Indirect Vision Adjustment Unit With Distributed Force Connection
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Solution Overview
Problem
Existing adjustment units for indirect vision systems in vehicles face challenges in minimizing installation space while meeting robust mechanical requirements, and they struggle to implement different joining directions in tight spaces.
Innovation Solution
The adjustment unit connects the first and second components via a main connecting element with a spring-loaded pressure distribution element, allowing for even force distribution across the transverse extent of the second component, which compensates for dimensional changes and reduces distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central force connection is used between the adjustment unit and the support structure, then the connection is simple and direct, but dimensional changes due to aging and creep behavior cause distortion and the connection cannot withstand robust mechanical requirements in small installation spaces
Solution Approach 1:
The force connection is segmented from a single central point to multiple distributed contact points across the transverse extent of the second component. The pressure distribution element divides the force transmission path into multiple contact zones, allowing each point to bear portion of the mechanical load, thereby increasing overall reliability without requiring a fundamentally more complex connection structure.
Solution Approach 2:
The force connection transitions from a one-dimensional central axis to a two-dimensional distributed pattern across the transverse extent of the component. By spreading the connection in the transverse dimension rather than concentrating it centrally, the design achieves better mechanical robustness while accommodating compact installation spaces.
2Strength
If multiple connecting elements are used to achieve robust mechanical connection, then the mechanical requirements are met, but the installation space increases and assembly becomes more complex
Solution Approach 1:
Multiple connecting elements are merged into a single integrated pressure distribution element that provides distributed force transmission. This element combines multiple contact points and force paths into one component, achieving the mechanical strength of multiple connections while occupying the space of a single element, thereby reducing installation space requirements.
Solution Approach 2:
The pressure distribution element serves multiple functions simultaneously: it distributes forces across multiple contact points, compensates for dimensional changes, provides mechanical coupling, and maintains structural integrity. This multi-functionality eliminates the need for separate components for each function, reducing the overall installation space.
3Stability of the object's composition
If the second component is rigidly fixed to the support structure, then the connection is stable, but age-related deformations and creep behavior cause distortion and prevent accommodation of dimensional changes
Solution Approach 1:
The connection transitions from a static rigid fixation to a dynamic force distribution system. The pressure distribution element allows continuous adjustment and redistribution of forces in response to dimensional changes, enabling the connection to adapt to creep behavior and thermal expansion while maintaining overall stability through distributed force equilibrium.
Solution Approach 2:
The system accommodates dimensional changes by allowing changes in the distribution parameters of the force connections. As materials expand or deform with age, the contact pressures and force distribution points adjust accordingly, maintaining connection stability through parameter adaptation rather than rigid geometric constraints.
4Adaptability or versatility
If different joining directions are implemented in tight installation spaces, then connection flexibility is improved, but the complexity of assembly increases and space requirements are not minimized
Solution Approach 1:
Instead of adapting the joining directions to fit tight spaces, the design inverts the approach by allowing the force distribution to adapt to the available space geometry. The pressure distribution element can engage the support structure at multiple points with varying orientations, letting the connection geometry adapt to the installation space rather than forcing a predetermined joining direction.
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 solution enables a compact, robust connection that withstands mechanical stress, compensates for age-related deformations, and simplifies assembly by minimizing the number of connecting elements and installation space.
Implementation Method 1
the spring element presses the pressure distribution element against the second component
Implementation Method 2
forces introduced centrally onto the pressure distribution element and thus onto the second component are evenly distributed in a direction transverse to the main connecting element
Implementation Method 3
This compensates for dimensional changes due to aging – the creep behavior of plastics
Data Source
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AI summary
An adjustment unit for indirect vision systems is described, comprising a first and a second component. This unit is connected to the supporting structure of the indirect vision system using as few connecting elements as possible. The interface between the adjustment unit and the supporting structure must withstand robust mechanical requirements within a small installation space. Because the second component includes a pressure distribution element extending transversely to the longitudinal direction of the main connecting element, and because this pressure distribution element is pressurized by the main connecting element, the forces applied centrally to the pressure distribution element, and thus to the second component, are distributed evenly in the direction transverse to the main connecting element. The force transmission with the supporting structure is therefore no longer centrally located, but distributed across the transverse extent of the second component.This allows dimensional changes due to aging - creep behavior of plastics - to be compensated for and reduces warping of individual components.