Packaging Container With Rotatable Stopper for Self-Aligning Applicators
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Solution Overview
Problem
Cosmetic applicators in packaging containers require precise alignment for insertion, leading to inconvenient operation and potential material waste and contamination.
Innovation Solution
A packaging container design featuring a rotatable inner stopper and applicator structure, allowing the application portion to drive the inner stopper for automatic alignment with scraping holes, eliminating the need for manual alignment and reducing material residue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the applicator is designed with a sheet-like application portion for uniform cosmetic application, then the cosmetic material can be applied uniformly without getting fingers dirty, but the applicator requires precise alignment with the scraping holes in the inner stopper during insertion, leading to inconvenient operation
Solution Approach 1:
The inner stopper is designed to rotate dynamically during the insertion process. When the applicator is inserted at any angle, the inner stopper automatically rotates to align its scraping holes with the applicator, transforming a static alignment problem into a dynamic self-adjusting process. This resolves the contradiction by maintaining the precise scraping function while eliminating the need for manual alignment.
Solution Approach 2:
The system performs self-alignment through the rotational mechanism of the inner stopper. Instead of requiring the user to manually align the applicator with the scraping holes, the inner stopper automatically adjusts its position during insertion to achieve proper alignment. This self-service mechanism eliminates the operational difficulty while preserving the uniform application capability.
2Manufacturing precision
If the applicator requires fixed-direction insertion into the inner stopper, then the scraping holes can effectively scrape off excess cosmetic material, but the operation becomes inconvenient and time-consuming due to alignment requirements
Solution Approach 1:
The inner stopper transitions from a static component requiring precise manual alignment to a dynamic component that automatically rotates during insertion. This rotational movement occurs naturally as the applicator is inserted, eliminating the need for users to spend time carefully aligning the components while maintaining effective scraping of excess cosmetic material.
Solution Approach 2:
The rotational alignment mechanism is designed to occur automatically during the insertion process itself, rather than requiring a separate alignment step before insertion. The inner stopper pre-adjusts its position as it rotates during the act of inserting the applicator, thereby eliminating preliminary alignment time while ensuring proper scraping precision.
3Area of moving object
If the application portion is made wider to improve cosmetic coverage, then more cosmetic material can be applied at once, but the connecting portion must be longer to extend beyond the lid assembly, increasing the overall applicator length
Solution Approach 1:
The patent utilizes the radial dimension of the lid assembly as a reference for determining the minimum length of the connecting portion. By specifying that the connecting portion length L1 should be at least 0.5 times the radial size L2 of the lid assembly (or at least equal to the radius R), the design optimizes the balance between application area and overall length by leveraging the spatial relationship in multiple dimensions rather than simply extending length linearly.
Data Source
AI summary
A packaging container includes a lid assembly, an applicator, an outer stopper, an inner stopper, and a bottle, where the applicator includes a mounting portion, a connecting portion, and an application portion; two ends of the connecting portion are respectively fixedly connected to the mounting portion and the application portion; the mounting portion is fixedly connected to the lid assembly; the lid assembly covers a bottle mouth of the bottle; the outer stopper is fixedly provided at the bottle mouth of the bottle; the inner stopper is rotatably provided in the outer stopper; a first scraping hole and a second scraping hole communicating with each other are formed in the inner stopper; the first scraping hole is configured to scrape materials on the connecting portion; the second scraping hole is configured to scrape materials on the application portion; and the application portion can drive the inner stopper to rotate.