Rocker with switchable rollers for engine valvetrains

An engine valvetrain system comprising:

• a camshaft comprising a plurality of cams;
• a plurality of valves;
• a rocker arm assembly configured to rotate about a rocker shaft, the rocker arm assembly comprising:
• a rocker arm body;
• a first roller assembly pivotably connected to the rocker arm body, the first roller assembly including a first roller configured to rotate about a first roller axis and to engage a first cam of the plurality of cams;
• a second roller assembly pivotally connected to the rocker arm body, the second roller assembly including a second roller configured to rotate about a second roller axis and to engage a second cam;
• and
• a latching mechanism configured to selectively decouple one of the first roller assembly or the second roller assembly from the rocker arm body, the latching mechanism comprising:
• rocker body pins comprising a first end pin, a second end pin, and a connection pin disposed between the first and second end pins, each of the rocker body pins slidably disposed at least partially within the rocker arm body along a latching axis;
• and
• roller body pins comprising a first locking pin and a second locking pin, the first locking pin disposed between the first end pin and the connection pin, the second locking pin disposed between the connection pin and the second end pin, the first locking pin slidably disposed at least partially within the first roller assembly along the first roller axis, and the second locking pin slidably disposed at least partially within the second roller assembly along the second roller axis,
• wherein, when a first latching mode is enabled such that the first roller assembly is deactivated and the second roller assembly is activated, the rocker body pins and the roller body pins are slidably displaced toward the second end pin, and
• wherein, when a second latching mode is enabled such that the second roller assembly is deactivated and the first roller assembly is activated, the rocker body pins and the roller body pins are slidably displaced toward the first end pin.