CN221058435U

CN221058435U - Micro-speaker

Info

Publication number: CN221058435U
Application number: CN202322582420.2U
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: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-05-31
Anticipated expiration: 2033-09-21

Abstract

The utility model discloses a miniature loudspeaker, which comprises a dome and a voice coil, wherein the dome comprises a main body, the main body is provided with a lower convex ring which protrudes downwards, and the lower convex ring is provided with a plurality of notches; the voice coil loudspeaker voice coil includes the body and connects the first lead wire of body, and the bulge loop is connected down to the top surface of body, and the medial surface of body is connected to the one end of first lead wire, and the other end of first lead wire strides over the top of body and extends to the outside of body via the breach. The notch on the lower convex ring can avoid the first lead, so that the body of the voice coil can be connected with the lower convex ring in a plane, the stability and the reliability of connection between the top of the ball and the voice coil are guaranteed, and the risk of accidental separation of the voice coil and the top of the ball is reduced; in addition, the bottom surface of the body of the voice coil can be guaranteed to be a plane, so that the bottom surface of the voice coil cannot collide with the magnetic shield when the micro-speaker works, noise is avoided, acoustic performance of the micro-speaker is guaranteed, and phenomena that the service life of the micro-speaker is influenced due to scattered coils, voice coil dropping and the like caused by collision of the voice coil and the magnetic shield are avoided.

Description

Micro-speaker

Technical Field

The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.

Background

With the advent of the mobile internet era, the number of intelligent mobile devices has been continuously increased, and the micro-speakers and receivers used in mobile terminals at present are mostly moving-coil speakers.

The moving-coil loudspeaker comprises a magnetic circuit system, a centering support piece, a vibration system and a basin frame for accommodating and fixing the magnetic circuit system and the vibration system, wherein the vibration system comprises a vibrating diaphragm assembly and a voice coil connected with the vibrating diaphragm assembly, and the vibrating diaphragm assembly comprises a sound membrane and a dome connected with the sound membrane; the voice coil and the basin frame are connected to the centering piece, the effect of voice coil polarization is improved, for convenient wiring, the voice coil lead wire welds on the centering piece pad, because the wire that goes into of voice coil needs to be drawn forth from the inboard edge of voice coil body to the outside edge of voice coil body, thereby weld with the pad of centering piece, so the voice coil wire is gone into the top surface that the wire can make the voice coil uneven, when voice coil and the bonding of ball top, the bonding surface is uneven, seriously influence the bonding effect, lead to the bonding infirm, the reliability is lower, the phenomenon that voice coil and ball top separation can appear after long-term tired use, can lead to the voice coil to go into the voice coil bottom region that the wire corresponds simultaneously and the distance of magnetic cover reduces, the during the micro speaker during operation, can collide with the magnetic cover, lead to producing the noise and appear, during severe, still can appear scattered circle, fall the phenomenon that influences micro speaker life-span such as voice coil.

Disclosure of utility model

The utility model mainly aims to provide a miniature loudspeaker with a novel structure, and aims to solve the problem that the existing miniature loudspeaker is poor in structural stability.

In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker, comprising:

The ball top comprises a main body, wherein the main body is provided with a lower convex ring protruding downwards, and the lower convex ring is provided with a plurality of notches;

the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil includes the body and connects the first lead wire of body, the top surface of body is connected the bulge loop down, the one end of first lead wire is connected the medial surface of body, the other end of first lead wire is passed through the breach is spanned the top of body and is extended to the outside of body.

In one embodiment, the top surface of the body is adhesively connected to the bottom surface of the lower collar.

In one embodiment, the notch forms a glue receiving structure for receiving glue.

In one embodiment, the glue solution located in the notch covers at least a part of the area of the first lead.

In one embodiment, the height of the notch is greater than or equal to the diameter of the first lead.

In one embodiment, the other end of the first lead extends from the notch to be close to the outer wall of the body.

In one embodiment, a portion of the first lead is bonded to the outer wall of the body.

In an embodiment, the lower convex ring is a solid structure or a hollow convex hull structure.

In an embodiment, the lower convex ring is rectangular frame-shaped, and the frame and/or corner of the lower convex ring is provided with the notch.

In one embodiment, the main body is provided with a concave portion.

The utility model has the beneficial effects that: the lower convex ring with a notch is arranged on the dome to be connected with the voice coil, the lower convex ring can improve the structural strength of the dome and reduce the risk of large deformation of the dome; meanwhile, the voice coil can be sunk into the magnetic gap of the magnetic circuit system to a greater extent, so that the utilization rate of the magnetic circuit system is improved, and the performance of the micro-speaker is improved; more importantly, the notch on the lower convex ring can avoid the first lead, so that the body of the voice coil can be connected with the lower convex ring in a plane, the stability and the reliability of connection between the dome and the voice coil are guaranteed, and the risk of accidental separation of the voice coil and the dome is reduced; in addition, the bottom surface of the body of the voice coil can be guaranteed to be a plane, so that the bottom surface of the voice coil cannot collide with the magnetic shield when the micro-speaker works, noise is avoided, acoustic performance of the micro-speaker is guaranteed, and phenomena that the service life of the micro-speaker is influenced due to scattered coils, voice coil dropping and the like caused by collision of the voice coil and the magnetic shield are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a cross-sectional view of a micro-speaker according to a first embodiment of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

Fig. 3 is a schematic structural diagram of a diaphragm assembly in a micro-speaker according to a first embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of a diaphragm assembly in a micro-speaker with another structure according to the first embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. A magnetic circuit system;

3. A sound membrane;

4. A dome; 41. a main body; 42. a lower convex ring; 43. a notch; 44. a concave portion;

5. a voice coil; 51. a body; 52. a first lead;

6. centering support.

Detailed Description

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to merely for explaining a relative positional relationship, a movement condition, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: the micro loudspeaker can be applied to electronic equipment such as mobile phones, intelligent watches, computers and the like.

As shown in fig. 1 to 3, the micro-speaker comprises a basin frame 1, and a vibration system and a magnetic circuit system 2 which are respectively connected with the basin frame 1, wherein the vibration system comprises a vibrating diaphragm assembly and a voice coil 5, the vibrating diaphragm assembly comprises a sound membrane 3 and a dome 4 connected with the sound membrane 3, and the voice coil 5 is connected with the dome 4; the magnetic circuit system 2 comprises a magnetic shield, a central magnetic structure and a side magnetic structure, wherein the central magnetic structure and the side magnetic structure are arranged on the magnetic shield, and a magnetic gap for the voice coil 5 to move is formed between the central magnetic structure and the side magnetic structure.

The sound membrane 3 comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a window is arranged on the inner fixing part, the dome 4 is connected with the inner fixing part and seals the window, and the outer fixing part is connected with the basin frame 1. Specifically, the dome 4 includes a main body 41, the main body 41 has a downward protruding lower convex ring 42, the lower convex ring 42 has a plurality of notches 43, and the top surface of the main body 41 is connected to the bottom surface of the inner fixing portion, or the bottom surface of the main body 41 is connected to the top surface of the inner fixing portion.

The lower convex ring 42 is of a solid structure or a hollow convex hull structure, and when the lower convex ring 42 is of a hollow convex hull structure, the lower convex ring 42 can be of a stamping structure formed by stamping or an injection structure formed by injection molding.

The voice coil 5 comprises a body 51 and a first lead 52 and a second lead connected with the body 51, wherein the top surface of the body 51 is connected with the lower convex ring 42, specifically, the top surface of the body 51 is connected with the bottom surface of the lower convex ring 42; one end of the first lead 52 is connected to the inner side surface of the body 51, and the other end of the first lead 52 extends to the outside of the body 51 across the upper side of the body 51 via the notch 43. In this embodiment, the connection and conduction point between the second lead and the body 51 is located on the outer side surface of the body 51, however, in other embodiments, the connection and conduction point between the second lead and the body 51 may be located on the inner side surface of the body 51, and in this case, the second lead may span over the body 51 and extend to the outer side of the body 51 through the notch 43, like the first lead 52.

In this embodiment, the top surface of the body 51 is adhesively connected to the bottom surface of the lower convex ring 42. Preferably, the notch 43 forms a glue containing structure capable of containing glue, so that the volume of the glue can be increased, thereby increasing the fixing effect of the dome 4 and the voice coil 5 and further improving the structural stability of the micro-speaker.

In one embodiment, the glue solution in the notch 43 covers at least a portion of the area of the first lead 52. The glue solution in the notch 43 covers the first lead 52, which can better protect the first lead 52 of the voice coil 5, prevent the first lead 52 from being broken due to long-term pulling force in long-term fatigue or reliability test, and facilitate the improvement of the reliability allowance of the micro-speaker.

The height of the notch 43 is greater than or equal to the diameter of the first lead 52. That is, the avoiding height of the notch 43 is greater than or equal to the diameter of the first lead 52, so that the bottom surface of the lower bulge loop 42 near the first lead 52 is ensured to be bonded and fixed with the top surface of the body 51 of the voice coil 5 in a planar manner.

The other end of the first lead 52 extends from the notch 43 and is close to the outer wall of the body 51, so that the first lead 52 can be prevented from colliding with other parts of the micro-speaker during operation of the micro-speaker.

Optionally, the partial area of the first lead 52 is adhered to and fixed to the outer wall of the body 51, so that the first lead 52 can be better fixed, and fatigue caused by long-term shaking of the partial area of the first lead 52 is avoided.

The lower convex ring 42 is rectangular, and the frame and/or corner of the lower convex ring 42 is provided with the notch 43. Alternatively, only one corner of the lower convex ring 42 is provided with the notch 43, as shown in fig. 3, however, it is also possible that the four corners of the lower convex ring 42 are respectively provided with the notch 43, as shown in fig. 4, and in addition, the notch 43 is allowed to be provided on the short frame and/or the long frame of the lower convex ring 42.

As shown in fig. 1, 3 and 4, in order to further increase the structural strength of the dome 4, the main body 41 may be optionally provided with a concave portion 44.

As shown in fig. 1, the micro-speaker further includes a centering support 6, the centering support 6 connects the voice coil 5 with the frame 1, a conducting circuit is disposed on the centering support 6, and the other end of the first lead 52 extends to the outer side of the body 51 and is welded and conducted with the conducting circuit. The conductive line includes a conductive line connected to a pad, and the other end of the first lead 52 is soldered to the pad.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. Miniature speaker, its characterized in that: comprising

2. A micro-speaker as claimed in claim 1, wherein: the top surface of the body is connected with the bottom surface of the lower convex ring in an adhesive mode.

3. A micro-speaker as claimed in claim 2, wherein: the gap forms a glue containing structure for containing glue solution.

4. A micro-speaker as claimed in claim 3, wherein: the glue solution positioned in the notch covers at least part of the area of the first lead.

5. A micro-speaker as claimed in claim 1, wherein: the height of the notch is greater than or equal to the diameter of the first lead.

6. A micro-speaker as claimed in claim 1, wherein: the other end of the first lead extends out of the notch and is close to the outer wall of the body.

7. A micro-speaker as claimed in claim 6, wherein: and a part of the area of the first lead is adhered and fixed with the outer wall of the body.

8. A micro-speaker as claimed in claim 1, wherein: the lower convex ring is of a solid structure or a hollow convex hull structure.

9. A micro-speaker as claimed in claim 1, wherein: the lower convex ring is rectangular, and the notch is arranged at the side frame and/or the corner of the lower convex ring.

10. A micro-speaker as claimed in claim 1, wherein: the main body is provided with a concave part.