JP2522549Y2 - Folding ladder - Google Patents

Folding ladder

Info

Publication number
JP2522549Y2
JP2522549Y2 JP1990056009U JP5600990U JP2522549Y2 JP 2522549 Y2 JP2522549 Y2 JP 2522549Y2 JP 1990056009 U JP1990056009 U JP 1990056009U JP 5600990 U JP5600990 U JP 5600990U JP 2522549 Y2 JP2522549 Y2 JP 2522549Y2
Authority
JP
Japan
Prior art keywords
vertical
folding ladder
vertical rail
screwed
arm
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 - Lifetime
Application number
JP1990056009U
Other languages
Japanese (ja)
Other versions
JPH0416300U (en
Inventor
▲ぎ▼孟 宮本
Original Assignee
株式会社宮本鉄工
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 株式会社宮本鉄工 filed Critical 株式会社宮本鉄工
Priority to JP1990056009U priority Critical patent/JP2522549Y2/en
Publication of JPH0416300U publication Critical patent/JPH0416300U/ja
Application granted granted Critical
Publication of JP2522549Y2 publication Critical patent/JP2522549Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、高層ビル、一般住宅、集団住宅、又はホテ
ルなどの各階層間相互に避難するために使用される折畳
梯子に関するものである。
[Detailed description of the invention] [Industrial application field] The present invention relates to a folding ladder used to evacuate each floor between high-rise buildings, ordinary houses, collective housing, and hotels. .

〔従来の技術〕[Conventional technology]

一般に高層建造物における火災発生時、その他の緊急
時等に屋内から屋外へ、又上層階より直下の階へのベラ
ンダ等に下り、又はこれとは逆に上層階に昇って避難す
るために昇降用の折畳梯子を備えた避難装置を常備設置
することが知られている。この避難装置は、安全上並び
に体裁上ばかりでなく、防犯上にも非常時にのみ伸張で
きる折畳梯子を備え、かつ床面と天井とに蓋板を有する
枠体で構成されたハッチとしてあり、床面蓋板と天井蓋
板とを同時に開いてハッチ内に収納された折畳梯子を下
層階のベランダに伸張降下するものが多用されている。
In general, in the event of a fire in a high-rise building, other emergencies, etc., go down from indoors to outdoors, down to a veranda etc. to the floor immediately below the upper floor, or conversely, go up and down to evacuate to the upper floor It is known that an evacuation device equipped with a folding ladder is installed on a permanent basis. This evacuation device is provided as a hatch composed of a frame having a folding ladder that can be extended only in an emergency, not only for safety and appearance but also for crime prevention, and having a cover plate on the floor and ceiling, In many cases, the floor cover plate and the ceiling cover plate are simultaneously opened, and the folding ladder stored in the hatch is extended and lowered on the veranda on the lower floor.

従来、この種の避難装置では、建屋そのものに避難口
を穿設する必要から新たな建築時か、或いは既設建屋で
は改造工事を伴わなければ設置できない不便・不経済が
あった。また、建屋のベランダや手摺に取付け常備する
ことも考えられるが、外方に突設されることになって体
裁が悪く、外観を損なうばかりか、風雨にさらされ、保
安上問題であるし、殊に垂直方向に位置させても壁側に
片寄せられることはふらつきが大きく、安定性に欠ける
し、スライドタイプではガタつきがあって、固定化がむ
ずかしく迅速な行動がとれないばかりか、避難降下時に
誘導部がなく避難者に不安感を与えることが多く安全面
の点でも問題があった。
Conventionally, in this type of evacuation device, there is an inconvenience and uneconomical problem that an evacuation port cannot be installed in a new building or in an existing building without remodeling work because an evacuation opening must be formed in the building itself. Also, it is conceivable that it is always installed on the veranda or handrail of the building, but it will be protruded outside, it will not only look bad, it will not only damage the appearance, but it will be exposed to wind and rain, which is a security problem, In particular, even if it is positioned vertically, it will not be able to take quick action because it is not stable because it is unstable and lacks stability because it is not stable because it is shifted to the wall side even if it is positioned in the vertical direction. Occasionally, there is no guidance section, which often gives evacuees a sense of anxiety, and there is also a problem in terms of safety.

本考案は、これら従来常備される避難用梯子の問題点
を解決し既設建屋にでも外観を損なうことなく簡単で安
全に設置できる避難用の折畳梯子を安価な形態で提供す
ることを目的とするものである。
The purpose of the present invention is to solve the problems of these conventional evacuation ladders and to provide an inexpensive folding ladder for evacuation that can be easily and safely installed even in an existing building without damaging its appearance. Is what you do.

〔課題を解決するための手段〕[Means for solving the problem]

本考案においては、上述の目的を達成するため、両側
に縦桟(1)(1)とステップとなる横桟(2)とから
なる連結枠体の複数をそれぞれ縦桟(1)(1)をもっ
て順次上下方向に互いに伸縮可能に連結して各連結枠体
が伸張姿勢がとれる折畳梯子において、最上段の縦桟
(1)の上端部にナット取付部(5)、(5)を備え、
該ナット取付部(5)、(5)に螺杆(61)、(61)を
螺合し、該螺杆(61)、(61)の上端にアーム(6)、
(6)を着脱可能に螺合し、このアーム(6)、(6)
の他方端側に鈎状に構成するフック片(7)、(7)を
締付子(8)、(8)で間隔調整自在に配備し、前記縦
桟(1)の下方外側部に、前記縦桟(1)の背面側に向
けて当片(9)をターンバックル(10)を介して突没自
在に備えるようにしている。
In the present invention, in order to achieve the above-mentioned object, a plurality of connecting frames each composed of a vertical crossbar (1) (1) and a horizontal crossbar (2) serving as a step are provided on each side of the vertical crossbar (1) (1). In the folding ladder in which each connecting frame body can take an extended posture by being sequentially connected to each other so as to be able to expand and contract in the vertical direction, nut attachment portions (5) and (5) are provided at the upper end of the uppermost vertical rail (1). ,
The nut mounting portion (5), (5) threaded rod (61) to (61) screwed,該螺rod (61), the arm (6) at the upper end (6 1),
(6) is detachably screwed into the arm (6), (6)
Hook pieces (7) and (7), which are formed in a hook shape, are provided at the other end side of the vertical crossbar (1) with adjustable distances by fasteners (8) and (8). An abutment (9) is provided so as to be able to protrude and retract through a turnbuckle (10) toward the back side of the vertical rail (1).

〔実施例〕〔Example〕

以下、本考案の実施例を第1図ないし第6図に基づい
て詳細に説明する。
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

本考案に係る折畳梯子は、第3図などに示すように、
複数の連結枠体を縦桟1、1を介して上下方向(図1や
図3の上下方向)に相互に伸縮可能に連結し、各連結枠
体が伸張姿勢がとれるものにおいて、最上段の一対の縦
桟1の上端部にナット取付部5、5をそれぞれ取り付
け、この一対のナット取付部5、5に螺杆61、61をそれ
ぞれ螺合し、この一対の螺杆螺杆61、61の上端にはアー
ム6、6をそれぞれ着脱可能に螺合するとともに、この
アーム6、6の他方端側にはフック片7、7を締付子
8、8で間隔を調整自在にそれぞれ配備し、縦桟1、1
の下方外側部には当片9をターンバックル10を介して突
没自在に備え、自立性を有するように構成されている。
The folding ladder according to the present invention, as shown in FIG.
A plurality of connecting frames are connected to each other via the vertical rails 1 and 1 so as to be able to expand and contract mutually in the vertical direction (the vertical direction in FIGS. 1 and 3), and each connecting frame can take an extended posture. attaching respective nut mounting portions 5 to the upper end portions of the pair of vertical bars 1, threaded rod 6 1, 6 1 screwed respectively to the pair of nut mounting portions 5, of the pair screw杆螺rod 6 1, 6 Arms 6 and 6 are detachably screwed to the upper end of 1 , and hook pieces 7 and 7 are provided at the other end of the arms 6 and 6 with fasteners 8 and 8 so that the distance therebetween can be adjusted. And the vertical bar 1, 1
A contact piece 9 is provided on the lower outer side of the lower part via a turnbuckle 10 so as to be freely protruded and retracted, and is configured to have autonomy.

各連結枠体は、左右両側に間隔をおいて位置する一対
の縦桟1、1を備え、この一対の縦桟1、1の上部間に
ステップ用の横桟2が水平に一体的に架設されることに
より、U字形又は逆U字形に形成されている。
Each connecting frame body includes a pair of vertical rails 1 and 1 spaced apart on both right and left sides, and a horizontal rail 2 for a step is horizontally and integrally installed between the pair of vertical rails 1 and 1. As a result, it is formed in a U-shape or an inverted U-shape.

各縦桟1は、その下端部が背面側(図2の左側)から
正面手前側(図2の右側)に所定の角度、例えば3〜5
度の角度で傾斜折曲され、この正面手前側に突き出た下
部が折曲部11を形成しており、この折曲部11には支持金
具として機能するリング体3がピン止め又は溶接により
固着されている。このリング体3は、環状又は枠形の帯
金からなり、その内部外側面が折曲部11に熔接又はピン
止めして固着されている。このリング体3と折曲部11
が区画形成する内部空間は嵌挿部4として形成され、こ
の嵌挿部4には内側、かつ下方に隣接位置する連結枠体
の縦桟1が上下方向に摺動自在に嵌挿配置されている。
このように、折曲部11の支持リング3を傾設するように
れば、隣接する連結枠体の縦桟1の摺り合せ面に折曲っ
た形態として折畳梯子が伸長した場合にこじり作用で固
定化することができ、自立性が確保され、揺れないよう
にすることができて便利である。
The lower end of each of the vertical rails 1 has a predetermined angle, for example, 3 to 5 from the rear side (the left side in FIG. 2) to the front side (the right side in FIG. 2).
Is the angle in the inclined bent degrees, the front near side to the protruding lower portion forms a bent portion 1 1, ring member 3 functions as a support bracket for the bent portion 1 1 is pinning or welding Is fixed. The ring body 3 is formed of an annular or frame-shaped metal band, and has an inner outer surface fixed to the bent portion 11 by welding or pinning. Interior space and the ring body 3 and the bent portion 1 1 is partitioned and formed is formed as a fitting portion 4, inside this fitting portion 4, and the vertical bars 1 of the connecting frame adjacent located below the upper and lower It is slidably inserted in the direction.
Thus, prying when lever support ring 3 of the bent portion 1 1 to傾設, folding ladder as a form curved folding the sliding mating surfaces of vertical bars 1 adjacent connecting frame member is extended It can be fixed by the action, the independence can be secured, and it can be prevented from shaking, which is convenient.

また、各横桟2は、折畳梯子が伸長された場合にその
長さ寸法が順次短くなるよう形成され、角筒形の踏み板
21が嵌合されている。この踏み板21は、滑り防止材、又
は滑り防止の構造に構成されている。
Each of the horizontal rails 2 is formed so that its length dimension is gradually shortened when the folding ladder is extended, and is a square tubular step board.
2 1 is mated. The footplate 2 1 is constructed in the structure of the anti-slip material, or anti-slip.

また、最上段に位置する連結枠体の一対のリング体3
の嵌挿部4には縦桟1の折曲部11が熔接又はピン止めし
てそれぞれ固着立設され、この一対の縦桟1、1の上端
部には上下方向に指向する円筒形のナット取付部5がそ
れぞれ取り付けられており、この各ナット取付部5には
アーム6がボルトからなる螺杆61を介して着脱可能に螺
合されている。なお、62は螺杆61のボルト頭部である。
Also, a pair of ring bodies 3 of the connection frame body located at the uppermost stage
Of fitting the insertion portion 4 is respectively fixed erected by stop welding or pins bent portion 1 1 of the vertical bars 1, cylindrical directed vertically to the upper end of the pair of vertical bars 1, 1 nuts and mounting unit 5 is attached respectively, are engaged removably threaded through a threaded rod 61 the arm 6 is made of a bolt in the respective nut mounting portion 5. In addition, 6 2 is a bolt head of the threaded rod 6 1.

アーム6は、屈曲形成され、その下部外側面にはナッ
ト機能を有する螺合部がそれぞれ設けられるとともに、
上部の自由端部には複数の螺杆用の孔が並べて穿設され
ており、この螺杆用の孔にはフック片7が複数の締付子
8を介して螺着されている。
The arm 6 is formed to be bent, and a screw portion having a nut function is provided on a lower outer surface thereof,
A plurality of screw holes are bored side by side at the upper free end, and hook pieces 7 are screwed into the screw holes via a plurality of fasteners 8.

フック片7は、ほぼL字形又は鈎状に屈曲形成され、
その一部には複数の固定子取付孔81が並べて穿設されて
おり、この複数の固定子取付孔81における任意の複数の
固定子取付孔81と、アーム6の螺杆用の複数の孔におけ
る任意の複数の孔とに複数の締付子8が貫通螺着される
こととなる。そして、この螺着作用により、アーム6と
フック片7との間隔は壁厚に適合させて固定位置が適宜
選択して変えられるようになっている(図3参照)。な
お、図3のAは外壁で、この外壁Aの上部にフック片7
が引っかけられるようになっている。
The hook piece 7 is bent and formed substantially in an L shape or a hook shape.
Its Some are bored side by side a plurality of stator mounting holes 81, any of a plurality of stator mounting hole 81 in the plurality of stator mounting hole 81, a plurality of threaded杆用arm 6 A plurality of fasteners 8 are to be threaded through any of the plurality of holes. By this screwing action, the distance between the arm 6 and the hook piece 7 is adapted to the wall thickness, and the fixing position can be appropriately selected and changed (see FIG. 3). 3A is an outer wall, and a hook piece 7 is provided on the upper portion of the outer wall A.
Is to be caught.

さらに、最上段に位置する連結枠体の一対の縦桟1、
1の下部外側面には当片9がターンバックル10及び螺杆
11を介して螺着されている。当片9は、ほぼコ字形に形
成され、その両自由端部にはターンバックル10(例え
ば、異なるネジ方向を有する螺孔のあるジョイント)が
それぞれ取り付けられており、このターンバックル10と
螺杆11との調整作用により、当片9は、外壁Aの壁面側
に位置接触し、折畳梯子と外壁Aの壁面との間隔保持用
のステータ、又はストッパとして活用されることとな
る。
Further, a pair of vertical rails 1 of the connecting frame body located at the uppermost stage,
On the lower outer surface of 1, a piece 9 has a turnbuckle 10 and a screw rod.
11 is screwed through. The contact piece 9 is formed in a substantially U-shape, and a turnbuckle 10 (for example, a joint having a screw hole having a different screw direction) is attached to each of its free ends, and the turnbuckle 10 and the screw rod 11 are attached. With this adjustment, the contact piece 9 comes into position contact with the wall surface side of the outer wall A, and is used as a stator or a stopper for maintaining a gap between the folding ladder and the wall surface of the outer wall A.

したがって、ベランダの外壁Aに設置され、折畳まれ
て収納されている梯子を使用する場合には、まず、外壁
Aの上部にアーム6とフック片7を引掛け、壁の厚さに
応じて取付孔81を選択し、締付子8で固定し、螺杆61
ネジ頭部62を回してアーム6の螺合部に螺合して定着
し、ターンバックル10を調整してフック片7を外壁Aに
当接させて締付け固定した後、梯子のストッパ(図示せ
ず)を外せばよい。
Therefore, when using the ladder which is installed on the outer wall A of the veranda and is folded and stored, first, the arm 6 and the hook piece 7 are hooked on the upper part of the outer wall A, and according to the thickness of the wall. select a mounting hole 81, fixed in Shimezukeko 8, fixed screwed to the screw portion of the arm 6 by turning the screw head 6 and second threaded rod 61, to adjust the turn buckle 10 hook After the piece 7 is brought into contact with the outer wall A and fastened and fixed, the stopper (not shown) of the ladder may be removed.

すると、折畳梯子は、その自重により、各連結枠体が
束になって一段ずつ順次降下し、階下床面に達して第1
図の状態となり、ベランダに吊垂固定される。この伸張
の過程で各連結枠体は、上方から下方に行くにつれて各
横桟2が順次リング体3で固定化され、各横桟2のリン
グ体3上に載置されたごとき位置となるため、ステップ
用の横桟2に足掛け昇降が安全で迅速に行い得るもので
あり、特に使用者の重量によって梯子の縦桟1がリング
体3で締って上り下りしやすく、安定した吊垂梯子とし
て使用することができる。さらに、フック片7の移動と
当片9の突出量で外壁Aの壁面に対応して締着化が確実
にできるものある。
Then, due to its own weight, the folding ladder descends step by step as a bundle of the connecting frames, and reaches the lower floor to reach the first floor.
As shown in the figure, it is suspended and fixed to the veranda. In this extension process, each connecting frame body is fixed at the ring body 3 sequentially from the upper part to the lower part as going from the upper part to the lower part, so that each connecting frame body is located at the position as if it were placed on the ring body 3 of each horizontal part 2. The vertical rail 1 of the ladder can be easily lifted and lowered by the ring body 3 due to the weight of the user. Can be used as Further, the fastening can be reliably performed in correspondence with the wall surface of the outer wall A by the movement of the hook piece 7 and the protrusion amount of the contact piece 9.

〔考案の効果〕[Effect of the invention]

以上のように本考案によれば、両側に縦桟(1)
(1)とステップとなる横桟(2)とからなる連結枠体
の複数をそれぞれ縦桟(1)(1)をもって順次上下方
向に互いに伸縮可能に連結して各連結枠体が伸張姿勢が
とれる折畳梯子において、最上段の縦桟(1)の上端部
にナットナット取付部5(5)を備え、該ナットナット
取付部5(5)に螺杆(61)を螺合し、該螺杆(61)の
上端にアーム(6)を着脱可能に螺合し、このアーム
(6)の他方端側に鈎状に構成するフック片(7)を締
付子(8)で間隔調整自在に配備し、前記縦桟(1)の
下方外側部に、前記縦桟(1)の背面側に向けて当片
(9)をターンバックル(10)を介して突没自在に備え
るようにしているので、避難梯子の不使用時は保管、防
犯、及び体裁の点からも好ましいコンパクトな形態で家
屋内側に収納できるとともに、使用に際しては螺杆61
アーム6を螺合し、迅速に家屋外側に梯子を取付け位置
せしめることができる。また、当片をターンバックルを
介して突没自在に備えているので、壁面との間隔保持用
のステータ、又はストッパとして使用することにより梯
子を堅固に固定できるほか、組み立て作業や保守点検上
の管理も簡便であるという効果がある。
As described above, according to the present invention, the vertical rails (1) are provided on both sides.
A plurality of connecting frames composed of (1) and horizontal rails (2) to be steps are sequentially connected to each other vertically and vertically with the vertical rails (1) and (1) so that the connecting frames can extend and contract. In the folding ladder that can be taken, a nut and nut mounting portion 5 (5) is provided at the upper end of the uppermost vertical rail ( 1 ), and a screw (61) is screwed into the nut and nut mounting portion 5 (5). upper detachably screwed arm (6) on the screw rod (61), interval adjustment hooks constituting the hook-shaped at the other end of the arm (6) and (7) in Shimezukeko (8) It is arranged freely, and a contact piece (9) is provided on the lower outer side of the vertical rail (1) toward the back side of the vertical rail (1) via a turnbuckle (10) so as to be freely retractable. When the evacuation ladder is not used, it can be stored inside the house in a compact form that is preferable from the viewpoint of storage, crime prevention, and appearance. Both the in use it can be screwed arm 6 to threaded rod 61, quickly allowed to position mounting the ladder in a house outside. In addition, since this piece is provided so that it can be protruded and retracted via a turnbuckle, the ladder can be firmly fixed by using it as a stator or stopper for maintaining the gap with the wall, and in addition to assembly work and maintenance and inspection. There is an effect that management is simple.

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

図面は本考案の実施例を示し、第1図は伸張状態の正面
図、第2図はその側面図、第3図は一部の斜視図、第4
図は折畳状態の正面図、第5図はその側面図、第6図は
使用状態の一部の側面図である。 1……縦桟、11……折曲部、2……横桟、3……リング
体、4……嵌挿部、5……ナット取付部、6……アー
ム、61……螺杆、7……フック片、8……締付子、9…
…当片、10……ターンバックル。
The drawings show an embodiment of the present invention, FIG. 1 is a front view in an extended state, FIG. 2 is a side view thereof, FIG. 3 is a partial perspective view, and FIG.
FIG. 5 is a front view of the folded state, FIG. 5 is a side view thereof, and FIG. 6 is a side view of a part of the used state. 1 ... vertical bar, 1 1 ... bent portion, 2 ... horizontal bar, 3 ... ring body, 4 ... fitting portion, 5 ... nut mounting portion, 6 ... arm, 6 1 ... screw rod , 7 ... hook piece, 8 ... fastener, 9 ...
… This piece, 10 …… turnbuckle.

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】両側に縦桟(1)(1)とステップとなる
横桟(2)とからなる連結枠体の複数をそれぞれ縦桟
(1)(1)をもって順次上下方向に互いに伸縮可能に
連結して各連結枠体が伸張姿勢がとれる折畳梯子におい
て、最上段の縦桟(1)の上端部にナット取付部
(5)、(5)を備え、該ナット取付部(5)、(5)
に螺杆(61)、(61)を螺合し、該螺杆(61)、(61
の上端にアーム(6)、(6)を着脱可能に螺合し、こ
のアーム(6)、(6)の他方端側に鈎状に構成するフ
ック片(7)、(7)を締付子(8)、(8)で間隔調
整自在に配備し、前記縦桟(1)の下方外側部に、前記
縦桟(1)の背面側に向けて当片(9)をターンバック
ル(10)を介して突没自在に備えたことを特徴とする折
畳梯子。
1. A plurality of connecting frames each comprising a vertical rail (1) (1) and a horizontal rail (2) as a step can be extended and contracted in the vertical direction with the vertical rails (1) and (1) respectively. In the folding ladder in which each connecting frame body can take an extended posture by being connected to the upper frame, nut attachment portions (5) and (5) are provided at the upper end of the uppermost vertical rail (1), and the nut attachment portion (5) is provided. , (5)
Threaded rods (6 1 ) and (6 1 ) are screwed into the screw rods (6 1 ) and (6 1 ).
Arms (6) and (6) are detachably screwed to the upper end of the arm, and hook pieces (7) and (7) having a hook shape are fastened to the other ends of the arms (6) and (6). The gaps (9) are arranged freely by the children (8) and (8), and the contact piece (9) is turned on the outer side below the vertical rail (1) toward the back side of the vertical rail (1). A folding ladder, characterized in that it is provided so that it can be protruded and retracted through the bracket.
JP1990056009U 1990-05-30 1990-05-30 Folding ladder Expired - Lifetime JP2522549Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990056009U JP2522549Y2 (en) 1990-05-30 1990-05-30 Folding ladder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990056009U JP2522549Y2 (en) 1990-05-30 1990-05-30 Folding ladder

Publications (2)

Publication Number Publication Date
JPH0416300U JPH0416300U (en) 1992-02-10
JP2522549Y2 true JP2522549Y2 (en) 1997-01-16

Family

ID=31579462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990056009U Expired - Lifetime JP2522549Y2 (en) 1990-05-30 1990-05-30 Folding ladder

Country Status (1)

Country Link
JP (1) JP2522549Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5488884B2 (en) * 2009-09-29 2014-05-14 特殊梯子製作所有限会社 Evacuation ladder device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58794B2 (en) * 1977-12-07 1983-01-07 株式会社ナカ技術研究所 Building evacuation device
JPS58150100U (en) * 1982-03-31 1983-10-07 宮本 ▲よし▼孟 evacuation ladder
JPS59102900U (en) * 1982-12-28 1984-07-11 株式会社消防科学研究所 Evacuation ladder hanging bracket
JPS6396199U (en) * 1986-12-11 1988-06-21

Also Published As

Publication number Publication date
JPH0416300U (en) 1992-02-10

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