Torque Fluctuation Absorber With Curved Side-Plate Reinforcement
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Solution Overview
Problem
The existing torque fluctuation absorbing apparatuses have unstable sliding surfaces and insufficient axial strength in the limiter portion, leading to unstable characteristics.
Innovation Solution
The apparatus includes reinforcing portions on the side plates, which are axially curved and connected with a connecting member to enhance the axial strength, and an elastic member biases the pressure plate to improve the stability of the limiter portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lining support plate is attached to the flywheel by a bolt at a radially outward position, then the limiter portion can generate slippage to absorb torque fluctuations, but the axial strength of the side plates becomes insufficient and the sliding surfaces become unstable
Solution Approach 1:
The invention transitions from a flat side plate structure to a three-dimensional structure by adding axially curved reinforcing portions. These portions extend in the axial direction and curve toward the other side plate, creating a spatial reinforcement that increases axial strength without interfering with the radial slippage function of the limiter portion.
Solution Approach 2:
The reinforcing portions are designed with axial curvature, bending toward the opposite side plate. This curvature provides structural reinforcement similar to arches in architecture, distributing axial loads more effectively and increasing the overall axial strength of the side plates while maintaining the necessary flexibility for torque absorption.
2Weight of moving object
If the side plates are made thinner to reduce weight, then the apparatus becomes lighter, but the axial strength and stability of the limiter portion deteriorate
Solution Approach 1:
The side plates are segmented into functional zones: the central sliding surface area remains thin for weight reduction, while the reinforcing portions are added as separate structural elements. This segmentation allows the sliding surfaces to maintain their low-friction characteristics while the reinforcing portions provide the necessary axial strength support.
Solution Approach 2:
The side plate structure combines thin plate material with axially curved reinforcing portions, creating a composite structural system. This composite approach allows the main plate to remain lightweight while the reinforcing portions provide enhanced axial strength, achieving both weight reduction and strength improvement.
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 enhanced axial strength and stability of the side plates improve the performance of the limiter portion, ensuring consistent torque absorption and reduced slippage, thereby stabilizing the characteristics of the torque fluctuation absorbing apparatus.
Implementation Method 1
an elastic member that supports the second side plate and that biases the pressure plate toward the lining plate
Implementation Method 2
the lining plate is slidably sandwiched between the first side plate and the pressure plate
Implementation Method 3
the first side plate and the second side plate each include a reinforcing portion that includes a portion which is axially curved at a location which is radially outward relative to the connecting member
Data Source
Figure 1
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Figure 3
AI summary
A torque fluctuation absorbing apparatus includes a first side plate (12), a second side plate (13), a lining plate (11) disposed between the side plates, a connecting member (18) that connects the side plates at a position that is radially inward relative to the lining plate, a pressure plate (14) disposed between the second side plate and the lining plate, and an elastic member (15) that biases the pressure plate toward the lining plate. The lining plate is slidably sandwiched between the first side plate and the pressure plate, and the first and second side plate each includes a reinforcing portion that includes a portion that is axially curved at a location that is radially outward relative to the connecting member.