JPS6013120B2 - Auxiliary ladder device in evacuation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary ladder device in an evacuation device that allows evacuation from an upper-floor balcony to a lower-floor balcony to a safe place in the event of an emergency such as a fire.

In general, this type of evacuation equipment consists of an evacuation ladder that extends and descends from the upper and lower balconies to the lower balcony when in use, a hanging device that supports this evacuation ladder on the upper balcony, and a hanging device that is attached to the lowest end of the evacuation ladder. The auxiliary platform is pivotably supported, and the auxiliary platform is locked almost parallel to the reduced evacuation ladder in case of inconvenience, and when in use, this auxiliary platform is linked to the extension movement of the evacuation ladder to extend the evacuation ladder to the balcony on the lower floor. It is equipped with a locking and unlatching mechanism that swings out almost horizontally toward the handrail.

Ru. However, in such evacuation equipment, the auxiliary platform installed at the lowest end of the evacuation ladder is located at approximately the same height as the Tetanuma Kasagi, so the The person must jump from the auxiliary platform to the balcony on the lower floor, which can be dangerous if the balcony on the lower floor is narrow or the height of the handrail is high, especially for evacuees who evacuate in a hurry during an emergency. Even if the balcony on the lower floor is wide and the handrail is low, the problem of danger cannot be solved.

This invention has been made in view of the above circumstances, and by attaching an auxiliary ladder to the tip of the auxiliary platform that can be engaged and disengaged as the evacuation ladder is extended and lowered and the auxiliary platform is swung out, it is possible to safely and quickly remove the evacuation ladder from the auxiliary platform. The first purpose was to make it possible to get down to the balcony on the lower floor when it is inconvenient. Another object of the present invention is to provide an auxiliary ladder device for an evacuation device, which has a second purpose of making it possible to stop the evacuation ladder during its extension operation.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Figures 1 and 2 show how the evacuation equipment equipped with the auxiliary ladder device of the present invention is used; in the figures, tl indicates the evacuation ladder;
2 is a hanging device to support this evacuation ladder 1 on the balcony A on the upper floor. 3 is an auxiliary platform attached to the lowest end of the evacuation ladder. Turtle is an auxiliary platform 3 that is used as an evacuation ladder that has been reduced in size for inconvenience. A locking/disengaging mechanism that locks parallel to the stove and swings out the auxiliary stand 3 almost horizontally when in use. 5 indicates an auxiliary ladder attached to the tip of the auxiliary stand 3.

The evacuation ladder 4 is constructed by connecting a large number of hollow vertical rungs la with elliptical cross sections with different diameters in a nested manner, and each vertical rung a.
It is an extendable ladder with a horizontal footrest extending in the short diameter direction at the lower end, and a vertical rung la at the base end is pivoted to one side of the storage frame 6, so that it can be used as a storage frame when not in use. When in use, the upper lid 7 and the lower lid 8 close the upper and lower opening ends of the storage frame 6 and are moved via a link device (not shown), which is compressed and stored in a storage frame 6. It is designed to be extended and lowered between A and balcony B on the lower floor.

As shown in FIG. 6, the hanging device 2 has a frame holder installed inside the handrail C of the balcony A on the upper floor, one end of which is attached to the frame 9, and the end of the holder attached to the base of the storage frame 6. A link-shaped arm 10 is pivotally attached at one end, and a bracket 11 is pivotally attached at one end to the base of the balcony A.
It is composed of a link-shaped arm 13 that is attached to the tip of the support piece vine 2 whose other end is fixed to the tip of the storage frame 6, and is located outside the handrail C. Storage box 6
It is stored in an upright position inside the handrail C of the handrail C, and when in use, as shown in Fig. It is formed.

As shown in FIG. 2, the auxiliary platform 3 provided on the side leg b for footrests at the lowest end of the evacuation ladder 1 is provided with a support 14 with its base 14a and rear end 14b bent upward. At the same time, this support member 4 is rotatably supported by a gutter shaft 5 arranged in the longitudinal direction of the horizontal support member lb. A hook portion tortoise 6 is provided which locks onto the cap F of the handrail E of the balcony on the lower floor and prevents the extended evacuation ladder 1 from turning unnecessarily.

Furthermore, a treadle 4c is provided between these two supports 8 and 4. As shown in FIGS. 3 and 4, this auxiliary platform 3 engages in a state parallel to the vertical ladder a during times of inconvenience and during the extension of the evacuation ladder 1.
In use, a locking/disengaging mechanism turtle is provided to release the evacuation ladder in response to the end of the evacuation ladder 1's extension operation. This locking/disengaging mechanism 4 is constructed by bending the tip of the guide part a, which is fixed at the base of the support 141 of the auxiliary base 3, outward in a substantially U-shape on both sides of the auxiliary base 3. An open part 18b is formed with its tip fixed to the base bracket a of the auxiliary stand 3, and the stopper support 8 suspended on the auxiliary stand 3 and the vertical frame at the lowest end to which the auxiliary stand 3 is attached are formed. It consists of a stopper turtle 7 that protrudes from the horizontal footrest b of the vertical sill a2 which is positioned above the latches. Each vertical turtle a
, turtle a... is vertically 4-shaped, the stopper receiver 8 provided on the auxiliary stand 3 locks the stopper turtle, and the auxiliary table 3 is almost parallel to the vertically-shaped turtle a. Also, as shown in Fig. 3, when each longitudinal bar 8a, wing a... extends and the vertical bar a at the lowest end extends, it "contacts the stopper 7". However, as the stopper receiver 18 moves downward, the stopper wealth 7 slips out from the opening 1 flea b formed at the tip of the stopper receiver turtle 8 and is released from the lock. The L auxiliary platform 3 assumes a nearly horizontal position, and the hook portion vine 6 provided at the tip of the L auxiliary platform 3 engages with the handrail E of the balcony B on the lower floor.The hook provided at the tip of the auxiliary platform 3 As shown in FIG. 2, the auxiliary ladder 5 attached to the part 16 has a tread g and a cylindrical side part 2 which is formed of a cylindrical body and has elongated slide holes 2Qa and 20b on its inner and outer sides, respectively.
8, a middle ladder member 24 consisting of a tread 22 and a side plate 23 having a slide elongated hole 23a, and a lower ladder part 27 consisting of a tread 25 and a side plate 26. It consists of

At this time, a ball pin 28 provided at the tip of the hook part 16 of the t-auxiliary stand 3 is fitted into the slide elongated hole 20b formed on the outer surface of the cylindrical side part 20 of the upper ladder member 21, and the auxiliary ladder 5 is suspended so that it can slide and be reversed. Furthermore, connecting pins (not shown) that connect both ends of the tread 19 of the upper ladder member 21 and the upper ends of both side plates 23 of the middle ladder member 24 are formed on the inner surface of the cylindrical side portion 20. A fixing pin 29 extends movably through the J-ride elongated hole 20a and fixes both ends of the tread 22 of the middle ladder member 24 and the upper ends of the side plates 26 of the lower ladder member 27. The ladder member 24 is slidably played in slotted slide holes 23a formed in the side plates 23 of the ladder member 24. When the auxiliary ladder 5 constructed in this way is inconvenient, as shown in FIG. is housed between the side plates 23 of the middle ladder member 24, and then pushes up the lower ladder member 27 and the middle ladder member 24, and lifts them together with the tread 19 of the upper ladder member 21 into the upper ladder member 2.
It is housed between both cylindrical side parts 28 of 1, reduced in size, and suspended from the hook part 16 by a mari pin 28.

In use, as shown in FIG. 5, the upper ladder member 21 slides while being reversed about the track pins 28, and extends and descends the ladder sections 24 and 27 in sequence. On the other hand, in the present invention, the auxiliary ladder 5, which is retracted and suspended from the hook part 16, can be used not only when it is inconvenient, but also during the extension and descent of the evacuation ladder 1. A locking device 30 is provided for fixing in the middle.

In other words, this locking device 30', as shown in FIGS. 3 and 5,
The locking rod 32, which is one of the locking means, is movable forward and backward toward the suspended auxiliary ladder 6. 2
A locking recess, which is the other locking means, is formed in the opposing portion of the connecting portion village 34 that connects the upper end of 0, and an elastic recess that is connected to the support cover 31 at one end and to the locking bar 32 at the other end. The means, that is, the elastic force of the spring 33 constantly presses the locking rod 32 toward the side of the auxiliary member 5, so that the locking recess 35 of the connecting portion village 34 and the sub-stop rod 32 are engaged with each other. ing. In this case, if a tapered portion is formed at the tip of the locking rod 32, the engagement becomes smooth. In addition, one end of the locking rod 32 is attached to the lower end of the lowest end of the evacuation ladder 1 at an appropriate distance from the pivot 15. The continuous driving mill 36 is connected to the final stage of the extension operation of the evacuation ladder 1, that is, when the lowest vertical ladder 1a is extended and lowered, and the auxiliary platform 3 accompanying this operation.
With the spreading operation, the drive element 35 is pulled against the spring 33 to release the engagement between the T-locking frame 32 and the locking recess 35. 38 is a stopper pin for preventing the locking bar 32 from being pulled out.

In the above embodiment, the locking formation 32 is provided on the side of the auxiliary platform 3, and the locking recess 36 is provided on the side of the auxiliary ladder 5. A locking rod may be disposed on the side of the auxiliary ladder 5, so that the child locking recess can be moved forward and backward with respect to the locking birch.

Furthermore, these locking means are not limited to the locking rod 32 and the locking recess 35, but may be any convex portion and a concave portion that engages with the convex portion. Furthermore, in the above embodiment, the auxiliary appearance 5 is formed so that it can be expanded and contracted in three stages.
The number of steps of the auxiliary ladder 5 can be determined as appropriate depending on the height of the handrail E on the lower floor. A suitable number of horizontal gaps are provided between a pair of vertical gaps connected by a pivot to make it foldable, so that when the hook part turtle 6 is locked to the cap F of the handrail E on the lower floor, it collides with the cap F. It may also be a folding auxiliary ladder that swings and hangs down inside the handrail E.Next, the mode of use of this invention will be explained.

First, take the storage frame 6 that stores the evacuation ladder 1, which is placed inside the handrail C of the balcony A of everyone above 5, above the handrail C, support it horizontally with the hanging device 2, and then lift it up and down. When the lids 7 and 8 are opened, the tip of the evacuation ladder 1' stored in the storage frame 6 will rotate toward the balcony B on the lower floor, and each vertical rung la, la2, la , extends and descends.

At this time, when the vertical rung la at the lowest end extends from within the vertical rung la2 above it, the stopper receiver turtle 8 provided on the auxiliary stand 3 descends together with this auxiliary stand 3, and the footrest of the upper vertical rung la2. The auxiliary platform 3, which was detached from the stoppers 7 protruding from both ends of the evacuation ladder 1b and was locked almost parallel to the evacuation ladder 1, rotates due to its own weight toward the balcony B on the lower floor. Accordingly, point c in FIG. 3 draws a trajectory Q around the pivot 15, but on the other hand, one end is fixed to the auxiliary horizontal beam 37 at point b, and the L end is fixed to the locking rod 32. The part of the driving element 36 arranged in sliding contact with the horizontal bar 14d is pushed by the horizontal bar 14d and rotates around point b as the center of rotation.
If you draw a trajectory Q beyond the point and move to the position shown by the chain line in Fig. 3, the distance (L2) between point b and the horizontal bar 14d at that position is longer than the distance (L) in the stored state Z. Therefore, the drive element 36 is pulled by the difference (L). As a result, the drive element 36 is pulled against the spring 33 and the lock consisting of the locking bar 32 and the locking recess 35 is pulled. Since the engagement of the locking device 30 is released, the auxiliary ladder 6, which has been fixed up to 2 and is suspended upside down by the ball pin 28' at the tip of the hook part 16, is moved to the Kasagi F' of the handrail E.
When the upper ladder member 21 hits and reverses, it slides on the shaft 2 pin 28 of the hook portion 6 along the slide elongated hole 20b provided on the outer surface of the cylindrical side portion 28 on both sides and falls.
The middle ladder member 24 and the lower ladder member 27 also extend telescopically from inside the upper ladder member 21 due to their own weight, and are suspended inside the handrail E. In addition, in order to store the evacuation ladder box, the auxiliary platform 3, and the auxiliary ladder climbing 3 in the storage frame 6, as shown in FIGS. After hanging the hook part 161, the auxiliary platform 3 is rotated vertically across the evacuation ladder 1. At this time, since the drive element 36 loosens, the spring 333 acts to protrude the locking rod 32.
2 is again engaged with the locking recess 35 to prevent the auxiliary ladder 5 from swinging. Then, each vertical dimension la, extending downward,
la... is pulled up by a lifting device (not shown), etc.
Place the stopper receiver turtle 840 provided on the auxiliary stand 3 into the stopper 7.
, and further rotate the tip end of the reduced evacuation ladder 1 toward the base end of the storage frame 6 to store the evacuation ladder 1 together with the auxiliary platform 3 and the auxiliary ladder 5 in the storage frame 6. After closing the upper and lower clusters 7 and 8, pull the storage frame 6 toward the inside of the handrail C of the balcony A on the upper floor and store it in an almost upright state inside the handrail C using the arms 10 and 3. As explained in , the auxiliary ladder device of this invention is ``During use, the auxiliary ladder is installed from the tip of the auxiliary platform to the inside of the handrail of the balcony on the lower floor. The evacuees do not need to jump from the auxiliary platform placed at almost the same height as the handrail to the balcony on the lower floor. Even if the balcony on the lower floor is narrow and the handrail on the lower floor is high, evacuees on the upper floor can safely and quickly evacuate to a safe place on the lower floor.

Further, according to the device of the present invention, since the auxiliary ladder is fixed by the locking device not only when it is inconvenient but also when the evacuation ladder is extended and lowered, it is possible that the auxiliary ladder may swing and interfere with the extension operation of the evacuation ladder. This allows the evacuation equipment to operate smoothly and reliably without causing injury or damage. The auxiliary ladder device of the present invention can also be applied to other types of evacuation equipment, and the evacuation equipment is not limited to those of the above embodiments.

[Brief explanation of the drawing]

Fig. 2 is a side view showing the state in which the evacuation device equipped with the device of this invention is used, Fig. 2 is a perspective view showing its rhombus, and Fig. 3 is a state in which the auxiliary platform and auxiliary ladder are in operation in case of inconvenience. Fig. 4 is a side sectional view showing the storage state, Fig. 5 is a side view showing the relationship between the auxiliary platform and the auxiliary ladder during use, and Fig. 6 shows the storage frame with the handrail. FIG. 1...Evacuation ladder, 2...Hanging device, 3...Auxiliary platform 4...Latching/disengaging mechanism, 5...To the auxiliary ladder!6...Hook part, 3Q...Locking device, 3rd unit...Support cover" 32...Locking rod (Locking means)
33... Spring (elastic means), 35... Locking recess (locking means), 36... Driving millet. Screen 1 Figure 2 Screen Screen Gun 3 Figure Shigeru 5 Screen Screen 6

Claims (1)

[Claims] 1. An evacuation ladder that extends and descends from the balcony on the upper floor to the balcony on the lower floor when in use, a hanging device that supports this evacuation ladder on the balcony on the upper floor, and a base that rotates to the lowest end of the evacuation ladder. An auxiliary platform is pivotably supported and has a hook portion at its tip that engages with the handrail of the balcony on the lower floor, and this auxiliary platform is locked approximately parallel to the evacuation ladder that is contracted when not in use, and when in use. In an evacuation device equipped with a locking/disengaging mechanism that swings out the auxiliary platform almost horizontally toward the front of the balcony on the lower floor in conjunction with the extension operation of the evacuation ladder, the end of the hook portion formed on the auxiliary platform expands and contracts. A locking means consisting of two parts that engage and disengage from each other is provided on opposing parts of the auxiliary ladder and the auxiliary platform, which are contracted when not in use, so that the evacuation ladder can be extended when not in use and when the evacuation ladder is extended. In addition to preventing the auxiliary ladder from slipping out, this locking means includes a driving cable having one end connected to a position above the lowest end of the evacuation ladder and having an appropriate distance from the center of swing of the auxiliary platform. and releasing the engagement of the locking means from the other end of the driving cable as the auxiliary platform swings out after the evacuation ladder is extended and lowered, thereby allowing the auxiliary ladder to extend and lower. Auxiliary ladder device in equipment.