Radially Expandable Wheel Nut Lock with Interlocking Indicators
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Solution Overview
Problem
Existing wheel nut position indicators are difficult to install, remove, and operate, especially in dirty or cold environments, due to fixed diameter and cross-section openings that require precise alignment and are affected by dirt and thermal expansion, and visibility issues with color differences in dirty conditions.
Innovation Solution
A radially expandable cylindrical body with a toothed central bore and perpendicularly extending indicators and locking mechanisms that form a continuous loop around the wheel nuts, allowing for easy installation and visibility of nut position through a triangular aperture, with a gap and semi-circular slot for accommodating different sizes and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed diameter opening is used in the wheel nut indicator device, then the device structure is simple, but the device becomes difficult to install and remove, and requires thorough cleaning of the nut prior installation
Solution Approach 1:
The device employs a radially expandable body that can transition between a compressed state for easy installation and a locked expanded state for secure positioning. The expandable body allows the device to adapt to the wheel nut dimensions without requiring precise pre-cleaning or alignment, resolving the contradiction between structural simplicity and ease of operation.
2Device complexity
If a fixed diameter opening is used in the wheel nut indicator device, then the device structure is simple, but the device is affected by thermal expansion and shrinkage in cold climates
Solution Approach 1:
The radially expandable body provides dynamic adaptability to temperature variations. When temperatures drop and the device shrinks, the expandable structure compensates by allowing radial compression, maintaining proper fit and function. This dynamic characteristic resolves the contradiction between structural simplicity and adaptability to thermal conditions.
3Device complexity
If a fixed cross-section opening is used in the wheel nut indicator device, then the device structure is simple, but accurate alignment with the wheel nut is difficult in dirty environments
Solution Approach 1:
The radially expandable body allows the device to be installed without precise alignment by compressing the structure, then expanding to engage the wheel nut securely. This dynamic installation process eliminates the need for accurate alignment in dirty environments, resolving the contradiction between structural simplicity and ease of operation.
4Device complexity
If a differently colored portion is used to indicate wheel nut position, then the indication method is simple, but the color differences are difficult to see when the wheel assembly is covered by dirt and debris
Solution Approach 1:
The device uses a high-visibility reflective indicator that maintains visibility even when the wheel assembly is dirty. The indicator may incorporate reflective materials or high-contrast colors that remain detectable against dirty backgrounds, resolving the contradiction between indication simplicity and detection difficulty.
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 user-friendly, adaptable, and visible indication of wheel nut position, ensuring secure installation and easy operation even in challenging environments, while accommodating variations in size and debris, enhancing stability and safety.
Implementation Method 1
The cylindrical body having a gap therein so as to permit the cylindrical body to be radially expandable
Implementation Method 2
The arms may be radially biased towards a center of the toothed central bore
Implementation Method 3
The arms may extend between proximate and distal ends, the proximate ends being secured to the cylindrical body and the distal ends forming the gap therebetween, wherein the arms are cantilvered towards each other
Data Source
AI summary
Disclosed is an apparatus for locking and flagging a wheel nut, the wheel nut being rotatable about a central axis to a secured position. The apparatus comprises a substantially cylindrical body having a toothed central bore therein sized to closely surround and engage a periphery of the wheel nut. The cylindrical body having a slot therein so as to permit the cylindrical body to be radially expandable. The apparatus further comprises a first extension extending perpendicularly from the body having an indicator thereon and a second extension extending perpendicularly from the body to an opposed side thereof. The second extension having a distal end adapted to overlap and engage with a first extension of an adjacent wheel nut cover so as to cover the indicator of the adjacent wheel nut cover when the wheel nut is in a secured position.