JPH027872B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an opening/closing engagement device for an elevator door, and more particularly, when opening and closing an elevator door, a car side door and a floor side door are engaged and integrated to open and close the door. This invention relates to an opening/closing engagement device.

As is well known, an elevator door is comprised of a car-side door installed in a car and a floor-side door installed at a floor entrance of a building. However, since it is necessary to install one of the floor-side doors on each floor of the building, a large number of them are installed, and it is very 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 opened and closed by engaging and integrating with the car side door.

Next, for convenience, the opening/closing operation of the elevator door described above will be explained with reference to the single-door single-door elevator shown in FIG. , In the figure, 1 is the elevator car side door, 2
Door shoe installed at the bottom of the basket side door 1, 3
The hanger attached to the top of the basket side door 1, 4 the rail of the hanger 3, 5 the basket frame, 6 the basket frame 5
The motor 7 installed in the motor 7 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, which connects the car frame 5 with its upper end as an axis.
The lower part of the shaft is connected to the chain sprocket 7 by a lever 11 via a pin 10, and the lower end is connected to the car side door 1 by a small link 12.
In the elevator configured as described above, when the motor 6 rotates clockwise in the figure, the chain sprocket 7 is also rotated clockwise as shown by the arrow in the figure, and the movement is caused by the lever 1.
1. The signal is transmitted to the link 9 and 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 performed in reverse by rotating the motor 6 in the reverse direction.

Incidentally, the elevator door opening/closing engagement device needs to be provided with a clamping mechanism as shown in FIG. 7 in order to make the opening/closing operation smooth when opening and closing the elevator door. If this clamping mechanism is not provided, when opening and closing the door, the floor side door engagement roller (not shown) and the fixed engagement plate 30 and movable engagement plate 31
A gap is created between the door and the door, which causes rattling when the door accelerates and decelerates, resulting in unsmooth opening and closing.Particularly when the direction of movement of the door is reversed, a large impact force is generated, which can seriously damage equipment.

In the conventional clamping mechanism, the tip of the small link 12' is shaped like a cam, and a roller 34 pivotally supported by a movable engagement plate 31 supported by a parallel link 32 is caused to contact and roll.
Due to the angle of collapse of the small link 12' when opening and closing the door,
The movable engagement plate 31 is moved in parallel toward the fixed engagement plate 30 to sandwich the floor-side door engagement roller 27 without any gaps.

However, in the above-mentioned conventional elevator door opening/closing engagement device, (1) the movable engagement plate is moved in parallel by the deflection angle of the small link 12', so there are restrictions when setting the link;

(2) When the door drive mechanism is a rope drive or the door drive point is at the top, it is impossible to clamp the door using the conventional method.

There are drawbacks and drawbacks.

The present invention has been made in view of the above points, and is an elevator door opening/closing engagement device that can be separated from the door drive mechanism and maintain a stable clamping function, and has a simple structure and good performance. The purpose is to provide a device.

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. Fig. 1 is an overall schematic diagram, Fig. 2 is an enlarged view of section A in 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 cam 15. FIG. 6 shows a front view of the engagement device when the door is opened and closed.

Reference numeral 20 indicates a fixed engagement plate that faces an engagement roller 27, which will be described later, which is attached to the car side door 1, and its length L in the vertical direction is determined by considering the difference in landing of the elevator car, and the maximum difference in landing occurs. Even if the engagement roller 27
The length is preset long enough to engage the Furthermore, since this fixed engagement plate 20 also serves as the base of the entire engagement device, it is fixed to the hanger 3 or the car side door 1 with bolts 26 or the like. A movable engagement plate 21 rotatably supported via a pair of parallel links 22 is located opposite the fixed engagement plate 20 . Further, as shown in FIG. 4, one of the parallel links 22 has a shaft 23 extending toward the car frame 5 side, and the parallel link 22 is moved from an inclined state to a horizontal state at the extending portion of the shaft. A drive roller 24 is installed to rotate the movable engagement plate 21 within a range of .

Next, the clamping operation of the present engagement device will be explained.
1 to 3 show the elevator door when it is fully closed, and the drive roller 24 attached to the shaft 23 of the engagement device is a cross-sectional core that constitutes a guide track fixed to the car frame 5. Fixed cam 1 formed in the shape of
Located within 5. This fixed cam 15 is located near the closed end of the door, and has first and second horizontal parts and an inclined part connecting them. When the roller 24 is located at the first horizontal portion, the parallel link 2
2 is in an inclined state, and the movable engagement plate 21 is separated from the fixed engagement plate 20. Further, when the drive roller 24 is located in the second horizontal portion, the parallel link 22 is held in a horizontal state, and the movable engagement plate 21 is closest to the fixed engagement plate 20. First, when the door is fully closed, the drive roller 24 is located at point B shown in FIG. 5, which is the first horizontal portion of the fixed cam 15. Further, reference numeral 27 is an engagement roller provided on the floor side door (not shown) as shown in FIG. A gap g exists between each of them and 21. door motor 6
rotates clockwise and the car side door 1 begins to open (to the left in FIG. 1), the roller descends from the first horizontal portion of the fixed cam 15 to the sloped portion as shown in FIG. The engagement roller clamping of the floor side door is completed at point C, which is the horizontal part. That is, as shown in FIG. 6, the parallel link 22 stops at a horizontal position. At this time, the shaft 23 is in a positional relationship in which it contacts the positioning portion a on the fixed engagement plate 20. The above is the door opening operation, but the closing operation is the opposite of the above.

Here, the reason why the parallel link 22 is configured to be horizontal when it is held by the engaging roller 27 is that the acceleration/deceleration force during door opening/closing operation, the inertia force when reversing the door, and the horizontal position when an external force is applied to the floor door. Since the parallel link 22 is held horizontally even when a force in the direction is applied to the movable engagement plate 21, this parallel link 22 does not generate a counterclockwise moment and maintains a stable clamping function. be. In other words, if the parallel link 22 is not arranged horizontally when the engaging roller is clamped, it will be necessary to provide a special holding means such as a spring to add a moment to the counterclockwise moment acting on the parallel link 22, and the component parts As the number of doors increases, the cost increases and reliability decreases, and the movable engagement plate constantly moves during the door opening/closing operation, making it impossible to smoothly open and close the door.

In addition, when the roller 24 attached to the shaft 23 of the movable engagement plate 21 rides on the fixed cam 15 before the closing end of the door, and the parallel link 22 rotates counterclockwise and is no longer horizontal, the floor door is rotated in the opening direction. When a force is applied, force is applied to the movable engagement plate 21 by the engagement roller 27 and rotates the parallel link counterclockwise.As a result, the door end faces of the floor door and the car side door become uneven. In the invention, the fixed cam 15 is made into a U-shape, and the lifting of the roller 24 is prevented by fixing the fixed cam 1.
He is trying to restrain it at the inclined part b of No.5.

The elevator door opening/closing engagement device to which the present invention is applied has the above configuration, namely:
The present invention provides a U-shaped fixed cam 15 on the car frame 5.
By configuring the parallel link 22 horizontally when the floor door engaging roller 27 is clamped, the door opening/closing engagement device that was previously linked to the door drive mechanism is separated, and the door drive system is changed. , which is independent of the driving point.

In the illustrated embodiment, the device of the present invention is applied to a single-door single-swing type elevator, but the present invention is not limited to this, and can be applied to a double-door single-swing type elevator or a double-door single-swing type elevator. There is no need to explain here that it can be applied to other double-door double-door type elevators.

As explained above, according to the present invention, the door engaging device can be installed independently from the door drive mechanism, and the engaging roller can be stably clamped without any gaps.

[Brief explanation of drawings]

Figure 1 is an overall schematic diagram, Figure 2 is an enlarged view of section A in Figure 1, Figure 3 is a plan view of Figure 2, Figure 4 is a left side view of Figure 2, and Figure 5 is a fixed cam. 15 is an enlarged view, FIG. 6 is a front view of the engaging device when the door is opened and closed, and FIG. 7 is a front view showing the opening/closing engaging device for elevator doors that has been generally employed in the past. 15... Fixed cam, 20... Fixed engagement plate, 21... Movable engagement plate, 22... Parallel link, 23... Shaft, 24...
drive roller.

Claims (1)

[Scope of Claims] 1. In an elevator door opening/closing engagement device that opens and closes the elevator door by engaging a floor side door with a car side door of the elevator, the car side door is provided with a car attachment device. A vertical fixed engagement plate having a length sufficient to cover the floor difference and a parallel link arranged above and below are pivotally supported, so that when the parallel link is tilted, the distance between the fixed engagement plate and the fixed engagement plate is maximized, and when the parallel link is horizontal A movable engagement plate that moves in parallel in a direction that minimizes the distance, and a positioning portion that maintains the horizontal position of the parallel link are provided, and the floor side door is provided with a movable engagement plate that moves in parallel in a direction that minimizes the distance, and the floor side door is provided with a movable engagement plate that moves in parallel in a direction that minimizes the distance, and a positioning portion that maintains the horizontal position of the parallel link. An engagement roller positioned in a non-contact state between the movable engagement plate and the parallel link or the movable engagement plate is provided, and a drive roller is pivotally supported on the parallel link or the movable engagement plate, and a drive roller is provided on the fixed part of the car near the closed end of the door. A guide track for regulating the movement of the drive roller is provided, and the guide track includes a first horizontal portion that holds the drive roller in an inclined state with the parallel link when the door is fully closed; an inclined part that is continuous with the horizontal part of the door and guides the driving roller so as to change the parallel link from an inclined position to a horizontal position as the door is opened; An opening/closing engagement device for an elevator door, further comprising a second horizontal portion that enters and exits the guide track. 2. Claim 1, wherein the guide track is attached to the car frame of the car and has a U-shaped cross section, and the drive roller rolls inside the U-shaped cross section. The elevator door opening/closing engagement device described above.