US20140054907A1 - Bumper beam assembly system - Google Patents

Bumper beam assembly system Download PDF

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Publication number
US20140054907A1
US20140054907A1 US13/975,661 US201313975661A US2014054907A1 US 20140054907 A1 US20140054907 A1 US 20140054907A1 US 201313975661 A US201313975661 A US 201313975661A US 2014054907 A1 US2014054907 A1 US 2014054907A1
Authority
US
United States
Prior art keywords
bumper beam
wall
stay
assembly system
beam assembly
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US13/975,661
Other languages
English (en)
Inventor
Choul Won So
Jong Wook Lee
Jun Youp KIM
Kyo Min LEE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lotte Chemical Corp
Original Assignee
Lotte Chemical Corp
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
Priority claimed from KR1020120093512A external-priority patent/KR101375497B1/ko
Priority claimed from KR1020120093513A external-priority patent/KR101440679B1/ko
Application filed by Lotte Chemical Corp filed Critical Lotte Chemical Corp
Assigned to LOTTE CHEMICAL CORPORATION reassignment LOTTE CHEMICAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, JUN YOUP, LEE, JONG WOOK, LEE, KYO MIN, SO, Choul Won
Publication of US20140054907A1 publication Critical patent/US20140054907A1/en
Priority to US14/555,992 priority Critical patent/US9211857B2/en
Abandoned legal-status Critical Current

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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
    • B60R19/03—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
    • B60R19/24—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
    • B60R19/18—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
    • 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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material

Definitions

  • the present invention relates to a bumper beam assembly system for a vehicle, and more particularly, to a bumper beam assembly system which is capable of minimizing repair costs of a corner part when the corner portion is crashed at a low speed.
  • a bumper beam assembly represents a functional part protecting a frame when a vehicle is crashed at a low speed and is usually provided with a bumper beam and a stay.
  • the bumper beam may absorb most of crash energy, and the stay may absorb the rest of the crash energy. That is, the bumper beam that is directly crashed may firstly absorb the crash energy, and the stay through which the bumper beam is connected to the frame to support the bumper beam may secondly absorb the crash energy.
  • Required performance of the bumper beam assembly constituted as described above may be tested through two tests such as a low speed crash regulation test and a repair cost evaluation crash test which is performed by General Insurance Association (Insurance Institute for Highway Safety (IIHS) and Research Council for Automobile Repairs (RCAR)).
  • IIHS Insurance Institute for Highway Safety
  • RCR Research Council for Automobile Repairs
  • the low speed crash test performed by General Insurance Association may evaluate the repair costs after a low speed crash to utilize a standard for appropriating a premium, and thus the low speed crash test has a large effect on vehicle sales.
  • the repair cost evaluation commercial value evaluation
  • IIHS may offset a central portion of a vehicle bumper and about 15% of an overall width of the vehicle by using a bumper dummy to perform a low speed crash test at about 10 KPH and about 5 KPH, as shown in FIG. 1 , thereby appropriating the repair costs and announcing to mass communication.
  • a result of the low speed crash test performed by IIHS is exemplified in FIG. 2 .
  • a bumper beam having excellent performance may have repair costs required when the bumper beam assembly and the bumper cover assembly are replaced without being damaged in itself after the test is performed by IIHS.
  • a bumper beam formed of a low-weight, high-performance plastic composite material is widely applied so as to improve fuel efficiency. Since the plastic composite material is lighter than steel, the plastic composite material may be effective in aspects of vehicle fuel efficiency. However, since the plastic composite material is relatively expensive when compared to that of the steel, the repair cost evaluation performed by General Insurance Association may cause poor results due to the high replacement costs. Also, the bumper beam formed of the plastic composite material may have high strength through compression-molding. However, the bumper beam may be weak in strength at both ends thereof due to the compression-molding. As a result, the damaged beam and deformed stay should be replaced in the 15% offset test performed by IIHS (hereinafter, referred to as an “IIHS 15% offset test”).
  • IIHS 15% offset test
  • bumper assemblies having various shapes are disclosed in Korean Patent Application Nos. 10-2008-0069637, 10-2009-0081580, 10-2007-0002937, 10-2009-0093518, 10-2008-0059204 and 10-2011-0122098.
  • FIG. 3 simple and usual steel beams or plastic composite material beams are provided.
  • the bumper beam since an extruded crash box for a vehicle is disposed behind the bumper beam, the bumper beam may be firstly crashed and damaged, and then the stay or crash box may be deformed or damaged in the IIHS 15% offset test. Therefore, costs for replacing the whole bumper beam assembly may be required.
  • the present invention provides a bumper beam assembly system in which repair costs for replacing components damaged when the vehicle is crashed at a low speed are reduced to satisfy an IIHS 15% offset test.
  • the present invention also provides the bumper beam assembly which overcomes a limitation in a shape of a stay and improves vehicle fuel efficiency through weight lighting thereof.
  • a bumper beam assembly system includes: a bumper beam; and a stay connecting the bumper beam to a vehicle, wherein the stay is replaceably coupled to both sides of the bumper beam to occupy a corner portion of the bumper beam.
  • the stay may include a bucket structure or a partition wall structure.
  • the bucket structure may include: a frame assembly part that is coupled to a frame; a first sidewall disposed on one side of the frame assembly part to constitute the corner portion of the bumper beam; a second sidewall disposed on the other side of the frame; and a bumper beam assembly part extending from the frame assembly part, the first sidewall, and the second sidewall in a flange shape and coupled to the bumper beam.
  • the partition wall structure may include: a first outer wall couples to a rare end of the bumper beam; a second outer wall disposed on one side of the first outer wall to constitute the corner portion of the bumper beam; a third outer wall disposed on the other side of the first outer wall; a fourth outer wall connecting the second outer wall to the third outer wall, the fourth outer wall being couple to the frame; and at least one partition wall vertically connecting the first outer wall to the fourth outer wall.
  • the stay may be formed of steel or a thermoplastic or thermosetting composite material.
  • the composite material may include a synthetic resin and a glass fiber and is press-molded.
  • the stay may be separably mounted on both side ends of the bumper beam so that only the damaged stay is replaced when the corner portion of the bumper beam is crashed to significantly reduce the repair costs.
  • the stay is very superior in applicability.
  • the plastic composite material may be used to freely realize the desired shapes as well as to improve the vehicle fuel efficiency through the weight lighting of the stay.
  • FIG. 1 is a view illustrating a process of an IIHS low speed crash test
  • FIG. 2 is a view exemplifying a result of an IIHS low speed crash test
  • FIG. 3 is a view of a steel bumper beam assembly and a plastic composite material bumper beam assembly according to a related art
  • FIG. 4 is an exploded perspective view of a bumper beam assembly system according to an embodiment of the present invention.
  • FIG. 5 is a front view of the bumper beam assembly system according to an embodiment of the present invention.
  • FIG. 6 is a plan view of the bumper beam assembly system according to an embodiment of the present invention.
  • FIG. 7 is a view illustrating a stay of the bumper beam assembly system according to an embodiment of the present invention.
  • FIG. 8 is a plan view of a bumper beam assembly system according to another embodiment of the present invention.
  • FIG. 9 is a front view of the bumper beam assembly system according to another embodiment of the present invention.
  • FIG. 10 is a plan view of the bumper beam assembly system according to another embodiment of the present invention.
  • FIG. 11 is a view illustrating a stay of the bumper beam assembly system according to another embodiment of the present invention.
  • FIG. 4 is an exploded perspective view of a bumper beam assembly system according to an embodiment of the present invention
  • FIG. 5 is a front view of the bumper beam assembly system according to an embodiment of the present invention
  • FIG. 6 is a plan view of the bumper beam assembly system according to an embodiment of the present invention.
  • a bumper beam assembly system 100 may include a bumper beam 110 and a stay 120 .
  • the current embodiment is characterized in that the bumper beam 110 is shortened in length, and then the stay 120 is applied on the shortened portion of the bumper beam 110 .
  • the stay 120 is applied on the shortened portion of the bumper beam 110 .
  • the bumper beam 110 is configured to absorb an impact generated when a vehicle is frontally crashed.
  • the bumper beam 110 is connected to a frame by the stay 120 .
  • the bumper beam may be compression-molded by using a plastic composite material.
  • the bumper beam 110 may have a length (L) shorter than that of the bumper beam according to the related art as described above. In detail, as shown in FIG. 6 , the length (L) of the bumper beam may be determined in consideration of a crash position and gap (G) so that the bumper beam 110 may do not overlap a barrier 300 in an IIHS corner bumper dummy test.
  • the stay 120 is configured to absorb an impact generated when a corner portion of the vehicle is crashed.
  • the stay 120 is coupled to the bumper beam 110 by using a coupling unit 130 .
  • the present invention is characterized in that the stay 120 occupies both ends of the bumper beam 110 . That is, the stay 120 may be disposed on the portion of the bumper beam 110 of which the length is reduced. Thus, only the stay 120 damaged when the corner portion is crashed at a low speed may be replaced to significantly reduce repair costs.
  • a structure of the stay 120 will be described below in more detail with reference to the accompanying drawings.
  • FIG. 7 is a view illustrating the stay of the bumper beam assembly system according to an embodiment of the present invention.
  • the stay 120 includes a frame assembly part 121 having an approximately ‘ ’ shape in sectional structure and coupled to the frame, a first sidewall 122 disposed on one side of the frame assembly part 121 to constitute a corner portion of the bumper beam 110 , a second sidewall 123 disposed on the other side of the frame assembly part 121 , and a bumper beam assembly part 124 extending from each of the frame assembly part 121 , the first sidewall 122 , and the second sidewall 123 in a flange shape and coupled to the bumper beam 110 .
  • the stay 120 may be provided in a bucket shape of which one side is opened to define an empty space therein.
  • the bumper beam 110 may be inserted to the empty space to butt-couple the bumper beam 110 to the frame in a state where the stay 120 is coupled to the bumper beam 110 .
  • the first sidewall 122 may have a predetermined angle ⁇ 1 with respect to the frame assembly part 121 in consideration of an overlapping amount (about 15% of an overall width of the vehicle) in the IIHS corner bumper dummy test.
  • the second sidewall 123 may have a predetermined angle ⁇ 2 with respect to the frame assembly part 121 in consideration of the IIHS corner bumper dummy test.
  • the stay 120 may be molded through press-drawing by using a steel material or may be press-compression molded by using a plastic composite material.
  • a plastic composite material since each of most vehicles being released at the present have a great package space, it may be difficult to mold the stay 120 by using a steel material for which deep-drawing is required.
  • an easily moldable plastic composite material may be used.
  • a limitation in shape realization may be overcome, and also, fuel efficiency may be improved through weight lighting of the stay 120 .
  • a thermoplastic composite material and a thermosetting composite material which contain a synthetic resin and a glass fiber, may be used as the plastic composite material.
  • FIG. 8 is a plan view of a bumper beam assembly system according to another embodiment of the present invention
  • FIG. 9 is a front view of the bumper beam assembly system according to another embodiment of the present invention
  • FIG. 10 is a plan view of the bumper beam assembly system according to another embodiment of the present invention.
  • a bumper beam assembly system 200 may include a bumper beam 210 and a stay 220 , like the foregoing embodiment.
  • the stay 220 may have a structure different from that of the foregoing embodiment.
  • stay 220 will be described below in detail with reference to the accompanying drawings.
  • FIG. 11 is a view illustrating the stay of the bumper beam assembly system according to another embodiment of the present invention.
  • the stay 220 may include a partition wall structure including a plurality of outer walls 221 , 222 , 223 , and 224 and partition walls 225 and 226 .
  • the outer walls 221 , 222 , 223 , and 224 may include a first outer wall 221 coupled to a rear end of the bumper beam 210 , a second outer wall 222 disposed on one side of the first outer wall 221 to constitute a corner portion of the bumper beam 210 , a third outer wall 223 disposed on the other side of the first outer wall 221 , and a fourth outer wall 224 connecting the second outer wall 222 to the third outer wall 223 and couple to the frame.
  • the outer walls 221 , 222 , 223 , and 224 may define a space therein.
  • the partition walls 225 and 226 may be vertically disposed at a uniform distance between the first outer wall 221 and the fourth outer wall 224 to provide a supporting force.
  • the second outer wall 222 may be bent at a predetermined angle ⁇ 3 with respect to the fourth outer wall 224 in consideration of an overlapping amount (about 15% of an overall width of the vehicle) in an IIHS corner bumper dummy test.
  • the third outer wall 223 may be bent at a predetermined angle ⁇ 4 with respect to the fourth outer wall 224 in consideration of the IIHS corner bumper dummy test.
  • the stay 220 may be injection or extrusion-molded by using a thermoplastic or a thermosetting plastic to improve vehicle fuel-efficiency through weight lighting thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)
US13/975,661 2012-08-27 2013-08-26 Bumper beam assembly system Abandoned US20140054907A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/555,992 US9211857B2 (en) 2012-08-27 2014-11-28 Bumper beam assembly system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020120093512A KR101375497B1 (ko) 2012-08-27 2012-08-27 범퍼 빔 앗세이 시스템
KR1020120093513A KR101440679B1 (ko) 2012-08-27 2012-08-27 범퍼 빔 앗세이 시스템
KR10-2012-0093513 2012-08-27
KR10-2012-0093512 2012-08-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/555,992 Division US9211857B2 (en) 2012-08-27 2014-11-28 Bumper beam assembly system

Publications (1)

Publication Number Publication Date
US20140054907A1 true US20140054907A1 (en) 2014-02-27

Family

ID=49033973

Family Applications (2)

Application Number Title Priority Date Filing Date
US13/975,661 Abandoned US20140054907A1 (en) 2012-08-27 2013-08-26 Bumper beam assembly system
US14/555,992 Active US9211857B2 (en) 2012-08-27 2014-11-28 Bumper beam assembly system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US14/555,992 Active US9211857B2 (en) 2012-08-27 2014-11-28 Bumper beam assembly system

Country Status (4)

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US (2) US20140054907A1 (de)
EP (1) EP2703230B1 (de)
JP (1) JP5636076B2 (de)
CN (1) CN103625399B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9539965B2 (en) 2015-04-17 2017-01-10 Toyota Motor Engineering & Manufacturing North America, Inc. Bumper moment inducer
US20190299879A1 (en) * 2018-03-27 2019-10-03 Honda Motor Co., Ltd. Vehicle body rear structure
USD985441S1 (en) * 2021-03-29 2023-05-09 Hyundai Motor Company Rear bumper lower cover for vehicles

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Publication number Priority date Publication date Assignee Title
JP6020497B2 (ja) * 2014-03-24 2016-11-02 トヨタ自動車株式会社 車両のエネルギ吸収構造及びエネルギ吸収部材
DE102014011790A1 (de) * 2014-08-12 2016-02-18 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Stoßfängermodul
KR101629100B1 (ko) 2014-11-26 2016-06-09 롯데케미칼 주식회사 자동차용 범퍼 시스템
RU168680U1 (ru) * 2016-07-22 2017-02-15 Общество с ограниченной ответственностью "Нанотехнологический центр композитов" (ООО "НЦК") Композитный бампер наземного транспортного средства

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9539965B2 (en) 2015-04-17 2017-01-10 Toyota Motor Engineering & Manufacturing North America, Inc. Bumper moment inducer
US20190299879A1 (en) * 2018-03-27 2019-10-03 Honda Motor Co., Ltd. Vehicle body rear structure
US10889252B2 (en) * 2018-03-27 2021-01-12 Honda Motor Co., Ltd. Vehicle body rear structure
USD985441S1 (en) * 2021-03-29 2023-05-09 Hyundai Motor Company Rear bumper lower cover for vehicles

Also Published As

Publication number Publication date
JP5636076B2 (ja) 2014-12-03
US20150137539A1 (en) 2015-05-21
JP2014043240A (ja) 2014-03-13
US9211857B2 (en) 2015-12-15
CN103625399B (zh) 2016-01-27
EP2703230B1 (de) 2015-09-09
CN103625399A (zh) 2014-03-12
EP2703230A1 (de) 2014-03-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LOTTE CHEMICAL CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SO, CHOUL WON;LEE, JONG WOOK;KIM, JUN YOUP;AND OTHERS;REEL/FRAME:031081/0682

Effective date: 20130821

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION