Waterproof and dustproof loudspeaker

Abstract

The utility model discloses a waterproof dustproof loudspeaker, including casing, protective cover and loudspeaker body, loudspeaker body inserts and installs in the casing, and the protective cover can detachably install in the casing front end, and the casing front end inner wall is provided with annular embedding groove, and the loudspeaker body front end outer wall is integrally formed with annular embedding block, and when the loudspeaker body inserts in the casing, its annular embedding block inserts and installs in the annular embedding groove, and the protective cover front end is provided with dust screen, and the first sealing ring is inserted and installed between the annular embedding groove and the annular embedding block, and the second sealing ring is fixedly installed in the protective cover inboard. The utility model can form high -efficient waterproof structure through double sealing ring and close screw thread connection, realizes reliable dustproof with cooperation fine dust screen, improves installation stability by using the accurate cooperation of positioning post and positioning hole, has the convenient installation and maintenance advantage of modular design, and effectively solves the problem that traditional loudspeaker is easily damaged under the bad environment, and the installation maintenance is complicated.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic equipment technology, and in particular to a waterproof and dustproof speaker. Background Technology

[0002] In modern industry and daily life, loudspeakers, as key devices for sound output, are being used in an increasingly wide range of applications, from outdoor broadcasting, car audio systems, and industrial equipment alarm devices to audio playback devices in humid environments such as bathrooms and kitchens. The usage environments of loudspeakers are becoming more diverse and complex.

[0003] However, the structural design of traditional loudspeakers generally suffers from insufficient waterproof and dustproof performance when facing harsh environments such as humid and dusty conditions.

[0004] Most existing loudspeaker products employ only single protective measures, such as simply installing a dust filter at the front of the loudspeaker or applying a small amount of sealant to the seams of the casing. This method of protection has obvious drawbacks. On the one hand, the mesh of the dust filter is too large or not securely fixed, making it difficult to effectively block the intrusion of fine dust particles. Once dust enters the inside of the loudspeaker, it easily adheres to core components such as the diaphragm and voice coil, leading to sound distortion, degraded sound quality, and even damage to the loudspeaker due to short circuits. On the other hand, the single sealant is susceptible to cracking and aging due to temperature changes and vibrations during long-term use, losing its sealing effect and allowing moisture and liquids to seep into the inside of the loudspeaker, accelerating the corrosion of circuit components and significantly shortening the lifespan of the loudspeaker.

[0005] In addition, the installation and maintenance of traditional loudspeakers are also inconvenient. Some loudspeakers use complex fixed structures, which require professional tools for disassembly and assembly, increasing installation costs and making later maintenance difficult. Some loudspeakers have integrated sealing components and main structure, so once the sealing components are damaged, the entire loudspeaker often needs to be replaced, resulting in waste of resources and increased operating costs.

[0006] Therefore, how to provide a waterproof and dustproof speaker is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a waterproof and dustproof horn. This invention can form a highly efficient waterproof structure through a double sealing ring and a tight threaded connection, and achieve reliable dustproofing with a fine dustproof mesh. At the same time, the precise matching of the positioning pin and the positioning hole improves the installation stability. It also has the advantages of convenient installation and maintenance brought by modular design, effectively solving the problems of traditional horns being easily damaged in harsh environments and having complex installation and maintenance.

[0008] A waterproof and dustproof speaker according to an embodiment of the present invention includes a housing, a protective cover, and a speaker body. The speaker body is inserted and installed inside the housing. The protective cover is detachably installed at the front end of the housing. An annular embedding groove is formed on the inner wall of the front end of the housing. An annular embedding block is integrally formed on the outer wall of the front end of the speaker body. When the speaker body is inserted into the housing, its annular embedding block is embedded and installed in the annular embedding groove. A dustproof mesh is provided at the front end of the protective cover. A first sealing ring is embedded and installed in the annular embedding groove and between it and the annular embedding block. A second sealing ring is fixedly installed on the inner side of the protective cover. The first sealing ring and the second sealing ring are located on the front and rear sides of the annular embedding block, respectively, for waterproof sealing.

[0009] Furthermore, the rear wall of the annular embedded block is provided with several sets of positioning posts at equal intervals, and the annular embedded groove and the first sealing ring are provided with positioning holes corresponding to the positioning posts, and each set of positioning posts is inserted into the positioning holes.

[0010] Furthermore, the outer wall of the housing is provided with an external thread, and the inner wall of the protective cover is provided with a corresponding internal thread. The protective cover and the housing are installed by the rotational engagement of the external thread and the internal thread.

[0011] Furthermore, the outer wall of the protective cover is provided with anti-slip grooves to improve friction.

[0012] Furthermore, a connector is provided on one side of the housing, and the speaker body can be connected to the inner end of the connector via a connecting wire.

[0013] Furthermore, a base is fixedly installed on the rear side of the housing, and mounting seats are integrally formed around the base, with mounting holes through each set of mounting seats.

[0014] Furthermore, the dustproof net is a metal wire mesh or a polymer fiber woven mesh with a mesh size of less than 0.5 mm, and is fixed to the mounting groove opened on the front end face of the protective cover by adhesive or snap-fit.

[0015] Furthermore, both the first and second sealing rings are O-rings with a circular cross-section, made of silicone rubber or EPDM rubber, with a cross-sectional diameter of 2-3 mm, and the inner ring diameter of the first sealing ring is interference-fitted with the outer diameter of the annular insert.

[0016] Furthermore, the number of positioning posts is 3-6 sets, evenly distributed 360 degrees along the circumferential direction of the rear wall of the annular embedded block, the height of each set of positioning posts is adapted to the depth of the positioning hole, and the cross-sectional shape of the positioning posts is cylindrical.

[0017] Furthermore, both the external and internal threads are standard triangular threads with a pitch of 1.5-2 mm and a thread height of 0.8-1.2 mm. The length of the external thread is greater than the length of the internal thread by one pitch to ensure the sealing performance of the thread engagement.

[0018] The beneficial effects of this utility model are:

[0019] 1. In this utility model, the first sealing ring between the annular embedded block and the annular embedded groove, and the second sealing ring on the inner side of the protective cover, respectively form a sealed protection for the speaker body from the front and rear sides, effectively resisting liquid intrusion from water mist, splashes, and even short-term immersion. The dustproof net at the front end of the protective cover, together with the fully enclosed threaded connection between the shell and the protective cover, and the gapless installation structure of the base, constructs a dual dustproof system of filtration and structural sealing, which can prevent solid impurities such as dust and sand particles from entering the speaker, protecting the sound unit and circuit components from the effects of dust accumulation.

[0020] 2. In this utility model, the speaker body, housing, and protective cover are modularly assembled through embedded and threaded connections, which can be disassembled without additional tools, reducing assembly and maintenance costs. Easily damaged parts such as positioning posts, sealing rings, and dustproof nets can be replaced individually, avoiding overall scrapping and improving product economy. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a waterproof and dustproof speaker proposed in this utility model;

[0023] Figure 2 This is a disassembled structural diagram of a waterproof and dustproof speaker proposed in this utility model;

[0024] Figure 3 This is a split view of the first sealing ring of a waterproof and dustproof horn proposed in this utility model;

[0025] Figure 4 This is a rear view of the speaker body of a waterproof and dustproof speaker proposed in this utility model;

[0026] Figure 5 This is an internal view of the protective cover for a waterproof and dustproof speaker proposed in this utility model.

[0027] In the diagram: 1. Housing; 2. Protective cover; 3. Base; 4. Mounting base; 5. Connector; 6. Speaker body; 7. Annular embedded groove; 8. First sealing ring; 9. Annular embedded block; 10. External thread; 11. Dustproof mesh; 12. Positioning hole; 13. Positioning post; 14. Internal thread; 15. Second sealing ring; 16. Anti-slip groove. Detailed Implementation

[0028] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0029] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] like Figure 1-5As shown, this utility model discloses a waterproof and dustproof horn, including a housing 1, a protective cover 2, and a horn body 6. The horn body 6 is inserted and installed inside the housing 1, and the protective cover 2 is detachably installed at the front end of the housing 1, forming a protective structure for the horn body 6.

[0033] The inner wall of the front end of the housing 1 has an annular embedding groove 7, and the outer wall of the front end of the speaker body 6 has an annular embedding block 9 integrally formed to fit the annular embedding groove 7. When the speaker body 6 is inserted into the housing 1, the annular embedding block 9 is embedded in the annular embedding groove 7, achieving initial positioning of the speaker body 6 and the housing 1. To enhance waterproof performance, a first sealing ring 8 is embedded in the annular embedding groove 7 and between it and the annular embedding block 9; a second sealing ring 15 is fixedly installed on the inner side of the protective cover 2. The first sealing ring 8 and the second sealing ring 15 are located on the front and rear sides of the annular embedding block 9, respectively, forming a double sealing structure, effectively preventing water and dust from entering the interior from the connection between the housing 1 and the speaker body 6.

[0034] As a preferred example of this application, to further ensure accurate positioning during installation, 3-6 sets of positioning posts 13 are equidistantly arranged around the rear wall of the annular embedding block 9. In this embodiment, 4 sets are preferred. Each set of positioning posts 13 is evenly distributed 360 degrees along the circumference of the rear wall of the annular embedding block 9, and its cross-sectional shape is cylindrical. The annular embedding groove 7 and the first sealing ring 8 are provided with positioning holes 12 corresponding to the positioning posts 13. Each set of positioning posts 13 is inserted into the respective set of positioning holes 12. During installation, the cooperation between the positioning posts 13 and the positioning holes 12 can effectively prevent the speaker body 6 from rotating relative to the housing 1, and avoid the first sealing ring 8 from being affected by misalignment. Moreover, the height of the positioning posts 13 is adapted to the depth of the positioning holes 12, ensuring the stability of the installation.

[0035] As a preferred example of this application, the outer wall of the housing 1 is provided with an external thread 10, and the inner wall of the protective cover 2 is provided with a corresponding internal thread 14. The protective cover 2 and the housing 1 are installed through the rotational engagement of the external thread 10 and the internal thread 14. To ensure the sealing of the threaded connection, both the external thread 10 and the internal thread 14 are standard triangular threads with a pitch of 1.5-2 mm (preferably 1.8 mm) and a thread height of 0.8-1.2 mm (preferably 1.0 mm). The length of the external thread 10 is greater than the length of the internal thread 14 by 1-2 pitches (preferably 1.5 pitches) to ensure sufficient thread engagement and further enhance the sealing of the connection. In addition, the outer wall of the protective cover 2 is provided with an anti-slip groove 16, which increases the friction between the hand and the protective cover 2, making it convenient for the user to rotate and disassemble the protective cover 2.

[0036] As a preferred example of this application, the protective cover 2 is provided with a dustproof net 11 at its front end. The dustproof net 11 is a metal wire mesh or a polymer fiber woven mesh. In this embodiment, stainless steel wire mesh is preferred, with a mesh size of less than 0.5 mm, which can effectively block dust from entering the speaker. The dustproof net 11 is fixed by adhesive or snap-fit.

[0037] Preferably, it is snapped into the mounting groove on the front end face of the protective cover 2, which ensures a stable installation and facilitates replacement.

[0038] As a preferred example of this application, a connector 5 is provided on one side of the housing 1, and the speaker body 6 can be connected to the inner end of the connector 5 via a connecting wire for connecting to external audio equipment and transmitting audio signals. A base 3 is fixedly installed on the rear side of the housing 1, and mounting seats 4 are integrally formed around the base 3. Each set of mounting seats 4 has through holes, and the speaker can be fixedly installed on a wall, bracket, or other mounting position using bolts or other fasteners, thereby improving the stability of the installation.

[0039] As a preferred example of this application, both the first sealing ring 8 and the second sealing ring 15 are O-rings with a circular cross-section, made of silicone rubber or EPDM rubber (preferably silicone rubber in this embodiment), which has good elasticity and aging resistance. Their cross-sectional diameter is 2-3 mm (preferably 2.5 mm in this embodiment), and the inner ring diameter of the first sealing ring 8 is interference-fitted with the outer diameter of the annular insert block 9, ensuring that the first sealing ring 8 tightly fits the annular insert block 9 and the annular insert groove 7, further improving the sealing effect.

[0040] In this specific embodiment, during installation, the waterproof and dustproof speaker is first inserted into the housing 1, so that the annular insert block 9 is inserted into the annular insert groove 7, and the positioning post 13 is inserted into the positioning hole 12 to complete the positioning. Then, the first sealing ring 8 is inserted into the annular insert groove 7, located on the rear side of the annular insert block 9. Next, the protective cover 2 is rotated and engaged with the external thread 10 of the housing 1 through the internal thread 14. During the installation process, the second sealing ring 15 on the inner side of the protective cover 2 is pressed against the front side of the annular insert block 9, forming a double seal together with the first sealing ring 8. Finally, the speaker is fixed in the installation position by the mounting seat 4 on the base 3, and can be used by connecting to external audio equipment through the connector 5.

[0041] Working principle: First, the speaker body 6 is inserted into the housing 1. The annular insert 9 at the front end of the speaker body 6 and the annular insert groove 7 on the inner wall of the front end of the housing 1 cooperate with each other. At this time, the positioning post 13 on the rear wall of the annular insert 9 is inserted into the positioning hole 12 in the annular insert groove 7 and the first sealing ring 8. Precise positioning ensures that the annular insert 9 and the annular insert groove 7 are completely aligned, avoiding misalignment of the first sealing ring 8. During installation, elastic deformation occurs due to compression, tightly fitting the inner wall of the annular insert groove 7 and the outer wall of the annular insert 9, blocking the gap at the connection between the housing 1 and the speaker body 6, forming the first waterproof barrier, preventing water from entering the speaker from the rear. Then, the protective cover 2 is installed on the front end of the housing 1. The internal thread 14 on the inner wall of the protective cover 2 rotates and engages with the external thread 10 on the front side of the outer wall of the housing 1. During the tightening process, the thread engagement forms a tight spiral seal line. At the same time, the second sealing ring 15 on the inner side of the protective cover 2 is squeezed between the front end face of the annular insert 9 and the inner side of the protective cover 2. The front sealing barrier is formed by the first sealing ring 8 and the second sealing ring 15 sealing the annular embedded block 9 from the front and rear sides respectively, forming a double waterproof structure to further enhance the waterproof performance. In addition, the dustproof mesh 11 at the front end of the protective cover 2 is made of metal wire mesh or polymer fiber woven mesh with a pore size of less than 0.5 mm. It is fixed to the mounting groove opened on the front end of the protective cover 2 by adhesive or snap-fit, effectively blocking dust particles, sand and other solid impurities from entering the speaker. On the rear side of the housing 1, the mounting base 3 is integrally formed on the mounting seat 4. The speaker is fixed in the required position by bolts and other fasteners through the through mounting holes. The base 3 and the mounting seat 4 are integrally formed without exposed gaps to prevent dust from entering from the rear. Finally, the speaker body 6 is connected to the inner end of the connector 5 on one side of the housing 1 through the connecting wire for connecting with external audio equipment to transmit audio signals. Since the connection wire interface between the connector 5 and the speaker body 6 is located inside the housing, external dust cannot enter through the interface.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof and dustproof speaker, characterized in that, The device includes a housing (1), a protective cover (2), and a speaker body (6). The speaker body (6) is inserted into the housing (1). The protective cover (2) is detachably installed at the front end of the housing (1). An annular embedding groove (7) is provided on the inner wall of the front end of the housing (1). An annular embedding block (9) is integrally formed on the outer wall of the front end of the speaker body (6). When the speaker body (6) is inserted into the housing (1), its annular embedding block (9) is embedded in the annular embedding groove (7). A dustproof net (11) is provided at the front end of the protective cover (2). A first sealing ring (8) is embedded in the annular embedding groove (7) and between it and the annular embedding block (9). A second sealing ring (15) is fixedly installed on the inner side of the protective cover (2). The first sealing ring (8) and the second sealing ring (15) are located on the front and rear sides of the annular embedding block (9) respectively for waterproof sealing.

2. The waterproof and dustproof speaker according to claim 1, characterized in that, The annular embedded block (9) has several sets of positioning posts (13) arranged equidistantly around its rear wall. The annular embedded groove (7) and the first sealing ring (8) are provided with positioning holes (12) corresponding to their positioning posts (13). Each set of positioning posts (13) is inserted into each set of positioning holes (12).

3. A waterproof and dustproof speaker according to claim 1, characterized in that, The outer wall of the housing (1) is provided with an external thread (10), and the inner wall of the protective cover (2) is provided with a corresponding internal thread (14). The protective cover (2) and the housing (1) are installed by the rotational engagement of the external thread (10) and the internal thread (14).

4. A waterproof and dustproof speaker according to claim 1, characterized in that, The outer wall of the protective cover (2) is provided with anti-slip grooves (16) to improve friction.

5. A waterproof and dustproof speaker according to claim 1, characterized in that, A connector (5) is provided on one side of the housing (1), and the speaker body (6) can be connected to the inner end of the connector (5) via a connecting wire.

6. A waterproof and dustproof speaker according to claim 1, characterized in that, A base (3) is fixedly installed on the rear side of the housing (1). The base (3) is integrally formed with mounting seats (4) around its perimeter, and each set of mounting seats (4) has through holes.

7. A waterproof and dustproof speaker according to claim 1, characterized in that, The dustproof net (11) is a metal wire mesh or a polymer fiber woven mesh with a mesh size of less than 0.5 mm, and is fixed to the installation groove on the front end of the protective cover (2) by adhesive or snap-fit.

8. A waterproof and dustproof speaker according to claim 1, characterized in that, The first sealing ring (8) and the second sealing ring (15) are both O-rings with a circular cross-section, made of silicone rubber or EPDM rubber, with a cross-sectional diameter of 2-3 mm, and the inner ring diameter of the first sealing ring (8) is interference-fitted with the outer diameter of the annular insert (9).

9. A waterproof and dustproof speaker according to claim 2, characterized in that, The number of positioning posts (13) is 3-6 sets, which are evenly distributed 360 degrees along the circumferential direction of the rear wall of the annular embedded block (9). The height of each set of positioning posts (13) is adapted to the depth of the positioning hole (12), and the cross-sectional shape of the positioning posts (13) is cylindrical.

10. A waterproof and dustproof speaker according to claim 3, characterized in that, Both the external thread (10) and the internal thread (14) are standard triangular threads with a pitch of 1.5-2 mm and a thread height of 0.8-1.2 mm. The length of the external thread (10) is 1-2 pitches longer than the length of the internal thread (14) to ensure the sealing of the thread engagement.

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