JPH0219435Y2 - - Google Patents
Info
- Publication number
- JPH0219435Y2 JPH0219435Y2 JP1985028739U JP2873985U JPH0219435Y2 JP H0219435 Y2 JPH0219435 Y2 JP H0219435Y2 JP 1985028739 U JP1985028739 U JP 1985028739U JP 2873985 U JP2873985 U JP 2873985U JP H0219435 Y2 JPH0219435 Y2 JP H0219435Y2
- Authority
- JP
- Japan
- Prior art keywords
- engagement
- fall prevention
- holes
- prevention frame
- wall
- 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
- 230000002265 prevention Effects 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はマンホール等地下構造物における転落
防止枠の着脱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 device for attaching and detaching a fall prevention frame in an underground structure such as a manhole.
（従来技術）
例えば貯水槽のマンホールなどでは内部にホー
スを挿し入れることが多々あるが、転落防止のた
めマンホール開口に取付けた転落防止枠がそのホ
ースと抵触し、ホースを引抜くときに外れて中に
落下してしまう問題があつた。これに対し、実行
昭58−53334号のものは、縦溝に続く横溝とその
先の凹所に係合する３個の係止片を転落防止枠に
突設しているため、持ち上げようとしても横溝の
上面に引掛り、外れ難い構造を有する。(Prior art) For example, a hose is often inserted into a manhole of a water tank, etc., but the fall prevention frame attached to the manhole opening to prevent falls comes into contact with the hose, and when the hose is pulled out, it comes off. I had a problem with it falling inside. On the other hand, the one of No. 58-53334 has three locking pieces protruding from the fall prevention frame that engage with the horizontal groove following the vertical groove and the recess beyond that, so if you try to lift it, It also has a structure in which it is caught on the upper surface of the horizontal groove and is difficult to come off.
（技術的課題）
しかし、前記の考案の場合、３個の係止片が円
周上に散らばつて設けられているため、３箇所を
同時に縦溝に合せない限り取り付けられないか、
不完全に取り付けられてしまう虞れがある。また
縦溝へ嵌めてから枠全体を回す必要があるから同
公報中にも記載されているように取り外しが面倒
であり、その反面確実性に乏しい欠点もある。(Technical problem) However, in the case of the above-mentioned device, the three locking pieces are scattered around the circumference, so it cannot be installed unless the three places are aligned with the vertical groove at the same time.
There is a risk that it may be installed incompletely. Furthermore, since it is necessary to fit the frame into the vertical groove and then turn the entire frame, it is troublesome to remove the frame, as described in the same publication, and on the other hand, there is also the drawback that it is not reliable.
そこで本考案は、転落防止枠をマンホール等地
下構造物の口部の内側壁の係合穴に抜出不能に係
合させるに当り、片側の係合穴に奥深い袋穴部を
設けて装着を容易化するとともに、装着状態では
枠が外れないずれ止め機構を設け、該機構を操作
して着脱を行なうようにした、操作し易く確実性
の高い地下構造物用転落防止枠の着脱装置を提供
するものである。 Therefore, in the present invention, when the fall prevention frame is irremovably engaged with the engagement hole in the inner wall of the mouth of an underground structure such as a manhole, a deep blind hole is provided in the engagement hole on one side. Provided is an easy-to-operate and highly reliable attachment/detachment device for a fall prevention frame for an underground structure, which is easy to operate and has a mechanism to prevent the frame from coming off when it is attached, and the mechanism is operated to attach and detach. It is something to do.
（技術的手段）
前記目的は、地下構造物の口部１に装着する転
落防止枠２の両端係合杆部３，４，３′，４′を抜
出不能に係合させる係合穴５，６，５′，６′を口
部１の内側壁に形成し、各係合杆部３，４と３′，
４′の間の長さを、係合穴５，６，５′，６′との
係合にのみ必要な長さに設定し、転落防止枠２の
着脱の為係合杆部の一方３，３′を一時的に一方
の係合穴５，５′より奥へ挿入することができる
袋穴部７，７′を一方の係合穴５，５′の側方に連
続して設け、装着後係合杆３，３′に係合し、そ
れらが袋穴部７，７′に移動するのを防止するず
れ止め機構８を設けた構成により達せられる。(Technical Means) The purpose is to provide an engaging hole 5 that irremovably engages the engaging rods 3, 4, 3', 4' at both ends of the fall prevention frame 2 attached to the mouth 1 of the underground structure. , 6, 5', 6' are formed on the inner wall of the mouth part 1, and each engaging rod part 3, 4 and 3',
4' is set to a length necessary only for engagement with the engagement holes 5, 6, 5', and 6', and one of the engagement rod parts 3 is set for attaching and detaching the fall prevention frame 2. , 3' are provided continuously on the side of one of the engagement holes 5, 5', through which blind holes 7, 7' can be temporarily inserted deeper than one of the engagement holes 5, 5', This is achieved by providing a mechanism 8 for preventing slippage, which engages the engagement rods 3, 3' after installation and prevents them from moving into the blind holes 7, 7'.
（実施例）
図示実施例はマンホール鉄蓋について本考案を
実施したもので、９は蓋体、１０はそれを受ける
枠体で円形の口部１を有する。実施例における転
落防止枠２は、一対の縦杆１１，１２と一対の横
杆１３，１４を人の転落の防止が可能な略井桁状
に組合せてあり、各杆で囲まれた部分がホースＨ
の挿通口１５である。各縦杆１１，１２は両端に
夫々係合杆部３，３′，４，４′を有し、各杆部
３，４，３′，４′が口部１の内側壁に凹設した係
合部５，６，５′，６′に係合する。(Embodiment) In the illustrated embodiment, the present invention is applied to a manhole iron cover, in which 9 is a cover body, 10 is a frame body for receiving the cover body, and has a circular opening 1. The fall prevention frame 2 in the embodiment has a pair of vertical bars 11, 12 and a pair of horizontal bars 13, 14 combined in a substantially cross-shaped structure that can prevent people from falling, and the portion surrounded by each bar is a hose. H
This is the insertion opening 15. Each vertical rod 11, 12 has an engaging rod portion 3, 3', 4, 4' at both ends, and each rod portion 3, 4, 3', 4' is recessed in the inner wall of the mouth portion 1. It engages with the engaging portions 5, 6, 5', 6'.
而して各縦杆１１，１２の長さは、係合部５，
６，５′，６′における内側壁の間隔より係合杆部
３，４，３′，４′の分だけ長いため、一方の係合
穴５，５′の側方に奥の深い袋穴部７，７′を形成
し、着脱の際転落防止枠２を袋穴部７，７′の奥
へ移動させることにより、他端係合杆部４，４′
が他方の係合穴６，６′から外れ、内側壁と抵触
せずに取付け取外しが行なえる構成を有し、更に
その転落防止枠２の深い袋穴部７，７′への移動
を着脱時にのみ行うためずれ止め機構８を設けて
いる。尚、１６，１７，１８，１９は突部で、各
係合部５，６，５′，６′及び袋穴部７，７′を設
けたため枠体１０の外側に突出した部分である。 Therefore, the length of each vertical rod 11, 12 is the length of the engaging portion 5,
Since the engaging rod portions 3, 4, 3', 4' are longer than the distance between the inner walls at 6, 5', 6', there is a deep blind hole on the side of one of the engaging holes 5, 5'. By forming portions 7, 7' and moving the fall prevention frame 2 to the depths of the blind hole portions 7, 7' during attachment and detachment, the other end engaging rod portions 4, 4'
is detached from the other engagement hole 6, 6' and can be attached and detached without coming into contact with the inner wall, and furthermore, the fall prevention frame 2 can be attached and detached by moving into the deep blind hole part 7, 7'. A slip prevention mechanism 8 is provided because this is performed only occasionally. Incidentally, reference numerals 16, 17, 18, and 19 are protrusions, which protrude to the outside of the frame 10 because the engaging portions 5, 6, 5', and 6' and the blind hole portions 7 and 7' are provided.
ずれ止め機構８は第３図の例では口内袋穴部７
における内側壁から内方へ突設した突部２０に形
成したピン孔２１と、このピン孔２１に係入され
る頭部２２ａを有するずれ止めピン２２とから成
り、ピン２２は係合状態で係合杆部３を係合部５
内に規定する（第２図）。２２′はそのピンをボル
トにしたものでナツト２３により突部２０に固定
し、外部から抜取られるのを防止する。第４図の
例は係合中の縦杆１１に上から掛止する鉤部２４
を有するずれ止め部材２５を口部１の内側壁に軸
２６により軸支したもの、また第５図は係合中の
縦杆１１の上角を掛止する鉤部２７を持つたずれ
止め部材２８を軸２９により軸支したものであ
る。 In the example shown in FIG. 3, the anti-slip mechanism 8
It consists of a pin hole 21 formed in a protrusion 20 protruding inwardly from the inner wall of the holder, and a stopper pin 22 having a head 22a that is inserted into the pin hole 21, and the pin 22 is in an engaged state. The engaging rod part 3 is connected to the engaging part 5
(Figure 2). Reference numeral 22' is a bolt made from the pin, which is fixed to the protrusion 20 with a nut 23 to prevent it from being pulled out from the outside. The example shown in FIG.
A slip-preventing member 25 with a shaft 26 is pivotally supported on the inner wall of the mouth portion 1, and FIG. 28 is pivotally supported by a shaft 29.
上記において、蓋体９を取除いたマンホールの
口部１に、転落防止枠２の係合杆部をまずその一
方３，３′から袋穴部７，７′に挿入し、奥まで押
し込むと他端係合杆部４，４′が他方の係合穴６，
６′近くの内壁と抵触しなくなるので、この係合
杆部４，４′を係合穴６，６′に係合させることが
でき、それにより袋穴部７，７′奥から引出され
る一方の係合杆部３，３′を一方の係合穴５，
５′に係合させ、ずれ止め機構８のピン２２，２
２′或いはずれ止め部材２５，２８をセツトし装
着が完了する。取外しの場合は前記と逆に扱う。
装着状態では係合杆部の一方３がずれ止め機構８
により拘束される結果、これと他方の係合杆部
４，４′の計三点が固定されるので、残る一方の
係合杆部３′にずれ止め機構８は不要である。 In the above, first insert the engaging rod part of the fall prevention frame 2 from one side 3, 3' into the blind hole part 7, 7' into the mouth part 1 of the manhole from which the cover body 9 has been removed, and push it all the way. The other end engagement rod portions 4, 4' are the other engagement hole 6,
Since it does not come into contact with the inner wall near 6', the engaging rod parts 4, 4' can be engaged with the engaging holes 6, 6', and thereby it can be pulled out from the back of the blind holes 7, 7'. One engagement rod part 3, 3' is connected to one engagement hole 5,
5' and the pins 22, 2 of the anti-slip mechanism 8.
2' or the retaining members 25 and 28 are set to complete the installation. For removal, handle in reverse order.
In the attached state, one side 3 of the engagement rod part is the anti-slip mechanism 8
As a result of being restrained by this, a total of three points, this and the other engaging rod portion 4, 4', are fixed, so the slip prevention mechanism 8 is not necessary for the remaining engaging rod portion 3'.
（考案の作用及び効果）
本案装置は転落防止枠２の両端係合杆部３，
４，３′，４′を、地下構造物の口部１の内側壁に
設けた係合穴５，６，５′，６′に抜出不能に係合
させ、かつその状態がずれ止め機構８で保たれる
構造とすることによつてその係合状態にあるとき
は絶対に外れることがなくなるから、確実性が著
しく高い。(Operation and effect of the invention) The device of the present invention includes engaging rod portions 3 at both ends of the fall prevention frame 2;
4, 3', 4' are irremovably engaged with the engagement holes 5, 6, 5', 6' provided in the inner wall of the mouth 1 of the underground structure, and this state is a slip prevention mechanism. By adopting a structure in which the lock is held at 8, it will never come off when it is in the engaged state, so reliability is extremely high.
取付の際は係合杆部の一方３，３′を袋穴部７，
７′の奥まで挿し込んで、係合杆部の他方４，
４′を内側壁と抵触させずに係合穴６，６′に係合
してから、係合杆部の一方３，３′を袋穴部７，
７′に連続した係合穴５，５′に係合させるので、
転落防止枠２を片側ずつ係合させるから、作業は
容易である。 When installing, connect one side 3, 3' of the engaging rod to the blind hole 7,
7', and then press the other engaging rod part 4,
4' into the engagement holes 6, 6' without contacting the inner wall, and then insert one of the engagement rod parts 3, 3' into the blind hole parts 7, 6'.
Since it is engaged with the engagement holes 5 and 5' that are continuous with 7',
The work is easy because the fall prevention frame 2 is engaged one side at a time.
かくして装着された転落防止枠２の一方の係合
杆部３，３′は係合穴５，５′から袋穴部７，７′
への移動が簡単な構造のずれ止め機構８によつて
防止され、前記抜出不能の状態に維持し得るもの
である。 One of the engaging rod portions 3, 3' of the fall prevention frame 2 thus installed extends from the engaging holes 5, 5' to the blind hole portions 7, 7'.
This movement is prevented by the simple structure of the anti-slip mechanism 8, and the non-extractable state can be maintained.
従つて本考案によれば、装着された転落防止枠
２はホースＨの引出しその他外力により上下、左
右いかなる方向にも外れることがないから地下構
造物内に落下したりせず、人の転落を完全に防止
できるので安全であり、前述した公知例の構造で
はいたずらされると偶然外れることもあるが、本
考案のずれ止め機構８の場合は意図して操作しな
いかぎり外れることがなく、施錠と同様の効果を
奏するため所期の目的を効果的に発揮できる効果
がある。 Therefore, according to the present invention, the attached fall prevention frame 2 will not come off in any direction, vertically, horizontally, or horizontally due to the pulling out of the hose H or other external force, so it will not fall into the underground structure and prevent people from falling. It is safe because it can be completely prevented, and while the above-mentioned structure of the known example may come off accidentally if tampered with, the anti-slip mechanism 8 of the present invention does not come off unless it is intentionally operated. Since the same effect is achieved, the intended purpose can be effectively achieved.
図面は本考案に係る地下構造物用転落防止枠の
着脱装置の実施例を示すもので、第１図は上面
図、第２図は断面図、第３図は要部斜視図、第４
図、第５図はずれ止め機構の２変形例を示す斜視
図である。
１……口部、２……転落防止枠、３，４，３′，
４′……係合杆部、５，６，５′，６′……係合穴、
７，７′……袋穴部、８……ずれ止め機構、２２
……ずれ止めピン、２４，２７……鉤部、２５，
２８……ずれ止め部材。
The drawings show an embodiment of the attachment/detachment device for the fall prevention frame for underground structures according to the present invention, and FIG. 1 is a top view, FIG. 2 is a sectional view, FIG. 3 is a perspective view of the main part, and FIG.
FIG. 5 is a perspective view showing two modified examples of the anti-slip mechanism. 1...Mouth, 2...Fall prevention frame, 3, 4, 3',
4'...Engagement rod part, 5, 6, 5', 6'...Engagement hole,
7, 7'...Blind hole portion, 8...Slip prevention mechanism, 22
...Slip prevention pin, 24, 27...Hook part, 25,
28...Slip prevention member.
Claims (1)
の両端係合杆部３，４，３′，４′を抜出不能に
係合させる係合穴５，６，５′，６′を口部１の
内側壁に形成し、各係合杆部３，４と３′，
４′の間の長さを、係合穴５，６，５′，６′と
の係合にのみ必要な長さに設定し、転落防止枠
２の着脱の為係合杆部の一方３，３′を一時的
に一方の係合穴５，５′より奥へ挿入すること
ができる袋穴部７，７′を一方の係合穴５，
５′の側方に連続して設け、装着後係合杆部３，
３′に係合し、それらが袋穴部７，７′に移動す
るのを防止するずれ止め機構８を設けて成る地
下構造物用転落防止枠の着脱装置。 (2) ずれ止め機構８は、一方の１個の係合穴５の
側方に連続する袋穴部７に設けられた、ずれ止
めピン２２を備えている実用新案登録請求の範
囲第１項記載の地下構造物用転落防止枠の着脱
装置。 (3) ずれ止め機構８は、一方の係合穴５，５′の
いずれかの側方の内側壁に軸支され、一方の係
合杆部３，３′のいずれかに掛止する鉤部２４
を有するずれ止め部材２５を備えている実用新
案登録請求の範囲第１項記載の地下構造物用転
落防止枠の着脱装置。 (4) ずれ止め機構８は、一方の袋穴部７，７′の
いずれかの開口を塞ぐようにその近くの内側壁
に軸支され、一方の係合杆部３，３′のいずれ
かの上角に掛止する鉤部２７を有するずれ止め
部材２８を備えている実用新案登録請求の範囲
第１項記載の地下構造物用転落防止枠の着脱装
置。[Scope of claims for utility model registration] (1) Fall prevention frame 2 attached to the mouth 1 of an underground structure
Engagement holes 5, 6, 5', and 6' are formed in the inner wall of the mouth portion 1 to engage the engagement rod portions 3, 4, 3', and 4' at both ends thereof in a non-removable manner. parts 3, 4 and 3',
4' is set to a length necessary only for engagement with the engagement holes 5, 6, 5', and 6', and one of the engagement rod parts 3 is set for attaching and detaching the fall prevention frame 2. , 3' can be temporarily inserted deeper than one of the engagement holes 5, 5'.
5', and after installation, the engaging rod part 3,
3' and prevents them from moving into the blind holes 7, 7'. (2) The anti-slip mechanism 8 is provided with an anti-slip pin 22 provided in a blind hole portion 7 that is continuous to the side of one engagement hole 5.Claim 1 of the Utility Model Registration Claims Attaching/detaching device for the fall prevention frame for underground structures described above. (3) The anti-slip mechanism 8 has a hook that is pivotally supported on the inner wall on either side of one of the engagement holes 5, 5' and hooked on one of the engagement rods 3, 3'. Part 24
An attachment/detachment device for a fall prevention frame for an underground structure as set forth in claim 1, which is a utility model registered and is provided with a slip prevention member 25 having the following. (4) The anti-slip mechanism 8 is pivotally supported on the inner wall near one of the blind holes 7, 7' so as to close the opening of either one of the blind holes 7, 7', and is supported by the inner wall of one of the blind holes 7, 7'. An attachment/detachment device for a fall prevention frame for an underground structure according to claim 1, which is provided with a slippage preventing member 28 having a hook portion 27 that is hooked to an upper corner of the utility model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985028739U JPH0219435Y2 (en) | 1985-02-28 | 1985-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985028739U JPH0219435Y2 (en) | 1985-02-28 | 1985-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61146296U JPS61146296U (en) | 1986-09-09 |
| JPH0219435Y2 true JPH0219435Y2 (en) | 1990-05-29 |
Family
ID=30526901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985028739U Expired JPH0219435Y2 (en) | 1985-02-28 | 1985-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0219435Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853334U (en) * | 1981-09-30 | 1983-04-11 | 株式会社日立製作所 | Patshua type gas shield disconnector |
-
1985
- 1985-02-28 JP JP1985028739U patent/JPH0219435Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853334U (en) * | 1981-09-30 | 1983-04-11 | 株式会社日立製作所 | Patshua type gas shield disconnector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61146296U (en) | 1986-09-09 |
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