Pulling Rope Fixing Structure Friction Reduction
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Solution Overview
Problem
Conventional elastic fitness devices suffer from damage due to long-term friction between the pulling rope and the fixing device, leading to premature wear and potential user injury from sudden rope breakage.
Innovation Solution
A pulling rope fixing structure featuring a hollow tubular handle, a grip rope with openings, a metal fixing device with a retaining ring and fastening element, an elastic element with protrusions to prevent direct contact, and a position limiting element to secure the pulling rope, which reduces friction and prevents direct contact between the rope and the fixing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pulling rope is directly fixed to the fixing element, then the structure is simple and easy to manufacture, but the pulling rope suffers from fatigue wear and friction damage leading to premature breakage
Solution Approach 1:
The patent introduces an elastic element as an intermediary component between the pulling rope and the fixing element. This elastic element acts as a mediator that prevents direct contact and friction between the rope and the rigid fixing structure, thereby reducing wear and extending the rope's service life while maintaining a relatively simple overall structure
2Device complexity
If the pulling rope is directly fixed to the fixing element, then the device structure is simple, but the pulling rope breaks due to long-term friction and wear
Solution Approach 1:
The elastic element serves as a mediator component that inserts between the pulling rope and the fixing element. This addition only minimally increases device complexity while effectively preventing friction-induced breakage, achieving a good balance between structural simplicity and reliability
3Device complexity
If the pulling rope is directly fixed to the fixing element, then the fixing structure is simple, but users may be injured by sudden rope breakage during exercise
Solution Approach 1:
The elastic element acts as a protective intermediary that reduces friction and wear on the pulling rope, thereby preventing sudden rope breakage and the associated risk of user injury during exercise, while adding only minimal structural complexity to the fixing system
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 solution effectively reduces frictional damage to the pulling rope, extends its service life, and prevents user injury by isolating the rope from the fixing device, ensuring a safer and more durable exercise experience.
Implementation Method 1
an elastic element, made of rubber, and installed in the hollow sleeve, and having a penetrating hole, wherein the elastic element has a first protrusion and a second protrusion abutted against the fixing device to prevent the elastic element from being loosened or falling out
Implementation Method 2
the positioning limiting element has a diameter greater than the diameter of the penetrating hole, and the pulling rope is a hollow elastic pulling rope
Data Source
AI summary
A pulling rope fixing structure includes a handle, a grip rope, a fixing device, an elastic element and a pulling rope. The handle is a hollow tubular body with the grip rope passed through the handle; the grip rope has first and second ends with first and second openings respectively; the fixing device includes a retaining ring and a fastening element, and the fastening element has a hollow sleeve passed into the first and second openings and operated with the retaining ring to fix the grip rope. The elastic element is installed in the hollow sleeve and has a penetrating hole for passing the pulling rope and separating the pulling rope from the fixing device. The pulling rope not in a direct contact with the metal fixing device will not be worn directly during exercises, and the service life of the pulling rope can be extended effectively.