Lock Assembly Dual-Side Unlocking Mechanism
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Solution Overview
Problem
Conventional locks designed to rotate a core for unlocking from either side can lead to emergencies when a key or object is inserted from one side, preventing unlocking from the other side, especially in public facilities, and existing anti-break locks fail if the core is damaged.
Innovation Solution
A lock assembly with a collar and dual units, where the second block's lateral piece enters a slot to compress the inner spring, allowing the first driving member to move out of the slot for outside unlocking, and the first block's push portion compresses the outer spring to remove the second lateral piece from the slot for inside unlocking, ensuring the core on the outside can rotate freely while preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a key is inserted into the core from outside to unlock the lock, then the core can be rotated to unlock the lock, but another key cannot be inserted from the inside to unlock the lock
Solution Approach 1:
The lock is divided into two independent units: an inner unit with a first core and first driving member, and an outer unit with a second core and second driving member. Each unit can be operated independently from its respective side, allowing simultaneous or separate unlocking operations without interference between the two sides
Solution Approach 2:
The collar acts as an intermediary component that receives lateral pieces from both driving members and transmits rotational motion to both cores. The collar's slots and lateral piece engagement mechanism enable coordinated or independent operation of the two cores, resolving the conflict between security and dual-side accessibility
2Reliability
If the lock is designed to prevent unauthorized access by engaging block with cam, then security is improved, but the lock cannot be unlocked from the other side when a key or object is inserted
Solution Approach 1:
The driving members are designed with movable lateral pieces that can dynamically engage or disengage from the collar's slots based on operational needs. The springs provide dynamic force to maintain engagement during normal operation but allow disengagement when needed, enabling the system to adapt between security mode and emergency unlocking mode
Solution Approach 2:
The springs are pre-loaded to maintain the lateral pieces in a ready-to-engage position with the collar slots. This preliminary positioning ensures that when emergency unlocking is needed, the mechanism can quickly transition to the unlocked state without requiring complex additional actions, thus providing adaptability for emergency situations
3Ease of operation
If the core is made rotatable for unlocking, then ease of operation is improved, but the core can be damaged or removed by unauthorized persons
Solution Approach 1:
The collar slots are positioned asymmetrically relative to the driving members' lateral pieces. The slots are located such that they engage the lateral pieces only during legitimate unlocking operations, while preventing unauthorized removal or damage of the cores. The asymmetric design ensures that the cores can rotate for unlocking but cannot be easily extracted or tampered with
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
Enables unlocking from either side even if a key or object is inserted from the outside, enhances safety by preventing outside unlocking when a key is inserted from inside, and includes anti-break features to prevent core damage and unauthorized rotation.
Implementation Method 1
At least one inner spring is located between the first block and the first driving member... At least one outer spring is located between the second block and the second driving member
Data Source
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AI summary
A lock assembly includes an inner unit, an outer unit and a collar. The collar includes a first slot. The inner unit includes a first part, a first block, a first driving member and an inner spring. The outer unit includes a second part, a second block, a second driving member and an outer spring. When unlocking the lock assembly from outside of the lock assembly, the second lateral piece of the second driving member enters into the first slot, the collar is operated by the second part via the second driving member. When a key is inserted into the lock assembly from the inside, the second driving member is removed off from the first slot, and the first lateral piece enters into the first slot to unlock the lock assembly even if a key or an object is inserted into the lock assembly from outside.