Hybrid Power Split Mechanism Spline Connection Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing power transmitting apparatus for hybrid vehicles with a transmission gear mechanism is complex and reduces productivity due to increased components and assembly steps, making the assembly process cumbersome.
Innovation Solution
A power transmitting apparatus with a differential-based power split mechanism and a transmission gear mechanism arranged on the same rotation axis, where the output member of the transmission gear mechanism and the input member of the power split mechanism are connected via a spline or serration, allowing for easier assembly and power transmission by enabling relative movement along the rotation axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a transmission gear mechanism is added to change engine rotation speed, then energy efficiency is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines the transmission gear mechanism and power split mechanism into a single integrated assembly where both mechanisms share common components such as the carrier, sun gear, and ring gear. This merging reduces the overall number of separate components and simplifies the apparatus structure while maintaining the ability to change engine rotation speed for improved energy efficiency.
Solution Approach 2:
The transmission gear mechanism is designed to perform multiple functions: it can operate as a transmission mechanism to change engine rotation speed, and its components (carrier, sun gear, ring gear) also serve as functional elements of the power split mechanism. This multi-functionality reduces device complexity by eliminating redundant components.
2Use of energy by moving object
If a transmission gear mechanism is added to change engine rotation speed, then energy efficiency is improved, but assembly time and productivity decrease
Solution Approach 1:
By integrating the transmission gear mechanism and power split mechanism into a single assembly unit with shared components, the patent reduces the number of separate assembly operations required. The mechanisms can be assembled together in fewer steps, improving productivity while maintaining the energy efficiency benefits of the transmission gear mechanism.
3Ease of manufacture
If the transmission gear mechanism and power split mechanism are integrated on the same rotation axis, then assembly is simplified, but the arrangement requires precise alignment
Solution Approach 1:
The integration of both mechanisms on the same rotation axis with shared components creates a unified assembly where alignment features can be standardized. Common mounting surfaces and interconnected gear elements provide inherent alignment references, making the assembly process easier while maintaining precise alignment through design features rather than requiring post-assembly adjustment.
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 configuration simplifies the assembly process and improves productivity by allowing the power split mechanism and transmission gear mechanism to be easily connected, reducing the complexity and time required for assembling the apparatus.
Implementation Method 1
The second output member and the first input member are connected to each other by a spline or a serration
Data Source
AI summary
A power transmitting apparatus includes a transmission gear mechanism and a power split mechanism including a first rotation element connected to a first input member, a second rotation element connected to a rotary machine, and a third rotation element connected to the drive shaft via a first output member. The transmission gear mechanism is configured to transmit a torque to the first input member and the first rotation element via a second output member. The transmission gear mechanism and the power split mechanism are arranged on the same rotation axis as an output shaft of an engine. The transmission gear mechanism and the power split mechanism are arranged in the order of the transmission gear mechanism and the power split mechanism from the side closer to the engine. The second output member and the first input member are connected to each other by a spline or a serration.