Linear Vibration Motor Integrated Stoppers
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Solution Overview
Problem
The existing linear vibration motors for mobile electronic products require additional limiting blocks to prevent the vibrating unit from colliding with the base, leading to low production efficiency and high costs due to the complex welding process.
Innovation Solution
A linear vibration motor design featuring a base with a top cover and side plates, utilizing two elastic members stacked in opposite directions with first and second stoppers to suspend the vibrating unit, reducing the need for additional limiting blocks and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If two elastic members are stacked in opposite directions to increase elasticity, then the elastic support capability is improved, but the device complexity increases due to additional components and welding processes
Solution Approach 1:
The patent combines the limiting function with the elastic member structure by integrating stoppers directly onto the elastic members. This merging eliminates the need for separate limiting blocks and their associated welding processes, thereby maintaining the elastic support capability while reducing structural complexity and assembly steps.
Solution Approach 2:
The elastic members are designed to perform multiple functions: providing elastic support for the vibrating unit and simultaneously limiting its movement through integrated stoppers. This multi-functionality reduces the total number of components needed, as the same structure serves both support and limiting purposes, thereby reducing device complexity while maintaining strength.
2Reliability
If additional limiting blocks are added to prevent collision, then the reliability is improved, but the productivity decreases due to complex welding processes
Solution Approach 1:
The limiting function is merged into the elastic member structure through integrated stoppers, eliminating the need for separate limiting blocks. This integration removes the complex welding processes required for attaching separate limiting components, thereby improving production efficiency while maintaining reliable collision prevention.
Solution Approach 2:
The stoppers are pre-integrated into the elastic member structure during manufacturing, so that the limiting function is already built-in before assembly. This preliminary action eliminates the need for additional welding steps during production, thereby improving productivity while ensuring reliable collision prevention from the start.
3Reliability
If separate limiting blocks are used to prevent vibrating unit collision, then the reliability is improved, but the ease of manufacture deteriorates due to additional welding operations
Solution Approach 1:
The limiting function is combined with the elastic member structure through integrated stoppers, eliminating the need for separate limiting blocks and their associated welding operations. This merging simplifies the manufacturing process while maintaining reliable collision prevention, as fewer separate components need to be assembled and welded.
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 enhances the reliability and stability of the motor by preventing direct collisions, reduces production costs, and improves assembly efficiency by eliminating the need for additional limiting components.
Implementation Method 1
The magnetic field generated by the coil interacts with the magnetic field generated by the vibrating unit, so as to drive the vibrating unit to move reciprocally and linearly to generate vibration
Implementation Method 2
an elastic member which fixes and suspends the vibrating unit in the accommodating space
Data Source
AI summary
A linear vibration motor, including: a base, a vibrating unit, an elastic member, a first stopper and a second stopper. The elastic member includes two elastic members mutually spaced and arranged by stacking. Each elastic member includes a fixing arm fixed on the vibrating unit, two elastic arms bending and extending from the fixing arm, and two connecting arms respectively bending and extending from ends of the elastic arms, the connecting arms are respectively fixed on the base; the first stopper is fixed at a side of the fixing arm away from the vibrating unit; the second stopper is fixed on a side of the connecting arm close to the vibrating unit; the first stopper and the second stopper are mutually spaced and an orthographic projection of the first stopper along the vibrating direction at least partially falls into the second stopper.