FR2519399A1 - Car bodywork door seal - has serrated profile for gripping and deformable tubular section, to aid sealing - Google Patents

Abstract

The door seal for a motor vehicle comprises a rubber section (1) which pinches on to a rim of the bodywork. It has a serrated profile to encourage grip, and a tubular section (2) which incorporates holes (3) in the wall (4) along its length to produce areas of small resistance to deformation. The holes (3) are protected by a lip (5). When the seal is in operation when the door is closed, the wall of the tubular section (2) deforms because of the holes (3) producing a watertight seal.

Description

he invention aims, improvements to the so-called "complex" seals, $ ensuring the finish and tightness of automobile bodies, n gel or the profile of "pinch in the shape of U", cohort a central metal frame , of any known and interacting type, with a profile of the tubular type to ensure the tightness, but originalenent improved, by the fact that it comprises an auxiliary lip, with the double aim of improving the tightness and of masking, air exchange holes, through an adjacent partition,
so as to ensure a more aesthetic overall presentation.

These new features, as well as others related to them and the advantages of the invention, will be better understood by referring to the following description and to the accompanying drawings, showing an advantageous embodiment - but not at all. limiting - and in respect of which:
Fig.I shows a cross section of a seal of the type called "two-component", improved in accordance with the invention and mounted on a flange, of an automobile door frame.

 Fig.2 shows a cross section of an alternative embodiment called "assembled profile", but further improved, according to the invention.

 Fig.3 shows a schematic cross section of a seal according to Fig.2, in the so-called "compression" position, by closing a door.

Fig.4 shows a perspective view of a section of "two-component" type seal, improved in accordance with the invention
Ia Fig.5 shows, a perspective view of the same section of joint after "curvature" and showing, that thus it retains the same aesthetic presentation.

 According to Mg.I, there is a section of a profiled joint for automobiles, consisting of a usual metal frame, of a "pinching" profile -I-, advantageously in the form called "fishbone", encased by "extrusion" of rubber all around, with simultaneous extrusion of internal clamping lips and of an adjacent tubular profile -2-, but originally perfected by the fact that it comprises, the new combination of cyclic holes, such as -3producing a zone of "least resistance", in the partition -4-, with a lateral extension, in the shape of a lip -5-, to hide them.

Fig.2 shows an alternative embodiment, transposing the same characteristics, in the case where the pinch profile -6- is formed separately, for example by extrusion of so-called "plastic" material, around the central frame. usual -7-, to be combined by gluing, with the tubular sealing profile -8-, also extruded separately and advantageously, in cellular rubber, for example, and further improved by the combination of cyclic holes, such as -9- in the partition -I0-, always masked by a lip
auxiliary -II-.

Fig. 3 shows that the improved seals facilitate sealing
te, rar crushing, in the closed area the door -I2-, while assu
rant a good presentation in this area, where the traces of the holes, such as
-9-, are not likely to appear, due to their overlap, by the lip -II-, even in areas of curvature, as shown in Fig.5.

 Although this is obvious, it is further specified that the invention is in no way limited to these characteristics and to the only modes of execution explicitly described - simply by way of examples to materialize the invention, but that, on the contrary, its field expressly extends to all variants, scope of application and particularly, to those implementing equivalent means or methods, or simply comparable, in order to produce the new industrial products, characterizing the present invention , or even just a fraction I these new products.

Claims (1)

 I.- Joint known as "complex", in particular for car bodies, of the type comprising a central metal frame -I-, of its so-called "pinching" profile, combined with a tubular sealing profile -2-, by simultaneous double extrusion or by gluing, characterized in that the tubular sealing profile -2- is improved, in that it also combines cylindrical holes such as -3-, with its partition -4- of the sealing zone, with an adjacent covering lip -5-, to improve both the sealing and the good external appearance, even in the event of curvature, in this zone.