CN219697857U - Earphone assembly - Google Patents
Earphone assembly Download PDFInfo
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- CN219697857U CN219697857U CN202320837001.6U CN202320837001U CN219697857U CN 219697857 U CN219697857 U CN 219697857U CN 202320837001 U CN202320837001 U CN 202320837001U CN 219697857 U CN219697857 U CN 219697857U
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- 230000006698 induction Effects 0.000 claims abstract description 75
- 230000004907 flux Effects 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims description 20
- 230000005669 field effect Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 4
- 239000010960 cold rolled steel Substances 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 210000000959 ear middle Anatomy 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses an earphone assembly, which comprises: the earphone box is internally provided with a containing cavity and a magnetic piece; the earphone body can be accommodated in the accommodating cavity, and an induction coil is arranged on the earphone body; the controller is connected with the induction coil, and is used for determining a voltage signal according to magnetic flux change formed between the magnetic piece and the induction coil, determining that the earphone body is in a box-in state when the voltage signal meets a box-in voltage condition, and determining that the earphone body is in a box-out state when the voltage signal meets a box-out voltage condition. Adopt this earphone subassembly can be through setting up induction coil in the earphone, realized the judgement to the income box state of earphone and go out the box state, and the earphone can not receive the magnetic field interference and produce the noise, has improved earphone tone quality and user experience.
Description
Technical Field
The utility model relates to the technical field of earphones, in particular to an earphone assembly.
Background
With the progress of technology, users have increasingly demanded portability and sound quality of headphones, and the popularity of TWS (True Wireless Stereo, truly wireless stereo) bluetooth headphones has increased.
In the related art, a coil is arranged in an earphone box and a magnetic piece is arranged on the earphone, and the in-box state of the earphone is judged through the induction current direction of the coil in the earphone box. However, set up the magnetic part in the earphone for the user takes place the displacement in the in-process of using the earphone, leads to the magnetic part in the earphone to produce the magnetic field that changes, so that earphone microphone receives the interference and produces the noise, thereby influence user experience, in addition, the earphone box only is comparatively rough and the misjudgement rate is higher according to the mode that the current direction of induction in the coil comes the income box state of judging the earphone. If the earphone magnet is close to the coil of the earphone box and is not in the box-in state, the coil of the earphone box still generates induced current, so that the earphone is misjudged to be in the box-in state.
Disclosure of Invention
In order to solve the problem that noise is generated in the earphone microphone due to the magnetic component arranged in the earphone body, the embodiment of the utility model provides an earphone assembly.
An embodiment of the present utility model provides an earphone assembly, including: the earphone box is internally provided with a containing cavity and a magnetic piece; the earphone body can be accommodated in the accommodating cavity, and an induction coil is arranged on the earphone body; the controller is connected with the induction coil, and is used for determining a voltage signal according to magnetic flux change formed between the magnetic piece and the induction coil, determining that the earphone body is in a box-in state when the voltage signal meets a box-in voltage condition, and determining that the earphone body is in a box-out state when the voltage signal meets a box-out voltage condition.
In some embodiments, the magnetic member is a ring magnet, the accommodating cavity includes a first end and a second end opposite to each other, the accommodating cavity is provided with an opening for the earphone body to come in and go out at the first end, and the ring magnet is disposed at the second end of the accommodating cavity.
In some embodiments, the induction coil comprises a coil and a ring-shaped conductor, the coil being wound on the ring-shaped conductor;
the earphone body comprises an ear bag and an ear handle connected with the ear bag, and the induction coil is arranged at one end, far away from the ear bag, of the ear handle.
In some embodiments, the outer wall of the annular electrical conductor is provided with an insulating layer.
In some embodiments, the annular conductor is an annular metal tube made from SPCC cold-rolled steel strip.
In some embodiments, the controller is provided in the earphone body, the controller comprising:
the first end of the amplifying unit is connected with the first end of the induction coil, and the second end of the amplifying unit is connected with the second end of the induction coil and grounded;
the first end of the induction unit is connected with the third end of the amplifying unit, and the second end of the induction unit is grounded; the induction unit is used for inducing the change of magnetic flux and generating a corresponding voltage signal;
the control unit comprises a voltage port and a data port, the voltage port of the control unit is connected with the fourth end of the amplifying unit, the data port of the control unit is connected with the third end of the amplifying unit and the first end of the sensing unit, and the control unit is used for determining the in-box state and the out-box state of the earphone body according to the voltage signal.
In some embodiments, the amplifying unit includes:
the first end of the depletion type N-channel field effect tube is connected with the first end of the induction coil, the second end of the depletion type N-channel field effect tube is connected with the second end of the induction coil and grounded, and the third end of the depletion type N-channel field effect tube is connected with the first end of the induction unit and the data port;
and the first end of the bias resistor is connected with the third end of the depletion type N-channel field effect transistor, and the second end of the bias resistor is connected with the voltage port.
In some embodiments, the sensing unit includes:
the first end of the capacitor is connected with the third end of the amplifying unit and the data port, and the second end of the capacitor is grounded;
and the first end of the first resistor is connected with the first end of the capacitor and the data port, and the second end of the first resistor is grounded.
According to the earphone assembly provided by the embodiment of the utility model, the induction coil is arranged on the earphone body, the magnetic piece is arranged in the earphone box, and the magnetic piece is not arranged in the earphone body, so that the microphone of the earphone body is not interfered by a magnetic field generated by the magnetic piece in the earphone, and a voltage signal is determined through magnetic flux change formed between the magnetic piece and the induction coil, and the earphone body is in the box-in state or the box-out state of the earphone body.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is an elevation view of a middle ear assembly in one embodiment;
FIG. 2 is a partial schematic view of a middle ear assembly according to one embodiment;
FIG. 3 is a left side view of a middle ear assembly according to one embodiment;
FIG. 4 is a top view of a middle ear assembly according to one embodiment;
FIG. 5 is a schematic diagram of a controller in one embodiment.
Reference numerals:
a headset assembly 100;
an earphone box 1; an earphone body 2; an induction coil 3; an insulating layer 4; a controller 5;
a housing chamber 11; a magnetic member 12; an ear cup 21; an ear stem 22; a coil 31; a ring-shaped conductor 32; an amplifying unit 51; a sensing unit 52; a control unit 53; depletion type N channel field effect transistor N1; a bias resistor R0; a capacitor C1; a first resistor R1.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
An embodiment of the present utility model provides an earphone assembly 100, as shown in fig. 1-4, the earphone assembly 100 includes: the earphone box 1, the earphone body 2, and the controller 5 (not shown in the figure).
Wherein, the earphone box 1 is internally provided with a containing cavity 11 and a magnetic piece 12; the earphone body 2 can be accommodated in the accommodating cavity 11, and an induction coil is arranged on the earphone body 2; the controller is connected with the induction coil, and the controller is used for determining a voltage signal according to magnetic flux change formed between the magnetic piece and the induction coil, determining that the earphone body is in a box-in state when the voltage signal meets a box-in voltage condition, and determining that the earphone body is in a box-out state when the voltage signal meets a box-out voltage condition.
In the related art, a coil is arranged in an earphone box and a magnetic piece is arranged on the earphone, and the in-box state of the earphone is judged through the induction current direction of the coil in the earphone box. However, set up the magnetic part in the earphone for the user takes place the displacement in the in-process of using the earphone, leads to earphone magnetic part to produce the magnetic field of change, so that earphone microphone receives the interference and produces the noise, thereby influence user experience, in addition, earphone box only is comparatively rough and the misjudgement rate is higher according to the mode that the direction of induced current in the coil judged the income box state of earphone.
In order to solve the above-mentioned problem, in the earphone assembly 100 of the present utility model, the induction coil 3 is disposed on the earphone body 2, and the magnetic member 12 is disposed in the earphone box 1, and the magnetic member 12 is not disposed in the earphone body 2, and the earphone microphone is not interfered by the magnetic field to generate noise due to the extremely small magnetic field generated by the induction coil 3, when the earphone body 2 is inserted into or taken out of the accommodating cavity 11 of the earphone box 1 by a user, the magnetic flux formed between the magnetic member 12 and the induction coil 3 changes to generate a corresponding induction current, and whether the voltage signal corresponding to the induction current satisfies the voltage condition of the in-box is determined to determine whether the earphone body 2 is in the in-box state, if the voltage signal satisfies the voltage condition of the in-box, it is determined that the earphone body 2 is not in the in-box state, and if the voltage signal does not satisfy the voltage condition of the in-box; and determining whether the earphone body 2 is in the box-out state by judging whether the voltage signal corresponding to the induced current meets the box-out voltage condition or not, if the voltage signal meets the box-out voltage condition, determining that the earphone body 2 is in the box-out state, if the voltage signal does not meet the box-out voltage condition, determining that the earphone body 2 is not in the box-out state, judging whether the earphone body is in the box-in state and the box-out state according to the magnitude of the voltage signal, and not adding a Bluetooth chip in the earphone box, judging whether the earphone body is in the box-in state according to the direction of the induced current generated by a coil in the earphone box, so that misjudgment is not generated on the box-in state of the earphone, and the cost and design difficulty are reduced.
For example, if the voltage condition of the in-box is that the voltage signal is consistent with the in-box voltage threshold, and if the voltage condition of the out-box is that the voltage signal is consistent with the out-box voltage threshold, it is determined whether the earphone body 2 is in the in-box state or the out-box state by comparing the voltage signal corresponding to the induced current with the voltage threshold, that is, if the voltage signal corresponding to the induced current is consistent with the in-box voltage threshold of the earphone body 2 in the in-box state, it is determined that the earphone body 2 is not in the in-box state, and if the voltage signal corresponding to the induced current is inconsistent with the out-box voltage threshold of the earphone body 2 in the out-box state, it is determined that the earphone body 2 is not in the out-box state.
According to the earphone assembly 100 provided by the embodiment of the utility model, the induction coil 3 is arranged on the earphone body 2, the magnetic piece 12 is arranged in the earphone box 1, and the magnetic piece 12 is not arranged in the earphone body 2, so that the microphone of the earphone body 2 is not interfered by the magnetic field generated by the magnetic piece 12 in the earphone, and the voltage signal is determined by the magnetic flux change formed between the magnetic piece 12 and the induction coil 3, and the earphone body 2 is in the box-in state or the box-out state through the voltage signal, therefore, the induction coil 3 is arranged on the earphone body 2, and the magnetic piece 12 is arranged in the earphone box 1, so that the earphone body 2 is not interfered by the magnetic field when the earphone body 2 is in the box-in state or the box-out state is judged, namely, the earphone body 2 does not generate noise any more, the earphone tone quality and the user experience are improved, and in addition, compared with the mode of judging the box-in state of the earphone by the direction of the flow, the voltage signal determined by the change formed between the magnetic piece 12 and the induction coil 3 is in the box-in state or the box-out state, the box-in state of the earphone body is judged, so that the box-in state of the earphone body is judged by the box-in or out state, the box-in state is judged, and the box-in state, and out state, and the box-in state is effectively, and out, and the earphone state is judged.
In some embodiments, the magnetic member 12 is a ring magnet, the accommodating cavity 11 includes a first end and a second end opposite to each other, the accommodating cavity 11 is provided with an opening for the earphone body 2 to go in and out at the first end, and the ring magnet is disposed at the second end of the accommodating cavity 11. In this way, when the user inserts the earphone body 2 into the first end and the second end of the accommodating cavity 11 respectively, the magnetic flux formed between the ring magnet and the induction coil 3 changes to generate corresponding induction current, and whether the earphone body 2 is in the in-box state or the out-box state is determined by judging whether the voltage signal corresponding to the induction current meets the in-box voltage condition or the out-box voltage condition, in the utility model, the induction coil 3 is arranged on the earphone body 2, and the magnetic piece 12 is arranged in the earphone box 1, so that the judgment of whether the earphone body 2 is in the in-box state or the out-box state is realized.
In some embodiments, as shown in fig. 1-4, the induction coil 3 includes a coil 31 and a ring-shaped conductor 32, the coil 31 being wound on the ring-shaped conductor 32; the earphone body 2 comprises an ear bag 21 and an ear handle 22 connected with the ear bag 21, and the induction coil 3 is arranged at one end of the ear handle 22 far away from the ear bag 21.
Specifically, the magnetic part 12 of the earphone box 1 generates a relatively disordered magnetic field, so that the induction coil 3 is arranged on the ear handle 22, and a magnetic field is formed through the annular conductor 32 of the induction coil 3, so that a linear magnetic field which can be used for cutting the coil and is perpendicular to the coil is formed between the magnetic part 12 of the earphone box 1 and the annular conductor 32 of the earphone body 2, and the strength of the magnetic field is relatively strong, and the annular conductor 32 is made of metal rather than magnetic material, so that the microphone of the earphone is not interfered, noise is not generated any more by the earphone, and the user experience is improved.
Based on this, the earphone assembly 100 of the present utility model sets the induction coil 3 in the earphone body 2 and the magnetic element 12 in the earphone box 1, so that the earphone body 2 is in the in-box state and out-box state, and the magnetic field generated by the induction coil 3 set in the earphone body 2 is very small, so that the microphone of the earphone is not interfered, the noise is not generated by the earphone any more, and the earphone tone quality and the user experience are improved.
The material of the coil 31 is an enameled wire, which is not limited.
In some embodiments, since the movement of the coil generates current, an insulating layer 4 is provided on the outer wall of the annular conductor 32, as shown in fig. 1-4, to isolate the coil from the annular conductor 32 by the insulating layer 4, thereby preventing the current generated by the coil from flowing into the annular conductor 32.
In some embodiments, the annular conductor 32 is an annular metal tube made of SPCC cold-rolled steel strip, so that a magnetic field for coil cutting is formed between the annular conductor 32 of the earphone body 2 and the magnetic piece 12 of the earphone box 1.
In some embodiments, the controller is provided in the earphone body, as shown in fig. 5, and the controller 5 includes: an amplifying unit 51, a sensing unit 52 and a control unit 53.
Wherein, the first end of the amplifying unit 51 of the controller is connected with the first end a of the induction coil 3, and the second end of the amplifying unit 51 of the controller is connected with the second end b of the induction coil 3 and grounded; the first end of the sensing unit 52 is connected with the third end of the amplifying unit 51, and the second end of the sensing unit 52 is grounded and used for sensing the change of magnetic flux and generating a corresponding voltage signal; the control unit 53 includes a voltage port VDD and a data port DET, the voltage port VDD of the control unit 53 is connected to the fourth terminal of the amplifying unit 51, the data port DET of the control unit 53 is connected to the third terminal of the amplifying unit 51 and the first terminal of the sensing unit 52, and the control unit 53 is configured to determine the in-box state and the out-box state of the earphone body 2 according to the voltage signal.
Specifically, the annular conductor 32 of the induction coil 3 and the magnetic member 12 form a magnetic field, when a user puts the earphone into the earphone box 1, the coil moves downward with the earphone at a certain speed, an induced electromotive force U1 is formed at two ends of the induction coil 3, the induced electromotive force U1 is amplified by the amplifying unit 51 to form a current signal I1, and then a corresponding voltage signal Ur1 is generated by the sensing unit 52, at this time, a data port of the control unit 53 receives the voltage signal Ur1 generated by the sensing unit 52, the control unit 53 determines whether the earphone body 2 is in the in-box state by judging whether the voltage signal Ur1 meets the in-box voltage condition, for example, the voltage signal Ur1 is compared with an in-box voltage threshold value when the earphone body 2 prestored in the control unit 53 is in the in-box state, and if the voltage signal is matched with the in-box voltage threshold value when the earphone body 2 is in the in-box state, the control unit 53 determines that the earphone body 2 is in the in-box state, therefore the earphone body 2 is in the in-box state, by setting the induction coil 3 in the earphone body 2 and setting the magnetic member 12 in the earphone box 1, the earphone body 2 is in the in-box state.
In addition, if the voltage signal does not match the in-box voltage threshold when the earphone body 2 is in the in-box state, the control unit 53 determines that the earphone body 2 is not in the in-box state. The controller may be a PCB board, which is not limited in this regard.
And when the earphone is taken out of the earphone box 1 by a user, the coil moves upwards along with the earphone at a certain speed, an induced electromotive force U2 is formed at two ends of the induction coil 3, the induced electromotive force U2 is amplified by the amplifying unit 51 to form a current signal I2, and then a corresponding voltage signal Ur2 is generated by the induction unit 52, at this time, a data port of the control unit 53 receives the voltage signal Ur2 generated by the induction unit 52, the control unit 53 determines whether the earphone body 2 is in the box-out state by judging whether the voltage signal Ur2 meets the box-out voltage condition, if the voltage signal Ur2 is compared with the box-out voltage threshold value when the earphone body 2 prestored in the control unit 53 is in the box-out state, and if the voltage signal is matched with the box-out voltage threshold value when the earphone body 2 is in the box-out state, the control unit 53 determines that the earphone body 2 is in the box-out state, so that the earphone body 2 is in the box-out state is judged by arranging the induction coil 3 in the earphone body 2 and arranging the magnetic part 12 in the earphone box 1.
In addition, if the voltage signal does not match the out-box voltage threshold when the earphone body 2 is in the out-box state, the control unit 53 determines that the earphone body 2 is not in the in-box state. The control unit may be a central processing chip, which is not limited.
In some embodiments, as shown in fig. 5, the amplifying unit 51 includes: a depletion N-channel field effect transistor N1 and a bias resistor R0.
The first end G of the depletion type N-channel field effect transistor N1 is connected with the first end of the induction coil 3, the second end S of the depletion type N-channel field effect transistor is connected with the second end of the induction coil 3 and grounded, and the third end D of the depletion type N-channel field effect transistor is connected with the first end and the data port of the induction unit 52; the first end of the bias resistor is connected with the third end D of the depletion type N-channel field effect transistor, and the second end of the bias resistor is connected with the voltage port VDD. With this design, when induced electromotive force is formed at both ends of the induction coil 3, the depletion type N-channel fet N1 of the amplifying unit 51 amplifies the induced electromotive force to form a current signal. And the bias resistor R0 provides current with proper magnitude for the depletion type N-channel field effect transistor N1 so as to enable the depletion type N-channel field effect transistor N1 to be at a proper working point. The bias resistor may be a dc bias resistor, and is not limited thereto.
In some embodiments, as shown in fig. 5, the sensing unit 52 includes: a capacitor C1 and a first resistor R1.
Wherein, the first end of the capacitor C1 is connected with the third end of the amplifying unit 51 and the data port DET, and the second end of the capacitor C1 is grounded; the first end of the first resistor R1 is connected with the first end of the capacitor C1 and the data port, and the second end of the first resistor R1 is grounded. When the induced electromotive force is formed at the two ends of the induction coil 3, the depletion type N-channel field effect transistor N1 of the amplifying unit 51 amplifies the induced electromotive force to form a current signal, a voltage signal is formed at the two ends of the first resistor R1 of the induction unit 52, and interference is filtered through the capacitor C1 of the induction unit 52, so that the voltage signal is transmitted to the control unit 53, so that the control unit 53 can judge the in-box state and the out-box state of the earphone body 2 through the voltage signal.
Based on this, the earphone assembly 100 in the present utility model, by providing the induction coil 3 on the earphone body 2 and providing the magnetic member 12 in the earphone box 1, does not provide the magnetic member 12 in the earphone body 2 any more, so that the microphone and the earphone of the earphone body 2 are no longer interfered by the magnetic field generated by the magnetic member 12 in the earphone, so that the earphone body 2 does not generate noise any more, the earphone tone quality and the user experience are improved, and the earphone body 2 is determined to be in the in-box state or out-box state of the earphone body 2 according to the magnitude of the voltage signal, so that the corresponding operation is performed according to the in-box state or out-box state of the earphone body, such as charging the earphone body when the earphone body is in the in-box state, and the accuracy of judging the in-box state and out-box state of the earphone body 2 is improved and the misjudgment rate is reduced.
Claims (8)
1. An earphone assembly, comprising:
the earphone box is internally provided with a containing cavity and a magnetic piece;
the earphone body can be accommodated in the accommodating cavity, and an induction coil is arranged on the earphone body;
the controller is connected with the induction coil, and is used for determining a voltage signal according to magnetic flux change formed between the magnetic piece and the induction coil, determining that the earphone body is in a box-in state when the voltage signal meets a box-in voltage condition, and determining that the earphone body is in a box-out state when the voltage signal meets a box-out voltage condition.
2. The earphone assembly according to claim 1, wherein the magnetic member is a ring magnet, the housing cavity includes a first end and a second end opposite to each other, the housing cavity is provided with an opening at the first end for the earphone body to enter and exit, and the ring magnet is disposed at the second end of the housing cavity.
3. The earphone assembly according to claim 2, wherein the induction coil comprises a coil and a ring-shaped conductor, the coil being wound on the ring-shaped conductor;
the earphone body comprises an ear bag and an ear handle connected with the ear bag, and the induction coil is arranged at one end, far away from the ear bag, of the ear handle.
4. A headset assembly according to claim 3, wherein the outer wall of the annular electrical conductor is provided with an insulating layer.
5. The earphone assembly according to claim 3, wherein the annular conductor is an annular metal tube made of SPCC cold-rolled steel strip.
6. The earphone assembly according to any one of claims 1-5, wherein the controller is disposed in the earphone body, the controller comprising:
the first end of the amplifying unit is connected with the first end of the induction coil, and the second end of the amplifying unit is connected with the second end of the induction coil and grounded;
the first end of the induction unit is connected with the third end of the amplifying unit, and the second end of the induction unit is grounded;
the induction unit is used for inducing the change of magnetic flux and generating a corresponding voltage signal;
the control unit comprises a voltage port and a data port, the voltage port of the control unit is connected with the fourth end of the amplifying unit, the data port of the control unit is connected with the third end of the amplifying unit and the first end of the sensing unit, and the control unit is used for determining the in-box state and the out-box state of the earphone body according to the voltage signal.
7. The earphone assembly according to claim 6, wherein the amplifying unit comprises:
the first end of the depletion type N-channel field effect tube is connected with the first end of the induction coil, the second end of the depletion type N-channel field effect tube is connected with the second end of the induction coil and grounded, and the third end of the depletion type N-channel field effect tube is connected with the first end of the induction unit and the data port;
and the first end of the bias resistor is connected with the third end of the depletion type N-channel field effect transistor, and the second end of the bias resistor is connected with the voltage port.
8. The earphone assembly according to claim 6, wherein the sensing unit comprises:
the first end of the capacitor is connected with the third end of the amplifying unit and the data port, and the second end of the capacitor is grounded;
and the first end of the first resistor is connected with the first end of the capacitor and the data port, and the second end of the first resistor is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320837001.6U CN219697857U (en) | 2023-04-13 | 2023-04-13 | Earphone assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320837001.6U CN219697857U (en) | 2023-04-13 | 2023-04-13 | Earphone assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219697857U true CN219697857U (en) | 2023-09-15 |
Family
ID=87967456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320837001.6U Active CN219697857U (en) | 2023-04-13 | 2023-04-13 | Earphone assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219697857U (en) |
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2023
- 2023-04-13 CN CN202320837001.6U patent/CN219697857U/en active Active
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