Shim for valve drive mechanism, and valve drive mechanism
AssigneeOtics Corporation
InventorsKazunori Kawahara, Masateru Kishi
Life of this patent
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Abstract
The present invention provides a shim for a valve drive mechanism which is interposed between a pad surface of a rocker arm and a stem end surface of a valve. The shim includes a ship top surface that is contacted by the pad surface. The shim top surface is rotated about a center thereof to be cut, is provided with a center hole at the center thereof, and is shaped such that the pad surface does not contact an intersection line between an inner peripheral surface of the center hole and the shim top surface when the rocker arm is swung.
Claims12
A shim for a valve drive mechanism, which is interposed between a pad surface of a rocker arm and a stem end surface of a valve, the shim comprising:
- a shim top surface that is contacted by the pad surface, wherein
- the shim top surface is rotated about a center thereof to be cut,
- the shim top surface is provided with a center hole at the center thereof, and
- the shim top surface is shaped such that the pad surface does not contact an intersection line between an inner peripheral surface of the center hole and the shim top surface when the rocker arm is swung.
A valve drive mechanism comprising:
- a rocker arm having a crowned pad surface;
- and
- a shim that is interposed between the crowned pad surface of the rocker arm and a stem end surface of a valve and that has a shim top surface that is contacted by the crowned pad surface, wherein
- the shim top surface is rotated about a center thereof to be cut,
- the shim top surface is provided with a center hole at a center thereof, and
- the shim top surface is shaped such that the crowned pad surface does not contact an intersection line between an inner peripheral surface of the center hole and the shim top surface when the rocker arm is swung.
Dependencies are inferred from the claim text.