Torque Detection Device Asymmetric Holding Ring
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Solution Overview
Problem
The existing torque detection devices face difficulties in accurate positioning within the housing due to similar-shaped ends, leading to potential incorrect attachment directions, which can result in reversed electrical signal phases and increased complexity in assembly.
Innovation Solution
Incorporating a holding ring with an attachment-preventing convex part on one end face and a symmetric design in the axis line direction, allowing for correct orientation and preventing attachment in the wrong direction, along with a flange and screw mechanism for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the holding ring has similar-shaped ends in the axis line direction, then the device can be easily manufactured, but the device cannot prevent incorrect attachment direction
Solution Approach 1:
The holding ring incorporates an attachment-preventing convex part on one end face to create asymmetry. This convex part protrudes toward the interior of the housing and prevents the holding ring from being attached in the wrong direction, thereby solving the reliability issue while maintaining manufacturing simplicity
2Ease of operation
If the holding ring is inserted from the radially outward side, then the assembly process is simplified, but incorrect insertion direction cannot be prevented
Solution Approach 1:
The attachment-preventing convex part creates an asymmetric configuration that allows insertion from the radially outward side while preventing insertion from the opposite direction. The convex part acts as a mechanical stop that ensures correct orientation during assembly
3Device complexity
If no attachment-preventing structure is provided, then the device complexity is reduced, but phase reversal of electrical signals occurs due to incorrect attachment
Solution Approach 1:
The attachment-preventing convex part is a simple asymmetric structure that prevents incorrect attachment direction, thereby preventing phase reversal of electrical signals without significantly increasing device complexity. The structure adds minimal complexity while ensuring reliable signal output
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
Ensures reliable attachment in the correct direction, preventing incorrect insertion and phase reversals in electrical signals, thereby simplifying the assembly process and ensuring proper operation of the torque detection device.
Implementation Method 1
a magnetic flux collecting ring arranged outside an outer periphery of a magnetic circuit forming member which is provided in a rotating body applied with a torque, the magnetic flux collecting ring for collecting a magnetic flux generated by the magnetic circuit forming member
Data Source
AI summary
A torque detection device has a magnetic flux collecting ring, arranged outside an outer periphery of a magnetic circuit forming member which is provided in a rotating body applied with a torque, for collecting a magnetic flux generated by the magnetic circuit forming member; a detector for detecting the torque applied to the rotating body based on a density of the magnetic flux collected by the magnetic flux collecting ring; and a holding ring for holding the magnetic flux collecting ring and the detector and including an attachment part to be attached to a stationary object on an outer periphery on one side in a radial direction. An attachment-preventing convex part for preventing attachment to the stationary object by contacting the stationary object is formed on one end face in an axis line direction of the holding ring.