Linear Vibration Motor Nested Damping Structure
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Solution Overview
Problem
The existing linear vibration motors face challenges in manufacturing complexity and high costs due to the process of fixing foamed cotton on the mass block, resulting in low product yield.
Innovation Solution
Incorporating a blocking piece to fix the foamed cotton within the housing portion of the vibration unit, allowing for a simplified shape of the mass block and a transition from injection molding to dry pressing, which reduces manufacturing costs and improves yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If foamed cotton is fixed on the mass block using traditional methods, then the vibration response is improved, but the manufacturing process complexity increases and production cost rises
Solution Approach 1:
The housing portion is formed as a recess on the mass block itself, creating a nested structure where the blocking piece and foamed cotton are housed within the mass block's own structure. This eliminates the need for separate external components and simplifies the manufacturing process while maintaining vibration control functionality.
Solution Approach 2:
The blocking piece serves as an intermediary component that simplifies the fixation process. Instead of directly complexly fixing foamed cotton to the mass block, the blocking piece acts as a mediator structure that holds the foamed cotton in place through simple snap-fitting or insertion, reducing overall manufacturing complexity.
2Reliability
If foamed cotton is fixed on the mass block in traditional manner, then vibration feedback is achieved, but manufacturing cost increases and product yield decreases
Solution Approach 1:
By nesting the blocking piece and foamed cotton within the housing portion recess formed on the mass block, the patent creates an integrated structure that reduces assembly steps and potential failure points. This integrated approach improves product yield by eliminating separate fixation operations that could fail during manufacturing.
Solution Approach 2:
The housing portion is segmented as a recess feature directly on the mass block structure, separating the vibration control function from the main mass block body while maintaining structural integrity. This segmentation allows for simplified manufacturing and higher yield by enabling modular assembly of the blocking piece and foamed cotton.
3Manufacturing precision
If complex fixation methods are used for foamed cotton, then positioning accuracy is improved, but manufacturing simplicity is reduced
Solution Approach 1:
The nested structure of the housing portion recess within the mass block provides inherent positioning for the blocking piece and foamed cotton. The recess geometry itself ensures correct positioning without requiring complex external fixtures or multi-step alignment procedures, maintaining manufacturing precision while simplifying the overall manufacturing process.
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 solution simplifies the manufacturing process, reduces costs, and enhances the vibration motor's yield by allowing uniform application of foamed cotton without affecting vibration performance.
Implementation Method 1
A linear vibration motor is a device that converts electrical energy into mechanical energy by using the principle of electromagnetic force generation
Data Source
AI summary
The present disclosure provides a linear vibration motor. The linear vibration motor comprises a shell having a housing space, a vibration unit housed in the housing space, an elastic member suspending the vibration unit in the housing space, and a driving unit driving the vibration unit to vibrate. The vibration unit comprises a housing portion recessed inwardly on two sides perpendicular to the vibration direction. The housing portion includes respective inner walls constituting the housing portion. The linear vibration motor further includes a blocking piece housing in the housing portion and fixedly connected to the inner wall, and a foamed cotton fixedly connected to the blocking piece and at least partially received in the housing portion, the blocking piece carrying and supporting the foamed cotton, and the blocking piece cooperating with the foamed cotton to limit the displacement of the vibration unit in the vibration direction.