DOOR SYSTEM

Abstract

An elevator door system has a shaft door, a car door, a car door drive and a door coupling that couples the car door to the shaft door. An electrically activated car door lock, locks and unlocks the car door in a closed position. The door coupling includes a contact body with a length dimension greater than a spacing between a pair of guide webs and a width dimension smaller than the guide web spacing. The contact body is arranged rotatably on the car door between the guide webs and a lever is connected to a drive means and rotationally to the contact body, the contact body being rotated by a movement of the drive means from a decoupled position, in which the contact body is arranged with play between the guide webs due to the width dimension, into a coupling position, in which the contact body touches the guide webs.

Claims

1-15. (canceled)

16. A door system for an elevator, the door system having a shaft door, a car door, a car door drive and a door coupling that couples the car door to the shaft door, the car door and the shaft door when coupled being movable between an open position and a closed position, the door system comprising: the car door having an electrically activated car door lock that locks and unlocks the car door when the car door is in the closed position; the shaft door having an electrically activated shaft door lock that locks and unlocks the shaft door when the shaft door is in the closed position; wherein the car door drive includes a motor and a drive means, the drive means moving the car door from the closed position to the open position and back to the closed position; wherein the door coupling has a first part arranged on the car door and a second part arranged on the shaft door; wherein the second part of the door coupling has a vertically aligned first guide web projecting from the shaft door and a vertically aligned second guide web projecting from the shaft door, the first and second guide webs being arranged at a fixed guide web spacing from one another; wherein the first part of the door coupling has a contact body, the contact body having a length dimension along a length direction that is greater than the guide web spacing, and the contact body having a width dimension along a width direction that is smaller than the guide web spacing; wherein the contact body is arranged rotatably on the car door between the first guide web and the second guide web when the car door and the shaft door are arranged together; a lever connected to the drive means and the lever being rotationally fixed to the contact body; and wherein the contact body is rotated, by movement of the drive means, from a decoupled position in which the contact body is arranged between the first and second guide webs with play due to the width dimension being smaller than the guide web spacing, into a coupling position in which the contact body touches the first and second guide webs.

17. The door system according to claim 16 wherein the car door has at least one car door leaf and the shaft door has at least one shaft door leaf.

18. The door system according to claim 16 wherein the contact body, the first guide web and the second guide web are arranged above the car door and/or above the shaft door.

19. The door system according to claim 16 including a pretensioning device that applies a pretensioning force to the contact body in a direction of the decoupled position.

20. The door system according to claim 19 wherein the pretensioning device is an elastomer torsion spring.

21. The door system according to claim 16 wherein the first guide web and the second guide web have a common guide web base.

22. The door system according to claim 16 wherein the drive means rotates around a first roller and a second roller.

23. The door system according to claim 22 wherein the first roller is driven by the door drive.

24. The door system according to claim 22 including a connector connecting the lever to the drive means, and the connector connecting a first end of the drive means to a second end of the drive means.

25. The door system according to claim 16 wherein a tensile force exerted by the drive means on the lever to move the contact body into the coupling position is less a force exerted by a door closing device on the shaft door.

26. The door system according to claim 16 wherein the car door has a first car door leaf and a second car door leaf, the shaft door has a first shaft door leaf and a second shaft door leaf, the door coupling couples the first car door leaf to the first shaft door leaf.

27. An elevator comprising: a car; the door system according to claim 16; a position-measuring device that detects a position of the car; and a control device receiving the detected position from the position-measuring device and evaluating the position to control movement of the door system between the open position and the closed position.

28. A method for operating the elevator according to claim 27 comprising steps of: coupling the car door to the shaft door by operating the car door drive to displace the drive means a first distance in a direction of the open position and thereby rotate the contact body until the door coupling is coupled; unlocking the car door and the shaft door by sending an electrical signal to the car door lock and the shaft door lock; and opening the car door and the shaft door by operating the car door drive to displace the drive means a second distance in the direction of open position.

29. The method according to claim 28 including, after the coupling and before the unlocking, resetting the door drive to relieve the car and shaft door locks.

30. The method according to claim 28 including closing the car door and the shaft door to the closed position.

31. The method according to claim 28 comprising further steps of: closing the car door by operating the car door drive to move the drive means a third distance in a direction of the closed position until the car door and the shaft door are closed; locking the car door and the shaft door; and uncoupling the door coupling by operating the car door drive to move the drive means a fourth distance in the direction of the closed position.

Description

DESCRIPTION OF THE DRAWINGS

[0074] In the figures:

[0075] FIG. 1 shows a car door according to the invention,

[0076] FIG. 2 shows a shaft door fitting the car door shown in FIG. 1,

[0077] FIG. 3 shows a horizontal section through the door coupling,

[0078] FIG. 4 shows a view of the deactivated door coupling in coupled position,

[0079] FIG. 5 shows a view of the activated door coupling in coupled position, and

[0080] FIG. 6 shows an elevator with the car door and shaft door according to the invention.

DETAILED DESCRIPTION

[0081] FIG. 1 shows the car door 21 of the elevator 100 of FIG. 6. The door system 1 is designed as a telescopically opening car door 21. A first car door leaf 21a opens to the right twice as fast as a second car door leaf 21b. The first and second car door leaves 21a, 21b are guided at the lower end on a car door sill 3a. When open, both car door leaves 21a, 21b would be located on the right under the door drive 4. The mechanism which causes the first car door leaf 21a to move twice as fast as the second car door leaf 21b in the telescopically opening doors is not shown. A door drive 4 is attached to the car door transom 2a. The door drive 4 moves a drive means 14 via a roller 5. The drive means 14 is guided over the two rollers 5, which are arranged at substantially opposite ends of the door transom 2a. A connector 15 connects the ends of the drive means 14 to one another and also establishes a connection between the drive means 14 and the lever 18. The lever 18 is connected to the contact body 13 in a rotationally fixed manner. They thus form a unit. The unit consisting of lever 18 and contact body 13 is mounted on a bearing 51 which is located on the base 17. The base 17 is designed such that the base 17 and the lever 18 are located substantially vertically over and above the first car door leaf 21a. In such a way that substantially only the contact body 13 protrudes beyond a projection of the first car door leaf 21a in order to be able to couple with the opposite first shaft door, or the first and second guide webs attached thereto.

[0082] The first car door leaf 21a has a latch stop 34. The latch 33 of the car door lock 31 engages with the latch stop 34 when the car door lock 31 is not activated. As a result, the car door 21 and in particular the first car door leaf 21a is locked. The car door lock 31 is activated by activating the car door lock actuator 32. For this purpose, the actuator 32 can have a lifting magnet which is energized for activation, and the lifting magnet then lifts the latch 33 out of engagement with the latch stop 34 via a magnetic force. The weight of the latch or the force of a spring can act as a counterforce.

[0083] FIG. 2 shows the shaft door 22 which would be arranged together with the car door 21 of FIG. 1 in a door system 1. The door system 1 comprises the combination of the car door 21 as shown in FIG. 1 and the shaft door 22 fitting therewith, as shown in FIG. 2. The components of the door system 1 shown in FIG. 2 are substantially laterally reversed relative to the representation of similar components of the car door 21 in FIG. 1 because the shaft door shows a view from the opposite direction.

[0084] The shaft door 22 also opens telescopically. The first shaft door leaf 22a and the second shaft door leaf 22b are guided along the shaft door sill 3b and the shaft door transom 2b. The shaft door lock 41 is also constructed analogously to the car door lock. A shaft door latch 43 is, in the non-activated state, in engagement with a shaft latch stop 44. The actuator 42 of the shaft door lock can be energized to lift the latch 43 out of engagement with the latch stop 44.

[0085] A first guide web 11 and a second guide web 12 are attached to the first shaft door leaf 22a. The two guide webs 11, 12 are arranged such that the contact body 13 is arranged between the first guide web 11 and the second guide web 12. The contact body 13 is shown in dashed lines because it is attached to the car door 21 and would therefore not actually be visible when looking at the shaft door 22. It is therefore shown where the contact body 13 would be located if the car 7 (see FIG. 6) were on the same floor. The guide webs 11, 12 are attached independently of one another to the first shaft door leaf 22a. In addition, a part of the guide webs 11, 12 is mounted vertically above the first shaft door leaf 22a. Only enough of the guide webs 11, 12 protrudes beyond the first shaft door leaf 22a to enable a coupling with the opposite contact body 13.

[0086] FIG. 3 shows the horizontal section through a non-activated door coupling.

[0087] The contact body 13 is at a distance from the guide webs 11 and 12. The car can therefore pass the floor without touching the guide webs 11 or 12.

[0088] The guide webs 11 and 12 show a preferred embodiment. The first guide web 11 is connected to the second guide web 12 via a guide web base 50.

[0089] The guide web base 50 of the two guide webs 11, 12 is attached directly to the front (surface facing car door 21) of the shaft door 22. In a more advantageous arrangement, the guide web base 50 would be mounted on top of the shaft door 22 and only the guide webs 11 and 12 would protrude into the gap between the shaft door 22 and the car door 21.

[0090] The situation is similar with the bearing 51 of the contact body 13. The bearing 51 of the contact body 13 is mounted directly on the front (surface facing shaft door 22) of the car door 21. In a more advantageous arrangement, the bearing 51 would be mounted on top of the car door 21 and only the contact body 13 would protrude into the gap between the shaft door 22 and the car door 21.

[0091] FIG. 4 and FIG. 5 show in detail how the contact body 13 and the guide webs 11 and 12 interact. FIG. 4 shows the situation of the deactivated door coupling. This allows the elevator to be moved without the contact body 13 on the car door touching the guide webs 11 and 12 on the shaft door. FIG. 5 shows the situation of the activated door coupling, in which the shaft door and the car door are coupled.

[0092] The contact body 13 has a length dimension L along a length direction and a width dimension B along a width direction.

[0093] The guide webs 11 and 12 are arranged parallel to each other with a guide web spacing D.

[0094] The lever 18 and the contact body 13 are connected to each other at the lower end of the lever 18. In the center of the contact body 13 is the bearing 51 of the contact body 13. The bearing 51 is designed in the form of an elastomer torsion spring pretensioning device such that the situation shown in FIG. 4 corresponds to an untensioned position of the elastomer torsion spring. The lead angle a spans between the vertical and the lever 18. The upper end of the lever 18 is attached to a connector 15. The connector 15 transmits the movement of the drive means 14 to the lever 18. Preferably, it also holds the two ends of the drive means together, often in the form of a traction cable or toothed belt.

[0095] To activate the door coupling, the drive means 14 is moved to the left by the door drive 4. When the door coupling is activated, the contact body 13 touches the guide webs 11 and 12 with two contact points 16. A first contact point 16 touches the first guide web 11 and a second contact point 16 touches the second guide web 12. The contact body 13 is now rotated by a coupling angle . The coupling angle is preferably the same size as the lead angle . Thus, the lever 18 in FIG. 5 is aligned vertically.

[0096] Once the door coupling is activated, the car door lock 31 and the shaft door lock 41 can be unlocked. In order to open the car door 21 and the shaft door 22 together against the force of the door closing device on the shaft door 22, the drive means 14 is moved further to the left. As a result, the force at the contact point 16 between the contact body 13 and the first guide web 11 increases and the car door 21 and the shaft door 22 open together.

[0097] The closing of the car door 21 and the shaft door 22 takes place in the reverse order. It is advantageous here to select the course of movement of the drive means 14 such that the drive means stops briefly at the position shown in FIG. 5. Thus, the car door 21 and the shaft door 22 also stop in the position in which they can be locked. As a result, the closing process is quiet.

[0098] FIG. 6 shows a side view of the elevator 100. The car 7 has a car door 21, which is opposite a shaft door 22. A control device 6 receives signals from a position-measuring device 60 which determines the position along a positioning belt 61 arranged in the shaft. The control device 6 controls the door drive 4 and the car door lock 31 and the shaft door lock 41. The signal to the shaft door lock can be transmitted to the shaft door via another control device in the machine room, or for example directly to the shaft door via radio. The control unit 6, which is preferably arranged on the car 7, can for example also forward the signals from the position-measuring device 60 to a main control unit, for example in a machine room, or receive and execute commands for opening or closing doors from the main control device.

[0099] Finally, it should be noted that terms such as having, comprising, etc., do not preclude other elements or steps, and terms such as a or one do not preclude a plurality. Furthermore, it should be noted that features or steps which have been described with reference to one of the above exemplary embodiments may also be used in combination with other features or steps of other exemplary embodiments described above.

[0100] In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.