Multi-strand independent input-output voice coil

• US 10,277,984 B2
• Filed: 05/07/2017
• Issued: 04/30/2019
• Est. Priority Date: 06/21/2016
• Status: Active Grant

• Current Assignee: Dongguan LI YIN Technology Limited (LI YIN Technology Limited)
• Original Assignee: Dongguan LI YIN Technology Limited (LI YIN Technology Limited)
• Inventors: Liao, Huangtung
• Primary Examiner(s): Kuntz, Curtis A
• Assistant Examiner(s): Robinson, Ryan
• Application Number:
  US15/588,685
• Publication Number:
  US 20170366901A1
• Time in Patent Office: 723 Days
• Field of Search: 381402, 381410, 381401
• CPC Class Codes: H04R 1/24 Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
• CPC Class Codes: H04R 2209/041 Voice coil arrangements comprising more than one voice coil unit on the same bobbin
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
• CPC Class Codes: H04R 31/00 Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182
• CPC Class Codes: H04R 9/046 Construction
• CPC Class Codes: H04R 9/06 Loudspeakers

Abstract

Disclosed is a multi-strand independent input-output voice coil. The voice coil is a potted coil, which is formed by winding in the following steps: a. forming a multi-strand flat cable by synchronizing and juxtaposing at least two enameled wires; b. winding the multi-strand flat cable to form the potted coil, each enameled wire including independent current input and output ends; and c. under the control of an ICE chip, forming, by the enameled wires together, a multiple-input multiple-output electrical connection end to correspond to vibration drive control of sounds at different frequencies separately. During use, the independent current input and output ends of the enameled wires reduce impact of inertia in vibration of a vibrating diaphragm and impact of a frequency and current on a sound during a change in a volume or tone. Quality of a sound made by the loudspeaker is notably improved.

Claims

1. A multi-strand independent input-output voice coil, controlled by an In Circuit Emulator (ICE) chip to function, wherein the multi-strand independent input-output voice coil is a potted coil, and the potted coil is formed by winding in the following steps:

a. forming a multi-strand flat cable by synchronizing and juxtaposing at least two enameled wires, the enameled wires being independent of and being insulated from each other; and

b. winding the multi-strand flat cable to form the potted coil, each enameled wire comprising independent current input and output ends;

wherein under the control of the ICE chip, the at least two enameled wires of the potted coil together form a multiple-input multiple-output electrical connection end to correspond to vibration drive control of sounds at different frequencies separately, wherein different sound frequencies are driven by coils formed by winding different enameled wires.

2. The multi-strand independent input-output voice coil according to claim 1, further comprising a voice coil framework, wherein the multi-strand flat cable is wound on the voice coil framework.

3. The multi-strand independent input-output voice coil according to claim 2, wherein the voice coil framework is formed by binding at least one of a reinforced paper layer, an aluminum foil layer or a high-temperature tape layer.

4. The multi-strand independent input-output voice coil according to claim 3, wherein the reinforced paper layer is a paper tube made of brown paper, the aluminum foil layer is an aluminum tube made of an aluminum foil sheet, and the high-temperature tape layer is a high-temperature tape tube made of a high-temperature tape sheet.

5. The multi-strand independent input-output voice coil according to claim 2, wherein the potted coil is a circular ring-shaped coil, an elliptical coil, a rectangular coil, a square coil, an octagonal coil, a regular hexagon-shaped coil, or a racetrack-shaped coil, and the voice coil framework corresponds to a shape of the potted coil.

6. The multi-strand independent input-output voice coil according to claim 1, wherein wire diameters of all of the enameled wires in the potted coil are equal.

7. The multi-strand independent input-output voice coil according to claim 6, wherein a quantity of the enameled wires in the multi-strand flat cable is two or more.

8. The multi-strand independent input-output voice coil according to claim 6, wherein when the potted coil is wound, the at least two enameled wires are juxtaposed to form the multi-strand flat cable, then the multi-strand flat cable is wound to form a first layer of a coil with an inner structure and an outer structure, and winding is performed in sequence, to form a multi-strand multi-layer potted coil with an inner structure and an outer structure.