Vibration reducing mounting
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Solution Overview
Problem
Existing vibration reduction methods, such as mass-spring mechanisms, suffer from limited effective operating range, noise generation due to coil contact, and inefficient material use, particularly in household appliances like pumps and motors.
Innovation Solution
A vibration reducing mounting system utilizing a wire with a path that includes an open loop ring and sequences of bends, providing increased bending stiffness and shifting local resonance modes to higher frequencies, thus expanding the effective operating range for vibration isolation while maintaining a low profile and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a coil spring is used for vibration isolation, then vibration reduction is achieved, but noise is generated due to coil contact and rubbing
Solution Approach 1:
The continuous coil spring is segmented into discrete bends along the wire path. These bends create isolated deformation zones that prevent continuous coil-to-coil contact, thereby reducing noise generation while maintaining vibration isolation capability through controlled elastic deformation at each bend section
Solution Approach 2:
The harmful coil-to-coil contact mechanism is extracted and replaced by a bend-based deformation mechanism. The wire path is designed to concentrate elastic deformation at specific bend locations rather than allowing distributed coil rubbing, thereby eliminating the noise source while preserving the vibration damping function
2Object-affected harmful factors
If multiple coils are used to achieve low spring constant, then vibration isolation is improved, but the effective operating range becomes narrow due to low resonance frequency
Solution Approach 1:
Different sections of the wire path serve different functions: the open loop ring provides mounting and initial compliance, while the multiple bends along the limbs provide localized deformation zones. This local quality differentiation allows the structure to achieve low spring constant through distributed bend compliance rather than requiring many coils, thereby expanding the operating frequency range
Solution Approach 2:
The wire path transitions from a planar coil configuration to a three-dimensional structure with bends occurring in multiple planes. This dimensional change allows elastic deformation to occur through out-of-plane bending at each bend section, achieving the required compliance without increasing the number of coils, thus avoiding the associated resonance frequency limitations
3Force
If the wire length is increased to reduce spring constant, then more material is used, but the structure becomes less efficient and more prone to resonance
Solution Approach 1:
The spring constant is controlled by changing the geometric parameters of the bends (angle, radius, section length) rather than by increasing wire length. Each bend acts as a compliant element whose stiffness can be tuned by its geometry, allowing achievement of low spring constant with minimal material while avoiding the resonance issues associated with long wire spans
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 enhances vibration isolation performance, increases the effective operating range, and reduces noise by shifting local resonance modes to higher frequencies, providing better damping and reduced material usage compared to traditional coil spring designs.
Implementation Method 1
A vibration reducing mounting comprising a wire which follows a path which comprises: a mounting portion supporting the vibration inducing component, a first limb extending outwardly from the one end of the mounting portion, wherein the first limb comprises a first sequence of bends, and a second limb extending outwardly from the opposite end of the mounting portion, wherein the second limb comprises a second sequence of bends
Implementation Method 2
providing increased bending stiffness and shifting local resonance modes to higher frequencies, thus expanding the effective operating range for vibration isolation
Data Source
Figure 1~2
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Figure 5~6
AI summary
The invention provides a vibration reducing mounting comprising a wire which follows a path which comprises a mounting portion (MR) for fixing to a component to be mounted in a first plane and first and second limbs (L1, L2) extending outwardly from the mounting portion (MR). Each limb (L1, L2) has a sequence of bends (B) and the end sections (L1SLAST, L2SLAST) lie in a second plane parallel with the first plane and which functions as a support plane. The end sections (L1SLAST, L2SLAST) extend across opposite sides of the mounting portion (MR). At least one of the bends of the bend sequences (B) has an angle of 150 degrees or less.