Brassiere Cup Segmentation to Prevent Upward Sliding
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Solution Overview
Problem
Conventional women's undergarments with brassiere cups experience breast displacement and spillage due to movement, as the pad or lift-up piece is constrained by the strap connections, leading to deformation and exposure.
Innovation Solution
The design features brassiere cups with a lower edge sewn only to the cup cover piece, allowing the cup to move independently while maintaining contact with the breast, and includes lift-up pieces that support from below to prevent lateral separation and enhance shaping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the pad or lift-up piece is connected to the strap at the underarm-side upper portion, then the pull-up function is improved, but the cup moves upward with strap movement causing breast spillage
Solution Approach 1:
The brassiere cup is segmented from the cup cover piece, with only the lower edge of the cup sewn to the lower edge of the cover piece while the upper edge and side edges remain free. This segmentation allows the cup to move independently from the strap, preventing breast spillage while maintaining the pull-up function through the lift-up piece connected to the strap.
Solution Approach 2:
The lift-up piece acts as an intermediary between the strap and the brassiere cup. It is connected to both the strap (at its upper portion) and the lower edge of the cup (replacing the pad connection), mediating the force transmission while allowing the cup to maintain independent movement capability.
2Strength
If the pad is sewn to the support panel and connected to the strap, then structural support is improved, but the cup is constrained and cannot maintain close contact with the breast during movement
Solution Approach 1:
The brassiere cup is segmented from the cup cover piece and support structure, with only the lower edge connection maintained. This allows the cup to move freely and adapt to breast movement while the support panel and straps provide overall structural support.
Solution Approach 2:
The cup is designed to be dynamic rather than fixed, allowing it to move independently to maintain close contact with the breast during body movement. The free upper edge and side edges enable this dynamic adaptation while the lower edge connection maintains structural integrity.
3Stability of the object's composition
If the entire cup edge is sewn to the cup cover piece, then the cup position is stabilized, but the cup cannot move independently causing breast displacement
Solution Approach 1:
The connection between the cup and cup cover piece is segmented to involve only the lower edge of the cup. The upper edge and side edges remain free, creating a partial connection that provides minimal stability while allowing the cup to move independently to maintain reliable breast contact.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Provided is a woman's undergarment that prevents brassiere cups for receiving breasts from sliding upward and prevents the breasts from spilling out of the brassiere cups, even if the wearer moves her body in any direction. A woman's undergarment (A) with brassiere cups (1) includes the brassiere cups (1), cup cover pieces (20), a support panel (10), side belts (11) and (12), and straps (30). The cup cover pieces (20) are each disposed to cover an outer surface of the brassiere cup (1) and separated from the outer surface of the brassiere cup (1). Only a lower edge (2) of the brassiere cup (1) is sewn to a lower edge (22) of the cup cover piece (20).