CN114025291A

CN114025291A - High-amplitude micro loudspeaker with double suspension racks

Info

Publication number: CN114025291A
Application number: CN202111407157.2A
Authority: CN
Inventors: 张勇磊; 任江凤; 吴逸飞
Original assignee: Bestar Holding Co ltd
Current assignee: Bestar Holding Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-02-08

Abstract

The invention relates to the field of sounding devices, in particular to a high-amplitude micro loudspeaker with a double-suspension rack, which comprises a voice diaphragm set, a voice coil, a suspension assembly, a basin frame, a main magnet and a magnetic shield, wherein the voice diaphragm set is fixed on one end surface of the basin frame, and the voice coil is connected with the voice diaphragm set and is supported by the suspension assembly to be suspended and sleeved on the main magnet; the suspension assembly is fixed on the basin frame, the basin frame is fixed on the magnetic shield, and the main magnet is fixed on one side of the magnetic shield facing the voice diaphragm group. The suspension assemblies are arranged on the upper end surface and the lower end surface of the voice coil, so that the suspension assemblies can completely support the weight of the voice coil, the auxiliary suspension by relying on the voice diaphragm set is avoided, and the vibrating diaphragm in the voice diaphragm set can exert the maximum acoustic performance; the voice coil is supported by the first cantilever and the second cantilever, so that the design quality of the voice coil can be increased, the thickness of a voice film is reduced, and the aims of reducing the minimum resonance frequency and increasing the low-frequency amplitude are fulfilled; the requirement of improving the bass effect is further realized while the loudspeaker is miniaturized.

Description

High-amplitude micro loudspeaker with double suspension racks

Technical Field

The invention relates to the technical field of acoustics, in particular to a high-amplitude micro loudspeaker with a double-suspension frame.

Background

The loudspeaker is used as an important electroacoustic transducer in an electronic product, and along with the development of lightness and thinness of the electronic product, higher requirements are put forward on the volume and the efficiency of the loudspeaker; the loudspeaker is required to be smaller and smaller, and better bass effect is obtained.

In the prior art, in order to obtain better bass effect, a large magnet and a large voice coil are usually adopted to be matched, but the volume of the loudspeaker needs to be increased along with the realization of the large magnet and the large voice coil; due to the structural and space limitations of some light and thin electronic products, a proper assembly space cannot be provided for the loudspeaker with the increased volume, and further the sound pressure and the power of the loudspeaker are low; the increase of sound pressure and power inevitably requires the increase of vibration amplitude of the diaphragm, accompanied by the increase of weight of the vibration system, and the development of the slimness and thinness of electronic products also requires the reduction of the vibration system of the speaker.

In view of the above problems, the present designer is actively making research and innovation based on the practical experience and professional knowledge that is abundant for many years in the engineering application of such products, so as to create a high-amplitude micro speaker with a double-suspension rack, which is more practical.

Disclosure of Invention

The present invention is directed to a high-amplitude micro-speaker with a dual suspension, which overcomes the drawbacks of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: a high amplitude micro-speaker with a dual suspension, comprising: the voice coil is connected with the voice diaphragm group and supported by the suspension assembly to be suspended and sleeved on the main magnet;

the suspension assembly is fixed on the basin frame, the basin frame is kept away from the one end of audio diaphragm group is fixed on the magnet cover, the main magnet is fixed the magnet cover orientation on one side of audio diaphragm group the both sides of main magnet are still the symmetry and are provided with vice magnet.

Furthermore, the suspension assembly comprises a first cantilever and a second cantilever which are arranged in parallel, and the first cantilever and the second cantilever are respectively and fixedly connected with two end faces of the voice coil;

the first cantilever is arranged between the voice coil and the voice diaphragm group, two sides of the first cantilever are respectively fixedly connected with the voice coil and the voice diaphragm group, and the second cantilever is fixed towards one end of the magnetic cover.

Furthermore, the distance between the two end faces of the basin frame is the same as the distance between the two end faces of the voice coil, and one side, facing the voice coil, of the first cantilever and one side, facing the voice coil, of the second cantilever are fixedly connected with the two end faces of the basin frame respectively.

Further, the first cantilever comprises an outer ring frame, an inner ring frame and a first elastic arm which are arranged on the same horizontal plane, wherein the outer ring frame and the inner ring frame are respectively arranged corresponding to the basin frame and the voice coil and are fixedly connected through the first elastic arm;

the two second cantilevers are symmetrically arranged on two sides of the voice coil and comprise an outer support plate, an inner support plate and a second elastic arm which are arranged in the same horizontal plane, and the outer support plate and the inner support plate are respectively arranged corresponding to the basin frame and the voice coil and are fixedly connected through the second elastic arm.

Further, the outer ring support and the outer support plate are respectively bonded to two end faces of the basin support, and the inner ring support and the inner support plate are respectively bonded to two end faces of the voice coil.

Further, the diaphragm set comprises a diaphragm, the diaphragm is fixed on the first cantilever, and the diaphragm comprises a ball top at the middle part, a folding ring arranged around the ball top, and an outer ring arranged around the folding ring;

the folding ring is positioned above the first elastic arm, and the parts of the ball top and the outer ring, which are close to the folding ring, are respectively and fixedly connected with the inner ring frame and the outer ring frame.

Furthermore, the sound membrane module further comprises a middle sticker arranged on the vibrating membrane, and the middle sticker is arranged corresponding to the top of the ball.

Further, a ring pressing frame is arranged on the basin frame and embedded in a ring groove formed in the middle of the inner wall of the basin frame;

the pressing ring frame is provided with a pressing plate corresponding to the auxiliary magnet in a protruding mode, and the pressing plate is fixedly connected with one face, facing the voice diaphragm group, of the auxiliary magnet.

Furthermore, the voice coil is integrally arranged in a rectangular tubular shape and comprises coils which are arranged in a surrounding mode along the axial direction of the voice coil.

Further, the main magnet corresponds the voice coil loudspeaker voice coil sets up to circle rectangle shape, vice magnet symmetry sets up the long limit both sides of main magnet, two the second cantilever symmetry sets up the short side both sides of main magnet.

The invention has the beneficial effects that:

according to the invention, the suspension assemblies are arranged on the upper end surface and the lower end surface of the voice coil, so that the suspension assemblies can completely support the weight of the voice coil, the auxiliary suspension by relying on the voice diaphragm group is avoided, and the vibrating diaphragm in the voice diaphragm group can exert the maximum acoustic performance;

the voice coil is supported by the first cantilever and the second cantilever, so that the design quality of the voice coil can be increased, the thickness of a voice film is reduced, and the aims of reducing the minimum resonance frequency and increasing the low-frequency amplitude are fulfilled; the requirement of improving the bass effect is further realized while the loudspeaker is miniaturized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a high-amplitude micro-speaker according to an embodiment of the present invention;

FIG. 2 is an exploded view of a micro-speaker according to an embodiment of the present invention;

FIG. 3 is a schematic view of the mounting of a voice coil on a suspension assembly in accordance with an embodiment of the present invention;

FIG. 4 is a schematic structural view of a suspension assembly in an embodiment of the present invention;

FIG. 5 is a schematic structural view of a basin stand according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a pressure ring holder according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of the loudspeaker shown in fig. 1 at section a-a;

FIG. 8 is an enlarged view of a portion of the structure at C in FIG. 7;

fig. 9 is a cross-sectional view of the loudspeaker shown in fig. 1 at section B-B;

fig. 10 is an enlarged view of a portion of the structure at D in fig. 9.

Reference numerals: 1. a voice diaphragm group; 11. vibrating diaphragm; 111. a ball top; 112. folding the ring; 113. an outer ring; 12. middle pasting; 2. a voice coil; 3. a suspension assembly; 31. a first cantilever; 311. an outer ring frame; 312. an inner ring frame; 313. a first elastic arm; 32. a second cantilever; 321. an outer support plate; 322. an inner support plate; 323. a second elastic arm; 4. a basin stand; 41. a ring pressing frame; 411. pressing a plate; 42. a ring groove; 5. a main magnet; 51. a secondary magnet; 6. and a magnetic shield.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 10, the high amplitude micro speaker with a double suspension frame includes a voice diaphragm set 1, a voice coil 2, a suspension assembly 3, a frame 4, a main magnet 5 and a magnetic shield 6, wherein the voice diaphragm set 1 is fixed on one end surface of the frame 4, the voice coil 2 is connected with the voice diaphragm set 1 and is supported by the suspension assembly 3 to be suspended and sleeved on the main magnet 5; hang subassembly 3 and fix on basin frame 4, the one end that audio diaphragm group 1 was kept away from to basin frame 4 is fixed on magnetic shield 6, and main magnet 5 is fixed on one side of magnetic shield 6 towards audio diaphragm group 1, still the symmetry is provided with vice magnet 51 in main magnet 5's both sides.

In order to solve the technical bottleneck that the micro loudspeaker cannot meet the requirement of design along with light weight of electronic products and simultaneously improve low-frequency sound effect in the prior art, the invention realizes the miniaturization of the loudspeaker, simultaneously reduces the minimum resonance frequency and increases the low-frequency amplitude by arranging the loudspeaker structure with the double-suspension frame, and improves the sound pressure and the power of the loudspeaker under the same volume.

Specifically, through set up first cantilever 31 and second cantilever 32 respectively at voice coil 2's upper and lower both ends face and hang the support to voice coil 2, avoid voice coil 2 to rely on voice diaphragm group 1 to carry out the auxiliary stay and then reduced the acoustic performance of voice diaphragm group 1 when can increase 2 design weight of voice coil, the biggest acoustic performance of voice diaphragm group 1 can fully be given play to the design of first cantilever 31 and second cantilever 32, can also make 11 frivolous designs of vibrating diaphragm, further increase low frequency amplitude through the mode that reduces minimum low frequency amplitude, thereby improve the bass effect.

As a preferred embodiment of the present invention, as shown in fig. 3 and 4, a specific structural schematic diagram of the suspension assembly 3 is shown, the suspension assembly 3 includes a first suspension 31 and a second suspension 32 which are arranged in parallel, and the first suspension 31 and the second suspension 32 are respectively fixedly connected with two end faces of the voice coil 2; the first cantilever 31 is arranged between the voice diaphragm set 1 and the voice coil 2, and two sides of the first cantilever are respectively fixedly connected with the voice diaphragm set 1 and the voice coil 2, and the second cantilever 32 is fixed at one end of the voice coil 2 facing the magnetic cover 6.

Further, the first cantilever 31 comprises an outer ring frame 311, an inner ring frame 312 and a first elastic arm 313 which are arranged on the same horizontal plane, wherein the outer ring frame 311 and the inner ring frame 312 are respectively arranged corresponding to the basin frame 4 and the voice coil 2 and are fixedly connected through the first elastic arm 313;

the two second cantilevers 32 are symmetrically arranged on two sides of the voice coil 2, and include an outer support plate 321, an inner support plate 322 and a second elastic arm 323 which are arranged on the same horizontal plane, and the outer support plate 321 and the inner support plate 322 are respectively arranged corresponding to the basin stand 4 and the voice coil 2 and are fixedly connected through the second elastic arm 323. The outer ring holder 311 and the outer support 321 are bonded to both end surfaces of the bowl frame 4, respectively, and the inner ring holder 312 and the inner support 322 are bonded to both end surfaces of the voice coil 2, respectively.

As shown in fig. 9 and 10, the first suspension arm 31 and the second suspension arm 32 are fixed on the upper and lower end surfaces of the basin frame 4 by an outer ring support 311 and an outer support 321 which are arranged on the outer side of the first suspension arm and the second suspension arm, respectively, wherein the fixing can be performed by a double-sided adhesive tape or a liquid adhesive tape; and the suspension support of the voice coil 2 is realized through the inner ring support 312 and the inner support plate 322 which are arranged at the inner side, wherein the inner ring support 312 of the first cantilever 31 provides upward pulling force for the upper end face of the voice coil 2, the inner support plate 322 of the second cantilever 32 provides upward supporting force for the lower end face of the voice coil 2, the inner ring support 312 and the inner support plate 322 are respectively connected with the outer ring support 311 and the outer support plate 321 which are fixed on the basin frame 4 through the first elastic arm 313 and the second elastic arm 323, and the arrangement of the elastic arms does not influence the voice coil 2 to push the voice coil assembly 1 to vibrate.

In the above preferred embodiment, the distance between the two end surfaces of the frame 4 is the same as the distance between the two end surfaces of the voice coil 2, and the first suspension 31 and the second suspension 32 are fixedly connected to the two end surfaces of the frame 4 on the sides facing the voice coil 2, respectively. Make suspension assembly 3 more stable to voice coil loudspeaker voice coil 2's support, can not produce the extra effort that produces under the effect of removing the magnetic field to voice coil loudspeaker voice coil 2, guarantee speaker acoustic performance's stability.

In the present invention, the diaphragm set 1 includes a diaphragm 11, the diaphragm 11 is fixed on the first suspension arm 31, the diaphragm 11 includes a ball top 111 in the middle portion, a folding ring 112 disposed around the ball top 111, and an outer ring 113 disposed around the folding ring 112; the folding ring 112 is positioned above the first elastic arm 313, and the parts of the top 111 and the outer ring 113 close to the folding ring 112 are fixedly connected with the inner ring frame 312 and the outer ring frame 311 respectively.

As another preferred embodiment of the present invention, as shown in fig. 7 and 8, the diaphragm set 1 further includes a middle sticker 12 disposed on the diaphragm 11, where the middle sticker 12 is disposed corresponding to the dome 111. The weight of the middle paste 12 is reduced on the premise of ensuring the rigidity of the middle paste, the high-frequency response of the loudspeaker can be further improved, and the high sound pressure of the vibrating diaphragm 11 is ensured by the light-weight middle paste 12.

In the invention, a ring pressing frame 41 is arranged on a basin frame 4, and the ring pressing frame 41 is embedded in a ring groove 42 formed in the middle of the inner wall of the basin frame 4; the pressing ring frame 41 is provided with a pressing plate 411 corresponding to the sub-magnet 51 in a protruding manner, and the pressing plate 411 is fixedly connected with one surface of the sub-magnet 51 facing the voice diaphragm set 1.

The voice coil 2 is arranged in a rectangular tube shape as a whole, comprises a coil which is arranged around the voice coil in the axial direction of the voice coil, and is changed in stress in a magnetic field to vibrate under the action of the magnetic field through a changed electric signal. In the application, a hollow part at one end of the voice coil 2 close to the magnetic shield 6 is sleeved on the main magnet 5, and a certain vibration space is formed between the upper surface of the main magnet 5 and the vibrating diaphragm 11; further, the main magnet 5 corresponds voice coil 2 and sets up to circle rectangle shape, and vice magnet 51 symmetry sets up in the long limit both sides of main magnet 5, and two second cantilevers 32 symmetry sets up in the minor face both sides of main magnet 5, through this kind of setting, both can guarantee the distribution of magnetic field, can reduce occupying in space again, strengthen fixed avoiding interfering with the motion of second cantilever 32 when strengthening vice magnet 51, guarantee vibrating diaphragm 11's vibration stroke.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A high amplitude micro-speaker with a dual suspension, comprising: the voice coil loudspeaker comprises a voice diaphragm set (1), a voice coil (2), a suspension assembly (3), a basin frame (4), a main magnet (5) and a magnetic shield (6), wherein the voice diaphragm set (1) is fixed on one end face of the basin frame (4), the voice coil (2) is connected with the voice diaphragm set (1) and is supported by the suspension assembly (3) to be suspended and sleeved on the main magnet (5);

hang subassembly (3) and fix on basin frame (4), basin frame (4) are kept away from the one end of audio diaphragm group (1) is fixed on magnet shield (6), main magnet (5) are fixed magnet shield (6) orientation on one side of audio diaphragm group (1) the both sides of main magnet (5) are still the symmetry and are provided with vice magnet (51).

2. The micro-speaker with double suspension according to claim 1, wherein the suspension assembly (3) comprises a first suspension arm (31) and a second suspension arm (32) arranged in parallel, and the first suspension arm (31) and the second suspension arm (32) are fixedly connected to two end faces of the voice coil (2), respectively;

first cantilever (31) set up voice diaphragm group (1) with between voice coil loudspeaker voice coil (2), and its both sides respectively with voice diaphragm group (1) with voice coil loudspeaker voice coil (2) fixed connection, second cantilever (32) are fixed voice coil loudspeaker voice coil (2) orientation the one end of magnetic shield (6).

3. The micro-speaker with double suspension according to claim 2, wherein the distance between the two end faces of the frame (4) is the same as the distance between the two end faces of the voice coil (2), and the first suspension arm (31) and the second suspension arm (32) are respectively fixedly connected to the two end faces of the frame (4) on the sides facing the voice coil (2).

4. The micro-speaker with double suspension according to claim 3, wherein the first suspension arm (31) comprises an outer ring frame (311), an inner ring frame (312) and a first elastic arm (313) which are arranged on the same horizontal plane, the outer ring frame (311) and the inner ring frame (312) are respectively arranged corresponding to the frame (4) and the voice coil (2) and are fixedly connected through the first elastic arm (313);

the two second cantilevers (32) are symmetrically arranged on two sides of the voice coil (2) and comprise outer support plates (321), inner support plates (322) and second elastic arms (323) which are arranged in the same horizontal plane, and the outer support plates (321) and the inner support plates (322) are respectively arranged corresponding to the basin frame (4) and the voice coil (2) and fixedly connected through the second elastic arms (323).

5. The micro-speaker with double suspension according to claim 4, wherein the outer ring frame (311) and the outer support plate (321) are respectively bonded to two end surfaces of the frame (4), and the inner ring frame (312) and the inner support plate (322) are respectively bonded to two end surfaces of the voice coil (2).

6. The micro-speaker with double suspension according to claim 4, wherein the diaphragm set (1) comprises a diaphragm (11), the diaphragm (11) is fixed on the first suspension arm (31), the diaphragm (11) comprises a dome (111) at a middle portion, a corrugated rim (112) disposed around the dome (111), and an outer ring (113) disposed around the corrugated rim (112);

the folding ring (112) is positioned above the first elastic arm (313), and the parts of the top dome (111) and the outer ring (113) close to the folding ring (112) are respectively fixedly connected with the inner ring frame (312) and the outer ring frame (311).

7. The micro-speaker with double suspension according to claim 6, wherein the diaphragm set (1) further comprises a middle patch (12) disposed on the diaphragm (11), and the middle patch (12) is disposed corresponding to the dome (111).

8. The micro-speaker with double suspension racks according to claim 4, wherein the frame (4) is provided with a ring pressing frame (41), and the ring pressing frame (41) is embedded in a ring groove (42) formed in the middle of the inner wall of the frame (4);

the pressing ring frame (41) is provided with a pressing plate (411) corresponding to the auxiliary magnet (51) in a protruding mode, and the pressing plate (411) is fixedly connected with one surface, facing the voice diaphragm group (1), of the auxiliary magnet (51).

9. The micro-speaker with a double suspension as claimed in claim 8, wherein the voice coil (2) is formed in a rectangular tubular shape as a whole, and includes a coil circumferentially arranged along an axial direction thereof.

10. The micro-speaker with double suspension according to claim 9, wherein the main magnet (5) is disposed in a circular rectangular shape corresponding to the voice coil (2), the sub-magnet (51) is symmetrically disposed on both sides of the long side of the main magnet (5), and the second suspension arms (32) are symmetrically disposed on both sides of the short side of the main magnet (5).