# US 12,000,647 B2 · Refrigerator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,647 B2 - Document ID: US12000647B2 - Status: Granted - Kind: B2 - Application number: 17/639,842 - Filed: 2020-07-31 - Published: 2022-10-13 - Granted: 2024-06-04 - Earliest claimed: 2019-09-03 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jung-il Shin; Sang-hoon Lee - Web page: https://patentgrep.com/patent/US12000647B2 ## CPC - F25D 25/024: {Slidable shelves} - F25D 25/027: {Rotatable shelves} - F25D 25/04: by conveyors (in general B65G) - F25D 2325/021: Shelves with several possible configurations - F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B) ## Abstract The present disclosure relates to a refrigerator provided with a shelf system in which a shelf located at a high position can be withdrawn to a front lower side so that food can be easily stored or taken out. The shelf system constituting the refrigerator according to the present disclosure includes a shelf on which food is placed, a frame which supports the shelf and is detachably attached to a main body of the refrigerator; multiple links provided on one side of the shelf and configured to support the shelf such that the shelf moves forward/backward or upward/downward or is rotatable; and a guide hole which is formed in the frame and controls a trajectory along which at least one link of the multiple links moves, wherein a rotation center shaft of at least one link of the multiple links moves when the shelf moves. ## Claims ### Claim 1 A refrigerator comprising: a main body having at least one storage space defined therein; a door mounted rotatably to a front surface of the main body and configured to shield the storage space defined inside the main body; a shelf provided inside the main body and configured to store food; and a shelf system that movably supports the shelf, wherein the shelf system is configured to, during withdrawal of the shelf, enable the shelf to move forward and downward while the shelf being rotated downward by the shelf system, wherein the shelf system comprises: a frame that supports the shelf and is detachably attached to the main body, and multiple links disposed at one side of the shelf and configured to support the shelf, wherein the multiple links enable the shelf to move forward and backward relative to the frame, to move upward and downward relative to the frame, or to rotate relative to the frame, wherein the frame defines a plurality of guide holes that define a trajectory of movement of at least one link of the multiple links, the plurality of guide holes comprising a first guide hole, a second guide hole, and a shaft guide hole, and wherein a front-to-rear length of each of the first guide hole and the shaft guide hole is shorter than a front-to-rear length of the second guide hole. ### Claim 2 (depends on 1) The refrigerator of claim 1, wherein a rotation center shaft of a link among the multiple links that supports the shelf is configured to move during a movement of the shelf. ### Claim 3 (depends on 1) The refrigerator of claim 1, wherein a rotation center shaft of at least one link of the multiple links is configured to move based on the shelf moving along at least one of the plurality of guide holes. ### Claim 4 (depends on 3) The refrigerator of claim 3, further comprising: a damper provided at a side of the frame and connected rotatably to any one of the multiple links at an end of the damper, the damper being configured to facilitate rotation of the shelf and providing a locking function. ### Claim 5 (depends on 4) The refrigerator of claim 4, wherein the multiple links comprise: a front link connected rotatably to a front part of the shelf at an end thereof; a rear link connected rotatably to a rear end part of the shelf at an end thereof; and a connection link connected rotatably to the rear link and the front link at opposite ends thereof. ### Claim 6 (depends on 5) The refrigerator of claim 5, wherein: the first guide hole controls forward/backward and upward/downward movements of the connection link; the second guide hole controls forward/backward and upward/downward movements of the rear link; and the shaft guide hole controls the forward/backward and upward/downward movements of the connection link and the rear link. ### Claim 7 (depends on 6) The refrigerator of claim 6, wherein the multiple links further comprise: a first connection shaft that is provided at a front end of the connection link and that rotatably connects the front link and the connection link to each other; and a second connection shaft that is provided at a rear end of the connection link and that rotatably connects the rear link and the connection link to each other. ### Claim 8 (depends on 7) The refrigerator of claim 7, wherein the damper is connected rotatably to the rear link at a first end thereof, and is connected rotatably to the frame at a second end thereof. ### Claim 9 (depends on 8) The refrigerator of claim 8, wherein a damper connection end is provided on the first end of the damper such that the damper is connected rotatably to the rear link, the damper connection end comprising a connection part connected rotatably to the damper at an end thereof, and a fixed part configured to be integrated with the connection part and fixed to the rear link. ### Claim 10 (depends on 9) The refrigerator of claim 9, wherein the shelf is configured to: based on being received in the main body, define an acute angle between the connection part and a longitudinal direction of the damper; and based on being withdrawn toward a front side of the refrigerator, define a rear angle between the connection part and the longitudinal direction of the damper, the rear angle being less than a front angle defined between the connection part and the longitudinal direction of the damper. ### Claim 11 (depends on 1) The refrigerator of claim 1, wherein the plurality of guide holes are defined at different heights of the frame, and wherein the second guide hole is defined above the first guide hole and the shaft guide hole, and the shaft guide hole is defined between the first guide hole and the second guide hole. ### Claim 12 (depends on 11) The refrigerator of claim 11, wherein a front end portion of each of the plurality of guide holes is curved downward. ### Claim 13 (depends on 11) The refrigerator of claim 11, wherein the first guide hole is defined forward relative to the shaft guide hole. ### Claim 14 (depends on 11) The refrigerator of claim 11, wherein the second guide hole extends forward relative to the shaft guide hole. ### Claim 15 (depends on 11) The refrigerator of claim 11, wherein the second guide hole extends rearward relative to the shaft guide hole. ### Claim 16 (depends on 11) The refrigerator of claim 11, wherein a rear end of the second guide hole disposed rearward relative to rear ends of the first guide hole and the shaft guide hole, and wherein the rear end of the first guide hole is disposed forward relative to a front end of the shaft guide hole.