JP2503741B2 - Door device for elevator - Google Patents

Description

Description: [Industrial application] The present invention relates to an apparatus for interlocking and opening a car door and a landing door of an elevator.

[Prior Art] Fig. 5 is a hoistway side front view of a car door showing a conventional door device of an elevator disclosed in Japanese Patent Laid-Open No. 62-240285.

In the figure, (1) is an elevator car, (2) and (3) are car doors installed at the doorway of the car (1), (4) and (5)
Is a sling which is fixed to the upper ends of the car doors (2) and (3) and has rollers (4a) and (5a) respectively, and (6) is a frame which is fixed to the upper part of the entrance and exit of the car (1), and the sling (4) ( A rail (7) for rolling the rollers (4a) and (5a) of 5) is fixed. (8) is a door driving device fixed on the frame (6), (9) and (10) are door driving link mechanisms for transmitting the driving force of the door driving device (8) to the car doors (2) and (3), (11)
Is an engaging body provided on the left car door (2), and the engaging body (11) is provided with a fixed plate (12) and a movable plate (1) arranged in parallel with each other.
3), the fixed plate (12) is fixed to the car door (2) through the mounting plate (14), and the movable plate (13) is an upper and lower link (15) pivotally attached to the fixed plate (12). Are combined in (16). (17) is a cam pivotally attached to the mounting plate (14) and engaged with the movable plate (13), and (18) is a drive in which one end is pivotally attached to the frame (6) and the other end is fixed to the cam (17). It is a link.

On the other hand, although the hall door is not shown in the drawing, the hall door is installed at the hall entrance and exit, and an engaging member is projectingly provided on the hoistway side of the hall door, so that the fixed plate (12) and the movable plate (13) of the car door (3) are provided. It is located in the space between.

The conventional elevator door device is configured as described above, and when the car (1) passes through the landing, the engaging members of the landing door are the fixed plate (12) and the movable plate (13) of the car door (3). Since there is a gap between them, there is no problem in raising and lowering the car (1).

When the car (1) is landed on the landing, the engaging members of the landing door stop between the fixed plate (12) and the movable plate (13) of the car door (3). Here, when the door drive device (8) operates, the driving force is transmitted to the car doors (2) and (3) through the door drive link mechanisms (9) and (10), and the car doors (2) and (3) are transmitted. Moves toward the door. By this operation, the angles of the drive link (18) and the cam (17) are changed, and the movable plate (13) changes to the fixed plate (1
When approaching to 2), the engaging member of the landing door is gripped between the movable plate (13) and the fixed plate (12). The landing door is opened in association with the car doors (2) and (3).

When the car doors (2) and (3) are closed, the operation is the reverse of the above, and the landing door is closed in conjunction with the car doors (2) and (3).
When the door is closed, the grip of the engaging member of the landing door is released, and the car (1) can run.

[Problems to be Solved by the Invention] In the conventional elevator door device as described above, the movable plate (13) is displaced in accordance with the movement of the car doors (2) and (3), and the fixed plate (12) Since the landing doors are grasped in the meantime to open and close the landing doors in conjunction with each other, the mechanism of the engaging body (11) is complicated, the number of components increases, the cost increases, and the installation Also, there is a problem in that adjustment takes a lot of time.

The present invention has been made to solve the above-mentioned problems, and it is possible to simplify the engaging mechanism, reduce the cost, facilitate the installation and adjustment, and open and close the car door in an elevator. An object is to provide a door device.

[Means for Solving the Problems] In an elevator door device according to the present invention, an engaging member provided in a car door is formed in a size that causes a gap between the engaging member and an engaging member provided in a landing door. Is installed in the landing door, and the other end is connected to the weight to urge the landing door in the direction of closing the door.This urging force exceeds the inertial force due to the acceleration / deceleration of the door when opening / closing and reversing the door. It is set to a different value. [Operation] In the present invention, the landing door is biased in the door closing direction, and the biasing force is set to a value exceeding the inertial force due to the acceleration / deceleration of the door. Therefore, the engaging body of the car door and the engaging element of the landing door Keeps a close contact at all times, and the car door and the landing door open and close together.

[Embodiment] FIGS. 1 to 4 are views showing an embodiment of the present invention. FIG. 1 is a front view of a car door on the hoistway side, and FIG. 2 is a front view of a hoistway door on the hoistway side. 4 and FIG. 4 are diagrams for explaining the operation of the engaging device part, and the same parts as those of the conventional device are designated by the same reference numerals.

In FIG. 2, (11) is an engaging body composed of a fixing plate (21) composed of a longitudinal member formed in a U-shaped cross section, and the mounting plate (1
It is fixed to the car door (2) by 4).

In Fig. 1, (23) is the hall (24) and (25) is the hall (23).
The hall doors (26) and (27) installed at the entrances and exits of the rollers are fixed to the upper ends of the hall doors (24) and (25), respectively, and rollers (26a) (2
7a) is a sling, (28) is a frame fixed to the upper part of the entrance / exit of the hall (23), and the roller (26) of the sling (26) (27)
Rails (29) for rolling a) (27a) are fixed. (30) is a connecting rope endlessly wound around the pulleys (31) (31) mounted on the frame (28), the lower side of which is connected to the sling (26) and the upper side of which is connected to the sling (27). Has been done. (32) is a pulley supported by the frame (28), (33) is a rope whose one end is connected to the sling (26) and is wrapped around the pulley (32), and (34) is the other end of the rope (33). An urging device composed of a connected weight, (35) is an engaging member composed of a roller protrudingly provided on the hoistway side of the hall door (24).

In the elevator door device configured as described above, when the basket (1) is landed on the hall (23), as shown in FIG. 3, the engaging element (35) and the engaging body (11) are It is located with a gap in the closing direction A. Here, when the car door (2) moves in the door opening direction B, the engagement body (11) comes into contact with the engagement element (35) as shown in FIG. A force in the door closing direction A is constantly applied to the landing door (24) by the biasing device (34). The door closing direction A is positive, the total mass of the landing door (24) is m, the acceleration / deceleration of the landing door (24) is α,
When the urging force is F, the urging force F and the acceleration / deceleration α are set so that F-mα> 0. That is, the urging force F is set to a value exceeding the inertial force due to the acceleration / deceleration α of the hall door (24). Therefore, the engaging body (11) of the car door (2) and the engaging element (3) of the landing door (24).
5) moves in the door-opening direction B in a close contact state. The same is true when the door is opened and when the door is turned upside down. Since the engagement element (11) and the engagement element (35) always move without leaving, the opening / closing operation is performed quietly.

[Effects of the Invention] As described above, in the present invention, the landing door is biased by the weight in the door closing direction, and the biasing force is set to a value exceeding the inertial force due to the acceleration / deceleration of the car door and the landing door. ,
The engagement member of the car door and the engagement member of the landing door are always kept in close contact with each other, and the car door and the landing door are opened and closed in an interlocking manner, so that the opening and closing operation can be performed quietly. Further, since the engaging body is composed of a fixed body and the urging device is composed of a weight,
This has the effects of reducing the number of parts, reducing costs, and facilitating installation and adjustment.

[Brief description of drawings]

1 to 4 are views showing an embodiment of an elevator door device according to the present invention. FIG. 1 is a front view of a car door on the hoistway side, and FIG. 2 is a front view of a hoistway door on the hoistway side. FIG. 4 and FIG. 4 are diagrams for explaining the operation of the engaging device portion, and FIG. 5 is a hoistway side front view of a car door showing a conventional elevator door device. In the figure, (1) is a car, (2) and (3) are car doors, (8) is a door driving device, (11) is an engaging body, (23) is a landing, and (24) is
(25) is a landing door, (34) is a biasing device, and (35) is an engaging element. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A car door, which is installed at a car doorway and is driven by a door drive device, is provided with an engaging body protruding toward the hoistway,
The landing door installed at the entrance / exit of the landing is provided with an engaging member that projects toward the hoistway, and when the car is landed, the engaging body and the engaging member engage with each other to open / close the landing door in conjunction with the car door. In the device, the engagement body is formed to have a size such that a gap is always formed between the engagement body and the engagement element during the engagement period with the engagement element, and one end of the engagement body is coupled to the landing door and the other end is coupled to a weight. An urging device for urging the door in the direction of closing the door by the weight of the weight is provided, and the urging force of the urging device depends on the acceleration and deceleration of the car door and the landing door when opening and closing the car door and the landing door. An elevator door device characterized by being set to a value exceeding those inertial forces.