Leaf Spring Vibration Motor Using Damping Glue for Stable Balance
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Solution Overview
Problem
Existing vibration motors face high material costs and reliability issues due to the use of magnetic liquid, which is affected by magnetic fields and lacks effective control over its position, leading to poor product consistency.
Innovation Solution
A vibration motor design incorporating damping glue between elastic arms of leaf springs to adjust vibration damping, using stainless steel leaf springs with specific angular distribution and a metal member structure to enhance reliability and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic liquid is used to adjust vibration damping of the vibrator assembly, then vibration damping can be adjusted, but material costs increase and reliability decreases due to magnetic field interference and poor position control
Solution Approach 1:
The patent replaces expensive magnetic liquid with damping glue, which is a cheaper material that achieves the same vibration damping function without the drawbacks of magnetic field interference and position control issues
Solution Approach 2:
The patent changes the material parameter from magnetic liquid to damping glue, fundamentally altering the damping mechanism from magnetic field-based to viscosity-based damping, which eliminates magnetic field interference and improves reliability
2Reliability
If magnetic liquid is used to adjust vibration damping, then vibration damping can be adjusted, but position control of the magnetic liquid becomes difficult due to magnetic field effects
Solution Approach 1:
The damping glue is a simple viscous material that can be easily positioned and fixed between the elastic arms and metal plates, eliminating the complex position control issues associated with magnetic liquid
Solution Approach 2:
By changing from magnetic liquid to damping glue, the patent transforms the damping medium from one requiring magnetic field control to one that relies on simple viscous properties, greatly simplifying position control
3Stability of the object's composition
If three elastic arms are distributed at 120° around the inner fixed portion, then vibration balance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies damping glue specifically at the gaps between adjacent elastic arms, providing localized vibration damping that compensates for minor angular distribution variations and maintains overall vibration balance
Solution Approach 2:
The combination of elastic arms and damping glue creates a composite structure where the damping glue provides vibration damping that tolerates minor manufacturing variations in the angular distribution of the elastic arms
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
Reduces material costs and improves product reliability and consistency by utilizing damping glue between elastic arms, maintaining vibration balance and reducing dependency on magnetic liquid.
Implementation Method 1
damping glue arranged between two adjacent elastic arms of the at least two elastic arms for adjusting vibration damping of the vibrator assembly
Implementation Method 2
at least two elastic arms connecting the outer fixed portion and the inner fixed portion, the at least two elastic arms extend from the inner fixed portion to the outer fixed portion in a manner of rotating around the inner fixed portion
Data Source
AI summary
A vibration motor, including a housing with a receiving space, a stator assembly fixed in the housing, a vibrator assembly received in the housing and driven by the stator assembly to vibrate, and a leaf spring connecting the housing and the vibrator assembly. The leaf spring includes an outer fixed portion fixed to the housing, an inner fixed portion fixed to the vibrator assembly, and an elastic arm connecting the outer fixed portion and the inner fixed portion. The elastic arm extends from the inner fixed portion to the outer fixed portion in a manner of rotating around the inner fixed portion. The vibration motor further includes damping glue arranged between two adjacent elastic arms for adjusting vibration damping of the vibrator assembly. The vibration motor of the present disclosure reduces material costs and improves reliability and consistency of a product.