JP3091887B2 - Ladder guide 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 guide 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 in the storage frame. And a pantograph-type ladder that is rotatably mounted on the ladder and 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 surface side of the storage frame, and a rotatable pivot inside the storage frame. It is known to have a pantograph-type ladder that is worn and folded and stored in a storage frame and extends to or near the floor below when the upper and lower lids are opened.

[0003] In the evacuation device configured as described above, the ladder has a structure in which a pair of right and left telescopic members having a number of vertical rails pivotally connected in a pantograph manner are connected by horizontal rails. The upper part is rotatably connected to a fixture fixed in the storage frame. When the ladder configured as described above is extended and descends, its rotation is regulated and the lower end side is inclined away from the wall surface, and it is possible to safely evacuate so that it does not shake as much as possible. It is preferred in that respect. Therefore, conventionally, in order to prevent the extended ladder from swinging, a swing-preventing plate is pivotally attached to the fixture, and the uppermost horizontal rail is brought into contact with the swing-preventing plate to move the ladder in the horizontal direction. (Actual opening 59-163
No. 100).

[0004]

However, in this type of conventional ladder rocking structure, the rocking prevention plate is simply rotatably pivoted to the fixture and abuts on the vertically opened lower lid. Due to the structure, when the lower lid is tilted and swung, the anti-swing plate also swings, and the operation is transmitted to the ladder, which eventually leads to a problem that the ladder is not sufficiently prevented from swinging. there were.

In addition, there is a risk that the ladder may be caught on the lower end of the swing preventing plate when the ladder is wound up, which not only hinders the winding of the ladder but also damages the ladder, the swing preventing plate, etc. There was also a problem that the life was shortened.

The present invention has been made in view of the above circumstances, and makes it possible to reliably prevent the ladder from swinging in the horizontal direction when the ladder is extended, to smoothly roll up the ladder, and to extend the life of the evacuation device. It is an object of the present invention to provide a ladder guide support structure for an evacuation device as described above.

[0007]

In order to achieve the above object, a ladder guide 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. When the upper and lower lids are pivotally attached to the floor side and the ceiling side of the storage frame, respectively, and when folded and stored in the storage frame and the upper and lower lids are opened,
An evacuation device comprising a pantograph-type ladder extending to or near the floor below the floor, and pivotally connecting a top rail of the ladder to a fixture protruding into the storage frame. A pivot member is pivotally attached to the fixture so as to be rotatable in a vertical direction, and the pivot member has a contact surface with the fixture at an upper end thereof, and an elongated strip ladder extending downward. A sliding surface for guiding the upper end of the ladder is formed on the surface corresponding to the above.

In the present invention, the anti-swing member has a contact surface at least at an upper end portion with a fixture, and guides the upper end of the ladder to a surface corresponding to the ladder of the elongated strip extending downward. Any one may be used as long as it forms a moving surface, but it is preferable to adopt a structure that is pivotally attached to the symmetrical position of the fixture and is connected by a connecting member. Further, the shape of the rocking member may be any shape, but it is preferable to form a contact portion with the lower lid at the lower end of the elongated piece of the rocking member, and to form a guide inclined surface from the lower end to the sliding surface. Is good.

[0009]

According to the ladder guide support structure of the evacuation device of the present invention having the above-described structure, the upper end of the swing-stopping member which is pivotally attached to the mounting tool protruding into the storage frame is provided with the mounting tool. By forming a contact surface with the ladder and forming a ladder sliding surface on the corresponding surface with the elongated ladder extending downward, force is applied to the ladder when the ladder is extended, and the ladder is brought into contact with the sliding surface. When it abuts, the contact surface of the upper end portion abuts on the fixture by the reaction force, so that the ladder is prevented from swinging in the horizontal direction, and the force applied to the ladder can be supported by the fixture.

Further, by forming a contact portion with the lower lid at the lower end of the elongated piece of the rocking member and forming a guide inclined surface from the lower end to the sliding surface, the ladder can be lowered and wound up. Since the upper end of the ladder moves along the sliding surface and the guide inclined surface, the ladder can smoothly descend and hoist, and does not damage the ladder, the rocking member, and the like.
Furthermore, even when the lower lid is swung while the ladder is being lowered, hoisted or extended, the lower lid abuts on the contact portion and does not interfere with the ladder.

[0011]

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 guide support structure of the present invention in use, FIG. 2 is a side sectional view of an evacuation device in use, and FIG. 3 is a perspective view of a ladder guide support structure of the present invention. FIG. 4 is a cross-sectional view of the ladder guide support structure.

The evacuation device includes a storage frame 2 attached to a hole 1a drilled 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. A plurality of horizontal rails 6b, 6b,... Are horizontally suspended and accommodated between a pair of elastic bodies 6c, 6c in which a plurality of vertical rails 6a, 6a. Frame 2
When the upper and lower lids are folded and stored and the upper and lower lids are opened, the ladder 6 extending to or near the lower floor, and the upper and lower lids 3, 4 are opened, and then the ladder 6 descends. And a slower 7 for controlling the elongating and lowering speed of the ladder 6 and pulling up and storing the ladder 6 constitute a main part.

In this case, the storage frame 2 has four side wall members 2c having an outwardly directed upper flange 2a at an 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 L-shaped anchor member 2e 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 (see FIGS. 1 and 2).

On the inner surface of the side wall member 2c of the storage frame 2, a pair of angled brackets 81, 81 and a horizontal plate 82 connected between the brackets 81 and fixedly mounting the lifting machine 7 are provided.
Is fixed, and the upper end of the uppermost vertical bar 6a of the ladder 6 is rotatably mounted on the bracket 81 of the mounting tool 8 by a pivot bolt 8j and a nut 8k. The anti-swing member 9 is pivotally attached to the lower end of the bracket 81 so as to be rotatable in the vertical direction.

As shown in FIGS. 4 and 5, the anti-swing member 9 is pivotally attached to the lower flange portion 8g of the bracket 81 with a pivot screw 9a and a pivot nut 9b. 81i bent at the tip of 81
A contact surface 9c is formed at the upper end of the ladder 6 on the surface corresponding to the ladder 6 of the elongated piece 9d extending below the pivot portion. A sliding surface 9e for guiding 6d is formed. Further, the lower end of the elongated piece 9d is bifurcated, one of the bifurcations forms a contact portion 9f that abuts on the inner surface of the lower lid 4, and the other has a ladder 6 extending from the lower end to the sliding surface 9e. 9g is formed. In this case, the contact portion 9f is formed by
The connecting rod 9h is connected to the rocking stoppers 9 and 9 and the collar 9i is loosely fitted to the connecting rod 9h. 4 can be brought into contact with the inner surface. In this case,
The connecting rod 9h can be in contact with the inner surface of the lower lid 4 without providing the collar 9i, and the forked portion can be in contact with the inner surface of the lower lid 4.

The bracket 81 is shown in FIGS.
As shown in the figure, an angled shape including a fixing portion 8a fixed to the inner surface of the side wall member 2c of the storage frame 2 and a mounting portion 8b of the ladder 6 bent at right angles from one side end of the fixing portion 8a. It is formed of a member. The fixture 8 having the pair of brackets 81, 81 formed as described above is provided with a fixing portion 8a.
Is fixed to the inside of the storage frame 2 in a state where the mounting portion 8b is opposed to the outside. A vertically long slot 8c through which the fixing bolt 10 penetrates is formed in the upper part of the fixing part 8a, and a cutout groove 8d through which the fixing bolt 10 penetrates is formed in the lower end. On the other hand, a mounting hole 8e for pivotally supporting the end of the uppermost vertical bar 6a of the ladder 6 is formed in the mounting portion 8b, and the uppermost vertical bar 6a is provided below the mounting hole 8e. A supporting hole 8h for pivoting the anti-swing member 9 is formed in a lower flange 8g which is cut and raised by a slanted support piece 8f which abuts on the lower end. A wing piece 8i is bent inward at the tip of the mounting portion 8b, and this wing piece 8i is bent.
The abutment surface 9c of the anti-swing member 9 can come into contact therewith.

Storage frame 2 installed in hole 1a of slab 1
In order to attach the ladder 6 to the
The ladder 6 may be assembled in advance, and the fixture 8 may be fixed to the side wall member 2c of the storage frame 2 with the fixing bolt 10 and the fixing nut 11 inside the storage frame 2 at the site.

At the center of the lower cover 4, a rectangular protrusion 4a is provided which protrudes from the inner side surface of the lower cover 4.
The rectangular ridge 4a increases the rigidity of the lower cover 4 and positively engages the collar 9i of the contact portion 9f of the anti-swing member 9.
The lower lid 4 can come into contact therewith.

Note that the vertical bar 6 is provided on the projecting side of the pivot bolt 8j.
When the cover member 12 that covers the abutting support portion between the a and the inclined support piece 8f is attached in a state where it is loosely fitted, the cover member 12 erroneously causes a hand between the vertical rail 6a and the inclined support piece 8f. Can be prevented from being caught. A handle 13 is fixedly provided on the inner side surface of the upper lid 3, and a lower lid cushion made of plastic is provided on a lower edge of the lower lid 4 to prevent damage due to abrasion when the ladder 6 is moved up and down. Member 14 is attached. Further, a hoisting wire 16 is connected between the lifting machine 7 and a horizontal rod 15 laid between the lower vertical bars 6a.

In the evacuation device having the rocking member 9 configured as described above, when the upper and lower lids 3 and 4 are opened to lower the stowed ladder 6, the ladder 6
The descending is performed while the descending speed is controlled by the ratchet mechanism described above. At this time, since the joining material 6d bridged between the vertical bars 6a at the upper end is guided along the sliding surface 9e of the rocking stopper 9, The ladder 6 descends smoothly and extends. Further, when a force is applied to the ladder 6 in the extended state, the joining material 6d of the ladder 6 abuts on the sliding surface 9e of the anti-swing member 9 by the force,
Due to the reaction force, the contact surface 9c at the upper end of the rocking stopper 9 comes into contact with the wing piece 8i of the attachment 8 (see FIGS. 4 and 6). Accordingly, the ladder 6 can be prevented from swaying in the horizontal direction, and can be safely evacuated. Further, even if the lower lid 4 is swung by wind pressure or the like, the rectangular ridge 4a of the lower lid 4 abuts on the lower end abutting portion 9f of the swing-stopping member 9, so that the ladder 6
There is no danger of affecting evacuation, and evacuation can be performed safely. This is the same when the ladder 6 is lowered or hoisted, and the horizontal sway of the ladder 6 during descent or hoisting is prevented.

On the other hand, when hoisting the ladder 6, the hoisting wire 16 of the elevating machine 7 is wound up and the ladder 6 is contracted. At this time, as shown in FIG. Since a horizontal rod (not shown) suspended between the vertical bars 6a on the lower side of the bar 6b moves along the sliding surface 9e while being sequentially guided by the guide inclined surface 9g, the winding of the ladder 6 can be smoothly performed. It can be carried out.

In the above embodiment, the lower end portion of the anti-swing member 9 is formed in a forked shape, and the contact portion 9f and the guide inclined surface 9g are separated from each other. Instead, the contact portion 9f and the guide inclined surface 9g may be provided at one place.

Further, in the above embodiment, the vertical rail 6a at the upper end is used.
The joint member 6d suspended between the sliding members 9d is the sliding surface 9e of the anti-swing member 9.
Has been described along the side, but
Is formed by a round bar, the horizontal rail can be guided along the sliding surface 9e of the rocking member 9.

[0025]

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

1) According to the ladder guide support structure of the first aspect, since the reaction force of the force applied to the ladder when the ladder is extended can be transmitted to the storage frame side via the fixture, the ladder can be moved in the horizontal direction of the ladder. Of the ladder, the ladder can be reliably supported, and safety can be improved.

2) According to the ladder guide support structure of the second aspect, the upper end of the ladder can be smoothly guided and moved when the ladder is lowered and hoisted, which hinders the ladder from lowering and hoisting. And does not damage the ladder or other components.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view showing a use state of the evacuation device.

FIG. 3 is a perspective view showing a ladder guide support structure of the present invention.

FIG. 4 is a side sectional view showing a ladder guide support structure.

FIG. 5 is an exploded perspective view showing an attached state of the swing preventing member according to the present invention.

FIG. 6 is a perspective view showing a state in which the swing-stopping member abuts on a fixture.

FIG. 7 is a side sectional view showing a winding state of the ladder.

[Explanation of symbols]

 2 Storage frame 6 Ladder 6d Joint material 8 Attachment 8i Wing piece 9 Suppression member 9a Pivot screw 9b Pivot nut 9c Contact surface 9d Slender piece 9f Contact portion 9g Guide inclined surface

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A62B 5/00 E06C 7/06 E06C 9/14

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, A pantograph-type ladder that is folded and stored in the frame and extends to or near the floor below when the upper and lower lids are opened, and is protruded into the storage frame. In the evacuation device, the uppermost vertical rail of the ladder is pivotally attached to the fixture, a pivoting member is pivotally pivotably attached to the fixture so as to be vertically rotatable, and the pivoting member is attached to the upper end thereof. The evacuation device is characterized in that it forms a contact surface with the mounting tool and forms a sliding surface for guiding the upper end of the ladder on a surface corresponding to the elongated ladder extending downward. Ladder guide support structure. 2. The device according to claim 1, wherein a contact portion with the lower lid is formed at a lower end portion of the elongated piece of the rocking member, and a guide inclined surface is formed from the lower end to the sliding surface. Ladder guide support structure for evacuation equipment.