FR2880601A1 - Motor vehicle roof top box has twin-walled lower shell made by extrusion/blow-moulding and single-walled injection-moulded upper shell - Google Patents
Motor vehicle roof top box has twin-walled lower shell made by extrusion/blow-moulding and single-walled injection-moulded upper shell Download PDFInfo
- Publication number
- FR2880601A1 FR2880601A1 FR0500434A FR0500434A FR2880601A1 FR 2880601 A1 FR2880601 A1 FR 2880601A1 FR 0500434 A FR0500434 A FR 0500434A FR 0500434 A FR0500434 A FR 0500434A FR 2880601 A1 FR2880601 A1 FR 2880601A1
- Authority
- FR
- France
- Prior art keywords
- lower shell
- shell
- upper shell
- motor vehicle
- roof
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R9/00—Supplementary fittings on vehicle exterior for carrying loads, e.g. luggage, sports gear or the like
- B60R9/04—Carriers associated with vehicle roof
- B60R9/055—Enclosure-type carriers, e.g. containers, boxes
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/006—Joining parts moulded in separate cavities
- B29C45/0062—Joined by injection moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/065—HDPE, i.e. high density polyethylene
-
- 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
-
- 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
- B29L2031/7418—Suitcases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
PROCEDE DE FABRICATION D'UN COFFRE DE TOIT POURMETHOD FOR MANUFACTURING A ROOF CHEST FOR
VEHICULE AUTOMOBILE ET COFFRE DE TOIT AINSI OBTENU MOTOR VEHICLE AND ROOF ROOM SO OBTAINED
La présente invention concerne un procédé de fabrication d'un coffre de toit de véhicule automobile déterminant un volume de rangement supplémentaire. The present invention relates to a method of manufacturing a roof box of a motor vehicle determining an additional storage volume.
De tels coffres de toit sont généralement constitués par: une coque inférieure formant un fond, destinée à être solidarisée du toit du véhicule automobile; - une coque supérieure formant un couvercle, apte à coopérer par ses bords latéraux avec ceux correspondants de la coque inférieure ou fond; - des moyens de liaison articulés, disposés entre un côté latéral de la coque inférieure et un côté latéral correspondant de la coque supérieure; - des moyens de fermeture disposés entre une zone latérale de la coque inférieure et une zone latérale correspondante de la coque supérieure; - des moyens de fixation de la coque inférieure ou fond sur le toit du véhicule automobile. Such roof boxes are generally constituted by: a lower shell forming a bottom, intended to be secured to the roof of the motor vehicle; - An upper shell forming a lid, adapted to cooperate by its side edges with those corresponding to the lower shell or bottom; articulated connecting means, arranged between a lateral side of the lower shell and a corresponding lateral side of the upper shell; closure means disposed between a lateral zone of the lower shell and a corresponding lateral zone of the upper shell; - Fastening means of the lower shell or bottom on the roof of the motor vehicle.
Selon l'art antérieur, la coque inférieure constituant le fond et la coque supérieure constituant le couvercle sont l'une et l'autre obtenues par thermoformage. According to the prior art, the lower shell constituting the bottom and the upper shell constituting the lid are both obtained by thermoforming.
Ceci présente l'inconvénient majeur de présenter des faiblesses liées à des défauts de rigidité en flexion et en torsion. Ceci est d'autant plus vrai que 2880601 2 ces deux parties sont généralement de grandes dimensions. This has the major disadvantage of presenting weaknesses related to flexural and torsional stiffness defects. This is all the more true as 2880601 2 these two parts are generally large.
Selon une première phase de la démarche inventive, il a été pensé qu'il était suffisant de rigidifier suffisamment la coque inférieure ou fond, pour donner à la coque supérieure ou couvercle suffisamment de rigidité, même si elle continuait à être obtenue par injection, comme dans l'art antérieur. According to a first phase of the inventive step, it was thought that it was sufficient to sufficiently stiffen the bottom shell or bottom, to give the upper shell or cover enough rigidity, even if it continued to be obtained by injection, as in the prior art.
Ceci présente l'avantage de lui conserver un poids relativement faible, tout en donnant à l'ensemble une rigidité suffisante grâce à des modifications de réalisation de la coque inférieure ou fond. This has the advantage of maintaining a relatively low weight, while giving the assembly sufficient rigidity through changes in the realization of the lower shell or bottom.
On aurait pu penser obtenir un effet de rigidification de ce dernier en le réalisant, non pas par thermoformage mais par injection, en lui donnant donc une épaisseur voulue, voire à le renforcer par des nervures, mais cette solution n'a pas été retenue car elle conférerait à la coque inférieure un poids excessif et un prix de revient également élevé. One could have thought to obtain a stiffening effect of the latter by realizing it, not by thermoforming but by injection, thus giving it a desired thickness, or even strengthening it with ribs, but this solution was not retained because it would give the lower hull an excessive weight and a cost also high.
La présente invention a pour but de remédier aux différents inconvénients précités et connus dans les coffres de toit dont le fond et le couvercle sont obtenus par thermoformage, et ne permettant pas de créer des zones de renforcement du fait de la possibilité de n'obtenir qu'une simple épaisseur. The object of the present invention is to remedy the various aforementioned and known disadvantages in roof boxes whose bottom and cover are obtained by thermoforming, and which do not make it possible to create reinforcement zones because of the possibility of obtaining only a simple thickness.
A cet effet, l'invention concerne un procédé de fabrication d'un coffre de toit pour véhicule automobile, déterminant un volume de rangement supplémentaire, du type comprenant: 2880601 3 une coque inférieure formant un fond, destinée à être solidarisée du toit du véhicule automobile; - une coque supérieure formant un couvercle, apte à coopérer par ses bords latéraux avec ceux correspondants de la coque inférieure ou fond; - des moyens de liaison articulés, disposés entre un côté latéral de la coque inférieure et un côté latéral correspondant de la coque supérieure; des moyens de fermeture disposés entre une zone latérale de la coque inférieure et une zone latérale correspondante de la coque supérieure; des moyens de fixation de la coque inférieure ou fond sur le toit du véhicule automobile, caractérisé en ce que la coque inférieure ou fond est obtenue au cours d'une opération de moulage par extrusion-soufflage, générant une double paroi, apte à conférer audit fond des caractéristiques de rigidité, et en ce que la coque supérieure ou couvercle est obtenue par moulage par injection, générant une simple épaisseur, apte à conférer audit couvercle des caractéristiques de légèreté. To this end, the invention relates to a method of manufacturing a roof box for a motor vehicle, determining an additional storage volume, of the type comprising: a bottom shell forming a bottom, intended to be secured to the roof of the vehicle automobile; - An upper shell forming a lid, adapted to cooperate by its side edges with those corresponding to the lower shell or bottom; articulated connecting means, arranged between a lateral side of the lower shell and a corresponding lateral side of the upper shell; closure means disposed between a lateral zone of the lower shell and a corresponding lateral zone of the upper shell; means for fixing the lower shell or bottom on the roof of the motor vehicle, characterized in that the bottom shell or bottom is obtained during an extrusion blow molding operation, generating a double wall, able to confer audit bottom of the stiffness characteristics, and in that the upper shell or cover is obtained by injection molding, generating a single thickness, adapted to confer on said cover characteristics of lightness.
L'avantage qu'il y a à réaliser la coque inférieure ou fond par extrusion-soufflage réside dans le fait d'une rigidité accrue du fait de la double paroi ainsi obtenue, et ceci pour un poids identique à une réalisation par thermoformage, tout en offrant une meilleure tenue mécanique. The advantage of making the bottom shell or bottom by extrusion blow molding lies in the fact of increased rigidity due to the double wall thus obtained, and this for a weight identical to a thermoforming embodiment, all offering better mechanical strength.
La présente invention concerne également les caractéristiques qui ressortiront au cours de la description qui va suivre, et qui devront être considérées isolément ou selon toutes leurs combinaisons techniques possibles. The present invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
2880601 42880601 4
Cette description donnée à titre d'exemple non This description given as a non-standard example
limitatif, fera mieux comprendre comment l'invention peut être réalisée en référence aux dessins annexés sur lesquels: La figure 1 est une vue en perspective d'un coffre de toit obtenu selon le procédé de l'invention, en position d'ouverture. limiting, will better understand how the invention can be made with reference to the accompanying drawings in which: Figure 1 is a perspective view of a roof box obtained according to the method of the invention, in the open position.
La figure 2 est une vue en coupe partielle transversale du coffre de toit selon la figure 1, en position fermée, au niveau d'une des charnières arrière. Figure 2 is a partial cross-sectional view of the roof box according to Figure 1, in the closed position, at one of the rear hinges.
La figure 3 est une vue en coupe partielle transversale du coffre de toit selon la figure 1, en position fermée, au niveau de sa zone avant. Figure 3 is a partial cross-sectional view of the roof box according to Figure 1, in the closed position, at its front zone.
Le coffre de toit 1 désigné globalement sur les figures comprend, de manière connue: une coque inférieure 2 formant un fond, destinée à être solidarisée du toit du véhicule automobile; - une coque supérieure 3 formant un couvercle, apte à coopérer par ses bords latéraux 4 avec ceux correspondants 5 de la coque inférieure ou fond 2; - des moyens de liaison 6 articulés, disposés entre un côté latéral 5 de la coque inférieure 2 et un côté latéral 4 correspondant de la coque supérieure 3; des moyens de fermeture 7 disposés entre une zone latérale de la coque inférieure 2 et une zone latérale correspondante de la coque supérieure 3; des moyens de fixation 8 de la coque inférieure 2 ou fond sur le toit du véhicule automobile. The roof box 1 designated generally in the figures comprises, in known manner: a lower shell 2 forming a bottom, intended to be secured to the roof of the motor vehicle; - An upper shell 3 forming a lid, adapted to cooperate by its side edges 4 with the corresponding 5 of the lower shell or bottom 2; - Articulated connecting means 6, arranged between a lateral side 5 of the lower shell 2 and a corresponding lateral side 4 of the upper shell 3; closing means 7 disposed between a lateral zone of the lower shell 2 and a corresponding lateral zone of the upper shell 3; fastening means 8 of the lower shell 2 or bottom on the roof of the motor vehicle.
Selon l'invention, la coque inférieure ou fond 2 est obtenue au cours d'une opération de moulage par 2880601 5 extrusion-soufflage, générant une double paroi 2a, 2b, apte à conférer audit fond 2 des caractéristiques de rigidité, alors que la coque supérieure ou couvercle 3 est obtenue par moulage par injection, générant une simple épaisseur, apte à conférer audit couvercle 3 des caractéristiques de légèreté. According to the invention, the lower shell or bottom 2 is obtained during an extrusion-blow molding operation, generating a double wall 2a, 2b, capable of conferring rigidity characteristics on the bottom 2, whereas the upper shell or lid 3 is obtained by injection molding, generating a single thickness, able to confer on said lid 3 lightness characteristics.
Selon une autre caractéristique de l'invention, la coque inférieure ou fond 2 comporte des zones de rigidification constituées par des nervures longitudinales 9, obtenues par rapprochement et liaison effective des deux parois 2a, 2b du fond 2 dans des zones prédéterminées s'effectuant au cours de l'opération même d'extrusion-soufflage, de manière à conférer une rigidité supplémentaire à la double paroi 2a, 2b constituant ledit fond 2. According to another characteristic of the invention, the lower shell or bottom 2 comprises stiffening zones constituted by longitudinal ribs 9, obtained by bringing the two walls 2a, 2b of the bottom 2 closer together and in effective contact with one another in predetermined zones at during the same extrusion-blowing operation, so as to give additional rigidity to the double wall 2a, 2b constituting said bottom 2.
Comme on le voit particulièrement bien sur la figure 3, les nervures de rigidification 9 sont percées, dans des zones prédéterminées, par au moins deux trous 10 destinés à être traversés par des moyens de fixation constitués par les branches filetées 8a, 8b d'un étrier 8 en forme de U, aptes à coopérer avec des barres de toit (non représentées), et y être retenus positivement par l'intermédiaire d'écrous 11 vissés sur les branches filetées 8a, 8b, côté interne du fond 2. As can be seen particularly well in FIG. 3, the stiffening ribs 9 are pierced, in predetermined zones, by at least two holes 10 intended to be traversed by fixing means constituted by the threaded branches 8a, 8b of a U-shaped stirrup 8, adapted to cooperate with roof bars (not shown), and to be positively retained there by means of nuts 11 screwed onto the threaded branches 8a, 8b, inner side of the bottom 2.
De manière à rigidifier encore davantage l'ensemble, des barrettes intérieures 12 sont interposées entre les nervures de rigidification 9 et les écrous 11. In order to further stiffen the assembly, inner bars 12 are interposed between the stiffening ribs 9 and the nuts 11.
Préférentiellement, la matière plastique utilisée lors de l'extrusion de la coque inférieure 2 ou fond est un polyéthylène haute densité qui, associé à la 2880601 6 double paroi 2a, 2b obtenue par extrusion-soufflage et aux nervures 9, augmente la rigidité dudit fond 2. Preferably, the plastic material used during the extrusion of the lower shell 2 or bottom is a high density polyethylene which, associated with the double wall 28a, wall 2a, 2b obtained by extrusion blow molding and the ribs 9, increases the rigidity of said bottom. 2.
De la même manière, préférentiellement, la matière plastique utilisée lors de l'injection de la coque supérieure 3 ou couvercle est un polypropylène. In the same way, preferentially, the plastic material used during the injection of the upper shell 3 or lid is a polypropylene.
Par ailleurs, les moyens de liaison articulés disposés entre un côté latéral 5 du fond 2 et un côté latéral 4 du couvercle 3 sont constitués par des charnières 6 obtenues distinctement par injection d'un polypropylène, et rapportés pour partie sur le fond 2 et pour partie sur le couvercle 3, au niveau de leurs bords périphériques, en regard l'un de l'autre à l'arrière du coffre de toit. Furthermore, the hinged connecting means disposed between a lateral side 5 of the bottom 2 and a lateral side 4 of the cover 3 are constituted by hinges 6 obtained separately by injection of a polypropylene, and reported partly on the bottom 2 and for part on the cover 3, at their peripheral edges, facing each other at the rear of the roof box.
Bien entendu, l'invention concerne le procédé pour l'obtention d'un coffre de toit tel que défini ci-dessus, mais également le coffre de toit proprement dit. Of course, the invention relates to the method for obtaining a roof box as defined above, but also the roof box itself.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500434A FR2880601A1 (en) | 2005-01-10 | 2005-01-10 | Motor vehicle roof top box has twin-walled lower shell made by extrusion/blow-moulding and single-walled injection-moulded upper shell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500434A FR2880601A1 (en) | 2005-01-10 | 2005-01-10 | Motor vehicle roof top box has twin-walled lower shell made by extrusion/blow-moulding and single-walled injection-moulded upper shell |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2880601A1 true FR2880601A1 (en) | 2006-07-14 |
Family
ID=34954727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0500434A Withdrawn FR2880601A1 (en) | 2005-01-10 | 2005-01-10 | Motor vehicle roof top box has twin-walled lower shell made by extrusion/blow-moulding and single-walled injection-moulded upper shell |
Country Status (1)
Country | Link |
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FR (1) | FR2880601A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVR20100174A1 (en) * | 2010-09-13 | 2012-03-14 | Btek S R L | BOX STRUCTURE FOR VEHICLES |
EP2705985A1 (en) * | 2012-09-10 | 2014-03-12 | Thule Sweden AB | Roof box for a vehicle |
US9290131B2 (en) | 2012-07-30 | 2016-03-22 | Yakima Products, Inc. | Carrier for a vehicle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814810A1 (en) * | 1968-12-14 | 1970-07-09 | Michael Bamberger | Ski case |
US3565305A (en) * | 1969-05-27 | 1971-02-23 | Paul Belokin Jr | Car carrier means |
-
2005
- 2005-01-10 FR FR0500434A patent/FR2880601A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814810A1 (en) * | 1968-12-14 | 1970-07-09 | Michael Bamberger | Ski case |
US3565305A (en) * | 1969-05-27 | 1971-02-23 | Paul Belokin Jr | Car carrier means |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVR20100174A1 (en) * | 2010-09-13 | 2012-03-14 | Btek S R L | BOX STRUCTURE FOR VEHICLES |
US9290131B2 (en) | 2012-07-30 | 2016-03-22 | Yakima Products, Inc. | Carrier for a vehicle |
EP2705985A1 (en) * | 2012-09-10 | 2014-03-12 | Thule Sweden AB | Roof box for a vehicle |
WO2014037513A1 (en) * | 2012-09-10 | 2014-03-13 | Thule Sweden Ab | Roof box for a vehicle |
CN104602965A (en) * | 2012-09-10 | 2015-05-06 | 北部瑞典公司 | Roof box for a vehicle |
US9688210B2 (en) | 2012-09-10 | 2017-06-27 | Thule Sweden Ab | Roof box for a vehicle |
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