CN112703826A

CN112703826A - Electronic device and expandable device

Info

Publication number: CN112703826A
Application number: CN201880096038.XA
Authority: CN
Inventors: 刘文俊
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2021-04-23
Anticipated expiration: 2038-11-09
Also published as: WO2020093373A1; CN112703826B

Abstract

The application discloses an electronic device (100), comprising: a body (10); a display screen (20) disposed on an outer surface of the body (10); and a functional module (30) detachably attached to the main body (10); the functional module (30) has corresponding functions, and when the functional module is mounted on the body (10), the electronic device (100) realizes the corresponding functions through the functional module (30). The application also provides an expandable apparatus. The application can reduce the use cost of a user and is convenient to manage and maintain.

Description

Electronic device and expandable device

Technical Field

The present application relates to the field of electronic technologies, and in particular, to an electronic device and an expandable apparatus.

Background

With the development of technology, the types of electronic devices are increasing. Electronic devices such as mobile phones, tablet computers, televisions, and stereos are widely used in life.

However, once the type of the existing electronic device is determined, the function of the existing electronic device is also determined. For example, a sound box can only play sound, and if a user wants to watch a video, the user needs to purchase a television or other electronic devices with a display screen, thereby increasing the use cost of the user.

Disclosure of Invention

The embodiment of the application discloses an electronic device and an extensible device, wherein the electronic device and the extensible device can realize multiple different functions, so that the use cost of a user is reduced, and the management and the maintenance are convenient.

The embodiment of the application discloses an electronic device, includes:

a body;

the display screen is arranged on the outer surface of the body; and

the functional module is detachably arranged on the body; the electronic device comprises a body, a functional module, a power supply module and an electronic device, wherein the functional module has corresponding functions, and when the functional module is arranged on the body, the electronic device realizes the corresponding functions through the functional module.

The embodiment of the application discloses an expandable device, which is used for installing a functional module and has corresponding functions; the expandable apparatus, comprising:

the body is used for detachably mounting and fixing a functional module; wherein the functional module has corresponding functions;

the display screen is arranged on the outer surface of the body; and

the main circuit board is contained in the body and used for controlling the display screen to display and controlling the functional module to realize corresponding functions.

The electronic device and the expandable device disclosed by the application have the advantages that the functional module is detachably arranged at one end part of the body, so that the functional module can be conveniently detached to be maintained independently. In addition, different function modules can be installed on the body according to different requirements, wherein different function modules have different functions, and when different function modules are installed on the body, the electronic device realizes different functions, so that the electronic device can be switched among multiple functions, the use cost of a user is reduced, and the electronic device is convenient to maintain and manage.

Drawings

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

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic view of the module and the body of fig. 1 separated from each other.

Fig. 3 is a schematic view illustrating separation of the engaging portion and the stopping portion in an embodiment of the present application.

Fig. 4 is a schematic view illustrating the engaging portion and the stopping portion engaging with each other in an embodiment of the present application.

Fig. 5 is a partially exploded perspective view of an electronic device according to an embodiment of the present application.

Fig. 6 is a cross-sectional view of an electronic device in an embodiment of the present application.

Fig. 7 is a cross-sectional view of an electronic device in another embodiment of the present application.

Fig. 8 is a cross-sectional view of an electronic device in yet another embodiment of the present application.

Fig. 9 is a partial enlarged view of a portion a in fig. 8.

Detailed Description

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

In the description of the embodiments of the present invention, it should be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Please refer to fig. 1, which is a perspective view of an electronic device 100 according to an embodiment of the present application. The electronic device 100 includes a main body 10, a display 20, and a function module 30. The display screen 20 is disposed on an outer surface of the body 10. The Display screen 20 includes, but is not limited to, an Organic Light-Emitting Diode (OLED) Display screen, a Liquid Crystal Display (LCD), a Quantum Dot Display screen (QLED), electronic paper (E-paper Display, EPD), a Touch screen (Touch panel), and the like. The function module 30 is detachably mounted at one end of the body 10. Each of the functional modules 30 has a corresponding function, and when the functional module 30 is mounted on the main body 10, the electronic device 100 implements the corresponding function through the functional module 30. In addition, the main body 10 and the display screen 20 form an expandable device 200, and the expandable device 200 is used for installing the function module 30 and has corresponding functions.

The electronic device 100 provided by the present application can conveniently detach the functional module 30 for independent maintenance because the functional module 30 is detachably mounted on one end of the body 10. In addition, different function modules 30 can be installed on the body 10 according to different requirements, wherein different function modules 30 have different functions, and when different function modules 30 are installed on the body 10, the electronic device 100 implements different functions, so that the electronic device 100 can switch multiple functions, the use cost of a user is reduced, and the maintenance and management are convenient.

In some embodiments, when the functional module 30 is mounted on the body 10, the functional module 30 is electrically connected to the body 10 to receive the power provided by the body 10.

Referring to fig. 2 again, in some embodiments, the body 10 is in a hollow cylindrical shape and includes a receiving cavity 101 and a connecting end 102. The housing cavity 101 of the body 10 is used for housing the functional module 30, and the connecting end portion 102 is used for detachably fixing the functional module 30 after the functional module 30 is housed in the housing cavity 101. That is, the functional module 30 is detachably attached to the main body 10 by being detachably attached to the connecting end portion 102 of the main body 10 after being accommodated in the accommodating chamber 101. The display screen 20 is disposed around the cylindrical outer surface of the body 10. When the functional module 30 is installed in the body 10, the functional module 30 is accommodated in the body 10 and is substantially flush with the end surface of the connecting end portion 102.

Specifically, a plurality of stoppers 11 are spaced on the inner surface of the connecting end portion 102 of the body 10 for mounting the function module 30. Correspondingly, a plurality of engaging portions 31 for engaging with the plurality of stopping portions 11 in a one-to-one correspondence are disposed on the outer surface of the functional module 30. When the functional module 30 is mounted on the main body 10 and fixed relative to the connecting end portion 102, each engaging portion 31 is engaged with the corresponding stopping portion 11. Thus, when the functional module 30 is mounted and accommodated in the main body 10, it will not easily fall off or shake, and the stability of the electronic device 100 is improved.

Referring to fig. 3 and 4, in some embodiments, the body 10 is hollow and cylindrical, that is, the receiving cavity 101 is a cylindrical cavity. The functional module 30 is also cylindrical, and the outer diameter of the functional module 30 is smaller than the inner diameter of the accommodating cavity 101 of the body 10, and can be accommodated in the accommodating cavity 101. When the functional module 30 is installed in the body 10 and rotates along a first direction, the engaging portion 31 engages with the corresponding stopping portion 11, so as to fix the functional module 30; when the module 30 rotates in the second direction, the engaging portion 31 can be separated from the stopping portion 11. When the engaging portion 31 is engaged with the corresponding stopping portion 11, the module 30 is fixed relative to the body 10, that is, the module 30 cannot fall off from the body 10; when the engaging portion 31 is separated from the corresponding stopping portion 11, the module 30 can be detached from the body 10. Wherein the first direction and the second direction are opposite. In this embodiment, the first direction is a clockwise direction, the second direction is a counterclockwise direction, and the clockwise and counterclockwise directions are directions viewed from the side where the functional module is located.

In some embodiments, the edge of one end of the functional module 30 away from the main body 10 protrudes outward to form a clamping edge 32, and the cavity wall of the accommodating cavity 101 of the main body 10 near the opening of the connecting end 102 forms a supporting portion 12 for supporting the clamping edge 32 of the functional module 30. When the functional module 30 is mounted on the body 10, the engaging edge 32 contacts with the abutting portion 12, so as to prevent the module 30 from moving into the body 10. In the present embodiment, the abutting portion 12 is in an annular step shape, and is formed by outwardly recessing a cavity wall of the receiving cavity 101 of the body 10 near the opening of the connecting end portion 102, so that when the functional module 30 is received in the body 10, an outer end surface of the functional module 30 is substantially flush with an end surface of the connecting end portion 102 of the body 10. The engaging edge 32 is correspondingly an annular step shape matching with the holding portion 12. In addition, the user can also apply an external force to the engaging edge 32, so as to rotate the module 30 to fix the module 30 or remove the module 30 from the body 10, thereby facilitating the operation of the user. It can be understood that the outer surface of the engaging edge 32 can be provided with a plurality of threads, and the end surface of the engaging edge 32 is slightly higher than the end surface of the connecting end portion 102, so as to facilitate the operation of the user.

Preferably, the stopping portion 11 is an arc-shaped long block-shaped protrusion formed by the inner wall of the connecting end portion 102 protruding into the body 10, and the extending direction of the stopping portion 11 is perpendicular to the axial direction of the body 10. The engaging portion 31 is an L-shaped structure formed by extending a first distance from the engaging edge 32 in a direction perpendicular to and away from the engaging edge 32 and then extending a second distance in a direction parallel to the engaging edge 32. In some embodiments, the first distance is less than the second distance. The engaging portion 31 includes a vertical arm 311 parallel to the axial direction of the body 10 and a horizontal arm 312 perpendicular to the vertical arm 311. In the present embodiment, the extending direction of the cross arm 312 is the same as the extending direction of the stopper portion 11. When the functional module 30 is accommodated in the main body 10, the horizontal arm 312 is located below the stopper 11, and when the functional module 30 rotates in the first direction, the stopper 11 is accommodated in the accommodating space formed by the horizontal arm 312, the vertical arm 313 and the engaging edge 32 of the engaging portion 31 and is engaged and fixed. When the vertical arm 311 of the engaging portion 31 abuts against the stopper portion 11, the functional module 30 cannot move continuously in the first direction and is in a completely engaged state. That is, at this time, the stopper portions 11 and the corresponding arms 312 are aligned in the axial direction of the main body 10, and the stopper portions 11 are located above the arms 312, so that the function module 30 cannot move in a direction away from the main body 10, that is, the function module 30 is fixed to the main body 10 and cannot be removed from the main body 10. When the module 30 is rotated in the second direction, the vertical arm 311 is gradually away from the stopping portion 11, and when the horizontal arm 311 is completely separated from the stopping portion 11, that is, when the horizontal arm 312 is completely staggered from the stopping portion 11, the engaging portion 31 is separated from the stopping portion 11, so that the function module 30 can be detached from the connecting end portion 102 by applying a force to the engaging edge 32 in a direction away from the body 10, that is, at this time, the function module 30 can be detached from the body 10, which is convenient for operation.

It should be understood that the manner of locking the engaging portion 31 with the stopping portion 11 is only an embodiment of the present invention, and the present invention is not limited to this embodiment, and any mechanism that can achieve detachable and detachable function module can be used for detachable and fixed function module and main body, such as a threaded manner, a magnetic manner, an interference manner, and so on.

Referring to fig. 5, the electronic device 100 further includes a main circuit board 40, the main circuit board 40 is disposed in the main body 10, and a memory (not shown) and a processor (not shown) may be further disposed on the main circuit board 40. Wherein the memory may be used to store computer programs and/or modules, and the processor implements various functions of the electronic device 100 by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, application programs (such as a sound playing function, an image playing function, etc.) required by a plurality of functions, and the like; the data storage area may store data (such as audio data, display data, and the like) created according to the use of the sound, and the like.

The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the electronic device 100 and various interfaces and lines connecting the various parts of the entire electronic device 100. In addition, other electronic components, such as resistors, capacitors, diodes, transistors, etc., may be disposed on the main circuit board 40, so that the electronic device 100 can perform various functions.

In some embodiments, the electronic device 100 further comprises a battery 50, and the battery 50 can supply power to the memory, the processor, and other electronic components. The battery 50 may be detachably mounted on the main circuit board 40, or may be fixedly welded to the main circuit board 40. In other embodiments, the main circuit board 40 may also be powered by an external power source (e.g., an adapter, etc.), and when the external power source is used to directly power the battery 50, the battery may be present or omitted.

Referring to fig. 6, in some embodiments, the main circuit board 40 is further provided with a first connecting member 41, and the first connecting member 41 is disposed on the main circuit board 40 and in an exposed state, and faces the functional module 30 housed in the main body 10. Correspondingly, the functional module 30 is further provided with a second connector 33 for plugging with the first connector 41, and when the functional module 30 is mounted on the body 10, the second connector 33 is plugged with the first connector 41, so that the module 30 is electrically connected with the main circuit board 40. In the present embodiment, the first connecting member 41 and the second connecting member 33 are both connectors, and only need to be directly inserted and pulled out, so that the installation and the detachment can be facilitated. Preferably, the connector is a pogo pin connector, and then the electrical connection is realized in a mode of elastic needle interference.

In some embodiments, the functional module 30 is a lighting module, the lighting module includes a cavity 301 and a light emitting element 302 disposed in the cavity 301, and the light emitting element 302 is electrically connected to the second connecting member 33. When the lighting module is mounted on the body 10, one end of the cavity 301 away from the body 10 is a light-emitting surface. In this embodiment, the light emitting surface is further provided with a touch panel, and the touch panel is used for sensing touch operation to control the lighting module to be turned on or turned off. It is understood that the light emitting element 302 can be disposed on a sub circuit board (not shown) and electrically connected to the second connector 33 through the sub circuit board. In this way, when the lighting module is mounted on the main body 10, the electronic device 100 realizes a lighting function.

Referring to fig. 7, in another embodiment, the function module 30 is a remote control module. The remote control module comprises a cavity 301 and a remote control circuit board 303 arranged in the cavity 301. The remote control circuit board 303 is electrically connected to the second connector 33. When the remote control module is installed on the body 10, one end of the cavity 301, which is far away from the body 10, is a remote control panel 305, and the remote control panel 305 is used for sensing touch and generating a sensing signal, and then sending the sensing signal to a remote control circuit board 303. Specifically, the remote control circuit board 303 may be provided with a communication module (not shown), and the remote control panel 305 senses touch and generates a corresponding sensing signal, and sends the sensing signal to an external device through the communication module to control the external device to be turned on or turned off or other functions. In this embodiment, the remote control panel is a multifunctional remote control panel, that is, the remote control panel is divided into different control areas, and each control area corresponds to different remote control devices. For example, the remote control device corresponding to the first control area is a television, the remote control device corresponding to the second control area is an air conditioner, and the remote control device corresponding to the third control area is a refrigerator. Thus, when the remote control module is installed on the body 10, the electronic device 100 can realize the function of remotely controlling other electronic devices, and because the remote control panel has a plurality of control areas, the electronic device 100 can simultaneously control a plurality of electrical appliances, and the situation that the remote controller is lost is avoided.

Referring to fig. 8, in another embodiment, the functional module 30 may also be an audio module, which includes a cavity 301 and a speaker assembly 304 disposed in the cavity 301, and the speaker assembly is electrically connected to the second connecting member 33. When the audio module is installed on the body 10, one end of the cavity 301, which is far away from the body 10, is provided with a plurality of sound holes, specifically, a speaker metal mesh. It can be understood that, in the present embodiment, the cavity 301 is a sound cavity of the speaker module. In this way, when the audio module is mounted on the main body 10, the electronic device 100 can realize an audio function.

It should be noted that, when any one of the functional modules 30 is mounted on the body 10, the main circuit board 40 is electrically connected to the sub-circuit boards in the functional module 30 through the first connector 41 and the second connector 33, that is, the main circuit board 40 supplies power to the functional module 30. The main circuit board 40 may further be provided with a wireless communication module (not shown), and the main circuit board 40 may communicate with an external device. For example, the display screen 20 may display contents stored in a memory on the main circuit board 40, and may also display video received from an external device through the wireless communication module. In addition, the display screen 20 may further include a touch area, so that the display screen 20 may further receive a touch operation of a user to perform a corresponding operation on the display content. For example, the resolution of the display content is adjusted by a touch operation.

Referring to fig. 5 again, in some embodiments, the display screen 20 is a flexible display screen, and the display screen 20 is flexibly disposed on the outer surface of the cylinder of the body 10. When the display screen 20 is in the unfolded state, the display screen 20 is rectangular. The unfolded state refers to a state in which the display screen 20 is unfolded horizontally without any folding. In the present embodiment, the display screen 20 is wrapped around the outer surface of the cylindrical side of the body 10.

In some embodiments, the connecting end portion 102 further protrudes outward in a radial direction to form a protruding edge 13 near the open end, wherein an outer surface of the protruding edge 13 is an annular arc surface. When the functional module 30 is mounted on the connecting end 102, the engaging edge 31 is flush with the outer end face of the protruding edge 13. When the display screen 20 is arranged on the outer surface of the cylinder of the body 10 in a curved manner, one side of the display screen abuts against the convex edge 13, and the other side of the display screen is flush with one end of the body 10 far away from the convex edge 13.

During assembly, the display screen 20 may be positioned into a cylinder shape having the same shape as the body 10 by a positioning jig, and then the display screen 20 is attached to the outer surface of the body 10 by an adhesive tape or liquid adhesive. In some embodiments, the display screen 20 is further electrically connected to the main circuit board 40 through the flexible circuit board 60, that is, the display content of the display screen 20 and the attribute of the display content are controlled through the main circuit board 40, wherein the attribute of the display content includes display brightness, display color, display resolution, and the like. As shown in fig. 5, the main body 10 may be formed with a groove 14, such that one end of the flexible circuit board 60 may be connected to the main circuit board 40, and the other end thereof protrudes through the groove 14 to be connected to the display screen 20. It is understood that if different display controls are to be implemented on the display screen, the different display controls may also be implemented by a software method, for example, a corresponding display control program is stored in a memory, and then the display control program is executed by a processor to implement the corresponding control method.

In other embodiments, to protect the display screen 20, for example, from being hit by a hard object, the electronic device 100 further includes a protective cover 70. The shape of the protective cover 70 matches with the shape of the body 10, that is, the protective cover is also cylindrical and is sleeved on the display screen 20. Specifically, one end of the protective cover 70 in the axial direction abuts against the convex edge 13, and the other end is flush with one end of the body 10 far away from the convex edge 13. Furthermore, for aesthetic reasons, the outer surface of the shield is flush with the outer surface of the flange 13 in the radial direction.

In other embodiments, the protection cover 70 is transparent so as not to affect the display content of the display screen 20, for example, the protection cover 70 may be made of acrylic or PMMA (polymethyl methacrylate) with high transparency and high hardness.

Referring to fig. 8 and 9, in some embodiments, in order to achieve the sealing and waterproof effects, a groove 131 is further disposed at a position where the convex edge 13 abuts against the protective cover 70, and a sealing ring 80 is disposed in the groove 131, so that the sealing ring 80 is located between the convex edge 13 and the side edge of the protective cover 70, thereby achieving the waterproof and dustproof effects. The sealing ring 80 may be made of a rubber material, so as to protect the display screen 20.

Referring to fig. 5 again, the electronic device 100 further includes a base 90, and the base 90 is disposed at an end of the body 10 away from the protruding edge 13. In some embodiments, in order to improve the heat dissipation effect of the electronic device 100, a plurality of through holes 91 are formed in the base 90, so that heat generated by the electronic device 100 during operation can be dissipated through the plurality of through holes.

In addition, referring to fig. 1, fig. 2 and fig. 5, the electronic device 100 is further provided with a power key 103, a volume adjustment key 104 and a charging interface 105. It can be understood that the power key 103, the volume adjusting key 104 and the charging interface 105 are all electrically connected to the main circuit board 40, so that the functions of turning on and off the computer and adjusting the volume can be realized by operating the keys.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and embodiments of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in specific embodiments and application ranges, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

An electronic device, comprising:

a body;

the display screen is arranged on the outer surface of the body; and

the functional module is detachably arranged on the body; the electronic device comprises a body, a functional module, a power supply module and an electronic device, wherein the functional module has corresponding functions, and when the functional module is arranged on the body, the electronic device realizes the corresponding functions through the functional module.
The electronic device of claim 1, wherein the body is hollow and comprises a receiving cavity and a connecting end; the accommodating cavity of the body is used for accommodating the functional module, and the connecting end part is used for being detachably connected with the functional module after the functional module is accommodated in the accommodating cavity.
The electronic device of claim 2, wherein a plurality of stopping portions are arranged on the inner surface of the connecting end portion of the body at intervals; the outer surface of the functional module is provided with a plurality of clamping parts which are in one-to-one correspondence with the stopping parts; when the functional module is installed in the body and is fixed relative to the body, each clamping part is clamped with the corresponding stopping part.
The electronic device according to claim 3, wherein the housing cavity of the body is cylindrical, and the functional module is cylindrical; when the functional module is arranged in the body and rotates along a first direction, each clamping part is clamped with the corresponding stopping part; when the functional module rotates along the second direction, each clamping part is separated from the corresponding stopping part.
The electronic device of claim 4, wherein the first direction and the second direction are opposite.
The electronic device according to claim 3, wherein the edge of one end of the functional module protrudes outward to form a clamping edge, and the cavity wall of the accommodating cavity of the body near the opening of the connecting end forms a supporting portion for supporting the clamping edge of the functional module; when the functional module is installed on the body, the clamping edge is abutted against the abutting part.
The electronic device of claim 6, wherein each engaging portion includes a vertical arm and a horizontal arm perpendicular to the vertical arm; the extension direction of the cross arm is the same as that of the corresponding stopping part; when the functional module is accommodated in the body, the transverse arm is positioned below the stopping part, and when the functional module rotates along a first direction, the stopping part is accommodated in an accommodating space formed by the transverse arm, the vertical arm and the clamping edge of the clamping part to be clamped and fixed; when the functional module rotates along the second direction, the vertical arm gradually gets away from the stopping part, and when the cross arm is completely separated from the stopping part, the clamping part is separated from the stopping part.
The electronic device of claim 1, wherein the electronic device further comprises:

the main circuit board is arranged in the body and is provided with a first connecting piece; the first connecting piece is arranged on the main circuit board and faces the functional module contained in the body;

the functional module is also provided with a second connecting piece, and when the functional module is arranged on the body, the second connecting piece is spliced with the first connecting piece and is electrically connected with the first connecting piece.
The electronic device of claim 8, wherein the first connector and the second connector are both connectors.
The electronic device of claim 8, wherein the functional module is a lighting module, the lighting module includes a cavity and a light-emitting element disposed in the cavity, and the light-emitting element is electrically connected to the second connecting member.
The electronic device as claimed in claim 10, wherein when the lighting module is mounted on the body, an end of the cavity away from the body is a light emitting surface; the light emitting surface is further provided with a touch control panel, and the touch control panel is used for sensing touch control operation to control the lighting module to be turned on or turned off.
The electronic device according to claim 8, wherein the function module is a remote control module, the remote control module comprises a cavity and a remote control circuit board disposed in the cavity, the remote control circuit board is disposed with a communication module, the communication module is configured to be communicatively connected with an external device, so that the remote control module controls the external device; the remote control circuit board is electrically connected with the second connecting piece.
The electronic device of claim 12, wherein when the remote control module is mounted on the body, an end of the cavity away from the body is a remote control panel, and the remote control panel is used for sensing touch operations; the remote control panel is divided into a plurality of control areas, and each control area can correspondingly control different external equipment.
The electronic device of claim 8, wherein the functional module is a speaker module, the speaker module including a cavity and a speaker assembly disposed in the cavity, the speaker assembly being electrically connected to the second connector; when the sound module is installed on the body, one end of the cavity, which is far away from the body, is provided with a plurality of sound holes.
The electronic device of claim 1, wherein the display is a flexible display, the display being flexibly disposed on an outer surface of the body.
The electronic device of claim 15, wherein the connecting end portion near the open end further protrudes outward in a radial direction to form a protruding edge, and the display screen is attached to the outer surface of the body in a curved manner, with one side abutting against the protruding edge and the other side being flush with an end of the body away from the protruding edge.
The electronic device of claim 16, further comprising a protective cover; the shape of the protective cover is matched with that of the body, and the protective cover is sleeved on the display screen.
The electronic device of claim 17, wherein a groove is further provided at the abutment of the ledge and the protective cover, and a sealing ring is provided in the groove and located between the ledge and the protective cover.
The electronic device of claim 1, wherein when the functional module is mounted on the body, the functional module is electrically connected to the body to receive power provided by the body.
An expandable device is used for installing a functional module and has corresponding functions; wherein the expandable apparatus comprises:

the body is used for detachably mounting and fixing a functional module; wherein the functional module has corresponding functions;

the display screen is arranged on the outer surface of the body; and

the main circuit board is contained in the body and used for controlling the display screen to display and controlling the functional module to realize corresponding functions.