A side tone vented cavity headphone speaker assembly

Abstract

The utility model relates to earphone loudspeaker technical field discloses a kind of independent cavity helmet earphone loudspeaker assembly of side tone sound hole, comprising: loudspeaker back cover;Loudspeaker yoke, install in the loudspeaker back cover;Loudspeaker front cover support, with the loudspeaker yoke cooperation to form a closed independent sound cavity;Wherein, at least one sound leakage hole is set on the circumference of the loudspeaker back cover;The component further includes a set of sealing mechanism for sealing the independent sound cavity, and the sealing mechanism includes the sealing pad between the inner peripheral wall of the loudspeaker yoke and the lower side of the loudspeaker front cover support.It is positioned quickly and accurately in the utility model that sealing pad is realized by block and slot structure, and the accurate alignment of sound cavity is ensured using positioning rod and positioning seat.This scheme simplifies assembly, reduces artificial skill requirement, solves the problem of unstable performance caused by assembly error through reliable sealing, and guarantees the consistency of high-quality sound effect.

Description

Technical Field

[0001] This utility model relates to the field of headphone speaker technology, and in particular to an independent cavity helmet headphone speaker assembly with a side sound outlet. Background Technology

[0002] In the unique environment of helmet use, the design of the speaker assembly is crucial to providing a clear, high-quality audio experience without affecting the user's perception of ambient sounds. Placing the sound-generating unit within an independent, sealed acoustic cavity and directing sound to the user's ear through specific openings is an effective technique for improving sound quality, particularly the mid-to-low frequency response. Therefore, the structural design of this independent acoustic cavity, especially its assembly precision and sealing reliability, directly determines the final acoustic performance and product durability.

[0003] In existing technologies, the assembly of such helmet-mounted headset speaker assemblies typically relies on relatively conventional sealing and fixing methods. A common approach is to machine a simple annular groove on the mating surface of the speaker frame, and then place a standard O-ring or a rubber sealing strip with an irregular cross-section into the groove. Subsequently, the speaker front cover bracket is placed on top, and pressure is applied to compress and deform the sealing ring to fill the gap. The final fixing and closure of the entire assembly is often achieved by using multiple screw holes on the circumference for locking with micro-screws, or by permanent fixing through ultrasonic welding, adhesive bonding, or other methods. During this process, the alignment between components mainly relies on visual inspection and preliminary matching of the outer contours by the operator.

[0004] However, the assembly methods commonly used in the aforementioned existing technologies have inherent defects in actual production. The core problem lies in the lack of a precise pre-positioning mechanism and a reliable sealing component fixing structure, resulting in large assembly errors and consequently affecting the stability and consistency of sealing performance. Specifically, in the process of closing the front cover bracket with the speaker frame, the sealing ring, simply placed in the groove, is extremely prone to displacement, twisting, or even falling out of the groove due to slight touch or airflow disturbance. Simultaneously, due to the lack of a dedicated guiding and positioning structure, the alignment of the front cover bracket relies entirely on manual operation, making it difficult to guarantee accurate mold closing every time. This misalignment and sealing ring displacement directly lead to significant differences in the sealing performance of the final product, with some products potentially leaking air, severely affecting its acoustic characteristics, reducing the yield rate in the production process, and making it difficult to effectively guarantee the stability of product quality. Therefore, a helmet-mounted headphone speaker assembly with an independent cavity side sound outlet is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an independent cavity helmet headphone speaker assembly with a side sound outlet, aiming to improve the defects of existing general assembly methods due to the lack of precise positioning and reliable sealing structure. During assembly, the sealing ring is prone to displacement, and manual alignment is often inaccurate, resulting in large differences in the sealing performance of the final product and air leakage. This seriously affects the acoustic performance, reduces the yield rate, and makes it difficult to guarantee product quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a helmet-mounted headphone speaker assembly with an independent cavity for side sound output, comprising:

[0007] Speaker back cover;

[0008] A speaker frame is installed inside the rear cover of the speaker.

[0009] The speaker front cover bracket, in conjunction with the speaker frame, forms a sealed, independent acoustic chamber;

[0010] The speaker rear cover has at least one sound leakage hole on its circumference;

[0011] The assembly also includes a sealing mechanism for sealing the independent acoustic chamber, the sealing mechanism including a sealing gasket disposed between the inner peripheral wall of the speaker frame and the lower side of the speaker front cover bracket.

[0012] As a further description of the above technical solution:

[0013] A sealing groove is provided on the inner peripheral wall of the speaker frame to accommodate the sealing gasket.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the sealing groove is provided with a slot; the sealing gasket is provided with a block that engages with the slot.

[0016] As a further description of the above technical solution:

[0017] The sealing gasket is also provided with a sealing block, and the sealing block and the card block are integrally formed.

[0018] As a further description of the above technical solution:

[0019] A sealing protrusion is provided on the upper side of the sealing gasket, and the sealing protrusion abuts tightly against the lower side of the speaker front cover bracket.

[0020] As a further description of the above technical solution:

[0021] A positioning seat is provided in the inner cavity of the speaker rear cover, and multiple positioning rods are provided on the lower side of the speaker front cover bracket. The positioning rods are inserted into the positioning seat.

[0022] As a further description of the above technical solution:

[0023] It also includes a speaker sound outlet that covers the upper side of the speaker front cover bracket; and a sponge filter disposed between the speaker front cover bracket and the speaker sound outlet.

[0024] As a further description of the above technical solution:

[0025] The speaker frame contains a speaker magnet, a speaker coil, and a speaker diaphragm; the assembly also includes a cable electrically connected to the speaker coil.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, by creating sealing grooves and slots on the speaker frame and engaging them with the locking blocks on the sealing gasket, rapid, tool-free installation and precise positioning of the sealing gasket are achieved. Simultaneously, the positioning rod on the speaker front cover bracket engages with the positioning seat inside the speaker rear cover cavity, ensuring precise alignment of the entire sound cavity before closure. This design not only simplifies the production and assembly process and reduces the skill requirements for workers, but also ensures the sealing reliability of the independent sound cavity through the tight contact of the sealing protrusions, laying a solid structural foundation for obtaining consistent, high-quality sound performance and solving the problems of large assembly errors and unstable sealing performance that may exist in existing technologies.

[0028] 2. In this invention, the speaker driver unit is completely encapsulated within an independent acoustic space through the combined action of the speaker rear cover, speaker frame, speaker front cover bracket, and sealing gasket. This avoids interference between the speaker's rearward sound waves and the complex environment inside the helmet, resulting in purer sound quality with lower distortion, especially improving the power and clarity of the low-frequency response. More importantly, the sound vent on the speaker rear cover balances the front and rear acoustic chambers of the speaker, allowing the speaker sound to be directed to the user's ear canal in a clear, full, and uncongested manner. This reduces sound reflection and attenuation within the helmet, improving sound transmission efficiency and clarity, and ultimately providing the user with a more immersive and safer listening experience. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of an independent cavity helmet headphone speaker assembly with a side sound outlet proposed in this utility model;

[0030] Figure 2 An exploded view of an independent cavity helmet headphone speaker assembly with a side sound outlet according to this utility model;

[0031] Figure 3 This is a schematic diagram of the positioning insert of an independent cavity helmet headphone speaker assembly with a side sound outlet proposed in this utility model.

[0032] Figure 4 This is a schematic diagram of the sealing gasket structure of an independent cavity helmet headphone speaker assembly with a side sound outlet according to the present invention.

[0033] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0034] Legend:

[0035] 1. Speaker rear cover; 2. Speaker frame; 3. Speaker magnet; 4. Speaker coil; 5. Speaker diaphragm; 6. Speaker front cover bracket; 7. Foam filter; 8. Speaker sound outlet; 9. Vent hole; 10. Cable; 11. Positioning seat; 12. Slot; 13. Sealing gasket; 14. Sealing block; 15. Locking block; 16. Sealing protrusion; 17. Positioning rod; 18. Sealing groove. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figures 1-5 The present invention provides an embodiment of an independent cavity helmet headphone speaker assembly with a side sound outlet, comprising: a speaker back cover 1 serving as the structural base of the entire assembly and the acoustic rear cavity;

[0038] A speaker frame 2 for supporting the sound-generating unit is installed inside the speaker rear cover 1;

[0039] A speaker front cover bracket 6 that cooperates with the speaker frame 2 to form a sealed independent sound chamber;

[0040] Among them, at least one sound leakage hole 9 for directional sound output is provided on the circumference of the speaker rear cover 1;

[0041] The assembly also includes a sealing mechanism to ensure the airtightness of the acoustic cavity. This sealing mechanism includes a sealing gasket 13 positioned between the inner circumferential wall of the speaker frame 2 and the lower side of the speaker front cover bracket 6. To ensure the secure installation of the sealing gasket 13, a sealing groove 18 is formed on the inner circumferential wall of the speaker frame 2 to precisely accommodate the sealing gasket 13. A locking groove 12 for locking the sealing gasket 13 is further formed on the inner wall of the sealing groove 18. Correspondingly, a locking block 15 is provided on the sealing gasket 13 to engage with the locking groove 12. A sealing block 14, which plays a primary sealing role, is also integrally formed on the sealing gasket 13. This sealing block 14 and the locking block 15 are integrally molded to simplify components and enhance structural strength. To achieve a final compression seal, a sealing protrusion 16 is provided on the upper side of the sealing gasket 13. After assembly, the sealing protrusion 16 presses firmly against the lower side of the speaker front cover bracket 6. To ensure assembly accuracy, a positioning seat 11 is provided in the inner cavity of the speaker rear cover 1 for guiding purposes, and multiple positioning rods 17 that can be precisely inserted are provided on the lower side of the speaker front cover bracket 6. The positioning rods 17 are inserted into the positioning seat 11. The assembly also includes a speaker sound outlet 8 for dust protection, which covers the upper side of the speaker front cover bracket 6. A sponge filter 7 for acoustic tuning and filtering is provided between the speaker front cover bracket 6 and the speaker sound outlet 8. Inside the speaker frame 2, the speaker magnet 3, speaker coil 4, and speaker diaphragm 5, which are the core driving components, are installed. The assembly also includes a cable 10 for transmitting audio signals and electrically connected to the speaker coil 4.

[0042] Specifically, during assembly, the worker first gently presses the sealing gasket 13 with the locking block 15 into the sealing groove 18 of the speaker frame 2. The engagement of the locking block 15 and the groove 12 securely locks it in place, preventing displacement in subsequent processes. Next, when the speaker front cover bracket 6 is closed to the speaker frame 2, its lower positioning rod 17 automatically slides into the positioning seat 11 inside the speaker rear cover 1, thus forcing precise alignment of the two key components. At the moment of complete closure, the sealing protrusion 16 on the upper side of the sealing gasket 13 is pressed tight, forming a uniform and reliable sealing ring across the entire mating surface. This design fundamentally solves the problems of assembly errors and inconsistent product performance caused by inaccurate manual alignment or displacement of the seals.

[0043] Working principle: When using this independent cavity helmet headphone speaker assembly, during assembly, the sealing gasket 13 of the integrally formed sealing block 14 and the locking block 15 is placed into the sealing groove 18 on the inner wall of the speaker frame 2. The locking block 15 and the locking groove 12 engage to achieve quick fixation. Subsequently, the speaker frame 2 assembly, which includes the speaker magnet 3, speaker coil 4, and speaker diaphragm 5, is closed with the speaker front cover bracket 6. During this process, multiple positioning rods 17 on the lower side of the speaker front cover bracket 6 are inserted into the positioning seat 11 inside the speaker rear cover 1, completing the precise alignment of the two key components. After closing, the sealing protrusion 16 on the upper side of the sealing gasket 13 tightly abuts against the lower side of the speaker front cover bracket 6, thus forming a sealed independent sound cavity.

[0044] Driven by an electrical signal, cable 10 transmits the audio signal to the speaker coil 4, driving the speaker diaphragm 5 to vibrate and produce sound. Since the entire drive unit is enclosed within an independent acoustic cavity, its acoustic performance is effectively guaranteed. The generated sound waves are guided and propagate outwards primarily through the sound vents 9 on the circumference of the speaker rear cover 1, achieving a balanced effect between the front and rear acoustic cavities of the speaker. Simultaneously, the sponge filter 7, positioned between the speaker front cover bracket 6 and the speaker outlet 8, filters and adjusts any sound that may leak from the front and provides dust protection, collectively ensuring the acoustic performance and durability of the entire speaker assembly.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 helmet-mounted headphone speaker assembly with an independent cavity for side sound output, characterized in that, include: Speaker back cover (1); The speaker frame (2) is installed inside the speaker rear cover (1); The front cover bracket (6) of the speaker cooperates with the speaker frame (2) to form a sealed independent sound cavity; The speaker rear cover (1) has at least one sound leakage hole (9) on its circumference. The assembly also includes a sealing mechanism for sealing the independent acoustic chamber, which includes a sealing gasket (13) disposed between the inner peripheral wall of the speaker frame (2) and the lower side of the speaker front cover bracket (6).

2. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 1, characterized in that: The inner peripheral wall of the speaker frame (2) is provided with a sealing groove (18) for accommodating the sealing gasket (13).

3. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 2, characterized in that: The inner wall of the sealing groove (18) is provided with a slot (12); the sealing gasket (13) is provided with a locking block (15) that engages with the slot (12).

4. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 3, characterized in that: A sealing block (14) is also provided on the sealing gasket (13), and the sealing block (14) and the card block (15) are integrally formed.

5. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 1, characterized in that: A sealing protrusion (16) is provided on the upper side of the sealing gasket (13), and the sealing protrusion (16) abuts against the lower side of the speaker front cover bracket (6) upward.

6. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 1, characterized in that: A positioning seat (11) is provided in the inner cavity of the speaker rear cover (1), and a plurality of positioning rods (17) are provided on the lower side of the speaker front cover bracket (6), and the positioning rods (17) are inserted into the positioning seat (11).

7. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 1, characterized in that: It also includes a speaker outlet (8) that covers the upper side of the speaker front cover bracket (6); and a sponge filter (7) disposed between the speaker front cover bracket (6) and the speaker outlet (8).

8. The independent cavity helmet headphone speaker assembly with side sound outlet according to claim 1, characterized in that: The speaker frame (2) is equipped with a speaker magnet (3), a speaker coil (4) and a speaker diaphragm (5); the assembly also includes a cable (10) electrically connected to the speaker coil (4).

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