CN115550489B

CN115550489B - Terminal Equipment

Info

Publication number: CN115550489B
Application number: CN202110777767.5A
Authority: CN
Inventors: 李威; 张柱
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-06-29
Filing date: 2021-07-09
Publication date: 2024-04-09
Anticipated expiration: 2041-07-09
Also published as: CN115550489A

Abstract

The application provides a terminal device. The terminal device includes a center, an earpiece assembly, and a seal assembly. The middle frame comprises a first surface and a second surface which are oppositely arranged. The middle frame is provided with a sound outlet. The first surface of the middle frame is provided with a first groove. The first groove is communicated with the sound outlet. The bottom wall of the first groove is provided with a first through hole. The earphone assembly is arranged on the second surface of the middle frame. The earphone assembly is connected with the middle frame in a sealing way and corresponds to the first through hole. The sealing assembly is capable of sealing the first groove. The first recess and the first through hole of the center form a front acoustic cavity of the earpiece assembly. The middle frame is in sealing connection with the earphone assembly, and the sealing assembly seals the first groove, so that a front sound cavity of the earphone assembly is sealed, and a sound outlet hole in the middle frame is the only sound emission channel of the earphone assembly. The structural sealing assembly for sealing the front acoustic cavity is low in cost and the first groove and the first through hole are manufactured on the middle frame.

Description

Terminal equipment

Technical Field

The embodiment of the application relates to the technical field of terminals, in particular to terminal equipment.

Background

The extreme screen ratio in the terminal equipment becomes a development direction, and many terminal equipment in the industry, such as mobile phones, adopts to punch at the top of the middle frame to form the sound outlet hole of the earphone, changes the position of the sound outlet hole of the earphone from the front of the screen to the top of the terminal equipment, reduces the black edge of the screen, and obtains a larger screen ratio. The terminal equipment needs the preceding sound cavity of sealed earphone, guarantee that the sound hole is the passageway that the unique sound of earphone was passed through, in the present scheme, the earphone passes through sealing member sealing connection on a support, the support passes through another sealing member sealing connection on the center, set up the through-hole that corresponds with the earphone on the support, one side that the support deviates from the earphone is provided with the recess, the recess communicates with through-hole and sound hole respectively, the preceding sound cavity of sealed earphone has been formed, the earphone is installed on the center with the help of the support to set up recess and the through-hole that forms preceding sound cavity structure on the support, the cost of manufacture and installation of support is high.

Disclosure of Invention

In view of this, the present application provides a low cost terminal device that forms the structure of the front acoustic chamber of the earpiece.

The application provides a terminal device. The terminal device includes a center, an earpiece assembly, and a seal assembly. The middle frame includes a first face and a second face. The first face and the second face are disposed opposite each other. The middle frame is provided with a sound outlet. The first surface of the middle frame is provided with a first groove. The first groove is communicated with the sound outlet. The bottom wall of the first groove is provided with a first through hole. The earphone assembly is arranged on the second surface of the middle frame. The earphone assembly is connected with the middle frame in a sealing way and corresponds to the first through hole. The sealing assembly is capable of sealing the first groove.

In the above design, the first groove and the first through hole of the middle frame form a front acoustic cavity of the earpiece assembly. The middle frame is in sealing connection with the earphone assembly, and the sealing assembly seals the first groove, so that a front sound cavity of the earphone assembly is sealed, and a sound outlet hole in the middle frame is the only sound emission channel of the earphone assembly. The structural sealing assembly for sealing the front acoustic cavity is low in cost and the first groove and the first through hole are manufactured on the middle frame.

In one possible design, the earpiece assembly includes an earpiece and a first seal. The first sealing member is provided with a second through hole, and the second through hole is communicated with the first through hole. The second surface is provided with a second groove, and the receiver is arranged in the second groove and is in sealing connection with the bottom wall of the second groove through the first sealing piece.

In the above design, the second groove provides a mounting space for the earpiece assembly, and the second through hole enables the earpiece assembly to be communicated with the first groove and the sound outlet.

In one possible design, the seal assembly includes a cover plate and a second seal. The cover plate is arranged in the first groove. The second seal member is bonded to the center. The second sealing piece covers the gap between the cover plate and the middle frame.

In the above design, the cover plate is disposed in the first groove, and a cavity is formed between the cover plate and the bottom wall of the first groove, and the cavity and the first through hole form a front acoustic cavity of the earphone assembly. The second sealing piece covers the gap between the cover plate and the middle frame, so that the front sound cavity is sealed.

In one possible design, a protruding mounting portion is provided in the first recess. The seal assembly also includes a third seal. The third sealing member is disposed on the mounting portion. The cover plate is arranged on one side of the third sealing piece, which is away from the mounting part.

In the design, the third sealing piece enables the cover plate to be fixed in the first groove, and the cover plate and the middle frame are preliminarily sealed.

In one possible design, the middle frame further includes side frames. The side frame surrounds the outsides of the first surface and the second surface and is respectively connected with the first surface and the second surface. The sound outlet holes are arranged on the side frames. The first groove comprises a first groove part and a second groove part which are connected. The first through hole communicates with the first groove portion. The second groove part is positioned at the junction of the first surface and the side frame and is communicated with the sound outlet.

In the above design, the first groove part is communicated with the first through hole, and the second groove part is communicated with the sound outlet hole, so that the sound emitted by the receiver component is transmitted out through the sound outlet hole. The second groove part provides a demolding space for the sound outlet, and does not occupy the installation space on the second surface.

In one possible design, the first face is connected to the side frame with a rounded transition face. The cover plate comprises a matching part of an arc-shaped structure. The matching part is arranged on the second groove part, so that the surfaces of the matching part and the middle frame are overlapped at the junction of the side frame and the first surface.

In the above-mentioned design, the cooperation portion of arc structure has adapted the mode that the fillet transitional surface that first face was used for the side frame is connected, cooperation portion and center coincide in the juncture of side frame and first face, makes the clearance between second sealing member easily cover apron and the center.

In one possible design, the cover plate includes a main body and a mating portion, the main body is disposed in the first groove portion, and the mating portion is disposed in the second groove portion, so that the bottom wall of the first groove is located on the same side of the cover plate as the sound outlet hole.

In the design, the first groove and the sound outlet are positioned on the same side of the cover plate, the main body and the matching part enable the first groove to be communicated with the sound outlet, a front sound cavity of the earphone assembly is formed between the cover plate and the bottom wall of the first groove, and the front sound cavity of the earphone assembly is preliminarily sealed.

In one possible design, the mating portion is provided with an arcuate slot. The arc-shaped groove is in butt joint with the sound outlet.

In the above-mentioned design, the arc groove has guaranteed that the cooperation portion can not block up the play sound hole, guarantees out sound quality.

In one possible design, the mating portion is provided with a protruding support portion on a side of the bottom wall facing the first recess. The support portion is in contact with the groove wall of the second groove portion.

In the design, the supporting part is contacted with the groove wall of the second groove part, so that the strength of the matching part is improved, the matching part is not easy to deform due to collision, and the sound outlet is not easy to block.

In one possible design, a third recess is provided in the bottom wall of the first recess.

In the design, the third groove increases the space size of the front sound cavity of the receiver assembly, and ensures the sound output quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required for the embodiments will be briefly described below.

Fig. 1 is a schematic diagram of a terminal device provided in an embodiment of the present application with a second seal omitted;

FIG. 2 is a partially schematic, exploded view of the structure of the terminal device of FIG. 1;

FIG. 3 is a partially schematic illustration of an exploded view of the terminal device of FIG. 1 from another perspective;

fig. 4 is a partial schematic view of the terminal device shown in fig. 1 along the direction a;

FIG. 5 is a schematic view in partial cross-section of the terminal device shown in FIG. 1;

FIG. 6 is a schematic diagram of a middle frame in the terminal device shown in FIG. 1;

fig. 7 is a schematic view of a cover plate in the terminal device shown in fig. 1.

Description of the main reference signs

Terminal device 100

Middle frame 10

First face 101

Second face 103

Side frame 105

Rounded transition surface 107

Sound outlet 11

First groove 12

First groove 1201

Second groove 1203

Bottom wall 121

Mounting portion 125

Third groove 127

First through hole 14

Second groove 15

Bottom wall 151

Earpiece assembly 20

Earphone 21

First seal 23

Second through hole 231

Seal assembly 30

Cover plate 33

Main body 331

Mating portion 333

Arc-shaped groove 3331

Support portion 3333

Second seal 35

Third seal 37

The following detailed description will further illustrate the application in conjunction with the above-described figures.

Detailed Description

In order to further illustrate the technical means and effects adopted by the present application to achieve the intended application purpose, the following description is taken in conjunction with the accompanying drawings and embodiments, and it is apparent that the described embodiments are only some, but not all, embodiments of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The embodiment of the application provides a terminal device. The terminal device includes a center, an earpiece assembly, and a seal assembly. The middle frame includes opposite first and second sides. The middle frame is provided with a sound outlet. The first surface of the middle frame is provided with a first groove. The first groove is communicated with the sound outlet. The bottom wall of the first groove is provided with a first through hole. The earphone assembly is arranged on the second surface of the middle frame. The earphone assembly is connected with the middle frame in a sealing way and corresponds to the first through hole. The sealing assembly is capable of sealing the first groove.

In the terminal equipment, the first groove and the first through hole of the middle frame form a front sound cavity of the earphone assembly. The middle frame is in sealing connection with the earphone assembly, and the sealing assembly seals the first groove, so that a front sound cavity of the earphone assembly is sealed, and a sound outlet hole in the middle frame is the only sound emission channel of the earphone assembly. The structural sealing assembly for sealing the front acoustic cavity is low in cost and the first groove and the first through hole are manufactured on the middle frame.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present application proposes a terminal device 100. The terminal device 100 is a mobile phone, but is not limited thereto. The terminal device 100 includes a center 10, an earpiece assembly 20, and a seal assembly 30. The earpiece assembly 20 and the seal assembly 30 are disposed on opposite sides of the center frame 10, respectively. The middle frame 10 includes a first side 101 and a second side 103. The first face 101 and the second face 103 are disposed opposite. The middle frame 10 is provided with a sound outlet 11 as shown in fig. 4. The earpiece assembly 20 is disposed on the second face 103 of the center 10 and is sealingly connected to the center 10. The first face 101 of the middle frame 10 is provided with a first recess 12. The seal assembly 30 is capable of sealing the first groove 12. The first groove 12 is communicated with the sound outlet 11, the bottom wall 121 of the first groove 12 is provided with a first through hole 14, and the first through hole 14 corresponds to the receiver component 20.

The first recess 12 and the first through hole 14 of the center frame 10 form a front acoustic cavity of the earpiece assembly 20. The middle frame 10 is in sealing connection with the earphone assembly 20, the sealing assembly 30 seals the first groove 12, the front sound cavity of the earphone assembly 20 is sealed, and the sound outlet 11 on the middle frame 10 is the only sound emitting channel of the earphone assembly 20. The structural seal assembly 30 for sealing the front acoustic chamber is low in cost and the first recess 12 and the first through hole 14 forming the front acoustic chamber are made in the center frame 10.

The first surface 101 and the second surface 103 may be flat, curved, or stepped surfaces, or may be surfaces formed by combining the above different surfaces. The first side 101 of the center 10 is used for mounting the seal assembly 30 and also for mounting a screen (not shown) of the terminal device 100. The second face 103 is used for mounting the earpiece assembly 20 and also for mounting other structural components of the terminal device 100, such as a camera, a circuit board (not shown), etc. The earpiece assembly 20 is electrically connected to the circuit board.

In the existing terminal equipment, the bracket is arranged on the second face 103 of the middle frame 10, and the bracket is provided with a groove structure for forming the front acoustic cavity of the earphone, so that the stable transmission of sound can be ensured as the space size of the front acoustic cavity of the earphone is required to reach a set value by acoustics. The space of the front acoustic cavity reaching the set value needs to be provided on the bracket, so that the size of the bracket is increased, and the space for demolding of the sound outlet is also required to be provided on the side of the bracket facing the middle frame 10, so that the size of the bracket is further increased, the bracket occupies a larger installation space on the middle frame 10, and the installation layout of the structural member of the terminal equipment on the second face 103 of the middle frame 10 is possibly difficult.

In the terminal device 100 provided in the present application, the earpiece assembly 20 and the seal assembly 30 are disposed on opposite sides of the middle frame 10, and the earpiece assembly 20 occupies a small space on the second face 103 of the middle frame 10. The first surface 101 is provided with the first groove 12, the sealing component 30 is arranged in the first groove 12, and when the whole sealing component 30 is positioned in the first groove 12, the sealing component 30 does not occupy the space on the first surface 101; when a portion of the seal assembly 30 is positioned within the first recess 12, the seal assembly 30 occupies little space on the first face 101.

The first groove 12 arranged on the first surface 101 is communicated with the sound outlet 11, so that a mold stripping space is provided for the sound outlet 11, the installation space on the second surface 103 of the middle frame 10 is not occupied, the installation space of the middle frame 10 is improved, more stacking requirements can be met on the middle frame 10, and for example, the stacking installation requirements of a camera assembly can be met.

Referring to fig. 2 and 5, a second groove 15 is disposed on the second surface 103 of the middle frame 10. The earpiece assembly 20 is disposed in the second recess 15. The second groove 15 and the first groove 12 communicate through the first through hole 14. The earpiece assembly 20 includes an earpiece 21 and a first seal 23. The first seal 23 is provided with a second through hole 231. The first seal 23 is glued to the bottom wall 151 of the second recess 15. The earpiece 21 is arranged on the first seal 23. The earpiece 21 is sealingly connected to the center 10 by a first seal 23 and communicates with the first through hole 14 by a second through hole 231. The sound emitted from the receiver 21 is transmitted from the sound outlet 11 through the second through hole 231, the second groove 15, the first through hole 14, and the first groove 12.

Referring to fig. 1 and 5, the middle frame 10 is provided with side frames 105. The side frame 105 is an annular wall structure surrounding the outside of the first face 101 and the second face 103. The side frame 105 connects the first face 101 and the second face 103. The sound outlet 11 is provided on the side frame 105. The sound outlet 11 penetrates the side frame 105 and is communicated with the first groove 12. The sound outlet hole 11 extends obliquely from the second face 103 of the center 10 to the first face 101 of the center 10 with respect to the side frame 105 such that the opening of the sound outlet hole 11 through the side frame 105 is closer to the side of the center 10 where the first face 101 is located than to the side of the center 10 where the second face 103 is located.

In one possible embodiment, the sound outlet holes 11 are circular holes, and the number of sound outlet holes 11 is plural. The plurality of sound outlet holes 11 are arranged at intervals on the side frame 105 as shown in fig. 4.

It should be understood that in other embodiments, the number of the sound outlets 11 may be one, and the sound outlets 11 may be a rectangular long hole. The number and shape of the sound outlet holes 11 may be set as required, as long as the sound outlet holes 11 are communicated with the first groove 12, so as to realize the function of transmitting the sound emitted from the earpiece 21.

Referring to fig. 3 and 5, the seal assembly 30 includes a cover plate 33 and a second seal 35. The cover plate 33 is disposed in the first recess 12. Specifically, the bottom wall 121 of the first recess 12 is provided with a mounting portion 125 protruding therefrom. The mounting portion 125 is located in the first recess 12 and does not protrude from the first face 101. The cover plate 33 is provided on the mounting portion 125. The second seal 35 is disposed on a side of the cover 33 facing away from the mounting portion 125 and is bonded to the middle frame 10. The second seal 35 covers the gap between the cover plate 33 and the middle frame 10 (specifically, the side wall of the first groove 12), so that the seal assembly 30 is in sealing connection with the middle frame 10.

The cover plate 33 is disposed on the mounting portion 125, so that a cavity is formed between the cover plate 33 and the bottom wall 121 of the first recess 12, and the cavity is respectively communicated with the first through hole 14 and the sound outlet 11, so as to form a front sound cavity of the earpiece 21.

Referring to fig. 6, the first groove 12 includes a first groove portion 1201 and a second groove portion 1203 that communicate. The first groove 1201 is formed in the first surface 101. The mounting portion 125 is disposed in the first groove portion 1201. The first through hole 14 is connected to the first groove 1201. The second groove 1203 is located on a side of the first groove 1201 facing the side frame 105 and at a boundary between the first surface 101 and the side frame 105, so that the second groove 1203 communicates with the plurality of sound output holes 11. To accommodate the arrangement of the plurality of sound outlet holes 11 on the side frame 105, a portion of the second groove portion 1203 communicates with the first groove portion 1201 and extends to one side of the first groove portion 1201, so that the first groove 12 is substantially L-shaped.

Referring to fig. 7, the cover 33 includes a main body 331 and a mating portion 333. The main body 331 is provided on the mounting portion 125. The engaging portion 333 is provided on one side of the main body 331.

Referring to fig. 5, the main body 331 is disposed in the first groove 1201, the mating portion 333 is disposed in the second groove 1203, and the bottom wall 121 of the first recess 12 and the sound outlet 11 are located on the same side of the cover 33.

The second seal 35 is bonded to the first face 101 of the intermediate frame 10 and to the side frames 105 of the intermediate frame 10. The second seal 35 covers the gap between the cover 33 and the first face 101 and the gap between the cover 33 and the side frame 105, and seals the seal assembly 30 to the middle frame 10.

The second groove 1203 extends along the arrangement direction of the plurality of sound emitting holes 11 at the junction of the first surface 101 and the side frame 105, so that the space occupied by the first groove 12 on the first surface 101 is reduced, and the influence of the first groove 12 on the structural design layout on the first surface 101 of the center frame 10 is reduced.

The side of the cover plate 33 facing away from the first groove 12 is flush with the first surface 101, so that the second sealing element 35 smoothly covers a gap between the cover plate 33 and the middle frame 10, the second sealing element 35 can be bonded with the cover plate 33, the bonding area of the second sealing element 35 is increased, and the second sealing element 35 is used for stably sealing the front sound cavity of the receiver 21.

It will be appreciated that in other embodiments, the side of the cover plate 33 facing away from the first recess 12 may be lower or higher than the first face 101, and the portion of the second seal 35 corresponding to the cover plate 33 may be contoured to the cover plate 33, so that the second seal 35 can cover the gap between the cover plate 33 and the middle frame 10.

The second seal 35 is adhered to the cover plate 33, increasing the adhesion area of the second seal 35, and allowing the second seal 35 to stably cover the gap between the cover plate 33 and the center 10. It will be appreciated that in other embodiments, the second sealing member 35 may be disconnected from the cover plate 33, so long as the second sealing member 35 is bonded to the middle frame 10 to stably cover the gap between the cover plate 33 and the middle frame 10, so as to ensure that the sealing assembly 30 and the middle frame 10 are connected together in a sealing manner.

A first through hole 14 is provided in the first groove portion 1201 of the first groove 12, providing an acoustic path for the earpiece assembly 20. The second groove 1203 communicates with the plurality of sound outlet holes 11, providing space for the mold of the sound outlet holes 11.

In one possible embodiment, the second seal 35 is of a mylar construction, but is not limited thereto. For example, in other embodiments, the second seal 35 may be a sealing structure such as foam.

In one possible embodiment, the first face 101 is connected to the side frame 105 by a rounded transition 107, as shown in fig. 6. The mating portion 333 has an arc structure, so that a side of the mating portion 333 facing away from the first groove 12 coincides with a surface of the middle frame 10 at a junction between the side frame 105 and the first surface 101, as shown in fig. 7. Specifically, when the mating portion 333 is disposed in the second groove portion 1203, a side of the mating portion 333 facing the second seal member 35 is coplanar with the rounded transition surface 107, so that the second seal member 35 is bonded to the cover plate 33 and the middle frame 10.

It will be appreciated that in another possible embodiment, the second seal 35 may not be bonded to the first face 101. For example, another groove (not shown) is provided on the middle frame 10, and the other groove is used for accommodating the second sealing member 35, so that the second sealing member 35 is adhered to the first face 101, the rounded transition face 107 and the side frame 105, and the second sealing member 35 does not protrude from the first face 101, thereby reducing the space occupied by the sealing assembly 30 on the first face 101.

Referring to fig. 5, the seal assembly 30 further includes a third seal 37. The third seal 37 is adhered to the mounting portion 125. The cover plate 33 is disposed on the third seal 37. The third seal 37 sealingly connects the cover plate 33 with the mounting portion 125. The third seal 37 is of generally U-shaped glue construction. The third seal 37 connects the cover plate 33 within the first groove 12 and provides a primary seal between the cover plate 33 and the middle frame 10. In other embodiments, the third seal 37 may be omitted. The cover plate 33 is glued and directly adhered to the mounting portion 125.

In one possible embodiment, the first and third seals 23 and 37 are foam structures, but are not limited thereto. It will be appreciated that in another embodiment, the first seal 23 and/or the third seal 37 may be other structures with double sided tape. Alternatively, in another embodiment, the earpiece 21 and the cover 33 may be fixed to the middle frame 10 in a non-adhesive manner, for example, the earpiece 21 and the cover 33 are locked to the middle frame 10 by using fasteners, and a gasket for sealing is provided between the earpiece 21 and the middle frame 10 to enable the earpiece 21 to be connected with the middle frame 10 in a sealing manner. The cover plate 33 is sealingly connected to the middle frame 10 by a second seal 35.

The engaging portion 333 can avoid the sound outlet 11, and the sound outlet 11 communicates with the first groove 12. In one possible embodiment, the mating portion 333 bypasses a portion of the sound hole 11. In order to make the mating portion 333 stably avoid the whole of the sound outlet 11, an arc-shaped groove 3331 is formed on one side of the mating portion 333 facing the first groove 12, and the arc-shaped groove 3331 is in butt joint with the sound outlet 11.

It will be appreciated that in other embodiments, the mating portion 333 of the arc structure may also avoid the entire sound outlet 11. For example, the thickness of the engaging portion 333 is smaller than the thickness of the main body 331, and the engaging portion 333 is thinned, so that the contact area between the engaging portion 333 and the groove wall of the second groove 1203 is reduced, and the engaging portion 333 does not block the sound outlet 11.

Referring to fig. 5 and fig. 7, the engaging portion 333 is further provided with a supporting portion 3333 at intervals. The support portion 3333 is offset from the sound outlet 11. The supporting portion 3333 contacts with the middle frame 10, specifically, the supporting portion 3333 contacts with the groove wall of the second groove portion 1203, so that the strength of the matching portion 333 is improved, the arc-shaped matching portion 333 is not easy to deform when being bumped, and the problem that the matching portion 333 deforms to block the sound outlet 11 is avoided.

Referring to fig. 5 and 6, to increase the size of the front acoustic cavity of the earpiece 21, a third recess 127 is further formed in the bottom wall 121 of the first recess 12. In one possible embodiment, the third groove 127 is located within the first groove 1201 and meets the second groove 1203. It will be appreciated that in other possible embodiments, the third recess 127 may be open at other locations on the bottom wall 121 of the first recess 12.

In the above-described terminal device 100, the first recess 12 and the first through hole 14 of the center 10 form a front acoustic chamber of the earpiece assembly 20. The middle frame 10 is in sealing connection with the earphone assembly 20, the sealing assembly 30 seals the first groove 12, the front sound cavity of the earphone assembly 20 is sealed, and the sound outlet 11 on the middle frame 10 is the only sound emitting channel of the earphone assembly 20. The structural seal assembly 30 for sealing the front acoustic cavity is low cost and the first recess 12 and the first through hole 14 are manufactured in the center 10.

The above embodiments are only for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or equivalently replaced without departing from the spirit and essence of the technical solution of the present application.

Claims

1. A terminal device, comprising:

the middle frame comprises a first surface and a second surface, the first surface and the second surface are oppositely arranged, a sound outlet hole is formed in the middle frame, and the first surface is configured to be connected with a screen;

an earpiece assembly;

the method is characterized in that:

a first groove is formed in the first surface of the middle frame; the first groove is communicated with the outside of the terminal equipment through the sound outlet, and a first through hole is formed in the bottom wall of the first groove;

the earphone component is arranged on the second surface of the middle frame, is connected with the middle frame in a sealing way and corresponds to the first through hole;

the terminal device further comprises a sealing assembly capable of sealing the first groove;

the middle frame further comprises a side frame, wherein the side frame surrounds the outer sides of the first surface and the second surface and is respectively connected with the first surface and the second surface; the sound outlet hole is arranged on the side frame, and the sound outlet hole extends obliquely relative to the side frame from the second surface of the middle frame to the first surface of the middle frame, so that the sound outlet hole penetrates through an opening of the side frame and is close to the side, provided with the first surface, of the middle frame compared with the side, provided with the second surface, of the middle frame;

the first groove comprises a first groove part and a second groove part which are connected; the first through hole is communicated with the first groove part; the second groove part is positioned at the junction of the first surface and the side frame and is communicated with the sound outlet hole;

the sealing assembly comprises a cover plate which is arranged in the first groove and covers the first groove; the cover plate comprises a main body and a matching part, the main body is arranged on the first groove part, and the matching part is arranged on the second groove part, so that the bottom wall of the first groove and the sound outlet are positioned on the same side of the cover plate; and a convex supporting part is arranged on one side of the bottom wall of the first groove facing to the matching part, and the supporting part is contacted with the groove wall of the second groove part.

2. The terminal device of claim 1, wherein the earpiece assembly comprises:

a receiver;

a first seal provided with a second through hole communicating with the first through hole;

the second surface is provided with a second groove, and the receiver is arranged in the second groove and is in sealing connection with the bottom wall of the second groove through the first sealing piece.

3. The terminal device of claim 1, wherein the seal assembly further comprises:

and the second sealing piece is adhered to the middle frame and covers the gap between the cover plate and the middle frame.

4. A terminal device according to claim 3, characterized in that: a convex mounting part is arranged in the first groove; the sealing assembly further comprises a third sealing element, the third sealing element is arranged on the installation portion, and the cover plate is arranged on one side, away from the installation portion, of the third sealing element.

5. The terminal device of claim 1, wherein: the first face with the side frame is connected with the fillet transitional surface, the apron includes the cooperation portion of arc structure, cooperation portion set up in the second slot part makes cooperation portion with the surface of center is in the side frame with the juncture of first face coincides.

6. The terminal device of claim 5, wherein: the matching part is provided with an arc-shaped groove, and the arc-shaped groove is in butt joint with the sound outlet.

7. The terminal device of claim 1, wherein: and a third groove is formed in the bottom wall of the first groove.