Automatic Sealing Module for Lipstick Case
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Solution Overview
Problem
Existing lipstick cases lack convenience and effectiveness in automatically opening and closing, leading to contamination risks during extraction and retraction of the lipstick, and have complex structures that complicate operation.
Innovation Solution
An automatically opened/closed sealing module with a cylindrical main body, rotational body, piston, and shutter member, featuring slit protrusions, guide protrusions, and an O-ring for airtight sealing, which automatically opens and closes the cover during lipstick extraction and retraction, preventing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cap is used to cover the lipstick protective tube, then the lipstick is protected from contamination, but the structure becomes more complex and operation becomes inconvenient
Solution Approach 1:
The invention merges the cap and the lipstick protective tube into a single integrated structure. The cap is formed as an extension of the protective tube, eliminating the need for separate cap components while maintaining the protection function. This integration resolves the contradiction by reducing structural complexity while preserving contamination protection.
Solution Approach 2:
The protective tube serves multiple functions: it protects the lipstick, acts as a structural support, and integrates the cap function within itself. The unified structure performs both protective and structural roles simultaneously, reducing the number of separate components needed while maintaining reliability.
2Ease of operation
If the cap is automatically opened and closed during lipstick extraction and retraction, then convenience is improved, but the device complexity increases
Solution Approach 1:
The lipstick tube's extraction and retraction motion automatically triggers the cap opening and closing actions. The system uses the existing motion of the lipstick tube to drive the cap mechanism without requiring separate control systems or additional power sources. This self-service approach achieves automatic operation while minimizing added complexity.
Solution Approach 2:
The cap opening action is triggered in advance before the lipstick tube is fully extracted, and the closing action begins before retraction is complete. This preliminary action ensures the cap is already open when needed and begins closing before the tube returns, preventing contamination while maintaining smooth operation.
3Reliability
If the cover opens before lipstick extraction, then contamination is prevented, but interference may occur during extraction and retraction operations
Solution Approach 1:
The cap transition from closed to open state is designed to be dynamic and controlled, moving smoothly along a predetermined path that avoids interference with the lipstick tube. The opening mechanism adjusts the cap's position and orientation dynamically during the extraction process to prevent harmful interference while maintaining contamination prevention.
Data Source
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AI summary
An object of the present invention is to provide a cosmetic case capable of automatically opening and closing a cover which is automatically opened and closed before extraction and retraction of a rod-shaped body such as a lipstick, thereby enhancing a convenience in use. To achieve the above object, the present invention provides an automatically opened/closed sealing module, including: a cylindrical exterior case having a hollow interior; a cylinder housed in the exterior case so that a portion thereof is extracted out and retracted into together with a rod-shaped body; and a shutter member configured to be automatically opened and closed to allow extraction and retraction of the rod-shaped body, wherein the shutter member includes: a link body including a link hook; a cap body formed at a position opposite to the link body and including a cap hook; shutter ledges formed on outer circumferential surfaces of the link body and the cap body with a difference in level to limit a movement of the link body; an inner slit ledge formed in one end of a slit section which is formed by facing the link body and the cap body toward each other, so as to be supported by the cylinder; and a cover rotatably formed through hinge parts integrally connected with the link body and the cap body.