Vibrating Motor Flexible Circuit Board Lead Wire Protection
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Solution Overview
Problem
Typical vibrating motors in mobile devices suffer from low reliability due to lead wire fracture when operating in a resonance state with great vibration amplitude, leading to motor failure.
Innovation Solution
A vibrating motor design featuring a flexible circuit board that securely connects and protects the lead wires of the coil assembly, preventing over-stretching and fracture by using a frame structure with connecting strips and curved portions to bypass protrusions on the mass member, ensuring the lead wires are not overstretched during vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the vibrator operates in a resonance state with great vibration amplitude, then the vibration feedback performance is improved, but the lead wire of the coil may be over-stretched and suffer fracture
Solution Approach 1:
The patent introduces a buffer structure as an intermediary between the coil lead wire and the vibrating system. This buffer absorbs and mitigates the mechanical stress transmitted to the lead wire during high-amplitude vibration, preventing direct over-stretching while maintaining the vibration feedback performance.
Solution Approach 2:
The patent implements a protective buffer structure that is pre-configured to cushion and absorb mechanical stress before it can reach the lead wire. This beforehand cushioning prevents the lead wire from experiencing over-stretching conditions that would lead to fracture, allowing the vibrator to operate at high amplitudes safely.
2Device complexity
If the lead wire is directly connected to the coil without protection, then the device complexity is reduced, but the lead wire is susceptible to over-stretching and fracture during vibration
Solution Approach 1:
The patent introduces a buffer structure as an intermediary between the coil lead wire and the vibrating system. This buffer absorbs and mitigates the mechanical stress transmitted to the lead wire during high-amplitude vibration, preventing direct over-stretching while maintaining the vibration feedback performance.
Solution Approach 2:
The patent employs a flexible buffer structure that can deform and absorb mechanical stress. This flexible component protects the rigid lead wire from stress concentration and fracture, providing a simple yet effective protection mechanism that maintains reliability without significantly increasing complexity.
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 the reliability of the vibrating motor by preventing lead wire fracture and maintaining motor functionality, thereby improving the overall performance and longevity of the device.
Implementation Method 1
a coil assembly (121)
Implementation Method 2
a pair of elastic connectors (13) for elastically suspending the vibrating system (12)
Data Source
AI summary
A vibrating motor is provided in the present disclosure. The vibrating motor includes a shell providing an accommodating space, a vibrating system accommodated in the accommodating space, and a flexible circuit board. The vibrating system includes a coil assembly, and the flexible circuit board includes a fixing part fixed to the shell, a connecting part connected to the coil assembly, and a flexible connecting arm connected between the fixing part and the connecting part.