Output Shaft Dynamic Vibration Absorber for Torque Fluctuation Control
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Solution Overview
Problem
Existing damper devices in vehicles fail to effectively inhibit fluctuations in rotational velocity between the engine and transmission, limiting compatibility with different engine settings.
Innovation Solution
A damper device configuration that includes a dynamic vibration absorber attached to the output shaft, featuring a base member, mass body, and a centrifugal element with a cam mechanism, which converts centrifugal force into a circumferential force to reduce rotational fluctuations, while maintaining compatibility with various engine settings by not altering the damper device body structure significantly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dynamic vibration absorber is attached to the damper device body, then rotational velocity fluctuations can be inhibited, but the structure of the damper device body becomes greatly different from well-known structures, reducing compatibility with different engine settings
Solution Approach 1:
The dynamic vibration absorber is segmented from the damper device body and attached to the output shaft instead. This separation allows the absorber to be independently configured on the output shaft while maintaining the original damper device body structure, thus achieving both vibration inhibition and compatibility with different engine settings.
2Reliability
If the damper device body structure is significantly modified to attach the dynamic vibration absorber, then rotational velocity fluctuations are inhibited, but the device complexity increases
Solution Approach 1:
The dynamic vibration absorber is extracted from the damper device body structure and independently attached to the output shaft. This extraction eliminates the need to modify the damper device body, thereby maintaining simple original structure while still achieving the function of inhibiting rotational velocity fluctuations through the absorber's independent operation.
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 effectively inhibits rotational velocity fluctuations, ensuring compatibility with different engine settings without modifying the damper device body structure, thereby enhancing torque transmission stability.
Implementation Method 1
The centrifugal element is disposed to receive a centrifugal force generated by rotation of the output shaft
Implementation Method 2
The cam mechanism converts the centrifugal force acting on the centrifugal element into a circumferential force
Implementation Method 3
The dynamic vibration absorber includes a base member and a mass body. The mass body is disposed to be rotatable relative to the base member. The mass body sways with respect to the base member in a circumferential direction
Data Source
AI summary
A damper device includes a damper device body, an output shaft and a dynamic vibration absorber. The damper device body includes an input member and an output member. The input member and the output member are coupled to be rotatable relative to each other. The output shaft outputs a torque transmitted to it from the damper device body. The dynamic vibration absorber is attached to the output shaft.