Self-Cleaning Powder Cosmetic Case With Conforming Sifter Seal
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Solution Overview
Problem
Existing cosmetic powder cases suffer from uncontrolled dispersion of powder during transport and use, leading to cleanliness issues and difficulty in cleaning the sifter, with previous solutions being complex, expensive, or ineffective.
Innovation Solution
A case design featuring a sifter with an elastically deformable membrane that conforms to the sifter's shape during closure, allowing for sealed closure and effective cleaning by rubbing the sifter clean during closure, using a deformable seal with relief elements to prevent powder dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a sponge is placed above the sifter to capture dispersed cosmetic product, then powder dispersion during transport is limited, but the sponge creates a suction-cup effect that makes it impossible to open the case without spilling powder
Solution Approach 1:
The harmful suction-cup effect is eliminated by removing the sponge entirely and replacing it with a membrane that allows controlled air passage, extracting the problematic sealing mechanism while retaining the protective function
Solution Approach 2:
A membrane with selective permeability is introduced as an intermediary between the cavity and external environment, allowing air to pass through while preventing powder dispersion, thus mediating between sealing and breathing functions
2Object-affected harmful factors
If a rigid plug is used to cover the sifter in closed position, then powder dispersion is prevented, but the plug does not allow the sifter to be cleaned by reintroducing powder
Solution Approach 1:
The static rigid plug is replaced with a dynamic membrane that can deform and flex, allowing it to adapt between sealed closure position and cleaning position, enabling both protection and accessibility functions
Solution Approach 2:
The membrane's physical state is changed from rigid to flexible, altering its properties to enable both tight sealing when closed and easy deformation when cleaning is required, thus resolving the contradiction between protection and accessibility
3Ease of operation
If the contact face of the membrane is made convex, then air can enter the cavity during unscrewing before the seal engages, but the membrane must be sufficiently elastic to conform to the sifter surface
Solution Approach 1:
A flexible membrane is used instead of rigid structures, allowing the contact face to conform to the sifter surface through elastic deformation while maintaining sealing integrity and enabling controlled air passage during operation
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 design effectively prevents powder dispersion during transport and use, ensures cleanliness, and allows easy cleaning of the sifter without suction, providing a user-friendly and hygienic cosmetic product container.
Implementation Method 1
a lateral section elastically deformable in an axial direction
Implementation Method 2
the contact face of the membrane is elastically deformable in flexion so that the contact face conforms to the shape of the sifter
Data Source
AI summary
The invention relates to a case for a powder cosmetic product comprising:a base comprising a cavity opening out axially through an opening into a bowl;a sifter arranged in the opening;a closing cover which is intended to be screwed onto the base between a fully unscrewed position and a fully screwed position in which it is axially brought closer to the opening;a seal attached to the cover and comprising a membrane that comprises a contact face over the entire surface of the sifter; characterised in that the contact face of the membrane is elastically deformable in flexion so that the contact face conforms to the shape of the sifter when the cover is screwed on, the contact face having relief elements.