Replaceable Lipstick Container Using Mechanical Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional lipstick containers are not environmentally friendly as they are designed to be discarded after the lipstick is consumed, and the integral formation of the shaft and base using ultrasonic welding or adhesive further contributes to environmental harm.
Innovation Solution
A lipstick container design featuring a cap, lipstick carrier, joining device, locking device, and base with specific geometries and components that allow for easy replacement of the lipstick, including grooves, ridges, protuberances, and a washer for enhanced locking and reduced wear, enabling the container to be reused and manufactured more efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lipstick container is designed to be discarded after use, then the simplicity of the container is maintained, but environmental harm increases due to waste
Solution Approach 1:
The lipstick container is divided into separable components: a reusable container body and a replaceable lipstick cartridge. The cartridge can be detached and replaced when consumed, while the container body remains in use. This segmentation allows the container structure to be reused multiple times, reducing waste and environmental harm while maintaining manufacturing simplicity.
2Strength
If the shaft and base are formed integrally by ultrasonic welding or adhesive, then the structural strength is improved, but environmental harm increases and manufacturing complexity increases
Solution Approach 1:
The shaft and base are designed as separate components that connect through mechanical engagement features (such as ridges and grooves) rather than being formed integrally by welding or adhesive. This segmentation eliminates the need for harmful bonding processes while maintaining structural strength through precise mechanical interlocking, thereby reducing environmental harm and simplifying manufacturing.
3Strength
If the shaft and base are formed integrally by ultrasonic welding or adhesive, then the structural strength is improved, but manufacturing cost increases and production efficiency decreases
Solution Approach 1:
The shaft and base are designed as separate components with mechanical engagement features that allow for easy assembly and disassembly. This eliminates time-consuming welding or adhesive bonding processes, significantly increasing production efficiency and reducing manufacturing costs while maintaining structural strength through precise mechanical interlocking.
4Device complexity
If the lipstick is consumed in the conventional container, then the container structure remains simple, but the container cannot be reused and useful life is limited
Solution Approach 1:
The container is segmented into a permanent container body and a consumable lipstick cartridge. The cartridge can be removed and replaced when the lipstick is consumed, allowing the container body to be reused multiple times. This simple segmentation design extends the useful life of the container structure without adding significant complexity.
Data Source
AI summary
A lipstick container with replaceable lipstick includes a hollow cap including inner grooves; a lipstick carrier partially disposed in the cap and including a rotational seat, an axial snapping hole in the rotational seat, two opposite snapping members between the snapping hole and the rotational seat, two recesses each disposed between the snapping members, two axial projecting members each formed with the snapping member, and ridges on an outer surface; a joining device including an axial well, end projections, an annular protrusion, and inner troughs; a locking device including a seat having first and second annular surfaces; an axial shaft; two opposite protuberances; a toothed member on the second annular surface; and an axial projecting element; and a base including a grooved member, a toothed element on a bottom, and an axial through hole.