FR2839536A1 - Lining profile for mounting on plate edge comprises retractable retaining wedge connected to wall of reception cavity, housing in cavity wall has inclined plane bottom serving as sliding ramp for wedge underside - Google Patents

Abstract

The profile (1) comprises a retractable retaining wedge (16) having an upper face (17) and an underside (18) connected by a connection (19) to a wall (9) of a reception cavity (3). There is a housing (10) formed in the cavity wall where the wedge is retracted and the plane bottom (11) of which is inclined so as to serve as a sliding ramp for the underside. A friction surface (20) on the wedge upper face constitutes a means of retaining the profile on the plate edge (4).

Description

claims 1 to 8.

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  The present invention relates to an improved retaining trim profile intended to be fitted on an edge of any support element, such as for example a plate, a window pane or a flat junction at the end of sheet metal (s). The invention can be applied to numerous trim profiles, such as sealing, protection, aesthetic, soundproofing or other profiles, in the most

various.

  In the same way, the support for mounting the profile according to the invention can be of varied nature. It can be, among other things, a window pane, a panel, a mirror product, a thin wall, a raised return or a flange of

  junction between two metal walls.

  By way of example, there may be mentioned a few preferential applications of the invention, in particular in the automotive sector with, for example, gaskets embellishing fixed vibes, trim profiles of the frame of a bodywork sash, such as a bonnet, a door, a trunk or a non-sliding opening window, or in other sectors such as industry or building with, for example, gaskets for shower stalls, for showcases, boxes, etc ... In a classic way, these wind profiles consisting of a hooking part allowing the positioning with retention of the profile on the edge of the support clement and of various functional shapes depending on the application considered, such as for example a flexible masking lip, a bead

flexible sealing or other.

  The attachment portion generally has a substantially U-shaped cross section comprising a base and two lateral walls, thus defining a cavity between its branches.

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  receiver capable of receiving the edge of the supporting element. To facilitate the step of mounting the profile, the attachment portion must be able to be engaged on the edge of the support element following minimal effort. However, the profile must also have a high resistance to tearing in order to oppose any involuntary and accidental removal of the profile

after its installation.

  To solve this technical problem, various

  profiles of this type have been proposed.

  We know for example a profile comprising, on one of the lateral walls of the receiving cavity, a longitudinal rib projecting towards the interior of the cavity and produced in a flexible friction material. When the profile is mounted on the edge to be trimmed, the latter engages in the receiving cavity of the attachment portion of the profile. The rib is in pinch contact with the edge and exerts a significant friction opposing the movement of withdrawal of the profile relative to the edge. This simple structure profile has a significant and satisfactory retaining effect by playing only on the difference in the nature of the materials in contact. However, it opposes an identical friction resistance when it is engaged on and when it is removed from the edge. It therefore requires a particularly large mounting effort, which

is a major drawback.

  Numerous profiles are also known, the receiving cavity of which is provided with at least one flexible lip projecting into the cavity and hinged in an articulated manner to a side wall of the latter. This lip, due to its orientation towards the bottom of the cavity, its shape, its flexibility and possibly a possibility of retracting in

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  housing, only very weakly stops

  the engagement of the border in the receiving cavity.

  The assembly effort required to fit the profile on

the border is therefore limited.

  When the border is in place, the lip comes to press elastically against the border. Due to the adhesion of the flexible material against the edge, when a withdrawal force is exerted on the profile, the lip is lifted and in a movement of buttressing creates a pinch so opposed to the extraction

or when the profile is torn off.

  Unfortunately, the resistance to tearing generated by this kind of lip is relatively limited. Indeed, the lip is in contact with the border only on a very small area, most often limited to a contact line. In addition, the desired pinching effect is limited by the length of the lip and by the

  compressibility of the flexible material which constitutes it.

  Furthermore, another drawback is encountered with this type of realization when the lip is not requested. This is the phenomenon of limping of the fitted profile on its support, linked to the functional play, which the lip cannot prevent and which is detrimental for the type of applications sought. An example of such a bracing lip profile is disclosed in application EP 0.404.614, in the name of AUTOMOBILES PEUGEOT and AUTOMOBILES CITROEN. The lip described in this application has a profile

  specific in the form of a logarithmic spiral arc.

  The purpose of the present invention is to remedy the drawbacks mentioned by teaching an improved profile which requires a low mounting force when lengging on the edge of a support element, while subsequently ensuring a strong

  withheld from tearing or removal.

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  To solve this technical problem, the invention teaches a trim or protection profile with improved retention, intended to be fitted on the edge of a flat element, one or more returns or junction of thin walls or stripping and comprising so classic a hooking part presenting a receiving cavity with rabbet function generally U-shaped section which can be extended by additional means

aesthetic or functional.

  The profile according to the invention is characterized in that it further comprises: - a retractable retaining cafe, having an upper face and a soul face, connected by a connection to a wall of the receiving cavity, and - a housing formed in the adjacent side wall of the receiving cavity, in which the retaining coffee is retracted and whose flat bottom is inclined to serve as a sliding ramp on the underside of the hold, and in that the condition of the surfaces or the nature of the materials is such that the coefficient of friction between the upper face of the retaining coffee and the face opposite the edge is greater than that between the soul-face of the coffee and the inclined bottom facing the housing, so as to constitute an improved retaining means of the profile on the edge operating by wedging whose efficiency increases with the displacement of the coffee leaving its housing following a pulling extraction, removal or

tearing of the profile.

  In order to achieve this difference in coefficient of friction, the upper face of the retaining coffee preferably has a friction surface, preferably produced in the form

a soft friction lining.

  Other features and benefits of

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  the invention will appear on reading the description

  detailed which will follow, description made with reference

  in the accompanying drawings, in which: FIG. 1 is a general perspective view of an exemplary embodiment of the profile according to the invention in free condition; Figure 2 is a schematic cross-sectional view of an exemplary profile according to the invention in free condition; 10. Figure 3 is a schematic cross-sectional view of the profile of Figure 2 shown mounted on the edge of a plate; Figure 4 is a schematic cross-sectional view similar to that of Figure 3, the profile being at the start of extraction; FIG. 5 is an enlargement of detail A of FIG. 4 materialized by an outline in dashed lines,

  correspond to the coffee holding area.

  The improved retained profile according to the present invention will now be described in detail, we detail with reference to Figures 1 to 5. The equivalent elements shown in the different figures

  will bear the same numerical references.

  By convention in the present request, we will consider the orientation of the profile on the different figures to define the concepts of superior and inferior. I1 is obviously understood that the profile can subsequently take a different orientation in the context of its use, which can be reversed from the figures, or even vertical. The trim profile according to the invention can be produced in different forms depending on the

  needs and particularities of the application.

  In the various figures, an exemplary embodiment of the profile 1 according to the invention is represented, corresponding to an embellished profile of

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  fixed vibes. However, it should be understood that

  these figures as well as the detailed description of

  these are in no way limiting on the scope of

  the invention defined by the claims.

  In common with all of its variant embodiments, the body of the profile 1 comprises a hooking part 2 of U-shaped section, thus forming a receiving cavity 3 with a rebate effect intended to receive a border such as 4. This behind relates as well to the edge of a window 5 as shown, but also a border formed by one or more body returns or any other border depending on

the application.

  Conventionally, this attachment part is generally made of a relatively relatively

  rigid, preferably a rigid plastic.

  Wile can also be made of rubber or any other material, possibly reinforced with a

metal frame.

  The variant represented by the profile according to the invention further comprises a flexible masking lip 6, taking for example birth at the rear of the attachment part 2 and which can be used to mask an unsightly gap once the profile has been put in place. The receiving cavity 3 is in the form of a channel comprising a bottom wall 7 correspond to the base of the U and two lateral walls, one upper 8 and the other lower 9, correspond to the branches of the U and preference

substantially parallel.

  Adjacent to this channel and opening into the receiving cavity 3 through one of its walls

  lateral, there is a linear housing 10.

  In the variant shown, the housing 10 conforms in the lower side wall 9 of the receiving cavity 3. Nevertheless, it can without

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  difficulty being achieved in the upper side wall 8, the other means of the invention being

so adapt accordingly.

  The bottom of the housing 10 has an inclined plane 11 forming a ramp which, for example, comes into junction by the extension of one of its ends 12 with the upper face 13 of the lower side wall 9 and by its other end 14 with a stop surface. 15 preferably perpendicular to the lower side wall 9 of the receiving cavity 3. The flat bottom 11 of the housing 10 is inclined relative to the horizontal at an angle preferably between 5 and 80, the optimum value of this angle dependent coefficients of friction of the different materials used. So

  preferential, it is between 5 and 45.

  The linear housing 10 is intended to receive a movable linear retaining coffee 16, constituted by a profile having an upper face 17 looking towards the receiving cavity 3

  and a soul face 18 facing the bottom inclines 11.

  The retaining coffee 16 preferably has a section which is substantially wedge-shaped and more preferably substantially triangular. Wile preferably has a slope corresponding to

that of the inclined ramp 11.

  The retaining coffee 16 is preferably also produced in a relatively rigid material, for example a rigid plastic material, which may be identical or different from that composing the hooking part 2 and therefore the entire profile.

  conventionally performed by extrusion.

  The coffee is connected, for example by its bevelled end 12, to the side wall 9 and in particular at the level of the adjacent edge thereof, by means of a connection 19, preferably flexible, it

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  serving as a pivot articulation and providing a sufficient latitude of movement to allow the displacement of the coffee 16 relative to its housing 10 are carried by its soul-face 18 on the inclined ramp 11. According to an essential characteristic of the invention, the state of the surfaces or the nature of the materials is such that the coefficient of friction between the upper face 17 of the retaining coffee 16 and the face of the edge 4 with which it is in contact when the profile is put in place, is greater than the coefficient of friction between the soul-face 18 of the

  cafe and the bottom slopes 11 opposite the accommodation.

  According to a preferential variant, the coffee 16 has for this purpose a friction surface 20 on its upper face 17. This friction surface can be produced by treatment or take the form of a coating, a filling, a layer or an insert. or coextruded with the upper side

  has mechanical friction properties, that is,

  say a characteristic of contact with the facing surface providing a certain resistance to displacement to allow the entrainment of the coffee 16 during the relative displacement of the profile 1 relative to the

  border 4 on which it is or must be mounted.

  Thus, the coffee 16 is preferably lined with a coating produced with one or more flexible plastic materials having satisfactory adhesion and friction properties with respect to the face opposite the border 4. This coating can extend towards the before the coffee and constitute the

liaison 19.

  On the other hand, the soul-face 18 of the coffee 16 presents a smooth sliding surface allowing the easy movement of the latter on the inclined ramp 11

with a simple swipe.

  The contact between the two rigid surfaces and

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  smooth of the soul-face 18 and the inclined ramp 11 allows most of the time a satisfactory sliding

  retaining coffee 16 relative to its housing 10.

  Nevertheless, it can be provided to provide the soul face 18 and / or the inclined ramp 11 with a sliding surface, preferably in the form of a sliding coating or to treat the surface or surfaces facing it. or give them improved friction properties. This means, making it possible to increase the difference between the coefficients of friction, can be used in addition to the surface of

  friction 20 or in place thereof.

  The sliding contact can be improved by any treatment, for example with a lubricant spray. The link 19, connecting the coffee to the lower side wall 9, is loose to allow easy movement of translation of the wedge. He graduated from

  preference of a flexible articulation link.

  According to a preferred embodiment of the invention, the friction surface 20 is a friction lining, which is preferably made in a flexible material extending in the same material to achieve in the form of a flexible bridge the connection 19 of articulation between cafe 16 and

  wall 9 of the receiving cavity 3.

  Referring to FIGS. 2 to 5 and more particularly to FIGS. 3 to 5, the operation of the jamming blockage provided by the coffee can be

describe in the following way.

  When the profile according to the invention is free before installation as shown in Figure 2, the coffee 16 is held by the link 19 in a loose or floating position, inside the

receiving cavity 3.

  When the profile 1 is fitted on the edge 4 of the window 5 for example, the coffee 16 1 o 2839536 is erased from the receiving cavity 3, retracting into the housing 10, thus leaving the cavity 3 free so as to be able to insert border 4 without any discomfort. In this way, the mounting effort is advantageously very low. When the assembly is "ermine, the profile is in the configuration shown in FIG. 3. The receiving cavity 3 is entirely occupied by the edge 4 whose edge comes to bear against the

back wall 7.

  In order to avoid a damaging phenomenon of limping of the profile on the edge, it is preferable to provide in this configuration a slight prestressing or a slight pinching of the edge by the profile. The edge 4 is therefore in light pinch contact by its upper and lower faces respectively with the lower face of the upper wall 8 and the friction surface 20 lining the

  upper face 17 of the mobile cafe 16.

  In Figure 4, the profile has been represented in a configuration where it undergoes a tearing force, that is to say an extraction pull

symbolized by an arrow 21.

  Such an extraction effort tends to cause a relative displacement of the border 4 towards

  outside the receiving cavity 3.

  The friction surface 20 of the upper face 17 of the coffee 16 adheres to the edge 4 with which it is in contact and opposes the relative displacement of these two surfaces. On the contrary, the underside 18 of the coffee 16, being smooth and rigid, can slide without difficulty along the inclined ramp 11. Therefore, the displacement of the edge 4 causes a displacement of the retaining coffee 16 which follows its movement by translation along the inclined ramp 11. Due to the inclination angle of

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  the ramp 11 and the geometric of the cafe 16, the horizontal displacement of the cafe 16 is accompanied by a displacement in ascent thereof causing the edge 4 to be jammed by the retaining cafe against the upper wall 8 of the cavity of reception 3 which thus prevents any withdrawal of the profile out of the border. In order to facilitate the understanding of the functioning of the retaining device according to the invention, the Replacements of the coffee 16 have been materialized on the enlargement of FIG. 5. The initial position of the mobile coffee 16 has been represented in broken lines and its final position

in solid lines.

  The extraction force 21 causes a partial withdrawal of the edge 4 which results in a longitudinal displacement Ax of the retaining coffee 16. To this longitudinal displacement Ax corresponds a transverse displacement Ay due to the fact that the coffee does not

  can move only along the incline plane 11.

  Simultaneously with its movement of drive through the border 4, the coffee 16 therefore moves upwards which causes a tightening of the lateral walls of the receiving cavity 3 and causes jamming.

of the border.

  Obviously, the amplitude of the longitudinal displacement Ax of the coffee 16 and beyond its longitudinal displacement Ay depends on the importance of the extraction force exerted on the profile. Thus, in a particularly advantageous manner, the wedging and therefore the retaining force generated by the profile

  increase with the lifting force.

  In a particularly advantageous manner, the retaining coffee is designed so that the friction surface 20 is in contact with the rear face of the edge over a large area. The friction effect sought is therefore maximum, unlike

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  previously cited anteriorities or the arc lips

  butting only produces a slightly tight and very tight contact

  limit, most often reduced to one line.

  According to a preferred variant of the invention, the friction lining 20 is weakly compressible and / or of low thickness, which makes it possible to overcome a loss of pinching due to

  crushing by compression of this lining.

  In accordance with the general aim stated in the introductory part, the profile according to the invention

  has a very good pull-out retention.

  Advantageously, this retention occurs immediately as soon as a disassembly effort, even a limited one, is exerted and increases with the intensity of this effort by an increasing wedging effect, effectively opposing

  any attempt to tear off the profile.

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Claims (12)

  1. Profile of padding or protection with improved retention, to be fitted on the edge (4) of a flat element, of one or more returns or of junction of thin walls or covering, comprising a hooking part (2) having a receiving cavity (3) having a rebate function with a generally U-shaped cross section which can be extended by additional aesthetic or functional forms (6), characterized in that it comprises: - a retaining coffee (16) retractable, having an upper face (17) and a soul face (18), connected by a connection (19) to a wall (9) of the receiving cavity (3), and - a housing (10) formed in a side wall (9) of the receiving cavity (3) in which the retaining coffee is retracted (16) and the flat bottom (11) of which is inclined to serve as a sliding ramp for the soul face (18) of the wedge, and in that the condition of the surfaces or the nature of the materials is such that the coefficient of friction between the upper face (17) of the ca retaining fe (16) and the face opposite the border (4) is greater than that between the soul face (18) of the coffee and the inclined bottom (11) facing the housing, so as to constitute a means retention of the profile (1) on the edge (4) operating by wedging whose efficiency increases with the displacement of the coffee (16) out of its housing (10) following a pulling extraction, removal or tearing of the profile. 2. Improved retaining profile according to the preceding claim, characterized in that the upper face (17) of the retaining coffee (16) has a   surface condition or a friction surface (20).   3. Profile retained improved according to 14 2839536   previous claim characterized in that the   friction surface (20) is a friction lining.   4. Profile retained improved according to one   any of the preceding claims characterized   in that the soul-face (18) of the retaining coffee (16)   and the inclined bottom (11) of the housing (10) smooth wind.   5. Profile retained improved according to   previous claim characterized in that the sub-   face (18) of the retaining coffee (16) and / or the inclined bottom (11) of the housing (10) is or wind provided (s) a sliding coating.   6. Improved retaining profile according to claim 4 characterized in that the soul face (18) of the retaining coffee (16) and / or the inclined bottom (11) of the housing (10) is or wind treated (s) to improve   its or their sliding properties.   7. Profile retained improved according to one   any of the preceding claims characterized   in that the connection (19) connecting the retaining coffee (16) to a wall (9) of the receiving cavity (3) is a flexible articulation link.   8. Improved retaining profile according to claim 3 characterized in that the friction lining (20) is made of a flexible material which is extended in the same material to achieve in the form of a flexible bridge the connection (19) between the   coffee (16) and the wall of the receiving cavity (3).   9. Profile retained improved according to one   any of the preceding claims characterized   in that the retaining coffee (16) has a section substantially wedge-shaped.   10. Improved retaining profile according to the preceding claim characterized in that the retaining coffee (16) has a substantially section triangular.   11. Profile retained improved according to one   any of the preceding claims characterized 2839536   in that the flat bottom (11) of the housing (10) is inclined relative to the horizontal at an angle between 5 and 80.   12. Profile retained improved according to the claim at ion precedence c aracteris e in that the flat bottom (11) of the housing (10) is inclined relative to