Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
  • B62D25/08—Front or rear portions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
  • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
  • B62D21/152—Front or rear frames
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/023—Details
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/04—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/24—Arrangements for mounting bumpers on vehicles
  • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
  • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
  • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body

Definitions

• Body assembly for a motor vehicle which is designed in particular for a collision with low coverage
• the present invention relates to a body assembly for a motor vehicle which is particularly adapted for a low overlap collision, comprising a side rail assembly and a bumper cross member attached to one end of the side rail assembly.
• a known motor vehicle in particular has a left side member and a right side member, which may also be called a motor support in a motor vehicle with front engine, at the front end of a bumper cross member is arranged.
• a so-called crash element or deformation element can be arranged between the actual side member and the bumper cross member, which is designed to be interchangeable and to protect the side member against irreversible damage in collisions at low speed.
• the bumper cross member projects beyond the left and right side members
• a bumper system with a deformation element which is arranged between the longitudinal member or a crash box and the cross member.
• the deformation element lies with its inner wall substantially flat against the side member and the crash box and is also flat with the
• Deformation element which is supported on the side member or the Crashbox deformed. As a result, the accident opponents are pushed away from each other by the deformation. On the other hand, collision energy is absorbed by the plastic deformation.
• a body assembly according to the invention for a motor vehicle has a side member assembly, a bumper cross member and a support member.
• a bumper cross member is attached to one end of the side rail assembly and an end portion of the bumper cross member projects in the transverse direction beyond the side rail assembly.
• the support element is attached to the end portion of the bumper cross member and extends over a predetermined length in the vehicle longitudinal direction to the rear. Preferably, the support element extends substantially parallel to the side member assembly.
• the support element is arranged at a predetermined distance from the side member assembly or
• the support element according to the invention is designed and arranged such that in the case of a deformation of the end portion of the
• the support element is made of a plastic, preferably made of a fiber-reinforced plastic or
• Fiber-reinforced plastic composite material formed.
• Longitudinal support assembly can deform sufficiently without interfering with the support element or be influenced by the support element in its deformation. Furthermore, as a result, the support element can be displaced along the side member assembly in the event of a collision with greater or less overlap without interfering with the side member assembly. Conversely, the support element in the frontal collision with low coverage on the
• Transverse impulse is generated on the accident opponents and they are pushed away from each other, so that less total collision energy must be reduced by the motor vehicle, in particular the body assembly.
• the spacing of the support element from the side rail arrangement allows at least some deformation of the end section of the bumper cross member at the beginning of the frontal collision with little overlap, thereby enabling a better sliding of the accident opponents against each other.
• Supporting element for the same function can be further reduced.
• the fiber-reinforced plastic composite material may contain, for example, carbon fibers and / or glass fibers and / or aramid fibers and / or natural fibers.
• the fibers may be in the form of short fibers and / or long fibers.
• Supporting element formed with such a distance from the side rail assembly, that the support element in the event of a frontal collision a
• the support element is designed such that it has a
• Deformation of the side member assembly does not hinder or limit.
• the side member assembly has a side rail and a deformation element.
• the deformation element is at one end, in particular the front end of the longitudinal member, for example, releasably secured.
• the bumper cross member is attached to the deformation element.
• the deformation element can be a so-called crash box, which is energy-absorbing deformable in collisions with low energy, in particular a frontal collision with high coverage or complete coverage at low speed, without the longitudinal beam is irreversibly damaged. As a result, repair costs can be kept relatively low in collisions at low speed.
• the support element is spaced from the deformation element formed such that the support element in a low-velocity frontal collision and in particular large or complete overlap, in which the longitudinal beam is not to be damaged, a predetermined deformation of the deformation element permits and the support element with the side member assembly and in particular the side member does not engage.
• a low speed is a speed less than or equal to a speed threshold, for example, about 15 or 20 km / h.
• a speed threshold for example, about 15 or 20 km / h.
• the support element is advantageously not damaged in the frontal collision with large or complete coverage and does not need to be replaced.
• the support element does not engage with the longitudinal member by the spacing with progressive deformation of the deformation element and thus prevents damage to the
• Body assembly, the support element, the side rail assembly and the bumper cross member are arranged substantially in one plane.
• This plane preferably extends substantially parallel to a longitudinal axis and a transverse axis of the motor vehicle or the body.
• the support member has an inner side that extends substantially parallel to a side surface of the side rail assembly, and a front side that is substantially parallel to a rear side of the end portion of the
• the support element may preferably have an outer side that connects the inside and the front side.
• the Bumper cross member and can thus optimally transmit forces that on the Bumper cross member may be applied as a result of collision with low coverage.
• the support member may be supported by the side surface which extends parallel to the side rail assembly, after initial deformation of the end portion of the bumper cross member surface on the side rail assembly and thereby introduce optimal forces in the side rail assembly.
• the support element is substantially wedge-shaped, wherein in particular the inside and the outside form a tip of the wedge.
• the wedge-shaped form is under the given conditions between the
• the support element is designed and arranged such that it does not significantly deform in a frontal collision with low coverage under support on the side rail assembly.
• End section of the bumper cross member optimally forces in the
• the support element is preferably produced, for example, as a plastic injection-molded part.
• the support element is particularly easy to produce and may have a low weight.
• the support member and the side rail assembly may be formed to each other so that upon impact of the support member on the Side member assembly as a result of the frontal collision with little overlap engagement between the support member and the side rail assembly takes place, which prevents sliding of the support member on the side rail assembly or at least restricts.
• a transverse pulse acting on the motor vehicle can advantageously be increased.
• the support element is flat against the end portion of the bumper cross member and in particular is rigidly connected to the end portion of the bumper cross member.
• the support element is formed with cavities which are separated by a rib structure and which extend parallel to the end portion of the bumper cross member.
• the support member Through the cavities a weight of the support element can be reduced, wherein the rib structure ensures the necessary strength and rigidity of the support element.
• the support member By forming the cavities parallel to the end portion of the bumper cross member, the support member has sufficient strength and rigidity to transmit lateral forces in the event of a low overlap collision to the side rail assembly.
• the cavities are formed in pairs and separated by a central rib of the rib structure.
• the cavities can be arranged one above the other and / or one behind the other.
• the support element is preferably formed in one piece.
• the side rail assembly of the body assembly according to the present invention may be part of a so-called main load path in the event of a frontal collision.
• a main load path is the load path which, in the event of a collision, absorbs a large part of the collision load and possibly degrades it.
• a body assembly according to the invention preferably has a left and a right side rail assembly, a left and a right support member, which are respectively arranged at a left end portion of the bumper cross member and at a right end portion of the bumper cross member.
• Fig. 1 is a schematic plan view of a body assembly according to an embodiment of the present invention.
• FIG. 1 a left front portion of a body assembly of FIG.
• Body assembly is constructed in mirror symmetry as well as the left front portion of the body assembly. To avoid repetition, however, only the left front portion of the body assembly is described below.
• the body has a left side member 1, at the front end of which a crash box 3, which constitutes a deformation element according to the invention, is arranged.
• a crash box 3 which constitutes a deformation element according to the invention.
• the left end portion 6 extends beyond the crash box 3 and the longitudinal member 1 in the transverse direction.
• an inventive support member 7 fixed via fastening means 32.
• the side member assembly consisting of the side member 1 and the crash box 3 as well as the bumper cross member 5 with the end portion 6 and the
• Supporting element 7 are all arranged substantially in a plane parallel to a vehicle longitudinal direction and a vehicle transverse direction.
• Supporting element 7 is formed at a distance b from the crash box 3, wherein the support element 7 is fixed neither on the longitudinal member 1 nor on the crash box 3.
• the support element 7 has a maximum length a in the vehicle longitudinal direction.
• the support element 7 is a fiber-reinforced plastic injection-molded part which is provided with a suitable stiffening rib structure or honeycomb structure - the rib structure is shown schematically in FIG. 1 - and has a substantially wedge-shaped form.
• the rib structure is formed such that the
• Supporting element 7 can be produced by means of second tool halves.
• the honeycombs are arranged in pairs, wherein the honeycomb pairs are separated by a central rib. There may be two or more honeycombs on top of each other. In the present embodiment, two honeycombs are arranged one above the other. Furthermore, several honeycombs can be arranged one behind the other. In the present embodiment, four honeycomb are arranged one behind the other in the direction of travel. The honeycombs are separated by the rib structure and are open at the sides.
• the support element 7 is fastened to the bumper cross member 5 with, for example, two bolt connections.
• the bumper cross member 5 may be formed of a metallic material such as steel or aluminum.
• the wedge has an inner side 71, which runs essentially parallel to the crash box 3 or the side member 1, and a front side 73, which extends substantially parallel to the end portion 6 of the bumper cross member 5 and rests flat against this. Furthermore, the wedge has an outer side 75 that connects one end of the front 73 to one end of the inner side 71. Basically, that can Supporting element 7 also have a different shape, if this has the function described later.
• the crash box 3 is connected via fastening means 31 and 52, z. As screws, releasably fixed to the side member 1 and the bumper cross member 5.
• the fastening means 31 form a screw connection 31 in a transverse direction with the longitudinal member.
• the collision opponent hits directly on the side rail assembly or at a location between the left and right side rail assemblies.
• the crash box 3 In the case of such a frontal collision with high coverage and a low speed, for example, less than about 15 or 20 km / h, preferably only the crash box 3 is deformed without the side rail 1 is irreversibly damaged. In this case, it is necessary for the crash box 3 to have sufficient space in the transverse direction, i. in the y direction of one
• Vehicle coordinate system for deformation, which is ensured by the distance b between the support member 7 and the crash box 3.
• the crash box 3 In the collision with large coverage and low speed while the crash box 3 is increasingly deformed, i. compressed, with the
• the support element 7 also moves in the direction of the longitudinal member until it possibly overlaps with the longitudinal member 1 in the vehicle transverse direction, but does not substantially engage with the longitudinal member 1 through the predetermined distance b and damages it. Accordingly, the support element according to the invention 7 affected by the inventive arrangement, a function and effect of the crash box 3 in a frontal collision with high coverage not advantageous. In the case of a frontal collision with low coverage, in which a
• Bumper crossmember i.
• the end portion 6 of the bumper cross member 5 is first deformed until the inside 71 of the support member 7 strikes the crash box 3 or possibly also on the longitudinal beam 1 and is supported there.
• the inside 71 of the support element 7 thereby also with the
• the support element 7 is designed to be relatively stiff, so that it does not deform initially or at least only slightly during the collision and thereby a collision load sufficiently on the side member assembly consisting of the crash box 3 and the side member 1 is supported and initiates the load in the side rail assembly.
• a transverse pulse is generated between the motor vehicle and the collision opponent, so that they are advantageously pushed away from one another.
• a crash structure of the motor vehicle advantageously has to absorb significantly less collision energy.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Body Structure For Vehicles (AREA)
• Vibration Dampers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53872073

Family Applications (1)

Country Status (6)

Families Citing this family (13)

Citations (1)

Family Cites Families (11)

• 2014
  • 2014-08-20 DE DE102014216478.8A patent/DE102014216478A1/de not_active Withdrawn
• 2015
  • 2015-08-19 WO PCT/EP2015/069036 patent/WO2016026893A1/de active Application Filing
  • 2015-08-19 CN CN201580044637.3A patent/CN106573651A/zh active Pending
  • 2015-08-19 US US15/502,848 patent/US20170225713A1/en not_active Abandoned
  • 2015-08-19 EP EP15750780.7A patent/EP3183141A1/de not_active Withdrawn
  • 2015-08-19 MX MX2017002191A patent/MX2017002191A/es unknown

Patent Citations (1)

Non-Patent Citations (1)

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