CN217388904U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a micro loudspeaker, which comprises a frame, and a vibration component, a magnetic circuit component and a support component which are respectively arranged on the frame, wherein the vibration component comprises a vibrating diaphragm component and a voice coil which are connected, the vibrating diaphragm component is connected with the frame, the support component comprises an auxiliary diaphragm which is connected with the voice coil and the frame, the auxiliary diaphragm is provided with an extension part and a support part which are connected, the extension part extends along the vibration direction of the voice coil and is bonded with the outer side wall of the voice coil, and the support part is connected with the bottom of the vibrating diaphragm component and the top of the voice coil; the utility model provides a micro loudspeaker has low in manufacturing cost's characteristics, sets up extension and supporting part on the auxiliary membrane, 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.

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 to be used therein.

Miniature speaker generally includes the basin frame and locates magnetic circuit, vibration system and the braced system of basin frame respectively, and vibration system generally includes consecutive vibrating diaphragm subassembly, skeleton and voice coil loudspeaker voice coil, and braced system includes the secondary membrane of being connected with the voice coil loudspeaker voice coil, the primary function of skeleton is the position of adjustment voice coil loudspeaker voice coil in the magnetic gap to reduce the empty loss that traditional structure caused, can also improve the BL curve flatness degree of speaker, thereby can improve the symmetry of vibration system vibration, reduce harmonic distortion, can very effectual improvement miniature speaker's wholeness ability.

In the prior art, the framework is generally 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 correspondingly increases the production difficulty, thereby increasing the cost greatly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: a micro-speaker is provided at a low production cost.

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, vibration subassembly is including vibrating diaphragm subassembly and the voice coil loudspeaker voice coil that links to each other, the vibrating diaphragm subassembly with the basin frame is connected, supporting component include with the voice coil loudspeaker voice coil and vice membrane that the basin frame is connected, vice membrane 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.

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

Further, the sub-diaphragm further includes extension arms through which the support portions connected to the adjacent two corner portions of the voice coil are connected.

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

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 connected with the extending part.

Furthermore, the support assembly further comprises a centering support sheet, and the centering support sheet 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 for connecting the voice coil is further arranged on the centering support sheet.

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

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 the auxiliary membrane, 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 damper 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 reference numerals:

1. a diaphragm assembly; 11. a sound membrane; 12. a ball top; 2. a basin stand; 3. a centering support; 31. a second outer fixing portion; 32. a deformation section; 33. a second inner fixing portion; 34. a pad; 4. a voice coil; 5. a secondary membrane; 51. a first outer fixing portion; 52. a folded ring part; 53. a first inner fixing portion; 54. an extension portion; 55. a support portion; 56. an extension arm; 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 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 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 secondary membrane 5 connected to the voice coil 4 and the frame 2, the secondary membrane 5 is provided with an extension portion 54 and a support portion 55 connected to each other, the extension portion 54 extends along a vibration direction of the voice coil 4 and is bonded to an outer side wall of the voice coil 4, and the support portion 55 connects a bottom of the diaphragm assembly 1 to a top of the voice coil 4.

From the above description, the beneficial effects of the present invention are: an extension portion 54 and a support portion 55 are arranged on the secondary membrane 5, the extension portion 54 extends along the vibration direction of the voice coil 4 and is bonded with the outer side wall of the voice coil 4, the support portion 55 is connected with the bottom of the diaphragm assembly 1 and the top of the voice coil 4, and the height of the support portion 55 can be adjusted, so that the position of the voice coil 4 can be adjusted, no extra framework is required to be installed, and the manufacturing cost is reduced.

Further, the support portions 55 are connected to the corners of the voice coil 4.

As can be seen from the above description, the connection position of the support portion 55 can be set according to the actual application requirements, and the diversity of the structure is enriched.

Further, the secondary diaphragm 5 further includes extension arms 56, and the support portions 55 connected to the adjacent two corner portions of the voice coil 4 are connected by the extension arms 56.

As can be seen from the above description, the extension arm 56 is connected to the support portion 55, so as to increase the contact area between the secondary membrane 5 and the diaphragm assembly 1, which is beneficial to improving the structural stability and the acoustic performance.

Further, the extension arm 56 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 56 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 improving the acoustic performance.

Further, the secondary membrane 5 comprises a first outer fixing part 51, a folded ring part 52 and a first inner fixing part 53 which are connected in sequence, the first outer fixing part 51 is connected with the basin frame 2, and the first inner fixing part 53 is connected with the extension part 54.

As can be seen from the above description, the secondary membrane 5 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 4 and connected with the secondary membrane 5 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 5, reduce the risk of polarization of the voice coil 4, and facilitate the improvement of the acoustic performance.

Further, the centering disk 3 comprises a second outer fixing part 31, a deformation part 32 and a second inner fixing part 33 which are sequentially connected, the second outer fixing part 31 is connected with the basin frame 2 and the first outer fixing part 51, and the second inner fixing part 33 is connected with the first inner fixing part 53.

Furthermore, a bonding pad 34 for connecting the voice coil 4 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 4.

Further, the supporting portion 55 is connected to the top of at least one pair of opposite sides of the voice coil 4.

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 diaphragm assembly 1 and a voice coil 4 which are connected, the diaphragm assembly 1 is connected with the frame 2, the support assembly comprises an auxiliary membrane 5 connected with the voice coil 4 and the frame 2, the auxiliary membrane 5 is provided with an extension part 54 and a support part 55 which are connected, the extension part 54 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 55 is connected with the bottom of the diaphragm assembly 1 and the top of the voice coil 4; specifically, the diaphragm assembly 1 includes a diaphragm 11 and a dome 12 connected to each other, the diaphragm 11 is connected to the frame 2, the dome 12 is connected to the voice coil 4, and the support portion 55 is installed between the voice coil 4 and the dome 12; the magnetic circuit assembly 6 comprises a magnetic cover 61, a central magnetic steel 62 and a side magnetic steel 63, 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, at least one part of the voice coil 4 is positioned in the magnetic circuit gap, and after the voice coil 4 is electrified, the voice coil 4 vibrates up and down in the magnetic circuit gap, so that the diaphragm assembly 1 is driven to vibrate and sound.

Preferably, the secondary membrane 5 comprises a first outer fixing part 51, a folded ring part 52 and a first inner fixing part 53 which are connected in sequence, the first outer fixing part 51 is connected with the basin frame 2, and the first inner fixing part 53 is connected with the extension part 54; specifically, in this embodiment, the support assembly further includes a centering support 3 connected to the secondary membrane 5, the centering support 3 is located outside the voice coil 4, the secondary membrane 5 is connected to the frame 2 through the centering support 3, and the centering support 3 can improve the structural strength of the secondary membrane 5, reduce the risk of polarization of the voice coil 4, and facilitate improvement of acoustic performance; more specifically, the spider 3 includes consecutive second outer fixed part 31, deformation portion 32 and second inner fixing part 33, the second outer fixed part 31 with the basin frame 2 and first outer fixed part 51 is connected, second inner fixing part 33 with first inner fixing part 53 is connected, and is detailed, still be equipped with on the spider 3 and be used for connecting the pad 34 of voice coil 4, pad 34 is used for the welding lead wire on the voice coil 4.

In this embodiment, the number of the sub-membranes 5 is four (as shown in fig. 1), the number of the first outer fixing portion 51, the folded ring portion 52, the first inner fixing portion 53, the extending portion 54 and the supporting portion 55 on each sub-membrane 5 is one, the extending portion 54 on each sub-membrane 5 is adhered to the side wall surface of the corner portion of the voice coil 4, and the supporting portion 55 is adhered to the top of the corner portion of the voice coil 4; the support parts 55 on two adjacent secondary membranes 5 are arranged at intervals on 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 4 can also make simultaneously the heat that the voice coil 44 inboard was gathered gives off to the voice coil 4 outside, does 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 55 may be set to be step-shaped (not shown), so that the height of the supporting portion 55 may be adjusted according to actual application requirements, 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 secondary membrane 5 on the basis of the first embodiment, and the difference from the first embodiment is that: the number of the secondary membranes 5 is two, the two secondary membranes 5 are respectively mounted on a set of opposite sides of the voice coil 4, the number of the first outer fixing portion 51, the edge portion 52, the first inner fixing portion 53, the extension portion 54 and the support portion 55 on each secondary membrane 5 is one, the extension portion 54 is bonded on the outer side of the long side or the outer side of the short side of the voice coil 4, and the support portion 55 is bonded on the top of the long side or the short side of the voice coil 4.

EXAMPLE III

Referring to fig. 7, a third embodiment of the present invention is a further improvement on the secondary membrane 5 on the basis of the first embodiment, and is different from the first embodiment in that: the number of the secondary membranes 5 is two, the two secondary membranes 5 are respectively mounted on a set of opposite sides of the voice coil 4, each secondary membrane 5 comprises two first outer fixing portions 51, two folded ring portions 52, two first inner fixing portions 53, two extending portions 54, two supporting portions 55 and one extending arm 56, the extending portions 54 are bonded to the outer side walls of the corners of the voice coil 4, and the supporting portions 55 are bonded to the tops of the corners of the voice coil 4; the extension arm 56 is adhered to the top of the long side or the short side of the voice coil 4, and one end of the extension arm 56 is connected to one of the support portions 55, and the other end is connected to the other support portion 55.

In other embodiments, in the projection along the height direction of the voice coil 4, the extension arm 56 is located in the projection area inside the voice coil 4, and a gap can be formed between the diaphragm assembly 1 and the voice coil 4, so that 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 secondary membrane 5 on the basis of the first embodiment, and is different from the first embodiment in that: the number of the secondary membrane 5 is one, the secondary membrane 5 includes four first outer fixing portions 52, four folded ring portions 52, four first inner fixing portions 53, four extending portions 54, four supporting portions 55 and one extending arm 56, the extending portions 54 are adhered to the outer side walls of the corners of the voice coil 4, and the supporting portions 55 are adhered to the tops of the corners of the voice coil 4; the extension arm 56 is bonded to the top of the long side or the short side of the voice coil 4, and the four support portions 55 are connected by the extension arm 56.

To sum up, the utility model provides a micro loudspeaker has the characteristics that low in manufacturing cost sets up extension and supporting part on the auxiliary membrane, and the extension 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 to adjust the position of voice coil loudspeaker voice coil, need not extra installation skeleton, has reduced manufacturing cost; the extension arm is arranged at the inner side of the voice coil, and a gap can be formed between the vibrating diaphragm assembly and the voice coil, so that the air pressure at the inner side and the outer side of the voice coil is consistent, and the improvement of the acoustic performance is facilitated; 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 (9)

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, 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 vice membrane that the basin frame is connected, a serial communication port, vice membrane 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.

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

3. The microspeaker of claim 2 wherein the secondary membrane further comprises an extension arm through which the support portions connected to adjacent two corners of the voice coil are connected.

4. The micro-speaker as claimed in claim 3, wherein the extension arm is located in a projected area inside the voice coil, projected along a height direction of the voice coil.

5. The micro-speaker as claimed in claim 1, wherein the sub-membrane includes a first outer fixing portion, a folded portion, and a first inner fixing portion connected in sequence, the first outer fixing portion is connected to the frame, and the first inner fixing portion is connected to the extension portion.

6. The micro-speaker of claim 5, wherein the support assembly further comprises a spider located outside the voice coil and connected to the secondary membrane and the frame.

7. The micro-speaker of claim 6, wherein the damper pad comprises a second outer fixing portion, a deformation portion, and a second inner fixing portion, which are sequentially connected, the second outer fixing portion being connected to the frame and the first outer fixing portion, and the second inner fixing portion being connected to the first inner fixing portion.

8. The micro-speaker of claim 7, wherein a bonding pad for connecting the voice coil is further disposed on the centering tab.

9. 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.

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