Door Lock Indicating Sliding Block for Stable Vibration-Resistant Signals
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Solution Overview
Problem
Current door lock mechanisms in electrical appliances, such as washing machines, experience instability in indicating the locked or released state due to vibrations, leading to potential semi-contact states and unstable output signals, and the transition from open to closed positions can be slow and prone to bad contacts.
Innovation Solution
A door lock mechanism featuring a main sliding block and an indicating sliding block that moves between locked and released positions, with an indicating latch and biasing apparatus, including a spring, to provide a stable indication of the lock state through instantaneous position changes, preventing semi-contact and ensuring stable output signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional door lock mechanism is used, then the structure is simple, but the indicating signal becomes unstable due to vibrations causing semi-contact states
Solution Approach 1:
The door lock mechanism is divided into two independent sliding blocks: a main sliding block for locking functionality and an indicating sliding block for state indication. This segmentation allows the indicating function to operate independently, preventing vibration-induced semi-contact states while maintaining overall structural simplicity.
Solution Approach 2:
The indicating sliding block acts as an intermediary element between the main sliding block and the indicating apparatus. It translates the locked/released states into stable closed/open positions that reliably trigger the indicating signal without being affected by vibrations that would cause semi-contact states in direct contact mechanisms.
2Speed
If the indicating sliding block moves directly without assistance, then the structure is simple, but the transition is slow and prone to bad contacts
Solution Approach 1:
The biasing apparatus (spring) is pre-loaded to store elastic potential energy. When the main sliding block moves, it releases this stored energy to rapidly propel the indicating sliding block to its target position, ensuring fast transition and eliminating slow, gradual movements that cause semi-contact states.
Solution Approach 2:
The spring-based biasing apparatus provides periodic restoring force that accelerates the indicating sliding block's movement. This creates a rapid, decisive transition from one stable position to another, preventing prolonged periods in intermediate states that would result in bad contacts.
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 mechanism ensures the indicating latch remains steadily in closed or open positions, avoiding semi-linkage or bad contacts, and maintains stable output signals even with appliance vibrations, facilitating efficient and reliable door lock operation.
Implementation Method 1
a biasing apparatus, and the biasing apparatus pushes the indicating sliding block to move from the open position to the closed position; and the biasing apparatus is a spring
Data Source
AI summary
The present application provides a door lock, comprising a main sliding block, the main sliding block being able to move to and fro between a locked position and a released position along a first direction (length direction), and the main sliding block being able to lock the door lock when at the locked position, and the main sliding block being able to release the door lock when at the released position; and an indicating sliding block, the indicating sliding block being able to move to and fro between a closed position and an open position along the first direction (length direction) when the main sliding block moves to and fro between the locked position and the released position along the first direction (length direction), wherein the closed position and the open position of the indicating sliding block are used for indicating whether the door lock is in a locked state or in a released state. The door lock of the present application can make the output state of a door lock state indicating apparatus stable.