AAC Technologies. has been granted a patent for a coaxial speaker design that features a unique vibration and magnetic circuit system. This design includes multiple vibrating diaphragms and voice coils, effectively reducing sound leakage and enabling a private call function. GlobalData’s report on AAC Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on AAC Technologies, V2V communication antennas was a key innovation area identified from patents. AAC Technologies's grant share as of June 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.

Coaxial speaker with reduced sound leakage and private call function

Source: United States Patent and Trademark Office (USPTO). Credit: AAC Technologies Holdings Inc

The granted patent US12047733B1 describes a coaxial speaker design that integrates a frame, vibration system, and magnetic circuit system. The vibration system features a vibrating diaphragm and a voice coil, while the magnetic circuit system includes a transmission cavity, inner magnetic gap, and outer magnetic gap. The inner magnetic gap is further divided into first and second magnetic gaps, with the transmission cavity extending through the magnetic circuit. The vibrating diaphragm consists of three components: a first, second, and third diaphragm, with the second diaphragm encircling the first. The first and third diaphragms vibrate in opposition, and their peripheries are secured to the magnetic circuit and frame. The voice coil is composed of three coils, each driving a corresponding diaphragm.

Additionally, the magnetic circuit system incorporates a magnetic yoke and a primary magnetic portion, which consists of two magnets and a primary pole core. The design includes through holes that facilitate the division of magnetic gaps and cavities. The patent also details the structure of the wall and plate portions of the primary pole core, which are integral to the magnetic circuit's functionality. Furthermore, a secondary magnetic portion is positioned between the magnetic yoke and the frame, enhancing the speaker's magnetic properties. The second vibrating diaphragm is constructed with an inner and outer body, supported by a framework that connects to the voice coil. Elastic components are included to stabilize the system, and fixing frames are utilized to secure the diaphragms within the magnetic circuit. This innovative design aims to improve the performance and efficiency of coaxial speakers.

To know more about GlobalData’s detailed insights on AAC Technologies, buy the report here.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.