Spring Seat Stiffness via Embedded Reinforcing Plate
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Solution Overview
Problem
Conventional spring seats in damper disk assemblies have low stiffness, leading to reduced effectiveness in dampening torsional vibrations due to increased frictional resistance caused by centrifugal forces, which diminishes the ability of the damper disk assembly to absorb and attenuate torsional vibrations.
Innovation Solution
The use of a spring seat with a plastic first support component, a plastic second support component, and a metal reinforcing plate, where the reinforcing plate is embedded in or protrudes from the support components to enhance the overall stiffness, thereby reducing elastic deformation and frictional resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the stiffness of the spring seat is low, then the spring seat can be made from plastic material, but the sliding component elastically deforms under centrifugal force causing increased frictional resistance and reduced vibration damping ability
Solution Approach 1:
The spring seat is constructed as a composite structure combining plastic support components with an embedded metal reinforcing plate. The plastic first and second support components provide the basic structure and damping characteristics, while the metal reinforcing plate embedded within them provides the necessary stiffness to prevent elastic deformation under centrifugal force, thereby reducing frictional resistance between the spring seat and input rotor.
2Reliability
If the stiffness of the spring seat is increased to reduce elastic deformation, then the ability to dampen torsional vibration is improved, but the structure becomes more complex requiring metal reinforcing plates
Solution Approach 1:
The metal reinforcing plate is nested within the plastic support components, with the reinforcing plate embedded in the first and/or second support components. This nesting approach integrates the stiffening function within the existing plastic structure rather than adding separate external components, thereby improving torsional vibration damping reliability while minimizing structural complexity.
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 increased stiffness of the spring seat improves the damper disk assembly's ability to attenuate torsional vibrations and enhances durability by minimizing sliding and wear between the spring seats and other components, maintaining effective vibration damping even under centrifugal forces.
Implementation Method 1
a plastic first support component (63), a plastic second support component (64), and a metal reinforcing plate (66). At least part of the reinforcing plate (66) is embedded in the first and/or second support component
Implementation Method 2
the coil springs are compressed in the rotational direction between the two rotors, which causes the torsional vibration inputted to the input rotor to be absorbed and dampened
Implementation Method 3
since the coil springs are subjected to centrifugal force, when they are compressed they move to the outside in the radial direction
Implementation Method 4
the sliding component supports the ends of the coil springs in the radial direction. This prevents the coil springs from sliding over the support component. If a spring seat has relatively low stiffness, however, when the coil springs are subjected to a strong centrifugal force, the sliding component is subjected to a large load to the outside in the radial direction
Data Source
AI summary
Second spring seats 62 each have a first support component 63, a second support component 64, and a reinforcing plate 66. The first support component 63 supports the ends of second coil spring 61a in the rotational direction. The second support component 64 extends in the rotational direction from the first support component 63 and supports the end of the second spring 61a in the radial direction. At least part of the reinforcing plate 66 is embedded in at least one of the first and second support components 63 and 64. The reinforcing plate 66 directly or indirectly supports the end of the second spring 61a along with the first and second support components 63 and 64.