Sound production unit

Abstract

The utility model discloses a sounding unit which comprises a vibrating diaphragm assembly, a waterproof breathable film and a protection frame, and the vibrating diaphragm assembly is provided with a leakage hole. The waterproof breathable film is connected to the outer side of the vibrating diaphragm assembly and covers the leakage hole; the protection frame is located on the outer side of the waterproof breathable film and connected with the waterproof breathable film. In the production and assembly process of the sound production unit, the protection frame can improve the condition that the waterproof breathable film is contacted and collided, only the protection frame is damaged, and the waterproof breathable film located on the inner layer is not damaged, so that the sound production unit still keeps good waterproof performance. In addition, in the area covered by the protection frame, the protection frame can also play a waterproof role, the waterproof allowance of the sound production unit is improved, and the waterproof performance of the sound production unit is further guaranteed. The waterproof breathable film is arranged on the outer side of the vibrating diaphragm assembly, so that the waterproof breathable film and the protection frame can be prevented from occupying the internal space of the sound production unit, and the sound production unit can realize large amplitude.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly to a sounding unit. Background Art

[0002] In order for the sounding unit to achieve excellent high-frequency acoustic characteristics, the diaphragm assembly must have sufficient stiffness and toughness to withstand severe reciprocating motion. However, during the vibration of the diaphragm assembly, the phenomenon of excessive pressure difference between the inside and outside is likely to occur.

[0003] In the related art, in order to balance the air pressure difference between the internal space and the outside during the operation of the sounding unit, leakage holes are often provided on the diaphragm assembly to connect the internal space of the speaker and the outside, and a waterproof breathable film assembly is also required to cover the leakage holes to achieve the purpose of waterproofing. However, during the production and assembly process, there are situations such as contact and collision with the waterproof breathable film assembly (for example, in order to make the fixing effect of the waterproof breathable film assembly better, pressing is carried out). These contacts and collisions sometimes cause damage to the waterproof breathable film, thereby reducing or invalidating the waterproof effect of the sounding unit and affecting the waterproof performance of the sounding unit. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a sounding unit with guaranteed waterproof performance.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, comprising:

[0006] A diaphragm assembly, on which leakage holes are provided;

[0007] A waterproof breathable film, which is connected to the outside of the diaphragm assembly and covers the leakage holes;

[0008] A protection frame, which is located outside the waterproof breathable film and connects the waterproof breathable film.

[0009] In one embodiment, the leakage holes are provided corresponding to the hollow area of the protection frame.

[0010] In one embodiment, the outer edge of the protection frame is flush with or protrudes from the outer edge of the waterproof breathable film.

[0011] In one embodiment, the material of the protection frame is metal.

[0012] In one embodiment, the material of the protection frame is plastic.

[0013] In one embodiment, the material of the protection frame is PET, PEN or PEI.

[0014] In one embodiment, the protective frame is adhesively fixed to the waterproof and breathable membrane through a first colloid.

[0015] In one embodiment, the number of the waterproof and breathable membranes is multiple, and the multiple waterproof and breathable membranes are stacked. Two adjacent waterproof and breathable membranes are adhesively fixed through a second colloid, and the protective frame is connected to the waterproof and breathable membrane away from the diaphragm assembly.

[0016] In one embodiment, the diaphragm assembly includes a sounding film and a dome. The sounding film includes an inner fixing portion, a deformation portion, and an outer fixing portion that are connected in sequence from the inside to the outside. An opening is provided on the inner fixing portion, and the dome is disposed at the opening and closes the opening. The leakage hole and the waterproof and breathable membrane are disposed on the dome.

[0017] In one embodiment, the dome is connected to the inner side of the inner fixing portion, and the waterproof and breathable membrane is disposed on the outer side surface of the dome.

[0018] The beneficial effects of the present utility model are as follows: During the production and assembly of the sound generating unit, the protective frame can improve the situation where the waterproof and breathable membrane is contacted and collided. Only the protective frame is damaged, and the waterproof and breathable membrane located in the inner layer is not damaged. Therefore, the sound generating unit still maintains good waterproof performance.

[0019] In the area covered by the protective frame, the protective frame can also play a waterproof role, which is beneficial to improving the waterproof margin of the sound generating unit and further ensuring the waterproof performance of the sound generating unit.

[0020] The waterproof and breathable membrane disposed on the outer side of the diaphragm assembly can also avoid the waterproof and breathable membrane and the protective frame occupying the internal space of the sound generating unit, ensuring that the sound generating unit can achieve large amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 description in 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.

[0022] Figure 1 It is a cross-sectional view of the sound generating unit according to Embodiment 1 of the present utility model;

[0023] Figure 2 It is an exploded view of a partial structure of the sound generating unit according to Embodiment 1 of the present utility model;

[0024] Figure 3 It is a cross-sectional view of the sound generating unit according to Embodiment 2 of the present utility model.

[0025] Description of the reference numerals in the drawings:

[0026] 1. Basin frame;

[0027] 2. Diaphragm assembly; 21. Leakage hole; 22. Sound film; 221. Inner fixing part; 222. Deformation part; 223. Outer fixing part; 224. Lower fixing part; 23. Dome;

[0028] 3. Waterproof and breathable film;

[0029] 4. Voice coil;

[0030] 5. Magnetic circuit assembly;

[0031] 61. First colloid; 62. Second colloid;

[0032] 7. Front cover;

[0033] 8. Protection frame. Detailed implementation manners

[0034] 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.

[0035] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] 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 positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0037] 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.

[0038] In addition, if the word "and / or" appears throughout the text, it means that three parallel solutions are included. For example, "and / or" includes solutions, or solutions, or solutions that meet all of the requirements simultaneously. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. If the combination of technical solutions is mutually contradictory or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0039] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0040] Example 1

[0041] Please refer to Figure 1 and Figure 2 , embodiment 1 of the present utility model is: a sound unit, including a basin frame 1, a diaphragm assembly 2, a waterproof breathable membrane 3, a voice coil 4, a magnetic circuit assembly 5 and a protective frame 8, the diaphragm assembly 2 and the magnetic circuit assembly 5 are respectively connected to the basin frame 1, the magnetic circuit assembly 5 has a magnetic gap for the voice coil 4 to move, the diaphragm assembly 2 is connected to the voice coil 4, and a leakage hole 21 is provided on the diaphragm assembly 2; the waterproof breathable membrane 3 is connected to the outside of the diaphragm assembly 2 and covers the leakage hole 21, thereby preventing external water vapor from entering the sound unit through the leakage hole 21, but the gas inside the sound unit can be exchanged with the outside through the leakage hole 21; the protective frame 8 is located on the outside of the waterproof breathable membrane 3, and the protective frame 8 is connected to the waterproof breathable membrane 3.

[0042] Preferably, the leakage hole 21 is provided corresponding to the hollow area of the protection frame 8, so that the internal space of the sound unit and the external air flow can be exchanged more smoothly.

[0043] In this embodiment, the diaphragm assembly 2 includes a sound membrane 22 and a dome 23. The sound membrane 22 includes an inner fixed portion 221, a deformation portion 222 and an outer fixed portion 223 connected in sequence from the inside to the outside. A window is provided on the inner fixed portion 221. The dome 23 is connected to the inner fixed portion 221 and closes the window. The leakage hole 21 is provided on the dome 23. The waterproof and breathable membrane 3 is connected to the dome 23.

[0044] In some embodiments, the dome 23 is connected to the inner fixing portion 221, and the waterproof and breathable film 3 is disposed on the outer side surface of the dome 23. To ensure the stability of the connection between the diaphragm 22 and the dome 23, optionally, the diaphragm 22 further includes a lower fixing portion 224 disposed around the dome 23. The cross-section of the lower fixing portion 224 is L-shaped. The lower fixing portion 224 is connected to the inner fixing portion 221 to form an embedding groove, and the edge of the dome 23 is embedded in the embedding groove. The lower fixing portion 224 is connected to the dome 23. It is easy to understand that the inner fixing portion 221 and the lower fixing portion 224 are an integrally formed structure processed integrally. For example, the diaphragm 22 is an integrally injection-molded structure.

[0045] Of course, in other embodiments, it is also possible that the diaphragm assembly 2 only includes the diaphragm 22 and does not have the dome 23. At this time, the leakage hole 21 is disposed on the diaphragm 22, and the waterproof and breathable film 3 is connected to the diaphragm 22.

[0046] The outer edge of the protection frame 8 is flush with or protrudes from the outer edge of the waterproof and breathable film 3. Of course, in a specific product, it is also acceptable that the outer edge of the waterproof and breathable film 3 slightly protrudes from the outer edge of the protection frame 8.

[0047] In some embodiments, the material of the protection frame 8 is metal, such as aluminum alloy. However, considering the cost and the weight of the protection frame 8, it is preferred that the material of the protection frame 8 is plastic. Specifically, the material of the protection frame 8 may be PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PEI (polyetherimide), etc.

[0048] The protection frame 8 is adhesively fixed to the waterproof and breathable film 3 by the first colloid 61. The first colloid 61 can be formed by the solidification of glue or can be a back glue.

[0049] Optionally, the sound generating unit further includes a front cover 7 connected to the speaker frame 1. In this embodiment, the outer fixing portion 223 of the diaphragm 22 is fixedly connected to the front cover 7. At this time, the diaphragm 22 is indirectly connected to the speaker frame 1 through the front cover 7.

[0050] Embodiment Two

[0051] Please refer to Figure 3 , Embodiment Two of the present invention is a further improvement made on the basis of Embodiment One. The difference from Embodiment One is that the number of the waterproof and breathable films 3 is multiple, and the multiple waterproof and breathable films 3 are stacked. Two adjacent waterproof and breathable films 3 are adhesively fixed by the second colloid 62, and the protection frame 8 is connected to the waterproof and breathable film 3 far from the diaphragm assembly 2.

[0052] When the waterproof and breathable film 3 far away from the diaphragm assembly 2 is damaged, the waterproof and breathable film 3 close to the diaphragm assembly 2 can still play the role of waterproof and breathability, further ensuring the waterproof performance of the sound generating unit. Moreover, when the waterproof and breathable film 3 far away from the diaphragm assembly 2 is damaged, the waterproof effect of the damaged waterproof and breathable film 3 is reduced, but it can still play a certain blocking role, thus relieving the water pressure on the waterproof and breathable film 3 close to the diaphragm assembly 2, and then increasing the waterproof margin, fully ensuring the waterproof performance of the sound generating unit.

[0053] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields shall be included in the patent protection scope of the present invention.

Claims

1. Sound generating unit, characterized in that: including a diaphragm assembly, on which leakage holes are provided; a waterproof and breathable film, which is connected to the outside of the diaphragm assembly and covers the leakage holes; a protection frame, which is located outside the waterproof and breathable film, and the protection frame is connected to the waterproof and breathable film.

2. The sound generating unit according to claim 1, wherein: The leakage holes are arranged corresponding to the hollow area of the protection frame.

3. The sound generating unit according to claim 1, wherein: The outer edge of the protection frame is arranged flush with or protruding from the outer edge of the waterproof and breathable film.

4. The sound generating unit according to claim 1, wherein: The material of the protection frame is metal.

5. The sound generating unit according to claim 1, wherein: The material of the protection frame is plastic.

6. The sound generating unit according to claim 5, wherein: The material of the protection frame is PET, PEN or PEI.

7. The sound generating unit according to claim 1, wherein: The protection frame is adhesively fixed to the waterproof and breathable film through a first colloid.

8. The sound generating unit according to claim 1, characterized in that: The number of the waterproof and breathable films is multiple. The multiple waterproof and breathable films are stacked, and two adjacent waterproof and breathable films are adhesively fixed through a second colloid. The protection frame is connected to the waterproof and breathable film far from the diaphragm assembly.

9. The sound generating unit according to claim 1, characterized in that: The diaphragm assembly includes a sounding film and a dome. The sounding film includes an inner fixing part, a deformation part and an outer fixing part which are connected in sequence from inside to outside. A window is provided on the inner fixing part. The dome is arranged at the window and closes the window. The leakage holes and the waterproof and breathable film are arranged on the dome.

10. The sound generating unit according to claim 9, characterized in that: The dome is connected to the inner side of the inner fixing part, and the waterproof and breathable film is arranged on the outer side surface of the dome.

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