Waterproof loudspeaker

Abstract

The waterproof loudspeaker comprises a frame, a magnetic circuit assembly, a diaphragm assembly and a waterproof breathable film, the magnetic circuit assembly is fixedly connected with the frame, the magnetic circuit assembly comprises a yoke, a central magnetic structure and an edge magnetic structure, the central magnetic structure and the edge magnetic structure are respectively arranged on the yoke, and a magnetic gap is formed between the edge magnetic structure and the central magnetic structure. The central magnetic structure comprises lower magnetic steel, a central washer and upper magnetic steel which are sequentially stacked and connected from bottom to top, the central magnetic structure is provided with an air hole which is through up and down, and an interface of the yoke and the lower magnetic steel is provided with an air groove which is communicated with the air hole and the magnetic gap; the whole diaphragm assembly is in an annular frame shape, the inner edge of the diaphragm assembly is connected with the upper magnetic steel, and the outer edge of the diaphragm assembly is connected with the basin stand. A waterproof breathable film is arranged at the interface of the central washer and the upper magnetic steel, and / or a waterproof breathable film is arranged at the interface of the central washer and the upper magnetic steel; and the waterproof breathable film blocks the breathable holes. The waterproof loudspeaker is novel in structure and can balance air pressure on the inner side and the outer side of the vibrating diaphragm assembly.

Description

Technical Field

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

[0002] With the continuous upgrading of portable electronic products such as mobile phones, smart watches, and tablet computers, the performance requirements for portable electronic products are getting higher and higher. Portable electronic products have developed from life waterproof to require IP68 level or even higher level of waterproof requirements.

[0003] Due to the absence of a waterproof breathable membrane, when the traditional waterproof loudspeaker is subjected to a large water pressure impact, the diaphragm assembly is prone to sink. When the waterproof loudspeaker leaves the water surface, it is difficult to rebound to the original design position, thus deteriorating the acoustic performance of the waterproof loudspeaker and even causing permanent damage. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a waterproof loudspeaker with a new structure, in which the air pressure inside and outside the diaphragm assembly is balanced.

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

[0006] A chassis;

[0007] A magnetic circuit assembly, the magnetic circuit assembly is fixedly connected to the chassis, the magnetic circuit assembly includes a yoke and a central magnetic structure and an edge magnetic structure respectively arranged on the yoke, a magnetic gap is formed between the edge magnetic structure and the central magnetic structure, the central magnetic structure includes a lower magnetic steel, a central washer and an upper magnetic steel which are sequentially stacked and connected from bottom to top, the central magnetic structure has a through hole communicating up and down, and a ventilation groove communicating the through hole with the magnetic gap is arranged at the interface between the yoke and the lower magnetic steel;

[0008] A diaphragm assembly, the diaphragm assembly is integrally in a ring frame shape, the inner edge of the diaphragm assembly is connected to the upper magnetic steel, and the outer edge of the diaphragm assembly is connected to the chassis;

[0009] A waterproof breathable membrane, the waterproof breathable membrane is arranged at the interface between the central washer and the upper magnetic steel, and / or, the waterproof breathable membrane is arranged at the interface between the central washer and the upper magnetic steel; the waterproof breathable membrane blocks the through hole.

[0010] In one embodiment, a receiving cavity for receiving the waterproof breathable membrane is arranged inside the central magnetic structure, and the through hole penetrates through the receiving cavity.

[0011] In one embodiment, the upper magnet includes a lower magnet and an upper magnet connected to each other. The lower magnet is connected to the top surface of the central washer. The outer peripheral edge of the lower magnet protrudes relative to the outer peripheral edge of the upper magnet. The edge area of the top surface of the lower magnet is a first bonding area fixedly connected to the diaphragm assembly.

[0012] In one embodiment, the outer peripheral wall of the upper magnet is a second bonding area fixedly connected to the diaphragm assembly.

[0013] In one embodiment, the upper magnet and the lower magnet are of an integrally formed structure processed integrally, or the upper magnet and the lower magnet are adhesively connected.

[0014] In one embodiment, the number of the air vents on the central magnetic structure is multiple.

[0015] In one embodiment, a single waterproof breathable film blocks one or more of the air vents.

[0016] In one embodiment, the air vent groove is located on the lower magnet and / or the yoke.

[0017] In one embodiment, the communication part between the air vent and the air vent groove is located in the middle of the air vent groove, and both ends of the air vent groove communicate with the magnetic gap.

[0018] In one embodiment, the diaphragm assembly includes a first diaphragm, a skeleton and a second diaphragm connected to each other in sequence from inside to outside. The second diaphragm is connected to the chassis. The first diaphragm has an inner folding ring part, and the inner folding ring part protrudes in a direction away from the yoke.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The structure of this waterproof speaker is novel. When the waterproof speaker leaves the water surface and the surface moisture dries, the cooperation of the waterproof breathable film, the air vents and the air vent grooves can effectively balance the air pressure inside and outside the diaphragm assembly of the waterproof speaker, so that the diaphragm assembly restores to the original designed position, which is beneficial to improving the problem that the performance of the waterproof speaker deteriorates after passing through water, and prolongs the service life of the waterproof speaker.

[0021] When the waterproof speaker is working, the high-temperature air inside it can be conducted to the outside through the waterproof breathable film, improving the heat dissipation effect of the waterproof speaker and enhancing the reliability of the waterproof speaker.

[0022] The waterproof breathable film is clamped inside the central magnetic structure, and it is not easy to fall off, which is beneficial to ensuring the structural stability of the waterproof speaker.

[0023] In addition, a multi-layer waterproof and breathable film can be set as needed to prevent the waterproof performance of the waterproof speaker from directly failing in case of accidental damage to one waterproof and breathable film. Brief Description of the Drawings

[0024] In order 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.

[0025] Figure 1 It is a cross-sectional view of the waterproof speaker according to Embodiment 1 of the present invention;

[0026] Figure 2 It is a cross-sectional view of the waterproof speaker according to Embodiment 2 of the present invention;

[0027] Figure 3 It is a cross-sectional view of the waterproof speaker according to Embodiment 3 of the present invention.

[0028] Explanation of the reference numerals in the drawings:

[0029] 1. Basin frame;

[0030] 2. Magnetic circuit assembly; 21. Yoke; 22. Central magnetic structure; 221. Lower magnet; 222. Central washer; 223. Upper magnet; 2231. Lower sub-magnet; 2232. Upper sub-magnet; 23. Edge magnetic structure; 231. Edge magnet; 232. Edge washer; 24. Magnetic gap; 25. Vent hole; 26. Vent groove;

[0031] 3. Diaphragm assembly; 31. First diaphragm; 32. Skeleton; 33. Second diaphragm;

[0032] 4. Voice coil;

[0033] 5. Waterproof and breathable film. Detailed Embodiments

[0034] The realization of the object, 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 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 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" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution A, or the solution B, or the solution that both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, 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 specified and defined, 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of 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 Figure 1, Embodiment 1 of the present utility model is: a waterproof loudspeaker, which includes a chassis 1, a magnetic circuit assembly 2, a diaphragm assembly 3, a voice coil 4 and a waterproof breathable film 5. The magnetic circuit assembly 2 is fixedly connected to the chassis 1. The magnetic circuit assembly 2 includes a yoke 21, a central magnetic structure 22 and an edge magnetic structure 23 respectively arranged on the yoke 21. A magnetic gap 24 is formed between the edge magnetic structure 23 and the central magnetic structure 22. The central magnetic structure 22 includes a lower magnetic steel 221, a central washer 222 and an upper magnetic steel 223 which are stacked and connected in sequence from bottom to top. The central magnetic structure 22 has a through-hole 25 penetrating up and down. At the interface between the yoke 21 and the lower magnetic steel 221, there is a ventilation groove 26 connecting the through-hole 25 and the magnetic gap 24. The diaphragm assembly 3 is connected to the voice coil 4 arranged corresponding to the magnetic gap 24. The diaphragm assembly 3 is integrally in a ring frame shape. The inner edge of the diaphragm assembly 3 is connected to the upper magnetic steel 223, and the outer edge of the diaphragm assembly 3 is connected to the chassis 1. The waterproof breathable film 5 is arranged at the interface between the central washer 222 and the upper magnetic steel 223. The waterproof breathable film 5 blocks the through-hole 25. Therefore, the outside air can enter the magnetic gap 24 through the through-hole 25 and the ventilation groove 26, while the outside water vapor is blocked by the waterproof breathable film 5 and thus cannot enter the ventilation groove 26.

[0042] A receiving cavity for receiving the waterproof breathable film 5 is arranged in the central magnetic structure 22, and the through-hole 25 penetrates through the receiving cavity. In this embodiment, the receiving cavity is located at the interface between the central washer 222 and the upper magnetic steel 223; all regions of the receiving cavity are located on the top surface of the central washer 222, or all regions of the receiving cavity are located on the bottom surface of the upper magnetic steel 223, or a part of the region of the receiving cavity is located on the bottom surface of the upper magnetic steel 223 and another part of the region is located on the top surface of the central washer 222.

[0043] The edge magnetic structure 23 includes an edge magnetic steel 231 and an edge washer 232. The edge magnetic steel 231 is located between the edge washer 232 and the yoke 21. The edge magnetic steel 231 is fixedly connected to the edge washer 232 and the yoke 21 respectively, and the edge washer 232 is fixedly connected to the chassis 1.

[0044] The diaphragm assembly 3 is adhesively fixed to the upper magnet 223. In some waterproof speaker products, the upper magnet 223 includes a lower magnet 2231 and an upper magnet 2232 that are connected. The lower magnet 2231 is connected to the top surface of the central washer 222. The outer peripheral edge of the lower magnet 2231 protrudes relative to the outer peripheral edge of the upper magnet 2232. The edge area of the top surface of the lower magnet 2231 is a first bonding area fixedly connected to the diaphragm assembly 3. That is to say, when looking down at the upper magnet 223, the top surface of the lower magnet 2231 forms a first bonding area surrounding the upper magnet 2232.

[0045] To improve the connection stability between the upper magnet 223 and the diaphragm assembly 3, the outer peripheral wall of the upper magnet 2232 is a second bonding area fixedly connected to the diaphragm assembly 3.

[0046] In one embodiment, the upper magnet 2232 and the lower magnet 2231 are an integrally formed one-piece structure. In this embodiment, the upper magnet 2232 and the lower magnet 2231 are adhesively connected.

[0047] The number of the air vents 25 on the central magnetic structure 22 is one or more. To improve the air permeability efficiency, it is preferably that the number of the air vents 25 on the central magnetic structure 22 is multiple. In this embodiment, the number of the air vents 25 on the central magnetic structure 22 is two. When the number of the air vents 25 is multiple, at this time, a single waterproof breathable film 5 blocks one or more of the air vents 25.

[0048] The air vent groove 26 is located on the lower magnet 221 and / or the yoke 21, that is, the air vent groove 26 can be completely located on the bottom surface of the lower magnet 221, or can be completely located on the top surface of the yoke 21, or can be partially located on the bottom surface of the lower magnet 221 and the other part located on the top surface of the yoke 21.

[0049] As a preferred implementation manner, the connection position between the air vent 25 and the air vent groove 26 is located in the middle of the air vent groove 26, and both ends of the air vent groove 26 communicate with the magnetic gap 24. This can make the pressures received by each area of the diaphragm assembly 3 more balanced when the waterproof speaker works, thereby improving the performance of the waterproof speaker.

[0050] In this embodiment, the diaphragm assembly 3 includes a first diaphragm 31, a skeleton 32, and a second diaphragm 33 that are connected in sequence from the inside out. The second diaphragm 33 is connected to the chassis 1, the skeleton 32 is connected to the voice coil 4, the inner edge of the first diaphragm 31 is connected to the upper magnet 223, and the first diaphragm 31 has an inner folding ring portion that protrudes away from the yoke 21. In this way, the overall volume of the magnetic circuit assembly 2 can be allowed to be set larger, thereby improving the performance of the waterproof speaker.

[0051] Embodiment 2

[0052] Please refer to Figure 2 , Embodiment 2 of the present invention is an alternative technical solution to Embodiment 1. The difference from Embodiment 1 is that the installation position of the waterproof breathable membrane 5 is different.

[0053] In this embodiment, the waterproof breathable membrane 5 is provided at the interface between the central washer 222 and the lower magnet 221.

[0054] Embodiment 3

[0055] Please refer to Figure 3 , Embodiment 3 of the present invention is an alternative technical solution to Embodiment 1. The difference from Embodiment 1 is that the number of waterproof breathable membranes 5 is two, and the installation positions of the two waterproof breathable membranes 5 are different.

[0056] In this embodiment, one waterproof breathable membrane 5 is provided at the interface between the central washer 222 and the upper magnet 223, and the other waterproof breathable membrane 5 is provided at the interface between the central washer 222 and the lower magnet 221.

[0057] The above are only alternative embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A waterproof speaker, characterized in that: including a speaker frame; a magnetic circuit assembly fixedly connected to the speaker frame. The magnetic circuit assembly includes a yoke, a central magnetic structure and an edge magnetic structure respectively disposed on the yoke. A magnetic gap is formed between the edge magnetic structure and the central magnetic structure. The central magnetic structure includes a lower magnetic steel, a central washer and an upper magnetic steel which are sequentially stacked and connected from bottom to top. The central magnetic structure has a ventilation hole penetrating through the upper and lower parts. A ventilation groove communicating the ventilation hole with the magnetic gap is provided at the interface between the yoke and the lower magnetic steel; a diaphragm assembly integrally in a ring frame shape. The inner edge of the diaphragm assembly is connected to the upper magnetic steel, and the outer edge of the diaphragm assembly is connected to the speaker frame; a waterproof and breathable membrane provided at the interface between the central washer and the upper magnetic steel, and / or a waterproof and breathable membrane provided at the interface between the central washer and the upper magnetic steel; the waterproof and breathable membrane blocks the ventilation hole.

2. The waterproof speaker according to claim 1, wherein: A receiving cavity for receiving the waterproof and breathable membrane is provided in the central magnetic structure, and the ventilation hole penetrates through the receiving cavity.

3. The waterproof speaker according to claim 1, characterized in that: The upper magnetic steel includes a connected lower magnetic steel and upper magnetic steel. The lower magnetic steel is connected to the top surface of the central washer. The outer peripheral edge of the lower magnetic steel protrudes relative to the outer peripheral edge of the upper magnetic steel. The edge area of the top surface of the lower magnetic steel is a first bonding area fixedly connected to the diaphragm assembly.

4. The waterproof speaker according to claim 3, wherein: The outer peripheral wall of the upper magnetic steel is a second bonding area fixedly connected to the diaphragm assembly.

5. The waterproof speaker according to claim 3, wherein: The upper magnetic steel and the lower magnetic steel are of an integrally formed structure by one-piece machining, or the upper magnetic steel and the lower magnetic steel are adhesively connected.

6. The waterproof speaker according to claim 1, wherein: The number of the ventilation holes in the central magnetic structure is multiple.

7. The waterproof speaker according to claim 6, characterized in that: A single waterproof and breathable membrane blocks one or more of the ventilation holes.

8. The waterproof speaker according to claim 1, wherein: The ventilation groove is located on the lower magnetic steel and / or the yoke.

9. The waterproof speaker according to claim 1, wherein: The communication part between the ventilation hole and the ventilation groove is located in the middle of the ventilation groove, and both ends of the ventilation groove communicate with the magnetic gap.

10. The waterproof speaker according to claim 1, wherein: The diaphragm assembly includes a first diaphragm, a skeleton and a second diaphragm which are sequentially connected from inside to outside. The second diaphragm is connected to the speaker frame. The first diaphragm has an inner folded ring portion protruding away from the yoke.

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