Micro Speaker Dodging Groove Collision Avoidance
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Solution Overview
Problem
Conventional micro speakers with flat plate-shaped upper housings face challenges in accommodating vibration and magnetic circuit systems, leading to reduced size and compromised acoustic performance when trying to match with terminal electronic devices having recessed structures.
Innovation Solution
The micro speaker design incorporates a vibrating diaphragm with a rigid dome portion and a suspension ring, a dual magnetic circuit system, and a support system with recessed grooves and dodging structures to prevent collisions and maintain acoustic performance, including a hollow annular washer and magnet design to ensure proper alignment and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the upper housing is provided with a groove structure recessed towards the vibrating diaphragm to match terminal electronic devices, then the adaptability of the micro speaker is improved, but the vibrating diaphragm must be spaced apart from the upper housing by a certain distance to prevent collision during vibration, which reduces the size of the vibration system and magnetic circuit system and deteriorates the acoustic performance
Solution Approach 1:
Instead of making the vibrating diaphragm smaller to fit in the reduced space, the patent inverts the approach by adding a dodging groove to the upper housing that matches the groove structure, allowing the vibrating diaphragm to maintain its original size and shape while avoiding collision through the grooved interface
Solution Approach 2:
The patent applies local quality by providing a groove structure at the specific location where the upper housing contacts the vibrating diaphragm, while the rest of the vibrating diaphragm maintains its original planar structure and full vibration capability, thus locally adapting to the terminal device interface without compromising overall acoustic performance
2Reliability
If the vibrating diaphragm is spaced apart from the upper housing by a certain distance to prevent collision, then the reliability of preventing collision is improved, but the size of the vibration system and magnetic circuit system is reduced, which deteriorates the acoustic performance
Solution Approach 1:
The patent solves the collision prevention problem by introducing a groove dimension that allows the vibrating diaphragm to move vertically within the groove during vibration, effectively utilizing the vertical dimension for collision avoidance while maintaining the horizontal spacing and overall size of the vibration system
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 prevents collisions between components, ensures normal operation, and maintains acoustic performance by adapting the vibration and magnetic circuit systems to recessed upper housing structures without reducing their size, thereby enhancing the micro speaker's compatibility with terminal electronic devices.
Implementation Method 1
the magnetic circuit system forms a magnetic gap for accommodating the voice coil
Data Source
AI summary
Disclosed is a micro speaker, comprising a vibration system, a magnetic circuit system and a support system; the vibration system comprises a vibrating diaphragm; a dodging groove is provided on a dome portion of the vibrating diaphragm opposite to a groove structure of an upper housing; the depth of the dodging groove is not less than that of the groove structure; an orthographic projection area of the dodging groove covers that of the groove structure; a dodging structure is provided on a washer of the magnetic circuit system opposite to the dodging groove; the depth of the dodging structure is not less than that of the dodging groove; and the orthographic projection area of the dodging structure covers that of the dodging groove. This structure ensures the normal operation of a product and acoustic performance of a micro speaker while preventing collision of components.