Wheel arrangement having a pressure sensor

Details Wheel arrangement having a pressure sensor Wheel arrangement having a pressure sensor

B - Operations, Transporting

60

C

B60C 23/04 (2006.01)

Patent

CA 2448087

The invention relates to a wheel arrangement (10) comprising a wheel (14) having a sensor (60) for measuring pressure in the tyre; a spindle,(12) whereby said wheel is rotatably mounted with the aid of bearings (22) around said spindle, and means (70) of communication between the sensor (60) and means (86) for using measures, which are associated with said spindle. Said communication means (70) are adapted to a transmission system with a frequency higher than 50 kHz comprising a rotating antenna (74) which is supported by the wheel (14) and a fixed antenna. The two antennae (74,78) do not have their own rotational guiding means The antennae (74,78) are generally annular and disposed in a concentric manner on the same level around the wheel (14) axis (X-X) of rotation, the average radial distance between the antennae (74,78) exceeding 2mm.

L'ensemble à roue (10) comporte: une roue (14) portant un capteur (60) de mesure de la pression dans le pneumatique; une fusée (12) autour de laquelle la roue (14) est montée rotative par l'intermédiaire de paliers (22); et des moyens (70) de communication entre le capteur (60) et des moyens (86), associés à la fusée, d'exploitation des mesures. Lesdits moyens de communication (70) sont adaptés pour une transmission à une fréquence supérieure à 50 kHz et comportent une antenne tournante (74) portée par la roue (14) et une antenne fixe (78). Les deux antennes (74, 78) sont dépourvues de moyens propres de guidage en rotation. Les antennes (74, 78) sont généralement annulaires et disposées, dans un même plan, de manière concentrique, autour de l'axe (X-X) de rotation de la roue (14), l'écartement radial moyen entre les antennes (74, 78) étant supérieur à 2 mm.

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