JPH042205Y2 - - Google Patents
Info
- Publication number
- JPH042205Y2 JPH042205Y2 JP1986058031U JP5803186U JPH042205Y2 JP H042205 Y2 JPH042205 Y2 JP H042205Y2 JP 1986058031 U JP1986058031 U JP 1986058031U JP 5803186 U JP5803186 U JP 5803186U JP H042205 Y2 JPH042205 Y2 JP H042205Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer cover
- wall surface
- locking
- lock member
- frame tube
- 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
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
Description
【考案の詳細な説明】
(産業上の利用分野)
この考案はマンホールの開口部を覆蓋するマン
ホール用外蓋のための施錠装置に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a locking device for an outer manhole cover that covers the opening of a manhole.
(従来の技術)
従来ではマンホール用外蓋の枠管への取付け状
態をロツクするために例えば枠管の上端部の内壁
面、および、外蓋の側周面にそれぞれ嵌合可能な
コニカル面を形成し、外蓋を枠管の上端部に圧入
して外蓋の取外しを防止したり、外蓋の裏面に取
着した施錠装置の錠板を枠管に形成した錠受部に
掛止して外蓋を施錠していた。(Prior art) Conventionally, in order to lock the attachment state of the manhole outer cover to the frame pipe, for example, a conical surface that can be fitted to the inner wall surface of the upper end of the frame pipe and the side peripheral surface of the outer cover, respectively, has been used. The outer cover can be press-fitted into the upper end of the frame tube to prevent the outer cover from being removed, or the lock plate of the locking device attached to the back of the outer cover can be hooked to the lock receiver formed on the frame tube. The outer lid was locked.
(考案が解決しようとする問題点)
上記施錠手段の場合には外蓋の取外し作業が煩
雑で取外し専用の装置が必要となつたり、埋設さ
れた枠管を掘り起して施錠用の加工を行う必要が
あり、とくに、車両が頻繁に通行する道路での枠
管の掘り起し工事が極めて困難となる問題点があ
つた。(Problems to be solved by the invention) In the case of the above-mentioned locking means, the removal of the outer cover is complicated and requires special removal equipment, or the buried pipe frame has to be dug up and processed for locking. In particular, there was a problem in that it was extremely difficult to excavate the frame pipes on roads that were frequently traveled by vehicles.
本考案の目的は上記問題点を解消して枠管への
加工を排除しうるとともに、外蓋の施錠状態を強
化しうる施錠装置を提供することである。 An object of the present invention is to provide a locking device that can eliminate the above-mentioned problems and eliminate the need for processing the frame tube, and can also strengthen the locked state of the outer lid.
(問題点を解決するための手段)
本考案はマンホール用の枠管内に嵌合される外
蓋の端部付近下面に設けた支持部材には前記枠管
の内壁面に接離させるために形成されたロツク部
材を自重による揺動動作可能で前記内壁面に対接
して揺動端が規定されるように枢支するととも
に、前記ロツク部材にはこのロツク部材の揺動姿
勢を変換操作するために設けた操作部材を連繋し
た施錠装置を要旨とするものである。(Means for Solving the Problems) The present invention provides a support member provided on the lower surface near the end of an outer cover fitted into a manhole frame pipe in order to make it come into contact with and separate from the inner wall surface of the frame pipe. The locking member is pivotally supported so that it can swing under its own weight and its swinging end is defined in contact with the inner wall surface, and the locking member is provided with a mechanism for changing the swinging posture of the locking member. The gist of this is a locking device that connects operating members provided in the locking device.
(作用)
本考案装置はマンホールの外蓋の端部付近下面
に対し上下方向への揺動可能で枠管の内壁面との
接離可能に枢支されたロツク部材を内壁面側へ揺
動操作して揺動端で枠管に内接させ、外蓋に上方
への押圧力が加えられたときにロツク部材を前記
内壁面に対し喰込み状に圧接させてロツク部材の
揺動支点の上動を規制するとともに、外蓋の持上
げを阻止し、また、ロツク部材を反内壁面側へ揺
動操作して前記内壁面から離隔させ、外蓋の施錠
状態を解錠するように構成したものである。(Function) The device of the present invention can swing vertically against the lower surface near the end of the outer cover of the manhole, and swings the locking member, which is pivoted so as to be able to come into contact with and separate from the inner wall surface of the frame pipe, toward the inner wall surface. The locking member is operated so that the swinging end is inscribed in the frame pipe, and when an upward pressing force is applied to the outer cover, the locking member is pressed into contact with the inner wall surface in a biting manner, and the swinging fulcrum of the locking member is pressed. The structure is configured to restrict the upward movement, prevent the outer cover from being lifted, and swing the locking member toward the side opposite to the inner wall surface to separate it from the inner wall surface, thereby unlocking the outer cover from the locked state. It is something.
(実施例)
次に、本考案の一実施例を図面にしたがつて説
明する。(Example) Next, an example of the present invention will be described with reference to the drawings.
マンホール用の枠管1はほぼ円筒状に形成され
てマンホールの上端で地中に埋設され、その内壁
面1aの上端付近には段差部4が周状に形成され
ている。 A frame pipe 1 for a manhole is formed into a substantially cylindrical shape and is buried underground at the upper end of the manhole, and a stepped portion 4 is formed in a circumferential manner near the upper end of the inner wall surface 1a.
円盤状の外蓋5はその周縁部が枠管1の段差部
4上に載置された状態で枠管1内の上端に対し上
方への取出し可能に嵌合支持され、その下面の端
部付近には外蓋5を枠管1に施錠するために枠管
1の内壁面1aに対置された施錠装置Sが装着さ
れている。なお、外蓋5には複数個、好ましくは
2〜4個の施錠装置が周方向に離隔して配設され
る。 The disk-shaped outer cover 5 is fitted and supported to the upper end of the frame tube 1 so that it can be taken out upwards with its peripheral edge placed on the stepped portion 4 of the frame tube 1, and its lower end A locking device S is installed near the inner wall surface 1a of the tube frame 1 in order to lock the outer cover 5 to the tube frame 1. It should be noted that a plurality of locking devices, preferably two to four locking devices, are arranged on the outer lid 5 so as to be spaced apart from each other in the circumferential direction.
各施錠装置Sの支持部材6は外蓋5の下面に並
着された上板6aと、この上板6aの下面に対し
並行状に垂下された左右の側板6b,6bとを備
えている。 The support member 6 of each locking device S includes an upper plate 6a attached to the lower surface of the outer lid 5, and left and right side plates 6b, 6b suspended in parallel to the lower surface of the upper plate 6a.
枠管1の内壁面1aに接離させるために支持部
材6に対し同支持部材6の中央部付近に横架され
た支軸7を介して上下方向への揺動動作可能に枢
支されて支持部材6の両側板6b間に狭装された
ロツク部材8はその厚さが先方に向つて漸増され
て重心が先端側に偏在するように形成され、その
後端付近には上下方および後方開放の凹欠部8a
が平面凵型状に凹欠されてこの凹欠部8aには係
合軸9が横架される一方、その先端面8bは円弧
面状に湾曲されて枠管1の内壁面1aとの摺接抵
抗を増大するためにローレツト面等の凹凸面状に
形成されている。そして、ロツク部材8の前部を
その自重で下方へ揺動させて枠管1の内壁面1a
に対接させるためにロツク部材8の揺動支点aは
ロツク部材8の重心の後方部位に配置されるとと
もに、ロツク部材8は外方に向つて上傾した姿勢
で先端面8bの下端付近の押止縁8cが枠管1の
内壁面1aに対接されてロツク部材8の下側揺動
端が規定される。また、枠管1の内壁面1aとロ
ツク部材8の押止縁8cとの接点bは揺動支点a
を通る水平線c上若しくはこの水平線cの若干上
方に配置されるとともに、ロツク部材8の先端面
8bはその円弧中心dが揺動支点aと接点bとを
結ぶ線分abの延長線上で揺動支点aの後方に配
置され、且つ、線分adの長さeに線分abの長さ
fを加えた長さe+fが曲率半径となるように設
定され、ロツク部材8の押止縁8cが枠管1の内
壁面1aに対接してロツク部材8が枠管1に内接
した状態ではロツク部材8の先端面8bの円弧動
半径が前記線分abの長さeより若干延長されて
いるため、ロツク部材8の下方への揺動動作が規
制されるとともに、外蓋5を持上げてロツク部材
8の揺動支点aを上動させる上動動作が阻止さ
れ、外蓋5が枠管1に嵌合された状態で施錠され
る。 In order to move it toward and away from the inner wall surface 1a of the frame tube 1, it is pivotally supported to the support member 6 via a support shaft 7 horizontally suspended near the center of the support member 6 so as to be able to swing in the vertical direction. The locking member 8, which is narrowly inserted between the side plates 6b of the supporting member 6, is formed so that its thickness gradually increases toward the front so that the center of gravity is unevenly distributed on the tip side, and there are vertical and rear openings near the rear end. recessed part 8a
is recessed into a planar shape, and the engagement shaft 9 is horizontally suspended in this recessed portion 8a, while its tip surface 8b is curved into an arcuate surface to prevent sliding with the inner wall surface 1a of the frame tube 1. It is formed with an uneven surface such as a knurled surface to increase the contact resistance. Then, the front part of the locking member 8 is swung downward by its own weight to lock the inner wall surface 1a of the frame tube 1.
The swinging fulcrum a of the lock member 8 is placed at the rear of the center of gravity of the lock member 8, and the lock member 8 is tilted upward toward the outside near the lower end of the distal end surface 8b. The retaining edge 8c is brought into contact with the inner wall surface 1a of the frame tube 1, thereby defining the lower swing end of the locking member 8. Further, the contact point b between the inner wall surface 1a of the frame tube 1 and the holding edge 8c of the locking member 8 is the swing fulcrum point a.
The distal end surface 8b of the locking member 8 swings with its arc center d on an extension of the line segment ab connecting the swinging fulcrum a and the contact point b. It is arranged behind the fulcrum a, and is set so that the length e+f, which is the sum of the length e of the line segment ad and the length f of the line segment ab, is the radius of curvature, and the retaining edge 8c of the locking member 8 is When the lock member 8 is inscribed in the frame tube 1 in opposition to the inner wall surface 1a of the frame tube 1, the radius of circular motion of the tip surface 8b of the lock member 8 is slightly longer than the length e of the line segment ab. Therefore, the downward swinging movement of the locking member 8 is restricted, and the upward movement of lifting the outer cover 5 and moving the swinging fulcrum a of the locking member 8 upward is prevented, so that the outer cover 5 It is locked when it is fitted.
ロツク部材8の揺動姿勢を変換操作するために
外蓋5に対し垂直状に貫挿されて支持部材6の上
板6aに貫設した通し孔12に遊挿された操作ボ
ルト10は、その下端に形成された断面逆U型状
の溝部11aがロツク部材8の係合軸9に係合さ
れて係合軸9上に立設された押え部材11に螺嵌
され、その頭部10aは外蓋5の上面に凹設され
た凹部5a内に対し回動操作可能に嵌入されると
ともに、支持部材6の上板6aの下側で操作ボル
ト10に係着されたスナツプリング13で操作ボ
ルト10の上下動が規制されていて、この操作ボ
ルト10を例えば時計方向へ回動したときには押
え部材11が螺進してロツク部材8の係合軸9と
ともに上動し、ロツク部材8を押止縁8cが枠管
1の内壁面1aに対接する下側揺動端まで自重で
内壁面1a側へ揺動させて枠管1に内接させ、外
蓋5を枠管1に嵌合した状態で施錠することがで
きる。一方、この状態で操作ボルト10を反時計
方向へ所定回数回動したときには押え部材11が
螺退してロツク部材8の係合軸9が下動した押え
部材11で押下げられ、ロツク部材8を反内壁面
側へ揺動させて押止縁8cが内壁面1aから離隔
した揺動姿勢に変換させ、枠管1に対する外蓋5
の施錠状態を解錠することができる。 An operation bolt 10 is loosely inserted into a through hole 12 that is vertically inserted into the outer cover 5 and penetrated through the upper plate 6a of the support member 6 in order to change the swinging posture of the lock member 8. A groove 11a formed at the lower end and having an inverted U-shaped cross section is engaged with the engagement shaft 9 of the locking member 8, and is screwed into the presser member 11 erected on the engagement shaft 9. The operating bolt 10 is secured to the operating bolt 10 by a snap spring 13 which is rotatably fitted into the recess 5a formed in the upper surface of the outer cover 5 and is engaged with the operating bolt 10 at the lower side of the upper plate 6a of the support member 6. When the operating bolt 10 is rotated, for example, clockwise, the holding member 11 spirals and moves upward together with the engagement shaft 9 of the locking member 8, pressing the locking member 8 against the holding edge. 8c is swung toward the inner wall surface 1a side by its own weight up to the lower swinging end that contacts the inner wall surface 1a of the frame tube 1, and is brought into contact with the frame tube 1, and with the outer cover 5 fitted to the frame tube 1. Can be locked. On the other hand, when the operating bolt 10 is rotated counterclockwise a predetermined number of times in this state, the holding member 11 is screwed back and the engaging shaft 9 of the locking member 8 is pressed down by the moving holding member 11, and the locking member 8 is The outer cover 5 relative to the frame tube 1 is swung toward the side opposite to the inner wall surface to change the holding edge 8c to a swinging posture separated from the inner wall surface 1a.
can be unlocked.
なお、外蓋5の端部付近下面にロツク部材8を
支持するために垂下された左右1対の側板を一体
状に形成して支持部材を付設してもよい。 It should be noted that a pair of left and right side plates may be integrally formed to support the lock member 8 on the lower surface near the end of the outer cover 5, and a supporting member may be attached thereto.
続いて、上記した構成をもつ実施例の作用と効
果を説明する。 Next, the operation and effects of the embodiment having the above configuration will be explained.
さて、本例ではマンホール用の枠管1内に嵌合
される外蓋5の端部付近下面に取着された支持部
材6には枠管1の内壁面1aに接離させるために
形成されたロツク部材8を自重による揺動動作可
能で内壁面1aに対接して揺動端が規定されるよ
うに枢支するとともに、ロツク部材8にはロツク
部材8の揺動姿勢を変換操作するために設けた操
作ボルト11を連繋してある。 Now, in this example, a support member 6 attached to the lower surface near the end of the outer cover 5 fitted into the frame pipe 1 for a manhole is formed in order to make it come into contact with and separate from the inner wall surface 1a of the frame pipe 1. The lock member 8 is pivotally supported so that it can swing under its own weight and its swing end is defined in contact with the inner wall surface 1a, and the lock member 8 has a mechanism for changing the swing posture of the lock member 8. An operating bolt 11 provided at the holder is connected to the operating bolt 11.
このため、操作ボルト11を正逆に回動操作し
てロツク部材8の揺動姿勢を容易に変換すること
ができ、枠管1に対する外蓋5の施錠操作および
解錠操作を簡易化して外蓋5を枠管1に対し容易
かつ的確に施錠しうるとともに、その施錠状態を
容易に解錠して外蓋5の取外し作業を簡便化し、
また、枠管1に対する施錠用の加工を排除しうる
効果がある。 Therefore, the swinging posture of the lock member 8 can be easily changed by rotating the operating bolt 11 in the forward and reverse directions, which simplifies the locking and unlocking operations of the outer cover 5 with respect to the frame tube 1. The lid 5 can be easily and accurately locked to the frame tube 1, and the locked state can be easily unlocked to simplify the removal work of the outer lid 5,
Further, there is an effect that locking processing for the frame tube 1 can be eliminated.
とくに、ロツク部材8が枠管1に内接して外蓋
5が施錠された状態では外蓋5に上方への押圧力
を加えてロツク部材8の揺動支点aを上方へ押圧
すると、ロツク部材8の押止縁8cが枠管1の内
壁面1aに対し喰込み状に圧接してロツク部材8
る揺動支点aを押上げる力が枠管1に対する側方
への押圧力に変換され、かつ、揺動支点を押上げ
る力の増強に伴つて揺動支点aの上動を阻止する
力が増強されるため、外蓋5の施錠状態を著しく
強化して外蓋5の強制的取外しを確実に防止する
ことができる。 In particular, when the lock member 8 is inscribed in the frame tube 1 and the outer cover 5 is locked, if an upward pressing force is applied to the outer cover 5 and the swinging fulcrum a of the lock member 8 is pressed upward, the lock member The retaining edge 8c of 8 presses against the inner wall surface 1a of the frame tube 1 in a biting manner, thereby locking the locking member 8.
The force that pushes up the swing fulcrum a is converted into a lateral pressing force on the frame tube 1, and as the force that pushes up the swing fulcrum increases, the force that prevents the swing fulcrum a from moving upward increases. Therefore, the locked state of the outer cover 5 can be significantly strengthened, and forced removal of the outer cover 5 can be reliably prevented.
また、ロツク部材8に対する揺動規制を解除し
たときにロツク部材8がその自重で施錠方向へ自
動的に揺動して枠管1に内接するため、外蓋5の
振動等に起因するロツク部材8の誤動作が排除さ
れてロツク部材8を施錠および解錠に際し的確に
作動させることができる。 Furthermore, when the rocking restriction on the locking member 8 is released, the locking member 8 automatically swings in the locking direction due to its own weight and comes into contact with the frame tube 1, so that the locking member 8 is prevented from being damaged due to vibrations of the outer cover 5, etc. 8 is eliminated, and the lock member 8 can be operated accurately when locking and unlocking.
(考案の効果)
すなわち、本考案はマンホール用の枠管内に嵌
合される外蓋の端部付近下面に設けた支持部材に
は前記枠管の内壁面に接離させるために形成され
たロツク部材を自重による揺動動作可能で前記内
壁面に対接して揺動端が規定されるように枢支す
るとともに、前記ロツク部材にはこのロツク部材
の揺動姿勢を変換操作するために設けた操作部材
を連繋したことによつて、枠管に対する施錠用の
加工を排除しうるとともに、外蓋の施錠状態を強
化しうる効果を有する。(Effect of the invention) That is, the present invention has a support member provided on the lower surface near the end of the outer cover fitted in the frame pipe for a manhole, which has a lock formed to allow it to come into contact with and separate from the inner wall surface of the frame pipe. The member is pivoted so that it can swing under its own weight and its swing end is defined in contact with the inner wall surface, and the lock member is provided with a structure for changing the swinging posture of the lock member. By linking the operating members, locking processing on the frame tube can be eliminated, and the locking state of the outer lid can be strengthened.
図面は本考案の一実施例を示すもので、第1図
は要部の縦断面図、第2図はマンホールの開口部
の縦断面図、第3図は施錠装置の分解斜視図であ
る。
1……枠管、1a……内壁面、5……外蓋、6
……支持部材、8……ロツク部材、10……操作
ボルト。
The drawings show an embodiment of the present invention; FIG. 1 is a vertical cross-sectional view of the main parts, FIG. 2 is a vertical cross-sectional view of the opening of a manhole, and FIG. 3 is an exploded perspective view of the locking device. 1...Frame tube, 1a...Inner wall surface, 5...Outer cover, 6
...Support member, 8...Lock member, 10...Operation bolt.
Claims (1)
付近下面に設けた支持部材には前記枠管の内壁面
に接離させるために形成されたロツク部材を自重
による揺動動作可能で前記内壁面に対接して揺動
端が規定されるように枢支するとともに、前記ロ
ツク部材にはこのロツク部材の揺動姿勢を変換操
作するために設けた操作部材を連繋したことを特
徴とするマンホール用外蓋のための施錠装置。 A support member provided on the lower surface near the end of the outer cover to be fitted into the manhole frame pipe has a lock member formed thereon for bringing it into contact with and separating from the inner wall surface of the frame pipe, and is capable of swinging movement by its own weight. The lock member is pivoted so that its swinging end is defined in opposition to the inner wall surface, and an operating member provided for changing the swinging posture of the lock member is linked to the lock member. Locking device for manhole outer cover.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986058031U JPH042205Y2 (en) | 1986-04-17 | 1986-04-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986058031U JPH042205Y2 (en) | 1986-04-17 | 1986-04-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62169043U JPS62169043U (en) | 1987-10-27 |
JPH042205Y2 true JPH042205Y2 (en) | 1992-01-24 |
Family
ID=30888263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986058031U Expired JPH042205Y2 (en) | 1986-04-17 | 1986-04-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH042205Y2 (en) |
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JP2021165465A (en) * | 2020-04-06 | 2021-10-14 | 株式会社淀川製鋼所 | Fitting lid for opening-forming structure |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100422573C (en) * | 2002-08-12 | 2008-10-01 | 大卫·M·斯塔德勒 | Locking device and method for catch basin and manhole covers |
JP2010031629A (en) * | 2008-06-27 | 2010-02-12 | Chubu Corporation | Grating fixture |
DE102018122167A1 (en) * | 2018-09-11 | 2020-03-12 | ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft | Height-adjustable drainage channel |
JP7370797B2 (en) * | 2019-10-09 | 2023-10-30 | 株式会社淀川製鋼所 | Fixed opening lid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5319789Y2 (en) * | 1974-10-17 | 1978-05-25 | ||
JPS59190856U (en) * | 1983-06-02 | 1984-12-18 | 日之出水道機器株式会社 | Locking structure for underground structure lids |
JPS60169345U (en) * | 1984-04-14 | 1985-11-09 | 株式会社ホクキャスト | Manhole cover locking device |
-
1986
- 1986-04-17 JP JP1986058031U patent/JPH042205Y2/ja not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021139105A (en) * | 2020-03-02 | 2021-09-16 | 株式会社淀川製鋼所 | Ditch cover |
JP2021165465A (en) * | 2020-04-06 | 2021-10-14 | 株式会社淀川製鋼所 | Fitting lid for opening-forming structure |
Also Published As
Publication number | Publication date |
---|---|
JPS62169043U (en) | 1987-10-27 |
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