Disposable Mask With Convex Lower Edge For Chin Fit
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Solution Overview
Problem
Conventional disposable masks with pleated designs can cause discomfort for children with round chins due to inadequate fit under the chin, leading to insufficient mouth and nose coverage when trying to reduce the mask's vertical dimension.
Innovation Solution
A disposable mask with a pleated design featuring a convex central part on the lower end edge and pleat portions arranged in an Ω-shaped configuration, along with pleat adjustment means to control extension, ensuring a secure fit under the chin and adequate coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the vertical dimension of the mask body is reduced, then the mask can fit better under the chin, but the coverage of mouth and nose becomes insufficient
Solution Approach 1:
The mask body is divided into multiple pleat portions that can be independently extended. The pleats are folded along extension lines, allowing the central area to extend vertically when needed while maintaining a compact form when folded, thus resolving the contradiction between compact storage/fit and coverage area
Solution Approach 2:
The mask utilizes the third dimension (vertical extension through pleat unfolding) to provide adequate coverage area while maintaining a compact two-dimensional form factor for storage and initial fit. The pleats allow the mask to transition from a compressed state to an extended state, providing sufficient mouth and nose coverage without requiring a permanently large vertical dimension
2Area of stationary object
If the central area of the mask body is extended downward to cover mouth and nose, then coverage is improved, but the mask extends further from chin to throat causing discomfort
Solution Approach 1:
The mask applies different structural qualities to different regions: the central area contains pleat portions that can extend vertically to provide coverage, while the side areas maintain a more compact structure. This localized differentiation allows the central area to extend downward for coverage without the entire mask body extending excessively, preventing discomfort at the throat while maintaining adequate mouth and nose coverage
3Length of moving object
If the mask body is made compact for children with round chins, then fit under chin is improved, but the extension area of pleat portions becomes insufficient
Solution Approach 1:
The mask incorporates dynamic pleat structures that can transition between compressed and extended states. The pleat portions are designed to unfold and extend vertically when needed, providing sufficient coverage area even when the mask body is initially compact. This dynamic capability allows the mask to adapt to different facial sizes and shapes, providing both compact fit for children and adequate extension area when required
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
Provided is a disposable mask which is capable of sufficiently covering the wearer's mouth and nose with a mask body and is capable of fitting an appropriate position under the chin. A mask body (20) of a mask (10) includes a plurality of pleat portions (60) formed by folding a sheet forming the mask body (20) in a pleated shape, and a lower end edge (20b) of the mask body (20) includes a central part (25) being convex upwardly.