Monitoring Device For Tyres For Vehicle Wheels, Tyre For Vehicle Wheels Provided With Said Monitoring Device, And Method For Installing An Electronic Unit In Said Tyre

Abstract

A monitoring device for tyres for vehicle wheels comprising: an electronic unit (20); a connecting member (30) configured for constraining said electronic unit (20) to a tyre (1 ), said connecting member (30) comprising: a first and a second base portion (31, 32), mutually separated by a separated region (33), each of said base portions (31, 32) having a respective base surface (31 a, 32a) associable with an inner surface (2) of a tyre (1 ); a housing portion (34) associated with said base portions (31, 32) defining, in cooperation with said base portions (31, 32), a cavity (35) for housing said electronic unit (20),wherein said housing portion (34) comprises at least one side structure (34a), configured for exerting a containing action at least relative to movements of said electronic unit (20) carried out in a major extension direction (X) of said separation region (33) and with respect to movements of said electronic unit (20) carried out in a direction orthogonal to the major extension direction (X) of said separation region (33) wherein said cavity (35) is confined at least by a side surface (351 ) defined by an inner surface (340) of said side structure (34), wherein said electronic unit (20) comprises at least one sensor (21 ), at least one antenna (22) and a holding body (26); for housing at least said sensor (21 ) and said antenna (22), wherein said holding body (26) has at least one side surface (261 ), wherein, when said electronic unit (20) is inserted in said cavity (35): the side surface (261 ) of the holding body (26) faces the side surface (351 ) of the cavity (35), and the sizes of said cavity (35) and of said holding body (26) are such as to form at least one first gap (100) at least partly separating the side surface (261) of the holding body (26) and the side surface (351) of the cavity (35). Also described are a tyre (1 ) provided with said monitoring device (10) and a method for installing an electronic unit (20) in a tyre (1 ).

Description

technical field [0001] The invention relates to a monitoring device for wheel tires. [0002] The invention also relates to a wheel tire provided with the monitoring device. [0003] The invention also relates to a method for mounting an electronic unit in a tire. Background technique [0004] As customer and / or national directives / regulations require improved vehicle safety, the need to monitor the operational status of tires in real time and possibly track the temporal evolution of parameters representative of this operation is increasingly important. [0005] Parameters that are generally considered and / or kept under control can be, for example, temperature, pressure, and distance (and / or revolutions) traveled by the tire, loads acting on the tire, and The parameters of the mathematical processing performed on the signal detected by the sensor. [0006] Parameters can also be used to identify the specific state the tire and / or vehicle is in, such as a worn state, hydro...

AI Technical Summary

Problems solved by technology

[0012] However, the applicant has found that this connection can lead to stress concentrations and / or deformations due to the high stresses to which the tire is subjected during use and the coupling between the curved element and the rigid element (electronic unit) during rolling (the tyre), And in turn cause fatigue and / or progressive wear of the connecting member, especially when the connecting member is associated with the inner surface of the tire at the crown portion of the tire (eg, at the equatorial plane of the tire)

[0013] The Applicant has thus found that the stress concentrations resulting from mechanical interference between the electronic unit and the walls of the cavity housing said electronic unit can lead to premature failure of the connecting member and to the occurrence of the electronic unit being no longer constrained to the tire. A situation where the inner surface, instead, moves uncontrollably inside the tire, which has a noticeable negative effect on the functioning and integrity of the electronic unit itself

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