Rod-Shaped Magnetic Sensor Integrated Sealing Sleeve
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Solution Overview
Problem
Existing magnetic field sensors for vehicle transmissions require additional assembly steps and materials for sealing, which can lead to leakage and mechanical issues due to the need for separate sealing adhesives and potential mechanical overload during screwing.
Innovation Solution
A rod-shaped magnetic field sensor with a threaded sleeve integrated with an elastically deformable axial sealing element that forms a single component, providing a radially projecting axial sealing collar to ensure reliable sealing and mechanical tension without additional assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing adhesive is provided at the screw-in point between the outer wall of the gear housing and the magnetic field sensor, then sealing is achieved, but additional production material and assembly steps are required
Solution Approach 1:
The sealing element is integrated directly into the threaded sleeve as a single component, merging the sealing function with the structural component. This eliminates the need for separate sealing adhesives and reduces assembly steps while maintaining reliable sealing at the screw-in point.
Solution Approach 2:
The elastically deformable sealing element automatically adapts to the housing surface during screwing, providing self-sealing functionality without requiring additional adhesives or complex assembly procedures. The sealing element serves its own sealing function through its elastic deformation capability.
2Reliability
If a sealing adhesive is applied at the screw-in point, then sealing is achieved, but the assembly process becomes more complex with additional steps
Solution Approach 1:
The sealing element is integrated directly into the threaded sleeve as a single component, merging the sealing function with the structural component. This eliminates the need for separate sealing adhesives and reduces assembly steps while maintaining reliable sealing at the screw-in point.
3Strength
If the threaded sleeve is screwed into the housing, then mechanical connection is achieved, but the sealing element may be overloaded during screwing
Solution Approach 1:
The threaded sleeve features a larger outer diameter in the region adjacent to the sealing element compared to the thread region. This local geometric variation distributes mechanical loads away from the sealing element during screwing, preventing overload while maintaining strong mechanical connection through the threads.
Solution Approach 2:
The geometric design of the threaded sleeve预先 cushions the sealing element by creating a load distribution zone through the larger diameter region, protecting the sealing element from excessive stresses during the screwing process before they can cause damage.
4Reliability
If separate sealing adhesives are used, then sealing is achieved, but additional production materials and assembly steps are required
Solution Approach 1:
The sealing element is integrated directly into the threaded sleeve as a single component, merging the sealing function with the structural component. This eliminates the need for separate sealing adhesives and reduces assembly steps while maintaining reliable sealing at the screw-in point.
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 integrated axial sealing element ensures a secure, leak-proof connection and mechanical tension, eliminating the need for separate sealing adhesives and protecting electronic components from environmental influences while maintaining a compact structure.
Implementation Method 1
the threaded sleeve has a radially projecting axial sealing element which is elastically deformable in the axial direction
Data Source
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AI summary
The invention relates to a rod-shaped magnetic field sensor 1 with an outer housing 4 having an external thread 2 and an axial sealing collar 6 of the magnetic field sensor 1, wherein the outer housing 4 has a threaded sleeve 8 having the external thread 2 and the axial sealing collar 6. For a simple construction of the magnetic field sensor and simultaneously enabling good sealing of a screw-in point receiving the magnetic field sensor 1 in an installation case, the invention proposes that the threaded sleeve 8 have a radially projecting axially deformable axial sealing element 20, wherein the axial sealing element 20 is connected to the threaded sleeve 8 as a single component and forms the axial sealing collar 6 on its outer surface facing the external thread 2 of the threaded sleeve 8 in the axial direction.