CN216217510U - Suspension type open earphone based on D-type power amplifier - Google Patents
Suspension type open earphone based on D-type power amplifier Download PDFInfo
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- CN216217510U CN216217510U CN202122746332.2U CN202122746332U CN216217510U CN 216217510 U CN216217510 U CN 216217510U CN 202122746332 U CN202122746332 U CN 202122746332U CN 216217510 U CN216217510 U CN 216217510U
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- 239000000725 suspension Substances 0.000 title abstract description 14
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 239000010752 BS 2869 Class D Substances 0.000 claims 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a suspension type open earphone based on a D-type power amplifier, which comprises an earphone body, an ear-hanging part and a battery pack, wherein a PCB (printed circuit board) and a loudspeaker are arranged IN the earphone body, a Bluetooth module and a D-type power amplifier module are arranged on the PCB, an Audio Out _ P pin of the Bluetooth module is connected to an IN + pin of the D-type power amplifier module through a first capacitor, an Audio Out _ N pin of the Bluetooth module is connected to an IN-pin of the D-type power amplifier module through a second capacitor, an OUT + pin of the D-type power amplifier module is connected to the anode of the loudspeaker, and an OUT-pin of the D-type power amplifier module is connected to the cathode of the loudspeaker. The utility model is beneficial to enhancing the bass effect and improving the energy conversion efficiency, thereby improving the use experience.
Description
Technical Field
The utility model relates to an earphone, in particular to a suspension type open earphone based on a D-type power amplifier.
Background
Among the existing earphone products, take the suspension type open earphone as an example, the suspension type open earphone is far away from the human ear due to the structural characteristics, the sound outlet hole of the loudspeaker is not provided with a closed earphone shell cavity, the sound field is wide, the sound is loose, the general sound density of the open earphone is relatively low, the low frequency and the texture are relatively lost, and the use experience of a user is obviously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a suspension type open earphone based on a D-type power amplifier, which is beneficial to enhancing the bass effect and improving the energy conversion efficiency so as to improve the use experience, aiming at the defects of the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme.
The utility model provides a hang open earphone of type based on D type power amplifier, its including the earphone body, the ears portion with the battery package, this internal PCB board and loudspeaker that is equipped with of earphone, be equipped with bluetooth module and D type power amplifier module on the PCB board, bluetooth module's Audio Out _ P pin is connected IN the IN + pin of D type power amplifier module through first electric capacity, bluetooth module's Audio Out _ N pin passes through second electric capacity and connects IN the IN-pin of D type power amplifier module, the OUT + pin of D type power amplifier module is connected IN loudspeaker anodal, the OUT-pin of D type power amplifier module is connected IN the loudspeaker negative pole.
Preferably, a pin GPIO _10 of the bluetooth module is grounded through a first resistor and a second resistor connected in series in sequence, and a connection point of the first resistor and the second resistor is connected to a Mute pin of the class D power amplifier module.
Preferably, a first bidirectional voltage stabilizing diode is connected between the anode of the horn and the ground.
Preferably, a third capacitor is connected between the positive electrode of the horn and the ground.
Preferably, a second bidirectional voltage regulator diode is connected between the cathode of the horn and the ground.
Preferably, a fourth capacitor is connected between the cathode of the horn and the ground.
Preferably, be equipped with the battery in the battery package, be equipped with the management module that charges on the PCB board, the VBUS end of the management module that charges is connected in the interface that charges, the input of the management module that charges is connected in the battery positive pole, the output of the management module that charges connect in bluetooth module's power end.
Preferably, the GPIO _02 pin of the bluetooth module is connected to the INT pin of the charge management module.
Preferably, the BT _ RF pin of the bluetooth module is connected to the antenna through two pi-type filters connected in series in sequence.
Preferably, the chip model of the bluetooth module is XXXX, the chip model of the class D power amplifier module is XXXX, and the chip model of the charging management module is XXXX.
In the suspended open type earphone based on the D type power amplifier, the D type power amplifier module is connected between the Bluetooth module and the loudspeaker and is used for amplifying the audio signal output by the Bluetooth module, so that the bass effect of the suspended open type earphone is enhanced, the listening experience of a user is obviously improved, on the basis, the energy conversion efficiency of the D type power amplifier module is up to more than 90%, the electric quantity of a battery can be more fully utilized, the endurance time of the suspended open type earphone is effectively prolonged, and the application requirement is well met.
Drawings
Fig. 1 is a structural view of a suspension type open earphone of the present invention;
fig. 2 is a circuit block diagram of the hanging type open earphone of the present invention;
fig. 3 is a schematic diagram of a partial circuit of a suspension type open earphone according to the present invention;
fig. 4 is a schematic diagram of a partial circuit of the suspension type open earphone of the present invention.
Detailed Description
The utility model is described in more detail below with reference to the figures and examples.
The utility model discloses a suspension type open earphone based on a D-type power amplifier, which is shown by combining fig. 1 to fig. 4 and comprises an earphone body 1, an ear hanging part 2 and a battery pack 3, wherein a PCB (printed circuit board) and a loudspeaker are arranged IN the earphone body 1, a Bluetooth module U1 and a D-type power amplifier module U2 are arranged on the PCB, an Audio Out _ P pin of the Bluetooth module U1 is connected with an IN + pin of the D-type power amplifier module U2 through a first capacitor C9, an Audio Out _ N pin of the Bluetooth module U1 is connected with an IN-pin of the D-type power amplifier module U2 through a second capacitor C10, an OUT + pin of the D-type power amplifier module U2 is connected with a loudspeaker anode SPK +, and an OUT-pin of the D-type power amplifier module U2 is connected with a loudspeaker cathode SPK-.
In the structure, the D-type power amplifier module U2 is connected between the Bluetooth module U1 and the loudspeaker and is used for amplifying the audio signal output by the Bluetooth module U1, so that the bass effect of the suspended open type earphone is enhanced, the listening experience of a user is obviously improved, on the basis, the energy conversion efficiency of the D-type power amplifier module U2 is up to more than 90%, the electric quantity of a battery can be more fully utilized, the endurance time of the suspended open type earphone is effectively prolonged, and the application requirement is well met.
The embodiment preferably has a Mute control function, specifically, the GPIO _10 pin of the bluetooth module U1 is grounded through a first resistor R5 and a second resistor R6 that are sequentially connected in series, and a connection point of the first resistor R5 and the second resistor R6 is connected to a Mute pin of the class D power amplifier module U2.
In order to improve the stability of the audio signal applied to the speaker, in this embodiment, a first bi-directional zener diode D2 is connected between the speaker positive electrode SPK + and the ground. And a third capacitor C17 is connected between the horn anode SPK + and the ground.
Further, a second bidirectional voltage stabilizing diode D1 is connected between the cathode SPK-of the horn and the ground. And a fourth capacitor C16 is connected between the cathode SPK-of the horn and the ground.
As a preferable mode, a battery is disposed in the battery pack 3, a charging management module U3 is disposed on the PCB, a VBUS end of the charging management module U3 is connected to the charging interface J3, an input end of the charging management module U3 is connected to an anode of the battery, and an output end of the charging management module U3 is connected to a power end of the bluetooth module U1.
In order to control the charging and discharging states of the charging management module U3, in this embodiment, the GPIO _02 pin of the bluetooth module U1 is connected to the INT pin of the charging management module U3.
Preferably, the BT _ RF pin of the bluetooth module U1 is connected to the antenna through two pi-type filters connected in series in sequence.
Regarding chip type selection, in this embodiment, the chip type of the bluetooth module U1 is XXXX, the chip type of the class D power amplifier module U2 is XXXX, and the chip type of the charging management module U3 is XXXX.
Compared with the prior art, the suspension type open earphone disclosed by the utility model has the beneficial effects that the D-type power amplifier is preferably added on the suspension type open earphone, the bass effect can be effectively enhanced, the listening experience of a user is further improved, in addition, the endurance time of the suspension type open earphone can be prolonged by utilizing the high energy conversion efficiency of the D-type power amplifier, and the user needs and the market needs are better met.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents or improvements made within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a hang open earphone of type based on D class power amplifier, its characterized IN that, including earphone body (1), hangers portion (2) and battery package (3), be equipped with PCB board and loudspeaker IN earphone body (1), be equipped with bluetooth module (U1) and D class power amplifier module (U2) on the PCB board, the Audio Out _ P pin of bluetooth module (U1) is connected IN the IN + pin of D class power amplifier module (U2) through first electric capacity (C9), the Audio Out _ N pin of bluetooth module (U1) is connected IN the IN-pin of D class power amplifier module (U2) through second electric capacity (C10), the OUT + pin of D class power amplifier module (U2) is connected IN loudspeaker positive pole (SPK +), the OUT-pin of D class power amplifier module (U2) is connected IN loudspeaker negative pole (SPK-).
2. The suspended open type earphone based on class D power amplifier of claim 1, wherein the GPIO _10 pin of the Bluetooth module (U1) is grounded through a first resistor (R5) and a second resistor (R6) which are connected in series in sequence, and the connection point of the first resistor (R5) and the second resistor (R6) is connected with the Mute pin of the class D power amplifier module (U2).
3. The suspended open type earphone based on class-D power amplifier as claimed in claim 1, wherein a first bi-directional zener diode (D2) is connected between the speaker anode (SPK +) and ground.
4. The suspended open earphone based on class-D power amplifier of claim 1, wherein a third capacitor (C17) is connected between the speaker anode (SPK +) and ground.
5. The suspended open earphone based on class-D power amplifier according to claim 1, wherein a second bi-directional zener diode (D1) is connected between the negative pole (SPK-) of the speaker and ground.
6. The suspended open earphone based on class-D power amplifier of claim 1, wherein a fourth capacitor (C16) is connected between the negative pole of the speaker (SPK-) and ground.
7. The suspended open earphone based on class-D power amplifier as claimed in claim 1, wherein a battery is disposed in the battery pack (3), a charging management module (U3) is disposed on the PCB, the VBUS end of the charging management module (U3) is connected to the charging interface (J3), the input end of the charging management module (U3) is connected to the positive electrode of the battery, and the output end of the charging management module (U3) is connected to the power source end of the Bluetooth module (U1).
8. The suspended open earphone based on class-D power amplifier of claim 7, wherein GPIO _02 pin of the Bluetooth module (U1) is connected to INT pin of the charging management module (U3).
9. The suspended open earphone based on class-D power amplifier of claim 1, wherein the BT _ RF pin of the bluetooth module (U1) is connected to the antenna through two pi-type filters connected in series in turn.
10. The suspended open earphone based on class D power amplifier of claim 1, wherein the chip model of the Bluetooth module (U1) is XXXXXX, the chip model of the class D power amplifier module (U2) is XXXXXX, and the chip model of the charging management module (U3) is XXXXXX.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122746332.2U CN216217510U (en) | 2021-11-11 | 2021-11-11 | Suspension type open earphone based on D-type power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122746332.2U CN216217510U (en) | 2021-11-11 | 2021-11-11 | Suspension type open earphone based on D-type power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216217510U true CN216217510U (en) | 2022-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122746332.2U Active CN216217510U (en) | 2021-11-11 | 2021-11-11 | Suspension type open earphone based on D-type power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216217510U (en) |
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2021
- 2021-11-11 CN CN202122746332.2U patent/CN216217510U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221222 Address after: Room 611, Building 2, Liutang Sunshine Garden, Liutang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Taosheng Technology Co.,Ltd. Address before: 314, building H2, East Industrial Zone, overseas Chinese town, No.1 Xiangshan East Street, Guanghua Street community, Shahe street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Dashi Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230731 Address after: 518000 2106, Main Building, No. 1, Qiaocheng Plaza, No. 2, Shenyun Road, Gaofa Community, Shahe Street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Dashi Future Technology Co.,Ltd. Address before: Room 611, Building 2, Liutang Sunshine Garden, Liutang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Taosheng Technology Co.,Ltd. |