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 into and held in a fastening opening, and a gripping zone (8) extending over a second face (5) of the base, opposite the first face, the gripping zone comprising first retaining elements (9a) projecting from the second face in a direction parallel to and opposite the mounting direction and being intended to engage with second retaining elements. The base comprises at least one elastically deformable portion (11) configured to deform elastically and to move at least in a direction parallel to the mounting direction when a compressive force is applied to the elastically deformable portion in the mounting direction.

Description

Description Title of the invention: Fixing device Technical Field

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

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

[0003] These fastening devices are typically produced by injection molding and comprise a base and a fastening element extending from one face of the base. The fastening element is designed to be inserted and held in a mounting hole in the vehicle structure. The fastening element may be a clip with two opposing lips or a "fir tree" type clip with 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 expand once they have passed through the mounting hole, locking the fastening device into place within the structure.

[0005] The fastening device includes a hook-and-loop area extending across a second face of the base, opposite the first face. This hook-and-loop area comprises initial retaining elements designed to engage with secondary retaining elements of a designated attachment point on a vehicle headliner, for example. The first and second retaining elements may be hooks or loops. This hook / loop combination secures the headliner to the fastening device and, consequently, to the vehicle's roof structure.

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

[0007] In addition to these flatness defects, there are also structural tolerances. In particular, when the structure's thickness is at the minimum tolerance, a gap can develop between the base of the fixing device and the structure, resulting in movement between the base of the fixing device and the structure.

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

[0009] The invention therefore aims to resolve at least partially these drawbacks by proposing a fastening device that reduces or eliminates noise in a vehicle's interior 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 along a The base comprises a mounting direction, designed to be inserted and held in a fastening hole, and a gripping area extending over at least a portion of a second face of the base, opposite the first face. The gripping area includes first retaining elements projecting from the second face in a direction opposite to the base, and designed to grip onto second retaining elements. The base includes 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 along the mounting direction to the elastically deformable portion, particularly when the fastening element is inserted into the fastening hole.

[0011] The first retaining elements protrude from at least part of the second face, notably in a direction parallel (or substantially parallel) and opposite to the direction of assembly.

[0012] The elastically deformable part exerts a force on the vehicle structure along the mounting direction, thus tensioning the base against the structure and reducing the relative movement of the mounting device's base with respect to the structure's surface. This immobilizes the mounting device's base relative to the structure through continuous contact between the elastically deformable part and the structure's surface.

[0013] The elastically deformable section eliminates play between the base of the mounting device and the structure along the mounting direction, thus eliminating 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 reduces or eliminates noise in a vehicle's interior due to vibrations of the fastening device.

[0015] Vibrations are suppressed across 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 section, securing the fastener during installation is easier and more consistent. The installer can immediately see if the fastener is properly secured by the absence of any movement. This gives them a sense of confidence during installation.

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

[0018] According to an example, the force exerted by the elastically deforming part on the structure is the result of the connection between the base and the structure.

[0019] According to one example, the compression force according to the invention is the result of a cooperation of the fastening device with the fastening orifice, for example the fastening orifice of the structure, in particular a cooperation between the fastening device and the structure.

[0020] In one example, the base comprises a fixed part, separate from the elastically deformable part; specifically, the fixed part of the base forms a support for the elastically deformable part of the base. The first face is positioned on the fixed part of the base (or the support). The elastically deformable part is movable relative to the fixed part of the base.

[0021] In one example, the fixing element extends from the first face of the fixed part of the base in a Z mounting direction, and is intended to be inserted and held in a fixing hole.

[0022] In one example, the gripping area extends over the second face of the fixed part of the base, opposite the first face, the gripping area comprising the first retaining elements protruding from the second face in a direction opposite to the fixed part of the base, and intended to hook onto second retaining elements.

[0023] According to one example, the elastically deformable part extends along the mounting direction from the fixed part of the base and protrudes at least partially from the first face of the fixed part of the base when the elastically deformable part is not compressed.

[0024] The term "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 subjected to a compressive force, in particular a compressive force along the direction of assembly.

[0025] In other words, when the elastically deformable part is not compressed, the elastically deformable part extends from the fixed part of 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 fixed part of the base, which part of the first face of the fixed part of the base to be considered being that arranged under the fixing element and / or that arranged near the fixing element and / or that arranged near the elastically deformable part.

[0026] 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 fixed part of the base and / or which is inclined with respect to a plane parallel to the second face of the fixed part of the base and / or which is inclined with respect to the mounting direction.

[0027] According to an 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 fixed part of the base (and / or to the second face of the fixed part of the base) so that an angle (or minimum angle) greater than or equal to 5° is formed, 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° when the elastically deforming part is at rest.

[0028] As an example, the elastically deformable part is configured to be inclined relative to a plane parallel to the first face of the fixed part of the base, after the fastening device is installed on the vehicle structure, at an angle greater than 5° so that the first face of the fixed part is not in contact with the structure on which the fastening device is mounted. This helps to prevent vibrations.

[0029] In other words, the elastically deformable part is constantly inclined with respect to a plane parallel to the first face of the fixed part of the base, whether or not the fixing device is mounted on the vehicle structure.

[0030] For example, "minimum angle" means the smallest angle formed between two directions, or between a direction and a plane, or between two planes.

[0031] According to an 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.

[0032] According to an 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.

[0033] According to an example, at least one inclined portion extending along a general direction which is inclined relative to the mounting direction so that an angle (or minimum angle) greater than or equal to 15° is formed, 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°.

[0034] According to one example, at least one inclined portion exhibits, according to at least one cross-sectional view perpendicular to the first and / or second face of the fixed part of the base, a straight or curved shape, for example a U or inverted U shape, a V or inverted V shape, an M or inverted M shape, or in the shape of a W or an inverted W or an L shape or an inverted L or even a J shape or an inverted J.

[0035] According to one example, at least one inclined portion includes 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.

[0036] According to one example, at least one inclined portion includes a thickness e which is greater than or equal to 0.1 mm, in particular greater than or equal to 0.2 mm and / or less than or equal to 1.5 mm, in particular less than or equal to 1 mm, the thickness being measured along a line perpendicular to at least one of the first and / or second faces of the inclined portion.

[0037] According to an 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 being 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.

[0038] According to one example, the elastically deformed part includes a first inclined portion and a second portion connected to the first inclined portion.

[0039] According to one example, the first inclined portion and the second portion are distinct.

[0040] According to an example, the first inclined portion and the second portion are symmetrical along at least one plane.

[0041] According to an example, the first inclined portion and the second portion are symmetrical with respect to a plane perpendicular to the first face of the fixed part of the base and / or with respect to a plane perpendicular to the second face of the fixed part of the base and / or with respect to a plane including a line parallel to the direction of assembly.

[0042] According to one example, the first inclined portion and the second portion are different; for example, they differ in at least one of the characteristics the following: the shape and / or thickness and / or surface and / or inclination with respect to the first face of the base and / or inclination with respect to the second face of the base and / or inclination with respect to the mounting direction and / or dimension and / or compressive strength and / or material and / or arrangement and / or orientation.

[0043] According to one example, the second portion is a second inclined portion.

[0044] According to an 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 the second inclined portion.

[0045] According to an example, the second portion is a portion extending parallel to the mounting direction and / or perpendicular to the first face of the fixed part of the base and / or perpendicular to the second face of the fixed part of the base.

[0046] 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.

[0047] 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.

[0048] According to an example, the second portion has a thickness equal to or equivalent to the first inclined portion, an equivalent thickness being a thickness with a difference less than or equal to 10%.

[0049] According to an example, the elastically deformed part exhibits a thickness differential (corresponding to the ratio: (e ma x - e m in) / ( e m(in)) which 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 can be equal to 0, the thickness being constant.

[0050] In an example, the elastically deformed portion has a thickness difference of 3 mm or less, in particular 2 mm or less, in particular 1.5 mm or less, in particular 1.0 mm or less. The thickness difference may be 0 mm, the thickness being constant. In particular, the thickness difference between the first inclined portion and the second portion (in particular between the first inclined portion and the second inclined portion) is 3 mm or less, in particular 2 mm or less, in particular 1.5 mm or less, in particular 1.0 mm or less. The thickness difference may be 0 mm, the thickness being constant.

[0051] According to an example, the elastically deforming 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.

[0052] According to one example, the portions, especially the inclined portions, are delimited by a change of angle and / or by an edge.

[0053] According to one example, the elastically deformable part includes a movable blade having a first proximal end connected to the fixed part of the base, in particular to the first face of the fixed part of the base, and at least one distal end distant from the fixed part of the base, in particular distant from the first face of the fixed part of the base, the distal end being intended to be in contact with a structure, in particular to receive the compressive force exerted by the structure.

[0054] According to one example, the elastically deformable part includes a single proximal end, the elastically deformable part and / or the movable blade forming in particular a fin or a movable fin.

[0055] For example, a straight line passing through a proximal end of the elastically deformed part and a distal end of the elastically deformed part forms an angle (or minimum angle) with the first face of the part fixed of the base and / or the second face of the fixed part of the base, which is 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°.

[0056] 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 fixed part of the base, in particular to the first face of the fixed part of the base and being connected to each other by at least one distal end, opposite the fixed part of the base, in particular to the first face of the fixed part of the base.

[0057] According to one example, the second proximal end is then distinct and / or distant from the first proximal end, the elastically deforming part and / or the movable blade forming in particular a bridge, in particular a movable bridge.

[0058] In one example, the elastically deformable part has at least one external face arranged on the opposite side to the first face of the fixed part of the base and which is convex, and at least one internal face positioned opposite the first face of the fixed part of the base and which is concave. A cavity is formed between the movable blade and the first face of the fixed part of the base.

[0059] According to one example, at least one distal end is arranged between the first proximal end and the second proximal end.

[0060] According to one example, the elastically deformable part includes at least one first distal end and at least one second distal end.

[0061] 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 or curved line, or a point or a circle or a square or a rectangle or a crescent moon or an arc of a circle or any other shape.

[0062] For example, the elastically deformable part has a parallelepiped shape. The distal end then has a straight line extending parallel to the first face of the fixed part of the base. This optimizes the contact area between the distal end and the structure on which the fastening device is mounted, thus reducing vibrations.

[0063] According to an example, the inclined portion forms a proximal inclined portion connected to the fixed part of the base, in particular connected to the first face of the fixed part of the base and / or the first inclined portion forms a first proximal inclined portion connected to the fixed part of the base, in particular connected to the first face of the fixed part of the base.

[0064] According to one example, the second portion forms a proximal portion connected to the fixed part of the base, specifically to the first face of the fixed part of the base.

[0065] According to one example, the second inclined portion forms a proximal portion connected to the fixed part of the base, specifically to the first face of the fixed part of the base.

[0066] According to one example, the second portion, in particular the second inclined portion, forms a distal portion arranged at a distance from the fixed part of the base, in particular at a distance from the first face of the fixed part of the base, in particular the distal portion of the fixed part of the base being arranged to be in contact with a structure.

[0067] According to an 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 fixed part of the base.

[0068] According to an example, the angle (or minimum 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°.

[0069] According to one example, the first inclined portion and the second portion form an angle (or minimum angle) different from 90°.

[0070] According to one example, the first inclined portion and the second inclined portion form an angle (or minimum angle) equal to 90°.

[0071] According to one example, the elastically deformable part includes a movable blade having at least a proximal portion connected to the fixed part of the base, in particular to the first face of the fixed part of the base, and a distal portion distant from the fixed part of the base, in particular distant from the first face of the fixed part of the base, the distal portion being intended to be in contact with a structure.

[0072] According to one example, a notch is formed in a bonding zone connecting the elastically deformable part to the fixed part of the base.

[0073] As an example, a notch is formed in a connection zone linking the first proximal end of the moving blade to the fixed part of the base. The notch improves the mobility of the moving blade. Thus, for the same displacement of the elastically deforming part, a lower force is required.

[0074] According to one example, the elastically deformable part is movable along the mounting direction Z between a deployed position in which the elastically deformable part is not compressed, and a retracted position in which the elastically deformable part is compressed, a projection distance of the elastically deformable part being defined as the maximum projection height along the mounting direction from the fixed part of the base, the elastically deformable part projecting from the first face of the fixed part of the base, the ratio of the projection distance in the retracted position to the projection distance in the deployed position being strictly less than 1.

[0075] According to an example, for the elastically deformable part, the ratio of the protrusion distance in the retracted position to the protrusion distance in the deployed position is greater than or equal to 0.2, in particular greater than or equal to 0.3, in particular greater than or equal to 0.4 and / or less than or equal to 0.95, in particular less than or equal to 0.8.

[0076] In one example, the base, specifically the fixed part of the base, includes at least one housing opening through the first face of the fixed part and positioned opposite the elastically deformable part. The housing has a shape configured to receive at least part of the elastically deformable part. The elastically deformable part is movable relative to the fixed part of the base, along the mounting direction, between an extended position in which the elastically deformable part protrudes from the first face of the fixed part of the base when the elastically deformable part is not compressed, and a retracted position in which the elastically deformable part is housed at least partially within the housing when the elastically deformable part is compressed.

[0077] According to an example, one or more proximal portions extend from the first face of the fixed part of the base and / or from a lateral part of the fixed part of the base and / or from the second face of the fixed part of the base and / or from at least one face of the fixed part of the base arranged in the housing.

[0078] The housing helps to reduce the bulk of the moving blade when compressed, reducing the space between the first face of the fixed part of the base and the structure.

[0079] As an example, the base comprises several elastically deformable parts or movable blades, for example, two, three, four, five, six, seven, eight, nine, or ten, or a different number, distributed around the fixing element, in particular several elastically deformable parts evenly distributed around the fixing element. Preferably, the number of elastically deformable parts is between 1 and 4 inclusive, in particular between 2 and 4 inclusive.

[0080] According to one example, the at least two elastically deforming parts or moving blades are disjoint.

[0081] According to one example, the elastically deformable part or the movable blade is separate and / or distant from the fixing element.

[0082] According to one example, the fastening device includes at least two elastically deformable parts 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 part.

[0083] According to one example, the at least two elastically deformable parts of the fastening device are identical.

[0084] According to an 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 thickness and / or surface and / or inclination with respect to the first face of the fixed part of the base and / or the inclination with respect to the second face of the fixed part of the base and / or the inclination with respect to the direction of assembly and / or the dimension and / or the compressive strength and / or the material and / or the arrangement and / or the orientation.

[0085] In one example, the gripping area has a surface area greater than or equal to 100mm 2 , in particular greater than or equal to 200mm 2 and / or less than or equal to 5000mm 2 , in particular less than or equal to 3000mm 2 .

[0086] In the description, the designation "elastically deformable part" can be substituted by the designation "spring element", and vice versa.

[0087] The projection of the spring element(s) onto the surface of the fixed part of the base (also called the occupancy area) 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%.

[0088] According to one example, the elastically deformable part is formed by the base, with at least one of the faces of the base being curved, for example the first face and / or the second face of the base.

[0089] The elastically deformable part is curved before and after the mounting of the fastening device on the structure.

[0090] This solution simplifies the manufacturing of the fastening device and reduces costs.

[0091] In one example, the first face of the base is concave.

[0092] As an example, when the elastically deformable part is compressed, the elastically deformable part generates a restoring force opposite to the mounting direction that is less than the retention force allowing the fastener to be held in the fixing hole.

[0093] For example, the return force is less than or equal to 90% of the retention force. For example, the return force is less than or equal to 78 N, in some cases less than or equal to 70 N. The return force of the elastically deformable part is less than or equal to the force required to engage the device in the orifice and / or is less than or equal to the force required to disengage the device from the orifice. The return force of the elastically deformable part is non-zero, specifically greater than or equal to IN.

[0094] The invention also relates to an assembly which includes a fastening device as described above and a structure including a fastening orifice.

[0095] According to one example, the fixing hole includes a circular, ovoid, oblong, square or rectangular shape.

[0096] 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 0.2 mm, in particular greater than or equal to 0.5 mm and / or less than or equal to 7 mm, in particular less than or equal to 5 mm.

[0097] The invention also relates to a method of using a fastening device as described above, the method comprising the following steps: providing a fastening device as described above and a structure comprising 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 deforming part according to a force parallel to the direction of assembly.

[0098] According to one example, the method of fixing the fixing device to the substrate is exerted by an engagement force parallel to the mounting direction which is less than or equal to 50N, preferably less than or equal to 30N.

[0099] The aforementioned features and advantages, as well as others, will become apparent upon reading the detailed description that follows, along with examples of implementations of the fastening device. This detailed description refers to the attached drawings. Brief description of the drawings

[0100] The attached drawings are schematic and are primarily intended to illustrate the principles of the presentation.

[0101] In these drawings, from one figure to another, identical elements (or parts of elements) are identified by the same reference symbols.

[0102] [Fig. 1] Figure 1 schematically represents a longitudinal section of a fastening device mounted on a structure and fixed to a wall, according to an embodiment of the invention;

[0103] [Fig. 2] Figure 2 schematically represents a fastening device comprising movable fins, according to another embodiment of the invention;

[0104] [Fig. 3] Figure 3 schematically represents the detail of a movable fin from Figure 1;

[0105] [Fig. 4] Figure 4 schematically represents two adjacent movable fins, according to another embodiment of the invention;

[0106] [Fig. 5] Figure 5 schematically represents a movable fin, according to another embodiment of the invention;

[0107] [Fig. 6] Figure 6 schematically represents a movable fin, according to another embodiment of the invention;

[0108] [Fig. 7] Figure 7 schematically represents two movable fins, according to another embodiment of the invention;

[0109] [Fig. 8] Figure 8 schematically represents a movable fin, according to another embodiment of the invention;

[0110] [Fig. 9] Figure 9 schematically represents a movable fin, according to another embodiment of the invention;

[0111] [Fig. 10] Figure 10 schematically represents a movable blade in the shape of a bridge, according to another embodiment of the invention;

[0112] [Fig. 11] Figure 11 schematically represents a movable blade in the shape of a bridge, according to another embodiment of the invention;

[0113] [Fig. 12] Figure 12 schematically represents a fastening device comprising several movable bridge-shaped blades, according to another embodiment of the invention;

[0114] [Fig. 13] Figure 13 schematically represents a fastening device comprising a single movable blade in the shape of a bridge, according to another embodiment of the invention;

[0115] [Fig. 14] Figure 14 schematically represents a fastening device comprising a single movable blade in the shape of a bridge, according to another embodiment of the invention;

[0116] [Fig. 15] Figure 15 schematically represents a fastening device comprising a base forming an elastically deformable part, according to another embodiment of the invention;

[0117] [Fig. 16] Figure 16 schematically represents a fastening device comprising a base forming an elastically deformable part, according to another embodiment of the invention;

[0118] [Fig. 17] Figure 17 schematically represents a base of a fastening device comprising a first face on which the lips of the fastening device are represented by projection along a mounting direction. Description of the implementation methods

[0119] To make the explanation more concrete, an example of a fastening device is described in detail below, with reference to the attached drawings. It should be noted that the invention is not limited to this example.

[0120] Figure 1 shows a fastening device 1 comprising a base 2 having a fixed part 18 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 fixed part 18 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 fixed part 18 of the base 2, opposite the first face 4.

[0121] The fastener 3 is intended to be inserted and held in a fixing 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 and / or the fixed part 18 of the base 2 is also substantially flat.

[0122] 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, welding, or a similar method.

[0123] The fastening element 3 has an oblong cross-section in this example and extends along an axis parallel to the mounting direction Z. The element of The fixing 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.

[0124] 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.

[0125] According to an example, in the rest position, each lip 25 extends in a main direction outwards from the fixing element 3.

[0126] According to an example, in the resting position, the projection of the fixing element 3 onto the first face 4 of the base 2 is greater than or equal to 5%, in particular greater than or equal to 10%, in particular greater than or equal to 20% and / or less than or equal to 90%, in particular less than or equal to 80%, in particular less than or equal to 70%.

[0127] 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 I delimiting the fastening hole 6 and retract towards the central hole 26. The lips 25 then unfold after passing through the fastening hole 6 and form a stop against an inner face 28 of the structure 7, thus locking the fastening device 1 into the fastening hole 6.

[0128] The gripping area 8 comprises first retaining elements 9a projecting from the second face 5 of the fixed part 18 of the base 2 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 protrude here from a base 29 of the retaining device 10.

[0129] The first retaining elements 9a are, in this example, hooks cooperating with the second retaining elements 9b formed, in this example, by loops.

[0130] Alternatively, the first retaining elements 9a can be loops cooperating with the second retaining elements 9b formed by hooks, or the first retaining elements 9a can be hooks cooperating with the second retaining elements 9b formed by hooks, or the first retaining elements 9a can be a combination of hooks and loops cooperating with the second retaining elements 9b formed by a combination of hooks and loops.

[0131] The structure 7, the wall 24 and the fastening device 1 form an assembled unit. The assembled unit may include several fastening devices 1.

[0132] The base 2 includes 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.

[0133] According to the examples shown in Figures 1 to 14, the elastically deformable part 11 extends along the mounting direction Z from the fixed part 18 (or support) of the base 2 and protrudes at least in part from the first face 4 of the fixed part 18 of the base 2 when the elastically deformable part 11 is not compressed.

[0134] Put another way, the elastic deformation part 11 extends from the fixed part 18 of the base 2 and protrudes at least partially beyond a plane perpendicular to the mounting direction Z passing through at least a part of the first face 4 of the fixed part 18 of the base 2 when the elastic deformation part 11 is not compressed.

[0135] In one example, the elastically deformable part 11 is movable along the mounting direction Z between a deployed position in which the elastically deformable part is not compressed, and a retracted position in which the elastically deformable part 11 is compressed. The projection distance of the elastically deformable part 11 being defined as the maximum projection height along the mounting direction Z from the fixed part 18 of the base 2, and the elastically deformable part 11 protruding from the first face 4 of the fixed part 18 of the base 2, the ratio of the projection distance in the retracted position to the projection distance in the deployed position is strictly less than 1.

[0136] According to an example, for the elastically deformable part, the ratio of the protrusion distance in the retracted position to the protrusion distance in the deployed position is greater than or equal to 0.2, in particular greater than or equal to 0.3, in particular greater than or equal to 0.4 and / or less than or equal to 0.95, in particular less than or equal to 0.8.

[0137] According to the examples shown in Figures 1, 3, 4, 5, 6, 7, 8, and 9, the elastically deformable part 11 protrudes from the first face 4 of the fixed part 18 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 fixed part 18 of the base 2.

[0138] According to the examples shown in Figures 2, 10, 11, 12, 13 and 14, the elastically deformable part 11 protrudes from the fixed part 18 of the base 2 from an internal face 52 of the fixed part 18 of the base 2 which is different from the first face 4 of the fixed part 18 of the base 2, and along the mounting direction Z, when the elastically deformable part 11 is not compressed.

[0139] 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.

[0140] In the example in Figure 1, the base 2 comprises four elastically deformable parts 11, of which only two elastically deformable parts 11 are represented, at least one of the elastically deformable parts 11, in particular each elastically deformable part comprises a single inclined portion forming an angle (or minimum angle) of 15° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming an angle of 75° with the mounting direction Z.

[0141] The four elastic deformation parts 11 are arranged symmetrically with respect to a plane parallel to the first direction X and the mounting direction Z and passing through the center of the base 2 or with respect to a plane parallel to the second direction Y and the mounting direction Z and passing through the center of the base 2.

[0142] According to the examples shown in figures 1 to 14, the elastically deformable part 11 comprises a movable blade 12, 23 having at least a first end 13 connected to the base 2, in some cases, having at least a first end 13 connected to the first face 4 of the fixed part 18 of the base 2.

[0143] In the examples in Figures 1 to 9, the movable blade 12 is a movable wing 12 having a proximal end 13 connected to the first face 4 of the fixed part 18 of the base 2 and a distal end 14. The movable wing 12 has a general quadrilateral shape in Figures 1 to 4.

[0144] In the examples in Figures 1 to 9, the movable fin 12 extends in a general direction which is inclined with respect to the first face 4 of the fixed part 18 of the base 2. The movable fin 12 forms an angle α (alpha) (or minimum 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°, more particularly less than or equal to 45°, when the movable fin 12 is not compressed, and as illustrated in Figure 3 and Figure 4.

[0145] For example, the movable fin 12 according to figure 3 comprises a single inclined portion forming an angle a (alpha) (or minimum angle) of 35° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming an angle of 55° with the mounting direction Z.

[0146] The movable fin 12 is free to rotate about an axis of rotation R connecting the proximal end 13 of the movable fin 12 to the fixed part 18 of the base 2. The movable fin 12 is free to move relative to the fixed part 18 of 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.

[0147] In the example of Figure 1, each movable fin 12 forms an opening with the first face 4 of the fixed part 18 of the base 2. The opening is oriented outwards from the fixed part 18 of the base 2.

[0148] During the mounting of the fastening device 1 onto 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 (only two of which are shown in Figure 1) deform elastically and move primarily in a direction parallel to the mounting direction Z and in a direction opposite to the mounting direction M.

[0149] Each of the four movable fins 12 comprises an inner face 32. After assembly, the inner face 32 is closer to the fixed part 18 of the base 2 than before assembly. The inner face 32 can bear against the fixed part 18 of the base 2.

[0150] In the example of Figure 2, the base 2 comprises four elastic deformation parts 11 distributed at the four corners of the fixed part 18 of the base 2 and around the fixing element 3 which is at the center of the fixed part 18 of the base 2. The elastic deformation parts 11 are adjacent to two transverse walls 43, 44 of the fixed part 18 of the base 2 and are contiguous to two longitudinal walls 45, 46 of the fixed part 18 of the base 2. The elastic deformation parts 11 are each positioned at the boundary of one of the longitudinal walls 45, 46.

[0151] Figure 2 illustrates a fastening device 1 similar to that of Figure 1, except that each of the four movable fins 12 forms an opening with the first face 4 of the fixed part 18 of the base 2 which is oriented towards the interior of the fixed part 18 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.

[0152] At least one of the elastically deformable parts 11, in particular each elastically deformable part, comprises a single inclined portion forming an angle (or minimum angle) of 10° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming a minimum angle of 80° with the mounting direction Z.

[0153] Another difference from the example in Figure 1 is that the fixed part 18 of the base 2 comprises four recesses 15, each arranged on the side of the first face 4 of the fixed part 18 of the base 2, and each positioned opposite a movable fin 12. Each recess 15 has a shape configured to receive at least part of the movable fin 12. In this example, each recess 15 has a shape complementary to the shape of the movable fin 12. In this example, the recesses 15 and the movable fins 12 have a parallelepiped shape. Alternatively, the shape of the recess could be different.

[0154] 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 / or a length respectively greater than that of the movable fin 12.

[0155] 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 fixed part 18 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 fixing device 1 on the structure 7.

[0156] Another difference from the example in Figure 1 is that each movable fin 12 shown in Figure 2 extends from an internal face 52 of the fixed part 18 of the base 2, which partially delimits the housing 15, and not from the first face 4 of the fixed part 18 of the base 2. The housing 15 opens through the first face 4 of the fixed part 18 of the base 2.

[0157] This variant has the advantage of reducing the amount of material used for the same function as well as reducing the size of the fastening device 1.

[0158] Alternatively, one or more fins could extend from the first face 4 of the base 2 or from a face of the base arranged in the housing 15.

[0159] The fastening device 1 comprises a fastening element 3 and a hook area 8 as described previously.

[0160] More specifically, each movable fin 12 comprises a proximal end 13 connected to the fixed part 18 of the base 2 and adjacent to one of the two transverse walls 43, 44 of the fixed part 18 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 that runs 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 (X, Z) plane.

[0161] The movable fin 12 includes two corners 50 which can be angular, and form an angle (or minimum angle) of 90°, for example, as illustrated in figures 2 and 3.

[0162] Alternatively, the 50 corners can form an angle (or minimum angle) greater than 90° or be rounded.

[0163] The distance between the ends 13, 14 of the movable fin 12 along the first X direction is greater than or equal to 2 mm and / or less than or equal to 20 mm, for example. The width of the movable fin 12 along the second Y direction is greater than or equal to 2 mm and / or less than or equal to 70 mm, in particular less than or equal to 55 mm, more precisely less than or equal to 35 mm, for example less than or equal to 25 mm, or even less than or equal to 20 mm.

[0164] According to a variant shown in Figure 4, a notch 16 is formed in a connection zone 17 linking the proximal end 13 of the movable fin 12 to the fixed part 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.

[0165] The movable fin 12 includes an inclined portion forming an angle (or minimum angle) of 13° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming an angle of 77° with the mounting direction Z.

[0166] According to one variant, the movable fins 12 with a notch 16 may not be contiguous and arranged at the four corners of the fixed part 18 of the base 2, as in the example of figures 1 and 2.

[0167] According to a variant shown in Figure 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 fixed portion 18 of 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 fixed portion 18 of 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 (or minimum angle) greater than or equal to 45° and / or less than or equal to 135° with each other. The proximal portion 33 and the distal portion 34 form a concave surface facing the fixed portion 18 of the base.

[0168] For example, the proximal portion 33 forms an angle (or minimum angle) of 35° with the first face 4 and / or the second face 5 of the fixed part 18 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 fixed part 18 of the base 2 and / or in a direction perpendicular to the direction of Tl Z assembly. For example, the proximal portion 33 and the distal portion 34 form an angle (or minimum angle) of 125° between them.

[0169] According to a variant shown in Figure 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 fixed part 18 of 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 fixed part 18 of the base 2, and a distal portion 34 which is inclined and connected to the proximal portion 33 by a vertex 35.

[0170] For example, the inclined proximal portion 33 forms an angle (or minimum angle) of 30° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forms an angle of 60° with the mounting direction Z. The inclined distal portion 34 forms an angle (or minimum angle) of 30° with the first face 4 and / or the second face 5 of the fixed part 18 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 (or minimum angle) greater than or equal to 20° and / or less than or equal to 90°, in particular an angle (or minimum angle) of 60°.

[0171] According to a variant shown in Figure 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 the opposite direction to the fixed portion 18 of the base 2, which is concave. The movable fin 12 comprises a first proximal portion 33 and a second proximal portion 33' connected to a proximal end 13 or a vertex 35. Each proximal portion 33, 33' comprises a distal end 14, 14'. The first proximal portion 33 and the second proximal portion 33' form an angle (or minimum angle) greater than 90° and less than 180°, for example, 110°. The movable fin 12 is connected to the fixed part 18 of the base 2 by the apex 35 which is at the center of the movable fin 12. The movable fin 12 includes two free ends 14, 14'.

[0172] The first proximal portion 33 and the second proximal portion 33' each form an angle (or minimum angle) of 35° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or form a minimum angle of 55° with the mounting direction Z.

[0173] According to a variant shown in Figure 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 fixed portion 18 of 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 inclined with respect to the first and / or second face of the fixed portion 18 of the base and / or inclined with respect to the mounting direction and form an angle (or minimum angle) greater than or equal to 20° and / or less than or equal to 150°, in particular 90°. The movable fin 12 is connected to the fixed part 18 of the base 2 by a proximal portion 33 connected to the apex 35.The proximal portion 33 is perpendicular to the first and / or second face of the fixed part 18 of the base and / or parallel to the mounting direction Z. The movable fin 12 comprises two distal ends 14, 14' and a proximal end 13.

[0174] Each distal portion 34, 34' forms an angle (or minimum 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.

[0175] According to a variant shown in Figure 9, the movable fin 12 has a horseshoe shape and comprises a first proximal end 13 and a second proximal end 13' connected to a distal end 14 and through an opening 38. The first proximal end 13 and a second proximal end 13' are distant from each other.

[0176] The movable fin 12 comprises a single inclined portion, generally U-shaped, inverted U-shaped, or horseshoe-shaped. This inclined portion forms an angle (or minimum angle) of 25° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or an angle of 65° with the mounting direction Z. The movable fin 12 thus presents two connections to the fixed part 18 of base 2, the two connections being distant from each other.

[0177] Alternatively, the shape could be different so that it has a common connection to the fixed part 18 of the base 2 and two free ends while retaining a general U or inverted U or horseshoe shape.

[0178] According to a variant shown in Figure 10, the movable blade 12, 23 is a bridge-shaped movable blade 23 which includes a first proximal end 13 and a second proximal end 13', opposite the first proximal end 13. The proximal ends 13, 13' are distant and connected to the fixed part 18 of the base 2, and more specifically connected to an internal face 52 of the fixed part 18 of the base arranged in a housing 15.

[0179] Alternatively, the proximal ends 13, 13' could be connected to the first face 4 of the fixed part 18 of the base 2.

[0180] The movable bridge-shaped blade 23 has an external face 19 positioned opposite the first face 4 of the fixed part 18 of the base 2, the external face 19 being convex. The movable bridge-shaped blade 23 also has an internal face 21 positioned opposite the first face 4 of the fixed part 18 of the base 2, the internal face 21 being concave. A cavity 22 is formed between the movable bridge-shaped blade 23 and the first face 4 of the fixed part 18 of the base 2.

[0181] The bridge-shaped mobile blade 23 comprises a first proximal portion 33 and a second proximal portion 33' connected to each other by a distal end 14 forming an apex 35. The bridge-shaped mobile blade 23 has an overall V-shaped cross-section. The bridge-shaped mobile blade 23 has an undulation or a curvature.

[0182] 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 (or minimum angle) of 15° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming an angle of 75° with the mounting direction Z. The angle (or minimum 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 11.

[0183] The first face 4 of the fixed part 18 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 and / or orientation.

[0184] 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 is not compressed, and a retracted position in which the movable bridge-shaped blade 23 is compressed, for example by the pressure exerted by the structure 7 on the movable bridge-shaped blade 23 after the mounting of the fixing device 1 on the structure 7. The projection height of the movable bridge-shaped blade 23 along the mounting direction Z in the deployed position is greater than the projection height of the movable bridge-shaped blade 23 in the retracted position.

[0185] According to a variant shown in Figure 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 fixed part 18 of the base 2, and more specifically connected to an inner face 52 of the fixed part 18 of the base 2. The inner face 52 is arranged in a recess 15. Alternatively, the first proximal end 13 and the second proximal end 13' can be connected to the first face 4 of the fixed part 18 of the base 2. The bridge-shaped movable blade 23 has an outer face 19 arranged on the opposite side to the first face 4 of the fixed part 18 of the base 2 and an internal face 21 positioned opposite the first face 4 of the fixed part 18 of the base 2. A cavity 22 is formed between the bridge-shaped movable blade 23 and the first face 4 of the fixed part 18 of the base 2. The bridge-shaped movable blade 23 includes undulations, that is to say it includes two vertices 39, forming two distal ends 14, 14', separated by a valley 40. Each vertex 39 forms a contact zone arranged to be in contact with the structure 7.

[0186] The bridge-shaped mobile blade 23 comprises a first proximal portion 33 and a second proximal portion 33' connected to each other by the two peaks 39 and the valley 40. The bridge-shaped mobile blade 23 has a general shape of M or inverted M or W or inverted W.

[0187] Each proximal portion 33, 33' forms a single, unique inclined portion.

[0188] Each inclined portion forms an angle (or minimum angle) of 21° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forms an angle of 69° with the mounting direction Z, the angle (or minimum 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 11.

[0189] The fixed part 18 of the base 2 includes a housing 15 similar to that in the example in Figure 10.

[0190] According to a variant shown in Figure 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 fixed part 18 of the base 2 in the mounting direction Z (following the mounting direction M). 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 includes an end 42 having a triangular cross-section.

[0191] In this example, the base 2 comprises four movable bridge-shaped blades 23 regularly distributed around the central portion 41, and positioned at the four corners of the fixed part 18 of the base 2. Each movable bridge-shaped blade 23 has a circular arc-shaped cross-section. Each bridge-shaped movable blade 23 comprises a first proximal end 13 and a second proximal end 13', opposite the first proximal end 13. The proximal ends 13, 13' are connected to the fixed part 18 of the base 2, and more specifically connected to an internal face 52 of the fixed part 18 of the base 2 arranged in a recess 15. Alternatively, the proximal ends 13, 13' can be connected to the first face 4 of the fixed part 18 of the base 2. The bridge-shaped movable blade 23 has an external face 19 arranged on the side opposite the first face 4 and an internal face 21 positioned opposite the first face 4 of the fixed part 18 of the base 2.A cavity 22 is formed between the bridge-shaped movable blade 23 and the first face 4 of the fixed part 18 of the base 2.

[0192] Each movable bridge-shaped blade 23 has a general bridge shape comprising two connections to the fixed part 18 of the base, the two connections being spaced apart. Each movable bridge-shaped blade 23 has two inclined portions and a general U or inverted U shape. Each inclined portion forms an angle (or minimum 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 (or minimum 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.

[0193] The first face 4 of the fixed part 18 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 direction X, and over a width at least equal to that of the movable bridge-shaped blade 23 along the second direction Y. The recess 15 therefore extends along a plane parallel to the (X, Y) plane and emerges from the fixed part 18 of the base 2 through a transverse wall 43, 44 of the fixed part 18 of the base 2 and through a longitudinal wall 45, 46 of the fixed part 18 of the base 2, perpendicular to the transverse wall 43, 44. The first end 13 of the movable bridge-shaped blade 23 is contiguous to the transverse wall 43, 44. The movable bridge-shaped blade 23 includes a side 20 which is contiguous to the longitudinal wall 45, 46.

[0194] The fastening device 1 includes a hooking area 8 extending over at least a part of a second face 5 of the fixed part 18 of the base 2, opposite the first face 4. The hooking area 8 includes first retaining elements 9a projecting from a part of the second face 5 of the fixed part 18 of the base 2 in a direction parallel (or substantially 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.

[0195] According to an example, in the rest position, the projection of the fixing element 3 onto the first face 4 of the base 2 and the projection of the elastically deformable part(s) 11 onto the first face 4 of the base 2 are free from overlap.

[0196] According to an example, in the rest position, the fixing element 3 comprises at least a first lip 25 extending along a first principal direction DI which is contained in a plane formed by the first direction X and the mounting direction Z. The projection of the first lip 25a onto the first face 4 of the base 2 falls within a first zone ZI on the first face 4 of the base 2 which extends perpendicularly to the mounting direction Z, from the first longitudinal wall 45 of the base 2 to the opposite second longitudinal wall 46 of the base 2. For example, according to a view parallel to the mounting direction Z, the first zone ZI is delimited laterally by a first line PI and a second line P2 perpendicular to the first principal direction D1.The first line PI is tangent to the end of the projection of the first lip 25a or to a first side Cl of the fixing element 3, and the second line P2 is tangent to a second side C2 of the fixing element 3, opposite to the first. side Cl, or to a projection of a second lip 25b opposite(s) to the projection of the first lip 25a, as illustrated in figure 17. The first zone ZI is devoid of an elastic deformation part 11, such as a movable blade and / or a movable bridge.

[0197] In this example, the projection of the first principal direction DI is parallel to the first direction X and the projection of the second principal direction D2 is parallel to the second direction Y. In particular, the first principal direction DI is parallel to the first direction X and the second principal direction D2 is parallel to the second direction Y.

[0198] According to one example, in the rest position, the fixing element 3 includes at least a third lip 25 extending along the second principal direction D2, distinct from the first principal direction D1. The second principal direction D2 lies in a plane formed by the second direction X and the mounting direction Z. The projection of the third lip 25c onto the second face 4 of the base 2 is contained within a second zone Z2 on the second face 4 of the base 2, which extends perpendicularly to the mounting direction Z from the first transverse wall 43 of the base 2 to the opposite second transverse wall 44 of the base 2. For example, according to a view parallel to the mounting direction Z, the second zone Z2 is laterally delimited by two other parallel lines P3, P4 to the first principal direction D1.The third parallel line P3 is tangent to the end of the projection of the third lip 25c or to a third side C3 of the fixing element 3, and the fourth line P4 is tangent to a fourth side C4 of the fixing element 3, opposite the third side C3, or to a projection of a fourth lip 25d opposite the projection of the third lip 25c, as illustrated in Figure 17. The second zone Z2 is devoid of an elastically deformable part 11, such as a movable blade and / or a movable bridge.

[0199] In other words, the face of the fastening element 3 comprising the first or second lip 25 is not positioned opposite an elastically deformable part 11, such as a movable blade and / or a movable bridge. In the rest position, the projection of the fastening element 3 onto the first face 4 of the base 2 extends from one of the walls 43, 44, 45, 46 of the base 2 to another wall 43, 44, 45, 46 opposite of base 2 along the first or second principal direction DI, D2 in a zone Zl, Z2 which is devoid of a moving blade and / or a moving bridge.

[0200] In one example, the projections of the first and second principal directions DI, D2 onto the base 2 are perpendicular to each other and perpendicular to the mounting direction Z. In particular, in one example, the first and second principal directions DI, D2 onto the base 2 are perpendicular to each other and perpendicular to the mounting direction Z.

[0201] As an example, the first and second principal directions DI, D2 are not perpendicular to each other. In particular, the first and second principal directions DI, D2 are perpendicular to the mounting direction Z

[0202] According to one example, the fastening element 3 comprises at least two lips 25, for example at least four lips 25 or a different number of pairs of lips 25, arranged to form the two zones Z1, Z2 as described previously. One or both of the zones Z1, Z2 are devoid of an elastically deformable part 11, such as a movable blade and / or a movable bridge.

[0203] As an example, the lips can have diverse and varied shapes, for example as shown in figures 1, 2, and 12 to 16. For example, the lips 25 in figures 1, 13 and 14 form pillars 25.

[0204] Thus, by providing elastically deformable parts 11 (in particular bridge or fin) arranged outside the first zone Z1 and / or the second zone Z2, it is easier to manufacture fastening devices 1 according to the invention, even easier for fastening devices 1 obtained by injection molding, and even much easier for fastening devices 1 whose base 2 and fastening elements 3 are obtained by injection molding.

[0205] According to an example, in its rest state, the fastening device 1 includes a recess arranged on the side of the first face 4 of the base 2. The recess includes a depth arranged between the first face 4 of the base 2 and a plane perpendicular to the mounting direction Z and tangent to two opposite ends of the base 2. The depth of the recess is measured along a direction parallel to the mounting direction Z. According to an example, the hollow has a depth which varies, in a direction perpendicular to the mounting direction Z, over a distance greater than or equal to 5% of the width of base 2, in particular greater than or equal to 10% of the width of base 2, in particular over a distance which greater than or equal to 30% of the width of base 2 and / or over a distance less than or equal to 95% of the width of base 2, in particular less than or equal to 90% of the width of base 2.

[0206] According to one example, the hollow extends over a width, extending in a direction perpendicular to the mounting direction Z of base 2, less than or equal to 90% of the width of base 2, in particular less than or equal to 80% of the width of base 2 and / or greater than or equal to 10% of the width of base 2, in particular greater than or equal to 20% of the width of base 2.

[0207] According to one example, the hollow is measured in a plane including the mounting direction Z and passing through at least one elastically deformable part 11.

[0208] According to one example, the elastic deformation part(s) 11 are arranged on the edge or periphery of the base 2.

[0209] According to one example, the projection of at least one elastically deformable part 11 in a plane perpendicular to the mounting direction Z, in particular the projection of each elastically deformable part 11, overlaps the projection of the gripping area 8 in a plane perpendicular to the mounting direction Z.

[0210] According to an example, the fixing hole 6 includes a depth measured along the mounting direction Z and the fixing element 3 includes a height measured along the mounting direction Z, the ratio of the height of the fixing element 3 to the depth of the fixing hole 6 is greater than or equal to 1.5, in particular greater than or equal to 4 and / or less than or equal to 50, in particular less than or equal to 25.

[0211] For example, in its rest state, the first face 4 of the base 2 has a radius of curvature that varies, along a direction perpendicular to the mounting direction Z, over a distance greater than or equal to 5% of the width of the base 2, in particular greater than or equal to 10% of the width of the base 2, in particular over a distance greater than or equal to 30% of the width of base 2 and / or over a distance less than or equal to 95% of the width of base 2, in particular less than or equal to 90% of the width of base 2.

[0212] 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 fixed part 18 of the base 2 along the second direction Y, and from a first longitudinal wall 45 of the fixed part 18 of the base 2 to a second longitudinal wall 46 of the fixed part 18 of the base 2. The movable bridge-shaped blade 23 extends over the entire width of the fixed part 18 of the base 2. The movable bridge-shaped blade 23 has a circular arc-shaped cross-section, the cross-section being formed along a plane parallel to the first direction X and the mounting direction Z.

[0213] The first face 4 of the fixed part 18 of the base 2 includes a housing 15 positioned opposite the movable bridge-shaped blade 23 and which extends, for example here, over at least the entire width of the fixed part 18 of the base 2.

[0214] The movable bridge-shaped blade 23 has an external face 19 oriented towards a direction opposite to the housing 15 and an internal face 21 positioned opposite the housing 15 and / or the fixed part 18 of the base 2. A cavity 22 is formed between the movable bridge-shaped blade 23 and the housing 15.

[0215] The bridge-shaped movable blade 23 includes a first proximal end 13 which runs along the first transverse wall 43 of the fixed part 18 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.

[0216] The movable bridge-shaped blade 23 comprises two inclined portions forming a general bridge shape (here, a general U-shape or inverted U-shape) with two connections to the fixed portion 18 of the base 2, the two connections being spaced apart. The movable bridge-shaped blade 23 has a general U-shape or inverted U-shape. Each inclined portion has a general U-shape or inverted U-shape, and / or forms an angle (or minimum angle) of 30° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forming an angle of 60° with the mounting direction Z.

[0217] Alternatively, each inclined portion could have a general U or inverted U shape, and / or form an angle (or minimum angle) of 14° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or form an angle of 76° with the mounting direction Z. The angle (or minimum 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 11.

[0218] The fixing device 1 includes a fixing element 3 which is adjacent to a second transverse wall 44 of the fixed part 18 of the base 2. The fixing element 3 is similar to that of Figure 1.

[0219] The fixing element 3 has an oblong cross-section in this example, and extends along the mounting direction Z. The fixing 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.

[0220] The fastening device 1 includes a gripping area (not shown) extending at least partially over a second face 5 of the fixed part 18 of the base 2, opposite the first face 4. The gripping area includes first retaining elements projecting from at least part of the second face 5 in a direction parallel (or substantially parallel) and opposite to the mounting direction Z. The first retaining elements are intended to hook onto second retaining elements of a retaining device 10 fixed to a wall.

[0221] 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 fixed part 18 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 fixed part 18 of the base 2 to a second proximal end 13' of the movable bridge-shaped blade 23 which is adjacent to a second longitudinal wall 46 of the fixed part 18 of the base 2. The movable bridge-shaped blade 23 includes a flank 20 which runs along the first transverse wall 43 of the fixed part 18 of the base 2. The movable bridge-shaped blade 23 extends along the second direction Y, forming an arc of a circle.

[0222] The movable bridge-shaped blade 23 extends almost across the entire width of the fixed part 18 of the base 2.

[0223] The first face 4 of the fixed part 18 of the base 2 includes a housing 15 positioned opposite the bridge-shaped movable blade 23 and which extends almost over the entire width of the fixed part 18 of the base 2.

[0224] The movable bridge-shaped blade 23 comprises two inclined portions forming a general bridge shape with two connections to the fixed part 18 of the base 2, the two connections being spaced apart. The movable bridge-shaped blade 23 has a general U or inverted U shape. Each inclined portion has a general U or inverted U shape, and / or forms an angle (or minimum angle) of 14° with the first face 4 and / or the second face 5 of the fixed part 18 of the base 2 and / or forms an angle of 76° with the mounting direction Z.

[0225] The movable bridge-shaped blade 23 has an external face 19 arranged towards a direction opposite to the housing 15 and an internal face 21 positioned opposite the housing 15 and / or the fixed part 18 of the base 2. A cavity 22 is formed between the movable bridge-shaped blade 23 and the housing 15 and / or the fixed part 18 of the base 2.

[0226] The fixing device 1 includes a fixing element 3 which is adjacent to a second transverse wall 44 of the fixed part 18 of the base 2. The fixing element 3 is similar to that of Figure 1.

[0227] The fixing element 3 has an oblong cross-section in this example, and extends along the mounting direction Z. The fixing 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.

[0228] The fastening device 1 includes a gripping area (not shown) extending over at least part of a second face of the fixed part 18 of the base 2, opposite the first face 4. The gripping area includes first retaining elements projecting from at least part of 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 retaining device 10 fixed to a wall 24.

[0229] According to another example (not shown), the bridge shape can have a different number of connections with the fixed part of the base, for example a single connection or three, four or more connections with the fixed part of the base, for example four connections with the fixed part of the base by providing openings between the connections of the bridge to the fixed part of the base.

[0230] Alternatively, the fastening devices 1 shown in figures 10 to 14 may not include housings 15.

[0231] 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 15 could be different from those shown in the figures.

[0232] 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.

[0233] According to one variant (not shown), the base 2 may include a combination of at least one movable fin 12 and at least one movable bridge-shaped blade 23.

[0234] The movable blade 12, 23 has a thickness greater than or equal to 0.2 mm and / or less than or equal to 1 mm, for example.

[0235] The thickness of the fixed part 18 of the base 2 and the thickness of the movable blade 12, 23 are adjusted to prevent the fastening element 3 from disengaging from the opening 6 of the structure 7, especially when the thickness of the structure 7 is at the maximum tolerance. If the fixing element 3 is not completely fixed in the opening 6 of the structure 7 because of the lips 25 which cannot fully deploy, the fixing element 3 may then disengage from the structure 7.

[0236] The movable bridge-shaped blade 23 has a width greater than or equal to 2 mm and / or less than or equal to 70 mm, in particular less than or equal to 55 mm, more precisely less than or equal to 35 mm, for example less than or equal to 25 mm or less than or equal to 20 mm, for example. The width of the movable bridge-shaped blade 23 along the first direction X is approximately 25 mm when the movable bridge-shaped blade 23 extends from one end to the other of the fixed part 18 of the base 2.

[0237] The movable blade 12, 23 has a maximum mobility capacity between a rest position and a compressed position greater than or equal to 0.1 mm, 0.2 mm, 0.4 mm and / or less than or equal to 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 fixed part 18 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 fixed part 18 of the base 2 and the first face 4 is greater than or equal to 0.1 mm and / or less than or equal to 1.2 mm.

[0238] For a movable fin 12, the part of the movable fin 12 that is furthest from the first face 4 of the fixed part 18 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 fixed part 18 of the base 2 is the central part of the movable bridge-shaped blade 23.

[0239] The movable blade 12, 23 forms an angle a (alpha or minimum 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°, more particularly less than or equal to 45°, when the movable blade 12, 23 is not compressed (at rest).

[0240] 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 inclusive, in particular between 2 and 4 inclusive.

[0241] The projection of the movable blades 12, 23 and / or the elastically deformable part(s) 11 onto the first face 4 of the fixed part 18 of the base 2 is greater than or equal to 0.50%. For example, for a small movable fin 12 with a width of 2 mm and a length of 4 mm, i.e., a surface area of ​​8 mm 2 and a first face 4 presenting the largest area, which is 1250 mm 2 , the overlap by the movable fin 12 is 0.64%.

[0242] The overlap of the movable blades 12, 23 and / or of the elastically deformable part(s) 11 on the first face 4 of the fixed part 18 of the base 2 is 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%. The 76% overlap corresponds to two movable blades 12 each having a surface area of ​​950 mm². 2 and a first face 4 having an area of ​​1250 mm 2 The recovery is notably less than or equal to 50%, and notably less than or equal to 30%.

[0243] Alternatively, the base 2 may include two movable fins 12 facing each other with their second ends 14 which are apart at rest and their second ends 14 which come together to form a bridge when the two movable fins 12 are under stress.

[0244] According to a variant shown in Figure 15, the fastening device 1 includes an elastically deformable part 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.

[0245] Alternatively, base 2 can be curved with a radius of curvature extending globally along the second Y direction and / or the first X direction.

[0246] The elastic deformation 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 elastic deformation part 11 has a minimum radius of curvature, when it is not compressed against a wall, and a compressed position in which the elastic deformation part 11 is not curved or has a radius of curvature greater than the minimum radius of curvature, when the elastic deformation part 11 is compressed against a wall.

[0247] The fastening device 1 includes, for example, a fastening element 3 which is positioned in the center of the base 2.

[0248] The fastening element 3 is similar to that shown in Figure 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 along the mounting direction Z (following the mounting direction M). The central portion 41 comprises four rows of lips 25 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 includes an end 42 having a triangular cross-section.

[0249] 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.

[0250] According to a variant shown in Figure 16, the fastening device 1 includes an elastically deformable part 11 which is formed by the base 2.

[0251] Only the first face 4 of base 2 is curved. The first face 4 of base 2 is concave. The second face 5 of base 2 is not curved. The second face 5 of base 2 is flat.

[0252] The first face 4 of the base 2 is curved with a radius of curvature extending generally along the first X direction, allowing it to be flexible when compressed. The thickness of the base 2 varies along the first X direction.

[0253] Alternatively, the first face 4 of the base 2 can be curved with a radius of curvature extending globally along the second direction Y and / or the first direction X.

[0254] 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.

[0255] The first face 4 of the base 2 includes two end edges 51 which protrude on the first face 4 along the mounting direction Z.

[0256] The fastening device 1 includes a fastening element 3 which is positioned at the center of the base 2.

[0257] 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 along the mounting direction Z. The central portion 41 includes four rows of lips 25 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. Alternatively, one or two of the rows of lips 25 could be parallel to the base and / or perpendicular to the mounting direction Z. The central portion 41 includes an end 42 having a triangular cross-section.

[0258] 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 (or substantially parallel) and opposite to the mounting direction Z.

[0259] Alternatively, the base 2 may, for example, have a general parallelepiped shape and / or comprise a central part 48 and four opposing end parts 49, which are thicker than the central part 48 following the Z mounting direction, each end part 49 forming a corner of the base 2.

[0260] Regardless of the embodiment presented above, when the elastically deformable part 11 is compressed, it generates a restoring force opposite 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.

[0261] For example, the base 2 and / or the fixed part 18 of 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 can be hooks with a height greater than 0.4 mm and less than 1.4 mm.

[0262] When the base 2 and / or the fixed part 18 of the base 2 is a parallelepiped, it has a length greater than or equal to 18 mm and / or less than or equal to 70 mm, in particular less than or equal to 50 mm, and a width greater than or equal to 18 mm and / or less than or equal to 70 mm, in particular less than or equal to 25 mm. The length is greater than or equal to the width. The area of ​​the base 2 is greater than or equal to 324 mm². 2 and / or less than or equal to 5,000 mm 2 , in particular less than or equal to 1250 mm 2 .

[0263] The base 2 and / or the fixed part 18 of the base 2 may be disc-shaped with a diameter greater than or equal to 25 mm and / or less than or equal to 50 mm. The surface area of ​​the circular base and / or the circular fixed part 18 of the base 2 is greater than 490 mm². 2 and less than 1964 mm 2 .

[0264] The mounting device 1 has a height, along the mounting direction Z, that is greater than or equal to 10 mm and / or less than or equal to 30 mm, in particular less than or equal to 23.9 mm. The structure 7 has a thickness greater than or equal to 1.3 mm and / or less than or equal to 2.2 mm. The mounting device 1 absorbs a gap (or play) between the base 2 and the structure 7, which is preferably approximately 0.9 mm. The gap to be absorbed to reduce vibrations is therefore greater than or equal to 3.8% and / or less than or equal to 9% of the total height of the mounting device 1.

[0265] Regardless of the embodiment presented above, the fastening device 1 may comprise one or more thermoplastic materials, for example chosen from polyolefins, polyamides, TPE, ABS (Acrylonitrile Butadiene Styrene), PP (Polypropylene), PC (Polycarbonate), PVC (Polyvinyl Chloride), PEI (Polyetherimide), PES (Polyether Sulfone), PMMA (Polymethyl Methacrylate), PA (Polyamide) 6,6 and / or PS (Polystyrene) and / or a combination of at least two of these materials, for example ABS / PC, and / or any other materials described in at least one of documents EP2052829 and / or WO2014083245 which are fully included in the description.

[0266] According to one example, the first retaining elements 9a of the fastening device 1 have a perpendicular release force which is greater than or equal to 4 N / cm 2 , in particular greater than or equal to 8 N / cm 2and / or less than or equal to 40 N / cm 2 , in particular less than or equal to 30 N / cm 2 The perpendicular stall force is measured according to the NF G91 103 method.

[0267] According to an example, the first retaining elements 9a of the fastening device 1 having a height, measured perpendicular to the base 2, the elastically deformable part 11 being configured to deform elastically and move at least in a direction parallel to the mounting direction Z and having a maximum mobility capacity, the ratio of the height of the first retaining elements 9a to the maximum mobility capacity is between 0.33 and 14, in particular is between 0.5 and 7, more precisely is between 1 and 4. With such a ratio, the effect of the present invention can be further highlighted, in particular the noise in a vehicle passenger compartment due to vibrations of the fastening device is reduced or even eliminated.

[0268] The fastening device can find specific applications in various fields such as building, automotive, rail, or marine, particularly in the field of vehicles, especially for fastening trim, for example, fastening roof trims to a vehicle structure inside a passenger compartment, particularly in the field of motor vehicles.

[0269] 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 restrictive sense.

Claims

Demands

1. 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 (6), and - a gripping area (8) extending over at least a part of 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), in particular when the fastener (3) is inserted into the fastener hole (6).

2. A fastening device (1) according to claim 1, wherein the base (2) comprises a fixed part (18) on which the first face (4) is positioned, the elastically deformable part (11) extending along the mounting direction (Z) from the fixed part (18) of the base (2) and protruding at least partially from the first face (4) of the fixed part (18) of the base (2) when the elastically deformable part (11) is not compressed.

3. Fixing device (1) according to claim 2, wherein the elastically deformable part (11) comprises a movable blade (12, 23) having a first proximal end (13) connected to the fixed part (18) of the base (2), in particular to the first face (4) of the fixed part (18) of the base (2), and at least one distal end (14, 14') distant from the fixed part (18) of the base (2), in particular distant from the first face (4) of the fixed part (18) of the base (2), the distal end (14, 14') being intended to be in contact with a structure (7).

4. Fixing device (1) according to claim 2 or 3, wherein the elastically deformable part (11) comprises at least one inclined portion extending in a general direction which is inclined with respect to a plane parallel to the first face (4) of the fixed part (18) of the base (2) and / or which is inclined with respect to a plane parallel to the second face (5) of the fixed part (18) 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 2 to 4, wherein a notch (16) is formed in a connecting zone (17) linking the elastically deformable part (11) to the fixed part (18) of the base (2).

6. A fastening device (1) according to any one of claims 2 to 5, wherein the elastically deformable part (11) 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 7 ) being connected to the fixed part (18) of the base (2), in particular to the first face (4) of the fixed part (18) of the base (2), and being connected to each other by at least one distal end (14, 14').

7. A fastening device (1) according to any one of claims 2 to 6, wherein the elastically deformable part (11) is movable along the mounting direction (Z) between an extended position in which the elastically deformable part (11) is not compressed, and a retracted position in which the elastically deformable part (11) is compressed, a projection distance of the elastically deformable part (11) being defined as the maximum projection height along the mounting direction (Z) from the fixed part (18) of the base (2), the elastically deformable part (11) projecting from the first face (4) of the fixed part (18) of the base (2), the ratio of the distance of protrusion in the retracted position over the protrusion distance in the deployed position being strictly less than 1.

8. A fastening device (1) according to any one of claims 2 to 7, wherein the base (2) comprises several elastically deformable parts (11) distributed around the fastening element (3), in particular several elastically deformable parts (11) distributed regularly around the fastening element (3).

9. A fastening 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