JPH0511274Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field> The present invention relates to an elevator door control device.

<Prior Art> An elevator is equipped with a door control device, and the door control device controls the door to safely close the door while the elevator is traveling and open the door when the elevator reaches the floor. Additionally, while the elevator is running, users are prevented from opening the car door from inside the car.
The door control device is designed to operate to ensure the safety of users.

Furthermore, the door control device is designed to stop or reverse the door when an external force greater than the normal door opening/closing force is applied to the door, thereby preventing accidents such as getting caught or colliding with the door. . Here, stopping and reversing means that the door opens when closing the door, and closes when opening the door.

An automatic car door that controls the opening and closing of such doors is proposed in Japanese Patent Publication No. 60-47196.
In this proposed method, to prevent passengers from opening the car doors from inside the car while the train is moving, a current for constantly closing the doors is supplied to the door opening/closing motor when the doors are in the closed state.

In the proposed system, although not shown, a door opening/closing motor is disposed on the top of the car, and a pulley rotated by the door opening/closing motor is attached to the top of the car. This pulley and the door of the car are connected by a cam link, a connecting link, a main lever, and a link, and the door is configured to open and close by rotation of the pulley.

That is, one end of the main lever is rotatably attached to the top of the car, the other end of the main lever is rotatably connected to one end of a link, and the other end of this link is rotatably attached to the door. ing. Further, one end of the connecting link is rotatably attached to an intermediate position of the extension of the main lever, and the other end of the connecting link is rotatably connected to one end of a cam link coaxially attached to the pulley. There is.

A groove is formed at the other end of the cam link, and rising locking portions are provided at both ends of the groove. A roller, which is guided by a leaf spring whose end is fixedly disposed on the pulley, is fitted into the groove with a constant pressure. Furthermore, the leaf spring is pressed toward the cam link by a compression spring fixed to the pulley.

In the proposed method with such a configuration, the pulley rotates as the door opening/closing motor rotates, and the main lever is rotated via the connecting link by the cam link that rotates as the pulley rotates. It rotates around one end attached to the top of the car. As the main lever rotates, a link connected to the other end of the main lever moves to open and close the door in accordance with the rotational direction of the door opening/closing motor.

As mentioned above, when the door is closed, the electric current for closing the door is always flowing through the motor for opening and closing the door.
The door is biased toward the closed door, and a safety measure is taken to prevent passengers from manually opening it from inside the car during operation.

<Problems to be solved by the invention> In the method proposed in the above-mentioned Japanese Patent Publication No. 60-47196, the current for closing the door continues to flow through the door opening/closing motor when the door is closed, so the pulley is forced to move counterclockwise. It is given rotational force.

For this reason, the roller is pressed against the locking portion of the cam link, the leaf spring is slightly warped, and the cam link is also slightly deformed. From this state, when the car lands on the floor and a current is suddenly applied to the door opening/closing motor, the leaf spring and cam link rapidly deform and recover, and the roller moves in the groove and returns to the equilibrium position. The series of engagements occur simultaneously and considerable noise is generated from the cam linkage mechanism.

The present invention was made in view of the current state of elevator door control devices as described above, and its purpose is to reduce the noise generated from the cam link mechanism of the door and the moving door when landing on the floor. The purpose of this invention is to provide a door control device.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention applies a door-closing current to the car door opening/closing motor when the elevator car is running, so as to close the car door. A door control device for an elevator that deviates in the door closing direction includes a detection means for detecting a position near the landing of the car, and a detection means that cuts off the current for closing the door upon detection of the detection means, The control means supplies a current for closing the door to the motor for opening and closing the door.

<Operation> According to the present invention, when the detection means detects the position near the landing of the car, the control means cuts off the door closing current supplied to the door opening/closing motor at that position. .

Therefore, at a position near the landing of the car, the cam link mechanism of the door generates noise due to the deformation recovery of the leaf spring and the cam link, and the movement and engagement of the rollers.

Next, when the car lands on the floor, a current for opening the door is supplied to the door opening/closing motor by the control means, so that the door moves in the opening direction, and noise is generated due to the movement.

In this way, the noise generated when the car lands on the floor and when the door opens is generated in two parts, so each noise is reduced.

<Example> Hereinafter, an example of the present invention will be described in detail using FIGS. 1 and 2.

Here, FIG. 1 is a circuit diagram showing the configuration of the main part of the embodiment, and FIG. 2 is a time chart showing the opening/closing operation of the door in the embodiment.

As shown in Fig. 1, a contact 5Ta, a contact 2b1 and a door closing relay 1 are connected between DC power terminals P and N.
are connected in series with each other and in parallel with contact 5Ta,
A series connection circuit of the contact 3a1 and the contact 7b is connected. Similarly, between DC power terminals P and N, contact 7a, contact 3b1, contact 1b, door opening relay 2
and contact OLS are connected to each other in series.

Also, between the DC power terminals P and N, a contact 3b2,
Contact point 2b2 and timer 5T are connected in series with each other. Similarly, between DC power terminals P and N,
The stator 6Fa2 of the floor selector, the mover 6Ma of the floor selector, the contact 4a, and the relay 7 are connected in series with each other, and the contact 3b3 is connected in parallel to the contact 4a. This movable element 6Ma is connected to a DC power supply terminal P, and can also come into contact with stators 6Fa1 and 6Fa3 provided on each floor as the car moves.

Here, contact 1b is a contact of relay 1 for closing the door, contact 2b1, contact 2b2, contact 2b3 is a contact of relay 2 for opening door, contact 3a1, contact 3b1, contact 3b
3 is a contact point of a relay (not shown) that is energized while the car is running. In addition, contact 4a is a contact of a relay (not shown) that is energized from the time when the car starts decelerating until the car lands on the floor, and 5Ta is a contact that starts counting from the end of opening the door, and for a predetermined time ( This is a contact point for a timer 5T that operates after 3 seconds, for example.

Furthermore, the contact 7b and the contact 7a are the contacts of the relay 7, and the contact OLS is, when the door opening relay 2 is energized,
This is a contact that mechanically turns OFF at the end of the door opening.

In addition, mover 6Ma and stator 6Fa1 to 6Fa3
The contact point is ±200mm centered on the implantation level.

In the embodiment, stators are shown for only the first to third floors.

In an embodiment with such a configuration, the contact 4a1
constitutes the main part of the detection means, and the stator 6Fa1~
6Fa3, mover 6Ma, relay 7, contact 7b, and relay 1 constitute the main part of the control means.

Next, the operation of the embodiment of the present invention will be explained.

To explain the case where the car starts traveling from the first floor and lands on the second floor, 1
When the door reaches the opening end on the floor and the contact OLS turns OFF, the door opening relay 2 is deenergized and the contacts 2b1 and 2b
2 is turned on.

In addition, since the car is stopped, contact 3b2
is ON, so when timer 5T turns ON, contact 5Ta turns ON. Contact 5Ta is ON
Then, DC power supply terminal P, contact 5Ta, contact 2
b1, a closed circuit is formed by the door-closing relay 1 and the DC power supply terminal N, and the door-closing relay 1 is activated at time t ₁ in FIG.
The door is energized and begins to close, and the closing of the door ends at time _t2 .

Then, when the car starts traveling, the contact point 3a1
is turned ON and the car is 200 mm away from the first floor. At time A in FIG. 2, the movable element 6Ma moves away from the stator 6Fa1, so the relay 7 is deenergized. When relay 7 is deenergized, contact 7b turns on
Therefore, a closed circuit is formed by the DC power terminal P, the contact 3a1, the contact 7b, the contact 2b1, the door closing relay 1, and the DC power terminal N.

Therefore, even if the contact 5Ta is turned off, the door-closing relay 1 maintains the energized state, and the door-closing current continues to be supplied to the door opening/closing motor (not shown). Therefore, although not shown, a cam link is attached to a pulley rotated by the door opening/closing motor via a leaf spring, and a roller that is biased by a compression spring is coaxially attached to the pulley. In this state, the rotational force of the pulley is transmitted to the door via the cam link, and a force is applied to the door in the direction of closing the door.

As shown in Fig. 2, when the car that has been accelerated and moves at a constant speed reaches the deceleration point at time B,
Contact point 4a turns on, the car decelerates further, and when movable element 6Ma contacts stator 6Fa2 at time C, relay 7 is energized.

When the relay 7 is energized, the contact 7b is turned OFF, so that the door-closing relay 1 is de-energized and the supply of door-closing current to the door opening/closing motor is cut off.
Therefore, in the cam link mechanism of the door, the leaf spring and the cam link are deformed and restored, the roller is moved, and the groove is engaged with the equilibrium position, and noise is generated due to these operations.

When the car completely stops at time _t3 in FIG. 2, contacts 3b1, 3b2, and 3b3 are turned ON, contact 4a is turned OFF, and DC power terminal P,
A closed circuit is formed by the contact 7a, the contact 3b1, the contact 1b, the door opening relay 2, the contact OLS, and the DC power terminal N, and the door opening relay 2 is energized. By energizing the door opening relay 2, the door opening current is supplied to the door opening/closing motor, and the door is opened.At time D in Fig. 2, the door reaches the open end, and the contact OLS turns OFF. Then, the door opening relay 2 turns OFF, and the door opening operation ends.

Along with this door opening operation, noise is generated again due to the movement of the door.

In this way, the door-closing relay 1 is deenergized by the energization of the relay 7 immediately before the car lands on the floor, and the supply of the door-closing current to the door opening/closing motor is cut off, so that the cam link mechanism The noise associated with the return operation is first generated from the section. Next, the car lands on the floor, the door-opening relay 2 is energized, the door opens, and noise is generated as the door moves.

These noises are not generated all at once but are generated in parts, and the noise from the cam link mechanism also has a recovery time between the interruption of the current for closing the door and the supply of current for opening the door. Therefore, the overall noise when the hydraulic elevator door is opened can be significantly reduced.

In addition, in the example, the floor selector selects the 20th floor of the floor.
Although the description has been given of the device that operates in the vicinity of mm, the present invention is not limited to the embodiment, and can be set at the optimal position for noise reduction according to the structure of the hydraulic elevator.

In addition, although the embodiment described the case where the cam link mechanism is used to open and close the door, this is not limited to the embodiment, and in a method in which a current for closing the door is sent to the motor for opening and closing the door while the door is running, it is possible to Since the drive mechanism is deformed by the force of , the present invention can be applied to any structure of this type.

<Effects of the invention> As explained in detail above, according to the invention,
Significantly reduces the noise generated when the door opens,
It is possible to provide a hydraulic elevator that can be operated comfortably.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of a main part of an embodiment of the present invention, and FIG. 2 is a time chart showing the opening/closing operation of a door in the embodiment of the present invention. 1... Relay for closing the door, 2... Relay for opening the door, 5
T...Timer, 6Ma...Movable element, 6Fa1,6
Fa2, 6Fa3...Stator, 7...Relay.

Claims (1)

[Scope of utility model registration request] When the elevator car is running, an elevator door control device that applies a closing current to the car door opening/closing motor and biases the car door in the closing direction is configured to control a position near the landing of the car. and a control means that cuts off the current for closing the door upon detection by the detection means and supplies the current for opening the door to the door opening/closing motor when the car lands on the floor. Features: Elevator door control device.