Pluggable Connecting Buckle Anti-Loosening Design
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Solution Overview
Problem
Existing connecting buckles, such as those used in pet ropes, suffer from loosening due to wear and uneven force distribution, leading to user experience issues and a short service life, as the return spring's reactive force causes repeated collisions and wear, and the acute angle design results in poor turning experience.
Innovation Solution
A pluggable connecting buckle design featuring a male and female buckle with a riveting shaft, turning plate, and spring, where the inclined engagement surface is tangent to the movement trajectory, and anti-loosening protrusions and recesses ensure uniform force distribution and prevent loosening, combined with a semicircular turning end and anti-slip grooves for improved user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the return spring is used to provide reactive force for the resisting portion, then the unlocking function is achieved, but the repeated collisions and wear occur during pet movement
Solution Approach 1:
The patent introduces an inclined engagement surface as an intermediary between the resisting portion and the engagement groove. This inclined surface acts as a mediator that converts the direct collision into a gradual sliding motion, reducing the impact force and wear on the turning block while maintaining the unlocking function provided by the return spring.
Solution Approach 2:
The patent applies beforehand cushioning by designing the inclined engagement surface that gradually guides the resisting portion during the buckling process. This pre-designed path cushions the impact before it reaches the turning block, preventing direct hard collisions that cause wear during pet movement.
2Device complexity
If the acute angle turning portion is used, then the structure is compact, but the turning experience is poor
Solution Approach 1:
The patent applies spheroidality by changing the turning portion from an acute angle to a rounded curved surface. This curvature provides a more comfortable contact area for user fingers, improving the turning experience while maintaining the compact structure through the efficient use of curved geometry in the turning block design.
3Ease of operation
If the inclined contact between return spring and fixing groove is used, then the buckling function is achieved, but the forces are not uniform and the spring is easy to break
Solution Approach 1:
The patent applies parameter changes by modifying the contact geometry between the spring and the fixing groove. By optimizing the contact surface angle and distribution, the patent transforms the force distribution from concentrated and uneven to more uniform across the contact area, reducing stress concentrations that lead to spring failure while maintaining the buckling function.
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 buckle maintains a secure connection, prevents loosening, and extends service life by distributing forces uniformly and reducing wear, while providing a comfortable and efficient user experience through improved design features.
Implementation Method 1
a spring arranged on the turning plate
Implementation Method 2
a spring arranged on the turning plate
Implementation Method 3
an inverted hook plane corresponding to the limiting plate is arranged on the turning end
Data Source
AI summary
The present application discloses a pluggable connecting buckle, including a male buckle and a female buckle. A first connecting rod is arranged on one end of the male buckle, and a decorative plate and a buckling rib are arranged on an other end. A buckling block is arranged on the buckling rib, and a corresponding engagement groove is arranged on the buckling rib. A second connecting rod and an accommodating cavity are respectively arranged on two ends of the female buckle. Two engagement assemblies are respectively arranged on two sides of the accommodating cavity. A limiting plate is arranged on the engagement assembly which includes a turning plate. An inclined engagement surface is arranged on the engagement groove, and an inverted hook plane is arranged on the turning end of the turning plate. The pluggable connecting buckle has a good anti-loosening effect, a long service life, and good user experience.