CN215773499U - Loudspeaker and earphone - Google Patents
Loudspeaker and earphone Download PDFInfo
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- CN215773499U CN215773499U CN202121182890.4U CN202121182890U CN215773499U CN 215773499 U CN215773499 U CN 215773499U CN 202121182890 U CN202121182890 U CN 202121182890U CN 215773499 U CN215773499 U CN 215773499U
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- voice coil
- forward voice
- loudspeaker
- reverse
- circuit system
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Abstract
The utility model discloses a loudspeaker and an earphone. The horn includes: a bracket forming an accommodating cavity; the magnetic circuit system is accommodated in the accommodating cavity and is connected with the bracket; the forward voice coil is arranged around the magnetic circuit system and is electrically connected with the output of the audio; the reverse voice coil is connected with the forward voice coil and is arranged outside the magnetic circuit system in a surrounding manner, and the winding direction of the reverse voice coil is opposite to that of the forward voice coil; the vibrating diaphragm, the encapsulation is located on the support and is acceptd the chamber, is connected with forward voice coil loudspeaker voice coil or reverse voice coil loudspeaker voice coil. The loudspeaker of the utility model can reduce the induction noise generated by the forward voice coil in the magnetic field.
Description
Technical Field
The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker and an earphone.
Background
In the working process of the loudspeaker, a constantly changing current needs to be introduced, and induced electromotive force and induced current which constantly change along with the power supply current are inevitably generated in a voice coil of the loudspeaker. The induced current moves under the magnetic force generated by the magnet of the speaker, so that the speaker generates current noise which varies with the power supplied by the battery.
In the related art, this problem is solved by connecting a resistance attenuation in series to the horn or by using a metal shield. However, connecting a resistor in series with the speaker reduces the sound quality of the entire headset. In the method of shielding by metal, the metal sheet is usually thicker to produce a solution, so that the volume and weight of the whole earphone are increased.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a loudspeaker which can reduce induced current noise generated by a voice coil.
The utility model also provides an earphone with the loudspeaker.
A horn according to an embodiment of the first aspect of the present invention comprises: a bracket forming an accommodating cavity; the magnetic circuit system is accommodated in the accommodating cavity and is connected with the bracket; the forward voice coil is arranged outside the magnetic circuit system in a surrounding mode and can be introduced with current; the reverse voice coil is connected with the forward voice coil, can synchronously vibrate with the forward voice coil, is arranged outside the magnetic circuit system in a surrounding manner, and has the winding direction opposite to that of the forward voice coil; and the vibrating diaphragm is covered on the support and is packaged with the containing cavity, and is connected with the forward voice coil or the reverse voice coil.
The loudspeaker provided by the embodiment of the utility model at least has the following beneficial effects: because the forward voice coil and the reverse voice coil are wound outside the magnetic circuit system and the reverse voice coil can synchronously vibrate with the forward voice coil, when the forward voice coil is electrified, the forward voice coil drives the reverse voice coil to move in the magnetic field, so that the forward voice coil or the reverse voice coil drives the vibrating diaphragm to vibrate for electro-acoustic conversion, and because the winding directions of the forward voice coil and the reverse coil are opposite, induced electromotive force with opposite directions is generated by movement in the magnetic circuit system, induced current with opposite directions is formed by the forward voice coil and the reverse coil, the reverse coil counteracts the interference of the induced current of the forward voice coil, therefore, the reverse coil with the opposite winding direction is arranged to solve the current noise generated by the forward voice coil, the current noise is not required to be shielded in a mode of serially connecting resistors or metals on the loudspeaker, and the tone quality of the earphone is not reduced or the weight of the earphone is not increased.
According to some embodiments of the present invention, the forward voice coil is disposed on a side close to the diaphragm and bonded to the diaphragm.
According to some embodiments of the utility model, the forward voice coil and the reverse voice coil are bonded to each other.
According to some embodiments of the utility model, the number of winding turns of the forward voice coil is greater than the number of winding turns of the reverse voice coil.
According to some embodiments of the utility model, the reversing voice coil is connected end to form a closed coil.
A headset according to an embodiment of the second aspect of the utility model comprises the loudspeaker described above.
The earphone according to the embodiment of the utility model has at least the following beneficial effects: because the induced electromotive force that the forward voice coil loudspeaker voice coil in the loudspeaker produced is offset by the induced electromotive force that reverse voice coil loudspeaker voice coil produced to produce the induced noise when avoiding forward voice coil loudspeaker voice coil to drive the vibrating diaphragm vibration, make the earphone have better sound output result of use.
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 utility model is further described with reference to the following figures and examples, in which:
FIG. 1 is a perspective view of a horn according to an embodiment of the present invention;
FIG. 2 is a perspective view of the horn of FIG. 1 from another perspective;
FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 1;
fig. 4 is an exploded view of the horn of fig. 1.
Reference numerals:
a horn 100;
a support 110;
a forward voice coil 130;
a reverse voice coil 140;
a diaphragm 150;
a gasket 160.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 4, a speaker 100 according to an embodiment of the present invention includes a support 110, a magnetic circuit system 120, a forward voice coil 130, a backward voice coil 140, and a diaphragm 150.
Wherein, the bracket 110 forms a containing cavity 111; the magnetic circuit system 120 is accommodated in the accommodating cavity 111 and connected with the bracket 110; the forward voice coil 130 is arranged around the magnetic circuit system 120 and can be supplied with current; the reverse voice coil 140 is connected to the forward voice coil 130, can vibrate synchronously with the forward voice coil 130, and is arranged around the magnetic circuit system 120, and the winding direction of the reverse voice coil 140 is opposite to that of the forward voice coil 130; the diaphragm 150 is disposed on the support 110 and encloses the receiving cavity 111, and is connected to the forward voice coil 130 or the backward voice coil 140.
In the above-mentioned loudspeaker 100, because the forward voice coil 130 and the backward voice coil 140 are both wound outside the magnetic circuit system 120, and the backward voice coil 140 can vibrate synchronously with the forward voice coil 130, when the forward voice coil 130 is energized with current, the forward voice coil 130 drives the backward voice coil 140 to move in the magnetic field, so that the forward voice coil 130 or the backward voice coil 140 drives the diaphragm 150 to vibrate for performing electro-acoustic conversion, because the forward voice coil 130 and the backward coil 140 are wound in opposite directions, the forward voice coil 130 and the backward coil 140 move in the magnetic circuit system 120 to generate induced electromotive forces in opposite directions, the forward voice coil 130 and the backward coil 140 form induced currents in opposite directions, the backward coil 140 cancels the interference of the induced currents of the forward voice coil 130, thereby solving the current noise generated by the forward voice coil 130 by arranging the backward coil 140 with opposite winding directions, and performing the shielding of the current noise without connecting resistors or metals in series on the loudspeaker 100, the sound quality of the earphone is not reduced or the weight of the earphone is not increased.
Referring to fig. 3 and 4, in an embodiment of the present invention, when the loudspeaker 100 is in use, the forward voice coil 130 is connected to a power amplifier circuit, and the power amplifier circuit generates output impedance, which can share the induced electromotive force generated by the forward voice coil 130 with the backward voice coil 140, so that the number of winding turns of the forward voice coil 130 in this embodiment is greater than that of the backward voice coil 140, and the induced electromotive force generated by the forward voice coil 130 in the movement process is cancelled by the output impedance of the backward voice coil 140 and the power amplifier circuit.
In an embodiment of the present invention, the forward voice coil 130 and the backward voice coil 140 are disposed on the same side of the diaphragm 150 and are bonded to each other to form a whole, so that the whole speaker occupies less space after the forward voice coil 130, the backward voice coil 140 and other components are assembled into the speaker. In other embodiments, the forward voice coil 130 and the reverse voice coil 140 may be designed to be located at opposite sides of the diaphragm 150 under the condition that the forward voice coil 130 and the reverse voice coil 140 are ensured to vibrate synchronously.
Specifically, the forward voice coil 130 is disposed on a side close to the diaphragm 150, and the forward voice coil 130 is bonded to the diaphragm 150, so that the diaphragm 150 is driven to vibrate when vibration is generated in the magnetic circuit system 120 after the forward voice coil 130 is fed with current through the power amplifier circuit, and the diaphragm 150 converts the electrical signal into an acoustic signal. In other embodiments, since the forward voice coil 130 and the backward voice coil 140 are bonded, the backward voice coil 140 may also be bonded to the diaphragm 150, and the vibration of the forward voice coil 130 is transmitted to the backward voice coil 140 to drive the diaphragm 150 to vibrate.
It is understood that the voice coils 140 of the reverse direction in the present embodiment are connected end to form a closed coil in order to enhance the electro-acoustic conversion effect.
The magnetic circuit system 120 in the present embodiment includes a magnet 121 and a washer 122, where the magnet 121 is used for generating a magnetic field, and the washer 122 is used for conducting magnetism.
The speaker 100 further includes a gasket 160 to support the diaphragm 150.
In other embodiments, the present invention further provides an earphone including the speaker 100, wherein the induced electromotive force generated by the forward voice coil 130 in the speaker 100 is offset by the induced electromotive force generated by the backward voice coil 140, so as to prevent the forward voice coil 130 from generating induced noise when the diaphragm 150 is driven by the forward voice coil 130 to vibrate, and thus the earphone has a better sound output effect.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (6)
1. Loudspeaker, its characterized in that includes:
a bracket forming an accommodating cavity;
the magnetic circuit system is accommodated in the accommodating cavity and is connected with the bracket;
the forward voice coil is arranged outside the magnetic circuit system in a surrounding mode and can be introduced with current;
the reverse voice coil is connected with the forward voice coil, can synchronously vibrate with the forward voice coil, is arranged outside the magnetic circuit system in a surrounding manner, and has the winding direction opposite to that of the forward voice coil;
and the vibrating diaphragm is covered on the support and is packaged with the containing cavity, and is connected with the forward voice coil or the reverse voice coil.
2. The loudspeaker of claim 1, wherein the forward voice coil is disposed adjacent to one side of the diaphragm and connected to the diaphragm.
3. The horn of claim 1, wherein said forward voice coil and said reverse voice coil are bonded together.
4. The horn of claim 1, wherein the forward voice coil has a greater number of windings than the reverse voice coil.
5. The horn of claim 1, wherein the opposing voice coils are connected end to form a closed coil.
6. Headphones, characterized in that it comprises a loudspeaker according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182890.4U CN215773499U (en) | 2021-05-28 | 2021-05-28 | Loudspeaker and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182890.4U CN215773499U (en) | 2021-05-28 | 2021-05-28 | Loudspeaker and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215773499U true CN215773499U (en) | 2022-02-08 |
Family
ID=80098535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182890.4U Active CN215773499U (en) | 2021-05-28 | 2021-05-28 | Loudspeaker and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215773499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115226010A (en) * | 2022-09-07 | 2022-10-21 | 荣耀终端有限公司 | Anti-magnetic interference structure and electronic equipment |
-
2021
- 2021-05-28 CN CN202121182890.4U patent/CN215773499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115226010A (en) * | 2022-09-07 | 2022-10-21 | 荣耀终端有限公司 | Anti-magnetic interference structure and electronic equipment |
| CN115226010B (en) * | 2022-09-07 | 2023-02-17 | 荣耀终端有限公司 | Anti-magnetic interference structure and electronic equipment |
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