Torque Transmission Joint With Preliminary Engagement Backup
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Solution Overview
Problem
Conventional torque transmission joints in electric power steering devices face issues with maintaining continuous torque transmission between end section transmission members when the torque transmission function of the intermediate transmission member deteriorates.
Innovation Solution
The torque transmission joint incorporates an intermediate transmission member with an intermediate concave-convex section and a pair of end section transmission members, featuring preliminary engagement sections that adjust their engagement based on the torque transmission function, allowing for continuous torque transmission by changing the engagement state between the end section transmission members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the end section transmission members are rigidly connected through the intermediate transmission member, then torque transmission efficiency is high, but misalignment tolerance is reduced
Solution Approach 1:
The torque transmission joint is segmented into multiple independent engagement sections: preliminary engagement sections and main concave-convex engagement sections. This segmentation allows each section to function independently, enabling the system to tolerate misalignment while maintaining torque transmission capability through the flexible arrangement of these segments.
Data Source
AI summary
The torque transmission joint includes an intermediate transmission member, and a first transmission member and a second transmission member that are arranged with one each on both side sections in the axial direction of the intermediate transmission member, with the outer side sections in the radial direction of each engaging with the inside section in the radial direction of the intermediate transmission member. The first transmission member and the second transmission member have a first preliminary engagement section and a second preliminary engagement section at the end sections in the axial direction on sides close to each other. The first preliminary engagement section and the second preliminary engagement section engage with each other with a circumferential gap interposed therebetween that does not disappear when torque transmission is performed between the first transmission member and the second transmission member via the intermediate transmission member.