Composite Garden Hose Structure for Wear-Resistant Durability
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Solution Overview
Problem
Existing garden hoses are not tough enough, leading to wear and tear and a short service life.
Innovation Solution
A composite garden hose design comprising a first tubular part made of an elastic material, a second tubular part with a corrugated structure made of plastic or rubber, and a third tubular part made of fabric, with metal fasteners connecting the ends, or a design with a spiral metal tubular part and fabric protection, using a specific manufacturing process involving extrusion and knitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-material hose is used, then the manufacturing process is simple, but the toughness and durability are insufficient
Solution Approach 1:
The patent applies composite materials by combining three different materials: an elastic material for the inner tubular part, a plastic or rubber material for the middle tubular part, and a fabric material for the outer protective layer. This multi-material construction resolves the contradiction by providing both enhanced durability through material properties and a still-feasible manufacturing process using sequential extrusion and knitting
2Reliability
If a multi-layer composite structure is used, then the toughness and wear resistance are improved, but the device complexity increases
Solution Approach 1:
The hose is segmented into three distinct functional layers: an inner elastic tubular part for flexibility and liquid transport, a middle plastic/rubber tubular part with corrugated structure for strength and expansion control, and an outer fabric layer for protection. This segmentation provides enhanced toughness while maintaining manufacturing feasibility through specialized equipment for each layer
Solution Approach 2:
The structure follows a nested configuration where the elastic inner tubular part is surrounded by the plastic/rubber middle tubular part, which in turn is surrounded by the fabric outer layer. This nested arrangement achieves complex protective functions through layered construction while allowing systematic manufacturing through sequential processing
3Ease of operation
If the first tubular part is made of elastic material, then the flexibility is improved, but the hardness is lower making it more susceptible to damage
Solution Approach 1:
Different parts of the hose are assigned different material properties according to their functional requirements: the inner elastic layer provides flexibility for ease of operation, while the middle plastic/rubber layer with higher hardness provides strength and damage resistance. This local differentiation resolves the contradiction by optimizing each layer's properties for its specific function
Data Source
AI summary
A composite garden hose comprises a pipe body, a first connector and a second connector, wherein, the pipe body comprises a first tubular part, a second tubular part and a third tubular part; the hardness of the first tubular part is lower than that of the second tubular part; the hose further comprises a first connector and a second connector, and the pipe body is connected with the first connector and the second connector.