Cipher Wheel Lock Reset Structure for Stable Code Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cipher wheel locks face instability and inaccuracy in code changes due to limited travel of the lock switch, leading to potential overshooting and incorrect code transitions, especially during automatic resetting, which is problematic in high-turnover environments.
Innovation Solution
A reset auxiliary structure for cipher wheel locks incorporating a knob, cipher wheel assembly, reset cam, and auxiliary guide block, where the auxiliary guide block engages with the shifting lever to stabilize the code change by compensating for the short travel of the reset cam, ensuring accurate and stable code transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gradual reset cam is used to drive the cipher wheel to change the code, then the code change function is achieved, but the cipher wheel may overshoot due to inertia, resulting in unstable and inaccurate code changes
Solution Approach 1:
The auxiliary guide block is positioned in advance to engage with the shifting lever before the reset cam's highest point is reached. This preliminary engagement prepares the shifting lever for the upcoming code change, ensuring it is properly positioned and reducing the risk of overshooting due to inertia when the reset cam acts on it.
Solution Approach 2:
The auxiliary guide block serves as an intermediary element between the reset cam and the shifting lever. It provides an additional control point that moderates the interaction between the reset cam and shifting lever, ensuring smoother and more accurate code changes by preventing direct, uncontrolled engagement.
2Device complexity
If the width of the highest point of the gradual reset cam is made small to achieve compact design, then the device size is reduced, but the code change travel becomes very short, causing the cipher wheel to overshoot due to inertia
Solution Approach 1:
The auxiliary guide block acts as a mediator that extends the effective interaction length between the reset cam and the shifting lever. Even though the reset cam's highest point has small width for compactness, the auxiliary guide block provides additional engagement distance, ensuring sufficient code change travel and preventing overshooting while maintaining the compact reset cam design.
Solution Approach 2:
The code change mechanism is segmented into multiple interaction zones: the guide surface of the reset cam and the support surface of the auxiliary guide block. This segmentation allows the reset cam to maintain a compact highest point while the auxiliary guide block provides the additional travel distance needed to prevent overshooting, effectively dividing the control function across multiple components.
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 auxiliary guide block structure stabilizes the code change process, preventing inaccuracies and ensuring precise resetting of the cipher wheel to the desired code, such as 0000, even with rotational inertia, enhancing user experience in high-turnover settings.
Implementation Method 1
The guide surface is located beside the reset surface. The reset surface is positioned at the highest point of the reset cam. After being tilted by the guide surface, the shifting lever engages with the reset surface and the support surface of the auxiliary guide block.
Data Source
AI summary
A reset auxiliary structure for cipher wheel locks includes a knob; a cipher wheel assembly rotatable to the knob; a reset cam; and an auxiliary guide block. The knob is centrally provided with a receiving chamber for accommodating the cipher wheel assembly. The cipher wheel assembly includes a positioning piece, which is provided with a shifting lever. The reset cam is synchronously rotatable to the knob. The reset cam includes a reset surface and a guide surface that are connected. The guide surface is located beside the reset surface, and the reset surface is positioned at the highest point of the reset cam. The auxiliary guide block is movable to the reset cam. The support surface of the auxiliary guide block is positioned beside the reset surface. The shifting lever is connected with the reset cam.