JP7563305B2 - Device to prevent people from entering elevator cars - Google Patents

Description

This disclosure relates to an elevator car intrusion prevention device that is used to prevent third parties from entering the elevator car during maintenance and inspection.

Patent Document 1 discloses an elevator landing safety fence device. In this device, a partition curtain wound around a shaft is stored in one of the three side frames of the elevator landing entrance. During elevator maintenance and inspection, the partition curtain is pulled out and stretched between the other side frame.

JP 2008-265968 A

An elevator equipped with the safety fence device of Patent Document 1 is subject to restrictions due to the shape and design of the jambs at the landing. Furthermore, if there are multiple landing floors where safety fence devices are required, it is necessary to install safety fence devices at all of the required landing floors. On the other hand, limiting the landing floors on which safety fence devices are installed places restrictions on the car's stopping position during maintenance and inspection.

This disclosure has been made to solve the problems described above, and aims to provide an elevator car intrusion prevention device that can prevent third parties from entering the car during maintenance and inspection work without placing restrictions on the car's stopping position.

The elevator car intrusion prevention device of the present disclosure is applied to an elevator car intrusion prevention device used during maintenance and inspection work performed with the elevator car doors and hall doors open. The elevator car intrusion prevention device is installed on the ceiling inside the elevator car and includes a roll shaft whose axial direction is the opening and closing direction of the car doors, and a partition curtain wound around the roll shaft. The partition curtain is configured to separate the hall from the inside of the car by being pulled downward with the car doors and hall doors open.

The elevator car intrusion prevention device disclosed herein can effectively prevent third parties from entering the car from the landing even when the car doors and hall doors are open during maintenance and inspection work. In addition, because the car intrusion prevention device is installed on the car side, there are no limitations on the landings at which the car can be stopped.

FIG. 1 is a configuration diagram of an elevator according to an embodiment of the present disclosure. 1 is a diagram showing an example of use of an intrusion prevention device into a car according to an embodiment of the present disclosure, as viewed from a landing. FIG. 1 is a perspective view showing a schematic diagram of an elevator car to which an inside-car intrusion prevention device according to an embodiment of the present disclosure is applied; 2 is a schematic view showing a see-through internal structure of a case of the car intrusion prevention device. FIG. FIG. 2 is a diagram for explaining the structure of a call unit. A view of the ceiling from inside the elevator car. 7 is a schematic diagram showing a cross section taken along line AA in FIG. 6. 7 is a schematic diagram showing the cross section BB in FIG. 6. FIG. 13 is a schematic cross-sectional view showing a fitting structure of a modified example of a call unit.

The following describes the embodiment with reference to the drawings. Note that elements common to each drawing are given the same reference numerals and duplicated explanations are omitted.

Embodiment
1. Configuration of an elevator according to an embodiment Fig. 1 is a configuration diagram of an elevator according to an embodiment of the present disclosure. An elevator 1 is provided in a building 2. The building 2 has a plurality of floors. In the elevator 1, a hoistway 3 passes through each of the plurality of floors of the building 2. In the elevator 1, each of a plurality of landings 4 is provided on each of the plurality of floors of the building 2.

The elevator 1 includes a hoist 5, a main rope 6, a car 7, and a counterweight 8. The hoist 5 includes a motor and a sheave. The motor of the hoist 5 is a device that generates a driving force. The sheave of the hoist 5 is a device that rotates by the driving force generated by the motor. The main rope 6 is wound around the sheave of the hoist 5. The main rope 6 is a member that moves following the rotation of the sheave of the hoist 5. One end of the main rope 6 is attached to, for example, the car 7. The other end of the main rope 6 is attached to, for example, the counterweight 8. The car 7 is a device that transports users and the like between multiple floors of the building 2 by traveling vertically inside the hoistway 3 following the movement of the main rope 6. The car 7 includes a car door 9. The car door 9 is a device that opens and closes when the car 7 is stopped at one of the floors so that passengers can get on and off the car 7. The counterweight 8 is provided in the elevator 3. The counterweight 8 is a device that balances the load applied to both sides of the sheave of the hoisting machine 5 through the main rope 6 between the car 7 and the counterweight 8.

The elevator 1 is equipped with multiple landing doors 10. Each of the multiple landing doors 10 is provided at each of the multiple landings 4. Each of the multiple landing doors 10 is a device that opens and closes in conjunction with the car door 9 when the car 7 is stopped at the floor where the landing door 10 is provided.

Here, elevator 1 is periodically subjected to maintenance and inspection work. Maintenance and inspection work may be performed with car 7 stopped at hall 4 and both car door 9 and hall door 10 open. Elevator 1 of this embodiment is characterized by the configuration of an intrusion prevention device for preventing third parties from entering car 7 during such maintenance and inspection work. The configuration of the intrusion prevention device of this embodiment will be described in detail below with reference to the drawings.

2. Configuration of the car intrusion prevention device according to the embodiment Fig. 2 is a view of an example of use of the car intrusion prevention device according to the embodiment of the present disclosure, as seen from a landing. Fig. 3 is a perspective view showing a typical elevator car to which the car intrusion prevention device according to the embodiment of the present disclosure is applied. The car intrusion prevention device 20 is used by pulling out the partition curtain 26 and the call unit 30 vertically downward from the ceiling 7a inside the car 7 with the car door 9 and the landing door 10 open. The partition curtain 26 is a curtain member that separates the internal space of the car 7 extending behind the jamb 11 from the landing 4, and is stored in a rolled-up state in a case 24 installed on the back of the ceiling 7a. The partition curtain 26 is pulled out by a movable device 28 including an electric motor. A design for informing that the elevator 1 is under inspection and that entry is prohibited is expressed on the surface of the pulled-out partition curtain 26 facing the landing 4. The design content here is not limited as long as it alerts a third party present at the landing 4. When the partition curtain 26 is pulled downward, the design can be seen from the landing 4 side.

The call unit 30 is a unit that uses sound and light to warn third parties present at the landing 4 not to enter. The call unit 30 is installed at the bottom end of the partition curtain 26, and is stored in the case 24 together with the partition curtain 26 when not in use. When the partition curtain 26 is pulled downward, the call unit 30 also moves downward. The call unit 30 also functions as a weight that holds the bottom end of the partition curtain 26 in place.

A lighting device 13 is installed behind the ceiling 7a inside the car 7. A case 24 of the car intrusion prevention device 20 is fixed by fastening members 25 behind the ceiling 7a, closer to the car door 9 than the lighting device 13. An opening is provided in the part of the ceiling 7a to which the case 24 is fixed. A lid member (described later) and an opening/closing mechanism for opening and closing the lid member are installed in the opening. After the lid member is opened, the partition curtain 26 and the call unit 30 are pulled out from the opening in the ceiling 7a. The components and functions of the car intrusion prevention device 20 will be described in more detail.

3. Partition curtain 26
FIG. 4 is a schematic view showing the internal structure of the case of the car intrusion prevention device in a see-through manner. As shown in this figure, a roll shaft 27 on which the partition curtain 26 is wound in a roll shape and a call unit 30 fixed to the tip of the partition curtain 26 are housed in a case 24 of the car intrusion prevention device 20. The roll shaft 27 is held in the case 24 so as to be rotatable at both ends with the opening and closing direction of the car door 9 as the axial direction. A movable device 28 that rotates the roll shaft 27 is connected to one end of the roll shaft 27. The movable device 28 includes an electric motor and a rotation mechanism that transmits the rotational force of the electric motor to the roll shaft 27. The power source of the movable device 28 is supplied from the car control panel 14 of the car 7 of the elevator 1. In addition, the car 7 is provided with a maintenance operation panel 15 that is operated during maintenance and inspection. Switches for operating the movable device 28 are also provided on the maintenance operation panel 15. By operating the maintenance operation panel 15, the partition curtain 26 can be stopped at any position.

4. Call unit 30
5 is a diagram for explaining the structure of the call unit 30. The call unit 30 is an auxiliary device for calling attention, particularly to children who cannot understand the display on the partition curtain 26 or to visually impaired people. The call unit 30 has a rectangular parallelepiped outer shell and includes an LED light 31, a human sensor 32, a speaker 33, a power lamp 34, a battery 35, and a power switch 36. The weight of the call unit 30 is, for example, about 3 kg.

The power switch 36 is the main power source for the call unit 30. When the power switch 36 is turned on, the power lamp 34 is turned on and power is supplied from the battery 35 to the LED light 31, the human presence sensor 32, and the speaker 33. The human presence sensor 32 is disposed on the surface of the call unit 30 facing the hall 4, and detects people present at the hall 4.

The LED lights 31 are red LED lights arranged on the left and right sides of the surface facing the landing 4. The LED lights 31 emit light toward the landing 4 when the power switch 36 is turned ON. There are no limitations on the form of light emission of the LED lights 31. The LED lights 31 may be constantly flashing or constantly lit. Alternatively, the LED lights 31 may be constantly flashing or lit when the human presence sensor 32 detects a person.

The speaker 33 outputs a voice message to a third party present at the hall 4, indicating that the elevator 1 is undergoing inspection. Typically, the speaker 33 repeatedly outputs the voice message by turning on the power switch 36. Alternatively, the speaker 33 outputs the voice message when the human presence sensor 32 detects a person.

5. Lid member opening/closing device Fig. 6 is a view of the ceiling as seen from inside the car. Fig. 7 is a schematic diagram showing the A-A cross section in Fig. 6. Fig. 8 is a schematic diagram showing the B-B cross section in Fig. 6. The lid member 40 is provided with an opening 7b for pulling out the partition curtain 26 and the call unit 30 of the car intrusion prevention device 20 into the car 7. The lid member 40 is installed in the opening 7b to close the opening 7b with the partition curtain 26 and the call unit 30 stored therein.

The cover member 40 is connected to the opening and closing device 46 via the arm 44. The opening and closing device 46 includes a rotating shaft to which the arm 44 is connected, and an electric motor that drives the rotating shaft. When the electric motor of the opening and closing device 46 rotates, the arm 44 rotates together with the rotating shaft, thereby opening and closing the cover member 40. Power for the opening and closing device 46 is supplied from the car control panel 14 of the car 7 of the elevator 1. The partition curtain 26 and the call unit 30 of the car intrusion prevention device 20 are pulled downward after the cover member 40 is opened.

The cover member 40 is provided with a locking device 42. The locking device 42 is intended to prevent a third party from opening the cover member 40. Typically, the locking device 42 is unlocked by a key held by the worker. The key for the locking device 42 can be the same as the key for the maintenance operation panel 15. Alternatively, the locking device 42 may be an electronic key that is unlocked by operating the maintenance operation panel 15.

5. Specific examples of use of the car intrusion prevention device Next, specific examples of use of the car intrusion prevention device 20 will be described. A worker performing maintenance and inspection work on the elevator 1 first stops the car 7 of the elevator 1 at a predetermined landing 4. The worker operates the maintenance operation panel 15 to activate the maintenance and inspection mode and open the car doors 9 and landing doors 10.

The worker operates the switches on the maintenance operation panel 15 to drive the opening/closing device 46 and the movable device 28. Here, the opening/closing device 46 is driven to open the cover member 40, and then the movable device 28 is driven to pull out the partition curtain 26 and the call unit 30 downward. There are no limitations to the pull-out position of the partition curtain 26. Figure 2 shows an example in which the call unit 30 is pulled out to the floor of the car 7. As shown in Figure 2, the surface of the partition curtain 26 facing the hall 4 has a design to prevent entry into the car 7. This allows third parties at the hall 4 to recognize that entry into the car 7 is prohibited.

The worker also turns on the power switch 36 of the call unit 30. This lights up the LED light 31 of the call unit 30 and activates the human detection function using the human sensor 32. When the human sensor 32 detects a person approaching the hall 4, a voice message indicating that the elevator 1 is undergoing inspection is output from the speaker 33. This makes it possible to deliver a message by voice to people who have difficulty visually recognizing the display on the partition curtain 26.

When the maintenance and inspection are completed, the worker again operates the switches on the maintenance operation panel 15 to store the partition curtain 26 and the call unit 30 in the upward position, close the cover member 40, and lock the locking device 42.

According to the above-described maintenance and inspection procedure, even if the car door 9 and hall door 10 are open during maintenance and inspection work, it is possible to effectively prevent a third party from entering the car 7 from the hall 4. In addition, since the car intrusion prevention device 20 is installed on the car 7 side, the hall 4 at which maintenance and inspection work is performed is not limited.

6. Modifications The car intrusion prevention device 20 of the present embodiment may be modified as follows.

6-1. Partition curtain 26
The partition curtain 26 may have a display function on the curtain surface on the landing 4 side, and may employ, for example, a bendable organic EL display as a display device that can be stored in a rolled shape. In this case, for example, any image may be displayed on the curtain surface depending on the type of maintenance and inspection work. In addition to the display for preventing entry, dynamic information such as the expected return time may be displayed on the curtain surface.

The partition curtain 26 may be controlled to be automatically pulled out when the maintenance inspection mode is turned ON during maintenance inspection work. In this case, the car intrusion prevention device 20 may automatically drive the opening/closing device 46 and the movable device 28 in sequence, for example, in conjunction with the maintenance inspection mode being turned ON.

The partition curtain 26 may be configured to be manually pulled out. In this case, the partition curtain 26 may be configured to employ a known holding function so that the pull-out of the partition curtain 26 can be stopped and held at any position.

6-2. Call unit 30
In the car intrusion prevention device 20 of this embodiment, the configuration of the call unit 30 is not essential. Also, the call unit 30 may be configured to include only either the LED light 31 or the speaker 33. Furthermore, the power source for the call unit 30 may be configured to be supplied by a power cord drawn from the car control panel 14 of the car 7 of the elevator 1, instead of the battery 35.

The call unit 30 may be structured to fit into the threshold groove of the car 7. FIG. 9 is a cross-sectional schematic diagram showing the fitting structure of a modified call unit. Note that FIG. 9 illustrates only the outer shape of a cross section cut along a plane perpendicular to the longitudinal direction of the call unit 30. In FIG. 9, the floor surface 7c of the car 7 is provided with a threshold groove 7d, which is a concave groove, along the opening and closing direction of the car door 9. A convex groove 37 is formed along the longitudinal direction on the bottom surface of the call unit 30. The groove width of the convex groove 37 is narrower than the groove width of the threshold groove 7d. With this configuration, the convex groove 37 of the call unit 30 pulled downward fits into the threshold groove 7d. This prevents the call unit 30 from shifting out of position.

The power switch 36 of the call unit 30 may be installed on the bottom side so that it is pressed when the bottom surface of the call unit 30 comes into contact with the floor surface 7c or the threshold groove 7d. With this configuration, the power switch 36 of the call unit 30 can be turned ON by pulling the call unit 30 out to the floor surface 7c.

6-3. Opening and closing device 46

The opening/closing device 46 may be configured to open and close in conjunction with the operation of the movable device 28 of the partition curtain 26. Alternatively, the opening/closing device 46 may be configured to be manually opened and closed.

1 elevator, 2 building, 3 hoistway, 4 landing, 5 hoisting machine, 6 main rope, 7 cage, 7a ceiling, 7b opening, 7c floor, 7d threshold groove, 8 counterweight, 9 cage door, 10 landing door, 11 jamb, 13 lighting equipment, 14 cage control panel, 15 maintenance operation panel, 20 cage intrusion prevention device, 24 case, 25 fastening member, 26 partition curtain, 27 roll shaft, 28 movable device, 30 call unit, 31 LED light, 32 human sensor, 33 speaker, 34 power lamp, 35 battery, 36 power switch, 37 convex groove, 40 cover member, 42 locking device, 44 arm, 46 Opening and closing device

Claims (11)

An elevator car intrusion prevention device used during maintenance and inspection work performed with the elevator car door and hall door open,
A roll shaft is installed on a ceiling inside the elevator car and has an axial direction that corresponds to the opening and closing direction of the car door;
A partition curtain wound around the roll shaft,
The device for preventing intrusion into an elevator car is configured to separate an area between a landing and the inside of the car by being pulled downward with the car door and the landing door being open. The elevator car entry prevention device according to claim 1, further comprising a call unit that is installed at the lower end of the partition curtain and issues a call to the landing side to inform the person that maintenance and inspection work is being performed. The interrogation unit includes:
A human presence sensor provided to detect a person near the platform;
a speaker that emits a voice for calling out to the user when the human presence sensor detects a human;
The elevator car intrusion prevention device according to claim 2, further comprising: The interrogation unit includes:
4. The elevator car intrusion prevention device according to claim 2 or 3, further comprising a light that emits light toward the side of the landing. The interrogation unit includes:
A convex groove is provided on the bottom surface side and engages with a concave groove on the floor surface inside the car;
A power switch is provided on the bottom side of the interrogation unit,
The elevator car intrusion prevention device according to any one of claims 2 to 4, wherein the power switch is configured to be turned on when the convex groove fits into the concave groove. The elevator car intrusion prevention device according to any one of claims 1 to 5, further comprising an electrically operated movable device that rotates the roll shaft to pull out and wind up the partition curtain. When the elevator is in maintenance mode,
The elevator car intrusion prevention device according to claim 6, wherein the movable device is driven in conjunction with the maintenance and inspection mode. The elevator car intrusion prevention device according to any one of claims 1 to 7, wherein the partition curtain is configured to be capable of being stopped at any drawn-out position. an opening for storing the partition curtain in the ceiling;
A cover member for opening and closing the opening;
The elevator car intrusion prevention device according to any one of claims 1 to 8, further comprising: an electric opening and closing device for opening and closing the cover member. The cover member is provided with a locking device,
The elevator car intrusion prevention device according to claim 9, wherein a key for the locking device is the same as a key for operating a maintenance operation panel in the elevator car. The elevator car intrusion prevention device according to any one of claims 1 to 10, wherein the partition curtain includes a display device that displays an arbitrary image on the curtain surface on the landing side in response to maintenance and inspection work on the elevator.

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