Trigger Sprayer Reservoir Valve Structure for Consistent Sealing
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Solution Overview
Problem
The sealability of the reservoir valve in trigger-type liquid ejectors is inconsistent due to varying elastic forces and larger valve diameters, leading to potential leaks and reduced effectiveness.
Innovation Solution
The reservoir valve is integrated into the inner tube of the longitudinal supply tube, allowing elastic deformation in the vertical direction to maintain consistent sealability and reduce the valve's size, with a fixed portion, valve main body, and elastic deforming portion to control liquid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reservoir valve is made larger to match the reservoir cylinder diameter, then the valve can cover the supply hole, but the elastic force of the valve decreases and sealability deteriorates
Solution Approach 1:
The patent changes the material parameter of the reservoir valve from conventional materials to silicone rubber, which has superior elasticity and flexibility. This material parameter change enables the valve to maintain adequate elastic force despite its larger size, thereby resolving the contradiction between valve size and elastic force while ensuring reliable sealability.
2Force
If the reservoir valve is made smaller to increase elastic force, then sealability improves, but the valve cannot properly cover the supply hole
Solution Approach 1:
The patent employs silicone rubber material with unique viscoelastic properties that allow the valve to deform and conform to the supply hole shape. This material parameter enables the valve to maintain both adequate elastic force for sealing and sufficient coverage of the supply hole, resolving the contradiction between valve size and sealability.
3Reliability
If the reservoir valve is made more complex to improve sealability, then sealing performance increases, but the valve becomes more difficult to manufacture and assemble
Solution Approach 1:
The patent utilizes the inherent flexibility and thin-film characteristics of silicone rubber to create a reservoir valve that achieves effective sealing through material properties rather than complex mechanical structures. This approach simplifies the valve design for easier manufacturing and assembly while maintaining reliable sealability.
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 enhances sealability by reducing valve size and maintaining consistent elastic force, improving assembly efficiency and reducing parts, while ensuring reliable liquid flow control.
Implementation Method 1
The reservoir valve is provided in the inner tube and configured to allow supply of the liquid from the longitudinal supply tube portion into the reservoir cylinder by being elastically deformed in the vertical direction
Data Source
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AI summary
The present invention is a trigger-type liquid ejector (1, 201) including an ejector main body (2, 202) and a nozzle member (3). The ejector main body (2, 202) includes: a longitudinal supply tube portion (10); a trigger mechanism (50) including a trigger portion (51); a reservoir cylinder (90); a reservoir plunger (110); and a reservoir valve (20). The longitudinal supply tube portion (10) includes an outer tube (12) and an inner tube (13). A recovery passage (17) is provided between the outer tube (12) and the inner tube (13). The reservoir valve (20) is provided in the inner tube (13) and configured to allow supply of a liquid from the longitudinal supply tube portion (10) into the reservoir cylinder (90) by being elastically deformed in the vertical direction.