Quick String-Tying Device with Tapered Slit Clamping Mechanism
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Solution Overview
Problem
Existing quick string-tying devices are often complex and have multiple parts, making them cumbersome for quick and efficient string tying and loosening.
Innovation Solution
A simplified quick string-tying device with a first case body featuring a bottom portion, open end, and sidewall forming an accommodation space with string-passing openings and slits that taper to securely clamp string ends, and a second case body with a connecting portion for additional security and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing quick string-tying devices are used to achieve quick string tying, then the tying speed is improved, but the device structure becomes complicated and has more parts
Solution Approach 1:
The patent integrates multiple functional elements into a single case body structure. The accommodation space, slits, and string-passing openings are all part of one unified case body, eliminating the need for separate clamping mechanisms and reducing the number of parts while maintaining quick string-tying capability
Solution Approach 2:
The case body serves multiple functions simultaneously: it provides an accommodation space for the string knot, contains slits for clamping the string ends, and has string-passing openings for threading. This multi-functional design achieves quick string tying without requiring additional specialized components
2Device complexity
If a simplified quick string-tying device is used to reduce device complexity, then the structure is simplified, but the security and reliability of string clamping may be compromised
Solution Approach 1:
The slits are designed with varying widths - narrower at the bottom and wider at the top - to create different clamping forces at different locations. This local variation in geometry provides secure clamping of the string ends while maintaining an overall simple case body structure
Solution Approach 2:
The slits act as intermediary clamping elements within the case body. They provide a localized clamping mechanism that secures the string ends without requiring a complex overall device structure, thus maintaining reliability while preserving simplicity
3Reliability
If slits with varying width are used to clamp string ends, then the clamping effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The slit width parameter is intentionally varied along its length (narrower at bottom, wider at top) to optimize clamping effectiveness. This parameter change is designed into the mold geometry, allowing standard manufacturing processes to produce the varying width without requiring post-manufacturing precision adjustments
Data Source
AI summary
The present application relates to a quick string-tying device including a first case body provided with a first bottom portion, a first open end, and a first sidewall extending and formed from the first bottom portion towards the first open end, the first bottom portion and the first sidewall forming a first accommodation space, the first bottom portion being provided with a first string-passing opening for two free ends of a string to pass therethrough, a slit formed on the first sidewall and extending from the first open end towards the first bottom portion, the slit being used to clamp the two free ends of the string which enter into the slit. The quick string-tying device is suitable for use on various items that require tying of a string, and can achieve quick tying and loosening of a string. A method for tying a string is also disclosed.