Composite Garden Hose Structure for Wear and Expansion Control
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Solution Overview
Problem
Existing garden hoses lack sufficient toughness, durability, and are prone to wear and damage, leading to a short service life.
Innovation Solution
A composite garden hose design comprising a first tubular component made of elastic materials like PVC, PE, or PP, a second tubular component with a corrugated structure made of PP or PVC, and a third tubular component woven from filaments such as polyester or nylon, with specific dimensions and thicknesses to enhance durability and toughness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing single-material garden hoses are used, then they are simple in structure and easy to manufacture, but they lack sufficient toughness and durability
Solution Approach 1:
The patent applies composite materials by combining three different tubular components with distinct material properties: the first tubular component uses elastic materials (PVC, PE, or PP) for flexibility; the second tubular component uses rigid materials (PP or PVC) with corrugated structure for strength and expansion control; the third tubular component uses woven filaments (polyester, spandex, or nylon) for durability and protection. This multi-material composite structure resolves the contradiction by achieving superior toughness and durability while maintaining manufacturing feasibility through established extrusion and weaving processes.
Solution Approach 2:
The patent implements the nesting principle by arranging the three tubular components in a concentric configuration where the first tubular component is positioned centrally, the second tubular component surrounds it, and the third tubular component encases the second. This nested structure allows each layer to contribute its specific properties (elasticity, rigidity, protection) while maintaining a compact overall form, thereby improving strength without excessive structural complexity.
2Reliability
If existing garden hoses are used, then they are simple to manufacture, but they are prone to wear and damage with short service life
Solution Approach 1:
The patent uses composite materials to enhance reliability and service life. The first tubular component's elastic material provides resistance to cracking and breaking; the second tubular component's corrugated rigid structure provides wear resistance and structural integrity; the third tubular component's woven filament layer provides additional protection against abrasion and damage. This composite construction significantly extends service life compared to single-material hoses.
Solution Approach 2:
The patent applies local quality by assigning different material properties to different layers based on their specific functions: the innermost layer uses elastic materials optimized for flexibility and crack resistance; the middle layer uses rigid corrugated materials optimized for wear resistance and structural support; the outermost layer uses woven filaments optimized for abrasion protection. Each layer's material selection is locally optimized for its specific protective function, achieving superior overall reliability.
3Productivity
If the second tubular component has a larger outer diameter to reduce constriction, then liquid flow is improved, but expansion control becomes more difficult
Solution Approach 1:
The patent applies local quality by creating a corrugated structure in the second tubular component with varying local geometries. The crests provide expansion space for liquid flow, while the valleys provide structural support and constraint. This local variation in geometry allows the component to simultaneously accommodate high flow rates and maintain controlled expansion characteristics.
Solution Approach 2:
The patent uses curvature in the corrugated structure of the second tubular component. The alternating crests and valleys create a three-dimensional curved geometry that provides radial expansion capacity during liquid flow while maintaining axial structural stability. This curved structure allows the hose to handle higher flow rates without excessive expansion.
Data Source
AI summary
The present disclosure relates to a composite garden hose, comprising a hose body, a first connector and a second connector. The hose body sequentially comprises, from the inside out, a first tubular component made of an elastic material, a second tubular component with a corrugated structure and a third tubular component made of a fabric material, collectively achieving water conveyance, expansion limitation and protective functions.