JP2018071205A - Escape ladder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an escape ladder device capable of easily correcting the position of a handle on site if the handle associated with a release mechanism does not correspond positionally to an escape passage such as a building window.SOLUTION: An escape ladder device includes a fixing piece 11 to be fixed to a building, a movable piece 12 arranged in parallel with the fixing piece, a plurality of ladder steps 13 spanned between the fixing piece 11 and the movable piece 12 in a pivotal manner, a lock mechanism 6 and 7 for maintaining an accommodated state under which the ladder steps 13 are folded for accommodation, an unlock mechanism 26 and 28 for releasing a locked state of the locking mechanism 6 and 7, a rotational shaft 22 causing the unlock mechanism 26 and 28 to operate and detachably attached to the releasing mechanism, and a handle H that causes the rotational shaft 22 to rotate, and further includes a plurality of shaft holes 11g into which the rotational shaft 22 is inserted are pre-formed in a lengthwise direction of the fixing piece 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an evacuation ladder apparatus that is fixed to an outer wall of a building, maintains a stored state in a normal state, and is deployed and used in an emergency.

As an evacuation ladder device used for evacuating from a window to the outside of a building in an emergency such as a fire, there are those shown in FIGS.
As shown in FIG. 7, this evacuation ladder apparatus is provided with a ladder part A on which the refugee steps and a protective fence part B that protects the refugee from falling off the ladder part A. It is.
The ladder part A includes a fixed column 1 having a substantially L-shaped cross section for fixing the side surface 1a to the outer wall of the building, a movable column 2 facing the fixed column 1 and having a substantially L-shaped cross section, and these It consists of a plurality of ladder bars 3 that are rotatably spanned between the fixed column 1 and the movable column 2.

The protective fence B is composed of the movable column 2, the fence column 5, and a plurality of cross members 4 that are rotatably spanned between the movable column 2 and the fence column 5. ing.
Then, while the fence post 5 is moved closer to the movable column 2, the cross member 4 is rotated in the direction of arrow y to bring the protective fence B into the retracted state, and then the movable column 2 is moved closer to the fixed column 1. By rotating the ladder bar 3 in the direction of the arrow y, the ladder bar 3 is stored between the fixed column 1 and the movable column 2 and the evacuation ladder device is stored.

A locking mechanism is provided between the solid column 1 and the movable column 2 to maintain the proximity of the fixed column 1 and the movable column 2 and to maintain the storage state of the ladder device.
This locking mechanism is composed of, for example, a hook member 6 and a latch member 7 as shown in FIG.
The hook member 6 includes a slope 6a formed on the distal end side and a recess 6b that opens downward, and the base end thereof is fixed to the fixed column 1 side. However, the hook member 6 is fixed to a slide member (not shown) that is slidably held with respect to the fixed column 1.

On the other hand, the latch member 7 is a member fixed to the movable column 2 side at a position facing the hook member 6 fixed to the fixed column 1 side.
This latching member 7 is a member having a U-shaped cross section, and elongated holes 7a, 7a extending in the vertical direction are formed at positions facing each other on opposing surfaces, and a rod member 8 is formed in the elongated holes 7a, 7a. It is handed over. The rod member 8 has a dimension that allows the rod member 8 to move smoothly in the elongated hole 7 a, and is pulled upward by a coil spring 9.

  When the ladder device is moved from the deployed state to the retracted state, the slope 6a on the distal end side resists the spring force of the coil spring 9 in the process in which the hook member 6 moves to the latch member 7 in the direction of arrow A. When the member 8 is pushed down and the tip of the hook member 6 gets over the rod member 8, the recess 6 b is caught on the rod-shaped member 8. Thereby, the contact | adherence state of the fixed pillar 1 and the movable pillar 2 is maintained. At this time, the bar member 8 is pressed against the recess 6b by a spring force directed upward of the coil spring 9, and does not come off. That is, the storage state of the ladder device is maintained.

  On the other hand, when releasing the lock mechanism, the hook member 6 is moved in the direction of arrow B by moving the slide member on the fixed column 1 side, and the recess 6 b is detached from the bar member 8 of the latch member 7. When the lock state of the lock mechanism is released in this way, the ladder bar 3 is rotated in the direction of the arrow x, and the ladder device can be brought into the unfolded state by separating the fixed column 1 and the movable column 2.

Although the description of the release mechanism for releasing the locked state by moving the slide member is omitted, the rotary shaft of the handle H in FIGS. 7 and 8 is connected to the release mechanism, and the handle H is operated by operating the handle H. The lock mechanism is released.
A plurality of the handles H are attached to the front surface 1 b of the fixed column 1. This handle H is operated by an evacuee in a building by hand from a window W, for example, in an emergency. When the handle H is turned in the direction of the arrow x, the locking mechanism is released, and the ladder bar 3 can be rotated in the direction of the arrow x to deploy the ladder device.

Therefore, the handle H must be attached at a position where the evacuee's hand can reach, for example, within the opening height L1 of the window W or the like so that the evacuee can operate indoors in an emergency.
However, the position of the window W varies depending on the building. Therefore, in the conventional evacuation ladder device, when the building on which the ladder device is installed is determined, the position where the refugee can easily operate is determined based on the position of the window or the veranda of the building, and the handle H is placed at that position. A shaft hole for inserting the rotation shaft was formed, and the rotation shaft was inserted therein to attach the handle H.

Japanese Utility Model Publication No. 51-115796 JP 2006-265908 A

As described above, conventionally, a ladder device is shipped from the factory by forming a shaft hole corresponding to the position of the window W of the building, and fixing the handle H at that position.
However, the position of the window W or the like at the site may not correspond to the position of the handle H. Thus, when the position of both does not correspond, the position of the handle H must be changed.
However, if the position of the handle H is to be changed, a shaft hole for inserting the rotation shaft must be newly formed in the fixed column 1.
However, there is not always a drilling tool at the installation site of the ladder device, and when the shaft hole is formed carelessly, the drilling tool may damage the lock mechanism or the release mechanism. .

Therefore, in order to replace the handle H, the ladder apparatus is brought back to the factory, a shaft hole is newly formed, and the position of the handle H is changed.
For this reason, there are problems that the construction period is extended, transportation costs for going back and forth between the factory and the site, labor costs at the factory, etc. are required.
An object of the present invention is to provide an evacuation ladder apparatus that can easily correct the position of a handle on site even if the position of the handle connected to the release mechanism and the evacuation path such as a building window does not correspond. That is.

According to a first aspect of the present invention, there is provided a fixed column fixed to a building, a movable column arranged along the fixed column, and a plurality of ladder bars that are rotatably spanned between the fixed column and the movable column. And moving the movable column between a storage state in which the ladder bar is folded and stored between the two and a use state in which the storage state is opened. A release mechanism for releasing the lock state of the lock mechanism in the evacuation ladder device provided in any one of the fixed column and the movable column or between them. The rotary mechanism is operated and the rotary shaft made detachable with respect to the release mechanism, the handle for rotating the rotary shaft, and the rotation of the handle are formed in advance along the axial direction of the fixed column. Insert axis And the rotation shaft is inserted into the shaft hole selected corresponding to the window position of the building, and the rotation shaft is linked to the release mechanism. It is characterized by that.
In addition, the space | interval which forms the said shaft hole is made shorter than opening heights, such as a window which an evacuee can escape, and it is made for the 1 or more shaft hole to be always located in the range corresponding to the opening of a window.

According to a second aspect of the present invention, the fixed column is provided with a long slide member that is slidable in the axial direction and is pressed or pulled either up or down, and the lock mechanism is configured by the slide member or the movable column. And a hook member fixed to either the slide member or the movable column and hooked to the hook member in the stored state.
The release mechanism includes a rack member attached to the slide member, and a pinion that rotates with the rotation shaft of the handle and engages with the rack member, and the slide member is rotated by the rotation of the rotation shaft. Is moved in the direction opposite to the pressing or pulling direction so that the hook member is detached from the latch member and the lock mechanism is released.
A convex portion is provided on one of the pair of facing surfaces of the slide member and the rack member, and a concave portion into which the convex portion is fitted is provided on the other, and the convex portion on the slide member side is provided. Or a recessed part is provided in the position corresponding to the shaft hole formed in the said fixed pillar, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, a support portion is provided at a position facing the shaft hole of the fixed column with a space therebetween, and a bearing member that supports the distal end side of the rotating shaft of the handle is fixed to the support portion. It is characterized by that.

  According to a fourth aspect of the present invention, a support shaft that rotatably supports one end of the ladder bar is detachably provided in the support portion, and the shaft hole is provided corresponding to the support shaft. It is characterized by that.

According to the first invention, the handle can be attached by specifying a necessary position according to the window position of the building from the mounting holes formed in advance at the installation site of the evacuation ladder apparatus. Therefore, it is not necessary to form the shaft hole even when the position of the handle attached to the ladder device does not correspond to the position of the actual window or the like.
Therefore, it is not necessary to take the ladder device back to the factory for the replacement of the handle, which can save a lot of time and cost.

According to the second invention, the rack member constituting the release mechanism can be easily attached in correspondence with the shaft hole that is the attachment position of the handle. Therefore, it is easy to change the position of the rack member in accordance with the position of the handle.
Further, since the rack member can be attached at a position corresponding to each shaft hole, the axial length of the rack member can be set to a required length corresponding to the portion that meshes with the pinion. That is, the rack member having a short axial length can be attached by the number of handles. For example, when one rack member corresponding to all the shaft holes is used, or when rack members for all the shaft holes are attached, the weight of the rack member increases, and the slide member is moved. However, in the present invention, such a problem does not occur, although a large force is required or the total weight of the ladder device is increased and the transportability is deteriorated.

According to the third invention, the rotating shaft of the handle can be stably supported at the two positions of the shaft hole side and the bearing member.
According to the fourth aspect of the invention, the bearing member that supports the tip end side of the rotating shaft of the handle can be fixed to the support member using the support shaft that supports the ladder rail. Therefore, a separate part for fixing the bearing member becomes unnecessary, and the number of parts can be reduced. In particular, when replacing the handle at the site, it is not necessary to prepare a new part for attaching the bearing member, and the workability at the site is improved.
Moreover, in this invention, the space | interval of the shaft hole formed previously is made to correspond with the space | interval of the ladder rail. The distance between the ladder bars that allow people to evacuate safely is smaller than the opening height of a window or the like through which the evacuees can escape. Therefore, one or a plurality of the shaft holes must be within the range corresponding to the opening height. Will be located. Thus, a suitable position can be selected and a handle attached thereto.

It is the perspective view which showed the expansion | deployment state of the ladder for evacuation of embodiment of this invention. It is sectional drawing of the accommodation state of the ladder apparatus for evacuation of embodiment. It is a perspective view around the release mechanism of the embodiment. It is a front view of the fixed pillar of embodiment. It is a perspective view of the bearing member of an embodiment. It is a side view of the rack member of an embodiment. It is the perspective view which showed the expansion | deployment state of the conventional evacuation ladder apparatus. It is the external view which showed the accommodation state of the conventional evacuation ladder apparatus. It is a perspective view of the lock mechanism of the conventional evacuation ladder apparatus.

An embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the evacuation ladder apparatus of this embodiment includes a ladder part A and a protective fence part B that are deployed in directions orthogonal to each other, and these ladder part A and protective fence part B are normally used. The ladder device can be folded into the stowed state.
The ladder part A is composed of a fixed column 11 that fixes the side surface 11a side to the outer wall of the building, and the movable column 12 between which a plurality of ladder bars 13 are pivoted between the fixed column 11. The protective fence B is composed of the movable column 12 and a fence column 15 in which a plurality of cross members 14 are bridged between the movable column 12.
FIG. 2 is a cross-sectional view of the evacuation ladder apparatus according to this embodiment in the housed state. At this time, the fixed column 11 and the movable column 12 are in close contact with each other. In FIG. 2, the front side of the page is the upper side, and the back side is the lower side.

As shown in FIGS. 1 and 2, each of the fixed column 11 and the movable column 12 is a long member having a substantially L-shaped cross section. The fixed column 11 includes a side surface 11 a that is the outer wall side of the building, and the side surface. A substantially L-shape is formed by a front surface 11b to which the handle H is attached and orthogonal to 11a.
In addition, the movable column 12 forms a substantially L shape with a side surface 12a facing the side surface 11a of the fixed column 11 and a back surface 12b facing the front surface 11b in the housed state.
The fixed column 11 has a connecting portion 11c formed on the outer side of the side surface 11a, and a fixing bracket 16 is connected to the connecting portion 11c, and the fixing ladder 16 fixes the evacuation ladder device to the outer wall of the building. (See FIG. 2).

  In addition, a guide recess 11d extending in the axial direction is formed on the inner side of the side surface 11a of the fixed column 11 and near the corner between the front surface 11b, and a long guide recess 11d is formed in the guide recess 11d. A plate-like slide member 17 is incorporated so as to be slidable in the vertical direction. A spring member (not shown) is connected to the lower end of the slide member 17 and pulled downward by the spring force and gravity, and the lower end position of the slide range of the slide member 17 is maintained in the storage state shown in FIG. Yes.

Further, a pair of bearing portions 11e and 11f continuous in the axial direction of the fixed column 11 is formed in a portion closer to the back surface 12b side of the movable column 12 than the guide recess 11d, and between the bearing portions 11e and 11f is formed. One end of the ladder bar 13 is inserted, and a support shaft 18 is rotatably supported to rotatably support the ladder bar 13. The support shaft 18 is fixed to the pair of bearing portions 11e and 11f by tightening a nut 18a at one end. By removing the nut 18a, the support shaft 18 can be removed from the bearing portions 11e and 11f.
Therefore, a bearing plate 23 (see FIGS. 2, 3, and 5), which will be described later, can be fixed to the bearing portion 11e by the support shaft 18.

On the other hand, the movable column 12 is formed with a pair of bearing portions 12c and 12c continuous in the axial direction of the movable column 12 at positions facing the bearing portions 11e and 11f, and between the bearing portions 12c and 12c, The other end side of the ladder bar 13 is inserted, and a support shaft 19 that supports the ladder bar 13 so as to be rotatable is passed over.
In the storage state of FIG. 2, the ladder bar 13 is folded so that the support shaft 19 on the movable column 12 side is positioned above the support shaft 18 on the fixed column 11 side. That is, in the storage state of the ladder part A, the movable column 12 is lifted with respect to the fixed column 11 and floated in the air.

Further, the movable column 12 is formed with a pair of bearing portions 12d and 12d extending in the axial direction in a direction perpendicular to the bearing portions 12c and 12c, and between the bearing portions 12d and 12d, the protective fence portion B is formed. One end side of the cross member 14 is inserted, and a support shaft 20 that supports the cross member 14 so as to be rotatable is stretched.
Further, the fence pillar 15 is a channel-like long member, and a pair of side surfaces 15a and 15a functions as a bearing portion at a position facing the bearing portions 12d and 12d, and between the side surfaces 15a and 15a, The other end side of the cross member 14 is inserted, and a support shaft 21 that supports the cross member 14 so as to be rotatable is passed over.
2, the cross member 14 is folded in a state where the support shaft 21 on the fence column 15 side is positioned above the support shaft 20 on the movable column 12 side. That is, the fence column 15 is lifted upward with respect to the movable column 12 and floated in the air.

On the other hand, a handle H is attached to the front surface 11 b of the fixed column 11, and the rotary shaft 22 fixed to the handle H is passed through a shaft hole 11 g formed in the front surface 11 b of the fixed column 11.
In this embodiment, as shown in FIG. 4, a plurality of shaft holes 11 g are formed in advance on the front surface 11 b of the fixed column 11 with a distance L <b> 2.
Further, the distance L2 is made equal to that of the ladder bar 13, and each shaft hole 11g is made to correspond to the position of the ladder bar 13.

A stop hole 11h for fixing the bearing member 24 to the outside of the front surface 11b is also formed in the vicinity of the shaft hole 11g (see FIG. 4).
As shown in FIG. 2, the bearing member 24 includes a cylindrical bearing portion 24a that rotatably supports the rotary shaft 22 of the handle H attached to the outside of the front surface 11b, and an attachment plate portion 24b. The mounting plate portion 24b is fixed to the front surface 11b with a screw or the like penetrating the stop hole 11h.

  1, 2, and 4, reference numeral 11 i denotes a pressing piece that protrudes in a hook shape from the front surface 11 b and extends in the axial direction. When the mounting plate portion 24 b is attached to the front surface 11 b, the pressing piece 11 i The one edge of the mounting plate portion 24b is sandwiched. The pressing piece 11i is not essential, but if the attachment plate portion 24b is pressed by the pressing piece 11i, the number of the stop holes 11h can be reduced.

This embodiment is characterized in that a plurality of shaft holes 11g are formed in the fixed column 11 in advance as described above. A handle H is attached by selecting a shaft hole 11g at a required position from the plurality of formed shaft holes 11g.
2 and 3 are views of the vicinity of the shaft hole 11g in a state where the handle H is attached to the specific shaft hole 11g and the vicinity of the release mechanism.
As shown in FIGS. 2 and 3, the rotating shaft 22 includes a spacer 25, a pinion 26, and an open lever 27 in order from the front surface 11 b side of the fixed column 11 toward the bearing portion 11 e on which the ladder bar 13 is supported. It penetrates. The pinion 26 and the open lever 27 are fixed to the rotating shaft 22 with a screw (not shown) so that they rotate integrally with the rotating shaft 22. As shown in FIG. 3, the open lever 27 has its tip pointed upward along the axis of the fixed column 11 together with the handle H in the stored state of the evacuation ladder device.

Further, the tip of the rotating shaft 22 is supported by a bearing plate 23 fixed to the bearing portion 11e (see FIGS. 2 and 3). As shown in FIG. 5, the bearing plate 23 is formed with a shaft hole 23a for rotatably supporting the tip of the rotating shaft 22, and a fixing hole 23b for fixing the bearing plate 23 to the bearing portion 11e. ing. The tip of the support shaft 18 is inserted into the fixing hole 23b, and the bearing plate 23 is fixed to the bearing portion 11e.
That is, in this embodiment, the bearing plate 23 is the bearing member of the present invention, and the bearing portion 11e is a support portion that is opposed to the shaft hole 11g at a distance.

As shown in FIGS. 2 and 3, the hook member 6 and the rack member 28 are fixed to the slide member 17.
The hook member 6 is the same as the conventional one shown in FIG. 9 and constitutes a lock mechanism together with the latch member 7.
In the state shown in FIG. 2, the bar member 8 of the latching member 7 is fitted into the recess 6 b of the hook member 6, and the close contact state between the fixed column 11 and the movable column 12 is maintained. Maintained.
3 is a spring member that presses the ladder bar 13 in the folding direction.

Further, the rack member 28 is a rod-shaped member shown in FIG. 6, and is formed with a rack portion 28a that engages with the pinion 26 and a pair of mounting projections 28b and 28c on the back surface side. A concave portion (not shown) into which the convex portions 28b and 28c are fitted is formed at a position where the rack member 28 is to be mounted on the slide member 17, and the rack member 28 is pressed into the concave portions by press-fitting the convex portions 28b and 28c. It is fixed. However, a concave portion may be formed on the rack member 28 side, and a convex portion that fits into the concave portion may be formed on the slide member 17 side.
The position where the rack member 28 is to be attached is a position where the rack portion 28a meshes with the pinion 26 fixed to the rotating shaft 22 of the handle H.

Next, a process of releasing the lock mechanism from the stored state will be described.
First, when the handle H is tilted and rotated in the direction of arrow x in FIG. 3, the rotary shaft 22 rotates together with the handle H, and the pinion 26 also rotates in the direction of arrow x. When the pinion 26 rotates, the rack member 28 meshing with the pinion 26 rises, and the slide member 17 to which the rack member 28 is fixed rises. Further, as the slide member 17 is raised, the hook member 6 is also raised.
When the hook member 6 is raised, the recess 6b is disengaged from the bar member 8 of the latch member 7, and the lock state of the lock mechanism is released.

On the other hand, the open lever 27 also rotates in the direction of the arrow x along with the rotation of the rotating shaft 22 and moves to the position indicated by the two-dot chain line in FIG.
The open lever 27 pushes the fence post 15 with its tip abutting against the fence post 15 in the above rotating process. Since the fence column 15 is connected to the movable column 12 via the cross member 14, the force pushing the fence column 15 acts as a force in a direction separating the movable column 12 from the upper fixed column 11.
At this time, since the locked state of the locking mechanism is released as described above, together with the fence post 15 pushed by the open lever 27, the movable column 12 is separated from the fixed column 11 and the ladder device is deployed.

In other words, the pinion 26 that rotates together with the rotary shaft 22 of the handle H and the rack member 28 that meshes with the pinion 26 constitute a release mechanism that releases the lock mechanism.
Such a release mechanism is provided for each handle H. A plurality of handles H attached to correspond to each floor are connected to one slide member 17 through a release mechanism in which the rotary shaft 22 is linked. Therefore, regardless of which handle H is operated, the lock state of the lock mechanism can be released as described above.

As described above, in the process in which the movable column 12 is separated from the fixed column 11, the fence column 15 that has been in contact with the front surface 11 b of the fixed column 11 goes out of the front surface 11 b of the fixed column 11. The pressing force for maintaining the position of the fence post 15 in the storage state of the part B is also eliminated.
Therefore, the protection fence part B can also be expanded.
In particular, when the cross member 14 of the protective fence B is maintained at an angle with respect to the vertical line in the stored state, there is no pressing force on the fence column 15 by the front surface 11b of the fixed column 11. At that time, the weight of the fence post 15 functions as a force for rotating the cross member 14, and the protective fence B can be automatically deployed.

  When the handle H is released after the handle H is operated and the handle H is released, the slide member 17 is caused by the weight of the slide member 17 and the spring force of the spring member that pulls downward. Returns to the lower end position of the sliding range. When the slide member 17 returns to the lower end position, the rack member 28 moves integrally with the slide member 17, and the rack member 28 rotates the pinion 26 to open the lever 27, the hook member 6, and the handle H. Is returned to the initial position shown in FIG.

  Further, when returning the deployed ladder device as shown in FIG. 1, the movable column 12 may be moved to the fixed column 11 side while folding the protective fence portion B and the ladder portion A as in the prior art. . In the process of bringing the movable column 12 closer to the fixed column 11, the tip of the hook member 6 shown in FIG. 9 exceeds the rod-shaped member 8, and the lock mechanism is again locked and the stored state is maintained.

In the ladder device of this embodiment, a plurality of shaft holes 11g are formed in advance on the front surface 11b of the fixed column 11 as described above.
Therefore, when an order is placed, the shaft hole 11g corresponding to the position of the window or veranda of the building where the ladder apparatus is installed is selected from the shaft hole 11g, and the handle H and the lock release mechanism are attached thereto. be able to.
Specifically, the bearing member 24 is fixed to the selected shaft hole 11g outside the front surface 11b, and the spacer 25, the pinion 26, and the open lever 27 are attached to the rotary shaft 22 that passes through the shaft hole 11g. To fix.

Further, the tip of the rotary shaft 22 is inserted into the shaft hole 23a of the bearing plate 23, the support shaft 18 that supports the ladder bar 13 is inserted into the fixed hole 23b, the nut 18a is tightened, and the bearing plate 23 is fixed to the bearing portion. 11e is fixed.
Thereby, the rotating shaft 22 is rotatably supported at two locations of the bearing member 24 and the bearing plate 23. The rotating shaft 22 can be supported only by the bearing member 24. However, by supporting the rotating shaft 22 in two places as in this embodiment, the rotating shaft 22 can be supported more stably, and the rotating shaft 22 does not rattle.
Before inserting the rotating shaft 22 into the shaft hole 11g, the rack member 28 needs to be fixed in the recess of the slide member 17 corresponding to the selected shaft hole 11g.

Thus, in this embodiment, the handle H and the release mechanism are attached using the plurality of preformed shaft holes 11g and the recesses of the slide member 17 formed at positions corresponding to the shaft holes 11g. ing. Therefore, it is possible to easily change the position of the handle H and the release mechanism.
For example, if the position of the handle H does not correspond to the position of the evacuation route such as a window after carrying the evacuation ladder apparatus with the handle H attached to the site, the handle H etc. is removed on the spot. The handle H and the rack member 28 can be reattached by selecting another shaft hole 11g. In this way, when re-installing the handle H or the like, there is no need for drilling, so there is no need to bring the ladder device back to the factory to change the position of the handle H as in the past, and the construction period is delayed or cost It will not be applied.

Furthermore, in the above embodiment, the bearing plate 23 that supports the tip end side of the rotary shaft 22 is fixed by the support shaft 18 that supports the ladder bar 13. Therefore, the rotary shaft 22 can be stably supported without preparing a new part for fixing the bearing plate 23.
However, the bearing plate 23 may be fixed in advance at the position corresponding to the shaft hole 11g in the bearing portion 11e which is a support portion of the present invention. In that case, the bearing plate 23 corresponding to the shaft hole 11g to which the handle H is not attached is not used.
However, the bearing plate 23 may be omitted if the rotating shaft 22 can be stably supported only by the bearing member 24.

  Furthermore, in this embodiment, the rack member 28 constituting the release mechanism can be easily attached to the slide member 17 together with the handle H by the convex and concave portions for attachment. For this reason, the axial length of the rack member 28 can be set to a necessary length to engage with the pinion 26 and can be attached only to a necessary portion. Therefore, for example, the weight of the entire apparatus can be reduced as compared with the case where one long rack member corresponding to all the shaft holes 11g is used.

  In the above embodiment, the interval L2 between the shaft holes 11g is made to coincide with the interval between the ladder rails 13. However, this interval L2 is such that the handle H is placed at a place where an evacuee can easily operate during evacuation, such as a window or a veranda. There is no particular limitation as long as it can be attached, and there is no need to make it equidistant. However, the bearing plate 23 can be fixed using the support shaft 18 of the ladder bar 13 if the distance between the ladder bars 13 is adjusted as in the above embodiment. Further, the interval between the ladder bars 13 is a relatively narrow interval that allows an evacuee to evacuate safely and is sufficiently smaller than the opening height of a window or a veranda used as an evacuation path in an emergency. . Therefore, at least one or more shaft holes 11g can be positioned within the reach of the evacuees. That is, the position of the handle H can be changed to an optimum position for evacuation using the shaft hole 11g formed in advance.

The slide member 17 is pulled downward by a spring member (not shown) connected to the lower end and gravity. However, the slide member 17 may be provided with a means for pressing downward from the upper side. You may make it act the force which urges to.
When an upward force is applied to the slide member 17, the release mechanism releases the lock state by moving the slide member 17 downward via the rack member 28. In that case, the hook member 6 and the latch member 7 shown in FIG. 9 are attached upside down, the latch member 7 is fixed to the slide member 17 side, and the hook member 6 is fixed to the movable column 12 side. That's fine.
In addition, although the ladder apparatus for evacuation of the said embodiment is provided with the protection fence part B, the protection fence part B may not be provided.

  This is an evacuation ladder device that can be easily corrected at the site.

H Handle 6 (Lock mechanism) Hook member 7 (Lock mechanism) Hook member 11 Fixed column 11e (Support portion) Bearing portion 11g Shaft hole 12 Movable column 13 Ladder bar 17 Slide member 18 Support shaft 18a Nut 22 Rotating shaft 23 ( Bearing member) Bearing plate 28 Rack member 28a Rack portion 28b Convex portion 28c Convex portion

Claims (4)

A fixed column fixed to the building,
A movable column arranged along the fixed column;
A plurality of ladder bars spanned between these fixed and movable columns,
The movable column is moved close to the fixed column, and the movable column can be moved between a storage state in which the ladder bar is folded and stored between them and a use state in which the storage state is opened. on the other hand,
In the evacuation ladder apparatus provided with either one of the fixed column and the movable column or between them, the lock mechanism for maintaining the storage state,
A release mechanism for releasing the lock state of the lock mechanism;
A rotary shaft that operates the release mechanism and is detachable from the release mechanism;
A handle for rotating the rotating shaft,
A plurality of shaft holes for inserting the rotation shaft of the handle, which are formed in advance along the axial direction of the fixed column, are provided.
An evacuation ladder apparatus in which the rotary shaft is inserted into a shaft hole selected corresponding to a window position of a building among the shaft holes, and the rotary shaft is linked to the release mechanism. The fixed column is slidable in its axial direction, and is provided with a long slide member that is pressed or pulled either up or down,
The locking mechanism is
A hook member fixed to either the slide member or the movable column; and a latch member fixed to the other of the slide member or the movable column and latched to the hook member in the stored state. Become
The release mechanism is
A rack member attached to the slide member, and a pinion that rotates with the rotation of the rotation shaft of the handle and engages with the rack member. The rotation of the rotation shaft causes the slide member to be in the pressing or pulling direction. The hook member is moved away from the latch member by moving in the opposite direction, and the lock mechanism is released.
A convex portion is provided on any one of the pair of facing surfaces of the slide member and the rack member, and a concave portion on which the convex portion is fitted is provided on either one of the surfaces.
The escape ladder apparatus according to claim 1, wherein the convex portion or the concave portion on the slide member side is provided at a position corresponding to a shaft hole formed in the fixed column. A support part is provided at a position facing the shaft hole of the fixed column with a space therebetween,
The ladder apparatus for evacuation according to claim 1 or 2, wherein a bearing member that supports the distal end side of the rotating shaft of the handle is fixed to the support portion. The support portion is detachably provided with a support shaft that rotatably supports one end side of the ladder bar,
The ladder for evacuation according to claim 3, wherein the shaft hole is provided corresponding to the support shaft.

Images