CN216673066U

CN216673066U - Electronic device

Info

Publication number: CN216673066U
Application number: CN202220077740.5U
Authority: CN
Inventors: 张腾
Original assignee: Xian Wingtech Information Technology Co Ltd
Current assignee: Xian Wingtech Information Technology Co Ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-06-03
Anticipated expiration: 2032-01-12

Abstract

The utility model discloses an electronic device, which is characterized in that a sealing element with a first part and a second part is arranged, the first part is connected to a circuit board in a sealing way, the second part is connected between a first shell and a second shell in a sealing way, the sealing element is provided with a sound transmission channel penetrating through the first part and the second part, a first opening of the sound transmission channel is communicated with an avoidance hole arranged on the circuit board corresponding to a sound receiving hole of a microphone, and a second opening of the sound transmission channel is communicated with a sound inlet hole of the second shell. By adopting the scheme of the utility model, on one hand, sound can be transmitted to the microphone from the sound inlet hole; on the other hand, the sealing of the whole sound transmission channel by one sealing element can be realized, so that the sealing performance of the microphone can be effectively ensured, the effects of reducing parts and simplifying the operation complexity of assembly can be achieved, the cost is saved, and the production efficiency is improved.

Description

Electronic device

Technical Field

The present invention relates to the field of electronic products, and in particular, to an electronic device.

Background

To enable voice input, a microphone is typically provided in an electronic device (e.g., a cell phone, a tablet computer, a smart watch). Due to the requirement of compact structure of the electronic device, when the microphone is disposed in the electronic device, the front case and the rear case of the electronic device are generally used to respectively dispose the sound outlet channels, and the sound transmission is realized by using the sound outlet channels of the rear case and the front case.

However, the sound receiving quality of the electronic device is directly affected due to the sealing property of the microphone. In the related art, the microphone sealing scheme in the electronic equipment adopts two modes, one is that the sound outlet channels of the front shell and the rear cover of the electronic equipment are sealed by using foam, but the foam is small in size, easy to deviate after being assembled and easy to damage, so that the sealing effect is poor; the other is to use the way of combining and sealing the foam and the rubber sleeve, namely, the rubber sleeve is used for sealing and fixing the sound outlet channel of the rear cover, and the sound outlet channel of the front shell is connected by the foam in a sealing way. However, the rubber sleeve in the mode needs to be opened independently, and the rubber sleeve needs to be bonded by using back glue when being fixed, so that the operation is troublesome and the production cost is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses electronic equipment which can reduce parts and simplify the operation complexity of assembly, thereby saving cost, improving production efficiency, and simultaneously reducing sealing difficulty and improving sealing effect.

In order to achieve the above object, the present invention discloses an electronic device comprising:

the casing comprises a first casing and a second casing, the first casing is connected with the second casing to form an accommodating space, and the second casing is provided with a sound inlet hole communicated with the accommodating space;

the microphone is arranged in the accommodating space and is provided with an acoustic hole for receiving sound;

the circuit board is arranged in the accommodating space and is electrically coupled with the microphone, and a avoidance hole is formed in the circuit board corresponding to the sound receiving hole of the microphone; and

a sealing member including a first portion and a second portion connected to the first portion, the first portion being sealingly connected to a circuit board, the second portion being sealingly connected between the first housing and the second housing;

the sealing member is provided with a sound transmission channel which penetrates through the first part and the second part, the sound transmission channel is provided with a first opening and a second opening, the first opening corresponds to the avoiding hole and is communicated with the avoiding hole, and the second opening corresponds to the sound inlet hole and is communicated with the sound inlet hole.

As an alternative implementation, in an embodiment of the present invention, the first portion is provided with a first protruding portion protruding toward the circuit board, and the first protruding portion is compressed between the circuit board and the first portion;

the second portion is provided with a second protruding portion protruding towards the second shell, and the second protruding portion is pressed between the first shell and the second shell.

As an optional implementation manner, in an embodiment of the present invention, the first protruding portion is an annular protrusion located around the periphery of the avoiding hole, or the first protruding portion is multiple and the multiple first protruding portions are arranged annularly along the center of the avoiding hole;

the second bulge is an annular bulge located on the periphery of the sound inlet hole, or the second bulges are multiple and are annularly arranged along the center of the sound inlet hole.

As an alternative implementation manner, in an embodiment of the utility model, the first protruding portion and the second protruding portion are integrally formed on the first portion and the second portion, respectively.

As an optional implementation manner, in an embodiment of the present invention, an opening size of the first opening is larger than an opening size of the avoiding hole, and an opening size of the second opening is larger than an opening size of the sound inlet hole.

As an alternative implementation manner, in an embodiment of the present invention, the sound transmission channel includes a first channel portion and a second channel portion connected to the first channel portion, the first channel portion has the first opening, the second channel portion has the second opening, and an opening width of the second channel portion gradually increases from a position connected to the first channel portion to a direction away from the first channel portion.

As an optional implementation manner, in an embodiment of the present invention, the first casing includes a first base plate and a first side plate surrounding and connected to an outer edge of the first base plate, the second casing includes a second base plate and a second side plate surrounding and connected to an outer edge of the second base plate, and the second side plate is connected to an outer periphery of the first side plate, so that the first base plate, the first side plate, and the second base plate together form the accommodating space;

the second side plate is provided with the sound inlet hole, a first through hole communicated with the accommodating space is formed in the position, corresponding to the sound inlet hole, of the first side plate, the second portion is connected to the joint of the first side plate and the second side plate in a sealing mode, and the first portion extends into the accommodating space from the first through hole and is connected with the circuit board in a sealing mode.

As an optional implementation manner, in an embodiment of the present invention, a position limiting part is disposed on the first substrate at a position corresponding to the first portion, and the position limiting part is used for limiting the position of the first portion.

As an alternative implementation manner, in an embodiment of the present invention, the circuit board is fixedly disposed on the first substrate through a screw structure, and the first portion is pressed against the circuit board through the screw structure.

As an optional implementation manner, in an embodiment of the present invention, a dust-proof net is disposed at a connection portion of the first housing and the second housing, and the dust-proof net is disposed corresponding to the sound inlet hole.

Compared with the prior art, the utility model has the beneficial effects that:

according to the electronic device provided by the embodiment of the utility model, the sealing element with the first part and the second part is arranged, the sealing element is provided with the sound transmission channel penetrating through the first part and the second part, the first opening of the sound transmission channel is communicated with the avoiding hole arranged on the circuit board corresponding to the sound receiving hole of the microphone, and the second opening of the sound transmission channel is communicated with the sound inlet hole of the second shell, so that on one hand, sound can be transmitted to the microphone from the sound inlet hole; on the other hand, because the first part of sealing member is connected in circuit board, the second part of sealing member is connected between first casing and second casing, like this, can realize the sealed with circuit board, first casing and second casing respectively of a sealing member, promptly, the sealed of whole sound transmission passageway is realized to a sealing member to not only can effectively ensure the sealing performance of microphone, can also reach the effect that reduces the part and simplify the operation complexity of equipment simultaneously, and then practice thrift the cost, improve production efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;

fig. 2 is an exploded view of an electronic device disclosed in an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of an electronic device as disclosed in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a sealing member of an electronic device according to an embodiment of the disclosure;

FIG. 5 is a top view of a seal of an electronic device as disclosed in an embodiment of the present application;

fig. 6 is a cross-sectional view of a seal of an electronic device along the direction B-B as disclosed in an embodiment of the present application.

Icon:

10. a housing; 11. a first housing; 111. a first substrate; 111a, a stopper; 112. a first side plate; 113. a first through hole; 12. a second housing; 121. a second substrate; 122. a second side plate; 123. a sound inlet hole; 13. An accommodating space; 20. a circuit board; 201. avoiding holes; 21. a microphone; 211. a sound receiving hole; 30. a seal member; 301. a first portion; 301a, a first boss; 302. a second portion; 302a, a second boss; 31. a sound transmission channel; 311. a first channel portion; 312. a second channel portion; 311a, a first opening; 312a, a second opening; 40. a dust screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1 to 4 together, an embodiment of the utility model provides an electronic device, which includes a housing 10, a circuit board 20, a microphone 21, and a sealing member 30. The housing 10 may include a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 are connected to form an accommodating space 13, and the second housing 12 is provided with a sound inlet 123 communicating with the accommodating space 13. The microphone 21 has a sound receiving hole 211 for receiving sound, the microphone 21 can be electrically coupled to the circuit board 20, the microphone 21 and the circuit board 20 are disposed in the accommodating space 13 together, and a avoiding hole 201 is disposed on the circuit board 20 at a position corresponding to the sound receiving hole 211 of the microphone 21. The sealing member 30 may include a first portion 301 and a second portion 302, the first portion 301 is hermetically connected to the circuit board 20, the second portion 302 is hermetically connected between the first housing 11 and the second housing 12, and the sealing member 30 is provided with a sound transmission channel 31 penetrating the first portion 301 and the second portion 302, the sound transmission channel 31 may have a first opening 311a and a second opening 312a, the first opening 311a corresponds to the escape hole 201 and communicates with the escape hole 201, and the second opening 312a corresponds to the sound inlet hole 123 and communicates with the sound inlet hole 123.

In the electronic device provided in this embodiment, by providing the sealing member 30 having the first portion 301 and the second portion 302, and providing the sound transmission channel 31 penetrating through the first portion 301 and the second portion 302, the first opening 311a of the sound transmission channel 31 is communicated with the avoiding hole 201 of the circuit board 20 corresponding to the sound receiving hole 211 of the microphone 21, and the second opening 312a of the sound transmission channel 31 is communicated with the sound inlet hole 123 of the second housing 12, it can be seen that the sound transmission channel of the electronic device provided in this embodiment is the sound inlet hole 123, the sound transmission channel 31, the avoiding hole 201, and the sound receiving hole 211, so that on one hand, sound can be transmitted from the sound inlet hole 123 to the microphone 21; on the other hand, since the first portion 301 of the sealing member 30 is hermetically connected to the circuit board 20, and the second portion 302 of the sealing member 30 is hermetically connected between the first casing 11 and the second casing 12, it is possible to achieve sealing of one sealing member 30 with the circuit board 20, the first casing 11 and the second casing 12, respectively, that is, sealing of the whole sound transmission channel is achieved by one sealing member 30, so that not only can the sealing performance of the microphone 21 be effectively ensured, but also the effects of reducing parts and simplifying the operation complexity of assembly can be achieved, thereby saving the cost and improving the production efficiency.

In addition, since the circuit board 20 is provided with the avoidance hole 201 at a position corresponding to the sound receiving hole 211 of the microphone 21, that is, the microphone 21 is disposed on the side of the circuit board 20 away from the sealing member 30, the microphone 21 can be effectively prevented from being extruded by the sealing member 30, and the microphone 21 can be normally used.

It will be appreciated that the above mentioned electronic devices may include, but are not limited to, cell phones, tablet computers, smart watches, etc. having a microphone. Taking the electronic device as a mobile phone as an example, the housing 10 may be a housing of the mobile phone, and the first housing 11 and the second housing 12 may be a front housing and a rear housing of the mobile phone, respectively.

In the present embodiment, the electronic device is a mobile phone, and the first housing 11 and the second housing 12 are a front shell and a rear shell of the mobile phone, respectively.

As shown in fig. 1 to 4, in some embodiments, the first housing 11 may include a first substrate 111 and a first side plate 112 surrounding and connected to an outer edge of the first substrate 111, the second housing 12 may include a second substrate 121 and a second side plate 122 surrounding and connected to an outer edge of the second substrate 121, the second side plate 122 is connected to an outer periphery of the first side plate 112, so that the first substrate 111, the first side plate 112, and the second substrate 121 together form an accommodating space 13, and the accommodating space may be used for accommodating devices such as a circuit board, a microphone, a camera module, a speaker, and the like. The second side plate 122 may be provided with the sound inlet 123. Therefore, the second side plate is connected to the outer edge of the first side plate, so that on one hand, the connection area of the second side plate and the first side plate can be increased, and the connection of the second shell and the first shell is more reliable; on the other hand, the path from the external water to the joint of the first shell and the second shell to the accommodating space can be prolonged, so that the waterproof performance of the electronic equipment is improved.

Further, the second side plate 122 is connected to the outer periphery of the first side plate 112 through a threaded structure or a snap structure, so that the second portion 302 is pressed between the first side plate 112 and the second side plate 122 through the threaded structure or the snap structure, so as to achieve the sealing connection between the second portion 302 and the first housing 11 and the second housing 12, thereby ensuring the sealing effect between the sound transmission channel 31 and the first housing 11 and the second housing 12.

In some embodiments, considering that the sound inlet hole 123 is disposed on the second side plate 122, and the first portion 301 of the sealing member 30 is to be hermetically connected to the circuit board 20, the second portion 302 of the sealing member 30 is to be hermetically connected between the first housing 11 and the second housing 12. Therefore, the first through hole 113 communicating with the accommodating space 13 may be disposed on the first side plate 112 at a position corresponding to the sound inlet hole 123, so that the second portion 302 may be hermetically connected to the joint of the first side plate 112 and the second side plate 122, and the first portion 301 extends into the accommodating space 13 from the first through hole 113 to be hermetically connected with the circuit board 20. Thus, the sealing of the sound transmission channel of the microphone by one sealing member 30 can be realized, the effect of reducing parts is achieved, the production cost and the labor cost of parts are saved, and in addition, the operation complexity of assembly can be simplified, and the production efficiency is improved.

Further, a position limiting portion 111a is disposed on the first substrate 111 at a position corresponding to the first portion 301, and the position limiting portion 111a is used for limiting the position of the first portion 301, so as to position the assembly of the sealing member 30. Specifically, the position-limiting portion 111a may be a position-limiting groove disposed on the first substrate 111, so that the first portion may be engaged in the position-limiting groove to limit the position of the sealing member 30 on the first substrate 111. Of course, it will be appreciated that in other embodiments, the first base 111 may be provided with a raised boss and then a retaining groove to retain the first portion 301 of the sealing member 30. Alternatively, a protrusion may be provided on the first substrate 111, and then a groove may be provided on the first portion 301 of the sealing member 30 to achieve a positive connection therebetween.

In some embodiments, when the circuit board 20 is disposed in the accommodating space 13, the circuit board 20 is mainly fixedly disposed on the first substrate 111 through a screw structure, so that the first portion 301 is pressed against the circuit board 20 through the screw structure, so as to achieve a sealing connection between the first portion 301 and the circuit board 20, thereby ensuring a sealing effect between the sound transmission channel 31 and the circuit board 20. Specifically, threaded holes may be formed in the first substrate 111 and the circuit board 20, and screws or bolts may penetrate through the threaded holes in the first substrate 111 and the circuit board 20, so as to fix the circuit board 20 on the first substrate 111, and the first portion 301 may be better extruded by the circuit board 20 due to the fastening effect of the screws or bolts, so that the first portion 301 and the circuit board 20 are more tightly connected, which is beneficial to improving the sealing effect of the first portion 301 on the avoiding hole 201 of the circuit board 20.

Further, considering that the avoiding hole 201 is mainly used to correspond to the sound hole communicating with the microphone 21 and to enable the external sound to be transmitted to the sound hole of the microphone 21, in order to ensure that the sound can be conducted from the first opening 311a to the sound receiving hole 211 through the avoiding hole 201 as much as possible, the opening size of the avoiding hole 201 may be larger than the opening size of the sound receiving hole 211.

In some embodiments, considering that the sound inlet hole 123 is a through hole, dust and particles may easily enter during use, and when the dust and particles enter the sound transmission channel 31 through the sound inlet hole 123, the dust and particles may enter the microphone 21 through the sound transmission channel 31, so that the sound receiving hole 211 is accumulated with dust and cannot receive sound normally. Therefore, a dust screen 40 may be disposed at the connection portion of the first housing 11 and the second housing 12, the dust screen 40 is disposed corresponding to the sound inlet hole 123, and dust or particles may be blocked outside the sound transmission channel 31 by the dust screen 40, so as to prevent the dust or particles from entering the sound transmission channel 31, thereby ensuring the sound collecting effect of the microphone 21. Specifically, in order to effectively fix the dust-proof net 40, so as to prevent the dust-proof net 40 from being displaced during use and thus not effectively covering the sound inlet 123, the dust-proof net 40 may be clamped between the inner surface of the second side plate 122 and the second portion 302 of the sealing member 30, and at the same time, a groove for positioning and accommodating the dust-proof net 40 may be provided at the second portion 302 of the sealing member 30.

Further, the size of the dust-proof net 40 may be larger than the opening size of the sound inlet hole 123, so as to effectively prevent dust and particles from entering the sound transmission channel 31.

Referring to fig. 4 to 6, in some embodiments, in order to improve the reliability of the sealing element 30 and ensure the sealing effect, the sealing element 30 may be made of silicon gel. It is understood that in other embodiments, the material of the sealing member 30 may be fluororubber, plastic or foam.

Further, the opening size of the second opening 312a may be larger than that of the sound inlet hole 123, so that the sound can be completely transmitted from the sound inlet hole 123 to the sound transmission channel 31 and then completely transmitted from the sound transmission channel 31 to the avoidance hole 201, that is, the sound entering the sound inlet hole 123 can be completely transmitted to the microphone 21, thereby improving the sound receiving effect.

Considering that the size of the accommodating space 13 is often limited and compact due to the light and thin design of the electronic device of the casing 10, the distance between the outer peripheral surface of the sealing member 30 and the sound transmission channel 31 (i.e., the wall thickness of the sealing member 30) needs to satisfy a certain size to ensure the sound transmission effect. Based on this, the sound transmission channel 31 of the sealing member may include a first channel portion 311 and a second channel portion 312 connected to the first channel portion 311, the first channel portion 311 has a first opening 311a, the size of the first channel portion 311 is the same as that of the first opening 311a, the second channel portion 312 has a second opening 312a, the second channel portion 312 has a tapered structure, and the size of the second channel portion 312 is gradually reduced from a direction away from the second opening 312a, so that the wall thickness of the sealing member 30 meets the requirement, thereby ensuring the sound transmission effect of the sealing member 30.

In some embodiments, in order to improve the sealing effect between the first portion 301 and the circuit board 20, and the second portion 302 and the first side plate 112 and the second side plate 122, the first portion 301 may be provided with a first protrusion 301a protruding toward the circuit board 20, and the first protrusion 301a is compressed between the circuit board 20 and the first portion 301, so that the first portion 301 and the circuit board 20 are in an interference fit to achieve the sealing connection between the first portion 301 and the circuit board 20. Accordingly, the second portion 302 of the sealing member 30 may be provided with a second protrusion 302a protruding toward the second casing 12 (specifically, toward the second side plate 122), and the second protrusion 302a is compressed between the first casing 11 and the second casing 12, so that the second portion 302 and the second casing 12 are in interference fit to achieve the sealing connection between the second portion 302 and the first side plate 112 and the second side plate 122.

Further, the first protrusion 301a may be an annular protrusion annularly surrounding the periphery of the avoiding hole 201, or the first protrusion 301a may be plural, and the plural first protrusions 301a are annularly arranged along the center of the avoiding hole 201, so as to ensure that the first protrusion 301a is disposed around the avoiding hole 201 to lock the sealing range, so that the sound between the sound transmission channel 31 and the circuit board 20 is completely transmitted through the avoiding hole 201 without leakage of other channels, thereby ensuring the sealing effect between the sound transmission channel 31 and the circuit board 20.

Accordingly, the second convex portion 302a may be an annular protrusion located at the outer periphery of the sound inlet hole 123, or the second convex portion 302a may be plural, and the plural second convex portions 302a are arranged annularly along the center of the sound inlet hole 123, thereby ensuring that the second convex portion 302a is provided around the sound inlet hole 123 to lock the sealed range, so that the sound between the second housing 12 and the sound transmission channel 31 is transmitted entirely through the sound inlet hole 123 without leakage of other channels, thereby ensuring the sealing effect between the sound transmission channel 31 and the first and

second housings

11 and 12.

Further, in order to ensure the sealing performance of the sealing member 30 with the circuit board 20 and the second housing 12, improve the reliability of the sealing member 30, and simplify the molding process of the sealing member 30, the first protruding portion 301a and the second protruding portion 302a may be integrally molded with the first portion 301 and the second portion 302, respectively. It is understood that in other embodiments, the first protrusion 301a may be provided separately from the first portion 301, and the second protrusion 302a may be provided separately from the second portion 302.

The assembling process of the sealing member 30 of the electronic device of the embodiment of the present invention will be briefly described as follows:

in the assembling process of the sealing member 30, the first portion 301 of the sealing member 30 may be inserted into the first through hole 113 on the first side plate 112 until the first portion 301 abuts against the limiting portion 111a, and then the circuit board 20 is fixed to the first substrate 111 by a screw or a bolt, at this time, the circuit board 20 and the first portion 301 are in interference fit through the first protruding portion 301a, so as to achieve the sealing effect. Then, the second side plate 122 is fixed to the outer edge of the first side plate 112 by the action of the snap structure, and at this time, the second side plate 122 and the second portion 302 are in interference fit through the second protruding portion 302a, so as to achieve the sealing effect.

Therefore, by adopting the electronic equipment provided by the embodiment, the assembling mode of the sealing element 30 can be simplified, the sealing difficulty is reduced, and the sealing effect is improved.

The electronic device disclosed in the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the electronic device and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An electronic device, comprising:

the microphone is arranged in the accommodating space and is provided with a sound receiving hole for receiving sound;

2. The electronic device according to claim 1, wherein the first portion is provided with a first projecting portion projecting toward the circuit board, the first projecting portion being pressed between the circuit board and the first portion;

3. The electronic device according to claim 2, wherein the first protruding portion is an annular protrusion located around the periphery of the avoiding hole, or the first protruding portions are multiple and arranged annularly along the center of the avoiding hole;

4. The electronic device of claim 2, wherein the first and second protruding portions are integrally formed with the first and second portions, respectively.

5. The electronic device according to claim 1, wherein an opening size of the first opening is larger than an opening size of the avoiding hole, and an opening size of the second opening is larger than an opening size of the sound inlet hole.

6. The electronic device according to claim 5, wherein the sound transmission channel includes a first channel portion and a second channel portion connected to the first channel portion, the first channel portion has the first opening, the second channel portion has the second opening, and an opening width of the second channel portion gradually increases from a position connected to the first channel portion toward a direction away from the first channel portion.

7. The electronic device according to any one of claims 1 to 6, wherein the first housing includes a first base plate and a first side plate enclosing an outer edge of the first base plate, and the second housing includes a second base plate and a second side plate enclosing an outer edge of the second base plate, the second side plate being connected to an outer periphery of the first side plate, so that the first base plate, the first side plate and the second base plate together form the accommodating space;

8. The electronic device according to claim 7, wherein a position limiting portion is disposed on the first substrate at a position corresponding to the first portion, and the position limiting portion is configured to limit the position of the first portion.

9. The electronic device of claim 7, wherein the circuit board is fixedly disposed on the first substrate via a screw structure, and the first portion is pressed against the circuit board via the screw structure.

10. The electronic device according to any one of claims 1 to 6, wherein a dust screen is provided at a joint of the first housing and the second housing, and the dust screen is provided corresponding to the sound inlet.