Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
  • B60C23/02—Signalling devices actuated by tyre pressure
  • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
  • B60C23/02—Signalling devices actuated by tyre pressure
  • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
  • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
  • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
  • B60C23/0433—Radio signals
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
  • B60C23/02—Signalling devices actuated by tyre pressure
  • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
  • B60C23/0491—Constructional details of means for attaching the control device
  • B60C23/0493—Constructional details of means for attaching the control device for attachment on the tyre

Definitions

• the present invention relates to devices for attaching to a pneumatic casing of an electronic component for the purpose of conveying identification information on the pneumatic casing or physical parameters of the pneumatic casing measured by the electronic component during the life of the pneumatic casing.
• One of the most commonly used device designs is a patch having a sole serving to attach to the pneumatic casing and provided with a wall closed on itself extending from the sole to an opening.
• the wall serves to grip or hold the electronic member in position within the device, the electronic member being mounted tightly inside the wall which deforms elastically.
• the opening allows the insertion and extraction of the electronic component of the patch thanks to the elasticity of the material of the opening
• Document W02018/150141A1 illustrates a patch of this nature.
• this patch specifically presents a tightening system in order to limit the opening, it is in all respects consistent with a patch for attaching to a pneumatic envelope of an electronic object.
• this type of patch sometimes presents a problem with the mechanical strength of the system comprising the patch and the electronic organ during use of the pneumatic envelope on which this system is fixed.
• the forces generated at the level of the patch and the electronic component due to the change in radius of curvature at the moment when the sector of the pneumatic envelope where the patch is fixed enters or exits from the contact area are important.
• the invention relates to an electronic system comprising an electronic member and a device for retaining the electronic member capable of being fixed to a wall of a pneumatic envelope, said retaining device comprising:
• said volume capable of accommodating at least a part of said electronic member, being defined by an internal surface of said sole and by an internal surface of said retaining wall, presenting an opening delimited by the free edge of said retaining wall, suitable to deform to introduce said electronic organ into said volume;
• said electronic member comprising a protective housing defining an external surface circumscribed in a cylinder whose axis of revolution is perpendicular to the median plane of the external surface of the sole of said retaining device and delimited by two parallel planes; and characterized in that the free edge of the retaining wall extends radially towards the axis of revolution of the cylinder circumscribed to the exterior surface of the protective housing from a closed line of the distal holding wall of the sole along the axis of revolution whose points have a tangent vector which has a principal component along the radial direction of the cylindrical mark associated with the cylinder, in that the radial extension of the retaining wall to each point of the free edge takes place over a distance between 25% and 35% of the radial distance of the
• Such a fixing device makes it possible to respond to the technical problem posed since the dimension of the radial extension is controlled, which ensures a certain level of bending and thus ensures control of the deformation of the opening of the patch which does not allow easy ejection of the electronic organ from the fixing device.
• the dimensioning of the radial extension also controls the dimension of the opening delimited by the free edge, which forces the electronic member to remain inside the open volume.
• the presence and dimensioning of the cliff on the protective casing of the electronic organ limits the deformation of the retaining wall which then forces the electronic organ to remain inside the open volume of the fixing device.
• the extraction of the electronic member remains possible via an external tool which first enlarges the opening of the retaining wall by applying a uniform specific force over the entire free edge to reduce the radial extension of the retaining wall.
• a uniform specific force over the entire free edge to reduce the radial extension of the retaining wall.
• the first cliff tangent s the projection of the free edge of the retaining wall onto the exterior surface along the axis of revolution over at least a third of the entire curvilinear length of the projection of the free edge onto the surface exterior.
• the first cliff tangents the projection of the free edge of the retaining wall onto the exterior surface following axis of revolution over at least half of the entire curvilinear length of the projection of the free edge onto the exterior surface .
• the first cliff tangents the projection of the free edge of the retaining wall onto the exterior surface along the axis of revolution over the entire curvilinear length of the projection of the free edge onto the exterior surface.
• the electronic component comprising the following elements:
• the electronic component here comprises a radio frequency transponder, that is to say it comprises radio frequency communication components in transmission/reception to capture an order and respond to this order.
• the radio frequency transponder is active, that is to say it includes an energy source used mainly to transmit the response by radio frequency communication. Indeed, radio frequency transmission is an energy-intensive functionality for large responses, such as, for example, the transmission of measurement or calculation data.
• the microprocessor has more or less sophisticated calculation capabilities for processing measurement data coming from a measurement sensor, for example connected to the microprocessor.
• the energy source which can be for example a battery can be bulky but also heavy, which leads to significant centrifugal forces and significant shock forces which can be the cause of untimely ejection. of the electronic organ of the fixing device.
• the invention also relates to an arrangement of an electronic system and a pneumatic casing capable of rotating around an axis of rotation, said pneumatic casing comprising a vertex (S), two sides (F) extending from the top (S) and ending in two beads (B) capable of being linked to a wheel, in which the electronic system is fixed via the external surface of the sole of the retaining device on the one of the surfaces of the pneumatic casing, preferably on the radially inner surface of the pneumatic casing.
• the electronic system is fixed on the radially interior surface of the pneumatic casing and to the right of the vertex (S) of the pneumatic casing.
• This arrangement is the final destination of the electronic system which is the first object of the invention. Since the electronic system includes an electronic component, this electronic component cannot be installed within the raw blank of the pneumatic casing. Indeed, the electronic component would not support the thermo-mechanical constraints associated with the manufacturing process of a pneumatic envelope. Usually, it is preferable to install the electronic system after manufacturing the tire. As a result, this electronic system is positioned on one of the surfaces, which are by nature external, of the pneumatic envelope. Preferably, the electronic system is positioned on the surface radial em ent interior of the pneumatic casing relative to the natural axis of rotation of the pneumatic casing.
• the electronic component is protected, in the condition of use on the pneumatic casing, by the rubber structure of the pneumatic casing, which improves the mechanical endurance of the electronic component.
• the positioning to the right of the summit allows easy access to measurement characteristics via a sensor of the electronic organ associated with the contact area, which makes it possible to go back to the usage characteristics of the pneumatic such as the static load applied, the driving speed.
• the pneumatic casing being able to rotate around the axis of rotation in a main direction corresponding to a direction of movement relative to a ground of a vehicle equipped with said arrangement in forward motion, the barycenter of the points of the first cliff of the protective housing of the electronic organ tangenting the projection of the free edge of the retaining wall on the exterior surface is positioned behind the axis of revolution of the cylinder circumscribed to the protective housing of the electronic organ following the direction of movement of the vehicle when the electronic system is located entirely in an angular sector of the pneumatic envelope in contact with the ground.
• the orientation of the electronic system in the pneumatic envelope when it is positioned to the right of the top (S) of the pneumatic envelope is an influential factor in the non-ejection of the electronic organ, particularly at very high speed.
• Driving at high and very high speed on a vehicle is carried out in forward motion of the vehicle.
• the median plane of the part of the first cliff, tangenting the projection of the free edge of the retaining wall on the exterior surface, delimiting the angular sector of the part of the first cliff into two equal angular sectors in the cylindrical mark associated with the cylinder circumscribed to the protective casing of the organ, has its normal having a main component according to the axis of rotation of the pneumatic envelope, preferably its normal is collinear with the axis of rotation of the pneumatic envelope.
• Fig. 1 presents a perspective view of an electronic component, capable of being attached to a tire via a retaining device, of the state of the art
• Fig. 2 presents a sectional view of the radial plane of the electronic system according to one embodiment of the invention
• Fig. 3 shows a top view of the electronic system for the same embodiment of the invention, that is to say from the side of the opening of the cavity of the retaining device;
• Fig. 4 shows a perspective and sectional view of a pneumatic casing equipped with an electronic system according to the invention. Detailed description of embodiments
• Fig. 1 is a perspective view of an electronic member 10, capable of being fixed using a retaining device to a pneumatic envelope, of the state of the art.
• the electronic component 10, shown here in gray, is delimited by a protective housing 12 encapsulating all of the electronic components of the electronic component 10.
• This protective housing 12 has an exterior surface 30 circumscribed by a cylinder 17 having an axis of revolution 15 which is perpendicular to the printed circuit of the electronic member 10.
• This cylinder 17, having an axis of revolution 15, is truncated by two parallel planes 16 and 16' which rest respectively on the surfaces axially exteriors 14 and 14' of the protective box 12.
• This protective box 12 appears as the combination of a cone and a parallelepiped.
• the conical shape makes it easy to insert or remove from a retainer.
• the cone has on one of its axially exterior surfaces a parallelepiped which accommodates the radio antenna. This is also encapsulated in the protective housing 12.
• the protective housing 12 is a monolithic part or a part assembled in several parts, the parts then being welded together.
• the parts or the monolithic part are obtained for example using a molding process from a plastic material such as a thermosetting material.
• the low temperature cooking of the plastic results in the final creation of the exterior surface 30 of the protective casing 12.
• Fig. 2 is a sectional view of the radial plane of an electronic system 1000 according to one embodiment of the invention.
• the electronic system 1000 consists of an electronic member 10 and a retaining device 510 intended to be fixed to the wall of a pneumatic envelope.
• the retaining device 510 comprises a sole 511 capable of attaching to the wall of a pneumatic casing via an external surface and a closed retaining wall 512 whose function is to retain said electronic member 10.
• the retaining wall 512 extends from the sole 511 to a free edge 513 thus defining with the sole 511 a volume 520.
• This volume 520 is open thus allowing the insertion and extraction of the organ electronic 10 within the volume 520.
• the volume 520 is delimited by the internal surface 515 of the retaining wall 512 and the internal surface 514 of the sole 511.
• the opening 516 of the volume 520 is delimited by the free edge 513 of the retaining wall 512. This opening 516 is able to deform to allow the insertion and extraction of the electronic member 10 within the volume 520.
• the electronic component 10 comprises a protective box 12 encapsulating all of the electronic components.
• This protective housing 12 defines an external surface 30.
• This external surface 30 is circumscribed in a cylinder whose axis of revolution 15 is perpendicular to the median plane of the external surface of the sole 511.
• the circumscribed cylinder is truncated by two parallel planes the first of which is similar to the internal surface 514 of the sole 511 and the second plane is located axially externally to the opening 516 of the retaining device 510.
• the retaining wall 512 extending axially from the sole 511 to the free edge 513.
• the part of the retaining wall 512 comprising the free edge 513 has a predominantly radial rather than axial extension in order to constitute a lip of retained for the electronic member 10.
• One of the ends of the lip is the free edge 513.
• the other end 530 is a closed line whose points present a vector tangent to the closed line having a majority component in the radial direction relative to the axis of revolution 15.
• the radial extension of the lip thus formed extends from the closed line 530 to the free edge 513 over a distance r of between 25% and 35% of the radial distance rsso of the closed line 530 relative to the axis of revolution 15.
• the radial length of the lip contributes to maintaining the electronic member 10 within the retaining device during driving at high speeds when the system 1000 is fixed to the wall of a pneumatic envelope. However, this radial length is in association with another characteristic of the electronic system to fully ensure this maintenance function.
• the protective housing 12 here has a cliff 50 extending externally to the volume 520 of the retaining device 510.
• This cliff 50 has its main component which extends in the direction of the axis of revolution 15
• the axial extension “h” of the cliff is greater than twice the thickness “e” of the retaining wall 512 at the level of the free edge 513.
• This distance condition of the axial extension of the cliff 50 guarantees a. positioning of the electronic member 10 relative to the opening 516 of the retaining device, which ensures better retention of the electronic member 10 within the retaining device 510.
• this cliff 50 must be located partly in the immediate vicinity of the free edge 513 of the lip defined by the retaining wall 512.
• the positioning of the electronic member 10 within the retaining device 510 is even more constrained at least for movement in a direction perpendicular to the line of tangency in an axial plane.
• the tangency between the cliff 50 and the projection 517 of the free edge 513 on the external surface 30 should be carried out on an angular sector around the axis of revolution 15.
• the tangency is ensured over 180 degrees which constrains the relative movement of the electronic member 10 within the retaining device 510 over half of the possible movements.
• a sector of 120 degrees is desirable to prevent cornering situations with possibly optimized positioning of the electronic system 1000 within the tire.
• FIG. 3 is a top view of the electronic system 1000 of FIG. 2. That is to say externally to the electronic system 1000, we observe it towards the side of the opening of the volume of the retaining device 510 in the axial direction.
• the local vector U of the electronic system of FIG. 3 corresponds to the direction vector of the circumferential direction of the cylindrical marker associated with the tire around its natural axis of rotation.
• the part of the cliff 50 tangenting the free edge 513 of the retaining wall is located behind the axis of revolution 15 of the electronic system 1000 when the tire rolls on the roadway in the "walk" mode. front” of the vehicle.
• Fig. 4 shows a section of a pneumatic tire 100, which is also a pneumatic envelope, according to the invention comprising a vertex S extended by two sidewalls F and ending in two beads B.
• the tire 100 is intended to be mounted on a wheel which is not shown in this figure, at the level of the two beads B.
• a closed cavity is thus delimited, containing at least one fluid under pressure, delimited both by the second radially interior surface 130 of the tire pneumatic 100 and by the external surface of the wheel.
• the pneumatic tire 100 also comprises a first surface 140 radially external to the pneumatic tire 100.
• reference axis 201 corresponding to the reference axis or natural axis of rotation of the tire 100 and the median plane 211, perpendicular to the reference axis 201 and equidistant from the two beads B. intersection of the reference axis 201 by the median plane 211 determines the center of the tire 200.
• a Cartesian reference mark at the center of the tire 200 consisting of the reference axis 201, a vertical axis 203 perpendicular to the ground and a longitudinal axis 202 perpendicular to the two other axes.
• Any material point of the tire 100 is uniquely defined by its cylindrical coordinates (Y, R, 9).
• the scalar Y represents the axial distance from the center of the tire 200 in the direction of reference axis 201 defined by the orthogonal projection of the material point of the tire 100 on reference axis 201.
• the material point of the tire 100 is identified in this radial plane 214 by the distance R to the center of the tire 200 in the direction perpendicular to reference axis 201 identified by the orthogonal projection of this material point on radial axis 204.
• the unit vector perpendicular to the radial plane 214 and forming a direct trihedron with the unit vectors of the axial 201 and radial 204 directions represents the circumferential direction of the pneumatic envelope 100.
• Fig.4 the presence of an arrow 300 carried by longitudinal axis 202 indicating the direction of movement of the tire 100 when it is mounted on a vehicle and the vehicle is traveling forward.
• This tire 100 has on the radially inner surface 130 a retaining device 510 which is fixed to the surface 130 by gluing according to the usual techniques of the state of the art when the retaining device 510 is made of elastomeric material.
• the retaining device 510 is fixed to the right of the vertex S of the pneumatic casing 100, which improves its endurance since the retaining device 510 thus positioned provides less worry during the operations of mounting or dismounting the wheel on the casing tire 100.
• the retaining device 510 is located in a zone remote from the beads B of the pneumatic envelope 100.
• the retaining device 510 is equipped with an electronic member 10 at within its open volume which constitutes a housing adapted to receive the electronic member 10.
• the pneumatic envelope 100 is here ready to be mounted on a wheel to constitute a mounted assembly.
• the electronic component 10 can deliver various functions such as the identification of certain components such as the electronic component itself, the tire. But the electronic component can also be equipped with a pressure and/or temperature sensor in order to evaluate the inflation pressure of the assembled assembly. Finally, it can also be equipped with a sensor directly measuring the curvature of the tire casing such as an accelerometer or a flexometer making it possible to trace quantities of use of the tire such as angular speed, mileage traveled, static load applied. All of these quantities make it possible to identify the performances of the pneumatic casing such as, for example, its wear, its grip or intrinsic quantities of the ground on which the pneumatic casing rolls.
• the electronic components of the electronic organ 10 are encapsulated in a protective box.
• This protective box has a cliff which extends above the retaining device 510.
• the cliff tangents the free edge of the retaining wall of the retaining device 510 over its entirety. The free edge delimiting the opening of the retaining device 510 through which the electronic member 10 is inserted or extracted from the receiving volume of the retaining device 510.
• the barycenter of the points of the line of tangency between the cliff of the electronic member 10 and the free edge of the retaining device 510 is located on the axis of revolution of the electronic member 10, which corresponds to a particular case where the part of the cliff tangent with the free edge is located behind the axis of revolution of the electronic organ.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Tires In General (AREA)
• Connection Of Plates (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=85685336

Family Applications (1)

Country Status (6)

Family Cites Families (6)

• 2022
  • 2022-12-14 FR FR2213309A patent/FR3143428B1/fr active Active
• 2023
  • 2023-11-20 CN CN202380086446.8A patent/CN120457036A/zh active Pending
  • 2023-11-20 JP JP2025534645A patent/JP2026503391A/ja active Pending
  • 2023-11-20 WO PCT/EP2023/082394 patent/WO2024125965A1/fr not_active Ceased
  • 2023-11-20 KR KR1020257019659A patent/KR20250120296A/ko active Pending
  • 2023-11-20 EP EP23810305.5A patent/EP4633976A1/de active Pending

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