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WO2012051738A1 - Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible - Google Patents

Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible Download PDF

Info

Publication number
WO2012051738A1
WO2012051738A1 PCT/CN2010/001647 CN2010001647W WO2012051738A1 WO 2012051738 A1 WO2012051738 A1 WO 2012051738A1 CN 2010001647 W CN2010001647 W CN 2010001647W WO 2012051738 A1 WO2012051738 A1 WO 2012051738A1
Authority
WO
WIPO (PCT)
Prior art keywords
door
trim panel
fixing element
net
end part
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.)
Ceased
Application number
PCT/CN2010/001647
Other languages
English (en)
Inventor
Jérôme MEZIERE
Paul Wang
Philippe Benat-Aissi
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.)
Faurecia Interieur Industrie SAS
Original Assignee
Faurecia Interieur Industrie SAS
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 Faurecia Interieur Industrie SAS filed Critical Faurecia Interieur Industrie SAS
Priority to PCT/CN2010/001647 priority Critical patent/WO2012051738A1/fr
Priority to CN2010900016274U priority patent/CN203318346U/zh
Publication of WO2012051738A1 publication Critical patent/WO2012051738A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/216—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member comprising tether means for limitation of cover motion during deployment
    • 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
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R2021/161—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory

Definitions

  • Trim panel for an automotive vehicle comprising a door hinged on the trim panel by a flexible hinge member
  • the present invention relates to a trim panel for an automotive vehicle of the type covering an airbag device, said trim panel comprising a door for the passage of an airbag cushion, said door being movable between a closed position, wherein the door covers the airbag device, and an open position, wherein the door is moved to enable the passage of the airbag cushion, said door being moved by at least a flap mounted on a hinge member formed by a flexible net, a first end part of the net being overmoulded by the flap, and a second end part of the net being overmoulded by a fixing element attached to a support member of the airbag device, said support member being fixed to the trim panel, the articulation of the hinge member being formed by a net hinge part extending between the first and second end parts.
  • This trim panel is for example used to form a dashboard.
  • Automotive dashboards often comprise an airbag which forms a safety device and which, in service, passes through a dashboard aperture closed by a flap and inflates in front of a passenger.
  • a number of devices are already known for articulating a flap onto a dashboard body and creating the conditions required for deployment of the air bag without additionally endangering the passengers.
  • the articulation between the flap and the dashboard body is performed by a net, which comprises a centre part extending between two end parts, one of the end part being overmoulded by the flap and the other being overmoulded by a fixing element attached to the support member of the airbag device.
  • the centre part which is loose between the two ends, forms a soft hinge having the required flexibility and which remains efficient, even at low temperatures, i.e. which does not present the risk of breaking at low temperatures.
  • the net enables both the flap to rotate during the expansion of the airbag cushion and to maintain the flap attached to the dashboard, preventing it to escape in the vehicle compartment, which could be dangerous.
  • the length of the net overmoulded by the fixing element is relatively small.
  • the energy due to the expansion of the airbag cushion imposes a great deal of stress on the net, which tends to be damaged inside the fixing element. This damaging can lead to tearing of the net or to expulsion of the net from the fixing element.
  • the net does not fulfil its functions and the device can be dangerous for the passengers of the vehicle in case of a shock.
  • One of the aims of the invention is to solve the aforementioned problem, by providing a device enabling to increase the length of the net overmoulded by the fixing element without substantially increasing the space requirement to accommodate said fixing element.
  • the invention relates to a trim panel of the aforementioned type, wherein the fixing element comprises at least a first portion and a second portion, said portions extending in different directions so as to define an elbow portion between them, the second end part of the net being overmoulded by at least said first and second portions of the fixing element.
  • the fixing element comprises a third portion, said third portion defining with the second portion a second elbow portion, the second end part being further overmoulded by said third portion ;
  • the second end part of the net comprises an extreme end part protruding from the fixing element opposite the hinge part of the net, said extreme end part comprising an abutment element, so that, during the expansion of the airbag cushion, the abutment element prevents the second end part from coming out of the fixing element;
  • the fixing element comprises a recess, the hinge part of the net being accommodated in said recess when the door is in the closed position;
  • the hinge part of the net is maintained in a retracted state when the door is in the closed position, the hinge part passing in a deployed state when the door moves to the open position, the hinge member forming the only attachment of the door to the trim panel when said door is in the open position;
  • said hinge part is maintained in the retracted state by a fusible seam passing through the folds of the hinge part or by adhering the folds of the hinge part together; - the hinge part is compressed in the retracted state so that its volume is reduced compared to the hinge part in the deployed state;
  • the fixing element is attached to the support member by attachment means, said attachment means being arranged to maintain the fixing element attached to the support member when the door moves from the closed position to the open position;
  • the support member and the flap are attached to a substrate covered by a skin, forming the outer face of the trim panel, the door being formed in said substrate and said skin.
  • Fig. 1 is a sectional view of part of a trim panel showing a fixing element according to a first embodiment of the invention
  • FIG. 2 is an enhanced view of area II of Fig. 1 showing the fixing element
  • Fig. 3 is a sectional view of part of a trim panel showing a fixing element according to a second embodiment of the invention
  • - Fig. 4 is a sectional view of part of a trim panel showing a fixing element according to a third embodiment of the invention.
  • a trim panel 1 for a dashboard of an automotive vehicle.
  • the trim panel 1 comprises a substrate 2 covered by a skin 4, forming the outer face 6 of the trim panel 1, i.e. the visible face of the trim panel 1.
  • the substrate 2 is a rigid insert. It could also be an insert covered by a foam layer.
  • the skin 4 and the substrate 2 could also be formed by the same element, if said element has a satisfactory aspect.
  • the substrate 2 covers an airbag device 8 which is attached to the inner face 10 of the substrate 2 by a support member 12, for example made of plastics material, to which a housing 14 of the airbag device 8 is fixed for example by hooking means 16, as shown in Fig. 1, or other fixing means.
  • the support member 12 is itself fixed to the inner face 10 of the substrate 2 for example by welding or by other fixation means.
  • the housing 14 comprises an aperture 18 arranged opposite a door 20 formed in the trim panel 1, i.e. the door is formed by an area of the substrate 2 and by an area of the skin 4 arranged opposite the aperture 18.
  • the door 20 is movable between a closed position, wherein the door 20 closes the aperture 18 and covers the airbag device 12, and an open position (shown in dot-lines in Fig. 1), wherein the door 20 is moved away from the aperture 18 to allow the passage of an airbag cushion deploying through the aperture 18 towards the vehicle compartment.
  • the support member 12 surrounds the opening 18 and forms guiding means to guide the direction of expansion of the airbag cushion.
  • the door 20 is for example integral with the rest of the trim panel 1 , i.e. the door 20 is not visible from the vehicle compartment when said door is in the closed position, which gives a good appearance to the outer face 6 of the trim panel 1.
  • the door 20 is for example surrounded by a weakening line formed in the substrate 2 and in the skin 4 and which allows said substrate 2 and said skin 4 to tear around the door 20 when the airbag cushion is deployed. The door 20 can then move in the open position.
  • the door 20 is separated from the rest of the trim panel 1 and is attached to said trim panel 1 in the closed position by fixing means, as conventionally known.
  • the door 20 is not sufficiently rigid to guarantee its movement to the open position during the deployment of the airbag cushion.
  • the door 20 could be deformed without tearing the weakening line surrounding it or without breaking the fixation means of the door 20 to the rest of the trim panel 1.
  • at least one rigid flap 22 is arranged against the door 20 opposite the aperture 18. The cushion therefore presses on said flap 22 during its deployment.
  • the flap 22 is for example made of the same material as the support member 12, i.e. plastics material.
  • the material is chosen to guarantee that the force applied on the flap 22 will lead to the movement of the door 20 to its open position. Therefore, the flap 22 enables an optimal transmission of the energy due to the deployment of the airbag to the door 20 and its weakening line or fixing means.
  • the flap 22 is for example welded or glued to the inner face of the door 20. According to another embodiment, two flaps could be arranged against the door 20 if the door 20 is formed in two parts separating from each other when the door 20 moves in the open position.
  • the flap 22 is articulated relative to the trim panel 1 , outside the door 20, in order to enable the movement of the door 20 from the closed position to the open position. Therefore, the flap 22 is hinged to the support element 12 via a soft hinge member 24 formed by a net.
  • a net to form a flexible and soft hinge member is known.
  • the net is for example a knitted or woven net, as known.
  • the net comprises a first end part 26, attached to the flap 22, and a second en part 28, attached to the support member 12, a central hinge part 30, forming the articulation of the hinge member, extending between said first 26 and second 28 end parts.
  • the first end part 26 is overmoulded by the flap 22, i.e. the material forming the flap 22 is injected over the first end part 26 and said material covers and penetrates the meshes of the net forming the first end part 26.
  • Such an overmoulding technique guarantees a good fixation of the first end part 26 to the flap 22, said fixation having a high resistance preventing the flap 22 from separating from the first end part 26 during the deployment of the airbag.
  • the second end part 28 of said hinge member 24 is overmoulded by a fixing element 32, separated from the support member 12, and attached to said support member 12, before the support member 12 and the flap 22 are fixed to inner face 10 of the trim panel 1.
  • the fixing element 32 is therefore a separate plastics element, the material of which is injected over the second end part 28 and said material covers and penetrates the meshes of the net forming the second end part 28.
  • the fixing element 32 is attached to the support member 12 by attachment means 34, such as a screw (Fig. 1 , 2 and 3) or clips made integral with the fixing element (Fig. 4) or a combination of a screw and clips or other suitable means.
  • the attachment means 34 and the support element 12 are arranged in order to sustain the forces applied on the fixing element 32 during the deployment of the airbag and prevent the fixing element 32 from separating from the support element 12 during said deployment.
  • the shape of the support member 12 is adapted to receive the fixing element 32, for example in a cavity 36, and comprises a bore 38 for receiving the attachment means 34.
  • the fixing element 32 is arranged to overmould a large length of the net forming the second end part 28 in order to prevent the net to be damaged inside the fixing element 32 under the effect of the energy of deployment of the airbag and ensure that the hinge member 24 remains attached to the fixing element 32 and therefore to the trim panel 1 during the deployment of the airbag.
  • the fixing element 32 comprises at least a first portion 40 and a second portion 42 extending, in different directions so as to define an elbow portion between them, the first 40 and second 42 portions both overmoulding the second end part 28 of the hinge member 24.
  • the length of the net overmoulded by said fixing element 32 can be increased relative to a fixing element 32 having only a straight portion, without substantially increasing the space requirement to receive the fixing element 32.
  • the change of direction between the first portion 40 and the second portion 42 enables to save space and the net, passing through said first 40 and second 42 portions, can have a greater length covered by said portions.
  • the angle between the first 40 and second 42 portions is chosen to optimize the space requirement of the fixing element 32 relative to its environment, and in particular to the shape of the support element 12. This angle is for example comprised between 10° and 160°.
  • the shape of the fixing element 32 can be chosen such that the fixing element 32 can be made by a single injection step and taken out of a mould easily.
  • the fixing element 32 further comprises a third portion 44 forming another elbow portion with the second portion 42, the second end portion 28 of the hinge member 24 being also overmoulded by said third portion 44, to further increase the length of the net overmoulded by the fixing element 32.
  • the third portion 44 can also serve as anchoring means for attaching the fixing element 32 to the support member 12, as shown in Fig. 2 and 3.
  • the second end part 28 of the net further comprises an extreme end part 46 protruding from the fixing element 32 opposite the hinge part 30 of the net, for example protruding from the third portion 44.
  • the extreme end part 46 extends therefore outside of the fixing element 32.
  • the extreme end part 46 comprises an abutment element 48, so that, during the expansion of the airbag cushion, the abutment element 48 prevents the second end part 28 from coming out of the fixing element 32.
  • the abutment means 48 will come in contact with the fixing element 32 and prevent further displacement of the net.
  • the extreme end part 46 is folded on itself and a seam attaches the folds of the extreme end part 46 together, said seam forming the abutment means 48.
  • Such abutment means 48 and others are for example described in document WO-2009/136041.
  • the centre hinge part 30 of the hinge member 24 has a certain length to make sure that the door 20 will be sufficiently spaced from the aperture 18 during the expansion of the airbag cushion to ensure that the passage is free for said cushion.
  • the hinge part 30 can not be left hanging under the door 20.
  • tools are used, for example welding tools, to attach the flap 22 to the door 20 after the fixing element 32 has been attach to the support member 12 and said tools could damage the hinge part 30 if said hinge part was left in the way of the tools, i.e if the hinge part extends under the door 20.
  • the hinge member 24 is the only attachment of the door 20 to the trim panel 1 when said door 20 is in the open position. Therefore, if the hinge member 24 does not retain the door 20, said door 20 is ejected in the vehicle compartment during the expansion of the airbag cushion and can injure the passengers of the vehicle.
  • the fixing element 32 comprises a recess 50 in which the hinge part 30 is disposed.
  • the recess 50 is for example formed by the first 40, second 42 and third 44 portions of the fixing element 32, as shown in Fig. 4, or by the fixing element 32 and a part of the support member 12 as shown in Fig. 3, or by a particular shape of the fixing element 32 as shown in Fig. 1 and 2.
  • the hinge part 30 is placed in a retracted state when the door 20 is in the closed position.
  • the hinge part 30 is folded on itself in the retracted state and is maintained is said state by a fusible seam 52 passing through the folds (Fig. 2) or by making the folds adhere to each other for example by partial melting of the surface of the folds.
  • the seam 52 or the adherence of the folds together are arranged to break during the movement of the door 20 so that the hinge part 30 can unfold and pass in a deployed state (in dot lines in Fig. 1).
  • the hinge part 30 therefore requires less space to be accommodated.
  • the hinge part 30 is compressed in the retracted state so that its volume is reduced compared to the hinge part 30 in the deployed state.
  • the fixing element 32 can be formed in several pieces connected together by the second end part 28 of the net, said second end part 28 then comprising a portion extending outside the fixing element 32 between the pieces of the fixing element 32, as shown in Fig. 3.
  • the above described trim panel 1 is particularly adapted to be used in the dashboard of an automotive vehicle and guarantees the safe functioning of an airbag device by preventing the hinge member 24 to be deteriorated or ejected during the deployment of the airbag cushion. Furthermore, the hinge member 24 requires a small space to be accommodated so that it can be easily integrated under the trim panel 1 with other components extending in its environment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

Un panneau d'habillage (1) recouvre un dispositif de coussin de sécurité gonflable (8) et comprend une portière (20) mobile entre une position fermée, dans laquelle la portière (20) recouvre le dispositif de coussin de sécurité gonflable (8), et une position ouverte, dans laquelle la portière (20) est déplacée par un rabat (22) monté sur un organe charnière (24) formé par un treillis. La première partie d'extrémité (26) du treillis est surmoulée sur le rabat (22), et la seconde partie d'extrémité (28) de celui-ci est surmoulée sur un élément de fixation (32). L'articulation de l'organe charnière (24) est formée par une partie (30) de charnière s'étendant entre les première (26) et seconde (28) parties d'extrémité. L'élément de fixation (32) comprend au moins une première partie (40) et une seconde partie (42) sur lesquelles la seconde partie d'extrémité (28) est respectivement surmoulée.
PCT/CN2010/001647 2010-10-21 2010-10-21 Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible Ceased WO2012051738A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2010/001647 WO2012051738A1 (fr) 2010-10-21 2010-10-21 Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible
CN2010900016274U CN203318346U (zh) 2010-10-21 2010-10-21 包括由挠性铰接件铰接在装饰板上的门的机动车用装饰板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/001647 WO2012051738A1 (fr) 2010-10-21 2010-10-21 Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible

Publications (1)

Publication Number Publication Date
WO2012051738A1 true WO2012051738A1 (fr) 2012-04-26

Family

ID=45974608

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/001647 Ceased WO2012051738A1 (fr) 2010-10-21 2010-10-21 Panneau d'habillage pour véhicule automobile comprenant une portière s'articulant sur le panneau d'habillage par un organe charnière flexible

Country Status (2)

Country Link
CN (1) CN203318346U (fr)
WO (1) WO2012051738A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104228750A (zh) * 2013-06-24 2014-12-24 佛吉亚内饰工业公司 车用安全装置
US20140375029A1 (en) * 2013-06-24 2014-12-25 Faurecia Interieur Industrie Safety Device for Vehicle
DE102015001103A1 (de) * 2015-01-30 2016-08-04 K.L. Kaschier- Und Laminier Gmbh Verbundwerkstoff für eine Airbagabdeckung
US11485310B2 (en) 2018-04-26 2022-11-01 Faurecia Interieur Industrie Airbag system for a vehicle and method for manufacturing the airbag system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9421933B1 (en) * 2015-04-21 2016-08-23 Ford Global Technologies, Llc Active glove box door with intermediate skeleton member
CN117549851B (zh) * 2024-01-02 2024-03-12 四川护邑科技有限公司 一种减少安全气囊对人体冲击的防护装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315853A1 (de) * 1993-05-12 1994-11-17 Ymos Ag Ind Produkte Armaturentafel mit Beifahrer-Airbag
CN2528664Y (zh) * 2002-01-04 2003-01-01 葫芦岛尊帝实业有限责任公司 汽车安全气囊展开门
US20040232668A1 (en) * 2003-05-07 2004-11-25 Depue Todd Airbag support assembly for a vehicle instrument panel
DE102007055016B3 (de) * 2007-11-14 2008-11-27 Faurecia Innenraum Systeme Gmbh Verkleidungsteil mit Airbagabdeckung und Verfahren zum Herstellen eines Verkleidungsteils
US20090026740A1 (en) * 2007-07-26 2009-01-29 Lisa Draexlmaier Gmbh Knitted fabric comprising inlaid yarns for airbag flap
WO2010037915A1 (fr) * 2008-10-02 2010-04-08 Faurecia Interieur Industrie Ensemble d'habillage intérieur pour véhicule automobile et véhicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315853A1 (de) * 1993-05-12 1994-11-17 Ymos Ag Ind Produkte Armaturentafel mit Beifahrer-Airbag
CN2528664Y (zh) * 2002-01-04 2003-01-01 葫芦岛尊帝实业有限责任公司 汽车安全气囊展开门
US20040232668A1 (en) * 2003-05-07 2004-11-25 Depue Todd Airbag support assembly for a vehicle instrument panel
US20090026740A1 (en) * 2007-07-26 2009-01-29 Lisa Draexlmaier Gmbh Knitted fabric comprising inlaid yarns for airbag flap
DE102007055016B3 (de) * 2007-11-14 2008-11-27 Faurecia Innenraum Systeme Gmbh Verkleidungsteil mit Airbagabdeckung und Verfahren zum Herstellen eines Verkleidungsteils
WO2010037915A1 (fr) * 2008-10-02 2010-04-08 Faurecia Interieur Industrie Ensemble d'habillage intérieur pour véhicule automobile et véhicule automobile

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104228750A (zh) * 2013-06-24 2014-12-24 佛吉亚内饰工业公司 车用安全装置
US20140375029A1 (en) * 2013-06-24 2014-12-25 Faurecia Interieur Industrie Safety Device for Vehicle
FR3007348A1 (fr) * 2013-06-24 2014-12-26 Faurecia Interieur Ind Dispositif de securite pour vehicule
US9045106B2 (en) 2013-06-24 2015-06-02 Faurecia Interieur Industrie Safety device for vehicle
CN104228750B (zh) * 2013-06-24 2018-04-10 佛吉亚内饰工业公司 车用安全装置
DE102015001103A1 (de) * 2015-01-30 2016-08-04 K.L. Kaschier- Und Laminier Gmbh Verbundwerkstoff für eine Airbagabdeckung
US10384632B2 (en) 2015-01-30 2019-08-20 K.L. Kaschier-Und Laminier Gmbh Composite material for an airbag cover
US11485310B2 (en) 2018-04-26 2022-11-01 Faurecia Interieur Industrie Airbag system for a vehicle and method for manufacturing the airbag system

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