Tiltable Valve Element Radial Pressure Fluid Dispensing
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Solution Overview
Problem
Existing fluid dispensing devices are structurally complex, difficult to assemble, and prone to issues such as incomplete mixing and excessive fluid saturation, with many parts and complex mechanisms leading to reliability and usability issues.
Innovation Solution
A pen-like device with a tiltable valve element and a compression spring that allows for easy opening of the outlet by radial pressure, reducing the number of parts and ensuring reliable sealing, with a flattened gripping region for easy operation and a single valve element for dosed dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex valve mechanism with multiple parts is used to achieve dosed dispensing, then the dosing function is improved, but the device complexity increases and assembly becomes difficult
Solution Approach 1:
The patent combines the valve element, sealing element, and spring into a single integrated assembly. The valve element serves both as the closing element and the lever arm, while the sealing element is integrated onto the valve element. This merging reduces the number of separate parts while maintaining the dosing function through the pivotable valve mechanism that opens only when radial pressure is applied.
2Reliability
If the outlet opening is kept closed by a sealing mechanism, then sealing integrity is improved, but the ease of operation deteriorates due to complex opening mechanisms
Solution Approach 1:
Instead of requiring a complex mechanism to maintain closure and allow opening, the patent inverts the approach: the valve element is held open by default (or can be easily opened) and uses a simple spring mechanism to return to the closed position. The sealing is passive when closed, and opening is achieved by simple radial pressure that pivots the valve element, eliminating the need for complex actuation mechanisms.
3Ease of operation
If radial pressure is applied to open the valve element, then the ease of operation is improved, but the manufacturing precision requirements worsen due to the need for precise pivot points and sealing surfaces
Solution Approach 1:
The patent employs a flexible sealing element that can deform to accommodate minor misalignments in the pivot point and sealing surface. This flexible sealing mechanism compensates for manufacturing tolerances, allowing the radial pressure operation to work effectively without requiring extremely precise manufacturing of the pivot points and sealing surfaces.
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 device achieves a simple, reliable, and cost-effective dosed dispensing mechanism with reduced part complexity, ensuring effective mixing and easy operation, while maintaining sealing integrity and allowing for precise control of fluid flow.
Implementation Method 1
designed at its rear end to accommodate a front end of an axially acting compression spring
Implementation Method 2
closes the outlet opening under the force of a spring
Implementation Method 3
a wall of the flattened gripping region has a smaller thickness than a wall of the storage chamber, so as to be more susceptible to elastic deformation than the wall of the storage chamber
Data Source
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AI summary
A device (10) for dosed dispensing of a fluid medium is provided with a pen-like housing (11) which has a storage chamber (12) for accommodating the fluid medium and which has at its front end a tip (15) in which there is provided an outlet opening (17) for the fluid medium. Arranged in the front end is a valve element (18) which closes the outlet opening (17) under the force of a spring (19) and is arranged such that it at least partially opens the outlet opening (17) in the event of radial pressure (24) being applied from the outside on the front end of the housing (11). The valve element (18) is arranged in a tiltable manner at the outlet opening (17).