Rotating Barrier Blocking Arm with Nested Core
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Solution Overview
Problem
Existing rotating barriers for access control do not effectively conceal their flexibility, making them recognizable and potentially hazardous during normal operation, especially when individuals collide with them at high speeds.
Innovation Solution
A rotating barrier with a flexibly formed blocking arm featuring a springy core piece and an outer sheath, where the springy core piece has high spring stiffness that only yields under collision forces causing injury, and is designed to remain inconspicuous during normal operation, using materials like rubber-elastic elements or springs with hinged bodies and adjustable bracing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the blocking arm is made resilient with padding or rubber-elastic material, then safety during collision is improved, but the flexibility becomes optically recognizable during normal operation
Solution Approach 1:
The patent applies nesting by placing a flexible, safety-providing core piece inside a rigid outer sheath. The core piece (made of rubber-elastic material or spring elements) is nested within the hard plastic outer sheath, allowing the flexible element to be hidden during normal operation while still providing cushioning during collision. This resolves the contradiction by making the flexibility invisible (non-recognizable) during normal operation but functional during impact.
Solution Approach 2:
The patent applies local quality by making only the core piece flexible while keeping the outer sheath rigid. The flexibility is localized to the internal core piece rather than the entire blocking arm visible surface. This allows the blocking arm to appear rigid and threatening during normal operation (maintaining deterrent effect) while providing localized flexibility and cushioning during collision for safety.
2Reliability
If the blocking arm is made rigid to maintain deterrent effect, then unauthorized access prevention is improved, but injury risk during high-speed collision increases
Solution Approach 1:
The patent applies nesting by placing a flexible, safety-providing core piece inside a rigid outer sheath. The core piece (made of rubber-elastic material or spring elements) is nested within the hard plastic outer sheath, allowing the flexible element to be hidden during normal operation while still providing cushioning during collision. This resolves the contradiction by making the flexibility invisible (non-recognizable) during normal operation but functional during impact.
Solution Approach 2:
The patent applies local quality by making only the core piece flexible while keeping the outer sheath rigid. The flexibility is localized to the internal core piece rather than the entire blocking arm visible surface. This allows the blocking arm to appear rigid and threatening during normal operation (maintaining deterrent effect) while providing localized flexibility and cushioning during collision for safety.
3Object-affected harmful factors
If the blocking arm is made flexible to prevent injury, then safety during collision is improved, but the barrier's deterrent effect is reduced
Solution Approach 1:
The patent applies nesting by placing a flexible, safety-providing core piece inside a rigid outer sheath. The core piece (made of rubber-elastic material or spring elements) is nested within the hard plastic outer sheath, allowing the flexible element to be hidden during normal operation while still providing cushioning during collision. This resolves the contradiction by making the flexibility invisible (non-recognizable) during normal operation but functional during impact.
Solution Approach 2:
The patent applies local quality by making only the core piece flexible while keeping the outer sheath rigid. The flexibility is localized to the internal core piece rather than the entire blocking arm visible surface. This allows the blocking arm to appear rigid and threatening during normal operation (maintaining deterrent effect) while providing localized flexibility and cushioning during collision for safety.
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 prevents injuries by ensuring the blocking arm remains unrecognizable during normal operation while providing sufficient flexibility only upon collision with high-force impacts, thus enhancing safety without compromising the barrier's functionality.
Implementation Method 1
The springy core piece has such high spring stiffness that the blocking arm gives way only when a collision with a person produces forces that would lead to injury
Implementation Method 2
The springy core piece can be formed by an element made of rubber-elastic material and/or a spring. The rubber-elastic element can be made of a thermoplastic elastomer, for example on the basis of polyethylene
Implementation Method 3
The spring can be formed by a helical spring and/or a springy, for example circular or prism-shaped rod
Data Source
AI summary
A rotating barrier having a rotating arm assembly has at least one blocking arm which is formed at least over part of its length by a resiliently flexible core piece and is provided with an outer sheath.