DE2167305C2 - End area for a motor vehicle body - Google Patents

Description

The invention relates to an end region for a motor vehicle body according to the preamble of Claim 1.

Such a body area is described in US-PS 31,841. With this construction a obtain high mechanical strength of the body with low weight. One body end area Forming support square made of sheet metal profile parts is also described in GB-PS 8 51 432.

If a vehicle with a body end area according to GB-PS 8 51 432 is involved in an accident, so the body end area is compressed parallel to the vehicle axis, both of which were involved in the accident Vehicles remain in the same plane until the kinetic energy of the two vehicles is complete is consumed.

In order to keep the forces acting on the vehicle occupants small, it is desirable that the To make vehicle body so that a colliding on a first vehicle second vehicle in a other level is steered, so that not all of the kinetic energy is caused by deformation of the body must be avoided.

In the body end area described in US-PS 23 31 841 is the outer beam as well as the inner beam connected to the vehicle roof inclined towards the vehicle's transverse center plane and thus forms a ramp-shaped run-up surface for another vehicle. The disadvantage of this construction is on the one hand that the predetermined by the two carrier rectangles Space of the body end area is small, and on the other hand that the ramp surface obtained is straight to a window of the vehicle leads.

The present invention is therefore intended to provide an end region for a motor vehicle body according to the The preamble of claim 1 is developed so that the two support quadrangles in the normal state specify an end area of large volume and at

ίο Deformation due to impact on a ramp surface form, which leads to the vehicle roof

This object is achieved according to the invention by an end region for a motor vehicle body according to FIG Claim 1.

Advantageous further developments of the invention are specified in the subclaims.

With the development of the invention according to claim 2, at the same time as the folding of the support square get a good damping of the impact from the normal geometry in the ramp geometry. Damper cylinders for absorbing shocks are known in and of themselves in connection with bumpers, as the GB-PS 8 11 620 shows There is a plate-shaped Bumpers for a motor vehicle described, weleher is hinged at the upper end and at the lower end via a damper cylinder on a rigid body strut is supported

The development of the invention according to claim 3 is with regard to good visibility with normal geometry the support quadrilaterals and with a view to the large volume of the lateral support quadrilaterals predetermined end range advantageous in connection with no joints having support quadrangles is an essentially horizontal course of the upper one Carrier of the carrier square known per se, as the GB-PS 8 51 432 shows.

The invention is described below using an exemplary embodiment with reference to the drawing explained in more detail. In diesel, uie figure shows a schematic Representation of the supports of a motor vehicle body in the one taken in an accident Configuration (solid lines) as well as the normal configuration used for normal driving (dashed).

The vehicle body shown in the drawing is essentially a mirror image of the vehicle transverse center plane, so that only one half of the body needs to be described below.
At a passenger compartment designated as a whole by 10

so is a support beam 12, which is angled to the vehicle transverse center plane extending inner support 14 supports the upper end of the inner support 14 is attached directly to the passenger compartment 10; at the lower end of the inner beam 14 is a lower beam 16 attached. At the free end of the carrier 16, an outer carrier 20 is attached via a hinge 18. The latter is Connected to an upper support 24 via a further joint 22.

In the normal geometry shown in dashed lines in the drawing, the outer carrier 20 follows inclined upwards and outwards, the upper support 24 lies essentially horizontally.

The end of the upper support 24 facing the vehicle transverse center plane is in the form of a running rail upper portion of the inner carrier 14 out. In the event of a collision with another vehicle or upon impact with a solid obstacle, the outer support 20 is pivoted about the hinge 18, as by

an arrow 26 indicated. This pivoting movement becomes the inner end of the upper beam 24 moved upward to the vehicle roof in the section of the inner support 14 designed as a running rail, so that now outer carrier 20 and upper carrier 24 form a ramp-shaped run-up surface, which leads over a window assigned to the considered body end area Deformation of both body end areas results in a hedgehog-like closed on all sides Body support arrangement, into which an impacting vehicle can no longer penetrate, rather is derived.

As indicated in the right part of the drawing, a damping cylinder 28 can also be provided. which is supported on the lower support 16 and engages the adjacent outer support 20 when it is folded down the outer support from the normal configuration into the ramp geometry is then taken from the damping cylinder 28 kinetic energy destroyed

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Claims (3)

Patent claims: 1. End region for a motor vehicle body, which has lateral support rectangles, each of which consists of one with the vehicle frame rigidly connected, protruding upwards, to the vehicle transverse center plane inclined and connected to the vehicle roof inner support, a rigidly connected to it to the respective fair generating lower carrier, one with this at the respective end of the vehicle connected, obliquely upwardly extending outer carrier and from one with the upper one End of the outer beam and the central portion of the inner beam connected upper beam consist, characterized in that the outer (20) and the upper (24) support each other and are connected to the lower (16) and the inner (14) Träger_gdenkig (18,22) that the outer Trigsr (20) is inclined towards the end of the vehicle, and that the articulation of the upper carrier (24) with the inner carrier (14) in a running rail on the inner carrier (14) up to the Area of the vehicle roof is displaceable 2. End region according to claim 1, characterized in that in each case at least one of the articulated arranged carrier (20, 24) of the carrier square via a damper cylinder (28) with one of the rigid attached carrier (16) of the carrier square is connected 3. End region according to claim 1 or 2, characterized in that the upper «carrier (24) of the carrier square in a manner known per se in the normally taken Si '.lung essentially runs horizontally.