JPH078800Y2 - Hanging ladders and evacuation hatches for buildings - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evacuation hatch that is set in advance in a building such as a hanging ladder and a condominium used in an emergency evacuation to prepare for an emergency evacuation.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8 and 9, this kind of evacuation hatch has a box A and a foldable hanging ladder B built in the box A. Box A
Is set in advance on the balcony D of the condominium C, etc. Then, in a normal state, the ladder B is stored in the box A in a folded state, and during an emergency evacuation, the ladder B is hung from the box A to the veranda D on the next floor, and the ladder B is suspended. It is transmitted and urgently evacuated.

Further, the hanging ladder B comprises a plurality of connecting members E and a plurality of footrests F supported through the connecting members E, and the connecting members E are a set of two. , The central portions of the respective set connecting members E are swingably connected to each other via the pivots G, and the respective set connecting members E are laterally opposed to each other at a predetermined interval. While connecting the free end side of each set connecting member E and the free end side of the other set connecting member E via the connecting shafts H, among these connecting shafts H, the condominium etc. when the ladder B is suspended The footrest F is attached to the connecting shaft H located on the side opposite to the wall I side.

In normal times other than emergencies, as shown by phantom lines in FIG. 9, the respective set connecting members E are folded together with the footrest F in a vertically stacked manner about the pivot axis G, In this folded state, it is housed inside the box A, and at the time of an emergency evacuation, as shown by the solid lines in FIGS. 8 and 9, each set connecting member E is centered on the pivot axis G. While swinging in the intersecting direction and extending to the lower side, the entire ladder B is hung down to the veranda D side of the next floor, and the veranda D is hung on the footrest F provided on the connecting shaft H. Evacuate to.

[0005]

However, in the hanging ladder B described above, the connecting members E for each set are formed as one set of two.
Are connected to each other via a pivot shaft G, and the free end side of each set connecting member E opposed to each other at a predetermined interval is connected to the free end side of the other set connecting member E by a connecting shaft H. When the ladder B is folded, the set connecting members E are folded in a vertically stacked relationship with each other, so that the folding volume of the ladder B is increased.
Therefore, there is a problem that the box A for accommodating the ladder B also becomes large and the evacuation hatch becomes large.

The present invention has been made in view of the above problems, and a first object thereof is to provide a hanging ladder capable of performing a safe emergency evacuation while reducing the folding volume. A second object of the present invention is to provide an evacuation hatch for buildings that can be downsized in its entirety by using the hanging ladder having a small folding volume.

[0007]

In order to achieve the above object, a suspension ladder according to the present invention comprises a pair of left and right chain-like members in which a large number of link plates are pivotally attached in a chain form through pins, and The left and right chain members are made up of footrests that are installed between any opposing link plates, and each link plate is allowed to swing only in one direction from a state where these link plates are aligned in a straight line. It is characterized in that a stopper for blocking is formed.

Further, the building escape hatch of the present invention is characterized in that the hanging ladder is built in a box body made of an aluminum alloy.

[0009]

In the above-mentioned hanging ladder, the pair of left and right chain-like members supporting the foot-holding member has a large number of link plates,
Each link plate is composed of a pin that connects each link plate, and each link plate is freely rotatable around this pin. By folding the body, a large degree of freedom can be secured when folding each chain body, and the ladder can be folded small, that is, the folding volume of the ladder can be reduced. In addition, when such a ladder is used to evacuate to a veranda on the next floor of an apartment, for example, each link plate that constitutes each of the chain members is linearly aligned with each other. Since a stopper is formed to prevent only swinging in one direction from the above state, by suspending each chain so that each stopper is positioned to face the wall side of a condominium or the like, , The stoppers restrict the swinging of the chain members toward the wall portion, and therefore, the foot is placed outside the wall portion of the leg holder that is installed between the chain members. When evacuating to the balcony on the next floor, swinging of each chain toward the wall side is blocked,
The stability of each chain is improved, and safe evacuation is possible.

As described above, the evacuation hatch for a building is constructed by incorporating the hanging ladder, which has a small folding volume, in a box body made of aluminum alloy. It is possible to use a thing, and the entire structure of the evacuation hatch for the building is downsized. In other words, when the size of the box is fixed, it is housed in the box. The length of the hanging ladder can be increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an evacuation hatch for buildings, in which 1 is a box body containing a hanging ladder, which will be described in detail later, and is a rectangular box body that penetrates vertically. 11 and
Rectangular upper lid 1 for closing the upper and lower openings of the box body 11
2 and the lower lid 13, and a pair of first links 14 and 14 and second links 15 and 15 facing each other in the front-rear center portions on the left and right sides of the upper lid 12 and the lower lid 13, respectively.
And rotatably supported by a total of four brackets 16, and the first links 14, 14 and the second link 1
The third links 17, 17 are respectively provided on the tip side with respect to 5, 5, 15.
And the fourth links 18 and 18 are foldably connected to each other so that the free ends of the third links 17 and 17 and the fourth links 18 and 18 are rotatably pivoted, while the third links 17 are , 17 are made to project toward the front side with respect to the pivotally connecting parts of the fourth links 18, 18, and stoppers 19 for restricting the positions of the fourth links 18, 18 are provided at the protruding parts.

The box body 11 forming the box body 1 is
An aluminum alloy (for example, JIS code 5052H18) pultruded member having excellent corrosion resistance and rigidity is used, and the upper lid 12 and the lower lid 13 are also made of the same aluminum alloy as described above.

When the upper lid 12 is opened and closed with respect to the box body 11, the lower lid 13 side is also held open and closed at the same time. That is, the upper lid 1 for the box body 11
At the time of closing 2, the front ends of the first links 14 and the third links 17 are respectively extended to the central portion side of the box body 11 in the front-rear direction and folded in a vertically opposed manner. The respective stoppers 19 provided at the tips of the fourth links 17 restrict the positions of the respective fourth links 18 in the upward pushing state, and the respective second links 15 are upwardly moved through the respective fourth links 18. Is lifted to each of the second links 1
The lower lid 13 is held in a closed state by lifting 5 upward. On the other hand, when the upper lid 12 is opened with respect to the box body 11, as shown in FIG.
4 and each of the third links 17 are linearly swung from the folded state, and each of the fourth of the stoppers 19 is moved.
The position restriction on the link 18 is released, and the second and fourth links 15 and 18 are respectively swung downward with this release, and the lower lid 13 side is held in an open state.

Further, a hanging ladder 2 is freely inserted into and taken out from the inside of the box body 1. The ladder 2 is, as shown in FIG. 1, a pair of left and right chain bodies 3, 3. 3 and a footrest 4 which is erected at a predetermined interval between the respective chain-like bodies 3, 3. As shown in FIGS. 2 and 3, the chain-like bodies 3 are interposed between the outer link plates 5 and 5 and the outer link plates 5 and 5 as one set. A pair of inner link plates 6 and 6 each having a pair of outer and inner link plates 5 and 6, and a plurality of sets of the outer and inner link plates 5 and 6 are connected in a chain shape through pins 7, respectively. Each of the plates 5 and 6 is provided with stoppers 8 and 8 which respectively prevent the link plates 5 and 6 from swinging in one direction from a state where they are aligned in a straight line.

That is, the outer and inner link plates 5 and 6 of each set are provided with a pair of pin insertion holes 52 and 5 on both sides in the length direction of the link plate bodies 51 and 61, respectively.
2 and 62, 62 are provided, and each link plate main body 5
The link plate main body 5 is provided on one side in the height direction of 1, 61.
The stoppers 8 and 8 which are curved toward one side in the thickness direction with respect to 1 and 61 are integrally formed.

Then, the inner link plates 6 and 6 which are made into a set of two pieces are superposed in a butt shape so that the respective stoppers 8 and 8 are directed in opposite directions, and a pair of two pieces are made. The outer link plate 5,
5, the stoppers 8 and 8 are oriented so that they face each other, and the inner link plates 6 and 6 are superposed on the outer side at one side in the length direction, and the outer and inner link plates 5 of each of these groups are stacked. , 5 and 6, 6 are aligned with the insertion holes 52, 62, and the pin 7 is inserted between the insertion holes 52, 62, so that the outer member and the inner member of each set are inserted. The link plates 5, 5 and 6, 6 are connected in a chain, and thus, when the outer and inner link plates 5, 5, 6 and 6 of each set are arranged in a straight line, it is clear in FIG. As described above, the stoppers 8 formed on the outer link plates 5 and 5 and the inner link plates 6 and 6, respectively.
The lengthwise side portions of the link plates are brought into contact with each other to prevent the link plates 5, 5, 6 and 6 from swinging in one direction from being linearly aligned. In addition, the outer and inner link plates 5 and 5, which form the chain 3,
As 6 is prepared one kind of link plate 5 or 6 provided with the stopper 8 as described above, and by changing the direction of the stopper 8 provided on each link plate 5 or 6 and connecting them to each other, The chain body 3 can be easily obtained with only one type of link plate 5 or 6. The material of the outer and inner link plates 5, 6 and the pin 7 of each set is stainless steel 30.
4-29 HP is used.

As described above, the chain bodies 3 are formed by using the outer link plates 5 and 5 and the inner link plates 6 and 6 which are set as a set of two sheets, so that the outer sets of the respective sets are formed. A large thickness can be secured in the axial direction of the inner link plates 5 and 6, and the pins 7 of the outer and inner link plates 5 and 6 can be secured.
Can be reduced in the axial direction, that is, when the ladder 2 composed of the chain members 3 and 3 as described above is hung down and, for example, an emergency evacuation is performed on a veranda on the next floor of an apartment. The so-called rolling can be reduced, and safe evacuation can be performed.

Further, the chain-like bodies 3 and 3 having the above constitution
The footrest 4 is attached between them as follows. That is, as clearly shown in FIG.
In the connecting portion of the outer and inner link plates 5 and 6 that form the
The bracket 9 is fixed via the bracket 9, the tip side of the bracket 9 is inserted into the inside of the footrest body 4, and the footrest body 4 and the bracket 9 are coupled to each other through a plurality of rivets 92. The footrest 4 is fixed between the chain members 3 and 3. As in the case of the box body 1, the footrest 4 is also made of a pultruded member made of an aluminum alloy (for example, JIS code 5052H18) having excellent corrosion resistance and rigidity.

Further, the hanging ladder 2 having the above structure is housed in the box body 1 so that it can be taken in and out as follows. That is, as clarified in FIGS. 1 and 5, a pair of brackets 19, 19 are fixed on both inner sides of the box body 11 in the box body 1 in the left-right direction, and between the brackets 19, 19. The shaft rod 20 is inserted and erected, and the support pipe 21 is inserted into the shaft rod 20 so that the pipe 2
On each of the left and right sides of 1 on the shaft rod 20, each of the chain-like bodies 3, 3
One end side of each of the pin insertion holes 52 and 62 formed in the one set of the outer link plate 5 or the inner link plate 6 forming each of the chain-like bodies 3 and 3 is inserted at one end side in the length direction of On the other hand, these outer link plates 5
Alternatively, the shaft rod 20 is provided outside the inner link plate 6.
By inserting the collars 21 and 21 on the upper side and screwing the cap nuts 22 and 22 onto the screw portions provided at the protruding portions of the shaft rod 20 from the brackets 19 and 19, respectively, The chain bodies 3 and 3 are housed and supported in the box body 1 via 19 and 19.

Further, in FIGS. 1 and 6, reference numeral 23 denotes an abutting shaft of each of the chain-like bodies 3 and 3 which is erected on the lower front side of the shaft rod 20 in each of the brackets 19 and 19, When suspending each chain 3 or 3 on a veranda or the like on the next floor of an apartment, a predetermined space is secured between each chain 3 or 3 and the wall of the apartment or the like, and It is intended to make it easier to evacuate to the balcony of the floor. That is, the chain members are arranged so that the stoppers 8 provided on the outer and inner link plates 5 and 6 that form the chain members 3 and 3 are positioned to face the wall portion side of a condominium or the like. When the chains 3 and 3 are suspended, the stoppers 8 and 8 restrict the swing of the chains 3 and 3 toward the wall portion, and the chains 3 and 3 are The lower front side of the supporting portion for the shaft rod 20 is the contact shaft 23.
By abutting against each other, a predetermined space can be secured between each of the chain-like bodies 3 and 3 and the wall portion of the condominium or the like. Further, in each of the drawings, reference numeral 24 is a band-shaped holder for accommodating the ladder 2 in the box 1.

Next, the operation of the building evacuation hatch constructed as described above will be described. This building evacuation hatch is preliminarily embedded in a veranda or the like of a condominium in a manner that the box body 11 of the box body 1 is previously set. In normal times other than emergencies, as shown in FIG. 6, the hanging ladder 2 is stored in the box body 11 of the box body 1 in a folded state via the holding body 24. The upper lid 12 and the lower lid 13 with respect to the box body 11
Both and are held closed. At this time, a pair of right and left chain-like bodies 3 and 3 constituting the ladder 2 are provided with a plurality of sets of outer and inner link plates 5 and 6 each having a stopper 8 and a link of each set. The link plates 5 and 6 of the respective sets are freely rotatable around the pins 7, which connect the plates 5 and 6. By folding the stoppers 8 so that they are on the outer side, the degree of freedom in folding the chain bodies 3, 3 is increased, and the ladder 2 can be folded small, that is, the ladder 2 The folding volume of is small.
Therefore, a small box body 11 of the box body 1 can be used, and the entire structure of the building evacuation hatch can be miniaturized. In other words, the box body 11
If the size of the ladder is constant, the length of the ladder 2 accommodated in the box body 11 can be increased, the ladder 2 can be hung over a long distance, and it is possible to evacuate to a safe place. Of.

On the other hand, at the time of emergency evacuation, the lower lid 13 is simultaneously opened by opening the upper lid 12 of the box body 1, and the ladder 2 is opened on the next floor of the apartment by releasing the holding body 24. It is hung down by the etc., and the emergency evacuation is carried out along this ladder 2. At this time, in the outer and inner link plates 5 and 6 of each set constituting the chain-like bodies 3 and 3 of the ladder 2, the link plates 5 and 6 are arranged in a straight line in one direction. Since the stoppers 8 and 8 that prevent only the rocking of the chain are formed, the chain members 3 and 3 are suspended so that the stoppers 8 and 8 are positioned to face the wall portion side of an apartment or the like. By lowering, the stoppers 8 and 8 restrict the swinging of the chain members 3 and 3 toward the wall portion side. Therefore, the stoppers 8 and 8 are installed between the chain members 3 and 3. When the legs are hung on the outside of the wall portion of the footrest 4 to evacuate to the veranda side of the next floor, swinging of the chain members 3 and 3 toward the wall portion is prevented, and each chain member The stability of the bodies 3 and 3 is improved, and safe evacuation is possible. In addition, as described above, by configuring each of the chain-like bodies 3 and 3 by using the outer link plates 5 and 5 and the inner link plates 6 and 6 which are a set of two sheets, as described above. The vertical swing of the chain members 3, 3 with respect to the wall of the condominium can be reduced, and safe evacuation can be performed.

In the above embodiment, the evacuation hatch for a building in which the hanging ladder 2 of the present invention is housed freely in and out of the box 1 has been described, but the ladder 2 of the present invention is described.
Can be used not only as an evacuation hatch for buildings but also as a single unit, for example. That is, as shown in FIG. 7, in a condominium in which the upper and lower rooms 30 are constructed in a staircase shape, the ladder 2 is provided on the veranda 31 of the upper room 30.
In case of emergency evacuation from the room 30 on the upper layer side to the veranda 31 of the room 30 on the lower layer on the next floor, the chains 3 and 3 of the ladder 2 are hung to evacuate. At this time, each set outer and inner link plate 5, which constitutes each chain body 3, 3,
The stoppers 8 and 8 provided in 6 contact the inclined surfaces of the veranda 31 of the upper layer side room 30 and the lower layer side room 30 to position the chain bodies 3 and 3 so as to be positioned on the lower side. Since it is suspended, the downward swinging of the chain members 3, 3 is restricted by the stoppers 8, 8, so that the chain members 3, 3 and the A predetermined clearance can be secured between the lower-layer room 30 and safe evacuation. Further, in the above embodiment, the pair of left and right chain-like bodies 3, 3 constituting the ladder 2 are formed by a large number of sets of the outer and inner link plates 5, 6 each having the stopper 8 formed as one set of two. In this invention, the chain members 3 and 3 are constructed by using the outer link plate 5 and the inner link plate 6 one by one. Is also possible.

[0024]

As described above, the hanging ladder according to the present invention has a pair of left and right chain members in which a large number of link plates are pivotally connected in a chain shape via pins, and It is composed of a foot hanger which is installed between arbitrary opposed link plates, and each of the link plates is provided with a stopper for preventing the link plates from swinging in one direction only in a state where they are aligned in a straight line. Therefore, while the folding capacity of the hanging ladder can be made small, it can be extended in a substantially straight line during use and the emergency evacuation can be performed safely.

Further, in the building evacuation hatch of the present invention, since the hanging ladder described above is built in the aluminum alloy box body, the box body can be made excellent in corrosion resistance and rigidity. Moreover, since the ladder has a small folding volume, the entire building evacuation hatch can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view of a building evacuation hatch according to the present invention, showing a state in which a ladder is suspended.

FIG. 2 is a perspective view of a part of a chain used in the ladder of the present invention.

FIG. 3 is an exploded perspective view of the same chain.

FIG. 4 is a partially cutaway front view showing a state in which a footrest is attached to the same chain.

FIG. 5 is a partially cutaway front view showing a state in which the same chain is attached to the box body side.

FIG. 6 is a cross-sectional view showing a state in which the ladder is accommodated in the box body.

FIG. 7 is a side view showing another example of use of the ladder.

FIG. 8 is a front view showing a conventional building evacuation hatch, showing a state in which a ladder is suspended.

FIG. 9 is a side view of the evacuation hatch for the building.

[Explanation of symbols]

 1 Box body 2 Ladder ladder 3 Chain-like body 4 Leg hanging body 5,6 Link plate 7 Pin 8 Stopper

Claims (2)

[Scope of utility model registration request] 1. A pair of left and right chain bodies in which a large number of link plates are pivotally connected in a chain manner via pins, and a footrest body laid between arbitrary opposing link plates of these left and right chain bodies. A hanging ladder, wherein each of the link plates is formed with a stopper that prevents the link plates from swinging in one direction only when the link plates are arranged in a straight line. 2. An evacuation hatch for buildings, wherein the hanging ladder according to claim 1 is built in a box body made of an aluminum alloy.