Chairs and seats – Bottom or back – Cushioned
Patent
1994-02-22
1995-10-31
Dorner, Kenneth J.
Chairs and seats
Bottom or back
Cushioned
29745221, 29745254, 29745215, 29745218, A47C 702, A47C 718
Patent
active
054623391
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
For vehicle seats it is well known to provide seating parts made up of a lower support part comprising a pressed steel sheet framework provided with various spring fittings, such as elastic webbing or packets of steel springs, as in upholstered seats for chairs or armchairs, on which the seat upholstery is placed.
In a known example of this kind (German Utility Model 77 28 111) a plurality of transverse elastic belts are provided upon which an upholstery body lies, the upholstery body having in the forward region a transverse rail-like support body as a precaution against the user of the seat sliding forward in the event of heavy braking or in case of an accident. This solution is, however, very costly and for this reason has not found acceptance.
Other known proposals of this kind also employ special parts or structures for the individual functions, such as providing padded and resiliently yielding seating and providing security of the person using the seat against slipping from the seat on strong deceleration of the vehicle, but this leads to too great an outlay, excessive weight and complicated and failure-prone constructions.
Thus German Patentschrift No. 39 07 942 discloses an underframe, a thick upholstery seat cushion, a seat frame for this cushion, a multiplicity of helical steel compression springs acting between a frame and the underframe, and a wide, pivotable stirrup with a means for blocking the stirrup.
SUMMARY OF THE INVENTION
The object of the invention set forth in claim 1 is to provide a comfortable, simple and economic automobile seat that has good vibration damping and shifts the regions of natural vibration of the overall seat structure that usually occur, that as a rule coincide with those of the main parts of the human body, and are unpleasant and damaging to health, so that they no longer cumulatively affect the user of the seat, and provides security against the person in the seat slipping forward in response to strong deceleration, for example in a crash situation.
The particular advantages of the invention are that the combined use of the seat shell not only as a support for the upholstery cushion but also as a lower spring element and a crash protection barrier provides for a vehicle seat that is less costly, and hence more economic, that more reliably supports the seat user from sliding forward off the seat a crash situation, that is relatively light, and that has an overall natural frequency lying outside the region of natural frequencies of parts of the human body. A significant reduction in outlay is achieved through the possibility, offered when forming a seat shell in accordance with the invention, of employing an upholstery cushion which is particularly thin in relative terms.
DESCRIPTION OF THE DRAWINGS
Exemplary embodiments of the invention are shown schematically in the drawings, in which:
FIG. 1 shows a perspective view of an embodiment of the invention, in which frame and seating area are formed in one piece,
FIG. 2 shows a corresponding cross-section taken along line A-B in FIG. 1, supplemented with complete upholstery,
FIG. 3 shows a seat similar to that of FIG. 1, but with n two-piece construction,
FIG. 4 shows a section taken along line C-D in FIG. 3,
FIG. 5 shows a perspective view of a vehicle seat with the seat shell additionally resiliently mounted at the rear,
FIG. 6 and FIG. 7 show perspective views of further modified embodiments,
FIG. 8 shows a section taken along line E-F of FIG. 7,
FIG. 9 shows a modification of FIG. 8.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A seat shell 2 with a frame 3 of a base structure 1 of seating part of a vehicle as shown in FIG. 1 is made in piece by non-chip forming from steel sheet by deep drawing, pressing and cutting. In the lower part of the frame 1 connectors (not shown) are provided for mounting and location of the complete seat on the vehicle floor.
In a forward region 5 of the base structure 1, the structure is raised at its forward edge and on each side, with a middle region 4 f
REFERENCES:
patent: 2530924 (1950-11-01), Turner
patent: 3222698 (1965-12-01), Levenson
patent: 4307914 (1981-12-01), Grandclement
patent: 4458943 (1984-07-01), Krakauer
patent: 4460887 (1987-04-01), Fleming et al.
patent: 4875734 (1989-10-01), Yokoyama
Schmale Gerhard
Sommer Norbert
Zynda Martin
Barfield Anthony
Dorner Kenneth J.
Kalinowski Leonard
Levine E. L.
Naue/Johnson Controls Engineering Verwaltungs GmbH
LandOfFree
Sitting section of a vehicle seat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sitting section of a vehicle seat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sitting section of a vehicle seat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1768105