A bearing, electric machine, suspension system and vehicle
By designing straight cylindrical and tapered cylindrical surfaces on the inner wall of the bearing, the axial resistance problem between the bearing and the sliding parts is solved, the wear risk is reduced, and the stability and production efficiency of the motor are improved.
CN122107002APending Publication Date: 2026-05-29BYD CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2024-11-29
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
In existing technologies, the axial resistance between the bearing and the sliding parts is relatively large, and the rotating rod is at risk of cracking. High precision is required for processing and assembly, which affects production efficiency.
Method used
The bearing design employs an inner wall surface that includes both straight and tapered surfaces. The tapered surface guides the movement of the guide rod, avoiding stress concentration and reducing axial resistance. Furthermore, the transition surface and guide ramp optimize sliding contact to ensure stability.
Benefits of technology
This effectively reduces the axial resistance of the guide rod, slows down bearing wear, and improves the motor's operational stability and production efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122107002A_ABST
Abstract
The application discloses a bearing, a motor, a suspension system and a vehicle, and relates to the technical field of vehicles, and aims to solve the problem of large axial resistance between the bearing and a sliding part. The bearing comprises an inner wall surface, the inner wall surface surrounds a containing hole, and the containing hole is used for containing the sliding part. The inner wall surface comprises a straight cylinder surface and a tapered cylinder surface arranged along the axial direction of the bearing, and the first end of the tapered cylinder surface is located on the side of the second end of the tapered cylinder surface which is away from the straight cylinder surface. Along the axial direction of the bearing, the axial size b of the tapered cylinder surface satisfies 0.06h<=b<=0.5h, wherein h is the length of the bearing along the axial direction of the bearing.
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