Pull strap for inflatable product and the inflatable product
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Solution Overview
Problem
Traditional pull straps in inflatable products, made from PVC or PU sheets, have low tensile strength, leading to stretching and deformation, and are heavy, increasing logistics costs and production complexity.
Innovation Solution
A pull strap design featuring a thermoplastic flexible sheet material body with a hollow portion, mesh cloth with through holes, and an annular fixing piece, which enhances tensile strength while reducing weight and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional pull straps are made from whole piece PVC or PU sheet, then the pull strap has sufficient tensile strength, but the overall weight of the inflatable product increases
Solution Approach 1:
The pull strap is divided into multiple segments: a lightweight hollow body portion and multiple reinforcement portions made of mesh cloth with high tensile strength. This segmentation allows the strap to achieve sufficient tensile strength through the mesh reinforcement while keeping the overall weight low by using a hollow structure for the body portion.
Solution Approach 2:
The pull strap combines different materials with complementary properties: the hollow body portion provides lightweight structure, while the mesh cloth reinforcement portions provide high tensile strength. This composite structure resolves the contradiction between weight and strength by integrating materials that excel in different properties.
2Shape
If traditional pull straps are made from PVC or PU sheets, then the pull strap provides structural support, but the pull strap stretches and deforms due to low tensile strength
Solution Approach 1:
The pull strap uses a composite structure where mesh cloth reinforcement portions are integrated into the hollow body portion. The mesh cloth provides high tensile strength to prevent stretching and deformation, while the hollow body maintains the overall structural shape. This composite approach resolves the contradiction between shape maintenance and tensile strength.
3Strength
If traditional pull straps are made from solid PVC or PU sheets, then the pull strap has sufficient strength, but production operations become less convenient for staff
Solution Approach 1:
The pull strap is segmented into a hollow body portion and separate mesh cloth reinforcement portions. This segmentation makes the components lighter and easier to handle during production operations, while the reinforcement portions provide the necessary tensile strength. The modular structure improves ease of manufacture compared to handling large solid sheets.
4Strength
If traditional pull straps are made from solid material, then the pull strap has high tensile strength, but the pull strap occupies more space and increases packaging volume
Solution Approach 1:
The pull strap uses a hollow body portion that significantly reduces material volume compared to solid construction, while mesh cloth reinforcement portions are added only where needed for tensile strength. This segmented approach minimizes overall packaging volume while maintaining necessary strength properties.
Solution Approach 2:
The hollow body portion acts as a flexible shell structure that provides the necessary form factor with minimal material usage. When combined with thin mesh cloth reinforcement portions, this creates a lightweight, compact pull strap that occupies less packaging space while maintaining tensile strength.
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 improved pull strap design achieves a 52% weight reduction, increases tensile strength, prevents deformation and breakage, and enhances breathability during inflation and deflation, thus improving the durability and efficiency of inflatable products.
Implementation Method 1
When external force is applied to the pull strap, the mesh cloth, with its excellent tensile strength and low elongation, can effectively distribute stress
Implementation Method 2
The pull strap body and the annular fixing piece are made of thermoplastic flexible sheet material
Data Source
AI summary
A pull strap for an inflatable product and the inflatable product, comprising a pull strap, mesh cloth, and an annular fixing piece. The pull strap has a through hollow portion, and the mesh cloth has multiple through holes. The mesh cloth is sandwiched between the edge of the hollow portion of the pull strap and the annular fixing piece. The hollow portion reduces weight, saves packaging and logistics costs, and facilitates production and assembly by staff. The mesh cloth and annular fixing piece significantly improve tensile strength, effectively prevent deformation and breakage, and enhance durability and reliability. The mesh cloth's through holes increase airflow speed during inflation or deflation, improve breathability, and reduce waiting time for users. When external force is applied, the mesh cloth distributes stress, effectively preventing deformation or damage to the pull strap, thereby improving the product's overall functionality and competitiveness.