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 and a central magnetic structure arranged on the yoke, the central magnetic structure comprises a lower magnetic steel, a central washer and an upper magnetic steel, and the lower magnetic steel, the central washer and the upper magnetic steel are sequentially stacked and connected from bottom to top. The upper magnetic steel comprises a lower magnetic steel and an upper magnetic steel, the lower magnetic steel is connected with the upper magnetic steel and the central washer, the top surface of the central magnetic structure is provided with an air hole, the central magnetic structure is also internally provided with an air groove communicated with the outer wall surface of the central magnetic structure and the air hole, and the air groove is located below the interface of the upper magnetic steel and the lower magnetic steel; the waterproof breathable film is arranged at the interface of the upper magnetic steel and the lower magnetic steel and blocks 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 electro-acoustic 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 requiring 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. When the waterproof loudspeaker leaves the water surface, it is difficult to rebound to the original design position, resulting in a deterioration of the acoustic performance of the waterproof loudspeaker and even 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 disposed on the yoke, the central magnetic structure includes a lower magnet, a central washer, and an upper magnet that are sequentially stacked and connected from bottom to top, the upper magnet includes a lower magnet and an upper magnet, the lower magnet connects the upper magnet and the central washer, the top surface of the central magnetic structure is provided with a ventilation hole, and a ventilation groove communicating the outer wall surface of the central magnetic structure with the ventilation hole is further provided in the central magnetic structure, and the ventilation groove is located below the interface between the upper magnet and the lower magnet;

[0008] A waterproof breathable membrane, the waterproof breathable membrane is disposed at the interface between the upper magnet and the lower magnet, and the waterproof breathable membrane blocks 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 magnet, and the outer edge of the diaphragm assembly is connected to the chassis.

[0010] In one embodiment, a receiving groove is provided at the interface between the upper magnet and the lower magnet, and the waterproof breathable membrane is located in the receiving groove.

[0011] In one embodiment, all regions of the receiving groove are located on the upper magnet; or, all regions of the receiving groove are located on the lower magnet.

[0012] In one embodiment, a part of the region of the receiving groove is located on the upper magnet, and another part of the region of the receiving groove is located on the lower magnet.

[0013] In one embodiment, the air vent groove is provided at the interface between the lower magnet and the central washer.

[0014] In one embodiment, the air vent groove is provided at the interface between the lower magnet and the central washer.

[0015] In one embodiment, the air vent groove is provided at the interface between the lower magnet and the yoke.

[0016] In one embodiment, the number of the air vent holes on the central magnetic structure is multiple.

[0017] In one embodiment, the connection part of the air vent hole and the air vent groove is located in the middle of the air vent groove, and both ends of the air vent groove are communicated with the outer wall surface of the central magnetic structure.

[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 vent holes and the air vent groove 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, which improves the heat dissipation effect of the waterproof loudspeaker and improves the reliability of the waterproof loudspeaker.

[0022] The waterproof breathable film is clamped between the upper magnet and the lower magnet, and the waterproof breathable film is not easy to fall off, which is beneficial to ensuring the structural stability of the waterproof loudspeaker. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying 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.

[0024] Figure 1 It is a cross-sectional view of the waterproof speaker according to the first embodiment of the present invention.

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

[0026] 1. Basin frame;

[0027] 2. Magnetic circuit assembly; 21. Yoke; 22. Central magnetic structure; 221. Lower magnet; 222. Central washer; 223. Lower magnet; 224. Upper magnet; 225. Vent hole; 226. Vent groove; 227. Receiving groove; 23. Edge magnetic structure; 231. Edge magnet; 232. Edge washer;

[0028] 3. Waterproof and breathable membrane;

[0029] 4. Diaphragm assembly; 41. First diaphragm; 411. Inner folded ring part; 42. Skeleton; 43. Second diaphragm;

[0030] 5. Voice coil. Specific embodiments

[0031] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying 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.

[0033] 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 accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed 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.

[0035] 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 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.

[0036] In this application, unless otherwise clearly defined and limited, the terms such as "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 communication inside two elements or the interaction relationship between two elements. 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.

[0037] Embodiment 1

[0038] Please refer to Figure 1 , Embodiment 1 of the present utility model is: a waterproof speaker, including a chassis 1, a magnetic circuit assembly 2, a waterproof breathable film 3, a diaphragm assembly 4, and a voice coil 5. The magnetic circuit assembly 2 is fixedly connected to the chassis 1. The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure 22 and an edge magnetic structure 23 respectively arranged on the yoke 21. The edge magnetic structure 23 is fixedly connected to the chassis 1. A magnetic gap 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 stacked and connected in sequence from bottom to top. The upper magnetic steel includes a lower magnetic steel 223 and an upper magnetic steel 224. The lower magnetic steel 223 is located between the upper magnetic steel 224 and the central washer 222, and the lower magnetic steel 223 is respectively connected to the upper magnetic steel 224 and the central washer 222. A ventilation hole 225 is provided on the top surface of the central magnetic structure 22. A ventilation groove 226 communicating the outer wall surface of the central magnetic structure 22 with the ventilation hole 225 is further provided inside the central magnetic structure 22. The ventilation groove 226 is located below the interface between the upper magnetic steel 224 and the lower magnetic steel 223. It is easy to understand that the ventilation groove 226 communicates with the magnetic gap;

[0039] The waterproof and breathable film 3 is disposed at the interface between the upper magnet 224 and the lower magnet 223. The waterproof and breathable film 3 blocks the ventilation holes 225, so that the air in the magnetic gap can exchange with the outside air, but the water vapor in the outside cannot enter the ventilation groove 226 through the ventilation holes 225;

[0040] The diaphragm assembly 4 is integrally in a ring frame shape. The diaphragm assembly 4 is connected to the voice coil 5 disposed corresponding to the magnetic gap. The inner edge of the diaphragm assembly 4 is connected to the upper magnet, and the outer edge of the diaphragm assembly 4 is connected to the chassis 1.

[0041] The edge magnetic structure 23 includes an edge magnet 231 and an edge washer 232. The edge magnet 231 is located between the edge washer 232 and the yoke 21. The edge magnet 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.

[0042] For the convenience of positioning and installing the waterproof and breathable film 3, a receiving groove 227 is provided at the interface between the upper magnet 224 and the lower magnet 223, and the waterproof and breathable film 3 is located in the receiving groove 227. In this embodiment, all areas of the receiving groove 227 are located on the lower magnet 223. In other embodiments, it is also possible that all areas of the receiving groove 227 are located on the upper magnet 224. Additionally, in a specific product, it is also acceptable that a part of the area of the receiving groove 227 is located on the upper magnet 224 and another part of the area of the receiving groove 227 is located on the lower magnet 223.

[0043] Preferably, the ventilation groove 226 is provided at the interface between the lower magnet 223 and the central washer 222, so that the influence of the arrangement of the ventilation holes 225 on the overall volume of the central magnetic structure 22 can be reduced to a greater extent, which is beneficial to ensuring the magnetic field strength of the waterproof speaker. Specifically, the ventilation groove 226 is located on the bottom surface of the lower magnet 223 and / or the top surface of the central washer 222. In this embodiment, the ventilation groove 226 is a pressing groove provided on the top surface of the central washer 222.

[0044] In other embodiments, the ventilation groove 226 is provided at the interface between the lower magnet 221 and the central washer 222. At this time, the ventilation groove 226 is located on the lower magnet 221 and / or the central washer 222; or the ventilation groove 226 is provided at the interface between the lower magnet 221 and the yoke 21; specifically, it can be selected and set according to actual needs.

[0045] To improve the ventilation efficiency, optionally, the number of the ventilation holes 225 on the central magnetic structure 22 is multiple. In this embodiment, the number of the ventilation holes 225 on the central magnetic structure 22 is two.

[0046] As a preferred embodiment, the communication position between the ventilation hole 225 and the ventilation groove 226 is located in the middle of the ventilation groove 226, and both ends of the ventilation groove 226 communicate with the outer wall surface of the central magnetic structure 22. In this way, when the waterproof speaker works, the pressure received by each area of the diaphragm assembly 4 is more balanced, thereby improving the performance of the waterproof speaker.

[0047] In this embodiment, the diaphragm assembly 4 includes a first diaphragm 41, a skeleton 42 and a second diaphragm 43 which are connected in sequence from inside to outside. The second diaphragm 43 is connected to the chassis 1, the skeleton 42 is connected to the voice coil 5, the inner edge of the first diaphragm 41 is connected to the upper magnet, and the first diaphragm 41 has an inner folded ring portion 411 which 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.

[0048] 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 any 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 basin frame; a magnetic circuit component, which is fixedly connected to the basin frame. The magnetic circuit component includes a yoke and a central magnetic structure provided on the yoke. The central magnetic structure includes a lower magnetic steel, a central washer, and an upper magnetic steel that are sequentially stacked and connected from bottom to top. The upper magnetic steel includes a lower magnetic steel and an upper magnetic steel. The lower magnetic steel connects the upper magnetic steel and the central washer. The top surface of the central magnetic structure is provided with ventilation holes, and a ventilation groove communicating with the outer wall surface of the central magnetic structure and the ventilation holes is further provided in the central magnetic structure. The ventilation groove is located below the interface between the upper magnetic steel and the lower magnetic steel; a waterproof breathable membrane, which is provided at the interface between the upper magnetic steel and the lower magnetic steel, and the waterproof breathable membrane blocks the ventilation holes; a diaphragm component, the diaphragm component is integrally in a ring frame shape, the inner edge of the diaphragm component is connected to the upper magnetic steel, and the outer edge of the diaphragm component is connected to the basin frame.

2. The waterproof speaker according to claim 1, wherein: A receiving groove is provided at the interface between the upper magnetic steel and the lower magnetic steel, and the waterproof breathable membrane is located in the receiving groove.

3. The waterproof speaker according to claim 2, characterized in that: All regions of the receiving groove are located on the upper magnetic steel; or, all regions of the receiving groove are located on the lower magnetic steel.

4. The waterproof speaker according to claim 2, wherein: A part of the region of the receiving groove is located on the upper magnetic steel, and another part of the region of the receiving groove is located on the lower magnetic steel.

5. The waterproof speaker according to claim 1, wherein: The ventilation groove is provided at the interface between the lower magnetic steel and the central washer.

6. The waterproof speaker according to claim 1, wherein: The ventilation groove is provided at the interface between the lower magnetic steel and the central washer.

7. The waterproof speaker according to claim 1, wherein: The ventilation groove is provided at the interface between the lower magnetic steel and the yoke.

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

9. The waterproof speaker according to claim 1, wherein: The connection part of 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 outer wall surface of the central magnetic structure.

10. The waterproof speaker according to claim 1, wherein: The diaphragm component includes a first diaphragm, a skeleton, and a second diaphragm that are sequentially connected from inside to outside. The second diaphragm is connected to the basin frame. The first diaphragm has an inner folded ring part, and the inner folded ring part protrudes away from the yoke.

Images