Flexible Housing for Bearingless Angle Sensor Mounting
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Solution Overview
Problem
Bearingless angle-measuring devices face challenges in ensuring precise mounting and maintaining the correct axial distance between rotatable components, which is critical for accurate angular position determination.
Innovation Solution
A scanning unit with a housing body that is axially flexible but torsionally and radially rigid, featuring slots and lands that allow for precise alignment and mounting, along with a contact carrier for electrical connections, ensuring the detector assembly and evaluation electronics are securely positioned and protected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If bearingless angle-measuring devices are used, then device complexity is reduced and ease of manufacture is improved, but mounting precision and axial position stability deteriorate
Solution Approach 1:
The housing body is designed with slots that enable it to be axially flexible (deformable) but torsionally and radially rigid. This dynamic structure allows the housing to adapt during mounting while maintaining measurement precision, resolving the contradiction between ease of manufacture and mounting precision.
Solution Approach 2:
The housing body's mechanical parameters are changed through the slot design, allowing it to transition between flexible and rigid states. This enables precise mounting without requiring complex bearing structures, maintaining both ease of manufacture and mounting precision.
2Stability of the object's composition
If the housing body is made rigid, then structural stability is improved, but adaptability to mounting variations deteriorates
Solution Approach 1:
The housing body incorporates slots that create a dynamic structure - rigid in the radial and torsional directions for stability, but flexible in the axial direction for adaptability. This resolves the contradiction between structural stability and adaptability to mounting variations.
Solution Approach 2:
The housing body is segmented by the slots, dividing it into regions that can move independently. This segmentation allows the housing to maintain overall structural stability while adapting to mounting variations through localized deformations.
3Adaptability or versatility
If the housing body is made flexible, then adaptability to mounting is improved, but structural stability deteriorates
Solution Approach 1:
The housing body is designed with directional flexibility - flexible axially for mounting adaptability but rigid radially and torsionally for structural stability. This dynamic design resolves the contradiction between adaptability and structural stability.
Solution Approach 2:
Different regions of the housing body have different mechanical properties - the slot regions provide flexibility for adaptability while the land regions maintain rigidity for structural stability. This local quality differentiation resolves the contradiction.
Data Source
AI summary
A scanning unit for determining a relative angular position of an angular scale that is rotatable about an axis relative to the scanning unit includes a circuit board having a first surface and a second surface and evaluation electronics. A detector assembly is disposed in a manner that enables scanning of the angular scale located opposite the first surface of the circuit board. A housing body includes: slots extending circumferentially about the axis; lands in each case extending axially between two of the slots such that the housing body is axially flexible but torsionally and radially rigid; and a bottom disposed axially between the slots and the circuit board.