Push-Type Refillable Cosmetic Container Separation Mechanism
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Solution Overview
Problem
Conventional refillable cosmetic containers face difficulties in separating the inner and outer containers after use, leading to increased manufacturing costs, reduced productivity, and poor usability due to complex lock structures and interference fitting, which results in environmental pollution and economic inefficiency.
Innovation Solution
A push-type refillable cosmetic container design featuring a press groove on the outer container's stepped part that allows the inner container to be easily separated by lifting its upper portion when the press groove is pushed, forming a gap and enabling simple refilling and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference fitting and coupling protrusions are used to securely couple the inner container to the outer container, then the reliability of the coupling is improved, but the device complexity increases and the ease of separation deteriorates
Solution Approach 1:
The coupling mechanism is segmented into two distinct functional zones: an interference fitting region for secure coupling and a press groove region for easy separation. The press groove creates a localized separation point that allows the inner container to be detached without compromising the overall coupling reliability during use.
Solution Approach 2:
The press groove acts as an intermediary element between the interference fitting and the separation action. When pressure is applied to the press groove, it creates a gap that serves as a mediator to initiate the separation process, allowing the inner container to be easily removed from the outer container.
2Reliability
If lock means are provided to couple and lock the inner container to the outer container, then the coupling reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The complex lock mechanism is extracted and replaced with a simpler press groove structure. The essential function of securing the inner container is achieved through the interference fitting, while the press groove provides a simplified means for separation without requiring additional lock components.
Solution Approach 2:
Instead of providing locking mechanisms throughout the entire coupling interface, the press groove is localized to a specific region on the outer container. This localized approach maintains coupling reliability where needed while simplifying the overall structure by eliminating unnecessary locking components in other areas.
3Reliability
If the inner container is tightly coupled to the outer container through interference fitting, then the coupling reliability is improved, but the ease of manufacture and productivity deteriorate
Solution Approach 1:
The press groove is pre-formed on the outer container during manufacturing, creating a built-in separation mechanism that facilitates quick assembly and disassembly. This preliminary action eliminates the need for complex locking operations during assembly, thereby improving productivity while maintaining coupling reliability.
Data Source
AI summary
Proposed is a refillable cosmetic container to which an inner container containing cosmetic contents is coupled. The inner container is inserted into an outer container so that a coupling part (22) provided on the upper portion of the inner container (20) is coupled to the stepped part (12) provided on the upper portion of the outer container (10), and a press groove (15) is formed on the first side of the stepped part of the outer container to be recessed downward, so the inner container can be simply separated by the gap formed as the upper portion of the second side of the inner container is lifted upward from the outer container by downwardly pushing the press groove of the outer container on the first side of the upper portion of the inner container, thus making it convenient to refill and use the inner container.