A sound production device

Abstract

The utility model provides a kind of sound production device, belong to acoustics field, a kind of sound production device, including front cavity shell, the horn inner core is equipped in the front cavity shell, the front cavity shell with the horn inner core is sealed and forms front cavity cavity between, first sound hole is equipped on the front cavity shell, second sound hole is located in the first sound hole side, waterproof air-permeable membrane is equipped in the end of second sound hole away from the front cavity cavity, and the second sound hole is by multiple pinholes composition;Sealing cover is also equipped on the front cavity shell, the sealing cover can be back and forth switched between the first sound hole and the second sound hole and seal the first sound hole or the second sound hole;By the setting of the first sound hole and the second sound hole, realize the different acoustics purposes of two states in deep water and air, both can guarantee tone quality in air, and underwater sound production can also be realized.

Description

Technical Field

[0001] This utility model relates to a sound-generating device. Background Technology

[0002] With the increasing popularity and development of products such as mobile phones, watches, and smart wearables, people have higher and higher requirements for the use environment of speakers, especially in swimming and diving environments. However, dynamic speakers, as "air speakers", cannot vibrate under water pressure, and the speaker cannot work properly. Balancing sound quality and ensuring underwater sound transmission has become an urgent problem to be solved for wearable products, especially waterproof watches.

[0003] Existing technical solutions: Current dynamic waterproof horns use glue or gaskets to seal the front and rear chambers. In underwater conditions, this prevents water from entering the rear chamber and damaging the horn. When not underwater, the residual water in the front chamber is removed. Therefore, underwater, the horn is only protected from damage, but water entering the front chamber compresses the diaphragm, preventing it from vibrating and producing sound. Most existing underwater sound-producing devices are piezoelectric horns, which do not need to transmit sound through air vibration but directly transmit sound waves through solid materials or liquids (such as water). However, piezoelectric horns have insufficient bass performance and are expensive, failing to meet everyday sound quality requirements. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned traditional technologies and provide a sound-generating device.

[0005] The purpose of this utility model is achieved through the following technical measures: a sound-generating device, including a front cavity housing, a speaker core disposed inside the front cavity housing, and a front cavity cavity formed by sealing the front cavity housing and the speaker core, characterized in that: the front cavity housing is provided with a first sound outlet hole, a second sound outlet hole located on one side of the first sound outlet hole, a waterproof and breathable membrane disposed at the end of the second sound outlet hole away from the front cavity cavity, and the second sound outlet hole is composed of a plurality of small holes; the front cavity housing is also provided with a sealing cover, the sealing cover being able to switch back and forth between the first sound outlet hole and the second sound outlet hole to seal either the first sound outlet hole or the second sound outlet hole.

[0006] As an improvement, the sealing cover includes a first sealing cover that can move linearly, the first sealing cover covering the first sound outlet and the second sound outlet, and also includes a first lever that can push the first sealing cover to move linearly.

[0007] As a further improvement, the sealing cover includes a second sealing cover that can move in an arc, the second sealing cover being able to cover the first sound outlet and also covering the second sound outlet, and also includes a second lever that can move the second sealing cover in an arc.

[0008] As a further improvement, the front cavity housing extends to provide a sound outlet channel at the position of the first sound outlet hole.

[0009] As a further improvement, the sound outlet channel is provided with a movable through hole that allows the sealing cover to pass through, and the movable through hole is located at the connection between the sound outlet channel and the front cavity housing.

[0010] As a further improvement, the first sound outlet is located directly above the vibrating component of the speaker core.

[0011] As a further improvement, the area of ​​the first sound outlet is 5% larger than the area of ​​the vibrating component of the speaker core.

[0012] As a further improvement, the total area of ​​all the holes is greater than 5% of the area of ​​the vibrating component of the horn core.

[0013] As a further improvement, the area of ​​a single aperture is <2 mm².

[0014] Due to the adoption of the above technical solution, the advantages of this utility model compared with the prior art are: By setting the first sound hole and the second sound hole, different acoustic applications can be achieved in two states: deep water and air. It can ensure sound quality in air and also achieve underwater sound generation.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure working in air according to Embodiment 1; Appendix Figure 2 This is a schematic diagram of the underwater operation structure in Embodiment 1; Appendix Figure 3 This is a schematic diagram of the front cavity housing as described in Embodiment 1; Appendix Figure 4 This is a schematic diagram of the structure working in air according to Example 2; Appendix Figure 5 This is a schematic diagram of the underwater operation structure in Example 2; Appendix Figure 6 It is attached Figure 4 Cross-sectional view; Appendix Figure 7 It is attached Figure 5 Cross-sectional view. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Example 1: As shown in the attached document Figure 1 -Appendix Figure 3 As shown, a sound-generating device is placed inside a housing 1, including a front cavity housing 2. A speaker core 3 is provided inside the front cavity housing 2. The front cavity housing 2 and the speaker core 3 are sealed together by glue or sealing foam to form a front cavity 4.

[0022] The front cavity housing 2 is provided with a first sound outlet 21, which is located directly above the vibration component of the speaker core 3. The area of ​​the first sound outlet 21 is greater than 5% of the area of ​​the vibration component of the speaker core 3, with 8% being the optimal choice, to ensure smooth airflow and achieve higher acoustic performance. A second sound outlet 22 is located on one side of the first sound outlet 21. The end of the second sound outlet 22 away from the front cavity 4 is provided with a waterproof and breathable membrane 5, and the second sound outlet 22 is composed of multiple small holes. The area of ​​a single small hole is <2mm², to prevent the waterproof and breathable membrane 5 from being damaged by water pressure due to excessively large hole diameter. The total area of ​​all the small holes is greater than 5% of the area of ​​the vibration component of the speaker core 3, which can achieve higher acoustic performance.

[0023] The front cavity housing 2 is also provided with a sealing cover 6. The sealing cover 6 can be made of silicone or fluororubber or other waterproof materials. The sealing cover 6 can switch back and forth between the first sound outlet 21 and the second sound outlet 22 to seal the first sound outlet 21 or the second sound outlet 22.

[0024] The sealing cover 6 includes a second sealing cover 63 that can move in an arc. One end of the second sealing cover 6 is rotatably fixed to the housing 1. The second sealing cover 6 can cover the first sound outlet 21 and the second sound outlet 22. It also includes a second lever 64 that can move the second sealing cover 63 in an arc. By moving the second lever 64, the second sealing cover 63 can switch between the first sound outlet 21 and the second sound outlet 22.

[0025] Example 2: As attached Figure 4 -Appendix Figure 7 As shown: The structure is the same as in Embodiment 1, except that the front cavity housing 2 extends a sound outlet channel 23 at the position of the first sound outlet 21. The sound outlet channel 23 can reduce sound loss, guide the sound waves to be output in a directional manner, and form a strong front cavity resonance to enhance the loudness of the human voice. The sealing cover 6 includes a first sealing cover 61 that can move linearly. The first sealing cover 61 can cover the first sound outlet 21 and the second sound outlet 22. It also includes a first lever 62 that can push the first sealing cover 61 to move linearly. The connection between the sound outlet channel 23 and the front cavity housing 2 is provided with a movable through hole 24 for the first lever 62, allowing the first lever 62 to move through the movable through hole 24. The first lever 62 controls the first sealing cover 61 to switch between the first sound outlet 21 and the second sound outlet 22.

[0026] The working principle of this new type is as follows: When the speaker operates in a normal air environment, the speaker core 3 is powered on, and the diaphragm assembly of the speaker core 3 vibrates, pushing air through the first sound outlet 21 to produce sound. The second sound outlet 22 is sealed by the sealing cover 6 and is in a closed state. When operating underwater, pressing the first lever 62 or moving the second lever 64 moves the sealing cover 6 to the position of the first sound outlet 21, sealing the first sound outlet 21 and opening the second sound outlet 22. Since the second sound outlet 22 is covered with a waterproof and breathable membrane 5, water cannot enter the front cavity 4 to compress the vibration assembly of the speaker core 3, that is, the speaker diaphragm vibrates normally underwater. The sound waves are transmitted to the water through the second sound outlet 22 and act on the waterproof and breathable membrane 5 to achieve simple underwater communication.

[0027] Although both the first sound outlet 21 and the second sound outlet 22 can be used in the air, the waterproof and breathable membrane 5 has a large acoustic impedance, resulting in significant sound loss and affecting SPL. The first sound outlet 21 has a low acoustic impedance and smooth airflow, so the sound is mainly emitted from the first sound outlet 21. Underwater, the first sound outlet 21 is sealed, and the sound is transmitted through the second sound outlet 22. Although the loudness is reduced, it can still meet the basic underwater speech needs.

[0028] In this invention, the first sound outlet 21 and the second sound outlet 22 can be circular, square, or other irregular holes, and the shape of the sealing cover 6 also varies according to the shape of the holes.

[0029] 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 and improvements 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 sound-generating device, comprising a front cavity housing, wherein a speaker core is disposed within the front cavity housing, and a front cavity is formed by sealing the front cavity housing and the speaker core therebetween, characterized in that: The front cavity housing is provided with a first sound outlet and a second sound outlet located on one side of the first sound outlet. The end of the second sound outlet away from the front cavity is provided with a waterproof and breathable membrane, and the second sound outlet is composed of multiple small holes. The front cavity housing is also provided with a sealing cover, which can switch back and forth between the first sound outlet and the second sound outlet to seal either the first sound outlet or the second sound outlet.

2. The sound-generating device according to claim 1, characterized in that: The sealing cover includes a first sealing cover that can move linearly, the first sealing cover can cover the first sound outlet, and the first sealing cover can also cover the second sound outlet, and also includes a first lever that can push the first sealing cover to move linearly.

3. The sound-generating device according to claim 1, characterized in that: The sealing cover includes a second sealing cover that can move in an arc, the second sealing cover can cover the first sound outlet hole, and the second sealing cover can also cover the second sound outlet hole, and also includes a second lever that can move the second sealing cover in an arc.

4. A sound-generating device according to claim 2, characterized in that: The front cavity housing extends to provide a sound outlet channel at the position of the first sound outlet hole.

5. A sound-generating device according to claim 4, characterized in that: The sound outlet channel is provided with a movable through hole that allows the sealing cover to pass through. The movable through hole is located at the connection between the sound outlet channel and the front cavity housing.

6. The sound-generating device according to claim 1, characterized in that: The first sound outlet is located directly above the vibrating component of the speaker core.

7. A sound-generating device according to claim 1, characterized in that: The area of ​​the first sound outlet is greater than 5% of the area of ​​the vibrating component of the speaker core.

8. A sound-generating device according to claim 1, characterized in that: The total area of ​​all the holes is greater than 5% of the area of ​​the vibrating component of the horn core.

9. A sound-generating device according to claim 1, characterized in that: The area of ​​a single hole is <2 mm².

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