Oven Door Locking Sleeve for Automatic Guide Coupling
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Solution Overview
Problem
Existing cooking appliances with retractable doors face challenges in securely adjusting the locked state of the door coupled to a guide device external to the door, often requiring manual operation which can be forgotten during assembly, leading to a risk of the door remaining unlocked.
Innovation Solution
A cooking appliance with a coupling device that includes a non-destructively detachable locking mechanism featuring a tubular sleeve externally mounted on the bearing socket, allowing automatic rotation from an unlocking to a locking position as the door moves, eliminating the need for direct manual operation and ensuring a secure locked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual locking mechanism is used on the door, then the locking device can be directly operated, but the locked state may be forgotten during assembly leading to unreliable locking
Solution Approach 1:
The locking device automatically sets the locked state through the door's own movement. The sleeve rotates from the unlocking position to the locking position autonomously as the door moves from the first inclined position to the second inclined position, eliminating the need for manual operation and ensuring reliable locking without human intervention.
Solution Approach 2:
The locking mechanism is pre-configured with a driver that automatically engages with the sleeve during door movement. The geometric arrangement of the driver and sleeve ensures that the locked state is established in advance of any potential door removal attempt, preventing the forgetting issue associated with manual locking.
2Ease of manufacture
If the sleeve is mounted on the door, then the locking mechanism is integrated, but the assembly process requires precise alignment and manual adjustment
Solution Approach 1:
The sleeve is extracted from the door structure and mounted externally on the bearing socket. This separation simplifies the door assembly process while the external mounting on the bearing socket maintains the locking function. The driver protruding from the sleeve provides automatic engagement without requiring precise alignment during assembly.
Solution Approach 2:
The bearing socket serves as an intermediary mounting structure for the sleeve, decoupling the locking mechanism from the door itself. This intermediary structure simplifies both door manufacturing and locking mechanism installation, as the sleeve can be independently mounted on the bearing socket without complex integration with the door assembly.
3Reliability
If the locking device requires direct manual rotation, then the mechanism is simple, but the locked state cannot be automatically ensured during assembly
Solution Approach 1:
The locking mechanism transitions from a static manual rotation system to a dynamic automatic rotation system. The sleeve rotates automatically in response to door movement, with the driver providing the necessary mechanical input. This dynamic behavior ensures reliable locking without adding significant complexity to the overall mechanism.
Solution Approach 2:
The automatic rotation mechanism allows the sleeve to quickly transition from the unlocking position to the locking position during door movement. This rapid transition ensures the locked state is established without delay, skipping the manual adjustment step and directly achieving the secure locked state.
Data Source
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AI summary
The invention relates to a cooking appliance (1) with a housing (2) and a cooking chamber (4) formed therein, with a door (7), with a guide device (16) with a locking device (29) with which the coupled state between the door (7) and the guide device (16) can be locked, wherein the locking device (29) has a bearing sleeve (27) with a receptacle (28) into which a bearing element (21) engages in the coupled state, wherein the locking device (29) has a tubular sleeve (30) with at least one driver (31) which is rotatably mounted on the bearing sleeve (27), so that in the coupled state an unlocking position between the sleeve (30) and the bearing element (21) can be set in a first rotational position of the sleeve (30) and in the coupled state a locking position between the sleeve (30) and the bearing element (21) can be set in a second rotational position of the sleeve (30).The invention also relates to a method.