A tablet detachable expansion control device

Abstract

The application is suitable for the technical field of mobile terminal. The application discloses a detachable and expandable control device for a tablet computer, which comprises a bearing main body connected with the tablet computer in an electrical signal mode, and detachable control mechanisms arranged on opposite sides of the bearing main body. Each control mechanism is respectively provided with a control circuit connected with the tablet computer in an electrical signal mode through the bearing main body and a control button or handle for operating the tablet computer through the control circuit. A detachable connecting mechanism is arranged between each control mechanism and the bearing main body. When used as a drawing board, the tablet computer is fixed on the bearing main body, the bearing main body is mechanically matched with the tablet computer and is in electrical signal communication, and the two control mechanisms are connected with the bearing main body through the detachable connecting mechanism to form an electrical loop and an integral structure, and the content displayed or operated by the tablet computer is controlled through the two control mechanisms. When not in use, the control mechanisms can be separated from the bearing main body, the volume is effectively reduced, and different use scenarios can be expanded.

Description

Technical Field

[0001] This invention relates to the field of mobile terminal technology, and in particular to a detachable and expandable control device for a tablet computer. Background Technology

[0002] Existing mobile terminals, such as tablets, are becoming increasingly powerful, not only for viewing or reading information, but also for use as drawing boards or gaming terminals. However, the trend of tablets is to make the display area larger and larger, resulting in insufficient space or position for users to hold the tablet with their hands without affecting the use of the display area. As a result, tablets are not conveniently used in the above scenarios, affecting the user experience. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a detachable expansion control device for a tablet computer. This detachable expansion control device can maximize the use of the display area, adapt to different usage scenarios, and at the same time take into account the stability of the detachable expansion connection and the convenience of disassembly.

[0004] To address the aforementioned technical problems, this invention provides a detachable expansion control device for a tablet computer. This device includes a support body fixed to and electrically connected to the tablet computer. Detachable control mechanisms are provided on opposite sides of the support body. Each control mechanism has a control circuit connected to the tablet computer via the support body and a control button or handle for operating the tablet computer via the control circuit. A detachable connection mechanism and an electrical connection mechanism are provided between each control mechanism and the support body. When the detachable connection mechanism is separated, the control mechanism is disconnected from the tablet computer. The detachable connection mechanism includes a groove on the support body and a slide rail structure on the control mechanism. The groove has a locking component that locks the positions of the support body and the control mechanism when the groove and the slide rail structure are properly engaged. This locking component can change the angle between the locking and unlocking directions.

[0005] Furthermore, the electrical signal connection mechanism includes a first signal connector located at the end of the sliding direction of the slide and a second signal connector located at the control mechanism, wherein the first signal connector and the second signal connector are matched to each other.

[0006] Furthermore, the locking assembly includes a rotatable and retractable latch component located on the support body and an elastic component that keeps the latch component in an extended state, as well as a fixing groove located on the control mechanism that cooperates with the latch component for locking. The latch component includes a latch and a locking pin connected to the latch and fitted with the elastic component. The locking pin has a strip-shaped hole that cooperates with a rotating shaft on the support body. The latch extends at least partially out of the surface of the support body, and a limiting part is provided between the latch and the support body to restrict the free extension and retraction of the latch.

[0007] Furthermore, the locking assembly includes a rotatable and retractable latch component located on the supporting body and an elastic component that keeps the latch component in an extended state, as well as a fixing groove located on the control mechanism that cooperates with the latch component to lock. The latch component includes a latch body and a locking pin connected to the latch body and fitted with the elastic component. The latch body is provided with a latch and a push rod mechanism that allows the latch to rotate in the installation or disassembly direction. The latch extends at least partially out of the surface of the supporting body, and a limiting part is provided between the latch body and the supporting body to restrict the free extension and retraction of the latch body.

[0008] Furthermore, the push rod mechanism includes a push rod horizontally disposed on the bolt body and two push blocks disposed on the push rod, as well as a mating groove disposed on the bolt that engages with the two push blocks. The mating groove causes the bolt to rotate in the direction of the push blocks' movement under the engagement of the two horizontally moving push blocks.

[0009] Furthermore, the two ends of the mating groove are respectively provided with rotating inclined surfaces that cooperate with the push block, and the rotation direction of the locking tongue is at least consistent with the disassembly direction.

[0010] Furthermore, the length direction of the strip hole is consistent with the length direction of the locking pin.

[0011] Furthermore, the locking tongue has a first inclined surface in the installation direction between the control mechanism and the supporting body, and a second inclined surface in the disassembly direction.

[0012] Furthermore, the angle formed by the first inclined plane and the installation or disassembly direction is greater than the angle formed by the second inclined plane and the installation or disassembly direction.

[0013] Furthermore, the angle between the second inclined plane and the installation or disassembly direction increases during disassembly.

[0014] Furthermore, the angle between the first inclined surface and the installation or disassembly direction may increase or remain unchanged during installation.

[0015] Furthermore, when the fixing groove is in the locked position, the side of the first inclined surface near the locking tongue is set as a mating inclined surface.

[0016] Furthermore, the second inclined surface of the fixing groove near the locking tongue is set as a limiting inclined surface, and when it is in the locked position, there is a gap between the first inclined surface and the mating inclined surface.

[0017] Furthermore, the mating inclined surface of the fixing groove is provided with a second magnet that engages with the first magnet set on the first inclined surface.

[0018] Furthermore, the slide is provided with an elastic layer between its end in the installation direction and the first control mechanism or the second control mechanism.

[0019] Furthermore, the elastic layer includes rubber and silicone. This invention discloses a detachable and expandable control device for a tablet computer, comprising a support body fixed to and electrically connected to the tablet computer. Detachable control mechanisms are located on opposite sides of the support body. Each control mechanism includes a control circuit connected to the tablet computer via the support body and control buttons or a handle for operating the tablet computer via the control circuit. A detachable connection mechanism and an electrical connection mechanism are provided between each control mechanism and the support body. When the detachable connection mechanism is separated, the control mechanism is disconnected from the tablet computer. The detachable connection mechanism includes a groove on the support body and a slide rail structure on the control mechanism. The groove has a locking component that locks the positions of the support body and control mechanisms when the groove and slide rail structure are properly engaged. This locking component can change the angle between the locking and unlocking directions. When used as a drawing board, the tablet computer is fixed to the support body, which forms both a mechanical connection and an electrical connection with the tablet computer. The two control mechanisms are connected to the support body via the detachable connection mechanism, forming an electrical circuit and structurally integrated. The two control mechanisms control the content displayed or operated on the tablet computer. When not in use, the main support and the two control mechanisms can be separated from the main support, effectively reducing the size and adapting to different usage scenarios. The change in the angle between the locking component and the unlocking direction reduces the difficulty of unlocking while also protecting locking stability.

[0020] The locking assembly includes a rotatable and retractable latch component located within a fixed cavity of the supporting body, an elastic component that keeps the latch component in an extended state, and a fixing groove located in the control mechanism for locking in cooperation with the latch component. The latch component includes a latch body and a locking pin connected to the latch body and fitted with the elastic component. The latch body has a latch and a push rod mechanism that allows the latch to rotate in the installation or disassembly direction. At least a portion of the latch extends from a fixing hole in the fixed cavity out of the surface of the supporting body. A limiting part is provided between the latch body and the fixing hole to restrict the free extension and retraction of the latch body. By rotating the latch at least in the disassembly direction through the push rod mechanism, the angle between the latch and the disassembly direction is increased, making the latch easier to compress, reducing the resistance of the latch to the separation of the control mechanism and the supporting body, and ensuring connection stability after installation.

[0021] The locking assembly includes a rotatable and retractable latch component located within a fixed cavity of the supporting body, an elastic component that keeps the latch component in an extended state, and a fixing groove located in the control mechanism for locking in conjunction with the latch component. The latch component includes a latch and a locking pin connected to the latch and fitted with the elastic component. The locking pin engages with a rotating shaft connected to the supporting body through a slotted hole. Part of the latch is clearance-fitted with the fixing hole, and at least a portion of the latch extends from the fixing hole in the fixed cavity out of the surface of the supporting body. A limiting part restricts the free extension and retraction of the latch between the latch and the fixing hole. When the control mechanism is separated from the supporting body, the latch component can rotate in the disassembly direction, making it easier to compress and move in the main direction, reducing disassembly resistance, and ensuring connection stability after installation.

[0022] The slide has an elastic layer between its end in the installation direction and the control mechanism, which can improve the waterproofness between the second signal connector and the first signal connector, and at the same time increase the space for the control mechanism to move when it is necessary to press it in the installation direction before disassembly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an embodiment of a detachable and expandable control device for a tablet computer.

[0025] Figure 2 This is a three-dimensional structural diagram of an embodiment of a detachable and expandable control device for a tablet computer.

[0026] Figure 3 This is a schematic diagram of an embodiment of a detachable connection mechanism on the main body.

[0027] Figure 4 A schematic diagram of the embodiment after removing the detachable connecting mechanism slide rail.

[0028] Figure 5 This is a schematic diagram of an embodiment of the control mechanism.

[0029] Figure 6 This is a partial cross-sectional structural diagram showing the control mechanism and the supporting body working together.

[0030] Figure 7 for Figure 6 Enlarged schematic diagram of part A in the middle.

[0031] Figure 8 This is a cross-sectional structural schematic diagram of another embodiment of the locking component.

[0032] Figure 9 for Figure 8 A magnified schematic diagram of part B in the middle section.

[0033] Figure 10 for Figure 8 A schematic diagram of the locking assembly during the disassembly process.

[0034] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0036] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are only for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0037] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0039] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0040] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0042] like Figures 1-7 As shown, the present invention provides an embodiment of a detachable and expandable control device for a tablet computer.

[0043] The detachable expansion control device for the tablet computer includes a support body 1 that fixes the tablet computer A. The support body 1 has detachable control mechanisms 2 on opposite sides, namely a first control mechanism and a second control mechanism. The first and second control mechanisms each have a control circuit (not shown in the attached diagram) connected to the tablet computer A via a signal, and control buttons or a handle 22 for operating the tablet computer A through the control circuit. Each control mechanism 2 has a detachable connection mechanism with the support body 1. The detachable connection mechanism includes a groove on the support body and a slide rail structure on the control mechanism. The groove has a locking component that locks the positions of the support body and the control mechanism when the groove and the slide rail structure are properly engaged. This locking component can change the angle between the locking and unlocking directions.

[0044] Specifically, the control mechanism 2 includes a control body 21 and control buttons or handles 22 on the control body 21. The detachable connection mechanism includes a slide groove 44 on the support body 1 and slide rail structures 3 on the two control mechanisms 2 respectively. At the tail end of the slide groove 44 in the installation direction, i.e., at the end of the slide groove 44, a first electrical signal connector 40 that mates with the slide rail structure 3 is provided. The slide rail structure 3 is provided with a second signal connector 32 that matches the first electrical signal connector 40. The second signal connector 32 and the first electrical signal connector 40 respectively adopt a TYPE-C interface or other standard signal interface. The slide groove 44 and the slide rail structure 3 are provided with a locking component 4. When the slide groove 44 and the slide rail structure 3 are in place, the locking component 4 may lock the position of the control mechanism 2. That is, when the second signal connector 32 and the first electrical signal connector 40 form a stable electrical signal connection, the control mechanism 2 and the support body 1 are in a locked and stable fixed state. The second signal connector 32 and the first electrical signal connector 40 can be male and female connectors.

[0045] The locking assembly 4 includes a retractable latch component 41 and an elastic component 46 that keeps the latch component 41 in an extended state, as well as a fixing groove 31 that cooperates with the latch component 41. The fixing groove 31 is disposed on the control body 21 of the control mechanism 2 and is used to cooperate with the latch component 41 after installation to prevent the control mechanism 2 from disengaging from the support body 1. The latch component 41 is installed in the support body 1, such as in the fixing cavity 11 provided on the support body 1. The latch component 41 includes a latch 411 and a locking pin 412 connected to the latch 411. The elastic component 46 includes an elastic functional component such as a spring. When a spring is used, the spring is sleeved on the locking pin 412 to keep the latch component 41 partially extended from the support body 1. The latch 411 has a first inclined surface 4111 in the installation direction and a second inclined surface 4112 in the disassembly direction. The angle α formed by the first inclined surface 4111 and the installation or disassembly direction is greater than the angle b formed by the second inclined surface 4112 and the installation or disassembly direction. The installation or disassembly direction usually refers to the horizontal plane of installation or disassembly, or the straight mating surface between the supporting body 1 and the control mechanism 2. During installation, because the first inclined surface 4112 is gentler, it is easier to compress the latch 411. When installed in place, the second signal connector 32 and the first electrical signal connector 40 can form a good electrical conduction state. That is, when the latch 411 is located in the fixing groove 31, under the action of the elastic component 46, the latch 411 extends out of the surface of the supporting body 1 and is located in the fixing groove 31. At the same time, the angle between the second inclined surface 4112 and the installation or disassembly direction is small. The cooperation between the second inclined surface 4112 and the fixing groove 31 makes it difficult for the latch 411 to move in the retraction direction. After the control mechanism 2 is fixed, it is not easy to loosen, thus improving the reliability of the connection.

[0046] In this embodiment, the elastic component 46 can be a spring, or other components that allow the latch 411 to extend outward, such as a spring sheet. The latch 411 can extend and retract within a certain range within the supporting body 1. Specifically, the supporting body 1 has a fixing cavity 11 with a fixing hole 12. A limiting structure 4110 is provided between the supporting body 1 and the latch 411, meaning a limiting structure 4110 is provided between the fixing hole 12 on the supporting body 1 and the latch 411. This limiting structure 4110 restricts the extension range of the latch 411 and can typically be a step or similar structure. Generally, there is a certain gap between the latch 411 and the fixing hole 12 to ensure the latch 411 can extend and retract, while also allowing for movement in the installation or disassembly direction.

[0047] The fixing groove 31 has a shape roughly the same as the projection of the latch 411 perpendicular to the installation direction, and its interior can accommodate the latch 411 in the locked state. The fixing groove 31 has a limiting inclined surface and a mating inclined surface (not shown in the attached drawings) in the installation and disassembly directions, respectively. When the fixing groove 31 mates with the latch 411, the side of the fixing groove 31 closest to the second inclined surface 4112 of the latch 411 is the limiting inclined surface, and the side closest to the first inclined surface 4111 of the latch 411 is the mating inclined surface. In the locked state, the second inclined surface 4112 of the latch 411 is in contact with the limiting inclined surface of the fixing groove 31. The first inclined surface 4111 and the mating inclined surface are separated, i.e., there is a separation gap between the first inclined surface 4111 and the mating inclined surface.

[0048] Because the second inclined surface 4112 with a smaller angle has a larger resistance after being fixed with the fixing groove 31, the stability of the connection after installation is guaranteed. However, since the control mechanism 2 needs to be separated from the main body 1 in some use cases, this increases the difficulty of disassembly. That is, it is more difficult to separate the main body 1 from the control mechanism 2.

[0049] The locking pin 412 is provided with a strip hole 4121, which is engaged with the rotating shaft 413 connected to the bearing body 1. The length direction of the strip hole 4121 is consistent with the length direction of the locking pin 412, and the locking pin 412 can rotate and extend within a certain angle along the strip hole 4121. The fixed groove 31 has a first magnet 45 on its mating inclined surface. That is, the side wall of the fixed groove 31 near the first inclined surface 4111 has a second magnet 45 that attracts the first magnet (not shown in the figure) on the first inclined surface 4111. During disassembly, the control mechanism 2 is pressed in the installation direction. Since the control mechanism 2 and the supporting body 1 have an elastic layer in the installation direction, and there is a movable gap between the latch 411 and the fixed hole 12, space is provided for the control mechanism 2 to move in the installation direction. When the second magnet 45 attracts the first magnet and then moves in the disassembly direction, it can generate two forces on the latch 411. The second magnet 45 causes the latch 411 to rotate around the pivot 413. After rotation, the angle between the second inclined surface 4112 and the disassembly direction increases, making it easier for the latch 411 to retract inward, reducing the resistance during disassembly, and thus making disassembly more convenient. Furthermore, when the second inclined surface 4112 is at the same angle as the side wall of the fixing groove, that is, when the two surfaces form a large surface contact after fixing, the locking tongue 411 deflects within a certain range during disassembly, which can reduce the contact surface between the second inclined surface 4112 and the side wall of the fixing groove, and also reduce the contact area between the two, thereby reducing the force between the two and facilitating disassembly.

[0050] An elastic layer (not shown in the attached figure) is provided between the end of the slide 44 in the installation direction and the control mechanism 2. This layer provides a certain amount of movement space for disassembly by moving the slide in the installation direction first, and also provides a seal between the two. The elastic layer includes rubber and silicone.

[0051] The detachable expandable control device for the tablet computer allows for quick transformation into a convenient gaming device or electronic drawing board as needed. When not in use, the control mechanism can be detached from the supporting body, effectively reducing size and adapting to different usage scenarios. Simultaneously, the supporting body also provides protection for the tablet computer. Furthermore, this unique locking structure facilitates both easy installation and disassembly, making it simple and practical.

[0052] like Figure 8-10 As shown, the locking component 4 is an improvement on the above embodiment, and can also be implemented using the following structure.

[0053] The locking assembly 4 includes a rotatable and retractable latch component 41 disposed on the support body 1 and an elastic component 46 that keeps the latch component 41 in an extended state, and a fixing groove 31 disposed on the control mechanism 2 that cooperates with the latch component 41 for locking. The latch component 41 includes a latch body 411 and a locking pin 412 connected to the latch body 411 and fitted with the elastic component 46. The latch body 411 has a rotatable latch 43 and a push rod mechanism 47 that causes the latch 43 to rotate in the installation or disassembly direction. That is, the latch component 41 is disposed in a fixing cavity 11 on the support body 1, and the fixing cavity 11 has a fixing hole 12, in which the latch 43 is located. At least a portion of the latch 43 extends out of the surface of the support body 1 from the fixing hole 12 in the fixing cavity 11. A limiting part 4110 is provided between the latch body 411 and the fixing hole 12 to restrict the free extension and retraction of the latch body 411.

[0054] The push rod mechanism includes a push rod 47 horizontally disposed on the latch body 411 and two push blocks 471 disposed on the push rod 47, as well as a mating groove 434 disposed on the latch 43 that engages with the two push blocks 471. The mating groove 434, in conjunction with the horizontally moving push blocks 471, causes the latch 43 to rotate in the direction of movement. The mating groove 434 has rotating inclined surfaces at both ends that engage with the push blocks 471. At least during disassembly, the rotation direction of the latch 43 is consistent with the disassembly direction, ensuring resistance during disassembly and reducing disassembly difficulty. A pivot 433 is provided between the latch 43 and the latch body 411, allowing it to rotate within a certain angle. The push rod 47 is located in the mounting hole horizontally positioned on the latch body 411. During installation, the latch body 411 is subjected to a force to the right, causing the supporting body 1 or the fixing hole 12 to move the push rod 47 to the left. At this time, the left push block 471 engages with the left side of the mating groove 434, causing the latch 43 to rotate a certain angle in the installation direction. The angle between the first inclined surface 432 on the latch 43 and the installation direction increases, thereby reducing resistance and making the latch 43 easier to compress. After locking into place, the angle between the second inclined surface 431 on the latch 43 and the fixing groove 31 is the smallest, and the resistance between them is the greatest, which can effectively prevent accidental loosening. When disassembly is required, since the left side of the push rod 47 has already contacted the fixing hole 12 or is located at the leftmost position during installation, when subjected to a force to the right of the bearing body 1 or the fixing hole 12, the locking tongue 43 moves to the left, causing the push rod 47 to move to the right. The push block 471 on the right side of the push rod 47 engages with the right side of the mating groove 434, causing the locking tongue 43 to rotate at a certain angle in the disassembly direction. This increases the angle between the second inclined surface 431 on the locking tongue 43 and the installation direction, thereby reducing resistance and making the locking tongue 43 easier to compress, reducing resistance during disassembly. This achieves both reduced resistance during installation or disassembly and improved stability during locking.

[0055] As needed, the rotation direction of the locking tongue 43 can also be consistent with the disassembly and / or installation directions, which can reduce the resistance in the disassembly direction and / or installation direction, while not affecting the two-way fixing effect after locking. The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable and expandable control device for a tablet computer, characterized in that, The device includes a support body that is fixed and electrically connected to a tablet computer. The support body has detachable control mechanisms on opposite sides. Each control mechanism has a control circuit that connects to the tablet computer via the support body and a control button or handle that operates the tablet computer via the control circuit. Each control mechanism is connected to the support body via a detachable connection mechanism and an electrical connection mechanism. When the detachable connection mechanism is separated, the control mechanism is disconnected from the tablet computer. The detachable connection mechanism includes a groove on the support body and a slide rail structure on the control mechanism. The groove has a lock that locks the positions of the support body and control mechanism when the groove and slide rail structure are properly engaged. The locking assembly is capable of changing the angle between the locking and unlocking directions. The locking assembly includes a rotatable and retractable latch component mounted on the supporting body, an elastic component that keeps the latch component in an extended state, and a fixing groove located in the control mechanism that engages with the latch component for locking. The latch component includes a latch body and a locking pin connected to the latch body and fitted with the elastic component. The latch body has a latch and a push rod mechanism that allows the latch to rotate in the installation or disassembly direction. The push rod mechanism includes a push rod mounted on the latch body and two push blocks mounted on the push rod, as well as a mating groove where the latch engages with the two push blocks. This mating groove, when engaged by the horizontally moving two push blocks, causes the latch to rotate in the moving direction.

2. The detachable expandable control device for a tablet computer according to claim 1, characterized in that, The electrical signal connection mechanism includes a first signal connector located at the end of the sliding direction of the slide and a second signal connector located at the control mechanism, wherein the first signal connector and the second signal connector are matched with each other.

3. The detachable expandable control device for a tablet computer according to claim 1, characterized in that, The latch extends at least partially beyond the surface of the supporting body, and a limiting part is provided between the latch body and the supporting body to restrict the free extension and retraction of the latch body.

4. The detachable expandable control device for a tablet computer according to claim 1, characterized in that, The two ends of the mating groove are respectively provided with rotating inclined surfaces that cooperate with the push block, and the rotation direction of the locking tongue is at least consistent with the disassembly direction.

5. The detachable expandable control device for a tablet computer according to claim 3 or 4, characterized in that, The locking tongue has a first inclined surface in the direction of installation and cooperation between the control mechanism and the supporting body, and a second inclined surface in the disassembly direction.

6. The detachable expandable control device for a tablet computer according to claim 5, characterized in that, The angle formed by the first inclined plane and the installation or disassembly direction is smaller than the angle formed by the second inclined plane and the installation or disassembly direction, wherein the installation or disassembly direction is a straight mating surface between the load-bearing body and the control mechanism.

7. The detachable expandable control device for a tablet computer according to claim 5, characterized in that, The angle between the second inclined plane and the disassembly direction decreases during disassembly.

8. The detachable expandable control device for a tablet computer according to claim 6, characterized in that, The angle between the first inclined surface and the installation or disassembly direction decreases or remains unchanged during installation.

9. The detachable expandable control device for a tablet computer according to claim 6, characterized in that, When the fixing groove is in the locked position, the side of the first inclined surface near the locking tongue is set as the mating inclined surface.

10. The detachable expandable control device for a tablet computer according to claim 9, characterized in that, When the fixing groove engages with the locking tongue, the side of the second inclined surface near the locking tongue is set as a limiting inclined surface. When in the locked position, there is a gap between the first inclined surface and the engaging inclined surface.

11. The detachable expandable control device for a tablet computer according to claim 10, characterized in that, The fixed groove has a mating inclined surface with a second magnet that engages with the first magnet on the first inclined surface.

12. The detachable expandable control device for a tablet computer according to claim 1, characterized in that, An elastic layer is provided between the end of the chute in the installation direction and the control mechanism.

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