JP2620917B2 - Evacuation ladder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to evacuate from high places such as buildings and condominiums and high places such as general residential houses at the time of emergency evacuation such as fire, and to be folded when not in use. The present invention relates to an improvement of an evacuation ladder which is stored in a shortened state and is hung on a window frame or a handrail of a building when used to extend and hang down along a wall surface of the building.

[0002]

2. Description of the Related Art Conventionally, as this kind of evacuation ladder, for example, one having a structure shown in FIG. 13 is known. That is, the evacuation ladder includes a plurality of horizontal rails 30 arranged at predetermined intervals in the vertical direction, and a longitudinal member 31 having a foldable link structure connecting both ends of the horizontal rails 30 vertically adjacent to each other. A rod-shaped protrusion 32 attached to each of the horizontal rails 30 so as to protrude rearward, a hanging bracket 34 mounted to the uppermost horizontal rail 30 via a chain 33, and holding the evacuation ladder in a shortened state. The vertical member 31 is in a shortened state by folding, and the vertical member 31 is in an extended state by extending the vertical member 31.

[0003] When evacuation is performed using the evacuation ladder at the time of emergency evacuation such as a fire, the evacuee first puts the evacuation ladder out of the window so that the projection 32 is in front of the evacuation ladder. Hang 34 on the window sill. Next, the stopper 35 is operated to release the shortened holding state of the evacuation ladder. Then,
The evacuation ladder is extended by its own weight and is extended and suspended along the wall surface W of the building. As a result, the refugee can evacuate from a high place to a low place along the evacuation ladder in the extended hanging state. In this evacuation ladder, when the projection 32 comes into contact with the wall surface W of the building and the horizontal beam 30 is separated from the wall surface W by a certain distance when it is in the extended hanging state, the evacuees can easily put their limbs on the horizontal beam 30. There are advantages such as becoming.

[0004]

By the way, in the conventional evacuation ladder, as shown in FIG. 14, each protrusion 32 is attached to both ends of the horizontal rail 30 and has a protrusion 32a which protrudes rearward. The wall W is provided continuously between the rear ends of the protrusions 32a.
And a contact portion 32b capable of contacting the front portion (a horizontal rail 3).
(0 side) is bent in a substantially U-shape. As a result, only a part of the contact portion 32b comes into contact with the wall surface W, and the contact portion 32b slides very easily along the wall surface W. Therefore, when the evacuee descends along the evacuation ladder, there is a problem that the protrusion 32 slides along the wall surface W and the entire evacuation ladder swings. Further, since the protrusion 32 is disposed on the same horizontal plane as the horizontal rail 30 and only a part of the contact portion 32b contacts the wall surface W, the protrusion 32 contacts the wall surface W in an extremely unstable state. Become. As a result, when the load of the evacuee is applied to the horizontal rail 30, the horizontal rail 30 is more likely to move up and down with the portion in contact with the wall surface W of the contact portion 32 b as a fulcrum, and the evacuee descends. There was also the problem of difficulty.

Further, in the conventional evacuation ladder, each of the horizontal rails 30 is formed by a square pipe, and when shortened, the upper and lower surfaces of the horizontal rails 30 which are vertically adjacent to each other are brought into contact with each other so as to be compact as a whole. It is configured. However, when the number of the horizontal rails 30 is increased and the total length of the evacuation ladder is increased, there is a problem that even if the vertical rails 30 adjacent to each other are brought into contact with each other, it is not possible to reduce the size.

In addition, a stopper 35 used in a conventional evacuation ladder is provided with a substantially U-shaped holding rod 36 into which each of the horizontal rails 30 is inserted, and a locking member inserted and locked at both ends of the holding rod 36. The evacuation ladder is composed of a stop plate 37 and a pin 38 inserted into the holding rod 36 above the locking plate 37. When the pin 38 is pulled out and the locking plate 37 is removed from the holding rod 36, the evacuation ladder is moved by its own weight. It extends and descends. However, when the stopper 35 is used, when the locking plate 37 is detached from the holding rod 36, the holding rod 36 falls first, and there is a possibility that a person directly below the evacuation ladder may be hit directly. There was also a problem with safety.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to prevent rocking in the extended hanging state, to achieve compactness when shortened, and to achieve safety. The aim is to provide an evacuation ladder that is also excellent in nature.

[0008]

In order to achieve the above object, an evacuation ladder according to the present invention comprises a plurality of horizontal rails arranged at predetermined intervals in the vertical direction, and both ends of a vertical rail adjacent vertically. It has a foldable vertical member that connects each other, a rod-shaped protrusion attached to each horizontal rail in a protruding posture, and a hanging bracket attached to the top horizontal rail. In the evacuation ladder, where the material is folded and shortened, and the hanging bracket is hung on the window frame or handrail of the building and extends down along the wall of the building when in use, the protrusion is moved horizontally. The protruding part is attached to both ends of the crosspiece and protrudes rearward, and a contact part is provided between the rear ends of the protruding parts and is parallel to the horizontal crosspiece and can contact the wall surface. The central part of the contact is curved downward or upward to abut the wall

In the evacuation ladder, at least one of the opposing surfaces of the vertically adjacent horizontal rails is formed with a convex portion along the longitudinal direction of the horizontal rail, and the other surface is provided with the convexities. It is preferable to form a concave portion to be fitted to the portion.

Further, a stopper for holding the evacuation ladder in a shortened state is provided on the uppermost horizontal rail, and the stopper has a substantially inverted L-shaped main body which is hooked on the uppermost horizontal rail, and one end of the main body. A band attached to the part and wound around the horizontal rail of the evacuation ladder in the shortened state and extending to the other end of the main body, and attached to the other end of the main body, the tip of the band is attached to the other end of the main body It is preferable that it is constituted by a locking piece for locking.

[0011]

The evacuation ladder is folded into a shortened state when not in use, and is held in a shortened state by fasteners.
It is installed near the indoor window. In the evacuation ladder, a convex portion is formed on the upper surface of each horizontal rail, and a concave portion is formed on the lower surface of each horizontal rail, so that the convex portion and the concave portion of the horizontal rail adjacent vertically are fitted. Therefore, it is extremely compact when shortened. As a result, it becomes easy to store, and the handleability is excellent.

During an emergency evacuation such as a fire, the evacuee first puts the evacuation ladder folded out in a shortened state out of the window with the prong facing forward, and attaches the hanging bracket to the window frame. Multiply. Next, the evacuee operates the stopper after confirming the safety at the bottom, and releases the shortened holding state of the evacuation ladder.
That is, the locking piece of the stopper is operated to release the locking of the band. Then, the evacuation ladder is extended by its own weight and is extended and suspended along the wall surface of the building. At this time, the contact portions of the respective protrusions abut against the wall surface of the building, and a certain gap is formed between each of the horizontal rails and the wall surface. by this,
Evacuees can easily put their limbs on the horizontal rail. Also, the stopper is
Even if the band is removed, the main body is hung on the uppermost horizontal rail, so that the parts of the fasteners do not drop when the evacuation ladder is extended, which is excellent in safety. And
When the evacuation ladder extends and hangs along the wall of the building, the evacuees evacuate from a high place to a low place along the evacuation ladder.

[0013] In this evacuation ladder, when the extension hangs, the contact portion of the protrusion contacts the wall surface of the building, so that bending and swinging in the front-rear direction can be prevented. In particular, in this evacuation ladder, since the entire contact portion abuts on the wall surface, the contact portion becomes difficult to slide along the wall surface, and even if the evacuee descends along the evacuation ladder, the entire evacuation ladder shakes. There is no danger of moving. Of course, because the contact part of the protruding part is in contact with the wall at different positions vertically,
The protrusion will come into contact with the wall in an extremely stable state,
It does not mean that the horizontal rail moves up and down with the portion where it abuts on the wall surface of the abutment portion as a fulcrum. Therefore, the evacuees can safely and smoothly descend from high places to low places along the evacuation ladder.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 9 show an evacuation ladder according to an embodiment of the present invention. The evacuation ladder includes a plurality of cross rails 1, a plurality of vertical members 2, a plurality of protrusions 3, a pair of hanging brackets 4, and a stopper. 5 is comprised.

That is, each of the horizontal rails 1 is formed by a square pipe (length: 366 mm, height: 17 mm, width: 25 mm) made of aluminum alloy having the same length and size, and is provided at predetermined intervals in the vertical direction. Are located in As shown in FIGS. 4 and 5, the upper surface of each horizontal rail 1 has a convex portion 1 along the longitudinal direction.
a (having a height of about 2 mm and a width of 18 mm) are formed, and a plurality of non-slip grooves 1c are formed along the longitudinal direction on the upper surface of the projection 1a. Further, a concave portion 1b (2 m depth) fitted to the convex portion 1a is provided on the lower surface of each horizontal rail 1.
m, width 21 mm) are formed along the longitudinal direction.
In FIGS. 1 and 6, reference numeral 1d denotes a support hole which is formed at both ends of each cross rail 1 in the front-rear direction, and through which a tip of a protrusion 3 described later is inserted and supported. Is a plastic cap which is fitted to both ends to prevent dust from entering the horizontal rail 1.

In the above embodiment, each cross rail 1 is formed by a square pipe made of aluminum alloy. In other embodiments, each cross rail 1 is formed by a square pipe made of stainless steel. You may do it. Further, in the above embodiment, the convex portion 1a is provided on the upper surface of each horizontal rail 1, and the concave portion 1b is provided on the lower surface of each horizontal rail 1.
Are formed respectively, but in other embodiments,
A concave portion 1b is provided on the upper surface of each horizontal rail 1, and a convex portion 1b is provided on the lower surface of each horizontal rail 1.
a may be formed respectively, or both the convex portion 1a and the concave portion 1b may be omitted.

The vertical member 2 connects both ends of the horizontal rail 1 vertically adjacent to each other, and is configured to be freely foldable, and both ends are rotatably connected to the ends of the horizontal rail 1. Installed. In this embodiment, the vertical member 2 is composed of a pair of link members 2 'made of an aluminum alloy, and the link members 2'
Are freely foldable by rotatably pivoting their ends with rivets 7. The vertical members 2 are disposed on the front and rear surfaces of both ends of the horizontal rail 1 vertically adjacent to each other, and mounting holes 2a (FIG. 5) corresponding to the support holes 1d of the horizontal rails 1 are provided at the upper and lower ends thereof. ) Are drilled respectively.
Both ends of the vertical member 2 are rotatably attached to ends of the horizontal rail 1 vertically adjacent to each other via a protrusion 3 to be described later. That is, as shown in FIG.
Align the mounting holes 2a with the support holes 1d of the horizontal rail 1,
By inserting the tip of the projection 3 into each of the holes 2a and 1d, it is rotatably attached to the end of the horizontal rail 1.

In the above embodiment, each vertical member 2 is formed by a link member 2 'made of an aluminum alloy. In another embodiment, each vertical member 2 is formed by a stainless steel link member 2'. ′. In the above embodiment, the vertical members 2 are arranged on the front and rear surfaces of both ends of the horizontal rail 1, respectively. However, in other embodiments, the vertical members 2 are connected to both ends of the horizontal rail 1. It may be arranged on only one of the front surface and the rear surface.

As shown in FIG. 6 to FIG.
It is attached to both ends of each horizontal rail 1 in a posture protruding rearward, and also serves to rotatably mount the end of the vertical member 2 to the end of the horizontal rail 1. In this embodiment, the projection 3 is formed by bending an aluminum alloy bar (diameter 6 mm) of an appropriate length into a substantially U-shape in plan view, and has a tip portion of the horizontal rail 1. And a parallel protruding portion 3a which is inserted through the supporting hole 1d of the vertical member 2 and the mounting hole 2a of the vertical member 2 and protrudes rearward in a horizontal posture, and is provided continuously between a rear end portion of the protruding portion 3a, And a contact portion 3b capable of contacting the wall surface W. Further, as shown in FIG. 3, the central portion of the contact portion 3b of the projection 3 is bent downward in a substantially U-shape so as to contact the wall surface W, and the evacuation ladder is folded to be in a shortened state. Also, the vertically adjacent contact portions 3b do not collide with each other. Further, the protrusion 3a of the projection 3 is provided with a flange 3c for regulating the insertion depth of the support hole 1d of the horizontal rail 1 and the mounting hole 2a of the vertical member 2. As shown in FIG. 5, the projecting member 3 is configured such that the tip of the protruding portion 3 a is attached to the mounting hole 2 a of the vertical member 2, the support hole 1 d of the horizontal member 1, Through the protruding part 3
By fitting the washer 8 at the tip of the a and crimping the end, the horizontal rail 1 is attached to both ends of the cross rail 1 in a posture protruding rearward. At this time, the ends of the vertical members 2
As a result, it is rotatably attached to the end of the horizontal rail 1. In this embodiment, the projection 3 attached to the lowermost row and the second row from the bottom is formed in the same shape as the conventional projection shown in FIG. 14, and the evacuation ladder is folded and shortened. Contact portion 3b bent downward when it is in the state
Are designed not to protrude below the lowermost horizontal rail 1.

In the above embodiment, each protrusion 3 is formed of a bar made of aluminum alloy. In other embodiments, each protrusion 3 is formed of a bar of stainless steel. You may do it. Further, in the above embodiment, the projection 3 is attached to the horizontal rail 1 by inserting the projection 3a of the projection 3 into the support hole 1d of the horizontal rail 1, but in another embodiment. In this case, the distal end of the projection 3 may be fixed to the rear surfaces of both ends of the horizontal rail 1 by welding. in this case,
The ends of the vertical members 2 are rotatably attached to both ends of the horizontal rail 1 with rivets or the like. Further, in the above embodiment, the central portion of the contact portion 3b is bent downward, but in other embodiments, the central portion of the contact portion 3b may be bent upward. good. In addition, in the above-described embodiment, the protrusion 3 attached to the lowermost row and the second horizontal row 1 from the bottom has the same shape as the conventional one,
A protrusion 3 having a central portion of the contact portion 3b curved downward may be attached to all the horizontal rails 1.

The hanging brackets 4 are respectively attached to both ends of the uppermost horizontal rail 1, and are configured to be detachably hooked to a window frame of a building. In the present embodiment, as shown in FIGS.
A stainless steel outer fitting 9 having a letter shape and having a plurality of width adjusting holes 9a formed therein, and a plurality of width adjusting holes 10a having a substantially L shape and matching the width adjusting holes 9a of the outer fitting 9 were formed. A stainless steel inner fitting 10, a bolt / nut 11 for connecting the two fittings 9, 10 so as to be movable, and a stainless steel C-shaped fitting 13 swingably attached to the outer fitting 9 by rivets 12. By changing the positions of the width adjustment holes 9a, 10a of the two metal fittings 9, 10, the width between the two metal fittings 9, 10 can be adjusted to match the thickness of the window frame. And the hanging bracket 4
Are attached to both ends of the uppermost horizontal rail 1 via a connection fitting 14 and a wire rope 15. That is, the hanging metal fittings 4 are attached to both ends of the horizontal rail 1 at the uppermost stage, and are connected to both ends of the horizontal rail 1 by connecting the connecting metal fittings 14 and the C-shaped metal fittings 13 with the wire ropes 15. Installed.

In the above embodiment, the hanging bracket 4 is attached to both ends of the uppermost horizontal rail 1 via the connecting bracket 14 and the wire rope 15, but in other embodiments. Alternatively, the hanging bracket 4 may be attached to both ends of the uppermost horizontal rail 1 via a chain or the like.

As shown in FIGS. 1, 3 and 4, the stopper 5 is provided on the uppermost horizontal rail 1, and holds the evacuation ladder in a shortened state. It is composed of a stop piece 18. That is, the main body 16 is formed in a substantially inverted L-shape by stainless steel plate, and the upper end thereof is hooked on the uppermost horizontal rail 1 so as to cover the front, upper and rear surfaces of the horizontal rail 1. It has become. or,
An annular handle 19 is attached to the upper surface of the main body 16. One end of the band 17 is attached to the end on the long piece 16a side of the main body 16, and the length thereof is wound around the horizontal rail 1 of the evacuation ladder in a shortened state and is directed to the short piece 16 b side of the main body 16. It is set so that it can be reached. The band 17 is a band 17 made of nylon or cloth. The locking piece 18 has a substantially L-shaped side surface, and swings on the outer surface of the main body 16 on the short piece 16b side between a standing position (a dashed line position in FIG. 4) and a tilting position (a solid line position in FIG. 4). When the locking piece 18 is in the upright position, the distal end portion 18a of the locking piece 18 and the main body 16 are
When the locking piece 18 is turned to the main body 16 side to be in the tilted position, a gap between the front end portion 18a of the locking piece 18 and the short piece 16b of the main body 16 is formed. The front end of the band 17 can be pressed and clamped between them.

Next, the case of evacuation using the evacuation ladder will be described. The evacuation ladder is folded in a shortened state when not in use, and is held in a shortened state by a stopper 5, and is installed at a position near an indoor window or the like.
The width of the hanging bracket 4 is adjusted in advance according to the thickness of the window frame.

In this evacuation ladder, a convex portion 1a is formed on the upper surface of each horizontal rail 1 and a concave portion 1b is formed on the lower surface of each horizontal rail 1, so that the convex ladder 1a of the horizontal rail 1 which is vertically adjacent to each other. Since the recess 1b is fitted, it is extremely compact when shortened. That is, in this embodiment, the protrusion 1a and the recess 1b each having a height and a depth of 2 mm are provided on the horizontal rail 1 having a height of 17 mm.
Is formed, for example, in the case of an evacuation ladder using 25 horizontal rails 1, when shortened, the overall height of the horizontal rails 1 from the bottom to the top becomes 377 mm. On the other hand, the height not forming the convex portion 1a and the concave portion 1b is 17
In the case of a conventional evacuation ladder using 25 horizontal rails 1 of 25 mm, the overall height of the horizontal rail 1 from the lowermost stage to the uppermost stage becomes 425 mm when shortened. Also becomes 48 mm longer. As a result, the evacuation ladder of the present invention
When shortened, it becomes compact and easy to store,
It also has excellent handling characteristics.

In the event of an emergency evacuation such as a fire, the evacuee first takes out the evacuation ladder folded in a shortened state from the storage location, and places the evacuation ladder out of the window with the protrusion 3 in front. And hang the hanging bracket 4 on the window frame.
In addition, the evacuation ladder is made lighter and can be easily carried because the horizontal rail 1, the vertical member 2, and the protrusion 3 are formed of an aluminum alloy.

After hanging the hanging bracket 4 on the window frame and hanging the evacuation ladder out of the window, the evacuee checks the safety at the bottom and then operates the stopper 5 to release the shortened holding state of the evacuation ladder. . That is, when the locking piece 18 is swung from the tilted position to the upright position, the locking of the band 17 is released, and the evacuation ladder is extended by its own weight, and is extended and suspended along the wall surface W of the building. At this time, the contact portion 3b of each of the projections 3 comes into contact with the wall surface W of the building, and a certain gap is formed between each horizontal rail 1 and the wall surface W. In addition, since the main body 16 is hung on the uppermost horizontal rail 1 even if the band 17 is removed, parts of the stopper 5 fall when the evacuation ladder is extended, and hit the person directly under the window directly. Without any, it is also excellent in safety.

Then, when the evacuation ladder extends and hangs along the wall surface W of the building, the evacuee evacuates from a high place to a low place along the evacuation ladder.

In this evacuation ladder, the contact portion 3b of the projection 3 comes into contact with the wall surface W of the building when it is in the extended hanging state.
In addition to preventing bending and swinging in the front-rear direction, the horizontal rails 1 are separated from the wall surface W by a certain distance, and the evacuees can easily put their limbs on the horizontal rails 1. In particular, in this evacuation ladder, since the entire contact portion 3b abuts on the wall surface W, the contact portion 3b is hardly slid along the wall surface W, and the evacuees can evacuate even if they descend along the evacuation ladder. There is no danger that the whole ladder will swing. Of course, since the contact portion 3b of the protruding member 3 is in contact with the wall surface W at different positions in the vertical direction, the protruding member 3 comes into contact with the wall surface W in an extremely stable state, and The portion 3b does not move up and down with the portion in contact with the wall surface W as a fulcrum. Furthermore, since the convex part 1a is formed on the upper surface of each horizontal rail 1, when the evacuee descends along the horizontal rail 1, the convex part 1a serves as a slip stopper, and the evacuee slides his / her feet. There is no saying. Therefore, the evacuees can descend more safely and smoothly along the evacuation ladder.

On the other hand, after the use of the evacuation ladder, the evacuation ladder is removed from the window frame, and the longitudinal members 2 are sequentially folded toward the center of the evacuation ladder to reduce the evacuation ladder. Is kept in the shortened state and stored in the storage place.

In the above-described embodiment, the hanging bracket 4 of the type that is hooked on the window frame is attached to the uppermost horizontal rail 1, but in other embodiments, the uppermost horizontal rail is used. A hook-type hanging bracket 4 for hanging on a handrail provided near the window may be attached to the crosspiece 1. That is, as shown in FIGS. 10 to 12, the hanging bracket 4 is formed in a substantially J shape by a steel bar, has a notch 20c inside the distal end portion on the short piece 20a side, and has a distal end on the long piece 20b side. The hook body 20 is formed in a substantially U-shape by a hook body 20 having an annular shape and a steel rod having elasticity.
0, a pair of mounting holes 20d, 20
e, which are rotatably inserted into the hook body 20 and which have a curved portion 21b which is locked in a notch 20c of the hook body 20. Also, the mounting hole 2 of the hook body 20
0d and 20e are bored in the annular portion at a certain interval vertically, and the upper mounting hole 20d is located on the inner side of the hook body 20 with respect to the straight line connecting the lower mounting hole 20e and the notch 20c. Formed to the side. Further, the retaining member 21 includes a short piece 21a having a tip portion inserted into the upper mounting hole 20d, and a curved portion 21 connected to the short piece 21a.
b, and a long piece 21c that is connected to the curved portion 21b and has a tip end inserted into the lower mounting hole 20e, and the distance L between the tip of the short piece 21a and the tip of the long piece 21c is vertically larger than the mounting hole 20d. , 20e so as to be wider than the interval between the curved portions 21b. In this state, the tip of the short piece 21a and the tip of the long piece 21c are brought close to each other, and the tip of the short piece 21a is attached to the upper mounting hole 20d with the short piece 21a and the long piece 21c elastically deformed.
Further, the tip of the long piece 21c is inserted and locked in the lower mounting hole 20e. Accordingly, the retaining body 21 is formed on the hook body 20 in combination with the fact that the short piece 21a and the long piece 21c are elastically deformed and the pivot points (tips of the short piece 21a and the long piece 21c) are inconsistent. When attached, the curved portion 21b is urged so as to be locked by the notch 20c of the hook body 20, and the opening of the hook body 20 is closed.

Further, in another embodiment, the hanging bracket 4 has a structure shown in FIGS. 1 to 3 of Japanese Utility Model Laid-Open No. 55-12887 or Japanese Utility Model Publication No. 57-194.
The structure shown in FIGS. 1 to 4 of Japanese Patent Publication No. 37 may be used.

[0033]

As described above, in the evacuation ladder according to the first aspect of the present invention, the rod-shaped projections attached to each of the horizontal rails so as to project rearward are attached to both ends of the horizontal rail. , A projecting portion projecting rearward and a rear end portion of the projecting portion are continuously provided,
And a contact portion parallel to the horizontal rail and capable of contacting the wall surface, and a central portion of the contact portion is bent downward or upward to contact the wall surface. As a result, when the evacuation ladder extends and hangs down along the wall surface of the building, the entire contact portion comes into contact with the wall surface. However, there is no guarantee that the entire evacuation ladder will swing when descending along the evacuation ladder. In addition, since the contact portion of the protrusion contacts the wall surface at different positions in the vertical direction, the protrusion comes into contact with the wall surface in an extremely stable state, and the horizontal rail contacts the wall surface of the contact portion. It does not mean that it moves up and down around the part where it is. Therefore, the evacuees can descend more safely and smoothly along the evacuation ladder.

Further, in the evacuation ladders according to the second and third aspects, the following effects can be further obtained in addition to the above effects. That is, in the evacuation ladder of claim 2, at least one of the opposing surfaces of the vertically adjacent horizontal rails is formed with a convex portion along the longitudinal direction of the horizontal rails, and the other surface has The configuration is such that a concave portion fitted to the convex portion is formed. As a result, when the evacuation ladder is in the shortened state, the protrusions and recesses of the respective crosspieces are fitted to each other, which makes the evacuation ladder extremely compact, easy to store, and excellent in handleability. .

In the evacuation ladder of the third aspect, a stopper for holding the evacuation ladder in a shortened state is provided on the uppermost horizontal rail, and the stopper is hung on the uppermost horizontal rail. A substantially inverted L-shaped main body, a band attached to one end of the main body, wound around a horizontal rail of the evacuation ladder in a shortened state and extending to the other end of the main body, attached to the other end of the main body,
And a locking piece for locking the tip of the band to the other end of the main body. As a result, even when the band is removed, the main body is hung on the uppermost horizontal rail, so that the parts do not fall when the evacuation ladder is extended, and the safety is excellent in safety.

[Brief description of the drawings]

FIG. 1 is a partially omitted front view showing a shortened state of an evacuation ladder according to an embodiment of the present invention.

FIG. 2 is a partially omitted side view showing a shortened state of the evacuation ladder.

FIG. 3 is a partially omitted rear view showing a shortened state of the evacuation ladder.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 1;

FIG. 5 is an enlarged cross-sectional view of a connecting portion between a horizontal rail, a vertical member, and a protrusion.

FIG. 6 is a partially omitted front view showing an extended hanging state of the evacuation ladder.

FIG. 7 is a partially omitted side view showing an extended hanging state of the evacuation ladder.

FIG. 8 is an enlarged sectional view taken along line BB of FIG. 6;

FIG. 9 is an enlarged sectional view taken along line CC of FIG. 6;

FIG. 10 is a side view showing another example of the hanging bracket.

FIG. 11 is a rear view of the hanging bracket shown in FIG. 10;

12 is a side view of a retaining body of the hanging bracket shown in FIG.

FIG. 13 is a perspective view showing a use state of a conventional evacuation ladder.

FIG. 14 is an enlarged plan view of a side rail and a protrusion of a conventional evacuation ladder.

[Explanation of symbols]

1 is a horizontal rail, 1a is a convex portion, 1b is a concave portion, 2 is a vertical member, 3 is a protrusion, 3a is a protruding portion, 3b is a contact portion, 4 is a hanging bracket,
5 is a stopper, 16 is a main body, 17 is a band, 18 is a locking piece, and W is a wall surface.

Claims (3)

(57) [Claims] 1. A plurality of horizontal rails (1) arranged at predetermined intervals in a vertical direction, and a foldable vertical member (2) connecting both ends of a horizontal rail (1) vertically adjacent to each other. A bar-shaped projection (3) attached to each of the horizontal rails (1) so as to protrude rearward, and a hanging bracket (4) mounted on the uppermost horizontal rail (1). In some cases, the vertical member (2) is folded to be in a shortened state, and in use, the hanging bracket (4) is hung on a window frame or a handrail of the building to extend and hang down along the wall surface (W) of the building. On the ladder,
The protrusion (3) is attached to both ends of the horizontal rail (1) and protrudes rearward and protrudes (3a).
And a contact portion (3b) parallel to the horizontal rail (1) and capable of contacting the wall surface (W), and a central portion of the contact portion (3b) is provided. An evacuation ladder characterized by being curved downward or upward to abut against a wall surface (W). 2. A protruding portion (1a) extending along the longitudinal direction of the horizontal rail (1) is formed on at least one of the opposing surfaces of the horizontal rail (1) vertically adjacent to each other, and is formed on the other surface. The protrusion (1)
The evacuation ladder according to claim 1, characterized in that a recess (1b) to be fitted in (a) is formed. 3. A stopper (5) for holding the escape ladder in a shortened state is provided on the uppermost horizontal rail (1), and the stopper (5) is hung on the uppermost horizontal rail (1). R
And a band (1) attached to one end of the main body (16) and wrapped around the side rail (1) of the evacuation ladder in a shortened state and extending to the other end of the main body (16).
7) and a locking piece (18) attached to the other end of the main body (16) and locking the tip of the band (17) to the other end of the main body (16). The evacuation ladder according to claim 1 or 2, wherein