JP2504275B2 - Elevator door device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door device that opens and closes an entrance / exit of an elevator, and more particularly to improvement of door opening / closing speed control.

[Prior Art] A door closing device for an elevator is installed on an elevator car.
A door-closing machine with an electric motor, a speed control switch, and an engagement mechanism for the elevator car door and the landing door, and the machine room control panel controls this electric motor to open and close the elevator car door and the landing door synchronously. Is. Currently, most door-closing machines used are those that open and close the elevator car door by the door-closing machine above the elevator car, and simultaneously open and close the landing door by the gripping mechanism. As a conventional elevator door device of this type, a technique disclosed in JP-A-63-123791 can be mentioned.

FIG. 5 is a front view of a conventional hall door seen from the hoistway side, FIG. 6 is a front view of a conventional elevator car door seen from the hall side, and FIG. 7 is a cross-sectional view showing a conventional elevator door device. FIG. 8 is a characteristic diagram showing a door opening speed pattern of a conventional elevator car door, and FIG. 9 is a characteristic diagram showing a door closing speed pattern of a conventional elevator car door.

In the figure, 1 is a hoistway, 2 is an entrance / exit of a hall leading to the hoistway 1, 3 is provided at an entrance / exit 2 of the hall, and an upper end of the door rail 4 fixed to a wall of the hoistway 1 can be laterally moved The landing doors 5 are erected on the landing doors 3, and the supporting plates are fixed to the landing doors 3 with bolts 6 through elongated holes 5a elongated in the moving direction. Numerals 7 and 8 are pivotally supported on the supporting plate 5 at predetermined intervals. The engaging element is a roller that protrudes toward the hoistway 1 side. 9 is an elevator car disposed in the hoistway 1, 10 is an entrance / exit of the elevator car 9, 11 is an entrance / exit 10 of the elevator car 9, and a lateral direction of a door rail 12 whose upper end is fixed to the elevator car 9 An elevator car door movably installed on the inside, and 13 is formed in an L-shaped cross section,
An engaging plate fixed to the elevator car door 11 so as to project toward the entrance / exit 2 side of the landing, and 14 is arranged in parallel with the engaging plate 13, and one end of which is an engaging plate pivotally attached to the elevator car door 11. 15 is a drive machine fixed to the upper part of the entrance / exit 10 of the elevator car 9, 16 is an encoder fixed to the rear shaft end of the drive machine 15, 17 is the power of the drive machine 15, the elevator car door 11 and the engaging plate It is a link mechanism that transmits to 14.

Next, the operation of the conventional elevator door device configured as described above will be described.

When the elevator car 9 moves up and down, the hall door 3 and the elevator car door 11 are fully closed, and the elevator car door 11
The engaging plate 13 and the engaging plate 14 are respectively the engaging elements 8 of the landing door 3.
And away from the engaging element. That is, when the elevator car 9 passes through the landing, the elevator 7, the engager 8, the engage plate 13, and the engage plate 14 can travel without coming into contact with each other. At this time, a gap G is formed between the engagement element 8 and the engagement plate 13 as shown in FIG.

Next, when the elevator car 9 lands on the landing, the drive machine
15 rotates and elevator car door 11 via link mechanism 17
Is opened. At this time, the engagement plate 14 rotates and the engagement plate 1
3, the engaging plate 14 contacts the engaging elements 8 and 7, respectively, and holds them. Then, in this state, the elevator car door 11 moves in the door opening direction, so that the hall door 3 also moves in the door opening direction in conjunction with this.

On the contrary, when the door is closed from the open state, the operation is opposite to the above, and the hall door 3 also moves in the door closing direction in conjunction with the movement of the elevator car door 11, and the elevator car door 11 and the hall door 3 When is completely closed, the engagement plate 14 is rotated via the link mechanism 17 to release the engagement between the engagement plate 13 and the engagement element 8 and between the engagement plate 14 and the engagement element 7.

By the way, in order to start the door, after the elevator car door 11 moves through the gap G between the engaging element 8 and the engaging plate 13, the engaging plate 13 contacts the engaging element 8 and the hall door 3 starts to open. At this time, a collision sound is generated when the engagement plate 13 contacts the engagement element 8.
In order to suppress this collision noise and maintain quietness when the door is opened, it is necessary to open the elevator car door 11 at a low speed before and after the collision. On the other hand, when the door is closed, the hall door 3 precedes the elevator car door 11 by the gap G to complete the door closure.
At this time, in order to suppress the noise that the hall door 3 collides with the contact surface of the entrance / exit 2 of the hall, it is necessary to close the door at a low speed from the front by at least the length G before fully closing. Therefore, the opening / closing speed of the elevator car door 11 is an encoder directly connected to the rear shaft end of the drive machine 15 according to the speed patterns shown in FIGS. 8 and 9.
It is controlled by 16 output rotation distance and rotation speed.

[Problems to be Solved by the Invention] Since the conventional elevator door device is configured as described above, the gap G between the engagement plate 13 and the engagement element 8 is preferably narrow in terms of door opening / closing performance. It is desirable to be able to open and close quickly, but
When it becomes narrow, the engagement plate 13, the engagement plate 14 and the engagement element 8, the engagement element 7
May collide with. In addition, there are variations in the installation positions of the engaging elements 7 and 8 on each floor, and the size of the gap G differs depending on each floor. Therefore, in the opening / closing pattern of the door in FIGS. 8 and 9, it is necessary to set the low speed traveling range of C in FIG. 8 and D in FIG. 9 in consideration of the maximum value of the variation in the gap G. .
For this reason, the low-speed traveling range becomes long, the opening and closing time of the door becomes long, and the operating rate of the elevator decreases. On the contrary, when the low-speed travel area is shortened, the collision speed between the engagement plate 13 and the engagement element 8 when the door is opened and the collision speed between the landing door 3 and the contact surface of the doorway 2 of the landing when the door is closed are increased. A collision noise was generated, and it was impossible to open and close the door quietly.

As another prior art, there is a technology disclosed in Japanese Patent Publication No. 59-17718.

This technique is provided with a drive device for driving the door of the hall just before the fully closed position in the door closing direction and an operation command device for operating the door when abnormal running resistance such as wind pressure acts on the door of the hall. It is designed to drive the doors of the landing hall fully closed against the running resistance, which causes the elevator door operation failure because the hall doors do not fully close due to abnormal running resistance such as wind pressure from the position just before full closing. This is prevented by a simple drive device that drives the landing door, which is in a disengaged state with the car door from immediately before the fully closed position, to the fully closed position.

However, in this technology, the engagement plate and the engagement element collide with each other, and when the door is opened and closed, the collision speed between the landing door and the contact surface of the entrance and exit of the landing is increased, and a collision noise is generated, resulting in a quiet door. I couldn't open or close.

Therefore, an object of the present invention is to provide an elevator door device that can be opened and closed quietly and quickly.

[Means for Solving the Problems] An elevator door device according to the present invention includes an elevator car door having an engagement plate that is fixed to project out toward the entrance / exit of a hall, and the engagement plate that is arranged on the elevator car door. A landing door provided with a predetermined gap and arranged on both sides, and an engaging member projecting from the elevator car door that abuts the engagement plate when the elevator car door is opened and closed; and the engagement plate and the landing door of the elevator car door. A detector for detecting the size of the gap with the engaging element, and the gap between the engaging plate of the elevator car door and the engaging element of the landing door is determined according to the amount detected by the detector. When decreasing, the opening / closing speed of the elevator car door is controlled according to a door opening / closing speed pattern.

[Operation] In the present invention, the gap between the engaging member of the hall door and the engaging plate of the elevator car door is detected by the detector for each floor. Depending on the output of this detector, the minimum noise required to suppress the collision noise between the engagement element and the engagement plate when the door is opened and the collision noise between the landing door and the contact surface of the entrance and exit of the landing when the door is closed. The low-speed running range of the door is obtained for each floor, and the opening / closing speed is controlled according to this door opening / closing speed pattern. As a result, the door can be quietly opened and closed, and the low speed traveling range can be suppressed to the required minimum, so that the opening and closing speed can be increased.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a cross-sectional view of an elevator door device according to an embodiment of the present invention, FIG. 2 is a characteristic diagram showing a door opening speed pattern of an elevator car door according to an embodiment of the present invention, and FIG. FIG. 6 is a characteristic diagram showing a door closing speed pattern of an elevator car door according to one example. In the figure, the same reference numerals as those in FIG. 7 are the same as or correspond to the conventional constituent parts, and therefore the description thereof will be omitted here.

In the figure, 21 is a detector attached to the engagement plate 13,
The length of the gap G between the engagement plate 13 and the engagement element 8 is detected in a non-contact manner. The output of this detector 21 is sent to the speed control means 22 that controls the opening and closing of the elevator doors, and the
There will be 15 outputs.

Next, the operation of the elevator door device of the present embodiment configured as described above will be described.

When the elevator car 9 arrives at the floor, the detector 21 detects the length of the gap G between the engagement plate 13 and the engagement element 8. Next, the output of this detector 21 is the speed control means of the elevator car door 11.
The door opening speed pattern is set so that the door opening speed becomes low when the elevator car door 11 is opened from the fully closed state to the length of the gap G between the engagement plate 13 and the engagement element 8 and is sent to 22. . This is shown in FIG. That is, the door of the elevator car 9
The gap G between the engagement plate 13 and the engagement element 8 after the door 11 starts to open
At point A, which has been opened for the length of, the speed decreases once, and after passing through it, the speed of door opening increases again. The elevator car door 11 is opened along this door opening speed pattern. This is the speed control means 22 that controls the opening and closing of the elevator doors, etc.
Then, the signal of the detector 21 is input and the speed of the driving machine 15 is controlled accordingly. Specifically, map control of the door opening speed pattern shown in FIG. 2 is performed.

On the other hand, when the door is closed from the full-open control, as shown in FIG. 3, the elevator car door 11 starts to close and the engaging plate 13
When the position of the length of the gap G between the and the engaging element 8 reaches the point B in FIG. 3, the speed becomes low, and then the door closing speed increases again to become the fully closed state. The elevator car door 11 is closed along this door closing speed pattern. At this time, the speed control means 22
Then, the signal from the detector 21 is input, and the map control of the driving machine 15 is performed according to the signal according to the door closing speed pattern shown in FIG.

In this way, by detecting the length of the gap G between the engaging plate 13 and the engaging element 8 for each floor, it is possible to grasp the position where the speed should be lowered and to increase the opening / closing speed in other portions. , The door opening / closing performance can be improved compared to the conventional one.

By the way, in the above embodiment, the lift plate 13 and the lift member 8 are provided.
Although the length of the gap G between and is detected by using the non-contact type detector 21, it is also possible to use a contact type detector as shown in FIG.

FIG. 4 is a cross-sectional view of an elevator door device according to another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 are the same as or correspond to the components of the above-mentioned embodiment.

In the figure, reference numeral 31 is a contact type detector composed of a tape switch or the like attached to the surface of the engagement plate 13 facing the engagement element 8.

In this case, when the elevator car door 11 starts to open and the detector 31 abuts the engaging element 8, the rotation angle of the encoder 16 directly connected to the rear shaft end of the drive machine 15 causes the elevator car door 11 to move. The position is calculated and the door opening speed pattern shown in FIG. 2 is set. Also, when the door is closed, the third
The door closing speed pattern in the figure is set. After that, the elevator car door 11 is opened and closed in the same manner as in the above embodiment.

Thus, the elevator door device of each of the above embodiments,
The gap G between the engaging plate 13 provided on the elevator car door 11 and the engaging element 8 provided on the hall door 3 is detected by the detector 21 or the detector.
The opening / closing speed pattern of the elevator car door 11 is detected according to the output of the detector 21 or the detector 31, and the opening / closing speed is controlled.

The elevator car door 11 having an engagement plate 13 protruding and fixed to the entrance / exit 2 side of the hall, and the engagement plates 13 arranged on the elevator car door 11 are arranged on both sides with a predetermined gap, When the car door 11 is opened or closed, the engaging plate
Landing door 3 provided with projecting engagement elements 7 and 8 that abut against 13, engagement plate 13 of the elevator car door 11, and engagement element of the landing.
A detector 21 that detects the size of the gap between the elevator car door 7 and 8, and the engaging plate 13 of the elevator car door 11 and the engaging members 7 and 8 of the landing are in contact with each other according to the amount detected by the detector 21. When in contact with the elevator car door 11, the speed control means 22 for controlling the opening / closing speed of the elevator car door 11 according to the door opening / closing speed pattern is provided.

Therefore, according to the above embodiment, the detector 21
Alternatively, the detector 31 detects the gap G between the engaging element 8 of the hall door 3 and the engaging plate 13 of the elevator car door 11, and the engaging element 8 and the engaging plate 13 at the time of door opening are detected in accordance with the decreasing output. It is possible to set a low-speed traveling area for each floor to suppress the collision sound of the vehicle and the collision sound of the landing door 3 and the contact surface of the entrance 2 of the landing when the door is closed. Therefore, the opening / closing speed can be increased at other positions, so that the opening / closing can be performed quietly and quickly.

By the way, the detector 21 and the detector 31 of each of the above embodiments,
Although it is attached to the engagement plate 13 of the elevator car door 11, the present invention is not limited to this, and the same effect can be obtained by attaching it to the hall door 3 side.

In addition, the gap G between the engagement plate 13 and the engagement element 8 in each of the above-described embodiments.
Is a detector each time the elevator car 9 arrives at each floor.
However, the present invention is not limited to this, and the gap G between the engagement plate 13 and the engagement element 8 in each floor is previously set.
It is also possible to store the value of the above in the opening and closing control device and set the opening and closing speed pattern for each floor to open and close the door.

During installation of the elevator, the gap G between the engagement plate 13 and the engagement element 8 is measured by the detector 21, the detector 31, etc., and the engagement element 7 and the support plate 5 to which the engagement element 8 is attached are opened and closed. It is also possible to adjust the size of the gap G to be the same for each floor by moving to the floor. According to this, only one opening / closing speed pattern needs to be set.

[Effects of the Invention] As described above, the elevator door apparatus of the present invention determines the size of the gap between the engagement plate of the elevator car door that is fixed so as to project toward the entrance / exit side of the hall and the engaging element of the hall door. A door that slows the opening / closing speed of the elevator car door when the distance between the engaging plate of the elevator car door and the engaging member of the landing is decreased according to the amount detected by the detector. Since it is controlled by the speed control means according to the opening / closing speed pattern, when the door is opened according to the value of the gap between the engaging member of the hall door and the engaging plate of the elevator car door detected by the detector for each floor. It is possible to set a minimum required low speed traveling range of the door for suppressing the collision sound between the engaging element and the engaging plate and the collision sound between the landing door and the contact surface of the entrance and exit of the landing when the door is closed. Therefore, the door can be opened and closed quietly and quickly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an elevator door device according to an embodiment of the present invention, FIG. 2 is a characteristic diagram showing a door opening speed pattern of an elevator car door according to an embodiment of the present invention, and FIG. FIG. 4 is a characteristic view showing a door closing speed pattern of an elevator car door according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of an elevator door device according to another embodiment of the present invention, and FIG. FIG. 6 is a front view of the conventional elevator car door seen from the landing side, FIG. 7 is a cross-sectional view showing a conventional elevator door device, and FIG. 8 is a view of the conventional elevator car door. FIG. 9 is a characteristic diagram showing a door opening speed pattern, and FIG. 9 is a characteristic diagram showing a door closing speed pattern of a conventional elevator car door. In the figure, 3: hall doors, 7, 8: engaging elements 9: elevator car, 13, 14: engaging plate 15: driver, 16: encoder 21, 31: detector, 22: speed control means. In the drawings, the same reference numerals and symbols indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. An elevator car door having an engagement plate projecting and fixed to an entrance / exit side of a hall, and the engagement plates provided on the elevator car door, which are arranged on both sides with a predetermined gap provided therebetween. Detection for detecting a size of a gap between a landing door provided with an engaging member that comes into contact with the engaging plate as the car door opens and closes, and a gap between the engaging plate of the elevator car door and the engaging member of the landing door And a door opening / closing speed that slows down the opening / closing speed of the elevator car door when the gap between the engagement plate of the elevator car door and the engaging member of the landing door decreases in accordance with the amount detected by the detector. And a speed control means for controlling according to a pattern.