Elevator landing door device

Abstract

To provide an elevator landing door device capable of improving smoke insulation performance of the overlapping part of a first door and a second door when a landing door is closed.SOLUTION: An elevator landing door device comprises a landing door with a first door and a second door. The first door comprises a first smoke insulation mechanism in the overlapping part with the second door when the landing door is closed, and the second door comprises a second smoke insulation mechanism in the overlapping part with the first door when the landing door is closed. The first smoke insulation mechanism has a first smoke insulating material, and the second smoke insulation mechanism has a pressed part against which the first smoke insulating material is pressed when the landing door is closed. The pressed part is constituted by a bent portion formed by bending a part of the door panel of the second door into a U-shape in plan view.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to an elevator hall door device. [Background technology]

[0002] In a building with an elevator, a landing door device is installed on each floor of the building. The landing door device has an openable / closable landing door, and the landing door opens and closes the elevator entrance / exit provided on each floor of the building. The landing door device has a smoke blocking mechanism. The smoke blocking mechanism is a mechanism for blocking the flow of smoke between the elevator landing and the elevator shaft. For example, the technology described in Patent Document 1 is known as a landing door device equipped with a smoke blocking mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-179028 A Summary of the Invention [Problem to be solved by the invention]

[0004] Elevator landing door devices are broadly classified into single-leaf and double-leaf types depending on the opening and closing method of the landing door. A single-leaf landing door device is equipped with a landing door having a first door and a second door. The first door and the second door are arranged so that they partially overlap when the landing door is completely closed. In a conventional single-leaf landing door device, a smoke blocking mechanism is provided in the part where the first door and the second door overlap when the landing door is closed, but the smoke blocking performance of the smoke blocking mechanism was not necessarily sufficient.

[0005] An object of the present invention is to provide an elevator hall door device that can improve the smoke blocking performance of the area where the first door and the second door overlap when the hall doors are closed. [Means for solving the problem]

[0006] In order to solve the above problems, for example, the configurations described in the claims are adopted. The present application includes multiple means for solving the above-mentioned problems, and one example is a landing door device for an elevator equipped with a landing door having a first door and a second door, wherein the first door is equipped with a first smoke blocking mechanism at a portion that overlaps with the second door when the landing door is closed, and the second door is equipped with a second smoke blocking mechanism at a portion that overlaps with the first door when the landing door is closed, the first smoke blocking mechanism has a first smoke blocking material, and the second smoke blocking mechanism has a pressed portion against which the first smoke blocking material is pressed when the landing door is closed, and the pressed portion is constituted by a folded portion formed by folding a part of the door panel of the second door into a U-shape when viewed from above. Effect of the Invention

[0007] According to the present invention, it is possible to improve the smoke blocking performance of the portion where the first door and the second door overlap when the hall door is closed. Problems, configurations and effects other than those described above will become apparent from the following description of the embodiments. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a view of an elevator hall door device as seen from the hall side. [Diagram 2] FIG. 2 is a view of a hall door device according to a comparative embodiment, as viewed from a direction A in FIG. [Diagram 3] FIG. 3A is a diagram showing the second door in a hall door device of a comparative embodiment, as viewed from the elevator shaft side, and FIG. 3B is a diagram showing a smoke-blocking material mounting member and a backing plate attached to the second door in a hall door device of a comparative embodiment. [Figure 4] 3 is a view of a lower part of a second door in a hall door device according to a comparative embodiment, seen from a direction B in FIG. 2. [Diagram 5] FIG. 11 is a perspective view of a hall door device according to a comparative embodiment, as viewed from the elevator shaft side. [Figure 6] FIG. 11 is a perspective view of the arrangement of a first smoke blocking mechanism and a blocking mechanism in a first door, as viewed from the elevator shaft side, in a hall door device according to a comparative embodiment. [Figure 7] 13 is a diagram showing an arrangement state of a blocking mechanism at an upper portion of a hall door in a hall door device according to a comparative embodiment; FIG. [Figure 8] 2 is a view of the hall door device according to the embodiment as viewed from a direction A in FIG. 1. [Figure 9] 9 is a view of the lower part of the second door in the landing door device according to the embodiment, seen from a direction C in FIG. 8. [Figure 10] 2 is a diagram showing an arrangement of a blocking mechanism and a door panel in the hall door device according to the embodiment, as viewed from a direction A in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this specification and the drawings, elements having substantially the same functions or configurations are given the same reference numerals, and duplicated descriptions are omitted as appropriate. In addition, the following description and drawings are examples for explaining the present invention, and may be omitted or simplified for the convenience of explanation. Each component may be singular or plural, unless otherwise specified.

[0010] <Configuration of landing door device> FIG. 1 is a view of an elevator hall door device as seen from the hall side. As shown in FIG. 1, the landing door device 10 includes a single-wing landing door 13 having two doors 11 and 12. In this embodiment, the door 11 corresponds to the first door, and the door 12 corresponds to the second door. For this reason, in the following description, the door 11 will be referred to as the first door 11, and the door 12 will be referred to as the second door 12. The first door 11 and the second door 12 are arranged to be shifted in position in the depth direction when viewed from the landing side of the elevator. In this embodiment, the first door 11 is arranged closer to the elevator shaft than the second door 12, and the second door 12 is arranged closer to the landing side than the first door 11.

[0011] The landing door device 10 also includes a three-sided frame 14 that surrounds three sides of the elevator entrance. The three-sided frame 14 has a pair of vertical frames 15, 16 and an upper frame 17. The pair of vertical frames 15, 16 are arranged in a pair on the left and right sides of the elevator entrance. Each of the vertical frames 15, 16 is arranged vertically (plumb). The upper frame 17 is arranged horizontally, spanning between the upper ends of the pair of vertical frames 15, 16. The landing door 13 opens and closes to open and close the elevator entrance. The opening and closing of the landing door 13 is performed by the movement of the first door 11 and the second door 12.

[0012] The landing door device 10 also includes thresholds 18 and 19 that guide the movement of the landing door 13. The thresholds 18 and 19 are horizontally disposed at the bottom of the elevator entrance. The threshold 18 guides the movement of the first door 11. The threshold 19 guides the movement of the second door 12. The thresholds 18 and 19 are disposed at different positions in the depth direction as viewed from the elevator landing side, similar to the first door 11 and the second door 12 described above. A door shoe 21 is disposed at the lower end of the first door 11. The door shoe 21 is provided so as to be movable along a guide groove (not shown) formed in the threshold 18. A door shoe 22 is disposed at the lower end of the second door 12. The door shoe 22 is provided so as to be movable along a guide groove (not shown) formed in the threshold 19.

[0013] Fig. 1 shows a state in which the landing door 13 is closed (fully closed state). In this manner, when the landing door 13 is closed, the first door 11 and the second door 12 are arranged so as to overlap with each other at part P in the left-right direction of Fig. 1. The first door 11 and the second door 12 are also arranged so as to overlap with each other from the upper end to the lower end of the landing door 13 at part P in the figure.

[0014] The first door 11 is provided with a first smoke blocking mechanism (described later) at a portion P where the first door 11 overlaps with the second door 12 when the landing door 13 is closed. The second door 12 is provided with a second smoke blocking mechanism (described later) at a portion P where the second door 12 overlaps with the second door 12 when the landing door 13 is closed. The first smoke blocking mechanism and the second smoke blocking mechanism are mechanisms for blocking the flow of smoke between the elevator landing and the hoistway.

[0015] The landing door 13 opens and closes the elevator entrance by the movement of the first door 11 and the second door 12. When opening and closing the elevator entrance, the first door 11 and the second door 12 move in the same direction at different speeds. To give a specific example, when the landing door 13 is opened from the closed state shown in FIG. 1, both the first door 11 and the second door 12 move to the left in FIG. 1. At this time, the first door 11 moves at a faster speed than the second door 12. Also, the first door 11 moves a longer distance than the second door 12. As a result, when the landing door 13 is in the open state (fully closed state), both the first door 11 and the second door 12 are stored (retracted) and positioned to the left of the inner surface 15a of the vertical frame 15 in FIG. 1.

[0016] In addition, which of the two doors 11, 12 that the landing door 13 has corresponds to the first door and which corresponds to the second door may vary depending on the specifications of the landing door 13, such as the positional relationship of the doors 11, 12 in the depth direction of Figure 1 and the opening and closing direction of the landing door 13.

[0017] Next, the configuration of the landing door device according to the comparative embodiment and the configuration of the landing door device according to the embodiment will be described in order.

[0018] <Comparative form> FIG. 2 is a view of a hall door device according to a comparative embodiment, seen from the direction A in FIG. As shown in Fig. 2, the first door 11 is disposed on the elevator shaft side R, and the second door 12 is disposed on the landing side F. The first door 11 is equipped with a first smoke blocking mechanism 101 at a portion P (see Fig. 1) where it overlaps with the second door 12. The second door 12 is equipped with a second smoke blocking mechanism 102 at a portion P where it overlaps with the first door 11. The first smoke blocking mechanism 101 is disposed on the door pocket side of the first door 11, and the second smoke blocking mechanism 102 is disposed on the door stop side of the second door 12.

[0019] The first smoke blocking mechanism 101 includes two brackets 103, 104 and two smoke blocking materials 105, 106. Each of the brackets 103, 104 is formed in an L-shape when viewed from above. Each of the smoke blocking materials 105, 106 is formed in an L-shape when viewed from above. Each of the brackets 103, 104 is made of metal or the like. Each of the smoke blocking materials 105, 106 is made of an elastic body such as rubber.

[0020] The bracket 103 is attached to the side end 11a of the first door 11 via a smoke blocking material 105. The bracket 104 and the smoke blocking material 106 are attached to the bracket 103 via the smoke blocking material 105. In this manner, by combining the members (103, 104, 105, 106) that are L-shaped in plan view, the first smoke blocking mechanism 101 is formed into a Z-shape in plan view. Each of the members (103, 104, 105, 106) that constitute the first smoke blocking mechanism 101 is formed into a vertically elongated shape having a length substantially equal to the range indicated by the symbols P1 and P3 in FIG.

[0021] The second smoke blocking mechanism 102 includes a smoke blocking material 115, a smoke blocking material mounting member 116, and a backing plate 117. The smoke blocking material 115 is mounted on the door panel 112 of the second door 12. The smoke blocking material mounting member 116 is a member for mounting the smoke blocking material 115 to the door panel 112. The backing plate 117 is mounted on the smoke blocking material 115. The smoke blocking material 115 and the smoke blocking material mounting member 116 are both formed in a U-shape in a plan view. The backing plate 117 is formed in an L-shape in a plan view. In this specification, "plan view" refers to a case where an object is viewed from directly above. In addition, in this specification, the "U-shape" representing the shape of an object is the same shape as the "U-shape" expressed using the Japanese katakana character "ko".

[0022] The smoke blocking material 115 is made of an elastic body such as rubber, and the smoke blocking material mounting member 116 and the backing plate 117 are made of metal or the like. A part of the door panel 112 is formed in a folded state in an L-shape in a plan view, thereby forming a folded portion 118 that is L-shaped in a plan view in a part of the door panel 112. The smoke blocking material 115 is mounted on the inside of the folded portion 118 of the door panel 112 using the smoke blocking material mounting member 116. The folded portion 118 is formed vertically long with a length equal to the height dimension of the second door 12.

[0023] The backing plate 117 is attached to the smoke blocking material 115 at a position different from the bent portion 118 of the door panel 112. The backing plate 117 is fixed to the smoke blocking material mounting member 116 via the smoke blocking material 115 by screwing or the like. Each member (115, 116, 117) constituting the second smoke blocking mechanism 102 is formed in a vertically long shape having a length substantially equal to the range indicated by the symbols P1 and P3 in FIG. 1 (see FIG. 3A). As shown in FIG. 3B, the upper end of the backing plate 117 is cut out in a predetermined shape, and the lower end of the backing plate 117 is also cut out in a predetermined shape. FIG. 3A is a view of the second door 12 in the landing door device according to the comparative embodiment, as viewed from the elevator shaft side R. FIG. 3B is a view of the smoke blocking material mounting member 116 and the backing plate 117 attached to the second door 12 in the landing door device according to the comparative embodiment.

[0024] FIG. 4 is a view of the lower part of the second door 12 in a hall door device according to a comparative embodiment, seen from the direction B in FIG. As shown in Fig. 4, at the bottom of the second door 12, the lower end 115a of the smoke blocking material 115 is disposed so as to protrude downward further than the lower end of the smoke blocking material mounting member 116 and the lower end of the backing plate 117. The lower end 115a of the smoke blocking material 115 is disposed so as to contact the upper surface of the threshold 19 (see Fig. 1). By disposing the lower end 115a of the smoke blocking material 115 in this manner, the gap between the smoke blocking material 115 and the threshold 19 can be blocked to block the flow of smoke.

[0025] Further, a door shoe bracket 119 and a fixing bracket 120 are disposed at the bottom of the second door 12. The door shoe 22 is attached to the door shoe bracket 119. The door shoe bracket 119 is fixed to the fixing bracket 120. The fixing bracket 120 is fixed to the bent portion 118 of the door panel 112 by a rivet member 121. The smoke shielding material 115 and the smoke shielding material mounting member 116 are cut out in a predetermined shape at the bottom of the second door 12 to avoid interference with the rivet member 121.

[0026] Fig. 5 is a perspective view of a hall door device according to a comparative embodiment, seen from the elevator shaft side, in which some of the components constituting the hall door device are removed. As shown in FIG. 5, the first smoke blocking mechanism 101 is attached to the end of the first door 11 on the door pocket side by screwing or the like. A smoke blocking mechanism 101a having the same configuration as the first smoke blocking mechanism 101 is attached to the end of the second door 12 on the door pocket side by screwing or the like. The smoke blocking material 106 (see FIG. 2) of the first smoke blocking mechanism 101 is pressed against the contact plate 117 (see FIG. 2) of the second smoke blocking mechanism 102 from the upper part to the lower part of the landing door 13. As shown in FIG. 2, a part of the contact plate 117 forms a pressed part 122. When the landing door 13 is closed, the smoke blocking material 106 of the first smoke blocking mechanism 101 is pressed against the pressed part 122 of the contact plate 117, thereby blocking the flow of smoke at the part P where the first door 11 and the second door 12 overlap. However, the upper end of the first smoke blocking mechanism 101 is open. The upper end of the smoke blocking mechanism 101a is also open. Therefore, the first door 11 has a blocking mechanism 125 that blocks the upper end of the first smoke blocking mechanism 101, and the second door 12 has a blocking mechanism 125a that blocks the upper end of the smoke blocking mechanism 101a. The configuration of the blocking mechanism 125 and the configuration of the blocking mechanism 125a are basically the same. Therefore, in this specification, only the configuration of the blocking mechanism 125 will be described in detail.

[0027] The blocking mechanism 125 is disposed above the landing door 13. Fig. 6 is a perspective view of the arrangement of the first smoke blocking mechanism 101 and the blocking mechanism 125 in the first door 11, as viewed from the elevator shaft side, in a landing door device according to a comparative embodiment. Fig. 7 is a diagram showing the arrangement of the blocking mechanism 125 above the landing door 13, in a landing door device according to a comparative embodiment.

[0028] The blocking mechanism 125 is a mechanism that blocks a space formed between the first smoke blocking mechanism 101 and the second smoke blocking mechanism 102 at the upper end of the first smoke blocking mechanism 101. The blocking mechanism 125 includes a base bracket 126, a support bracket 128, and a smoke blocking material 129. The base bracket 126 and the support bracket 128 are made of metal or the like. The smoke blocking material 129 is made of an elastic body such as rubber.

[0029] The base bracket 126 is an L-shaped bracket. The base bracket 126 is fixed to the side end portion 11a of the first door 11. The base bracket 126 is provided with two mounting holes (not shown). The base bracket 126 is attached to the first door 11 using the two mounting holes with fastening members such as screws and bolts. The support bracket 128 is attached to the base bracket 126. The smoke blocking material 129 is attached to the support bracket 128. When the landing door 13 is closed as shown in FIG. 1, the smoke blocking material 129 is disposed in a state of facing and contacting the bent portion 118 of the second door 12 as shown in FIG. 7.

[0030] In the landing door device according to the comparative embodiment described above, a configuration is adopted in which the smoke blocking material 106 of the first smoke blocking mechanism 101 is pressed against the backing plate 117 of the second smoke blocking mechanism 102 in order to block the flow of smoke at the overlapping portion P of the first door 11 and the second door 12. In this configuration, it is necessary to ensure a gap G1 (see Figs. 2 and 4) between the bent portion 118 of the door panel 112 and the backing plate 117 of the second smoke blocking mechanism 102, taking into consideration dimensional tolerances of parts, installation errors, and the like. As shown in Fig. 4, the gap G1 is formed long in the height direction (vertical direction) of the second door 12.

[0031] In addition, when the above-mentioned configuration is adopted, as shown in FIG. 2, a step is likely to occur between the surface 118a of the bent portion 118 of the door panel 112 and the surface 117a of the backing plate 117, and this step causes a predetermined gap (not shown) between the backing plate 117 and the smoke blocking material 129. The predetermined gap is formed in a state where it is spatially connected to the gap G1. Therefore, for example, when smoke flows into the gap G1 from the lower part of the landing door 13, the smoke flows from the lower part to the upper part of the landing door 13 through the gap G1, and finally flows into the landing side. In addition, at the upper part of the landing door 13, smoke that flows in from the elevator side R flows into the landing side F through the above-mentioned predetermined gap. In addition, in designing the landing door device, it is difficult to make the gap G1 and the predetermined gap zero.

[0032] Moreover, in the landing door device according to the above-mentioned comparative embodiment, the smoke blocking material 115, the smoke blocking material mounting member 116, and the backing plate 117 constituting the second smoke blocking mechanism 102 are all long vertical members (large parts). Therefore, when replacing components of the second smoke blocking mechanism 102 due to aging deterioration of the smoke blocking material 115, the work of attaching and detaching the components and the work of adjusting the mounting positions of the components become complicated. Furthermore, the interior of the elevator shaft is spatially narrow. Therefore, when replacing components of the second smoke blocking mechanism 102, it is difficult to move long members around inside the elevator shaft.

[0033] <Embodiment> FIG. 8 is a view of the hall door device according to the embodiment as viewed from the direction A in FIG. As shown in Fig. 8, the first door 11 is disposed on the elevator shaft side R, and the second door 12 is disposed on the landing side F. The first door 11 is provided with a first smoke blocking mechanism 201 at a portion P (see Fig. 1) where it overlaps with the second door 12. The second door 12 is provided with a second smoke blocking mechanism 202 at a portion P where it overlaps with the first door 11.

[0034] The first smoke blocking mechanism 201 includes two brackets 203, 204 and two smoke blocking materials 205, 206. Each of the brackets 203, 204 is formed in an L-shape in a plan view. Each of the smoke blocking materials 205, 206 is formed in an L-shape in a plan view. Each of the brackets 203, 204 is made of metal or the like. Each of the smoke blocking materials 205, 206 is made of an elastic body such as rubber.

[0035] The bracket 203 is attached to the side end 11a of the first door 11 via a smoke blocking material 205. The bracket 204 and the smoke blocking material 206 are attached to the bracket 203 via the smoke blocking material 205. In this manner, by combining the members (203, 204, 205, 206) that are L-shaped in plan view, the first smoke blocking mechanism 201 is formed into a Z-shape in plan view. Each of the members (203, 204, 205, 206) that constitute the first smoke blocking mechanism 201 is formed into a vertically elongated shape having a length substantially equal to the range indicated by the symbols P1 and P3 in FIG.

[0036] The second smoke blocking mechanism 202 includes a smoke blocking material 215 and a smoke blocking material mounting member 216. The smoke blocking material 215 is mounted on a door panel 212 of the second door 12. The smoke blocking material mounting member 216 is a member for mounting the smoke blocking material 215 to the door panel 212. Both the smoke blocking material 215 and the smoke blocking material mounting member 216 are disposed in the lower part of the second door 12 (see FIG. 9).

[0037] The smoke blocking material 215 is made of an elastic material such as rubber, and the smoke blocking material mounting member 216 is made of metal or the like. A part of the door panel 212 is formed in a U-shape (C-shape in plan view) in a plan view, and a bent portion 217 in a U-shape in plan view is formed in a part of the door panel 212. The smoke blocking material 215 is mounted on the inside of the bent portion 217 of the door panel 212 using the smoke blocking material mounting member 116. The bent portion 217 is formed vertically with a length equal to the height dimension of the second door 12. The bent portion 217 is an element that constitutes the second smoke blocking mechanism 202 together with a pressed portion 218 described later. The smoke blocking material 215 is not an essential component for achieving the intended object of the present invention. For this reason, the smoke blocking material 215 is not necessary.

[0038] As shown in Fig. 8, the bent portion 217 is formed into a U-shape in a plan view by a first portion 217-1, a second portion 217-2, and a third portion 217-3. The first portion 217-1 and the third portion 217-3 face each other in the width direction of the second door 12 (the left-right direction in Fig. 8). The second portion 217-2 connects the ends of the first portion 217-1 and the third portion 217-3 to each other on the elevator shaft side R of the second door 12. In addition, the first portion 217-1 and the third portion 217-3 are arranged parallel to the thickness direction of the second door 12, and the second portion 217-2 is arranged parallel to the width direction of the second door 12. As a result, when the bent portion 217 is viewed from directly above, the first portion 217-1 and the second portion 217-2 are arranged to form a right angle, and the third portion 217-3 and the second portion 217-2 are also arranged to form a right angle.

[0039] Here, when the landing door 13 is in a closed state, the smoke blocking material 206 of the first smoke blocking mechanism 201 is pressed against the bent portion 217 of the second smoke blocking mechanism 202 from the upper part to the lower part of the landing door 13. In this embodiment, the bent portion 217 of the door panel 212 also has the function of the contact plate 117 (see FIG. 2 ) in the comparative embodiment. Specifically, as shown in FIG. 8 , a part of the bent portion 217 constitutes the pressed portion 218. In other words, the pressed portion 218 is constituted by the bent portion 217 of the door panel 212.

[0040] The pressed portion 218 is formed integrally with the door panel 212 of the second door 12. The pressed portion 218 is formed in a state where a part of the door panel 212 forming the bent portion 217 is bent toward the landing side F. The pressed portion 218 is located near a corner portion formed by the second portion 217-2 and the third portion 217-3 of the bent portion 217. When the landing door 13 is in a closed state, the smoke blocking material 206 of the first smoke blocking mechanism 201 is pressed against the pressed portion 218 of the bent portion 217, thereby blocking the flow of smoke at the portion P where the first door 11 and the second door 12 overlap. The smoke blocking material 206 pressed against the pressed portion 218 corresponds to the first smoke blocking material.

[0041] FIG. 9 is a view of the lower part of the second door 12 in the landing door device according to the embodiment, as viewed from the direction C in FIG. As shown in Fig. 9, at the bottom of the second door 12, a lower end 215a of the smoke blocking material 215 is disposed so as to protrude downward further than the lower end of the smoke blocking material mounting member 216. The lower end 215a of the smoke blocking material 215 is disposed so as to contact the upper surface of the threshold 19 (see Fig. 1). By disposing the lower end 215a of the smoke blocking material 215 in this manner, the gap between the smoke blocking material 215 and the threshold 19 can be blocked to block the flow of smoke. The smoke blocking material 215 corresponds to a third smoke blocking material.

[0042] The length of the smoke blocking material 215 and the smoke blocking material mounting member 216 in the height direction of the second door 12 is very short compared to the smoke blocking material 115 and the smoke blocking material mounting member 116 in the comparative embodiment. Specifically, the length of the smoke blocking material 115 and the smoke blocking material mounting member 116 in the comparative embodiment is approximately equal to the range indicated by symbols P1 and P3 in FIG. 1. In contrast, the length of the smoke blocking material 215 and the smoke blocking material mounting member 216 in the embodiment is equal to or shorter than the range indicated by symbol P3 in FIG. The smoke blocking material 215 is formed in a U-shape in a plan view. For example, the height dimension H of the smoke blocking material 215 can be set to be smaller than the width dimension W of the smoke blocking material 215.

[0043] The smoke blocking material mounting member 216 is formed in an L-shape when viewed from the elevator shaft side R (see FIG. 8). The smoke blocking material mounting member 216 integrally includes a fixing portion 216a fixed to the lower portion of the second door 12 and a mounting portion 216b to which the smoke blocking material 215 is attached. The fixing portion 216a is formed in an L-shape when viewed from above. The mounting portion 216b is formed in a U-shape when viewed from above. The fixing portion 216a is fixed to the inside of the bent portion 217 of the door panel 212 by two rivet members 219. The means for fixing the fixing portion 216a can be changed in various ways. The smoke blocking material 215 is attached to the mounting portion 216b by, for example, adhesion. The smoke blocking material 215 is pressed against the inner surface of the bent portion 217 by the fixing portion 216a.

[0044] Further, a door shoe bracket 225 and a fixing bracket 226 are disposed on the lower part of the second door 12. The door shoe 22 is attached to the door shoe bracket 225. The door shoe bracket 225 is fixed to the fixing bracket 226. The fixing bracket 226 is fixed to the bent portion 217 of the door panel 212 by a rivet member 227.

[0045] FIG. 10 is a diagram showing an arrangement of the blocking mechanism 230 and the door panel 212 in the landing door device according to the embodiment, as viewed from the direction A in FIG.

[0046] As shown in Fig. 10, the blocking mechanism 230 is a mechanism that blocks the upper end of the above-mentioned first smoke blocking mechanism 201. The blocking mechanism 230 is attached to the first door 11 in place of the blocking mechanism 125 (see Fig. 5) in the comparative embodiment. Therefore, the blocking mechanism 230 is disposed in part P2 (above the landing door 13) in Fig. 1. The blocking mechanism 230 is a mechanism that blocks a space formed between the first smoke blocking mechanism 201 and the second smoke blocking mechanism 202 at the upper end of the first smoke blocking mechanism 201. In other words, the blocking mechanism 230 is a mechanism provided for the same purpose as the blocking mechanism 125 in the comparative embodiment.

[0047] The blocking mechanism 230 includes a base bracket 231, a support bracket 233, and a smoke blocking material 234. The base bracket 231 and the support bracket 233 are made of metal or the like. The smoke blocking material 234 is made of an elastic body such as rubber. The smoke blocking material 234 is disposed in a portion facing the second door 12. The smoke blocking material 234 corresponds to a second smoke blocking material.

[0048] The base bracket 231 is an L-shaped bracket. The base bracket 231 is fixed to the side end portion 11a of the first door 11. The base bracket 231 is provided with two mounting holes (not shown). The base bracket 231 is attached to the first door 11 using the two mounting holes with fastening members such as screws and bolts. The support bracket 233 is attached to the base bracket 231.

[0049] The smoke blocking material 234 is attached to the support bracket 233. The smoke blocking material 234 is supported by the support bracket 233. When the landing door 13 is closed as shown in FIG. 1, the smoke blocking material 234 is disposed in a state of facing and contacting the bent portion 217 of the second door 12 as shown in FIG. 10. The smoke blocking material 234 has a contact surface 234a. The contact surface 234a is the main surface of the smoke blocking material 234 disposed on the side facing the bent portion 217, i.e., facing the landing side F. The contact surface 234a is preferably a seamless flat surface. When supported by the support bracket 233, the contact surface 234a is in contact (close contact) with the surface 217a of the bent portion 217 on the hoistway side R. As shown in FIGS. 8 and 10, surface 217a of bent portion 217 is a main surface of second portion 217-2 that faces the hoistway side R.

[0050] Moreover, when the landing door 13 is closed, the folding portion 217 is arranged so as to be in contact with the smoke blocking material 234 over the entire width of the folding portion 217. Specifically, the surface 217a of the folding portion 217 is arranged so as to be in contact, i.e., surface contact, with the contact surface 234a of the smoke blocking material 234 over the entire width of the folding portion 217. The width dimension of the folding portion 217 is the dimension of the folding portion 217 in the left-right direction of FIG. 10. Therefore, the entire width of the folding portion 217 means almost the entire area of ​​the folding portion 217 in the left-right direction of FIG. By bringing the folding portion 217 into contact with the smoke blocking material 234 in this manner, a stable contact state (close contact state) is obtained between the folding portion 217 and the smoke blocking material 234.

[0051] 10, the width of smoke blocking material 234 is greater than the width of bent portion 217. As a result, even if misalignment occurs between first door 11 and second door 12 in the left-right direction of FIG. 10 due to dimensional tolerances of parts or installation errors, a good contact state can be obtained between bent portion 217 and smoke blocking material 234.

[0052] In addition to the above-mentioned advantages, the landing door apparatus according to this embodiment has the following advantages compared to the landing door apparatus according to the comparative embodiment.

[0053] In this embodiment, the bent portion 217 is formed by bending a part of the door panel 212 of the second door 12 into a U-shape in plan view. The pressed portion 218 is formed by the bent portion 217. This prevents the gap G1 and the predetermined gap that are generated in the landing door device according to the comparative embodiment from occurring. Therefore, the landing door device according to this embodiment can improve the smoke blocking performance of the portion P where the first door 11 and the second door 12 overlap when the landing door 13 is closed.

[0054] In addition, in this embodiment, the bent portion 217 having a U-shape in plan view also has the function of the backing plate 117 in the comparative embodiment. Therefore, the backing plate 117 is not necessary. Therefore, according to this embodiment, the number of parts can be reduced. In addition, in the landing door device according to the comparative embodiment, in order to attach the backing plate 117 having a length substantially equivalent to the range indicated by the symbols P1 and P3 in FIG. 1, the smoke blocking material 115 and the smoke blocking material mounting member 116 also need to be configured with members having a length equivalent to that of the backing plate 117. In contrast, in the landing door device according to this embodiment, since the backing plate 117 is not necessary, the components (smoke blocking material 215, smoke blocking material mounting member 216) of the second smoke blocking mechanism 202 can be made smaller. As a result, when replacing the components of the second smoke blocking mechanism 202 due to deterioration over time of the smoke blocking material 215, it becomes possible to easily perform the work of attaching and detaching the components and the work of adjusting the mounting position of the components within the limited space of the elevator shaft.

[0055] In this embodiment, the second smoke blocking mechanism 202 has a smoke blocking material 215 arranged in the lower part of the second door 12, and a smoke blocking material mounting member 216 arranged in the lower part of the second door 12 for mounting the smoke blocking material 215. This allows the components of the second smoke blocking mechanism 202 to be contained within the range indicated by the symbol P3 in FIG.

[0056] In this embodiment, smoke blocking material mounting member 216 integrally includes fixing portion 216a that is fixed to the lower portion of second door 12, and mounting portion 216b to which smoke blocking material 215 is attached. This makes it possible to keep the cost of parts for mounting smoke blocking material 215 to the lower portion of second door 12 low.

[0057] In this embodiment, the smoke shielding material 215 and the attachment portion 216b are each formed in a U-shape in plan view, which allows the smoke shielding material 215 and the attachment portion 216b to be attached without creating extra space inside the bent portion 217 that is U-shaped in plan view.

[0058] <Modifications, etc.> The technical scope of the present invention is not limited to the above-described embodiments, but also includes forms in which various modifications and improvements are made within the scope that can derive specific effects obtained by the constituent elements of the invention or a combination of the constituent elements.

[0059] In the above embodiment, a single-door landing door device having two doors has been described as an example, but the present invention is not limited to this, and can also be applied to a single-door landing device having three doors, or a double-door landing device having four doors. That is, the present invention can be widely applied to a portion where two doors overlap when the landing doors are closed. [Explanation of symbols]

[0060] 10...Landing door device, 11...First door, 12...Second door, 13...Landing door, 201...First smoke blocking mechanism, 202...Second smoke blocking mechanism, 212...Door panel, 206...Smoke blocking material (first smoke blocking material), 215...Smoke blocking material (third smoke blocking material), 216...Smoke blocking material mounting member, 216a...Fixed portion, 216b...Mounting portion, 217...Bending portion, 218...Pressed portion, 230...Blocking mechanism, 234...Smoke blocking material (second smoke blocking material)

Claims

1. A hall door device for an elevator including a hall door having a first door and a second door, The first door is provided with a first smoke blocking mechanism at a portion where the first door overlaps with the second door when the landing door is closed, The second door includes a second smoke blocking mechanism at a portion where the second door overlaps with the first door when the landing door is closed, The first smoke blocking mechanism includes a first smoke blocking material, The second smoke blocking mechanism has a pressed portion against which the first smoke blocking material is pressed when the landing door is closed, The pressed portion is configured by a bent portion formed by bending a part of the door panel of the second door into a U-shape in a plan view. Elevator landing door equipment.

2. the first door has a blocking mechanism that blocks an upper end of the first smoke blocking mechanism and has a second smoke blocking material disposed in a portion facing the second door; The bent portion is disposed so as to be in contact with the second smoke blocking material over an entire width of the bent portion when the landing door is closed.

2. The elevator hall door device according to claim 1.

3. The width dimension of the second smoke shielding material is greater than the width dimension of the folded portion.

3. The elevator hall door device according to claim 2.

4. The second smoke blocking mechanism includes a third smoke blocking material arranged on the lower part of the second door in contact with a threshold of a landing, and a smoke blocking material mounting member arranged on the lower part of the second door for mounting the third smoke blocking material.

2. The elevator hall door device according to claim 1.

5. The smoke barrier mounting member integrally includes a fixing portion that is fixed to a lower portion of the second door and a mounting portion to which the third smoke barrier is attached.

5. The elevator hall door device according to claim 4.

6. The third smoke blocking material and the mounting portion are each formed in a U-shape in a plan view.

6. An elevator hall door device according to claim 5.

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