Device for fixing electronic component to casing
By providing uniform array of concave elements and projecting elements on the outer surface of the base of the fixing device, the problem of insufficient mechanical strength of the fixing device in the prior art is solved, and stable adhesion and durability to the tire are achieved.
Patent Information
- Application Number
- CN202380081276.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-11-25
- Filing Date
- 2023-11-15
- Publication Date
- 2025-07-04
AI Technical Summary
In the prior art, the patch used to fix the electronic components has mechanical strength problems during the use of the outer tire, especially after the adhesive is fixed, which can easily lead to a decrease in the mechanical strength of the system.
A fixing device consisting of a base and a retaining wall is provided with a uniform array of concave elements and projecting elements on the outer surface of the base to store the adhesive, and by controlling the distribution and disconnection of the adhesive, the mechanical strength and durability of the fixing device are ensured.
The bonding strength between the fixing device and the tire is improved, the stability and durability of electronic components during the use of the tire is ensured, and the mechanical strength decrease caused by the uneven distribution of the adhesive is avoided.
Smart Images

Figure CN120265476A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a device for fixing an electronic component to a tire carcass, intended to transmit identification information about the tire carcass or physical parameters of the tire carcass measured by the electronic component during the service life of the tire carcass. Background Art
[0002] The development of electronic objects in tire carcasses enables tire carcasses to be connected and already connected, which promotes the development of new services, thus optimizing the use of tire carcasses, for example. Now, these electronic components sometimes have thermomechanically vulnerable parts, which requires the insertion of the electronic components after the manufacture of the tire carcass. Therefore, fixing devices are inserted as interfaces between the electronic components and the tire. These fixing devices are generally elastic so as not to cause high stress to the tire carcass, thus being able to conform to the significant deformations experienced by the tire carcass during use and to dampen the stress transmitted to the electronic components. One of the most common designs of such a device is a patch having a base for fixing to the tire carcass and provided with walls, the walls themselves being closed and extending from the base up to an opening. The walls are used to fix or hold the electronic component in place within the device, the electronic component being tightly mounted within the elastically deformable walls. Since the material of the opening is elastic, the opening allows the insertion and removal of the electronic component into and from the patch.
[0003] Document WO2018 / 150141A1 illustrates a patch having this property. Although the patch specifically has a clamping system to limit the opening, it conforms at any point to a patch for fixing an electronic object to a tire carcass. In addition, this type of patch sometimes poses mechanical strength problems for the system comprising the patch and the electronic component during the use of the tire carcass to which the system is fixed, especially when the patch (with or without electronic devices) is fixed to the tire by means of an adhesive after the curing of the tire carcass.
[0004] The aim of the following subject matter of the present invention is to solve the problem of the mechanical durability of the fixing patch while being economical, reliable and not affecting the operation of the electronic component housed within the fixing patch. Summary of the Invention
[0005] The present invention relates to a device for fixing an electronic component to a tire carcass wall, the device comprising:
[0006] ● a base capable of being fixed to the tire carcass wall by its outer surface;
[0007] ● a closed retaining wall capable of holding the electronic component, the retaining wall extending from the base up to a free edge and, together with the base, defining an open volume;
[0008] ● The volume, which is capable of accommodating at least a part of the electronic component, is defined by the inner surface of the base and the retaining wall, has an opening defined by the free edge of the retaining wall, and the opening is deformable to insert the electronic component into the volume or remove it from the volume;
[0009] ● The outer surface of the base, which includes a uniform array of recessed elements and protruding elements with a defined maximum height variation between 10 μm and 200 μm;
[0010] The fixing device is characterized in that the arrangement of the array of recessed elements and protruding elements is concentric around a single point on the outer surface of the base or in a checkerboard pattern, and the pairs of adjacent cells of the checkerboard are recessed elements and protruding elements.
[0011] The fixing device has a certain volume through the array of recessed elements and protruding elements, and when the device is fixed to the outer tire wall, this volume will serve as a reserve space for accommodating an adhesive-type product. Here, the term "uniform" is understood to mean that the recessed elements and protruding elements are evenly distributed on the outer surface of the base. Thus, when the base is fixed to the inner wall of the tire, it ensures that the reserve space for the adhesive applied to the outer surface of the base is evenly distributed. Even when there is direct contact between the outer surface of the base and the inner wall of the outer tire, the array also ensures that there is adhesive at the recessed elements between the outer surface of the base and the inner wall of the outer tire. By ensuring the minimum height between the bottom of the base and the base support surface, it ensures that there is a certain thickness of adhesive throughout the entire array, evenly distributed on the entire outer surface of the base, and in this way, the average thickness of this adhesive can be controlled. Depending on the nature of the adhesive and the desired disconnection mode of the fixation, the array can control the required thickness. Specifically, the disconnection of the fixation is a disconnection at the interface between the adhesive on the one hand and one of the elements on the other hand of the base and the inner wall of the outer tire. This disconnection of the fixation can also be a debonding of the internal structure of the adhesive itself, depending on the type of stress the adhesive undergoes. For some products, this debonding of the adhesive structure is controlled by the thickness of the adhesive film. Therefore, during the operation of attaching the fixing device to the inner wall of the outer tire, the array of recessed elements and protruding elements ensures the position, nature, and threshold for performing the disconnection.
[0012] In a first embodiment of the uniform array, the array consists of protruding elements that are regularly spaced from each other radially by grooves. These elements are cylindrical and are concentric about the same point on the outer surface along an axis perpendicular to the outer surface of the substrate. For example, these cylindrical elements have a circular cross-section or an elliptical cross-section. Although other processes can be used, this embodiment of the uniform groove array is well-suited for production by molding fixtures. Specifically, by simply making an imprint of the concentric uniform array on the die head of the mold that defines the outer surface of the substrate, the concentric uniform array can be made while manufacturing the fixture. The advantage of this is that the protruding elements of the array are integral with the substrate of the fixture. Additionally, due to the concentricity of these elements, even for external grooves, it is easy to remove the final device with the uniform array from the mold. Moreover, the molding process ensures the repeatability of the uniform array, thereby reducing manufacturing costs. However, this technique is designed for a relatively large residual void volume in the fixture, which is well-suited for certain types of adhesives.
[0013] In a second embodiment of the uniform array, the array comprises a checkerboard, the squares of which alternately correspond to protruding elements and recessed elements. Preferably, the checkerboard is defined in two orthogonal directions, but it is sufficient for these two directions to form an angle of 30 degrees with each other to be effective, especially when cleaning the surface before coating.
[0014] The checkerboard is advantageously made after manufacturing the fixing patch, typically obtained by a molding process. This can involve a chemical process after applying an activator through a template positioned on the outer surface of the substrate. The reactant is applied to the entire outer surface of the substrate, and then the checkerboard relief pre-determined by the template shape is formed. This can also involve a mechanical process of rubbing the outer surface of the substrate with a brush having rigid bristles arranged at regular intervals in two well-controlled directions. After the step of making the checkerboard, the outer surface of the substrate should be cleaned to remove the residual material and render the outer surface of the substrate chemically inert before applying the adhesive. Finally, this can involve heat treatment by a laser, the beam of which traces a series of straight lines that are spaced apart from each other by a distance equal to the width of the groove elements. When the laser passes through from two intersecting directions, a uniform checkerboard of recessed squares and protruding squares is produced. The latter process can produce grooves with small depth and width.
[0015] Advantageously, the width of the recessed element between two protruding elements is between 500 μm and 1500 μm.
[0016] In addition to the total volume of the adhesive that can be evenly distributed on the outer surface of the substrate, it is also necessary to ensure that the disconnection pattern at each adhesive pad is controlled to avoid the gradual disconnection of the overall fixation of the substrate due to the weakening encountered by several pads, which causes stress to be transferred to other pads, resulting in the destruction of the overall fixation of the substrate to the inner wall of the outer tire.
[0017] Now, the mechanical strength of such a pad is controlled on the one hand by the average height change between the bottom of the recessed element and the top of the protruding element, and on the other hand by the spacing distance between the two protruding elements (corresponding to the width of the recessed element). By controlling this second parameter, it is ensured that the size of each adhesive pad is sufficient to ensure the mechanical strength of each pad. Depending on the nature of the adhesive used to fix the fixing device to the inner wall of the outer tire and the type of disconnection required for such fixation, the required width can vary.
[0018] Very advantageously, the profile of the outer surface of the substrate includes protrusions, the height of which is less than or equal to the maximum height of the protruding elements of the uniform array on the outer surface of the substrate.
[0019] The presence of such protrusions on the profile of the outer surface of the substrate is to prevent the adhesive from escaping through this position when there are no protrusions outside the outer surface of the substrate. Therefore, even though the inner wall of the outer tire is concave, it is ensured that the amount of adhesive placed on the outer surface of the substrate does indeed remain below the substrate. Thus, such protrusions ensure that the total volume of the adhesive exists under the substrate. Specifically, if the coating on the outer surface of the substrate is greater than the recommended value, the average volume of the adhesive will exceed the height of the protrusions, which will cause the excess adhesive to escape during the operation of bonding the fixing device to the inner wall of the tire. In addition, during the stage of coating the fixing device, the protrusions allow mechanical control of the amount of adhesive deposited on the uniform array of recessed elements and protruding elements, which is carried out by scraping off the deposited adhesive using a straight-edge tool that can abut against the outer surface of the protrusions.
[0020] Specifically, the width of the protrusions on the outer surface profile is less than 500 μm.
[0021] Although the outer surface of the protrusion (proportional to the width of the protrusion) does not contain adhesive or is not sufficient to ensure a firm bond between the protrusion and the inner wall of the outer tire, the size of the array is still sufficient to ensure the mechanical strength of the fixing device relative to the outer tire.
[0022] Specifically, since the array arrangement of the recessed elements and the protruding elements is concentric, the void volume defined by the array is between 30 mm 3 and 120 mm 3 .
[0023] Advantageously, the outer surface of the substrate includes at least 3 protruding elements.
[0024] Advantageously, since the array of recessed elements and protruding elements is arranged in a checkerboard pattern, the void volume defined by the array is between 1 mm 3 and 10 mm 3 .
[0025] The invention also relates to an arrangement of a pneumatic tyre and a fixing device, the pneumatic tyre comprising a crown (S) and two sidewalls (F) which extend from the crown (S) and terminate at two beads (B) which are adapted to be connected to a wheel, wherein the fixing device is fixed to one of the surfaces of the pneumatic tyre, preferably to the wall located closest to the inner side of the pneumatic tyre.
[0026] The arrangement of the pneumatic tyre and the fixing device is essentially the purpose of the fixing device. In this case, in order to protect the electronic components intended to be inserted into the fixing device, the fixing device is preferably located in the fluid chamber defined by the inner wall of the pneumatic tyre and the wheel rim on which the pneumatic tyre is mounted.
[0027] Advantageously, when the pneumatic tyre is mounted on a transport vehicle, the fixing device is fixed in alignment with the crown (S) of the pneumatic tyre, preferably below the groove located towards the outer side of the vehicle.
[0028] For the function of measuring the deformation of the pneumatic tyre, it can be observed through the signals from various sensors of the electronic components intended to be inserted into the fixing device. More advantageously, the fixing device and thus the associated electronic components are located in a position aligned with the crown (S) of the pneumatic tyre. For example, the signals from impact sensors or accelerometers in the radial direction can detect the contact patch of the pneumatic tyre with the ground. Information related to the length of the contact patch can estimate the static load borne by the pneumatic tyre and its instantaneous rotational speed. After enhancing the adhesion force between the fixing device and the inner wall of the pneumatic tyre, by increasing the sensitivity of the sensitive sensors of the electronic components housed in the fixing device, the estimation of these parameters of the pneumatic tyre is improved qualitatively or even quantitatively.
[0029] Very advantageously, the part of the wall located closest to the inner side of the pneumatic tyre which must house the fixing device comprises an array of recessed elements and protruding elements, the recessed elements and protruding elements having a maximum height variation between 10 μm and 100 μm.
[0030] Forming a first uniform array of recessed elements and protruding elements at the outer surface of the substrate ensures a certain amount of adhesive at the interface between the outer surface of the substrate and the inner wall of the pneumatic tyre. However, in the case where the volume of the adhesive thus formed is not sufficient to ensure the mechanical strength of each adhesive pad corresponding to the recessed elements, it is conceivable to add a second uniform array of recessed elements and protruding elements at the wall of the pneumatic tyre on the basis of this individual volume. In addition, statistically, this second uniform array can form a connecting pad between two components at the protruding elements of the outer surface of the substrate, which makes the adhesive film between the two elements more uniform despite the presence of the two uniform arrays.
[0031] Preferably, the second uniform array is achieved after the step of stripping the inner wall of the outer tire aligned with the area for accommodating the fixing device. This enables optimizing the surface state of the inner wall of the outer tire before the fixing device is fixed. Additionally, advantageously, the second uniform array is not an inverted image of the first uniform array on the outer surface of the substrate. If the first uniform array is concentric, it is suitable for the second array to be a checkerboard. Similarly, if the first array is a checkerboard, it is suitable for the second uniform array to be a checkerboard where each of the two directions does not coincide with one of the directions of the first checkerboard.
[0032] Advantageously, the fixing device is fixed by cyanoacrylate and silane adhesives.
[0033] For the elastomeric material of the outer tire with a relatively airtight inner wall, these adhesives can be used because they have mechanical strength compatible with these materials to withstand the thermo-mechanical stresses that the outer tire usually undergoes during use.
[0034] The present invention also relates to an arrangement of an outer tire and a fixing device fixed to the inner wall of the outer tire, wherein an electronic component is inserted into the fixing device of the arrangement.
[0035] Preferably, the outer tire of the arrangement is mounted on a wheel, preferably in an inflated state.
[0036] This is the ultimate purpose of the fixing device, i.e., to accommodate the electronic component when the device is fixed to the inner wall of the outer tire. Specifically, the improved fixing ensured by the specific structure of the fixing device at the outer surface of the substrate ensures the signal level available on the sensor of the electronic component, so that the intrinsic information of the outer tire during operation can be obtained without being overly disturbed by the presence of the fixing device. Description of the Drawings
[0037] A better understanding of the present invention will be obtained by reading the following description given only by way of non-limiting example and with reference to the drawings (wherein the same reference numerals in the drawings denote the same parts):
[0038] ● Figure 1 A perspective view of the device for fixing an electronic component to a tire is shown;
[0039] ● Figure 2 A bottom view and a side view of the same fixing device according to the first embodiment of the present invention are shown;
[0040] ● Figure 3 A bottom view of the fixing device in the second embodiment of the present invention is shown;
[0041] ● Figure 4Shows a cross-sectional perspective view of a tire equipped with a fixing device according to the present invention. Detailed Description
[0042] Figure 1 Is a perspective view of a prior art device 10 for fixing an electronic component to a tire. In this case, the fixing device 10 is open, i.e., the electronic component is inserted into or removed from the fixing device through an orifice that remains accessible even when the fixing device 10 is fixed to the tire. Thus, the operation of inserting or removing the electronic component into or from the fixing device 10 can be carried out directly on the tire.
[0043] The fixing device 10 has a base 11, the outer surface of which functions to be fixed to the surface of the tire using a prior art technical solution known to those skilled in the art. In this case, the fixing device 10 exhibits rotational symmetry about a rotational axis perpendicular to the base 11. A 360-degree closed retaining wall 12 is connected to this base 11. The retaining wall 12 has an orifice 16 defined by the free edge 13 of the retaining wall 12 of the fixing device 10. The orifice 16 leads to an open volume 20 defined by the inner surface 14 of the base 11 and the inner surface 17 of the retaining wall 12. The orifice 16 is deformable to allow the insertion and removal of the electronic component into and from the open volume 20. The elastic properties of the material of the retaining wall 12 allow the orifice 16 to expand during the insertion and removal phases. In addition, it also ensures that when the electronic component is housed in the open volume 20, a retaining force or clamping force is exerted on the electronic component.
[0044] Figure 2 Shows an array of protruding and recessed elements on the outer surface 15 of the base 11.
[0045] This array is in the form of concentric elements around the center point of the outer surface 15 of the base 11. This forms an essentially uniform array, where the void volume is uniformly distributed both angularly and radially around this center point. The greater the number of alternations between the recessed elements 101 and the protruding elements 102, the more uniform the distribution of the grooves on the outer surface 15 of the base 11. In this case, the elements (both the protruding elements 102 and the recessed elements 101) have the same dimensions as each other in terms of width and height according to their type. To improve the uniformity of the distribution of the adhesive in the array, the width of the groove 101 can be varied according to the radial distance of the recessed element 101 from the center point.
[0046] The outer contour of the outer surface 15 of the base 11 is constituted by projections 21, the height of which is less than or equal to the maximum height 23 of the depth 22 of the protruding element 102 relative to the recessed element 101. Thus, the projections 21 constitute a barrier defining the adhesive at the outer surface 15 of the base 11. This ensures that the adhesive between the outer surface 15 of the base 11 and the inner wall of the tire does not exceed a certain volume. In addition, by controlling the amount of adhesive applied to the outer surface 15 of the base 11, the volume of the adhesive used to connect the fixing device 10 to the tire can be controlled. Depending on the type of adhesive used to fix the device to the outer tire wall and the properties required for disconnection, the depth of the recessed element 101 can be adjusted in order to obtain the correct type of disconnection in terms of position and the threshold for triggering disconnection.
[0047] Figure 3 An array of protruding and recessed elements of the outer surface 15 of the base 11 according to a second embodiment is shown.
[0048] The array is in the form of a checkerboard, consisting of alternating recessed squares 201 and protruding squares 202 of the outer surface 15 of the base 11. This forms an essentially uniform array in which the void volume is evenly distributed over the outer surface 15 of the base. In this case, the dimensions of the elements (both the protruding element 202 and the recessed element 201) are the same in terms of the peripheral dimensions. To improve the uniformity of the distribution of the adhesive in the array, the inherent size of the squares should be reduced, which ensures that the adhesive is distributed more finely at the squares. In this case, the checkerboard is obtained by passing a metal object through the outer surface 15 of the base 11 in two perpendicular directions to a significant groove depth. For smaller depths, it is conceivable to use a linear scan of a laser beam relative to the outer surface 15 to heat-treat the outer surface 15 of the base. Then, as long as two orthogonal laser scan directions are defined, an orthogonal checkerboard can be obtained. Before applying the adhesive, a step of cleaning the outer surface 15 of the base is recommended. Of course, a diamond checkerboard can be constituted instead of a rectangular checkerboard. However, preferably, the angle formed by the two directions of the checkerboard forms an angle of at least 30 degrees to ensure effective cleaning at the sharpest angle of the diamond.
[0049] The outer contour of the outer surface 15 of the base 11 is formed by the protrusions 21, the height of which is less than or equal to the maximum height 23 of the depth 22 of the protruding element 202 relative to the recessed element 201. Thus, the protrusions 21 form a barrier defining the adhesive at the outer surface 15 of the base 11. This ensures that the adhesive between the outer surface 15 of the base 11 and the inner wall of the tire does not exceed a certain volume. In addition, by controlling the amount of adhesive applied to the outer surface 15 of the base 11, the volume of the adhesive used to connect the fixing device 10 to the tire can be controlled. Depending on the type of adhesive used to fix the device to the outer tire wall and the properties required for disconnection, the depth of the recessed element 201 can be adjusted in order to obtain the correct type of disconnection in terms of position and the threshold for triggering disconnection.
[0050] Figure 4 A cross-section of a pneumatic tire 100 (which is also an outer tire) according to the present invention is shown, including a crown S, the crown S extending through two sidewalls F and terminating at two beads B. In this case, the tire 100 is intended to be mounted on a wheel (not shown in this figure), at the two beads B. This defines a closed cavity containing at least one pressurized fluid, which is jointly defined by the second radially inner surface 130 of the pneumatic tire 100 and the outer surface of the wheel. The pneumatic tire 100 also includes a first radially outer surface 140 of the pneumatic tire 100.
[0051] It should be noted that a reference axis 201 corresponding to the reference axis or natural axis of rotation of the pneumatic tire 100, and a median plane 211 perpendicular to the reference axis 201 and equidistant from the two beads B. The intersection of the reference axis 201 and the median plane 211 determines the center of the pneumatic tire 200. A Cartesian reference system is defined at the center of the pneumatic tire 200, consisting of the reference axis 201, a vertical axis 203 perpendicular to the ground, and a longitudinal axis 202 perpendicular to the other two axes. In addition, an axial plane 212 is defined, which passes through the reference axis 201 and the longitudinal axis 202, is parallel to the ground plane and perpendicular to the median plane 211. Finally, a plane that is perpendicular to both the median plane 211 and the axial plane 212 and passes through the vertical axis 203 is called a vertical plane 213.
[0052] Any particle of the pneumatic tire 100 is uniquely defined by its cylindrical coordinates (Y, R, θ). The scalar Y represents the axial distance to the center of the pneumatic tire 200 in the direction of the reference axis 201 and is defined by the orthogonal projection of the particle of the tire 100 onto the reference axis 201. A radial plane 214 is defined, which forms an angle θ with respect to the vertical plane 213 about the reference axis 201. In this radial plane 214, the particle of the pneumatic tire 100 is referenced by the distance R to the center of the pneumatic tire 200 in a direction perpendicular to the reference axis 201 and is determined by the orthogonal projection of the particle onto the radial axis 204. The unit vector perpendicular to the radial plane 214 (which forms a right-handed coordinate system (trièdredirect) with the unit vectors of the axial direction 201 and the radial direction 204) represents the circumferential direction of the outer tire 100.
[0053] The tire 100 has a fixing device 10 on its radially inner surface 130, and when the fixing device is made of an elastomeric material, the fixing device 10 is fixed to the surface 130 by adhesive bonding according to the conventional techniques of the prior art. The fixing device 10 is aligned and fixed with the crown S of the outer tire 100, which improves its durability because during the operation of mounting or dismounting the outer tire 100 onto or from a wheel, the fixing device 10 positioned in this way causes less trouble. Specifically, the fixing device 10 is located in a region remote from the bead B of the outer tire 100. In this case, the fixing device 10 is equipped with electronic components in its open volume, and the open volume constitutes a housing for receiving the electronic components. Thus, in this case, the outer tire 100 is ready to be mounted on a wheel to form a mounting assembly. The electronic components can provide various functions, such as identifying certain components (such as the electronic components themselves, the tire). However, the electronic components can also be equipped with pressure and / or temperature sensors to evaluate the inflation pressure of the mounting assembly. Finally, sensors for directly measuring the curvature of the outer tire, such as accelerometers or deflectometers, can also be equipped, so that conventional variables of the tire, such as angular velocity, mileage, and static load applied, can be derived. All these variables can determine the performance quality of the outer tire, such as, for example, wear, grip, or the inherent variables of the ground traveled by the outer tire.
Claims
1. Fixing device (10) for fixing an electronic component to the outer tire wall, said fixing device (10) comprising: - a base (11) which can be fixed to the outer tire wall by means of its outer surface (15); - a closed retaining wall (12) which can retain said electronic component, said retaining wall (12) extending from the base (11) up to a free edge (13) and, together with said base (11), defining an open volume (20); - said volume (20) which can accommodate at least a part of the electronic component, said volume (20) being defined by the inner surface of the base (11) and the retaining wall (12), having an opening (16) delimited by the free edge (13) of the retaining wall (12), said opening (16) being deformable to insert the electronic component into said volume (20) or to remove it from said volume (20); - the outer surface (15) of said base (11) which comprises a uniform array of recessed elements (101, 201) and protruding elements (102, 202), said recessed elements (101, 201) and protruding elements (102, 202) defining a maximum height variation between 10 μm and 200 μm; characterized in that the arrangement of the array of recessed elements (101) and protruding elements (102) is concentric around a single point of the outer surface (15) of the base (11) or in a checkerboard pattern, the pairs of adjacent squares of said checkerboard being recessed elements (201) and protruding elements (202).
2. The fixing device (10) according to claim 1, wherein, The width of the recessed elements (101, 201) between two protruding elements (102, 202) is between 500 μm and 1500 μm.
3. The fixing device (10) according to claim 1 or 2, wherein, The profile of the outer surface (15) of the base (11) comprises a protrusion (21), the height of said protrusion (21) being less than or equal to the maximum height (23) of the protruding elements (102, 202) of the uniform array of the outer surface (15) of the base (11).
4. The fixing device (10) according to claim 3, wherein, The width of the protrusion (21) on the profile of the outer surface (15) is less than 500 μm.
5. The fixing device (10) according to any one of claims 1 to 4, wherein, Since the arrangement of the arrays of the recessed elements (101) and the protruding elements (102) is concentric, the void volume defined by the arrays is between 30 mm 3 and 120 mm 3 in between.
6. The fixing device (10) according to claim 5, wherein, The outer surface (15) of said base (11) comprises at least 3 protruding elements (102).
7. The fixing device (10) according to any one of claims 1 to 4, wherein, Since the arrangement of the array of the recessed elements (101) and the protruding elements (102) is in a checkerboard pattern, the void volume defined by the array is between 1 mm 3 and 10 mm 3 in between.
8. Arrangement of a tyre carcass (100) and of a fixing device (10) according to any one of claims 1 to 7, the tyre carcass (100) comprising a crown (S) and two sidewalls (F), the two sidewalls (F) extending from the crown (S) and ending at two beads (B), the beads (B) being able to be connected to a wheel, wherein, Said fixing device (10) is fixed to one of the surfaces of the outer tire, preferably to the wall located closest to the inner side of the outer tire (100).
9. The arrangement according to claim 8, wherein Said fixing device (10) is fixed in alignment with the crown (S) of the outer tire (100).
10. The arrangement according to claim 8 or 9, wherein, The part of the wall located closest to the inner side of the outer tire (100) which must accommodate the fixing device (10) comprises an array of recessed elements and protruding elements, said recessed elements and protruding elements comprising a maximum height variation between 10 μm and 100 μm.
11. The arrangement according to any one of claims 8 to 10, wherein, The fixing device (10) is fixed by means of cyanoacrylate and silane adhesives.
12. The arrangement according to any one of claims 8 to 11, wherein The electronic component is inserted into the arranged fixing device (10).
13. The arrangement according to any one of claims 8 to 12, wherein, Said arranged outer tire (100) is mounted on a wheel, preferably in an inflated state.
Citation Information
Patent Citations
Device for attaching an electronic member to a pneumatic tyre
WO2018150141A1