Speaker Holder Chamfered Edges Molding Deformation
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Solution Overview
Problem
The holder in speaker devices is prone to deformation during molding, leading to unevenness and issues with material extrusion and diaphragm breakage, which affects the yield and performance of the speaker device.
Innovation Solution
The holder design includes chamfered edges and notches, allowing for improved molding evenness and accommodating overflowing plastic, with a ring-shaped bottom wall and connecting portions that define an accommodating space for the voice coil, enhancing the structural integrity and adhesive force between the diaphragm and holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the holder is molded in a mold, then the holder can be manufactured efficiently, but the holder is prone to deformation and unevenness
Solution Approach 1:
The patent introduces chamfered portions at specific locations (where side walls bend and connect to the bottom wall) of the holder. These localized structural modifications create stress relief zones that prevent deformation during molding, thereby improving manufacturing precision without affecting overall manufacturing efficiency.
2Strength
If the side walls of the holder are bent and extended to the magnetic circuit unit, then the structural integrity is improved, but material extrusion and diaphragm breakage occur during molding
Solution Approach 1:
The chamfered portions are designed in advance at the bending locations of the side walls to prevent the harmful effects of material accumulation and stress concentration during the molding process. By providing these stress relief structures beforehand, the patent prevents material extrusion and diaphragm breakage while maintaining the structural integrity provided by the bent side walls.
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 chamfered edges and notches in the holder design prevent deformation, improve molding evenness, and reduce material extrusion and diaphragm breakage, resulting in enhanced speaker device reliability and yield.
Implementation Method 1
a holder fixed to the diaphragm by injection molding
Data Source
AI summary
The present disclosure provides speaker device. speaker device includes frame, vibration unit fixed to frame and magnetic circuit unit driving vibration unit to vibrate and produce sound, where magnetic circuit unit is provided with magnetic gap; vibration unit includes diaphragm fixed to frame, holder fixed to diaphragm by injection molding and voice coil inserted in magnetic gap and connected to holder; holder includes bottom wall that is fixed to diaphragm and provided with pair of long edges and pair of short edges, and pair of side walls bending and extending from outer peripheries of short edges of bottom wall to magnetic circuit unit; side walls each are provided with chamfered portions on sides close to long edges. Present disclosure solves problem of deformation of holder molded in mold, thereby improving evenness of holder after molding.