Manual Transmission Driven Elements Extend Housing
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Solution Overview
Problem
Existing manual transmissions with a two-shaft design require multiple versions for different vehicle types and operating conditions, necessitating additional transmission shafts and complex drives for power take-offs and secondary axles.
Innovation Solution
The manual transmission incorporates driven elements extending from the transmission housing to enable multiple applications, including integration of a planetary gear for variable transmission ratios and a hydrostatic drive system, allowing for versatile use across various vehicle types and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional transmission shafts and complicated additional drives are added to existing manual transmissions for power take-offs and second axles, then the transmission can serve different vehicle types and operating conditions, but the device complexity and number of parts increase
Solution Approach 1:
The patent applies multi-functionality by enabling the manual transmission to serve multiple purposes through its existing structure. The transmission housing with two shafts can accommodate different vehicle configurations (light commercial vehicles, passenger cars, pick-ups, off-road vehicles, four-wheel drive vehicles, hybrid vehicles) without requiring additional transmission shafts or complicated additional drives, thereby reducing device complexity while maintaining adaptability
2Adaptability or versatility
If different transmissions are kept available for different vehicle types and operating conditions, then specific vehicle requirements are met, but the quantity of transmissions to be manufactured and stored increases
Solution Approach 1:
The patent implements universality by designing a single manual transmission that can be used across multiple vehicle types and operating conditions. The transmission housing with two shafts and driven elements can be configured for light commercial vehicles, passenger cars, pick-ups, off-road vehicles, four-wheel drive vehicles, and hybrid vehicles, eliminating the need to manufacture and store multiple different transmission sets
3Adaptability or versatility
If a planetary gear is integrated into one of the two shafts to provide variable transmission ratios, then the transmission can operate in lower and higher overall gear ratios, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating a switchable planetary gear directly into one of the two shafts of the manual transmission. This combination allows the transmission to operate in lower and higher overall gear ratios without requiring separate gear sets, thereby expanding the transmission ratio range while minimizing the increase in device complexity through unified design
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The gearbox (1) has input and output shafts (2,3) which are rotatably mounted in gear housing and are alternately switched over by clutches. The input and output shafts which are provided with transmission elements (16-18) are coaxially let out from transmission housing (4).