EP0904226A1 - Method for producing an automobile impact-absorbing component - Google Patents
Method for producing an automobile impact-absorbing componentInfo
- Publication number
- EP0904226A1 EP0904226A1 EP98931912A EP98931912A EP0904226A1 EP 0904226 A1 EP0904226 A1 EP 0904226A1 EP 98931912 A EP98931912 A EP 98931912A EP 98931912 A EP98931912 A EP 98931912A EP 0904226 A1 EP0904226 A1 EP 0904226A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impact
- absorbing
- motor vehicle
- absorbing element
- producing
- 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- Withdrawn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
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/04—Making metal objects by operations essentially involving machining but not covered by a single other subclass involving slicing of profiled material
-
- 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
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
Definitions
- the invention relates to a component for motor vehicles for converting impact energy.
- DE 43 00 284 AI counts a motor vehicle component for converting the impact energy transmitted to a motor vehicle in the event of an impact into the prior art.
- a shock energy damper is incorporated as a safety element between the bumper and the frame of a motor vehicle.
- the shock energy damper consists essentially of two concentrically interconnected tubes. The two pipes are designed so that they collide in the event of an impact and the impact energy is converted by deformation of the pipes.
- shock absorbers are considered disadvantageous.
- automotive components such as chassis and body parts
- the invention is therefore based on the object of rationalizing the production of shock-absorbing components for motor vehicles in terms of production technology and of making it more economical overall.
- a starting material heated to the forming temperature is first formed into a profile strand and this is then divided into impact elements as required.
- AlMgSi alloy is considered to be particularly advantageous. This allows a high pressing speed and the realization of complicated profiles, especially hollow profiles with small wall thicknesses. It also has very good corrosion resistance.
- Aluminum-lithium alloys also contribute to the desired weight reduction due to their low density. With aluminum-lithium alloys, which have a Li content of around 2.5%, a density reduction of almost 10% is achieved. At the same time, the modulus of elasticity increases by around 10%, which enables a further weight reduction of the component.
- the method according to the invention enables a rational and economical production of impact elements for motor vehicles which have a high degree of convertibility for impact energy.
- the impact elements have a simple structure, and their technical cut can be adapted to the particular circumstances and requirements of a motor vehicle.
- connection openings for fixing the impact elements in the motor vehicle after they have been manufactured.
- the connection openings are particularly expediently produced when pressing the profile strand, as provided in claim 2. This further rationalizes manufacturing.
- the extruded profile with cavities and inner struts is pressed.
- the weight of the motor vehicle components can be significantly reduced and the energy absorption or conversion capacity can be increased.
- the rigidity of the motor vehicle component can be adjusted according to requirements.
- the method according to the invention allows the production of impact elements in only two main work steps. Overall, the motor vehicle components are efficient and therefore inexpensive to manufacture.
- the weight saving compared to motor vehicle components made of steel pipes enables a further reduction in the total weight of a motor vehicle. This makes a contribution to reducing fuel consumption and pollutant emissions.
- the shape and design of the impact elements can be matched to the respective specific requirements of a motor vehicle type, for example with regard to energy absorption capacity, geometry requirements and static load capacity, in a simple manner.
- the force or shock absorption capacity can be determined by internal struts, a honeycomb structure or a change in wall thickness or geometry.
- FIGS. 1 and 2 The invention is described in more detail below with reference to two embodiments of an impact element shown in FIGS. 1 and 2.
- FIGS. 1 and 2 show two embodiments of a component 1 and 2 for converting impact energy in motor vehicles in the form of impact elements 3 and 4, which are divided from a pressed profile strand.
- a starting material is first heated to the forming temperature and pressed into a profile strand.
- the longitudinal extension of a profile strand is indicated by the arrow L in component 1.
- the profile strand is divided into impact elements with the appropriate dimensions, as required.
- Connection openings 5, 6 for fixing the impact elements 3, 4 in the motor vehicle have been produced when pressing the profile strand.
- the impact elements 3, 4 have cavities 7-10 and inner struts 11-14. As a result, the weight of the impact elements 3, 4 is reduced and the energy absorption capacity is increased.
- the struts 11-14 ensure sufficient vehicle-specific rigidity.
- the impact elements 3, 4 according to the invention can be produced efficiently in only two main work steps. This results in great time and cost savings. With the method according to the invention, impact elements of the most varied configuration with high energy absorption capacity can be produced, and in fact with less weight than known motor vehicle components.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Vibration Dampers (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19715308A DE19715308C2 (en) | 1997-04-11 | 1997-04-11 | Method for producing a shock-absorbing impact carrier element for converting impact energy in motor vehicles |
DE19715308 | 1997-04-11 | ||
PCT/DE1998/001048 WO1998046470A2 (en) | 1997-04-11 | 1998-04-14 | Method for producing an automobile impact-absorbing component |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0904226A1 true EP0904226A1 (en) | 1999-03-31 |
Family
ID=7826333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98931912A Withdrawn EP0904226A1 (en) | 1997-04-11 | 1998-04-14 | Method for producing an automobile impact-absorbing component |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0904226A1 (en) |
CZ (1) | CZ409698A3 (en) |
DE (1) | DE19715308C2 (en) |
WO (1) | WO1998046470A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19915237A1 (en) * | 1999-04-03 | 2000-10-05 | Volkswagen Ag | Deformation element, useful as a crash or impact absorber element, consists of a ductile, energy absorbent lithium or preferably magnesium alloy |
DE19943207A1 (en) * | 1999-09-09 | 2001-04-19 | Benteler Werke Ag | Impact absorbers for motor vehicles |
NO20003555L (en) * | 2000-07-10 | 2002-01-11 | Norsk Hydro As | Process for the preparation of structural elements and the resulting elements |
DE102004011659A1 (en) * | 2003-04-05 | 2004-11-11 | Daimlerchrysler Ag | Variable drive for camshaft |
ITVR20040115A1 (en) * | 2004-07-14 | 2004-10-14 | Gianfranco Natali | METHOD OF OPTIMIZATION OF AN EXTRUSION PROCEDURE OF AN ALUMINUM PROFILE |
WO2007033634A1 (en) | 2005-09-23 | 2007-03-29 | Neumayer Tekfor Holding Gmbh | Variable drive for camshafts |
DE102009020094A1 (en) * | 2009-05-06 | 2010-11-11 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing levers for valve actuation in a valve train of a motor vehicle internal combustion engine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4030179A (en) * | 1976-01-19 | 1977-06-21 | Dunham-Bush, Inc. | Method of manufacturing low cost non-porous metal connecting rods |
DE3821275A1 (en) * | 1988-06-24 | 1989-12-28 | Maier Peter | METHOD FOR PRODUCING PARTICULARLY WEIGHT-REDUCED REINFORCEMENT PROFILES |
JP2973050B2 (en) * | 1991-12-11 | 1999-11-08 | 本田技研工業株式会社 | Automotive suspension arm |
DE4202483A1 (en) * | 1992-01-29 | 1993-08-05 | Bosch Gmbh Robert | TENSION RAIL AND METHOD FOR PRODUCING TENSION RAILS |
DE4300284C2 (en) * | 1992-07-08 | 2003-10-09 | Suspa Holding Gmbh | impact absorbers |
FR2710893B1 (en) * | 1993-10-05 | 1995-11-17 | Smh Management Services Ag | Chassis for a vehicle, especially for a motor vehicle. |
DE19517921A1 (en) * | 1995-05-16 | 1996-11-21 | Bayerische Motoren Werke Ag | Vehicle frame with hollow chambers in longitudinal bearer |
DE19603958A1 (en) * | 1996-02-05 | 1997-08-07 | Ymos Ag Ind Produkte | Fixing device to attach damper or bearer to vehicle bumper |
DE19611934C1 (en) * | 1996-03-27 | 1997-04-17 | Ymos Ag Ind Produkte | Front module for road vehicle |
-
1997
- 1997-04-11 DE DE19715308A patent/DE19715308C2/en not_active Expired - Fee Related
-
1998
- 1998-04-14 EP EP98931912A patent/EP0904226A1/en not_active Withdrawn
- 1998-04-14 WO PCT/DE1998/001048 patent/WO1998046470A2/en not_active Application Discontinuation
- 1998-04-14 CZ CZ984096A patent/CZ409698A3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9846470A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE19715308C2 (en) | 2001-06-13 |
WO1998046470A3 (en) | 1999-01-21 |
CZ409698A3 (en) | 1999-04-14 |
WO1998046470A2 (en) | 1998-10-22 |
DE19715308A1 (en) | 1998-10-22 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19981130 |
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AK | Designated contracting states |
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17Q | First examination report despatched |
Effective date: 20010521 |
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GRAG | Despatch of communication of intention to grant |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20021012 |