| 摘要 |
A relatively light weight, high strength, low cost extension arm suitable for mounting an electronic device, such as a computer monitor or television, while hiding the cables to and from the device within the extension arm is provided. The extension arm comprises an arm mount, a main arm and a forearm extension. Each of these components includes at least one plate and one tube, preferably made of steel or other rigid material, connected together, preferably by welding. The components are then covered with a finishing material, such as plastic, by, for example, cast molding to provide a finished look. The main arm is rotatably and slidably connected to the arm mount and the forearm extension is rotatably connected to the main arm. Each of the tubes is hollow so that cables to and from the device can travel therethrough. Moreover, the plastic is cast mold so as to form a channel on the plates through which the cables can travel. The cables can be hidden within the channels by placing a removable channel cover over the channels. A device mount can be rotatably connected to the forearm extension.
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