Docking station for folding screen mobile phone

Abstract

The utility model belongs to the technical field of mobile intelligent terminal peripheral auxiliary equipment, and provides a docking station for a folding screen mobile phone, which comprises a base, and the base is provided with a plurality of expansion interfaces and a terminal joint used for being plugged with a data port of the folding screen mobile phone. The base is provided with a backrest arranged in a protruding mode and a limiting groove located in front of the backrest. The base is further provided with a sliding rail located in the limiting groove, and the sliding rail extends in the length direction of the limiting groove. The terminal connector is arranged on the sliding rail and can be controlled to move along the sliding rail so as to change the position of the terminal connector in the limiting groove. The docking station solves the technical problems that a terminal connector, used for being connected with a mobile intelligent terminal, on a docking station in the prior art is single in arrangement and cannot adapt to installation and fixation of the mobile intelligent terminal in a changing state.

Description

Technical Field

[0001] The present application belongs to the technical field of peripheral auxiliary devices for mobile smart terminals, and in particular, relates to an expansion dock for a foldable screen mobile phone. Background Art

[0002] A docking station, also known as a port replicator, is an external device designed for laptops. By duplicating or even extending the ports of a laptop, it allows the laptop to be easily connected to multiple accessories or external devices (such as power adapters, network cables, mice, external keyboards, printers, and external monitors) in one place. Laptops of the same brand can usually use the same port replicator.

[0003] As docking station technology becomes increasingly popular, docking stations have gradually been applied to mobile smart terminals, such as smart phones, tablet computers, and handheld game consoles, which can all be set on the docking station and use the expansion interface on the docking station to realize data transmission or charging functions with different external devices.

[0004] In the prior art, a docking station is generally provided with a terminal connector connected to the data port on the mobile smart terminal. However, for a mobile smart terminal with a changeable state, such as a smart phone with a folding screen, the folding screen on the phone has two states: open or folded. Before and after the change of state, the position of the data port on the folding screen phone will change, which will affect the posture of the folding screen phone placed on the docking station and affect the actual use. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an expansion dock for a foldable screen mobile phone, so as to solve the technical problem that the terminal connectors on the expansion dock of the prior art for connecting to the mobile smart terminal are arranged in a single manner and cannot be adapted to the installation and fixation of the mobile smart terminal with a changing state.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an expansion dock for a foldable screen mobile phone, including a base, the base is provided with multiple expansion interfaces and terminal connectors for plugging into the data port of the foldable screen mobile phone, the base has a backrest with a protrusion and a limit groove in front of the backrest; the base is also provided with a slide rail located in the limit groove, and the slide rail extends along the length direction of the limit groove; the terminal connector is arranged on the slide rail and can be controlled to move along the slide rail to change its position in the limit groove.

[0007] The beneficial effect of the expansion dock provided by the present application is that: compared with the prior art, for a folding screen mobile phone with a changing state, the position of the data port on the folding screen mobile phone will change before and after the changing state. The expansion dock of the present application improves the setting method of the terminal connector, and a slide rail located in the limit groove in front of the backrest is provided on the base. The terminal connector is arranged on the slide rail and can be translated along the slide rail to change the position of the terminal connector in the limit groove, which is conducive to adapting the installation and connection of the data port of the mobile smart terminal with a changing state. Allowing the folding screen mobile phone to be centered on the expansion dock before and after the changing state effectively improves the connection adaptability of the terminal connector on the expansion dock.

[0008] The controllable structure of the terminal connector is improved, and the base is also provided with a control key for linkage with the terminal connector. A slide groove is provided on the front surface of the base, and the slide groove is extended parallel to the slide rail; the control key is arranged in the slide groove and connected to the terminal connector. In this way, a person can turn the control key and drive the terminal connector to move on the slide rail at the same time to change the position of the terminal connector, thereby adapting to the position change of the data port on the folding screen mobile phone with a changing state. At the same time, it can also prevent the person's hand from directly contacting the terminal connector.

[0009] In one embodiment, the slide rail extends from the central axis of the base to both sides or any one side of the base so as to adapt to the position change range of the data port on the folding screen mobile phone before and after the state changes.

[0010] In one embodiment, the backrest has an inclined surface for the back of the folding screen mobile phone to lean against, and the terminal connector is arranged obliquely in the slide rail; wherein the inclination of the terminal connector is adapted to the inclined surface on the backrest. When the folding screen mobile phone is placed on the docking station, it can lean against the backrest at an angle, and the data port and the terminal connector can be plugged into each other, effectively improving the setting adaptability of the terminal connector.

[0011] The structure on the base is improved, and the base is also provided with a flap movably connected to the backrest, and the flap is provided with a filling block that matches the shape of the limiting groove; when the flap is closed on the terminal connector, the filling block fills the limiting groove. In this way, the expansion dock is provided with a flap to shield and protect the terminal connector, and the flap is provided with a filling block for filling the limiting groove. When the flap is closed, it forms a complete rectangular body with the base, which is convenient for storage.

[0012] In one embodiment, the filling block is provided with an escape groove for accommodating the terminal connector, and the shape of the escape groove matches the movable track of the terminal connector. When the flip cover is closed on the limit groove of the base, the terminal connector can be accommodated in the escape groove of the filling block, which effectively improves the protection effect of the terminal connector and makes the flip cover flat when closed on the base.

[0013] In one embodiment, the filling block is provided with an anti-skid pad for contacting the back of the folding screen mobile phone, and the anti-skid pad covers the surface of the filling block, thereby improving the fixing effect of the folding screen mobile phone placed on the expansion dock.

[0014] An improvement is made to the movable structure between the flap and the backrest, wherein the flap and the backrest are provided with an integrally connected flexible pad, wherein a foldable portion that can be rolled up is provided at the connection between the flap and the backrest. In this way, the flap and the backrest are provided with an integral flexible pad, which has a simple structure and is easy to process and shape. The flap can be rotated toward the backrest by utilizing the foldable portion on the flexible pad, thereby ensuring the lid opening effect.

[0015] Another improvement is made to the movable structure between the flap and the backrest. The flap and the backrest are connected by a rotating shaft. The flap can rotate toward the backrest with the rotating shaft as the axis, which can also enable the flap to achieve a rotating effect.

[0016] In one embodiment, magnetic attracting parts capable of attracting each other are provided on the top of the flip cover and the backrest, so that the flip cover can be fixed on the backrest after opening, thereby improving the fixing effect of the flip cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 1 ;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 2 ;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 3 ;

[0021] Figure 4 A schematic diagram of a foldable screen mobile phone placed in a folded state on a docking station provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of a foldable screen mobile phone in an open state placed on a docking station provided in an embodiment of the present application;

[0023] Figure 6 Schematic diagram of the three-dimensional structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 4 ;

[0024] Figure 7 A schematic diagram of the side structure of an expansion dock for a foldable screen mobile phone provided in an embodiment of the present application;

[0025] Figure 8 Schematic diagram of the three-dimensional structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 5 ;

[0026] Fig. 9 A schematic diagram of the structure of the expansion dock in a closed state of the flip cover provided in an embodiment of the present application;

[0027] Fig.10 Schematic diagram of the explosion structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 1 ;

[0028] Fig.11 Schematic diagram of the explosion structure of the expansion dock for a foldable screen mobile phone provided in an embodiment of the present application Figure 2 .

[0029] Among them, the reference numerals in the figure are:

[0030] 100- Docking station;

[0031] 200-foldable screen mobile phone;

[0032] 1-base; 11-extension interface; 12-limiting slot; 13-slide rail; 14-slide slot;

[0033] 2-terminal connector;

[0034] 3-backrest; 31-inclined surface;

[0035] 4-Control keys;

[0036] 5- flip cover; 51- filling block; 52- avoidance groove; 53- anti-slip pad;

[0037] 6-flexible pad; 61-folding portion;

[0038] 7-Magnetic parts. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] Conventional docking stations are generally provided with terminal connectors, which are used to connect to the data port on the mobile smart terminal. At the same time, the way the terminal connector is plugged into the data port on the mobile smart terminal also determines the posture of the mobile smart terminal on the docking station, that is, the mobile smart terminal can be placed on the docking station horizontally or vertically.

[0044] In actual applications, for different models of smartphones or tablets, especially the newly launched foldable screen mobile phones on the market, the screen of this foldable screen mobile phone can be folded or opened. It mainly consists of two hinged halves, which can be folded like a hinge for easy storage, or opened to form a wider large-size screen to improve the visual experience. Common foldable screen mobile phones generally have the data port set at the bottom of one half, so that the whole machine can be centered on the docking station in the folded state. However, when the screen is in the open state, the position of the data port on the mobile phone and the position of the terminal connector on the docking station will change, making it impossible for the foldable screen mobile phone in the open state to be centered on the docking station, resulting in the foldable screen mobile phone being unstable and unsightly, and easy to tip over and unable to be used.

[0045] It can be seen that the expansion docks currently on the market cannot adapt to the use of mobile smart terminals with changing states. The mobile smart terminal will change the position of the data port before and after the state changes, thereby changing its posture on the expansion dock, affecting actual use.

[0046] Here, the embodiment of the present application provides a new expansion dock for a foldable screen mobile phone, which can be used as a support base, allowing the user to place the foldable screen mobile phone on the expansion dock, so that the foldable screen mobile phone is set up for easy use. In particular, the terminal connector on the expansion dock is designed to be movable, which is conducive to adapting to the installation and connection of the data port on the foldable screen mobile phone with a changing state, and effectively solves the technical problem that the terminal connector on the traditional expansion dock is set in a single way and cannot adapt to the installation and fixation of the mobile smart terminal with a changing state. It is now described in detail.

[0047] In the examples provided in this application, please refer to Figure 1 and Figure 2 The expansion dock 100 includes a base 1, on which are disposed a plurality of expansion interfaces 11 and terminal connectors 2. The expansion interfaces 11 may include but are not limited to USB, TYPE-C, HDMI, DP, RJ45 and other interfaces. Each expansion interface 11 may include one or more interfaces disposed simultaneously on the base 1, and may be selectively disposed according to the volume of the base 1 and the available space thereon, and is not specifically limited here.

[0048] The terminal connector 2 is used to be plugged into the data port on the foldable screen mobile phone so that the foldable screen mobile phone and the expansion dock 100 can be electrically connected.

[0049] Please also read Figure 2 and Figure 3The upper end surface of the base 1 has a backrest 3 with a raised arrangement, and the expansion interface 11 can be preferably arranged on the backrest 3 to maximize the use of the available space in the backrest 3. A limiting groove 12 for the folding screen mobile phone to be embedded is formed in front of the backrest 3. In this embodiment, when the folding screen mobile phone is placed in the limiting groove 12 of the base 1, the back of the folding screen mobile phone can be against the backrest 3, so that the entire expansion dock 100 can be used as a support seat for the folding screen mobile phone.

[0050] The base 1 is also provided with a slide rail 13 located in front of the backrest 3 and in the limiting groove 12 . The slide rail 13 extends along the length direction of the limiting groove 12 so that the slide rail 13 is transversely arranged in front of the backrest 3 .

[0051] The terminal connector 2 is arranged on the slide rail 13 and can be manipulated to move along the slide rail 13, thereby changing the position of the terminal connector 2 in the limiting groove 12. In this way, the terminal connector 2 can be translated in front of the backrest 3 to change its position, which is conducive to matching the position of the data port at the bottom of the folding screen mobile phone in the opened or folded state, so that the folding screen mobile phone can be centered on the expansion dock 100 regardless of whether the screen is opened or folded, effectively ensuring the stability of the placement of the folding screen mobile phone.

[0052] Compared with the prior art, the expansion dock 100 for a foldable screen mobile phone provided in the embodiment of the present application has a change in the position of the data port on the foldable screen mobile phone before and after the change of state for a foldable screen mobile phone with a changing state. The expansion dock 100 of the present application improves the setting method of the terminal connector 2, and a slide rail 13 located in the limit groove 12 in front of the backrest 3 is provided on the base 1. The terminal connector 2 is arranged on the slide rail 13, and can be translated along the slide rail 13 to change the position of the terminal connector 2 in the limit groove 12, which is conducive to adapting the installation and connection of the data port of the mobile smart terminal with a changing state. Allowing the foldable screen mobile phone to be centered on the expansion dock 100 before and after the change of state effectively improves the connection adaptability of the terminal connector 2 on the expansion dock 100.

[0053] In practical applications, such as Figure 3 , Figure 4 and Figure 5 As shown, when the foldable screen mobile phone 200 is in the folded state, the terminal connector 2 on the docking station 100 can be moved along the slide rail 13 so that the terminal connector 2 is located on the central axis S of the base 1. The foldable screen mobile phone 200 in the folded state is directly connected to the terminal connector 2 on the docking station 100 via the data port at the bottom, so that the foldable screen mobile phone 200 in the folded state is centrally arranged on the docking station 100.

[0054] like Figure 5 and Figure 6As shown, when the screen of the foldable screen mobile phone 200 is opened, the position of the data port at the bottom of the foldable screen mobile phone 200 changes, and the data port is located on one half of the foldable screen mobile phone 200. At this time, the terminal connector 2 can be operated to move along the slide rail 13, and the terminal connector 2 can be adjusted to correspond to the position of the data port on the half of the foldable screen mobile phone 200 and plugged into each other. The foldable screen mobile phone 200 can also be centered on the docking station 100 when the screen is opened, effectively ensuring the stability of the foldable screen mobile phone 200 placed on the docking station 100.

[0055] For the operable structure of the terminal connector 2, in one embodiment of the present application, please refer to Figure 6 The base 1 is also provided with a control key 4 for linkage with the terminal connector 2. A slide groove 14 is provided on the front end surface of the base 1. The slide groove 14 is arranged parallel to the slide rail 13 on the base 1, that is, the slide groove 14 and the slide rail 13 extend in the same direction. The control key 4 is arranged on the slide groove 14 and connected to the terminal connector 2.

[0056] In this way, a person can turn the control key 4 and drive the terminal connector 2 to move on the slide rail 13 at the same time to change the position of the terminal connector 2, thereby adapting to the position change of the data port on the folding screen mobile phone with a changing state. At the same time, it can also prevent the person from directly contacting the gold fingers on the terminal connector 2, and prevent the gold fingers on the terminal connector 2 from being easily oxidized and damaged.

[0057] Regarding the opening position of the slide rail 13 on the base 1, in one embodiment of the present application, please refer to Figure 3 The slide rail 13 extends from the central axis S of the base 1 to both sides or any one side of the base 1 so as to adapt to the position change range of the data port on the folding screen mobile phone before and after the state changes.

[0058] Specifically, in this embodiment, one end of the slide rail 13 is located on the central axis S of the base 1, so that the terminal connector 2 is exactly located on the central axis S of the base 1 when it is moved to this end of the slide rail 13. When the data port at the bottom of the folding screen mobile phone in the folded state is plugged into the terminal connector 2, it is exactly centered on the expansion dock 100.

[0059] The other end of the slide rail 13 extends toward one side of the base 1, so that the terminal connector 2 can move toward the other end along the slide rail 13 to correspond to the position of the data port at the bottom of the folding screen mobile phone in the screen-opened state, and can be plugged into each other, so that the folding screen mobile phone in the screen-opened state can also be centrally placed on the docking station 100. This helps to reduce the size of the opening on the base 1, thereby reducing the risk of foreign objects entering the base 1.

[0060] In another embodiment of the present application (not shown), the slide rail 13 can be centrally opened on the central axis S of the base 1, and the two ends of the slide rail 13 serve as the data port of the folding screen mobile phone after the change state. In this way, the offset direction of the data port of the folding screen mobile phone when the screen is open is not restricted, which is conducive to adapting the data port on the folding screen mobile phone to the screen open state. The data port is offset to either side and falls within the displacement range of the terminal connector 2. When the terminal connector 2 is moved to the end of either side of the slide rail 13, it can correspond to the position of the data port on the folding screen mobile phone in the screen open state and plug into each other, thereby improving the connection adaptability of the terminal connector 2 on the expansion dock 100 of the present application.

[0061] For the structure on the backrest 3, in one embodiment of the present application, please refer to Figure 7 The front end surface of the backrest 3 has an inclined surface 31 for the back of the folding screen mobile phone to abut against. In order to match the inclined surface 31 on the backrest 3, the terminal connector 2 is also inclined in the slide rail 13, and the inclination of the terminal connector 2 is adapted to the inclined surface 31 on the backrest 3.

[0062] In this way, when the foldable screen mobile phone is placed on the expansion dock 100, it can be tilted against the backrest 3, and the data port and the terminal connector 2 can be plugged into each other, effectively improving the setting adaptability of the terminal connector 2.

[0063] In actual application, since the terminal connector 2 is exposed on the base 1, it is easy to be damaged by external force. Especially when it is stored, it is easy to be worn by other adjacent objects, or even squeezed and broken. Therefore, it is necessary to set a protective structure for the terminal connector 2 on the docking station 100.

[0064] To this end, in one embodiment of the present application, please refer to Figure 8 and Fig. 9 The base 1 is also provided with a flap 5, which is movably connected to the top of the backrest 3 so that the flap 5 can be opened and closed on the limiting groove 12 of the base 1, which is beneficial to shielding and protecting the terminal connector 2, thereby preventing the terminal connector 2 from being easily damaged by external force.

[0065] The flip cover 5 is provided with a filling block 51 , which is adapted to the shape of the limiting groove 12 . When the flip cover 5 is covered on the terminal connector 2 , the filling block 51 is filled in the limiting groove 12 .

[0066] like Fig. 9 As shown, the flip cover 5 forms a complete rectangular body with the base 1 when closed, which is beneficial to improving the overall aesthetics and structural strength of the expansion dock 100 and facilitating the storage of the expansion dock.

[0067] In one embodiment of the present application, please refer to Figure 8 and Fig.10 The filling block 51 is provided with an escape groove 52 for accommodating the terminal connector 2, and the shape of the escape groove 52 matches the moving track of the terminal connector 2. When the flip cover 5 is covered on the limiting groove 12 of the base 1, the terminal connector 2 can be received in the escape groove 52 of the filling block 51, which effectively improves the protection effect of the terminal connector 2 and makes the flip cover 5 flat when it is covered on the base 1.

[0068] Among them, the above-mentioned avoidance groove 52 can be one or more groove bodies, the position of which cooperates with the movable track of the terminal connector 2 on the slide rail 13, so that the terminal connector 2 can be accommodated in the groove body of the avoidance groove 52 regardless of its position on the slide rail 13.

[0069] In this embodiment, if Figure 8 and Fig.10 As shown, at least two avoidance grooves 52 are provided on the filling block 51, and the positions of the two avoidance grooves 52 correspond to the two end positions of the slide rail 13 respectively, so that the terminal connector 2 can be embedded with the avoidance groove 52 at the corresponding position no matter which end of the slide rail 13 it moves to.

[0070] In other embodiments (not shown), the avoidance groove 52 may be a long groove opened on the filling block 51, and the length of the long groove matches the length of the slide rail 13, so that the terminal connector 2 can be accommodated in the avoidance groove 52 when it stays at any position of the slide rail 13.

[0071] In one embodiment of the present application, see Fig.10 The filling block 51 is also provided with an anti-skid pad 53, which covers the surface of the filling block 51 and is used to contact the back of the folding screen mobile phone, thereby improving the fixing effect of the folding screen mobile phone placed on the expansion dock 100.

[0072] In this embodiment, the anti-skid pad 53 may preferably be made of silicone material, and the damping property of the silicone material is utilized to effectively improve the anti-skid effect.

[0073] The movable structure between the flap 5 and the top of the backrest 3 includes but is not limited to the following forms:

[0074] In one embodiment of the present application, see Fig.11 The flap 5 and the backrest 3 are provided with a flexible pad 6 integrally connected. The flexible pad 6 has a folding portion 61 located at the connection between the flap 5 and the backrest 3, and the folding portion 61 can be rolled up when the flap 5 is turned up, so that the entire flap 5 is turned over and abuts against the top surface of the backrest 3.

[0075] At this time, the filling block 51 on the flip cover 5 is combined with the backrest 3 up and down, which is beneficial to increase the contact area with the back of the folding screen mobile phone, thereby improving the fixing effect of the folding screen mobile phone placed on the expansion dock 100.

[0076] It can be seen that the flexible pad 6 integrally connected to the flip cover 5 and the backrest 3 has a simple structure and is easy to process and shape. The flip cover 5 can be rotated onto the backrest 3 by utilizing the folding portion 61 on the flexible pad 6 to ensure the opening effect.

[0077] In another embodiment of the present application (not shown), the flap 5 is connected to the backrest 3 via a rotating shaft (not shown), and the flap 5 can rotate onto the backrest 3 around the rotating shaft, which can also achieve a rotating effect.

[0078] With respect to the fixed state of the flip cover 5 after it is opened, the flip cover 5 needs to be fixed to prevent the flip cover 5 from being easily loosened after it is opened. Fig.11 , a magnetic attraction member 7 that can be magnetically attracted to each other can be preferably provided on the top of the flip cover 5 and the backrest 3. The flip cover 5 after opening can be fixed on the backrest 3, thereby improving the fixing effect of the flip cover 5.

[0079] Specifically, for the structure of the magnetic member 7, in view of the above-mentioned use of the flexible pad 6, a magnetic sheet corresponding to the position may be provided inside the flexible pad 6. In this embodiment, at least two magnetic sheets may be provided inside the flexible pad 6, one sheet being located on the flip cover 5 and the other being located on the backrest 3, and the two magnetic sheets are respectively located on both sides of the folding portion 61 on the flexible pad 6. In this way, after the flip cover 5 is opened, the magnetic sheet built into the flexible pad 6 is used to magnetically attract the flip cover 5 to the top of the backrest 3, thereby ensuring the fixing effect of the flip cover 5.

[0080] In addition, for the above-mentioned structure connected by a rotating shaft, magnets and magnets with corresponding positions, or magnets and metals that can be magnetically attracted (such as iron, etc.) can be provided on the top of the flap 5 and the backrest 3, so that after the flap 5 is opened by rotating the rotating shaft, it can also be magnetically fixed to the backrest 3.

[0081] 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 docking station for a foldable screen mobile phone, characterized in that: It includes a base, which is provided with a plurality of expansion interfaces and terminal connectors for plugging into the data port of a folding screen mobile phone, the base having a backrest with a protrusion and a limiting groove in front of the backrest; the base is also provided with a slide rail located in the limiting groove, and the slide rail extends along the length direction of the limiting groove; the terminal connector is arranged on the slide rail and can be manipulated to move along the slide rail to change its position in the limiting groove.

2. The expansion dock for a foldable screen mobile phone according to claim 1, characterized in that: The base is also provided with a control key for linkage with the terminal connector. A slide groove is provided on the front end surface of the base, and the slide groove is extended parallel to the slide rail; the control key is arranged in the slide groove and connected with the terminal connector.

3. The expansion dock for a foldable screen mobile phone according to claim 1, characterized in that: The slide rail extends from the central axis of the base to both sides or any one side of the base.

4. The expansion dock for a foldable screen mobile phone according to claim 1, characterized in that: The backrest has an inclined surface for the back of the folding screen mobile phone to rest against, and the terminal connector is arranged obliquely in the slide rail; wherein the inclination of the terminal connector is adapted to the inclined surface on the backrest.

5. The expansion dock for a foldable screen mobile phone according to any one of claims 1 to 4, characterized in that: The base is also provided with a flap movably connected to the backrest, and the flap is provided with a filling block that matches the shape of the limiting groove; when the flap is closed on the terminal connector, the filling block fills the limiting groove.

6. The expansion dock for a foldable screen mobile phone according to claim 5, characterized in that: The filling block is provided with an escape groove for accommodating the terminal connector, and the shape of the escape groove matches the movable track of the terminal connector.

7. The expansion dock for a foldable screen mobile phone according to claim 5, characterized in that: The filling block is provided with an anti-skid pad for contacting the back of the folding screen mobile phone, and the anti-skid pad covers the surface of the filling block.

8. The expansion dock for a foldable screen mobile phone according to claim 5, characterized in that: A flexible pad connected in one piece is arranged on the flap and the backrest, wherein a folding portion capable of rolling up is arranged at the connection between the flap and the backrest.

9. The expansion dock for a foldable screen mobile phone according to claim 5, characterized in that: The flap is connected to the backrest via a rotating shaft, and the flap can rotate toward the backrest with the rotating shaft as an axis.

10. The expansion dock according to claim 5, characterized in that: The flip cover and the top of the backrest are provided with magnetic attracting parts which can attract each other magnetically.

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