Seat, in particular vehicle seat
By using tensioning devices and deflection points on the leg support of the vehicle seat, the problem of uneven tension in the molded piece cover during the adjustment process is solved, and a stable improvement in the comfort of the support surface and seat is achieved.
Patent Information
- Application Number
- CN202510115451.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-05-29
- Filing Date
- 2025-01-24
- Publication Date
- 2025-07-29
AI Technical Summary
During the adjustment process of the leg support of the existing vehicle seat, the tension of the molded piece cover is uneven, resulting in insufficient comfort and stability.
The tensioning device, including the tensioning element and the deflection point, ensures that the forming member cover maintains consistent tension in two opposite directions on the support forming member, and by guiding the tensioning element at the fixing point and the deflection point, the stable tension of the forming member cover during the entire adjustment process is achieved.
During the adjustment of the leg support, the forming cover maintains constant tension, providing a stable support surface, improving seat comfort and structural compactness.
Smart Images
Figure CN120382840A_ABST
Abstract
Description
Field of the Invention
[0001] The present invention relates to a seat, in particular a vehicle seat, having at least one seat part and a leg support arranged on the seat part. Background Art
[0002] Vehicle seats with adjustable leg supports and / or calf support devices are known from the prior art. Summary of the Invention
[0003] Objective
[0004] The present invention is based on the object of improving a seat (in particular a vehicle seat) having a leg support of the type mentioned above.
[0005] Technical Solution
[0006] According to the invention, this object is achieved by a seat (in particular a vehicle seat) having the features of claim 1.
[0007] A seat according to the invention, in particular a vehicle seat, comprises at least one seat part and a leg support movably arranged on the seat part, the leg support being adjustable between an extended extended position and a retracted normal position. The leg support comprises at least one support forming part movably arranged relative to the seat part, a forming part covering arranged on the support forming part, and a tensioning device, wherein the tensioning device is configured to hold the forming part covering in tension on the support forming part in each of two opposite movement directions during movement of the support forming part relative to the seat part.
[0008] By configuring the tensioning device to hold the forming part covering in tension on the support forming part in each of two opposite movement directions while the support forming part moves relative to the seat part, a consistent tension can be maintained in the forming part covering throughout the adjustment of the support forming part. This allows the forming part covering to roll up and unroll on the support forming part while maintaining a constant tension.
[0009] The forming part covering can form a taut flat surface, in particular a bearing surface, throughout the adjustment movement of the support forming part. Such a tensioning device is advantageous for a compact and cost-effective design for maintaining the tension of the forming part covering.
[0010] Advantageous embodiments that can be used alone or in combination with each other are the subject of the dependent claims.
[0011] The tensioning device is configured to hold the forming part covering in tension on the support forming part in a first movement direction, in particular in an extending direction (in the X direction), during movement of the support forming part from the retracted normal position to the extended extended position.
[0012] The tensioning device is configured to hold the forming part covering under tension along a second movement direction, in particular along a retraction direction (in the X direction), on the support forming part during the movement of the support forming part from an extended elongated position to a retracted normal position.
[0013] The support forming part (e.g., a support molded part) can form the front seat section of the seat part. The support forming part can form an extended section of the seat part. In the normal position, the support forming part can have a support section that partially overlaps with the seat part (in particular, the front seat part section of the seat part). When the support forming part extends, the overlapping area between the support section of the support forming part and the front section of the seat part decreases.
[0014] In this case, the forming part covering can be held in place by the tensioning device such that the forming part covering is held under tension along the support forming part in two movement directions. The forming part covering can be, for example, a laminate and / or a composite laminate. The tension applied to the forming part covering can be consistently maintained over the length of the entire travel path of the support forming part. This prevents, for example, a decrease in tension in one of the movement directions during the backward movement of the support forming part.
[0015] By moving the support forming part relative to the seat part, the size of the support surface of the forming part covering for a user sitting on the seat can be adjusted.
[0016] The leg support (e.g., designed as a thigh support) includes: at least one support forming part; a forming part covering that is arranged movably (in particular, slidably) on the support forming part; and a tensioning device that is configured to hold the forming part covering movable and pre-tensioned along two opposite movement directions on the support forming part, wherein the tensioning device includes at least one tensioning element (in particular, a tensioning strip) that is fixed at least at one fastening point fixed to the seat and at one fastening point fixed to the forming part covering, and is movably guided along the forming part profile of the support forming part at least at two deflection points between the fastening points.
[0017] The deflection points can be understood as, for example, general deflection positions or deflection regions. The deflection points can be formed, for example, by suitable guiding sections or fixing sections.
[0018] The leg support (in particular, the support forming part) can form the front part of the seat part. In particular, the seat part can be designed as a multi-part structure. For example, the seat part can include a front movable seat part, in particular forming the support forming part, and a rear fixed seat part that provides a seating surface for the user of the seat.
[0019] The leg support can move, for example, 80 mm along a travel path in the X direction, in particular relative to a fixed seat part. A seat cushion or seat upholstery can be arranged on the seat part. The seat cushion or seat upholstery can be designed in particular such that the movement (in particular displacement) of the leg support in the X direction causes the seat cushion of the seat part to extend by a value of the travel path. In this process, when the support forming part extends, a forming part covering, which can include at least one foam part and / or decorative part, can slide on the support forming part. The leg support can be designed as an extension of the seat part.
[0020] To ensure that the forming part covering (for example in the form of a laminate) unfolds in a dimensionally stable manner on the support forming part, the forming part covering remains under tension during the entire movement of the support forming part.
[0021] The tensioning device can be designed as a reverse rolling mechanism. The leg support can form the forming part covering and the seat cushion extension. The leg support can also include a reversibly configured rolling mechanism for adjusting the seat depth.
[0022] Tension or length compensation is generated by the tensioning device. The tensioning element can be a tensioning strip, for example a lacing strip. As the travel path lengthens, the tension on the tensioning element can increase, where during the reverse movement of the support forming part, a reduction in the tension of the forming part covering is to be avoided. The tensioning element can be a strip, in particular a tensioning strip or belt. The tensioning element can be designed as non-flexible. It can be configured to slide along the support forming part during the movement of the support forming part relative to the seat part.
[0023] Traditionally, flexible materials and / or spring elements have been used to maintain the tension of the forming part covering, where the tension on the flexible material also increases with the length of the travel path and can be correspondingly reduced during the reverse movement.
[0024] To counteract this process and ensure consistent tension over the entire travel path, it is necessary to reverse the travel path in the X direction and simultaneously utilize the travel movement in two directions X1 and X2.
[0025] By fixing the tensioning element at least at one fastening point fixed to the seat and one fastening point fixed to the forming part covering and guiding it movably at at least two deflection points along the contour of the support forming part, the tension of the forming part covering can be maintained during the entire extension movement and retraction movement of the support forming part.
[0026] By fixing the tensioning element at least at one fastening point fixed to the seat and at one fastening point fixed to the formed part covering, and guiding it movably along the formed part contour supporting the formed part at at least two deflection points, both the extension process and the reverse extension process (in other words, the retraction process) can occur with substantially the same tension of the formed part on the formed part covering.
[0027] At least one guiding element can be formed on the supporting formed part, where the tensioning element is at least partially guided. The tensioning element can be guided along a section on the upper surface side and a section on the opposite lower surface side of the supporting formed part.
[0028] The tensioning element can conform to an S-shaped bend. The tensioning element can be arranged to extend substantially in an S-shape, especially along the formed part contour of the supporting formed part. The tensioning element can be arranged on the supporting formed part in such a way that it can be deflected at least once, preferably multiple times, especially in an S-shaped manner, at the supporting formed part. S-shaped deflection means that the tensioning element conforms to an S-shaped bending path.
[0029] The tensioning element can be fixed to a fixed part of the seat, such as a seat component. In the normal retracted position (e.g., in the retracted state), this fastening point overlaps with one of the deflection points on the movable supporting formed part along a section of the travel path.
[0030] The supporting formed part can have a first supporting section (e.g., a thigh support section), a second supporting section (e.g., a calf support section), and a connecting section connecting the supporting sections, where a first deflection point is formed at one end of the first supporting section, and a second deflection point is formed in the region of the connecting section. The connecting section can have a shape following an ergonomic curve or bend, for example, in the knee region.
[0031] The tensioning element is deflected at the first deflection point on the movable supporting formed part and guided to the second deflection point, thus forming an S-shaped bend.
[0032] The supporting formed part can have a third deflection point formed at one end of the second supporting section.
[0033] During the movement of the supporting formed part, the travel direction can be reversed, where the tensioning element is released during the extension of the supporting formed part and retracted during the reverse movement.
[0034] One end of the tensioning element can be connected to a fixed layer of the formed part covering (e.g., a decorative laminate). The tensioning element can be designed to guide the formed part covering on the supporting formed part. Description of the Drawings
[0035] The invention is explained in more detail below using advantageous exemplary embodiments shown in the accompanying drawings. However, the invention is not limited to these exemplary embodiments. In the accompanying drawings:
[0036] Figure 1 : shows a schematic diagram of a vehicle seat with a longitudinal adjustment mechanism according to the prior art,
[0037] Figure 2 : shows a perspective view of a leg support with at least one supporting shaped part, a shaped part cover and a tensioning device,
[0038] Figure 3 : shows another perspective view of the leg support,
[0039] Figure 4 : shows a perspective view of a leg support arranged on a seat part,
[0040] Figure 5 : A perspective view showing the leg support arranged on the seat part in the retracted normal position,
[0041] Figure 6 : a perspective view showing a leg support arranged on a seat part in an extended, elongated position,
[0042] Figure 7 : shows a perspective view of a support formation with two tensioning elements,
[0043] Figure 8 : shows another perspective view of the support formation,
[0044] Figure 9 : A perspective view showing the leg support in its retracted normal position,
[0045] Figure 10 : A perspective view showing the leg support in the extended position.
[0046] Components that correspond to one another are identified in all figures using the same reference numerals. DETAILED DESCRIPTION
[0047] The following uses three mutually perpendicular spatial directions to describe the prior art Figure 1 The vehicle seat 100 is schematically shown in FIG. When the vehicle seat 100 is installed in a vehicle, the longitudinal direction x extends primarily horizontally, preferably parallel to the longitudinal direction of the vehicle, which corresponds to the vehicle's normal direction of travel. The transverse direction y, which is perpendicular to the longitudinal direction x, also runs horizontally in the vehicle and parallel to the vehicle's transverse direction. The vertical direction z extends perpendicular to both the longitudinal direction x and the transverse direction y. When the vehicle seat 100 is installed in a vehicle, the vertical direction z preferably extends parallel to the vehicle's vertical axis.
[0048] The position and orientation references used (e.g., front, rear, top, and bottom) are based on the viewing direction of a passenger sitting in the vehicle seat 100 in the normal seating position, where the vehicle seat 100 is installed in the vehicle in a use position suitable for passenger transportation, and where the backrest 104 is upright and generally oriented in the travel direction. However, the vehicle seat 100 can also be installed or moved in an orientation different from the travel direction, for example, transversely to the travel direction. Unless otherwise stated, the vehicle seat 100 is symmetrically constructed with respect to a plane perpendicular to the transverse direction y.
[0049] The backrest 104 can be pivotally arranged on the seat part 102 of the vehicle seat 100. For this purpose, the vehicle seat 100 can optionally include a fitting 106, in particular an adjustment fitting, a rotation fitting, a locking fitting, or a tilting fitting.
[0050] The position and orientation references used (e.g., radial, axial, and circumferential) relate, for example, to the rotation axis 108 of the fitting 106. Radial means perpendicular to the rotation axis 108. Axial means along the direction of the rotation axis 108 or parallel to the rotation axis 108.
[0051] The vehicle seat 100 can optionally include a longitudinal adjustment mechanism 110. The longitudinal adjustment mechanism 110 includes, for example, a track device 112 having a first track element 114 and a second track element 116. The first track element 114 is adjustable relative to the second track element 116 in the longitudinal direction x. The first track element 114 is attached to the seat part 102. The second track element 116 is attached to a structural element of the vehicle, such as the vehicle floor.
[0052] For the sake of clarity, the first track element 114 is referred to as the upper track 114 in the following description. This upper track 114 (also referred to as the running track or carrier) is assigned to the vehicle seat 100 and is configured to support the vehicle seat 100. The second track element 116 is further referred to as the lower track 116. The lower track 116 is fixed and connected to, for example, the floor of the vehicle.
[0053] To enhance seat comfort, the seat part 102 can be provided with an extendable and / or movable leg support 200.
[0054] Figure 2 A perspective view of the leg support 200 is shown, which has at least one support forming member 210, a forming member cover 220, and a tensioning device 230 for tensioning the forming member cover 220 on the support forming member 210.
[0055] The seat component 102 includes a leg support 200 which is movably or adjustably arranged on the seat component 102 and is adjustable between an extended extended position 202 (as Figure 6 shown) and a retracted normal position 204 (as Figure 5 shown). The leg support 200 can be variably adjusted between the normal position 204 and the fully extended extended position 202. For example, a plurality of intermediate positions can be adopted.
[0056] The leg support 200 includes at least one support forming member 210. The support forming member 210 can be an injection molded part. The support forming member 210 can be movably arranged at the front part of the seat component 102. The support forming member 210 can form the front section of the seat component 102. The support forming member 210 can be designed to be movable relative to a seat cushion or seat lining arranged on the seat component 102, particularly on a frame section of the seat component 102, and in particular adjustable and / or extensible.
[0057] The support forming member 210 can be generally L-shaped, J-shaped or U-shaped in design. The support forming member 210 can at least have a first support section 212 and a second support section 214 which is bent relative to the first support section 212. For example, the first support section 212 can provide support for the thighs of a passenger. The second support section 214 can provide support for, for example, the knee area (e.g., the back of the knees) and / or the lower leg area.
[0058] The leg support 200 includes a forming member cover 220 which is movable relative to the support forming member 210, particularly in a sliding manner. The forming member cover 220 can be a laminate. For example, the forming member cover 220 can include at least one foam layer 222, a covering layer 224 (e.g., a decorative and / or finishing layer) and a sliding material layer 226 (e.g., a felt layer and / or a wool material layer and / or a layer made of thermo-felt). The forming member cover 220 can be partially connected to or connected to the support forming member 210. During the movement of the support forming member 210 relative to the seat component 102, particularly along the travel path 206 in the X direction, the forming member cover 220 can slide and / or roll along the surface side 216 of the support forming member 210.
[0059] The tensioning device 230 is configured to keep the forming member cover 220 movable and pre-tensioned on the support forming member 210 in two opposite directions X1 and X2. The tensioning device 230 can include at least one tensioning element 232, particularly a tensioning strip. In the illustrated exemplary embodiment, the tensioning device 230 includes two tensioning elements 232 which are arranged spaced apart from each other in the transverse direction of the support forming member 210.
[0060] Each tensioning element 232 is attached at a fastening point 234 fixed to the seat and at a fastening point 236 fixed to the formed part covering. The fastening points 234, 236 are arranged on the surface side 216. The respective fastening point 234 fixed to the seat can connect the corresponding tensioning element 232 to a seat component 102, for example to a seat frame part. The respective fastening point 236 fixed to the formed part covering can connect the corresponding tensioning element 232 to the formed part covering 220, in particular to the underside and / or the lower layer of the formed part covering 220. In particular, the respective fastening point fixed to the formed part covering 236 can connect the corresponding tensioning element 232 to the sliding material layer 226.
[0061] For example, the foam layer 222, the covering layer 224 and the sliding material layer 226 can be connected to each other, for example laminated and / or glued.
[0062] Between the respective fastening points 234, 236, the associated tensioning element 232 is movably guided along the formed part contour 240 of the support formed part 210 at least at two deflection points 238a, 238b.
[0063] The deflection points 238a, 238b can refer to a general deflection position or a deflection area. Each deflection point 238a, 238b can be formed, for example, by a suitable guiding section or attachment section.
[0064] The respective tensioning element 232 is arranged on the support formed part 210, in particular deflected such that the respective tensioning element 232 extends along the surface side 216 and along the underside 218 of the support formed part 210.
[0065] The respective tensioning element 232 is deflected in such a way that it follows a substantially S-shaped path (in cross-section) or forms an S-shaped bend. This ensures a uniform tensioning of the formed part covering 220 in two moving directions X1 and X2 over the entire travel path 206.
[0066] The respective tensioning element 232 is guided along the formed part contour 240 of the support formed part 210. The formed part contour 240 can substantially follow an L-shaped, J-shaped or U-shaped path.
[0067] The respective tensioning element 232 can be a tensioning strip, for example a fabric strip.
[0068] The respective tensioning element 232 is attached to a fixed part of the seat. In the normal state 204 of the shown leg support 200, the fastening point 234 fixed to the seat overlaps the travel path 206 by a distance at the first deflection point 238a of the movable support formed part 210.
[0069] The corresponding tensioning element 232 is redirected around a first deflection point 238a and guided back to a second deflection point 238b. The deflection points 238a and 238b can be formed by support elements. On the lower side 218 of the support forming part 210, two guide elements 250, such as guide rails and / or guide grooves, can be formed, and each tensioning element 232 is guided in one of the guide elements 250 after the first deflection. The guide elements 250 can each include a plurality of guide rollers 252.
[0070] The corresponding tensioning element 232 can be connected to the forming part covering 220 at a first fastening point 234 and extends along the upper side of the support forming part 210 in a first section. After the first deflection, each tensioning element 232 extends along the lower side of the support forming part 210 in a second section until it reaches the second deflection point 238b. At the second deflection point 238b, the corresponding tensioning element 232 partially extends along the upper side of the support forming part 210 before being redirected back to the lower side 218 of the support forming part 210 to form an S-shaped bend. At a third deflection point 238c, such as at the lower end of the support forming part 210, each tensioning element 232 can be redirected again towards the upper side 216 of the support forming part 210 to be connected to the forming part covering 220 at a second fastening point 236.
[0071] During the movement of the support forming part 210, the travel path 206 is reversed, where the corresponding tensioning element 232 is released during the extension of the support forming part 210 and retracts in the opposite direction of the movement direction X2.
[0072] Figure 3 Another perspective view of the leg support 200 is shown.
[0073] The leg support 200 includes at least one support forming part 210. The support forming part 210 can be an injection-molded part. The support forming part 210 can be movably arranged in the front part of the seat part 102. The support forming part 210 can form the front section of the seat part 102. The support forming part 210 can be configured to be movable (in particular adjustable and / or extendable) relative to a seat cushion or a seat lining arranged on the seat part 102 (in particular arranged on the frame part of the seat part 102).
[0074] The support forming part 210 can be generally L-shaped, J-shaped or U-shaped. The support forming part 210 can at least have a first support section 212 (shown in Figure 2 and a second support section 214 bent relative to the first support section 212 (shown in Figure 2as shown). For example, the first support section 212 can provide support for the passenger's thigh. The second support section 214 can provide support for, for example, the knee area (e.g., the back of the knee) and / or the calf area.
[0075] The leg support 200 includes a formed part cover 220 that is movable relative to the support formed part 210, in particular in a sliding manner. The formed part cover 220 can be a laminate. For example, the formed part cover 220 can include at least one foam layer 222, a cover layer 224 (e.g., a decorative and / or finishing layer), and a sliding material layer 226 (e.g., a felt layer and / or a wool material layer and / or a heat felt layer). The formed part cover 220 can be partially connected to or connected to the support formed part 210. During the movement of the support formed part 210 relative to the seat part 102, in particular along the travel path 206 in the X direction, the formed part cover 220 can slide and / or roll along the surface side 216 of the support formed part 210.
[0076] Figure 4 A perspective view of the leg support 200 arranged on the seat part 102 is shown.
[0077] For example, the seat part 102 can include at least one seat shell 102.1, in particular a seat cushion shell. In the front section 102.2 of the seat shell 102.1, the leg support 200 can be arranged on the seat part 102.
[0078] The formed part cover 220 can be attached to the seat part 102 at one end, for example, attached to the rear section of the seat part, in other words, attached to the rear section 102.3 of the seat part 102. For example, the formed part cover 220 can be a part of the seat cover.
[0079] The support formed part 210 includes at least a first support section 212 (e.g., a thigh support section) and a second support section 214 (e.g., a calf support section). In addition, the support formed part 210 includes a connecting section 260 that connects the support sections 212 and 214. The connecting section 260 can have a shape corresponding to an ergonomic bend or curve. The support formed part 210 can be designed to be substantially U-shaped or L-shaped.
[0080] The first deflection point 238a is located at the free end of the first support section 212. The first deflection of the tensioning element 232 occurs at the circular free end of the first support section 212. The second deflection point 238b is located in the region of the connecting section 260. In particular, the second deflection point 238b is formed by the connecting section 260. The bending point (in particular the curvature point 262) of the connecting section 260 is provided with two spaced-apart openings 264 through which, for example, the tensioning element 232 can be guided. The second deflection of the tensioning element 232 occurs at the curvature point 262 of the connecting section 260. The support forming member 210 includes a third deflection point 238c arranged at the free end of the second support section 214. The third deflection of the tensioning element 232 occurs at the circular free end of the second support section 214.
[0081] The tensioning element 232 is arranged on the support forming member 210 in such a way that the tensioning element 232 is reoriented a plurality of times on the support forming member 210, in particular in an S-shaped or wavy manner.
[0082] Figure 5 A perspective view is shown of the leg support 200 arranged on the seat part 102 in the retracted normal position 204. Figure 6 A perspective view is shown of the leg support 200 arranged on the seat part 102 in the extended position 202. The leg support 200, in particular the support forming member 210, can form the front part of the seat part 102 and can be moved, for example, 80 mm in the X direction along the travel path 206. This allows the seat cushion of the seat part 102 to extend the length of the travel path 206. The forming member cover 220 can slide on the support forming member 210 as the support forming member 210 extends. The leg support 200 can be used as a seat part extension. When the support forming member 210 extends, the first deflection point 238a moves closer to the first fastening point 234, while the second deflection point 238b moves further away from the first fastening point 234. When the support forming member 210 retracts, the distance between the first deflection point 238a and the first fastening point 234 increases, while the distance between the second deflection point 238b and the first fastening point 234 decreases. Since the tensioning element 232 follows an S-shaped bend or S-shaped profile along the support forming member 210, the movement of the support forming member 210 can maintain a substantially constant tension on the forming member cover 220 along the support forming member 210.
[0083] Figure 7 A perspective view is shown of the support forming member 210 having two tensioning elements 232, and Figure 8 Another perspective view of the support forming member 210 is shown.
[0084] The tensioning device 230 is configured to hold the formed part covering 220 under tension along two opposite directions X1 and X2 on the support formed part 210. The tensioning device 230 may include at least one tensioning element 232, in particular a tensioning strip. In the illustrated exemplary embodiment, the tensioning device 230 includes two tensioning elements 232, which are arranged spaced apart from each other along the transverse direction of the support formed part 210.
[0085] The respective tensioning elements 232 are attached at a fastening point 234 fixed to the seat and at a fastening point 236 fixed to the covering. The fastening points 234, 236 are arranged on the surface side 216. The respective fastening points 234 fixed to the seat may connect the respective tensioning elements 232 to the seat part 102, for example to a seat frame part. The respective fastening points 236 fixed to the covering may connect the associated tensioning element 232 to the formed part covering 220, in particular to the underside and / or lower layer of the formed part covering 220.
[0086] Between the respective fastening points 234 and 236, the associated tensioning element 232 is movably guided along the formed part contour 240 of the support formed part 210 at least at two deflection points 238a and 238b.
[0087] The respective tensioning elements 232 are arranged on the support formed part 210, in particular deflected, such that the respective tensioning elements 232 extend along the surface side 216 and along the underside 218 of the support formed part 210.
[0088] The respective tensioning elements 232 are deflected in such a way that they have a substantially S-shaped path (in cross-section) or form an S-shaped bend. This ensures a consistent tension of the formed part covering 220 in both movement directions X1 and X2 over the entire travel path 206.
[0089] Figure 9 A perspective view of the leg support 200 in the retracted normal position 204 is shown.
[0090] As described above, the leg support 200 includes at least one support formed part 210 movably arranged relative to the seat part 102, a formed part covering 220 arranged to slide on the support formed part 210, and a tensioning device 230. The tensioning device 230 is configured to hold the formed part covering 220 on the support formed part 210 under tension (in particular under a consistent tension) during movement of the support formed part 210 relative to the seat part 102 in either of two opposite movement directions X1 or X2.
[0091] By moving the support forming member 210 relative to the seat member 102, the support surface area of the forming member covering 220 for a user sitting on the seat 100 can be adjusted. In the retracted normal position 204, the support area 220.1 formed by the forming member covering 220 is made smaller.
[0092] One or more tensioning elements 232 of the tensioning device 230 are movably guided along the forming member contour 240 of the support forming member 210, wherein the respective tensioning elements 232 are movable with the movement of the support forming member 210 relative to the seat member 102 such that the forming member covering 220 is maintained or held under tension. The respective tensioning elements 232 can be designed as strips or bands.
[0093] In the retracted normal position 204, the forming member covering 220 lies on the support forming member 210 such that the front covering end 220.2 of the forming member covering 220 is arranged close to the third deflection point 238c.
[0094] In other words, in the retracted normal position 204, the fastening point 236 fixed to the forming member covering (which connects the forming member covering 220 to the tensioning element 232) and the third deflection point 238c are arranged close to each other.
[0095] By the extended movement of the support forming member 210 away from the seat member 102 (in the movement direction X1), the forming member covering 220 can be tensioned and / or unfolded on the support forming member 210 such that the front covering end 220.2 and / or the fastening point 236 fixed to the covering can move away from the third deflection point 238c.
[0096] Figure 10 A perspective view of the leg support 200 in the extended position 202 is shown.
[0097] In the extended position 202, the support surface 220.1 formed by the forming member covering 220 is made larger.
[0098] One or more tensioning elements 232 of the tensioning device 230 are movably guided along the forming member contour 240 of the support forming member 210, wherein the respective tensioning elements 232 are movable with the movement of the support forming member 210 relative to the seat member 102 such that the forming member covering 220 is maintained or held under tension. The respective tensioning elements 232 can be designed as strips or bands.
[0099] In the extended extended position 202, the forming part covering 220 bears against the support forming part 210 such that the front covering end 220.2 of the forming part covering 220 is arranged at a greater distance from the third deflection point 238c. As the support forming part 210 moves away from the seat part 102, the distance between the front covering end 220.2 and the third deflection point 238c increases.
[0100] In other words, in the extended extended position 202, the fastening point 236 fixed to the forming part covering (which connects the forming part covering 220 to the tensioning element 232) and the third deflection point 238c are arranged to be away from each other.
[0101] By the retraction movement of the support forming part 210 towards the seat part 102 (along the movement direction X2), the forming part covering 220 can be tensioned and / or unfolded on the support forming part 210 such that the front covering end 220.2 and / or the fastening point 236 fixed to the covering can move closer to the third deflection point 238c.
[0102] This ensures consistent tensioning of the forming part covering 220 in both movement directions X1 and X2 over the entire travel path 206.
[0103] List of reference numerals:
[0104] 100 Vehicle seat
[0105] 102 Seat part
[0106] 102.1 Seat shell
[0107] 102.2 Front section
[0108] 102.3 Rear section
[0109] 104 Backrest
[0110] 106 Fitting
[0111] 108 Rotation axis
[0112] 110 Longitudinal adjustment mechanism
[0113] 112 Track device
[0114] 114 First track element (upper track)
[0115] 116 Second track element (lower track)
[0116] 200 Leg support
[0117] 202 Extended extended position
[0118] 204 Normal position
[0119] 206 Travel path
[0120] 210 Support forming member
[0121] 212 First support section
[0122] 214 Second support section
[0123] 216 Surface side
[0124] 218 Lower side
[0125] 220 Forming member cover
[0126] 220.1 Support surface
[0127] 220.2 Front cover end
[0128] 222 Foam layer
[0129] 224 Cover layer
[0130] 226 Sliding material layer
[0131] 230 Tensioning device
[0132] 232 Tensioning element
[0133] 234, 236 Fastening points
[0134] 238a, 238b, 238c Deflection points
[0135] 240 Forming member profile
[0136] 250 Guide element
[0137] 252 Guide roller
[0138] 260 Connection section
[0139] 262 Curvature point
[0140] 264 Opening
[0141] X1, X2 Movement direction
[0142] x Longitudinal direction
[0143] y Transverse direction
[0144] z Vertical direction.
Claims
1. A seat (100), in particular a vehicle seat (100), having at least one seat part (102) and a leg support (200) movably arranged on the seat part (102), the leg support being adjustable between an extended extended position (202) and a retracted normal position (204). Characterized in that - the leg support (200) at least comprises: - a support forming part (210) movably arranged relative to the seat part (102), - a forming part covering (220) arranged on the support forming part (210), and - a tensioning device (230), - wherein the tensioning device (230) is configured to hold the forming part covering (220) under tension on the support forming part (210) in each of two opposite movement directions (X1, X2) during movement of the support forming part (210) relative to the seat part (102).
2. The seat (100) according to claim 1, It is characterized in that By moving the support forming part (210) relative to the seat part (102), the size of the support surface of the forming part covering (220) for a user sitting on the seat (100) can be adjusted.
3. The seat (100) according to claim 1 or 2, It is characterized in that The tensioning device (230) comprises at least one tensioning element (232) arranged on the support forming part (210), the at least one tensioning element having a fastening point (234) fixed to the seat part at a first end and a fastening point (236) fixed to the covering at an opposite second end.
4. The seat (100) according to claim 3, It is characterized in that The tensioning element (232) is a strip or a belt.
5. The seat (100) according to any one of claims 3 to 4, Characterized in that, The tensioning element (232) is movably guided along the forming part contour (240) of the support forming part (210), wherein the tensioning element (232) can move with the movement of the support forming part (210) relative to the seat part (102) such that the forming part covering (220) is maintained or in particular held under a constant tension.
6. The seat (100) according to any one of claims 3 to 5, It is characterized in that At least one guiding element (250) is provided on the support forming part (210), wherein the tensioning element (232) is at least partially guided.
7. The seat (100) according to any one of claims 3 to 6, It is characterized in that The tensioning element (232) is arranged on the support forming part (210) in such a way that it is deflected at least once, preferably deflected a plurality of times, in particular deflected in an S-shaped manner, on the support forming part (210).
8. The seat (100) according to any one of claims 3 to 7, It is characterized in that The support forming member (210) has at least two deflection points (238a to 238c) at which the tensioning element (232) is deflectable or deflected.
9. The seat (100) according to any one of claims 7 to 8, It is characterized in that, The support forming member (210) has a first support section (212), a second support section (214), and a connecting section (260) connecting the support sections (212, 214), wherein a first deflection point (238a) is formed at one end of the first support section (212), and a second deflection point (238b) is formed in the region of the connecting section (260).
10. The seat (100) according to claim 8, It is characterized in that The support forming member (210) has a third deflection point (238c) arranged at one end of the second support section (214).