CN114449421B

CN114449421B - Speaker and electronic device

Info

Publication number: CN114449421B
Application number: CN202210114193.8A
Authority: CN
Inventors: 李震
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2024-04-09
Anticipated expiration: 2042-01-30
Also published as: CN114449421A

Abstract

The invention discloses a loudspeaker and an electronic device. The loudspeaker comprises a basin frame, a magnetic circuit system, a first vibration system and a second vibration system; the magnetic circuit system is fixed in the basin frame, a first magnetic gap and a second magnetic gap are formed on one end face of the magnetic circuit system, and a third magnetic gap and a fourth magnetic gap are formed on the other end face of the magnetic circuit system; the first vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a first voice coil and a second voice coil, wherein the first voice coil is connected with the first vibrating diaphragm and is inserted into the first magnetic gap, the second vibrating diaphragm surrounds the first vibrating diaphragm, and the second voice coil is connected with the second vibrating diaphragm and is inserted into the second magnetic gap; the second vibration system comprises a third vibrating diaphragm, a fourth vibrating diaphragm, a third voice coil and a fourth voice coil, wherein the third voice coil is connected with the third vibrating diaphragm and inserted into the third magnetic gap, the fourth vibrating diaphragm surrounds the outside of the third vibrating diaphragm, and the fourth voice coil is connected with the fourth vibrating diaphragm and inserted into the fourth magnetic gap. The invention can better meet the requirements of various small electronic devices on sound quality.

Description

Speaker and electronic device

Technical Field

The invention relates to the technical field of electroacoustic transduction, in particular to a loudspeaker and electronic equipment using the loudspeaker.

Background

With the improvement of the living standard of people and the development of speaker technology, the expectations and requirements of people on the sound quality of electronic equipment are higher and higher. The performance of the loudspeaker as a transducer for converting an electrical signal into an acoustic signal largely determines the level of sound quality. Currently, more and more small electronic devices have higher and higher requirements for sound quality. However, it is limited by a small internal space, and it is difficult for the speakers to satisfy both low-frequency and high-frequency requirements of sound quality.

Disclosure of Invention

The invention mainly aims to provide a loudspeaker and electronic equipment using the loudspeaker, and aims to better meet the requirements of various small electronic equipment on sound quality.

To achieve the above object, an embodiment of the present invention provides a speaker, which:

a basin stand;

the magnetic circuit system is fixed in the basin frame and provided with two end faces which are arranged in a back-to-back mode, a first magnetic gap and a second magnetic gap which are mutually spaced are formed on one end face of the magnetic circuit system, the first magnetic gap is positioned on the inner side of the second magnetic gap, a third magnetic gap and a fourth magnetic gap which are mutually spaced are formed on the other end face of the magnetic circuit system, and the third magnetic gap is positioned on the inner side of the fourth magnetic gap;

The first vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a first voice coil and a second voice coil, wherein the first vibrating diaphragm is covered on the basin frame and is opposite to the first magnetic gap, the first voice coil is connected with the first vibrating diaphragm and is inserted into the first magnetic gap, the second vibrating diaphragm surrounds the first vibrating diaphragm, is covered on the basin frame and is opposite to the second magnetic gap, and the second voice coil is connected with the second vibrating diaphragm and is inserted into the second magnetic gap; and

the second vibration system comprises a third vibrating diaphragm, a fourth vibrating diaphragm, a third voice coil and a fourth voice coil, wherein the third vibrating diaphragm is covered on the basin frame and is opposite to the third magnetic gap, the third voice coil is connected with the third vibrating diaphragm and is inserted into the third magnetic gap, the fourth vibrating diaphragm surrounds the third vibrating diaphragm, covers the outside of the third vibrating diaphragm and is arranged on the basin frame and is opposite to the fourth magnetic gap, and the fourth voice coil is connected with the fourth vibrating diaphragm and is inserted into the fourth magnetic gap.

In one embodiment of the invention, the basin stand comprises a cylindrical body part, wherein the cylindrical body part is provided with a first end and a second end, and the first end and the second end are both arranged in an opening way;

The magnetic circuit system is fixed in the cylinder body, the first magnetic gap and the second magnetic gap are arranged towards the opening of the first end, and the third magnetic gap and the fourth magnetic gap are arranged towards the opening of the second end;

the basin stand further comprises a first supporting ring and a second supporting ring, the first supporting ring is convexly arranged on the end face of the magnetic circuit system, on which the first magnetic gap and the second magnetic gap are formed, and is arranged on the outer side of the first magnetic gap in a surrounding mode, the outer edge of the first vibrating diaphragm is fixed to one end, deviating from the magnetic circuit system, of the first supporting ring, the inner edge of the second vibrating diaphragm is fixed to one end, deviating from the magnetic circuit system, of the first supporting ring, and the outer edge of the second vibrating diaphragm is fixed to the first end;

the second support ring is arranged on the end face of the magnetic circuit system, on which the third magnetic gap and the fourth magnetic gap are formed, and surrounds the outer side of the third magnetic gap, the outer edge of the third vibrating diaphragm is fixed on one end of the second support ring, which is away from the magnetic circuit system, the inner edge of the fourth vibrating diaphragm is fixed on one end of the second support ring, which is away from the magnetic circuit system, and the outer edge of the fourth vibrating diaphragm is fixed on the second end.

In an embodiment of the present invention, a first rear cavity is formed by enclosing the second diaphragm, the cylinder, the first support ring and the magnetic circuit system, and a first pressure relief hole communicating with the first rear cavity is formed at the first end;

the fourth vibrating diaphragm, the cylinder body, the second supporting ring and the magnetic circuit system are enclosed to form a second rear cavity, and a second pressure relief hole communicated with the second rear cavity is formed in the second end.

In an embodiment of the invention, the basin stand further comprises a first extension part formed by extending the first end outwards and a second extension part formed by extending the second end outwards, and the first extension part and the second extension part are used for fixing the basin stand.

In an embodiment of the invention, the second diaphragm is in a flat plate structure;

and/or, the fourth vibrating diaphragm is in a flat plate structure.

In an embodiment of the present invention, the first diaphragm and the second diaphragm are of an integral structure;

and/or the third vibrating diaphragm and the fourth vibrating diaphragm are of an integrated structure.

In an embodiment of the invention, the magnetic circuit system includes:

an inner magnetic circuit portion;

an intermediate magnetic circuit portion, which is disposed around the inner magnetic circuit portion and is spaced apart from the inner magnetic circuit portion to form the first magnetic gap and the third magnetic gap; and

And an outer magnetic circuit portion surrounding the intermediate magnetic circuit portion and spaced apart from the intermediate magnetic circuit portion to form the second magnetic gap and the fourth magnetic gap.

In an embodiment of the invention, the inner magnetic circuit portion includes a first magnetically permeable plate, a first magnet, and a second magnetically permeable plate; wherein the first magnet is clamped between the first magnetic conduction plate and the second magnetic conduction plate;

the middle magnetic circuit part comprises a third magnetic conduction plate, a second magnet and a fourth magnetic conduction plate; the second magnet is arranged outside the first magnet along the circumference of the first magnet in a surrounding manner and is arranged at intervals with the first magnet; the third magnetic conduction plate and the fourth magnetic conduction plate are respectively overlapped on two surfaces of the second magnet, which are opposite to each other; the third magnetic conduction plate is arranged outside the first magnetic conduction plate along the circumference of the first magnetic conduction plate in a surrounding manner and is arranged at intervals with the first magnetic conduction plate so as to form the first magnetic gap; the fourth magnetic conduction plate is arranged outside the second magnetic conduction plate along the circumference of the second magnetic conduction plate in a surrounding manner and is arranged at intervals with the second magnetic conduction plate so as to form the third magnetic gap;

The outer magnetic circuit part comprises a fifth magnetic conduction plate, a third magnet and a sixth magnetic conduction plate; the third magnet is arranged outside the second magnet along the circumference of the second magnet in a surrounding manner and is arranged at intervals with the second magnet; the fifth magnetic conduction plate and the sixth magnetic conduction plate are respectively overlapped on two surfaces of the third magnet, which are opposite to each other; the fifth magnetic conduction plate is arranged outside the third magnetic conduction plate along the circumference of the third magnetic conduction plate in a surrounding manner and is arranged at intervals with the third magnetic conduction plate so as to form the second magnetic gap; the sixth magnetic conduction plate is arranged outside the fourth magnetic conduction plate along the circumference of the fourth magnetic conduction plate in a surrounding mode, and the sixth magnetic conduction plate and the fourth magnetic conduction plate are arranged at intervals to form the fourth magnetic gap.

In an embodiment of the present invention, the speaker further includes an inner spacer ring and an outer spacer ring, the inner spacer ring being disposed between the first magnet and the second magnet to isolate the first magnetic gap from the third magnetic gap so that a rear cavity of the first diaphragm and a rear cavity of the third diaphragm are independent from each other;

the outer isolating ring is arranged between the second magnet and the third magnet to isolate the second magnetic gap from the fourth magnetic gap, so that the rear cavity of the second vibrating diaphragm and the rear cavity of the fourth vibrating diaphragm are mutually independent.

To achieve the above object, an embodiment of the present invention also proposes an electronic device including a speaker including:

a basin stand;

The technical scheme of the invention is equivalent to providing a novel loudspeaker scheme that two sets of vibration systems are mutually independent and share one set of magnetic circuit system, and the novel loudspeaker scheme is not limited to the shape of the magnetic circuit system and can be in various forms such as a round form, a rectangular form, a runway form and the like. The novel loudspeaker scheme is characterized in that each set of vibration system is provided with two parts, namely a high-frequency vibration part (for example, a part formed by a first vibrating diaphragm and a first voice coil) and a low-frequency vibration part (for example, a part formed by a second vibrating diaphragm and a second voice coil), which share one set of magnetic circuit system for driving, but the high-frequency vibration part and the low-frequency vibration part are independent and do not influence each other, so that the sound wave radiation of the high-frequency vibration part and the sound wave radiation of the low-frequency vibration part are independent and do not influence each other, and pure high-frequency sound signals and low-frequency sound signals can be provided. Therefore, the requirements of various small electronic devices on sound quality can be better met, and the requirements of the small electronic devices on sound quality with good high frequency and good low frequency can be met.

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 a schematic structural diagram of an embodiment of a speaker according to the present invention;

fig. 2 is a schematic structural diagram of the magnetic circuit system in fig. 1.

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.

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 the description of the present invention, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

Aiming at the technical problems mentioned in the background art, the invention provides a loudspeaker, which aims to better meet the requirements of various small electronic devices on sound quality.

It will be appreciated that the speaker proposed by the present invention can be applied to various types of small electronic devices, such as: a cell phone, tablet, television, display, notebook, digital photo frame, personal digital assistant (Personal Digital Assistant, PDA), electronic book reader, MP3 (moving picture experts compression standard audio layer 3,Moving Picture Experts Group Audio Layer III) player, MP4 (moving picture experts compression standard audio layer 4,Moving Picture Experts Group Audio Layer IV) player, wearable device, navigator, palm game, virtual reality device, augmented reality device, desktop speakers, etc. In addition, the speaker provided by the invention can also be applied to various middle-or large-sized electronic devices, and will not be described in detail herein.

The following describes a specific structure of a speaker according to the present invention in a specific embodiment:

as shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the speaker 100 includes:

a basin stand 10;

a magnetic circuit system 30, wherein the magnetic circuit system 30 is fixed in the basin frame 10 and has two opposite end surfaces, a first magnetic gap 30a and a second magnetic gap 30b are formed on one end surface of the magnetic circuit system 30 and are spaced from each other, the first magnetic gap 30a is located inside the second magnetic gap 30b, a third magnetic gap 30c and a fourth magnetic gap 30d are formed on the other end surface of the magnetic circuit system 30 and are spaced from each other, and the third magnetic gap 30c is located inside the fourth magnetic gap 30 d;

the first vibration system 50, the first vibration system 50 includes a first diaphragm 51, a second diaphragm 53, a first voice coil 55, and a second voice coil 57, the first diaphragm 51 is covered on the frame 10 and is disposed opposite to the first magnetic gap 30a, the first voice coil 55 is connected to the first diaphragm 51 and is inserted in the first magnetic gap 30a, the second diaphragm 53 surrounds the first diaphragm 51 and is covered on the frame 10 and is disposed opposite to the second magnetic gap 30b, and the second voice coil 57 is connected to the second diaphragm 53 and is inserted in the second magnetic gap 30 b; and

The second vibration system 70, the second vibration system 70 includes a third diaphragm 71, a fourth diaphragm 73, a third voice coil 75, and a fourth voice coil 77, where the third diaphragm 71 is covered on the frame 10 and is disposed opposite to the third magnetic gap 30c, the third voice coil 75 is connected to the third diaphragm 71 and is inserted into the third magnetic gap 30c, the fourth diaphragm 73 surrounds the third diaphragm 71, is covered on the frame 10, is disposed opposite to the fourth magnetic gap 30d, and the fourth voice coil 77 is connected to the fourth diaphragm 73 and is inserted into the fourth magnetic gap 30 d.

In this embodiment, the speaker 100 is placed horizontally; the magnetic circuit system 30 is fixed by the basin stand 10; at this time, the upper end surface of the magnetic circuit system 30 is formed with a first magnetic gap 30a and a second magnetic gap 30b, and the second magnetic gap 30b is located outside the first magnetic gap 30 a; the lower end surface of the magnetic circuit 30 is formed with a third magnetic gap 30c and a fourth magnetic gap 30d, and the fourth magnetic gap 30d is located outside the third magnetic gap 30 c.

Further, the first vibration system 50 is located above the magnetic circuit system 30, wherein the first vibration film 51 is located at the middle position, the second vibration film 53 surrounds the periphery of the first vibration film 51, and both of them are covered on the basin stand 10 and are opposite to the first magnetic gap 30a and the second magnetic gap 30b respectively; accordingly, the first voice coil 55 is vertically disposed below the first diaphragm 51, is connected to the first diaphragm 51, and is interposed in the first magnetic gap 30 a; the second voice coil 57 is disposed around the periphery of the first voice coil 55 and vertically below the second diaphragm 53, and the second voice coil 57 is connected to the second diaphragm 53 and interposed in the second magnetic gap 30 b. Similarly, the second vibration system 70 is located below the magnetic circuit system 30, wherein the third diaphragm 71 is located at a middle position, the fourth diaphragm 73 surrounds the periphery of the third diaphragm 71, and both of the third and fourth diaphragms are covered on the basin stand 10 and are opposite to the third and fourth magnetic gaps 30c and 30d, respectively; accordingly, the third voice coil 75 is vertically disposed above the third diaphragm 71, is connected to the third diaphragm 71, and is interposed in the third magnetic gap 30 c; the fourth voice coil 77 is disposed around the periphery of the third voice coil 75 and vertically above the fourth diaphragm 73, and the fourth voice coil 77 is connected to the fourth diaphragm 73 and interposed in the fourth magnetic gap 30 d.

At this time, the first vibration system 50 corresponds to a system including two independent separate vibration systems, i.e., a high-frequency vibration system (composed of the first diaphragm 51 and the first voice coil 55) and a low-frequency vibration system (composed of the second diaphragm 53 and the second voice coil 57), to receive signals of different frequency bands, respectively, so as to generate sound waves of different frequency bands, for example: the high frequency vibration system composed of the first diaphragm 51 and the first voice coil 55 may be used to receive a high frequency signal to radiate a high frequency sound wave outwardly, and the low frequency vibration system composed of the second diaphragm 53 and the second voice coil 57 may be used to receive a low frequency signal to radiate a low frequency sound wave outwardly. Similarly, the second vibration system 70 also includes two independent sub-vibration systems, i.e., a set of high-frequency vibration system (formed by the third diaphragm 71 and the third voice coil 75) and a set of low-frequency vibration system (formed by the fourth diaphragm 73 and the fourth voice coil 77), to receive signals of different frequency bands, respectively, so as to generate sound waves of different frequency bands, for example: the high-frequency vibration system composed of the third diaphragm 71 and the third voice coil 75 may be used to receive a high-frequency signal to radiate a high-frequency sound wave outwardly, and the low-frequency vibration system composed of the fourth diaphragm 73 and the fourth voice coil 77 may be used to receive a low-frequency signal to radiate a low-frequency sound wave outwardly.

Therefore, it can be understood that the technical solution of the present embodiment is equivalent to providing a new speaker 100 solution in which two sets of vibration systems are independent from each other and share one set of magnetic circuit system 30, and the new speaker 100 solution is not limited to the shape of the magnetic circuit system 30, and may be in various forms such as a circle, a rectangle, a racetrack, and the like. The embodiment of the novel loudspeaker 100 is characterized in that each set of vibration system has two parts, namely a high-frequency vibration part (for example, a part formed by the first vibrating diaphragm 51 and the first voice coil 55) and a low-frequency vibration part (for example, a part formed by the second vibrating diaphragm 53 and the second voice coil 57), which share one set of magnetic circuit system 30 for driving, but the high-frequency vibration part and the low-frequency vibration part are independent and do not affect each other, so that the sound wave radiation of the high-frequency vibration part and the sound wave radiation of the low-frequency vibration part are independent and do not affect each other, and pure high-frequency sound signals and low-frequency sound signals can be provided. Therefore, the requirements of various small electronic devices on sound quality can be better met, and the requirements of the small electronic devices on sound quality with good high frequency and good low frequency can be met.

In other words, the novel speaker 100 solution provided in the present embodiment has the following advantages:

(1) The novel speaker 100 provided in this embodiment can realize that one magnetic circuit system 30 simultaneously generates two sound effects of low frequency and high frequency, and if the two sound effects are installed in a product, the two sound effects can be realized that the low frequency and the high frequency are simultaneously radiated in one direction and the low frequency and the high frequency are simultaneously radiated in the other direction;

(2) The high-frequency vibration part and the low-frequency vibration part in the same set of vibration system are respectively independent and do not affect each other, so that the requirements of the acoustic equipment on high frequency and low frequency can be better met, and the sound quality of the high frequency and the low frequency can be better restored, thereby solving the problem of insufficient acoustic design of the high frequency and the low frequency caused by a single loudspeaker 100 system in the prior art;

(3) In the prior art, the magnetic circuit system 30 of the speaker 100 is generally configured with only one magnetic gap; however, in the novel speaker 100 solution provided in this embodiment, four magnetic gaps are designed on the magnetic circuit system 30, so as to push the upper two diaphragms and the lower two diaphragms to move simultaneously, and compared with the manner of stacking the two independent low-frequency speakers 100 and the two high-frequency speakers 100, the novel speaker 100 solution provided in this embodiment can greatly reduce the axial size and the radial size of the speaker 100, so that the requirements of various small electronic devices on sound quality can be better met;

(4) If the prior art single speaker 100 system is to compromise both high and low frequency sound effects, the acoustic power will become large and the amplitude will increase. In this way, the reliability risk of the acoustic device is greatly increased, for example: the breakage of the voice coil, rupture of the diaphragm, etc. sometimes occur. The novel speaker 100 scheme provided in this embodiment, even in the same set of vibration system, still adopts the design that the high-frequency vibration part and the low-frequency vibration part are independent and do not affect each other, and compared with the single speaker 100 system, the novel speaker 100 scheme can overcome the trouble caused by power and amplitude improvement;

(5) The rear cavity of the high-frequency vibration part in each set of vibration system is completely closed, so that the pressure of the air in the rear cavity of the high-frequency vibration part can be ensured, the resonance frequency of the high-frequency vibration part can be reduced, the vibration amplitude of the vibration film of the high-frequency vibration part can not be excessively large, and the high-frequency vibration part can be protected from being damaged; on the other hand, the rear cavity of the high-frequency vibration part and the rear cavity of the low-frequency vibration part in each set of vibration system are respectively independent and do not affect each other, so that sound waves generated behind the rear cavity and the rear cavity can not cross talk, and sound energy radiation can not be weakened due to the phase problem of sound radiation;

(6) The novel speaker 100 provided in this embodiment is also beneficial to implementing the coaxial design of the high-frequency vibration part and the low-frequency vibration part in the same set of vibration system, and is beneficial to the coaxial design of two sets of vibration systems, so that the phenomenon of channel separation cannot occur, and the subjective listening experience can be better.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the frame 10 includes a cylindrical body 11, the cylindrical body 11 having a first end 111 and a second end 113, and the first end 111 and the second end 113 are both disposed in an open manner;

the magnetic circuit system 30 is fixed in the cylindrical body 11, the first magnetic gap 30a and the second magnetic gap 30b are disposed toward the opening of the first end 111, and the third magnetic gap 30c and the fourth magnetic gap 30d are disposed toward the opening of the second end 113;

the basin stand 10 further includes a first support ring 13 and a second support ring 15, where the first support ring 13 is convexly disposed on an end surface of the magnetic circuit system 30 where the first magnetic gap 30a and the second magnetic gap 30b are formed, and is enclosed outside the first magnetic gap 30a, an outer edge of the first diaphragm 51 is fixed on one end of the first support ring 13, which is away from the magnetic circuit system 30, an inner edge of the second diaphragm 53 is fixed on one end of the first support ring 13, which is away from the magnetic circuit system 30, and an outer edge of the second diaphragm 53 is fixed on the first end 111;

The second support ring 15 is convexly disposed on the end surface of the magnetic circuit 30, where the third magnetic gap 30c and the fourth magnetic gap 30d are formed, and is disposed around the outside of the third magnetic gap 30c, the outer edge of the third diaphragm 71 is fixed on one end of the second support ring 15, which is away from the magnetic circuit 30, the inner edge of the fourth diaphragm 73 is fixed on one end of the second support ring 15, which is away from the magnetic circuit 30, and the outer edge of the fourth diaphragm 73 is fixed on the second end 113.

In this embodiment, the barrel 11 is disposed vertically, with its first end 111 disposed upward and its second end 113 disposed downward. The magnetic circuit system 30 is fixed in the cylinder 11 and is positioned in the middle of the cylinder 11; the first vibration system 50 is fixed in the cylinder 11 and is located at the upper portion of the cylinder 11; the second vibration system 70 is fixed to the cylindrical body 11 and is located at the lower portion of the cylindrical body 11.

It will be appreciated that, since the high-frequency vibration part and the low-frequency vibration part in the same vibration system need to operate independently, a partition is required between the high-frequency vibration part and the low-frequency vibration part, so as to ensure that the sound waves behind the diaphragms do not affect each other to interfere when the diaphragms move. Therefore, the present embodiment also incorporates a first support ring 13 and a second support ring 15, taking the first support ring 13 as an example:

The first supporting ring 13 is vertically arranged and surrounds the periphery of the first magnetic gap 30a to isolate the first magnetic gap 30a from the second magnetic gap 30 b; at this time, the lower end surface of the first support ring 13 is in sealing connection with the upper end surface of the magnetic circuit system 30, and the upper end of the first support ring 13 extends in a direction away from the magnetic circuit system 30 to support and fix the first diaphragm 51 and the second diaphragm 53. Specifically, the lower end surface of the first support ring 13 and the upper end surface of the magnetic circuit system 30 can be in sealing connection in an adhesive bonding manner, and the outer edge of the first diaphragm 51 and the inner edge of the second diaphragm 53 can be fixed on the first support ring 13 in an adhesive bonding manner so as to improve the isolation of the high-frequency vibration part and the low-frequency vibration part; meanwhile, the stability of the two vibrating diaphragms is improved, and the reliability of the high-frequency vibrating part and the low-frequency vibrating part is improved. The second support ring 15 may be disposed with reference to the first support ring 13, which is not described herein.

It can be understood that under the design of the present embodiment, the basin stand 10 accommodates and fixes the magnetic circuit system 30, the first vibration system 50 and the second vibration system 70 through the cylindrical body 11 thereof, and separates the high-frequency vibration part and the low-frequency vibration part of the two sets of vibration systems through the first support ring 13 and the second support ring 15 thereof, so that the integrity of the speaker 100 is better and the reliability is higher, and each set of vibration system is configured with a corresponding separation to ensure good operation of high frequency and low frequency and no interference with each other, thereby making the high-frequency performance and the low-frequency performance of the speaker 100 more excellent and making the hearing of the user better.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 according to the present invention, a first rear cavity is formed by enclosing the second diaphragm 53, the cylinder 11, the first support ring 13, and the magnetic circuit system 30, and the first end 111 is provided with a first pressure relief hole 1111 that communicates with the first rear cavity;

the fourth diaphragm 73, the cylindrical body 11, the second support ring 15, and the magnetic circuit system 30 enclose to form a second rear cavity, and the second end 113 is provided with a second pressure relief hole 1131 that communicates with the second rear cavity.

It can be appreciated that, under the design of the embodiment, the first rear cavity and the second rear cavity not only maintain their own independence, but also avoid the problem that the acoustic energy radiation is weakened due to the phase problem of the acoustic radiation; and each utilizes the pressure relief holes on the side to realize the communication with the outside:

therefore, the pressure change in the rear cavity of the low-frequency vibration part can be regulated through the pressure relief hole, the influence on the amplitude of the vibrating diaphragm of the low-frequency vibration part due to the overlarge or undersize pressure in the rear cavity of the low-frequency vibration part is avoided, and the influence on the sound sensitivity of the low-frequency vibration part is avoided; that is, resistance when the diaphragm of the low-frequency vibration portion vibrates is reduced, so that the diaphragm of the low-frequency vibration portion can maximally reach the maximum linear displacement, so that the amplitude is increased, and thus, the efficiency of low-frequency radiation is improved.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the second diaphragm 53 has a flat plate structure.

Specifically, the second diaphragm 53 includes a body portion and two folded ring portions; the body part is of a plane ring structure, one ring folding part is connected to the inner edge of the plane ring structure, and the other ring folding part is connected to the outer edge of the plane ring structure; the body portion is connected to the first support ring 13 by a folded ring portion on its inner edge and to the cylindrical body portion 11 by a folded ring portion on its outer edge.

At this time, the diaphragm corresponding to the low frequency vibration part of the first vibration system 50 adopts a flat plate type diaphragm design, so that the diaphragm of the high frequency vibration part can be protected to the greatest extent from being disturbed when radiating high frequency sound outwards (because the high frequency is short, the reflection loss is easy, and the directivity is strong), thereby making the presentation of the high frequency better.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the fourth diaphragm 73 has a flat plate structure.

Specifically, the fourth diaphragm 73 includes a body portion and two folded ring portions; the body part is of a plane ring structure, one ring folding part is connected to the inner edge of the plane ring structure, and the other ring folding part is connected to the outer edge of the plane ring structure; the body portion is connected to the second support ring 15 by a folded ring portion on its inner edge and to the cylinder portion 11 by a folded ring portion on its outer edge.

At this time, the diaphragm corresponding to the low frequency vibration part of the second vibration system 70 is designed as a flat plate type diaphragm, so that the diaphragm of the high frequency vibration part can be protected to the greatest extent from being disturbed when radiating high frequency sound outwards (because the high frequency wave length is short, the reflection loss is easy, and the directivity is strong), thereby making the presentation of the high frequency better.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the first diaphragm 51 and the second diaphragm 53 are integrally formed. At this time, it is equivalent to the first diaphragm 51 and the second diaphragm 53 originating from two different portions of the same large diaphragm—a central portion and a peripheral portion; thus, the first vibration system 50 can be assembled more simply, conveniently and reliably. Whereas the isolation of the central portion from the peripheral portion may be accomplished by an isolating structure, such as a first support ring 13 fixed to the magnetic circuit 30, so as to avoid interference between the two.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 according to the present invention, the third diaphragm 71 and the fourth diaphragm 73 are integrally formed. At this time, the third diaphragm 71 and the fourth diaphragm 73 are equivalent to two different portions, namely a center portion and a peripheral portion, derived from the same larger diaphragm; thus, the second vibration system 70 can be assembled more simply and conveniently with higher reliability. Whereas the isolation of the central portion from the peripheral portion may be accomplished by an isolating structure, such as a second support ring 15 fixed to the magnetic circuit 30, so as to avoid interference between the two.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 according to the present invention, the tub 10 further includes a first extension 17 formed by extending the first end 111 outward and a second extension 19 formed by extending the second end 113 outward, and the first extension 17 and the second extension 19 are used for fixing the tub 10.

It can be understood that, under the design of the present embodiment, the upper end of the basin stand 10 may be fixed with the housing of the electronic device through the first extension 17, and the lower end of the basin stand 10 may be fixed with the housing of the electronic device through the second extension 19; in addition, since the first extension 17 and the second extension 19 are both in a ring-shaped structure, the 'multi-point' or 'full circle' fixing of the upper end of the basin stand 10 and the 'multi-point' or 'full circle' fixing of the lower end of the basin stand 10 can be realized. In this way, the stability of the installation of the basin stand 10 in the electronic device and the stability of the magnetic circuit system 30 can be improved, so that the stability of the magnetic circuit system 30 matched with the first vibration system 50 and the second vibration system 70 can be improved, and the reliability of the loudspeaker 100 can be improved.

The first extension 17 may be fixed to the housing of the electronic device by a fastening means such as a screw, a snap-fit connection, or an adhesive connection. Similarly, the second extension 19 may be fastened to the housing of the electronic device by a fastening means (e.g., a screw) or by a snap-fit connection or an adhesive connection.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the magnetic circuit system 30 includes:

an inner magnetic circuit portion 31;

an intermediate magnetic circuit portion 33, the intermediate magnetic circuit portion 33 being enclosed outside the inner magnetic circuit portion 31 and being spaced apart from the inner magnetic circuit portion 31 to form the first magnetic gap 30a and the third magnetic gap 30c; and

an outer magnetic circuit portion 35, the outer magnetic circuit portion 35 being enclosed outside the intermediate magnetic circuit portion 33 and being spaced apart from the intermediate magnetic circuit portion 33 to form the second magnetic gap 30b and the fourth magnetic gap 30d.

It can be understood that, under the design of the present embodiment, the first magnetic gap 30a and the second magnetic gap 30b are all in a ring shape, and the arrangement of the first magnetic gap 30a and the second magnetic gap 30b is equivalent to the form of sleeving the outer ring on the outer side of the inner ring, that is, the two form of nesting in the horizontal direction; similarly, the third magnetic gap 30c and the fourth magnetic gap 30d are all arranged in a ring shape, and the arrangement of the third magnetic gap 30c and the fourth magnetic gap 30d is equivalent to the form of sleeving an outer ring on the outer side of an inner ring, namely, the two are nested in the horizontal direction. In this way, the magnetic circuit system 30 can be fully utilized in the radial direction, and the height of the magnetic circuit system 30 can be reduced, so that the axial dimension of the loudspeaker 100 can be reduced, and various small electronic devices can be better adapted.

Also, under the design of the present embodiment, the first magnetic gap 30a and the third magnetic gap 30c are symmetrical in position, and can be obtained only by simply enclosing the inner magnetic circuit portion 31 and the intermediate magnetic circuit portion 33; meanwhile, the positions of the second magnetic gap 30b and the fourth magnetic gap 30d are also symmetrical, and the magnetic gap is obtained only by simply enclosing the middle magnetic circuit part 33 and the outer magnetic circuit part 35; therefore, the arrangement of the magnetic circuit system 30 is simpler and more convenient, and the stability and reliability are high.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 of the present invention, the inner magnetic circuit portion 31 includes a first magnetic conductive plate 311, a first magnet 313 and a second magnetic conductive plate 315; wherein the first magnet 313 is sandwiched between the first magnetic conductive plate 311 and the second magnetic conductive plate 315;

the intermediate magnetic circuit portion 33 includes a third magnetic conductive plate 331, a second magnetic body 333, and a fourth magnetic conductive plate 335; wherein the second magnet 333 is circumferentially arranged outside the first magnet 313 along the circumference of the first magnet 313 and is spaced apart from the first magnet 313; the third magnetic conductive plate 331 and the fourth magnetic conductive plate 335 are respectively stacked on two surfaces of the second magnet 333 opposite to each other; the third magnetic conductive plate 331 is disposed around the first magnetic conductive plate 311 along the circumferential direction of the first magnetic conductive plate 311, and is spaced apart from the first magnetic conductive plate 311 to form the first magnetic gap 30a; the fourth magnetic conductive plate 335 is disposed around the second magnetic conductive plate 315 along the circumferential direction of the second magnetic conductive plate 315, and is spaced from the second magnetic conductive plate 315 to form the third magnetic gap 30c;

The outer magnetic circuit portion 35 includes a fifth magnetic conductive plate 351, a third magnet 353, and a sixth magnetic conductive plate 355; wherein the third magnet 353 is disposed around the second magnet 333 along the circumference of the second magnet 333 and spaced apart from the second magnet 333; the fifth magnetic conductive plate 351 and the sixth magnetic conductive plate 355 are respectively stacked on two surfaces of the third magnet 353, which are disposed opposite to each other; the fifth magnetic conductive plate 351 is circumferentially arranged outside the third magnetic conductive plate 331 along the third magnetic conductive plate 331 and is spaced from the third magnetic conductive plate 331 to form the second magnetic gap 30b; the sixth magnetic conductive plate 355 is circumferentially surrounded by the fourth magnetic conductive plate 335, and is spaced apart from the fourth magnetic conductive plate 335 to form the fourth magnetic gap 30d.

It can be understood that, under the design of the present embodiment, the inner side of the first magnetic gap 30a is the inner magnetic circuit portion 31 formed by the first magnetic conductive plate 311, the first magnet 313 and the second magnetic conductive plate 315, so as to provide a powerful magnetic field environment for the first voice coil 55 in the first magnetic gap 30 a; meanwhile, the middle magnetic circuit part 33 formed by the third magnetic conduction plate 331, the second magnetic body 333 and the fourth magnetic conduction plate 335 is arranged outside the first magnetic gap 30a, so that a strong magnetic field environment can be provided for the first voice coil 55 in the first magnetic gap 30 a; in this way, the first voice coil 55 inserted in the first magnetic gap 30a can obtain the driving support of multiple magnets, so as to avoid the problems of insufficient driving capability, high distortion, poor acoustic performance and the like caused by driving by a single magnet, and improve the acoustic performance of the high-frequency vibration part in the first vibration system 50.

Similarly, the inner side of the third magnetic gap 30c is the inner magnetic circuit portion 31 constituted by the first magnetic conductive plate 311, the first magnet 313 and the second magnetic conductive plate 315, which can provide a strong magnetic field environment for the third voice coil 75 in the third magnetic gap 30 c; meanwhile, the intermediate magnetic circuit portion 33 formed by the third magnetic conduction plate 331, the second magnet 333 and the fourth magnetic conduction plate 335 is outside the third magnetic gap 30c, so that a strong magnetic field environment can be provided for the third voice coil 75 in the third magnetic gap 30 c; in this way, the third voice coil 75 inserted in the third magnetic gap 30c can obtain the driving support of multiple magnets, so as to avoid the problems of insufficient driving capability, high distortion, poor acoustic performance and the like caused by driving by a single magnet, and improve the acoustic performance of the high-frequency vibration part in the second vibration system 70.

Meanwhile, the inner side of the second magnetic gap 30b is the intermediate magnetic circuit portion 33 composed of the third magnetic conductive plate 331, the second magnetic body 333 and the fourth magnetic conductive plate 335, which can provide a strong magnetic field environment for the second voice coil 57 in the second magnetic gap 30 b; meanwhile, the outer magnetic circuit portion 35 formed by the fifth magnetic conductive plate 351, the third magnetic body 353 and the sixth magnetic conductive plate 355 is arranged outside the second magnetic gap 30b, so that a strong magnetic field environment can be provided for the second voice coil 57 in the second magnetic gap 30 b; in this way, the second voice coil 57 inserted in the second magnetic gap 30b can obtain the driving support of multiple magnets, so as to avoid the problems of insufficient driving capability, high distortion, poor acoustic performance and the like caused by driving by a single magnet, and improve the acoustic performance of the low-frequency vibration part in the first vibration system 50.

Similarly, inside the fourth magnetic gap 30d is the intermediate magnetic circuit portion 33 constituted by the third magnetic conductive plate 331, the second magnet 333, and the fourth magnetic conductive plate 335, which can provide a strong magnetic field environment for the fourth voice coil 77 in the fourth magnetic gap 30 d; meanwhile, the outer magnetic circuit portion 35 formed by the fifth magnetic conductive plate 351, the third magnetic body 353 and the sixth magnetic conductive plate 355 is arranged outside the fourth magnetic gap 30d, so that a strong magnetic field environment can be provided for the fourth voice coil 77 in the fourth magnetic gap 30 d; in this way, the fourth voice coil 77 inserted in the fourth magnetic gap 30d can obtain the driving support of multiple magnets, so as to avoid the problems of insufficient driving capability, high distortion, poor acoustic performance and the like caused by driving by a single magnet, and improve the acoustic performance of the low-frequency vibration part in the second vibration system 70.

That is, the present embodiment performs the multi-magnet layout on the magnetic circuit system 30, and enhances the driving of the high-frequency vibration part and the low-frequency vibration part in each set of vibration system, so as to avoid the problems of insufficient driving capability, high distortion, poor acoustic performance, etc. caused by the single magnet performing the multi-system multi-part driving, so that the acoustic performance of the speaker 100 is improved.

As shown in fig. 1 and 2, in an embodiment of the speaker 100 according to the present invention, the speaker 100 further includes an inner spacer 90a and an outer spacer 90b, wherein the inner spacer 90a is disposed between the first magnet 313 and the second magnet 333 to isolate the first magnetic gap 30a and the third magnetic gap 30c, so that the rear cavity of the first diaphragm 51 and the rear cavity of the third diaphragm 71 are independent from each other;

the outer spacer ring 90b is disposed between the second magnet 333 and the third magnet 353 to separate the second magnetic gap 30b and the fourth magnetic gap 30d, so that the rear cavity of the second diaphragm 53 and the rear cavity of the fourth diaphragm 73 are independent from each other.

It will be appreciated that the rear cavity of the second diaphragm 53 is the first rear cavity in the foregoing, and the rear cavity of the fourth diaphragm 73 is the second rear cavity in the foregoing.

Specifically, the inner spacer ring 90a surrounds the periphery of the first magnet 313 in the circumferential direction of the first magnet 313; the inner edge of the inner spacer ring 90a is sealingly connected (e.g., by adhesive bonding) to the outer sidewall of the first magnet 313; meanwhile, the outer edge of the inner spacer ring 90a is hermetically connected (e.g., bonded by an adhesive) to the inner sidewall of the second magnet 333. The outer spacer ring 90b surrounds the second magnet 333 along the circumference of the second magnet 333; the inner edge of the outer spacer ring 90b is sealingly connected (e.g., by adhesive bonding) to the outer sidewall of the second magnet 333; at the same time, the outer edge of the outer spacer ring 90b is sealingly connected (e.g., by adhesive bonding) to the inner sidewall of the third magnet 353.

It will be appreciated that, with the design of the present embodiment, only one isolation ring is disposed between the first magnet 313 and the second magnet 333 to isolate the first magnetic gap 30a from the third magnetic gap 30c, so as to ensure that the acoustic waves generated in the rear cavities of the two high-frequency vibrating portions do not cross-talk, and the acoustic energy radiation is not attenuated due to the phase problem of the acoustic radiation. Meanwhile, with the design of the present embodiment, only another isolation ring is arranged between the second magnet 333 and the third magnet 353, so that the isolation between the second magnetic gap 30b and the fourth magnetic gap 30d can be realized, thereby ensuring that the acoustic waves generated in the rear cavities of the two low-frequency vibration parts do not cross-talk, and the acoustic energy radiation is not attenuated due to the phase problem of the acoustic radiation.

In addition, the inner spacer ring 90a and the outer spacer ring 90b introduced in the present embodiment may be made of materials that do not interfere with the magnetic field, such as plastic, glass, wood, etc., so as to ensure the integrity, stability and reliability of the magnetic field provided by the magnetic circuit system 30. Similarly, the basin stand 10 may also be made of the same material as the inner spacer 90a or the outer spacer 90b to avoid interference with the magnetic circuit system 30.

The invention also proposes an electronic device comprising a loudspeaker 100 as described above, the specific structure of the loudspeaker 100 being in accordance with the previous embodiments. Because the electronic device adopts all the technical schemes of all the embodiments, the electronic device at least has all the beneficial effects brought by all the technical schemes of all the embodiments, and the detailed description is omitted. Wherein the electronic device further comprises an electronic control assembly comprising a frequency divider to which the loudspeaker 100 is electrically connected.

It is understood that the electronic device may be, but is not limited to, a cell phone, tablet, television, display, notebook, digital photo frame, personal digital assistant (Personal Digital Assistant, PDA), e-book reader, MP3 (dynamic video expert compressed standard audio plane 3,Moving Picture Experts Group Audio Layer III) player, MP4 (dynamic video expert compressed standard audio plane 4,Moving Picture Experts Group Audio Layer IV) player, wearable device, navigator, palm game console, virtual reality device, augmented reality device, desktop speakers, etc.

Further, the first voice coil 55 and the second voice coil 57 in the first vibration system 50 of the speaker 100 are electrically connected to the frequency divider, and the third voice coil 75 and the fourth voice coil 77 in the second vibration system 70 of the speaker 100 are electrically connected to the frequency divider. Specifically, the frequency divider has a first output port, a second output port, a third output port, and a fourth output port, the first voice coil 55 is electrically connected to the first output port, the second voice coil 57 is electrically connected to the second output port, the third voice coil 75 is electrically connected to the third output port, and the fourth voice coil 77 is electrically connected to the fourth output port.

It will be appreciated that, under the design of the present embodiment, the frequency divider may be used to divide the signal before the signal flows to the first vibration system 50, so that the frequency division input of the signal can be implemented—the high frequency signal enters the high frequency vibration portion and the low frequency signal enters the low frequency vibration portion, so that the high frequency signal and the low frequency signal can take the way (where the high frequency signal and the low frequency signal may also have appropriate overlap), and the advantages of the working frequency bands of the high frequency vibration portion and the low frequency vibration portion are fully utilized. Therefore, under the condition that the safe operation of the systems in different frequency bands is ensured and the full play of the systems in different frequency bands is realized, the playback characteristics in different frequency bands are more balanced. Similarly, the frequency divider may be used to divide the frequency of the signal before the signal flows to the second vibration system 70, so that the frequency division input of the signal can be realized, that is, the high-frequency signal enters the high-frequency vibration portion and the low-frequency signal enters the low-frequency vibration portion, so that the high-frequency signal and the low-frequency signal can be in the same path (where the high-frequency signal and the low-frequency signal can be properly overlapped), and the advantages of the working frequency bands of the high-frequency vibration portion and the low-frequency vibration portion are fully utilized. Therefore, under the condition that the safe operation of the systems in different frequency bands is ensured and the full play of the systems in different frequency bands is realized, the playback characteristics in different frequency bands are more balanced.

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 the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A loudspeaker, comprising:

a basin stand;

2. The loudspeaker of claim 1, wherein the frame comprises a barrel having a first end and a second end, the first end and the second end each being open;

3. The loudspeaker of claim 2, wherein the second diaphragm, the cylindrical body, the first support ring, and the magnetic circuit system enclose a first rear cavity, and the first end is provided with a first pressure relief hole communicating with the first rear cavity;

4. The loudspeaker of claim 2, wherein the frame further comprises a first extension formed by the first end extending outwardly and a second extension formed by the second end extending outwardly, the first extension and the second extension being for securing the frame.

5. The loudspeaker of claim 1, wherein the second diaphragm has a flat plate-like structure;

and/or, the fourth vibrating diaphragm is in a flat plate structure.

6. The loudspeaker of claim 1, wherein the first diaphragm and the second diaphragm are of unitary construction;

7. A loudspeaker according to any one of claims 1 to 6, wherein the magnetic circuit system comprises:

an inner magnetic circuit portion;

8. The loudspeaker of claim 7, wherein the inner magnetic circuit portion comprises a first magnetically permeable plate, a first magnet, and a second magnetically permeable plate; wherein the first magnet is clamped between the first magnetic conduction plate and the second magnetic conduction plate;

9. The loudspeaker of claim 8, further comprising an inner spacer ring and an outer spacer ring, the inner spacer ring disposed between the first magnet and the second magnet to isolate the first magnetic gap from the third magnetic gap such that the back cavity of the first diaphragm is independent of the back cavity of the third diaphragm;

10. An electronic device comprising a loudspeaker as claimed in any one of claims 1 to 9.