WO2007035163A1 - A bumper beam mounting - Google Patents

A bumper beam mounting Download PDF

Info

Publication number
WO2007035163A1
WO2007035163A1 PCT/SE2006/001077 SE2006001077W WO2007035163A1 WO 2007035163 A1 WO2007035163 A1 WO 2007035163A1 SE 2006001077 W SE2006001077 W SE 2006001077W WO 2007035163 A1 WO2007035163 A1 WO 2007035163A1
Authority
WO
WIPO (PCT)
Prior art keywords
bumper beam
bolt
crash
hole
crash box
Prior art date
Application number
PCT/SE2006/001077
Other languages
French (fr)
Inventor
Lars Karlander
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36693804&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2007035163(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gestamp Hardtech Ab filed Critical Gestamp Hardtech Ab
Priority to DE602006019287T priority Critical patent/DE602006019287D1/en
Priority to AT06784194T priority patent/ATE493299T1/en
Priority to US11/991,864 priority patent/US7793997B2/en
Priority to EP06784194A priority patent/EP1928704B1/en
Priority to JP2008532194A priority patent/JP5371431B2/en
Publication of WO2007035163A1 publication Critical patent/WO2007035163A1/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

Definitions

  • This invention relates to a bumper beam mounting on a vehicle wherein the bumper beam is fastened in a pair of crash boxes.
  • the top part and bottom part of each crash box form fastening tabs against the top and bottom of the bumper beam and each tab is fastened to the bumper beam with more than one bolt, and a first hole fits a first bolt whereas the other hole/holes permit for the bumper beam to turn a limited amount around said first bolt.
  • Figure 1 is a view seen from above of one side of a bumper beam and its mounting with a crash box on a vehicle.
  • Figure 2 is a perspective view corresponding to figure 1 but it shows the bumper beam and the crash box when they are not mounted on the vehicle.
  • Figure 3 is a section taken along line 3-3 in Figure 1.
  • Figure 4 is a perspective view of the entire bumper beam of the preceding figures.
  • Figure 5 shows a detail of figure 4 seen vertically from above.
  • Figure 1 shows the left side of a front bumper beam 11 fastened in a crash box 12 that is carried by a supporting member of the vehicle, for example the side rail 13 of the vehicle.
  • the crash box has a form transversely that corresponds to the transverse form of the side rail and it is inserted in the side rail and welded to it.
  • the crash box can alternatively be fastened in other ways. It may for instance have an end plate that is fastened to an end plate on the side rail by bolts and nuts.
  • the bumper beam is usually symmetrical as shown in figure 4 and symmetrically mounted in two similar crash boxes.
  • the invention may also be applied on a rear bumper.
  • the bumper beam 11 is shown as an open hat beam (figure 3) with a central flange 14, two webs 15,16 and side flanges 17,18, and it has its central flange adjacent the vehicle and it opening facing outwards.
  • the bumper beam may have another transverse section, and it can for instance have a cover that makes it a closed beam.
  • the crash box 12 comprises a left member 20 and a right member 21 , which may suitably be formed of high-strength sheet steel, and these two members have their bottom parts 22,23 overlapping one another and welded together so that the underside (the bottom) of the crash box will be double-sheeted.
  • the upper side (the top) of the crash box consists of two sheets 24,25.
  • the crash box is shown having eight plane sides between its corners. It has vertical or substantially vertical sides 27,28 and inclined sides 29-32 between the vertical sides, and the top 24,25 and bottom 22,23 respectively.
  • the crash box tapers between its big end, adapted to the side rail of the vehicle, and its small end adapted to the bumper beam.
  • the upper side 24,25 of the crash box forms a tab 34 of double sheet that extends out over the upper side of the bumper beam, that is, out over the web 16, and the bottom side 22,23 of the crash box forms a tab 35 that extends out over the underside of the bumper beam, that is, out over the web 15.
  • These flaps 34,35 of double sheet are fastened to the respective web 16,15 by bolts 36,37 and nuts, and the crash box supports the bumper beam 11 in this way.
  • the two sides 27,29,30 and 28,31 ,32 of single sheet are adapted to abut the bumper beam.
  • the upper portions 24 and 25 of the left member and right member respectively need not be completely overlapping one another over their entire length but only near the beginning of the tab 34. The same goes for the corresponding bottom portions 22,23.
  • the top 24,25 of the crash box has transverse dents 40-42 and its bottom has corresponding dents 43-45.
  • the vertical side portions 27,28 have similar dents 46-48 and 49-51 respectively, and as seen along the crash box, these dents are positioned between the dents of the top and bottom.
  • Figure 4 shows the entire symmetrical bumper beam 11 and its two holes 52,53 for the bolts 36,37 that have been described with reference to the preceding figures. Holes 55,56 for the fastening of the other end of the bumper beam are also shown.
  • Figure 5 shows, at a larger scale, the bolt holes 55 and 56 and bolts 57,58 in the holes 55,56 at the right end of the bumper beam. The figure shows the bolts but, for clarity, the crash box and its upper tab is not shown.
  • the bolt 57 fits the circular hole 55 whereas the hole 56 is oblong in the longitudinal direction of the vehicle and the bolt 58 is in contact with the front wall of the hole.
  • the oblong hole 56 is positioned adjacent the outer end of the bumper beam relative to the hole 55.
  • the corresponding bolt holes in the upper tab 34 of the crash box are circular and fit the bolts 57,58.
  • the fastening of the bumper beam in the lower fastening tab is identical with the fastening in the upper one.
  • Both bolt holes 55,56 in the bumper beam can alternatively fit the bolts and the tab 34 can instead have one circular hole and one or more oblong holes.
  • the two crash boxes are comparatively long and in the event of an off-set crash against the left crash box 12, shown in figure 1 , this crash box is compressed and the bumper beam will turn about the bolt 55.
  • the oblong hole 56 will permit this turning around the bolt 55 without moving the bolt 58.Thus, in an off- set crash against one of the crash boxes, the other crash box will be intact and not bend if the crash is not a large one.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Clamps And Clips (AREA)
  • Dowels (AREA)

Abstract

A bumper beam (11) is fastened in two crash boxes (12). The top part and bottom part of each crash box form fastening tabs (34,35) against the top and bottom of the bumper beam (11) and each tab is fastened to the bumper beam with more than one bolt (36,37,57 58). A first hole (55) fits a first bolt (57) whereas the other hole/holes (56) permit for the bumper beam to turn a limited amount around said first bolt. Each tab is fastened to the bumper beam with more than one bolt and nut fastener (36,37,57,58). A first hole (55) fits a first bolt (57) whereas the other hole/holes (56) permit for the bumper beam to turn a limited amount around said first bolt. If a crash box is compressed in an off-set crash, the other crash box remains intact.

Description

A bumper beam mounting
Technichal field
This invention relates to a bumper beam mounting on a vehicle wherein the bumper beam is fastened in a pair of crash boxes.
Prior art
To fasten bumper beams in crash boxes is disclosed for example in US-6702346 B2, EP-0763448 A1 , DE-19537186 A1 , DE-4127381 A1 and US-3998485 Al The crash boxes take up energy in the event of a crash by being plastically deformed axially.
Object of invention and brief description of the invention
It is an object of the invention to provide a stable mounting of the bumper beam in the two crash boxes, which permits for the other crash box to remain intact when one of the crash boxes is deformed in an off-set crash. To this end, the top part and bottom part of each crash box form fastening tabs against the top and bottom of the bumper beam and each tab is fastened to the bumper beam with more than one bolt, and a first hole fits a first bolt whereas the other hole/holes permit for the bumper beam to turn a limited amount around said first bolt. The invention is defined by the claims.
Brief description of the drawings
Figure 1 is a view seen from above of one side of a bumper beam and its mounting with a crash box on a vehicle.
Figure 2 is a perspective view corresponding to figure 1 but it shows the bumper beam and the crash box when they are not mounted on the vehicle.
Figure 3 is a section taken along line 3-3 in Figure 1.
Figure 4 is a perspective view of the entire bumper beam of the preceding figures.
Figure 5 shows a detail of figure 4 seen vertically from above.
Description in detail of the shown and preferred example of the invention Figure 1 shows the left side of a front bumper beam 11 fastened in a crash box 12 that is carried by a supporting member of the vehicle, for example the side rail 13 of the vehicle. The crash box has a form transversely that corresponds to the transverse form of the side rail and it is inserted in the side rail and welded to it. The crash box can alternatively be fastened in other ways. It may for instance have an end plate that is fastened to an end plate on the side rail by bolts and nuts. The bumper beam is usually symmetrical as shown in figure 4 and symmetrically mounted in two similar crash boxes. The invention may also be applied on a rear bumper.
The bumper beam 11 is shown as an open hat beam (figure 3) with a central flange 14, two webs 15,16 and side flanges 17,18, and it has its central flange adjacent the vehicle and it opening facing outwards. The bumper beam may have another transverse section, and it can for instance have a cover that makes it a closed beam.
The crash box 12 comprises a left member 20 and a right member 21 , which may suitably be formed of high-strength sheet steel, and these two members have their bottom parts 22,23 overlapping one another and welded together so that the underside (the bottom) of the crash box will be double-sheeted. In the same way, the upper side (the top) of the crash box consists of two sheets 24,25. The crash box is shown having eight plane sides between its corners. It has vertical or substantially vertical sides 27,28 and inclined sides 29-32 between the vertical sides, and the top 24,25 and bottom 22,23 respectively. The crash box tapers between its big end, adapted to the side rail of the vehicle, and its small end adapted to the bumper beam.
The upper side 24,25 of the crash box forms a tab 34 of double sheet that extends out over the upper side of the bumper beam, that is, out over the web 16, and the bottom side 22,23 of the crash box forms a tab 35 that extends out over the underside of the bumper beam, that is, out over the web 15. These flaps 34,35 of double sheet are fastened to the respective web 16,15 by bolts 36,37 and nuts, and the crash box supports the bumper beam 11 in this way. The two sides 27,29,30 and 28,31 ,32 of single sheet are adapted to abut the bumper beam. The upper portions 24 and 25 of the left member and right member respectively need not be completely overlapping one another over their entire length but only near the beginning of the tab 34. The same goes for the corresponding bottom portions 22,23. The top 24,25 of the crash box has transverse dents 40-42 and its bottom has corresponding dents 43-45. The vertical side portions 27,28 have similar dents 46-48 and 49-51 respectively, and as seen along the crash box, these dents are positioned between the dents of the top and bottom. The dents 40-45 and 43-48 form triggers that initiate and control the deformation in the event of a crash. It is advantageous to the course of deformation that the crash box is octagonal with inclined surfaces that lack triggers, but the invention is not restricted to this form and the crash box may have another form and other types of triggers.
Figure 4 shows the entire symmetrical bumper beam 11 and its two holes 52,53 for the bolts 36,37 that have been described with reference to the preceding figures. Holes 55,56 for the fastening of the other end of the bumper beam are also shown. Figure 5 shows, at a larger scale, the bolt holes 55 and 56 and bolts 57,58 in the holes 55,56 at the right end of the bumper beam. The figure shows the bolts but, for clarity, the crash box and its upper tab is not shown. The bolt 57 fits the circular hole 55 whereas the hole 56 is oblong in the longitudinal direction of the vehicle and the bolt 58 is in contact with the front wall of the hole. The oblong hole 56 is positioned adjacent the outer end of the bumper beam relative to the hole 55. There may be more than one oblong hole. The corresponding bolt holes in the upper tab 34 of the crash box are circular and fit the bolts 57,58. The fastening of the bumper beam in the lower fastening tab is identical with the fastening in the upper one. Both bolt holes 55,56 in the bumper beam can alternatively fit the bolts and the tab 34 can instead have one circular hole and one or more oblong holes.
The two crash boxes are comparatively long and in the event of an off-set crash against the left crash box 12, shown in figure 1 , this crash box is compressed and the bumper beam will turn about the bolt 55.The oblong hole 56 will permit this turning around the bolt 55 without moving the bolt 58.Thus, in an off- set crash against one of the crash boxes, the other crash box will be intact and not bend if the crash is not a large one.

Claims

Claims
1. A bumper beam mounting on a vehicle wherein the bumper beam (11) is fastened in a pair of crash boxes (12), characterised in that the top part and bottom part of each crash box form fastening tabs (34,35) against the top and bottom of the bumper beam (11) and each tab is fastened to the bumper beam with more than one bolt (36,37,57 58), and a first hole (55) fits a first bolt (57) whereas the other hole/holes (56) permit for the bumper beam to turn a limited amount around said first bolt.
2. A bumper beam mounting according to claim 1 , characterised in that each crash box (12) comprises a left member (20) and a right member (21) jointed together, and these two members have their top parts (24,25) overlapping each other and their bottom parts (22,23) overlapping each other, thereby forming said tabs (34,35).
3. A bumper beam according to claim 1 or 2, characterised in that the crash, boxes (12) are octagonal in cross section and have triggers on every other side.
4. A bumper beam according to any one of the preceding claims, characterised in that said other hole/holes (56) are oblong in the longitudinal direction of the vehicle and positioned adjacent the outer end of the bumper beam as compared to the position of said first hole (55).
5. A bumper beam according to claim 4, characterised in that said oblong hole/holes (56) is positioned in the bumper beam.
PCT/SE2006/001077 2005-09-23 2006-09-22 A bumper beam mounting WO2007035163A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE602006019287T DE602006019287D1 (en) 2005-09-23 2006-09-22 FASTENING FOR BUMPER ROD
AT06784194T ATE493299T1 (en) 2005-09-23 2006-09-22 BUMPER ROD FASTENING
US11/991,864 US7793997B2 (en) 2005-09-23 2006-09-22 Bumper beam mounting
EP06784194A EP1928704B1 (en) 2005-09-23 2006-09-22 A bumper beam mounting
JP2008532194A JP5371431B2 (en) 2005-09-23 2006-09-22 Bumper beam mounting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0502105A SE0502105L (en) 2005-09-23 2005-09-23 A bumper beam attachment
SE0502105-0 2005-09-23

Publications (1)

Publication Number Publication Date
WO2007035163A1 true WO2007035163A1 (en) 2007-03-29

Family

ID=36693804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/001077 WO2007035163A1 (en) 2005-09-23 2006-09-22 A bumper beam mounting

Country Status (9)

Country Link
US (1) US7793997B2 (en)
EP (1) EP1928704B1 (en)
JP (1) JP5371431B2 (en)
KR (1) KR20080046217A (en)
AT (1) ATE493299T1 (en)
DE (1) DE602006019287D1 (en)
ES (1) ES2358875T3 (en)
SE (1) SE0502105L (en)
WO (1) WO2007035163A1 (en)

Cited By (8)

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EP1837246A1 (en) * 2006-03-21 2007-09-26 Benteler Automobiltechnik GmbH Bumper arrangement with crashbox
EP1837245A3 (en) * 2006-03-21 2008-06-25 Benteler Automobiltechnik GmbH Bumper assembly
WO2008153373A1 (en) * 2007-06-14 2008-12-18 Instituto Tecnológico De Estudios Superiores De Monterrey Fold-formed collapsible system for tubular bodies
JP2010527848A (en) * 2007-05-30 2010-08-19 イェスタムプ・ハードテック・アクチエボラーグ Bumper beam
EP2325058A3 (en) * 2009-11-20 2013-04-10 Benteler Automobiltechnik GmbH Bumper system
EP2981440B1 (en) 2013-04-05 2017-08-16 Constellium Singen GmbH Attachment means for mounting a bumper cross-beam onto a vehicle structure
EP3293943A1 (en) * 2016-09-07 2018-03-14 Thunder Power New Energy Vehicle Development Company Limited Longitudinal crash beam receiver
CN113879239A (en) * 2020-07-01 2022-01-04 马自达汽车株式会社 Front body structure of vehicle

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SE0601121L (en) * 2006-05-19 2007-07-17 Gestamp Hardtech Ab Car crash box
DE102007015865A1 (en) * 2007-04-02 2008-10-16 GM Global Technology Operations, Inc., Detroit Motor vehicle frame structure and crashbox for it
JP5040568B2 (en) * 2007-10-01 2012-10-03 マツダ株式会社 Auto body structure
JP5246139B2 (en) * 2009-02-26 2013-07-24 トヨタ自動車株式会社 Vehicle front structure
DE102011112256A1 (en) * 2011-09-02 2013-03-07 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Motor vehicle with crash box
JP5852403B2 (en) * 2011-10-21 2016-02-03 アイシン精機株式会社 Bumper device for vehicle and crash box applied to the bumper device for vehicle
JP5837446B2 (en) 2012-03-14 2015-12-24 アイシン精機株式会社 Crash box and bumper device
KR101427921B1 (en) * 2012-09-03 2014-08-11 현대자동차 주식회사 Impact absorbing device for vehicle
JP5637203B2 (en) * 2012-12-04 2014-12-10 トヨタ自動車株式会社 Body front structure
JP5988893B2 (en) * 2013-02-25 2016-09-07 豊田鉄工株式会社 Shock absorbing member for vehicle
JP5924308B2 (en) * 2013-06-03 2016-05-25 トヨタ自動車株式会社 Body front structure
JP6020497B2 (en) * 2014-03-24 2016-11-02 トヨタ自動車株式会社 Vehicle energy absorption structure and energy absorption member
KR101664848B1 (en) * 2014-10-28 2016-10-12 한화첨단소재 주식회사 Hybrid crash box assembly satisfied vehicle impact characteristics
US9643651B2 (en) 2015-08-28 2017-05-09 Honda Motor Co., Ltd. Casting, hollow interconnecting member for connecting vehicular frame members, and vehicular frame assembly including hollow interconnecting member
JP6215891B2 (en) * 2015-10-15 2017-10-18 本田技研工業株式会社 Body structure with shock absorbing member
IT201700111991A1 (en) * 2017-10-05 2019-04-05 Srt S R L Metal shock absorbing element for a motor vehicle and its production method
US11283395B2 (en) 2018-03-23 2022-03-22 Nextracker Inc. Multiple actuator system for solar tracker
US11387771B2 (en) 2018-06-07 2022-07-12 Nextracker Llc Helical actuator system for solar tracker
JP7035908B2 (en) * 2018-08-29 2022-03-15 トヨタ自動車株式会社 Vehicle front structure
CN109018002A (en) * 2018-09-30 2018-12-18 安徽安凯汽车股份有限公司 A kind of bus frame structure
US11104283B2 (en) * 2018-11-16 2021-08-31 Aisin Seiki Kabushiki Kaisha Vehicular energy absorbing member and manufacturing method thereof
US11050383B2 (en) 2019-05-21 2021-06-29 Nextracker Inc Radial cam helix with 0 degree stow for solar tracker
US11034316B2 (en) * 2019-08-23 2021-06-15 Volvo Car Corporation Mounting arrangement for coupling a bumper beam to a crash box and side rail of a vehicle
US11097678B2 (en) 2019-08-23 2021-08-24 Volvo Car Corporation Automotive side rail crush can fastening assembly
CN112606784A (en) * 2021-01-07 2021-04-06 宁波可挺汽车零部件有限公司 Collision beam assembly

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837246A1 (en) * 2006-03-21 2007-09-26 Benteler Automobiltechnik GmbH Bumper arrangement with crashbox
EP1837245A3 (en) * 2006-03-21 2008-06-25 Benteler Automobiltechnik GmbH Bumper assembly
DE102006013273B4 (en) * 2006-03-21 2013-09-05 Benteler Automobiltechnik Gmbh bumper assembly
JP2010527848A (en) * 2007-05-30 2010-08-19 イェスタムプ・ハードテック・アクチエボラーグ Bumper beam
WO2008153373A1 (en) * 2007-06-14 2008-12-18 Instituto Tecnológico De Estudios Superiores De Monterrey Fold-formed collapsible system for tubular bodies
EP2325058A3 (en) * 2009-11-20 2013-04-10 Benteler Automobiltechnik GmbH Bumper system
EP2981440B1 (en) 2013-04-05 2017-08-16 Constellium Singen GmbH Attachment means for mounting a bumper cross-beam onto a vehicle structure
EP3293943A1 (en) * 2016-09-07 2018-03-14 Thunder Power New Energy Vehicle Development Company Limited Longitudinal crash beam receiver
US10071771B2 (en) 2016-09-07 2018-09-11 Thunder Power New Energy Vehicle Development Company Limited Longitudinal crash beam receiver
CN113879239A (en) * 2020-07-01 2022-01-04 马自达汽车株式会社 Front body structure of vehicle
EP3932749A1 (en) * 2020-07-01 2022-01-05 Mazda Motor Corporation Vehicle front body structure and vehicle
CN113879239B (en) * 2020-07-01 2024-01-02 马自达汽车株式会社 Front body structure of vehicle

Also Published As

Publication number Publication date
EP1928704A4 (en) 2010-03-17
KR20080046217A (en) 2008-05-26
JP2009508760A (en) 2009-03-05
US20090261602A1 (en) 2009-10-22
EP1928704B1 (en) 2010-12-29
ES2358875T3 (en) 2011-05-16
JP5371431B2 (en) 2013-12-18
US7793997B2 (en) 2010-09-14
EP1928704A1 (en) 2008-06-11
ATE493299T1 (en) 2011-01-15
SE527962C2 (en) 2006-07-25
SE0502105L (en) 2006-07-25
DE602006019287D1 (en) 2011-02-10

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