WO2011123012A1 - Bumper arrangement for vehicles - Google Patents

Bumper arrangement for vehicles Download PDF

Info

Publication number
WO2011123012A1
WO2011123012A1 PCT/SE2011/000056 SE2011000056W WO2011123012A1 WO 2011123012 A1 WO2011123012 A1 WO 2011123012A1 SE 2011000056 W SE2011000056 W SE 2011000056W WO 2011123012 A1 WO2011123012 A1 WO 2011123012A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
bumper beam
inverted
central
attachment portions
Prior art date
Application number
PCT/SE2011/000056
Other languages
French (fr)
Other versions
WO2011123012A8 (en
Inventor
Johan Nilsson
Original Assignee
Gestamp Hardtech Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gestamp Hardtech Ab filed Critical Gestamp Hardtech Ab
Publication of WO2011123012A1 publication Critical patent/WO2011123012A1/en
Publication of WO2011123012A8 publication Critical patent/WO2011123012A8/en

Links

Classifications

    • 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
    • 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
    • B60R19/18—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

Definitions

  • This invention relates to a bumper arrangement for vehicles including an open bumper beam in which the central part of the bumper beam between two attachment portions has a central flange and two webs forming a U-section open towards the vehicle, wherein the central flange has a central groove gradually deepening from the centre of the beam to the attachment portions at the ends of the bumper beam so that the beam has an inverted U-section open away from the vehicle, the central groove forming the central flange of the U-section and two webs, the height of which is greatest at the attachment portions, and the original central flange forming side flanges on either side of the U-section.
  • a bumper beam of the aforementioned type is known from WO 2008/057025. It is designed to be fastened by means of a flat portion.
  • WO 2007/136320 describes the attachment of a bumper beam to two crash boxes in which the bumper beam is welded to recesses in the crash boxes.
  • the aim of the invention is to provide improved deformation properties over the entire width of the vehicle in the event of collisions of various types. This is achieved by means of two crash boxes having a closed profile with an upper surface, a lower surface and two vertical sides and having recesses at the ends of the vertical sides adapted to the inverted U-section of the bumper beam and welded to the inverted U-section at the attachment portions, wherein the inverted U-section continues beyond the attachment portions with the web height decreasing towards the ends.
  • Figure 1 is a perspective view of a bumper arrangement according to this invention, the bumper beam being viewed from the outside towards the vehicle.
  • Figure 2 shows the same arrangement viewed from the vehicle and outwards.
  • Figure 4 is a section along the line 4-4 in Figure 3.
  • Figures 5 and 6 show a section along the line 5-5 in Figure 3, but with the elements separated.
  • the figures show a bumper beam 11 attached to two crash boxes 12, 13.
  • the crash boxes are designed to be attached to load-bearing parts of the vehicle.
  • the crash boxes are usually attached to the ends of the side beams of the vehicle by means of bolts so that the bumper, i.e. the bumper beam and the crash boxes, can be mounted and removed as one unit.
  • the bumper beam is provided in its central section with a central flange 14 and two webs 15, 16.
  • the webs end in side flanges 17, 18.
  • the central flange has a relatively shallow central groove 19.
  • the bumper beam thus has an open U-section with the opening directed towards the vehicle.
  • the central groove 19 gradually deepens from the central section outwards and the U-section is inverted at the two attachment portions 20, 21 of the bumper beam, i.e. the central groove 19 forms the central flange 22 and two webs 23, 24 of the inverted U-section, and the outer portions of the central flange 14 in Figure 4 form side flanges 32, 33 together with the original side flanges 17, 18, as will be seen most clearly from Figure 6.
  • the two crash boxes 12, 13 are identical, but of reversed design and only the crash box 12 and the attachment thereof are therefore described.
  • the crash box 12 has an upper surface 25, a lower surface 26 and two sides 27, 28, which are vertical.
  • the crash box thus has a closed profile and is shown with completely straight and vertical sides, although the sides do not have to be completely straight and vertical.
  • the two vertical sides 27, 28 of the crash box have recesses 30 at the ends of the crash box.
  • the recess is on the inside of the crash box and in the crash box 13, the recess is shown on the outside of the crash box.
  • Figures 5 and 6 show the crash box 12 and the bumper beam 11 before they are welded together and it will be clear that the recess 30 at the end of the side 27 of the crash box 12 is adapted to the cross section of the bumper beam.
  • a corresponding recess in the other side 28 of the crash box matches the bumper beam in the same manner.
  • the bumper beam 11 does not have exactly the same cross section with respect to the side 28 and the side 27 and the recesses 30 at the ends of both sides are not exactly the same.
  • the recesses 30 in both sides 27, 28 are to be welded to the bumper beam 11 along the contact lines.
  • the upper and lower surfaces 25, 26 of the crash box do not bear against the bumper beam as the recesses in the sides do not extend over the entire height of the sides.

Abstract

The bumper arrangement shown consists of a bumper beam (11) welded to two crash boxes (12, 13). The central part of the bumper beam has a U-section open towards the vehicle. Its central flange (14) has a central groove (19) gradually deepening towards the two attachment portions (20, 21) of the bumper beam so that the bumper beam has an inverted profile, i.e. it has a U-section open away from the vehicle. The crash boxes have a closed profile with an upper surface (25), a lower surface (26) and two vertical sides (27, 28) and have recesses (30) at the ends of the vertical sides adapted to the inverted U-section of the bumper beam and welded to the inverted U-section.

Description

Bumper arrangement for vehicles
Field of the invention
This invention relates to a bumper arrangement for vehicles including an open bumper beam in which the central part of the bumper beam between two attachment portions has a central flange and two webs forming a U-section open towards the vehicle, wherein the central flange has a central groove gradually deepening from the centre of the beam to the attachment portions at the ends of the bumper beam so that the beam has an inverted U-section open away from the vehicle, the central groove forming the central flange of the U-section and two webs, the height of which is greatest at the attachment portions, and the original central flange forming side flanges on either side of the U-section.
Prior art
A bumper beam of the aforementioned type is known from WO 2008/057025. It is designed to be fastened by means of a flat portion.
WO 2007/136320 describes the attachment of a bumper beam to two crash boxes in which the bumper beam is welded to recesses in the crash boxes.
Aim of the invention and brief description of the invention
The aim of the invention is to provide improved deformation properties over the entire width of the vehicle in the event of collisions of various types. This is achieved by means of two crash boxes having a closed profile with an upper surface, a lower surface and two vertical sides and having recesses at the ends of the vertical sides adapted to the inverted U-section of the bumper beam and welded to the inverted U-section at the attachment portions, wherein the inverted U-section continues beyond the attachment portions with the web height decreasing towards the ends.
The invention is defined by the claims. Brief description of the drawings
Figure 1 is a perspective view of a bumper arrangement according to this invention, the bumper beam being viewed from the outside towards the vehicle. Figure 2 shows the same arrangement viewed from the vehicle and outwards.
Figure 3 shows the same arrangement viewed directly from above.
Figure 4 is a section along the line 4-4 in Figure 3.
Figures 5 and 6 show a section along the line 5-5 in Figure 3, but with the elements separated.
Detailed description of illustrated embodiment of the invention
The figures show a bumper beam 11 attached to two crash boxes 12, 13. The crash boxes are designed to be attached to load-bearing parts of the vehicle. The crash boxes are usually attached to the ends of the side beams of the vehicle by means of bolts so that the bumper, i.e. the bumper beam and the crash boxes, can be mounted and removed as one unit.
As shown in Figure 4, the bumper beam is provided in its central section with a central flange 14 and two webs 15, 16. The webs end in side flanges 17, 18. The central flange has a relatively shallow central groove 19. The bumper beam thus has an open U-section with the opening directed towards the vehicle. The central groove 19 gradually deepens from the central section outwards and the U-section is inverted at the two attachment portions 20, 21 of the bumper beam, i.e. the central groove 19 forms the central flange 22 and two webs 23, 24 of the inverted U-section, and the outer portions of the central flange 14 in Figure 4 form side flanges 32, 33 together with the original side flanges 17, 18, as will be seen most clearly from Figure 6. Beyond the attachment portions, the depth of the central groove 19 gradually decreases again as shown, but the beam provides good crash protection even beyond the attachment portions. The central portion of the bumper beam is strong by virtue of the fact that it has both the central groove 19 and high webs 15, 16. As the central groove 19 deepens, the height of the webs 15, 16 simultaneously decreases.
The two crash boxes 12, 13 are identical, but of reversed design and only the crash box 12 and the attachment thereof are therefore described. The crash box 12 has an upper surface 25, a lower surface 26 and two sides 27, 28, which are vertical. The crash box thus has a closed profile and is shown with completely straight and vertical sides, although the sides do not have to be completely straight and vertical. The two vertical sides 27, 28 of the crash box have recesses 30 at the ends of the crash box. In the crash box 12 shown in Figure 2, the recess is on the inside of the crash box and in the crash box 13, the recess is shown on the outside of the crash box.
Figures 5 and 6 show the crash box 12 and the bumper beam 11 before they are welded together and it will be clear that the recess 30 at the end of the side 27 of the crash box 12 is adapted to the cross section of the bumper beam. A corresponding recess in the other side 28 of the crash box matches the bumper beam in the same manner. The bumper beam 11 does not have exactly the same cross section with respect to the side 28 and the side 27 and the recesses 30 at the ends of both sides are not exactly the same. The recesses 30 in both sides 27, 28 are to be welded to the bumper beam 11 along the contact lines. The upper and lower surfaces 25, 26 of the crash box do not bear against the bumper beam as the recesses in the sides do not extend over the entire height of the sides.
The attachment of the bumper beam to the crash boxes shown is extremely stiff against torsion and, overall, this design of the bumper beam and the attachment thereof result in very favourable deformation characteristics in the event of collisions of various types.

Claims

Claims
1. Bumper arrangement for vehicles including an open bumper beam (11 ) in which the central part of the bumper beam between two attachment portions has a central flange (14) and two webs (15, 16) forming a U-section open towards the vehicle, wherein the central flange has a central groove (19) gradually deepening from the centre of the beam to the attachment portions (20, 21) at the ends of the bumper beam so that the beam has an inverted U-section open away from the vehicle, the central groove forming the central flange (22) of the inverted U-section and two webs (23, 24), the height of which is greatest at the attachment portions, and the original central flange (14) forming side flanges on either side of the U-section,
characterised by
two crash boxes (12, 13) having a closed profile with an upper surface (25), a lower surface (26) and two vertical sides (27, 28) and having recesses at the ends of the vertical sides adapted to the inverted U-section of the bumper beam and welded to the U-section at the attachment portions, wherein the inverted U-section continues beyond the attachment portions with the web height decreasing towards the ends.
PCT/SE2011/000056 2010-03-29 2011-03-27 Bumper arrangement for vehicles WO2011123012A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1000298-9 2010-03-29
SE1000298-8 2010-03-29
SE1000298 2010-03-29

Publications (2)

Publication Number Publication Date
WO2011123012A1 true WO2011123012A1 (en) 2011-10-06
WO2011123012A8 WO2011123012A8 (en) 2017-01-12

Family

ID=44712468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2011/000056 WO2011123012A1 (en) 2010-03-29 2011-03-27 Bumper arrangement for vehicles

Country Status (1)

Country Link
WO (1) WO2011123012A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2461366A1 (en) * 2012-11-16 2014-05-19 Seat, S.A. Naughty bumper with asymmetric profile for a motor vehicle (Machine-translation by Google Translate, not legally binding)
CN110281868A (en) * 2018-03-19 2019-09-27 蔚来汽车有限公司 Anticollision beam assembly, body assembly and automobile
WO2020156934A1 (en) * 2019-01-29 2020-08-06 Kirchhoff Automotive Deutschland Gmbh Bumper crossmember
WO2021043896A1 (en) * 2019-09-06 2021-03-11 Kirchhoff Automotive Deutschland Gmbh Bumper crossbeam for a motor vehicle
CN108473101B (en) * 2015-12-21 2021-08-03 耶斯塔姆普硬技术股份公司 Bumper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007136320A1 (en) * 2006-05-19 2007-11-29 Gestamp Hardtech Ab Crash box for a vehicle
WO2008057025A1 (en) * 2006-11-09 2008-05-15 Gestamp Hardtech Ab Bumper beam
WO2008147276A1 (en) * 2007-05-30 2008-12-04 Gestamp Hardtech Ab A bumper beam
WO2009064235A1 (en) * 2007-11-12 2009-05-22 Gestamp Hardtech Ab A crash box and the attachment of a crash box to a side rail of a vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007136320A1 (en) * 2006-05-19 2007-11-29 Gestamp Hardtech Ab Crash box for a vehicle
WO2008057025A1 (en) * 2006-11-09 2008-05-15 Gestamp Hardtech Ab Bumper beam
WO2008147276A1 (en) * 2007-05-30 2008-12-04 Gestamp Hardtech Ab A bumper beam
WO2009064235A1 (en) * 2007-11-12 2009-05-22 Gestamp Hardtech Ab A crash box and the attachment of a crash box to a side rail of a vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2461366A1 (en) * 2012-11-16 2014-05-19 Seat, S.A. Naughty bumper with asymmetric profile for a motor vehicle (Machine-translation by Google Translate, not legally binding)
CN108473101B (en) * 2015-12-21 2021-08-03 耶斯塔姆普硬技术股份公司 Bumper
CN110281868A (en) * 2018-03-19 2019-09-27 蔚来汽车有限公司 Anticollision beam assembly, body assembly and automobile
WO2020156934A1 (en) * 2019-01-29 2020-08-06 Kirchhoff Automotive Deutschland Gmbh Bumper crossmember
US11912218B2 (en) 2019-01-29 2024-02-27 Kirchhoff Automotive Deutschland Gmbh Bumper cross car beam
WO2021043896A1 (en) * 2019-09-06 2021-03-11 Kirchhoff Automotive Deutschland Gmbh Bumper crossbeam for a motor vehicle
CN114364577A (en) * 2019-09-06 2022-04-15 奇昊汽车德国有限责任公司 Bumper cross-member for a motor vehicle
CN114364577B (en) * 2019-09-06 2024-02-23 奇昊汽车德国有限责任公司 Bumper beam for a motor vehicle

Also Published As

Publication number Publication date
WO2011123012A8 (en) 2017-01-12

Similar Documents

Publication Publication Date Title
EP2079611B1 (en) Bumper beam
KR101599421B1 (en) Bumper for a vehicle
KR100773626B1 (en) A bumper arrangement
EP3347245B1 (en) Bumper beam
US7938462B2 (en) Bumper beam
US9266484B2 (en) Crush box
US8439591B2 (en) Tube arrangement and crossbeam having such a tube arrangement
WO2011123012A1 (en) Bumper arrangement for vehicles
JP6334670B2 (en) Bumper beam with mounting plate
EP2345560B1 (en) Underrun prevention member for vehicle bumper beam
KR101631987B1 (en) Crash box for a vehicle
US20150102614A1 (en) Bumper crossbeam for a motor vehicle
JP6070656B2 (en) Shock absorption box for vehicles
WO2015133949A1 (en) Bumper beam with embossed cover
KR20180095078A (en) bumper
CN109963751A (en) With the center beam of bumper of rib on several walls of center beam of bumper
KR101508481B1 (en) Bumper beam for a vehicle
CN105793076B (en) Suspension link for motor vehicles
JP7018016B2 (en) Bumpa beam
KR101435418B1 (en) Bumper beam for vehicles
CN204775493U (en) Automobile body side wall planking assembly
JP7451933B2 (en) Vehicle undercarriage
KR101238677B1 (en) Bumper beam for vehicles
KR20100048413A (en) Bumper system
JP2014069231A (en) Sealing structure of pipe end part

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11763128

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11763128

Country of ref document: EP

Kind code of ref document: A1