JPS6246701Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention provides an opening/closing engagement device for elevator doors;
In particular, the present invention relates to an opening/closing engagement device that engages and integrates a car side door and a floor side door to open and close an elevator door.

[Background of the idea]

As is well known, elevator doors are comprised of a car-side door installed in a car, and a floor-side door installed at a floor entrance of a building. Since one of the floor-side doors needs to be installed on each floor of the building, a large number of them are installed, and it is uneconomical to provide them with an electric drive device for opening and closing the door. For this reason, generally, an electric drive device for opening and closing the door is provided only on the car side, and the floor side door is engaged and integrated with the car side door to open and close it.

Next, for convenience, adjust the opening and closing operations of the elevator door.
The single-door single-door elevator shown in FIG. 1 will be explained. This figure is a schematic front view showing the overall structure of the elevator car. In the figure, 1 is the elevator car side door, 2 is the door shoe attached to the bottom of the car side door 1, 3 is the hanger attached to the top of the car side door 1, 4 is the rail of the hanger 3, 5 is the car frame, 6 The motor 7 installed on the basket frame 5 is a chain sprocket, and the motor 6 and the chain sprocket 7 are connected by a chain 8. Reference numeral 9 denotes a link. The link 9 is rotatably supported by the car frame 5 by a shaft 10, and its upper end is connected to the chain sprocket 7 by a lever 11, and its lower end is connected to a small link 12.
It is connected to the car side door 1 by. And in an elevator configured as above,
When the motor 6 rotates in the clockwise direction shown in the figure, the chain sprocket 7 is also rotated clockwise as shown by the arrow in the figure, and this movement is caused by the lever 11, link 9,
The signal is transmitted to the small link 12 to drive the car side door 1 and the floor side door (not shown) engaged therewith in the door opening direction to the left in the figure, in the case of door closing drive. The above operation is reversed by rotating the motor 6 in the reverse direction.

By the way, as shown in FIGS. 2 and 3, it is necessary to provide a clamping mechanism in the elevator door opening/closing engagement device in order to make the opening/closing operation smooth when opening and closing the elevator door. If this clamping mechanism is not provided, gaps will be created between the floor-side door engaging roller 27, the fixed engaging plate 20, and the movable engaging plate 21 when the door is opened and closed, resulting in rattling when the door is accelerated or decelerated. This causes the door to open and close unsmoothly, and in particular, when the direction of movement of the door is reversed, a large impact force is generated, which can seriously damage the equipment.

20 is an engagement roller 27 attached to the car side door 1
The fixed engagement plate facing the is shown, and its length L in the vertical direction is determined by taking into account the difference in landing of the elevator car,
The length is set in advance to be sufficient to engage with the engagement roller 27 even when the maximum landing difference occurs. The fixed engagement plate 20 also serves as the base of the entire engagement device, and is fixed to the hanger 3 or the car door 1 with bolts 26 or the like. A movable engagement plate 21 rotatably supported by a pair of parallel links 22 is located opposite the fixed engagement plate 20. Furthermore, a rotatable roller 24 is attached to the shaft 23, as shown in FIG.

Next, the clamping operation of the present engagement device will be explained. Figures 1 to 3 show the elevator door when it is fully closed, and the roller 24 attached to the shaft 23 of the engagement device is connected to the fixed cam 15 fixed to the car frame 5 as shown in Figure 5. It is located at the upper point B shown.
The fixed cam 15 guides the roller 24 upward when the car side door 1 is in the fully closed position, and the fixed engagement plate 20 engages the engagement roller 27 to close the floor side door 3. It has a downward slope b toward the door opening side that guides the door downward when starting. Further, as shown in FIG. 3, 27 is an engagement roller provided on the floor side door (not shown), and this engagement roller 27 is used to both fix and move the engagement device when the door is fully closed. A gap g is provided between each of the plywood boards 20 and 21. When the door motor 6 rotates clockwise and the car side door 1 begins to open (toward the left in FIG. 1), the roller moves down the slope of the fixed cam 15 by l dimension as shown by the arrow in FIG. At the lower point C, the engagement roller of the floor side door is completely clamped. In other words, as shown in FIG.
2 stops in a horizontal position. At this time, the shaft 23 is in a positional relationship in which it contacts part a of the fixed engagement plate 20. The above is the door opening operation, but the closing operation is the opposite of the above.

However, in the conventional elevator door opening/closing engagement device, when the door is fully closed, when attempting to manually open the floor side door, the engagement device A installed on the car side door
The roller 24 and the downwardly sloped portion b of the fixed cam 15 come into contact with each other, and the force in the opening direction cannot be transmitted to the car side door, resulting in a phenomenon in which the door does not open. In other words, when a force is applied to the floor side door (not shown) in the opening direction (to the left in the figure) in Fig. 3, the engagement roller 27 installed on the floor side door moves to the left, causing the car to open. It comes into contact with the movable engagement plate 21 of the engagement device A installed on the side door 1, and the movable engagement plate 21 moves counterclockwise in FIG. At this time, the roller 24 provided on the movable engagement plate 21 comes into contact with the upper part of the downward slope b of the fixed cam 15. At this time, at the upper horizontal part of the fixed cam 15,
A horizontal force is applied to move the car side door to the left, but a reaction force is generated in the clockwise direction against the roller 24 at the upper part of the downward slope b.If the slope is 45 degrees, the horizontal part double the force is required for
A greater opening force is required to open the car side door 1 than the floor side door, and it may not be possible to open it manually.

This means that when maintaining the elevator, when a passenger is trapped inside the car due to a power outage, etc., the floor side door cannot be opened manually to rescue the passenger from the outside, that is, from the floor side. , a serious problem.

[Purpose of invention]

An object of the present invention is to provide an elevator door opening/closing engagement device that allows the car side door to be opened manually from the floor side door.

[Summary of the idea]

In order to achieve the above object, the present invention aims to move the floor side door from the door fully closed position in the opening direction and when the movable engagement plate is pushed by the engagement roller, the roller on the movable engagement plate moves to the fixed cam. A fixed stopper is provided to prevent the movable engagement plate from moving before it comes into contact with the downward slope of the movable engagement plate.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIG. FIG. 6 is the same as FIG. 2 (each showing when the elevator door is fully closed), in which a corresponding fixed stopper 31 is installed with respect to the movable engagement plate 21 with a gap g1.

By installing the stopper 31, when the floor side door is manually opened, the engagement roller 27 provided on the floor side door contacts the movable engagement plate 21 of the present engagement device, and the movable engagement plate 21 The roller 24 is the fixed cam 15
Stopper 31 before contacting the upper part of the downward slope b of
The manual door opening force applied to the floor side door can be transmitted to the car side door on a one-to-one basis. Therefore, since no reaction force in the closing direction is generated due to the contact between the fixed cam 15 and the roller 24 as described above, the car side door 1 can be opened manually more than the floor door. Note that 26 in the figure is a bolt.

[Effect of idea]

According to the present invention, when manually opening the car door from the floor side door, the reaction force in the closing direction generated between the roller 24 of the movable engagement plate 21 and the fixed cam 15 is set to 0, and the force is reduced in a 1:1 ratio. It enables transmission, reduces the manual door opening force, allows manual door opening easily, and is highly effective for maintenance and rescuing passengers in emergencies.

[Brief explanation of the drawing]

Fig. 1 is a general schematic diagram of the conventional system, Fig. 2 is an enlarged view of a portion of Fig. 1, Fig. 3 is a plan view of Fig. 2, Fig. 4 is a left side view of Fig. 2, and Fig. 5 is a conventional FIG. 6 is an enlarged view of the fixed cam, and FIG. 6 is a front view showing the elevator door opening/closing engagement device of the present invention. 15...Fixed cam, 20...Fixed engagement plate, 21
...Movable engagement plate, 24...Roller, 31...Stopper.

Claims (1)

[Scope of utility model registration request] An engagement roller supported by a floor-side door of the elevator and protruding toward the car, a fixed engagement plate that is attached vertically to the car-side door and engages with the engagement roller, and a pair of parallel links. a movable engagement plate that is supported on the car side and moves parallel to the fixed engagement plate to pinch the engagement roller together with the fixed engagement plate; a roller provided on the movable engagement plate; A downward slope toward the door opening side that guides the car side door upward when it is in the fully closed position and guides it downward when the fixed engagement plate engages the engagement roller and starts to open the floor side door. a fixed cam having a fixed cam, and when the movable engagement plate is pushed by the engagement roller when the floor side door is moved in the opening direction from the door fully closed position, the roller comes into contact with the downward slope of the fixed cam. An engaging device for an elevator door, characterized in that it includes a fixed stopper at the front for preventing movement of the movable engaging plate.