Lock Cylinder Slide Stop Speed Constraint
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Solution Overview
Problem
Existing lock cylinders are complex in assembly, costly, and vulnerable to manipulation through rebounding impacts, requiring improved security and reduced energy consumption.
Innovation Solution
A lock cylinder design featuring a slide with a stop that interacts with a stationary stop surface, allowing movement into a coupled position only up to a predetermined speed and acceleration, and rebounding back to the uncoupled position if exceeded, combined with a simplified clutch mechanism using a spring element for energy storage and reduced component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clutch mechanism with multiple components is used to couple the shaft and locking lug, then reliable coupling is achieved, but assembly complexity and production costs increase
Solution Approach 1:
The patent combines the clutch mechanism components into a more integrated structure where the slide and coupling elements are merged into a unified assembly that can be installed as a single unit, reducing the number of separate parts and simplifying assembly procedures while maintaining reliable coupling between the shaft and locking lug
Solution Approach 2:
The clutch mechanism is segmented into modular components that can be pre-assembled and tested separately, then installed together in a standardized sequence, reducing overall assembly complexity and facilitating quality control during manufacturing
2Ease of operation
If traditional lock cylinder designs are used, then functional requirements are met, but vulnerability to rebound impact manipulation increases
Solution Approach 1:
The lock cylinder incorporates a preliminary anti-action mechanism that detects and counteracts rebound impacts before they can manipulate the locking mechanism. This includes impact sensors and responsive blocking features that activate when abnormal forces are detected, preventing unauthorized operation while allowing normal functional use
Solution Approach 2:
The design converts the harmful rebound impact force into a beneficial security feature by using the impact detection to trigger enhanced locking modes or alarm functions, transforming the manipulation attempt into an opportunity for improved security response
3Ease of manufacture
If complex clutch mechanisms with multiple components are used, then coupling functionality is achieved, but production costs and energy consumption increase
Solution Approach 1:
The clutch mechanism is designed with self-service features including automatic engagement and disengagement through spring-loaded elements and cam mechanisms that eliminate the need for additional actuators or power sources, reducing energy consumption while maintaining full coupling functionality
Solution Approach 2:
The design replaces complex powered mechanical systems with purely mechanical spring and cam-based coupling mechanisms that achieve the same functionality without requiring external energy input, thereby reducing overall system energy consumption while maintaining coupling capabilities
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
Enhances security by preventing manipulation through rebound impacts and reduces production costs and energy consumption, ensuring high reaction speed and reliability with fewer components.
Implementation Method 1
a simplified clutch mechanism using a spring element for energy storage and reduced component count
Data Source
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AI summary
The cylinder (1) has a shaft (4) supported in a longitudinal hole (3) of a housing (2). A locking lug (6) is rotatable around a rotational axis (5). A coupling (8) is operated by a drive (7), and has a slider (9) movable from a decoupling position to a coupling position. The slider has a stop (10) that acts together with a stop surface (11) in the housing such that the slider is movable from the decoupling position to the coupled position relative to the housing and movement of the slider towards the coupling position is blocked during exceeding of preset speed and/or acceleration.