A foldable push-pull type dual screen display device with lock

Abstract

The application relates to a foldable push-pull type double-screen display device with a lock, and mainly solves the technical problems of complex structure, large weight, inconvenience in carrying, and poor reading experience of an existing double-screen display device. The device comprises a first display mechanism, a second display mechanism, a first interlocking mechanism, a second interlocking mechanism, a first latch mechanism, a second latch mechanism, a first hinge and a supporting sliding mechanism; one end of the first display mechanism and the second display mechanism is connected through the first interlocking mechanism; the first latch mechanism and the second latch mechanism both comprise a latch assembly and a lock assembly; one end of the second interlocking mechanism is used for being connected with a host computer, and the other end is connected with the latch assembly of the first latch mechanism; one end of the first hinge is connected with the host computer, and the other end is connected with the latch assembly of the second latch mechanism; the moving end of the supporting sliding mechanism is arranged on the first display mechanism and the second display mechanism, and the fixed end is connected with the second interlocking mechanism and the first hinge respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to a display device, in particular to a foldable push-pull type double-screen display device with locking. BACKGROUND

[0002] The existing double-screen display device is usually an up-down double-screen device or a pull-out double-screen device. The up-down double-screen device has a large span, which causes the user to constantly look up and down or scan the screen up and down, resulting in user discomfort. At the same time, the up-down double-screen device is blocked by the keyboard and other desktop objects, requiring the user to be far away from the screen, which makes it difficult for the user to read the screen content. In addition, the up-down double-screen device is heavy, which affects the convenience of carrying. The pull-out double-screen device uses a pull-out slide rail structure. Since one screen needs to be pulled down from the top to the plane, the pull-out slide rail structure needs to occupy a relatively large space, making the overall device inevitably thicker and heavier, which greatly affects the convenience of carrying.

[0003] In summary, the existing double-screen display device has the disadvantages of complex structure, large weight, inconvenience of carrying, and poor reading experience. SUMMARY

[0004] The purpose of the present application is to solve the technical problems of the existing double-screen display device, such as complex structure, large weight, inconvenience of carrying, and poor reading experience, and to provide a foldable push-pull type double-screen display device with locking.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] A foldable push-pull type double-screen display device with locking, characterized in that:

[0007] It comprises a first display mechanism, a second display mechanism, a first interlocking mechanism, a second interlocking mechanism, a first latch mechanism, a second latch mechanism, a first hinge, and a support sliding mechanism.

[0008] One end of the first display mechanism and the second display mechanism is connected by the first interlocking mechanism, and the first interlocking mechanism is used for folding, unfolding, and locking of the first display mechanism and the second display mechanism.

[0009] The first latch mechanism and the second latch mechanism are the same structure, each comprising a latch assembly and a lock assembly, which cooperate to form a separable locking structure. One end of the second interlocking mechanism is used for connecting with the host, and the other end is connected with the latch assembly of the first latch mechanism. The second interlocking mechanism is used for folding, opening, and locking of the first display mechanism and the second display mechanism relative to the host.

[0010] One end of the first hinge is connected with the host computer, and the other end is connected with the collision component of the second latch mechanism; the moving end of the support sliding mechanism is arranged at the lower end of the first display mechanism and the second display mechanism, and the fixed end is connected with the other end of the second interlocking mechanism and the other end of the first hinge respectively;

[0011] The left end of the first display mechanism is defined as the end away from the first interlocking mechanism, and the right end of the second display mechanism is defined as the end away from the first interlocking mechanism;

[0012] The lock component of the first latch mechanism is arranged at the lower end of the first display mechanism and located at the left end of the moving end of the support sliding mechanism, and is used for being locked with the collision component of the first latch mechanism when the left end of the moving end of the support sliding mechanism is at the left end of the fixed end; the lock component of the second latch mechanism is arranged at the lower end of the second display mechanism and located at the right end of the moving end of the support sliding mechanism, and is used for being locked with the collision component of the second latch mechanism when the right end of the moving end of the support sliding mechanism moves to the right end of the fixed end.

[0013] Further, the first display mechanism and the second display mechanism each include a display screen and a connecting frame matched with the display screen; the display screen is mounted on the connecting frame;

[0014] One end of the connecting frame of the first display mechanism and the second display mechanism is connected through the first interlocking mechanism, the moving end of the support sliding mechanism is arranged at the lower end of the connecting frame of the first display mechanism and the second display mechanism, the lock component of the first latch mechanism is connected to the lower end of the connecting frame of the first display mechanism and located at the left end of the moving end of the support sliding mechanism, and the lock component of the second latch mechanism is arranged at the lower end of the connecting frame of the second display mechanism and located at the right end of the moving end of the support sliding mechanism.

[0015] Further, the first display mechanism and the second display mechanism each include a camera module;

[0016] The camera module is mounted on the connecting frame at a side of the front of the display screen, and an output end of the camera module is used for connecting with a radio frequency signal transmission module in the host computer to transmit images.

[0017] Further, the display screen is a liquid crystal screen or a touch screen;

[0018] The connecting frame is made of carbon fiber material.

[0019] Further, the display screen is an EDP or LVDS interface integrated hard screen liquid crystal screen;

[0020] The second display mechanism further includes a wireless charging module and a radio frequency signal transmission module;

[0021] The wireless charging module and the radio frequency signal transmission module are respectively installed on the connecting frame of the second display mechanism, and are respectively used for connecting with the power supply end and the signal transmission end of the host computer, receiving the power transmitted by the host computer and performing bidirectional interaction of display and image signals; the wireless charging module and the radio frequency signal transmission module are respectively connected with the display screen of the first display mechanism, and are used for transmitting power to the display screen of the first display mechanism and performing bidirectional interaction of display and image signals.

[0022] Further, the connecting assembly comprises a first connecting plate and a connecting block; one end of the first connecting plate is respectively connected to the second interlocking mechanism or the first hinge, and the other end is connected with the connecting block;

[0023] The locking assembly comprises a second connecting plate and two elastic members; the second connecting plate is respectively connected to the first display mechanism or the second display mechanism, and one end of each of the two elastic members is connected with the second connecting plate and is symmetrically arranged about the length direction of the second connecting plate;

[0024] The inner sides of the two elastic members are respectively matched with two opposite side walls of the connecting block, forming a locking cavity matched with the connecting block; the other end of each of the two elastic members is provided with an opening, which is used for forming a locking structure with the two elastic members when the connecting block enters the locking cavity, or releasing the locking structure formed with the two elastic members when the connecting block moves out of the locking cavity.

[0025] Further, the elastic member comprises a plurality of elastic sub-members;

[0026] The plurality of elastic sub-members are arranged along the length direction of the second connecting plate, and a space is arranged between adjacent two elastic sub-members; the side wall corresponding to the inner side of the connecting block and the elastic sub-member is provided with a boss matched with the space between adjacent two elastic sub-members, which is used for cooperating with the space between adjacent two second connecting plates when the connecting block is connected to the locking cavity.

[0027] Further, the supporting sliding mechanism comprises a first guide member, a second guide member and a fixed block; the first guide member and the second guide member are both in sliding cooperation with the fixed block;

[0028] The first guide member and the second guide member are the moving ends of the supporting sliding mechanism, and are respectively arranged at the lower ends of the first display mechanism and the second display mechanism; the fixed block is the fixed end of the supporting sliding mechanism, and is respectively connected with the other end of the second interlocking mechanism and the other end of the first hinge.

[0029] Further, the first guide member and the second guide member are both guide grooves, the first guide member and the second guide member are in communication when the first display mechanism and the second display mechanism are in the unfolded state; and the length of the guide groove arranged at the lower end of the first display mechanism is greater than the length of the guide groove arranged at the lower end of the second display mechanism.

[0030] Further, the first display mechanism and the second display mechanism are provided with a second hinge at one end connected with the first interlocking mechanism, the second hinge is provided at intervals with the first interlocking mechanism, one end of the second hinge is connected with the first display mechanism, and the other end is connected with the second display mechanism.

[0031] The first hinge and the second hinge are both damping hinges.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] 1. The first interlocking mechanism and the second interlocking mechanism can realize the folding, unfolding and locking of the first display mechanism and the second display mechanism, and the opening, folding and locking of the first display mechanism and the second display mechanism relative to the host.

[0034] 2. The display screen is an EDP or LVDS interface integrated hard screen liquid crystal screen, so that an analog signal to digital signal circuit board is not required, the volume of the display screen is saved, the weight is reduced, and the overall device is more compact.

[0035] 3. The connecting frame is made of carbon fiber material, which meets the rigidity requirement and is lighter than the metal frame.

[0036] 4. The first guide and the second guide are both guide groove structures, so that no additional slide rail is required, the thickness is not increased, the structure is further simplified and compacted, and the weight of the overall device is reduced.

[0037] 5. The first interlocking mechanism and the second interlocking mechanism can be connected to the corresponding lock assembly through the collision assembly of the first interlocking mechanism and the second interlocking mechanism when the first display mechanism and the second display mechanism are slid to the preset position, so as to realize the position locking of the first display mechanism, the second display mechanism and the host. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1is the structural schematic view of the main view direction of the embodiment of the present application;

[0039] Figure 2 is the left view of Figure 1 ;

[0040] Figure 3 is the structural schematic view of the support sliding mechanism, the first display mechanism and the second display mechanism in the embodiment of the present application; (the fixed block is not shown in the figure)

[0041] Figure 4 is the structural schematic view of the first interlocking mechanism in the embodiment of the present application;

[0042] Figure 5 is the structural schematic view of the main view direction of the second interlocking mechanism and the first latch mechanism in the embodiment of the present application;

[0043] Figure 6 is the main view of the lock assembly in the embodiment of the present application;

[0044] Figure 7 is the top view of Figure 6 ;

[0045] Figure 8 is the structural schematic view of the second interlocking mechanism and the latch assembly in the embodiment of the present application;

[0046] Figure 9 is the top view of Figure 5 ;

[0047] Figure 10 is the operation flowchart of the present application.

[0048] In the figure: 1-first display mechanism, 2-second display mechanism, 21-wireless charging module, 22-rf signal transmission module, 3-first interlocking mechanism, 4-second interlocking mechanism, 5-first latch mechanism, 6-second latch mechanism, 7-first hinge, 8-support sliding mechanism, 81-first guide, 82-second guide; 9-connection frame, 10-display screen, 11-camera module, 12-latch assembly, 121-first connecting plate, 122-connection block, 13-lock assembly, 131-second connecting plate, 132-elastic subcomponent, 14-second hinge. DETAILED DESCRIPTION

[0049] In order to make the purposes, advantages and features of the present application clearer, a foldable push-pull type double-screen display device with locking is further described in detail below in combination with the drawings and specific embodiments. The advantages and features of the present application will be clearer according to the following specific embodiments. It should be noted that the drawings are very simplified and use non-precise proportions, only for the purpose of conveniently and clearly assisting the description of the embodiments of the present application; secondly, the structures shown in the drawings are often part of the actual structures.

[0050] In the description of the present application, it should be noted that the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] The foldable push-pull type double-screen display device of the present embodiment, as shown in Figures 1-9 , comprises a first display mechanism 1, a second display mechanism 2, a first interlocking mechanism 3, a second interlocking mechanism 4, a first latch mechanism 5, a second latch mechanism 6, a first hinge 7, a second hinge 14 and a supporting sliding mechanism 8.

[0052] As shown in Figure 1 , Figure 2 , and Figure 3 , the first display mechanism 1 and the second display mechanism 2 each comprise a display screen 10 and a connecting frame 9 matched with the display screen 10; the display screen 10 is installed on the connecting frame 9; wherein the display screen 10 is a liquid crystal screen in the present embodiment, preferably an EDP or LVDS interface integrated hard screen liquid crystal screen, directly using high-definition digital signals, improving the content amount and delicacy of the display; at the same time, also reducing the thickness and weight of the liquid crystal screen assembly, making the entire device lightweight; in other embodiments of the present application, the display screen 10 can also be a touch screen; if the display screen 10 adopts an EDP or LVDS interface integrated hard screen liquid crystal screen, the second display mechanism 2 also needs to be provided with a wireless charging module 21 and a radio frequency signal transmission module 22; the wireless charging module 21 and the radio frequency signal transmission module 22 are respectively installed on the connecting frame 9 of the second display mechanism 2, the wireless charging module 21 and the radio frequency signal transmission module 22 are respectively used for connecting with the power supply end and the signal transmission end of the host, receiving the power delivered by the host and performing bidirectional interaction of display and image signals; the wireless charging module 21 and the radio frequency signal transmission module 22 are respectively connected with the display screen 10 of the first display mechanism 1 through a wire harness, for delivering power to the display screen 10 of the first display mechanism 1 and performing bidirectional interaction of display and image signals; in the present embodiment, the connecting frame 9 adopts carbon fiber material, saving the use and weight of metal structural parts, meeting the requirements of lightweight and high strength of the device, and at the same time realizing rapid assembly.

[0053] Further, in a preferred embodiment of the present application, a mounting groove is reserved on the side of the display screen 10 where the first display mechanism 1 and the second display mechanism 2 connecting frame 9 is located, and when needed, the mounting groove can be used to install the camera module 11, the output end of which is connected with the radio frequency signal transmission module in the host computer, so as to realize image transmission with the host computer.

[0054] Further, in a preferred embodiment of the present application, buckles are pre-set on the connecting frame 9, and the display screen 10, the radio frequency signal transmission module 22, the wireless charging module 21 and other components can be connected to the connecting frame 9 through the buckles, so that additional threaded holes and the like are not needed, and installation and disassembly are facilitated.

[0055] In the present embodiment, the first interlocking mechanism 3 and the second interlocking mechanism 4 are of the same structure, and the structure and the structure drawing thereof can be referred to the patent application with the publication number CN217821428U, “A Rotary Locking Device and a Computer”, as shown in the following figure: Figure 4 The device comprises a first connecting piece and a second connecting piece, and a rotating assembly; the first connecting piece is internally provided with a first cavity; a first bevel gear hole is provided on the side wall of the first cavity close to the second connecting piece; the small end of the first bevel gear hole is close to the second connecting piece; the second connecting piece is internally provided with a second cavity; a second bevel gear hole matching the first bevel gear hole is provided on the side wall of the second cavity close to the first cavity; the rotating assembly comprises a rotating shaft, a spring and a baffle in the second cavity, and a bevel gear; one end of the rotating shaft is connected with the small end of the bevel gear, and the other end thereof extends out of the second cavity for pressing; the baffle is fixedly sleeved on the rotating shaft; the spring is sleeved on the rotating shaft, one end thereof abuts against the inner wall of the second cavity, and the other end thereof abuts against the baffle; when the spring is compressed, the bevel gear partially or wholly extends into the first cavity; when the spring is released, the bevel gear is engaged with the first bevel gear hole and the second bevel gear hole at the same time; the depth of the first cavity along the rotating shaft line direction is greater than or equal to the depth of the second bevel gear hole along the rotating shaft axis direction. The difference between the present embodiment and the prior art lies in that the straight teeth on the bevel gear are changed into inclined teeth, so that the precision is higher, and at the same time, a high-strength self-lubricating material is adopted, which reduces the size of the device and brings a comfortable experience; the front spring is changed into a rear spring, which reduces the size of the device. It should be noted that the specific structure of the first interlocking mechanism 3 and the second interlocking mechanism 4 described above is only a preferred embodiment of the present application, and in other embodiments of the present application, a person skilled in the art can also select other structures to realize the same function as the first interlocking mechanism 3 and the second interlocking mechanism 4 of the present application.

[0056] The first display mechanism 1 and the second display mechanism 2 are connected to one end of the connecting frame 9 through the first interlocking mechanism 3, so that the first display mechanism 1 and the second display mechanism 2 can realize folding, unfolding and locking actions; and the second hinge 14 is further arranged at the end of the first display mechanism 1 and the second display mechanism 2 connected with the first interlocking mechanism 3, the second hinge 14 is arranged in a spaced manner with the first interlocking mechanism 3, one end of the second hinge 14 is connected with the connecting frame 9 of the first display mechanism 1, and the other end is connected with the connecting frame 9 of the second display mechanism 2, which can provide fixing and supporting effects for folding, unfolding and locking of the first display mechanism 1 and the second display mechanism 2, and ensure stability during use; in a preferred embodiment of the present application, the second hinge 14 is a damping hinge with wire harness perforation, which can facilitate the wire harness to pass through.

[0057] The first and second latch mechanisms 5 and 6 are the same in structure, and each includes a latch assembly 12 and a lock assembly 13, and the latch assembly 12 and the lock assembly 13 cooperatively form a separable locking structure; as shown in Figure 5 and Figure 8 The latch assembly 12 includes a first connecting plate 121 and a connecting block 122; the first connecting plate 121 is provided with a threaded hole, and one end of the first connecting plate 121 is connected to the second interlocking mechanism 4 or the first hinge 7 through a bolt, and the other end is connected with the connecting block 122; as shown in Figure 7 The lock assembly 13 includes a second connecting plate 131 and two elastic members; the elastic members are made of steel and have a certain elasticity; the second connecting plate 131 is connected to the connecting frame 9 of the first display mechanism 1 or the second display mechanism 2; one end of each of the two elastic members is connected with the second connecting plate 131, and the two elastic members are symmetrically arranged about the length direction of the second connecting plate 131; the inner sides of the two elastic members are respectively adapted to two opposite side walls of the connecting block 122, forming a locking cavity cooperated with the connecting block 122; the other end of each of the two elastic members is provided with an opening, which is used to form a locking structure with the two elastic members when the connecting block 122 enters the locking cavity, facilitating the locking of the first display mechanism 1 and the second display mechanism 2, and the first display mechanism 1, the second display mechanism 2 and the main machine; or when the connecting block 122 moves out of the locking cavity, the locking structure formed by the two elastic members is released, facilitating the folding and opening of the first display mechanism 1 and the second display mechanism 2, and the first display mechanism 1, the second display mechanism 2 and the main machine. Specifically, in the embodiment, the connecting block 122 is arranged in a structure that one end is a pointed end and the other end is an oval end, which can facilitate the pointed end to enter the locking cavity between the two elastic members through the opening, and at the same time, the oval end interacts with the elastic members, so that a certain external force needs to be applied to move the connecting block 122 out of the locking cavity, thereby improving the stability during connection.

[0058] In a preferred embodiment of the present invention, in order to further improve the connection stability of the contact component 12 and the locking component 13, the elastic element is designed to include a plurality of elastic sub-components 132; such as Figure 6 As shown, multiple elastic sub-components 132 are arranged along the length direction of the second connecting plate 131, and there is a gap between two adjacent elastic sub-components 132; the connecting block 122 and the side wall corresponding to the inner side of the elastic sub-components 132 are provided with bosses that are adapted to the gap between two adjacent elastic sub-components 132, which are used to cooperate with the gap between two adjacent second connecting plates when the connecting block is connected to the locking cavity. Through the cooperation of the bosses with the elastic sub-components 132 on its upper and lower sides, the connection effect is further made more stable.

[0059] like Figure 5 As shown, one end of the second interlocking mechanism 4 is used to connect to the host, and the other end is connected to the first connecting plate 121 in the first latching mechanism 5 latching assembly 12. The second interlocking mechanism 4 is used for folding, opening and locking the first display mechanism 1 and the second display mechanism 2 relative to the host. One end of the first hinge 7 is connected to the host, and the other end is connected to the first connecting plate 121 in the second latching mechanism 6 latching assembly 12.

[0060] The movable end of the supporting sliding mechanism 8 is located on the lower side of the connecting frame 9 of the first display mechanism 1 and the second display mechanism 2, and the fixed end is connected to the other end of the second interlocking mechanism 4 and the other end of the first hinge 7, respectively. Specifically, the supporting sliding mechanism 8 includes a first guide 81, a second guide 82, and a fixed block. The first guide 81 and the second guide 82 are both slidably engaged with the fixed block. The first guide 81 and the second guide 82 are connected when the first display mechanism 1 and the second display mechanism 2 are in the unfolded state. The first guide 81 and the second guide 82 are the movable ends of the supporting sliding mechanism 8, respectively located at the lower ends of the first display mechanism 1 and the second display mechanism 2. The fixed block is the fixed end of the supporting sliding mechanism 8, respectively connected to the other end of the second interlocking mechanism 4 and the other end of the first hinge 7. In a preferred embodiment of the present invention, in order to avoid increasing the size of the device due to the setting of guide rails, the first guide member 81 and the second guide member 82 are both set as guide grooves; and the length of the guide groove set at the lower end of the first display mechanism 1 is greater than the length of the guide groove set at the lower end of the second display mechanism 2; and in order to improve the support effect of the supporting sliding mechanism 8 on the first display mechanism 1 and the second display mechanism 2, the fixing block is set as a candied hawthorn-shaped block, thereby improving the support effect and supporting the entire device.

[0061] The end of the first display mechanism 1 furthest from the first interlocking mechanism 3 is defined as the left end, and the end of the second display mechanism 2 furthest from the first interlocking mechanism 3 is defined as the right end. The locking component 13 of the first latching mechanism 5 is located at the lower end of the connecting frame 9 of the first display mechanism 1 and at the left end of the first guide member 81, and is used to lock with the latching component 12 of the first latching mechanism 5 when the left end of the fixed block is at the left end of the first guide member 81. The locking component 13 of the second latching mechanism 6 is located at the lower end of the connecting frame 9 of the second display mechanism 2 and at the right end of the second guide member 82, and is used to lock with the latching component 12 of the second latching mechanism 6 when the right end of the second guide member 82 moves to the right end of the fixed block.

[0062] In a preferred embodiment of the present invention, protective corner protectors are provided at the four corners of the connecting frame 9, and the corner protectors can be made of elastic materials such as rubber or silicone.

[0063] like Figure 10 As shown, in use, first press the second interlock mechanism 4 to flip the first display mechanism 1 and the second display mechanism 2 relative to the host, so that both the first display mechanism 1 and the second display mechanism 2 are in a vertical state. Release the second interlock mechanism 4 to lock the relative positions of the first display mechanism 1, the second display mechanism 2 and the host. Next, press the first interlock mechanism 3 to unfold the first display mechanism 1 and the second display mechanism 2, so that the first display mechanism 1 and the second display mechanism 2 are in the same plane. Release the first interlock mechanism 3 to lock the relative positions of the first display mechanism 1 and the second display mechanism 2. Finally, push the first display mechanism 1 and the second display mechanism 2 so that the second display mechanism 2 moves closer to the center position of the host. During this process, the contact component 12 and the lock component 13 of the first contact locking mechanism 5 first separate. When the second display mechanism 2 reaches the center position of the host, the contact component 12 and the lock component 13 of the second contact locking mechanism 6 connect to form a locking structure, locking the positions of the first display mechanism 1 and the second display mechanism 2. The host can then send the content to be displayed to the first display mechanism 1 and the second display mechanism 2.

[0064] When retracting, push the first display mechanism 1 and the second display mechanism 2 in the reverse direction. During this process, the contact component 12 and the lock component 13 of the second contact locking mechanism 6 first separate. After returning to the initial position, the contact component 12 and the lock component 13 of the first contact locking mechanism 5 reconnect to form a locking structure. Press the first interlocking mechanism 3 to fold the first display mechanism 1 and the second display mechanism 2 in half. Release the first interlocking mechanism 3 so that the first display mechanism 1 and the second display mechanism 2 remain in the folded state. Press the second interlocking mechanism 4 to fold the folded first display mechanism 1 and the second display mechanism 2 relative to the host. Release the second interlocking mechanism 4 to lock the position of the first display mechanism 1 and the second display mechanism 2 relative to the host.

Claims

1. A foldable push-pull type double screen display device with locking, comprising a first display mechanism (1), a second display mechanism (2), a first interlocking mechanism (3), a second interlocking mechanism (4), a first latch mechanism (5), a second latch mechanism (6), a first hinge (7) and a supporting sliding mechanism (8); one end of the first display mechanism (1) and the second display mechanism (2) is connected through the first interlocking mechanism (3), and the first interlocking mechanism (3) is used for folding, unfolding and locking of the first display mechanism (1) and the second display mechanism (2); the first latch mechanism (5) and the second latch mechanism (6) are the same in structure, and each comprises a latch component (12) and a lock component (13), the latch component (12) and the lock component (13) cooperate to form a separable locking structure; one end of the second interlocking mechanism (4) is used for connecting with a host computer, and the other end is connected with the latch component (12) of the first latch mechanism (5), and the second interlocking mechanism (4) is used for folding, unfolding and locking of the first display mechanism (1) and the second display mechanism (2) relative to the host computer; one end of the first hinge (7) is connected with the host computer, and the other end is connected with the latch component (12) of the second latch mechanism (6); the moving end of the supporting sliding mechanism (8) is arranged at the lower end of the first display mechanism (1) and the second display mechanism (2), and the fixed end is connected with the other end of the second interlocking mechanism (4) and the other end of the first hinge (7) respectively; the end of the first display mechanism (1) far away from the first interlocking mechanism (3) is defined as a left end, and the end of the second display mechanism (2) far away from the first interlocking mechanism (3) is defined as a right end; the lock component (13) of the first latch mechanism (5) is arranged at the lower end of the first display mechanism (1) and located at the left end of the moving end of the supporting sliding mechanism (8), and is used for locking with the latch component (12) of the first latch mechanism (5) when the left end of the moving end of the supporting sliding mechanism (8) is at the left end of the fixed end; the lock component (13) of the second latch mechanism (6) is arranged at the lower end of the second display mechanism (2) and located at the right end of the moving end of the supporting sliding mechanism (8), and is used for locking with the latch component (12) of the second latch mechanism (6) when the right end of the moving end of the supporting sliding mechanism (8) moves to the right end of the fixed end; the latch component (12) comprises a first connecting plate (121) and a connecting block (122); one end of the first connecting plate (121) is connected to the second interlocking mechanism (4) or the first hinge (7) respectively, and the other end is connected with the connecting block (122); the lock component (13) comprises a second connecting plate (131) and two elastic members; the second connecting plate (131) is connected to the first display mechanism (1) or the second display mechanism (2) respectively, one end of the two elastic members is connected with the second connecting plate (131), and the two elastic members are symmetrically arranged about the length direction of the second connecting plate (131). ​ ​ ​ ​ ​ ​ ​ ​ The inner sides of the two elastic members are respectively matched with two opposite side walls of the connecting block (122), forming a locking cavity matched with the connecting block (122); the other ends of the two elastic members are provided with openings for the connecting block (122) to enter or exit the locking cavity. 2.The foldable and lockable double-screen display device according to claim 1, wherein: The first display mechanism (1) and the second display mechanism (2) each comprise a display screen (10) and a connecting frame (9) matched with the display screen (10); the display screen (10) is mounted on the connecting frame (9); One end of the connecting frame (9) in the first display mechanism (1) and the second display mechanism (2) is connected through the first interlocking mechanism (3); the moving end of the supporting sliding mechanism (8) is arranged at the lower end of the connecting frame (9) in the first display mechanism (1) and the second display mechanism (2); the lock assembly (13) in the first latch mechanism (5) is connected to the lower end of the connecting frame (9) in the first display mechanism (1) and is located at the left end of the moving end of the supporting sliding mechanism (8); the lock assembly (13) in the second latch mechanism (6) is arranged at the lower end of the connecting frame (9) in the second display mechanism (2) and is located at the right end of the moving end of the supporting sliding mechanism (8). 3.The foldable and lockable double-screen display device according to claim 2, wherein: The first display mechanism (1) and the second display mechanism (2) each comprise a camera module (11); The camera module (11) is mounted on the connecting frame (9) at the side of the display screen (10) facing the front; the output end of the camera module (11) is used to connect with a radio frequency signal transmission module in a host computer to transmit images. 4.The foldable and lockable double-screen display device according to claim 3, wherein: The display screen (10) is a liquid crystal screen or a touch screen; The connecting frame (9) is made of carbon fiber material. 5.The foldable and lockable double-screen display device according to claim 4, wherein: The display screen (10) is an EDP or LVDS interface integrated hard screen liquid crystal screen; The second display mechanism (2) further comprises a wireless charging module (21) and a radio frequency signal transmission module (22); The wireless charging module (21) and the radio frequency signal transmission module (22) are respectively mounted on the connecting frame (9) of the second display mechanism (2); the wireless charging module (21) and the radio frequency signal transmission module (22) are respectively used to connect with a power supply end and a signal transmission end of a host computer, receive power transmitted by the host computer, and perform bidirectional interaction of display and image signals; the wireless charging module (21) and the radio frequency signal transmission module (22) are respectively connected with the display screen (10) of the first display mechanism (1), and are used to transmit power to the display screen (10) of the first display mechanism (1) and perform bidirectional interaction of display and image signals. 6.The foldable and lockable double-screen display device according to any one of claims 1-5, wherein: The elastic member comprises a plurality of elastic sub-members (132). A plurality of the elastic sub-components (132) are arranged along the length direction of the second connecting plate (131), and a space is arranged between two adjacent elastic sub-components (132); the connecting block (122) is provided with a boss on the inner side wall corresponding to the elastic sub-component (132), which is matched with the space between two adjacent elastic sub-components (132) to match the space between two adjacent second connecting plates (131) when the connecting block (122) is connected into the locking cavity.

7. The foldable push-pull type double-screen display device with a lock according to claim 6, characterized in that: The support sliding mechanism (8) comprises a first guide (81), a second guide (82) and a fixed block; the first guide (81) and the second guide (82) are in sliding cooperation with the fixed block; The first guide (81) and the second guide (82) are the moving ends of the support sliding mechanism (8) and are arranged at the lower ends of the first display mechanism (1) and the second display mechanism (2) respectively; the fixed block is the fixed end of the support sliding mechanism (8) and is connected with the other end of the second interlocking mechanism (4) and the other end of the first hinge (7) respectively.

8. The foldable push-pull type double-screen display device with a lock according to claim 7, characterized in that: The first guide (81) and the second guide (82) are both guide grooves, the first guide (81) and the second guide (82) are in communication when the first display mechanism (1) and the second display mechanism (2) are in the unfolded state; and the length of the guide groove arranged at the lower end of the first display mechanism (1) is greater than the length of the guide groove arranged at the lower end of the second display mechanism (2).

9. The foldable push-pull type double-screen display device with a lock according to claim 8, characterized in that: The first display mechanism (1) and the second display mechanism (2) are provided with a second hinge (14) at the end connected with the first interlocking mechanism (3); the second hinge (14) is arranged in space with the first interlocking mechanism (3); one end of the second hinge (14) is connected with the first display mechanism (1) and the other end is connected with the second display mechanism (2); The first hinge (7) and the second hinge (14) are both damping hinges.

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