Vibration assembly and micro loudspeaker

Abstract

The utility model discloses a vibration assembly and a miniature loudspeaker, the vibration assembly comprises a voice coil, a diaphragm assembly, a skeleton assembly and a waterproof breathable film, and the central area of the diaphragm assembly is provided with an air hole; the skeleton assembly comprises an upper annular skeleton and a lower annular skeleton located below the upper annular skeleton, the top surface of the upper annular skeleton is connected with the diaphragm assembly, and the bottom surface of the lower annular skeleton is connected with the voice coil; the waterproof breathable film is located between the upper annular framework and the lower annular framework, the waterproof breathable film is fixedly connected with the upper annular framework and the lower annular framework, and the waterproof breathable film corresponds to the breathable holes. The vibration assembly is novel in structure, the waterproof and breathable film not only plays a waterproof and breathable function, but also plays a function of increasing the thickness of the skeleton assembly in the vibration assembly, so that the height of the skeleton assembly is increased, a voice coil in the micro loudspeaker can be deeper into a magnetic gap, and the performance of the micro loudspeaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly relates to a vibration assembly and a micro-speaker. Background Art

[0002] With the popularization of mobile devices such as smart phones, the market demand for micro-speakers is increasing continuously. At the same time, more and more users hope that their devices have waterproof performance.

[0003] The conventional waterproof design of a micro-speaker is to stick a waterproof breathable film on the upper surface of the middle sticker. In this design scheme, the waterproof breathable film only plays a waterproof role, and its function is relatively single. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a new vibration assembly in which the waterproof breathable film can play at least two functions, and in addition, a micro-speaker with the above vibration assembly is provided.

[0005] In order to solve the above technical problem, the first technical scheme adopted by the utility model is: a vibration assembly, comprising:

[0006] Voice coil;

[0007] A diaphragm assembly, wherein a ventilation hole is provided in the central area of the diaphragm assembly;

[0008] A skeleton assembly, the skeleton assembly includes an upper annular skeleton and a lower annular skeleton located below the upper annular skeleton, the top surface of the upper annular skeleton is connected to the diaphragm assembly, and the bottom surface of the lower annular skeleton is connected to the voice coil;

[0009] A waterproof breathable film, the waterproof breathable film is located between the upper annular skeleton and the lower annular skeleton, the waterproof breathable film is fixedly connected to the upper annular skeleton and the lower annular skeleton respectively, and the waterproof breathable film corresponds to the ventilation hole.

[0010] In one embodiment, the diaphragm assembly includes a middle sticker and a voice membrane arranged around the middle sticker, the ventilation hole is arranged on the middle sticker, and the top surface of the upper annular skeleton is connected to the middle sticker or the voice membrane.

[0011] In one embodiment, the voice membrane includes an inner fixing ring, a folding ring part and an outer fixing ring which are connected in sequence from inside to outside, and the inner fixing ring is arranged around the middle sticker and connected to the middle sticker.

[0012] In one embodiment, the upper annular skeleton and the lower annular skeleton are mirror-symmetrical with respect to the waterproof breathable film.

[0013] In one embodiment, the upper annular skeleton and the lower annular skeleton are respectively in the shape of a rectangular frame.

[0014] In one embodiment, the corners of the upper annular skeleton are rounded structures.

[0015] In one embodiment, the material of the upper annular skeleton is PET.

[0016] In one embodiment, the waterproof and breathable membrane is adhesively connected to the upper annular skeleton and the lower annular skeleton respectively.

[0017] In one embodiment, the number of the ventilation holes is one or more.

[0018] In order to solve the above technical problems, the second technical solution adopted by the present utility model is: a micro speaker, comprising the above-mentioned vibration assembly.

[0019] The beneficial effects of the present utility model are as follows: the structure of the present vibration assembly is novel. The waterproof and breathable membrane not only plays the functions of waterproofing and breathability in the vibration assembly, but also plays the function of increasing the thickness of the skeleton assembly, so that the height of the skeleton assembly is increased, enabling the voice coil in the micro speaker to penetrate deeper into the magnetic gap, which is beneficial to improving the performance of the micro speaker. Moreover, the edge area of the waterproof and breathable membrane is fixed on both sides, effectively improving the warping phenomenon at the edge of the waterproof and breathable membrane, which is beneficial to ensuring the effectiveness of the installation of the waterproof and breathable membrane and ensuring that the waterproof and breathable membrane can work stably for a long time. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 Structural schematic diagram of the diaphragm assembly according to Embodiment 1 of the present utility model Figure 1 ;

[0022] Figure 2 Structural schematic diagram of the diaphragm assembly according to Embodiment 1 of the present utility model Figure 2 ;

[0023] Figure 3 Cross-sectional view of the diaphragm assembly according to Embodiment 1 of the present utility model.

[0024] Explanation of the reference numerals in the drawings:

[0025] 1. Voice coil;

[0026] 2. Diaphragm assembly; 21. Venting holes; 22. Middle sticker; 23. Sound film; 231. Inner fixing ring; 232. Folding ring part; 233. Outer fixing ring;

[0027] 3. Upper annular skeleton;

[0028] 4. Lower annular skeleton;

[0029] 5. Waterproof and breathable film. Specific embodiments

[0030] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0034] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0035] In this application, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a micro speaker, including a chassis, a vibration assembly and a magnetic circuit assembly. The vibration assembly and the magnetic circuit assembly are respectively connected to the chassis. The magnetic circuit assembly includes a yoke and a central magnetic structure and a side magnetic structure respectively arranged on the yoke. The central magnetic structure is located between at least a pair of relatively arranged side magnetic structures, and a magnetic gap is formed between the central magnetic structure and the side magnetic structure;

[0038] The vibration assembly includes a voice coil 1, a diaphragm assembly 2, a skeleton assembly and a waterproof and breathable membrane 5. A ventilation hole 21 is arranged in the central area of the diaphragm assembly 2. The skeleton assembly includes an upper annular skeleton 3 and a lower annular skeleton 4 located below the upper annular skeleton 3. The top surface of the upper annular skeleton 3 is connected to the diaphragm assembly 2, the bottom surface of the lower annular skeleton 4 is connected to the voice coil 1, the voice coil 1 is arranged corresponding to the magnetic gap, the ventilation hole 21 is arranged corresponding to the hollow area of the voice coil 1, the waterproof and breathable membrane 5 is located between the upper annular skeleton 3 and the lower annular skeleton 4, the waterproof and breathable membrane 5 is fixedly connected to the upper annular skeleton 3 and the lower annular skeleton 4 respectively, and the waterproof and breathable membrane 5 corresponds to the ventilation hole 21.

[0039] In this embodiment, the diaphragm assembly 2 includes a middle patch 22 and a sound film 23 arranged around the middle patch 22. The ventilation hole 21 is arranged on the middle patch 22. The top surface of the upper annular skeleton 3 is connected to the middle patch 22 or the sound film 23. Specifically, the sound film 23 includes an inner fixing ring 231, a folding ring part 232 and an outer fixing ring 233 which are connected in sequence from the inside to the outside. The inner fixing ring 231 is arranged around the middle patch 22 and connected to the middle patch 22. In other embodiments, the diaphragm assembly 2 may only have the sound film 23 without the middle patch 22. At this time, the ventilation hole 21 is arranged on the sound film 23.

[0040] Preferably, the upper annular skeleton 3 and the lower annular skeleton 4 are mirror-symmetrical with respect to the waterproof and breathable film 5. That is to say, the structural shapes and dimensions of the upper annular skeleton 3 and the lower annular skeleton 4 are the same. In this way, the same part can be used as the upper annular skeleton 3 and also as the lower annular skeleton 4, which is beneficial to reducing the material mold opening cost and storage cost.

[0041] In this embodiment, the upper annular skeleton 3 and the lower annular skeleton 4 are respectively in the shape of a rectangular frame. To reduce the probability of accidental damage to the upper annular skeleton 3, optionally, the corners of the upper annular skeleton 3 are rounded structures.

[0042] The material of the upper annular skeleton 3 is PET, metal or other materials. Similarly, the material of the lower annular skeleton 4 is PET, metal or other materials, where PET is polyethylene terephthalate.

[0043] The waterproof and breathable film 5 is adhesively connected to the upper annular skeleton 3 and the lower annular skeleton 4 respectively. The upper annular skeleton 3 is bonded to the diaphragm assembly 2, and the lower annular skeleton 4 is bonded to the voice coil 1.

[0044] The number of the air vents 21 is one or more. In this embodiment, the number of the air vents 21 is seven, and the seven air vents 21 are evenly distributed in a row.

[0045] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A vibration component, characterized in that: including voice coil; a diaphragm assembly, the central region of the diaphragm assembly being provided with air vents; a skeleton assembly, the skeleton assembly including an upper annular skeleton and a lower annular skeleton located below the upper annular skeleton, the top surface of the upper annular skeleton being connected to the diaphragm assembly, and the bottom surface of the lower annular skeleton being connected to the voice coil; a waterproof and breathable membrane, the waterproof and breathable membrane being located between the upper annular skeleton and the lower annular skeleton, the waterproof and breathable membrane being fixedly connected to the upper annular skeleton and the lower annular skeleton respectively, and the waterproof and breathable membrane corresponding to the air vents.

2. The vibration assembly according to claim 1, wherein: The diaphragm assembly includes a middle sticker and a sounding film arranged around the middle sticker, the air vents being provided on the middle sticker, and the top surface of the upper annular skeleton being connected to the middle sticker or the sounding film.

3. The vibration assembly according to claim 2, characterized in that: The sounding film includes an inner fixing ring, a folding ring portion and an outer fixing ring connected in sequence from inside to outside, the inner fixing ring being arranged around the middle sticker and connected to the middle sticker.

4. The vibration assembly according to claim 1, characterized in that: The upper annular skeleton and the lower annular skeleton are mirror-symmetrical with respect to the waterproof and breathable membrane.

5. The vibration assembly according to claim 4, wherein: The upper annular skeleton and the lower annular skeleton are respectively in the shape of a rectangular frame.

6. The vibration assembly according to claim 5, wherein: The corners of the upper annular skeleton are rounded structures.

7. The vibration assembly according to claim 1, characterized in that: The material of the upper annular skeleton is PET.

8. The vibration assembly according to claim 1, wherein: The waterproof and breathable membrane is adhesively connected to the upper annular skeleton and the lower annular skeleton respectively.

9. The vibration assembly according to claim 1, wherein: The number of the air vents is one or more.

10. Miniature loudspeaker, characterized in that: including the vibration assembly according to any one of claims 1-9.

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