Rear Wheel Suspension Linear Guide Actuator
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Solution Overview
Problem
Conventional rear wheel suspension systems for motor vehicles are complex and costly due to the need for intricate control arms and control arm bearings, which complicates steering functionality and increases expenses.
Innovation Solution
A wheel suspension design featuring a wheel carrier with a pivotable actuator and a linear guide that allows for camber and toe adjustments without complex transverse/longitudinal control arm structures, utilizing actuator cylinders and a bearing spring for simplified assembly and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional control arms and control arm bearings are used for rear wheel suspension, then the wheel guiding function is achieved, but the structural complexity and manufacturing cost increase significantly
Solution Approach 1:
The wheel carrier is divided into separate functional components: a guide part that provides linear vertical guidance and a carrier part that holds the wheel. This segmentation eliminates the need for complex control arms while maintaining proper wheel guidance through the combination of linear guide and pivoting motion.
Solution Approach 2:
The invention extracts and eliminates the control arm and control arm bearing components from the suspension system. Instead, it uses a simplified assembly consisting of a linear guide, actuator, and divided wheel carrier to achieve the same wheel guiding function with reduced complexity.
2Adaptability or versatility
If rear axle steering is added to conventional wheel suspension, then steering functionality is achieved, but the overall axle structure becomes more complex and expensive
Solution Approach 1:
The actuator serves multiple functions: it provides both the steering function by pivoting the carrier part and the wheel guiding function through its connection between the guide part and carrier part. This multi-functionality eliminates the need for separate steering mechanisms in addition to the suspension system.
Solution Approach 2:
The invention merges the steering function and suspension function into a single integrated structure. The actuator simultaneously performs steering by pivoting the carrier and suspension by working with the linear guide, combining what would traditionally be separate systems into one unified mechanism.
3Manufacturing precision
If complex control arm structures are used for wheel guiding, then proper wheel positioning is achieved, but the weight and manufacturing cost increase
Solution Approach 1:
The invention replaces expensive, complex control arm structures with simpler, more affordable components. The linear guide and divided wheel carrier provide the necessary positioning accuracy using less material and simpler manufacturing processes, reducing both weight and cost.
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
This design enables almost arbitrary wheel steerability, reduces weight and cost, and maintains desired driving characteristics by eliminating complex control arms, allowing for precise camber and toe adjustments while simplifying the assembly process.
Implementation Method 1
The wheel carrier, in particular its guide part, is indirectly or directly positively guided on a linear guide affixed to the body only in the vertical direction, similar to a sliding guide. The linear guide unit according to the invention may simultaneously include a spring and a damper and prevent the wheel from turning about the vertical axis when longitudinal forces are introduced
Implementation Method 2
The linear guide unit according to the invention may simultaneously include a spring and a damper
Implementation Method 3
The linear guide unit according to the invention may simultaneously include a spring and a damper
Implementation Method 4
the actuator is configured to pivot the wheel-side carrier part for adiusting at least one of a camber and toe angle with respect to the axle-side guide part by a pivot angle
Data Source
AI summary
The invention relates to a wheel suspension for motor vehicles, comprising a wheel carrier (14), which has a wheel-side carrier part (16) that rotatably supports a vehicle wheel (12) and an axle-side guide part (18), between which a control element is connected, wherein the wheel-side carrier part (16) can be pivoted about a pivot angle relative to the axle-side guide part (18) to set a toe angle and/or camber angle when the control element is actuated. According to the invention, the wheel carrier (14), in particular the guide part (18) thereof, is guided directly or indirectly on a linear guide (26) affixed to the body in form of a slotted guide, allowing movement in the vertical direction.