Cosmetic Applicator Ball-Detent Tip Adjustment for Limited Mobility
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Solution Overview
Problem
Cosmetic applicators with directional applicator tips can be challenging for users with limited arm/hand mobility to maintain optimal application angles, especially when applying cosmetics like lip gloss, as they require precise directional control.
Innovation Solution
An adjustable cosmetic applicator with a rotating element and detents allows users to adjust the applicator tip's direction without fully rotating the applicator, using a locking mechanism to secure the desired angle, enabling easier application for users with limited mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the applicator tip is made directional for precise cosmetic application, then the application precision is improved, but the ease of operation deteriorates for users with limited arm/hand mobility
Solution Approach 1:
The applicator is divided into functionally independent segments: a fixed handle and a rotateable chamber containing the applicator tip. This segmentation allows the tip orientation to be adjusted independently from the handle position, enabling users with limited mobility to achieve precise application angles without requiring full arm rotation or complex hand movements.
Solution Approach 2:
The chamber is designed to rotate independently around the stem axis, transforming the static directional applicator into a dynamic system. Users can adjust the applicator tip's orientation on-the-fly by rotating the chamber, maintaining precise application capability while adapting to different user needs and application scenarios without repositioning the entire applicator.
2Adaptability or versatility
If the applicator tip can be adjusted to different angles, then the adaptability is improved, but the device complexity increases due to additional rotating and locking mechanisms
Solution Approach 1:
The locking mechanism is segmented into discrete detent positions within the chamber, each corresponding to a specific applicator tip orientation. This segmentation provides multiple predetermined angles for precise cosmetic application while keeping the mechanism simple and easy to manufacture, balancing adaptability with structural simplicity.
Solution Approach 2:
A ball detent mechanism acts as an intermediary between the rotating chamber and the handle. The ball engages with detents in the chamber wall to lock the chamber at specific rotation positions, providing reliable angle retention without requiring complex locking systems. This intermediary mechanism achieves high adaptability through simple mechanical means.
3Ease of operation
If the chamber and handle rotate independently, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The applicator is segmented into an independent rotating chamber and a fixed handle, allowing the chamber to rotate without moving the entire applicator. This segmentation enables users with limited mobility to adjust the applicator tip orientation using only finger or wrist movements on the chamber, while the handle remains stationary and easy to hold.
Solution Approach 2:
The ball detent mechanism serves as an intermediary that couples the chamber rotation to the handle while allowing independent rotation. The ball engages with detents to lock the chamber at desired angles while permitting smooth rotation between detents, providing ease of operation without requiring complex rotational joints or actuators.
Data Source
Figure 1A~1B
Figure 1C
Figure 2A~2B
AI summary
An adjustable cosmetic applicator includes a stem; an applicator tip attached to a first end of the stem; a base attached to a second end of the stem, the base including a locking device disposed at a first end of the base, the locking device including a ball; a handle including a first end, the first end of the handle including a plurality of detents configured to receive the ball; and a chamber rotateably coupled to the handle, the chamber including a hollow cavity configured to receive the base inserted therein, the first end of the base being disposed proximal to the first end of the handle, wherein the chamber and the handle are configured to rotate independently around a rotation axis through a center of the chamber and the handle.