Steering assembly and method

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 3/12 (2006.01) B62D 5/22 (2006.01) F16H 55/28 (2006.01) F16H 57/12 (2006.01)

Patent

CA 2157740

A steering assembly (10) for use in turning steerable vehicle wheels includes a rack (12) and a pinion (14). A yoke (28) is continuously pressed against the rack (12) by a yoke spring (32). The yoke (28) has a stem (62) which extends through an opening (64) in a housing (16). During construction of the steering assembly (10), a desired range of transverse movement between the rack (112) and the pinion (14) is obtained by applying force (114) to the rack to position the rack at a first end of the range of transverse movement. The direction of the force applied to the rack (12) is then reversed and the rack and yoke (28) are moved together away from the reference position until the yoke stem (62) has moved through the desired range of transverse movement. A yoke plug (20) is then fixed against movement relative to a main housing section (18). After the rack and pinion steering assembly (10) has been constructed, it may be desired to check the range of transverse movement between the rack (12) and pinion (14). The distance between opposite ends of the range of transverse movement is determined by determining the distance through which the stem (62) on the yoke (28) moves relative to the housing (16).

Ensemble de direction (10) servant à orienter les roues d'un véhicule. L'ensemble comprend une crémaillère coulissante (12) et un pignon (14). Une chape (28) est maintenue contre la crémaillère (12) au moyen d'un ressort (32), et la chape (28) est dotée d'une tige (62) passant par l'ouverture (64) d'un boîtier (16). Pendant la fabrication de l'ensemble de direction (10), on détermine l'amplitude de déplacement transversal souhaitée entre la crémaillère (12) et le pignon (14) en appliquant une force (114) donnée sur la crémaillère pour la placer au premier pôle d'amplitude de déplacement transversal. Le sens dans lequel la force est exercée sur la crémaillère (12) est ensuite inversé, et la crémaillère et la chape (28) sont déplacées ensemble par rapport au point de référence jusqu'à ce que la tige de la chape (62) ait franchi toute l'amplitude de déplacement transversal déterminée. Un élément de blocage (20) est ensuite placé pour empêcher la chape de bouger par rapport à une partie principale du boîtier (18). Après la fabrication de la direction à pignon et à crémaillère (10), il est opportun de vérifier l'amplitude du mouvement transversal entre la crémaillère (12) et le pignon (14). La distance entre les deux pôles d'amplitude de déplacement transversal est établie en déterminant la distance à effectuer par la tige (62) de la chape (28) par rapport au boîtier (16).

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