は、図６の形状の場合と比べて非常
に小さくなる。この結果、両接続金具２３、２４の軸方
向の剛性がほぼ等しくなる。したがって、絶縁棒２２か
ら伝達される荷重は両接続金具２３、２４に均等に伝達
される。FIG. 9 is an explanatory view schematically showing a deformed state when a tensile load is applied in the configuration of FIG.
In the figure, the deformation of the flange 23c of the connection fitting 23 and the bottom surface 24d of the connection fitting 24 becomes very small as compared with the case of the shape of FIG. As a result, the rigidity in the axial direction of the two connection fittings 23 and 24 becomes substantially equal. Therefore, the load transmitted from the insulating rod 22 is transmitted equally to both the connection fittings 23 and 24.
【００６２】図１０（図２と同様）は、接続金具１１と
絶縁棒１０とのねじ部での荷重分担率を模式的に示した
説明図である。簡単にするために絶縁棒１０と接続金具
１１との間のめねじ１０ａとおねじ１１ｂとの結合にお
ける荷重分担率について説明する。FIG. 10 (similar to FIG. 2) is an explanatory diagram schematically showing the load sharing ratio at the threaded portion between the connection fitting 11 and the insulating rod 10. For the sake of simplicity, a load sharing ratio in the connection between the female screw 10a and the male screw 11b between the insulating rod 10 and the connection fitting 11 will be described.
【００６３】絶縁棒は通常ＦＲＰなどで構成されるの
で、弾性係数が低い。また、接続金具は通常アルミ合金
などで構成されるので、弾性係数が高い。そのために、
通常は接続金具の剛性が絶縁棒の剛性に比べて非常に大
きくなる。図１０においては、接続金具１１の端部まで
剛性が高いため、接続金具１１のおねじ１１ｂの端部で
荷重の伝達が急激に大きくなる。このため、ねじ部での
荷重分担は端部が非常に大きい分布形状を示す。Since the insulating rod is usually made of FRP or the like, it has a low elastic modulus. Further, since the connection fitting is usually made of an aluminum alloy or the like, it has a high elastic coefficient. for that reason,
Normally, the rigidity of the connection fitting is much higher than the rigidity of the insulating rod. In FIG. 10, since the rigidity is high up to the end of the connection fitting 11, the transmission of the load rapidly increases at the end of the external thread 11 b of the connection fitting 11. For this reason, the load distribution in the thread portion has a distribution shape with a very large end.
【００６４】図５の実施例５に示す接続金具２３の形状
におけるねじ部での荷重分布の例を図１１に示す。この
ように接続金具２３の筒状部２３ｂの一端側の端部から
少なくともおねじ２３ａの３山分の長さを絶縁棒２２の
剛性と同程度の剛性になる厚さにした薄肉部２３ｆを設
けることによって、ねじ端部で荷重の伝達が急激に大き
くなるのを抑制できる。FIG. 11 shows an example of a load distribution at the threaded portion in the shape of the connection fitting 23 shown in the fifth embodiment in FIG. In this way, the thin portion 23f in which the length of at least three ridges of the male screw 23a from the end on the one end side of the cylindrical portion 23b of the connection fitting 23 has a thickness that is substantially the same as the rigidity of the insulating rod 22 is formed. With the provision, it is possible to suppress a sudden increase in load transmission at the screw end.
【００６５】接続金具２３のアルミニウムとし、絶縁棒
２２をＦＲＰとした場合、ねじ部の端部からねじ３山の
ところまでは、他のねじ山に比べて３〜５倍の荷重を分
担する。したがって、薄肉部２３ｆを設けてねじ部の端
部の剛性を低くすることによって、ねじ部の端部の荷重
分担率を下げることができるので、ねじ部での荷重分担
のばらつきを小さくする。薄肉部２３ｆの長さは、ねじ
全長の１／２程度以上になると端部の強度が弱くなるの
で、ねじ３山分の長さからねじ全長の１／２の長さとす
るのがよい。When the connection fitting 23 is made of aluminum and the insulating rod 22 is made of FRP, the load from the end of the threaded portion to the three threads is 3 to 5 times the load of the other threads. Therefore, by providing the thin portion 23f to lower the rigidity of the end portion of the screw portion, the load sharing ratio of the end portion of the screw portion can be reduced, so that the variation in load sharing in the screw portion is reduced. When the length of the thin portion 23f is about １ ／ or more of the entire length of the screw, the strength of the end portion is weakened. Therefore, it is preferable to set the length of three threads to か ら of the entire length of the screw.
【００６６】以上のように、実施例５においては、各接
続金具２３、２４の荷重分担の差を縮めて各ねじ山の荷
重分担のばらつきも小さくしたので、効率よく荷重の伝
達ができる。したがって、絶縁操作ロッドの軸方向の引
張荷重に対する強度上の弱点となるねじ部の強度が改善
できた。As described above, in the fifth embodiment, since the difference in load sharing between the connection fittings 23 and 24 is reduced to reduce the variation in load sharing between the threads, the load can be transmitted efficiently. Therefore, the strength of the thread portion, which is a weak point in the strength of the insulating operation rod against the tensile load in the axial direction, could be improved.
【００６７】また、シールド２５は接続金具２３の筒状
部２３ｂの薄肉部２３ｆより奥の厚肉部に取り付けたの
で、ねじ部での荷重分担に影響を及ぼすことなく、所定
の電気的特性を発揮することができる。Further, since the shield 25 is attached to a thick portion deeper than the thin portion 23f of the cylindrical portion 23b of the connection fitting 23, predetermined electrical characteristics can be obtained without affecting load sharing in the screw portion. Can be demonstrated.
【００６８】実施例６．図１２は他の実施例の要部を示
す断面図である。図において、２６は接続金具で、外周
面におねじ２６ａが形成された一端側の筒状部２６ｂ
と、他端側の連結部２６ｃと、筒状部２６ｂと連結部２
６ｃとの間に設けた鍔２６ｄとからなっている。なお、
鍔２６ｄは、おねじ２６ａが絶縁棒２２のめねじ２２ｂ
に螺合されたとき、絶縁棒２２の内周面から端面の厚み
のほぼ中央部まで当接部２６ｅが当接するようにしてあ
る。Embodiment 6 FIG. FIG. 12 is a sectional view showing a main part of another embodiment. In the figure, reference numeral 26 denotes a connection fitting, and a cylindrical portion 26b on one end side having a screw 26a formed on the outer peripheral surface.
The other end of the connecting portion 26c, the cylindrical portion 26b and the connecting portion 2
6c. In addition,
The flange 26d is formed by the external thread 26a being the female thread 22b of the insulating rod 22.
When screwed in, the contact portion 26e is brought into contact with the insulating rod 22 from the inner peripheral surface to almost the center of the thickness of the end surface.
【００６９】さらに、接続金具２６の筒状部２６ｂは、
端部から少なくともおねじ２６ａのねじ３山分の長さま
での所に、筒状部２６ｂの剛性が絶縁棒２２の剛性より
低くなる筒状部２６ｂの厚さの所に第１の点を設定し、
おねじ２６ａのねじ３山分以上の長さの所に、筒状部２
６ｂの剛性が絶縁棒２２の剛性より高くなる筒状部２６
ｂの厚さの所に第２の点を設定し、第１の点と第２の点
とを結んだテーパ状に形成されている。この場合、シー
ルド２５は筒状部２６ｂのテーパ部が終わった奥の方の
厚肉部に取り付けることによって、ねじ部での荷重分担
に影響を及ぼすことを防止できる。Further, the cylindrical portion 26b of the connection fitting 26
A first point is set at a position where the rigidity of the cylindrical portion 26b is lower than the rigidity of the insulating rod 22 at least at a position corresponding to at least three threads of the male screw 26a from the end. And
At least three threads of the male screw 26a, the cylindrical portion 2
The cylindrical portion 26 in which the rigidity of 6b is higher than the rigidity of the insulating rod 22
A second point is set at the position of the thickness b, and is formed in a tapered shape connecting the first point and the second point. In this case, by attaching the shield 25 to the thick portion at the back of the cylindrical portion 26b where the taper portion ends, it is possible to prevent the load from being affected by the screw portion.
【００７０】以上のように接続金具２６の筒状部２６ｂ
を形成することによって、おねじ２６ａのねじ３山の近
傍の接続金具２６と絶縁棒２２との引張剛性が同程度に
なる部分を含むので、ねじ山の荷重分担の差を小さくす
ることができる。As described above, the cylindrical portion 26b of the connection fitting 26
Is formed, a portion near the three threads of the external thread 26a and where the tensile rigidity of the connection fitting 26 and the insulating rod 22 is substantially the same is included, so that the difference in load sharing between the threads can be reduced. .
【００７１】実施例７．図１３は他の実施例の要部を示
す断面図である。図において、２７は接続金具で、内周
面にめねじ２７ａが形成された筒状部２７ｂと、貫通穴
２７ｃを有する底面２７ｄとからなっている。底面２７
ｄは絶縁棒２２の端面と当接する当接部２７ｅおよび接
続金具２６の鍔２６ｄと当接する当接部２７ｆが形成さ
れている。筒状部２７ｂは、端部から少なくともめねじ
２７ａの３山分の長さを絶縁棒２２の剛性と同程度の厚
さにした薄肉部２７ｇが形成されている。そして、薄肉
部２７ｇの先端に曲面状に形成したシールド部２７ｈが
設けられている。Embodiment 7 FIG. FIG. 13 is a sectional view showing a main part of another embodiment. In the figure, reference numeral 27 denotes a connection fitting, which comprises a cylindrical portion 27b having an internal thread 27a formed on the inner peripheral surface, and a bottom surface 27d having a through hole 27c. Bottom 27
As for d, a contact portion 27e that contacts the end face of the insulating rod 22 and a contact portion 27f that contacts the flange 26d of the connection fitting 26 are formed. The cylindrical portion 27b is formed with a thin portion 27g in which at least three ridges of the female screw 27a from the end have a thickness approximately equal to the rigidity of the insulating rod 22. A shield portion 27h formed in a curved shape is provided at the tip of the thin portion 27g.
【００７２】実施例８．図１４は他の実施例の要部を示
す断面図である。図において、２８は接続金具で、筒状
部２８ａの一端に設けた底面２８ｂに貫通穴２８ｃを有
し、筒状部２８ａの内周面にめねじ２８ｄが形成されて
いる。そして、筒状部２８ａの外周面は、端部から少な
くともめねじ２８ｄのねじ３山分の長さまでの所に筒状
部２８ａの剛性が絶縁棒２２の剛性より低くなる筒状部
２８ａの厚さの所を第１の点とし、めねじ２８ｄのねじ
３山分以上の長さの所に筒状部２８ａの剛性が絶縁棒２
２の剛性より高くなる筒状部２８ａの厚さの所を第２の
点とする。Embodiment 8 FIG. FIG. 14 is a sectional view showing a main part of another embodiment. In the figure, reference numeral 28 denotes a connection fitting having a through hole 28c in a bottom surface 28b provided at one end of the cylindrical portion 28a, and a female screw 28d formed on an inner peripheral surface of the cylindrical portion 28a. The outer peripheral surface of the cylindrical portion 28a has a thickness at least from the end to the length of three threads of the female screw 28d, where the rigidity of the cylindrical portion 28a is lower than the rigidity of the insulating rod 22. The first point is defined as a point, and the rigidity of the cylindrical portion 28a is set to be equal to or longer than three threads of the female screw 28d.
The second point is the thickness of the cylindrical portion 28a which is higher than the rigidity of No. 2.
【００７３】そして、接続金具２８の外周面の形状を、
第１の点と第２の点とを結んだテーパ状に形成する。筒
状部２８ａの先端には曲面状に形成したシールド部２８
ｅが設けられている。これによって、めねじ２８ｄのね
じ３山の近傍の接続金具２８と絶縁棒２２との引張剛性
が同程度になる部分を含むので、ねじ山の荷重分担の差
を小さくすることができる。The shape of the outer peripheral surface of the connection fitting 28 is
It is formed in a tapered shape connecting the first point and the second point. A shield part 28 formed in a curved shape is provided at the tip of the cylindrical part 28a.
e is provided. This includes a portion near the three threads of the female screw 28d where the tensile rigidity of the connection fitting 28 and the insulating rod 22 is almost the same, so that the difference in load sharing between the threads can be reduced.
【００７４】実施例９．図１５は他の実施例の要部を示
す断面図、図１６は図１５のＸＶＩ−ＸＶＩ線の断面図
である。図１５および図１６において、２９は図５に示
す接続金具２３とほぼ同様の接続金具で、薄肉部２３ｆ
の形状が異なっている。即ち、接続金具２９は筒状部２
９ａの先端部の周方向に複数個のスリット２９ｂが形成
されている。３０は図５に示す接続金具２４とほぼ同様
の接続金具で、薄肉部２４ｇの形状が異なっている。即
ち、接続金具３０は筒状部３０ａの先端部の周方向に複
数個のスリット３０ｂが形成されている。Embodiment 9 FIG. FIG. 15 is a cross-sectional view showing a main part of another embodiment, and FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG. 15 and 16, reference numeral 29 denotes a connection fitting substantially similar to the connection fitting 23 shown in FIG.
Are different in shape. That is, the connection fitting 29 is connected to the cylindrical portion 2.
A plurality of slits 29b are formed in the circumferential direction of the tip of 9a. Reference numeral 30 denotes a connection fitting substantially similar to the connection fitting 24 shown in FIG. 5, and the shape of the thin portion 24g is different. That is, the connection fitting 30 has a plurality of slits 30b formed in the circumferential direction at the tip of the cylindrical portion 30a.
【００７５】このように各筒状部２９ａ、３０ａの先端
部にスリット２９ｂ、３０ｂを設けることによって、各
接続金具２９、３０の先端部の剛性が低下するため、ね
じ山に加わる荷重の差を小さくできる。By providing the slits 29b, 30b at the distal ends of the tubular portions 29a, 30a, the rigidity of the distal ends of the connecting fittings 29, 30 is reduced. Can be smaller.
【００７６】実施例１０．図１７は他の実施例の要部を
示す断面図である。図において、３１は接続金具で、筒
体３１ａ、３１ｂからなりおねじ３１ｃが形成された筒
状部３１ｄと、筒状部３１ｄと対向して設けられた連結
部３１ｅと、筒状部３１ｄと連結部３１ｅとの間に設け
た鍔３１ｆとからなっている。なお、筒体３１ｂの材料
の弾性係数は筒体３１ａの材料の弾性係数より小さいも
のにしてある。両筒体３１ａ、３１ｂ間はエポキシ系の
接着剤等で接着する。Embodiment 10 FIG. FIG. 17 is a cross-sectional view showing a main part of another embodiment. In the figure, reference numeral 31 denotes a connection fitting, which is a cylindrical part 31d formed of cylindrical bodies 31a and 31b and having an external thread 31c formed thereon, a connecting part 31e provided to face the cylindrical part 31d, and a cylindrical part 31d. And a flange 31f provided between the connecting portion 31e. The elastic modulus of the material of the cylindrical body 31b is smaller than the elastic modulus of the material of the cylindrical body 31a. The two cylinders 31a and 31b are bonded with an epoxy adhesive or the like.
【００７７】３２は筒体３１に固着したシールドで、筒
体３１ｂを押圧している。３３は接続金具で、筒体３３
ａ、３３ｂからなる筒状部３３ｃと、貫通穴３３ｄを有
する底面３３ｅと、筒体３３ａに螺合して筒体３３ｂを
押圧した取付金３３ｆとで構成されている。なお、筒体
３３ｂの材料の弾性係数は筒体３３ａの材料の弾性係数
より小さいものにしてある。両筒体３３ａ、３３ｂ間は
エポキシ系の接着剤等で接着する。Reference numeral 32 denotes a shield fixed to the cylinder 31 and presses the cylinder 31b. Reference numeral 33 denotes a connection fitting,
It comprises a cylindrical portion 33c composed of a and 33b, a bottom surface 33e having a through hole 33d, and a mounting metal 33f screwed into the cylindrical body 33a to press the cylindrical body 33b. The elastic modulus of the material of the cylindrical body 33b is smaller than the elastic modulus of the material of the cylindrical body 33a. The two cylindrical bodies 33a and 33b are bonded with an epoxy adhesive or the like.
【００７８】上記の構成によれば、各接続金具３１、３
３の先端部の剛性が低下するため、ねじ山に加わる荷重
の差を小さくできる。According to the above configuration, each of the connection fittings 31, 3
Since the rigidity of the distal end of the screw 3 decreases, the difference in load applied to the thread can be reduced.
【００７９】実施例１１．図１８は他の実施例の要部を
示す断面図である。図において、３４は接続金具で、筒
状部３４ａと、筒状部３４ａと対向して設けられた連結
部３４ｂと、筒状部３４ａと連結部３４ｂとの間に設け
た鍔３４ｃとからなっている。なお、筒状部３４ａの絶
縁棒２２のめねじ２２ｂの端部側に対向した内側に溝３
４ｄが設けられている。さらに、筒状部３４ａの外周面
にはおねじ３４ｅが形成され、端部から少なくともおね
じ３４ｅのねじ３山分の長さを絶縁棒２２の剛性と同程
度になる厚さにした薄肉部３４ｆが形成されている。Embodiment 11 FIG. FIG. 18 is a sectional view showing a main part of another embodiment. In the figure, reference numeral 34 denotes a connection fitting, which comprises a cylindrical portion 34a, a connecting portion 34b provided to face the cylindrical portion 34a, and a flange 34c provided between the cylindrical portion 34a and the connecting portion 34b. ing. A groove 3 is formed inside the cylindrical portion 34a facing the end of the female screw 22b of the insulating rod 22.
4d is provided. Further, a male screw 34e is formed on the outer peripheral surface of the cylindrical portion 34a, and a thin portion 34f in which at least three threads of the male screw 34e from the end have a thickness substantially equal to the rigidity of the insulating rod 22 is formed. Are formed.
【００８０】３５は接続金具で、内周面にめねじ３５ａ
が形成された筒状部３５ｂと、貫通穴３５ｃを有する底
面３５ｄとからなっている。なお、筒状部３５ｂには端
部から少なくともめねじ３５ａのねじ３山分の長さを絶
縁棒２２の剛性と同程度になる厚さにした薄肉部３５ｅ
が形成されている。接続金具３４の変形が大きくなるた
め、両接続金具３４、３５の荷重の分担割合の差を小さ
くできる。Reference numeral 35 denotes a connection fitting which has a female thread 35a on its inner peripheral surface.
And a bottom surface 35d having a through hole 35c. The cylindrical portion 35b has a thin-walled portion 35e in which at least three threads of the internal thread 35a from the end have a thickness substantially equal to the rigidity of the insulating rod 22.
Are formed. Since the deformation of the connection fitting 34 increases, the difference in the load sharing ratio between the two connection fittings 34 and 35 can be reduced.
【００８１】実施例１２．図１９は他の実施例の要部を
示す断面図である。図において、３６は接続金具で、外
周面におねじ３６ａが形成された筒状部３６ｂと、筒状
部３６ｂと対向して設けられた連結部３６ｃと、筒状部
３６ｂと連結部３６ｃとの間に設けた鍔３６ｄとからな
り、弾性係数が接続金具３５より低い材料が使用されて
いる。なお、筒状部３６ｂの端部から少なくともおねじ
３６ａのねじ３山分の長さを絶縁棒２２の剛性と同程度
になる厚さにした薄肉部３６ｅが形成されている。この
ようにすることによって、接続金具３５の底面３５ｄの
曲げ変形を抑制できるため、両接続金具３５、３６の荷
重の分担割合の差を小さくできる。Embodiment 12 FIG. FIG. 19 is a sectional view showing a main part of another embodiment. In the figure, reference numeral 36 denotes a connection fitting, a cylindrical portion 36b having a screw 36a formed on the outer peripheral surface, a connecting portion 36c provided to face the cylindrical portion 36b, and a cylindrical portion 36b and a connecting portion 36c. A material having an elastic coefficient lower than that of the connection fitting 35 is used. In addition, a thin portion 36e is formed in which at least three threads of the external thread 36a from the end of the cylindrical portion 36b have a thickness substantially equal to the rigidity of the insulating rod 22. In this way, since the bending deformation of the bottom surface 35d of the connection fitting 35 can be suppressed, the difference in the load sharing ratio between the two connection fittings 35 and 36 can be reduced.
【００８２】実施例１３．図２０は他の実施例の要部を
示す断面図である。図において、３７、３８は接続金具
で、図１９の接続金具３５、３６とほぼ同様の構成であ
るが、弾性係数の同じ材料のものでもよい。３９は接続
金具３７の鍔３７ａに螺合したボルトで、接続金具３８
の底面３８ａを押圧して機械的に結合している。これに
よって、鍔３７ａと底面３８ａとの合成した板厚と同程
度の剛性となるので、接続金具３８の底面３８ａの曲げ
変形を抑制できるため、両接続金具３７、３８に伝達さ
れる荷重の分担割合の差を小さくできる。なお、両接続
金具３７、３８間の結合は、溶接などの他の接合手段を
用いてもよい。Embodiment 13 FIG. FIG. 20 is a sectional view showing a main part of another embodiment. In the figure, connection fittings 37 and 38 have substantially the same configuration as the connection fittings 35 and 36 in FIG. 19, but may be made of a material having the same elastic coefficient. Reference numeral 39 denotes a bolt screwed to the flange 37a of the connection fitting 37, and a connection fitting 38
Is pressed down and mechanically connected. As a result, the rigidity is substantially the same as the combined thickness of the flange 37a and the bottom surface 38a, so that the bending deformation of the bottom surface 38a of the connection fitting 38 can be suppressed, so that the load transmitted to both the connection fittings 37, 38 is shared. The difference in ratio can be reduced. Note that the connection between the two connection fittings 37 and 38 may be performed by other joining means such as welding.
【００８３】[0083]
【発明の効果】以上のように、この発明によれば、絶縁
棒のめねじとおねじとにそれぞれ螺合した２つの接続金
具で引張荷重を分担するので、強度の向上が図れる。As described above, according to the present invention, the tensile load is shared by the two fittings screwed into the female screw and the male screw of the insulating rod, thereby improving the strength.
【００８４】また、絶縁棒のめねじと螺合された接続金
具のおねじの端部あるいは絶縁棒のおねじと螺合された
接続金具のめねじの端部に所定の長さの薄肉部を設ける
ことによって、ねじ端部で荷重の伝達が急激に大きくな
るのを抑制できるので、絶縁棒から接続金具へ伝達され
る荷重の分担割合の差を小さくすることができる。Further, a thin portion having a predetermined length is attached to the end of the external thread of the connection fitting screwed to the female thread of the insulating rod or the end of the female thread of the connection fitting screwed to the external thread of the insulating rod. By suppressing the transmission of the load at the screw end, it is possible to suppress a sudden increase in the load, so that the difference in the share of the load transmitted from the insulating rod to the connection fitting can be reduced.
【００８５】また、接続金具の端部にスリットを設ける
ことによって、薄肉部を設けたのと同様の効果が期待さ
れる。Further, by providing a slit at the end of the connection fitting, the same effect as providing a thin portion can be expected.
【００８６】また、接続金具の筒状部を第１の筒体と、
この第１の筒体の端部に固着し第１の筒体の材料より弾
性係数が小さい材料を使用した第２の筒体とで構成した
ことによって、薄肉部を設けたのと同様の効果が期待さ
れる。Further, the cylindrical portion of the connection fitting is connected to the first cylindrical body,
The same effect as the provision of the thin-walled portion is achieved by comprising the second cylindrical body fixed to the end of the first cylindrical body and using a material having a smaller elastic coefficient than the material of the first cylindrical body. There is expected.
【００８７】また、絶縁棒のめねじに螺合した接続金具
の材料より絶縁棒のおねじに螺合した接続金具の材料の
弾性係数が大きいものを使用することによって、絶縁棒
のおねじに螺合した接続金具の底面の曲げ変形を抑制で
きるので、絶縁棒から接続金具へ伝達される荷重の分担
割合の差を小さくできる。Further, by using a material of the connection fitting threaded to the male thread of the insulating rod having a higher elastic modulus than the material of the connection fitting threaded to the female thread of the insulating rod, Since the bending deformation of the bottom surface of the threaded connection fitting can be suppressed, the difference in the sharing ratio of the load transmitted from the insulating rod to the connection fitting can be reduced.
【００８８】また、両接続金具の底面と鍔とを固定手段
で固定することによって、絶縁棒のおねじに螺合した接
続金具の底面の曲げ変形を抑制できるため、両接続金具
に伝達される荷重の分担割合の差を小さくできる。Further, by fixing the bottom surfaces of both connection fittings and the flanges by fixing means, bending deformation of the bottom surface of the connection fitting screwed to the male thread of the insulating rod can be suppressed, so that the transmission is transmitted to both connection fittings. The difference in the load sharing ratio can be reduced.
【００８９】また、絶縁棒のおねじと螺合した接続金具
のめねじとのねじ込み深さと、絶縁棒のめねじと螺合し
た接続金具のおねじとのねじ込み深さとが異なるように
したことによって、両接続金具と絶縁棒との間の応力集
中位置を分散させることができる。Further, the screwing depth of the female screw of the connection fitting screwed with the male screw of the insulating rod is different from the screwing depth of the female screw of the fitting metal screwed with the female screw of the insulating rod. This makes it possible to disperse the stress concentration positions between the connection fittings and the insulating rod.
【００９０】さらに、電界緩和用シールドを中空にした
ので、重量の軽減を図ることができる。Further, since the shield for alleviating the electric field is hollow, the weight can be reduced.
【図１】本発明の実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す断面図である。FIG. 2 is a sectional view showing another embodiment of the present invention.
【図３】（ａ）は本発明の他の実施例を示す断面図およ
び（ｂ）はＩＩＩ−ＩＩＩ線の断面図である。FIG. 3A is a sectional view showing another embodiment of the present invention, and FIG. 3B is a sectional view taken along line III-III.
【図４】本発明の他の実施例を示す断面図である。FIG. 4 is a sectional view showing another embodiment of the present invention.
【図５】本発明の他の実施例を示す断面図である。FIG. 5 is a sectional view showing another embodiment of the present invention.
【図６】接続金具に引張荷重が加わる前の状態を示す説
明図である。FIG. 6 is an explanatory diagram showing a state before a tensile load is applied to the connection fitting.
【図７】図６の接続金具に引張荷重が加わって変形した
状態を模式的に示した説明図である。FIG. 7 is an explanatory view schematically showing a state in which a tensile load is applied to the connection fitting of FIG. 6 and the connection fitting is deformed.
【図８】接続金具に曲げ変形対策を実施した説明図であ
る。FIG. 8 is an explanatory diagram in which a bending deformation countermeasure is implemented on the connection fitting.
【図９】図８の接続金具に引張荷重が加わって変形した
状態を模式的に示した説明図である。9 is an explanatory diagram schematically showing a state in which a tensile load is applied to the connection fitting of FIG. 8 and the connection fitting is deformed.
【図１０】絶縁棒と接続金具とのねじ部での荷重分担率
を示す説明図である。FIG. 10 is an explanatory diagram showing a load sharing ratio at a screw portion between an insulating rod and a connection fitting.
【図１１】図５の構成にしたときの絶縁棒と接続金具と
のねじ部での荷重分担率を示す説明図である。FIG. 11 is an explanatory diagram showing a load sharing ratio at a screw portion between the insulating rod and the connection fitting when the configuration shown in FIG. 5 is used.
【図１２】本発明の他の実施例の要部を示す断面図であ
る。FIG. 12 is a sectional view showing a main part of another embodiment of the present invention.
【図１３】本発明の他の実施例の要部を示す断面図であ
る。FIG. 13 is a sectional view showing a main part of another embodiment of the present invention.
【図１４】本発明の他の実施例の要部を示す断面図であ
る。FIG. 14 is a sectional view showing a main part of another embodiment of the present invention.
【図１５】本発明の他の実施例の要部を示す断面図であ
る。FIG. 15 is a sectional view showing a main part of another embodiment of the present invention.
【図１６】図１５のＸＶＩ−ＸＶＩ線の断面図である。16 is a sectional view taken along line XVI-XVI in FIG.
【図１７】本発明の他の実施例の要部を示す断面図であ
る。FIG. 17 is a sectional view showing a main part of another embodiment of the present invention.
【図１８】本発明の他の実施例の要部を示す断面図であ
る。FIG. 18 is a sectional view showing a main part of another embodiment of the present invention.
【図１９】本発明の他の実施例の要部を示す断面図であ
る。FIG. 19 is a sectional view showing a main part of another embodiment of the present invention.
【図２０】本発明の他の実施例の要部を示す断面図であ
る。FIG. 20 is a sectional view showing a main part of another embodiment of the present invention.
【図２１】従来の絶縁操作ロッドの一部破断を示す正面
図である。FIG. 21 is a front view showing a partly broken portion of a conventional insulating operation rod.
４、１０、１４、１９、２２ 絶縁棒 ４ａ、１０ａ、１４ａ、１９ａ、２２ｂ めねじ ４ｂ、１０ｂ、１４ｂ、２２ｃ おねじ ５、１１、１５、１８、２３、２６、２９、３１、３
４、３６、３７ 接続金具 ５ａ、１１ｂ、１５ｂ、１８ａ、２３ａ、２６ａ、３１
ｃ、３４ｅ、３６ａおねじ ５ｂ、１１ｄ、１５ｃ、１８ｂ、２３ｃ、２６ｃ、３１
ｅ、３４ｂ、３６ｃ連結部 ５ｃ、６ｂ、１１ｃ、２３ｄ、２６ｄ、３１ｆ、３４
ｃ、３６ｄ、３７ａ 鍔 １１ａ、２３ｂ、２６ｂ、３１ｄ、３４ａ、３６ｂ 筒
状部 ２３ｆ、３４ｆ、３６ｅ 薄肉部 ２９ｂ スリット ３１ａ 第１の筒体 ３１ｂ 第２の筒体 ８、２４、２７、２８、３０、３３、３５、３８ 接続
金具 ８ａ、２４ｂ、２７ｂ、２８ａ、３３ｃ、３５ｂ 筒状
部 ８ｃ、２４ｃ、２７ｃ、２８ｃ、３３ｄ、３５ｃ 貫通
穴 ８ｄ、２４ａ、２７ａ、２８ｄ、３５ａ めねじ ２４ｇ、２７ｇ、３５ｅ 薄肉部 ３０ｂ スリット ３３ａ 第１の筒体 ３３ｂ 第２の筒体 ３４ｄ 溝 ２５ シールド体 ３９ ボルト（固定手段）4, 10, 14, 19, 22 Insulating rod 4a, 10a, 14a, 19a, 22b Female thread 4b, 10b, 14b, 22c Male thread 5, 11, 15, 18, 23, 26, 29, 31, 3
4, 36, 37 Connection fittings 5a, 11b, 15b, 18a, 23a, 26a, 31
c, 34e, 36a Male thread 5b, 11d, 15c, 18b, 23c, 26c, 31
e, 34b, 36c Connecting parts 5c, 6b, 11c, 23d, 26d, 31f, 34
c, 36d, 37a Flanges 11a, 23b, 26b, 31d, 34a, 36b Tubular part 23f, 34f, 36e Thin part 29b Slit 31a First cylindrical body 31b Second cylindrical body 8, 24, 27, 28, 30 , 33, 35, 38 Connection fittings 8a, 24b, 27b, 28a, 33c, 35b Tubular portion 8c, 24c, 27c, 28c, 33d, 35c Through-hole 8d, 24a, 27a, 28d, 35a Female thread 24g, 27g, 35e Thin part 30b Slit 33a First cylinder 33b Second cylinder 34d Groove 25 Shield 39 Bolt (fixing means)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西崎 雅芳 尼崎市塚口本町８丁目１番１号 三菱電 機株式会社 伊丹製作所内 (72)発明者 藤井 秀憲 尼崎市塚口本町８丁目１番１号 三菱電 機株式会社 伊丹製作所内 (72)発明者 日高 幹雄 尼崎市塚口本町８丁目１番１号 三菱電 機株式会社 伊丹製作所内 (56)参考文献 特開 平６−203677（ＪＰ，Ａ) 実開 昭58−79819（ＪＰ，Ｕ) 実公 昭36−22948（ＪＰ，Ｙ１) 実公 昭41−21243（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) H01B 17/56 H01H 33/42 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Nishizaki 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Itami Works (72) Inventor Hidenori Fujii 8-1-1 Tsukaguchi Honcho Amagasaki City Mitsubishi (72) Inventor Mikio Hidaka 8-1-1 Tsukaguchi Honmachi, Amagasaki City Mitsubishi Electric Corporation Itami Works (56) References JP-A-6-203677 (JP, A) Sho 58-79819 (JP, U) Jiko 36-22948 (JP, Y1) Jiko 41-21243 (JP, Y1) (58) Fields investigated (Int. Cl. 6 , DB name) H01B 17 / 56 H01H 33/42
Claims (19)
のおねじを有する絶縁棒と、一端に上記絶縁棒の上記第
１のめねじに螺合する第２のおねじを有し他端に設けた
連結部と上記第２のおねじとの間に鍔を設けた第１の接
続金具と、筒状部の一端に設けた底面に貫通穴を有し、
上記貫通穴を上記第１の接続金具の上記連結部が貫通
し、上記筒状部に設けた第２のめねじが上記絶縁棒の上
記第１のおねじと螺合して上記底面で上記第１の接続金
具の上記鍔を押圧する第２の接続金具とを備えた絶縁操
作ロッド。An end portion has a first female thread and an outer peripheral surface has a first female thread.
Between an insulating rod having a male screw, a second male screw having one end screwed to the first female screw of the insulating rod at one end, and a connecting portion provided at the other end and the second male screw; A first connection fitting provided with a flange, and a through hole in a bottom surface provided at one end of the cylindrical portion;
The connecting portion of the first connection fitting penetrates the through hole, and a second female screw provided in the cylindrical portion is screwed with the first male screw of the insulating rod, and the bottom surface is provided with the second male screw. An insulating operation rod comprising: a second connection fitting for pressing the flange of the first connection fitting.
２のおねじ側の先端に半球形のカップ状シールドを設
け、上記第１の接続金具と上記シールドを電気的に接続
したことを特徴とする請求項１に記載の絶縁操作ロッ
ド。2. The insulating rod is hollow, and a hemispherical cup-shaped shield is provided at the end of the second male screw side of the first connection fitting, and the first connection fitting and the shield are electrically connected. The insulated operation rod according to claim 1, wherein:
めねじに第１の接続金具を螺合したときにできる上記第
１のめねじ先端部の空間に、誘電率が１を上回る絶縁物
を充墳したことを特徴とする請求項１に記載の絶縁操作
ロッド。3. An insulating rod having a solid dielectric constant and a dielectric constant of 1 in a space formed at a tip end of the first female screw formed when a first connection fitting is screwed to a first female screw of the insulating rod. The insulated operation rod according to claim 1, wherein the insulating operation rod is filled with more than the insulating material.
めねじ穴先端部の形状を半球状に形成し、この半球状の
凹面を導電性の物質でコーティングし、第１の接続金具
と上記コーティング部を電気的に接続したことを特徴と
する請求項１に記載の絶縁操作ロッド。4. The insulating rod is solid, and the tip of the first female screw hole of the insulating rod is formed in a hemispherical shape, and the hemispherical concave surface is coated with a conductive material. The insulated operation rod according to claim 1, wherein the connection fitting and the coating portion are electrically connected.
ねじを外周面に第１のおねじを有する絶縁棒と、一端に
第２の筒状部を有し上記絶縁棒の上記第１のめねじと螺
合する第２のおねじを上記第２の筒状部の外周面に有
し、他端に設けた連結部と上記第２のおねじとの間に鍔
を有する第１の接続金具と、第３の筒状部の一端に設け
た底面に貫通穴を有し、上記貫通穴を上記第１の接続金
具の上記連結部が貫通し、上記第３の筒状部の内周面に
設けた第２のめねじが上記絶縁棒の上記第１のおねじと
螺合して上記底面で上記第１の接続金具の上記鍔を押圧
する第２の接続金具とを備えた絶縁操作ロッド。5. An insulating rod having a first female screw on an inner peripheral surface of a first cylindrical portion at an end and a first male screw on an outer peripheral surface, and a second cylindrical portion at one end. A second male screw to be screwed with the first female screw of the insulating rod is provided on an outer peripheral surface of the second cylindrical portion, and a second male screw is formed between a connecting portion provided at the other end and the second male screw. A first connection fitting having a flange therebetween, and a through hole in a bottom surface provided at one end of the third tubular portion, wherein the connection portion of the first connection fitting passes through the through hole; A second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod to press the flange of the first connection fitting at the bottom surface. An insulated operation rod including the second connection fitting.
内周面に第１のめねじを外周面に第１のおねじを有する
絶縁棒と、一端に第２の筒状部を有し上記絶縁棒の上記
第１のめねじと螺合する第２のおねじを上記第２の筒状
部の外周面に有し、上記第２の筒状部の一端から少なく
とも上記第２のおねじのねじ３山分の長さを上記絶縁棒
の剛性と同程度になる厚さにし、上記第２のおねじの他
の部分を上記絶縁棒の剛性より高くなる厚さにし、他端
に設けた連結部と上記第２のおねじとの間に鍔を有する
第１の接続金具と、第３の筒状部の一端に設けた底面に
貫通穴を有し、上記貫通穴を上記第１の接続金具の上記
連結部が貫通し、上記第３の筒状部の内周面に設けた第
２のめねじが上記絶縁棒の上記第１のおねじと螺合して
上記底面で上記第１の接続金具の上記鍔を押圧する第２
の接続金具とを備えた絶縁操作ロッド。6. An insulating rod having a first cylindrical portion at an end portion, a first female screw on an inner peripheral surface of the cylindrical portion and a first male screw on an outer peripheral surface, and a second rod at one end. A second external thread that is screwed with the first female thread of the insulating rod on the outer peripheral surface of the second cylindrical portion, and one end of the second cylindrical portion The thickness of at least three threads of the second external thread is set to a thickness that is substantially the same as the rigidity of the insulating rod, and the other portion of the second external thread is higher than the rigidity of the insulating rod. A first connection fitting having a thickness between the connecting portion provided at the other end and the second male screw, and a through hole in a bottom surface provided at one end of the third cylindrical portion; The connection portion of the first connection fitting penetrates the through hole, and the second female screw provided on the inner peripheral surface of the third cylindrical portion is connected to the first male screw of the insulating rod. Screw the first bottom on the bottom Presses the flange of the connection fitting of the second
Insulated operating rod provided with a connection fitting.
状部の内周面に第１のめねじを外周面に第１のおねじを
有する絶縁棒と、一端に第２の筒状部を有し上記絶縁棒
の上記第１のめねじと螺合する第２のおねじを上記第２
の筒状部の外周面に有し、他端に設けた連結部と上記第
２のおねじとの間に鍔を有する第１の接続金具と、第３
の筒状部の一端に設けた底面に貫通穴を有し、上記貫通
穴を上記第１の接続金具の上記連結部が貫通し、上記第
３の筒状部の内周面に設けた第２のめねじが上記絶縁棒
の上記第１のおねじと螺合して上記底面で上記第１の接
続金具の上記鍔を押圧し、上記第３の筒状部の他端から
少なくとも上記第２のめねじのねじ３山分の長さを上記
絶縁棒の剛性と同程度になる厚さにし、上記第２のめね
じの他の部分を上記絶縁棒の剛性より高くなる厚さにし
た第２の接続金具とを備えた絶縁操作ロッド。7. An insulating rod having a first cylindrical portion at an end, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw having a second cylindrical portion and screwing with the first female screw of the insulating rod is connected to the second male screw.
A first connection fitting having a flange between the connection part provided at the other end and the second male screw, and
A through hole is provided on a bottom surface provided at one end of the cylindrical portion, and the connecting portion of the first connection fitting penetrates the through hole, and a through hole is provided on an inner peripheral surface of the third cylindrical portion. A second female screw is screwed with the first male screw of the insulating rod and presses the flange of the first connection fitting at the bottom surface, and at least the third female part is connected to the other end of the third cylindrical portion. The length of the three female threads of the second female thread was set to a thickness that was almost the same as the rigidity of the insulating rod, and the other portion of the second female thread was set to a thickness that was higher than the rigidity of the insulating rod. An insulating operation rod including a second connection fitting.
内周面に第１のめねじを外周面に第１のおねじを有する
絶縁棒と、一端に第２の筒状部を有し上記絶縁棒の上記
第１のめねじと螺合する第２のおねじを上記第２の筒状
部の外周面に有し、上記第２の筒状部の一端から少なく
とも上記第２のおねじのねじ３山分の長さまでの所に上
記第２の筒状部の剛性が上記絶縁棒の剛性より低くなる
上記第２の筒状部の厚さにした第１の点を設定し、上記
第２のおねじのねじ３山分以上の長さの所に上記第２の
筒状部の剛性が上記絶縁棒の剛性より高くなる上記第２
の筒状部の厚さにした第２の点を設定し、上記第２の筒
状部が上記第１の点と上記第２の点とを結んだテーパ状
に形成され、他端に設けた連結部と上記第２のおねじと
の間に鍔を有する第１の接続金具と、第３の筒状部の一
端に設けた底面に貫通穴を有し、上記貫通穴を上記第１
の接続金具の上記連結部が貫通し、上記第３の筒状部の
内周面に設けた第２のめねじが上記絶縁棒の上記第１の
おねじと螺合して上記底面で上記第１の接続金具の上記
鍔を押圧する第２の接続金具とを備えた絶縁操作ロッ
ド。8. An insulating rod having a first cylindrical portion at an end portion, a first female screw on an inner peripheral surface of the cylindrical portion and a first male screw on an outer peripheral surface, and a second rod at one end. A second external thread that is screwed with the first female thread of the insulating rod on the outer peripheral surface of the second cylindrical portion, and one end of the second cylindrical portion The thickness of the second cylindrical portion is set so that the rigidity of the second cylindrical portion is lower than the rigidity of the insulating rod at least up to the length of three threads of the second external thread. 1 is set, and the rigidity of the second cylindrical portion is higher than the rigidity of the insulating rod at a position at least three threads of the second external thread.
A second point having a thickness of the cylindrical portion is set, and the second cylindrical portion is formed in a tapered shape connecting the first point and the second point, and is provided at the other end. A first connection fitting having a flange between the connecting portion and the second external thread, and a through hole in a bottom surface provided at one end of the third tubular portion, wherein the through hole is formed by the first
The connecting portion of the connecting fitting penetrates, and a second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod, and the second male screw is provided at the bottom surface. An insulating operation rod comprising: a second connection fitting for pressing the flange of the first connection fitting.
状部の内周面に第１のめねじを外周面に第１のおねじを
有する絶縁棒と、一端に第２の筒状部を有し上記絶縁棒
の上記第１のめねじと螺合する第２のおねじを上記第２
の筒状部の外周面に有し、他端に設けた連結部と上記第
２のおねじとの間に鍔を有する第１の接続金具と、第３
の筒状部の一端に設けた底面に貫通穴を有し、上記貫通
穴を上記第１の接続金具の上記連結部が貫通し、上記第
３の筒状部の内周面に設けた第２のめねじが上記絶縁棒
の上記第１のおねじと螺合して上記底面で上記第１の接
続金具の上記鍔を押圧し、上記第３の筒状部の他端から
少なくとも上記第２のめねじのねじ３山分の長さまでの
所に上記第３の筒状部の剛性が上記絶縁棒の剛性より低
くなる上記第３筒状部の厚さにした第１の点を設定し、
上記第２のめねじのねじ３山分以上の長さの所に上記第
３の筒状部の剛性が上記絶縁棒の剛性より高くなる上記
第３の筒状部の厚さにした第２の点を設定し、上記第３
の筒状部が上記第１の点と上記第２の点とを結んだテー
パ状に形成された第２の接続金具とを備えた絶縁操作ロ
ッド。9. An insulating rod having a first cylindrical portion at an end, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw having a second cylindrical portion and screwing with the first female screw of the insulating rod is connected to the second male screw.
A first connection fitting having a flange between the connection part provided at the other end and the second male screw, and
A through hole is provided on a bottom surface provided at one end of the cylindrical portion, and the connecting portion of the first connection fitting penetrates the through hole, and a through hole is provided on an inner peripheral surface of the third cylindrical portion. A second female screw is screwed with the first male screw of the insulating rod and presses the flange of the first connection fitting at the bottom surface, and at least the third female part is connected to the other end of the third cylindrical portion. A first point is set up to a thickness of the third cylindrical portion where the rigidity of the third cylindrical portion is lower than the rigidity of the insulating rod up to the length of three threads of the second female screw. And
A third cylindrical portion having a thickness equal to or greater than three threads of the second female screw, the rigidity of the third cylindrical portion being higher than the rigidity of the insulating rod. And set the third point
An insulated operation rod comprising: a cylindrical connecting portion having a tapered second connection fitting connecting the first point and the second point.
の内周面に第１のめねじを外周面に第１のおねじを有す
る絶縁棒と、一端に第２の筒状部を有し上記絶縁棒の上
記第１のめねじと螺合する第２のおねじを上記第２の筒
状部の外周面に有し、上記第２の筒状部の一端から少な
くとも上記第２のおねじのねじ３山分の長さを越える所
まで上記第２の筒状部の一端から他端の方向に向かって
スリットを設け、他端に設けた連結部と上記第２のおね
じとの間に鍔を有する第１の接続金具と、第３の筒状部
の一端に設けた底面に貫通穴を有し、上記貫通穴を上記
第１の接続金具の上記連結部が貫通し、上記第３の筒状
部の内周面に設けた第２のめねじが上記絶縁棒の上記第
１のおねじと螺合して上記底面で上記第１の接続金具の
上記鍔を押圧する第２の接続金具とを備えた絶縁操作ロ
ッド。10. An insulating rod having a first cylindrical portion at an end portion, a first female screw on an inner peripheral surface of the cylindrical portion and a first external thread on an outer peripheral surface, and a second rod at one end. A second external thread that is screwed with the first female thread of the insulating rod on the outer peripheral surface of the second cylindrical portion, and one end of the second cylindrical portion A slit is provided from one end of the second cylindrical portion toward the other end to at least a position exceeding the length of three threads of the second external thread, and the connecting portion provided at the other end and A first connection fitting having a flange between the second male screw, and a through hole in a bottom surface provided at one end of the third cylindrical portion, wherein the through hole is formed by the first connection fitting of the first connection fitting; A connecting portion penetrates, and a second female screw provided on an inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod, and the first connection fitting is formed at the bottom surface. Press the above collar An insulated operation rod including the second connection fitting.
筒状部の内周面に第１のめねじを外周面に第１のおねじ
を有する絶縁棒と、一端に第２の筒状部を有し上記絶縁
棒の上記第１のめねじと螺合する第２のおねじを上記第
２の筒状部の外周面に有し、他端に設けた連結部と上記
第２のおねじとの間に鍔を有する第１の接続金具と、第
３の筒状部の一端に設けた底面に貫通穴を有し、上記貫
通穴を上記第１の接続金具の上記連結部が貫通し、上記
第３の筒状部の内周面に設けた第２のめねじが上記絶縁
棒の上記第１のおねじと螺合して上記底面で上記第１の
接続金具の上記鍔を押圧し、上記第３の筒状部の他端か
ら少なくとも上記第２のめねじのねじ３山分の長さを越
える所まで上記第３の筒状部の他端から一端の方向に向
かってスリットを設けた第２の接続金具とを備えた絶縁
操作ロッド。11. An insulating rod having a first cylindrical portion at an end portion, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw on the outer peripheral surface of the second cylindrical portion, which is screwed to the first female screw of the insulating rod, and provided at the other end. A first connection fitting having a flange between the portion and the second external thread; and a through hole in a bottom surface provided at one end of the third tubular portion, wherein the through hole is connected to the first connection. The connecting portion of the metal fitting penetrates, and a second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod, and the first female screw is formed on the bottom surface. Presses the flange of the connecting fitting, and extends the other end of the third cylindrical portion from the other end of the third cylindrical portion to at least a portion exceeding the length of three threads of the second female screw. From one end to the other end. An insulated operating rod comprising a second connecting fitting.
の内周面に第１のめねじを外周面に第１のおねじを有す
る絶縁棒と、第２の筒状部を構成した第１の筒体の外周
面に上記絶縁棒の上記第１のめねじと螺合する第２のお
ねじを有し、上記第１の筒体の端部に少なくとも上記第
２のおねじのねじ３山が形成された上記第１の筒体より
弾性係数が小さい材料からなる第２の筒体を固着し、上
記第１の筒体を挟んで上記第２の筒体の反対側に設けた
連結部と上記第２のおねじとの間に鍔を有する第１の接
続金具と、第３の筒状部の一端に設けた底面に貫通穴を
有し、上記貫通穴を上記第１の接続金具の上記連結部が
貫通し、上記第３の筒状部の内周面に設けた第２のめね
じが上記絶縁棒の上記第１のおねじと螺合して上記底面
で上記第１の接続金具の上記鍔を押圧する第２の接続金
具とを備えた絶縁操作ロッド。12. An insulating rod having a first cylindrical portion at an end, a first female screw on an inner peripheral surface of the cylindrical portion, and a first male screw on an outer peripheral surface, and a second cylinder. An outer peripheral surface of a first cylindrical body having a cylindrical portion, a second male screw screwed with the first female screw of the insulating rod, and at least an end of the first cylindrical body at the end of the first cylindrical body; A second cylinder made of a material having a smaller elastic coefficient than the first cylinder formed with three threads of two external threads is fixed, and the second cylinder is sandwiched by the first cylinder. A first connection fitting having a flange between the connecting portion provided on the opposite side of the first male screw and the second male screw, and a through hole in a bottom surface provided at one end of the third cylindrical portion; The connection portion of the first connection fitting penetrates the hole, and a second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod. The first connection metal on the bottom surface And a second connection fitting for pressing the flange of the fitting.
筒状部の内周面に第１のめねじを外周面に第１のおねじ
を有する絶縁棒と、一端に第２の筒状部を有し上記絶縁
棒の上記第１のめねじと螺合する第２のおねじを上記第
２の筒状部の外周面に有し、他端に設けた連結部と上記
第２のおねじとの間に鍔を有する第１の接続金具と、第
３の筒状部を構成した第１の筒体の一端に設けた底面に
貫通穴を有し、上記貫通穴を上記第１の接続金具の上記
連結部が貫通し、上記第１の筒体の内周面に設けた第２
のめねじが上記絶縁棒の上記第１のおねじと螺合して上
記底面で上記第１の接続金具の上記鍔を押圧し、上記第
１の筒体の他端に少なくとも上記第２のめねじのねじ３
山が形成された上記第１の筒体より弾性係数が小さい材
料からなる第２の筒体を固着した第２の接続金具とを備
えた絶縁操作ロッド。13. An insulating rod having a first cylindrical portion at an end portion, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw on the outer peripheral surface of the second cylindrical portion, which is screwed to the first female screw of the insulating rod, and provided at the other end. A first connection fitting having a flange between the portion and the second external thread, and a through hole in a bottom surface provided at one end of a first cylindrical body constituting a third cylindrical portion, The second connecting portion of the first connection fitting penetrates the through hole and is provided on the inner peripheral surface of the first cylindrical body.
A female screw is screwed with the first male screw of the insulating rod and presses the flange of the first connection fitting at the bottom surface, and the other end of the first cylindrical body has at least the second male screw. Female thread 3
An insulating operation rod comprising: a second connecting member to which a second cylindrical body made of a material having a smaller elastic coefficient than the first cylindrical body having the ridges is fixed.
の内周面に第１のめねじを外周面に第１のおねじを有す
る絶縁棒と、一端に第２の筒状部を有し上記絶縁棒の上
記第１のめねじと螺合する第２のおねじを上記第２の筒
状部の外周面に有し、上記第２のおねじの他端側の上記
第２の筒状部の内周面に溝が形成され、他端に設けた連
結部と上記第２のおねじとの間に鍔を有する第１の接続
金具と、第３の筒状部の一端に設けた底面に貫通穴を有
し、上記貫通穴を上記第１の接続金具の上記連結部が貫
通し、上記第３の筒状部の内周面に設けた第２のめねじ
が上記絶縁棒の上記第１のおねじと螺合して上記底面で
上記第１の接続金具の上記鍔を押圧する第２の接続金具
とを備えた絶縁操作ロッド。14. An insulating rod having a first cylindrical portion at an end, a first female thread on an inner peripheral surface of the cylindrical portion and a first external thread on an outer peripheral surface, and a second rod at one end. A second male screw that is screwed with the first female screw of the insulating rod on the outer peripheral surface of the second cylindrical portion, and the other end of the second male screw is provided. A first connection fitting having a groove formed on the inner peripheral surface of the second cylindrical portion on the side, and having a flange between the connecting portion provided at the other end and the second male screw; A second through hole provided on a bottom surface provided at one end of the cylindrical portion, the connecting portion of the first connection fitting penetrating the through hole, and an inner peripheral surface of the third cylindrical portion. A second connection fitting having a female screw threadedly engaged with the first external thread of the insulating rod and pressing the flange of the first connection fitting at the bottom surface.
筒状部の内周面に第１のめねじを外周面に第１のおねじ
を有する絶縁棒と、一端に第２の筒状部を有し上記絶縁
棒の上記第１のめねじと螺合する第２のおねじを上記第
２の筒状部の外周面に有し、他端に設けた連結部と上記
第２のおねじとの間に上記絶縁棒の端面に上記絶縁棒の
内周面からほぼ半分の厚さの所まで当接する鍔を有する
第１の接続金具と、第３の筒状部の一端に設けた底面に
貫通穴を有し、上記貫通穴を上記第１の接続金具の上記
連結部が貫通し、上記第３の筒状部の内周面に設けた第
２のめねじが上記絶縁棒の上記第１のおねじと螺合して
上記底面の第１の当接部で上記第１の接続金具を押圧す
るとともに、上記底面の第２の当接部が上記絶縁棒の端
面に上記絶縁棒の外周面からほぼ半分の厚さの所まで当
接するようにした第２の接続金具とを備えた絶縁操作ロ
ッド。15. An insulating rod having a first cylindrical portion at an end, a first female screw on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw on the outer peripheral surface of the second cylindrical portion, which is screwed to the first female screw of the insulating rod, and provided at the other end. A first connection fitting having a flange between the portion and the second external thread, the flange being in contact with an end surface of the insulating rod from the inner peripheral surface of the insulating rod to a location approximately half the thickness; and a third cylinder. A second through hole provided on the inner peripheral surface of the third tubular portion, the through portion having a through hole on a bottom surface provided at one end of the third tubular portion; A female screw is screwed with the first male screw of the insulating rod to press the first connection fitting at the first contact portion of the bottom surface, and the second contact portion of the bottom surface is formed of the second contact portion. Outside of the above insulating rod An insulated operating rod having a second connection fitting which abuts from the peripheral surface to a position having a thickness of about half.
筒状部の内周面に第１のめねじを外周面に第１のおねじ
を有する絶縁棒と、一端に第２の筒状部を有し上記絶縁
棒の上記第１のめねじと螺合する第２のおねじを上記第
２の筒状部の外周面に有し、他端に設けた連結部と上記
第２のおねじとの間に鍔を有する第１の接続金具と、第
３の筒状部の一端に設けた底面に貫通穴を有し、上記貫
通穴を上記第１の接続金具の上記連結部が貫通し、上記
第３の筒状部の内周面に設けた第２のめねじが上記絶縁
棒の上記第１のおねじと螺合して上記底面で上記第１の
接続金具の上記鍔を押圧し、上記第１の接続金具より弾
性係数が高い材料で構成されている第２の接続金具とを
備えた絶縁操作ロッド。16. An insulating rod having a first cylindrical portion at an end portion, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw on the outer peripheral surface of the second cylindrical portion, which is screwed to the first female screw of the insulating rod, and provided at the other end. A first connection fitting having a flange between the portion and the second external thread; and a through hole in a bottom surface provided at one end of the third tubular portion, wherein the through hole is connected to the first connection. The connecting portion of the metal fitting penetrates, and a second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod, and the first female screw is formed on the bottom surface. And a second connection fitting made of a material having a higher elastic modulus than the first connection fitting.
筒状部の内周面に第１のめねじを外周面に第１のおねじ
を有する絶縁棒と、一端に第２の筒状部を有し上記絶縁
棒の上記第１のめねじと螺合する第２のおねじを上記第
２の筒状部の外周面に有し、他端に設けた連結部と上記
第２のおねじとの間に鍔を有する第１の接続金具と、第
３の筒状部の一端に設けた底面に貫通穴を有し、上記貫
通穴を上記第１の接続金具の上記連結部が貫通し、上記
第３の筒状部の内周面に設けた第２のめねじが上記絶縁
棒の上記第１のおねじと螺合して上記底面で上記第１の
接続金具の上記鍔を押圧する第２の接続金具と、この第
２の接続金具の底面と上記第１の接続金具の上記鍔とを
機械的に固定した固定手段とを備えた絶縁操作ロッド。17. An insulating rod having a first cylindrical portion at an end portion, a first female thread on an inner peripheral surface of the first cylindrical portion, and a first external thread on an outer peripheral surface, and one end. And a second male screw on the outer peripheral surface of the second cylindrical portion, which is screwed to the first female screw of the insulating rod, and provided at the other end. A first connection fitting having a flange between the portion and the second external thread; and a through hole in a bottom surface provided at one end of the third tubular portion, wherein the through hole is connected to the first connection. The connecting portion of the metal fitting penetrates, and a second female screw provided on the inner peripheral surface of the third cylindrical portion is screwed with the first male screw of the insulating rod, and the first female screw is formed on the bottom surface. An insulated operating rod comprising: a second connecting member for pressing the flange of the connecting member; and fixing means for mechanically fixing the bottom surface of the second connecting member and the flange of the first connecting member. .
具の第２のめねじとのねじ込み深さと、上記絶縁棒の第
１のめねじと第１の接続金具の第２のおねじとのねじ込
み深さとが異なるように構成したことを特徴とする請求
項１から請求項１７のいずれかに記載の絶縁操作ロッ
ド。18. The screwing depth of the first male screw of the insulating rod and the second female screw of the second connection fitting, and the second female thread of the insulating rod and the second female screw of the first connection fitting. The insulated operation rod according to any one of claims 1 to 17, wherein the screwing depth with the male screw is different.
から少なくとも第２のおねじのねじ３山分を越えた上記
第２の筒状部の内周面に、凸曲面状の頭部を有するシー
ルド体を上記頭部が上記第１の接続金具の一端から突出
するように取り付けたことを特徴とする請求項５から請
求項１８のいずれかに記載の絶縁操作ロッド。19. A convex curved surface is formed on the inner peripheral surface of the second cylindrical portion which exceeds at least three threads of the second external thread from one end of the second cylindrical portion of the first connection fitting. The insulated operation rod according to any one of claims 5 to 18, wherein a shield body having a head is attached so that the head projects from one end of the first connection fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5309249A JP2992184B2 (en) | 1993-03-08 | 1993-12-09 | Insulated operating rod |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-46366 | 1993-03-08 | ||
| JP4636693 | 1993-03-08 | ||
| JP5309249A JP2992184B2 (en) | 1993-03-08 | 1993-12-09 | Insulated operating rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06318415A JPH06318415A (en) | 1994-11-15 |
| JP2992184B2 true JP2992184B2 (en) | 1999-12-20 |
Family
ID=26386476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5309249A Expired - Fee Related JP2992184B2 (en) | 1993-03-08 | 1993-12-09 | Insulated operating rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2992184B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000149729A (en) * | 1998-11-06 | 2000-05-30 | Hitachi Ltd | Gas breaker |
| JP2002124163A (en) * | 2000-10-16 | 2002-04-26 | Mitsubishi Electric Corp | Switchgear |
| JP4050023B2 (en) | 2001-09-17 | 2008-02-20 | 三菱電機株式会社 | Insulated operation rod |
| NL1020582C2 (en) * | 2002-05-13 | 2003-11-25 | Holec Holland Nv | Drive rod for switch. |
| JP4555086B2 (en) * | 2002-12-16 | 2010-09-29 | 三菱電機株式会社 | Gas insulated switchgear |
| EP1494254B1 (en) * | 2003-07-02 | 2006-04-19 | Abb Research Ltd. | Force transmission element, method and apparatus for producing it |
| DE102006013444A1 (en) * | 2006-03-17 | 2007-09-20 | Siemens Ag | Control rod arrangement for high voltage power switch construction, has inner and outer superficies surfaces formed by respective holder fitting unit, where holder fitting units are connected with each other in form-fit manner by thread |
| JP5128024B1 (en) | 2012-05-31 | 2013-01-23 | 三菱電機株式会社 | Gas circuit breaker |
| DE102017203039A1 (en) | 2017-02-24 | 2018-08-30 | Siemens Aktiengesellschaft | Shift rod for a circuit breaker |
| CN110911243B (en) * | 2018-09-14 | 2022-03-29 | 平高集团有限公司 | Insulating pull rod and quick switch |
| DE102019205855A1 (en) * | 2019-04-24 | 2020-10-29 | Siemens Aktiengesellschaft | Switching rod of a drive of an electrical switch |
-
1993
- 1993-12-09 JP JP5309249A patent/JP2992184B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06318415A (en) | 1994-11-15 |
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