vehicle seat

Abstract

Vehicle seat (100), comprising at least one upper frame (220) with at least two upper frame side parts (222a, 222b) arranged spaced apart from each other in the transverse direction (y) and connected to each other via at least one crossbar (230), characterized by the fact that at least one of the Upper frame side parts (222a, 222b) comprise a projecting insert element (410), wherein the insert element (410) is attached to the The upper frame side part (222a, 222b) is fastened via a screw connection (400) and projects at least partially into a cavity (236) of the crossbar (230), wherein in a crash the insert element (410) can be moved relative to the crossbar (230) into a securing position in which the insert element (410) engages with the crossbar (230).

Description

[0001] The invention relates to a vehicle seat comprising at least one transverse frame with at least two transverse frame side parts arranged at a distance from each other in the transverse direction, which are connected to each other via at least one crossbar. State of the art

[0002] Vehicle seats are known from the prior art, comprising a seat frame and a crossbar arranged on the seat frame, which is connected on both sides to side members of the seat frame. The seat frame can, for example, be part of a seat section of the vehicle seat that serves as a seating surface for a vehicle occupant.

[0003] For example, vehicle seats in which crossbars are attached to frame structures by means of screw connections are known from US 2019 / 0 210 668 A1, DE 10 2014 207 503 A1 and DE 10 2019 118 258 A1. Task

[0004] The invention is based on the objective of improving a vehicle seat of the type mentioned above, so that in the event of a crash a connection between the cross frame side parts and the crossbar is maintained in order to enable safe absorption of impact loads or crash loads. Solution

[0005] This problem is solved according to the invention by a vehicle seat according to the features specified in claim 1.

[0006] Advantageous embodiments, which can be used individually or in combination with each other, are the subject of the dependent claims.

[0007] The vehicle seat according to the invention comprises at least one upper frame with at least two upper frame side parts arranged transversely apart from each other, which are connected to each other via at least one crossbar, wherein at least one of the cross frame side parts comprises a projecting insert element. The insert element is attached to the upper frame side part via a screw connection and projects at least partially into a cavity of the crossbar.

[0008] Because the insert element is attached to the upper frame side panel via a screw connection and protrudes, at least partially, into a cavity in the crossbar, a simple, space-saving, and effective crash protection system can be provided. In particular, crash-resistant fastening of the upper frame side panels and any seat frame attached to them can be ensured. This crash protection prevents, for example, the upper frame, or the upper frame side panels, from tearing apart, such as in the event of a frontal crash.

[0009] The upper frame can, for example, be part of a vehicle seat frame. The upper frame can, for example, be an upper structural component of a height adjuster and / or suspension system. The upper frame can form a subframe or a lower structural component of the vehicle seat, such as the seat frame. In another embodiment, the upper frame can be rigidly connected to a lower frame section of the seat frame. Each upper frame side member of an upper frame of a seat adjustment system can be rigidly connected to a seat frame side member of a seat frame, such as a seat surface frame.

[0010] In an alternative training method, the upper frame side panel and the seat frame side panel can be designed as a single unit.

[0011] In a crash, the seat may be subjected to different forces, whereby the respective side panel can be largely fixed by means of a manufacturable connection between the crossbar and the insert element, for example by wedging the insert element to the crossbar.

[0012] For example, the vehicle seat comprises at least one seat frame with at least two seat frame side parts arranged laterally apart from each other, which are connected to each other by at least one crossbar. For example, at least one of the seat frame side parts can have a previously described protruding insert element.

[0013] The vehicle seat is thus locked or blocked against mechanical stresses by means of the insert element and its crash-proof, fixed connection with the crossbar, created by, for example, static friction and / or wedging.

[0014] In other words, the insert element is a crash safety element. Specifically, the insert element is a locking sleeve or a locking bolt. Using the insert element and the crossbar, a crash safety device is provided in a cost-effective and space-saving manner.

[0015] An already used vehicle seat can be retrofitted with such a crash safety device.

[0016] The insert element can be screwed to the upper frame side panel and / or the seat frame side panel, also generally referred to as the side panel, using a bolt, for example, a screw bolt or another screw connection. The bolt can be attached to the corresponding side panel via a screw connection. The insert element can be attached to the frame panel via the screw connection. The screw connection can also be used to reinforce the attachment of the insert element to the associated frame panel.

[0017] The insert element ensures the correct positioning of the screw connection between the side panel and the bolt. The insert element can be an additional component reinforcing the screw connection and capable of absorbing loads in a crash. The insert element can include a threaded opening and an internal threaded section. It can be inserted into the end face of the crossbar as a threaded insert. The insert element can also be designed as a guide bushing. The insert element is mounted in the crossbar's cavity without contact.

[0018] Because the insert element is attached to the side panel, for example, a top frame and / or seat frame, via a screw connection, particularly using a bolt, impact loads or crash loads can be absorbed via the screw connection and through the static friction and / or wedging of the insert element in and / or on the crossbar, thus increasing occupant safety. Furthermore, the stability of the vehicle seat can be ensured in the event of a crash.

[0019] In a further development, the crossbar can be held, for example, supported, at its end face within the profile, for example a C-shaped or U-shaped profile, of the upper frame side panel and / or seat frame side panel. The crossbar can extend between the upper frame side panels and / or seat frame side panels.

[0020] By screwing the insert element, particularly using the bolt, to the corresponding side panel and wedging it against the crossbar in the event of a crash, deflection and / or displacement of the insert element, and optionally also of the bolt, during loading can be largely controlled, preventing the corresponding side panel from detaching from the crossbar. The connection, and in particular the structural integrity, between the crossbar and the insert element, and thus the connection between the side panels, can be maintained under load.

[0021] A vehicle seat can be, for example, a truck seat, a commercial vehicle seat, and / or a suspension seat. A suspension seat, or oscillating suspension, is a seat or suspension element that can deflect, for example, due to uneven road surfaces. The suspension seat or oscillating suspension element can counteract unpleasant shocks on rough roads, for example, by dampening them. This can increase seating comfort, for example, on longer journeys.

[0022] The seat frame side panel and / or the upper frame side panel, hereinafter also simply referred to as the side panel, may have a threaded opening for connecting the bolt, and the crossbar may have an opening on its end face for receiving the insert element. The threaded opening of the side panel and the opening of the crossbar are aligned with each other during assembly.

[0023] An insert element is arranged in a cavity of the crossbar, projecting beyond one end face of the crossbar. The insert element can be screwed to the bolt. Alternatively, the insert element can have an integrally formed screw element at its end. For example, the insert element can have a closed end with a protruding screw element.

[0024] The insert element can be in the form of a sleeve, tube, rod, pin, or bolt. It can be an insert tube, sleeve, rod, pin, or bolt. The insert element can be made of metal and / or plastic.

[0025] The tubular or bolt-shaped insert element can be held in the cavity of the crossbar without contact or without contact.

[0026] A dimension, in particular a diameter, of the insert element is dimensioned such that the insert element can be inserted and held in the cavity of the crossbar without contact or without contact.

[0027] The outer diameter of the insert element can be smaller than the inner diameter of the crossbar. The crossbar can be hollow-cylindrical, at least at its end face.

[0028] The crossbar can be arranged to rotate for seat adjustment.

[0029] In a normal position, the insert element can be arranged in the cavity of the crossbar without contact or friction, in particular without friction. In a crash, the insert element can be moved relative to the crossbar into a locking position, in which the insert element engages with the crossbar. In a crash, the insert element can be held in the cavity of the crossbar by wedging and / or static friction.

[0030] Because the insert element protrudes into the crossbar's cavity without contact, the crossbar can be rotatably mounted without affecting the insert element. The insert element has no points of contact with the crossbar in its normal position or during normal operation. The insert element can be inserted into the crossbar's cavity without contact. In the event of an accident, the insert element can wedge itself in the crossbar, thereby distributing the load.

[0031] The insert element is fixed to the side panel. In particular, the insert element and the bolt are fixedly attached to the side panel.

[0032] In an alternative design, the bolt can include a threadless bearing section that extends through an opening in the seat frame side panel, which is fitted with a bearing bushing, for pivotal bearing arrangement. The bolt can comprise a bolt head, a threadless bearing section, and a threaded section.

[0033] The vehicle seat can comprise at least one height adjuster and / or a suspension frame with at least one upper frame and a pair of suspension arms on each side of the upper frame, wherein the upper frame can be arranged between and connected to the two seat frame side sections. The height adjuster and / or the suspension frame can, for example, have two pairs of suspension arms arranged laterally spaced apart from each other. By adjusting the suspension arms, the tilt and / or height of the vehicle seat can be set. The suspension frame can be designed as a scissor mechanism. The suspension frame can be a scissor mechanism that is capable of oscillation and optionally also height-adjustable. The vehicle seat can, for example, be a suspension seat. The suspension frame can be a suspension system.

[0034] The crossbar can extend between two upper frame side panels and rest with its ends against the facing inner surfaces of the upper frame side panels. Each upper frame side panel can be assigned to a seat frame side panel.

[0035] The crossbar can have at least one support structure on its end face and outer circumference, which radially and / or axially supports the crossbar in the profile of one of the upper frame side members. In an alternative embodiment without an upper frame, the crossbar can be radially and / or axially supported in the profile of a seat frame side member of the seat frame via the support structure.

[0036] The support structure can be fitted onto the end face of the crossbar as a support sleeve, with one end resting against the end face of the crossbar to clamp the bolt and / or insert against the crossbar. The support structure can be a bearing structure. The bearing structure can be designed to hold the crossbar movable, for example, rotatable, within the profile of the upper frame. Alternatively, the support structure can be formed as a single unit with the crossbar.

[0037] The support structure can comprise a number of radially projecting support ribs and / or a continuous wall. In a further development, the support structure can comprise a number of axially projecting support ribs.

[0038] Because the crossbar has a support structure on its outer circumference, the connection between the insert element and the crossbar, and thus between the crossbar and the corresponding side panel for load bearing, can be reinforced in the event of a crash. Figures and embodiments of the invention

[0039] 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: a perspective rear view of a vehicle seat according to the invention, Fig. 3: a schematic sectional view of a seat frame of a vehicle seat in the area of ​​a crossbar connection, Fig. 4: a schematic sectional view of a vehicle seat in the area of ​​a crossbar connection according to a further embodiment, Fig. 5: a schematic sectional view of a vehicle seat in the area of ​​a crossbar connection according to a further embodiment, and Fig. 6: Schematic representation of a vehicle seat in a state after a load has been applied.

[0040] Corresponding parts are marked with the same reference symbols in all figures.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 and designed to support the 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.

[0047] Fig. Figure 2 shows a perspective rear view of a vehicle seat 100 according to the invention.

[0048] A swing frame 200, 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.

[0049] The oscillating frame 200 can have a joint arrangement, for example a four-bar linkage, on each side of the seat section 102. The joint arrangements can be essentially identical in design.

[0050] The seat section 102, together with the suspension frame 200, 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.

[0051] The swing frame 200 can, for example, be a scissor frame.

[0052] The swing frame 200 comprises at least a subframe 210 and an upper frame 220. The subframe 210 and the upper frame 220 are arranged at a distance from each other in the vertical direction z. The swing frame 200 includes a pair of crossed swing arms 202a, 202b on each side. The pairs of swing arms 202a, 202b movably connect the subframe 210 and the upper frame 220. The pairs movably support the upper frame 220 on the subframe 210.

[0053] A scissor axis 204 connects the two intersection points and simultaneously defines the axis around which the swing arms 202a, 202b can pivot relative to each other. The swing arms 202a, 202b are each hinged at their rear end 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, by means of which they can be guided in or on the upper frame 220 and the lower frame 210, respectively, in the longitudinal direction x. This movement of the swing arms 202a, 202b changes the height of the upper frame 220 above the lower frame 210, also referred to as the height of the scissor mechanism.

[0054] For example, by means of a level control device (not shown in detail), for instance comprising at least a gas spring and a damper, the scissor frame can be a oscillating system which increases seating comfort.

[0055] 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.

[0056] The first two swing arms 202a are rigidly connected to each other at their upper, in this case rear, swing arm ends by means of a crossbar 230. The first two swing arms 202a can be connected to the upper frame 220 at their rear swing arm ends. The first swing arms 202a are connected to each other at their lower, in this case front, swing arm ends by means of another crossbar, not shown in detail.

[0057] The second swing arms 202b are connected to each other at their lower, in this case rear, swing arm ends by means of a crossbar 240 and are movably, in particular rotatably, articulated to the subframe 210. The second swing arms 202b can also be connected at their upper, in this case front, swing arm ends by means of a crossbar, which is not shown in detail.

[0058] The crossbars 230, 240 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.

[0059] In a seat without a top frame 220, the upper crossbar 230 can be connected to the seat frame 120 of the seat part 102. In the illustrated embodiment, the crossbar 230 is connected to the top frame side parts 222a, 222b of the top frame 220.

[0060] The upper frame 220 comprises at least two upper frame side sections 222a, 222b and a rear upper frame section 224 connecting the upper frame side sections 222a, 222b. Each upper frame side section 222a, 222b is assigned to a seat frame side section 122a, 122b of the seat frame 120. In particular, each of the seat frame side sections 122a, 122b is attached to each of the upper frame side sections 222a, 222b. By adjusting the swing arms 222a, 222b, the upper frame 220, and thus the seat frame 120, is adjusted relative to the lower frame 210 and / or a vehicle floor.

[0061] The upper frame 220 is arranged between the two seat frame side parts 122a, 122b.

[0062] Fig. Figure 3 shows a schematic sectional view of a seat frame 120 of a vehicle seat 100 (shown in Fig. 1) in the area of ​​a crossbar connection, in particular in the area of ​​an upper crossbar 230.

[0063] The upper frame 220 comprises at least two upper frame side parts 222a, 222b spaced apart from each other in the transverse direction y, which are connected to each other via at least one crossbar 230. At least one of the upper frame side parts 222a, 222b comprises a projecting insert element 410, in particular a crash safety element. The insert element 410 is projecting or extending from an inwardly facing side of the upper frame side part 222a, 222b. The insert element 410 is fastened to the upper frame side part 222a, 222b via a screw connection 400 and projects at least partially into a cavity 236 of the crossbar 230.

[0064] The insert element 410 is arranged in the crossbar 230 in such a way that it projects beyond an end face 232 of the crossbar 230.

[0065] In its normal position, the insert element 410 is arranged in the cavity 236 of the crossbar 230 without contact with the crossbar 230. In other words, a gap is provided between an outer circumferential surface of the insert element 410 and an inner circumferential surface of the crossbar 230, in particular its cavity 236. This allows for a simple movement space to be provided to permit wedging in the event of a crash, for example, a frontal collision.

[0066] In the event of a crash, the insert element 410 is in a locking position relative to the crossbar 230 (in Fig. (6 shown schematically) can be displaced. In the secured position, the insert element 410 engages with the crossbar 230, for example, by static friction and / or wedging. The insert element 410 is moved relative to the crossbar 230, for example, by deformation of the upper frame side panel 222a, 222b caused by an accident, for example, by twisting or pivoting. The crossbar 230 is a rigid tube arranged in the profile of the upper frame 220.

[0067] In the event of a crash, the insert element 410 is securely held in the cavity 236 of the crossbar 230 by wedging and / or static friction.

[0068] The insert element 410 is designed as a locking sleeve or locking bolt.

[0069] The insert element 410 is attached to the upper frame side panel 222a, 222b via a bolt 300. The bolt 300 is screwed to the insert element 410 and the upper frame side panel 222a, 222b.

[0070] For example, the upper frame side panel 222a, 222b includes an opening 228, such as a threaded opening, for screwing in the bolt 300. The insert element 410 includes a threaded opening 414 and an internal threaded section 416. The insert element 410 is designed as a threaded insert and is inserted into the end face of the crossbar 230. The bolt 300 includes a bolt head 302, which, when screwed into the insert element 410, rests against an outer surface of the upper frame side panel 222a, 222b facing away from the insert element 410. The insert element 410 is held in place on the upper frame side panel 222a, 222b by the bolt 300. The end face of the insert element 410 rests against an inner surface of the upper frame side panel 222a, 222b facing it.

[0071] The insert element 410 is thus connected at its end face to at least one of the upper frame side parts 222a, 222b via a bolt 300. A free end face of the insert element 410 projects into the cavity 236 of the crossbar 230.

[0072] In a further development, an insert element 410 is provided on each of the upper frame side parts 222a, 222b. Each insert element 410 can be connected to a corresponding upper frame side part 222a, 222b via a screw connection 400, in particular by means of a corresponding bolt 300. The crossbar 230 extends between the upper frame side parts 222a, 222b and the corresponding seat frame side parts 122a, 122b.

[0073] The crossbar 230, for example, is a cross tube, a crossbeam or a crossbar.

[0074] Because the insert element 410 is attached to the upper frame side panel 222a, 222b via a screw connection 400, impact loads or crash loads can be absorbed via the screw connection 400 to increase personal safety. Additionally, the insert element 410 can be wedged against and / or in the crossbar 230, preventing the upper frame side panels 222a, 222b and thus the seat frame 120 connected to them from tearing apart. The insert element 410 increases the stability of the vehicle seat 100. By screwing the insert element 410 in place, particularly using a bolt 300, deflection and / or displacement of the bolt 300 during load loading can be reduced, thus preventing the upper frame side panel 222a, 222b from separating from the crossbar 230.

[0075] Fig. Figure 4 shows a schematic sectional view of a vehicle seat 100 in the area of ​​a crossbar connection according to a further embodiment.

[0076] The crossbar 230 is arranged at the end face in the C-profile or U-profile of the upper frame side panel 222a, 222b. The crossbar 230 can be rotatably mounted in the C-profile or U-profile of the upper frame side panel 222a, 222b.

[0077] For example, it shows Fig. 4 a left-side arranged insert element 410 with a screw connection 400 on the upper frame 220, whereby it is clear that the upper frame 220 can have an identical insert element 410 on the right side.

[0078] The crossbar 230 comprises a cavity 236 with an insert element 410 arranged therein, in particular inserted, introduced or plugged in.

[0079] The insert element 410 is arranged in the crossbar 230 such that it projects beyond an end face 232 of the crossbar 230. The insert element 410 is connected to the bolt 300 in a screw connection 400.

[0080] The insert element 410 comprises a threaded opening 414 and an internal threaded section 416. The insert element 410 is designed as a threaded insert and is inserted into the end face of the crossbar 230.

[0081] The bolt 300 comprises a bolt head 302 which, when screwed together with the insert element 410, bears against an outer surface of the seat frame side part 122a, 122b facing the bolt head 302. The bolt 300 may include a threadless bearing section 304. The bolt 300 comprises a threaded section 306 which can be brought into thread engagement with, or is brought into engagement with, the internal threaded section 416 of the insert element 410.

[0082] The crossbar 230 can extend section by section through a profile of the upper frame 220, in particular the upper frame side panel 222a, 222b, at its end face. The upper frame side panel 222a, 222b can, for example, have a substantially U-shaped profile. The upper frame side panel 222a, 222b can, for example, comprise two parallel, opposing legs 226a and a web 226b connecting the legs 226a. An opening 228 for passing through and / or screwing in the bolt 300 can be formed in the web 226b. The upper frame side panel 222a, 222b can be oriented such that the web 226b runs parallel to the seat frame side panel 122a, 122b. The legs 226a run parallel to the crossbar 230.

[0083] In the illustrated embodiment, the insert element 410 rests with its end face 412 against an inner surface of the upper frame side part 222a, 222b facing the end face 412. According to the embodiment shown Fig. 3 The insert element 410 can rest with its end face 412 against an inner surface of the seat frame side part 122a, 122b facing the end face 412.

[0084] The crossbar 230 has at least one support structure 420 on its outer circumference in the area of ​​the insert element 410 and / or the screw connection 400. This support structure 420 can radially and / or axially support the crossbar 230 in the profile of one of the upper frame side parts 222a, 222b. The support structure 420 can be designed as a sleeve half. The support structure 420 can extend axially along the crossbar 230 over an end-face section of the crossbar 230 and be connected to an outer circumference of the crossbar 230.

[0085] The support structure 420 comprises a number of radially projecting support ribs 422, which are designed to support the crossbar 230 in the profile of the upper frame side panel 222a, 222b, for example, against the legs 226a, at least radially. In the event of a crash, the support structure 420 can absorb loads.

[0086] The support structure 420 rests with a support end 424 against the end face 232 of the crossbar 230. In the illustrated embodiment, the support structure 420 encompasses the open end face 232 of the crossbar 230 at least partially in order to brace the insert element 410 against the crossbar 230 and against the profile of the upper frame side panel 222a, 222b in the event of a crash.

[0087] The support structure 420 can be formed in one piece with the crossbar 230, wherein an outer circumferential surface of the crossbar 230 is provided, for example, with grooves or slots to form support ribs 422.

[0088] The support structure 420 can engage frictionally with the inner surfaces of the profile of the upper frame side panel 222a, 222b. For example, the support structure 420 can clamp the crossbar 230 and / or the insert element 410 against slippage of the crossbar 230 in the axial direction (or in the transverse direction y) under load and / or during bolting.

[0089] Fig. Figure 5 shows a schematic sectional view of a vehicle seat 100 in the area of ​​the insert element 410 according to a further embodiment.

[0090] For example, it shows Fig. 5 a right-hand screw connection 400 on the upper frame 220, whereby it is clear that the upper frame 220 may have an identical or different connection to the crossbar 230 on the left side.

[0091] In the illustrated embodiment, the support structure 420 is designed as a support sleeve. The support structure 420 comprises a sleeve body 426. The sleeve body 426 can be provided with radially projecting support ribs 422 on its outer circumference. The support ribs 422 can extend radially around the entire sleeve body 426. The support structure 420 is mounted onto the end face of the crossbar 230. A support end 424 of the support sleeve rests against the end face 232 of the crossbar 230 to clamp the insert element 410 against the crossbar 230.

[0092] Fig. Figure 6 shows a schematic representation of a vehicle seat 100 in a state after a load has been applied.

[0093] The screw connection 400 between the insert element 410, the bolt 300, and the upper frame side panel 222a, 222b reduces deflection, displacement, and / or tearing between the individual components during loading. The insert element 410 is, in particular, a rigid component. In the event of a crash, the upper frame side panel 222a, 222b is deformed section by section, for example, due to a force being applied via the seat frame 120 connected to the upper frame 220. In this process, the insert element 410 is rotated relative to the crossbar 230 until wedging occurs, which prevents further displacement and / or tearing of the upper frame 220 or the seat frame 120 relative to the crossbar 230 and to a connection supporting the crossbar 230. 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 seat frames 122a, 122b Seat frame side panel 200 swing frame 202a, 202b Swing arm 204 Scissor axis 210 subframes 220 upper frames 222a, 222b upper frame side part 224 rear upper frame section 226a thigh 226b Bridge 228 Opening 230 crossbar 232 Front 236 cavity 240 crossbar 300 bolts 302 bolt head 304 Storage section 306 Thread section 400 screw connection 410 Insert element 412 Front surface 414 Threaded opening 416 Internal thread section 420 support structure 422 Support rib 424 supporting ends 426 shell bodies x Longitudinal direction y transverse direction z Vertical direction

Claims

[1] Vehicle seat (100), comprising at least one upper frame (220) with at least two upper frame side parts (222a, 222b) arranged spaced apart from each other in the transverse direction (y) and connected to each other via at least one crossbar (230), characterized by that at least one of the Upper frame side parts (222a, 222b) comprise a projecting insert element (410), wherein the insert element (410) is attached to the The upper frame side part (222a, 222b) is fastened via a screw connection (400) and projects at least partially into a cavity (236) of the crossbar (230), wherein in a crash the insert element (410) can be moved relative to the crossbar (230) into a securing position in which the insert element (410) engages with the crossbar (230). [2] Vehicle seat (100) according to claim 1, characterized by, that in a normal position the insert element (410) is arranged in the cavity (236) of the crossbar (230) without contact with the crossbar (230). [3] Vehicle seat (100) according to one of claims 1 or 2, characterized by , that in the event of a crash the insert element (410) is securely held in the cavity (236) of the crossbar (230) by wedging and / or static friction. [4] Vehicle seat (100) according to one of claims 1 to 3, characterized by , that the insert element (410) is designed as a locking sleeve or locking bolt. [5] Vehicle seat (100) according to one of claims 1 to 4, characterized by , that the insert element (410) is attached to the upper frame side part (222a, 222b) via a bolt (300), wherein the bolt (300) is screwed to the insert element (410) and the upper frame side part (222a, 222b). [6] Vehicle seat (100) according to any one of claims 1 to 5, characterized by, that the insert element (410) comprises a threaded opening (414) and an internal threaded section (416) and is inserted into the crossbar (230) as a threaded insert on the end face of the crossbar (230). [7] Vehicle seat (100) according to any one of claims 1 to 6, characterized by that the crossbar (230) has at least one support structure (420) on its outer circumference, by which the crossbar (230) is radially and / or axially supported in the profile of the upper frame (220). [8] Vehicle seat (100) according to claim 7, characterized by , that the support structure (420) is attached to the end face of the crossbar (230) as a support sleeve in order to brace the crossbar (230) against the profile of the upper frame (220). [9] Vehicle seat (100) according to claim 7 or 8, characterized by that the support structure (420) comprises a number of radially projecting support ribs (422) and / or a continuous wall.

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