Landing door opening warning device for elevator

Abstract

To provide means capable of visually warning a passenger when only a landing door is opened at a floor where a car is yet to land.SOLUTION: A landing door opening warning device 1 for an elevator in which a landing door 35 for opening / closing a landing opening 32 is installed comprises: a laser irradiator 40 that is provided in the periphery of the landing opening 32 and applies a laser 41 so as to cross the landing opening 32; and a warning control unit 42 that detects opening of the landing door 35 of a floor 30 where a car 20 is yet to land, and causes the laser irradiator 40 to apply the laser 41 to a door opening, thereby issuing a warning on an opening of the landing door 35.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] In an elevator, a car moves up and down within a hoistway. When the car lands on each floor with a landing, the car door and landing door open, forming a boarding / alighting entrance connecting the landing and the car, allowing passengers to board and alight. The car door and landing door of the elevator are configured to engage with each other, and the elevator is equipped with a so-called interlock device that opens and closes the landing door in conjunction with the opening and closing of the car door (see Patent Document 1). During normal elevator operation, this interlock device prevents a situation in which only the landing door is opened at a floor where the car has not landed, allowing passengers to safely board and alight the elevator through the boarding / alighting entrance.

[0003] On the other hand, during maintenance and inspection, maintenance personnel may open only the hall door when the car is not yet on the floor, and perform maintenance on the hall through the hall opening adjacent to the elevator shaft. As a safety measure for this purpose, a safety device that hangs a partition curtain to block the hall opening is known (see Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7204051 [Patent Document 2] Patent Publication No. 2012-206843 Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology disclosed in Patent Document 1, the tip of a latch rotatably attached to the landing door engages with a latch fixed to the landing door frame, thereby locking the landing door; when the car lands at a predetermined floor and the car door opens, a member supported by the car door rotates the landing door latch, causing the tip of the latch to disengage from the latch, thereby unlocking the landing door. However, if the latch physically disengages from the latch due to an earthquake or other event, there is a risk that the landing door will open without being linked to the opening of the car door. The technology disclosed in Patent Document 2 assumes that a maintenance worker will install a safety device during maintenance and inspection, and does not take measures to deal with the situation in which the landing door opens at a floor where the car is not landed, other than during maintenance and inspection. [Means for solving the problem]

[0006] The elevator landing door opening warning device of the present invention is characterized in that, in an elevator equipped with landing doors that open and close the landing opening, it comprises: a laser illuminator that is provided around the landing opening and irradiates a laser across the landing opening; and a warning control device that detects that a landing door of a floor where the elevator car has not yet landed has opened, and causes the laser illuminator to irradiate a laser onto the door opening to warn of the landing door opening. [Effects of the Invention]

[0007] According to the present invention, when only the landing door is opened at a floor where the elevator car has not yet landed, a warning can be displayed at the landing opening, thereby visually alerting passengers. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram illustrating a schematic configuration for explaining an elevator mechanism. [Figure 2] 1 is an overall front view for explaining a usage form of a hall door opening warning device according to an embodiment; [Figure 3] 3 is a cross-sectional view taken along the line AA in FIG. 2 for explaining a usage form of the landing door opening warning device which is an example of the embodiment. FIG. [Figure 4] 1 is a block diagram showing a configuration example of a hall door opening warning device according to an embodiment; [Figure 5] FIG. 2 is a flow chart showing a flow of laser irradiation in the hall door opening warning device according to an embodiment. [Figure 6] FIG. 10 is a block diagram showing a configuration example of a hall door opening warning device according to another embodiment. [Figure 7] FIG. 10 is a flowchart showing a flow of laser irradiation in a hall door opening warning device that is another example of an embodiment. [Figure 8] FIG. 10 is an overall front view for explaining a usage form of a landing door opening warning device that is another example of an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below are merely examples, and the present invention is not limited to the following embodiments. Figure 1 is a diagram showing a schematic configuration for explaining an elevator mechanism.

[0010] As shown in Figure 1, an elevator operates by having a hoist 11 installed above a long vertical space called a hoistway 10 wind up or pay out a wire rope 12, causing a car 20 connected to one end of the wire rope 12 to ascend and descend up and down the hoistway 10, allowing passengers (not shown) to travel between floors 30, which will be described later. A counterweight 13 is connected to the other end of the wire rope 12 opposite the car 20, and has the function of balancing the load acting on both sides of the hoist 11 between the car 20 and the hoist 11.

[0011] The car 20 includes a car door 21. The car door 21 is a door that allows passengers to get on and off at each floor 30, which will be described later, and is configured to engage with a landing door 35, which will be described later.

[0012] A floor 30 is a floor on each floor of a building where an elevator is installed, and when the elevator car 20 stops at a floor 30, it is called landing. Each floor 30 is provided with a landing 31 where passengers get on and off, and the landing 31 has a landing opening 32 and a landing door 35.

[0013] The landing opening 32 is an opening provided in the landing 31 so that passengers can move between the elevator car 20 that has landed on the floor 30 having the landing 31 and the landing 31. The size of the landing opening 32 is the same as the size of the opening of the car door 21 of the elevator car 20.

[0014] A three-sided jamb 33 is provided above, to the right, and to the left of the landing opening 32 so as to surround it on three sides. A landing wall 34, which is a wall that separates the hoistway 10 from the landing 31, is arranged around the three-sided jamb 33. A hanger rail (not shown) is provided on the hoistway 10 side of the upper frame of the three-sided jamb 33, and a landing door 35 is hung from the hanger rail. The landing door 35 hung from the hanger rail opens and closes the landing opening 32 in the width direction along the inner wall surface of the hoistway 10 on the landing 31 side.

[0015] The landing door 35 is equipped with a well-known interlock device (not shown). During normal operation, the tip of a latch (not shown) rotatably attached to the landing door 35 engages with a latch (not shown) fixed to a landing door frame (not shown), thereby keeping the landing door 35 in a closed and locked state. When the car 20 lands on the floor 30 and the car door 21 opens, a member (not shown) supported by the car door 21 rotates the latch of the landing door 35, and the tip of the latch disengages from the latch, thereby unlocking the interlock device of the landing door 35 and opening the landing door 35. The landing door 35 opens in conjunction with the opening of the car door 21, thereby forming a boarding / alighting opening (not shown) connecting the car 20 and the landing opening 32 of the landing 31 at each floor 30.

[0016] On the other hand, if the latch of the landing door 35 is physically released from the latch due to an earthquake or the like, there is a risk of an abnormal opening occurring at a floor 30 where the car 20 has not landed, in which only the landing door 35 opens without linking with the car door 21.

[0017] During maintenance and inspection, etc., it may be necessary to open the hall door 35 at a floor 30 where the elevator car 20 has not landed. In this case, a maintenance worker inserts a key into a key insertion portion (not shown) provided on the hall 31 side of the hall door 35, unlocks the hall door 35, and manually opens the hall door 35.

[0018] Details of the irradiation of the laser 41 by the laser irradiator 40 will be described with reference to Figures 2 and 3. Figure 2 is an overall front view for explaining a usage form of a hall door opening warning device as an example of an embodiment. Figure 3 is a cross-sectional view taken along line AA in Figure 2 for explaining a usage form of a hall door opening warning device as an example of an embodiment.

[0019] As shown in Fig. 2, the landing door opening warning device 1 includes a laser illuminator 40, a laser 41, a warning control device 42, and a control cable 43. The laser illuminator 40 is a device that irradiates the laser 41, and is provided around the landing opening 32 so that the optical path of the irradiated laser 41 crosses the landing opening 32. When the landing door 35 is a double-door type with two doors, a plurality of laser illuminators 40 are preferably disposed on the hoistway 10 side of the landing door 35 so as not to interfere with components on the landing 31 side when the landing door 35 is opened or closed. The laser illuminator 40 is controlled by a warning control device 42 connected via a control cable 43, which is a cable that transmits a control signal.

[0020] The laser irradiator 40 is a device that irradiates a laser 41 having a wavelength in the visible light region (380 nm to 780 nm). A known laser irradiator can be used, but a small semiconductor laser irradiator is preferable.

[0021] The laser irradiator 40 and the warning control device 42 operate on power supplied from the commercial power supply installed in the building. The laser irradiator 40 and the warning control device 42 may have a built-in battery as a power source. If the laser irradiator 40 and the warning control device 42 have a built-in battery as a power source, the laser 41 can be irradiated even if power is not supplied from the commercial power supply due to a power outage or the like.

[0022] As the laser 41 in the visible light region, a semiconductor red visible light laser is known, but a blue, green, yellow or multicolor visible light laser may also be used.

[0023] As shown in FIG. 3, a laser 41 emitted from a laser irradiator 40 installed on the elevator shaft 10 side of the landing door 35 crosses the elevator shaft 10 side of the landing opening 32, passes through the elevator shaft 10 side of the opposing landing door 35 where the laser irradiator 40 is not installed, and travels straight to the wall of the elevator shaft 10.

[0024] The process of irradiating the laser 41 will be described with reference to Fig. 4. Fig. 4 is a block diagram showing an example of the configuration of a hall door opening warning device as an example of an embodiment.

[0025] As shown in FIG. 4, a warning control device 42 constituting the hall door opening warning device 1 includes a hall door opening detection unit 44 and a laser control unit 45, is connected to the laser irradiator 40, and controls the operation of the laser irradiator 40.

[0026] The landing door opening detection unit 44 has a function of detecting that the landing door 35 of a floor 30 on which the car 20 has not landed has opened, based on the detection values ​​of a plurality of sensors (not shown) provided at various locations in the elevator. When the landing door opening detection unit 44 detects that the landing door 35 of a floor 30 on which the car 20 has not landed has opened, the landing door opening detection unit 44 inputs a signal (hereinafter referred to as a landing door opening detection signal) that detects that the landing door 35 of the floor 30 on which the car 20 has not landed has opened to the laser control unit 45.

[0027] When the laser control unit 45 receives the landing door opening detection signal from the landing door opening detection unit 44, it transmits a signal to the laser illuminator 40 to instruct it to irradiate the laser 41. As a result, the laser illuminator 40 irradiates the laser 41 so as to cross the landing opening 32.

[0028] A specific example of control by the warning control device 42 will be described with reference to Fig. 5. Fig. 5 is a flow chart showing the flow of laser irradiation in a hall door opening warning device that is one example of an embodiment.

[0029] The laser control unit 45 monitors whether or not a hall door opening detection signal is input from the hall door opening detection unit 44 constituting the warning control device 42, and if the hall door opening detection signal is input (S1 Yes), the process proceeds to S2. If the hall door opening detection signal is not input, the laser 41 is not irradiated and the process ends (S1 No).

[0030] When the hall door opening detection signal is input to the laser control unit 45, the laser control unit 45 transmits a signal to the laser irradiator 40 to instruct it to irradiate the laser 41, and causes the laser 41 to irradiate (S2).

[0031] When the opening of the landing door 35 of a floor 30 where the car 20 has not landed is cleared, the landing door opening detection unit 44 stops the input of the landing door opening detection signal to the laser control unit 45 based on the detection values ​​of a plurality of sensors (not shown) provided at various locations in the elevator, etc. The laser control unit 45 monitors whether or not the input of the landing door opening detection signal from the landing door opening detection unit 44 has been received, and if the input of the landing door opening detection signal has been received (S3 Yes), the process proceeds to S4. If the input of the landing door opening detection signal continues, the laser 41 continues to be irradiated (S3 No).

[0032] When the input of the landing door opening detection signal from the landing door opening detection unit 44 is stopped, the laser control unit 45 stops transmitting the signal instructing the laser irradiator 40 to irradiate the laser 41. This ends the irradiation of the laser 41, and the series of processes ends (S4).

[0033] The process of irradiating the laser 41 when the mode is shifted to the maintenance mode will be described with reference to Fig. 6. Fig. 6 is a block diagram showing an example of the configuration of a hall door opening warning device that is another example of the embodiment.

[0034] The landing door opening warning device 1 irradiates a laser 41 across the landing opening 32 when the landing door 35 of a floor 30 on which the car 20 has not landed opens. Here, for example, during maintenance and inspection, even if a maintenance worker manually opens the landing door 35 at a floor 30 on which the car 20 has not landed, the landing door opening detection unit 44 detects the opening of the landing door 35, and therefore the laser 41 irradiates the landing opening 32. Generally, during maintenance and inspection, it is preferable that the laser 41 not be irradiated because it interferes with maintenance work.

[0035] 6, the laser control unit 45 constituting the warning control device 42 receives a maintenance operation signal input by a maintenance technician during maintenance inspection from the maintenance operation unit 46, and stops sending a signal to the laser irradiator 40 to instruct it to irradiate the laser 41. This causes the irradiation of the laser 41 to end.

[0036] A specific example of control by the warning control device 42 when the device has transitioned to the maintenance mode will be described with reference to Fig. 7. Fig. 7 is a flow chart showing the flow of laser irradiation in a hall door opening warning device that is another example of the embodiment.

[0037] First, the laser control unit 45 monitors whether or not a hall door opening detection signal has been input from the hall door opening detection unit 44 constituting the warning control device 42, and if the hall door opening detection signal has been input (S10 Yes), the process proceeds to S11. If the hall door opening detection signal has not been input, the laser 41 is not irradiated (S10 No).

[0038] Next, the laser control unit 45 monitors whether or not a maintenance operation signal has been input from the maintenance operation unit 46, and if a maintenance operation signal has been input (S11 Yes), it does not irradiate the laser 41. If a maintenance operation signal has not been input, the process proceeds to S12 (S11 No).

[0039] If the maintenance operation signal is not input to the laser control unit 45, the laser control unit 45 transmits a signal to the laser irradiator 40 to instruct it to irradiate the laser 41, and causes the laser 41 to irradiate (S12).

[0040] When the opening of the landing door 35 of a floor 30 where the car 20 has not landed is cleared, the landing door opening detection unit 44 stops the input of the landing door opening detection signal to the laser control unit 45 based on the detection values ​​of a plurality of sensors (not shown) provided at various locations in the elevator, etc. The laser control unit 45 monitors whether or not the input of the landing door opening detection signal from the landing door opening detection unit 44 has been received, and if the input of the landing door opening detection signal has been received (S13 Yes), the process proceeds to S14. If the input of the landing door opening detection signal continues, the laser 41 continues to be irradiated (S13 No).

[0041] When the input of the landing door opening detection signal from the landing door opening detection unit 44 is stopped, the laser control unit 45 stops transmitting the signal instructing the laser irradiator 40 to irradiate the laser 41. This ends the irradiation of the laser 41, and the series of processes ends (S14).

[0042] The case where a maintenance operation signal is input from the maintenance operation unit 46 is not limited to the time of maintenance inspection. For example, in the case of an abnormal opening, such as when the landing door 35 of a floor 30 where the car 20 has not landed opens due to an earthquake or the like, when a maintenance worker arrives at the site and starts recovery work, the maintenance operation signal is input from the maintenance operation unit 46 to the laser control unit 45 after taking safety measures such as installing a safety fence, and the recovery work can be started after terminating the irradiation of the laser 41.

[0043] As described above, by using the hall door opening warning device 1 having the above-described configuration, when only the hall door 35 is opened at a floor 30 where the elevator car 20 has not landed, the laser 41 can be irradiated onto the hall opening 32, thereby visually alerting passengers.

[0044] The above embodiment can be appropriately modified in design without impairing the object of the present invention. For example, the landing door 35 may be a four-door double-swing type, or in some cases, a one-door single-swing type or a two-door single-swing type.

[0045] The installation location of the laser irradiator 40 is not limited to the elevator shaft 10 side of the landing door 35, but may be installed on the inner wall of the elevator shaft 10 or inside the landing door 35. When the laser irradiator 40 is installed inside the landing door 35, an exit window (not shown) corresponding to the optical path of the laser 41 irradiated from the laser irradiator 40 is formed in the door stop surface of the landing door 35 on which the laser irradiator 40 is installed.

[0046] As shown in FIG. 8, the laser illuminators 40 are installed at the top and bottom of the landing doors 35, and the upper laser illuminator 40 is arranged to irradiate the laser 41 toward the bottom of the opposing landing door 35, and the lower laser illuminator 40 is arranged to irradiate the laser 41 toward the top of the opposing landing door 35, making it possible to irradiate the laser 41 diagonally across the left and right sides of the landing opening 32. [Explanation of symbols]

[0047] 1 Platform door opening warning device, 10 elevator shaft, 11 hoist, 12 wire rope, 13 counterweight, 20 car, 21 car door, 30 floor, 31 platform, 32 platform opening, 33 jamb, 34 platform wall, 35 platform door, 40 laser irradiator, 41 laser, 42 warning control device, 43 control cable, 44 platform door opening detection unit, 45 laser control unit, 46 maintenance operation unit

Claims

1. A hall door opening warning device for an elevator in which a hall door that opens and closes a hall opening is installed, A laser irradiator that is provided in the periphery of the landing opening and irradiates a laser so as to cross the landing opening; a warning control device that detects that a landing door of a floor on which the elevator car has not landed has opened and causes the laser irradiator to irradiate a laser onto the door opening to warn of the opening of the landing door; An elevator landing door opening warning device comprising:

2. 2. The elevator hall door opening warning device according to claim 1, wherein the laser irradiator and the warning control device have built-in batteries as power sources.

3. 2. The elevator hall door opening warning device according to claim 1, wherein the warning control device controls the laser irradiator so as not to irradiate a laser when the elevator has transitioned to a hall door maintenance mode.

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