CN217388901U

CN217388901U - Large-amplitude micro loudspeaker

Info

Publication number: CN217388901U
Application number: CN202220102820.1U
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-09-06
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a large-amplitude micro loudspeaker, which comprises a basin frame, and a vibration component, a magnetic circuit component and a support component which are respectively connected with the basin frame, wherein the vibration component comprises a vibration diaphragm component and a voice coil which are connected with each other; the utility model provides a miniature speaker of big amplitude is compact structure not only, can also promote the amplitude effectively, sets up the extension that extends along the vibration direction of voice coil loudspeaker voice coil on vice membrane to make the extension bond on the lateral wall of voice coil loudspeaker voice coil, eliminated the occupation of vice membrane to voice coil loudspeaker voice coil bottom space, make the amplitude effectively promote.

Description

Large-amplitude micro loudspeaker

Technical Field

The utility model relates to an acoustics device technical field especially relates to a miniature speaker of big amplitude.

Background

As a device capable of converting electric energy into acoustic energy, a micro speaker is widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers. With the increasing lightness and thinness of microelectronic equipment and the increasing requirements on tone quality and loudness, the requirements on the height of the micro-speaker are also increasingly thin, and the requirements on the amplitude are also increasingly large; can promote micro-speaker's tone quality and loudness through promoting the amplitude, in prior art, often remove to restrain the voice coil loudspeaker voice coil polarization through increasing vice membrane, thereby reach the effect that promotes the amplitude, however the fixed lower extreme that is located the voice coil loudspeaker voice coil of vice membrane, can occupy the lower vibration space of voice coil loudspeaker voice coil bottom to the distance of magnetic shield, thereby lead to the amplitude can't effectively be promoted, the development of the bigger amplitude of restriction micro-speaker, the book ring portion of vice membrane is less with the clearance of magnetic shield simultaneously, along with the increase of amplitude, can lead to the book ring portion of vice membrane and magnetic shield to bump, the noise takes place, when serious, lead to the rupture of membranes, influence micro-speaker life-span.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: a large-amplitude micro-speaker is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a miniature speaker of big amplitude, including the basin frame and respectively with vibration subassembly, magnetic circuit subassembly and the supporting component that the basin frame is connected, vibration subassembly is including vibrating diaphragm subassembly and voice coil loudspeaker voice coil that link to each other, the vibrating diaphragm subassembly with the basin frame is connected, the supporting component include with the vice membrane that the basin frame is connected, vice membrane is equipped with the extension, the extension is followed the vibration direction of voice coil loudspeaker voice coil extends and with the lateral wall bonding of voice coil loudspeaker voice coil.

Further, the extension portion extends toward a direction close to the diaphragm assembly.

Further, the extension portion extends in a direction away from the diaphragm assembly.

Further, the auxiliary membrane comprises a first outer fixing part, a folded ring part and a first inner fixing part which are sequentially connected, the first outer fixing part is connected with the basin frame, and the first inner fixing part is provided with the extending part.

Furthermore, the supporting component further comprises a centering support, and the centering support is located on the outer side of the voice coil and connected with the auxiliary membrane and the basin frame.

Further, the centering disk comprises a second outer fixing part, a deformation part and a second inner fixing part which are sequentially connected, the second outer fixing part is connected with the basin frame and the first outer fixing part, and the second inner fixing part is connected with the first inner fixing part.

Furthermore, a bonding pad used for connecting the voice coil is arranged on the centering support.

Furthermore, the secondary membrane is located outside the corner of the voice coil, and the extension part is adhered to the outer side wall of the corner of the voice coil.

Furthermore, the secondary membrane is positioned on the outer side of the long edge or the outer side of the short edge of the voice coil, and the extension part is adhered to the outer side wall of the long edge or the outer side wall of the short edge of the voice coil.

The beneficial effects of the utility model reside in that: the utility model provides a miniature speaker of big amplitude is compact structure not only, can also promote the amplitude effectively, sets up the extension that extends along the direction of vibration of voice coil loudspeaker voice coil on vice membrane to make the extension bond on the lateral wall of voice coil loudspeaker voice coil, eliminated the occupation of vice membrane to voice coil loudspeaker voice coil bottom space, make the amplitude effectively promoted.

Drawings

Fig. 1 is an exploded view of a large-amplitude micro-speaker according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of a large-amplitude micro-speaker according to a first embodiment of the present invention;

FIG. 3 is a detail view at A of FIG. 2;

fig. 4 is a schematic partial cross-sectional structure view of a large-amplitude micro speaker according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of an auxiliary membrane and a voice coil of a large-amplitude micro-speaker according to a third embodiment of the present invention.

Description of the reference symbols:

1. a vibrating assembly; 11. a sound film; 12. a ball top; 13. a voice coil; 2. a basin stand; 3. a centering disk; 31. a first outer fixing portion; 32. a deformation section; 33. a first inner fixing portion; 34. a pad; 4. a secondary membrane; 41. a second outer fixing portion; 42. a folded ring part; 43. a second inner fixing portion; 44. an extension portion; 5. a magnetic circuit component; 51. a magnetic shield; 52. central magnetic steel; 53. and edge magnetic steel.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, a large-amplitude micro speaker includes a frame 2, and a vibration assembly 1, a magnetic circuit assembly 5, and a support assembly respectively connected to the frame 2, where the vibration assembly 1 includes a diaphragm assembly and a voice coil 13 connected to each other, the diaphragm assembly is connected to the frame 2, the support assembly includes a secondary membrane 4 connected to the frame 2, the secondary membrane 4 is provided with an extension portion 44, and the extension portion 44 extends along a vibration direction of the voice coil 13 and is bonded to an outer sidewall of the voice coil 13.

From the above description, the beneficial effects of the present invention are: the extension portion 44 extending along the vibration direction of the voice coil 13 is arranged on the secondary membrane 4, and the extension portion 44 is bonded on the side wall of the voice coil 13, so that the occupation of the secondary membrane 4 on the bottom space of the voice coil 13 is eliminated, and the amplitude is effectively improved.

Further, the extension 44 extends toward a direction close to the diaphragm assembly.

Further, the extension 44 extends away from the diaphragm assembly.

As can be seen from the above description, the extending direction of the extending portion 44 can be set according to the actual application requirement, so as to enrich the diversity of the structure.

Further, the auxiliary membrane 4 comprises a first outer fixing part 31, a folded ring part 42 and a first inner fixing part 33 which are connected in sequence, the first outer fixing part 31 is connected with the basin frame 2, and the first inner fixing part 33 is provided with the extending part 44.

As can be seen from the above description, the secondary membrane 4 has a simple structure and is easy to manufacture and mold.

Further, the support assembly further comprises a centering support 3, and the centering support 3 is located on the outer side of the voice coil 13 and connected with the secondary membrane 4 and the basin frame 2.

As can be seen from the above description, the centering branch piece 3 can improve the structural strength of the secondary membrane 4, reduce the risk of polarization of the voice coil 13, and facilitate the improvement of the acoustic performance.

Further, the centering disk 3 comprises a second outer fixing part 41, a deformation part 32 and a second inner fixing part 43 which are sequentially connected, the second outer fixing part 41 is connected with the basin frame 2 and the first outer fixing part 31, and the second inner fixing part 43 is connected with the first inner fixing part 33.

Furthermore, a bonding pad 34 for connecting the voice coil 13 is further disposed on the spider 3.

As is apparent from the above description, the bonding pads 34 are used for bonding the leads on the voice coil 13.

Further, the secondary membrane 4 is located outside the corner of the voice coil 13, and the extension portion 44 is adhered to the outer side wall of the corner of the voice coil 13.

Further, the secondary membrane 4 is located outside the long side or the short side of the voice coil 13, and the extension portion 44 is bonded to the outer side wall of the long side or the outer side wall of the short side of the voice coil 13.

As can be seen from the above description, the installation position of the extension portion 44 on the voice coil 13 can be set according to the actual application requirements, and the diversity of the structure is enriched.

Example one

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: a large-amplitude micro loudspeaker comprises a frame 2, and a vibration assembly 1, a magnetic circuit assembly 5 and a support assembly which are respectively connected with the frame 2, wherein the vibration assembly 1 comprises a vibration diaphragm assembly and a voice coil 13 which are connected, the vibration diaphragm assembly is connected with the frame 2, the support assembly comprises an auxiliary diaphragm 4 connected with the frame 2, the auxiliary diaphragm 4 is provided with an extension part 44, and the extension part 44 extends along the vibration direction of the voice coil 13 and is bonded with the outer side wall of the voice coil 13; specifically, the diaphragm assembly includes a diaphragm 11 and a dome 12 connected to the diaphragm 11, the diaphragm 11 is connected to the frame 2, and the dome 12 is connected to the voice coil 13; the magnetic circuit component 5 comprises a magnetic cover 51, central magnetic steel 52 and edge magnetic steel 53, the magnetic steel is connected with the basin frame 2, the central magnetic steel 52 and the edge magnetic steel 53 are respectively arranged on one side of the magnetic cover 51 close to the voice coil 13, the central magnetic steel 52 is positioned in the center of one side of the magnetic cover 51, the edge magnetic steel 53 is positioned on the outer side of at least one group of opposite sides of the central magnetic steel 52, a magnetic circuit gap is formed between the edge magnetic steel 53 and the central magnetic steel 52, at least one part of the voice coil 13 is positioned in the magnetic circuit gap, and when the voice coil 13 is electrified, the voice coil 13 vibrates up and down in the magnetic circuit gap, so that the diaphragm component is driven to vibrate and sound.

Preferably, the secondary membrane 4 comprises a first outer fixing part 31, a folded ring part 42 and a first inner fixing part 33 which are connected in sequence, the first outer fixing part 31 is connected with the basin frame 2, and the first inner fixing part 33 is provided with the extending part 44; specifically in this embodiment, the support assembly further includes a damper 3 connected to the secondary membrane 4, the secondary membrane 4 is connected to the frame 2 through the damper 3, the damper 3 is located outside the voice coil 13, the damper 3 can improve the structural strength of the secondary membrane 4, reduce the risk of polarization of the voice coil 13, and facilitate improvement of acoustic performance, more specifically, the damper 3 includes a second outer fixing portion 41, a deformation portion 32, and a second inner fixing portion 43 that are sequentially connected, the second outer fixing portion 41 is connected to the frame 2 and the first outer fixing portion 31, and the second inner fixing portion 43 is connected to the first inner fixing portion 33; in detail, the spider 3 is further provided with a pad 34 for connecting the voice coil 13, and the pad 34 is used for welding a lead on the voice coil 13.

In this embodiment, the number of the secondary membranes 4 is four, the four secondary membranes 4 are all located outside the corners of the voice coil 13, and the extension portions 44 are adhered to the outer side walls of the corners of the voice coil 13; the extension portion 44 extends toward a direction close to the diaphragm assembly, and the second inner fixing portion 43 is located outside the extension portion 44.

Example two

Referring to fig. 4, the second embodiment of the present invention is a further improvement of the secondary membrane 4 on the basis of the first embodiment, and the difference from the first embodiment is that: the extension portion 44 extends in a direction away from the diaphragm assembly, and particularly, the extension direction of the extension portion 44 can be set according to actual application requirements, so that structural diversity is enriched.

EXAMPLE III

Referring to fig. 5, a third embodiment of the present invention is a further improvement on the secondary membrane 4 on the basis of the first embodiment, and is different from the first embodiment in that: the number of the auxiliary membranes 4 is two, the two auxiliary membranes 4 are located on the outer side of the long side or the outer side of the short side of the voice coil 13, the extension portion 44 is bonded on the outer side wall of the long side or the outer side wall of the short side of the voice coil 13, the mounting position of the extension portion 44 on the voice coil 13 can be set according to actual application requirements, and the diversity of the structure is enriched.

To sum up, the large-amplitude micro speaker provided by the utility model has the advantages that the structure is compact, the amplitude can be effectively improved, the extension part extending along the vibration direction of the voice coil is arranged on the auxiliary membrane, and the extension part is bonded on the side wall of the voice coil, so that the occupation of the auxiliary membrane on the bottom space of the voice coil is eliminated, and the amplitude is effectively improved; and the structure style of the large-amplitude micro loudspeaker is rich.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a miniature speaker of big amplitude, including the basin frame and respectively with vibration subassembly, magnetic circuit subassembly and the supporting component that the basin frame is connected, vibration subassembly is including vibrating diaphragm subassembly and voice coil loudspeaker voice coil that link to each other, the vibrating diaphragm subassembly with the basin frame is connected, the supporting component include with the vice membrane that the basin frame is connected, its characterized in that, vice membrane is equipped with the extension, the extension is followed the vibration direction of voice coil loudspeaker voice coil extends and with the lateral wall of voice coil loudspeaker voice coil bonds.

2. The large amplitude microspeaker of claim 1 wherein the extension extends in a direction proximate the diaphragm assembly.

3. The large amplitude microspeaker of claim 1 wherein the extension extends away from the diaphragm assembly.

4. The micro loudspeaker according to claim 1, wherein the sub membrane comprises a first outer fixing portion, a folded ring portion and a first inner fixing portion, the first outer fixing portion is connected to the frame, and the first inner fixing portion is provided with the extending portion.

5. The loud-amplitude microspeaker of claim 4 wherein the support assembly further comprises a spider located outside the voice coil and connected to the secondary membrane and the frame.

6. The micro speaker as claimed in claim 5, wherein the center clip includes a second outer fixing portion, a deformation portion, and a second inner fixing portion connected in sequence, the second outer fixing portion being connected to the frame and the first outer fixing portion, the second inner fixing portion being connected to the first inner fixing portion.

7. The loud-speaker of claim 5 wherein said centering tabs are further provided with bonding pads for connecting said voice coil.

8. The micro-speaker as claimed in claim 1, wherein the sub-diaphragm is located outside the corners of the voice coil, and the extension is adhered to the outside walls of the corners of the voice coil.

9. The micro-speaker as claimed in claim 1, wherein the sub-film is located outside the long side or the short side of the voice coil, and the extension is bonded to the outer side of the long side or the outer side of the short side of the voice coil.