Annular Elevation Pressing Element Prevents Sensor Slippage
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Solution Overview
Problem
Existing electrical sensor components with elastically deformable pressing elements often experience partial contact issues due to manufacturing tolerances and technological limitations, leading to potential slippage of the sensor element off the contact pressure element during deformation.
Innovation Solution
A ring-shaped pressing element with an annular elevation and sloping inner wall design is used, creating areas of different material thicknesses to prevent deformation-induced slippage, ensuring stable contact and sealing while minimizing lateral forces and buckling risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing element is made with standard uniform thickness, then the manufacturing is simpler and cost is lower, but the sensor element may slip off during deformation due to partial contact caused by manufacturing tolerances
Solution Approach 1:
The pressing element features an annular elevation (local thickening) at its center region, creating non-uniform material distribution. This local quality enhancement provides a protruding contact surface that ensures full-surface contact with the sensor element, preventing slippage during deformation while maintaining overall structural simplicity
Solution Approach 2:
The annular elevation is pre-formed on the pressing element before assembly, creating a predetermined contact surface geometry. This preliminary structural preparation ensures that when the pressing element is installed, the sensor element automatically contacts the elevated region, establishing stable contact before any operational deformation occurs
2Volume of moving object
If the component dimensions are reduced for cost reasons, then the component size and cost decrease, but the pressing element cannot maintain adequate contact pressure due to technological limitations
Solution Approach 1:
By concentrating material at the annular elevation, the design achieves high contact pressure at the critical contact interface without requiring the entire pressing element to be large or thick. This localized material concentration maintains adequate contact force even in miniaturized components
Solution Approach 2:
The pressing element's material distribution is segmented into two regions: a thinner outer region and a thicker annular elevation region. This segmentation allows the component to be compact overall while maintaining sufficient material thickness at the contact zone to generate adequate contact pressure
3Manufacturing precision
If the pressing element deforms under load, then it accommodates manufacturing tolerances and ensures contact, but the deformation causes the sensor element to slip off the contact pressure element
Solution Approach 1:
The annular elevation creates a localized rigid zone that resists deformation in the radial direction. When the pressing element deforms under load, the elevated region maintains its shape longer than a uniform thickness element would, preventing the sensor element from slipping off during the deformation process
Solution Approach 2:
The annular elevation acts as a preliminary structural reinforcement that cushions against the harmful effect of deformation-induced slippage. By pre-positioning the sensor element on the elevated surface, the design ensures that even when deformation occurs, the sensor element remains supported on the more rigid annular region
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 effectively prevents sensor element slippage and maintains reliable electrical contact and sealing, even with reduced dimensions, by distributing deformation forces and reducing lateral thrusts, thus enhancing the component's stability and service life.
Implementation Method 1
an elastically deformable pressing element which is inserted into the housing and is held pretensioned
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a pressing element (13) for an electrical component (8) which needs to be pressed against another element for contact, comprising at least one electrically conductive touch contact (9), the pressing element (13) having an annular pressing surface (14) for the component (8), and an outer contour of the pressing surface (14) being greater than an outer contour of the component (8) which needs to be pressed. The pressing surface (13) has an annular elevation (17) which forms a bearing surface (18) for the component (8).