Adjusting assembly for closure element of motor vehicle having body

Abstract

The invention relates to an adjustment arrangement for a closure element (2) of a motor vehicle (3) having a vehicle body (4), the adjustment arrangement (1) having two housing parts (6, 7) that can be stretched relative to each other, each having a connecting piece (8) for connecting the adjustment arrangement (1) to the closure element (2) and to the vehicle body (4), the adjustment assembly (1) comprises a spindle (9), a spindle nut tube (10) and a spindle nut (11) arranged on the spindle nut tube (10), the spindle nut tube (10) being rotatably movably arranged on the first housing part (6) and the spindle (9) being fixedly arranged on the second housing part (7), the spindle (9) and the spindle nut (11) engaging with each other by a threaded connection (12), the spindle nut tube (10) is arranged such that the spindle nut (11) is moved along the spindle (9) during a rotational movement of the spindle nut tube (10), whereby the housing parts (6, 7) telescope relative to each other, and wherein the adjustment assembly (1) has a pre-tensioning assembly (13) for pre-tensioning the connectors (8) relative to each other. According to the invention, the preload arrangement (13) has a torsion spring (14), and the torsion spring (14) preloads the spindle nut tube (10) with the spindle nut (11) in the rotational direction.

Description

[0001] The present invention relates to an adjustment assembly for a sealing element of a motor vehicle having a body, as described in the preamble of claim 1, and a sealing element assembly as described in claim 14.

[0002] The adjustment components discussed can be assigned to different types of closing elements of a motor vehicle. In this context, the term "closing element" should be interpreted broadly, including, for example, tailgates, front doors, side doors, etc. The adjustment components can be arranged on the respective closing elements and, for example, allow automatic adjustment of the closing elements and / or assist manual adjustment of the closing elements. For example, it is conceivable that the adjustment component adjusts the closing element itself to an open position and / or a closed position. It is also conceivable that the adjustment component holds the closing element in the open position and / or that the adjustment component brakes or assists in manual adjustment of the closing element.

[0003] The prior art upon which this invention is based (DE10 2004 040 170A1) relates to an adjustment assembly configured herein as a main shaft actuator for automatically adjusting a tailgate. The adjustment assembly has two housing portions that are telescoping relative to each other and forming a housing. Each housing portion has a connector by which the adjustment assembly can be correspondingly connected to the tailgate and body of a motor vehicle. Within the housing are arranged a main shaft, a main shaft nut tube, and a main shaft nut disposed on the main shaft nut tube, wherein the main shaft nut tube is rotatably disposed on a first housing portion, and the main shaft is fixedly disposed on a second housing portion. The main shaft and the main shaft nut are engaged with each other by a threaded connection, such that the main shaft nut can move axially along the main shaft during rotational movement of the main shaft nut tube. Thus, the housing portions can telescop relative to each other, resulting in the connectors arranged on the housing portions moving together, and the tailgate ultimately adjusting relative to the vehicle body.

[0004] Known adjusting components have a pre-tensioning assembly with a helical compression spring. The pre-tensioning assembly pre-tensions the connecting parts or housing portions relative to each other, particularly in this case, so that the adjusting assembly is pre-tensioned in the extended direction. Therefore, for example, it can assist the opening operation of the tailgate, resulting in the tailgate's adjustment from the closed position to the open position occurring with relatively little force, which must be manually adjusted by the user or automatically adjusted by the drive motor. Due to the pre-tensioning, the tailgate can also be held in the open position. To this extent, the pre-tensioning assembly generally improves the adjustment of the closing element and the adjusting assembly.

[0005] While known adjustment assemblies have proven well-suited for a variety of applications, a certain challenge in their design, considering the preload assembly, lies in designing the adjustment assembly as a whole in a way that ensures reliable operation. Due to conditions (e.g., tailgate weight, leverage ratio, etc.), it is necessary to apply a relatively large preload force through the preload assembly in known adjustment assemblies. In this case, the preload force is essentially applied by a helical compression spring, which is why the helical compression spring, especially in the retracted state of the adjustment assembly, stores a considerable amount of energy. In the event of a defect or damage to the adjustment assembly, such as during a fire or accident, there is a risk that this stored energy may be suddenly released, and the helical compression spring and / or other components of the adjustment assembly may "ball-like" fly uncontrollably around.

[0006] In this context, the present invention is based on the problem of designing and improving known adjustment components in such a way that the operational reliability of the adjustment components is, in particular, concerned with the potential dangers caused by the preload components.

[0007] This objective is achieved by the features of the feature portion of claim 1.

[0008] A crucial consideration is that the preload of the connectors relative to each other is achieved, at least in part, by the torsion spring of the preload assembly. The torsion spring preloads the spindle nut tube together with the spindle nut in the rotational direction, which ultimately results in the connectors being preloaded relative to each other in the axial direction. Compared to the compression springs provided in prior art adjustment assemblies, the torsion spring, due to its different direction of action, reduces potential hazards. Therefore, in the event of defects or damage, uncontrolled projectile-like flight of the torsion spring and / or other components of the adjustment assembly can be avoided.

[0009] Specifically, a preload assembly is proposed, comprising a torsion spring, wherein the torsion spring is preloaded in the rotational direction by the spindle nut tube.

[0010] According to claim 2, it can be advantageously provided that the adjusting assembly is adjustable to a retracted state and an extended state, and the connecting member is pre-tensioned by a pre-tensioning assembly, particularly by a torsion spring, in the direction of the retracted state or the direction of the extended state. According to the design, the adjusting assembly can be used in motor vehicles, wherein the adjusting assembly is adjusted to the retracted state during the opening of the closing element, and also in motor vehicles, wherein the adjusting assembly is adjusted to the extended state during the opening of the closing element.

[0011] The particularly advantageous design according to claim 3 provides that the pre-tightening assembly pre-tightens the connecting member relative to each other in both the retracted and extended states, i.e., generating corresponding pre-tightening forces in both states. In this way, different functions of the adjusting assembly can be achieved. For example, starting from one state, particularly the retracted state, the opening process of the closing element can initially be achieved and / or assisted by the adjusting assembly, and in another state, particularly the extended state, the closing element can be held in the open position by the adjusting assembly. If the pre-tightening assembly is designed such that the applied pre-tightening force is sufficient to hold the closing element in the open position, additional components, such as a retaining brake, can be omitted.

[0012] Claim 4 relates to an advantageous design that further improves operational reliability. A support assembly with two support points spaced apart from each other in the axial direction allows the adjusting assembly to absorb greater support forces, thereby improving the overall support characteristics of the adjusting assembly. The support assembly with two support elements can be designed to be simple in structure and functionally identical. To further improve the support characteristics of the adjusting assembly, thereby increasing operational reliability, one or both support elements can be constructed in such a way that they can absorb radial forces that may act on the support elements starting from the spindle nut tube.

[0013] Claim 5 relates to an advantageous design in which one of the support elements has several functions to keep the number of parts in the adjusting assembly relatively small. Thus, in addition to supporting the spindle nut tube, one of the support elements can also provide a seal, for example, a housing chamber arranged within the first housing portion, and / or a damping device, such as a rotatably movable spindle nut tube. A torsion spring can advantageously be arranged protectively within the housing chamber to reduce the risk of its failure (e.g., due to dirt, moisture, aging), thereby increasing the overall operational reliability of the adjusting assembly.

[0014] Claims 6 to 11 relate to advantageous designs of adjustment components, which relate to the design and arrangement of torsion springs.

[0015] The advantageous design according to claim 6 provides that the torsion spring has two spring connectors. Through these spring connectors, the torsion spring can be connected to the first housing portion and the main shaft nut tube with a simple structure and the same function.

[0016] According to claim 7, the adjusting assembly advantageously has an intermediate gear through which the torsion spring is connected to the first housing portion or the main shaft nut tube. The rotational movement of the main shaft nut tube can be converted into rotational movement to tension or release the torsion spring via the intermediate gear. In particular, the intermediate gear can be configured such that the speed of rotational movement of the main shaft nut tube is reduced towards the torsion spring via the intermediate gear.

[0017] According to claim 8, the spring connector is advantageously arranged on opposite sides or the same side of the torsion spring. Therefore, the utilization of structural space can be improved, particularly regarding the arrangement of the torsion spring. It is also conceivable that by arranging the spring connector on the same side of the torsion spring, the torsion spring is constructed as a double spring, thereby achieving an improved preload.

[0018] Another advantageous design according to claim 9 provides a connection in which one or both of the spring connectors are shaped to engage with the first housing portion or the spindle nut tube, which is structurally easy to achieve and functionally equally reliable.

[0019] Claim 52 relates to an advantageous design in which the torsion spring can be supported by the spindle nut tube and / or the first housing portion, thereby preventing any bending or misalignment of the torsion spring.

[0020] Claim 11 relates to an advantageous design of an adjustment assembly having a torsion spring that is simple in structure and equally reliable in function.

[0021] Another advantageous design according to claim 12 provides that the preload assembly has another torsion spring, which, in addition to the torsion spring, also preloads the spindle nut tube in the rotational direction using the spindle nut. The torsion spring and the other torsion spring can together form a spring system whose preload force can be designed in an improved manner. Furthermore, it is conceivable that a certain degree of redundancy can be created through the other torsion spring.

[0022] Claim 13 relates to another advantageous design in relation to the preload assembly. As an alternative to or supplement to a torsion spring and optionally another torsion spring, one or more preload elements, such as one or more compression springs, can be provided. It is conceivable that the one or more preload elements further improve the adjustment of the adjusting assembly, particularly since the opening movement, starting from the retracted state, is initially assisted by an additional applied preload force.

[0023] According to another teaching of claim 14, which has independent significance, protection is claimed for a closed element assembly having a closed element and a regulating assembly according to any one of the preceding claims.

[0024] Please refer to all statements regarding the proposed adjustment components.

[0025] The invention will be explained in more detail below with reference to the accompanying drawings, which illustrate embodiments only. In the drawings:

[0026] Figure 1 A partial cross-sectional side view of the adjustment assembly according to the invention, respectively assigned to active design scheme a) and passive design scheme b) of a motor vehicle, is shown.

[0027] Figure 2 It shows according to Figure 1 a) An enlarged partial sectional view of the adjustment component of the present invention in the retracted state and b) a corresponding cross-sectional side view in the extended state.

[0028] Figure 3 A cross-sectional side view, an enlarged partial sectional view, and a cross-sectional view of another active design embodiment of the adjustment assembly according to the invention in its retracted state are shown; and

[0029] Figure 4 Different embodiments of the torsion spring for the adjusting assembly according to the invention are shown in a) to d).

[0030] Figure 1 a), 2a), and 2b) illustrate preferred embodiments of the adjustment assembly 1 for the sealing element 2 of a motor vehicle 3 having a body 4. Figure 1 In a), the adjusting assembly 1 (and the closing element 2) are assigned to the closing element assembly 5 according to the invention, which will be discussed further below. As previously stated, the term "closing element" must be interpreted broadly. In this case, preferably, the closing element 2 is configured as a tailgate. Here and preferably, the adjusting assembly 1 is configured as a spindle drive. Figure 1 b) and 3 respectively illustrate another preferred embodiment of the adjustment component 1.

[0031] Figure 1 a), 2a), and 2b) and Figure 3 The adjustment component 1 shown is preferably designed to be active. This means that the closing element 2 can be automatically adjusted to the open and / or closed position by the adjustment component 1. Figure 1 The adjusting component 1 shown in b) is preferably designed to be passive. This means that the adjusting component 1 is configured without a drive motor. With this adjusting component 1, the adjustment of the closing element 2 can be assisted, for example, by braking and / or auxiliary movement, either manually or by another actively configured adjusting component 1. The adjusting component 1 can also allow or assist in holding the closing element 2 in the open position.

[0032] generally, Figure 1 The embodiments of the regulating component 1 in a), 2a), 2b), and 3 and 1b) are substantially the same in structure, which is why the following statements (unless otherwise stated) refer in principle to both actively and passively configured regulating components 1.

[0033] Typically, the adjusting assembly 1 can be adjusted to a retracted state and an extended state. The adjusting assembly 1 has two retractable housing parts 6 and 7 relative to each other, namely a first housing part 6 and a second housing part 7. In this case, "retractable" means that the housing parts 6 and 7 can extend or retract relative to each other. Figure 2a)) and separate ( Figure 2 b)) Movement, thereby adjusting component 1 to a retracted state and an extended state. As shown here, housing portions 6 and 7 can form a housing in which at least some components of adjusting component 1 are protected from external influences.

[0034] In each case, the connector 8 is arranged on the housing portions 6 and 7. In each case, the connector 8 can be surrounded by one of the housing portions 6 and 7. The adjusting assembly 1 can be connected to the closing element 2 via one of the connectors 8, and the adjusting assembly 1 can be connected to the body 4 of the motor vehicle 3 via the other connector 8. Figure 1 a)). In this case, and preferably, with the adjusting component 1 in the extended state, the connecting parts 8 are spaced apart from each other, so that the closing element 2 can be adjusted or adjusted to the open position (a)). Figure 1 a)) In the retracted state of the adjusting assembly 1, the connecting pieces 8 are spaced apart, allowing the closing element 2 to be adjusted or moved to the closed position, such as when the tailgate closes the trunk. When the housing parts 6 and 7 extend or retract, the connecting pieces 8 move accordingly with the housing parts 6 and 7. Alternatively, it can also be imagined that in the extended state, the connecting pieces 8 are spaced apart, allowing the closing element 2 to be adjusted to the closed position. In the retracted state, the connecting pieces 8 are spaced apart, allowing the closing element 2 to move to the open position. This can be achieved using a lever assembly.

[0035] The adjusting assembly 1 also includes a spindle 9, a spindle nut tube 10, and a spindle nut 11 disposed on the spindle nut tube 10. The spindle nut 11 is torsionally mounted on the spindle nut tube 10. This can be achieved by clamping, bonding, welding, and / or screwing the spindle nut 11 onto the spindle nut tube 10. The spindle nut 11 may also be molded onto the spindle nut tube 10. The spindle nut tube 10 is torsionally mounted on the first housing portion 6, either indirectly or directly. Figure 2 a)). To this extent, the spindle nut tube 10 can be rotatably moved relative to the first housing portion 6. The spindle nut tube 10 is preferably arranged in the first housing portion 6. The spindle 9 is fixedly, particularly torsionalally, indirectly or directly arranged on the second housing portion 7. Figure 2 a)). The main shaft 9 is preferably arranged in the second housing portion 7.

[0036] The spindle 9 and spindle nut 11 are engaged with each other by a threaded connection 12, such that the spindle nut 11 moves along the spindle 9 during the rotational movement of the spindle nut tube 10. Here, and preferably, the spindle 9 has an external thread, and the spindle nut 11 has an internal thread, forming the threaded connection 12. The spindle nut 11 can move along the spindle 9, particularly in the axial direction, especially relative to the longitudinal axis of the spindle 9. To enable the spindle nut 11 to move stably along the spindle 9, the external thread of the spindle 9 is preferably constructed to be longer than the internal thread of the spindle nut 11. This also provides manufacturing advantages. Preferably, the ratio of the external thread length to the internal thread length is at least 2:1, more preferably 3:1, more preferably 5:1, and even more preferably 10:1. As shown here, in addition to the externally threaded portion, the spindle 9 may also have a threadless portion.

[0037] The movement of the spindle nut 11 along the spindle 9 causes the housing portions 6 and 7, particularly the housing portions 6 and 7 with the connecting member 8, to extend or retract relative to each other. Therefore, depending on the rotational movement of the spindle nut tube 10, the housing portions 6 and 7 can be selectively moved in or out of each other. As a result, the adjusting assembly 1 can be adjusted to a retracted state and an extended state.

[0038] The adjusting assembly 1 also has a pre-tightening assembly 13 for pre-tightening the connector 8 and / or housing portions 6, 7 relative to each other. The pre-tightening of the connector 8 and / or housing portions 6, 7 relative to each other occurs axially, particularly relative to the longitudinal axis of the housing portions 6, 7.

[0039] Importantly, the preload assembly 13 has a torsion spring 14, and the torsion spring 14 preloads the spindle nut tube 10 in the rotational direction, particularly relative to the first housing portion 6, with the spindle nut 11.

[0040] In this context, the term "torsion spring" should be interpreted broadly to include spring elements that can store energy once torn, such as torsion bars or coil springs. During torsion, a portion of the torsion spring 14, such as spring connectors 24, 25, torsional relative to another portion of the torsion spring 14, such as another spring connector 24, 25.

[0041] The torsion spring 14 generates torque on the spindle nut tube 10 in the rotational direction. During the adjustment of the adjusting assembly 1, for example, starting from the retracted state and moving in the extended state direction, the spindle nut tube 10 rotates and moves together with the spindle nut 11. This can be done manually and / or automatically. If the spindle nut tube 10 and the spindle nut 11 rotate and move together in the rotational direction, the rotational movement can be achieved or at least assisted by the torque generated by the torsion spring 14. In this case, the torsion spring 14 can be at least partially relaxed. If the rotational movement of the spindle nut tube 10 and the spindle nut 11 is opposite to the rotational direction, the rotational movement can be braked by torque. In this case, the torsion spring 14 can be at least partially tensioned.

[0042] As described above, preferably, the adjusting component 1 can be adjusted to a retracted state and an extended state. This can be, for example, according to... Figure 1 a), 2a), 2b), and 3 are performed automatically by the drive motor 15, which will be described later, and / or, for example, manually by the user. The connectors 8 and / or housing portions 6, 7 are pre-tightened in the retracted direction by the pre-tightening assembly 13, or, in this case, preferably in the extended direction. The connectors 8 and / or housing portions 6, 7 are pre-tightened relative to each other, particularly in the axial direction. The pre-tightening of the pre-tightening assembly 13 is preferably achieved, at least in part, by the torsion spring 14 pre-tightening the spindle nut tube 10 in the respective rotational direction.

[0043] according to Figure 1 a) and preferably, the connector 8 and the housing portions 6, 7 are pre-tightened in the extended direction by the pre-tightening assembly 13. In this way, the adjustment of the closing element 2 from the closed position to the open position can be achieved and / or assisted by the adjustment assembly 1. The closing element 2 can also be held in the open position by the adjustment assembly 1, such as Figure 1 As shown in a).

[0044] In this regard, it is preferable to provide a preload assembly 13 that preloads the connector 8 relative to each other with corresponding preload forces in both the retracted and extended states. Therefore, the preload assembly 13 can always generate a preload force. Specifically, the torsion spring 14 can influence the corresponding preload force at least proportionally in both the retracted and extended states, for example, by preloading the spindle nut tube 10 in the rotational direction in both the retracted and extended states. In this case, preferably, the preload force generated by the preload assembly 13 in the retracted state exceeds the preload force generated by the preload assembly 13 in the extended state.

[0045] Regarding the support of the spindle nut tube 10, it has been demonstrated that if the adjusting assembly 1 has a support assembly 16, and the support assembly 16 rotatably supports the spindle nut tube 10 at two support points 17 spaced apart from each other in the axial direction on the first housing portion 6, the spindle nut tube 10 can be supported relatively stably due to the spaced-apart support points 17. As a result, the support characteristics of the adjusting assembly 1 and therefore its overall operational reliability are optimized. The support assembly 16 can be specifically configured such that the spindle nut tube 10 is supported on two opposing tube ends.

[0046] At support point 17, the spindle nut tube 10 can preferably be supported circumferentially and / or radially around the longitudinal axis of the spindle nut tube 10. Optionally or additionally, one of the support points 17, particularly the support point 17 facing away from the second housing portion 7, can preferably be specifically arranged in the first housing portion 6, while the other of the support points 17, particularly the support point 17 facing the second housing portion 7, can be arranged in both the first housing portion 6 and the second housing portion 7.

[0047] The support assembly 16 preferably has two support elements 18, each supporting the spindle nut tube 10 at one of the support points 17. A torsion spring 14 is preferably arranged axially between the support point 17 and / or the support element 18 in a direction relative to the longitudinal axis of the torsion spring 14. The support element 18 is preferably arranged on the sheath surface of the spindle nut tube 10, for example from... Figure 2 As can be seen from a), 2b), and 3, the support element 18 is preferably arranged, particularly directly on the first housing portion 6. Very particularly preferably, the support element 18 is arranged circumferentially around the spindle nut tube 10.

[0048] Preferably, one of the support elements 18 is configured as a radially supporting support element 18, or each of the support elements 18 is configured as a radially supporting support element 18. In this case, the term "radially supporting support element" specifically includes supports primarily capable of absorbing forces in the radial direction (relative to the longitudinal axis of the spindle nut tube 10), i.e., radial supports, for example. In principle, the radially supporting support element 18 can also absorb forces in the axial direction, but this is not excluded; however, these forces are relatively small compared to the forces that can be absorbed in the radial direction.

[0049] The support element 18 is preferably configured as a sliding support element and / or a rolling support element, respectively. Figure 2a) For example, the upper support element 18 in the figure is designed as a radially supporting rolling support element, and the lower support element 18 in the figure is designed as a radially supporting sliding support element. Different design schemes are conceivable. In the case where one or two of the support elements 18 are constructed as sliding support elements, each sliding support element or plurality of sliding support elements may have a sliding surface. The sliding surface may in each case face the spindle nut tube 10, and in particular slidably rest against one or more sheath surfaces of the spindle nut tube 10. It is conceivable that each sliding support element or plurality of sliding support elements may be constructed as a single piece.

[0050] As described above, the spindle 9 and spindle nut 11 are engaged with each other by a threaded connection 12, thereby allowing at least a portion of the force, such as the support force, to be transmitted from the spindle 9 to the spindle nut 11 and vice versa. To further improve the support characteristics of the adjusting assembly 1, considering the connection between the spindle 9 and the spindle nut 11, it is preferable that the adjusting assembly 1 has a support element 19, which is particularly different from the spindle nut 11. The support element 19 supports the spindle 9 relative to the spindle nut tube 10, particularly in the radial direction relative to the longitudinal axis of the spindle 9. Preferably, the support element 19 is disposed on the spindle 9, particularly on the unthreaded end of the spindle. As a result, the support element 19 can move relative to the spindle nut tube 10, such that the spindle 9 can be supported by the support element 19 in a retracted state. Figure 2 a)) and extended state ( Figure 2 b)).

[0051] Typically, the torsion spring 14 can be arranged radially between the spindle nut tube 10 and the first housing portion 6, particularly within the housing chamber 20. In this respect, it is particularly preferred that the support assembly 16, especially one of the support elements 18, is constructed and arranged on the first housing portion 6 such that the housing chamber 20 is formed within the first housing portion 6. The housing chamber 20 is spatially separated from the second housing portion 7 by the support assembly 16, particularly by one of the support elements 18. This is, for example, from... Figure 2 As can be seen from a), 2b), and 3, in this case, one of the support elements 18 can be specifically the support element 18 facing the second housing portion 7.

[0052] In one of the support elements 18 (in Figure 2 In cases where the lower portion of support element 18 (as in a) and 2b) spatially separates the housing chamber 20 relative to the second housing portion 7, in addition to supporting the spindle nut tube 10, support element 18 can also achieve, for example, a moisture-proof seal for the housing chamber 20 and / or, for example, damping of the spindle nut tube 10. In this respect, one of the support elements 18 can be used as a multi-functional component. It is conceivable that one of the support elements 18 comprises plastic.

[0053] refer to Figure 2 a), 2b), 3, and preferably, the length of the housing chamber 20 is constant. This means that when the adjusting assembly 1 is adjusted from the retracted state to the extended state, the length of the housing chamber 20 does not change, and vice versa. The housing chamber 20 may be arranged at least partially, particularly completely, in the first housing portion 6. The housing chamber 20 may be defined by the first housing portion 6, the spindle nut tube 10, and the support assembly 16, particularly one of the support elements 18. The housing chamber 20 may generally be arranged radially relative to the longitudinal axis of the spindle nut tube 10 between the spindle nut tube 10 and the first housing portion 6. One of the support elements 18 may be arranged as a closed plug on the first housing portion 6, particularly at one end of the first housing portion 6. One of the support elements 18 may have a collar portion 21 and / or a sleeve portion 22 ( Figure 2 a) and 3).

[0054] Regarding the torsion spring 14, in conjunction with the housing chamber 20, it is particularly preferably provided that the torsion spring 14 is arranged within the housing chamber 20, for example from... Figure 2 As can be seen from a) and 2b), the preload element 23 is housed in the housing chamber 20 by the first housing part 6 and is well protected from external influences.

[0055] Although the design of the torsion spring 14 is generally not limited to certain designs, it is particularly preferred that the torsion spring 14 has two spring connectors 24, 25, namely a first spring connector 24 and a second spring connector 25, which in Figure 4 Generally visible in a) to 4d). The first spring connector 24 is specifically torsionally connected to the spindle nut tube 10. This can be done directly or indirectly. According to Figure 2 a) The first spring connector 24 is, for example, directly connected to the spindle nut tube 10. According to Figure 3 The first spring connector 24 is indirectly connected to the main shaft nut tube 10 via an intermediate gear 26, as will be described below. The second spring connector 25 is specifically torsionally connected to the first housing portion 6. This can be done directly or indirectly.

[0056] For example, refer to Figure 2 a) and preferably, the second spring connector 25 is indirectly connected to the first housing portion 6 via one of the support elements 18. The support element 18 is particularly the support element 18 facing the second housing portion 7. The support element 18 is torsional relative to the first housing portion 6, such that the second spring connector 25 is also torsional relative to the first housing portion 6.

[0057] Same reference Figure 2a) and alternatively or additionally, the spindle nut tube 10 preferably has a connecting portion 27 through which the first spring connector 24 is connected to the spindle nut tube 10. In this case, the connecting portion 27 is preferably molded onto the spindle nut tube 10.

[0058] As described above, the adjusting assembly 1 preferably has an intermediate gear 26. The torsion spring 14, particularly the first spring connector 24, can be indirectly connected to the main shaft nut tube 10 via the intermediate gear 26, such as... Figure 3 As shown. Alternatively, it is also conceivable that the torsion spring 14, and in particular the second spring connector 25, is connected to the first housing portion 6 via an intermediate gear 26. Typically, the intermediate gear 26 can reduce the speed of rotation of the torsion spring 14 compared to the rotational movement of the main shaft nut tube 10, wherein the spring connectors 24, 25 rotate relative to each other, which occurs during the adjustment of the adjusting assembly 1 between the retracted and extended states.

[0059] refer to Figure 3 The cross-sectional view is shown in the figure, and preferably, the intermediate gear 26 is configured as a planetary gear. The intermediate gear 26 preferably has a ring gear 28, several planets 29, a planet carrier 30, and a sun gear 31. A torsion spring 14, particularly (as shown here) a first spring connector 24 or a second spring connector 25, is connected to the planet carrier 30. The spindle nut tube 10 and the planet carrier 30 with the first spring connector 24 or the second spring connector 25 are kinematically coupled to each other. The rotational movement of the spindle nut tube 10, for example during the adjustment of the adjusting assembly 1 between a retracted state and an extended state, affects the rotational movement of the planet carrier 30, and ultimately affects the rotational movement of the first spring connector 24 and the second spring connector 25, respectively. The torsion spring 14 can influence, assist, and / or brake the rotational movement of the spindle nut tube 10; conversely, the rotational movement of the spindle nut tube 10 can preload or release the torsion spring 14 depending on the direction of rotation.

[0060] The gear ring 28 is preferably arranged on the first housing portion 6, and / or the sun gear 31 is preferably arranged on the main shaft nut tube 10. For example... Figure 3 As shown, the gear ring 28 can be molded onto the first housing portion 6. The sun gear 31 can also be molded onto the spindle nut tube 10, as shown here.

[0061] In this configuration, preferably, the intermediate gear 26 is arranged between the support elements 18 along the axial direction of the spindle nut tube 10. However, it is conceivable that the intermediate gear 26 forms one of the support elements 18, for example, the support element 18 facing away from the second housing portion 7. In this case, the support of the spindle nut tube 10 can be achieved at least partially by the intermediate gear 26.

[0062] Regarding the design of the torsion spring 14, it is also preferable to provide spring connectors 24 and 25 arranged on opposite sides of the torsion spring 14 relative to the axial direction, such as specifically from... Figure 4 This is clearly evident in a), 4b), and 4c). Based on... Figure 1 In embodiments a) to 3, this design for the torsion spring 14 is also provided. Alternatively, it is conceivable that the spring connectors 24 and 25 are arranged on the same side of the torsion spring 14 relative to the axial direction, such as... Figure 4 As shown in d), spring connectors 24 and 25 are arranged on the "lower" side of the torsion spring 14. In this case, and preferably, the torsion spring 14 is configured as a double spring.

[0063] Regarding the connection of the torsion spring 14, particularly preferably, the torsion spring 14 is connected to the spindle nut tube 10 or the first housing portion 6 in a form-locking manner via a first spring connector 24 and / or a second spring connector 25. This can be achieved in various ways. Therefore, referring to... Figure 2 a) It can be imagined that the first spring connector 24 and the main shaft nut tube 10 are connected to each other in a form-locking manner by means of the first spring connector 24 engaging with the connecting groove of the connecting portion 27 in a torsion-resistant manner. (Refer to...) Figure 3 The first spring connector 24 and the spindle nut tube 10 can also be connected to each other by a form-locking mechanism, since the first spring connector 24 is torsionally engaged in the connecting groove of the planetary carrier 30. Regarding the second spring connector 25, see [reference needed]. Figure 2 a) It can be imagined that the second spring connector 25 and the first housing portion 6 are connected to each other in a form-locking manner, because the second spring connector 25 is torsionally engaged in the connecting groove of one of the support elements 18, particularly the connecting groove of the support element 18 facing the second housing portion 7.

[0064] The torsion spring 14 preferably has a torsion portion 32 disposed between a first spring connector 24 and a second spring connector 25. The first spring connector 24 and the second spring connector 25 are arranged on the torsion portion 32, and are particularly molded, for example... Figure 4 a) to 4d) are cases of torsion spring 14. The first spring connector 24 and / or the second spring connector 25 can be oriented substantially axially relative to the longitudinal axis of the torsion spring 14. Figure 4 c)) and / or substantially oriented along the radial direction ( Figure 4 a), 4b), 4d)) are arranged on the torsion portion 32. The first spring connector 24 and / or the second spring connector 25 may extend inward and / or outward from the torsion portion 32 in a radial direction relative to the longitudinal axis of the torsion spring 14.

[0065] Regardless of how the torsion spring 14 is connected, it has proven particularly preferred that the torsion spring 14 be supported via the main shaft nut tube 10 in a manner similar to a guide spindle. For this purpose, the torsion spring 14 is arranged at least partially around the main shaft nut tube 10, such as... Figure 2 As shown in a), 2b), and 3, the torsion spring 14 can be supported by the spindle nut tube 10 in both the retracted and extended states. The torsion spring 14 can be supported over a large portion of its length, preferably at least 80% of its length, and more preferably at least 90% of its length.

[0066] Optionally or additionally, the torsion spring 14 may preferably be provided to be supported via the first housing portion 6 in the manner of a guide sleeve. For this purpose, the torsion spring 14 is arranged at least in sections within the first housing portion 6, particularly within the housing chamber 20, such as... Figure 2 As shown in a) and 2b). The torsion spring 14 can be supported by the first housing portion 6 in both the retracted and extended states. The torsion spring 14 can be supported over a large portion of its length, preferably at least 80% of its length, and more preferably at least 90% of its length.

[0067] Preferably, the torsion spring 14 can be supported by the spindle nut tube 10 in the retracted state and by the first housing portion 6 in the extended state. Optionally, the torsion spring 14 can be supported by the spindle nut tube 10 in the extended state and by the first housing portion 6 in the retracted state.

[0068] Although the term "torsion spring" should be interpreted broadly as stated above, it has been found that it is particularly preferred if the torsion spring 14 is constructed as a helical spring, as shown in the figure. The torsion spring 14 preferably has a line 33 ( Figure 4 a) to 4d). Here, and preferably, the wire body 33 forms a twisted portion 32 and / or a first spring connector 24 and / or a second spring connector 25. Preferably, the wire body 33 has a substantially constant pitch in the region of the twisted portion 32. The wire body 33 may, in particular, be rolled. The wire body 33 may have a circular ( Figure 4 b)), especially circular ( Figure 4 a), 4c), 4d), or elliptical or polygonal, especially quadrilateral, line cross-section 34. Other designs for the line cross-section 34 are also conceivable. Particularly preferred is that the line cross-section 34 is flat-rolled. This means that during the manufacturing process, the approximately circular line cross-section 34 is flat-rolled, for example from... Figure 4 b) It can be seen that...

[0069] Preferably, the preload assembly 13 may have another torsion spring 35, and the torsion spring 14, together with the other torsion spring 35, preloads the spindle nut tube 10 in the rotational direction using the spindle nut 11. The other torsion spring 35 may have one or more features described in conjunction with the torsion spring 14. Preferably, the torsion spring 14 and the other torsion spring 35 are arranged adjacent to and / or coaxial with each other in the radial direction, particularly relative to the longitudinal axis of the spindle nut tube 10. Preferably, the spring system formed by the torsion spring 14 and the other torsion spring 35... Figure 4 As shown in c) as an example. Torsion spring 14 and another torsion spring 35 may together form a double spring, and in particular, they are non-detachably connected to each other and / or coaxially aligned with each other.

[0070] Regarding the preload assembly 13, in addition to the torsion spring 14 and optionally another torsion spring 35, the preload assembly 13 may also have other preload components. Preferably, the preload assembly 13 has a preload element 23 that preloads the spindle 9 in the axial direction, particularly relative to the first housing portion 6. As shown here, this can occur indirectly, for example, through the support element 19, or directly. The preload element 23 differs from the torsion spring 14, and, if present, from the other torsion spring 35. The preload element 23 can, in particular, be a mechanical preload element 23. (See reference...) Figure 2 a), 2b), and preferably, the preload element 23 is arranged in the spindle nut tube 10. As shown here, the preload element 23 may be in the form of a compression spring.

[0071] Particularly preferably, starting from the retracted state of the adjusting assembly 1, the preload element 23 preloads the spindle 9 only in segments, particularly relative to the first housing portion 6. In this case, "segmentally" means that in the initial movement portion starting from the retracted state, the spindle 9 is preloaded by the preload element 23, and in subsequent movement portions toward the extended state, the spindle 9 is not further preloaded by the preload element 23. This can be achieved from... Figure 2 As can be seen from the combination of a) and 2b). Therefore, for example, starting from the retracted state of the adjusting component 1, the adjustment in the direction of the extended state may initially require a relatively small adjusting force, which must be applied, for example, by the user or the drive component 36 having the drive motor 15, as will be described further below.

[0072] Typically, the preload element 23 can be axially fixed relative to the first housing portion 6, for example, on the spindle nut tube 10 and / or the coupling element 37, as will be described below. In the retracted state of the adjusting assembly 1, the preload element 23 may contact the spindle 9 and / or the support element 19, while in the extended state of the adjusting assembly 1, the preload element 23 may not be in contact. Alternatively, it is also conceivable that the preload element 23 can move with the spindle 9, for example, by arranging the preload element 23 on the spindle 9 and / or the support element 19. In this case, in the retracted state of the adjusting assembly 1, the preload element 23 may contact the spindle nut tube 10 and / or the coupling element 37, and in the extended state of the adjusting assembly 1, the preload element 23 may contact the spindle nut tube 10 and / or the coupling element 37.

[0073] As an alternative to or supplement to preload element 23, preload assembly 13 may have another preload element 38, which preloads housing portions 6, 7 and / or connector 8 relative to each other in the axial direction. Preload element 23 differs from torsion spring 14 and, if present, from another torsion spring 35. In this case, the axial direction relates to the longitudinal axis of spindle nut tube 10, spindle 9 and / or first housing portion 6 and / or second housing portion 7. (Refer to...) Figure 2 a) Preferably, another preload element 38 can support the first housing portion 6 via one of the support points 17, particularly via one of the support elements 18. The other preload element 38 can be, in particular, a mechanical preload element 38. (See reference...) Figure 2 a), 2b), and preferably, another preload element 38 is arranged in the second housing portion 7. The other preload element 38 may be in the form of a compression spring.

[0074] Particularly preferably, the other preload element 38 preloads the housing portions 6 and 7 only in stages, starting from the retracted state of the adjusting assembly 1. In this case, "in stages" means that in the initial movement portion starting from the retracted state, the housing portions 6 and 7 are preloaded by the other preload element 38, and in the subsequent movement portion toward the extended state, the housing portions 6 and 7 are not further preloaded by the other preload element 38. This can be achieved from... Figure 2 This can be seen from the combination of a) and 2b). Therefore, for example, starting from the retracted state of the adjusting component 1, the initial adjustment in the direction of the extended state may require a relatively small adjusting force.

[0075] Typically, as shown here, another preload element 38 can be axially fixed relative to the first housing portion 6. The other preload element 38 can be arranged, for example, at one of the support points 17, particularly at one of the support elements 18. In the retracted state of the adjusting assembly 1, the other preload element 38 can contact the second housing portion 7, while in the extended state of the adjusting assembly 1, the other preload element 38 may not be in contact. Alternatively, the other preload element 38 can also be axially fixed relative to the second housing portion 7. The other preload element 38 can move together with the second housing portion 7, for example, by arranging the other preload element 38 on the second housing portion 7. In this case, the other preload element 38 can contact one of the first housing portion 6 and / or the support element 18 in the retracted state of the adjusting assembly 1, and not in contact in the extended state of the adjusting assembly 1.

[0076] The above description, in another context, indicates that adjustment component 1 can be essentially active. Figure 1 a), 2a), 2b) and 3) or passive ( Figure 1 (b)). In conjunction with the active design scheme, the adjustment assembly 1 may have a drive assembly 36, which includes, in particular, an electric drive motor 15, and the rotational movement of the spindle nut tube 10 can be achieved by the drive assembly 36. The drive assembly 36 allows the closing element 2 to be automatically adjusted to the open and / or closed position via the adjustment assembly 1. The drive motor 15 is here and preferably arranged in the first housing portion 6 (e.g., from...). Figure 1 (a)) It can be seen that...

[0077] Here, and preferably, the drive assembly 36 and the spindle nut tube 10 are coupled to each other in terms of drive via a flexible coupling element 37. The coupling element 37 has already been mentioned in another context above. The coupling element 37 can be arranged in the drive aspect between the drive motor 15 and the spindle nut tube 10 (e.g., from...). Figure 2 a) and Figure 3 (As can be seen). The "flexibility" associated with coupling element 37 means that a certain offset between drive assembly 36 and spindle nut tube 10 can be compensated by coupling element 37. For example, an axial offset, an angular offset, and / or a radial offset can be compensated. For this purpose, coupling element 37 can include plastic, particularly an elastomer. Coupling element 37 can also serve a sealing and / or damping function.

[0078] Combined with passive design schemes ( Figure 1 b)) The adjusting assembly 1 can be configured without a drive motor. It is conceivable that the passively configured adjusting assembly 1 also has a coupling element 37; however, in this case, it is primarily used to support the preload element 23. Figure 1 b)) and coupling is not necessarily required.

[0079] Regarding the drive assembly 36, it has proven useful if the drive assembly 36 has a control assembly 39. The control assembly 39 allows for the control of the drive motor 15. The control assembly 39 can be arranged at least partially, and particularly completely, in one of the housing portions 6 and 7, especially in the first housing portion 6. It is also conceivable that the control assembly 39 is arranged on the body 4 of the motor vehicle 3. Figure 1 a)).

[0080] Alternatively or additionally, the drive assembly 36 preferably has a drive gear 40. The drive gear 40 can convert the drive motion of the drive motor 15 into the rotational motion of the spindle nut tube 10. The drive gear 40 is preferably arranged between the drive motor 15 and the spindle nut tube 10 in terms of drive. Here and preferably, the drive gear 40 is at least partially, in particular completely, arranged in one of the housing portions 6 and 7, especially in the first housing portion 6.

[0081] Furthermore, alternatively or additionally, the drive assembly 36 preferably has a coupler 41. The coupler 41 is disposed between the drive motor 15 and the spindle nut tube 10 in terms of drive. Here, and preferably, the coupler 41 is at least partially, particularly completely, arranged in one of the housing portions 6 and 7, particularly in the first housing portion 6. The coupler 41 couples the drive motor 15 and the spindle nut tube 10 together or decouples them from each other as needed. For example, it is conceivable that when a user is in danger of being trapped between the enclosure element 2 and the body 4, the coupler 41 provides clamping protection, for example, by decoupling the drive motor 15 and the spindle nut tube 10 from each other. It is also conceivable that the coupler 41 provides overload protection for the drive motor 15, for example, when the enclosure element 2 is manually adjusted relative to the drive motor 15. The coupler 41 can be in the form of, for example, a claw coupler or a sliding coupler, particularly in the form of a tolerance ring.

[0082] Furthermore, alternatively or additionally, the drive assembly 36 has a brake 42. The brake 42 is disposed between the drive motor 15 and the spindle nut tube 10 in terms of drive, and can brake the rotational movement of the spindle nut tube 10. In this way, it is possible to support or achieve holding the closing element 2 in, for example, an open position and / or prevent excessively rapid adjustment of the adjusting assembly 1 and the closing element 2. Here, and preferably, the brake 42 is at least partially, particularly completely, arranged in one of the housing portions 6 and 7, especially in the first housing portion 6.

[0083] Furthermore, alternatively or additionally, the drive assembly 36 preferably has an output shaft 43. The output shaft 43 is connected to the spindle nut tube 10 in a driving manner, particularly in such a way that the rotational movement of the output shaft 43 affects the rotational movement of the spindle nut tube 10. The output shaft 43 may be arranged substantially coaxially with the longitudinal axis of the spindle nut tube 10. A coupling element 37 may be arranged on the output shaft 43. Here, and preferably, the output shaft 43 is at least partially, particularly completely, arranged in one of the housing portions 6 and 7, particularly in the first housing portion 6.

[0084] The adjusting assembly 1 preferably has an anti-torsion device 44. The housing parts 6 and 7 are prevented from torsion relative to each other by the anti-torsion device 44. Therefore, torsion of the housing parts 6 and 7 relative to each other is avoided, but the housing parts 6 and 7 can move axially relative to each other, especially telescoping.

[0085] The anti-torsion device 44 prevents the housing portions 6 and 7 from twisting relative to each other, preferably in a form-locking manner. To this extent, the form-locking prevents the housing portions 6 and 7 from twisting relative to each other. Essentially, the anti-torsion device 44 can be implemented using a torsion tube. However, considering the reduction in the number of parts, it has proven particularly advantageous if the anti-torsion device 44 is constructed as part of the housing portions 6 and 7. In this case, a form-locking can exist between the housing portions 6 and 7. Here, and preferably, the first housing portion 6 has at least one protrusion, such as, in particular, one or more ribs, and the second housing portion 7 has at least one groove, such as, in particular, one or more slots, wherein the one or more protrusions engage or interlock with the one or more grooves in such a way that the housing portions 6 and 7 are prevented from twisting relative to each other. This can be achieved from... Figure 1 As seen in a) and 1b), a portion of the first housing portion 6 is cut open at the corresponding lower part of the illustration so that a groove in the form of a recess in the second housing portion 7 can be seen. It is also conceivable that the second housing portion 7 has one or more protrusions and the first housing portion 6 has one or more recesses, or that the first housing portion 6 has at least one recess and at least one protrusion, and the second housing portion 7 has at least one protrusion and at least one recess.

[0086] Typically, adjustment component 1 can be particularly preferably configured as a spindle drive.

[0087] A closed element assembly 5, comprising a closed element 2 and the proposed adjustment component 1, is also proposed. The closed element assembly 5... Figure 1 As shown in a), this is assigned to motor vehicle 3, and has already been mentioned above in conjunction with adjustment component 1.

[0088] Please refer to all statements regarding the proposed regulating component 1.

[0089] Basically, adjustment component 1 can be active or passive. However, referring to... Figure 1 a) If the closure element assembly 5 has a plurality of adjustment components 1 according to the invention, wherein, in particular, one of the adjustment components 1 is configured to be active ( Figure 1 a)), and another component in adjustment component 1 is configured to be passive ( Figure 1 b)) has proven to be particularly useful.

Claims

1. An adjustment assembly for a closing element (2) of a motor vehicle (3) having a body (4), wherein, The adjusting assembly (1) has two retractable housing portions (6, 7) relative to each other, each having a connector (8) for connecting the adjusting assembly (1) to the enclosure element (2) and the vehicle body (4). The adjusting assembly (1) includes a main shaft (9), a main shaft nut tube (10), and a main shaft nut (11) disposed on the main shaft nut tube (10). The main shaft nut tube (10) is rotatably disposed on the first housing portion (6), and the main shaft (9) is fixedly disposed on the second housing portion (7). The main shaft (9) and the main shaft nut (11) are engaged with each other by a threaded connection (12), such that the main shaft nut (11) moves along the main shaft (9) during the rotational movement of the main shaft nut tube (10), thereby causing the housing portions (6, 7) to retract relative to each other. The adjusting assembly (1) has a preload assembly (13) for preloading the connector (8) relative to each other. Its features are, The pretensioning assembly (13) has a torsion spring (14), and The torsion spring (14) is preloaded in the rotational direction by the spindle nut (11) into the spindle nut tube (10).

2. The adjustment component according to claim 1, characterized in that, The adjustment assembly (1) is adjustable to a retracted state and an extended state, and the connector (8) is pre-tightened by the pre-tightening assembly (13), in particular by the torsion spring (14), in the direction of the retracted state or in the direction of the extended state.

3. The adjustment component according to claim 2, characterized in that, The pre-tightening assembly (13) pre-tightens the connector (8) in the retracted state and the extended state relative to each other with a corresponding pre-tightening force, preferably, the pre-tightening force in the retracted state exceeds the pre-tightening force in the extended state.

4. The adjustment component according to any one of the preceding claims, characterized in that, The adjusting assembly (1) has a support assembly (16) that rotatably supports the spindle nut tube (10) at two support points (17) spaced apart from each other in the axial direction on the first housing portion (6). Preferably, the support assembly (16) has two support elements (18) that support the spindle nut tube (10) at one of the support points (17). More preferably, one or more of the support elements (18) are configured as radially supporting support elements (18).

5. The adjustment component according to claim 4, characterized in that, The support assembly (16), particularly one of the support elements (18), is constructed and arranged on the first housing portion (6) in such a way that a housing chamber (20) is formed in the first housing portion (6) and is spatially separated from the second housing portion (7) by means of the support assembly (16), particularly by means of one of the support elements (18), preferably, the torsion spring (14) is arranged in the housing chamber (20).

6. The adjustment component according to any one of the preceding claims, characterized in that, The torsion spring (14) has two spring connectors (24, 25), and the first spring connector (24) is particularly torsionally connected to the spindle nut tube (10), and the second spring connector (25) is particularly torsionally connected to the first housing portion (6). Preferably, the spindle nut tube (10) has a connecting portion (27), and the first spring connector (24) is connected to the spindle nut tube (10) via the connecting portion (27), and / or the second spring connector (25) is connected to the first housing portion (6) via one of the support elements (18).

7. The adjustment component according to any one of the preceding claims, characterized in that, The adjusting assembly (1) has an intermediate gear (26), and the torsion spring (14) is connected to the spindle nut tube (10) or the first housing portion (6) via the intermediate gear (26). In particular, the first spring connector (24) or the second spring connector (25) is connected to the spindle nut tube (10) or the first housing portion (6) via the intermediate gear (26). Preferably, the intermediate gear (26) includes a gear ring (28), a plurality of planets (29), a planet carrier (30), and a sun gear (31), and the torsion spring (14) is torsionally connected to the planet carrier (30). More preferably, the gear ring (28) is disposed on the first housing portion (6), and / or the sun gear (31) is disposed on the spindle nut tube (10).

8. The adjustment assembly according to claim 6 or 7, characterized in that, The spring connectors (24, 25) are arranged on opposite sides or on the same side of the torsion spring (14) relative to the axial direction.

9. The adjustment assembly according to any one of claims 6 to 8, characterized in that, The torsion spring (14) is connected to the spindle nut tube (10) or the first housing portion (6) in a form-locking manner via the first spring connector (24) and / or via the second spring connector (25). Preferably, the torsion spring (14) has a torsion portion (32) disposed between the first spring connector (24) and the second spring connector (25), and the first spring connector (24) and the second spring connector (25) are arranged on the torsion portion (32), particularly molded thereon. More preferably, the first spring connector (24) and / or the second spring connector (25) are arranged on the torsion portion (32) and are oriented substantially axially and / or substantially radially relative to the longitudinal axis of the torsion spring (14).

10. The adjustment component according to any one of the preceding claims, characterized in that, The torsion spring (14) may be supported via the main shaft nut tube (10) in a guide mandrel manner, and / or the torsion spring (14) may be supported via the first housing portion (6) in a guide sleeve manner.

11. The adjustment component according to any one of the preceding claims, characterized in that, The torsion spring (14) has a line body (33), preferably, the line body (33) has a circular, particularly circular or elliptical, or polygonal, particularly rectangular line cross-section (34).

12. The adjustment component according to any one of the preceding claims, characterized in that, The preload assembly (13) has another torsion spring (35), and the torsion spring (14) together with the other torsion spring (35) preloads the spindle nut tube (10) in the rotational direction with the spindle nut (11). Preferably, the torsion spring (14) and the other torsion spring (35) are arranged adjacent to each other in the radial direction.

13. The adjustment component according to any one of the preceding claims, characterized in that, The preload assembly (13) has a preload element (23) that is different from the torsion spring (14) and optionally different from the other torsion spring (35), and the preload element (23) preloads the spindle (9) in the axial direction, particularly relative to the first housing portion (6). Preferably, the preload element (23) is arranged in the spindle nut tube (10), and / or, the preload assembly (13) has another preload element (38) that is different from the torsion spring (14), which preloads the housing portions (6,7) and / or the connector (8) in the axial direction relative to each other. Preferably, the other preload element (38) is arranged in the second housing portion (7).

14. A closed element assembly comprising a closed element (2) and an adjustment assembly (1) according to any one of the preceding claims.

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