CN218162813U - Wireless earphone - Google Patents
Wireless earphone Download PDFInfo
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- CN218162813U CN218162813U CN202222438368.9U CN202222438368U CN218162813U CN 218162813 U CN218162813 U CN 218162813U CN 202222438368 U CN202222438368 U CN 202222438368U CN 218162813 U CN218162813 U CN 218162813U
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Abstract
The utility model discloses a wireless earphone, which comprises a loudspeaker, a connecting interface, a switching circuit, a wireless audio output circuit and a chargeable power supply; the connection interface is used for being in wired connection with the data line and comprises an audio interface and a power interface, and the power interface is electrically connected with the rechargeable power supply; the wireless audio output circuit and the connecting interface are electrically connected with the loudspeaker through the switching circuit, and the switching circuit is used for selecting one of the wireless audio output circuit and the audio interface in the connecting interface to be electrically connected with the loudspeaker according to the state of the power interface in the connecting interface; through the wireless earphone who has above-mentioned structure, when the earphone does not have the electricity, accessible data line charges the earphone, still can continue to listen to the audio signal in the terminal simultaneously, is equivalent to converting the wireless reception of earphone into wired reception to effectively promote to use and experience the sense, need not moreover for the earphone configuration box that charges, be favorable to reduce cost.
Description
Technical Field
The utility model relates to the technical field of earphones, especially, relate to a wireless earphone who charges with limit.
Background
The wireless earphone adopts radio waves as an audio information transmission medium, saves wires, is convenient to use and is widely loved by users. For the current wireless headsets, there are roughly three types, namely bluetooth headsets, infrared headsets and 2.4G headsets, according to the difference of wireless networks. However, most of the wireless earphones used at present must be charged in a charging box when the battery is exhausted, and cannot be used during charging, so that the use experience of a user is influenced, and particularly, the wireless earphones are inconvenient to use when in urgent need. Moreover, when the charging box is lost, the earphone cannot be charged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wireless earphone makes its accessible and the data line of terminal connection charge, and still can broadcast the audio data that this terminal provided when charging.
In order to achieve the above object, the present invention discloses a wireless earphone, which comprises a speaker, a connection interface, a switching circuit, a wireless audio output circuit and a rechargeable power supply;
the connection interface is used for being in wired connection with a data line, the connection interface comprises an audio interface and a power supply interface, so that the connection interface can receive an audio signal and a power supply signal output by a terminal connected with the other end of the data line, and the power supply interface is electrically connected with the rechargeable power supply;
the wireless audio output circuit is used for outputting an audio signal received by the wireless earphone from the terminal through a wireless signal;
the wireless audio output circuit and the connection interface are electrically connected with the loudspeaker through the switching circuit, and the switching circuit is used for selecting one of the wireless audio output circuit and the audio interface in the connection interface to be electrically connected with the loudspeaker according to the state of the power interface in the connection interface.
Preferably, when the voltage of the power interface reaches a preset value, the switching circuit adjusts the speaker to be electrically connected with the audio interface.
Preferably, the switching circuit includes a control circuit and a switch circuit, the switch circuit includes a first input terminal, a second input terminal, a common output terminal and a control terminal, the first input terminal is electrically connected to the wireless audio output circuit, the second input terminal is electrically connected to an audio interface in the connection interface, the control circuit is electrically connected between the power interface and the control terminal in the connection interface, the control circuit is configured to generate a first status signal or a second status signal according to a voltage value of the power interface, and the control terminal controls one of the first input terminal and the second input terminal to be connected to the common output terminal according to the first status signal or the second status signal output by the control circuit.
Preferably, the first state signal is at a high level, and the second state signal is at a low level.
Preferably, the control circuit includes a triode transistor, the triode transistor includes a triode or a field effect transistor, a control electrode of the triode transistor is electrically connected to a power interface in the connection interface, and the triode transistor outputs the first state signal or the second state signal to the control terminal of the switch circuit according to a voltage state of the power interface.
Preferably, the control electrode of the triode transistor is electrically connected with the power interface in the connection interface through a voltage division circuit.
Preferably, the connection interface has a Type-c interface standard.
Preferably, the connection interface includes four electrode pads arranged side by side, two of the four electrode pads serve as the audio interface, and the other two of the four electrode pads serve as the power interface.
Preferably, the portable electronic device further comprises a charging circuit electrically connected to the rechargeable power source, and a power interface of the connection interfaces is electrically connected to the charging circuit.
Preferably, the portable terminal further comprises a casing, the loudspeaker, the connection interface, the switching circuit, the wireless audio output circuit and the rechargeable power supply are arranged in the casing, and a microphone is further arranged in the casing.
Compared with the prior art, the utility model discloses wireless earphone is provided with connection interface and switching circuit, like this, when rechargeable power supply in the earphone does not have the electricity, can insert the connection interface with the data line of terminal connection to through with the power interface in the connection interface rechargeable power supply charge, simultaneously, because be provided with the audio interface in the connection interface, switching circuit switches the input of speaker to the audio interface in the connection interface, then the audio signal of broadcast in the terminal accessible audio interface gets into the speaker; therefore, through the wireless earphone with the structure, when the earphone is not powered on, the earphone can be charged through the data line, meanwhile, the user can still continuously listen to the audio signals in the terminal, equivalently, the wireless receiving of the earphone is converted into wired receiving, so that the use experience is effectively improved, a charging box is not required to be configured for the earphone, and the cost is reduced.
Drawings
Fig. 1 is a schematic plane structure diagram of the wireless headset according to the embodiment of the present invention.
Fig. 2 is a schematic diagram of a state of a pair of wireless earphones connected to a data line according to an embodiment of the present invention.
Fig. 3 is a control principle structure diagram of the wireless headset in the embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of the control circuit and the switch circuit according to the embodiment of the present invention.
Detailed Description
In order to explain the technical contents, structural features, objects and effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1 and fig. 2, the present embodiment discloses a wireless headset 100, the wireless headset 100 can communicate with a terminal 7 (such as a mobile phone, a computer, etc.) through a wireless signal to receive an audio signal played in the terminal 7, and the wireless signal can be any one of a bluetooth signal, an infrared signal and a 2.4G signal. As shown in fig. 1 to 3, the wireless headset 100 includes a housing 1, a speaker 2 disposed in the housing 1, a connection interface 3, a switching circuit 4, a wireless audio output circuit 5, and a rechargeable power supply 60.
The connection interface 3 is used for being connected with the data line L in a wired mode, the connection interface 3 comprises an audio interface Au and a power interface Po, so that the connection interface 3 can receive audio signals and power signals output by a terminal 7 connected with the other end of the data line L, and the power interface Po is electrically connected with the rechargeable power supply 60. Since the connection interface 3 in the present embodiment receives the audio signal and the power source signal at the same time, the data line L is required to support transmission of audio and power source and to have audio driving capability.
As for the wireless audio output circuit 5, it is used to output an audio signal received by the wireless headset 100 from the terminal 7 through a wireless signal. Specifically, the wireless audio output circuit 5 includes a wireless module and a main control Module (MCU), and the main control module outputs the received audio signal through the wireless module.
The wireless audio output circuit 5 and the connection interface 3 are electrically connected with the loudspeaker 2 through the switching circuit 4, and the switching circuit 4 is used for selecting one of the wireless audio output circuit 5 and the audio interface Au in the connection interface 3 to be electrically connected with the loudspeaker 2 according to the state of the power interface Po in the connection interface 3.
Specifically, the switching circuit 4 is constantly in a state of electrically connecting the speaker 2 with the wireless audio output circuit 5, and only when the voltage of the power source interface Po reaches a preset value, the switching circuit 4 adjusts the speaker 2 to be electrically connected with the audio interface Au. Thus, when the data line L connected to the terminal 7 is connected to the connection interface 3, the voltage of the power interface Po is increased from OV to the output voltage (e.g. 5V) of the terminal 7 interface, so that the switching circuit 4 operates to disconnect the electrical connection between the speaker 2 and the wireless audio output circuit 5 and simultaneously connect the electrical connection between the speaker 2 and the audio interface Au in the connection interface 3, so that the wireless headset 100 is automatically switched from the wireless state to the wired state.
In another embodiment, as shown in fig. 3, the switching circuit 4 includes a control circuit 40 and a switching circuit 41. The switch circuit 41 includes a first input NO, a second input NC, a common output COM, and a control terminal IN, the first input NO is electrically connected to the wireless audio output circuit 5, and the second input NC is electrically connected to the audio interface Au IN the connection interface 3.
The control circuit 40 is electrically connected between the power interface Po IN the connection interface 3 and the control terminal IN to generate a first status signal or a second status signal according to a voltage value of the power interface Po, and the control terminal IN controls one of the first input terminal NO and the second input terminal NC to be connected with the common output terminal COM according to the first status signal or the second status signal output by the control circuit 40. IN this embodiment, the first input terminal NO of the switch circuit 41 is a normally closed terminal, the second input terminal NC is normally open, and the second input terminal NC is electrically connected to the common output terminal COM only when the control terminal IN is activated. Specifically, the switch circuit 41 is preferably a one-way analog switch chip SGM3157YC6.
IN this embodiment, when the connection interface 3 of the earphone is not connected to the data line L, the voltage of the power interface Po is zero, the control circuit 40 outputs the first state signal to the control terminal IN of the switch circuit 41, the control terminal IN does not operate, the speaker 2 is electrically connected to the wireless audio output circuit 5, and the audio signal received by the earphone from the terminal 7 through the wireless signal is played.
When the connection interface 3 on the earphone is connected to the data line L and the other end of the data line L is connected to the terminal 7, the voltage of the power interface Po is 5V, and reaches or exceeds the preset value, the control circuit 40 outputs a second state signal to the control end IN of the switch circuit 41, the control end IN acts to disconnect the electrical connection between the speaker 2 and the wireless audio output circuit 5, and establish an electrical connection channel between the speaker 2 and the audio interface Au IN the connection interface 3, at this time, the data line L charges the rechargeable power supply 60 through the power interface Po, and at the same time, the speaker 2 can play the audio signal from the terminal 7 transmitted through the data line L.
IN another embodiment, the control circuit 40 includes a triode transistor, which includes a triode transistor or a field effect transistor, a control electrode of the triode transistor is electrically connected to the power interface Po IN the connection interface 3, and the triode transistor outputs the first status signal or the second status signal to the control terminal IN of the switch circuit 41 according to a voltage status of the power interface Po. Specifically, as shown in fig. 4, the triode transistor in the present embodiment is preferably an NMOS transistor Q1, the gate G of the NMOS transistor Q1 is electrically connected to the power interface Po, the source S of the NMOS transistor Q1 is grounded, and the drain D of the NMOS transistor Q1 is electrically connected to the voltage source VBUCK through the pull-up resistor R3.
When the data line L is not connected to the connection interface 3, the gate G of the NMOS transistor Q1 is IN an open state, the D electrode and the S electrode of the NMOS transistor Q1 are disconnected, and the voltage of the potential point a electrically connected to the control terminal IN between the pull-up resistor R3 and the D electrode is the voltage of the voltage source VBUCK, so that the potential point a outputs a high level (first state signal) to the control terminal IN of the switch circuit 41, the control terminal IN does not operate, the connection between the first input terminal NO and the common output terminal COM is maintained, and the speaker 2 plays an audio signal from the wireless audio output circuit 5.
When the connection interface 3 is connected to the data line L connected to the terminal 7, the gate G of the NMOS transistor Q1 receives a voltage of 5V, which satisfies the conduction condition of the NMOS transistor Q1, and the D-pole of the NMOS transistor Q1 is conducted with the S-pole, and since the S-pole is grounded, the voltage of the potential point a between the pull-up resistor R3 and the D-pole, which is electrically connected to the control terminal IN, is zero and drops to a low level, the potential point a outputs a low level (second state signal) to the control terminal IN of the switch circuit 41, the control terminal IN operates to disconnect the connection of the first input terminal NO and the common output terminal COM and connect the second input terminal NC and the common output terminal COM, and the speaker 2 plays the audio signal of the terminal 7 transmitted by the data line L.
Further, referring to fig. 4 again, the control electrode of the triode transistor, i.e., the gate G of the NMOS transistor Q1, is electrically connected to the power interface Po in the connection interface 3 through the voltage dividing circuit F. Specifically, the voltage dividing circuit F includes a first resistor R1 and a second resistor R2 connected in parallel, the first resistor R1 is electrically connected between ground and the gate G, and the second resistor R2 is electrically connected between the gate G and the power source port Po of the connection port 3.
With the wireless headset 100 in the above embodiment, as shown in fig. 1, the connection interface 3 includes four electrode pads P arranged side by side, two of the four electrode pads P (e.g., P1, P2) serve as the audio interface Au, and the other two of the four electrode pads P (e.g., P3, P4) serve as the power interface Po.
Optionally, the connection interface 3 has a Type-c interface standard, so that the wireless headset 100 can be charged and provide wired audio transmission using a Type-c data line commonly used on the terminal 7.
In another embodiment, as shown in fig. 3, the wireless headset 100 further includes a charging circuit 61 electrically connected to the rechargeable power source 60, and the power source port Po in the connection port 3 is electrically connected to the charging circuit 61. In this embodiment, the requirement for the power signal in the data line L can be reduced by the arrangement of the charging circuit 61, and the adaptability to the data line L is good.
In addition, a microphone (not shown) is further disposed in the housing 1, so that the wireless headset 100 has a conversation function.
To sum up, as in fig. 1 to 4, the utility model discloses a wireless earphone 100, including casing 1, both disposed speaker 2, wireless audio output circuit 5, chargeable source 60, microphone in the casing 1, still disposed connection interface 3 and switching circuit 4, be provided with four electrode slices P in the connection interface 3 side by side, wherein two electrode slices P are as audio interface Au, and other two electrode slices P are as power source Po. When the electric quantity of the rechargeable power supply 60 in the wireless earphone 100 is consumed completely, the Type-c data line L is used for connecting the connection interface 3 of the wireless earphone 100 with the terminal 7, a power supply signal and an audio signal output by the terminal 7 enter the connection interface 3 through the Type-c data line L, then the power supply signal enters the rechargeable power supply 60 through the power supply interface Po, and the audio signal enters the loudspeaker 2 through the audio interface Au, so that the wireless earphone 100 can be charged through the terminal 7 and the data line L, meanwhile, the audio signal played on the terminal 7 can be listened to through the data line L, the wireless earphone can be charged while the user is used, the use experience of the user is effectively improved, a charging box is omitted, the wireless earphone is convenient to carry, and the wireless earphone is low in cost.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A wireless earphone is characterized by comprising a loudspeaker, a connecting interface, a switching circuit, a wireless audio output circuit and a rechargeable power supply;
the connection interface is used for being in wired connection with a data line, the connection interface comprises an audio interface and a power supply interface, so that the connection interface can receive an audio signal and a power supply signal output by a terminal connected with the other end of the data line, and the power supply interface is electrically connected with the rechargeable power supply;
the wireless audio output circuit is used for outputting an audio signal received by the wireless earphone from the terminal through a wireless signal;
the wireless audio output circuit and the connection interface are electrically connected with the loudspeaker through the switching circuit, and the switching circuit is used for selecting one of the wireless audio output circuit and the audio interface in the connection interface to be electrically connected with the loudspeaker according to the state of the power interface in the connection interface.
2. The wireless headset of claim 1, wherein the switching circuit adjusts the speaker to be electrically connected to the audio interface when the voltage of the power interface reaches a predetermined value.
3. The wireless headset of claim 2, wherein the switching circuit comprises a control circuit and a switch circuit, the switch circuit comprises a first input terminal, a second input terminal, a common output terminal, and a control terminal, the first input terminal is electrically connected to the wireless audio output circuit, the second input terminal is electrically connected to an audio interface of the connection interface, the control circuit is electrically connected between the power interface of the connection interface and the control terminal, the control circuit is configured to generate a first status signal or a second status signal according to a voltage value of the power interface, and the control terminal controls one of the first input terminal and the second input terminal to be connected to the common output terminal according to the first status signal or the second status signal output by the control circuit.
4. The wireless headset of claim 3, wherein the control circuit comprises a triode transistor, the triode transistor comprises a triode or a field effect transistor, a control electrode of the triode transistor is electrically connected to a power interface of the connection interfaces, and the triode transistor outputs the first status signal or the second status signal to the control terminal of the switch circuit according to a voltage status of the power interface.
5. The wireless headset of claim 4, wherein the first status signal is high and the second status signal is low.
6. The wireless earphone according to claim 4, wherein the control electrode of the triode transistor is electrically connected with the power interface of the connection interface through a voltage division circuit.
7. The wireless headset of claim 1, wherein the connection interface has a Type-c interface standard.
8. The wireless headset of claim 1, wherein the connection interface comprises four electrode pads arranged side-by-side, two of the four electrode pads serving as the audio interface and two other of the four electrode pads serving as the power interface.
9. The wireless headset of claim 1, further comprising a charging circuit electrically connected to the rechargeable power source, wherein a power interface of the connection interfaces is electrically connected to the charging circuit.
10. The wireless headset of claim 1, further comprising a housing, wherein the speaker, the connection interface, the switching circuitry, the wireless audio output circuitry, and the rechargeable power source are disposed within the housing, and wherein a microphone is further disposed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222438368.9U CN218162813U (en) | 2022-09-14 | 2022-09-14 | Wireless earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222438368.9U CN218162813U (en) | 2022-09-14 | 2022-09-14 | Wireless earphone |
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| Publication Number | Publication Date |
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| CN218162813U true CN218162813U (en) | 2022-12-27 |
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| CN202222438368.9U Active CN218162813U (en) | 2022-09-14 | 2022-09-14 | Wireless earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595463A (en) * | 2024-01-18 | 2024-02-23 | 广东鼎创智造科技有限公司 | Microphone transmitting end charging bin charging and Type-C port charging switching method |
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2022
- 2022-09-14 CN CN202222438368.9U patent/CN218162813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595463A (en) * | 2024-01-18 | 2024-02-23 | 广东鼎创智造科技有限公司 | Microphone transmitting end charging bin charging and Type-C port charging switching method |
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