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JPH0297708A - Iron lid attachment device for iron frame - Google Patents

Iron lid attachment device for iron frame

Info

Publication number
JPH0297708A
JPH0297708A JP63247468A JP24746888A JPH0297708A JP H0297708 A JPH0297708 A JP H0297708A JP 63247468 A JP63247468 A JP 63247468A JP 24746888 A JP24746888 A JP 24746888A JP H0297708 A JPH0297708 A JP H0297708A
Authority
JP
Japan
Prior art keywords
nut
bolt
ellipse
nuts
tool
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.)
Granted
Application number
JP63247468A
Other languages
Japanese (ja)
Other versions
JPH0660651B2 (en
Inventor
Toshiyuki Yonezu
米津 利之
Kazuo Nakagawa
中川 和夫
Jun Utashiro
潤 歌代
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON CHIYUUTETSUKAN KK
SANYO KOGYO KK
Takigen Manufacturing Co Ltd
Sanyo Industries Ltd
Original Assignee
NIPPON CHIYUUTETSUKAN KK
SANYO KOGYO KK
Takigen Manufacturing Co Ltd
Sanyo Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON CHIYUUTETSUKAN KK, SANYO KOGYO KK, Takigen Manufacturing Co Ltd, Sanyo Industries Ltd filed Critical NIPPON CHIYUUTETSUKAN KK
Priority to JP63247468A priority Critical patent/JPH0660651B2/en
Publication of JPH0297708A publication Critical patent/JPH0297708A/en
Publication of JPH0660651B2 publication Critical patent/JPH0660651B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE:To simply prevent illegal intrusion and tampering by making the outer periphery shape of the head part of a bolt and/or a nut an ellipse akin to a true round, and using an exclusive tool having the opening part engaging with the ellipse. CONSTITUTION:The outer periphery shape 3 of the head part of a bolt and/or a nut is made an ellipse akin to a true round, the ratio of long/short diameters is made 1.05-1.5, and attaching/detaching is made by using the exclusive tool 5 for the bolt and nut. And on the tool 5, the ratio of long/short diameters of the opening part 7, engaging with the bolt and nut and having an ellipse state akin to a true round, is made 1.05-1.5. By this method, the time and cost etc. required to tighten and remove the bolt and nut etc. are almost the same as in the case where conventional ones are used, and when the method is applied to public equipments or main facilities of an enterprise, etc., a long time use without anxiety can be possible with illegal intrusion prevented and without tampering.

Description

【発明の詳細な説明】 「発明の目的」 (産業上の利用分野) この発明は一般産業において用いられるボルト、ナツト
の形状および該ボルト、ナツト用専用工具に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to the shapes of bolts and nuts used in general industry, and special tools for the bolts and nuts.

(従来の技術) 突出したボルトにナツトを螺着する場合、もしくはネジ
穴にボルトを螺着せしめる場合、モンキースパナもしく
はボックススパナ等を利用して簡単に且つ確実に接合対
象物を固定することができる。その理由はボルトの頭部
もしくはナツトの外周形状が殆んど正六角形であり、モ
ンキースパナは相対する平行な二面に工具が適合するよ
うになっており、ボックススパナの開口部の形状も正六
角形となっており、殆んど遊びがなくボルトの頭部もし
くはナツトに嵌合するようになっている。
(Prior art) When screwing a nut onto a protruding bolt or screwing a bolt into a screw hole, it is possible to easily and reliably fix the objects to be joined using a monkey spanner or box spanner. can. The reason for this is that the outer circumferential shape of the bolt head or nut is almost a regular hexagon, the tool of a monkey spanner fits on two opposing parallel surfaces, and the shape of the opening of a box spanner is also a regular hexagon. It is rectangular and fits into the bolt head or nut with almost no play.

このように規格化されていることはボルト、ナツトの取
り付け、取り外しを簡単にし、ネジ結合と云う産業上の
基本的な結合方法において、ボルト、ナツトおよび取り
付は工具の互換性を図ったものに他ならない。
This standardization makes it easy to install and remove bolts and nuts, and in the basic industrial connection method called screw connection, bolts, nuts, and installation tools are compatible. Nothing but.

然しなからボルト、ナツトは必らずしも取り付は取り外
しが便利であればよいとは限らない。−旦螺合せしめた
ものは二度と取り外せないようにボルト頭部の裏側もし
くはナツトの裏側に逆止用の突起を設けたものが市販さ
れているが、取り外す必要の生じた場合、これでは被接
合物に損傷を与えることになり好ましくない。
However, it is not necessarily the case that bolts and nuts are convenient to install or remove. - There are products on the market that have a check protrusion on the back of the bolt head or the back of the nut so that once they are screwed together, they cannot be removed again. This is not desirable as it may cause damage to property.

例えば、上下水道、都市ガス、地下電線等のマンホール
の蓋は通常、地表に設けられているが、道路もしくは舗
道においては通行の妨げとならないように、蓋の上面を
路面と同一高ざにしているから、ボルトもしくはナツト
による蓋の締め付けは、蓋に凹陥部を設け、地下の金枠
もしくはボルトの脚部との間でネジ止めされるようにな
っている。しかし、このような蓋の結合でも、使用され
ているボルトの頭部、ナツト(袋ナツトも含めて)の締
め付けに利用される外周形状は正六角形が殆んどである
For example, manhole covers for water and sewage systems, city gas, underground power lines, etc. are usually installed on the ground surface, but on roads or pavements, the top surface of the cover should be at the same height as the road surface so as not to obstruct traffic. Therefore, when tightening the lid with bolts or nuts, a recess is provided in the lid, and the lid is screwed to a metal frame underground or to the legs of the bolt. However, even in such a lid connection, the head of the bolt used and the outer circumferential shape used for tightening the nut (including a cap nut) are almost always regular hexagons.

(発明が解決しようとする課題) 前述したように、公共用の諸設備用マンホールの蓋もし
くは企業の主要な設備等が互換性のある形状のボルト、
ナットのため、互換性のある工具を利用して簡単に不法
に開蓋されて侵入を受は悪戯されることが多い。
(Problem to be Solved by the Invention) As mentioned above, bolts with compatible shapes for manhole covers for public facilities or major equipment for companies, etc.
Because of the nut, the lid is easily opened illegally using a compatible tool and is often exploited for intrusion.

本発明はこのような現状に鑑み創案されたものであって
、ボルト頭部もしくはナツトの外周形状を特殊な形状と
しながらも、その形状に適合する工具を使用する場合に
は、簡単に而も何回でも自由に取り付は取り外しのでき
る、ボルト、ナツトおよびその専用工具を提供すること
を目的とする。
The present invention has been devised in view of the current situation, and it is easy to use when using a tool that fits the shape of a bolt head or a nut with a special outer circumferential shape. The purpose is to provide bolts, nuts, and their special tools that can be installed and removed as many times as desired.

「発明の構成」 (課題を解決するための手段) 前述の目的を達成するために本発明者等は、(1)  
ボルトの頭部、ナツトの何れかの一方もしくは双方の外
周形状を、眞円に近い楕円としたことを特徴とするボル
トとナット。
"Structure of the invention" (Means for solving the problem) In order to achieve the above-mentioned purpose, the inventors have (1)
A bolt and nut characterized in that the outer circumference of either or both of the bolt head and the nut is an ellipse that is close to a perfect circle.

(2)ボルトの頭部、ナツトの何れかの一方もしくは双
方の外周形状を眞円に近い楕円とし、長径/短径の比を
1,05〜1.5とした請求項1に記載したボルトとナ
ツト。
(2) The bolt according to claim 1, wherein the outer circumferential shape of either or both of the head of the bolt and the nut is an ellipse close to a perfect circle, and the ratio of major axis/minor axis is 1.05 to 1.5. said Natsuto.

(3)棒状体の一端に、眞円に近い楕円状の外周形状を
有するボルトもしくはナツトに嵌合する開口部を備え、
他端に取っ手を形成せしめたことを特徴とするボルト、
ナツト用専用工具。
(3) One end of the rod-shaped body is provided with an opening that fits into a bolt or nut having an elliptical outer circumferential shape close to a perfect circle;
A bolt characterized by having a handle formed on the other end;
Special tool for nuts.

(4)  ボルト、ナツトに嵌合する眞円に近い楕円状
の開口部の長径/短径の比を1.05〜1.5とした請
求項3に記載したボルト、ナツト用専用工具を住に提案
する。本発明のボルト、ナツト、およびこれに適合する
専用工具を使用することにより不法な侵入、悪戯を簡単
に防止することができる。
(4) The dedicated tool for bolts and nuts according to claim 3, in which the ratio of the major axis to the minor axis of the nearly perfect elliptical opening that fits into the bolt or nut is 1.05 to 1.5. to propose. Illegal entry and tampering can be easily prevented by using the bolts and nuts of the present invention, and special tools suitable for them.

(作用) この発明の特徴は、ボルトの頭部、ナツト(袋す7トの
場合には締め付けに使用される面)の外周形状および該
ボルト、ナツトの締め付け、取り外し用専用工具の開口
部の内周面形状を、眞円に近い楕円としたことである。
(Function) The features of this invention include the outer peripheral shape of the head of the bolt, the nut (the surface used for tightening in the case of a bag bolt), and the opening of the special tool for tightening and removing the bolt and nut. The inner peripheral surface shape is an ellipse close to a perfect circle.

市販されているボックススパナ、もしくはモンキースパ
ナ、ヤットコ、スパナ等を利用して、ボルトもしくはナ
ツトを回そうとしても空滑りして動かない形状にしたこ
とである。角形の形状にしなかったのは、ボルト、ナツ
トと同一形状でなくても、従来のボックススパナの内周
面の何れかの角とのボルト等の角部が係合し回転させら
れるのを恐れたものである。楕円としたのは、専用治具
による回動が可能であり、長径/短径の比を適当に選択
することが可能であるからであり、本願発明の主旨から
すればかなり眞円に近いこと(即ち長径/短径の比は1
.0に近いこと)が望ましいが、あまり眞円に近づける
と開閉の度数が多い場合、ナツト等の外周面、又は工具
の内周面の磨耗等により利用者自身でも回せな(なる恐
れがあり、又、極端に長短径の比を大きくすることは、
モンキースパナ等で上から挟んで回すことが可能となる
ので、最大範囲1.05〜1.5とした。
This means that even if you try to turn a bolt or nut using a commercially available box spanner, monkey spanner, Yatko spanner, etc., the bolt or nut will slip and will not move. The reason why we did not use a rectangular shape is to prevent the corner of the bolt, etc. from engaging with any corner of the inner peripheral surface of a conventional box spanner and causing it to rotate, even if it is not the same shape as the bolt or nut. It is something that The reason why it is an ellipse is because it can be rotated using a special jig and the ratio of major axis/minor axis can be appropriately selected, and from the perspective of the purpose of the present invention, it should be quite close to a perfect circle. (In other words, the ratio of major axis/minor axis is 1
.. However, if it is too close to a perfect circle, the user may not be able to turn it by themselves due to wear and tear on the outer circumferential surface of the nut or the inner circumferential surface of the tool if the number of openings and closings is large. Also, extremely increasing the ratio of major and minor axes is
The maximum range was set at 1.05 to 1.5 because it is possible to pinch and turn it from above with a monkey wrench or the like.

尚、専用工具の場合、ボルト、ナツトと嵌合する開口部
の形状は長、短径の比はボルト、ナツトと同一にして、
大きさのみ若干(ボルト、ナツトの長、短径より0.5
〜2.0%程度)大きくした程度としないと空廻りする
危険性がある。取っ手は棒状体と直交する左右方向へ対
象的な長さで略T字型を形成せしめるが、非常にボルト
、ナットが小さい場合にはボックススパナタイプとして
一側のみでもよい。
In addition, in the case of a special tool, the shape of the opening that fits into the bolt or nut should be the same as the length and breadth ratio of the bolt or nut.
Only the size is slightly larger (0.5 from the length and breadth of bolts and nuts)
~2.0%) Otherwise, there is a risk of spinning. The handle is formed into a substantially T-shape with symmetrical lengths in the left-right direction perpendicular to the bar, but if the bolt or nut is very small, it may be of a box spanner type and only on one side.

又、T字型は中央の棒状体が多少上に突出してもよい。Further, in the T-shape, the rod-shaped body at the center may protrude somewhat upward.

(実施例) 第1図は本発明の袋ナツト1を示すもので、(81図は
平面図を示し、球形頂部2と工具で締め付けられる楕円
状外周面3が図示されている。(bl図は同じ袋ナット
の側面図(左半分)と断面図(右半分)を示したもので
、球形頂部2楕円状外周面3ネジ孔4が示されている。
(Example) Fig. 1 shows the cap nut 1 of the present invention (Fig. 81 shows a plan view, and the spherical top 2 and the elliptical outer peripheral surface 3 that can be tightened with a tool are illustrated. (Fig. bl) 2 shows a side view (left half) and a cross-sectional view (right half) of the same cap nut, showing a spherical top 2, an elliptical outer peripheral surface 3, and a screw hole 4.

(C1図は底面図であり、中心にネジ孔4が、外側に楕
円形外周面3に囲まれるナットの肉厚が示されている。
(Figure C1 is a bottom view, showing the screw hole 4 in the center and the thickness of the nut surrounded by the elliptical outer peripheral surface 3 on the outside.

この実施例における長径/短径は1.16である。The major axis/minor axis in this example is 1.16.

第2図は第1図で示した袋ナツトlの取り付は取り外し
に使用される専用工具5であり、ta1図は側面図(開
口部のみは右半分を断面図で示す)である。棒状体6の
一端にナツトに嵌合する開口部7が設けられ、他端には
T形の取っ手8が形成されている。(b)図は該専用工
具5の底面図であり、内周面形状が楕円形の開口部7お
よび取っ手8が図示されている。長短径向れもナツトの
外径よりこの開口部を1.015倍とした。
Fig. 2 shows a special tool 5 used for attaching and removing the cap nut l shown in Fig. 1, and Fig. ta1 is a side view (only the opening is shown in a sectional view of the right half). An opening 7 that fits into a nut is provided at one end of the rod-shaped body 6, and a T-shaped handle 8 is formed at the other end. (b) is a bottom view of the special tool 5, showing an opening 7 and a handle 8 having an elliptical inner peripheral surface shape. This opening was set to be 1.015 times larger than the outer diameter of the nut in both long and short axis directions.

第3図は本発明の袋ナツトを密閉型マンホールの蓋に適
用した断面図を示したものである。
FIG. 3 shows a sectional view of the cap nut of the present invention applied to a closed manhole cover.

マンホールの金枠10に形成された空間部11に、T字
型頭部12を有するボルトの脚部13を上にし、更に補
助固定金具14を入れて固定し、シール用バッキング1
5を載せてから、鉄蓋16をかぶせ、鉄蓋の端部に形成
せしめられた凹陥部17に設けたネジ孔からボルトの脚
部13が現れるようにし、袋ナツトlを手で廻し込み、
最後には第2図において説明した専用工具5により締め
つけた。第4図は前図の平面図である。
The leg part 13 of the bolt having the T-shaped head 12 is placed in the space 11 formed in the metal frame 10 of the manhole, and the auxiliary fixture 14 is further inserted and fixed, and the sealing backing 1 is fixed.
5, then cover with the iron lid 16, make sure that the leg part 13 of the bolt is exposed from the screw hole provided in the recessed part 17 formed at the end of the iron lid, and turn the cap nut l by hand.
Finally, it was tightened using the special tool 5 explained in FIG. FIG. 4 is a plan view of the previous figure.

以上ナツトについて記載したが、これがボルトの頭部で
あって原理的には全く同一であり、適合される専用工具
については、ナツト用と全く同じものが使用されること
は云うまでもない。又、接合された物体が表側もしくは
裏側の何れからも開けられる場合には、ナツト、ボルト
の双方とも同一形状にしておき、何れの側からも専用工
具により開は易くしておく必要があることは当然である
Although the nut has been described above, this is the head of the bolt and is in principle exactly the same, and it goes without saying that the same specialized tools as those used for the nut are used. Additionally, if a joined object can be opened from either the front or back side, it is necessary to make both nuts and bolts the same shape so that they can be opened easily from either side using a special tool. Of course.

「発明の効果」 以上詳細に説明したように、本発明になる形状のボルト
、ナットをこれに適合する専用工具を使用し着脱する場
合には、ボルト、ナツト等の締め付は取り外しに要する
時間、費用等は従来のものの場合と殆んど同一で、公共
物もしくは企業の主要な設備等に応用すれば、不法な侵
入を防止し悪戯をされることなく長期間安心して使用す
ることができる。
"Effects of the Invention" As explained in detail above, when bolts and nuts having the shape of the present invention are attached and detached using a special tool compatible with the bolts and nuts, the tightening of the bolts and nuts takes a long time to remove. The costs are almost the same as conventional ones, and if applied to public property or major corporate equipment, it can be used safely for a long time without being tampered with and prevents illegal intrusion. .

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明のナットの形状を示すもので、(a)は
平面図、(b)は側面図(左半分)と断面図(右半分’
) 、(C)は底面図である。 第2図は第1図のナツト用専用工具であって、(a)は
側面図、(blは底面図である。第3図は密閉型マンホ
ールの蓋の固定に本発明のナツトを使用した例を断面図
で示したもので、第4図は前図の平面図である。 ■:袋ナツト 3:楕円状外周面 5:専用工具 7:開口部 lO:金枠 12;T字型頭部 14:補助固定金具 16:鉄蓋 2:球形頂部 4:ネジ穴 6:棒状体 8:取っ手 ll:空間部 13:脚部 15:シール用バンキング 17:凹陥部
Figure 1 shows the shape of the nut of the present invention, (a) is a plan view, (b) is a side view (left half) and a sectional view (right half').
) and (C) are bottom views. Fig. 2 shows a special tool for the nut shown in Fig. 1, in which (a) is a side view and (bl is a bottom view). Fig. 3 shows the nut of the present invention used to fix the cover of a closed type manhole. An example is shown in cross-sectional view, and Fig. 4 is a plan view of the previous figure.■: Cap nut 3: Oval outer peripheral surface 5: Special tool 7: Opening lO: Metal frame 12; T-shaped head Part 14: Auxiliary fixture 16: Iron lid 2: Spherical top 4: Screw hole 6: Rod-shaped body 8: Handle 11: Space 13: Leg 15: Seal banking 17: Concave part

Claims (4)

【特許請求の範囲】[Claims] (1)ボルトの頭部、ナットの何れかの一方もしくは双
方の外周形状を、眞円に近い楕円としたことを特徴とす
るボルトとナット。
(1) A bolt and nut characterized in that the outer circumferential shape of either or both of the bolt head and the nut is an ellipse that is close to a perfect circle.
(2)ボルトの頭部、ナットの何れかの一方もしくは双
方の外周形状を眞円に近い楕円とし、長径/短径の比を
1.05〜1.5とした請求項1に記載したボルトとナ
ット。
(2) The bolt according to claim 1, wherein the outer circumferential shape of one or both of the head of the bolt and the nut is an ellipse close to a perfect circle, and the ratio of major axis/minor axis is 1.05 to 1.5. and nuts.
(3)棒状体の一端に、眞円に近い楕円状の外周形状を
有するボルトもしくはナットに嵌合する開口部を備え、
他端に取っ手を形成せしめたことを特徴とするボルト、
ナット用専用工具。
(3) One end of the rod-shaped body is provided with an opening that fits into a bolt or nut having an elliptical outer circumferential shape close to a perfect circle;
A bolt characterized by having a handle formed on the other end;
Special tool for nuts.
(4)ボルト、ナットに嵌合する眞円に近い楕円状の開
口部の長径/短径の比を1.05〜1.5とした請求項
3に記載したボルト、ナット用専用工具。
(4) The special tool for bolts and nuts according to claim 3, wherein the ratio of the major axis to the minor axis of the nearly perfect elliptical opening that fits into the bolt or nut is 1.05 to 1.5.
JP63247468A 1988-10-03 1988-10-03 Iron lid mounting device for iron frame Expired - Fee Related JPH0660651B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63247468A JPH0660651B2 (en) 1988-10-03 1988-10-03 Iron lid mounting device for iron frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63247468A JPH0660651B2 (en) 1988-10-03 1988-10-03 Iron lid mounting device for iron frame

Publications (2)

Publication Number Publication Date
JPH0297708A true JPH0297708A (en) 1990-04-10
JPH0660651B2 JPH0660651B2 (en) 1994-08-10

Family

ID=17163898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63247468A Expired - Fee Related JPH0660651B2 (en) 1988-10-03 1988-10-03 Iron lid mounting device for iron frame

Country Status (1)

Country Link
JP (1) JPH0660651B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07208426A (en) * 1994-01-28 1995-08-11 Miwa Lock Co Ltd Screw
NL1021737C2 (en) * 2002-10-24 2004-04-27 Alcoa Nederland Bv Locking device for e.g. access hatch in lamppost, comprises screw bolt with non round head which can be turned using cap
GB2395152A (en) * 2002-11-09 2004-05-19 Mmtt Ltd A driving tool
JP2012073538A (en) * 2010-09-29 2012-04-12 Sharp Corp Rotary driving force transmission member, photoreceptor drum, process cartridge, and image forming apparatus
GB2468951B (en) * 2009-03-27 2014-03-05 Anthony Molloy Lock assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1188163A (en) * 1967-04-19 1970-04-15 Jujiro Okada An Elliptically-Headed Screw
JPS5022182U (en) * 1973-06-22 1975-03-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1188163A (en) * 1967-04-19 1970-04-15 Jujiro Okada An Elliptically-Headed Screw
JPS5022182U (en) * 1973-06-22 1975-03-12

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07208426A (en) * 1994-01-28 1995-08-11 Miwa Lock Co Ltd Screw
NL1021737C2 (en) * 2002-10-24 2004-04-27 Alcoa Nederland Bv Locking device for e.g. access hatch in lamppost, comprises screw bolt with non round head which can be turned using cap
GB2395152A (en) * 2002-11-09 2004-05-19 Mmtt Ltd A driving tool
GB2395152B (en) * 2002-11-09 2006-12-20 Mmtt Ltd A driving tool
GB2468951B (en) * 2009-03-27 2014-03-05 Anthony Molloy Lock assembly
JP2012073538A (en) * 2010-09-29 2012-04-12 Sharp Corp Rotary driving force transmission member, photoreceptor drum, process cartridge, and image forming apparatus

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