JP2522549Y2 - Folding ladder - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a folding ladder used to evacuate each floor between high-rise buildings, ordinary houses, collective housing, and hotels. .

[Conventional technology]

In general, in the event of a fire in a high-rise building, other emergencies, etc., go down from indoors to outdoors, down to a veranda etc. to the floor immediately below the upper floor, or conversely, go up and down to evacuate to the upper floor It is known that an evacuation device equipped with a folding ladder is installed on a permanent basis. This evacuation device is provided as a hatch composed of a frame having a folding ladder that can be extended only in an emergency, not only for safety and appearance but also for crime prevention, and having a cover plate on the floor and ceiling, In many cases, the floor cover plate and the ceiling cover plate are simultaneously opened, and the folding ladder stored in the hatch is extended and lowered on the veranda on the lower floor.

Conventionally, in this type of evacuation device, there is an inconvenience and uneconomical problem that an evacuation port cannot be installed in a new building or in an existing building without remodeling work because an evacuation opening must be formed in the building itself. Also, it is conceivable that it is always installed on the veranda or handrail of the building, but it will be protruded outside, it will not only look bad, it will not only damage the appearance, but it will be exposed to wind and rain, which is a security problem, In particular, even if it is positioned vertically, it will not be able to take quick action because it is not stable because it is unstable and lacks stability because it is not stable because it is shifted to the wall side even if it is positioned in the vertical direction. Occasionally, there is no guidance section, which often gives evacuees a sense of anxiety, and there is also a problem in terms of safety.

The purpose of the present invention is to solve the problems of these conventional evacuation ladders and to provide an inexpensive folding ladder for evacuation that can be easily and safely installed even in an existing building without damaging its appearance. Is what you do.

[Means for solving the problem]

In the present invention, in order to achieve the above-mentioned object, a plurality of connecting frames each composed of a vertical crossbar (1) (1) and a horizontal crossbar (2) serving as a step are provided on each side of the vertical crossbar (1) (1). In the folding ladder in which each connecting frame body can take an extended posture by being sequentially connected to each other so as to be able to expand and contract in the vertical direction, nut attachment portions (5) and (5) are provided at the upper end of the uppermost vertical rail (1). ,
The nut mounting portion (5), (5) threaded rod ₍₆₁₎ to ₍₆₁₎ screwed,該螺rod _(61), the arm (6) at the upper end (6 _1),
(6) is detachably screwed into the arm (6), (6)
Hook pieces (7) and (7), which are formed in a hook shape, are provided at the other end side of the vertical crossbar (1) with adjustable distances by fasteners (8) and (8). An abutment (9) is provided so as to be able to protrude and retract through a turnbuckle (10) toward the back side of the vertical rail (1).

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

The folding ladder according to the present invention, as shown in FIG.
A plurality of connecting frames are connected to each other via the vertical rails 1 and 1 so as to be able to expand and contract mutually in the vertical direction (the vertical direction in FIGS. 1 and 3), and each connecting frame can take an extended posture. attaching respective nut mounting portions 5 to the upper end portions of the pair of vertical bars 1, threaded rod 6 _1, 6 ₁ screwed respectively to the pair of nut mounting portions 5, of the pair screw杆螺rod 6 _1, 6 Arms 6 and 6 are detachably screwed to the upper end of ₁ , and hook pieces 7 and 7 are provided at the other end of the arms 6 and 6 with fasteners 8 and 8 so that the distance therebetween can be adjusted. And the vertical bar 1, 1
A contact piece 9 is provided on the lower outer side of the lower part via a turnbuckle 10 so as to be freely protruded and retracted, and is configured to have autonomy.

Each connecting frame body includes a pair of vertical rails 1 and 1 spaced apart on both right and left sides, and a horizontal rail 2 for a step is horizontally and integrally installed between the pair of vertical rails 1 and 1. As a result, it is formed in a U-shape or an inverted U-shape.

The lower end of each of the vertical rails 1 has a predetermined angle, for example, 3 to 5 from the rear side (the left side in FIG. 2) to the front side (the right side in FIG. 2).
Is the angle in the inclined bent degrees, the front near side to the protruding lower portion forms a bent portion 1 _1, ring member 3 functions as a support bracket for the bent portion 1 ₁ is pinning or welding Is fixed. The ring body 3 is formed of an annular or frame-shaped metal band, and has an inner outer surface fixed to the bent portion ₁₁ by welding or pinning. Interior space and the ring body 3 and the bent portion 1 ₁ is partitioned and formed is formed as a fitting portion 4, inside this fitting portion 4, and the vertical bars 1 of the connecting frame adjacent located below the upper and lower It is slidably inserted in the direction.
Thus, prying when lever support ring 3 of the bent portion 1 ₁ to傾設, folding ladder as a form curved folding the sliding mating surfaces of vertical bars 1 adjacent connecting frame member is extended It can be fixed by the action, the independence can be secured, and it can be prevented from shaking, which is convenient.

Each of the horizontal rails 2 is formed so that its length dimension is gradually shortened when the folding ladder is extended, and is a square tubular step board.
2 ₁ is mated. The footplate 2 ₁ is constructed in the structure of the anti-slip material, or anti-slip.

Also, a pair of ring bodies 3 of the connection frame body located at the uppermost stage
Of fitting the insertion portion 4 is respectively fixed erected by stop welding or pins bent portion 1 ₁ of the vertical bars 1, cylindrical directed vertically to the upper end of the pair of vertical bars 1, 1 nuts and mounting unit 5 is attached respectively, are engaged removably threaded through a threaded rod ₆₁ the arm 6 is made of a bolt in the respective nut mounting portion 5. In addition, 6 ₂ is a bolt head of the threaded rod 6 _1.

The arm 6 is formed to be bent, and a screw portion having a nut function is provided on a lower outer surface thereof,
A plurality of screw holes are bored side by side at the upper free end, and hook pieces 7 are screwed into the screw holes via a plurality of fasteners 8.

The hook piece 7 is bent and formed substantially in an L shape or a hook shape.
Its Some are bored side by side a plurality of stator mounting holes _81, any of a plurality of stator mounting hole ₈₁ in the plurality of stator mounting hole _81, a plurality of threaded杆用arm 6 A plurality of fasteners 8 are to be threaded through any of the plurality of holes. By this screwing action, the distance between the arm 6 and the hook piece 7 is adapted to the wall thickness, and the fixing position can be appropriately selected and changed (see FIG. 3). 3A is an outer wall, and a hook piece 7 is provided on the upper portion of the outer wall A.
Is to be caught.

Further, a pair of vertical rails 1 of the connecting frame body located at the uppermost stage,
On the lower outer surface of 1, a piece 9 has a turnbuckle 10 and a screw rod.
11 is screwed through. The contact piece 9 is formed in a substantially U-shape, and a turnbuckle 10 (for example, a joint having a screw hole having a different screw direction) is attached to each of its free ends, and the turnbuckle 10 and the screw rod 11 are attached. With this adjustment, the contact piece 9 comes into position contact with the wall surface side of the outer wall A, and is used as a stator or a stopper for maintaining a gap between the folding ladder and the wall surface of the outer wall A.

Therefore, when using the ladder which is installed on the outer wall A of the veranda and is folded and stored, first, the arm 6 and the hook piece 7 are hooked on the upper part of the outer wall A, and according to the thickness of the wall. select a mounting hole _81, fixed in Shimezukeko 8, fixed screwed to the screw portion of the arm 6 by turning the screw head 6 _{and second} threaded rod _61, to adjust the turn buckle 10 hook After the piece 7 is brought into contact with the outer wall A and fastened and fixed, the stopper (not shown) of the ladder may be removed.

Then, due to its own weight, the folding ladder descends step by step as a bundle of the connecting frames, and reaches the lower floor to reach the first floor.
As shown in the figure, it is suspended and fixed to the veranda. In this extension process, each connecting frame body is fixed at the ring body 3 sequentially from the upper part to the lower part as going from the upper part to the lower part, so that each connecting frame body is located at the position as if it were placed on the ring body 3 of each horizontal part 2. The vertical rail 1 of the ladder can be easily lifted and lowered by the ring body 3 due to the weight of the user. Can be used as Further, the fastening can be reliably performed in correspondence with the wall surface of the outer wall A by the movement of the hook piece 7 and the protrusion amount of the contact piece 9.

[Effect of the invention]

As described above, according to the present invention, the vertical rails (1) are provided on both sides.
A plurality of connecting frames composed of (1) and horizontal rails (2) to be steps are sequentially connected to each other vertically and vertically with the vertical rails (1) and (1) so that the connecting frames can extend and contract. In the folding ladder that can be taken, a nut and nut mounting portion 5 (5) is provided at the upper end of the uppermost vertical rail ( ₁ ), and a screw (61) is screwed into the nut and nut mounting portion 5 (5). upper detachably screwed arm (6) on the screw rod _(61), interval adjustment hooks constituting the hook-shaped at the other end of the arm (6) and (7) in Shimezukeko (8) It is arranged freely, and a contact piece (9) is provided on the lower outer side of the vertical rail (1) toward the back side of the vertical rail (1) via a turnbuckle (10) so as to be freely retractable. When the evacuation ladder is not used, it can be stored inside the house in a compact form that is preferable from the viewpoint of storage, crime prevention, and appearance. Both the in use it can be screwed arm 6 to threaded rod _61, quickly allowed to position mounting the ladder in a house outside. In addition, since this piece is provided so that it can be protruded and retracted via a turnbuckle, the ladder can be firmly fixed by using it as a stator or stopper for maintaining the gap with the wall, and in addition to assembly work and maintenance and inspection. There is an effect that management is simple.

[Brief description of the drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a front view in an extended state, FIG. 2 is a side view thereof, FIG. 3 is a partial perspective view, and FIG.
FIG. 5 is a front view of the folded state, FIG. 5 is a side view thereof, and FIG. 6 is a side view of a part of the used state. 1 ... vertical bar, 1 ₁ ... bent portion, 2 ... horizontal bar, 3 ... ring body, 4 ... fitting portion, 5 ... nut mounting portion, 6 ... arm, 6 ₁ ... screw rod , 7 ... hook piece, 8 ... fastener, 9 ...
… This piece, 10 …… turnbuckle.

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of connecting frames each comprising a vertical rail (1) (1) and a horizontal rail (2) as a step can be extended and contracted in the vertical direction with the vertical rails (1) and (1) respectively. In the folding ladder in which each connecting frame body can take an extended posture by being connected to the upper frame, nut attachment portions (5) and (5) are provided at the upper end of the uppermost vertical rail (1), and the nut attachment portion (5) is provided. , (5)
Threaded rods (6 ₁ ) and (6 ₁ ) are screwed into the screw rods (6 ₁ ) and (6 ₁ ).
Arms (6) and (6) are detachably screwed to the upper end of the arm, and hook pieces (7) and (7) having a hook shape are fastened to the other ends of the arms (6) and (6). The gaps (9) are arranged freely by the children (8) and (8), and the contact piece (9) is turned on the outer side below the vertical rail (1) toward the back side of the vertical rail (1). A folding ladder, characterized in that it is provided so that it can be protruded and retracted through the bracket.