JP4646133B2 - Evacuation device - Google Patents

Description

  The present invention relates to an evacuation device, and more particularly to an evacuation device having an upper lid and a lower lid.

  Generally, as this type of evacuation device, a storage frame that is fitted and fixed to an opening provided in a slab such as a floor and a veranda, and an upper lid that is pivotally attached to the floor surface side and the ceiling surface side of the storage frame. In addition, there are known ones including a pantograph type ladder that is folded and stored in a storage frame and extends to the lower floor or the vicinity thereof when the upper and lower lids are opened.

  In view of privacy, the evacuation device configured as described above generally has an interlocking structure in which the lower lid is opened when the upper lid is opened, and the lower lid can be opened by operation from the downstairs. The structure is not possible. Therefore, for example, there has been a problem that the evacuation from the lower floor to the upper floor of the basement or the like and the rescuer from the lower floor of the rescuer cannot be performed sufficiently.

  As a means for solving this problem, for example, an opening operating end is attached to one end of an opening lever pivotally attached to the inner surface of the storage frame, the other end is engaged with the upper lid, and the operating end is pulled down. Thus, there is known a structure in which the upper lid is opened from the downstairs side and the lower lid is opened to lower the ladder (for example, see Patent Document 1).

As another opening / closing device, the upper lid release lever is formed by a long lever portion that is positioned substantially parallel to the inner surface of the upper lid with the upper lid closed, and an operation portion provided at the rear end of the long piece lever portion. The upper lid release lever is provided in the main body so as to be rotatable about an axis provided at a predetermined position of the long piece lever portion, and a part of the operation portion is exposed from the lower lid, and the operation portion is There is a known structure in which, when pulled, the tip of the long lever portion acts on the inner surface of the upper lid with the shaft as a fulcrum to push up the upper lid (see, for example, Patent Document 2).
Japanese Utility Model Laid-Open No. 7-13352 (claims for utility model registration, FIGS. 22 and 23) Japanese Patent No. 2722337 (Claims, FIG. 1)

  However, since all of the conventional opening / closing mechanisms have a structure in which the upper lid is opened by directly transmitting the pulling force of the operation unit to the opening lever, a large force is required to open the upper lid. In order to make it fully open, there was a problem that the pulling stroke of the release lever had to be increased. Also, since the evacuation device is not used for anything other than emergency evacuation, there are cases where a flowerpot or the like is usually placed on the upper lid, and in such a case, a situation occurs in which the upper lid cannot be opened even if the operation unit is pulled, There is a possibility that the evacuation from the lower floor to the upper floor and the relief activities from the lower floor of the rescuer may not be sufficiently performed.

  This invention is made in view of the said situation, and makes it a subject to provide the evacuation apparatus which made it easy to open | release an upper cover and a lower cover from the downstairs side, without requiring big force and a big pull stroke. Is.

  In order to solve the above-described problems, an evacuation device according to the present invention includes a storage frame fitted and fixed to an opening provided in a floor, a veranda or the like slab, and a floor surface side and a ceiling surface side of the storage frame. An upper lid and a lower lid pivotably attached to each other, an opening / closing interlocking mechanism for opening and closing the upper lid and the lower lid in conjunction with each other, and being folded and stored in the storage frame, and the upper lid and the lower lid are In an evacuation device comprising a ladder extending to the lower floor or the vicinity thereof when opened, a substantially intermediate portion is pivotally attached to the storage frame, and an operation end is provided on the pivot lid side of the upper lid and the lower lid. An open arm having a base end portion pivotally attached to the storage frame, a free end portion engaging with a lower surface of the upper lid so as to be movable in contact, and an end portion pivotally attached to the other end portion of the open arm. And the other end is pivotally attached to the substantially middle part of the working arm. Comprising a lid opening mechanism comprising a chromatography arm, characterized in that (claim 1).

  With this configuration, when the operating portion at one end of the open arm is pulled downward, the other end of the open arm is rotated upward, and the free end of the working arm is moved via the intermediate arm accordingly. The upper lid can be opened by rotating upward, and the lower lid interlocked with the upper lid can be opened via the opening / closing interlock mechanism.

  In the present invention, the free end of the working arm may be in any form as long as the free end of the working arm is engaged with the lower surface of the upper lid so as to be movable. It is preferable to pivotally attach a synthetic resin wheel that is in contact with the lower surface of the upper lid so as to allow rolling.

  With this configuration, when the free end of the action arm moves upward, the wheel comes into contact with the lower surface of the upper lid so that it can roll, so that the contact friction between the action arm and the upper lid can be reduced. .

  Since the evacuation device of the present invention is configured as described above, the following effects can be obtained.

  (1) According to the first aspect of the present invention, when the operating portion at one end of the open arm is pulled downward, the other end of the open arm rotates upward, and accordingly, the working arm is interposed via the intermediate arm. The free end of the door can be rotated upward to open the upper lid, and the lower lid interlocked with the upper lid can be opened via the opening / closing interlock mechanism, so that it does not require a large force or a large pulling stroke from the downstairs side. The upper and lower lids can be easily and reliably opened. Therefore, it is possible to promptly perform evacuation from the lower floor to the upper floor and the rescuer from the lower floor of the rescuer.

  (2) According to the invention described in claim 2, when the free end portion of the action arm moves upward, the wheel comes into contact with the lower surface of the upper lid so that it can roll, and the contact friction between the action arm and the upper lid is reduced. Since it can reduce, in addition to said (1), opening of an upper cover can be made easy and reliable further.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the best embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a use state of an evacuation device according to the present invention, FIG. 2 is a schematic cross-sectional view showing a state in which an upper cover and a lower cover are opened in the present invention, and FIG. FIG. 4 is an enlarged sectional view taken along line II-II in FIG. 3, and FIG. 5 is a sectional view in FIG. 3 (b). FIG.

  The evacuation device of the present invention is pivotally attached to a storage frame 2 fitted and fixed to an opening 1a provided in a slab 1 such as a floor or a veranda, and to the floor surface side and the ceiling surface side of the storage frame 2 respectively. The upper lid 3 and the lower lid 4, the pantograph-type ladder 6 which is folded and stored in the storage frame 2 and extends to the lower floor or the vicinity thereof, and the ladder 6 is controlled while controlling the extension and descent speed of the ladder 6. A lowering mechanism 7 for pulling up and storing the upper lid 3, an opening / closing interlocking mechanism 10 for opening and closing the upper lid 3 and the lower lid 4, an upper lid opening mechanism 20 for opening the upper lid 3 from the downstairs side, The main part is composed of a ladder extending chain 8 connected to the ladder storing release part. The upper lid 3 is provided with a lock mechanism 30 that prevents the upper lid 3 from being opened by mischief or careless operation.

  In this case, the ladder 6 is constructed such that a plurality of stepping horizontal bars 6b are horizontally placed between a pair of expansion and contracting bodies 6c pivotally attached to the plurality of vertical bars 6a in a pantograph manner, and are placed in the storage frame 2. It is folded and stored, and can extend to the lower floor or its vicinity. In addition, a hoisting wire 9 is connected between the horizontal beam 6b laid between the lower vertical beam 6a and the take-up drum 7a of the gentler 7.

  As shown in FIGS. 2 and 3, the storage frame 2 has four side wall members each having an outward upper flange 2a at the upper end and an outward L-shaped lower flange 2b bent at the lower end. It has a structure in which 2c is a rectangular frame. Further, a fixture 40 is fixed to the inner side surface of the side wall member 2c on the ladder attachment side with fixing bolts and nuts (not shown), and the upper end of the vertical beam 6a at the top of the ladder 6 is pivoted to the bracket 41 of the fixture 40. The pivot bolt 42 is pivotally supported by the pivot bolt 42. When the fixture 40 is fixed, the ladder 6 folded in advance can be attached to the fixture 40 so that the ladder 6 can be attached simultaneously with the fixing operation of the fixture 40. An L-shaped anchor member 2d is fixed to the outer surface of the side wall member 2c of the storage frame 2 by spot welding or the like.

  The upper lid 3 and the lower lid 4 are pivotally attached to one end of the storage frame 2 (the right end in FIG. 2) via hinges 3a and 4a, respectively. The upper lid 3 and the lower lid 4 can be opened and closed in conjunction with each other by a pair of opening / closing interlocking mechanisms 10 attached to the side walls 2c facing both sides and the storage frame 2. A handle portion 5 is fixedly provided on the inner surface side of the center of the upper lid 3.

  In this case, the open / close interlock mechanism 10 includes a bell crank-shaped intermediate link 12 that is pivotally attached to the storage frame 2 by a first pivot pin 11a and a first arm of the intermediate link 12. One end is pivotally attached to the bracket 12 fixed at one end to the portion 12a by the second pivot pin 11b and the other end to the lower surface of the upper lid 3 by the third pivot pin 11c. The second arm portion of the intermediate link 12 is pivotally attached to the lower lid 4 by the fourth pivot pin 11d and is slidable and rotatable in the long hole 15 provided at the other end. The lower link 16 is slidably and slidably pivoted on 12b.

  According to the opening / closing interlock mechanism 10 configured as described above, when the upper lid 3 is opened from the closed state, the intermediate link 12 rotates clockwise in FIG. 2 via the upper link 14 in accordance with the opening operation of the upper lid 3. Then, the second arm portion 12b of the intermediate link 12 is moved downward. At this time, when the rotation of the intermediate link 12 is started, the fifth pivot pin 11e slides in the long hole 15 and the lower link 16 does not move, so the load when the upper lid 3 is opened is reduced. Further, when the intermediate link 12 is further rotated, the lower lid 4 is opened via the lower link 16 as the intermediate link 12 is rotated.

  The locking mechanism 30 is provided on the locking metal 31 and protrudes inwardly from the storage frame 2 and has a plate-like locking metal 31 that is pivotably suspended from the lower surface of the upper lid 3 on the free end side. The rod-shaped latching protrusion 33 can be engaged and disengaged with the elongated latching hole 32 extending in the vertical direction.

  In this case, as shown in FIGS. 3 (b) and 5, the locking bracket 31 includes a substantially rectangular base portion 35 whose upper end is suspended so as to be pivotable (swingable) by the hinge pin 34, and the base portion 35. A lower inclined piece 36 for unlocking that is bent downwardly from the lower end toward the inner side of the storage frame 2, and a latch that is drilled from the upper part of the base part 35 to the upper part of the lower inclined piece 36. Hole 32. The length of the locking hole 32 is set by the mounting position of the locking protrusion 33.

  Since the latch fitting 31 configured as described above has the lower inclined piece 36 bent from the lower end of the base portion 35 toward the inner side of the storage frame 2, the center of gravity is located outside, that is, on the latch projection 33 side. In the closed state of the upper lid 3, the locking hole 32 is always engaged with the locking projection 33. Therefore, the engagement between the locking fitting 31 and the locking projection 33 is not easily released due to vibration or the like. Further, when the upper lid 3 is opened from the closed state, the locking fitting 31 is also moved upward with the opening of the upper lid 3, and the lower end edge of the locking hole 32 is engaged with the locking projection 33 to open the upper lid 3. Can be prevented (locked). When the upper lid 3 is opened during evacuation, the upper lid 3 is moved in a state where the engagement fitting 31 in the locked state or the state before the lock is moved inward to release the engagement with the engagement projection 33. Can be released. The lock mechanism 30 is automatically unlocked when the upper lid opening mechanism 20 described later is operated.

  As shown in FIGS. 2 and 3, the upper lid opening mechanism 20 has a substantially middle portion pivoted by a first pivot pin 21 a to a side wall member 2 c constituting the storage frame 2, so that the upper lid 3 and the lower lid 4 An open arm 22 having an operation end portion 27 exposed below the lower lid 4 on the pivot attachment portion side, and a base end portion pivotally attached to a side wall member 2c of the storage frame 2 by a second pivot attachment pin 21b. One end is pivotally connected to the other end of the open arm 22 by a working arm 23 whose portion engages with the lower surface of the upper lid 3 so as to be movable in contact with the lower surface, and a fourth pivot pin 21d. The other end portion is constituted by an intermediate arm 25 that is pivotably mounted in a long hole 24 for unlocking provided in a substantially intermediate portion of the action arm 23 so as to slide and rotate. It is desirable that the second pivot pin 21 b in the upper lid opening mechanism 20 is also used as the first pivot pin 11 a that pivots the intermediate link 12 of the opening / closing interlock mechanism 10. In this way, by using the second pivot pin 21b of the upper lid opening mechanism 20 and the first pivot pin 11a of the opening / closing interlock mechanism 10 in combination, the number of constituent members can be reduced.

  In this case, the open arm 22 is formed by a channel member having a substantially U-shaped cross section, and an upper piece 22a and a lower piece 22b at one end are cut out, and a pulling that constitutes the operation end 27 at the cutout 26a. The hand member 27a is pivotally mounted so as to be rotatable in the vertical direction by, for example, a rivet 27b. The pulling member 27a is rotated and positioned on the upper side of the release arm 22 during packaging at the time of shipment (see the two-dot chain line in FIG. 3A). It hangs down and protrudes below the lower lid 4.

  The upper arm 22a is notched at the other end of the open arm 22, and one end of the intermediate arm 25 is pivoted to the notch 26b by a third pivot pin 21c. An unlocking piece 28 orthogonal to the longitudinal direction of the opening arm 22 is provided at the tip of the other end of the opening arm 22. When the unlocking piece 28 moves upward along with the rotation of the release arm 22, the lock releasing piece 28 comes into contact with the lower inclined piece 36 of the locking fitting 31 to move the locking fitting 31 from the engagement position of the locking projection 33. It is configured to move in the release direction. That is, by positioning the lower inclined piece 36 of the locking metal 31 on the rotation locus of the unlocking piece 28 provided at the tip of the other end of the release arm 22, the release arm 22 can be reliably rotated. The unlocking piece 28 can come into contact with the lower inclined piece 36 of the locking fitting 31.

  Further, a synthetic resin wheel 29 such as ABS, which is pivotable in the vertical direction by a pivot 29a, is pivotally attached to the free end of the action arm 23. The wheel 29 is in contact with the lower surface of the upper lid 3 in a rollable manner, and the action arm 23 rotates clockwise in FIGS. 2 and 3 and moves upward in accordance with the opening operation of the opening arm 22. At this time, the wheel 29 comes into contact with the lower surface of the upper lid 3 in a rollable manner, so that the contact friction between the action arm 23 and the upper lid 3 can be reduced.

  Next, the operation when the upper lid 3 is opened from the downstairs will be described with reference to FIGS. 6A to 6D.

  In the closed state shown in FIG. 6A, when the pulling member 27a of the operating end 27 is pulled downward, as shown in FIG. 6B, the release arm 22 rotates clockwise around the first pivot pin 21a as a fulcrum. To do. As the release arm 22 rotates, the intermediate arm 25 also moves upward in the clockwise direction. However, since the elongated hole 24 provided in the intermediate arm 25 and the fourth pivot pin 21d slide, 23 does not rotate, and the unlocking piece 28 provided on the release arm 22 comes into contact with the lower inclined piece 36 of the locking fitting 31, and the locking hole 32 of the locking fitting 31 and the locking projection 33 are engaged. Is released.

  Further, when the pulling member 27a is pulled downward, the release arm 22 is further rotated clockwise, and the intermediate arm 25 is also moved clockwise in accordance with this, and the action arm 23 is rotated clockwise, As the action arm 23 pivots, the wheel 29 at the free end of the action arm 23 comes into contact with the upper cover 3 so as to roll from the free end side to the base end side, thereby opening the upper cover 3. (See FIG. 6C). When the upper lid 3 is opened, as described above, the opening / closing interlocking mechanism 10 is operated to open the lower lid 4 (see FIG. 6D).

  As described above, after the upper lid 3 and the lower lid 4 are opened, the ladder 6 can be extended to evacuate or rescue from the lower level to the upper level.

  Note that when the ladder 6 is stored after use or in the storage frame 2, when the opened upper lid 3 is closed, the open arm 22 is always in a state before being opened. 31 is always stored after the opening arm 22 and is not stored prior to the unlocking piece 28 provided at the tip of the other end of the opening arm 22, and the latch 31 is not released during the opening operation. Thus, the state where the upper lid 3 is not opened does not occur.

It is a perspective view which shows the use condition of the evacuation apparatus which concerns on this invention. It is a schematic sectional drawing which shows the state which open | releases the upper cover and lower cover in this invention. It is a schematic sectional drawing (a) which shows the state which obstruct | occluded the upper cover and the lower cover, and the I section expanded sectional view (b) of (a). It is an expanded sectional view which follows the II-II line of FIG. It is the III arrow directional view of FIG.3 (b). It is a schematic sectional drawing which shows the obstruction | occlusion state of an upper cover and a lower cover. It is a schematic sectional drawing which shows the state of the rotation start of the open arm in this invention. It is a schematic sectional drawing which shows the state by which an upper cover is open | released with rotation of the said open arm. It is a schematic sectional drawing which shows the state which a lower cover opens in response to opening of an upper cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slab 1a Opening part 2 Storage frame 3 Upper cover 4 Lower cover 6 Ladder 10 Opening / closing interlock mechanism 20 Upper cover opening mechanism 22 Opening arm 23 Action arm 25 Intermediate arm 27 Operation end 27a Pulling member 29 Wheel

Claims (2)

A storage frame that is fitted and fixed in an opening provided in a slab such as a floor or a veranda, an upper lid and a lower lid that are pivotally attached to the floor surface side and the ceiling surface side of the storage frame, and these upper lids An open / close interlock mechanism that opens and closes the lid and the lower lid in conjunction with each other, and a ladder that is folded and stored in the storage frame and that extends to or near the floor below when the upper and lower lids are opened. In an evacuation device comprising:
A substantially intermediate part is pivotally attached to the storage frame, an open arm having an operation end on the pivot part side of the upper lid and the lower lid, a base end part pivotally attached to the storage frame, and a free end part being the upper lid And an intermediate arm whose one end is pivotally attached to the other end of the open arm and the other end is pivotally attached to a substantially middle portion of the action arm. An evacuation device comprising an upper lid opening mechanism. The evacuation device according to claim 1,
An evacuation device characterized in that a synthetic resin wheel that pivotably contacts the lower surface of the upper lid is pivotally attached to the free end of the action arm.

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