Speaker Sealing via Fixing Ring and Suspension Bonding
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Solution Overview
Problem
Conventional speakers suffer from poor sealing and waterproof performance due to the easy separation of the second suspension from the connecting member during vibration, leading to air leakage.
Innovation Solution
The speaker design incorporates a fixing ring that is sleeved outside and connected to the subsidiary magnet, with the second suspension's inner peripheral side fixed to the outer side of the fixing ring, located between the two opposite ends of the fixing ring along the vibrating direction, increasing the bonding surface area without reducing the width of the second suspension or magnet area, thereby enhancing sealing and waterproof performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connecting member is used to connect the second suspension to the subsidiary magnet, then the speaker can be assembled, but the second suspension is easily separated during vibration causing air leakage and poor sealing performance
Solution Approach 1:
The patent merges the connecting member function into the subsidiary magnet structure by providing a groove directly on the subsidiary magnet surface. The second suspension is fixed directly to this groove, eliminating the need for separate connecting members and creating an integrated structure that prevents separation during vibration.
Solution Approach 2:
The patent changes the connection approach from a separate component (connecting member) to a structural feature (groove) on the subsidiary magnet. This dimensional integration ensures the second suspension remains firmly attached during vibration, preventing air leakage and improving sealing performance.
2Reliability
If the bonding surface area between the second suspension and fixing ring is increased, then sealing performance is improved, but the width of the second suspension or magnet area may need to be reduced
Solution Approach 1:
The patent segments the bonding surface into multiple areas by providing both an outer peripheral side groove and an inner peripheral side groove on the subsidiary magnet. The second suspension is fixed to both grooves, creating multiple bonding zones that increase total bonding surface area without requiring a wider suspension structure.
Solution Approach 2:
The patent utilizes the vertical dimension of the subsidiary magnet by creating grooves at different radial positions (outer and inner peripheral sides). This allows the bonding surface area to be increased through vertical/ radial segmentation rather than increasing the horizontal width of the second suspension.
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 significantly improves the sealing and waterproof performance of the speaker by increasing the bonding surface area between the second suspension and the fixing ring, ensuring stable vibration and preventing air leakage.
Implementation Method 1
a magnetic circuit unit driving the vibration unit to vibrate and produce sound; the voice coil is inserted in the magnetic gap
Implementation Method 2
an outer peripheral side of the vibrating portion is fixed to a side of the first suspension close to the second suspension, and an inner peripheral side of the vibrating portion is fixed to a side of the second suspension close to the first suspension
Data Source
AI summary
Provided is a speaker, including a frame, a vibration unit fixed to the frame; and a magnetic circuit unit driving the vibration unit to vibrate and produce sound. The vibration unit includes a diaphragm and a voice coil; the diaphragm includes a first suspension, a second suspension and a vibrating portion; the magnetic circuit unit includes a magnetic gap, and the voice coil is inserted in the magnetic gap; the magnetic circuit unit includes a yoke; and the vibration unit further includes a fixing ring connected to the magnetic circuit unit; an inner peripheral side of the second suspension is fixed to an outer side of the fixing ring; and a connection position of the second suspension and the fixing ring is located between two opposite ends of the fixing ring along a vibrating direction of the diaphragm. With this structure, sealing performance of the speaker is improved.