CN114257932A - Speaker and electronic apparatus - Google Patents
Speaker and electronic apparatus Download PDFInfo
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- CN114257932A CN114257932A CN202111573608.XA CN202111573608A CN114257932A CN 114257932 A CN114257932 A CN 114257932A CN 202111573608 A CN202111573608 A CN 202111573608A CN 114257932 A CN114257932 A CN 114257932A
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-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a loudspeaker and electronic equipment, the loudspeaker includes the body, vibration system, support and magnetic circuit system, the vibration system is set up in the installation space of the body, the vibration system includes shaking membrane and voice coil, the voice coil has first wire section and second wire section set up relatively at least, the current direction in first wire section and second wire section is opposite; the support is a magnetic conductive material piece, the support is connected with the vibrating diaphragm, the support is provided with a side wall facing one side of the voice coil, and the side wall is at least partially overlapped with the projection of the voice coil along the horizontal direction; magnetic circuit establishes in installation space to relative and interval setting with the voice coil loudspeaker voice coil, magnetic circuit includes first magnetic circuit part and the second magnetic circuit part of locating the relative both sides of voice coil loudspeaker voice coil respectively, and magnetic line of force of magnetic circuit at least part is along the horizontal direction vertical pass first wire section and second wire section, and the magnetic line of force direction that passes first wire section and second wire section is opposite. The invention aims to provide a loudspeaker which can effectively improve the tone quality and improve the treble effect.
Description
Technical Field
The present invention relates to the field of speaker technologies, and in particular, to a speaker and an electronic device using the same.
Background
A speaker, also called a horn, is widely used as an electroacoustic transducer in electronic devices such as speakers, earphones, mobile phones, and the like. Current loudspeakers can be classified in terms of their operating principle into moving-coil loudspeakers, moving-iron loudspeakers and flat-diaphragm loudspeakers. In the related art, in order to seek higher sound quality for electronic devices such as earphones, a multi-driving unit, that is, a tweeter and a woofer are often used in combination. However, the existing tweeter generally has the problem of poor high-pitched effect, thereby affecting the tone quality of the electronic equipment and affecting the use effect of users.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker and electronic equipment, and aims to provide a loudspeaker which effectively improves the tone quality and improves the high-pitch effect.
To achieve the above object, the present invention provides a speaker, including:
a housing defining an installation space therein;
the vibration system is arranged in the installation space and comprises a vibrating diaphragm and a voice coil arranged on the vibrating diaphragm, the voice coil is arranged along the surface of the vibrating diaphragm, the central axis of the voice coil is vertical to the vibrating diaphragm, the voice coil at least comprises a first wire section and a second wire section which are oppositely arranged, and the current directions in the first wire section and the second wire section are opposite;
the support is a magnetic conductive material piece, the support is connected with the vibrating diaphragm so as to suspend the vibration system in the installation space, the support is provided with a side wall facing one side of the voice coil, and the side wall and the voice coil are at least partially overlapped along the projection of the horizontal direction; and
magnetic circuit, magnetic circuit establishes in the installation space, magnetic circuit with the voice coil loudspeaker voice coil is relative and the interval sets up, magnetic circuit includes first magnetic circuit part and second magnetic circuit part, second magnetic circuit part with first magnetic circuit part is located respectively the relative both sides of voice coil loudspeaker voice coil, second magnetic circuit part includes at least one second magnetic part, first magnetic circuit part includes at least three first magnetic part, magnetic line of force of magnetic circuit part is at least partly along the horizontal direction perpendicular pass first wire section with the second wire section, and pass first wire section with the magnetic line of force direction of second wire section is opposite.
In one embodiment, the first magnetic members are magnetized in a vertical direction, and the magnetizing directions of two adjacent first magnetic members are opposite.
In an embodiment, the number of the first magnetic members is three, the number of the second magnetic members is one, and the magnetizing direction of the second magnetic members is opposite to the magnetizing direction of the first magnetic member located at the middle position.
In an embodiment, the number of the second magnetic members is the same as that of the first magnetic members, and the magnetizing directions of the first magnetic members and the second magnetic members which are vertically corresponding to each other are opposite.
In an embodiment, the first magnetic circuit portion comprises a set of magnetic elements;
the magnetic part group comprises three first magnetic parts which are arranged along the horizontal direction, the first magnetic part positioned in the middle is magnetized downwards along the vertical direction, and the first magnetic parts positioned at the two ends are respectively magnetized along the horizontal direction and the direction far away from the first magnetic part in the middle; or the first magnetic part in the middle is magnetized upwards along the vertical direction, and the first magnetic parts at the two ends are magnetized along the horizontal direction and towards the direction close to the first magnetic part in the middle respectively;
or the magnetic part group comprises five first magnetic parts which are arranged along the horizontal direction, the first magnetic part positioned in the middle position is magnetized downwards along the vertical direction, the two first magnetic parts positioned at the two ends are magnetized upwards along the vertical direction, and the two first magnetic parts arranged at the two sides of the first magnetic part positioned in the middle position are respectively magnetized along the horizontal direction and the direction which is far away from the first magnetic part at the middle position.
In one embodiment, the second magnetic member is one, and the magnetizing direction of the second magnetic member is opposite to the magnetizing direction of the first magnetic member located at the middle position.
In an embodiment, the first magnetic circuit portion further includes third magnetic members, the third magnetic members are disposed at two ends of the magnetic member group, and an extending direction of the third magnetic members is perpendicular to an extending direction of the first magnetic member.
In an embodiment, the number of the second magnetic members is the same as that of the first magnetic members, and the magnetizing directions of the first magnetic members and the second magnetic members which are vertically corresponding are symmetrically arranged with respect to a plane where the voice coil is located.
In one embodiment, a connecting piece is arranged between two adjacent first magnetic pieces to define a mounting gap between the two first magnetic pieces;
or, two adjacent first magnetic pieces are arranged in an abutting mode.
In an embodiment, the support is formed as a hollow frame structure, the top of the support is connected to the inner wall of the casing, the second magnetic circuit portion is located in the support, an avoiding opening is formed in the bottom of the support, the diaphragm is connected to the bottom of the support, and the voice coil is located in the avoiding opening.
In one embodiment, the support is provided with a horizontal connecting portion extending horizontally, a side of the horizontal connecting portion facing the voice coil is the side wall, and a bottom of the horizontal connecting portion abuts against the first magnetic circuit portion.
In one embodiment, the diaphragm is a single-layer metal material;
or, the diaphragm is formed into a composite layer structure, and at least the surface connected with the voice coil is made of metal material.
In one embodiment, the voice coil is formed in a square shape.
The invention also provides electronic equipment comprising the loudspeaker.
According to the technical scheme, the vibration system is suspended in the installation space of the shell through the support of the magnetic conduction material piece, so that the magnetic circuit system installed in the installation space is opposite to and spaced from the voice coil of the vibration system, a strong magnetic field is generated by at least three first magnetic pieces of the first magnetic circuit part in the magnetic circuit system, the vibration diaphragm and the voice coil are located in a strong magnetic field intensity, the magnetic induction lines at the vibration diaphragm are uniformly distributed, the change of the magnetic field intensity has good linearity, the tone quality of audio output by the speaker can be effectively improved, and the high-pitch effect is improved; meanwhile, a first magnetic circuit part and a second magnetic circuit part are respectively arranged on two opposite sides of the vibration system, so that magnetic fields with stronger magnetic field intensity are formed on two opposite sides of the vibrating diaphragm, the intensity of the magnetic field where the vibrating diaphragm is located is further enhanced, the sensitivity of controlling the vibration of the vibrating diaphragm is further improved, and the tone quality of the audio output by the loudspeaker is improved; further utilize the support of magnetic conduction material spare to realize gathering the magnetism effect to make magnetic line of force of magnetic circuit at least part pass the first wire section and the second wire section of voice coil loudspeaker voice coil perpendicularly along the horizontal direction, and make the magnetic line of force direction that passes first wire section and second wire section opposite, thereby effectively improve the tone quality and the high pitch effect of speaker.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of a speaker according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a speaker according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the bracket coupled to the vibration system in accordance with an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a bracket coupled to a vibration system in accordance with another embodiment of the present invention;
FIG. 5 is a cross-sectional view of the voice coil and the magnetic circuit system according to the first embodiment of the present invention;
FIG. 6 is a cross-sectional view of a voice coil and a magnetic circuit system according to a second embodiment of the present invention;
FIG. 7 is a cross-sectional view of a voice coil and a magnetic circuit system according to a third embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a voice coil and a magnetic circuit system according to a fourth embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a voice coil and a magnetic circuit system according to a fifth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a magnetic circuit system according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a first magnetic circuit portion according to an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view of a first magnetic circuit portion in another embodiment of the present invention;
FIG. 13 is a schematic view of a voice coil according to an embodiment of the present invention;
fig. 14 is a schematic diagram of magnetic field simulation of a magnetic circuit system according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
31 | Dodging port |
| 1 | |
32 | |
| 11 | |
33 | |
| 12 | Upper casing | 4 | |
| 13 | |
41 | First |
| 2 | |
411 | Magnetic part set |
| 21 | |
412 | First |
| 22 | |
413 | Third |
| 221 | |
414 | Connecting |
| 222 | |
415 | Fitting |
| 23 | Reinforcing |
42 | Second |
| 3 | |
421 | Second magnetic part |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
A speaker, also called a horn, is widely used as an electroacoustic transducer in electronic devices such as speakers, earphones, mobile phones, and the like. Current loudspeakers can be classified in terms of their operating principle into moving-coil loudspeakers, moving-iron loudspeakers and flat-diaphragm loudspeakers. The moving-coil loudspeaker is simple in structure, mature in process and good in performance, but has the defects that the vibration quality is large, the transient characteristic is poor, the mass distribution, the membrane compliance and the asymmetric distribution of BL electromagnetic driving force can generate swing vibration of different degrees, the high-frequency response can generate serious peaks and valleys due to the fact that the segmentation vibration of different frequencies is generated, the product distortion is high due to the nonlinear problem of the moving-coil loudspeaker, and the acoustic performance is seriously deteriorated. The moving-iron type loudspeaker has the advantages of good transient response and high efficiency, but has the disadvantages of large distortion and narrow frequency response, and is commonly used in hearing aids.
In order to obtain better sound quality, a planar diaphragm technology has emerged. The planar diaphragm loudspeaker applying the planar diaphragm technology integrates a planar voice coil on the surface of the diaphragm, and the diaphragm is placed in the magnetic field environment generated by the magnetic assembly. When alternating current signals are conducted in the coil, the coil is stressed to drive the vibrating diaphragm to do reciprocating motion, and the change of air density is caused to generate sound. However, the planar diaphragm loudspeaker has the disadvantages that the magnetic field generated by the magnetic component of the planar diaphragm loudspeaker is unreasonable, so that the magnetic field intensity at the coil is weak, the sensitivity of the planar diaphragm loudspeaker is insufficient, or the magnetic induction lines are distributed unevenly and the linearity is poor; or no air circulation channel is arranged inside the magnetic assembly, so that the magnetic assembly has larger obstruction to air flow. The problems of serious audio distortion, poor tone quality and high-pitch effect and the like of the output audio of the plane diaphragm loudspeaker are caused.
In the related art, in order to seek higher sound quality for electronic devices such as earphones, a multi-driving unit, that is, a tweeter and a woofer are often used in combination. However, the existing tweeter generally has the problem of poor high-pitched effect, thereby affecting the tone quality of the electronic equipment and affecting the use effect of users.
Based on the above-described concept and problems, the present invention proposes a speaker 100. It is understood that the speaker 100 can be applied to an electronic device such as a speaker, an earphone, a mobile phone, etc., and is not limited thereto.
Referring to fig. 1 to 13, in an embodiment of the present invention, the speaker 100 includes a housing 1, a vibration system 2, a bracket 3 and a magnetic circuit system 4, wherein the housing 1 defines an installation space 11, the vibration system 2 is disposed in the installation space 11, the vibration system 2 includes a diaphragm 21 and a voice coil 22 disposed on the diaphragm 21, the voice coil 22 is disposed along a surface of the diaphragm 21, a central axis of the voice coil 22 is perpendicular to the diaphragm 21, the voice coil 22 at least includes a first lead segment 221 and a second lead segment 222 disposed opposite to each other, current directions in the first lead segment 221 and the second lead segment 222 are opposite to each other, the bracket 3 is a magnetically conductive material, the bracket 3 is connected to the diaphragm 21 to suspend the vibration system 2 in the installation space 11, the bracket 3 has a sidewall 33 facing a side of the voice coil, a projection of the sidewall 33 in a horizontal direction at least partially overlaps the voice coil 22, the magnetic circuit system 4 is disposed in the installation space 11, magnetic circuit 4 is opposite to voice coil 22 and is set up at interval, magnetic circuit 4 includes first magnetic circuit part 41 and second magnetic circuit part 42, second magnetic circuit part 42 and first magnetic circuit part 41 are located the relative both sides of voice coil 22 respectively, second magnetic circuit part 42 includes at least one second magnetic part 421, first magnetic circuit part 41 includes at least three first magnetic part 412, the magnetic line of force of magnetic circuit 4 at least part passes first wire section 221 and second wire section 222 perpendicularly along the horizontal direction, and the magnetic line of force direction that passes first wire section 221 and second wire section 222 is opposite.
It can be understood that the housing 1 is used for mounting, fixing, supporting and protecting the components such as the vibration system 2, the bracket 3 and the magnetic circuit system 4, that is, the housing 1 provides a mounting base for the components such as the vibration system 2, the bracket 3 and the magnetic circuit system 4. It is understood that the housing 1 may be a mounting case, a housing, or a box structure having the mounting space 11, and is not limited thereto.
In the present embodiment, the housing 1 may be configured in a circular or square structure, and the like, which is not limited herein. The housing 1 includes an upper case 12 and a lower case 13 coupled to the upper case 12 such that the upper case 12 and the lower case 13 enclose a mounting space 11. It will be appreciated that the lower shell 13 may be provided in a U-shaped configuration, which may include a flat bottom wall and side walls provided to the bottom wall. The upper shell 12 may also be provided in a U-shaped configuration that may include a flat top wall and side walls that each include the top wall. The upper case 12 and the lower case 13 are thus cross-engaged to define an installation space 11 for installing the vibration system 2, the bracket 3, the magnetic circuit system 4, and the like. Of course, in other embodiments, the upper shell 12 may also be a flat plate structure, which is not limited herein.
It is understood that the vibration system 2 includes a diaphragm 21 and a voice coil 22, the voice coil 22 is disposed on the diaphragm 21, and the diaphragm 21 may be a flat diaphragm 21, such that the voice coil 22 is disposed on the flat surface of the diaphragm 21. In this embodiment, the voice coil 22 may be a flexible circuit board attached to the diaphragm 21. The voice coil 22 may be formed by a plurality of coils disposed on the same surface of the diaphragm 21, and is not limited herein.
Alternatively, the diaphragm 21 may be made of a metal material or a non-metal material, such as paper, PET (polyester film), PEEK (polyether ether ketone), PAR (polyarylate), PI (polyimide), PEN, woven glass fiber, or aluminum, and the like, which is not limited herein. Further, the diaphragm 21 may be a metal planar diaphragm.
In this embodiment, by providing the bracket 3 and setting the bracket 3 as a magnetic conductive material, the vibration system 2 is suspended in the installation space 11 by using the bracket 3, and on one hand, stability is provided for installation of the vibration system 2 by using the bracket 3, so as to improve the sensitivity of the diaphragm 21; on the other hand, the side wall 33 of the side of the bracket 3 facing the voice coil is at least partially overlapped with the projection of the outer wall of the voice coil 22 along the horizontal direction, so that the bracket 3 of the magnetic conductive material is utilized to realize the magnetic gathering effect, and the magnetic force lines generated by the magnetic circuit system 4 vertically pass through the first wire section 221 and the second wire section 222 of the voice coil 22 along the horizontal direction, and the directions of the magnetic force lines passing through the first wire section 221 and the second wire section 222 are opposite, so that the magnetic induction lines at the position of the diaphragm 21 are uniformly distributed, and the magnetic field change in the vibration direction of the diaphragm 21 has good linearity, thereby effectively improving the tone quality of the audio output by the loudspeaker 100, improving the treble effect, and also relieving the distortion condition of the audio output by the loudspeaker 100 to a certain extent.
In the present embodiment, the magnetic circuit system 4 includes a first magnetic circuit portion 41 and a second magnetic circuit portion 42 respectively disposed on two opposite sides of the voice coil 22, the second magnetic circuit portion 42 includes at least one second magnetic member 421, the first magnetic circuit portion 41 includes at least three first magnetic members 412, so that the second magnetic member 421 and the at least three first magnetic members 412 of the first magnetic circuit portion 41 form a stronger magnetic field on two opposite sides of the diaphragm 21 and the voice coil 22, so that the diaphragm 21 and the voice coil 22 of the vibration system 2 are in a stronger magnetic field strength, the distribution of the magnetic induction lines at the diaphragm 21 is uniform, the variation of the magnetic field strength has good linearity, the sound quality of the audio output by the speaker 100 can be effectively improved, and the treble effect is improved.
It is understood that the first magnetic circuit portion 41 includes a plurality of first magnetic members 412, and the plurality of first magnetic members 412 may also form a halbach magnetic member array. The second magnetic circuit portion 42 includes one or more second magnetic members 421, and the plurality of second magnetic members 421 may also form a halbach magnetic member array. Of course, in other embodiments, the plurality of first magnetic members 412 of the first magnetic circuit portion 41 may also form a magnetic field with a higher magnetic field strength, and the plurality of second magnetic members 421 of the second magnetic circuit portion 42 may also form a magnetic field with a higher magnetic field strength, which is not limited herein.
In some optional embodiments of the present invention, by disposing the magnetic circuit system 4 in the installation space 11, the first magnetic circuit portion 41 and the second magnetic circuit portion 42 of the magnetic circuit system 4 are respectively disposed on two opposite sides of the voice coil 22, and are disposed opposite to and spaced apart from the voice coil 22, by adjusting the magnetizing direction of the first magnetic member 412 in the first magnetic circuit portion 41 and the magnetizing direction of the second magnetic member 421 in the second magnetic circuit portion 42, the first magnetic member 412 in the first magnetic circuit portion 41 forms a halbach magnetic member array, that is, the magnetic and the arrangement rule of the first magnetic member 412 satisfy the halbach magnetic member array (halbacray), and the second magnetic member 421 in the second magnetic circuit portion 42 forms a halbach magnetic member array, that is, the magnetic and the arrangement rule of the second magnetic member 421 satisfy the halbach magnetic member array (halbach magnetic).
It can be understood that the halbach magnetic element array can generate a stronger magnetic field, and the magnetic field generated by the halbach magnetic element array drives the vibrating diaphragm 21 to vibrate and sound, so that the vibrating diaphragm 21 has a stronger magnetic field, which is beneficial to improving the sensitivity of controlling the vibration of the vibrating diaphragm 21; moreover, the halbach magnetic element array allows the magnetic induction lines at the position of the diaphragm 21 to be uniformly distributed and the magnetic field change in the vibration direction of the diaphragm 21 to have good linearity, so that the tone quality of the audio output by the loudspeaker 100 can be effectively improved, the high-pitch effect is improved, and the distortion condition of the audio output by the loudspeaker 100 is relieved to a certain extent. The vibration of the diaphragm 21 is specifically that the edge of the diaphragm 21 is fixed, and the surface of the diaphragm 21 vibrates in a direction perpendicular to the surface of the diaphragm 21.
In the present embodiment, the magnetic circuit system 4 is disposed opposite to the diaphragm 21 and the voice coil 22, that is, the diaphragm 21 is located in the magnetic field formed by the plurality of first magnetic members 412 and the plurality of second magnetic members 421, so as to generate a magnetic force acting on the voice coil 22 when a current is applied to the voice coil 22, and further drive the diaphragm 21 to vibrate back and forth in the direction of the magnetic force to generate sound. It can be understood that, when a current is applied to the voice coil 22, the directions of the currents flowing in the first wire segment 221 and the second wire segment 222, which are oppositely disposed in the voice coil 22, are opposite.
In the present embodiment, the first magnetic member 412 of the magnetic circuit system 4 may be an electromagnet or a permanent magnet, but its magnetism remains unchanged. The second magnetic member 421 may be an electromagnet or a permanent magnet, but its magnetism remains unchanged. Any adjacent first magnetic members 412 may be disposed at intervals, abutted, connected by a connecting member, or the like, and are not limited herein. Any adjacent second magnetic members 421 can be disposed at intervals, abutted, connected by a connecting member, or the like, and are not limited herein.
The loudspeaker 100 of the invention suspends the vibration system 2 in the installation space 11 of the shell 1 by utilizing the bracket 3 of the magnetic conduction material piece, so that the magnetic circuit system 4 installed in the installation space 11 is opposite to and arranged at intervals with the voice coil 22 of the vibration system 2, and at least three first magnetic pieces 412 of the magnetic circuit system 4 are utilized to form a magnetic piece array and generate a magnetic field with stronger magnetic field strength, so that the vibrating diaphragm 21 and the voice coil 22 are positioned in stronger magnetic field strength, the magnetic induction lines at the vibrating diaphragm 21 are uniformly distributed, the change of the magnetic field strength has good linearity, the tone quality of the audio output by the loudspeaker 100 can be effectively improved, the high-pitch effect is improved, and the distortion condition of the audio output by the loudspeaker 100 is relieved to a certain extent; meanwhile, the first magnetic circuit part 41 and the second magnetic circuit part 42 are respectively arranged on the two opposite sides of the vibration system 2, so that magnetic fields with stronger magnetic field intensity are formed on the two opposite sides of the vibrating diaphragm 21, the intensity of the magnetic field where the vibrating diaphragm 21 is located is further enhanced, the sensitivity of controlling the vibration of the vibrating diaphragm 21 is further improved, and the tone quality of the audio output by the loudspeaker 100 is improved; as shown in fig. 14, the magnetic concentration effect is further achieved by using the bracket 3 of the magnetic conductive material, so that the magnetic lines of force of the magnetic circuit 4 at least partially vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 in the horizontal direction, and the directions of the magnetic lines of force passing through the first wire segment 221 and the second wire segment 222 are opposite, thereby effectively improving the sound quality and the treble effect of the loudspeaker 100.
In one embodiment, the first magnetic members 412 are magnetized in a vertical direction, and the magnetizing directions of two adjacent first magnetic members 412 are opposite.
It can be understood that, as shown in fig. 5 and 7, when one first magnetic member 412 of at least three first magnetic members 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 is magnetized in the vertical direction, the magnetizing directions of two adjacent first magnetic members 412 are opposite, that is, the two first magnetic members 412 with opposite magnetizing directions are alternately arranged, so as to form a magnetic member array and generate a magnetic field with a stronger magnetic field strength.
Optionally, at least three first magnetic members 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 may also form a halbach magnetic member array, so that according to the magnetic field law of the halbach array, the portion of the surface of the diaphragm 21 corresponding to the first magnetic member 412 is located in a magnetic field that is better than the portion not corresponding to the first magnetic member 412, including the aspects of magnetic field strength, linearity of the magnetic field strength with position change, and uniformity of distribution of magnetic induction lines.
It is understood that voice coil 22 may alternatively be provided in an area defined by an orthographic projection of first magnetic member 412 on the surface of diaphragm 21. Optionally, the orthographic projection of the voice coil 22 on the surface of the diaphragm 21 is located in the orthographic projection of the first magnetic member 412 on the surface of the diaphragm 21, so that the voice coil 22 is in a reasonable magnetic field, distortion of the audio output by the loudspeaker 100 is relieved, and the quality of the audio output by the loudspeaker 100 is improved.
Because the magnetic induction lines in the two adjacent first magnetic parts 412 are opposite in direction, the direction of the magnetic force applied to the voice coil 22 corresponding to the two adjacent first magnetic parts 412 is the same, so that the vibration and sound production of the diaphragm 21 are facilitated, the proportion occupied by a reasonable magnetic field in the magnetic field at the diaphragm 21 is improved, namely, the proportion of the part, corresponding to the first magnetic part 412, of the surface of the diaphragm 21 is improved, the rationality of the magnetic field at the diaphragm 21 is facilitated to be improved, the distortion condition of the audio output by the loudspeaker 100 is relieved, and the tone quality of the audio output by the loudspeaker 100 is improved.
It can be understood that the distance from the surface of the adjacent two first magnetic members 412 adjacent to the diaphragm 21 is the same, so as to further improve the rationality of the magnetic field in which the diaphragm 21 is located, further alleviate the distortion of the audio output by the speaker 100, and improve the sound quality of the audio output by the speaker 100.
In this embodiment, the magnetizing directions of two adjacent first magnetic members 412 of the at least three first magnetic members 412 of the first magnetic circuit portion 41 are opposite, that is, when the N-pole of one first magnetic member 412 of the two adjacent first magnetic members 412 is above and the S-pole is below, the N-pole of the other first magnetic member 412 is below and the S-pole is above, and vice versa. Of course, in other embodiments, two adjacent first magnetic members 412 are spaced apart, so that a horizontal magnetic field can be formed directly above the spacing.
It is understood that, in other embodiments, one first magnetic element 412 disposed transversely may be disposed between two adjacent first magnetic elements 412, that is, the N-pole of the first magnetic element 412 disposed between two adjacent first magnetic elements 412 is opposite to and spaced apart from one first magnetic element 412, and the S-pole is opposite to and spaced apart from the other first magnetic element 412, which is not limited herein. Alternatively, the two first magnetic members 412 on both sides of the middle first magnetic member 412 are arranged in the transverse direction, for example, when the N-pole of the middle first magnetic member 412 is located at the lower side and the S-pole is located at the upper side, the S-poles of the two first magnetic members 412 on both sides of the middle first magnetic member 412 are located at the end close to the middle first magnetic member 412, and the N-pole is located at the end far from the middle first magnetic member 412, or vice versa, which is not limited herein.
In one embodiment, as shown in fig. 1, 2, 5, 6 and 7, the number of the first magnetic members 412 is three, the number of the second magnetic members 421 is one, and the magnetizing direction of the second magnetic members 421 is opposite to the magnetizing direction of the first magnetic members 412 located at the middle position.
It can be understood that, by providing the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on two opposite sides of the vibration system 2, that is, forming magnetic fields with stronger magnetic field strength on two opposite sides of the diaphragm 21, the strength of the magnetic field where the diaphragm 21 is located is further enhanced, so as to further improve the sensitivity of controlling the vibration of the diaphragm 21 and improve the sound quality of the audio output by the speaker 100.
In this embodiment, the magnetizing direction of the second magnetic member 421 is opposite to the magnetizing direction of the first magnetic member 412 located at the middle position in the first magnetic circuit portion 41, so that the magnetic lines of induction of the magnetic field where the diaphragm 21 is located are distributed more uniformly, and the variation of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity, thereby optimizing the performance of the loudspeaker 100 and increasing the BL of the loudspeaker 100 by 37.64%.
In an embodiment, the number of the second magnetic members 421 is the same as the number of the first magnetic members 412, and the magnetizing directions of the first magnetic members 412 and the second magnetic members 421 corresponding to each other are opposite.
In this embodiment, as shown in fig. 8 and 9, the number of the first magnetic members 412 is three, five or more, and correspondingly, the number of the second magnetic members 421 is three, five or more, so that the magnetizing directions of the first magnetic members 412 and the second magnetic members 421 corresponding to each other are opposite. It can be understood that, by respectively providing the second magnetic circuit portion 42 and the first magnetic circuit portion 41 on two opposite sides of the vibration system 2, and making the magnetizing directions of the first magnetic member 412 in the first magnetic circuit portion 41 and the second magnetic member 421 in the second magnetic circuit portion 42 corresponding to each other up and down opposite, that is, making the magnetic fields generated by the magnetic member arrays on the surfaces of two sides of the diaphragm 21 symmetrical, the magnetic induction lines of the magnetic field in which the diaphragm 21 is located are distributed more uniformly, and the variation of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity.
Alternatively, the first and second magnetic circuit portions 41 and 42 located on opposite sides of the vibration system 2 may form an array of halbach magnets, respectively. Of course, in other embodiments, the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on two opposite sides of the vibration system 2 may also form other magnetic element arrays, which is not limited herein.
In some embodiments of the present invention, by controlling the magnetizing directions of the first magnetic circuit portion 41 and the second magnetic circuit portion 42, so that the second magnetic circuit portion 42 and the first magnetic circuit portion 41 respectively form a halbach magnetic element array on the two side surfaces of the diaphragm 21, it is beneficial to alleviate the second harmonic distortion and the third harmonic distortion of the diaphragm 21, further alleviate the distortion of the audio output by the speaker 100, and improve the sound quality of the audio output by the speaker 100. In the present embodiment, by appropriately adjusting the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41, the effective magnetic field is fully utilized, and the BL value of the speaker 100 is further increased.
In the present embodiment, the BL value of the loudspeaker 100 is increased by 37.12% by changing the different magnetizing directions of the second magnetic path portion 42 and the first magnetic path portion 41 on the opposite sides of the vibration system 2 for optimization.
In one embodiment, the first magnetic circuit portion 41 includes a magnetic member group 411, and the magnetic member group 411 includes three first magnetic members 412 arranged in the horizontal direction. As shown in fig. 6, in an embodiment, the first magnetic member 412 located at the middle position among the three first magnetic members 412 is magnetized downward along the vertical direction, and the first magnetic members 412 located at the two ends are respectively magnetized along the horizontal direction and the direction far away from the middle first magnetic member 412. As shown in fig. 7, in another embodiment, the first magnetic member 412 located at the middle position among the three first magnetic members 412 is magnetized upward along the vertical direction, and the first magnetic members 412 located at the two ends are magnetized along the horizontal direction and toward the direction close to the middle first magnetic member 412, respectively.
In the present embodiment, the magnetic member set 411 includes three first magnetic members 412, for example, a middle first magnetic member 412 and adjacent first magnetic members 412 on two sides of the middle first magnetic member 412, and the halbach magnetic member array is formed by adjusting the magnetizing directions of the three first magnetic members 412 in the magnetic member set 411. It can be understood that by setting the magnetizing directions of the three first magnetic members 412 to be the first magnetic member 412 located at the middle position to be magnetized downward in the vertical direction, the first magnetic members 412 located at both ends are respectively magnetized horizontally and toward the direction away from the middle first magnetic member 412, thereby generating a magnetic field consisting of a loop of alternating polarities which emanate from the middle first magnetic member 412, are bent along the path above the first magnetic members 412 polarized in the + and-X directions, and finally return to the first magnetic members 412 on the outermost portion of the array.
In an embodiment, as shown in fig. 12, the magnetic member set 411 includes five first magnetic members 412 arranged along a horizontal direction, the first magnetic member 412 located at a middle position is magnetized downward along a vertical direction, the two first magnetic members 412 located at two ends are magnetized upward along the vertical direction, and the two first magnetic members 412 disposed at two sides of the first magnetic member 412 located at the middle position are respectively magnetized along the horizontal direction and the direction facing away from the first magnetic member 412 located at the middle position.
It is understood that the magnetic member group 411 includes three, five or more first magnetic members 412, and the first magnetic circuit portion 41 of the halbach array is formed by adjusting the magnetizing directions of the three, five or more first magnetic members 412 in the magnetic member group 411. In the present embodiment, by setting the magnetizing directions of the five first magnetic members 412 to be the first magnetic member 412 located at the middle position to be magnetized downward in the vertical direction, and the two first magnetic members 412 located at the two ends to be magnetized upward in the vertical direction, the two or more first magnetic members 412 located at the two sides of the first magnetic member 412 located at the middle position are respectively magnetized in the direction horizontal and toward the first magnetic member 412 located away from the middle position, thereby generating a magnetic field composed of a loop of alternating polarities, which emanate from the middle first magnetic member 412, are bent along paths above the first magnetic members 412 polarized in the + and-X directions, and finally return to the first magnetic members 412 on the outermost portion of the array.
In one embodiment, as shown in fig. 1, 2, 5, 6, 7 and 10, the second magnetic member 421 is one, and the magnetizing direction of the second magnetic member 421 is opposite to the magnetizing direction of the first magnetic member 412 located at the middle position.
It can be understood that by providing the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on two opposite sides of the vibration system 2, that is, by providing symmetric magnetic fields generated by the magnetic element arrays on the two side surfaces of the diaphragm 21, the strength of the magnetic field of the diaphragm 21 is further enhanced, so as to further improve the sensitivity of controlling the vibration of the diaphragm 21 and improve the sound quality of the audio output by the speaker 100.
In this embodiment, the magnetizing direction of the second magnetic member 421 is opposite to the magnetizing direction of the first magnetic member 412 located at the middle position in the first magnetic circuit portion 41, so that the magnetic lines of induction of the magnetic field where the diaphragm 21 is located are distributed more uniformly, and the variation of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity, thereby optimizing the performance of the loudspeaker 100 and increasing the BL of the loudspeaker 100 by 37.64%.
It can be understood that, by the above arrangement, and adjusting the magnetizing directions of the second magnetic member 421 in the second magnetic circuit portion 42 and the first magnetic member 412 in the first magnetic circuit portion 41, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 respectively form a halbach magnetic member array on the two side surfaces of the diaphragm 21, which is not limited herein.
Fig. 14 shows a simulation result of magnetic field distribution of the diaphragm 21 with the first magnetic circuit portion 41 and the second magnetic circuit portion 42 respectively disposed on both sides thereof according to the embodiment of the present invention. It can be clearly seen that the magnetic induction lines between the magnetic fields on the surfaces of the two sides of the diaphragm 21 are distributed most densely, and the magnetic field is strongest, i.e., the magnetic field environment where the diaphragm 21 is located; and the lines of magnetic induction between the first magnetic member 412/the second magnetic member 421 of the magnetic fields on both sides are straight and uniformly distributed, which means that the magnetic field strength distribution between the first magnetic member 412/the second magnetic member 421 of the magnetic fields on both sides is uniform and symmetrical, so that the voice coil 22 is optionally disposed in the area defined by the orthographic projection of the first magnetic member 412 on the surface of the diaphragm 21.
In an embodiment, the first magnetic circuit portion 41 further includes a third magnetic element 413, the third magnetic element 413 is disposed at two ends of the magnetic element group 411, and an extending direction of the third magnetic element 413 is perpendicular to an extending direction of the first magnetic element 412.
It can be understood that, as shown in fig. 10 and 11, by providing the third magnetic members 413 at two ends of the magnetic member group 411 respectively, the extending direction of the third magnetic members 413 is perpendicular to the extending direction of the first magnetic member 412, so that the magnetic field in the extending direction of the first magnetic member 412 is enhanced by the third magnetic members 413, the voice coil 22 corresponding to the third magnetic members 413 is subjected to the magnetic force generated by the third magnetic members 413, and the reciprocating vibration of the diaphragm 21 is controlled, so as to improve the sensitivity of the vibration of the diaphragm 21.
In an embodiment, as shown in fig. 8 and 9, the number of the second magnetic members 421 is the same as the number of the first magnetic members 412, and the magnetizing directions of the first magnetic members 412 and the second magnetic members 421 corresponding to each other up and down are symmetrically arranged on the plane where the voice coil 22 is located.
In this embodiment, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on two opposite sides of the vibration system 2, and the magnetizing directions of the first magnetic member 412 in the first magnetic circuit portion 41 and the second magnetic member 421 in the second magnetic circuit portion 42 which correspond to each other up and down are opposite, that is, the magnetic fields generated by the magnetic member arrays on the surfaces of the two sides of the diaphragm 21 are symmetrical, so that the magnetic induction lines of the magnetic field in which the diaphragm 21 is located are distributed more uniformly, and the variation of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity.
It can be understood that, by the above arrangement, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 respectively form the halbach magnetic element array on the two side surfaces of the diaphragm 21, which is beneficial to relieving the second harmonic distortion and the third harmonic distortion of the diaphragm 21, further relieving the distortion of the audio output by the speaker 100, and improving the sound quality of the audio output by the speaker 100. In the present embodiment, by appropriately adjusting the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41, the effective magnetic field is fully utilized, and the BL value of the speaker 100 is further increased.
In the present embodiment, the BL value of the loudspeaker 100 is increased by 37.12% by changing the different magnetizing directions of the second magnetic path portion 42 and the first magnetic path portion 41 on the opposite sides of the vibration system 2 for optimization.
In one embodiment, a connecting member 414 is disposed between two adjacent first magnetic members 412 to define a mounting gap 415 between the two first magnetic members 412.
In this embodiment, as shown in fig. 1, fig. 2, and fig. 5 to fig. 9, by providing a connecting member 414 between two adjacent first magnetic members 412, the first magnetic members 412 are fixed by the connecting member 414, so as to ensure that the relative positional relationship between the first magnetic circuit portion 41 and the diaphragm 21 is also fixed, thereby ensuring the vibration frequency of the diaphragm 21. Meanwhile, the connecting piece 414 arranged between two adjacent first magnetic pieces 41 is used to define the assembling gap 415 between the two first magnetic pieces 412, on one hand, the assembling gap 415 is used to facilitate the assembling of the first magnetic circuit part 41, on the other hand, the assembling gap 415 can also be used to reduce the obstruction of the magnetic field to the air flow, so that the loudspeaker 100 has good air compliance, the tone quality of the audio output by the loudspeaker 100 is further improved, the high-pitch effect is improved, and meanwhile, the distortion condition of the audio output by the loudspeaker 100 is relieved.
It can be understood that two adjacent first magnetic members 412 may also be disposed at an interval, so as to form a channel for airflow to circulate between two adjacent first magnetic members 412, so as to allow airflow to circulate in the magnetic field, thereby reducing obstruction of the magnetic field to the airflow, so that the speaker 100 has good air compliance, further alleviating distortion of the audio output by the speaker 100, and improving the sound quality and treble effect of the audio output by the speaker 100.
Of course, in other embodiments, the adjacent two first magnetic members 412 may also be fixed in relative positions with respect to each other by gluing, mechanical pressing, and fixing to an external structure such as a bracket, so as to ensure that the relative positional relationship between the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on the two side surfaces of the diaphragm 21 and the diaphragm 21 is also fixed, which is not limited herein.
Optionally, the spacing between any two adjacent first magnetic members 412 is uniform. Of course, in other embodiments, the first magnetic member 412 may be configured as a ring-like magnetic structure, which is not limited herein. The first 412/second 421 magnetic members of the first 41 and second 42 magnetic circuit portions may also be arranged so that different areas of the sheet of magnetic material, e.g. powdered ferrite in an adhesive, are exposed to different magnetic fields for magnetization. Alternatively, the first magnetic part 412/the second magnetic part 421 of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 may be independent magnets, such as magnetic strips, which may be magnetized in different directions and then arranged side by side to effectively form a flat magnetic array with a rotating magnetic field, which is not limited herein.
In one embodiment, as shown in fig. 10 to 12, two adjacent first magnetic members 412 are disposed adjacent to each other. It is understood that the two adjacent first magnetic members 412 can be fixed by gluing or mechanical pressing, and the like, which is not limited herein.
In one embodiment, as shown in fig. 1 to 4, the support 3 is formed as a hollow frame structure, the top of the support 3 is connected to the inner wall of the casing 1, the second magnetic circuit portion 42 is located in the support 3, the bottom of the support 3 is provided with an escape opening 31, the diaphragm 21 is connected to the bottom of the support 3, and the voice coil 22 is located in the escape opening 31.
In this embodiment, the top of the support 3 is connected to the inner wall of the casing 1 by providing the support 3 as a hollow frame structure, so that the hollow frame of the support 3 is used to define the second magnetic circuit portion 42, and thus the support 3 made of a magnetic conductive material can be used to perform a magnetic gathering function on the second magnetic circuit portion 42 in the hollow frame, thereby further increasing the magnetic field intensity of the second magnetic circuit portion 42 acting on the diaphragm 21 and the voice coil 22.
It will be appreciated that by providing the escape opening 31 at the bottom of the support 3, the escape opening 31 can be utilized to provide an escape space for the voice coil 22, so that the voice coil 22 is easily subjected to the magnetic force of the first magnetic circuit portion 41. In the present embodiment, in order to avoid ensuring the gap between the voice coil 22 and the first magnetic circuit portion 41 when the holder 3 abuts against the first magnetic circuit portion 41, the holder 3 has a side wall 33 facing the side of the voice coil, and a projection of the side wall 33 and an outer wall of the voice coil 22 in the horizontal direction at least partially overlaps, that is, a bottom portion of the holder 3 protrudes from a surface of the voice coil 22 facing the side of the first magnetic circuit portion 41, so that the magnetic concentration effect of the holder 3 can be improved. Further, the projection of the side wall 33 and the outer wall of the voice coil 22 in the horizontal direction completely overlaps.
In one embodiment, the support 3 is provided with a horizontal connecting portion 32 extending horizontally, a side wall 33 is formed on a side of the horizontal connecting portion 32 facing the voice coil, and a bottom of the horizontal connecting portion 32 abuts against the first magnetic circuit portion 41.
It can be understood that, as shown in fig. 1 to 4, by providing a horizontal connecting portion 32 extending horizontally at the bottom of the support 3, so as to connect the diaphragm 21 with the horizontal connecting portion 32, the mounting stability of the diaphragm 21 is further improved. At this time, the side of the horizontal connecting portion 32 facing the voice coil is the side wall 33, that is, the side wall 33 at least partially overlaps the projection of the outer wall of the voice coil 22 in the horizontal direction, so that when the bottom of the horizontal connecting portion 32 abuts against the first magnetic circuit portion 41, a gap between the voice coil 22 and the first magnetic circuit portion 41 is ensured.
Meanwhile, the horizontal connecting portion 32 is arranged, so that when the bracket 3 is installed in the installation space 11 of the housing 1, the bracket 3 is stopped against the first magnetic circuit portion 41 through the bottom of the horizontal connecting portion 32, so that the assembly is convenient, and the assembly precision is improved. It is understood that the holder 3 is connected to the diaphragm 21, and the voice coil 22 is provided on the diaphragm 21, and the gap between the voice coil 22 and the first magnetic circuit portion 41 can be controlled by controlling the assembly height of the holder 3. By arranging the bottom of the horizontal connecting portion 32 to abut against the first magnetic circuit portion 41, the mounting tolerance of the support 3 and the voice coil 22 can be conveniently controlled, and the assembly efficiency and the assembly precision are improved.
Optionally, the material of the bracket 3 may be SPCC, so as to improve the magnetic permeability and increase the BL value of the speaker 100, which is not limited herein.
Fig. 14 shows a simulation result of magnetic field distribution of the diaphragm 21 with the first magnetic circuit portion 41 and the second magnetic circuit portion 42 respectively disposed on both sides thereof according to the embodiment of the present invention. It can be seen that the horizontal connecting portion 32 is provided on the bracket 3 and extends horizontally by using the bracket 3 made of the magnetic conductive material, so that the magnetic concentration effect of the magnetic field in which the voice coil 22 is located is further improved by using the horizontal connecting portion 32.
In one embodiment, the diaphragm 21 is a single-layer metal material. It will be appreciated that the diaphragm 21 may alternatively be a planar single layer piece of metal material, thereby increasing the sensitivity of the diaphragm 21. Alternatively, the diaphragm 21 is an aluminum plate or the like, which is not limited herein.
Of course, in other embodiments, the diaphragm 21 may also be made of a single-layer film material made of materials such as PET (polyester film), PEEK (polyether ether ketone), PAR (polyarylate), or PI (polyimide), which is not limited herein.
Because the diaphragm 21 of the single-layer film material is too hard and brittle, the surface of the diaphragm 21 is not flat when the tension is small, and the diaphragm 21 is too tight when the tension is large, the film is easy to break; or too soft, the surface tension of the diaphragm 21 is insufficient, and since the diaphragm 21 is too easily stretched, the tension becomes smaller with time or after vibration, eventually resulting in too loose the diaphragm 21. In addition, the internal damping of the single-layer film material is insufficient, and the transient characteristics of the diaphragm 21 have poor trailing edge characteristics, that is, when the vibration coil is turned off, the diaphragm 21 needs to delay for a longer time to stop vibrating due to the too small internal damping. In one embodiment, the diaphragm 21 is formed as a composite structure, and at least the surface connected to the voice coil 22 is made of a metal material.
It is understood that the diaphragm 21 is provided as a composite layer structure, so that the diaphragm 21 can provide a good supporting function and provide sufficient rigidity. In the present embodiment, the surface of the diaphragm 21 connected to the voice coil 22 is made of a metal material, so that the metal material can be used to achieve a good supporting effect and provide sufficient rigidity, and other composite structures of the diaphragm 21 provide good elasticity and sufficient damping, so that the diaphragm 21 has a low distortion effect in a relatively large vibration range.
In this embodiment, the diaphragm 21 may be a double-layer or multi-layer composite structure, which is not limited herein. In the embodiment, a two-layer composite structure is taken as an example, the diaphragm 21 includes a first sub-diaphragm and a second sub-diaphragm, the first sub-diaphragm can provide a good supporting effect and provide sufficient rigidity, and the second sub-diaphragm can provide good elasticity and sufficient damping, so that the diaphragm 21 has a low distortion effect in a relatively large vibration range.
It is understood that the material of the first sub-diaphragm may be a metal material, such as an aluminum plate, and the like, and the material of the second sub-diaphragm may be PEEK (polyether ether ketone), PAR (polyarylate), TPU (Thermoplastic polyurethane elastomers), TPE (Thermoplastic Elastomer), or the like. The first sub-diaphragm and the second sub-diaphragm can be bonded by an adhesive layer such as acrylic, silica gel or other soft polymer materials, and the like, which is not limited herein.
In one embodiment, as shown in FIG. 13, the voice coil 22 is formed in a square shape. It will be appreciated that by configuring the voice coil 22 to have a square configuration such that the voice coil 22 includes a first straight side and a second straight side that are sequentially connected, i.e., the first conductor segment 221 and the second conductor segment 222 of the voice coil 22 are two opposite first straight sides or two second straight sides, respectively, the configuration is such that the voice coil 22 effectively increases the magnetic flux relative to a conventional racetrack-type voice coil.
In one embodiment, there are two voice coils 22, and the two voice coils 22 are disposed on the upper and lower sides of the diaphragm 21.
It is understood that the voice coil 22 may be formed by printing, or evaporation, or 3D printing on the surface of the diaphragm 21. The surface of the diaphragm 21 may be provided with the voice coil 22 only, or both surfaces of the surface of the diaphragm 21 may be provided with the voice coil 22, which is not limited herein.
The current is conducted on the voice coil 22 to drive the diaphragm 21 to vibrate towards a predetermined direction so as to generate sound, wherein the direction of the magnetic force exerted on the voice coil 22 is continuously changed by continuously changing the current flowing direction in the voice coil 22, so that the reciprocating vibration of the diaphragm 21 is controlled. It is understood that the greater the number of voice coils 22, the greater the magnetic force driving the diaphragm 21 to vibrate, and the greater the sensitivity of controlling the vibration of the diaphragm 21. However, the size of the surface of the diaphragm 21 and the product specification of the speaker 100 need to be considered, and is not limited herein.
In this embodiment, the material of the lead of the voice coil 22 may be metal such as aluminum, copper, nickel, gold, silver, or an alloy of these metals, which is not limited herein.
Since only the portion of the surface of the diaphragm 21 where the voice coil 22 is disposed will receive the magnetic force, and the portion where the voice coil 22 is not disposed will not receive the magnetic force, the portion of the diaphragm 21 where the voice coil 22 is disposed and the portion where the voice coil 22 is not disposed will exhibit different split vibrations, i.e., the portion of the surface of the diaphragm 21 where the voice coil 22 is disposed will have a larger vibration amplitude than the portion where the voice coil 22 is not disposed. This will cause the frequency response curve of the speaker 100 to generate a peak-valley, which will distort the audio output from the speaker 100, and finally deteriorate the acoustic performance of the speaker 100.
In view of this, the vibration system 2 further includes a reinforcing portion 23, and the reinforcing portion 23 is disposed on the surface of the diaphragm 21, wherein the hardness of the reinforcing portion 23 is greater than that of the diaphragm 21, so as to enhance the overall rigidity of the surface of the diaphragm 21, so that the surface of the diaphragm 21 has a vibration amplitude as uniform as possible, and the diaphragm 21 exhibits overall piston vibration.
Alternatively, the shape of the reinforcing portion 23 may be circular, but the shape of the reinforcing portion 23 may also be strip-shaped, comb-shaped, or the like. In one embodiment, the diaphragm 21 is provided with a plurality of reinforcing portions 23, the extending direction of the reinforcing portions 23 intersects with the voice coil 22, and is optionally perpendicular to the voice coil 22, so as to form a cross grid shape, the voice coil 22 can also play a role of enhancing the overall rigidity of the surface of the diaphragm 21, and the voice coil 22 and the reinforcing portions 23 together enhance the overall rigidity of the surface of the diaphragm 21.
In an embodiment, as shown in fig. 4, the reinforcing portion 23 and the voice coil 22 may be disposed on two opposite sides of the diaphragm 21, which is not limited herein.
The loudspeaker 100 of the invention forms a magnetic field with stronger magnetic field intensity by arranging the magnetic circuit part at least at one side of the vibration system 2, so that the vibrating diaphragm 21 is positioned in the stronger magnetic field intensity, thereby ensuring that the magnetic induction lines at the vibrating diaphragm 21 are uniformly distributed and the change of the magnetic field intensity has good linearity, effectively improving the tone quality of the audio output by the loudspeaker 100, improving the high-pitch effect and simultaneously relieving the distortion condition of the audio output by the loudspeaker 100 to a certain extent. Moreover, by arranging the bracket 3, suspending the vibration system 2 in the installation space 11 of the housing 1 by using the bracket 3, and arranging the bracket 3 as a magnetic conductive material, on one hand, the bracket 3 is used for providing stability for installing the vibration system 2 so as to improve the sensitivity of the diaphragm 21; on the other hand, the side wall 33 of the side of the bracket 3 facing the voice coil is at least partially overlapped with the projection of the outer wall of the voice coil 22 along the horizontal direction, so that the magnetic force line generated by the magnetic circuit system 4 vertically passes through the first wire section 221 and the second wire section 222 of the voice coil 22 along the horizontal direction, and the direction of the magnetic force line passing through the first wire section 221 and the second wire section 222 is opposite, so that the magnetic induction line at the position of the diaphragm 21 is uniformly distributed, the magnetic field change in the vibration direction of the diaphragm 21 has good linearity, the distortion condition of the audio output by the loudspeaker 100 can be greatly relieved, and the tone quality and the treble effect of the audio output by the loudspeaker 100 are improved.
The invention also proposes an electronic device comprising a device body and a loudspeaker 100. The specific structure of the speaker 100 refers to the foregoing embodiments, and since the electronic device adopts all technical solutions of all the foregoing embodiments, at least all beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (14)
1. A loudspeaker, characterized in that the loudspeaker comprises:
a housing defining an installation space therein;
the vibration system is arranged in the installation space and comprises a vibrating diaphragm and a voice coil arranged on the vibrating diaphragm, the voice coil is arranged along the surface of the vibrating diaphragm, the central axis of the voice coil is vertical to the vibrating diaphragm, the voice coil at least comprises a first wire section and a second wire section which are oppositely arranged, and the current directions in the first wire section and the second wire section are opposite;
the support is a magnetic conductive material piece, the support is connected with the vibrating diaphragm so as to suspend the vibration system in the installation space, the support is provided with a side wall facing one side of the voice coil, and the side wall and the voice coil are at least partially overlapped along the projection of the horizontal direction; and
magnetic circuit, magnetic circuit establishes in the installation space, magnetic circuit with the voice coil loudspeaker voice coil is relative and the interval sets up, magnetic circuit includes first magnetic circuit part and second magnetic circuit part, second magnetic circuit part with first magnetic circuit part is located respectively the relative both sides of voice coil loudspeaker voice coil, second magnetic circuit part includes at least one second magnetic part, first magnetic circuit part includes at least three first magnetic part, magnetic line of force of magnetic circuit part is at least partly along the horizontal direction perpendicular pass first wire section with the second wire section, and pass first wire section with the magnetic line of force direction of second wire section is opposite.
2. The loudspeaker of claim 1, wherein the first magnetic members are magnetized in a vertical direction, and the magnetizing directions of two adjacent first magnetic members are opposite.
3. The speaker of claim 2, wherein the number of the first magnetic members is three, the number of the second magnetic members is one, and the magnetization direction of the second magnetic members is opposite to the magnetization direction of the first magnetic members located at the middle position.
4. The loudspeaker of claim 2, wherein the number of the second magnetic members is the same as that of the first magnetic members, and the magnetizing directions of the first magnetic members and the second magnetic members which correspond to each other up and down are opposite.
5. A loudspeaker according to claim 1, wherein the first magnetic circuit portion comprises a set of magnetic elements;
the magnetic part group comprises three first magnetic parts which are arranged along the horizontal direction, the first magnetic part positioned in the middle is magnetized downwards along the vertical direction, and the first magnetic parts positioned at the two ends are respectively magnetized along the horizontal direction and the direction far away from the first magnetic part in the middle; or the first magnetic part in the middle is magnetized upwards along the vertical direction, and the first magnetic parts at the two ends are magnetized along the horizontal direction and towards the direction close to the first magnetic part in the middle respectively;
or the magnetic part group comprises five first magnetic parts which are arranged along the horizontal direction, the first magnetic part positioned in the middle position is magnetized downwards along the vertical direction, the two first magnetic parts positioned at the two ends are magnetized upwards along the vertical direction, and the two first magnetic parts arranged at the two sides of the first magnetic part positioned in the middle position are respectively magnetized along the horizontal direction and the direction which is far away from the first magnetic part at the middle position.
6. The speaker of claim 5, wherein the second magnetic member is one, and a magnetizing direction of the second magnetic member is opposite to a magnetizing direction of the first magnetic member located at the middle position.
7. The speaker of claim 6, wherein the first magnetic circuit portion further comprises third magnetic members provided at both ends of the magnetic member group, and an extending direction of the third magnetic members is perpendicular to an extending direction of the first magnetic member.
8. The loudspeaker of claim 5, wherein the number of the second magnetic members is the same as the number of the first magnetic members, and the magnetizing directions of the first magnetic members and the second magnetic members which are vertically corresponding are symmetrically arranged with respect to a plane where the voice coil is located.
9. The loudspeaker according to any one of claims 1 to 8, wherein a connecting piece is arranged between two adjacent first magnetic pieces to define a fitting gap between the two first magnetic pieces;
or, two adjacent first magnetic pieces are arranged in an abutting mode.
10. The speaker of any one of claims 1 to 8, wherein the support is formed as a hollow frame structure, a top portion of the support is connected to an inner wall of the housing, the second magnetic circuit portion is located in the support, a bottom portion of the support is provided with an escape opening, the diaphragm is connected to the bottom portion of the support, and the voice coil is located in the escape opening.
11. The speaker according to any one of claims 1 to 8, wherein the bracket is provided with a horizontally extending horizontal connecting portion, a side of the horizontal connecting portion facing the voice coil is the side wall, and a bottom of the horizontal connecting portion abuts against the first magnetic circuit portion.
12. The loudspeaker of any one of claims 1 to 8, wherein the diaphragm is a single layer of metal material;
or, the diaphragm is formed into a composite layer structure, and at least the surface connected with the voice coil is made of metal material.
13. The speaker according to any one of claims 1 to 8, wherein the voice coil is formed in a square shape.
14. An electronic device, characterized in that it comprises a loudspeaker according to any one of claims 1 to 13.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021101808129 | 2021-02-07 | ||
| CN202110180812 | 2021-02-07 | ||
| PCT/CN2021/136223 WO2022166373A1 (en) | 2021-02-07 | 2021-12-08 | Loudspeaker and electronic device |
| CNPCT/CN2021/136223 | 2021-12-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114257932A true CN114257932A (en) | 2022-03-29 |
| CN114257932B CN114257932B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111586609.8A Active CN114286266B (en) | 2021-02-07 | 2021-12-21 | Speaker and electronic device |
| CN202111575847.9A Active CN114257933B (en) | 2021-02-07 | 2021-12-21 | Speaker and electronic device |
| CN202111573608.XA Active CN114257932B (en) | 2021-02-07 | 2021-12-21 | Speaker and electronic device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111586609.8A Active CN114286266B (en) | 2021-02-07 | 2021-12-21 | Speaker and electronic device |
| CN202111575847.9A Active CN114257933B (en) | 2021-02-07 | 2021-12-21 | Speaker and electronic device |
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| CN (3) | CN114286266B (en) |
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| CN114866918A (en) * | 2022-04-29 | 2022-08-05 | 歌尔股份有限公司 | Sound production device and audio equipment |
| WO2024021382A1 (en) * | 2022-07-25 | 2024-02-01 | 深圳市韶音科技有限公司 | Transducer device, loudspeaker and acoustic output device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117676440A (en) * | 2022-08-30 | 2024-03-08 | 华为技术有限公司 | Sound production device and electronic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114286266B (en) | 2023-08-29 |
| CN114286266A (en) | 2022-04-05 |
| CN114257933B (en) | 2023-08-29 |
| CN114257933A (en) | 2022-03-29 |
| CN114257932B (en) | 2024-05-31 |
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