Vibration Motor Elastic Assembly Height Reduction
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Solution Overview
Problem
Conventional vibration motors in portable electronic devices face challenges in reducing height while minimizing noise, as the elastic supporting members are stacked vertically, increasing the motor's thickness and not meeting the requirement for thinner devices.
Innovation Solution
The vibration motor design incorporates an elastic assembly with a bended elastic frame and interlaced first and second elastic supporting members, which are connected to the housing, reducing the motor's height by optimizing the arrangement of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the elastic supporting members are stacked vertically to avoid noise, then the noise is reduced, but the height of the vibration motor increases
Solution Approach 1:
The patent transitions from a vertical stacking arrangement (one-dimensional height occupation) to a lateral distribution arrangement (two-dimensional plane occupation). The first and second elastic supporting members are positioned side-by-side in the horizontal direction rather than stacked vertically, thereby reducing the height requirement while maintaining noise isolation effectiveness through spatial separation.
Solution Approach 2:
The patent integrates the elastic supporting members within the housing structure by having them connect to the bottom plate and side wall, effectively nesting the support mechanism within the existing housing volume. This eliminates the need for additional vertical space while maintaining the noise-reducing separation between the vibration unit and housing.
2Length of moving object
If the vibration motor is made thinner to meet device requirements, then the device thickness is reduced, but the noise isolation capability is compromised
Solution Approach 1:
The patent redistributes the noise isolation function from the vertical dimension to the horizontal dimension. By positioning the elastic supporting members laterally and utilizing the housing's side wall as a mounting surface, the design achieves effective noise separation without requiring additional vertical clearance, thus maintaining thin profile while preserving noise isolation.
Solution Approach 2:
The housing structure serves multiple functions: it provides mechanical support, contains the vibration unit, and acts as one of the mounting surfaces for the elastic supporting members (specifically the side wall). This multi-functionality eliminates the need for dedicated noise isolation structures that would increase thickness.
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 effectively reduces the vibration motor's height while maintaining effective tactile feedback, addressing the need for thinner devices without compromising noise reduction.
Implementation Method 1
an elastic assembly (4) for elastically supporting the vibration unit (2)
Data Source
AI summary
The vibration motor provided by the present disclosure includes an elastic assembly having an elastic frame, a first elastic supporting member, and a second elastic supporting member. The first and second elastic supporting members connects to the housing by the elastic frame. By virtue of the bended structure of the elastic frame, the first and the second elastic supporting members are arranged interlaced along the vibration direction, which greatly reduces the height of the vibration motor.