Cam shaft positioning structure of engine
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorYuichi Kawamoto
Life of this patent
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Abstract
Disclosed is a cam shaft positioning structure of an engine. In the cam shaft positioning structure, a groove 51 is provided in a rocker case 50, for accommodating a flange portion 31 of the cam shaft 20. In the state in which the rocker case 50 is not mounted on the cylinder head 40, the cam shaft 20 is axially displaceable with respect to the cylinder head 40 from a normal position. In the state in which the cam shaft 20 is securely retained between the cylinder head 40 and the rocker case 50, the axial displacement of the flange portion 31 is restricted by the groove 51. Therefore, the cam shaft 20 is axially positioned with respect to the cylinder head 40 so as to be placed at the normal position.
Claims3
A cam shaft positioning structure of an engine comprising:
- a cylinder head provided with one part of a bearing;
- a rocker case provided with the other part of the bearing;
- and a cam shaft rotatably supported by the bearing formed by mounting the rocker case on the cylinder head, and being applied to a single over head cam type engine, wherein
- the cam shaft is provided with a flange portion,
- the rocker case is provided with a groove for accommodating the flange portion, and wherein
- in a first state in which the rocker case is mounted on the cylinder head and the cam shaft is securely retained between the cylinder head and the rocker case, the groove is adapted to restrict axial displacement of the flange portion to allow the cam shaft to be axially positioned with respect to the cylinder head so as to be placed at a normal position, and
- in a second state in which the cam shaft is placed on the cylinder head and the rocker case is not mounted on the cylinder head, the cam shaft is able to be axially displaceable with respect to the cylinder head from the normal position.
Dependencies are inferred from the claim text.