FR2538320A1

FR2538320A1 - Arrangements concerning devices for heating the passenger compartment of a motor vehicle.

Info

Publication number: FR2538320A1
Application number: FR8320765A
Authority: FR
Inventors: Theo Becke
Original assignee: Behr GmbH and Co KG
Current assignee: Mahle Behr GmbH and Co KG
Priority date: 1982-12-28
Filing date: 1983-12-26
Publication date: 1984-06-29
Also published as: DE8236581U1; FR2538320B1

Abstract

Motor vehicle comprising an engine compartment and a passenger compartment separated by a dashboard which is traversed by several heating tubes mounted with spacing and having sealing means with respect to an opening in the dashboard. A common opening in the dashboard is traversed by several heating tubes 3, 4, 5 which, in the vicinity of the opening, are held by a brace 9 equipped with shells 6, 7, 8 for housing the tubes 3, 4, 5, filling the free space between the said tubes and of which the external faces 10, 11, 12, arranged along the direction of the said tubes, form, with the portions of the external surfaces of the latter, a circular bearing surface, a common sealing joint 13 being arranged between the said bearing surface and the edge of the opening.

Description

La présente invention concerne un véhicule automobile comprenant un compartiment moteur et un habitacle séparés par un tablier que traversent plusieurs tubes de chauffage montés avec écartement et présentant des moyens d'étanchéité par rapport à une ouverture du tablier. The present invention relates to a motor vehicle comprising an engine compartment and a passenger compartment separated by an apron through which several heating tubes mounted with spacing and having sealing means relative to an opening of the apron.

Dans les véhicules connus, les tubes de chauffage posés entre un compartiment moteur et l'habitacle à travers un tablier passent chacun dans une ouverture distincte de ce dernier, et présentent des moyens d'étanchéité séparés. Les moyens d'étanchéité interdisent la pénétration dans l'habitacle de l'air du compartiment moiteur, qui se trouve sous une pression augmentée aux grandes vitesses de marche. In known vehicles, the heating tubes placed between an engine compartment and the passenger compartment through an apron each pass through a separate opening from the latter, and have separate sealing means. The sealing means prevent the penetration into the passenger compartment of the air from the wetness compartment, which is under increased pressure at high operating speeds.

t'invention vise à simplifier et à réduire les coûts de la pose des tubes de chauffage d'un véhicule automobile du type précité, tout en produisant une étanchéité sûre. Selon une caractéristique essentielle de l'invention, une ouverture commune du tablier est traversée par plusieurs tubes de chauffage qui, au voisinage de l'ouverture, sont maintenus par une entretoise munie de coquilles de logement des tubes de chauffage, remplissant I'espace libre entre lesdits tubes et dont les faces extérieures disposées suivant la direction desdits tubes forment avec des parties des surfaces extérieures de ce dernier une portée circulaire, un joint d'étanchéité commun étant disposé entre ladite portée et le bord de l'ouverture. The invention aims to simplify and reduce the costs of installing the heating tubes of a motor vehicle of the aforementioned type, while producing a secure seal. According to an essential characteristic of the invention, a common opening of the bulkhead is crossed by several heating tubes which, in the vicinity of the opening, are held by a spacer provided with shells for housing the heating tubes, filling the free space between said tubes and whose outer faces arranged in the direction of said tubes form with parts of the outer surfaces of the latter a circular bearing, a common seal being disposed between said bearing and the edge of the opening.

Cette réalisation simplifie la construction d'ensemble, car une seule ouverture doit être prévue avec étanchéité sur le tablier. This embodiment simplifies the overall construction, since a single opening must be provided with sealing on the deck.

Un écartement sûr et précis des tubes de chauffage est en outre obtenu.A safe and precise spacing of the heating tubes is also obtained.

Selon une autre caractéristique de l'invention, l'entretoise est réalisée dans un matériau élastique. I1 est ainsi possible d'introduire les tubes dans les coquilles de l'entretoise qui assure non seulement l'écartement des tubes de chauffage, mais aussi leur maintien. According to another characteristic of the invention, the spacer is made of an elastic material. It is thus possible to introduce the tubes into the shells of the spacer which not only ensures the spacing of the heating tubes, but also their maintenance.

Selon une autre caractéristique de l'invention, les faces extérieures de l'entretoise disposéeS suivant la direction des tubes de chauffage sont tangentes aux surfaces extérieures des tubes de chauffage, au moins dans la zone située au voisinage immédiat desdites surfaces. On obtient ainsi un tracé de l'entretoise dont les coquilles entourent les tubes de chauffage sur plus d'une demicirconférence, en particulier quand la même entretoise maintient plus de deux tubes de chauffage, ce qui produit facilement des coquilles dans lesquelles les tubes de chauffage peuvent être introduits. According to another characteristic of the invention, the external faces of the spacer arranged in the direction of the heating tubes are tangent to the external surfaces of the heating tubes, at least in the zone located in the immediate vicinity of said surfaces. This gives a plot of the spacer whose shells surround the heating tubes on more than half a circumference, in particular when the same spacer holds more than two heating tubes, which easily produces shells in which the heating tubes can be introduced.

D'autres caractéristiques et avantages de l'invention seront mieux compris à l'aide de la description détaillée ci-dessous d'un exemple de réalisation et du dessin annexé sur lequel la figure 1 est une coupe, suivant l'axe I-I de la figure 2, du tablier séparant le compartiment moteur de l'habitacle d'un véhicule automobile; et la figure 2 est une coupe des tubes de chauffage suivant l'axe II-II de la figure 1. Other characteristics and advantages of the invention will be better understood with the aid of the detailed description below of an exemplary embodiment and of the appended drawing in which FIG. 1 is a section along the axis II of the Figure 2, the apron separating the engine compartment from the passenger compartment of a motor vehicle; and FIG. 2 is a section of the heating tubes along the axis II-II of FIG. 1.

Un tablier 2 séparant le compartiment moteur de l'habitacle d'un véhicule automobile comporte une ouverture 1, que traversent simultanément trois tubes de chauffage 3, 4, 5. Ces derniers aboutissent à un élément chauffant d'un dispositif de chauffage du véhicule, le tube de chauffage 3 étant par exemple une canalisation d'alimentation en eau chaude provenant du refroidissement du moteur, et les tubes de chauffage 4 et 5 servant de canalisations de retour. An apron 2 separating the engine compartment from the passenger compartment of a motor vehicle has an opening 1, which three heating tubes 3, 4, 5 pass through simultaneously. These latter lead to a heating element of a vehicle heating device, the heating tube 3 being for example a pipe for supplying hot water coming from the cooling of the engine, and the heating tubes 4 and 5 serving as return pipes.

Les tubes de chauffage 3, 4 et 5 sont réalisés du côté du compartiment moteur sous forme de raccords cannelés pour tuyaux flexibles.The heating tubes 3, 4 and 5 are produced on the side of the engine compartment in the form of barbed connections for flexible pipes.

Une entretoise 9 commune assure l'écartement et le maintien des tubes de chauffage 3, 4 et 5 qui sont disposés aux sommets d'un triangle équilatéral. L'entretoise 9, réalisée dans un matériau élastique et en particulier dans une matière plastique, comporte trois coquilles 6, 7 et 8, qui s'appliquent sur la circonférence extérieure des tubes de chauffage 3, 4 et 5 qu'elles contiennent. A common spacer 9 ensures the spacing and maintenance of the heating tubes 3, 4 and 5 which are arranged at the vertices of an equilateral triangle. The spacer 9, produced in an elastic material and in particular in a plastic material, comprises three shells 6, 7 and 8, which are applied to the outer circumference of the heating tubes 3, 4 and 5 which they contain.

Les faces extérieures 10, 11 et 12 de l'entretoise 9, disposées suivant la direction des tubes de chauffage 3, 4 et 5, sont tangentes aux surfaces extérieures de ces derniers, ce qui produit une portée de joint circulaire continue, ne présentant aucune irrégularité ou discontinuité' Une lèvre 14 d'un joint d'étanchéité 13, dirigée vers le compartiment moteur du véhicule automobile, s ap- plique sur ladite portée. Le joint d'étanchéité 13 présente un bourrelet annulaire 16 muni d'une gorge annulaire 15 qui se place sur le bord de l'ouverture 1 du tablier 2. Ledit bord est sensiblement parallèle à la portée formée par les faces extérieures 10, 11, 12 et les tubes de chauffage 3, 4 et 5 en saillie sur ces dernières.The outer faces 10, 11 and 12 of the spacer 9, arranged in the direction of the heating tubes 3, 4 and 5, are tangent to the outer surfaces of the latter, which produces a continuous circular joint surface, having no irregularity or discontinuity 'A lip 14 of a seal 13, directed towards the engine compartment of the motor vehicle, is applied on said surface. The seal 13 has an annular bead 16 provided with an annular groove 15 which is placed on the edge of the opening 1 of the apron 2. Said edge is substantially parallel to the bearing formed by the outer faces 10, 11, 12 and the heating tubes 3, 4 and 5 projecting therefrom.

il est évidemment possible aussi de faire passer un nombre différent de tubes de chauffage dans une ouverture commune du tablier 2. Lorsque deux tubes de chauffage par exemple sont prévus, il convient de réaliser l'entretoise avec une forme ovale ou elliptique, de façon qu'elle produise dans ce cas aussi une portée circulaire continue pour un joint d'étanchéité. Il est de meme possible aussi de prévoir plus de trois tubes de chauffage, le profil extérieur de l'entretoise et les surfaces extérieures des tubes de chauffage en saillie sur les coquilles tendant alors vers une surface circulaire. it is obviously also possible to pass a different number of heating tubes in a common opening of the deck 2. When two heating tubes for example are provided, it is advisable to make the spacer with an oval or elliptical shape, so that 'it also produces in this case a continuous circular bearing for a seal. It is likewise also possible to provide more than three heating tubes, the external profile of the spacer and the external surfaces of the heating tubes projecting from the shells then tending towards a circular surface.

Bien entendu, diverses modifications peuvent etre apportées par l'homme de l'art au principe et aux dispositifs qui viennent d'être décrits uniquement à titre d'exemples non limitatifs, sans sortir du cadre de l'invention. Of course, various modifications can be made by those skilled in the art to the principle and to the devices which have just been described only by way of nonlimiting examples, without departing from the scope of the invention.

Claims

1. Motor vehicle comprising an engine compartment and a passenger compartment separated by an apron through which several heating tubes mounted with spacing and having sealing means with respect to an opening of the apron, said vehicle being characterized in that a common opening (1) of the deck (2) is crossed by several heating tubes (3, 4, 5) which, in the vicinity of the opening (1), are held by a spacer (9) provided with shells (6, 7, 8) housing the heating tubes (3, 4, 5), filling the free space between said tubes (3, 4, 5), and the outer faces (10, 11, 12) of which are arranged in the direction of said tubes (3, 4, 5) form with parts of the outer surfaces of the latter a circular surface, a common seal (13) being disposed between said surface and the edge of the opening (1).

2. Motor vehicle according to claim 1, characterized in that the spacer (9) is made of an elastic material.

3. Motor vehicle according to one of claims 1 or 2, characterized in that the outer faces (10, 11, 12) of the spacer (9), arranged in the direction of the heating tubes (3, 4, 5), are tangent to the exterior surfaces of said tubes, at least in the vicinity of the latter.

4. Motor vehicle according to any one of claims 1 to 3, characterized in that the seal (13) is provided with a lip (14) which is applied to the peripheral surface formed by the spacer (9) and the heating tubes (3, 4, 5).

5. Motor vehicle according to any one of claims 1 to 4, characterized in that the seal (13) presents an annular groove (15) which is placed on the edge of the opening (1) of the apron (2 ).

6. Motor vehicle according to any one of claims 1 to 5, characterized in that the shells (6, 7, 8) of the entre; measuring rod (9) are arranged at the top of an equilateral triangle.

7. Motor vehicle according to any one of claims 1 to 6, characterized in that the edge of the opening (1) of the apron (2) is substantially parallel to the profile of the peripheral surface formed by the spacer (9) and the heating tubes (3, 4, 5).