EP4025463A1 - Lower trim shell for a steering column of a motor vehicle, and associated manufacturing method - Google Patents
Lower trim shell for a steering column of a motor vehicle, and associated manufacturing methodInfo
- Publication number
- EP4025463A1 EP4025463A1 EP20736346.6A EP20736346A EP4025463A1 EP 4025463 A1 EP4025463 A1 EP 4025463A1 EP 20736346 A EP20736346 A EP 20736346A EP 4025463 A1 EP4025463 A1 EP 4025463A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- driver
- knees
- steering column
- protecting
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 210000003127 knee Anatomy 0.000 claims abstract description 35
- 239000004743 Polypropylene Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- B60R21/04—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1266—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being completely encapsulated, e.g. for packaging purposes or as reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1285—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being foamed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
-
- 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
- B60R21/05—Padded linings for the vehicle interior ; Energy absorbing structures associated with padded or non-padded linings associated with the steering wheel, steering hand lever or steering column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
Definitions
- the present invention relates, in general, to the front part of a motor vehicle in which the steering column extends and relates more particularly to a covering shell for a steering column.
- the invention relates to a lower trim shell trim shell for a steering column of a motor vehicle and an associated manufacturing process.
- the steering column present on all motor vehicles, is a mechanical element connecting the steering wheel to the rack and allows the driver to transmit the rotational movement to the latter for the actuation of a steering bar for steering the driving wheels.
- Figure 1 illustrates the structure under the steering wheel (not shown) of a front part of a motor vehicle, according to the prior art.
- the steering column 1 is integrated into the front part of the vehicle and a cover shell 2 extends on either side of the steering column.
- the trim shell 2 comprises a lower trim shell 3 extending along the steering column, under the steering wheel, facing the driver's seat, and an upper trim shell 4 diametrically opposed relative to the column of management.
- a protective padding element or block 5 is inserted between the lower cover shell 3 and structural elements 6 and 7.
- the manufacture of the protective padding block 5 in addition to the lower covering shell 3 extends and makes the step of manufacturing more expensive. the cover shell 2.
- the aim of the invention is therefore to remedy these drawbacks and to provide protection that is simple and inexpensive to manufacture, intended to prevent damage related to impacts between the knees of a driver and the cover shell. a steering column.
- a lower covering shell of a covering shell for the steering column of a motor vehicle intended to be placed opposite the knees of a driver installed in the position of pipe, comprising means for protecting the driver's knees in the event of impact of the driver's knees with the cover shell.
- driver's knee protection means and the lower trim shell are configured so that they form a single piece.
- the driver's knee protection means and the lower covering shell are formed from the same material so that they form a single, one-piece structure.
- the lower covering shell is formed at least in part from expanded polypropylene EPP.
- the lower covering shell can be entirely formed from EPP expanded polypropylene.
- the lower covering shell can be configured to receive one or more inserts intended to structure the covering shell.
- the invention also relates to a cover shell for the steering column of a motor vehicle, comprising a lower cover shell as described above.
- a covering selected from leather, textile or polyvinyl chloride is disposed on the outer surface of the lower trim shell intended to be disposed opposite the driver's knees.
- the invention also relates to a motor vehicle comprising a steering column and a covering shell for the steering column.
- the cover shell has a lower cover shell as described above.
- the invention also relates to a method of manufacturing a lower cover shell for a cover shell for a steering column of a mobile vehicle.
- the manufacturing process comprises a step of forming a single piece forming the lower covering shell and a means for protecting the knees of the driver.
- the step of forming the part forming the lower covering shell and the means for protecting the driver's knees can be obtained by molding.
- the step of forming the part forming the lower covering shell and the driver's knee protection means is obtained by molding expanded polypropylene.
- FIG.l shows the structure of a front part of a motor vehicle comprising a steering column and a cover shell according to the prior art.
- FIG.2 illustrates the structure of a front part of a motor vehicle comprising a steering column and a trim shell according to the invention.
- Figure 2 illustrates the structure of a front part of a motor vehicle comprising a steering column 8 and a trim shell 9 according to one embodiment of the invention.
- the covering shell 9 comprises a lower covering shell 10 and an upper covering shell 11. Considering the Z axis, the lower covering shell 10 is arranged at the bottom and the covering shell upper 11 is disposed at the top of the axis.
- the lower trim shell 10 extends along the steering column 8 and is intended to be disposed opposite the knees of a driver installed in the driving position. It is arranged in an area under the steering wheel, facing the driver's seat (not shown).
- the upper trim shell 11 is arranged so as to be diametrically opposed to the upper trim shell 11 relative to the steering column 8.
- the lower trim shell 10 includes a means of protecting the driver's knees in the event of impact of the driver's knees with the trim shell.
- driver's knee protection means and the lower cover shell are configured so that they form a single piece 10.
- the means of knee protection is thus an integral part of the lower shell
- the lower covering shell 10 is formed at least in part of expanded polymer material forming an effective means of protecting the knees of the driver in the event of impact of the knees with the covering shell or even with the column of steering in the event of a particularly violent impact.
- expanded polypropylene EPP
- EPP expanded polypropylene
- the driver's knee protection means and the lower cover shell are formed of the same material so that they form a single one-piece structure 10.
- the means of protection and the lower covering shell are combined.
- the very structure of the lower trim shell 10 thus plays a role of protecting the driver's knees.
- the lower cover shell 10 is entirely formed of expanded polypropylene EPP.
- the expanded polypropylene material makes it possible to obtain a lower covering shell 10 which is sufficiently rigid to form a part having both high impact resistance and a structuring function of the covering shell 9.
- the lower covering shell 10 can be configured to receive one or more inserts 12, 13 intended to structure the covering shell 9.
- a coating may be disposed on the outer surface 15 of the lower trim shell 10 intended to be arranged vis-à-vis the knees of the driver in order to participate in the external appearance of the lower trim shell 10 and its integrity.
- the coating can be chosen from the following materials: leather, textile or polyvinyl chloride.
- the lower covering shell 10 is advantageously formed by molding, and in particular in the example illustrated, by molding of expanded polypropylene.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Steering Controls (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1909814A FR3100499A1 (en) | 2019-09-06 | 2019-09-06 | Lower cover for the steering column of a motor vehicle and associated manufacturing process |
PCT/EP2020/069149 WO2021043467A1 (en) | 2019-09-06 | 2020-07-07 | Lower trim shell for a steering column of a motor vehicle, and associated manufacturing method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4025463A1 true EP4025463A1 (en) | 2022-07-13 |
Family
ID=69172913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20736346.6A Pending EP4025463A1 (en) | 2019-09-06 | 2020-07-07 | Lower trim shell for a steering column of a motor vehicle, and associated manufacturing method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4025463A1 (en) |
FR (1) | FR3100499A1 (en) |
WO (1) | WO2021043467A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6609727B2 (en) * | 2001-08-06 | 2003-08-26 | General Motors Corporation | Energy absorbing knee bolster assembly |
FR2857646B1 (en) * | 2003-07-17 | 2006-02-03 | Faurecia Interieur Ind | DASHBOARD FOR ABSORBING DRIVER ENERGY |
JP4152914B2 (en) * | 2004-03-29 | 2008-09-17 | トヨタ自動車株式会社 | Knee protector |
DE102004056148A1 (en) * | 2004-11-20 | 2006-05-24 | Sas Autosystemtechnik Gmbh & Co. Kg | Composite component and method for producing a composite component |
FR3057223B1 (en) * | 2016-10-11 | 2018-12-07 | Treves Products, Services & Innovation | INTERIOR TRIM COMPONENT OF A MOTOR VEHICLE |
-
2019
- 2019-09-06 FR FR1909814A patent/FR3100499A1/en active Pending
-
2020
- 2020-07-07 WO PCT/EP2020/069149 patent/WO2021043467A1/en unknown
- 2020-07-07 EP EP20736346.6A patent/EP4025463A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3100499A1 (en) | 2021-03-12 |
WO2021043467A1 (en) | 2021-03-11 |
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Legal Events
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17P | Request for examination filed |
Effective date: 20220215 |
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DAX | Request for extension of the european patent (deleted) | ||
P01 | Opt-out of the competence of the unified patent court (upc) registered |
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17Q | First examination report despatched |
Effective date: 20240402 |