Patent Application
20240207907
The present application relates to the field of acoustic technology, and in particular to an acoustic waterproof structure and an electronic device.
Currently, many smart wearable products have acoustic functions, such as smart watches, smart bracelets, etc. Smart wearable products generally have built-in microphones, which are configured to collect user voices to implement corresponding voice interaction functions.
In related art, the microphone's sound-pickup end is covered with a waterproof membrane. The waterproof membrane is located between the sound-pickup hole of the product housing and the sound-pickup end of the microphone to provide waterproof protection for the microphone. When smart wearable products are used in scenarios such as rainfall, swimming or showering, water will adhere to the surface of the waterproof membrane via the sound pickup hole. The accumulated water on the waterproof membrane will limit the vibration of the waterproof membrane, thus hindering the sound conduction of the waterproof membrane, causing the microphone to have low loudness and noise when collecting external sounds. Even if part of the water is thrown out by shaking the product, there will still be moisture remaining on the waterproof membrane, which will still affect the sound-pickup quality of the microphone.
The main purpose of the present application is to propose an acoustic drainage structure, aiming to realize the drainage of the sound-pickup module.
In order to achieve the above purpose, the present application proposes an acoustic drainage structure, which includes:
the connector is connected to the breathable waterproof membrane and the sound-pickup unit, and the connector is provided with a second sound-pickup hole; the breathable waterproof membrane is configured to cover the first sound-pickup hole and the second sound-pickup hole, and the breathable waterproof membrane, a hole wall of the second sound-pickup hole and the sound-pickup unit are enclosed to form a sound-pickup cavity; and the connector is provided with an air guiding passage communicated with the sound-pickup cavity and the accommodating cavity, so as to make the sound-generating unit drive the breathable waterproof membrane to vibrate.
In an embodiment according to the present application, the air guiding passage is configured to penetrate an outer wall of the connector and the hole wall of the second sound-pickup hole.
In an embodiment according to the present application, the air guiding passage includes at least two air guiding branches provided at the connector, and at least two of the air guiding branches are communicated with the sound-pickup cavity and the accommodating cavity.
In an embodiment according to the present application, each air guiding branch is provided at intervals, and each air guiding branch is communicated with the sound-pickup cavity and the accommodating cavity.
In an embodiment according to the present application, at least two air guiding branches are communicated with each other; and/or
the air guiding passage further includes at least one communication branch, and each communication branch is communicated with two air guiding branches.
In an embodiment according to the present application, the air guiding passage includes two air guiding branches provided at the connector; and
the two air guiding branches are symmetrically provided at two opposite sides of the second sound-pickup hole, and each air guiding branch is communicated with the sound-pickup cavity and the accommodating cavity.
In an embodiment according to the present application, the air guiding passage includes a plurality of air guiding branches provided at the connector; and
In an embodiment according to the present application, the connector includes an adhesive layer and a supporting layer;
In an embodiment according to the present application, the housing is further provided with a sound-generating hole communicated with the accommodating cavity, and the sound-generating unit is provided corresponding to the sound-generating hole; and
In an embodiment according to the present application, the acoustic drainage structure has a drainage state when the breathable waterproof membrane vibrates; and
In addition, the present application further proposes an electronic device including the above-mentioned acoustic drainage structure.
In an embodiment according to the present application, the electronic device further includes:
The technical solution according to the present application is to provide a second sound-pickup hole and an air guiding passage on the connector that connects the sound-pickup unit and the waterproof membrane, so that the air guiding passage is communicated with the accommodating cavity of the housing and the sound-pickup cavity enclosed by the breathable waterproof membrane, the hole wall of the second sound-pickup hole and the sound-pickup unit. The sound wave generated by the sound-generating unit during working are configured to drive the air in the accommodating cavity and air guiding passage to vibrate, thereby driving the air in the sound-pickup cavity to drive the breathable waterproof membrane to vibrate, so that the breathable waterproof membrane can shake off the moisture attached to the surface of the breathable waterproof membrane. The shaken moisture can also be discharged outward via the first sound-pickup hole, which can effectively solve the problem of water accumulation on the breathable waterproof membrane, realize the drainage of the sound-pickup module, and improve the sound-pickup quality of the sound-pickup unit.
In order to explain the embodiments of the present application or the technical solutions in the existing technology more clearly, the accompanying drawings needed to be used in the description of the embodiments or the existing technology will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, other accompanying drawings can be obtained based on the provided accompanying drawings without exerting creative efforts for those of ordinary skill in the art.
The technical solutions in the embodiments according to the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments according to the present application, and it is clear that the described embodiments are only a part of the embodiments according to the present application, and not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative labor fall within the scope of the present application.
It should be noted that in the embodiment of the present application, all directional indications (such as up, down, left, right, front, back or the like) are only used to explain the relative positional relationship, movement and so on between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
In the present application, unless otherwise clearly stated and limited, the terms “connection”, “fixed” and so on should be understood in a broad sense. For example, “connection” can be a fixed connection, a detachable connection or an integral body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components or the interaction between two components, unless otherwise clearly stated and limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
In addition, if there are descriptions involving “first”, “second” or the like, the descriptions of “first”, “second” or the like are only for descriptive purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity of the technical features indicated. Therefore, features defined as “first” and “second” May explicitly or implicitly include at least one of these features. The words “and/or” and “and/or” appearing throughout the text have the same meaning, and both mean that it includes three parallel solutions, taking “A and/or B” as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions of various embodiments can be combined with each other, but it is based on that those of ordinary skill in the art can realize. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by the present application.
The present application proposes an acoustic drainage structure. The acoustic drainage structure is applied to electronic devices, and the electronic devices include but are not limited to smart watches and smart bracelets.
In an embodiment according to the present application, as shown in
In this embodiment, the housing 1 can be the housing of the above-mentioned electronic device. The housing 1 is provided with an accommodating cavity 1a that can accommodate the sound-pickup module 2 and the sound-generating unit 3. The sound-pickup module 2 and the sound-generating unit 3 can be arranged in opposing arrangements to reduce signal interference between them. The housing 1 can be made of waterproof material, such as metal material, plastic material, etc. The first sound-pickup hole 1b is provided at the outer wall of housing 1 and is communicated with the accommodating cavity 1a. The first sound-pickup hole 1b is configured for allowing external sounds to enter the accommodating cavity 1a, so that the sound-pickup module 2 in the accommodating cavity 1a can collect the sound from the external environment. The sound-generating unit 3 may be a speaker or the like.
The sound-pickup unit 21 in the sound-pickup module 2 is configured to collect sound signals. The breathable waterproof membrane 23 in the sound-pickup module 2 is configured to realize the waterproof protection of the sound-pickup unit 21. The breathable waterproof membrane 23 can be connected to the cavity wall of the accommodating cavity 1a by adhesion or other means. The connector 22 in the sound-pickup module 2 is configured to realize the connection between the sound-pickup unit 21 and the breathable waterproof membrane 23, so that the sound-pickup unit 21 is installed and fixed at the cavity wall of the accommodating cavity 1aalong with the breathable waterproof membrane 23. After the breathable waterproof membrane 23, connector 22 and sound-pickup unit 21 are installed and fixed, the first sound-pickup hole 1band the sound-pickup cavity 2a are separated by a breathable waterproof membrane 23. When the external sound reaches the breathable waterproof membrane 23 via the first sound-pickup hole 1b, it causes the breathable waterproof membrane 23 to vibrate. When the breathable waterproof membrane 23 vibrates, it causes the air in the sound-pickup cavity 2a to vibrate. The vibration is captured by the sound-pickup unit 21, thereby realizing the collection of sound by the sound-pickup unit 21. The sound-pickup cavity 2a can be provided in the axial direction of the first sound-pickup hole 1b, so as to alleviate the problem that when the first sound-pickup hole 1b and the sound-pickup cavity 2a are provided to be staggered, the conduction loss is large during the process that the sound is conducted from the first sound-pickup hole 1b to the sound-pickup cavity 2a, and the sound collected by the sound-pickup unit 21 has low loudness and high distortion. The sound-pickup unit 21 can be a microphone, a sound sensor, etc.
The connector 22 can connect the sound-pickup unit 21 and the breathable waterproof membrane 23 by adhesion or other methods. The connector 22 is located between the breathable waterproof membrane 23 and the sound-pickup unit 21, and is provided with an air guiding passage 22b communicated with the sound-pickup cavity 2a and the accommodating cavity 1a. As shown by the sound wave conduction direction as indicated by the dotted arrow in
In an embodiment, as shown in
In this embodiment, the adhesive layer 221 is connected to the side of the breathable waterproof membrane 23 away from the first sound-pickup hole 1b and the side of the supporting layer 222 away from the sound-pickup unit 21, so that the supporting layer 222 is connected and fixed with the breathable waterproof membrane 23 by the adhesive layer 221. The side of the supporting layer 222 away from the adhesive layer 221 can be connected to the sound-pickup unit 21 by adhesion, screwing, etc., so that the sound-pickup unit 21 is installed and fixed on the supporting layer 222. When the adhesive layer 221 is connected to the supporting layer 222, the first through hole 22a1 on the adhesive layer 221 and the second through hole 22a2 on the supporting layer 222 are communicated with each other to form a second sound-pickup hole 22a, the air guiding passage 22b can be provided at the adhesive layer 221 or the supporting layer 222, or the air guiding passage 22b is provided on both the adhesive layer 221 and the supporting layer 222, so that the sound-generating unit 3 can output sound into the accommodating cavity 1a to drive the air in the air guiding passage 22b and the sound-pickup cavity 2a to drive the breathable waterproof membrane 23 to vibrate, thus realizing the drainage of sound-pickup module 2. The adhesive layer 221 can be a waterproof adhesive layer or a double-sided adhesive layer, and the supporting layer 222 can be a plastic or resin layer, which is not limited here.
In an embodiment, as shown in
In this embodiment, the sound-generating unit 3 may be a speaker, and the sound leaking hole 3a is configured to discharge the air pushed when the diaphragm inside the speaker vibrates and configured for the speaker to output sound into the accommodating cavity 1a. When the sound-generating unit 3 is located at the sound-generating hole 1c, the accommodating cavity 1a becomes the rear sound cavity of the sound-generating unit 3. When the sound-generating unit 3 works, the sound-generating unit 3 will output sound into the accommodating cavity 1a via the sound leaking hole 3a and drive the air in the accommodating cavity 1a to vibrate, thereby driving the air in the air guiding passage 22b and the sound-pickup cavity 2a to vibrate, and then driving the breathable waterproof membrane 23 to vibrate, thus realizing the drainage of the sound-pickup module 2.
In practical applications, the above-mentioned connector 22 has various structural forms. In order to better explain the present application, possible structural forms of the connector 22 are described below with reference to the first embodiment to the eighth embodiment. It is worth pointing out that in order to facilitate an intuitive understanding of the structural form of the air guiding passage 22b, the accompanying drawings cited in the first embodiment to the eighth embodiment all show in the form of the air guiding passage 22b penetrating through the front surface of the connector 22 and the rear surface of the connector 22, but the actual air guiding passage 22b can be completely provided inside the connector 22 and become a peripherally closed pipeline structure, or the air guiding passage 22b can also be designed as a strip-shaped trough structure, etc. Therefore, as long as it is a hole, groove, channel, cavity, pipe, flow channel or other virtual structures provided on the connector 22 and configured to communicate with the accommodating cavity 1a and the sound-pickup cavity 2a, it should be considered to be substantially the same as the air guiding passage 22b in the present application, and all should fall within the protection scope of the present application.
Referring to
In this embodiment, one air guiding passage 22b is provided, and the air guiding passage 22b is a single-passage structure that is communicated with the sound-pickup cavity 2aand the accommodating cavity 1a. The shape of the air guiding passage 22b includes but is not limited to straight line, arc shape or wavy shape. At this time, the air vibration in the accommodating cavity 1a will cause the air vibration in the sound-pickup cavity 2a via the single air guiding passage 22b, thereby driving the breathable waterproof membrane 23 to vibrate to achieve drainage of the breathable waterproof membrane 23. Since only one breathable passage is provided on the connector 22, the processing procedure of the connector 22 can be reduced as much as possible while realizing the drainage function of the sound-pickup module 2, thus saving the processing cost of the connector 22, and it is also conducive to maintaining the structural strength of the connector 22, so that the connector 22 has a larger connection surface with the breathable waterproof membrane 23 and the sound-pickup unit 21, thereby maintaining the stability of the connector 22 when connecting the breathable waterproof membrane 23 and the sound-pickup unit 21.
Referring to
In this embodiment, the air guiding passage 22b may include two or more air guiding branches 22b1, two air guiding branches 22b1 or multiple air guiding branches 22b1 are directly communicated. For example, as shown in
In an embodiment, each air guiding branch 22b1 in this embodiment is provided at intervals, and each air guiding branch 22b1 is communicated with the sound-pickup cavity 2a and the accommodating cavity 1a. In this way, each air guiding branch 22b1 can be processed separately without interfering with each other. Each air guiding branch 22b1 can be processed into different shapes and different sizes according to actual needs to improve the flexibility of design of the air guiding branch 22b1.
Referring to
In this embodiment, what is different from the solution in the second embodiment is that some of the air guiding branches 22b1 are communicated via the communication branch 22b2, instead of being directly communicated.
The air guiding branch 22b1 is designed to be communicated via the communication branch 22b2, thereby improving the air circulation between each air guiding branch 22b1 and the air content in the air guiding passage 22b, which is beneficial to exert a stronger driving force on the breathable waterproof membrane 23 by the air in the second sound-pickup hole 22a when the air in the air guiding passage 22b vibrates, thus driving the breathable waterproof membrane 23 to produce a vibration of larger amplitude, improving the strength of the breathable waterproof membrane 23 in shaking off accumulated water on its surface, and improving the drainage effect of the sound-pickup module 2.
Referring to
In this embodiment, the air guiding branch 22b1 is symmetrically provided at two opposite sides of the second sound-pickup hole 22a, the two air guiding branches 22b1 cooperate to form a dual-passage structure that is communicated with the sound-pickup cavity 2a and the container. Each air guiding branch 22b1 adopts a linear extension structure design to reduce the processing difficulty and processing cost of the air guiding branch 22b1. When the air in the accommodating cavity 1a vibrates, the vibration can first be conducted to the sound-pickup cavity 2a and the breathable waterproof membrane 23 via one air guiding branch 22b1, then conducted back into the accommodating cavity 1a via another air guiding branch 22b1; or, the vibration can be conducted to the sound-pickup cavity 2a and the breathable waterproof membrane 23 via two air guiding branches 22b1, and conducted back into the accommodating cavity 1a via two air guiding branches 22b1. In this way, avoiding the problem that under the design of single air guiding branch 22b1, the vibration intensity of the part of the waterproof breathable membrane close to the air guiding branch 22b1 will be greater and the vibration response will be timely, while the vibration intensity of the part of the waterproof breathable membrane away from the air guiding branch 22b1 is weaker and the vibration response lags behind, thus enabling the balanced driving of all parts of the waterproof breathable membrane.
Referring to
Referring to
Referring to
In this embodiment, the plurality of air guiding branches 22b1 can be evenly distributed around the second sound-pickup hole 22a, or distributed on two opposite sides of the second sound-pickup hole 22a, so as to facilitate the processing of each air guiding branch 22b1. By providing the plurality of the air guiding branches 22b1, the air content in the air guiding passage 22b can be increased, thus improving the driving strength for the breathable waterproof membrane 23, and enabling to carry out targeted structural design for each air guiding branch 22b1, for example, separately designing the shape and size of the air guiding branch 22b1. The setting and design of the air guiding branch 22b1 are more flexible, so that the connector 22 can be configured to meet the driving requirements of the breathable waterproof membrane 23 under the conditions of different housing 1 structures and different sound-generating unit 3.
The present application further proposes an electronic device. The electronic device includes but is not limited to smart watches and smart bracelets.
In an embodiment according to the present application, referring to
In this embodiment, because when the sound-pickup unit 21 collects the user's voice in the external environment, the sound output by the sound-generating unit 3 will also be conducted to the sound-pickup unit 21 via the accommodating cavity 1a, the air guiding passage 22b and the sound-pickup cavity 2a, the sounds that the sound-pickup unit 21 may collect include the user's voice, noise from the external environment and noise output from the speaker. The noise collected by the sound-pickup unit 21 is relative to the user's voice, because the main function of the sound-pickup unit 21 is to collect the user's voice, therefore, the non-user voice collected by the sound-pickup unit 21 becomes noise. In order to suppress or eliminate the above-mentioned noise from the external environment and the noise output from the speaker that collected by the sound-pickup unit 21, a filter module 4 is provided in the electronic device, the filter module 4 can be provided in the accommodating cavity 1a of the housing 1, using the filter module 4 to filter the sound signals collected by the pickup unit 21 to reduce the sound signal in the non-user voice band, reduce the signal amount of noise signals transmitted to the communication module 5, reduce the noise included in the user's voice transmission process when performing voice interaction by the communication module 5, and improve the clarity of the user's voice transmission when performing voice interaction by the communication module 5.
The specific structure of the acoustic drainage structure in this embodiment refers to the above-mentioned embodiments. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, therefore, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described again one by one here.
In order to better explain this embodiment, the structural design and working process of this electronic device are described below.
The sound-generating unit 3 in this electronic device can be a speaker. When the speaker is working, the diaphragm in the speaker vibrates front and back and forms front amplitude and rear amplitude. Taking the speaker shown in
A long and narrow air guiding passage 22b is provided on the connector 22 of the electronic device, so that the air guiding passage 22b can pass the sound signal in the frequency band of 30 HZ to 100 HZ output by the speaker, it can make maximum use of the pushing effect of the speaker diaphragm on the air in the sound-pickup cavity 2a, thus causing the breathable waterproof membrane 23 to vibrate with a larger amplitude, thereby shaking off the accumulated water on the breathable waterproof membrane 23, making the acoustic drainage structure in the electronic device enter the drainage state, and realizing the ideal drainage effect of the sound-pickup module 2 in the electronic device. In addition, the speaker can further output sounds with frequencies less than 30 HZ or greater than 100 HZ, such as 300 HZ to 6 kHZ, at this time, the acoustic drainage structure will no longer be in the drainage state, but will enter the normal sound-generating state, the speaker can be configured to play audio signals such as user voice or music. Taking the air guiding passage 22b designed as a passage structure with a rectangular cross-sectional shape as an example, two of the three parameters of the length, width and height of the air guiding passage 22b can be controlled by the control variable method, and the remaining parameter is used as a variable, by testing the loudness of sounds in different frequency bands when the sounds in different frequency bands pass through the air guiding passage 22b, the optimal size of the air guiding passage 22b for sound signals in the frequency band of 30 HZ to 100 HZ can be obtained. For example, setting the extension length of the air guiding passage 22b to 4 mm, setting the width of the air guiding passage 22b to 0.15 mm, and using the height (that is, depth) of the air guiding passage 22b as the variable, when the height of the air guiding passage 22b is respectively set to 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.6 mm and 0.8 mm, the loudness curves of sounds with different frequencies passing through the air guiding passage 22b as shown in
In order to ensure the sound-pickup quality of the sound-pickup unit 21, it should be reduced as much as possible that the sound of 30 HZ to 100 HZ is picked up by the sound-pickup unit 21 and amplified into the communication module 5, thereby affecting the call quality of communication module 5. Therefore, as shown in
In addition, a digital filter can be further added to the communication module 5, the digital filter is configured to perform secondary reduction to the sound below the 100 HZ frequency band, thus further improving the sound-pickup quality of the sound-pickup unit 21. Since the speech frequency band of human speech ranges from 300 HZ to 6 kHZ, the filter module 4 will not interfere with the user's voice and will not affect the call quality of this electronic device.
The above embodiments are only some embodiments of the present application, and are not intended to limit the scope of the present application. Under the inventive concept of the present application, any equivalent structure transformation made by using the description and accompanying drawings of the present application, or directly or indirectly applied in other related technical fields, is included within the scope of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202111237652.3 | Oct 2021 | CN | national |
This application is a continuation application of International Application No. PCT/CN2021/138147, filed on Dec. 15, 2021, which claims priority to Chinese Patent Application No. 202111237652.3, filed on Oct. 22, 2021. The disclosures of the above-mentioned applications are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2021/138147 | Dec 2021 | WO |
| Child | 18598264 | US |
