Segmented Stator Holder for Torque Sensor Adaptability
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Solution Overview
Problem
Existing torque sensor devices for motor vehicles are limited in their ability to accommodate larger shaft diameters due to the requirement that stator elements must have an inner diameter larger than the fastening sleeve, restricting their use to specific shaft sizes.
Innovation Solution
A stator holder design where the receiving area and fastening area are separate components, allowing for the use of standardized stator elements with larger fastening sleeves and enabling the assembly of torque sensor devices for larger shaft diameters without increasing the stator element size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stator holder uses an integrated receiving area and fastening area with a fastening sleeve, then the stator elements can be securely mounted, but the inner diameter of stator elements must be larger than the fastening sleeve, limiting compatibility to specific shaft sizes
Solution Approach 1:
The stator holder is divided into two separate components: a receiving area component designed to hold stator elements and a fastening area component with the fastening sleeve. This segmentation allows each component to be optimized independently - the receiving area can accommodate stator elements of any size while the fastening area adapts to different shaft diameters, thereby resolving the contradiction between versatility and structural integration.
2Adaptability or versatility
If standardized stator elements are used, then manufacturing costs are reduced, but they cannot accommodate larger shaft diameters without increasing stator element size
Solution Approach 1:
By separating the stator holder into receiving area and fastening area components, the system allows standardized stator elements to be used with larger shaft diameters. The fastening area component with its adjustable fastening sleeve handles the adaptation to larger shafts, while the receiving area component maintains compatibility with standardized stator elements, thus resolving the contradiction without increasing stator element dimensions.
Solution Approach 2:
The separate fastening area component acts as an intermediary between the standardized stator elements and the larger shafts. This intermediary component with the fastening sleeve provides the necessary adaptation, allowing standardized stator elements to work with larger shaft diameters without requiring modification to the stator elements themselves.
3Adaptability or versatility
If separate components are used for receiving area and fastening area, then compatibility with larger shaft diameters is enabled, but assembly complexity increases
Solution Approach 1:
While segmentation into separate receiving area and fastening area components enables compatibility with larger shaft diameters, the design facilitates easy assembly through modular construction. The components can be manufactured independently using standardized processes and assembled in a straightforward sequence, minimizing the increase in assembly complexity.
Data Source
Figure 1a
Figure 1b~1d
Figure 2
AI summary
The invention relates to a stator holder (11) for a torque sensor device for detecting a torque which is applied to a shaft, in particular for detecting a torque which is applied to a steering shaft of a motor vehicle, and to a stator module (20) having a stater holder (11) of this type, to a method for assembling a stator module (20) of this type, to a torque sensor device having a stator holder (11) of this type, and to a motor vehicle having a torque sensor device of this type. Here, the stator holder (11) has a receiving region (12) which extends in the axial direction along a rotational axis of the stator holder (11), and a fastening region (13) which adjoins the receiving region (12) in the axial direction in a functional state of use and extends in the axial direction along the rotational axis of the stator holder (11), wherein the receiving region (12) is configured for receiving a first stator element (14A) and a second stator element (14B) on the stator holder (11), and wherein the fastening region (13) has a fastening sleeve (13A) for fastening the stator holder (11) fixedly on the shaft so as to rotate with it. Here, the receiving region (12) and the fastening region (13) are formed by way of separate components and/or separate modules.