JP4839593B2 - Elevator door equipment - Google Patents

Description

  The present invention relates to an engagement device between an elevator car door and a landing door.

  As the number of buildings rises, it is required to move more passengers between floors in a shorter time. For this purpose, not only speeding up the elevator but also shortening the door opening and closing time is an important issue.

The elevator door is composed of a car door (sometimes referred to as a car door; the same applies hereinafter) and a landing door (also referred to as a hatch door; the same applies hereinafter). The car door and the landing door are engaged by respective engaging devices. It opens and closes. When the door is fully closed, the both engaging devices are arranged at a predetermined interval so as not to contact each other.
The landing door engaging device is engaged with a vane (also referred to as an engaging plate, hereinafter the same) of the car door engaging device after moving a distance for unlocking the landing door locking device.
Therefore, there is time to move only the car door until the car door and the landing door are completely engaged, and it is possible to reduce this time while suppressing vibration and noise when engaging with the landing door. This is important for shortening the opening and closing time.

As a technique related to this, a technique has been proposed in which the moving speed of the vane is increased by increasing the curvature of the curved surface portion of the cam connected to the car door drive link (see, for example, Patent Document 1).

Moreover, the technique which shortens the moving distance of the car door until engagement using a parallel link for a car engaging apparatus is proposed (for example, refer patent document 2).

JP 2000-219465 A (page 5-7, FIG. 1) Japanese Patent Laying-Open No. 2001-253671 (page 4-5, FIG. 1)

  In the former method, since the moving speed of the vanes is increased, the time until the engagement is shortened. However, since only one of the pair of vanes is moved, the car door and the landing door are completely connected. The moving distance of the car door until it is engaged with the is increased. Therefore, there is a drawback that the door opening and closing time cannot be shortened sufficiently.

  In the latter method, the time until the engagement is shortened, but the vane is driven by the cam provided on the car and the guide roller provided on the vane, so that the force for driving the vane directly acts on the door. . For this reason, if the vane is moved quickly, a large force acts abruptly on the door, which is undesirable because it causes vibration and noise. Conventionally, while only the car door is moved until the car door and the landing door are engaged, the speed of the car is kept constant at a low constant speed so as to suppress the generation of vibration and noise during the engagement. It was controlled. Therefore, the door opening / closing time could not be shortened sufficiently.

An object of the present invention is to solve the above problems, and to provide an elevator door device that suppresses the generation of vibration and noise when a car door and a landing door are engaged, and shortens the opening and closing time of the door. It is.

The elevator door device according to the present invention is a car door engaging device having a pair of vanes that form a parallelogram together with a pair of links that are rotatably supported by a car door at a midpoint. A cam interlocking with the link that bends and stretches along with, the cam is provided between the two arc-shaped long sides near and far from the rotation axis of the cam, and the two long sides, When the cam follower is changed while being energized in a direction of decreasing or increasing the distance between the pair of vanes by a cam groove having a groove having a predetermined width and a cam follower provided in the vane, the cam follower is changed to the two circles. It moves while being pressed against either one of the arc-shaped long sides .

According to the present invention, the cam follower provided on the vane is pressed against the cam, so that the vibration of the vane during operation is reduced. Therefore, the sound generated by the vibration is small and the door opening time can be shortened stably.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 shows an elevator central opening door device. The car doors 1a and 1b that open to the left and right are guided to the guide rail 2 by hanger rollers 4a and 4b attached to the door hangers 3a and 3b. The door driving pulley 5 is driven by a motor, and an endless belt 7 is wound around an idler pulley 6 provided at a symmetrical position of the door driving pulley 5. A gripping member 8 a that grips the belt 7 is attached to the door hanger 3 a to grip the lower portion of the belt 7, and a gripping member 8 b that grips the upper portion of the belt 7 is provided to the door hanger 3 b.

Next, the engagement device 10 attached to the car door 1a will be described. Since the engaging device 10 is linked to the direction of operation of the car door 1a, the car door engaging device mounting plate 11, the vanes 12, 13 fixed to the car door 1a, the links 14, 15 connecting them, and the vane 12 , 13 to drive the cam mechanism 20. The cam mechanism 20 includes a cam 21 and a rotary shaft 22, and is rotatably supported by the rotary shaft 22 connected to the door 1a. A cam groove 23 is formed in the cam 21, and the cam 21 is axially supported at the position of the rotary shaft 22 fixed to the car door engaging device mounting plate 11. Further, the cam is rotatably connected to a double link including a link 28 attached to the cam and a link 29 supported by the car door device support frame 9.

FIG. 2 is a view showing an engagement device for a car door and a landing door when the elevator central opening door device shown in FIG. 1 is fully closed.
The landing door engaging device 30 includes two types of rollers disposed between a pair of vanes 12 and 13 having the same diameter, that is, a movable roller 31 and a fixed roller 32, and a latch 33 for opening and closing a landing lock (not shown). Has been. The fixed roller 32 is axially supported by the landing door, and the movable roller 31 applies a driving force to the latch 33. The latch 33 locks the door so that it does not open when the landing door is fully closed.

The vanes 12 and 13 formed of a pair of parallel links that hold the landing door engaging device 30 are configured to have a parallelogram shape together with the pair of parallel links 14 and 15, respectively. It is supported and is axially supported by the link 15 at positions 12b and 13b. The links 14 and 15 are rotatably supported by shafts fixed to the car door engaging device mounting plate 11 at the shape center positions 35 and 36, respectively.

A cam follower 34 guided by a cam groove 23 formed in the cam is in contact with the cam 21 of the cam mechanism 20. The cam follower 34 is a roller that is axially supported at a position 12c on the vane 12. When the cam 21 rotates around the rotary shaft 22 as the door is opened and closed, the cam follower 34 is guided by the shape of the cam groove and moves. , 13 is changed.

Next, the operation will be described with reference to FIGS.
FIG. 2 shows the car and the landing door engaging device when the door is fully closed. Engagement parts between the landing door and the car door, that is, the vanes 12 and 13 attached to the car door and the movable roller roller 31 attached to the landing door so that both door engaging devices do not interfere with each other while the car is running. In the fixed roller 32, before the door opening command, the vane 12 is disposed at a predetermined distance G1 from the movable roller 31, and the vane 13 is disposed at a predetermined distance G2 from the fixed roller 32. When the car door is moved by the distance G1 in the door opening direction by the door opening command, the vane 12 and the movable roller 31 come into contact with each other.

Thereafter, the vane 12 further contacts the fixed roller 32 while moving the movable roller 31. This state is shown in FIG. At this time, the total moving distance of the vane 12 from the door opening command is the distance G3 shown in FIG. While the car door moves from the state in which the vane 12 is in contact with the movable roller 31 to the state in which the vane 12 is in contact with the fixed roller 32, the latch 33 is unlocked in the unlocking direction (counterclockwise in FIG. 3). , The landing door is unlocked, and the landing door is ready to open. From the state of FIG. 3, the car door is opened together with the landing door.

When the door is further opened, the vanes 12 and 13 are displaced so as to approach each other, and the two rollers in FIG. 3, that is, the movable roller 31, and the distance G4 between the fixed roller 32 and the vane 13 are also eliminated, as shown in FIG. Fully engaged.

FIG. 5 shows the time characteristics of the speed of the vane 12 (solid line), the speed of the landing door (dashed line), and the speed of the car door (dashed line), which is the car door engaging device. In the figure, starts to move the car door in the door open direction than the time 0, after the vane 12 interlocked with the car door is driven by the cam mechanism 20, the landing door engaging device 30 engages at time T ₁ (landing Grip the door engagement device). Then, the time T ₁ and later, in a manner corresponding to the change in velocity of the car door (constant speed and deceleration from acceleration), landing door starts door open, landing doors with door open completed in time T _max. At this time, the landing door is stopped until the car door moves by a distance G3 shown in FIG. 2 when the door is opened. Incidentally, the convenience of the display, in the interval up to the time T ₁ later time from the time when the speed of the three parties is larger than V1 T _max, small but was displayed as a difference in the speed of the three-way However, the speed values of the three parties actually match with no difference in the above section.

Generally, if the car door speed is increased during this period, the impact when the vane 12 contacts the fixed roller 32 increases, so the speed of the car door is normally controlled to move at a low constant speed.

As shown in FIG. 5, the present invention accelerates the vane 12 immediately after the door is opened to increase its speed, and then decelerates the vane in a time zone before the vane 12 contacts the fixed roller 32. Thus, the speed when the vane contacts the fixed roller is reduced, and the impact force at the time of contact is reduced. Since the vane speed before the engagement can be increased by doing as described above, the car door can be moved in a shorter time than before when the distance until the engagement is the same as the conventional, so the door opening time Can be shortened.
In this embodiment, the vane 12 is driven by a link and a cam. However, a rotary motor is installed coaxially with the rotary shaft 22, and the rotation of the cam 21 is synchronized with the movement start time of the car door. The moving speed of the car 12 may be increased by accelerating the moving speed of the car door, and the speed may be increased, and the motor may be driven to decelerate immediately before the vane 12 contacts the fixed roller 32.

Embodiment 2. FIG.
Next, a second embodiment will be described with reference to FIGS. As described above, the pair of vanes 12 and 13 constituting the parallel link are driven based on the shape of the groove 23 of the cam 21. The cam 21 is supported by the car door 1a via the mounting plate 11 with a rotating shaft 22, and a link having one end rotatably connected to a link 29 supported by the car door device support frame 9 at a joint. 28 is supported. When the door driving pulley 5 rotates, the car doors 1a and 1b obtain driving force by the belt 7 and start moving in the door opening direction. At this time, since the distance between the rotating shaft 22 of the cam 21 and the support point of the car door device support frame 9 of the link 29 is shortened, the joint point of the link 28 and the link 29 starts to rise, and the cam 21 matches the rise. Rotates around the rotation axis 22. Then, the cam follower 34 joined to the vane 12 is moved along the cam groove 23 in accordance with the rotation of the cam 21 and the vane 12 is driven.

If the curvature of the curved shape of the cam groove 23 is increased, the movement amount of the vanes 12 and 13 can be increased even if the rotation angle of the cam 21 is small. Further, by changing the arrangement or length of the links 28 and 29, it is possible to design the cam rotation angle to be larger with respect to the distance that the car door moves in the vicinity of the fully closed door.

Therefore, by changing the shape of the cam groove 23 or the length of the links 28 and 29, when the door is opened, only the car door is smaller than the moving distance of the car door required for the conventional engagement, and the vane 12 The movable roller 31 engaged with the landing door is displaced, the landing door is unlocked, and the vane 12 can reach the fixed roller 32 engaged with the landing door. At this time, immediately after the start of the door opening of the car door, the shape of the cam groove and the vane 12 are moved so that the vane 12 moves quickly in the door opening direction, and immediately before the vane 12 moves at a low speed. The links 28 and 29 can be designed.

Since the vanes 12 and 13 have a parallel link configuration, the vane 13 is displaced by the same distance as the vane 12. Therefore, it is possible not to generate the distance G4 shown in FIG. That is, the vane 12 can be moved quickly, and the engagement can be completed at the same time as the vane 12 contacts the fixed roller 32 engaged with the landing door. Thereby, when the landing door is opened, it is possible to shorten the time until the car door and the landing door are completely engaged.

Further, since the vanes 12 and 13 are driven by the cam follower 34 in the vicinity of the center of gravity of the vanes 12 and 13, the vane vibration and noise due to the driving force are hardly generated. Therefore, vibration and noise at the time of engagement can be suppressed low.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIGS. When the cam follower 34 moves along the cam groove 23, as shown in FIG. 6, a gap is formed between the cam follower and the cam groove so as to reduce the portion that moves in contact with the cam groove surface as much as possible. Has been. For this reason, if disturbance is applied to the vanes 12 and 13 before the landing door and the car door are engaged, the cam follower is likely to vibrate in the cam groove.

In order to eliminate this, by energizing the cam follower 34 in the direction of increasing the distance from the vane 12 or the direction of increasing the distance from the vane 13, one side of the cam groove 23, that is, the rotating shaft 22 is moved. The cam follower 34 is stably moved along either the arcuate long side closer to the reference (23a side in FIG. 6) or the far arcuate long side (23b side in FIG. 6). be able to.

At this time, the biasing means includes a compression spring and a weight. When a compression spring is used as the means for biasing, the compression spring is installed between the vanes 12 and 13 so that the gap between the vanes 12 and 13 is biased. It is press-contacted with the cam groove 23a shown in FIG. 6, and it can follow along stably, without vibrating.

Further, when a weight is used as the biasing means, for example, by attaching a weight to the vane 12, the parallel links 14 and 15 are moved to the side of the vane to which the weight is attached due to the influence of gravity, that is, the parallel link. A rotating force is generated in the direction of clockwise rotation of 14 and 15, and as a result, the distance between the vanes 12 and 13 is increased. As a result, the cam follower 34 attached to the vane 12 is always pressed against the cam groove 23b and does not vibrate.

The elevator door apparatus whole figure of this invention. The elevator door engagement apparatus of the present invention (when fully closed). The elevator door engagement apparatus of the present invention (in the middle of engagement). The elevator door engagement apparatus of this invention (at the time of completion of engagement). The figure which shows the speed characteristic of the elevator door of this invention. The operation explanatory view of the cam of the present invention.

Explanation of symbols

1a, 1b car door, 2 guide rail, 3a, 3b door hanger, 4a, 4b hanger roller, 5 door drive pulley, 6 idler pulley, 7 belt, 8a, 8b gripping member, 9 car door device support frame, 10 engagement device, 11 Car door engaging device mounting plate, 12, 13 vane, 14, 15 parallel link, 20 cam mechanism, 21 cam, 22 rotating shaft, 23 cam groove, 28, 29 link, 30 landing door engaging device, 31 movable roller , 32 Fixed roller, 33 Latch, 34 Cam follower.

Claims (1)

In a car door engaging device with a pair of vanes that form a parallelogram together with a pair of links that are supported by the car door so that the midpoint can rotate, interlocked with the link that bends and stretches as the car door opens and closes Cam, two arc-shaped long sides near and far from the reference axis of rotation of the cam, and a groove provided between the two long sides and having a predetermined width and a cam groove having, when changing while urged in the direction of direction or greatly reduce the distance between the pair of vanes by a cam follower provided on the vane, said cam follower is either one of the two arc-shaped long sides An elevator door device that moves while being pressed .

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