Land vehicles: bodies and tops – Bodies – Structural detail
Patent
1993-09-24
1997-07-08
Pedder, Dennis H.
Land vehicles: bodies and tops
Bodies
Structural detail
296195, 296198, 296209, B62D 2300
Patent
active
056453124
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a supporting structure of a body of a passenger car.
A known and conventional supporting structure of a body of a passenger car comprises a floor structure with a respective sill which extends in the longitudinal direction on the vehicle side and which a rear wheel housing respectively adjoins towards the rear side of the vehicle. At least one post is used as a connection from the body region above the wheel housing to the roof structure. When a rear, lateral and fixed triangular window is contained in the body, a front post C and a rear post D are used on both sides of this window.
It is further known (German Offenlegungsschrift 3,343,682) to use a wheel-housing carrier as a connection between the sill and the associated post, for example the post C. Such a wheel-housing carrier extends in an arc at least partially around the wheel housing and comes with one end up against the rear sill end approximately vertically from above. The rear door cutout is consequently open very wide and is limited in the lower region by the sill only. This large orifice in the supporting structure constitutes a weak point for a side collision. In addition, it must be remembered that, in the conventional construction with a contraction of the side member between the wheel housing, back-seat bench and axle fastening point, the so-called "dog leg", there is, in any event, a weak point in terms of body rigidity which presents problems.
Moreover, in conventional constructions, the post D terminates in the sheet-metal arch of the upper wheel housing, with the result that a force-flux gap of the side frame between the sill and the post D occurs.
Conventional self-supporting vehicle bodies for passenger cars, including the supporting structure, are produced from sheet-metal parts. Carriers with hollow profiles are each produced from at least two metal sheets welded to one another. The steel sheets used for constructing such bodies are shaped by the deep-drawing process. The press dies for shaping the metal sheets are relatively expensive, but allow high quantities, and therefore a cost-effective solution is available for large-series production. However, in view of the high investment in dies, the process described is highly cost-intensive for small series.
It is therefore known (EP 0,146,716 B1), especially for small series, to produce vehicle bodies for passenger cars with a supporting structure consisting of hollow profiles which are connected to one another by means of junction elements. The hollow profiles are designed as extruded light-metal profiles and the junction elements as light-metal castings. In addition to a more cost-effective solution for small series, such a construction advantageously also achieves lower body weights and improvements in corrosion protection. A supporting structure of a body of a passenger car is shown here, with a floor structure having a sill extending respectively in the longitudinal direction on the vehicle side, with an adjoining respective rear wheel housing, with a post C and a post D for connecting the region above a wheel housing to the roof structure, and with a wheel-housing carrier as a connection between the sill 2 and the posts C and D. Here, the wheel-housing carrier is connected at a connection point in front of the rear end of the sill or at a distance from the wheel housing and therefore towards the middle of the lower door cutout and the sill. Starting from this connection point, the wheel-housing carrier ascends rearwards and upwards at a low angle with a first, lower carrier region. The wheel-housing carrier then subsequently bends upwards in an arc into a more vertical direction with a second carrier region and in this region bears against the rear wheel housing.
The object of the invention is to develop a supporting structure, of the generic type, of a body of a passenger car, so that the body rigidity and the side-collision behaviour in the region of the rear door cutout are improved by a new rear body structure.
According to Claim 1, after the second
REFERENCES:
patent: 2986423 (1961-05-01), Barenyi
patent: 3073647 (1963-01-01), Beltz
patent: 3528699 (1970-09-01), Wessells
patent: 4304434 (1981-12-01), Suzuki et al.
patent: 4462632 (1984-07-01), Grassi, Jr.
Enning Norbert
Timm Heinrich
Audi AG
Finch George W.
Pedder Dennis H.
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