Elevator hoistway water ingress suppression device

Abstract

To obtain a flooding control device for an elevator hoistway that can more reliably control water flowing into the boarding area from entering the hoistway.SOLUTION: A flooding control device for an elevator hoistway has a door threshold gap closure device 8 that has a water-absorbing and expanding function and that closes a door threshold gap 7, which is the gap between a passenger door 3 and a passenger threshold 6, by absorbing water and expanding. The door threshold gap closure device 8 has a door-side blocking member 801 provided on the passenger door 3. The door-side blocking member 801 includes a door-side expansion part 803 having a water-absorbing expansion function. As the door-side expansion part 803 absorbs water and expands, the door-side blocking member 801 comes into contact with the passenger threshold 6 and closes the door threshold gap 7.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to an elevator hoistway flooding prevention device that suppresses water flowing into the hoistway from the landing.

Background Art

[0002] Conventionally, there is known an elevator hoistway flooding prevention device including a landing sill and an expansion member provided on the landing sill that expands by absorbing water. A groove for the expansion member is formed in a portion on the landing side of the upper surface of the landing sill, closer to the landing than the landing door. The expansion member is inserted into the groove for the expansion member.

[0003] When water flows into the landing due to rainfall or the like, the water flowing into the landing reaches the groove for the expansion member of the landing sill. When the water flowing into the landing reaches the groove for the expansion member of the landing sill, the expansion member inserted into the groove for the expansion member absorbs the water and expands. The expanded expansion member extends upward from the upper surface of the landing sill. As a result, the water flowing into the landing is blocked by the expansion member. Therefore, it is possible to suppress the water flowing into the landing from exceeding the landing sill. As a result, it is possible to suppress the water flowing into the landing from entering the hoistway (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when a large amount of water flows into the landing, the water flowing into the landing will exceed the expanded expansion member. As a result, there is a problem that the water flowing into the landing exceeds the landing sill and enters the hoistway.

[0006] The present disclosure has been made to solve the above-described problems, and an object thereof is to provide an elevator hoistway flooding prevention device that can more reliably prevent water flowing into the landing from entering the hoistway.

Means for Solving the Problems

[0007] The elevator hoistway flooding prevention device according to the present disclosure has a water absorption expansion function, which is a function of expanding by absorbing water, and includes a door sill gap closing device that closes the door sill gap, which is the gap between the landing door and the landing sill, by absorbing water and expanding.

Effects of the Invention

[0008] According to the elevator hoistway flooding prevention device according to the present disclosure, it is possible to more reliably prevent water flowing into the landing from entering the hoistway.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0010] Embodiment 1. FIG. 1 is a front view showing an elevator equipped with a hoistway flooding suppression device according to Embodiment 1. The elevator includes a landing three-sided frame 2 in which a landing entrance 1 is formed, a pair of landing doors 3 that open and close the landing entrance 1, a plurality of shoes 4 provided on each of the landing doors 3, and a landing sill 6 provided on the landing 5.

[0011] The landing entrance 1 is an entrance through which elevator users pass. One landing entrance 1 is formed on each floor wall of the building in which the elevator is installed.

[0012] The landing three-sided frame 2 has a pair of vertical frames 201 and an upper frame 202 provided across the pair of vertical frames 201. The pair of vertical frames 201 are arranged apart from each other in the width direction A of the landing entrance 1. Each of the pair of vertical frames 201 is arranged to extend in the height direction B. The height direction B is a direction perpendicular to the horizontal plane. The upper frame 202 is connected to the upper end of each of the pair of vertical frames 201.

[0013] Each landing door 3 moves in the width direction A of the landing entrance 1. Also, each landing door 3 moves in opposite directions to each other. By the movement of each landing door 3, the landing entrance 1 is opened and closed.

[0014] A plurality of shoes 4 are provided on each landing door 3. Each shoe 4 is arranged to extend downward from the landing door 3.

[0015] The plurality of shoes 4 are arranged at intervals in the width direction A of the landing entrance 1. Therefore, a space is formed between a pair of shoes 4 adjacent to each other in the width direction A.

[0016] Figure 2 is a side view showing the main part of the elevator in Figure 1. Figure 3 is a view showing a state where water has flowed into the landing 5 in Figure 2. On the upper surface of the landing sill 6, a sill groove 601 is formed. The sill groove 601 is arranged so as to extend in the frontage direction A of the landing entrance 1. The shoe 4 is inserted into the sill groove 601 from above. When the shoe 4 is inserted into the sill groove 601 from above, the movement of the landing door 3 in the depth direction C of the landing entrance 1 is restricted.

[0017] In the height direction B, a gap is formed between the landing door 3 and the landing sill 6. The gap formed between the landing door 3 and the landing sill 6 is defined as the door-sill gap 7.

[0018] The elevator hoistway flooding suppression device according to Embodiment 1 includes a door-sill gap closing device 8. The door-sill gap closing device 8 has a door-side closing member 801 provided on the landing door 3.

[0019] The door-side closing member 801 is attached to the lower end of the landing door 3. Therefore, the door-side closing member 801 moves in the frontage direction A of the landing entrance 1 as the landing door 3 moves. The door-side closing member 801 is arranged closer to the landing 5 than the shoe 4 in the depth direction C of the landing entrance 1. In other words, the door-side closing member 801 is arranged farther from the hoistway 9 than the shoe 4 in the depth direction C. Note that the door-side closing member 801 may be arranged closer to the hoistway 9 than the shoe 4 in the depth direction C. Also, the door-side closing member 801 may be arranged in both a region closer to the landing 5 than the shoe 4 in the depth direction C and a region closer to the hoistway 9 than the shoe 4 in the depth direction C. The depth direction C is a direction perpendicular to both the frontage direction A and the height direction B. The door-side closing member 801 is provided in the door-sill gap 7 over the entire frontage direction A.

[0020] The door-side closing member 801 includes a water-stop portion 802 that can be elastically deformed and a door-side expansion portion 803 having a function of expanding by absorbing water.

[0021] Examples of the material constituting the water stop portion 802 include rubber or resin. Examples of the material constituting the door-side expansion portion 803 include polymer.

[0022] The water stop portion 802 is attached to the lower end portion of the landing door 3. Specifically, the water stop portion 802 is attached to the lower surface of the landing door 3.

[0023] The water stop portion 802 is provided in the door threshold gap 7. The shape of the water stop portion 802 changes between a shape in which the door threshold gap 7 is closed and a shape in which the door threshold gap 7 is open. The water stop portion 802 is provided in the door threshold gap 7 across the entire width in the frontage direction A of the landing entrance 1. Therefore, when the water stop portion 802 closes the door threshold gap 7, the door threshold gap 7 is closed across the entire width in the frontage direction A.

[0024] The door-side expansion portion 803 is attached to the water stop portion 802. Note that the door-side expansion portion 803 may be attached to the lower end portion of the landing door 3. When the door-side expansion portion 803 absorbs water and expands, the door-side expansion portion 803 pushes the water stop portion 802 toward the landing sill 6. As a result, the water stop portion 802 comes into contact with the landing sill 6 to close the door threshold gap 7.

[0025] Since the door-side closing member 801 has the water stop portion 802, the shape of the door-side closing member 801 changes between a shape in which the door threshold gap 7 is closed and a shape in which the door threshold gap 7 is open. Also, since the door-side closing member 801 has the water stop portion 802, when the door-side expansion portion 803 absorbs water and expands, the door-side closing member 801 comes into contact with the landing sill 6 to close the door threshold gap 7. Also, since the door-side closing member 801 has the water stop portion 802, when the door-side closing member 801 closes the door threshold gap 7, the door threshold gap 7 is closed across the entire width in the frontage direction A of the landing entrance 1.

[0026] Since the threshold sill gap closing device 8 has the door-side closing member 801, the threshold sill gap closing device 8 has a water absorption and expansion function. Also, since the threshold sill gap closing device 8 has the door-side closing member 801, the threshold sill gap closing device 8 closes the threshold sill gap 7 by absorbing water and expanding.

[0027] When water flows into the landing 5 due to rainfall or the like, the water that has flowed into the landing 5 flows into the threshold sill gap 7. The water that has flowed into the threshold sill gap 7 comes into contact with the door-side expansion part 803. The water that has come into contact with the door-side expansion part 803 is absorbed by the door-side expansion part 803. The door-side expansion part 803 that has absorbed water expands.

[0028] When the door-side expansion part 803 absorbs water and expands, the water stop part 802 changes from a shape in which the threshold sill gap 7 is open to a shape in which the threshold sill gap 7 is closed. In other words, when the door-side expansion part 803 absorbs water and expands, the door-side closing member 801 comes into contact with the landing sill 6 and closes the threshold sill gap 7. More specifically, the threshold sill gap closing device 8 closes the threshold sill gap 7 by absorbing water and expanding.

[0029] By the door-side closing member 801 closing the threshold sill gap 7, the water that has entered the threshold sill gap 7 from entering the elevator shaft 9 is suppressed. As a result, the water that has flowed into the landing 5 from entering the elevator shaft 9 is suppressed.

[0030] As described above, the hoistway flooding prevention device of the elevator according to Embodiment 1 includes a threshold gap closing device 8. The threshold gap closing device 8 has a water absorption and expansion function. The threshold gap closing device 8 closes the threshold gap 7 by absorbing water and expanding. According to this configuration, when water flows into the landing 5, the threshold gap closing device 8 closes the threshold gap 7 by absorbing water and expanding. Thereby, the threshold gap closing device 8, together with the landing door 3, suppresses the water flowing into the landing 5 from entering the hoistway 9. Therefore, even when a large amount of water flows into the landing 5, it is possible to suppress the water flowing into the landing 5 from entering the hoistway 9. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9.

[0031] Further, the threshold gap closing device 8 has a door-side closing member 801 provided on the landing door 3. The door-side closing member 801 includes a door-side expansion portion 803 having a water absorption and expansion function. When the door-side expansion portion 803 absorbs water and expands, the door-side closing member 801 contacts the landing threshold 6 to close the threshold gap 7. According to this configuration, when water flows into the landing 5, the door-side expansion portion 803 absorbs water and expands, so that the door-side closing member 801 closes the threshold gap 7. Thereby, the door-side closing member 801, together with the landing door 3, suppresses the water flowing into the landing 5 from entering the hoistway 9. Therefore, even when a large amount of water flows into the landing 5, it is possible to suppress the water flowing into the landing 5 from entering the hoistway 9. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9. Also, when no water is flowing into the landing 5, the door-side closing member 801 moves together with the landing door 3. Thereby, it is possible to prevent an elevator user from hitting the door-side closing member 801. Therefore, it is possible to prevent the door-side closing member 801 from coming off the landing door 3.

[0032] In addition, in Embodiment 1, the configuration in which the door-side closing member 801 includes the water stop portion 802 and the door-side expansion portion 803 has been described. However, the door-side closing member 801 may have a configuration that does not have the water stop portion 802 and has only the door-side expansion portion 803. Even in this case, when the door-side expansion portion 803 absorbs water and expands, the door-side closing member 801 comes into contact with the landing threshold 6 and closes the door threshold gap 7.

[0033] Embodiment 2. FIG. 4 is a side view showing a main part of an elevator provided with an in-hoistway water intrusion suppression device according to Embodiment 2. FIG. 5 is a view showing a state in which water has flowed into the landing in FIG. 4. Note that in FIGS. 4 and 5, the shoe 4 is omitted.

[0034] In the in-hoistway water intrusion suppression device of the elevator according to Embodiment 2, the door threshold gap closing device 8 has a door-side closing member 801 provided on the landing door 3 and a plurality of threshold-side closing members 804 provided on the landing threshold 6. Each threshold-side closing member 804 is disposed in the threshold groove 601.

[0035] The configuration of the door-side closing member 801 in the in-hoistway water intrusion suppression device of the elevator according to Embodiment 2 is the same as the configuration of the door-side closing member 801 in the in-hoistway water intrusion suppression device of the elevator according to Embodiment 1.

[0036] Each threshold-side closing member 804 is attached to a side surface of the threshold groove 601 so as not to hit the shoe 4. In this example, recesses 602 are formed in each of a pair of side surfaces of the threshold groove 601 facing the depth direction C of the landing entrance 1. Each threshold-side closing member 804 is disposed in each recess 602. Note that the threshold-side closing member 804 is not limited to the side surface of the threshold groove 601 and may be attached to the bottom surface of the threshold groove 601.

[0037] Each threshold-side closing member 804 is arranged so as to be displaced in the frontage direction A of the landing entrance 1 with respect to the area where the shoes 4 are arranged when the landing door 3 closes the landing entrance 1. Therefore, when the landing door 3 closes the landing entrance 1, each threshold-side closing member 804 does not face the shoes 4. Each threshold-side closing member 804 may be arranged in the threshold groove 601 over the entire frontage direction A of the landing entrance 1.

[0038] Each threshold-side closing member 804 includes a threshold-side expansion part 805 having a water absorption expansion function. Examples of the material constituting the threshold-side expansion part 805 include polymer polymers.

[0039] The shape of the threshold-side expansion part 805 changes between a shape in which the door-threshold gap 7 is closed and a shape in which the door-threshold gap 7 is opened. Since the threshold-side closing member 804 has the threshold-side expansion part 805, the shape of the threshold-side closing member 804 changes between a shape in which the door-threshold gap 7 is closed and a shape in which the door-threshold gap 7 is opened. Further, since the threshold-side closing member 804 has the threshold-side expansion part 805, when the threshold-side expansion part 805 absorbs water and expands, the threshold-side closing member 804 contacts the landing door 3 to close the door-threshold gap 7.

[0040] Since the door-threshold gap closing device 8 has the threshold-side closing member 804, the door-threshold gap closing device 8 has a water absorption expansion function. Further, since the door-threshold gap closing device 8 has the threshold-side closing member 804, the door-threshold gap closing device 8 closes the door-threshold gap 7 by absorbing water and expanding.

[0041] In FIG. 5, a gap is shown between the door-side closing member 801 in which the door-side expansion part 803 has expanded and the threshold-side closing member 804 in which the threshold-side expansion part 805 has expanded. However, the threshold-side closing member 804 in which the threshold-side expansion part 805 has expanded contacts the surface on the hoistway 9 side of the door-side closing member 801 in which the door-side expansion part 803 has expanded. Thereby, when the threshold-side expansion part 805 absorbs water and expands, the threshold-side closing member 804 restricts the movement of the door-side closing member 801 to the hoistway 9 side.

[0042] Other configurations of the hoistway flooding prevention device for an elevator according to Embodiment 2 are the same as those of the hoistway flooding prevention device for an elevator according to Embodiment 1.

[0043] As described above, in the hoistway flooding prevention device for an elevator according to Embodiment 2, the threshold gap closing device 8 has a threshold side closing member 804 provided on the landing threshold 6. The threshold side closing member 804 includes a threshold side expansion portion 805 having a water absorption expansion function. When the threshold side expansion portion 805 absorbs water and expands, the threshold side closing member 804 comes into contact with the landing door 3 to close the threshold-door gap 7. According to this configuration, when water flows into the landing 5, the threshold side expansion portion 805 absorbs water and expands, so that the threshold side closing member 804 closes the threshold-door gap 7. Thereby, the threshold side closing member 804, together with the landing door 3, suppresses the water flowing into the landing 5 from entering the hoistway 9. Therefore, even when a large amount of water flows into the landing 5, it is possible to suppress the water flowing into the landing 5 from entering the hoistway 9. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9.

[0044] Further, the threshold side closing member 804 is provided in the threshold groove 601. Thereby, it is possible to prevent the elevator user from hitting the threshold side closing member 804. Therefore, it is possible to prevent the threshold side closing member 804 from coming off the landing threshold 6.

[0045] Further, when the threshold side expansion portion 805 absorbs water and expands, the threshold side closing member 804 restricts the movement of the door side closing member 801 toward the hoistway 9 side. According to this configuration, when water flows into the landing 5, it is possible to prevent the door side closing member 801 from being washed toward the hoistway 9 side. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9.

[0046] In addition, in the second embodiment, the description has been given of the configuration in which the door threshold gap closing device 8 includes the door-side closing member 801 and the threshold-side closing member 804. However, the door threshold gap closing device 8 may have a configuration in which it does not include the door-side closing member 801 and includes the threshold-side closing member 804.

[0047] Further, in the second embodiment, the description has been given of the configuration of the threshold-side closing member 804 that includes only the threshold-side expansion portion 805. However, the threshold-side closing member 804 may have a configuration that includes the threshold-side expansion portion 805 and a water-stopping portion that closes the door threshold gap 7 when the threshold-side expansion portion 805 absorbs water and expands.

[0048] Embodiment 3. FIG. 6 is a side view showing a main part of an elevator provided with an elevator hoistway water intrusion suppression device according to Embodiment 3. FIG. 7 is a view showing a state in which water has flowed into the landing of FIG. 6. In FIGS. 6 and 7, one of the pair of vertical frames 201 is shown. In the depth direction C of the landing entrance 1, gaps are formed between each of the pair of vertical frames 201 and the landing door 3. Each of the gaps formed between each vertical frame 201 and the landing door 3 is defined as a door vertical frame gap 10.

[0049] The elevator hoistway water intrusion suppression device according to Embodiment 3 includes a door vertical frame gap closing device 11. The door vertical frame gap closing device 11 has a pair of vertical frame side closing members 111 provided on each of the vertical frames 201.

[0050] Each of the vertical frame side closing members 111 is attached to the surface on the hoistway 9 side at the lower part of each vertical frame 201. In this example, a recess 203 is formed on the surface on the hoistway 9 side at the lower part of each vertical frame 201. Each of the vertical frame side closing members 111 is disposed in each recess 203.

[0051] Each of the vertical frame side closing members 111 includes a vertical frame side expansion portion 112 having a water absorption expansion function. Examples of the material constituting the vertical frame side expansion portion 112 include polymer polymers.

[0052] The shape of the vertical frame side expansion part 112 changes between a shape in which the lower part of the door vertical frame gap 10 is blocked and a shape in which the lower part of the door vertical frame gap 10 is open. Since the vertical frame side closing member 111 has the vertical frame side expansion part 112, the shape of the vertical frame side closing member 111 changes between a shape in which the lower part of the door vertical frame gap 10 is blocked and a shape in which the lower part of the door vertical frame gap 10 is open. Also, since the vertical frame side closing member 111 has the vertical frame side expansion part 112, when the vertical frame side expansion part 112 absorbs water and expands, the vertical frame side closing member 111 contacts the landing door 3 to block the lower part of the door vertical frame gap 10.

[0053] Since the door vertical frame gap closing device 11 has the vertical frame side closing member 111, the door vertical frame gap closing device 11 has a water absorption and expansion function. Also, since the door vertical frame gap closing device 11 has the vertical frame side closing member 111, the door vertical frame gap closing device 11 blocks the lower part of the door vertical frame gap 10 by absorbing water and expanding.

[0054] When water flows into the landing 5 due to rainfall or the like, the water that has flowed into the landing 5 flows into the lower part of the door vertical frame gap 10. The water that has flowed into the lower part of the door vertical frame gap 10 contacts the vertical frame side expansion part 112. The water that has contacted the vertical frame side expansion part 112 is absorbed by the vertical frame side expansion part 112. The vertically frame side expansion part 112 that has absorbed water expands.

[0055] When the vertical frame side expansion part 112 absorbs water and expands, the vertical frame side expansion part 112 changes from a shape in which the lower part of the door vertical frame gap 10 is open to a shape that blocks the lower part of the door vertical frame gap 10. In other words, when the vertical frame side expansion part 112 absorbs water and expands, the vertical frame side closing member 111 contacts the landing door 3 to block the lower part of the door vertical frame gap 10. More specifically, the door vertical frame gap closing device 11 blocks the lower part of the door vertical frame gap 10 by absorbing water and expanding.

[0056] By the vertical frame side closing member 111 blocking the lower part of the door vertical frame gap 10, the water that has entered the lower part of the door vertical frame gap 10 is suppressed from entering the hoistway 9. As a result, the water that has flowed into the landing 5 is suppressed from entering the hoistway 9.

[0057] Other configurations of the elevator hoistway flooding prevention device according to Embodiment 3 are the same as those of the elevator hoistway flooding prevention device according to Embodiment 1 or Embodiment 2.

[0058] As described above, the elevator hoistway flooding prevention device according to Embodiment 3 includes a door vertical frame gap closing device 11. The door vertical frame gap closing device 11 has a water absorption and expansion function. The door vertical frame gap closing device 11 closes the lower part of the door vertical frame gap 10 by absorbing water and expanding. According to this configuration, when water flows into the landing 5, the door vertical frame gap closing device 11 closes the lower part of the door vertical frame gap 10 by absorbing water and expanding. Thereby, the door vertical frame gap closing device 11, together with the landing door 3, suppresses the water flowing into the landing 5 from entering the hoistway 9. Therefore, even when a large amount of water flows into the landing 5, it is possible to suppress the water flowing into the landing 5 from entering the hoistway 9. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9.

[0059] In addition, the door vertical frame gap closing device 11 has a vertical frame side closing member 111 provided on the vertical frame 201. The vertical frame side closing member 111 includes a vertical frame side expansion portion 112 having a water absorption and expansion function. When the vertical frame side expansion portion 112 absorbs water and expands, the vertical frame side closing member 111 comes into contact with the landing door 3 to close the lower part of the door vertical frame gap 10. According to this configuration, when water flows into the landing 5, the vertical frame side expansion portion 112 absorbs water and expands, so that the vertical frame side closing member 111 closes the lower part of the door vertical frame gap 10. As a result, the vertical frame side closing member 111, together with the landing door 3, suppresses the water flowing into the landing 5 from entering the hoistway 9. Therefore, even when a large amount of water flows into the landing 5, it is possible to suppress the water flowing into the landing 5 from entering the hoistway 9. As a result, it is possible to more reliably suppress the water flowing into the landing 5 from entering the hoistway 9. Further, the vertical frame side closing member 111 is provided on the vertical frame 201. Thereby, it is possible to prevent the elevator user from hitting the vertical frame side closing member 111. Therefore, it is possible to prevent the vertical frame side closing member 111 from coming off the vertical frame 201.

[0060] In addition, in the third embodiment, the configuration of the vertical frame side closing member 111 including only the vertical frame side expansion portion 112 has been described. However, the vertical frame side closing member 111 may have a configuration including the vertical frame side expansion portion 112 and a water stop portion that closes the lower part of the door vertical frame gap 10 when the vertical frame side expansion portion 112 absorbs water and expands.

[0061] Embodiment 4. FIG. 8 is a side view showing a main part of an elevator provided with an in-hoistway water intrusion prevention device according to Embodiment 4. FIG. 9 is a view showing a state where water has flowed into the landing of FIG. 8. The in-hoistway water intrusion prevention device of the elevator according to Embodiment 4 includes a door sill gap closing device 8 and a movement restriction device 12.

[0062] The threshold gap closing device 8 has a plurality of door-side closing members 801 and a plurality of threshold-side closing members 804. Each door-side closing member 801 is attached to the lower end of the landing door 3. The plurality of door-side closing members 801 are arranged in both a region closer to the landing 5 than the shoe 4 and a region closer to the hoistway 9 than the shoe 4.

[0063] Each door-side closing member 801 includes only the door-side expansion part 803. Note that the door-side closing member 801 may be configured to include a water stop part 802, like the door-side closing member 801 of the hoistway flooding suppression device according to the first embodiment.

[0064] The configuration of the threshold-side closing member 804 in the hoistway flooding suppression device of the elevator according to the fourth embodiment is the same as the configuration of the threshold-side closing member 804 in the hoistway flooding suppression device of the elevator according to the second embodiment.

[0065] The movement restricting device 12 has a restricting member 121 that moves in the height direction B and a driving device 122 that moves the restricting member 121 in the height direction B.

[0066] The restricting member 121 is arranged on the hoistway 9 side rather than the landing threshold 6. Therefore, the restricting member 121 is arranged on the hoistway 9 side rather than the door-side closing member 801 and the threshold-side closing member 804. The restricting member 121 moves between a restricting position where the upper end of the restricting member 121 protrudes upward from the upper surface of the landing threshold 6 and a storage position where the upper end of the restricting member 121 does not protrude upward from the upper surface of the landing threshold 6. In this example, when the position of the restricting member 121 is the restricting position, the upper end of the restricting member 121 reaches the landing door 3.

[0067] When the position of the restricting member 121 is the restricting position, the restricting member 121 restricts the door-side closing member 801 and the threshold-side closing member 804 from moving to the hoistway 9 side.

[0068] The drive device 122 includes a floating member 123 that supports the restricting member 121 and a water storage tank 124 in which the floating member 123 is disposed inside. In the landing sill 6, a through hole 603 is formed across the upper and lower surfaces of the landing sill 6. In this example, the through hole 603 is formed across the bottom surface of the sill groove 601 and the bottom surface of the landing sill 6. The water flowing into the sill groove 601 passes through the through hole 603 and falls. The water storage tank 124 is disposed below the lower end of the through hole 603. Thereby, the water that has passed through the through hole 603 and fallen is stored in the water storage tank 124.

[0069] The floating member 123 is made of a material that floats in water. In this example, a space filled with air is formed inside the floating member 123. When water is stored in the water storage tank 124, the floating member 123 is pushed up by the water and the floating member 123 rises. When the floating member 123 rises, the restricting member 121 moves from the storage position to the restricting position.

[0070] When water flows into the landing 5 due to rainfall or the like, the water that has flowed into the landing 5 flows into the door sill gap 7. The water that has flowed into the door sill gap 7 contacts the door side expansion portion 803 and the sill side expansion portion 805. The water that has contacted the door side expansion portion 803 and the sill side expansion portion 805 is absorbed by the door side expansion portion 803 and the sill side expansion portion 805. The door side expansion portion 803 and the sill side expansion portion 805 that have absorbed water expand.

[0071] When the door side expansion portion 803 and the sill side expansion portion 805 absorb water and expand, the door side closing member 801 and the sill side closing member 804 block the door sill gap 7. By the door side closing member 801 and the sill side closing member 804 blocking the door sill gap 7, it is possible to suppress the water that has entered the door sill gap 7 from entering the hoistway 9. As a result, it is possible to suppress the water that has flowed into the landing 5 from entering the hoistway 9.

[0072] A part of the water that has entered the threshold gap 7 falls through the through-hole 603. The water that has fallen from the through-hole 603 is stored in the water storage tank 124. As a result, the floating member 123 rises, and the restricting member 121 moves from the storage position to the restricting position. As a result, the door-side closing member 801 and the threshold-side closing member 804 are restricted by the restricting member 121 from moving toward the hoistway 9 side.

[0073] Other configurations of the elevator hoistway flooding suppression device according to the fourth embodiment are the same as those of the elevator hoistway flooding suppression device according to the first, second, or third embodiment.

[0074] As described above, the elevator hoistway flooding suppression device according to the fourth embodiment includes the movement restricting device 12. According to this configuration, when water flows into the landing 5, the threshold-side closing member 804 closes the threshold gap 7 together with the landing door 3, and the movement restricting device 12 restricts the door-side closing member 801 and the threshold-side closing member 804 from moving toward the hoistway 9 side. Therefore, the door-side closing member 801 and the threshold-side closing member 804 that close the threshold gap 7 are prevented from being washed into the hoistway 9 by the flow of water. As a result, it is possible to more reliably prevent the water that has flowed into the landing 5 from entering the hoistway 9.

Description of Reference Numerals

[0075] 1 Landing entrance, 2 Landing three-sided frame, 3 Landing door, 4 Shoe, 5 Landing, 6 Landing threshold, 7 Threshold gap, 8 Threshold gap closing device, 9 Hoistway, 10 Door vertical frame gap, 11 Door vertical frame gap closing device, 12 Movement restricting device, 111 Vertical frame side closing member, 112 Vertical frame side expansion part, 121 Restricting member, 122 Driving device, 123 Floating member, 124 Water storage tank, 201 Vertical frame, 202 Upper frame, 203 Recess, 601 Threshold groove, 602 Recess, 603 Through-hole, 801 Door side closing member, 802 Water stop part, 803 Door side expansion part, 804 Threshold side closing member, 805 Threshold side expansion part.

Claims

1. An elevator hoistway flooding prevention device having a water absorption expansion function which is a function of expanding by absorbing water, and comprising a door sill gap closing device that closes the door sill gap, which is the gap between the landing door and the landing sill, by absorbing water and expanding.

2. The door sill gap closing device has a door-side closing member provided on the landing door, The door-side closing member includes a door-side expansion portion having the water absorption expansion function, The elevator hoistway flooding prevention device according to claim 1, wherein when the door-side expansion portion absorbs water and expands, the door-side closing member contacts the landing sill to close the door sill gap.

3. The door sill gap closing device has a sill-side closing member provided on the landing sill, The sill-side closing member includes a sill-side expansion portion having the water absorption expansion function, The elevator hoistway flooding prevention device according to claim 1 or claim 2, wherein when the sill-side expansion portion absorbs water and expands, the sill-side closing member contacts the landing door to close the door sill gap.

4. The elevator hoistway flooding prevention device according to any one of claims 1 to 3, further comprising a movement restriction device provided on the hoistway side of the door sill gap closing device and restricting the movement of the door sill gap closing device that closes the door sill gap to the hoistway side.

5. The door sill gap closing device has a sill-side closing member provided on the landing sill, The sill-side closing member includes a sill-side expansion portion having the water absorption expansion function, The elevator hoistway flooding prevention device according to claim 2, wherein when the sill-side expansion portion absorbs water and expands, the sill-side closing member contacts the landing door to close the door sill gap and the sill-side closing member restricts the movement of the door-side closing member to the hoistway side.

6. The elevator hoistway flooding prevention device according to any one of claims 1 to 5, further comprising a door vertical frame gap closing device having the water absorption expansion function and closing the lower part of the door vertical frame gap, which is the gap between the landing door and the vertical frame of the three-sided frame, by absorbing water and expanding.

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