# US 12,173,545 B2 · Door opening device and storage equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,173,545 B2 - Document ID: US12173545B2 - Status: Granted - Kind: B2 - Application number: 18/000,664 - Filed: 2021-12-29 - Published: 2024-07-11 - Granted: 2024-12-24 - Earliest claimed: 2021-06-18 - Assignees: Hefei Midea Refrigerator Co., Ltd.; Hefei Hualing Co., Ltd.; Midea Group Co., Ltd. - Applicants: Hefei Midea Refrigerator Co., Ltd.; Hefei Hualing Co., Ltd.; Midea Group Co., Ltd. - Inventors: Tao Zheng; Yang Li; Yingjie Ma - Web page: https://patentgrep.com/patent/US12173545B2 ## CPC - E05F 15/60: using electrical actuators - E05Y 2201/426: for the initial opening movement - E05Y 2201/462: Electromagnets - E05Y 2201/474: Compression springs - E05Y 2201/686: Rods, links - E05Y 2400/41: for multiple motors - E05Y 2600/10: Adjustable - E05Y 2600/61: Threaded members - E05Y 2600/624: Nuts - E05Y 2800/21: of identical elements, e.g. of identical compression springs - E05Y 2800/242: arranged in parallel relationship - E05Y 2900/20: for furniture, e.g. cabinets - E05Y 2900/31: for refrigerators - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract The present application relates to the field of storage equipment and provides a door opening device and storage equipment. The door opening device includes a plurality of electromagnetic push rod structures, where each of the plurality of electromagnetic push rod structures includes a push rod; and a controller electrically connected to the plurality of electromagnetic push rod structures and is configured to drive a plurality of push rods of the plurality of electromagnetic push rod structures to act synchronously. The door opening device according to the present application can reduce the thickness of the door opening device to a large extent under the condition of ensuring the pushing force through synchronous action of the plurality of electromagnetic push rod structures arranged in parallel, which is helpful to improve the application range of the door opening device. ## Claims ### Claim 1 A door opening device, comprising: a plurality of electromagnetic push rod structures, wherein each of the plurality of electromagnetic push rod structures comprises a push rod; an output joint, wherein each of the push rods is connected to the output joint, wherein at least one of the push rods is connected to the output joint in a position-adjustable manner along a moving direction of the at least one push rod; and a controller, electrically connected to the plurality of electromagnetic push rod structures and configured to drive push rods of the plurality of electromagnetic push rod structures to act synchronously. ### Claim 2 (depends on 1) The door opening device of claim 1, wherein at least one of the push rods includes a threaded portion which passes through the output joint, and the threaded portion is connected to the output joint in a position-adjustable manner through nuts on both sides of the output joint. ### Claim 3 (depends on 1) The door opening device of claim 1, wherein at least one of the push rods comprises an adjusting portion which passes through the output joint, the adjusting portion comprises a positioning surface extending along a moving direction of the push rod, the output joint is provided with a positioning hole in communication with the positioning surface, the adjusting portion is connected to the output joint in an adjustable manner through a positioning member, and the positioning member passes through the positioning hole and abuts against the positioning surface. ### Claim 4 (depends on 1) The door opening device of claim 1, wherein the output joint comprises: a connecting rod, connected to the plurality of push rods; and an output rod, connected to the connecting rod, wherein at least a portion of the output rod protrudes towards a direction away from the push rods relative to the connecting rod. ### Claim 5 (depends on 4) The door opening device of claim 4, wherein the output joint further comprises: a buffer head, provided at a working end of the output rod. ### Claim 6 (depends on 4) The door opening device of claim 4, wherein the connecting rod is provided with a connecting hole, a tail end of each push rod is provided with a stepped connecting shaft, and the stepped connecting shaft penetrates through the connecting hole and is connected to the connecting rod. ### Claim 7 (depends on 1) The door opening device of claim 1, further comprising: a base, provided with a mounting position for mounting the door opening device, wherein the plurality of electromagnetic push rod structures are mounted on the base. ### Claim 8 (depends on 7) The door opening device of claim 7, further comprising: a connecting rib, connected to the plurality of electromagnetic push rod structures and the base. ### Claim 9 A storage equipment, comprising: a door opening device including: a plurality of electromagnetic push rod structures, wherein each of the plurality of electromagnetic push rod structures comprises a push rod; an output joint, each of the push rods being connected to the output joint, wherein at least one of the push rods includes a threaded portion which passes through the output joint, and the threaded portion is connected to the output joint in a position-adjustable manner through nuts on both sides of the output joint; and a controller, electrically connected to the plurality of electromagnetic push rod structures and configured to drive push rods of the plurality of electromagnetic push rod structures to act synchronously. ### Claim 10 (depends on 9) The storage equipment of claim 9, wherein at least one of the push rods is connected to the output joint in a position-adjustable manner along a moving direction of the push rod. ### Claim 11 (depends on 9) The storage equipment of claim 9, wherein at least one of the push rods comprises an adjusting portion which passes through the output joint, the adjusting portion comprises a positioning surface extending along a moving direction of the push rod, the output joint is provided with a positioning hole in communication with the positioning surface, the adjusting portion is connected to the output joint in an adjustable manner through a positioning member, and the positioning member passes through the positioning hole and abuts against the positioning surface. ### Claim 12 (depends on 9) The storage equipment of claim 9, wherein the output joint comprises: a connecting rod, connected to the plurality of push rods; and an output rod, connected to the connecting rod, wherein at least a portion of the output rod protrudes towards a direction away from the push rods relative to the connecting rod. ### Claim 13 (depends on 12) The storage equipment of claim 12, wherein the connecting rod is provided with a connecting hole, a tail end of each push rod is provided with a stepped connecting shaft, and the stepped connecting shaft penetrates through the connecting hole and is connected to the connecting rod. ### Claim 14 (depends on 13) The storage equipment of claim 13, wherein the door opening device further comprises a base, the base including a mounting position for mounting the door opening device, wherein the plurality of electromagnetic push rod structures are mounted on the base. ### Claim 15 A door opening device, comprising: a plurality of electromagnetic push rod structures, wherein each of the plurality of electromagnetic push rod structures comprises a push rod; an output joint, wherein each of the push rods is connected to the output joint; and a controller, electrically connected to the plurality of electromagnetic push rod structures and configured to drive push rods of the plurality of electromagnetic push rod structures to act synchronously, wherein at least one of the push rods comprises an adjusting portion which passes through the output joint, the adjusting portion comprises a positioning surface extending along a moving direction of the push rod, the output joint is provided with a positioning hole in communication with the positioning surface, the adjusting portion is connected to the output joint in an adjustable manner through a positioning member, and the positioning member passes through the positioning hole and abuts against the positioning surface. ### Claim 16 A storage equipment, comprising: a door opening device including: a plurality of electromagnetic push rod structures, wherein each of the plurality of electromagnetic push rod structures comprises a push rod; an output joint, each of the push rods being connected to the output joint, and a controller, electrically connected to the plurality of electromagnetic push rod structures and configured to drive push rods of the plurality of electromagnetic push rod structures to act synchronously, wherein the output joint comprises: a connecting rod, connected to the plurality of push rods; and an output rod, connected to the connecting rod, wherein at least a portion of the output rod protrudes towards a direction away from the push rods relative to the connecting rod; and wherein the connecting rod is provided with a connecting hole, a tail end of each push rod is provided with a stepped connecting shaft, and the stepped connecting shaft penetrates through the connecting hole and is connected to the connecting rod.