Extension device for terminal and live broadcast system

Abstract

The embodiment of the utility model discloses an extension device for a terminal and a live broadcast system, the extension device for the terminal comprises a shell, a function extension module and a heat dissipation module, in the use process, the shell can be connected with the terminal, the function extension module is in communication connection with the terminal, and the heat dissipation module is arranged, so that the function extension module can be connected with the terminal; the function extension module is connected with the terminal, and a part of functions of the terminal can be transferred to the extension device for the terminal, so that heat energy generated by the terminal is reduced, and long-time high-performance use of the terminal is facilitated; furthermore, the heat dissipation module is located between the installation side and the function extension module, the shell is connected to the terminal, heat dissipation can be conducted on the terminal and the function extension module at the same time through the heat dissipation module, the temperature of the terminal and the temperature of the terminal extension device can be further reduced, and long-time use of the terminal and the terminal extension device is better facilitated.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of communication terminals, in particular to an extension device for a terminal and a live broadcast system. BACKGROUND

[0002] With the increasing frequency of use of mobile terminals such as mobile phones, tablet computers and other mobile terminals, and the increasing power of the devices in the mobile terminals, the mobile terminals in the traditional technology are difficult to guarantee the heat dissipation efficiency during long-time use.

[0003] Taking the network live broadcast industry as an example, with the rapid development of Internet technology, the network live broadcast industry has shown explosive growth in recent years. From the emergence of live broadcast platforms to the innovation of various live broadcast contents, network live broadcast is gradually becoming an indispensable part of people's lives. Currently, a mobile phone or a live broadcast machine is usually used as a live broadcast device. The continuous long-time use of the mobile phone and the live broadcast machine will cause the temperature of the mobile phone to rise, affecting the performance of the mobile phone and further affecting the live broadcast effect. UTILITY MODEL CONTENT

[0004] A series of simplified concepts are introduced in the utility model content part, which will be further described in detail in the specific implementation mode part. This part of the utility model does not mean to try to limit the key features and necessary technical features of the claimed technical solution, nor does it mean to try to determine the protection scope of the claimed technical solution.

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the first aspect of the utility model provides an extension device for a terminal.

[0007] The second aspect of the utility model provides a live broadcast system.

[0008] Therefore, according to the first aspect of the embodiment of the present application, an extension device for a terminal is provided, which comprises:

[0009] The shell is used for connecting to one side of the terminal, which is the mounting side;

[0010] The function expansion module is arranged in the shell and is used for communication connection with the terminal;

[0011] The heat dissipation module is located between the mounting side and the function expansion module.

[0012] In a feasible implementation mode, the heat dissipation module comprises:

[0013] The heat conduction sheet is arranged on the inner wall of the mounting side of the shell;

[0014] a heat dissipation fin base connected to the shell;

[0015] a heat dissipation member connected to the heat dissipation fin base.

[0016] In an embodiment, the shell comprises:

[0017] a cover plate and a seat body, the mounting side is formed on the cover plate, the heat conduction fins are connected to the cover plate, the heat dissipation fin base is connected to the seat body, and the heat conduction medium is coated or attached on the heat conduction fins.

[0018] In an embodiment, the heat dissipation member comprises:

[0019] a heat conduction medium, a refrigeration fin and a fan arranged in sequence along the mounting side to the seat body.

[0020] In an embodiment, the functional expansion module comprises:

[0021] a support connected to the shell;

[0022] a 5G antenna connected to the support;

[0023] a 5G module connected to the shell;

[0024] a plurality of expansion ports provided in the 5G module;

[0025] a plurality of plug-in ports provided on the shell and arranged opposite to the expansion ports;

[0026] a plug connected to the 5G module at one end and to a terminal at the other end.

[0027] In an embodiment, the expansion ports comprise: a TYPEC interface, an HDMI interface and a SIM card plug-in port; wherein the TYPEC interface is at least two; and / or

[0028] a receiving groove is formed on the outer wall of the shell, and the plug is used to be received in the receiving groove.

[0029] In an embodiment, the terminal expansion device further comprises:

[0030] a fixing assembly connected to the mounting side and used to detachably connect the shell to the terminal.

[0031] In an implementable embodiment, the fixing assembly comprises: a sealing plate connected to the inner wall of the mounting side to form a moving space between the mounting side and the sealing plate; a clamping plate movably arranged in the moving space; and a reset member connected to the clamping plate and the shell.

[0032] In an implementable embodiment, the fixing assembly comprises: a magnetic member arranged on the shell for magnetic adsorption to the terminal.

[0033] According to a second aspect of the embodiments of the present application, a live broadcast system is provided, comprising: a terminal; and the terminal expansion device according to any one of the technical solutions.

[0034] Compared with the prior art, the utility model at least has the following beneficial effects:

[0035] The terminal expansion device provided by the embodiments of the present application comprises a shell, a function expansion module and a heat dissipation module. In use, the shell is connected to the terminal, the function expansion module is communicatively connected to the terminal, and the heat dissipation module is arranged. The function expansion module is connected to the terminal. First, the function of the terminal can be expanded, the communication capability and the computing power of the terminal are enriched, the terminal runs more smoothly, and the heat dissipation of the terminal is reduced. Second, part of the function of the terminal can be transferred to the terminal expansion device, the heat generated by the terminal is reduced, and the terminal can be used for a long time with high performance. Further, the heat dissipation module is located between the mounting side and the function expansion module, and the shell is connected to the terminal. The heat dissipation module can dissipate heat for the terminal, the temperature of the terminal can be further reduced, and the terminal and the terminal expansion device can be used for a long time.

[0036] The above description is only a summary of the technical scheme of the utility model, in order to enable the technical means of the utility model to be more clearly understood, the specific embodiments of the utility model can be implemented according to the content of the specification, and in order to enable the above and other purposes, characteristics and advantages of the utility model to be more obvious and easy to understand, the specific embodiments of the utility model are described below. BRIEF DESCRIPTION OF DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the scope of the present application. Moreover, the same reference numerals in different drawings represent the same or similar elements. In the drawings:

[0038] Figure 1 Fig. 1 is a schematic structural diagram of a terminal expansion device according to an embodiment of the present application;

[0039] Figure 2A schematic structural diagram of a split state of an extension device for a terminal according to an embodiment of the present application is provided;

[0040] Figure 3 A schematic structural diagram of a split state of a live broadcast system according to an embodiment of the present application is provided.

[0041] wherein, Figures 1 to 3 The correspondence between the reference signs and the component names in the accompanying drawings is as follows:

[0042] 110 housing, 120 function extension module, 130 heat dissipation module, 140 fixing assembly, 210 terminal;

[0043] 111 cover plate, 112 seat body, 113 socket, 114 accommodating groove;

[0044] 121 bracket, 122-5G module, 123 extension port, 124 plug, 1231 TYPEC interface, 1232 HDMI interface, 1233 SIM card socket;

[0045] 131 heat conduction sheet, 132 heat dissipation sheet base, 133 heat dissipation piece, 1331 heat conduction medium, 1332 refrigeration sheet, 1333 fan;

[0046] 141 sealing plate, 142 clamping plate, 143 reset piece, 144 magnetic piece. DETAILED DESCRIPTION

[0047] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the technical solutions provided by the present application. However, it will be apparent to one of ordinary skill in the art that the technical solutions provided by the present application can be implemented without one or more of these details.

[0048] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the stated features, integers, steps, operations, elements, and / or components exist, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0049] Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be implemented in many different ways and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments have been provided merely for the purposes of disclosure and to fully and completely disclose the present application to those skilled in the art. It should be understood that these embodiments are not to be construed as limiting the present application in any manner.

[0050] As shown in Figure 1 and Figure 2 A first aspect of the embodiments of the present application provides an extension device for a terminal, comprising: a housing 110, the housing 110 being used for being connected to one side of the terminal as a mounting side; a function extension module 120, the function extension module 120 being arranged in the housing 110 and being used for being communicatively connected with the terminal; and a heat dissipation module 130, the heat dissipation module 130 being located between the mounting side and the function extension module 120.

[0051] The extension device for a terminal provided by the embodiments of the present application comprises the housing 110, the function extension module 120 and the heat dissipation module 130. In use, the housing 110 can be connected with the terminal, the function extension module 120 can be communicatively connected with the terminal, and the heat dissipation module 130 can be arranged. The function extension module 120 is connected with the terminal. In a first aspect, the function of the terminal can be extended, the communication capability and the computing power of the terminal can be enriched, the terminal can run more smoothly, and the heat dissipation of the terminal can be reduced. In a second aspect, part of the function of the terminal can be transferred to the extension device for a terminal, the heat energy generated by the terminal can be reduced, and the terminal can be used for a long time with high performance. Further, the heat dissipation module 130 is located between the mounting side and the function extension module 120, the housing 110 is connected with the terminal, and the heat dissipation module 130 can dissipate heat for the terminal. The temperature of the terminal can be further reduced, and the terminal can be used for a long time.

[0052] As shown in Figure 2 In a feasible implementation, the heat dissipation module 130 comprises: a heat conduction sheet 131, the heat conduction sheet 131 being arranged on an inner wall of the mounting side of the housing 110; a heat dissipation sheet base 132, the heat dissipation sheet base 132 being connected to the housing 110; and a heat dissipation piece 133, the heat dissipation piece 133 being connected to the heat dissipation sheet base 132.

[0053] In the technical solution, the structure of the heat dissipation module 130 is further provided. The heat dissipation module 130 can comprise the heat conduction sheet 131, the heat dissipation sheet base 132 and the heat dissipation piece 133. The heat conduction sheet 131 is arranged on the mounting side of the housing 110. In use of the terminal, the heat conduction sheet 131 is attached to the housing 110, and the housing 110 is attached to the terminal. The heat conduction sheet 131 can conduct heat for the terminal, and the terminal can be dissipated.

[0054] In the technical scheme, the heat dissipation fin base 132 is arranged in the shell 110, and the heat dissipation fin base 132 provides a mounting position for the heat dissipation member 133, and the heat dissipation fins on the heat dissipation fin base 132 also provide a terminal heat dissipation effect, thereby further improving the heat dissipation efficiency. In combination with the heat dissipation member 133, the heat dissipation effect is further improved, and the terminal can maintain excellent performance in a long time use state.

[0055] As shown in Figure 2 In an available embodiment, the shell 110 includes a cover plate 111 and a seat body 112, the mounting side is formed on the cover plate 111, the heat conduction fin 131 is connected to the cover plate 111, and the heat dissipation fin base 132 is connected to the seat body 112.

[0056] In the technical scheme, the structure of the shell 110 is further provided, the shell 110 can include the cover plate 111 and the seat body 112 connected to the cover plate 111, the connection of the cover plate 111 and the seat body 112 can form an accommodation space, and the mounting position of the functional expansion module 120 and the heat dissipation module 130 is provided. The heat conduction fin 131 is attached to the cover plate 111, which is convenient for heat dissipation of the terminal and the terminal expansion device. The heat dissipation fin base 132 is connected to the seat body 112, and the cover plate 111 is connected to the seat body 112, so that the structure of the terminal expansion device is more compact, the mechanical strength is higher, and the probability of loosening or shaking of the heat dissipation assembly is reduced.

[0057] As shown in Figure 2 In an available embodiment, the heat dissipation member 133 includes a heat conduction medium 1331, a refrigeration fin 1332 and a fan 1333 arranged in sequence from the mounting side to the seat body 112, and the heat conduction medium 1331 is coated or attached to the heat conduction fin 131.

[0058] In the technical scheme, the structure of the heat dissipation member 133 is further provided, the heat dissipation member 133 can include the heat conduction medium 1331, the refrigeration fin 1332 and the fan 1333, based on which the refrigeration fin 1332 can generate cold energy in the working process of the heat dissipation member 133, the cold energy can be transmitted through the heat conduction medium 1331 and the heat conduction fin 131, and then the terminal is heat dissipated, thereby further guaranteeing the reliability of the terminal in a long time work.

[0059] It can be understood that the heat conduction medium 1331 includes heat conduction silica gel or heat conduction silica gel sheet.

[0060] As shown in Figure 2As shown, in an available embodiment, the function expansion module 120 comprises: a bracket 121 connected to the shell 110; a 5G antenna connected to the bracket 121; a 5G module 122 connected to the shell 110; a plurality of expansion ports 123 provided on the 5G module 122; a plurality of sockets 113 provided on the shell 110 and arranged opposite to the expansion ports 123; and a plug 124, one end of which is connected to the 5G module 122 and the other end of which is used to be connected to a terminal.

[0061] In this technical solution, the structure of the function expansion module 120 is further provided, which can include the settings of the 5G antenna and the 5G module 122. It can meet the needs of data interaction of the terminal, and can ensure that the terminal has a good network environment, so that the terminal can be used outdoors, especially for outdoor live streaming. When high-frequency data interaction is required, the 5G module 122 with the settings of the 5G antenna and the 5G module 122 can realize faster data transmission and smoother communication, and can support real-time transmission of high-definition, ultra-high-definition, or even 4K and 8K quality. This means that viewers can watch clearer and more detailed video images, improving the viewing experience of live streaming. The low-latency feature of the 5G module 122 helps to reduce the phenomenon of lag and delay during live streaming. This is particularly important for live streaming scenarios that require real-time interaction, such as sports event live streaming and online education, which can ensure instant feedback and seamless communication between viewers and hosts. Further, through the settings of the function expansion module 120, the 5G module 122 has high-capacity characteristics, which can support a large number of users to watch live streaming at the same time. In densely populated areas such as sports event sites and concerts, the 5G module 122 can ensure that users can use live streaming services smoothly, avoiding the phenomenon of live streaming lag or interruption caused by network congestion.

[0062] In this technical solution, the function expansion module 120 can also include a bracket 121, which provides a mounting position for the 5G antenna through the settings of the bracket 121.

[0063] In this technical solution, the 5G module 122 can be provided on a circuit board, and the connection of the plurality of expansion ports 123 with the 5G module 122 can enrich the data flow mode of the function expansion module 120 and increase the applicable scenarios of the function expansion module 120.

[0064] In this technical solution, the sockets 113 are provided on the shell 110, which facilitates the connection of other devices with the 5G module 122 through the sockets 113.

[0065] In this technical solution, the plug 124 is provided, which facilitates the communication connection between the function expansion module 120 and the terminal.

[0066] As Figure 2 shown, in a feasible implementation, the expansion port 123 includes: a TYPEC interface 1231, an HDMI interface 1232, and a SIM card socket 1233; wherein the TYPEC interface 1231 is at least two.

[0067] In this technical solution, the specific style of the expansion port 123 is further provided, and through the opening of the TYPEC interface 1231, the data transmission between the function expansion module 120 and the terminal can be performed, especially the interface supports high-speed data transmission, which can be used for connecting computers, mobile phones, tablets, cameras and other devices, realizing file transmission, data synchronization, backup and other functions; video output can be performed to transmit the image or video content on the device to an external display or television for display. This function is particularly suitable for scenarios that need to watch videos, presentations or games on a large screen; peripherals such as keyboards, mice, printers, cameras, etc. can be connected. This allows users to connect multiple peripherals through one interface, improving work efficiency. Further, through the TYPEC interface 1231 being two or more, it is more convenient for the terminal to connect and expand the expansion device.

[0068] In this technical solution, through the selection of the HDMI interface 1232, high-quality high-definition video signals can be transmitted, supporting various high-definition video formats such as 720P, 1080P, 4K, 8K, etc. This makes the HDMI interface 1232 become an ideal choice for connecting high-definition televisions, monitors, projectors and other devices, and can present clear, delicate and realistic picture effects. High-quality audio signals can be transmitted simultaneously. Support multi-channel surround sound audio formats such as Dolby TrueHD, DTS-HD Master Audio, etc., to bring users a more shocking and realistic auditory experience. This makes the HDMI interface 1232 when connecting home theater systems, sound equipment, etc. can provide all-round audio and video enjoyment. It can further improve the live streaming effect of the terminal.

[0069] In this technical solution, through the setting of the SIM card socket 1233, the terminal expansion device can be inserted with a SIM card, which can make the communication of the terminal expansion device more convenient and facilitate the provision of 5G networks.

[0070] As Figure 2As shown in the figure, in an available embodiment, the outer wall of the shell 110 is formed with a receiving groove 114, and the plug 124 is used to be received in the receiving groove 114. In this way, when the terminal expansion device does not need to be connected with other devices through the extension device or does not need to be connected with other devices through the plug 124, the plug 124 can be received in the receiving groove 114, so that the appearance of the terminal expansion device is more neat, and meanwhile the terminal expansion device can protect the plug 124.

[0071] In an available embodiment, the terminal expansion device further comprises a fixing assembly 140 connected to the mounting side and used to detachably connect the shell 110 to the terminal.

[0072] In this technical scheme, the fixing assembly 140 is arranged, so that the connection between the shell 110 and the terminal is facilitated, the connection between the terminal and the terminal expansion device is more reliable, and the probability that the terminal expansion device is loosened or dropped from the terminal is reduced.

[0073] As shown in the figure, Figure 2 In an available embodiment, the fixing assembly 140 comprises a cover plate 141 connected to the inner wall of the mounting side and forming a moving space with the mounting side, a clamping plate 142 movably arranged in the moving space at one end, and a reset member 143 connected to the clamping plate 142 and the shell 110.

[0074] In this technical scheme, the structure of the fixing assembly 140 is further provided, and the fixing assembly 140 can comprise the cover plate 141, the clamping plate 142 and the reset member 143. Based on this, the cover plate 141 is connected to the cover plate 111 of the shell 110 to form a space for the movement of the clamping plate 142. When it is needed to connect the terminal expansion device to the terminal, the clamping plate 142 can be pulled to move away from the shell 110, and then the shell 110 is attached to the terminal. After that, the clamping plate 142 is released and clamped on the terminal under the reset action of the reset member 143, so that the connection between the terminal expansion device and the terminal is more reliable.

[0075] In some examples, in order to improve the reliability of the connection between the terminal expansion device and the terminal, the clamping plate 142 can be two, and the two clamping plates 142 are clamped on the terminal, so that the fixation of the terminal expansion device is more reliable.

[0076] In some examples, in order to simplify the structure of the fixing assembly 140, one of the two clamping plates 142 can be movably connected to the shell 110, and the other can be fixedly connected to the shell 110.

[0077] As shown in the figure,Figure 2 As shown in a feasible implementation, the fixing assembly 140 comprises a magnetic piece 144 arranged on the shell 110 and used for magnetically adsorbing the terminal.

[0078] In the technical solution, the fixing assembly 140 can further comprise the magnetic piece 144, and the shell 110 can be connected with the terminal in a magnetic adsorption manner, so that the connection between the shell 110 and the terminal is more reliable. It can be understood that the magnetic piece 144 and the clamping plate 142 can be used simultaneously, so that the connection between the terminal and the expansion device is more reliable.

[0079] According to a second aspect of the present application, a live broadcast system is provided, comprising: a terminal 210; and the terminal expansion device according to any one of the above technical solutions.

[0080] As Figures 1 to 3 As shown in the live broadcast system provided by the present application, the live broadcast system comprises the terminal expansion device according to any one of the above technical solutions, so the live broadcast system has all the beneficial effects of the terminal expansion device according to the above technical solutions.

[0081] In the live broadcast system provided by the present application, the terminal 210 is used for connecting with the terminal expansion device. In use, the shell 110 can be connected with the terminal 210, and the function expansion module 120 can be connected in communication with the terminal 210. In combination with the arrangement of the heat dissipation module 130, the function expansion module 120 is connected with the terminal 210. On the one hand, the function of the terminal 210 can be expanded, and the communication capability and computing power of the terminal 210 can be enriched, so that the terminal 210 runs more smoothly, and the heat dissipation amount of the terminal 210 is reduced. On the other hand, part of the function of the terminal 210 can be transferred to the terminal expansion device 210, so that the heat energy generated by the terminal 210 is reduced, and the long-time high-performance use of the terminal 210 is facilitated. In further combination with the arrangement that the heat dissipation module 130 is located between the installation side and the function expansion module 120, and the shell 110 is connected with the terminal 210, the heat dissipation module 130 can simultaneously dissipate heat for the terminal 210 and the function expansion module 120, so that the temperature of the terminal 210 and the terminal expansion device can be further reduced, and the long-time use of the terminal 210 and the terminal expansion device is facilitated. Thus, the live broadcast effect is improved.

[0082] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and other terms should be broadly understood, for example, "connecting" can be fixed connection, can also be detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0083] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0084] In the description of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An extension device for a terminal, characterized by The application relates to a terminal extension device. The terminal extension device comprises: a shell, which is used for being connected to a terminal and has a mounting side; a function extension module, which is arranged in the shell and is used for being connected in communication with the terminal; 2. The terminal extension device according to claim 1, characterized by a heat dissipation module, which is located between the mounting side and the function extension module. The heat dissipation module comprises: a heat conduction sheet, which is arranged on an inner wall of the mounting side of the shell; a heat dissipation sheet base, which is connected to the shell; 3. The terminal extension device according to claim 2, wherein a heat dissipation piece, which is connected to the heat dissipation sheet base. The shell comprises:

4. The terminal extension device according to claim 3, wherein a cover plate and a seat body, the mounting side is formed on the cover plate, the heat conduction sheet is connected to the cover plate, and the heat dissipation sheet base is connected to the seat body. The heat dissipation piece comprises:

5. The extension device for a terminal according to any one of claims 1 to 4, characterized by a heat conduction medium, a refrigeration sheet and a fan, which are arranged in sequence from the mounting side to the seat body, and the heat conduction medium is coated or attached on the heat conduction sheet. The function extension module comprises: a support, which is connected to the shell; a 5G antenna, which is connected to the support; a 5G module, which is connected to the shell; 6. The terminal extension device according to claim 5, wherein a plurality of extension ports, which are arranged on the 5G module. The function extension module further comprises: a plurality of plug-in ports, which are arranged on the shell and are arranged opposite to the extension ports; a plug, one end of which is connected to the 5G module, and the other end of which is used for being connected to a terminal.

7. The terminal extension device according to claim 6, wherein the extension ports comprise a TYPEC interface, an HDMI interface and a SIM card plug-in port; wherein the TYPEC interface is at least two; and / or 8. The extension device for a terminal according to any one of claims 1 to 4, characterized by an accommodating groove is formed on an outer wall of the shell, and the plug is used for being accommodated in the accommodating groove. Further comprising:

9. The terminal extension device of claim 8, wherein a fixing assembly, which is connected to the mounting side and is used for detachably connecting the shell to the terminal. The fixing assembly comprises: a sealing plate, which is connected to an inner wall of the mounting side and forms a movable space between the mounting side; a clamping plate, one end of which is movably arranged in the movable space; a reset piece, which is connected to the clamping plate and the shell; and / or 10. A live system, characterized by a magnetic piece, which is arranged on the shell and is used for being magnetically adsorbed to the terminal. The application further relates to a terminal and the terminal extension device. The terminal comprises: a terminal; and the terminal extension device according to any one of claims 1 to 9.

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