Vibrating Motor Linking Module Constrains Off-Axis Motion

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Solution Overview

Problem

Typical vibrating motors suffer from low vibration performance and reliability due to elastic members deforming in unintended directions, causing the vibrating unit to shake off-axis.

Innovation Solution

A vibrating motor design featuring a fixed unit, a vibrating unit, a linking module, and elastic members that restrict the vibrating unit to vibrate linearly by using a rotably engaged linking module with bearing members to reduce friction and maintain alignment within a specific plane.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If elastic members are used to suspend the vibrating unit, then the vibrating unit can be driven to vibrate, but the elastic members may deform in any direction causing the vibrating unit to suffer shaking deviating from the vibration direction

Engineering Contradiction:
Improvevibration performanceVSAvoidalignment stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

A linking module is introduced as an intermediary component between the elastic members and the vibrating unit. The linking module includes a linking body rotatably connected to the vibrating unit, which guides and constrains the force transmission from the elastic members to ensure the vibrating unit moves only in the intended vibration direction, preventing off-axis shaking while maintaining the elastic suspension function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Force

If elastic members deform freely to provide elastic driving force, then the vibrating unit can be driven to vibrate, but this causes the vibrating unit to suffer shaking deviating from the vibration direction

Engineering Contradiction:
Improveelastic driving forceVSAvoidvibration direction precision
Core Design Contradiction:
ForceVSManufacturing precision

Solution Approach 1:

The linking module serves as a mediator that transmits the elastic driving force from the elastic members to the vibrating unit while constraining the direction of force application. The rotatable linking body ensures that the elastic force is converted into linear vibration motion, eliminating directional deviations and improving vibration direction precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The linking module changes the parameter of force application direction by providing a rotational joint that guides the elastic force into a specific linear direction. This parameter transformation ensures that the elastic driving force is always applied in the correct vibration direction, regardless of the elastic member's deformation state.

Inventive Principle:
Principle #35Parameter changes

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 design enhances vibration performance and reliability by ensuring the vibrating unit vibrates parallel to the intended direction, minimizing off-axis motion and improving overall motor performance.

Implementation Method 1

The elastic members perform an elastic deformation for providing an elastic driving force to drive the vibrating unit to vibrate along a vibration direction

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a rotably engaged linking module with bearing members to reduce friction and maintain alignment within a specific plane

Methodology Applied
Scientific EffectFriction reduction: Lubrication

Data Source

PatentUS9882459B2Vibrating motor
Publication Date: 2018.01.30 AAC TECHNOLOGIES PTE LTD
  • US9882459B2 patent drawing
  • US9882459B2 patent drawing
  • US9882459B2 patent drawing

AI summary

A vibrating motor is provided in the present disclosure. The vibrating motor includes a shell providing a receiving cavity, a vibrating unit received in the receiving cavity, a pair of elastic members for elastically suspending two opposite ends of the vibrating unit to the shell, and a linking module. The linking module includes a pair of linking units rotably engaged with the two opposite ends of the vibrating unit respectively. Each of the linking units includes a linking rod and a guiding pin fixed to the shell. An end of the linking rod is engaged with the guiding pin, and the other end of the linking pod is engaged with a corresponding end of the vibrating unit.