Multifunctional Sounding Device Magnetic Circuit Gap Control
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Solution Overview
Problem
Existing multifunctional sounding devices lack a fixed method to provide driving force for the driving coil and control the magnetic circuit system's magnetic gap.
Innovation Solution
The device includes a main magnetic circuit fixed to the lower housing, a first auxiliary magnetic circuit with a magnet and pole plate fixed to the lower housing, and a second auxiliary magnetic circuit with driving coils connected to the second auxiliary magnets, allowing for controlled magnetic field interaction and stable vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the magnetic circuit system is fixed in the housing body to maintain magnetic gap space, then the magnetic gap control is improved, but the device complexity increases due to additional fixed structures
Solution Approach 1:
The patent combines the magnetic circuit system with the housing body by directly fixing the magnetic circuit to the housing, eliminating the need for separate fixed structures. This integration maintains the magnetic gap space while reducing overall device complexity through structural merging.
Solution Approach 2:
The housing body serves multiple functions: it provides structural support, contains the magnetic circuit system, and maintains the magnetic gap space. This multi-functionality reduces the need for additional dedicated components, thereby simplifying the device while improving magnetic gap control.
2Reliability
If a fixed method is implemented to provide driving force for the driving coil, then the vibration performance is improved, but the device complexity increases due to additional motor assembly components
Solution Approach 1:
The motor assembly is integrated with the sounding unit, where the driving coil is positioned within the magnetic circuit system. This merging of functions allows the vibration mechanism to be provided through the existing structural components, improving vibration performance without proportionally increasing device complexity.
Solution Approach 2:
The elastic member automatically suspends and positions the vibration unit within the containment space, providing self-adjusting vibration support without requiring complex external control mechanisms. This self-service approach improves vibration reliability while minimizing additional components.
3Adaptability or versatility
If the vibration unit is elastically suspended in the containment space, then the vibration freedom is improved, but the stability of the magnetic gap control deteriorates
Solution Approach 1:
The elastic member acts as an intermediary between the vibration unit and the housing, allowing controlled movement while maintaining stable positioning. This mediator enables vibration freedom through elastic deformation while preserving magnetic gap control stability through controlled mechanical coupling.
Solution Approach 2:
The elastic properties of the suspension member are optimized to provide appropriate stiffness characteristics, allowing the vibration unit to move freely within certain parameters while maintaining stable magnetic gap dimensions. By adjusting the elastic parameters, both vibration freedom and gap stability are achieved.
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 configuration enables effective control of the magnetic gap, improves production accuracy, and enhances product consistency by stabilizing the magnetic field and vibration performance.
Implementation Method 1
a magnetic circuit system having a magnetic gap for driving the vibration system to vibrate
Implementation Method 2
an elastic member elastically suspending the vibration unit in the containment space
Data Source
AI summary
The present disclosure provides a multifunctional sounding device, which includes a lower housing, an upper housing and a sounding unit. The sounding unit includes a frame, a vibration system and a magnetic circuit system. The magnetic circuit system includes a main magnetic circuit, a first auxiliary magnetic circuit and a second auxiliary magnetic circuit. The first auxiliary magnetic circuit includes a first auxiliary magnet and a first auxiliary pole plate. The multifunctional sounding device also includes a motor assembly having a vibration unit and an elastic member. The main magnetic circuit, the first auxiliary magnetic circuit and the second auxiliary magnetic circuit are respectively fixed in the lower housing or the upper housing. This is not only beneficial to control the magnetic gap, but also improves production accuracy and product consistency.