Assembly for receiving at least one display device

Abstract

The invention relates to an assembly (20) for receiving at least one display device (4). The assembly (20) comprises: a facade (6) made of a first material having a first coefficient of expansion, in particular made of glass, arranged to be placed in front of the display device (4); -a support (8) made of a second material having a second expansion coefficient, in particular made of metal, which is higher than the first expansion coefficient, the support (8) being arranged to support the facade (6), and the support (8) being formed by at least two consecutive support portions (22) arranged along the main expansion direction (Y) of the assembly; and-at least one adhesive (10) for attaching the facade (6) to the support part (22).

Description

Technical Field

[0001] The invention relates to an assembly for receiving at least one display device, the assembly comprising a facade and a support, and a method for assembling such an assembly. Background Art

[0002] In a known manner, there is an assembly designed to receive a display device comprising one or more screens extending across the entire width of a vehicle dashboard. The display device is located behind a facade of the assembly, for example, made of glass. The facade is supported by a support member of the assembly, for example, made of metal. The attachment between the facade and the support member is ensured by an adhesive.

[0003] When the assembly is subjected to strong temperature changes, the adhesive used to secure the facade to the support is subjected to shearing, which can damage the adhesive, which is undesirable. Summary of the Invention

[0004] The object of the present invention is, inter alia, to remedy this drawback.

[0005] The subject of the invention is therefore an assembly designed to receive at least one display device and comprising:

[0006] - a facade made of a first material having a first coefficient of expansion, in particular made of glass, designed to be placed in front of said display device;

[0007] - a support made of a second material, in particular metal, having a second coefficient of expansion, which is higher than the first coefficient of expansion, said support being designed to support the facade and being formed by at least two supporting parts situated in succession in the main expansion direction of the assembly; and

[0008] - at least one adhesive which secures the facade to the supporting part.

[0009] Thus, each support portion is able to expand in a main expansion direction.Since the size of each support portion is reduced relative to the overall size of the support, the expansion value of the support is reduced.

[0010] In this way, in the main expansion direction of the assembly, the differential expansion values ​​between the facade and the support are reduced, which has the effect of limiting the shearing of the adhesive fixing the facade to the support in this direction.

[0011] For example, when the support is formed from at least two supporting parts in succession, the shearing amount of the adhesive is halved.

[0012] The term "main expansion direction of a component" refers to a specific direction in which the expansion or contraction of different parts of the component is measured. It should be understood that expansion can occur in other directions. In the following, expansion occurring in these other directions is not considered.

[0013] By "at least two supporting portions in succession" is meant that the supporting portions are placed one after the other in the main expansion direction. For example, the supporting portions are aligned in the main expansion direction.

[0014] According to one aspect of the invention, the support parts are positioned with a space between them in the main expansion direction of the assembly.

[0015] Therefore, the space between the support parts makes it possible to prevent damage or friction noise or squeaking caused by any contact between the support parts.

[0016] According to one aspect of the invention, the assembly comprises a bracket, in particular made of metal, designed to be fixed to the facade in a rigid manner, in particular by means of an adhesive, which may be the same adhesive used to fix the facade to the support.

[0017] "Fixed in a rigid manner" means that there are no degrees of freedom between the bracket and the facade. The bracket makes it possible to integrate the supporting parts while leaving them a certain degree of freedom in the main expansion direction of the assembly, allowing the supporting parts to slide along the bracket when expansion occurs.

[0018] According to one aspect of the present invention, the support comprises:

[0019] - fixing elements designed to be fixed to the facade; and

[0020] - a base integral with the fixing element, wherein said base supports the supporting portion.

[0021] The bracket further defines an interface for assembling the assembly in a vehicle. The bracket also includes elements configured for positioning and securing in a vehicle.

[0022] According to one aspect of the present invention, the support portion is interposed between the bracket and the facade.

[0023] According to one aspect of the invention, the stent base is configured to support the support portion with a degree of freedom that allows the support portion to slide relative to the stent in a primary expansion direction.

[0024] According to one aspect of the invention, the bracket base has a generally rectangular perimeter.

[0025] It will be appreciated that any other form of perimeter may be envisaged, such as a perimeter that is polygonal, elliptical, circular etc.

[0026] According to one aspect of the invention, the fixing element and the bracket base form a one-piece component, or form separate components that are assembled.In general, the bracket can be manufactured in a number of possible ways.

[0027] According to one aspect of the present invention, the stent has a plane of symmetry passing through a middle portion of the stent in a main expansion direction.

[0028] According to one aspect of the invention, the fixing element is located on a median symmetry plane of the facade in the main expansion direction.

[0029] The fixing element thus allows referencing the facade relative to the vehicle.

[0030] According to one aspect of the invention, the facade has a substantially rectangular form, the longer sides of the rectangle extending in the main expansion direction.

[0031] This basic rectangular form can be a perfect rectangle, or have rounded corners.

[0032] According to one aspect of the invention, each support portion faces a portion of the facade.

[0033] According to one aspect of the invention, the support parts face different parts of the facade, so that all parts of the support together face the facade.

[0034] According to one aspect of the invention, the assembly includes at least one sliding connection configured to connect the stent and one of the support portions so as to allow translation of the support portion relative to the stent in a primary expansion direction.

[0035] According to one aspect of the invention, the assembly comprises a sliding connection for each support portion.

[0036] The rigidity of the assembly is provided by the bracket. The bracket integrates the support portion while leaving a certain degree of freedom, allowing the support portion to slide along the bracket when expansion occurs, thanks to the sliding connection in the main expansion direction of the assembly.

[0037] According to one aspect of the invention, the assembly comprises at least one pivot-slide connection.

[0038] According to one aspect of the invention, the pivot-slide connection comprises a guide element designed to cooperate with one of the support portions.

[0039] According to one embodiment of the invention, the guide element is movable relative to the fixing element.

[0040] According to another embodiment of the invention, the guide element is stationary relative to the fixed element.

[0041] According to one aspect of the invention, one of the support parts comprises a hollow post extending along a vertical axis of the support part. The hollow post is part of a pivot-slide connection.

[0042] According to one aspect of the invention, at least one of the pivot-slide connections comprises a slideway forming a fixed guide element.

[0043] The slideways allow sliding in the main expansion direction.

[0044] According to one aspect of the invention, the guide element comprises an aperture designed to receive a post extendable in said aperture.

[0045] According to one aspect of the invention, the slide comprises an aperture designed to receive a post extendable in said aperture.

[0046] According to one aspect of the invention, the orifice is oblong in the main expansion direction.

[0047] According to one aspect of the invention, the size of the orifice of the guide element is selected to allow clearance of the pillar in the main expansion direction of the assembly.

[0048] According to one aspect of the invention, the slide is integral with the bracket or support portion.

[0049] According to one aspect of the present invention, the slideway is embedded in the bracket base.

[0050] According to one aspect of the invention, at least one pivoting and sliding connection comprising at least one primary blocking element extends in an axis perpendicular to the supporting portion.

[0051] According to one aspect of the invention, the primary blocking element is located in a hollow column of the support portion.

[0052] According to one aspect of the present invention, the pivoting and sliding connection device further comprises at least two secondary blocking elements embedded in the bracket base and the slideway along an axis perpendicular to the bracket base.

[0053] According to one aspect of the present invention, an axis perpendicular to the bracket base and an axis perpendicular to the support portion coincide with each other.

[0054] According to one aspect of the invention, each blocking element is designed to cooperate with a slideway.

[0055] According to one aspect of the invention, the fixing element is designed to cooperate with the slideway.

[0056] According to one aspect of the invention, the blocking element is formed by at least one of the following assembly means: screws and bolts, rivets.

[0057] According to one aspect of the present invention, the blocking element is composed of screws and bolts, including at least one screw.

[0058] According to one aspect of the invention, the head of the screw is wider than the opening of the slideway.

[0059] According to one aspect of the present invention, the pivoting sliding connection comprises:

[0060] - a primary blocking element located in the hollow pillar; and

[0061] - At least two further secondary blocking elements, which are embedded in the support base and the slideway in the opposite direction to the primary blocking element, so that the slideway is interposed between the primary and secondary blocking elements.

[0062] In this way, the slide is optimally fixed to the support base due to the stresses exerted in two opposite directions by the primary and secondary blocking elements. Assembly can also be performed by clamping the primary and secondary blocking elements in position.

[0063] According to one aspect of the invention, each sliding connection comprises at least two pivoting sliding connections associated in such a way as to preserve the degree of freedom of translation in the main expansion direction.

[0064] Arranged in a suitable manner, these pivot-slide connections make it possible to prevent any rotation.

[0065] According to one aspect of the invention, the pivot-slide connections are spaced apart from each other in the expansion direction of the assembly.

[0066] According to one aspect of the invention, each support portion comprises at least two pivot-sliding connections offset from one another on an axis transverse to the main expansion direction of each support portion.

[0067] These pivot-slide connections make it possible to strengthen the assembly and prevent a hinge effect.

[0068] According to one aspect of the invention, the number of pivot-sliding connection means on each support portion is a multiple of two, ie at least two, preferably four.

[0069] According to one aspect of the invention, the pivot-slide connection is positioned along the main expansion direction of the assembly.

[0070] According to one aspect of the invention, the pivot-slide connection means are positioned on the support portion symmetrically with respect to a median plane of symmetry of the facade.

[0071] According to one aspect of the invention, the slide is made of a plastic or polymer having a low coefficient of friction relative to the coefficient of friction of the second material forming the support portion, in particular a polymer derived from tetrafluoroethylene.

[0072] Thus, a slide made of plastic or polymer makes it possible to reduce friction between materials, such as metal, whose coefficient of friction is higher than that of the material forming the slide, in particular when the slide is inserted between a bracket and a supporting part made of metal.

[0073] According to one aspect of the invention, the slideway is integrated with the fixing element by being screwed into the bracket, adhered or overmolded by plastic injection.

[0074] According to one aspect of the invention, each supporting portion is designed to cooperate with pivoting and sliding connections positioned alternately in the main expansion direction of the assembly.

[0075] According to one aspect of the invention, each supporting portion is designed to cooperate with at least three pivoting and sliding connections.

[0076] According to one aspect of the present invention, the support base comprises:

[0077] - a plurality of notches designed to allow the insertion of a hook belonging to one of the support parts; and

[0078] The hooks of the support portion are designed to integrate the support portion with the stent base when the support portion and the stent base are assembled together, while leaving freedom of translation in the main expansion direction.

[0079] To assemble the support part on the stent base, the hooks are inserted into the recesses and the support part is then slid relative to the stent base so that the hooks engage with the stent base while leaving translational freedom in the main expansion direction.

[0080] According to one aspect of the invention, each sliding connection comprises a pivoting sliding connection and at least two hooks located on two parallel side edges of the support portion, thereby maintaining the translational freedom in the main expansion direction.

[0081] According to one aspect of the invention, the assembly comprises two stops in order to limit the displacement of the support portion relative to the base of the support while allowing a degree of translation equal to or greater than the maximum expansion value.

[0082] According to one aspect of the invention, each support portion comprises at least one stop in order to limit the displacement of the support portion relative to the support base while allowing a degree of translation equal to or greater than the maximum expansion value.

[0083] According to one aspect of the present invention, a stopper is formed on the pivot-slide connection device. The stopper corresponds to an end of the oblong aperture.

[0084] According to one aspect of the present invention, the notch is located on each side edge of the bracket, and the side edges of the bracket are parallel to the maximum length of the bracket.

[0085] According to one aspect of the invention, the assembly comprises a slider between the hook and one of the support portions, such that the stent can slide between the hook and one of the support portions in the main expansion direction with low friction.

[0086] According to one aspect of the invention, the slider comprises a guide rib designed to cooperate with the groove of the bracket, said rib extending in the main expansion direction of the assembly.

[0087] When thermal expansion occurs, the guide ribs allow one of the support parts to slide along the bracket in the main expansion direction.

[0088] According to one aspect of the invention, the slide is integral with one of the support parts.

[0089] The sliding movement of the bracket occurs between the bracket and a slideway integral with one of the support parts.

[0090] According to one aspect of the present invention, the guide rib is located on the axisymmetric plane of the longest length of the slideway.

[0091] According to one aspect of the invention, the two supporting portions are symmetrical to each other with respect to a symmetry plane which intersects the main expansion direction of the assembly at right angles.

[0092] According to one aspect of the invention, the two supporting parts are symmetrical to each other with respect to a middle symmetry plane of the longest length of the facade.

[0093] According to one aspect of the invention, the adhesive for securing the facade to the support portions is located at the periphery of each support portion.

[0094] According to one aspect of the invention, the facade forms a panel.

[0095] According to one aspect of the invention, the support portions have the same size as each other.

[0096] According to one aspect of the present invention, the length of each support portion is the same as one another.

[0097] According to one aspect of the invention, the dimensions of the support are smaller than or equal to the dimensions of the facade.

[0098] According to one aspect of the invention, the supports are not visible from the side of the facade.

[0099] According to one aspect of the invention, a protection unit may be added to the perimeter of the assembly.

[0100] Thus, the additional protection element makes it possible to complete the aesthetic appearance of the assembly, particularly at the borders. Furthermore, the protection element makes it possible to provide better protection for the perimeter of the assembly, particularly at the edges of facades made of glass, for example.

[0101] According to one aspect of the invention, the facade is made in one piece.

[0102] According to one aspect of the invention, the main expansion direction is the direction of the longest length of the assembly.

[0103] According to one aspect of the invention, the facade is transparent so that the image of the display device can be seen through the facade.

[0104] According to one aspect of the present invention, the first material is made of glass, in particular, tempered glass.

[0105] Glass has good dimensional properties, particularly in terms of surface levelness and tension, which contributes to the optical function of the objects it covers. Glass can be easily treated with coatings to improve its optical properties, particularly reflectivity. Glass is also rigid and has good scratch resistance.

[0106] According to one aspect of the present invention, the second material is a metal selected from magnesium alloy or aluminum alloy.

[0107] Magnesium alloys have the best mechanical properties related to their density, and aluminum alloys have a satisfactory elastic modulus.

[0108] According to one aspect of the invention, the support portion is manufactured by moulding under pressure.

[0109] This manufacturing method offers great geometric possibilities for obtaining good strength relative to the volume of material used, in particular for producing ribs, as well as good levelness.

[0110] According to one aspect of the present invention, the adhesive is a glue sealant, a double-sided tape, a two-component glue, a silicone, or an adhesive.

[0111] According to one aspect of the invention, the facade is fixed to the support portion and to the fixing element of the bracket.

[0112] The invention also provides a module, in particular a vehicle dashboard, comprising an assembly according to the invention and a display device positioned facing a facade of the assembly.

[0113] According to one aspect of the present invention, a display device includes a plurality of screens.

[0114] According to one aspect of the present invention, a display device includes a single screen.

[0115] According to one aspect of the invention, each screen comprises a panel of pixels.

[0116] According to one aspect of the present invention, the screen size is 10.25 inches or 12.3 inches, and the image format is 8:3.

[0117] According to one aspect of the invention, the screen is arranged to extend across the entire width of the vehicle dashboard.

[0118] According to one aspect of the invention, the width of the vehicle dashboard measures at least 0.8 m, preferably at least 1.2 m, more particularly between 1.2 m and 1.4 m.

[0119] The subject of the invention is also a method for producing an assembly designed to receive at least one display device as claimed in any one of the preceding claims, said method comprising the steps of:

[0120] - providing a facade made of a first material having a first coefficient of thermal expansion, in particular made of glass, which is designed to be placed in front of the display device;

[0121] - providing a support made of a second material, in particular metal, having a second coefficient of thermal expansion, which is higher than the first coefficient of thermal expansion, and which is designed to support the facade and is formed by at least two successive parts of the support positioned in the main expansion direction of the assembly; and

[0122] - Fasten the facade to the supporting part with at least one adhesive.

[0123] According to one aspect of the present invention, the method further comprises the following steps:

[0124] - Provide a bracket, which includes:

[0125] o fixing elements designed to be fixed to the facade; and

[0126] o a base integral with the fixing element, said base supporting the support portion;

[0127] - Fastening of the facade to the supporting parts and fixing elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0128] Other characteristics, details and advantages of the invention will become more apparent on reading the detailed description provided below, with reference to the accompanying schematic drawings, and on the basis of a number of embodiments provided by way of non-limiting indication, in which:

[0129] Figure 1 is a schematic diagram of a component according to the prior art that is subjected to strong temperature changes;

[0130] Figure 2 is a simplified schematic diagram of an assembly according to the invention which is subjected to strong temperature changes;

[0131] Figure 3 is a schematic cross-sectional view of an assembly according to a first embodiment;

[0132] Figure 4 yes Figure 3 A schematic cross-sectional view of a pivoting sliding connection device of an assembly;

[0133] Figure 5 is based on Figure 3 a top view of an assembly of a first embodiment;

[0134] Figure 6 is a top view of an assembly according to a second embodiment;

[0135] Figure 7 is a top view of an assembly according to a third embodiment;

[0136] Figure 8 is a cross-sectional view of an assembly according to one embodiment. DETAILED DESCRIPTION

[0137] In the figures, the trihedron XYZ and the reference numerals XY and YZ will represent the orientation of the connection system according to different embodiments. The longitudinal direction Y corresponds to the main expansion direction of the assembly, i.e., the direction of the longest length of the assembly. The vertical direction X and the transverse direction Z correspond to axes perpendicular to the longitudinal direction Y.

[0138] Figure 1 An assembly 2 according to the prior art is shown, which is designed to receive a display device 4. Said assembly 2 comprises:

[0139] - a facade 6 formed of a panel and made of glass, designed to be placed in front of said display device 4;

[0140] - a support 8 made of a magnesium alloy; and

[0141] - a glue seal 10 which fixes the facade 6 to the support 8 .

[0142] The facade 6 is a single piece and is transparent so that the image of the display device 4 can be seen through the facade 6 .

[0143] The facade 6 has a rectangular shape, the longer sides of the rectangle extending in the main expansion direction.

[0144] The term "primary expansion direction of a component" refers to a specific direction in which the expansion or contraction of different portions of component 2 is measured. For example, the primary expansion direction is the direction of the longest length of component 2, i.e., the Y direction of the XYZ trihedron. It should be understood that expansion can occur in other directions. In the following, expansion occurring in directions other than the Y direction is not considered.

[0145] The display device 4 that the assembly 2 is designed to receive includes a plurality of screens (not shown), each screen including a pixel panel (not shown). The screen size is 12.3 inches and the image format is 8:3.

[0146] The screen is designed to extend along the entire width of the dashboard of a vehicle (not shown). The width of the vehicle dashboard is approximately 1.2m.

[0147] Consider a situation where the component 2 is subjected to temperature variations in the range of -40°C to +90°C.

[0148] It is assumed that the displacement in the Y direction is zero (Y=0) at the mid-plane 12 of the component 2. The elevation D1 caused by the expansion starting from the mid-plane of the component 12 F and support D1 S The elongation is evaluated using the following formulas [Mathematical Formula 1] and [Mathematical Formula 2].

[0149] [Mathematical formula 1]

[0150] D1 F =L / 2×b×ΔT

[0151] [Mathematical formula 2]

[0152] D1 S =L / 2×a×ΔT

[0153] Of which: D1 F is the elongation or contraction of the facade starting from the mid-plane of the component 12, in millimeters;

[0154] D1 S is the amount of extension or contraction of the bracket 8 starting from the mid-plane of the assembly 12, in millimeters;

[0155] L is the length of component 2 at ambient temperature, in millimeters;

[0156] a = 27.10 -6 °C -1 is the expansion coefficient of the magnesium alloy;

[0157] b = 9.10 -6 °C -1 is the expansion coefficient of the glass;

[0158] ΔT is the temperature difference in °C.

[0159] The mid-plane of the facade 12 and the mid-plane of the component 12 merge.

[0160] Since the coefficient of expansion of magnesium is three times greater than that of glass b, an approximation can be made according to which the elongation of component D1 corresponds to D1 S and D1 F and the elongation D1 is substantially equal to the elongation D1 of the support member. S , which gives the equation [Mathematical Formula 3]:

[0161] [Mathematical formula 3]

[0162] D1=D1 S =L / 2×a×ΔT

[0163] The differential elongation Δ1 corresponds to the elongation D1 of the support S and the elongation of the facade D1 F The absolute value difference between them.

[0164] [Mathematical formula 4]

[0165] Δ1=|D1 S -D1 F |=(L / 2)×|(ab)×ΔT|

[0166] In this example, the length L of the assembly measures 1200 mm.

[0167] The temperature difference ΔT is 65°C.

[0168] According to the equation [Mathematical Formula 3], the component expands or contracts on each side as follows:

[0169] D1 = D1 S = (1200 / 2)×27.10 -6 ×65 = 1.05 mm

[0170] The differential elongation on each side according to the equation [Mathematical Formula 4] is:

[0171] Δ1 = (1200 / 2)×65×(27.10 -6 –9.10 -6 ) = 0.702 mm

[0172] Thus, between -40°C and +90°C, the assembly 2 contracts or elongates by 1.05 mm on each side relative to its nominal length at 25°C, and the glue seal 10 is subjected to 0.702 mm of shear on each side in one direction or the other between -40°C and +90°C.

[0173] When the glue seal 10 does not have the ability to absorb such shear, this may result in it rupturing, thereby damaging the assembly 2, or causing the assembly 2 to flex and / or bend in the manner of a bimetallic strip.

[0174] Furthermore, the dimensional variations of the component 2 require that the instrument panel (not shown) be capable of absorbing these dimensional variations, i.e., by providing sufficient clearances between the component 2 and the elements forming said instrument panel. Otherwise, said elements of the instrument panel would come into contact with one another and be subjected to stresses which could lead to damage or at least to the generation of grinding noises and / or squeaking.

[0175] Figure 2 is a simplified schematic diagram of an assembly 20 according to the invention which is subjected to strong temperature changes.

[0176] Figure 2 A schematic diagram of an assembly 20 according to the invention is shown, which is designed to receive said display device 4 which is subject to strong temperature variations.

[0177] The assembly 20 comprises:

[0178] - forming a facade 6 of a plate made of glass, designed to be placed in front of said display device 4;

[0179] a support 8 made of magnesium alloy, designed to support the facade 6 and formed by two consecutive parts of the support 22 situated in the Y direction; and

[0180] A glue seal 10 which secures the facade 6 to the support 22 .

[0181] “At least two consecutive support portions 22 ” means that the support portions 22 are placed one after another in the Y direction. For example, the support portions 22 are aligned in the Y direction.

[0182] The supporting portions 22 , which are identical in size to one another, face different portions of the facade 6 , so that all the supporting portions 22 together face this facade 6 .

[0183] like Figures 5 to 7 As shown, the two support portions 22 are symmetrical to each other with respect to a symmetry plane perpendicular to the Y direction (ie, the Z direction). The two support portions 22 are symmetrical to each other with respect to the middle symmetry plane 12 having the longest length of the facade 6 (ie, the Y direction).

[0184] The mid-plane of the facade 12 and the mid-plane of the component 12 merge.

[0185] In the assembly according to the invention, the middle plane 30 of the support portion 22 is considered to be one quarter of the way along the length of the facade 6 relative to its middle plane 12 and to be displaced together with the facade 6 as it expands.

[0186] The following formulas [Math 5] and [Math 6] are used to calculate the elevation D2 caused by the expansion. F and support D2 S The elongation is evaluated.

[0187] [Mathematical formula 5]

[0188] D2 F =D2' F =L / 4×b×ΔT

[0189] D2 F represents the displacement of the middle plane of the support portion 30 relative to the middle plane of the facade 12. Within the temperature range ΔT, the value D2 F This corresponds to the expansion of the portion of the facade 6 having a length of L / 4.

[0190] D2'F represents the displacement of the end of the facade 6 relative to the middle plane of the support portion 30. Within the temperature range ΔT, the value D2' F This corresponds to the expansion of the portion of the facade 6 having a length of L / 4.

[0191] These two values ​​D2 F and D2' F Based on the same length L / 4, a single expansion coefficient b and a single temperature range ΔT. Therefore, the values ​​D2 F and D2' F are equal.

[0192] [Mathematical formula 6]

[0193] D2 S =L / 4×a×ΔT

[0194] D2 F is the amount of extension or contraction of the facade 6 starting from the mid-plane of the facade 12, in millimeters;

[0195] D2 S is the amount of extension or contraction of the support 8 starting from the mid-plane of the support portion 30, in millimeters;

[0196] The elongation of the component called D2 corresponds to the elongation D2 of the facade 6 at the mid-plane of the facade F and the elongation D2 of the support S Therefore, D2 is expressed as follows.

[0197] [Mathematical formula 7]

[0198] D2=D2 F +D2 S =(L / 4)×(a+b)×ΔT

[0199] The differential elongation Δ2 corresponds to the elongation D2 of the support S and the elongation of the facade D2' F The absolute value difference between them.

[0200] [Mathematical formula 8]

[0201] Δ2=|D2 S -D2' F |=|(L / 4)×(ab)×ΔT|

[0202] In this example, the length L of the assembly 20 measures 1200 mm.

[0203] The temperature difference ΔT is 65°C.

[0204] The component 20 expands or contracts on each side according to the equation [Mathematical Formula 7] as follows:

[0205] D2 = D2 F + D2 S = (1200 / 4)×65×(27.10 -6 +9.10 -6 ) = 0.702 mm

[0206] The difference in elongation on each side according to equation [Math 8] is:

[0207] Δ2 = (1200 / 4)×65×(27.10 -6 –9.10 -6 ) = 0.351 mm

[0208] Relative to its nominal length at 25°C, assembly 20 contracts or elongates by 0.702 mm on each side between -40°C and +90°C.

[0209] Between -40°C and +90°C, the glue seal 10 shears by 0.351 mm in one direction or the other on each side.

[0210] The invention makes it possible to achieve an elongation of the assembly 20 of + / - 0.702 mm on each side relative to the dimensions at ambient temperature over the entire temperature range. In particular, the glue seal 10 is sheared to a maximum of 0.351 mm in one direction or the other.

[0211] Therefore, the shearing amount of the adhesive seal 10 is halved.

[0212] from Figure 2 and Figure 3 As can be seen in FIG. 2 , the support portions 22 are positioned with a space 32 between each other in the Y direction.

[0213] Therefore, the spaces 32 between the support portions 22 make it possible to prevent damage or friction noise or squeaking caused by any contact between the support portions 22 .

[0214] like Figures 3 to 5 As shown, the assembly 20 comprises a metal bracket 34 designed to be fixed in a rigid manner to the facade 6 by means of an adhesive seal 10 .

[0215] "Rigidly fixed" means that there is no degree of freedom between the bracket 34 and the facade 6. The bracket 34 makes it possible to make the support portion 22 integral while leaving a certain degree of freedom in the Y direction, allowing the support portion 22 to slide along the bracket 34 when expansion occurs.

[0216] The bracket 34 includes:

[0217] - a fixing element 36 situated in the median plane of symmetry of the facade 12 in the Y direction; and

[0218] A base 38 having a substantially rectangular perimeter integral with the fixing element, wherein said base 38 supports the supporting portion 22 .

[0219] The fixing element 36 allows the middle of the facade 6 to be referenced relative to a vehicle (not shown).

[0220] The facade 6 is fixed to the support portion 22 and to the fixing element 36 of the bracket 34. The support portion 22 is interposed between the bracket 34 and the facade 6.

[0221] The bracket base 38 supports the support portion 22 with a degree of freedom that allows the support portion 22 to slide relative to the bracket 38 in the Y direction.

[0222] exist Figures 3 to 5 In the illustrated first embodiment of the invention, the assembly 20 includes a sliding connection for each support portion, wherein the sliding connection is configured to connect the bracket 34 and one of the two support portions 22 , thereby allowing translation of the support portion 22 relative to the bracket 34 in the Y direction.

[0223] The rigidity of the assembly 20 is provided by the bracket 34. The bracket 34 integrates the support portions 22 while leaving a certain degree of freedom, thanks to the sliding connection in the Y direction, allowing these support portions 22 to slide along the bracket 34 when expanded.

[0224] Again in the first embodiment, the assembly comprises a total of eight pivoting and sliding connections 40. Each support portion 22 comprises four pivoting and sliding connections 40. Thus, each sliding connection of a support portion 22 comprises four pivoting and sliding connections associated in such a way as to maintain a degree of freedom of translation in the Y direction. These pivoting and sliding connections 40 are positioned symmetrically on the support portion 22 relative to the median plane of symmetry of the facade 12.

[0225] These pivoting and sliding connections 40 each comprise an immovable guide element formed by a slide 44 embedded in the bracket base 38 and designed to cooperate with the support portion 22. The slide 44 is integral with the fixing element 36 by being screwed into the bracket 34.

[0226] Therefore, the slideway 44 allows sliding along the Y direction.

[0227] Each support portion 22 includes four hollow posts 46 extending along the X-axis of the support portion 22 .

[0228] The slide 44 comprises an orifice 48 having an oblong shape in the Y direction, designed to receive a stud 46 that can extend in said orifice 48 .

[0229] The size of the aperture 48 of the slideway 44 is also selected to allow clearance 49 for the post 46 in the Y direction.

[0230] The slide 44 is made of a polymer derived from tetrafluoroethylene, the coefficient of friction of which is low relative to the coefficient of friction of the magnesium forming the support portion 22 .

[0231] The pivot-slide connections 40 each comprise a main blocking screw 50 extending along the X axis and positioned in one of the hollow pillars 46 of the support portion 22. The head 52 of the blocking screw 50 is wider than the orifice 48 of the slideway 44.

[0232] The pivoting sliding connection devices 40 also each include two secondary blocking screws 54 , which are embedded in the bracket base 38 and the slide 44 along the X axis in the opposite direction to the main blocking screws 50 so that the slide 44 is interposed between the main blocking screws 50 and the secondary blocking screws 54 .

[0233] These secondary blocking screws 54 may be replaced by overmolding the runners 44 onto the bracket base 38 .

[0234] In this way, the slideway 44 is optimally fixed to the bracket base 38 due to the stresses exerted in two opposite directions by the primary blocking screw 50 and the secondary blocking screw 54 .

[0235] exist Figure 5In the example shown, each support portion 22 comprises four pivot-sliding connections 40 located at the four corners of an imaginary rectangle inscribed in the support portion 22 .

[0236] Figure 6 A second embodiment of the invention is shown. In this second embodiment, the pivoting sliding connection 40, the support portion 22 and the bracket 34 are identical to those of the first embodiment. Only the arrangement of the pivoting sliding connection 40 differs from the first embodiment.

[0237] Each supporting portion 22 is designed to cooperate with three pivoting sliding connections 40 positioned in an alternating manner in the Y direction.

[0238] Figure 7 A third embodiment of the present invention is shown.

[0239] In this embodiment, the bracket base 38 comprises:

[0240] - Six notches 60 designed to allow the insertion of six hooks 62 belonging to each supporting portion 22 .

[0241] Thus, the two supporting parts 22 comprise twelve notches 60 allowing the insertion of twelve hooks 62. The number of hooks and notches may be different from twelve.

[0242] These hooks 62 of the support portion 22 are designed to make the support portion 22 integral when it is assembled with the bracket base 38 , while leaving a degree of freedom of translation in the Y direction.

[0243] To assemble the support portion 22 on the bracket base 38 , the hook 62 is inserted into the recess 60 and the support portion 22 is then slid relative to the bracket base 38 such that the hook 62 engages the bracket base 38 while leaving translational freedom in the Y direction.

[0244] The notch 60 is located on each side edge 64 of the bracket 34 , the side edges 64 of the bracket 34 being parallel to the maximum length of the bracket 34 .

[0245] Similarly, in the corresponding Figure 7 In the embodiment of FIG. 4 , each support portion 22 comprises a pivoting sliding connection 40 and six notches 62 located on two parallel side edges 64 of the support portion 22 , thereby maintaining the degree of freedom of translation in the Y direction.

[0246] Each support portion 22 includes two stops in order to limit the displacement of this support portion 22 relative to the support base 38 while allowing a certain degree of translation equal to or greater than the maximum expansion value.

[0247] Stoppers corresponding to the ends of the oblong aperture 48 are formed on the pivot-slide connection 40 .

[0248] according to Figure 8 In one embodiment shown, the assembly 20 includes a slide 44 between the hook 62 and the support portion 22, so that the bracket 34 can slide between the hook 62 and the support portion 22 with less friction in the Y direction. The slide 44 is integral with the support portion 22.

[0249] The slideway 44 includes a guide rib 70 , which is located on a plane axially symmetrical to the maximum length of the slideway 44 and is designed to cooperate with a groove of a bracket 72 , wherein the rib 70 extends in the Y direction.

[0250] The guide ribs 70 allow the support portion 22 to slide along the bracket in the Y direction when thermal expansion occurs.

Claims

1. An assembly (20) for receiving at least one display device (4), comprising: - a facade (6) made of a first material having a first coefficient of expansion, in particular made of glass, said facade (6) being designed to be placed in front of said display device (4); - a support (8) made of a second material, in particular metal, having a second coefficient of expansion, which is higher than the first coefficient of expansion, the support (8) being designed to support the facade (6) and being formed by at least two supporting portions (22) situated in succession in the main expansion direction (Y) of the assembly; as well as - at least one adhesive (10) which fixes the facade (6) to the support portion (22).

2. The assembly (20) according to claim 1, comprising a bracket (34), in particular made of metal, designed to be fixed to the facade (6) in a rigid manner, in particular by means of an adhesive (10).

3. The assembly (20) of claim 2, wherein: The support (34) comprises: - a fixing element (36) designed to be fixed to said facade (6); and - a base (38) integral with the fixing element, wherein the base (38) supports the supporting portion (22).

4. An assembly (20) as claimed in any one of the preceding claims, further comprising at least one sliding connection (40) configured to connect the bracket (34) and one of the support portions (22) to allow the support portion (22) to translate relative to the bracket (34) in the main expansion direction (Y).

5. An assembly (20) according to any one of the preceding claims, comprising at least one pivot-sliding connection (40) comprising a guide element (42) designed to cooperate with one of the support parts (22).

6. The assembly (20) of claim 5, wherein: Each sliding connection comprises at least two pivoting sliding connections (40) associated in such a way as to maintain a degree of freedom of translation in said main expansion direction (Y).

7. The assembly (20) according to any one of claims 5 and 6, wherein Each support portion (22) comprises at least two pivot-sliding connections (40) spaced apart from one another in the main expansion direction (Y) of the assembly.

8. The assembly (20) according to any one of claims 5 to 7, wherein Each support portion (22) comprises at least two pivoting sliding connections (40) offset from one another on an axis (Z) transverse to the main expansion direction (Y) of each support portion (22).

9. The assembly (20) according to any one of claims 3 to 8, wherein The support base (38) comprises: - a plurality of notches (60) designed to allow the insertion of a hook (62) belonging to one of the support parts (22); and - These hooks (62) of the support portion (22) are designed to make the support portion (22) integral with the support base (38) when the support portion (22) and the support base (38) are assembled together, while leaving translational freedom in the main expansion direction (Y).

10. The assembly (20) of claim 9, wherein: Each sliding connection (22) comprises a pivoting sliding connection (40) and at least two hooks (62) positioned on two parallel side edges (64) of the support portion (22) to maintain translational freedom in the main expansion direction (Y).

11. A module, in particular a vehicle dashboard, comprising a component (20) as claimed in any one of the preceding claims and a display device (4) positioned facing a facade (6) of the component (20).

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