Mechanism, and use of the mechanism, for placing, on a wall of a device, an assembly comprising the mechanism, and the assembly

Abstract

The invention relates to a mechanism (1) for placing, on a target location (15) on a wall (16) of a device, an assembly (10) comprising a support (11) and a surface-mounted component (13), the mechanism (1) comprising at least one resilient tab (2, 3) which is attached to the wall (16) and comprises another, free portion (2'',3''), the at least one tab (2, 3) being configured to be tensioned when it is positioned at a distance from the wall (16), in order to insert the assembly (10) in an insertion direction (DI), the mechanism further comprising at least one clearance face (4, 5) protruding from the wall (16) such that at least part of the support (11) bears against the at least one clearance face (4, 5) during the insertion of the assembly (10), the protrusion determining a spacing between the support (11) and the wall (16) to allow the surface-mounted component (13) to pass, without making contact with the wall (16) during the insertion of the assembly (10), the at least one clearance face (4, 5) also being positioned on the wall (16) and dimensioned such that, when the surface-mounted component (13) on the support faces the target location (15), an expansion of the at least one resilient tab (2, 3) has the effect of pressing the support (11) against the wall (16), the surface-mounted component (13) on the support being pressed against the target location (15).

Description

[0001] DESCRIPTION

[0002] MECHANISM, USE OF THE MECHANISM, FOR INSTALLING ON A WALL OF A DEVICE AN ASSEMBLY COMPRISING SAID MECHANISM, AND SAID ASSEMBLY

[0003] The present invention relates to the field of electronic terminals, and in particular to the assembly of surface-mounted components.

[0004] It is known to mount a surface-mounted component, for example a gasket associated with a MEMS microphone, on a support, for example an electronic card or a printed circuit using a flange and a screw to ensure support of the component against an external cover of the device, and in particular, in the case of a gasket, to ensure compression of a gasket against the external cover which may comprise a channel, for example an acoustic channel.

[0005] Mounting with a flange and screw requires several operations and is complex to implement. In addition, during mounting, significant precautions must be taken to avoid damaging the surface-mounted component. In addition, sufficient space must be provided during mounting to allow the use of mounting tools in the mounting area.

[0006] The invention therefore aims to propose a solution to all or part of these problems.

[0007] The present invention relates to a mechanism for placing, on a target location of a wall of a device, an assembly comprising a support and a surface-mounted component of the support: - at least one elastic tab attached to the wall by a connecting portion of the at least one elastic tab, the at least one elastic tab comprising a free bearing portion, the at least one tab being configured to be tensioned when the bearing portion is moved away from the wall, so as to allow insertion of the assembly between the bearing portion of the at least one elastic tab and the wall in a defined insertion direction to bring the surface-mounted component of the support opposite the target location;

[0008] - at least one clearance face positioned so as to project from the wall so that at least a portion of the support bears on the at least one clearance face during insertion of the assembly, the projection from the wall of the at least one clearance face being dimensioned so that, when the at least a portion of the support bears on the at least one clearance face, a gap between the support and the wall allows the surface-mounted component of the support to pass, without contact with the wall during insertion of the assembly, the at least one clearance face being further positioned on the wall and dimensioned in the direction of the insertion direction so that, when the surface-mounted component of the support is opposite the target location, the at least a portion of the support is no longer bearing on the at least one clearance face, and so that a relaxation of the at least one elastic tab has the effect of pressing the support against the wall,the surface-mounted component of the socket being pressed against the target location.,

[0009] According to these provisions, the assembly installation does not require any flanges, screws, or any other tools. The component only comes into contact with the wall when the assembly is carried out, by pressing against the wall at the target location. It is not at risk of being damaged by friction against the wall during assembly.

[0010] According to one embodiment, the invention comprises one or more of the following features, alone or in a technically acceptable combination. According to one possibility, the mechanism comprises a shoulder positioned after the clearance face in the insertion direction, so that, when the surface-mounted component of the holder is opposite the target location, the at least a portion of the holder is disposed beyond the shoulder.

[0011] The shoulder marks the end of the support on the release face. The shoulder also prevents the support from coming out in the opposite direction to the insertion direction.

[0012] The mechanism comprises a bearing face which is offset from the edge of the clearance face towards the wall and extends along the insertion direction. When the at least one part of the support is no longer bearing against the clearance face, it bears against the bearing face.

[0013] According to one possibility, the mechanism comprises a stop transverse to the insertion direction and positioned beyond the shoulder in the insertion direction.

[0014] The stop is positioned beyond the support face and stops the insertion of the support in the insertion direction. The part(s) of the support is thus housed in the final position between the shoulder and the stop, against the support face.

[0015] The relative distance between the bearing face and the wall at the target location can be used to define the bearing level of the surface-mounted component against the target location.

[0016] According to one possibility, the mechanism comprises two release faces, such that two parts of the support bear respectively on each of the two release faces during insertion of the assembly, the two release faces being positioned on the wall at a distance from each other greater than a dimension of the surface-mounted component, said dimension being determined transversely to the direction of insertion, such that, with the surface-mounted component of the assembly attached to a portion of the support located between the two parts of the support, said portion of the support passes between the two release faces during insertion of the assembly.

[0017] According to these provisions, stability of the support resting on two separate parts, and consequently stability of the assembly as a whole, is better ensured during insertion of the assembly, and the passage of the surface-mounted component between the two clearance faces, without contact with the wall, is facilitated.

[0018] According to one possibility, the mechanism comprises two elastic tabs positioned on the wall at a distance from each other greater than a dimension of the surface-mounted component of the support, said dimension being determined transverse to the axis in the direction of insertion, such that the surface-mounted component of the assembly passes between the two elastic tabs during insertion of the assembly.

[0019] According to these provisions, stability of the support and consequently stability of the assembly as a whole is better ensured during insertion of the assembly.

[0020] The present invention also relates to a device comprising a wall with a target location, the wall comprising a mechanism as described above.

[0021] According to one possibility, the device comprises an assembly, the assembly comprising a carrier and a surface-mounted component of the carrier.

[0022] Alternatively, the surface-mounted component protrudes from the surface of the socket.

[0023] According to one possibility, the support is a printed circuit board.

[0024] According to one possibility, the target location includes a through hole.

[0025] Alternatively, the surface-mounted component includes a seal, such as an acoustic seal.

[0026] According to one possibility, the mechanism comprises the assembly further comprises a microphone. According to one possibility, the microphone is a microelectromechanical system type microphone, called MEMS.

[0027] Alternatively, the holder is operatively coupled to the microphone.

[0028] According to one possibility, the acoustic seal forming a tubular internal conduit around an axis of the seal.

[0029] According to one possibility, the acoustic seal is compressible along the seal axis.

[0030] According to one possibility, the acoustic seal is fixed by one side of the acoustic seal to the support so that said internal conduit is acoustically coupled to the microphone by one end of said internal conduit, another end of said internal conduit being configured to be acoustically coupled with a hole passing through the wall, the axis of the acoustic seal being aligned with an axis of the through hole, so as to form, with the through hole, an acoustic channel configured to conduct sound between one side of the wall and the microphone of the assembly placed on another side of the wall.

[0031] According to one possibility, when the axis of the acoustic seal is aligned with the axis of the through hole, the at least one part of the support is no longer supported on the at least one clearance face. Thus, a relaxation of the at least one elastic tab has the effect of pressing the support against the wall by compressing the acoustic seal in the direction of the axis of the acoustic seal.

[0032] According to one possibility, the direction of insertion transverse to the axis of the joint.

[0033] According to one possibility, the insertion direction being defined to bring the component the axis of the acoustic seal into alignment with the axis of the through hole. According to one possibility, the projection of the at least one clearance face relative to the wall is dimensioned so that, when the at least one part of the support bears on the at least one clearance face, a gap between the support and the wall allows the acoustic seal, uncompressed, to pass, without contact with the wall during the insertion of the assembly, the at least one clearance face being further positioned on the wall and dimensioned in the direction of the insertion direction so that, when the axis of the acoustic seal is aligned with the axis of the through hole, the at least one part of the support is no longer bearing on the at least one clearance face, and so that a relaxation of the at least one elastic tab has the effect of pressing the support against the wall,by compressing the acoustic seal in the direction of the acoustic seal axis against the target location and the through hole.,

[0034] Thanks to these provisions, it is possible to use a simple, non-angled acoustic joint, and the acoustic channel performs better. Indeed, depending on the orientation of the acoustic channel and the perpendicular direction of assembly of the parts, the known method of mounting the MEMS microphone according to the prior art required, in addition to a flange and screws, a specific, non-standard joint, when the channel forms a 90° bend, which complicated the development of the microphone function because of the acoustic reverberations caused by the bend, and which could harm the acoustic performance of the final assembly.

[0035] According to one possibility, the printed circuit has a main extension in a plane transverse to the axis of the joint.

[0036] According to one possibility, the axis of the joint is maintained transversely to an extension plane of the wall.

[0037] According to one possibility, the at least one tensioned elastic tab brings the printed circuit back towards the wall. In particular, the at least one elastic tab brings a main extension plane of the printed circuit back towards the extension plane of the wall.

[0038] According to one possibility, the axis of the joint is maintained transversely to an extension plane of the wall.

[0039] According to one possibility, the at least one elastic tab under tension brings a plane of the main extension of the printed circuit towards an extension plane of the wall.

[0040] Alternatively, the surface-mounted component of the holder may include an LED, or a coil or other inductive component to be positioned against a target location on a wall.

[0041] According to one possibility, the device is electronic equipment, for example a mobile terminal. The present invention also relates to a use of the mechanism as described according to one of the possibilities described above, to obtain a device according to one of the possibilities described above, by implementing a step of inserting the assembly between the spaced free portion of the at least one elastic tab under tension and the wall, in an insertion direction being defined to bring the surface-mounted component of the support opposite the target location, and such that at least one part of the support bears on the at least one clearance face during the step of inserting the assembly, the projection of the at least one clearance face being dimensioned so that, when the at least one part of the support bears on the at least one clearance face, a gap between the support and the wall allows the surface-mounted component,to pass, without contact with the wall during the insertion of the assembly, the at least one release face being further positioned on the wall and dimensioned, in the direction of the insertion direction, so that, when the surface-mounted component of the support is opposite the target location, the at least one part of the support is no longer supported on the at least one release face, and so that a relaxation of the at least one elastic tab has the effect of pressing the support against the wall, the surface-mounted component of the support being pressed against the target location.,

[0042] According to one aspect, the invention relates to a device according to one of the embodiments described above, obtained by the use of the mechanism, according to one of the embodiments described above.

[0043] For a better understanding, an embodiment and / or implementation of the invention is described with reference to the attached drawings representing, by way of non-limiting example, an embodiment or implementation respectively of a device and / or a method according to the invention. The same references in the drawings designate similar elements or elements whose functions are similar. [Fig. 1] is a perspective representation of the mechanism according to an embodiment of the invention for placing an assembly on a wall of a device.

[0044] [Fig. 2] is another representation of the mechanism of Figure 1, during insertion of the assembly between the legs and the release faces of the mechanism.

[0045] [Fig. 3] is another representation of the mechanism of Figure 1, at the end of an insertion of the assembly between the legs and the release faces of the mechanism.

[0046] [Fig. 4] is another perspective representation according to a sectional plane of the mechanism of figure 1, at the end of an insertion of the assembly between the tabs and the release faces of the mechanism, the assembly thus being put in place, in its final configuration, on the wall of the case.

[0047] [Fig. 5] is a schematic representation of the step of using the mechanism according to one embodiment of the invention, to place the assembly on a wall of a device.

[0048] The invention relates to a mechanism 1 for placing, on a wall 16 of a device, an assembly 10 comprising a support 11 and a surface-mounted component of the support 13. In particular, in the embodiment shown in the figures, the support is a printed circuit 11 and the surface-mounted component is a seal 13. It will be noted that the seal 13 may for example be an acoustic seal or a sealing gasket. In the example described, the seal 13 is an acoustic seal. The assembly further comprises a microphone 12. The device may be a smartphone, a mobile terminal, computer equipment, etc. In particular, in the example shown in the figures, it is a device equipped with a microphone for capturing sound. The microphone is for example a microphone of the microelectromechanical system type, also called MEMS.The acoustic seal 13 forms a tubular internal conduit 14, visible in FIG. 4, around an axis A of the seal 13, said acoustic seal 13 being compressible along the axis A of the seal 13; FIG. 4 represents, in perspective and in section, the assembly 10 in its final configuration, i.e. once it has been put in place on the wall 16 of the housing of the device; the acoustic seal 13, in this final configuration of the assembly 10, is compressed.

[0049] Before the assembly 10 is put into place in its final configuration, the acoustic seal 13, fixed by one side of the acoustic seal 13 to the printed circuit 11, is relaxed along the axis A, so that it occupies a larger volume along this axis A than that which it will finally occupy in its final configuration, in which it is compressed between the printed circuit 11 and the wall 16. It is important that during the installation of the assembly the acoustic seal is not damaged or even torn off by friction against the wall 16 in particular.

[0050] As indicated above, the acoustic seal 13 is fixed by one side of the acoustic seal 13 to the printed circuit 11, so that the internal conduit 14 is acoustically coupled to the microphone 12 by one end of said internal conduit 14; another end of said internal conduit 14 is configured to be acoustically coupled, in the final configuration of the assembly 10, with a hole 15 passing through the wall 16, the axis A of the acoustic seal 13 being aligned with an axis of the through hole 15, so as to form, with the through hole 15, a channel, in particular an acoustic channel 14, 15 configured to conduct a sound between one side of the wall and the microphone 12 of the assembly 10 placed on another side of the wall 16, as shown in FIG.

[0051] Furthermore, the printed circuit 11 is operatively coupled to the microphone 11, so as to be able to receive and process the acoustic signals generated by the microphone 12, representative of a sound received by the microphone 12.

[0052] The printed circuit 11 has a main extension in a plane transverse to the axis A of the seal. In other words, the seal extends more or less, depending on whether it is compressed or not, along the axis A transverse to the plane of the main extension of the printed circuit 11.

[0053] The mechanism 1 according to one embodiment of the invention comprises:

[0054] - at least one elastic tab 2, 3 attached to the wall 16 by a portion 2', 3' of the at least one elastic tab 2, 3; the at least one elastic tab 2, 3 comprises another free portion 2”, 3”, the at least one tab 2, 3 being configured to be tensioned when the other portion 2”, 3” is moved away from the wall 16, for example in a separation direction DE shown in FIG. 2, so as to allow insertion of the assembly 10 between the free portion of the at least one elastic tab 2, 3 and the wall 16 in an insertion direction DI transverse to the axis A of the acoustic seal 13, the axis of the seal A being held transversely to an extension plane of the wall 16. Thus, the plane of the main extension of the printed circuit 11 is brought back, by the at least one elastic tab 2, 3 tensioned, towards said extension plane of the wall 16.

[0055] The direction of insertion DI, in addition to being transverse to the axis A of the acoustic seal 13, is defined to bring the axis A of the acoustic seal 13 into alignment with the axis of the through hole 15.

[0056] The mechanism 1 according to one embodiment of the invention further comprises at least one clearance face 4, 5 placed projecting from the wall 16 so that at least one part of the printed circuit 11 rests on the at least one clearance face 4, 5 during the insertion, described above, of the assembly 10. The at least one clearance face may comprise two clearance faces 4, 5, as shown in FIG. 1, to promote stability of the printed circuit 11 which thus has two bearing parts AP1, AP2 on each of the two clearance faces 4, 5, on either side of the microphone 12 and the acoustic seal 13, as shown in FIG. 2.The projection, relative to the wall 16, of the at least one clearance face 4, 5 is dimensioned so that, when the at least one part of the printed circuit 11 is resting AP1, AP2 on the at least one clearance face 4, 5, a gap between the printed circuit 11 and the wall 16 allows the acoustic seal 13, not compressed, to pass, without contact with the wall 16 during the insertion of the assembly 10.

[0057] According to an exemplary embodiment, the mechanism 1 comprises two release faces 4, 5, so that two parts of the printed circuit 11 bear respectively on each of the two release faces 4, 5 during the insertion of the assembly 10. The two release faces 4, 5 are positioned on the wall 16 at a distance from each other greater than a dimension of the microphone 12 and the acoustic seal 13, said dimension being considered transversely to the axis A of the acoustic seal 13 and to the insertion direction DI, so that, the microphone 12 and the acoustic seal 13 of the assembly 10 being attached to a portion of the printed circuit 11 located between said two parts of the printed circuit 11, said portion of the printed circuit 11 passes between the two release faces during the insertion of the assembly 10.

[0058] Thus, stability of the printed circuit supported on two separate parts, and consequently stability of the assembly as a whole, is better ensured during insertion of the assembly, and the passage of the acoustic seal between the two clearance faces, without contact with the wall, is facilitated.

[0059] In particular, the mechanism 1 can advantageously comprise two elastic tabs 2, 3 positioned on the wall 16 spaced apart by a sufficient distance so that the microphone 12 of the assembly 10 passes between the two elastic tabs 2, 3 during the insertion of the assembly 10. Thus, stability of the printed circuit and consequently stability of the assembly as a whole is better ensured during the insertion of the assembly, and the insertion of the assembly is facilitated.

[0060] The clearance face(s) 4, 5 is (are) further positioned on the wall 16 and dimensioned, in the direction of the insertion direction DI, so that, when the axis A of the acoustic seal 13 is aligned with the axis of the through hole 15, i.e.when the assembly reaches its final position, the part(s) of the printed circuit 11 are no longer supported on the clearance face(s) 4, 5; in other words, the positioning on the wall and the dimensioning, in the direction of the insertion direction DI, of the clearance face(s) 4, 5, determines an end of support FAP of the part(s) of the printed circuit 11 on the clearance face(s) 4, 5, as shown in FIG. 3; so that a relaxation, in a relaxation direction DET opposite to the spacing direction DE, of the at least one elastic tab 2, 3 has the effect of pressing the printed circuit 11 against the wall 16 by compressing the acoustic seal 13 in the direction of the axis A of the acoustic seal 13, in other words in a compression direction DC parallel to the axis A.

[0061] The mechanism 1 comprises a shoulder 17 visible in Figure 3, positioned after the clearance face in the insertion direction, so as to materialize the end of the FAP support. Thus, when the seal 13 is opposite the target location, at least one part of the support 11 is arranged beyond the shoulder 17 in the insertion direction.

[0062] The mechanism comprises a bearing face 18 visible in Figure 2 which is offset from the edge of the clearance face towards the wall 16 and extends along the insertion direction DI. When the at least one part of the support is no longer bearing against the clearance face, it bears against the bearing face 18. In the embodiment shown in the figures, two bearing faces are arranged on either side of the target location 15. Beyond the bearing face, the mechanism comprises a stop 19 transverse to the insertion direction DI. The stop 19 makes it possible to stop the insertion of the support in the insertion direction. The part or parts of the support 11 is thus housed in the final position between the shoulder 17 and the stop 19, against the bearing face 18.

[0063] The distance between the bearing face 18 and the wall 16 at the target location 15 defines the compression level of the seal 13.

[0064] According to these provisions, the installation of the assembly does not require any flange, screws or any other tools, the acoustic seal is a simple, non-angled seal, and the acoustic channel is more efficient.

[0065] According to one aspect, the invention relates to a device comprising a wall 16 with a through hole 15, the wall 16 comprising a mechanism 1 according to one of the embodiments described above, for example electronic equipment or a mobile terminal.

[0066] More particularly, the invention relates to a device comprising an assembly 10 as described above, the printed circuit 11 of the assembly being pressed against the wall 16, by at least one elastic tab 2, 3 of the mechanism 1, by compressing the acoustic seal 13 in the direction of the axis A of the acoustic seal 13.

[0067] According to another aspect, the invention relates to a use 100 of the mechanism 1 according to one of the embodiments described above, for placing, on a wall 16 of a device, the assembly 10 described above, and thus to obtain the device previously described, in which the printed circuit 11 of the assembly is pressed against the wall 16, by at least one elastic tab 2, 3 of the mechanism 1, by compressing the acoustic seal 13 in the direction of the axis A of the acoustic seal 13; said use 100 of the mechanism 1 comprises the implementation of a step of insertion 101 of the assembly 10 between the free portion spaced apart from the at least one elastic tab 2, 3 of the mechanism 1. According to one aspect, the invention relates to a device obtained by the use 100 of the mechanism 1, for example electronic equipment or a mobile terminal.

[0068] Alternatively, the surface-mounted component of the holder may include an LED, or a coil or other inductive component to be positioned against a target location on a wall.

Claims

CLAIMS 1. Mechanism (1) for placing, on a target location (15) of a wall (16) of a device, an assembly (10) comprising a support (11) and a surface-mounted component of the support (13): - at least one elastic tab (2, 3) attached to the wall (16) by a connecting portion (2', 3') of the at least one elastic tab, the at least one elastic tab (2, 3) comprising a free bearing portion (2”, 3”), the at least one tab (2, 3) being configured to be tensioned when the bearing portion (2”, 3”) is moved away from the wall (16), so as to allow insertion of the assembly (10) between the bearing portion of the at least one elastic tab (2, 3) and the wall (16) in an insertion direction (DI) defined to bring the surface-mounted component of the support (13) opposite the target location (15); - at least one clearance face (4, 5) projecting from the wall (16) so that at least a portion of the support (11) bears on the at least one clearance face (4, 5) during insertion of the assembly (10), the projection from the wall (16) of the at least one clearance face (4, 5) being dimensioned so that, when the at least a portion of the support (11) bears on the at least one clearance face (4, 5), a gap between the support (11) and the wall (16) allows the surface-mounted component of the support (13) to pass, without contact with the wall (16) during insertion of the assembly (10), the at least one clearance face (4, 5) being further positioned on the wall (16) and dimensioned in the direction of the insertion direction (DI) so that, when the surface-mounted component surface of the support (13) is opposite the target location (15), the at least one part of the support (11) is no longer supported on the at least one clearance face (4,5), and so that a relaxation of the at least one elastic tab (2, 3) has the effect of pressing the support (11) against the wall (16), the surface-mounted component of the support (13) being pressed against the target location (15)., 2. Mechanism (1) according to claim 1, comprising a shoulder (17) positioned after the clearance face (4, 5) in the insertion direction (DI), and configured so that, when the surface-mounted component of the support (13) is facing the target location (15), the at least part of the support (11) is disposed beyond the shoulder (17).

3. Mechanism (1) according to the preceding claim, comprising a stop (19) transverse to the insertion direction (DI) and positioned beyond the shoulder (17) in the insertion direction.

4. Mechanism (1) according to any one of the preceding claims, comprising two clearance faces (4, 5), such that two parts of the support (11) bear respectively on each of the two clearance faces (4, 5) during insertion of the assembly (10), the two clearance faces (4, 5) being positioned on the wall (16) at a distance from each other greater than a dimension of the surface-mounted component (13), said dimension being determined transversely to the insertion direction (DI), such that, with the surface-mounted component (13) of the assembly (10) attached to a portion of the support (11) located between the two parts of the support (11), said portion of the support (11) passes between the two clearance faces during insertion of the assembly (10).

5. Mechanism (1) according to any one of the preceding claims, comprising two elastic tabs (2, 3) positioned on the wall (16) at a distance from each other greater than a dimension of the surface-mounted component of the support (13), said dimension being determined transversely to the axis (A) in the insertion direction (DI), so that the surface mounted component (13) of the assembly (10) passes between the two elastic tabs (2, 3) during insertion of the assembly (10).

6. Device comprising a wall (16) with a target location (15), the wall (16) comprising a mechanism (1) according to one of claims 1 to 5.

7. A device according to claim 6, comprising an assembly (10), the assembly (10) comprising a support (11) and a surface-mounted component of the support (13).

8. Device according to any one of claims 6 to 7, in which the surface mounted component (13) projects from the surface of the support.

9. Device according to any one of claims 6 to 8, in which the support (11) is a printed circuit.

10. Device according to any one of claims 6 to 8, wherein the target location comprises a through hole (15).

11. Device according to one of claims 6 to 9, in which the surface-mounted component (13) comprises a seal.

12. The device of claim 11, wherein the assembly further comprises a microphone (12).

13. Device according to any one of claims 6 to 12, wherein the device is electronic equipment, for example a mobile terminal.

14. Use (100) of the mechanism (1) according to one of claims 1 to 5, to obtain a device according to one of claims 6 to 12, by implementing a step (101) of inserting the assembly (10) between the spaced free portion of the at least one elastic tab (2, 3) under tension and the wall (16), according to an insertion direction (DI) being defined to bring the surface-mounted component of the support (13) opposite the target location (15), and so that at least a portion of the support (11) bears on the at least one clearance face (4, 5) during the step of inserting the assembly (10), the projection of the at least one clearance face (4, 5) being dimensioned so that, when the at least a portion of the support (11) bears on the at least one clearance face (4, 5), a spacing between the support (11) and the wall (16) allows the surface-mounted component (13) to pass, without contact with the wall (16) during insertion of the assembly (10),the at least one clearance face (4, 5) being further positioned on the wall (16) and dimensioned, in the direction of the insertion direction (DI), so that, when the surface-mounted component of the support (13) is opposite the target location (15), the at least one part of the support (11) is no longer resting on the at least one clearance face (4, 5), and so that a relaxation of the at least one elastic tab (2, 3) has the effect of pressing the support (11) against the wall (16), the surface-mounted component of the support (13) being pressed against the target location (15).,

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