Perfume Bump Valve Needle Y-Shaped Spring Design
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Solution Overview
Problem
Existing micro sprayers, particularly perfume bumps with external springs, face issues of weak stability, inconvenient assembly, and complex production processes, along with poor nozzle fixation and outflow stability.
Innovation Solution
A perfume bump design featuring a special-shape spring located between the valve rod and piston, which is fixed to the bump body, avoiding direct contact with the liquid and preventing chemical reactions, while using a Y-shaped spring structure to enhance stability and simplify assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a metal spring is used inside the bump body, then the spring can provide elastic force for the valve mechanism, but the spring will chemically react with the liquid perfume causing corrosion and reliability issues
Solution Approach 1:
The spring is extracted from the internal cavity and repositioned to the external surface of the bump body. This spatial separation removes the spring from contact with the perfume liquid, eliminating the chemical reaction problem while preserving the spring's elastic force function through the transmission mechanism.
Solution Approach 2:
A transmission mechanism consisting of a transmission rod and transmission hole serves as an intermediary between the external spring and the internal valve components. This mediator transmits the spring's elastic force through the bump body wall to actuate the valve needle, enabling force transmission without direct spring-perfume contact.
2Object-affected harmful factors
If an external spring structure is adopted to prevent chemical reactions, then the spring is separated from the perfume, but the structural stability becomes weak and assembly becomes inconvenient
Solution Approach 1:
The spring is designed with an asymmetric Y-shaped cross-section rather than a conventional circular shape. This asymmetric geometry provides enhanced structural stability and rigidity for the external spring while maintaining its elastic force generation capability, addressing the weakness of simple external spring structures.
Solution Approach 2:
The spring transitions from a simple linear element to a three-dimensional Y-shaped structure with multiple branches. This dimensional complexity adds structural stability and creates multiple attachment points, improving both the spring's own stability and its connection to the bump body components.
3Ease of operation
If a dual-spring structure with long and short springs is used, then the valve needle unit can realize dual pressing functions, but the production cost increases and the process becomes complicated
Solution Approach 1:
The single Y-shaped spring performs multiple functions that were previously divided between two springs. The spring's different branches and sections provide both the pressing force for the valve needle and the elastic restoration force, eliminating the need for separate long and short springs while maintaining the dual pressing functionality.
Solution Approach 2:
The functions of the long spring and short spring are merged into a single integrated Y-shaped spring structure. This consolidation reduces the number of components from two to one, simplifying the overall structure, reducing production cost, and easing assembly while preserving the combined pressing and restoring functions.
4Reliability
If the nozzle is designed to be fixed, then the outflow effect can be maintained, but the assembly process becomes more difficult and production is less convenient
Solution Approach 1:
The traditional mechanical interference fit or threaded fixation of the nozzle is replaced with a bayonet-style rotational locking mechanism. This allows the nozzle to be securely fixed in position while enabling simple tool-free assembly and disassembly through rotational motion, improving both reliability and manufacturing convenience.
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 improves the stability and reliability of the outflow effect, reduces production costs, and ensures a secure seal, making it suitable for perfume and similar products with easier assembly and use.
Implementation Method 1
the external diameter of valve rod between inner piston and inner stopper is equipped with special-shape spring
Implementation Method 2
piston moves in bump body, which make air flow and lower the pressure inside the bump body, while pressure outside bump body is unchanged. It produces pressure difference inside and outside the bump body
Implementation Method 3
the liquid will be instantaneously atomized when encountering high speed flow. It is an application of Bernoulli's principle: for a same liquid, high flow corresponds to low pressure; low flow corresponds to high pressure
Data Source
AI summary
A perfume bump valve needle unit has a valve needle, piston, spring and valve rod. A bump body unit has a valve needle unit, bump body, glass bulb and inner stopper. A bump head unit has an alumina press cap, spay chip and head cap. A valve rod external diameter between the inner piston and stopper has a Y-shaped spring with an end fixed to a recess and hold. A piston limit is at the valve needle head; an opposing needle bar sets into the rod center hole. A ring recess at the valve needle bar end snap-fits with a rod inner diameter ring buckle. The valve needle external diameter has an effluent trough from the ring recess to the head. A piston internal ring and rod external diameter fit and seal. A channel between trough and piston open when the rod, piston and valve needle move to the bulb.