JP2006082884A - Smoke blocking structure for elevator doorway - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the sliding range of a smoke blocking material for sealing a clearance between the upper and lower edge parts of an elevator doorway and a door. <P>SOLUTION: Rails 4a and 4b for guiding a suspending part 2 of the doors 1a and 1b of the elevator doorway are fixed in the condition wherein the rails are tilted so that a side thereof for opening the doors 1a and 1b becomes higher. Opening direction of each of the doors 1a and 1b is formed obliquely upward and closing direction thereof is formed obliquely downward, and when the doors 1a and 1b are opened, a presser plate 12 fitted to an upper part of each of the doors 1a and 1b is separated from an upper smoke blocking material 11 fitted to an upper frame 3a forming an upper edge of the doorway and a lower part smoke blocking material fitted to a lower end of the doors 1a and 1b is separated from a doorsill forming a lower edge of the doorway by an upward movement component. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a smoke shielding structure that blocks smoke generated at the time of a building fire at an elevator doorway.

  Buildings such as buildings and condominiums have recently been obliged to install smoke-shielding facilities in the elevator hoistway sections, so emergency smoke-proof doors have been installed in front of the elevator doors. Many of them have been installed, and elevator doorways have smoke shielding structures. Among these, the smoke-proof structure of the elevator entrance / exit is generally a smoke-shielding material in which a gap generated between the door and the entrance / exit peripheral edge is attached to either the door / exit / exit periphery when the door of the entrance / exit is closed. It is supposed to be closed with.

  If the smoke-proof structure of the elevator entrance / exit as described above is adopted, the installation cost is reduced and the appearance is improved as compared with the case where an emergency smoke-proof door is provided in front of the entrance / exit. However, since the smoke shielding material and the door or the entrance / exit peripheral portion are always in contact with each other and slide as the door is opened and closed, the smoke shielding material is easily worn and frequent maintenance is required. In addition, the power for opening and closing the door increases compared to the case without the smoke shielding structure, and sliding noise at the time of opening and closing the door may be a problem.

On the other hand, with regard to the smoke shielding structure on the entrance / exit side edge, conventionally, the smoke shielding material is attached to the opening direction side end of the door so as to protrude toward the entrance / exit side, and the side edge of the entrance / exit only when the door is closed. The sliding range of the smoke shielding material is reduced so as to be in contact with the vertical frame that forms the frame. In addition, with regard to the smoke shielding structure at the upper edge of the doorway, for example, a smoke shielding material is formed at the upper end of the door, and a cover plate is inclined at the upper frame forming the upper edge of the doorway so as to be higher on the door closing direction side. A method of reducing the sliding range of the smoke shielding material by causing the smoke shielding material to contact the contact plate only when the door is in the vicinity of the fully closed position has been proposed (see Patent Document 1). However, there has been no effective method for reducing the sliding range of the smoke shielding material that closes the gap between the sill that forms the lower edge of the doorway and the door.
JP 2004-26316 A

  The subject of this invention is reducing the sliding range of the smoke shielding material which block | closes the clearance gap between the up-and-down edge part of an elevator doorway, and a door.

  In order to solve the above-described problems, the present invention is attached to one of the upper frame and the upper end of the door that forms the upper edge of the doorway when the door sliding along the doorway of the elevator fully closes the doorway. An upper smoke shield is in contact with the other of the upper frame and the upper end of the door, and a lower smoke shield attached to one of the sill and the lower end of the door is formed between the sill and the other of the lower end of the door. In the smoke-proof structure of the elevator doorway that contacts and closes the gap between the door and the upper frame and the sill, the door is provided with means for making the opening direction obliquely upward and the closing direction obliquely downward, When the door is opened, the contact state with the upper frame or door upper end of the upper smoke shield and the contact with the lower smoke barrier sill or door lower end are released.

  That is, by providing means for opening the door of the elevator doorway diagonally upward and closing the door diagonally downward, the upper smoke barrier and the lower smoke barrier are both fully open and closed when the door is open to some extent. The sliding member is not moved away from the mating member that contacts when closed.

  In the above configuration, when the door is guided and slid by a rail fixed above the entrance / exit, the rail is used as means for making the door open direction diagonally upward and the door closed direction diagonally downward. A door that is inclined so that the opening direction side of the door is high can be employed.

  As the lower smoke-shielding material, an elastic body that is formed in a tongue shape and attached to the lower end of the door and that contacts the upper surface of the sill when the door fully closes the doorway can be adopted.

  Further, when the sill has a guide groove on its upper surface, the lower smoke shielding material is attached to the lower end of the door and inserted into the guide groove, and the thickness at the insertion end side is reduced, and the door is If the lower smoke shielding material comes into contact with the side wall of the guide groove when the doorway is fully closed and the door opens, the lower smoke shielding material moves away from the side wall of the guide groove. Since the material also serves as a guide shoe that guides the material into the guide groove, a conventional guide shoe is not required, and the structure of the lower end portion of the door can be simplified.

  At this time, it is preferable that at least a part of the lower smoke shielding material is formed of an elastic body in order to reduce sliding noise with the guide groove. In order to suppress the progress of wear due to sliding, it is desirable to cover the surface facing the side wall of the guide groove with a sliding member.

  In the present invention, as described above, when the door of the elevator is slid obliquely and the door is opened to a certain extent, the upper and lower smoke shields do not perform the sliding operation. The frequency of maintenance can be reduced by suppressing the progress of the maintenance. Moreover, the power for opening and closing the door can be suppressed to the same level as when no smoke shielding material is attached, and the sliding sound at the time of opening and closing the door can be almost eliminated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7 show a first embodiment. In this embodiment, as shown in FIGS. 1 to 3, a pair of left and right doors 1 a and 1 b arranged at the entrance / exit of the elevator are rails 4 a fixed to a header 3 above the entrance / exit by a suspension 2 at the upper end thereof, 4b, the suspension 2 is guided by the rails 4a and 4b, and the lower end is guided by the sill 5 that forms the lower edge of the entrance, and slides in the opposite direction along the entrance and exit. Open and close.

  As shown in FIGS. 4 (a) and 4 (b), the rails 4a and 4b are fixed to the header 3 in an inclined state so that the doors 1a and 1b are opened upward. The suspended portions 2 of the doors 1a and 1b are connected to the upper ends of the doors 1a and 1b at two locations at the lower ends thereof, and on the side facing the header 3, the upper surfaces of the rails 4a and 4b are connected. Two wheels 6 are provided. That is, each door 1a, 1b slides diagonally upward when opening, and diagonally downward when closing, as the wheels 6 of the suspension 2 roll on the rails 4a, 4b. .

  It should be noted that the suspension door 2 of the left door 1a has both ends connected to the bracket 7 fixed to the rails 4a and 4b on the surface opposite to the surface facing the header 3 and connected by a wire 8. A spring 9 that gives a self-closing function to 1a and 1b, and a lock mechanism 10 that engages with a hook 7a attached to the bracket 7 to maintain the fully closed state of the entrance and exit are provided.

  Next, the details of the smoke shielding structure applied to the elevator door that is opened and closed by the doors 1a and 1b will be described. First, as shown in FIG. 4A, the smoke shielding structure at the upper edge of the entrance / exit is an upper smoke shield having a protrusion on the upper surface, which is fixed to the lower end of the header 3 to form the upper edge of the entrance / exit. A material 11 is attached, and a presser plate 12 having an L-shaped cross section is attached to the upper end of each door 1a, 1b. When the doorway is in a fully closed state, the presser plate 12 pushes the protrusion of the upper smoke shield 11 from above. The gap is closed by pressing.

  Further, as shown in FIGS. 2, 5, and 6, the smoke shielding structure at the entrance / exit side edge portion is provided with a side smoke shielding material 13 at its opening direction side end portion of each door 1a, 1b. The side smoke-shielding material 13 is in contact with a vertical frame (not shown) that forms the side edge of the entrance / exit at the tongue-shaped portion 13a when the entrance / exit is fully closed. The gap between 1a and 1b is closed. In addition, at the center side edge part of each door 1a, 1b, the abutting rubber 14 which is mutually abutted when the doorway is fully closed and also functions as a smoke shielding material between the doors 1a, 1b is attached.

  And as shown in FIG.6 and FIG.7 (a), as a smoke-insulating structure of an entrance / exit lower edge part, it extends along the sliding direction to the lower end surface of each door 1a, 1b, and thickness is thin toward the lower end side. By attaching the lower smoke shielding material 15 formed as described above, inserting the lower smoke shielding material 15 into the guide groove 16 having a rectangular cross section provided in the sill 5 and bringing it into contact with the side wall of the guide groove 16 when the doorway is fully closed, The gap between the threshold 5 and each door 1a, 1b is closed. By doing in this way, since the lower smoke shielding material 15 also serves as a guide shoe guided by the guide groove 16, it is not necessary to separately provide a guide shoe as in the prior art, and the structure of the lower end portions of the doors 1a and 1b is eliminated. It is simple and easy to maintain. In addition, the cross-sectional shape of the guide groove 16 of the sill 5 does not necessarily have to be a rectangle, and for example, it may be formed so that the groove width becomes narrower toward the groove bottom side.

  The upper smoke-shielding material 11 and the side smoke-shielding material 13 are each formed of an elastic body such as rubber having appropriate elasticity, and are in close contact with each other when contacted with a contact partner member. On the other hand, as shown in FIG. 7 (a), the lower smoke shielding material 15 secures both the adhesion with the guide groove 16 when the doorway is fully closed and the performance as a guide shoe. Is sandwiched between anti-vibration rubber 15b as an elastic body, and the surface of the anti-vibration rubber 15b facing the side wall of the guide groove 16 is covered with a synthetic resin 15c as a sliding member.

  As described above, in the smoke shielding structure, when the doors 1a and 1b are closed, the upper, side and lower smoke shielding materials 11, 13, and 15 block the gap between the entrance / exit peripheral edge portion and the doors 1a and 1b. Is. When the doors 1a and 1b are opened, the doors 1a and 1b slide obliquely upward, so that the side smoke barrier 13 moves away from the vertical frame (not shown) and moves upward in the doors 1a and 1b. 4 (b), the presser plate 12 moves away from the upper smoke shield 11, and the lower smoke shield 15 becomes a guide for the sill 5 as shown in FIG. 7 (b). While being partially inserted into the groove 16, it moves away from the side wall of the guide groove 16 while maintaining the function as a guide shoe. That is, the upper and lower smoke shielding materials 11 and 15 slide with the contact member when the doors 1a and 1b are in the vicinity of the fully closed position, but do not slide when the doors 1a and 1b are opened to some extent.

  Therefore, in this smoke shielding structure, the upper and lower smoke shielding materials 11 and 15 have a sliding range greatly reduced compared to the conventional one and are not easily worn. Here, there is a possibility that the sliding range of the lower smoke shielding material 15 may be slightly larger than that of the upper smoke shielding material 11 due to its thickness, the dimensional error of the guide groove 16 width, etc., but the surface facing the side wall of the guide groove 16 is Since it is covered with the slidable synthetic resin 15c, the amount of wear can be kept small. For this reason, the frequency of maintenance can be reduced and the maintenance cost can be reduced.

  Further, the power for opening and closing the doors 1a and 1b can be suppressed to the same level as when no smoke shielding material is attached, and the sliding sound generated when the doors 1a and 1b are opened and closed can be greatly reduced as compared with the conventional case. . In particular, for the lower smoke shielding material 15, the vibration-proof rubber 15 b absorbs vibration when sliding with the guide groove 16, so that the sound is small even when sliding noise is generated.

  8 to 10 show a second embodiment. In this embodiment, as shown in FIGS. 8 and 9, two doors 1a and 1b arranged at the front and rear slide in the same direction to open and close the doorway. Since the configuration is the same as that of the first embodiment, differences from the first embodiment will be mainly described below.

  The rails 4a and 4b for guiding the suspension 2 of the doors 1a and 1b sandwich the suspension 2 of the door 1a on the front side so that the left side of the drawing is higher, that is, the same as in the first embodiment. The doors 1a and 1b are fixed in an inclined state so that the opening direction side becomes higher. Moreover, the spring 9 which gives a self-closing function to both doors 1a and 1b, and the lock mechanism 10 for maintaining the fully closed state of the entrance / exit are provided in the hanging part 2 of the door 1b on the rear surface side.

  As shown in FIGS. 9 and 10, the smoke shielding structure at the upper edge of the entrance / exit is formed by forming an upper frame 3a fixed to the lower end of the header 3 so that the overhang width on the right side from the center of the entrance / exit is wider. The upper smoke shielding material 18 is attached to the upper surface of 3a and the vertical frame 17 of the right side along the edge facing each door 1a, 1b. Thereby, when the doorway is in a fully closed state, the L-shaped holding plate 12 attached to the front side of each door 1a, 1b, and the substantially U-shaped holding plate 19 attached to the end in the closing direction. And presses the upper smoke shield 18 from above to close the gaps between the doors 1a and 1b and the upper frame 3a.

  Also, as shown in FIGS. 8 and 10, the smoke shielding structure at the right edge of the doorway is formed in a rectangular cross section at the end in the closing direction of the rear door 1b, and the right vertical A side smoke shielding material 20 in contact with the frame 17 is attached. About the left side edge part of the entrance / exit, the same smoke shielding structure as 1st Embodiment is taken. In addition, it is formed in the opening direction side edge part of the rear side door 1b in the same shape as the side part smoke-shielding material 13 of 1st Embodiment, and the closing direction of the front side door 1a by the tongue-like part 21a at the time of a doorway fully closed A contact rubber 21 that is in contact with the side end portion and serves as a smoke shielding material between the doors 1a and 1b is attached.

  And although illustration is abbreviate | omitted about the smoke-shielding structure of an entrance / exit lower edge part, the lower smoke-shielding material attached to the lower end surface of each door 1a, 1b was provided in the sill 5 similarly to 1st Embodiment. The gaps between the doors 1a and 1b and the sill 5 are closed by being inserted into the guide grooves in the row, respectively.

  Also in this smoke shielding structure, as in the first embodiment, the smoke shielding material is separated from the contact partner member by opening the door obliquely upward, so that the wear of each smoke shielding material does not easily progress. Maintenance frequency is low. Further, the increase in door opening / closing power due to the installation of the smoke shielding material and the sliding noise when the door is opened / closed are not a problem.

  In each of the above-described embodiments, the upper smoke shield is attached to the inlet / outlet peripheral side, and the side and lower smoke shields are attached to the door. However, the upper smoke shield may be attached to the door, or the side shield. You may make it attach a smoke material and a lower smoke-shielding material to the entrance-and-exit peripheral part side.

  In addition, the smoke shielding structure at the lower edge of the entrance / exit is such that the lower smoke shielding material also plays the role of a guide shoe. However, as shown in FIGS. When the door 1a, 1b is opened to a certain extent, it is formed in a tongue shape with rubber as an elastic body separately from the guide shoe 23 inserted into the guide groove 16 of 5 You may make it leave | separate from the threshold 5.

The front view which looked at the elevator entrance which applied the smoke-shielding structure of 1st Embodiment from the hoistway side (state which closed the door) The main part enlarged front view of FIG. Fig. 1 is an enlarged front view of a main part in a state where the door of Fig. 1 is opened. a is a cross-sectional view taken along line AA in FIG. 2, and b is a cross-sectional view taken along line BB in FIG. 1 is a perspective view from above of the door of FIG. 1 is a perspective view from below of the door of FIG. a is a sectional view taken along the line CC in FIG. 1, and b is a sectional view taken along the line DD in FIG. Front view corresponding to FIG. 1 of the second embodiment (with the door closed) Sectional view along line IX-IX in FIG. FIG. 8 is a perspective view from above of the state excluding the upper frame body and the door suspension. a is a sectional view showing a modified example of the smoke shielding structure at the lower edge of the doorway, and b is a sectional view in a state where the door of a is opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Door 2 Suspended lower part 3 Header 3a Upper frame 4a, 4b Rail 5 Sill 6 Wheel 11 Upper smoke-shielding material 12 Holding plate 13 Side smoke-shielding material 14 Cover rubber 15 Lower smoke-shielding material 15a Core material 15b Anti-vibration rubber 15c Synthetic resin 16 Guide groove 17 Vertical frame 18 Upper smoke shielding material 19 Presser plate 20 Side smoke shielding material 21 Bump rubber 22 Lower smoke shielding material 23 Guide shoe

Claims (5)

  When the door that slides along the entrance of the elevator fully closes the entrance, the upper smoke shielding material attached to one of the upper frame and the upper end of the door forms the upper edge of the entrance and the upper end of the door. A lower smoke barrier attached to one of the sill that forms the lower edge of the doorway and the lower end of the door is in contact with the other, the other of the sill and the lower end of the door, and the door, the upper frame, and the sill In the smoke shielding structure of the elevator entrance / exit so as to close the gap, the upper frame of the upper smoke shielding material is provided when the door is opened by providing means for making the door opening direction obliquely upward and the closing direction obliquely downward Alternatively, a smoke shielding structure for an elevator entrance / exit, wherein the contact state with the upper end portion of the door and the sill of the lower smoke shielding material or the contact state with the lower end portion of the door are released.   The door is guided and slid by a rail fixed above the doorway, and the means for opening the door diagonally upward and the closing direction diagonally downward is arranged so that the rail is raised on the door opening direction side. The smoke-insulating structure for an elevator entrance / exit according to claim 1, wherein the smoke-proofing structure is inclined.   The lower smoke shielding material is formed in a tongue shape with an elastic body and is attached to the lower end portion of the door, and the door is in contact with the upper surface of the sill when the doorway is fully closed. Item 3. An elevator entrance / exit smoke shielding structure according to item 1 or 2.   The sill has a guide groove on the upper surface thereof, the lower smoke shielding material is attached to the lower end portion of the door and inserted into the guide groove, the thickness at the insertion end side is reduced, and the door completely opens and closes the doorway. 2. The lower smoke barrier material comes into contact with a side wall of the guide groove when closed, and the lower smoke barrier material moves away from the side wall of the guide groove as the door is opened. Or the smoke-insulating structure of the elevator doorway of 2.   5. The smoke-proof structure for an elevator entrance / exit according to claim 4, wherein at least a part of the lower smoke-shielding material is formed of an elastic body, and a surface facing the side wall of the guide groove is covered with a sliding member.

Images