Self-Centering Wheel Clamp With Gear Linkage
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Solution Overview
Problem
Conventional vehicle wheel alignment systems cause damage to the wheel rim due to metal-to-metal contact and require time-consuming and precise placement of gripping devices, and existing solutions fail to provide secure, easy, and automatic centering across a wide range of wheel diameters without additional adaptors.
Innovation Solution
A wheel clamp with extendable arms and a self-centering linkage mechanism using gears and link arms that grip the tire tread and sidewall, allowing the clamp body to remain parallel to the wheel without contacting the rim, ensuring secure and rapid attachment across various diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wheel clamps use metal grabbers to grip the wheel rim, then secure attachment is achieved, but rim surface damage occurs due to metal-to-metal contact
Solution Approach 1:
The patent introduces an intermediary mechanism (the extendable arm with gripping portion) that transfers the attachment function from direct metal-to-metal contact to a mediated gripping action on the tire tread, eliminating harmful rim contact while maintaining secure attachment
Solution Approach 2:
The invention extracts the harmful metal grabber components from the attachment system and replaces them with extendable arms that grip the tire tread, removing the source of rim damage while preserving the essential attachment function
2Strength
If conventional wheel clamps use precise placement of grabbers in the annular groove, then secure gripping is achieved, but attachment time increases due to precision requirements
Solution Approach 1:
The self-centering linkage mechanism automatically positions the extendable arms in the correct gripping position without requiring manual precision alignment, allowing the system to self-adjust and eliminate the time-consuming precise placement step
Solution Approach 2:
The linkage mechanism pre-positions the extendable arms as the clamp approaches the tire, so that when the arms extend, they are already in the correct orientation and position for immediate secure gripping, eliminating the need for manual precision alignment
3Adaptability or versatility
If wheel clamps are designed to accommodate various wheel sizes, then versatility is improved, but device complexity increases due to need for adaptors
Solution Approach 1:
The patent employs dynamically adjustable extendable arms with variable reach, allowing the same clamp design to adapt to different wheel sizes by extending or retracting the arms, eliminating the need for multiple fixed-size adaptors and reducing overall system complexity
Solution Approach 2:
The extendable arm mechanism serves multiple functions: it provides the gripping action, adjusts to different wheel diameters, and maintains proper positioning, replacing what would otherwise require multiple specialized adaptors for different wheel sizes
4Stability of the object's composition
If wheel clamps contact the rim surface for support, then stability is improved, but rim damage risk increases
Solution Approach 1:
The extendable arm acts as an intermediary between the clamp body and the wheel, providing stable support through gripping the tire tread and sidewall rather than direct rim contact, thereby maintaining clamp stability while eliminating rim damage risk
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 secure, rapid, and damage-free wheel alignment by automatically centering and gripping the tire without rim contact, accommodating a wide range of wheel diameters with ease and speed, ensuring consistent clamp tightness and minimizing deformation-related issues.
Implementation Method 1
A self-centering linkage mechanism comprising a plurality of gears rotatably mounted to the clamp body and engaged with each other
Implementation Method 2
Each extendable arm has a gripping portion for gripping a tread surface of the vehicle tire
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A wheel clamp attaches to a vehicle wheel for performing a wheel alignment on the vehicle. The wheel clamp has a body for supporting a target or measuring head, and three extendable arms slidably mounted to the body. Each arm has a gripping portion for gripping the tire's tread surface and a sidewall contact portion for contacting the tire sidewall such that the clamp body is substantially parallel to the vehicle wheel and the wheel clamp has no contact with the rim. A self-centering linkage has enmeshed gears and link arms respectively connecting the arms to the gears, such that when the gears are rotated, the arms simultaneously proportionally slide relative to the clamp body, so the gripping portions of the arms engage and grip the tire tread surface and tighten the clamp onto the tire, while the sidewall contact portions of the arms contact the tire sidewall.