JPH0680000U - Evacuation ladder - Google Patents

Abstract

(57) [Abstract] [Purpose] This invention is an invention of an evacuation ladder used in the event of a fire, etc. It provides a solid evacuation ladder that has a lock mechanism that holds it in a straight ladder after it is taken out. Invented as a preparation for. [Composition] Ladder made of lightweight material is alternately folded and stored in a storage case box. When used, the evacuation ladder can be taken out with one touch, the storage case box becomes a scaffold, a handle, and the ladder is gradually lowered. , The structure has a structure that automatically keeps it in a straight line and has a simple structure that is stable and can be used and handled by men and women of all ages.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an evacuation ladder used for emergency evacuation from the upper floor in accommodation facilities and households.

[0002]

[Prior art]

 Although the number of accidents due to fires has increased in recent years, it is obligatory to install a ladder for emergency evacuation in each room in general accommodation facilities. However, as many ladders that are installed are made up of ladders in a string state, as shown in Fig. 5, they are flexible and convenient for installation and storage, but in reality they are ladders. However, due to the flexibility of the string, the string is no longer in a straight line depending on the position of the center of gravity of the body, causing left / right and front / back swaying, which is unstable, and even the use of an emergency evacuation ladder is even dangerous. However, it was not used normally, and it did not appear on the surface as a problem.

[0003]

[Problems to be solved by the device]

 In the above conventional example, an unstable rope ladder with a sense of danger is constructed by the evacuation ladder of the present invention made of a light weight material, and normally folded and stored compactly in a storage case, and when used, the ladder is stretched in a straight line. It automatically becomes a stable and rigid rigid ladder like an ordinary ladder, and it provides a safe evacuation ladder most suitable for storage and use as an emergency evacuation ladder.

[0004]

[Means for Solving the Problems]

 The evacuation ladder of the present invention is a ladder made of a lightweight material.In the permanent installation, the evacuation ladder is alternately folded compactly near the evacuation site such as the house's veranda and windows and stored in the storage case box at all times. If the ladder is installed and you need to evacuate due to an unexpected fire, you can remove the ladder with one touch and extend the folding part of the ladder, and the hinge part of the ladder automatically locks in a straight line and the rigid ladder. In addition, the storage case box has a structure that serves as a scaffold or a handle during evacuation, and it is possible to inexpensively provide a robust ladder that is stable in structure.

[0005]

[Action]

 The evacuation ladder of the present invention is used not only for general accommodation facilities, but also for ordinary households, a storage case box containing the evacuation ladder is always fixed near the balcony frame or window frame where emergency evacuation from the upper floor is required. If the stairs cannot be used due to an unexpected disaster and an emergency evacuation is required, open the hanging bracket of the storage case box of the evacuation ladder, quickly take out the alternately folded evacuation ladder, and straighten the ladder. When extended, the hinge has a function of automatically locking so that it will not be bent again, and the storage case box has a structure that can be used as a scaffold for evacuation and as a handrail. Therefore, the present invention is not unstable like the conventional rope ladder, but is a rigid rigid horizontal structure, so that it is possible to evacuate in a stable manner in the same way as when getting off a normal ladder even in an emergency. It can be used with peace of mind regardless of age or sex, and it is possible to provide an inexpensive structure.

[0006]

【Example】

 The structure and operation of a specific embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 (A) is a perspective view of a storage case box accommodating the ladder of the present invention, and FIG. 1 (B) is a vertical sectional view of the storage case box. Further, FIG. 2A is a side view in the middle of taking out the folded ladder from the storage case box. FIG. 2 (B) is a side view when the evacuation ladder is extended to the use state in a straight line state. FIG. 3 is a diagram illustrating the configuration of one unit of the components that make up the ladder. FIG. 4 is an explanatory diagram of a hinge portion that constitutes a ladder. First, the structure of the storage case box will be described. In FIGS. 1 (A) and 1 (B), the storage case box 1 has an integrated structure in which left and right side plates 2 and a bottom plate 3 are fixed. 4 is rotatably connected to the storage case 1 by a hinge 5, the upper plate 4 is provided with a handle 6 and a hanging metal 7, and the front plate 8 is connected by a hinge 9. Is also rotatably connected to the bottom plate 3, and the front plate 8 is provided with a hooking metal fitting 10 so as to engage with the hooking metal fitting 7 of the upper plate 4. The last end 11 of the ladder of the evacuation ladder 15 that is folded alternately is fixed to the storage case box 1 and stored in the base box. Next, how to take out the evacuation ladder 15 folded and stored in the storage case box 1 will be described with reference to FIGS. 2 (A) and 2 (B). In FIG. 2, the storage case box 1 fixed to the balcony crosspiece or the window frame vicinity 16 where the house is easily evacuated is shown. To take out the evacuation ladder, remove the hook metal fitting 10 attached to the front plate 8 of the storage case 1 from the hook metal fitting 7 of the upper plate 4, and use the hinge 9 to remove the front plate 8 by the arrow in FIG. It will open in the direction and the evacuation ladder 15 will be gradually lowered. FIG. 2 (A) is a diagram showing a state in which the evacuation ladder 15 is being lowered, and FIG. 2 (B) shows a state in which all the evacuation ladders 15 are lowered to be in a straight line state. Thus, the final end 11 of the evacuation ladder 15 is fixed to the storage case box 1, the ladder descends along the bottom plate 3 of the storage case box 1, and the upper plate 4 is attached to the storage case box 1. Due to the fixed hinge 5, it falls in the direction of the arrow and becomes vertical. That is, the bottom plate 3 serves as a scaffold for evacuating, and the handle 6 on the upper plate serves as a handle for getting off using the evacuation ladder 15 in an emergency evacuation. Next, the structure of the evacuation ladder 15 will be described with reference to FIG. FIG. 3 illustrates the structure of one unit that constitutes the evacuation ladder. A shaft 21 and a shaft 22 are press-fitted and fixed to an end portion of the ladder step 20 so as to be integrated with the ladder step 20. End holes of the inner bar 23 and the inner bar 24 in the shaft 21 and the shaft 22. The ladder step 20 and the inner rails 23 and 24 are tightened with the nuts 25 and 26 by nuts. The end holes of the outer rails 27 and 28 are further inserted into the shafts 21 and 22 to separate them. The nuts 29 and 30 are assembled to be freely rotatable. Next, the structures of the ladder steps 20, the inner rail 23, and the hinge portions of the outer rail 27 will be described in more detail with reference to FIG. FIG. 4 shows the hinge portion locally. As described above, the end face hole 31 of the inner bar 23 is inserted into the shaft 21 press-fitted into the ladder step 20, and the nut 25 is used to insert the ladder step 20 and the inner bar. 23 is fixed and integrated. As shown in FIG. 4, the tip portion 32 of the shaft 21 is a shaft obtained by cutting two surfaces of a round shaft, and the end hole 33 of the outer bar 27 is an elongated hole in which one is circular as shown in the drawing. Therefore, when the end hole 33 of the outer bar 27 is inserted into the shaft 32 that has been cut on two sides, when the outer bar 27 is pulled with respect to the inner bar 23 in the direction in which the arrow extends, the outer bar 27 is cut on two sides. The cut portion of the shaft 32 is moved to the long hole portion of the end hole 33 of the outer rail 27, and the inner rail 23 and the outer rail 27 are locked in a straight line state, and as shown in FIG. 4 (A). When the outer rail 27 is pushed into the circular portion of the elongated hole of the arrow, the shaft 32 whose two surfaces are cut becomes rotatable and can be folded as shown in FIG. 4 (A). FIG. 4 has described the structure of the hinge portion between the outer rail 27 and the inner rail 23. Of course, the hinge portions of the left and right outer rails and the inner rail that compose the evacuation ladder have the same structure. The same structure is used for each hinge part of the folding part of each step of the evacuation ladder. Although aluminum was used as the constituent material of the ladder of the specific example, the same applies when other lightweight steel plates or organic materials are used. As described above, the evacuation ladder of the present invention is compactly housed in a storage case box, and when used, this storage case box serves as a scaffold or handle, and the ladder becomes a rigid rigid ladder with a straight line. The products that can be used with peace of mind have a simple structure and can be supplied at low cost.

[0007]

[Effect of device]

 The evacuation ladders of the present invention are alternately compactly folded and installed constantly in the vicinity of the evacuation area such as the balcony and windows on the upper floor of the house, and for emergency use, the evacuation ladder folded from the upper floor can be lowered with a single touch to evacuate. When the ladder becomes straight, the two-sided cut shaft is automatically held in a straight line with the slotted hole, and it has a robust ladder structure, which is extremely easy to operate and can be quickly handled by people of all ages. In addition, the evacuation ladder of the present invention has a structure capable of mass production and can be supplied at low cost. Therefore, it is always installed on the upper floors of ordinary households, not to mention accommodation facilities, in case of an unexpected disaster. It is highly effective.

[Brief description of drawings]

FIG. 1A is a perspective view of a storage case box containing a ladder of the present invention. (B) is a longitudinal sectional view of the storage case box of the present invention.

FIG. 2A is an explanatory diagram when a ladder is taken out from a storage case box. (B) is a side view when the evacuation ladder is in use.

FIG. 3 is an explanatory diagram of one unit of the evacuation ladder of the present invention.

FIG. 4 is an explanatory view of a hinge portion which constitutes the ladder of the present invention.

FIG. 5 is a diagram of a conventional rope ladder.

[Explanation of symbols]

 1 Storage Case Box 3 Bottom Plate 4 Top Plate 8 Front Plate 15 Evacuation Ladder 20 Ladder Step 21 Shaft 23 Inner Rail 25 Nut 27 Outer Rail 32 Shaft with Two Faces Cut

Claims (3)

[Scope of utility model registration request] 1. A ladder capable of being alternately folded and stored, wherein a hinge of a folding portion has a mechanism for automatically maintaining a linear state when the ladder is extended and brought into a linear state. ladder. 2. A ladder storage case having a function of a scaffold and a handle when the case box for storing the alternately foldable ladder is used as a ladder. 3. A ladder which can be alternately folded,
A foldable ladder characterized in that the final end of the ladder is fixed to the storage case box.