GB2238989A - Energy absorbing vehicle door - Google Patents
Energy absorbing vehicle door Download PDFInfo
- Publication number
- GB2238989A GB2238989A GB9025088A GB9025088A GB2238989A GB 2238989 A GB2238989 A GB 2238989A GB 9025088 A GB9025088 A GB 9025088A GB 9025088 A GB9025088 A GB 9025088A GB 2238989 A GB2238989 A GB 2238989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trim panel
- panel
- vehicle door
- trim
- door
- 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- Withdrawn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
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000002991 molded plastic Substances 0.000 description 3
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/042—Reinforcement elements
- B60J5/0452—Reinforcement elements including foams or expanded materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/042—Reinforcement elements
- B60J5/045—Panel type elements
-
- 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
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
- B60R21/0428—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings associated with the side doors or panels, e.g. displaced towards the occupants in case of a side collision
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
A door (10) includes an outer panel (12) and an inner panel (14) which are attached together and define a space (16) therebetween for mounting the window regulator and other door hardware. A door trim panel assembly (24) mounted on the inner panel includes a trim panel (28) of substantially rigid material carrying a decorative trim cover (30) facing the occupant. An energy absorbing collapsible device (26) is interposed between the inner panel and the trim panel for collapsibly absorbing energy imposed thereon. The trim panel (28) has structurally weakened portions, preferably in the form of a plurality of slots (40-46) integrally moulded into the trim panel, by which the trim panel predictably yields to communicate the impact into the energy absorber (26) for absorption. <IMAGE>
Description
-I- ENERGY ABSORBING VEHICLE DOOR This invention relates to a vehicle door
and more particularly provides a substantially rigid trim panel having structurally weakened portions by which the trim panel yields upon impact to communicate energy into an absorbEr concealed behind the trim panel.
It is well known in motor vehicles to provide a decorative door trim panel assembly which overlays the structural inner panel of the vehicle door. Such a door trim panel assembly is typically comprised of a trim panel moulded of a rigid sheet of plastic or hardboard covered with vinyl, cloth or other decorative cover material. The substantially rigid substrate provided by the trim panel serves to effectively mount the trim material on the vehicle door and also rigidifies the structure so that the trim panel will endure the rigors of customer use. The prior art has also recognized that the door trim panel assembly may be comprised of a foam material which collapses and absorbs energy upon imposition of a lateral force thereagainst.
It is also well known to provide an arm rest on the vehicle door and projecting inboard from the trim panel to provide a convenient rest for the occupant's arm. The prior art has also recognized that the arm rest may be comprised of a foam or honeycomb structure which will yield laterally upon imposition of a force thereagainst.
US patent no. 4,783,114 provides an arm rest which overlies a cavity provided in the door trim panel.assembly and which is yieldably mounted for collapse into the cavity upon imposition of a lateral force against the arm rest.
The present invention relates to an improvement in the aforedescribed door trim panel assemblies in which pre- selected areas of the trim panel are structurally weakened so that the trim panel yields upon the imposition of a predetermined impact thereagainst so that the impact energy is communicated through the trim panel and into an energy absorbing structure interposed between the inner panel of the vehicle door and the trim panel.
According to the present invention, a vehicle door includes an outer panel and an inner panel which are attached together and define a space therebetween; and a door trim panel assembly mounted on the inner panel on a side thereof facing away from the outer panel and including a trim panel of substantially rigid material carrying a trim cover, the trim panel having structurally weakened portions, preferably in the form of a plurality of aperture slots integrally moulded into the trim panel, by which the otherwise rigid trim panel predictably yields upon the imposition of an impact of predetermined magnitude thereagainst to absorb energy. An energy absorbing collapsible means may be interposed between the inner panel and the trim panel for collapsibly absorbing energy imposed thereon.
Accordingly, the object of the present invention resides in the provision of a trim panel which is structurally rigid to provide a durable door trim panel assembly for the vehicle door and yet has structurally weakened portions by which the trim panel predictably yields upon imposition of a force thereagainst to preferably communicate the imposed impact energy into an energy absorbing collapsible means underlying the trim panel.
The present invention will now be described, by way of example, with reference to the 2.
following description of a preferred embodiment, and the appended drawings. in which:-
Figure 1 is an elevation view of a vehicle door according to the invention and having dashed lines to indicate the location of aperture slots in the trim panel concealed beneath the trim cover; Figure 2 is a section view taken through the vehicle door in the direction of arrows 2-2 of Figure 1; and Figure 3 is an enlarged fragmentary view looking in the direction of arrows 3-3 of Figure 2 having parts broken away and in section showing the plurality of aperture slots provided in the trim panel.
Referring to Figures 1 and 2 it is seen that a vehicle door 10 includes an outer panel 12 and an inner panel 14 which are attached together in spaced apart relation by welding and hem flanging the peripheral edges thereof. A space 16 defined between the outer panel 12 and inner panel 14 provides a storage space for a window panel 18. In addition, door beam 20 is situated in the space 16 and extends longitudinally between the front and rear of the vehicle door 10.
The inside of the inner panel 14 is concealed by a door trim panel assembly generally indicated at 24. The door trim panel assembly 24 includes an inner absorbing member 26 comprised of an energy absorbing material such as expanded polystyrene foam, and thereby defining energy absorbing collapsible means. The inner absorbing member 26 is covered by a trim panel 28 which overlies the inner absorbing member 26 and is formed of a suitable rigid material such as moulded plastic or pressed hardboard. The trim panel 28 is covered with a trim cover 30 such as vinyl, leather, cloth., carpeting, or the like which is adhesively or otherwise secured on to the face of the trim panel 28 to provide a decorative cover facing the vehicle occupant.
An arm rest 32 is also provided on the vehicle door 10. As shown in Figure 2, the arm rest 32 is a foam and plastic assembly including a moulded plastic cap 34 which is sandwiched between a protruding portion 36 of the trim panel 28 and a mating portion 29 of the inner absorbing member 26 which defines a cavity 38. Reference may be had to US patent no. 4,783,114 for detailed description of the structure and function of the arm rest structure shown herein, as well as alternative armrest structures.
As best shown in Figure 3, the trim panel 28 of moulded plastic is provided with a plurality of aperture slots 40, 42, 44, and 46 which are moulded in place to structurally weaken the substrate trim panel 28, and thereby define structurally weakened portions. In Figure 1, the dashed lines indicate that these weakening aperture slots may be provided in a series of substantially vertical columns 50. 52, 54, 56 and 58 generally adjacent to the occupant's seated position. Upon the imposition of an occupant impact in generally a perpendicular direction to the trim panel 28 against the door trim panel assembly 24 from inside the vehicle, the arm rest structure 32 collapses into the cavity 38 and the trim panel 28 is also shifted bodily outward toward the inner panel 14 as permitted by energy absorbing yielding and compression and collapse of the foam of the inner absorbing member 26. During such impact imposition, the presence of the plurality of aperture slots 40-46 Y q:
predictably weakens the trim panel 28 permitting yielding thereof so that the impact force is effectively communicated through the trim panel 28 and into the inner absorbing member 26 for optimum management of the impact energy. However, the aperture slots 40-46 do not so substantially weaken the trim panel 28 as to diminish the structural integrity of the vehicle door trim assembly during the rigors of every day use.
It will be understood and appreciated that the aperture slots 40-46 are not limited to deployment in a plurality of columns 50, 52, 54, 56, and 58 as shown in Figure 1, but rather can be deployed in any pattern or configuration which proves beneficial in promoting the controlled communication of impact energy into the inner absorbing member 26. In addition, it will be appreciated that the inner absorbing member 26 herein is not limited to the use of expanded polystyrene foam. For example, another suitable energy absorbing structure is disclosed in US patent no. 4,890, 877.
Thus it is seen that the invention provides a new and improved door trim panel assembly which facilitates the absorption and management of impact energy imposed thereon from inside the vehicle.
Claims (7)
1. A vehicle door comprising an outer panel (12) and an inner panel (14) attached together and defining a space (16) therebetween; and a door trim panel assembly (24) mounted on the inner panel on a side thereof facing away from-the outer panel and including a trim panel (28) of substantially rigid material carrying a trim cover (30); characterised in that the trim panel has structurally weakened portions (40-46) therein by which the otherwise rigid trim panel predictably yields upon the imposition of an impact of predetermined magnitude thereagainst to absorb energy.
2. A vehicle door as claimed in claim 1, further comprising energy absorbing collapsible means (26)-interposed between the inner panel (14) and the trim panel (28) for collapsibly absorbing energy upon imposition of a predetermined level of force thereon, the trim panel predictably yielding to effectively communicate any imposed impact into the energy absorbing collapsible means.
3. A vehicle door as claimed in claim 2, wherein the energy absorbing collapsible means (26) supports the trim panel (28).
4. A vehicle door as claimed in any one of claims 1 to 3, wherein the structurally weakened portions comprise a plurality of openings (40-46) formed in the trim panel (28) in a predetermined pattern.
5. A vehicle door as claimed in claim 4, wherein the energy absorbing collapsible means (26) is of a collapsible foam and'the trim panel (28) is of moulded material and has moulded in place aperture slots (40-46) therein defining the plurality of openings.
1 1 Q.
6. A vehicle door as claimed in claim 5, wherein the apertured slots (4046) are formed in a series of spaced columns (50-58).
7. A vehicle door as claimed in any one of claims 1 to 6# wherein the trim panel (28) has an armrest (32) formed integral therein, the structurally weakened portions (40-46) of the trim panel promoting the collapse of the armrest upon imposition of force thereagainst.
Published 1991 atThe Patent Ofilce. State House. 66171 High Holborn. London WC1R47P. Further copies may be obtained from Sales Branch. Unit 6. Nine Mile Point Cwmfelinfach. Cross Keys, NewporL NPI 7HZ. Printed by Multiplex techniques ltd, St Mary Cray, Kent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44578189A | 1989-12-04 | 1989-12-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9025088D0 GB9025088D0 (en) | 1991-01-02 |
| GB2238989A true GB2238989A (en) | 1991-06-19 |
Family
ID=23770167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9025088A Withdrawn GB2238989A (en) | 1989-12-04 | 1990-11-19 | Energy absorbing vehicle door |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH03200420A (en) |
| CA (1) | CA2031391A1 (en) |
| DE (1) | DE4038659A1 (en) |
| GB (1) | GB2238989A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141279A (en) * | 1991-09-23 | 1992-08-25 | Davidson Textron Inc. | Side impact protection apparatus |
| GB2271534A (en) * | 1992-10-15 | 1994-04-20 | Ford Motor Co | Energy absorbing vehicle door. |
| GB2296222A (en) * | 1994-12-23 | 1996-06-26 | Ford Motor Co | A vehicle door with a load spreader between an intrusion beam and occupant padding |
| US5580116A (en) * | 1995-04-05 | 1996-12-03 | Ford Motor Company | Trim component having energy absorbing feature |
| EP0875424A2 (en) | 1997-04-29 | 1998-11-04 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Crash protection |
| DE19718062A1 (en) * | 1997-04-29 | 1998-11-05 | Ford Global Tech Inc | Impact-protector with energy-absorbent body for vehicles |
| DE19800476A1 (en) * | 1998-01-09 | 1999-07-15 | Ford Global Tech Inc | Impact-protector with energy-absorbent body for vehicles |
| WO2002081265A1 (en) * | 2001-04-05 | 2002-10-17 | Grupo Antolin-Ingenieria, S.A. | Geometrically modified inner vehicle panel capable of deforming under impact |
| US7794010B2 (en) | 2008-01-10 | 2010-09-14 | Toyota Boshoku Kabushiki Kaisha | Door trim |
| CN107472180A (en) * | 2017-08-28 | 2017-12-15 | 国金汽车集团有限公司 | One kind prevents that passenger from colliding with rear side wall plaque |
| EP3305567A4 (en) * | 2015-05-27 | 2018-05-02 | Nissan Motor Co., Ltd. | Vehicle door structure |
| US10000112B2 (en) | 2016-09-08 | 2018-06-19 | Ford Global Technologies Llc | Pelvic load management using integrated collapsible features in door trim panel |
| DE102020102608A1 (en) | 2020-02-03 | 2021-08-05 | Ford Global Technologies, Llc | Door assembly for a motor vehicle |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542000U (en) * | 1991-11-14 | 1993-06-08 | 三ツ星ベルト株式会社 | Impact resistant automotive door trim |
| DE4140706A1 (en) * | 1991-12-10 | 1993-06-17 | Bayerische Motoren Werke Ag | Armrest on door or side wall of motor vehicle - has flexible structure, and moves into fastening surface when under pressure |
| DE4228626C2 (en) * | 1992-08-28 | 1999-05-20 | Audi Ag | Impact protection for side doors of motor vehicles |
| JPH06252753A (en) * | 1993-03-01 | 1994-09-09 | Matsushita Electric Ind Co Ltd | Pll frequency synthesizer |
| DE4334833C2 (en) * | 1993-10-13 | 1995-11-09 | Daimler Benz Ag | Fastening device |
| DE4439221C2 (en) * | 1994-11-03 | 1997-10-16 | Katzbach Kunststoffwerk Gmbh | Trim part, in particular door trim carrier, for a motor vehicle |
| DE19604014C2 (en) * | 1996-01-23 | 1999-07-15 | Petri Ag | Device for protecting occupants of a motor vehicle |
| DE19712266B4 (en) * | 1997-03-24 | 2007-10-25 | Lisa Dräxlmaier GmbH | Motor vehicle door |
| DE19912578B4 (en) * | 1999-03-19 | 2006-01-19 | F.S. Fehrer Gmbh & Co. Kg | Energy absorbing headrest |
| DE10212587A1 (en) * | 2002-03-19 | 2003-10-16 | Jenoptik Automatisierungstech | Internal functional and trim component for passenger cell of motor vehicles has predetermined breaking points to fracture during accidents, to increase passenger survival space |
| DE102005011162B4 (en) * | 2003-12-11 | 2008-12-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for a motor vehicle for occupant protection in the event of a collision-induced energy input directed at a motor vehicle door |
| JP5385015B2 (en) | 2009-06-05 | 2014-01-08 | トヨタ紡織株式会社 | Mounting structure for shock absorbers for vehicles |
| DE102020116065A1 (en) * | 2020-06-18 | 2021-04-22 | Audi Aktiengesellschaft | Reinforcement profile, in particular a shaft reinforcement for a base support of a vehicle body designed as a door panel, as well as a vehicle door with such a shaft reinforcement |
| CN113370768B (en) * | 2021-07-21 | 2023-02-21 | 中国第一汽车股份有限公司 | Door base plate and door |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783114A (en) * | 1987-11-05 | 1988-11-08 | General Motors Corporation | Vehicle door and arm rest |
-
1990
- 1990-11-19 GB GB9025088A patent/GB2238989A/en not_active Withdrawn
- 1990-11-29 JP JP2333410A patent/JPH03200420A/en active Pending
- 1990-12-03 CA CA 2031391 patent/CA2031391A1/en not_active Abandoned
- 1990-12-04 DE DE19904038659 patent/DE4038659A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783114A (en) * | 1987-11-05 | 1988-11-08 | General Motors Corporation | Vehicle door and arm rest |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993005989A1 (en) * | 1991-09-23 | 1993-04-01 | Davidson Textron Inc. | Side impact protection apparatus |
| US5141279A (en) * | 1991-09-23 | 1992-08-25 | Davidson Textron Inc. | Side impact protection apparatus |
| GB2271534A (en) * | 1992-10-15 | 1994-04-20 | Ford Motor Co | Energy absorbing vehicle door. |
| GB2271534B (en) * | 1992-10-15 | 1996-10-23 | Ford Motor Co | Energy absorbing vehicle door |
| GB2296222A (en) * | 1994-12-23 | 1996-06-26 | Ford Motor Co | A vehicle door with a load spreader between an intrusion beam and occupant padding |
| US5542738A (en) * | 1994-12-23 | 1996-08-06 | Ford Motor Company | Energy absorbing vehicle door with guard beam load distributor |
| GB2296222B (en) * | 1994-12-23 | 1998-07-29 | Ford Motor Co | Energy absorbing vehicle door |
| US5580116A (en) * | 1995-04-05 | 1996-12-03 | Ford Motor Company | Trim component having energy absorbing feature |
| DE19718062B4 (en) * | 1997-04-29 | 2005-02-24 | Ford Global Technologies, LLC (n.d.Ges.d. Staates Delaware), Dearborn | impact protection |
| EP0875424A2 (en) | 1997-04-29 | 1998-11-04 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Crash protection |
| DE19718062A1 (en) * | 1997-04-29 | 1998-11-05 | Ford Global Tech Inc | Impact-protector with energy-absorbent body for vehicles |
| DE19800476A1 (en) * | 1998-01-09 | 1999-07-15 | Ford Global Tech Inc | Impact-protector with energy-absorbent body for vehicles |
| WO2002081265A1 (en) * | 2001-04-05 | 2002-10-17 | Grupo Antolin-Ingenieria, S.A. | Geometrically modified inner vehicle panel capable of deforming under impact |
| US6863335B2 (en) | 2001-04-05 | 2005-03-08 | Grupo Autolin Ingenieria, S. A. | Geometrically modified inner vehicle panel capable of deforming under impact |
| US7794010B2 (en) | 2008-01-10 | 2010-09-14 | Toyota Boshoku Kabushiki Kaisha | Door trim |
| EP3305567A4 (en) * | 2015-05-27 | 2018-05-02 | Nissan Motor Co., Ltd. | Vehicle door structure |
| US10350974B2 (en) | 2015-05-27 | 2019-07-16 | Nissan Motor Co., Ltd. | Vehicle door structure |
| US10000112B2 (en) | 2016-09-08 | 2018-06-19 | Ford Global Technologies Llc | Pelvic load management using integrated collapsible features in door trim panel |
| CN107472180A (en) * | 2017-08-28 | 2017-12-15 | 国金汽车集团有限公司 | One kind prevents that passenger from colliding with rear side wall plaque |
| DE102020102608A1 (en) | 2020-02-03 | 2021-08-05 | Ford Global Technologies, Llc | Door assembly for a motor vehicle |
| DE102020102608B4 (en) | 2020-02-03 | 2022-03-17 | Ford Global Technologies, Llc | Door assembly for a motor vehicle |
| US11279211B2 (en) | 2020-02-03 | 2022-03-22 | Ford Global Technologies, Llc | Door assembly for a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2031391A1 (en) | 1991-06-05 |
| JPH03200420A (en) | 1991-09-02 |
| DE4038659A1 (en) | 1991-06-13 |
| GB9025088D0 (en) | 1991-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |