JP2018070291A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator capable of eliminating drawing-in easily even when a passenger is drawn-in.SOLUTION: An elevator includes a passenger riding car, a car door provided for the car, an engagement device provided for the car door, a landing door provided in a landing and moved by being engaged with the car door via the engagement device, a self-closing device energizing the landing door in a closing direction with a self-closing force, a door opening-closing driving device driving a car door, and a door opening safety device for detecting abnormality when opening the car door. When the door opening safety device detects abnormality, the door opening-closing driving device generates driving force in the door opening direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an elevator provided with a door safety device that detects pull-in or the like.

  As a background art of this technical field, there is Patent Document 1. In an elevator entrance / exit device having a plurality of door bodies that can be freely opened and closed at an entrance / exit of the elevator, door opening / closing means including a plurality of electric motors that individually drive the plurality of door bodies, and control for controlling the operation of the electric motors And a detecting means for detecting that the foreign object has been drawn when the plurality of door bodies are opened, and the detecting means stops the opening operation of the door body on the side where the foreign object is detected. It is described.

JP 2003-26381 A

  However, in the elevator apparatus described in Patent Document 1, since the door stops in the state of being pulled in at the time of pull-in detection, it is difficult to pull out the pinched state. Although an example of turning off the power to the door machine is also described, a normal door is equipped with a self-closing device consisting of a spring and weight so that force is applied in the door closing direction, and the door closer of the door closer is closed. Due to the force, the door flips and closes, and even if the door is flipped, it is difficult to avoid danger because it is impossible to release the hand that was pulled in immediately.

  In order to solve the above-described problems, the present invention relates to a passenger car, a car door provided in the car, an engagement device provided in the car door, and a car door provided in the landing via the car door and the engagement device. The landing door that is moved by combining, a self-closing device that urges the self-closing force in the closing direction of the landing door, a door opening and closing drive device that drives the car door, and an abnormality at the time of the car door opening operation are detected An elevator comprising: a door opening safety device, wherein the door opening / closing driving device generates a driving force in a door opening direction when the door opening safety device detects an abnormality.

  According to the elevator of the present invention, the pull-in can be easily eliminated.

Cage door front view Landing door front view It is a block block diagram of the door control apparatus by one Example of this invention. It is a flowchart which shows the door opening process operation in a door control apparatus.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a front view of a car door according to an embodiment of the present invention. A door control device 1 that controls the opening and closing of the car door, a door opening and closing drive device 2 that drives the car door in an opening direction or a closing direction, an engagement device 12 that engages the car door 11 with the landing door 14, and a car door A door opening safety device 6A that stops the car door opening operation when a pinching abnormality is detected during the opening operation, and a door closing safety device 6B that stops the car door closing operation when an abnormality such as pinching is detected during the door closing operation. Prepare. The door opening / closing drive device 2 serves as a car door position detection device that detects a position associated with the opening and closing of the car door, and a car load detection device that detects a force applied to the car door, but this may be realized by a separate member.

  FIG. 2 is a front view of a landing door according to an embodiment of the present invention. A landing door 14 and a self-closing device 13 for biasing the landing door in the self-closing direction are provided. Examples of the self-closing device 13 include a device that uses a weight biased in a closing direction by a spring or gravity. In this embodiment, the case of weight will be mainly described, and control in the case of spring will be described later. Since the landing door 14 is driven by being engaged with the car door 11 by the engagement device 12, the self-closing force of the self-closing device 13 is applied to the car door 11.

  FIG. 3 is a block diagram of a door control unit according to an embodiment of the present invention. The door control device applies a force that balances with the self-closing force of the self-closing device 13 to hold the car door in a no-load state, and sets the opening speed or closing speed of the car door to "super" The door opening / closing speed control unit 4 that controls the operation by switching between “low speed” and “normal speed” and operates the door opening / closing drive device, and the door safety device that detects that the door opening safety device 6A and the door closing safety device 6B are operated. The operation detection unit 7 and the operation number determination unit 8 that determines whether the door opening safety device 6A and the door closing safety device 6B have continuously repeated operations exceeding preset values are provided. The door control device 1 operates according to communication with the elevator control device 10 stored in the control panel. In the present embodiment, the elevator control device 10 is stored in the control panel, but the door control device 1 may have the function.

  FIG. 4 is a flowchart showing a door opening process operation in the door control device. At the start, the elevator control unit 10 outputs a door opening command to the door control device 1, and the door control device 1 outputs a force for opening the door at a normal speed via the door opening / closing speed control unit 4. 2 outputs a signal.

  In step S1, the door safety device operation detection unit 7 monitors whether the door opening safety device 6A has been operated when the car door is opened. As a result, when the door safety device operation detection unit 7 detects the operation of the door opening safety device 6A, in step S2, the operation frequency determination unit 8 determines that the door safety device operation frequency during the door opening / closing operation is a predetermined number of times set in advance. Judge whether or not. As a result, when the set number of times is not exceeded, in step S3, the door speed opening / closing speed control unit 4 changes the door closing speed from “normal speed” to “ Switch to "Super slow". Thereafter, in step S4, the door speed opening / closing speed control unit 4 sends a door closing signal to the door opening / closing driving device 2, and the door opening / closing driving device 2 drives the car door in the closing direction at an extremely low speed. In step S5, the door safety device operation detection unit 7 monitors whether the door closing safety device 6B has been operated after the car door is operated in the closing direction. As a result, when there is a detection by the door safety device operation detection unit 7, the process proceeds to step S71, and the elevator control unit 10, which will be described in detail later, carries out a second stage process for retraction cancellation. If the door safety device operation detection unit 7 does not detect the door closing safety device 6B, in step S6, the door safety device operation detection unit 7 operates the door opening safety device 6A after the car door is moved in the closing direction. Check for presence. This is to confirm whether or not the state where the car is pulled in even after the reversing operation of the door is continued, and whether the door opening safety device 6A is operating after a certain time has elapsed after the car door reversing or after a certain distance driving. It is detected by the safety device operation detection unit 7. If the door opening safety device 6A is operating when it is not operating here, it can be expected that the problem has been solved by the reversing operation, and the process proceeds to step S9, which is a return operation.

  Step S71 is a process performed when the door safety device operation detector 7 detects the operation of the door opening safety device 6A or the door closing safety device 6B after the reversing operation. In such a case, if a young child or an elderly person is drawn in, the reaction speed is slow or confused, unlike an adult, so the trouble associated with the drawing-in and the door entry / exit room is eliminated. It may not have been done. Therefore, as a second stage process for retraction cancellation, in step S71, the door speed opening / closing speed control unit 4 outputs a door stop signal to the door opening / closing drive device 2 so as to output a force for stopping the car door. At this time, since the car door and the landing door are operating in the door closing direction, they have kinetic energy and this energy becomes a force in the self-closing direction. The self-closing device 13 generates a force in the self-closing direction. That is, in order to stop the door that is operating in the door closing direction, a force in the door opening direction larger than the self-closing force associated with the self-closing device 13 is output to the door opening / closing drive device 2. In addition, when a force is applied to the door by a passenger or the like and a speed is about to be generated in the car door, the car door speed is controlled to approach 0 by applying a force in the reverse direction.

  After the car door stops, the self-closing force balance holding unit 3 transmits a balance signal for outputting a force balanced with the self-closing force to the door opening / closing drive device 2 as step S7. In this state, even if a force is applied by a passenger or the like and the car door speed is not zero, the car door speed is not controlled to approach zero. As a result, the car door is in a no-load state and is stopped unless a new force is applied from the stopped state, but the car door and the landing door can be moved with a light force, and anyone can easily pull it in. Can be eliminated. The force output in step S7 does not have to be the same magnitude in the direction opposite to the direction of the self-closing force by the self-closing device, and is a force in the direction opposite to the self-closing force and is used to move the car door and the landing door. Any force may be used as long as the load is reduced.

  In this embodiment, a weight is used as the self-closing device. However, when a spring is used, the self-closing force generated by the spring force changes according to the position of the car door. Since this spring force can be calculated as how much closing force acts depending on the position of the car door, a force equivalent to the spring force can be applied depending on the position of the car door to maintain the open state. it can. The car door is stopped by the second-stage process of canceling the pull-in in S71 and S7, and can be moved manually without feeling the weight of the car door as necessary. This way, even if you are unable to deal with it quickly, such as a powerless elderly person or a young child, or if it takes time to determine the situation you are pulled in, you can easily open the car door during this process. It can be moved manually to cancel the retracted state. Further, the force output in step S7 does not have to be exactly the same force in the direction opposite to the self-closing force, and is a force in the opposite direction to the self-closing force and reduces the load when moving the car door and the landing door. It only has to be a force to make. Moreover, you may consider the frictional force of a car door or a landing door.

  Thereafter, in step S8, the self-closing force balance holding unit 3 determines whether or not the holding time period due to the force balanced with the self-closing force has expired. When the preset holding time has expired, the self-closing force balance holding unit 3 returns the door opening / closing force to the steady state in step S9. This is because it is considered that the pull-in state has been solved when the retention period has expired.

  After that, when the second stage process is finished, priority is given to the car door opening operation, and the door opening / closing drive device 2 starts the door opening operation again in step S10, and whether or not the current door opening operation is completed in step S11. Determine. When the completion of the car door opening operation is detected, the door speed control unit 4 returns the car door speed from “ultra low speed” to “normal speed” in step S12, and the current process is completed.

  On the other hand, the pulled-in state of the first-stage process and the second-stage process described above is not resolved, and the door safety device operation frequency is set to a predetermined specified number of times set in advance in the determination of step S2 by the operation frequency determination unit 8. It is also possible to exceed. In such a case, a false detection of the door opening safety device 6A or the door closing prevention safety device 6B, a failure of the door opening / closing drive device 2, or the like can be considered. In a situation where a failure of the door opening / closing drive device 2 is suspected, there is a possibility that the pull-in cancellation process as in S3 to S8 cannot be performed properly and the pull-in is not canceled. Therefore, when the operation number determination unit 8 confirms the operation of the door safety device more than a predetermined number of times, a signal is given to the door control opening / closing speed control unit in step S13 to stop the door opening / closing drive device 2 and control the car door. Do not perform. As a result, since the door opening / closing drive device 2 is not driven, a self-closing force is applied to the car door by the self-closing device 13 provided in the landing door to be engaged. Thereafter, the door opening / closing drive unit 2 determines whether the car door opening operation is completed in step S14 or the car door closing operation is completed in step S15, and waits until either the door closing or the door opening is completed. Here, the door closing or door opening occurs when the door is closed by the self-closing force of the self-closing device 13 or when the door is opened by the passenger.

  When the completion of the car door opening operation is detected in step S14, the self-closing force balance holding unit 3 returns the door opening / closing force to the original steady state in step S17. On the other hand, when the completion of the car door closing operation is detected, the door speed control unit 4 switches the car door opening / closing speed from “normal speed” to “ultra-low speed” in step S16, and executes steps S9 to S12 described above. .

  In carrying out the present invention, the procedure can be changed and other procedures can be added. For example, in this embodiment, after the door opening safety device is operated in step S1, the processing from S2 to S71 is performed. However, it is not always necessary, and the door opening safety device is operated and the pull-in is detected. In step S7, only the force that balances the self-closing force may be output.

  When the door safety device 5 detects an abnormality during the opening operation of the car door, a door opening / closing speed switching unit 4 is provided to make the car door closing operation slower than normal, and the self-closing force balance holding unit 3 opens and closes the door. After the switching by the speed switching unit 4, when no abnormality is detected by the door safety device 5, the car door is reversed and closed for a certain distance, and then the car door is held by a force balanced with the self-closing force of the car door. I have to. According to such a configuration, when the car door is reversed and closed for a certain distance, the door opening / closing speed switching unit 4 can perform the operation at an extremely low speed, so that even if the retracted state continues, the passenger is adversely affected. There is nothing. When the retracted state continues, the door is held by a force that balances the self-closing force of the car door without moving the door so much, so that the passenger in the retracted state is not adversely affected.

  When a passenger in the vicinity of a car door pulls in a hand or baggage during the door opening / closing operation, the door closing safety device or the door opening safety device operates, and the car door is reversed to open / close the door to release the drawing state. I am doing so. Further, when both the door closing safety device and the door opening safety device are operated, the door opening operation is prioritized. However, if the door is inadvertently reversed at its normal speed and completely closed, there is a possibility that unexpected trouble will occur in the car door that has been reversed this time, in a situation where efforts are made to eliminate the pull-in. There are also. However, by setting the car door to a state in which the door opening force that balances the self-closing force is applied, anyone can easily remove the pull-in.

  In addition, this invention is not limited to the Example mentioned above, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1 Door control apparatus 2 Door opening / closing drive apparatus 3 Self-closing force balance holding part 4 Door opening / closing speed control part 6A Door opening safety apparatus 6B Door closing safety apparatus 7 Door safety apparatus operation | movement detection part 8 Operation frequency determination part 11 Car door 13 Self-closing Device 14 landing door

Claims (4)

A platform provided to the car, an engagement device provided to the car door, and a platform that is provided at the platform and is moved by engaging with the cage door via the engagement device. A door and a self-closing device that urges a self-closing force in a closing direction of the landing door;
A door opening / closing drive device that drives the car door; and a door opening safety device that detects an abnormality during the car door opening operation. When the door opening safety device detects an abnormality, the door opening / closing drive device opens the door. An elevator characterized by generating a driving force in the direction   2. The elevator according to claim 1, wherein when the door opening safety device detects an abnormality, the door opening direction force generated by the door opening / closing drive device is smaller than that in a normal door opening operation. An elevator characterized by its power.   2. The elevator according to claim 1, wherein when the door opening safety device detects an abnormality, the force in the door opening direction generated by the door opening / closing drive device is of a magnitude that balances with the self-closing force of the self-closing device. An elevator characterized by that. The elevator according to claim 3,
During the opening operation of the car door, comprising an operation number determination unit for determining whether the detection of the door opening safety device is equal to or more than a preset number of operations,
The elevator which stops the supply of the force to the car door when the detection by the operation number determination unit reaches the operation number or more.

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