JP2013060248A - Door opening/closing device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door-opening/closing device of an elevator, which can prevent an opening/closing door from closing while passengers are getting off.SOLUTION: The door opening/closing device of the elevator of the embodiment is provided with a plurality of load detectors and controllers. The load detectors can detect a load posed by the passengers in a car of the elevator, and the plurality of them are provided on the floor of the car. In Step S10, the controller extracts the passenger approaching the door based on a result detected by the plurality of load detectors after the car reached the floor and the door opened. In Step S11, the controller estimates the moving speed of the extracted passenger approaching the door. In Step S13, the controller delays closing of the door based on the estimated moving speed.

Description

  Embodiments described herein relate generally to an elevator door opening and closing device.

  2. Description of the Related Art Conventionally, an elevator moves a passenger car between arbitrary floors by moving a car that accommodates passengers in a hoistway, thereby moving the passengers between landings on arbitrary floors. Then, when the car reaches the arbitrary landing site, the elevator opens the opening / closing door of the car and makes passengers get on and off.

JP 2002-121964 A JP 2009-190847 A

  By the way, in the prior art, when a predetermined time elapses after the opening / closing door is opened, there is a possibility that the opening / closing door may be closed after the predetermined time has elapsed even if the passenger tries to get off to close the opening / closing door.

  Therefore, the problem to be solved by the present invention is to provide an elevator door opening / closing device capable of preventing the opening / closing door from being closed while a passenger is getting off.

  The elevator door opening and closing device according to the embodiment includes a plurality of load detection units, extraction means, speed estimation means, and door control means. A plurality of load detection units can detect the load of passengers in the car and are provided on the floor of the car. The extraction means extracts passengers approaching the open / close door based on the results detected by the plurality of load detectors after the car has landed and the open / close door has been opened. The speed estimation means estimates a moving speed of the passenger approaching the open / close door extracted by the extraction means. The door control means delays closing of the open / close door based on the moving speed estimated by the speed estimation means.

FIG. 1 is a front view schematically showing the overall configuration of the elevator according to the embodiment. FIG. 2 is a front view of the entrance / exit from the inside of the cab of the elevator car according to the embodiment. FIG. 3 is a perspective view of a pressure detector of the elevator door opening and closing device according to the embodiment. FIG. 4 is a perspective view illustrating a state in which the pressure detector illustrated in FIG. 3 is stepped on by a passenger. FIG. 5 is a front view of the elevator hall according to the embodiment. FIG. 6 is a block diagram illustrating a configuration of an elevator door opening and closing device according to the embodiment. FIG. 7 is a flowchart illustrating an example of processing of the control unit of the elevator door opening and closing device according to the embodiment. FIG. 8 is another front view of the entrance / exit from the inside of the cab of the elevator car according to the embodiment. FIG. 9 is a flowchart illustrating an example of processing of the control unit of the elevator door opening and closing device according to the modified example of the embodiment.

[Embodiment]
FIG. 1 is a front view schematically showing the overall configuration of the elevator according to the embodiment. FIG. 2 is a front view of the elevator car according to the embodiment as viewed from the inside of the passenger compartment of the elevator. FIG. FIG. 4 is a perspective view showing a state in which the pressure detector shown in FIG. 3 is stepped on by a passenger, and FIG. 5 is an elevator according to the embodiment. FIG. 6 is a block diagram showing a configuration of an elevator door opening / closing device according to the embodiment, and FIG. 7 is a flowchart showing an example of processing of a control unit of the elevator door opening / closing device according to the embodiment. FIG. 8 is another front view of the entrance / exit from the inside of the cab of the elevator car according to the embodiment.

  The elevator 1 of this embodiment shown in FIG. 1 is installed in a hoistway of a building (also called a building), and is a destination floor corresponding to each floor of the operation panel 22 (shown in FIG. 2) in the car 2. The destination floor is registered by the operation of the button 27, and the passenger is moved to the desired floor of the building on the basis of the call registration by the operation of the call buttons 25 and 26 on the operation panel 24 (shown in FIG. 5) provided at the landing 23 on each floor. Carry.

  A destination floor button 27 provided on the operation panel 22 is provided corresponding to each floor of the building. The destination floor button 27 corresponding to the floor that the passenger in the car 2 desires to move is operated. When the destination floor button 27 is operated, the operation panel 22 registers a destination floor indicating that the destination floor button 27 has been operated in the elevator control unit 9.

  As shown in FIG. 5, the operation panel 24 is provided with an upper floor call button 25 and a lower floor call button 26 in order from the top. The upper floor call button 25 is used when a passenger located at the landing 23 moves to the landing 23 on the upper floor. The lower floor call button 26 is used when a passenger located at the landing 23 moves to the lower floor landing 23. When the call buttons 25 and 26 are operated, the operation panel 24 registers call registration indicating that these buttons 25 and 26 are operated in the elevator control unit 9.

  The hoistway is provided over a plurality of floors of the building, and extends linearly along the vertical direction. Each floor, which is the elevator stop floor inside the hoistway, is provided with a car landing detection device 8 (shown in FIG. 1) for detecting that the car 2 has stopped at a predetermined landing position on each floor. ing. When each car landing detection device 8 detects that the car 2 has stopped at the landing position on each floor by a detection plate (not shown) provided on the car 2, the landing position detection signal is sent to the elevator controller 9. Output toward.

  As shown in FIG. 1, the elevator 1 includes a landing door 28 (shown in FIG. 5) as an opening / closing door, a pair of car guide rails 3, a car 2, a counterweight 4, and a pair of weights. A guide rail 5, a main rope 6, a drive mechanism 7, a compensation device 10, an emergency stop device 11, an elevator control unit 9, and a door opening / closing device 29 (shown in FIG. 6) are provided.

  A landing door 28 is provided at each landing 23 of the building. The landing door 28 opens and closes the doorway 31 (shown in FIG. 5) provided in each landing 23 of the building by the driving force of the door motor 30 (shown in FIG. 6).

  The car guide rail 3 extends linearly and is provided in parallel with the vertical direction. The car guide rails 3 are provided in the hoistway in a parallel state with a space therebetween. The car guide rails 3 position the car 2 between them and support the car 2 so that it can be raised and lowered in the vertical direction.

  The car 2 is accommodated in the hoistway so as to be movable in the vertical direction. The car 2 includes a car frame 12 and a car room 13 for accommodating passengers. The car frame 12 is formed in a frame shape having a size that can be positioned between the pair of car guide rails 3. The car frame 12 includes a pair of a lower beam 14 parallel to the horizontal direction, an upper beam 15 provided parallel to the horizontal direction and above the lower beam 14, and both ends of the lower beam 14 and the upper beam 15 connected to each other. And side beams 16. The lower beam 14 and the upper beam 15 are horizontal beams.

  The car room 13 is formed in a box shape provided with a car door 32 as an opening / closing door shown in FIG. 2, and can accommodate passengers and the like inside. The car door 32 opens and closes an entrance / exit 34 (shown in FIG. 1) provided in the car 2 by the driving force of a door motor 33 (shown in FIG. 6). The car room 13 is attached to the car frame 12 in a state of being overlapped on the lower beam 14 and sandwiched between the pair of side beams 16. The car room 13 is supported by the car frame 12. An operation panel 22 for performing various operations of the elevator 1 is provided in the cab 13. Further, the car 2 is provided with an open / close detection sensor for detecting an open / close operation of the open / close door. The opening / closing detection sensor detects the opening / closing operation of the opening / closing door, and outputs the detected result to the elevator control unit 9.

  The counterweight 4 is accommodated in the hoistway so as to be movable in the vertical direction.

  The weight guide rail 5 extends linearly and is provided in parallel with the vertical direction. The weight guide rails 5 are provided in the hoistway in a parallel state with a space therebetween. The weight guide rails 5 position the counter weight 4 between them and support the counter weight 4 so as to be movable up and down in the vertical direction.

  The main rope 6 has a car 2 fixed to one end and a counterweight 4 fixed to the other end. The main rope 6 is stretched over a drive sheave 17 of the drive mechanism 7 so that the car 2 and the counterweight 4 are moved up and down in opposite directions. That is, the elevator 1 is a so-called elevator type elevator. Thus, the main rope 6 moves up and down the cage 2 and the counterweight 4 in a fishing bottle manner by being moved by the hoisting machine.

  As shown in FIG. 1, the drive mechanism 7 is provided in, for example, a machine room provided in the upper part of the hoistway or an upper part in the hoistway, and is wound up by a known hoisting machine and a main rope 6. A drive sheave 17 that is rotationally driven by the machine, a brake (not shown), and a rotary encoder are provided. The brake is, for example, an electromagnetic brake, and its operation is controlled by the elevator control unit 9 to either a braking state in which the hoisting machine is braked or an open state in which the hoisting machine is opened. The brake is in a braking state when the car 2 reaches each floor and is in an open state while the car 2 is raised and lowered. The rotary encoder detects the rotation of the drive sheave 17, detects the rotation speed of the drive sheave 17 as speed information related to the speed of the car 2, and outputs the detected result toward the elevator control unit 9. . The drive mechanism 7 moves the main rope 6 in the hoistway and moves the car 2 and the counterweight 4 up and down by rotating the drive sheave 17 by the hoisting machine.

  The compensation device 10 includes a compensation rope 19 having one end attached to the car 2 and the other end attached to the counterweight 4, and a compensation sheave 20 hung on the compensation rope 19. The compensation device 10 suppresses vibration of the car 2 and the counterweight 4 that are being lifted and cancels the weight of the main rope 6 when the car 2 and the counterweight 4 are lifted and lowered in the hoistway.

  As shown in FIG. 1, the emergency stop device 11 includes a pair of emergency stop mechanisms 21 attached to the bottom surface of the car 2. The emergency stop device 11 causes the emergency stop mechanism 21 to stop the car 2 with respect to the car guide rail 3 when the car 2 descends at a speed higher than a predetermined speed.

  The elevator control unit 9 is an arithmetic unit that is provided in the machine room or the upper part of the hoistway described above and includes a RAM, a ROM, a CPU, an input / output port, and a storage device (not shown). As shown in FIG. 1, a tail cord 18 having one end attached to the car 2 is connected to the elevator controller 9. The tail cord 18 is a cord bundled with power lines and transmission lines, and connects the operation panel 22 in the car 2 and the elevator control unit 9. The elevator control unit 9 is also connected to the destination floor button 27 of the operation panel 22 of the car 2, the call buttons 25 and 26 of the operation panel 24 of the landing 23 on each floor, the drive mechanism 7, the door motors 30 and 33, and the like. Controls the entire elevator 1. In particular, the elevator control unit 9 closes the doors 28 and 32 when a predetermined time has elapsed after the doors 28 and 32 are once opened.

  As shown in FIG. 6, the door opening / closing device 29 includes a load detector 35 as a plurality of load detection units, a display unit 36 as a display unit, and a control unit 37. As shown in FIGS. 2 and 8, the load detector 35 is provided on the floor of the car 2 with the outer edges closely contacting each other. The load detector 35 has a square shape in plan view. A plurality of load detectors 35 cover the floor of the car 2. As shown in FIGS. 3 and 4, the load detector 35 includes a plurality of first loop electrodes 38, a plurality of second loop electrodes 39, an elastic sheet 40, and a metal sheet 41.

  The plurality of first loop electrodes 38 are provided in parallel at intervals. Electric power is supplied to the first loop electrode 38 from a power source. The plurality of second loop electrodes 39 are provided in parallel at intervals. The second loop electrode 39 is overlaid on the first loop electrode 38 with a space from the first loop electrode 38. The longitudinal direction of the first loop electrode 38 and the longitudinal direction of the second loop electrode 39 are orthogonal to each other. A plurality of locations where the first loop electrode 38 and the second loop electrode 39 intersect are provided in one load detector 35. The distance between the locations where the first loop electrode 38 and the second loop electrode 39 intersect is narrower by about 5 cm than the width of a typical passenger's foot. The first loop electrode 38 and the second loop electrode 39 are provided so that the relative position does not change (the relative position is constant) even when a passenger rides on the load detector 35. The second loop electrode 39 is connected to the control unit 37.

  The elastic sheet 40 is made of a synthetic resin having elasticity such as rubber, and is formed in a thin flat plate shape. The elastic sheet 40 is overlaid on the second loop electrode 39. When the elastic sheet 40 is ridden by a passenger, as shown in FIG. 4, the ridden portion is elastically deformed in a direction in which the thickness is reduced by the load of the passenger. The metal sheet 41 is made of a conductive metal such as an aluminum alloy, and is formed in a thin flat plate shape. The metal sheet 41 is overlaid on the elastic sheet 40. When the metal sheet 41 is ridden by a passenger, as shown in FIG. 4, a portion ridden by the passenger along the surface of the elastic sheet 40 is recessed (curved) due to elastic deformation of the elastic sheet 40. Elastically deforms.

  In the load detector 35 described above, the current flowing through the first loop electrode 38 also flows through the second loop electrode 39 due to the metal sheet 41. At this time, the degree of coupling between the first loop electrode 38 and the second loop electrode 39 varies depending on the distance between the metal sheet 41 and the second loop electrode 39, so that a passenger rides on the load detector 35. When the elastic sheet 40 is elastically deformed so as to be thin, the value of the current flowing in the second loop electrode 39 changes according to the moving distance of the metal sheet 41. The load detector 35 connects the second loop electrode 39 to the control unit 37, and outputs the value of the current flowing in the second loop electrode 39 toward the control unit 37, so that the passenger in the car 2 The load can be detected and the detected result is output to the control unit 37. The load detector 35 outputs information corresponding to the above-described load at a location where each of the second loop electrodes 39 intersects the plurality of first loop electrodes 38 toward the control unit 37.

  As shown in FIG. 5, the display unit 36 is provided at the landing 23 on each floor of the building. In the present embodiment, the display unit 36 is provided above the operation panel 24 of the landing 23. The display unit 36 includes a display 42 and an audio output unit 43. The display device 42 is configured by a device capable of displaying information, such as a known liquid crystal display and a fluorescent display tube. The display 42 displays information as instructed by the control unit 37. The sound output unit 43 includes a known speaker and outputs sound in accordance with a command from the control unit 37. In the present embodiment, the display device 42 is disposed above the audio output unit 43. The display unit 36 configured as described above displays that the control unit 37 delayed the closing of the doors 28 and 32 based on the moving speed of the passenger in step S13 described later.

  The control unit 37 is an arithmetic unit that is provided in the operation panel 22 of the car 2 and includes a RAM, a ROM, a CPU, a timer, an input / output port, and a storage device (not shown). The control unit 37 is provided below the destination floor button 27 as shown in FIG. The control unit 37 is connected to the plurality of load detectors 35 and is connected to the display unit 36 and the elevator control unit 9 via the tail cord 18 to control the entire door opening / closing device 29. For example, the control unit 37 stores in advance the coordinates of a location where the loop electrodes 38 and 39 of each load detector 35 intersect with each other with the center of the entrance / exit 34 as the origin.

  When the elevator 1 is in operation, the control unit 37 repeatedly executes the flowchart illustrated in FIG. In step S1 of the flowchart shown in FIG. 7, the control unit 37 first determines whether the doors 28 and 32 are closed and the elevator control unit 9 has registered a destination floor from the operation panel 22 in the car 2. If it is determined and it is determined that there is, the process proceeds to step S2. As described above, when it is determined that there is a destination floor registration from the operation panel 22 in the car 2, the control unit 37 determines that a passenger is in the car 2, and determines that there is no destination floor registration. It is determined that no passenger is in the car 2.

  In step S2, the control unit 37 determines whether or not only one destination floor registration is registered in the elevator control unit 9 from the operation panel 22 in the car 2, and only one destination floor registration is registered. If it is determined that there are two or more destination floors registered, the process proceeds to step S4. Thus, in step S2, when only one destination floor registration from the operation panel 22 in the elevator car 2 of the elevator controller 9 is registered, the control unit 37 has one passenger in the elevator car 2, for example. If it is determined that there are a small number and two or more destination floor registrations are registered, it is determined that there are a large number of passengers in the car 2, for example, two or more.

  Such step S2 serves as a determination means for determining whether only one destination floor or a plurality of destination floors are registered from the operation panel 22 in the car 2. Further, when step S2 determines that only one destination floor is registered from the operation panel 22, some load detectors 35 near the car door 32 among the plurality of load detectors 35 detect it. Based on the result, passengers approaching the car door 32 are extracted in step S10 to be described later, and when it is determined that a plurality of destination floors are registered from the operation panel 22, the car among the plurality of load detectors 35. Based on the result detected by more load detectors 35 than when only one destination floor is registered, including a part of load detectors 35 near the door 32, the car is used in step S10. Detection range changing means for extracting passengers approaching the door 32 is provided.

  In step S3, the control unit 37 sets the first of the load detectors 35 (shown by dense parallel diagonal lines in FIG. 8) of the plurality of load detectors 35 near the doorway 34, that is, the car door 32. Power from the power source is applied to the loop electrode 38. In the present embodiment, in step S3, the load is applied to the first loop electrode 38 of the load detector 35 that is half of the load detector 35 near the car door 32. In step S <b> 4, the control unit 37 applies power from the power source to the first loop electrodes 38 of all the load detectors 35. Thus, in step S4, a part of the load detectors 35 near the car door 32 to be applied to the first loop electrode 38 in step S3 are included, and more first loop electrodes 38 of the load detectors 35 than in step S3. Apply to.

  In step S <b> 5, the control unit 37 extracts passengers in the car 2 based on the current value of the second loop electrode 39 of the load detector 35 applied to the first loop electrode 38. The control unit 37 determines that the load detector 35 in which the current value of the second loop electrode 39 is equal to or greater than a predetermined value is detecting a load, and the current value is set to a predetermined value. It is determined that the lower load detector 35 has not detected a load. The control unit 37 determines that a passenger is present on the above-described intersection of the load detector 35 that detects the load, and the current value of the second loop electrode 39 is equal to or greater than a predetermined value. The above-described intersecting portion of the load detector 35 is extracted as a passenger, stored, and the process proceeds to step S6. In step S6, the control unit 37 calculates an area that is adjacent to each other and surrounded by the above-described intersecting portions of the load detector 35 that detects the load as described above. After execution of the flowchart shown in FIG. 7, it is determined whether or not the predetermined area has been expanded. That is, in step S6, it is determined whether or not the area of the passenger extracted in step S5 has expanded to a predetermined area. If it is determined that one of the extracted passengers has expanded to the predetermined area, the process proceeds to step S7. If it is determined that all of the extracted passengers have not spread to the predetermined area, the process proceeds to step S8. The predetermined area is preferably set to a value that can sufficiently determine a fallen passenger because the area for detecting a standing passenger is larger than the assumed maximum foot area of the passenger. That is, the predetermined area is an area where it can be detected that the passenger in the car 2 has fallen.

  In step S7, the control unit 37 determines whether or not the passenger who exceeds the predetermined area does not change over a predetermined time after step S6 (is constant), and exceeds the predetermined time. If it does not change (if it is constant), it proceeds to step S9, and if it changes within a predetermined time (if it is not constant), it returns to step S5. Thus, the control unit 37 determines that there is an abnormality in the passenger such as the passenger in the car 2 having fallen if the passenger exceeding the predetermined area does not change for a predetermined time. In step S9, the control unit 37 commands the elevator control unit 9 so that the car 2 goes to the nearest (closest) floor platform 23, and the elevator control unit 9 causes the nearest floor platform 23. The drive mechanism 7 and the like are controlled so that the car 2 faces the car. Then, when the car 2 reaches the landing 23 on the nearest floor and the doors 28 and 32 are opened, the control unit 37 instructs the elevator control unit 9 to keep the doors 28 and 32 open. The control unit 9 controls the door motors 30 and 33 so as to keep the doors 28 and 32 open. Further, the control unit 37 displays on the display 42 of the display unit 36 provided at the landing 23 where the car 2 has landed, that the passengers in the car 2 are abnormal, and from the voice output unit 43. A voice indicating that there is an abnormality in the passengers in the car 2 is output, prompting a third party or the like to rescue the passengers in the car 2, and the flowchart is ended. In step S9, when the area where the loads of the plurality of load detectors 35 are detected exceeds a predetermined area and is constant for a predetermined time, the car 2 is moved to the nearest position. The emergency stop means for landing at the landing 23 and opening and maintaining the doors 28 and 32 is provided.

  In step S8, the control unit 37 determines whether the car 2 has landed on the desired floor 23 and whether the doors 28 and 32 are open, and the car 2 has the desired floor 23. If it is determined that the doors 28 and 32 are open, the process proceeds to step S10. If it is determined that the doors 28 and 32 are not open, step S8 is repeated. Thus, the control unit 37 repeats Step S8 until the car 2 reaches the landing 23 on the desired floor and the doors 28 and 32 are opened.

  In step S <b> 10, the control unit 37 extracts passengers approaching the doors 28 and 32 as follows, and determines whether there are passengers approaching the doors 28 and 32. For example, within a predetermined time after the doors 28 and 32 are opened, the load is detected among passengers detected by the load detector 35 (locations where the loop electrodes 38 and 39 detecting the load intersect). After the occurrence of a point where the loop electrodes 38 and 39 that are no longer detected intersect, the loop electrodes 38 and 39 that no longer detect the load within a predetermined time such as 1 second intersect. When a location where the loop electrodes 38 and 39 that have started to detect a load within a predetermined distance such as 1 m, for example, intersect, occurs, the loop electrodes 38 and 39 that no longer detect the load. It is determined that the location where the crossing and the location where the loop electrodes 38 and 39 which have started to detect the load intersect are the same passenger load, and the passenger is moving. And the control part 37 the location where the loop electrodes 38 and 39 which have started to detect the load intersect, for example, the distance from the origin of the location where the loop electrodes 38 and 39 that no longer detect the load intersect For example, when the distance from the origin is short, it is determined that the detected passenger is approaching the doors 28 and 32. Thus, the control unit 37 extracts passengers approaching the doors 28 and 32, and proceeds to step S11 if there is a passenger approaching the doors 28 and 32, and ends the flowchart if there is no passenger approaching the doors 28 and 32. Thus, step S10 is for passengers approaching the doors 28 and 32 based on the results detected by the plurality of load detectors 35 after the car 2 has landed on the desired floor and the doors 28 and 32 have opened. Extraction means for extracting.

  In step S11, the control unit 37 has a location where the loop electrodes 38, 39 that have stopped detecting the load extracted in step S10 intersect with a location where the loop electrodes 38, 39 that have started to detect the load intersect. And the time from when the load is no longer detected until the load is detected again, the moving speed of the extracted passenger is estimated to be toward the doors 28 and 32, and the process proceeds to step S12. As described above, step S11 serves as a speed estimation means for estimating the moving speed approaching the passenger doors 28 and 32 extracted in step S10.

  In step S12, the control unit 37 determines whether or not the passenger can reach the entrances 31 and 34 before the doors 28 and 32 are closed based on the moving speed of the passenger estimated in step S11. If it determines, it will complete | finish a flowchart, and if it determines with not reaching | attaining, it will progress to step S13. In step S13, the control unit 37 sets the opening time of the doors 28 and 32 until the passenger heading for the doors 28 and 32 can reach the entrances 31 and 34 based on the moving speed of the passengers estimated in step S11. Extend. Further, the control unit 37 displays information indicating that the opening time of the doors 28 and 32 has been extended on the display 42 of the display unit 36 of the landing 23 where the car 2 is landing, and also outputs a sound. The audio information is output from the unit 43, and the flowchart ends. Thus, in step S13, the doors 28 and 32 are closed so that the doors 28 and 32 are opened until the passenger can reach the entrances 31 and 34 based on the moving speed estimated in the step S11. It is a door control means that delays.

  According to the door opening and closing device 29 of the elevator 1 according to the embodiment, the doors 28 and 32 are closed so as to continue to open in step S13 based on the moving speed approaching the passenger doors 28 and 32 extracted in step S10. Therefore, it is possible to prevent the doors 28 and 32 from closing before the passengers reach the entrances 31 and 34. Therefore, it is possible to prevent the doors 28 and 32 from being closed while the passenger is getting off or before getting off. Therefore, the passenger can get on and off the car 2 safely. Further, in order to prevent the doors 28 and 32 from being closed while getting on and off, there is no need to operate the operation boards 22 and 24 in the platform 23 and the car 2. For this reason, it is possible to prevent the doors 28 and 32 from being closed unnecessarily, contribute to energy saving, and eliminate the need for the passengers to perform unnecessary operations.

  When only one destination floor is registered, passengers approaching the doors 28 and 32 are extracted based on the detection results of the load detectors 35 near the doors 28 and 32 among the plurality of load detectors 35. The movement speed of the passenger is estimated, and the closing of the doors 28 and 32 is delayed. As described above, when only one destination floor is registered, that is, when only a small number of passengers are in the car 2, a small number of passengers are generally located closer to the operation panel 22. Therefore, since the closing operation of the doors 28 and 32 is controlled based on the result detected by the minimum load detector 35, the power consumption for extracting passengers can be suppressed, contributing to energy saving. it can.

  A display unit 36 for displaying that the doors 28 and 32 are delayed from closing based on the moving speed of passengers is provided at the landing 23. For this reason, the passenger who tries to board the landing 23 knows that the doors 28 and 32 are delayed from closing based on the moving speed of the passengers, that is, the state where the doors 28 and 32 are open is extended. be able to.

  Further, when the area where the load detector 35 detects the load spreads to a predetermined area and a predetermined time elapses, the car 2 is landed on the nearest floor. In this way, the passenger 2 in the car 2 falls down due to a sudden illness or the like, and detects a state in which the passenger cannot move, and the car 2 is landed with the doors 28 and 32 open on the nearest floor. Therefore, a passenger who has fallen in the car 2 can be quickly rescued.

[Modification]
Hereinafter, modifications of the elevator door opening and closing device of the above-described embodiment will be described. Note that the same parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 9 is a flowchart illustrating an example of processing of the control unit of the elevator door opening and closing device according to the modified example of the embodiment.

  In this modification, when the control unit 37 determines in step S1 that the doors 28 and 32 are closed and the elevator control unit 9 has not registered the destination floor from the operation panel 22 in the car 2, the process proceeds to step S6a. In step S6a, the control unit 37 determines whether or not at least one load detector 35 among the plurality of load detectors 35 detects a load from a passenger, and if it detects a load, the control unit 37 proceeds to step S9a. If not detected, the process returns to step S1.

  In step S9a, the control unit 37 instructs the elevator control unit 9 so that the car 2 goes to the nearest (closest) floor platform 23, and the elevator control unit 9 causes the nearest floor platform 23 to go. The drive mechanism 7 and the like are controlled so that the car 2 faces the car. Then, when the car 2 reaches the landing 23 on the nearest floor and the doors 28 and 32 are opened, the control unit 37 instructs the elevator control unit 9 to keep the doors 28 and 32 open. The control unit 9 controls the door motors 30 and 33 so as to keep the doors 28 and 32 open.

  Further, the control unit 37 displays on the display 42 of the display unit 36 provided at the landing 23 where the car 2 has landed, that the passengers in the car 2 are abnormal, and from the voice output unit 43. A voice indicating that there is an abnormality in the passengers in the car 2 is output, prompting a third party or the like to rescue the passengers in the car 2, and the flowchart is ended. In such a step S9a, the destination floor registered from the operation panel 22 in the car 2 is zero, and at least one load detector 35 among the plurality of load detectors 35 detects the load by the passenger. In this case, an emergency stop means is provided for landing the car 2 at the nearest landing 23 and opening and maintaining the doors 28 and 32. Moreover, in this modification, the control part 37 progresses to step S8, after extracting a passenger in step S5.

  According to the door opening and closing device 29 of the elevator 1 according to the modified example, the destination floor registration from the operation panel 22 in the car 2 is zero, and at least one load detector 35 detects the load by the passenger. , Land the car 2 on the nearest floor. In this way, the passenger 2 in the car 2 falls down due to a sudden illness or the like, and detects a state in which the passenger cannot move, and the car 2 is landed with the doors 28 and 32 open on the nearest floor. Therefore, a passenger who has fallen in the car 2 can be quickly rescued.

  In the present invention, the flowchart executed by the control unit 37 may be changed as appropriate. That is, the number of load detectors 35 driven in step S3 may be changed as appropriate. Moreover, in step S6 of embodiment mentioned above, although it was determined whether the area of the extracted passenger extended to the predetermined area mentioned above, in this invention, the area of the extracted passenger exceeds a predetermined area. It may be determined whether or not. In this case, if it determines with one of the extracted passengers exceeding the predetermined area, it will progress to step S7, and if it determines with all the extracted passengers being less than the predetermined area, it will progress to step S8.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 22 Operation panel 24 Operation panel 28 Door for landing (open / close door)
29 Door opening and closing device 32 Car door (opening and closing door)
35 Load detector (load detector)
36 Display section (display means)
37 control unit S2 determination means, detection range change means S9, S9a emergency stop means S10 extraction means S11 speed estimation means S13 door control means

Claims (5)

A load detection unit capable of detecting a load by passengers in the car and provided on the floor of the car;
Extraction means for extracting passengers approaching the open / close door based on the results detected by the plurality of load detectors after the car has landed and the open / close door opened.
Speed estimating means for estimating a moving speed of the passenger that approaches the opening / closing door of the passenger extracted by the extracting means;
Door control means for delaying closing of the open / close door based on the moving speed estimated by the speed estimating means;
Characterized by comprising,
Elevator door opening and closing device. Determination means for determining whether only one destination floor is registered or a plurality of destination floors are registered from the operation panel in the car;
When the determination unit determines that only one destination floor is registered from the operation panel, based on a result detected by some load detection units near the opening / closing door among the plurality of load detection units, When the extraction means extracts passengers approaching the open / close door, and the determination means determines that a plurality of destination floors are registered from the operation panel, the load detection unit is closer to the open / close door. Detection that causes the extraction means to extract passengers approaching the open / close door based on the results detected by more load detection units than when only one destination floor is registered, including some load detection units Range changing means;
Characterized by comprising,
The elevator door opening and closing device according to claim 1. The door control means is provided with display means for displaying that the opening / closing door is delayed from closing based on the moving speed estimated by the speed estimation means. ,
The elevator door opening and closing device according to claim 1 or 2. When the load detection area of the plurality of load detection units extends to an area where it is possible to detect that the passenger has fallen and is constant for a predetermined time, the nearest car is Characterized in that it comprises emergency stop means for landing at the landing and opening and maintaining the door.
The elevator door opening and closing device according to any one of claims 1 to 3. When the destination floor registered from the operation panel in the car is zero and at least one load detecting unit among the plurality of load detecting units detects the load, Characterized in that it comprises emergency stop means for landing at the landing and opening and maintaining the door.
The elevator door opening and closing device according to any one of claims 1 to 3.

Images