ES2329913T3 - DEVICE FOR DRIVING AND INTERLOCKING OF ELEVATOR DOORS. - Google Patents

Abstract

Drive and interlocking device for elevator doors with drag skates (14, 15) that act in conjunction with the drive roller rollers of the elevator box (109, 110), a drive system (104a, 104b being provided) ) arranged in an elevator door of a cabin, which in relation to the drag rollers of the elevator box door (109, 110) commands the distance between the drag skates (14, 15) and comprises a lever of pre-tensioned drive (1) connected to a drive of an elevator car door (105, 106) against a position induced by the drag skates (14, 15) in support against the drive rollers of the box doors elevator (109, 110), a bolt (20) being pre-tensioned by a spring (7) and acting together with a firm closing anchor (24) being provided, allowing interlocking of the cabin doors (104a, 104b) , characterized in that the spring (7) and the bolt (20) e They are both operative and pre-tensioned.

Description

Drive and interlock device elevator doors

Technical environment

The present invention is about a device of actuation and interlocking of elevator doors according to the generic term of claim 1.

Usually, elevator doors are they act in such a way that a lift is provided in the elevator car door drive, which executes the opening movement and Cabin door closure. The elevator box doors, found at each elevator stop point, do not count Usually, with its own door drive, but they are dragged from the cabin door using devices drag In addition, in this case the drag devices have additionally the function of executing the unlocking of the elevator box doors.

Commonly, in the elevator box doors box door drive rollers are arranged, which in horizontal or vertical direction have a certain distance. The dragging device that is attached to the door of the elevator car, has drag skates that are oriented perpendicularly, its modifiable being Distance between one and the other. The unlocking of the doors of elevator box, is done in this case because the skates of drag exert a force on the drive rollers of the elevator box door. Basically this force can gather or separate the drive roller from the lift box door by pressure. In practice, these systems are called Closing couplers or opening couplers.

As soon as the unlocking of the elevator box doors, you can execute the movement of opening of the elevator door, transferring the force from the cabin doors through the skates and drag rollers of the lift box door, towards the elevator box doors, so that both the doors of cabin as the elevator box doors open simultaneously. In this case, the elevator box doors are coupled to each other through a drag device, For example, a hoist. The closing movement is made of opposite mode.

The cabin doors themselves are not interlocked frequently, that is, they are retained in a closed state, only through the force of the door drive. Without However, under certain conditions it is necessary or is legally prescribed, provide for an interlocking of the doors of cabin, effectively preventing an opening of the (s) door (s) outside the so-called retention zones, which are the expected retention points of the elevator car. In In this case, the interlocking must be shaped so that even in case of power failure remain in operation the interlocking function. On the other hand however, it is it is necessary to release the interlocking in the retention areas, either by normal and intentional opening of the cabin door, or in case of emergencies, for example, in case of power failure after manual descent of the cabin. Through patents EP 0426057 A, EP 709334 A or EP 164581 A have disclosed devices interlocking, in which the interlocking is activated through a lever, which are joined by a probe roller, being the touch roller in the retention areas diverted through ramps from their resting position. In the rest position they are nailed cabin doors. In this solution it is unfavorable that the adjustment effort for a plurality of ramps is relatively large

A solution is known from EP 744373A according to which the movement of the door latch is transferred of elevator box, to the lock of the cabin door. The Corresponding mechanics presents various individual parts.

In order to avoid these disadvantages they have developed solutions that couple the interlocking device for cabin doors with the movement of the drag skates, so that no additional ramps are needed on the floors of the building. These solutions are described by way of example, in the US 6173815 B or EP 332841 A. In this case, the devices they are mounted in such a way that the cabin doors are always closed, if the door drive forces the doors to The closed position. However, the interlocking remains active. even when the door drive is disabled outside of a floor of the building, for example, due to a cut of current or to a fault, it is triggered unintentionally and with it the skates are moved to a corresponding position to the interlocking of the elevator box doors. Only in the area of the retention zone on the respective floors of the building can result in an unlocking of the cabin door, driving the skates, but running aground against the drag rollers of the elevator box door and not being able to perform your complete movement theoretically possible. According to known solutions, this functionality is executed by a series of levers, coupled on the one hand to the actuation of the door and on the other hand to a drag skate. The solutions known are mechanically complex and therefore expensive of manufacturing and maintaining.

In the known solutions are provided separate springs for the operating lever and the bolt for the interlocking of the door (s). This merits corresponding a volume of design and manufacturing.

Through WO 2003089356 A - it has been released a similar design. In this case the unlocking the cabin door with the help of a rope that is tensioned when the box skates drag elevator run aground. In this case, springs are also provided. separated for the operating lever and the lock for the interlocking of the door (s).

EP 1266860 A is known as a patent optimization EP 332841 A. Also in this case it is provided a stylus bar on one of the drag skates. Alone if the drag skate presses against a drag roller the elevator box door, the stylus bar is pressed against the drag skate, thus unlocking the cabin door. For this, it is necessary according to EP 332841 A, transfer the movement of the stylus bar to a drive roller interlocking the cabin door by means of a control curve. According to EP 1266860 A, this is done by means of a lever. In this case two springs are also necessary, one for the drag skates and another for the second bolt.

Discovery of the invention Technical problem

The objective of the invention is to avoid mentioned disadvantages and propose a device of the type before mentioned, characterized by a simple execution, according to the which can reduce the number of springs.

Technical solution

According to the invention, this is achieved in a device of the type mentioned above, using the attributes characteristics of claim 1.

The proposed measures ensure that a spring guarantees both for the pre-tension of the actuation lever as well as for the bolt and with it of the interlocking of the door (s).

Through the attributes of claim 2 there is the advantage of a very simple solution in terms of design. In this case it can be guaranteed fairly simple, a pre-tension of the bolt and the drive lever

By means of the attributes of claim 3, they can pre-tension simultaneously against a position determined through a spring, three pieces with pivot housing. This produces a very design simple, by which you can achieve sufficiency with a minimum pieces

Especially economical is the configuration according to claim 4. As will be clearly seen in the description  of the figures, it can be achieved through it, that the doors they are unlocked only when the cabin is in an area of retention.

Brief description of the drawings

Based on the drawings, it is explained in detail the invention. In this case it shows the:

Figure 1, an overview of a device according to the invention, in the position in which the interlocking is unlocked in the floor area of the building to open the door of the cabin;

figure 2, the device of figure 1 in enlarged scale, in a position where the drive of the door keeps the cabin door closed;

figure 3, a representation according to figure 2, in a position of the device, the actuation of the door without power (power failure) between floors of the building, the cabin door locked; Y

figure 4, a representation according to figure 2, in a position, in which the interlocking is unlocked in the Building floor area to open the cabin door.

The best way to take advantage of the invention

In Figure 1, the device according to the invention, which has a drive system 100, is represented in Its mounting position. The drive system 100 is basically arranged on a carrier plate 200 that is coupled to a cabin door 104a.

Through an entrance opening of a elevator car not shown in detail, a door support 101 in the form of a bearing element. At door bracket 101 are attached guide rails 102 on which rollers 103 roll on which cabin doors 104a are hung, 104b. The drive of the cabin doors 104a, 104b is executes through a drive 105, for example, a electric motor that is attached to the door bracket 101 and that drives a drive belt 106. Drive belt 106 is coupled to a drive system 100 (see figure 1) by means of a drive lever 1 (see figure 2-4). Since the drive system 100 is coupled directly to the first cabin door 104a, the first cabin door 104a through a drive belt 106. The first cabin door 104a is further coupled to a rope circulating 107, arranged essentially horizontally and driven by guide rollers (108). The second cabin door 104b is also coupled to a circulating rope 107, but at another branch, so that the opening and closing movement of the cabin doors 104a, 104b runs simultaneously and in Wrong Way. In addition, in figure 1, apart from skates drive 14, 15 of drive system 100, are represented lift box door drag rollers 109, 110 that are coupled to a box door 111 outlined in this case by dashed lines. This is also conveniently formed into two segments, being joined between yes both segments of elevator box door 111, through of a coupling system, for example, a circulating rope, similar to the rope 107, so that these two segments also can be moved simultaneously and in the opposite direction.

First, the basic assembly must be explained and the basic function. A situation is represented in figure 2 with cabin doors 104a, 104b closed (visible only in the figure 1) and with elevator box doors 111 closed (visible also only in figure 1). The skates drag along with two pivoting levers 11, 13 make up a parallelogram articulate. Moving the pivoting levers 11, 13 is modified the distance of the drag skates 14, 15. According to figure 2, the drag skates 14, 15 of the drive system 100 have been approximated to each other maximally and consequently away of the drag rollers of the elevator box door 109, 110, so that the cabin can be moved without their influence drive box roller rollers 109, 110.

The opening movement of the doors of cabin 104a, 104b (see figure 1) and box doors elevator 111 is initiated by activating the drive of the door 105 and drive belt 106 in counter-direction of arrow 4 (see figure 2). Through movement of the drive belt 106 is first dragged the drive lever to drive system 100 and shifted to the left with its point of articulation 2 located above its pivoting axis 3. This results in that a drive bar 10 articulated in the lever of drive 1 and that is articulated with its lower end in the pivot lever 11, is pulled up and that the skates of drag 14, 15 are separated from each other, pivoting the lever pivot 11 and 13. (Rigorously, the drive bar 10 is articulated on a cam 18 which in turn is articulated in drive lever 1. This is still done below).

The drag skates 14, 15 exert a pressure force on the drive roller rollers of elevator box 109, 110, thereby releasing an interlock not shown, of elevator box doors 111. As for drive lever 1 of drive system 100 beech reached its top, which is shaped through the end of a collision drill 6, in which a roller 5 engages, the system of full drive 100 is pulled to the left by the drive belt 106 (see figure 1), thus starting the opening movement of the first cabin door 104a. Good, now the position of figure 1 and figure 4 has been reached. same time the second cabin door 104b moves in the opposite direction. Through the drive rollers of the elevator box door 109, 110 crawl and open the elevator box doors 111, which - as already mentioned - they are also coupled to each other by a rope circulating.

So far, the basic principle of this mechanism. Below is detailed how this is mounted and how works:

The drive lever 1 for the drive system 100 according to the invention is coupled at the articulated point 2 (see Figure 2-4) to the drive belt 106. The drive lever 1 is pivotally housed around the pivot axis. 3 fixedly attached to the cabin door 104a. In the position (the cabin door is held in the closed position) shown in Figure 2, the drive belt 106 pulls the drive lever 1 in the direction of the arrow 4, so that the roller 5 on the drive lever 1 is present in a stop (upper end of the collision hole 6) fixedly connected to the cabin door 104a. Through the driving force of the drive belt 106, the cabin door 104a is held simultaneously in the closed position. A pressure spring 7 sits on a guide bar 8 and exerts a pressure force on the actuating lever 1 and on a pressure plate, thereby tensioning the actuating lever 1 through an articulated point 9 of the spring 7 in one direction, which corresponds to a pivoting movement against the direction of the handles of a
watch.

On the drive lever 1, on a shaft 19 the cam 18 is fixed with rotation. The cam 18 is coupled to the drive bar 10, which - as already mentioned - on the other hand, is attached to the first lever Pivot 11. This coupling is made because a short bearing bolt 33 is inserted into the drive bar (alternatively a short Allen screw may also be screwed). This bearing bolt 33 passes through cam 18 through a corresponding bore, its head movable in a colossal bore 34 in the lever
drive 1.

Thus, on cam 18 it is retained with pivoting the drive lever 10, which couples the pivoting movement of the operating lever 1, at pivoting movement of the first pivoting lever 11. The first pivot lever 11 is pivotally housed around a axis 12 and conforms with the second shaped in the same way, a articulated parallelogram, around the pivoting axis 16 of the lever pivotable 13 pivotable and to both drag skates 14, 15, the which are coupled at articulated point 28, to the levers pivoting 11, 13. The pivoting levers 11, 13 are manufactured mostly metal, and can also be plastic.

In addition, it should be noted that the bar drive 10 is shaped so that that drive unit (articulated parallelogram) can be set to choice in the direction horizontal as vertical: several possibilities of coupling with the pivoting lever 11 at a distance from each other.

It is visible that in the position represented in the Figure 2, the drag skates 14, 15 show the distance minimum d0, so that the box door drive rollers Elevator 109, 110 are not contacted.

Another latch is planned 17. The latch 17 is pivotally attached around an axis 30 on the plate bearing 200. In this case, the closed and locked ones are cabin doors 14a, 14b (represented only in figure 1) the latch 17 runs aground with its drive roller 32 on a ramp 31 which is arranged in the cabin. The latch 17 does not influence the drive lever 1 in this position. Ramp 31 is arranged in the cabin, so that the latch always runs aground on ramp 31 when closing cabin door 104a (only represented in figure 1).

Around an axis 21 it is pivotally housed a bolt 20 that is pre-tensioned by the spring of pressure 7 through the pressure plate 22 in the direction of the watch handles At the front end of the bolt is a locking bolt 23, which in the position shown in figure 2 and 3, gear into a firm closing anchor 24, interlocking mechanically in this way the cabin door 104a (shown only in figure 1).

The bolt (20) continues to act on a switching contact 25, which is shaped to register and check the interlock of cabin doors 104a, 104b (only represented in figure 1).

A situation is represented in figure 3, in which the door drive is without power (cut of current) or that for a failure tries to open the cabin doors 104a, 104b (depicted only in Figure 1) outside an area of expected retention. In this case, the drive lever 1 is  maximally displaced in the opposite direction to the direction of The clock handles. In the event that the drive is without current (current drop), this position is reached by force of the pressure spring 7, which prestresses the drive lever 1 and bolt 20 on the pressure plate  22 in the position shown. The pivoting levers 11, 13 are you also move at maximum in the direction of the direction of the watch handles, causing drag skates 14, 15 adopt a position of maximum distance, in which their distance is d1. The free end of the bearing bolt should be considered  33, both in figure 2 and in figure 3, is found in the top end of the coliso drill. Thus, cam 18 performs only the pivoting movement of the operating lever 1 (along with that), but no relative movement against that. Since the cam surface 35 is a circular arc, in whose central point is the pivoting axis 3 of the lever drive 1, no essential pressure force is obtained on bolt 20 at point 27 by movement of the position represented in figure 2 to the position represented in Figure 3, so that the bolt 20 remains in the position of interlocking in which this is pre-tensioned by the spring 7. This means that even in the event of a power failure or in case of an unintended attempt to open, the Cab doors 104a, 104b remain locked.

The position of the device that is represented in figure 4, corresponds to an intentional opening  of cabin doors 104a, 104b. In this case, the lever of drive 1 is shifted to the maximum against the direction of the watch handles using the 106 drive belt, as in the figure 3.

When moving drive lever 1 in counterclockwise, it slides going through the latch 17 raised. When the door of cabin 104a in other sequences starts moving towards the left due to the actuation of the door 105, making this so that latch 17 goes down from ramp 31, the position shown in figure 4: drive lever 1 is fixed in the position shifted against the direction of the clock handles through latch 17.

In this position, latch 17 locks the drive lever 1 at point 26, thus defining the position of the lever 1, that is, it remains displaced to the most against the clockwise, when the Drive belt 106 closes the doors. Only at the end of the movement closing, when latch 17 runs aground on the ramp 31, the drive lever 1 can move again in clockwise direction. This ensures that even during the closing movement the drag skates 14, 15 are tight separated from each other.

Contrary to figure 3, the movement of the drag skates 14, 15 are limited outwards by means of lift box door rollers 109, 110, of so that a distance d2 is adjusted between the skates 14, 15, for what is valid:

D0 <d2 <d1

During the movement of the position in the figure 2, to the position according to figure 4, the drive rollers 109, 110 prevent the skates 14, 15 from carrying out another movement. Consequently, they exert a reaction force on the drag skates 14, 15, which counteract the force of drive lever 1, which tries to press apart the skates drag each other. Thus, the lever of drive 10 experiences a tensile force. Through this pulling force the bearing bolt 33 is moved towards down from the drive bar 10 to the collision drill 34, thereby moving cam 18 against the direction of the watch handles By this force pivots cam 18 in a defined angle with respect to the operating lever 1 around the axis 19 and also activates bolt 20 at point 27 (against of the direction of the force of the spring 7), which in this way is pivoted against the direction of the handles of clock around axis 21. Through this movement the bolt of closure 23 is ejected from closure anchor 24 and the door of cabin 104a released. In addition, the switching contact 25 is open and with it the interlocking signal is interrupted. The shape special cam 18 makes it possible to allow that movement of unlocking, only if the distance between the skates of drag 14, 15 is adjusted according to the distance between the drive box roller rollers 109, 110.

When closing the cabin doors 104a, 104b, the cabin door 104a and with it support plate 200, are displaced  to the right, preventing by locking latch 17, a pivoting movement of the operating lever 1 in Direction of clockwise direction. In this way, the Lock 20 is held in its unlocked position. Only when the Cab doors 104a, 104b are closed, latch 17  on ramp 31, thus pivoting in other sequences, the door drive 105 (shown only in figure 1), the operating lever 1 clockwise, a through which cam 18 is pivoted to the position shown in figure 2 and the spring 7 for its part, pivots the bolt 20 to its locked position, the cabin doors 104a being interlocked, 104b.

It should be emphasized that the position of Figure 4,  both in the intended mode of operation can be achieved from the position of figure 2 in the retention zone, activating the door drive, as well as in an emergency, from the position of figure 3, for example, if the cabin is mechanically diverted to the retention zone in the event of a cut of current. In the latter case, the skates 14, 15 they will be tightened by the drag rollers of the box door elevator 109, 110. This causes a downward movement of the drive lever 10, which leads to a pivot of the cam 18 counterclockwise and with it, to an unlocking of the cabin doors 104a, 104b, in order to release to people who are possibly locked in the cabin.

The present invention enables with an amount minimum of individual building components, one execution safe and according to the instructions, of a door interlocking of corresponding cabin for elevators.

Claims (4)

1. Drive and interlocking device for elevator doors with drag skates (14, 15) that act together with the drive rollers of the elevator box door (109, 110), with an actuation system (104a) , 104b) arranged in an elevator door of a cabin, which in relation to the drag rollers of the elevator box door (109, 110) commands the distance between the drag skates (14, 15) and comprises a pre-tensioned drive lever (1) connected to a drive of an elevator car door (105, 106) against a position induced by the drag skates (14, 15) in support against the drive roller rollers of elevator box (109, 110), a bolt (20) being pre-tensioned by a spring (7) and acting together with a firm closing anchor (24) being provided, allowing interlocking of the cabin doors (104a, 104b), characterized in that the spring (7) and the bolt (20 ) the two are in operative connection and pre-tensioned. 2. Device according to claim 1, characterized in that the spring (7) is formed as a pressure spring and that it is supported on the operating lever (1) and that it engages in the bolt (20). Device according to claim 2, characterized in that the spring (7) is supported at one end through a pressure plate (22) that engages in a bolt (20) and in a latch (17), the latch acting together (17) with the actuator lever (1) and being tensioned against a position in which the latch (17) serves as a stop for the actuator lever (1). Device according to claim 3, characterized in that a cam (18) is articulated on the drive lever (1) on an axis (19), whose cam surface (35) corresponds more or less to a circular arc, whose point center corresponds to the pivoting axis (3) of the actuation lever (18), because the cam (18) drives the bolt (20) with the cam surface (35) and because in the cam (18) a bar is articulated drive (10), which on the other hand is attached to the drag skates (14, 15).