EP3732081A2 - An internal crash box - Google Patents
An internal crash boxInfo
- 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- Withdrawn
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2017/23030A TR201723030A2 (en) | 2017-12-29 | 2017-12-29 | AN INTERNAL COLLISION BOX |
PCT/TR2018/050810 WO2019231416A2 (en) | 2017-12-29 | 2018-12-14 | An internal crash box |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3732081A2 true EP3732081A2 (en) | 2020-11-04 |
EP3732081A4 EP3732081A4 (en) | 2021-04-21 |
Family
ID=67900538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18920628.7A Withdrawn EP3732081A4 (en) | 2017-12-29 | 2018-12-14 | An internal crash box |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3732081A4 (en) |
TR (1) | TR201723030A2 (en) |
WO (1) | WO2019231416A2 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2262293C3 (en) * | 1972-12-20 | 1980-12-04 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Impact energy absorbing deformation element for motor vehicles, in particular passenger cars |
DE10314905B4 (en) * | 2003-04-01 | 2004-12-30 | Benteler Automobiltechnik Gmbh | Bumper system for tight spaces |
JP4966857B2 (en) * | 2004-09-07 | 2012-07-04 | シェイプ・コープ | Energy management cylinder, method of manufacturing the same, and energy management mat |
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 (en) * | 2012-07-03 | 2013-10-08 | 기아자동차주식회사 | Bumper assembly for vehicle |
US9199592B1 (en) * | 2014-11-04 | 2015-12-01 | Ford Global Technologies, Llc | Crash box |
DE112016000847T5 (en) * | 2015-08-21 | 2017-11-09 | Istanbul Teknik Universitesi Rektorlugu | Nested Crashbox as a passive safety component in vehicles |
-
2017
- 2017-12-29 TR TR2017/23030A patent/TR201723030A2/en unknown
-
2018
- 2018-12-14 EP EP18920628.7A patent/EP3732081A4/en not_active Withdrawn
- 2018-12-14 WO PCT/TR2018/050810 patent/WO2019231416A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019231416A3 (en) | 2020-01-09 |
WO2019231416A2 (en) | 2019-12-05 |
EP3732081A4 (en) | 2021-04-21 |
TR201723030A2 (en) | 2019-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200602 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20210324 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B60R 19/34 20060101AFI20210318BHEP Ipc: F16F 7/12 20060101ALI20210318BHEP Ipc: B60D 1/56 20060101ALI20210318BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20211014 |