Liquid hand wash container
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Solution Overview
Problem
Existing liquid hand wash containers require significant force and a long press stroke for operation, making them inconvenient, especially for people with disabilities, and are prone to damage and high in cost.
Innovation Solution
A liquid hand wash container design featuring a compression rod module with thrust arc plates and a compression rod column that reduces press force and stroke length, utilizing a geometric shape optimized through vector analysis to facilitate efficient liquid discharge with a compact and cost-effective structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring-based pressing mechanism is used in existing liquid hand wash containers, then the liquid discharge function is achieved, but the press force required is large and the press stroke is long, making operation inconvenient
Solution Approach 1:
The thrust arc plate uses an arc-shaped curved surface instead of a straight or flat surface. When the pressing plate moves downward, it pushes the thrust arc plate which in turn pushes the compression rod along the arc trajectory. This curved path converts part of the pressing force into a more efficient directional force, reducing the required press force and stroke while achieving the same liquid discharge effect
Solution Approach 2:
The compression rod module uses a quadrilateral linkage mechanism where the compression rod column and two compression rods form a geometric structure. By optimizing the geometric parameters of this linkage, the mechanism achieves sufficient liquid discharge with a shorter press stroke and reduced press force compared to traditional spring mechanisms that require full compression
2Ease of operation
If a spring-based pressing mechanism is used in existing liquid hand wash containers, then the liquid discharge function is achieved, but the press stroke is long making operation inconvenient
Solution Approach 1:
The thrust arc plate's arc-shaped surface guides the compression rod through a curved motion path. This curvature allows the mechanism to achieve effective liquid discharge with a shorter linear press stroke, as the arc path efficiently converts the pressing motion into pump activation without requiring the full stroke length of traditional spring mechanisms
Solution Approach 2:
The quadrilateral linkage mechanism with compression rod column and compression rods provides dynamic motion transformation. The geometric configuration allows the pressing plate's linear motion to be transformed into the rotational and linear motion needed to activate the liquid discharging pump, achieving short stroke with effective discharge
3Reliability
If a spring-based pressing mechanism is used in existing liquid hand wash containers, then the liquid discharge function is achieved, but the structure is easy to be damaged and high in cost
Solution Approach 1:
The pressing mechanism is divided into modular components: pressing plate, thrust arc plate, compression rod module with quadrilateral linkage, and liquid discharging pump. This segmentation allows each component to be manufactured independently using simple processes, reducing overall manufacturing cost while improving reliability through modular design that isolates stress concentrations
Solution Approach 2:
The invention replaces the traditional spring-based mechanical system with a geometric linkage system based on the quadrilateral mechanism and arc-shaped thrust plate. This substitution eliminates the need for elastic springs and complex mechanical assemblies, resulting in a simpler, more reliable structure that is easier and cheaper to manufacture
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 achieves a shorter press stroke and reduced press force, enhancing usability and reliability while lowering manufacturing costs, making the device more accessible and efficient for liquid discharge.
Implementation Method 1
a geometric shape optimized through vector analysis to facilitate efficient liquid discharge
Data Source
AI summary
A liquid hand wash container includes an outer casing, a rear casing, a liquid storage bottle, a liquid discharging pump module, a pressing plate, a pressing base, two thrust arc plates and a compression rod module, wherein the outer housing and the rear housing are connected with each other to form an accommodating cavity through a buckle; all of the liquid storage bottle, the liquid discharging pump module, the pressing base (6) and the compression rod module (8) are disposed within the accommodating cavity; all of the liquid storage bottle (3), the liquid discharging pump module and the compression rod module are fixedly disposed on the rear housing; an upper portion of a liquid discharging pump is connected with the liquid storage bottle through a liquid discharging tube, a lower portion of the liquid discharging pump is movably connected with the pressing base.