CH628111A5 - Sliding door with a driven door wing - Google Patents

Description

The invention relates to a sliding door with at least one door leaf driven by an electric motor and an electronic control.

The automatic sliding doors are mainly used in public buildings, shops and department stores.

Two types of drive are known, namely the electro-mechanical drive and the purely electrical drive.

The electromechanical drive, which also includes those drives that work with pneumatic or hydraulic power transmission elements, has a rotary electric motor and mechanical transmission elements, such as chains, ropes or toothed belts or the like, for generating the linear movement of the door leaves.

In the case of the purely electric drive, an electric linear motor is used, through the electric field of which a copper guide rail is guided. The motor can be fixed and the copper bar can be installed movably, or the copper bar can be fixed and the motor can be arranged movably.

These drives require the following requirements:

a) the movement limits or end and intermediate positions of the door leaves are signaled and reported by limit switches,

b) the actuation pulses are given by pulse generators, such as light barriers (photocells), pneumatic or electrical contact mats, switches or radar motion detectors,

c) The corresponding door programs (automatic, permanently open, after work, always closed, winter opening, pharmacy, shop closing, hotel operation etc.) are selected using a selector switch.

The known controls of these door drives are constructed in such a way that a corresponding, separate circuit using electrical and electronic components is necessary for each program step, which are linked to a sequential circuit by the path-dependent components (limit switches).

These controls involve a considerable amount of production work and therefore require a correspondingly large amount of space. In addition, there is the problem in special production that not all possible programs can be provided for cost reasons, since these are not required for all objects. If necessary, the additional control must then be retrofitted or run through as a one-off production.

With these known controls it is only possible to regulate the movements of the doors with a constant input value that is set once. Increased resistance due to friction, wind loads, etc. cannot be compensated and therefore have a negative effect on the functional behavior of the door.

The invention has for its object to design a sliding door drive with electronic control so that regulation of the door leaf depending on external influences is possible, that it covers the entire range of control options and is cheaper compared to the known controls and also considerably smaller dimensions than the known controls.

According to the invention, this object is achieved by a controller which has a microprocessor with external memory elements, the input side of which is coupled to control pulse organs and the output side of which is coupled to power electronics for powering the drive machine or the drive machines.

The microprocessor is the size of part of a matchbox and is permanently programmable with all data for all door programs. Switching elements or switching means make it possible to subsequently limit or expand the programs if the customer so requests.

It is also possible to superimpose an additional microcomputer for program expansion, e.g. to link several interdependent drives.

The microprocessor also enables control of a constant driving speed. With his computing power, he compares the entered setpoint, which he specifies and optimizes himself, with the actual value of the speed via a rotary encoder or similar speed-dependent pulse generator and compensates for this by intervening in the power control. Due to this control capacity of the microprocessor and the extremely short reaction times, an additional brake for delay effects (linear drive with eddy current brake) in the end positions can be dispensed with in these systems, since the microprocessor enables the control of a three-phase inverter and thus a change in direction of rotation or reversal of thrust of the drive machines achieved to delay the speed.

The control according to the invention offers a further advantage in the service area by integrating a test program, which is also evaluated and signaled by the microprocessor. Due to the size of the controller, the entire controller can also be easily replaced using a plug connection.

This control according to the invention also offers a special feature in the area of security, which is very important for these doors. If the door or the door leaf runs onto an obstacle and comes to a standstill, the microprocessor registers this standstill phase and immediately gives the impulse for the opposite movement of the door leaves. The response time of the control is in the millisecond range.

In the case of sliding doors with conventional controls, considerable mechanical expenditure has to be made especially for these safety circuits.

5

10th

15

20th

25th

30th

35

40

45

50

55

60

65

An embodiment of the invention is shown in the drawings and is described below.

Show it:

Fig. 1 is a two-leaf sliding door in perspective and

FIG. 2 shows a schematic illustration of the electronic control and the drive of the sliding door according to FIG. 1.

The sliding door shown in Fig. 1 consists essentially of two movable door leaves 1, two fixed side parts 2 and a fixed support 3, in

3 628111

which the drive elements and the control for the sliding door leaf 1 are arranged.

A contact mat 4 is assigned to the door leaves 1 as a control pulse element.

s The controller has a microprocessor 5, which is equipped with external memory elements 6, in which various programs are stored. The input side 7 of the microprocessor is coupled with the control pulse elements 4 and the output side 8 with power electronics 9, via which the power supply to the drive machine 10 is regulated. The control and the drive motor can be arranged in the profile support 3 above the sliding sash.

H

1 sheet of drawings

Claims (5)

628111 1. Sliding door with at least one door wing driven by an electric motor and an electronic control, characterized by a microprocessor (5) with external memory elements (6), the input side (7) with control pulse elements (4) and the output side (8) with power electronics ( 9) are coupled to power the drive machine or the drive machines (10). 2. Sliding door according to claim 1, characterized in that the drive and the control are provided in a support profile (3) arranged above the door leaf (1). 2nd PATENT CLAIMS 3. Sliding door according to claim 1 or 2, characterized by a superordinate microcomputer for linking several drive systems. 4. Sliding door according to claim 1, characterized in that control signals generated by the wing movement are evaluated in order to generate drive impulses which ensure optimal driving behavior even under the influence of external disturbance variables, such as e.g. cause increased resistance due to friction, wind load. 5. Sliding door according to claim 1, characterized in that the control signals generated by the wing movement in abnormal operation, e.g. when it is at a standstill by a trapped person, be evaluated so that the safety-related reversal takes place.