Foam Pump Spring Sealing Independence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing foam pumps rely on springs for sealing, which can lead to deformation and reduced service life due to prolonged extension, affecting the sealing and foam pressing functions.
Innovation Solution
A foam pump design that uses a gland, connecting part, moving part, outer cover, inner core, and spring, where the gland rotates to create a sealing assembly independent of the spring, maintaining the spring in an unstressed state to prevent deformation and ensure sealing without affecting foam pressing and resetting functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring is used to support the sealing assembly in an extended state, then the sealing function is achieved, but the spring undergoes deformation and fatigue damage reducing its service life
Solution Approach 1:
The patent divides the sealing function from the spring function by introducing a separate sealing assembly that can operate independently. The sealing assembly includes a sealing element that directly contacts the container opening to prevent liquid leakage, while the spring is relieved of its sealing responsibility and only needs to provide resetting force, thereby reducing continuous stress on the spring
Solution Approach 2:
The patent introduces a sealing assembly as an intermediary component between the spring and the container opening. This sealing assembly transfers the sealing function away from the spring, allowing the spring to remain in a less stressed state while still enabling the foam dispensing mechanism to function properly
2Reliability
If the spring remains in an extended state for prolonged periods, then sealing is maintained, but the spring experiences fatigue damage and deformation
Solution Approach 1:
The patent implements a sealing assembly that is pre-configured to provide sealing contact with the container opening. This preliminary sealing action eliminates the need for the spring to maintain continuous extended pressure for sealing purposes, allowing the spring to return to a relaxed state between operations and reducing cumulative fatigue stress
Solution Approach 2:
The patent creates a dynamic sealing system where the sealing assembly can move and adapt to maintain sealing contact without requiring the spring to remain in a permanently extended state. The sealing element can flex and conform to the container opening, providing reliable sealing with minimal spring stress
Data Source
AI summary
A foam pump independent of spring sealing includes a gland, a connecting part, a moving part, an outer cover, an inner core, a piston, a middle sheath, a piston seat, an outer case, a bead, a spring and a straw. The gland can rotate relative to the outer cover, and is connected with the moving part located in the gland; the connecting part is fixed in an inner cavity of the gland; one end of the inner core away from the moving part extends into an inner cavity of the piston, and is movably connected with a sealing assembly on the piston along with the piston seat. The foam pump independent of spring sealing can prevent the liquid from being squeezed, and can also increase the service life of the spring and improve product competitiveness and user experience.