Eccentric Door Locking Hook for Compact Oven Pyrolysis Locks
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Solution Overview
Problem
Existing door locks for household appliances, particularly ovens with pyrolysis functions, require large space and numerous components, limiting their compactness and reliability in high-temperature environments.
Innovation Solution
A door lock design featuring a rotatable eccentric mechanism with a locking hook that pivots and displaces longitudinally, driven by an electric motor, allowing for reduced installation space and ensuring secure operation even during power failures, with preloading springs for backup locking and position sensors for safety checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional door lock with locking piston and shaft is used, then reliable door locking is achieved, but the space requirement and overall height become relatively large
Solution Approach 1:
The patent extracts the locking function from a complex multi-component system (locking piston, shaft, multiple interacting parts) and implements it through a single rotatable locking element that integrates both detection and locking functions, thereby reducing space requirements while maintaining reliability
Solution Approach 2:
The rotatable locking element serves multiple functions simultaneously: it acts as both the door sensor (detecting door position) and the locking mechanism (physically securing the door), eliminating the need for separate components and reducing overall space occupation
2Reliability
If multiple interacting components are used in the door lock, then secure operation is achieved, but the device complexity increases
Solution Approach 1:
The patent removes unnecessary intermediate components from the locking system, using a single rotatable element that directly performs both sensing and locking functions, thereby reducing device complexity while preserving secure operation through simplified mechanics
Solution Approach 2:
The patent merges the door sensor function and the locking mechanism into a single integrated rotatable element, reducing the number of interacting components while maintaining secure operation through the element's dual functionality
3Volume of moving object
If the door lock is installed in the air inlet duct, then space is saved, but the overall height within the duct becomes constrained
Solution Approach 1:
The patent reorients the locking element's rotation axis to be perpendicular to the duct's longitudinal axis, allowing the mechanism to operate in a different spatial dimension that does not increase the duct's height requirement, thereby saving installation space without constraining overall height
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves a significantly reduced space requirement, ensuring reliable and safe operation by preventing incorrect locking and allowing for compact installation within air intake ducts, while maintaining secure door closure during high-temperature processes.
Implementation Method 1
The closure device comprises at least one closure hook, which is accommodated by means of a rotatable eccentric so that it can pivot between the open position and the locked position and can be displaced longitudinally. During the rotation of the eccentric, the locking hook is thereby displaced from the open position into the locking position along its longitudinal direction.
Implementation Method 2
The door lock according to the invention has a simple structure and provides reliable protection against incorrect operation. The locking hook can be preloaded into the locking position with a preloading spring.
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
The door lock (1) has a treatment room (5) arranged in a body. The treatment room is closed by a door. A door sensor device is provided to detect whether the door is locked. A lock device is provided for locking the door in a secured manner. The locking device comprises a locking hook, which is incorporated between the opening position and the locking position in a pivoted and longitudinally displaceable manner. An independent claim is also included for a household appliance has a housing.