Power component and instrumented tyre

1. An instrumented tyre for a vehicle wheel, the tyre comprising:

a wall; and

an object attached to the wall at a given location,

wherein the object is held in suspension in a soft substance,

wherein the object is attached to the wall via the soft substance,

wherein the soft substance has a deformability under stress that is greater than a deformability under stress of a material forming the wall at the given location,

wherein the soft substance has a secant modulus of elasticity in extension of less than 0.3 MPa at 10% deformation and at ambient temperature, and

wherein the soft substance is elastically deformable such that the soft substance deforms from an initial shape to a stressed shape when under stress, and the soft substance returns to the initial shape when the stress is removed.

2. The instrumented tyre according to claim 1 , wherein a modulus of rigidity of the material forming the wall at the given location is at least ten times higher than a modulus of rigidity of the soft substance.

3. The instrumented tyre according to claim 1 , wherein the object is suspended in the soft substance such that the object is entirely encapsulated by the soft substance.

4. The instrumented tyre according to claim 1 , wherein the soft substance has a secant modulus of elasticity in extension of 0.05 MPa at 10% deformation and at ambient temperature.

5. The instrumented tyre according to claim 1 , wherein the soft substance has a dynamic shear modulus of less than 50,000 Pa at ambient temperature.

6. The instrumented tyre according to claim 1 , wherein the soft substance has a dynamic shear modulus of less than 50,000 Pa in a temperature range of between −40° C. and 100° C.

7. The instrumented tyre according to claim 1 , wherein the soft substance has a Shore A hardness of less than 5.

8. The instrumented tyre according to claim 1 , wherein the soft substance is a material chosen from any of:

thermoplastic elastomer gels,

thermosetting elastomer gels, and

polymeric colloidal solutions.

9. The instrumented tyre according to claim 1 , wherein the soft substance is a silicone-based thermosetting elastomer gel.

10. The instrumented tyre according to claim 1 , further comprising an outer protective casing for the object, the casing being made of a rubbery material compatible with materials of a tyre.

11. The instrumented tyre according to claim 10 , wherein the outer protective casing is arranged to be attached to an inner face or an outer face of the wall.

12. The instrumented tyre according to claim 10 , wherein the outer protective casing is arranged so that the object can be placed in a pocket fitted in the wall.

13. The instrumented tyre according to claim 1 , wherein the soft substance is a viscous fluid.

14. The instrumented tyre according to claim 1 , wherein the object is mechanically bound to a protective casing.

15. The instrumented tyre according to claim 1 , wherein the object is a passive radiofrequency identification transponder equipped with two antennas forming a dipole.