Terminal equipment

Abstract

The present application discloses a terminal device. The terminal device includes a first shell, a second shell, a first spacer, a mounting plate and a speaker. The first shell and the second shell jointly define a receiving space. At least one mounting cavity connected to the receiving space is formed on the first shell and / or the second shell. The first spacer is at least partially arranged around the periphery of the speaker. The first spacer, the mounting plate, the first shell and / or the second shell jointly form a rear sound cavity of the speaker, and the rear sound cavity is connected to at least one mounting cavity. The audio emitted by the speaker can enter the mounting cavity through the rear sound cavity, and the rear sound cavity and the mounting cavity are used together for the propagation of the audio, so that the terminal device can obtain a larger audio propagation space and improve the sound quality of the terminal device. The mounting cavity on the shell assembly is the original space in the terminal device. There is no need to plan other space, and the volume of the space for audio propagation at the rear sound cavity can be expanded, which is convenient for the lightweight design of the terminal device.

Description

Technical Field

[0001] The present application relates to the technical field of electroacoustic products, and in particular to a terminal device. Background Art

[0002] With the rapid development of electronic technology, portable terminal devices are becoming increasingly miniaturized, and the requirements for the size and sound quality of the electroacoustic devices of terminal devices are becoming increasingly higher. The speaker is an important acoustic component of portable terminal devices, which is used to complete the conversion of electrical signals and acoustic signals. Among them, the use of dual speakers in terminal devices is becoming more and more popular. The sound cavity of the dual speaker is divided into a front sound cavity and a rear sound cavity. The front sound cavity and the rear sound cavity are completely separated. The volume of the rear sound cavity determines the resonant frequency of the electroacoustic device, which has an important influence on the acoustic performance and sound quality. However, the structure of the speaker module is becoming more and more miniaturized. How to design a sufficient rear sound cavity volume for the speaker module in a limited size structure has become one of the main design difficulties. Summary of the invention

[0003] An embodiment of the present application provides a terminal device that can solve the problem of how to design a sufficient rear sound cavity volume within a limited space of the terminal device.

[0004] The terminal device provided in the embodiment of the present application includes:

[0005] A housing assembly, comprising a first housing and a second housing, wherein the first housing and the second housing together define a receiving space, and at least one mounting cavity communicating with the receiving space is formed on the first housing and / or the second housing, and the mounting cavity is a space for accommodating another part of components of the terminal device;

[0006] A mounting plate is disposed in the receiving space and is formed with a sound amplification opening communicating with the receiving space;

[0007] A loudspeaker is received in the sound amplification opening and is sealed and connected to the second shell on a side facing the second shell to form a front sound cavity, and a gap exists between an outer peripheral surface of the loudspeaker and an inner wall surface of the sound amplification opening;

[0008] A first spacer is at least partially arranged around the periphery of the speaker and is connected to the mounting plate. The first spacer is also connected to at least one of the first shell and the second shell, so that the first spacer, the mounting plate, the first shell and / or the second shell together form a rear sound cavity of the speaker, and the rear sound cavity is connected to at least one of the mounting cavities.

[0009] Based on the terminal device of the embodiment of the present application, the audio emitted by the speaker can enter the installation cavity through the rear sound cavity and be reflected in the installation cavity. The rear sound cavity and the installation cavity are used together for audio propagation, so that the terminal device can obtain a larger audio propagation space and improve the sound quality of the terminal device. The installation cavity on the shell assembly is the original space in the terminal device. There is no need to plan other space, and the volume of the space for audio propagation at the rear sound cavity can be expanded. The structure is simple, which is convenient for the lightweight design of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 A schematic diagram of a partial three-dimensional structure of a terminal device according to an embodiment of the present application;

[0012] Figure 2 An exploded diagram of a terminal device according to an embodiment of the present application;

[0013] Figure 3 A cross-sectional view of a housing according to an embodiment of the present application;

[0014] Figure 4 for Figure 1 Sectional view at AA in the middle;

[0015] Figure 5 for Figure 4 A partial enlarged view of point D in the middle.

[0016] Figure 6 Schematic diagram of a first spacer disposed around the periphery of a speaker in an embodiment of the present application Figure 1 ;

[0017] Figure 7 for Figure 1 Sectional view at the middle BB;

[0018] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0019] Fig. 9 This is a schematic diagram of a three-dimensional structure of a first spacer with a fracture according to an embodiment of the present application;

[0020] Fig.10 A schematic diagram of a three-dimensional structure of a first spacer in a closed structure according to an embodiment of the present application;

[0021] Fig.11 Schematic diagram of a first spacer disposed around the periphery of a speaker in an embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] The speakers of the terminal device include two types: full-cavity BOX speakers and half-cavity BOX speakers. The full-cavity BOX speaker is an integrated package to form the sound cavity of the speaker, and has good sound quality, but the structural design and processing technology of the full-cavity BOX speaker are complex, the cost is high, the individual space occupied is large, and it is difficult to combine and install with other structures in the terminal device. The half-cavity BOX speaker can use the outer shell of the terminal device to encapsulate the sound cavity of the speaker. The choice of the position of the sound cavity is more flexible and the cost is lower, but the fragmented sound cavity design requires a large sound cavity volume, and it is difficult to meet the lightweight design requirements of the terminal device. The inventors have found that there is some space at the functional components in the terminal device. If these spaces in the terminal device can be used as the sound cavity of the speaker, the volume of the sound cavity of the speaker can be effectively expanded. Based on this, an embodiment of the present application provides a terminal device with a speaker.

[0024] The terminal device provided in the embodiment of the present application can be any terminal device with a sound output function, such as a mobile phone, a tablet computer, a laptop computer, an MP3 player, an MP4 player, a landline telephone, an electronic watch, an electronic calculator, etc.

[0025] like Figure 1 and Figure 2 As shown, it is a three-dimensional schematic diagram of the terminal device 10, and the terminal device 10 includes a shell assembly 100, and a camera decoration 410 installed on the shell assembly 100, and also includes a mounting plate 500, a speaker 200, a card tray assembly 420, etc. installed in the shell assembly 100, wherein the mounting plate 500 can be a circuit board in the terminal device 10 (for example, the mainboard of the terminal device 10) or a structural member for supporting other components.

[0026] like Figure 3 , which is a partial cross-sectional view of a housing assembly 100 of a terminal device 10, the housing assembly 100 includes a first housing 110 and a second housing 120, and the first housing 110 and the second housing 120 together define a receiving space 100a. The receiving space 100a is a space for accommodating a part of the components of the terminal device 10, for example, the receiving space 100a can be used to accommodate components such as the mounting plate 500, the speaker 200, the power supply, and the camera module of the terminal device 10.

[0027] At least one installation cavity 10a is formed on the first housing 110 and / or the second housing 120 and is connected to the receiving space 100a. The installation cavity 10a is a space for accommodating another part of the components of the terminal device 10. For example, the installation cavity 10a can be used to accommodate components such as the card tray assembly 420 and the camera decoration 410 of the terminal device 10. Figure 3 At n, the installation cavity 10a may be a space provided on the inner wall of the first shell 110 and / or the second shell 120, or, as Figure 3 In the middle, the installation cavity 10a may also be a space provided on the first shell 110 and / or the second shell 120 and communicated with the outside.

[0028] like Figure 4 As shown, the mounting plate 500 is accommodated in the receiving space 100a, and the mounting plate 500 has a sound amplification opening 510, and the sound amplification opening 510 penetrates the mounting plate 500 so that the sound amplification opening 510 is connected to the receiving space 100a. The speaker 200 is accommodated in the sound amplification opening 510, and the speaker 200 is sealed and connected to the second shell 120 on the side facing the second shell 120 to form a front sound cavity M. In one embodiment, the terminal device 10 may include a front cavity seal 210, the front cavity seal 210 is sealed and connected to the side of the speaker 200 away from the first shell 110, and the front cavity seal 210 is sealed and connected to the second shell 120 to enclose the front sound cavity M. The second shell 120 has a sound outlet 200a connected to the outside, and the front sound cavity M of the speaker 200 is connected to the sound outlet 200a, so that the sound emitted by the speaker 200 can be dispersed.

[0029] It is understandable that, based on the certain thickness of the speaker 200, the speaker 200 can be partially accommodated in the sound amplification opening 510, effectively utilizing the space and facilitating the reduction of the thickness of the terminal device 10. When the mounting plate 500 is a circuit board, in one embodiment, the speaker 200 accommodated in the sound amplification opening 510 is directly electrically connected to the circuit board, simplifying the electrical connection lines in the terminal device 10.

[0030] The terminal device 10 also includes a first spacer 310, which is at least partially arranged around the periphery of the speaker 200 and connected to the mounting plate 500. The first spacer 310 is also connected to at least one of the first shell 110 and the second shell 120, so that the first spacer 310, the mounting plate 500, the first shell 110 and / or the second shell 120 together form a rear sound cavity X of the speaker 200, and the rear sound cavity X is connected to at least one mounting cavity 10a.

[0031] The audio emitted by the speaker 200 can enter the installation cavity 10a through the rear sound cavity X and be reflected in the installation cavity 10a. The rear sound cavity X and the installation cavity 10a are used together for audio propagation, so that the terminal device 10 can obtain a larger audio propagation space and improve the sound quality of the terminal device 10. The installation cavity 10a on the housing assembly 100 is the original space in the terminal device 10. There is no need to plan other space, and the volume of the sound cavity at the rear sound cavity X for audio propagation can be expanded, which facilitates the lightweight design of the terminal device 10.

[0032] In addition, when a portion of the rear sound cavity X and the mounting cavity 10a are disposed on opposite sides of the mounting plate 500, the mounting plate 500 is provided with a sound amplification opening 510, which can also facilitate the connection of the spaces on opposite sides of the mounting plate 500, so as to expand the volume of the space for audio transmission at the rear sound cavity X and improve the sound quality of the terminal device 10. In one embodiment, there is a gap between the outer peripheral surface of the speaker 200 and the inner wall surface of the sound amplification opening 510, and the gap connects the spaces on opposite sides of the mounting plate 500.

[0033] like Figure 4 and Figure 5 As shown, in one embodiment, at least one mounting cavity 10a is a camera cavity 101a formed in the first housing 110, the camera cavity 101a is used to accommodate the camera decoration 410, and the camera decoration 410 is connected to the first housing 110, and the camera decoration 410 is used to cover the camera module of the terminal device 10 to protect the camera module. At this time, the camera cavity 101a is a cavity connected to the outside world so that external light can pass through the camera decoration 410 to reach the camera module. The first spacer 310 is connected to the first housing 110 and the mounting plate 500 so that the rear sound cavity X is connected to the camera cavity 101a, and the camera decoration 410 is accommodated in the camera cavity 101a and encapsulates the camera cavity 101a. .

[0034] In some embodiments, a portion of the first shell 110 adjacent to the camera decoration 410 is hollowed out to expand the volume of the camera cavity 101a; alternatively, a portion of the structure of the camera decoration 410 at one end facing the mounting portion and adjacent to the wall of the camera cavity 101a is hollowed out to utilize more space in the camera cavity 101a for audio transmission.

[0035] like Figure 4 and Figure 5As shown, the camera decoration 410 includes a decoration body 411 and a decoration cover 412 which are stacked. The decoration body 411 is accommodated in the camera cavity 101a and connected to the first shell 110. The decoration cover 412 is located on the side of the decoration body 411 away from the mounting plate 500. The decoration cover 412 and the decoration body 411 are arranged to form a receiving cavity 410a for accommodating the camera module. The wall of the decoration body 411 forming the receiving cavity 410a can be connected to the camera module to limit the position of the camera module and improve the installation stability of the camera module. The decoration cover 412 can be directly set to a plate shape, and cover the end of the decoration body 411 away from the mounting plate 500 and be sealed to the decoration body 411, so that the decoration cover 412 and the decoration body 411 enclose the receiving cavity 410a; or, as Figure 2 and Figure 4 As shown, in one embodiment, the decorative cover 412 includes a first cover body 4121 and a second cover body 4122, the first cover body 4121 is provided with an opening for accommodating a camera module, and the second cover body 4122 encapsulates the opening of the first cover body 4121 so that the second cover body 4122 and the decorative body 411 enclose a accommodating cavity 410a.

[0036] In one embodiment, the first housing 110 includes a middle frame 111 connected to the second housing 120, a partition 114 connected to the middle frame 111, and a battery cover 112 stacked with the partition 114, and the battery cover 112 can be connected to the middle frame 111 or the partition 114. Among them, a camera cavity 101a is formed between the partition 114 and the battery cover 112, the partition 114 is located between the battery cover 112 and the mounting plate 500 and connected to the decorative body 411 of the camera decorative member 410, the partition 114 has a first through hole 114a connected to the camera cavity 101a, at least part of the first spacer 310 is connected to the partition 114 and is arranged around the first through hole 114a, and the first through hole 114a connects the camera cavity 101a and the rear sound cavity X. The partition 114 further has a second through hole 114 b communicating with the accommodating cavity 410 a , and the camera module is passed through the second through hole 114 b and accommodated in the accommodating cavity 410 a .

[0037] In one embodiment, the internal structure of the camera decoration 410 is hollowed out, that is, at least one place on the decoration body 411 and between the decoration body 411 and the decoration cover 412 is hollowed out to form a first sound cavity channel Y1 in the camera decoration 410. The first sound cavity channel Y1 is connected to the rear sound cavity X through the first through hole 114a, and the sound cavity volume for audio transmission is further expanded through the first sound cavity channel Y1.

[0038] In one embodiment, the surface of the decorative body 411 facing away from the decorative cover plate 412 is provided with a first groove 411a. The camera decorative member 410 further includes a first connection layer 413, which is respectively sealed and connected to the decorative body 411 for forming the wall of the first groove 411a and the partition 114 for forming the wall of the camera cavity 101a, and the first connection layer 413 is hollowed out corresponding to the position of the first through hole 114a, so that the decorative body 411, the partition 114 and the first connection layer 413 jointly enclose the first sound cavity channel Y1. At least part of the first spacer 310 is directly enclosed around the periphery of the first through hole 114a, so that the first sound cavity channel Y1 is connected to the rear sound cavity X.

[0039] In one embodiment, the decoration body 411 is provided with a sound amplification through hole 411b penetrating the decoration body 411, and the wall surface of the decoration cover plate 412 facing the mounting plate 500 is connected to the wall surface of the decoration body 411 used to form the sound amplification through hole 411b, forming a first sound cavity channel Y1, and the first sound cavity channel Y1 is connected to the first through hole 114a. Further, when the decoration body 411 has a first groove body 411a, the sound amplification through hole 411b is connected to the first groove body 411a to jointly form the first sound cavity channel Y1 connected to the first through hole 114a, further expanding the volume of the space for the co-transmission of audio.

[0040] In one embodiment, there is a gap between the decorative body 411 and the decorative cover plate 412 (for ease of description, the gap is described as the first gap 411c later), and the camera decorative part 410 further includes a second connection layer 414, and the second connection layer 414 surrounds the periphery of the first gap 411c, so that the decorative body 411, the decorative cover plate 412 and the second connection layer 414 jointly surround the first sound cavity channel Y1. Further, when the decorative body 411 has a sound amplification through hole 411b and a first groove body 411a, the first gap 411c is connected to the sound amplification through hole 411b, and the first gap 411c, the sound amplification through hole 411b and the first groove body 411a jointly form the first sound cavity channel Y1 connected to the first through hole 114a, thereby further expanding the volume of the first installation cavity 10aY1.

[0041] In one embodiment, a groove may be dug on at least one surface of the decoration body 411 and the decoration cover plate 412 (and the surfaces facing each other) to form a first gap 411c between the decoration body 411 and the decoration cover plate 412.

[0042] The first shell 110 has a first surface 112a facing away from the mounting plate 500, that is, the battery cover 112 has a first surface 112a facing away from the mounting plate 500. In one embodiment, the camera decorative piece 410 protrudes the first surface 112a from the camera cavity 101a in a direction away from the mounting plate 500, and the camera decorative piece 410 is extended outside the camera cavity 101a, so that the first shell 110 has more space for forming a space connected to the rear sound cavity X. At this time, the outer peripheral wall surface of the decorative body 411 is sealed and connected to the wall surface of the camera cavity 101a, and the decorative body 411 and the decorative cover plate 412 jointly encapsulate the camera cavity 101a. In one embodiment, the surface of the decorative cover plate 412 facing away from the decorative body 411 is flush with the first surface 112a, and the outer peripheral wall surface of the decorative body 411 and / or the outer peripheral wall surface of the decorative cover plate 412 are sealed and connected to the wall surface of the mounting cavity 10a to encapsulate the camera cavity 101a.

[0043] In one embodiment, the housing assembly 100 further includes a reinforcement member 130, which is connected to the partition 114. For example, the reinforcement member 130 is connected to the surface of the partition 114, or the reinforcement member 130 is embedded in the partition 114, and the support strength of the partition 114 is improved by the reinforcement member 130. The reinforcement member 130 is hollowed out corresponding to the first through hole 114a and the second through hole 114b to connect the spaces on opposite sides of the reinforcement member 130.

[0044] Furthermore, in the stacking direction of the battery cover 112 and the partition 114, the projection of the reinforcement 130 covers the projection of the connection between the camera decorative member 410 and the partition 114, so that when the partition 114 is provided with the first through hole 114a, the reinforcement 130 can provide more favorable support for the camera decorative member 410. The reinforcement 130 can be a metal plate such as a steel plate, and can also replace part of the partition 114 to reduce the space occupied by the partition 114, so that there is more space on both sides of the partition 114 for expanding the volume of the installation cavity 10a and the rear sound cavity X.

[0045] In one embodiment, the card tray assembly 420 is located between the mounting plate 500 and the second housing 120, and the card tray assembly 420 is connected to the second housing 120; Figure 6 As shown, at least one installation cavity 10a is a card tray cavity 101b formed in the second shell 120, and the card tray cavity 101b is used to accommodate the card tray assembly 420. The first spacer 310 is connected to the second shell 120 and the mounting plate 500, and is arranged around the periphery of the card tray cavity 101b to connect the rear sound cavity X with the card tray cavity 101b, so that the card tray cavity 101b of the shell assembly 100 used to accommodate the card tray assembly 420 can also be reused for audio transmission, thereby improving the sound quality of the terminal device 10.

[0046] like Figure 2 and Figure 7As shown, the second shell 120 has a card tray opening 420a connected to the card tray cavity 101b, and the card tray assembly 420 includes a card seat 422 and a card tray 421. The card seat 422 is arranged corresponding to the card tray opening 420a and is accommodated in the card tray cavity 101b. The card seat 422 has a card slot 422a. One end of the card tray 421 is accommodated in the card slot 422a, and the other end covers the card tray opening 420a. The first spacer 310 can extend to connect to the wall surface of the second shell 120 adjacent to the card tray opening 420a, and is sealed and connected to the wall surface of the second shell 120 adjacent to the card tray opening 420a and the surface of the mounting plate 500 facing the second shell 120.

[0047] Furthermore, in one embodiment, the card tray assembly 420 further includes a card tray seal 423 , which is sleeved on the periphery of the card tray 421 and seals the card tray opening 420 a .

[0048] In one embodiment, the card holder 422 further has a card holder hole connected to the card slot 422a, and the card holder hole is also connected to the card holder cavity 101b, so that the space inside the card holder 422 is utilized.

[0049] In one embodiment, the number of the first spacer 310 is one, and the number of the first spacer 310 is one, and the rear sound cavity X is formed on one side of the mounting plate 500. For example, the first spacer 310 is disposed between the mounting plate 500 and the first shell 110, and is connected to the mounting plate 500 and the partition 114 to enclose the rear sound cavity X; or, the first spacer 310 is disposed between the mounting plate 500 and the second shell 120, and is connected to the mounting plate 500 and the second shell 120 to enclose the rear sound cavity X.

[0050] In one embodiment, there are two first spacers 310, one of which is disposed between the mounting plate 500 and the first shell 110 and connected to the mounting plate 500 and the first shell 110 to form a first sound amplification cavity X1, and the other first spacer 310 is disposed between the mounting plate 500 and the second shell 120 and connected to the mounting plate 500 and the second shell 120 to form a second sound amplification cavity X2. The sound amplification opening 510 connects the first sound amplification cavity X1 and the second sound amplification cavity X2 to form a rear sound cavity X, making full use of the space on opposite sides of the mounting plate 500. At the same time, the structure of the first spacer 310 can be flexibly arranged to connect multiple mounting cavities 10a located on opposite sides of the mounting plate 500 with the rear sound cavity X, so as to expand the volume of the sound cavity. Figure 5 and Figure 8 , which is a partial cross-sectional view of two first spacers 310 disposed on opposite sides of the mounting plate 500 to enclose a first sound amplification cavity X1 and a second sound amplification cavity X2.

[0051] like Fig. 9 and Fig.10 As shown, it is a schematic diagram of the three-dimensional structure of the first spacer 310 in two embodiments of the present application, such as Fig.11 As shown, Fig.10 The first spacer 310 in the closed structure is arranged around the periphery of the speaker 200. When assembled, Fig.10 The opposite sides of the first spacer 310 are respectively connected to the partition plate 114 and the mounting plate 500 to enclose a first sound expansion cavity X1. At this time, the camera decoration 410 is connected to the first shell 110. Fig. 9 The first spacer 310 in the embodiment has a break 310a, such as Figure 6 As shown, Fig. 9 FIG. 1 is a schematic diagram of a structure in which a first spacer 310 having a break 310a is disposed around the periphery of the speaker 200. When assembled, Fig. 9 The two opposite sides of the first spacer 310 are respectively connected to the second shell 120 and the mounting plate 500, and the end of the first spacer 310 forming the break 310a is connected to the second shell 120 near the card tray opening 420a to enclose the second sound amplification cavity X2. At this time, the card tray assembly 420 is connected to the second shell 120. Of course, in some other embodiments, the structure of the first spacer 310 may not be limited to the two design methods described above. For example, the first spacer 310 may also be formed by a multi-section structure that is connected end to end to enclose the rear sound cavity X.

[0052] like Figure 6 As shown, the terminal device 10 also includes a support member 330, which is integrally connected to the first spacer 310, and the support member 330 is arranged in the rear sound cavity X, one side of the support member 330 is connected to the mounting plate 500, and the other side of the support member 330 is connected to the first shell 110 or the second shell 120, so as to provide support for the mounting plate 500 through the support member 330, prevent the mounting plate 500 support from warping and deformation caused by expanding the volume of the sound cavity, and effectively improve the installation stability of the mounting plate 500 and the structure installed on the mounting plate 500.

[0053] The first spacer 310 and the support member 330 can both be made of elastic materials, so that the first spacer 310 and the support member 330 can abut against the structure to which they are connected to form a sealing structure, thereby improving the sealing of the rear sound cavity X. The first spacer 310 and the support member 330 can be made of elastic materials such as silicone and rubber. Furthermore, in one embodiment, the surfaces of the first spacer 310 and the support member 330 have an adhesive layer to improve the connection stability between the first spacer 310 and the support member 330 and other structures.

[0054] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A terminal device, characterized in that: include: A housing assembly, comprising a first housing and a second housing, wherein the first housing and the second housing together define a receiving space, and at least one mounting cavity communicating with the receiving space is formed on the first housing and / or the second housing, and the mounting cavity is a space for accommodating another part of components of the terminal device; A mounting plate is disposed in the receiving space and is formed with a sound amplification opening communicating with the receiving space; A loudspeaker is received in the sound amplification opening and is sealed and connected to the second shell on a side facing the second shell to form a front sound cavity, and a gap exists between an outer peripheral surface of the loudspeaker and an inner wall surface of the sound amplification opening; A first spacer is at least partially arranged around the periphery of the speaker and is connected to the mounting plate. The first spacer is also connected to at least one of the first shell and the second shell, so that the first spacer, the mounting plate, the first shell and / or the second shell together form a rear sound cavity of the speaker, and the rear sound cavity is connected to at least one of the mounting cavities.

2. The terminal device according to claim 1, characterized in that: The terminal device further includes a camera decoration, and the camera decoration is connected to the first housing; At least one of the installation cavities is a camera cavity formed in the first shell, the camera cavity is used to accommodate the camera decoration, and the camera decoration encapsulates the camera cavity, and the first spacer is connected to the first shell and the mounting plate to connect the rear sound cavity with the camera cavity.

3. The terminal device according to claim 2, characterized in that: A first sound cavity channel communicating with the rear sound cavity is formed in the camera decoration.

4. The terminal device according to claim 3, characterized in that: The camera decoration comprises: A decorative body, accommodated in the camera cavity and connected to the first shell; The decorative cover plate is stacked with the decorative body and is located on a side of the decorative body away from the mounting plate. The first sound cavity channel is formed at least at one location on the decorative body or between the decorative body and the decorative cover plate.

5. The terminal device according to claim 4, characterized in that: A first groove is disposed on the surface of the decorative body away from the decorative cover plate, and the first groove forms the first sound cavity channel; and / or The decoration body is provided with a first through hole penetrating the decoration body, and the first through hole forms the first sound cavity channel; and / or There is a gap between the decorative body and the decorative cover plate, and the gap forms the first sound cavity channel.

6. The terminal device according to claim 2, characterized in that: The first shell has a first surface facing away from the mounting plate, and the camera decoration piece protrudes from the camera cavity toward the first surface away from the mounting plate.

7. The terminal device according to claim 2, characterized in that: The first shell includes a partition and a battery cover stacked with the mounting plate, the camera cavity is formed between the partition and the battery cover, the partition is located between the battery cover and the mounting plate and is connected to the camera decoration, the partition has a first through hole connected to the camera cavity, the first spacer is connected to the partition and surrounded by the first through hole, and the first through hole connects the camera cavity and the rear sound cavity.

8. The terminal device according to claim 1 or 2, characterized in that: The terminal device further includes a card tray assembly, and the card tray assembly is connected to the second housing; At least one of the mounting cavities is a card tray cavity formed in the second shell, and the card tray cavity is used to accommodate the card tray assembly. The first spacer is connected to the second shell and the mounting plate, and is arranged around the periphery of the card tray cavity to connect the rear sound cavity with the card tray cavity.

9. The terminal device according to claim 8, characterized in that: The second housing has a card tray opening communicating with the card tray cavity; the card tray assembly comprises: A card holder, arranged corresponding to the card holder opening and accommodated in the card holder cavity; A card tray has a portion housed in the card seat and another portion covering the card tray opening.

10. The terminal device according to claim 1, characterized in that: The number of the first spacer is one, and the first spacer is connected between the first shell and the mounting plate or between the second shell and the mounting plate to enclose the rear sound cavity; or, There are two first spacers, one of which is connected between the first shell and the mounting plate to form a first sound amplification cavity, and the other first spacer is connected between the second shell and the mounting plate to form a second sound amplification cavity. The sound amplification opening connects the first sound amplification cavity and the second sound amplification cavity to form the rear sound cavity.

11. The terminal device according to claim 10, characterized in that: The gap communicates with the first sound amplification cavity and the second sound amplification cavity.

12. The terminal device according to claim 1, characterized in that: The terminal device also includes a support member, which is integrally connected to the first spacer and is arranged in the rear sound cavity. One side of the support member is connected to the mounting plate, and the other side of the support member is connected to the first shell or the second shell.

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