EP3732081A2 - Boîte-tampon interne - Google Patents

Boîte-tampon interne

Info

Publication number
EP3732081A2
EP3732081A2 EP18920628.7A EP18920628A EP3732081A2 EP 3732081 A2 EP3732081 A2 EP 3732081A2 EP 18920628 A EP18920628 A EP 18920628A EP 3732081 A2 EP3732081 A2 EP 3732081A2
Authority
EP
European Patent Office
Prior art keywords
crash box
crash
internal
box
groove
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.)
Withdrawn
Application number
EP18920628.7A
Other languages
German (de)
English (en)
Other versions
EP3732081A4 (fr
Inventor
Ahmet Mert SOYER
Ibrahim OZBAY
Levent AKSEL
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.)
Tofas Turk Otomobil Fabrikasi AS
Original Assignee
Tofas Turk Otomobil Fabrikasi AS
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 Tofas Turk Otomobil Fabrikasi AS filed Critical Tofas Turk Otomobil Fabrikasi AS
Publication of EP3732081A2 publication Critical patent/EP3732081A2/fr
Publication of EP3732081A4 publication Critical patent/EP3732081A4/fr
Withdrawn legal-status Critical Current

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

  • the present invention relates to an internal crash box which enables the crash box to exhibit stable counter-force, prevents the fluctuation of the resistance and the inefficiency of the components during collision of vehicles.
  • the problem with the low-speed crash tests used in the prior art is that the metal crash boxes exhibit an unbalanced and fluctuated counter-force, and remain inefficient in energy damping. As a result of this, it is observed that the counter- forces exceed the limits and thus great damages occur on the vehicle body. As a result of this type of low- speed collision tests, since the damages occurring on the vehicle body increase the repair costs, it is aimed to minimize the damage in order to protect the client. In order to prevent this damage, the metal crash box must be able to create the counter-force at a certain level and in a stable manner during the collision. The crash boxes dampen the kinetic energy of the vehicle to a certain extent by means of undergoing plastic deformation.
  • crash box profiles are designed considering their damping characteristics, these profiles reduce the negative effects originating from the crash by folding like an accordion.
  • a certain part of the energy is absorbed on the impact absorbing crash boxes after the bumper which receives the first impact during crash. Absorption of energy is realized by the plastic deformation of the impact-absorbing crash boxes by folding like the accordion.
  • the bumper absorbs a certain amount of energy by means being deformed, and then the impact-absorbing crash boxes begin to deform, the reaction force coming in the axial direction reaches its highest value, and then the reaction forces begin to oscillate around an average value.
  • the structure shortens by being intertwined by means of local twists. Shock-absorption systems known in the state of the art cannot realize the energy absorption efficiently against the non-linear forces.
  • United States patent document no US8123263B2 an application known in the state of the art, discloses an energy absorbing system which is preferably placed on the front bumper of the vehicle and in form of a two level tube. The tubes enter into each other in order to absorb the energy that is created during collision, and thus energy absorption is realized.
  • United States patent document no US20100148526 an application known in the state of the art, discloses a crash box which is placed on the bumper. It is stated that there are dents on the surfaces of the said crash box which make the deformation easy.
  • the objective of the present invention is to provide an internal crash box which reduces the cost of damage by preventing the permanent damage on the vehicle body in the event of a low speed collision of the vehicles.
  • Another objective of the present invention to provide an internal crash box for providing a stable and balanced counter-force of the crash box during the collision of the vehicles and for realizing efficient energy damping.
  • Figure 1 is the detailed perspective view of the internal crash box.
  • Figure 2 is the perspective view of the first crash box and the second crash box.
  • Figure 3 is the lateral view of A-A section.
  • C. Crash Box An internal crash box (1), which reduces the effect of the collision on the life cabin and prevents the vehicle body from being permanently damaged in low speed accidents by absorbing the shock effect created by the vehicular accidents, essentially comprises
  • At least one crash box (C) which is placed on the vehicle chassis and at least one crash traverse (2) which is placed on the crash box (C),
  • At least one first crash box (3) which is placed on the crash traverse (2), at least one groove (31) which is in form of a channel made on the surfaces of the first crash box (3),
  • At least one second crash box (4) which is placed inside the first crash box (3).
  • a crash box (C) preferably located in the front part of the vehicle chassis and a crash traverse (2) is placed on the crash box (C).
  • a first crash box (3) which is preferably made of metal and has a rectangular shape with two opposite hollow ends is placed on the crash traverse (2).
  • a second collision box (4) which is preferably made of metal and has a rectangular shape with two opposite hollow ends is placed on the first crash box (3).
  • a first grove (31) is provided in the form of a channel opened on the surfaces of the first crash box (3).
  • a second groove in form of a channel is opened on the surface of the second crash box (4).
  • the second groove (41) covers the whole surface of the second crash box (41).
  • first crash box (3) and the second crash box (4) during the crash are enabled to perform energy damping by bending independently from each other, that is by being deformed.
  • the length of the second crash box (4) positioned within the first crash box (3) is shorter than the first crash box (3). Since the second crash box (4) is shorter than the first crash box (3), the first crash box (3) is ahead of the second crash box (4), so that the first contact occurs with the first crash box (3) during the collision. Then the second crash box (4) contacts the collision surface, and eliminates the loosening behavior seen in metals after deformation.
  • a cambered form (42) is arranged on the surface of the second crash box (4) so as to extend along the second crash box (4).
  • the cambered form (42) is positioned at the middle edge of the second crash box (4) and it is intended to increase the cross-section in order to allocate an area so that the towing hook can be used and to create a balanced counter-force by means of the cambered form (42).
  • an internal crash box (1) which prevents the metal crash box from creating a fluctuated and unstable counterforce, eliminates the loosening behavior seen after first deformation in metals and excessive increase in counter-force occurring due to ineffective energy absorption and thus prevent permanent damage on the vehicle body after low speed collision.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

L'invention concerne une boîte-tampon interne (1) qui réduit l'effet de la collision sur l'habitacle et empêche la carrosserie du véhicule d'être endommagée de façon permanente lors d'accidents à faible vitesse en absorbant l'effet de choc créé par une collision lors des accidents de circulation. Ladite boîte-tampon est caractérisé en ce qu'elle comprend : au moins une boîte-tampon (C) qui est placée sur le châssis du véhicule; au moins une traverse de collision (2) qui est placée sur la boîte-tampon (C); au moins une première boîte-tampon (3) qui est placée sur la traverse de collision (2); au moins une rainure (31) qui se présente sous la forme d'un canal ménagé sur les surfaces de la première boîte-tampon (3); et au moins une seconde boîte-tampon (4) qui est placée à l'intérieur de la première boîte-tampon (3).
EP18920628.7A 2017-12-29 2018-12-14 Boîte-tampon interne Withdrawn EP3732081A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2017/23030A TR201723030A2 (tr) 2017-12-29 2017-12-29 Bi̇r i̇ç çarpişma kutusu
PCT/TR2018/050810 WO2019231416A2 (fr) 2017-12-29 2018-12-14 Boîte-tampon interne

Publications (2)

Publication Number Publication Date
EP3732081A2 true EP3732081A2 (fr) 2020-11-04
EP3732081A4 EP3732081A4 (fr) 2021-04-21

Family

ID=67900538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18920628.7A Withdrawn EP3732081A4 (fr) 2017-12-29 2018-12-14 Boîte-tampon interne

Country Status (3)

Country Link
EP (1) EP3732081A4 (fr)
TR (1) TR201723030A2 (fr)
WO (1) WO2019231416A2 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262293C3 (de) * 1972-12-20 1980-12-04 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Stoßenergie absorbierendes Deformationselement für Kraftfahrzeuge, insbesondere Personenkraftwagen
DE10314905B4 (de) * 2003-04-01 2004-12-30 Benteler Automobiltechnik Gmbh Stoßfängersystem für engen Bauraum
AU2005282527A1 (en) * 2004-09-07 2006-03-16 Shape Corporation Plastic energy management beam
US7651155B2 (en) * 2006-11-03 2010-01-26 Gm Global Technology Operations, Inc. Progressive energy absorber
US7677617B2 (en) * 2008-07-24 2010-03-16 Gm Global Technology Operations, Inc. Efficient joint for vehicle energy-absorbing device
KR101316876B1 (ko) * 2012-07-03 2013-10-08 기아자동차주식회사 차량용 범퍼 어셈블리
US9199592B1 (en) * 2014-11-04 2015-12-01 Ford Global Technologies, Llc Crash box
DE112016000847T5 (de) * 2015-08-21 2017-11-09 Istanbul Teknik Universitesi Rektorlugu Verschachtelte Crashbox als passives Sicherheitsbauteil in Fahrzeugen

Also Published As

Publication number Publication date
EP3732081A4 (fr) 2021-04-21
WO2019231416A3 (fr) 2020-01-09
TR201723030A2 (tr) 2019-07-22
WO2019231416A2 (fr) 2019-12-05

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