EP3103949A1 - Door drive - Google Patents

Abstract

Described and illustrated is a door drive (1) with a housing (2) and at least one regulating valve (3) for adjustably regulating a fluid flow within the door drive (1). A door drive (1), which is suitable and cost-effective for a plurality of mounting positions, is realized according to the invention in that the one regulating valve (3) or at least one of the several regulating valves (3) has two ends each with an attack (4), in particular for a tool , wherein the one regulating valve (3) or the regulating valves (3) extend through the housing (2) such that the attacks (4) for adjusting the one regulating valve (3) or the regulating valves (3) from outside the housing (2) are operable.

Description

The invention relates to a door drive with a housing and at least one regulating valve for adjustably regulating a fluid flow within the door drive. The invention further relates to a method for producing a door drive. The invention further relates to a method for adjusting the regulation of a fluid flow within a door drive.

Door operators known from the prior art have at least one regulating valve for adjustably regulating a flow of fluid within the door drive. The fluid to be regulated is usually a hydraulic oil. The regulating valve in this case regulates the fluid flow, for example by the regulating valve influencing the cross-sectional area of a fluid channel at at least one section of the fluid channel. A typical field of application are damping functions for damping the movement of the door leaf operatively connected to the door drive.

The setting of the regulating valves of a door drive is usually in the final assembly position, d. H. when the door operator is operatively connected to the door. This is necessary because a presetting of the regulating valves is not useful due to the large number of different doors with correspondingly different properties. A factory adjustment of the door drive to a special door variant is undesirable from a production point of view, since it is much cheaper to produce as few variants of a door drive. Furthermore, it may be necessary to adjust the regulation of the fluid flow after some time. It follows that in the mounting position of the door drive, the regulating valves for adjusting the regulation must be accessible to an operator. In order to protect the regulating valves from damage due to improper operation, the attacks of the regulating valves are made of robust materials, such as metal.

Door operators from the group of overhead door closers can be mounted with their housing both on the door leaf and on the door frame, on the door frame or on the wall in which the door is embedded. Furthermore, a distinction is made between the mounting on the hinge side or the tape opposite side, as well as the mounting on DIN left doors or DIN right doors.

A group of known from the prior art door drives has the disadvantage that at least two variants of the door drive must be made to cover all possible combinations of the previously described installation variants, as is not guaranteed with only one variant that in each case the regulating valves for setting the regulation are accessible to an operator. Alternative door drives from the prior art come with a variant of the door drive to cover all possible combinations of the previously described mounting variants, but have limited functionality. In particular, these door drives are not functional over a door opening angle of at least 180 °, since these door drives must use a symmetrical Hubkurvenscheibe, instead of an asymmetric Hubkurvenscheibe to reduce the number of variants from two to one.

Another group of door operators known from the prior art circumvents the disadvantage of the forced variant variety in that two regulating valves are provided for each regulation of a fluid flow in these door drives, wherein in the mounting position at least one of the regulating valves for adjusting the regulation for an operator is accessible , This in turn has the disadvantage that increased by the Number of components increase the cost of the door drive and reduces the reliability of the door drive. Furthermore, additional space in the door drive for the additional regulating valves and the associated hydraulic channels is necessary. Further, before the assembly in the mounting position no longer accessible regulating valves must be completely closed to adjust in the mounting position with the accessible control valves, the regulation of the fluid flows within the door drive can. It is particularly problematic when it becomes apparent in the mounting position that a no longer accessible regulating valve is not closed. In this case, the regulation of the corresponding fluid flow is limited or not possible, unless the door drive disassembled from its mounting position and the non-closed regulating valve is closed later.

Thus, it is the object of the invention to provide a door drive, which is suitable for several mounting positions and inexpensive. Furthermore, it is the object of the invention to provide a method for producing a door drive, which enables the production of a door drive in a cost effective and simple manner. It is a further object of the invention to provide a method of adjusting the regulation of fluid flow within a door operator which allows the adjustment of the regulation of fluid flow within a door drive in a simple manner.

The previously derived and indicated object is achieved on the basis of the door drive described above in that the one regulating valve or at least one of the several regulating valves has two ends, each with an attack, in particular for a tool, wherein the one regulating valve or the regulating valves so through extend the housing, that the attacks for adjusting the one regulating valve or the regulating valves are operable from outside the housing. This ensures that even if an attack of a regulating valve, for example due to the mounting position hidden and thus can not be operated, at least one other attack for an operator is still accessible. Advantageous developments of the invention are specified in the dependent claims, the description and in the figures.

The door drive may in particular be arranged directly on or in the door leaf, on or in a wall, on or in a door frame or on or in the floor.

The door drive may in particular be selected from the group of overhead door closers, door closers mounted in the door, the frame door closers or the floor door closers.

The door drive can be designed as a mechanical door drive or as an auxiliary power operated door drive.

Mechanical door drives are often referred to as door closers or door closing means with controlled closing sequence. A door closer is capable of storing at least a portion of the energy used during opening of the door by the door opener. After the door has been released by the user, the door closer can use the stored energy to automatically close the door leaf again.

An auxiliary door drive may be, in particular, an electromechanical and / or electrohydraulic and / or pneumatic door drive, whereby the door leaf, ie by means of an electromechanically, electrohydraulically and / or pneumatically generated auxiliary power, can be closed and / or opened. The auxiliary power can in this case be dimensioned such that the auxiliary power acts as a support, ie that the user must expend a reduced intrinsic force when opening and / or closing the door. The auxiliary power can also be dimensioned such that the door is automatically opened by the assistant, ie that no intrinsic force by the addressee in addition to Assistant must be spent. Preferably, the auxiliary power, in particular as a function of the opening angle of the door leaf, adjustable.

In the case of a failure of the auxiliary power, auxiliary door drives preferably continue to fulfill the functions of a mechanical door drive, in particular the function of automatically closing the door.

Door drives preferably have at least one safety device. The safety device can in particular limit the opening force and / or the opening speed. In particular, the safety device can monitor the swiveling range of the door leaf and trigger a safety function when a person or an object gets into the swiveling range of the door leaf. A safety function may include, for example, stopping the door leaf.

Door drives preferably have at least one monitoring device. The monitoring device may in particular have sensors that can detect dangerous environmental conditions, such. As fires, smoke or dangerous concentration of gases (eg carbon monoxide). The monitoring device can trigger a safety function after the detection of dangerous environmental conditions. For example, a security feature may include overriding an automatic opening function of the door.

The monitoring device and the safety device can be designed separately or be formed by a common device.

Door drives preferably have at least one pulse generator. The pulse generator can in particular give the command to open and / or close the door. The command given by the pulser is processed by a controller, with the controller controlling the door leaf movement commanded by the pulser. Pulse encoders are differentiated into conscious impulse generators (eg switches, pushbuttons), through which the door leaf movement is intentionally introduced, and unconscious impulse generators (eg light barriers, radar, contact mats), over which the door leaf movement unconsciously enters upon entering the impulse generator monitored area is initiated.

Furthermore, door drives can control or regulate the closing movement of the door leaf in such a way that the closing process can be delayed for a, in particular adjustable, time. This damping function is also referred to as closing delay.

According to a preferred embodiment of the door drive, the housing is formed substantially cuboid. On the housing decorative elements may be arranged which cover parts of the housing or even the housing substantially completely. The housing is preferably made of a material. In particular, the housing may be made of a metallic material. It is further preferred that the housing is formed in one piece. The housing can be formed by several sections. The housing may be at least partially made of plastic.

Furthermore, it may be provided that the one or more regulating valves are arranged such that in each mounting position of the door drive at least one attack per regulating valve is accessible to an operator. This ensures that in any mounting position each regulating valve is adjustable.

Furthermore, it can be provided that the one regulating valve or at least one of the several regulating valves runs in a bearing or thread. This ensures that the regulating valve or at least one of the regulating valves is guided securely in the housing.

Furthermore, it can be provided that the one regulating valve or at least one of the several regulating valves is mounted in a valve sleeve, wherein the valve sleeve is received in the door drive, in particular in a through-bore. This ensures that the regulating valve or at least one of the plurality of regulating valves is separate from the door drive in the valve sleeve pre-assembled. The valve sleeve may be formed by a tube open at both ends.

Furthermore, it can be provided that the one valve sleeve or at least one of the plurality of valve sleeves is positively and / or positively and / or materially received in the door drive. This ensures that the valve sleeve or at least one of the plurality of valve sleeves is securely connected to the door drive.

Furthermore, it can be provided that the one valve sleeve or at least one of the plurality of valve sleeves has at least one lateral opening for the passage of a fluid flow. This ensures that the one mounted in the valve sleeve regulating valve or at least one of the plurality of valve sleeves mounted in the regulating valves can interact in a simple and direct manner with a fluid flow within the door drive. Through such a lateral opening, a fluid flow can flow both from the door drive in the regulating valve and vice versa. Furthermore, a valve sleeve or at least one of the plurality of valve sleeves can in particular have two lateral openings for the passage of a fluid flow. In this case, a flow of fluid from the door drive into the regulating valve can flow through one of the two openings, and a fluid flow from the regulating valve into the door drive flows through the other of the two openings. The flow direction may in particular be limited to one of the two possible flow directions.

Furthermore, it can be provided that the one regulating valve or at least one of the plurality of regulating valves, a diaphragm is associated, wherein the regulating valve with the associated orifice cooperates such that the degree of coverage of the orifice is dependent on the position of the regulating valve relative to the position of the diaphragm. This ensures that with a few components a simple regulation of a fluid flow within the door drive is made possible. In this case, the diaphragm can be attached directly or indirectly, for example via the valve sleeve to the door drive. In particular, the diaphragm can also be formed integrally with the valve sleeve or the door drive.

Furthermore, it can be provided that the one regulating valve or at least one of the several regulating valves has a first valve piston and a second valve piston, wherein the first valve piston has the first attack and the second valve piston has the second attack, wherein the first valve piston and the second valve piston relative to each other and / or relative to the door drive are movable. This ensures that the one regulating valve or at least one of the several regulating valves is particularly easy to install. Here, the first and the second valve piston can be rigidly connected to one another via a driver.

Furthermore, it can be provided that the first valve piston or the second valve piston or at least one of the plurality of first valve piston or second valve piston has a right-hand thread and the associated other valve piston has a left-hand thread, wherein the valve piston are guided in corresponding right-hand or left-hand threads. This ensures that each mutually associated valve piston are offset in a same direction rotation about the longitudinal axis of the regulating in opposite directions.

It may further be provided that the one first valve piston or at least one of the plurality of first valve piston has an axially aligned receiving space and the associated second valve piston has a regulating pin, wherein the regulating pin projects into the receiving space at least partially. This ensures that a first valve piston or at least one of the plurality of first valve piston and the associated second valve piston lead each other safely.

Furthermore, it may be provided that the one regulating pin or at least one of the plurality of regulating pins has a cone-shaped or frustoconical tip in particular, the tip forming an annular gap valve together with the associated receiving space. This ensures that a clearly defined annular gap is formed, which is adjustable in its size by a relative movement of the first valve piston and the second valve piston. In this case, the annular gap is formed between the tip of the regulating pin and an inner wall of the receiving space.

Furthermore, it can be provided that a diaphragm is arranged between the one regulating pin or at least one of the plurality of regulating pins and the associated receiving space, the degree of coverage of the diaphragm opening being dependent on the position of the first valve piston and / or the second valve piston relative to the position of the diaphragm , This ensures that easily forms the regulating pin with the associated receiving space and the aperture a so-called shutter valve. Here, the diaphragm can also be configured as an integral part of the first valve piston or the second valve piston. Alternatively, the diaphragm can be indirectly, for example via the valve sleeve, or connected directly to the door drive or be designed in one piece with the valve sleeve or the door drive. Furthermore, the diaphragm can be formed by a notch stop. Further, the notch aperture may be formed by a diaphragm sleeve having an axially extending notch, wherein the diaphragm sleeve is arranged in the receiving space and the regulating pin at least partially protrudes into the diaphragm sleeve.

Furthermore, it can be provided that the one regulating valve or at least one of the several regulating valves runs essentially perpendicular to the longitudinal axis of the door drive. This ensures that the regulating valve can be particularly easily installed in the door drive. The longitudinal axis of the door drive can in this case be defined by the longitudinal axis of an energy accumulator arranged in the door drive, wherein the energy accumulator can be formed in particular by a spring, preferably a helical compression spring.

Furthermore, it can be provided that the attacks of the one regulating valve or the attacks of at least one of the regulating valves are arranged on two opposite sides of the housing. For example, in a parallelepiped housing, an attack may be located on the top of the housing and an attack on the underside of the housing, or an attack on the back of the housing and an attack on the front of the housing, or an attack on an end face of the housing and an attack on the other end face of the housing may be arranged.

Furthermore, it can be provided that one of the two valve pistons is mounted in a thread, wherein the other of the two valve pistons is mounted rotatably exclusively about its longitudinal axis.

Furthermore, it can be provided that one of the two valve pistons has a driving contour and the other of the two valve pistons has a corresponding engagement element, wherein the driving contour and the engagement element are engageable with each other such that rotational movements between the valve pistons 9a, 9b are transferable, ie the valve pistons are rotationally coupled.

Furthermore, it can be provided that the valve pistons are movable in the longitudinal direction relative to each other, d. H. the valve piston are translationally decoupled.

This ensures that by operating one of the attacks, both valve pistons are rotated in the door drive. Depending on the direction of rotation, the valve pistons either move towards or away from each other. Through this translational relative movement, the annular gap valve formed by the tip and the receiving space can be adjusted.

Furthermore, it can be provided that the regulating pin has a guide element and the receiving space has a guide area, wherein the guide element can be guided in the guide area. In particular, the guide region can be formed by a round inner contour with a constant radius of the receiving space and the guide element by a cylindrical region of the regulating pin, wherein the radius of the round inner contour substantially corresponds to the radius of the cylindrical portion.

Hereby it is achieved that the play of the annular gap valve formed by the regulating pin and the receiving space is reduced. Thus, the regulating valve can be set more accurately.

• Bereitstellen eines Türantriebs mit einem Gehäuse zur Aufnahme wenigstens eines Regulierventils zur verstellbaren Regulierung eines Fluidstroms innerhalb des Türantriebs,
• Herstellen wenigstens eines Regulierventils, wobei das eine Regulierventil oder die mehreren Regulierventile wenigstens zwei Enden mit je einem Angriff, insbesondere für ein Werkzeug, aufweisen,
• Einsetzen des einen Regulierventils oder der mehreren Regulierventile in das Gehäuse, so dass das eine Regulierventil oder die mehreren Regulierventile sich derart durch das Gehäuse erstrecken, dass die Angriffe zur Verstellung des einen Regulierventils oder der mehreren Regulierventile von außerhalb des Gehäuses bedienbar sind. Hierdurch wird erreicht, dass ein Türantrieb hergestellt ist, bei dem auch wenn ein Angriff des Türantriebs zum Beispiel aufgrund der Montageposition verdeckt und somit nicht bedienbar ist, wenigstens ein anderer Angriff für einen Bediener weiterhin zugänglich ist.

The previously derived and indicated object is further achieved on the basis of the above-described method for producing a door drive in that the method comprises the following steps:

• Providing a door operator with a housing for receiving at least one regulating valve for adjustably regulating a fluid flow within the door drive,
• Producing at least one regulating valve, the one regulating valve or the several regulating valves having at least two ends each with an attack, in particular for a tool,
• Inserting the one or more regulating valves into the housing such that the one or more regulating valves extend through the housing such that the attacks are operable to move the one or more regulating valves from outside the housing. This ensures that a door drive is made, in which even if an attack of the door drive, for example, due to the mounting position hidden and thus can not be operated, at least one other attack for an operator is still accessible.

Advantageous developments of the invention are specified in the dependent claims, the description and in the figures.

• Montieren des Türantriebs nach einem der Ansprüche 1 bis 13 an einer Tür
• Bedienen eines der Angriffe, insbesondere mittels eines Werkzeugs.

The previously derived and indicated object is further achieved by the method described above for adjusting the regulation of a fluid flow within a door drive, in that the method comprises the following steps:

• Mounting the door drive according to one of claims 1 to 13 on a door
• Operating one of the attacks, in particular by means of a tool.

Advantageous developments of the invention are specified in the dependent claims, the description and in the figures.

Features and details which are described in connection with the door drive according to the invention, also apply in connection with the inventive method and vice versa. In the description and in the claims mentioned features each individually to be inventive or in combination. In particular, a method that can be carried out with a door drive according to one of claims 1 to 13, and a door drive with which a method according to any one of claims 14 to 15 can be performed, provided under protection.

• Fig. 1 zeigt schematisch einen erfindungsgemäßen Türantrieb gemäß einer Ausgestaltung der Erfindung,
• Fig. 2 ein Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer Ausgestaltung der Erfindung,
• Fig. 3 ein Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer weiteren Ausgestaltung der Erfindung,
• Fig. 4 zeigt den ersten Ventilkolben eines Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer besonders bevorzugten Ausgestaltung der Erfindung,
• Fig. 5 zeigt in einer Schnittdarstellung den ersten Ventilkolben eines Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer besonders bevorzugten Ausgestaltung der Erfindung,
• Fig. 6 zeigt den zweiten Ventilkolben eines Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer besonders bevorzugten Ausgestaltung der Erfindung und
• Fig. 7 ein Regulierventil eines erfindungsgemäßen Türantriebs gemäß einer besonders bevorzugten Ausgestaltung der Erfindung.

The invention will be explained in more detail with reference to embodiments. Technical features with the same function are provided in the figures with identical reference numerals. Show it:

• Fig. 1 shows schematically a door drive according to the invention according to an embodiment of the invention,
• Fig. 2 a regulating valve of a door drive according to the invention according to an embodiment of the invention,
• Fig. 3 a regulating valve of a door drive according to the invention according to a further embodiment of the invention,
• Fig. 4 shows the first valve piston of a regulating valve of a door drive according to the invention according to a particularly preferred embodiment of the invention,
• Fig. 5 shows a sectional view of the first valve piston of a regulating valve of a door drive according to the invention according to a particularly preferred embodiment of the invention,
• Fig. 6 shows the second valve piston of a regulating valve of a door drive according to the invention according to a particularly preferred embodiment of the invention and
• Fig. 7 a regulating valve of a door drive according to the invention according to a particularly preferred embodiment of the invention.

In Fig. 1 a door drive 1 with a housing 2 is shown. The door drive 1 has a regulating valve 3 for the adjustable regulation of a fluid flow within the door drive 1. The regulating valve 3 extends through the housing 2 of the door drive 1 in such a way that the attacks 4 for adjusting the regulating valve 3 can be operated from outside the housing 2. The attacks 4 of the regulating valve 3 are located on opposite sides of the housing 2, so that in Fig. 1 only one attack 4 is visible. Via an output shaft 13 of the door drive 1 in a known manner with a power transmission element, such as a scissors linkage or a slide, connectable.

This in Fig. 2 shown regulating valve 3 has two ends, each with an attack 4a, 4b. The regulating valve 3 is mounted in a valve sleeve 6. The valve sleeve 6 has not shown lateral openings for the passage of a fluid flow. About the valve sleeve 6, the regulating valve 3 is received in the door drive 1 frictionally and / or positively and / or cohesively. The regulating valve 3 has a first valve piston 9a and a second valve piston 9b, wherein the first valve piston 9a has the first attack 4a and the second valve piston 9b has the second attack 4b. The first valve piston 9a is movable relative to the second valve piston 9b. The first valve piston 9a is rotatably mounted in a thread 16a. The second valve piston 9b is rotatably mounted in a thread 16b. The first valve piston 9 a has a receiving space 10. The second valve piston 9b has a regulating pin 11, wherein the regulating pin 11 protrudes into the receiving space 10. The regulating pin 11 has a frusto-conical tip 12, wherein the frusto-conical tip 12 together with the receiving space 10 a Annular gap valve forms. By actuating one of the attacks 4a, 4b, the distance between the two valve pistons 9a, 9b is adjustable. Due to the annular gap formed between the receiving space 10 and the frusto-conical tip 12, depending on the distance between the two valve pistons 9a, 9b, hydraulic fluid can flow from one another or into the receiving space 10. For this purpose, the receiving space 10 has a passage 17 which has a fluid connection with one of the lateral openings of the valve sleeve 6. Similarly, the space around the base of the frusto-conical tip 12 is in fluid communication with one of the other side openings of the valve sleeve. The fluid connections are limited by annular sealing elements 14.

This in Fig. 3 illustrated regulating valve 3 is constructed identically in many parts, as in Fig. 2 illustrated regulating valve 3, so that the description of Fig. 2 essentially on the Fig. 3 is transferable. In contrast to the regulating valve 3 of the Fig. 2 has the regulating pin 11 of the regulating valve 3 of the Fig. 3 no frustoconical tip on. The regulating pin 11 has a bore 19 extending in the axial direction. The bore 19 extends from the first valve piston 9a facing side of the regulating pin 11 in the second valve piston 9b. The bore 19 is thus in direct communication with the receiving space 10. At the end of the bore 19, a transverse channel 20 is arranged, which establishes a fluid connection between the bore 19 and a second lateral opening 18 b of the valve sleeve 6. Between the regulating pin 11 and the receiving space 10, a diaphragm sleeve 7 is arranged. The diaphragm sleeve 7 has an axially extending notch 21. The regulating pin 11 projects partially into the diaphragm sleeve 7. The regulating pin 11 is fluid-tight against the inner wall of the diaphragm sleeve 7. The regulating pin 11 does not cover the notch 21 depending on the distance between the two valve pistons 9a, 9b relative to each other, partially or completely. Thus, the regulating pin 11 together with the diaphragm sleeve 7 forms an orifice valve, via which a fluid flow can be regulated. One possible way of a fluid through the regulating valve 3 is represented by the dotted line. In this case, the fluid flows via the first lateral opening 18a, the passage 17 and the notch 21 past the regulating pin 11 into the receiving space 10. From the receiving space 10, the fluid flows through the bore 19 and the transverse channel 20 to the second lateral opening 18b. The reverse flow path is also possible.

Fig. 4 shows the first valve piston 9a of in Fig. 7 illustrated regulating valve 3. The first valve piston 9a has a first attack 4a. The first valve piston 9 a has a receiving space 10. The attack 4a and the receiving space 10 are arranged at opposite ends of the first valve piston 9a. The first valve piston 9a has a first thread 16a. By means of the first thread 16a, the first valve piston 9a can be movably mounted in a door drive. The first valve piston 9a has two passages 17. Through the passages 17 can flow to be regulated fluid flow. The first valve piston 9a has a driving contour 22. The driving contour 22 is arranged in the front region of the receiving space 10. The entrainment contour 22 is formed by the non-circular inner contour of the receiving space 10.

Fig. 5 shows the in Fig. 4 already shown first valve piston 9a of in Fig. 7 illustrated regulating valve 3 in a sectional view. The receiving space 10 has a guide area 23. The guide area 23 is arranged in the rear area of the receiving space. The guide region 23 is formed by a round inner contour with a constant radius of the receiving space 10.

Fig. 6 shows the second valve piston 9b of in Fig. 7 The second valve piston 9b has a second attack 4b. The second valve piston 9b has a regulating pin 11. The attack 4b and the regulating pin 11 are arranged at opposite ends of the second valve piston 9b. The second valve piston 9b has a tip 12. The tip 12 is formed substantially frusto-conical. The tip 12 is arranged on the regulating pin 11. The second valve piston 9b has a guide element 24. The guide member 24 is disposed on the regulating pin 11. The guide element 24 is arranged on the second attack 4b opposite end of the second valve piston 9b. The guide member 24 is formed by a cylindrical portion of the regulating pin 11. The second valve piston 9b has an engagement element 25. The engagement member 25 is disposed on the regulating pin 11. The engagement element 25 is formed by a non-circular outer contour of the regulating pin 11.

Fig. 7 shows a control valve according to the invention 3. The regulating valve 3 has a first valve piston 9a and a second valve piston 9b. The second valve piston 9b extends with the tip, not shown, into the first valve piston 9a. The first valve piston 9a corresponds to those in the FIGS. 4 and 5 shown first valve piston 9a. The second valve piston 9b corresponds to the in Fig. 6 shown second valve piston 9b. To improve the clarity is in the FIGS. 4 to 7 has been dispensed with the representation of sealing elements. The guide element 24, not shown, is guided in the guide region 25, also not shown. By this guide the game of the annular gap valve formed by the top 12 and the receiving space 10 is reduced. Thus, the regulating valve 3 can be set more accurately. The engagement element 25 engages in the driving contour 22, not shown. The engagement member 25 and the driving contour 22 white corresponding contours. As a result, rotational movements between the valve piston 9a, 9b are transmitted, ie, the valve piston 9a, 9b are rotatably coupled. The valve pistons 9a, 9b are movable in the longitudinal direction relative to one another, ie the valve pistons 9a, 9b are decoupled translationally. The first valve piston 9a is mounted on the first thread 16a in the door drive, not shown. The second valve piston 9b is rotatably mounted in the door drive exclusively about its longitudinal axis. By operating one of the attacks 4a, 4b, both valve pistons are rotated in the door drive. In this case, the valve pistons 9a, 9b move either toward or away from each other depending on the direction of rotation. By this translational relative movement formed by the tip 12 and the receiving space 10 annular gap valve is adjusted.

LIST OF REFERENCE NUMBERS

1

door drive

2

casing

3

regulating

4

attack

4a

first attack

4b

second attack

5

camp

6

valve sleeve

7

aperture sleeve

8th

Through Hole

9a

first valve piston

9b

second valve piston

10

accommodation space

11

regulating pin

12

top

13

output shaft

14

sealing element

15

takeaway

16a

first thread

16b

second thread

17

passage

18a

first lateral opening

18b

second lateral opening

19

drilling

20

Querkanal

21

score

22

driving contour

23

guide region

24

guide element

25

engaging member

Claims (15)

Door drive (1) having a housing (2) and at least one regulating valve (3) for adjustably regulating a fluid flow within the door drive (1), characterized in that the one regulating valve (3) or at least one of the several regulating valves (3) has two ends each having an attack (4), in particular for a tool, wherein the one regulating valve (3) or the regulating valves (3) extend through the housing (2) such that the attacks (4) for adjusting the one regulating valve ( 3) or the regulating valves (3) from outside the housing (2) are operable. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or the plurality of regulating valves (3) are arranged such that in each mounting position of the door drive (1) at least one attack (4) per regulating valve for a Operator is accessible. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or at least one of the plurality of regulating valves (3) extends in a bearing (5) or thread. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or at least one of the plurality of regulating valves (3) is mounted in a valve sleeve (6), wherein the valve sleeve (6) in the door drive (1). , in particular in a through hole (8) is received. Door drive (1) according to one of the preceding claims, characterized in that the one valve sleeve (6) or at least one of the plurality of valve sleeves (6) is positively and / or positively and / or materially received in the door drive (1). Door drive (1) according to one of the preceding claims, characterized in that the one valve sleeve (6) or at least one of the plurality of valve sleeves (6) has at least one lateral opening for the passage of a fluid flow. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or at least one of the plurality of regulating valves (3) is associated with a diaphragm, wherein the regulating valve (3) cooperates with the associated aperture such that the degree of coverage the aperture depends on the position of the regulating valve (3) relative to the position of the shutter. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or at least one of the plurality of regulating valves (3) has a first valve piston (9a) and a second valve piston (9b), wherein the first valve piston (9a ) has the first attack (4a) and the second valve piston (9b) the second attack (4b), wherein the first valve piston (9a) and the second valve piston (9b) relative to each other and / or relative to the door drive (1) are movable , Door drive (1) according to one of the preceding claims, characterized in that the first valve piston (9a) or the second valve piston (9b) or at least one of the plurality of first valve piston (9a) or second valve piston (9b) a Has right-hand thread and the associated other valve piston has a left-hand thread, wherein the valve piston (9a, 9b) are guided in corresponding right-hand or left-hand threads. Door drive (1) according to one of the preceding claims, characterized in that a first valve piston (9a) or at least one of the plurality of first valve piston (9a) an axially aligned receiving space (10) and the associated second valve piston (9b) a regulating pin (11 ), wherein the regulating pin (11) projects at least partially into the receiving space (10). Door drive (1) according to one of the preceding claims, characterized in that the one regulating pin (11) or at least one of the plurality of regulating pins (11) has a particular conical or frusto-conical tip (12), the tip (12) together with the associated Receiving space (10) forms an annular gap valve. Door drive (1) according to one of the preceding claims, characterized in that between the one regulating pin (11) or at least one of the plurality of regulating pins (11) and the associated receiving space (10), a diaphragm is arranged, wherein the degree of coverage of the aperture depends on the position of the first valve piston (9a) and / or the second valve piston (9b) relative to the position of the diaphragm. Door drive (1) according to one of the preceding claims, characterized in that the one regulating valve (3) or at least one of the plurality of regulating valves (3) extends substantially perpendicular to the longitudinal axis of the door drive (1). Method for producing a door drive (1), characterized in that the method comprises the following steps: - Providing a door drive (1) with a housing (2) for receiving at least one regulating valve (3) for adjustably regulating a fluid flow within the door drive (1), Producing at least one regulating valve (3), wherein the one regulating valve (3) or the several regulating valves (3) have at least two ends each with an attack (4), in particular for a tool, Inserting the one regulating valve (3) or the plurality of regulating valves (3) into the housing (2) so that the one regulating valve (3) or the plurality of regulating valves (3) extend through the housing (2) such that the attacks (4) for adjusting the one regulating valve (3) or the plurality of regulating valves (3) from outside the housing (2) are operable. Method for adjusting the regulation of a fluid flow within a door drive (1), characterized in that the method comprises the following steps: - Mounting the door drive (1) according to one of claims 1 to 13 on a door - Operating one of the attacks (4), in particular by means of a tool.

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