All-Plastic Perfume Pump Structure for Leak-Safe Recycling
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Solution Overview
Problem
Existing perfume pumps with metal springs incur high recycling costs and may cause liquid leakage due to insufficient resilience from plastic springs.
Innovation Solution
An all-plastic perfume pump design featuring a plastic bead, resilient piece, and valve needle system that facilitates recycling and enhances sealing performance by using plastic components and specific bevel designs for improved resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal spring is used in the perfume pump, then the resilience is sufficient to prevent liquid leakage, but the recycling cost increases due to separation and separate recycling requirements
Solution Approach 1:
The patent applies homogeneity by making the resilient piece from the same plastic material as the pump body, creating a homogeneous single-material structure that eliminates the need for separation during recycling, thereby reducing recycling costs while maintaining the resilience function
Solution Approach 2:
The patent merges the resilient piece with the plastic pump body into a unified single-material structure, combining the functions of structural support and resilient operation in one homogeneous component that can be recycled together without separation
2Ease of manufacture
If a plastic spring is used in the perfume pump, then the recycling cost is reduced due to single-material construction, but the resilience is insufficient causing liquid leakage
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the resilient piece, including its thickness distribution with varying thickness regions, curvature radius, and structural dimensions, to optimize the elastic properties and achieve sufficient resilience while maintaining plastic material benefits for low-cost recycling
Solution Approach 2:
The patent utilizes curvature by designing the resilient piece with specific curved surfaces and rounded edges, where the curvature radius is carefully controlled to enhance the elastic deformation capability and resilient force of the plastic material, preventing liquid leakage while maintaining recyclability
3Ease of manufacture
If the resilient piece has uniform thickness, then the manufacturing is simplified, but the resilient force is insufficient to maintain proper sealing performance
Solution Approach 1:
The patent applies local quality by implementing variable thickness distribution in the resilient piece, where different regions have different thickness values - thinner regions provide flexibility while thicker regions provide structural support and resilient force, optimizing both sealing performance and manufacturability
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 all-plastic design reduces recycling costs, ensures better sealing, and prevents liquid leakage while allowing easy replacement of contents and recycling of the pump components.
Implementation Method 1
a resilient piece is provided at an upper end of the connecting lid and sleeved on the valve stem
Data Source
AI summary
The present invention discloses an all-plastic perfume pump and a bottle body used therefor, where the pump includes a pump body, a plastic bead is provided in the pump body mounted in a big ring, a spacer is provided in the big ring and sleeved outside the pump body, a port on the bottom of the pump body is connected to a suction tube, a piston is provided inside the pump body and inserted with a valve needle, an upper end of the valve needle is connected to a valve stem, a top opening of the pump body is attached to a connecting lid, an upper end of the connecting lid is provided with a resilient piece sleeved on the valve stem, the valve stem is connected to a pressing cap, the resilient piece is limited by the valve stem and the valve needle.