Elevator landing door device

Abstract

To provide a landing door device of an elevator capable of suppressing the deterioration of smoke insulation performance even when adjusting a flush surface by inserting a liner between a door hanging member and a landing door.SOLUTION: An elevator landing door device comprises a landing door, a modesty panel arranged above the landing door, a door hanging member to connect the landing door to a door hanger, a sliding material for smoke insulation to fill the gap between the modesty panel and the door hanging member, and a smoke insulation cover to fill the gap between the landing door and the door hanging member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] Regarding elevator landing door devices, Patent Document 1 describes a configuration in which a landing door is connected to a door hanger via a door hanging member, and a fascia board is arranged above the landing door with a gap. Patent Document 1 also describes that the surface of the fascia board visible from the landing side and the surface of the landing door are aligned flush (on the same plane). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-93499 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in Patent Document 1, when the landing doors are completely closed in the event of a fire, the gap between the upper end of the landing door and the lower end of the header becomes a passageway for smoke, and therefore a smoke-blocking member needs to be provided. Thus, as a configuration for improving the smoke-blocking performance of the landing door device, for example, a configuration in which the gap between the header and the door hanger is blocked with a smoke-blocking member can be considered.

[0005] On the other hand, when installing an elevator landing door device in a building, a liner may be inserted between the door hanging member and the landing door, and the position of the landing door may be adjusted depending on the number and thickness of the liners, thereby aligning the surface of the header and the surface of the landing door flush. In the following explanation, adjusting the position of the landing door to align the surface of the header and the surface of the landing door flush is also referred to as "flush adjustment."

[0006] However, if a liner is inserted between the door hanging member and the landing door to adjust the surfaces to be flush, the presence of the liner causes a gap to form between the door hanging member and the landing door at a facing portion thereof, thereby reducing the smoke blocking performance of the landing door device.

[0007] An object of the present invention is to provide an elevator landing door device that can suppress a decrease in smoke-blocking performance even when a liner is inserted between the door hanging member and the landing door to adjust the surface flush. [Means for solving the problem]

[0008] In order to solve the above problems, for example, the configurations described in the claims are adopted. The present application includes a plurality of means for solving the above-mentioned problems, and one of them is an elevator landing door device including a landing door, a header arranged above the landing door, a door hanging member connecting the landing door to a door hanger, a smoke-blocking sliding material that closes the gap between the header and the door hanging member or the gap between the header and the door hanger, and a smoke-blocking cover that closes the gap between the landing door and the door hanging member. [Effects of the Invention]

[0009] According to the present invention, even when a liner is inserted between the door hanging member and the landing door to adjust the surfaces to be flush, it is possible to suppress a decrease in smoke blocking performance. Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a view of an elevator hall door device according to an embodiment, seen from the hall side. FIG. [Figure 2] 1 is a view of an elevator hall door device according to an embodiment, seen from the hoistway side. FIG. [Figure 3] 1 is a side view of an elevator hall door device according to an embodiment. FIG. [Figure 4]1 is an enlarged side view of a portion of an elevator landing door device according to an embodiment. FIG. [Figure 5] FIG. 10 is a side view showing a state of the landing door device before flush adjustment. [Figure 6] FIG. 1 is an enlarged side view of a portion of an elevator hall door device according to a reference embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments 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 designated by the same reference numerals, and redundant description will be omitted.

[0012] FIG. 1 is a view of an elevator hall door device according to an embodiment as seen from the hall side. As shown in Figure 1, an elevator landing door device 10 includes a pair of left and right landing doors 11, a pair of left and right vertical frames 12, and a curtain board 13 spanning between these vertical frames 12. The pair of landing doors 11 are so-called double-swing doors that open and close by moving toward and away from each other. Figure 1 shows the landing door 11 in a completely closed state. The pair of vertical frames 12 and the curtain board 13 form a three-sided frame with the curtain board 13 as the upper frame.

[0013] FIG. 2 is a view of the elevator hall door device according to the embodiment as seen from the elevator shaft side. As shown in Fig. 2, the elevator landing door device 10 includes, in addition to the above-mentioned components (11, 12, 13), a door header 16, a door hanger 17, a door hanging member 18, and a landing threshold 19. A door rail 20 is attached to the door header 16, and a roller 21 is attached to the door hanger 17.

[0014] The door header 16 is a member that is fixed to the building via mounting brackets (not shown). A door hanger 17 and a door hanging member 18 are provided for each landing door 11. The length dimension of the door hanging member 18 in the left-right direction in FIG. 2 is approximately the same as the width dimension W of the landing door 11. The door hanger 17 is a member that supports the landing door 11 in a hanging state via the door hanging member 18. The door hanging member 18 is a member that connects the landing door 11 to the door hanger 17. The door rail 20 is a member that is disposed above the landing door 11 and guides the movement of the landing door 11. The landing threshold 19 is a member that is disposed at the lower end of the landing door 11 and guides the movement of the landing door 11. Two rollers 21 are attached to each door hanger 17. The landing door 11 moves in the left-right direction (door opening / closing direction) in FIG. 2 together with the door hanger 17 and the door hanging member 18 as the roller 21 moves while rolling on the door rail 20.

[0015] Fig. 3 is a side view of an elevator hall door device according to an embodiment, and Fig. 4 is a side view of an enlarged portion of the elevator hall door device according to an embodiment. Note that the right side of Fig. 3 shows the hall side R, and the left side of Fig. 3 shows the hoistway side L. This also applies to Fig. 4.

[0016] As shown in FIGS. 3 and 4 , the header 13 is disposed above the landing door 11. Specifically, the header 13 is disposed directly above the landing door 11 with a gap therebetween. The door hanger 17 and the door hanging member 18 are fixed together by a fixing bolt 25. More specifically, the door hanger 17 is configured by an L-shaped plate integrally having a hanger main body 17a and a bent portion 17b. The roller 21 is attached to the hanger main body 17a. The door hanging member 18 is configured by an L-shaped plate integrally having a connecting portion 18a and a bent portion 18b. The connecting portion 18a is connected to the landing door 11 by a connecting bolt 26. The door hanger 17 is disposed with the bent portion 17b facing downward, and the door hanging member 18 is disposed with the bent portion 18b facing upward. A screw hole (not shown) is provided in the bent portion 17b, and a through-hole (not shown) is provided in the bent portion 18b. The male thread of the fixing bolt 25 passes through a through hole in the bent portion 18b and engages with the screw hole in the bent portion 17b. The bent portion 17b of the door hanger 17 and the bent portion 18b of the door hanging member 18 are fixed together by tightening the fixing bolt 25.

[0017] The landing door device 10 also includes a smoke-blocking sliding material 35 that closes the gap between the header panel 13 and the door hanging member 18, and a smoke-blocking cover 36 that closes the gap between the landing door 11 and the door hanging member 18. The smoke-blocking sliding material 35 is composed of a first smoke-blocking sliding material 37 attached to the header panel 13 and a second smoke-blocking sliding material 38 attached to the door hanging member 18.

[0018] The smoke-shielding cover 36 closes the gap between the landing door 11 and the door hanging member 18 above the position where the liner 51 is inserted. The smoke-shielding cover 36 has a length dimension that is approximately the same as the width dimension W of the landing door 11 in the left-right direction in FIG. 2. The first smoke-shielding sliding material 37 and the second smoke-shielding sliding material 38 also have a length dimension that is approximately the same as the width dimension W of the landing door 11 in the left-right direction in FIG. 2. In other words, the smoke-shielding sliding material 35 and the smoke-shielding cover 36 are arranged across the entire width of the landing door 11.

[0019] The first smoke-shielding sliding member 37 is attached to the back panel 13 with screws 27. The first smoke-shielding sliding member 37 is made of, for example, a plate spring made of stainless steel or the like. A contact portion 40 is provided at the free end of the first smoke-shielding sliding member 37. The contact portion 40 is made of, for example, a low-friction resistance material such as fluororesin. Furthermore, the contact portion 40 contacts the second smoke-shielding sliding member 38 with an appropriate pressure due to the springiness of the first smoke-shielding sliding member 37 itself. The free end of the first smoke-shielding sliding member 37 is the end opposite the fixed end that is fixed to the back panel 13 with screws 27.

[0020] The second smoke-shielding sliding material 38 is fixed in a state sandwiched between the door hanger 17 and the door hanging member 18. More specifically, the second smoke-shielding sliding material 38 is configured as an L-shaped plate integrally having a vertical piece 38a and a horizontal piece 38b. The plate thickness of the second smoke-shielding sliding material 38 is smaller than the plate thickness of the door hanging member 18. The vertical piece 38a of the second smoke-shielding sliding material 38 is disposed in close contact with the connecting portion 18a of the door hanging member 18, and the horizontal piece 38b of the second smoke-shielding sliding material 38 is disposed in close contact with the bent portion 18b of the door hanging member 18. The contact portion 40 of the first smoke-shielding sliding material 37 described above is in contact with the vertical piece 38a of the second smoke-shielding sliding material 38. In addition, the horizontal piece 38b of the second smoke-blocking sliding material 38 is sandwiched between the bent portion 17b of the door hanger 17 and the bent portion 18b of the door hanging member 18, and in this state the second smoke-blocking sliding material 38 is fixed by the tightening force of the connecting bolt 26.

[0021] On the other hand, the smoke cover 36 includes a movable piece 41 and a fixed piece 42. The smoke cover 36 also has a plurality of (three in the example of FIG. 4) rotation shafts 39a, 39b, 39c. The plurality of rotation shafts 39a, 39b, 39c are used to change the posture of the smoke cover 36 in accordance with the position of the landing door 11 in the depth direction of the landing entrance (the left-right direction in FIG. 4). The posture of the smoke cover 36 mainly refers to the posture of the movable piece 41. A specific description will be given below.

[0022] Each of the rotation shafts 39a, 39b, and 39c has an axis structure similar to that of a hinge, for example. Therefore, the movable piece 41 is rotatable about the rotation shaft 39a (fulcrum) relative to the second smoke-shielding sliding member 38, and is rotatable about the rotation shaft 39c relative to the fixed piece 42. The movable piece 41 is also rotatable about the rotation shaft 39b. This allows the position of the smoke-shielding cover 36 to be freely changed, from a position in which the movable piece 41 is diagonally extended as shown in FIG. 4 to a position in which the movable piece 41 is bent in an L-shape as shown in FIG. 5.

[0023] Movable piece 41 of smoke shielding cover 36 is connected to the lower end of second smoke shielding sliding member 38 via rotating shaft 39a. As a result, smoke shielding cover 36 is configured integrally with second smoke shielding sliding member 38. In addition, movable piece 41 is connected to the upper end of fixed piece 42 via rotating shaft 39c.

[0024] The fixing piece 42 of the smoke cover 36 is sandwiched between the door hanging member 18 and the landing door 11 and fixed by tightening the connecting bolt 26. The fixing piece 42 is provided with a through hole or groove for passing the male thread portion of the connecting bolt 26. The fixing piece 42 is disposed in close contact with the back surface 11b of the landing door 11. As shown in FIG. 3 , the back surface 11b of the landing door 11 is the surface opposite to the front surface 11a of the landing door 11, that is, the surface of the landing door 11 that is visible from the elevator shaft side L.

[0025] In addition to the above-described fixing piece 42, a plurality of liners 51 (three in the example of FIG. 4 ) are inserted between the door hanging member 18 and the landing door 11. The liner 51 is a member that is inserted between the connecting portion 18a of the door hanging member 18 and the fixing piece 42 of the smoke cover 36 in order to align the surface 13a of the header 13 and the surface 11a of the landing door 11 flush with each other. The surface 13a of the header 13 is the surface of the header 13 that is visible from the landing side R, as shown in FIG. 3 . The liner 51 is configured by a substantially U-shaped plate, as shown in FIG. 2 . The liner 51 is disposed between the connecting portion 18a and the fixing piece 42, and the fixing piece 42 is disposed between the liner 51 and the landing door 11. The liner 51 is fixed by tightening the connecting bolt 26 while being sandwiched between the connecting portion 18a and the fixing piece 42.

[0026] FIG. 5 shows the state before the surface 13a of the header 13 and the surface 11a of the landing door 11 are adjusted to be flush with each other, and FIG. 4 shows the state after the surface 13a of the header 13 and the surface 11a of the landing door 11 are adjusted to be flush with each other. First, before the flush adjustment, as shown in Fig. 5, two liners 51 with different thickness dimensions are inserted, and in this state, a step d is generated between the surface 13a of the header 13 and the surface 11a of the landing door 11. On the other hand, after the flush adjustment, as shown in Fig. 4, a total of three liners 51 are inserted, including a liner 51 with a thickness dimension equivalent to the above-mentioned step d, and as a result, the surface 13a of the header 13 and the surface 11a of the landing door 11 are flush with each other. When performing the flush adjustment, the number and thickness of the liners 51 inserted between the door hanging member 18 and the landing door 11 are determined depending on the degree to which the position of the landing door 11 is adjusted, and in some cases, it may not be necessary to insert a liner 51. The flush adjustment is necessary because dimensional errors, installation errors, and the like occur in the components that constitute the landing door device 10.

[0027] Here, a reference embodiment for comparison with the embodiment will be described. FIG. 6 is an enlarged side view of a part of an elevator hall door device according to a reference embodiment. As shown in FIG. 6, the elevator hall door device 100 according to the reference embodiment has the same configuration as the hall door device 10 according to the embodiment, except that it does not include the smoke blocking cover 36 (see FIG. 4).

[0028] In this landing door device 100, when the landing door 11 opens or closes, the contact portion 40 of the first smoke-blocking sliding member 37 and the vertical piece 38a of the second smoke-blocking sliding member 38 slide against each other. Therefore, the gap between the header panel 13 and the door hanging member 18 is maintained in a state of being blocked by the first smoke-blocking sliding member 37 and the second smoke-blocking sliding member 38. This point is the same as in the case of the above-mentioned embodiment.

[0029] On the other hand, the liner 51 inserted between the door hanging member 18 and the landing door 11 is configured by a substantially U-shaped plate as shown in FIG. 2. For this reason, in the portion where the liner 51 is not arranged in the left-right direction of FIG. 2, a gap is generated in the portion where the door hanging member 18 and the landing door 11 face each other. This gap corresponds to the insertion thickness T of the liner 51 (see FIG. 6). Such a gap becomes a passageway for smoke in the event of a fire. For this reason, if the liner 51 is inserted between the door hanging member 18 and the landing door 11 and adjusted to be flush, the smoke blocking performance will be reduced.

[0030] In contrast to this, the landing door device 10 according to the embodiment described above is configured to include the smoke-blocking cover 36 in addition to the first smoke-blocking sliding member 37 and the second smoke-blocking sliding member 38 that constitute the smoke-blocking sliding member 35. When the surface 13a of the header panel 13 and the surface 11a of the landing door 11 are adjusted to be flush with each other by inserting the liner 51, the smoke-blocking cover 36 is arranged in a state of closing the gap between the landing door 11 and the door hanging member 18 both before and after the flush adjustment, as shown in Figs. 4 and 5 . Therefore, even when the liner 51 is inserted between the door hanging member 18 and the landing door 11 to adjust the flushness, it is possible to suppress a decrease in smoke-blocking performance.

[0031] In the present embodiment, the smoke cover 36 has a plurality of rotation shafts 39a, 39b, and 39c. As a result, when adjusting the position of the landing door device 10 for flush adjustment, the position adjustment of the landing door device 10 can be flexibly accommodated by changing the posture of the smoke cover 36 (particularly, the movable piece 41) with each of the rotation shafts 39a, 39b, and 39c as a fulcrum.

[0032] Furthermore, in this embodiment, the smoke shielding cover 36 is configured integrally with the second smoke shielding sliding member 38. As a result, there is no need to ensure space (for example, space for screw fastening) for fixing the smoke shielding cover 36 to the door hanging member 18, compared to when the smoke shielding cover 36 is configured separately from the second smoke shielding sliding member 38. This makes it possible to keep the height dimension of the door hanging member 18 small.

[0033] In the present embodiment, the smoke cover 36 is provided with a fixing piece 42, and this fixing piece 42 is fixed in a state of being sandwiched between the door hanging member 18 and the landing door 11. As a result, when the door hanging member 18 is fixed to the landing door 11 by tightening the connecting bolt 26, the tightening force of the connecting bolt 26 can be used to fix the fixing piece 42 of the smoke cover 36.

[0034] <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 and their combinations.

[0035] For example, in the above embodiment, the smoke-blocking sliding material 35 is arranged so as to block the gap between the fascia board 13 and the door hanging member 18, but this is not limited thereto, and the smoke-blocking sliding material 35 may also be arranged so as to block the gap between the fascia board 13 and the door hanger 17.

[0036] In addition, in the above embodiment, the second smoke-blocking sliding material 38 is attached to the door hanging member 18, but this is not limiting, and the second smoke-blocking sliding material 38 may also be attached to the door hanger 17. [Explanation of symbols]

[0037] 10...Landing door device, 11...Landing door, 11a...Surface, 13...Curtain panel, 13a...Surface, 17...Door hanger, 18...Door hanging member, 35...Smoke-blocking sliding material, 36...Smoke-blocking cover, 37...First smoke-blocking sliding material, 38...Second smoke-blocking sliding material, 39a, 39b, 39c...Rotating shaft, 42...Fixing piece

Claims

1. Landing door and A panel disposed above the landing door; a door hanging member that connects the landing door to a door hanger; A smoke-blocking sliding material that blocks a gap between the header and the door hanging member or a gap between the header and the door hanger; a smoke-blocking cover that closes a gap between the landing door and the door hanging member; An elevator landing door device comprising:

2. The smoke cover has a plurality of rotation axes for changing the posture of the smoke cover according to the position of the landing door in the depth direction of the landing entrance. The elevator landing door device according to claim 1.

3. The smoke-blocking sliding material is A first smoke-blocking sliding member attached to the panel; a second smoke-blocking sliding material attached to the door hanging member or the door hanger, The smoke-blocking cover is integrally formed with the second smoke-blocking sliding member. The elevator landing door device according to claim 1.

4. The smoke-blocking cover includes a fixing piece that is fixed in a state where it is sandwiched between the door hanging member and the landing door. The elevator landing door device according to claim 1.

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