DE102010035416A1 - Headrest for seat of automobile, has receiving device for receiving web of clamp-backrest, and moving device comprising locking unit and folding joint formed at opposite ends of supporting element of headrest - Google Patents

Abstract

The headrest (1) has a receiving device (2) for receiving a material web of a clamp-backrest. The receiving device is designed as a storage space for receiving the material web in the headrest or for mounting the material web to the headrest. A moving device moves the headrest between a use position and an assembly and/or a bearing position. The moving device comprises a locking unit (17) and a folding joint (18) e.g. hinge or film hinge, where the locking unit and the folding joint are formed at opposite ends of a supporting element (15) of the headrest. An independent claim is also included for a seat for a vehicle.

Description

The invention relates to a seat, in particular a vehicle seat, and a headrest and a seat as components of this seat.

Generic headrests, in particular for a vehicle seat, usually include a movement device for adjusting the height and the inclination. Thus, an adaptation to the individual needs of a user is given. The purpose of a headrest is to support it in the event of a head-acting acceleration and to prevent overstretching of the cervical spine. Thus, whiplash or the like can be avoided.

A headrest of the type mentioned is usually part of a seat with a seat and a backrest arranged thereon. Due to the rising energy costs, for example, all components of a vehicle are weight optimized. This leads to the reduction in simultaneous lightweight construction. Accompanied by this, storage space inside the vehicle is lost, which is needed for transport tasks. Furthermore, vehicles are usually designed for four or more people, whereby a compromise between storage space or trunk and the space for a seat occupant is necessary. Usually trunk is lost in favor of the seat. It is known that unused rear seats can be folded forward to increase the trunk. Often the headrests have to be removed. Nevertheless, the now resulting increased storage space is usually not just the trunk, so there is a step between Kofferraumebene and folded rear seats. Furthermore, there are also seat designs that require an expansion of the seat in order to increase the space available for transport. The disadvantage is that in addition to the increased workload for the seat a repository is needed and this is available only after return and installation again.

There was therefore a need for a seat that is quick and easy to assemble and disassemble without having to be completely removed from the installation site, where it takes up as little space in the degraded state. The object of the invention is to provide such a seat and suitable components thereof.

The object is achieved with a headrest, a seat and a seat according to the independent claims. Preferred developments are specified in the dependent claims.

To achieve the object, it is provided according to the invention that the headrest and the seat, which are components of the seat according to the invention, have a receiving device for a material web of a tensionable backrest. An essential aspect of the invention is therefore initially to form the backrest of a light, easy and space-saving, aufspannewbaren material. For storage of the material web, if it is not needed as a backrest of the seat, it is expedient in headrest or seat storage space available in which the material web rolled up, folded or otherwise stored in any space to save space.

If an additional seat is required, the material web is removed from the storage space and attached to a suitable holding device, which is preferably present on the respective other component of the seat, and thus mounted as a backrest. Thus, if the material web is stowed, for example, in the headrest and fastened with one end there, the holding device for fastening the other end of the material web is expediently located on the seat surface. Accordingly, the mounting device is preferably located on the headrest when the storage space for the material web lies in the seat. As far as an arrangement in the headrest or seat is mentioned, this not only includes an integral arrangement of the storage space in the respective component, but also a separate embodiment of the storage space on the headrest or seat. However, for visual and safety reasons, preference is given to an integrated and self-contained design of the headrest and the seat surface.

Due to the ease of storage and the small footprint of the backrest and their compared to conventional seat backrests significantly reduced weight assembly and disassembly of the additional seat are very easy and without much effort possible. A removal during disassembly is eliminated. In order to create as much space as possible by dismantling the temporary seat, preferably headrest and seat are movably mounted, so that they can be moved from a use position (sitting position) into a storage position in which they disturb as little as possible and release as much storage space as possible. For example, may be provided in the front lower portion of the seat, a pivoting mechanism such as a hinge or the like, through which the seat can be pivoted forward. In this way, it is possible, for example, in the case of a temporary automobile seat, to tilt the seat forward and set up parallel to the back of a seat of a row of seats arranged further forward. This reduces the space requirement essentially to the Height of the seat cushion of the seat. At the same time it is possible by folding away the seat, to create a flat shelf for the storage space. The raised seat also forms a barrier between storage space and the rearmost row of seats.

The headrest is preferably movably mounted. Since it - unlike most conventional headrests - can not be attached to the backrest, it is mounted in a suitable location in their environment - in the case of an automobile, for example, on the roof structure or a side rail. Again, the storage position is suitably chosen so that the most space-favorable or a prescribed position is achieved and / or the least possible impairment of the view is given to the rear.

Alternatively or in addition to storage and use position, a mounting position can also be provided for headrest and / or seat. In this mounting position, the headrest and seat are more approximate to each other than in the use position to facilitate securing the web between the two components. By moving into the use position, the material web can then be tensioned, so that the material web is fastened with sufficient tension between the headrest and the seat surface and offers sufficient support to the seated person in the area of the back. Specifically, for example, the receiving device of the headrest be designed so that they can in the mounting position an end portion of the material web or attached to the end portion of the material web extract element - for example in the form of a handle bar - record. By moving the headrest into the use position and at the same time moving away the mounting location of the attachment point of the opposite second end portion of the web to the seat then the web is stretched. Advantageously, in the position of use also the end portion or the extension element is secured to the headrest, so that in the use position, a slipping of the material web of the headrest is not possible.

Incidentally, the arrangement of the backrest is not restricted to specific orientations. In addition to a substantially vertical or slightly reclined arrangement of the backrest and stronger inclinations are up to a horizontal orientation for a temporary couch conceivable. In the case of couches and the two-sided attachment of stowable backrests / lying surfaces on a central support surface is possible. Applications can be found for example in various means of transport such as bus, truck, automobile, aircraft, ambulances, rail vehicles or ships. But applications outside of vehicles, for example, for temporary furniture such as emergency seats, emergency beds, etc., are conceivable. It is also possible to influence by variably adjustable inclination of the seat and / or headrest, the inclination of the backrest.

The movement device, with which the headrest can be brought into their different positions, is preferably a folding device. This preferably comprises a locking unit and a hinged joint. Specifically, such a folding element is designed for example as a hinge or film hinge. The folding element makes it possible to move the headrest by means of a rotary movement in the various positions (use position, mounting position and / or storage position). The locking unit serves to define the headrest in the use position and possibly the storage position in which an undesirable adjustment should be avoided. In the unlocked position, however, the headrest is freely rotatable about the folding joint. It is preferred to form the locking unit and the hinged joint at opposite ends of the headrest, since in this case the leverage forces are the cheapest and the headrest is best secured in the locked position against unwanted displacement.

Locking unit and folding joint are preferably mounted on a support member of the headrest, which may be padded in a conventional manner for the sake of comfort and safety.

To attach the headrest or the support element, for example, to the roof structure of an automobile, is preferably a pivotable hook, which engages behind a suitable, attached to the roof construction counterpart such as a spar. The counterpart is suitably connected to a matched to the shape of the headrest stationary fastener such as a support plate on the meaningful way also attacks the folding joint. To operate the pivoting hook, a lever is ideally attached to this. This serves as an extended arm or as a trigger that allows a comfortable release of the headrest. The hook is expedient structurally designed so that it basically moves between two extreme positions of the lever, namely between a closed and an open position. In the closed position, the hook engages behind the counterpart and fixes the headrest, preferably at the same time prevents the release of the backrest from the receiving device and this is tensioned. However, by pivoting the hook in the open position, the headrest pivoted from the use or storage position and the backrest are released from the receiving device.

The seat according to the invention, which is preferably used as a vehicle seat, is - as mentioned - composed of seat, headrest and between these braced backrest. The web that forms the backrest can be stowed for storage either in the seat or in the headrest. For space and handling reasons, it is preferred in both variants when the material web is rolled up and down. This can be easily realized by means of a roller blind mechanism. In a specific embodiment, this preferably has a shaft for rolling up the material web and an extension element, wherein the material web is fastened with a first end region on the shaft and a second, opposite end region on the extension element. Thus, in the case of use, the material web can be quickly unrolled by pulling on the extension element of the shaft and rolled up again just as quickly.

So that both processes, the winding and unrolling, take place more conveniently, it is expedient if the roller-blind mechanism has at least one tensioning device, in particular a spring, for tensioning the material web. Such a device can serve in addition to the unwinding and Aufrollvorgängen also the tightening of the backrest, so that it always has an adapted to the user's clamping force. Alternatively or additionally, the tensioning of the web can also - as mentioned - done by folding the headrest in the use position.

As a material for the material web are basically all zusammenroll- or foldable sheet conceivable. For example, films or fabric webs, in particular of woven fabric, net, knitted fabric, knitted fabric or combinations thereof, are suitable. Preferred are air- and moisture-permeable, skin-friendly, tear-resistant materials.

The invention will be explained in more detail with reference to the embodiments given in the figures. They show schematically:

1 a sectional view on a headrest;

2 a sectional view of a headrest in two positions;

2a an enlarged sectional view of the locking unit of 2 ;

2 B : a further enlarged sectional view of the locking unit of 2 ;

3 an alternative embodiment of a headrest;

4 a further alternative embodiment of a headrest;

5 a seat having a headrest, a backrest and a seat; and

6 a seat.

Identical components are designated in the figures with the same reference numerals. For the sake of clarity, not every repeating component is marked separately in each of the figures.

The sectional view 1 shows a headrest 1 with a support element 15 in the form of a three-dimensionally deformed plate, for example made of plastic or metal, and a movement device for folding the headrest. The support element 15 is partly from a cushion 14 spans. The movement device consists of a locking unit 17 and a folding joint 18 , which as a hinge to a, in the mounted state of the headrest lower, end of the support element 15 trained and around which rotates the support element. The locking unit 17 is at the opposite, upper end of the support element 15 arranged and has a pivoting hook 9 up, a spar 10 to prevent unintentional pivoting around the hinge 18 embraces. The hook 9 is rotatable with a shaped sheet 12 on the support element 15 attached and can with a lever 13 to which he is connected. The hook 9 Thus, between an open position (indicated by the dashed lever, see for the hook 2 ) and a closed position (black). The hook 9 is shaped so that it engages around the spar 10 with an L-shaped retaining plate 21 and the molded sheet 12 a recording device 2 for a material web 4 in the form of a fabric or foil forms, with which a backrest 3 can be clamped (cf. 2 ). To protect the material web 4 against unnecessary friction on the support element 15 is the holding plate 12 in an outwardly convex curvature around the support element 15 and the upholstery 14 bent around.

The support element 15 is about the folding joint 18 with a fastener 16 connected. Both elements are adapted in shape to each other, on the one hand, the locking unit 17 mostly to enclose and on the other to the headrest over the fastener 16 for example, to attach to the body of a vehicle and acting forces of the support element 15 on the fastener 16 forward. Usefully, the fastener 16 accordingly matched in its shape to the mounting location.

2 puts the headrest 1 in two positions, one locked and one unlocked. In the unlocked position, the headrest is in the Y direction around the hinged joint 18 folded down and provides good access to the holding plate 12 , Molded sheet 21 and hooks 9 formed recording device 2 , In this state, the introduction of an extract element 7 with the material web attached thereto 4 for the backrest 3 in the cradle 2 facilitated. Specifically, the extract element is an oval-shaped rod, at the one longitudinal end 4a the material web 4 attached and so in the cradle 2 is mounted. In the locked position the hook engages 9 around the spar 10 and holds the support element 15 or the headrest 1 positively on the fastener 16 , In each of the two positions is the lever 13 shown in a closed position and an open position. The closed position prevented by the interaction of holding plate 12 , Molded sheet 21 and hooks 9 the release of the extract element 7 from the recording device 2 , By contrast, the hook is pivoted in the open position such that the extract element 7 slightly out of the cradle 2 is solvable.

The unlocked position thus serves to easily fasten the material web 4 on the headrest, with the swiveling of the headrest 1 around the folding joint 18 in the locked position, the material web tensioned. This gives the backrest 3 sufficient tension to adequately support the back of a seat occupant.

In 2a is the locking unit 17 enlarged and without lever 13 shown. It is easy to see how the retaining plate 12 in the closed position and in the locked position by means of its shape, the material web 4 around the edge of the support element 15 leads. Thus, the life of the web and the security against tearing is increased. Due to the dimensioning of extract element 7 and cradle 2 with hooks 9 , Retaining plate 12 as well as molded sheet 21 is a release of the extract element 7 from the recording device 2 prevented in their closed state. Consequently, a secure hold of the backrest 3 guaranteed. This is additionally increased by the tensile force along the web, which is the extraction element 7 pressed against the mold sheet.

2 B shows the locking unit 17 also without levers 13 , but in open position and unlocked position. Further, by an arrow and the material indicated by dashed lines 4 with the extract element 7 clarifies how this into the cradle 2 between hooks 9 and curvature of the mold sheet 21 is hung. The end 4a the material web 4 forms by stitching, gluing, ultrasonic bonding or the like a tab into which the extract element 7 is introduced.

The sectional view 3 shows an alternative embodiment of a headrest 1 which is identical in most of the features to the previously described figures. Thus, this embodiment also has a support element 15 and a moving device for folding the headrest. However, the support element has 15 a different shape, so a roller blind mechanism 6 for winding and unwinding the material web 4 in the headrest 1 or on the support element 15 a storage space 19 place. The roller blind mechanism 6 has a wave 5 for rolling up the material web 4 on, with a longitudinal end 4b on the shaft 5 is attached. The other longitudinal end 4a the material web is on an extract element 7 is attached, when not in use the backrest 3 in the cradle 2 is arranged (shown in dashed lines). The material web 4 gets off the shaft 5 to the extract element 7 through a narrow gap between the support element 15 and fastener 16 guided. This gap is closed in the event of a force in the X direction on the headrest, causing the material web 4 is clamped and a rolling of the web is counteracted. The pinching also causes an enlarged contact surface between the support element 15 and fastener 16 , Thus, forces are readily transferable from one element to the other, thereby increasing stability. Likewise, the wave 5 still have a locking mechanism (not shown), this in a sudden unrolling of the web 4 from the wave 5 blocked.

On the shaft is a spring for tensioning and rolling up the web 4 or the backrest 3 arranged (not shown). That's the backrest 3 If necessary, quickly and easily from the shaft by pulling on the extension element 7 unrollable and by easing the extract element 7 as fast as easy to roll up and stow away.

Because of the roller blind mechanism 6 in unlocked position accessible to a user is an apron 22 attached to avoid injury. The fender 22 is at one end to the support element 15 arranged and has a shape that corresponds to the roller blind mechanism 6 and the fastener 16 is adapted and essentially describes a "2". The other end is bent, so similar to the retaining plate 12 the material web 4 is protected from sharp edges.

Another alternative embodiment of a headrest 1 with a support element 15 and a moving device is in the sectional view of 4 shown. In this embodiment, the material web 4 in a folded state in the headrest 1 kept. For this purpose, the support element 15 shaped so that a generous storage space 19 between support element 15 and fastener 16 arises. Since in the unlocked state in such an arrangement, the risk of falling out of the web is, is a fender 22 at the hinged joint 18 arranged. This also prevents the trapping of the web during the locking process 4 at the joint 18 , For the storage process of the material web 4 in the headrest is, as shown, low, the pull-out element 7 To arrange close to the joint, as thus additionally the clamping of material is avoided and the process of stowing is easier. Again, this is the other end of the mudguard 22 bent over, so similar to the retaining plate 12 the material web 4 sharp edges, which can reduce the strength of the web by rubbing, just as the user is protected against injury.

The material web 4 points, as in the example before, at a longitudinal end 4a an extract element 7 on. The other longitudinal end 4b however, is on the retaining plate 12 fixed.

5 shows a seat 8th with a headrest 1 in the education of 3 and one on a seat 11 tense backrest 3 or material web 4 , The seat 11 is foldable and has a locking device 19 for a safety belt on. On the seat 11 is a holding device 20 attached, the extract element 7 releasably and positively holds. For reasons of space, the seat is 11 at the holding device 20 arranged hinged opposite side. Thus, the seat can be brought into a vertical position, whereby a flat storage area, such as 6 shows, is created. The seat 11 is folded up substantially vertically and then runs, for example, adjacent to a backrest of a further forward row of seats.

For adjusting the inclination of the backrest 3 It is provided, as detail A shows, between folding hinge 18 and support element 15 To install an adjustment that moves the headrest against the X direction. Thus, the headrest changes 1 their position compared to the holding device 20 , reducing the inclination of the backrest 3 will be changed. Specifically, the pad pushes against the web 4 and pushes them outward. Alternatively, the adjusting device in or on the fastening element 16 be formed so that the fastener moves against the X direction. Such training acts identically to the previously described and moves the web at the headrest end to the outside, bringing the inclination of the backrest 3 is changed.

Furthermore, in 6 instead of the headrest 1 the roller blind mechanism 6 on the seat 11 arranged projecting upwards. In the execution of the 5 Of course, this is not there, because. there the material web is stowed in the headrest. As a result, the headrest 1 (not shown) to save space, since no space for the web 4 is needed. In the 6 shown seat 11 with roller blind mechanism, for example, in combination with the headrest of the 1 be used. The seat 11 is detachable with the storage area via a snap mechanism 23 , which includes a retaining hook with engagement connected. Here is the retaining hook on the seat 11 and the engagement formed in the storage area.

Claims (14)

Headrest ( 1 ) for a seat ( 8th ), in particular a vehicle seat, characterized in that it comprises a device ( 2 ) for receiving a material web ( 4 ) a aufspannbaren backrest ( 3 ) having. Headrest according to claim 1, characterized in that the receiving device ( 2 ) as storage space ( 19 ) for receiving the material web ( 4 ) in the headrest ( 1 ) or for hanging the material web on the headrest ( 1 ) is trained. Headrest according to claim 1 or 2, characterized in that it comprises a movement device for moving the headrest between a use position and an assembly and / or storage position. Headrest according to claim 3, characterized in that the movement device comprises a locking unit ( 17 ) and a hinged joint ( 18 ), in particular a hinge or a film hinge, wherein preferably the locking unit ( 17 ) and the hinged joint ( 18 ) at opposite ends of a support element ( 15 ) of the headrest ( 1 ) are formed. Headrest according to claim 4, characterized in that the locking unit ( 17 ) one preferably by operating a lever ( 13 ) swiveling hooks ( 9 ) for engaging behind a holding device, in particular a spar ( 10 ). Headrest according to one of claims 3 to 5, characterized in that the receiving device ( 2 ) is formed, in the mounting position an end region ( 4a ) of the material web ( 4 ) or at the end region of the material web ( 4 ) attached extract element ( 7 ) and end area ( 4a ) or extract element ( 7 ) by moving the Headrest ( 1 ) in the use position on the headrest ( 1 ). Headrest according to one of claims 3 to 6, characterized in that the material web ( 4 ) by moving the headrest ( 1 ) is tensioned from the mounting in the use position. Seat ( 11 ), preferably for a vehicle, in particular for an automobile, characterized in that it comprises a device ( 2 ) for receiving a material web ( 4 ) a aufspannbaren backrest ( 3 ) having. Seat according to claim 8, characterized in that the receiving device ( 2 ) as storage space ( 19 ) for receiving the material web ( 4 ) in the seat ( 11 ) or for hanging the web on the seat ( 11 ) is trained. Seat according to claim 8 or 9, characterized in that it comprises, in particular in its front lower side region, a pivoting device. Seat ( 8th ), preferably for a vehicle, in particular for an automobile, with a headrest ( 1 ) according to one of claims 1 to 7 and a seat surface ( 11 ) according to one of claims 8 to 10, wherein the material web ( 4 ) is designed so that between headrest ( 1 ) and seat ( 11 ) is tensioned as a backrest. Seat according to claim 11, characterized in that the material web ( 4 ) is rolled up and down, in particular by means of a roller blind mechanism ( 6 ), preferably a shaft ( 5 ) for rolling up the material web ( 4 ) and an extract element ( 7 ), wherein the material web ( 4 ) with a first end region ( 4b ) on the shaft ( 5 ) and with a second, opposite end region ( 4a ) on the extract element ( 7 ) is attached. Seat according to claim 11 or 12, characterized in that the storage space ( 19 ) for receiving the material web ( 4 ) in the headrest ( 1 ) is present and the seat ( 11 ) a holding device ( 20 ) for releasably securing the material web ( 4 ) and in particular the extract element ( 7 ) or that the storage space ( 19 ) for receiving the material web ( 4 ) in the seat ( 11 ) is present and the headrest ( 1 ) a holding device ( 20 ) for releasably securing the material web ( 4 ) and in particular the extract element ( 7 ) having. Seat according to one of claims 11 to 13, characterized in that the material web ( 4 ) is a sheet, preferably a film or a fabric, in particular a woven fabric, net, knitted fabric, knitted fabric or a combination thereof.

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