Mid-Shaft Cam Damper Structure for Flexible Drive Shaft Placement
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Solution Overview
Problem
There is a need for a vehicle cam damper structure that can be disposed compactly and with degrees of freedom on a drive shaft, which connects the engine to the drive wheel, allowing for flexible placement and compatibility with various vehicle models.
Innovation Solution
A vehicle cam damper structure is designed with a cam damper integrated at a midway portion of the drive shaft, featuring a cam reception portion, a cam, a shaft member, an elastic member, and an outer cylinder, allowing for relative rotation and axial sliding, with engagement portions and sealing members for secure and airtight connection, enabling independent placement and compatibility with different drive shaft configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cam damper is disposed on the drive shaft, then the drive shaft can be connected via a universal joint with degrees of freedom, but the structure becomes more complex and machining requirements increase
Solution Approach 1:
The cam damper is designed as a separate, modular unit that can be independently disposed on different portions of the drive shaft. The damper assembly includes distinct components (outer cylinder, cam, shaft member, elastic member) that function as an integrated module, allowing flexible placement without complicating the overall drive shaft structure
Solution Approach 2:
The cam damper is designed with universal engagement portions that can connect to various drive shaft configurations through standardized spline connections. The engagement portions with splines allow the same cam damper design to be applied across different vehicle models and drive shaft types, achieving multi-functionality and adaptability
2Adaptability or versatility
If the cam damper is disposed on the drive shaft, then placement freedom is achieved, but connection and sealing requirements become more stringent
Solution Approach 1:
The engagement portions are pre-formed with splines that automatically align and engage with corresponding splines on the drive shaft. The elastic member is pre-compressed between the cam and shaft member to ensure immediate sealing and secure connection upon assembly, eliminating the need for additional sealing operations
Solution Approach 2:
The elastic member acts as an intermediary element that provides both mechanical connection and sealing function. By disposing the elastic member between the cam and shaft member, it mediates the connection between moving and stationary parts while maintaining airtight sealing through its resilient properties
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
The cam damper structure allows for independent placement on any part of the drive shaft, ensuring secure and airtight connections, and can be applied to any vehicle model, maintaining a sound deadening effect and simplifying machining requirements for connection.
Implementation Method 1
an elastic member (150) that presses the cam (130) toward a side of the cam reception portion (140) is disposed between the enlarged-diameter portion (126) and the cam (130)
Data Source
AI summary
In a vehicle cam damper structure, a drive shaft includes a cam damper at a midway portion thereof. The cam damper integrates a cam reception portion with a cam via a shaft member. The cam reception portion is connected relatively rotatably with the shaft member. The cam and the shaft member, while being integrally rotatable, are connected with each other axially slidably. The shaft member includes an enlarged-diameter portion. An elastic member that presses the cam toward a side of the cam reception portion is disposed between the enlarged-diameter portion and the cam. An outer cylinder extends across the cam reception portion and the shaft member. A drive-side shaft and a driven-side shaft of the drive shaft are each connected with corresponding one of the cam reception portion and the shaft member.