SPEAKER AND WIRELESS CHARGING SYSTEM USING SAME

• US 20100215203A1
• Filed: 06/30/2009
• Published: 08/26/2010
• Est. Priority Date: 02/26/2009
• Status: Active Grant

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Sip, Kim-Yeung
• Granted Patent: US 8,073,172 B2
• Time in Patent Office: Days
• US Class Current: 381/386
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/15 using ultrasonic waves
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S

Abstract

A speaker includes a casing, a sound emitting portion, a conductive coil received in the casing, and a circuit board. The casing includes a side wall. The sound emitting portion received in the casing includes a diaphragm including a first end fixed to the casing and an opposite second end. The conductive coil includes a front end fixed to the side wall, and a rear end fixedly connected to the second end of the diaphragm. The circuit board includes an audio processing module, a charging module and a controlling module. The audio processing module is configured for receiving an audio signal and controlling the conductive coil to vibrate in response to the received audio signal. The charging module is configured for electrifying the conductive coil using alternating current. The controlling unit is configured for selectively connecting the conductive coil to the audio processing module electrically or to the charging module.

Claims

1. A speaker, comprising:

a casing comprising a side wall;

a sound emitting portion received in the casing, and comprising a diaphragm, the diaphragm comprising a first end fixed to the casing and an opposite second end;

a conductive coil received in the casing, and comprising a front end and a rear end, the front end fixed to the side wall, the rear end fixedly connected to the second end of the diaphragm; and

a circuit board comprising an audio processing module, a charging module and a controlling module, the audio processing module configured for receiving an audio signal and controlling the conductive coil to vibrate in response to the received audio signal, the charging module configured for electrifying the conductive coil using alternating current, the controlling unit configured for selectively connecting the conductive coil to the audio processing module electrically or to the charging module.

2. The speaker as claimed in claim 1, wherein the side wall comprises a positioning pole extending therefrom, and the front end of the conductive coil is fixed to the positioning pole.

3. The speaker as claimed in claim 1, wherein the casing further comprises an upper wall approximately perpendicular to the side wall, and a plurality of through holes are defined in the upper wall.

4. The speaker as claimed in claim 1, wherein the casing further comprises a lower cover approximately perpendicular to the side wall, the lower cover comprising an inner surface and an outer surface, a hollow receiving pole extending perpendicularly from the inner surface, a through hole defined through the receiving pole, the inner surface and the outer surface, the receiving pole comprising a distal end and an opposite root end, wherein the distal end forms an inner flange portion in the through hole, and the root end forms inner threads in the through hole.

5. The speaker as claimed in claim 1, wherein the sound emitting portion comprises a supporting plate, the supporting plate comprising a first side, and a second side opposite to the first side, a protrusion formed along the second side, an elongated through hole defined through the protrusion, the second end of the diaphragm received in the elongated through hole, the first end of the diaphragm fixed to the first side.

6. The speaker as claimed in claim 4, further comprising a connecting plate, the connecting plate connecting the second end of the diaphragm to the rear end of the conductive coil.

7. The speaker as claimed in claim 6, further comprising a stopping portion moveably received in the through hole, a positioning through hole defined in the connecting plate and aligned with the through hole.

8. The speaker as claimed in claim 2, wherein a plurality of circular recesses are defined in an inner surface of the side wall, and a plurality of permanent magnets are fixed inside the plurality of circular recesses respectively, the positioning pole surrounded by the plurality of permanent magnets.

9. A wireless charging system, comprising

a speaker, comprising:

a casing comprising a side wall;

a sound emitting portion received in the casing, and comprising a diaphragm, the diaphragm comprising a first end fixed to the casing and an opposite second end;

a first conductive coil received in the casing, and comprising a front end and a rear end, the front end fixed to the side wall, the rear end fixedly connected to the second end of the diaphragm; and

a circuit board comprising an audio processing module, a first charging module and a controlling module, the audio processing module configured for receiving an audio signal and controlling the first conductive coil to vibrate in response to the received audio signal, the first charging module configured for electrifying the first conductive coil using alternating current, the controlling unit configured for selectively connecting the first conductive coil to the audio processing module electrically or to the first charging module; and

an electronic device attached to the side wall, the electronic device comprising a rechargeable battery, a second conductive coil and a second charging module, the second conductive coil magnetically coupled to the first conductive coil, the second charging module configured for charging the rechargeable battery using current induced in the second conductive coil by the first conductive coil.

10. The wireless charging system as claimed in claim 9, wherein the side wall comprises a positioning pole extending therefrom, and the front end of the first conductive coil is fixed to the positioning pole.

11. The wireless charging system as claimed in claim 9, wherein the casing further comprises an upper wall approximately perpendicular to the side wall, and a plurality of through hole is defined in the upper wall.

12. The wireless charging system as claimed in claim 9, wherein the casing further comprises a lower cover approximately perpendicular to the side wall, the lower cover comprising an inner surface and an outer surface, a hollow receiving pole extending perpendicularly from the inner surface, a through hole defined through the receiving pole, the inner surface and the outer surface, the receiving pole comprising a distal end and an opposite root end, wherein at the distal end, an inner flange portion is formed in the through hole, and at the root end, inner threads are formed around the through hole.

13. The wireless charging system as claimed in claim 9, wherein the sound emitting portion comprises a supporting plate, the supporting plate comprising a first side, and a second side opposite to the first side, a protrusion formed along the second side, an elongated through hole defined through the protrusion, the second end of the diaphragm received in the elongated through hole, the first end of the diaphragm fixed to the first side.

14. The wireless charging system as claimed in claim 12, further comprising a connecting plate, the connecting plate connecting the second end of the diaphragm to the rear end of the first conductive coil.

15. The wireless charging system as claimed in claim 14, further comprising a stopping portion moveably received in the through hole, a positioning through hole defined in the connecting plate and aligned with the through hole.

16. The wireless charging system as claimed in claim 10, wherein a plurality of circular recesses are defined in an inner surface of the side wall, and a plurality of permanent magnets are fixed inside the plurality of circular recesses respectively, the positioning pole surrounded by the plurality of permanent magnets.