Vibration Motor Weight Segmentation for Elastic Part Durability
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Solution Overview
Problem
Conventional vibration motors in portable devices face reliability issues due to increased vibratory load and reduced durability of elastic parts, which are exacerbated by the need for heavier weights to enhance vibration feedback.
Innovation Solution
The vibration motor design incorporates a weight with a gap part and welding part, integrated with a U-shaped elastic part and a magnetic conductor pole plate to improve fixation and reduce magnetic leakage, enhancing the structural integrity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If weights are added to enhance vibration feedback, then vibration strength is improved, but reliability deteriorates due to increased vibratory load and reduced durability of elastic parts
Solution Approach 1:
The weight is divided into multiple segments separated by gap parts, transforming a single heavy mass into distributed smaller masses. This segmentation reduces the concentrated vibratory load on elastic parts while maintaining overall vibration feedback strength through cumulative effect of multiple weight segments.
Solution Approach 2:
Elastic parts are pre-installed between the vibration weight and housing to provide cushioning before vibratory loads occur. This beforehand cushioning absorbs and distributes the impact forces, protecting the weight structure and reducing stress on connection points, thereby improving durability under strong vibration conditions.
2Power
If weights are added to enhance vibration feedback, then vibration strength is improved, but structural integrity worsens due to increased stress on elastic parts
Solution Approach 1:
The weight structure is segmented with gap parts that create multiple independent sections. This segmentation distributes mechanical stress across multiple connection points between weights and elastic parts, preventing stress concentration that would compromise structural integrity under strong vibration loads.
Solution Approach 2:
Elastic parts are strategically positioned at specific locations between weight segments and housing to provide localized strength enhancement where stress concentration occurs. This local quality improvement reinforces critical stress points without adding overall weight, maintaining structural integrity while supporting strong vibration feedback.
3Force
If magnetic conductor pole plate is added to reduce magnetic leakage, then magnetic field efficiency is improved, but device complexity increases
Solution Approach 1:
The magnetic conductor pole plate is merged with the existing weight structure, combining magnetic field guidance function with the mechanical weight component. This integration achieves magnetic leakage reduction without adding separate independent parts, thereby improving magnetic field efficiency while minimizing increase in device complexity.
Solution Approach 2:
The weight structure serves multiple functions: providing vibratory mass, reducing magnetic leakage through integrated pole plate, and maintaining structural integrity. This multi-functionality eliminates the need for separate magnetic shielding components, improving magnetic field efficiency without proportionally increasing device complexity.
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 design increases the durability of the elastic parts and improves the reliability of the vibration motor by providing a stronger and more stable vibration mechanism, preventing collisions and maintaining effective vibration feedback.
Implementation Method 1
the coil will interact with the magnet, producing magnetic field force
Implementation Method 2
the whole vibration part will be affected by the magnetic force and do the reciprocating vibration supported by the elastic element
Data Source
AI summary
The present disclosure is related to a vibration motor. The vibration motor includes a housing, a vibrator, a stator and an elastic part. One of the vibrator and the stator includes a coil, and the other includes a magnet opposite to the coil. The elastic part includes a first fixation part, a second fixation part and a connecting part. A weight includes a first side and a second side and a gap part formed by denting towards the direction far from a first side wall from the first side. The weight further includes a welding part protruding from the center of the gap part and extends to the edge of the gap part. The durability of the elastic part is accordingly increased, and the reliability of the product is thus improved.