| 主权项 |
1. A support arm for supporting an electronic device, the support arm comprising:
a base portion that is adapted to support the support arm from a mounting surface; a lower arm portion comprising a parallelogram portion, the parallelogram portion comprising an upper channel, a lower channel, a lower endcap, and an upper endcap, wherein a first end of the upper channel and a first end of the lower channel are each rotatably attached to the lower endcap and a second end of the upper channel and a second end of the lower channel are each rotatably attached to the upper endcap; a tilter assembly, the tilter assembly comprising a tilter body, a cylinder, and a center tilt mount that is rotatably attached to the tilter body via the cylinder, the center tilt mount being adapted to support the electronic device therefrom; and at least one friction joint, the at least one friction joint comprising:
a bushing comprising a main portion having an exterior surface, an interior surface, and an outer circumference, the bushing further comprising a first tab, a second tab, and a split located between the first and second tabs, wherein at least one of the first tab and second tab extends at least partially exterior to the outer circumference of the main portion of the bushing;a friction cylinder comprising an exterior surface and at least one portion that fixedly engages with a separate component of the support arm;an opening for accommodating the bushing and friction cylinder therein;a threaded passage that intersects with the opening; anda threaded member that is extendable through the threaded passage and into the opening,
the bushing being located within the opening such that the exterior surface of the main portion of the bushing engages the opening, the friction cylinder being located within the opening and routed internal to the bushing such that the exterior surface of the friction cylinder engages the interior surface of the main portion of the bushing, the friction cylinder being rotatable along with the separate component of the support arm within the opening, the threaded member being extendable into the opening such that the threaded member makes contact with one of the first tab and the second tab of the bushing, wherein the at least one friction joint is located within at least one of the lower endcap, upper endcap, and tilter assembly, wherein if the at least one friction joint is located within either of the lower endcap and upper endcap, the separate component is at least one of the upper channel and lower channel, and wherein if the at least one friction joint is located within the tilter assembly, the opening and threaded passage are located in the tilter body, the cylinder corresponds with the friction cylinder, and the separate component is the center tilt mount. |
