Linear Vibration Motor Elastic Support for Balanced Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing linear vibration motors face challenges with polarized vibration, complex structure, high assembly difficulty, reduced mass block volume, and poor low-frequency performance due to inadequate elastic support connections, leading to instability and reduced overall performance.
Innovation Solution
The motor employs at least two sets of elastic support assemblies with multiple connection points, where each set comprises two elastic supports with first and second connection points on the same side of the vibrator's central axis, and the second connection point is coupled to a side wall perpendicular to the vibration direction, providing uniform support and eliminating the need for a positioning shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If existing elastic supports with two connection points are used, then the structure is simple, but the vibration balance of the vibrator cannot be ensured and polarized vibration occurs
Solution Approach 1:
The elastic support is divided into multiple connection points (at least three: first connection point to vibrator, second connection point to housing, third connection point to housing), segmenting the support function across multiple attachment locations to achieve better vibration balance without adding complex components
Solution Approach 2:
The connection points are arranged in specific spatial dimensions relative to the vibrator's central axis (both on the same side of the central axis), utilizing dimensional positioning to achieve vibration balance without adding a positioning shaft
2Stability of the object's composition
If a positioning shaft is added to solve polarized vibration, then the vibration balance is improved, but the structure becomes more complex and assembly difficulty increases
Solution Approach 1:
The vibration balancing function is merged into the elastic support structure itself by arranging multiple connection points in specific spatial relationships, eliminating the need for a separate positioning shaft component
Solution Approach 2:
The elastic support performs multiple functions: providing elastic restoring force, supporting the vibrator, and ensuring vibration balance through its multi-point connection configuration, replacing the need for separate positioning components
3Stability of the object's composition
If a positioning shaft is added to solve polarized vibration, then the vibration balance is improved, but the mass block volume and weight are reduced
Solution Approach 1:
The positioning function is segmented into multiple connection points distributed on the elastic support rather than requiring a centralized positioning shaft that would occupy mass block volume
4Stability of the object's composition
If a positioning shaft is added to solve polarized vibration, then the vibration balance is improved, but the resonant frequency increases and low frequency performance deteriorates
Solution Approach 1:
The positioning and support functions are merged into the elastic support structure with multiple connection points, avoiding the addition of rigid positioning components that would increase resonant frequency and maintain good low-frequency 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
This configuration enhances vibration stability and balance, simplifies the motor structure, reduces assembly complexity, lowers resonant frequency, and improves low-frequency performance while maintaining a larger mass block volume, resulting in higher overall motor performance and extended service life.
Implementation Method 1
two elastic supports which are respectively arranged at two ends of the vibrator and are used for supporting the vibrator and providing elastic restoring forces
Data Source
AI summary
A linear vibration motor comprising a housing, a stator, an vibrator, and two sets of elastic support assemblies which are located at two ends of the vibrator, respectively, and used for supporting the vibrator and providing elastic restoring forces, wherein each set of the elastic support assemblies comprises at least two elastic supports. Each elastic support comprises a first connection point coupled to the vibrator and a second connecting point coupled to the housing. both the first connection point and the second connection point which are located on the same elastic support are located on the same side of a central axis of the vibrator, and the central axis is parallel to a vibration direction of the vibrator; and the second connection point is coupled onto a side wall, perpendicular to the vibration direction of the vibrator, of the housing. The linear vibration motor of the present invention has a simple structure, is low in assembly difficulty and high in production efficiency.