Motorcycle Boot Hinge Riveting to Eliminate Sharp Projections
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Solution Overview
Problem
Existing wearable protection devices for motorcycle boots have drawbacks such as sharp projecting portions from hinging and connection means that can cause injury, and the need for a chemical blocking compound to prevent unscrewing, which is time-consuming and costly.
Innovation Solution
A wearable protection device with a modular frame comprising shaped members connected by hinge means, where the pivot element and disc element are permanently coupled by riveting, eliminating sharp projections and the need for chemical compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot element and disc element are coupled by screwing with threaded and counter-threaded portions, then the coupling can be assembled and disassembled, but sharp projections from the pivot element may cause injury and chemical blocking compounds are needed to prevent unscrewing
Solution Approach 1:
The patent extracts the harmful threaded portions from the pivot element and disc element, replacing them with a riveting mechanism. The pivot element is inserted through the disc element and permanently fixed by deformation, eliminating the threaded portions that cause sharp projections and the need for chemical blocking compounds.
Solution Approach 2:
The patent uses a disposable riveting mechanism where the pivot element is permanently fixed to the disc element through deformation. This eliminates the need for reusable threaded connections and chemical blocking compounds, simplifying the assembly while preventing injury from sharp projections.
2Reliability
If chemical blocking compound is applied on the pivot element and disc element to prevent unscrewing, then the coupling stability is improved, but the assembly time and cost increase
Solution Approach 1:
The patent removes the chemical blocking compound from the assembly process entirely by replacing the screwing mechanism with riveting. The pivot element is permanently fixed through mechanical deformation, achieving coupling stability without any chemical substances and significantly reducing assembly time.
Solution Approach 2:
The patent replaces the chemical-based blocking compound system with a mechanical riveting system. The pivot element is deformed to create a permanent mechanical connection with the disc element, achieving the same stability function without chemicals and with faster assembly.
3Strength
If the pivot element is made of metallic material for strength, then the coupling strength is improved, but sharp projections cause injury risk
Solution Approach 1:
The patent extracts the harmful sharp projections from the metallic pivot element by eliminating the threaded portions. The pivot element is inserted and deformed to create a smooth, rounded permanent connection with the disc element, maintaining metallic strength while removing injury-causing sharp edges.
Solution Approach 2:
Instead of creating threads on the metallic pivot element (which creates sharp projections), the patent inverts the approach by inserting the smooth pivot element and deforming it to create the connection. This reverses the traditional threading process and eliminates sharp projections while maintaining coupling strength.
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 provides a stable coupling between shaped members without sharp projections, eliminating the risk of injury and eliminating the need for chemical blocking compounds, thus reducing assembly time and cost.
Implementation Method 1
The pivot element and the disc element are permanently coupled together by riveting one of their elements, namely the pivot element, so as to avoid sharp projecting portions
Implementation Method 2
The second portion (18) is configured to be deformed inside the central hole (21) of the disc element so as to lie, after riveting, against the inner wall (22)
Data Source
AI summary
A wearable protection device including a modular frame with at least two shaped members and hinge means for hinging the shaped members therebetween at corresponding hinging points and around respective rotation axes. Each of the hinge means includes a pivot element and a disc element which are permanently coupled by riveting of the pivot element. After the riveting, the pivot element (12) is closely aligned or flush with the disc element. Also provided is a method of assembling said wearable protection device and a motorcycle boot including the wearable protection device.