Code Wheel Combination Lock Automatic Reset Mechanism
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Solution Overview
Problem
Conventional combination locks do not automatically reset the code wheel after unlocking, leading to a security risk of password exposure.
Innovation Solution
A novel code wheel combination lock that includes a reset mechanism, positioning member, and protection frame, allowing for automatic code wheel reset after unlocking and before locking, thereby preventing password exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual password scrambling is required after locking, then the lock provides basic security, but the user must remember to manually scramble the password which creates security risk of password exposure
Solution Approach 1:
The lock automatically scrambles the password by rotating the code wheel to a random position after each successful unlocking, eliminating the need for manual intervention. The system serves itself by detecting the unlocked state and autonomously changing the password, thereby resolving the contradiction between reliability and ease of operation.
Solution Approach 2:
The lock detects the unlocked state through the position of the lock tongue and code wheel shaft, and uses this feedback to trigger the automatic password scrambling function. When the system senses that the lock has been opened, it automatically initiates the code wheel rotation to change the password, creating a closed-loop control system that enhances security without requiring user action.
2Reliability
If the code wheel is fixed during password input, then the password setting is secure, but the code wheel cannot be reset automatically after unlocking
Solution Approach 1:
The code wheel transitions between fixed and rotatable states based on the operational phase. During password input, the positioning member fixes the code wheel for secure setting. After unlocking, the positioning member releases and the protection frame enables the code wheel to rotate automatically for password scrambling. This dynamic state change resolves the contradiction between security and automation.
Solution Approach 2:
The locking mechanism is divided into distinct functional segments: the positioning member for fixing the code wheel during password input, the protection frame for controlling the rotatable state, and the reset mechanism for automatic scrambling. Each segment operates independently in different phases, allowing the code wheel to be both fixed and rotatable at different times without conflict.
3Ease of manufacture
If the lock structure is simple, then the manufacturing is easy, but it cannot provide automatic code wheel reset function
Solution Approach 1:
The automatic reset function is merged with the existing locking mechanism by integrating the protection frame and positioning member into the code wheel assembly. The code wheel shaft serves dual purposes: it controls the lock tongue position and enables the protection frame to rotate the code wheel for automatic scrambling. This merging approach adds automation functionality without significantly increasing structural complexity.
Solution Approach 2:
The code wheel shaft performs multiple functions: it connects to the lock tongue for locking/unlocking, it serves as an axis for the code wheel rotation, and it acts as a drive mechanism for the protection frame to rotate the code wheel during automatic password scrambling. This multi-functionality reduces the need for separate components, maintaining manufacturing simplicity while enabling automation.
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 automatic code wheel reset function significantly reduces the risk of password exposure and ensures that the password is scrambled each time the lock is unlocked and locked, enhancing security and user convenience.
Implementation Method 1
The reset mechanism is configured to reset the code wheels... The reset magnet is configured to attract the code wheel magnets for resetting the code wheels
Implementation Method 2
The code wheel shaft passes through the movement cavity and is movable axially relative to the movement cavity, in cooperation with the lock tongue to realize unlocking and locking
Implementation Method 3
The bushings are sleeved on the code wheel shaft, and are selectively stationary or rotatable relative to the code wheel shaft along with axial movement of the code wheel shaft. The code wheels are disposed corresponding to the bushings, and selectively rotate together with the bushings or rotate relative to the bushings
Data Source
AI summary
Disclosed in the present invention is a novel code wheel combination lock, comprising a knob and a face plate that can rotate with respect to each other, a lock tongue, and a code wheel assembly. The code wheel assembly comprises a base having an accommodation cavity, a code wheel shaft, several sets of bushings and code wheels, a reset mechanism, a positioning member, and a protection frame; the base is mounted on the face plate; the code wheel shaft passes through a movement cavity and can axially moves; the bushings are sleeved on the code wheel shaft and can rotate together with the code wheel shaft or with respect to the code wheel shaft; the code wheels are sleeved on the bushings and can rotate together with the bushings or with respect to the bushings; the reset mechanism is used for resetting the code wheels; the positioning member is used for limiting reset of the code wheels; the protection frame is used for changing the matching mode between the code wheels and the bushings; in the rotation of the knob and the face plate with respect to each other, there are a first position, a second position and a third position to respectively implement the functions of locking, automatic code wheel reset, and manual password setting. The present invention has a function of automatically resetting the code wheels after unlocking and before locking, thereby improving the product safety and preventing password exposure.