Loudspeaker and electronic equipment

Abstract

The utility model provides a loudspeaker and electronic equipment. The speaker includes a housing, a sound producing body, and a harmonic suppressor. A containing space is defined by the shell, and the sound production body is assembled in the containing space and divides the containing space into a front cavity and a rear cavity. The sound production main body comprises a first magnet, a voice coil and a first diaphragm which is connected with the voice coil and faces the front cavity. A magnetic field generated by the first magnet drives the voice coil to drive the first diaphragm to vibrate. The harmonic suppressor is assembled in the front cavity and comprises an electromagnet and a second vibrating diaphragm assembled on the electromagnet. When the electromagnet works, the magnetic field generated by the electromagnet interacts with the magnetic field generated by the first magnet, so that the second vibrating diaphragm generates vibration which counteracts distortion harmonic waves of the sound production main body under the driving of the electromagnet. And the calculated harmonic suppression signal is converted into an electric signal for driving the electromagnet, so that the electromagnet drives the second vibrating diaphragm to vibrate to eliminate the harmonic distortion problem caused by stacking of the single loudspeaker and the whole loudspeaker, and the sound quality of the loudspeaker can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to speakers and electronic devices. Background Art

[0002] During the design phase of a speaker, distortion issues can be addressed through testing to obtain distortion results. The internal structure of the speaker can then be fine-tuned and distortion tested until the design baseline for distortion is reached, thereby improving the sound quality of the speaker.

[0003] However, during the process of assembling the speaker into the electronic device, additional distortion will be introduced due to the stacking of the speaker units, resulting in the problem that the sound quality of the electronic device speaker still cannot meet expectations even after the unit distortion is debugged. Utility Model Content

[0004] The present disclosure provides a speaker and an electronic device to solve related technical problems.

[0005] A first aspect of the present disclosure provides a speaker, comprising:

[0006] A shell, enclosing a receiving space;

[0007] A sound-generating body is assembled in the accommodation space and divides the accommodation space into a front cavity and a rear cavity; the sound-generating body includes a first magnet, a voice coil, and a first diaphragm connected to the voice coil and disposed toward the front cavity; the magnetic field generated by the first magnet drives the voice coil and the first diaphragm to vibrate;

[0008] A harmonic suppressor is assembled in the front cavity; the harmonic suppressor includes an electromagnet and a second diaphragm assembled on the electromagnet; when the electromagnet is working, the magnetic field generated by the electromagnet interacts with the magnetic field generated by the first magnet, so that the second diaphragm generates vibrations that offset the distorted harmonics of the sound-emitting body under the drive of the electromagnet.

[0009] Optionally, the harmonic suppressor further includes a second diaphragm pressing plate; the second diaphragm includes a second dome and a second connecting diaphragm arranged at the edge of the second dome, and the second connecting diaphragm is fixed to the shell through the second diaphragm pressing plate.

[0010] Optionally, the speaker further includes a control mainboard; the control mainboard is conductively connected to the electromagnet to send an electrical signal corresponding to the harmonic suppression signal to the electromagnet.

[0011] Optionally, the shell includes a metal part, the metal part is provided with an etched circuit, and the etched circuit is conductively connected to the control mainboard and the electromagnet respectively.

[0012] Optionally, in the direction of action of the magnetic force, at least a portion of the second diaphragm is arranged in alignment with the first diaphragm.

[0013] Optionally, the shell includes a first side wall surrounding the front cavity, the first side wall is arranged opposite to the sound-emitting body, and the harmonic suppressor is assembled on the first side wall.

[0014] Optionally, the first side wall is provided with a mounting opening, the harmonic suppressor is assembled in the mounting opening, and the harmonic suppressor blocks the mounting opening.

[0015] Optionally, the sound-emitting body further includes a base and a first diaphragm pressing piece; the first diaphragm includes a first spherical top and a first connecting diaphragm arranged on the edge of the first spherical top, and the first connecting diaphragm is fixed to the base via the first diaphragm pressing piece.

[0016] Optionally, the first magnet includes an annular magnet and a central magnet arranged in a hollow area surrounded by the annular magnet; in the direction of magnetic force, the projection of the central magnet covers the electromagnet.

[0017] According to a second aspect of the present disclosure, an electronic device is provided, comprising any speaker described in the first aspect.

[0018] The technical solution provided by the present disclosure can achieve at least the following beneficial effects:

[0019] The presently disclosed speaker has a harmonic suppressor installed within its front cavity. The harmonic suppressor comprises an electromagnet and a second diaphragm assembled to the electromagnet. When the electromagnet is operating, the magnetic field generated by the electromagnet interacts with the magnetic field generated by the first magnet of the sound-producing body, causing the second diaphragm, driven by the electromagnet, to vibrate in a manner that offsets the distorted harmonics of the sound-producing body. This structural arrangement converts the calculated harmonic suppression signal into an electrical signal that drives the electromagnet. This, in turn, drives the second diaphragm to vibrate, eliminating harmonic distortion generated by the speaker unit and the overall stack, thereby improving the speaker's sound quality.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0022] Figure 1 is a schematic diagram of a partial cross-sectional structure of an electronic device in an exemplary embodiment of the present disclosure;

[0023] Figure 2 is a schematic cross-sectional structural diagram of a harmonic suppressor in an exemplary embodiment of the present disclosure;

[0024] Figure 3 It is a schematic top view of the structure of a harmonic suppressor in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of this specification, as detailed in the appended claims.

[0026] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. Unless otherwise defined, technical or scientific terms used in this specification should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and similar terms used in this specification and the claims do not denote any order, quantity, or importance, but are simply used to distinguish one component from another. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather indicate the presence of one. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are used for convenience only and are not intended to limit the scope of the disclosure to a specific location or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0027] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. As used in this specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0028] During the speaker design phase, distortion issues can be addressed through testing to obtain distortion results. Fine-tuning the speaker's internal structure and performing distortion testing can then be performed until the distortion baseline is achieved, thereby improving the speaker's sound quality. However, during the speaker assembly process within an electronic device, additional distortion can be introduced due to the stacking of speaker components. This can result in the speaker still not meeting expectations even after distortion adjustments have been made.

[0029] The present disclosure provides a speaker. Figure 1 is a schematic diagram of a partial cross-sectional structure of an electronic device in an exemplary embodiment of the present disclosure, Figure 2 is a schematic cross-sectional structural diagram of a harmonic suppressor in an exemplary embodiment of the present disclosure. Figure 3 FIG. 1 is a schematic diagram of a top view of a harmonic suppressor in an exemplary embodiment of the present disclosure. Figure 1-Figure 3 As shown, Figure 1 The dashed arrow in the middle can represent the direction of magnetic force, and the hollow arrow can represent the direction of sound propagation in the front cavity. The loudspeaker 1 includes a shell 11, a sound-emitting body 12, and a harmonic suppressor 13. The shell 11 encloses a storage space 114, and the sound-emitting body 12 is assembled in the storage space 114, and the storage space 114 is divided into a front cavity 111 and a rear cavity 112. The sound-emitting body 12 includes a first magnet 121, a voice coil 123, and a first diaphragm 122 connected to the voice coil 123 and arranged toward the front cavity 111. The magnetic field generated by the first magnet 121 drives the voice coil 123 to drive the first diaphragm 122 to vibrate. The harmonic suppressor 13 is assembled in the front cavity 111, and the harmonic suppressor 13 includes an electromagnet 131 and a second diaphragm 132 assembled with the electromagnet 131. When the electromagnet 131 is working, the magnetic field generated by the electromagnet 131 interacts with the magnetic field generated by the first magnet 121 , so that the second diaphragm 132 generates vibrations to offset the distorted harmonics of the sound-generating body 12 under the drive of the electromagnet 131 .

[0030] Since the harmonic suppressor 13 is provided within the front cavity 111 of the loudspeaker 1, comprising an electromagnet 131 and a second diaphragm 132 assembled therewith, when the electromagnet 131 is operating, the magnetic field generated by the electromagnet 131 interacts with the magnetic field generated by the first magnet 121 of the sound-generating body 12, causing the second diaphragm 132, driven by the electromagnet 131, to vibrate in a manner that cancels out the distorted harmonics of the sound-generating body 12. The above-described structural arrangement can convert the calculated harmonic suppression signal into an electrical signal that drives the electromagnet 131, which in turn drives the second diaphragm 132 to vibrate, thereby eliminating harmonic distortion generated by the individual loudspeaker units 1 and the overall stack. This allows sound to propagate through the front cavity 111 and out of the front cavity outlet 1111 to the outside of the loudspeaker 1 or the electronic device, thereby improving the sound quality of the loudspeaker 1.

[0031] In addition, since the harmonic suppressor 13 utilizes the magnetism of the original magnet in the loudspeaker 1 to generate reverse harmonic sound waves with the electromagnet 131 structure, no additional stacking space is required. Harmonics generally have a higher frequency and the amplitude of the harmonics is generally only 20% of the fundamental wave. Therefore, the resonance suppressor is small in size and has a smaller amplitude. The original magnetism of the loudspeaker 1 is sufficient to generate the corresponding harmonic sound signal.

[0032] In some embodiments, the harmonic suppressor 13 further includes a second diaphragm pressing plate 1323. The second diaphragm 132 includes a second dome 1321 and a second connecting diaphragm 1322 disposed at the edge of the second dome 1321. The second connecting diaphragm 1322 is secured to the housing 11 via the second diaphragm pressing plate 1323. The second diaphragm 132 is divided into the second dome 1321 and the second connecting diaphragm 1322 connected to the edge of the second dome 1321. The second diaphragm 132 is secured by pressing the second diaphragm pressing plate 1323 against one end of the second connecting diaphragm 1322. This secures the connection and ensures a seal without affecting the vibration of the second diaphragm 132.

[0033] In some embodiments, the speaker 1 may further include a control board (not labeled) electrically connected to the electromagnet 131 to transmit an electrical signal corresponding to the harmonic suppression signal to the electromagnet 131. During operation, the distortion generated by the speaker 1 is calculated using a distortion algorithm. The harmonic components of the distortion are analyzed in real time, and the electrical signals of the harmonic components are phase-delayed by 180 degrees. The phase-converted harmonic suppression signal is then converted into an electrical signal and input into the harmonic suppressor 13 to drive the second diaphragm 132 to vibrate. The electromagnet 131 of the harmonic suppressor 13 primarily generates magnetism by magnetizing the core 1311 of the electromagnet 131 when power is applied to its coil 1312. When an external magnet attracts or repels the magnetized electromagnet 131 of the harmonic suppressor 13, the electromagnet 131 drives the second diaphragm 132 to vibrate, generating sound. The vibration of the second diaphragm 132 of the harmonic suppressor 13 can generate sound waves with opposite phases, thereby canceling out the harmonics and achieving the effect of reducing the distortion of the entire device.

[0034] The housing 11 may include a metal portion having etched circuits therein, each electrically connected to the control board and the electromagnet 131. The etched circuits provided on the metal portion of the housing 11 can simplify the connection between the control board and the electromagnet 131, thereby preventing the impact of complex circuits on the internal structure and sound output of the speaker 1. For example, LDS (Laser Direct Structuring) metal circuit etching can be performed on the metal portion, and then, through flying leads, the electrical signal is delivered to the coil 1312 of the electromagnet 131 of the harmonic suppressor 13.

[0035] In some embodiments, in the direction of magnetic force, at least a portion of the second diaphragm 132 is aligned with the first diaphragm 122 so that the vibration generated by the second diaphragm 132 can effectively offset the harmonics generated by the first diaphragm 122, thereby improving the offset effect.

[0036] In other embodiments, in the direction of the magnetic force, part of the second diaphragm 132 may also be located outside the projection area of the first diaphragm 122 to enhance the flexibility of the location of the harmonic suppressor 13 .

[0037] In the above embodiment, the harmonic suppressor 13 can be positioned anywhere within the front cavity 111, so long as it can effectively cancel the harmonics generated by the sound-generating body 12. For example, the housing 11 includes a first side wall 113 that encloses the front cavity 111. The first side wall 113 is positioned opposite the sound-generating body 12, and the harmonic suppressor 13 is assembled to the first side wall 113. Mounting the harmonic suppressor 13 on the first side wall 113 not only improves installation convenience and reliability, but also enhances harmonic cancellation efficiency by leveraging its position opposite the sound-generating body 12.

[0038] The first side wall 113 may be provided with a mounting opening 1131, and the harmonic suppressor 13 may be assembled in the mounting opening 1131, and the harmonic suppressor 13 may block the mounting opening 1131. Assembling the harmonic suppressor 13 in the mounting opening 1131 can prevent the harmonic suppressor 13 from affecting the structure of the front cavity 111. The electromagnet 131 of the harmonic suppressor 13 may extend from the mounting opening 1131 to the outside of the front cavity 111, providing space for the coil 1312 of the electromagnet 131 to move.

[0039] In some embodiments, the sound-emitting body 12 further includes a base 124 and a first diaphragm pressing piece 125. The first diaphragm 122 includes a first dome 1221 and a first connecting diaphragm 1222 disposed at the edge of the first dome 1221. The first connecting diaphragm 1222 is secured to the base 124 via the first diaphragm pressing piece 125. The first diaphragm 122 is divided into the first dome 1221 and the first connecting diaphragm 1222 connected to the edge of the first dome 1221. The first diaphragm pressing piece 125 is pressed against one end of the first connecting diaphragm 1222 to secure the first diaphragm 122. This secures the connection and does not affect the vibration of the first diaphragm 122.

[0040] In some embodiments, the first magnet 121 includes an annular magnet 1211 and a central magnet 1212 disposed within the hollow region enclosed by the annular magnet 1211. In the direction of magnetic force, the projection of the central magnet 1212 overlaps the electromagnet 131. Harmonics can be canceled solely through the interaction between the central magnet 1212 of the sound-producing body 12 of the loudspeaker 1 and the electromagnet 131 of the harmonic suppressor 13. This also prevents magnetic field interference from the annular magnet 1211 on the electromagnet 131 of the harmonic suppressor 13, thereby improving the accuracy and effectiveness of harmonic cancellation.

[0041] The present disclosure further provides an electronic device, which includes the above-mentioned speaker 1.

[0042] Because a harmonic suppressor 13 is provided within the front cavity 111 of the loudspeaker 1, comprising an electromagnet 131 and a second diaphragm 132 assembled therewith, when the electromagnet 131 is operating, the magnetic field generated by the electromagnet 131 interacts with the magnetic field generated by the first magnet 121 of the sound-generating body 12, causing the second diaphragm 132, driven by the electromagnet 131, to vibrate in a manner that cancels out the distorted harmonics of the sound-generating body 12. The above-described structural arrangement can convert the calculated harmonic suppression signal into an electrical signal that drives the electromagnet 131, which in turn drives the second diaphragm 132 to vibrate, thereby eliminating harmonic distortion generated by the individual loudspeaker units 1 and the overall stack. This allows sound to propagate through the front cavity 111 and out of the front cavity outlet 1111 to the outside of the loudspeaker 1 or an electronic device, thereby improving the sound quality of the loudspeaker 1.

[0043] It should be noted that the above-mentioned electronic devices can be mobile phones, tablet computers, vehicle-mounted terminals, medical terminals, wearable devices, etc., and this disclosure does not limit this.

[0044] The above description is merely a preferred embodiment of the present disclosure and does not constitute any form of limitation to the present disclosure. Although the present disclosure has been disclosed as a preferred embodiment as above, it is not intended to limit the present disclosure. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present disclosure. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure are still within the scope of the technical solution of the present disclosure.

Claims

1. A loudspeaker, characterized in that: include: A shell, enclosing a receiving space; A sound-generating body is assembled in the accommodation space and divides the accommodation space into a front cavity and a rear cavity; the sound-generating body includes a first magnet, a voice coil, and a first diaphragm connected to the voice coil and disposed toward the front cavity; the magnetic field generated by the first magnet drives the voice coil and the first diaphragm to vibrate; A harmonic suppressor is assembled in the front cavity; the harmonic suppressor includes an electromagnet and a second diaphragm assembled on the electromagnet; when the electromagnet is working, the magnetic field generated by the electromagnet interacts with the magnetic field generated by the first magnet, so that the second diaphragm generates vibrations that offset the distorted harmonics of the sound-emitting body under the drive of the electromagnet.

2. The loudspeaker according to claim 1, wherein The harmonic suppressor further includes a second diaphragm pressing plate; the second diaphragm includes a second dome and a second connecting diaphragm arranged at the edge of the second dome, and the second connecting diaphragm is fixed to the shell through the second diaphragm pressing plate.

3. The loudspeaker according to claim 1, wherein It also includes a control mainboard; the control mainboard is conductively connected to the electromagnet to send an electrical signal corresponding to the harmonic suppression signal to the electromagnet.

4. The loudspeaker according to claim 3, characterized in that The shell includes a metal part, and the metal part is provided with an etching circuit. The etching circuit is conductively connected to the control mainboard and the electromagnet respectively.

5. The loudspeaker according to claim 1, wherein In the direction of magnetic force action, at least a portion of the second diaphragm is arranged in alignment with the first diaphragm.

6. The loudspeaker according to claim 1, wherein The shell includes a first side wall surrounding the front cavity, the first side wall is arranged opposite to the sound-generating body, and the harmonic suppressor is assembled on the first side wall.

7. The loudspeaker according to claim 6, characterized in that The first side wall is provided with a mounting opening, the harmonic suppressor is assembled in the mounting opening, and the harmonic suppressor blocks the mounting opening.

8. The loudspeaker according to claim 1, wherein The sound-emitting body further includes a base and a first diaphragm pressing piece; the first diaphragm includes a first dome and a first connecting diaphragm arranged at the edge of the first dome, and the first connecting diaphragm is fixed to the base via the first diaphragm pressing piece.

9. The loudspeaker according to claim 1, wherein The first magnet includes an annular magnet and a central magnet disposed in a hollow area surrounded by the annular magnet; in the direction of magnetic force, the projection of the central magnet covers the electromagnet.

10. An electronic device, characterized in that: Comprising the loudspeaker according to any one of claims 1 to 9.

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