Key Destroyer Grinding Chamber and Safety Wall Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing key destruction methods lack the ability to securely and efficiently destroy keys while retaining evidence of destruction, ensuring operator safety, and maintaining cost-effectiveness.
Innovation Solution
A motor-driven grinding element within an enclosure is used, with a holder to grip the key and a tube to guide it for secure engagement with the grinding element, ensuring only the coded portion is ground away, and metal particles are contained, while allowing the key head to be retained as evidence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a motor driven grinding element is used to destroy keys, then key destruction effectiveness is improved, but operator safety deteriorates due to flying metal particles
Solution Approach 1:
The grinding element is nested within a grinding chamber enclosure that contains the key destruction process. The holder is inserted through a tube that passes through a safety wall into the grinding chamber, creating a nested structure where the harmful grinding operation is contained within the enclosure while the operator remains outside the hazardous zone.
Solution Approach 2:
The tube serving as the guide for the holder acts as an intermediary component. It allows the holder to be inserted through the safety wall into the grinding chamber while maintaining structural integrity and preventing metal particles from escaping to the operator side. The tube mediates between the operator's side and the grinding chamber, enabling key destruction while protecting the operator.
2Reliability
If the holder firmly grips the key for secure destruction, then reliability is improved, but ease of operation deteriorates due to difficulty in inserting and removing the key
Solution Approach 1:
The key holder is segmented into a body portion and gripping jaws that can move relative to each other. The jaws can be opened and closed independently of the insertion/removal motion, allowing the key to be easily inserted when jaws are open and securely gripped when jaws are closed. This segmentation enables independent control of gripping function and insertion/removal function.
Solution Approach 2:
The gripping jaws are designed to be dynamically adjustable, moving from an open position during insertion to a closed position during gripping. The holder transitions between different states (open for insertion, closed for gripping, open for removal), making the operation easier while maintaining secure gripping when needed.
3Loss of information
If the coded portion of the key is ground away for destruction evidence, then key destruction verification is improved, but loss of information deteriorates as the coded portion is removed
Solution Approach 1:
The grinding element is positioned to grind away only the coded portion of the key that protrudes beyond the safety wall, extracting and removing only the necessary information-bearing material while leaving the head portion intact. This selective extraction destroys the key's functional coded portion while preserving the identification information on the head.
Solution Approach 2:
The grinding action is localized to specific regions: the coded portion of the key is ground away while the head portion is preserved. The tube and safety wall create a localized grinding zone that affects only the intended portion of the key, ensuring that destruction evidence is created without completely destroying the identification information on the key head.
4Manufacturing precision
If the tube and safety wall constrain the key path for precise grinding, then manufacturing precision is improved, but device complexity deteriorates due to additional structural components
Solution Approach 1:
The tube serves multiple functions simultaneously: it guides the holder during insertion, supports the holder laterally, defines the grinding path, and acts as part of the enclosure structure. The safety wall also serves multiple purposes: it separates the grinding chamber from the operator side, contains metal particles, and positions the coded portion for grinding. This multi-functionality reduces the need for separate dedicated 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 solution ensures safe, reliable, and inexpensive key destruction, preventing accidents by containing metal particles and allowing secure retention of key heads for record-keeping, thus addressing the need for secure key management.
Implementation Method 1
a motor driven grinding element arranged within an enclosure into which a coded portion of a key can be thrust to be ground away
Data Source
AI summary
A key destroyer preferably deploys an angle grinder fitted with a grinding chamber, cover, and insertion tube through which a key can be inserted to be destroyed. The key is gripped in a holder that can slide key foremost through the support tube so that the coded portion of the key can pass through a safety wall at the inner end of the support tube and engage a rotating abrasive disk that grinds away the coded portion of the key. The head of the destroyed key can then be retained as evidence that a particular copy of a key no longer exists.