Waterproof loudspeaker

Abstract

The waterproof loudspeaker comprises a frame, a magnetic circuit assembly, a waterproof breathable film and a diaphragm assembly, the magnetic circuit assembly is fixedly connected with the frame, the magnetic circuit assembly comprises a yoke, a central magnetic structure and a side magnetic structure, and the central magnetic structure and the side magnetic structure are respectively arranged on the yoke. A magnetic gap is formed between the side magnetic structure and the center magnetic structure, the center magnetic structure comprises lower magnetic steel, a center washer and upper magnetic steel which are sequentially connected in a stacked mode from bottom to top, and the center magnetic structure is provided with a vertically-through air hole. The interface of the yoke and the lower magnetic steel is provided with a ventilation groove which is communicated with the ventilation hole and the magnetic gap. The waterproof breathable film is arranged on the top surface of the upper magnetic steel and covers the breathable hole; the whole vibrating diaphragm assembly is in an annular frame shape, the inner edge of the vibrating diaphragm assembly is connected with the upper magnetic steel, and the outer edge of the vibrating diaphragm assembly is connected with the basin stand. 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 evolved from life waterproof to IP68-level or even higher-level 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, and it is difficult for the waterproof loudspeaker to rebound to the original design position when leaving the water surface, thereby 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 ventilation hole penetrating up and down, and a ventilation groove communicating the ventilation hole with the magnetic gap is arranged at the interface between the yoke and the lower magnetic steel;

[0008] A waterproof breathable membrane, the waterproof breathable membrane is arranged on the top surface of the upper magnetic steel and covers the ventilation hole;

[0009] 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.

[0010] In one embodiment, the waterproof breathable membrane is adhesively connected to the upper magnetic steel.

[0011] In one embodiment, the upper magnetic steel includes a lower magnetic steel and an upper magnetic steel connected to each other, 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, and the edge area of the top surface of the lower magnetic steel 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 region fixedly connected to the diaphragm assembly.

[0013] In one embodiment, the upper magnet and the lower magnet are integrally formed as an integral structure, 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 covers 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 connection part of 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 which are connected 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 away from the yoke.

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

[0020] The structure of this waterproof loudspeaker is novel. When the waterproof loudspeaker 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 loudspeaker, so that the diaphragm assembly can return to its original designed position, which is beneficial to improving the problem that the performance of the waterproof loudspeaker deteriorates after passing through water, and prolongs the service life of the waterproof loudspeaker.

[0021] When the waterproof loudspeaker 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 loudspeaker and enhancing the reliability of the waterproof loudspeaker.

[0022] The waterproof breathable film is directly arranged on the exposed surface of the upper magnet, which facilitates the assembly of the waterproof breathable film.

[0023] The air vents penetrate through the central magnetic structure. During the assembly process of the central magnetic structure, positioning pins penetrating through the air vents can be used to position the components of the central magnetic structure, thereby improving the assembly accuracy of the waterproof loudspeaker and enhancing the production consistency of the waterproof loudspeaker. Description of the Drawings

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

[0027] 1. Basin frame;

[0028] 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; 224. Vent hole; 225. Vent groove; 23. Edge magnetic structure; 231. Edge magnet; 232. Edge washer; 24. Magnetic gap;

[0029] 3. Waterproof and breathable membrane;

[0030] 4. Voice coil;

[0031] 5. Diaphragm assembly; 51. First diaphragm; 52. Skeleton; 53. Second diaphragm. Detailed implementation manners

[0032] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the drawings.

[0033] 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.

[0034] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, 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.

[0035] In addition, if the description in the embodiments of the present utility model involves "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and cannot be construed as indicating or implying its 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.

[0036] 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 of A, or the solution of B, or the solution that both A and B are satisfied simultaneously. In addition, the technical solutions between the respective 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.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall 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 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.

[0038] Embodiment 1

[0039] Please refer to Figure 1 , Embodiment 1 of the present utility model is: a waterproof loudspeaker, including a chassis 1, a magnetic circuit assembly 2, a waterproof breathable film 3, a voice coil 4, and a diaphragm assembly 5. The diaphragm assembly 5 is connected to the voice coil 4, 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 for the voice coil 4 to move 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 sequentially stacked and connected from bottom to top. The central magnetic structure 22 has a ventilation hole 224 penetrating up and down. An air vent groove 225 communicating the ventilation hole 224 with the magnetic gap 24 is provided at the interface between the yoke 21 and the lower magnetic steel 221. The waterproof breathable film 3 is arranged on the top surface of the upper magnetic steel 223 and covers the ventilation hole 224. Optionally, the waterproof breathable film 3 is adhesively connected to the upper magnetic steel 223. The diaphragm assembly 5 is integrally in a ring frame shape. The inner edge of the diaphragm assembly 5 is connected to the upper magnetic steel 223, and the outer edge of the diaphragm assembly 5 is connected to the chassis 1.

[0040] The ventilation slots 225 are located on the lower magnet 221 and / or the yoke 21, that is, the ventilation slots 225 may be entirely located on the bottom surface of the lower magnet 221, or may be entirely located on the top surface of the yoke 21, or a part of the area may be located on the bottom surface of the lower magnet 221 and another part of the area may be located on the top surface of the yoke 21.

[0041] The side magnetic structure 23 includes a side magnet 231 and a side washer 232. The side magnet 231 is located between the side washer 232 and the yoke 21. The side magnet 231 is fixedly connected to the side washer 232 and the yoke 21 respectively, and the side washer 232 is fixedly connected to the chassis 1.

[0042] The diaphragm assembly 5 is adhesively fixed to the upper magnet 223. In some waterproof speaker products, the upper magnet 223 includes a connected lower magnet 2231 and an upper magnet 2232. 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 the first bonding area fixedly connected to the diaphragm assembly 5. That is, 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.

[0043] To improve the connection stability between the upper magnet 223 and the diaphragm assembly 5, the outer peripheral wall of the upper magnet 2232 is the second bonding area fixedly connected to the diaphragm assembly 5.

[0044] In one embodiment, the upper magnet 2232 and the lower magnet 2231 are an integrally formed one-piece structure, and in this embodiment, the upper magnet 2232 and the lower magnet 2231 are adhesively connected.

[0045] The number of the ventilation holes 224 on the central magnetic structure 22 is one or more. To improve the ventilation efficiency, it is preferred that the number of the ventilation holes 224 on the central magnetic structure 22 is multiple. In this embodiment, the number of the ventilation holes 224 on the central magnetic structure 22 is two. In addition, when the number of the ventilation holes 224 is multiple, the components of the central magnetic structure 22 can be positioned more accurately when using a positioning pin to position the central magnetic structure 22.

[0046] When the number of the ventilation holes 224 is multiple, at this time, a single waterproof ventilation membrane 3 covers one or more of the ventilation holes 224.

[0047] As a preferred embodiment, the communication position between the air vent holes 224 and the air vent grooves 225 is located in the middle of the air vent grooves 225, and both ends of the air vent grooves 225 communicate with the magnetic gap 24. This can make the pressures received by each area of the diaphragm assembly 5 more balanced when the waterproof speaker works, thereby improving the performance of the waterproof speaker.

[0048] In this embodiment, the diaphragm assembly 5 includes a first diaphragm 51, a skeleton 52 and a second diaphragm 53 which are connected in sequence from inside to outside. The second diaphragm 53 is connected to the chassis 1, the skeleton 52 is connected to the voice coil 4, the inner edge of the first diaphragm 51 is connected to the upper magnet 223, and the first diaphragm 51 has an inner folding ring portion which protrudes away from the yoke 21. This can allow the overall volume of the magnetic circuit assembly 2 to be set larger, thereby improving the performance of the waterproof speaker.

[0049] 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 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, is included in the patent protection scope of the present invention.

Claims

1. A waterproof speaker, characterized in that: Comprising a chassis; a magnetic circuit assembly fixedly connected to the chassis, the magnetic circuit assembly including a yoke and a central magnetic structure and side magnetic structures respectively disposed on the yoke, a magnetic gap being formed between the side magnetic structures and the central magnetic structure, the central magnetic structure including a lower magnetic steel, a central washer and an upper magnetic steel stacked and connected in sequence from bottom to top, the central magnetic structure having a ventilation hole penetrating up and down, and a ventilation groove communicating the ventilation hole with the magnetic gap being provided at the interface between the yoke and the lower magnetic steel; a waterproof and breathable film disposed on the top surface of the upper magnetic steel and covering the ventilation hole; a diaphragm assembly integrally in a ring frame shape, an inner edge of the diaphragm assembly being connected to the upper magnetic steel and an outer edge of the diaphragm assembly being connected to the chassis.

2. The waterproof speaker according to claim 1, wherein: The waterproof and breathable film is adhesively connected to the upper magnetic steel.

3. The waterproof speaker according to claim 1, wherein: The upper magnetic steel includes a lower magnetic steel and an upper magnetic steel connected to each other, the lower magnetic steel being connected to the top surface of the central washer, an outer peripheral edge of the lower magnetic steel protruding relative to an outer peripheral edge of the upper magnetic steel, and an edge region of the top surface of the lower magnetic steel being a first bonding region fixedly connected to the diaphragm assembly.

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

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

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

7. The waterproof speaker according to claim 6, wherein: A single waterproof and breathable film covers one or more of the ventilation holes.

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

9. The waterproof speaker according to claim 1, characterized in that: A communication position 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 connected in sequence from inside to outside, the second diaphragm being connected to the chassis, and the first diaphragm having an inner folded ring portion protruding away from the yoke.

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