The present invention relates to a structural part and to a vehicle seat having a backrest.
Backrests for vehicle seats are generally known. For example, documents DE 10 2006 036 935 A1 and DE 10 2005 043 084 A1 disclose, respectively, a backrest for a seat bench of a vehicle and a construction set for producing a tiltable backrest for a seat bench of a vehicle. Here, to reinforce the backrest for the absorption of forces which may occur on account of a safety belt arranged in the region of the backrest of a rear seat bench, use is made of continuous profile parts or reinforcement elements which fully traverse a frame produced for example from profile parts, that is to say are fastened to a plurality of frame limbs or profile parts. The reinforcement elements used here are however comparatively large and heavy, resulting firstly in high cost expenditure and secondly in a high weight of a backrest of said type.
Therefore, the present invention is based on the object of specifying a structural part, in particular for a backrest of a vehicle seat, and a vehicle seat having a backrest, in particular for a rear seat bench of a vehicle, such that a reinforcement element, in particular for absorbing belt forces, can be formed to be considerably lighter and therefore also cheaper, and nevertheless a high level of safety is ensured for the occupants of the motor vehicle.
The object is achieved by means of a structural part, in particular for the backrest of a vehicle seat, with the structural part having at least one panel element and also having a reinforcement frame which has at least one first profile element and one second profile element and which runs substantially along the edge of the panel element, with a reinforcement element being provided at least partially within the plane of the reinforcement frame, and also with the reinforcement element being connected only to the first profile element and to the panel element. According to the invention, a particular advantage is attained in that particularly simple and fast production of the structural part is possible as a result of a connection only to one of the profile elements which form the frame. The object is also achieved by means of a vehicle seat, in particular rear seat bench of a vehicle, having a backrest and if appropriate having a seat part, with the backrest and/or the seat part having at least one structural part according to the invention.
It is very particularly preferable according to the invention for the reinforcement element to be provided for connecting a belt retractor of a safety belt, with a belt deflecting device which is assigned to the belt retractor being connected to the first profile element and/or to the reinforcement element, or it is preferable for the reinforcement element to extend, in the region of the first profile element, over 30% to 80% of the extent of the first profile element, preferably over 40% to 70% of the extent of the first profile element, particularly preferably over 45% to 65% of the extent of the first profile element, very particularly preferably over 50% to 60% of the extent of the first profile element. In this way, it is particularly advantageously possible for an introduction of belt forces, or of forces arising from the connection of belt fastening components, into the frame or into the reinforcement frame produced from the profile elements to be possible in such a way that, firstly, the loading is distributed over a comparatively large area, and secondly, the panel element can also be incorporated in a substantial way for absorbing stresses. In this way, it is very advantageously possible according to the invention for the actual reinforcement element for connecting for example a belt retractor to be produced in a comparatively lightweight and cheap form, and to thereby also contribute less to the overall weight of the vehicle seat or backrest.
It is very particularly preferable according to the present invention for the first and/or second profile element to be connected at least partially by means of a butt weld to the panel element. This means in particular that for example a limb of one of the profile elements is connected with its edge (which runs along the profile part and which has substantially only the surface area of the material thickness multiplied by the length of the edges) to the surface of the panel element by means of a welding operation. It is also preferable according to the invention for said type of welding to be carried out by means of a laser (laser welding), with the laser beam being applied from that side of the panel element which faces away from the profile element (to be welded). It is also preferable according to the invention for the reinforcement element to be connected to the panel element and/or to the reinforcement frame by means of laser welding.
It is also preferable according to the invention for the first and/or second profile element to be provided as a U-shaped profile and/or a C-shaped profile and/or a Z-shaped profile, wherein in cross section, the limb end or limb ends of the first and/or second profile element are preferably provided without fastening lugs. The invention however does not completely rule out that the first and/or second profile element may (also) have lugs. According to the invention, it is particularly preferable for the first and/or second profile element to have a shape or a cross section which is such that, after the connection to the panel element, a hollow profile is formed which has a comparatively high degree of stability. According to the invention, U-shaped profiles or C-shaped profiles in particular (which in cross section have an open side which is closed, so as form a hollow profile, as a result of the connection to the panel element) are suitable for this purpose. According to the invention, it is however also possible for the first and/or the second profile element to be designed as an L-shaped profile or as a Z-shaped profile. It is possible even with a profile element of said type, in particular together with a deformed edge of the panel element, for a hollow profile to be generated (after assembly).
It is provided according to the invention in particular that the profile elements together form either a closed (in particular substantially tetragonal or rectangular) reinforcement frame or else merely a U-shaped arrangement on the panel element. To realize a completely closed frame, it is provided according to the invention in particular that four profile elements (the first and second profile elements together with a third and a fourth profile element) are provided, with each profile element being connected firstly to the panel element and with each profile element secondly being connected to two of the other profile elements so as to form the frame.
According to the invention, it may likewise be provided that more than four profile elements are used to complete the frame; in particular, it may also be provided according to the invention that corner pieces or corner profile elements are provided in the corner regions of the frame.
Exemplary embodiments of the invention are illustrated in the drawing and will be explained in more detail in the following description.
According to
Also illustrated in
10 Vehicle seat
15 Seat part
20 Backrest
21 Structural part
30 Panel element
40 Reinforcement frame
41 First profile element
42 Second profile element
43 Third profile element
44 Fourth profile element
50 Reinforcement element
55 Belt deflecting device
56 Connecting location for a belt retractor
57 Connecting location for a side lock
58 Pivot axle
210 Known structural part
300 Known panel element
400 Known reinforcement frame
500 Known reinforcement element
550 Known belt deflecting device
560 Known connecting location for a belt retractor
570 Known connecting location for a side lock
580 Known pivot axle
Number | Date | Country | Kind |
---|---|---|---|
10 2008 020 290.8 | Apr 2008 | DE | national |
This application claims priority from and the benefit of PCT Application No. PCT/EP2009/002929, filed on Apr. 22, 2009; and German Patent DE 10 2008 020 290.8, filed on Apr. 22, 2008; all entitled “Structural Part and Vehicle Seat Comprising a Back Rest”, which are herein incorporated by reference.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP2009/002929 | 4/22/2009 | WO | 00 | 2/22/2011 |