Adjustment arrangement, in particular spindle drive

Abstract

The invention relates to an adjustment arrangement for adjusting an adjustment element (2) of a motor vehicle (3), wherein the adjustment arrangement (1) for coupling to the motor vehicle (3) has a connection (6) on the adjustment element side and a connection (7) on the body side, as well as a component strand (8) with two strand sections (10) that can be adjusted relative to one another between a retracted and an extended position, with a plurality of strand components (11) that are coupled to one another in a force-transmitting or torque-transmitting manner in order to transmit a force introduced into the connections (4, 5), wherein a spring arrangement (15) with a helical spring (16) is arranged coaxially to the geometric adjustment axis (9), which prestresses the two strand sections (10) relative to one another, wherein a spring guide tube (17) runs inside or outside the helical spring (16) to guide the helical spring (16).It is proposed that a stop arrangement (18) forming an axial stop for the helical spring (16) is arranged axially fixedly on the spring guide tube (17) and that the stop arrangement (18) has one or more radial projections (19) spaced apart from one another in the circumferential direction of the spring guide tube (17) for transmitting the spring force of the helical spring (16) to the spring guide tube (17).

Description

[0001] The present invention relates to an adjusting arrangement, in particular a spindle drive, according to the preamble of claim 1 and to a method for producing an adjusting arrangement according to the preamble of claim 13.

[0002] The adjustment arrangement in question can be assigned to any adjustment element of a motor vehicle. This includes tailgates, trunk lids, rear doors, side doors, or the like. In this respect, the term "adjustment element" is to be understood broadly in this context.

[0003] The known prior art (DE 10 2017 117 993 A1), from which the invention is based, relates to an adjustment arrangement in the form of a spindle drive for adjusting an adjustment element, in this case a tailgate, of a motor vehicle. For coupling to the motor vehicle, a connection is provided on the one hand on the adjustment element side and on the other hand on the body side. The adjustment arrangement comprises a component line with two line sections that are adjustable relative to one another along a geometric adjustment axis between a retracted position and an extended position, with several line components, including a drive motor, that are coupled to one another in a force- or torque-transmitting manner in order to transmit a force generated by the drive motor and introduced into the connections. One of the connections is assigned to each of the line sections.A spring assembly with a coil spring preloads the two strand sections against each other, making it easier to hold the tailgate open. A spring guide tube runs inside the coil spring to guide the coil spring.

[0004] While the familiar spindle drive has a relatively simple design, one challenge is that different vehicles inevitably place different demands on the spindle drive. For example, the weight and leverage of individual tailgates vary considerably. Therefore, it is necessary to develop a specific spindle drive for each installation situation, adapted to the specific conditions, which ultimately increases production costs.

[0005] The invention is based on the problem of designing and developing the known adjustment arrangement in such a way that it can be adapted to different installation situations as simply and cost-effectively as possible.

[0006] The above problem is solved by the features of the characterising part of claim 1.

[0007] The key consideration is that in order to adapt an adjustment arrangement, in particular a spindle drive, to different installation situations due to different tailgates, it is often sufficient to provide an adapted spring characteristic curve for the coil spring. For example, a flat spring characteristic curve is provided for SUVs or station wagons with a steep tailgate, and a steep spring characteristic curve for coupes. A steeper spring characteristic curve is often associated with a shorter spring length. It has been recognized that coil springs of different spring lengths can be used in otherwise largely identical adjustment arrangements if only an axial support adapted to the respective spring length is integrated for the different springs. This can be implemented particularly easily and cost-effectively by providing an axial stop for the coil spring on the spring guide tube, which is matched to the respective spring length.This allows for the provision of various spring guide tubes with axial stops positioned at different locations, which can be integrated into the adjustment arrangement according to the specific application. A corresponding stop can be implemented particularly cost-effectively using one or more radial projections spaced apart from one another in the circumferential direction of the spring guide tube.

[0008] In particular, it is proposed that a stop arrangement, which forms an axial stop for the helical spring, is arranged axially fixed on the spring guide tube and that the stop arrangement has one or more radial projections spaced apart from one another in the circumferential direction of the spring guide tube for transmitting the spring force of the helical spring to the spring guide tube.

[0009] Claim 2 concerns the use of webs as radial projections in the stop assembly. This allows the transmission of the spring force of the coil spring to the spring guide tube to be optimized. An axial alignment of the webs can support the force transmission in the desired direction.

[0010] Claims 3 and 4 specify the position of the axial spring stop surface of the stop arrangement on the spring guide tube.

[0011] Claim 5 defines particularly preferred possibilities for the attachment of the helical spring to the axial spring stop surface.

[0012] Particularly preferred alternatives for the design of the spring stop surface are specified in claim 6. The design of the spring stop surface by the radial projection(s) or axial web(s) themselves represents a particularly simple and cost-effective way of transmitting the spring force of the coil spring to the spring guide tube. The design of the spring stop surface by an additional stop plate has the advantage that the spring force of the coil spring is distributed over a larger area, resulting in increased force transmission capacity and improved load-bearing capacity of the adjustment assembly.

[0013] Claim 7 specifies particularly preferred embodiments of the unit comprising the spring guide tube and stop assembly. A one-piece design has the advantage that a spring guide tube with a stop assembly can be manufactured and assembled particularly easily.

[0014] Claim 8 defines a particularly preferred shape and orientation of the radial projection(s) with which a workpiece which forms the spring guide tube or from which the spring guide tube is formed can be particularly easily demolded in an injection molding process.

[0015] According to the particularly preferred embodiment according to claim 9, the adjustment arrangement has a housing with an inner housing tube and an outer housing tube, which increases the stability of the adjustment arrangement and the protection of the internal components.

[0016] Claim 10 specifies a particularly preferred possibility for adjusting the two strand sections, and thus the adjustment arrangement, between a retracted position and an extended position. A spindle-spindle nut gear allows for a particularly efficient and precise conversion of rotary movements into linear movements of the connections, especially in the case where a drive motor is provided (claim 11).

[0017] According to the particularly preferred embodiment according to claim 12, the spring guide tube is also designed to provide an anti-rotation lock for the spindle nut. This enables a more compact and efficient design of the adjustment assembly, as it eliminates the need for a separate component for the anti-rotation lock. By combining these two functions in a single part, the number of components can be reduced, resulting in a lower complexity and lower weight of the adjustment assembly.

[0018] According to a further teaching according to claim 13, which has independent significance, a method for producing an adjusting arrangement is claimed.

[0019] It is essential that an injection molding tool is provided with an upper injection mold and a lower injection mold, that the upper injection mold and the lower injection mold are brought together in a first direction so that a cavity is formed between the upper injection mold and the lower injection mold, the outer shape of which corresponds at least in sections to the outer shape of the spring guide tube with the stop arrangement arranged thereon, that a liquefied material, in particular a plastic, is injected into the cavity, that, after the injected material has changed into the solid state, the upper injection mold and the lower injection mold are moved away from each other in a demolding direction opposite to the first direction so that a workpiece, which later forms the spring guide tube with the stop arrangement arranged thereon, is demolded,and that the material is distributed in the cavity during its injection in such a way that, during demoulding, one or more of the projections of the stop arrangement extend in the demoulding direction and / or one or more of the projections of the stop arrangement extend orthogonally to the demoulding direction.

[0020] This represents a particularly simple method by which different spring guide tubes with axial stops placed at different positions can be provided, which can be integrated into the adjustment arrangement according to the respective application.

[0021] Reference may be made to all statements regarding the proposed adjustment arrangement.

[0022] Claims 14 and 15 specify the proposed method. It is particularly preferred if the upper and / or lower injection mold is composed of several separate mold blocks. This allows individual mold blocks to be individually exchanged in order to adapt the spring guide tube to be manufactured, with the stop arrangement arranged thereon, to different installation situations, especially to different spring lengths of the coil spring. In particular, this allows the position of the stop arrangement on the spring guide tube to be easily varied.

[0023] In the following, the invention is explained in more detail with reference to a drawing which merely represents exemplary embodiments. In the drawing, Fig. 1 the rear area of ​​a motor vehicle with a proposed adjustment arrangement, Fig. 2 the adjustment arrangement according to Fig. 1 each in a longitudinal section a) in the retracted state and b) in the extended state and Fig. 3 a spring guide tube of the adjustment arrangement according to Fig. 1 with stop arrangement arranged thereon for a helical spring during its production a) in perspective view after demoulding, b) in perspective view during demoulding and c) in sectional view during demoulding.

[0024] The Fig. 1 and Fig. The proposed adjustment arrangement 1 shown in Figure 2, which is designed here as a drive, here and preferably as a spindle drive, serves for the adjustment, here the motorized adjustment, of an adjustment element 2 in the form of a flap of a motor vehicle 3. The flap is adjustable in the opening direction and / or in the closing direction of the flap by means of the adjustment arrangement 1 or at least with its support.

[0025] The flap here is and preferably, as Fig. 1 shows a tailgate of the motor vehicle 3. The "tailgate" application is particularly advantageous for the proposed adjustment arrangement 1, since the installation space available there can be particularly well utilized with the proposed adjustment arrangement 1. In principle, however, the proposed adjustment arrangement 1 can also be applied to other types of adjustment elements 2 of a motor vehicle 3. These include trunk lids, front hoods, doors, in particular side or rear doors, or the like. Sliding doors can also be adjusted at least over an adjustment range using the proposed adjustment arrangement 1, in particular by motor means.

[0026] The adjustment arrangement 1 here and preferably has a motor drive unit 4, i.e. a drive unit 4 with a drive motor 5. In principle, however, a motor drive unit 4 can also be dispensed with with the same structure described below. Here and preferably, two adjustment assemblies 1 are assigned to the flap, each of which engages on opposite sides of the motor vehicle trunk, one being equipped with a motor drive unit 4 (so-called "active side") and the other being motorless (so-called "passive side"). In principle, however, the flap can also be assigned only a single adjustment arrangement 1, preferably with a motor drive unit 4.

[0027] The adjustment arrangement 1 has a connection 6 on the adjustment element side, i.e. a connection for coupling the adjustment arrangement 1 to the adjustment element 2, and a body-side connection 7, i.e. a connection for coupling the adjustment arrangement 1 to the body of the motor vehicle 3.

[0028] Furthermore, the adjustment arrangement 1 has a component string 8 with two string sections 10, which are adjustable relative to one another, in particular linearly, along a geometric adjustment axis 9 between a retracted position and an extended position and have a plurality of string components 11. The string components 11 are coupled to one another in a force-transmitting or, as here, torque-transmitting manner, in order to transmit a force introduced into the connections 4, 5 from the outside or a torque generated by the drive motor 5. Each of the two string sections 10 is assigned one of the connections 4, 5, so that the respective connection moves together with the string section 10, i.e., follows its movement, when the string sections 10 are adjusted relative to one another.

[0029] Here and preferably, the drive motor 5 and an optional intermediate gear 12 of the drive unit 4 as well as the gear components of a feed gear described below, here a spindle 13 and a spindle nut 14 meshing therewith, are arranged in the component string 8 as string components 11. Here and preferably, the drive motor 5 and the optional intermediate gear 12 as well as the spindle 13 are assigned to one string section 10, here the string section 10 assigned to the adjustment element-side connection 6, and the spindle nut 14 is assigned to the other string section 10, here the string section 10 assigned to the body-side connection 7.

[0030] The two connections 4, 5 are adjustable relative to one another along the geometric adjustment axis 9, here linearly, in a first adjustment direction, which corresponds in particular to an opening of the flap, and in an opposite, second adjustment direction, which corresponds in particular to a closing of the flap.

[0031] As the Fig. 2a) and b), the adjustment arrangement 1 has a spring arrangement 15 with a helical spring 16 arranged coaxially to the geometric adjustment axis 9, here and preferably a helical compression spring, which prestresses the strand sections 10 relative to one another, here in the extended position.

[0032] To guide the helical spring 16, a spring guide tube 17 runs inside the helical spring 16. According to another embodiment, not shown here, an arrangement is also conceivable in which the spring guide tube 17 runs outside the helical spring 16. The spring guide tube 17 is axially fixed, in particular at one of its axial ends, to one of the strand sections 10, here the strand section 10 assigned to the connection 6 on the adjustment element side. When the two strand sections 10 are adjusted between the retracted position and the extended position, the helical spring 16 is in radial contact with the spring guide tube 17 via individual or all spring coils and slides along it in sections.

[0033] In this context, the terms “axial” and “radial” always refer to the geometric adjustment axis 9.

[0034] The embodiment shown in the figures and thus preferred relates accordingly to an adjustment arrangement 1, in particular a spindle drive, for adjusting an adjustment element 2, in particular a flap, of a motor vehicle 3, wherein the adjustment arrangement 1 has a connection 6 on the adjustment element side and a connection 7 on the body side for coupling to the motor vehicle 3, wherein the adjustment arrangement 1 has a component strand 8 with two strand sections 10 that are adjustable relative to one another, in particular linearly, along a geometric adjustment axis 9 between a retracted position and an extended position, with a plurality of strand components 11 that are coupled to one another in a force- or torque-transmitting manner in order to transmit a force introduced into the connections 4, 5 (introduced from the outside or generated by the drive motor 5), wherein each of the strand sections 10 is assigned one of the connections 4, 5,wherein a spring arrangement 15 with a helical spring 16, in particular a helical compression spring, is arranged coaxially to the geometric adjustment axis 9, which prestresses the two strand sections 10 against each other, wherein a spring guide tube 17 runs inside or outside the helical spring 16 to guide the helical spring 16.

[0035] It is now essential that a stop arrangement 18, which forms an axial stop for the helical spring 16, is arranged axially fixed on the spring guide tube 17 and that the stop arrangement 18 has one or more radial projections 19 spaced apart from one another in the circumferential direction of the spring guide tube 17 for transmitting the spring force of the helical spring 16 to the spring guide tube 17.

[0036] The stop arrangement 18 can be arranged radially inward or outward, namely on the radial side where the coil spring 16 extends. The radial projections 19 protrude radially from the spring guide tube 17, or rather its cylindrical outer side, to such an extent that they extend into the radial space occupied by the coil spring 16, thereby achieving optimal axial support.

[0037] The “circumferential direction” of the spring guide tube 17 is the direction in which the spring guide tube 17 extends around the geometric adjustment axis 9 in the assembled state.

[0038] Further here and preferably, as in Fig. 3a), it is provided that the radial projection(s) 19 are each designed as webs 20, in particular axially extending webs 20.

[0039] In this context, webs 20 are elongated projections 19, i.e., projections 19 that have a greater extension in one direction along the spring guide tube 17 than in another direction along the spring guide tube 17. Axially extending webs 20 accordingly have a greater extension in a direction parallel to the spring guide tube 17 than in the circumferential direction of the spring guide tube 17.

[0040] The stop arrangement 18 here and preferably has an axial spring stop surface 21 for introducing the spring force of the helical spring 16 into the stop arrangement 18 (upper enlarged detail view of Fig. 2a), Fig. 3a)). The spring stop surface 21 is axially spaced from both axial ends of the spring guide tube 17.

[0041] Here and preferably, the axial distance of the spring stop surface 21 to that end of the spring guide tube 17 is fixed to one of the strand sections 10 is smaller than the axial distance of the spring stop surface 21 to the other end of the spring guide tube. It is particularly preferred that the axial distance of the spring stop surface 21 to that end of the spring guide tube 17 is fixed to one of the strand sections 10 is at least 1 / 10, preferably at least 1 / 8, more preferably at least 1 / 6, of the total axial length of the spring guide tube 17. In the embodiment shown, as shown in Fig. 3a), the axial distance of the spring stop surface 21 to the said end is more than 1 / 4, even more than 1 / 3, of the total axial length of the spring guide tube 17.

[0042] The upper enlarged detail view of Fig. 2a) shows that in the embodiment illustrated here and thus preferred, the helical spring 16, in the assembled state, bears against the axial spring stop surface 21 with one of its axial spring ends 22, i.e., with the last of the spring coils. In principle, however, the helical spring 16 can also be arranged differently, in particular such that, in the assembled state, it bears against the axial spring stop surface 21 with a spring coil spaced from the axial spring end. In the latter case, the helical spring 16 is then not supported axially, or at least not exclusively, with its last spring coil 23.

[0043] The spring stop surface 21 can be formed in different ways. In the simplest case, the spring stop surface 21 can be formed by the radial projection(s) 19, here the axially extending webs 20. The coil spring 16 then lies axially directly against the projections 19 or webs 20. Here and preferably, however, as shown in the upper enlarged detail view of Fig. 2a) and in Fig. 3a), it is provided that the stop arrangement 18 has a partially or, as here, completely circumferential stop plate 24, which forms the spring stop surface 21 with its one axial side and is connected with its other axial side to the radial projection(s) 19, here the axially extending webs 20.

[0044] In this context, the term “circumferential” always refers to the circumferential direction of the spring guide tube 17.

[0045] The projection(s) 19 or here the axially extending webs 20 thus extend, starting from the stop plate 24, axially away from the helical spring 16, as the upper enlarged detail view of Fig. 2a). The stop plate 24 protrudes radially relative to the spring guide tube 17, or rather, its cylindrical outer side, to such an extent that it extends into the radial space occupied by the coil spring 16. This achieves optimal axial support.

[0046] Furthermore, according to the illustrated embodiment, it is preferably provided that the radial projection(s) 19, here the axially extending webs 20, and / or the stop plate 24, in particular the stop arrangement 18 as a whole, is or are formed integrally with the spring guide tube 17, which allows for particularly simple production, in particular by injection molding. In principle, however, it is also conceivable alternatively that the radial projection(s) 19 and / or the stop plate 24, in particular the stop arrangement 18 as a whole, is or are axially fixed to the spring guide tube 17 by means of a material, form, and / or friction fit.

[0047] In particular, for optimal demoldability of the injection-molded workpiece 25, which forms or is intended to form the spring guide tube 17, it is preferably provided here that the circumferentially facing side surfaces 26 of two adjacent projections 19, here the axially extending webs 20, are parallel to one another, and / or that the circumferentially facing side surfaces 26 of two adjacent projections 19, here the axially extending webs 20, are orthogonal to one another.

[0048] However, it is also conceivable in principle for a shape in which the circumferentially facing side surfaces 26 of two adjacent projections 19, here the axially extending webs 20, are inclined to one another.

[0049] In the embodiment shown here and preferred in this respect, a housing 27 with an inner housing tube 28 and an outer housing tube 29 is also provided. The inner housing tube 28 runs, as Fig. 2, telescopically within the housing outer tube 29. The housing inner tube 28 is connected to one of the two strand sections 10, and the housing outer tube 29 is connected to the other of the two strand sections 10. Here, and preferably, the spring arrangement 15 is arranged within the housing 27, in particular the housing inner tube 28 and / or the housing outer tube 29.

[0050] Furthermore, as already indicated and in Fig. 2, here and preferably the adjustment arrangement 1, downstream of the drive unit 4, has a feed gear for executing linear movements along the geometric adjustment axis 9. The feed gear here is a spindle-spindle nut gear 30 with a spindle 13 and a spindle nut 14 meshing therewith in the conventional manner. One of the two strand sections 10 has the spindle 13 and the other of the two strand sections 10 has the spindle nut 14. The adjustment arrangement 1 is accordingly designed here as a spindle drive.

[0051] The spindle nut 14 is connected, in a conventional manner, to a spindle guide tube in a rotationally and axially fixed manner, in which the spindle 13 is linearly guided. As an alternative to a spindle-spindle nut gear 30, other types of gears are also conceivable as feed gears, for example, a pushrod gear.

[0052] The body-side connection 7 here pivotably connects the spindle nut 14 to the flap via the spindle guide tube, while the adjusting element-side connection 6 otherwise pivotably connects the drive unit 4, in particular via a gear housing, to the motor vehicle 3.

[0053] Furthermore, here and preferably, as already indicated and in Fig. 2, one of the two strand sections 10 has a drive unit 4 with a drive motor 5, followed by the feed gear. Here, and preferably, the spindle 13 is driven by the drive motor 5, in particular via an intermediate gear 12, e.g., a planetary gear.

[0054] Furthermore, it is preferably provided here that the spring guide tube 17 is a multifunctional part which, in addition to its function of guiding the helical spring 16, provides an anti-twist device for the spindle nut 14 as a further function.

[0055] According to a further teaching, a method for producing an adjustment arrangement 1 according to the proposal is proposed.

[0056] What is essential according to this further teaching is that an injection molding tool 31 is provided with an upper injection mold 32 and a lower injection mold 33, that the upper injection mold and the lower injection mold are brought together in a first direction so that a cavity 34 is formed between the upper injection mold 32 and the lower injection mold 33, the outer shape of which corresponds at least in sections to the outer shape of the spring guide tube 17 with the stop arrangement 18 arranged thereon, that a liquefied material 35, in particular a plastic, is injected into the cavity 34, that after the injected material 35 has changed into the solid state, the upper injection mold and the lower injection mold are moved away from each other in a demolding direction opposite to the first direction, so that a workpiece 25, which later, if appropriate after a subsequent, in particular machining,Processing, which forms the spring guide tube 17 with the stop arrangement 18 arranged thereon, is demolded, and that the material 35 is distributed in the cavity 34 during its injection such that during demolding one or more of the projections 19 of the stop arrangement 18 extend in the demolding direction and / or one or more of the projections 19 of the stop arrangement 18 extend orthogonally to the demolding direction.

[0057] Reference may be made to all statements relating to the proposed adjustment arrangement 1.

[0058] The method enables the particularly simple production and provision of a large number of different spring guide tubes 17 with axial stops positioned at different positions. From these various spring guide tubes 17 with differently positioned stops, one can then be selected and integrated into the adjustment arrangement 1, which corresponds to the respective application. For example, for the application of an SUV or station wagon, in which a coil spring 16 with a flat spring characteristic and correspondingly longer axial spring length is required due to a steep tailgate, a spring guide tube 17 can be selected to which the stop orthe axial spring stop surface 21 is arranged further towards one end of the coil spring 16 than in the application of a coupé, in which a coil spring 16 with a steep spring characteristic and a correspondingly smaller axial spring length is required due to a flat tailgate.

[0059] Further shows Fig. 3b), that in the course of forming the cavity 34, an elongated injection molding core 36 is preferably provided between the upper injection mold 32 and the lower injection mold 33. The injection molding core 36 has an outer shape that corresponds at least in sections to the inner shape of the spring guide tube 17 in the demolded state and, in particular, forms axial grooves 37 inside the guide tube to prevent rotation of the spindle nut 14.

[0060] The upper injection mold and / or the lower injection mold may also each be formed as shown in Fig.3b) and c), be composed of several separate mold blocks 38 along the future spring guide tube 17. Of the mold blocks of the upper injection mold 32 or of the mold blocks of the lower injection mold 33, at least one mold block 38 then forms, during the injection of the material 35 into the cavity 34, a circumferential section of the spring guide tube 17 of a first defined axial length, axially adjacent to the stop arrangement 18 in the demolded state.

[0061] This mold block 38 can, if necessary, particularly if a spring guide tube 17 is to be manufactured with a stop positioned at a different position, be used instead of another mold block 38 used in a previous injection molding process. Thus, it can be provided that, before the upper injection mold 32 and the lower injection mold 33 are brought together, the at least one mold block 38 is provided in exchange for another (previous) mold block 38, which was previously used during the injection of the material 35 into the cavity 34 to form a circumferential section of the spring guide tube 17, axially adjacent to the stop arrangement 18 in the demolded state, having a second defined axial length different from the first defined axial length. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2017 117 993 A1

[0003]

Claims

[1] Adjustment arrangement, in particular spindle drive, for adjusting an adjustment element (2), in particular a flap, of a motor vehicle (3), wherein the adjustment arrangement (1) has a connection (6) on the adjustment element side and a connection (7) on the body side for coupling with the motor vehicle (3), wherein the adjustment arrangement (1) comprises a component string (8) with two string sections (10) adjustable to each other along a geometric adjustment axis (9) between a retracted position and an extended position, in particular linearly, with several string components (11) which are coupled to each other in a force- or torque-transmitting manner in order to transmit a force introduced into the connections (4, 5), wherein each of the string sections (10) is assigned one of the connections (4, 5), wherein a spring arrangement (15) with a helical spring (16), in particular a helical compression spring, is arranged coaxially to the geometric adjustment axis (9), which preloads the two strand sections (10) against each other, wherein a spring guide tube (17) runs inside or outside the helical spring (16) to guide the helical spring (16), characterized by , that a stop arrangement (18) which forms an axial stop for the coil spring (16) is arranged axially fixed to the spring guide tube (17) and that the stop arrangement (18) has one or more radial projections (19) spaced apart from each other in the circumferential direction of the spring guide tube (17) for transmitting the spring force of the coil spring (16) to the spring guide tube (17). [2] Adjustment arrangement according to claim 1, characterized by , that the radial projection(s) (19) are each designed as webs (20), in particular axially extending webs (20). [3] Adjustment arrangement according to claim 1 or 2, characterized by , that the stop arrangement (18) has an axial spring stop surface (21) for introducing the spring force of the coil spring (16) into the stop arrangement (18) and that the spring stop surface (21) is axially spaced from both axial ends of the spring guide tube (17). [4] Adjustment arrangement according to one of the preceding claims, characterized by, that the axial distance of the spring stop surface (21) to that end of its spring guide tube (17) where it is fixed to one of the strand sections (10) is less than the axial distance of the spring stop surface (21) to the other end of its spring section, and / or that the axial distance of the spring stop surface (21) to that end of its spring guide tube (17) where it is fixed to one of the strand sections (10) is at least 1 / 10, preferably at least 1 / 8, more preferably at least 1 / 6, of the total axial length of the spring guide tube (17). [5] Adjustment arrangement according to one of the preceding claims, characterized by , that the coil spring (16) in the assembled state rests against the axial spring stop surface (21) with one of its axial spring ends (22) or with a spring coil spaced apart from the axial spring end. [6] Adjustment arrangement according to one of the preceding claims, characterized by, that the spring stop surface (21) is formed by the radial projections (19) (here the axially extending webs (20)), or that the stop arrangement (18) has a partially or completely circumferential stop plate (24) which forms the spring stop surface (21) with one axial side and is connected to the radial projections (19) with its other axial side. [7] Adjustment arrangement according to one of the preceding claims, characterized by , that the radial projection(s) (19) and / or the stop plate (24), in particular the stop arrangement (18) as a whole, is or are formed integrally with the spring guide tube (17), or that the radial projection(s) (19) and / or the stop plate (24), in particular the stop arrangement (18) as a whole, is or are axially fixed to the spring guide tube (17) by material, form and / or friction fit. [8] Adjustment arrangement according to one of the preceding claims, characterized by , that the circumferentially facing side surfaces (26) of two adjacent projections (19) are parallel to each other, and / or that the circumferentially facing side surfaces (26) of two adjacent projections (19) are orthogonal to each other, and / or that the circumferentially facing side surfaces (26) of two adjacent projections (19) are oblique to each other. [9] Adjustment arrangement according to one of the preceding claims, characterized by, that a housing (27) is provided with an inner housing tube (28) and an outer housing tube (29), that the inner housing tube (28) runs telescopically in the outer housing tube (29), and that the inner housing tube (28) is connected to one of the two strand sections (10) and the outer housing tube (29) is connected to the other of the two strand sections (10), preferably that the spring arrangement (15) is arranged inside the housing (27), in particular the inner housing tube (28) and / or outer housing tube (29). [10] Adjustment arrangement according to one of the preceding claims, characterized by, that the adjustment arrangement (1) has a feed mechanism for performing linear movements along the geometric adjustment axis (9), preferably that the feed mechanism is a spindle-spindle nut mechanism (30) with a spindle (13) and a meshing spindle nut (14) and that one of the two strand sections (10) has the spindle (13) and the other of the two strand sections (10) has the spindle nut (14). [11] Adjustment arrangement according to one of the preceding claims, characterized by that one of the two strand sections (10) has a drive unit (4) with a drive motor (5) to which the feed gearbox is connected, preferably that the spindle (13) is driven by the drive motor (5), in particular via an intermediate gearbox (12). [12] Adjustment arrangement according to one of the preceding claims, characterized by, that the spring guide tube (17) is a multifunctional part which, in addition to its function of guiding the coil spring (16), also provides an anti-rotation device for the spindle nut (14). [13] Method for manufacturing an adjustment arrangement (1) according to any one of the preceding claims, characterized by , that an injection mold (31) is provided with an upper injection mold (32) and a lower injection mold (33), that the upper injection mold and the lower injection mold are brought together towards each other in a first direction, so that a cavity (34) is formed between the upper injection mold (32) and the lower injection mold (33), the outer shape of which corresponds at least partially to the outer shape of the spring guide tube (17) with the stop arrangement (18) attached thereto, that a liquefied material (35), in particular a plastic, is injected into the cavity (34), that, after the injected material (35) has solidified, the upper injection mold and the lower injection mold are moved away from each other in a demolding direction opposite to the first direction, so that a workpiece (25), which later forms the spring guide tube (17) with the stop arrangement (18) attached to it, is demolded, and that the material (35) is distributed in the cavity (34) during its injection such that, during demolding, one or more of the projections (19) of the stop arrangement (18) extend in the demolding direction and / or one or more of the projections (19) of the stop arrangement (18) extend orthogonally to the demolding direction. [14] Method according to claim 13, characterized by, that in the course of forming the cavity (34) an elongated injection molding core (36) is provided between the upper injection mold (32) and the lower injection mold (33), the outer shape of which corresponds at least partially to the inner shape of the spring guide tube (17) in the demolded state and in particular forms axial grooves (37) inside the guide tube to prevent rotation of the spindle nut (14). [15] Method according to claim 13 or 14, characterized by, that the upper injection mold and / or the lower injection mold is each composed of several separate mold blocks (38) along the future spring guide tube (17), of which at least one mold block (38) forms, during the injection of the material (35) into the cavity (34), a circumferential section of the spring guide tube (17) of a first defined axial length which, in the demolded state, is axially adjacent to the stop arrangement (18), preferably, that before the joining of the upper injection mold (32) and the lower injection mold (33), the at least one mold block (38) is provided in exchange for another mold block (38) which, during the injection of the material (35) into the cavity (34), forms, in the demolded state, a circumferential section of the spring guide tube (17) of a second defined axial length which, in the demolded state, is axially adjacent to the stop arrangement (18), is provided.

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