JPH0316900Y2 - - Google Patents
Info
- Publication number
- JPH0316900Y2 JPH0316900Y2 JP11450185U JP11450185U JPH0316900Y2 JP H0316900 Y2 JPH0316900 Y2 JP H0316900Y2 JP 11450185 U JP11450185 U JP 11450185U JP 11450185 U JP11450185 U JP 11450185U JP H0316900 Y2 JPH0316900 Y2 JP H0316900Y2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- cylinder
- locking
- lid
- hook
- 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
- 230000035939 shock Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案はマンフオール蓋の施錠装置に関するもの
である。[Detailed Description of the Invention] "Field of Industrial Application" The present invention relates to a locking device for a manhole lid.
「従来の技術」
従来のマンフオール蓋の施錠装置、例えば実公
昭59−20435号は、第１３図に示す如く、マンフ
オールの受枠６０の内側上面に固着したナツト部
６１に、蓋体６３の周縁部分に上下方向に取付け
た複数のボルト６４を螺着させて着脱可能に固着
し、蓋体６３を受枠６０に固定させることにより
車両通行時の蓋体６３のガタツキを防止したり、
該蓋体が受枠から脱出するのを防止している。し
かるに蓋体６３の上を重量のある車両が通行する
際のシヨツクは直接ボルト６４とナツト部６１と
の螺着部分に作用するため、経時的に螺合部分が
摩耗して弛んでしまい、ボルトがナツト部６１よ
り抜け落ちて蓋体３３が受枠６０から脱出した
り、或は侵入者により容易にマンフオール内に侵
入されてしまう欠点があつた。この場合、６５は
公知のシリンダ錠で、外部からボルト６４の回動
を防止するためのものである。``Prior Art'' As shown in FIG. 13, a conventional manifold lid locking device, for example, Utility Model Publication No. 59-20435, locks a peripheral portion of the lid body 63 into a nut portion 61 fixed to the inner upper surface of a receiving frame 60 of the manifold. A plurality of bolts 64 installed in the vertical direction are screwed into the housing to removably fix the lid body 63 to the receiving frame 60, thereby preventing the lid body 63 from rattling when a vehicle passes.
This prevents the lid from escaping from the receiving frame. However, when a heavy vehicle passes over the lid 63, the shock directly acts on the threaded part between the bolt 64 and the nut part 61, so the threaded part wears out and loosens over time, causing the bolt to become loose. However, there is a drawback that the cover body 33 may fall off from the nut portion 61 and escape from the receiving frame 60, or it may be easily penetrated into the manhole by an intruder. In this case, 65 is a well-known cylinder lock for preventing the bolt 64 from rotating from the outside.
「考案が解決しようとする問題点」
本考案は蓋体に装着した施錠手段が受枠に直接
係合しないようにし、車両通行時の蓋体に生ずる
シヨツクにより該施錠手段に存する螺合部分が経
時的に摩耗して劣化するのを防止し、耐久性を高
めるものである。``Problems to be solved by the invention'' This invention prevents the locking means attached to the lid body from directly engaging the receiving frame, and the threaded portion of the locking means is damaged over time by the shock that occurs on the lid body when a vehicle passes. This prevents physical wear and deterioration and increases durability.
「問題点を解決するための手段」
本考案は上述の如き欠点に鑑み、車両通行時の
際に施錠手段に衝撃を与えないようにすると共
に、この施錠装置の構造を簡略化し、施錠を確実
にすることを目的とするもので、その構成は中心
を通る直線上に位置させてフツク受部と係止部と
をそれぞれ内面に設けた受枠に、着脱可能に被蓋
させる蓋体に通孔を設け、この蓋体の裏面一方に
前記フツク受部に掛止するフツクを設けると共
に、前記通孔に合致させて蓋体の裏面に取付ける
基体の上下にはそれぞれ筒体と下部筒とを直接状
に固着し、この下部筒の壁面には周方向に略１／
４円周の細巾に設けた案内溝の左端に一段低く形
成した凹入部を前記係止部に対向させて設け、上
記筒体及び下部筒内に回動可能に挿通した作動ボ
ルトの頭部にはボルト回動用の凹部を有し、且つ
該ボルトの回動を防止するシリンダー錠を収容す
る収容室を設け、また、下部外周に設けた逆ねじ
部に前記係止片固定用のリングを挿通させると共
に後端を回動可能に螺合させた係合片の先端を前
記案内溝から外方に突出し、この作動ボルトの下
端には前記下部筒の下面に当接する底板を固着
し、前記収容室内にボルト頭部と係脱可能に係合
してボルト回動防止用のシリンダー錠を収容し、
且つ上記筒体にキヤツプを螺着させることを特徴
とする。"Means for Solving the Problems" In view of the above-mentioned drawbacks, the present invention aims to prevent impact from being applied to the locking means when a vehicle passes by, and to simplify the structure of this locking device to ensure secure locking. Its structure is such that it is located on a straight line passing through the center and has a hook receiving part and a locking part on its inner surface, and a through hole in the lid that is removably covered. A hook is provided on one of the back surfaces of the lid body to be hooked to the hook receiving portion, and a cylindrical body and a lower cylinder are directly attached to the top and bottom of the base body, which is attached to the back surface of the lid body in alignment with the through hole. The wall surface of this lower cylinder is fixed to approximately 1/2 inch in the circumferential direction.
4. A recessed part formed one step lower at the left end of a guide groove provided in a narrow circumference is provided opposite to the locking part, and the head of the operating bolt is rotatably inserted into the cylinder and the lower cylinder. The housing has a concave portion for rotating the bolt and a housing chamber for accommodating a cylinder lock that prevents the bolt from rotating, and a ring for fixing the locking piece is attached to a reverse threaded portion provided on the outer periphery of the lower part. The distal end of the engagement piece, which is inserted through the engagement piece and whose rear end is rotatably screwed together, projects outward from the guide groove, and a bottom plate that comes into contact with the lower surface of the lower cylinder is fixed to the lower end of the operating bolt. A cylinder lock is housed in the housing chamber to releasably engage the bolt head to prevent the bolt from rotating.
Further, a cap is screwed onto the cylindrical body.
「作用」
フツクをフツク受部に係合して蓋体を被蓋し、
回動工具によつて作動ボルトを回転させることに
より係合片を周方向に回動させて受枠に設けた係
止部片に間隔を存して掛止するので、蓋体に生ず
る衝撃は伝わらない。"Operation" Engage the hook with the hook receiving part to cover the lid body,
By rotating the operating bolt with a rotating tool, the engaging piece is rotated in the circumferential direction and is latched to the locking piece provided on the receiving frame at a certain interval, so that the impact generated on the lid body is not transmitted. do not have.
「実施例」
本考案の実施例を図面により説明すると、方形
に形成した基体２の中央に上下方向に通孔４を設
け、該通孔の略中間部に設けた段部３を介して上
方に大径な螺条孔５を設け、更にこの基体２の両
側に取付孔６，６を各々設ける。１０は基体２の
螺条孔５に固着させる筒体で、上部内面にねじ溝
１１ａ、下部外面にねじ溝１１ｂをそれぞれ設
け、このねじ溝１１ａを前記螺条孔５に螺着させ
る。１２は基体の通孔４と同心状に該基体の下面
に設けた環状溝１２ａに嵌合固着させる下部筒
で、中間部の側面に周方向に細溝状の案内溝１３
を略90度、即ち1/4円周部分に形成し、この案内
溝１３の左端部分には掛止段部１４を介して凹入
部１５を形成してある。１６は作動ボルトで、上
部にはやや大径な頭部１７を設け、下部外周には
逆ねじ部１８を形成してある。この頭部１７内に
は公知のシリンダ錠６５を収容する収容室１９を
形成し、且つこの収容室の底面には作動ボルトを
回動させるレンチ等の回転工具を係合する凹部２
０を設けてある。``Embodiment'' To explain an embodiment of the present invention with reference to the drawings, a through hole 4 is provided vertically in the center of a rectangular base 2, and an upper A large diameter threaded hole 5 is provided in the base body 2, and mounting holes 6 are provided on both sides of the base body 2, respectively. A cylindrical body 10 is fixed to the threaded hole 5 of the base body 2. A threaded groove 11a is provided on the inner surface of the upper part and a threaded groove 11b is provided on the outer surface of the lower part, and the threaded groove 11a is screwed into the threaded hole 5. Reference numeral 12 denotes a lower cylinder which is fitted into and fixed to an annular groove 12a provided on the lower surface of the base body concentrically with the through hole 4 of the base body, and has a narrow guide groove 13 in the circumferential direction on the side surface of the intermediate part.
is formed at approximately 90 degrees, that is, 1/4 circumferential portion, and a recessed portion 15 is formed at the left end portion of this guide groove 13 via a locking step portion 14. Reference numeral 16 denotes an operating bolt, which has a slightly larger diameter head 17 at its upper part and a reverse threaded part 18 at its lower outer periphery. A housing chamber 19 for housing a known cylinder lock 65 is formed in the head 17, and a recess 2 for engaging a rotary tool such as a wrench for rotating an operating bolt is formed on the bottom surface of this housing chamber.
0 is set.
尚、収容室１９の内面にはシリンダ錠６５が掛
止する凹溝２３を設けてある。この作動ボルト１
６を基体２の通孔４内に挿通させると、頭部１７
は筒体１０内に位置し、更に収容室１９内に公知
シリンダ錠６５を収容した後、ねじ溝１１ａにキ
ヤツプ２４を螺着して、筒体１０の上面を閉鎖す
るものである。下部筒１２内に挿通させた作動ボ
ルト１６の逆ねじ部１８にはリング２５を挿通
し、次いで係止片２６の後部に設けた螺孔２７を
螺通させると共に、該係止片は上記案内溝１３を
貫通して外方に突出させてあり、更に、この作動
ボルト１６の下端には前記下部筒１２の下端と係
止する底板２１をねじ２２で固着させる。尚、係
止片の基部に設けた細巾部２８は前記案内溝の下
面に設けた凹入部１５に係合するようにしてあ
る。 Incidentally, the inner surface of the storage chamber 19 is provided with a groove 23 into which a cylinder lock 65 is engaged. This operating bolt 1
6 is inserted into the through hole 4 of the base 2, the head 17
is located inside the cylindrical body 10, and after accommodating a known cylinder lock 65 in the housing chamber 19, the cap 24 is screwed into the threaded groove 11a to close the top surface of the cylindrical body 10. The ring 25 is inserted into the reverse threaded portion 18 of the actuating bolt 16 inserted into the lower cylinder 12, and is then screwed through the screw hole 27 provided at the rear of the locking piece 26. It penetrates the groove 13 and protrudes outward, and furthermore, a bottom plate 21 that engages with the lower end of the lower cylinder 12 is fixed to the lower end of the operating bolt 16 with screws 22. The narrow portion 28 provided at the base of the locking piece is adapted to engage with the recessed portion 15 provided on the lower surface of the guide groove.
３０は蓋体３５の周縁部に設けた錠取付孔３６
と該蓋の中心を通る直線３１上で、且つ周縁部分
の下面に一体又は別体に固定して設けたＬ型のフ
ツクで、受枠３２の内面で、且つ前記係止片２６
と係止する係止部３３と対称位置にはフツク受部
３４を設けてある。図中、１は施錠装置である。 30 is a lock mounting hole 36 provided at the peripheral edge of the lid body 35
An L-shaped hook is provided on the straight line 31 that passes through the center of the lid, and is fixed integrally or separately to the lower surface of the peripheral portion, and is located on the inner surface of the receiving frame 32 and on the locking piece 26.
A hook receiving portion 34 is provided at a position symmetrical to the locking portion 33 that locks with. In the figure, 1 is a locking device.
４０は第２実施例の受枠を示したもので、係止
部４１を該受枠と一体に形成してある。 Reference numeral 40 indicates a receiving frame of the second embodiment, and a locking portion 41 is formed integrally with the receiving frame.
次に、本実施例の作用について説明すると、蓋
体３５を受枠３２に係合させて施錠するには、先
ず、蓋体３５を斜めにしてＬ型のフツク３０をフ
ツク受３４に係止し、次いで、蓋体３５を水平に
して該蓋体を受枠３２上の棚部３２ａに載置した
後、レンチ等の回動工具（図示せず）の下端を作
動ボルト１６の上部の収容室内に存する凹部２０
に嵌合させて該レンチを時計方向に回動させる
と、この作動ボルトの逆ねじ部１７に螺合する係
止片２６は摩擦抵抗により該作動ボルト１６と同
体に第３図矢印Ａ方向に90度回転して案内溝１３
の端部に当接した後、該作動ボルト１６の回動に
従つて逆ねじ部に沿つて降下し、この係止片の細
巾部２８が凹入部１５に係合し、更に作動ボルト
の回転により、下部筒１２の下端に当接する底板
２１と逆ねじ部１８に螺合した係止片２６とで下
部筒１２の凹入部１５の部分を上下方向に強固に
狭持するため、該作動ボルト１８に少し位のシヨ
ツクが加わつても弛むことはないし、たとえ、作
動ボルト１６がシヨツクにより反時計方向に逆回
転しても、この係止片２６の側面が掛止段部１４
に掛止されているため、第３図反矢印Ａ方向に回
動することはないものである。 Next, to explain the operation of this embodiment, in order to engage and lock the lid 35 with the receiving frame 32, first, the lid 35 is tilted and the L-shaped hook 30 is locked with the hook holder 34. Next, after making the lid 35 horizontal and placing it on the shelf 32a on the receiving frame 32, the lower end of a rotating tool (not shown) such as a wrench is inserted into the accommodation chamber above the actuating bolt 16. recess 20
When the wrench is rotated clockwise, the locking piece 26 screwed into the reverse threaded portion 17 of the operating bolt is rotated together with the operating bolt 16 in the direction of arrow A in FIG. 3 due to frictional resistance. Rotate 90 degrees and guide groove 13
As the actuating bolt 16 rotates, it descends along the reverse threaded part, and the narrow part 28 of this locking piece engages with the recessed part 15, and then the actuating bolt's Due to the rotation, the recessed part 15 of the lower cylinder 12 is firmly held in the vertical direction by the bottom plate 21 that contacts the lower end of the lower cylinder 12 and the locking piece 26 screwed into the reverse threaded part 18, so that the operation is performed. Even if a small amount of shock is applied to the bolt 18, it will not loosen, and even if the operating bolt 16 is rotated counterclockwise by the shock, the side surface of this locking piece 26 will close to the locking step 14.
Since it is latched to, it will not rotate in the opposite direction of arrow A in FIG.
次いで、回動工具の下端を凹部２０から取り出
し、公知のシリンダ錠６５を収容室１９内に収容
して、凹入溝２３に掛止させて施錠すれば、この
作動ボルト１６を蓋体３５の上方から回動させる
ことは出来ない。その後、この収容室の上部内面
に設けたねじ溝１１ａにキヤツプ２４を螺着させ
れば、この収容室１９内へのゴミや雨水の浸入を
防止できる。更に又、施錠装置を開錠して蓋体３
５を受枠３２から取り外すには、先ず、キヤツプ
２４をねじ溝１１ａから取り外し、次いでシリン
ダー錠６５を開錠して収容室１９内から取り出
す。その後、回動工具の下部を収容室内の凹部２
０に係合し、この作動ボルト１６を反時計方向に
回動すれば、係止片２６は掛止段部１４に係止し
ているので回動できず、逆ねじ部１８に沿つて上
昇するが、この係止片２６と基体２の下面との間
にはリング２５を遊嵌させてあるので、該係止片
２６はリング２５を介して基体２の下面に押圧し
て係止片のそれ以上の上昇を停止すると共に作動
ボルトと一体化し、この逆ねじ部と一体に該作動
ボルト１６の回動方向、即ち、第３図反矢印Ａ方
向に案内溝１３内に沿つて約90度回動し、係止部
３３との掛止を解消するため、該蓋体３５は受枠
３２から容易に取り外すことが出来るものであ
る。 Next, the lower end of the rotary tool is taken out from the recess 20, a known cylinder lock 65 is accommodated in the storage chamber 19, and the cylinder lock 65 is hooked into the recessed groove 23 and locked. It cannot be rotated from above. Thereafter, by screwing the cap 24 into the screw groove 11a provided on the inner surface of the upper part of the storage chamber, it is possible to prevent dirt and rainwater from entering into the storage chamber 19. Furthermore, the locking device is unlocked and the lid body 3 is closed.
5 from the receiving frame 32, first, the cap 24 is removed from the screw groove 11a, and then the cylinder lock 65 is unlocked and taken out from the storage chamber 19. Then, insert the lower part of the rotary tool into the recess 2 in the storage chamber.
0 and if this operating bolt 16 is rotated counterclockwise, the locking piece 26 cannot be rotated because it is locked to the locking step 14 and will rise along the reverse threaded portion 18. However, since the ring 25 is loosely fitted between the locking piece 26 and the lower surface of the base 2, the locking piece 26 is pressed against the lower surface of the base 2 via the ring 25, and the locking piece 26 is pressed against the lower surface of the base 2 through the ring 25. It stops the further rise of the actuating bolt 16 and is integrated with the reverse threaded portion of the actuating bolt 16 in the rotating direction of the actuating bolt 16, that is, in the opposite direction of arrow A in FIG. The cover body 35 can be easily removed from the receiving frame 32 by rotating the cover body 35 to release the engagement with the locking part 33.
「考案の効果」
以上の如き本考案は以下のような効果を有す
る。"Effects of the invention" The invention as described above has the following effects.
施錠装置の係止片と受枠の係止部とは密着せ
ずに掛止するため、蓋体の上部を車両通行の際
の衝撃は受枠には伝わらず、この係止片と作動
ボルトの螺合部分の耐久性が一段と向上する。 Since the locking piece of the locking device and the locking part of the receiving frame are not in close contact with each other, the shock caused by a vehicle passing on the top of the lid is not transmitted to the receiving frame, and the locking piece and the thread of the operating bolt are The durability of the joint is further improved.
この作動ボルトの逆ねじ部に螺合させた係合
片とこの作動ボルトの下端に固着した底板とで
下部筒に存する案内溝の一部をなす凹入部を強
固に上下方向から狭持するので、少し位の外力
が加わつても、係止片が弛むことはない。 The engagement piece screwed into the reverse threaded portion of the actuating bolt and the bottom plate fixed to the lower end of the actuating bolt firmly hold the recess that forms part of the guide groove in the lower cylinder from above and below. Even if a small amount of external force is applied, the locking piece will not loosen.
蓋体に存する通孔にこの施錠装置を簡単に装
着できるので、既存のマンフオールの蓋体に簡
単に取付けることが出来る。 Since this locking device can be easily attached to the through hole in the lid, it can be easily attached to the lid of an existing manifold.
一つのフツクと一つの施錠装置とで蓋体を受
枠に施錠して取付けるため、著るしいコストダ
ウンを図ることができるし、取付個所が少ない
ので作業能率が向上する。 Since the lid body is locked and attached to the receiving frame using one hook and one locking device, it is possible to achieve a significant cost reduction, and since there are fewer attachment points, work efficiency is improved.
マンフオールの蓋体を施錠することにより、
マンフオール内の光フアイバーやケーブルから
の情報漏れを防止することが出来る。 By locking the manfoor lid,
It is possible to prevent information leakage from optical fibers and cables inside the manifold.
図面は本考案の実施例を示すもので、第１図は
使用状態を示す一部欠載した断面図、第２図は施
錠装置の取付状態を示す一部破断した正面図、第
３図は同平面図、第４図は基体の縦断面図、第５
図は一部破断した筒体の正面図、第６図は作動ボ
ルトと底板を固着した断面図、第７図は下部筒の
正面図、第８図は第７図Ａ−Ａ線断面図、第９図
は係止片の平面図、第１０図は第１図Ｂ−Ｂ線断
面図、第１１図はマンフオール全体の平面図、第
１２図は第２実施例の要部断面図、第１３図は従
来例を示す要部断面図である。
１……施錠装置、２……基体、１０……筒体、
１１ａ，１１ｂ……ねじ溝、１２……下部筒、１
３……案内溝、１５……凹入部、１６……作動ボ
ルト、１８……逆ねじ部、１９……収容室、２０
……凹部、２１……底板、２６……係止片、３０
……フツク、３２……受枠、３３……係止部、３
４……フツク受部、３５……蓋体。
The drawings show an embodiment of the present invention; Fig. 1 is a partially cutaway sectional view showing the state in use, Fig. 2 is a partially cutaway front view showing the locking device installed state, and Fig. The same plan view, FIG. 4 is a longitudinal sectional view of the base, and FIG.
The figure is a partially broken front view of the cylinder, Figure 6 is a cross-sectional view of the operating bolt and bottom plate fixed together, Figure 7 is a front view of the lower cylinder, Figure 8 is a cross-sectional view taken along the line A-A in Figure 7, FIG. 9 is a plan view of the locking piece, FIG. 10 is a sectional view taken along the line B-B in FIG. 1, FIG. 11 is a plan view of the entire manhole, and FIG. FIG. 13 is a sectional view of a main part showing a conventional example. 1... Locking device, 2... Base body, 10... Cylindrical body,
11a, 11b...Thread groove, 12...Lower cylinder, 1
3... Guide groove, 15... Recessed part, 16... Operating bolt, 18... Reverse threaded part, 19... Accommodation chamber, 20
... recess, 21 ... bottom plate, 26 ... locking piece, 30
... Hook, 32 ... Receiving frame, 33 ... Locking part, 3
4... Hook receiving part, 35... Lid body.
Claims (1)
止部とをそれぞれ内面に設けた受枠に、着脱可能
に被蓋させる蓋体に通孔を設け、この蓋体の裏面
の一方に前記フツク受部に掛止するフツクを設け
ると共に、前記通孔に合致させて蓋体の裏面に取
付ける基体の上下にはそれぞれ筒体と下部筒とを
直線状に固着し、この下部筒の壁面には周方向に
略1/4円周の細巾に設けた案内溝の左端に一段低
く形成した凹入部を前記係止部に対向させて設
け、上記筒体及び下部筒内に回動可能に挿通した
作動ボルトの頭部にはボルト回動用の凹部を有
し、且つ該ボルトの回動を防止するシリンダー錠
を収容する収容室を設け、また、下部外周に設け
た逆ねじ部に前記係止片固定用のリングを挿通さ
せると共に後端を回動可能に螺合させた係止片の
先端を前記案内溝から外方に突出し、この作動ボ
ルトの下端には前記下部筒の下面に当接する底板
を固着し、前記収容室内ボルト頭部と係脱可能に
係合してボルト回動防止用のシリンダー錠を収容
し、且つ上記筒体にキヤツプを螺着させて成るマ
ンフオール蓋の施錠装置。 A receiving frame is positioned on a straight line passing through the center and has a hook receiving part and a locking part on its inner surface, and a through hole is provided in a lid body that is removably covered, and the hook is attached to one side of the back side of this lid body. In addition to providing a hook to be hooked to the receiving part, a cylinder body and a lower cylinder are fixed in a straight line to the upper and lower parts of the base body, which is attached to the back surface of the lid body in alignment with the through hole, and the wall surface of this lower cylinder is fixed. A recessed part formed one step lower at the left end of a guide groove with a narrow width of approximately 1/4 circumference in the circumferential direction is provided opposite to the locking part, and is rotatably inserted into the cylinder body and the lower cylinder. The head of the operating bolt has a recess for bolt rotation, and is provided with a housing chamber for accommodating a cylinder lock that prevents rotation of the bolt, and the locking is provided in a reverse threaded portion provided on the outer periphery of the lower part. The tip of the locking piece, which has a ring for fixing the piece inserted therethrough and whose rear end is rotatably screwed together, protrudes outward from the guide groove, and the lower end of the operating bolt contacts the lower surface of the lower cylinder. A locking device for a manifold lid, comprising a bottom plate fixed to the housing chamber, a cylinder lock for preventing rotation of the bolt being removably engaged with the bolt head in the storage chamber, and a cap screwed onto the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11450185U JPH0316900Y2 (en) | 1985-07-27 | 1985-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11450185U JPH0316900Y2 (en) | 1985-07-27 | 1985-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6226457U JPS6226457U (en) | 1987-02-18 |
| JPH0316900Y2 true JPH0316900Y2 (en) | 1991-04-10 |
Family
ID=30997294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11450185U Expired JPH0316900Y2 (en) | 1985-07-27 | 1985-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0316900Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344364A (en) * | 2004-06-02 | 2005-12-15 | Miwa Lock Co Ltd | Lock cover for manhole cover |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH057243Y2 (en) * | 1989-10-09 | 1993-02-24 | ||
| JP4636481B2 (en) * | 2001-07-26 | 2011-02-23 | ジャパンライフ株式会社 | Manhole cover locking mechanism |
-
1985
- 1985-07-27 JP JP11450185U patent/JPH0316900Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344364A (en) * | 2004-06-02 | 2005-12-15 | Miwa Lock Co Ltd | Lock cover for manhole cover |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6226457U (en) | 1987-02-18 |
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