Rocker arm assembly with improved latch pin assembly
AssigneeEaton Intelligent Power Limited
InventorANDREI RADULESCU
Life of this patent
Estimating the term…
Abstract
A rocker arm assembly including a cam side rocker arm portion configured to selectively rotate about a pivot location. A latch pin assembly is provided for selectively latching and deactivating rotation of the cam side rocker arm portion relative to the valve side rocker arm portion about the pivot location. The latch pin assembly includes a latch pin moveable within a cam side bore and a valve side bore. The latch pin includes an outer peripheral surface having a first portion and a second portion. The first portion has a first diameter that is less than a second diameter of the second portion. At least one of the outer peripheral surface of the latch pin or inner surfaces of the cam side bore and the valve side bore is frustoconical-shaped.
Claims29
A rocker arm assembly comprising:
- a cam side rocker arm portion configured to selectively rotate about a pivot axis, the cam side rocker arm portion including an inner surface defining a cam side bore;
- a valve side rocker arm portion configured to rotate about the pivot axis relative to the cam side rocker arm portion, the valve side rocker arm portion including an inner surface defining a valve side bore;
- and
- a latch pin assembly for selectively latching and unlatching the cam side rocker arm portion relative to the valve side rocker arm portion, the latch pin assembly comprising:
- a latch pin moveable within the cam side bore and the valve side bore, the latch pin comprising an outer surface,
- wherein at least one of the outer surface of the latch pin, the inner surface of the cam side bore, and the inner surface of the valve side bore is frustoconical-shaped.
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A rocker arm assembly comprising:
- a cam side rocker arm portion configured to selectively rotate about a pivot axis, the cam side rocker arm portion include a cam side bore;
- a valve side rocker arm portion and configured to rotate about the pivot axis relative to the cam side rocker arm portion, the valve side rocker arm portion including a valve side bore;
- and
- a latch pin assembly for selectively latching and unlatching the cam side rocker arm portion relative to the valve side rocker arm portion, the latch pin assembly comprising:
- a latch pin moveable within the cam side bore and the valve side bore, the latch pin having a first portion and a second portion,
- wherein both the first portion and the second portion are frustoconical-shaped.
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A rocker arm assembly comprising:
- a cam side rocker arm portion configured to selectively rotate about a pivot axis, the cam side rocker arm portion comprising a cam end configured to receive a lift profile from a cam lobe, the cam side rocker arm portion including a cam side bore;
- a valve side rocker arm portion coupled to the cam side rocker arm portion and configured to rotate about the pivot axis relative to the cam side rocker arm portion, the valve side rocker arm portion including a valve side bore;
- and
- a latch pin assembly for selectively latching and unlatching the cam side rocker arm portion relative to the valve side rocker arm portion about the pivot axis, the latch pin assembly comprising:
- a latch pin moveable within the cam side bore and the valve side bore, the latch pin comprising a main portion and a reduced portion,
- wherein inner surfaces of the cam side bore and the valve side bore are frustoconical-shaped.
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Dependencies are inferred from the claim text.