Torque Sensor Rotor Serration for Precise Center Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional torque sensor center adjustment methods using frictional force are prone to slipping and lack precision, making fine adjustments difficult in steering systems.
Innovation Solution
The torque sensor incorporates an anti-slip structure with serrations or micro grooves on the yoke and sleeve to enhance frictional force transmission between the jig and rotor, ensuring reliable and precise rotation force transmission during center adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a jig rotates the outer circumference of the sleeve by frictional force to adjust the center, then the center adjustment can be performed, but the jig may slip from the sleeve making it difficult to finely adjust the center
Solution Approach 1:
The patent applies local quality by creating serrations (local structural modification) on the outer circumference of the sleeve where the jig contacts it. This localized change increases friction only at the contact interface without affecting other parts of the sleeve, thereby preventing slip during center adjustment while maintaining the overall simplicity of the rotor structure.
Solution Approach 2:
The patent utilizes curvature by forming circumferential grooves (curved structural features) on the sleeve surface. These grooves create a mechanical interlocking profile that enhances the frictional engagement between the jig and sleeve, providing reliable force transmission during rotational adjustment operations.
2Device complexity
If the outer circumference of the sleeve is smooth, then the structure is simple, but the frictional force is insufficient for precise rotation force transmission
Solution Approach 1:
The patent applies local quality by creating serrations (local structural modification) on the outer circumference of the sleeve where the jig contacts it. This localized change increases friction only at the contact interface without affecting other parts of the sleeve, thereby preventing slip during center adjustment while maintaining the overall simplicity of the rotor structure.
Solution Approach 2:
The patent utilizes curvature by forming circumferential grooves (curved structural features) on the sleeve surface. These grooves create a mechanical interlocking profile that enhances the frictional engagement between the jig and sleeve, providing reliable force transmission during rotational adjustment operations.
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 allows for precise and reliable fine adjustments of the torque center, enhancing the operational reliability of steering systems by preventing slipping and ensuring consistent force transmission.
Implementation Method 1
a serration formed on an upper end of the yoke in a circumferential direction thereof, the serration coming into contact with a lower end of the jig during the rotating process for adjusting the center, thus transmitting the rotating force from the jig to the yoke
Data Source
Figure 1~2
Figure 3~4
AI summary
Disclosed is a rotor for a torque sensor configured to improve a mechanical coupling force with respect to a jig in a process of adjusting a torque center, thus enabling a fine adjustment, the rotor including a rotor body (10) comprising a sleeve (40) having a first outer circumference and a yoke (30) having a second outer circumference, a magnet (20) provided around the second outer circumference of the yoke (30) and a serrated portion (31) having a plurality of serrations arranged in a circumferential direction of the rotor body (10), wherein each of the plurality of serrations extends in a radial direction of the rotor body and wherein the serrated portion (31) is formed on an upper end of the yoke (30).