JP6901060B2 - Locking tool for evacuation ladder device and evacuation ladder device equipped with this - Google Patents

Description

The present invention relates to a locking tool that detachably locks the frame and the upper lid of the evacuation ladder device, and an evacuation ladder device provided with the locking tool.

Evacuation ladder devices are installed on the floors of apartment houses such as balconies and balconies so that they can evacuate downstairs in the event of an emergency such as a fire. The evacuation ladder device includes a foldable ladder, a frame for accommodating the ladder, and an upper lid and a lower lid for closing the upper and lower openings of the frame when the ladder is not in use.

For example, on the upper floors of a high-rise building, strong winds blow, so the vibration of the lid and the noise that accompanies it become a problem. In particular, since the upper lid has a gap between the frame and the frame when the handle is lifted, when the wind blows into the gap, the upper lid vibrates up and down, causing noise.

In order to deal with this problem, Patent Document 1 describes an engagement having a locking member provided on the upper lid and having an engaging hole and an inclined engaging convex portion provided on the peripheral wall of the frame and capable of engaging with the engaging hole. A member and an engagement / disengagement mechanism including the member are disclosed.

Japanese Patent No. 5062900

However, in such measures against strong winds, a locking member is attached to the upper lid side and an engaging member is attached to the frame side. Therefore, in order to add the above-mentioned engagement / disengagement mechanism to the existing evacuation ladder device, evacuation is required. It is necessary to replace the ladder device as a whole, which is not realistic from the viewpoint of construction labor and cost.

Therefore, the present invention has a locking tool that can be easily additionally attached to an existing evacuation ladder device that is not provided with measures to prevent vibration of the upper lid due to strong wind, and an evacuation ladder provided with such a locking tool. The purpose is to provide the device.

In order to solve the above-mentioned problems, the present invention has a frame having openings at the upper and lower sides, a ladder that is stored in the frame in a folded state, and a frame that is rotatably attached to the frame. In an evacuation ladder device including an upper lid that covers an upper opening and a lower lid that is rotatably attached to the frame and covers an opening below the frame, the upper lid and the frame are detachably locked. An elastically deformable locking tool, a fixing piece fixed to the upper lid, a hanging piece extending from the fixing piece to the outside of the frame toward the lower lid, and a hanging piece extending from the hanging piece to the outside of the frame. Engages the operation piece exposed from between the upper lid and the frame with the hole formed in the frame, and releases the engagement state with the hole as the operation piece is pushed up. The locking tool is provided so as to include a protrusion protruding from the hanging piece toward the frame.

In the locking tool of the present invention having the above-described configuration, it is preferable that the tip of the protrusion on the lower lid side is rounded.

In the locking tool of the present invention having the above-described configuration, it is preferable that the protrusion is inclined so that the tip thereof faces the upper lid side.

Further, the present invention includes a frame having openings at the upper and lower sides, a ladder housed in the frame in a folded state, and an upper lid rotatably attached to the frame to cover the upper opening of the frame. A lower lid that is rotatably attached to the frame and covers the opening below the frame, and an elastically deformable locking tool that detachably locks the upper lid and the frame. The locking tool includes a fixing piece fixed to the upper lid, a hanging piece extending from the fixing piece to the outside of the frame toward the lower lid, and a hanging piece extending from the hanging piece toward the outside of the frame. The hanging so as to engage the operation piece exposed from between the upper lid and the frame and the hole formed in the frame and release the engagement state with the hole when the operation piece is pushed up. An evacuation ladder device The evacuation ladder device is provided, which comprises a protrusion protruding from one piece toward the frame.

According to the present invention, a locking tool that can be easily additionally attached to an existing evacuation ladder device that is not provided with measures to prevent vibration of the upper lid due to strong wind, and an evacuation ladder provided with such a locking tool. Equipment can be provided.

It is sectional drawing which shows schematicly about the evacuation ladder apparatus which concerns on this embodiment. It is an enlarged view of the area A of FIG. It is a perspective view of the locking tool in this embodiment. It is a figure which looked at the locking tool of FIG. 3 from the alignment direction of the protrusion piece. It is a figure which shows the procedure of opening the top lid of the evacuation ladder device.

Hereinafter, the evacuation ladder device and the locking tool according to a typical embodiment of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to these drawings. In addition, since the drawings are for conceptually explaining the present invention, the dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

[Overall configuration of evacuation ladder device]
The overall configuration of the evacuation ladder device 1 will be described with reference to FIGS. 1 and 2.
The evacuation ladder device 1 is an evacuation device that is installed on the floor surface of a high-rise building such as a balcony or balcony and extends the foldable ladder 3 downstairs in an emergency such as a fire. The evacuation ladder device 1 has a box shape as a whole, and as shown in FIG. 1, is configured to include a frame 2, a ladder 3, a connecting mechanism 4, an upper lid 5, a lower lid 6, and a locking tool 7. ..

The frame 2 is a frame body for accommodating the ladder 3 and the connecting mechanism 4. The frame 2 is composed of two sets of peripheral walls facing each other, and opens vertically upward and vertically downward. As shown in FIG. 2, a hole 22 into which the protrusion 74 of the locking tool 7 is inserted is formed in the vicinity of the upper edge of the peripheral wall 21 of the frame 2 corresponding to the free end 52 of the upper lid 5. The hole 22 will be described again in relation to the locking tool 7.

The ladder 3 is stored in the frame 2 in a folded state, and extends downward when the upper lid 5 and the lower lid 6 are opened. The connecting mechanism 4 connects the upper lid 5 and the lower lid 6.

The upper lid 5 is a lid body that covers the upper opening of the frame 2, and is attached to the frame 2 via a shaft 51. Since the shaft 51 is provided along one side forming the upper edge of the frame 2, the upper lid 5 can rotate about the shaft 51 in the direction of the arrow R1 in FIG. A screw hole 53 for fixing the locking tool 7 is formed on the free end 52 side of the upper lid 5 opposite to the shaft 51.

The lower lid 6 is a lid body that covers the opening on the lower side of the frame 2, and is attached to the frame 2 via a shaft 61. Since the shaft 61 is provided along one side forming the lower edge of the frame 2, the lower lid 6 can rotate in the direction of the arrow R2 in FIG.

The locking tool 7 is an elastically deformable member fixed to the upper lid 5, and detachably locks the upper lid 5 and the frame 2. Details of the locking tool 7 will be described later.

[Structure of locking tool]
The locking tool 7 will be described in detail with reference to FIGS. 2 to 4.
As described above, the locking tool 7 is a member that detachably locks the upper lid 5 and the frame 2, and is made of, for example, stainless steel (for example, SUS304) or spring steel such as iron. From the viewpoint of easy handling and unlocking, the locking tool 7 can be elastically deformed to some extent when a force is applied in the directions indicated by the arrows in FIGS. 5 (b) and 5 (c). When the force is released, it may have the property of returning to its original shape. As shown in FIG. 3, such a locking tool 7 includes a fixing piece 71, a hanging piece 72, an operating piece 73, and a protrusion 74.

The fixing piece 71 is a plate-shaped portion that abuts on the inner surface (lower surface) of the upper lid 5 so that the locking tool 7 is fixed to the upper lid 5. In the present embodiment, the fixing piece 71 is formed with screw holes 75 (holes 75A, 75B). As shown in FIG. 2, a screw 76 is inserted into the screw hole 75 in a state of being overlapped with the screw hole 53 of the upper lid 5, whereby the locking tool 7 is attached to the upper lid 5. However, the fixing means between the upper lid 5 and the locking tool 7 is not limited to screws, and may be, for example, welding.

As shown in FIG. 2, the hanging piece 72 is a plate-shaped portion that is integrally formed with the fixing piece 71 and that hangs the outside of the peripheral wall 21 of the frame 2 from the fixing piece 71 toward the lower lid 6. The hanging piece 72 is provided with a protrusion 74 projecting toward the peripheral wall 21 of the frame 2. The protrusion 74 will be described later.

The operation piece 73 is a plate-shaped portion that is integrally formed with the hanging piece 72 and extends from the lower end of the hanging piece 72 to the outside of the frame 2. The operation piece 73 is exposed from between the upper lid 5 and the frame 2, and allows the operator to operate the operation piece 73.

As described above, the protrusion 74 projects from the hanging piece 72 toward the frame 2 (peripheral wall 21). As shown in FIG. 2, the protrusion 74 engages with the hole 22 of the frame 2 in a state where the locking tool 7 locks the upper lid 5 and the frame 2. In this embodiment, the protrusion 74 includes a plurality of protrusions 74A, 74B aligned along the longitudinal direction of the hanging piece 72, as shown in FIG. Since the protrusion 74 includes the plurality of protrusion pieces 74A and 74B in this way, the locked state between the upper lid 5 and the frame 2 can be reliably maintained, and therefore the noise due to the vibration of the upper lid 5 in a strong wind is effective. Can be deterred.

As shown in FIG. 4, the tip portion 76 of the protrusion 74 has a rounded curved surface shape on the lower lid 6 side. Therefore, the tip portion 76 of the protrusion 74 does not get caught in the lower edge of the hole 22 of the frame 2, and the upper lid 5 can be smoothly opened and closed in both the locking and the unlocking.

In the present embodiment, the protrusion 74 is tilted with respect to the hanging piece 72 so that the tip portion 76 faces the upper lid 5 side. The inclination α of the hanging piece 72 of the protrusion 74 with respect to the extending direction (vertically downward) is preferably 90 degrees or more and 135 degrees or less, and is about 120 degrees in this embodiment. By tilting the protrusion 74 toward the upper lid 5 in this way, when an unintended upward force acts on the upper lid 5 due to wind or mischief, the locked state between the upper lid 5 and the frame 2 can be reliably maintained. .. Further, since the protrusion 74 keeps in contact with the upper edge of the hole 22 of the frame 2 in such a locked state, noise due to vibration of the upper lid 5 can be reliably prevented.

When such a locking tool 7 receives an upward force on the operation piece 73, the hanging piece 72 and the operation piece 73 are elastically deformed so as to rotate about the boundary 77 between the hanging piece 72 and the fixed piece 71. .. As a result, the engagement state between the protrusion 74 and the hole 22 of the peripheral wall 21 is released, and the upper lid 5 opens (see FIG. 5). In the present embodiment, the force required to open the upper lid 5 is approximately 2 kgf (19.6 N) to 5 kgf (49 N).

Since the locking tool 7 is composed of one member, it can be incorporated in the evacuation ladder device 1 in advance, or can be attached to the existing evacuation ladder device. In order to attach the locking tool 7 to the existing evacuation ladder device, the locking tool 7 is fixed to the upper lid 5 by a fixing means such as a screw 76, and is attached to the protrusion 74 of the locking tool 7 on the peripheral wall 21 of the frame 2. The hole 22 may be drilled at the corresponding position by a drilling means such as a drill.

[Procedure to open the top lid]
The procedure for opening the upper lid 5 of the evacuation ladder device 1 will be described with reference to FIG.
As shown in FIG. 5A, the upper lid 5 and the frame 2 are locked by the locking tool 7. In this state, the protrusion 74 of the locking tool 7 is inserted into the hole 22 of the frame 2 (peripheral wall 21). Since the protrusion 74 is tilted so as to face the upper lid 5 side as described above, the locked state between the upper lid 5 and the frame 2 is not released easily or unintentionally. Further, since the protrusion 74 continues to abut on the upper edge of the hole 22, noise due to vibration of the upper lid 5 is prevented.

When the operation piece 73 of the locking tool 7 is pulled up, the locking tool 7 is elastically deformed as shown in FIG. 5B, and is fixed around the boundary 77 (see FIG. 4) between the fixing piece 71 and the hanging piece 72. The piece 71 and the operation piece 73 rotate. As a result, the protrusion 74 of the locking tool 7 comes off from the hole 22 of the frame 2 and is pulled out to the outside of the peripheral wall 21. At that time, since the lower lid 6 side of the tip portion 76 of the protrusion 74 has a rounded curved surface shape as described above, it does not get caught in the lower edge of the hole 22. As a result, the protrusion 74 can be smoothly taken in and out of the hole 22, and the upper lid 5 (locking tool 7) can be smoothly locked and released from the frame 2.

When the operation piece 73 of the locking tool is further pulled up, the upper lid 5 opens as shown in FIG. 5 (c). At the same time, the lower lid 6 opens, and the ladder 3 extends downstairs.

As described above, since the locking tool 7 can be easily attached to the evacuation ladder device to which the strong wind vibration countermeasure is not applied, it is an effective countermeasure against the strong wind vibration to the existing evacuation ladder device. On the other hand, when the countermeasure against strong wind vibration is composed of a plurality of parts (see Patent Document 1), it is necessary to provide a locking member on both the upper lid side and the frame side, which is added to the existing evacuation ladder device. It's difficult to do. In the present embodiment, since it is only necessary to add one locking tool 7 to the upper lid 5, it is excellent in workability and construction cost.

Although the typical embodiments of the present invention have been described above, the present invention is not limited to these, and various design changes are possible, and these are also included in the present invention. For example, in the above embodiment, the mode in which the tip portion 76 of the protrusion 74 is tilted with respect to the hanging piece 72 so as to face the upper lid 5 side has been described, but the basic aspect of the present invention is that even if there is no such tilt. The effect is obtained. For example, it may extend in a substantially vertical direction from the hanging piece 72.

1 ... Evacuation ladder device,
2 ... frame,
3 ... Ladder,
5 ... Top lid,
6 ... Lower lid,
7 ... Locking tool,
22 ... hole,
72 ... hanging piece,
73 ... Operation piece,
74 ... Protrusion.

Claims (2)

A frame having openings at the top and bottom, a ladder that is folded and stored in the frame, an upper lid that is rotatably attached to the frame and covers the opening above the frame, and a rotation on the frame. An elastically deformable locking tool that detachably locks the upper lid and the frame in an evacuation ladder device including a lower lid that is movably attached and covers an opening below the frame.
The fixing piece fixed to the upper lid and
A hanging piece extending from the fixed piece to the outside of the frame toward the lower lid,
An operation piece that extends from the hanging piece toward the outside of the frame and is exposed from between the upper lid and the frame.
A protrusion protruding from the hanging piece toward the frame so as to engage with the hole formed in the frame and release the engagement state with the hole when the operation piece is pushed up.
Equipped with a,
The protrusion is inclined so that the tip faces the upper lid side,
The tip of the protrusion on the lower lid side is rounded.
A locking tool characterized by. A frame with openings above and below,
A ladder that is folded and stored in the frame,
An upper lid that is rotatably attached to the frame and covers the opening above the frame,
A lower lid that is rotatably attached to the frame and covers the opening below the frame,
An elastically deformable locking tool that detachably locks the upper lid and the frame is provided.
The locking tool is
The fixing piece fixed to the upper lid and
A hanging piece extending from the fixed piece to the outside of the frame toward the lower lid,
An operation piece that extends from the hanging piece toward the outside of the frame and is exposed from between the upper lid and the frame.
A protrusion protruding from the hanging piece toward the frame so as to engage with the hole formed in the frame and release the engagement state with the hole when the operation piece is pushed up.
Have a,
The protrusion is inclined so that the tip faces the upper lid side,
The tip of the protrusion on the lower lid side is rounded.
An evacuation ladder device featuring.

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