THREE ROLLER ROCKER ARM WITH CANTILEVERED ROLLERS AND LOST MOTION SPRING OVER VALVE OR OVER ROCKER ARM PIVOT
First Claim
1. A rocker arm for a valve train, comprising:
- a main body comprising a pivot end, a valve end, a first outer side, and a second outer side;
a first post connected to the first outer side and extending away from the first outer side;
a second post connected to the second outer side and extending away from the second outer side oppositely from the first post;
a latch mechanism within the pivot end of the main body, the latch mechanism comprising a latch finger configured to selectively move between a latched position, wherein the latch finger extends towards the valve end, and an unlatched position, wherein the latch finger withdraws away from the valve end, the latch finger comprising a latch surface;
an inner arm assembly pivoting from the valve end between the first outer side and the second outer side, the inner arm assembly comprising a latch arm pivotable from a position above the latch surface to a position below the latch finger;
a first roller connected to rotate on the first post;
a second roller connected to rotate on the second post; and
at least one biasing mechanism biasing the latch arm towards the position above the latch surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A rocker arm, comprises a first outer arm comprising a first inner side and a first outer side, the first outer side comprising a first cantilevered post. A first outer roller is mounted to the first cantilevered post. A second outer arm comprises a second inner side and a second outer side, the second inner side facing the first inner side, the second outer side comprising a second cantilevered post. A second outer roller is mounted to the second cantilevered post. A pivot body joins the first inner side to the second inner side. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm, the latch arm pivotable adjacent the pivot body. A pivot axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm.
11 Citations
40 Claims
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1. A rocker arm for a valve train, comprising:
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a main body comprising a pivot end, a valve end, a first outer side, and a second outer side; a first post connected to the first outer side and extending away from the first outer side; a second post connected to the second outer side and extending away from the second outer side oppositely from the first post; a latch mechanism within the pivot end of the main body, the latch mechanism comprising a latch finger configured to selectively move between a latched position, wherein the latch finger extends towards the valve end, and an unlatched position, wherein the latch finger withdraws away from the valve end, the latch finger comprising a latch surface; an inner arm assembly pivoting from the valve end between the first outer side and the second outer side, the inner arm assembly comprising a latch arm pivotable from a position above the latch surface to a position below the latch finger; a first roller connected to rotate on the first post; a second roller connected to rotate on the second post; and at least one biasing mechanism biasing the latch arm towards the position above the latch surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A valvetrain, comprising:
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rocker arm for a valve train, comprising; a main body comprising a pivot end, a valve end, a first outer side, and a second outer side; a first post connected to the first outer side and extending away from the first outer side; a second post connected to the second outer side and extending away from the second outer side oppositely from the first post; a latch mechanism within the pivot end of the main body, the latch mechanism comprising a latch finger configured to selectively move between a latched position, wherein the latch finger extends towards the valve end, and an unlatched position, wherein the latch finger withdraws away from the valve end, the latch finger comprising a latch surface; an inner arm assembly pivoting from the valve end between the first outer side and the second outer side, the inner arm assembly comprising a latch arm pivotable from a position above the latch surface to a position below the latch finger, the inner arm assembly comprising a bearing axle and an inner roller rotatable on the bearing axle; a first roller connected to rotate on the first post; a second roller connected to rotate on the second post; and at least one biasing mechanism biasing the latch arm towards the position above the latch surface; and a set of three rotating cam lobes respectively configured to press upon each of the first roller, the second roller, and the inner roller, wherein the at least one biasing mechanism biases the inner roller towards the set of rotating cam lobes.
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15. A valvetrain, comprising:
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a rocker arm for a valve train, comprising; a main body comprising a pivot end, a valve end, a first outer side, and a second outer side; a first post connected to the first outer side and extending away from the first outer side; a second post connected to the second outer side and extending away from the second outer side oppositely from the first post; a latch mechanism within the pivot end of the main body, the latch mechanism comprising a latch finger configured to selectively move between a latched position, wherein the latch finger extends towards the valve end, and an unlatched position, wherein the latch finger withdraws away from the valve end, the latch finger comprising a latch surface; an inner arm assembly pivoting from the valve end between the first outer side and the second outer side, the inner arm assembly comprising a latch arm pivotable from a position above the latch surface to a position below the latch finger, the inner arm assembly comprising a bearing axle and an inner roller rotatable on the bearing axle; a first roller connected to rotate on the first post; a second roller connected to rotate on the second post; and at least one biasing mechanism biasing the latch arm towards the position above the latch surface; and first, second, and third rotating cam lobes respectively configured to press upon each of the first roller, the second roller, and the inner roller, wherein the third rotating cam lobe is configured to selectively push the latch arm to rotate past the latch finger when the latch finger is in the unlatched position. - View Dependent Claims (16)
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17. A rocker arm, comprising:
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a first outer arm comprising a first inner side and a first outer side, the first outer side comprising a first cantilevered post; a first outer roller mounted to the first cantilevered post; a second outer arm comprising a second inner side and a second outer side, the second inner side facing the first inner side, the second outer side comprising a second cantilevered post; a second outer roller mounted to the second cantilevered post; a pivot body joining the first inner side to the second inner side; an actuatable latch mechanism within the pivot body; an inner arm assembly comprising a latch arm, the latch arm pivotable adjacent the pivot body; and a pivot axle joining the inner arm assembly to pivot between the first outer arm and the second outer arm. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A type II valvetrain, comprising:
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a rocker arm, comprising; an outer arm assembly, comprising; a first outer arm comprising a first inner side and a first outer side, the first outer side comprising a first cantilevered post; a first outer roller mounted to the first cantilevered post; a second outer arm comprising a second inner side and a second outer side, the second inner side facing the first inner side, the second outer side comprising a second cantilevered post; a second outer roller mounted to the second cantilevered post; a pivot body joining the first inner side to the second inner side; and an actuatable latch mechanism within the pivot body; an inner arm assembly comprising a latch arm, the latch arm pivotable adjacent the pivot body; a pivot axle joining the inner arm assembly to pivot between the first outer arm and the second outer arm; and a biasing mechanism biased between the outer arm assembly and the inner arm assembly; and first, second, and third rotating cam lobes, where the first cam lobe is configured to press upon the first outer arm, where the second cam lobe is configured to press upon the second outer arm, and wherein the third cam lobe is configured to selectively push the latch arm to rotate past the actuatable latch mechanism when the actuatable latch mechanism is in an unlatched position, and wherein the biasing mechanism provides a spring force to bias the inner arm assembly towards the third cam lobe.
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40. (canceled)
Specification