Covering device for covering guide rail of longitudinal adjuster, longitudinal adjuster for vehicle seat, and vehicle seat

Abstract

The invention relates to a cover device (20) for a guide rail (12) of a longitudinal adjuster (10) of a vehicle seat (1), the cover device (20) comprising a cover (22) having an opening (24), the opening (24) being at least partially closable by at least one cover element (30) guided in the cover (22), and at least one protection unit (50) for protecting the cover element (30). The invention also relates to a longitudinal adjuster (10) and to a vehicle seat (1) comprising such a longitudinal adjuster (10).

Description

Technical Field

[0001] The invention relates to a covering device for a guide rail of a longitudinal adjuster for a vehicle seat, having the features of the preamble of claim 1. The invention also relates to a longitudinal adjuster for a vehicle seat, in particular a motor vehicle seat, having the features of the preamble of claim 11, and to a vehicle seat. Background Art

[0002] DE102016224588A1 has disclosed a longitudinal adjuster with a guide rail assembly, which includes a lower guide rail and an upper guide rail movably connected to the lower guide rail. The document also discloses a covering (such as a rubber covering, a brush-type covering, etc.), which is connected to the outer contour of the lower guide rail and is arranged to cover at least a portion of the inner contour. The covering may include a rubber belt that is connected to the outer contour and is arranged on the upper portion of each side of the inner contour. The covering may generally extend parallel to the longitudinal axis of the inner contour. The covering covers at least a portion of the corresponding intermediate space of the lower guide rail. The covering is used to limit / prevent dust and / or fabric from entering or falling into the corresponding intermediate space of the lower guide rail.

[0003] EP1209024A1 and EP1207073A1 have disclosed a longitudinal adjuster for a vehicle seat having a lower rail fastened to a vehicle floor and having an upper rail movably attached to the lower rail. The longitudinal adjuster has a cover panel formed of a synthetic resin material and having two soft lip portions on the inner side forming a gap.

[0004] JPH10-315809A has disclosed a longitudinal adjuster for a vehicle seat, which has an elongated lower rail fastened to the vehicle floor and an upper rail attached to the seat and movably mounted on the lower rail. On the upper surface of the lower rail, two longitudinal elastic covers are provided, which are loosely abutted against each other and pass through a contact gap through which the upper rail passes. Summary of the invention

[0005] question

[0006] The invention solves the problem of improving a covering device for covering the guide rails of a longitudinal adjuster of the type mentioned in the introduction, in particular to provide a durable covering device for the guide rails which is completely protected against the ingress of foreign bodies or other destructive objects. The invention also solves the problem of providing a longitudinal adjuster for a vehicle seat, in particular a longitudinal adjuster with a durable cover for the upwardly open region of the guide rails of the longitudinal adjuster, and to provide a corresponding vehicle seat.

[0007] Solution

[0008] According to the invention, the problem is solved by a covering device for covering a guide rail of a longitudinal adjuster of a vehicle seat, wherein the covering device has a panel with an opening, wherein the opening can be closed at least partially by a covering element with rolling-up capability guided in the panel. According to the invention, the covering device has at least one protection unit for protecting the covering element, in particular for protecting the rolling-up function and the unrolling function of the covering element with rolling-up capability.

[0009] Since at least one protection unit is provided for protecting the covering element with roll-up capability, in particular its roll-up function and its unrolling function, malfunctions of the covering element with roll-up capability are avoided.

[0010] The covering device is particularly used for covering long rails, in particular long floor rails, which for example extend in the longitudinal direction of a vehicle, such as a truck, over two or more rows of seats. The covering device is provided in order to avoid contamination of the long rails, in particular of spindles arranged in said long rails. For a carriage or a top rail connected to one of the adjustable seats, the long rail allows for an adjustment range of for example 600 mm or more.

[0011] The dependent claims relate to advantageous embodiments which can be used alone or in combination with one another.

[0012] The first protection unit is formed, for example, as a support unit which is arranged directly below the underside of the unfolded covering element. The first protection unit can be an outer protection unit which can be arranged outside the box for the covering element and, for example, in a guide rail of the longitudinal adjuster.

[0013] For example, the support unit is arranged at a predetermined spacing from the underside of the unfolded covering element, so that during normal operation the covering element can be rolled up or unfolded without friction and comes into contact with the support unit when a mechanical load acts on the surface of the covering element. By means of this contact between the covering element and the support unit, undesired deformations of the covering element, for example due to objects falling on the covering element or objects (for example the heel of a shoe) acting on the covering element, can be substantially avoided. In particular, permanent deformations of the covering element after misuse (for example due to the action of high heels on the unfolded covering element) can be avoided by the support unit on the underside of the covering element.

[0014] For example, the support unit is formed as a molded or block body, such as a solid molded body consisting of, for example, a plastic material, or as a profiled element, such as a metal bracket or a plastic bracket.

[0015] At least one support unit may, for example, be arranged in a specific area with the purpose of protecting the covering element. For example, when the covering element is in an extended or unfolded state (also referred to as an extended, spread out or unfolded covering element), the support unit may be arranged and disposed in a free space formed on the underside of the unfolded covering element. For example, the support unit may be arranged in a free space formed between the spindle end and the roll-up box of the covering element.

[0016] The second protection unit can, for example, be formed as a wiper unit (also referred to as a wiper). The second protection unit can in particular be formed as an internal protection unit arranged in a box for the covering element and / or as an external protection unit arranged outside the box for the covering element. The wiper unit can in particular be arranged to wipe or sweep the surface of the covering element, in particular in order to at least partially remove dirt from the surface of the covering element. Thus, it is not possible for dust particles or dirt particles to enter the guide rails covered by the covering device, in particular the lower guide rail and / or the spindle arranged in said guide rails. Furthermore, disturbing noises and scratches on the surface of the covering element can be avoided by such a wiper unit.

[0017] The wiper unit can be arranged, for example, in the region of the inlet of the box and / or in the box for the covering element. In particular, an external wiper unit arranged outside the box can wipe dirt off the covering element before the covering element reaches the box. Alternatively or additionally, the wiper unit can be integrated into the box as an internal wiper unit. In particular, the wiper unit can be integrated into the box base. For example, the wiper unit is integrated in an opening in the box base. Here, the internal wiper unit is configured so that the dirt wiped from the covering element by the wiper unit can be discharged from the box via the opening.

[0018] The wiper unit may be configured, for example, in the form of a brush that is always in contact with the cover element, in particular with the surface of the coil spring. The wiper unit may also be arranged and configured such that noise between the rolled-up spring regions of the coil spring is avoided.

[0019] The wiper unit can in particular be arranged to always be in contact with the covering element, for example with the surface of a coil spring, in particular a constant spring or a helical spring, regardless of whether the covering element is rolled up (also called coiled) or unrolled (also called unwound or spread out).

[0020] For example, the wiper unit is arranged to wipe or sweep the surface of the unrolled covering element (called rolled out or unrolled covering element) before it is rolled up again.

[0021] Alternatively or additionally, the wiper unit may be arranged to wipe or sweep the surface of the rolled-up covering element (also called coiled covering element) before it is unrolled (also called unrolled or rolled out).

[0022] The wiper unit can, for example, be of flexible form. For example, the wiper unit is in the form of a spring arm. The spring force of the wiper unit is, for example, configured such that the wiper unit is always in contact with the surface of the covering element. Additionally or alternatively, the wiper unit can also establish permanent contact with the covering element by geometry and elasticity. For example, the wiper unit is formed as a plastic spring element. Furthermore, an additional spring can be provided for the wiper unit, which generates a constant spring force for maintaining permanent contact with the covering element, regardless of temperature fluctuations.

[0023] The wiper unit may also have a wiper lip or a wiper edge in contact with the surface of the covering element. The wiper unit may have a flexible arm or a spring arm, on the free end of which a wiper lip or a wiper edge is provided, which is in contact, in particular permanently in contact, with the surface of the covering element. For example, the wiper lip is formed as a sharp wiper lip. In particular, the wiper lip may be formed as a sharp rubber lip. The wiper edge may be formed as a sharp wiper edge. Alternatively, the wiper edge may be formed as a brush edge and be equipped with bristles. In particular, the wiper lip extends transversely relative to the rolling-up direction or unrolling direction of the covering element and extends over the entire width of the covering element. Therefore, the covering element can remove dirt over its entire width.

[0024] According to the invention, the problem posed is also solved by a longitudinal adjuster for a vehicle seat, in particular a motor vehicle seat, having at least one first guide rail and at least one second guide rail, which is arranged to be movable relative to the first guide rail, wherein the first guide rail has a covering device according to the above description.

[0025] The first guide rail may be a floor rail that can be recessed into the vehicle floor. The first guide rail may be a guide rail that is extended relative to the second guide rail (and is also referred to as a long guide rail). The first guide rail may have a base. The first guide rail may have two limbs that protrude on opposite sides of the base. The first guide rail may have ends that are bent back inward at those ends of the limbs that are away from the base. The first guide rail may have a generally U-shaped cross-section.

[0026] The longitudinal adjuster may have a spindle drive arranged between the first guide rail and the second guide rail for moving the second guide rail relative to the first guide rail. The spindle drive may have a spindle. The spindle may have an external thread. The spindle drive may have a gear mechanism that can be driven by a motor. The gear mechanism may be held in the second guide rail.

[0027] In a first embodiment of the spindle drive, the spindle can be fixedly held in the first guide rail by two spindle holders. The spindle can be held so as to be fixed in rotation. The gear mechanism can have a spindle nut having an internal thread operatively connected to an external thread of the spindle. The gear mechanism can be moved along the spindle by being driven by a motor.

[0028] In a second embodiment of the spindle drive, the spindle may be rotatably connected to the gear mechanism at the end portion of the spindle. The spindle drive may have a spindle block fixed in the first guide rail and having an internal thread and operably connected to the external thread of the spindle. The spindle may be rotatably screwed into the spindle block. The spindle block may be movable along the driven spindle.

[0029] The covering device can be installed in the vehicle floor in a recessed manner together with the first guide rail of the longitudinal adjuster so that substantially only the upper area of ​​the panel of the covering device is visible in the vehicle. The first guide rail can be at least partially surrounded by the panel laterally. The first guide rail can be covered by the panel. The second guide rail movably supported in the first guide rail can preferably protrude upward from the opening of the panel in the direction of the vehicle seat. The opening of the panel in front of and behind the second guide rail can be covered by a covering element. The covering element can be formed as a coil spring, in particular a constant force spring or a spiral spring, which can be pulled out from a box located at the end of the first guide rail. The coil spring can be guided to the side and top of the first guide rail. The coil spring can be coupled to the second guide rail (also referred to as an upper guide rail, a slide or a carriage) so as to follow its movement and cover or close the opening in the panel of the first guide rail (also referred to as a lower guide rail or a floor guide rail).

[0030] According to the invention, the posed problem is further solved by a vehicle seat having a longitudinal adjuster according to the above description.

[0031] The guide around the first rail (lower rail) can have lateral guide tracks in which the covering element (especially the coil spring) is guided laterally. The guide is preferably located above the first rail and supported thereon (also in the case where the panel is stepped on by a vehicle occupant).

[0032] Furthermore, it is preferred that a box for the covering element (also referred to as a receiving chamber or a rolling box) formed as a coil spring is located at each of the two ends of the guide rail. The two coil springs can each be mounted in the box at a first end. The coil spring can have a tendency to relax and always present a maximum diameter in the rolled-up state. The position of the coil spring in the box can be predefined by rollers or struts.

[0033] The second end of each coil spring can be fastened (in particular mounted) on the second guide rail. If one of the coil springs is pulled due to a change in position of the second guide rail, the coil spring can be pulled out of the box. The coil spring can be spread out or unfolded (also called unwinding) around the mounting point, and the diameter of the coil spring is correspondingly reduced. In the case where the second guide rail moves backward in the direction of the box in question, the coil spring can be rolled up in the box or rolled into the box due to the spring force of the coil spring. The coil spring is arranged to be automatically rolled into the box.

[0034] The proposed solution has the advantage that a continuous panel with dimensionally stable covering elements is provided which can be quietly rolled up or unrolled.

[0035] If in each case a covering element in the form of a coil spring is arranged in the longitudinal direction toward the front and toward the rear, the forces exerted by each covering element on the second guide rail cancel each other out, so that the adjustment force of the longitudinal adjuster according to the invention is not increased relative to a longitudinal adjuster without a covering device according to the invention.

[0036] In summary, in other words, as a first protection unit, the support unit is arranged below the covering element, in particular below the coil spring or below the covering spring, to prevent the covering element, which is formed, for example, as a thin metal strip, from being permanently deformed after misuse, such as bending or deformation caused by high heels. In the area where the spindle of the power drive system is arranged, the support is provided by the spindle of the power drive system. In areas where the spindle is not present, additional support is required. In other words: a support is only required in areas of the first rail or lower rail or floor rail in which the spindle or other components, such as spindle holders, spindle nuts, etc., are not arranged, because if the spacing between the spindle and the covering element (coil spring or covering spring) or between the associated component and the covering element is not too large, the spindle itself or the associated component itself serves as such a support. The support unit (also referred to as support in short) can be realized by a metal bracket or a plastic component connected to the lower profile, in particular to the floor rail or the lower rail (first rail).

[0037] The dust wiper (wiper unit) is arranged as a second protective unit at the covering element with rolling-up capability (also referred to as a roll-up covering with a constant-force spring). The wiper is always in contact with the coil spring, in particular with a helical spring consisting of a spring steel strip, regardless of whether the coil spring is wound or unwound. This is achieved by the spring force. The coil spring can be directly generated by the geometry of the wiper, in particular a plastic spring element. Also conceivable is an additional spring that generates a constant spring force that is independent of temperature fluctuations. As a result, it is impossible for dust particles or dirt particles to penetrate the floor rail or the lower rail and reach the spindle. The wiper itself makes contact over the entire width of the spring winding. The wiper has a sharp wiper edge in order to reliably remove dirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The invention will be discussed in more detail below based on advantageous exemplary embodiments shown in the accompanying drawings. However, the invention is not limited to these exemplary embodiments. In the accompanying drawings:

[0039] Figure 1 : is a schematic diagram of a vehicle seat according to the present invention,

[0040] Figure 2 : is a perspective view of a detail of a covering device according to the invention,

[0041] Figure 3 : is a longitudinal sectional view of a detail of the covering device in the region of a storage device for a covering element of the covering device,

[0042] Figure 4 : is a longitudinal sectional view of a detail of another exemplary embodiment of a covering device in the region of a captive storage device for a covering element of the covering device,

[0043] Figure 5 : is a cross-sectional view of a covering device mounted on the guide rail of the longitudinal adjuster,

[0044] Figure 6 : is a perspective view of a covering device according to the invention mounted on a guide rail arrangement of a longitudinal adjuster,

[0045] Figure 7 : is a perspective sectional view of a detail of a covering device according to the invention having a protection unit designed as a support unit and a wiper unit,

[0046] Figure 8 : is a cross-sectional view of a covering device according to the present invention, the covering device having a protection unit designed as a support unit and a wiper unit and mounted on a guide rail arrangement,

[0047] Fig. 9 : is a cross-sectional view of a covering device according to the invention, the covering device having a protection unit designed as a support unit and a wiper unit, without showing the guide rail arrangement structure,

[0048] Fig.10 : is a perspective sectional view of a detail of a covering device according to the invention mounted on a guide rail arrangement, wherein a drive unit is mounted,

[0049] Fig.11 : is a cross-sectional view of details of the covering device according to the present invention, omitting the Fig.10 The guide rail arrangement structure and the Fig.10 The drive unit,

[0050] Fig.12: is a cross-sectional view of a box with a rolled-up covering element and a wiper unit for the covering element, and

[0051] Fig.13 : is the area of ​​the wiper unit according to Fig.12 An enlarged view of the cross-sectional view of .

[0052] In all the figures, mutually corresponding parts are denoted by the same reference numerals. DETAILED DESCRIPTION

[0053] The following description will refer to three mutually perpendicular spatial directions Figure 1 Schematically illustrated vehicle seat 1 in FIG. In the case of a vehicle seat 1 already installed in a vehicle, the longitudinal direction x extends substantially horizontally and preferably parallel to the longitudinal direction of the vehicle corresponding to the normal driving direction of the vehicle. The transverse direction y extending perpendicularly to the longitudinal direction x is likewise oriented horizontally in the vehicle and extends parallel to the vehicle transverse direction. The vertical direction z extends perpendicularly to the longitudinal direction x and perpendicularly to the transverse direction y. In the case of a vehicle seat 1 already installed in a vehicle, the vertical direction z extends parallel to the vehicle vertical axis.

[0054] The positional terms and directional terms used (such as front, rear, top and bottom) relate to the viewing direction of an occupant sitting in a normal seating position on the vehicle seat 1, wherein the vehicle seat 1 has been installed in a vehicle in a use position suitable for transporting passengers, with an upright backrest 4 and oriented in a conventional manner in the direction of travel. However, the vehicle seat 1 can also be installed in a different orientation, for example transversely to the direction of travel.

[0055] The vehicle seat 1, in particular a motor vehicle seat, has a seat part 2 and a backrest 4. The backrest 4 is adjustable in its inclination relative to the seat part 2. The vehicle seat 1 has a longitudinal adjuster 10 for adjusting the longitudinal position of the seat. The longitudinal adjuster 10 has a guide rail assembly 11 (in the Figure 6 The seat part 2 is connected (in particular screwed) to the second guide rail 14 of the longitudinal adjuster 10. A seat height adjustment device (not shown) can also be arranged between the seat part 2 and the second guide rail 14 of the longitudinal adjuster 10.

[0056] In this case, the longitudinal adjuster 10 has a second guide rail 14 with a length L2, wherein the length L1 of the first guide rail 12 is greater than the length L2 of the second guide rail 14, and in particular, the length L1 of the first guide rail 12 corresponds to a multiple of the length L2 of the second guide rail 14. The first guide rail 12 is also called a long guide rail. The second guide rail 14 is also called a slide or a slide. The longitudinal adjuster 10 is a longitudinal adjuster 10 with an extended adjustment stroke relative to conventional devices for longitudinal adjustment of seats, wherein the adjustment range for the vehicle seat 1 or for a plurality of vehicle seats 1 that can be fastened to the first guide rail 12 is larger.

[0057] The first guide rail 12 and the second guide rail 14 of the longitudinal adjuster 10 may form a first guide rail pair. The longitudinal adjuster 10 may have a second guide rail pair (not shown in the figure to provide a clearer illustration) which is preferably arranged symmetrically with respect to the first guide rail pair.

[0058] A covering device 20 is provided for covering an open area of ​​the first rail 12 (lower rail).

[0059] The covering device 20 comprises at least one covering element 30, which covers the guide rail opening 13 of the first guide rail 12 (at Figure 5 For this purpose, the covering element 30 is designed as an element with the ability to roll up, so that during the movement of the second guide rail 14 relative to the first guide rail 12, the covering element accordingly variably covers the first guide rail, in particular its guide rail opening 13 (as shown in FIG. Figure 5 shown).

[0060] exist Figure 1 In the exemplary embodiment of the covering device 20, the covering device 20 comprises two covering elements 30, each covering element 30 being fastened or detachably fastened to an end of the second guide rail 14 by a first end 30a and being supported by a second end 30b on an associated end of the first guide rail 12 so as to be able to be rolled up.

[0061] Figure 2 is a perspective view of a detail of a covering device 20 according to the invention.

[0062] The first guide rail 12, in particular the lower guide rail, comprises a panel 22 in the direction of the second guide rail 14. The panel 22 is designed as a panel frame which surrounds the guide rail opening 13 of the first guide rail 12 (in the Figure 5 ), in particular an elongated or slot-shaped guide rail opening 13. The panel 22 is located above or on the first guide rail 12. The panel 22 can thus be supported on the first guide rail 12. The panel 22 can additionally cover the side areas of the first guide rail 12.

[0063] The panel 22 may be a plastic element, in particular a plastic panel. The first guide rail 12 is in particular formed as a profiled component, in particular as a metal profiled component.

[0064] In order to cover the guide rail opening 13 (in Figure 5 ), the covering device 20 comprises a covering element 30, which is Figure 2 1 is shown in the unfolded or spread-out state and thus in the state in which it covers the guide rail opening 13 .

[0065] The panel 22 may be provided with an integrated, in particular integrally formed, guide channel 26 or a separate guide channel 26. The guide channel 26 may be formed only on the sides of the panel 22, in particular on the opposite longitudinal sides.

[0066] The guide channel 26 serves to guide the cover element 30 during adjustment of the vehicle seat 1 . The guide channel 26 is located above or on the first guide rail 12 .

[0067] The covering element 30 has outer edge portions 32. Lateral outer edge portions 32 of the covering element 30, in particular extending along the longitudinal extent of the covering element 30, are guided by lateral guide channels 26 of the panel 22, for example, when the covering element 30 is rolled up or unrolled.

[0068] Figure 3 A longitudinal section is shown of a detail of the covering device 20 in the region of a storage device, in particular a box 28, for receiving the covering element 30 in the rolled-up state.

[0069] In the present case, the covering device 20 has a first box 28 in which a covering element 30 is arranged at the rear end of the first guide rail 12 in the longitudinal direction x. The covering device 20 preferably has a second box 28, which is structurally identical to the first box 28, but is constructed or arranged mirror-symmetrically relative to the first box 28 at the front end of the first guide rail 12 in the longitudinal direction x. The second box 28 has a corresponding further covering element 30. The following description, which generally refers to "box 28", applies both to the first box 28 and to the second box 28, which is structurally identical.

[0070] The box 28 can be arranged at the end face of the first guide rail 12. Alternatively, the box 28 can also be arranged in the first guide rail 12 at the front end and the rear end of the first guide rail. In another alternative, the covering element 30 is provided without the box 28. For this purpose, corresponding rolling elements (in particular rollers, deflection rollers or struts) can be arranged (in particular integrated, for example formed integrally) in the first guide rail 12 at the front end and the rear end, for example.

[0071] The first end 30a of the covering element 30 is connected to the second guide rail 14 (eg Figure 1), in particular mounted in a receiving portion in the second rail 14. In the box 28 assigned to the covering element 30, the second end 30b of the covering element 30 is connected to the retaining device 34.

[0072] The covering device 20 is used to cover one of the guide rails 12, 14 of the longitudinal adjuster 10, in particular to cover the guide rail opening 13 (such as the first guide rail 12) of the longitudinal adjuster 10. Figure 5 ). The covering device 20 has a panel 22 with an opening 24. The covering device 20 can be mounted in a recessed manner in the vehicle floor so that only the upper area of ​​the panel 22 is visible in the vehicle. The panel 22 is an outer plastic panel.

[0073] The first guide rail 12 can additionally be at least partially laterally surrounded and covered by the panel 22. The second guide rail 14, which is movably supported in the first guide rail 12, protrudes upwardly from the opening 24 of the panel 22 in the direction of the vehicle seat 1. A guide channel 26 for guiding and holding an associated edge portion 32 of the covering element 30 is arranged to each of the two sides of the opening 24. The guide channel 26 is configured in the manner of a groove in the panel 22, such as, for example Figure 5 As shown in detail in .

[0074] Both the opening 24 of the panel 22 and the rail opening 13 of the first rail 12 can be partially closed by a covering element 30 guided in the panel 22. The at least partial covering of the opening 24 and the rail opening 13 by the covering element 30 has the following effects, for example, Fig.10 and Fig.11 The view of the spindle 60 (shown in ) arranged in the interior of the first guide rail 12 is blocked.

[0075] like Figure 3 As shown, the opening 24 of the panel 22 can extend to a small extent above the box 28. The box 28 is essentially closed at the top, preventing dust and the like from entering the box 28. In addition, a fixedly covered box 28 has the advantage that the covering element 30 cannot be inadvertently pushed downwards into the box 28 by external loads.

[0076] The covering element 30 is arranged in the associated box 28 in a rolled-in or wound-up or rolled-up state. In the inlet region of the box 28, the panel 22 preferably has a wiper element 40 as a protection unit 50 for the covering element 30. The wiper element 40 is in the present case a brush or a wiper lip, in particular a rubber lip. The wiper element 40 is in contact with the surface of the covering element 30. Thus, when the covering element 30 is pulled or pushed into the box 28, the wiper element 40 prevents dust from entering the box 28.

[0077] The covering element 30 is preferably resiliently elastic. In the present case, the covering element 30 is configured as a coil spring.

[0078] In the present example, the holding device 34 is a cylindrical shaft. The holding device 34 is fixedly arranged in the box 28. The holding device 34 can alternatively or additionally be supported so as to be rotatable. The holding device 34 is eccentrically arranged in the box 28. The holding device 34 has a receiving portion for fastening the second end 30b of the coupling element 30, in particular a groove for mounting the second end 30b.

[0079] A plurality of support elements 35, in particular a plurality of struts 36 on which rollers 38 are rotatably arranged, are arranged in the cassette 28. The support elements 35 serve to guide and support the covering element 30 when the covering element 30 is rolled up or unrolled. The struts 36 with rollers 38 are preferably arranged in the corner regions of the cassette 28 when viewed in the transverse direction y. The struts 36 with rollers 38 serve to guide or support the covering element 30. When the covering element 30 is rolled into the cassette 28, the covering element 30 can be diverted onto a corresponding circular path by the struts 36 or rollers 38.

[0080] The covering element 30, in particular in the form of a constant force spring, in particular a coil spring, has a tendency to relax and always presents a maximum diameter in the rolled-up state. The covering element 30 can be pulled out of the box 28, in particular through the slot-shaped housing opening 29, by a force F1 introduced by the second guide rail 14. In the opposite direction, the covering element 30 can be pulled or pushed into the box 28 by a force F2. The force F2 is preferably generated by the elastic preload of the covering element 30 designed as a coil spring.

[0081] Figure 4 is a longitudinal sectional view of a detail of another exemplary embodiment of a covering device 20 in the region of a controlled storage device for a covering element 30 of the covering device 20 .

[0082] The covering element 30 may be resiliently elastic.The covering element 30 may be a constant force spring, in particular a coil spring.

[0083] The covering element 30 is captive arranged in the box 28. As described above, the first end 30a of the covering element 30 can be connected to the second guide rail 14. For the captive arrangement of the covering element 30 in the box 28, the covering element 30 has a corresponding length that is longer than the predetermined required unfolded length for covering the first guide rail 12. In this case, the second end 30b of the covering element 30 can be arranged in the box 28 without any fastening. Due to its restoring force, the covering element 30 in the form of a constant force spring is held in the box 28 in a rolled-up state.

[0084] In addition, the size of the spring force of the covering element 30 is designed so that the covering element 30 is restrainedly supported in the box 28 even when it is unfolded or rolled up. In addition, the box 28 can have such a shape and / or size at least internally so that the covering element 30 is restrainedly supported in the box 28 in the rolled-up state and when it is rolled up or unfolded. For example, the box 28 can have an internal support element 35, in particular an arc-shaped protrusion 42 and / or a support 36, for guiding and supporting the covering element 30 in the box 28. The box 28 includes a housing with a housing opening 29 (in particular a slot-shaped housing opening 29), the housing opening 29 pointing to the upper second guide rail 14, and the free end 30a of the covering element 30 is led out through the housing opening 29. The size of the housing opening 29 is designed so that the covering element 30 is restrainedly supported in the box 28 with a predetermined unfolded length in both the fully rolled-up state and the unfolded state.

[0085] The covering element 30, in particular the second end 30b of the covering element 30, can alternatively or additionally be retained in the box 28 by fastening or by the above-mentioned retaining device 34. For example, the second end 30b of the covering element 30 can be detachably fastened to the inner wall of the box 28, for example interlockingly attached to (in particular clamped on) a retaining protrusion, a detent lug or a retaining groove.

[0086] Figure 5 A cross section of a covering device 20 mounted on the first guide rail 12 of the longitudinal adjuster 10 is shown.

[0087] The covering device 20 serves to cover the first guide rail 12. In particular, the upwardly directed guide rail opening 13 is covered by the covering element 30 in the unfolded state.

[0088] The covering device 20 has a panel 22 with an opening 24. The covering device 20 can be mounted in a recessed manner in the vehicle floor and can be mounted on the first rail 12 so that only the upper area of ​​the panel 22 is visible in the vehicle. The panel 22 is an outer plastic panel.

[0089] The first guide rail 12 can additionally be at least partially laterally surrounded and covered by a panel 22. To this end, the panel 22 has an extension 23 protruding vertically in the direction of the first guide rail 12. The extension 23, for example in the form of a wall, extends laterally in the longitudinal direction x relative to the first guide rail 12, in particular on both longitudinal sides of the first guide rail 12.

[0090] A guide channel 26 for guiding and holding an associated edge portion 32 of the covering element 30 is arranged to each of the two sides of the opening 24 in the panel 22. The guide channel 26 is configured in the manner of a slot in the panel 22. Two guide channels 26 are provided which extend laterally in the longitudinal direction x relative to the panel 22, in particular on the two longitudinal sides of the panel 22.

[0091] Here, each guide channel 26 may be formed on the lower side of the panel 22. Alternatively, as shown in the figure, the covering device 20 may include not only the panel 22 but also a side cover 44 for the first guide rail 12, which is arranged laterally relative to the first guide rail 12 and below the panel 22. The guide channel 26 may be configured in the form of a longitudinal groove or cutout on the end of the side cover 44 facing the panel 22, as shown in FIG. Figure 5 shown.

[0092] The opening 24 can be partially closed by a covering element 30 guided in the panel 22. The at least partial covering of the opening 24 by the covering element 30 has the effect that for example the view of the main axis of the electric regulator arranged in the interior of the first rail 12 is blocked.

[0093] Figure 6 is a perspective view of a covering device 20 according to the invention mounted on a guide rail arrangement 11 of a longitudinal adjuster 10. The guide rail arrangement 11 comprises a first guide rail 12 and a second guide rail 14.

[0094] The covering device 20 is shown in an unfolded state of the covering element 30, the first end 30a of the covering element 30 (at Figure 1 ) is designed to close or cover the opening 24 of the panel 22 and the guide rail opening 13 (in Figure 5 2. The panel 22 may comprise a fastening element 22.2 at its longitudinal end 22.1 (in particular a longitudinal end face). When installed in a vehicle, the covering device 20 may be arranged and fastened, in particular recessed and fastened, in a vehicle floor (not shown in more detail) by means of the fastening element 222.

[0095] The panel 22 comprises an extension 23 protruding vertically downwards in the direction of the first guide rail 12. The first guide rail 12 may additionally be completely or at least partially surrounded or at least partially covered laterally by the extension 23. The extension 23, for example in the form of a wall, extends laterally in the longitudinal direction x relative to the first guide rail 12, in particular on both longitudinal sides of the first guide rail 12.

[0096] Figure 7 is a perspective sectional view of a detail of a covering device 20 according to the invention for covering a first guide rail 12 on which a second guide rail 14 is movably supported.

[0097] The covering device 20 comprises a panel 22 having an opening 24. The opening 24 can be at least partially closed or covered by a covering element 30 guided in the panel 22. Figure 7In the embodiment, the covering element 30 is coupled to the second rail 14 via a corresponding coupling element 30 . 1 (eg a brake receiving portion, etc.) and a mating coupling element 14 . 1 (eg a brake hook, etc.), and covers the opening 24 between the panel 22 and the upper rail 14 .

[0098] According to the invention, the covering device 20 comprises a plurality of protection units 50. A first protection unit 50.1 is designed, for example, as a support unit 52. A second protection unit 50.2 is designed, for example, as a wiper unit 54. The wiper element 40 (at Figure 3 ) can additionally be used as a further protection unit 50 .

[0099] Each protection unit 50 serves in particular to protect the covering element 30 , in particular to protect the rolling-up function and the unrolling function of the covering element 30 .

[0100] The wiper unit 54 can be arranged in particular to wipe or sweep the surface of the covering element 30, in particular in order to at least partially remove dirt from the surface of the covering element 30. As a protective unit 50, the wiper element 40 can be arranged, for example, in the region of the inlet of the cassette 28 or on the panel 22 in the region of the inlet of the cassette 28, such as Figure 3 As shown. The wiper unit 54 can be arranged in addition or alternatively as a protective unit 50 in the box 28 for the covering element 30. The wiper unit 54 and / or the wiper element 40 can, for example, be configured in the form of a brush that is always in contact with the covering element 30, in particular the coil spring. The wiper unit 54 and / or the wiper element 40 can also be arranged and configured so that noise between the coiled spring areas of the covering element 30 in the form of a coil spring is avoided.

[0101] Figure 8 is a cross-sectional view of a covering device 20 according to the invention, which has a protection unit 50 which is designed as a support unit 52 and a wiper unit 54 and is mounted on the guide rail arrangement 11 .

[0102] The support unit 52 is arranged directly below the underside of the unfolded covering element 30 . The covering element 30 is guided on the longitudinal sides of the panel 22 .

[0103] The support unit 52 is arranged relative to the underside of the unfolded covering element 30 so that when a mechanical load acts on the surface of the covering element 30, the covering element 30 contacts the support unit 52. By such contact between the covering element 30 and the support unit 52, undesired deformations of the covering element 30, for example due to objects falling on the covering element 30 or objects (e.g. the heel of a shoe) acting on the covering element 30, can be substantially avoided. In particular, by such a fixed support unit 52 on the underside of the covering element 30, permanent deformations of the covering element 30 after misuse (e.g. due to high heels acting on the unfolded covering element 30) can be avoided.

[0104] For example, the support unit 52 is formed as a molded body 56. The molded body 56 may be solid or block-shaped in the direction of the covering element 30. For example, the molded body 56 may have a reinforcing body 56.1 in the direction of the covering element 30. The reinforcing body 56.1 may have a size corresponding to the size of the covering element 30. The reinforcing body 56.1 has a flat surface in the direction of the covering element 30. In the direction of the first guide rail 12, the reinforcing body 56.1 may be equipped with reinforcing ribs 56.2.

[0105] The support unit 52, in particular the molded body 56, can be of profiled form in the direction of the first guide rail 12. For example, the molded body 56 can have two fastening arms 56.3, which extend vertically from the reinforcement body 56.1 in the direction of the first guide rail 12. The fastening arms 56.3 engage in corresponding fastening receptacles 12.1 in the first guide rail 12.

[0106] In summary, the support unit 52, in particular the molded body 56, can be formed as a block body, such as a solid molded body, for example, consisting of plastic material. Alternatively or additionally, the support unit 52 can be designed as a molded element, such as a metal bracket or a plastic bracket.

[0107] At least one support unit 52 may be provided, for example, in a specific area in order to protect the covering element 30. For example, when the covering element 30 is in an extended or unfolded state (also referred to as an unrolled or unfolded covering element 30), the support unit 52 may be provided and arranged in a free space 58 formed on the underside of the unfolded covering element 30. For example, the support unit 52 may be arranged in a free space 58 formed between the second guide rail 14 and the box 28 of the covering element 30 (also referred to as a roll-up box).

[0108] Fig. 9 is a sectional view of a covering device 20 according to the invention having a protective unit 50 designed as a support unit 52 , a wiper element 40 and a wiper unit 54 , wherein the guide rail arrangement 11 is not shown and the first guide rail 12 is only partially shown.

[0109] The support unit 52 is arranged at a predetermined spacing 59 from the underside of the unrolled covering element 30, so that during normal operation the covering element 30 can be rolled up or unrolled further without friction and when a mechanical load acts on the top side of said covering element comes into contact with the support unit 52. In other words: for example a molded body or a plastic beam is arranged as support unit 52 below the covering element 30, which is formed, for example, as a roller spring.

[0110] Between the support unit 52 and the unfolded covering element 30 there is a small spacing 59 or a small gap, which is necessary to avoid bending of the covering element 30 in the event of misuse. Permanent deformations are thus avoided.

[0111] The support unit 52 is arranged inside the first rail 12. The support unit 52 is fastened to the first rail 12 by means of fastening arms 56.3.

[0112] Fig.10 is a perspective sectional view of a detail of a covering device 20 according to the invention mounted on a guide rail arrangement 11 , in which a drive unit 60 is mounted.

[0113] The covering device 20 is particularly used to cover the first guide rail 12, which is formed as a long guide rail and extends over two or more rows of seats in the longitudinal direction x of the vehicle (e.g. a truck). The covering device 20 is provided to avoid contamination of the long guide rail of the drive unit 60, in particular the spindle 62 arranged in the long guide rail.

[0114] The first guide rail 12 formed as a long guide rail allows, for example, the second guide rail 14 (at Figure 7 or Fig. 9 In order to achieve an adjustment range of 600 mm or more (shown in ), the second guide rail 14 is formed as a slide or top rail and is connected to one of the adjustable vehicle seats 1.

[0115] The spindle 62 serves as a carrier for the unfolded covering element 30. The spindle holder 64 also serves as a carrier for the unfolded covering element 30.

[0116] A supporting unit 52 is arranged as a protecting unit 50 in the free space 58 between the drive unit 60 and the cassette 28 for the covering element 30 in order to support and protect the covering element 30 .

[0117] Fig.11 is a cross-sectional view of a detail of a covering device 20 according to the present invention, with the Fig.10 The guide rail arrangement structure 11 is partially shown according to Fig.10 The drive unit 60 is not shown. The spindle holder 64 is not shown. Only the first guide rail 12, the box 28 for covering the element 30 and the panel 22 in the area of ​​the box 28 are shown.

[0118] In the spindle region 100, the spindle 62 serves as a protective unit 50 and a carrier for the cover element 30. In the holder region 102, Fig.10 The spindle holder 64 shown serves as a protective unit 50 and carrier for the covering element 30. The free area 103 serves to provide access to screws for fastening the first guide rail 12 in the vehicle. In the support area 104, the support unit 52 serves as a protective unit 50 and carrier for the covering element 30.

[0119] There is a relatively large spacing in the longitudinal direction x between the support region 104 and the spindle region 100, since the spindle holder 64 (in Fig.10 ) is used as a carrier in the holder area 102. The free area 103 must be small enough so that erroneous operating forces exerted on the cover element 30 from above cannot cause deformation.

[0120] Fig.12 is a sectional detail of a cassette 28 with a rolled-up covering element 30 and a wiper unit 54 for the covering element 30 .

[0121] The wiper unit 54 can be particularly arranged to always be in contact with the covering element 30, which is for example a coil spring, in particular a constant spring with a coiling capability or a helical spring with a coiling capability. In particular, the wiper unit 54 is in permanent contact with the covering element 30, regardless of whether the covering element 30 is coiled (also called wound) or unwound (also called unwound).

[0122] For example, the wiper unit 54 is arranged to wipe or sweep the surface of the covering element 30 before the covering element 30 is rolled out or unrolled and before the covering element 30 is rolled up or rolled in again.

[0123] The wiper unit 54 may be of flexible form, for example. For example, the wiper unit 54 comprises a spring arm 54 . 1 . The spring force of the wiper unit 54 , in particular the spring arm 54 . 1 , is configured, for example, such that the wiper unit 54 is always in contact with the surface of the cover element 30 .

[0124] Additionally or alternatively, the wiper unit 54 can also establish permanent contact with the cover element 30 by means of geometry and elasticity. For example, the wiper unit 54 is formed as a plastic spring element. Furthermore, an additional spring can be provided for the wiper unit 54, which generates a constant spring force for maintaining permanent contact with the cover element 30, regardless of temperature fluctuations.

[0125] The wiper unit 54 may also have a wiper lip 54.2 and / or a wiper edge 54.3 in contact with the surface of the covering element 30. For example, the wiper lip 54.2 and / or the wiper edge 54.3 are arranged on the free end of the spring arm 54.1. For example, the wiper lip 54.2 is formed as a sharp wiper lip. In particular, the wiper lip 54.2 may be formed as a sharp rubber lip. The wiper edge 54.3 may be formed as a sharp wiper edge 54.3. Alternatively, the wiper edge 54.3 may be formed as a brush edge and be equipped with bristles. In particular, the wiper lip 54.2 and / or the wiper edge 54.3 extend transversely relative to the rolling direction or the unfolding direction of the covering element 30 and extend over the entire width of the covering element 30.

[0126] The spring arm 54.1 is for example punched out of the box 28. The wiper edge 54.3 and / or the wiper lip 54.2 protrude from the spring arm 54.1 in the direction of the covering element 30. The spring arm 54.1 is inclined in the direction of the interior of the box 28 and is preloaded.

[0127] Fig.13 is the area of ​​the wiper unit 54 according to Fig.12 An enlarged view of the cross-sectional view of .

[0128] The wiper unit 54 is in particular in the form of a spring arm 54.1 which is formed as a single piece and is partially cut or stamped or formed from a wall (particularly a bottom wall) of the box 28 and has an integrated (particularly integrally formed) wiper lip 54.2 and / or wiper edge 54.3.

[0129] The spring arm 54 . 1 is inclined relative to the plane of the wall of the box 28 or the plane of the base and is preloaded so that the wiper lip 54 . 2 and / or the wiper edge 54 . 3 are always in contact with the surface of the covering element 30 .

[0130] The features disclosed in the above description, in the claims and in the drawings can be both individually and collectively important for the realization of the invention in its various embodiments.

[0131] Although the present invention has been described in detail in the drawings and the above statements, these statements are illustrative and exemplary and should not be interpreted as limiting. In particular, the selection of the proportions of the various elements shown in the drawings should not be interpreted as necessary or limiting. In addition, the present invention is not particularly limited to the exemplary embodiments discussed. Based on the above disclosure, drawings and claims, other variations of the present invention and their design will be apparent to those skilled in the art.

[0132] The use of terms such as "comprising", "having", "including" and "containing" in the claims does not exclude other elements or steps. The use of the indefinite article does not exclude a plurality. A single device may perform the functions of several units or means recited in the claims.

[0133] Reference numerals list

[0134] 1 Vehicle Seat

[0135] 2 Seat components

[0136] 4 Backrest

[0137] 10 Longitudinal adjuster

[0138] 11 Guide rail layout structure

[0139] 12 First rail

[0140] 12.1 Fastening the receiving part

[0141] 13 Rail opening

[0142] 14 Second rail

[0143] 14.1 Paired Coupling Elements

[0144] 20 Covering device

[0145] 22 Panel

[0146] 22.1 Longitudinal ends

[0147] 22.2 Fastening elements

[0148] 23 Extension

[0149] 24 Opening

[0150] 26 Guide Channel

[0151] 28 boxes

[0152] 29 Shell opening

[0153] 30 Covering elements

[0154] 30.1 Coupling Elements

[0155] 30a First end

[0156] 30b Second end

[0157] 32 Edge

[0158] 34 Holding device

[0159] 35 Support element

[0160] 36 Pillars

[0161] 38 Rollers

[0162] 40 Wiper element

[0163] 42 protrusion

[0164] 44 Side Covering

[0165] 50 protection units

[0166] 50.1 The first protection unit

[0167] 50.2 Second protection unit

[0168] 52 Support unit

[0169] 54 Wiper unit

[0170] 54.1 Spring Arm

[0171] 54.2 Wiper lip

[0172] 54.3 Wiper edge

[0173] 56 Molded body

[0174] 56.1 Strengthening the subject

[0175] 56.2 Strengthening ribs

[0176] 56.3 Fastening arm

[0177] 58 Free Space

[0178] 59 Pitch

[0179] 60 Drivers

[0180] 62 Spindle

[0181] 64 Spindle holder

[0182] 100 Spindle area

[0183] 102 Retainer area

[0184] 103 Free Zone

[0185] 104 Support Area

[0186] F1 Force

[0187] F2 Force

[0188] L1 Length of the first rail

[0189] L2 Length of the second rail

[0190] x vertical direction

[0191] y horizontal direction

[0192] z vertical direction

Claims

1. A covering device (20) for covering a guide rail (12) of a longitudinal adjuster (10) of a vehicle seat (1), wherein the covering device (20) has a panel (22) having an opening (24) which can be at least partially closed by at least one movable covering element (30) guided in the panel (22), It is characterized in that At least one protection unit (50) is provided for protecting the cover element (30).

2. The covering device (20) according to claim 1, characterized in that As a first protection unit (50.1), a support unit (52) is arranged below the underside of the unfolded covering element (30).

3. The covering device (20) according to claim 2, characterized in that The support unit (52) is arranged to have a predetermined spacing (59) from the underside of the unfolded covering element (30) so that during normal operation, the covering element (30) can be rolled up or unfolded without friction and the covering element contacts the support unit (52) when a mechanical load acts on the surface of the unfolded covering element (30).

4. The covering device (20) according to claim 2 or 3, characterized in that: The support unit (52) is formed as a profiled element, a molded body and / or a block body.

5. The covering device (20) according to any one of claims 2 to 4, characterized in that The support unit (52) is arranged in a free space (58) formed between the spindle (62) and the box (28) of the cover element (30).

6. Covering device (20) according to any one of the preceding claims, characterized in that As a second protection unit (50.2), a wiper unit (54) is provided and is arranged to wipe the surface of the covering element (30) before said covering element is rolled up or unrolled.

7. The covering device (20) according to claim 6, characterized in that The wiper unit (54) has a wiper lip (54.2) and / or a wiper edge (54.3) which is in contact with the surface of the cover element (30).

8. The covering device (20) according to claim 6, characterized in that The wiper unit (54) has a flexible arm or spring arm (54.1), at the free end of which a wiper lip (54.2) and / or a wiper edge (54.3) is provided for contact with the surface of the cover element (30).

9. The covering device (20) according to claim 7 or 8, characterized in that The wiper lip (54.2) is formed as a rubber lip.

10. The covering device (20) according to any one of claims 7 to 9, characterized in that The wiper lip (54.2) and / or the wiper edge (54.3) extend transversely to the rolling-up direction or unrolling direction and extend over the entire width of the covering element (30).

11. A longitudinal adjuster (10) for a vehicle seat (1), in particular a motor vehicle seat, wherein the longitudinal adjuster (10) comprises at least one first guide rail (12) and at least one second guide rail (14), the second guide rail (14) being arranged to be movable relative to the first guide rail (12), Features The first guide rail (12) has a covering device (20) according to any of the preceding claims.

12. A vehicle seat (1) having a longitudinal adjuster (10) according to claim 11.

Images