Preloaded Spring-Mass Damper Assembly Without Material Bonds
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Solution Overview
Problem
Existing damping devices for vehicles are costly and complex to manufacture and assemble, relying on material bonds for connection, which complicates the assembly process.
Innovation Solution
A damping device with a preloaded spring device connected via fastening and support sections that engage in a form-fit and force-fit manner, eliminating the need for material bonds, allowing for simpler and more cost-effective assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If material bonds are used to connect the spring device to the mass element and fastening element, then the connection strength is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces material bonds (chemical/adhesive connections) with a mechanical connection system consisting of a fastening device with fastening sections that engage form-fit and force-fit with corresponding sections on the mass element and fastening element. This mechanical substitution eliminates the need for adhesives or welding while maintaining connection strength and simplifying assembly.
Solution Approach 2:
The spring device is divided into distinct functional sections: a fastening section for mechanical engagement, support sections for positioning, and a damping section. This segmentation allows each part to be optimized independently and assembled through simple mechanical engagement without complex bonding processes.
2Reliability
If material bonds are used to connect the spring device, then the connection reliability is improved, but the assembly time and cost increase
Solution Approach 1:
The fastening sections are designed with pre-configured geometries that guide the assembly process. The form-fit and force-fit engagement features are pre-formed on the mass element and fastening element, allowing the spring device to be quickly connected without requiring additional bonding steps or curing time.
Solution Approach 2:
By replacing material bonds with a mechanical fastening system, the assembly process is simplified to a single mechanical engagement action, eliminating the time-consuming steps of applying adhesives, positioning, and waiting for curing, thereby reducing assembly time while maintaining connection reliability.
3Reliability
If a preloaded spring device is used to connect the mass element to the fastening element, then the vibration damping performance is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent combines the preloading function and the connection function into a single integrated spring device structure. The support sections of the spring device engage with the fastening device to automatically generate the preload force, eliminating the need for separate preloading mechanisms or additional components, thus maintaining simple manufacturing while achieving vibration damping performance.
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 solution enables a cost-effective and efficient damping device assembly by securing the spring device to the mass and fastening elements through a form-fit and force-fit connection, reducing manufacturing complexity and costs.
Implementation Method 1
the mass element vibrates with a 90° phase offset and elevation, with damping of the vibration taking place via the spring device
Implementation Method 2
at least one spring device which connects the mass element to the fastening element in a manner capable of vibrating
Implementation Method 3
Damping devices of the type mentioned above are used in motor vehicle construction to reduce the vibration transmitted from the engine to a vehicle part
Implementation Method 4
the spring device has two circumferential receiving grooves which positively engage around corresponding projections
Implementation Method 5
the mass element or the fastening element having at least one fastening device for fastening the spring device
Data Source
AI summary
A damping device for absorbing and/or damping vibrations of a vehicle part or isolating and/or damping a vibrating vehicle component includes a mass element, a fastening element for fastening the damping device to a vehicle part, and a spring device connecting the mass element to the fastening element to be capable of oscillation. The mass element or fastening element having a fastening device for fastening the spring device. The mass element and/or vehicle part comprises a supporting devices for supporting the spring device, wherein the spring device comprises a fastening device fixed to the fastening means and at least two supporting portions supported in opposite axial direction on the supporting device. The fastening device and supporting device are spaced apart in axial direction such that when supporting sections bear against the supporting device, the spring device is preloaded. The invention relates to a method of assembling a damping device.