Inclined Spring Vibration Absorber for High-Frequency Tuning
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Solution Overview
Problem
Conventional vibration absorbers have limited adjustability in high-frequency frequency ratios due to the physical properties of elastomeric materials, which is inadequate for the increasing demands of electric vehicles that experience noise and vibrations in higher frequency ranges.
Innovation Solution
A vibration absorber design featuring an absorber mass with inclined insertion sections for spring devices, allowing for adjustable frequency ratios between radial and axial resonance frequencies, and enabling separate manufacturing of elastomeric spring elements to optimize frequency adjustment and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional vibration absorbers use radially or axially arranged spring devices with standard elastomeric materials, then the structure is simple and manufacturing is easy, but the frequency ratio adjustability in the high-frequency range is very limited
Solution Approach 1:
The patent applies asymmetry by designing the insertion section of the supporting body with a specific inclination angle relative to the longitudinal axis of the vibration absorber. This asymmetric geometric configuration allows the spring element to engage at an optimized angle, enabling independent adjustment of radial and axial resonance frequencies. The inclined insertion section creates different effective stiffness characteristics for radial versus axial directions, thereby achieving frequency ratio adjustability that was not possible with conventional symmetric radial or axial spring arrangements.
Solution Approach 2:
The patent utilizes parameter changes by varying the inclination angle of the insertion section to directly control the frequency characteristics. By changing this geometric parameter, the effective stiffness of the elastomeric spring element differs between radial and axial directions, allowing the frequency ratio to be adjusted. Additionally, the spring element itself can be manufactured with varying Shore hardness values to further fine-tune the frequency response, enabling adaptation to different high-frequency vibration scenarios.
2Reliability
If vibration absorbers require preheating of the damper mass for vulcanizing elastomeric spring devices, then the bonding is strong and reliable, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent replaces the thermal vulcanization process with a mechanical retention system. Instead of relying on heat-activated chemical bonding between the elastomeric spring element and the damper mass, the design uses the inclined insertion section geometry to create a mechanical interlock. The spring element is retained by the angled surfaces that prevent removal, eliminating the need for preheating and vulcanization. This substitution of thermal-chemical bonding with mechanical retention simplifies manufacturing while maintaining reliability through the geometric constraint system.
3Strength
If vibration absorbers use integrated spring devices that require preheating and vulcanization, then the spring elements are securely bonded, but the manufacturing time and process complexity increase
Solution Approach 1:
The patent applies segmentation by separating the spring element from the damper mass as independent components that are assembled without thermal processing. The spring element can be manufactured separately as a pre-formed elastomeric component with specific Shore hardness, then inserted into the supporting body's inclined retention feature. This segmentation eliminates the need for integrated vulcanization bonding, allowing parallel manufacturing of components and faster assembly, thereby improving productivity while maintaining secure retention through the mechanical interlock design.
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 design provides improved adjustability in high-frequency ranges, reduces manufacturing costs, and allows for modular configurations with different spring properties and geometries, effectively addressing the limitations of conventional vibration absorbers.
Implementation Method 1
Each of the spring devices (16) may have at least one elastomeric spring element (36) and a supporting body (34). The spring element may be received by the supporting body (34) in such a way that the spring element surrounds the supporting body
Implementation Method 2
The supporting body (34) may have an insertion section (38) for inserting the supporting body (34) and the spring element (36) into the opening (20), which may be inclined relative to a longitudinal axis of the vibration absorber
Data Source
AI summary
A vibration absorber for absorbing and/or damping vibrations, such as of a vehicle part, may include at least one absorber mass having an opening, and at least two spring devices inserted into the opening. The spring devices may have at least one elastomeric spring element and a supporting body. The supporting body may accommodate the elastomeric spring elements. The supporting body may have an insertion section for inserting the supporting body and the elastomeric spring elements into the opening. The insertion section may be inclined relative to a longitudinal axis of the vibration absorber.