Mascara Applicator with Flexible Shaft and Curving Mechanism
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Solution Overview
Problem
Users need to possess two separate mascara applicators, one with a straight brush and one with a curved brush, to achieve different application effects, as existing applicators do not allow for easy conversion between these configurations without direct contact with the brush.
Innovation Solution
A mascara applicator with a hollow, flexible shaft and brush, featuring an elongate flexible connector and actuating means within the grip portion, allowing the brush to be selectively curved or straightened by rotating an adjustment member, utilizing a resilient stiffening tab for configuration change and return.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users possess two separate mascara applicators (one straight, one curved) to achieve different application effects, then the versatility and adaptability are improved, but the device complexity and loss of time increase
Solution Approach 1:
The mascara brush is designed with a flexible shaft that can dynamically change its configuration between straight and curved states. The shaft includes a flexible portion that allows the brush to be bent into a curved configuration and then return to its original straight configuration, enabling one applicator to perform the functions of two separate applicators.
Solution Approach 2:
The physical state of the shaft is changed from rigid to flexible, allowing it to assume different configurations. The flexible portion of the shaft can be bent to change the brush configuration, and the material properties enable it to return to its original shape, providing versatility without requiring multiple applicators.
2Adaptability or versatility
If the shaft and mascara brush are made hollow and flexible with an actuating mechanism, then the adaptability and ease of operation are improved, but the device complexity increases
Solution Approach 1:
The actuating mechanism is nested within the hollow grip portion of the applicator. The flexible shaft is contained within the hollow shaft structure, and the actuating means are housed within the grip portion. This nesting arrangement allows the complex mechanism to be compact and integrated without significantly increasing the overall device complexity.
Solution Approach 2:
The flexible shaft has inherent resilience that allows it to automatically return to its straight configuration after being bent. This self-service property reduces the complexity of the actuating mechanism, as the material's elastic recovery performs part of the work that would otherwise require a complex mechanical system.
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
Enables the user to easily switch between straight and curved brush configurations without touching the brush, facilitating both uniform mascara application and lash curling effects with a single applicator.
Implementation Method 1
the resilient stiffening tab which is integral with the end cap and extends within the mascara brush
Data Source
AI summary
A mascara applicator includes a hollow grip portion connected to which is one end of a shaft, the other end of which carries a mascara brush. The shaft and mascara brush are hollow and the mascara brush is flexible. An elongate flexible connector extends within the shaft and the mascara brush. A first end of the connector is fixed with respect to the distal end of the mascara brush and the second end of the connector is fixed with respect to actuating means within the grip portion. The actuating means are selectively operable to move the second end of the connector in the direction away from the mascara brush, thereby applying a force to the distal end of the mascara brush and causing it to adopt a curved configuration.