Dual-Mode Vibration Module for Sound and Haptic Space Saving

Solution Overview

Problem

The arrangement of both a sound vibrating motor and an interaction vibrating motor in electronic devices increases the occupied inner space and overall cost.

Innovation Solution

A vibration module with a single driving motor that can operate in two modes: one for generating sound waves and another for interaction vibration, utilizing a packaging structure and piezoceramics to simplify the structure and reduce space and cost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If both a sound vibrating motor and an interaction vibrating motor are arranged in the electronic device, then the sounding function and interaction vibration function can be independently implemented, but the occupied inner space and overall cost increase

Engineering Contradiction:

ImprovefunctionalityVSAvoidoccupied inner space

Core Design Contradiction:

Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The driving motor is designed to operate in multiple vibration modes (first vibration mode for sounding, second vibration mode for interaction) to perform both sounding and interaction vibration functions. The packaging structure includes a sounding part that can be driven by the motor, and the motor can also directly drive function modules for interaction vibration, allowing one motor to replace what would traditionally require two separate motors.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If both a sound vibrating motor and an interaction vibrating motor are arranged in the electronic device, then the sounding function and interaction vibration function can be independently implemented, but the overall cost increases

Engineering Contradiction:

ImprovefunctionalityVSAvoidcost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The driving motor is designed to operate in multiple vibration modes (first vibration mode for sounding, second vibration mode for interaction) to perform both sounding and interaction vibration functions. The packaging structure includes a sounding part that can be driven by the motor, and the motor can also directly drive function modules for interaction vibration, allowing one motor to replace what would traditionally require two separate motors.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If a single driving motor is used for both sounding and interaction vibration, then the structure is simplified and space is reduced, but the motor must operate in different vibration modes

Engineering Contradiction:

ImprovestructureVSAvoidvibration mode control

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The driving motor's vibration parameters (such as vibration frequency and amplitude) are dynamically adjusted based on the required function. The control chip receives different control signals (sounding control signal or interaction control signal) and adjusts the motor's operating parameters accordingly, enabling the motor to adapt between first vibration mode for sounding and second vibration mode for interaction vibration.

Inventive Principle:

Principle #15Dynamics

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 solution simplifies the vibration module's structure, reduces the occupied inner space, and lowers the overall cost of the electronic device by enabling dual functions with a single motor.

Implementation Method 1

The vibration module may further include piezoceramics. The piezoceramics is configured to be electrically connected with the control chip and cooperate with the sounding part, so as to be controlled to drive the sounding part to generate the vibrating sound wave.

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

The driving motor is configured to, in a case that the driving motor is in the first vibration mode, cooperate with the sounding part and drive the sounding part to generate a vibrating sound wave

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 3

in a case that the driving motor is in the second vibration mode, cooperate with at least one function module of the device body and drive the at least one function module to vibrate

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Data Source

PatentEP3799403B1Vibration module, electronic device, and method of controlling electronic device

Publication Date: 2025.12.03 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

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AI summary

Provided are a vibration module, an electronic device, and a method of controlling an electronic device. The vibration module is assembled in a device body of the electronic device and includes: a driving motor and a packaging structure arranged outside the driving motor. The driving motor can cooperate with a sounding part of the packaging structure when in a first vibration mode, and drive the sounding part to generate a vibrating sound wave; and the driving motor can cooperate with at least one function module of the device body when in a second vibrating mode, and drive the function module to vibrate, thereby simplifying the structure of the vibration module, reducing the occupied inner space of the electronic device by the vibration module, and reducing the cost of the electronic device.