Resilient Position Indicator for Wheel Nuts
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Solution Overview
Problem
Current position indicators for threaded fixing members, such as wheel nuts, are difficult to install, prone to premature wear, and require multiple sizes, leading to increased manufacturing and distribution costs, while existing adjustable indicators are poorly designed, expensive, and lack ease of use.
Innovation Solution
A position indicator with a deformable annular body made of resilient material, featuring a linear ratchet mechanism and adjustable clamping points, allowing for easy fitting and secure attachment to various nut sizes, and a design that enables easy orientation and secure mounting without the need for special tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If position indicators are made to fit a given size nut with fixed internal size, then they ensure a tight fit, but they are difficult to put on and require special tools
Solution Approach 1:
The position indicator employs a resilient body that can dynamically change its internal dimensions. The body is designed to be compressible along its longitudinal axis, allowing it to be compressed to a smaller size for easy installation onto the nut, and then resiliently recover to its original size to provide a secure tight fit without requiring special tools
Solution Approach 2:
The internal dimensions of the position indicator are made changeable through the resilient property of the body. By applying compressive force, the internal dimensions are temporarily reduced to facilitate installation, and upon release, the dimensions automatically return to the designed specification, ensuring both ease of operation and reliable fit
2Reliability
If position indicators are made to fit a given size nut with fixed internal size, then they ensure a tight fit, but they require stretching/deformation of material which adversely impacts service life and performance
Solution Approach 1:
The position indicator uses a resilient body that dynamically adjusts its dimensions during installation by compressing rather than stretching. This compression approach prevents permanent deformation and material fatigue, thereby extending service life while still achieving a secure tight fit through resilient recovery to the original dimensions
Solution Approach 2:
Instead of stretching the material to fit the nut (conventional approach), the invention inverts the approach by compressing the resilient body to a smaller size for installation, then allowing it to naturally rebound to its original dimensions. This inversion eliminates adverse material deformation and extends the service life of the position indicator
3Adaptability or versatility
If a range of different sized position indicators is used to fit different sized nuts, then they fit various nut sizes, but manufacturing and distribution costs increase
Solution Approach 1:
The position indicator is designed as a universal multi-functional device where a single model can fit multiple nut sizes. The resilient body allows adjustment of internal dimensions to accommodate different nut diameters, eliminating the need for manufacturers to produce and distribute multiple sized indicators, thereby reducing manufacturing and distribution costs while maintaining versatility
Solution Approach 2:
The resilient body's ability to dynamically adjust its internal dimensions enables a single position indicator design to accommodate various nut sizes. This dynamic adaptability allows manufacturers to produce one universal model rather than multiple fixed-size models, significantly reducing manufacturing complexity and distribution costs
4Adaptability or versatility
If adjustable position indicators are developed to fit more than one size of nut, then they reduce product range, but they are poorly designed, expensive and lack ease of use
Solution Approach 1:
The position indicator features a self-adjusting resilient body that automatically adapts to different nut sizes without requiring complex adjustment mechanisms or special tools. The user simply compresses the body and releases it, allowing the resilient material to self-adjust to the correct dimensions, providing both versatility and ease of use
Solution Approach 2:
The resilient body enables simple parameter changes in internal dimensions through compression and release. This straightforward mechanism allows the position indicator to adapt to different nut sizes without complex controls, maintaining ease of use while achieving multi-size compatibility
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 versatile, user-friendly, and cost-effective position indicator that can be easily mounted on different sized nuts, ensuring secure attachment and long service life, while allowing for easy detection of nut movement and elevated temperatures, thus enhancing safety and reducing maintenance efforts.
Implementation Method 1
The body is compressible along its longitudinal axis to a smaller size
Implementation Method 2
the resilient body... resiliently recovers to its original size
Data Source
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AI summary
A position indicator for mounting on a threaded fixing member such as a wheel nut or bolt, the position indicator comprising: (i) an annular body defining a void to receive the threaded fixing member, an inside surface adapted to engage with the threaded fixing member and prevent or impede relative rotational movement between the position indicator and the threaded fixing member, a first end comprising a male member and a second end comprising a female member; (ii) a clamping means operable in a single operation to reduce the size of the void, frictionally engage the male and female members and apply a clamping force to the threaded fixing member; and (iii) an indicating element for visually indicating the rotational position of the position indicator.