CN220325783U

CN220325783U - TWS earphone

Info

Publication number: CN220325783U
Application number: CN202321450531.1U
Authority: CN
Inventors: 张金龙
Original assignee: Shenzhen Zowee Technology Co Ltd
Current assignee: Shenzhen Zowee Technology Co Ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2024-01-09
Anticipated expiration: 2033-06-07

Abstract

The utility model discloses a TWS earphone, and relates to the technical field of earphones. The TWS earphone can be expanded to a plurality of people to listen to the audio frequency sent by the same audio source at the same time, the TWS earphone comprises a main control circuit board, an MCU main control chip is arranged on the main control circuit board, two groups of sound channels of left and right ears are respectively connected with the MCU main control chip, a rechargeable battery, a Bluetooth antenna and an OSC crystal oscillator are arranged in one group of sound channels of the left and right ears of the TWS earphone, one sound channel is connected with a loudspeaker, and the other sound channel is connected with a TRRS type four-section stereo plug female seat. The method has the advantages that the method can meet the condition that multiple persons can better listen to the sound source sent by the same terminal at the same time under the condition that the audio is not externally played and noise is not produced; the multi-user double-channel requirement or the multi-user single-channel requirement can be met simultaneously, and the requirement of product function diversification can be improved.

Description

TWS earphone

Technical Field

The utility model relates to the technical field of earphones, in particular to a TWS earphone.

Background

TWS true wireless earphone is used as an accessory of terminal products such as mobile phones, tablets, computers and the like, and becomes one of consumer electronic products for daily home and long-distance travel. The TWS earphone in the current market only supports connecting one terminal for one person or two persons (wearing a single earphone respectively) to use simultaneously, when two persons use, each person carries one earphone respectively, and at the moment, the user feels a single-ear acoustic channel. When more than two friends travel together or need to watch the mobile phone or the film on the tablet at the same time, the method can enable a plurality of people to hear the audio at the same time; and if the public place is selected to play the audio, noise is caused to others.

Disclosure of Invention

In view of this, an object of an embodiment of the present utility model is to provide a TWS earphone, which can be expanded to be used by more than two people at the same time without affecting other people and the same audio output, so as to satisfy a scenario that multiple people need to use the earphone to obtain audio at the same time.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

according to one aspect of the embodiment of the utility model, a TWS earphone is provided, which can be expanded to a way that a plurality of persons listen to the audio frequency emitted by the same audio source at the same time, and comprises a main control circuit board, wherein the main control circuit board is provided with an MCU main control chip, a left ear channel and a right ear channel which are respectively connected with the MCU main control chip, a rechargeable battery, a Bluetooth antenna and an OSC crystal oscillator, one of the left ear channel and the right ear channel of each TWS earphone is connected with a loudspeaker, and the other channel is connected with a TRRS type four-section stereo plug master seat.

The TWS earphone comprises an audio output circuit, wherein the audio output circuit comprises an electrostatic protection unit and a filtering unit.

Wherein, TRRS formula four-section stereophonic plug female seat is connected with static protection unit.

The filtering unit comprises an inductor and a filtering capacitor which are connected with each sound channel, and the inductor and the filtering capacitor are connected in series and are connected with a ground wire.

The static electricity protection unit comprises a bidirectional diode connected with each sound channel, and the bidirectional diode is grounded.

And the main control circuit board is further connected with a microphone.

Wherein, the rechargeable battery who is connected with the main control circuit board still is connected with battery protection circuit.

Wherein, TRRS formula four-section stereophonic plug female seat is connected with wired earphone's plug.

The rechargeable battery connected with the main control circuit board is also connected with a charging input circuit, and the rechargeable battery or the earphone is provided with a charging function through the charging input circuit.

According to the TWS earphone, the TRRS type four-section stereo plug female base is arranged on the earphone and is connected with the sound channel of the TWS earphone, so that the TWS earphone has the advantages that the sound source which is sent out by multiple persons can be better heard by the same terminal under the condition that the sound frequency is not externally played and noise is not produced; the multi-user double-channel requirement or the multi-user single-channel requirement can be met simultaneously, and the requirement of product function diversification can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a TWS headset according to an embodiment of the present utility model;

FIG. 2 is a schematic block diagram of an external expansion wired headset for a TWS headset according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of an audio output circuit of a TWS headset according to an embodiment of the utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the particular embodiments described herein are illustrative only and are not limiting upon the utility model.

Fig. 1 to 3 are schematic structural diagrams of a TWS earphone according to an embodiment of the utility model. Only the portions relevant to the present embodiment are shown for convenience of explanation.

Example 1

Referring to fig. 1 and fig. 2, the embodiment of the application provides a TWS earphone, which can be expanded to be used by multiple people at the same time, so that the output of one sound source can meet the requirement that the multiple people receive audio through the earphone at the same time, and the output of the sound source is not needed to be externally put, so that other people are prevented from being influenced, and the audio output by the same terminal can be shared with other multiple people at the same time.

The TWS earphone comprises a main control circuit board, an MCU main control chip is arranged on the main control circuit board, two groups of sound channels of the left ear and the right ear are respectively connected with the MCU main control chip, a rechargeable battery, a Bluetooth antenna and an OSC crystal oscillator, one sound channel is connected with a loudspeaker, and the other sound channel is connected with a TRRS type four-section stereo plug female seat.

In the TWS Bluetooth headset, every TWS headset all includes a set of sound channel, left ear sound channel and right ear sound channel, and loudspeaker is connected to one sound channel, and another sound channel is connected with TRRS type four-section stereophonic plug female seat, TRRS type four-section stereophonic plug female seat is pegged graft with the plug of outside wired earphone, every TWS Bluetooth headset all can pass through TRRS type four-section stereophonic plug female seat is connected with the plug of a wired earphone, and so a pair of TWS Bluetooth headset just can pass through TRRS type four-section stereophonic plug female seat and the plug connection of two wired earphone, just so can extend six people and use the earphone to listen to the audio signal of same terminal output simultaneously, specifically can be according to the demand of sharing personnel decides the quantity that wired earphone inserts, just can pull out wired earphone when not needing.

In an embodiment, the TWS headset comprises an audio output circuit comprising an electrostatic protection unit 22 and a filtering unit 21.

In an embodiment, the TRRS type four-section stereo plug female socket is connected with an electrostatic protection unit. Because the TRRS type four-section type stereo plug female seat is exposed on the outer surface of the earphone, the function of static electricity protection is needed to be carried out on the plug female seat, and therefore the TRRS type four-section type stereo plug female seat is connected with the static electricity protection unit.

In one embodiment, the filtering unit 21 includes an inductor B and a filter capacitor C connected to each channel, and the inductor B and the filter capacitor C are connected in series and are connected to the ground line.

In one embodiment, the electrostatic protection unit 22 includes a bidirectional diode D connected to each channel, and the bidirectional diode D is grounded through a ground line.

In an embodiment, the main control circuit board is also connected with a microphone. The microphone is used for picking up external sound, and when the microphone adopts the noise reduction microphone, the microphone also has the function of reducing noise when picking up external sound.

In an embodiment, the rechargeable battery connected with the main control circuit board is also connected with a battery protection circuit, the rechargeable battery supplies power to the whole earphone, and the battery protection circuit is connected to provide stable power supply voltage for the whole earphone system, so that the normal operation of the earphone is prevented from being influenced by the overcurrent and the overcurrent of the output current.

In an embodiment, the rechargeable battery is further connected with a charging input circuit, and a charging function is provided for the rechargeable battery or the earphone through the charging input circuit.

In an embodiment, the TRRS type four-section stereo plug female socket is connected with a plug of a wired earphone.

In the embodiment described herein, the OSC crystal oscillator provides a clock signal for the entire earphone system.

When the TWS earphone works, the TWS Bluetooth earphone is connected through Bluetooth, one TWS earphone is used as a master earphone, and the other TWS earphone is used as a slave earphone. The master earphone and the slave earphone can be selected by fixing the left earphone or the right earphone as the master earphone through specific software, and can also automatically control the switching of the master earphone and the slave earphone according to the strength of Bluetooth signals. After the connection and pairing of the master ear and the slave ear of the TWS earphone are finished, the master ear is connected with a terminal (a mobile phone or a tablet personal computer and the like), an audio signal of the terminal is transmitted to the master earphone, and the master earphone decodes a playing source after receiving the audio signal; and meanwhile, the signal is transmitted to the slave earphone through Bluetooth, and the slave earphone decodes and plays the audio after receiving the signal. When a plurality of people need to use the device and have expansion requirements, the wired earphone is manually inserted into a TRRS type four-section stereo plug female seat designed on the TWS earphone and is connected with the main board earphone; according to the number of the expanded demands of users, two wired earphones can be respectively inserted into the master ear and the slave ear to be expanded into a pair of TWS earphone and two pairs of wired earphones; only one wired earphone can be inserted into one of the main ear or the slave ear of the TWS earphone, and the TWS earphone and the wired earphone can be expanded into a pair of TWS earphone and a pair of wired earphone. The TWS headset audio signals are directly transmitted to the wired headset through the wire after being decoded. The whole process completes the function of expanding the earphone. A pair of wired earphones (the wired earphone is connected with one of the master earphone and the slave earphone) or two pairs of wired earphones (simultaneously connected with the master earphone and the slave earphone) can be expanded according to personal requirements.

According to the TWS earphone, the TRRS type four-section stereo plug female base is arranged on the earphone and is connected with the sound channel of the TWS earphone, so that the TWS earphone has the advantages that the sound source which is sent out by multiple persons can be better heard by the same terminal under the condition that the sound frequency is not externally put and noise is not produced; the requirements of three persons and two channels or six persons and a single channel can be met simultaneously, and the requirement of product function diversification can be improved.

Compared with the TWS earphone in the prior art, the TWS earphone is double-ear TWS, and cannot meet the use requirements of multiple persons, and the TWS earphone in the embodiment of the application is provided with the TRRS type four-section stereo plug female seat on the earphone and is connected with the sound channel of the TWS earphone, so that the TWS earphone has the sound source that multiple persons can better listen to the same terminal at the same time under the condition that the sound frequency is not externally played and noise is not produced; the method can simultaneously meet the requirement that a plurality of people can use the same terminal sound source.

The preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, and thus do not limit the scope of the claims of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the present utility model shall fall within the scope of the appended claims.

Claims

1. The TWS earphone is characterized by comprising a main control circuit board, wherein an MCU main control chip is arranged on the main control circuit board, two groups of left and right ears are respectively connected with the MCU main control chip, a rechargeable battery, a Bluetooth antenna and an OSC crystal oscillator, one sound channel is connected with a loudspeaker, and the other sound channel is connected with a TRRS type four-section stereo plug female seat.

2. The TWS headset of claim 1, wherein the TWS headset comprises an audio output circuit that includes an electrostatic protection unit and a filtering unit.

3. The TWS headset of claim 2, wherein the TRRS type four-section stereo plug female mount is connected with an electrostatic protection unit.

4. The TWS headset of claim 2, wherein the filter unit includes an inductor and a filter capacitor connected to each of the channels, the inductor and filter capacitor being connected in series and connected to ground.

5. The TWS earphone of claim 2 or 3 wherein the electrostatic protection unit comprises a bi-directional diode connected to each channel, the bi-directional diode being grounded.

6. The TWS headset of claim 5, wherein the main control circuit board is further coupled with a microphone.

7. The TWS headset of claim 6, wherein the rechargeable battery is further coupled with a battery protection circuit.

8. The TWS headset of claim 7, wherein the TRRS type four-section stereo plug female socket is connected to a plug of a wired headset.

9. The TWS headset of claim 8, wherein the rechargeable battery is further coupled with a charging input circuit through which a charging function is provided for the rechargeable battery or headset.