Adjustable extension arm device
AssigneeModernsolid Industrial Co., Ltd.
InventorChin-Jui HUNG
Life of this patent
Estimating the term…
Abstract
An adjustable extension arm device includes an extension arm unit, a joint unit pivotally connected to the extension arm unit, an extension and retraction unit disposed in the extension arm unit, and an adjusting unit for adjusting the extension and retraction unit. A proximal endcap of the joint unit defines therein an accommodation chamber having a viewing opening. The adjusting unit has a driving carrier connected with the extension and retraction unit, and an adjusting threaded shaft rotatably mounted to the proximal endcap and threadedly engaged with the driving carrier to make a linear movement of the driving carrier relative to the viewing opening. A pointing unit is connected to and moved with the driving carrier to point out the load capacity of the extension and retraction unit during adjustment.
Claims10
An adjustable extension arm device comprising:
- an extension arm unit including a first arm segment and a second arm segment which is coupled with said first arm segment to cooperatively define a channel therebetween, each of said first and second arm segments having proximal and distal ends;
- a joint unit including a proximal endcap which is pivotally connected with said proximal ends of said first and second arm segments, and a distal endcap which is pivotally connected with said distal ends of said first and second arm segments, said proximal endcap defining therein an accommodation chamber which extends in an axial direction to terminate at an access opening that faces said channel and a viewing opening that faces away from said channel;
- an extension and retraction unit disposed in said channel, and having a stationary portion which is pivotally connected to said first arm segment, and a movable portion which is pivotally connected to said second arm segment and extendable and retractable relative to said stationary portion;
- an adjusting unit including an adjusting threaded shaft which is rotatably mounted to said proximal endcap, and a driving carrier which is disposed in said accommodation chamber, connected with said movable portion of said extension and retraction unit, and threadedly engaged with said adjusting threaded shaft to make a linear movement along with the rotation of said adjusting threaded shaft relative to said viewing opening between an upper position, where said driving carrier is proximal to said first arm segment, and a lower position, where said driving carrier is proximal to said second arm segment;
- and
- a pointing unit having a connected end which is disposed adjacent to said access opening and connected to said driving carrier, and extending from said connected end along an axis in the axial direction to have a pointing end that is disposed adjacent to said viewing opening.
Dependencies are inferred from the claim text.