Transmission Gear Shifting Assembly With Shared P-Gear Drive
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Solution Overview
Problem
Current gear shifting mechanisms in automobile transmissions are complex, leading to high manufacturing costs, increased risk of oil leakage and transmission failure, and inefficient energy use, particularly in hydraulic systems, and motor control solutions do not achieve smooth gear shifting.
Innovation Solution
A gear shifting assembly that integrates a P-gear mechanism and forward-gear mechanism with a common drive mechanism, utilizing a P-gear cam and gear shifting cam with specifically designed curved surfaces to allow simultaneous operation without interference, reducing energy consumption and improving reliability by ensuring only one mechanism is operational at a time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hydraulic system is used to control gear shifting, then smooth gear shifting can be achieved, but the structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent replaces the hydraulic control system with a direct mechanical control mechanism. The control fork directly engages with the gear shifting mechanism through mechanical linkages, eliminating the need for hydraulic pumps, oil paths, and actuating pistons. This mechanical substitution maintains smooth gear shifting while significantly simplifying the overall structure and reducing manufacturing costs.
2Productivity
If a hydraulic system is used to control gear shifting, then gear shifting function is achieved, but the risk of oil leakage and transmission failure increases
Solution Approach 1:
The patent eliminates hydraulic components that are prone to oil leakage and failure by using a purely mechanical control system. The control fork and associated mechanical linkages provide reliable, maintenance-free operation without the risks associated with hydraulic seals and fluid systems, thereby improving transmission reliability while maintaining full gear shifting functionality.
3Productivity
If separate motors are used to control forward gears and parking, then gear shifting can be achieved, but the structure becomes complicated and space occupied increases
Solution Approach 1:
The patent combines the control of forward gears and parking mechanism into a single integrated control system. The control fork serves dual purposes: it controls the shifting of forward gears through one set of linkages and the engagement of the parking mechanism through another set of linkages. This merging of functions eliminates the need for separate motors and control systems, thereby simplifying the structure and reducing the space occupied in the transmission assembly.
4Productivity
If separate motors are used to control forward gears and parking, then gear shifting can be achieved, but the space occupied increases
Solution Approach 1:
The patent integrates both forward gear control and parking mechanism control into a single control fork assembly. This unified structure eliminates the need for separate motors and control linkages that would otherwise occupy additional space within the transmission housing. The compact integrated design reduces the overall volume required for the gear shifting system while maintaining full functionality.
5Productivity
If multiple separate control mechanisms are used, then comprehensive gear control is achieved, but energy consumption increases
Solution Approach 1:
The patent employs a single control fork that mechanically links to both the forward gear shifting mechanism and the parking mechanism. This unified control system eliminates the need for multiple separate motors and their associated energy consumption. The mechanical linkages efficiently transmit force from the control fork to both functions, significantly reducing overall energy consumption while maintaining comprehensive gear control capability.
Data Source
AI summary
A gear shifting assembly of a transmission, a transmission, and an automobile. The present disclosure aims to address the problem of complicated structure existing in a gear shifting assembly or the like. To this end, the gear shifting assembly of a transmission according to the present disclosure includes a P-gear mechanism and a forward-gear mechanism, wherein the gear shifting assembly further includes a drive mechanism and a shifting mechanism, and the shifting mechanism is configured to be capable of switching the drive mechanism so that the P-gear mechanism or the forward-gear mechanism is in an operational state. By employing the common drive mechanism, the gear-shifting function of forward gears and the function of parking at the P-gear can be realized without interference, and on the basis of function integration, elements are saved so that the gear shifting assembly is made more compact in structure.