Rocker arm with inboard lost motion spring over valve

A rocker arm, comprising:

• an outer arm assembly comprising:
• a pivot body formed at a first end of the rocker arm;
• a valve pallet formed at a second end of the rocker arm;
• a first outer arm and a second outer arm each extending from the pivot body to the second end of the rocker arm, the first outer arm and the second outer arm each including an integrally formed cantilevered post extending laterally outward from a central region of the rocker arm;
• a first outer roller and a second outer roller rotatably mounted on the cantilevered post of the first and second outer arms, respectively;
• and
• a first axle arranged at the second end of the rocker arm, the first axle extending from the first outer arm to the second outer arm;
• an inner arm assembly arranged within the outer arm assembly between the first outer arm and the second outer arm, the inner arm assembly comprising:
• a latch arm arranged to face the pivot body;
• a first inner arm and a second inner arm each extending from the latch arm to the first axle such that the inner arm assembly is configured to rotate relative to the outer arm assembly via the first axle;
• a spring prop extending from one or both of the first inner arm and the second inner arm;
• a second axle extending from the first inner arm to the second inner arm;
• and
• an inner roller rotatably mounted on the second axle;
• a latch mechanism arranged in the pivot body, the latch mechanism configured to switch between a latched position in which the latch mechanism extends toward and engages the latch arm, and an unlatched position in which the latch mechanism retracts from the latch arm;
• and
• a lost motion spring around the first axle, the lost motion spring biased against the spring prop and biased against the valve pallet.

A rocker arm, comprising:

• an outer arm assembly comprising:
• a pivot body formed at a first end of the rocker arm;
• a valve seat formed at a second end of the rocker arm;
• a first outer arm and a second outer arm each extending from the pivot body to the second end of the rocker arm, the first outer arm and the second outer arm each including an integrally formed cantilevered post extending laterally outward from a central region of the rocker arm;
• a first outer roller and a second outer roller rotatably mounted on the cantilevered post of the first and second outer arms, respectively;
• and
• a first axle arranged at the second end of the rocker arm, the first axle extending from the first outer arm to the second outer arm;
• an inner arm assembly arranged within the outer arm assembly between the first outer arm and the second outer arm, the inner arm assembly comprising:
• a latch arm arranged to face the pivot body;
• a first inner arm and a second inner arm each extending from the latch arm to the first axle such that the inner arm assembly is configured to rotate relative to the outer arm assembly via the first axle;
• a second axle extending from the first inner arm to the second inner arm;
• and
• an inner roller rotatably mounted on the second axle;
• a latch mechanism arranged in the pivot body, the latch mechanism configured to switch between a latched position in which the latch mechanism extends toward and engages the latch arm, and an unlatched position in which the latch mechanism retracts from the latch arm;
• and
• a lost motion spring disposed around the first axle, the lost motion spring biased against the inner arm assembly and the second end of the rocker arm,
• wherein the first axle and the second axle are parallel to each other along a common plane, and a main axis of the latch mechanism extends along the common plane or is angled toward the common plane.