# US 2024/0201751 A1 · Double-shaft hinge implemented with flexible display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0201751 A1 - Document ID: US20240201751A1 - Status: Published application - Kind: A1 - Application number: 18/083,108 - Filed: 2022-12-16 - Published: 2024-06-20 - Earliest claimed: 2022-12-16 - Assignees: Sinher Technology Inc. - Applicants: Sinher Technology Inc. - Inventors: Feng-Yu CHUNG; Chih-Huang PENG; Nan-Hai LAI - Web page: https://patentgrep.com/patent/US20240201751A1 ## CPC - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - E05D 3/12: with two parallel pins and one arm - E05D 11/06: Devices for limiting the opening movement of hinges - E05Y 2999/00: Subject-matter not otherwise provided for in this subclass - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - 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 invention provides a double-shaft hinge implemented with a flexible display. The double-shaft hinge includes a first shaft, a second shaft parallel to the first shaft and a shaft mounting base. The first shaft is provided with a first wheel. A first notch is formed in a periphery of the first wheel. The second shaft is provided with a second wheel. A second notch is formed in a periphery of the second wheel. Two supporting blocks are arranged at one side of the shaft mounting base facing the first wheel and the second wheel. An equal armed lever is mounted on the two supporting blocks. The equal armed lever takes the two supporting blocks as moving fulcrums. The equal armed lever selectively falls into the first notch or the second notch to switch between rotating the first shaft and rotating the second shaft. ## Claims ### Claim 1 A double-shaft hinge, implemented with a flexible display, comprising: a first shaft, comprising a first wheel, wherein a first notch is formed in a periphery of the first wheel; a second shaft, parallel to the first shaft and comprising a second wheel, wherein a second notch is formed in a periphery of the second wheel; and a shaft mounting base, comprising two mounting holes provided for installing the first shaft and the second shaft therein respectively, two supporting blocks arranged in parallel at a surface of the shaft mounting base facing the first wheel and the second wheel and located between the two mounting holes, and an equal armed lever mounted on the two supporting blocks, wherein the two supporting blocks act as fulcrum of the equal armed lever, the equal armed lever comprises a first end pushed by the periphery of the first wheel, and a second end opposite to the first end and pushed by the periphery of the second wheel, when the first end is engaged with the first notch, the first shaft is restricted from rotating, when the second end is engaged with the second notch, the second shaft is restricted from rotating, the first end and the second end do not engage with both of the first notch and the second notch at the same time, and only one of the first end and the second end is engaged with the first notch or the second notch at a time. ### Claim 2 (depends on 1) The double-shaft hinge according to claim 1, wherein the shaft mounting base comprises a mounting groove accommodating the equal armed lever, and the two supporting blocks are respectively formed on two opposite groove walls of the mounting groove. ### Claim 3 (depends on 1) The double-shaft hinge according to claim 1, wherein the shaft mounting base comprises a limiting block arranged on another surface of the shaft mounting base opposite to the first wheel and the second wheel, the limiting block is located between the two mounting holes, the first shaft comprises a third wheel, a rotatable angle of the first shaft is restricted along a rotating trajectory of the third wheel limited by the limiting block, the second shaft comprises a fourth wheel, and an other rotatable angle of the second shaft is restricted along a rotating trajectory of the fourth wheel limited by the limiting block. ### Claim 4 (depends on 3) The double-shaft hinge according to claim 3, wherein the limiting block comprises a first stopper plane arranged at a side of the limiting block facing the third wheel and capable of butting against the third wheel, a first inclined plane connected with the first stopper plane, a second stopper plane arranged at a side of the limiting block facing the fourth wheel and capable of butting against the fourth wheel, a second inclined plane connected with the second stopper plane, and two connecting surfaces parallel to two side edges of the shaft mounting base, the first stopper plane is connected with one of the two connecting surfaces, and the second stopper plane is connected with another one of the two connecting surfaces. ### Claim 5 (depends on 4) The double-shaft hinge according to claim 4, wherein the third wheel comprises a first track and a first butting plane provided at an end of the first track and capable of butting against the first stopper plane, and the fourth wheel comprises a second track and a second butting plane provided at an end of the second track and capable of butting against the second stopper plane. ### Claim 6 (depends on 5) The double-shaft hinge according to claim 5, wherein the first wheel comprises a first plane arranged at a face of the first wheel facing the shaft mounting base and connected with the first notch, and the second wheel comprises a second plane arranged at a face of the second wheel facing the shaft mounting base and connected with the second notch. ### Claim 7 (depends on 6) The double-shaft hinge according to claim 6, wherein the double-shaft hinge comprises a first torque generating component arranged on the first shaft and a second torque generating component arranged on the second shaft. ### Claim 8 (depends on 7) The double-shaft hinge according to claim 7, wherein the double-shaft hinge comprises an auxiliary support plate being spaced from the shaft mounting base and facing the equal armed lever, and the auxiliary support plate comprises two through holes provided for the first shaft and the second shaft to penetrate therethrough. ### Claim 9 (depends on 8) The double-shaft hinge according to claim 8, wherein the equal armed lever comprises a body formed with the first end and the second end, two assembling columns extending from the body and assembled with the two supporting blocks respectively, and an auxiliary positioning block formed on the body, and the auxiliary positioning block is arranged between the two assembling columns. ### Claim 10 (depends on 9) The double-shaft hinge according to claim 9, wherein the body is not a flat straight piece. ### Claim 11 (depends on 1) The double-shaft hinge according to claim 1, wherein the first wheel comprises a first plane arranged at a face of the first wheel facing the shaft mounting base and connected with the first notch; and the second wheel comprises a second plane arranged at a face of the second wheel facing the shaft mounting base and connected with the second notch. ### Claim 12 (depends on 1) The double-shaft hinge according to claim 1, wherein the double-shaft hinge comprises a first torque generating component arranged on the first shaft and a second torque generating component arranged on the second shaft. ### Claim 13 (depends on 1) The double-shaft hinge according to claim 1, wherein the equal armed lever comprises a body formed with the first end and the second end, two assembling columns extending from the body and assembled with the two supporting blocks respectively, and an auxiliary positioning block formed on the body, and the auxiliary positioning block is arranged between the two assembling columns. ### Claim 14 (depends on 13) The double-shaft hinge according to claim 13, wherein the body is not a flat straight piece.