Cap Unit With Gas Passage Protrusion For Shared Lid Packing
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Solution Overview
Problem
Conventional cap units for containers require different lid packings with varying distances between liquid and gas passage plugs to optimally block ports, leading to component sharing issues and potential moldability problems during resin molding.
Innovation Solution
A cap unit design featuring a cap main body with a gas passage protrusion and a sealing surface, where the lid packing's liquid and gas passage plugs can effectively block ports regardless of container size, using a shared lid packing that adapts to different port positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different lid packings with varying distances between liquid and gas passage plugs are prepared for different container sizes, then optimal blocking of ports is achieved, but component sharing is reduced and manufacturing complexity increases
Solution Approach 1:
The lid packing is designed with a universal structure that can effectively block both liquid passage ports and gas passage ports across different container sizes without requiring size-specific variations. This single universal lid packing design eliminates the need for multiple specialized components while maintaining optimal blocking effectiveness for all port configurations.
2Reliability
If the sealing part is arranged to protrude upward with reduced plate thickness, then gas passage port blocking is improved, but resin fluidity during molding deteriorates
Solution Approach 1:
The sealing part design is modified by adjusting parameters such as protrusion height, plate thickness distribution, and geometric configuration to achieve optimal sealing effectiveness while maintaining adequate resin fluidity during the molding process. These parameter optimizations ensure both functional performance and manufacturability without compromising either aspect.
Data Source
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AI summary
A cap unit that makes it possible to stabilize the dimensions or moldability of a sealing part and appropriately block a liquid passage port and a gas passage port by a lid packing while striving for the sharing of the lid packing. The cap unit comprises main body 7, in which a liquid passage port 10 and a gas passage port 11 communicated with the inner side of a container main body 2A are arranged; a lid body 9, which is pivotably attached to the cap main body 7 via a hinge part 8; and a lid packing 14, in which a liquid passage plug part 14a that blocks the liquid passage port 10 and a gas passage plug part 14b that blocks the gas passage port 11 are arranged; where the cap main body 7 has an upper wall portion 7b in which the liquid passage port 10 and the gas passage port 11 are arranged, the gas passage protrusion 7e which protrudes upward from the upper surface of the upper wall portion 7b, and a sealing surface 7d which is located on the upper surface of the gas passage protrusion 7e and is in close contact with the gas passage plug part 14b in a state where the gas passage plug part 14b blocks the gas passage port 11, and the gas passage port 11 is arranged biased to the hinge part 8 side or the side opposite to the hinge part 8 of the sealing surface 7d.