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 method

Info

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
Application number
EP20736346.6A
Other languages
German (de)
French (fr)
Inventor
Claude Chapuis
Corre JEAN-MARIE
Jean-Michel Fabre
Thierry Marceau
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.)
Renault SAS
Original Assignee
Renault 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 Renault SAS filed Critical Renault SAS
Publication of EP4025463A1 publication Critical patent/EP4025463A1/en
Pending 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
    • B60R21/04—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

Lower trim shell of a trim shell (9) for a steering column (8) of a motor vehicle, intended to be disposed facing the knees of a driver who is in a driving position, comprising a means for protecting the driver's knees in the event of an impact of the driver's knees with the trim shell (9), characterized in that said means for protecting the driver's knees and the lower trim shell (10) are configured so as to form one piece (10).

Description

Description Description
Titre de l'invention : Coquille d’habillage inférieure pour colonne de direction d’un véhicule automobile et procédé de fabrication associéTitle of the invention: Lower cover for the steering column of a motor vehicle and associated manufacturing process
[0001] La présente invention concerne, de manière générale, la partie avant d’un véhicule automobile dans laquelle s’étend la colonne de direction et se rapporte plus particu lièrement à une coquille d’habillage pour colonne de direction. [0001] 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.
[0002] Plus précisément, l’invention se rapporte à une coquille d’habillage inférieure de coquille d’habillage pour une colonne de direction d’un véhicule automobile et un procédé de fabrication associé. [0002] More specifically, the invention relates to a lower trim shell trim shell for a steering column of a motor vehicle and an associated manufacturing process.
[0003] La colonne de direction, présente sur tous les véhicules automobiles, est un élément mécanique reliant le volant de direction à la crémaillère et permet au conducteur de transmettre le mouvement de rotation à cette dernière pour l’actionnement d’une barre de direction pour le braquage des roues motrices. 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.
[0004] De ce fait, lorsque le conducteur est installé en position de conduite, la partie basse de son corps et notamment ses genoux sont positionnés sous le volant, en regard de la colonne de direction. [0004] Therefore, when the driver is installed in the driving position, the lower part of his body and in particular his knees are positioned under the steering wheel, facing the steering column.
[0005] La figure 1 illustre la structure sous le volant de direction (non représenté) d’une partie avant d’un véhicule automobile, selon l’art antérieur. [0005] Figure 1 illustrates the structure under the steering wheel (not shown) of a front part of a motor vehicle, according to the prior art.
[0006] Comme cela est représenté, la colonne de direction 1 est intégrée dans la partie avant du véhicule et une coquille d’habillage 2 s’étend de part et d’autre de la colonne de direction. La coquille d’habillage 2 comporte une coquille d’habillage inférieure 3 s’étendant le long de la colonne de direction, sous le volant, en regard du siège conducteur, et une coquille d’habillage supérieure 4 diamétralement opposée par rapport à la colonne de direction. [0006] As shown, 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.
[0007] Lors d’une collision du véhicule avec un élément extérieur, les genoux du conducteur se trouvent être la première partie du corps susceptible de venir frapper contre la coquille d’habillage voire, selon l’intensité du choc, contre la colonne de direction. Compte tenu de la rigidité de la colonne et de sa forme allongée, les dommages pour le conducteur peuvent être considérables. [0007] During a collision of the vehicle with an external element, the driver's knees are found to be the first part of the body liable to strike against the covering shell or, depending on the intensity of the impact, against the column of direction. Considering the rigidity of the column and its elongated shape, the damage to the driver can be considerable.
[0008] Pour cette raison, il est indispensable qu’une protection limitant les risques de blessures du conducteur soit prévue dans la structure avant du véhicule. [0008] For this reason, it is essential that protection limiting the risk of driver injury be provided in the front structure of the vehicle.
[0009] Classiquement, comme on peut le voir sur la figure 1, un élément ou bloc de rem bourrage de protection 5 est inséré entre la coquille d’habillage inférieure 3 et des éléments de structure 6 et 7. Conventionally, as can be seen in Figure 1, a protective padding element or block 5 is inserted between the lower cover shell 3 and structural elements 6 and 7.
[0010] Cependant, la fabrication du bloc de rembourrage de protection 5 en plus de la coquille d’habillage inférieure 3 rallonge et rend plus coûteuse l’étape de fabrication de la coquille d’habillage 2. However, 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.
[0011] La mise en place du bloc de rembourrage de protection complexifie également l’installation de la coquille d’habillage autour de la colonne de direction 1 et nécessite la réalisation de plusieurs outillages impliquant un coût plus élevé. [0011] The installation of the protective padding block also complicates the installation of the cover shell around the steering column 1 and requires the production of several tools involving a higher cost.
[0012] L’invention a donc pour but de remédier à ces inconvénients et de proposer une protection simple et peu coûteuse à fabriquer, destinée à prévenir les dommages liés aux chocs entre les genoux d’un conducteur et la coquille d’habillage d’une colonne de direction. [0012] 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.
[0013] Il est donc proposé une coquille d’habillage inférieure d’une coquille d’habillage pour colonne de direction d’un véhicule automobile, destinée à être disposée en vis- à-vis des genoux d’un conducteur installé en position de conduite, comprenant un moyen de protection des genoux du conducteur en cas de choc des genoux du conducteur avec la coquille d’habillage. [0013] There is therefore proposed 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.
[0014] En outre, ledit moyen de protection des genoux du conducteur et la coquille d’habillage inférieure sont configurés de sorte qu’ils forment une seule pièce. [0014] Further, said driver's knee protection means and the lower trim shell are configured so that they form a single piece.
[0015] De préférence, le moyen de protection des genoux du conducteur et la coquille d’habillage inférieure sont formés d’un même matériau de sorte qu’ils forment une structure unique monobloc. Preferably, 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.
[0016] Selon un mode de réalisation, la coquille d’habillage in férieure est formée au moins en partie de polypropylène expansé EPP. [0016] According to one embodiment, the lower covering shell is formed at least in part from expanded polypropylene EPP.
[0017] Selon une caractéristique, la coquille d’habillage inférieure peut être entièrement formée en polypropylène expansé EPP. [0017] According to one characteristic, the lower covering shell can be entirely formed from EPP expanded polypropylene.
[0018] Avantageusement, la coquille d’habillage inférieure peut être configurée pour recevoir un ou plusieurs inserts destinés à structurer la coquille d’habillage. Advantageously, the lower covering shell can be configured to receive one or more inserts intended to structure the covering shell.
[0019] L’invention se rapporte aussi à une coquille d’habillage pour colonne de direction d’un véhicule automobile, comprenant une coquille d’habillage inférieure comme décrite précédemment. Un revêtement choisi parmi du cuir, du textile ou du poly- chlorure de vinyle est disposé sur la surface extérieure de la coquille d’habillage in férieure destinée à être disposée en vis-à-vis des genoux du conducteur. 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.
[0020] L’invention concerne également un véhicule automobile comprenant une colonne de direction et une coquille d’habillage de la colonne de direction. La coquille d’habillage comporte une coquille d’habillage inférieure telle que décrite précédemment. [0020] 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.
[0021] L’invention concerne aussi un procédé de fabrication d’une coquille d’habillage in férieure de coquille d’habillage pour une colonne de direction d’un véhicule au tomobile. [0021] 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.
[0022] En outre, le procédé de fabrication comprend une étape de formation d’une seule pièce formant la coquille d’habillage inférieure et un moyen de protection des genoux du conducteur. [0023] Avantageusement, l’étape de formation de la pièce formant la coquille d’habillage in férieure et le moyen de protection des genoux du conducteur peut être obtenue par moulage. [0022] In addition, 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. Advantageously, 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.
[0024] De préférence, l’étape de formation de la pièce formant la coquille d’habillage in férieure et le moyen de protection des genoux du conducteur est obtenue par moulage de polypropylène expansé. Preferably, the step of forming the part forming the lower covering shell and the driver's knee protection means is obtained by molding expanded polypropylene.
[0025] D’autres buts, avantages et caractéristiques ressortiront de la description qui va suivre, donnée à titre purement illustratif et faite en référence aux dessins annexés sur lesquels : [0025] Other aims, advantages and characteristics will emerge from the description which follows, given purely by way of illustration and made with reference to the accompanying drawings in which:
[0026] [fig.l] représente la structure d’une partie avant d’un véhicule automobile comportant une colonne de direction et une coquille d’habillage selon l’art antérieur. [0026] [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.
[0027] [fig.2] illustre la structure d’une partie avant d’un véhicule automobile comportant une colonne de direction et une coquille d’habillage selon l’invention. [0027] [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.
[0028] Dans la suite de la description, les termes « bas » et « haut » s’entendent par rapport au repère orthogonal usuel des véhicules automobiles, représenté sur les figures 1 et 2, et comprenant : In the remainder of the description, the terms "low" and "high" are understood to mean relative to the usual orthogonal reference frame for motor vehicles, shown in Figures 1 and 2, and comprising:
[0029] - un axe longitudinal X, horizontal et dirigé de l’avant vers l’arrière du véhicule ; - a longitudinal axis X, horizontal and directed from the front to the rear of the vehicle;
[0030] - un axe transversal Y, horizontal, perpendiculaire à l’axe X et dirigé de la droite à la gauche du véhicule se déplaçant vers l’avant ; - a transverse Y axis, horizontal, perpendicular to the X axis and directed from the right to the left of the vehicle moving forward;
[0031] - un axe Z, orthogonal aux axes X et Y et vertical dirigé de bas en haut. - A Z axis, orthogonal to the X and Y axes and vertical directed from bottom to top.
[0032] La figure 2 illustre la structure d’une partie avant d’un véhicule automobile comportant une colonne de direction 8 et une coquille d’habillage 9 selon un mode de réalisation de l’invention. [0032] 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.
[0033] La coquille d’habillage 9 comporte une coquille d’habillage inférieure 10 et une coquille d’habillage supérieure 11. Considérant l’axe Z, la coquille d’habillage in férieure 10 est disposée en bas et la coquille d’habillage supérieure 11 est disposée en haut de l’axe. 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.
[0034] D’une part, la coquille d’habillage inférieure 10 s’étend le long de la colonne de direction 8 et est destinée à être disposée en vis-à-vis des genoux d’un conducteur installé en position de conduite. Elle est disposée dans une zone sous le volant, en regard du siège conducteur (non représentés). On the one hand, 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).
[0035] D’autre part, la coquille d’habillage supérieure 11 est disposée de façon à être diamé tralement opposée à la coquille d’habillage supérieure 11 par rapport à la colonne de direction 8. On the other hand, 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.
[0036] La coquille d’habillage inférieure 10 comprend un moyen de protection des genoux du conducteur en cas de choc des genoux du conducteur avec la coquille d’habillage. [0036] 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.
[0037] En outre, le moyen de protection des genoux du conducteur et la coquille d’habillage inférieure sont configurés de sorte qu’ils forment une seule pièce 10. Le moyen de protection des genoux fait ainsi partie intégrante de la coquille d’habillage inférieureIn addition, the 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
10. 10.
[0038] De préférence, la coquille d’habillage inférieure 10 est formée au moins en partie de matériau polymère expansé formant un moyen de protection efficace des genoux du conducteur en cas de choc des genoux avec la coquille d’habillage voire avec la colonne de direction en cas de choc particulièrement violent. Preferably, 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.
[0039] De préférence, on choisira le polypropylène expansé (EPP) particulièrement adapté pour l’absorption des chocs. Preferably, expanded polypropylene (EPP) will be chosen which is particularly suitable for shock absorption.
[0040] Dans l’exemple illustré sur la figure 2, le moyen de protection des genoux du conducteur et la coquille d’habillage inférieure sont formés d’un même matériau de sorte qu’ils forment une structure unique monobloc 10. En d’ autres termes, le moyen de protection et la coquille d’habillage inférieure sont confondus. La structure même de la coquille d’habillage inférieure 10 joue ainsi un rôle de protection des genoux du conducteur. In the example illustrated in Figure 2, 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. In d ' In other words, 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.
[0041] Selon cet exemple, la coquille d’habillage inférieure 10 est entièrement formée en polypropylène expansé EPP. [0041] According to this example, the lower cover shell 10 is entirely formed of expanded polypropylene EPP.
[0042] Le matériau polypropylène expansé permet d’obtenir une coquille d’habillage in férieure 10 suffisamment rigide pour former une pièce ayant à la fois une tenue aux chocs importante et une fonction structurante de la coquille d’habillage 9. [0042] 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.
[0043] Bien entendu, on pourra prévoir que la coquille d’habillage inférieure 10 soit configurée pour recevoir un ou plusieurs inserts 12, 13 destinés à structurer la coquille d’habillage 9. Of course, provision can be made for the lower covering shell 10 to be configured to receive one or more inserts 12, 13 intended to structure the covering shell 9.
[0044] Un revêtement peut être disposé sur la surface extérieure 15 de la coquille d’habillage inférieure 10 destinée à être disposée en vis-à-vis des genoux du conducteur afin de participer à l’aspect extérieur de la coquille d’habillage inférieure 10 et son intégrité. 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.
[0045] Par exemple, le revêtement peut être choisi parmi les matériaux suivants : du cuir, du textile ou du polychlorure de vinyle. For example, the coating can be chosen from the following materials: leather, textile or polyvinyl chloride.
[0046] La coquille d’habillage inférieure 10 est avantageusement formée par moulage, et notamment dans l’exemple illustré, par moulage de polypropylène expansé. The lower covering shell 10 is advantageously formed by molding, and in particular in the example illustrated, by molding of expanded polypropylene.

Claims

Revendications Claims
[Revendication 1] Coquille d’habillage inférieure d’une coquille d’habillage (9) pour colonne de direction (8) d’un véhicule automobile, destinée à être disposée en vis-à-vis des genoux d’un conducteur installé en position de conduite, comprenant un moyen de protection des genoux du conducteur en cas de choc des genoux du conducteur avec la coquille d’habillage (9), caractérisée en ce que ledit moyen de protection des genoux du conducteur et la coquille d’habillage inférieure (10) sont configurés de sorte qu’ils forment une seule pièce (10). [Claim 1] Lower cover shell of a cover shell (9) for the steering column (8) of a motor vehicle, intended to be placed opposite the knees of a driver installed in driving position, comprising means for protecting the driver's knees in the event of impact of the driver's knees with the covering shell (9), characterized in that said means for protecting the driver's knees and the lower covering shell (10) are configured so that they form a single piece (10).
[Revendication 2] Coquille d’ habillage inférieure selon la revendication 1, caractérisée en ce que le moyen de protection des genoux du conducteur et la coquille d’habillage inférieure (10) sont formés d’un même matériau de sorte qu’ils forment une structure unique monobloc (10). [Claim 2] Lower covering shell according to claim 1, characterized in that the means for protecting the knees of the driver and the lower covering shell (10) are formed from the same material so that they form a unique one-piece structure (10).
[Revendication 3] Coquille d’habillage inférieure selon la revendication 1, caractérisée en ce qu’elle est formée au moins en partie de polypropylène expansé EPP. [Claim 3] A lower cover shell according to claim 1, characterized in that it is formed at least in part from expanded polypropylene EPP.
[Revendication 4] Coquille d’habillage inférieure selon la revendication 2, caractérisée en ce qu’elle est entièrement formée en polypropylène expansé EPP. [Claim 4] A lower cover shell according to claim 2, characterized in that it is entirely formed of EPP expanded polypropylene.
[Revendication 5] Coquille d’habillage inférieure selon l’une quelconque des reven dications précédentes, caractérisée en ce qu’elle est configurée pour recevoir un ou plusieurs inserts (12, 13) destinés à structurer la coquille d’habillage (9). [Claim 5] Lower cover shell according to any one of the preceding claims, characterized in that it is configured to receive one or more inserts (12, 13) for structuring the cover shell (9).
[Revendication 6] Coquille d’habillage pour colonne de direction (8) d’un véhicule au tomobile, comprenant une coquille d’habillage inférieure (10) selon l’une quelconque des revendications précédentes, caractérisée en ce qu’un revêtement (14) choisi parmi du cuir, du textile ou du poly- chlorure de vinyle est disposé sur la surface extérieure (15) de la coquille d’habillage inférieure (10) destinée à être disposée en vis-à-vis des genoux du conducteur. [Claim 6] Trim shell for the steering column (8) of a mobile vehicle, comprising a lower trim shell (10) according to any one of the preceding claims, characterized in that a coating (14 ) chosen from among leather, textile or polyvinyl chloride is arranged on the outer surface (15) of the lower trim shell (10) intended to be placed opposite the knees of the driver.
[Revendication 7] Véhicule automobile comprenant une colonne de direction (8) et une coquille d’habillage (9) de la colonne de direction (8), caractérisé en ce que la coquille d’habillage (9) comporte une coquille d’habillage in férieure (10) selon l’une quelconque des revendications précédentes.[Claim 7] Motor vehicle comprising a steering column (8) and a covering shell (9) of the steering column (8), characterized in that the covering shell (9) comprises a covering shell lower (10) according to any one of the preceding claims.
[Revendication 8] Procédé de fabrication d’une coquille d’habillage inférieure (10) de coquille d’habillage (9) pour une colonne de direction (8) d’un véhicule automobile, caractérisé en ce qu’il comprend une étape de formation d’une seule pièce (10) formant la coquille d’habillage inférieure et un moyen de protection des genoux du conducteur. [Claim 8] A method of manufacturing a lower trim shell (10) of a trim shell (9) for a steering column (8) of a motor vehicle, characterized in that it comprises a step of forming a single piece (10) forming the lower trim shell and a means of protecting the knees of the driver.
[Revendication 9] Procédé de fabrication selon la revendication 8, caractérisé en ce que l’étape de formation de la pièce (10) formant la coquille d’habillage in férieure et le moyen de protection des genoux du conducteur est obtenue par moulage. [Claim 9] The manufacturing method according to claim 8, characterized in that the step of forming the part (10) forming the lower covering shell and the means for protecting the driver's knees is obtained by molding.
[Revendication 10] Procédé de fabrication selon la revendication 9, caractérisé en ce que l’étape de formation de la pièce (10) formant la coquille d’habillage in férieure et le moyen de protection des genoux du conducteur est obtenue par moulage de polypropylène expansé. [Claim 10] The manufacturing method according to claim 9, characterized in that the step of forming the part (10) forming the lower covering shell and the means for protecting the driver's knees is obtained by molding of polypropylene expanded.
EP20736346.6A 2019-09-06 2020-07-07 Lower trim shell for a steering column of a motor vehicle, and associated manufacturing method Pending EP4025463A1 (en)

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

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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

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EP (1) EP4025463A1 (en)
FR (1) FR3100499A1 (en)
WO (1) WO2021043467A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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

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WO2021043467A1 (en) 2021-03-11

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