JP2022191802A - Entry arrester into elevator car - Google Patents

Abstract

To provide an entry arrester into an elevator car capable of preventing the third parties from entering a car during maintenance and inspection works without causing restrictions on the car's stop position.SOLUTION: An entry arrester into an elevator car is used during maintenance and inspection works performed with an elevator car door and a landing door open. The entry arrester into the elevator car comprises a roll shaft installed on the ceiling in an elevator car and the axial direction of which is the opening/closing direction of the car door, and a partition curtain wound on the roll shaft. The partition curtain is configured to partition between a landing and a car interior by pulling it downward with the car door and the landing door open. A call unit is installed at the lower end of the partition curtain. The call unit calls out toward the landing side using sound or light that the maintenance and inspection works are in progress.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present disclosure relates to an in-car entry prevention device used to prevent a third party from entering a car during maintenance and inspection of an elevator.

Patent Literature 1 discloses a boarding gate safety fence device for an elevator. In this device, a partition curtain wound around a winding shaft is accommodated in one side frame of a three-sided frame of an elevator hall entrance. During maintenance and inspection of the elevator, the partition curtain is pulled out and stretched between the other side frame.

Japanese Patent Application Laid-Open No. 2008-265968

An elevator equipped with the safety fence device of Patent Document 1 is restricted by the shape and design of the three-sided frame in the hall. In addition, when there are a plurality of floors where safety fence devices are required, it is required to install safety fence devices on all floors where safety fence devices are required. On the other hand, if the landing floors on which the safety fence devices are installed are limited, the stop position of the car will be restricted during maintenance and inspection.

The present disclosure has been made to solve the problems described above, and is capable of preventing third parties from entering the car during maintenance and inspection work without restricting the car stop position. An object of the present invention is to provide an in-car entry prevention device for an elevator.

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 door and landing door open. The car intrusion prevention device is installed on the ceiling in the car of the elevator, and includes a roll shaft whose axial direction is the opening/closing direction of the car door, and a partition curtain wound around the roll shaft. The partition curtain is configured to separate the landing and the inside of the car by being drawn downward while the car door and the landing door are open.

According to the elevator car entry prevention device of the present disclosure, even when the car door and the hall door are open during maintenance and inspection work, it is possible to effectively prevent a third party from entering the car from the landing. It becomes possible to In addition, since the car intrusion prevention device is installed on the car side, the landing where the car is stopped is not limited.

1 is a configuration diagram of an elevator according to an embodiment of the present disclosure; FIG. 1 is a diagram of a usage example of an in-car entry prevention device according to an embodiment of the present disclosure, viewed from a landing; FIG. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view schematically showing an elevator car to which an in-car entry prevention device according to an embodiment of the present disclosure is applied; FIG. 3 is a schematic view showing the internal structure of the case of the in-car intrusion prevention device. FIG. 4 is a diagram for explaining the structure of a calling unit; It is the figure which looked at the ceiling from the inside of the cage of an elevator. FIG. 7 is a schematic diagram showing a cross section taken along line AA in FIG. 6; FIG. 7 is a schematic diagram showing a BB cross section in FIG. 6; It is a cross-sectional schematic diagram which shows the fitting structure of the calling unit of a modification.

Embodiments will be described below with reference to the drawings. In addition, the same code|symbol is attached|subjected to the element which is common in each figure, and the overlapping description is abbreviate|omitted.

Embodiment.
1. Configuration of Elevator of 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 runs through each of a plurality of floors of a building 2 . In the elevator 1 , each of the plurality of landings 4 is provided on each of the plurality of floors of the building 2 .

The elevator 1 comprises a hoisting machine 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 driving force. The sheave of the hoisting machine 5 is a device that is rotated 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 hoisting machine 5 . One end of the main rope 6 is provided on the car 7, for example. The other end of the main rope 6 is provided with a counterweight 8, for example. The car 7 is a device that transports users and the like between a plurality of floors of the building 2 by following the movement of the main rope 6 and running vertically inside the hoistway 3 . The car 7 has a car door 9 . The car door 9 is a device that opens and closes when the car 7 is stopped at any of a plurality of floors so that a user can get on and off the car 7 . A counterweight 8 is provided in the hoistway 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 with the car 7 .

The elevator 1 has a plurality of landing doors 10. - 特許庁Each of the plurality of hall doors 10 is provided in each of the plurality of halls 4 . Each of the plurality of 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 on which the landing door 10 is provided.

Here, the elevator 1 is periodically inspected and maintained. Maintenance and inspection work may be performed by opening both the car door 9 and the landing door 10 while the car 7 is stopped at the landing 4 . The elevator 1 of the present embodiment is characterized by the construction of a car entry prevention device for preventing a third party from entering the car 7 during such maintenance and inspection work. Hereinafter, the configuration of the in-car entry prevention device according to the present embodiment will be described in detail with reference to the drawings.

2. Configuration of In-car Entry Prevention Device of Embodiment FIG. 2 is a view of an example of use of the in-car entry prevention device of the embodiment of the present disclosure as viewed from the hall. FIG. 3 is a perspective view schematically showing an elevator car to which the in-car intrusion prevention device of 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 calling unit 30 vertically downward from the ceiling 7a in the car 7 with the car door 9 and the hall door 10 opened. The partition curtain 26 is a curtain member that separates the interior space of the car 7 extending behind the three-sided frame 11 from the landing 4, and is wound in a roll in a case 24 installed behind the ceiling 7a. are housed. The partition 26 is pulled out by a movable device 28 including an electric motor. A design for notifying that the elevator 1 is under inspection and that entry is prohibited is expressed on the surface of the pulled-out partition curtain 26 on the landing 4 side. The content of the design here is not limited as long as it is the content that calls attention to a third person in the hall 4 . When the partition curtain 26 is drawn downward, the design can be visually recognized from the hall 4 side.

The calling unit 30 is a unit that calls out to a third person in the hall 4 to prohibit entry by voice and light. The calling unit 30 is installed at the lower end of the partition curtain 26 and stored in the case 24 together with the partition curtain 26 when not in use. When the partition curtain 26 is drawn downward, the calling unit 30 also moves downward. The calling unit 30 also functions as a weight that holds the lower end of the partition 26 .

A lighting device 13 is installed behind the ceiling 7a in the car 7. - 特許庁The case 24 of the car intrusion prevention device 20 is fixed by a fastening member 25 at a position closer to the car door 9 than the lighting device 13 behind the ceiling 7a. An opening is provided in the portion of the ceiling 7a to which the case 24 is fixed. A lid member and an opening/closing mechanism for opening and closing the lid member, which will be described later, are installed in the opening. The partition curtain 26 and the calling unit 30 are pulled out from the opening of the ceiling 7a after opening the cover member. Each configuration and function of the in-car entry 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 in-car intrusion prevention device. As shown in this figure, in the case 24 of the in-car intrusion prevention device 20, there are a roll shaft 27 around which the partition curtain 26 is wound in a roll shape, a calling unit 30 fixed to the tip of the partition curtain 26, is accommodated. Both ends of the roll shaft 27 are rotatably held by the case 24 with the opening/closing direction of the car door 9 as the axial direction. One end of the roll shaft 27 is connected to a movable device 28 that drives the roll shaft 27 to rotate. 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 . Power for mobile device 28 is supplied from car control panel 14 of car 7 of elevator 1 . Further, 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 also be stopped at an arbitrary position.

4. calling unit 30
FIG. 5 is a diagram for explaining the structure of the calling unit. The calling unit 30 is an auxiliary device for calling attention especially to a child who cannot understand the display of the partition 26 or a visually handicapped person. The calling 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 calling unit 30 is, for example, about 3 kg.

Power switch 36 is the main power source for interrogation unit 30 . When the power switch 36 is turned on, the power lamp 34 is lit and the power from the battery 35 is supplied to the LED light 31, the human sensor 32, and the speaker 33. A human detection sensor 32 is arranged on the surface of the calling unit 30 on the hall 4 side and detects a person in the hall 4 .

The LED lights 31 are red LED lights arranged on the left and right sides of the surface on the boarding hall 4 side. The LED light 31 emits light toward the hall 4 by turning on the power switch 36 . The light emission form of the LED light 31 is not limited. The LED light 31 may be constantly blinking or always lit. Alternatively, the LED light 31 may blink or light up when the human sensor 32 detects a person.

The speaker 33 outputs a voice message indicating that the elevator 1 is being inspected to a third person at the hall 4. - 特許庁Typically, speaker 33 repeatedly outputs a voice message by turning on power switch 36 . Alternatively, the speaker 33 outputs a voice message when the human sensor 32 detects a person.

5. 6. Opening and Closing Device for Lid Member FIG. 6 is a diagram of the ceiling viewed from inside the car. FIG. 7 is a schematic diagram showing the AA section in FIG. FIG. 8 is a schematic diagram showing a BB section in FIG. The lid member 40 is provided with an opening 7 b for pulling out the partition curtain 26 and the calling unit 30 of the in-car entry prevention device 20 into the car 7 . A lid member 40 is installed in the opening 7b to cover the opening 7b with the partition curtain 26 and the calling unit 30 stored therein.

The lid member 40 is connected to an opening/closing device 46 via an arm 44 . The opening/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/closing device 46 is rotated, the arm 44 is rotated together with the rotating shaft, thereby opening and closing the lid member 40 . Power for the switchgear 46 is supplied from the car control panel 14 of the car 7 of the elevator 1 . The partition curtain 26 and the calling unit 30 of the in-car entry prevention device 20 are pulled out downward after the cover member 40 is opened.

A locking device 42 is provided on the lid member 40 . The locking device 42 is for preventing the lid member 40 from being opened by a third party. Typically, the locking device 42 is unlocked with a key held by an operator. The key of the locking device 42 can be shared with the key of 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. Concrete Usage Example of Car Intrusion Prevention Device Next, a concrete usage example of the car intrusion prevention device 20 will be described. A worker who performs maintenance and inspection work on the elevator 1 first stops the car 7 of the elevator 1 at a predetermined landing 4 . The operator operates the maintenance operation panel 15 to activate the maintenance inspection mode and to open the car door 9 and the landing door 10 .

A worker operates the switches of 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 calling unit 30 downward. There is no limit to the pull-out position of the partition curtain 26. - 特許庁FIG. 2 illustrates a state in which the calling unit 30 is pulled out to the floor of the car 7 . As shown in FIG. 2, the surface of the partition curtain 26 on the landing 4 side is designed to prevent entry into the car 7 . As a result, a third person at the hall 4 can recognize that entry into the car 7 is prohibited.

Also, the worker turns on the power switch 36 of the calling unit 30 . As a result, the LED light 31 of the calling unit 30 is turned on, and the human detection function using the human sensor 32 is activated. When the human sensor 32 detects a person approaching the hall 4, the speaker 33 outputs a voice message indicating that the elevator 1 is being inspected. This makes it possible to deliver a message by voice to a person who has difficulty visually recognizing the display of the partition 26 .

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

According to the maintenance and inspection procedure as described above, even if the car door 9 and the landing 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 landing 4. can be prevented. Further, since the in-car entry prevention device 20 is installed on the side of the car 7, the hall 4 for maintenance and inspection work is not limited.

6. MODIFIED EXAMPLES The following modified aspects may be applied to the in-car entry prevention device 20 of the present embodiment.

6-1. Partition curtain 26
The partition curtain 26 has a display function on the curtain surface on the hall 4 side, and as a display device that can be accommodated in a roll, for example, a bendable organic EL display may be employed. In this case, for example, any image may be displayed on the screen according to the type of maintenance and inspection work. Also, in addition to the display for preventing entry, dynamic information such as the expected return time may be displayed along with the screen.

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

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

6-2. calling unit 30
In the car entry prevention device 20 of the present embodiment, the configuration of the calling unit 30 is not essential. Alternatively, the calling unit 30 may be configured to include only one of the LED light 31 and the speaker 33 . Further, the calling unit 30 may be powered by a power cord from the car control panel 14 of the car 7 of the elevator 1 instead of the battery 35 .

The interrogation unit 30 may be structured to fit into the threshold groove of the car 7 . FIG. 9 is a schematic cross-sectional view showing a fitting structure of a calling unit of a modification. In addition, in FIG. 9, only the external shape of the cross section which cut|disconnected by the plane perpendicular|vertical to the longitudinal direction of the calling unit 30 is illustrated. 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/closing direction of the car door 9. As shown in FIG. A convex groove 37 is formed in the bottom surface of the calling unit 30 along the longitudinal direction. The groove width of the convex groove 37 is narrower than the groove width of the threshold groove 7d. According to such a configuration, the convex groove 37 of the interrogation unit 30 drawn downward fits into the threshold groove 7d. As a result, positional displacement of the calling unit 30 is suppressed.

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

6-3. switchgear 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.

Reference Signs List 1 elevator 2 building 3 hoistway 4 landing 5 hoisting machine 6 main rope 7 car 7a ceiling 7b opening 7c floor 7d threshold groove 8 counterweight 9 car door 10 Landing door 11 Three-sided frame 13 Lighting device 14 Car control panel 15 Maintenance control panel 20 In-car entry prevention device 24 Case 25 Fastening member 26 Partition curtain 27 Roll shaft 28 Movable device 30 Calling unit , 31 LED light, 32 motion sensor, 33 speaker, 34 power lamp, 35 battery, 36 power switch, 37 convex groove, 40 lid member, 42 locking device, 44 arm, 46 opening and closing device

Claims (11)

An elevator car entry prevention device used during maintenance and inspection work performed with the elevator car door and landing door open,
a roll shaft installed on the ceiling in the elevator car and having an axial direction in the opening/closing direction of the car door;
and a partition curtain wound around the roll shaft,
The partition curtain is a device for preventing entry into the car of an elevator configured to partition a landing and the inside of the car by being drawn downward with the car door and the landing door open. 2. The apparatus for preventing intrusion into an elevator car according to claim 1, further comprising a calling unit installed at the lower end of said partition curtain and calling to the side of said hall that maintenance and inspection work is underway. The interrogation unit comprises:
a human sensor provided to detect a person near the landing;
a speaker that emits a voice for calling when the human sensor detects a person;
The in-car entry prevention device for an elevator according to claim 2, comprising: The interrogation unit comprises:
4. The apparatus for preventing intrusion into a car of an elevator according to claim 2, further comprising a light that emits light toward the landing. The interrogation unit comprises:
a convex groove that is provided on the bottom side and fits into the concave groove on the floor surface in the car;
A power switch provided on the bottom side of the calling unit,
5. 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. 6. The apparatus for preventing intrusion into a car of an elevator according to any one of claims 1 to 5, further comprising an electric movable device that rotates the roll shaft to pull out and wind up the partition curtain. When the elevator is in maintenance inspection mode,
The in-car entry prevention device for an elevator according to claim 6, wherein the movable device is driven in conjunction with the maintenance and inspection mode. 8. The in-car entry prevention device for an elevator according to any one of claims 1 to 7, wherein the partition curtain is configured to be able to be stopped at an arbitrary pulled-out position. an opening for storing the partition curtain in the ceiling;
a lid member for opening and closing the opening;
The in-car entry prevention device for an elevator according to any one of claims 1 to 8, further comprising an electric opening/closing device that opens and closes the lid member. The lid member has a locking device,
10. The elevator car intrusion prevention device according to claim 9, wherein the key of the locking device is the same as the key for operating the maintenance operation panel in the car. 11. The partition curtain 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 side of the hall according to maintenance and inspection work of the elevator. Intrusion prevention device in the car of the elevator described.

Images