FR2663268A1 - METALLIC REINFORCEMENT FOR BOURRELET PROFILES USED ON AUTOMOTIVE AND SIMILAR VEHICLES. - Google Patents

Abstract

The frame is of the type which configures a splined body, with a "U" cut on the basis of a plurality of plane and transverse fins (1), equal and uniformly distributed, but having the special characteristic of this. that these fins are grouped together in pairs by means of longitudinal nerves (2) which are located in correspondence on two imaginary longitudinal axes A and B which in turn are located on the side walls of the splined body, while the various pairs of 'fins (1) are joined to each other by other longitudinal nerves (3) which lie both on a single longitudinal axis C, placed on one of the lateral faces of the fluted body. The shrinkage and longitudinal extensibility of the bead profile are directly proportional to the distance between the axes A and C.

Description

The present invention refers to a metal reinforcement with profi

  bead, of the type that are normally used in the bodywork of motor vehicles, specifically on the mouth of the closable holes, such as door hollows, chests, hoods, etc., to seal the corresponding sealed closure, this frame was substantially

  perfected so as to obtain optimal conditions for extending

  sizing and longitudinal shrinkage, with a possibility of adjustment for these variables as well as an optimal control of the residual forces because the Profi-bead is subjected to curvatures of

different orientation.

  As is known, the profiles of this type are made from a Le "cane" body with a "U" -shaped cut on the basis of an elastomer material or a plastic material on which a rubber bead is leaned against. , on its middle branch or on one of the lateral branches The cane body Le intended to tighten and pinch the perimetral edge of the recess on which the profile is to be installed is made rigid by a metal frame to promote its positional stability on the vehicle, while the

  Rubber bead performs the hermetic seal.

  The metal frame must be structured so as to allow the deformation of the profile in all directions, in order to be able to adapt to the particular and variable geometry of each body to be sealed, while maintaining the sufficient rigidity in its

  final position for it to be stable.

  But, moreover, the metal reinforcement must allow a certain longitudinal shrinkage of the profile, to correct any misalignment of dimension between the profile itself and

  the periphery of the hollow to be sealed.

  One of the commonly used solutions for these reinforcements consists of a configuration of the "double comb" type, based on a longitudinal nerve with a plurality of transverse fins oriented in both directions and equipped with orthogonal braces to give the whole of the frame the configuration cane Lée and with a cut in "U" to which we referred previously Although this solution is acceptable as regards the lateral deformations of the

  profiled-bead, it offers no possibility of shrinking

longitudinally.

  It is the same with other conventional solutions.

  In which, to improve the lateral deformability of the profile in a given direction, the armature similar to that of the previous case has two longitudinal nerves, instead of a single longitudinal nerve, which in this case are intended to be placed on the side faces of the channel defined by the frame, which solution has the same problem as to the appearance of the narrowing of the profiled bead. Structured metal reinforcements are also known on the basis of a wire which forms turns united by longitudinal threads which presents problems when it is necessary to dominate and orient the residual forces on the lateral curvatures in a relevant way, and stretch the wire element or adopt the rectilinear position, sometimes tending to extract the

profile of the place where it is placed.

  The applicant himself holds the utility model 281 093, which also refers to a metal profile of car profiles and the like, specifically in this case and with the

  same fluted "U" shaped configuration, the transverse fins

  dirty "Y" bifurcated on each of their lateral branches and united to the adjacent by their ends, constituting the only link of union between them, so that there existed also two lateral and longitudinal nerves of union, these The latter adopted a sharp broken trajectory, which allowed a slight contraction of the profile in addition to the lateral deformation.

of the last.

  However, said contraction may sometimes be insufficient

  it also offered no possibility of controlling the residual forces on the bead profile or of adapting to very closed radii as it did not have the possibility of

  of elongation of one of its lateral faces.

  The metal reinforcement for the bead profiles proposed by the invention constitutes a new important evolutionary step in this technical field, while also allowing perfect lateral deformation and longitudinal narrowing which are adjustable, all with perfect control of the forces

  when the profile is subjected to bending of orienta-

  different, as we have said before.

  For this and more concretely, the reinforcement

  metal which is recommended is structured as it is

  tional, on the basis of a laminar body on which are established several transverse fins, uniformly distributed, connected by longitudinal nerves according to the laminar body to adopt a cane structure Lée, with a cut in "U", but with the special feature that the fins cited are grouped together in pairs by short longitudinal nerves which are placed on imaginary axes located both on the lateral branches of the grooved body, while these pairs of fins are interconnected by another group of nerves which form a single longitudinal alignment on an imaginary axis placed on one of the lateral faces of the splined body, so that the pairs of fins are completely independent of each other, both by the other lateral branch of the grooved body than by their

middle branch.

  In addition, and this is one of the features of the invention, the imaginary axis on which the nerves connecting the different pairs of transverse fins are placed is offset with respect to the axis of the same face of the grooved body which places the

  in each pair, the degree of shrinkage

  the lateral aspect of the profile being even larger than the distance

between these two axes is great.

  To complete the description that we realize and to

  to assist in a better understanding of the features of the invention, is attached to this specification, as part of the latter, a set of drawings which has been shown in FIG.

  which follows for illustrative and not limiting.

  Figure 1 shows the development of the metal reinforcement

  for bead profiles used on self-propelled

  mobiles and the like which constitutes the object of the present invention. Figure 2 shows the same metal frame, with its

  cane configuration Lée and according to a perspective view.

  Figures 3, 4, 5, 6, 7 and 8 show different diagrams

  grams of behavior of the metal frame depending on the type of Profi-bead and deformations to which it will be subjected. At the sight of these figures and more precisely of Figures 1 and 2, it can be seen how the recommended metal reinforcement part of a flat laminar structure, that shown in Figure 1, which is transformed into a cane structure Lée, with a "U" cut intended to be covered with rubber or

flexible plastic.

  In a more concrete way, we establish in structure

  plane mentioned a plurality of transverse fins (1), identical

  ticks between them, parallel and equidistant which are grouped in pairs with the collaboration of the longitudinal nerves or union links (2) and (2 ') located relatively close to their ends and which are both included on imaginary longitudinal axes A and B, which after the transformation of this planar structure into a channel-like structure of FIG. 2, are placed on the faces

  side of the "U" as seen in this figure.

  In addition, these pairs of transverse fins (1) are in

  relationship with each other by other links or long nerves

  tudinal (3), which in this case are aligned on a single imaginary axis, referenced as C, which is located on lateral sides of the body cane Le, concretely between the axis A corresponding to the nerves (2) mentioned previously and the fold line D which puts this side wall of the cane body Le in

relationship with its average branch.

  In accordance with this structure, the longitudinal shrinkage

  tudinal required by the Profi for its assembly can be graduated according to the thickness and the nature of the iron metal strip and the width of the nerves (2), (2 ') and (3) and profiles (1 ), the distance between the axes A and C so that more

  Said distance will be large and the possibility of shortening

  the profile-bead in its entirety will be large.

  Appealing Lant neutral face of the frame that on lacquer Lle

  is the axis C, because during lateral deformations of the profile-

  b rim on said face i L does not exist tensile forces nor compression, i L may happen that in practice the rays of rotation, the deformation of the profile, are para Llela said neutral face, deformations that are perfectly accepted by the armature and giving rise to a neutral line on the C axis, which, being close to the middle armature armature, reduces compressive forces in the case where the bead or tubular (4) is supported by said face and adopts a curvature like the one that

shows figure 3.

  For the beads or tubulars (4) supported by the middle branch whose curvature is opposite in this case, the effect is contrary, because they are subjected to traction, but the neutral line being close to said middle branch, the tensile forces are reduced and they decrease the tendency to crush the bead

(4) as shown in Figure 5.

  For the beads (4) supported by the neutral face, the harmful effect of the compression could be reduced, if there are several rays of this type, by moving the axes A and C towards the end of the armature, as shown in Figure 6, or keeping them as close as possible to the middle branch if the

  rays are of the opposite type as shown in Figure 4.

  The behavior of the reinforcement is excellent when the

  Rays of rotation are perpendicular to the neutral face.

  Principally for profiles whose bead or tubular (4) is on the middle branch, by subjecting the profile or the spokes of this type, all the profile which remains outside the neutral face is subjected to traction while avoiding that wrinkles may appear When part of the profile, the sector referenced as (5) in Figure 7 remains outside the neutral face, compression forces take place, they are proportional to the distance to the neutral face mentioned , and so

  lower than on another type of reinforcement.

  For Profi The edges of which The bead (4) is supported by the neutral face, all The bead remains outside the latter and therefore i L is subjected to tensile forces that will induce crushing of the bead In the frame The neutral face is located near the bead itself, thus the tensile forces will be lower than that of other cases and therefore the crushing will be lower, as well as

The observation of Figure 8.

  It is not necessary to extend further this

  description so that any subject matter expert understands the scope

  of the invention and the advantages resulting therefrom.

  The materials, the shape, the size and the layout of the elements will be subject to variation, however, as long as

  This will not alter the essentiality of the invention.

  The terms in which Ls this memory is described shall

  to be taken in the sense of the Lusamist and not Limitative.

Claims (3)

  1 Metal reinforcement for Profi Bead-rim used on motor vehicles or the like, of the type starting from a flat structure in which is defined a plurality of transverse fins, equal and evenly distributed, flat structure on which are defined two longitudinal lines of fold   to configure a Le cane body with a "U" shaped cut,   in that said fins are grouped in pairs with   the collaboration of nerves that form two longitudinal alignments   dinals located relatively close to the ends of these fins and concretely placed on the lateral faces of the cane body Le, in that said pairs of fins are joined together by the collaboration of other nerves which form a single longitudinal alignment located on one of the lateral branches of the cane body Le, so that said pairs of fins are completely independent of each other on the other lateral branch and on the   middle branch of this grooved body.   2 reinforcement according to claim 1, characterized in that the imaginary longitudinal axis which groups together the nerves between the pairs of fins is located between the imaginary axis which groups together the fins of each pair on the same lateral branch of the body cane Le and the union edge of said lateral branch to the average branch of the latter.   Armature according to any one of the claims   previous, characterized in that the distance between the axis which groups the longitudinal nerves of union between the pairs of fins and the axis which groups together the nerves of union between the fins of each pair placed on the same face, is variable and directly proportional to the degree of shrinkage expected to   the profile-bead as a whole.