Plastic Bottle Cap Anti-Slip Rotation Mechanism
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Solution Overview
Problem
Conventional plastic bottle caps are difficult to rotate quickly and easily, leading to slipping issues during use, which limits their convenience and effectiveness in sealing and opening processes.
Innovation Solution
The design incorporates a cap body with an annular groove and semi-circular rings connected by hinges, along with sliding and fixing rods, springs, and arc-shaped grooves and plates, allowing for easy opening and rotation by sliding and rotating mechanisms that prevent slipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional plastic bottle cap structure with multiple seal rings and drainage holes is used, then the sealing effect is improved, but the ease of operation deteriorates due to difficulty in rotating and slipping during use
Solution Approach 1:
The patent introduces a dynamic interaction between the arc-shaped plate and arc-shaped groove, where the arc-shaped plate can rotate within the groove during cap opening. This dynamic mechanism transforms the static friction problem into a controlled rotational motion, allowing the cap to be easily opened while maintaining sealing reliability through the seal rings.
Solution Approach 2:
The patent employs curved surfaces including arc-shaped grooves and arc-shaped plates with rotating shafts. These curved geometries reduce contact friction compared to flat surfaces, enabling smoother rotation and easier cap opening while preserving the sealing function through properly positioned seal rings.
2Reliability
If the cap structure is designed with multiple components for sealing (inner seal ring, middle seal ring, outer seal ring), then the sealing reliability is improved, but the device complexity increases
Solution Approach 1:
The patent divides the sealing function into multiple independent seal rings (inner, middle, outer) that can be manufactured separately and assembled. This segmentation allows each seal ring to be optimized for specific sealing positions while maintaining overall reliability, and simplifies manufacturing and replacement processes.
Solution Approach 2:
The patent implements a nested arrangement where the inner seal ring, middle seal ring, and outer seal ring are positioned concentrically within the cap structure. This nested configuration maximizes sealing effectiveness at different radial positions while minimizing the overall space required, avoiding excessive complexity.
3Ease of operation
If the cap is designed to be easy to open quickly, then the ease of operation is improved, but the reliability of the sealing structure may deteriorate due to potential improper sealing
Solution Approach 1:
The patent positions the arc-shaped plate and rotating shaft mechanism in advance within the cap structure, ready to facilitate easy opening. The seal rings are pre-installed at their optimal positions to ensure proper sealing before use. This preliminary arrangement allows quick opening operation while maintaining sealing integrity through the pre-positioned sealing components.
Solution Approach 2:
The arc-shaped plate acts as an intermediary mechanism between the user's opening action and the cap structure. By providing a mechanical advantage through its rotation within the arc-shaped groove, it enables easy opening while the seal rings serve as intermediaries to maintain the sealing barrier, thus resolving the conflict between ease of operation and sealing reliability.
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
Enables quick and convenient opening and reuse of the sealing structure while allowing the cap body to rotate smoothly, preventing slipping and enhancing user experience with a simple and effective design.
Implementation Method 1
one end of the two semi-circular rings is rotatably connected by the first hinge
Implementation Method 2
One end of the positioning rod is slidably install in the positioning groove
Data Source
AI summary
A plastic bottle cap includes a plastic cap body. The bottom side of the cap body is an opening, and the inner wall of the cap body near the bottom side opening of the cap body is annularly provided with a groove. The sealing ring is installed in the groove, and one side of the sealing ring extends to the outside of the groove. The annular groove is opened around the inner ring of the bottle cap body. Two semi-circular rings are movably mounted in the annular groove, one end of the two semi-circular rings is rotatably connected by the first hinge, one end of the two semi-circular rings which far away from the first hinge is fixed with the first fixing block and the second fixing blocks respectively, and the first fixing block and the second fixing block correspond to the setting.