Electric Locking Differential Mechanism With Integrated Axle Engagement
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Solution Overview
Problem
Traditional electric locking differential mechanisms have complex structures, high costs, and space inefficiencies, making them difficult to control and assemble, which hinders their implementation in electric vehicles.
Innovation Solution
A simplified differential mechanism with a shell, power engagement device, and engagement portion drive device that locks the left and right half axles using a drive pin and drive portion, reducing parts and size while enhancing mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional electric locking differential mechanism is used, then the vehicle mobility can be improved, but the structure becomes complicated with many parts
Solution Approach 1:
The patent merges the locking mechanism and differential mechanism into a single integrated structure. The locking pin is directly formed on the differential shell, and the engagement teeth are integrated with the differential components, eliminating the need for separate locking mechanisms and reducing overall structural complexity while maintaining mobility improvement functionality
2Reliability
If a traditional electric locking differential mechanism is used, then the vehicle mobility can be improved, but the number of parts increases resulting in high cost
Solution Approach 1:
The patent combines multiple functions into fewer components. The differential shell serves as both the housing and the locking mechanism carrier, the planet wheel axle serves as both the rotation axis and engagement component, eliminating the need for separate locking pins, engagement devices, and control mechanisms, thereby reducing part quantity and cost
3Reliability
If a traditional electric locking differential mechanism is used, then the vehicle mobility can be improved, but the space occupied increases
Solution Approach 1:
The patent nests the locking mechanism within the differential housing structure. The locking pin is formed as an integral part of the differential shell, and the engagement teeth are positioned within the existing differential component boundaries, allowing the locking functionality to be nested within the compact differential assembly without increasing overall space occupation
4Reliability
If a traditional electric locking differential mechanism is used, then the vehicle mobility can be improved, but the assembling difficulty increases
Solution Approach 1:
The patent integrates the locking mechanism as an integral part of the differential shell rather than a separate assembly. The locking pin is formed directly on the shell, and the engagement teeth are built into the differential components, eliminating multiple assembly steps and reducing assembling difficulty while maintaining the mobility improvement capability
Data Source
AI summary
The present specification discloses a differential mechanism and a vehicle. The differential mechanism includes a shell. A left half axle gear, a right half axle gear, a planet wheel and a planet wheel axle are disposed in the shell. The planet wheel is rotatably mounted on the planet wheel axle and meshes with the left half axle gear and the right half axle gear. A power engagement device includes a first engagement portion and a second engagement portion. The first engagement portion is connected with the left half axle gear or the right half axle gear, and the second engagement portion rotates synchronously with and moves axially relative to the shell. An engagement portion drive device includes a drive pin and a drive portion. The drive portion is configured to drive the drive pin to drive the second engagement portion close to the first engagement portion along an axial direction.