CN219019022U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a basin frame, a vibration assembly and an auxiliary membrane, wherein the vibration assembly comprises a vibration membrane assembly, a voice coil and a framework, the vibration membrane assembly is connected with the basin frame, a part of area of the framework is positioned between the voice coil and the vibration membrane assembly, and the framework is respectively connected and fixed with the vibration membrane assembly and the voice coil; one end of the auxiliary film is connected with the basin frame, and the other end of the auxiliary film and the framework are injection molded into an integrated structure. The bottom of skeleton and vice membrane are through injection molding process shaping integrated into one-piece structure, have strengthened vice membrane and skeleton's joint strength effectively, have improved vice membrane and skeleton easy separation phenomenon, do benefit to the structural stability who improves micro-speaker, extension micro-speaker's life, reduce the production of noise, reinforcing user's use experience. Furthermore, the existence of the framework can enable more areas of the voice coil to be located in the magnetic gap, so that the performance of the micro-speaker is improved.

Description

Miniature loudspeaker

Technical Field

The utility model relates to the technical field of electroacoustic transducers, 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, there is an increasing demand for micro speakers to be applied thereto.

In the design of current miniature speaker product, in order to let the voice coil loudspeaker voice coil more regional can sink in magnetic gap of magnetic circuit subassembly to improve miniature speaker's performance, can set up the skeleton in some miniature speakers, connect vibrating diaphragm subassembly and voice coil loudspeaker voice coil through the skeleton, and in order to rectify to the voice coil loudspeaker voice coil, can set up the auxiliary film of connecting skeleton and miniature speaker's basin frame in the industry, in the prior art, auxiliary film and skeleton are adhesive connection, auxiliary film and skeleton bond because factors such as glue intensity or processing are beaten gluey operating mode, the phenomenon that the skeleton is separated with auxiliary film often can appear after the experiment of miniature speaker reliability high temperature, cause speaker noise or vice film to break away from skeleton scheduling problem.

Disclosure of Invention

The technical problems solved by the utility model are as follows: a micro speaker in which a frame and a sub-film are not easily separated is provided.

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

a basin stand;

the vibration assembly comprises a vibrating diaphragm assembly, a voice coil and a framework, wherein the vibrating diaphragm assembly is connected with the basin frame, a part of area of the framework is positioned between the voice coil and the vibrating diaphragm assembly, and the framework is respectively connected and fixed with the vibrating diaphragm assembly and the voice coil;

the auxiliary membrane, the one end of auxiliary membrane is connected the basin frame, the other end of auxiliary membrane with skeleton injection moulding is integrated into one piece structure.

Further, the skeleton includes first portion and second portion, vibrating diaphragm subassembly with the voice coil loudspeaker voice coil is connected respectively first portion, the cross-section of second portion is the L style of calligraphy, the second portion includes continuous side arm and bottom arm, the top of side arm is connected first portion, vice membrane with bottom arm injection moulding is integrated into one piece structure.

Further, an end of the bottom arm remote from the side arm is embedded in the secondary membrane.

Further, the auxiliary film comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, the outer fixing part is connected with the basin frame, one end, away from the folded ring part, of the inner fixing part forms a containing groove, and at least part of the area of the bottom arm is embedded into the containing groove.

Further, the outer fixing part is connected with the basin frame in an adhesive mode.

Further, the auxiliary film and the basin frame are formed into an integral structure through injection molding.

Further, the bottom of the basin frame is provided with a containing groove, the auxiliary film is provided with a connecting edge extending into the containing groove, and the connecting edge is connected with the basin frame.

Further, the connection part of the connection edge and the outer fixing part is positioned at the outer edge or the middle part of the outer fixing part.

Further, the first portion is zigzag.

Further, the side arm is located inside or outside the voice coil.

The utility model has the beneficial effects that: the bottom of skeleton and vice membrane are through injection molding process shaping integrated into one-piece structure, have strengthened vice membrane and skeleton's joint strength effectively, have improved vice membrane and skeleton easy separation phenomenon, do benefit to the structural stability who improves micro-speaker, extension micro-speaker's life, reduce the production of noise, reinforcing user's use experience. Furthermore, the existence of the framework can enable more areas of the voice coil to be located in the magnetic gap, so that the performance of the micro-speaker is 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 top view of a micro-speaker according to a first embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an enlarged view at B in fig. 2.

Reference numerals illustrate:

1. a basin stand; 11. a receiving groove;

2. a diaphragm assembly; 21. a sound membrane; 22. a dome;

3. a voice coil;

4. a skeleton; 41. a first portion; 42. a second portion; 421. a side arm; 422. a bottom arm;

5. a magnetic circuit assembly; 51. a magnetic gap;

6. a secondary membrane; 61. an inner fixing part; 611. a receiving groove; 62. a ring folding part; 63. an outer fixing part; 64. and connecting edges.

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: a 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, a vibration assembly, a magnetic circuit assembly 5 and an auxiliary membrane 6, wherein the magnetic circuit assembly 5 and the vibration assembly are respectively arranged on the basin frame 1, the magnetic circuit assembly 5 is provided with a magnetic gap 51, the vibration assembly comprises a vibrating diaphragm assembly 2, a voice coil 3 and a framework 4, the vibrating diaphragm assembly 2 is connected with the basin frame 1, a part area of the framework 4 is positioned between the voice coil 3 and the vibrating diaphragm assembly 2, the framework 4 is respectively connected and fixed with the vibrating diaphragm assembly 2 and the voice coil 3, the top of the voice coil 3 is connected with the framework 4, and the bottom of the voice coil 3 stretches into the magnetic gap 51.

In this embodiment, the diaphragm assembly 2 includes a sound membrane 21 and a dome 22 disposed on the sound membrane 21, and in other embodiments, the diaphragm assembly 2 may include only the sound membrane 21 without the dome 22.

One end of the auxiliary film 6 is connected with the basin frame 1, the other end of the auxiliary film 6 and the framework 4 are in an integrated structure through injection molding, specifically, the auxiliary film 6 comprises an inner fixing portion 61, a folded ring portion 62 and an outer fixing portion 63 which are sequentially connected from inside to outside, the outer fixing portion 63 is connected with the basin frame 1, and the inner fixing portion 61 and the framework 4 are in an integrated structure through injection molding.

The frame 4 includes a first portion 41 and a second portion 42, and the diaphragm assembly 2 and the voice coil 3 are respectively connected to the first portion 41, that is, at least a partial area of the first portion 41 is located between the diaphragm assembly 2 and the voice coil 3; the section of the second portion 42 is L-shaped, the second portion 42 includes a side arm 421 and a bottom arm 422 that are connected, the top of the side arm 421 is connected to the first portion 41, and the auxiliary film 6 and the bottom arm 422 are injection molded into an integral structure, that is, the inner fixing portion 61 and the bottom arm 422 are injection molded into an integral structure.

In this embodiment, the first portion 41 is integrally in a ring frame shape, the number of the second portions 42 is four, and the four second portions 42 are respectively disposed corresponding to four corners of the voice coil 3.

To further increase the bonding strength of the frame 4 to the secondary membrane 6, the end of the bottom arm 422 remote from the side arm 421 is embedded in the secondary membrane 6. In this embodiment, an accommodating groove 611 is formed at an end of the inner fixing portion 61 away from the hinge portion 62, and at least a partial region of the bottom arm 422 is embedded in the accommodating groove 611. The receiving groove 611 may be in communication with the top surface and the end surface of the inner fixing portion 61, and in this case, the bottom surface and the end surface of the bottom arm 422 are coupled to the inner fixing portion 61, respectively; the receiving groove 611 may be in communication with the bottom surface and the end surface of the inner fixing portion 61, and at this time, the top surface and the end surface of the bottom arm 422 are coupled to the inner fixing portion 61, respectively. However, it is preferable that the receiving groove 611 communicates only with the end surface of the inner fixing portion 61, and at this time, the top surface, the bottom surface and the end surface of the bottom arm 422 are combined with the inner fixing portion 61, thereby improving the combination strength of the frame 4 and the auxiliary film 6 to a greater extent.

In this embodiment, the outer fixing portion 63 is adhesively connected to the basin stand 1. In other embodiments, the auxiliary membrane 6 and the basin stand 1 may be integrally formed by injection molding.

In order to improve the bonding strength between the auxiliary film 6 and the basin frame 1, optionally, a receiving groove 11 is formed at the bottom of the basin frame 1, the auxiliary film 6 has a connecting edge 64 extending into the receiving groove 11, the connecting edge 64 is connected with the basin frame 1, and the matching of the connecting edge 64 and the receiving groove 11 effectively increases the bonding area between the auxiliary film 6 and the basin frame 1, thereby improving the bonding force between the two.

The connection between the connecting edge 64 and the outer fixing portion 63 is located at the outer edge or middle of the outer fixing portion 63.

In this embodiment, the first portion 41 of the skeleton 4 is in a zigzag shape, and the first portion 41 is configured in a zigzag shape, so that the distance between the diaphragm assembly 2 and the voice coil 3 is increased, and the manufacturing consumable and the overall weight of the skeleton 4 are reduced.

In other embodiments, the side arm 421 may be located outside the voice coil 3, but in order to ensure that the sub-membrane 6/frame 4 does not collide with the magnetic circuit assembly 5 when the micro-speaker achieves a large amplitude, it is preferable that the side arm 421 is located outside the voice coil 3, and that the bottom surface of the bottom arm 422 and the bottom surface of the inner fixing portion 61 are not lower than the bottom surface of the voice coil 3. As a further preferable aspect, the bottom surface of the bottom arm 422 and the bottom surface of the inner fixing portion 61 are both higher than the bottom surface of the voice coil 3.

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. A miniature loudspeaker, characterized by: comprising

A basin stand;

the vibration assembly comprises a vibrating diaphragm assembly, a voice coil and a framework, wherein the vibrating diaphragm assembly is connected with the basin frame, a part of area of the framework is positioned between the voice coil and the vibrating diaphragm assembly, and the framework is respectively connected and fixed with the vibrating diaphragm assembly and the voice coil;

the auxiliary membrane, the one end of auxiliary membrane is connected the basin frame, the other end of auxiliary membrane with skeleton injection moulding is integrated into one piece structure.

2. A micro-speaker as claimed in claim 1, wherein: the framework comprises a first part and a second part, the vibrating diaphragm assembly and the voice coil are respectively connected with the first part, the section of the second part is L-shaped, the second part comprises a side arm and a bottom arm which are connected, the top of the side arm is connected with the first part, and the auxiliary diaphragm and the bottom arm are in an integrated structure through injection molding.

3. A micro-speaker as claimed in claim 2, wherein: the end of the bottom arm away from the side arm is embedded into the secondary membrane.

4. A micro-speaker as claimed in claim 3, wherein: the auxiliary film comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, the outer fixing part is connected with the basin frame, one end, away from the folded ring part, of the inner fixing part forms a containing groove, and at least part of the bottom arm is embedded into the containing groove.

5. A micro-speaker as claimed in claim 4, wherein: the outer fixing part is connected with the basin frame in an adhesive mode.

6. A micro-speaker as claimed in claim 4, wherein: the auxiliary film and the basin frame are injection molded into an integrated structure.

7. A micro-speaker as claimed in claim 4, wherein: the bottom of the basin frame is provided with a containing groove, the auxiliary film is provided with a connecting edge which stretches into the containing groove, and the connecting edge is connected with the basin frame.

8. A micro-speaker as claimed in claim 7, wherein: the connecting edge is positioned at the outer edge or the middle part of the outer fixing part at the connecting position of the connecting edge and the outer fixing part.

9. A micro-speaker as claimed in claim 2, wherein: the first portion is Z-shaped.

10. A micro-speaker as claimed in claim 2, wherein: the side arm is located inside or outside the voice coil.

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