Hydraulic slider coupling

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 35/00 (2006.01) B60K 17/35 (2006.01)

Patent

CA 2102611

A hydraulic ball coupling assembly (1) comprises an inner hub (2) and an outer hub (3) disposed for relative coaxial rotational engagement. The inner hub (2) includes a continuous sinuate recessed track (4) extending circumferentially around the cylindrical outer surface (5). The outer hub (3) includes a plurality of uniformly spaced axially extending grooves (6) on the inner cylindrical surface (7). The grooves (6) extend in a direction substantially normal to the general effective direction of the sinuate track (4). A slider (10) is reciprocally disposed within each groove (6) and located in the intersecting region (11) of the sinuate track (4) and the respective groove (6) such that relative rotation of the inner and outer hubs (2, 3) causes each slider (10) to oscillate axially within its respective groove (6) while traversing the track (4). The grooves (6) and track (4) contain a hydraulic fluid of suitable viscosity to provide fluid resistance to the oscillation of the sliders (10) and thereby permit transmission of torque between the inner and outer hubs (2, 3).

Un ensemble d'accouplement hydraulique à rotule (1) comprend un moyeu (2) et un tambour (3) disposés de façon à être solidaires et à tourner dans un même axe. Le moyeu (2) comprend, sur tout le pourtour de sa surface cylindrique extérieure (5), une gorge sinueuse et continue (4). Le tambour (3) comprend, sur sa surface cylindrique intérieure (7), une pluralité de cannelures (6) uniformément espacées et disposées dans l'axe longitudinal. Les cannelures (6) sont dans une direction essentiellement perpendiculaire par rapport à la direction générale de la gorge sinueuse (4). Un curseur (10) est disposé en sens inverse à l'intérieur de chaque cannelure (6), dans la région où les cannelures (6) croisent la gorge sinueuse (4), de façon que la rotation du moyeu (2) par rapport au tambour (3) fait osciller chaque curseur (10) axialement à l'intérieur de sa cannelure (6) à l'endroit où il croise la gorge (4). Les cannelures (6) et la gorge (4) contiennent un fluide hydraulique d'une viscosité telle qu'il résiste à l'oscillation des curseurs (10) et permet ainsi la transmission du couple entre le moyeu et le tambour (2,3).

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