Loudspeaker Vibration System Adhesive-Free Mechanical Fit
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Solution Overview
Problem
The non-uniformity of adhesive thickness in vibration systems of loudspeakers leads to imprecise relationships between vibration components, affecting the acoustic performance of the speaker.
Innovation Solution
A vibration system design that includes a first bracket with connecting holes and blocks, a voice coil portion with a mounting base and voice coil body, and a diaphragm portion, where the diaphragm is connected between the bracket and the mounting base using an injection molding process to ensure precise alignment and improved connection strength, reducing gaps and enhancing acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to connect vibration components, then connection strength is improved, but manufacturing precision deteriorates due to non-uniform adhesive thickness
Solution Approach 1:
The patent removes the adhesive layer from the connection system and replaces it with a mechanical interference fit structure. The second vibration component is designed with a protrusion that fits into a corresponding cavity in the first vibration component, eliminating the need for adhesive and ensuring precise, uniform connections without the thickness variability inherent in adhesive applications.
Solution Approach 2:
The patent introduces a mechanical intermediary structure (the protrusion-cavity interface) between the vibration components to replace the chemical intermediary (adhesive). This mechanical intermediary provides both connection strength and precise geometric relationships through its defined shape and fit, eliminating the non-uniformity problem of adhesive thickness.
2Strength
If adhesive is used to connect vibration components, then connection strength is improved, but acoustic performance deteriorates due to imprecise component relationships
Solution Approach 1:
The patent removes the adhesive layer that causes non-uniform connections and replaces it with a precision mechanical fit. The protrusion and cavity design ensures consistent geometric relationships between vibration components, which is critical for maintaining precise vibration patterns and optimal acoustic performance while still providing strong connections.
Solution Approach 2:
The patent changes the connection mechanism from a material-based parameter (adhesive thickness) to a geometric parameter (protrusion-cavity fit dimensions). This parameter change ensures uniform, controlled relationships between components, improving acoustic performance by eliminating the variability introduced by adhesive thickness non-uniformity.
Data Source
AI summary
A vibration system which does not rely on adhesive assembly includes a first bracket and a vibration assembly. The vibration assembly includes a voice coil portion and a first diaphragm portion. The voice coil portion includes a mounting base and a voice coil body. The voice coil body surrounds an outer surface of the mounting base. Through holes define in one end of the mounting base. The through holes penetrate the base. The first diaphragm portion includes two connecting portions and a diaphragm body between the two connecting portions. A first connecting portion connects the first bracket. A second connecting portion surrounds an end of the mounting base away from the voice coil body, and the second connecting portion inserts into the through hole. The disclosure further provides a loudspeaker and a method for manufacturing the vibration system.