Bra Shoulder Strap Composite Structure for Pressure Distribution
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Solution Overview
Problem
Existing bra shoulder straps have poor load-bearing strength, leading to pressing marks and discomfort on the shoulders after long-term wear.
Innovation Solution
A bra shoulder strap design featuring an outer fabric layer, an inner fabric layer, and a sandwich piece between them, with the sandwich piece providing enhanced load-bearing strength and comfort through a poroid structure with high resilience and a layered construction that disperses pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing bra shoulder straps use two layers of fabric, then the structure is simple, but the load-bearing strength is poor
Solution Approach 1:
The patent applies composite materials by combining three distinct layers: an outer fabric layer, an inner fabric layer, and a sandwich piece with porous structure. This composite construction enhances the load-bearing strength of the shoulder strap while distributing mechanical stresses across different material layers, each optimized for specific functions.
Solution Approach 2:
The sandwich piece with porous structure is strategically positioned between the inner and outer fabric layers at the shoulder contact area. This local enhancement provides improved load-bearing capacity and comfort precisely where needed, without unnecessarily complicating the entire strap structure.
2Object-affected harmful factors
If existing bra shoulder straps use two layers of fabric, then the manufacturing process is simple, but pressing marks are caused on the shoulder after long-term wear
Solution Approach 1:
The sandwich piece incorporates a porous structure that provides cushioning and reduces pressure concentration on the shoulder. This porous layer acts as a stress-distributing element that prevents pressing marks while maintaining breathability and comfort during prolonged wear.
Solution Approach 2:
The three-layer composite construction combines different material properties: the outer fabric layer provides durability, the inner fabric layer contacts the skin, and the sandwich piece with porous structure provides pressure distribution. This combination effectively eliminates pressing marks while managing the complexity through functional differentiation.
3Strength
If the sandwich piece is added between fabric layers, then the load-bearing strength is enhanced, but the device complexity increases
Solution Approach 1:
The patent implements a three-layer composite structure where each layer serves a specific function: the outer fabric layer for structural integrity, the sandwich piece with porous structure for load distribution and comfort, and the inner fabric layer for skin contact. This composite approach enhances load-bearing strength while managing complexity through clear functional differentiation of each layer.
Data Source
AI summary
Disclosed are a bra shoulder strap and a bra. The bra shoulder strap includes an outer fabric layer, an inner fabric layer and a sandwich piece provided between the outer fabric layer and the inner fabric layer. The outer fabric layer, the sandwich piece and the inner fabric layer are stacked in sequence.