WO2021008536A1

WO2021008536A1 - Loudspeaker assembly and electronic device

Info

Publication number: WO2021008536A1
Application number: PCT/CN2020/101955
Authority: WO
Inventors: 肖寒; 游胜博
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-07-16
Filing date: 2020-07-14
Publication date: 2021-01-21
Also published as: CN112243180A; CN112243180B

Abstract

Disclosed is a loudspeaker assembly, comprising: a housing, the housing being provided with a recess, and an accommodating cavity being provided at the bottom of the recess; a decorative sheet accommodated in the recess, so that the outer surface of the decorative sheet and part of the outer surface of the housing together form a flat or curved surface; a loudspeaker module accommodated in the accommodation cavity; and a decorative member accommodated in the recess and disposed on the periphery of the decorative sheet, a sound output portion being provided on the decorative member, and the sound emitted by the loudspeaker module being transmitted by the sound output portion. By using the structure above, a structure that forms a flat or curved surface with the outer surface of the housing is formed on the outer surface of the decorative sheet and the decorative member. Moreover, in the present application, the sound output portion is provided on the decorative member, and it is difficult to discover the sound output portion from the appearance of an electronic device, so that the electronic device has a better appearance integration effect from the appearance. The present application also provides an electronic device comprising the loudspeaker assembly above.

Description

Speaker assembly and electronic device

【Technical Field】

This application relates to the technical field of electronic equipment, and in particular to a speaker assembly and an electronic device including the above speaker assembly.

【Background technique】

Electronic devices such as mobile phones and tablet computers are equipped with speakers. Correspondingly, the middle frame shell of the electronic device has multiple holes to produce sound, and the overall appearance of the middle frame shell is incomplete after the hole is broken. In addition, there is no integral effect with the middle frame housing, which affects the overall appearance of the electronic device product.

[Content of the invention]

The application provides a speaker assembly and an electronic device.

A technical solution adopted in the present application is to provide a speaker assembly, which includes: a housing, the housing is provided with a groove, and an accommodation cavity is opened at the bottom of the groove;

The decorative sheet is accommodated in the groove, so that the outer surface of the decorative sheet and part of the outer surface of the casing together form a plane or curved surface;

The speaker module is accommodated in the accommodation cavity; and

The decorative piece is accommodated in the groove and arranged on the periphery of the decorative sheet, and a sound emitting portion is arranged on the decorative piece, and the sound emitted by the speaker module is transmitted through the sound emitting portion.

The present application also provides an electronic device, including a glass cover, a back shell, and a speaker assembly; the glass cover is connected to the housing, and the back shell is disposed opposite to the glass cover and connected to the housing ；

Wherein, the speaker assembly includes:

A housing, a groove is provided in the housing, and an accommodation cavity is opened at the bottom of the groove;

A decorative sheet is accommodated in the groove, so that the outer surface of the decorative sheet and part of the outer surface of the casing together form a plane or curved surface;

The speaker module is accommodated in the accommodation cavity; and

A decorative piece is accommodated in the groove and arranged on the periphery of the decorative sheet, and a sound emitting portion is arranged on the decorative piece, and the sound emitted by the speaker module is transmitted through the sound emitting portion.

The present application further provides a speaker assembly, including:

The decorative piece is accommodated in the groove;

The speaker module is accommodated in the accommodation cavity; and

The speaker assembly provided in the present application includes a housing, a decorative sheet connected to the housing, a decorative piece surrounding the decorative sheet, and a speaker assembly accommodated in the housing. The shell is provided with a groove, and an accommodating cavity is opened at the bottom of the groove; the decorative sheet is accommodated in the groove, so that the outer surface of the decorative sheet and part of the outer surface of the shell together form a plane or curved surface. The sound output part is arranged, and the sound emitted by the speaker module in the housing is transmitted through the sound output part. With the above structure, the decorative sheet and the decorative piece form a flat or curved structure with the outer surface of the housing, and the sound emitting part is arranged on the decorative piece in this application, which is difficult to detect from the appearance of the electronic device The existence of the electronic device has a better appearance integration effect from the appearance.

【Explanation of drawings】

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

FIG. 1 is a schematic diagram of a partial structure of an embodiment of a speaker assembly of the present application;

FIG. 2 is a schematic structural diagram of an embodiment of an electronic device of the present application;

Fig. 3 is an enlarged schematic diagram of the structure of part a in Fig. 1;

4 is a schematic diagram of the structure of the speaker assembly in an embodiment of the present application;

FIG. 5 is a schematic view of the structure of the speaker assembly according to an embodiment of the present application;

6 is an enlarged schematic diagram of the cross-sectional structure of the circle a in FIG. 1 in another implementation of the present application;

FIG. 7 is a schematic structural diagram from a perspective of the speaker assembly of the present application in another embodiment;

FIG. 8 is a schematic structural diagram from a perspective of the speaker assembly of the present application in another embodiment;

FIG. 9 is a schematic structural diagram from a perspective of the speaker assembly of the present application in another embodiment;

FIG. 10 is an exploded schematic diagram of the structure of an angle part in an embodiment of the speaker assembly of the present application;

FIG. 11 is an exploded schematic diagram of the structure of another angle part of the speaker assembly in an embodiment of the present application;

FIG. 12 is an exploded schematic diagram of the structure of another angle part in an embodiment of the speaker assembly of the present application.

【Detailed ways】

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It can be understood that the specific embodiments described here are only used to explain the application, but not to limit the application. In addition, it should be noted that, for ease of description, the drawings only show a part of the structure related to the present application instead of all of the structure. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

Reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

The present application provides a speaker assembly 100 and an electronic device 200 including the speaker assembly 100. 1 and FIG. 2, wherein FIG. 1 is a schematic diagram of a part of the structure of an embodiment of the speaker assembly 100 of this application, and FIG. 2 is a schematic diagram of the structure of an embodiment of an electronic device 200 of this application. Specifically, the electronic device 200 may be any of various types of computer system devices that are mobile or portable and perform wireless communication (only one form is exemplarily shown in FIG. 2). Specifically, the electronic device 200 may be a mobile phone or a smart phone (for example, a phone based on iPhoneTM and AndroidTM), a portable game device (for example, Nintendo DSTM, PlayStation PortableTM, Gameboy AdvanceTM, iPhoneTM), a laptop Type computers, PDAs, portable Internet devices, music players, and data storage devices, other handheld devices, and headsets, etc. The electronic device 200 can also be used for other wearable devices that need to be charged (for example, electronic bracelets, electronic Necklaces, electronic devices or head-mounted devices (HMD) for smart watches).

The electronic device 200 may also be any one of multiple electronic devices, including but not limited to cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, and music recorders , Video recorders, other media recorders, radios, medical equipment, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable multimedia players Players (PMP), Moving Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) players, portable medical equipment, digital cameras and their combinations and other equipment.

In some cases, the electronic device 200 may perform multiple functions (for example, playing music, displaying videos, storing pictures, and receiving and sending phone calls). If necessary, the electronic device 200 may be a device such as a cell phone, a media player, other handheld devices, wrist watch devices, pendant devices, earpiece devices, or other compact portable devices.

The speaker assembly 100 provided in the present application includes a housing 10, a decorative sheet 20 connected to the housing 10, a speaker module 30 provided in the housing 10, and a decorative member 40 provided on the periphery of the decorative sheet 20, as shown in FIG. 3 , Figure 3 is an enlarged schematic diagram of the structure of the circle a in Figure 1.

Specifically, the housing 10 of the present application is a middle frame or a battery cover of the electronic device 200, or a middle frame and a battery cover are integrated. The outer contour of the housing 10 is a rectangular parallelepiped. Refer to FIG. 4, which is a schematic structural diagram of a speaker assembly in an embodiment of the present application. Specifically, a groove 12 is defined on the housing 10, and an accommodating cavity 14 is defined at the bottom of the groove 12, and the accommodating cavity 14 and the groove 12 communicate with each other. Specifically, the groove 12 is used to accommodate the decorative sheet 20 and the accommodation cavity 14 is used to accommodate the speaker assembly 30.

Further, the housing 10 includes two first side surfaces 16 parallel to each other and two second side surfaces 18 parallel to each other. As shown in FIG. 2, the first side surface 16 and the second side surface 18 are connected end to end. Further, the first side surface 16 and the second side surface 18 may be connected at right angles or in a circular arc transition connection, which is not specifically limited here. FIG. 2 shows a situation where the first side surface 16 and the second side surface 18 are connected in a circular arc.

It is understandable that the terms "first", "second" and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features . Therefore, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of the features.

The decorative sheet 20 is accommodated in the groove 12, so that the outer surface of the decorative sheet 20, part of the outer surface of the housing 10 and the decorative part together form a plane or curved surface, forming part of the outer surface of the electronic device 200, as shown in FIG. 3 , FIG. 3 is a side view of an electronic device in an embodiment of this application.

The decorative element 40 is accommodated in the groove 12 and is arranged on the periphery of the decorative sheet 20. On the one hand, it serves as a decorative ring of the decorative sheet 20, and on the other hand, the decorative element 40 is provided with a sound portion 42, as shown in FIG. 5 is a schematic structural diagram of a speaker assembly according to an embodiment of the present application. Optionally, the sound-out portion 42 includes a plurality of sound-out holes, or includes one or more sound-out grooves, which is not specifically limited herein. The sound emitted by the speaker module 30 in the housing 10 is transmitted to the outside of the electronic device 200 through the sound emitting portion 42. Optionally, the color of the shell 10 exposed by the sound portion 42 is consistent with the color of the decorative member 40, so that the sound portion 42 can be better visually hidden.

Optionally, in an embodiment, the length of the first side 16 is less than the length of the second side 18, and the decorative sheet 20 is located at the first side 14, that is, the decorative sheet 20 is set at the bottom or top of the electronic device 200 , There is no specific limitation here. Understandably, if the decorative sheet 20 is disposed on the top of the electronic device 200, the sound emitting portion 42 is located on the top of the electronic device 200, which conforms to the user's usage habits, and the sound emitting portion 42 is located close to the user's ears, which facilitates sound transmission. In other embodiments, the decorative sheet 20 may also be arranged on the second side surface 18, that is, on the left and right sides of the electronic device 200, or one of the left and right sides.

Optionally, in an embodiment, the decorative sheet 20 is a long strip, and the length of the decorative sheet 20 exceeds two-thirds of the width of the side surface of the housing 10 in which the decorative sheet 20 is provided. In this embodiment, the decorative sheet 20 is made very long and has no outwardly protruding shape. In the eyes of the user, the decorative sheet 20 is more like a decorative component and is formed with the decorative member 40 and the outer surface of the housing 10 One body, thereby making the speaker assembly 100 more beautiful.

Optionally, in an embodiment, the width of the decorative sheet 20 is also made relatively large, for example, the width of the decorative sheet 20 exceeds two-thirds of the thickness of the casing 10. With the above structure, the area of the decorative sheet 20 is close to the area of the first side 16 of the housing 10, so that the user sees the decorative sheet 20 as a decorative component from the appearance of the electronic device 200.

Optionally, in an embodiment, the decorative sheet 20 includes a base portion 22 and an arc-shaped portion 24 extending away from the hard conductive base 30 from the base portion 22, as shown in FIG. 6, which is another embodiment of the application. An enlarged schematic view of the cross-sectional structure of the circle a in FIG. 1, the base portion 22 is attached to the front surface of the first side 16 or the second side 18, and the arc portion 24 is attached to the junction of the first side 16 and the second side 18. Optionally, the arc-shaped portion 24 includes one or two. With the above structure, the decorative sheet 20 covers at least most of the area of the first side 16 of the housing 10, so that the effect of integrating the decorative sheet 20 and the housing 10 is better.

Optionally, in yet another embodiment, the decorative member 40 is connected to at least one of the two second side surfaces 18. FIG. 7 shows the embodiment, and FIG. 7 is a schematic structural diagram of the speaker assembly according to another embodiment of the present application from a perspective. The decoration 40 is connected to one of the two second side surfaces 18. Fig. 8 shows an embodiment. Fig. 8 is a schematic structural view of a speaker assembly in another embodiment of the present application. The length of the decorative sheet 20 is equivalent to the length of the first side 16, and the decorative member 40 is The second side 18 is connected.

Optionally, in an embodiment, the decorative piece 40 surrounds the decorative sheet 20 for a week to form a closed loop. In other embodiments, the decorative member 40 may also be a non-closed ring. For example, one or two straight strips.

Understandably, in the embodiment where the decorative piece 20 has the arc-shaped portion 24, the decorative piece 40 may surround the decorative piece 20 in a circle, or the decorative piece 40 may only surround a part of the decorative piece 20, for example, the decorative piece 40 is a straight line. Article, no specific limitation is made here.

Specifically, the electronic device 200 includes a glass cover 210 connected to the housing 10, and a rear housing 220 opposite to the glass cover 210 and connected to the housing 10, as shown in FIG. 9, which is an electronic device of this application. Side view in one embodiment. The decoration 40 includes a first straight portion 44 close to the glass cover 210, a second straight portion 46 parallel to the first straight portion 44, and a curved portion connecting the first straight portion 44 and the second straight portion 46 The part 48 and the sound emitting part 42 are located on the first straight part 44. With the above structure, the sound output portion 42 is closer to the front of the electronic device 200, so that when the user normally uses the electronic device 200, the sound propagation path is shorter. In other embodiments, the sound emitting portion 42 may also be located at the second straight portion 46 or the curved portion 48, which is not specifically limited here.

It is understandable that the sound emitting portion 42 is provided on the first straight portion 44 or the second straight portion 46, and the sound emitted by the speaker module 30 does not directly directly face the sound emitting portion 42, in order to enable the speaker module The sound transmission effect of the group 30 is better. The speaker assembly 100 is also provided with a sound guide structure 50. As shown in FIG. 3, the sound produced by the speaker module 30 is guided to the sound emitting portion 42 through the sound guide structure 50. Optionally, in an embodiment, the sound guide structure 50 is an independent component, one end of the sound guide structure 50 is connected to the sound output portion 42, and the other end is connected to the speaker module 30. Or the sound guide structure 50 is a part of the speaker module 30 and is directly formed by extending the components of the speaker module 30.

Optionally, in an embodiment, the speaker assembly 100 further includes a bracket 60, as shown in FIGS. 10-12. FIG. 10 is an exploded schematic diagram of an angle part of the speaker assembly according to an embodiment of the present application. FIG. 11 This is an exploded schematic diagram of another angle part structure in an embodiment of the speaker assembly of the present application. FIG. 12 is an exploded schematic view of another angle part structure in an embodiment of the speaker assembly of the present application. Correspondingly, the loudspeaker module 30 includes a sound outlet housing 32, the sound outlet housing 32 is provided with a sound cavity 322, and the sound outlet housing 32 and the bracket 60 jointly constitute a sound guide structure 50. Further, the bracket 60 is respectively connected to the decorative member 40 and the sound output housing 32, and the bracket 60 is provided with a sound guide cavity 62. The sound guide cavity 62, the sound outlet cavity 322 and the sound portion 42 are connected to each other, so that the speaker module 30 generates The sound passes through the sound output cavity 322 and the sound guide cavity 62 in sequence, and finally reaches the sound output portion 42 and is transmitted outside the electronic device 200. The structure of the sound output cavity 322 and the sound guide cavity 62 can guide sound propagation.

The speaker module 30 includes a speaker 34. The speaker 34 is a component that emits sound. It is understandable that the sound emitting part 42 is arranged on the decorative member 40, and the speaker 34 is not arranged directly opposite to the sound emitting part 42. The speaker 34 and the decorative member 40 The sound output part 42 is arranged in different layers. Specifically, the speaker 34 is on the first horizontal line, and the sound output portion 42 is on the second horizontal line. The sound guide cavity 62 in the bracket 60 has a slope sound guide structure to guide the sound emitted by the speaker 34 from the first horizontal line to the second horizontal line. Finally, it is transmitted by the sound output unit 42. Further, specifically, in an embodiment, the components surrounding the sound guide cavity 62 in the bracket 60 include a bottom 64, two side portions 66 connected to the bottom 64, and opposite to the bottom 64 and connected to the two side portions 66 The top 68 and the bottom 64 are slopes, or step slopes, which incline from the butt of the sound cavity 322 toward the sound outlet 42 to form a slope sound guide structure. The above structure can ensure the intensity of the sound transmitted by the speaker 34.

Furthermore, the components surrounding the sound cavity 32 in the speaker assembly 100 include a bottom wall 31, two side walls 33 connected to the bottom wall 31, and a top wall opposite to the bottom wall 31 and connected to the two side walls 33 35. The top wall 35 is a slope, or a step slope, which slopes from the first horizontal line to the sound cavity 62. That is, the sound outlet cavity 322 also forms a slope sound guide structure and forms a butt connection with the sound guide cavity 62. In other embodiments, the sound output direction of the sound output cavity 322 may also be parallel to the first horizontal line, as long as it is connected to the sound guide cavity 62, which is not specifically limited here.

The present application adopts the above structure. The decorative sheet 20 and the decorative member 40 form a flat or curved structure with the outer surface of the housing 10 on the exterior, and the present application arranges the sound emitting portion 42 on the decorative member 40, from the electronic device It is difficult to detect the presence of the sound part 42 in appearance, so that the electronic device 200 has a better appearance integration effect from the appearance, and the appearance expressiveness of the electronic device 200 is improved.

The above are only implementations of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made by using the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Claims

A speaker assembly, characterized in that it comprises:

A housing, a groove is provided in the housing, and an accommodation cavity is opened at the bottom of the groove;

A decorative sheet is accommodated in the groove, so that the outer surface of the decorative sheet and part of the outer surface of the casing together form a plane or curved surface;

The speaker module is accommodated in the accommodation cavity; and

A decorative piece is accommodated in the groove and arranged on the periphery of the decorative sheet, and a sound emitting portion is arranged on the decorative piece, and the sound emitted by the speaker module is transmitted through the sound emitting portion.
The speaker assembly according to claim 1, wherein the speaker assembly further comprises a sound guide structure, one end of the sound guide structure is connected to the sound output part, and the other end is connected to the speaker module, or the sound guide structure It is a part of the speaker module.
The speaker assembly according to claim 2, characterized in that it comprises a bracket, and the speaker module comprises a sound outlet housing, the sound outlet housing is provided with a sound cavity, the sound outlet housing and the bracket Together to form a sound guide structure, the brackets are respectively connected to the decorative part and the sound output housing, the brackets are provided with a sound guide cavity, and the sound guide cavity, the sound outlet cavity and the sound outlet part are mutually connected. Run through.
The speaker assembly according to claim 3, wherein the speaker module comprises a speaker, the speaker and the sound emitting part of the decorative part are arranged in different layers, the speaker is on the first horizontal line, and the sound The part is on the second horizontal line, and the sound guide cavity in the bracket is a slope sound guide structure to guide the sound emitted by the speaker from the first horizontal line to the second horizontal line.
The loudspeaker assembly according to claim 4, characterized in that, the component that surrounds the sound guide cavity in the bracket includes a bottom, two side portions connected to the bottom, and two sides opposite to the bottom. The top part connected with the side parts, the bottom part is a slope, or a step slope, which slopes from the butt-connected part of the sound output cavity to the direction of the sound output part.
The loudspeaker assembly according to claim 5, characterized in that, the part that surrounds and forms the sound outlet cavity in the loudspeaker assembly includes a bottom wall, two side walls connected to the bottom wall, and The walls are opposite to the top wall connected to the two side walls, and the top wall is a slope, or a step slope, which slopes from the first horizontal line to the sound conducting cavity.
The speaker assembly according to claim 1, wherein the decorative sheet has a long strip shape, and the length of the decorative sheet exceeds one-third of the width of the side of the housing provided with the decorative sheet in the longitudinal direction two.
The speaker assembly of claim 1, wherein the width of the decorative sheet exceeds two-thirds of the thickness of the housing.
The speaker assembly according to claim 1, wherein the color of the shell exposed from the sound emitting portion is the same as the color of the decorative part.
The speaker assembly of claim 1, wherein the decorative sheet is a long strip, and the decorative piece surrounds the decorative sheet for a whole circle.
The speaker assembly of claim 1, wherein the housing includes two first side surfaces that are parallel to each other, and two second side surfaces that are parallel to each other, the first side surface and the second side surface end and end. Connected, the length of the first side surface is less than the length of the second side surface, and the decorative sheet is located on the first side surface.
The speaker assembly according to claim 11, wherein the decorative member is connected to at least one of the two second side surfaces.
The speaker assembly according to claim 11, wherein the decorative sheet comprises a base portion and an arc-shaped portion extending away from the hard conductive base from the base portion, and the arc-shaped portion is attached to the The first side surface is connected with the second side surface.
An electronic device, characterized in that it comprises a glass cover, a back shell and a speaker assembly; the glass cover is connected to the housing, and the back shell is arranged opposite to the glass cover and connected to the housing ；

Wherein, the speaker assembly includes:

A housing, a groove is provided in the housing, and an accommodation cavity is opened at the bottom of the groove;

A decorative sheet is accommodated in the groove, so that the outer surface of the decorative sheet and part of the outer surface of the casing together form a plane or curved surface;

The speaker module is accommodated in the accommodation cavity; and

A decorative piece is accommodated in the groove and arranged on the periphery of the decorative sheet, and a sound emitting portion is arranged on the decorative piece, and the sound emitted by the speaker module is transmitted through the sound emitting portion.
The electronic device according to claim 14, wherein the decorative element comprises a first straight portion close to the glass cover, a second straight portion parallel to the first straight portion, and a connection The first straight portion and the curved portion of the second straight portion, the sound emitting portion is located on the first straight portion.
The electronic device according to claim 14, wherein the speaker assembly further comprises a sound guide structure, one end of the sound guide structure is connected to the sound output part, and the other end is connected to the speaker module, or the sound guide structure It is a part of the speaker module.
The electronic device according to claim 14, wherein the speaker assembly further comprises a bracket, and the speaker module comprises a sound output housing, the sound output housing is provided with a sound cavity, and the sound output shell The body and the bracket jointly constitute a sound guide structure, the bracket is respectively connected with the decorative part and the sound output housing, the bracket is provided with a sound guide cavity, the sound guide cavity is connected to the sound outlet cavity and the sound outlet housing. The utterances are connected to each other.
The electronic device according to claim 17, wherein the speaker module comprises a speaker, and the speaker and the sound emitting part of the decorative part are arranged in different layers, and the speaker is on a first horizontal line, and the sound The part is on the second horizontal line, and the sound guide cavity in the bracket is a slope sound guide structure to guide the sound emitted by the speaker from the first horizontal line to the second horizontal line.
The electronic device according to claim 18, wherein the components surrounding the sound guide cavity in the bracket include a bottom, two side portions connected to the bottom, and two sides opposite to the bottom. The top part connected with the side parts, the bottom part is a slope, or a step slope, which is inclined from the docking position of the sound output cavity to the direction of the sound output part; the speaker assembly is surrounded by the sound output cavity The components include a bottom wall, two side walls connected to the bottom wall, and a top wall opposite to the bottom wall and connected to the two side walls, the top wall is a slope, or a step slope, from The first horizontal line is inclined toward the sound guide cavity.
A speaker assembly, characterized in that it comprises:

A housing, a groove is provided in the housing, and an accommodation cavity is opened at the bottom of the groove;

The decorative piece is accommodated in the groove;

The speaker module is accommodated in the accommodation cavity; and

A decorative piece is accommodated in the groove and arranged on the periphery of the decorative sheet, and a sound emitting portion is arranged on the decorative piece, and the sound emitted by the speaker module is transmitted through the sound emitting portion.