Single-DOF Pick Shield Assembly for Tamper-Resistant Locks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lock assemblies, particularly spring-loaded and deadbolt locks, are susceptible to tampering and require additional components during installation, which can be cumbersome and lead to accidental movement or damage, increasing installation costs and time.
Innovation Solution
A pick shield with a bolt portion and a shield mount securely coupled to a backing plate, allowing for a single degree of freedom of movement, which restricts unauthorized access and prevents accidental displacement during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional components are added to the lock device during installation using hand tools, then tampering resistance is improved, but installation complexity and risk of accidental damage increase
Solution Approach 1:
The pick shield and bolt portion are merged into a single integrated component, eliminating the need for separate installation steps. The pick shield is permanently attached to the bolt portion, forming one unified part that reduces installation complexity while maintaining tampering resistance.
Solution Approach 2:
The pick shield serves multiple functions: it prevents pick insertion into the keyway, protects the bolt portion from tampering, and integrates with the bolt mechanism. This multi-functionality reduces the need for additional separate components during installation.
2Reliability
If hand tools are used to add components during lock installation, then security features are improved, but installation time and risk of damage increase
Solution Approach 1:
The pick shield is pre-attached to the bolt portion during manufacturing, so that during installation the entire assembly is installed as one unit. This preliminary action eliminates the need for installers to use hand tools to attach the pick shield separately, reducing installation time and risk of accidental damage.
3Ease of operation
If the pick shield is freely movable during installation, then ease of installation is improved, but risk of accidental displacement and damage increases
Solution Approach 1:
The attachment mechanism is segmented into distinct functional elements: the attachment body with arm portion and aperture portion, and the shield mount with corresponding features. This segmentation allows the pick shield to be easily guided into position while the aperture-arm interaction provides automatic stabilization.
Solution Approach 2:
The arm portion acts as an intermediary element between the pick shield and the mounting structure. It provides a controlled interface that allows easy initial placement while automatically preventing excessive movement through the aperture constraint.
Data Source
AI summary
A pick shield for a door lock assembly that is configured to be restricted to a single degree of freedom relative to a backing plate of the door lock assembly when being secured to at least a portion of the door lock assembly. The pick shield is configured to be secured to the door lock assembly using one or more shield mounts that have previously been secured, or are an integral part of, the backing plate. One or more attachment bodies of the pick shield are configured to engage with the shield mount(s) in a manner that, upon the pick shield being displaced to an attached position, securely attaches the pick shield to the door lock assembly. Thus, and installer can securely install the pick shield to the door lock assembly merely by a displacement of the pick shield about the single degree of freedom.