Terminal device

Abstract

The invention discloses terminal equipment. The terminal equipment comprises a middle frame, a covering body, a circuit board, a loudspeaker and a sealing part, the middle frame comprises a frame and a middle plate, the middle plate and the frame define a containing cavity, the containing cavity comprises a first cavity and a second cavity, the first cavity comprises a cavity bottom wall, a first cavity side wall and a second cavity side wall, the first cavity side wall and the second cavity side wall are oppositely arranged, and the second cavity is used for containing a battery; the circuit board and the sealing part are both contained in the first cavity, the circuit board is sleeved with the sealing part, the first cavity comprises a functional cavity and a non-functional cavity, and the functional cavity and the non-functional cavity are separated through the sealing part; the loudspeaker is located in the functional cavity, the loudspeaker is connected with the middle frame, the loudspeaker and the circuit board are arranged in a spaced mode, the covering body covers the containing cavity, the periphery of the covering body is connected with the frame in a sealed mode, the sealing part is connected with the covering body in a sealed mode, the first cavity side wall, the second cavity side wall and the cavity bottom wall of the first cavity, and the covering body, the sealing part and the functional cavity form a rear cavity of the loudspeaker. The vibration sense of the terminal equipment can be reduced.

Description

Technical Field

[0001] This application relates to the field of terminal equipment technology, and in particular to a terminal equipment. Background Technology

[0002] To achieve better audio performance, loudspeakers typically require a larger rear cavity space. However, when loudspeakers are used in mobile phones and other terminal devices, the devices often lack sufficient space for them. To achieve better audio performance within the limited space of the terminal device, current technology uses the entire space between the device's mid-plate and backplate or display screen as the loudspeaker's rear cavity. However, the loudspeaker's operation causes gas fluctuations and airflow. This airflow propagates within the loudspeaker's rear cavity and acts on the backplate or display screen, resulting in noticeable vibrations within the terminal device. Summary of the Invention

[0003] This application provides a terminal device that can effectively reduce vibration when the speaker is working.

[0004] This application provides a terminal device, including a mid-frame, a cover, a circuit board, a speaker, and a sealing part. The mid-frame includes a frame and a mid-plate. The periphery of the mid-plate is connected to the frame. The mid-plate and the frame form a receiving cavity. The receiving cavity includes a first chamber and a second chamber, which are spaced apart. The first chamber includes a bottom wall and opposing first and second side walls. The second chamber is used to receive a battery.

[0005] The circuit board and the sealing part are both housed in the first chamber. The sealing part is sleeved on the circuit board. The first chamber includes a functional chamber and a non-functional chamber. The functional chamber and the non-functional chamber are separated by the sealing part. The non-functional chamber communicates with the second chamber.

[0006] The speaker is located inside the functional cavity, the speaker is connected to the middle frame, the speaker is spaced apart from the circuit board, the cover covers the receiving cavity, the periphery of the cover is sealed to the frame, the sealing part seals the cover, the first cavity sidewall, the second cavity sidewall and the bottom wall of the first cavity, the cover, the sealing part and the functional cavity form the rear cavity of the speaker.

[0007] When the terminal device is an inward-folding screen, the cover can be the back cover, outer screen, or display screen of the terminal device; when the terminal device is an outward-folding screen, the cover can be the back cover or display screen of the terminal device.

[0008] It is understood that the cover, the sealing part, and the functional cavity together define the rear cavity of the speaker, which is an open rear cavity. By designing an open rear cavity for the speaker, the space between the cover and the middle frame can be fully utilized, expanding the rear cavity space of the speaker and thus improving the speaker's audio performance. Compared to using a closed rear cavity, this application eliminates the need for a housing for the speaker, saving internal space in the terminal device and improving the utilization rate of the terminal device's internal space.

[0009] The rear cavity is sealed, thus the airflow generated by gas fluctuations during speaker operation is confined to this cavity. The airflow only acts on the portion of the cover that encloses the rear cavity, causing that portion to vibrate. This reduces the area affected by the airflow, minimizing the vibration range of the cover and consequently reducing vibration in the device. Especially since the battery's support for the cover is relatively weak, confining the airflow to the rear cavity prevents it from flowing between the battery and the cover, thus avoiding significant vibration of the portion of the cover opposite the battery and consequently preventing noticeable vibration in the device. Furthermore, pressing the portion of the cover opposite the battery changes the air pressure between them, creating airflow. Because the rear cavity is sealed, this airflow between the cover and battery does not enter the rear cavity and act on the diaphragm of the core, ensuring normal speaker operation, maintaining optimal audio quality, and preventing abnormal noises caused by pressing the cover.

[0010] In one possible implementation, the sealing portion includes a first mounting body, a connecting body, and a second mounting body. Along the length direction of the sealing portion, the first mounting body and the second mounting body are connected to opposite ends of the connecting body, and both the first mounting body and the second mounting body extend away from the connecting body along the length direction of the sealing portion.

[0011] The sealing part includes a first end face and a second end face disposed opposite to the first end face. The sealing part is provided with a through groove that penetrates the first end face and the second end face. Along the length direction of the sealing part, the through groove penetrates the first mounting body, the connecting body and the second mounting body.

[0012] The circuit board is inserted through the through groove, and the groove wall is sealed to the circuit board. The first mounting body is sealed to the first cavity sidewall, the second mounting body is sealed to the second cavity sidewall, and the connecting body is sealed to the bottom wall of the first cavity and the cover body.

[0013] The first mounting body can be made of either an elastic or a rigid material. The second mounting body can also be made of either an elastic or a rigid material. The connector can be at least partially elastic or entirely made of a rigid material.

[0014] Understandably, by providing a through groove in the sealing part for the circuit board to pass through, the circuit board can be properly positioned while the sealing part seals the rear cavity.

[0015] In one possible implementation, the connector is at least partially elastic.

[0016] The connector is at least partially elastic, and the elastic portion of the connector is capable of elastic deformation. The elastic deformation of the connector can occur through stretching or bending.

[0017] It is understood that the connector of the sealing part is at least partially elastic. During the process of fitting the sealing part onto the circuit board, by elastically deforming the connector, the shape of the through groove of the sealing part can be adapted to the shape of various positions on the circuit board, facilitating the fitting of the sealing part to the designated position on the circuit board. In one possible embodiment, both the first mounting body and the second mounting body are made of rigid materials.

[0018] The connector includes a first segment and a second segment. Along the extending direction of the connector, the first segment is embedded in the second segment and the first segment is connected to the second segment, or the first segment is connected to the end of the second segment.

[0019] The first segment is elastic, while the second segment is made of a rigid material.

[0020] Understandably, the second section of the connector is made of a rigid material, which supports the first section and ensures the overall stability of the connector's shape. Both the first and second mounting bodies are made of rigid materials, and they also support the connector, ensuring the overall stability of the sealing part's shape. This prevents excessive elasticity in the sealing part, which could affect its sealing effect.

[0021] In one possible implementation, the sealing part further includes an abutment body that protrudes from the peripheral wall of the through groove and is elastic.

[0022] The abutment body is interference-fitted with the circuit board.

[0023] Understandably, by setting up a flexible abutment, the abutment can be interference-fitted with the circuit board, thereby improving the sealing effect of the sealing part.

[0024] In one possible implementation, the terminal device further includes a first adhesive strip and a second adhesive strip, wherein the first adhesive strip is sandwiched between the cover and the first cavity sidewall, and the second adhesive strip is sandwiched between the cover and the second cavity sidewall.

[0025] Along the length of the sealing portion, the sealing portion is spaced apart from the first adhesive strip, and the sealing portion is spaced apart from the second adhesive strip.

[0026] Understandably, the first and second adhesive strips avoid the sealing part to prevent interference between the first and second adhesive strips and the sealing part, thereby preventing the first or second adhesive strips from lifting the cover.

[0027] In one possible implementation, the sealing portion further includes a peripheral side surface, which is connected between the first end face and the second end face;

[0028] The sealing part further includes a deformable part, which protrudes from the peripheral side surface and surrounds the peripheral side surface. The deformable part is elastic and is interference-fitted with the first cavity sidewall, the second cavity sidewall, the cover body, and the cavity bottom wall of the first chamber. Along the length direction of the sealing part, the deformable part is spaced apart from the first adhesive strip and the deformable part is spaced apart from the second adhesive strip.

[0029] Understandably, the deformation of the sealing part is elastic. On the one hand, it can make the deformation part press against the side wall of the first cavity, the side wall of the second cavity, the cover body and the bottom wall of the first cavity, thereby improving the sealing effect of the sealing part. On the other hand, when the airflow generated when the speaker is working acts on the cover body, the vibration of the cover body can be buffered by the deformation.

[0030] In one possible implementation, the peripheral side surface includes a first side surface, a second side surface, and a third side surface, wherein the first side surface and the third side surface are disposed opposite to each other, and the second side surface is connected between the first side surface and the third side surface;

[0031] The deformation includes a first rib, a second rib, and a third rib. The first rib surrounds the circumferential side surface. The second rib is located at the connection between the first side surface and the second side surface. The second rib is connected to the first rib and extends along the width direction of the sealing portion. The third rib is located at the connection between the second side surface and the third side surface. The third rib is connected to the first rib and extends along the width direction of the sealing portion.

[0032] The first rib is interference-fitted with the first cavity sidewall, the second cavity sidewall, the cover body, and the cavity bottom wall of the first chamber; the second rib is interference-fitted with the first cavity sidewall and the cover body; and the third rib is interference-fitted with the second cavity sidewall and the cover body.

[0033] Along the length of the sealing portion, the second rib is spaced apart from the first adhesive strip, and the third rib is spaced apart from the second adhesive strip.

[0034] Understandably, the first rib is strip-shaped and surrounds the periphery of the sealing part. The first rib is easily deformable and has an interference fit with the sidewalls of the first and second cavities, the cover, and the bottom wall of the first chamber. By further adding a second rib at the connection between the first and second sides of the sealing part, and a third rib at the connection between the second and third sides, a strip-shaped first gap is formed between the second rib and the first adhesive strip, and a strip-shaped second gap is formed between the third rib and the second adhesive strip. This increases the length of the first and second gaps, making it more difficult for airflow to escape to the outside of the rear cavity, improving the sealing performance of the speaker's rear cavity, and ensuring the speaker's audio performance; it also prevents airflow from easily escaping from the rear cavity and reducing its sealing performance.

[0035] In one possible implementation, the peripheral side surface includes a first side surface, a second side surface, and a third side surface, wherein the first side surface and the third side surface are disposed opposite to each other, and the second side surface is connected between the first side surface and the third side surface;

[0036] The deformed shape includes a first rib, a second rib, and a third rib. The first rib surrounds the peripheral side surface. The second rib is connected to the first mounting body and protrudes from the second side surface. The end of the second rib near the connecting body is connected to the first rib, and the other end of the second rib away from the connecting body is spaced apart from the first rib. The third rib is connected to the second mounting body and protrudes from the second side surface. The end of the third rib near the connecting body is connected to the first rib, and the other end of the third rib away from the connecting body is spaced apart from the first rib.

[0037] The first rib is interference-fitted with the first cavity sidewall, the second cavity sidewall, the cover body, and the bottom wall of the first cavity; the second rib is interference-fitted with the first cavity sidewall and the cover body; and the third rib is interference-fitted with the second cavity sidewall and the cover body.

[0038] Understandably, by adding a second and third rib on top of the first rib, the airflow in the rear cavity must pass through the first and second ribs, or the first and third ribs, to escape to the outside of the rear cavity. This increases the path length of the airflow to escape to the outside of the rear cavity, making it more difficult for the airflow to escape to the outside of the rear cavity, thus improving the sealing of the rear cavity of the speaker and ensuring the audio effect of the speaker. It also prevents the airflow from easily escaping from the rear cavity and reducing the sealing of the rear cavity.

[0039] In one possible implementation, the second rib, at its other end away from the connector, forms a first opening spaced apart from the first rib, and the third rib, at its other end away from the connector, forms a second opening spaced apart from the first rib.

[0040] The first opening faces the first adhesive strip, and the first adhesive strip, the first rib, and the second rib form a first glue-filling cavity. The first glue-filling cavity is filled with a first adhesive, and the first adhesive is connected to the periphery of the first glue-filling cavity. The second opening faces the second adhesive strip, and the second adhesive strip, the first rib, and the third rib form a second glue-filling cavity. The second glue-filling cavity is filled with a second adhesive, and the second adhesive is connected to the periphery of the second glue-filling cavity.

[0041] Understandably, by applying adhesive to the first filling cavity to form a first colloid and filling the cavity with it, the first colloid can seal the connection between the first adhesive strip and the sealing part. When the speaker operates, the airflow generated passes through the gap between the first adhesive strip and the first rib, and the airflow is obstructed by the first colloid, preventing it from escaping to the outside of the rear cavity through the gap between the first adhesive strip and the second rib. Therefore, the sealing of the rear cavity is ensured, guaranteeing the speaker's audio performance. Similarly, by applying adhesive to the second filling cavity to form a second colloid and filling the cavity with it, the second colloid can seal the connection between the second adhesive strip and the sealing part. When the speaker operates, the airflow generated passes through the gap between the second adhesive strip and the first rib, and the airflow is obstructed by the second colloid, preventing it from escaping to the outside of the rear cavity through the gap between the second adhesive strip and the third rib. Therefore, the sealing of the rear cavity is ensured, guaranteeing the speaker's audio performance.

[0042] In one possible implementation, the terminal device further includes a first blocking layer and a second blocking layer. One end of the first blocking layer is connected to the first adhesive strip, and the other end is connected to the surface of the first mounting body facing the cover. Along the width direction of the sealing portion, the first blocking layer and the deformable body are spaced apart. One end of the second blocking layer is connected to the second adhesive strip, and the other end is connected to the surface of the second mounting body facing the cover. Along the width direction of the sealing portion, the second blocking layer and the deformable body are spaced apart.

[0043] Understandably, by setting a first blocking layer, which is connected between the first adhesive strip and the first mounting body, and with the deformation of the first blocking layer and the sealing part spaced apart, the airflow generated when the speaker is operating needs to pass through a tortuous first path to escape to the outside of the rear cavity. Furthermore, the relatively long length of the first path increases the difficulty of airflow escaping to the outside of the rear cavity, thereby improving the sealing performance of the rear cavity and ensuring the speaker's audio effect, preventing airflow from easily escaping from the rear cavity and thus reducing the speaker's audio performance. Similarly, by setting a second blocking layer, which is connected between the second adhesive strip and the second mounting body, and with the deformation of the second blocking layer and the sealing part spaced apart, the airflow generated when the speaker is operating needs to pass through a tortuous second path to escape to the outside of the rear cavity. Furthermore, the relatively long length of the second path increases the difficulty of airflow escaping to the outside of the rear cavity, thereby improving the sealing performance of the rear cavity and ensuring the speaker's audio effect.

[0044] In one possible implementation, the circuit board is provided with a first notch and a second notch. Along the thickness direction of the terminal device, both the first notch and the second notch penetrate two surfaces of the circuit board in the thickness direction. The first notch faces the first cavity sidewall, and the second notch faces the second cavity sidewall.

[0045] The connecting body of the sealing part is connected to two surfaces in the thickness direction of the circuit board, the first mounting body of the sealing part is engaged with the first notch, and the second mounting body of the sealing part is engaged with the second notch.

[0046] It is understandable that by setting the first and second notches on the circuit board, the position of the sealing part on the circuit board can be positioned, making it convenient for the sealing part to be quickly fitted onto the designated position on the circuit board.

[0047] In one possible implementation, the first cavity sidewall is provided with two first protrusions, the two first protrusions are spaced apart from each other, and a first limiting groove is formed between the two first protrusions; the second cavity sidewall is provided with two second protrusions, the two second protrusions are spaced apart from each other, and a second limiting groove is formed between the two second protrusions; the first limiting groove and the second limiting groove are arranged opposite to each other.

[0048] Both first protrusions are located at the first notch, the first mounting body of the sealing part is limited to the first limiting groove, both second protrusions are located at the second notch, and the second mounting body of the sealing part is limited to the second limiting groove.

[0049] It is understandable that the first cavity sidewall is provided with two first protrusions, and the first mounting body of the sealing part is limited to the first limiting groove between the two first protrusions. The second cavity sidewall is provided with two second protrusions, and the second mounting body of the sealing part is limited to the second limiting groove. The first limiting groove and the second limiting groove together limit the sealing part.

[0050] In one possible implementation, the first chamber includes a first sub-chamber, a second sub-chamber, and a third sub-chamber. Along the width direction of the terminal device, the second sub-chamber and the second chamber are arranged side by side. Along the length direction of the terminal device, the first sub-chamber and the third sub-chamber are located at opposite ends of the second sub-chamber and the second chamber, respectively. The first sub-chamber, the second sub-chamber, and the third sub-chamber are interconnected.

[0051] The circuit board includes a first board body, a second board body, and a third board body. Along the length direction of the terminal device, the first board body, the second board body, and the third board body are connected in sequence. Along the width direction of the terminal device, the second board body is connected to the same side of the first board body and the third board body. The first board body is accommodated in the first sub-cavity, the second board body is accommodated in the second sub-cavity, and the third board body is accommodated in the third sub-cavity.

[0052] The sealing part is sleeved on the second plate body. Along the width direction of the terminal device, the two cavity sidewalls of the second sub-cavity are respectively the first cavity sidewall and the second cavity sidewall; or...

[0053] The sealing part is sleeved on the first plate body. Along the length direction of the terminal device, the two cavity sidewalls opposite to each other in the first sub-cavity are the first cavity sidewall and the second cavity sidewall, respectively; or...

[0054] The sealing part is sleeved on the third plate. Along the length direction of the terminal device, the two cavity sidewalls of the third sub-cavity are respectively the first cavity sidewall and the second cavity sidewall.

[0055] Understandably, by fitting the sealing part onto the first plate of the circuit board, the process of fitting the sealing part onto the circuit board is simplified, and in particular, the sealing effect of the sealing part can be guaranteed. This avoids large elastic deformation of the sealing part during the fitting process, which would reduce its elasticity and consequently decrease its sealing effect. By fitting the sealing part onto the second plate of the circuit board, the rear cavity includes the first sub-cavity and part of the second sub-cavity, providing a larger space for the speaker's rear cavity, thus resulting in better audio performance. By fitting the sealing part onto the third plate of the circuit board, the rear cavity includes the first sub-cavity, the second sub-cavity, and part of the third sub-cavity, providing an even larger space for the speaker's rear cavity, thus resulting in even better audio performance.

[0056] In one possible implementation, the first chamber includes a first sub-chamber and a second sub-chamber, and the first sub-chamber, the second chamber, and the second sub-chamber are arranged sequentially along the length of the terminal device;

[0057] The circuit board includes a first board body and a second board body, wherein the first board body is accommodated in the first sub-cavity and the second board body is accommodated in the second sub-cavity;

[0058] The sealing part is sleeved on the first plate body, and along the width direction of the terminal device, the two cavity sidewalls of the first sub-cavity are respectively the first cavity sidewall and the second cavity sidewall.

[0059] It is understood that when the circuit board includes a first board and a second board, and one of the first board and the second board is a main board and the other is a sub-board, the method of forming the rear cavity of the speaker in this application is also applicable.

[0060] In one possible implementation, the middle plate is provided with a first mounting hole and a second mounting hole. Along the thickness direction of the terminal device, the first mounting hole penetrates the bottom wall of the functional cavity, and the second mounting hole penetrates the bottom wall of the non-functional cavity.

[0061] The terminal device includes a back panel, a display screen, and a barrier. The back panel and the display screen are both connected to the middle plate. Along the thickness direction of the terminal device, the back panel and the display screen are located on opposite sides of the middle plate.

[0062] The cover is the back panel, the barrier is located between the middle plate and the display screen, the barrier is connected to the middle plate and the display screen, and the barrier blocks the first mounting hole and the second mounting hole.

[0063] Understandably, when the cover is a back panel, the middle panel has a first mounting hole and a second mounting hole, with the first mounting hole communicating with the rear cavity and the second mounting hole communicating with the non-functional cavity, by setting a barrier in the gap between the middle panel and the first part of the display screen, and the barrier blocking the first and second mounting holes, the airflow generated when the speaker is working can be prevented from entering the gap between the middle panel and the first part of the display screen through the first mounting hole from the rear cavity, and then entering the non-functional cavity through the second mounting hole. This prevents the airflow generated when the speaker is working from reaching the space between the battery and the back panel through the non-functional cavity, thus preventing significant vibration of the part of the back panel opposite the battery. Furthermore, when the part of the back panel opposite the battery is pressed, the air pressure between the back panel and the battery changes, meaning airflow is also generated between them. The airflow between the back panel and the battery will not enter the rear cavity through the non-functional cavity, the second mounting hole, and the first mounting hole to act on the diaphragm of the core, thus ensuring the normal operation of the speaker and its audio performance.

[0064] In one possible implementation, the middle plate is provided with a first mounting hole and a second mounting hole. Along the thickness direction of the terminal device, the first mounting hole penetrates the bottom wall of the functional cavity, and the second mounting hole penetrates the bottom wall of the non-functional cavity.

[0065] The terminal device includes a back panel, a display screen, and a barrier. The back panel and the display screen are both connected to the middle plate. Along the thickness direction of the terminal device, the back panel and the display screen are located on opposite sides of the middle plate.

[0066] The cover is the display screen, the barrier is located between the middle plate and the back plate, the barrier is connected to the middle plate and the back plate, and the barrier blocks the first mounting hole and the second mounting hole.

[0067] Understandably, when the cover is a display screen, by placing a barrier in the gap between the middle plate and the back plate, and by blocking the first and second mounting holes, the airflow generated during speaker operation can be prevented from entering the gap between the middle plate and the back plate through the first mounting hole, and then entering the non-functional cavity through the second mounting hole. This prevents the airflow generated during speaker operation from reaching the area between the battery and the first part of the display screen through the non-functional cavity, thus preventing significant vibration on the part of the display screen opposite the battery. Furthermore, when the part of the first part of the display screen opposite the battery is pressed, the air pressure between the first part of the display screen and the battery changes, resulting in airflow between them. This airflow between the first part of the display screen and the battery will not enter the rear cavity through the non-functional cavity, the second mounting hole, and the first mounting hole to act on the diaphragm of the core, thus ensuring the normal operation of the speaker and its audio performance. Attached Figure Description

[0068] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0069] Figure 1 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application;

[0070] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the terminal device shown.

[0071] Figure 3 This is an exploded view of a portion of the structure of the terminal device according to the first embodiment of this application;

[0072] Figure 4 for Figure 3 A schematic diagram of the structure of the midframe of the terminal device shown at the first angle;

[0073] Figure 5 for Figure 4 A structural schematic diagram of the second angle of the middle frame shown;

[0074] Figure 6 for Figure 3 A schematic diagram of the first angle of the sealing part of the terminal device shown;

[0075] Figure 7 for Figure 6 A schematic diagram of the second angle of the sealing part shown;

[0076] Figure 8 for Figure 6 A schematic diagram showing the sealing part fitted onto the circuit board.

[0077] Figure 9 for Figure 3 A schematic diagram of the speaker structure of the terminal device shown;

[0078] Figure 10 for Figure 3 An assembly diagram of a portion of the terminal device shown.

[0079] Figure 11 for Figure 10 A schematic cross-sectional view of the terminal device in the AA direction;

[0080] Figure 12 This is an assembly diagram of a portion of the structure of the terminal device according to the second embodiment of this application;

[0081] Figure 13 for Figure 12 The diagram shows the structure of the sealing part;

[0082] Figure 14 This is an assembly diagram of a portion of the structure of the terminal device according to the third embodiment of this application;

[0083] Figure 15 for Figure 14 The diagram shows the structure of the sealing part;

[0084] Figure 16 This is an assembly diagram of a portion of the structure of the terminal device according to the fourth embodiment of this application;

[0085] Figure 17 This is an assembly diagram of a portion of the structure of the terminal device according to the fifth embodiment of this application;

[0086] Figure 18This is an assembly diagram of a portion of the structure of the terminal device according to the sixth embodiment of this application;

[0087] Figure 19 This is an assembly diagram of a portion of the structure of the terminal device according to the seventh embodiment of this application;

[0088] Figure 20 This is an assembly diagram of a portion of the structure of the terminal device according to the eighth embodiment of this application;

[0089] Figure 21 for Figure 20 The diagram shows the structure of the barrier body of the terminal device assembled in the middle frame. Detailed Implementation

[0090] To facilitate understanding, the terms used in the embodiments of this application will be explained first.

[0091] And / or: This is simply a way of describing the relationship between related objects. It indicates that there can be three kinds of relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0092] Multiple: refers to two or more.

[0093] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.

[0094] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0095] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the terminal device 1000 provided in the embodiments of this application; Figure 2 for Figure 1 The diagram shows the exploded structure of the terminal device 1000.

[0096] This application provides a terminal device 1000. The terminal device 1000 may include, but is not limited to, mobile phones, tablets, laptops, walkie-talkies, Bluetooth speakers / headphones, Walkie-Talkie, and other terminal devices with broadcasting functions. The terminal device 1000 can be a curved screen phone or a flat screen phone, a candybar phone or a foldable screen phone. More specifically, the terminal device 1000 can be an outward-folding foldable screen phone or an inward-folding foldable screen phone.

[0097] In this embodiment, a foldable screen phone is used as an example for the terminal device 1000. Specifically, an inward-folding screen phone is used as an example.

[0098] For ease of description, define Figure 1 The length direction of the terminal device 1000 shown is the X-axis direction, the width direction is the Y-axis direction, and the thickness direction is the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are all perpendicular to each other. The terms "same," "equal," or "parallel" used below are all subject to tolerance.

[0099] Terminal device 1000 includes a housing assembly 500, a display screen 400, a battery 600, a circuit board 300, a speaker 200, and a sealing portion 100. Along the thickness direction (Z-axis direction) of terminal device 1000, the display screen 400 is located on one side of the housing assembly 500, which supports the display screen 400. The battery 600, circuit board 300, speaker 200, and sealing portion 100 are all connected to the housing assembly 500. The battery 600 powers the speaker 200 and circuit board 300.

[0100] The housing assembly 500 includes a first housing 510, a second housing 520, and a pivot mechanism 530. The pivot mechanism 530 is rotatably connected between the first housing 510 and the second housing 520 to achieve a rotatable connection between the first housing 510 and the second housing 520. Both the first housing 510 and the second housing 520 include a back plate 540 and a middle frame 550.

[0101] Along the thickness direction (Z-axis direction) of the terminal device 1000, the middle frame 550 of the first housing 510 and the back plate 540 of the first housing 510 are disposed opposite each other. Along the thickness direction (Z-axis direction) of the terminal device 1000, the middle frame 550 of the second housing 520 and the back plate 540 of the second housing 520 are disposed opposite each other. A pivot mechanism 530 is rotatably connected to the first housing 510 and the second housing 520. The first housing 510 and the second housing 520 are rotatably connected via the pivot mechanism 530 to achieve folding and unfolding of the first housing 510 relative to the second housing 520. In this embodiment, the back plate 540 of the first housing 510 is a back cover, and the back plate 540 of the second housing 520 is an outer screen. In other embodiments, the back plate 540 of the first housing 510 may also be an outer screen, and the back plate 540 of the second housing 520 may be a back cover.

[0102] The display screen 400 is mounted on the first housing 510 and the second housing 520, and is foldable around the pivot mechanism 530. The display screen 400 is a flexible screen. The display screen 400 includes a first portion 410, a second portion 420, and a bendable portion 430. The bendable portion 430 connects the first portion 410 and the second portion 420. The first portion 410 is mounted on the middle frame 550 of the first housing 510, and the second portion 420 is mounted on the middle frame 550 of the second housing 520. The bendable portion 430 is disposed opposite to the pivot mechanism 530.

[0103] The first housing 510 and the second housing 520 can rotate relative to each other via the pivot mechanism 530, allowing the display screen 400 to switch between an unfolded state and a folded state. Specifically, when the first housing 510 and the second housing 520 are rotated relative to each other to be arranged side by side, the first portion 410 and the second portion 420 of the display screen 400 are unfolded relative to each other, and the bendable portion 430 is flattened without bending. When the first housing 510 and the second housing 520 are rotated relative to each other to be arranged opposite each other, the first portion 410 and the second portion 420 of the display screen 400 are arranged opposite each other, and the bendable portion 430 is bent.

[0104] The battery 600, circuit board 300, speaker 200, and sealing part 100 can all be fixed to the middle frame 550 of the first housing 510, or they can all be fixed to the middle frame 550 of the second housing 520. In this embodiment, the example is only described with the battery 600, circuit board 300, speaker 200, and sealing part 100 all fixed to the middle frame 550 of the first housing 510.

[0105] In this embodiment, the terminal device 1000 is provided with a sound outlet 501. The shape of the sound outlet 501 can be, but is not limited to, various shapes such as circular, strip, and elliptical. The sound outlet 501 can be formed in the middle frame 550 of the first housing 510, or it can be formed in the first part 410 of the display screen 400, or between the edge of the first part 410 of the display screen 400 and the middle frame 550. This embodiment only illustrates the example of the sound outlet 501 being formed in the middle frame 550 of the first housing 510.

[0106] It is understandable that when the back plate 540 of the first housing 510 is an outer screen, the sound outlet 501 can also be opened on the back plate 540 of the first housing 510.

[0107] In this embodiment, the speaker 200 can be used as a lower speaker. The lower speaker is used to output the sound of the terminal device 1000. The speaker 200 can also be used as an upper speaker 200. The upper speaker can be used as the earpiece of the terminal device 1000, or it can be used to output the sound of the terminal device 1000. This embodiment is only described using the lower speaker 200 as an example. It can be understood that the same principle applies when the speaker 200 is the upper speaker 200.

[0108] Please see Figure 3 , Figure 3 This is an exploded view of a portion of the structure of a terminal device 1000 according to the first embodiment of this application. The first embodiment of this application provides a terminal device 1000.

[0109] Please refer to the following: Figure 3 , Figure 4 and Figure 5 , Figure 4 for Figure 3 A schematic diagram of the structure of the middle frame 550 of the terminal device 1000 at a first angle; Figure 5 for Figure 4 The diagram shows the structure of the middle frame 550 at the second angle.

[0110] The middle frame 550 includes a border 560 and a middle plate 570. The border 560 is positioned around the periphery of the middle plate 570. The border 560 is connected to the periphery of the middle plate 570.

[0111] It should be noted that the thickness direction of the middle frame 550 is the same as the thickness direction (Z-axis direction) of the terminal device 1000, the length direction of the middle frame 550 is the same as the length direction (X-axis direction) of the terminal device 1000, and the width direction of the middle frame 550 is the same as the width direction (Y-axis direction) of the terminal device 1000.

[0112] The frame 560 is a frame. The frame 560 includes a first surface 561, a second surface 562, and an inner peripheral surface 563. The first surface 561 and the second surface 562 are arranged facing away from each other along the thickness direction of the middle frame 550. The inner peripheral surface 563 connects the first surface 561 and the second surface 562. The frame 560 is provided with a sound outlet 501. Along the length direction (X-axis direction) of the middle frame 550, the sound outlet 501 is located at one end of the frame 560. The sound outlet 501 penetrates the frame 560.

[0113] The middle plate 570 is a plate body. The middle plate 570 includes a first surface 571 and a second surface 572. Along the thickness direction (Z-axis direction) of the middle plate 570, the first surface 571 and the second surface 572 are arranged facing away from each other. The periphery of the middle plate 570 is connected to the inner peripheral surface 563 of the frame 560. Along the thickness direction (Z-axis direction) of the middle frame 550, the first surface 571 of the middle plate 570 and the first surface 561 of the frame 560 have the same orientation. The first surface 561 of the frame 560 protrudes from the first surface 571 of the middle plate 570. The second surface 572 of the middle plate 570 and the second surface 562 of the frame 560 have the same orientation. The middle plate 570 and the frame 560 together form a receiving cavity 580. It can be understood that the middle plate 570 forms the bottom wall of the receiving cavity 580. The first surface 571 of the middle plate 570 is the wall surface of the bottom wall of the receiving cavity 580. The frame 560 forms the periphery of the cavity 580. The sound outlet 501 of the frame 560 is connected to the cavity 580.

[0114] A baffle 590 is protruding from the first surface 571 of the middle plate 570. This corresponds to a baffle 590 protruding from the bottom wall of the receiving cavity 580. In this embodiment, the baffle 590 is approximately "C"-shaped. Both ends of the baffle 590 are connected to the inner peripheral surface 563 of the frame 560. The baffle 590 divides the receiving cavity 580 into a first chamber 581 and a second chamber 582. The first chamber 581 and the second chamber 582 are separated by the baffle 590. The first chamber 581 is used to accommodate the circuit board 300 and the speaker 200. The second chamber 582 is used to accommodate the battery 600. The baffle 590 can be a continuous strip structure or an intermittent strip structure.

[0115] Specifically, the retaining rib 590 includes a first protruding rib 591, a second protruding rib 592, and a third protruding rib 593. The first protruding rib 591, second protruding rib 592, and third protruding rib 593 are connected sequentially. The first protruding rib 591 extends along the width direction of the middle frame 550. One end of the first protruding rib 591 is connected to the side frame 560, and the other end is spaced apart from the side frame 560. The third protruding rib 593 extends along the width direction of the middle frame 550. One end of the third protruding rib 593 is connected to the side frame 560, and the other end is spaced apart from the side frame 560. Along the width direction of the middle frame 550, the first protruding rib 591 and the third protruding rib 593 are located on the same side of the middle frame 550. Along the length direction of the middle frame 550, the first protruding rib 591 and the third protruding rib 593 are spaced apart and opposite to each other. The second protruding rib 592 extends along the length direction of the middle frame 550. The opposite ends of the second protruding rib 592 are respectively connected to the first protruding rib 591 and the third protruding rib 593.

[0116] The first chamber 581 includes a first sub-cavity 5811, a second sub-cavity 5812, and a third sub-cavity 5813. Along the width direction (Y-axis direction) of the middle frame 550, the second sub-cavity 5812 and the second chamber 582 are arranged side-by-side. The width of the second chamber 582 is greater than the width of the second sub-cavity 5812. Along the length direction (X-axis direction) of the middle frame 550, the second sub-cavity 5812 and the second chamber 582 are approximately located in the middle of the middle frame 550. The first sub-cavity 5811 and the third sub-cavity 5813 are located at opposite ends of the second sub-cavity 5812 and the second chamber 582, respectively. The first sub-cavity 5811 communicates with the sound outlet 501 of the frame 560. The first sub-cavity 5811, the second sub-cavity 5812, and the third sub-cavity 5813 are interconnected. It can be understood that the second chamber 582 and the first sub-cavity 5811 are separated by a first rib 591. The second chamber 582 and the second sub-chamber 5812 are separated by a second rib 592. The second chamber 582 and the third sub-chamber 5813 are separated by a third rib 593.

[0117] In this embodiment, the first chamber 581 includes a first chamber sidewall M1 and a second chamber sidewall M2 disposed opposite to each other. Specifically, along the width direction of the middle frame 550, the two opposite chamber sidewalls of the second sub-cavity 5812 are the first chamber sidewall M1 and the second chamber sidewall M2, respectively. The first chamber sidewall M1 is specifically formed by the frame 560. The second chamber sidewall M2 is specifically formed by the second rib 592.

[0118] In other embodiments, the first cavity sidewall M1 may be formed by the second rib 592, and the second cavity sidewall M2 may be formed by the frame 560.

[0119] A first limiting groove 574 is formed on the side wall M1 of the first cavity. The first limiting groove 574 is specifically formed between two first protrusions 575 protruding from the side wall M1 of the first cavity. A second limiting groove 576 is formed on the side wall M2 of the second cavity. The second limiting groove 576 is specifically formed between two second protrusions 577 protruding from the side wall M2 of the second cavity. Along the width direction of the middle frame 550, the first limiting groove 574 and the second limiting groove 576 are arranged opposite to each other.

[0120] In other embodiments, the first cavity sidewall M1 may not be provided with the first limiting groove 574, and the second cavity sidewall M2 may not be provided with the second limiting groove 576.

[0121] Please continue reading. Figure 3In this embodiment, the circuit board 300 includes a first board body 310, a second board body 320, and a third board body 330. Along the length direction (X-axis direction) of the circuit board 300, the first board body 310, the second board body 320, and the third board body 330 are connected sequentially. Along the width direction (Y-axis direction) of the circuit board 300, the second board body 320 is connected to the same side of the first board body 310 and the third board body 330. The width of the second board body 320 is less than the length and width of the first board body 310 and the length and width of the third board body 330. The first board body 310, the second board body 320, and the third board body 330 are integrally formed structural components. In other embodiments, the first board body 310, the second board body 320, and the third board body 330 may also be independent structural components. The width of the second board body 320 may also be greater than or equal to the length or width of the first board body 310 and the length or width of the third board body 330.

[0122] It should be noted that, Figure 3 The dashed lines in the diagram are only used to divide the first board body 310, the second board body 320 and the third board body 330 of the circuit board 300. They do not belong to the specific structure of the circuit board 300, so they cannot form a restriction on the specific structure of the circuit board 300.

[0123] In this embodiment, the circuit board 300 is provided with a first notch 340 and a second notch 350. Specifically, along the width direction of the circuit board 300, the first notch 340 and the second notch 350 are symmetrically arranged on opposite sides of the second plate body 320. Along the thickness direction of the circuit board 300, both the first notch 340 and the second notch 350 penetrate both surfaces of the second plate body 320 in the thickness direction. In other embodiments, the circuit board 300 may not have the first notch 340 and the second notch 350.

[0124] Please refer to the following: Figure 6 and Figure 7 , Figure 6 for Figure 3 A schematic diagram of the structure of the sealing part 100 of the terminal device 1000 at a first angle; Figure 7 for Figure 6 A schematic diagram of the second angle of the sealing part 100 shown.

[0125] The sealing portion 100 includes a first mounting body 10, a second mounting body 20, and a connecting body 30. Along the length of the sealing portion 100, the first mounting body 10 and the second mounting body 20 are connected to opposite ends of the connecting body 30, and both the first mounting body 10 and the second mounting body 20 extend away from the connecting body 30 along the length of the sealing portion 100. The first mounting body 10 is made of a rigid material. The second mounting body 20 is made of a rigid material. In other embodiments, the first mounting body 10 may also be made of an elastic material, and the second mounting body 20 may also be made of an elastic material.

[0126] In this embodiment, the connector 30 extends at least partially offset from the length direction of the sealing portion 100. The shape of the connector 30 includes, but is not limited to, irregular shapes such as "C", "S", "V", and "W". For example,... Figure 6 and Figure 7 The connector 30 is C-shaped. In other embodiments, the connector 30 may also extend along the length of the sealing portion 100, i.e., the connector 30 is I-shaped.

[0127] The connector 30 includes a first segment 31 and a second segment 32. Along the extending direction of the connector 30, the first segment 31 is embedded in the second segment 32, and the first segment 31 and the second segment 32 are connected; alternatively, the first segment 31 is embedded and connected to the second segment 32; or, the first segment 31 is connected to the end of the second segment 32. The number of first segments 31 includes, but is not limited to, one, two, or more. The first segment 31 of the connector 30 is made of an elastic material, and the second segment 32 is made of a rigid material. In other embodiments, the first segment 31 and the second segment 32 of the connector 30 may both be made of elastic materials, or the first segment 31 and the second segment 32 of the connector 30 may both be made of rigid materials.

[0128] It should be noted that, Figure 6 and Figure 7 The dashed lines are only used to divide the first segment 31 and the second segment 32 of the first mounting body 10, the second mounting body 20 and the connecting body 30. They do not belong to the specific structure of the sealing part 100, so they cannot form a restriction on the specific structure of the sealing part 100. Figure 6 and Figure 7 The illustration only takes the first segment 31 of the connector 30 embedded between the second segment 32 as an example.

[0129] The sealing portion 100 includes a first end face 101, a second end face 102, and a peripheral side face 103. The first end face 101 and the second end face 102 are disposed facing away from each other along the width direction of the sealing portion 100. The peripheral side face 103 is connected between the first end face 101 and the second end face 102. Specifically, the peripheral side face 103 includes a first side face 1031, a second side face 1032, a third side face 1033, and a fourth side face 1034. The first side face 1031 and the third side face 1033 are disposed facing away from each other along the length direction of the sealing portion 100 and are connected between the first end face 101 and the second end face 102. The second side face 1032 and the fourth side face 1034 are disposed facing away from each other along the thickness direction of the sealing portion 100. The second side face 1032 and the fourth side face 1034 are connected between the first end face 101 and the second end face 102, and between the first side face 1031 and the third side face 1033.

[0130] The sealing part 100 is provided with a through groove 104. Along the width direction of the sealing part 100, the through groove 104 passes through the first end face 101 and the second end face 102. Along the length direction of the sealing part 100, the through groove 104 passes through the first mounting body 10, the connecting body 30 and the second mounting body 20.

[0131] Please continue reading. Figure 6 and Figure 7 In this embodiment, the sealing portion 100 further includes a deformable part 40 and an abutment 50. The deformable part 40 protrudes from the peripheral side surface 103 of the sealing portion 100 and surrounds the peripheral side surface 103. The deformable part 40 can be strip-shaped or sheet-shaped. The deformable part 40 is made of an elastic material. The abutment 50 protrudes from the peripheral wall of the through groove 104. The abutment 50 is also made of an elastic material.

[0132] In other embodiments, the sealing part 100 may also exclude the deformable part 40 and the abutment 50. In this case, the first segment 31 and the second segment 32 of the first mounting body 10, the second mounting body 20, and the connecting body 30 are all made of elastic materials.

[0133] Please refer to the following: Figure 6 , Figure 7 and Figure 8 , Figure 8 for Figure 6 The diagram shows the structure of the sealing part 100 sleeved on the circuit board 300.

[0134] In this embodiment, the sealing part 100 is sleeved on the second plate body 320 of the circuit board 300. The second plate body 320 of the circuit board 300 passes through the through groove 104 of the sealing part 100. The peripheral wall of the through groove 104 is sealed to the second plate body 320 of the circuit board 300. Specifically, the connecting body 30 of the sealing part 100 is connected to two surfaces in the thickness direction of the circuit board 300. The first mounting body 10 of the sealing part 100 is engaged with the first notch 340 of the circuit board 300. The second mounting body 20 of the sealing part 100 is engaged with the second notch 350 of the circuit board 300. The abutment body 50 of the sealing part 100 is interference-fitted with the second plate body 320 of the circuit board 300. It can be understood that when the sealing part 100 is not provided with the abutment body 50, the peripheral wall of the through groove 104 is directly sealed to the second plate body 320 of the circuit board 300.

[0135] It is understood that in this embodiment, the first plate 310, the second plate 320, and the third plate 330 are integrally formed structural components. The sealing part 100 is sleeved on the second plate 320. It is necessary to first sleeve the sealing part 100 on the first plate 310 and then slide the sealing part 100 from the first plate 310 to the second plate 320. The first segment 31 of the connecting body 30 of the sealing part 100 is made of an elastic material. During the process of the sealing part 100 being sleeved on the first plate 310 and sliding from the first plate 310 to the second plate 320, by elastically deforming (bending or stretching) the first segment 31 of the connecting body 30, the shape of the through groove 104 of the sealing part 100 can be adapted to the shape of various positions of the circuit board 300, which facilitates the assembly of the sealing part 100 from the first plate 310 to the second plate 320. The second section 32 of the connector 30 is made of a rigid material. The second section 32 of the connector 30 can support the first section 31 and ensure the stability of the overall shape of the connector 30 of the sealing part 100; and prevent the overall elasticity of the connector 30 from being too large, which would affect the sealing effect of the sealing part 100.

[0136] It should be noted that in other embodiments, the materials of the first mounting body 10, the second mounting body 20, and the first segment 31 and the second segment 32 of the connecting body 30 can all be rigid materials. In this case, the first mounting body 10 directly engages with the first notch 340 of the second plate 320, and the second mounting body 20 directly engages with the second notch 350 of the second plate 320. The first mounting body 10, the second mounting body 20, and the connecting body 30 are spliced ​​together to form a whole. Alternatively, the sealing part 100 is directly sleeved on the second plate 320, and the first plate 310, the second plate 320, and the third plate 330 of the circuit board 300 are spliced ​​together to form a whole. That is to say, when the first mounting body 10, the second mounting body 20, and the first segment 31 and the second segment 32 of the connecting body 30 are all rigid materials, the sealing part 100 is directly assembled on the second plate 320 without elastic deformation, sliding from the first plate 310 to the second plate 320.

[0137] Please see Figure 9 , Figure 9 for Figure 3The diagram shows the structure of the loudspeaker 200 in the terminal device 1000. In this embodiment, the loudspeaker 200 includes a support 220 and a core 210. The support 220 has a sound guide channel 221. The core 210 includes a frame, a diaphragm, and a driving device. The frame forms the supporting skeleton of the core. The frame has an opening. The diaphragm is supported and fixed to the frame. The diaphragm covers the opening. The driving device is located inside the frame. The driving device is used to drive the diaphragm to vibrate relative to the frame. The driving device includes, but is not limited to, an electric (moving coil) driving device, an electrostatic (capacitive) driving device, an electromagnetic (reed) driving device, or a piezoelectric (crystal) driving device. In this embodiment, the driving device is a moving coil driving device. The driving device includes a voice coil and a magnetic circuit system. The voice coil cooperates with the magnetic circuit system to drive the diaphragm to vibrate relative to the frame.

[0138] In this embodiment, the core 210 is supported by the bracket 220. Along the height direction of the speaker 200, the diaphragm of the core 210 faces the bracket 220. A front cavity is formed between the core 210 and the bracket 220. It can be understood that the front cavity is confined between the core 210 and the bracket 220, and is a closed front cavity. Along the length direction of the speaker 200, the sound guide channel 221 is located on one side of the core 210. The sound guide channel 221 communicates with the front cavity.

[0139] It should be noted that, Figure 9 The speaker 200 shown is for illustrative purposes only and does not constitute a specific limitation on the overall shape of the speaker 200. Figure 9 As shown, the overall shape of the speaker 200 can be rectangular; the overall shape of the speaker 200 can also be other irregular shapes. This embodiment does not impose specific limitations on the overall shape of the speaker 200.

[0140] Please refer to the following: Figure 3 , Figure 10 and Figure 11 , Figure 10 for Figure 3 An assembly diagram of a portion of the structure of the terminal device 1000 shown; Figure 11 for Figure 10 A schematic cross-sectional view of the terminal device 1000 along the AA direction.

[0141] In this embodiment, the battery 600 is housed in the second chamber 582 of the middle frame 550. The circuit board 300, the sealing portion 100, and the speaker 200 are all housed in the first chamber 581 of the middle frame 550. Specifically, the first plate body 310 of the circuit board 300 is located in the first sub-cavity 5811. The second plate body 320 is located in the second sub-cavity 5812. The third plate body 330 is located in the third sub-cavity 5813. The two first protrusions 575 of the first cavity sidewall M1 are both located in the first notch 340. The two second protrusions 577 of the second cavity sidewall M2 are both located in the second notch 350. It can be understood that the first notch 340 avoids the two first protrusions 575. The second notch 350 avoids the two second protrusions 577.

[0142] The sealing part 100 is sealed to the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first mounting body 10 of the sealing part 100 is limited to the first limiting groove 574. The second mounting body 20 is limited to the second limiting groove 576. The deformation part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. The sealing part 100 divides the first chamber 581 into a functional cavity and a non-functional cavity. The functional cavity and the non-functional cavity are separated by the sealing part 100. The functional cavity includes a first sub-cavity 5811 and a portion of a second sub-cavity 5812. The non-functional cavity includes a third sub-cavity 5813 and another portion of a second sub-cavity 5812. It can be understood that a portion of the first cavity sidewall M1 forms a portion of the cavity sidewall of the functional cavity, and a portion of the second cavity sidewall M2 forms another portion of the cavity sidewall of the functional cavity. The periphery of the functional cavity is formed by a portion of the frame 560 and a portion of the baffle 590.

[0143] The speaker 200 is located within the functional cavity. The speaker 200 is connected to the mid-frame 550. Specifically, the speaker 200 is located in the first sub-cavity 5811. The speaker 200 is spaced apart from the circuit board 300. The bracket 220 is connected to the mid-frame 550. The sound guide channel 221 of the bracket 220 is located between the core 210 and the frame 560. The sound guide channel 221 faces the sound outlet 501 of the frame 560. The sound guide channel 221 communicates with the sound outlet 501 of the frame 560.

[0144] A backplate 540 forms a cover that covers the receiving cavity 580. The periphery of the cover is sealed to the frame 560. The cover is sealed to the sealing part 100. The cover is sealed to the periphery wall of the functional cavity. Specifically, the terminal device 1000 also includes an adhesive layer 700. The adhesive layer 700 covers the first surface 561 of the frame 560. Along the thickness direction (Z-axis direction) of the terminal device 1000, the adhesive layer 700 also covers the end of the periphery wall of the functional cavity facing away from the middle plate 570. The adhesive layer 700 adhesively connects the cover to the frame 560. The adhesive layer 700 also adhesively connects the cover to the periphery wall of the functional cavity. Along the thickness direction (Z-axis direction) of the terminal device 1000, there are gaps between the cover, the battery 600, and the circuit board 300. It is understood that to improve the stability of the cover, a support, such as foam, can be provided on the first surface 571 of the circuit board 300 to support the cover. To ensure the shape stability of the battery 600 and to prevent the battery 600 from compressing the cover when it expands, only a small number of supports are typically provided between the cover and the battery 600. In other words, the support force of the battery 600 on the cover is relatively weak.

[0145] The adhesive layer 700 includes a first adhesive strip 710 and a second adhesive strip 720. Along the thickness direction (Z-axis direction) of the terminal device 1000, the portion of the adhesive layer 700 covering the end of the first cavity sidewall M1 facing away from the middle plate 570 is the first adhesive strip 710. The portion of the adhesive layer 700 covering the end of the second cavity sidewall M2 facing away from the middle plate 570 is the second adhesive strip 720. Essentially, the first adhesive strip 710 is sandwiched between the cover and the first cavity sidewall M1, and the second adhesive strip 720 is sandwiched between the cover and the second cavity sidewall M2. It is understood that the deformable part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1 and the second cavity sidewall M2. In order to avoid the deformable part 40 of the sealing part 100, there is a first gap N1 between the first adhesive strip 710 and the deformable part 40 of the sealing part 100; and there is a second gap N2 between the second adhesive strip 720 and the deformable part 40 of the sealing part 100.

[0146] It should be noted that the width of the first gap N1 depends on the width of the first adhesive strip 710, the thickness of the deformable part 40, and the degree of deformation of the deformable part 40 during the interference fit. Since the degree of deformation of the deformable part 40 during the interference fit cannot be precisely controlled, the width of the first gap N1 between the first adhesive strip 710 and the deformable part 40 of the sealing part 100 cannot be precisely controlled. When the width of the first gap N1 is sufficiently small, the airflow generated when the speaker 200 is operating will hardly leak from the first gap N1, and the audio effect of the speaker 200 will hardly be affected. When the width of the first gap N1 is wider, the airflow generated when the speaker 200 is operating may leak from the first gap N1, thereby reducing the audio effect of the speaker 200. Similarly, the width of the second gap N2 between the second adhesive strip 720 and the deformable part 40 of the sealing part 100 cannot be precisely controlled. When the width of the second gap N2 is sufficiently small, the airflow generated when the speaker 200 is operating will hardly leak from the second gap N2, and the audio effect of the speaker 200 will hardly be affected. When the width of the second gap N2 is too wide, the airflow generated when the speaker 200 is working may leak from the second gap N2, thereby reducing the audio performance of the speaker 200.

[0147] In this embodiment, the cover, the sealing part 100, and the functional cavity form the rear cavity of the speaker 200, and the rear cavity is an open rear cavity. The rear cavity is in a sealed state (a certain process tolerance is allowed).

[0148] It is understandable that by designing an open rear cavity for the speaker 200, the space between the cover and the middle frame 550 can be fully utilized, expanding the rear cavity space of the speaker 200 and thus improving the audio performance of the speaker 200. Compared to using a closed rear cavity, this embodiment does not require a housing for the speaker 200, saving internal space in the terminal device 1000 and improving the utilization rate of the internal space of the terminal device 1000.

[0149] The cover, sealing part 100, and functional cavity together define an open rear cavity. Since the rear cavity is sealed, the airflow generated by gas fluctuations when the speaker 200 operates is confined to the rear cavity. The airflow only causes vibration in the portion of the cover surrounding the rear cavity, thus reducing the area affected by the airflow and consequently reducing the vibration range of the cover. Simultaneously, the deformation part 40 of the sealing part 100 is made of an elastic material and has an interference fit with the cover, thus buffering the vibration of the cover. In particular, the battery 600 provides relatively weak support to the cover, and the airflow is confined to the rear cavity, preventing airflow between the battery 600 and the cover, thereby avoiding significant vibration in the portion of the cover opposite the battery 600. Furthermore, when the portion of the cover opposite the battery 600 is pressed, the air pressure between the cover and the battery 600 changes, resulting in airflow between them. The rear cavity is sealed, and the airflow between the cover and the battery 600 will not enter the rear cavity and act on the diaphragm of the core 210. Therefore, the normal operation of the speaker 200 can be guaranteed, and the audio effect of the speaker 200 can be guaranteed.

[0150] Please continue reading. Figure 10 Along the width direction (Y-axis direction) of the terminal device 1000, the width of the second plate 320 of the circuit board 300 is smaller than the length and width of the first plate 310 and the length and width of the third plate 330. The sealing part 100 is sleeved on the second plate 320 of the circuit board 300. Therefore, the length of the sealing part 100 can be set to be shorter. On the one hand, it is convenient for the processing and production of the sealing part 100. On the other hand, it can also ensure the sealing effect of the sealing part 100 and avoid the sealing part 100 being too long, which would cause the elasticity of the sealing part 100 to be too large, thereby reducing the sealing effect of the sealing part 100.

[0151] Please continue reading. Figure 11 In this embodiment, along the thickness direction (Z-axis direction) of the terminal device 1000, the first portion 410 of the display screen 400 is located on the side of the middle plate 570 facing away from the back plate 540. The periphery of the first portion 410 of the display screen 400 is connected to the frame 560.

[0152] It should be noted that in other embodiments, the first portion 410 of the display screen 400 can also serve as a cover, covering the receiving cavity. Along the thickness direction (Z-axis direction) of the terminal device 1000, the front cavity of the speaker 200 can also be formed between the middle plate 570 and the diaphragm of the core 210, or the front cavity of the speaker 200 can be formed between the first portion 410 of the display screen 400 and the diaphragm of the core 210, i.e., the front cavity of the speaker 200 is an open front cavity. The circuit board 300 may also omit the first notch 340 and the second notch 350, and the sealing portion 100 can be directly sleeved on the circuit board 300. When the sealing portion 100 does not include the deformation form 40, the first adhesive strip 710 is directly spaced opposite to the first mounting body 10 of the sealing portion 100, and the second adhesive strip 720 is directly spaced opposite to the second mounting body 20.

[0153] Please refer to the following: Figure 12 and Figure 13 , Figure 12 This is an assembly diagram of a portion of the structure of the terminal device 1000 according to the second embodiment of this application; Figure 13 for Figure 12 A schematic diagram of the structure of the sealing part 100 shown.

[0154] The second embodiment of this application provides a terminal device 1000. The difference between this embodiment and the first embodiment described above is that the structure of the deformable variant 40 is different.

[0155] In this embodiment, the structures of the middle frame 550, circuit board 300, and speaker 200 can all refer to the first embodiment described above. Further details will not be elaborated upon here.

[0156] In this embodiment, the structures of the first mounting body 10, the second mounting body 20, and the connecting body 30 of the sealing part 100 can all refer to the first embodiment described above. The arrangement of the abutment body 50 can also refer to the first embodiment described above. Further details will not be elaborated here.

[0157] In this embodiment, the deformation type 40 includes a first rib 41, a second rib 42, and a third rib 43. The first rib 41 surrounds the peripheral side surface 103 of the sealing portion 100. The second ribs 42 are all located at the connection between the first side surface 1031 and the second side surface 1032. Along the width direction of the sealing portion 100, the second rib 42 is connected to one side of the first rib 41 in the width direction. The second rib 42 extends along the width direction of the sealing portion 100. The third rib 43 is located at the connection between the second side surface 1032 and the third side surface 1033. The third rib 43 is connected to one side of the first rib 41 in the width direction. The third rib 43 extends along the width direction of the sealing portion 100. In this embodiment, there are two second ribs 42. The two second ribs 42 are respectively connected to opposite sides of the first rib 41 in the width direction. There are two third ribs 43. The two third ribs 43 are respectively connected to opposite sides of the first rib 41 in the width direction. In other embodiments, there may be only one second rib 42 and one third rib 43.

[0158] Please see Figure 12 In this embodiment, the way the sealing part 100 is sleeved on the circuit board 300 can be referred to the first embodiment described above. The way the battery 600, circuit board 300, sealing part 100, speaker 200, back plate 540, and the first part 410 of the display screen 400 are mounted on the middle frame 550 can also be referred to the first embodiment described above. Further details will not be elaborated here.

[0159] In this embodiment, the deformable form 40 of the sealing portion 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first rib 41 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, the cover body, and the bottom wall of the first chamber 581. The second rib 42 is interference-fitted with the first cavity sidewall M1 and the cover body. Along the length of the sealing portion 100, the second rib 42 is spaced apart from the first adhesive strip 710. The third rib 43 is interference-fitted with the second cavity sidewall M2 and the cover body. Along the length of the sealing portion 100, the third rib 43 is spaced apart from the second adhesive strip 720. It can be understood that there is a strip-shaped first gap N1 and a strip-shaped second gap N2 between the first adhesive strip 710 and the deformable form 40 of the sealing portion 100.

[0160] It is understandable that the peripheral side 103 of the sealing part 100 is provided with a first rib 41, and the first rib 41 is strip-shaped. Therefore, the first rib 41 is easy to deform and is interference-fitted with the first cavity side wall M1, the second cavity side wall M2, the cover body and the cavity bottom wall of the first cavity 581.

[0161] By further providing a second rib 42 at the connection between the first side 1031 and the second side 1032 of the sealing part 100, and a third rib 43 at the connection between the second side 1032 and the third side 1033, a strip-shaped first gap N1 is formed between the second rib 42 and the first adhesive strip 710, and a strip-shaped second gap N2 is formed between the third rib 43 and the second adhesive strip 720, thus increasing the length of the first gap N1 and the second gap N2, increasing the difficulty of airflow escaping to the outside of the rear cavity, preventing airflow from easily escaping from the rear cavity, reducing the sealing performance of the rear cavity, and thus reducing the audio effect of the speaker 200.

[0162] Please refer to the following: Figure 14 and Figure 15 , Figure 14 This is an assembly diagram of a portion of the structure of the terminal device 1000 according to the third embodiment of this application; Figure 15 for Figure 14 A schematic diagram of the structure of the sealing part 100 shown.

[0163] The third embodiment of this application provides a terminal device 1000. The difference between this embodiment and the first embodiment described above is that the structure of the deformable variant 40 is different.

[0164] In this embodiment, the structures of the middle frame 550, circuit board 300, and speaker 200 can all refer to the first embodiment described above. Further details will not be elaborated upon here.

[0165] In this embodiment, the structures of the first mounting body 10, the second mounting body 20, and the connecting body 30 of the sealing part 100 can all refer to the first embodiment described above. The arrangement of the abutment body 50 can also refer to the first embodiment described above. Further details will not be elaborated here.

[0166] In this embodiment, the deformable form 40 includes a first rib 41, a second rib 42, and a third rib 43. The first rib 41 surrounds the peripheral side 103, and the second rib 42 is connected to the first mounting body 10. The second rib 42 protrudes from the second side 1032. One end of the second rib 42 is connected to the first rib 41, and the other end of the second rib 42 forms a first opening spaced apart from the first rib 41. The orientation of the first opening is the same as the orientation of the first side 1031. One end of the third rib 43 is connected to the second mounting body 20. The third rib 43 protrudes from the second side 1032. One end of the third rib 43 is connected to the first rib 41, and the other end of the third rib 43 forms a second opening spaced apart from the first rib 41. The orientation of the second opening is the same as the orientation of the third side 1033.

[0167] Please see Figure 14In this embodiment, the way the sealing part 100 is sleeved on the circuit board 300 can be referred to the first embodiment described above. The way the battery 600, circuit board 300, sealing part 100, speaker 200, back plate 540, and the first part 410 of the display screen 400 are mounted on the middle frame 550 can also be referred to the first embodiment described above. Further details will not be elaborated here.

[0168] In this embodiment, the deformable part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first rib 41 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, the cover body, and the bottom wall of the first chamber 581. The second rib 42 is interference-fitted with the first cavity sidewall M1 and the cover body. The third rib 43 is interference-fitted with the second cavity sidewall M2 and the cover body. The first opening faces the first adhesive strip 710. The first adhesive strip 710, the first rib 41, and the second rib 42 form a first glue-filling cavity O1. The second opening faces the second adhesive strip 720. The second adhesive strip 720, the first rib 41, and the third rib 43 form a second glue-filling cavity O2.

[0169] In this embodiment, the terminal device 1000 further includes a first colloid 730 and a second colloid 740. The first filling cavity O1 is filled with the first colloid 730, and the first colloid 730 is connected to the periphery of the first filling cavity O1. The second filling cavity O2 is filled with the second colloid 740, and the second colloid 740 is connected to the periphery of the second filling cavity O2.

[0170] It should be noted that a dispensing groove can be provided in the first filling cavity O1. The dispensing groove can be located in the sealing part 100 or the side wall M1 of the first cavity, so that after the liquid adhesive is filled in the dispensing groove, it can overflow from the dispensing groove and fill the first filling cavity O1. After the liquid adhesive in the first filling cavity O1 cures, it forms a first colloid 730. Similarly, a dispensing groove can be provided in the second filling cavity O2. The dispensing groove can be located in the sealing part 100 or the side wall M2 of the second cavity, so that after the liquid adhesive is filled in the dispensing groove, it can overflow from the dispensing groove and fill the second filling cavity O2. After the liquid adhesive in the second filling cavity O2 cures, it forms a second colloid 740.

[0171] Understandably, by applying adhesive to the first filling cavity O1 to form a first adhesive 730 and filling the first filling cavity O1 with the first adhesive 730, the first adhesive 730 can seal the connection between the first adhesive strip 710 and the sealing part 100. When the speaker 200 is working, the airflow generated passes through the gap between the first adhesive strip 710 and the first rib 41, and the airflow is obstructed by the first adhesive 730, preventing it from escaping to the outside of the rear cavity through the gap between the first adhesive strip 710 and the second rib 42. Therefore, the sealing of the rear cavity can be guaranteed, ensuring the audio effect of the speaker 200. Similarly, by applying adhesive to the second filling cavity O2 to form a second adhesive 740 and filling the second filling cavity O2 with the second adhesive 740, the second adhesive 740 can seal the connection between the second adhesive strip 720 and the sealing part 100. When the speaker 200 operates, the airflow generated passes through the gap between the second adhesive strip 720 and the first rib 41. The airflow is obstructed by the second adhesive 740 and cannot continue to escape to the outside of the rear cavity through the gap between the second adhesive strip 720 and the third rib 43. Therefore, the sealing of the rear cavity can be guaranteed, ensuring the audio performance of the speaker 200.

[0172] Please see Figure 16 , Figure 16 This is a partial assembly diagram of a terminal device 1000 according to the fourth embodiment of this application. The fourth embodiment of this application provides a terminal device 1000. The difference between this embodiment and the first embodiment described above is that the terminal device 1000 further includes a first barrier layer 750 and a second barrier layer 760.

[0173] In this embodiment, the structures of the middle frame 550, circuit board 300, and speaker 200 can all refer to the first embodiment described above. Further details will not be elaborated upon here.

[0174] In this embodiment, the structures of the first mounting body 10, the second mounting body 20, and the connecting body 30 of the sealing part 100 can all refer to the first embodiment described above. The arrangement of the deformable body 40 and the abutment body 50 can also refer to the first embodiment described above. Further details will not be elaborated here.

[0175] Please see Figure 16 In this embodiment, the way the sealing part 100 is sleeved on the circuit board 300 can be referred to the first embodiment described above. The way the battery 600, circuit board 300, sealing part 100, speaker 200, back plate 540, and the first part 410 of the display screen 400 are mounted on the middle frame 550 can also be referred to the first embodiment described above. Further details will not be elaborated here.

[0176] In this embodiment, the terminal device 1000 includes a first blocking layer 750 and a second blocking layer 760. One end of the first blocking layer 750 is connected to a first adhesive strip 710, and the other end is connected to a first mounting body 10. Specifically, the other end of the first blocking layer 750 is connected to a second side surface 1032 of the sealing portion 100. Along the width direction of the sealing portion 100, the first blocking layer 750 is spaced apart from the deformable shape 40. One end of the second blocking layer 760 is connected to a second adhesive strip 720, and the other end is connected to a second mounting body 20. Specifically, the other end of the second blocking layer 760 is connected to a second side surface 1032 of the sealing portion 100. Along the width direction of the sealing portion 100, the second blocking layer 760 is spaced apart from the deformable shape 40. In this embodiment, there are two first blocking layers 750. Along the width direction of the sealing portion 100, the two first blocking layers 750 are located on opposite sides of the deformable shape 40. There are two second blocking layers 760. Along the width direction of the sealing portion 100, two second barrier layers 760 are respectively located on opposite sides of the deformed portion 40. In other embodiments, the number of first barrier layers 750 may also be one, and the number of second barrier layers 760 may also be one.

[0177] It is understood that, in this embodiment, the first path L1 for the airflow generated when the speaker 200 is operating to escape to the outside of the rear cavity is as follows: the airflow passes through the gap between the first blocking layer 750 and the deformable shape 40 near the inside of the rear cavity, reaches the first gap N1 between the first adhesive strip 710 and the deformable shape 40, and then passes through the gap between the first blocking layer 750 and the deformable shape 40 near the outside of the rear cavity to reach the outside of the rear cavity. The second path L2 for the airflow generated when the speaker 200 is operating to escape to the outside of the rear cavity is as follows: the airflow passes through the gap between the second blocking layer 760 and the deformable shape 40 near the inside of the rear cavity, reaches the second gap N2 between the second adhesive strip 720 and the deformable shape 40, and then passes through the gap between the second blocking layer 760 and the deformable shape 40 near the outside of the rear cavity to reach the outside of the rear cavity.

[0178] It should be noted that, Figure 16 The double-dotted lines are only used to describe the first path L1 and the second path L2, and do not constitute a specific limitation on the structure of the terminal device 1000 in this embodiment.

[0179] Understandably, by providing a first blocking layer 750, which is connected between the first adhesive strip 710 and the first mounting body 10, and spaced apart from the deformation 40 of the sealing portion 100, the airflow generated when the speaker 200 is operating needs to pass through a tortuous first path L1 before escaping to the outside of the rear cavity. Furthermore, the relatively long length of the first path L1 increases the difficulty of airflow escaping to the outside of the rear cavity, thereby improving the sealing of the rear cavity, ensuring the audio performance of the speaker 200, and preventing airflow from easily escaping from the rear cavity, thus reducing the audio performance of the speaker 200. Similarly, by providing a second blocking layer 760, which is connected between the second adhesive strip 720 and the second mounting body 20, and spaced apart from the deformation 40 of the sealing portion 100, the airflow generated when the speaker 200 is operating needs to pass through a tortuous second path L2 before escaping to the outside of the rear cavity. In addition, the second path L2 is longer, which increases the difficulty of airflow escaping to the outside of the rear cavity, thereby improving the sealing of the rear cavity and ensuring the audio performance of the speaker 200.

[0180] Please see Figure 17 , Figure 17 This is an assembly diagram of a portion of the structure of a terminal device 1000 according to the fifth embodiment of this application. The fifth embodiment of this application provides a terminal device 1000. The distinguishing feature of this embodiment compared to any of the above embodiments is that the sealing portion 100 is sleeved on the first plate body 310 of the circuit board 300.

[0181] In this embodiment, the structure of the speaker 200 can refer to the first embodiment described above. Further details will not be provided here.

[0182] In this embodiment, the middle frame 550 includes a side frame 560, a middle plate 570, and a retaining rib 590. The specific structure of the side frame 560, the middle plate 570, and the retaining rib 590, as well as the connection method of the side frame 560, the middle plate 570, and the retaining rib 590, can all refer to the first embodiment described above.

[0183] In this embodiment, the first chamber 581 includes a first chamber sidewall M1 and a second chamber sidewall M2 disposed opposite to each other. Specifically, along the length direction (X-axis direction) of the middle frame 550, the two opposite chamber sidewalls of the first sub-cavity 5811 are the first chamber sidewall M1 and the second chamber sidewall M2, respectively. The first chamber sidewall M1 is specifically formed by the frame 560. The second chamber sidewall M2 is specifically formed by the first rib 591.

[0184] In other embodiments, the first cavity sidewall M1 may be formed by the first rib 591, and the second cavity sidewall M2 may be formed by the frame 560.

[0185] A first limiting groove 574 is formed on the side wall M1 of the first cavity. The first limiting groove 574 is specifically formed between two first protrusions 575 protruding from the side wall M1 of the first cavity. A second limiting groove 576 is formed on the side wall M2 of the second cavity. The second limiting groove 576 is specifically formed between two second protrusions 577 protruding from the side wall M2 of the second cavity. Along the length direction (X-axis direction) of the middle frame 550, the first limiting groove 574 and the second limiting groove 576 are arranged opposite to each other.

[0186] In other embodiments, the first cavity sidewall M1 may not be provided with the first limiting groove 574, and the second cavity sidewall M2 may not be provided with the second limiting groove 576.

[0187] In this embodiment, the circuit board 300 includes a first board body 310, a second board body 320, and a third board body 330. The connection methods of the first board body 310, the second board body 320, and the third board body 330 can all refer to the first embodiment described above. Further details are omitted here.

[0188] In this embodiment, the circuit board 300 is provided with a first notch 340 and a second notch 350. Specifically, along the length direction of the circuit board 300, the first notch 340 and the second notch 350 are symmetrically arranged on opposite sides of the first plate body 310. Along the thickness direction of the circuit board 300, both the first notch 340 and the second notch 350 penetrate the two surfaces of the first plate body 310 in the thickness direction.

[0189] In this embodiment, the structure of the sealing part 100 can refer to any of the above embodiments. The assembly method of the sealing part 100 and the first plate 310 of the circuit board 300 can refer to the assembly method of the sealing part 100 and the second plate 320 of the circuit board 300 in the first embodiment described above. Further details will not be elaborated here.

[0190] Please continue reading. Figure 17 In this embodiment, the battery 600 is housed in the second chamber 582 of the middle frame 550. The circuit board 300, the sealing part 100, and the speaker 200 are all housed in the first chamber 581 of the middle frame 550. Specifically, the first plate 310 of the circuit board 300 is located in the first sub-cavity 5811. The second plate 320 is located in the second sub-cavity 5812. The third plate 330 is located in the third sub-cavity 5813. The two first protrusions 575 of the first cavity sidewall M1 are both located in the first notch 340. The two second protrusions 577 of the second cavity sidewall M2 are both located in the second notch 350.

[0191] The sealing part 100 is sealingly connected to the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first mounting body 10 of the sealing part 100 is limited to the first limiting groove 574. The second mounting body 20 is limited to the second limiting groove 576. The deformable part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. The sealing part 100 divides the first chamber 581 into a functional cavity and a non-functional cavity. The functional cavity and the non-functional cavity are separated by the sealing part 100.

[0192] The speaker 200 is located within the functional cavity. The speaker 200 is connected to the mid-frame 550. Specifically, the speaker 200 is located in the first sub-cavity 5811. The speaker 200 is spaced apart from the circuit board 300. The bracket 220 is connected to the mid-frame 550. The sound guide channel 221 of the bracket 220 is located between the core 210 and the frame 560. The sound guide channel 221 faces the sound outlet 501 of the frame 560. The sound guide channel 221 communicates with the sound outlet 501 of the frame 560.

[0193] A backplate 540 forms a cover that covers the receiving cavity 580. The periphery of the cover is sealed to the frame 560. The cover is sealed to the sealing part 100. The cover is sealed to the periphery wall of the functional cavity. Specifically, the terminal device 1000 also includes an adhesive layer 700. The adhesive layer 700 covers the first surface 561 of the frame 560. Along the thickness direction (Z-axis direction) of the terminal device 1000, the adhesive layer 700 also covers the end of the periphery wall of the functional cavity facing away from the middle plate 570. The adhesive layer 700 adhesively connects the cover to the frame 560. The adhesive layer 700 also adhesively connects the cover to the periphery wall of the functional cavity.

[0194] The adhesive layer 700 includes a first adhesive strip 710 and a second adhesive strip 720. Along the thickness direction (Z-axis direction) of the terminal device 1000, the portion of the adhesive layer 700 covering the end of the first cavity sidewall M1 facing away from the middle plate 570 is the first adhesive strip 710. The portion of the adhesive layer 700 covering the end of the second cavity sidewall M2 facing away from the middle plate 570 is the second adhesive strip 720. Essentially, the first adhesive strip 710 is sandwiched between the cover and the first cavity sidewall M1, and the second adhesive strip 720 is sandwiched between the cover and the second cavity sidewall M2.

[0195] It should be noted that, in this embodiment, the structure of the deformable part 40 of the sealing part 100 and the positional relationship between the deformable part 40 and the first adhesive strip 710 and the second adhesive strip 720 can refer to any of the above embodiments, and will not be elaborated further here.

[0196] In this embodiment, the cover, the sealing part 100, and the functional cavity form the rear cavity of the speaker 200, and the rear cavity is an open rear cavity. The rear cavity is in a sealed state (a certain process tolerance is allowed).

[0197] In this embodiment, the assembly method of the display screen 400 and the middle frame 550 can refer to any of the above embodiments, and will not be described in detail here.

[0198] It is understandable that by fitting the sealing part 100 onto the first plate body 310 of the circuit board 300, the process of fitting the sealing part 100 onto the circuit board 300 can be simplified, and in particular, the sealing effect of the sealing part 100 can be guaranteed, avoiding large elastic deformation of the sealing part 100 during the process of fitting it onto the circuit board 300, which would reduce the elasticity of the sealing part 100 and thus reduce the sealing effect of the sealing part 100.

[0199] Please see Figure 18 , Figure 18 This is an assembly diagram of a portion of the structure of a terminal device 1000 according to the sixth embodiment of this application. The sixth embodiment of this application provides a terminal device 1000. The distinguishing feature of this embodiment compared to any of the above embodiments is that the sealing portion 100 is sleeved on the third plate body 330 of the circuit board 300.

[0200] In this embodiment, the structure of the speaker 200 can refer to the first embodiment described above. Further details will not be provided here.

[0201] In this embodiment, the middle frame 550 includes a side frame 560, a middle plate 570, and a retaining rib 590. The specific structure of the side frame 560, the middle plate 570, and the retaining rib 590, as well as the connection method of the side frame 560, the middle plate 570, and the retaining rib 590, can all refer to the first embodiment described above.

[0202] In this embodiment, the first chamber 581 includes a first chamber sidewall M1 and a second chamber sidewall M2 disposed opposite to each other. Specifically, along the length direction (X-axis direction) of the middle frame 550, the two opposite chamber sidewalls of the third sub-chamber 5813 are the first chamber sidewall M1 and the second chamber sidewall M2, respectively. The first chamber sidewall M1 is specifically formed by the frame 560. The second chamber sidewall M2 is specifically formed by the third rib 593.

[0203] In other embodiments, the first cavity sidewall M1 may be formed by the third rib 593, and the second cavity sidewall M2 may be formed by the frame 560.

[0204] A first limiting groove 574 is formed on the side wall M1 of the first cavity. The first limiting groove 574 is specifically formed between two first protrusions 575 protruding from the side wall M1 of the first cavity. A second limiting groove 576 is formed on the side wall M2 of the second cavity. The second limiting groove 576 is specifically formed between two second protrusions 577 protruding from the side wall M2 of the second cavity. Along the length direction (X-axis direction) of the middle frame 550, the first limiting groove 574 and the second limiting groove 576 are arranged opposite to each other.

[0205] In other embodiments, the first cavity sidewall M1 may not be provided with the first limiting groove 574, and the second cavity sidewall M2 may not be provided with the second limiting groove 576.

[0206] In this embodiment, the circuit board 300 includes a first board body 310, a second board body 320, and a third board body 330. The connection methods of the first board body 310, the second board body 320, and the third board body 330 can all refer to the first embodiment described above. Further details are omitted here.

[0207] In this embodiment, the circuit board 300 is provided with a first notch 340 and a second notch 350. Specifically, along the length direction of the circuit board 300, the first notch 340 and the second notch 350 are symmetrically arranged on opposite sides of the third plate 330. Along the thickness direction of the circuit board 300, both the first notch 340 and the second notch 350 penetrate the two surfaces of the third plate 330 in the thickness direction.

[0208] In this embodiment, the structure of the sealing part 100 can refer to any of the above embodiments. The assembly method of the sealing part 100 and the third plate 330 of the circuit board 300 can refer to the assembly method of the sealing part 100 and the second plate 320 of the circuit board 300 in the first embodiment. Further details will not be provided here.

[0209] Please continue reading. Figure 18 In this embodiment, the battery 600 is housed in the second chamber 582 of the middle frame 550. The circuit board 300, the sealing part 100, and the speaker 200 are all housed in the first chamber 581 of the middle frame 550. Specifically, the first plate 310 of the circuit board 300 is located in the first sub-cavity 5811. The second plate 320 is located in the second sub-cavity 5812. The third plate 330 is located in the third sub-cavity 5813. The two first protrusions 575 of the first cavity sidewall M1 are both located in the first notch 340. The two second protrusions 577 of the second cavity sidewall M2 are both located in the second notch 350.

[0210] The sealing part 100 is sealingly connected to the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first mounting body 10 of the sealing part 100 is limited to the first limiting groove 574. The first mounting body 10 is sealingly connected to the first cavity sidewall M1. The second mounting body 20 is limited to the second limiting groove 576. The second mounting body 20 is sealingly connected to the second cavity sidewall M2. The connecting body 30 is sealingly connected to the bottom wall of the first chamber 581. The deformable part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the receiving cavity 580. The sealing part 100 divides the first chamber 581 into a functional cavity and a non-functional cavity. The functional cavity and the non-functional cavity are separated by the sealing part 100.

[0211] The speaker 200 is located within the functional cavity. The speaker 200 is connected to the mid-frame 550. Specifically, the speaker 200 is located in the first sub-cavity 5811. The speaker 200 is spaced apart from the circuit board 300. The bracket 220 is connected to the mid-frame 550. The sound guide channel 221 of the bracket 220 is located between the core 210 and the frame 560. The sound guide channel 221 faces the sound outlet 501 of the frame 560. The sound guide channel 221 communicates with the sound outlet 501 of the frame 560.

[0212] A backplate 540 forms a cover that covers the receiving cavity 580. The periphery of the cover is sealed to the frame 560. The cover is sealed to the sealing part 100. The cover is sealed to the periphery wall of the functional cavity. Specifically, the terminal device 1000 also includes an adhesive layer 700. The adhesive layer 700 covers the first surface 561 of the frame 560. Along the thickness direction (Z-axis direction) of the terminal device 1000, the adhesive layer 700 also covers the end of the periphery wall of the functional cavity facing away from the middle plate 570. The adhesive layer 700 adhesively connects the cover to the frame 560. The adhesive layer 700 also adhesively connects the cover to the periphery wall of the functional cavity.

[0213] The adhesive layer 700 includes a first adhesive strip 710 and a second adhesive strip 720. Along the thickness direction (Z-axis direction) of the terminal device 1000, the portion of the adhesive layer 700 covering the end of the first cavity sidewall M1 facing away from the middle plate 570 is the first adhesive strip 710. The portion of the adhesive layer 700 covering the end of the second cavity sidewall M2 facing away from the middle plate 570 is the second adhesive strip 720. Essentially, the first adhesive strip 710 is sandwiched between the cover and the first cavity sidewall M1, and the second adhesive strip 720 is sandwiched between the cover and the second cavity sidewall M2.

[0214] It should be noted that, in this embodiment, the structure of the deformable part 40 of the sealing part 100 and the positional relationship between the deformable part 40 and the first adhesive strip 710 and the second adhesive strip 720 can refer to any of the above embodiments, and will not be elaborated further here.

[0215] In this embodiment, the cover, the sealing part 100, and the functional cavity form the rear cavity of the speaker 200, and the rear cavity is an open rear cavity. The rear cavity is in a sealed state (a certain process tolerance is allowed).

[0216] In this embodiment, the assembly method of the display screen 400 and the middle frame 550 can refer to any of the above embodiments, and will not be described in detail here.

[0217] Understandably, the cover, the sealing part 100, and the functional cavity together define an open rear cavity. By fitting the sealing part 100 onto the third plate 330 of the circuit board 300, the rear cavity of the speaker 200 includes a first sub-cavity 5811, a second sub-cavity 5812, and a portion of a third sub-cavity 5813. The rear cavity of the speaker 200 has a larger space, and therefore, the speaker 200 has better audio performance.

[0218] Please see Figure 19 , Figure 19 This is an assembly diagram of a portion of the structure of a terminal device 1000 according to the seventh embodiment of this application. The seventh embodiment of this application provides a terminal device 1000. The distinguishing features of this embodiment compared to any of the above embodiments are: the structure of the middle frame 550 is different; the structure of the circuit board 300 is different.

[0219] In this embodiment, the middle frame 550 includes a side frame 560, a middle plate 570, and a retaining rib 590. The specific structure of the side frame 560 and the middle plate 570, as well as the connection method between the side frame 560 and the middle plate 570, can be referred to the first embodiment described above. Further details will not be elaborated here.

[0220] In this embodiment, a baffle 590 is protruding from the first surface 571 of the middle plate 570. This corresponds to the baffle 590 protruding from the bottom wall of the receiving cavity 580. The baffle 590 divides the receiving cavity 580 into a first chamber 581 and a second chamber 582. The first chamber 581 and the second chamber 582 are separated by the baffle 590. The first chamber 581 is used to accommodate the circuit board 300 and the speaker 200. The second chamber 582 is used to accommodate the battery 600. The baffle 590 can be a continuous strip structure or an intermittent strip structure.

[0221] Specifically, the retaining rib 590 includes a first protruding rib 591 and a second protruding rib 592. Both the first protruding rib 591 and the second protruding rib 592 extend along the width direction of the middle frame 550. The opposite ends of the first protruding rib 591 and the second protruding rib 592 are connected to the inner peripheral surface 563 of the frame 560. Along the length direction of the middle frame 550, the first retaining rib 590 and the second retaining rib 590 are spaced apart from each other. The first chamber 581 includes a first sub-chamber 5811 and a second sub-chamber 5812. Along the length direction of the middle frame 550, the first sub-chamber 5811, the second chamber 582, and the second sub-chamber 5812 are arranged sequentially. It can be understood that the second chamber 582 is separated from the first sub-chamber 5811 by the first protruding rib 591. The second chamber 582 is separated from the second sub-chamber 5812 by the second protruding rib 592.

[0222] In this embodiment, the first chamber 581 includes a first chamber sidewall M1 and a second chamber sidewall M2 disposed opposite to each other. Specifically, along the width direction of the middle frame 550, the two opposite chamber sidewalls of the first sub-cavity 5811 are the first chamber sidewall M1 and the second chamber sidewall M2, respectively. The first chamber sidewall M1 is specifically formed by the frame 560. The second chamber sidewall M2 is specifically formed by the frame 560.

[0223] In this embodiment, the two oppositely arranged sidewalls of the first chamber 581 are respectively formed with a first limiting groove 574 and a second limiting groove 576. Specifically, the first limiting groove 574 and the second limiting groove 576 are arranged opposite to each other along the width direction of the middle frame 550.

[0224] A first limiting groove 574 is formed on the side wall M1 of the first cavity. The first limiting groove 574 is specifically formed between two first protrusions 575 protruding from the side wall M1 of the first cavity. A second limiting groove 576 is formed on the side wall M2 of the second cavity. The second limiting groove 576 is specifically formed between two second protrusions 577 protruding from the side wall M2 of the second cavity. Along the width direction of the middle frame 550, the first limiting groove 574 and the second limiting groove 576 are arranged opposite to each other.

[0225] In other embodiments, the first cavity sidewall M1 may not be provided with the first limiting groove 574, and the second cavity sidewall M2 may not be provided with the second limiting groove 576.

[0226] Please continue reading. Figure 19 In this embodiment, the circuit board 300 includes a first board body 310 and a second board body 320. The first board body 310 and the second board body 320 are two independent boards. The first board body 310 is the main board, and the second board body 320 is the secondary board. In other embodiments, the first board body 310 may be the secondary board, and the second board body 320 may be the main board.

[0227] In this embodiment, the circuit board 300 is provided with a first notch 340 and a second notch 350. Specifically, along the width direction of the circuit board 300, the first notch 340 and the second notch 350 are symmetrically arranged on opposite sides of the first plate body 310. Along the thickness direction of the circuit board 300, both the first notch 340 and the second notch 350 penetrate both surfaces of the first plate body 310 in the thickness direction. In other embodiments, the circuit board 300 may not have the first notch 340 and the second notch 350.

[0228] In this embodiment, the structure of the sealing part 100 can refer to any of the above embodiments. The assembly method of the sealing part 100 and the first plate 310 of the circuit board 300 can refer to the assembly method of the sealing part 100 and the second plate 320 of the circuit board 300 in the first embodiment described above. Further details will not be elaborated here.

[0229] Please continue reading. Figure 19In this embodiment, the battery 600 is housed in the second chamber 582 of the middle frame 550. The circuit board 300, the sealing portion 100, and the speaker 200 are all housed in the first chamber 581 of the middle frame 550. Specifically, the first plate body 310 of the circuit board 300 is located in the first sub-cavity 5811. The second plate body 320 is located in the second sub-cavity 5812. The two first protrusions 575 of the first cavity sidewall M1 are both located in the first notch 340. The two second protrusions 577 of the second cavity sidewall M2 are both located in the second notch 350.

[0230] The sealing part 100 is sealingly connected to the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. Specifically, the first mounting body 10 of the sealing part 100 is limited to the first limiting groove 574. The second mounting body 20 is limited to the second limiting groove 576. The connecting body 30 is sealingly connected to the bottom wall of the receiving cavity 580. The deformable part 40 of the sealing part 100 is interference-fitted with the first cavity sidewall M1, the second cavity sidewall M2, and the bottom wall of the first chamber 581. The sealing part 100 divides the first chamber 581 into a functional cavity and a non-functional cavity. The functional cavity and the non-functional cavity are separated by the sealing part 100. The functional cavity includes a portion of the first sub-cavity 5811. The non-functional cavity includes a second sub-cavity 5812 and another portion of the first sub-cavity 5811. It can be understood that a portion of the first cavity sidewall M1 forms a part of the cavity sidewall of the functional cavity, and a portion of the second cavity sidewall M2 forms another part of the cavity sidewall of the functional cavity. The periphery of the functional cavity is formed by a portion of the border 560.

[0231] The speaker 200 is located within the functional cavity. The speaker 200 is connected to the mid-frame 550. Specifically, the speaker 200 is located in the first sub-cavity 5811. The speaker 200 is spaced apart from the circuit board 300. The bracket 220 is connected to the mid-frame 550. The sound guide channel 221 of the bracket 220 is located between the core 210 and the frame 560. The sound guide channel 221 faces the sound outlet 501 of the frame 560. The sound guide channel 221 communicates with the sound outlet 501 of the frame 560.

[0232] A backplate 540 forms a cover that covers a receiving cavity 580. The periphery of the cover is sealed to a frame 560. The cover is sealed to a sealing part 100. The cover is sealed to the periphery wall of the functional cavity. Specifically, the terminal device 1000 also includes an adhesive layer 700. The adhesive layer 700 covers a first surface 561 of the frame 560. The adhesive layer 700 adhesively connects the cover to the frame 560. It can be understood that the adhesive layer 700 adhesively connects the cover and the periphery wall of the functional cavity.

[0233] The adhesive layer 700 includes a first adhesive strip 710 and a second adhesive strip 720. Along the thickness direction (Z-axis direction) of the terminal device 1000, the portion of the adhesive layer 700 covering the end of the first cavity sidewall M1 facing away from the middle plate 570 is the first adhesive strip 710. The portion of the adhesive layer 700 covering the end of the second cavity sidewall M2 facing away from the middle plate 570 is the second adhesive strip 720. Essentially, the first adhesive strip 710 is sandwiched between the cover and the first cavity sidewall M1, and the second adhesive strip 720 is sandwiched between the cover and the second cavity sidewall M2.

[0234] It should be noted that, in this embodiment, the structure of the deformable part 40 of the sealing part 100 and the positional relationship between the deformable part 40 and the first adhesive strip 710 and the second adhesive strip 720 can refer to any of the above embodiments, and will not be elaborated further here.

[0235] In this embodiment, the cover, the sealing part 100, and the functional cavity form the rear cavity of the speaker 200, and the rear cavity is an open rear cavity. The rear cavity is in a sealed state (a certain process tolerance is allowed).

[0236] In this embodiment, the assembly method of the display screen 400 and the middle frame 550 can refer to any of the above embodiments, and will not be described in detail here.

[0237] It is understandable that by designing an open rear cavity for the speaker 200, the space between the cover and the middle frame 550 can be fully utilized, expanding the rear cavity space of the speaker 200 and thus improving the audio performance of the speaker 200. Compared to using a closed rear cavity, this embodiment does not require a housing for the speaker 200, saving internal space in the terminal device 1000 and improving the utilization rate of the internal space of the terminal device 1000.

[0238] The cover, sealing part 100, and functional cavity together define an open rear cavity. Since the rear cavity is sealed, when the speaker 200 operates, causing gas fluctuations, the airflow is confined to the rear cavity. The airflow only causes vibration in the portion of the cover surrounding the rear cavity, thus reducing the area affected by the airflow and consequently reducing the vibration range of the cover. Simultaneously, the deformation part 40 of the sealing part 100 is made of an elastic material, and the deformation part 40 is interference-fitted with the cover, thus buffering the vibration of the cover. In particular, the battery 600 provides relatively weak support to the cover, and the airflow is confined to the rear cavity, preventing airflow between the battery 600 and the cover, thereby avoiding significant vibration in the portion of the cover opposite the battery 600. Furthermore, when the portion of the cover opposite the battery 600 is pressed, the air pressure between the cover and the battery 600 changes, meaning airflow is also generated between them. The rear cavity is sealed, and the airflow between the cover and the battery 600 will not enter the rear cavity and act on the diaphragm of the core 210. Therefore, the normal operation of the speaker 200 can be guaranteed, and the audio effect of the speaker 200 can be guaranteed.

[0239] It should be noted that in other embodiments, the first portion 410 of the display screen 400 can also serve as a cover, covering the receiving cavity. Along the thickness direction (Z-axis direction) of the terminal device 1000, the front cavity of the speaker 200 can also be formed between the middle plate 570 and the diaphragm of the core 210, or the front cavity of the speaker 200 can be formed between the first portion 410 of the display screen 400 and the diaphragm of the core 210, that is, the front cavity of the speaker 200 is an open front cavity. The circuit board 300 may also omit the first notch 340 and the second notch 350, and the sealing portion 100 can be directly sleeved on the circuit board 300.

[0240] Please see Figure 20 and Figure 21 , Figure 20 This is an assembly diagram of a portion of the structure of the terminal device 1000 according to the eighth embodiment of this application; Figure 21 for Figure 20 The diagram shows the structure of the barrier 770 of the terminal device 1000 assembled on the middle frame 550.

[0241] The eighth embodiment of this application provides a terminal device 1000. The difference between this embodiment and any of the above embodiments is that the middle plate 570 is provided with a first mounting hole 578 and a second mounting hole 579.

[0242] In this embodiment, the structures of the speaker 200, circuit board 300, and sealing part 100 can all refer to any of the above embodiments. Further details will not be elaborated here.

[0243] In this embodiment, the middle frame 550 includes a side frame 560 and a middle plate 570. The structure of the side frame 560 and the middle plate 570, as well as the connection method between the side frame 560 and the middle plate 570, can refer to any of the above embodiments. Further details are omitted here.

[0244] In this embodiment, the way the battery 600, circuit board 300, sealing part 100, speaker 200, back plate 540 and the first part of display screen 400 are mounted on the middle frame 550 can also refer to any of the above embodiments. Further details will not be elaborated here.

[0245] In this embodiment, the middle plate 570 is provided with a first mounting hole 578 and a second mounting hole 579. Along the thickness direction of the middle frame 550, the first mounting hole 578 penetrates the bottom wall of the functional cavity. The first mounting hole 578 communicates with the functional cavity. The second mounting hole 579 penetrates the bottom wall of the non-functional cavity. The second mounting hole 579 communicates with the non-functional cavity. Both the first mounting hole 578 and the second mounting hole 579 are used to mount functional modules. For example, the first mounting hole 578 is used to mount a fingerprint module; the second mounting hole 579 is used to mount a motor.

[0246] In this embodiment, the first portion 410 of the display screen 400 is located on the side of the middle plate 570 facing away from the back plate 540. The periphery of the first portion 410 of the display screen 400 is connected to the frame 560. Along the thickness direction of the terminal device 1000, there is a gap between the first portion 410 of the display screen 400 and the middle plate 570. The first mounting hole 578 of the middle plate 570 communicates with the gap, and the second mounting hole 579 communicates with the gap. It can be understood that the gap between the first portion 410 of the display screen 400 and the second surface 572 of the middle plate 570 is small, and the first mounting hole 578 of the middle plate 570 connects the rear cavity and the gap, so the spatial addition of the gap to the rear cavity is negligible.

[0247] In this embodiment, the terminal device 1000 further includes a barrier 770. The barrier 770 is located in the gap, that is, between the middle plate 570 and the first portion 410 of the display screen 400. The barrier 770 blocks the first mounting hole 578 and the second mounting hole 579, that is, the first mounting hole 578 and the second mounting hole 579 are not connected. For example, the barrier 770 is disposed around the first mounting hole 578 or the second mounting hole 579; or, the barrier 770 is located between the first mounting hole 578 and the second mounting hole 579, and the barrier 770 is connected to opposite sides in the width direction of the middle frame 550. Figure 21 The illustration only takes the barrier 770 surrounding the first mounting hole 578 as an example.

[0248] It is understandable that when the middle plate 570 is provided with a first mounting hole 578 and a second mounting hole 579, and the first mounting hole 578 communicates with the rear cavity and the second mounting hole 579 communicates with the non-functional cavity, by setting a barrier 770 in the gap between the middle plate 570 and the first part 410 of the display screen 400, and the barrier 770 blocks the first mounting hole 578 and the second mounting hole 579, the airflow generated when the speaker 200 is working can be prevented from entering the gap between the middle plate 570 and the first part 410 of the display screen 400 through the first mounting hole 578 from the rear cavity, and then entering the non-functional cavity through the second mounting hole 579. Therefore, the airflow generated when the speaker 200 is working can be prevented from reaching the space between the battery 600 and the back plate 540 through the non-functional cavity, which would cause significant vibration on the part of the back plate 540 opposite to the battery 600. In addition, when the part of the back plate 540 opposite to the battery 600 is pressed, the air pressure between the back plate 540 and the battery 600 will change, that is, airflow will also be generated between the back plate 540 and the battery 600. The airflow between the back plate 540 and the battery 600 will not pass through the non-functional cavity, the second mounting hole 579 and the first mounting hole 578 to enter the rear cavity and act on the diaphragm of the core 210. Therefore, the normal operation of the speaker 200 can be guaranteed, and the audio effect of the speaker 200 can be guaranteed.

[0249] In other embodiments, the first portion 410 of the display screen 400 can also serve as a cover, covering the receiving cavity. In this case, there is a gap between the back plate 540 and the middle plate 570. The barrier 770 is located within this gap, that is, the barrier 770 is located between the back plate 540 and the middle plate 570. The barrier 770 blocks the first mounting hole 578 and the second mounting hole 579, meaning the first mounting hole 578 and the second mounting hole 579 are not connected.

[0250] It is understandable that by providing a barrier 770 in the gap between the middle plate 570 and the back plate 540, and by blocking the first mounting hole 578 and the second mounting hole 579, the airflow generated when the speaker 200 is working can be prevented from entering the gap between the middle plate 570 and the back plate 540 through the first mounting hole 578 from the rear cavity, and then entering the non-functional cavity through the second mounting hole 579. Therefore, the airflow generated when the speaker 200 is working can be prevented from reaching the space between the battery 600 and the first part 410 of the display screen 400 through the non-functional cavity, thus preventing significant vibration of the portion of the first part 410 of the display screen 400 opposite to the battery 600. Furthermore, when the portion of the first part 410 of the display screen 400 opposite to the battery 600 is pressed, the air pressure between the first part 410 of the display screen 400 and the battery 600 will change, meaning that airflow will also occur between the first part 410 of the display screen 400 and the battery 600. The airflow between the first part 410 of the display screen 400 and the battery 600 will not pass through the non-functional cavity, the second mounting hole 579 and the first mounting hole 578 to enter the rear cavity and act on the diaphragm of the core 210. Therefore, the normal operation of the speaker 200 can be guaranteed, and the audio effect of the speaker 200 can be guaranteed.

[0251] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A terminal device, characterized by comprising: The terminal device comprises a middle frame, a cover, a circuit board, a loudspeaker and a sealing part. The middle frame comprises a frame and a middle plate. The periphery of the middle plate is connected with the frame. The middle plate and the frame enclose a containing cavity. The containing cavity comprises a first chamber and a second chamber. The first chamber and the second chamber are spaced apart. The first chamber comprises a bottom wall, a first side wall and a second side wall. The second chamber is used for containing a battery. The circuit board and the sealing part are contained in the first chamber. The sealing part is sleeved on the circuit board. The first chamber comprises a functional cavity and a non-functional cavity. The functional cavity and the non-functional cavity are spaced apart by the sealing part. The non-functional cavity is communicated with the second chamber. The loudspeaker is located in the functional cavity. The loudspeaker is connected with the middle frame. The loudspeaker is arranged in a spaced-apart manner with the circuit board. The cover covers the containing cavity. The periphery of the cover is sealingly connected with the frame. The sealing part sealingly connects the cover, the first side wall, the second side wall and the bottom wall of the first chamber. The cover, the sealing part and the functional cavity form a back cavity of the loudspeaker.

2. The terminal device according to claim 1, characterized by The sealing part comprises a first mounting body, a connecting body and a second mounting body. Along the length direction of the sealing part, the first mounting body and the second mounting body are connected to opposite ends of the connecting body. The first mounting body and the second mounting body each extend away from the connecting body along the length direction of the sealing part. The sealing part comprises a first end face and a second end face arranged away from the first end face. The sealing part is provided with a through groove. The through groove penetrates the first end face and the second end face. Along the length direction of the sealing part, the through groove penetrates the first mounting body, the connecting body and the second mounting body. The circuit board is sleeved in the through groove. The groove wall of the through groove is sealingly connected with the circuit board. The first mounting body is sealingly connected with the first side wall. The second mounting body is sealingly connected with the second side wall. The connecting body is sealingly connected with the bottom wall of the first chamber and the cover.

3. The terminal device according to claim 2, characterized by The connecting body is at least partially elastic.

4. The terminal device according to claim 3, characterized by The first mounting body and the second mounting body are each made of a hard material. The connecting body comprises a first segment and a second segment. Along the extension direction of the connecting body, the first segment is embedded in the second segment. The first segment is connected with the second segment or the first segment is connected to the end of the second segment. The first segment is elastic. The second segment is made of a hard material.

5. The terminal device according to claim 2, characterized by The sealing part further comprises an abutting body. The abutting body is protruded from the groove wall of the through groove. The abutting body is elastic. The abutting body is in interference fit with the circuit board.

6. The terminal device according to claim 2, characterized by The terminal device further comprises a first adhesive strip and a second adhesive strip. The first adhesive strip is clamped between the cover and the first side wall. The second adhesive strip is clamped between the cover and the second side wall. Along the length direction of the sealing part, the sealing part is spaced apart from the first adhesive strip and the second adhesive strip.

7. The terminal device according to claim 6, characterized by The sealing part further comprises a circumferential side surface connected between the first end surface and the second end surface; The sealing part further comprises a deformation body protruding from the circumferential side surface, the deformation body surrounds the circumferential side surface, the deformation body has elasticity, the deformation body is in interference fit with the first cavity side wall, the second cavity side wall, the cover body and the cavity bottom wall of the first cavity, the deformation body is spaced apart from the first adhesive strip in the length direction of the sealing part, and the deformation body is spaced apart from the second adhesive strip.

8. The terminal device according to claim 7, characterized by The circumferential side surface comprises a first side surface, a second side surface and a third side surface, the first side surface and the third side surface are arranged back to back, and the second side surface is connected between the first side surface and the third side surface; The deformation body comprises a first rib, a second rib and a third rib, the first rib surrounds the circumferential side surface, the second rib is located at the connection between the first side surface and the second side surface, the second rib is connected with the first rib and extends in the width direction of the sealing part, and the third rib is located at the connection between the second side surface and the third side surface, the third rib is connected with the first rib and extends in the width direction of the sealing part; The first rib is in interference fit with the first cavity side wall, the second cavity side wall, the cover body and the cavity bottom wall of the first cavity, the second rib is in interference fit with the first cavity side wall and the cover body, and the third rib is in interference fit with the second cavity side wall and the cover body. The second rib is spaced apart from the first adhesive strip in the length direction of the sealing part, and the third rib is spaced apart from the second adhesive strip.

9. The terminal device according to claim 7, characterized by The circumferential side surface comprises a first side surface, a second side surface and a third side surface, the first side surface and the third side surface are arranged back to back, and the second side surface is connected between the first side surface and the third side surface; The deformation body comprises a first rib, a second rib and a third rib, the first rib surrounds the circumferential side surface, the second rib is connected with the first mounting body and protrudes from the second side surface, one end of the second rib close to the connecting body is connected with the first rib, and the other end of the second rib away from the connecting body is spaced apart from the first rib, the third rib is connected with the second mounting body and protrudes from the second side surface, one end of the third rib close to the connecting body is connected with the first rib, and the other end of the third rib away from the connecting body is spaced apart from the first rib. The first rib is in interference fit with the first cavity side wall, the second cavity side wall, the cover body and the cavity bottom wall of the first cavity, the second rib is in interference fit with the first cavity side wall and the cover body, and the third rib is in interference fit with the second cavity side wall and the cover body.

10. The terminal device according to claim 9, characterized by The other end of the second rib away from the connecting body is spaced apart from the first rib to form a first opening, and the other end of the third rib away from the connecting body is spaced apart from the first rib to form a second opening. The first opening is towards the first adhesive strip, the first adhesive strip, the first rib and the second rib form a first glue filling cavity, the first glue filling cavity is filled with a first glue, the first glue is connected with the cavity peripheral wall of the first glue filling cavity, the second opening is towards the second adhesive strip, the second adhesive strip, the first rib and the third rib form a second glue filling cavity, the second glue filling cavity is filled with a second glue, and the second glue is connected with the cavity peripheral wall of the second glue filling cavity.

11. The terminal device according to claim 7, characterized by The terminal device further comprises a first blocking layer and a second blocking layer, one end of the first blocking layer is connected to the first adhesive strip, the other end is connected to the surface of the first mounting body towards the cover body, the first blocking layer is spaced apart from the deformation body along the width direction of the sealing part, one end of the second blocking layer is connected to the second adhesive strip, the other end is connected to the surface of the second mounting body towards the cover body, and the second blocking layer is spaced apart from the deformation body along the width direction of the sealing part.

12. The terminal device according to claim 7, characterized by The circuit board is provided with a first notch and a second notch, and the first notch and the second notch penetrate the two surfaces in the thickness direction of the circuit board, the first notch is towards the first cavity side wall, and the second notch is towards the second cavity side wall. The connecting body of the sealing part is connected with the two surfaces in the thickness direction of the circuit board, the first mounting body of the sealing part is clamped with the first notch, and the second mounting body of the sealing part is clamped with the second notch.

13. The terminal device according to claim 12, characterized by The first cavity side wall is provided with two first protrusions, the two first protrusions are spaced apart from each other, and a first limiting groove is formed between the two first protrusions, the second cavity side wall is provided with two second protrusions, the two second protrusions are spaced apart from each other, and a second limiting groove is formed between the two second protrusions, and the first limiting groove and the second limiting groove are oppositely arranged. The two first protrusions are located in the first notch, the first mounting body of the sealing part is limited in the first limiting groove, the two second protrusions are located in the second notch, and the second mounting body of the sealing part is limited in the second limiting groove.

14. The terminal device according to any one of claims 1-13, characterized by, The first chamber comprises a first sub-cavity, a second sub-cavity and a third sub-cavity, the second sub-cavity and the second chamber are arranged side by side along the width direction of the terminal device, the first sub-cavity and the third sub-cavity are respectively located at opposite ends of the second sub-cavity and the second chamber along the length direction of the terminal device, and the first sub-cavity, the second sub-cavity and the third sub-cavity are in communication with each other. The circuit board comprises a first board body, a second board body and a third board body, the first board body, the second board body and the third board body are sequentially connected along the length direction of the terminal device, the second board body is connected to the same side of the first board body and the third board body along the width direction of the terminal device, the first board body is accommodated in the first sub-cavity, the second board body is accommodated in the second sub-cavity, and the third board body is accommodated in the third sub-cavity. The sealing part is sleeved on the second plate body, and along the terminal equipment width direction, the two cavity side walls of the second sub-cavity arranged oppositely are the first cavity side wall and the second cavity side wall respectively; or, The sealing part is sleeved on the first plate body, and along the terminal equipment length direction, the two cavity side walls of the first sub-cavity arranged oppositely are the first cavity side wall and the second cavity side wall respectively; or, The sealing part is sleeved on the third plate body, and along the terminal equipment length direction, the two cavity side walls of the third sub-cavity arranged oppositely are the first cavity side wall and the second cavity side wall respectively.

15. The terminal device according to any one of claims 1-13, characterized by, The first cavity chamber comprises a first sub-cavity and a second sub-cavity, and along the terminal equipment length direction, the first sub-cavity, the second cavity chamber and the second sub-cavity are arranged in sequence; The circuit board comprises a first plate body and a second plate body, the first plate body is accommodated in the first sub-cavity, and the second plate body is accommodated in the second sub-cavity; The sealing part is sleeved on the first plate body, and along the terminal equipment width direction, the two cavity side walls of the first sub-cavity arranged oppositely are the first cavity side wall and the second cavity side wall respectively.

16. The terminal device according to any one of claims 1-13, characterized by The middle plate is provided with a first mounting hole and a second mounting hole, and along the terminal equipment thickness direction, the first mounting hole penetrates the cavity bottom wall of the functional cavity, and the second mounting hole penetrates the cavity bottom wall of the non-functional cavity; The terminal equipment comprises a back plate, a display screen and a blocking body, the back plate and the display screen are connected with the middle plate, and along the terminal equipment thickness direction, the back plate and the display screen are located on opposite sides of the middle plate respectively; The covering body is the back plate, the blocking body is located between the middle plate and the display screen, the blocking body is connected with the middle plate and the display screen, and the blocking body blocks the first mounting hole and the second mounting hole.

17. The terminal device according to any one of claims 1-13, characterized by The middle plate is provided with a first mounting hole and a second mounting hole, and along the terminal equipment thickness direction, the first mounting hole penetrates the cavity bottom wall of the functional cavity, and the second mounting hole penetrates the cavity bottom wall of the non-functional cavity; The terminal equipment comprises a back plate, a display screen and a blocking body, the back plate and the display screen are connected with the middle plate, and along the terminal equipment thickness direction, the back plate and the display screen are located on opposite sides of the middle plate respectively; The covering body is the display screen, the blocking body is located between the middle plate and the back plate, the blocking body is connected with the middle plate and the back plate, and the blocking body blocks the first mounting hole and the second mounting hole.

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