Land vehicles: bodies and tops – Bodies – Structural detail
Reexamination Certificate
1998-12-01
2001-11-13
Pape, Joseph D. (Department: 3612)
Land vehicles: bodies and tops
Bodies
Structural detail
C296S209000
Reexamination Certificate
active
06315353
ABSTRACT:
The invention relates to a body segment for a vehicle in the area of a side panel.
A vehicle body segment of the above-mentioned type is described in U.S. Patent Document U.S. Pat. No. 5,443,297.
This known vehicle body segment has the disadvantage of not being sufficiently safe in the event of a side impact and of requiring a relatively high-expenditure manufacturing.
A side panel subassembly for a motor vehicle body is known from German Patent Document DE 195 31 874 C1.
However, because of the large components which are assembled here to form a subassembly, an extremely large number of tools and machines must be used which increases the manufacturing costs of the vehicle body. Furthermore, the side impact protection is also not perfect.
From German Patent Document DE 195 05 364 A1, a hollow-profile-type vehicle body segment is known which has at least one member element or panel element with a connection area for a functional part or a functional subassembly. In this connection area, an element of a guide rail device is an integral component of the vehicle body segment which was produced from a cohesive blank by means of rolling forming.
In order to increase the resistance of the vehicle body segment to stress, zones are provided in this case which are subjected to a partial hardening or certain surface treatments. For increasing the stiffness, a double-wall rib may also be provided which is rolled into the interior of the vehicle body segment.
However, the construction described there does not provide a particularly high safety and stiffness in the event of a lateral impact of another vehicle.
German Patent Document DE 40 13 784 C2 describes a vehicle body for passenger cars having a side rail and a side member which are each formed of extruded profiles and are connected by a cast part. This construction has the purpose of increasing the rigidity in the area of the connection between the forward side rail and the side member.
However, in this case, it is a disadvantage that the connection element or nodal element is an extremely complicated cast part whose manufacturing requires very high expenditures. Furthermore, the desired safety in the event of a crash can also not be ensured in this manner.
In addition, German Patent Document DE 195 19 779 A1 describes a frame side part of a vehicle body of passenger cars. In this case, the profile parts forming the frame side part are produced by extruding and the connection elements for the profile parts are produced by casting.
The relatively complicated construction and the low safety in the event of a crash is also a disadvantage in this case.
From U.S. Patent Document U.S. Pat. No. 3,176,786, a motor vehicle frame is known which has side rails and cross members. This frame represents a construction which had been customary for a long time but by far no longer corresponds to today's safety requirements.
It is therefore an object of the invention to provide a vehicle body segment for a vehicle, particularly in the area of a side panel, which, in the event of a lateral impact, is capable of absorbing high forces and thus contributes to an increase of the vehicle safety. The vehicle body segment according to the invention must be producible at reasonable expenditures.
According to the invention, this object is achieved by providing that the profile part is constructed of a high-strength steel with a profile having pronounced displacements to the exterior side of the vehicle body.
By displacing the profile toward the exterior side of the vehicle body, the C-shaped profile part obtains a very high stiffness and can absorb the high forces occurring in the event of a side impact. The high stiffness of the profile part is also promoted by the use of a high-strength steel.
In this case, the production of the profile part by means of roll forming was found to be particularly advantageous because, by means of this process, the required, very pronounced displacement of the profile toward the exterior side of the vehicle body can be carried out. The profile part can absorb the more forces, the more pronounced the displacement toward the exterior side of the vehicle body, or the lower the profile.
In this case, the closing parts according to the invention, which are constructed in the manner of a stop slope, are used for supporting the interior A-column part and the interior B-column part on the profile part, which improves the stability of the whole vehicle body segment.
REFERENCES:
patent: 3176786 (1965-04-01), Seidl
patent: 4552400 (1985-11-01), Harasaki et al.
patent: 4911495 (1990-03-01), Haga et al.
patent: 5246264 (1993-09-01), Yoshii
patent: 5332281 (1994-07-01), Janotik et al.
patent: 5362120 (1994-11-01), Cornille, Jr.
patent: 5443297 (1995-08-01), Tanaka et al.
patent: 5641194 (1997-06-01), Honma et al.
patent: 5671968 (1997-09-01), Masuda et al.
patent: 5820204 (1998-10-01), Masuda et al.
patent: 5938275 (1999-08-01), Kleinhans et al.
patent: 195 31 874 C1 (1994-01-01), None
patent: 195 19 779 A1 (1995-12-01), None
patent: 195 05 364 A1 (1996-08-01), None
patent: 40 13 784 C2 (1996-10-01), None
patent: 0 728 656 (1996-08-01), None
patent: 404081371 (1992-03-01), None
Brodt Martin
Determann Reinhard
Wollensak Karl
Daimler-Benz Aktiengesellschaft
Pape Joseph D.
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