DE102004060282A1 - Sliding door drive method for use in e.g. escape route, involves switching motors, electrically in series, during normal operation, and controlling motors by main output stage and energy store during emergency door opening - Google Patents

Abstract

The method involves switching direct current motors (1,2) of sliding doors, electrically in series, during normal operation. The motors are controlled by a main output stage which is fed from a power supply unit. The motor (1) is controlled by the stage, and the motor (2) is controlled directly from an energy store or indirectly from the energy store over an auxiliary output stage, during an emergency opening of the door. An independent claim is also included for a device for an automatic drive of a sliding door.

Description

automatic Drives for sliding doors for the Use in escape and rescue routes have increased requirements in terms of warranty to fulfill the release of the escape route. In addition to mechanical solutions (e.g. come with escape direction in escape direction swing wings) also come so-called redundant systems are used. These systems have two independent channels with which an opening movement the sliding door carried out can be. Both channels be in regular Intervals tested and upon detection of the failure of one of the two channels with the other channel an emergency opening carried out; the door then remains in the open Status.

There in case of failure of the power grid also an emergency opening will be carried out must, in redundant systems an energy storage is needed. On the one hand exist solutions with a mechanical energy store (steel spring, rubber cord, gas spring), which directly or indirectly via a coupling connected to the door wings is.

Such solutions are for example in the patents DE 39 40 762 A1 . EP 0 663 505 B1 or DE 195 33 153 C2 described.

On the other hand, there are solutions with an electrical energy storage (accumulators, batteries). Since the opening of the door in this case is motorized, these approaches always require two motors to meet the requirement for two independent channels can. Such solutions are for example in the patent EP 0 984 130 B1 or the utility model DE 200 13 770 U1 described.

The known solutions for automatic Drives for sliding doors with two motors have several disadvantages. Often these have Solutions one Main engine for the normal operation and an auxiliary engine, which only in case of failure the power grid comes into play.

Next the economic Disadvantage that incurred as a cost auxiliary motor in normal operation is unused, arises in the usual use of DC motors also the technical disadvantage that the life of the collector of the auxiliary motor because of the lack of energizing train no patina can and therefore has a significantly reduced life.

But also the solution approaches, at which used in normal operation both motors to move the door are not unproblematic. In the known embodiments is thereby each of the two connections of the two engines with the Amplifier connected, which is a correspondingly extensive power amplifier with a total of four motor connections presupposes.

Under the requirement of using two identical engines One strives for both engines as possible at all times provide the same torque. This is most optimally done with DC motors by feeding a current of the same strength in both motors, which by a corresponding complex control in the final stage ensured must become.

Of the The invention is therefore based on the object, an automatic Drive for sliding doors to realize with two engines, the cheaper, easier and more reliable is working.

to solution the task is the invention by the technical teaching of claim 1.

The hereinafter described invention for an automatic drive for sliding doors with two Motors for the use in escape and rescue routes points to the diverse approaches described Advantages.

Thereby, that the two DC motors in electric operation electrically in Series are switched, they are operated without any effort must also flowed through by the same current, what in use of two identical engines, which will be presupposed in the following should, also causes the same torque.

By the series connection of the motors is sufficient for normal operation with a conventional power amplifier two motor connections. The series connection of the motors in normal operation results also that the engines in carrying out an emergency opening to Achieving the same speed as in normal operation only with half the voltage as the series connection of the motors in normal operation need to be fed. This makes possible, that the energy storage to carry out an emergency opening at failed power supply have a correspondingly lower voltage may, possibly, the use of certain alternative energy storage, such as. the use of capacitors instead of accumulators, only technically sensible and economical makes interesting.

By the series connection of the motors in normal operation is not least in a simple Wei se ensures that the switching of one of the two each associated with a motor switching means for performing an emergency opening interrupts the series connection of the two motors and thus the other motor is disconnected from the power amplifier and thus ensures that he can not generate torque in the closing direction.

Instead of Of two mechanically separate motors can also be a motor-gear unit be used, in which the rotors of the electrically continue completely separate motors are arranged on a common shaft. This results opposite two separate engine-transmission units the advantage of a lower Friction when operating with only one engine, because then the other engine is not backwards over one Gearbox is driven.

For the emergency opening sees the invention provides two redundant, electrically completely separate channels, which everyone for at certain intervals (e.g. within a test period of 4 hours) on operability Is tested. This ensures that within the test time a failure (device side or software side) is recognized by one of the two channels and with the another, still intact canal an emergency opening can be carried out.

Of the first channel consists essentially of a first motor and a Part of the main output used in normal operation, where however, in the implementation an emergency opening ensured by the appropriate connection of the engine that this only generate a moment in the opening direction can. The second channel consists essentially of a second Motor and an energy storage, between which if necessary an auxiliary output stage is arranged. The main output stage is thus used on the one hand in normal operation of the control of the two in series switched motors and on the other hand in an emergency opening with the channel 1 of the control of the engine of channel 1.

Of the Subject of the present invention does not arise only from the subject matter of the individual claims, but also from the combination the individual claims among themselves.

All in the documents, including Summary of information and features, in particular the spatial training shown in the drawings as claimed essential to the invention, as far as they individually or in Combination opposite the prior art are new.

in the Below, the invention will be described with reference to only one embodiment illustrative drawings closer explained. Here are more from the drawings and their description Essential to the invention features and advantages of the invention.

1 shows a schematic diagram of a sliding door with an automatic drive with two motors for use in escape and rescue routes.

2 shows a block diagram of the circuit for driving the two motors.

The example in 1 shown sliding door includes two leaves 10 , which each with two carriages 11 on a running track 12 are slidably suspended in the horizontal direction. To automate the opening and closing movement are on the door wings 10 takeaway 13 mounted, which in turn suitably with the timing belt 15 are connected. The timing belt 15 on the one hand passes over a pulley 14 and on the other hand, one on the gearbox 16 attached output gear. On the input shaft of the transmission 16 There are two electrically separate motors 1 and 2 whose rotors are mounted on a common shaft. The control of the two motors 1 and 2 via the door control 17 ,

The example in 2 illustrated block diagram of the circuit for controlling the motors in turn contains the two DC motors 1 and 2 , To the engine 1 belongs a switching means 22 and to the engine 2 a switching means 25 , The switching means 22 and 25 are executed in the illustrated embodiment as a changeover relay.

In normal operation both relays are energized and the two motors 1 and 2 thus electrically connected in series and from the main output stage 20 controlled, which via the power supply 21 is fed from the mains.

To carry out an emergency opening with the engine 1 becomes the relay 22 put in the non-excited state. This will be the series connection of the two motors 1 and 2 separated and the engine 1 so to a part of the main output stage 20 connected that he can only generate a torque in the opening direction.

To carry out an emergency opening with the engine 2 becomes the relay 25 put in the non-excited state. This will also be the series connection of the two motors 1 and 2 separated and the engine 2 so to the auxiliary output stage 23 connected that he can only generate a torque in the opening direction.

The auxiliary output stage 23 becomes from an energy storage 24 fed, which allows the execution of at least one opening movement even with failed mains. In certain embodiments of the energy storage 24 Alternatively, it is also possible to the auxiliary output stage 23 to renounce and the energy storage 24 directly to the switching device 25 to join. The control of the processes is handled by a process control 26 ,

1

engine

2

engine

10

door

11

carriage

12

runner

13

takeaway

14

idler pulley

15

toothed belt

16

transmission

17

door control

20

main amplifier

21

power adapter

22

switching means

23

auxiliary amplifier

24

energy storage

25

switching means

26

flow control

Claims (11)

Automatic two-channel sliding door automation system, each comprising a DC motor for use in escape and rescue routes, in which, in the event of the failure of either of the two ducts or of the power grid, emergency opening is carried out, characterized in that the two motors ( 1 . 2 ) are mechanically coupled together and that in normal operation the two motors ( 1 . 2 ) are electrically connected in series and together from one of a power supply ( 21 ) fed main output stage ( 20 ) and when performing an emergency opening this main output stage ( 20 ) or part of this main output stage ( 20 ) the control of the first motor ( 1 ) and the control of the second motor ( 2 ) directly from an energy store ( 24 ) or indirectly via an auxiliary power amplifier ( 23 ) from an energy store ( 24 ) he follows. Method according to Claim 1, characterized in that the energy store ( 24 ) is able to supply the energy for at least one with the second motor (even if the mains supply fails). 2 ) emergency delivery. A method according to claim 1 or 2, characterized in that the switching of one of the two each a motor ( 1 . 2 ) associated switching means ( 22 . 25 ) for performing an emergency opening the series connection of the two motors ( 1 . 2 ) and thus the other engine from the main output stage ( 20 ) is separated and thus ensures that it does not generate torque in the closing direction. Method according to one of claims 1 to 3, characterized in that in normal operation, both switching means ( 22 . 25 ) are in the switching state in which both motors ( 1 . 2 ) electrically connected in series and from the main output stage ( 20 ), which via a power supply ( 21 ) is fed from the power supply that for carrying out an emergency opening with the engine ( 1 ) the switching means ( 22 ) is put into the switching state in which the series connection of the two motors ( 1 . 2 ) and the engine ( 1 ) to a part of the main output stage ( 20 ) is connected, that he can only generate a torque in the opening direction and that for carrying out an emergency opening with the engine ( 2 ) the switching means ( 25 ) is put into the switching state in which the series connection of the two motors ( 1 . 2 ) and the engine ( 2 ) directly or indirectly via an auxiliary power amplifier ( 23 ) on an energy store ( 24 ) connected. Device for carrying out the method according to one or more of claims 1 to 4, characterized in that the two motors ( 1 . 2 ) Are DC motors, which are approximately the same electrically and mechanically formed and electrically connected in series. Device according to claim 5, characterized in that the two motors ( 1 . 2 ) work on a common drive shaft. Apparatus according to claim 5, characterized in that the rotors of the two motors ( 1 . 2 ) are arranged on a common shaft. Device according to one of claims 5 to 7, characterized that accumulators as energy storage to carry out a Emergency opening at failed mains are used. Device according to one of claims 5 to 8, characterized that capacitors as energy storage for performing a Emergency opening at failed mains are used. Device according to one or more of the preceding claims 5 to 9, characterized in that the switching of the two motors ( 1 . 2 ) between normal operation and execution of an emergency opening, each with a respective motor associated switching means ( 22 . 25 ), wherein the switching means ( 22 . 25 ) are arranged so that the Switching of only one of the two switching means ( 22 . 25 ) for performing an emergency opening the series connection of the two motors ( 1 . 2 ) and by switching the belonging to the respective motor switching means ( 22 . 25 ) this to its intended for the implementation of an emergency opening power amplifier ( 20 . 23 ) and / or its designated energy storage is connected. Device according to one or more of claims 5 to 10, characterized in that the switching means ( 22 . 25 ) are designed as relays.