Drive device and component for a drive device

Abstract

The invention relates to a drive device (1) for moving vehicle components, in particular a linear drive, a spindle drive and / or a telescopic drive. The invention also relates to a housing assembly (2) for a drive device (1). The invention also relates to a connecting element (3) for a drive device (1). The invention also relates to a spring element (10) for a drive device (1).

Description

Technical Field

[0001] The present invention relates to drive devices for moving vehicle components, particularly linear drives, spindle drives and / or telescopic drives.

[0002] The present invention relates to a housing assembly for a drive device.

[0003] The present invention relates to a connecting element, such as a fixing element, for a drive device.

[0004] The present invention relates to a spring element for a drive device. Background Technology

[0005] For example, drive devices known from the prior art, such as spindle drives, are configured, for instance, to motor-regulate the rear cover of a motor vehicle. Such spindle drives, for example, have an electric drive unit and a spindle / spindle nut transmission downstream of the electric drive unit, used to generate linear drive motion for opening and closing the rear cover.

[0006] The drive unit disclosed in the prior art includes, for example, a housing assembly for accommodating the drive unit and the spindle-spindle nut transmission, wherein the connecting element for coupling the rear cover to one end of the housing assembly is welded or screwed.

[0007] Furthermore, the drive mechanism disclosed in the prior art also includes a simple spring element to support the drive motion, wherein the drive mechanism additionally has a separate spring guide tube for guiding the spring element.

[0008] Furthermore, the drive device disclosed in the prior art also includes an adjustment element coupled to the drive unit, such as a threaded rod, which drives a sleeve with a longitudinally displaceable connecting element disposed at the end. Summary of the Invention

[0009] The object of the present invention is to provide an improved drive device compared with the prior art, a housing assembly for the drive device that is improved and has fewer parts compared with the prior art, a connecting element for the drive device that is improved and simplified compared with the prior art, and a spring element for the drive device that is improved compared with the prior art.

[0010] Regarding the aforementioned drive device, the solution of the present invention to achieve the above-mentioned objective is described below. Regarding another drive device, the solution of the present invention to achieve the above-mentioned objective is described below. Regarding the housing assembly for the drive device, the solution of the present invention to achieve the above-mentioned objective is described below. Regarding the connecting element for the drive device, the solution of the present invention to achieve the above-mentioned objective is described below. Regarding the spring element for the drive device, the solution of the present invention to achieve the above-mentioned objective is described below.

[0011] Advantageous improvements of the present invention are also described herein.

[0012] A housing assembly for a drive device includes at least a first housing portion and a second housing portion for accommodating a drive unit and an adjustment device drivable by the drive unit, the second housing portion being movably arranged to partially overlap with the first housing portion, wherein an opening is formed at one end of the first or second housing portion, and a separate connecting element partially passes through the opening, wherein the connecting element snaps into the end of the first or second housing portion in a final mounting position.

[0013] The main advantage of this invention lies in the simplified installation process of the housing assembly and the relatively few components of the housing assembly. The housing assembly, particularly the housing portion with connecting elements, consists of a minimal number of components and can be manufactured through several simple installation steps. For example, the second housing portion is constructed to accommodate and cover a cover element or shroud of the first housing portion, at least in the area of ​​the adjustment device. In an improved embodiment, the first housing portion is integrally provided with connecting elements. The first housing portion is fixed to a vehicle opening, for example, to the vehicle body, via its connecting elements. The second housing portion is fixed to a vehicle element movable relative to the vehicle opening via its connecting elements. In this arrangement of the drive unit, an opening is constructed at one end of the second housing portion, through which a separate connecting element partially passes, wherein the connecting element snaps into that end of the housing portion in the final installed position. The second housing portion is longitudinally movable relative to the first housing portion and moves away from or toward the first housing portion during operation of the drive unit. In an improved embodiment, both housing portions are provided with separate connecting elements. It is particularly advantageous to provide such separate connecting elements for the housing portion connected to the adjustment device. This allows for a simple connection to be established between the adjustment device and the corresponding movable housing part via connecting elements.

[0014] The snap-fit ​​engagement is formed in the interface between the second housing portion, particularly the end of the second housing portion, and the connecting element. This snap-fit ​​engagement is formed, for example, by a form-fitting and / or compression-fitting snap connection between the end of the second housing portion and the connecting element, such as a clamping, locking, and / or tight-fitting connection.

[0015] The end of the housing portion is, for example, an exposed irregular end. This irregular end, for example, has an opening with multiple grooves and / or protrusions. The connecting element is constructed to close this opening. In the final installed position, the connecting element snaps into the irregular end of the housing portion.

[0016] In one embodiment of the housing assembly, a snap-fit ​​element is constructed on the opening, with a gap therebetween, wherein the snap-fit ​​element snaps into at least one groove constructed on the outer periphery of the connecting element in the final installation position.

[0017] In one embodiment of the housing assembly, the irregular end has a groove and / or a bulge on its inner periphery, wherein the irregular end snaps into at least one groove constructed on the outer periphery of the connecting element.

[0018] The housing assembly has, in particular, a cylindrical housing portion. These housing portions are, for example, generally sleeve-shaped or constructed as a housing tube. The end of the second housing portion that snaps into the connecting element has, for example, a snap-fit ​​element extending in the direction of the opening. This end may have an edge with a snap-fit ​​element, a groove, and / or a protrusion. That is, the connection interface is constructed to snap into the connecting element. The snap-fit ​​element is, for example, a clip element, a clamping element, and / or a snap-fit ​​element. The snap-fit ​​connection is, for example, a releasable connection, thus facilitating disassembly for component maintenance and replacement. During installation, the connecting element partially passes through the opening until the snap-fit ​​element of the second housing portion snaps into at least one groove in the connecting element.

[0019] In one embodiment of the housing assembly, the connecting element includes a first end that can be coupled to a bearing element on a vehicle assembly, and a second end that connects to the first end. In the final installed position, the first end passes through an opening. The diameter of the second end is larger than the diameter of the first end and the opening. That is, the second end forms a stop. The second end includes at least one groove. The groove is constructed, for example, as a continuous groove arranged on the outer periphery of the connecting element (particularly the second end). The first end is designed as a protruding connecting end. The second end includes a surrounding stop ring. The connecting end protrudes from the surrounding stop ring. During the installation of the connecting element and the corresponding housing portion, the connecting element is guided from the inside out through the cavity of the housing portion and through the opening provided for snap-fit ​​connection until the snap-fit ​​element arranged on the opening, particularly in the region of the stop ring, snaps into the groove.

[0020] The snap-fit ​​element is, for example, a snap-fit ​​flange or a hook. The snap-fit ​​element is, for example, made of plastic. The second housing portion is, for example, entirely made of plastic. The snap-fit ​​element is, for example, a plastic clamp and / or a plastic clip. The second housing portion is integrally formed with the snap-fit ​​element. The second housing portion is, for example, a plastic cover. The snap-fit ​​element is manufactured, for example, by forming a notch on the edge of the end of the second housing portion. The snap-fit ​​elements are spaced apart from each other in the openings by gaps or slits. This allows for elastic deformation of the snap-fit ​​elements during installation, i.e., when the connecting element is passed through the opening of the housing portion. The ends of the respective housing portions alternately include snap-fit ​​elements surrounding the openings and gaps located therebetween.

[0021] The snap-fit ​​element engages with at least one groove in a form-fit manner. For example, a so-called drag-and-drop principle is used to connect the housing portion to the connecting element. This saves time and simplifies the connection, especially the snap-fit ​​connection.

[0022] The connecting element may also have a certain number of grooves or multiple grooves, corresponding to the number of snap-fit ​​elements.

[0023] In one embodiment of the housing assembly, the housing assembly includes a sealing element disposed in the final installation position between the inner side of the profiled end and a connecting element. The connecting element has a support region for supporting the sealing element. In the final installation position, the sealing element is fixed between the support region and the end of the second housing portion, particularly between the support region and the snap-fit ​​element. The sealing element is, for example, an O-ring or an omega-shaped sealing element. The sealing element can have different shapes. The sealing element is configured to pre-tension the snap-fit ​​element from the inside out in the final installation position, thereby ensuring that the snap-fit ​​element is snapped into the groove of the connecting element. The sealing element is configured to ensure a reliable snap-fit ​​connection or reliable snap-fit ​​engagement between the housing portion and the connecting element. Furthermore, the sealing element seals the exposed end of the housing portion, thereby protecting the inner cavity of the housing portion from external factors such as dust and moisture. The connecting element has another groove for receiving the sealing element in the final installation position.

[0024] The housing assembly is constructed, for example, for a drive unit, such as a linear actuator. The drive unit is used to operate a cover, such as a rear cover, or another moving vehicle component. The drive unit can be secured to the moving vehicle component by means of a connecting element. For this purpose, the connecting element has, for example, a ball seat by which the drive unit is hinged to the vehicle component and can be connected. A first housing portion of the housing assembly has, for example, another connecting element secured to a base component of the vehicle, such as in the area of ​​a vehicle opening closed by the moving vehicle component. A second housing portion is, for example, constructed to be longitudinally displaceable relative to the first housing portion. The drive unit is, for example, a telescopic actuator, wherein, when the drive unit is operated, an adjusting device extends or retracts to open or close the moving vehicle component. The first housing portion is, for example, divided into two sections. The drive unit is arranged in the first section, and the adjusting device is arranged in a downstream second section. The drive unit includes a drive motor, a transmission unit, and an adapter for transmitting rotational motion to an adjusting element of the adjusting device. The second housing portion is arranged on the first housing portion in a torsional-resistant and longitudinally displaceable manner. The second housing is connected to the adjustment device, such that when the adjustment device is driven, the second housing is longitudinally adjusted relative to the first housing.

[0025] A connecting element for a drive device includes at least one base, the base comprising a first end and a second end, the first end having an engagement interface for engaging with a component, and the second end having a notch exposed perpendicular to the longitudinal extension direction of the base for receiving a spindle end.

[0026] The main advantage of this invention lies in its ability to easily and quickly mount the spindle end onto the connecting element. Furthermore, this drive unit has fewer components. The spindle end is securely held in and torsionally connected to the connecting element. This connection meets the technical requirements of a three-stage telescopic actuator, where the threaded rod is connected to the connecting element in a manner that reliably transmits torque.

[0027] In one embodiment of the connecting element, the notch is generally T-shaped. The notch is, for example, a T-groove.

[0028] In one embodiment of the connecting element, the connecting element includes a locking element having a shape corresponding to a notch and which, after the spindle end is inserted into the notch, closes the spindle end in a form-fit and / or compression fit. The locking element secures the spindle end in both the final mounting position and the working position. The locking element is generally T-shaped. The locking element is made of, for example, plastic and / or metal. The connection between the spindle end, the drive element, and the locking element is, for example, releasable, thus facilitating disassembly for component maintenance and replacement.

[0029] The connecting element is, for example, part of the housing portion of the aforementioned housing assembly. The connecting element is used to secure the drive unit to a moving vehicle assembly, such as a rear cover. In this case, the second housing portion is part of the movement adjustment mechanism of the drive unit. The connecting element is fixedly connected to a threaded rod, particularly a threaded spindle, which retracts or extends relative to the first housing portion when the drive unit coupled with the adjustment mechanism is operated. The fixed connection between the connecting element and the threaded rod is necessary for adjusting the moving vehicle assembly. This connection is achieved, for example, through a recess provided in the connecting element. This recess can be accessed from the outside. The spindle end of the threaded rod is easily inserted, pushed, or pressed into the recess from the outside. For this purpose, the spindle end has a shape corresponding to the recess. One end of the threaded rod has a spindle end whose shape corresponds to the shape of the recess. The recess has a certain depth so that the spindle end and the locking element can be arranged within the recess. In the final installed position, the outer surface of the locking element is flush with the outer surface of the connecting element. The locking element is, for example, a locking pin, a locking stud, or a locking bolt. In another installation step, the connecting element is passed through an opening in the second housing portion of the aforementioned housing assembly for the drive unit using a pre-fixed threaded rod. This notch is specifically constructed in the second end of the connecting element of the aforementioned housing assembly.

[0030] The cross-section of the spindle end is generally T-shaped, making it easy to insert the spindle end into the notch. The notch is constructed to be exposed and accessible to the outside.

[0031] Connecting elements are, for example, fixing elements used to secure the drive unit to the vehicle assembly. Connecting elements are not limited to those used in the aforementioned housing assembly. After the end of the spindle is fixed in the recess, the connecting element can also be connected to different housing parts of the drive unit, for example, by riveting, screwing, adhesive bonding, brazing, or welding.

[0032] The spring element for the drive unit has a surface, which is at least partially provided with a layer made of flocked fibers.

[0033] The main advantage of this invention is that the spring element with this surface treatment can avoid interference noise caused by gaps. The spring element is, for example, a tension spring or a compression spring. The spring element has multiple coils. The spring element has at least one layer of flocked fibers disposed on its surface. In an improved embodiment of the spring element, the coils are entirely disposed of with a layer of flocked fibers. The spring element is, for example, flocked. During the operation of the drive device, at least one flocked surface prevents clicking sounds and harmful noises, for example, when the surface rubs against the inner wall of the drive device. When flocking the spring element, for example, shorter monofilament fibers, typically nylon, synthetic staple fibers, or polyester, are applied directly to a surface previously coated with an adhesive. For example, the flocked fibers are attached to the surface of the spring element using an adhesive.

[0034] The spring element has a special coating, particularly a flocked layer, which increases the outer diameter of the spring element. When the spring element is intact, i.e., coated (especially flocked) on both the outer and inner sides, the outer diameter of the spring element increases, while the inner diameter decreases. In the case of a spring element, for example, as an assembly wound around an adjusting element of a drive mechanism, clicking and harmful noise can be significantly reduced between the adjusting element and the spring element during operation. This coating reduces the free play between the spring element and other parts of the drive mechanism. Flocking is used to at least reduce or even prevent harmful noise that may occur when the spring element moves.

[0035] A drive device includes at least a housing assembly for accommodating a drive unit and an adjustment device drivable by the drive unit, wherein the adjustment device includes a rotatably movable first adjustment element configured to drive a second adjustment element longitudinally movable relative to the rotatably movable first adjustment element, and wherein a spring element is held in a manner surrounding the first adjustment element and guided between the first adjustment element and the housing assembly. That is, the first adjustment element guides the spring element to assist the longitudinal movement of the second adjustment element.

[0036] The drive mechanism is, for example, an actuator, particularly a linear drive, a spindle drive, and / or a telescopic drive, especially a three-stage telescopic drive. The drive mechanism may include, for example, components arranged axially aligned with each other.

[0037] The main advantage of this invention lies in the fact that the spring element is guided in such a way that accidental buckling, such as bending, is prevented during operation and at rest. That is, the first adjusting element is constructed both to adjust the second adjusting element and to guide and support the spring element. The first adjusting element ensures that the spring element is correctly positioned within the drive mechanism. Furthermore, there is no need for the guide sleeve disclosed in the prior art for guiding the spring element. The adjusting element is a combined adjusting and guiding element. This is achieved by constructing the first adjusting element as a cylindrical sleeve with internal threads. The spring element is arranged on the outer wall of the adjusting element. The outer wall of the adjusting element is substantially smooth. The spring element is wound around the outer wall of the adjusting element, such as the outer side or side. The first adjusting element guides the spring element along its length. The spring element is, for example, a tension spring or a compression spring. The spring element is, for example, provided with the aforementioned layer of flocked fibers. This at least reduces or even avoids frictional noise and clicking sounds between the first adjusting element and the spring element during operation.

[0038] The adjusting element has an integrated or embedded internal thread. The adjusting element is coupled to the drive unit and configured to convert the rotational motion of the drive unit into linear motion of the second adjusting element. Furthermore, a spring element is also reliably guided on and through the first adjusting element to assist this linear motion.

[0039] Other advantages of the invention are: the number of parts is reduced by the embedded thread in the first adjusting element of the telescopic actuator, spring buckling is eliminated, tolerance chain is reduced, and rigidity in the threaded area is increased.

[0040] In one embodiment of the drive device, the spring element extends between the inner wall of the housing portion of the housing assembly and the outer wall of the first adjusting element. The spring element is, for example, provided with the aforementioned layer made of flocked fibers. This at least reduces or even avoids frictional noise and clicking sounds during operation between the first adjusting element and the spring element, and between the spring element and the inner wall of the housing portion. The housing assembly, for example, has portions of the aforementioned housing assembly. A housing assembly for a drive device includes at least a first housing portion for accommodating a drive unit and an adjusting device drivable by the drive unit, and a second housing portion disposed downstream of the first housing portion for covering the first housing portion in the region of the adjusting device.

[0041] In one embodiment of the drive device, the adjusting elements are respectively constructed in the form of threaded rods.

[0042] In one embodiment of the drive device, one end of the spring element is supported on a step disposed on the inner wall of the first housing portion, and the other end of the spring element is supported on the opposite end of the second housing portion. The second housing portion is axially displaceable relative to the first housing portion. The second housing portion is connected to a third adjusting element. During the extension or retraction movement of the second and third adjusting elements, the second housing portion is axially, i.e., longitudinally, displaced relative to the first housing portion. The second housing portion is, for example, part of the aforementioned housing assembly. The third adjusting element is connected to the second housing portion, for example, by means of the aforementioned connecting element, which includes a notch for securing the end of a spindle. Accordingly, the third adjusting element is constructed as a threaded rod, particularly a threaded spindle, the end of which is fixedly held in the notch of the connecting element. These adjusting elements can be telescopically inserted into each other. By the rotation of the drive, particularly the first adjusting element which is fixedly disposed in the first housing portion, the second adjusting element is driven such that it is longitudinally displaced and rotated relative to the first adjusting element. By the rotation of the second adjusting element, the third adjusting element is longitudinally displaced relative to the second adjusting element. The third adjusting element does not perform any rotational movement.

[0043] A drive device having components arranged axially aligned with each other, comprising at least a housing assembly for accommodating a drive unit and an adjustment device drivable by the drive unit, wherein the adjustment device includes a first adjustment element rotatably movable, a second adjustment element longitudinally movable relative to the first adjustment element, and a third adjustment element longitudinally movable relative to the second adjustment element, wherein the first adjustment element is coupled to the drive unit, and wherein the adjustment elements are telescopically movable into each other.

[0044] Drive mechanisms are, for example, actuators, particularly linear drives, spindle drives and / or telescopic drives, especially three-stage telescopic drives.

[0045] The main advantage of this invention lies in the improved ratio between the closed and open positions of the drive mechanism. This means that, compared to conventional drives with a single threaded rod, the drive mechanism can achieve a greater stroke with a shorter length. This ensures a robust structure for the adjusting device.

[0046] In one embodiment of the drive device, the first adjusting element has a receiving cavity containing internal threads for receiving and moving the second adjusting element. The adjusting element has integrated or embedded internal threads. The adjusting element is coupled to the drive unit and configured to convert the rotational motion of the drive unit into linear motion of the second adjusting element. Furthermore, a spring element is also guided on the first adjusting element to assist this linear motion.

[0047] The housing assembly, for example, has a portion of the aforementioned housing assembly. A housing assembly for a drive device includes at least a first housing portion for accommodating a drive unit and an adjustment device drivable by the drive unit, and a second housing portion disposed downstream of the first housing portion for covering the first housing portion in the region of the adjustment device. The second housing portion is axially displaceable relative to the first housing portion. The second housing portion is connected to a third adjustment element. During the extension or retraction movements of the second and third adjustment elements, the second housing portion is axially, i.e., longitudinally displaced relative to the first housing portion. The second housing portion is, for example, part of the aforementioned housing assembly.

[0048] In one embodiment of the drive device, the spring element extends between the inner wall of the first housing portion and the outer wall of the first adjusting element. The spring element is, for example, provided with the aforementioned layer made of flocked fibers. This at least reduces or even eliminates frictional noise and clicking sounds between the first adjusting element and the spring element, and between the spring element and the inner wall of the housing portion, during operation.

[0049] In one embodiment of the drive device, the second adjusting element includes an external thread and a receiving cavity, the receiving cavity containing an internal thread for receiving and moving the third adjusting element.

[0050] In one embodiment of the drive device, the third adjusting element is constructed as a threaded rod. The third adjusting element is connected to the second housing portion, for example, by means of the aforementioned connecting element, which includes a notch for securing the end of the spindle. Accordingly, the third adjusting element is constructed as a threaded rod, particularly a threaded spindle, the end of which is fixedly held in the notch of the connecting element. These adjusting elements can be telescopically inserted into each other. The second adjusting element is driven by the rotation of the drive, particularly the first adjusting element which is fixedly arranged in the first housing portion, so that it is longitudinally displaced and rotated relative to the first adjusting element. The rotation of the second adjusting element causes the third adjusting element to be longitudinally displaced relative to it. The third adjusting element does not perform any rotational movement.

[0051] In one embodiment of the drive device, the second and third adjusting elements are each provided with at least one stop element. This prevents the corresponding adjusting element from rotating out of the corresponding adjusting element during the extended movement of the drive when the corresponding adjusting element reaches its final position.

[0052] The adjusting device is configured, for example, such that when the first adjusting element is driven longitudinally, the second adjusting element rotates into or out of the first adjusting element. Furthermore, the adjusting device is configured such that when the second adjusting element is driven longitudinally, the third adjusting element can be torsionally retracted into or torsionally extended from the second adjusting element. Attached Figure Description

[0053] The embodiments of the present invention will be described in detail with reference to the accompanying drawings. Wherein: Figure 1 This is a schematic diagram of a drive mechanism used for motor-controlled movement of vehicle components. Figure 2 This is a schematic cross-sectional view of a drive unit with coaxially arranged components. Figures 3A to 3E The diagram shows a schematic side view and cross-sectional view of an adjustment device for a drive mechanism, which includes three adjustment elements that can move longitudinally relative to each other. Figure 4A This is a schematic cross-sectional view of an adjusting device with a spring element for use in a drive mechanism. Figure 4B and 4C This is a schematic side view of an adjusting device with a spring element. Figure 5This is a schematic diagram of a spring element with a flocked fiber layer used in a drive mechanism. Figures 6A to 6D A schematic perspective view of the connecting elements used in the drive unit, and Figures 7A to 7E A schematic perspective view of a housing assembly having separate connecting elements for the drive unit.

[0054] Appendix Label Table 1. Drive unit 2. Housing assembly 2A, 2B Casing Section 2.1, 2.2 End 2.2.1 Opening 2.2.2 Snap-fit ​​components 2.2.3 Clearance Sections 2.3 and 2.4 2.5 Inner Wall 2.6 Steps 2.7 Inner side 3 Connecting elements 3.1 Spherical Seat 3.2 End 3.3 Matrix 3.4 End 3.4.1 Connection end 3.5 Notch 3.6 Retaining ring 3.6.1, 3.6.2 Stopping Zone 3.6.3, 3.6.4 Grooves 3.7 Locking elements 4 drive units 4.1 Drive Motor 4.2 Transmission Unit 4.3 Adapter 4.3.1 Bearings 5. Adjustment device 5.1 to 5.3 Adjustment elements 5.1.1 Receptacle 5.1.2 Internal Thread 5.1.3 Coupling Interface 5.1.4, 5.1.5 End 5.1.6 Outer wall 5.2.1 Receptacle 5.2.2 Internal Thread 5.2.3 External Thread 5.3.1 Spindle end 5.3.2 External Thread 6. Cable Configuration 7, 8 Stopping elements 9. Threaded inserts 10 Spring elements 10.1 Coil 10.2, 10.3 End 10.4 Surface 10.5 floors 10.6 Flocked Fiber 11 Sealing elements L longitudinal P1 Starting position P2 Middle position P3 Final Position R-type snap-fit Detailed Implementation

[0055] The same parts in all the accompanying drawings are indicated by the same reference numerals.

[0056] Figure 1 This is a schematic diagram of a drive unit 1 for adjusting a moving vehicle component (not shown in detail).

[0057] The drive unit 1 is used for operation, i.e. adjustment, particularly for opening and closing moving vehicle components, such as covers, like rear covers, or other moving vehicle components.

[0058] The drive unit 1 shown is a linear actuator, particularly a linear drive. By changing the length of the drive unit 1, the moving vehicle component can be moved, particularly pivoted, relative to a base component, such as the body that forms the opening of the vehicle, in order to open and close, for example.

[0059] The drive unit 1 includes a housing assembly 2, such as a drive housing. The housing assembly 2 has a connecting element 3 on each of its ends 2.1 and 2.2. The connecting element 3 is a fixing element for securing the drive unit 1 to the vehicle, with one end 2.1 connected to a base component and the other end 2.2 connected to a moving vehicle assembly, particularly articulated. For this purpose, the corresponding connecting element 3 has, for example, a ball seat 3.1, by which the drive unit 1 is articulated onto the vehicle and can be connected.

[0060] The drive unit 1 includes at least one for accommodating Figure 2The diagram shows a drive unit 4 and a first housing portion 2A of an adjustment device 5 that can be driven by the drive unit 4. Furthermore, the drive device 1 includes a second housing portion 2B disposed downstream of the first housing portion 2A, for covering the first housing portion 2A at least in the area of ​​the adjustment device 5. The drive device 1 is, for example, a telescopic actuator, wherein when the drive unit 4 is operated, the adjustment device 5 extends or retracts to open or close the moving vehicle assembly.

[0061] The drive unit 1 is, for example, a cylindrical linear actuator. The drive unit 1 includes, for example, a hollow cylindrical housing assembly 2.

[0062] Figure 2 This is a schematic cross-sectional view of a drive unit 1 with coaxially arranged components, wherein the second housing portion 2B is not shown.

[0063] For example, the first housing portion 2A is divided into two sections 2.3 and 2.4. A drive unit 4 is arranged in the first section 2.3. An adjustment device 5 is arranged in the second section 2.4 downstream of the first housing portion 2A. The drive unit 4 includes a drive motor 4.1, a transmission unit 4.2 arranged longitudinally L downstream of the drive motor 4.1, and an adapter 4.3 arranged longitudinally L downstream of the transmission unit 4.2 for connecting the adjustment device 5. The adapter 4.3 is used to transmit the rotational motion introduced by the transmission unit 4.2 to the adjustment device 5. For example, the adapter 4.3 includes a pre-mounted bearing 4.3.1. The second housing portion 2B is arranged on the first housing portion 2A in a torsional and longitudinally displaceable manner. The second housing portion 2B surrounds the first housing portion 2A at least in the region of the adjustment device 5, i.e., the second section 2.4 of the first housing portion 2A. The second housing portion 2B functions as a cover element or a cover. Furthermore, the second housing portion 2B is connected to the adjusting device 5, such that when the adjusting device 5 is driven, the second housing portion 2B moves relative to the first housing portion 2A in the longitudinal direction L. The second housing portion 2B can move partially overlapping the first housing portion 2A. In the open position of the mobile vehicle assembly, the second housing portion 2B moves away from the first housing portion 2A in the longitudinal direction L. In this open position of the mobile vehicle assembly, the second section 2.4 is substantially exposed. In the closed position of the mobile vehicle assembly, the second section 2.4 of the first housing portion 2A is completely covered by the second housing portion 2B.

[0064] For example, the cable configuration 6 extends from the end 2.1 of the first housing portion 2A and is used to connect to the drive motor 4.1 inside the drive unit 1 with a power connection cable configuration 6 (not shown in detail) arranged in the vehicle.

[0065] Figures 3A to 3E The schematic side view and cross-sectional view are of the adjustment device 5 for the drive device 1, which includes three adjustment elements 5.1 to 5.3 that can move longitudinally relative to each other. Figure 3A The adjusting device 5 shown is in the initial position P1, specifically the fully retracted position. Figure 3B The adjusting device 5 shown is in the middle position P2, specifically the partially extended position. Figure 3C The adjustment device 5 shown is in its final position P3, specifically the fully extended position. Figure 3D This is a cross-sectional view of the adjusting device 5. Figure 3E This is an exploded view of the adjusting device 5.

[0066] The adjustment device 5 includes a rotatably movable first adjustment element 5.1. The first adjustment element 5.1 is fixed in position within the housing of the drive device 1. The first adjustment element 5.1 is only rotatably movable, but not in the longitudinal direction L. Furthermore, the adjustment device 5 includes a second adjustment element 5.2 that is longitudinally and rotatably movable relative to the first adjustment element 5.1. The second adjustment element 5.2 is telescopically movable into and out of the first adjustment element 5.1. Additionally, the adjustment device 5 includes a third adjustment element 5.3 that is longitudinally movable relative to the second adjustment element 5.2. The third adjustment element 5.3 is telescopically movable into and out of the second adjustment element 5.2. That is, adjustment elements 5.1 to 5.3 can be telescopically moved into each other. The third adjustment element 5.3 is torsionally connected to a corresponding connecting element 3. The spindle end 5.3.1 of the third adjustment element 5.3 is specifically connected to the connecting element 3. Therefore, the third adjustment element 5.3 is connected to the second housing portion 2B. The first adjustment element 5.1 is coupled to the drive unit 4. The adjusting device 5, particularly when viewed longitudinally L, is entirely disposed within the second section 2.4 of the first housing portion 2A. It protects the adjusting device 5 from external influences when the second housing portion 2B moves longitudinally away from the first housing portion 2A. The second section 2.4 of the first housing portion 2A is, for example, an extended neck of the first section 2.3. Viewed in the longitudinal extension direction, the adjusting elements 5.1 to 5.3 and the spindle end 5.3.1 are disposed in their final position P3 within the second section 2.4. That is, the length of the second section 2.4 corresponds to the total length of the adjusting device 5. The spindle end 5.3.1 protrudes beyond the end 5.1.5 of the first adjusting element 5.1 to connect with the connecting element 3.

[0067] The motion process is described below (see below). Figures 3A to 3CDuring operation of the drive unit 1, the drive unit 4 drives the first adjusting element 5.1, wherein the rotation of the adjusting element 5.1, particularly its rotational motion, is initiated. The second adjusting element 5.2, having a third adjusting element 5.3 disposed therein, moves out of the first adjusting element 5.1 in the longitudinal direction L. When the second adjusting element 5.2 reaches the intermediate position P2, it continues to rotate under the drive of the rotational motion of the first adjusting element 5.1. The third adjusting element 5.3 moves from the intermediate position P2 to the final position P3, moving out of the second adjusting element 5.2, particularly displaced in the longitudinal direction L. The corresponding housing portion 2B connected to the adjusting element 5.3 moves accordingly, particularly being pushed open or pressed away from the first housing portion 2A along the longitudinal direction L. The moving vehicle assembly is fully opened. This described three-stage drive unit achieves a large stroke with a relatively short length. To close the moving vehicle assembly, the third adjusting element 5.3 is retracted into the second adjusting element 5.2, and then the second adjusting element 5.2, in which the third adjusting element 5.3 is housed, is retracted into the first adjusting element 5.1. The adjusting element 5.3 is constructed in the form of a threaded rod or a threaded sleeve.

[0068] The first adjusting element 5.1 includes a receiving cavity 5.1.1 with internal threads 5.1.2 for receiving and moving, particularly for driving the second adjusting element 5.2. Furthermore, the first adjusting element 5.1 includes a coupling interface 5.1.3 for coupling with the drive unit 4. The coupling interface 5.1.3 is constructed in the form of a surrounding flange or coupling ring. The coupling interface 5.1.3 is arranged on the end 5.1.4 of the first adjusting element 5.1 facing the transmission unit 4.2. The coupling interface 5.1.3 is connected to the adapter 4.3 on one side (see [link]). Figure 4A On the side opposite to the drive unit 4, the coupling interface 5.1.3 abuts against at least one step 2.6, which is molded, for example, on the inner wall 2.5 of the first housing portion 2A. The step 2.6 is, for example, some structure of the inner wall 2.5. For example, two opposing steps 2.6 may be provided on the inner wall 2.6. The step 2.6 may be constructed in the form of a flange or a retaining ring surrounding the inner wall 2.5. Therefore, the first adjusting element 5.1 is axially fixed and rotatably supported in the drive unit 1, i.e., in the housing assembly 2. On the end 5.1.5 of the first adjusting element 5.1 opposite to the coupling interface 5.1.3, the outer wall 5.1.6 is constructed in a tapered shape. The outer wall 5.1.6 is, for example, frustoconical in the region of the end 5.1.5. For example, an internal thread 5.1.2 is embedded in the region of the end 5.1.5.

[0069] The second adjusting element 5.2 includes a receiving cavity 5.2.1 with an internal thread 5.2.2 for receiving and moving, particularly for driving the third adjusting element 5.3. Furthermore, the second adjusting element 5.2 includes an external thread 5.2.3 corresponding to the internal thread 5.1.2 of the first adjusting element 5.1.

[0070] The third adjusting element 5.3 is constructed as a simple threaded rod or threaded spindle and has an external thread 5.3.2 corresponding to the internal thread 5.2.2 of the second adjusting element 5.2. The third adjusting element 5.3 is connected to the second housing portion 2B, for example, by means of a connecting element 3. For example, the spindle end 5.3.1 is generally T-shaped. The spindle end 5.3.1 forms an interface for connecting the third adjusting element 5.3 to the connecting element 3.

[0071] The second adjusting element 5.2 also includes a stop element 7. The stop element 7 is T-shaped. The stop element 7 is fixed in the receiving cavity 5.2.1. The third adjusting element 5.3 also includes a stop element 8. The stop element 8 is T-shaped. The stop element 8 is fixed, for example, in a recess formed on the end of the third adjusting element 5.3 opposite to the end of the main shaft 5.3.1. In this way, when the corresponding adjusting elements 5.2 and 5.3 reach their final positions, they are prevented from rotating out of the corresponding adjusting elements 5.1 and 5.2 during the driven extension movement. In other words, by means of the corresponding stop elements 7 and 8, the axial longitudinal displacement of the corresponding adjusting elements 5.2 and 5.3 beyond their respective final positions P3 is prevented.

[0072] In one improved embodiment, the adjusting device 5 may have a threaded insert 9. A threaded insert 9 having internal threads and an outer surface suitable for installation may be arranged in the receiving cavity 5.2.1 of the second adjusting element 5.2 (e.g., Figure 3E (As shown).

[0073] Figure 4A This is a schematic cross-sectional view of an adjusting device 5 for a drive device 1, which has a spring element 10. Figure 4B The spring element 10 shown is in the starting position P1 of the adjusting device 5. Figure 4C The spring element 10 shown is in the final position P3 of the adjusting device 5.

[0074] The adjusting device 5 includes a rotatably movable first adjusting element 5.1, which is configured to drive a second adjusting element 5.2 that is longitudinally movable relative to the first adjusting element 5.1. The adjusting device 5 may have a third adjusting element 5.3 that is longitudinally movable relative to the second adjusting element 5.2. A spring element 10 is arranged around the first adjusting element 5.1 and held in a guided manner between the first adjusting element and the housing assembly 2. For example, the spring element 10 is a tension spring or a compression spring. For example, the coil 10.1 of the spring element 10 is wound around the outer wall 5.1.6. That is, the first adjusting element 5.1 is configured to guide the spring element 10 along its length, which is used as a supplement to the third adjusting element 5.3 to optionally assist the longitudinal movement of the second adjusting element 5.2. The first adjusting element 5.1 has a substantially smooth and planar outer wall 5.1.6.

[0075] One end 10.2 of the spring element 10 is supported on a step 2.6 arranged on the inner wall 2.5 of the first housing portion 2A. The step 2.6 forms both abutment and support surfaces for the first adjusting element 5.1, particularly its coupling interface 5.1.3, and for the spring element 10. The step 2.6 forms abutment and support surfaces on both sides of the longitudinal direction L. The other end 10.3 of the spring element 10 is supported on the end 2.2 of the second housing portion 2B opposite to the step 2.6. The end 10.3 of the spring element 10 is supported in particular on the end 3.2 of the corresponding connecting element 3 that extends into the second housing portion 2B. The spring element 10 is pre-tensioned in the starting position P1 of the drive device 1. To assist the linear movement of the drive device 1 toward the final position P3, the spring element 10 is relaxed. When the drive device 1 moves back from the final position P3 to the starting position P1, the spring element 10 is pre-tensioned in the opposite direction of its elastic force, for example, compressed.

[0076] The spring element 10 is arranged and guided between the inner wall 2.5 of the first housing portion 2A and the outer wall 5.1.6 of the first adjusting element 5.1. This eliminates the need for the spring guide sleeve commonly found in conventional drive systems, thereby reducing installation time, installation difficulty, and material costs.

[0077] like Figure 5As schematically shown, the spring element 10 may, for example, have a surface 10.4, which is at least partially provided with a layer 10.5 composed of flocked fibers 10.6. The spring element 10 has at least this layer 10.5 composed of flocked fibers 10.6 on surface 10.4. In an improved embodiment of the spring element 10, the coil 10.1 is entirely provided with the layer 10.5 composed of flocked fibers 10.6. The layer 10.5, particularly the coating, reduces the free clearance between the spring element 10 and other parts of the drive unit 1. Flocking can at least reduce or even eliminate potentially harmful noise that may occur when the spring element 10 moves. Furthermore, it can at least reduce or even eliminate frictional noise and clicking sounds during operation between the first adjusting element 5.1 and the spring element 10, and between the spring element 10 and the inner wall 2.5 of the first housing portion 2A.

[0078] Figures 6A to 6D This is a schematic perspective view of the connecting element 3 used for the drive device 1. Figure 6A The installation steps for arranging the spindle end 5.3.1 of the connecting element 3 are shown.

[0079] The connecting element 3 includes at least one base 3.3 having a first end 3.4, which is an engagement and fixing interface for engaging with a vehicle base component (not shown in detail). The end 3.4 has, for example, the aforementioned ball seat 3.1. Furthermore, the base 3.3 includes a second end 3.2 having a recess 3.5 exposed perpendicular to the longitudinal extension direction of the base 3.3 for accommodating the spindle end 5.3.1 of the adjusting element 5.3. The recess 3.5 is generally T-shaped, for example, in a top view. The recess 3.5 is, for example, a T-groove.

[0080] The first end 3.4 is constructed as a protruding connecting end 3.4.1 or connector. The second end 3.2 includes a surrounding stop ring 3.6. The stop ring 3.6 is specifically arranged between the ends 3.2 and 3.4. The stop ring 3.6 forms, for example, a flange. The stop ring 3.6 forms, for example, the connecting region between the two sections. In the region of the stop ring 3.6, the diameter of the base 3.3 is larger than the diameter of the connecting end 3.4.1. The first end 3.2 is protruding on the surrounding stop ring 3.6. The stop ring 3.6 includes an outer stop region 3.6.1 (viewed along the longitudinal direction L) and an inner stop region 3.6.2 (viewed along the longitudinal direction L). The diameter of the outer stop region 3.6.1 is larger than the diameter of the first end 3.4. The diameter of the inner stop region 3.6.2 is larger than the diameter of the outer stop region 3.6.1. Furthermore, the stop ring 3.6 includes two grooves 3.6.3 and 3.6.4 disposed between the stop regions 3.6.1 and 3.6.2. The grooves 3.6.3 and 3.6.4 are constructed around the base 3.3. The grooves 3.6.3 and 3.6.4 are constructed, for example, as slots. The grooves 3.6.3 and 3.6.4 each have different diameters, but both are smaller than the diameters of the corresponding stop regions 3.6.1 and 3.6.2. Viewed longitudinally L, the stop ring 3.6 has a stepped shape. The function of the stop ring 3.6 will be described later. The grooves 3.6.3 and 3.6.4 are disposed between the stop region 3.6.2 and the stop ring 3.6.

[0081] The connecting element 3 also includes a locking element 3.7 for anti-torsional fixing of the spindle end 5.3.1 of the adjusting element 5.3. The locking element 3.7 has a shape corresponding to the notch 3.5. The locking element 3.7 may have a shape that allows it to be precisely inserted into the notch 3.5. The locking element 3.7 is used to close the spindle end 5.3.1 in a shape-fitting and / or compression-fitting manner after it has been inserted into the notch 3.5. The locking element 3.7 is generally T-shaped. The notch 3.5 is, for example, constructed on the side opposite to the spherical seat 3.1. Figure 6C For example, the intermediate mounting position is shown, where the spindle end 5.3.1 has been inserted into the notch 3.5. Figure 6D The final installation position is shown, in which the locking element 3.7 completely closes the recess 3.5. With the locking element 3.7 inserted into the recess 3.5, the outer surface of the locking element 3.7 is flush with the outer surface of the recess 3.5.

[0082] Figures 7A to 7E This is a schematic diagram of a housing assembly 2 having a separate connecting element 3 for the drive unit 1. Figure 7A This is an exploded view of the second housing part 2B, the connecting element 3, and the sealing element 11. Figure 7B and 7C Different perspective views of the second housing portion 2B on which the connecting element 3 is installed. Figure 7DAn enlarged view of the interface of the connecting element 3 on the second housing part 2B, and Figure 7E This is a cross-sectional view of the second housing portion 2B on which the connecting element 3 is installed.

[0083] The housing assembly 2 includes a first housing portion 2A (not shown in detail here) for accommodating the drive unit 4 and an adjustment device 5 that can be driven by the drive unit 4. The housing assembly 2 includes a second housing portion 2B (shown in detail here), which is partially movably arranged to overlap with the first housing portion 2A. An opening 2.2.1 is formed on the end 2.2 of the second housing portion 2B, through which the separate connecting element 3 partially passes, wherein the connecting element 3 snaps into the end 2.2 of the second housing portion 2B in its final installed position. The connecting element 3 is configured to completely close the opening 2.2.1 to protect the interior of the second housing portion 2B from external influences.

[0084] The first housing portion 2A may also be provided with a separate connecting element 3 in the same manner. The snap-fit ​​R is formed, for example, by a snap-fit ​​connection between the end 2.2 of the second housing portion 2B and the connecting element 3 through a shape fit and / or a pressing fit, such as a clamping, locking, and / or tight clamping connection.

[0085] A snap-fit ​​element 2.2.2 is arranged on the opening 2.2.1. In the illustrated embodiment, the second housing portion 2.2 includes, for example, four identical snap-fit ​​elements 2.2.2 in the region of the opening 2.2.1. In the final installed position, the snap-fit ​​elements 2.2.2 snap into the grooves 3.6.3 constructed on the outer periphery of the connecting element 3. The end 2.2 of the second housing portion 2B has snap-fit ​​elements 2.2.2 extending in the direction of the opening 2.2.1. The end 2.2 may, for example, have an edge, which is provided with snap-fit ​​elements 2.2.2, for example, by having grooves and / or bulges constructed therein. The snap-fit ​​elements 2.2.2 are constructed to be reversibly deformable. The snap-fit ​​elements 2.2.2 are, for example, clip elements, clamping elements, and / or snap-fit ​​elements. During installation, the connecting element 3 is inserted through the opening opposite the end 2.2 of the hollow cylindrical housing portion 2B. End 3.4 with connecting end 3.4.1 passes through opening 2.2.1 until the outer stop region 3.6.1 reaches beyond end 2.2 of housing portion 2B. As the outer stop region 3.6.1 passes through, the snap-fit ​​element 2.2.2 deforms and / or deflects in the mounting direction (bending to the right when viewed longitudinally L) until the snap-fit ​​element 2.2.2 snaps into the groove 3.6.3 of connecting element 3. This deformation characteristic can be achieved by forming a gap 2.2.3 between the snap-fit ​​elements 2.2.2 respectively. That is, the snap-fit ​​elements 2.2.2 are separated from each other by gaps 2.2.3 or slits on opening 2.2.1 respectively. The end 2.2 of housing portion 2B includes snap-fit ​​elements 2.2.2 and gaps 2.2.3 alternately surrounding opening 2.2.1. In the illustrated embodiment, four snap-fit ​​elements 2.2.2 and four gaps 2.2.3 are provided on opening 2.2.1. In the final installed position, the stop area 3.6.1 partially abuts against the latching element 2.2.2. For example... Figure 7E As shown, the snap-fit ​​element 2.2.2 snaps (especially tensions, clamps and / or holds) in the recess 3.6.3 located therebetween, particularly between the outer stop area 3.6.1 and the inner stop area 3.6.2, in the final installed position.

[0086] To ensure a snap-fit ​​engagement R, specifically to tension the snap-fit ​​element 2.2.2 within the groove 3.6.3, a sealing element 11 is provided. In the final installed position, the sealing element 11 is arranged between the inner side 2.7 (e.g., inner wall) of the end 2.2 and the connecting element 3. The connecting element 3 specifically includes a groove 3.6.4 for receiving the sealing element 11. The groove 3.6.4 is formed between the groove 3.6.3 for the snap-fit ​​element 2.2.2 and the inner stop region 3.6.2. The stop region 3.6.2, for example, forms a support region for supporting the sealing element 11. The sealing element 11 is configured to ensure a reliable snap-fit ​​connection or reliable snap-fit ​​engagement R between the housing portion 2B and the connecting element 3. In an improved embodiment, the stop region 3.6.2 forms a support region for supporting the spring element 10.

Claims

1. A driving device (1), comprising: The housing assembly (2) is coaxially aligned with each other, the drive unit (4) is and the adjustment device (5) is. The housing assembly (2) is configured to coaxially house the drive unit (4) and the adjustment device (5) that can be driven by the drive unit (4). The adjusting device (5) includes a rotatably movable first adjusting element (5.1), a longitudinally movable second adjusting element (5.2) relative to the first adjusting element (5.1), and a longitudinally movable third adjusting element (5.3) relative to the second adjusting element (5.2). The first adjusting element (5.1) is disposed at a fixed position in the housing assembly (2) and coupled to the drive unit (4), wherein the first adjusting element, the second adjusting element and the third adjusting element are capable of moving into each other in a telescopic manner, wherein the drive unit (4) is disposed in the first section of the housing assembly (2) and the adjusting device (5) is disposed in the second section of the housing assembly; During the operation of the drive device (1), the drive unit (4) drives the first adjustment element, wherein the second adjustment element and the third adjustment element disposed or housed in the second adjustment element move out of the first adjustment element in the longitudinal direction; When the second adjusting element reaches the middle position, the second adjusting element continues to rotate, driven by the rotational movement of the first adjusting element, so as to move the third adjusting element from the middle position out of the second adjusting element and into the final position; The third adjusting element (5.3) includes a stop element (8), which is fixed in a notch formed on the end of the third adjusting element (5.3) opposite to the end of the main shaft (5.3.1).

2. The drive device (1) according to claim 1, wherein the first adjusting element (5.1) has a receiving cavity (5.1.1) and the receiving cavity includes an internal thread (5.1.2) for receiving and moving the second adjusting element (5.2).

3. The drive device (1) according to claim 1 or 2, wherein the second adjusting element (5.2) includes an external thread (5.2.3) and a receiving cavity (5.2.1), the receiving cavity including an internal thread (5.2.2) for receiving and moving the third adjusting element (5.3).

4. The drive device (1) according to claim 1 or 2, wherein the third adjusting element (5.3) is constructed as a threaded rod.

5. The drive device (1) according to claim 1 or 2, wherein the second adjusting element (5.2) is provided with at least one other stop element (7).

6. The drive device (1) according to claim 1 or 2, wherein the drive unit (4) includes a drive motor (4.1), a gear unit (4.2) disposed downstream of the drive motor (4.1) in the longitudinal direction, and an adapter (4.3) disposed downstream of the gear unit (4.2) in the longitudinal direction for coupling the adjustment device (5).

7. The driving device (1) according to claim 1, wherein, The drive device (1) is a linear drive, a spindle drive, and / or a telescopic drive.

8. A drive device (1), comprising at least - Housing assembly (2) for accommodating drive unit (4) and adjustment device (5) that can be driven by said drive unit (4). The adjusting device (5) includes a first adjusting element (5.1) that is rotatably movable, a second adjusting element (5.2) that is longitudinally movable relative to the first adjusting element (5.1), and a third adjusting element (5.3) that is longitudinally movable relative to the second adjusting element (5.2). The first adjusting element (5.1) is longitudinally fixed and rotatably disposed in the second part (2.4) of the housing assembly (2) and coupled to the drive unit (4), which is disposed in the downstream first part (2.3) of the housing assembly (2) in the longitudinal direction (L). A spring element (10) for assisting the longitudinal movement of the second adjusting element (5.2) surrounds the first adjusting element (5.1) and is guided and held between the first adjusting element and the housing assembly (2), wherein the first adjusting element (5.1) is constructed as a threaded sleeve. in, The third adjusting element (5.3) includes a stop element (8) fixed in a notch formed in the third adjusting element (5.3) at the end opposite to the end of the spindle (5.3.1).

9. The drive device (1) according to claim 8, wherein the spring element (10) extends between the inner wall (2.5) of the housing portion (2A) of the housing assembly (2) and the outer wall (5.1.6) of the first adjusting element (5.1).

10. The drive device (1) according to claim 8 or 9, wherein one end (10.2) of the spring element (10) is supported on a step (2.6) arranged on the inner wall (2.5) of a housing portion (2A) of the housing assembly (2), and the other end (10.3) of the spring element (10) is supported on the end (2.2) of another housing portion (2B) opposite to the step (2.6).

11. The drive device (1) according to claim 8 or 9, wherein the drive unit (4) includes a drive motor (4.1), a gear unit (4.2) disposed downstream of the drive motor (4.1) in the longitudinal direction, and an adapter (4.3) disposed downstream of the gear unit (4.2) in the longitudinal direction for coupling the adjustment device (5).

12. The driving device (1) according to claim 8, wherein, The drive device (1) is a linear drive, a spindle drive, and / or a telescopic drive.

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