Linear Vibrator Using Rubber Elastic Body for Mass Production
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Solution Overview
Problem
Conventional linear vibrators for mobile phones and game consoles face challenges in mass production due to high sensitivity of characteristic frequencies, leading to production cost and labor inefficiencies, as they typically use steel plates or wires for elastic bodies, which are prone to shape differences and assembly errors.
Innovation Solution
A linear vibrator design utilizing rubber or silicone rubber with lower elasticity as the elastic body, secured to a casing or base, to reduce frequency sensitivity and simplify assembly, thereby minimizing production deviations and costs while maintaining vibration intensity through a nonmagnetic uneven base and adjustable magnetic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel plate or wire is used for the elastic body, then the structure provides high vibrating intensity, but the characteristic frequency is highly sensitive to shape differences and assembly errors, making mass production difficult and costly
Solution Approach 1:
The patent changes the material parameter from high-elasticity steel to low-elasticity rubber, which fundamentally alters the elastic body's frequency characteristics. This parameter change reduces the sensitivity of characteristic frequency to dimensional variations, enabling consistent frequency performance across mass-produced units without requiring extreme manufacturing precision
Solution Approach 2:
The patent employs rubber material that combines elastic properties with damping characteristics, creating a composite effect that maintains the necessary elastic support function while reducing frequency sensitivity. This material choice effectively combines multiple properties to solve both the structural support requirement and the frequency stability requirement
2Productivity
If steel plate or wire is used for the elastic body, then the structure provides high vibrating intensity, but the production cost and labor cost increase due to complex assembly processes
Solution Approach 1:
The patent adopts rubber elastic bodies that can be produced more economically than precision metal components. While rubber may have different durability characteristics, it significantly reduces manufacturing facility requirements and assembly complexity, thereby improving productivity and reducing overall production costs for the vibration generator
Solution Approach 2:
The patent replaces the mechanical assembly of metal springs or steel plates with a rubber-based elastic body that can be integrated more simply into the housing. This substitution eliminates complex mechanical fastening and adjustment mechanisms, simplifying the assembly process and reducing labor costs
3Reliability
If rubber or silicone rubber is used for the elastic body, then the frequency sensitivity is reduced and assembly is simplified, but the vibrating intensity must be maintained through alternative design approaches
Solution Approach 1:
The patent applies local quality enhancement by adding a magnetic weight to the oscillator component. This localized addition of mass concentrates the vibratory energy where needed, compensating for the lower elasticity of rubber material and maintaining sufficient vibrating intensity at the critical output location without requiring the entire elastic body to be highly elastic
Solution Approach 2:
The patent optimizes the dynamic characteristics by adjusting the mass distribution and geometric dimensions of the oscillator and elastic body. By carefully tuning these dynamic parameters, the system achieves adequate vibration intensity despite using lower-elasticity rubber material, balancing frequency stability with power output requirements
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 use of rubber or silicone rubber for the elastic body reduces frequency sensitivity and assembly errors, lowering production costs and improving productivity while maintaining vibration intensity and preventing magnetic interference, enabling efficient mass production of linear vibrators.
Implementation Method 1
an oscillator horizontally moving by an electromagnetic force
Implementation Method 2
an elastic body secured to the casing or a base for supporting the oscillator
Data Source
AI summary
A linear vibrator that transmits tactile signals to a user of a mobile phone, PDA, or a portable game console. The linear vibrator uses rubber or silicone rubber having lower elasticity as a material of an elastic body secured to a casing or a base for supporting an oscillator horizontally moving by an electromagnetic force relative to a facing stator, thereby lowering the frequency sensitivity due to a characteristic frequency; reducing various errors of parts and errors in part assembly, thus resulting in smaller deviations of characteristic frequencies between products from mass production; and significantly reducing production cost by using an elastic body made of rubber or silicon rubber instead of steel plate or wire, thereby efficiently producing a structure through a simple assembly process and reducing the manufacture facility cost and labor cost resulting in improved productivity.