fastening device

Abstract

The invention relates to a fastening device (1) comprising a base (2), a fastening element (3) extending from a first face (4) of the base (2) in a mounting direction (Z), and intended to be inserted and held in a fastening hole, and a gripping area (8) extending on a second face (5) of the base, opposite the first face, the gripping area comprising first retaining elements (9a) projecting from the second face in a direction parallel and opposite to the mounting direction, and intended to hook onto second retaining elements. The base comprises at least one elastically deformable portion (11) configured to deform elastically and move at least in a direction parallel to the mounting direction when a compressive force is applied in the mounting direction to the elastically deformable portion. Fig. 2.

Description

Title of the invention: Fixing device technical field

[0001] The present invention relates to the field of fastening devices for fixing in particular roof linings of motor vehicles. Previous technique

[0002] Clip-type fastening devices (also known as "push pins") allow trims, panels, or coverings to be attached to a structure in such a way that the fastening devices are not visible. These fastening devices are used in the automotive industry to attach headliners to a vehicle structure, inside the passenger compartment, or in the aerospace industry, for example.

[0003] These fastening devices are conventionally produced by an injection molding process and comprise a base and a fastening element extending from a first face of the base. The fastening element is intended to be inserted and held in a fastening hole in the vehicle structure. The fastening element may be a clip comprising two opposing lips or a "fir tree" type clip comprising a series of lips formed on a support extending from the base.

[0004] The fastening device is engaged or clipped into the vehicle structure by pushing it into the mounting hole in a direction perpendicular to the base. The lips deform and retract as they slide along the edge of the mounting hole. The lips then extend once they have passed through the mounting hole, thus locking the fastening device into the mounting hole in the structure.

[0005] The fastening device includes a hooking area extending over a second face of the base, opposite the first face. The hooking area includes first retaining elements designed to hook onto second retaining elements of an attachment zone provided on a vehicle headliner, for example. The first and second retaining elements may be injection-molded hooks or loops. This hook / loop combination allows the headliner to be attached to the fastening device and consequently to the vehicle's roof structure.

[0006] The portion of the structure to which the fastening device is attached is normally flat. However, structures may exhibit a flatness defect localized at the location of the fastening hole. This defect is generated during a Stamping operation when the structure is metallic or during an injection operation when the structure is plastic.

[0007] In addition to these flatness defects, there are the tolerances of the structures. In particular, when the thickness of the structure is at the minimum tolerance, a gap between the base of the fastening device and the structure can be created and lead to a movement between the base of the fastening device and the structure.

[0008] This movement generated by the tolerances of the structures and / or defects in the flatness of the structure generates vibrations in the passenger compartment of the vehicle when the vehicle is in motion, and consequently a very unpleasant noise for the occupants of the vehicle, in particular for electric vehicles which are much quieter than vehicles with internal combustion engines. Description of the invention

[0009] The invention therefore aims to resolve at least in part these drawbacks by proposing a fastening device that reduces or eliminates noise in a vehicle passenger compartment due to vibrations of the fastening device.

[0010] The invention relates to a fastening device comprising a base, a fastening element extending from a first face of the base in a mounting direction and intended to be inserted and held in a fastening hole, and a gripping area extending on a second face of the base, opposite the first face. The gripping area comprises first retaining elements projecting from the second face in a direction opposite to the base and intended to grip onto second retaining elements. The base comprises at least one elastically deformable portion configured to deform elastically and move at least in a direction parallel to the mounting direction when a compressive force is applied in the mounting direction to the elastically deformable portion.

[0011] The first retaining elements protrude from the second face, in particular in a direction parallel and opposite to the direction of assembly.

[0012] The elastically deformable part exerts a force on the vehicle structure along the mounting direction so as to put the base under tension against the structure, and to reduce the relative movements of the base of the fastening device with respect to the surface of the structure. Thus, the base of the fastening device is immobilized with respect to the structure via permanent contact made by the elastically deformable part on the face of the structure.

[0013] The elastically deformable part thus makes it possible to eliminate the play between the base of the fastening device and the structure along the mounting direction and therefore of Eliminate movement between the base and the structure when the vehicle is moving. The mounting device is locked against the vehicle structure.

[0014] The invention thus provides a fastening device that makes it possible to reduce or eliminate noise in a vehicle passenger compartment due to vibrations of the fastening device.

[0015] Vibrations are suppressed over the entire range of thicknesses of the structure taking into account tolerances, and even when the structure has flatness defects.

[0016] Furthermore, thanks to the spring effect produced by the elastically deformable part, securing the fastener during assembly is easier and more consistent. The installer can immediately see if the fastener is correctly secured by the absence of any play. This gives them a feeling of confidence during the installation of the fastener.

[0017] After the fastening device is placed on the vehicle structure, the movement of the fastening device is blocked in the direction of assembly, which reduces the risk of the fastening device coming out of the fastening hole unintentionally due to the play between the base and the structure which is allowed by the tolerances.

[0018] According to one example, the elastically deformable part extends from the base and protrudes at least partially beyond a plane perpendicular to the mounting direction passing through at least part of the first face of the base when the elastically deformable part is not compressed.

[0019] According to an example, not compressed means that the elastically deformed part is at rest or that the elastically deformed part is not in contact with a structure and / or that the elastically deformed part is not subject to a compressive force, in particular a compressive force along the direction of assembly.

[0020] According to an example, when the elastically deformable part is not compressed, the elastically deformable part extends from the base and protrudes at least in part beyond a plane perpendicular to the mounting direction passing through at least a part of the first face of the base, which part of the first face of the base to be considered being that arranged under the fastening element and / or that arranged near the fastening element and / or that arranged near the elastically deformable part.

[0021] According to one example, the elastically deformable part includes at least one inclined portion extending in a general direction which is inclined with respect to a plane parallel to the first face of the base and / or which is inclined with respect to a plane parallel to the second face of the base and / or which is inclined with respect to the mounting direction.

[0022] According to one example, at least one inclined portion extending in a general direction which is inclined with respect to a plane parallel to the first face of the base (and / or the second face of the base) so that it forms an angle greater than or equal to 5°, in particular greater than or equal to 7°, in particular greater than or equal to 10° and / or less than or equal to 75°, in particular less than or equal to 65°, in particular less than or equal to 50°.

[0023] According to one example, the general direction corresponds to the line passing through an end (proximal and / or distal) of the inclined portion and tangent to that end (proximal and / or distal) of the inclined portion and / or to the elastically deformed part.

[0024] According to one example, the general direction corresponds to the line passing through an end (proximal and / or distal) of the inclined portion and tangent to the inclined portion and / or to the elastically deformed part.

[0025] According to one example, at least one inclined portion extending along a general direction which is inclined with respect to the direction of assembly so that it forms an angle greater than or equal to 15°, in particular greater than or equal to 25°, in particular greater than or equal to 40° and / or less than or equal to 85°, in particular less than or equal to 83°, in particular less than or equal to 80°.

[0026] According to one example, the at least one inclined portion has, according to at least one cross-sectional view perpendicular to the first and / or second face of the base, a straight shape or a curved shape, for example a U shape or inverted U or V or inverted V or an M shape or inverted M or W shape or inverted W or an L shape or inverted L or a J shape or inverted J.

[0027] According to one example, the at least one inclined portion comprises a thickness e which is constant or variable, the thickness being measured along a straight line perpendicular to at least one of the faces of the inclined portion.

[0028] According to one example, at least one inclined portion includes a thickness e which is greater than or equal to 0.1mm, in particular greater than or equal to 0.2mm and / or less than or equal to 1.5mm, in particular less than or equal to 1mm, the thickness being measured along a line perpendicular to at least one of the first and / or second faces of the inclined portion.

[0029] According to one example, at least one inclined portion includes an aspect ratio greater than or equal to 1, in particular greater than or equal to 2, in particular greater than or equal to 5 and / or less than or equal to 300, in particular less than or equal to 200, in particular less than or equal to 100, the aspect ratio corresponding to the ratio of the maximum dimension of the inclined portion measured along a direction perpendicular to the direction of assembly to the thickness of the inclined portion.

[0030] According to one example, the elastically deformed part comprises a first inclined portion and a second portion connected to the first inclined portion.

[0031] According to one example, the first inclined portion and the second portion are distinct.

[0032] According to one example, the first inclined portion and the second portion are symmetrical along at least one plane.

[0033] According to one example, the first inclined portion and the second portion are symmetrical with respect to a plane perpendicular to the first face of the base and / or with respect to a plane perpendicular to the second face of the base and / or with respect to a plane comprising a line parallel to the direction of assembly.

[0034] According to one example, the first inclined portion and the second portion are different, for example, they differ in at least one of the following characteristics: the shape and / or the thickness and / or the surface and / or the inclination with respect to the first face of the base and / or the inclination with respect to the second face of the base and / or the inclination with respect to the direction of assembly and / or the dimension and / or the resistance to compression and / or the material and / or the arrangement.

[0035] According to one example, the second portion is a second inclined portion.

[0036] According to one example, the characteristics described for the first portion, in particular the first inclined portion, apply individually and / or in combination to the second portion, in particular to the second inclined portion.

[0037] According to one example, the second portion is a portion extending parallel to the mounting direction and / or perpendicular to the first face of the base and / or perpendicular to the second face of the base.

[0038] According to one example, the second portion is a portion extending perpendicularly to the mounting direction and / or parallel to the first face of the base and / or parallel to the second face of the base.

[0039] According to one example, the second portion has a constant or variable thickness, for example a decreasing thickness, with the greatest thickness being arranged near the base.

[0040] According to one example, the second portion has a thickness equal to or equivalent to the first inclined portion.

[0041] According to one example, the elastically deformable portion un has a thickness differential that is less than or equal to 3, in particular less than or equal to 2, in particular less than or equal to 1.5, in particular less than or equal to 1.0. The thickness differential may be equal to 0, the thickness being constant. In particular, the thickness differential between the first inclined portion and the second portion (in particular between the first inclined portion and the second inclined portion) is less than or equal to 3, in particular less than or equal to 2, in particular less than or equal to 1.5, in particular less than or equal to 1.0. The thickness differential may be equal to 0, the thickness being constant.

[0042] According to an example, the elastically deformable part has a number of portions, for example a number of inclined portions, equal to 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10.

[0043] According to one example, the portions, in particular the inclined portions, are delimited by a change of angle and / or by an edge.

[0044] According to one example, the elastically deformable part comprises a movable blade having a first proximal end connected to the base, in particular to the first face of the base, and at least one distal end distant from the base, in particular distant from the first face of the base, the distal end of the base being intended to be in contact with a structure, in particular to receive the compressive force exerted by the structure.

[0045] In this case, the elastically deformable part comprises a single proximal end, the elastically deformable part forming in particular a (mobile) fin.

[0046] According to one example, a straight line passing through a proximal end of the elastically deformable part and a distal end of the elastically deformable part forms a smallest angle with the first face of the base and / or the second face of the base, an angle greater than or equal to 5°, in particular greater than or equal to 7°, in particular greater than or equal to 10° and / or less than or equal to 75°, in particular less than or equal to 65°, in particular less than or equal to 50°.

[0047] According to one example, the elastically deformable part comprises a first proximal end and a second proximal end, opposite the first proximal end, the first proximal end and the second proximal end being connected to the base, in particular to the first face of the base, and being connected to each other by at least one distal end.

[0048] The second proximal end is then distinct and / or distant from the first proximal end, the elastically deforming part forming in particular a bridge.

[0049] According to one example, the elastically deformable part has at least one convex face oriented in a direction opposite to the first face and at least one concave face positioned opposite the first face of the base. A cavity is formed between the movable blade and the first face of the base.

[0050] According to one example, at least one distal end is arranged between the first proximal end and the second proximal end.

[0051] According to one example, the elastically deformable part comprises at least a first distal end and at least a second distal end.

[0052] According to one example, at least one distal end of the elastically deformable part forms a contact zone intended to be in contact with a structure; the contact zone has the shape of a line, for example a straight line or curve, or of a point or of a circle or of a square or of a rectangle or of a crescent moon or of an arc of a circle or any other shape.

[0053] According to one example, the inclined portion forms a proximal inclined portion connected to the base, in particular connected to the first face of the base and / or the first inclined portion forms a first proximal inclined portion connected to the base, in particular connected to the first face of the base.

[0054] According to one example, the second portion forms a proximal portion connected to the base, in particular to the first face of the base.

[0055] According to one example, the second inclined portion forms a proximal portion connected to the base, in particular to the first face of the base.

[0056] According to one example, the second portion, in particular the second inclined portion, forms a distal portion arranged at a distance from the base, in particular at a distance from the first face of the base, in particular the distal portion of the base being arranged to be in contact with a structure.

[0057] According to one example, the elastically deformed part and / or the inclined portion and / or the first inclined portion and / or the second inclined portion forms a concavity oriented towards the base.

[0058] According to an example, the smallest angle formed between the first inclined portion and the second portion is greater than or equal to 20°, in particular greater than or equal to 30°, in particular greater than or equal to 45° and / or less than or equal to 170°, in particular less than or equal to 150°, in particular less than or equal to 135°.

[0059] According to one example, the first inclined portion and the second portion form an angle other than 90°.

[0060] According to one example, the first inclined portion and the second inclined portion form an angle equal to 90°.

[0061] According to one example, the elastically deformable part comprises a movable blade having at least a proximal portion connected to the base, in particular to the first face of the base, and a distal portion distant from the base, in particular distant from the first face of the base, the distal portion of the base being intended to be in contact with a structure.

[0062] According to one example, a notch is formed in a connection zone linking the first proximal end of the movable blade to a fixed part of the base. The notch improves the mobility of the movable blade. Thus, for the same displacement of the elastically deformable part, a lower force is required.

[0063] According to one example, the base, in particular the first face of the base, comprises at least one housing positioned opposite the movable blade, the housing having a shape configured to receive at least part of the movable blade. The movable blade is movable, along the mounting direction, between a deployed position in which the movable blade protrudes from the first face of the base when the movable blade is not compressed, and a retracted position in which the movable blade is housed at least partially in the housing when the movable blade is compressed.

[0064] According to one example, one or more proximal portions extend from the first face of the base and / or from a lateral part of the base and / or from the second face of the base and / or from at least one face of the base arranged in the housing.

[0065] The housing makes it possible to reduce the bulk of the movable blade when it is compressed, reducing the space between the first face of the base and the structure.

[0066] According to one example, the base comprises several movable blades, for example, two, three, four, five, six, seven, eight, nine or ten, or a different number, distributed around the fastening element, in particular several movable blades distributed regularly around the fastening element. Preferably, the number of movable blades is between 1 and 4.

[0067] According to one example, the elastically deformable part is formed by the base, at least one of the faces of the base being curved, for example the first face and / or the second face of the base.

[0068] This solution simplifies the manufacturing of the fastening device and reduces costs.

[0069] According to one example, the first face of the base is concave.

[0070] According to an example, when the elastically deformed part is compressed, the part Elastic deformation generates a restoring force opposite to the mounting direction which is less than the retention force allowing the fastener to be held in the fixing hole.

[0071] This prevents the fastener from disengaging from the opening in the structure, especially when the structure's thickness is at the maximum tolerance. There is then a risk that the fastener will not be fully secured in the opening because the fastening lips cannot fully extend. The restoring force of the elastically deformable part is less than the disengagement force. For example, the restoring force is less than or equal to 90% of the disengagement force. For example, the disengagement force is 78 N.

[0072] According to one example, the fastening device comprises at least two elastically deformable parts configured to deform elastically and move at least in a direction parallel to the direction of assembly when a compressive force is applied in the direction of assembly to the elastically deformable part.

[0073] According to one example, the at least two elastically deformable parts of the fastening device are identical.

[0074] According to one example, the at least two elastically deformable parts of the fastening device are different, for example, they differ in at least one of the following characteristics: the shape and / or the thickness and / or the surface and / or the inclination with respect to the first face of the base and / or the inclination with respect to the second face of the base and / or the inclination with respect to the mounting direction and / or the dimension and / or the compressive strength and / or the material and / or the arrangement.

[0075] According to one example, the gripping area has a surface area greater than or equal to 100mm2, in particular greater than or equal to 200mm2 and / or less than or equal to 5,000mm2, in particular less than or equal to 3,000mm2.

[0076] In the description, the designation "elastic deformation part" can be substituted by the designation "spring element", and vice versa.

[0077] The projection of the spring element(s) onto the surface of the base (also called the occupancy surface) is greater than or equal to 0.50%, in particular greater than or equal to 1%, in particular greater than or equal to 5%, in particular greater than or equal to 7% and / or less than or equal to 76%, in particular less than or equal to 50%, in particular less than or equal to 30%.

[0078] The invention also relates to an assembly which includes a fastening device as described above and a structure including a fastening orifice.

[0079] According to one example, the fixing orifice includes a circular, ovoid, oblong, square or rectangular shape.

[0080] According to one example, the fixing hole has a depth, measured perpendicular to at least one of the faces of the structure, which is greater than or equal to 0.2mm, in particular greater than or equal to 0.5mm and / or less than or equal to 7mm, in particular less than or equal to 5mm.

[0081] The invention also relates to a method of using a fastening device as described above, the method comprising the following steps: • provision of a fastening device as described above and a structure including a fastening hole, • Insertion of the fastening element of the fastening device into the fastening hole of the structure in a mounting direction until at least partial contact is made between the elastically deformable part and the structure, then • at least partial compression of the elastically deformable part according to a force parallel to the direction of assembly.

[0082] According to one example, the method of fixing the fixing device to the substrate is exerted by means of a compressive force parallel to the mounting direction which is less than or equal to 50N, preferably less than or equal to 30N.

[0083] The aforementioned features and advantages, as well as others, will become apparent from the following detailed description and examples of embodiments of the fastening device. This detailed description refers to the accompanying drawings. Brief description of the drawings

[0084] The attached drawings are schematic and are intended primarily to illustrate the principles of the exposition.

[0085] On these drawings, from one figure to another, identical elements (or parts of elements) are identified by the same reference signs.

[0086] [Fig-1] Fig. 1 schematically represents a longitudinal section of a a fixing device mounted on a structure and fixed to a wall, according to an embodiment of the invention;

[0087] [Fig.2] Fig.2 schematically represents a fastening device comprising movable fins, according to another embodiment of the invention;

[0088] [Fig.3] The [Fig.3] schematically represents the detail of a movable fin of the [Fig.1];

[0089] [Fig.4] Fig.4 schematically represents two adjacent movable fins, according to another embodiment of the invention;

[0090] [Fig.5] Fig.5 schematically represents a movable fin, according to another embodiment of the invention;

[0091] [Fig.6] Fig.6 schematically represents a movable fin, according to another embodiment of the invention;

[0092] [Fig.7] Fig.7 schematically represents two movable fins, according to another embodiment of the invention;

[0093] [Fig.8] Fig.8 schematically represents a movable fin, according to another embodiment of the invention;

[0094] [Fig.9] Fig.9 schematically represents a movable fin, according to another embodiment of the invention;

[0095] [Fig. 10] The [Fig. 10] schematically represents a movable blade in the shape of a bridge, according to another embodiment of the invention;

[0096] [Fig. 11] Fig. 11 schematically represents a movable blade in the shape of a bridge, according to another embodiment of the invention;

[0097] [Fig. 12] Fig. 12 schematically represents a fastening device comprising several movable bridge-shaped blades, according to another embodiment of the invention;

[0098] [Fig. 13] Fig. 13 schematically represents a fastening device comprising a single movable blade in the shape of a bridge, according to another embodiment of the invention;

[0099] [Fig. 14] Fig. 14 schematically represents a fastening device comprising a single movable blade in the shape of a bridge, according to another embodiment of the invention;

[0100] [Fig. 15] The [Fig. 15] schematically represents a fastening device comprising a base forming an elastically deformable part, according to another embodiment of the invention;

[0101] [Fig. 16] Fig. 16 schematically represents a fastening device comprising a base forming an elastically deformable part, according to another embodiment of the invention. Description of the implementation methods

[0102] To make the explanation more concrete, an example of a fastening device is described in detail below, with reference to the accompanying drawings. It should be noted that the invention is not limited to this example.

[0103] Figure 1 shows a fastening device 1 comprising a base 2 extending along a first direction X and a second direction Y. The fastening device 1 includes a fastening element 3 extending from a first face 4 of the base 2 along a mounting direction Z, perpendicular to the first direction X and the second direction Y. The fastening device 1 includes a gripping area 8 extending over a second face 5 of the base 2, opposite the first face 4.

[0104] The fastening element 3 is intended to be inserted and held in a fastening hole 6 of a structure 7. The structure 7 may be made of metal or plastic. The structure 7 is preferably flat. The base 2 is also substantially flat.

[0105] The fastening device 1 is made of plastic and is produced by an injection molding process. The base 2, the fastening element 3, and the gripping area 8 form a single piece. Alternatively, the base 2 and the fastening element 3 can be produced by an injection molding process such that the base and the fastening element 3 form a single piece. The gripping area 8 can then be formed by hooks and / or loops attached to the second face of the base, for example, by bonding or equivalent.

[0106] The fastening element 3 has an oblong cross-section in this example, and extends along an axis which is parallel to the mounting direction Z. The fastening element 3 comprises a main wall 47 provided with two lips 25 positioned opposite each other, and a central orifice 26 delimited by the main wall 47.

[0107] In the rest position, the two lips 25 are inclined and protrude from the main wall 47 of the fixing element 3, towards the outside of the fixing element 3. The two lips 25 are movable, in particular along a direction parallel to the second direction Y, flexible and elastically deformable.

[0108] The clip-on attachment of the fastening device 1 to the vehicle structure 7 is achieved by pushing the fastening device 1 into the fastening hole 6 in the mounting direction Z, i.e., in a mounting direction M. During the pushing of the fastening device 1, the lips 25 deform as they slide along an edge 27 delimiting the fastening hole 6 and retract towards the central hole 26. The lips 25 then unfold when they have passed through the fastening hole 6 and form a stop against an inner face 28 of the structure 7, which locks the fastening device 1 in the fastening hole 6.

[0109] The gripping area 8 comprises first retaining elements 9a projecting from the second face 5 in a direction opposite to the mounting direction Z, i.e., in a direction opposite to the mounting direction M. The gripping area 8 is intended to hook onto second retaining elements 9b of a restraint device 10 fixed to a wall 24, for example, which may be a vehicle headliner. The second retaining elements 9b project from a base 29 of the restraint device 10.

[0110] The first retaining elements 9a are hooks cooperating with the second retaining elements 9b formed by loops.

[0111] Alternatively, the first retaining elements 9a can be loops cooperating with the second retaining elements 9b formed by hooks.

[0112] The structure 7, the wall 24 and the fastening device 1 form an assembled unit. The assembled unit may include several fastening devices 1.

[0113] The base 2 comprises at least one elastic deformation part 11 configured to deform elastically and move at least in a direction parallel to the mounting direction Z and at least in the mounting direction M, when a compressive force is applied in the mounting direction Z on the elastic deformation part 11.

[0114] According to the examples shown in Figures 1 to 14, the elastically deformable part 11 protrudes from the first face 4 of the base 2 along the mounting direction Z when the elastically deformable part 11 is not compressed. The elastically deformable part 11 is connected to the base 2.

[0115] The base 2 comprises several elastically deformable parts 11 distributed around the fixing element 3, in particular several elastically deformable parts 11 distributed regularly around the fixing element 3.

[0116] In the example of [Fig. 1], the base 2 comprises two elastically deformable parts 11, at least one of the elastically deformable parts 11, in particular each elastically deformable part, comprises a single inclined portion forming an angle of 15° with the first face 4 and / or the second face 5 of the base 2 and / or forming an angle of 75° with the mounting direction Z.

[0117] The elastically deformable part 11 comprises a movable blade 12, 23 having at least a first end 13 connected to the first face 4 of the base 2.

[0118] In the examples in Figures 1 to 6, the movable blade 12, 23 is a movable fin 12 having a proximal end 13 connected to the first face 4 of the base 2 and a distal end 14. The movable fin 12 has a general quadrilateral shape in Figures 1 to 4.

[0119] In the examples in Figures 1 to 4, the movable fin 12 extends in a general direction which is inclined with respect to the first face 4 of the base 2. The movable fin 12 forms an angle α greater than 5° and less than 45°, when the movable fin 12 is not compressed, and as illustrated in [Fig.3].

[0120] For example, each movable fin 12 according to [Fig.3] comprises a single inclined portion forming an angle of 35° with the first face 4 and / or the second face 5 of the base 2 and / or forming an angle of 55° with the mounting direction Z.

[0121] The movable fin 12 is movable in rotation about an axis of rotation R connecting the proximal end 13 of the movable fin 12 to the base 2. The elastic deformation of the movable fin 12 occurs mainly at the proximal end 13 and in the vicinity of the proximal end 13.

[0122] In the example of [Fig.1], each movable fin 12 forms an opening with the first face 4 of the base 2. The opening is oriented outwards from the base 2.

[0123] During the mounting of the fastening device 1 on the structure 7, the fastening element 3 is inserted into the fastening hole 6 in the mounting direction Z. When the fastening element 3 is clipped into the fastening hole 6, the structure 7 exerts a compressive force on the movable fins 12 in the mounting direction Z. The four movable fins 12 deform elastically and move primarily in a direction parallel to the mounting direction Z and in a direction opposite to the mounting direction M.

[0124] The four movable fins 12 each comprise an inner face 32. After assembly, the inner face 32 is closer to the base 2 than before assembly. The inner face 32 may be in contact with the base 2.

[0125] In the example of [Fig.2], the base 2 comprises four elastically deformable parts 11 distributed at the four corners of the base 2 and around the fixing element 3 which is at the center of the base 2. The elastically deformable parts 11 are adjacent to two transverse walls 43, 44 of the base 2 and are contiguous to two longitudinal walls 45, 46 of the base 2. The elastically deformable parts 11 are each positioned at the boundary of one of the longitudinal walls 45, 46.

[0126] Figure [Fig. 2] illustrates a fastening device 1 similar to that of Figure [Fig. 1] to The exception is that each of the four movable fins 12 forms an opening with the first face 4 of the base 2, which is oriented towards the inside of the base 2. The base 2 comprises two series, each formed of two movable fins 12 aligned along the first direction X and which present their respective openings opposite each other.

[0127] At least one of the elastically deformable parts 11, in particular each elastically deformable part, comprises a single inclined portion forming an angle of 10° with the first face 4 and / or the second face 5 of the base 2 and / or forming an angle of 80° with the mounting direction Z.

[0128] Another difference from the example in [Fig. 1] is that the first face 4 of the base 2 comprises four housings 15, each positioned opposite a movable fin 12. Each housing 15 has a shape configured to receive at least part of the movable fin 12. Each housing 15 has a shape complementary to the shape of the movable fin 12. In this example, the housings 15 and the movable fins 12 have a parallelepiped shape.

[0129] The housing 15 has a width and a length at least equal to those of the movable fin 12 in order to ensure the total insertion of the movable fin 12 into the housing 15. Preferably, the housing 15 has a width and a length greater than those of the movable fin 12.

[0130] Each movable fin 12 is movable along the mounting direction Z, between a deployed position in which the movable fin 12 protrudes from the first face 4 of the base 2 when the movable fin 12 is not compressed, and a retracted position in which the movable fin 12 is housed at least partially in the housing 15 when the movable fin 12 is compressed by the pressure exerted by the structure 7 on the movable fin 12, after the mounting of the fastening device 1 on the structure 7.

[0131] The fastening device 1 comprises a fastening element 3 and a gripping area 8 as described previously.

[0132] More specifically, each movable fin 12 comprises a proximal end 13 connected to the first face 4 of the base 2 and adjacent to one of the two transverse walls 43, 44 of the base 2. The proximal end 13 is also distant from said transverse wall 43, 44. Each movable fin 12 comprises a distal end 14 oriented towards another movable fin 12 facing it. Each movable fin 12 comprises a flank 20 along one of the longitudinal walls 45, 46. The flank 20 and the longitudinal wall 45, 46 extend in the same plane parallel to the XZ plane.

[0133] The movable fin 12 includes two corners 50 which can be angular, and form an angle of 90°, for example, as illustrated in figures 2 and 3.

[0134] Alternatively, the corners 50 may form an angle greater than 90° or be rounded.

[0135] The distance between the ends 13, 14 of the movable fin 12 along the first X direction is greater than 2 mm and less than 20 mm, for example. The width of the movable fin 12 along the second Y direction is greater than 2 mm and less than 20 mm, for example.

[0136] According to a variant shown in [Fig. 4], a notch 16 is formed in a connection zone 17 linking the proximal end 13 of the movable fin 12 to a fixed portion 18 of the base 2. The notch 16 increases the flexibility of the movable fin 12. The elastic deformation of the movable fin 12 occurs primarily in this connection zone 17. The base 2 of the fastening device 1 comprises two contiguous movable fins 12. The connection zones 17 of the movable fins 12 are also contiguous.

[0137] The movable fin 12 includes an inclined portion forming an angle of 13° with the first face 4 and / or the second face 5 of the base 2 and / or forming an angle of 77° with the mounting direction Z.

[0138] According to one variant, the movable fins 12 with a notch 16 may not be contiguous and arranged at the four corners of the base 2, as in the example of Figures 1 and 2.

[0139] According to a variant shown in [Fig. 5], the movable fin 12 has a curved shape. The movable fin 12 has a V-shaped cross-section and includes an inner face 32, opposite the base 2, which is flat or formed of flat sections. The movable fin 12 includes a proximal end 13 and a distal end 14. The movable fin 12 includes a proximal portion 33 connected to the base 2 and a distal portion 34 connected to the proximal portion 33 by a vertex 35. The proximal portion 33 and the distal portion 34 form an angle greater than 45° and less than 135° between them. The proximal portion 33 and the distal portion 34 form a concave surface facing the base.

[0140] For example, the proximal portion 33 forms an angle of 35° with the first face 4 and / or the second face 5 of the base 2 and / or forms an angle of 55° with the mounting direction Z. The distal portion 34 extends parallel to the first face 4 and / or the second face 5 of the base 2 and / or in a direction perpendicular to the mounting direction Z. For example, the proximal portion 33 and the distal portion 34 form an angle of 125° with each other.

[0141] According to a variant shown in [Fig. 6], the movable fin 12 has a curved shape and a V-shaped cross-section. The inner face 32 of the movable fin 12 is mainly oriented in a direction parallel to the base 2. The movable fin 12 comprises a proximal end 13 and a distal end 14. The movable fin 12 comprises a proximal portion 33 which is inclined and connected to the base 2, and a distal portion 34 which is inclined and connected to the proximal portion 33 by a vertex 35.

[0142] For example, the inclined proximal portion 33 forms an angle of 30° with the first face 4 and / or the second face 5 of the base 2 and / or forms an angle of 60° with the mounting direction Z. The inclined distal portion 34 forms an angle of 30° with the first face 4 and / or the second face 5 of the base 2 and / or forms an angle of 60° with the mounting direction Z. The first portion 33 and the second portion 34 form an angle greater than 20° and less than 90°, in particular an angle of 60°.

[0143] According to a variant shown in [Fig. 7], the movable fin 12 has a curved shape and a V-shaped cross-section. The movable fin 12 comprises an external face 36, oriented in a direction opposite to the base 2, which is concave. The movable fin 12 comprises a first distal portion 34 and a second distal portion 34' connected to a proximal end 13 or a vertex 35. Each distal portion 34 comprises a distal end 14'. The first distal portion 34 and the second distal portion 34' form an angle greater than 90° and less than 180°, for example, 110°. The movable fin 12 is connected to the base 2 by the vertex 35, which is at the center of the movable fin 12. The movable fin 12 comprises two free ends 13, 14.

[0144] The first distal portion 34 and the second distal portion 34' each form an angle (the smallest) of 35° with the first face 4 and / or the second face 5 of the base 2 and / or form an angle (the smallest) of 55° with the mounting direction Z.

[0145] According to a variant shown in [Fig. 8], the movable fin 12 has a curved shape and a Y-shaped cross-section. The movable fin 12 comprises an external face 36, oriented in a direction opposite to the base 2, which is concave. The movable fin 12 comprises a first distal portion 34 and a second distal portion 34' connected by a vertex 35. The vertex 35 is at the center of the movable fin 12. The first distal portion 34 and the second distal portion 34 are perpendicular to the first and / or second face of the base and / or parallel to the mounting direction and form an angle greater than 20° and less than 150°, in particular 90°. The movable fin 12 is connected to the base 2 by a proximal portion 33 connected to the apex 35. The movable fin 12 comprises two distal ends 14, 14' and a proximal end 13.

[0146] Each distal portion 34, 34' forms an angle of 45° with the first face 4 and / or the second face 5 of the base and / or forms an angle of 45° with the mounting direction Z. According to a variant shown in [Fig.9], the movable fin 12 has a horseshoe shape and includes a first proximal end 13 and a second proximal end 13' connected to a distal end 14 and crossed by an opening 38.

[0147] The movable fin 12 comprises a single inclined portion, presenting a general U-shape, an inverted U, or a horseshoe shape. The inclined portion forms a 25° angle with the first face 4 and / or the second face 5 of the base and / or forms a 65° angle with the mounting direction Z. The movable fin 12 here has two connections to the base 2, the two connections being spaced apart.

[0148] Alternatively, the shape could be different so that it has a common connection at base 2 and two free ends while retaining a general U or inverted U or horseshoe shape.

[0149] According to a variant shown in [Fig. 10], the movable blade 12, 23 is a bridge-shaped movable blade 23 comprising a first proximal end 13 and a second proximal end 13', opposite the first proximal end 13. The proximal ends 13, 13' are separated and connected to the base 2 or to the first face 4 of the base 2. The bridge-shaped movable blade 23 has a convex face 19 oriented in a direction opposite to the first face 4 and a concave face 21 positioned opposite the first face 4 of the base 2. A cavity 22 is formed between the bridge-shaped movable blade 23 and the first face 4 of the base 2.

[0150] The bridge-shaped movable blade 23 comprises a first proximal portion 33 and a second proximal portion 33' connected to each other by a distal end 14 forming a vertex 35. The bridge-shaped movable blade 23 has an overall V-shaped cross-section. The bridge-shaped movable blade 23 has an undulation or a curvature.

[0151] Each proximal portion 33, 33' forms a single inclined portion. The inclined portion has a general V or inverted V or U or inverted U shape, the inclined portion forming an angle of 15° with the first face and / or the second face of the base and / or forming an angle of 75° with the mounting direction Z. The angle of the inclined portion is measured from a straight line passing through a proximal end 13, 13' of the inclined portion and which is tangent to the inclined portion and / or to the elastically deformable part.

[0152] The first face 4 of the base 2 includes a housing 15 associated with the movable bridge-shaped blade 23 and positioned opposite the movable bridge-shaped blade 23. The housing 15 has a shape configured to receive at least part of the movable bridge-shaped blade 23. The housing 15 has a parallelepiped shape. The housing 15 extends from the first proximal end 13 to the second proximal end 13' of the movable bridge-shaped blade 23 along the first X direction and at least across the entire width of the movable bridge-shaped blade 23 along the second Y direction. Alternatively, the housing could have a different shape and / or arrangement.

[0153] The movable bridge-shaped blade 23 is movable along the mounting direction Z, between a deployed position in which the movable bridge-shaped blade 23 protrudes from the first face 4 of the base 2 when the movable bridge-shaped blade 23 is not compressed, and a retracted position in which the movable bridge-shaped blade 23 is housed at least partially in the housing 15 when the movable bridge-shaped blade 23 is compressed by the pressure exerted by the structure 7 on the movable bridge-shaped blade 23, after the mounting of the fastening device 1 on the structure 7.

[0154] According to a variant shown in [Fig. 11], the bridge-shaped movable blade 23 comprises a first proximal end 13 and a second proximal end 13', opposite the first proximal end 13, which are connected to the base 2 or to the first face 4 of the base 2. The bridge-shaped movable blade 23 has a convex face 19 oriented in a direction opposite to the first face 4 and a concave face 21 positioned opposite the first face 4 of the base 2. A cavity 22 is formed between the bridge-shaped movable blade 23 and the first face 4 of the base 2. The bridge-shaped movable blade 23 includes undulations, i.e., it comprises two vertices 39, forming either two distal ends, separated by a valley 40. Each vertex 39 forms a contact area arranged to be in contact with the structure.

[0155] The bridge-shaped movable blade 23 comprises a first proximal portion 33 and a second proximal portion 33' connected to each other by the two vertices 39 and the valley 40. The bridge-shaped movable blade 23 has a general shape of M or inverted M or W or inverted W.

[0156] Each proximal portion 33, 33' forms a single inclined portion.

[0157] Each inclined portion forms an angle of 21° with the first face 4 and / or the second face 5 of the base 2 and / or forms an angle of 69° with the mounting direction Z, the angle of the inclined portion being measured from a straight line passing through a proximal end 13, 13' of one of the inclined portions and being tangent to the inclined portion and / or to the elastically deforming part.

[0158] The first face 4 of the base 2 includes a housing 15 similar to that of the example in [Fig.10].

[0159] According to an embodiment shown in [Fig. 12], the fastening device 1 comprises a "fir tree" type fastening element 3 having a central portion 41 extending from the first face 4 of the base 2 in the mounting direction Z (following the mounting direction M). The central portion 41 comprises four alignments of lips 25 which are opposed in pairs. The lips 25 project from the central portion 41 and are inclined relative to the mounting direction Z, towards the base 2. The central portion 41 includes an end 42 having a triangular cross-section.

[0160] In this example, the base 2 comprises four movable bridge-shaped blades 23 evenly distributed around the central portion 41 and positioned at the four corners of the base 2. Each movable bridge-shaped blade 23 has a circular arc-shaped cross-section. Each movable bridge-shaped blade 23 comprises a first proximal end 13 and a second proximal end 13', opposite the first proximal end 13. The proximal ends 13, 14 are connected to the first face 4 of the base 2. The movable bridge-shaped blade 23 has a convex face 19 oriented in a direction opposite to the first face 4 and a concave face 21 positioned opposite the first face 4 of the base 2. A cavity 22 is formed between the movable bridge-shaped blade 23 and the first face 4 of the base 2.

[0161] Each movable bridge-shaped blade 23 has a general bridge shape comprising two connections at the base, the two connections being spaced apart. Each movable bridge-shaped blade 23 has two inclined portions and has a general U or inverted U shape. Each inclined portion forms an angle of 67° with the first face 4 and / or the second face 5 of the base and / or forms an angle of 23° with the mounting direction Z, the angle of the inclined portion being measured from a straight line passing through a proximal end 13, 13' of the inclined portion and tangent to the inclined portion and / or to the elastically deformable part.

[0162] The first face 4 of the base 2 comprises four recesses 15 similar to those in the examples of Figures 10 and 11. Each recess 15 is positioned opposite one of the movable bridge-shaped blades 23. The recess 15 extends from the first proximal end 13 to the second proximal end 13' of the movable bridge-shaped blade 23 along the first X direction, and over a width at least equal to that of the movable bridge-shaped blade 23 along the second Y direction. The recess 15 therefore extends along a plane parallel to the XY plane and opens from the base 2 through a transverse wall 43, 44 of the base 2 and through a longitudinal wall 45, 46 of the base 2, perpendicular to the transverse wall 43, 44. The first end 13 of the movable bridge-shaped blade 23 is contiguous with the transverse wall 43, 44. The movable bridge-shaped blade bridge 23 includes a side 20 which is adjacent to the longitudinal wall 44, 46.

[0163] The fastening device 1 includes a hooking area 8 extending over a second face 5 of the base 2, opposite the first face 4. The hooking area 8 includes first retaining elements 9a projecting from the second face 5 in a direction parallel and opposite to the mounting direction Z, and which are intended to hook onto second retaining elements of a wall which may be a vehicle roof lining, for example.

[0164] Figure 13 illustrates an embodiment in which the fastening device 1 comprises a single movable bridge-shaped blade 23 extending along a first transverse wall 43 of the base 2 along the second direction Y, from a first longitudinal wall 45 of the base 2 to a second longitudinal wall 46 of the base 2. The movable bridge-shaped blade 23 extends over the entire width of the base 2. The movable bridge-shaped blade 23 has a longitudinal section in the shape of an arc of a circle.

[0165] The first face 4 of the base 2 includes a housing 15 positioned opposite the movable bridge-shaped blade 23 and which extends over the entire width of the base 2.

[0166] The movable bridge-shaped blade 23 has a convex face 19 oriented towards a direction opposite to the housing 15 and a concave face 21 positioned opposite the housing 15. A cavity 22 is formed between the movable bridge-shaped blade 23 and the housing 15.

[0167] The bridge-shaped movable blade 23 includes a first proximal end 13 which runs along the first transverse wall 43 of the base 2. The bridge-shaped movable blade 23 extends from the first proximal end 13 to a second proximal end 13' along the first direction X, forming an arc of a circle.

[0168] The movable bridge-shaped blade 23 comprises two inclined portions forming a general bridge shape with two connections at the base, the two connections being spaced apart. Each inclined portion has a general U or inverted U shape and forms an angle of 14° with the first face 4 and / or the second face 5 of the base and / or an angle of 76° with the mounting direction Z. The angle of the inclined portion is measured from a straight line passing through a proximal end 13, 13' of the inclined portion and tangent to the inclined portion and / or to the elastically deformable part.

[0169] The fastening device 1 includes a fastening element 3 which is adjacent to a second transverse wall 44 of the base 2. The fastening element 3 is similar to that of [Fig.1].

[0170] The fastening element 3 has an oblong cross-section in this example, and extends along the mounting direction Z. The fastening element 3 comprises a main wall 47 provided with two lips 25 positioned opposite each other and a central orifice 26 delimited by the main wall 47.

[0171] The fastening device 1 includes a gripping area (not shown) extending over a second face of the base 2, opposite the first face 4. The gripping area includes first retaining elements projecting from the second face in a direction parallel and opposite to the mounting direction Z, and which are intended to hook onto second retaining elements of a wall.

[0172] Figure 14 illustrates an embodiment in which the fastening device 1 comprises a single movable bridge-shaped blade 23 extending along a first transverse wall 43 of the base 2 in the second direction Y, from a first proximal end 13 which is adjacent to a first longitudinal wall 45 of the base 2 to a second proximal end 13' of the bridge-shaped movable blade 23 which is adjacent to a second longitudinal wall 46 of the base 2. The bridge-shaped movable blade 23 includes a flank 20 which runs along the first transverse wall 43 of the base 2. The bridge-shaped movable blade 23 extends along the second direction Y forming an arc of a circle.

[0173] The movable bridge-shaped blade 23 extends almost over the entire width of the base 2.

[0174] The first face 4 of the base 2 includes a housing 15 positioned opposite the movable bridge-shaped blade 23 and which extends over the entire width of the base 2.

[0175] The movable bridge-shaped blade 23 has a convex face 19 oriented towards a direction opposite to the housing 15 and a concave face 21 positioned opposite the housing 15. A cavity 22 is formed between the movable bridge-shaped blade 23 and the housing 15.

[0176] The fastening device 1 includes a fastening element 3 which is adjacent to a second transverse wall 44 of the base 2. The fastening element 3 is similar to that of [Fig.1].

[0177] The fastening element 3 has an oblong cross-section in this example, and extends along the mounting direction Z. The fastening element 3 comprises a main wall 47 provided with two lips 25 positioned opposite each other and a central orifice 26 delimited by the main wall 47.

[0178] The fastening device 1 includes a gripping area (not shown) extending over a second face of the base 2, opposite the first face 4. The gripping area includes first retaining elements projecting from the second face in a direction parallel and opposite to the mounting direction Z, and which are intended to hook onto second retaining elements of a wall.

[0179] According to another example not shown, the bridge shape may have a different number of connections with the base, for example a single connection or three, four or more connections with the base, for example four connections with the base by providing openings between the connections of the bridge to the base.

[0180] Alternatively, the fastening devices 1 shown in figures 10 to 14 may not include housings 15.

[0181] For each example, the height of the housings 15 corresponds approximately to the thickness of the movable bridge-shaped blades 23. Alternatively, the height of the housing could be different from those shown in the figures.

[0182] In the examples in Figures 13 and 14, the base 2 of the fastening device 1 may include at least two movable bridge-shaped blades 23, and optionally at least two housings 15 associated with the respective movable bridge-shaped blades 23.

[0183] According to one variant (not shown), the base 2 may comprise a combination of at least one movable fin 12 and at least one movable bridge-shaped blade 23.

[0184] According to a variant shown in [Fig. 15], the fastening device 1 comprises an elastically deformable portion 11 formed by the base 2. The base 2 is curved such that the first face 4 of the base 2 is concave and the second face 5 of the base 2 is convex. The base 2 is curved with a radius of curvature extending generally along the first direction X, so as to allow it to be flexible when compressed. The thickness of the base 2 is substantially constant.

[0185] Alternatively, the base 2 can be curved with a radius of curvature extending globally along the second direction Y.

[0186] The elastically deformable part 11 (or the base 2) is movable, along the mounting direction Z (or the mounting direction M), between a rest position in which the elastically deformable part 11 has a maximum radius of curvature, when it is not compressed against a wall, and a compressed position in which the elastically deformable part 11 is not curved or has a radius of curvature less than the maximum radius of curvature, when the elastically deformable part 11 is compressed against a wall.

[0187] The fastening device 1 includes a fastening element 3 which is positioned at the center of the base 2.

[0188] The fastening element 3 is similar to that of [Fig. 12]. The fastening element 3 is of the "fir tree" type and comprises a central portion 41 extending from the first face 4 of the base 2 in the mounting direction Z (following the mounting direction M). The central portion 41 comprises four alignments of lips 25 which are opposite in pairs. The lips 25 project from the central portion 41 and are inclined relative to the mounting direction Z, towards the base 2. The central portion 41 comprises an end 42 having a triangular cross-section.

[0189] The fastening device 1 includes a gripping area 8 extending over the second face 5 of the base 2 and which includes first retaining elements 9a projecting from the second face 5 in a direction parallel and opposite to the mounting direction Z.

[0190] According to a variant shown in [Fig.16], the fastening device 1 includes an elastically deformable part 11 which is formed by the base 2.

[0191] Only the first face 4 of the base 2 is curved. The first face 4 of the base 2 is concave. The second face 5 of the base 2 is not curved. The second face 5 of the base 2 is flat.

[0192] The first face 4 of the base 2 is curved with a radius of curvature extending globally along the first direction X so as to allow it to be flexible when it is compressed. The thickness of the base 2 varies along the first direction X.

[0193] The base 2 has a general parallelepiped shape. The base 2 comprises a central part 48 and two opposing end parts 49, which are thicker than the central part 48 along the mounting direction Z.

[0194] The first face 4 of the base 2 includes two end edges 51 which project out over the first face 4 along the mounting direction Z.

[0195] The fastening device 1 includes a fastening element 3 which is positioned at the center of the base 2.

[0196] The fastening element 3 is similar to that shown in Figures 12 and 15. The fastening element 3 is of the "fir tree" type and comprises a central portion 41 extending from the first face 4 of the base 2 in the mounting direction Z. The central portion 41 comprises four rows of lips 25 which are arranged in opposing pairs. The lips 25 project from the central portion 41 and are inclined relative to the mounting direction Z, towards the base 2. The central portion 41 comprises an end 42 having a triangular cross-section.

[0197] The fastening device 1 includes a gripping area 8 extending over the second face 5 of the base 2 and which includes first retaining elements 9a projecting from the second face 5 in a direction parallel and opposite to the mounting direction Z.

[0198] Regardless of the embodiment presented above, when the elastically deformable part 11 is compressed, it generates a restoring force antagonistic to the mounting direction Z which is less than the retention force allowing the fixing element 3 to be held in the fixing hole 6.

[0199] By way of example, the base 2 has a thickness greater than 0.5 mm and less than 2.5 mm, and preferably on the order of 1.5 mm. The first retaining elements 9a may be hooks having a height greater than 0.4 mm and less than 1.4 mm.

[0200] When the base 2 is a parallelepiped, it has a length greater than 18 mm and less than 50 mm and a width greater than 18 mm and less than 25 mm. The area of ​​the base 2 is greater than 324 mm² and less than 1250 mm².

[0201] The base 2 may be disc-shaped with a diameter greater than 25 mm and less than 50 mm. The surface area of ​​the circular base is greater than 490 mm² and less than 1964 mm².

[0202] The fastening device 1 has a height, along the mounting direction Z, that is greater than 10 mm and less than 23.9 mm. The structure 7 has a thickness greater than 1.3 mm and less than 2.2 mm. The fastening device 1 allows for the absorption of a gap (or play) between the base 2 and the structure 7, which is a preference of approximately 0.9 mm. The gap to be absorbed in order to reduce vibrations is therefore greater than 3.8% and less than 9% of the total height of the fixing device 1.

[0203] The movable blade 12, 23 has a thickness greater than 0.2 mm and less than 1 mm, for example.

[0204] The thickness of the base 2 and the thickness of the movable blade 12, 23 are adjusted to prevent the fastener 3 from disengaging from the opening 6 in the structure 7, especially when the thickness of the structure 7 is at the maximum tolerance. If the fastener 3 is not fully secured in the opening 6 of the structure 7 because the lips 25 cannot fully extend, the fastener 3 may then disengage from the structure 7.

[0205] The movable blade 12, 23 has a width greater than 2 mm and less than 25 mm, for example. The width is approximately 25 mm when the movable blade 12, 23 is a bridge-shaped movable blade 23 that extends from one end to the other of the base 2.

[0206] The movable blade 12, 23 has a maximum mobility capacity between a rest position and a compressed position greater than 0.1 mm, 0.2 mm, 0.4 mm and / or less than 1.2 mm, 1.0 mm, 0.8 mm. The mobility capacity refers to the displacement of the portion of the movable blade 12, 23 furthest from the first face 4 of the base 2 along an axis parallel to the mounting direction Z. The distance between the portion of the movable blade 12, 23 furthest from the first face 4 of the base 2 and the first face 4 is greater than 0.1 mm and less than 1.2 mm.

[0207] For a movable fin 12, the part of the movable fin 12 that is furthest from the first face 4 of the base 2 is the second free end 14 of the movable fin 12. For a movable bridge-shaped blade 23, the part of the movable bridge-shaped blade 23 that is furthest from the first face 4 of the base 2 is the central part of the movable bridge-shaped blade 23.

[0208] The movable blade 12, 23 forms an angle α greater than 5° and less than 45°, when the movable blade 12, 23 is not compressed (at rest).

[0209] The number of movable blades 12, 23 per fixing device 1 can be between 1 and 10 for example, and preferably between 1 and 4.

[0210] The projection of the movable blades 12, 23 and / or of the elastically deformable part(s) onto the first face 4 of the base 2 is greater than 0.50%. For example, for a small movable fin 12 having a width of 2 mm and a length of 4 mm, i.e. a surface area of ​​8 mm2, and a first face 4 having the largest area of ​​1250 mm2, the overlap by the movable fin 12 is 0.64%.

[0211] The covering of the movable blades 12, 23 and / or of the deformable part(s) The elasticity on the first face 4 of base 2 is, in particular, greater than 1%, greater than 5%, greater than 7%, and / or less than 76%. The 76% overlap corresponds to two movable fins 12, each with a surface area of ​​950 mm2, and a first face 4 with an area of ​​1250 mm2. The overlap is notably less than 50%, and notably less than 30%.

[0212] Alternatively, the base 2 may comprise two movable fins 12 facing each other with their second ends 14 which are distanced at rest and their second ends 14 which come together to form a bridge when the two movable fins 12 are under stress.

[0213] The fastening device can find a specific application in various fields such as building and / or automotive and / or rail and / or naval, in particular the field of vehicles, in particular for the fastening of trim, for example roof trims to a vehicle structure and / or inside a passenger compartment, in particular the field of motor vehicles.

[0214] Although the present invention has been described with reference to specific embodiments, it is evident that modifications and changes can be made to these examples without departing from the general scope of the invention as defined by the claims. In particular, individual features of the various embodiments illustrated / mentioned can be combined in additional embodiments. Therefore, the description and drawings should be considered in an illustrative rather than a restrictive sense.

Claims

Demands

1. A fastening device (1) comprising: - a base (2), - a fastening element (3) extending from a first face (4) of the base (2) in a mounting direction (Z), and intended to be inserted and held in a fastening orifice (6), and - a gripping area (8) extending over a second face (5) of the base (2), opposite the first face (4), the gripping area (8) comprising first retaining elements (9a) projecting from the second face (5) in a direction opposite to the base (2), and intended to hook onto second retaining elements (9b), wherein the base (2) comprises at least one elastically deformable part (11) configured to deform elastically and move at least in a direction parallel to the mounting direction (Z) when a compressive force is applied in the mounting direction (Z) to the elastically deformable part (11).

2. A fastening device (1) according to claim 1, wherein the elastically deformable part (11) extends from the base (2) and protrudes at least partially beyond a plane perpendicular to the mounting direction (Z) passing through at least a portion of the first face (4) of the base (2) when the elastically deformable part (11) is not compressed.

3. Fixing device (1) according to claim 1 or 2, wherein the elastically deformable part (11) comprises a movable blade (12, 23) having a first proximal end (13) connected to the base (2), in particular to the first face (4) of the base (2), and at least one distal end (14, 14') distant from the base (2), in particular distant from the first face (4) of the base (2), the distal end (14, 14') of the base (2) being intended to be in contact with a structure (7).

4. A fastening device (1) according to claims 1 to 3, wherein the elastically deformable part (11) comprises at least one inclined portion extending in a general direction that is inclined with respect to a plane parallel to the first face (4) of the base (2) and / or that is inclined with respect to a plane parallel to the second face (5) of the base (2) and / or which is inclined with respect to the mounting direction (Z).

5. Fixing device (1) according to any one of claims 3 to 4, wherein a notch (16) is formed in a linking zone (17) connecting the first proximal end (13) of the blade (12, 23) to a fixed part (18) of the base (2).

6. Fixing device (1) according to claim 2, wherein the movable blade (23) comprises a first proximal end (13) and a second proximal end (13'), opposite the first proximal end (13), the first proximal end (13) and the second proximal end (13') being connected to the base (2), in particular to the first face (4) of the base (2), and being connected to each other by at least one distal end (14, 39, 40).

7. A fastening device (1) according to any one of claims 3 to 6, wherein the first face (4) of the base (2) comprises at least one housing (15) positioned opposite the movable blade (12, 23), the housing (15) having a shape configured to receive at least part of the movable blade (12, 23), the movable blade (12, 23) being movable, along the mounting direction (Z), between a deployed position in which the movable blade (12, 23) protrudes from the first face (4) of the base (2) when the movable blade (12, 23) is not compressed, and a retracted position in which the movable blade (12, 23) is housed at least partially in the housing (15) when the movable blade (12, 23) is compressed.

8. A fastening device (1) according to any one of claims 3 to 7, wherein the base (2) comprises several movable blades (12, 23) distributed around the fastening element (3), in particular several movable blades (12, 23) distributed regularly around the fastening element (3).

9. Fixing device (1) according to claim 1, wherein the elastically deformable part (11) is formed by the base (2), at least one of the faces (4, 5) of the base (2) being curved.

10. A fastening device (1) according to any one of claims 1 to 9, wherein when the elastically deformable part (11) is compressed, the elastically deformable part (11) generates a restoring force opposite to the mounting direction (Z) which is less than the retention force enabling the fastening element (3) to be held in the fastening orifice (6).

Images