CN211744708U

CN211744708U - Novel receiver with wireless charging and frequency modulation noise reduction functions

Info

Publication number: CN211744708U
Application number: CN202020918479.8U
Authority: CN
Inventors: 黄莉
Original assignee: Shenzhen Aojie Intelligent Technology Co ltd
Current assignee: Shenzhen Aojie Intelligent Technology Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-10-23
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a novel receiver with wireless charging and frequency modulation fall function of making an uproar improves the noise reduction effect of receiver under the basis that does not change the receiver volume, provides the basis for the wireless charging and the waterproof upgrading of TWS bluetooth headset simultaneously. This novel receiver includes: the microphone comprises a microphone support, a magnet arranged at the center of the microphone support, a sounding vibration film arranged on the front surface of the microphone support, a circuit board arranged on the back surface of the microphone support and a wireless charging coil wound on the outer peripheral side of the microphone support. The periphery of magnet is twined audio coil and tuning and is fallen the coil of making an uproar, and audio coil and tuning are fallen the coil of making an uproar and are twined in the periphery of magnet through the mode of double-line duplex winding. The input end and the output end of the wireless charging coil, the audio coil and the tuning noise reduction coil are all led out outwards and welded on the circuit board. The circuit board is provided with an extension FPC, and the extension FPC is connected with a mainboard of the TWS Bluetooth headset through an FPC connector.

Description

Novel receiver with wireless charging and frequency modulation noise reduction functions

Technical Field

The utility model relates to a TWS bluetooth headset charges and the technical field that the receiver tuning frequency was fallen and is fallen the noise especially relates to a novel receiver with wireless function of falling of making an uproar that charges and frequency modulation.

Background

The existing wireless charging technology is mainly applied to products such as mobile phones, charge pal, small household appliances and automobiles. High-power wireless charging product, wireless transmitting disc that charges is big, and wireless receiving disc area requirement is also bigger. The bluetooth headset class product of miniature relatively, because of itself volume is too little, the integrated level is high, is difficult to set up wireless receiving disc that charges. Therefore, the existing wireless charging of the bluetooth headset mainly comprises the steps that a wireless charging receiving coil is arranged in a headset charging bin for wireless charging, and charging is realized between a bluetooth headset body and the charging bin through a contact type thimble and a contact piece. The charging structure does not have waterproofness, and under the power-on condition, if the thimble meets water, electrolysis is easy to generate, the charging connector is corroded, so that normal charging cannot be carried out, and the product cannot be used continuously; and moreover, the design space is also occupied, and the RF design difficulty of the earphone is increased.

The existing noise reduction scheme of the Bluetooth headset is mainly divided into noise reduction of double microphones, noise reduction of single microphone AI and noise reduction of ANC, the noise reduction effects are all not ideal, the requirements on a chip are high, the design of a noise reduction cavity of a structure is difficult, the noise cancellation mixed operation amount is large, and the noise reduction wave band can only be processed aiming at low frequency. The popular ANC noise reduction is complex in production process, low in yield and high in overall cost.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims at providing a novel receiver with wireless charging and frequency modulation fall the function of making an uproar, for the wireless charging and the waterproof upgrading of TWS bluetooth headset provide the basis. Meanwhile, the noise reduction effect of the telephone receiver is improved on the basis of not changing the volume of the telephone receiver.

In order to achieve the above object, the utility model provides a novel receiver with wireless charging and frequency modulation noise reduction function, it includes: the microphone comprises a microphone support, a magnet arranged at the center of the microphone support, a sounding vibration membrane arranged on the front surface of the microphone support, a circuit board arranged on the back surface of the microphone support and a wireless charging coil wound on the outer peripheral side of the microphone support.

The periphery of magnet is twined audio coil and tuning and is fallen the coil of making an uproar, the audio coil with the tuning falls the coil of making an uproar and twines through the mode that double-line duplex winding in the periphery of magnet.

The input end and the output end of the wireless charging coil, the audio coil and the tuning noise reduction coil are all led out outwards and welded on the circuit board. The circuit board is provided with an extension FPC, and the extension FPC is connected with a mainboard of the TWS Bluetooth headset through an FPC connector.

Optionally, the audio coil is formed by winding a first enameled wire, or a plurality of first enameled wires are wound in a parallel winding manner in the same direction.

And the tuning and noise reduction coil is formed by winding a second enameled wire, or a plurality of second enameled wires are wound in the same direction and in parallel.

The wire diameters of the first enameled wire and the second enameled wire are the same.

Optionally, the first enameled wire and the second enameled wire are different in color.

Optionally, the circuit board is a PCB board or an FPC board.

Optionally, a micro-bracket coaxial with the receiver bracket is arranged on the front surface of the receiver bracket, and the wireless charging coil is wound on the micro-bracket.

Optionally, a micro-bracket coaxial with the receiver bracket is arranged on the back of the receiver bracket, and the wireless charging coil is wound on the micro-bracket.

The utility model provides a novel receiver has following advantage:

1. the wireless charging function can be integrated on the telephone receiver under the condition of basically not changing the volume of the telephone receiver, and a foundation is provided for wireless charging of the TWS Bluetooth headset; meanwhile, the TWS Bluetooth headset can be charged without an exposed metal part, and a foundation is provided for the TWS Bluetooth headset in structure simplification, reliability improvement and water prevention.

2. The tuning noise reduction coil and the audio coil are integrated into a whole in a double-wire parallel winding mode and are mutually independent, and the noise reduction effect of the TWS Bluetooth headset can be improved under the condition that the volume of a receiver is not changed. And the normal audio and the noise reduction audio can be processed independently respectively, but the noise reduction algorithm is not relied on, the complexity of the chip audio superposition offset calculation is effectively reduced, and the noise reduction cost is reduced.

3. Just, the negative pole lead-out wire of coil, wireless charging coil of making an uproar is fallen in audio coil, tuning is all connected on the circuit board, has extension FPC on the circuit board, and extension FPC passes through FPC connector and bluetooth headset's mainboard connection, greatly reduced the receiver equipment and adorned the degree of difficulty in bluetooth headset inside, avoided coil and mainboard to adopt the manual welded connection of electronic wire to cause badly.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of an embodiment of the present invention;

fig. 2 is a schematic back view of an embodiment of the present invention;

fig. 3 is a schematic side view of an embodiment of the present invention;

fig. 4 is a schematic side view of another embodiment of the present invention;

fig. 5 is a schematic side view of another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a novel receiver with wireless charging and frequency modulation noise reduction function, it includes receiver support 100, magnet, pronunciation vibrations membrane 200, circuit board 300 and wireless charging coil 400.

The pronunciation vibrating diaphragm 200 is arranged on the front face of the receiver support 100, the magnet is arranged in the center of the receiver support 100, the audio coil 500 and the tuning noise reduction coil 600 are arranged on the periphery of the magnet, and the audio coil 500 and the tuning noise reduction coil 600 are wound on the periphery of the magnet in a double-wire parallel winding mode and connected to the pronunciation vibrating diaphragm 200. The audio coil 500 and the tuning noise reduction coil 600 are parallelly wound by adopting double wires and have integrated coil diameters and mutually independent positive and negative outgoing lines, normal audio and noise reduction audio can be separately and respectively processed, the complexity of chip audio superposition offset calculation is effectively reduced, and the noise reduction cost is reduced.

When the microphone of the Bluetooth headset collects an external environment noise, assuming a square wave, after the chip in the Bluetooth headset receives the square wave, a current signal is generated according to the square wave and output to the noise reduction coil for equal and opposite, and the square wave is offset, so that the effect of offsetting the external environment noise is achieved.

It should be noted that, in the present embodiment, the audio coil 500 may be formed by winding a first enameled wire, or a plurality of first enameled wires wound in a parallel manner. Similarly, the tuning noise reduction coil 600 may also be formed by winding a second enameled wire, or a plurality of second enameled wires wound in the same direction. The wire diameters and the number of the first enameled wire and the second enameled wire are equal.

For example, the audio coil 500 and the tuning and noise reducing coil 600 are formed by winding a first enameled wire and a second enameled wire in a double-wire parallel winding manner, or formed by winding two first enameled wires and two second enameled wires in a four-wire parallel winding manner. The number of the enameled wires used by the audio coil 500 and the tuning noise reduction coil 600 can be set according to actual needs.

For convenience of distinction, the first enameled wire and the second enameled wire may be different colors of enameled wires, for example, the first enameled wire is a gold enameled wire, and the second enameled wire is a red enameled wire.

Wireless charging coil 400 winding is at the periphery side of receiver support 100, is convenient for form the integration with the receiver to under the condition that does not change the receiver volume, integrated wireless charging coil 400 on the receiver provides the basis for TWS bluetooth headset's wireless charging, simultaneously, still make TWS bluetooth headset need not to charge through exposing the metalwork, for TWS bluetooth headset's structure simplification, reliability promotion, waterproof provide the basis. The charging mode of the wireless charging coil 400 may be near-field induction type, near-field resonance type, or far-field resonance type, according to actual requirements.

It should be noted that the shape and the position of the wireless charging coil 400 with respect to the receiver are set according to the external shape and structural design of the receiver. In this embodiment, the wireless charging coil 400 is disposed at the outer peripheral edge of the receiver support 100. In addition, a micro-bracket (not shown) may be disposed on the front or back of the receiver holder 100, and the wireless charging coil 400 may be wound and fixed on the micro-bracket.

The micro bracket can be integrated with the receiver bracket 100 or separated from the receiver bracket, and if the micro bracket is integrated with the receiver bracket 100, the wireless charging coil 400 can be directly wound and fixed on the micro bracket; if the micro-bracket and the receiver bracket 100 are separated, the wireless charging coil 400 can be wound and fixed on the micro-bracket, and then the micro-bracket wound with the wireless charging coil 400 is coaxially fixed on the receiver bracket 100.

The circuit board 300 is disposed on the back of the receiver, and has six electronic wires, namely, an audio positive connection wire, an audio negative connection wire, a noise-reducing positive connection wire, a noise-reducing negative connection wire, a charging positive connection wire and a charging negative connection wire. The positive lead wire 500a of the audio coil 500 is soldered to the circuit board 300 and connected to the audio positive connection line on the circuit board 300, and correspondingly, the negative lead wire 500b of the audio coil 500 is soldered to the circuit board 300 and connected to the audio negative connection line. Similarly, the positive lead 600a and the negative lead 600b of the tuning noise reduction coil 600 are soldered to the circuit board 300 and connected to the noise reduction positive connection line and the noise reduction negative connection line, and the positive lead 400a and the negative lead 400b of the wireless charging coil 400 are soldered to the circuit board 300 and connected to the charging positive connection line and the charging negative connection line. The circuit board 300 also has an extension FPC (not shown) with an FPC connector at the other end, which can be connected to the main board of the TWS bluetooth headset through the FPC connector. From this, need not to connect receiver and mainboard through manual welding electron line, avoided the bad problem that manual welding electron line caused, provide the guarantee basis for bluetooth headset's qualification rate.

The circuit board 300 may be a PCB board or an FPC board. Preferentially adopt the FPC board, thereby the FPC board sets up as an organic whole with extension FPC, simplifies the interior space design.

The utility model provides a novel receiver has following advantage:

2. The tuning noise reduction coil 600 and the audio coil 500 are integrated in a double-wire parallel winding mode and are independent of each other, and the noise reduction effect of the TWS Bluetooth headset can be improved under the condition that the volume of a receiver is not changed. And the normal audio and the noise reduction audio can be processed independently respectively, but the noise reduction algorithm is not relied on, the complexity of the chip audio superposition offset calculation is effectively reduced, and the noise reduction cost is reduced.

3. Coil 600, the tuning of making an uproar falls in audio coil 500, wireless charging coil 400 just, the negative pole lead-out wire all is connected on circuit board 300, has extension FPC on the circuit board 300, and extension FPC passes through FPC connector and bluetooth headset's mainboard connection, greatly reduced the receiver equipment in the inside degree of difficulty of bluetooth headset, avoided coil and mainboard to adopt the manual welded connection of electron line to cause badly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel receiver with wireless charging and frequency modulation noise reduction functions is characterized by comprising: the device comprises a receiver support, a magnet arranged in the center of the receiver support, a sounding vibration membrane arranged on the front surface of the receiver support, a circuit board arranged on the back surface of the receiver support and a wireless charging coil wound on the outer peripheral side of the receiver support;

an audio coil and a tuning noise reduction coil are wound on the periphery of the magnet, and the audio coil and the tuning noise reduction coil are wound on the periphery of the magnet in a double-wire parallel winding mode;

the input end and the output end of the wireless charging coil, the audio coil and the tuning and noise reduction coil are led out outwards and welded on the circuit board; the circuit board is provided with an extension FPC, and the extension FPC is connected with a mainboard of the TWS Bluetooth headset through an FPC connector.

2. The novel receiver with wireless charging and frequency modulation noise reduction functions as claimed in claim 1, wherein the audio coil is formed by winding a first enameled wire, or a plurality of first enameled wires are wound in a co-rotating and parallel manner;

the tuning and noise reducing coil is formed by winding a second enameled wire or a plurality of second enameled wires in a parallel winding manner in the same direction;

3. The novel receiver with wireless charging and frequency modulation noise reduction functions according to claim 2, wherein the first enameled wire and the second enameled wire are different in color.

4. The novel receiver with wireless charging and frequency modulation noise reduction functions as claimed in claim 1, wherein the circuit board is a PCB board or an FPC board.

5. A novel telephone receiver with wireless charging and frequency modulation noise reduction functions as claimed in any one of claims 1-4, wherein the front face of the receiver support is provided with a micro support coaxial therewith, and the wireless charging coil is wound on the micro support.

6. A novel telephone receiver with wireless charging and frequency modulation noise reduction functions as claimed in any one of claims 1-4, wherein the back of the receiver holder is provided with a micro-holder coaxial with the receiver holder, and the wireless charging coil is wound on the micro-holder.