# US 12,111,011 B2 · Display stand > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,011 B2 - Document ID: US12111011B2 - Status: Granted - Kind: B2 - Application number: 17/970,059 - Filed: 2022-10-20 - Published: 2023-04-20 - Granted: 2024-10-08 - Earliest claimed: 2021-10-20 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sanghoon Kim; Chunho Byun - Web page: https://patentgrep.com/patent/US12111011B2 ## CPC - F16M 11/105: {the horizontal axis being the roll axis, e.g. for creating a landscape-portrait rotation} - F16M 11/2064: {for tilting and panning (F16M11/2078 takes precedence)} - F16M 2200/022: by friction - F16M 2200/024: by positive interaction, e.g. male-female connections - F16M 2200/044: for balancing rotational movement of the undercarriage - F16M 2200/068: being part of the undercarriage - F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS ## Abstract Disclosed is a display stand including a first rotational coupling unit, and the first rotational coupling unit includes a coupling member installed in a central part of a first link and configured to pass through the first link and a second link so as to allow the first link and the second link to be rotatable in leftward and rightward directions, metal bushes installed on an outer surface of the coupling member so as to surround the coupling member and inserted into the first link so as to press the first link, and first toothed lock washers installed on the outer surface of the coupling member so as to surround the coupling member, disposed on outer surfaces of the metal bushes, and configured to have connection members provided towards an inner surface of the first link so as to be pressed against an inner surface of the second link. ## Claims ### Claim 1 A display stand, comprising: a display fixing unit; a first link coupled to the display fixing unit; a second link which is opposite to the display fixing unit with respect to the first link, and to which the first link is rotatably coupled; a first coupling member providing a rotation axis of the first link and coupled to the second link through the first link, the first coupling member including a head opposite the first link; and a first toothed lock washer which is positioned between the first link and the head of the first coupling member, and through which the first coupling member passes, wherein the first toothed lock washer is directly fixed to the second link. ### Claim 2 (depends on 1) The display stand of claim 1, wherein the first toothed lock washer comprises a connection member inserted into a mount recess formed at the second link. ### Claim 3 (depends on 1) The display stand of claim 1, further comprising a bush positioned between an outer surface of the first coupling member and an inner surface of the first link, and through which the first coupling member passes, the bush including a portion positioned between the first link and the first toothed lock washer, and wherein the head of the first coupling member is positioned on the first toothed lock washer. ### Claim 4 (depends on 1) The display stand of claim 1, wherein the first coupling member is coupled to an inner side of the second link. ### Claim 5 (depends on 4) The display stand of claim 4, wherein the first coupling member is screw-fastened to the inner side of the second link. ### Claim 6 (depends on 3) The display stand of claim 3, further comprising: a first disc spring positioned between the bush and the first toothed lock washer and through which the first coupling member passes, the first disc spring providing an elastic force in an axial direction of the first coupling member; and a space washer positioned between the bush and the first disc spring and through which the first coupling member passes. ### Claim 7 (depends on 6) The display stand of claim 6, wherein the bush comprises: an upper bush caught at one surface of the first link; and a lower bush caught at the other surface of the first link, wherein the first toothed lock washer comprises: a first upper toothed lock washer opposite the first link with respect to the upper bush; and a first lower toothed lock washer opposite the first link with respect to the lower bush, wherein the first disc spring is positioned between the upper bush and the first upper toothed lock washer, and wherein the space washer comprises: an upper space washer positioned between the upper bush and the first disc spring; and a lower space washer positioned between the lower bush and the first lower toothed lock washer. ### Claim 8 (depends on 1) The display stand of claim 1, further comprising a third link connecting the display fixing unit and the first link, wherein the display fixing unit is rotatably coupled to the third link about a rotation axis perpendicular to the display fixing unit. ### Claim 9 (depends on 8) The display stand of claim 8, further comprising: a rotating shaft passing through the display fixing unit and the third link, and providing the rotation axis of the display fixing unit with respect to the third link; a second fixing member fixed to an end of the rotating shaft; and a second disc spring positioned between the third link and the second fixing member, through which the rotating shaft rotatably passes, and providing an elastic force in an axial direction of the rotating shaft. ### Claim 10 (depends on 9) The display stand of claim 9, wherein the rotating shaft is fixed to the display fixing unit and is rotatable with respect to the third link, and the display stand further comprises: a first fixing member positioned the third link and the second disc spring, fixed to the third link, and through which the rotating shaft rotatably passes; and a rotating member positioned between the first fixing member and the second disc spring, and to which the rotating shaft is fixed. ### Claim 11 (depends on 10) The display stand of claim 10, wherein the rotating member comprises a plurality of protruding members protruding from one surface of the rotating member toward the first fixing member, wherein the first fixing member comprises: a plurality of fixing holes spaced apart from each other in a circumferential direction of the first fixing member; and a plurality of moving holes alternately arranged with the plurality of fixing holes, wherein the fixing hole has a size corresponding to the protruding member, and wherein a width of the moving hole is greater than a width of the fixing hole in the circumferential direction of the first fixing member. ### Claim 12 (depends on 8) The display stand of claim 8, wherein the display fixing unit and the third link are coupled to the first link to be rotatable about a third rotation axis, the third rotation axis perpendicular to a first rotation axis which is the rotation axis of the first link with respect to the second link and a second rotation axis which is the rotation axis of the display fixing unit with respect to the third link. ### Claim 13 (depends on 12) The display stand of claim 12, further comprising: a second coupling member passing through the third link and the first link and providing the third rotation axis; a coil spring wound around an outer circumferential surface of the second coupling member, and having one end contacting the third link and the other end contacting the first link; and a third disc spring through which the second coupling member passes, and providing an elastic force in an axial direction of the second coupling member. ### Claim 14 (depends on 1) The display stand of claim 1, wherein the second link is coupled to a display support. ### Claim 15 (depends on 1) A display device, comprising: a display; and a display stand of claim 1 to which the display is coupled.