Sound production unit

Abstract

The utility model discloses a sounding unit which comprises a vibrating diaphragm assembly and a waterproof breathable film, and the vibrating diaphragm assembly is provided with a leakage hole. The waterproof breathable films are located on the outer side of the vibrating diaphragm assembly and cover the leakage holes, the number of the waterproof breathable films is multiple, and the waterproof breathable film located on the outermost side is connected with the vibrating diaphragm assembly through a first colloid; in every two adjacent waterproof breathable films, the overall dimension of the waterproof breathable film located on the outer side is larger than that of the waterproof breathable film located on the inner side, and the waterproof breathable film located on the inner side is connected with the other waterproof breathable film or the vibrating diaphragm assembly through a second colloid. According to the sound production unit, the number of the waterproof breathable films for sealing the leakage holes is multiple, in the production and assembly process of the sound production unit, when the waterproof breathable films are contacted and collided, only the waterproof breathable film located on the outermost layer is damaged, the waterproof breathable film located on the inner layer is not damaged, and the sound production unit can still keep a good waterproof effect.

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 intense reciprocating motion. However, during the vibration of the diaphragm assembly, the phenomenon of excessive pressure difference between the inner and outer sides is likely to occur.

[0003] In related technologies, 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 provided to cover the leakage holes to achieve the purpose of waterproofing. However, during the production and assembly process, there are situations such as contacting and colliding with the waterproof breathable film assembly (for example, in order to make the fixing effect of the waterproof breathable film assembly better, pressing is performed). 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] In order 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 located outside the diaphragm assembly and covers the leakage holes. The number of the waterproof breathable films is multiple. The outermost waterproof breathable film is connected to the diaphragm assembly through a first colloid; among two adjacent waterproof breathable films, the contour size of the waterproof breathable film located outside is larger than that of the waterproof breathable film located inside, and the waterproof breathable film located inside is connected to the other waterproof breathable film or the diaphragm assembly through a second colloid.

[0008] In one embodiment, the number of the waterproof breathable films is two, three or four.

[0009] In one embodiment, the central points of each waterproof breathable film are all located on the same straight line parallel to the vibration direction of the diaphragm assembly.

[0010] In one embodiment, the first colloid and the second colloid are each in a ring frame shape.

[0011] In one embodiment, the first colloid and the second colloid are not connected.

[0012] In one embodiment, there is a gap between at least one group of two adjacent waterproof and breathable membranes.

[0013] In one embodiment, the first colloid is connected to the second colloid.

[0014] In one embodiment, the diaphragm assembly includes a sound film and a dome. The sound 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. There is a window on the inner fixing portion. The dome is connected to the inner fixing portion and closes the window. The leakage hole is provided on the dome, and the waterproof and breathable membrane is connected to the dome.

[0015] In one embodiment, the dome is connected to the inner side of the inner fixing portion. The sound film further includes a lower fixing portion disposed around the dome. The cross-section of the lower fixing portion is L-shaped. The lower fixing portion is connected to the inner fixing portion and forms an embedding groove. The edge of the dome is embedded in the embedding groove, and the lower fixing portion is connected to the dome.

[0016] In one embodiment, the diaphragm assembly includes a sound film. The leakage hole is provided on the sound film, and the waterproof and breathable membrane is connected to the sound film.

[0017] The beneficial effects of the present utility model are as follows: In this sound generating unit, there are multiple waterproof and breathable membranes that seal the leakage holes. During the production and assembly of the sound generating unit, when the waterproof and breathable membranes are contacted and collided, only the outermost waterproof and breathable membrane is damaged, and the inner waterproof and breathable membranes are not damaged. Therefore, the sound generating unit still maintains a good waterproof effect.

[0018] At the same time, due to the provision of multiple waterproof and breathable membranes, the waterproof effect of the sound generating unit can be effectively improved. Even if the outermost waterproof and breathable membrane is damaged and the waterproof effect of the damaged waterproof and breathable membrane is reduced, it can still play a certain blocking role, thereby relieving the water pressure of the lower layer, and further increasing the waterproof margin, so as to fully guarantee the waterproof performance of the sound generating unit.

[0019] The waterproof and breathable membrane disposed on the outside of the diaphragm assembly can also prevent the waterproof and breathable membrane from occupying the internal space of the sound generating unit, ensuring that the sound generating unit can achieve a large amplitude.

[0020] In addition, the sizes of the waterproof and breathable membranes are different, which can effectively reduce the usage amount of the raw materials for manufacturing the waterproof and breathable membranes in the sound generating unit, thereby saving the material cost of the waterproof and breathable membranes. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 It is a cross-sectional view of the sound generating unit according to the first embodiment of the present invention;

[0023] Figure 2 It is an exploded view of a partial structure of the sound generating unit according to the first embodiment of the present invention;

[0024] Figure 3 It is a cross-sectional view of the sound generating unit with another structure according to the first embodiment of the present invention;

[0025] Figure 4 It is a cross-sectional view of the sound generating unit according to the second embodiment of the present invention.

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Basin frame;

[0028] 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;

[0029] 3. Waterproof and breathable film;

[0030] 4. Voice coil;

[0031] 5. Magnetic circuit assembly;

[0032] 61. First colloid; 62. Second colloid;

[0033] 7. Front cover. Detailed implementation manners

[0034] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings.

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] It should be noted that if there are directional indications involved in the embodiments of the present utility model, such as up, down, left, right, front, back..., then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. 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 involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying 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, the meaning of "and / or" that appears 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 various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected 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.

[0040] Embodiment 1

[0041] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is as follows: A sound generating unit, comprising a chassis 1, a diaphragm assembly 2, a waterproof and breathable membrane 3, a voice coil 4 and a magnetic circuit assembly 5. The diaphragm assembly 2 and the magnetic circuit assembly 5 are respectively connected to the chassis 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. Leakage holes 21 are provided on the diaphragm assembly 2. The waterproof and breathable membrane 3 is located outside the diaphragm assembly 2 and covers the leakage holes 21. The number of the waterproof and breathable membranes 3 is multiple. The outermost waterproof and breathable membrane 3 is connected to the diaphragm assembly 2 through a first colloid 61. Among two adjacent waterproof and breathable membranes 3, the contour size of the outer waterproof and breathable membrane 3 is larger than that of the inner waterproof and breathable membrane 3. The inner waterproof and breathable membrane 3 is connected to the other waterproof and breathable membrane 3 or the diaphragm assembly 2 through a second colloid 62. That is to say, among the multiple waterproof and breathable membranes 3, two adjacent waterproof and breathable membranes 3 form a covering relationship, and the outer waterproof and breathable membrane 3 covers the inner waterproof and breathable membrane 3.

[0042] The waterproof and breathable membrane 3 can prevent external water vapor from entering the interior of the sound generating unit through the leakage holes 21, but the gas inside the sound generating unit can exchange with the outside through the leakage holes 21.

[0043] In this embodiment, the diaphragm assembly 2 includes a sound film 22 and a dome 23. The sound film 22 includes an inner fixing part 221, a deformation part 222 and an outer fixing part 223 which are connected in sequence from the inside to the outside. A window is provided on the inner fixing part 221. The dome 23 is connected to the inner fixing part 221 and closes the window. The leakage holes 21 are 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 side of the inner fixing part 221. To ensure the stability of the connection between the sound film 22 and the dome 23, optionally, the sound film 22 further includes a lower fixing part 224 arranged around the dome 23. The cross-section of the lower fixing part 224 is L-shaped. The lower fixing part 224 is connected to the inner fixing part 221 and forms an embedding groove. The edge of the dome 23 is embedded in the embedding groove, and the lower fixing part 224 is connected to the dome 23. It is easy to understand that the inner fixing part 221 and the lower fixing part 224 are an integrally formed structure processed together. For example, the sound film 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 sound film 22 and does not have the dome 23. At this time, the leakage holes 21 are provided on the sound film 22, and the waterproof and breathable membrane 3 is connected to the sound film 22.

[0046] In this embodiment, the number of the waterproof and breathable membranes 3 is two. In other embodiments, the number of the waterproof and breathable membranes 3 can also be three, four or more.

[0047] The central points of the respective waterproof and breathable membranes 3 are all located on the same straight line parallel to the vibration direction of the diaphragm assembly 2, and this straight line is perpendicular to the yoke. Preferably, this straight line is collinear with the central axis of the leakage hole 21.

[0048] The first colloid 61 and the second colloid 62 are respectively in a ring frame shape. The first colloid 61 can be formed by solidifying liquid glue or can be a back glue. Similarly, the second colloid 62 can be formed by solidifying liquid glue or can be a back glue.

[0049] In this embodiment, the waterproof and breathable membrane 3 located inside is connected to the dome 23 through the second colloid 62. It is possible for the first colloid 61 to be connected or not connected to the second colloid 62. As Figure 1 shown, when the first colloid 61 is not connected to the second colloid 62, even if the waterproof and breathable membrane 3 located outside peels off, it will not affect the waterproof and breathable membrane 3 located inside, so that the waterproof and breathable membrane 3 located inside can be more fully protected. As Figure 3 shown, when the first colloid 61 is connected to the second colloid 62, the adjacent two waterproof and breathable membranes 3 and the diaphragm assembly 2 can form a greater bonding force, reducing the risk of peeling off of the waterproof and breathable membrane 3 located outside.

[0050] There is a gap between at least a group of adjacent two waterproof and breathable membranes 3. The existence of the gap can reduce the probability of the waterproof and breathable membrane 3 located inside being damaged.

[0051] Optionally, the sound generating unit further includes a front cover 7 connected to the chassis 1. In this embodiment, the outer fixing portion 223 of the sound film 22 is fixedly connected to the front cover 7. At this time, the sound film 22 is indirectly connected to the chassis 1 through the front cover 7.

[0052] Embodiment Two

[0053] Please refer to Figure 4 . Embodiment Two of the present utility model is a parallel technical solution of Embodiment One. The difference from Embodiment One is that the waterproof and breathable membrane 3 located inside is connected to the waterproof and breathable membrane 3 located outside through the second colloid 62. At this time, it is possible for the first colloid 61 to be connected or not connected to the second colloid 62.

[0054] The above are only alternative embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

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 located outside the diaphragm assembly and covers the leakage holes. The number of the waterproof and breathable films is multiple. The outermost waterproof and breathable film is connected to the diaphragm assembly through a first colloid; among two adjacent waterproof and breathable films, the contour size of the waterproof and breathable film located outside is larger than that of the waterproof and breathable film located inside, and the waterproof and breathable film located inside is connected to the other waterproof and breathable film or the diaphragm assembly through a second colloid.

2. The sound generating unit according to claim 1, wherein: The number of the waterproof and breathable films is two, three or four.

3. The sound generating unit according to claim 1, wherein: The center points of all the waterproof and breathable films are located on the same straight line parallel to the vibration direction of the diaphragm assembly.

4. The sound generating unit according to claim 1, wherein: The first colloid and the second colloid are respectively in a ring frame shape.

5. The sound generating unit according to claim 4, characterized in that: The first colloid and the second colloid are not connected.

6. The sound generating unit according to claim 5, characterized in that: There is a gap between at least one group of two adjacent waterproof and breathable films.

7. The sound generating unit according to claim 4, wherein: The first colloid and the second colloid are connected.

8. The sound generating unit according to claim 1, wherein: 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. An opening window is provided on the inner fixing part. The dome is connected to the inner fixing part and closes the opening window. The leakage hole is provided on the dome, and the waterproof and breathable film is connected to the dome.

9. The sound generating unit according to claim 8, wherein: The dome is connected to the inner side of the inner fixing part. The sounding film further includes a lower fixing part arranged around the dome. The cross section of the lower fixing part is in an L shape. The lower fixing part is connected to the inner fixing part and forms an embedding groove. The edge of the dome is embedded in the embedding groove, and the lower fixing part is connected to the dome.

10. The sound generating unit according to claim 1, wherein: The diaphragm assembly includes a sounding film. The leakage hole is provided on the sounding film, and the waterproof and breathable film is connected to the sounding film.

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