Rocker arm assembly

F - Mech Eng,Light,Heat,Weapons – 01 – L

Patent

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Details

F01L 1/18 (2006.01)

Patent

CA 2168109

Two support arms of a bearing support member (12) extend in opposite directions, each support arm (28, 30) having an overlying bearing cup (36) engageable with a rocker arm (10). A bearing sleeve (32) is mounted over each support arm (28, 30) between the respective bearing cup and the bearing support member (12) to provide an inner raceway. Each bearing sleeve has sufficient radial clearance with respect to the respective support arm (28, 30) such that the bearing sleeve (32) precesses with oscillation of the rocker arm (10). Rolling members within an annulus formed between the bearing support member (12) and each bearing cup allow the rocker arm (10) to freely oscillate rotatably with respect to the bearing support member (12). A bearing assembly for mounting within a rocker arm (10) is also disclosed.

Selon l'invention, deux bras d'un élément de support de roulement (12) s'étendent dans des directions opposées, chaque bras de support (28, 30) étant recouvert d'une coupelle de roulement (36) dans laquelle peut être engagé un basculeur (10). Une douille de roulement (32) est montée sur chaque bras de support (28, 30) entre sa cuvette de roulement et son élément de support de roulement (12) respectifs pour former un chemin de roulement intérieur. Chaque douille de roulement (32) est suffisamment espacée radialement par rapport aux bras de support respectifs (28, 30) pour qu'elle effectue une précession lors de l'oscillation du culbuteur (10). Des corps de roulement situés dans l'espace annulaire formé entre l'élément de support de roulement (12) et chaque coupelle de roulement permettent au culbuteur (10) d'osciller librement, de façon rotative, par rapport à l'élément de support de roulement (12). Un ensemble roulement destiné à être monté dans un culbuteur (10) est également décrit.

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