Suspension frame for a vehicle seat, in particular a suspension seat and / or commercial vehicle seat, and such a vehicle seat

Abstract

Swing frame (120) for a vehicle seat (100), comprising at least a subframe (210) and a swing arm (202a, 202b) movable relative to the subframe (210), which is articulated at least at a lower swing arm end (202.1) to the subframe (210) via a crossbar (230 to 260), wherein at least a position detection device (400) for detecting an assumed relative position of the crossbar (230 to 260) is arranged in the subframe (210), and wherein the crossbar (230 to 260) is movable along with the swing arm (202a, 202b) about a pivot axis (252), wherein the crossbar (230 to 260) comprises a cavity (256) in which a magnet carrier (408) is attached.

Description

[0001] The invention relates to a sprung frame for a vehicle seat, in particular a sprung seat and / or a commercial vehicle seat, comprising at least a subframe and a rocker arm movable relative to the subframe, which is articulated at least at a lower end of the rocker arm via a crossbar on the frame, as well as a vehicle seat. State of the art

[0002] From EP 2 321 149 B1, a vehicle seat, in particular a commercial vehicle seat, is known, comprising a scissor frame capable of oscillating in a main oscillation direction, which has an upper frame, two first arms and two second arms which intersect in pairs on a scissor axis extending transversely to the seat, wherein the two first arms are connected to each other at one end by means of a transverse tube extending transversely to the seat, which is rotatably mounted on the upper frame by means of at least one bearing device, wherein horizontal oscillations of the upper frame in the longitudinal direction of the seat are undamped by at least one oscillation device at small deflections and damped by the bearing device at large deflections.

[0003] Furthermore, a swing-capable and height-adjustable vehicle seat is known from DE 10 2010 026 015 A1. DE 20 2011 005 606 U1 describes a seat with a Hall sensor. Task

[0004] The invention is based on the objective of improving a sprung frame of the type mentioned above, in particular enabling a simple measurement of a height, especially a seat height, in a sprung seat, and providing a corresponding vehicle seat. Solution

[0005] This problem is solved according to the invention by a sprung frame for a vehicle seat, in particular a sprung seat and / or a commercial vehicle seat, comprising at least a subframe and a rocker arm movable relative to the subframe, in particular capable of oscillation, which is articulated at least at a lower end of the rocker arm via a crossbar to the frame, wherein at least a position detection device for detecting an assumed relative position of the crossbar is arranged in the subframe, wherein the crossbar is movable when the rocker arm is moved about an axis of rotation.

[0006] By arranging at least one position detection device in the subframe to detect an assumed relative position of the crossbar, wherein the crossbar can be moved along with the rocker arm around a pivot axis, the current height, in particular seat height, of the vehicle seat, especially a suspension seat, can be monitored in a simple manner.

[0007] A suspension seat or oscillating suspension system is a seat or suspension element that can deflect, for example, due to uneven road surfaces. The suspension seat or oscillating suspension system can counteract unpleasant shocks on rough roads, for example, by dampening them. This can increase seating comfort, for example, on longer journeys.

[0008] The vehicle seat can, for example, be a suspension seat. The suspension frame can be a suspension system.

[0009] The arrangement of the position detection device within the subframe allows for a pre-assembled or pre-assembled and optionally testable module. Furthermore, this arrangement enables space-saving use of the available installation space.

[0010] Advantageous embodiments, which can be used individually or in combination with each other, are the subject of the dependent claims.

[0011] For example, a level control system can be provided, whereby the deflection of the swing arm or suspension frame and / or the current height position of the vehicle seat can be determined by detecting the relative position of the crossbar resulting from a movement of the swing arm. If, for example, the actual height value deviates from a target value, usually due to deflection of the swing arm or suspension frame, the level control system can be activated to counteract the deflection, so that the actual value returns to the target value. The level control system can, for example, include at least a control unit and a controllable suspension device.

[0012] The position detection device can be configured to determine a deflection of the swing arm and / or a height, in particular seat height, of the vehicle seat based on the detected relative position of the crossbar.

[0013] Furthermore, the height adjustment of the vehicle seat can be improved by determining, for example monitoring, the current displacement and / or the current height position. Depending on the new height to be set, the target value can be changed so that the level control treats the current actual value as a deviation from the target value and adjusts the suspension frame to the desired new height.

[0014] The lower end of the swing arm can be connected to the crossbar in a rotationally fixed manner. This allows the crossbar to follow the movement, for example the deflection, of the swing arm.

[0015] In a further development, the crossbar for moving the swing arm can be controlled. For different height positions of the vehicle seat, the crossbar can be adjusted by a specific angle. For example, the crossbar can be rotated by 26° to adjust the height position.

[0016] The position detection device can be arranged in a pivot area of ​​the crossbar in and / or on the subframe. In particular, the position detection device can be arranged completely within a cavity of the subframe. Furthermore, no modifications to an existing metal structure or bearing structures of the subframe or upper frame are required.

[0017] In a cavity of the subframe, at least one bearing element can be arranged, wherein the bearing element can comprise a bearing receptacle in which the crossbar can be rotatably guided, and wherein the position detection device can be arranged at one bearing end opposite the bearing receptacle.

[0018] The position detection device can include at least one angle sensor, which may be configured to detect an angular position of the crossbar as a relative position, wherein a permanent magnet interacting with the angle sensor may be arranged on and / or in the crossbar. The position detection device can, for example, include a magnetic angle sensor. The permanent magnet may be mounted centrally in the crossbar.

[0019] The angle sensor can be arranged on the back or front of the bearing element and may include at least a circuit board and a sensor element arranged on it for measuring a rotation of the permanent magnet.

[0020] A sensor signal can be acquired non-linearly with respect to the height of the oscillating frame. The sensor signal can be acquired as an absolute signal. The detection or measurement of the rotation, in particular the angular position, of the crossbar can be performed without contact. This can reduce wear.

[0021] In a further development, the position detection device can optionally be arranged in an upper frame of the oscillating frame. In a further development, the angle sensor can be arranged in and / or on the crossbar, and the permanent magnet in and / or on the lower frame.

[0022] The seat height of a suspension seat can be measured by determining the adjustment angle. By determining the angle of the crossbar and thus the rocker arm, the current seat height can be determined.

[0023] The crossbar includes a cavity in which a magnet carrier is mounted. The magnet carrier can be attached to the cavity, for example, by at least a positive fit, a force fit, and / or a material fit. The magnet carrier can have a magnet receptacle for receiving the permanent magnet.

[0024] The swing arm can be designed to be oscillating, whereby an upper end of the swing arm can be movably guided on an upper frame in the longitudinal direction of the seat via a sliding element, whereby the height of the upper frame relative to the lower frame can be changed by a movement of the swing arm.

[0025] At least one pair of pivoting arms can be provided, whereby the arms can cross at a scissor axis and can pivot relative to each other about the scissor axis. The pair of arms can be designed as an adjustable scissor mechanism, for example, a height-adjustable scissor mechanism.

[0026] The oscillating frame can be designed as a scissor mechanism. For example, the frame can have two pairs of arms arranged transversely. Two opposing arms of the pairs can be connected via the crossbar. By determining the angle of the scissor mechanism, particularly the height-adjusting arms, the current seat height can be determined. By detecting the deflection during the oscillation of the scissor mechanism, which can be measured by the position sensing device, the current height position, for example, an actual height value, can be determined with a high degree of accuracy, ultimately improving both leveling and height adjustment.

[0027] The invention further relates to a vehicle seat, in particular a suspension seat and / or commercial vehicle seat, with at least one seat section and a suspension frame connected to the seat section according to the preceding description, wherein the suspension frame comprises at least one subframe and a rocker arm that is movable relative to the subframe, in particular capable of oscillation, and which is articulated to the frame at least at one lower end of the rocker arm via a crossbar. At least one position detection device for detecting an assumed relative position of the crossbar is arranged in the subframe of the suspension frame, wherein the crossbar is movable when the rocker arm is moved about a pivot axis. By means of the position detection device, the current height of the suspension frame, in particular the seat height of the vehicle seat, especially a suspension seat, can be determined by means of an angle measurement in the oscillation kinematics.The vehicle seat can be a commercial vehicle seat, for example a so-called CV seat.

[0028] The suspension frame can be a scissor-type frame that is oscillating and optionally height-adjustable. The seat height can be determined by measuring the angle of the scissor mechanism. The suspension frame, particularly the scissor-type frame, can comprise a lower frame, an upper frame positioned above it, and a pair of crossed arms on each side. A scissor axis can connect the two crossing points of the arms and simultaneously define the axis around which the arms can pivot relative to each other. The arms can each be hinged at their rear end to the lower or upper frame and each have sliding elements, such as rotatable rollers, at their front end, by means of which they can be guided in or on the upper or lower frame in the longitudinal direction of the seat.This movement of the swing arms can change the height of the upper frame above the lower frame, also known as the height of the scissor frame. Figures and embodiments of the invention

[0029] The invention is explained in more detail below with reference to advantageous embodiments illustrated in the figures. However, the invention is not limited to these embodiments. The figures show: Fig. 1: schematic representation of a vehicle seat with a longitudinal adjustment device according to the state of the art, Fig. 2: Schematically, a perspective front view of a swing frame according to the invention, in particular a swing-capable scissor frame, according to a first embodiment, Fig. 3: schematically a perspective rear view of the swing frame according to the invention, Fig. 4: schematically an enlarged section in the area of ​​a subframe of the swing frame according to the invention, Fig. 5: schematically a further enlarged section in the area of ​​the subframe of the swing frame according to the invention, Fig. 6: Schematic perspective view of a cover element for covering a position detection device of the oscillating frame according to the invention, Fig. 7: Schematically, in a perspective view, a rod end of a crossbar according to a first embodiment, Fig. 8: schematically in perspective view a magnetic carrier that can be arranged or is arranged in a crossbar according to a first embodiment, and Fig. 9: Schematic perspective view of an angle sensor of the position detection device according to a first embodiment.

[0030] Corresponding parts are marked with the same reference symbols in all figures.

[0031] One in the Fig. A vehicle seat 100, schematically depicted in relation to the prior art, is described below using three mutually perpendicular spatial directions. A longitudinal direction x of a vehicle seat 100 installed in a vehicle runs largely horizontally and preferably parallel to a longitudinal direction of the vehicle, corresponding to the vehicle's usual direction of travel. A transverse direction y, perpendicular to the longitudinal direction x, is also horizontally oriented in the vehicle and runs parallel to a transverse direction of the vehicle. A vertical direction z runs perpendicular to the longitudinal direction x and perpendicular to the transverse direction y. In a vehicle seat 100 installed in a vehicle, the vertical direction z preferably runs parallel to a vertical axis of the vehicle.

[0032] The position and direction designations used, such as front, rear, top, and bottom, refer to the viewing direction of an occupant seated in vehicle seat 100 in a normal seating position, whereby the vehicle seat 100 is installed in the vehicle, in a suitable position for passenger transport with the backrest 104 upright, and oriented in the direction of travel as usual. However, the vehicle seat 100 can also be installed or moved in a different orientation, for example, transversely to the direction of travel. Unless otherwise described, the vehicle seat 100 is designed to be mirror-symmetrical about a plane perpendicular to the transverse direction y.

[0033] The backrest 104 can be pivotally mounted on a seat section 102 of the vehicle seat 100. For this purpose, the vehicle seat 100 can optionally include a fitting 106, in particular an adjustment fitting, swivel fitting, locking fitting or wobble fitting.

[0034] The position and direction specifications used, such as radial, axial, and circumferential, refer to a rotation axis 108 of the fitting 106. Radial means perpendicular to the rotation axis 108. Axial means in the direction of or parallel to the rotation axis 108.

[0035] The vehicle seat 100 can optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 comprises, for example, a rail arrangement 112 with a first rail element 114 and a second rail element 116. The first rail element 114 is adjustable in the longitudinal direction x relative to the second rail element 116. The first rail element 114 is attached to the seat part 102. The second rail element 116 is attached to a structural element of a vehicle, for example, a vehicle floor.

[0036] For clarity, the first rail element 114 will be referred to as the upper rail 114 in the following description. This upper rail 114 (also called running rail or carriage) is assigned to the vehicle seat 100 and designed to support this vehicle seat 100. The second rail element 116 will be referred to as the lower rail 116. The lower rail 116 is fixed and, for example, connected to the floor of a vehicle.

[0037] Furthermore, a swing frame 120, for example a swing kinematics and / or height adjustment kinematics, can be arranged between the vehicle seat 100, in particular between the seat part 102, and the longitudinal adjustment device 110 and / or a vehicle floor.

[0038] The oscillating frame 120 can have a joint arrangement (I, II, III, IV), for example a four-bar linkage, on each side of the seat part 102. The joint arrangements (I, II, III, IV) can be essentially identical in design.

[0039] The seat section 102, together with the suspension frame 120, can be moved by means of two pairs of rails, thus allowing the vehicle seat 100 to be adjusted translationally in the longitudinal direction x. The two pairs of rails are offset from each other in the transverse direction y and arranged parallel to each other.

[0040] Fig. Figure 2 schematically shows a perspective view of a oscillating frame 120 according to the invention, in particular an oscillating and optionally height-adjustable oscillating frame 120.

[0041] The swing frame 120 is in particular a scissor frame 200.

[0042] The swing frame 120, in particular the scissor frame 200, comprises at least one in Fig. The frame consists of three visible lower frames 210 and one upper frame 220. The lower frame 210 and the upper frame 220 are spaced apart from each other in the vertical direction z. The swing frame 120 comprises a pair of crossed swing arms 202a, 202b on each side. The pairs of swing arms 202a, 202b movably connect the two frames. The pairs movably support the upper frame 220 on the lower frame 210.

[0043] A scissor axis 204 connects the two intersection points and simultaneously defines the axis about which the arms 202a, 202b can pivot relative to each other. The arms 202a, 202b are each articulated at their rear end 202.1 to the lower frame 210 and the upper frame 220, respectively, and each has sliding elements (not shown in detail), such as rotatable rollers, at their front end 202.2, by means of which they are guided in or on the upper frame 220 and the lower frame 210, respectively, in the longitudinal direction x. This movement of the arms 202a, 202b changes the height of the upper frame 220 above the lower frame 210, hereinafter also referred to as the height of the scissor frame 200.

[0044] For example, by means of a level control device not shown in detail, for example comprising at least a gas spring and a damper, the scissor frame 200 can be a oscillating system which increases seating comfort.

[0045] Fig. Figure 3 schematically shows a perspective rear view of the swing frame 120 according to the invention, in particular the scissor frame 200.

[0046] The two pairs of crossed wings 202a, 202b each comprise a first wing 202a and a second wing 202b, with the inside of the first wing 202a and the outside of the second wing 202b facing each other.

[0047] The first two swing arms 202a are rigidly connected to each other at their upper, in this case rear, swing arm ends 202.1 by means of a crossbar 230 and are movably, in particular rotatably, hinged to the upper frame 220. The first swing arms 202a are connected to each other at their lower, in this case front, swing arm ends 202.2 by means of a further crossbar 240. The crossbar 240 can be movably guided on both sides of the lower frame 210 in the longitudinal direction x by means of a bearing device (not shown in detail).

[0048] The second swing arms 202b are connected to each other at their lower, in this case rear, swing arm ends 202.1 by means of a crossbar 250 and are movably, in particular rotatably, articulated to the subframe 210. The crossbar 250 can be mounted directly on the subframe 210 and / or by means of a bearing element 300. At their upper, in this case front, swing arm ends 202.2, the second swing arms 202b are also connected by means of a crossbar 260 and, for example, guided movably on both sides in the longitudinal direction x by means of a bearing device (not shown) in the upper frame 220.

[0049] The crossbars 230 to 260 each run parallel to the scissor axis 204 in the transverse direction y. By a movement, in particular a pivoting movement, of the first swing arms 202a relative to the second swing arms 202b about the scissor axis 204, the height of the upper frame 220 above the lower frame 210 changes.

[0050] An unspecified control device may be provided and may serve both for level control, i.e. maintaining a set height of the scissor frame 200 during driving operation, and optionally for height adjustment of the scissor frame 200.

[0051] To determine the current height position of the oscillating frame 120, in particular the scissor frame 200, at least one position detection device 400 is provided. The at least one position detection device 400 can be arranged, in particular, in one of the pivot areas 270 between one of the crossbars 230 to 260 and the lower frame 210 or the upper frame 220. This allows the position detection device 400 to be arranged in the lower frame 210 and / or the upper frame 220 in a space-saving manner.

[0052] By determining the current height position of the scissor mechanism 200, the current height position of the vehicle seat 100 can be derived. This allows for improved level control and / or height adjustment when the scissor mechanism 200 experiences deflections, for example, due to uneven road surfaces. The deflection can therefore be monitored using the position detection device 400.

[0053] The scissor mechanism 200 can be displaced longitudinally x by means of the longitudinal adjustment device 110. The vehicle seat 100 can furthermore have a seat frame (not shown in detail) which can be attached to the upper frame 220. In a further embodiment, the seat frame, for example a seat surface, can be formed as a single unit with the upper frame 220. In this case, the scissor mechanism 200 can be directly hinged to the seat frame of the vehicle seat 100 and connect it to the lower frame 210.

[0054] Fig. Figure 4 schematically shows an enlarged section in the area of ​​a subframe 210 of the swing frame 120 according to the invention, in particular the scissor frame 200.

[0055] The subframe 210, and optionally also the superframe 220, can have a substantially U-shaped or C-shaped profile. The subframe 210 can have a profile, for example in the form of a rail profile, which is at least partially open in the transverse direction y towards the crossbar 250 and accommodates the associated bearing element 300 for the rotatable mounting of the crossbar 250. The subframe 210 can also have a closed profile with at least one through-opening for the passage of the crossbar 250. The bearing element 300 can, for example, be arranged in the cavity 212 of the subframe 210. The cavity 212, in particular a profile opening, can be covered at the profile end of the subframe 210 by a cover element 214.

[0056] For example, the position detection device 400 can be arranged at the profile end of the subframe 210 and in the pivot area 270 of the crossbar 250 and / or in the area of ​​the bearing element 300.

[0057] The position detection device 400, arranged in the lower frame 210, or optionally in the upper frame 220, is designed to detect the relative position of the crossbar 250. The crossbar 250 can be moved about a pivot axis 252 when the associated arms 202b move, for example, pivoting due to deflection or height adjustment. The lower or rear ends 202.1 of the arms 202b are non-rotatably connected to the crossbar 250. When the scissor frame 200 is deflected or adjusted in height, the crossbar 250 can move along with it, in particular pivoting or rotating. The respective rear end 202.1 of the arms 202b can be connected to the crossbar 250 by at least a material-fit, positive-fit, and / or force-fit connection.

[0058] The axis of rotation 252 runs parallel to the scissor axis 204 and to the transverse direction y.

[0059] Fig. Figure 5 schematically shows a further enlarged section in the area of ​​the subframe 210 of the swing frame 120 according to the invention, in particular the scissor frame 200. The cover element 214 has been omitted in the illustrated embodiment for clarity.

[0060] The bearing element 300 is arranged in a cavity 212 of the subframe 210. The bearing element 300 comprises a bearing receptacle 302, for example, a bearing receptacle 302 extending through the transverse y direction. The crossbar 250 is rotatably guided in the bearing receptacle 302. The position detection device 400 is arranged at an end opposite the bearing element 300 in the cavity 212 of the subframe 210. The bearing element 300 can flush-cover an open profile side of a U-shaped or C-shaped subframe profile. The bearing element 300 can have a bearing housing 304. A first side of the bearing element 300, for example, a first housing side of the bearing housing 304, can cover the open profile side of the subframe profile. A second side of the bearing element 300 opposite the first side, in particular a second housing side of the bearing housing 304, can have a bracket 306.The bracket 306 can have at least two opposing retaining elements 306.1. The retaining elements 306.1 can be designed as retaining arms. The retaining elements 306.1 can form a retaining rail.

[0061] The position detection device 400 comprises at least one angle sensor 402, which is configured to detect the angular position of the crossbar 250 as a relative position. The position detection device 400 comprises at least one permanent magnet 404, which interacts with the angle sensor 402. The angle sensor 402 can determine the angular position of the crossbar 250 by detecting a magnetic field.

[0062] The angle sensor 402 can be mounted in the holder 306 of the bearing element 300. For example, the angle sensor 402 can be fixed between two retaining elements 306.1 of the holder 306, for example by clamping or snapping them in place. Alternatively, the angle sensor 402 can be attached to an inner surface of the subframe 210.

[0063] The permanent magnet 404 can be arranged in and / or on a rod end 254 of the crossbar 250. In particular, the permanent magnet 404 can be arranged in and / or on a rod end 254 facing the angle sensor 402. The permanent magnet 404 can be fixed in and / or on the rod end 254 in a rotationally fixed manner.

[0064] When the crossbar 250 rotates about its axis of rotation 252, the permanent magnet 404 moves with it, thereby changing the magnetic field orientation, which can be detected by the angle sensor 402. This allows the angular position of the crossbar 250 to be determined.

[0065] Fig. Figure 6 schematically shows in perspective a cover element 214 for covering a position detection device 400 of the oscillating frame 120 according to the invention, in particular the scissor frame 200.

[0066] In this embodiment, the cover element 214 is provided with a holder 216 for receiving the angle sensor 402.

[0067] The cover element 214 can have longitudinally extending retaining elements 216.1. The bracket 216 can have at least two opposing retaining elements 216.1. The retaining elements 216.1 can be designed as retaining arms. The retaining elements 216.1 can form a retaining rail. The angle sensor 402 can be attached in the bracket 216 of the cover element 214. For example, the angle sensor 402 can be fixed between two retaining elements 216.1 of the bracket 216, for example by clamping or snapping them in place. Alternatively, the angle sensor 402 can be attached to an inner surface of the subframe 210.

[0068] The cover element 214 can include a feedthrough 218, for example an opening, for the passage of a connecting cable 406 of the position detection device 400, in particular the angle sensor 402. The connecting cable 406 can be a cable tail and / or a cable bundle.

[0069] Fig. Figure 7 schematically shows in a perspective view a rod end 254 of a crossbar 250 according to a first embodiment.

[0070] The crossbar 250 can be designed as a tube. The crossbar 250 can include a cavity 256 or at least an end recess. The permanent magnet 404 can be fixed in the cavity 256 in a rotationally fixed manner. For this purpose, a magnet carrier 408 can be provided, for example. The magnet carrier 408 can be made of plastic, for example polyamide (PA). The magnet carrier 408 can be fixed in the cavity 256 of the crossbar 250 in a rotationally fixed manner.

[0071] The magnet carrier 408 can have at least one magnet receptacle 408.1 in which the permanent magnet 404 can be arranged or is arranged.

[0072] The permanent magnet 404 can, for example, be made from a conventionally suitable magnetic material, such as ferrite.

[0073] Fig. Figure 8 shows schematically in perspective view a magnetic carrier 408 which can be arranged or is arranged in a crossbar 250 according to a first embodiment.

[0074] The magnet carrier 408 can be a hollow cylindrical sleeve. The magnet carrier 408 can comprise a base body 408.2, for example, a sleeve body. The magnet receptacle 408.1 can, for example, be a cavity extending through the base body 408.2. The magnet carrier 408 can have a number of projecting, in particular radially projecting, fastening elements 408.3 on an outer circumference. The fastening elements 408.3 can, for example, be locking arms, locking lugs, or locking hooks. The magnet carrier 408 can be arranged in the cavity 256 of the crossbar 250 by means of the fastening elements 408.3 in a form-fitting manner. The fastening elements 408.3 can be arranged at an angle to the outer circumference of the magnet carrier 408. This simplifies clamping, in particular jamming, of the magnet carrier 408 in the cavity 256. The magnet carrier 408, in particular the base body 408.2. A groove 408.4, which indicates the polarity of the permanent magnet 404, can be provided. This simplifies the correct alignment of the permanent magnet 404 during assembly.

[0075] Fig. Figure 9 schematically shows in perspective view an angle sensor 402 of the position detection device 400 according to an embodiment.

[0076] The angle sensor 402 can comprise a printed circuit board 402.1, for example a circuit board, and / or a suitable carrier, wherein the printed circuit board 402.1 and / or the carrier can be provided with at least one sensor element 402.2 for detecting a change in the polarity of the permanent magnet 404 relative to the angle sensor 402 and a connecting cable 406. The angle sensor 402 can be designed to be particularly space-saving and compact and can be easily installed or integrated into a frame part of the subframe 210 or the superframe 220. Reference symbol list 100 vehicle seats 102 Seat section 104 Backrest 106 fittings 108 Rotation axis 110 Longitudinal adjustment device 112 Rail arrangement 114 First rail element (top rail) 116 Second rail element (bottom rail) 120 swing frame 200 scissor frame 202a, 202b Swing arm 202.1 Swing end, in particular rear / lower swing end 202.2 Swing end, in particular front / upper swing end 204 Scissor axis 210 subframes 212 Cavity 214 Cover element 216 bracket 216.1 Holding element 218 Implementation 220 upper frames 230 crossbar 240 crossbar 250 crossbar 252 Rotary axis 254 rod end 256 cavity 260 crossbar 270 Linkage range 300 bearing element 302 Bearing intake 304 Bearing housing 306 bracket 306.1 Retaining element 400 Position detection device 402 Angle sensor 402.1 Printed circuit board 402.2 Sensor element 404 Permanent magnet 406 Connection cable 408 magnetic carriers 408.1 Magnetic recording 408.2 Basic body 408.3 Fastener 408.4 Nut x Longitudinal direction y transverse direction z Vertical direction I, II, III, IV joint arrangement

Claims

[1] Swing frame (120) for a vehicle seat (100), comprising at least a subframe (210) and a swing arm (202a, 202b) movable relative to the subframe (210), which is articulated at least at a lower swing arm end (202.1) to the subframe (210) via a crossbar (230 to 260), wherein at least a position detection device (400) for detecting an assumed relative position of the crossbar (230 to 260) is arranged in the subframe (210), and wherein the crossbar (230 to 260) is movable along with the swing arm (202a, 202b) about a pivot axis (252), wherein the crossbar (230 to 260) comprises a cavity (256) in which a magnet carrier (408) is attached. [2] Swing frame (120) according to claim 1, characterized by , that the position detection device (400) is set up to determine a deflection of the rocker arm (202a, 202b) and / or a height of the vehicle seat (100) based on the detected relative position of the crossbar (230 to 260). [3] Swing frame (120) according to claim 1 or 2, characterized by , that the lower end of the swing arm (202.1) is connected to the crossbar (250) in a rotationally fixed manner. [4] Swing frame (120) according to one of claims 1 to 3, characterized by , that the position detection device (400) is arranged in a pivot area (270) of the crossbar (230 to 260) in and / or on the subframe (210). [5] Swing frame (120) according to one of claims 1 to 4, characterized by , that at least one bearing element (300) is arranged in a cavity (212) of the subframe (210), which comprises at least one bearing receptacle (302) in which the crossbar (230 to 260) is guided rotatably, wherein the position detection device (400) is arranged at an end opposite the bearing element (300) in the cavity (212) of the subframe (210). [6] Swing frame (120) according to one of claims 1 to 5, characterized by, that the position detection device (400) comprises at least one angle sensor (402) which is configured to detect an angular position of the crossbar (230 to 260) as a relative position, wherein in particular a permanent magnet (404) cooperating with the angle sensor (402) is arranged on and / or in the crossbar (230 to 260). [7] Swing frame (120) according to one of claims 1 to 6, characterized by , that the rocker arm (202a, 202b) is designed to be oscillating, wherein an upper rocker arm end (202.2) of the rocker arm (202a, 202b) is movably guided on an upper frame (220) in the longitudinal direction (x) via a sliding element, and wherein the height of the upper frame (220) relative to the lower frame (210) can be changed by a movement of the rocker arm (202a, 202b). [8] Swing frame (120) according to one of claims 1 to 7, characterized byat least one pair of oscillating arms (202a, 202b) which intersect at a scissor axis (204), wherein the arms (202a, 202b) are pivotable about the scissor axis (204) relative to each other. [9] Vehicle seat (100), in particular suspension seat and / or commercial vehicle seat, with at least one seat part (102) and a suspension frame (120) connected to the seat part (102) according to one of claims 1 to 8. [10] Vehicle seat (100) according to claim 9, characterized by , that the swing frame (120) is a swinging scissor frame (200).

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