WO2005075188A1 - Piece de carrosserie de voiture a support autonome - Google Patents

Piece de carrosserie de voiture a support autonome Download PDF

Info

Publication number
WO2005075188A1
WO2005075188A1 PCT/CH2004/000375 CH2004000375W WO2005075188A1 WO 2005075188 A1 WO2005075188 A1 WO 2005075188A1 CH 2004000375 W CH2004000375 W CH 2004000375W WO 2005075188 A1 WO2005075188 A1 WO 2005075188A1
Authority
WO
WIPO (PCT)
Prior art keywords
substructure
body part
vehicle body
self
outer skin
Prior art date
Application number
PCT/CH2004/000375
Other languages
English (en)
Inventor
Claude Buisson
Original Assignee
Rieter Technologies Ag
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 Rieter Technologies Ag filed Critical Rieter Technologies Ag
Priority to BRPI0418510-2A priority Critical patent/BRPI0418510A/pt
Priority to EP04737031A priority patent/EP1718457A1/fr
Priority to JP2006544194A priority patent/JP4359620B2/ja
Publication of WO2005075188A1 publication Critical patent/WO2005075188A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

Definitions

  • the present invention relates to a self-supporting car body part, and in particular to a shock and sound absorbent motor bonnet according to the preamble of Claim 1 , as well as to a suitable substructure for the manufacture of such a car body part
  • Motor bonnets such as are used in the field of motor vehicle manufacture essentially have a covering made of a thin metal sheet or a synthetic material and are stiffened with struts or similar structures
  • modern motor vehicles are provided with acoustically effective linings in order to reduce the engine noises emitted towards the exterior
  • this publication concerns an acoustically effective part such as is used in the aeroplane industry
  • this part comprises a core layer with a honeycomb structure, whose individual cavities communicate acoustically with each other via drainage openings
  • This core layer is bounded on the one side by a perforated or open-celled cover layer in order to be acoustically effective
  • This assembly is not suited in any way for shock absorbing functions
  • An analogue acoustically effective assembly is disclosed in FR-2,727, 189
  • This assembly also comprises a core layer having a honeycomb structure which can be filled with an open-celled foam, and which is provided on both sides with outer cover layers made of an open-celled synthetic foam
  • This assembly is used for sound insulation in buildings and does not exhibit any particular shock absorbent properties
  • Analogue assemblies for use in any passenger vehicles are also known, for example, from DE-U- 296,07,262
  • the element disclosed in this publication is used as a roof liner in motor vehicles
  • This element comprises a honeycomb layer as a core layer and on both sides of this core layer comprises a cover layer made of fibrous material These cover layers are melted onto the honeycomb layer and, due to the material bonding, result in an increased stiffness of the entire element
  • This arrangement provides stability, provides an enhanced tensile strength but does not have any particular acoustic or shock absorbing properties
  • CH-692,731 discloses an ultralight package for use in vehicles, which combines shock and sound absorbing properties This package is suitable for protecting passengers and is preferably used in the crash sensitive part of the foot space This package does not have any particularly stiffening properties and is only laid into the existing vehicle space
  • the vehicle body part according to the invention comprises a substructure and an outer skin, whereby said substructure comprises a core layer, preferably a honeycomb-like core layer
  • This core layer, on the noise emission side comprises an open-celled first cover layer and a second cover layer on the outer skin side
  • This substructure is attached to the outer skin by means of suitable attachment means
  • the HPC-value of the entire self- supporting vehicle body part is less than 1000
  • the air flow resistance of the cover layer on the noise emission side is between 200 and S000 Ns/m 3
  • HPC-value is defined as follows
  • a the resultant acceleration is a multiple of "g" t1 and t2 the two time instants (in seconds) during the impact, defining the beginning and the end of the recording for which the value of HPC is a maximum
  • the accelerations in the x-, y- and z-directions are measured for the center of gravity of the pedestrian's head and the resultant acceleration is calculated
  • the HPC-value can be determined based on the above formula, i e by integrating the resulting acceleration over time
  • the HPC-value is a dimension-free value
  • inventive car body part can be designed as a self-supporting motor bonnet, as a self-supporting trunk lid or as a self-supporting vehicle roof, and can be applied to any type of vehicle for road or rail transport
  • Fig 1 shows a schematic view of a vehicle body part according to the invention
  • Fig 2 shows a schematic view of a vehicle body part according to the invention having local fixation means
  • Fig 3 shows a schematic view of a vehicle body part according to the invention having additional shock absorbent elements
  • Fig 4 shows comparative measurement curves for the time-dependent progression of impact delay
  • Fig 5 shows a schematic view of a vehicle body part according to the invention comprising a substructure with locally arranged omega-shaped deformations, and
  • FIG 6 shows a schematic view of a vehicle body part as shown in Fig 5 comprising a substructure having locally compressed areas
  • the assembly according to the invention is schematically shown in Figure 1
  • This Figure shows a self-supporting vehicle body part 1 with a honeycomb-like core layer 2, which comprises an open-celled covering layer 3 on the engine compartment side and a covering layer 4 on the outer skin side, said covering layer 4 on the outer skin side being bonded to an outer skin 6 by means of a bonding or adhesive agent
  • the assembly comprising the honeycomb-like core layer 2 and both covering layers 3, 4 is hereinafter called the substructure 7
  • the core layer 2 is preferably made of cardboard, aluminium, Nomex® or other deformable materials, in particular made of plastic materials such as PA, polyester, PL) It is evident that other suitable materials be used, such as recycled or corrugated cardboard or TS-foam (PU- or polyamide-based foam) or TP-foam (EPP, Notyl® EEF or similar) or metallic foams
  • the required stiffness of the inventive self-supporting vehicle body part 1 is essentially defined by the stiffening effect of the substructure 7
  • the expert will compile a suitable choice of designs, materials, thickness and stiffness of the individual layers
  • the expert will consider to choose a suitable thickness, cell size, compression resistance or material for the honeycomb-like layer, whilst taking into consideration the nature of material, the surface weight, the bonding strength of the skin
  • the acoustic efficacy of the inventive vehicle body part 1 is essentially defined by the acoustic properties of the substructure 7
  • the open celled cover layer 3 has an air flow resistance of between 200 to 5000 Ns/m 3
  • the substructure 7 can - at least locally - be provided with further honeycomb-like or foam layers 8 and additional fibrous layers 9, as is seen in Figure 3
  • the vehicle body part 1 can be provided with further elements, and in particular with additional elements 1 1 for attaching hinges or other closure elements, as shown schematically in Figure 2
  • the vehicle body part 1 can be provided with a thermal protection, in particular with an aluminium foil
  • EMC protection electromagnetic waves
  • Figure 4 shows measurement curves of the time-dependent progression of the impact delay for several different arrangements
  • the critical HPC (head performance criteria) value is measured for the head of a child's body, the head weighing 3 5 kg (or for the head of an adult's body, the head weighing 4 8 kg), and at an impact velocity of 35 km/hr
  • This value should be less than one thousand (HPC ⁇ 1000) in order to meet the guidelines for shock absorption of the European automobile industry
  • Figure 5 shows a schematic view of a vehicle body part according to the invention comprising a substructure with a locally arranged omega-shaped deformation This design is useful to increase the stiffness of the entire vehicle body part
  • the geometry of such a shaped substructure is adjusted such that the HPC-value remains below 1000
  • a local padding or local substructures 8 can be added
  • Figure 6 shows the vehicle body part as shown in Figure 5, comprising locally compressed areas 12, 13, which allows to vary the stiffness of the substructure In particular this further allows to decrease the first peak of the dynamic force deflection It is understood that the claimed substructure can be covered at least locally with an aluminium film to assure a good thermal resistance
  • this substructure is covered by a nonwoven fabric or a foil, which can be removed after painting, if this vehicle body part is assembled before painting.
  • the expert will take into consideration to design the substructure comprising structural folds or to provide this substructure with fire-resistant, chemical-resistant and humidity-resistant additives
  • the structure according to the invention can be designed and dimensioned in such a manner that future norms for the protection of pedestrians according to ACEA and/or EEC WG17 can be met, or that equivalent rules in other countries (USA, Japan etc ) are met
  • the current rules concern only a crash on to a windscreen and are not mandatory or are merely facultatively applicable to motor bonnets
  • this vehicle body part can be designed as a headlmer which fulfils the FMVSS 201 regulations
  • the present invention allows a more compact vehicle construction, in that the vehicle body part can be arranged closer to the engine block or to another rigid element (aggregate, battery, or similar) This is ensured, in particular, by an increased energy absorption caused by a deformation of the entire self-supporting vehicle body part, as well as by the progressive compression behaviour of the substructure In this way, the spacing between the engine block or any other rigid vehicle element can be reduced by 25% without exceeding the prescribed HPC-value (or HIC-value, i e head injury crite ⁇ um)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Superstructure Of Vehicle (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Dampers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une pièce de carrosserie de voiture à support autonome (1) comprenant une sous structure (7) et une peau extérieure (6). Cette sous structure (7) comprend une couche noyau de type de nid d'abeille (2) recouverte par une première couche de recouvrement à alvéoles ouverts (3) côté émission de bruit et par une seconde couche de recouvrement (4) côté peau extérieure. Cette sous structure est fixée à la peau extérieure (6) au moyen d'organes d'attache (5) adaptés. La valeur HPC de cette pièce de véhicule à support autonome complète (1) est inférieure à 1000. La résistance à l'air de la couche de recouvrement (3) est comprise entre 200 et 5000 Ns/m3.
PCT/CH2004/000375 2004-02-05 2004-06-18 Piece de carrosserie de voiture a support autonome WO2005075188A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0418510-2A BRPI0418510A (pt) 2004-02-05 2004-06-18 parte de carroçaria de veìculo auto-suportável
EP04737031A EP1718457A1 (fr) 2004-02-05 2004-06-18 Piece de carrosserie de voiture a support autonome
JP2006544194A JP4359620B2 (ja) 2004-02-05 2004-06-18 自己支持型車体部品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1742004 2004-02-05
CH174/04 2004-02-05

Publications (1)

Publication Number Publication Date
WO2005075188A1 true WO2005075188A1 (fr) 2005-08-18

Family

ID=34832016

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2004/000375 WO2005075188A1 (fr) 2004-02-05 2004-06-18 Piece de carrosserie de voiture a support autonome

Country Status (5)

Country Link
EP (1) EP1718457A1 (fr)
JP (1) JP4359620B2 (fr)
KR (1) KR20060120273A (fr)
BR (1) BRPI0418510A (fr)
WO (1) WO2005075188A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006061123A1 (fr) * 2004-12-11 2006-06-15 Daimler Chrysler Ag Vehicule automobile
WO2007025791A1 (fr) * 2005-08-30 2007-03-08 Lanxess Deutschland Gmbh Dispositif de protection passive pour vehicule a moteur
JP2007118747A (ja) * 2005-10-27 2007-05-17 Kaneka Corp 自動車用フロア構造
EP1844993A1 (fr) 2006-04-11 2007-10-17 Menzolit-Fibron GmbH Capot de véhicule avec plus de sécurité pour les piétons
WO2007121865A1 (fr) * 2006-04-25 2007-11-01 Lanxess Deutschland Gmbh Dispositif de protection passif d'un véhicule automobile
WO2013142423A1 (fr) * 2012-03-23 2013-09-26 B/E Aerospace, Inc. Système de cuisine isolé acoustiquement et thermiquement
WO2014026145A1 (fr) * 2012-08-10 2014-02-13 B/E Aerospace, Inc. Construction d'avion comportant isolation thermique et absorption acoustique améliorées
CN111712378A (zh) * 2018-02-23 2020-09-25 宝马股份公司 用于敞篷车的车顶元件和车顶和敞篷车
US20220242086A1 (en) * 2019-06-11 2022-08-04 Teijin Automotive Technologies, Inc. Composite material vehicle component construct

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101248461B1 (ko) * 2011-02-01 2013-03-28 국방과학연구소 수중운동체 부착용 고무 타일 및 이를 구비한 수중운동체
JP6079514B2 (ja) * 2013-09-06 2017-02-15 豊田合成株式会社 自動車用フード

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375686A1 (fr) * 1976-12-23 1978-07-21 Phoenix Gummiwerke Ag Panneau d'isolation acoustique et thermique
US5836547A (en) * 1996-04-08 1998-11-17 Aircraft Modular Products, Inc. Attenuated seat back assembly for an aircraft passenger seat
DE10117214A1 (de) * 2001-04-06 2002-10-17 Opel Adam Ag Kopfaufpralloptimierte Motorhaube
US6569509B1 (en) * 1998-01-09 2003-05-27 Rieter Automotive (International) Ag Ultralight, sound and shock absorbing component set

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375686A1 (fr) * 1976-12-23 1978-07-21 Phoenix Gummiwerke Ag Panneau d'isolation acoustique et thermique
US5836547A (en) * 1996-04-08 1998-11-17 Aircraft Modular Products, Inc. Attenuated seat back assembly for an aircraft passenger seat
US6569509B1 (en) * 1998-01-09 2003-05-27 Rieter Automotive (International) Ag Ultralight, sound and shock absorbing component set
DE10117214A1 (de) * 2001-04-06 2002-10-17 Opel Adam Ag Kopfaufpralloptimierte Motorhaube

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006061123A1 (fr) * 2004-12-11 2006-06-15 Daimler Chrysler Ag Vehicule automobile
WO2007025791A1 (fr) * 2005-08-30 2007-03-08 Lanxess Deutschland Gmbh Dispositif de protection passive pour vehicule a moteur
JP2007118747A (ja) * 2005-10-27 2007-05-17 Kaneka Corp 自動車用フロア構造
EP1844993A1 (fr) 2006-04-11 2007-10-17 Menzolit-Fibron GmbH Capot de véhicule avec plus de sécurité pour les piétons
WO2007121865A1 (fr) * 2006-04-25 2007-11-01 Lanxess Deutschland Gmbh Dispositif de protection passif d'un véhicule automobile
US9868530B2 (en) 2012-03-23 2018-01-16 B/E Aerospace, Inc. Acoustically and thermally insulated galley shell
WO2013142423A1 (fr) * 2012-03-23 2013-09-26 B/E Aerospace, Inc. Système de cuisine isolé acoustiquement et thermiquement
CN104507805A (zh) * 2012-03-23 2015-04-08 Be航天公司 隔音及隔热的厨房壳体
WO2014026145A1 (fr) * 2012-08-10 2014-02-13 B/E Aerospace, Inc. Construction d'avion comportant isolation thermique et absorption acoustique améliorées
US9085351B2 (en) 2012-08-10 2015-07-21 B/E Aerospace, Inc. Aircraft monument with improved thermal insulation and acoustic absorption
JP2015529595A (ja) * 2012-08-10 2015-10-08 ビーイー・エアロスペース・インコーポレーテッドＢ／Ｅ Ａｅｒｏｓｐａｃｅ， Ｉｎｃ． 断熱性と吸音性が改良された航空機モニュメント
CN104520189A (zh) * 2012-08-10 2015-04-15 Be航天公司 具有改善的绝热和吸音的飞机立体空间
CN111712378A (zh) * 2018-02-23 2020-09-25 宝马股份公司 用于敞篷车的车顶元件和车顶和敞篷车
US11858323B2 (en) 2018-02-23 2024-01-02 Bayerische Motoren Werke Aktiengesellschaft Convertible top element and convertible top for a convertible vehicle and convertible vehicle
US20220242086A1 (en) * 2019-06-11 2022-08-04 Teijin Automotive Technologies, Inc. Composite material vehicle component construct

Also Published As

Publication number Publication date
JP2007513836A (ja) 2007-05-31
KR20060120273A (ko) 2006-11-24
EP1718457A1 (fr) 2006-11-08
BRPI0418510A (pt) 2007-05-15
JP4359620B2 (ja) 2009-11-04

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