Lipstick Case Sealing Mechanism for Air Infiltration Prevention
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Solution Overview
Problem
Conventional lipstick cases fail to prevent lipstick deterioration by allowing air exposure when not in use, leading to inaccuracies in lipstick positioning and external air infiltration.
Innovation Solution
A lipstick case design featuring a cylindrical upper cover, rotatable body, guide member, and air vent mechanism that seals the lipstick when not in use, preventing air from entering and ensuring the lipstick remains protected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lipstick case is designed with a rotatable body and movable lipstick case for easy application, then the ease of operation is improved, but the reliability of lipstick positioning deteriorates due to shaking during carrying causing inaccurate positioning and potential insertion out of the lipstick case
Solution Approach 1:
The patent implements preliminary action by providing a guide groove in the rotatable body and a guide protrusion on the lipstick case that engage before use. This pre-established guiding structure ensures the lipstick case remains accurately positioned within the rotatable body during carrying and movement, preventing shaking from causing misalignment or ejection, while still allowing controlled rotation for application.
2Ease of operation
If the lipstick case is designed with an open structure for easy access, then the ease of operation is improved, but the lipstick deteriorates due to contact with air when not in use
Solution Approach 1:
The patent applies this principle by incorporating a seal member (elastic sealing ring) between the lipstick case and the main body. This flexible sealing element creates an airtight barrier that prevents air from entering and deteriorating the lipstick when not in use, while still allowing the lipstick case to move up and down and be accessed easily during application.
3Duration of action of stationary object
If the lipstick case allows air flow for ventilation, then the durability of components is improved, but external air flows into the lipstick case causing lipstick deterioration
Solution Approach 1:
The patent implements this principle by creating a sealed internal environment using the seal member between the lipstick case and main body. This sealing mechanism excludes external air (creating an inert protective atmosphere) around the lipstick, preventing oxidation and deterioration, while the overall case structure remains durable through proper material selection and joint design.
Data Source
AI summary
A lipstick case is proposed, such that it is advantageous in that not only is outer air prevented from infiltrating into the lipstick case when the lipstick is not used, but any contact between the lipstick and air is also suppressed, thereby preventing degradation of the lipstick.