JP3091889B2 - Ladder mounting 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 mounting structure for an evacuation device, and more particularly, to a storage frame mounted in a hole formed in a slab such as a floor or a veranda, and a storage frame in the storage frame. The present invention relates to a ladder mounting structure in an evacuation device including a pantograph-type ladder that is folded and stored, and a descending / falling machine that manages lowering and raising and lowering the ladder.

[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 connected to the floor side and the ceiling side of the storage frame, respectively, and folded and stored in the storage frame. A pantograph-type ladder that extends in an inclined manner to or near the floor below the floor when the upper and lower lids are opened and a descent of the ladder when evacuation starts, controls the elongation and descent of the ladder, and And a lifting machine for pulling and storing the lifter.

[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 top of the ladder is rotatably supported by a fixture fixed within the storage frame. When the ladder thus configured descends in the extended state, it is preferable that the rotation be restricted and the lower end be extended in an inclined state away from the wall surface in terms of safe evacuation. In addition, as a means for pulling up the extended ladder, a structure such as a rope such as a wire rope or a chain wound so as to be able to be wound on a lifting machine is connected to the horizontal rod connected between the elastic members at the lower end of the ladder. Are used.

[0004]

However, in this type of conventional evacuation device, since the rope is connected to a straight horizontal bar connecting the right and left telescopic members, the horizontal bar is not used when the ladder is stored. Since the position in the direction is shifted from the drooping position of the elevator,
The ladder was stored in the storage frame with the rope not completely wound. Therefore, not only is the storage state of the ladder unstable, but also there is a risk that other components of the evacuation device may be caught on the rope, which hinders lowering and raising the ladder. As a solution to this problem,
Although it is conceivable to change the mounting position of the elevator, it is difficult to change the mounting position of the elevator within the space in the narrow storage frame.

[0005] Further, since the rope moves on the horizontal rod, the extended state and the retracted state of the ladder become unstable, and the ladder swings right and left when the ladder descends and raises, giving a feeling of anxiety to evacuees. there were.

[0006] Furthermore, in addition to assembling the ladder, an operation of attaching the horizontal rod to the ladder is required, so that there is a problem that a large number of man-hours are required for the attachment and many components are required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a ladder mounting structure for an evacuation device capable of stabilizing the descent and storing of a ladder, and reducing the number of components and the number of assembly steps. It is intended for.

[0008]

In order to achieve the above object, a ladder mounting structure for an evacuation device according to the present invention comprises a storage frame mounted on a hole formed in a slab such as a floor or a veranda, and a storage frame mounted on the slab. A pantograph-type ladder that is folded and stored in the frame and that extends in an inclined manner to the floor below or near the floor, and starts evacuation of the ladder during evacuation, controls the elongation and descent of the ladder, and An elevating device for raising and lowering the ladder, the uppermost vertical rail of the ladder is rotatably pivoted in the storage frame, and is connected between the lower vertical rails of the ladder. An overhang portion is provided at the center of the horizontal rod, and the overhang portion is rotatably connected to an end portion of a rope that can be pulled out and taken up by the lifting machine. Is what you do.

In the present invention, the connecting form may be arbitrary, as long as the cable is rotatably connected to the overhang provided at the center of the horizontal rod, but preferably the overhang is preferable. It is preferable to attach a horizontal movement preventing body of the rope on both sides of the rope in the part.

[0010] The position of mounting the horizontal rod to the ladder may be arbitrary, but the connecting end of the horizontal rod is non-rotatably connected to one of the inner vertical rail and the outer vertical rail. It is preferable to connect rotatably with respect to the point that the number of constituent members can be reduced.

[0011]

According to the ladder mounting structure of the evacuation device of the present invention constructed as described above, the lowering side of the ladder is provided with a projecting portion provided at the center of the horizontal rod connected between the vertical bars. By rotatably connecting the ends of the ropes that can be pulled out and wound up to the machine, in the storage state of the ladder, the overhang portion can be located at the position immediately below the lifting machine,
The ladder can be folded in a state where the cable is completely wound, and the storage state of the ladder can be stabilized.

[0012] Further, by attaching a rope movement preventing body to both sides of the rope in the overhang portion, horizontal movement of the rope can be prevented when the ladder is lowered and pulled up, and the descent and storage state of the ladder is stabilized. be able to.

Further, by connecting the connecting end of the horizontal rod to one of the inner vertical rail and the outer vertical rail so as to be non-rotatable and rotatably connected to the other, the horizontal rod is connected to the ladder. And the connection of the vertical rails of the ladder can be performed at the same time, so that the number of constituent members can be reduced and the number of assembling steps can be reduced.

[0014]

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 a use state of an evacuation device having a ladder mounting structure of the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is a sectional view of a stored state of a ladder, and FIG. Is shown in perspective view.

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 pivotal connections to the floor surface and the ceiling surface 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 stepping horizontal rails 6b, 6b,... Are suspended at appropriate intervals between a pair of telescopic members 6c, 6c in which a plurality of vertical rails 6a, 6a. When the upper and lower lids are folded and stored in the storage frame 2 and the upper and lower lids are opened, the ladder 6 extending obliquely to or near the lower floor and the upper and lower lids 3 and 4 are opened. After the ladder 6 is lowered, the descent of the ladder 6 is started, Slow deplaning 7 for pulling up housing the 6
And the main part is constituted.

In this case, the storage frame 2 has four side wall members 2c each having an outwardly directed upper flange 2a at the upper end and a bent lower L-shaped lower flange 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. An anchor member 8 embedded in the slab 1 is fixed to the side wall member 2c on the ladder mounting side.

A pair of right and left attachments 9 (hereinafter referred to as brackets) are fixed to the inner side surface of the side wall member 2c of the storage frame 2 configured as described above, and the ladder 6 is attached to these brackets 9.
The upper end of the uppermost vertical bar 6a is rotatably pivoted.

In this case, as shown in FIG. 5, a fixing bolt 9f is attached to the inner surface of the side wall member 2c of the storage frame 2 as shown in FIG.
The fixed portion 9a is fixed by the fixing member 9a, and the mounting portion 9b of the ladder 6 is bent at a right angle from one end of the fixed portion 9a. A vertical bar 6a at the top of the ladder 6 is pivotally attached to the mounting portion 9b with a pivot shaft 10, and a sloped lower portion of the pivotal portion for supporting the vertical bar 6a at the top of the ladder 6 in contact therewith. The support piece 9c is cut and raised, and a mounting piece 9d for pivotally mounting a guide member 11 for maintaining the inclined state of the extended ladder 6 is provided on the lower end side. At the tip of the mounting portion 9b, a wing piece 9e faces inward.
Is bent so that the guide member 11 can come into contact with the wing piece 9e.

A cover member 12 is provided on the projecting side of the pivot shaft 10 to cover the contact support between the vertical bar 6a and the inclined support piece 9c.
The cover member 12 prevents the hand from being erroneously pinched between the vertical bar 6a and the inclined support piece 9c.

The brackets 9, 9 constructed as described above
A mounting plate 7a is connected between the mounting plates, and the lifting machine 7 is fixed to the mounting plate 7a. The lifting machine 7 is mounted and fixed on a metal fitting 13 projecting between the brackets 9 of the side wall member 2c.

On the other hand, a control mechanism for controlling the descent of the ladder 6 and a winding drum (not shown) for winding the wire 14 which is a rope for pulling up the ladder 6 are built in the lifting machine 7. The end of the wire 14 wound so as to be drawn and wound on the winding drum is connected to the vertical rails 6a, 6a on the lower end side of the ladder 6.
It is rotatably connected to a horizontal rod 15 connected therebetween.

In this case, as shown in FIG. 6, the horizontal rod 15 is formed in a substantially hat shape having a projecting portion 16 at the center thereof, and a hook plate 17 rotatably fitted to the projecting portion 16 so as to be rotatable. Washer 1 is attached to the burring portion 17a provided in
The loop portion 14a at the end of the wire 14 is fixed with a fixing bolt 18 and a nut 19 via 8a. Therefore, the wire 14 depends on the height of the burring portion 17a.
Can be freely rotated around the outer periphery of the burring portion 17a without being tightened. The hook plate 17 has a horizontal rod 15
There is provided a grooved hole 17b through which the projection 15a protruding from the shaft 15 passes, and is loosely fitted so as to be rotatable around the axis of the horizontal rod 15. Further, on both sides of the hook plate 17 in the overhang portion 16, cylindrical movement preventing members 20, 20 formed of, for example, tubes made of vinyl chloride or the like are mounted to prevent the wire 14 from moving in the horizontal direction. Note that, in this case, the movement preventing body 20 is provided with a slit 20a having a V-cut on one side to facilitate attachment to the horizontal rod 15.

The connecting end of the horizontal rod 15 has an outer vertical rail 6
O-shaped shaft portion 22 fitted in an oval-shaped hole 23 provided in
a is provided, and a screw shaft 22b is provided at the tip of the oval shaft portion 22a. The horizontal rod 1 thus formed
The oval-shaped shaft portion 22a of the oval 5 has an oval-shaped hole 23 of the outer vertical rail 6a.
The nut 25 is screwed to the screw shaft 22b via the washer 24 to be fixed integrally with the outer vertical rail 6a. The inner vertical rail 6a has a slide collar 26.
The horizontal rod 15 is fitted via the washer 27. That is, the inner vertical rail 6a, the slide collar 26, and the washer 27 are sandwiched between the outer vertical rail 6a and the protrusion 15a, and the axial displacement is regulated. Therefore, since the inner vertical rail 6a can rotate around the axis of the horizontal rod 15, the expandable body 6c can be folded. With this configuration, when the ladder 6 is in the extended state and in the lowered or raised state, the overhang portion 16 is located below the ladder 6 along the inclination angle (see FIGS. 1 and 7).
When the is stored, it is fixed so as to be oriented at 90 ° from the above lower side position, that is, the overhang portion 16 is located immediately below the lifting machine 7 (see FIG. 4).

In the above description, the case where the horizontal bar 15 is rotatably connected to the inner vertical bar 6a and the outer vertical bar 6a is non-rotatably connected has been described. Conversely, the outer vertical bar 6a may be rotatably connected to the horizontal bar 15 and the inner vertical bar 6a may be non-rotatably connected to the horizontal bar.

On the other hand, a hand-holding portion 3a protrudes from a central portion on the rear surface side of the upper lid 3, and a ladder 6 is provided on a free end side of the lower lid 4.
A plastic cushioning member 4a for preventing damage due to contact with the ladder 6 at the time of descent and pull-up is attached.

In the evacuation device having the ladder mounting structure of the present invention configured as described above, when lowering the ladder 6 by releasing the stopper mechanism (not shown) of the ladder 6, the ladder 6 is The ladder 6 extends down to the floor below or near the floor under the control of the control mechanism 7. At this time, the uppermost vertical rail 6a of the ladder 6 comes into contact with the inclined support piece 9c of the bracket 9, and the lower end of the ladder 6 is supported so as to be inclined away from the frame wall. Is located at a lower position along the inclination angle of the ladder 6, so that the wire 14 is in a state parallel to the extending direction of the ladder 6.

In order to store the ladder 6, if the winding drum is rotated in the winding direction by a winding handle (not shown) of the winding drum, the wire 14 is wound and the extended state of the ladder 6 is gradually contracted. Then, the adjacent vertical rails 6a, 6a are stored in contact with each other. At this time, the overhang portion 16 of the horizontal rod 15 is located immediately below the lifting machine 7, and the wire 14 is completely wound (see FIG. 4). Therefore, the storage of the ladder 6 becomes reliable, and the storage state of the ladder 6 is stabilized.

In the above embodiment, the inclined state of the ladder 6 at the time of extension is maintained by the inclined support pieces 9c provided on the bracket 9. However, such a structure is not necessarily required. The contact member protruding from the vertical bar 6a may be configured to contact the side wall member 2c of the storage frame 2 or the like.

[0030]

As described above, according to the ladder mounting structure of the evacuation device of the present invention, the following effects can be obtained since the ladder mounting structure is constructed as described above.

1) According to the ladder mounting structure of the first aspect, the overhanging portion provided at the center of the horizontal rod connected between the vertical rails at the lower end side of the ladder is pulled out and taken up by the lifting machine. Since the end of the rope that can be wound is rotatably connected, the overhang can be positioned directly below the lifting machine when the ladder is stored, and the rope is completely wound. The ladder can be folded in the folded state, and the storage state of the ladder can be stabilized.

2) According to the ladder mounting structure of the second aspect, since the horizontal movement preventing members of the rope are mounted on both sides of the rope at the overhang portion, the horizontal movement of the rope when the ladder is lowered and raised. Movement can be prevented, and descent and storage of the ladder can be stabilized.

3) According to the ladder mounting structure of the third aspect, the connecting end of the horizontal rod is non-rotatably connected to one of the inner vertical rail and the outer vertical rail, and the other is rotatably connected. Therefore, the number of constituent members can be reduced, and the number of assembly steps can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a sectional view showing a stored state of a ladder according to the present invention.

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

FIG. 5 is a perspective view showing a state where the ladder is attached to the storage frame.

FIG. 6 is an exploded perspective view showing a mounting state of the horizontal rod and the cable in the present invention.

FIG. 7 is a perspective view showing a lowered and raised state of the ladder.

[Explanation of symbols]

 2 Storage Frame 6 Ladder 6a Vertical Bar 7 Ladder 9 Bracket (Mounting Tool) 9b Mounting Portion 9c Inclined Supporting Piece 10 Pivot Shaft 14 Wire (Rope) 15 Horizontal Bar 16 Overhanging Portion 20 Movement Prevention Body 21 Rectangular Hole 22a Rectangular shaft 22b Screw shaft 23 Mounting hole 25 Nut

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A62B 5/00 E06C 7/14 E06C 9/14

Claims (3)

(57) [Claims] 1. A storage frame attached to a hole formed in a slab such as a floor or a veranda, a storage frame which is folded and stored in the storage frame, and extends in an inclined manner to or below a floor below the floor. An evacuation system comprising: a pantograph-type ladder to perform evacuation, and a descent machine for starting descent of the ladder at the time of evacuation, controlling elongation and descent of the ladder, and raising and storing the ladder. Is rotatably pivoted in the storage frame, and an overhang portion is provided at the center of a horizontal rod connected between the vertical rails at the lower end of the ladder, and the overhang portion and the unwinding machine are pulled out and wound. A ladder mounting structure for an evacuation device, wherein the ladder mounting structure is rotatably connected to an end of a rope that is rotatably wound. 2. On both sides of the cable at the overhang of the horizontal rod,
The ladder mounting structure for an evacuation device according to claim 1, further comprising a horizontal movement preventing body attached to the rope. 3. A connecting end of the horizontal rod is connected to one of the inner vertical rail and the outer vertical rail so as not to rotate, and rotatably connected to the other. A ladder mounting structure for the evacuation device according to the above.