Adjustment arrangement for a locking element of a motor vehicle

Abstract

The invention relates to an adjustment arrangement for a locking element (2) of a motor vehicle with a motion support arrangement (3) which has a first connection (4) and a second connection (5) for diverting movements along a geometric diverting axis (6), wherein the adjustment arrangement (1) has a tubular adjustment housing (7) with an inner housing tube (9) formed by a sleeve (8) and an outer housing tube (10), which telescopically slide into each other when the adjustment arrangement (1) is adjusted between a retracted position and an extended position, wherein one of the two connections (4, 5) is assigned to each of the sleeve (8) and the outer housing tube (10), wherein the adjustment housing (7) provides an interior space in which the motion support arrangement (3) is at least partially arranged.wherein the motion support arrangement (3) comprises a rod (11) axially fixed to and surrounded by the outer housing tube (10), the rod (11) being associated with the same connection (4) as the outer housing tube (10). It is proposed that at least one axially fixed and pivot-resistant inner guide element (12) extends from the sleeve (8) axially in the direction of the first connection (4) associated with the outer housing tube (10), surrounding the rod (11) over a portion of its axial extent and guiding the rod (11).

Description

The present invention relates to an adjustment arrangement for a closure element of a motor vehicle according to the preamble of claim 1 and to an adjustment arrangement for a closure element of a motor vehicle according to the preamble of claim 17.The term "closure element" is to be understood broadly in the present case. It comprises, for example, a tailgate, a rear cover, a bonnet, a side door, a cargo compartment flap, a window pane, a lifting roof or the like of a motor vehicle. The field of application of the adjustment of a tailgate of a motor vehicle is in the foreground below.The known prior art (DE 10 2021 129 734 A1), on which the invention starts out, relates to an adjustment arrangement for a tailgate in the form of a gas pressure element, in particular a gas pressure spring. A movement support arrangement, which supports the opening and closing movement of the tailgate by means of spring force, has two connections for diverting linear movements along a geometric diversion axis. One connection serves for coupling the adjusting arrangement to the tailgate, the other connection serves for coupling the adjusting arrangement to the motor vehicle body. A tube-like adjustment housing provides an interior space in which a rod with a piston and a spring arrangement of the movement assistance arrangement are arranged. The adjustment housing has a housing outer tube and a housing inner tube which, when the adjustment arrangement is adjusted between a retracted position and an extended position, diverge telescopically one inside the other. The inner housing tube is a sleeve in which the piston is guided along the geometric discharge axis. Such an adjustment arrangement is usually used as a passive side in a drive arrangement for a tailgate, that is to say as an adjustment arrangement without its own drive motor, in order to support a further adjustment arrangement with its own drive motor, which is used as an active side of the drive arrangement.The structural design of the known adjustment arrangement ensures a high level of operational reliability and a high level of ease of use with regard to manual adjustability. However, it is a challenge to ensure reliable tilting safety. In order to reliably prevent lateral tilting of the adjustment arrangement in the extended position, the housing inner tube and the housing outer tube overlap in the axial direction, i.e. along the geometric discharge axis, to a certain extent. However, this has a disadvantageous effect on the usable axial stroke of the adjustment arrangement. Thus, when the outer housing tube, in the retracted position of the adjustment arrangement, closes off with the connection-side end of the inner housing tube, a comparatively large axial distance still remains between the free end of the rod or the piston and the connection-side axial end of the inner space enclosed by the inner housing tube. The theoretically possible stroke is thus not fully utilized. If one wanted to make better use of the theoretically possible stroke, either the housing outer tube would have to be moved beyond the connection-side end of the housing inner tube, which is not practical from a design standpoint, or the housing outer tube would have to be shortened, whereby then, however, the overlap between the housing inner tube and the housing outer tube would be reduced in the axial direction, which would lead to the burden of tilting safety.The invention is based on the problem of configuring and further developing the known adjustment arrangement in such a way that, with the greatest possible stroke, the greatest possible safety against lateral tilting of the adjustment arrangement in the extended position is achieved.The above problem is solved by the features of the characterizing part of claim 1.The fundamental consideration is that of displacing an overlap of two axially guided parts of the adjustment arrangement from the outside of the adjustment arrangement radially inward, which reliably ensures the safety against tilting, whereby the outer housing tube can be shortened, since the overlap between the outer housing tube and the inner housing tube is then no longer decisive for the safety against tilting. By shortening the outer housing tube, it can then be moved further in the retracted position of the adjustment arrangement in the direction of the connection-side end of the inner housing tube without this end projecting beyond it. Accordingly, the free end of the rod or the piston can also be moved further and accordingly execute a greater stroke with the same technical length of the adjustment arrangement or of the adjustment housing.In detail, it is proposed that at least one inner guide element which is axially fixed and swivel-fixed with respect to the sleeve extends axially from the sleeve in the direction of the first connection assigned to the outer housing tube, surrounds the rod over a part of its axial extent and in which the rod is guided.According to the particularly preferred embodiment according to claim 2, the sleeve has at its one end a radially inwardly directed collar which makes it possible in a simple manner to provide a plurality of functions. Thus, the collar can serve on the one hand for connecting the inner guide element, and on the other hand, on its other axial side, it can serve as a bearing surface for the free end of the rod or, if the sleeve forms the cylinder of a cylinder-piston arrangement, for a piston at the end of the rod. A further function is explained below in connection with a spring arrangement.Claims 3 to 5 relate to a spring arrangement with which the first connection can be prestressed against the second connection in a simple manner. If a collar as described above is present, this can also serve as a further function as a contact surface of a spring element of the spring arrangement.According to the particularly preferred embodiment according to claims 6 to 8, a securing arrangement is provided which, in particular via at least two securing elements, in the event of failure of the movement support arrangement, in particular in the event of a fire, when, for example, plastic parts of the movement support arrangement melt, securely holds the spring arrangement in the axial direction and prevents the spring arrangement from expanding in an uncontrolled manner.In claims 9 and 10, particularly preferred materials and cross-sectional shapes of essential components of the movement support arrangement are specified.Claim 11 specifies various preferred design possibilities for the realization of the at least one inner guide element.Claim 12 relates to a rotation prevention means which, if this is required in terms of construction, reliably prevents a rotation of individual components relative to one another in a simple manner.According to the particularly preferred embodiment according to claims 13 and 14, in addition to the at least one inner guide element, at least one outer guide element can also be provided, which supports the realization of a reliable anti-tipping device even further.Claim 15 defines particularly preferred axial extents of the inner guide element and of the outer guide element for optimizing the anti-tipping device.According to the particularly preferred embodiment of claim 16, the securing arrangement has a further, third securing element which, while maintaining high safety against uncontrolled expansion of the spring arrangement in the event of a failure of the movement support arrangement, increases the design freedom. For example, an axial securing of the spring arrangement can be achieved on one side in that one of the two securing elements interacts with the further securing element in an axially retaining manner in the event of a failure of the movement assistance arrangement, that is to say these two securing elements supplement one another in terms of function.According to a further teaching according to claim 17, which is of independent significance, a further adjustment arrangement having a movement support arrangement is claimed, wherein the movement support arrangement has a first connection and a second connection for diverting, in particular linear, movements along a geometric diversion axis, wherein the adjustment arrangement has a tube-like adjustment housing having a housing inner tube formed by a sleeve and a housing outer tube which, during an adjustment of the adjustment arrangement between a retracted position and an extended position, merge telescopically one into the other, wherein the sleeve and the housing outer tube are each assigned to one of the two connections, wherein the adjustment housing provides an interior space in which the movement support arrangement is at least partially arranged, wherein the movement support arrangement has a rod which is axially fixed to the housing outer tube and surrounded by the housing outer tube, preferably over its entire axial extent, wherein the rod is assigned to the same connection as the outer housing tube.It is essential here that at least one outer guide element which is axially fixed and swivel-fixed relative to the sleeve extends from the sleeve axially in the direction of the first connection assigned to the housing outer tube, which connection is surrounded by the housing outer tube and on which the housing outer tube is guided, that the movement assistance arrangement has a spring arrangement with a spring element, in particular a spiral compression spring, arranged in a radial intermediate space between the rod and the housing outer tube, and that the spring arrangement, in particular the spring element, prestresses the first connection against the second connection, in particular in the direction of the extended position of the adjustment arrangement, and is axially supported at one end on a first spring support section which is axially fixed relative to the housing outer tube and at the other end on a second spring support section which is axially fixed relative to the sleeve, that the spring element extends in sections in the radial intermediate space between the at least one outer guide element and the rod. Preferably, it is provided that in the axial section of the movement support arrangement, in which the at least one outer guide element extends, an axial spring end section of the spring element facing the sleeve is guided on the rod.Reference may be made to all explanations concerning the proposed adjustment arrangement according to the first teaching.The invention is explained in more detail below with reference to a drawing which merely represents exemplary embodiments. The drawing shows FIG. 1 shows a schematic illustration of the rear region of a motor vehicle having a tailgate, to which a proposed adjustment arrangement is assigned, FIG. 2 shows the adjusting arrangement according to FIG. 1 in a longitudinal section in a) of a retracted position and b) of an extended position, FIG. 3 shows a detailed view of an exemplary embodiment of the adjustment arrangement according to FIG. 2 in the region of a guide element, FIG. 4 shows a detailed view of a further exemplary embodiment of the adjustment arrangement according to FIG. 2 in the region of a guide element, and FIG. 5 shows a detailed view of yet another exemplary embodiment of the adjustment arrangement according to FIG. 2 in the region of a guide element.The exemplary embodiment illustrated in the figures and thus preferred relates to an adjustment arrangement 1 for a closure element 2 of a motor vehicle. Such an adjustment arrangement 1 is used in a drive arrangement for the closure element 2 here and preferably as a passive side, that is to say as an adjustment arrangement 1 without its own drive motor, in order to support a further adjustment arrangement 1 with its own drive motor, here a spindle drive, which is used as an active side of the drive arrangement. Such a drive arrangement is illustrated by way of example in FIG. 1.With regard to the further understanding of the term "closure element" 2, reference may be made to the introductory part of the description. The invention is explained below with reference to a closure element 2 designed as a tailgate.The adjustment arrangement 1 shown in FIG. 2 has a movement assistance arrangement 3, which has a first connection 4, also referred to below as a rod-bearing-side connection, and a second connection 5, also referred to below as a sleeve-side connection, for diverting, in particular linear, movements along a geometric diversion axis 6.The adjustment arrangement 1 further comprises a tube-like adjustment housing 7 with a housing inner tube 9 formed by a sleeve 8 and a housing outer tube 10, which upon adjustment of the adjustment arrangement 1 between a retracted position (FIG. 2 a )) and an extended position (FIG. 2 b )) telescopically merge into one another, i.e. axially overlap. The term "axial" is always referred to the geometric lead-out axis 6. "Axially fixed" accordingly means that a relative movement in the axial direction is prevented. The term "radial" used in the following text is also always referred to the geometric discharge axis 6.The sleeve 8 and the housing outer tube 10 are each assigned one of the two connections 4, 5, that is to say that the sleeve 8 and the housing outer tube 10 are axially fixed with respect to the respective connection. The adjustment housing 7 provides an interior space in which the movement assistance arrangement 3 is at least partially arranged.The housing outer tube 10 and / or the sleeve 8 can be connected to the respectively associated connection 4, 5 in a form-fitting, force-fitting and / or materially integral manner. It is particularly preferred if the housing outer tube 10 and / or the sleeve 8 is welded to the respectively associated connection 4, 5, in particular by means of ultrasonic or laser beam welding.The movement assistance arrangement 3 has a rod 11 which is axially fixed with respect to the housing outer tube 10 and is surrounded by the housing outer tube 10, preferably over its entire axial extent, and is assigned to the same connection 4 as the housing outer tube 10, that is to say is mounted axially fixed on the same connection. Accordingly, this connector 4 is referred to as a rod bearing-side connector. The other connection 5 is correspondingly referred to as a sleeve-side connection.The rod 11 can be connected to the first connection 4 assigned to the housing outer tube 10 in a form-fitting, force-fitting and / or firmly bonded manner. It is particularly preferred if the rod 11 is crimped to the first connection 4 assigned to the housing outer tube 10.It is now essential that at least one inner guide element 12 which is axially fixed and swivel-fixed with respect to the sleeve 8 extends from the sleeve 8 axially in the direction of the first connection 4 assigned to the outer housing tube 10, which connection surrounds the rod 11 over part of its axial extension and in which the rod 11 is guided."Fixed to pivoting" in this context means that a pivoting movement, i.e. a lateral tilting, about a pivot axis orthogonal to the geometric discharge axis 6 is prevented.The term "guide" or "guided" means that a sliding bearing is provided, i.e. the rod 11 can slide along in the at least one inner guide element 12 here, which in particular requires that the at least one inner guide element 12 corresponds in cross section to the rod 11.In this way, as can be seen from FIGS. 3 and 4, the at least one inner guide element 12 forms a securing means against lateral tilting of the sleeve 8 relative to the outer housing tube 10. This overlap then serves significantly in particular only to seal the interior of the adjustment housing 7 with respect to the environment, less to provide the tilting safety. In particular, for reliable tilting safety here and preferably an overlap of the sleeve 8 and the outer housing tube 10 over an axial extent corresponding to a maximum of a quarter, preferably a maximum of a fifth, further preferably a maximum of a sixth, of the outer diameter of the sleeve 8 is sufficient.Furthermore, it is provided here and preferably that, as is shown for example in FIG. 3, but also in another embodiment in FIG. 4, the sleeve 8 has, at its end facing the first connection 4 assigned to the outer housing tube 10, a radially inwardly directed collar 13 which connects the at least one inner guide element 12 axially fixedly to the sleeve 8 otherwise, that is to say to the cylindrical part which runs telescopically in the outer housing tube 10. Here and preferably, the collar 13 forms an axial outer surface 14 which is otherwise aligned orthogonally to the geometric discharge axis 6 and / or to the sleeve 8.The inner guide element 12 thus extends in the axial direction starting from the collar 13, so that along the geometric discharge axis 6, the inner guide element 12 extends on the one side of the collar 13 and the sleeve 8, otherwise, that is to say the cylindrical part which runs telescopically in the outer housing tube 10, extends on the other side of the collar 13. In particular, there is a rotationally fixed connection between the at least one inner guide element 12 and the collar 13. A variant of an axially fixed connection between the at least one inner guide element 12 and the collar 13 is here and preferably a one-piece configuration of the at least one inner guide element 12 with the collar 13, wherein, according to another variant, however, a form-fit, force-fit and / or material-fit connection between the at least one inner guide element 12 and the collar 13 is also conceivable.With respect to the collar 13, for reliable tilting safety here and preferably an overlap of the sleeve 8 and the housing outer tube 10 over an axial extent which corresponds to at most 2 times, preferably at most 1.5 times, further preferably at most 1 times, the axial extent of the collar 13 is sufficient.As FIGS. 2 to 5 show, the movement assistance arrangement 3 here and preferably has a spring arrangement 15 with a spring element 16, in particular a spiral compression spring, arranged in a radial intermediate space between the rod 11 and the housing outer tube 10. The spring arrangement 15, in particular the spring element 16, biases the first connection 4 against the second connection 5, in particular in the direction of the extended position of the adjustment arrangement 1. the spring arrangement 15, in particular the spring element 16, is axially supported at one end on a first spring support section 17 axially fixed with respect to the outer housing tube 10 and at the other end on a second spring support section 18 axially fixed with respect to the sleeve 8. Here and preferably, the radially inwardly directed collar 13 of the sleeve 8 forms the second spring support section 18, wherein it is preferably provided that the spring element 16 in the retracted position, in particular also in the extended position, bears axially against the axial outer surface 14 of the collar 13.Furthermore, it is provided here and preferably that the spring element 16 is guided at least in sections (FIGS. 4 and 5 ), optionally even completely (FIG. 3 ), on the inner side of the housing outer tube 10. Additionally or alternatively, it is provided in particular that the spring element 16 is guided with its axial spring end portion 19 facing the sleeve 8 on the outer side of the at least one inner guide element 12 (FIG. 4 ). Here, the preferably spiral spring element 16 then has a smaller winding diameter than in the section of the guide on the inside of the housing outer tube 10.What is illustrated in particular in FIG. 2, here and preferably the movement assistance arrangement 3 also has a securing arrangement 20 which is coupled to the rod 11 in such a way that the spring element 16 is held on the rod 11 in the axial direction in the event of a failure of the movement assistance arrangement 3, in particular in the event of a fire.Here and preferably, it is provided that the securing arrangement 20 has a bar bearing-side securing element 21 made of heat-resistant material, in particular metal, and a sleeve-side securing element 22 made of heat-resistant material, in particular metal, between which the spring element 16, in particular the entire spring arrangement 15, is arranged, and that the two securing elements 21, 22 are coupled axially fixedly to the bar 11 in such a way that the two securing elements 21, 22 are held in the axial direction on the bar 11 in the event of a failure of the movement support arrangement 3, in particular in the event of a fire, and the spring element 16 is secured in the axial direction between the two securing elements 21, 22.A material that is more heat-resistant than the material of the connections 4, 5, the material of the housing outer tube 10 and / or the material of the sleeve 8 is referred to here as a heat-resistant material.It should be mentioned at this point that the sleeve-side securing element 22 here and preferably is part of a piston 23 of a piston unit 24 or forms such a piston 23, wherein the rod 11 here and preferably forms the piston rod 25. The sleeve 8 here and preferably forms the cylinder 26 of a corresponding cylinder-piston arrangement 27. Preferably, the piston 23 divides, in particular either tightly or through which flow can take place, the sleeve 8 into two chambers K 1, K 2, so that the adjustment arrangement 1 forms a gas pressure spring or a gas damper.Furthermore, it is provided here and preferably that the bar bearing-side securing element 21 is arranged axially between the first connection 4 assigned to the housing outer tube 10 and an internally encircling collar 28 on the housing outer tube 10.Due to the axially fixed connection between the outer housing tube 10 and the associated first connection 4, for example by welding, the unit consisting of rod 11 and securing arrangement 20 is held axially fixed with respect to the first connection 4.Additionally or alternatively, it is the case here that the sleeve-side securing element 22 is arranged axially between the collar 13 of the sleeve 8 and the second connection 5 assigned to the sleeve 8.The sleeve-side securing element 22 thus forms an axial stop for the sleeve 8 during the adjustment into the extended position.The rod-bearing-side securing element 21 and / or the sleeve-side securing element 22 is here and preferably formed integrally with the rod 11, here for example by radially widening the rod 11.Alternatively, the rod-bearing-side securing element 21 and / or the sleeve-side securing element 22 can also be a separate, in particular disk-shaped, element which is coupled to the rod 11 in a form-fitting, force-fitting and / or firmly bonded manner.In the case that it is a separate element, it is screwed to the rod 11 at the end, for example.Here and preferably, in particular with regard to optimum safety in the case of the above-mentioned failure, in particular fire, it is provided that the rod 11 is formed from metal and / or that the connections 4, 5, the housing outer tube 10 and / or the sleeve 8 are formed from plastic and / or metal.The rod 11 can be hollow or consist of solid material and / or be threadless or threaded. In the latter case, the rod 11 forms in particular a spindle of a spindle-spindle nut transmission, preferably an active side of the drive arrangement. In this case, the collar 13 forms a corresponding internal thread on the inside and thus forms the spindle nut of the spindle-spindle nut transmission.In the exemplary embodiments shown in FIGS. 2 to 4 and preferred in this respect, a single inner guide element 12 is provided, which is tubular and round or non-round in cross section, in particular angular, preferably polygonal. Alternatively, it is also conceivable that a plurality of inner guide elements 12 are provided as axial web-shaped segments spaced apart from one another in the circumferential direction.To form an optional anti-rotation means, it can furthermore preferably be provided that, in cross section, the outer contour of the sleeve 8 and inner contour of the housing outer tube 10 and / or the outer contour of the sleeve-side securing element 22 and inner contour of the sleeve 8 and / or the outer contour of the rod 11 and inner contour of the individual inner guide element 12 or of the unit of a plurality of inner guide elements 12 are each non-round, in particular angular, preferably polygonal, for example hexagonal.The cross section here means a section orthogonal to the geometric discharge axis 6, i.e. in the radial direction.By means of a non-round contour, a rotation prevention means can be provided with simple means, which prevents a rotational movement of the housing outer tube 10 relative to the sleeve 8 or the connections 4, 5 relative to each other. In principle, if an anti-rotation device is not necessary at an axial location, the respective outer and / or inner contour can also be round.The exemplary embodiment in FIG. 4 differs from that in FIG. 3 in that here and preferably, in addition to the at least one inner guide element 12, at least one outer guide element 29 which is axially fixed and swivel-fixed to the sleeve 8 extends from the sleeve 8 axially in the direction of the first connection 4 assigned to the housing outer tube 10, which is surrounded by the housing outer tube 10 and on which the housing outer tube 10 is guided.The at least one outer guide element 29 thus forms an additional safeguard against lateral tilting of the sleeve 8 relative to the housing outer tube 10. In particular, there is also a rotationally fixed connection between the at least one outer guide element 29 and the collar 13.Here and preferably, the at least one outer guide element 29 is radially spaced apart from the at least one inner guide element 12. The at least one outer guide element 29 extends, in particular parallel to the at least one inner guide element 12, likewise starting from the collar 13 in the axial direction. The collar 13 connects the at least one inner guide element 12 to the at least one outer guide element 29 in an axially fixed manner. In particular, it is the case that along the geometric discharge axis 6, i.e. in the axial direction, the at least one outer guide element 29 extends on the one side of the collar 13 and the sleeve 8, that is to say the cylindrical part which runs telescopically in the outer housing tube 10, extends on the other side of the collar 13.Furthermore, it is here and preferably such that the spring element 16 extends in sections in the radial intermediate space between the at least one outer guide element 29 and the at least one inner guide element 12 (FIG. 4 )."Sectionwise" here means that an axial spring end section 19 of the spring element 16 facing the sleeve 8 extends in the radial intermediate space between the at least one outer guide element 29 and the at least one inner guide element 12.Furthermore, according to FIG. 4 and preferably it is provided that in the axial section of the movement support arrangement 3 in which the at least one outer guide element 29 extends, an axial spring end section 19 of the spring element 16 facing the sleeve 8 is guided on the at least one inner guide element 12.This is preferably provided for the entire adjustment of the adjustment arrangement 1 between the retracted position and the extended position. The spring element 16 is in particular shaped in such a way that it is guided in a first axial section 19, namely said axial spring end section 19, on which at least one inner guide element 12 is guided, and in another, second axial section 30 on the housing outer tube 10. For this purpose, a winding diameter of the spring windings of the spring element 16 varying over the axial extent is preferably provided. In the second axial section 30 of the spring element 16, which is guided on the outer housing tube 10, a greater winding diameter is provided than in the first axial section 19 of the spring element 16, which is guided on the at least one inner guide element 12. The winding diameter preferably varies such that the, here second axial section 30 of the spring element 16 with the larger winding diameter does not interfere with the at least one outer guide element 29 during the adjustment of the adjustment arrangement 1 between the retracted position and the extended position.In the exemplary embodiments shown in the figures and thus preferred, it is particularly preferred that the axial extent of the inner guide element 12 and / or of the outer guide element 29 corresponds to at least 2 times, preferably at least 5 times, more preferably at least 10 times, the axial extent of the collar 13.Additionally or alternatively, it is particularly preferred that the axial extension of the inner guide element 12 corresponds to at least 1.5 times, preferably at least 2 times, more preferably at least 2.5 times, the outer diameter of the sleeve 8.Furthermore, it is additionally or alternatively particularly preferred that the axial extension of the outer guide element 29 corresponds to at least 0.5 times, preferably at least 1 times, more preferably at least 1.2 times, the outer diameter of the sleeve 8.As is shown in the exemplary embodiment in FIG. 3, the securing arrangement 20 can, if required, also have a further securing element 31 made of heat-resistant material, in particular metal, which is arranged between the bar-bearing-side securing element 21 and the sleeve-side securing element 22 and / or between the spring element 16 and the collar 13. The further securing element 31 is then arranged in alignment with the sleeve-side securing element 22 in such a way that it is held by the sleeve-side securing element 22 in the axial direction on the rod 11 in the event of a failure of the movement assistance arrangement 3, in particular in the event of a fire, and secures the spring element 16 in the axial direction.According to FIG. 3, it is here and preferably such that the further securing element 31 extends circumferentially around the rod 11 and / or the at least one inner guide element 12. Additionally or alternatively, the further securing element 31 is axially movable with respect to the rod 11 and / or the at least one inner guide element 12.Here and preferably, the further securing element 31 is a separate, in particular disk-shaped, element.When providing such a further securing element 31, it is then not necessary for the sleeve-side securing element 22 to have an outer contour which corresponds to the inner contour of the sleeve 8, but the sleeve-side securing element 22 can have a smaller cross section. The design freedom is thereby significantly increased.Finally, as shown in FIG. 5, an adjustment arrangement 1 for a closure element 2 of a motor vehicle is also proposed, having a movement assistance arrangement 3, wherein the movement assistance arrangement 3 has a first connection 4 and a second connection 5 for diverting, in particular linear, movements along a geometric diversion axis 6, wherein the adjustment arrangement 1 has a tube-like adjustment housing 7 having a housing inner tube 9 formed by a sleeve 8 and a housing outer tube 10 which, when the adjustment arrangement 1 is adjusted between a retracted position and an extended position, merge telescopically into one another, wherein the sleeve 8 and the housing outer tube 10 are each assigned to one of the two connections 4, 5, wherein the adjustment housing 7 provides an interior space in which the movement assistance arrangement 3 is at least partially arranged, wherein the movement support arrangement 3 has a rod 11 which is axially fixed to the housing outer tube 10 and surrounded by the housing outer tube 10, preferably over its entire axial extent, wherein the rod 11 is assigned to the same connection 4 as the housing outer tube 10.It is essential here that at least one outer guide element 29 which is axially fixed and swivel-fixed with respect to the sleeve 8 extends from the sleeve 8 axially in the direction of the first connection 4 which is assigned to the housing outer tube 10 and is surrounded by the housing outer tube 10 and on which the housing outer tube 10 is guided.An inner guide element 12, as provided in FIGS. 3 and 4, is dispensed with here. Here, the at least one outer guide element 29 then forms an additional securing means against lateral tilting of the sleeve 8 with respect to the housing outer tube 10.It is furthermore essential that the movement support arrangement 3 has a spring arrangement 15 with a spring element 16, in particular a spiral compression spring, arranged in a radial intermediate space between the rod 11 and the housing outer tube 10, and that the spring arrangement 15, in particular the spring element 16, prestresses the first connection 4 against the second connection 5, in particular in the direction of the extended position of the adjustment arrangement 1, and is axially supported at one end on a first spring support section 17 axially fixed with respect to the housing outer tube 10 and at the other end on a second spring support section 18 axially fixed with respect to the sleeve 8, and that the spring element 16 extends in sections in the radial intermediate space between the at least one outer guide element 29 and the rod 11.Here and preferably, it is further provided that in the axial section of the movement support arrangement 3, in which the at least one outer guide element 29 extends, an axial spring end section 19 of the spring element 16 facing the sleeve 8 is guided on the rod 11.This is preferably provided for the entire adjustment of the adjustment arrangement 1 between the retracted position and the extended position. Here, too, the spring element 16 is in particular shaped such that it is guided on the rod 11 in one axial section, namely said axial spring end section 19, and is guided on the outer housing tube 10 in another axial section, which can be an axial spring end section 19 on the other side of the spring. For this purpose, a winding diameter of the spring windings of the spring element 16 varying over the axial extent is preferably provided. In the axial section of the spring element 16 which is guided on the outer housing tube 10, a greater winding diameter is provided than in the axial section of the spring element 16 which is guided on the rod 11. The winding diameter preferably varies such that the axial section of the spring element 16 with the larger winding diameter does not interfere with the at least one outer guide element 29 during the adjustment of the adjustment arrangement 1 between the retracted position and the extended position.Reference may be made to all explanations concerning the proposed adjustment arrangement 1 according to the first teaching.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2021 129 734 A1

[0003]

Claims

Adjusting arrangement for a closure element (2) of a motor vehicle, having a movement assistance arrangement (3), wherein the movement assistance arrangement (3) has a first connection (4) and a second connection (5) for diverting, in particular linear, movements along a geometric diversion axis (6), wherein the adjusting arrangement (1) has a tube-like adjusting housing (7) having a housing inner tube (9) formed by a sleeve (8) and a housing outer tube (10) which, during an adjustment of the adjusting arrangement (1) between a retracted position and an extended position, merge telescopically into one another, wherein one of the two connections (4, 5) is respectively associated with the sleeve (8) and the housing outer tube (10), wherein the adjusting housing (7) provides an interior space in which the movement assistance arrangement (3) is at least partially arranged, wherein the movement support arrangement (3) has a rod (11) which is axially fixed to the housing outer tube (10) and surrounded by the housing outer tube (10), preferably over its entire axial extent, wherein the rod (11) is assigned to the same connection (4) as the housing outer tube (10), characterized in that at least one inner guide element (12) which is axially fixed to the sleeve (8) and is fixed in terms of pivoting extends from the sleeve (8) axially in the direction of the first connection (4) assigned to the housing outer tube (10), surrounds the rod (11) over a part of its axial extent and in which the rod (11) is guided.Adjusting arrangement according to Claim 1, characterized in that the sleeve (8) has, at its end facing the first connection (4) assigned to the outer housing tube (10), a radially inwardly directed collar (13) which otherwise connects the at least one inner guide element (12) to the sleeve (8) in an axially fixed manner, preferably in that the collar (13) forms an axial outer surface (14) which is aligned orthogonally with respect to the geometric discharge axis (6) and / or with respect to the sleeve (8) otherwise.Adjustment arrangement according to claim 1 or 2, characterised in that the movement assistance arrangement (3) has a spring arrangement (15) with a spring element (16), in particular a helical compression spring, arranged in a radial intermediate space between the rod (11) and the housing outer tube (10), and that the spring arrangement (15), in particular the spring element (16), prestresses the first connection (4) against the second connection (5), in particular in the direction of the extended position of the adjustment arrangement (1), and is axially supported at one end on a first spring support section (17) axially fixed with respect to the housing outer tube (10) and at the other end on a second spring support section (18) axially fixed with respect to the sleeve (8), preferably in that the radially inwardly directed collar (13) of the sleeve (8) forms the second spring support section (18), further preferably in that the spring element (16) in the retracted position, In particular, also in the extended position, it axially abuts the axial outer surface (14) of the collar (13).Adjusting arrangement according to one of the preceding claims, characterized in that the spring element (16) is guided at least in sections on the inner side of the housing outer tube (10).Adjusting arrangement according to one of the preceding claims, characterized in that the spring element (16) is guided with its axial spring end portion (19) facing the sleeve (8) on the outer side of the at least one inner guide element (12).Adjustment arrangement according to one of the preceding claims, characterized in that the movement support arrangement (3) has a securing arrangement (20), in that the securing arrangement (20) is coupled to the rod (11) in such a way that the spring element (16) is held on the rod (11) in the axial direction in the event of a failure of the movement support arrangement (3), in particular in the event of a fire, preferably in that the securing arrangement (20) has a securing element (21), on the rod bearing side, made of heat-resistant material, in particular metal, and a securing element (22), on the sleeve side, made of heat-resistant material, in particular metal, between which securing element the spring element (16), in particular the entire spring arrangement (15), is arranged, and in that the two securing elements (21, 22) are coupled to the rod (11) in an axially fixed manner in such a way that the two securing elements (21, are secured in position, In the event of a failure of the movement support arrangement (3), in particular in the event of a fire, the spring element (16) is held on the rod (11) in the axial direction and is secured between the two securing elements (21, 22) in the axial direction.Adjusting arrangement according to one of the preceding claims, characterized in that the bar bearing-side securing element (21) is arranged axially between the first connection (4) assigned to the outer housing tube (10) and a collar (28) running around the inside on the outer housing tube (10), and / or in that the sleeve-side securing element (22) is arranged axially between the collar (13) of the sleeve (8) and the second connection (5) assigned to the sleeve (8).Adjusting arrangement according to one of the preceding claims, characterized in that the rod-bearing-side securing element (21) and / or the sleeve-side securing element (22) is formed integrally with the rod (11) or is a separate, in particular disk-shaped, element which is coupled to the rod (11) in a form-fitting, force-fitting and / or materially integral manner.Adjusting arrangement according to one of the preceding claims, characterized in that the rod (11) is formed from metal, and / or in that the connections (4, 5), the outer housing tube (10) and / or the sleeve (8) are formed from plastic and / or metal.Adjusting arrangement according to one of the preceding claims, characterized in that the rod (11) is hollow or consists of solid material and / or is threadless or fitted with threads.Adjusting arrangement according to one of the preceding claims, characterized in that a single inner guide element (12) is provided which is tubular and round or non-round in cross section, in particular angular, preferably polygonal, or in that a plurality of inner guide elements (12) are provided as axial web-shaped segments spaced apart from one another in the circumferential direction.Adjustment arrangement according to one of the preceding claims, characterized in that in cross section the outer contour of the sleeve (8) and inner contour of the housing outer tube (10) and / or the outer contour of the sleeve-side securing element (22) and inner contour of the sleeve (8) and / or the outer contour of the rod (11) and inner contour of the individual inner guide element (12) or of the unit of a plurality of inner guide elements (12) are each non-round, in particular angular, preferably polygonal.Adjusting arrangement according to one of the preceding claims, characterized in that at least one outer guide element (29) which is axially fixed and swivel-fixed with respect to the sleeve (8) extends from the sleeve (8) axially in the direction of the first connection (4) which is assigned to the housing outer tube (10) and is surrounded by the housing outer tube (10) and on which the housing outer tube (10) is guided, preferably in that the at least one outer guide element (29) is spaced radially from the at least one inner guide element (12), further preferably in that the spring element (16) extends in sections in the radial interspace between the at least one outer guide element (29) and the at least one inner guide element (12).Adjusting arrangement according to one of the preceding claims, characterized in that in the axial section of the movement assistance arrangement (3) in which the at least one outer guide element (29) extends, an axial spring end section (19) of the spring element (16) facing the sleeve (8) is guided on the at least one inner guide element (12).Adjustment arrangement according to one of the preceding claims, characterized in that the axial extent of the inner guide element (12) and / or of the outer guide element (29) corresponds to at least 2 times, preferably at least 5 times, more preferably at least 10 times, the axial extent of the collar (13), and / or in that the axial extent of the inner guide element (12) corresponds to at least 1.5 times, preferably at least 2 times, more preferably at least 2.5 times, the outer diameter of the sleeve (8), and / or in that the axial extent of the outer guide element (29) corresponds to at least 0.5 times, preferably at least 1 times, more preferably at least 1.2 times, the outer diameter of the sleeve (8).Adjustment arrangement according to one of the preceding claims, characterized in that the securing arrangement (20) has a further securing element (31) made of heat-resistant material, in particular metal, which is arranged between the rod-bearing-side securing element (21) and the sleeve-side securing element (22) and / or between the spring element (16) and the collar (13), and in that the further securing element (31) is arranged in alignment with the sleeve-side securing element (22) in such a way that it is held in the axial direction on the rod (11) by the sleeve-side securing element (22) in the event of a failure of the movement assistance arrangement (3), in particular in the event of a fire, and secures the spring element (16) in the axial direction.Adjusting arrangement for a closure element (2) of a motor vehicle, having a movement assistance arrangement (3), wherein the movement assistance arrangement (3) has a first connection (4) and a second connection (5) for diverting, in particular linear, movements along a geometric diversion axis (6), wherein the adjusting arrangement (1) has a tube-like adjusting housing (7) having a housing inner tube (9) formed by a sleeve (8) and a housing outer tube (10) which, during an adjustment of the adjusting arrangement (1) between a retracted position and an extended position, merge telescopically into one another, wherein one of the two connections (4, 5) is respectively associated with the sleeve (8) and the housing outer tube (10), wherein the adjusting housing (7) provides an interior space in which the movement assistance arrangement (3) is at least partially arranged, wherein the movement support arrangement (3) has a rod (11) which is axially fixed with respect to the housing outer tube (10) and is surrounded by the housing outer tube (10), preferably over the entire axial extent thereof, wherein the rod (11) is assigned to the same connection (4) as the housing outer tube (10), characterized in that at least one outer guide element (29) which is axially fixed with respect to the sleeve (8) and is fixed in terms of pivoting extends from the sleeve (8) axially in the direction of the first connection (4) which is assigned to the housing outer tube (10) and on which the housing outer tube (10) is guided, preferably in that in the axial section of the movement support arrangement (3) in which the at least one outer guide element (29) extends, an axial spring end section (19) of the spring element (16) facing the sleeve (8) is guided on the rod (11).

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