Cord Fastener Zigzag Projections String Fixation
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Solution Overview
Problem
Existing string stoppers face difficulties in achieving enhanced firmness of temporary fixation while maintaining improved handleability, as the pair of holding plates require precise alignment and extension or narrowing, making it challenging to fit the string effectively.
Innovation Solution
A string stopper design featuring a cylindrical socket with a plug that includes alternate projections (first and second projections) arranged in a zigzag manner, allowing the string to be easily interposed and secured between them, providing enhanced friction and firmness without requiring extensive plate alignment or narrowing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lengths of the holding plates are extended or the interval between them is narrowed to enhance holding force, then the firmness of temporary fixation is improved, but it becomes difficult to fit the string between the plates
Solution Approach 1:
The patent transitions from a two-dimensional plate structure to a three-dimensional zigzag projection structure. The first and second projections extend in alternating directions from the leg, creating a立体 (spatial) configuration that encloses the string from multiple angles, thereby enhancing holding force without requiring the string fitting space to be reduced.
Solution Approach 2:
The first and second projections are positioned asymmetrically relative to the leg, with the first projection extending from one side and the second projection extending from the opposite side in a zigzag pattern. This asymmetric arrangement creates effective string enclosure while maintaining adequate spacing for string insertion.
2Ease of operation
If the pair of holding plates are used to temporarily fix the string, then handleability is improved, but it becomes troublesome to fit the string between the opposed plates
Solution Approach 1:
The holding structure is segmented into multiple discrete projections (first projection and second projection) rather than using continuous opposed plates. This segmentation allows the string to be inserted between the projections more easily while still achieving effective temporary fixation, reducing the complexity of the fitting process.
Solution Approach 2:
The patent replaces the two-dimensional plate configuration with a three-dimensional zigzag projection arrangement. The projections extend alternately from the leg in different directions, creating a spatial enclosure that is easier for the string to engage with, thereby simplifying the fitting operation while maintaining handleability.
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 zigzag arrangement of projections facilitates easy string fitting and secure temporary fixation, enhancing the firmness of the string stopper while simplifying the attachment process, allowing for improved handleability and manufacturing efficiency.
Implementation Method 1
a temporarily fixing portion configured to temporarily fix the string ends, and the temporarily fixing portion includes a first projection and a second projection laterally projecting from the leg, the first projection and the second projection projecting in an alternate manner in an extending direction of the leg
Data Source
AI summary
A string stopper temporarily fixing a string with enhanced firmness while having improved handleability is provided. A string stopper includes a body accommodating plural string ends, the body including a substantially cylindrical socket and a plug insertable in the socket, the socket including a string opening, a plug opening, an accommodating portion accommodating a predetermined length of the string ends, and plural securing portions securing the string ends in the accommodating portion, the plug including a base closing the plug opening, a leg integrally extending from the base and insertable in the accommodating portion and a temporarily fixing portion temporarily fixing the string ends and including first projection and second projection laterally projecting from the leg. The first projection includes two or more first projections arranged along the extending direction of the leg. The second projection faces a space between the first projections.