Buckle End Fitting Structure to Prevent Rope Slip and Wear

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing buckles used to connect circular ropes or straps experience slipping, leading to wear and tear, increased volume, and aesthetic issues due to knots.

Innovation Solution

A connecting buckle end fitting comprising a connecting body, sleeve, pin, and bushing, which securely fastens the rope by using a convex ring and inner convex ring configuration to prevent slipping and reduce wear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a ring body is used to connect the buckle with a circular rope, then the connection is achieved, but the rope is prone to sliding and wearing

Engineering Contradiction:

Improveconnection stabilityVSAvoidrope wear and sliding

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a connecting fitting as an intermediary component between the buckle and the rope. This fitting includes a connecting portion that connects to the buckle and a fixing portion that secures the rope through a clamping mechanism with movable and fixed clamping blocks, thereby preventing direct sliding and wear between the rope and the buckle's ring body.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The connecting fitting is divided into distinct functional segments: a connecting portion for attachment to the buckle, a fixing portion for securing the rope, and clamping blocks that can move independently to grip the rope. This segmentation allows each part to perform its specific function optimally, with the clamping blocks providing secure grip without causing wear.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a knot is used to secure the rope, then the connection is achieved, but the volume increases and aesthetics are affected

Engineering Contradiction:

Improveconnection securityVSAvoidknot volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The connecting fitting serves as a mediator that replaces the need for knots. The fixing portion with its clamping mechanism securely holds the rope end without requiring it to be tied into a bulky knot, thus maintaining both security and a compact, aesthetically pleasing appearance.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If a simple ring structure is used for connection, then the device complexity is low, but the rope sliding and wear problem occurs

Engineering Contradiction:

Improveconnection structure complexityVSAvoidrope sliding and wear

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The connecting fitting is a relatively simple intermediary component that adds minimal complexity to the system. It includes a body with a connecting portion and a fixing portion, with movable clamping blocks that can be actuated to grip the rope. This simple structure effectively prevents rope sliding and wear without requiring complex mechanisms.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12520911B2Connecting buckle end fitting

Publication Date: 2026.01.13 WENZHOU YUANFEI PET TOY PROD

AI summary

A connecting buckle end fitting includes a connecting body, a sleeve, a pin, and a bushing. The connecting body has a connecting section, an insertion section, and an insertion needle. The connecting section connects with the buckle, the insertion section has a first insertion hole, and the insertion needle has an outer convex ring. The sleeve has a through hole with a second insertion hole and an inner convex ring. The pin passes through the second insertion hole into the first insertion hole. The bushing is located between the insertion section and the inner convex ring. This end fitting securely fixes the rope and reduces wear, extending the rope's service life.