Rocker arm support mechanism

Abstract

A rocker arm support mechanism includes a holding member (3), a rocker arm shaft (6) and a nut (31). The holding member (3) has a base wall fastened to an end surface of a cylinder head, and a pair of support walls (3a) each provided with a hole (28). The rocker arm shaft (6) includes an eccentric sleeve (15) having a bore (20) and a circumference (15a) eccentric to the bore (20), and a support shaft (14) passed through the hole (28) of one of the side walls (3a), the bore (20) of the eccentric sleeve (15) and the hole (28) of the other side wall (3a). The support shaft (14) is inserted in the bore (20) of the eccentric sleeve (15) and the eccentric sleeve (15) is restrained from turning relative to the support shaft (14). A rocker arm (5) is put on the eccentric sleeve (15) for turning on the eccentric sleeve (15), the eccentric sleeve (15) is turned about the axis of the support shaft (14) relative to the holding member (3) to adjust the height of the rocker arm (5) from the end surface of the cylinder head. The rocker arm (5) and the holder (3) are formed by plate work. The support shaft (14) and the eccentric sleeve (15) are manufactured separately. The support shaft (14) has a head (14a) and a threaded part (14b). The nut (31) is screwed on the threaded part (14b) of the support shaft (14) to fasten the rocker arm shaft (6) to the support walls (3a).

Dependencies are inferred from the claim text.