CN217883706U

CN217883706U - Miniature loudspeaker

Info

Publication number: CN217883706U
Application number: CN202220104216.2U
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: 2022-11-22
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a micro loudspeaker, including the basin frame and install vibration subassembly, magnetic circuit subassembly and the supporting component on the basin frame respectively, the vibration subassembly includes continuous vibrating diaphragm subassembly and voice coil loudspeaker voice coil, the vibrating diaphragm subassembly is connected with the basin frame, the supporting component includes the centering disk of being connected with voice coil loudspeaker voice coil and basin frame, the centering disk is equipped with continuous extension portion and supporting part, the extension portion extends along the vibration direction of voice coil loudspeaker voice coil and bonds with the lateral wall of voice coil loudspeaker voice coil, the supporting part is connected the bottom of vibrating diaphragm subassembly and the top of voice coil loudspeaker voice coil; set up extension and supporting part on centering piece, the extension extends and bonds with the lateral wall of voice coil loudspeaker voice coil along the vibration direction of voice coil loudspeaker voice coil, and the bottom of vibrating diaphragm subassembly and the top of voice coil loudspeaker voice coil are connected to the supporting part, the height of accessible adjustment supporting part to adjust the position of voice coil loudspeaker voice coil, need not additionally to install the skeleton, reduced manufacturing cost.

Description

Miniature loudspeaker

Technical Field

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

Background

The micro-speaker is widely applied to portable electronic equipment such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, there is an increasing demand for miniature electro-acoustic devices used therein.

The micro loudspeaker generally comprises a basin frame, and a magnetic circuit system, a vibration system and a support system which are arranged on the basin frame respectively, wherein the vibration system generally comprises a vibrating diaphragm assembly, a framework and a voice coil which are connected in sequence, and the support system comprises a centering support sheet connected with the voice coil. The main function of the framework is to adjust the position of the voice coil in the magnetic gap, so that the idle consumption caused by the traditional structure is reduced, the flatness degree of a BL curve of the loudspeaker can be improved, the vibration symmetry of a vibration system can be improved, the harmonic distortion is reduced, and the overall performance of the miniature loudspeaker can be effectively improved.

In the prior art, the framework is a metal bracket or a coil part formed by winding an enameled wire, however, the addition of the framework part increases the production process and the production difficulty, which increases the cost greatly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a micro-speaker with low production cost is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a micro loudspeaker, include the basin frame and install respectively in vibration subassembly, magnetic circuit assembly and supporting component on the basin frame, the 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, supporting component include with the voice coil loudspeaker voice coil and the centering piece that the basin frame is connected, the centering piece is equipped with continuous extension and supporting part, 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, the supporting part is connected the bottom of vibrating diaphragm subassembly with the top of voice coil loudspeaker voice coil.

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 centering branch piece is provided with a bonding pad which is electrically connected with the voice coil.

Furthermore, the supporting parts are connected to the corners of the voice coil.

Further, the centering support piece further includes an extension arm, and the support portions connected to two adjacent corners of the voice coil are connected through the extension arm.

Further, along the height direction projection of voice coil, the extension arm is located the inboard projection region of voice coil.

Further, the support assembly further comprises a secondary membrane connected with the centering branch piece.

Furthermore, the top of at least one group of opposite sides of the voice coil is connected with the supporting part.

Further, the cross section of the supporting part is step-shaped.

Furthermore, the vibrating diaphragm component comprises a sound diaphragm and a dome which are connected, and the sound diaphragm is connected with the basin frame.

The beneficial effects of the utility model reside in that: the utility model provides a micro loudspeaker has low in manufacturing cost's characteristics, sets up extension and supporting part on centering piece, and the extension extends and bonds with the lateral wall of voice coil loudspeaker voice coil along the vibration direction of voice coil loudspeaker voice coil, and the bottom of vibrating diaphragm subassembly and the top of voice coil loudspeaker voice coil are connected to the supporting part, the height of accessible adjustment supporting part to adjust the position of voice coil loudspeaker voice coil, need not extra installation skeleton, reduced manufacturing cost.

Drawings

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

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

fig. 5 is a schematic structural view of a spider and a voice coil of a micro-speaker according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a spider and a voice coil of a micro-speaker according to a second embodiment of the present invention;

fig. 7 is a schematic structural view of a spider and a voice coil of a micro-speaker according to a third embodiment of the present invention;

fig. 8 is a schematic structural view of a spider and a voice coil of a micro-speaker according to a fourth embodiment of the present invention.

Description of the reference symbols:

1. a diaphragm assembly; 11. a sound membrane; 12. a ball top; 2. a basin stand; 3. a centering disk; 31. an outer fixing portion; 32. a deformation section; 33. an inner fixing portion; 331. a pad; 34. an extension portion; 35. a support portion; 351. an extension arm; 4. a voice coil; 5. a secondary membrane; 6. a magnetic circuit component; 61. a magnetic shield; 62. a central magnetic steel; 63. and edge magnetic steel.

Detailed Description

In order to explain the technical contents, 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 8, a micro speaker includes a frame 2, and a vibration assembly, a magnetic circuit assembly 6, and a support assembly respectively mounted on the frame 2, where the vibration assembly includes a diaphragm assembly 1 and a voice coil 4 connected to each other, the diaphragm assembly 1 is connected to the frame 2, the support assembly includes a spider 3 connected to the voice coil 4 and the frame 2, the spider 3 is provided with an extending portion 34 and a support portion 35 connected to each other, the extending portion 34 extends along a vibration direction of the voice coil 4 and is bonded to an outer sidewall of the voice coil 4, and the support portion 35 is connected to a bottom of the diaphragm assembly 1 and a top of the voice coil 4.

From the above description, the beneficial effects of the utility model reside in that: set up extension 34 and supporting part 35 on centering brace 3, extension 34 extends and bonds with the lateral wall of voice coil 4 along the vibration direction of voice coil 4, and the bottom of vibrating diaphragm subassembly 1 and the top of voice coil 4 are connected to supporting part 35, and the height of accessible adjustment supporting part 35 to adjust the position of voice coil 4, need not extra installation skeleton, reduced manufacturing cost.

Further, the centering disk 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 basin frame 2, and the inner fixing part 33 is connected with the extension part 34.

Further, the inner fixing portion 33 is provided with a pad 331 for electrical connection with the voice coil 4.

As can be seen from the above description, the pad 331 is convenient for being soldered to the lead wire on the voice coil 4, so as to realize the power-on of the voice coil 4.

Further, the supporting portions 35 are connected to the corners of the voice coil 4.

As can be seen from the above description, the connection position of the supporting portion 35 can be set according to the actual application requirements, and the diversity of the structure is enriched.

Further, an extension arm 351 is included, and the support portions 35 connected to two adjacent corners of the voice coil 4 are connected by the extension arm 351.

As can be seen from the above description, the extension arm 351 is connected to the support portion 35, so as to increase the contact area between the centering support 3 and the diaphragm assembly 1, which is beneficial to improving the structural stability and the acoustic performance.

Further, the extension arm 351 is located in a projection area inside the voice coil 4, projected along the height direction of the voice coil 4.

As can be seen from the above description, the extension arm 351 is disposed inside the voice coil 4, and a gap can be formed between the diaphragm assembly 1 and the voice coil 4, so that the air pressure inside and outside the voice coil 4 is consistent, which is beneficial to the improvement of the acoustic performance.

Further, the support assembly further comprises a secondary membrane 5 connected to the spider 3.

As can be seen from the above description, the secondary film 5 can support the spider 3, so as to reduce the risk of polarization of the voice coil 4, and facilitate improvement of structural stability.

Further, the supporting portion 35 is connected to the top of at least one pair of opposite sides of the voice coil 4.

Further, the cross section of the supporting portion 35 is stepped.

As can be seen from the above description, the shape of the supporting portion 35 can be set according to the actual application requirements, and the structural diversity is enriched.

Further, the diaphragm assembly 1 comprises a sound film 11 and a dome 12 which are connected, and the sound film 11 is connected with the basin stand 2.

Example one

Referring to fig. 1 to 5, a first embodiment of the present invention is: a micro loudspeaker comprises a frame 2, and a vibration assembly, a magnetic circuit assembly 6 and a support assembly which are respectively arranged on the frame 2, wherein the vibration assembly comprises a vibration diaphragm assembly 1 and a voice coil 4 which are connected, the vibration diaphragm assembly 1 is connected with the frame 2, the support assembly comprises a centering support 3 connected with the voice coil 4, the centering support 3 comprises an outer fixing part 31, a deformation part 32, an inner fixing part 33, an extension part 34 and a support part 35 which are sequentially connected, the outer fixing part 31 is connected with the frame 2, the extension part 34 extends along the vibration direction of the voice coil 4 and is bonded with the outer side wall of the voice coil 4, and the support part 35 is connected with the bottom of the vibration diaphragm assembly 1 and the top of the voice coil 4; specifically, the diaphragm assembly 1 comprises a sound film 11 and a dome 12 which are connected, and the sound film 11 is connected with the basin stand 2; the magnetic circuit assembly 6 comprises a magnetic cover 61, a central magnetic steel 62 and a side magnetic steel 63, wherein the central magnetic steel 62 is arranged in the center of the magnetic cover 61, the side magnetic steel 63 is arranged on at least one group of opposite sides of the magnetic cover 61, a magnetic circuit gap is formed between the side magnetic steel 63 and the central magnetic steel 62, and at least one part of the voice coil 4 is positioned in the magnetic circuit gap; in detail, the inner fixing portion 33 is provided with a pad 331 for electrically connecting to the voice coil 4, and the pad 331 is soldered to a lead wire on the voice coil 4 to energize the voice coil 4.

Preferably, please refer to fig. 2, the supporting assembly further includes a secondary film 5 connected to the spider 3, and the secondary film 5 can support the spider 3, so as to reduce the risk of polarization of the voice coil 4, and facilitate improvement of structural stability.

In this embodiment, the number of the spider 3 is four (as shown in fig. 1), the number of the outer fixing portion 31, the deformation portion 32, the inner fixing portion 33, the extension portion 34 and the support portion 35 on each spider 3 is one, the extension portion 34 on each spider 3 is adhered to the side wall surface of the corner of the voice coil 4, and the support portion 35 is adhered to the top of the corner of the voice coil 4; the supporting parts 35 of two adjacent centroiding chips 3 are spaced at the top of the voice coil 4 and form a gap with the top of the voice coil 4 and the bottom of the diaphragm assembly 1 (as shown in fig. 4); so, be convenient for balance the air acoustic pressure of the inside and outside of voice coil loudspeaker voice coil 4 can also make simultaneously the heat that 4 inboard accumulations of voice coil loudspeaker voice coil give off to the 4 outsides of voice coil loudspeaker voice coil, do benefit to the promotion of acoustic performance.

Optionally, in order to adjust the size of the gap between the voice coil 4 and the diaphragm assembly 1, the supporting portion 35 may be set to be step-shaped (not shown), so that the height of the supporting portion 35 may be adjusted according to the actual application requirement, thereby adjusting the size of the gap between the voice coil 4 and the diaphragm assembly 1.

Example two

Referring to fig. 6, 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 quantity of centering branch piece 3 is two, two centering branch piece 3 install respectively in a set of opposite side of voice coil loudspeaker voice coil 4, every centering branch piece 3 includes one outer fixed part 31, two deformation portion 32, an interior fixed part 33, an extension 34 and a supporting part 35, extension 34 bond in the long limit or the minor face outside of voice coil loudspeaker voice coil 4, supporting part 35 bond in the top of the long limit or the minor face of voice coil loudspeaker voice coil 4.

EXAMPLE III

Referring to fig. 7, a third embodiment of the present invention is a further improvement on the centering support 3 based on the first embodiment, and is different from the first embodiment in that: the number of the centering branch pieces 3 is two, the two centering branch pieces 3 are respectively installed on a group of opposite sides of the voice coil 4, each centering branch piece 3 comprises two outer fixing parts 31, two deformation parts 32, two inner fixing parts 33, two extending parts 34, two supporting parts 35 and an extension arm 351, the extending parts 34 are bonded on the outer side wall of the corner part of the voice coil 4, and the supporting parts 35 are bonded on the top of the corner part of the voice coil 4; the extension arm 351 is adhered to the top of the long side or the short side of the voice coil 4, one end of the extension arm 351 is connected to one of the support portions 35, and the other end is connected to the other support portion 35.

In other embodiments, the extension arm 351 is located in the projection area inside the voice coil 4 in the projection along the height direction of the voice coil 4, so that a gap can be formed between the diaphragm assembly 1 and the voice coil 4, and the sound pressure of the air inside and outside the voice coil 4 is consistent, which is beneficial to improving the acoustic performance.

Example four

Referring to fig. 8, a fourth 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 number of the centering branch pieces 3 is one, each centering branch piece 3 comprises four outer fixing parts 31, four deformation parts 32, four inner fixing parts 33, four extension parts 34, four supporting parts 35 and an extension arm 351, each extension part 34 is adhered to the outer side wall of a corner of the voice coil 4, and each supporting part 35 is adhered to the top of the corner of the voice coil 4; the extension arm 351 is bonded to the top of the long side or the short side of the voice coil 4, and the four support portions 35 are connected by the extension arm 351.

To sum up, the utility model provides a micro loudspeaker has the characteristics that low in manufacturing cost sets up extension portion and supporting part on centering support, and the extension portion extends along the vibration direction of voice coil loudspeaker voice coil and bonds with the lateral wall of voice coil loudspeaker voice coil, and the supporting part is connected the bottom of vibrating diaphragm subassembly and the top of voice coil loudspeaker voice coil, and the height of supporting part can be adjusted through adjusting to adjust the position of voice coil loudspeaker voice coil, need not extra installation skeleton, has reduced manufacturing cost; set up the extension arm and be located the voice coil loudspeaker voice coil inboard, can form a clearance between vibrating diaphragm subassembly and voice coil loudspeaker voice coil for the voice coil loudspeaker voice coil inside and outside atmospheric pressure is unanimous, does benefit to the promotion of acoustic performance.

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 micro loudspeaker, include the basin frame and install respectively in vibration subassembly, magnetic circuit assembly and supporting component on the basin frame, the 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, supporting component include with the voice coil loudspeaker voice coil and the centering piece that the basin frame is connected, a serial communication port, the centering piece is equipped with continuous extension and supporting part, the extension is followed the vibration direction of voice coil loudspeaker voice coil extend and with the lateral wall of voice coil loudspeaker voice coil bonds, the supporting part is connected the bottom of vibrating diaphragm subassembly with the top of voice coil loudspeaker voice coil.

2. The micro-speaker as claimed in claim 1, wherein the spider comprises an outer fixing portion, a deformation portion and an inner fixing portion connected in sequence, the outer fixing portion is connected to the frame, and the inner fixing portion is connected to the extension portion.

3. The microspeaker of claim 1 wherein the spider is provided with a pad for electrical connection to the voice coil.

4. The micro-speaker of claim 1, wherein the support portion is connected to each of the corners of the voice coil.

5. The microspeaker of claim 4 wherein the spider further comprises extension arms through which the support portions connected to adjacent two corners of the voice coil are connected.

6. The micro-speaker as claimed in claim 5, wherein the extension arm is located in a projected area inside the voice coil, projected along a height direction of the voice coil.

7. The microspeaker of claim 1 wherein the support assembly further comprises a secondary membrane coupled to the spider.

8. The micro-speaker of claim 1, wherein the support portion is attached to a top portion of at least one set of opposing sides of the voice coil.

9. The micro-speaker as claimed in claim 1, wherein the cross-section of the support part is stepped.

10. The micro-speaker of claim 1, wherein the diaphragm assembly comprises a diaphragm and a dome connected, the diaphragm being connected to the frame.