Rotating Outer Cap Mechanism for Scalp Care Liquid Applicator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid chemical applicators lack a simple and effective mechanism for users to control the discharge of liquid chemicals, leading to potential leakage and inefficient application.
Innovation Solution
A liquid chemical applicator design featuring a container, inner cap, and outer cap, where the outer cap is rotatably and movably coupled to the inner cap, allowing for easy blocking and opening of the discharge pathway through a cam groove and guide protrusion mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple liquid chemical applicator is used, then the device structure is simple, but the user cannot easily control the discharge or blocking of liquid chemical
Solution Approach 1:
The outer cap is designed to be rotatable relative to the inner cap, transforming a static structure into a dynamic one. This rotation enables the plug portion to move between blocking and opening positions, allowing users to easily control liquid chemical discharge without complex mechanisms
Solution Approach 2:
The outer cap serves multiple functions: it acts as a discharge opening, a blocking mechanism, and a user interface all in one component. The rotation mechanism provides both discharge control and leakage prevention functions, reducing the need for separate components
2Reliability
If the discharge pathway is always open, then the liquid chemical can be easily applied, but leakage occurs when not in use
Solution Approach 1:
The plug portion is preliminarily positioned to block the discharge hole when the outer cap is in its initial position, preventing leakage before use. The user simply needs to rotate the outer cap to the opening position to access the liquid chemical, combining leakage prevention with ease of operation
Solution Approach 2:
The plug portion acts as an intermediary element between the liquid chemical reservoir and the external environment. It can be positioned to either block or open the discharge pathway, providing reliable leakage prevention while maintaining easy accessibility through simple rotation
3Reliability
If a complex valve mechanism is added to control discharge, then leakage is prevented, but the device complexity increases
Solution Approach 1:
The outer cap itself serves as the control mechanism through its rotation. The plug portion automatically moves between blocking and opening positions based on the rotation angle, eliminating the need for separate valve mechanisms or complex control systems
Solution Approach 2:
The blocking function and discharge control are merged into the rotation motion of the outer cap. The same rotational movement that opens the discharge pathway also positions the plug portion, combining multiple functions into a single simple action
Data Source
AI summary
A liquid chemical applicator used for scalp care is provided. The liquid chemical applicator includes a container accommodating liquid chemical, an inner cap coupled to the container, and an outer cap rotatably and movably coupled to the inner cap. The inner cap includes a bush portion coupled to an outlet hole of the container along a central axis of the outlet hole. The outer cap includes a plug portion blocking and opening the bush portion, and further discharges the liquid chemical introduced through the bush portion. The outer cap blocks or opens the bush portion by rotation in first and second rotation directions centered on the central axis and by movement in first and second movement directions along the central axis.