JPS63925Y2 - - Google Patents
Info
- Publication number
- JPS63925Y2 JPS63925Y2 JP693180U JP693180U JPS63925Y2 JP S63925 Y2 JPS63925 Y2 JP S63925Y2 JP 693180 U JP693180 U JP 693180U JP 693180 U JP693180 U JP 693180U JP S63925 Y2 JPS63925 Y2 JP S63925Y2
- Authority
- JP
- Japan
- Prior art keywords
- scaffolding
- bolt
- insulating washer
- protrusions
- utility pole
- 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
Links
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 4
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Landscapes
- Ladders (AREA)
- Insulating Bodies (AREA)
Description
【考案の詳細な説明】
本考案は電柱と足場ボルトとを絶縁する絶縁ワ
ツシヤーの改良に関するものである。[Detailed Description of the Invention] The present invention relates to an improvement of an insulating washer that insulates utility poles and scaffolding bolts.
コンクリート材等の電柱に作業用の足場ボルト
を取付けるには、第１図のように電柱１に設けら
れた取付穴２に、ベークライト等の絶縁材製キヤ
ツプ３を埋め込み、キヤツプ３内側の雌ネジに足
場ボルト５の雄ネジを絶縁ワツシヤー７を介して
螺着している（実公昭38−6416）。この絶縁ワツ
シヤー７は、雨天時に電柱１が濡れた際にも、雨
水が電柱１から足場ボルト５に伝わらないよう、
電柱１と足場ボルト５とを電気的に絶縁し、雨天
時に工事作業者を漏電事故から保護する働きをす
る。従来、この絶縁ワツシヤー７の挿通孔８の内
径は、第２図のように足場ボルト５外径よりもや
や大きくしてあり、嵌め込み易くしてある。とこ
ろが、電柱１に足場ボルト５を取付ける際、足場
ボルト５より嵌め込んだ絶縁ワツシヤー７が抜け
易く、しばしば地上に落ちてしまつていた。地上
に落ちてしまつては、わざわざ電柱を降りて拾わ
なければならず非能率極まりない。この解決のた
め、挿通孔８の内径を足場ボルト５外径とほぼ等
しくすると、今度は抜け難くなるが、同時に嵌め
難くなりこの場合も取付作業が円滑に進まない。 To attach a working scaffolding bolt to a utility pole made of concrete, etc., embed a cap 3 made of insulating material such as Bakelite in the mounting hole 2 provided on the utility pole 1 as shown in Figure 1, and then tighten the female screw inside the cap 3. The male screw of the scaffolding bolt 5 is screwed into the screw through the insulating washer 7 (Jetko Kosho 38-6416). This insulating washer 7 prevents rainwater from being transmitted from the utility pole 1 to the scaffolding bolts 5 even when the utility pole 1 gets wet during rainy weather.
It electrically insulates the utility pole 1 and the scaffolding bolt 5, and serves to protect construction workers from electrical leakage accidents in rainy weather. Conventionally, the inner diameter of the insertion hole 8 of the insulating washer 7 has been made slightly larger than the outer diameter of the scaffolding bolt 5, as shown in FIG. 2, to facilitate fitting. However, when attaching the scaffolding bolt 5 to the utility pole 1, the insulating washer 7 fitted into the scaffolding bolt 5 tends to come off and often falls to the ground. If it falls to the ground, you have to go all the way down the pole to pick it up, which is extremely inefficient. To solve this problem, if the inner diameter of the insertion hole 8 is made approximately equal to the outer diameter of the scaffolding bolt 5, it will become difficult to pull out, but at the same time it will be difficult to fit, and the installation work will not proceed smoothly in this case as well.
そこで本考案者は抜け難く、しかも嵌め易い構
造について鋭意検討を重ねた。その結果挿通孔８
の内壁面に、その内周をほぼ等分する３個以上の
突起を、該突起の幅より広い間隙で設けると共
に、該突起の先端を結ぶ円周が足場ボルト外周と
ほぼ同一の大きさとなるよう形成すれば良いこと
を見出し本考案を完成した。 Therefore, the inventor of the present invention conducted extensive research into a structure that would be difficult to remove and yet easy to fit. As a result, the insertion hole 8
Three or more protrusions that divide the inner circumference almost equally are provided on the inner wall surface with a gap wider than the width of the protrusions, and the circumference connecting the tips of the protrusions is approximately the same size as the outer circumference of the scaffolding bolt. He discovered that it would be better to form the structure in this way and completed the present invention.
以下に本考案を図面に記載した実施例と共に詳
細に説明するに、７は絶縁ワツシヤーで、やや肉
厚のボス部９と、ボス部９に設けられている挿通
孔８、ボス部９から円錘形に広がる笠部１０より
構成されている。挿通孔８の内径は足場ボルト５
外径よりもやや大きく（約１〜３mm程度大きく）
形成してあり、挿通孔８の内壁面には、その内周
をほぼ等分する３個の突起１１が、突起１１の幅
より広い間隔（本実施例では約６倍の間隔）で設
けられている。そして突起１１の先端を結ぶ円周
１２は、足場ボルト５外周とほぼ同一の大きさに
形成してある。ほぼ同一とは、同一の大きさか、
若干小さい大きさを指す。突起１１の数は本実施
例では３個であるが、勿論これに限定される訳で
はなく、４個でも６個でも良い。尚上記絶縁ワツ
シヤーは、通常、ポリエチレン、ポリ塩化ビニル
などのプラスチツクス、あるいはゴムを成形する
ことにより製造される。 The present invention will be explained in detail below along with an embodiment shown in the drawings. Reference numeral 7 denotes an insulating washer, which includes a slightly thick boss part 9, an insertion hole 8 provided in the boss part 9, and a circular ring from the boss part 9. It is composed of a cap 10 that spreads out in the shape of a pyramid. The inner diameter of the insertion hole 8 is the same as that of the scaffolding bolt 5.
Slightly larger than the outer diameter (approximately 1 to 3 mm larger)
On the inner wall surface of the insertion hole 8, three protrusions 11 that divide the inner circumference almost equally are provided at intervals wider than the width of the protrusions 11 (in this embodiment, the interval is about six times as large). ing. A circumference 12 connecting the tips of the protrusions 11 is formed to have approximately the same size as the outer circumference of the scaffolding bolt 5. Almost the same means the same size,
Refers to a slightly smaller size. Although the number of protrusions 11 is three in this embodiment, it is of course not limited to this, and may be four or six. The insulating washer is usually manufactured by molding plastics such as polyethylene, polyvinyl chloride, or rubber.
このように挿通孔８の内壁面に突起１１を設け
ると、突起１１先端は足場ボルト５の外周に接触
することになる。そして絶縁ワツシヤー７に足場
ボルト５を通す際には、その材質がゴム又はプラ
スチツクからなり、その幅が小さいことから、突
起１１はそれ程障害とならず、スムーズに挿通さ
せることができる。ところが、一旦挿通させ、手
をを離し、足場ボルト５を下に向けても、突起１
１先端と足場ボルト５外周との摩擦によりすぐに
は脱落しない。 When the protrusion 11 is provided on the inner wall surface of the insertion hole 8 in this manner, the tip of the protrusion 11 comes into contact with the outer periphery of the scaffolding bolt 5. When passing the scaffolding bolt 5 through the insulating washer 7, since the material is made of rubber or plastic and its width is small, the protrusion 11 does not pose much of an obstacle and can be inserted smoothly. However, even if the scaffolding bolt 5 is turned downward after being inserted, the protrusion 1
Due to the friction between the tip of the scaffold bolt 5 and the outer periphery of the scaffold bolt 5, it does not fall off immediately.
また本実施例の絶縁ワツシヤーにおいては、挿
通孔８の内壁面をほぼ等分する位置に３個の突起
１１が設けられていることから、足場ボルト５に
この絶縁ワツシヤーを挿通した際には挿通孔８と
足場ボルト５の中心を同一にすることができ、絶
縁ワツシヤーの中心が足場ボルト５の中心からず
れて絶縁性が悪くなるといつたことも防止でき
る。つまり絶縁ワツシヤー７と足場ボルト５の中
心がずれ、足場ボルト５によつてボス部９を均等
に押圧することができなくなると、笠部１０の一
部分に大きな力が加わり、その部分に亀裂が入つ
たり、場合によつては笠部１０が電柱側に曲げら
れ、雨天時に電柱１を流れる雨水が足場ボルト５
に伝わり、電気的絶縁性が低下するといつたこと
があるが、本実施例の絶縁ワツシヤー７を用いれ
ば、その中心と足場ボルト５の中心とを必ず一致
させることができるので絶縁性を低下するといつ
たことがないのである。 In addition, in the insulating washer of this embodiment, since the three protrusions 11 are provided at positions that approximately equally divide the inner wall surface of the insertion hole 8, when this insulating washer is inserted into the scaffolding bolt 5, the insulating washer will not pass through. The centers of the holes 8 and the scaffolding bolts 5 can be made to be the same, and it is possible to prevent the center of the insulating washer from shifting from the center of the scaffolding bolts 5, thereby preventing the insulation from deteriorating. In other words, if the centers of the insulating washer 7 and the scaffolding bolts 5 are misaligned, and the scaffolding bolts 5 are no longer able to press the boss portion 9 evenly, a large force is applied to a portion of the cap 10, causing a crack in that portion. In some cases, the cap 10 may be bent toward the utility pole, and rainwater flowing down the utility pole 1 during rainy weather may be transferred to the scaffolding bolts 5.
However, if the insulating washer 7 of this embodiment is used, the center of the insulating washer 7 can always be aligned with the center of the scaffolding bolt 5, so there is no risk of deteriorating the electrical insulation. It has never happened before.
以上詳述した如く、本考案はボス部周辺に笠部
が形成され、雨天時に電柱に流れる雨水が足場ボ
ルトに伝わらないようにした足場ボルト用絶縁ワ
ツシヤーの、足場ボルトへの挿通孔内壁をほぼ等
分する位置に３個以上の突起を、その突起の幅よ
り広い間隔で設け、その突起の先端を結ぶ円周が
足場ボルト５外周とほぼ同一の大きさになるよう
ゴム又はプラスチツクスにより形成するという簡
単な構造にもかかわらず、足場ボルトに嵌め易
く、しかも脱落しにくいという優れた利点をもた
らすと共に、足場ボルトにこの絶縁ワツシヤーを
嵌めた場合その中心を足場ボルトの中心と同一に
することができ、足場ボルトによつてボス部を均
等に押圧し、笠部を曲げたり、亀裂を生ずること
なく、電柱を流れる雨水を確実に遮断することが
でき、その絶縁性を向上することができる。 As described in detail above, the present invention has an insulating washer for scaffolding bolts that has a cap formed around the boss to prevent rainwater flowing down the utility pole from being transmitted to the scaffolding bolts during rainy days. Three or more protrusions are provided at equally divided positions at intervals wider than the width of the protrusions, and formed of rubber or plastic so that the circumference connecting the tips of the protrusions is approximately the same size as the outer circumference of the scaffolding bolt 5. Despite its simple structure, it has the excellent advantage of being easy to fit onto scaffolding bolts and difficult to fall off, and when this insulating washer is fitted onto scaffolding bolts, its center is the same as the center of the scaffolding bolt. The boss part can be evenly pressed by the scaffolding bolts, making it possible to reliably block rainwater flowing through the pole without bending or cracking the cap, and improving its insulation properties. .
更にもし電柱取付後足場ボルトの締付けが緩
み、雨天時に絶縁ワツシヤー内に雨水が入つてし
まつた場合には、突起間の間隔が狭いとその隙間
に入つた雨水は表面張力によつてその中に溜ま
り、天気が回復しても中々蒸発せず、足場ボルト
が錆び易いといつた問題や、天気回復後足場ボル
トを締め直しても挿通孔内に溜まつた雨水によつ
て元の絶縁性をとり戻せないといつた問題を生ず
るのであるが、本考案の絶縁ワツシヤーでは突起
間の間隔が突起の幅より広いので水はけがよく、
足場ボルトが錆びるといつたことはなく、天気回
復後足場ボルトを締め直せば絶縁性を回復するこ
とができる。 Furthermore, if the scaffolding bolts become loose after installation on the utility pole and rainwater gets into the insulating washer during rainy weather, if the spacing between the protrusions is narrow, the rainwater that gets into the gap will be trapped by surface tension. The problem is that even when the weather improves, the scaffolding bolts do not easily evaporate, and even when the scaffolding bolts are retightened after the weather improves, the original insulation properties are lost due to rainwater that has accumulated in the insertion holes. However, with the insulating washer of the present invention, the distance between the protrusions is wider than the width of the protrusions, so drainage is good.
The scaffolding bolts have never rusted, and insulation can be restored by re-tightening the scaffolding bolts after the weather has cleared.
従つて本考案の足場ボルト用絶縁ワツシヤーを
用いれば、電柱上の工事者の作業性を向上するこ
とができ、しかも作業の安全性をも向上すること
ができることとなる。 Therefore, by using the insulating washer for scaffolding bolts of the present invention, it is possible to improve the work efficiency of the workers on the utility pole, and also to improve the safety of the work.
第１図は電柱に足場ボルトを取付けた状態を示
す縦断面図、第２図は従来の絶縁ワツシヤーを示
す正面図、第３図は本考案の実施例を示す正面
図、第４図は同１部破断平面図である。
１……電柱、３……キヤツプ、５……足場ボル
ト、７……絶縁ワツシヤー、８……挿通孔、１１
……突起。
Fig. 1 is a longitudinal cross-sectional view showing the scaffolding bolt attached to a utility pole, Fig. 2 is a front view showing a conventional insulating washer, Fig. 3 is a front view showing an embodiment of the present invention, and Fig. 4 is the same. FIG. 3 is a partially cutaway plan view. 1... Telephone pole, 3... Cap, 5... Scaffolding bolt, 7... Insulating washer, 8... Insertion hole, 11
……protrusion.
Claims (1)
孔が設けられたボス部を有すると共に、該ボス部
周縁に、電柱を流れる雨水が足場ボルトに伝わら
ないよう雨水を遮断する笠部を形成し、電柱と足
場ボルトとを電気的に絶縁するゴム又はプラスチ
ツクスからなる電柱の足場ボルト用絶縁ワツシヤ
ーであつて、 上記挿通孔の内壁面に、該挿通孔の内周をほぼ
等分する３個以上の突起を、該突起の幅より広い
間隔で設けるとともに、該突起の先端を結ぶ円周
が足場ボルト外周とほぼ同一の大きさになるよう
形成してなることを特徴とする電柱の足場ボルト
用絶縁ワツシヤー。[Claim for Utility Model Registration] It has a boss part in the center with an insertion hole with an inner diameter larger than the outer diameter of the scaffolding bolt, and a part around the boss part to prevent rainwater flowing down the utility pole from being transmitted to the scaffolding bolt. An insulating washer for a scaffolding bolt of a utility pole made of rubber or plastic that forms a shielding cap and electrically insulates the utility pole and the scaffolding bolt, the insulating washer for a scaffolding bolt of a utility pole having an inner periphery on the inner wall surface of the penetration hole. 3 or more protrusions dividing the scaffolding bolt approximately equally are provided at intervals wider than the width of the protrusions, and the circumference connecting the tips of the protrusions is approximately the same size as the outer circumference of the scaffold bolt. Features an insulating washer for scaffolding bolts on utility poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP693180U JPS63925Y2 (en) | 1980-01-22 | 1980-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP693180U JPS63925Y2 (en) | 1980-01-22 | 1980-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56108319U JPS56108319U (en) | 1981-08-22 |
| JPS63925Y2 true JPS63925Y2 (en) | 1988-01-11 |
Family
ID=29603594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP693180U Expired JPS63925Y2 (en) | 1980-01-22 | 1980-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63925Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020128810A (en) * | 2019-02-12 | 2020-08-27 | 株式会社愛洋産業 | Insulation packing |
-
1980
- 1980-01-22 JP JP693180U patent/JPS63925Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56108319U (en) | 1981-08-22 |
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