CN220606064U - Micro-speaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises voice coils and a top ball, wherein the voice coils with the number greater than or equal to three are arranged in a row, two adjacent voice coils are connected and fixed with each other, the top ball is positioned above the voice coils, the top ball is provided with a lower convex ring structure, the lower convex ring structure is formed by connecting a plurality of convex ribs end to end, the number of the lower convex ring structure is less than that of the voice coils, and the top of the voice coils is connected with the bottom of the lower convex ring structure. The voice coil is replaced and supported by the lower convex ring structure on the top of the ball, which is beneficial to simplifying the manufacturing process of the micro-speaker and reducing the manufacturing cost of the micro-speaker. In addition, the lower convex ring structure can improve the structural strength of the dome, and is beneficial to ensuring the performance of the micro-speaker. In addition, the whole weight of the vibration system can be reduced by eliminating the support voice coil, and the sensitivity of the micro-speaker is improved. The number of the lower convex ring structures is smaller than that of the voice coils, so that the whole weight of the vibration system is further lightened, and the sensitivity of the micro-speaker is further improved.

Description

Micro-speaker

Technical Field

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

Background

The micro-speaker is widely applied to portable electronic devices such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, performance requirements for the micro-speakers used thereon are increasing.

In order to promote micro-speaker's performance, prior art begins to adopt many voice coils design, simultaneously, in order to make the voice coil loudspeaker voice coil be located the position of magnetic gap more suitable, partial micro-speaker can add between voice coil loudspeaker voice coil and vibrating diaphragm subassembly and support the voice coil loudspeaker voice coil (when micro-speaker work, the voice coil loudspeaker voice coil circular telegram, support the voice coil loudspeaker voice coil and do not circular telegram), through the adjustment height of supporting the voice coil loudspeaker voice coil, adjusts the position of voice coil loudspeaker voice coil at magnetic gap, makes micro-speaker's performance further promote.

Currently, in the miniature loudspeaker of many voice coil loudspeaker voice coil architectures, voice coil loudspeaker voice coil and support voice coil loudspeaker voice coil are generally one-to-one setting, and when the quantity of voice coil loudspeaker voice coil is great, the quantity of the support voice coil loudspeaker voice coil that corresponds is also more, and the increase of supporting voice coil loudspeaker voice coil quantity can lead to the production process to increase, is unfavorable for the reduction of cost, simultaneously, the increase of supporting voice coil loudspeaker voice coil also can increase vibration system's overall weight, restricts miniature loudspeaker and further promotes performance sensitivity.

Disclosure of Invention

The utility model solves the technical problems that: a high sensitivity low cost micro speaker is provided.

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

the voice coils are arranged in a row, and two adjacent voice coils are connected and fixed with each other;

the ball top is positioned above the voice coil, the ball top is provided with a lower convex ring structure, the lower convex ring structure is formed by connecting a plurality of convex ribs end to end, and the number of the lower convex ring structures is less than that of the voice coil;

the top of voice coil loudspeaker voice coil is connected the bottom of lower bulge loop structure.

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

In one embodiment, at least one of the ribs connects two of the voice coils simultaneously.

In an embodiment, the combined structure formed by connecting the dome and the voice coil is an axisymmetric structure.

In an embodiment, the number of the voice coils is three, the number of the lower convex ring structures is one, and the voice coil located in the middle is connected with the lower convex ring structures.

In an embodiment, one side edges of the voice coils at two sides are respectively connected with the lower convex ring structure.

In an embodiment, the number of the voice coils is three, the number of the lower convex ring structures is one, and the lower convex ring structures are connected with a group of opposite sides of the voice coils in the middle and one side of the voice coils at two sides.

In an embodiment, the number of the voice coils is three, the number of the lower convex ring structures is two, and the voice coils positioned at two sides are connected with the two lower convex ring structures in a one-to-one correspondence manner.

In an embodiment, the number of the voice coils is four, the number of the lower convex ring structures is two, the voice coils at two sides are connected with the two lower convex ring structures in a one-to-one correspondence manner, or the two voice coils at the center are connected with the two lower convex ring structures in a one-to-one correspondence manner.

In an embodiment, the number of the voice coils is five, the number of the lower convex ring structures is two, and two lower convex ring structures are arranged at intervals by one or three voice coils; or the number of the lower convex ring structures is three, and the three voice coils positioned in the center are connected with the three lower convex ring structures in a one-to-one correspondence manner.

The utility model has the beneficial effects that: the miniature loudspeaker has a simple and novel structure, and the lower convex ring structure on the top of the ball is used for replacing and supporting the voice coil, so that the manufacturing process of the miniature loudspeaker is simplified, and the manufacturing cost of the miniature loudspeaker is reduced. In addition, the lower convex ring structure can improve the structural strength of the dome, and is beneficial to ensuring the performance of the micro-speaker. In addition, the whole weight of the vibration system can be reduced by eliminating the support voice coil, and the sensitivity of the micro-speaker is improved. The number of the lower convex ring structures is less than that of the voice coils, and the lower convex ring structures and the voice coils are not in one-to-one correspondence, so that the whole weight of the vibration system is further lightened, and the sensitivity of the miniature loudspeaker is further improved.

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 a quarter sectional view showing a part of the structure of a micro-speaker according to a first embodiment of the present utility model;

fig. 3 is a schematic diagram of a dome of a micro-speaker according to a first embodiment of the present utility model;

fig. 4 is a cross-sectional view of a micro-speaker according to a second embodiment of the present utility model;

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

fig. 6 is a quarter sectional view showing a partial structure of a micro speaker according to a third embodiment of the present utility model;

fig. 7 is a schematic diagram of a dome of a micro-speaker according to a third embodiment of the present utility model;

fig. 8 is a cross-sectional view of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 9 is a quarter sectional view showing a partial structure of a micro speaker according to a fourth embodiment of the present utility model;

fig. 10 is a cross-sectional view of a micro-speaker according to a fifth embodiment of the present utility model;

fig. 11 is a quarter sectional view showing a part of the structure of a micro speaker according to a fifth embodiment of the present utility model;

fig. 12 is a schematic diagram of the dome of a micro-speaker according to a fifth embodiment of the present utility model;

fig. 13 is a schematic structural view of a part of the structure of a micro-speaker according to a sixth embodiment of the present utility model;

fig. 14 is a schematic diagram of the dome of a micro-speaker according to a sixth embodiment of the present utility model;

fig. 15 is a schematic structural view of a part of the structure of a micro speaker according to a seventh embodiment of the present utility model;

fig. 16 is a schematic diagram of a dome of a micro speaker according to a seventh embodiment of the present utility model;

fig. 17 is a schematic structural view of a part of the structure of a micro speaker according to an eighth embodiment of the present utility model;

fig. 18 is a schematic diagram of a dome of a micro-speaker according to an eighth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a sound membrane;

4. a dome; 41. a lower convex ring structure;

5. and a voice coil.

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 micro-speaker can be applied to electronic equipment such as mobile phones, notebook computers, hearing aids and the like.

The miniature loudspeaker comprises a basin frame 1, and a vibration assembly and a magnetic circuit assembly 2 which are respectively connected with the basin frame 1, wherein the vibration assembly comprises a vibrating diaphragm assembly and a plurality of voice coils 5, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coils 5 to move; the number of the voice coils 5 is greater than or equal to three, the voice coils 5 with the number greater than or equal to three are arranged in a row, and two adjacent voice coils 5 are connected and fixed with each other; the vibrating diaphragm assembly comprises a sound diaphragm 3 and a dome 4 connected to the sound diaphragm 3, the dome 4 is located above the voice coil 5, the dome 4 is provided with a lower convex ring structure 41, the lower convex ring structure 41 is formed by connecting a plurality of convex ribs end to end, and the number of the lower convex ring structures 41 is smaller than that of the voice coil 5; the top of the voice coil 5 is connected to the bottom of the lower collar structure 41.

There are many specific measures for connecting and fixing the adjacent two voice coils 5 to each other, such as connection by glue, connection by double-sided offset paper, connection by self-adhesive layer of the enamel wire itself for winding the voice coils 5, and the like. The voice coil 5 and the lower collar structure 41 may be connected by glue, by double sided tape, or by other means.

In order to balance the stress of the vibration assembly and thereby improve the polarization of the voice coil 5, it is preferable that the combined structure formed by connecting the dome 4 and the voice coil 5 is an axisymmetric structure.

Alternatively, the lower convex ring structure 41 is a hollow convex hull, and the hollow convex hull may be a stamped structure formed by stamping. Compared with a solid structure, the hollow convex hull not only can reduce the consumption of raw materials for producing the dome 4 and save the cost of raw materials, but also can lighten the whole weight of the vibration component and further improve the performance of the miniature loudspeaker.

In this embodiment, the number of the voice coils 5 is three, the number of the lower convex ring structures 41 is one, and the voice coil 5 located in the middle is connected to the lower convex ring structures 41.

It should be noted that, in other embodiments, the number of the voice coils 5 may be three, four, five or even more.

Example two

Referring to fig. 4, a second 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 lower collar structure 41 is a solid structure. Compared to hollow protruding structures, solid protruding structures have the advantage of a great structural strength, and the risk of undesired deformations of the dome 4 is lower and the service life is longer.

Example III

Referring to fig. 5 to 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: in the lower convex ring structure 41, at least one convex rib is connected with two voice coils 5 at the same time.

In this embodiment, one side of the voice coil 5 located at two sides is connected to the lower convex ring structure 41 respectively. Specifically, the lower convex ring structure 41 is formed by connecting four convex ribs end to end, wherein any one of a group of two convex ribs arranged oppositely is respectively connected with adjacent edges of two adjacent voice coils 5.

Therefore, the total connection area of the voice coil 5 and the lower convex ring structure 41 can be effectively increased, the connection effect of the voice coil 5 and the dome 4 is improved, the structural stability of the vibration assembly is enhanced, the service life of the micro loudspeaker is prolonged, and meanwhile, the convex ribs are better in structural reinforcement effect on the dome 4 due to the fact that the convex ribs connecting the two voice coils 5 are larger in width.

Example IV

Referring to fig. 8 and 9, a fourth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is three, the number of the lower convex ring structures 41 is one, and the lower convex ring structures 41 connect a group of opposite sides of the voice coils 5 located in the middle and a side of the voice coils 5 located at both sides. In this way, the dome 4 can be directly connected to each of the voice coils 5, which contributes to improving the structural stability of the vibration assembly.

Example five

Referring to fig. 10 to 12, a fifth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is three, the number of the lower convex ring structures 41 is two, and the voice coils 5 located at two sides are connected with the two lower convex ring structures 41 in a one-to-one correspondence manner.

The total area that voice coil 5 with lower bulge loop structure 41 is connected is big, is favorable to improving voice coil loudspeaker voice coil 5 with the connection effect of dome 4, reinforcing vibration subassembly's structural stability.

Example six

Referring to fig. 13 and 14, a sixth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is four, the number of the lower convex ring structures 41 is two, and the voice coils 5 located at two sides are connected with the two lower convex ring structures 41 in a one-to-one correspondence manner.

Example seven

Referring to fig. 15 and 16, a sixth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is four, the number of the lower convex ring structures 41 is two, and the two voice coils 5 located in the center are connected with the two lower convex ring structures 41 in a one-to-one correspondence manner.

Preferably, the two lower convex ring structures 41 are connected to each other, so as to form a substantially rectangular structure, and convex ribs located in the center of the rectangular structure are respectively connected to adjacent sides of the two voice coils 5.

Example eight

Referring to fig. 17 and 18, a sixth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is five, the number of the lower convex ring structures 41 is two, and two lower convex ring structures 41 are spaced apart by one voice coil 5.

Of course, in a parallel embodiment, two lower collar structures 41 spaced three of the voice coils 5 are also possible.

In addition, when the number of the voice coils 5 is five, the number of the lower convex ring structures 41 may be three, and at this time, the three voice coils 5 located at the center are connected to the three lower convex ring structures 41 in a one-to-one correspondence.

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, its characterized in that: comprising

The voice coils are arranged in a row, and two adjacent voice coils are connected and fixed with each other;

the ball top is positioned above the voice coil, the ball top is provided with a lower convex ring structure, the lower convex ring structure is formed by connecting a plurality of convex ribs end to end, and the number of the lower convex ring structures is less than that of the voice coil;

the top of voice coil loudspeaker voice coil is connected the bottom of lower bulge loop structure.

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

3. A micro-speaker as claimed in claim 1, wherein: at least one of the ribs is connected with two voice coils at the same time.

4. A micro-speaker as claimed in claim 1, wherein: the combined structure formed by connecting the dome and the voice coil is an axisymmetric structure.

5. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the lower convex ring structures is one, and the voice coils in the middle are connected with the lower convex ring structures.

6. A micro-speaker as claimed in claim 5, wherein: and one side edges of the voice coils positioned at two sides are respectively connected with the lower convex ring structure.

7. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the lower convex ring structures is one, and the lower convex ring structures are connected with a group of opposite sides of the voice coils in the middle and one side of the voice coils at two sides.

8. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the lower convex ring structures is two, and the voice coils positioned on two sides are connected with the two lower convex ring structures in a one-to-one correspondence manner.

9. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is four, the number of the lower convex ring structures is two, the voice coils positioned at two sides are connected with the two lower convex ring structures in a one-to-one correspondence manner, or the two voice coils positioned at the center are connected with the two lower convex ring structures in a one-to-one correspondence manner.

10. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is five, the number of the lower convex ring structures is two, and the two lower convex ring structures are arranged at intervals by one or three voice coils; or the number of the lower convex ring structures is three, and the three voice coils positioned in the center are connected with the three lower convex ring structures in a one-to-one correspondence manner.