Sensor Housing Damping Element Center of Mass Alignment
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Solution Overview
Problem
The production of sensor housings for micromechanical sensor elements that require access to media is complex and costly, especially in small quantities, due to the need for specialized molds and materials that are limited by their damping properties and frequency-specific effectiveness.
Innovation Solution
A housing design featuring a cavity for the sensor element and a gel-like damping material that is immobilized with the sensor element to share a common center of mass, allowing precise damping in the plane of excitation and enabling the sensor element to move freely in all directions without cross-coupling, achieved through a method involving a lead frame, cavity creation, damping material introduction, curing, and lead frame removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional premold housings or circuit board substrates with steel or plastic covers are used, then sensor housing functionality is achieved, but production complexity and cost increase significantly
Solution Approach 1:
The patent combines the housing structure with the damping function into a single integrated component. The housing itself is designed to provide damping through its material properties and structural configuration, eliminating the need for separate damping elements or complex multi-layer constructions. This merging of structural and damping functions reduces both production complexity and cost.
Solution Approach 2:
The housing is designed to serve multiple functions simultaneously: it provides mechanical support, environmental protection, and vibration damping. By making the housing multi-functional, the patent eliminates the need for additional specialized components, thereby simplifying the overall structure and reducing manufacturing costs.
2Object-affected harmful factors
If specialized molds and materials with specific damping properties are used, then vibration damping is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent achieves vibration damping by optimizing the material parameters and structural parameters of the housing itself, rather than requiring specialized damping materials. By adjusting the housing material's elasticity, density, and geometric parameters, the desired damping effect is obtained using conventional manufacturing processes and materials.
Solution Approach 2:
The patent employs conventional, cost-effective materials and standard manufacturing processes to achieve damping, rather than relying on expensive specialized damping materials or complex mold technologies. This approach makes vibration damping accessible in cost-sensitive applications.
3Object-affected harmful factors
If damping materials are used with frequency-specific effectiveness, then damping performance is optimized, but adaptability to different frequency ranges is limited
Solution Approach 1:
The patent designs the housing with dynamic characteristics that can be adjusted to match different operating conditions. By varying the housing's structural parameters, material properties, and geometric configuration, the damping performance can be optimized for different frequency ranges, providing versatility without requiring multiple specialized components.
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 results in a cost-effective, vibrationally decoupled sensor housing that provides accurate sensor signals by optimizing damping properties and natural frequencies, allowing for efficient manufacturing in various configurations without complex molds, thus reducing production costs and enabling large-scale production.
Implementation Method 1
introducing gel-like damping material into a space between the sensor element and the housing; curing the damping material
Implementation Method 2
the micromechanical sensor element disposed according to the present invention in the housing is damped by way of the damping element precisely in the plane of the excitation
Implementation Method 3
the micromechanical sensor element being immobilizable in the cavity by way of the damping element in such a way that the damping element and the sensor element together have a substantially common center of mass
Data Source
AI summary
A housing for a micromechanical sensor element, including a cavity in which the sensor element is disposable, and a damping element, the micromechanical sensor element being immobilizable in the cavity by the damping element so that the damping element and the sensor element together have a substantially common center of mass.