Sip Lid With Twisting Tab Mechanism for Secure Locking
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Solution Overview
Problem
Conventional sip lids with tabs or lids do not provide a secure fixation in the open position, hindering consumption from beverage containers.
Innovation Solution
A sip lid design featuring a movable tab with a hinge axis at a lid angle to a division line, allowing a twisting motion for easier opening and improved locking, combined with biodegradable materials like moulded pulp and aliphatic polyester for enhanced sustainability and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional tab or lid is used to cover the drinking opening, then the opening can be closed, but the tab is not fixated or locked thoroughly in the recess in the open position
Solution Approach 1:
The hinge axis is positioned asymmetrically at a specific lid angle (1-5 degrees) relative to the division line, creating an asymmetric geometric relationship between the tab, hinge, and recess. This asymmetric configuration generates a twisting effect during rotation that enhances both the locking reliability in the open position and the ease of opening operation, resolving the contradiction between these two parameters.
Solution Approach 2:
The invention changes the geometric parameter of the hinge axis orientation by introducing a specific lid angle (1-5 degrees) relative to the division line. This parameter modification transforms the rotational movement into a twisting motion that improves fixation reliability while maintaining ease of operation, directly addressing the technical contradiction.
2Reliability
If the tab is rotated directly without a lid angle, then the structure is simple, but the lock of the movable tab by the recess is not improved
Solution Approach 1:
The invention modifies the geometric parameter of the hinge axis orientation by introducing a specific lid angle (1-5 degrees) relative to the division line. This parameter change creates a twisting effect during rotation that significantly improves the locking effect between the tab and recess, while the complexity added is minimal - only a change in angle rather than a fundamentally different mechanism.
3Reliability
If manufacturing tolerances are tight to ensure proper locking, then the locking effect is maintained, but the amount of product rejection increases
Solution Approach 1:
The invention changes the geometric parameter of the hinge axis orientation to a specific lid angle (1-5 degrees) that creates a self-aligning twisting effect. This parameter modification makes the locking mechanism more robust to manufacturing variations, allowing wider tolerance ranges while maintaining consistent locking performance, thereby reducing product rejection and improving manufacturing efficiency.
Data Source
AI summary
The invention relates to a siplid 2, a container provided with such siplid and a method therefor. The siplid comprises: ⋅—a container side 4, a consumer side 6, and a siplid plane 12 having a siplid axis 14; ⋅—an edge 8 configured for surrounding a container opening to cover the container opening; ⋅—a drinking opening 18 in the siplid having a length L substantially extending in the circumferential direction of the siplid, and having a width W substantially extending in the radial direction of the siplid; ⋅—a moveable tab 20 configured for covering the opening in a closed position; ⋅—a recess 22 configured for receiving the moveable tab in an open position; ⋅—a hinge 32 configured for enabling rotational movement of the tab around a hinge axis; and ⋅—a section line 16 extending in the siplid plane dividing the opening in two equal parts, and a division line 34 in between the opening and the recess extending substantially perpendicular to the section line wherein the hinge axis is provided at a lid angle to the division line.