US 5,797,666 AGranted

Desk with liftable monitor case

OwnerKwang-soo Parkinventor

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Abstract

A desk selectively used as a reading or computer desk is disclosed. The desk has a liftable monitor case that is movably received in the desk and selectively moves in vertical direction between monitor visible and nonvisible positions. In order to vertically move the above monitor case between the two positions, the desk according to an embodiment has an automatic case lifting device including a motor-driven pantographic link work. In the case lifting device, a movable nut along with a contact bracket engages with the output shaft of a reversible motor and horizontally reciprocates along the shaft by the rotating force of the shaft. The contact bracket horizontally moves between two positions where the bracket comes into contact with limit switches, respectively, to stop the motor. The reversible motor starts to extend or retract the link work when the keyboard drawer is fully drawn out or closed.

Claims5

Dependent claims

A desk comprising:

a monitor case compartment defined in said desk and opening outside a top panel of said desk through an opening formed on said top panel, said compartment being provided with a pair of guide rails vertically extending on both side walls thereof, respectively;
a liftable monitor case received in said compartment to vertically move between monitor-visible and nonvisible positions, each side wall of said case having a guide groove engaging with an associated guide rail of said compartment to guide said case while the case vertically moves relative to the compartment;
means for selectively lifting said monitor case relative to the compartment;
and
means for automatically starting said monitor case lifting means to vertically move said monitor case between the monitor-visible and nonvisible positions, wherein said starting means includes:
a contact provided on a keyboard drawer in said desk;
third and fourth limit switches provided in a drawer-receiving cavity inside the desk, said third or fourth limit switch being selectively brought into contact with said contact of the drawer in fully-drawn or fully-retracting position, thus starting said monitor case lifting means in either direction.

4 more elements

Dependencies are inferred from the claim text.