ES2308362T3 - DOOR DRIVE, IN PARTICULAR DRIVE DOOR DRIVE. - Google Patents

Abstract

Door drive (1), in particular swing door drive, with a drive unit (2, 2 '', 2 '' '') that can be coupled with a door and through an output shaft (9) which is disposed within a housing (13); with a motor (3) that is in active communication with the drive unit (2, 2``, 2 '' '') and with an elastic energy accumulator (4) located in the housing (13), which is coupled with the drive unit (2, 2``, 2 '' ''), a hydraulic pump (5) being connected as a drive with the motor (3) and which is in hydraulic communication with a first pressure chamber (6) ) assigned to the drive unit (2, 2``, 2 '' '') and with a second independent pressure chamber (7) assigned to the elastic energy accumulator (4), characterized in that a hydraulic damping system is provided ( 24) located in a housing (20) for the drive unit (2, 2 '', 2 '' '') and an intermediate space of the housing (13) adjacent to the second pressure chamber (7), the intermediate space (23) being separated from the independent pressure chamber (7) through a separation wall (21) that is fixed with positive and frictional adjustment n inside the housing (13).

Description

Door drive, in particular swing door drive.

The invention relates to a drive of door, in particular to a swing door drive according to the preamble of claim 1.

A door drive of this class is known from DE 295 21 068 U1. By document DE 40 38 720 C2 a top door closer with linkage is known sliding rails carrying a drive unit by cam, which allows optimal variation of the torque of the door and optimal driving comfort. By its principle, this closer top door would also be suitable as a drive door, but investigations conducted within the framework of the invention have allowed us to see that by applying the oil pressure to the drive unit is a very unfavorable conversion of the hydraulic pressure in the displacement movement - resulting rotation and the new movement of displacement. And it is that approximately 75% of the power that is applied is needed to tension the elastic energy accumulator of a closer of door of this class, while only about 25% of the power can be transferred by the system to accelerate the door. As on the other hand it is desirable to keep the narrow shape of construction of this class of door closers also for door drives, it is not possible to adapt the dimensions of the components at extremely high loads. Thus, the known upper door closer is not suitable as door drive despite its technical advantages functional.

Another swing door drive is known by document DE 197 56 496 C2. This door drive It has an electromechanical drive unit that is equipped of a drive motor and a reducer as well as a power transmission unit connected to it for the door to the which is coupled. The force transmission unit has a spindle with a spindle nut that partially hugs it, which is attached with positive adjustment and friction with a zipper. While this swing door drive can be installed hidden, the variation of the torque of the door is not so optimal as in the door closers described above with cams Due to the large construction width, its installation in standard profiles.

Document DE 1026125 A1 shows a hydraulic swing blade drive where a valve hydraulically controlled can generate a function of maintaining open the door

Therefore it is the objective of the present invention create a door drive of the kind indicated in the preamble of claim 1, which can be installed completely hidden in door or frame profiles commercial, which does not require any special design of the installation of the door and that allows to cushion the opening.

The solution of this objective is obtained by characteristics of claim 1.

The door drive according to the invention allows its hidden installation in the door profile or of the frame, thanks to its compact construction form, and with it Total integration in the door installation.

In particular it is possible to carry out installation in usual narrow door profiles.

Hence the advantage that no special door profiles or special designs that undermine the design of the door installation are needed. In addition, the advantage of an economical assembly of wide application possibilities is obtained, and it is also possible to equip existing door installations in accordance with the invention with subsequent door installations. In addition, the advantage is obtained that in the door drive according to the invention a direct transmission of the force is possible to tension an elastic energy accumulator that allows the process of closing a door to be carried out without having to provide auxiliary energy, and which can therefore be used for fire protection doors. This results in the possibility of avoiding unnecessary loads for the mechanical components, and reducing the necessary working pressure, since greater effective piston surfaces are available. In addition, this design offers the advantage of an increase in displacement, which improves the working range for the usual hydraulic pumps.

Because of the fact that the hydraulic pump of the door drive according to the invention is in hydraulic communication with an independent pressure chamber assigned directly to the elastic energy accumulator, it is obtained a direct application of pressure and therefore a transmission direct from the force to the elastic energy accumulator what causes the tension in its entirety or at least partially initial of the elastic energy accumulator. This way you can totally avoid the inconveniences initially mentioned and why unnecessary losses are avoided.

Since the power to be applied to open a door, in particular a swing door with a door drive equipped with the elastic energy accumulator for the closing process and to be suitable for protection against fire, it is subdivided into two magnitudes of force or torque of turn, you get the advantage that in the door drive according to the invention and due to the allocation of cameras of independent pressure for the drive unit and for the elastic energy accumulator, a pressure of reduced oil to the drive unit since the torque necessary to open and accelerate the door in the output shaft of the drive unit is smaller than necessary for the prestressing of the elastic energy accumulator. The investigations carried out within the framework of the invention have given as values of approach that depending on the size of the door and the weight of the door, approximately 2/3 a ¾ of the power is needed total drive for prestressing the elastic accumulator of energy, while only about ¼ to 1/3 of the power total are needed as a driving torque to open the door.

Since in the compliant door drive it is possible to subdivide this total power to the invention by be provided independent pressure chambers you get a direct application of the pressure of the elastic energy accumulator and therefore it is possible to harness most of the power total directly for prestressing the elastic accumulator of Energy without the need for forwarding. In this way it turns out that avoid unnecessary solicitations of the components, loads in the bearings and friction losses or performance grade. Due to the independent pressure chamber assigned to the elastic accumulator The total effective surface area of the piston is also increased to tighten the elastic energy accumulator, thereby noticeably reduces the necessary system pressure and increases the displacement As a result, the behavior of regulation during the closing process of the door and the assembly of the hydraulic is less delicate.

Due to the relationship between a volume flow higher and a lower pressure you can also use a pump Small construction hydraulics, whose pump characteristic It can be considerably flatter, which allows the pump Be technically simpler and cheaper. It also exists preferably the possibility of using regulating valves pressure or pressure limitation in rush lines or different hydraulic pumps for the respective chambers of pressure, so that if necessary it can be subdivided and adjust the forces of the damping pistons, tensioning of the Dock and / or opening.

In this way the pair of necessary rotation in the output shaft for opening the doors can be generated using a damper piston and a cam system while in a pressure chamber independent spring tensioning work is generated with total independence. In this way and by creating a camera of independent pressure it is possible to perform for example a function of free walking or immobilization function, etc.

When the assigned pressure chamber is provided to the elastic energy accumulator and due to hydraulic control special intended preferably such as by means of the using a solenoid valve, it is possible to perform other hydraulic functions such as freewheel, immobilization hydraulic or hydraulic regulation of the closing sequence.

Through hydraulic damping system the hydraulic damping of the opening. In principle, drive units can be used of different realization.

The subordinate claims have as content advantageous improvements of the invention.

Other details, features and advantages of the invention are deduced from the following description of examples of realization, using the drawings.

These show:

Fig. 1 a schematic representation of simplified principle of an embodiment of a door drive according to the invention,

Fig. 2 an alternative embodiment of the door drive unit,

Fig. 3 another alternative embodiment of the door drive unit according to the invention.

Fig. 1 shows a door drive 1 according to the invention, which can be specially realized as a swing door drive. Door drive 1 has a drive unit 2 that can be coupled to through an exit shaft 9 with a door, not represented in the Fig. 1, for example by means of a lever and a sliding rail with sliding piece. The drive unit 2 is arranged in a housing 13.

The door drive 1 also has a motor 3 as well as an elastic energy accumulator 4 arranged in the housing 13, which is coupled with the motor 3 and with the unit drive 2.

As clearly seen in Fig. 1, the engine 3 is connected forming the drive of a hydraulic pump 5. In the embodiment shown, the motor 3 and the pump Hydraulics 5 are for example embedded in the housing 13. A through the hydraulic pump 5 and a first drive hydraulic 33, the motor 3 is in hydraulic communication with a pressure chamber 7 that is assigned to the elastic accumulator of energy 4. Through a second hydraulic line 34, the motor 3 and pump 5 are in hydraulic communication with a pressure chamber 6, which is assigned to the drive unit 2. This provision makes possible the subdivision of the forces necessary, such as the generation of the torque and / or spring preload to open the door and to tension the elastic energy accumulator 4, which in the case of the example carries a compression spring 12, all of which leads to the advantages initially cited.

In the embodiment represented in the Fig. 1, drive unit 2 is realized as cam drive This cam drive features a disc of displacement cam 8 which is arranged on the shaft of output 9. The displacement cam disc 8 acts together with two force 10 and 11 transmission rollers located at both sides of the output shaft 9 and resting on the tracks of cam of cam disc 8. By its principle, this arrangement is corresponds to the arrangement of the upper door closer of the DE 40 38 720 C2, the content of which is hereby made part of the manifestation content of this application.

The force transmission roller 11 is located in a shock absorber piston 19 arranged in the housing 13 next to the pressure chamber 6.

The force 10 transmission roller is arranged in an opening plunger 18 which is also housed in the housing 13, and which borders a housing enclosure 20 and a intermediate enclosure 23 that is separated from the pressure chamber independent 7 through a separating wall 21.

As Fig. 1 clearly shows, in the pressure chamber 7 is located the spring tensioning plunger 17 which transmits the force necessary to tension the compression spring 12, directly to this one. The spring tensioning piston 17 is attached fixed to the opening piston 18 through a connecting piece 17 'which It is guided tightly through the separation wall 21. To favor tensioning of compression spring 12 (increase in force) several independent pressure chambers 7 can be arranged one behind the other, which would achieve a reduction in the Pressure.

Fig. 1 further shows that the spring 12 rests on a wall 15 of the housing 13 with one of its ends 14, through a spring force adjustment device, while with its other end 16 it is attached to the tension plunger from the pier 17.

As Fig. 1 clearly shows, due to this subdivision of the pressure chambers it is obtained in first of all the possibility of making preferably by suitable hydraulic controls (solenoid valves, throttles or similar) a subdivision of the pressures necessary for the tensioning of compression spring 12 and for opening the door, being able to take advantage of this the advantages of technology of cams. Precisely the cam technology includes thanks to the possibility of making the direction of rotation to both sides, which only one shaft output is needed and can be performed the door opening directions DIN left and DIN right. From This mode can therefore cover all kinds of assembly.  In addition, the extremely compact construction form is obtained initially cited that allows the installation completely hidden in door or frame profiles.

It is also clearly seen from Fig. 1 that the connecting piece 17 'is provided with a gasket 22 in the wall of separation 21. Next to the separation wall 21 comes a intermediate chamber 23 which borders the opening piston 18. The separation wall 21 is fixed with positive and friction adjustment inside the housing 13, and thus represents a counter-support for hydraulic forces. Likewise, a support for the connecting piece is created at the same time 17 '. Through the connecting piece 17 'and the tension piston of the spring 17 passes a pressure balancing hole 32.

The force drive 1 also has a damping system 24. The damping system 24 comprises a junction duct 25 within which an organ of insulation 26, preferably in the form of a valve strangler The junction conduit 25 runs between the intermediate space 23 and accommodation chamber 20. It is also provided bypass conduction 27 between intermediate space 23 and a conduction section 25 'between the isolation member 26 and the housing chamber 20. Fig. 1 also shows a section of conduit 28 enters pump 5 and pressure chamber 7, in which an isolation organ 29 is arranged, preferably in shape of a throttle valve. Finally planned a conduction section 30 that runs between the pump 5 and the pressure chamber 6, in which another organ of insulation 31, again preferably in the form of a valve constriction. If during opening the opening piston 18 moves to the right according to the representation chosen in Fig. 1, the bypass line 27 is closed and increases in the intermediate space 23 the pressure of the oil that dampens opening movements upon reaching a certain opening angle of the door, so that it can be avoided by example that it stumbles against a wall.

An alternative is represented in Fig. 2 for a drive unit 2 'which is realized as connecting rod drive In it the force is transmitted to open the door or to rotate the shaft 9 by means of a connecting rod system 35, known per se.

In Fig. 3 a form of alternative embodiment for the drive unit, which in This Fig. is designated by reference 2 ''. It's about a rack drive (36) known per se, which through of an internal teeth 37 inclined with respect to the housing axis 13, transmits the opening force to a pinion 38.

Reference List

one

Door drive

2, 2 ', 2' '

Drive unit

3

Engine

4

Elastic Energy Accumulator

5

Hydraulic bomb

6

Pressure chamber (unit of drive)

7

Pressure chamber (elastic accumulator of Energy)

8

Displacement cam disc

9

Output tree

10

Force transmission rollers

eleven

Force transmission rollers

12

Compression spring

13

Case

14

Extreme

fifteen

Housing wall

16

Extreme

17

Spring Tensioning Plunger

17 '

Union piece

18

Opening plunger

19

Shock absorber

twenty

Accommodation chamber

twenty-one

Separation wall

22

meeting

2. 3

Intermediate space

24

Damping device

25

Conduction of union

25 '

Driving section

26

Isolation organ

27

Bypass Driving

28

Driving section

29

Isolation organ

30

Driving section

31

Isolation organ

32

Pressure balancing hole

33

First hydraulic driving

3. 4

Second hydraulic drive

35

Connecting rod system

36

Rack drive

37

Internal teeth

38

Pinion.

Claims (14)

1. Door drive (1), in particular swing door drive, with a drive unit (2, 2 ', 2'') that can be coupled with a door through an output shaft (9) and which it is arranged inside a housing (13); with a motor (3) that is in active communication with the drive unit (2, 2 ', 2'') and with an elastic energy accumulator (4) located in the housing (13), which is coupled with the unit of drive (2, 2 ', 2''), with a hydraulic pump (5) connected as a drive with the motor (3) and which is in hydraulic communication with a first pressure chamber (6) assigned to the power unit drive (2, 2 ', 2'') and with a second independent pressure chamber (7) assigned to the elastic energy accumulator (4), characterized in that a hydraulic damping system (24) located in a housing is provided ( 20) for the drive unit (2, 2 ', 2'') and an intermediate housing space (13) adjacent to the second pressure chamber (7), the intermediate space (23) being separated from the pressure chamber independent pressure (7) through a separation wall (21) that is fixed with positive adjustment and friction in the inte rior of the housing (13). 2. Door drive according to claim 1, characterized in that the drive unit (2) is made as a cam drive, comprising a displacement cam disk (8) located on the output shaft (9) and two rollers of force transmission (10, 11) located on both sides of the output shaft (9) and resting on cam tracks of the cam disc (8). 3. Door drive according to claim 1 or 2, characterized in that the elastic energy accumulator (4) carries a compression spring (12), which is supported with one end (14) to a wall of the housing (15) and with the other end (16) in a spring tensioning plunger (17). 4. Door drive according to claim 3, characterized in that the pressure chamber (7) assigned to the elastic energy accumulator (4) is located adjacent to the spring tensioning piston (17). 5. Door drive according to claim 3 or 4, characterized in that the spring tensioning piston (17) is connected to an opening piston (18) of the drive unit (2), the opening piston (18) carrying a force transmission roller (10) of the force transmission rollers (10, 11). 6. Door drive according to one of claims 1 to 5, characterized in that the pressure chamber (6) assigned to the drive unit (2) is located adjacent to a damper piston (19) that supports the other drive transmission roller. force (11) of the force transmission rollers (10, 11). 7. Door drive according to one of the preceding claims 1 to 6, characterized in that the pressure chamber (7) is separated from the enclosure (20) of the housing (13) that houses the drive unit (2), by means of a separation wall (21) fluid tight. 8. Door drive according to claim 1, characterized in that the motor (3) is made as a minimotor of direct current or alternating current. 9. Door drive according to claim 1, characterized in that the drive unit (2 ') is made as a connecting rod drive. 10. Door drive according to claim 1, characterized in that the drive unit (2 '') is made as a rack drive. 11. Door drive according to one of claims 1 to 10, characterized in that the damping system (24) has a connecting line (25) which is provided with an isolation member (26), preferably a throttle valve, and which elapses between the intermediate space (23) and the accommodation space (20), bypass conduction (27) being provided between the intermediate space (23) and a conduction section (25 ') between the isolation member (26) and the accommodation enclosure (20). 12. Door drive according to claim 1, characterized in that an isolation member (29), preferably a throttle valve, is located in a conduction section (28) between the pump (5) and the second pressure chamber (7). . 13. Door drive according to claim 1, characterized in that in an conduction section (30) between the pump (5) and the first pressure chamber (6) an isolation member (31) is arranged, preferably in the form of a throttle valve. 14. Door drive according to claim 1, characterized in that several independent pressure chambers (7) correspond to the elastic energy accumulator (4).