Dispensing Container Valve Body Segmentation for Airtightness
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Solution Overview
Problem
Conventional discharge containers require high squeezing force for content discharge, which deteriorates usability, and reducing valve deformation to ease operation compromises airtightness, allowing external air to enter the container.
Innovation Solution
A discharge container with an elastically deformable main body, a cylindrical discharge nozzle, an inside plug with a communication hole, and a valve body that includes a separable valve portion, a main body portion, and a connecting portion, where the valve portion is spaced apart from the nozzle's ceiling wall, allowing pressure to be applied to both the valve and main body portions, reducing the squeezing force required for discharge while maintaining airtightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the valve portion is made easy to deform to lighten operation, then ease of operation is improved, but airtightness deteriorates and external air enters the container
Solution Approach 1:
The valve body is divided into a valve portion and a main body portion that can move relative to each other. The main body portion acts as an intermediary that transmits pressure from the container interior to open the valve portion, separating the deformation function from the sealing function.
Solution Approach 2:
The main body portion of the valve acts as a mediator between the container's internal pressure and the valve portion. It transmits the pressing force to open the valve while maintaining the sealing interface between the valve portion and discharge valve seat.
2Productivity
If high squeezing force is applied to discharge contents, then discharge function is improved, but usability deteriorates
Solution Approach 1:
The valve opening mechanism uses the container's own internal pressure to open the valve, eliminating the need for external actuation forces. The system self-activates when the container is squeezed, converting the squeezing force directly into valve opening motion through the main body portion's upward movement.
3Ease of operation
If the valve portion is simply made easy to deform to lighten operation, then ease of operation is improved, but airtightness deteriorates
Solution Approach 1:
The valve body is divided into a valve portion and a main body portion that can move relative to each other. The main body portion acts as an intermediary that transmits pressure from the container interior to open the valve portion, separating the deformation function from the sealing function.
Solution Approach 2:
The main body portion of the valve acts as a mediator between the container's internal pressure and the valve portion. It transmits the pressing force to open the valve while maintaining the sealing interface between the valve portion and discharge valve seat.
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 reduces the squeezing force needed for content discharge while maintaining airtightness by distributing pressure across the main body portion, allowing the valve to open with less force and ensuring the container remains sealed during operation.
Implementation Method 1
a container main body in which contents are stored and which is elastically deformable
Data Source
Figure 1
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Figure 3
AI summary
A discharge container (1) includes a discharge nozzle (10) which is formed in a cylindrical shape with a top, is mounted on a mouth portion (3) of a container main body (2), and has a ceiling wall portion (11) in which a discharge hole (12) configured to discharge the contents is formed, an inside plug (20) which is disposed inside the discharge nozzle (10) and in which a communication hole (21) configured to allow the discharge hole (12) to communicate with an inside of the container main body (2) is formed, and a valve body (30) which is configured to close the communication hole (21) such that the communication hole (21) is able to be opened, in which the valve body (30) includes a valve portion (31) disposed on an opening circumferential edge (21a) of the communication hole (21) in the inside plug (20) such that the valve portion (31) is separable upward from the opening circumferential edge (21a), a main body portion (33) which is formed in a cylindrical shape with a top and is disposed below the valve portion (31) and in which a bottom opening (32) which opens toward an inside of the container main body (2) is formed, and a connecting portion (36) which connects a lower portion of the valve portion (31) with a top wall portion (33b) of the main body portion (33), and an upper surface (31a) of the valve portion (31) is spaced apart downward from the ceiling wall portion (11) of the discharge nozzle (10).