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US 9,752,670 B2Granted
Mechanical system forming a cam follower or a rocker arm
AssigneeAktiebolaget Skf
InventorsNicolas Berruet, François Champalou, Samuel Viault
Life of this patent
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Abstract
A mechanical system, forming a cam follower or a rocker arm, and comprising a support element, a pin extending between two opposite ends along a first axis and supported by the support element, and a roller movable in rotation relative to the pin around the first axis and adapted to roll on a cam. The support element includes at least a first part and a second separate part which, when fitted together, together delimit a lubricating groove on an external surface of the support element.
Claims13
A mechanical system, forming one of a cam follower or a rocker arm, the mechanical system comprising:
- a support element centered on a longitudinal axis;
- a pin extending between two opposite ends along a first axis and supported by the support element;
- and
- a roller movable in rotation relative to the pin around the first axis and adapted to roll on a cam,
- wherein the support element comprises at least a first part and a second separate part which, when fitted together, together delimit a lubricating groove on an external surface of the support element,
- wherein the second separate part comprises a lower portion and an upper portion, the lower portion has a hollow cylindrical shape comprising a first outer diameter, the upper portion has a hollow cylindrical shape comprising a second outer diameter wherein the first outer diameter is greater than the second outer diameter, the upper portion and the lower portion being connected by a connecting portion,
- the first part comprising a first part upper portion and a first part lower portion that each have a cylindrical shape, the first part upper portion comprises a first outer cylindrical surface having a third outer diameter and the first part lower portion comprises a second outer cylindrical surface having a fourth outer diameter and an inner cylindrical surface having an inner diameter, wherein the third outer diameter is greater than the fourth outer diameter, a shoulder connects the first outer cylindrical surface to the second outer cylindrical surface, the inner diameter of the inner cylindrical surface of the first part lower portion is substantially equal to the second outer diameter of the upper portion such that the upper portion of the second separate part engages the inner cylindrical surface of the first part lower portion to secure the second separate part to the first part such that the upper portion of the second separate part and the first part lower portion overlap each other with respect to the longitudinal axis of the support element, and
- wherein the lubricating groove is delimited by the connecting portion, the first part lower portion, and the shoulder.
5 more elements
Dependencies are inferred from the claim text.