CN220234932U - Micro-speaker unit and micro-speaker module - Google Patents

Abstract

The utility model discloses a micro-speaker unit and a micro-speaker module, wherein the micro-speaker unit comprises a vibrating diaphragm and a ball top, the vibrating diaphragm comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, and at least two windows are arranged on the inner fixing part; the ball tops are connected with the inner fixing part, the number of the ball tops is multiple, and the ball tops are arranged in one-to-one correspondence with the fenestration; and fixing strips are formed between two adjacent windowed holes and are respectively connected and fixed with the two dome covers covering the two adjacent windowed holes. The large-size dome is split into at least two small-size domes, and the vibrating diaphragm is formed into the fixing strip connected with the small-size domes, so that the size of the dome is effectively reduced, the deformation problem easily caused by the large dome is solved, the flatness of the vibration system of the micro-speaker unit is guaranteed, and the acoustic performance of the micro-speaker unit is guaranteed.

Description

Micro-speaker unit and micro-speaker module

Technical Field

The utility model relates to the technical field of electroacoustic transducers, in particular to a micro-speaker unit and a micro-speaker module.

Background

The vibrating diaphragm used by the electroacoustic transducer in the prior art especially refers to the vibrating diaphragm positioned at the position of the sound outlet, so as to drive air to vibrate to obtain more remarkable sound volume and sound quality effects, the vibrating diaphragm is provided with a folded ring part, and the vibrating action of the vibrating diaphragm is enhanced through the elastic deformation action formed by the curved surface formed by the folded ring part.

When the size of the miniature loudspeaker unit is larger, the design of a single dome is adopted, so that the dome is larger in size, deformation is easy to occur in the production and transportation processes, the vibration system is uneven, the vibration system collides with other parts, noise is generated, and the sound generating unit (namely the miniature loudspeaker unit) is invalid when serious.

Disclosure of Invention

The utility model mainly aims to provide a miniature loudspeaker unit and a miniature loudspeaker module with novel structures, and aims to solve the problem that a dome in the traditional miniature loudspeaker unit is easy to deform.

In order to solve the technical problems, the first technical scheme adopted by the utility model is as follows: a micro-speaker unit comprising:

the vibrating diaphragm comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, wherein at least two open windows are arranged on the inner fixing part;

the ball tops are connected with the inner fixing part, the number of the ball tops is multiple, and the ball tops are arranged in one-to-one correspondence with the fenestration;

and fixing strips are formed between two adjacent windowed holes and are respectively connected and fixed with the two dome covers covering the two adjacent windowed holes.

Further, the ball top is respectively connected with the inner fixing part and the fixing strip in an adhesive manner.

Further, the number of the windows is two, and the fixing strips are arranged at the middle points of the long sides of the inner fixing parts.

Further, the number of the windows is three, one fixing strip is arranged corresponding to 1/3 of the long side edge of the inner fixing part, and the other fixing strip is arranged corresponding to 2/3 of the long side edge of the inner fixing part.

Further, the fixing strip and the inner fixing part are of an integrated structure formed by integrally processing.

Further, the bottom surface of the fixing strip is flush with the bottom surface of the inner fixing portion, and the top surface of the fixing strip is flush with the top surface of the inner fixing portion.

Further, the basin frame and the magnetic circuit assembly arranged on the basin frame are further included, the magnetic circuit assembly comprises a central washer, and an avoidance groove for avoiding the fixing strip is formed in the top surface of the central washer.

Further, two adjacent dome joints are fixedly connected.

Further, in two adjacent ball tops, a first press edge is arranged on one ball top, a second press edge is arranged on the other ball top, the second press edge is located above the first press edge, and the first press edge is fixedly connected with the second press edge.

In order to solve the technical problems, the second technical scheme adopted by the utility model is as follows: the micro-speaker module comprises the micro-speaker unit.

The utility model has the beneficial effects that: the large-size dome is split into at least two small-size domes, and the vibrating diaphragm is formed into the fixing strip connected with the small-size domes, so that the size of the dome is effectively reduced, the deformation problem easily caused by the large dome is solved, the flatness of the vibration system of the micro-speaker unit is guaranteed, and the acoustic performance of the micro-speaker unit is guaranteed.

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 an exploded view of a micro speaker unit according to a first embodiment of the present utility model;

fig. 2 is a cross-sectional view of a micro speaker unit according to a first embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a part of the structure of a micro-speaker unit according to a second embodiment of the present utility model;

fig. 5 is a cross-sectional view of a micro speaker unit according to a second embodiment of the present utility model;

FIG. 6 is an enlarged view at B in FIG. 5;

fig. 7 is a schematic structural diagram of a part of the structure of a micro speaker unit according to a third embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a vibrating diaphragm; 21. an inner fixing part; 211. windowing; 212. a fixing strip; 22. a ring folding part; 23. an outer fixing part;

3. a voice coil;

4. a dome; 41. a first blank holder; 42. a second blank holder;

5. a magnetic shield;

6. edge magnetic steel;

7. a center magnetic steel;

8. a central washer; 81. an avoidance groove;

9. and (5) a secondary membrane.

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, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that 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 this application, unless specifically stated 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.

Example 1

Referring to fig. 1 to 3, a first embodiment of the present utility model is as follows: the miniature loudspeaker unit comprises a basin frame 1, and a magnetic circuit assembly and a vibration assembly which are respectively arranged on the basin frame 1;

the vibration assembly comprises a vibrating diaphragm 2, a voice coil 3 and a top ball 4, wherein the vibrating diaphragm 2 comprises an inner fixing part 21, a folded ring part 22 and an outer fixing part 23 which are sequentially connected from inside to outside, the top ball 4 is fixedly connected with the inner fixing part 21, the top ball 4 is positioned at the outer side of the inner fixing part 21, the voice coil 3 is fixedly arranged at the inner side of the inner fixing part 21, and the outer fixing part 23 is fixedly connected with the basin frame 1; the magnetic circuit assembly comprises a magnetic shield 5, side magnetic steels 6, a center magnetic steel 7, a center washer 8 and side washers, wherein the side magnetic steels 6 and the center magnetic steel 7 are respectively arranged on the magnetic shield 5, the center washer 8 is arranged on the top surface of the center magnetic steel 7, bian Huasi is arranged on the basin frame 1 and fixedly connected with the top surface of the side magnetic steels 6, the number of the side magnetic steels 6 is multiple, the center magnetic steel 7 is arranged between at least one group of two side magnetic steels 6 which are oppositely arranged, and a magnetic gap matched with the voice coil 3 is formed between the center magnetic steel 7 and the side magnetic steels 6.

At least two windows 211 are arranged on the inner fixing part 21, and the spherical roof 4 covers the windows 211; the number of the ball tops 4 is a plurality, and the ball tops 4 are arranged in one-to-one correspondence with the window 211; a fixing strip 212 is formed between two adjacent windows 211, the fixing strip 212 is respectively connected and fixed with two dome 4 covering the two adjacent windows 211, and the dome 4 is respectively connected with the inner fixing part 21 and the fixing strip 212 in an adhesive manner so as to realize sealing of the windows 211.

In this embodiment, the number of the windows 211 is two, the fixing strips 212 are disposed at the midpoints of the long sides of the inner fixing portion 21, and it is needless to say that the fixing strips 212 may be disposed at other positions corresponding to the long sides of the inner fixing portion 21. In other embodiments, the number of the windows 211 may be three or more, and may be specifically set according to actual needs.

For easy processing and production, the fixing strip 212 and the inner fixing portion 21 are integrally formed as a one-piece structure. Optionally, the bottom surface of the fixing strip 212 is flush with the bottom surface of the inner fixing portion 21, and the top surface of the fixing strip 212 is flush with the top surface of the inner fixing portion 21. In other embodiments, the fixing strip 212 and the inner fixing portion 21 may be made of different materials. Meanwhile, the fixing strips 212 and the vibrating diaphragm 2 may be in a split type structure, and the fixing strips 212 and the vibrating diaphragm 2 are connected and fixed in the subsequent production process.

In order to avoid that the fixing bar 212 collides with the central washer 8 to cause noise of the micro-speaker unit when the vibration assembly vibrates, optionally, an avoidance groove 81 for avoiding the fixing bar 212 is formed on the top surface of the central washer 8.

As a preferred embodiment, two adjacent dome 4 are fixedly connected. The ball tops 4 are connected and fixed with each other, so that the structural stability of the vibration assembly can be improved, and the consistency of the actions of the ball tops 4 can be better ensured, thereby ensuring the acoustic performance of the micro-speaker unit. For example, glue is filled in the gap between two adjacent ball tops 4, so that connection and fixation between the two adjacent ball tops 4 are realized.

Optionally, the vibration assembly further includes an auxiliary membrane 9 connecting the frame 1 and the voice coil 3, where the auxiliary membrane 9 may perform a correction function on the voice coil 3. In other embodiments, it is also possible to use a centering plate instead of the secondary membrane 9 or in combination with the secondary membrane 9.

The embodiment also provides a micro speaker module which can be applied to electronic equipment such as a mobile phone, a notebook computer, a hearing aid, a smart watch, a portable game machine and the like. The miniature loudspeaker module comprises a shell and a sound generating unit arranged in the shell, wherein the sound generating unit is the miniature loudspeaker unit.

Example two

Referring to fig. 4 to 6, a second embodiment of the present utility model is a further improvement based on the first embodiment, and is different from the first embodiment in that: in two adjacent ball tops 4, a first blank holder 41 is arranged on one ball top 4, a second blank holder 42 is arranged on the other ball top 4, the second blank holder 42 is positioned above the first blank holder 41, and the first blank holder 41 is fixedly connected with the second blank holder 42.

Specifically, the top surface of the first pressing edge 41 is adhesively connected to the bottom surface of the second pressing edge 42.

Example III

Referring to fig. 7, a third embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: the number of the windows 211 on the inner fixing portion 21 of the diaphragm 2 is three, and correspondingly, the number of the dome 4 is also three.

It is easy to understand that the number of the fixing bars 212 is two, and as a preferred embodiment, one fixing bar 212 is disposed corresponding to 1/3 of the long side of the inner fixing portion 21, and the other fixing bar 212 is disposed corresponding to 2/3 of the long side of the inner fixing portion 21.

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 (10)

1. Miniature speaker unit, its characterized in that: comprising

The vibrating diaphragm comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, wherein at least two open windows are arranged on the inner fixing part;

the ball tops are connected with the inner fixing part, the number of the ball tops is multiple, and the ball tops are arranged in one-to-one correspondence with the fenestration;

and fixing strips are formed between two adjacent windowed holes and are respectively connected and fixed with the two dome covers covering the two adjacent windowed holes.

2. The micro-speaker unit according to claim 1, wherein: the ball top is respectively connected with the inner fixing part and the fixing strip in an adhesive mode.

3. The micro-speaker unit according to claim 1, wherein: the number of the windows is two, and the fixing strips are arranged at the middle points of the long sides of the inner fixing parts.

4. The micro-speaker unit according to claim 1, wherein: the number of the windows is three, one fixing strip is arranged corresponding to 1/3 of the long side edge of the inner fixing part, and the other fixing strip is arranged corresponding to 2/3 of the long side edge of the inner fixing part.

5. The micro-speaker unit according to claim 1, wherein: the fixing strip and the inner fixing part are of an integrated structure formed by integrally machining.

6. The micro-speaker unit according to claim 5, wherein: the bottom surface of the fixing strip is flush with the bottom surface of the inner fixing portion, and the top surface of the fixing strip is flush with the top surface of the inner fixing portion.

7. The micro-speaker unit according to claim 1, wherein: the basin comprises a basin frame and a magnetic circuit assembly arranged on the basin frame, wherein the magnetic circuit assembly comprises a central washer, and an avoidance groove for avoiding the fixing strip is formed in the top surface of the central washer.

8. The micro-speaker unit according to claim 1, wherein: and two adjacent dome tops are fixedly connected.

9. The micro-speaker unit according to claim 8, wherein: in two adjacent ball tops, one ball top is provided with a first blank holder, and the other ball top is provided with a second blank holder, the second blank holder is located the top of first blank holder, first blank holder with the second blank holder is connected fixedly.

10. Miniature speaker module, its characterized in that: comprising a micro-speaker unit according to any of claims 1-9.