Swing Seat Structure With Embedded Cables for Cut Resistance

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Solution Overview

Problem

Public swing seats are vulnerable to vandalism, and existing solutions that make them resistant, such as metal sheet inserts, expose dangerous cutting edges if damaged, posing a risk to users.

Innovation Solution

A swing seat design featuring a tension member with a fabric band and embedded metal cables that prevent cutting, combined with a rubber cover for safety and protection, maintaining flexibility and user comfort while deterring vandalism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal sheet insert is used to prevent vandalism, then the seat resists cutting, but the exposed edge becomes a dangerous cutting element

Engineering Contradiction:

Improvevandalism resistanceVSAvoidcutting hazard to users

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The metal cable is nested within the fabric band structure, specifically embedded in the folded edges. This nesting approach allows the metal cable to provide cutting resistance while being concealed by the fabric, eliminating the exposed dangerous edge problem while maintaining vandalism protection

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The fabric band acts as an intermediary layer between the metal cable and the external environment. The fabric fold covers and contains the metal cable, mediating the interaction between the hard metal (protection function) and the soft fabric (safety function), allowing both properties to coexist without contradiction

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the seat is made flexible and lightweight, then user safety and comfort are improved, but the seat becomes vulnerable to cutting

Engineering Contradiction:

Improveuser safetyVSAvoidresistance to cutting

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The seat combines two fundamentally different materials with complementary properties: fabric (soft, flexible, safe for users) and metal cable (hard, strong, cut-resistant). This composite structure allows the fabric to provide safety and comfort while the embedded metal cable provides cutting resistance, resolving the contradiction between softness and cut-protection

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS9451827B1Vandal resistant safety swing seat

Publication Date: 2016.09.27 CIRAOLO CHARLES

AI summary

A vandal resistant swing seat generally comprises a tension member and a rubber cover. The tension member comprises a body connected to end connectors that attach to suspension chains. The body includes a tension component comprising an elongate fabric band having a front edge having a fold, and a rear edge having a fold, and a protection component comprising a metal cable disposed in each fold. The flexible metal wires prevent the tension fabric from being cut. In an alternate embodiment, the fabric band is comprised of a central mesh band of a first fabric and front and rear edge bands of a second fabric of higher tensile strength.