Vibration Motor Elastic Member Structure for Higher Durability
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Solution Overview
Problem
Existing vibration motors have reliability issues due to the limited durability of their elastic members, which can lead to reduced performance and increased risk of failure.
Innovation Solution
The vibration motor incorporates a pair of elastic members made of metal plates with specifically designed fixtures and bends to enhance durability. These elastic members are configured to support the vibrator within the housing, allowing for effective reciprocation while distributing stress and reducing the risk of breakage or deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional elastic members are used to support the vibrator, then the vibration motor can be manufactured with simpler structure, but the durability of the elastic members is limited leading to reduced reliability
Solution Approach 1:
The elastic member is divided into multiple functional segments: a first fixture portion fixed to the vibrator, a second fixture portion fixed to the housing, and an intermediate portion connecting them. This segmentation allows each part to perform its specific function optimally, improving overall durability and reliability while maintaining manufacturing simplicity.
Solution Approach 2:
The elastic member incorporates bends in multiple directions (first direction perpendicular to vibration direction, second direction parallel to vibration direction) to create a three-dimensional stress distribution pattern. This multi-dimensional bending structure enhances the elastic member's ability to withstand stress from various directions, significantly improving durability without complicating the basic support function.
2Strength
If the elastic members are designed with simple structure, then manufacturing is easier, but the elastic members have limited ability to withstand stress leading to breakage or deformation
Solution Approach 1:
The elastic member is designed with specific bend configurations that allow it to dynamically adapt to stress applied in different directions. The first bends accommodate stress perpendicular to the vibration direction, while the second bends handle stress parallel to the vibration direction, enabling the structure to flex and absorb energy without breaking, thus improving strength while maintaining ease of manufacture.
Solution Approach 2:
The elastic member's geometric parameters are optimized by introducing specific bend angles and configurations in different directions. These parameter changes transform the simple metal plate into a high-strength component that can withstand multi-directional stress, achieving enhanced strength without requiring complex manufacturing processes.
3Reliability
If conventional elastic members without multi-directional bends are used, then the structure is simpler, but the elastic members are prone to breakage or deformation under stress
Solution Approach 1:
The elastic member is segmented into distinct functional zones with specific bend configurations. The first fixture portion, second fixture portion, and intermediate portion with multi-directional bends work together as integrated segments, distributing stress across different regions and preventing concentration at single points, thereby improving durability without excessive complexity.
Solution Approach 2:
By adding bends in multiple dimensions (first direction perpendicular to vibration, second direction parallel to vibration), the elastic member gains the ability to handle stress from multiple directions simultaneously. This multi-dimensional approach transforms a simple one-dimensional support element into a robust three-dimensional stress-distributing structure, significantly enhancing durability.
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 enhanced durability of the elastic members results in a vibration motor with higher reliability, capable of withstanding greater stress and reducing the likelihood of failure, thereby improving overall performance.
Implementation Method 1
a pair of elastic members supporting the vibrator inside the housing to allow reciprocation of the vibrator in the first direction
Data Source
AI summary
A vibration motor includes a housing, a vibrator accommodated in the housing to reciprocate in a lateral direction inside the housing, and a pair of elastic members supporting the vibrator inside the housing to allow reciprocation of the vibrator in the lateral direction. Each of the pair of elastic members is a metal plate including a first fixture fixed to the vibrator and a second fixture fixed to the housing. The first fixture and the second fixture are bent in a same direction and face each other in a font-rear direction. The first fixture and the second fixture include a pair of bends extending inward. The pair of bends face each other in a vertical direction.