CN110621607B

CN110621607B - Device for actuating an elevator door

Info

Publication number: CN110621607B
Application number: CN201880028920.0A
Authority: CN
Inventors: 尤古·拉吉
Original assignee: Fge Electronic Products Co ltd
Current assignee: Fge Electronic Products Co ltd
Priority date: 2017-05-10
Filing date: 2018-05-08
Publication date: 2022-04-19
Anticipated expiration: 2038-05-08
Also published as: IT201700050340A1; EP3634899B1; EP3634899C0; CN110621607A; WO2018206530A1; EP3634899A1

Abstract

A device for actuating an elevator door, comprising: -moving means (2) for moving a car door (3) supported by a car (4) of the elevator; and at least one coupling device (5) for coupling between the car door (3) and the landing door (6), which coupling device is adapted to conveying a command from an inactive condition to an active condition, wherein the coupling device is adapted to make the car door (3) and the landing door (6) corresponding to the landing at which the car (4) stops integral with each other, and vice versa, the moving means (2) comprising at least one first flexible element (7) for transmission, which is functionally connected to the car door (3) and extends between first guide wheels (8a, 8b), at least one of which is driven by a motor, wherein the coupling device (5) can be actuated between the inactive condition and the active condition by means of a second flexible element (9) of transmission.

Description

Device for actuating an elevator door

Technical Field

The invention relates to a device for actuating an elevator door.

Background

As is known, elevators are provided with a car door which allows access to a car moving along an elevator shaft (elevator hoistway) and is automatically operated by actuating means mounted on the car itself to open or close the car door and, together with a landing door at each floor, allow access to the elevator shaft.

A car door actuation device generally comprises a carriage integral with the car door and actuatable so as to slide along a linear guide by means of a flexible element constituted by a belt, which extends between a pair of wheels having mutually parallel axes, one of which is made to rotate idle and the other of which is motor-actuated.

In particular, when the car stops at a floor, the car doors are coupled to the respective landing doors such that an opening actuation of the car doors causes the opening of the landing doors to be also dragged so that the car is accessible to the user.

For safety reasons, a removable locking device is associated with each of the landing doors and allows to lock the landing doors in a closed condition, preventing the landing doors from being opened if the car is not present at the respective floor, and to deactivate the removable locking device after the car door is coupled with the respective landing door.

Usually, the coupling between the car door and the landing door is provided by means of an expansion coupling (also called clamp or slide) associated with the car door and by means of an abutment element associated with the landing door, which is designed to be engaged by the expansion coupling, so as to make the car door integral with the landing door in a position in which the car has stopped.

More specifically, the expansion coupling essentially comprises a pair of bars substantially parallel and facing each other and oriented along the direction of movement of the car, while the abutment element comprises an idle roller kinematically connected to the removable locking means of the respective landing door.

The rods of the expansion device are movable on command between an inactive condition, in which they are mutually closed so as not to engage or engage only by sliding abutment elements provided on the landing doors, and an active condition, in which they are suitable to engage abutment elements so as to make the car doors and the respective landing doors integral with each other.

Furthermore, in the transition from the inactive position to the active position, by means of a suitable kinematic connection, the lever of the expansion device produces a movement of the abutment element, which also results in the deactivation of the removable locking means of the landing door, which have been made integral with the car door by the expansion device.

Currently, if the actuation is provided by means of the same belt that actuates the car door, the actuation of the expansion device takes place in a so-called "passive" manner, or in an active manner, in which case the actuation is provided by means of an actuator that is distinct from and separate from the actuator that actuates the belt that moves the car door.

The main advantage of the active type of actuation of the expansion device is the independence of movement between the expansion device and the car door, which makes it possible to activate the expansion device and thus engage the landing door, so that it is quickly integrated with the car door without causing unwanted movements of the car door.

The main drawback of this solution (with respect to the passive one) is the increased cost due to the additional servomotor, which is used only for actuating the expansion device and not for moving the car door, and the need to provide a movable cable for supplying power to the servomotor, which is integral with the expansion device and moves with the car door.

Disclosure of Invention

It is an object of the present invention to provide a device for actuating an elevator door which improves on one or more of the above mentioned aspects of the background art.

Within this aim, an object of the invention is to provide a device for actuating an elevator door which is able to provide a quick and safe movement of the door of the elevator.

Another object of the invention is to provide a device for actuating an elevator door which is structurally very simple and which further can be provided by elements and materials which are generally commercially available.

A further object of the present invention is to provide a device for actuating an elevator door which allows to provide a coupling directly at the car door and at the landing door by means of a coupling device which can be actuated by using a solution of the passive type, thus avoiding the drawbacks observed by this solution in the background art, or alternatively which can be actuated by adopting a solution of the active type.

It is a still further object of the present invention to overcome the disadvantages of the background art in a manner that replaces any existing solution.

A further object of the present invention is to provide a device for actuating an elevator door which, in addition to having a high degree of reliability, is relatively easy to provide and cost-competitive.

This aim and these and other objects, which will become better apparent hereinafter, are achieved by a device for actuating an elevator door according to the invention, optionally provided with one or more of the features described in the detailed description.

Drawings

Further characteristics and advantages of the invention will become better apparent from the description of some preferred but not exclusive embodiments of the device for actuating an elevator door according to the invention, illustrated by way of non-limiting example in the accompanying drawings, wherein:

fig. 1 is a perspective view, partly in section, of a first embodiment of the device according to the invention, the door being in a closed condition and the coupling device being in an inactive condition;

FIG. 2 is a view similar to FIG. 1, however with the coupling device in an activated state;

FIG. 3 is a view of a first embodiment of the coupling device with the door in an open condition;

fig. 4 and 5 are perspective views of the movable kinematic transmission means provided in the first embodiment in two different states of its operation;

fig. 6 is a perspective view, partly broken away, of a second embodiment of the device according to the invention, in which the door is in the closed state and the coupling device is in the inactive state;

FIG. 7 is a view similar to FIG. 6, however with the coupling device moved into the activated state;

FIG. 8 is a view of a second embodiment of the apparatus according to the present invention with the door in an open condition;

FIG. 9 is a top plan view of a second embodiment of the apparatus according to the present invention;

Detailed Description

With reference to the accompanying drawings, a device for actuating an elevator door according to the present invention, generally designated by the reference numeral 1, comprises moving means 2 to move a car door 3, which may comprise one or more door leaves.

The moving means 2 are supported by the car 4 of the elevator, conveniently at a beam 4a arranged above an opening for access to the car 4, the car 4 being designed to be closed by the car door 3.

Furthermore, there is at least one coupling device 5 which allows coupling the car door 3 to a landing door 6 closing the opening for access to the elevator shaft at different floors of the building, and at each floor the landing door can also be provided with one or more door leaves.

In particular, the coupling device 5 is able to transfer the command from an inactive condition (shown, for example, in fig. 1 and 6) to an active condition (shown, for example, in fig. 2 and 7), in which it is suitable to make the car doors 3 integral with the landing doors 6 relative to the floor at which the car 4 is parked, and vice versa.

As shown in the figures, the movement means 2 comprise at least one first flexible transmission element 7, comprising for example a transmission belt, or alternatively a chain or other equivalent element.

The first flexible element 7 is functionally connected to the car door 3 and is preferably arranged along a closed path, open between

first guide wheels

8a, 8b, wherein at least one of the first guide wheels (in particular, in the example shown, the one designated by the reference numeral 8 a) is made to actuate.

The first flexible element 7 is connected to the car door 3, for example, by means of a carriage 7a mounted so as to be slidable on linear guides, formed on the beam 4a of the car 4 and not shown for the sake of simplicity, and fixed at one of its ends to the car door 3 and at its opposite end to a clamp or bracket 7b, and therefore to the first flexible element 7.

The actuation of the coupling device 5 between its inactive condition and its active condition is performed by means of a second flexible transmission element 9, different from the first flexible element 7.

In particular, the second flexible element 9 can also be conveniently provided with a drive belt or with a chain or the like, and advantageously extends along a closed path.

More specifically, advantageously, the second flexible elements 9 extend between

second guide wheels

10a, 10b, conveniently arranged so that their own axes are parallel (or more preferably, coaxial) to the axes of the

first guide wheels

8a, 8 b.

According to a possible constructive solution shown in fig. 1 to 5, there is a removable device for the kinematic transmission 11 having the function of making integral in rotation at least one of the

first guide wheels

8a, 8b and at least one of the

second guide wheels

10a, 10b with each other.

These removable kinematic transmission means 11 are interposed, for example, between a first guide wheel 8a and a second guide wheel (indicated by the reference numeral 10a in the figures) coaxial to the first guide wheel 8 a.

Advantageously, the removable kinematic transmission means 11 are suitable to change from an active condition (shown in fig. 5), in which they provide a kinematic connection between the first guide wheel 8a and the second guide wheel 10a so as to make them integral with each other, to an inactive condition (shown in fig. 4), in which the first guide wheel 8a and the second guide wheel 10a are kinematically separated from each other so that the rotation of one is not transmitted to the other, and vice versa.

Specifically, referring again to the embodiment shown in fig. 1 to 5, the second guide wheel 10a is rotationally integrally keyed about a drive shaft 12 which is rotationally moved by a motion source 12a, and on which a first guide wheel 8a is mounted so that it can rotate freely.

Conveniently, the removable kinematic transmission means 11 can be provided by means of electromagnetically activated connection means able to rotate on command the first guide wheel 8a integrally with the second guide wheel 10a by means of electromagnetic forces.

More preferably, the connection means are able to selectively make the first guide wheel 8a rotate integrally with the second guide wheel 10a or lock it with respect to the body of the motor 12, keeping the first guide wheel 8a locked when it is not integral with the second guide wheel 10a, so that the car 3 cannot move.

According to different embodiments of the invention (shown in fig. 6 to 9), at least one of the first guide wheels (for example, the one designated by the reference numeral 8 a) is functionally connected to the first electric motor 13, and at the same time at least one of the second guide wheels (for example, the one designated by the reference numeral 10 a) is functionally connected to the second electric motor 14, conveniently actuated with a synchronized movement with respect to the first electric motor 13 by means of an electronic control unit (not shown).

Referring again to the example shown in fig. 6 to 9, it should be noted that the second guide wheel 10b is integrally keyed in rotation on the shaft 15 of the second motor 14, while the first guide wheel 8b, coaxial with the second guide wheel 10b, is freely mounted on the same shaft 15.

In both of the embodiments shown, the coupling means 5 conveniently comprise at least one pair of

engagement bars

16a and 16b facing each other, parallel to each other and oriented substantially along the direction of movement of the car 4.

In particular, the engagement levers 16a, 16b are mutually connected by means of lever mechanism means 17 which allow to provide the passage of the engagement levers 16a, 16b from a mutually closed position (such as, for example, one shown in fig. 1 or 6), in which the coupling means 5 are in the inactive condition, to a mutually spaced position (shown in fig. 2 and 3 or 7 and 8), in which the coupling means 5 are in the active condition, and vice versa.

As shown, one of the engagement levers (for example, the one designated by 16a in the figures) is connected to the second flexible element 9, so that, thanks to the traction applied to the engagement lever 16a by the second flexible element 9, by means of lever mechanism means, the transition of the engagement levers 16a and 16b from the mutually closed position to the mutually spaced position and vice versa can be achieved.

More specifically, for example, the articulation lever 16a is connected to the second flexible element 9 by means of a lever 17a, the lever 17a belonging to the lever mechanism means 17 and being hinged at both ends thereof to the

articulation levers

16a and 16b, and the intermediate portion of the lever is hinged to the carriage 7a and is engaged with the second flexible element 9 by means of a slot connecting coupling formed by a pin 18 fixed to the second flexible element 9, which is integral with the slide 9a and is formed by a slot 19 formed in the lever 17a and along which the pin 18 can be made to slide.

For completeness' sake, it should be noted that advantageously the lever mechanism means 17 also comprise a second lever 17b, arranged below the lever 17a and hinged to the coupling levers 16a and 16b at the opposite ends of the lever and to the carriage 7a in the middle part of the lever.

Conveniently, the

abutment elements

20a and 20b are associated with the landing door 6 and are arranged on mutually opposite sides with respect to the

engagement bars

16a, 16b and are designed to be engaged by the

engagement bars

16a and 16b when the abutment elements are moved into the mutually spaced position, so as to make the landing door 6 integral with the car door 4.

These

abutment elements

20a, 20b are mounted, for example, so that they can rotate freely about respective mutually parallel axes in correspondence with

support elements

21a and 21b that project upwards from the landing door 6.

Conveniently, one of the abutment elements, for example the one designated by 20a, may comprise a roller 22, while the other of the abutment elements 20b may comprise a cam 23 eccentrically pivoted to the respective support element 21b and rigidly connected to an engagement lever 24 suitable for engaging a retaining pin 25 integral with the structure of the building to provide removable locking of the landing door 6 with respect to the structure of the building.

The operation of the device according to the invention is carried out as follows.

With reference to the embodiment shown in figures 1 to 5, once the car 4 has reached the desired floor with the car door 3 in the closed condition and the engagement levers 16a, 16b in the mutually closed position, said levers are inserted between the

abutment elements

20a, 20b, while the engagement lever 24 is engaged with the retaining pin 25, so as to ensure the locking of the landing doors 6 in the closed condition, as in the case shown in figure 1.

At this point, with the removable kinematic transmission means 11 in the inactive condition, the motion source 12a is activated so as to rotate the drive shaft 12 in one direction and therefore the second guide wheel 10a, which rotation generates a motion of the second flexible element 9 that causes a movement of the slide 9a corresponding to the sliding of the pin 18 along the slot 19 of the rod 17a and therefore a rotation of the rod 17a that consequently pushes the engagement levers 16a and 16b towards the mutually spaced position so that they can come into contact with the

abutment elements

20a and 20 b.

The reaching of the portions of the engagement levers 16a and 16b to the mutually spaced position causes the tightening of the engagement levers 16a, 16b against the

abutment elements

20a and 20b so as to make the car door 3 and the landing door 6 integral with each other and further to cause the rotation of the cam 23 about its pivot axis so as to cause the disengagement of the engagement lever 24 from the retaining pin 25, as in the case shown in fig. 2.

At this point, the removable kinematic transmission means 11 are actuated so as to move them to the active state and thus make the first guide wheel 8a rotationally integral with the second guide wheel 10 a.

In this case, the sense of continuing the rotation is that the engagement levers 16a and 16b produce a transition from the mutually closed position to the mutually spaced position, the drive shaft 12 produces a rotation of both the second guide wheel 10a and the first guide wheel 8a, and therefore a movement of both the second flexible element 9 and the first flexible element 7, which produces a movement of the carriage 7a, the sense of this movement being that it causes an opening movement of the car door 3, which is pulled to open, thanks to the coupling of the car door to the landing door 6 (which coupling is provided by the engagement levers 16a and 16b), also opening the landing door 6, until the condition of fig. 3 is reached.

At this point, by reversing the rotation direction of the drive shaft 12, the car door 3 and the landing door 6 can be returned to the closed state, and the situation in fig. 2 can be returned to.

Subsequently, the removable kinematic transmission means 11 are returned to the inactive condition, so that the rotation of the drive shaft 12 can generate the movement of the second flexible element 9 only, and by means of the slider 9a the movement of the second flexible element can act on the lever 17a in order to return the engagement levers 16a and 16b to the mutual closing position, thus achieving the disengagement of the car door 3 from the landing door 6 and the return of the engagement lever 24 into engagement with the retaining pin 25.

Instead, in the embodiment of fig. 6 to 9, the movement of the first flexible element 7 is performed by means of a first motor 13, while the movement of the second flexible element 9 is performed by a second motor 14.

In particular, in this embodiment, starting from the situation of fig. 6 (which is similar to the situation of fig. 1 of the previous embodiment), the first motor 13 remains stationary, while the second motor 14 is actuated in order to move the engagement levers 16a and 16b into the mutually spaced position and thus effect the coupling of the car door 3 with the landing door 6 and the disengagement of the engagement lever 24 from the retaining pin 25, as shown in fig. 7.

At this point, the first motor 13 and the second motor 14 are actuated in synchronized motion so as to move the car door 3 and the landing door 6 together, moving them into an open state, as shown in fig. 8.

The first motor 13 and the second motor 14 are kept in synchronous motion throughout the steps of opening the car doors 3 and the landing doors 6, and by reversing the direction of rotation of the first motor 13 and the second motor 14, synchronization is also kept throughout the steps of closing the

doors

3 and 6 until the return to the situation in which fig. 7 occurs. Once the closing steps of the car door 3 and the landing door 6 have been completed, the transition of the engagement levers 16a and 16b from the mutually spaced position to the mutually closed position is carried out to actuate only the first motor 14 in the same direction as that which produces the closing of the

doors

3 and 6, and to stop the rotation of the first motor 13, so as to return to the situation of fig. 6.

In practice, it has been found that the invention achieves the intended aim and objects.

The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.

In fact, any material and any possible shape and size may be used, according to the requirements and to the state of the art.

The disclosures in italian patent application No. 102017000050340 from which this disclosure claims priority are incorporated herein by reference.

Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. A device for actuating an elevator door, comprising: -moving means (2) for moving a car door (3) supported by a car (4) of the elevator; and at least one coupling device (5) for coupling between the car door (3) and a landing door (6), which is suitable for conveying a call from an inactive state to an active state, wherein the coupling device is suitable for making the car door (3) and the landing door (6) corresponding to a stopping floor of the car (4) integral with each other, and for conveying a call from an active state to an inactive state, wherein the coupling device is suitable for making the car door (3) and the landing door (6) corresponding to a stopping floor of the car (4) separate from each other, the moving means (2) comprising at least one first flexible element (7) for transmission, which is functionally connected to the car door (3) and extends between first guide wheels (8a, 8b), -making at least one of said first guide wheels motor-driven, characterized in that said coupling means (5) are made actuatable between said inactive condition and said active condition by means of a driven second flexible element (9);

wherein the driven second flexible element extends between second guide wheels (10a, 10 b);

characterized in that the second guide wheels (10a, 10b) are arranged such that their axes are parallel to the axes of the first guide wheels (8a, 8 b).

2. Device according to claim 1, characterized in that said first guide wheel (8 a),

8b) Is functionally connected to a first motor (13), at least one of said second guide wheels (10a, 10b) is functionally connected to a second motor (14) which can be actuated with a synchronous movement with respect to said first motor (13).

3. Device according to claim 1 or 2, characterized in that it comprises removable kinematic transmission means (11) between at least one of said first guide wheels (8a, 8b) and at least one of said second guide wheels (10a, 10 b).

4. Device according to claim 3, characterized in that the removable kinematic transmission means (11) comprise electromagnetically activated connection means.

5. An arrangement according to claim 1 or 2, characterized in that the coupling device (5) comprises at least one pair of engaging levers (16a, 16b) facing each other and parallel to each other and oriented substantially along the direction of movement of the car (4), which engaging levers (16a, 16b) are interconnected by means of lever mechanism means (17) which are adapted to allow the engaging levers (16a, 16b) to pass from a mutually closed position, in which the coupling device is in the inactive state, to a mutually spaced position, in which the coupling device (5) is in the active state, one of the engagement levers (16a, 16b) is connected to the second flexible element (9).

6. Device according to claim 1 or 2, characterized in that said first flexible element (7) and said second flexible element (9) comprise respective drive belts.