Rotatable Brush Holder in Cosmetic Powder Case
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Solution Overview
Problem
Cosmetic powder cases lack effective brush storage solutions, leading to accidental removal and increased mold costs due to complex designs.
Innovation Solution
A cosmetic powder case with a rotatable brush holder on the cap, featuring a brush insertion part with a tension piece for secure storage and easy retrieval, simplifying the storage structure and reducing mold costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cosmetic powder case includes a brush storage compartment, then brush storage capability is improved, but the device complexity increases and mold costs increase
Solution Approach 1:
The brush holder is nested within the cap assembly, utilizing the cap's internal space for brush storage. The cap serves dual purposes: closing the powder compartment and housing the brush holder, thereby integrating multiple functions into a single structure without increasing overall device complexity
Solution Approach 2:
The cap is designed with multi-functionality, serving both as a closure for the powder compartment and as a container for the brush holder. This universal design allows the same component to fulfill multiple roles, adding brush storage capability without requiring separate dedicated structures
2Reliability
If a complex brush storage structure is used, then brush storage security is improved, but mold costs increase
Solution Approach 1:
The brush holder incorporates a rotatable design that allows it to pivot between different positions. This dynamic mechanism provides secure storage through rotational locking while maintaining manufacturing simplicity, as the rotation feature can be achieved with basic mechanical components rather than complex molded structures
Solution Approach 2:
The tension piece is pre-positioned within the brush holder structure to automatically engage with the brush when inserted. This preliminary positioning ensures secure storage without requiring complex active mechanisms, as the security feature is built into the basic structure and activates automatically upon brush insertion
3Ease of operation
If a rotatable brush holder is used, then brush access convenience is improved, but device complexity increases
Solution Approach 1:
The brush holder is designed to rotate freely within the cap, allowing users to easily access the brush by simply rotating the holder. This dynamic rotational movement provides convenient brush access while maintaining mechanical simplicity, as the rotation feature requires minimal structural complexity and can be achieved with basic clearance design
Data Source
AI summary
A cosmetic powder brush is provided. A brush holder is provided with a brush insertion part in which a brush is stored, and is rotatably coupled to a cap. The brush is stored in the brush insertion part, and then, the brush holder is rotated through a certain angle to prevent a removal of the brush in a closed state, and the brush holder is rotated through the certain angle to an original position thereof to use the brush, and the brush is taken out in an open state. The brush holder is rotatably installed on the cap, and the brush is inserted and stored in the brush holder, thereby effectively preventing the brush from being lost.