JP3170729B2 - Ladder support structure for evacuation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder support structure for an evacuation device, and more particularly, to a storage frame attached to a hole formed in a slab such as a floor or a veranda, and a storage frame inside the storage frame. The present invention relates to a ladder support structure for an evacuation device, comprising a pantograph ladder that is folded and stored.

[0002]

2. Description of the Related Art In general, evacuation devices of this type include floors,
A storage frame attached to a hole formed in a slab such as a veranda, upper and lower lids pivotally attached to the floor side and the ceiling side of the storage frame, respectively, and are folded in the storage frame. When it is stored and the upper and lower lids are opened,
It is known to have a pantograph ladder that extends to or near the floor below the floor.

[0003] In the evacuation device configured as described above, the ladder has a structure in which a pair of right and left telescopic bodies having a number of vertical rails pivotally connected in a pantograph manner are connected by a horizontal rail for stepping. The uppermost part of the ladder is rotatably supported by a ladder receiver fixed in the storage frame. Since the ladder needs to have an extension length corresponding to the height of the building to which the ladder is attached, a multi-stage ladder is used as the height of the building is higher. Therefore, the higher the floor height of the building, the higher the folding height of the ladder to be installed, and the above-mentioned ladder receiver needs to have a large height according to the folding height of the ladder. This is because, in addition to the function of pivotally supporting the ladder, the ladder receiver has a function of preventing rattling of the ladder in the stored state and a function as a guide member when extending the ladder. Therefore, in the conventional evacuation device of this type, each time the number of ladder stages is different, for example, 8, 9, 10,. I was

[0004]

However, the above-mentioned ladder support is one of the various parts constituting this kind of evacuation device, which requires a large number of processing steps, and is specially adapted to ladders having various steps. There is a problem that manufacturing as a product leads to an increase in the cost of the entire evacuation device.

The present invention has been made in view of the above circumstances, and provides an evacuation device in which a ladder receiver configured for a predetermined number of ladders is extended to a multi-stage ladder without impairing the guiding smoothness of the ladder. It is an object of the present invention to provide a ladder support structure.

[0006]

In order to achieve the above object, a ladder support structure for an evacuation device according to the present invention includes a storage frame attached to a hole formed in a slab such as a floor or a veranda, and a storage frame attached to the storage frame. Upper and lower lids pivotally attached to the floor side and the ceiling side of the frame, respectively, and when the upper and lower lids are folded and stored in the storage frame and the upper and lower lids are opened, the lower floor or the floor thereof An evacuation device comprising a pantograph-type ladder extending to the vicinity, wherein the ladder is fixed to the inner surface of the storage frame to rotatably pivot the uppermost vertical rail of the ladder and extend the ladder. A lower ladder support formed so that the guide surface can be continuously extended downward is attached to a lower portion of the ladder support constituting the guide surface (claim 1) .

In the present invention, it is preferable that the lower ladder receiver is mounted so that its mounting position with respect to the ladder receiver can be adjusted stepwise up and down (claim 2) .

[0008]

According to the ladder support structure of the evacuation device of the present invention configured as described above, the lower portion of the ladder support fixed to the inner surface of the storage frame and rotatably supporting the uppermost vertical rail of the ladder. By attaching a lower ladder receiver formed so that the ladder guide surface of the ladder receiver can be continuously extended downward, the ladder receiver configured for a predetermined number of ladders impairs the ladder guide smoothness. Can be extended for multi-stage ladders without the need. Therefore, it is not necessary to separately manufacture the ladder receiver, which is a component with a large number of processing steps, as a dedicated product depending on the number of steps of the ladder, and it is possible to reduce the manufacturing cost of the entire evacuation device.

Also, the lower ladder receiver is vertically moved with respect to the ladder receiver.
Ladder support
To adjust the position of the lower ladder support
Therefore, it is possible to mount ladders of various steps.
The height of the entire ladder support part consisting of the ladder support and the lower ladder support
The dimension can be made as small as possible for each ladder step.
Can reduce the height of the storage frame.
You.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view of an evacuation device having a ladder support structure of the present invention in use, FIG. 2 is an enlarged perspective view of the ladder support structure, FIG. 3 is a sectional view of the evacuation device in use, and FIG. The perspective view of the storage state of a ladder is shown.

The evacuation device includes a storage frame 2 attached to a hole 1a formed in a slab 1 such as a floor or a veranda, and upper and lower pivots attached to the floor side and the ceiling side of the storage frame 2, respectively. The lower lids 3, 4 and the upper and lower lids 3, 4 are connected to each other, the lower lid 4 is opened and closed in conjunction with the opening and closing of the upper lid 3, and the upper lid 3 is fixed and maintained substantially upright when opened. And a plurality of vertical rails 6a, 6
a ... a pair of telescoping bodies 6c, 6 pivotally connected in a pantograph manner
When a plurality of horizontal rails 6b, 6b,... for stepping are suspended at appropriate intervals between the upper and lower floors, the upper and lower lids are opened when the upper and lower lids are opened. A ladder 6 extending to or near the floor, and upper and lower lids 3,
After the ladder 4 is opened, the main part of the ladder 6 is constituted by a descent mechanism 7 for starting the descent of the ladder 6, controlling the extension / descent speed of the ladder 6, and raising and storing the ladder 6. In addition, between the above-mentioned elastic bodies 6c, 6c, connecting bar 2
5 and 26 are suspended, and the lowering mechanism 7 is connected to the lower connecting bar-2.
6, a winding wire 22 is connected.

In this case, the storage frame 2 has four side wall members 2c having an outwardly directed upper flange 2a at the upper end and bent outwardly shaped L-shaped lower flanges 2b at the lower end. The upper frame member 2d has a frame-like shape and has a substantially crank-shaped cross section mounted above the upper flange 2a. A mounting hole (not shown) for a fixing bolt 29 for fixing the ladder receiver 9 is formed in the side wall member 2c on the ladder mounting side. An L-shaped anchor member 18 is fixed to the outer surface of the other three side wall members 2c of the storage frame 2 by spot welding or the like.

A ladder receiver 9 is fixed to the inner surface of the side wall member 2c of the storage frame 2 constructed as described above.
The upper end of the vertical rail 6a at the top of the ladder 6 is rotatably supported by the bracket 91. In this case, the ladder 6 is a nine-stage ladder including nine horizontal rails 6b for stepping, whereas the ladder receiver 9 is manufactured according to the folding height of the eight-stage ladder. . For this reason, a lower ladder support 10 for extending the ladder support 9 is extended below the ladder support 9. In this case, the ladder supports 9 and the lower ladder supports 10
Constitute a guide surface of the connecting bars 25 and 26 when the is extended.

The ladder receiver 9 is provided on the side wall member 2 c of the storage frame 2.
A pair of angled brackets 91, 91 comprising a fixing portion 9a fixed to the inner surface of the ladder 6 and a mounting portion 9b of the ladder 6 bent at a right angle from one end of the fixing portion 9a; And a horizontal plate 92 for mounting the loosening mechanism 7 connected therebetween.

In this case, a vertically long hole 9c through which the fixing bolt 29 penetrates is formed in the upper part of the fixing portion 9a of the bracket 91, and a cutout groove 9d through which the fixing bolt 29 penetrates is formed in the lower end. ing. On the other hand, an oval-shaped mounting hole 9e for pivotally supporting the end of the uppermost vertical bar 6a of the ladder 6 is formed in the mounting portion 9b, and the uppermost portion is provided below the mounting hole 9e. Inclined support piece 9f for supporting vertical rail 6a in contact
A plurality of mounting holes 24 for mounting the lower ladder receiver 10 in a position-adjustable manner are formed in a portion below the middle portion of the fixing portion 9a. In this case, the mounting holes 24 are arranged at equal intervals in the vertical direction in four steps, and two rows in the front and rear, for a total of 8
It is formed in the place. The vertical distance between the mounting holes 24 is set equal to the height of one vertical rail 6a in a state where the ladder 6 is folded. The left and right intervals of the mounting holes 24 are set to be equal to the intervals of a pair of mounting holes 10f described later formed in the lower ladder receiver 10. Of the mounting holes 24 in the front row, only the uppermost mounting hole is the hole 9 formed by cutting and raising the inclined support piece 9f.
Due to the relationship with j, they are slightly shifted toward the rear row.

A wing piece 9i is bent inward at the tip of the mounting portion 9b, and a pivotally mounted attachment for pivotally mounting the guide member 12 near the wing piece 9i at the lower end. Hole 9
g is drilled. The guide member 12 is for maintaining the inclined state of the extended ladder 6, and when the guide member 12 is attached to the ladder receiver 9, the guide member 12 comes into contact with the back surface of the wing piece 9i and the guide member 12 rotates. Movements can be regulated. However, in this case, since the guide member 12 is attached to the lower ladder receiver 10 which is additionally provided below the ladder receiver 9, the mounting hole 9g for pivotally mounting the ladder receiver 9 is not used.

Next, the lower ladder support 10 is composed of a pair of mounting members mounted on the lower portion of the pair of brackets 91, 91.
A fixing portion 10a fixed to the inner side surface of the mounting portion 9b, and a mounting portion 10b of the guide member 12 bent stepwise inward from the lower end of the fixing portion 10a.

As shown in FIG. 5, two mounting holes 10f, 10f are formed in the fixing portion 10a at two positions corresponding to the front and rear intervals of the mounting holes 24 formed in the mounting portion 9b on the bracket 91 side. I have. However, one of the mounting holes 10f is formed in a horizontally long slot shape in consideration of the position of the mounting hole 24 in the uppermost row on the front row side of the bracket 91. On the other hand, a wing piece 10c is formed in the mounting portion 10b by bending the tip portion inward, and a guide member 12 is rotatably mounted near the wing piece 10c at the lower end. A pivot mounting hole 10d is formed, and when the guide member 12 is mounted on the mounting portion 10b, the guide member 12 can come into contact with the back surface of the wing piece 10c. The wing piece 10c is
When the lower ladder support 10 is attached to the ladder support 9,
The notches 9k formed at the lower portion of the side wing piece 9i are brought into contact with and engaged with each other. Further, the wing pieces 10c are bent at a plurality of positions in the vertical direction so that the upper end thereof enters the inside of the ladder receiver 9 as the mounting position of the lower ladder receiver 10 with respect to the ladder receiver 9 increases.
It has a curved shape with 0e formed. And
The wing piece 10c forms a guide surface 30 of a substantially continuous connection bar 25, 26 having no step at all times in cooperation with the wing piece 9i of the ladder receiver 9 regardless of the mounting position of the lower ladder receiver 10.
That is, by adding this lower ladder receiver 10,
The front side 9m of the wing piece 9i, which is the ladder guide surface of the ladder receiver 9,
It is continuously extended downward by the front side surface 10m of the wing piece 10c of the lower ladder receiver 10.

When the lower ladder receiver 10 is added to the ladder receiver 9, the mounting holes 10 f and 10 f of the lower ladder receiver 10 are connected to the mounting holes 2 before and after any one of the steps of the mounting portion 9 b of the bracket 91.
The lower ladder receiver 10 is fixed by fastening the fixing nut 28 to the fixing bolt 27 inserted from the lower ladder receiver 10 side after being aligned with 4, 4. In this case, the uppermost mounting holes 24, 24 are used when manufacturing an evacuation system having nine ladders 6, and in the case of an evacuation system having ten or more ladders 6, the lower tiers are successively lower. Mounting holes 24, 24 are used. In this case, since the mounting holes 24, 24 are provided in four steps vertically, by adjusting the mounting position of the lower ladder receiver 10, an evacuation device having ladders 6 of 9 steps to a maximum of 12 steps is manufactured. It is possible. FIGS. 6 and 7 show how the lower ladder receiver 10 is mounted when the number of ladders 6 is nine, and FIGS.

When the number of steps of the ladder 6 increases, the height of the storage frame 2 for storing the ladder 6 also needs to be increased.
If the thickness of the embedded portion of the storage frame 2 in the slab 1 exceeds the thickness of the slab 1, the construction becomes troublesome. Therefore, it is desirable to set the height of the storage frame 2 to the minimum size for each number of ladder steps. It is. In this regard, according to the ladder support structure of the present invention configured as described above, the mounting position of the lower ladder receiver 10 is adjusted stepwise each time the number of steps of the ladder 6 is different, for example, 9, 10,. By doing so, the ladder receiver 9 and the lower ladder receiver 10
Since the height dimension of the entire ladder receiving portion can be reduced as much as possible for each number of ladder steps, there is an advantage that the height dimension of the storage frame 2 can be reduced.

[0022]

As described above, according to the ladder support structure of the evacuation device of the present invention, the following effects can be obtained because it is configured as described above.

1) A lower ladder support formed so that the guide surface can be continuously extended downward is attached to a lower portion of the ladder support constituting the ladder guide surface, so that the ladder supports a predetermined number of ladders. The ladder support can be extended to support a multi-stage ladder without impairing the guide smoothness of the ladder.

2) Since it is not necessary to manufacture a ladder receiver, which is a component requiring a large number of processing steps, as a dedicated product for each number of ladder stages, the manufacturing cost of the entire evacuation device can be reduced.

3) Lower the ladder receiver up and down with respect to the ladder receiver
By installing it in a position-adjustable manner,
Adjust the position of the lower ladder support
Ladders of various levels can be installed.
The height of the entire ladder support part consisting of the ladder support and the lower ladder support
The dimension can be made as small as possible for each ladder step.
Can reduce the height of the storage frame.
You.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an evacuation device having a ladder support structure of the present invention.

FIG. 2 is an enlarged perspective view of a ladder support structure.

FIG. 3 is a sectional view showing a use state of the evacuation device.

FIG. 4 is a perspective view showing a stored state of the ladder.

FIG. 5 is an exploded perspective view showing a fixed state of the lower ladder receiver to the ladder receiver in the present invention.

FIG. 6 is a side view of a relevant part showing a mounting mode of a lower ladder support in an evacuation device including a ladder having nine steps.

FIG. 7 is a front view of a main part in the case of FIG. 6;

FIG. 8 is a main part side view showing a mounting mode of a lower ladder support in an evacuation device including a ladder having 12 steps.

FIG. 9 is a front view of a main part in the case of FIG. 8;

[Explanation of symbols]

 2 Storage frame 6 Ladder 6a Vertical beam 9 Ladder receiver 9b Attachment part 9e Attachment hole 9i Wing piece 9m Front side 10 Lower ladder receiver 10a Attachment part 10b Attachment part 10c Wing piece 10m Front side 24 Attachment hole 27 Fixing bolt 28 Fixing nut 30 Guide surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-7466 (JP, A) JP-A-5-68715 (JP, A) JP-A-54-37997 (JP, U) (58) Survey Field (Int. Cl. ⁷ , DB name) A62B 5/00 E06C 9/06

Claims (2)

(57) [Claims] 1. A storage frame attached to a hole formed in a slab such as a floor or a veranda, an upper and lower lid pivotally connected to a floor side and a ceiling side of the storage frame, respectively, An evacuation device that is folded and stored in a frame and has a pantograph-type ladder that extends to or near the floor below when the upper and lower lids are opened. The uppermost vertical rail of the ladder is rotatably supported and is rotatably supported, and the guide surface can be continuously extended downward to a lower portion of a ladder support constituting a guide surface when the ladder extends. A ladder support structure for an evacuation device, comprising a lower ladder support formed on the ladder. 2. The lower ladder receiver is vertically moved with respect to the ladder receiver.
, Which is mounted so that its position can be adjusted step by step.
A ladder support structure for the evacuation device according to claim 1.