JP5500625B2 - Evacuation device - Google Patents

Description

  The present invention relates to an evacuation device, and more particularly, to an evacuation device equipped with an evacuation ladder that is housed in a storage frame provided on a veranda or the like and can be evacuated by extending downward in an emergency. .

  Generally, as this kind of evacuation device, a storage frame fixed to an opening provided in a slab such as a veranda, and an upper lid and a lower lid pivotally attached to the floor surface side and the ceiling surface side of the storage frame, respectively 2. Description of the Related Art A telescope-type evacuation ladder, for example, that extends to the lower floor or its vicinity when the upper and lower lids are opened while being folded and stored in a storage frame is known.

  In the evacuation device configured as described above, since the evacuation ladder is cantilevered, it is necessary to reduce the weight of the ladder components, and even when the evacuation ladder is extended, the lowermost end is the floor on the lower floor. Since it is floating near the surface, when the evacuees descend, the ladder inevitably shakes, that is, the weight of the evacuees causes the phenomenon that the lower part of the ladder (foot side) moves away from the evacuees. It is a factor that hinders safe evacuation.

  Therefore, conventionally, in order to prevent the above-described shaking, the ladder unit includes a pair of vertical members having square cross-sections whose side surfaces are open, a horizontal member that connects the vertical members, A reinforcing member that opposes the horizontal member and connects the pair of vertical members below the horizontal member in the extension direction. The reinforcing member has a width in the extension direction and is adjacent to each other when the ladder is extended. Among the units, a telescope type is known in which the lateral member of the ladder unit positioned forward in the extending direction is hooked to the reinforcing member of the ladder unit positioned rearward (see, for example, Patent Document 1). ).

JP 2008-101340 A (Claims, FIGS. 1, 2, and 8)

  However, in the structure described in Patent Document 1, a plurality of ladder units constituting the ladder are each provided with a reinforcing member in addition to a pair of vertical members and a horizontal member installed between the vertical members. For this reason, the number of constituent members increases, the assembly becomes troublesome, the weight increases, and there is a concern about cost increase. Moreover, in the thing of patent document 1, since the vertical member is a shape which has a square cross-section part by which the side surface was open | released by the press work etc. generally from the metal member, the processing precision of the corner | angular part of a square cross-section part is enough In addition, since the entire sliding portion is in contact with the vertical members made of metal, there is a concern that the sliding portion of the left and right vertical members of each ladder unit may be displaced during extension and the entire ladder may be shaken. is there.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an evacuation apparatus that can reduce the weight of a ladder and provide the ladder with rigidity so that it can be evacuated safely.

In order to solve the above problems, the present invention is stored in a storage frame that is fitted and fixed to an opening provided on a floor surface of a veranda or the like, and is evacuated by extending to the lower floor in an emergency. In the evacuation device having a ladder, the evacuation ladder includes a vertical member formed in a substantially S-shaped cross section having a square cross-sectional portion that is open to the inside on the front side and the outer side on the back side, and the vertical member A plurality of ladder units composed of horizontal members that connect lower portions of the rear corner sections are connected to each other so that they can be extended and contracted, and the upper end side of the vertical member of the uppermost ladder unit is connected to one of the storage frames. It is attached to the bracket projecting on the side so that it can rotate, and the upper side cross section of the vertical member of the ladder unit and the lower side cross section of the vertical member of the ladder unit can slide. And the lower ladder except the uppermost one. A synthetic resin slide member having a rectangular cross section is fixed inside the upper end side of the angular cross section on the back side of the vertical member of the unit, and in the extended state of the escape ladder, in front of the upper ladder unit adjacent above The inner surface of the corner section on the side is formed so as to be slidably in contact with the slide member (claim 1).

By configuring in this way, each ladder unit constituting the evacuation ladder is formed in a pair of substantially S-shaped cross sections each having a square cross section with the inner side on the near side and the outer side on the far side open. These vertical members and a horizontal member that connects the lower portions of both vertical members in the horizontal direction can be used. Further, the vertical members of the ladder units adjacent vertically can be smoothly slid by the slide member made of synthetic resin . Further, in the extended state of the evacuation ladder, the load accompanying the weight of the refugee related to the overlapping portion of the vertical members of the adjacent ladder units can be dispersed by the slide member.

The invention of claim 2, in the evacuation apparatus of claim 1, wherein, with a gap fixedly between the longitudinal members of the corner section of the two adjacent sides of the lower ladder unit the slide member The two adjacent sides of the angular cross section of the vertical member of the upper ladder unit are slidably inserted into the gap.

  By comprising in this way, the adjacent 2 sides of the square cross-section part of a vertical member and the synthetic resin slide member can be slidably contacted.

  According to this invention, since it is configured as described above, the following excellent effects can be obtained.

(1) According to the first aspect of the present invention, the components of the evacuation ladder can be reduced, and the evacuation ladder can be expanded and contracted smoothly. The load accompanying the weight of the evacuees related to the overlapping parts of the vertical members of the ladder unit can be distributed, so the evacuation ladder can be reduced in weight and rigidity, and the evacuation ladder can be prevented from shaking, allowing safe evacuation can do.

(2) According to the invention described in claim 2, since the two adjacent sides of the angular cross section of the vertical member constituting the ladder unit and the sliding member made of synthetic resin can be slidably contacted, In addition to (1), the escape ladder can be extended and contracted smoothly, and the escape ladder can be prevented from shaking.

It is the perspective view (a) which shows the use condition (elongation state) of the escape ladder in this invention, and the I section expansion perspective view (b) of (a). It is a side view which shows the use condition (elongation state) of the said escape ladder. It is a front view which shows the use condition (elongation state) of the said escape ladder. It is a perspective view which shows the ladder unit in this invention. It is the perspective view (a) which shows the stopper member and lock member in this invention, and the II section enlarged perspective view (b) of (a). It is sectional drawing (b) which follows the III-III line of the top view (a) and (a) which shows the vertical member and slide member in this invention. It is a perspective view which shows the contracted state (folded state) of the said escape ladder. It is the disassembled perspective view (a) which shows the connection part of the vertical member and horizontal member in this invention, and the expanded sectional view (b) of a connection part. It is sectional drawing which shows the accommodation state of the said escape ladder. It is sectional drawing which follows the IV-IV line of FIG. It is a schematic perspective view which shows the use (elongation) procedure of the said escape ladder.

  Embodiments of an evacuation device according to the present invention will be described below in detail with reference to the accompanying drawings.

  The evacuation device of the present invention includes a rectangular storage frame 2 fitted and fixed to an opening 1a provided in a slab 1 such as a floor or a veranda, and a floor surface side and a ceiling surface of one side of the storage frame 2 An upper lid 3 and a lower lid 4 pivotally attached to the sides, an evacuation ladder 6 (hereinafter referred to as a ladder 6) which is folded and stored in the storage frame 2 and extends to the lower floor or the vicinity thereof, and this ladder 6, a slow mover 7 that lifts and stores the ladder 6, an open / close interlock mechanism 8 that opens and closes the upper lid 3 and the lower lid 4, and an extended ladder 6 that is tilted. The main part is comprised by the wire 9 for suspension to hold | maintain.

  The ladder 6 includes a pair of metal vertical members 20 having square cross-sections 6a and 6b whose side surfaces are open, and a metal horizontal member 21 that connects the lower portions of both vertical members 20 in the horizontal direction. A plurality of ladder units 60a to 60h (showing the case of eight stages in the drawing) are connected so as to be expandable and contractible, and in the extended state, the lowermost end of the ladder 6 does not reach the floor surface F of the lower floor. Is formed.

  The upper end side portion of the vertical member 20 of the uppermost ladder unit 60a is rotatably attached to a bracket 30 protruding from the one side 2a of the storage frame 2, and the ladder 6 is cantilevered.

  Further, the opposing side surface portions 2b and 2c of the storage frame 2 and both vertical members 20 constituting the upper ladder unit, that is, the uppermost ladder unit 60a, are connected by a flexible suspension wire 9. ing. The suspension wire 9 is formed so that the ladder 6 when extended is held in an inclined state.

  The vertical member 20 has a substantially S-shaped cross-section with back-to-back angular cross-sections 6a and 6b that open on the inner side and the outer side on the near side (front side as viewed from the front) of the ladder units 60a to 60h. Is formed. That is, as shown in FIG. 6, the vertical member 20 includes a crank-shaped base portion 20d in which the side pieces 20b and 20c are bent in the relative direction from both ends of the center piece 20a, and the distal ends of the side pieces 20b and 20c of the crank-shaped base portion 20d. The front piece 20e and the back piece 20f that are bent in an orthogonal shape from the front, and the front piece 20e and the back piece 20f are bent from the tip of the front piece 20e and the back piece 20f in a direction orthogonal to the center piece 20a. Are formed in a substantially S-shaped cross-section having back-to-back angular cross-section portions 6a and 6b formed of bent pieces 20h and 20i. The outer surfaces of the bent pieces 20h and 20i are located on the inner side of the vertical member 20 by the plate thickness with respect to the outer surfaces of the side pieces 20b and 20c.

  The transverse member 21 is connected to the opposing side piece 20c of the corner section 6b on the back side of the pair of longitudinal members 20. In this case, as shown in FIG. 5, FIG. 7 and FIG. 8, the transverse member 21 is inward from a pair of hanging pieces 21b bent on both sides in the longitudinal direction of the flat upper surface piece 21a and from the lower ends of both hanging pieces 21b. A pair of lower horizontal pieces 21c bent toward the first end vertical piece 21d bent in an orthogonal shape from the end of one hanging piece 21b at the end in the longitudinal direction; It has a second end vertical piece 21e that is bent inwardly from the end of the other hanging piece 21b and overlapped with the outer surface of the first end vertical piece 21d. Then, the first and second end vertical pieces 21d and 21e at the end in the longitudinal direction of the horizontal member 21 are connected and fixed to the opposing side piece 20c of the corner section 6b on the back side of the vertical member 20 with a rivet 90. ing. In this case, as shown in FIG. 8, the side piece 20c of the vertical member 20 is formed with a substantially oval-shaped protrusion 201 that protrudes inward by, for example, drawing, and the protrusion 20l is perforated. The rivet 90 to be inserted into the provided mounting hole 20m penetrates the mounting hole 21f formed in the first and second end vertical pieces 21d and 21e of the horizontal member 21, and is caulked inside the horizontal member 21. It is fixed.

  In the ladder unit formed as described above (represented by reference numeral 60 below), the corner section 6a on the front side of the vertical member 20 of the upper ladder unit 60 and the back side of the vertical member 20 of the lower ladder unit 60. The corner cross section 6b is slidably polymerized.

  Also, a synthetic resin slide member 40 having a rectangular cross section is fixed inside the upper end side of the angular cross section 6b on the back side of the vertical member 20 of the lower ladder unit 60 except the uppermost stage. In the extended state, the inner surface of the front corner section 6a of the upper ladder unit 60 adjacent to the upper side is formed so as to slidably contact the slide member 40 (see FIG. 6). In this case, protrusions 41 are provided at two locations on both sides in the longitudinal direction of one side surface of the slide member 40. By fitting these protrusions 41 into the mounting holes 20j provided in the back piece 20f of the vertical member 20, the slide member 40 is bent with the back piece 20f in the corner section 6b on the back side of the vertical member 20. Fixed in contact with the piece 20i. In this state, between the slide member 40 and the central piece 20a and the side piece 20b, the front piece 20e and the bent piece 20i that form the square cross section 6a on the front side of the adjacent vertical member 20 are slidable. A gap 20k that can be inserted is provided (see FIG. 6A).

  As described above, the slide member 40 made of synthetic resin having a rectangular cross section is fixed inside the upper end side of the angular cross section 6b on the back side of the vertical member 20 of the ladder unit 60, and in the extended state of the ladder 6, By forming the inner surface of the square cross section 6a on the near side of the upper ladder unit 60 adjacent to the upper side so as to be slidably in contact with the slide member 40, the ladder 6 which is adjacent to the sliding of the metal members relative to each other is formed. Can be smoothly contracted. That is, the sliding between the corner sections 6a and 6b of the metal vertical member 20 requires high-precision processing of the corners of the corner sections 6a and 6b, but as described above, the slide made of synthetic resin. The two adjacent pieces of the member 40 and the vertical member 20, that is, the front piece 20e and the bent piece 20i are slidably contacted, so that the sliding portions of the left and right vertical members 20 slide smoothly without any deviation. be able to. Furthermore, when the ladder 6 is extended, the slide member 40 shares (distributes) the load due to the weight of the evacuees applied to the ladder 6 as a compressive force, thereby preventing the ladder 6, that is, the vertical member 20 from being deformed. it can.

  Further, on the upper end side of the pair of vertical members 20 constituting the ladder units 60b to 60g excluding the uppermost and lowermost ladder units 60a and 60h, the side of the ladder units 60a to 60f adjacent to the upper side when the ladder 6 is extended. A stopper member 50 and a lock member 70 are attached to engage the member 21 to prevent the ladder from shifting.

  That is, the stopper piece 51 that protrudes on the back side on the opposing surface portion of the corner section 6b on the back side of the pair of vertical members 20 constituting the ladder units 60b to 60g excluding the top and bottom ladder units 60a and 60h. A fixed piece 50 a of a plate-like stopper member 50 bent in a crank shape having a fixed shape is fixed by a fixing bolt 52. Further, the fixing piece 50a of the stopper member 50 is rotatable about a fixing bolt 52 which is an axis orthogonal to the longitudinal direction of the vertical member 20, and has a locking member 70 having a locking claw portion 71 at the tip. And a spring member 72 that biases the elastic force of the distal end portion of the lock member 70 to the rear side at all times.

  By providing the stopper member 50 and the lock member 70 formed as described above, in the extended state of the ladder 6, the upper ladder units 60b to 60f (hereinafter denoted by reference numeral 60) adjacent to the stopper piece 51 of the stopper member 50 are provided. The locking claw portion 71 of the lock member 70 is locked to the lower surface of the horizontal member 21 of the adjacent upper ladder unit 60, and the stopper piece 51 and the locking claw portion are 71, the horizontal member 21 is clamped and fixed. Accordingly, it is possible to prevent the ladder 6 from being displaced or deformed due to the weight (load) of the refugee during evacuation (extension).

  The stopper member 50 has an unlocking portion 53 that engages with the upper locking member 70 to release the spring force of the spring member 72 when the ladder 6 is displaced from the extended state to the contracted state. Is formed. The unlocking portion 53 is formed by a step portion formed between the fixed piece 50 a of the stopper member 50 and the stopper piece 51. By providing the lock release portion 53 in the stopper member 50 in this way, when the ladder 6 is displaced from the extended state to the contracted state, the lock release portion 53 provided in the stopper member 50 of the lower ladder unit 60 is The ladder 6 can be easily contracted by engaging the lock member 70 and releasing the urging force of the spring member 72 attached to the lock member 70.

  The ladder 6 contracted as described above is folded in a state in which the vertical members 20 of the respective ladder units 60a to 60h are stacked, and after being rotated into the storage frame 2 by the pivotal attachment portion by the bracket 30 at the upper end, The upper lid 3 and the lower lid 4 are closed and stored (see FIG. 9).

  The upper lid 3 and the lower lid 4 are pivotally attached to one side end portions of the storage frame 2 via hinges 3a and 4a, respectively, and both sides of the upper lid 3 and the lower lid 4 and the storage frame 2 The upper lid 3 and the lower lid 4 can be opened and closed in conjunction with each other by a pair of opening and closing interlocking mechanisms 8 attached to the opposing side surface portions 2b and 2c. A handle portion 5 is fixedly provided on the inner surface side of the center of the upper lid 3.

  A latch mechanism 80 that opens the upper lid 3 in an emergency is provided. As shown in FIG. 9, the latch mechanism 80 is provided on the locking member 81 provided on the free end side of the upper lid 3 and the side surface portion 2 d of the storage frame 2, and the upper lid 3 and the lower lid 4 are in a closed state. The engaging member 82 is engageable with the engaging member 81.

  When the evacuation device configured as described above is used in an emergency such as a fire, first, the engagement between the locking member 81 and the engagement member 82 of the latch mechanism 80 is released, and then, as shown in FIG. Thus, when the upper lid 3 and the lower lid 4 are opened, simultaneously with the opening of the upper lid 3 and the lower lid 4, the ladder 6 is rotated downward with the ladder 6 placed on the lower lid 4 as shown in FIG. . Then, as shown in FIG. 11 (c), the ladder 6 is extended and lowered while being controlled by the gentler 7, and the upper ladder unit 60 adjacent to the upper stage is provided with the stopper member 50 provided on the lower ladder unit 60. The locking claw portion 71 of the locking member 70 contacts the lower surface of the horizontal member 21, and the horizontal member 21 is clamped and fixed by the stopper member 50 and the locking member 70. In this state, the ladder 6 is held by the suspension wire 9 in an inclined state toward the near side (see FIGS. 1 to 3).

  As described above, in use (when evacuating), the ladder 6 is extended in an inclined manner by the suspension wire 9. In this state, when the evacuees descend, the weight (load) of the evacuees applied to the ladder 6 is dispersed by the slide member 40 in accordance with the weight of the evacuees related to the overlapping portion of the vertical members 20 of the adjacent ladder units 60. be able to. Therefore, the ladder 6 can be prevented from shaking and can be evacuated safely.

  When the ladder 6 is retracted from the use state (extended state) and stored, the wire of the gentler 7 is wound up and the lowermost ladder unit 60h is slid relative to the adjacent ladder unit 60g. Move it upwards. At this time, the lock release portion 53 provided on the stopper member 50 fixed to the vertical member 20 of the lower ladder unit 60 engages with the upper lock member 70 and the spring member 72 attached to the lock member 70 is elastic. While releasing the energizing force, the ladder units 60 are sequentially pulled up and overlapped. And the upper cover 3 and the lower cover 4 are closed in the state accommodated in the storage frame 2. FIG.

  Moreover, according to the evacuation apparatus of the said embodiment, each ladder unit 60a-60h which comprises the ladder 6 is made into a pair of vertical member 20 which has the square cross-section part 6a, 6b by which the inner side and the outer side surface were open | released, Since it can be comprised with the horizontal member 21 which connects the lower parts of both the vertical members 20, compared with the ladder suspended only by the conventional upper end part, the rigidity of the vertical member 20 can be reduced, Therefore The weight can be reduced and the cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Slab 2 Storage frame 2a One side of storage frame 6,6A Evacuation ladder 6a, 6b Square cross-section part 9 Suspension wire 20 Vertical member 21 Horizontal member 20g Opening part 20j Mounting hole 20k Gap 40 Slide member 41 Projection part 50 Stopper member 50a Fixed piece 51 Stopper piece 53 Unlocking part 60, 60a-60h Ladder unit 70 Lock member 71 Locking claw part 72 Spring member

Claims (2)

In an evacuation device having an evacuation ladder stored in a storage frame fitted and fixed to an opening provided on a floor surface such as a veranda and capable of evacuating by extending to the lower floor in an emergency,
The evacuation ladder includes a vertical member formed into a substantially S-shaped cross section having a square cross-sectional portion that is open to the inside on the front side and an outer side on the back side, and a corner cross-sectional portion on the back side of the vertical member. A plurality of ladder units composed of horizontal members that connect the lower parts are connected so as to be extendable,
The upper end side of the vertical member of the uppermost ladder unit is rotatably attached to a bracket protruding from one side of the storage frame,
The lower ladder unit excluding the uppermost stage is formed such that the square section on the near side of the vertical member of the upper ladder unit and the square section on the inner side of the vertical member of the lower ladder unit are slidably superposed. A synthetic resin slide member having a rectangular cross section is fixed inside the upper end side of the angular cross section on the back side of the vertical member, and in the extended state of the escape ladder, the front side of the upper ladder unit adjacent to the upper side Formed so that the inner surface of the angular cross section of the slidable contact with the slide member ,
An evacuation device characterized by that. The evacuation device according to claim 1 ,
The slide member is fixed with a gap between the adjacent two sides of the vertical cross section of the vertical member of the lower ladder unit, and the adjacent two sides of the vertical cross section of the vertical member of the upper ladder unit are Slidably inserted into the gap,
An evacuation device characterized by that.

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