Wet sheet storage container
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Solution Overview
Problem
The existing wet sheet storage containers face difficulties in lid installation due to either excessive idling or poor installation properties, depending on the thread height design, which affects the fitting and rotation of the lid body.
Innovation Solution
The design incorporates male thread parts on the container body with a higher tip end height than the base end, a shorter tip end length compared to the base end, and an inclined part, ensuring a height ratio of 0.7 < b/a < 1.0 and a length ratio of 1.0 < d/c < 5.0, to improve installation properties while minimizing idling during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the height of the thread part is designed to be high to prevent idling during rotation, then the lid body is stable during installation, but the installation property deteriorates and the lid body is difficult to fit
Solution Approach 1:
The thread part is segmented into two distinct sections: a base end part with greater height for preventing idling during rotation, and a tip end part with smaller height for facilitating easy installation. This segmentation allows each part to fulfill its specific function optimally without compromising the other.
Solution Approach 2:
Different heights are assigned to different parts of the thread structure. The base end part has a larger height to provide stability during rotation, while the tip end part has a smaller height to enable easy installation. This local differentiation of quality resolves the contradiction between stability and ease of installation.
2Ease of operation
If the height of the thread part is designed to be low to improve installation property, then the lid body is easy to fit, but the lid body is liable to idle during rotation
Solution Approach 1:
The thread part is divided into a base end part with smaller height for easy installation and a tip end part with greater height to prevent idling during rotation. This segmentation enables the structure to achieve both ease of installation and rotational stability simultaneously.
Solution Approach 2:
The thread structure employs local quality differentiation where the base end part has reduced height to facilitate installation, while the tip end part has increased height to prevent idling during rotation, thereby resolving the contradiction between ease of operation and reliability.
3Device complexity
If the thread part has uniform height, then the structure is simple, but it cannot simultaneously achieve good installation property and prevent idling
Solution Approach 1:
Instead of a uniform thread structure, the invention segments the thread part into a base end part and a tip end part with different heights. This segmentation increases structural complexity but enables the simultaneous achievement of good installation properties and prevention of idling during rotation.
Solution Approach 2:
The thread structure transitions from uniform height to locally differentiated heights, where the base end part and tip end part have different dimensions optimized for their respective functions. This local quality variation resolves the contradiction between structural simplicity and functional performance.
Data Source
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AI summary
[Problem] To provide a wet sheet storage container for which installability from above a lid body can be improved during manufacturing while restricting idle rotation of the lid body during installation when rotating the lid body. [Solution] A plurality of male thread parts (12) for screwing the lid body (20) in the circumferential direction are formed on the outer circumferential surface of an upper end part of a container body (10), and a plurality of female thread parts (26) for threadedly engaging with the male thread parts (12) are formed on the inner circumferential surface of the lid body (20). Furthermore, the male thread parts (12) are each provided with a base end part (121) formed on the upstream side in the rotation direction of the lid body (20) during installation of the lid body (20), and a tip end part (122) formed on the downstream side in the rotation direction of the lid body (20), and the male thread parts (12) are formed such that the height of the tip end part (122) is greater than the height of the base end part (121).