LINKAGE APPARATUS HAVING A LOW PROFILE ASYMMETRICAL HEAD

摘要

A high-cycle, short range-of-motion linkage apparatus is provided for actuating a positioning device. The linkage apparatus includes a pivot member having a head portion configured to receive by plastic deformation a bearing assembly therein. The head portion defines a bore therein having a substantially cylindrical inner surface that defines an inner diameter having a first center point. The head portion further defines a truncated arcuate outer surface, a portion of which defines a radius of curvature and a second center point. A stem having a central axis extends from the pivot member along the central axis in a first direction. The second center point is offset from the first center point in the first direction and a distance between the first center point and the second center point, measured along the central axis, is in the range of up to about 33% of the radius of curvature.

主权项

1. A linkage apparatus for actuation of a positioning device, the linkage apparatus comprising:
a pivot member having a head portion configured to receive by plastic deformation a bearing assembly therein, the head portion defining a bore therein having a substantially cylindrical inner surface that defines an inner diameter having a first center point, the head portion further defining a truncated arcuate outer surface, a portion of which defines a radius of curvature and a second center point; a stem having a central axis, the stem extending from the pivot member along the central axis in a first direction; and the second center point is offset from the first center point in the first direction and a distance between the first center point and the second center point, measured along the central axis, is up to about 33% of the radius of curvature.