CN114257933B

CN114257933B - Speaker and electronic device

Info

Publication number: CN114257933B
Application number: CN202111575847.9A
Authority: CN
Inventors: 朱跃光; 王继宗
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-02-07
Filing date: 2021-12-21
Publication date: 2023-08-29
Anticipated expiration: 2041-12-21
Also published as: CN114257932A; CN114257933A; CN114286266B; CN114286266A

Abstract

The invention discloses a loudspeaker and electronic equipment, the loudspeaker comprises a shell, a vibration system, a bracket and a magnetic circuit system, wherein the vibration system is arranged in the installation space of the shell, the vibration system comprises a vibrating diaphragm and two voice coils arranged on the upper side and the lower side of the vibrating diaphragm, each voice coil is at least provided with a first wire segment and a second wire segment which are oppositely arranged, and the current directions in the first wire segment and the second wire segment are opposite; the bracket is a magnetic conduction material piece, the bracket is connected with the vibrating diaphragm, the bracket 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; the magnetic circuit system is arranged in the installation space, is opposite to the voice coil and is arranged at intervals, and magnetic force lines of the magnetic circuit system at least partially vertically penetrate through the first wire section and the second wire section along the horizontal direction, and the magnetic force lines penetrating through the first wire section and the second wire section are opposite in direction. The invention aims to provide a loudspeaker which can effectively improve the tone quality and the high-pitch effect.

Description

Speaker and electronic device

Technical Field

The present invention relates to the field of speaker technologies, and in particular, to a speaker and an electronic device using the speaker.

Background

The loudspeaker, also called loudspeaker, is widely used as an electroacoustic transducer in electronic devices such as sound boxes, headphones, mobile phones and the like. The current speakers can be classified into moving coil speakers, moving iron speakers, and planar diaphragm speakers in terms of operation principle. In the related art, in order to pursue higher sound quality, electronic devices such as headphones often use multiple driving units, i.e., tweeters and woofers. However, the existing tweeter generally has the problem of poor tweeter 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 the loudspeaker which can effectively improve the tone quality and the high-pitch effect.

To achieve the above object, the present invention proposes 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 two voice coils, the two voice coils are arranged on the upper side and the lower side of the vibrating diaphragm, the voice coils are distributed along the surface of the vibrating diaphragm, the central axis of the voice coils is perpendicular to the vibrating diaphragm, each voice coil is at least provided with a first wire segment and a second wire segment which are oppositely arranged, and the current directions in the first wire segment and the second wire segment are opposite;

the bracket is a magnetic conduction material piece and is connected with the vibrating diaphragm so as to suspend the vibration system in the installation space, the bracket 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; a kind of electronic device with high-pressure air-conditioning system

The magnetic circuit system is arranged in the installation space, the magnetic circuit system is opposite to the voice coil and is arranged at intervals, the magnetic circuit system comprises a first magnetic circuit part, the first magnetic circuit part comprises at least three first magnetic pieces, magnetic force lines of the magnetic circuit system at least partially vertically penetrate through the first wire section and the second wire section along the horizontal direction, and the magnetic force lines penetrating through the first wire section and the second wire section are opposite in direction.

In an embodiment, the first magnetic members magnetize in a vertical direction, and magnetizing directions of two adjacent first magnetic members are opposite.

In an embodiment, the first magnetic circuit portion comprises a set of magnetic elements;

the magnetic piece group comprises three first magnetic pieces which are arranged along the horizontal direction, the first magnetic pieces positioned in the middle position are magnetized downwards along the vertical direction, and the first magnetic pieces positioned at the two ends are magnetized along the horizontal direction and towards the direction far away from the middle first magnetic pieces respectively; or the first magnetic pieces positioned at the middle position are magnetized upwards along the vertical direction, and the first magnetic pieces positioned at the two ends are magnetized along the horizontal direction and towards the direction close to the middle first magnetic piece respectively;

or, the magnetic component group comprises five first magnetic components which are arranged along the horizontal direction, the first magnetic components at the middle position are magnetized downwards along the vertical direction, the two first magnetic components at the two ends are magnetized upwards along the vertical direction, and the two first magnetic components at the two sides of the first magnetic components at the middle position are magnetized along the directions of being horizontal and facing away from the first magnetic components at the middle position respectively.

In an embodiment, the first magnetic circuit portion further includes a third magnetic member, the third magnetic member is disposed at two ends of the magnetic member set, and an extending direction of the third magnetic member is perpendicular to an extending direction of the first magnetic member.

In an embodiment, the magnetic circuit system further includes a second magnetic circuit portion, where the second magnetic circuit portion and the first magnetic circuit portion are respectively disposed on two opposite sides of the diaphragm, the first magnetic circuit portion is opposite to one of the voice coils and is disposed at an interval, the second magnetic circuit portion is opposite to the other of the voice coils and is disposed at an interval, and the second magnetic circuit portion includes at least one second magnetic element.

In an embodiment, the second magnetic member is one, and a magnetization direction of the second magnetic member is opposite to a magnetization direction of the first magnetic member located at the middle position.

In an embodiment, the number of the second magnetic elements is the same as the number of the first magnetic elements;

the magnetizing directions of the first magnetic piece and the second magnetic piece which are vertically corresponding are opposite; or, the magnetizing directions of the first magnetic piece and the second magnetic piece which are vertically corresponding are symmetrically arranged on the plane where the voice coil is located.

In an embodiment, the support is formed into a hollow frame structure, the top of the support is connected with the inner wall of the housing, the second magnetic circuit part is located in the support, an avoidance opening is formed in the bottom of the support, the vibrating diaphragm is connected with the bottom of the support, and the voice coil is located in the avoidance opening.

In an embodiment, the support is provided with a horizontal connecting portion extending horizontally, one side of the horizontal connecting portion facing the voice coil is the side wall, and the bottom of the horizontal connecting portion is abutted against the first magnetic circuit portion.

In one embodiment, a connecting member is disposed between two adjacent first magnetic members to define an assembly gap between the two first magnetic members;

or, two adjacent first magnetic pieces are arranged in a leaning way.

In one embodiment, the diaphragm is a single-layer metal material piece;

or the vibrating diaphragm is formed into a composite layer structure, and at least the surface connected with the voice coil is made of a 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 loudspeaker of the technical scheme, the vibration system is suspended in the installation space of the shell by the aid of the support of the magnetic conduction material piece, and the two voice coils are respectively arranged on the upper side and the lower side of the vibrating diaphragm, so that the magnetic circuit system installed in the installation space is opposite to the two voice coils of the vibration system and are arranged at intervals, a strong magnetic field is generated by the aid of at least three first magnetic pieces of the first magnetic circuit part in the magnetic circuit system, the vibrating diaphragm and the two voice coils are in the strong magnetic field intensity, magnetic induction lines at the vibrating diaphragm are uniformly distributed, the change of the magnetic field intensity has good linearity, sound quality of audio output by the loudspeaker can be effectively improved, and high-pitched sound effect is improved; meanwhile, by arranging the two voice coils, the driving force for driving the vibration of the vibrating diaphragm is larger, so that the sensitivity of the vibration of the vibrating diaphragm is controlled to be higher; the magnetic force lines of the magnetic circuit system at least partially vertically penetrate through the first wire section and the second wire section of the voice coil along the horizontal direction, and the directions of the magnetic force lines penetrating through the first wire section and the second wire section are opposite, so that the tone quality and the high-pitch effect of the loudspeaker are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a speaker according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a speaker according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a speaker according to another embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a bracket coupled to a vibration system according to another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a voice coil and a magnetic circuit system according to a first embodiment of the present invention;

FIG. 6 is a schematic 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 schematic 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 diagram of a magnetic circuit system according to an embodiment of the present invention;

FIG. 11 is a schematic diagram 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 accordance with another embodiment of the invention;

FIG. 13 is a schematic diagram of an audio 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 invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The loudspeaker, also called loudspeaker, is widely used as an electroacoustic transducer in electronic devices such as sound boxes, headphones, mobile phones and the like. The current speakers can be classified into moving coil speakers, moving iron speakers, and planar diaphragm speakers in terms of operation principle. The moving-coil loudspeaker has the advantages of simple structure, mature process and good performance, but has the defects of large vibration mass, poor transient characteristic, different degrees of swinging vibration generated by mass distribution, film compliance and asymmetric distribution of BL electromagnetic driving force, serious peak-valley generated by high-frequency response caused by split vibration of different frequencies, high product distortion caused by the nonlinear problem of the moving-coil loudspeaker and serious deterioration of acoustic performance. 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.

To obtain better sound quality, planar diaphragm technology has emerged. A planar diaphragm loudspeaker applying planar diaphragm technology integrates a planar voice coil on the surface of a diaphragm and places the diaphragm in a magnetic field environment generated by a magnetic assembly. When an alternating current signal is passed through the coil, the coil is forced to drive the vibrating diaphragm to make reciprocating motion, so that the air density change is caused to sound. However, 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 weaker, the sensitivity of the planar diaphragm loudspeaker is insufficient, or the magnetic induction lines are unevenly distributed and the linearity is poorer; or the magnetic component is not provided with an air circulation channel inside, so that the magnetic component has larger obstruction to air flow. The problems of serious distortion of the output audio frequency of the planar vibrating diaphragm loudspeaker, poor tone quality and high sound effect and the like are caused.

In the related art, in order to pursue higher sound quality, electronic devices such as headphones often use multiple driving units, i.e., tweeters and woofers. However, the existing tweeter generally has the problem of poor tweeter effect, thereby affecting the tone quality of the electronic equipment and affecting the use effect of users.

Based on the above concepts and problems, the present invention proposes a speaker 100. It should be understood that the speaker 100 may be applied to electronic devices such as a speaker, a headset, a mobile phone, and the like, and is not limited herein.

Referring to fig. 1 to 13 in combination, in the embodiment of the invention, the speaker 100 includes a housing 1, a vibration system 2, a support 3 and a magnetic circuit 4, wherein an installation space 11 is defined in the housing 1, the vibration system 2 is disposed in the installation space 11, the vibration system 2 includes a diaphragm 21 and two voice coils 22, the two voice coils 22 are disposed on upper and lower sides of the diaphragm 21, the voice coils 22 are routed along a surface of the diaphragm 21 and a central axis of the voice coils 22 is perpendicular to the diaphragm 21, each voice coil 22 has at least a first wire segment 221 and a second wire segment 222 disposed opposite to each other, a current direction in the first wire segment 221 and the second wire segment 222 is opposite to each other, the support 3 is a magnetic conductive material piece, the support 3 is connected to the diaphragm 21 to suspend the vibration system 2 in the installation space 11, the support 3 has a side wall 33 facing one side of the voice coils, the side wall 33 is at least partially overlapped with a projection of the voice coils 22 in a horizontal direction, the magnetic circuit 4 is disposed in the installation space 11, the magnetic circuit 4 is opposite to the voice coils 22 and is disposed at a distance from the voice coils 22, the magnetic circuit 4 includes a first magnetic circuit portion 41, the first magnetic circuit portion 41 includes at least three first wire segments 221 and at least three magnetic circuit segments 412, and at least the first magnetic circuit segments 4 pass through the first wire segments and the second wire segments 222 in opposite directions to the first wire segments and pass through the first wire segments and the second wire segments 222.

It will be appreciated that the housing 1 is used for mounting, fixing, supporting and protecting components such as the vibration system 2, the bracket 3 and the magnetic circuit system 4, i.e. 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 to be understood that the housing 1 may be a mounting case, housing, or case having the mounting space 11, and the like, and is not limited herein.

In the present embodiment, the housing 1 may be provided in a circular or square structure or the like, and is not limited herein. The housing 1 includes an upper case 12 and a lower case 13 mated with the upper case 12 such that the upper case 12 and the lower case 13 enclose an installation space 11. It will be appreciated that the lower shell 13 may be provided in a U-shaped configuration, which may include a planar bottom wall and side walls provided to the bottom wall. The upper shell 12 may also be provided in a U-shaped configuration, which may include a flat top wall and side walls of the top wall, respectively. The upper case 12 and the lower case 13 are thus fastened together in a crossing manner, thereby defining an installation space 11 for installing the components such as the vibration system 2, the bracket 3, the magnetic circuit system 4, and the like. Of course, the upper case 12 may be a flat plate structure, which is not limited herein.

It will be appreciated that the vibration system 2 includes a diaphragm 21 and two voice coils 22, where the two voice coils 22 are respectively disposed on opposite sides of the diaphragm 21, and the diaphragm 21 may be configured as a flat diaphragm 21, so that the two voice coils 22 are respectively disposed on flat surfaces on opposite sides 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 constituted by a plurality of coils provided on the same surface of the diaphragm 21, and is not limited thereto.

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, but not limited thereto. Further, the diaphragm 21 may be a metal planar diaphragm.

In the present embodiment, by providing the bracket 3, the bracket 3 is provided as a magnetic conductive material member, so that the vibration system 2 is suspended in the installation space 11 by using the bracket 3, on the one hand, stability is provided for the 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 projection of the side wall 33 of the bracket 3 facing the voice coil side and the projection of the outer wall of the voice coil 22 along the horizontal direction are at least partially overlapped, so that the bracket 3 of the magnetic conductive material piece is utilized to realize the magnetic focusing effect, so that the magnetic force lines generated by the magnetic circuit system 4 vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 along the horizontal direction, and the magnetic force lines passing through the first wire segment 221 and the second wire segment 222 are opposite in direction, thus the magnetic induction lines at the vibrating diaphragm 21 are uniformly distributed, the magnetic field change in the vibrating direction of the vibrating diaphragm 21 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 can be relieved to a certain extent.

It will be appreciated that the bracket 3 has a side wall 33 facing the voice coil side, which side wall 33 at least partially overlaps with the projection of the outer wall of at least one voice coil 22 in the horizontal direction, i.e. the side wall 33 may at least partially overlap with the projection of the outer wall of one voice coil 22 in the horizontal direction, or the side wall 33 may at least partially overlap with the projections of both outer walls of both voice coils 22 in the horizontal direction. Of course, in other embodiments, two side walls 33 are formed on the side of the support 3 facing the voice coil 22, and each side wall 33 corresponds to one voice coil 22, where the diaphragm 21 may be sandwiched between the two side walls 33, or the diaphragm 21 is connected to the side wall 33, which is not limited herein.

In the present embodiment, the at least three first magnetic members 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 form a strong magnetic field, so that the diaphragm 21 and the sound 22 of the vibration system 2 are located in the strong magnetic field strength, the magnetic induction lines at the diaphragm 21 are uniformly distributed, the change 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 high-pitched sound effect is improved. Optionally, the first magnetic circuit portion 41 includes three, five or more first magnetic members 412, which are not limited herein.

It will be appreciated that the first magnetic circuit portion 41 includes a plurality of first magnetic elements 412, and that the plurality of first magnetic elements 412 may also form an array of halbach magnetic elements. 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 having a higher magnetic field strength, which is not limited herein.

In some alternative embodiments of the present invention, the magnetic circuit system 4 is disposed in the installation space 11 and opposite to and spaced from the two voice coils 22, and the magnetizing direction of the first magnetic element 412 in the first magnetic circuit portion 41 is adjusted, so that the first magnetic element 412 in the first magnetic circuit portion 41 forms a halbach magnetic element array, that is, the magnetism and arrangement rule of the first magnetic element 412 satisfy the halbach array (halbach array).

It can be understood that the halbach magnetic element array can generate a stronger magnetic field, and the two voice coils 22 are driven by the magnetic field generated by the halbach magnetic element array to drive the vibrating diaphragm 21 to vibrate and sound, so that the vibrating diaphragm 21 has the stronger magnetic field, which is beneficial to improving the sensitivity of controlling the vibrating diaphragm 21 to vibrate; in addition, the halbach magnetic element array allows magnetic induction lines at the vibrating diaphragm 21 to be uniformly distributed, and magnetic field change in the vibrating direction of the vibrating diaphragm 21 has good linearity, so that the tone quality of audio output by the loudspeaker 100 can be effectively improved, the sound raising 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 reciprocally in a direction perpendicular to the surface of the diaphragm 21.

In this embodiment, the magnetic circuit system 4 is disposed opposite to the diaphragm 21 and the two voice coils 22, that is, the diaphragm 21 is located in a magnetic field formed by the plurality of first magnetic members 412, so as to generate magnetic force acting on the two voice coils 22 when current is applied to the two voice coils 22, and further drive the diaphragm 21 to vibrate reciprocally in the direction of the magnetic force to generate sound. It will be appreciated that after current is applied to the two voice coils 22, the current flows in opposite directions in the first wire segment 221 and the second wire segment 222 disposed opposite to each other in each voice coil 22.

In this embodiment, the first magnetic element 412 of the magnetic circuit system 4 may be an electromagnet or a permanent magnet, but its magnetism remains unchanged. Any adjacent first magnetic members 412 may be alternatively arranged at intervals, or arranged in a manner of being abutted against each other, or connected by a connecting member, etc., which is not limited herein.

According to the loudspeaker 100, the vibration system 2 is suspended in the installation space 11 of the shell 1 by the support 3 of the magnetic conductive material piece, and the two voice coils 22 are respectively arranged on the upper side and the lower side of the vibrating diaphragm 21, so that the magnetic circuit system 4 arranged in the installation space 11 is opposite to the two voice coils 22 of the vibration system 2 and are arranged at intervals, at least three first magnetic pieces 412 of the magnetic circuit system 4 are utilized to form a magnetic piece array, and a magnetic field with stronger magnetic field strength is generated, so that the vibrating diaphragm 21 and the two voice coils 22 are positioned in the 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 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, by providing the two voice coils 22, the driving force for driving the vibration of the diaphragm 21 is made larger, so that the sensitivity of controlling the vibration of the diaphragm 21 is made higher; as shown in fig. 14, the magnetic flux collecting effect is further achieved by using the support 3 of the magnetic conductive material member, so that the magnetic force lines of the magnetic circuit system 4 at least partially vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 along the horizontal direction, and the magnetic force lines passing through the first wire segment 221 and the second wire segment 222 are opposite in direction, thereby effectively improving the sound quality and the high-pitch effect of the loudspeaker 100.

In an embodiment, the first magnetic members 412 magnetize 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 element 412 of the at least three first magnetic elements 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 elements 412 are opposite, that is, the two first magnetic elements 412 with opposite magnetizing directions are alternately arranged, so as to form a magnetic element array, and generate a magnetic field with a stronger magnetic field strength.

Optionally, the at least three first magnetic elements 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 may also form an halbach array of magnetic elements, so that according to the magnetic field law of the halbach array, the magnetic field of the portion of the surface of the diaphragm 21 corresponding to the first magnetic element 412 is better than the magnetic field of the portion not corresponding to the first magnetic element 412, including the aspects of magnetic field strength, linearity of the magnetic field strength along with the change of the position, and uniformity of distribution of magnetic induction lines.

It will be appreciated that two voice coils 22 may alternatively be provided in the region defined by the orthographic projection of the first magnetic member 412 on the surface of the 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 element 412 on the surface of the diaphragm 21, so that the voice coil 22 is in a more reasonable magnetic field, to alleviate the distortion of the audio output by the speaker 100, and improve the sound quality of the audio output by the speaker 100.

Because the magnetic induction lines in the two adjacent first magnetic pieces 412 are opposite in direction, the directions of the magnetic forces borne by the voice coils 22 corresponding to the two adjacent first magnetic pieces 412 are the same, so that the vibration and sounding of the vibrating diaphragm 21 are facilitated, the proportion of reasonable magnetic places in the magnetic field at the vibrating diaphragm 21 is improved, namely the proportion of the surface of the vibrating diaphragm 21 corresponding to the first magnetic pieces 412 is improved, the rationality of the magnetic field where the vibrating diaphragm 21 is positioned 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 appreciated that the distances from the surfaces of the adjacent first magnetic members 412 adjacent to the diaphragm 21 are 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 the present embodiment, the magnetizing directions of two adjacent first magnetic pieces 412 in the at least three first magnetic pieces 412 of the first magnetic circuit portion 41 are opposite, that is, when the N pole of one first magnetic piece 412 of the two adjacent first magnetic pieces 412 is up and the S pole is down, the N pole of the other first magnetic piece 412 is down and the S pole is up, and vice versa. Of course, in other embodiments, two adjacent first magnetic members 412 are spaced apart such that a horizontal magnetic field is created directly above the spacing.

It should be understood that, in other embodiments, one first magnetic member 412 may be disposed between two adjacent first magnetic members 412 in a lateral direction, that is, the N pole of the first magnetic member 412 located between two adjacent first magnetic members 412 is opposite to and spaced apart from one first magnetic member 412, and the S pole is opposite to and spaced apart from the other first magnetic member 412, which is not limited herein. Alternatively, the two first magnetic members 412 located at two sides of the middle first magnetic member 412 are arranged in a transverse direction, for example, when the N pole of the middle first magnetic member 412 is located at the lower position and the S pole is located at the upper position, the S pole of the two first magnetic members 412 located at two sides of the middle first magnetic member 412 is located at one end close to the middle first magnetic member 412, and the N pole is located at one end far from the middle first magnetic member 412, and vice versa, which is not limited herein.

In an embodiment, the magnetic circuit system 4 further includes a second magnetic circuit portion 42, where the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on opposite sides of the diaphragm 21, the first magnetic circuit portion 41 is disposed opposite to and spaced apart from one voice coil 22, the second magnetic circuit portion 42 is disposed opposite to and spaced apart from the other voice coil 22, and the second magnetic circuit portion 42 includes at least one second magnetic member 421.

As shown in fig. 1, 2 and 10, it can be understood that by providing the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on opposite sides of the vibration system 2, respectively, that is, forming magnetic fields with stronger magnetic field strength on opposite sides of the diaphragm 21, the strength of the magnetic field where the diaphragm 21 is located is further enhanced, so that the sensitivity of controlling the vibration of the diaphragm 21 is further improved, and the sound quality of the audio output by the speaker 100 is improved.

In an embodiment, as shown in fig. 1 and 2, 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 member 421 is opposite to the magnetizing direction of the first magnetic member 412 located at the middle position.

In the present embodiment, by reversing the magnetizing direction of the second magnetic member 421 to the magnetizing direction of the first magnetic member 412 located at the middle position of the first magnetic circuit portion 41, the distribution of the magnetization lines of the magnetic field where the diaphragm 21 is located is made more uniform, and the change of the magnetic field strength in the vibrating direction of the diaphragm 21 has better linearity, so that the performance of the speaker 100 is optimized, and the BL of the speaker 100 is raised by 37.64%.

In one embodiment, as shown in fig. 8 and 9, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on opposite sides of the voice coil 22, that is, the first magnetic circuit portion 41 is disposed opposite to and spaced apart from one voice coil 22, and the second magnetic circuit portion 42 is disposed opposite to and spaced apart from the other voice coil 22. The number of the second magnetic pieces 421 is the same as the number of the first magnetic pieces 412, and the magnetizing directions of the first magnetic pieces 412 and the second magnetic pieces 421, which are vertically corresponding, are opposite.

In this embodiment, by disposing the second magnetic circuit portion 42 and the first magnetic circuit portion 41 on opposite sides of the vibration system 2, and making the magnetizing directions of the first magnetic element 412 in the first magnetic circuit portion 41 and the magnetizing directions of the second magnetic element 421 in the second magnetic circuit portion 42 that correspond up and down opposite to each other, that is, making the magnetic fields generated by the magnetic element arrays on the two side surfaces of the diaphragm 21 symmetrical, the distribution of the induction lines of the magnetic field where the diaphragm 21 is located is more uniform, and the change of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity.

Alternatively, the first magnetic circuit portion 41 and the second magnetic circuit portion 42 located on opposite sides of the vibration system 2 may form halbach magnetic element arrays, respectively. Of course, in other embodiments, the first magnetic circuit portion 41 and the second magnetic circuit portion 42 located on opposite sides of the vibration system 2 may also form other magnetic element arrays, which are 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 form halbach magnetic element arrays on two side surfaces of the diaphragm 21, respectively, 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 intermediate to 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 speaker 100 is improved by 37.12% by changing the different magnetizing directions of the second magnetic circuit portion 42 and the first magnetic circuit portion 41 on opposite sides of the vibration system 2.

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, the first magnetic members 412 located at the middle position of the three first magnetic members 412 are magnetized downward in the vertical direction, and the first magnetic members 412 located at both ends are magnetized in the horizontal direction and in the direction away from the middle first magnetic member 412, respectively. As shown in fig. 7, the first magnetic members 412 located at the middle position of the three first magnetic members 412 are magnetized upward in the vertical direction, and the first magnetic members 412 located at both ends are magnetized in the horizontal direction and toward the direction close to the middle first magnetic member 412, respectively.

In the present embodiment, the magnetic element group 411 includes three first magnetic elements 412, for example, a middle first magnetic element 412 and adjacent first magnetic elements 412 on two sides of the middle first magnetic element 412, and the halbach magnetic element array is formed by adjusting magnetizing directions of the three first magnetic elements 412 in the magnetic element group 411. It will be appreciated that by setting the magnetization direction of the three first magnetic pieces 412 such that the first magnetic pieces 412 located at the intermediate position are magnetized downward in the vertical direction, the first magnetic pieces 412 located at both ends are respectively magnetized in the horizontal and the directions away from the intermediate first magnetic pieces 412, thereby generating a magnetic field constituted by loops of alternating polarity which emanate from the intermediate first magnetic pieces 412, curve along the paths above the first magnetic pieces 412 polarized in the +and-X directions, and finally return to the first magnetic pieces 412 on the outermost portions of the array.

In an embodiment, as shown in fig. 12, the magnetic member group 411 includes five first magnetic members 412 arranged along a horizontal direction, the first magnetic member 412 located at the middle position is magnetized downward along a vertical direction, the two first magnetic members 412 located at the two ends are magnetized upward along a vertical direction, and the two first magnetic members 412 located at the two sides of the first magnetic member 412 located at the middle position are magnetized along a direction which is horizontal and faces away from the first magnetic member 412 located at the middle position, respectively.

It will be appreciated that the magnetic element group 411 includes three, five or more first magnetic elements 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 elements 412 in the magnetic element group 411. By setting the magnetizing directions of the five first magnetic pieces 412 to be the first magnetic pieces 412 located at the intermediate position to be magnetized downward in the vertical direction, the two first magnetic pieces 412 located at both ends are magnetized upward in the vertical direction, and the two or more first magnetic pieces 412 located at both sides of the first magnetic piece 412 located at the intermediate position are respectively magnetized in the directions horizontally and toward the first magnetic pieces 412 located away from the intermediate position, thereby generating a magnetic field constituted by alternating polarity loops, which are sent from the intermediate first magnetic pieces 412, are bent along the path above the first magnetic pieces 412 polarized in the +and-X directions, and finally returned to the first magnetic pieces 412 on the outermost part of the array.

In an embodiment, as shown in fig. 1, 2, 5, 6, 7 and 10, the magnetic circuit system 4 further includes a second magnetic circuit portion 42, where the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are disposed on opposite sides of the voice coil 22, respectively, and the second magnetic circuit portion 42 includes a second magnetic member 421, and a magnetizing direction of the second magnetic member 421 is opposite to a magnetizing direction of the first magnetic member 412 located at the middle position.

It can be understood that the magnetic fields generated by the first magnetic circuit portion 41 and the second magnetic circuit portion 42, that is, the magnetic element arrays on the two sides of the diaphragm 21 are symmetrical, so as to further enhance the intensity of the magnetic field in which the diaphragm 21 is located, thereby further enhancing the sensitivity of controlling the vibration of the diaphragm 21 and improving the sound quality of the audio output by the speaker 100.

It will be appreciated that, by the above arrangement, 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 are adjusted so that the second magnetic circuit portion 42 and the first magnetic circuit portion 41 form halbach magnetic member arrays on both side surfaces of the diaphragm 21, respectively, which is not limited herein.

Fig. 14 shows the simulation results of the magnetic field distribution of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 respectively disposed on both sides of the diaphragm 21 in the embodiment of the present invention. It is obvious that the magnetic induction lines between the magnetic fields on the two side surfaces of the diaphragm 21 are most densely distributed and the magnetic field is strongest, namely the magnetic field environment where the diaphragm 21 is positioned; and the magnetic induction lines between the first magnetic part 412/the second magnetic part 421 of the magnetic field on both sides are flat and uniformly distributed, meaning that the magnetic field intensity distribution between the first magnetic part 412/the second magnetic part 421 of the magnetic field on both sides is uniform and symmetrical, so the voice coil 22 is optionally disposed in the area defined by the orthographic projection of the first magnetic part 412 on the surface of the diaphragm 21.

In an embodiment, the first magnetic circuit portion 41 further includes a third magnetic member 413, the third magnetic member 413 is disposed at two ends of the magnetic member group 411, and an extending direction of the third magnetic member 413 is perpendicular to an extending direction of the first magnetic member 412.

It can be understood that, as shown in fig. 10 and 11, by disposing the third magnetic members 413 at two ends of the magnetic member group 411 respectively, the extending direction of the third magnetic member 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 reinforced by the third magnetic member 413, so that the voice coil 22 corresponding to the third magnetic member 413 is subjected to the magnetic force generated by the third magnetic member 413, and further the vibration of the diaphragm 21 is controlled to reciprocate, so as to improve the sensitivity of the vibration of the diaphragm 21.

In an embodiment, as shown in fig. 8 and 9, the magnetic circuit system 4 further includes a second magnetic circuit portion 42, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on two opposite sides of the voice coil 22, the second magnetic circuit portion 42 includes second magnetic pieces 421, the number of the second magnetic pieces 421 is the same as that of the first magnetic pieces 412, and magnetizing directions of the first magnetic pieces 412 and the second magnetic pieces 421, which are vertically corresponding, are symmetrically disposed on a plane where the voice coil 22 is located.

It can be appreciated that, by the above arrangement, the second magnetic circuit portion 42 and the first magnetic circuit portion 41 respectively form halbach magnetic element arrays on two side surfaces of the diaphragm 21, which is beneficial to alleviating the second harmonic distortion and the third harmonic distortion of the diaphragm 21, further alleviating the distortion of the audio output by the speaker 100, and improving the tone 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 intermediate to 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 one embodiment, a connecting member 414 is disposed between two adjacent first magnetic members 412 to define an assembly gap 415 between the two first magnetic members 412.

As shown in fig. 1, 2 and 5 to 9, by providing the connecting member 414 between the adjacent two first magnetic members 412, the first magnetic members 412 are fixed by the connecting member 414 to ensure that the relative positional relationship of 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 for defining the assembly gap 415 between the two first magnetic pieces 412, so that on one hand, the assembly gap 415 is used for conveniently assembling the first magnetic circuit part 41, and on the other hand, the assembly gap 415 can be used for reducing the obstruction of a magnetic field to air flow, so that the loudspeaker 100 has good air compliance, the tone quality of 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 appreciated that the two adjacent first magnetic members 412 may also be disposed at intervals, so that an airflow channel is formed between the two adjacent first magnetic members 412 to allow airflow to circulate in the magnetic field, thereby reducing the obstruction of the magnetic field to the airflow, and enabling the speaker 100 to have good air compliance, so as to further alleviate distortion of the audio output by the speaker 100, and improve the tone quality and the high-pitched sound effect of the audio output by the speaker 100.

Of course, in other embodiments, the two adjacent first magnetic members 412 may be fixed in position relative to each other by gluing, mechanical pressing, and fixing to an external structure such as a bracket, so that the relative positional relationship between the first magnetic circuit portion 41 and the second magnetic circuit portion 42 on the two sides of the diaphragm 21 and the diaphragm 21 is also ensured to be fixed, which is not limited herein.

Optionally, the spacing between any adjacent two first magnetic elements 412 is uniform. Of course, in other embodiments, the first magnetic member 412 may be configured in a ring-like magnetic structure, which is not limited herein. The first magnetic member 412/second magnetic member 421 of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 may also be provided as sheets of magnetic material, for example different areas of powdered ferrite in an adhesive being exposed to different magnetic fields for magnetization. Alternatively, the first magnetic member 412/second magnetic member 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 planar magnetic array with a rotating magnetic field, without limitation.

In one embodiment, as shown in fig. 10 to 12, two adjacent first magnetic members 412 are disposed in abutment. It is to be understood that the two adjacent first magnetic members 412 may be fixed by gluing or mechanical pressing, which is not limited herein. Of course, the two adjacent second magnetic members 421 of the second magnetic circuit portion 42 may be fixed by gluing or mechanical pressing, which is not limited herein.

In an embodiment, the support 3 is formed as a hollow frame structure, the top of the support 3 is connected to the inner wall of the housing 1, the second magnetic circuit portion 42 is located in the support 3, the bottom of the support 3 is provided with the avoidance opening 31, the diaphragm 21 is connected to the bottom of the support 3, and a voice coil 22 is located in the avoidance opening 31.

In the present embodiment, as shown in fig. 1 to 4, by providing the bracket 3 in a hollow frame structure such that the top of the bracket 3 is connected to the inner wall of the housing 1, the second magnetic circuit portion 42 is defined by the hollow frame of the bracket 3, so that the bracket 3 of the magnetically conductive material member can play a magnetism collecting role on the second magnetic circuit portion 42 in the hollow frame, thereby further increasing the magnetic field strength of the second magnetic circuit portion 42 acting on the diaphragm 21 and the voice coil 22.

It can be appreciated that the avoidance port 31 is formed at the bottom of the bracket 3, so that the avoidance port 31 can be utilized to provide an avoidance space for the voice coil 22, and the voice coil 22 is enabled to be conveniently affected by the magnetic force of the first magnetic circuit portion 41. Of course, in other embodiments, both voice coils 22 may be disposed in the relief port 31, and in this case, the two voice coils 22 are subjected to the magnetic forces of the first magnetic circuit portion 41 and the second magnetic circuit portion 42, respectively, which is not limited herein.

In the present embodiment, in order to ensure a gap between the voice coil 22 and the first magnetic circuit portion 41 while avoiding abutment of the holder 3 with the first magnetic circuit portion 41, the holder 3 has the side wall 33 facing the voice coil side, and the side wall 33 is at least partially overlapped with the projection of the outer wall of the voice coil 22 in the horizontal direction, that is, the bottom portion of the holder 3 protrudes from the surface of the voice coil 22 facing the first magnetic circuit portion 41 side, whereby the magnetism collecting effect of the holder 3 can be enhanced. Further, the projection of the side wall 33 and the outer wall of the voice coil 22 in the horizontal direction is completely overlapped.

In one embodiment, the bracket 3 is provided with a horizontally extending horizontal connecting portion 32, a side wall 33 is arranged on the side of the horizontal connecting portion 32 facing the voice coil, and the bottom of the horizontal connecting portion 32 is abutted against the first magnetic circuit portion 41.

It will be appreciated that, as shown in fig. 1 to 4, by providing the horizontally extending horizontal connection portion 32 at the bottom of the bracket 3, the diaphragm 21 is connected with the horizontal connection portion 32, and the mounting stability of the diaphragm 21 is further improved. At this time, the side of the horizontal connection portion 32 facing the voice coil is the side wall 33, that is, the projection of the side wall 33 and the outer wall of the voice coil 22 in the horizontal direction at least partially overlaps, so that a gap between the voice coil 22 and the first magnetic circuit portion 41 can be ensured when the bottom of the horizontal connection portion 32 is stopped against the first magnetic circuit portion 41.

Meanwhile, due to the arrangement of the horizontal connecting portion 32, when the bracket 3 is installed in the installation space 11 of the shell 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 effect of convenient assembly and improvement of assembly precision can be achieved. It will be appreciated that the bracket 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 fitting height of the bracket 3. By providing the bottom of the horizontal connecting portion 32 to stop against the first magnetic circuit portion 41, it is possible to facilitate control of the mounting tolerances of the bracket 3 and the voice coil 22, and to improve the assembly efficiency and the assembly accuracy.

Optionally, the material of the bracket 3 may be SPCC, so that the magnetic permeability is improved, and the BL value of the speaker 100 is increased, which is not limited herein.

Fig. 14 shows the simulation results of the magnetic field distribution of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 respectively disposed on both sides of the diaphragm 21 in the embodiment of the present invention. It can be seen that the bracket 3 of the magnetic conductive material member is utilized, and the horizontal connecting portion 32 extending horizontally is arranged on the bracket 3, so that the magnetism collecting effect of the magnetic field where the voice coil 22 is located is further improved by utilizing the horizontal connecting portion 32.

In one embodiment, the diaphragm 21 is a single layer of metallic 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 be made of a single-layer film material such as PET (polyester film), PEEK (polyether ether ketone), PAR (polyarylate), PI (polyimide), and the like, which is not limited herein.

Because the diaphragm 21 made of the single-layer film material is either too hard and brittle, the surface of the diaphragm 21 is uneven when the tension is small, and the diaphragm 21 is too tight when the tension is large, so that the diaphragm is easy to break; or too soft, the surface tension of the diaphragm 21 is insufficient and because the diaphragm 21 is too easily stretched, the tension becomes smaller and 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 trailing edge characteristic of the transient characteristic of the diaphragm 21 is poor, that is, when the vibration coil stops being energized, the diaphragm 21 needs to delay for a longer time to stop vibrating due to the excessively small internal damping. In one embodiment, the diaphragm 21 is formed as a composite layer structure, and at least the surface connected to the voice coil 22 is made of a metal material.

It will be appreciated that by providing the diaphragm 21 as a composite layer structure, the diaphragm 21 is provided with good support and sufficient rigidity. In this 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 perform a good supporting function and provide sufficient rigidity, and other composite structures of the diaphragm 21 are used to 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 this embodiment, the diaphragm 21 includes a first sub-diaphragm and a second sub-diaphragm, where the first sub-diaphragm can play a good supporting role 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 selected from metal materials, such as aluminum plate, etc., and the material of the second sub-diaphragm may be selected from PEEK (polyetheretherketone), PAR (polyarylate), TPU (thermoplastic polyurethane elastomers), TPE (Thermoplastic Elastomer, thermoplastic elastomers), etc. 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, and the bonding 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 arranging the voice coil 22 in a square configuration such that the voice coil 22 includes a first straight edge and a second straight edge that are sequentially connected, i.e., the first wire segment 221 and the second wire segment 222 of the voice coil 22 are respectively two opposite first straight edges or two second straight edges, the arrangement is such that the voice coil 22 effectively increases magnetic flux relative to a conventional racetrack voice coil.

In one embodiment, the number of the voice coils 22 is two, and the two voice coils 22 are disposed on the upper and lower sides of the diaphragm 21.

It will be appreciated that the voice coil 22 may be formed by printing, or vapor deposition, or 3D printing on the surface of the diaphragm 21. The voice coil 22 may be provided on only one surface of the diaphragm 21, or the voice coil 22 may be provided on both side surfaces of the diaphragm 21, which is not limited herein.

By applying current to the voice coil 22, the diaphragm 21 is driven to vibrate in a predetermined direction to generate sound, wherein the direction of the magnetic force applied to the voice coil 22 is changed continuously by changing the current flow direction in the voice coil 22, so as to control the diaphragm 21 to vibrate reciprocally. It will be appreciated that the greater the number of voice coils 22, the greater the driving force that drives the vibration of the diaphragm 21, and the greater the sensitivity of controlling the vibration of the diaphragm 21. However, the dimensions of the surface of the diaphragm 21 and the product specifications of the speaker 100 are also considered, and are not limited thereto.

In the present embodiment, the wire material of the voice coil 22 may be 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 provided receives the magnetic force, and the portion where the voice coil 22 is not provided receives the magnetic force, the portion of the surface of the diaphragm 21 where the voice coil 22 is provided and the portion where the voice coil 22 is not provided exhibit different divided vibrations, i.e., the vibration amplitude of the portion of the surface of the diaphragm 21 where the voice coil 22 is provided is larger than that of the portion where the voice coil 22 is not provided. In this way, the peak-valley of the frequency response curve of the speaker 100 will be generated, so that the audio output by the speaker 100 will be distorted, which eventually results in the degradation of the acoustic performance of the speaker 100.

In view of this, the vibration system 2 further includes a reinforcing portion 23, where the reinforcing portion 23 is disposed on the surface of the diaphragm 21, and 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 uniform vibration amplitude as much as possible, and the diaphragm 21 exhibits an overall piston vibration.

Alternatively, the shape of the reinforcing portion 23 may be circular, and of course, the shape of the reinforcing portion 23 may be a bar, a comb, or the like. In an embodiment, the diaphragm 21 is provided with a plurality of reinforcing portions 23, and the extending direction of the reinforcing portions 23 intersects with the voice coil 22, optionally perpendicular, so as to form a cross grid shape, and the voice coil 22 can also play a role of reinforcing the overall rigidity of the surface of the diaphragm 21, and the voice coil 22 and the reinforcing portions 23 together reinforce 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 opposite sides of the diaphragm 21, which is not limited herein.

According to the loudspeaker 100, the magnetic circuit part is arranged on at least one side of the vibration system 2 to form the magnetic field with stronger magnetic field intensity, so that the vibrating diaphragm 21 is positioned in the stronger magnetic field intensity, the magnetic induction lines at the vibrating diaphragm 21 are uniformly distributed, the change of the magnetic field intensity 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 meanwhile, the distortion condition of the audio output by the loudspeaker 100 can be relieved to a certain extent. In addition, by arranging the support 3, the vibration system 2 is suspended in the installation space 11 of the shell 1 by using the support 3, and the support 3 is arranged as a magnetic conduction material piece, on one hand, the support 3 is used for providing stability for the installation of the vibration system 2 so as to improve the sensitivity of the vibrating diaphragm 21; on the other hand, the side wall 33 facing one side of the voice coil of the bracket 3 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 piece is utilized to realize the magnetic focusing effect, so that the magnetic force lines generated by the magnetic circuit system 4 vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 along the horizontal direction, and the magnetic force lines passing through the first wire segment 221 and the second wire segment 222 are opposite in direction, thus the magnetic induction lines at the vibrating diaphragm 21 are uniformly distributed, the magnetic field change in the vibrating direction of the vibrating 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 high-pitch effect of the audio output by the loudspeaker 100 are improved.

The invention also proposes an electronic device comprising a device body and a speaker 100. The specific structure of the speaker 100 refers to the foregoing embodiments, and since the electronic device adopts all the technical solutions of all the foregoing embodiments, at least the beneficial effects of the technical solutions of the foregoing embodiments are all provided, and will not be described in detail herein.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A loudspeaker, the loudspeaker comprising:

a housing defining an installation space therein;

The support is a magnetic conduction material piece and is connected with the vibrating diaphragm to suspend the vibration system in the installation space, the support is provided with a side wall facing one side of the voice coil, the side wall at least partially overlaps with the projection of the voice coil along the horizontal direction, the support is provided with a horizontal connecting part extending horizontally, and one side of the horizontal connecting part facing the voice coil is the side wall; a kind of electronic device with high-pressure air-conditioning system

The magnetic circuit system is arranged in the installation space, the magnetic circuit system is opposite to the voice coil and is arranged at intervals, the magnetic circuit system comprises a first magnetic circuit part, the bottom of the horizontal connecting part is abutted to the first magnetic circuit part, the first magnetic circuit part comprises at least three first magnetic parts, and magnetic force lines of the magnetic circuit system at least partially vertically penetrate through the first wire section and the second wire section along the horizontal direction and penetrate through the first wire section and the second wire section in opposite magnetic force line directions.

2. The loudspeaker of claim 1, wherein the first magnetic members are magnetized in a vertical direction, and wherein adjacent ones of the first magnetic members are magnetized in opposite directions.

3. The loudspeaker of claim 1, wherein the first magnetic circuit portion comprises a set of magnetic pieces;

4. A loudspeaker according to claim 3, wherein the first magnetic circuit portion further comprises third magnetic members provided at both ends of the magnetic member group, and the extending direction of the third magnetic members is perpendicular to the extending direction of the first magnetic members.

5. The loudspeaker of any one of claims 1 to 4, wherein the magnetic circuit further comprises a second magnetic circuit portion, the second magnetic circuit portion and the first magnetic circuit portion being disposed on opposite sides of the diaphragm, respectively, the first magnetic circuit portion being disposed opposite and spaced from one of the voice coils, the second magnetic circuit portion being disposed opposite and spaced from the other voice coil, the second magnetic circuit portion comprising at least one second magnetic member.

6. The loudspeaker of claim 5, wherein the second magnetic element is one, and wherein the second magnetic element has a magnetization direction opposite to a magnetization direction of the first magnetic element at the intermediate position.

7. The speaker of claim 5, wherein the number of second magnetic elements is the same as the number of first magnetic elements;

8. The loudspeaker of claim 5, wherein the support is formed into a hollow frame structure, the top of the support is connected to the inner wall of the housing, the second magnetic circuit portion is located in the support, the bottom of the support is provided with an avoidance opening, the diaphragm is connected to the bottom of the support, and one of the voice coils is located in the avoidance opening.

9. The loudspeaker of any one of claims 1 to 4, wherein a connecting member is provided between two adjacent first magnetic members to define an assembly gap between the two first magnetic members;

or, two adjacent first magnetic pieces are arranged in a leaning way.

10. The loudspeaker of any one of claims 1 to 4, wherein the diaphragm is a single layer piece of metallic material;

11. The speaker of any one of claims 1 to 4, wherein the voice coil is formed in a square shape.

12. An electronic device comprising a loudspeaker according to any of claims 1 to 11.