CN110630133A

CN110630133A - Drive device for a door or window leaf

Info

Publication number: CN110630133A
Application number: CN201910546123.8A
Authority: CN
Inventors: B·韦尔纳
Original assignee: Geze GmbH
Current assignee: Geze GmbH
Priority date: 2018-06-25
Filing date: 2019-06-24
Publication date: 2019-12-31
Anticipated expiration: 2039-06-24
Also published as: GB201908660D0; DE102018210290A1; CN110630133B; DE102018210290B4; GB2576601A

Abstract

The invention relates to a drive device for a wing of a door or window, comprising a housing and a piston-cylinder unit, the piston of which is mounted in a cylinder of the piston-cylinder unit such that it can be displaced by a piston, forming a pressure chamber and a pressure-free chamber, between which a hydraulic medium can be displaced during a corresponding closing and opening movement of the piston. The housing is provided with inflow and/or outflow openings for the hydraulic medium to be transferred, which are successively moved past and closed or released during a corresponding closing or opening movement of the piston-cylinder unit. Furthermore, a control valve is provided, which is provided with at least one opening for the overflowing hydraulic medium and which interacts with an inflow and/or outflow opening provided in the housing, so that, for overflowing hydraulic medium via the opening of the control valve, different inflow and/or outflow openings of the housing can be released depending on the respective adjustment of the control valve.

Description

Drive device for a door or window leaf

Technical Field

The invention relates to a drive device for a wing of a door, window or the like, having a housing and a piston-cylinder unit, the piston of which, which is acted upon by a spring unit and interacts with a driven shaft, being mounted displaceably in the cylinder of the piston-cylinder unit while forming a pressure chamber and a pressure-free chamber, between which a hydraulic medium can be transferred during the respective closing and opening movement of the piston.

Background

Hydraulic drives for doors or windows are well known and bring about an autonomous closing of the door leaf or sash, wherein in the case of a drive or door closer for the door leaf it is ensured not only that the door leaf is moved into the door frame but also that the bolt of the door lock falls into the locking plate. Furthermore, a mechanical energy store, such as in particular a spring unit, is provided in the housing filled with hydraulic medium, which spring unit is pressed by the displacement piston during the rotary movement of the output shaft when the wing is opened manually or automatically, for example as a result of a hydraulic pump, and serves as an energy store for the automatic closing of the wing. The inner chamber of the housing is divided into a plurality of chambers by the piston. Between these chambers, a hydraulic channel is provided, which has an associated control valve for influencing the overflow of the hydraulic medium, which control valve is used to control the drive characteristic. In particular, a closing delay, an opening buffer, an end stop (Endschlag) and/or the like can be provided.

The disadvantages of the drive devices known to date, such as in particular door closers of the type mentioned initially, are in particular: the activation regions for certain hydraulic functions, such as closing delay, opening damping, end stop and/or the like, are structurally fixedly predefined. However, due to the different installation conditions, the fastening areas are now frequently not matched. For example, in the previously customary drive devices for door leaves, the opening damping is therefore started at a door opening angle of 60 °, in order to stop the door before the door opening angle is 90 °. However, if the door can be opened, for example, over a door opening angle of 180 °, the opening damping starts too early in the known drive, thereby making the operation of the door difficult.

Disclosure of Invention

The invention aims to: a drive device of the type mentioned at the outset is provided in which the abovementioned disadvantages of the prior art are obviated. In this case, it should be possible to implement in particular: the starting point (Einsatzpunkt) of the hydraulic function, such as in particular the damping region and/or the end stop for closing delay, opening damping and/or similar functions, is variably adjustable for improved operating comfort.

According to the invention, this object is achieved by a drive device having the features of claim 1. Preferred embodiments of the drive device according to the invention result from the dependent claims, the description and the drawings.

The wing for doors, windows or the like according to the invention comprises a housing and a piston-cylinder unit, the piston of which, which is loaded by a spring unit and interacts with a driven shaft, is mounted displaceably in the cylinder of the piston-cylinder unit while forming a pressure chamber and a pressure-free chamber, between which pressure chamber and pressure-free chamber hydraulic medium can be transferred during the respective closing and opening movement of the piston. The housing is provided with inflow and/or outflow openings for the hydraulic medium to be transferred, which are successively moved past and closed or released during a corresponding closing or opening movement of the piston-cylinder unit. Furthermore, a control valve is provided, which is provided with at least one opening for the overflowing hydraulic medium and interacts with an inflow and/or outflow opening provided in the housing in such a way that, in order to be able to overflow the hydraulic medium via the opening of the control valve, different inflow and/or outflow openings of the housing are released depending on the respective adjustment of the control valve.

Due to the configuration according to the invention of the drive, the starting point of the hydraulic function, such as in particular the damping region and/or the end stop for closing delay, opening damping and/or similar functions, can be variably adjusted in a simple manner, so that an increased operating comfort of the door is achieved in the drive for the door leaf. Furthermore, the variable adjustability of the hydraulic function can be realized relatively simply in terms of construction. If the piston of the piston-cylinder unit moves in the cylinder, the hydraulic medium is displaced. In this case, the hydraulic medium flows through the inlet and/or outlet openings of the housing, which are released by the piston and the control valve. A throttle or the like can be arranged upstream or downstream of the regulating valve in the flow direction of the hydraulic medium, via which throttle the characteristics of the drive can be correspondingly controlled. If the piston of the piston-cylinder unit moves past the inflow and/or outflow bore regulated by the regulating valve, the inflow or outflow of the associated throttle valve is interrupted.

Depending on the adjustment of the adjusting valve, different inflow and/or outflow openings in the housing are released. The piston of the piston-cylinder unit then requires more or less strokes until it closes the released inflow and/or outflow opening. In the case of a drive for a door leaf, the released inflow and/or outflow openings are released in correspondingly larger or smaller door opening angles. Thereby, the starting point of the hydraulic function can be adjusted arbitrarily or variably.

Preferably, only one of the inflow and/or outflow openings of the housing can be released via the regulating valve. In other words, the different inflow and/or outflow openings can each be released only individually, while the respective other inflow and/or outflow openings are kept closed by the control valve.

Preferably, a hydraulic function, such as in particular a closing delay, an opening buffer, an end stop or the like, can be triggered by the release of the respective inflow and/or outflow opening of the housing by the control valve and the piston of the piston-cylinder unit.

For hydraulic functions such as, in particular, closing delay or opening damping, at least one throttle is preferably provided upstream and/or downstream of the regulating valve, respectively, as viewed in the flow direction of the hydraulic medium. In this case, the respective hydraulic function can be influenced correspondingly, in particular via a throttle.

According to a preferred practical embodiment of the drive device according to the invention, the regulating valve comprises a valve section which is adjustable in the valve bore in the housing by rotation about its axis which is coaxial with the axis of the valve bore of the regulating valve, the valve section having a valve head which is provided with at least one opening and which forms an interference fit with respect to the housing, so that only one of the inlet and/or outlet bores of the housing can be released respectively by the regulating valve in order to overflow the hydraulic medium via the opening of the regulating valve, while the interference fit seals the regulating valve with respect to the housing.

Thereby, the hydraulic medium can only flow in or out at the respective released inflow and/or outflow openings.

The valve bore of the control valve is advantageously arranged in a region on the outside of the piston-cylinder unit and is oriented at least substantially tangentially and transversely in particular with respect to the cylinder of the piston-cylinder unit, and the valve section of the control valve is adjustable by rotation about its axis coaxial with the axis of the valve bore of the control valve.

In this case, according to a preferred practical embodiment of the drive device according to the invention, the valve head of the valve section of the control valve is provided with a plurality of openings which are distributed over its circumference in such a way that, in order to overflow the hydraulic medium via the openings of the control valve, one of the inflow and/or outflow openings of the housing can always be released or is released in accordance with a rotational adjustment of the valve section of the control valve.

As a result, depending on the travel displacement of the piston-cylinder arrangement, the respective inlet and/or outlet opening of the housing, selected by the control valve, can be released or closed for the purpose of overflow of the hydraulic medium.

The valve head of the valve section of the regulating valve is preferably made of an elastic plastic. Thus, an optimal interference fit of the valve head of the regulating valve with respect to the housing is ensured.

As already explained, the valve head of the regulating valve can be provided with one or also with a plurality of openings. The respective opening can be embodied in the form of a slot or the like, for example, as a bore, and can be arranged in accordance with the inflow and/or outflow bore of the housing. That is, the respective opening of the valve head of the valve section of the regulating valve can be aligned with one or more, in particular each of said different inflow and/or outflow apertures of the housing by corresponding adjustment or rotation of the valve section, wherein said opening is aligned with only one of said inflow and/or outflow apertures, respectively. The inflow and/or outflow opening of the housing can in particular have an at least substantially circular cross section.

According to an advantageous practical embodiment of the drive device according to the invention, the inflow and/or outflow openings of the housing, in particular having an at least substantially circular cross section, are arranged in a row extending parallel to the axis of the cylinder of the piston-cylinder unit or parallel to the direction of movement of the piston-cylinder unit.

According to an alternative advantageous practical embodiment of the drive according to the invention, the inflow and/or outflow bores of the housing, which in particular each have an at least substantially circular cross section, may however also be offset relative to one another both along the axis of the cylinder of the piston-cylinder unit and along its circumference.

Preferably, the valve head of the valve section of the regulating valve is provided with at least one at least substantially circular and/or at least one slit-like opening.

In this case, the respective slit-shaped openings can extend in particular in the circumferential direction of the valve head of the valve section of the control valve or parallel or inclined to the axis of the valve bore of the control valve, or have a spiral or similar course.

According to an advantageous practical embodiment of the drive device according to the invention, the valve head of the valve section of the control valve is provided with at least one slit-like opening, which extends in particular obliquely with respect to the axis of the valve bore of the control valve, said opening interacting with inlet and/or outlet openings of the housing, which are offset with respect to one another both along the axis of the cylinder of the piston-cylinder unit and along its circumference, in particular each have an at least substantially circular cross section.

According to an alternative advantageous practical embodiment of the drive device according to the invention, the valve head of the valve section of the control valve is provided with slit-like openings which extend in each case in the circumferential direction of the valve head and are offset relative to one another both along the axis of the valve bore or the valve section of the control valve and in the circumferential direction of the valve head, which openings interact with inlet and/or outlet openings of the housing which are offset relative to one another both along the axis of the cylinder of the piston-cylinder unit and in the circumferential direction thereof, in particular each have an at least substantially circular cross section.

According to a further advantageous practical embodiment of the drive device according to the invention, the valve head of the valve section of the control valve is provided with an opening, in particular with an at least substantially circular cross section, or with a plurality of openings, in particular with an at least substantially circular cross section, which are arranged in a plane perpendicular to the axis of the valve bore or the valve section of the control valve, distributed over the circumference of the valve head, in particular each with an at least substantially circular cross section, said openings cooperating with inflow and/or outflow holes, in particular each with an at least substantially circular cross section, of the housing, said inflow and/or outflow holes being arranged one after the other in a row parallel to the axis of the cylinder of the piston-cylinder unit.

The housing and the control valve are expediently provided with markings, by means of which the control valve can be positioned correspondingly precisely in the different control parts.

The valve section of the control valve can be provided with a tool receptacle for adjustment or rotation.

With the drive according to the invention, the starting point of the hydraulic function, such as in particular the damping region and/or the end stop for closing delay, opening damping and/or the like, can be variably adjusted in a simple and reliable manner, as a result of which an increased operating comfort is achieved in the case of a drive for a door leaf.

Drawings

The invention is explained in detail below by means of embodiments with reference to the drawings; in the drawings:

fig. 1 shows a schematic cross-sectional view of an exemplary embodiment of a drive device according to the invention, corresponding to a sectional view through a piston-cylinder arrangement in a transverse direction, wherein the valve head of the valve section is provided with three openings arranged in a plane perpendicular to the axis of the valve bore or valve section of the control valve, distributed over the circumference of the valve head, each circular in cross-section, which cooperate with an inflow and/or outflow bore of the housing, each circular in cross-section, which inflow and/or outflow bores are arranged one after the other in a row extending parallel to the axis of the cylinder of the piston-cylinder unit;

fig. 2 shows a schematic longitudinal section through a part of the drive device according to fig. 1 with a regulating valve, wherein the piston of the piston-cylinder unit is positioned outside the region of the inflow and/or outflow opening of the housing, so that hydraulic medium can flow in or out via the inflow and/or outflow opening released by the regulating valve;

fig. 3 shows a schematic longitudinal section through the part of the drive according to fig. 1 with the control valve, wherein the piston of the piston-cylinder unit however closes a part of the inflow and/or outflow bore, including the inflow and/or outflow bore selected by the control valve;

fig. 4 shows a partially schematic illustration of a control valve of the drive according to fig. 1;

fig. 5 shows a partial schematic view of another exemplary embodiment of a drive device according to the invention;

fig. 6 shows a partial schematic view of another exemplary embodiment of a drive device according to the invention; and is

Fig. 7 shows a schematic view of an exemplary embodiment of the drive according to the invention, wherein the housing and the regulating valve are provided with markings.

Detailed Description

Fig. 1 to 7 show exemplary different embodiments of a drive device for a wing of a door, window or the like according to the invention. The drive device 10 comprises a housing 12 and a piston-cylinder unit 14 (see in particular fig. 1 to 3), respectively, the piston 18 of which, which is acted upon by a spring unit 16 and interacts with a driven shaft, is mounted displaceably in a cylinder 20 of the piston-cylinder unit 14, forming a pressure chamber and a pressure-free chamber between which a hydraulic medium 22 can be displaced during the respective closing and opening movement of the piston 18.

Furthermore, in the respective drive device 10, the housing 12 is provided with inflow and/or outflow openings 24 for the hydraulic medium 22 to be transferred, which during the respective closing or opening movement of the piston 18 of the piston-cylinder unit 14 are successively passed through and closed or released, and with a control valve 28, which is provided with at least one opening 26 for the hydraulic medium 22 and interacts with the inflow and/or outflow openings 24 provided in the housing 12 in such a way that, depending on the respective adjustment of the control valve, different inflow and/or outflow openings 24 of the housing 12 can be released for the overflow of the hydraulic medium 22 via the opening 26 of the control valve 28.

In various embodiments, only one of the inlet and/or outlet openings 24 of the housing 12 can be released via the control valve 28 (see in particular fig. 2).

By means of the release of the respective inlet and/or outlet opening 24 of the housing 12 by means of the control valve 28 and the piston 18 of the piston-cylinder unit 16, hydraulic functions such as, in particular, closing delay, opening damping, end stop or the like can be triggered.

If the piston 18 moves relative to the housing, the hydraulic medium is displaced. The displaced hydraulic medium flows through the inlet and/or outlet openings 24 which are released by the respective openings 26 of the regulating valve 28 of the housing, as long as the relevant inlet and/or outlet openings 24 are also released by the piston 18 of the piston-cylinder unit 14 (see fig. 2). Conversely, if the piston 18 of the piston-cylinder unit 14 assumes a position in which it covers the respective inflow and/or outflow opening 24 of the housing 12 (see fig. 3) which is actuated via the regulating valve 28, the respective inflow and/or outflow opening 24 is closed. The inlet and/or outlet opening is released only when both the opening 26 of the control valve 28 is aligned with the inlet and/or outlet opening 24 and the piston 18 is moved out of the region of the inlet and/or outlet opening (see again fig. 2). The hydraulic medium can then only flow in or out via the inflow and/or outflow openings 24.

Depending on the adjustment of the adjusting valve 28, different inflow and/or outflow openings 24 of the housing 12 are actuated or released. The piston 18 of the piston-cylinder unit 14 then requires more or less strokes. In the case of the drive 10 for a door leaf, the inflow and/or outflow openings actuated or released by the control valve 28 are correspondingly closed by the piston 18 in a more or less large door opening angle. The starting point of the associated hydraulic function can thus be adjusted arbitrarily variably via the regulating valve 28.

For hydraulic functions such as, in particular, closing delay or opening damping, at least one throttle valve may be provided upstream and/or downstream of the control valve 28, respectively, as viewed in the flow direction of the hydraulic medium.

As can be seen in particular also from fig. 1 to 3, in a different embodiment of the drive device 10 according to the invention, the regulating valve 28 comprises a valve section 32 which is adjustable in the valve bore 30 of the housing 12 by rotation about its axis which is coaxial to the axis of the valve bore 30 of the regulating valve 28, said valve section having a valve head 34 which is provided with at least one opening 26 and which forms an interference fit with respect to the housing 12, so that only one inflow and/or outflow opening of the inflow and/or outflow opening 24, respectively, of the housing can be released by the regulating valve 28 in order to overflow the hydraulic medium 22 via the opening 26 of the regulating valve 28.

In this case, the valve bore 30 of the control valve 28 can be arranged in each case in a region on the outside of the piston-cylinder unit 14 and in particular can be oriented at least substantially tangentially and transversely with respect to the cylinder 20 of the piston-cylinder unit 14, and the valve section 32 of the control valve 28 can be adjusted by rotating about its axis coaxial with the axis of the valve bore 30 of the control valve 28 (see in particular fig. 1 to 3 again).

As can be seen from fig. 1, when the inlet and/or outlet opening 24 of the housing 12 is released by the control valve 28 and the piston 18 of the piston-cylinder unit 14, respectively, the hydraulic medium 22 can flow in or out via the control valve 28 and an opening 36 provided in the housing.

The valve head 34 of the valve section 32 of the control valve 28 can be provided with only one or also with a plurality of openings 26 (see fig. 1 to 6) which are distributed over its circumference in such a way that, in order to allow the overflow of hydraulic medium 22 via the openings 26 of the control valve 28 as a function of the rotational adjustment of the valve section 32 of the control valve 28, only one of the inflow and/or outflow openings 24 of the housing 12 can always be released or one of the inflow and/or outflow openings of the housing can be released in the piston 18 which leads out from the region of the relevant inflow and/or outflow opening 24.

The valve head 34 of the valve section 32 of the control valve 28 can in each case be made of an elastic plastic. Thus, a particular interference fit of the valve head 34 of the valve section 32 of the regulating valve 28 relative to the housing 12 is ensured, thereby producing a good seal.

In the exemplary embodiment of the drive device according to the invention shown in fig. 1 to 4, the inflow and/or outflow bores 24 of the housing 12, each having an at least substantially circular cross section, are arranged in a row extending parallel to the axis of the cylinder 20 of the piston-cylinder unit 14 or parallel to the direction of movement of the piston 18 of said piston-cylinder unit.

In contrast, in the two exemplary embodiments of the drive device 10 according to the invention, which are illustrated in fig. 5 and 6, the inlet and/or outlet openings 24 of the housing 12, which in particular each have an at least substantially circular cross section, are offset relative to one another both along the axis of the cylinder 20 of the piston-cylinder unit 14 and in the circumferential direction thereof.

The valve head 34 of the valve section 22 of the regulating valve 28 according to a corresponding embodiment of the drive device 10 according to the invention can in particular be provided with one or more substantially circular openings 26 (see fig. 1 to 4) or one or more slit-shaped openings (see fig. 5 and 6).

The respective slit-shaped openings 26 can extend, for example, in the circumferential direction of the valve head 34 of the valve section 32 of the control valve 28 or parallel or obliquely with respect to the axis of the valve bore of the control valve 28 or have a spiral or similar shape.

In the exemplary embodiment of the drive device according to the invention, which is illustrated in fig. 5, the valve head 34 of the valve section 32 of the control valve 28 is provided with at least one slit-like opening 26, which extends in particular obliquely with respect to the axis of the valve bore 30 of the control valve 38, and which interacts with the inflow and/or outflow bores 24 of the housing 12, which are offset relative to one another both along the axis of the cylinder 20 of the piston-cylinder unit 14 and in the circumferential direction, in particular each have an at least substantially circular cross section.

In contrast, in the exemplary embodiment of the drive device 10 according to the invention, which is shown in fig. 6, the valve head 34 of the valve section 32 of the control valve 28 is provided with slit-like openings 26, which extend in each case in the circumferential direction of the valve head 34 and are offset relative to one another both along the axis of the valve bore 30 or the valve section 32 of the control valve 28 and in the circumferential direction of the valve head 34, which openings interact with the inlet and/or outlet openings 24 of the housing 12 which are offset relative to one another both along the axis of the cylinder 20 of the piston-cylinder unit 14 and in the circumferential direction thereof, in particular each have an at least substantially circular cross section.

The offset arrangement of the slit-shaped openings 26 of the valve head 34, which extend in the circumferential direction of the valve head 34, and of the inlet and/or outlet openings 24 of the housing 12, respectively, can correspondingly increase the rotational displacement of the actuating element 28, and thus the adjustability, the offset arrangement of the inlet and/or outlet openings 24 of the housing 12 can achieve a relatively small change (abstufang, step) in the starting point of the respective hydraulic function, since the diameters can coincide (ü berschneiden).

In contrast, in the exemplary embodiment of the drive device 10 according to the invention, which is illustrated in fig. 1 to 4, the valve head 34 of the valve section 32 of the control valve 28 is provided with three openings 26, which are arranged in a plane perpendicular to the axis of the valve bore 30 or the valve section 32 of the control valve 28, are distributed over the circumference of the valve head 34, in particular each have an at least substantially circular cross section, and interact with the inlet and/or outlet bores 24, in particular each have an at least substantially circular cross section, of the housing 12, which are arranged one after the other in a row extending parallel to the axis of the cylinder 20 of the piston-cylinder unit 14. As can be seen from fig. 2 and 3, the valve head 34 of the valve section 32 of the control valve 38 has in the present case three openings 26 which are offset by 120 ° relative to one another, so that, depending on the respective adjustment of the valve section 32 of the control valve 28, only one opening 26 is aligned with one inflow and/or outflow opening 24 of the housing 12. In the present case, the hole diameter specifies the change in the starting point of the respective hydraulic function due to the inflow and/or outflow holes 24 arranged in succession in a row extending parallel to the axis of the cylinder 20 of the piston-cylinder unit 14.

As can be seen from fig. 7, the housing 12 and the regulating valve 28 of the respective exemplary embodiment of the drive according to the invention can be provided with markings 38, 40, via which the regulating valve 28 can be positioned respectively exactly in the different regulating parts. Furthermore, the valve section 32 of the control valve 28 can be provided with a tool receptacle 42 for adjusting or rotating the valve section 32. If this tool holder is, for example, slot-shaped as in the case shown, it can also be provided with a marking 40.

List of reference numerals

10 drive device

12 casing

14 piston-cylinder unit

16 spring unit

18 piston

20 jar

22 hydraulic medium

24 inflow and/or outflow holes

26 opening

28 regulating valve

30 valve hole

32 valve section

34 valve head

36 holes

38 mark

40 mark

42 tool receiving portion

Claims

1. Drive device (10) for a wing of a door, window or the like, comprising a housing (12) and a piston-cylinder unit (14), the piston (18) of which, loaded by a spring unit (16) and interacting with a driven shaft, is movably mounted in a cylinder (20) of the piston-cylinder unit (14) forming a pressure chamber and a pressure-free chamber, between which a hydraulic medium (22) can be transferred during a respective closing and opening movement of the piston (18), wherein the housing (12) is provided with an inflow and/or outflow opening (24) for the hydraulic medium (22) to be transferred, which inflow and/or outflow opening is driven through and closed or released successively during a respective closing or opening movement of the piston (18) of the piston-cylinder unit (14), and a control valve (28) is provided, which is provided with at least one opening (26) for the overflowing hydraulic medium (22) and interacts with an inflow and/or outflow opening (24) provided in the housing (12) such that, in order to overflow the hydraulic medium (22) via the opening (26) of the control valve (28), different inflow and/or outflow openings (24) of the housing (12) can be released depending on the respective adjustment of the control valve.

2. The drive device as claimed in claim 1, characterized in that only one of the inflow and/or outflow openings (24) of the housing (12) can be released via the regulating valve (28).

3. The drive according to claim 1 or 2, characterized in that a hydraulic function, such as in particular a closing delay, an opening buffer, an end stop or the like, can be triggered by the release of a corresponding inflow and/or outflow opening (24) of the housing (12) by the regulating valve (28) and the piston (18) of the piston-cylinder unit (16).

4. Drive arrangement according to at least one of the preceding claims, characterized in that at least one throttle is provided upstream and/or downstream of the regulating valve (28), respectively, as seen in the flow direction of the hydraulic medium, for hydraulic functions such as in particular closing delay or opening damping.

5. Drive device according to at least one of the preceding claims, characterized in that the regulating valve (28) comprises a valve section (32) which is adjustable in a valve bore (30) in the housing (12) by rotation about its axis which is coaxial with the axis of the valve bore (30) of the regulating valve (28), which has a valve head (34) which is provided with at least one opening (26) and which forms an interference fit with respect to the housing (12) such that, in order to overflow the hydraulic medium (22) via the opening (26) of the regulating valve (28), only one inflow and/or outflow bore of the inflow and/or outflow bore (24) of the housing (12) can be released, respectively, by the regulating valve (28).

6. Drive device according to claim 5, characterized in that the valve bore (30) of the regulating valve (28) is oriented at least substantially tangentially and transversely with respect to the cylinder (20) of the piston-cylinder unit (14) in a region on the outside of the piston-cylinder unit (14), and in that the valve section (32) of the regulating valve (28) is adjustable by rotation about its axis coaxial with the axis of the valve bore (30) of the regulating valve (28).

7. The drive device as claimed in claim 6, characterized in that the valve head (34) of the valve section (32) is provided with a plurality of openings (26) which are distributed over its circumference in such a way that, for the purpose of overflowing the hydraulic medium (22) via the openings (26) of the regulating valve (28), depending on the rotational adjustment of the valve section (32) of the regulating valve (28), one of the inflow and/or outflow openings (24) of the housing (12) can always be released or is released.

8. Drive device according to at least one of the preceding claims, characterized in that the valve head (34) of the valve section (32) of the regulating valve (28) is made of an elastic plastic.

9. The drive device according to at least one of the preceding claims, characterized in that the inflow and/or outflow bores (24), in particular having an at least substantially circular cross section, respectively, of the housing (12) are arranged in a row extending parallel to the axis of the cylinder (20) of the piston (18) of the piston-cylinder unit (14) or parallel to the direction of movement of the piston (18) of the piston-cylinder unit.

10. The drive device according to one of claims 1 to 8, characterized in that the inflow and/or outflow bores (24), in particular each having an at least substantially circular cross section, of the housing (12) are offset relative to one another both along the axis of the cylinder (20) of the piston-cylinder unit (14) and in the circumferential direction thereof.

11. Drive arrangement according to at least one of the preceding claims, characterized in that the valve head (34) of the valve section (32) of the regulating valve (28) is provided with at least one at least substantially circular and/or at least one slit-like opening (26).

12. Drive device according to claim 11, characterized in that the respective slit-shaped opening (26) extends parallel or obliquely to the circumference of the valve head (34) of the valve section (32) of the control valve (28) or relative to the axis of the valve bore (30) of the control valve (28) or has a spiral or similar shape.

13. The drive device according to claim 12, characterized in that the valve head (34) of the valve section (32) of the control valve (28) is provided with at least one slit-shaped opening (26), in particular extending obliquely with respect to the axis of the valve bore (30) of the control valve (28), which interacts with the inlet and/or outlet bores (24) of the housing (12), which are offset with respect to one another both along the axis and along the circumference of the cylinder (20) of the piston-cylinder unit (14), in particular each have an at least substantially circular cross section.

14. Drive device according to claim 11 or 12, characterized in that the valve head (34) of the valve section (32) of the regulating valve (28) is provided with slit-like openings (26) extending in the circumferential direction of the valve head (34) respectively, which are offset relative to one another both along the axis of the valve bore (30) or the valve section (32) of the regulating valve (28) and along the circumferential direction of the valve head (34), which openings cooperate with inflow and/or outflow bores (24) of the housing (12) which are offset relative to one another both along the axis and along the circumferential direction of the cylinder (20) of the piston-cylinder unit (14), in particular respectively, have an at least substantially circular cross section.

15. The drive device according to one of claims 1 to 10, characterized in that the valve head (34) of the valve section (32) of the regulating valve (28) is provided with an opening (26), in particular with an at least substantially circular cross section, or with a plurality of openings (26), in particular with an at least substantially circular cross section, which are arranged in a plane perpendicular to the axis of the valve bore (30) or the valve section (32) of the regulating valve (28), which are distributed over the circumference of the valve head (34), in particular each with an at least substantially circular cross section, and which interact with inflow and/or outflow bores (24), in particular each with an at least substantially circular cross section, of the housing (12), which inflow and/or outflow bores are arranged one after the other in a row parallel to the axis of the cylinder (20) of the piston-cylinder unit (14).

16. Drive arrangement according to at least one of the preceding claims, characterized in that the housing (12) and the regulating valve (28) are provided with markings (38, 40) by means of which the regulating valve (28) can be positioned correspondingly exactly in the different regulating parts.