DE10003624A1 - Safety arrangement for a vehicle, in particular, a motor vehicle comprises hinge units whose elements attached to the pivotable bonnet are laterally offset from the elements attached to the vehicle body structure - Google Patents

Abstract

The safety arrangement for a vehicle, in particular, a motor vehicle (1) comprises hinge units (3) whose elements (9) attached to the pivotable bonnet (4) are offset - in the direction towards the longitudinal central axis of the vehicle - from the elements (7) attached to the vehicle body structure (12). This ensures that - in the case of an impact on the bonnet - the hinge elements (9) and hence the bonnet itself are free to move downwards.

Description

The invention relates to a safety device on the front hood of a Vehicle, in particular a motor vehicle, according to the preamble of the An saying 1.

A generally known, generic safety device has a hinge arrangement on the front hood-side share nierteil and a body-side body hinge part comprises. By means of the Hinge arrangement is a front hood, preferably on both sides of the Vehicle, pivoted on the vehicle.

Specifically, the hinge arrangement here is via the body hinge part a fender seat of the vehicle body. The body share nierteil is coupled to the bonnet hinge part so that the two Hinge parts in the bonnet rest position lie directly one above the other. The disadvantage of this structure is that in the event of a collision of the vehicle with a pedestrian, cyclist etc. and a possible impact of the same on the The front bonnet hinge part and the body hinge part go on block relatively quickly, so that in this area no great deformation path for impact energy absorption is available.  

The front hood is also made of an upper plate and a lower plate built up, which are preferably connected to each other in edge areas. On the lower panel are to stiffen the edge of the hood from the bonnets underside projecting stiffening beads formed in Be range of the rear hood edge in the vehicle transverse direction and thus at ge closed bonnet with only a small deformation distance almost directly in the area above the shock absorber arranged laterally recordings run. The disadvantage of this structure is that in the event of a collision of the vehicle with a pedestrian, cyclist etc. and a possible impact the same on the front hood, the front hood on the stiffening beads right can move relatively quickly onto the block with the shock absorber mount. this leads to unfavorable energy absorption properties and possibly impairment pedestrian, cyclist etc.

It is therefore an object of the invention to provide a safety device on a To create a vehicle with a collision with a front hood favorable deformation and thus energy absorption behavior can be achieved.

This object is achieved with the features of claim 1.

According to claim 1, the bonnet hinge part is opposite the check series hinge part in the direction of the vehicle's longitudinal center from a side Side member area, in particular a fender bench, ver inwards sets such that in the event of an impact on the front hood, the front hood Hinge part on the body hinge part and on the side longitudinal member is richly lowered down over.

With such a structure there is a larger deformation path overall available because the two hinge parts are not here in the event of an impact block, but the bonnet hinge part on the body Hinge part can be lowered down over. So that is in this  Range a deformation of the favorable for an advantageous energy absorption Front hood possible. Next is with such a structure in particular also targeted force transmission and redirection for targeted and control Impact energy absorption possible, so that the risk of impairment a pedestrian, cyclist etc. in the event of an impact on the front hood can be reduced.

Basically there are various options for the front hood share nierteil opposite the body hinge part towards the vehicle longitudinally inwards from the side longitudinal member area offset. So it is basically possible that the body hinge part is formed in a conventional manner and the bonnet hinge part bent to the point of articulation, e.g. B. outwards from the vehicle along the middle and downwards. In a be according to claim 2 preferred embodiment, however, is the body hinge part to steering point of the bonnet hinge part towards the inside and up cranks so that the articulation point is roughly at the inner edge of the lateral side member area. With such a structure is a be particularly advantageous and almost unhindered lowering of the bonnet Hinge part on the body hinge part and on the side longitudinal member rich over possible. Furthermore, with such a structure is also a simple connection of the front offset towards the center of the vehicle hood hinge part possible on the body hinge part, so that a derar term structure without much effort and therefore inexpensive to manufacture. Of further, such a structure is also easily different construction situations in different vehicle types adaptable so that this Setup especially for large series production, such as in the automobile construction is the case is suitable.

In a preferred embodiment according to claim 3, the front hood Hinge part approximately L-shaped. Here, a first L-leg runs  Starting from the point of articulation on the body hinge part, roughly in driving longitudinal direction, while a second L-leg preferably from one the leg end opposite the articulation point of the first L- Leg starting approximately in the vehicle transverse direction, preferably along of the cowl area. By bending the front like this hood hinge part results in a vehicle longitudinal direction small and compact design, which helps to ensure that the front hood Hinge part, if necessary, out of an impact-critical area of the front hood can be placed. The second L-leg is preferably plate-shaped mig trained and can be fixed on the front hood in a conventional manner, e.g. B. welded.

In a preferred embodiment, the hinge arrangement is according to An saying 4 in the rear front section in the area of an A-pillar net, wherein the pivot axis of the hinge assembly according to claim 5 in Area of the A-pillar root. The hinge arrangement is preferred according to claim 6 within an approximately 80 mm from the lower draft shield disc area spaced area arranged. With all these measures it is achieved that the hinge arrangement in a for an impact, in particular a head impact, relatively uncritical area is arranged. This eliminates the risk of impairment to a pedestrian, bike reduce driver etc. in the event of an impact.

In a particularly preferred embodiment according to claim 7, the Front hood made of a preferably thin-walled top plate, preferably made of steel and / or aluminum, and a preferably rah menu-like and / or thin-walled bottom plate, preferably made of Steel and / or aluminum. The top plate and the bottom plate are preferably on the edge, for example by flanging, welding or Like. interconnected.  

It is further preferably provided according to claim 8 that in the Area of a strut mount at least one of the bonnets below Stiffening bead protruding downwards. The least a stiffening bead is necessary to form a sufficiently large deforma distance between the strut mount and the bonnet underneath side in the area above the strut mount around this. Such an arrangement of the at least one reinforcement is advantageous Sungssicke achieved that an overall large deformation distance between the suspension strut mount and the front hood is created, because here additional Lich the height of the stiffening beads on the underside of the bonnet as Defor distance is obtained. This results in an impact the front hood has overall favorable energy absorption properties. Total together with such a structure, the risk of impairment can therefore arise against a pedestrian or a cyclist etc. in the event of an impact on the Front hood can be reduced. No undesirable are further advantageous here major structural changes necessary because it is to achieve a larger deformation distance is not required, e.g. B. the front hood as to move the whole thing up. With such a structure there is also on the underside of the bonnet an advantageous and favorable flow of power over the at least one stiffening bead around the strut mount, so that overall also a targeted and controlled application of force and Force redirection for favorable deformation and energy absorption behavior ten is possible.

According to claim 9, at least on the lower plate are particularly advantageous two stiffeners protruding downwards from the underside of the bonnet beads formed, preferably together with the top plate a ge Form closed support profile. A first stiffening bead is here formed on the edge and a second of the at least two stiffening beads spaced inward to the center of the bonnet. It is the distance between the first and second stiffening beads at least in the area  Above the strut mount is designed so that it is trained a strut clearance around the strut mount. With such a structure, the front hood is sufficiently ver overall stiffens, with the spaced arrangement of the stiffening beads in the This area also ensures that the front hood in this area is designed to be softer overall. Furthermore, with such a a particularly advantageous introduction and redirection of force possible.

In an advantageous embodiment, according to claim 10 is in the range of the strut clearance outside the area of the underlying spring leg support, preferably in a peripheral area of the shock absorber free room, the bonnet hinge part can be attached. So overall this is it There is a risk of the individual components going into blocks due to their offset order to each other significantly reduced, so that the structure one for one favorable deformation behavior has an optimized structure. Possibly can also integrate other functional parts in this area to save space be cured.

For another advantageous energy absorption option, according to An Say 11 provided in the area of the at least one frame recess to arrange a deformation element of the frame-like lower plate. This Deformation element can be connected to the underside of the top plate preferably glued, and further preferably from a foamed Ma material, such as polyurethane foam. With such a Deformation element is a damping to the underlying, not defor mable vehicle parts, such as an internal combustion engine, possible Lich.

According to claim 12, the Defor made of foamed material Mationselement on the underside of a base plate, preferably made of art fabric, aluminum or steel. In particular, with such a base plate  achieved that the deformation element better during assembly is manageable.

The invention is explained in more detail below with the aid of a drawing.

Show it:

Fig. 1 is a schematic, partial perspective view of a vehicle with a safety device according to the invention, in which a Fronthau ben-hinge part with respect to a body hinge part in the direction of being offset to the vehicle longitudinal middle inside,

Fig. 2 is a schematic, partial bottom view of a front hood, and

Fig. 3 is a schematic sectional view taken along the line AA of FIG. 2.

In Fig. 1, a partial view of a driving tool 1 is shown schematically and in perspective. This vehicle 1 comprises a safety device 2 , which in turn comprises a hinge arrangement 3 .

By means of this hinge arrangement 3 , a bonnet 4 can be pivoted on both sides of the vehicle 1 between a bonnet rest position 5 shown in FIG. 1 and a bonnet opening position not shown here.

The hinge arrangement 3 comprises a body hinge part 7 arranged on a fender bench 6 and a front bonnet hinge part 9 coupled to the body hinge part 7 at an articulation point 8 .

The hinge arrangement 3 is arranged in the area of an A-pillar 10 within an area D spaced approximately 80 mm from the lower windshield area, which is less impact-critical than adjoining it in the direction of the front end of the vehicle, in the area of an A-pillar 10 , one through the articulation point 8 between the Body hinge part 7 and the front hood hinge part 9 extending pivot axis 11 in the area of the A-pillar root 12 is below a windshield 13 .

As can also be seen from FIG. 1, the body hinge part 7 is bent towards the articulation point 8 inwards and upwards, so that the articulation point 8 lies approximately at the inner edge of the fender bank 6 . The front hood hinge part 9 is approximately L-shaped, a first L-leg 14 extending from the point of articulation 8 on the body hinge part 7 starting approximately in the longitudinal direction of the vehicle and a second L-leg 15 from a leg end opposite the articulation point 8 the first L-leg 14 runs along the cowl area 16 approximately in the vehicle transverse direction.

With such a structure it is achieved that the front hood hinge part 9 is offset in relation to the body hinge part 7 in the direction of the vehicle longitudinally outwards from the fender bench area so that in the event of an impact on the front hood 4 the front hood hinge part 9 on the body Hinge part 7 and past the fender bench 6 can be lowered downwards, so that overall a deformation of the front hood which is advantageous for advantageous energy absorption is possible in this area.

As can also be seen from FIG. 1, the second L-leg 15 of the bonnet hinge part 9 is plate-shaped and can be fixed on the bonnet 4 , but this is not shown here for reasons of clarity.

In Fig. 2, a partial bottom view of the front hood 4 is shown schematically. FIG. 3 shows the sectional view along the line AA in FIG. 2.

As can be seen from FIGS . 2 and 3, the front hood 4 is constructed from a thin-walled top plate 17 , for example made of steel or aluminum, and a frame-like bottom plate 18 , which can also be made of steel or aluminum. The top plate 17 and the bottom plate 18 are connected to one another at the edges by, for example, flanging or welding.

On the lower plate 18 two stiffening beads 19 , 20 projecting downward from the front hood underside are formed which, as can be seen in particular in FIG. 3, form a closed support profile together with the upper plate 17 .

The first stiffening bead 19 is formed on the edge side, while the second stiffening bead 20 is offset at a distance from it inwards towards the center of the bonnet. As can be seen in particular from FIG. 2, the distance between the first and second stiffening beads 19 , 20 in the region above a strut mount 21 is designed such that they are guided around the strut mount 21 to form a strut clearance 22 between the stiffening beads 19 , 20 . It is thereby achieved that a sufficiently large deformation distance S is formed between the bonnet underside and the strut mount 21 in the area above the strut mount 21 , as can be seen in particular in FIG. 3. Since we avoid an early block on the front hood 4 in the area of the strut mount 21 avoided. Furthermore, a targeted introduction of force and redirection of force are possible.

As can also be seen from FIG. 2, the bonnet hinge part 9 can also be fastened with the second L-leg 15 in the area of the strut free space 22 outside the area of the strut mount 21 , as shown in dashed lines in FIG. 2 .

From FIGS. 2 and 3 it can also be seen that in the area of a frame recess 23 of the frame-like lower plate 18 a deformation element 24 made of polyurethane foam is provided, which is glued to the underside of the upper plate 18 .

As can be seen in particular from FIG. 3, a base plate 25 , for example made of plastic, aluminum or steel, is provided on the underside of the deformation element 24 . With such a structure of the front panel be 4 , a relatively impact-soft front panel is thus made available overall.

Claims (12)

1. Safety device on a front hood of a vehicle, in particular a motor vehicle,
with a hinge arrangement comprising a front hood-side hinge part and a body-side body hinge part, by means of which a front hood, preferably to both sides of the vehicle, is pivotably articulated on the vehicle,
characterized by
that the bonnet hinge part ( 9 ) is offset inwards in relation to the body hinge part ( 7 ) in the direction of the vehicle longitudinal center from a side longitudinal member area ( 6 ), in particular a fender bench,
that in the event of an impact on the bonnet ( 4 ), the bonnet hinge part ( 9 ) on the body hinge part ( 7 ) and on the side longitudinal member area ( 6 ) can be lowered downwards. 2. Safety device according to claim 1, characterized in
that the body hinge part ( 7 ) is bent inwards and upwards towards the articulation point ( 8 ) of the front hood hinge part ( 9 ),
that the articulation point ( 8 ) lies approximately on the inner edge of the side longitudinal beam region ( 6 ). 3. Safety device according to claim 1 or claim 2, characterized in
that the front hood hinge part ( 9 ) is approximately L-shaped,
that a first L-leg ( 14 ) starting from the articulation point ( 8 ) on the body-hinge part ( 7 ) extends approximately in the vehicle's longitudinal direction and a second L-leg ( 15 ) preferably from an articulation point ( 8 ) opposite the leg end of the first L-legs ( 14 ) starting ( 16 ) approximately in the vehicle transverse direction, preferably along the cowl area, and
that the second L-leg ( 15 ) is preferably plate-shaped and can be fixed on the front hood ( 4 ). 4. Safety device according to one of claims 1 to 3, characterized in that the hinge arrangement ( 3 ) in the rear Vorderwa gene range is arranged in the region of an A-pillar ( 10 ). 5. Safety device according to claim 4, characterized in that the pivot axis ( 11 ) of the hinge arrangement ( 3 ) lies in the region of the A-pillar root ( 12 ). 6. Safety device according to claim 4 or claim 5, characterized in that the hinge arrangement ( 3 ) is arranged within an approximately 80 mm from the lower windshield region spaced loading area (D). 7. Safety device according to one of claims 1 to 6, characterized in that the front hood ( 4 ) from a preferably thin-walled top plate ( 17 ), preferably made of steel and / or aluminum, and a preferably frame-like and / or thin-walled bottom plate ( 18 ), preferably made of steel and / or aluminum, which are preferably connected to one another at the edge. 8. Safety device according to claim 7, characterized in
that at least one stiffening bead ( 19 , 20 ) projecting downward from the underside of the bonnet is formed on the lower plate ( 18 ) in the region of a strut mount ( 21 ), and
that the at least one stiffening bead ( 19 , 20 ) for forming a deformation distance (S) between the strut mount ( 21 ) and the underside of the bonnet is arranged on the underside of the bonnet such that it is guided around the strut mount ( 21 ) in the region above half of the strut mount ( 21 ) is. 9. Safety device according to claim 8, characterized in
that at least two stiffening beads ( 19 , 20 ) projecting downward from the lower side of the bonnet are formed on the lower plate ( 18 ), which preferably form a closed support profile together with the upper plate ( 17 ),
that a first stiffening bead ( 19 ) is formed on the edge and a second of the at least two stiffening beads ( 20 ) is offset at a distance therefrom inwards towards the center of the bonnet, and
that the distance between the first and second stiffening bead (19, 20) we nigstens in the region above the spring leg holder (21) is det so ausgebil that they are entrained to form a strut free space (22) to the spring strut mount (21). 10. Safety device according to claim 9, characterized in that in the area of the strut free space ( 22 ) outside the area of the strut seat there down ( 21 ), preferably in an edge-side area of the strut free space ( 22 ), the bonnet hinge nierteil ( 9 ) can be fastened is. 11. Safety device according to one of claims 7 to 10, characterized in
that in the area of the at least one frame recess ( 23 ) of the frame-like lower plate ( 18 ) a deformation element ( 24 ) is provided, and
that the deformation element ( 24 ) with the underside of the top plate ( 17 ) can be connected, preferably glued, and is preferably made of a foamed material, preferably polyurethane foam. 12. Safety device according to claim 11, characterized in that the deformation element ( 24 ) made of foamed material has on the underside a base plate ( 25 ) which is preferably made of plastic and / or aluminum and / or steel.