CN217883705U - Large-amplitude micro loudspeaker - Google Patents
Large-amplitude micro loudspeaker Download PDFInfo
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- CN217883705U CN217883705U CN202220102826.9U CN202220102826U CN217883705U CN 217883705 U CN217883705 U CN 217883705U CN 202220102826 U CN202220102826 U CN 202220102826U CN 217883705 U CN217883705 U CN 217883705U
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- voice coil
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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 centering support sheet which are respectively connected with the basin frame, wherein the vibration component comprises a vibrating diaphragm 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 centering piece to make the extension bond on the lateral wall of voice coil loudspeaker voice coil, eliminated centering piece and to the occuping of voice coil loudspeaker voice coil bottom space, make the amplitude effectively promote.
Description
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 loudspeaker are also increasing, and the requirements on the amplitude are also increasing; can promote micro loudspeaker'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 centering disk (or centering disk + secondary membrane), thereby reach the effect of promoting the amplitude, however centering disk (or centering disk + secondary membrane) is fixed to be located the lower extreme of voice coil loudspeaker voice coil, can occupy the lower vibration space (the distance of voice coil loudspeaker voice coil bottom to magnetic shield) of voice coil loudspeaker voice coil, thereby lead to the amplitude can't effectively be promoted, restrict micro loudspeaker's the development of the bigger amplitude, the change of the shape portion of ring of secondary membrane is less with the clearance of magnetic shield simultaneously, the amplitude increases, can lead to the change of the ring portion of secondary membrane and magnetic shield to bump, the noise takes place, seriously, lead to the broken membrane, influence micro loudspeaker 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 assembly and the centering piece that the basin frame is connected, the vibration subassembly is including vibrating diaphragm and the voice coil loudspeaker voice coil that link to each other, the vibrating diaphragm with the basin frame is connected, the centering piece with the voice coil loudspeaker voice coil is connected, the centering piece is equipped with the edge the extension that the vibration direction of voice coil loudspeaker voice coil extends, the extension bond in the lateral wall of voice coil loudspeaker voice coil.
Further, the extending portion extends toward a direction close to the diaphragm.
Further, the extending portion extends in a direction away from the diaphragm.
Further, the centering disk comprises an outer fixing part, a deformation part and an inner fixing part which are sequentially connected, the outer fixing part is connected with the basin frame, and the inner fixing part is connected with the extension part.
Furthermore, the device also comprises an auxiliary membrane, wherein one end of the auxiliary membrane is connected with the outer fixing part, and the other end of the auxiliary membrane is connected with the inner fixing part.
Further, the extension portion is located outside a corner portion of the voice coil.
Further, the extension part is located outside the long side or the short side of the voice coil.
Furthermore, a bonding pad used for being electrically connected and conducted with the voice coil is arranged on the centering support piece.
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 vibration direction of voice coil loudspeaker voice coil on centering piece to make the extension bond on the lateral wall of voice coil loudspeaker voice coil, eliminated centering piece and to the occuping of voice coil loudspeaker voice coil bottom space, make the amplitude effectively promote.
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 view illustrating a connection between a damper and a voice coil of a large-amplitude micro-speaker according to an embodiment of the present invention.
Description of the reference symbols:
1. a vibrating assembly; 11. vibrating diaphragm; 12. a voice coil; 2. a basin stand; 3. a centering support; 31. an outer fixing portion; 32. a deformation section; 33. an inner fixing portion; 331. an extension portion; 332. a bonding pad; 4. a secondary membrane; 5. a magnetic circuit component; 51. a magnetic shield; 52. a 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 centering support 3 respectively connected to the frame 2, where the vibration assembly 1 includes a diaphragm 11 and a voice coil 12 connected to each other, the diaphragm 11 is connected to the frame 2, the centering support 3 is connected to the voice coil 12, the centering support 3 is provided with an extension 331 extending along a vibration direction of the voice coil 12, and the extension 331 is bonded to an outer sidewall of the voice coil 12.
From the above description, the beneficial effects of the present invention are: the extension 331 extending along the vibration direction of the voice coil 12 is arranged on the centering branch piece 3, and the extension 331 is bonded on the side wall of the voice coil 12, so that the occupation of the centering branch piece 3 on the bottom space of the voice coil 12 is eliminated, and the amplitude is effectively improved.
Further, the extension 331 extends toward a direction close to the diaphragm 11.
Further, the extension 331 extends in a direction away from the diaphragm 11.
As can be seen from the above description, the extending direction of the extending portion 331 can be set according to the actual application requirement, so as to enrich the diversity of the structure.
Further, the centering disk comprises an outer fixing part 31, a deformation part 32 and an inner fixing part 33 which are sequentially connected, the outer fixing part 31 is connected with the basin frame 2, and the inner fixing part 33 is connected with the extension part 34.
Further, the fixing device further comprises a secondary membrane 4, wherein one end of the secondary membrane 4 is connected with the outer fixing part 31, and the other end of the secondary membrane 4 is connected with the inner fixing part 33.
As can be seen from the above description, the secondary film 4 can support the spider 3, so as to reduce the risk of polarization of the voice coil 12, and facilitate improvement of structural stability.
Further, the extension 331 is located outside the corner of the voice coil 12.
Further, the extension 331 is located outside the long side or the short side of the voice coil 12.
As can be seen from the above description, the bonding position of the extension 331 on the voice coil 12 can be set according to the actual application requirements, and the diversity of the structure is enriched.
Further, a pad 332 for electrically connecting and conducting with the voice coil 12 is disposed on the centering branch piece.
As will be appreciated from the above description, the solder pads 332 facilitate wire bonding with the voice coil 12.
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, a vibration assembly 1, a magnetic circuit assembly 5 and a centering support 3, wherein the vibration assembly 1, the magnetic circuit assembly 5 and the centering support 3 are respectively connected with the frame 2, the vibration assembly 1 comprises a vibration diaphragm 11 and a voice coil 12 which are connected, the vibration diaphragm 11 is connected with the frame 2, the centering support 3 is connected with the voice coil 12, the centering support 3 comprises an outer fixing part 31, a deformation part 32 and an inner fixing part 33 which are sequentially connected, the outer fixing part 31 is connected with the frame 2, the inner fixing part 33 is provided with an extension part 331 extending along the vibration direction of the voice coil 12, the extension direction of the extension part 331 is perpendicular to the extension direction of the inner fixing part 33, the height of the inner fixing part 33 is higher than that of the bottom of the voice coil 12, and the extension part 331 is bonded on the outer side wall of the voice coil 12; specifically, the magnetic circuit assembly 5 includes a magnetic cover 51, and a central magnetic steel 52 and a side magnetic steel 53 respectively mounted on the magnetic cover 51, a magnetic circuit gap is formed between the central magnetic steel 52 and the side magnetic steel 53, and the voice coil 12 is located in the magnetic circuit gap.
With reference to fig. 2 and fig. 3, in the present embodiment, the extending portion 331 extends toward a direction close to the diaphragm 11, and in addition, the amplitude-vibrating micro-speaker in the present embodiment further includes a secondary membrane 4, one end of the secondary membrane 4 is connected to the outer fixing portion 31, and the other end is connected to the inner fixing portion 33, so that a distance between the folded ring portion of the secondary membrane 4 and the magnetic housing 51 is increased, a risk of collision between the secondary membrane 4 and the magnetic housing 51 caused by vibration of the voice coil 12 is reduced, and amplitude is improved; in detail, the voice coil 12 has four corners, the damper 3 is disposed outside the corners, and the extension 331 of the damper 3 is located outside the corners of the voice coil 12 and bonded to the outer side walls of the corners.
Preferably, the inner fixing portion 33 is provided with a pad 332 for electrically connecting and conducting with the voice coil 12, the pad 332 is disposed on one side of the inner fixing portion 33 departing from the secondary membrane 4, and the pad 332 is used for welding a lead on the voice coil 12, so as to energize the voice coil 12.
Further, the extension 331 extends in a direction away from the diaphragm 11.
As can be seen from the above description, the extending direction of the extending portion 331 can be set according to the actual application requirement, so that the diversity of the structure is enriched.
Further, the extension 331 is located outside the long side or the short side of the voice coil 12.
As can be seen from the above description, the bonding position of the extension 331 on the voice coil 12 can be set according to the actual application requirements, and the diversity of the structure is enriched.
Example two
Referring to fig. 4, the second embodiment of the present invention is a further improvement of the centering support 3 on the basis of the first embodiment, and the difference from the first embodiment is that: the extension 331 extends away from the diaphragm 11, and specifically, a bottom surface of the extension 331 is higher than a bottom surface of the voice coil 12.
EXAMPLE III
Referring to fig. 5, a third embodiment of the present invention is a further improvement of the centering support 3 on the basis of the first embodiment, and is different from the first embodiment in that: the extension 331 is located on the outer side of the long side or the outer side of the short side of the voice coil 12, the number of the spider 3 in this embodiment is two, the two spiders 3 are respectively located on the outer sides of the two long sides or the outer sides of the short side of the voice coil 12 (as shown in fig. 5), each spider 3 includes an outer fixing portion 31, two deformation portions 32 and an inner fixing portion 33, and the extension 331 is bonded on the outer side of the long side or the outer side of the short side of the voice coil 12.
To sum up, the utility model provides a big amplitude micro loudspeaker has compact structure, big amplitude and the abundant characteristics of structural style, sets up the extension that extends along the vibration direction of voice coil loudspeaker voice coil on centering piece to make the extension bond on the lateral wall of voice coil loudspeaker voice coil, eliminated centering piece and to the occuping of voice coil loudspeaker voice coil bottom space, make the amplitude effectively promote.
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 (8)
1. The utility model provides a miniature speaker of big amplitude, including the basin frame and respectively with vibration subassembly, magnetic circuit assembly and the centering piece that the basin frame is connected, the vibration subassembly is including continuous vibrating diaphragm and voice coil loudspeaker voice coil, the vibrating diaphragm with the basin frame is connected, the centering piece with the voice coil loudspeaker voice coil is connected, its characterized in that, the centering piece is equipped with the edge the extension that the vibration direction of voice coil loudspeaker voice coil extends, the extension bond in the lateral wall of voice coil loudspeaker voice coil.
2. The large amplitude microspeaker of claim 1 wherein the extension extends in a direction closer to the diaphragm.
3. The large-amplitude microspeaker of claim 1 wherein the extension extends away from the diaphragm.
4. The micro large-amplitude loudspeaker according to claim 1, wherein the centering disk comprises an outer fixing portion, a deformation portion and an inner fixing portion which are connected in sequence, the outer fixing portion is connected with the frame, and the inner fixing portion is connected with the extension portion.
5. The large amplitude microspeaker of claim 4 further comprising a secondary membrane, one end of the secondary membrane being connected to the outer fixing portion and the other end being connected to the inner fixing portion.
6. The large amplitude microspeaker of claim 1 wherein the extension is located outside the corners of the voice coil.
7. The large amplitude micro-speaker of claim 1, wherein the extension is located outside a long side or outside a short side of the voice coil.
8. The micro-speaker as claimed in claim 1, wherein the stiffener has a pad for electrically connecting to the voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220102826.9U CN217883705U (en) | 2022-01-14 | 2022-01-14 | Large-amplitude micro loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220102826.9U CN217883705U (en) | 2022-01-14 | 2022-01-14 | Large-amplitude micro loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217883705U true CN217883705U (en) | 2022-11-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220102826.9U Active CN217883705U (en) | 2022-01-14 | 2022-01-14 | Large-amplitude micro loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217883705U (en) |
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2022
- 2022-01-14 CN CN202220102826.9U patent/CN217883705U/en active Active
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