# US 11,029,034 B2 · Locking mechanism and cooking machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,034 B2 - Document ID: US11029034B2 - Status: Granted - Kind: B2 - Application number: 16/277,226 - Filed: 2019-02-15 - Published: 2019-08-29 - Granted: 2021-06-08 - Earliest claimed: 2018-02-23 - Assignees: Panasonic Appliances Microwave Oven (Shanghai) China Co., Ltd. - Applicants: Panasonic Appliances Microwave Oven (Shanghai) China Co., Ltd. - Inventors: Sien Lin - Web page: https://patentgrep.com/patent/US11029034B2 ## CPC - F24C 15/022: {Latches} - E05B 1/0038: {Sliding handles, e.g. push buttons (E05B13/105 takes precedence)} - E05B 9/08: Fastening {locks or fasteners or parts thereof, e.g.} the casings of latch-bolt locks or cylinder locks to the wing {(on glass wings E05B65/0025)} - E05B 13/002: {locking the handle (E05B13/10, E05B47/0657 take precedence)} - E05B 63/248: {the striker being movable for latching, and pushed back by a member on the wing for unlatching, or vice versa} - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS ## Abstract A locking mechanism and a cooking machine are provided for home appliances. The locking mechanism is provided on a control panel of the cooking machine and used to control the door-opening button of the cooking machine. The door-opening button is provided with a door-opening member for opening the door of the cooking machine. The locking mechanism switches the door-opening button selectively in a locked state or an unlocked state; the door cannot be opened even if the door-opening button is pressed in the locked state, and the door can be opened if the door-opening button is pressed in the unlocked state. The locking mechanism provided by the present invention is small in size and good in versatility, and can lock the door fundamentally in the door-opening operation, thus realizing simpler and more effective protection and hence ensuring use safety of users especially the children. ## Claims ### Claim 1 A locking mechanism for a control panel of a cooking machine to control a door-opening button of the cooking machine, the door-opening button being provided with a door-opening member for opening a door of the cooking machine, wherein the locking mechanism comprises: a locked state and an unlocked state, wherein the locking mechanism is selectively switchable between the locked state, in which the door cannot be opened even if the door-opening button is pressed in the locked state, and the unlocked state, in which the door can be opened if the door-opening button is pressed in the unlocked state; a position-limiting member; and an eject pin which comprises a paddle and a guide, wherein the paddle is engaged or disengaged with the guide when the eject pin is pressed, and wherein the position-limiting member is movable in a direction orthogonal to a movement direction of the door-opening member by movement of the eject pin. ### Claim 2 (depends on 1) The locking mechanism according to claim 1, wherein the door-opening member comprises a central guide post provided on the door-opening button, and the position-limiting member is provided with a through hole for allowing the central guide post to pass through. ### Claim 3 (depends on 1) The locking mechanism according to claim 1, wherein the eject pin and the position-limiting member are provided separately or a portion of the position-limiting member acts as the guide. ### Claim 4 (depends on 3) The locking mechanism according to claim 3, wherein the paddle is provided with a protrusion on one end thereof, and the guide is provided with a projecting portion that is capable of being engaged or disengaged with the protrusion. ### Claim 5 (depends on 1) The locking mechanism according to claim 1 further comprising: a blocking cover, wherein the position-limiting member is provided between the blocking cover and the control panel. ### Claim 6 (depends on 2) The locking mechanism according to claim 2, wherein the central guide post is further provided with a spring, and the spring is provided between the door-opening button and the control panel. ### Claim 7 A cooking machine comprising: a door; a control panel; a door opening button provided with a door-opening member for opening the door; and a locking mechanism comprising: a locked state and an unlocked state, wherein the locking mechanism is selectively switchable between the locked state, in which the door cannot be opened even if the door-opening button is pressed in the locked state, and the unlocked state, in which the door can be opened if the door-opening button is pressed in the unlocked state; a position-limiting member; and an eject pin which comprises a paddle and a guide, wherein the paddle is engaged or disengaged with the guide when the eject pin is pressed, and wherein the position-limiting member is movable in a direction orthogonal to a movement direction of the door-opening member by movement of the eject pin. ### Claim 8 A locking mechanism for a control panel of a cooking machine to control a door-opening button of the cooking machine, the door-opening button being provided with a door-opening member for opening a door of the cooking machine, wherein the locking mechanism comprises: a locked state and an unlocked state, wherein the locking mechanism is selectively switchable between the locked state, in which the door cannot be opened even if the door-opening button is pressed in the locked state, and the unlocked state, in which the door can be opened if the door-opening button is pressed in the unlocked state; a position-limiting member, which has a through hole; an eject pin, wherein the position-limiting member is movable in a direction orthogonal to a movement direction of the door-opening member by movement of the eject pin; and a blocking cover, wherein the position-limiting member is provided between the blocking cover and the control panel, and wherein the blocking cover is provided with a notch at a position corresponding to the door-opening member, and the door-opening member is capable of passing through the through hole and the notch in the unlocked state.