| 摘要 |
The present invention relates to a display extension unit. The display extension unit includes a fixed body, a link portion having one end coupled to the fixed body; a movable body coupled to the other end of the link portion, and a driving part coupled to the joining point of the link portion, where the driving part includes a motor unit and a rotary part coupled to the driving shaft of the motor unit, with the rotary part including a clutch coupled to the driving shaft and a driven shaft positioned in contact with the clutch, and where the driving force of the motor unit is smaller than the frictional force between the driven shaft and the clutch.
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