AB Electrolux has been granted a patent for a door lock system for domestic appliances, specifically for cooking ovens. The system includes a hook element that can be pivoted and moved along a main axis to transition between locked and unlocked states. It also features sliding members and a motor-driven cam to control the movement of the hook element. GlobalData’s report on AB Electrolux gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on AB Electrolux, Cleaning robots was a key innovation area identified from patents. AB Electrolux's grant share as of September 2023 was 65%. Grant share is based on the ratio of number of grants to total number of patents.

Door lock system with motor-driven sliding members and eccentric disks

Source: United States Patent and Trademark Office (USPTO). Credit: AB Electrolux

A recently granted patent (Publication Number: US11773619B2) describes a door lock system for a domestic appliance. The system includes a hook element that can pivot and move along a main axis to transition between locked and unlocked states. The hook element is controlled by two sliding members that are driven by a motor and a cam mechanism. The cam mechanism consists of at least two eccentric disks that drive the sliding members.

The door lock system also features a detecting element that can detect the presence or proximity of a counterpart that engages with the hook element. This detecting element is movable along the main axis. Additionally, the system includes multiple switch elements that respond to different states of the lock system. A first switch element is switchable by the detecting element, a second switch element is switchable by the first sliding member, and a third switch element is switchable by the second sliding member.

The door lock system can be attached to a carrier using a fixation element, and a fixation spring element is arranged between the fixation element and a base part of the system. The hook element, sliding members, cam, and detecting element are all arranged within or at the base part, which can be formed as a casing or frame.

In another embodiment, the door lock system includes a third sliding member that is movable along the main axis and can also pull the hook element to the locked pulled state. The second and third sliding members are arranged in series and parallel to the first sliding member. The system also includes multiple spring elements that provide compensation and support for the sliding members and detecting element.

The patent also mentions the application of this door lock system in a cooking oven. The system can be used to lock and unlock the oven door, ensuring safe and secure operation.

Overall, this granted patent describes a door lock system for domestic appliances that utilizes a motor-driven cam mechanism to control the movement of a hook element. The system includes various components such as sliding members, switch elements, and spring elements to ensure proper operation and functionality.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.