Flexible Lug Nut Locking Device for Wheel Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in large vehicles, especially tractor-trailers, is the difficulty in detecting loosening wheel lug nuts due to their location and configuration, which can lead to unnoticed loosening, potentially resulting in wheel detachment, as existing solutions are either cumbersome or lack effective prevention mechanisms.
Innovation Solution
A wheel lug nut locking device with a flat member having planar sections and a flexible, concertina-like connection that can be friction-fitted around lug nuts, providing resistance to rotational movement and indicating any loosening through visible deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic clips are interlocked around each lug nut to prevent loosening, then reliability is improved, but device complexity and installation time increase excessively
Solution Approach 1:
The locking device is divided into multiple independent locking elements (first locking element on first lug nut, second locking element on second lug nut) that are connected by a flexible connection section. Each locking element independently secures its respective lug nut, while the flexible connection allows the system to function as a unified indicator. This segmentation simplifies the overall structure compared to a single complex interlocking ring while maintaining reliability through distributed locking points.
Solution Approach 2:
The connection section is designed to be flexible rather than rigid, allowing it to bend and deform when lug nuts experience differential rotational movement. This dynamic flexibility enables the device to accommodate normal settlement and vibration while still providing reliable locking prevention and visible indication when abnormal loosening occurs, without requiring a complex rigid interlocking structure.
2Difficulty of detecting and measuring
If visual inspection devices like plastic disks with arrows are used to detect loosening, then detection capability is improved, but prevention capability is lost
Solution Approach 1:
The invention merges the detection function (visual indication through flexible connection deformation) and prevention function (locking resistance through friction-fit openings and resilient biasing) into a single integrated device. The locking device with friction-fit openings and resilient connection section simultaneously prevents loosening through mechanical resistance and indicates loosening through visible deformation, eliminating the need for separate detection and prevention devices.
Solution Approach 2:
The locking device performs self-indication of loosening through the visible deformation of its flexible connection section when lug nuts move differentially. The device monitors its own locking status and provides automatic visual feedback to the operator without requiring external inspection tools or complex sensing mechanisms, while continuously providing prevention through its locking structure.
3Reliability
If multiple separate locking devices are fitted to each lug nut individually, then reliability is improved, but installation time and operational complexity increase
Solution Approach 1:
Multiple locking elements are merged into a single integrated device where the first locking element on the first lug nut and the second locking element on the second lug nut are connected by a flexible connection section. This allows the device to be installed as one unit rather than multiple separate devices, significantly reducing installation time while maintaining the reliability benefits of multiple locking points through the distributed locking elements.
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 device effectively prevents and indicates loosening of wheel lug nuts, reducing the risk of wheel detachment by providing easy installation, low-cost, and visible indication of lug nut movement, ensuring operator awareness and safety.
Implementation Method 1
a flexible, resilient connection section which allows relative movement of the first and second planar sections within the plane of the flat member
Implementation Method 2
each of said first and second planar sections has a opening adapted to be friction fitted around a wheel lug nut
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
A wheel lug nut locking device having first and second planar sections, each with an opening adapted to be fitted around a wheel lug nut. The planar sections are connected by a flexible section that allows the planar sections to be moved relative to one another. In a preferred embodiment, the flexible section has a concertina-like structure. In use, the locking device is used to lock a wheel lug nut to an adjacent wheel lug nut, so as to prevent or reduce rotation of the wheel lug nut. A plurality of locking devices can be fitted to a single wheel so that all of the lug nuts are operatively locked to an adjacent lug nut. The resulting locking system can be rapidly installed on each lug nut on all wheels, so as to provide improved safety aspects.