JP3850420B2 - Folding escape ladder - Google Patents
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- JP3850420B2 JP3850420B2 JP2004101748A JP2004101748A JP3850420B2 JP 3850420 B2 JP3850420 B2 JP 3850420B2 JP 2004101748 A JP2004101748 A JP 2004101748A JP 2004101748 A JP2004101748 A JP 2004101748A JP 3850420 B2 JP3850420 B2 JP 3850420B2
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本発明は、不使用時には折り畳み状態で保管し、火災などの緊急避難時に窓枠やベランダの手すり等に懸架し、伸長垂下して使用する一般家屋や低層マンション用の折り畳み式避難はしごに関する。 The present invention relates to a folding evacuation ladder for a general house or a low-rise apartment that is stored in a folded state when not in use, suspended on a window frame or a handrail of a veranda in an emergency evacuation such as a fire, and extended and suspended.
上下方向に配設された多数本の横桟と、上下に隣接する横桟の両端部同士を連結する折り畳み自在な縦材と、最上段の横桟の両端部に取り付けられた吊り下げ金具とで構成され、不使用時には縦材が折り畳まれて横桟同士がそれらの下辺面と上辺面で当接した状態となり、使用時には吊り下げ金具を窓枠やベランダの手すりなどに懸架して伸長垂下状態になる折り畳み式避難はしごに関しては、従来からいくつかの改良発明、考案がなされている。
例えば特開平7−23860号公報では、上下に隣接する横桟の対向する面の一方の面に横桟の長手方向に沿う凸部を形成し、他の面に前記凸部に嵌合される凹部を形成し、前記凸部と凹部とを嵌合することによって折り畳み時のコンパクト化を図ったものが、また特開平8−86175号公報では、前後に配設した一対の折り畳みはしごをその横桟部分で結合されることによって前後方向の剛性を高め、建物の壁面に凹部があったり、あるいは壁面が途中からなくなっているような場所においても、避難者の体位にさほどの変動を与えることなく、安全かつ迅速に避難できるとしたものが、それぞれ公示されている。
For example, in Japanese Patent Application Laid-Open No. 7-23860, a convex portion along the longitudinal direction of the horizontal rail is formed on one surface of the opposite surfaces of the horizontal rail adjacent vertically, and the convex portion is fitted to the convex surface on the other surface. In the Japanese Patent Laid-Open No. 8-86175, a pair of folding ladders arranged at the front and back are arranged laterally by forming a concave portion and fitting the convex portion and the concave portion so as to make it compact. By connecting at the crosspiece, the rigidity in the front-rear direction is increased, and there is no significant fluctuation in the position of the evacuees even in places where the wall of the building has a recess or the wall is missing from the middle Each has been announced to be safe and quick to evacuate.
従来の折り畳み式避難はしごでは、横桟としてアルミ合金製等の中空角筒状のものが使用されており、前記縦材は横桟の側面外部に取り付けざるを得ず、横桟の安定化や横桟と縦材とを結合する部材の強度等を考慮すれば、横桟の両側面に2組みの縦材を配設するか、特開平8−86175号公報公示のように前後に配設した一対の折り畳みはしごをその横桟部分で結合させるかする必要があった。
また、縦材を構成する2個の部材がいずれも長尺板状体であることから、伸長垂下した避難はしごを再度折り畳んで収納する際、両部材が必ずしも内側に折り畳まれる保証はなく、両部材の結合部が外側に折り畳まれてしまうこともあり、その場合には人手により外側に折り畳まれた縦材を内側に折り畳み直して戻して収納する必要があった。
本発明は、不使用時には横桟の内部に折り畳まれて収納される1組みの縦材によって横桟の安定を保ち、かつ収納時に縦材が必ず内側に折り畳まれる折り畳み式避難はしごを提供することを課題としている。
In the conventional folding-type evacuation ladder, a hollow rectangular tube made of aluminum alloy or the like is used as the horizontal beam, and the vertical member has to be attached to the outside of the side surface of the horizontal beam. Considering the strength of the member that joins the cross beam and the vertical member, two sets of vertical members are arranged on both sides of the cross beam, or arranged in the front and rear as disclosed in JP-A-8-86175. It was necessary to join the pair of folding ladders at the crosspieces.
In addition, since the two members constituting the longitudinal member are both long plate-like bodies, there is no guarantee that both members will be folded inward when the stretched and suspended evacuation ladder is refolded and stored. In some cases, the connecting portion of the members may be folded outward, and in that case, it is necessary to manually store the vertical member folded outward by folding it back inward.
The present invention provides a folding evacuation ladder in which the horizontal beam is kept stable by a set of vertical members that are folded and stored inside the horizontal beam when not in use, and the vertical member is always folded inward when stored. Is an issue.
本発明者は上記課題を次のような手段で解決した。
(1)上下方向に配設された多数本の横桟と、上下に隣接する横桟の両端部同士を連結する折り畳み自在な縦材と、最上段の横桟の両端部に取り付けられた吊り下げ金具とで構成され、不使用時には縦材が折り畳まれて横桟同士がそれらの下辺面と上辺面で当接した状態となり、使用時には吊り下げ金具を窓枠やベランダの手すりなどに懸架して伸長垂下状態となる避難はしごにおいて、
前記横桟が、みぞ形断面を持つ部材であって、かつその両端部付近の上面に縦材の下部を挿通するスリットを備え、また、前記折り畳み自在な縦材が、その結合部で結合ピンにより互いに回動可能に結合された上下2つの部材からなり、上側部材は前記横桟の下面から、下側部材は前記横桟上面に設けたスリットから前記横桟の内部に導かれて前記横桟と結合ピンによって回動可能に結合されてなり、
そして前記横桟の両端部で横桟と縦材とを回動自在に結合する結合ピンにスプリングバネが周設され、同スプリングバネの一端が前記横桟の長辺に沿って内側に直線的に延伸され、かつその先端部分が前記横桟上面の内壁に当接し、また、他端が前記横桟の外側に向けて延伸され、横桟の端部から外に突出した部分で上方に曲げられ、さらに前記縦材が伸長垂下されたとき縦材下側部材の外側面に接触し、前記縦材下側部材が横桟より外側に突出するのを防止するように折り曲げられてなり、
使用した後には前記縦材が前記横桟の内部に確実に折り畳まれて収納されるよう構成されてなることを特徴とする折り畳み式避難はしご。
The present inventor has solved the above problems by the following means.
(1) A large number of horizontal rails arranged in the vertical direction, a foldable vertical member that connects both ends of the horizontal rails adjacent to each other in the vertical direction, and a suspension attached to both ends of the top horizontal rail When not in use, the vertical members are folded so that the horizontal rails are in contact with each other at the lower and upper sides, and when in use, the hanging brackets are suspended on the window frame or on the handrails of the veranda. In the evacuation ladder,
The crosspiece is a member having a groove-shaped cross section, and has a slit through which the lower part of the vertical member is inserted in the upper surface in the vicinity of both ends thereof, and the foldable vertical member has a connecting pin at the connecting portion. The upper member is guided from the lower surface of the horizontal beam and the lower member is guided from the slit provided on the upper surface of the horizontal beam to the inside of the horizontal beam. It is rotatably connected by a crosspiece and a connecting pin,
A spring spring is provided around a coupling pin that rotatably couples the horizontal beam and the vertical member at both ends of the horizontal beam, and one end of the spring spring is linearly inward along the long side of the horizontal beam. And the tip portion of the crosspiece is in contact with the inner wall of the upper surface of the horizontal beam, and the other end is extended toward the outside of the horizontal beam, and is bent upward at a portion protruding outward from the end portion of the horizontal beam. Further, when the vertical member is extended and drooped, the vertical member comes into contact with the outer surface of the lower member and is bent to prevent the vertical member lower member from protruding outward from the cross rail,
A foldable evacuation ladder, wherein the vertical member is configured to be securely folded and housed inside the horizontal rail after use .
(2)上下方向に配設された多数本の横桟と、上下に隣接する横桟の両端部同士を連結する折り畳み自在な縦材と、最上段の横桟の両端部に取り付けられた吊り下げ金具とで構成され、不使用時には縦材が折り畳まれて横桟同士がそれらの下辺面と上辺面で当接した状態となり、使用時には吊り下げ金具を窓枠やベランダの手すりなどに懸架して伸長垂下状態となる避難はしごにおいて、
前記横桟が、みぞ形断面を持つ部材であって、かつその両端部付近の上面に縦材の下部を挿通するスリットを備え、また、前記折り畳み自在な縦材が、その結合部で結合ピンにより互いに回動可能に結合された上下2つの部材からなり、上側部材は前記横桟の下面から、下側部材は前記横桟上面に設けたスリットから前記横桟の内部に導かれて前記横桟と結合ピンによって回動可能に結合されてなり、
そして、前記縦材の上下2つの部材が、上側部材は両端が円弧状をした長尺板状体でなり、下側部材は両端が円弧状をした長尺板状体がその横桟への結合部付近で緩やかに曲げられた形状をなし、前記下側部材の横桟への接合部付近に緩やかな曲がりを持たせたことによって縦材を折り畳んだとき、下側部材が横桟の上面に接触することなく上部の横桟の内部に収納され、
さらに、前記横桟の両端部で横桟と縦材とを回動自在に結合する結合ピンにスプリングバネが周設され、同スプリングバネの一端が前記横桟の長辺に沿って内側に直線的に延伸され、かつその先端部分が前記横桟上面の内壁に当接し、また、他端が前記横桟の外側に向けて延伸され、横桟の端部から外に突出した部分で上方に曲げられ、さらに前記縦材が伸長垂下されたとき縦材下側部材の外側面に接触し、前記縦材下側部材が横桟より外側に突出するのを防止するように折り曲げられてなり、
使用した後には前記縦材が前記横桟の内部に確実に折り畳まれて収納されるよう構成されてなることを特徴とする折り畳み式避難はしご。
(2) A large number of horizontal bars arranged in the vertical direction, a foldable vertical member that connects both ends of the horizontal bars adjacent to each other in the vertical direction, and a suspension attached to both ends of the uppermost horizontal beam. When not in use, the vertical members are folded so that the horizontal rails are in contact with each other at the lower and upper sides, and when in use, the hanging brackets are suspended on the window frame or on the handrails of the veranda. In the evacuation ladder,
The crosspiece is a member having a groove-shaped cross section, and has a slit through which the lower part of the vertical member is inserted in the upper surface in the vicinity of both ends thereof, and the foldable vertical member has a connecting pin at the connecting portion. The upper member is guided from the lower surface of the horizontal beam and the lower member is guided from the slit provided on the upper surface of the horizontal beam to the inside of the horizontal beam. It is rotatably connected by a crosspiece and a connecting pin,
Then, two upper and lower members of the longitudinal member is, the upper member is an elongated plate-like body both ends of which are arc-shaped, elongated plate-like body lower member both ends of which the arcuate to that rung When the vertical member is folded by having a gently bent shape near the joint and having a gentle bend in the vicinity of the joint of the lower member to the horizontal beam, the lower member is the upper surface of the horizontal beam. housed inside the upper rungs without contacting the,
Further, a spring spring is provided around a coupling pin that rotatably couples the horizontal beam and the vertical member at both ends of the horizontal beam, and one end of the spring spring is linearly inward along the long side of the horizontal beam. And the front end of which is in contact with the inner wall of the upper surface of the horizontal rail, and the other end is extended toward the outside of the horizontal rail and projects upward from the end of the horizontal rail. Bent and further bent to prevent the vertical member lower member from protruding outward from the horizontal rail, contacting the outer surface of the vertical member lower member when the vertical member is extended and suspended,
It said longitudinal member is configured in fold foldable escape ladder you characterized by comprising as housed folded securely inside the rung is after using.
本発明によって下記の効果が発揮できる。
(ア)避難はしご不使用時には、折り畳み自在な縦材の下側部材が緩やかな曲がりを持つので同下側部材が横桟の上面に接触することなく横桟の内部に収納され、収納スペースが少なくてすむ。
(イ)前記(ア)の効果に加えて、縦材と横桟の結合部及び縦材の2つの部材の結合部が横桟内部に収納されるので、シンプルな外観を呈するばかりでなく、不使用時に各結合部に塵埃の付着や雨水の浸入が抑制でき、避難はしご使用時の確実な伸長垂下が期待できる。
(ウ)縦材が、横桟両端部付近に開かれたスリットを介して横桟の内側で横桟と結合されるので、1組みの縦材で横桟の安定が保て、避難時の安全性が確保されるとともに、部品数が減少できるのでコスト低減が図れる。
(エ)そして横桟の両端部で横桟と縦材とを回動自在に結合する結合ピンに周設されたスプリングバネの端部が、被難はしごが伸張垂下された際、縦材の下側部材の外側面に接触し、該縦材の下側部材を内側に押し戻すように構成されてなるので、前記下側部材が外部に突き出るのを防止し、また使用した避難はしごを片づける際には、下側部材を内側に押し戻し、確実に横桟に収納される。
The following effects can be exhibited by the present invention.
(A) When the evacuation ladder is not used, the lower member of the foldable vertical member has a gentle bend, so the lower member is stored inside the horizontal beam without contacting the upper surface of the horizontal beam, and the storage space Less.
(A) In addition to the effect of (A) above, the connecting part of the vertical member and the horizontal beam and the connecting part of the two members of the vertical member are housed in the horizontal beam, so that not only a simple appearance is exhibited, When not in use, dust can be prevented from sticking to each joint and rainwater can be prevented from entering, and reliable extension and drooping when using an evacuation ladder can be expected.
(C) Since the vertical members are joined to the horizontal beam inside the horizontal beam through the slits opened near both ends of the horizontal beam, the horizontal beam can be kept stable with one set of vertical members. Safety is ensured and the number of parts can be reduced, thereby reducing costs.
(D) The end of the spring spring provided around the connecting pin that rotatably connects the horizontal beam and the vertical member at both ends of the horizontal beam is Since it is configured to contact the outer surface of the lower member and push the lower member of the longitudinal member back inward, the lower member is prevented from protruding to the outside, and the used evacuation ladder is cleared. In this case, the lower member is pushed back inward and is securely stored in the horizontal rail.
本発明の実施の形態を実施例の図に基づいて説明する。
図1は本発明の折り畳み式避難はしごの概要を示す斜視図、図2は避難はしご不使用時に縦材が横桟内部に収納される状態の説明図、図3は縦材と横桟の結合部の側面図(a)及び下面図(b)、図4は縦材・横桟結合ピンへの上下部材及びスプリングバネの配設状態を示す斜視図、図5は避難はしご不使用時(a)と使用時(b)の縦材と横桟の結合状態の説明図である。
図において1は横桟、1aはスリット、2は縦材、2aは上側部材、2bは下側部材、3は吊り下げ金具、4は部材結合ピン、5は縦材・横桟結合ピン、5a、5bは縦材・横桟結合ピンの軸径を異にする部分、6はスプリングバネ、6aはスプリングバネの2度折り曲げられて延伸された端部の先端、6bはスプリングバネの直線で延伸された端部の先端を示す。
Embodiments of the present invention will be described with reference to the drawings of the examples.
FIG. 1 is a perspective view showing an outline of a folding evacuation ladder according to the present invention, FIG. 2 is an explanatory view showing a state in which a vertical member is stored inside a horizontal beam when the evacuation ladder is not used, and FIG. 3 is a combination of the vertical member and the horizontal beam. Side view (a) and bottom view (b), FIG. 4 is a perspective view showing the arrangement of the upper and lower members and spring springs on the vertical member / crosspiece connecting pin, and FIG. 5 is when the evacuation ladder is not used (a It is explanatory drawing of the combined state of the vertical member and horizontal crosspiece at the time of use (b).
In the figure, 1 is a horizontal beam, 1a is a slit, 2 is a vertical member, 2a is an upper member, 2b is a lower member, 3 is a hanging metal fitting, 4 is a member coupling pin, 5 is a vertical member / horizontal beam coupling pin, 5a 5b is a part in which the shaft diameter of the vertical member / crosspiece connecting pin is different, 6 is a spring spring, 6a is a tip of the end of the spring spring which is bent twice and 6b is a straight line of the spring spring. The tip of the finished end is shown.
本発明の折り畳み式避難はしごは、図1に示したように、上下方向に配設された多数本の横桟1と、上下に隣接する横桟1の両端部同士を連結する折り畳み自在な縦材2と、最上段の横桟1の両端部に取り付けられた吊り下げ金具3とで構成され、不使用時には縦材2が折り畳まれて横桟1同士がそれらの下辺面と上辺面で当接した状態となり、使用時には吊り下げ金具3を窓枠やベランダの手すりなどに懸架して伸長垂下状態になる避難はしごであって、前記横桟1がみぞ形断面を持つ部材でなり、かつ横桟両端部付近の上面に縦材2の下部を挿通するスリット1aを備え、また前記縦材2が上下2つの部材2a、2bで構成され、2つの部材2a、2bはその端部で部材結合ピン4によって相互に回動可能に結合されているものである。また、前記縦材2の上側部材2aは両端が円弧状をした長尺板状体でなり、下側部材2bは両端が円弧状をした長尺板状体がその横桟への結合部付近で緩やかな曲がりを持った構造をなし、前記縦材2が折り畳まれた際、前記縦材2が図2に示すように前記横桟1の内部に収納されるようになっている。
As shown in FIG. 1, the foldable evacuation ladder according to the present invention is a foldable vertical ladder that connects a large number of
横桟と縦材の結合は、図3、図4に示すように横桟1の両端部の側面に穿設された結合ピン挿通孔と前記縦材2の部材2a、2bの端部に穿設された結合ピン挿通孔に縦材・横桟結合ピン5を挿通して行う。この際部材2a、2bは、図4に示したような軸径が3段階に変化している縦材・横桟結合ピン5の中央部5bにそれぞれ回動自在に結合される。なお、縦材・横桟結合ピン5の大きな軸径の部分5aは横桟1の側壁と上側部材2aとの間隔を一定に保持するスペーサの役割をも果たしている。
また、前記縦材・横桟結合ピン5の中央部5bには、図4に示すような一方の先端部が直線で延伸され、他の一端は反対側に直線で延伸された後直角に曲げられさらに前記縦材・横桟結合ピン5の軸径の太い5aの方向に折り曲げられたスプリングバネ6が前記横桟1の側壁と前記縦材2の下側部材2bとの間に周設されており、図3(b)に見られるように前記スプリングバネ6の直線で延伸された端部の先端6bは横桟1の上面内壁に接触し、2度折り曲げられて延伸された端部の先端6aは避難はしごが伸長垂下されたとき縦材2の下側部材2bの外側面に接して下側部材2bが外側に突出するのを防止している。なお、このスプリングバネ6は横桟1の側壁と下側部材2bとの間隔を一定に保つスペーサの役割も果たしている。
As shown in FIGS. 3 and 4, the horizontal crosspiece and the vertical member are connected to each other through the connecting pin insertion holes formed in the side surfaces of both ends of the
In addition, one end portion as shown in FIG. 4 is stretched in a straight line at the center portion 5b of the vertical member /
図5に避難はしごの不使用時と使用時の縦材2と横桟1との結合部の状態を比較して示した。不使用時においては、図5(a)に示すように縦材2の上側部材2aは取り付けられた横桟1の内部に水平に収納され、また下側部材2bは上方当接した横桟の内部に横桟1のスリット1aを介して収納されており、前記スプリングバネ6の2度折り曲げられて延伸された端部の先端6aには何ものも接触していない。
避難はしごが伸長垂下され使用状態になると、図5(b)に示すように縦材2の上側部材2aは垂下し、下側部材2bは上方に立ち上がる。この際、下側部材2bの外側面が、前記スプリングバネ6の2度折り曲げられて延伸された端部の先端6aに接触する。なお、この時前記スプリングバネ6の先端6aが下側部材2bの外側面を内側に幾分押し戻すような形態に前記スプリングバネ6を成形しておくことが好ましい。
FIG. 5 shows a comparison of the state of the connecting portion between the
When the evacuation ladder extends and hangs down, the
避難訓練等によって使用した後に避難はしごを片づける場合、上下の横桟を当接させようとすると、従来の折り畳み式はしごではそのときの上側部材2aと下側部材2bのわずかな位置関係の違いによって上側部材2aと下側部材2bの結合部は外側又は内側に折り畳まれる。しかし本発明の折り畳み避難はしごでは、前記スプリングバネ6の先端6aが下側部材2bの外側面を内側に押し戻すようになっているので、上側部材2aと下側部材2bが外側に折り畳まれることはない。万一前記上側部材2aと下側部材2bが外側に折り曲げられようとした場合には、下側部材2bの外側面がスプリングバネ6の先端6aを外側に押し付けることとなり、前記スプリングバネ6の弾性が作用して下側部材2bを内側に押し戻そうという力が強まり、その結果縦材2は内側に折り畳まれ、前記横桟1の内部に確実に収納される。
When clearing the evacuation ladder after using it for evacuation training, etc., if the upper and lower horizontal rails are brought into contact with each other, the conventional folding ladder has a slight difference in the positional relationship between the
なお、吊り下げ金具3は図1に示したようなカラビナ状の金具である必要はなく、既に市販・実用されている各種吊り下げ金具の中から、吊り下げ場所に最適な形状、構造の吊り下げ金具を選択使用すればよく、また吊り下げ金具3の最上段の横桟1への取り付けも従来使用されているロープや鎖などいかなる型式、いかなる素材のものであっても避難時の安全性が確保され、耐久性に優れたものであればよい。さらに、横桟1が建物の壁面に密着し、避難時に横桟1に足を掛けるのが難しくなるのを避けるため、前記横桟1の一方の側面に建物の壁面と横桟1との間に空隙を与える突出金具を備えることも好ましい。
さらにまた、避難はしごを使用する際、その急激な伸長垂下により直下にいる人物に危害を及ぼす危険を防止するためのスローダウン機構を備えることも好ましい。、
避難はしごの収納箱や、収納袋によって不使用時の防塵や防水に役立てるのもよいが、避難時に収納した避難はしごを迅速・容易に取り出せるものでなくてはならない。
なお、本発明は、避難はしごに最も適したものであるが、収納スペースが少なくてよく、全体がコンパクトにまとまり、かつ、折り畳みも容易で、さらには軽量であるので、避難はしごだけでなく、様々な用途(例えば、レジャー用や業務用など)における折り畳みはしごとして採用することができるものである。
The hanging
Furthermore, when using an evacuation ladder, it is also preferable to provide a slow-down mechanism for preventing a danger of harming a person who is directly below due to the sudden extension and drooping. ,
The evacuation ladder storage box and storage bag may be used for dust prevention and waterproofing when not in use, but the evacuation ladder stored at the time of evacuation must be able to be quickly and easily removed.
Although the present invention is most suitable for an evacuation ladder, the storage space may be small, the whole is compact, easy to fold, and further lightweight, so not only the evacuation ladder, It can be used as a folding ladder in various applications (for example, leisure and business use).
1:横桟
1a:スリット
2:縦材
2a:上側部材
2b:下側部材
3:吊り下げ金具
4:部材結合ピン
5:縦材・横桟結合ピン
5a、5b:縦材・横桟結合ピンの軸径を異にする部分
6:スプリングバネ
6a:スプリングバネの2度折り曲げられて延伸された端部の先端
6b:スプリングバネの直線で延伸された端部の先端
1:
Claims (2)
前記横桟が、みぞ形断面を持つ部材であって、かつその両端部付近の上面に縦材の下部を挿通するスリットを備え、また、前記折り畳み自在な縦材が、その結合部で結合ピンにより互いに回動可能に結合された上下2つの部材からなり、上側部材は前記横桟の下面から、下側部材は前記横桟上面に設けたスリットから前記横桟の内部に導かれて前記横桟と結合ピンによって回動可能に結合されてなり、
そして前記横桟の両端部で横桟と縦材とを回動自在に結合する結合ピンにスプリングバネが周設され、同スプリングバネの一端が前記横桟の長辺に沿って内側に直線的に延伸され、かつその先端部分が前記横桟上面の内壁に当接し、また、他端が前記横桟の外側に向けて延伸され、横桟の端部から外に突出した部分で上方に曲げられ、さらに前記縦材が伸長垂下されたとき縦材下側部材の外側面に接触し、前記縦材下側部材が横桟より外側に突出するのを防止するように折り曲げられてなり、
使用した後には前記縦材が前記横桟の内部に確実に折り畳まれて収納されるよう構成されてなることを特徴とする折り畳み式避難はしご。 A large number of horizontal rails arranged in the vertical direction, a foldable vertical member that connects the ends of the horizontal rails adjacent to each other in the vertical direction, and a hanging bracket attached to both ends of the uppermost horizontal rail, When not in use, the vertical members are folded so that the horizontal beams are in contact with each other on their lower and upper sides. When in use, the hanging brackets are suspended from the window frame or on the handrails of the veranda. In the evacuation ladder,
The crosspiece is a member having a groove-shaped cross section, and has a slit through which the lower part of the vertical member is inserted in the upper surface in the vicinity of both ends thereof, and the foldable vertical member has a connecting pin at the connecting portion. The upper member is guided from the lower surface of the horizontal beam and the lower member is guided from the slit provided on the upper surface of the horizontal beam to the inside of the horizontal beam. It is rotatably connected by a crosspiece and a connecting pin,
A spring spring is provided around a coupling pin that rotatably couples the horizontal beam and the vertical member at both ends of the horizontal beam, and one end of the spring spring is linearly inward along the long side of the horizontal beam. And the tip portion of the crosspiece is in contact with the inner wall of the upper surface of the horizontal beam, and the other end is extended toward the outside of the horizontal beam, and is bent upward at a portion protruding outward from the end portion of the horizontal beam. Further, when the vertical member is extended and drooped, the vertical member comes into contact with the outer surface of the lower member and is bent to prevent the vertical member lower member from protruding outward from the cross rail,
A foldable evacuation ladder, wherein the vertical member is configured to be securely folded and housed inside the horizontal rail after use .
前記横桟が、みぞ形断面を持つ部材であって、かつその両端部付近の上面に縦材の下部を挿通するスリットを備え、また、前記折り畳み自在な縦材が、その結合部で結合ピンにより互いに回動可能に結合された上下2つの部材からなり、上側部材は前記横桟の下面から、下側部材は前記横桟上面に設けたスリットから前記横桟の内部に導かれて前記横桟と結合ピンによって回動可能に結合されてなり、
そして、前記縦材の上下2つの部材が、上側部材は両端が円弧状をした長尺板状体でなり、下側部材は両端が円弧状をした長尺板状体がその横桟への結合部付近で緩やかに曲げられた形状をなし、前記下側部材の横桟への接合部付近に緩やかな曲がりを持たせたことによって縦材を折り畳んだとき、下側部材が横桟の上面に接触することなく上部の横桟の内部に収納され、
さらに、前記横桟の両端部で横桟と縦材とを回動自在に結合する結合ピンにスプリングバネが周設され、同スプリングバネの一端が前記横桟の長辺に沿って内側に直線的に延伸され、かつその先端部分が前記横桟上面の内壁に当接し、また、他端が前記横桟の外側に向けて延伸され、横桟の端部から外に突出した部分で上方に曲げられ、さらに前記縦材が伸長垂下されたとき縦材下側部材の外側面に接触し、前記縦材下側部材が横桟より外側に突出するのを防止するように折り曲げられてなり、
使用した後には前記縦材が前記横桟の内部に確実に折り畳まれて収納されるよう構成されてなることを特徴とする折り畳み式避難はしご。 A large number of horizontal rails arranged in the vertical direction, a foldable vertical member that connects the ends of the horizontal rails adjacent to each other in the vertical direction, and a hanging bracket attached to both ends of the uppermost horizontal rail, When not in use, the vertical members are folded so that the horizontal beams are in contact with each other on their lower and upper sides. When in use, the hanging brackets are suspended from the window frame or on the handrails of the veranda. In the evacuation ladder,
The crosspiece is a member having a groove-shaped cross section, and has a slit through which the lower part of the vertical member is inserted in the upper surface in the vicinity of both ends thereof, and the foldable vertical member has a connecting pin at the connecting portion. The upper member is guided from the lower surface of the horizontal beam and the lower member is guided from the slit provided on the upper surface of the horizontal beam to the inside of the horizontal beam. It is rotatably connected by a crosspiece and a connecting pin,
Then, two upper and lower members of the longitudinal member is, the upper member is an elongated plate-like body both ends of which are arc-shaped, elongated plate-like body lower member both ends of which the arcuate to that rung When the vertical member is folded by having a gently bent shape near the joint and having a gentle bend in the vicinity of the joint of the lower member to the horizontal beam, the lower member is the upper surface of the horizontal beam. housed inside the upper rungs without contacting the,
Further, a spring spring is provided around a coupling pin that rotatably couples the horizontal beam and the vertical member at both ends of the horizontal beam, and one end of the spring spring is linearly inward along the long side of the horizontal beam. And the front end of which is in contact with the inner wall of the upper surface of the horizontal rail, and the other end is extended toward the outside of the horizontal rail and projects upward from the end of the horizontal rail. Bent and further bent to prevent the vertical member lower member from protruding outward from the horizontal rail, contacting the outer surface of the vertical member lower member when the vertical member is extended and suspended,
It said longitudinal member is configured in fold foldable escape ladder you characterized by comprising as housed folded securely inside the rung is after using.
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