Speaker Upper Plate Bending Portion Short Circuit Prevention
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Solution Overview
Problem
The existing speaker designs face issues with miniaturization and high sound quality, particularly in mobile phones, where excessive pressure on the upper plate can cause a short-circuit problem due to the flattening of the fixing portion and contact with conductive members.
Innovation Solution
The speaker design incorporates an upper plate with a bending portion that extends toward the yoke, preventing contact with the conductive member under pressure, and features a protrusion for improved strength and reduced space occupation, thereby avoiding short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the upper plate is subjected to excessive pressure, then the fixing portion is flattened to provide structural support, but the flattened fixing portion contacts the conductive member causing a short-circuit problem
Solution Approach 1:
The patent introduces a new spatial dimension by adding a bending portion that extends in a direction away from the conductive member. This dimensional extension creates physical separation between the upper plate and the conductive member, preventing contact while maintaining structural integrity through the bending portion's geometric configuration
Solution Approach 2:
The bending portion acts as an intermediary element between the upper plate and the conductive member. It provides a buffer zone that prevents direct contact while allowing the upper plate to maintain its structural support function, thus mediating between the conflicting requirements of strength and short-circuit prevention
2Volume of moving object
If the speaker is miniaturized to fit mobile phones, then the size is reduced for portability, but the space for components becomes limited increasing device complexity
Solution Approach 1:
The patent applies nesting by positioning the bending portion within the existing speaker structure, extending toward the yoke but remaining integrated with the upper plate. This nested configuration allows additional structural features to be accommodated within the miniaturized speaker volume without increasing overall device complexity
Solution Approach 2:
By utilizing the spatial dimension toward the yoke for the bending portion, the patent efficiently packs additional structural elements into the limited volume of the miniaturized speaker, optimizing component arrangement within the constrained space
3Stability of the object's composition
If the fixing portion is made rigid to provide stable support, then the stability is improved, but the fixing portion cannot flex under pressure causing contact with conductive members
Solution Approach 1:
The patent segments the upper plate into distinct functional portions: a rigid base portion for stable support and a bending portion for flexible protection. This segmentation allows different parts to fulfill different requirements - the base provides stability while the bending portion provides flexible separation from conductive members
Solution Approach 2:
The patent applies local quality by making only the bending portion flexible while keeping the base portion rigid. This localized flexibility in the bending portion provides the necessary movement capability to prevent contact with conductive members, while the rest of the upper plate maintains its rigid structural support function
Data Source
AI summary
The present application discloses a speaker includes a frame, a vibration system accommodated in the frame, the vibration system comprising a diaphragm, a voice coil for driving the diaphragm to generate sounds. Wherein, the voice coil comprises a pair of voice coil leading wires; a magnetic circuit system accommodated in the frame, the magnetic circuit system comprising a yoke, a main magnet, an auxiliary magnet surrounding the main magnet and spaced from the main magnet for forming a magnetic gap, an upper plate attached to the auxiliary magnet; the upper plate includes a base portion, an extending portion extending from an edge of the base portion in a direction away from the base portion, and a bending portion connected with the extending portion and bent and extends toward the yoke; the frame wraps on the extending portion and the bending portion by means of injection molding.