Dual Locking Padlock with Decode Mechanism
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Solution Overview
Problem
Current padlocks lack dual locking mechanisms and a decode function to retrieve lost combination codes, which compromises security and user convenience.
Innovation Solution
A padlock design featuring dual locking controls via key and combination mechanisms, along with a decode function that allows users to retrieve lost combination codes by shifting the decode plate and catching decode fins, ensuring secure locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single locking mechanism (key or combination) is used, then the device complexity is reduced, but the security and reliability are compromised
Solution Approach 1:
The locking system is segmented into two independent locking mechanisms: a key-controlled locking mechanism and a combination-controlled locking mechanism. Each mechanism operates independently with its own control element (key or combination dial), allowing the padlock to require both mechanisms to be unlocked simultaneously, thereby enhancing security without requiring a single overly complex mechanism
Solution Approach 2:
The padlock body is designed to accommodate multiple types of control elements (key cylinder and combination dial) within a single locking structure. The shackle and locking mechanism serve universal functions for both key and combination operations, allowing the same physical structure to support multiple unlocking methods while maintaining a unified design
2Ease of operation
If a decode function is added to retrieve lost codes, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
A decode mechanism is pre-configured within the padlock that allows retrieval of the combination code through a specific operational sequence. The decode dial and associated mechanical components are installed in advance, enabling users to recover lost codes by following the predetermined decoding procedure without requiring external tools or assistance
Solution Approach 2:
The decode mechanism introduces an intermediary element (decode dial with visible indicators) that mediates between the user and the hidden combination code. By rotating the decode dial and observing the positions of decode balls or indicators, users can indirectly determine the correct combination without directly accessing or knowing the code, thus maintaining security while enabling code retrieval
Data Source
AI summary
A padlock comprising a lock body, a combination mechanism to control the movement of the cam-spindle vertically, a key mechanism to control the movement of the cam-spindle rotationally, more than one clutch that is mounted in the cam-spindle which controls the vertically movement of the cam-spindle, wherein the cam-spindle is configured to control the locking and unlocking of the combination mechanism, and wherein more than one dial is mounted in the lock body, a locking bolt contacts the shackle, and the shackle has a long leg and a short leg with a bolt-receiving-cutout.