Soap Dispenser Pump with Wave-Shaped Pads for Stable Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional soap dispensers with duckbill-type and ball-type unidirectional valve structures face issues with stability and sealing effectiveness, leading to inconsistent soap dispensing and short service life due to size inaccuracies and leakage problems.
Innovation Solution
A liquid pump mechanism featuring an outlet tube, upper and lower wave-shaped pads, a piston, spring, annular internal sleeve, and a pump body with a dividing member, allowing for controlled unidirectional communication between chambers through movable pads and a sealing ring, ensuring stable closure of outlet and inlet holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a duckbill-type unidirectional valve structure is used, then the liquid pump can absorb and output liquid soap, but the sealing effect is poor and the dispensed quantity stability is affected
Solution Approach 1:
The patent uses a flexible wave-shaped sealing pad instead of a rigid duckbill valve. The wave-shaped pad can deform elastically to seal against the outlet hole, providing reliable sealing while accommodating manufacturing tolerances. This flexible membrane approach resolves the contradiction by achieving both manufacturability and sealing effectiveness.
2Ease of manufacture
If a duckbill-type unidirectional valve structure is used, then the liquid pump can absorb and output liquid soap, but the service life is poor
Solution Approach 1:
The wave-shaped sealing pad is designed as a durable flexible component that can repeatedly deform during pump operation. This elastic membrane structure withstands continuous compression and relaxation cycles, significantly extending the service life compared to fragile duckbill valves while remaining simple to manufacture.
3Ease of manufacture
If a ball-type unidirectional valve structure is used, then the liquid pump can absorb and output liquid soap, but leakage problems occur when ball size error is too large
Solution Approach 1:
The flexible wave-shaped pad compensates for dimensional variations through elastic deformation. Unlike rigid balls that require precise sizing, the flexible membrane can conform to slight variations in hole dimensions, eliminating leakage issues while maintaining ease of manufacture with standard tolerances.
4Ease of manufacture
If a duckbill-type unidirectional valve structure is used, then the liquid pump can absorb and output liquid soap, but the opening size stability is poor affecting dispensed quantity
Solution Approach 1:
The wave-shaped sealing pad provides consistent sealing pressure through its elastic properties, ensuring stable opening and closing action. The flexibility allows the pad to maintain reliable contact with the outlet hole regardless of minor manufacturing variations, stabilizing the dispensed quantity while keeping the structure simple 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
This design provides improved stability and reliability in soap dispensing by ensuring consistent dispensed quantities and reducing leakage, with easily controllable pad sizes for manufacturing precision.
Implementation Method 1
a spring (4), wherein two ends of the spring (4) respectively abut against the piston (3) and the annular internal sleeve (5)
Implementation Method 2
The upper wave-shaped pad (2) is an annular structure having a through hole (21), wherein a peripheral edge of the upper wave-shaped pad (2) is disposed between the outlet tube (1) and the piston (3). The upper wave-shaped pad (2) movably closes the outlet hole (31).
Data Source
AI summary
A liquid pump mechanism for a soap dispenser includes a pump body, and an outlet tube, an upper wave-shaped pad, a piston, a spring, an annular internal sleeve, and a lower wave-shaped pad which are sequentially disposed inside the pump body from top down. A dividing member formed in the pump body divides an inner cavity of the pump body into a main chamber and an inlet chamber. An outlet passage is formed in the outlet tube. The outlet tube and the main chamber are movably sealed and engaged. The piston divides the main chamber into a compatible chamber and a liquid soap chamber. An outlet hole communicating the outlet passage and the liquid soap chamber is disposed on the piston. An inlet hole communicating the liquid soap chamber and the inlet chamber is disposed on the dividing member. The upper wave-shaped pad is disposed between the outlet tube and the piston and movably closes the outlet hole. The lower wave-shaped pad is disposed between the annular internal sleeve and the dividing member and movably closes the inlet hole.