WO2023062827A1

WO2023062827A1 - Elevator door apparatus

Info

Publication number: WO2023062827A1
Application number: PCT/JP2021/038269
Authority: WO
Inventors: 純平吉野
Original assignee: 三菱電機株式会社
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2023-04-20

Abstract

Provided is an elevator door apparatus that prevents a door from being closed at high speed during power failure and allows the door to be easily opened even in a power failure state. This elevator door apparatus comprises: a damper that is provided at a door hanger from which a door panel hangs, and that does not generate a force for dampening the movement of the door panel when a voltage is applied thereto in a first direction but generates a force for dampening the movement of the door panel when a voltage is applied thereto in a second direction; and a dielectric device that is electrically connected to the damper, and applies a voltage to the damper in the first direction when the door panel is moved in the opening direction while the elevator is in the power failure state, and applies a voltage in the second direction when the door panel is moved in the closing direction while the elevator is in the power failure state.

Description

elevator door device

The present disclosure relates to an elevator door device.

Patent Document 1 discloses an elevator door device. In the door device, when the elevator power fails while the car door and the hall door are open, the car door and the hall door are closed to generate a dynamic braking force. The door device is slowly closed by the dynamic braking force. That is, it is possible to suppress the occurrence of an impact due to the door closing at a high speed.

Japanese Patent Application Laid-Open No. 2003-261281

However, in the door device described in Patent Document 1, when a person opens the door device while the elevator is in a power failure state, the opening of the door device generates a dynamic braking force. Therefore, it is necessary for a person to apply a large force to the door device corresponding to the dynamic braking force.

The present disclosure was made to solve the above problems. An object of the present disclosure is to provide an elevator door device that prevents the door from closing at a high speed during a power failure and that can be easily opened even during a power failure.

The elevator door device according to the present disclosure is provided on a door hanger for hanging a door panel, and does not generate a force to brake the movement of the door panel when a voltage is applied in a first direction, and a voltage is applied in a second direction. a brake that is electrically connected to the brake for generating a force that brakes the movement of the door panel when the elevator is in the first direction when the door panel moves in the opening direction while the elevator is in a power failure state; and a inductor that applies the voltage in the second direction when the door panel moves in the closing direction while the elevator is in a power failure state.

According to the present disclosure, when the door panel moves in the closing direction in a power failure state, a force is generated that brakes the movement of the door panel. When the door panel moves in the opening direction in a power failure state, no force is generated to brake the movement of the door panel. Therefore, the door can be prevented from closing at a high speed during a power failure, and can be easily opened even during a power failure.

1 is a plan view showing an outline of an elevator door device according to Embodiment 1. FIG. FIG. 2 is a diagram showing a closed circuit formed in the elevator door device according to Embodiment 1; FIG. 3 is a plan view showing an outline of an elevator door device according to Embodiment 2; FIG. 10 is a diagram showing a closed circuit formed in the elevator door device according to Embodiment 3;

A mode for carrying out the present disclosure will be described with reference to the attached drawings. In addition, the same code|symbol is attached|subjected to the part which is the same or corresponds in each figure. Redundant description of the relevant part will be simplified or omitted as appropriate.

Embodiment 1.
FIG. 1 is a plan view showing an outline of an elevator door device according to Embodiment 1. FIG.

In the elevator system 1 of FIG. 1, the hoistway 2 runs through each floor of the building (not shown). A plurality of landings 3 are provided on each floor of the building. Each of the plurality of landings 3 faces the hoistway 2 . One of a plurality of landings 3 is shown in FIG.

Each of the plurality of hall door devices 4 is provided at the entrance/exit of the plurality of halls 3 as a door device of the elevator system 1 . Each of the plurality of landing door devices 4 has the same configuration. FIG. 1 is a diagram of one of the plurality of hall door devices 4 viewed from the hoistway 2 to the hall 3. As shown in FIG.

The landing door device 4 includes a door rail 5,

door panels

6a and 6b,

door hangers

7a and 7b,

pulleys

8a and 8b, a door rope 9, a door closer 10, a brake 20 and a dielectric 30.

The door rail 5 is provided above the landing door device 4 . The longitudinal direction of the door rail 5 is parallel.

Door panels

6 a and 6 b are provided below door rails 5 . The door panel 6a and the door panel 6b are horizontally symmetrical with respect to the center of the doorway of the hall 3. As shown in FIG.

The door hanger 7a is fixed to the upper part of the door panel 6a. The door hanger 7a has rollers. The door hanger 7a is supported by the door rail 5 via rollers. The door hanger 7b is fixed to the upper portion of the door panel 6b. The door hanger 7b has rollers. The door hanger 7b is supported by the door rail 5 via rollers.

The

door hangers

7a and 7b respectively hang the

door panels

6a and 6b movably in the opening/closing direction. In other words, the

door hangers

7a and 7b support the

door panels

6a and 6b upward while being movable in the opening/closing direction.

The pulley 8a is rotatably provided at the end of the door rail 5 on the side of the door panel 6a. The pulley 8b is rotatably provided at the end of the door rail 5 on the door panel 6b side. The door rope 9 is an endless wire. The door rope 9 is wound around each of the

pulleys

8a and 8b. The door rope 9 includes an upper door rope 9a located above and a lower door rope 9b located below between the

pulleys

8a and 8b. A part of the upper door rope 9a is fixed to the door hanger 7a. A part of the lower door rope 9b is fixed to the door hanger 7b.

The door closer 10 includes a closer weight 11, a closer pulley 12 and a closer rope 13.

For example, the closer weight 11 is a metal weight. The closer weight 11 is provided inside the door panel 6a. The closer weight 11 can move vertically inside the door panel 6a.

The closer pulley 12 is positioned above the closer weight 11 . The closer pulley 12 is rotatably fixed to the door hanger 7a.

For example, the closer rope 13 is a wire. One end of the closer rope 13 is fixed to the closer weight 11 . The other end of the closer rope 13 is fixed to the door hanger 7b. An intermediate portion of the closer rope 13 is wound around the closer pulley 12 . The closer rope 13 is redirected by the closer pulley 12 . Specifically, the portion of the closer rope 13 between the door hanger 7b and the closer pulley 12 faces the horizontal direction. A portion of the closer rope 13 between the closer pulley 12 and the closer weight 11 faces the vertical direction.

The door closer 10 applies force in the closing direction, which is the direction in which the door closes, to the door panel 6a and the door panel 6b. The closer weight 11 pulls one end of the closer rope 13 downward by gravity. That is, the closer weight 11 generates tension in the closer rope 13 . The closer pulley 12 receives from the closer rope 13 horizontal force generated by turning the closer rope 13 from the vertical direction to the horizontal direction. Specifically, the closer pulley 12 receives from the closer rope 13 a force for moving the door panel 6a in the closing direction. The other end of the closer rope 13 exerts a horizontal force on the door hanger 7b by tension. Specifically, the closer rope 13 applies force to the door hanger 7b to move the door panel 6b in the closing direction.

The brake 20 is fixed to the door hanger 7a. The horizontal part of the closer rope 13 passes through the interior of the brake 20 .

The brake 20 is a braking device that generates a force that brakes the movement of the

door panels

6a and 6b. For example, the brake 20 is a device that can grip the closer rope 13 . The brake 20 has terminals for operation. The brake 20 operates by applying a voltage to its terminals. The damper 20 has a polarity with respect to the applied voltage. Specifically, the brake 20 does not operate when current flows in the first direction due to the application of voltage in the first direction. The brake 20 operates when a current flows in the second direction due to the application of voltage in the second direction.

The inductor 30 is electrically connected to the terminals of the brake 20 . When the

door panels

6a, 6b move, the inductor 30 generates an induced electromotive force corresponding to the direction of movement of the

door panels

6a, 6b. The inductor 30 applies the induced electromotive force to the terminals of the brake 20 . The inductor 30 has a magnet 31 , a coil 32 and a switch 33 .

For example, the magnet 31 is a permanent magnet. The magnet 31 is fixed to the horizontally oriented portion of the closer rope 13 . The magnet 31 can move horizontally following the movement of the closer rope 13 .

The coil 32 is formed by winding a copper wire. The coil 32 has a winding portion 32a and ends 32b and 32c. The winding portion 32a is fixed to the door hanger 7a. The winding portion 32 a is provided at a position affected by the magnetic field of the magnet 31 . Specifically, the winding portion 32a is provided so as to surround a portion of the closer rope 13 facing in the horizontal direction. At this time, the winding portion 32a surrounds the path along which the magnet 31 can move.

The end portion 32b is one end portion of the winding portion 32a. End 32b is electrically connected to a terminal of brake 20 . The end portion 32c is the other end portion of the winding portion 32a. End 32c is electrically connected to a terminal of brake 20 .

For example, the switch 33 is an electromagnetic contactor. For example, switch 33 is electrically connected to the power source of elevator system 1 . The switch 33 has a contact 33a. Contact 33a is connected in series between a terminal of brake 20 and end 32c. When power is supplied to the switch 33, the contact 33a remains open. When switch 33 is not powered, contact 33a remains closed. In this case, a series closed circuit is formed by the terminal of the brake 20, the end portion 32b, the winding portion 32a, the end portion 32c and the contact 33a. The closed circuit is a closed circuit between the damper 20 and the inductor 30 .

When the elevator system 1 operates normally, the car door device (not shown) opens the landing door device 4 of the landing 3 where the passenger has arrived. In this case, the landing door device 4 receives a force in the opening direction for opening the

door panels

6a and 6b from the car door device. The

door panels

6a and 6b move in the opening direction against the force from the door closer 10 in the closing direction. At this time, the door panel 6a and the door panel 6b are synchronously moved by the door rope 9. As shown in FIG.

When the

door panels

6a and 6b move in the opening direction, the horizontal portion of the closer rope 13 moves relative to the door hanger 7a in the direction toward the door hanger 7b. At this time, the magnet 31 relatively moves toward the door hanger 7b with respect to the door hanger 7a.

After that, the car door device applies a force in the opening direction to the landing door device 4 to keep the landing door device 4 open. After that, the car door device closes while applying a force in the direction in which the landing door device 4 opens. The landing door device 4 closes in synchronization with the car door device. At this time, the landing door device 4 is slowly closed by the resultant force of the force received from the car door device and the force received from the door closer.

When the

door panels

6a and 6b move in the closing direction, the horizontal portion of the closer rope 13 moves relative to the door hanger 7a in the direction opposite to the door hanger 7b. At this time, the magnet 31 moves relative to the door hanger 7a in the opposite direction to the door hanger 7b.

When the elevator system 1 is in normal operation, the switch 33 is energized. In this case, the switch 33 maintains the open state of the contact 33a. Since the contact 33a of the switch 33 is open, a closed circuit between the brake 20 and the inductor 30 is not formed. When the

door panels

6a, 6b move in the closing direction or the opening direction, the magnet 31 moves inside the winding portion 32a of the coil 32 in the corresponding direction. However, no closed circuit is formed, so no induced electromotive force is applied to the brake 20 .

If the elevator system 1 loses power while the car door device is opening the hall door device 4, power to the switch 33 is cut off. The contact 33a is closed. Also, power to the car door device is cut off. The car door device does not apply force to the hall door device 4 in the opening direction. In this case, the landing door device 4 is closed by the closing direction force from the door closer 10 . Specifically, the

door panels

6 a and 6 b move in the closing direction while receiving force from the door closer 10 .

The magnet 31 moves inside the winding portion 32a of the coil 32 in a direction corresponding to the closing direction of the door panel 6a. In this case, an induced electromotive force is generated in the coil 32 in the second direction. The induced electromotive force in the second direction is applied to the terminals of the brake 20 . When an induced current in the second direction due to the induced electromotive force in the second direction flows, the brake 20 operates. The brake 20 brakes the movement of the

door panels

6a and 6b in the closing direction. Specifically, when the induced electromotive force in the second direction is applied, the brake 20 grips the closer rope 13 . The brake 20 applies a force to the closer rope 13 to brake the movement of the

door panels

6a and 6b in the closing direction. At this time, the door rope 9 shares the braking force acting on each of the

door panels

6a and 6b. Therefore, the

door panels

6a and 6b are slowly closed by the resultant force of the force from the door closer 10 and the braking force from the brake 20. As shown in FIG.

When a person opens the landing door device 4 while the elevator system 1 is out of power, the person applies force to the

door panels

6a and 6b in the opening direction. The

door panels

6a, 6b move in the opening direction. The magnet 31 moves inside the winding portion 32a of the coil 32 in a direction corresponding to the opening direction of the door panel 6a. In this case, an induced electromotive force is generated in the coil 32 in the first direction opposite to the second direction. An induced electromotive force in the first direction is applied to the terminals of the brake 20 . When an induced current flows in the first direction due to the induced electromotive force in the first direction, the brake 20 does not operate. That is, the brake 20 does not generate a force that brakes the movement of the

door panels

6a and 6b in the opening direction. The

door panels

6a and 6b are opened by the resultant force of the force from the door closer 10 and the force from the person.

Next, the induced current flowing in the closed circuit will be described with reference to FIG.
FIG. 2 is a diagram showing a closed circuit formed in the elevator door device according to the first embodiment.

When the door panel 6a (not shown in FIG. 2) moves in the closing direction, the magnet 31 moves in the direction indicated by the arrow X. When the magnet 31 moves in the direction of the arrow X, an induced electromotive force is generated in the coil 32 in the second direction.

When an induced electromotive force is generated in the second direction, an induced current in the second direction indicated by arrow Y flows in the closed circuit. In this case, the brake 20 is activated.

For example, the door panel 6a then stops at the fully closed position. In this case the magnet 31 stops inside the coil 32 .

Although not shown, when the door panel 6a moves in the opening direction from the fully closed position, the magnet 31 moves from inside the coil 32 in the direction opposite to the X direction. An induced electromotive force is generated in the coil 32 in the first direction. In this case, the brake 20 does not operate.

According to Embodiment 1 described above, the landing door device 4 which is a door device includes the brake 20 and the inductor 30 . In a power failure state, when the

door panels

6a and 6b move in the closing direction, the brake 20 generates a force that brakes the movement of the

door panels

6a and 6b. Therefore, it is possible to prevent the

door panels

6a and 6b from closing at high speed by the door closer 10 during a power failure. As a result, the noise, impact, etc. generated by the collision of the

door panels

6a and 6b at high speed can be suppressed. Further, when the

door panels

6a and 6b move in the opening direction in a power failure state, the brake 20 does not generate a force to brake the movement of the

door panels

6a and 6b. In this case, the person only needs to apply a force to the

door panels

6a, 6b against the door closer 10 when opening the

door panels

6a, 6b. Therefore, the door can be prevented from closing at a high speed during a power failure, and can be easily opened even during a power failure.

In addition, the inductor 30 includes a magnet 31 and a coil 32. Therefore, the inductor 30 can apply an induced electromotive force to the brake 20 in a direction corresponding to the direction in which the

door panels

6a and 6b move. Also, if the inductor 30 is a braking device that changes the braking force according to the power supplied, the braking force can be adjusted by changing the number of turns of the coil 32 . By changing the position where the coil 32 is provided, the position at which the braking force is generated can be adjusted.

In addition, the inductor 30 includes a contact 33a of the switch 33. The contact 33a leaves the brake 20 and the inductor 30 electrically disconnected when the elevator system 1 is not in a power outage. The contact 33a electrically connects the inductor 30 with the brake 20 only in the event of a power failure of the elevator system 1 . As a result, when the elevator system 1 performs normal operation, it is possible to prevent the brake 20 from applying a braking force to the

door panels

6a and 6b. For example, it is possible to suppress excessive energy consumption during normal operation, as compared with the case where a braking device that always applies a force in the opening direction is installed.

It should be noted that the method by which the brake 20 brakes the movement of the

door panels

6a and 6b in the closing direction is not limited to the method of gripping the closer rope 13. For example, brake 20 comprises a brake pad. The brake 20 may press the brake pad against the door rail 5 when the induced electromotive force in the second direction is applied. The brake 20 may use the frictional force between the door rail 5 and the brake pad as the braking force. In this case, braking force is applied to the door panel 6a. The door panel 6 b receives the braking force through the door rope 9 .

Note that the brake 20 may be provided to brake the movement of the closer weight 11 instead of the closer rope 13 . In this case, the brake 20 may be provided on the door panel 6a.

Note that the magnet 31 and the coil 32 may be provided on a portion of the closer rope 13 facing the vertical direction.

It should be noted that the brake 20 and the inductor 30 may be applied to a single side opening type door apparatus instead of a double side opening type door apparatus.

Embodiment 2.
FIG. 3 is a plan view showing an outline of an elevator door device according to Embodiment 2. FIG. The same reference numerals are given to the same or corresponding parts as those of the first embodiment. Description of this part is omitted.

As shown in FIG. 3, the magnet 31 is provided inside the closer weight 11 in the second embodiment. A part or the whole of the closer weight 11 may be composed of the magnet 31 .

The winding portion 32a of the coil 32 is arranged around the path along which the magnet 31 moves. The winding portion 32a is fixed to the door panel 6a. Although not shown, the

ends

32b and 32c are electrically connected to the terminals of the brake 20 via the contacts 33a as in the first embodiment.

When the

door panels

6a, 6b move in the opening or closing direction, the closer weight 11 moves upward or downward. The magnet 31 moves following the closer weight 11 . At this time, the magnet 31 moves in the direction corresponding to the closing direction or the opening direction of the

door panels

6a and 6b inside the winding portion 32a. When the elevator system 1 has a power failure, the inductor 30 generates an induced electromotive force similar to that of the first embodiment.

According to the second embodiment described above, the magnet 31 is fixed to the closer weight 11. The coil 32 is provided so as to surround part of the path along which the closer weight 11 moves. Therefore, the inductor 30 can apply an induced electromotive force to the brake 20 in a direction corresponding to the direction in which the

door panels

6a and 6b move.

Also, part or all of the closer weight 11 may be a permanent magnet. Therefore, unlike the first embodiment, it is not necessary to provide the magnet 31 . As a result, the dielectric 30 can be provided at low cost. Also, maintenance work for confirming that the magnet 31 is fixed can be omitted.

Embodiment 3.
FIG. 4 is a diagram showing a closed circuit formed in the elevator door device according to the third embodiment. The same reference numerals are given to the same or corresponding parts as those of the first embodiment. Description of this part is omitted.

As shown in FIG. 4 , in Embodiment 3, the damper 20 includes a damping body 21 and a diode 22 .

The braking body 21 is a braking device that has no polarity with respect to the electric signal that operates. Specifically, when a current flows through the terminals of the damping body 21, the damping body 21 operates in the same manner as the damper 20 of the first embodiment regardless of the direction of the current.

The diode 22 is connected in series between the terminal of the damping body 21 and the contact 33a. Diode 22 allows current to pass only in the second direction. When a voltage is applied in the first direction, the diode 22 increases its resistance to substantially prevent the flow of current in the first direction.

When an induced electromotive force is generated in the coil 32 in the second direction, the resistance value of the diode 22 does not increase. In this case, an induced current flows in the closed circuit in the second direction. The braking body 21 generates a force for braking movement of the

door panels

6a, 6b (not shown in FIG. 4).

When an induced electromotive force is generated in the coil 32 in the first direction, an induced electromotive force in the first direction is generated in the closed circuit. At this time, the resistance value of the diode 22 increases. Therefore, substantially no induced current flows in the closed circuit in the first direction. Specifically, the induced current in the first direction does not exceed the current value required for the operation of the braking body 21 . In this case, the braking body 21 does not operate. That is, the damper 20 has a polarity substantially by providing the diode 22 .

According to Embodiment 3 described above, the damper 20 includes the damping body 21 and the diode 22 . The braking body 21 is a braking device that has no polarity with respect to the electrical signal that operates. The diode 22 allows only the induced current in the second direction to flow through the braking body 21 . Therefore, the brake 20 can be configured using a brake device that does not have polarities.

As described above, the elevator door device according to the present disclosure can be used in an elevator system.

1 elevator system, 2 hoistway, 3 landing, 4 landing door device, 5 door rail, 6a, 6b door panel, 7a, 7b door hanger, 8a, 8b pulley, 9 door rope, 9a upper door rope, 9b lower door rope, 10 door closer , 11 closer weight, 12 closer pulley, 13 closer rope, 20 brake, 21 brake body, 22 diode, 30 dielectric, 31 magnet, 32 coil, 32a winding, 32b, 32c end, 33 switch, 33a contact

Claims

A force provided on a door hanger that hangs a door panel, does not generate a force that brakes the movement of the door panel when voltage is applied in a first direction, and brakes the movement of the door panel when a voltage is applied in a second direction. a brake that generates
electrically connected to the brake, applying the voltage in the first direction to the brake when the door panel moves in the opening direction while the elevator is in a power failure state, and applying the voltage in the first direction to the door panel in a power failure state of the elevator; a dielectric that applies a voltage in the second direction when moves in the closing direction;
Elevator door device with.
The dielectric is
a magnet provided to move relative to the door panel in a direction corresponding to the direction of movement of the door panel;
a coil that encloses at least part of the path along which the magnet moves, is provided so as not to change its position relative to the door panel, and is electrically connected to the brake;
with
When the magnet moves in the direction corresponding to the opening direction of the door panel, the induced electromotive force in the first direction generated by the coil is applied to the brake, and the magnet moves in the direction corresponding to the closing direction of the door panel. 2. The elevator door apparatus according to claim 1, wherein an induced electromotive force in said second direction generated in said coil is applied to said brake.
a closer weight vertically movable inside the door panel;
a closer rope having one end fixed to the closer weight and applying a load of the closer weight to the door hanger to apply a closing direction force to the door panel;
with
the coil is fixed to the door hanger to enclose at least a portion of the closer rope;
3. The elevator door apparatus according to claim 2, wherein the magnet is fixed to the closer rope and moves relative to the door panel together with the closer rope when the door panel moves.
a closer weight vertically movable inside the door panel;
a closer rope having one end fixed to the closer weight and applying a load of the closer weight to the door hanger to apply a closing direction force to the door panel;
with
the coil surrounds at least part of a path along which the closer weight moves inside the door panel;
3. The elevator door apparatus according to claim 2, wherein the magnet is provided on the closer weight and moves relative to the door panel together with the closer weight when the door panel moves.
a closer weight formed by a permanent magnet and provided to be vertically movable inside the door panel;
a closer rope having one end fixed to the closer weight and applying a load of the closer weight to the door hanger to apply a closing direction force to the door panel;
with
The dielectric is
a coil that encloses at least part of the path along which the closer weight moves, is provided so as not to change its position relative to the door panel, and is electrically connected to the brake;
with
When the closer weight moves in the direction corresponding to the opening direction of the door panel, the induced electromotive force in the first direction generated by the coil is applied to the brake, causing the closer weight to move in the direction corresponding to the closing direction of the door panel. 2. The elevator door apparatus according to claim 1, wherein an induced electromotive force in the second direction generated by the coil is applied to the brake when the closer weight moves.
The dielectric is
provided between the brake and the end of the coil, and maintaining an open state when the elevator is not in a power failure state so that the brake and the coil are not electrically connected, and the elevator a contact that maintains a closed state when there is a power failure, thereby electrically connecting the brake and the coil;
The elevator door apparatus according to any one of claims 2 to 5, comprising:
The brake is
a braking body provided on a door hanger for hanging a door panel and generating a force for braking the movement of the door panel when current flows;
The inductor and the damping body are electrically connected, and when the voltage in the first direction is applied, the current in the damping body does not flow in the first direction, and the voltage in the second direction is applied. a diode that allows current to flow in the second direction in the damping body when
The elevator door apparatus according to any one of claims 1 to 6, comprising: