US 12,404,785 B2
Switching rocker arm having stamped inner arm configuration
Alessio Lorenzon, Avigliana (IT); and Egidio Canzoniere, Matera (IT)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Oct. 5, 2022, as Appl. No. 17/960,473.
Application 17/960,473 is a continuation of application No. PCT/EP2021/025127, filed on Apr. 6, 2021.
Claims priority of provisional application 63/005,768, filed on Apr. 6, 2020.
Prior Publication US 2023/0024930 A1, Jan. 26, 2023
Int. Cl. F01L 1/18 (2006.01); F01L 1/46 (2006.01); F01L 13/00 (2006.01)
CPC F01L 1/18 (2013.01) [F01L 1/462 (2013.01); F01L 13/0005 (2013.01); F01L 2001/186 (2013.01); F01L 2303/00 (2020.05); F01L 2305/00 (2020.05); F01L 2305/02 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A switching roller finger follower (SRFF) assembly for valve actuation, the SRFF assembly comprising:
an outer arm;
an inner arm pivotally coupled to the outer arm via a pivot axle and at least partially disposed within the outer arm, the inner arm being unitarily formed and having a first inner side arm and a second inner side arm, the first inner side arm and the second inner side arm proximate to a first end of the inner arm being bent toward each other such that a first spacing between the first and second inner side arms proximate to the first end is less than a second spacing between the first and second inner side arms proximate to a second end of the inner arm;
a spring engagement pin extending through pin apertures formed in the first and second inner side arms proximate to the first end of the inner arm;
a pair of lost motion springs supported by the pivot axle;
an inner roller rotatably coupled to the inner arm;
a pair of outer rollers disposed on respective axles supported by the outer arm;
a latch assembly configured to selectively latch the inner arm to the outer arm to prevent relative movement therebetween, wherein the latch assembly comprises a latch pin slidingly received within a latch bore formed in the outer arm, wherein the outer arm includes a hydraulic port fluidly coupled to the latch bore, and
wherein said first spacing is defined by respective inner surfaces of the first and second inner side arms being offset from each other by a predetermined distance such that said respective inner surfaces do not contact each other.