Transmission Assembly Guide Pin Alignment
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Solution Overview
Problem
During the assembly of a transmission to an internal combustion engine, engine components protruding towards the transmission side can collide with the transmission-side joining surface, potentially damaging the engine components.
Innovation Solution
The implementation of a guide pin and guide hole system on the engine-side and transmission-side joining surfaces, respectively, allows for controlled alignment and positioning of the transmission housing, preventing collisions with protruding engine components like the power steering pump by guiding the transmission-side joining surface during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission is assembled by directly joining the transmission-side joining surface to the engine-side joining surface, then the assembly process is simple and fast, but the protruding engine component may be damaged due to collision with the transmission-side joining surface
Solution Approach 1:
A guide member is introduced as an intermediary component between the transmission-side joining surface and the engine-side joining surface. The guide member includes a guide surface that abuts on the protruding engine component during assembly, mediating the interaction and preventing direct collision damage while enabling controlled positioning
Solution Approach 2:
The guide member is positioned in advance on the engine-side joining surface to preemptively protect the protruding engine component. By establishing this protective interface before the transmission housing makes contact, the system prevents the harmful collision effect from occurring
2Reliability
If a guide member is added to protect the engine component, then the component integrity is improved, but the device complexity increases
Solution Approach 1:
The guide member serves multiple functions simultaneously: it protects the protruding engine component from damage, guides the transmission housing during assembly to ensure proper positioning, and provides a stable abutting surface for the transmission-side joining surface. This multi-functionality reduces the need for separate protective and guiding components
Data Source
Figure 1
Figure 2
AI summary
A transmission assembly structure includes an engine-side joining surface (3), which is formed on a flywheel housing (2) of an internal combustion engine (1), a transmission-side joining surface (6), which is formed on a transmission housing (5) of a transmission (4) and is joined to the engine-side joining surface (3), an engine component (25) which is provided on an outside of the engine-side joining surface (3) in a radial direction in the flywheel housing (2) and protrudes toward the transmission side with respect to the engine-side joining surface (3), a guide member (30) which is provided on the engine-side joining surface (3) or in the vicinity of the engine-side joining surface (3) of the flywheel housing (2) and in a vicinity of the engine component (25) and which protrudes toward the transmission side further than the engine component (25) with respect to the engine-side joining surface (3), and a guide hole (31), which is provided on the transmission-side joining surface (6) of the transmission housing (5) or in the vicinity of the transmission-side joining surface (6) and into which the guide member (30) is inserted.