WO2004053344A1

WO2004053344A1 - Bowden cable blocking device and corresponding adjusting system

Info

Publication number: WO2004053344A1
Application number: PCT/EP2003/013778
Authority: WO
Inventors: Robert Kopetzky
Original assignee: Schukra Gerätebau AG
Priority date: 2002-12-06
Filing date: 2003-12-05
Publication date: 2004-06-24
Also published as: AU2003293773A1

Abstract

Disclosed is a Bowden cable blocking device (3) that is to be coupled directly to the Bowden cable (2) such that an adjusting force can be transmitted to the Bowden cable (2) so as to adjust the Bowden cable (2) in a first direction of adjustment while the Bowden cable (2) is blocked or locked by means of a self-locking blocking mechanism so as to prevent the Bowden cable (2) from independently adjusting into a second direction of adjustment when the adjusting force is not applied. The invention is preferably used for Bowden cable arrangements in a system for adjusting a seat component (4), e.g. a lordosis support.

Description

Bowden cable blocking device and corresponding adjustment system

The present invention relates to an adjustment system with an actuator, for example a manual or electrical actuator, for adjusting a function, in particular for adjusting a Bowden cable for adjusting a seat component, and a Bowden cable blocking device for blocking or inhibiting an independent adjustment of a Bowden cable.

Manual and electrical actuators are known to be used to adjust various functions, for example in and on seats, chairs or other applications. A known area of application in combination with a Bowden cable arrangement is, for example, the height or curvature adjustment of a lumbar support integrated in a backrest of a seat, for example a motor vehicle seat, which serves to support the lumbar or lumbar region of a person sitting on the respective seat. Basically, the problem arises that a smooth and energy-saving adjustment of the respective Bowden cable arrangement is desired, in particular a force that is as uniform as possible should be required for the adjustment of the Bowden cable arrangement in both adjustment directions. In addition, it is particularly desirable that the desired setting position of the Bowden cable arrangement can be set as precisely as possible, for example in order to be able to set the height or curvature of the lumbar support as precisely as possible in the application mentioned. This presupposes that the adjustment system provided for adjusting the Bowden cable arrangement operates as free of play or slip as possible and ensures that the once set setting position of the Bowden cable arrangement is subsequently kept as unchanged as possible. In known actuators it is therefore provided to work in a first adjustment direction of the Bowden cable arrangement, which leads in particular to tensioning the Bowden cable arrangement, against a resistance which is necessary as an inhibition against an independent and uncontrolled resetting of the Bowden cable arrangement. The consequence of this technical design is that the efficiency in this first adjustment direction is significantly less favorable than in the opposite second adjustment direction, which leads to relaxation of the Bowden cable arrangement. The result of this is that in the case of an electrical actuator, such a drive must be designed with a higher output than would be necessary for the actual adjustment.

The present invention is therefore based on the object of providing a solution to the aforementioned problem in such a way that a specific function, in particular a Bowden cable, can be adjusted in at least two different adjustment directions, with an improved design of the corresponding adjustment system in particular Costs and / or performance ("performance") is enabled and there is reliable protection against an independent and uncontrolled adjustment.

This object is achieved according to the invention by a Bowden cable blocking device with the features of claim 1 or an adjustment system with the features of claim 23. The dependent claims define preferred and advantageous embodiments of the present invention.

The Bowden cable blocking device according to the invention is designed in such a way that it can be coupled directly to a Bowden cable and allows an adjustment force to be transmitted to the Bowden cable to adjust the Bowden cable in a first adjustment direction, while blocking an independent adjustment of the Bowden cable in a second adjustment direction or inhibits. The first adjustment direction corresponds in particular to tensioning the Bowden cable, while the second adjustment direction corresponds to relaxation of the Bowden cable. According to a first exemplary embodiment, a self-locking element with a bevel can be used for this purpose, the bevel being designed in such a way that when it is adjusted in the first adjustment direction, it enables a relative movement with respect to a surface, for example the surface of a roller, while the bevel upon adjustment in the second adjustment direction, such a relative movement is blocked or at least inhibited.

According to a second exemplary embodiment, the Bowden cable blocking device can have a rotating body, for example in the form of a coil, on which the wire of the Bowden cable is to be wound, so that an adjusting force generated by an actuator for adjusting the Bowden cable in a first adjustment direction for rotating the rotating body in leads a first direction of rotation while blocking the rotation of the rotating body in the second direction of rotation, for which purpose at least one element projecting from the rotating body can be provided, which can be moved together with the rotating body in the first direction of rotation while rotating the Rotating body blocked in the opposite second direction of rotation.

According to the second exemplary embodiment of the invention, several, preferably spring-elastic elements can be arranged from the rotating body, which are arranged uniformly along the circumferential direction of the rotating body and which can be designed in particular in the form of leaf springs, these elements thereby blocking rotation of the rotating body in the second direction of rotation can engage in recesses, which are formed in the circumferential direction of the rotating body, while they can be moved past the recesses when the rotating body is rotated in the first direction of rotation due to their elasticity. Preferably, two opposing elements block rotation of the rotating body in the second direction of rotation essentially simultaneously, ie two opposing elements are active at the same time and simultaneously engage in corresponding recesses in order to prevent the rotating body from rotating in the second direction of rotation. The Bowden cable blocking device can have a drive element, preferably in the form of a gearwheel, which is to be coupled to the Bowden cable, so that a movement of the drive element caused by the respective actuator is transmitted directly to the Bowden cable. The coupling between the Bowden cable and the drive element is in particular such that the Bowden cable can be adjusted in both adjustment directions by moving the drive element. The coupling between the drive element, the Bowden cable and the aforementioned rotating body, however, is such that due to friction, when the drive element moves to adjust the Bowden cable in the first adjustment direction, the rotating body is rotated in the first direction of rotation, while conversely a movement of the drive element for adjusting the Bowden cable in the second adjustment direction does not lead to a rotation of the rotating body in the second direction of rotation due to the blocking or inhibition described above, in the latter case the drive element simply sliding against the rotating body without any movement or rotation of the Rotating body takes place.

The drive element can be resiliently biased via an elastic means, for example in the form of a spiral spring, in such a way that when the drive element moves the Bowden cable in the first adjustment direction, the elastic means absorbs mechanical energy which it supports to move the drive element for adjustment of the Bowden cable in the second adjustment direction again, so that the Bowden cable can be adjusted in both adjustment directions with little effort, the user also not feeling any significant resistance when adjusting the Bowden cable and thus having the impression of a smooth, stepless adjustment process.

The Bowden cable blocking device according to the invention is characterized in particular by the fact that it ensures reliable blocking or inhibition of an independent adjustment of the respective Bowden cable by direct coupling with the Bowden cable, so that an adjustment position of the Bowden cable once taken is independent of the position on the Bowden cable. kend load can be reliably maintained, which helps that any position of the Bowden cable can be set reliably and accurately by the user in a simple manner. The blocking or Inhibition function in particular separated from the adjustment function of the respective actuator provided, ie the functions "adjustment" and "inhibition / blocking" are carried out by two separate units, although these two units can of course be provided in a closed assembly, ie a complete physical Separation is possible but not mandatory.

The adjustment system according to the invention thus comprises an actuator for adjusting at least one function, in particular a Bowden cable for adjusting a seat component, for example a lumbar support, in at least two adjustment directions, and a blocking device provided separately for blocking or inhibiting the adjustment of the at least one function in at least one of the adjustment directions. Since the previously described principle of the separation of the functions "adjustment" and "inhibition / blocking" can also be transferred to other adjustable functions, the blocking device can be the Bowden cable blocking device explained above, but is not limited to this. In any case, however, the blocking device is designed such that it is a self-locking blocking device for preventing an independent and uncontrolled adjustment of the respective adjustment function in at least one adjustment direction of the adjustment function. The present invention can generally be integrated into any adjustment system, i.e. For example, a combination with both electrical and manual actuators is possible.

The present invention is explained in more detail below with reference to the accompanying drawing using preferred exemplary embodiments.

1 shows a schematic illustration to explain the functioning of an adjustment system according to the invention, 2 shows a schematic illustration of an adjustment system according to the invention with an actuator and a self-locking blocking device according to a first embodiment of the invention,

3 shows a schematic illustration to explain the mode of operation of the exemplary embodiment shown in FIG. 2,

4A-4D show different views of a blocking device according to a second embodiment of the present invention,

5 shows an exploded perspective view of the blocking device shown in FIG. 4,

FIG. 6 shows individual part views of the blocking device from FIGS. 4 and 5, and

FIG. 7 shows a cross-sectional view of the blocking device of FIGS. 4-6 to explain the blocking function.

1 shows in the form of a schematic representation the mode of operation of the present invention.

1, an actuator 1, for example a manual or electrical actuator, is indicated, which is provided to exert an adjusting force on an adjusting element 2, for example a Bowden cable. By actuating the actuator 1, the adjustment element 2 can in particular be adjusted in a first adjustment direction and in a second adjustment direction. By adjusting the adjusting element 2, a suitable component 4, for example a seat component, in particular a lumbar support in a seat of any kind, can be adjusted, whereby by adjusting the adjusting element 2 a height adjustment or a curvature adjustment of the lumbar support can be possible. As can be seen from FIG. 1, the adjustment element 2 is coupled to a blocking device 3, which is designed in such a way that it enables the adjustment force of the actuator 1 to be transmitted to the adjustment element 2 in the first adjustment direction, while conversely an independent adjustment of the adjustment element 2 in the second direction of adjustment, ie a readjustment, is inhibited or blocked. The actuator 1 only performs the aforementioned adjustment function, but no inhibition function. To inhibit an independent and uncontrolled adjustment, the blocking device 3 is provided separately from the actuator 1.

FIG. 2 shows a schematic illustration of a self-locking adjustment system according to an exemplary embodiment of the present invention.

Again, an actuator 1, for example a manual or electrical actuator, is provided, which is coupled to a Bowden cable as an adjusting element 2. The actuator 1 adjusts the Bowden cable 2 in a first adjustment direction, the first adjustment direction being able to correspond in particular to tensioning the wire of the Bowden cable 2, i.e. when the Bowden cable 2 is adjusted in the first adjustment direction, the wire of the Bowden cable 2 is moved to the left in FIG. 2 and drawn into the casing of the Bowden cable 2. In addition, the actuator 1 can adjust the Bowden cable 2 in a second adjustment direction, which corresponds to an adjustment of the wire of the Bowden cable 2 to the right in FIG. 2 and thus a relaxation of the Bowden cable. A component to be adjusted, not shown in FIG. 2, for example a seat component or the like, can be coupled to the Bowden cable 2 in order to thus perform an adjustment function with respect to this seat component.

In the adjustment system shown in FIG. 2, the actuator 1 only exerts an adjustment function, but no inhibition function. To inhibit or block against an independent and uncontrolled adjustment, a blocking device 3 is provided separately from the actuator 1, which in the illustrated embodiment has a stationary body 5 with a self-locking element 7 attached to it, at the outer end of which a bevel is provided, in combination with a role 6 includes. The roller 6 is coupled to the Bowden cable 2 such that it is rotated in a first or second direction of rotation depending on the adjustment of the Bowden cable 2 in the first or second adjustment direction. 2, the roller 6 is rotated counterclockwise when the Bowden cable 2 is adjusted in the first direction of adjustment is, while an adjustment of the Bowden cable 2 in the second adjustment direction would lead to a rotation of the roller 6 in the clockwise direction of FIG. 2.

It can be seen from FIGS. 2 and 3 that the coupling between the bevel of the self-locking element 7 and the surface of the roller 6 is such that the Bowden cable 2 can be adjusted in the first adjustment direction without substantial resistance, since the roller 6 with its surface along the bevel of the self-locking element 7 can easily be moved to the left in FIG. 3. Conversely, however, an independent and uncontrolled adjustment of the Bowden cable 2 in the second adjustment direction is blocked by the fact that this would lead to a rotation of the roller 6 in FIG. 2 to the right, but due to the beveling of the self-locking element 7, such a relative movement of the surface of the Roll 6 compared to the beveling of the self-locking element 7 in FIG. 3 to the right by the beveling of the self-locking element 7 is only possible against a certain resistance or is completely blocked, so that an independent and uncontrolled adjustment of the Bowden cable 2 is prevented.

Of course, the arrangement shown can also be modified such that the body 5 is coupled with the self-locking element 7 to the Bowden cable and is moved while the roller 6 is stationary.

4 shows a Bowden cable blocking device 3 according to a further exemplary embodiment of the present invention, with FIG. 4A a side view, FIG. 4B a top view, FIG. 4C a perspective view and FIG. 4D another side view of the Bowden cable blocking device 3 represents.

The exemplary embodiment shown in FIG. 4 is explained in more detail below with reference to FIGS. 5-7, FIG. 5 showing an exploded view of the Bowden cable blocking device 3, while in FIG. 6 the individual components of the Bowden cable in a perspective view Blocking device 3 are shown. 7 is a plan view of the Bowden cable Blocking device 3 is shown in the form of a cross-sectional view from below of the Bowden cable blocking device 3 in order to explain the blocking function of this exemplary embodiment in more detail.

The Bowden cable blocking device 3 shown in FIGS. 4-7 comprises an upper housing part 8 and a lower housing part 13, which are held together by means of bolts 14 which engage in holes 35 in the lower housing part 13. The components shown in FIG. 5 are accommodated in the order shown between the two housing parts 8, 13 in the interior of the housing formed thereby, namely a spiral spring 9, a gearwheel 10 with a drive shaft 25 coupled thereto, a Bowden cable 2 with a sleeve 28 and a wire 29 slidably arranged in the sleeve 28, a rotating body 11 and a plurality of leaf springs 12. The individual components will be explained in more detail below.

A hole 15 is provided in the upper side of the upper housing part 8, through which the drive shaft 25 protrudes outwards. The drive shaft 25 can be coupled to any actuator, for example a handwheel or a motor-driven actuator, wherein the actuator selected in each case transmits a rotary movement to the drive shaft 25 in a first direction of rotation or an opposite second direction of rotation.

As can be seen from FIG. 6, the drive shaft 25 has at one end a pinion 26 which engages with the drive element 10 designed as a gearwheel, so that a rotation of the drive shaft 25 is transmitted directly to a corresponding rotation of the drive element 10.

A central, cylindrical projection 23 is formed on one side of the drive element 10, with the aid of which the drive element 10 can be mounted in a central depression 17 formed on the inside of the upper housing part 8, which in turn is formed in an annular projection 16. A slot is formed in the longitudinal direction of this central projection 23, into which an end 21 of the spiral spring 9 engages. There is also a slot for this 18 is provided in the annular projection 16 of the upper housing part 8, so that the spiral spring 9 is coupled via its end 21 on the one hand to the drive element 10 and on the other hand to the upper housing part 8. In the area of the circumference of the drive element 10, a further cylindrical projection 24, in particular in the form of a pin, is formed, which protrudes from the surface of the drive element 10 on the same side as the central projection 23. The other end 20 of the coil spring 9 is hooked into this projection 24, so that when the drive element 10 is rotated clockwise in FIG. 5, the coil spring 9 is tensioned in such a way that a rotation of the drive element 10 counterclockwise by that of the coil spring 9 previously recorded mechanical energy can be supported while relaxing the coil spring 9. Opposite the pin-like projection 24, a recess 25 is formed in the drive element 10, into which a thickening 27 attached to the wire 29 of the Bowden cable 2 can be hung. A further central cylindrical projection 22 is formed on the back of the drive element 10, the diameter of which is significantly larger than the diameter on the front of the existing central projection 23.

The rotating body 11 is designed in the form of a coil with a central opening 30. The central opening 30 is delimited by a cylindrical or annular edge 31 which protrudes from the rotating body 11, the edge 31 of the rotating body 11 being used for winding up the wire 29 of the Bowden cable 2. The diameter of the central opening 30 and the diameter of the rear central projection 22 of the drive element 10 are dimensioned such that the central projection 22 can be inserted into the central opening 30. The coupling between the drive element 10 and the rotating body 11 is in particular such that rotation of the driving element 10 in FIG. 5 clockwise due to friction between the wire 29 of the Bowden cable 2 driven by the driving element 10 and the surface of the edge 31 of the rotating body 11 is transferred to the rotating body 11, the frictional force depending on the number of windings of the wire 29 on the surface of the edge 31. 5 clockwise rotation of the drive member 10 thus transferred directly to the rotating body 11 so that it can also rotate clockwise.

On the rear side of the rotating body 11, in a section 32 protruding from the rear side of the rotating body 11, several recesses 33 are provided which are formed uniformly along the circumference of the rotating body 11 and each serve to receive a leaf spring 11. The orientation of the recesses 33 is in particular such that when the leaf springs 12 are inserted into the recesses 33, the leaf springs 12 are arranged as shown in FIG. 5, so that the leaf springs 12 in each case in FIG. 5 slightly counterclockwise over the side edge of the section 32 protrude.

In the lower housing part 13, a cylindrical projection 38 is formed, the outside diameter of which is slightly smaller than the inside diameter of the central opening 30 of the rotating body 11, while the inside diameter of the central projection 38 is slightly larger than the outside diameter of the central projection 22 of the drive element 10, so that the drive element 10 with the rotating body 11 can be placed on the projection 38 of the lower housing part 13, the central projection 22 of the driving element being rotatably mounted in the opening of the projection 38, while conversely the rotating body 11 is rotatably mounted on the projection 38. In addition, a further cylindrical projection 39 protrudes from the underside of the lower housing part 13, which serves as a support for the lower end of the drive shaft 25 adjoining the pinion 26 (cf. FIG. 6). Furthermore, a recess 36 is provided in one side of the lower housing part 13, a projection 19 being formed in a side wall thereof corresponding to the recess 36 in the upper housing part 18. When the two housing parts 8, 13 are assembled, the projection 19 and the recess 36 form a passage which is adapted to the diameter of the wire 29 of the Bowden cable 2, so that the wire 29 can run essentially smoothly through this passage while the sheath 28 of the Bowden cable extends 2 supported on the outside of the housing parts 8, 13. O 2004/053344

-12-

5 and 6, the central cylindrical projection 38 of the lower housing part 13 is surrounded by an annular recess 37 with an external toothing, which is formed in the underside of the lower housing part 13. The individual teeth of this external toothing form recesses into which the ends of the leaf springs 12, which protrude slightly from the outside of the section 32 of the rotary body 11, can engage.

This will be explained in more detail below with reference to FIG. 7, FIG. 7 showing a cross-sectional view of the Bowden cable blocking device 3 in the assembled state from below and the section plane running through the lower housing part 13 and the section 32 of the rotating body 11.

In the exemplary embodiment shown, the external toothing of the annular recess 37 comprises a total of 92 teeth, while the leaf springs 12 are regularly spaced apart from one another at 60 ° in the angular direction. The gear ratio between drive shaft 25 and rotating body 11 is, for example, 5. From the illustration in FIG. 7 it can be seen that the opposite leaf springs 12a, 12b or 12c, 12d or 12e, 12f are active in parallel and when the rotating body is rotated 11 in Fig. 5 counterclockwise, ie 7 in clockwise direction, engage in corresponding teeth and thus block rotation of the rotating body 11 in the corresponding direction of rotation. The individual leaf spring pairs act with respect to the teeth of the external toothing with an offset of 1/3 of a tooth, which has the consequence that in FIG. 7 a reverse rotation of the rotating body 11, i.e. a counter-clockwise rotation in FIG. 7 corresponds to a maximum angle of rotation of the handwheel coupled to the drive shaft 25 of (360 92) x (1/3) x 5 = 6.5 °.

The above explanation with reference to FIG. 7 makes it clear that a once set position of the Bowden cable 2 is not only reliably secured against an independent resetting of the Bowden cable, but that this can also be done in an adjustment of the drive shaft 25 that is minimally perceptible by a user coupled actuator reflects. The above-described embodiment using the leaf springs 12 is particularly advantageous due to the moment-free absorption of the respectively acting restoring force by two leaf springs 12 lying opposite each other. On the other hand, due to the design described above, the return angle resulting when a handwheel is used as an actuator when the handwheel is released is divided into three and thus significantly reduced.

Irrespective of the design described above, however, it would also be possible, for example, to use a freewheel to inhibit or block an independent reset of the Bowden cable.

From the previous description of this further exemplary embodiment with reference to FIGS. 4-7, it becomes clear that, due to the special coupling between the drive element 10, the Bowden cable 2, the rotating body 11, the leaf springs 12 and the annular recess 37 with the external toothing, a rotation 5 in the clockwise direction can be directly transferred to a corresponding rotation of the rotating body 11, since the leaf springs 12 can be moved due to their orientation along the teeth of the external toothing of the annular recess 37, so that the wire 29 of the Bowden cable 2 is open the surface of the edge 31 protruding from the rotating body 11 can be wound, which corresponds to a tensioning of the Bowden cable 2. If, on the other hand, no more adjusting force is exerted on the drive element 10, a reset, i.e. an independent adjustment, of the Bowden cable 2 by blocking the rotation of the rotating body 11 in FIG. 1 is due to the engagement of the leaf springs 12 in the external toothing of the annular recess 37 of the lower housing part 13. 5 counterclockwise and in Fig. 7 clockwise reliably prevented. A relaxation of the Bowden cable 2 is only possible if an adjusting force is exerted on the drive element 10 via the drive shaft 25 in such a way that the drive element 10 is rotated counterclockwise in FIG. 5, which unwinds the wire 29 of the Bowden cable 2 from of the surface of the edge 31 of the rotating body 11, but the rotating body is still held in position by the leaf springs 12 engaging in the external toothing. O 2004/053344

-14-

Finally, it should be pointed out that fastening projections 34 are attached to the lower housing part 13, which serve to lock the Bowden cable blocking device 3 at a desired position, for example directly on a seat or a backrest of a seat, together with an actuator coupled to the drive shaft 25 to install.

Claims

PATENT CLAIMS

1. Bowden cable blocking device, wherein the Bowden cable blocking device (3) is to be coupled to a Bowden cable (2), and wherein the Bowden cable blocking device (3) is designed such that it transmits an adjusting force to the Bowden cable (2) Adjustment of the Bowden cable (2) in a first adjustment direction enables and independent adjustment of the Bowden cable (2) in a second adjustment direction of the Bowden cable (2) is blocked.

2. Bowden cable blocking device according to claim 1, characterized in that the first adjustment direction corresponds to a tensioning of the Bowden cable (2) and the second adjustment direction corresponds to a relaxation of the Bowden cable (2).

3. Bowden cable blocking device according to claim 1 or claim 2, characterized in that the Bowden cable blocking device comprises a rotating body (11) to be coupled to the Bowden cable (2).

4. Bowden cable blocking device according to claim 3, characterized in that the rotating body (11) is designed such that the Bowden cable (2) on the rotating body (11) is to be wound up.

5. Bowden cable blocking device according to claim 3 or claim 4, characterized in that the coupling of the Bowden cable (2) with the rotating body (11) is such that a movement of the Bowden cable (2) for adjusting the Bowden cable (2) is transmitted in the first adjustment direction to the rotating body (11) for rotating the rotating body (11).

6. Bowden cable blocking device according to claim 5, characterized in that the coupling between the rotating body (11) and the Bowden cable (2) is such that the movement of the Bowden cable (2) for adjusting the Bowden cable (2) in the first adjustment direction Friction is transmitted to the rotating body (11).

7. Bowden cable blocking device according to one of claims 3-6, characterized in that from the rotating body (11) at least one element (12) protrudes, which is caused by an independent adjustment of the Bowden cable (2) in the second adjustment direction of rotation of the rotating body (11) blocked.

8. Bowden cable blocking device according to claim 7, characterized in that the at least one of the rotating body (11) projecting element (12) is resilient.

9. Bowden cable blocking device according to claim 7 or claim 8, characterized in that protruding from the rotating body (11) a plurality of uniformly distributed along the circumferential direction of the rotating body (11) elements (12), which by an independent adjustment of the Bowden cable (2) Block the rotating body (11) from rotating in the second adjustment direction.

10. Bowden cable blocking device according to one of claims 7-9, characterized in that the rotating body (11) is rotatably mounted along a plurality of recesses distributed in the circumferential direction of the rotating body (11), the rotating body (11) projecting with the at least one of them elegans ,, "",, 2004/053344

-17-

element (12) is designed such that when the Bowden cable (2) is adjusted in the first adjustment direction, a corresponding rotation of the rotating body (11) with the at least one element (12) protruding therefrom along the recesses in a first direction of rotation is possible, while a rotation of the rotating body (11) is blocked by engagement of the at least one projecting element (12) in one of the recesses in a second direction of rotation.

11. Bowden cable blocking device according to claim 10, characterized in that the plurality of recesses are teeth of a toothing (37) formed along the circumferential direction of the rotating body (11).

12. Bowden cable blocking device according to one of claims 7-11, characterized in that the rotating body (11) projects a plurality of elements (12) distributed uniformly along the circumferential direction of the rotating body (11) in such a way that in each case two essentially opposite elements ( 12a, 12b; 12c, 12d; 12e, 12f) substantially simultaneously block a rotation of the rotating body (11) caused by an independent adjustment of the Bowden cable (2) in the second adjustment direction.

13. Bowden cable blocking device according to one of claims 7-12, characterized in that a first side of the rotating body (11) with the Bowden cable (2) is to be coupled, while from a second side of the rotating body (11) the at least one element Blocking of a rotation of the rotating body (11) during an independent adjustment of the Bowden cable (2) in the second

Protrudes.

14. Bowden cable blocking device according to one of the preceding claims, characterized in that 2004/053344

-18-

that the Bowden cable blocking device (3) comprises a drive element (10) to be coupled to an actuator for generating an adjusting force for the Bowden cable (2), the drive element (10) being coupled to the Bowden cable (2).

15. Bowden cable blocking device according to claim 14, characterized in that the drive element (10) has a recess (25) for hanging a thickening (27) of a wire (29) of the Bowden cable (2).

16. Bowden cable blocking device according to claim 14 or claim 15, characterized in that the coupling between the drive element (10) and the Bowden cable (2) is such that by moving the drive element (10) of the Bowden cable (2) both in the first Adjustment direction as well as in the second adjustment direction is adjustable.

17. Bowden cable blocking device according to one of claims 14-16, characterized in that the drive element (10) is coupled to a drive shaft (25) to be coupled to the actuator (1).

18. Bowden cable blocking device according to claim 17, characterized in that the drive element (10) is a gearwheel, the drive shaft (25) having a pinion (26) to be coupled to the gearwheel.

19. Bowden cable blocking device according to one of claims 14-18, characterized in that the drive element (10) deforms an elastic means (9) in such a way that it absorbs mechanical energy when it is moved to adjust the Bowden cable (2) in the first adjustment direction. so that a movement of the drive element (10) to adjust the Bowden cable (2) in the two 2004/053344

-19-

te adjustment direction is supported by a reshaping of the elastic means (9).

20. Bowden cable blocking device according to one of the preceding claims, characterized in that the Bowden cable (2) is to be coupled to the Bowden cable blocking device (3) in such a way that a sheath (28) of the Bowden cable (2) on the Bowden cable blocking device (3) supports.

21. Bowden cable blocking device according to one of claims 1-2, characterized in that the Bowden cable blocking device (3) comprises an element (7) with a bevel, the bevel of the self-locking element (7) being such that the element ( 7) when the Bowden cable (2) is adjusted in the first adjustment direction, a relative movement between the bevel and a surface of a body (6) is possible, while when the Bowden cable (2) is adjusted independently in the second adjustment direction, the bevel of the self-locking element ( 7) blocking a relative movement between the bevel and the surface of the body (6).

22. Bowden cable blocking device according to claim 21, characterized in that the surface is a surface of a roller (6).

23. Adjustment system for adjusting at least one function (2) in at least two adjustment directions, with an actuator (1) for generating an adjustment force for adjusting the at least one function (2) in the at least two adjustment directions, and with one of the actuator (1) separately provided blocking device device (3) for blocking an independent adjustment of the at least one function (2) in at least one of the adjustment directions.

24. Adjustment system according to claim 23, characterized in that the adjustment system for adjusting a Bowden cable (2) is designed as the at least one function, and that the blocking device (3) is a Bowden cable blocking device according to one of claims 1-22.

25. Adjustment system according to claim 23 or 24, characterized in that the actuator (1) and the blocking device (3) are designed in the form of a common and closed assembly.

26. Adjustment system for adjusting a seat component, characterized in that the adjustment system is an adjustment system according to one of claims 23-

25 is.

27. Adjustment system for a seat component, characterized in that the adjustment system for adjusting the seat component is designed with the aid of a Bowden cable (2), and that the adjustment system comprises a Bowden cable blocking device according to one of claims 1-22.

28. Adjustment system according to claim 26 or claim 27, characterized in that the adjustment system for adjusting a lumbar support is designed as the seat component.