CN220606065U - Micro-speaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a vibrating diaphragm assembly, a framework and a plurality of voice coils, wherein the top of the framework is connected with the vibrating diaphragm assembly, and the top of the voice coils is connected with the bottom of the framework; the framework is provided with a first air flow channel which is communicated with the inner side cavities of two adjacent voice coils; and/or the framework is provided with a second airflow channel, and the second airflow channel is communicated with the inner cavity of the voice coil and the outer space of the voice coil. The skeleton can adjust the position of voice coil loudspeaker voice coil in magnetic gap of magnetic circuit subassembly, can improve micro-speaker distortion phenomenon effectively, makes micro-speaker's BL more symmetrical, does benefit to the performance that promotes micro-speaker. The first air flow channel can enable the inner side cavities of the two adjacent voice coils to be communicated, air in the inner side cavities of the adjacent voice coils is enabled to circulate, the second air flow channel can enable the inner side cavities of the voice coils to be communicated with the outer side space, air can flow on the inner side and the outer side of the voice coils, and then high-frequency sensitivity of the micro-speaker is 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, and the voice coil loudspeaker voice coil is through driving vibrating diaphragm motion to carry out the sound production, and many voice coils separate two parts with micro-speaker's inner space, outside space and a plurality of inboard cavity promptly, every the voice coil loudspeaker voice coil is all corresponding one the inboard cavity, at micro-speaker sound production in-process, two adjacent the internal air current of inboard cavity can't circulate each other to inside cavity and outside space can't circulate each other yet, so that micro-speaker's high frequency sensitivity receives certain influence.

Disclosure of Invention

The technical problems solved by the utility model are as follows: a micro-speaker with high frequency sensitivity is provided.

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

a diaphragm assembly;

the top of the framework is connected with the vibrating diaphragm assembly;

the voice coils are positioned below the framework, and the top parts of the voice coils are connected with the bottom parts of the framework;

the framework is provided with a first air flow channel which is communicated with the inner side cavities of the two adjacent voice coils; and/or, a second airflow channel is arranged on the framework, and the second airflow channel is communicated with the inner side cavity of the voice coil and the outer side space of the voice coil.

In one embodiment, the skeleton is an axisymmetric structure.

In one embodiment, at least one set of two adjacent voice coils are in contact with each other, and the first air flow channel is located above the adjacent edges of the two adjacent voice coils.

In an embodiment, the number of voice coils is two, the whole skeleton is the style of calligraphy, the skeleton includes three vertical muscle and two horizontal muscle, horizontal muscle with vertical muscle links to each other, first air current channel is located in the middle on the vertical muscle.

In one embodiment, the first air flow channel is disposed corresponding to a central region of the centrally located longitudinal rib.

In one embodiment, a plurality of the first air flow channels are provided on the longitudinal ribs located in the middle.

In one embodiment, the length of the first air flow channel is equal to the length of the centrally located longitudinal rib.

In one embodiment, a plurality of voice coils are arranged in a row and are contacted with each other to form a voice coil assembly, and the framework is provided with the second airflow channel corresponding to the outer side edge of the voice coil assembly; and/or, the framework is provided with the second air flow channel corresponding to the corner of the voice coil assembly.

In one embodiment, the number of the voice coils is two, the whole framework is in a shape like a Chinese character 'ri', and the framework comprises three longitudinal ribs and two transverse ribs, and the transverse ribs are connected with the longitudinal ribs; the longitudinal ribs positioned on the two sides are respectively provided with the second airflow channels; and/or the connection parts of the transverse ribs and the longitudinal ribs positioned at the two sides are respectively provided with the second air flow channels.

In one embodiment, the number of voice coils is three.

The utility model has the beneficial effects that: the miniature loudspeaker has a simple and novel structure, the framework can adjust the position of the voice coil in the magnetic gap of the magnetic circuit assembly, the distortion phenomenon of the miniature loudspeaker can be effectively improved, the BL of the miniature loudspeaker is more symmetrical, and the performance of the miniature loudspeaker is improved. Simultaneously, set up first air current passageway on the skeleton and can let the inboard cavity of two adjacent voice coils realize the intercommunication, let the air in the inboard cavity of adjacent voice coil loudspeaker voice coil realize circulating, set up the second air current passageway on the skeleton and can let the inboard cavity of voice coil loudspeaker voice coil realize the intercommunication with outside space, let the air can realize flowing at the inside and outside of voice coil loudspeaker voice coil, and then let micro-speaker's high frequency sensitivity improve.

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 schematic structural diagram of a portion of a micro-speaker according to a first embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a skeleton in a micro speaker according to a first embodiment of the present utility model;

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

fig. 5 is a schematic structural diagram of a skeleton in a micro speaker according to a second embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a part of the structure of a micro-speaker according to a third embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a skeleton in 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 schematic structural view of a part of the structure of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a skeleton in a micro speaker according to a fourth embodiment of the present utility model;

fig. 11 is a schematic structural diagram of a part of the structure of a micro-speaker according to a fifth embodiment of the present utility model;

fig. 12 is a schematic structural diagram of a skeleton in 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 structural diagram of a skeleton in a micro speaker according to a sixth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a diaphragm assembly;

4. a skeleton; 41. longitudinal ribs; 42. transverse ribs; 43. an upper fixing part; 44. a connection part; 45. a lower fixing part;

51. a first airflow passage; 52. a second airflow passage;

6. 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 3, a framework 4 and a plurality of voice coils 6, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coils 6 to move; the top of the framework 4 is connected with the vibrating diaphragm assembly 3, the voice coil 6 is positioned below the framework 4, the top of the voice coil 6 is connected with the bottom of the framework 4, and the voice coil 6 and the framework 4 can be connected through glue, double-sided adhesive paper or other modes; the frame 4 is provided with a first air flow channel 51, and the first air flow channel 51 is communicated with the inner side cavities of two adjacent voice coils 6; and/or, the framework 4 is provided with a second air flow channel, and the second air flow channel is communicated with the inner cavity of the voice coil 6 and the outer space of the voice coil 6. As can be seen from fig. 1 to 3, in the micro-speaker of the present embodiment, the second air flow channel is not provided on the chassis 4, but the effect of improving the high-frequency sensitivity of the micro-speaker can be similarly achieved by providing only the first air flow channel 51.

In order to balance the stress of the vibration assembly and thereby improve the polarization of the voice coil 6, it is preferable that the frame 4 has an axisymmetric structure.

Preferably, the frame 4 includes an upper fixing portion 43, a connecting portion 44, and a lower fixing portion 45 sequentially connected from top to bottom, where the upper fixing portion 43 and the lower fixing portion 45 are respectively in a planar structure, so that the upper fixing portion 43 can be well contacted and connected with the diaphragm assembly 3, the lower fixing portion 45 can be well contacted and connected with the voice coil 6, and the connecting portion 44 is used for lifting the upper fixing portion 43, so that a vertical space is formed between the upper fixing portion 43 and the lower fixing portion 45, that is, a position of the voice coil 6 in the magnetic gap can be adjusted by adjusting a height of the connecting portion 44. Both the connection portion 44 and the lower fixing portion 45 may be a press-formed press structure, for example, an L-shaped structure, a hollow convex hull structure, or the like.

In order to ensure the structural strength of the framework 4, it is preferable that the first air flow channel 51 and the second air flow channel are provided on the connection portion 44 and/or the lower fixing portion 45.

In some embodiments, at least one set of two adjacent voice coils 6 are in contact with each other, and the first air flow channel 51 is located above the adjacent edges of the two adjacent voice coils 6.

In this embodiment, the number of voice coils 6 is two, the overall frame 4 is in a shape of a Chinese character 'ri', the frame 4 includes three longitudinal ribs 41 and two transverse ribs 42, the transverse ribs 42 are connected with the longitudinal ribs 41, the first air flow channels 51 are disposed on the longitudinal ribs 41 in the middle, that is, the first air flow channels 51 are disposed on the longitudinal ribs 41 in the middle of the three longitudinal ribs 41.

In order to improve the connection strength between the bobbin 4 and the voice coil 6, it is preferable that the three longitudinal ribs 41 be connected to adjacent sides of the voice coil 6 at the same time with the middle longitudinal rib 41. Of course, in other embodiments, it is also possible that only one voice coil 6 is connected to the middle longitudinal rib 41, and the selection may be specifically made according to actual needs.

In this embodiment, the first air flow channel 51 is disposed corresponding to a middle region of the longitudinal rib 41 located in the middle.

In order to improve the coil dropping phenomenon of the voice coil 6, it is preferable that two adjacent voice coils 6 are connected and fixed to each other, and there are many specific measures for realizing the connection and fixation of the two adjacent voice coils 6, 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 coil 6, and the like.

It should be noted that, in other embodiments, the number of the voice coils 6 may be three, four, five or even more.

Example two

Referring to fig. 4 and 5, 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: in the first embodiment, the length of the first air flow channel 51 is shorter, but in the present embodiment, the length of the first air flow channel 51 is equal to the length of the middle longitudinal rib 41, specifically, at this time, the connecting portion and the lower fixing portion of the middle longitudinal rib 41 of the three longitudinal ribs 41 are removed, and the upper fixing portion 43 is remained, so that the structural strength of the skeleton 4 and the connection strength of the skeleton 4 and the diaphragm assembly can be ensured.

The first air flow channel 51 with a larger length can make the air in the inner cavities of the two adjacent voice coils 6 more smoothly circulate.

In other embodiments, the skeleton 4 may be entirely shaped like a Chinese character 'kou'. This reduces the overall weight of the vibration assembly, thereby improving the performance of the micro-speaker.

Example III

Referring to fig. 6 and 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: a plurality of the first air flow passages 51 are provided on the middle longitudinal rib 41 among the three longitudinal ribs 41 of the frame 4.

In this embodiment, three first air flow channels 51 are disposed on the middle longitudinal rib 41 at intervals, which gives consideration to the connection strength between the frame 4 and the voice coil 6 and the smoothness of air circulation in the inner cavities of two adjacent voice coils 6.

Example IV

Referring to fig. 8 to 10, 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 frame 4 has a second air flow passage 52.

Optionally, the plurality of voice coils 6 are arranged in a row and are contacted with each other to form a voice coil 6 assembly, and the second airflow channel 52 is arranged on the framework 4 corresponding to the outer side of the voice coil 6 assembly; and/or, the frame 4 is provided with the second air flow passage 52 corresponding to the corner of the voice coil 6 assembly.

In this embodiment, the number of voice coils 6 is two, the overall skeleton 4 is in a shape of a Chinese character 'ri', the skeleton 4 includes three longitudinal ribs 41 and two transverse ribs 42, and the transverse ribs 42 are connected with the longitudinal ribs 41; the second air flow passages 52 are provided on the longitudinal ribs 41 on both sides of the three longitudinal ribs 41, respectively.

Optionally, the first air flow channel 51 is arranged co-linearly with two of said second air flow channels 52.

In other embodiments, it is also possible to provide only the second air flow passage 52 without providing the first air flow passage 51, and the provision of only the second air flow passage 52 can also have the effect of improving the high-frequency sensitivity of the micro-speaker.

Example five

Referring to fig. 11 and 12, a fifth embodiment of the present utility model is a further improvement based on the fourth embodiment, and is different from the fourth embodiment in that: the connection between the transverse ribs 42 and the longitudinal ribs 41 on both sides is provided with the second air flow passages 52, respectively.

Example six

Referring to fig. 13 and 14, a sixth embodiment of the present utility model is a further improvement based on the fourth embodiment, and is different from the fourth embodiment in that: the number of the voice coils 6 is three, the whole framework 4 is shaped like a Chinese character 'mu', the framework 4 comprises four longitudinal ribs 41 and two transverse ribs 42, and the transverse ribs 42 are connected with the longitudinal ribs 41; the longitudinal ribs 41 on two sides of the four longitudinal ribs 41 are respectively provided with a second air flow channel 52; the four longitudinal ribs 41 are provided with first air flow passages 51 on the two longitudinal ribs 41 located at the center, respectively.

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

A diaphragm assembly;

the top of the framework is connected with the vibrating diaphragm assembly;

the voice coils are positioned below the framework, and the top parts of the voice coils are connected with the bottom parts of the framework;

the framework is provided with a first air flow channel which is communicated with the inner side cavities of the two adjacent voice coils; and/or, a second airflow channel is arranged on the framework, and the second airflow channel is communicated with the inner side cavity of the voice coil and the outer side space of the voice coil.

2. A micro-speaker as claimed in claim 1, wherein: the framework is of an axisymmetric structure.

3. A micro-speaker as claimed in claim 1, wherein: at least one group of two adjacent voice coils are contacted with each other, and the first air flow channel is positioned above the adjacent edges of the two adjacent voice coils.

4. A micro-speaker as claimed in claim 3, wherein: the voice coil loudspeaker voice coil quantity is two, the skeleton is the style of calligraphy wholly, the skeleton includes three vertical muscle and two horizontal muscle, horizontal muscle with vertical muscle links to each other, first air current channel is located in the middle on the vertical muscle.

5. A micro-speaker as claimed in claim 4, wherein: the first air flow channel is arranged corresponding to a middle area of the longitudinal rib positioned in the middle.

6. A micro-speaker as claimed in claim 4, wherein: and a plurality of first air flow channels are arranged on the longitudinal ribs in the middle.

7. A micro-speaker as claimed in claim 4, wherein: the length of the first air flow channel is equal to the length of the longitudinal rib positioned in the middle.

8. A micro-speaker as claimed in claim 1, wherein: the voice coils are arranged in a row and mutually contacted to form a voice coil assembly, and the framework is provided with the second airflow channel corresponding to the outer side edge of the voice coil assembly; and/or, the framework is provided with the second air flow channel corresponding to the corner of the voice coil assembly.

9. A micro-speaker as claimed in claim 8, wherein: the number of the voice coils is two, the whole framework is in a shape like a Chinese character 'ri', the framework comprises three longitudinal ribs and two transverse ribs, and the transverse ribs are connected with the longitudinal ribs; the longitudinal ribs positioned on the two sides are respectively provided with the second airflow channels; and/or the connection parts of the transverse ribs and the longitudinal ribs positioned at the two sides are respectively provided with the second air flow channels.

10. A micro-speaker as claimed in claim 8, wherein: the number of the voice coils is three.