Finger Mascara Elastic Coupling Adaptability
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Solution Overview
Problem
Existing finger mascaras face challenges in accommodating users with different finger sizes, securing the application unit firmly, preventing cosmetic material contamination on unwanted body parts, and ensuring easy coupling and separation of the application unit from the container.
Innovation Solution
A finger mascara design featuring a container with an application unit that includes a finger insertion part surrounded by elastic supporting parts, a stick for applying cosmetic material, and a middle unit for coupling, where the elastic supporting parts can deform to fit various finger sizes, and a wiper to prevent cosmetic material smearing, allowing for secure and convenient use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed size finger insertion part is used, then the structure is simple, but users with different finger thickness cannot use it
Solution Approach 1:
The finger insertion part uses elastic supporting parts that can dynamically deform to accommodate different finger thicknesses. The elastic parts bend and flex to fit various finger sizes, transforming a static fixed structure into a dynamic adaptive one without requiring multiple fixed-size components.
Solution Approach 2:
The elastic supporting parts change their physical state and deformation parameters based on the finger thickness inserted. By allowing the elastic material to deform and adjust its shape, the system adapts to different finger sizes while maintaining a single standardized structure.
2Reliability
If only one elastic supporting part is used, then the device is simple, but the finger and thimble do not fix firmly causing shaking
Solution Approach 1:
The single elastic supporting part is divided into multiple segments or parts that work together to secure the finger. This segmentation allows for better distribution of holding force and improved stability while maintaining relative structural simplicity through modular design.
Solution Approach 2:
Multiple elastic supporting parts are combined to work together in securing the finger firmly. By merging the functions of multiple elastic elements, the system achieves stable fixation without requiring a completely complex mechanical structure.
3Object-affected harmful factors
If the thimble is exposed directly to outside, then the structure is simple, but the outer surface becomes dirty by cosmetic material
Solution Approach 1:
A protective cover or inner lining is introduced as an intermediary element between the thimble and the external environment. This intermediary prevents direct contact between the thimble and cosmetic materials, blocking contamination while maintaining structural simplicity through a straightforward protective layer.
Solution Approach 2:
A flexible protective film or shell is applied to the thimble surface to prevent cosmetic material adhesion. This thin protective layer isolates the thimble from contamination while allowing the overall structure to remain simple and maintain flexibility.
4Reliability
If the thimble is simply rested on the storage box, then the assembly is simple, but the fixing state is unstable and separation is easy
Solution Approach 1:
A coupling mechanism is pre-designed and prepared to automatically engage when the thimble is placed on the storage box. This preliminary action ensures stable fixation upon assembly without requiring complex active control mechanisms, achieving reliable fixing through pre-configured mechanical engagement.
Solution Approach 2:
The coupling mechanism is designed to automatically secure the thimble to the storage box through self-aligning and self-locking features. The system serves itself by using the act of placement to trigger the coupling action, achieving stable fixation without external intervention or complex operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves usability for users with different finger sizes, ensures precise make-up application by securing the application unit firmly, prevents cosmetic material from smearing on unwanted areas, and simplifies the coupling and separation process.
Implementation Method 1
a plurality of elastic supporting parts which are extended upward from the outer cylinder, capable of wrapping around the finger to be inserted into from the upper side, and can be elastically deformed in a direction away from a central axis of the outer cylinder as the finger is inserted into
Data Source
AI summary
Finger mascara includes: a container for containing a cosmetic material; an application unit coupled to the container; and a middle unit for detachably coupling the application unit to the container. The application unit includes: a finger insertion part in which a user can insert a finger from above; an outer cylinder surrounding the periphery of the finger insertion part and having an upward opening; a plurality of elastic supporting parts extending upward from the outer cylinder and capable of wrapping the finger inserted from above and being elastically transformed in a direction away from a central axis of the outer cylinder as the finger is inserted; a stick extending downward from one point of the inner space of the outer cylinder; and a brush for applying cosmetic material by coating the same thereon, wherein a free end of the elastic supporting parts is provided with a tip.