Actuator PCB Rivet Cooling and Deformation
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Solution Overview
Problem
Existing electromechanical actuators for motor vehicle active roll stabilizers face challenges in manufacturing and space utilization, particularly in effectively managing thermal dissipation and deformation absorption under mechanical and temperature loads.
Innovation Solution
An electromechanical actuator design featuring a torque measuring arrangement based on the inverse magnetostrictive principle, with a printed circuit board connected to an actuator housing via rivets, forming a gap for cooling and deformation absorption, and optimized for space-saving placement within a tapered housing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the printed circuit board is directly connected to the actuator housing, then structural stability is improved, but cooling efficiency and deformation absorption are worsened
Solution Approach 1:
The connection between the printed circuit board and actuator housing is segmented into discrete rivet connection points rather than a continuous direct connection. This segmentation allows the board to remain structurally supported while creating gaps for thermal management and deformation accommodation.
Solution Approach 2:
Rivets serve as intermediary elements between the printed circuit board and actuator housing. These intermediaries provide structural connection while allowing relative movement and creating space for cooling, thus mediating between the requirements for stability and thermal management.
2Stability of the object's composition
If the printed circuit board is directly connected to the actuator housing, then structural stability is improved, but deformation absorption is worsened
Solution Approach 1:
The connection is segmented into discrete rivet points that allow the printed circuit board to deform independently between connection points. This segmentation maintains overall structural stability while enabling local deformation absorption in response to mechanical loads and temperature changes.
Solution Approach 2:
The rigidity parameter of the connection is changed by using rivets instead of direct bonding. This creates a semi-rigid connection that is stable under normal conditions but allows deformation under extreme loads, adapting the structural behavior to different operating conditions.
3Ease of operation
If the printed circuit board is placed in the central housing area, then ease of access is improved, but space utilization is worsened
Solution Approach 1:
The printed circuit board is positioned in the tapered housing area rather than the central area, utilizing the radial dimension of the cylindrical housing. This dimensional repositioning allows optimal use of the available space while maintaining accessibility through the housing structure.
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 enhances cooling efficiency and deformation absorption, allowing for more efficient use of installation space and improved performance in actuator components, particularly in roll stabilizers and chassis applications.
Implementation Method 1
An actuator consists of a torque measuring arrangement based on the inverse magnetostrictive principle
Implementation Method 2
a gap is formed between the printed circuit board and the carrier element in a preferred design. This gap is advantageous in terms of cooling the printed circuit board. It also improves the possibilities for absorbing deformations that may occur during actuator operation, especially within a roll stabilizer or other chassis actuator, e.g., due to mechanical loads and/or temperature influences
Data Source
AI summary
An electromechanical chassis actuator, for example an actuator of a roll stabilizer, for a motor vehicle has a torque measuring arrangement based on the inverse magnetostrictive principle. At least one electronic unit has a printed circuit board which is connected at least indirectly to an actuator housing through a rivet connection.