Backrest for a vehicle seat and method of assembly

Abstract

The invention relates to a support structure (106) for a backrest (104) of a vehicle seat (100), comprising at least one carrier element (110), characterized in that on the carrier element (110) there are formed: - at least one positioning element (120), in particular a pre-positioning element (122), arranged on a carrier top side (112), which has at least one opening (124) for receiving a head support bracket (300); and - at least one locking element (140, 150, 160) arranged on at least one carrier bottom side (114) and / or a lateral carrier side (116). The invention also relates to a backrest (104) and a method for assembling a backrest (104).

Description

Technical Field

[0001] The present invention relates to a backrest for a vehicle seat and a method for assembling such a backrest for a vehicle seat. Background Technology

[0002] Support structures for backrests, such as support plates or so-called back panels, are known from the prior art. These support structures are fastened to the backrest frame, for example, by means of screw connections, riveting connections, and / or material fitting connections such as welding, bonding, or brazing.

[0003] A carrier module for a head support that can be connected to a backrest is known from DE 10 2018 208 693 A1.

[0004] A seat back assembly having an inner carrier module and a seat back frame assembly is known from US 10,081,282B2.

[0005] A method for manufacturing a vehicle seat by means of bonding the various material layers of the vehicle seat together using material bonding is known from US 5,286,325 A.

[0006] Purpose of the invention

[0007] The purpose of this invention is to improve the type of backrest described at the beginning, in particular to make it lighter, with fewer parts and easier to assemble, and to provide a simplified method for assembling the backrest. Summary of the Invention

[0008] The first objective is achieved by a backrest having the features described in claim 1. The second objective is achieved by a method having the features described in claim 14.

[0009] The support structure for the backrest of a vehicle seat includes at least one carrier element. The carrier element has formed at least one positioning element, particularly a pre-positioning element, disposed on the top side of the carrier, the at least one positioning element having at least one opening for receiving a head support bracket; and at least one locking element disposed on at least one bottom side and / or a side lateral to the carrier.

[0010] Because at least one positioning element, particularly a pre-positioning element, is formed on the carrier element and disposed on the top side of the carrier, the at least one positioning element having at least one opening for receiving a head support bracket, and at least one locking element formed on at least one bottom side of the carrier and / or the side facing the carrier, the weight of the backrest can be reduced compared to backrests known in the prior art. Since the positioning element (also referred to as the pre-positioning element) and the locking element can be designed simultaneously as fixing elements, fastening elements, or holding elements, separate connecting elements, such as screws, can be eliminated. The positioning element, particularly the pre-positioning element, simplifies the alignment of the support structure with respect to the backrest frame, and allows the support structure to be pre-positioned relative to the backrest frame and, if necessary, pre-secured.

[0011] Advantageous design options that can be used alone or in combination are the subject of the dependent claims.

[0012] For example, the support structure can be plugged into or placed on the top side of the frame in a planar manner, and can then be pivoted toward the backrest frame and can be detachably secured to the backrest frame by means of a locking element.

[0013] The positioning element can extend vertically from the plane defined by the carrier element. Since the positioning element extends vertically from the carrier element, especially from the top side of the carrier, the positioning element can be easily aligned with the top side of the backrest frame.

[0014] Since the locking element extends vertically from the carrier element, especially from the bottom and / or side of the carrier, the locking element can be easily aligned with the top side of the backrest frame and easily secured, especially by clamping or locking, to the mating locking element on the backrest frame.

[0015] Positioning elements can be designed in a disc-like and / or block-like form. A disc-like shape allows for lighter weight and / or space-saving design. A block-like shape provides additional reinforcement to the top side of the frame. Positioning elements can be designed partially disc-like and partially block-like. When assembled with the backrest frame, the positioning element can be placed in a space-saving manner on and / or at the top side of the backrest frame. When assembled with the backrest frame, the positioning element can reinforce, for example, the backrest frame to support the headrest bracket and headrest. Positioning elements, especially pre-positioning elements, can form reinforcing elements for holding and supporting the headrest bracket, such as a sliding sleeve.

[0016] The positioning element can be molded onto the carrier element. The locking element can be molded onto the carrier element. The carrier element can have at least one molded part forming the positioning element and / or locking element. The positioning element and / or locking element can be integrally formed with the carrier element. The positioning element and / or locking element can be embedded in the carrier element. Alternatively, the positioning element and / or locking element can be connected to the carrier element in a material-fitting, force-fitting, and / or form-fitting manner.

[0017] The positioning element may have an upper support surface and a lower support surface. For example, the upper support surface may be designed as a support surface for the headrest bracket and / or the headrest itself. The lower support surface allows the positioning element to be placed flat on the top side of the backrest frame.

[0018] Locking elements can be designed as hooks, locking lugs, or locking notches, such as grooves or channels. With the aid of locking elements, carrier elements can be easily and form-fittedly and / or force-fittedly connected to the backrest frame. For example, locking elements can be clamped, locked, wedged, hooked, or inserted into the backrest frame and / or the backrest frame structure and / or mating locking elements.

[0019] At least one corresponding mating locking element may be provided on the backrest frame and / or backrest frame structure. The mating locking element may also be formed by the backrest frame itself, especially by a section of the backrest frame. For example, the bottom side of the frame, or the side side of the frame, which may be profiled, tubular, or tabular, can be used as the mating locking element. Here, for example, the locking hook or locking lug of the support structure may surround or overlap the profile, tube, or tab on the bottom side or side of the frame (= mating locking element).

[0020] The mating locking element can be designed as a notch, channel, groove, lug, hook, or loop. The mating locking element can also be designed as a contour within the backrest frame. This eliminates the need for additional separate fastening elements, such as screws, rivets, brazed structures, or welded structures. This reduces costs and assembly time. Optionally, additional fastening elements can be used to connect the support structure to the backrest frame.

[0021] The support structure, particularly the carrier element, can be made of plastic. The carrier element can be made of, for example, expanded polypropylene (EPP). The carrier element can also be made of, for example, sustainable plastics. The carrier element can be injection molded. The carrier element can be designed to be locally reinforced with a metal layer. The carrier element can have a substrate made of, for example, metal. For example, the carrier element can be made of plastic on the edge sides or circumferential sides.

[0022] The positioning element can be formed in one piece with the carrier element. The carrier element and the positioning element can be manufactured in the same process step. For example, the carrier element and the positioning element can exist as an injection molded part. For example, the positioning element can be formed in one piece at least with the top side of the carrier. Optionally, the positioning element can be material-fitted, force-fitted, and / or form-fittedly fastened to the carrier element, especially the top side of the carrier. The positioning element can be made of plastic, such as so-called EPP material. The positioning element can have damping characteristics. The positioning element can be designed to be generally rigid and have reinforcing characteristics.

[0023] The locking element can be formed in one piece with the carrier element. The carrier element and the locking element can be manufactured in the same process step. For example, the carrier element and the locking element can exist as injection molded parts. For example, the locking element can be formed in one piece with at least one of the carrier bottom side and / or the carrier side. Optionally, the locking element can be material-fitted, force-fitted, and / or form-fitted fastened to the carrier element, especially the carrier top side. The locking element can be made of plastic, such as so-called EPP material. The locking element can have damping characteristics. For example, the locking element can be designed to have reversible flexibility.

[0024] In all described embodiments, the carrier element can be designed as a multi-piece or a single piece. For example, the carrier element, along with positioning and locking elements, can be configured as an injection-molded part and / or made of plastic. The carrier element can, for example, have a substrate on which a top carrier side, a bottom carrier side, and two lateral carrier sides connecting the top and bottom carrier sides are tightly fitted along the edge or circumferential side, these lateral carrier sides having pre-assembled positioning and locking elements. For example, the top, bottom, and sides of the carrier can form a single-piece or multi-piece combined carrier frame.

[0025] The positioning element can extend along, for example, the direction of the backrest frame located on the front side. That is, the positioning element can extend perpendicularly to the carrier element along the direction of the backrest frame located on the front side. The positioning element can be designed as a positioning arm or a positioning leg.

[0026] The positioning element can be designed as a pre-positioning element, which is pre-positioned for assembly on the backrest frame, thereby simplifying the subsequent final assembly of the carrier element on the backrest frame.

[0027] The positioning element can be designed in the form of a pouch, loop, and / or shell, and can partially or completely receive the head support structure. The positioning element may have at least one receiving structure in which the head support structure can be received in a form-fitting and / or force-fitting manner. For example, the receiving structure may be formed in the at least one opening of the positioning element. The receiving structure may be, for example, a clamping structure, a locking structure, and / or a wedge-shaped structure. The receiving structure may, for example, have multiple protrusions, bumps, lugs, and / or ribs extending into the opening.

[0028] The positioning element can be arranged in the central region of the top side of the carrier. The positioning element can have two openings for correspondingly receiving a sliding sleeve (also referred to as a plug sleeve) of the head support bracket. The positioning element can extend across the entire width of the top side of the carrier. The positioning element can be designed for the top side of the carrier.

[0029] The carrier element can form the back side of the backrest frame. The carrier element can have two positioning elements. The support structure can be designed as a flat or bowl-shaped carrier element with vertically extending positioning and locking elements. Each positioning element can have an opening.

[0030] The carrier element may have multiple locking elements. These locking elements may be distributed, for example, along the edge or circumferential sides of the carrier element. The carrier element may have at least one locking element on a corner side. The corner-side locking element may form a corner reinforcement or corner cover of the backrest frame. At least one locking element may form a locking groove or locking channel into which the edge and / or frame portion of the backrest frame may be inserted, for example, clamped, and / or held.

[0031] According to the invention, this objective is also achieved by a backrest for a vehicle seat, the backrest comprising at least a backrest frame and a support structure, wherein the support structure includes at least one carrier element, wherein the carrier element is formed with: at least one positioning element, particularly a prepositioning element, disposed on the top side of the carrier, the at least one positioning element having at least one opening for receiving a head support bracket; and at least one locking element disposed on at least one bottom side and / or a side lateral to the carrier, wherein, in the assembled state of the backrest frame and the support structure, the positioning element is placed on the top side of the frame, and the locking element is locked into engagement with at least one bottom side and / or a side lateral to the frame.

[0032] The top side of the frame may include at least one sliding sleeve for receiving the end of the upright of the head support bracket, wherein a positioning element is inserted into the sliding sleeve and can be axially positioned, in particular pre-positioned, relative to the backrest frame on the sliding sleeve (also referred to as the insertion sleeve).

[0033] The positioning element can extend vertically from the plane defined by the carrier element. Since the positioning element extends vertically from the carrier element, especially from the top side of the carrier, the positioning element can be easily aligned with the top side of the backrest frame.

[0034] Since the locking element extends vertically from the carrier element, especially from the bottom and / or side of the carrier, the locking element can be easily aligned with the top side of the backrest frame.

[0035] Positioning elements can be placed and / or inserted into the top side of the frame for pre-positioning and / or pre-fixation. Subsequently, the carrier element can be easily attached to the bottom side and / or lateral side of the frame in a releasable or non-releasable manner. For example, blind assembly can be performed after the positioning elements have been pre-positioned and / or pre-fixed to the backrest frame.

[0036] Positioning elements can be designed in a disc-like and / or block-like form. A disc-like shape allows for lighter weight and / or space-saving design. A block-like shape provides additional reinforcement to the top side of the frame. Positioning elements can be designed partially disc-like and partially block-like. When assembled with the backrest frame, the positioning element can be placed in a space-saving manner on and / or at the top side of the backrest frame. When assembled with the backrest frame, the positioning element can reinforce, for example, the backrest frame to support the headrest bracket and headrest. Positioning elements, especially pre-positioning elements, can form reinforcing elements for holding and supporting the headrest bracket, such as a sliding sleeve.

[0037] The positioning element may have an upper support surface and a lower support surface. The upper support surface may be designed, for example, as a support surface for a headrest bracket and / or a headrest. The lower support surface allows the positioning element to be placed flat on the top side of the backrest frame.

[0038] Locking elements can be designed as hooks, locking lugs, or locking notches, such as grooves or channels. With the aid of locking elements, carrier elements can be easily and form-fittedly and / or force-fittedly connected to the backrest frame. For example, locking elements can be clamped, locked, wedged, hooked, or inserted into the backrest frame and / or the backrest frame structure and / or mating locking elements.

[0039] The top side of the frame may have at least one mating locking element. The bottom side of the frame may have at least one mating locking element. The locking elements of the carrier element can be easily inserted, clamped, or held into the mating locking elements, or vice versa. These mating locking elements can be designed as notches, channels, grooves, lugs, hooks, or loops. The mating locking elements can also be designed as contours within the backrest frame. Additional separate fastening elements, such as screws, rivets, brazing structures, or welded structures, can be eliminated. This reduces cost and assembly time. Optionally, additional fastening elements can be used to connect the support structure to the backrest frame.

[0040] The number of locking elements can be varied according to customer requirements or the structural design of the backrest and / or backrest frame. The number of mating locking elements can also be varied according to customer requirements or the structural design of the backrest and / or backrest frame.

[0041] The backrest frame and the support structure can be detachably connected to each other by means of form-fitting and force-fitting connections, especially interlocking locking connections. For example, the backrest frame and the support structure can be detachably connected by snap-fitting, especially interlocking snap-fitting or interlocking locking connections.

[0042] According to the invention, this objective is also achieved by a method for assembling the backrest described above, wherein in a first step, a positioning element of the carrier element is aligned on the top side of the backrest frame and / or on it until the opening of the positioning element is arranged opposite to the through opening and / or sliding sleeve provided in the top side of the frame for the head support bracket; in a second step, the positioning element is placed on the top side of the backrest frame and / or inserted into the sliding sleeve; and in a third step, the carrier element is pivoted relative to the backrest frame until the locking element engages with the backrest frame.

[0043] After the positioning element is pre-positioned and / or pre-fixed to the top side of the frame, the carrier element can be pivoted and / or pressed relative to the backrest frame until the locking element is fully locked onto the mating locking structure, especially the mating locking element. In other words, after the positioning element is pre-positioned on the backrest frame, the carrier element can be flipped downward toward the backrest frame until the locking element engages with at least the bottom side of the frame and / or one or two lateral sides of the frame.

[0044] In summary, and in other words, the present invention provides a backrest that can be easily and quickly assembled, wherein a carrier element (e.g., the rear wall of an EPP) is hooked onto and clamped to the backrest frame. One or more openings of the carrier element, particularly a positioning element, are positioned on a sliding sleeve of a head support bracket, wherein at least one locking element of the carrier element is clamped to the backrest frame from the rear. Attached Figure Description

[0045] The invention will now be described in detail with the aid of advantageous embodiments shown in the accompanying drawings. However, the invention is not limited to these embodiments. In the drawings:

[0046] Figure 1 : Shows a side view of the vehicle seats,

[0047] Figure 2 : An exploded view of the backrest of the present invention according to an embodiment is shown.

[0048] Figure 3 : A perspective view of the backrest of the present invention in an assembled state according to an embodiment is shown.

[0049] Figure 4 : A block diagram showing a method for assembling the backrest of the present invention according to an embodiment. Detailed Implementation

[0050] In the following text, three spatial directions extending perpendicularly to each other will be used to describe the space. Figure 1 The vehicle seat 100 is schematically shown in the diagram. In the vehicle seat 100 installed in a vehicle, the longitudinal direction x extends horizontally in most cases and preferably parallel to the longitudinal direction of the vehicle, which corresponds to the vehicle's usual direction of travel. The lateral direction y, extending perpendicularly to the longitudinal direction x, is also horizontally oriented in the vehicle and extends parallel to the lateral direction of the vehicle. The vertical direction z extends perpendicular to the longitudinal direction x and perpendicular to the lateral direction y. In the vehicle seat 100 installed in a vehicle, the vertical direction z extends parallel to the vehicle's vertical axis.

[0051] The position and direction indicators used, such as “forward,” “rear,” “up,” “down,” and “lateral,” refer to the line of sight of a passenger seated in a common sitting posture on the seat portion 102 of vehicle seat 100, wherein vehicle seat 100 is installed in a position suitable for passenger transport and has an upright backrest 104, and generally faces the direction of travel. However, vehicle seat 100 may also be installed in a different orientation, such as laterally to the direction of travel. Unless otherwise stated, vehicle seat 100 is constructed in a mirror-symmetric manner with respect to a plane extending perpendicularly to the lateral direction y.

[0052] The vehicle seat 100 can be a rear seat and / or a rear bench. A head support bracket 300, particularly a head support upright or a U-shaped clamp, for the head support 105 can be fastened to the backrest 104.

[0053] Figure 2 and Figure 3 The present invention backrest 104 according to an embodiment is shown, wherein the backrest 104 is shown without cushioning elements and / or cover elements.

[0054] The backrest 104 includes a support structure 106 and a backrest frame 200. The support structure 106 forms the rear wall of the backrest 104. The support structure 106 is connected to the backrest frame 200 to form the backrest structure. After the backrest structure is assembled, a cushion and an outer cover can be installed on the backrest structure.

[0055] Figure 2 An exploded view of the backrest 104 of the present invention in an unassembled state is shown.

[0056] The support structure 106 includes a carrier element 110 on which positioning elements 120, particularly prepositioning elements 122, are formed and arranged on the top side 112 of the carrier. The positioning elements have two openings 124 for receiving the head support bracket 300. The positioning elements 120 extend vertically from the plane defined by the carrier element 110.

[0057] The positioning element 120 is designed to be block-shaped. Alternatively, the positioning element 120 can be designed to be disc-shaped. The positioning element 120 has an upper support surface 126. The upper support surface 126 can be used (e.g., in the lowered position) to support the head support body. Furthermore, the positioning element 120 has a lower support surface 128. Figure 3 In the assembled state shown, the lower support surface 128 is supported on the top side 202 of the backrest frame 200.

[0058] Figure 3 A perspective view of the backrest 104 of the present invention in its assembled state is shown.

[0059] The top side 202 of the frame includes two sliding sleeves 204, particularly upright sleeves, for receiving the upright ends of the head support bracket 300. The sliding sleeves 204 can be designed as insert sleeves for the head support bracket 300. The sliding sleeves 204 are guided through the top side 202 of the frame and can extend from either side or one side of the backrest frame 200. Alternatively, the sliding sleeves 204 can terminate flush with the upper and / or lower sides of the top side 202 of the frame. For example, the sliding sleeves 204 can extend only upwards or downwards from the top side 202 of the frame.

[0060] In order to preposition the carrier element 110 on the backrest frame 200, aligning the positioning element 120 and therefore the carrier element 110 relative to the top side 202 of the frame and therefore relative to the backrest frame 200, a sliding sleeve 204 can be introduced into the opening 124 of the positioning element 120, and in particular the prepositioning element 122. When the sliding sleeve 204 is introduced into the opening 124, the lower support surface 128 of the positioning element 120 can be placed flatly on the top side 202 of the frame.

[0061] Alternatively, for example, if the sliding sleeve 204 extends downward, the positioning element 120 can approach and align from below the top side 202 of the frame, allowing the sliding sleeve 204 to be introduced into the opening 124. When the sliding sleeve 204 is introduced into the opening 124, the upper support surface 126 of the positioning element 120 can abut against the lower side of the top side 202 of the frame in a planar manner.

[0062] Positioning element 120 is pre-positioned for assembly due to the abutment of support surface 128 at and / or on the top side 202 of the frame.

[0063] In the illustrated embodiment, for pre-positioning and pre-fixing of the carrier element 110, the positioning element 120 may be inserted or placed forward and / or from above along the insertion direction R1 (also referred to as the positioning direction) onto the sliding sleeve 204. The sleeve section of the sliding sleeve 204 protruding from the backrest frame 200 may be inserted into the opening 124 or guided completely through the opening 124.

[0064] To form-fit and / or force-fit and to detachably connect the backrest frame 200 to the support structure 106, the support structure 106 can then be moved, for example, flipped or pivoted relative to the backrest frame 200 along the pressing direction R2 (also referred to as the fixing direction). Specifically, the support structure 106 is moved until the backrest frame 200 and the support structure 106 achieve a form-fit and / or force-fit engagement, particularly a detachable locking engagement or clamping engagement. This allows the backrest frame 200 and the support structure 106 to be detachably engaged in a plug-in locking connection or a plug-in clamping connection, and to be secured together without tools.

[0065] The carrier element 110 includes a carrier bottom side 114 and two lateral carrier sides 116. The carrier sides 116 connect the carrier bottom side 114 to the carrier top side 112.

[0066] The carrier element 110 may be made of, for example, so-called EPP material. The carrier element 110 includes a carrier body 130. The carrier body 130 is a planar carrier plate. The carrier body 130 includes, for example, a support structure 132 in the form of support ribs. Alternatively, the carrier element 110 may be designed as a frame, and the carrier element may consist of a top carrier side 112, a bottom carrier side 114, and two lateral carrier sides 116 connecting the top carrier side 112 and the bottom carrier side 114.

[0067] Furthermore, a plurality of locking elements 140 are formed on the carrier element 110, particularly on its carrier body 130. The number of locking elements 140 can be varied. In the illustrated embodiment, two locking elements 140 are shown. Alternatively, fewer or more locking elements 140 may be provided and / or provided at other locations on the carrier element 110.

[0068] The carrier bottom side 114 includes a first locking element 140. The first locking element 140 is designed as or has a locking hook 142. The first locking element 140 extends vertically from the plane defined by the carrier element 110. The first locking element 140 is designed to be generally L-shaped or J-shaped. The locking hook 142 faces upward and has a locking notch 144 into which the frame bottom side 206 can be inserted, such as... Figure 3 As shown. A locking notch 144 is formed between the locking hook 142 and the carrier body 130. The locking elements 140 are arranged spaced apart from each other in the lateral direction. Alternatively or optionally additionally, the bottom side 114 of the carrier and / or the side 116 of the carrier may have a plurality of locking elements 140 designed as locking hooks 142.

[0069] In a variation of the first embodiment, the locking element 140 may be designed as a single piece and form a continuous locking recess 144 in the form of a channel or groove extending laterally along the bottom side 114 of the carrier. Alternatively, the first locking element 140 may be designed as a U-shape, wherein one leg is fastened to the carrier element 110, particularly to the carrier body 130, wherein another leg, serving as a hook for holding the backrest frame 200, and a tab connecting the legs form a locking recess 144 for form-fitting reception of the backrest frame 200.

[0070] The backrest frame 200 may, for example, have a mating locking element. Preferably, the backrest frame 200 itself may be designed as a mating locking element. For example, a section of the backrest frame 200 may constitute a mating locking element. In particular, a section of the bottom side 206 of the frame or a corresponding section of one frame side 208 that is designed as a profile, tube, or tab may constitute a mating locking element. Here, the locking element 140 may, for example, surround or overlap the profile, tube, or tab of the bottom side 206 or frame side 208 (= mating locking element).

[0071] The first locking element 140 is designed to be flexible. The locking element 140 may be made of plastic. The locking element 140 may be spring-preloaded.

[0072] To simplify the introduction and locking of the frame bottom 206 into the locking recess 144, the first locking element 140, particularly the locking hook 142, has an inclined, for example, ramp-shaped edge 146. When the carrier element 110 is pre-positioned and pre-fixed to the backrest frame 200 by means of the positioning element 120, the carrier element 110 can move, for example, flip and pivot in the pushing direction R2, so that the frame bottom 206 advances on the inclined edge 146 and pushes the corresponding locking element 140, particularly the locking hook 142, against its spring force F1 and / or clamping force until the frame bottom 206 is positioned, particularly clamped, into the locking recess 144. The first locking element 140 is locked into the backrest frame 200 in the assembled, i.e., assembled state. The frame bottom 206 is clamped or locked between the locking element 140 and the carrier body 130.

[0073] Alternatively, additionally, or optionally, the carrier element 110 has a lateral second locking element 150. For example, the second locking element 150 may be designed as a lateral locking wing 152 and / or locking leg and / or locking arm. The second locking element 150 may be arranged on the outer periphery of the carrier body 130 and may form a support wing or support leg, reinforcing wing or reinforcing leg for the backrest frame 200. For example, the second locking element 150 may have a spring force F2 and / or clamping force acting inward toward the center of the carrier body, which acts on the lateral frame side 208 of the backrest frame 200 in the assembled state of the carrier element 110 and the backrest frame 200. In the assembled state, the second locking element 150 is placed planarly on the lateral frame side 208. The second locking element 150 may be designed to be flexible. The second locking element 150 may have an inclined edge, for example, in the form of a ramp.

[0074] Alternatively, additionally, or optionally, the carrier element 110 may have at least one third locking element 160 in the transition region, particularly in the corner region between the carrier side 116 and the carrier top side 112 and / or the carrier bottom side 114, which, in the assembled state, acts with its spring force F3 on the transition region or corner region of the backrest frame 200.

[0075] In a variation of the first embodiment, a plurality of locking elements 140, 150, and 160 may be formed on the carrier element 110, particularly on its carrier body 130. The number and / or position of the locking elements 140, 150, and 160 may be varied. For example, the top side 112 of the carrier may have a fourth locking element (not shown in detail) spaced apart from the positioning element 120. The fourth locking element may form a locking notch into which one of the sliding sleeves 204 may be inserted or introduced, for example, to achieve a locking engagement.

[0076] In a variation of the first embodiment, the backrest frame 200 may have mating locking elements (not shown in detail). These mating locking elements may be designed as notches, hooks, channels, grooves, lugs, or loops. The mating locking elements may be distributed on the backrest frame 200 such that the positions of the mating locking elements correspond to the positions of the locking elements 140, 150, and 160. For example, the mating locking elements may be arranged as protrusions and / or molded parts and / or channels on the frame portions (frame top side 202, frame bottom side 206, and side frame side 208).

[0077] In another variation of the illustrated embodiment, the carrier element 110 may have internal locking elements 140, 150, 160 that engage with the inner circumferential surface of the backrest frame 200.

[0078] Figure 4 A block diagram is shown of a method for assembling the backrest 104 of the present invention according to one embodiment.

[0079] In the first step V1, the positioning element 120 of the carrier element 110 is aligned with the top side 202 of the backrest frame 200 and / or thereon until the opening 124 of the positioning element 120 is opposite to the through opening and / or the sliding sleeve 204 provided in the top side 202 of the frame. In the second step V2, the positioning element 120 is placed on the top side 202 of the backrest frame 200 and / or inserted into the sliding sleeve 204. After the second step V2, the carrier element 110 is pre-positioned and / or pre-fixed to the backrest frame 200 by means of the positioning element 120. In the third step V3, the carrier element 110 is pivoted relative to the backrest frame 200 until the locking elements 140, 150, 160 are locked into the backrest frame 200.

[0080] In particular, the carrier element 110 can be fastened to the backrest frame 200 without the need for tools.

[0081] List of reference numerals

[0082] 100 vehicle seats

[0083] 102 Seating Section

[0084] 104 Backrest

[0085] 105 Head support component

[0086] 106 Support Structure

[0087] 110 Carrier Components

[0088] 112 Top side of the carrier

[0089] 114 Carrier bottom side

[0090] 116 Carrier side

[0091] 120 Positioning Element

[0092] 122 Pre-positioning element

[0093] 124 Opening

[0094] 126 Support surface

[0095] 128 Support surface

[0096] 130 Main body of the carrier

[0097] 132 Supporting Structure

[0098] 140, 150, 160 locking elements

[0099] 142 Carabiner

[0100] 144 Locking notch

[0101] 146 Edge

[0102] 152 Locking the flank

[0103] 200 Backrest Frame

[0104] 202 Top side of frame

[0105] 204 Sliding Sleeve

[0106] 206 Frame bottom side

[0107] 208 Frame Side

[0108] 300 Head Support Bracket

[0109] Spring forces F1 to F3

[0110] R1 Plug-in direction

[0111] R2 Push direction

[0112] Steps from V1 to V3

[0113] x Vertical direction

[0114] y (horizontal direction)

[0115] z Vertical direction

Claims

1. A backrest (104) of a vehicle seat (100), said backrest comprising at least: - A backrest frame (200) having a top frame side (202) and a bottom frame side (206) and two lateral frame sides (208) correspondingly connecting the top frame side (202) and the bottom frame side (206); and - A support structure (106) that forms the rear wall of the backrest (104) and is detachably connected to the backrest frame (200). The support structure (106) includes at least one carrier element (110). Its features are, The carrier element (110) includes at least a carrier bottom side (114), a carrier top side (112), and two lateral carrier sides (116), wherein the carrier element (110) has the following: - At least one positioning element (120) disposed on the top side (112) of the carrier, the at least one positioning element having at least one opening (124) for receiving a head support bracket (300); and - At least one locking element (140, 150, 160), said at least one locking element being arranged at at least one of the following carrier sides, namely the carrier bottom side (114) and the lateral carrier side (116), The support structure (106) is alignable on the top side (202) of the frame by means of the positioning element (120) and is positioned relative to the backrest frame (200), and the support structure is subsequently detachably connected to the backrest frame (200) by means of the locking elements (140, 150, 160) on one of the carrier sides, namely the bottom side (206) of the frame and the side frame side (208).

2. The backrest (104) according to claim 1, characterized in that, The support structure (106) can be inserted into or placed in a planar manner on the top side (202) of the frame, and can then pivot toward the backrest frame (200) and can be detachably secured to the backrest frame (200) by means of the locking elements (140, 150, 160).

3. The backrest (104) according to claim 1, characterized in that, The positioning element (120) and the locking elements (140, 150, 160) extend vertically from the plane defined by the carrier element (110).

4. The backrest (104) according to claim 1 or 2, characterized in that, The positioning element (120) is designed to be disc-shaped and / or block-shaped.

5. The backrest (104) according to claim 1, characterized in that, The positioning element (120) has an upper support surface (126) and a lower support surface (128).

6. The backrest (104) according to claim 1, characterized in that, The locking elements (140, 150, 160) have a locking hook (142), a locking lug, and / or a locking notch (144).

7. The backrest (104) according to claim 1, characterized in that, At least the carrier element (110) is made of plastic.

8. The backrest (104) according to claim 1, characterized in that, The positioning element (120) and / or the locking element (140, 150, 160) are formed in one piece with the carrier element (110).

9. The backrest (104) according to claim 1, wherein, with the backrest frame (200) and the support structure (106) assembled, the positioning element (120) is placed on or abuts the top side (202) of the frame, and the locking element (140, 150, 160) is in a locking engagement with at least one of the following frame sides, namely the bottom side (206) of the frame and the lateral frame side (208).

10. The backrest (104) according to claim 1, characterized in that, The top side (202) of the frame includes at least one sliding sleeve (204) for receiving the end of the upright of the head support bracket (300).

11. The backrest (104) according to claim 10, characterized in that, The positioning element (120) can be aligned relative to the backrest frame (200) by means of its opening (124), and can then be inserted into or inserted into the sliding sleeve (204) and positioned or located on the sliding sleeve (204) axially relative to the backrest frame (200).

12. The backrest (104) according to claim 1, characterized in that, The backrest frame (200) and the support structure (106) are connected to each other in a detachable manner by means of a plug-in locking connection.

13. The backrest (104) according to claim 1, characterized in that, The locking lugs or hooks of the support structure (106) are engaged in a locking manner with the mating receivers or mating tabs of the backrest frame (200).

14. A method for assembling a backrest (104) according to any one of claims 1 to 13, characterized in that, - In the first step (V1), the positioning element (120) of the carrier element (110) is aligned with the top side (202) of the backrest frame (200) and / or on it until the opening (124) of the positioning element (120) is opposite to the through opening and / or sliding sleeve (204) of the head support bracket (300) provided in the top side (202) of the frame. - In the second step (V2), the positioning element (120) is placed on the top side (202) of the backrest frame (200) and / or inserted into the sliding sleeve (204), and - In the third step (V3), the carrier element (110) is pivoted relative to the backrest frame (200) until the locking element (140, 150, 160) engages with one of the frame bottom side (206) and / or the lateral frame side (208) of the backrest frame (200).

Images