Emergency Wheel Attachment With Movable Tread for Flat Tire Traction
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Solution Overview
Problem
Existing vehicle wheel attachments fail to provide reliable driving comfort and wear resistance, especially when operating with a flat tire or on icy or snowy conditions, due to inadequate traction and support.
Innovation Solution
The attachment features a tread section with movable segments and heat conduction elements, combined with a bracing mechanism and clamping devices that securely engage with the rim, ensuring stable traction and improved wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the attachment uses a stationary section fastened immovably to the rim, then the attachment provides stable support for driving with a flat tire, but the tread experiences increased wear due to lack of movement compensation
Solution Approach 1:
The patent applies the dynamics principle by making the tread section movable relative to the stationary section through a bearing arrangement. This allows the tread to move in the circumferential direction during rotation, compensating for wear in a wear-resistant manner while maintaining stable support for driving with a flat tire.
Solution Approach 2:
The attachment is divided into distinct functional sections: a stationary section fastened to the rim and a movable tread section. This segmentation allows each part to perform its specific function - the stationary section provides stable mounting while the movable tread section handles road contact and wear compensation.
2Reliability
If the attachment uses clamping devices to engage behind the rim flange, then the attachment achieves secure fastening, but the installation complexity increases
Solution Approach 1:
The clamping devices are spring-pretensioned, allowing them to automatically engage and clamp onto the rim flange without requiring additional fastening operations. The spring mechanism provides self-service fastening that secures the attachment reliably while simplifying installation.
3Reliability
If the tread is made of elastomeric material for better traction on ice and snow, then the driving comfort improves, but the heat dissipation capability decreases leading to increased wear
Solution Approach 1:
The tread section uses elastomeric material for superior traction on ice and snow while incorporating heat-conducting elements within its structure. This composite approach maintains the beneficial friction properties of elastomers while adding thermal management capability to dissipate heat and reduce wear.
Solution Approach 2:
Heat-conducting elements are introduced as intermediary components within the elastomeric tread structure. These elements act as thermal mediators that conduct heat away from the tread-road contact area, preventing excessive heat buildup while preserving the elastomeric material's traction properties.
4Duration of action of stationary object
If the attachment allows circumferential movement of the tread section, then wear is compensated and durability increases, but the structural complexity increases
Solution Approach 1:
A bearing arrangement enables the tread section to move circumferentially relative to the stationary section. This dynamic capability allows the tread to compensate for wear during rotation, extending attachment durability while using a relatively simple bearing mechanism to achieve the movement.
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 enhanced driving comfort and wear resistance by maintaining traction on various road conditions, including ice and snow, while supporting the vehicle with a flat tire, and reducing wear through improved heat dissipation and secure fastening.
Implementation Method 1
heat conduction elements... reducing wear through improved heat dissipation
Data Source
AI summary
An attachment is provided for a vehicle wheel, having a rim and a tire arranged on the rim, for enabling a driving operation with a restricted tire function in an operating state in which the attachment is fastened on the vehicle wheel. The attachment may include a stationary section configured to be fastened immovably with respect to the rim in the operating state in which the attachment is fastened on the vehicle wheel, a tread section with a tread for contacting the road, and at least two clamping devices configured to engage behind a section of the rim to fasten the attachment on the vehicle wheel, wherein the tread includes at least one tread segment arranged movably in a circumferential direction with respect to the stationary section in the operating state in which the attachment is fastened on the vehicle wheel.