Module limiting structure, module mounting structure and intelligent interaction panel

Abstract

The utility model discloses a module limiting structure, a module mounting structure and an intelligent interaction tablet, and the module limiting structure comprises an intelligent interaction tablet main body which is provided with a module mounting groove for mounting a functional module and a bayonet lock; the bayonet lock is movably arranged and has a locking state and an unlocking state, in the locking state, the bayonet lock can stretch into the module mounting groove to limit movement of the functional module mounted in the module mounting groove, and in the unlocking state, the bayonet lock retreats from the module mounting groove to relieve limiting of the functional module mounted in the module mounting groove; the bayonet lock is made of materials capable of being attracted by magnetic force, and the bayonet lock can be driven to move from the locking state to the unlocking state by attracting the bayonet lock to move through external magnetic force. The bayonet lock used for limiting the function module to move in the module mounting groove is driven by magnetic force, so that equipment with magnetic force needs to be adopted in the dismounting operation process, the dismounting operation cannot be completed by hands, the dismounting difficulty can be increased, and the risk that the function module is dismounted is reduced.

Description

Technical Field

[0001] The present application relates to the field of smart interactive tablets, and in particular to a module limiting structure and a module mounting structure applied to a smart interactive tablet, and a smart interactive tablet that performs module mounting through the module limiting structure. Background Art

[0002] In order to save basic costs or reduce export certification fees, existing smart interactive tablets usually have some external functional modules. The functional modules are detachably installed on the smart interactive tablet through the module installation slots on the smart interactive tablet. Generally, the functional modules can be removed by anyone nearby by hand, which may cause the loss or damage of the functional modules, resulting in abnormal functions of the smart interactive tablet and certain economic losses. Utility Model Content

[0003] One purpose of the embodiments of the present application is to provide a module limiting structure, a module installation structure and a smart interactive tablet, which can prevent the functional module from being disassembled by hand and improve the safety of the functional module installation.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] On the one hand, a module limiting structure is provided, comprising a smart interactive tablet body, wherein the smart interactive tablet body is provided with a module installation slot and a latch for installing a functional module;

[0006] The bayonet is movably arranged and has a locked state and an unlocked state. In the locked state, the bayonet can extend into the module installation slot to restrict the movement of the functional module installed in the module installation slot. In the unlocked state, the bayonet withdraws from the module installation slot to release the limit on the functional module installed in the module installation slot.

[0007] The bayonet is made of a material that can be attracted by magnetic force, and the movement of the bayonet from the locked state to the unlocked state can be driven by attracting the bayonet with external magnetic force.

[0008] The latch pin is preferably made of ferrimagnetic material. Ferrimagnetic material has weak magnetism and will generate magnetism under the action of an external magnetic field, but will quickly disappear after the external magnetic field disappears. Specifically, it includes ferrite, magnetite, etc.

[0009] The external magnetic force preferably adopts magnetized ferromagnetic materials such as nickel, cobalt, manganese, samarium, neodymium, yttrium and other elements and their alloys.

[0010] It should be pointed out that the above materials are not intended to limit the present solution. In actual application, other materials with relevant functions that can be thought of by those skilled in the art can also be used to make the latch and the external magnetic force generating device.

[0011] By using magnetic force to drive the pin used to limit the movement of the functional module in the module installation slot, nearby personnel need to use magnetic equipment during the disassembly operation and cannot complete the disassembly by hand. This can increase the difficulty of disassembly to a certain extent and reduce the risk of the functional module being disassembled.

[0012] Optionally, a guide structure is provided on the side of the module installation slot, and the latch can be movably arranged relative to the functional module by being guided by the guide structure.

[0013] By providing a guide structure for the latch pin, the movement of the latch pin can be performed along a predetermined trajectory, thereby avoiding problems such as invalid locking and unlocking failure due to inaccurate movement position of the latch pin.

[0014] Optionally, the guide structure includes a guide shell, the bayonet is movably arranged in the guide shell, and a through hole is opened on the surface of the guide shell facing the inside of the module installation slot, and the bayonet can extend into the inside of the module installation slot through the through hole.

[0015] Optionally, a locking spring is also included, which is configured to always apply a force to the locking pin toward the inside of the module installation slot, and the force applied by the locking spring to the locking pin is smaller than the adsorption force applied by the external magnetic force on the locking pin.

[0016] By setting a locking spring to provide a locking force for the locking pin to limit the functional module, and setting the force applied by the locking spring to the locking pin to be smaller than the adsorption force applied by the external magnetic force on the locking pin, when the adsorption force applied to the locking pin reaches a certain level, the locking pin can compress the locking spring under the action of the adsorption force, thereby moving to the unlocked state.

[0017] Optionally, a first guide surface is provided on one side of the bayonet toward the functional module insertion direction, and during the functional module insertion process, the first guide surface can be pushed against to push the bayonet to retract.

[0018] By setting a first guide surface on the latch, during the insertion of the functional module, the functional module first contacts the first guide surface, gradually compressing the latch so that the latch pushes the latch spring to deform, and the latch moves to the unlocked state. This arrangement makes the insertion process of the functional module without the need to independently operate the latch, and the operation is simpler.

[0019] Optionally, the locking spring is sleeved on the outside of the locking pin and located inside the guide housing.

[0020] Optionally, it also includes a fixing bolt, and the guide shell is installed on the smart interactive tablet body through the fixing bolt, and the fixing bolt is made of paramagnetic material.

[0021] By making the fixing bolt out of paramagnetic material, during the unlocking process, the external magnetic device is close to the fixing bolt, causing the fixing bolt to generate magnetism, and the magnetized fixing bolt can generate attraction to the bayonet, thereby causing the bayonet to move toward the unlocking state. This arrangement can reduce the position requirements for the external magnetic device and the bayonet, and when the distance between the two is far, the bayonet can also be adsorbed by causing the fixing bolt to generate magnetism.

[0022] Optionally, it also includes a fixed bracket, which is fixedly connected to the smart interactive tablet body, and a spring fixing groove is provided on the bayonet. One end of the clamping spring is arranged in the spring fixing groove and abuts against the bayonet, and the other end abuts against the fixed bracket.

[0023] On the other hand, a module installation structure is provided, including a functional module and a module limiting structure as described above, wherein the functional module is selectively installed in the module installation slot, and a limiting slot is provided on the functional module corresponding to the bayonet. In a locked state, the bayonet is inserted into the limiting slot, and in an unlocked state, the bayonet completely withdraws from the limiting slot.

[0024] Installing the functional module through the module limiting structure can increase the difficulty of disassembling the functional module and improve the safety of the functional module.

[0025] The limiting groove is a structure on the functional module corresponding to the bayonet pin, and the bayonet pin is inserted into the limiting groove to achieve more effective and stable clamping and fixing.

[0026] Optionally, there are two module limiting structures, and the two module limiting structures are arranged at intervals.

[0027] On the other hand, a smart interactive tablet is provided, comprising a frame, a back cover and the module limiting structure as described above; the latch is located between the module to be installed and the frame, or the latch is located between the module to be installed and the back cover.

[0028] The electronic device can install functional modules through the above-mentioned module limiting structure. On the one hand, it can provide optional functional modules to make the electronic device more flexible to use. On the other hand, it can prevent the functional modules installed thereon from being arbitrarily disassembled, causing loss of electronic device functions and causing economic losses.

[0029] The positional relationship between the above-mentioned latch and the module to be installed as well as the frame and the back shell will determine the operation position for unlocking it. The present application provides two specific solutions for unlocking the module at the front side of the frame or the back side of the back shell.

[0030] The beneficial effect of the present application is that by using magnetic force to drive the pin used to limit the movement of the functional module in the module installation slot, nearby personnel need to use magnetic equipment during the disassembly operation and cannot complete the disassembly by hand, which can increase the difficulty of disassembly to a certain extent and reduce the risk of the functional module being disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application is further described in detail below based on the drawings and embodiments.

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure after the module is installed in the module limiting structure described in one embodiment of the present application.

[0033] Figure 2 This is a schematic diagram of the disassembled state of the module limiting structure described in one embodiment of the present application after the module is installed.

[0034] Figure 3 This is a cross-sectional schematic diagram of a module after the module is installed in the module limiting structure described in one embodiment of the present application.

[0035] Figure 4 for Figure 3 Enlarged view of point I in the middle.

[0036] Figure 5 This is a cross-sectional schematic diagram of the module limiting structure described in one embodiment of the present application in a disassembled state after the module is installed.

[0037] Figure 6 It is a cross-sectional schematic diagram of a latch according to an embodiment of the present application.

[0038] Figure 7 This is a schematic diagram of the three-dimensional structure after the module is installed in the module limiting structure described in another embodiment of the present application.

[0039] Figure 8 This is a schematic diagram of the three-dimensional structure from another perspective after the module is installed in the module limiting structure described in another embodiment of the present application.

[0040] Fig. 9 This is a schematic diagram of the module limit structure after the module is installed in another embodiment of the present application.

[0041] Fig.10 for Fig. 9 A partial enlarged view of point II in the middle.

[0042] Fig.11 This is a schematic cross-sectional view of a module after the module is installed in the module limiting structure described in another embodiment of the present application.

[0043] Fig.12 for Fig.11 Enlarged view of point III in the middle.

[0044] In the figure:

[0045] 100. Smart interactive tablet body; 110. Module mounting slot; 120. Pin; 121. First guide surface; 122. Spring fixing slot; 130. Fixed bracket; 140. Guide structure; 141. Through hole; 150. Snap-on spring; 160. Fixing bolt; 200. Functional module; 210. Limiting slot; 220. Magnetic adsorption device. DETAILED DESCRIPTION

[0046] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0047] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] The smart interactive tablet is an all-in-one device that integrates touch screen, display, computer, audio and video functions, and can be used in meetings, teaching, training and other occasions.

[0050] The hardware components of the smart interactive tablet mainly include:

[0051] Touch screen, used for user interaction with the device, which can be operated with fingers or stylus. Display screen, used to display images and text. Processor, used to process data such as images, text and video. Audio and video system, used to play audio and video.

[0052] Existing smart interactive tablets are equipped with some external modules, such as Wi-Fi modules. Due to issues involving authentication IP and fees, these modules are often not directly installed on the machines for export models to save authentication fees. These modules will be plugged in at the user end for use. At the same time, when electronic devices have optional functions, in order to facilitate self-installation by users, it is also a common practice to provide function module slots for installing extended function modules.

[0053] The current module fixing scheme is as follows:

[0054] (1) A slide rail bracket with a module installed inside the machine;

[0055] (2) Double-sided tape is attached to the corresponding module positions on the small and medium rear shells, and magnets are attached to the surface of the double-sided tape;

[0056] (3) After the Wi-Fi module is inserted into the slide rail, the module surface cover is a steel metal cover, and the magnet can absorb the cover to prevent the module from falling off.

[0057] However, the functional module installed by the above-mentioned fixing structure can be disassembled by nearby personnel by hand, and the functional module can be disassembled by simply overcoming the magnetic attraction. Easy disassembly may result in the loss of the functional module, causing the electronic device to lose the corresponding function.

[0058] Based on the above, if Figure 1-12 As shown, this embodiment provides a module limiting structure, including a smart interactive tablet body 100, on which a module installation slot 110 and a latch 120 for installing a functional module 200 are provided;

[0059] The bayonet 120 is movably arranged and has a locked state and an unlocked state. In the locked state, the bayonet 120 can extend into the module installation slot 110 to restrict the movement of the functional module 200 installed in the module installation slot 110. In the unlocked state, the bayonet 120 withdraws from the module installation slot 110 to release the restriction on the functional module 200 installed in the module installation slot 110.

[0060] The latch 120 is made of a material that can be attracted by magnetic force, and the movement of the latch 120 from the locked state to the unlocked state can be driven by attracting the latch 120 with external magnetic force.

[0061] In the present application, the functional module 200 can slide in the module installation slot 110, and is installed in place when it slides to the bottom of the module installation slot 110. The latch 120 can selectively engage with the functional module 200, and limit the functional module 200 in the module installation slot 110 when it is installed in place. By using magnetic force to drive the latch 120 for limiting the movement of the functional module 200 in the module installation slot 110, nearby personnel need to use magnetic equipment during the disassembly operation, and cannot complete the disassembly by hand, which can increase the difficulty of disassembly to a certain extent and reduce the risk of the functional module 200 being disassembled.

[0062] It should be pointed out that the external magnetic adsorption described in the present application is performed by a magnetic adsorption device 220 .

[0063] In the present application, a guide structure 140 is disposed on the side of the module installation slot 110 , and the latch 120 can be movably disposed relative to the functional module 200 through the guidance of the guide structure 140 .

[0064] Specifically, the specific setting method of the guide structure 140 in the present application can be to open a hole in the side wall of the module installation groove 110, the hole serves as a guide structure, and the pin moves along the axial direction of the hole to form a directional movement.

[0065] In an optional embodiment of the present application, the guide structure 140 also includes a countersunk hole extending from the side wall of the module mounting slot 110 toward the interior of the module mounting slot 110, and a through hole is provided at the bottom of the countersunk hole to connect the inside and outside of the module mounting slot, and the inner wall of the countersunk hole forms a guide surface for guidance, and the pin 120 can extend through the through hole to the interior of the module mounting slot 110 to limit the functional module 200.

[0066] In another optional embodiment of the present application, the guide structure 140 can also be a guide member installed on the outside of the side wall of the module mounting slot 110, which is fixed at an opening on the side wall of the module mounting slot 110. The pin 120 is arranged inside the guide member and can extend through the opening to the inside of the module mounting slot 110 to limit the functional module 200.

[0067] Preferably, the moving direction of the latch 120 is perpendicular to the moving direction of the functional module 200 in the module installation slot 110 .

[0068] By providing a guide structure 140 for the latch pin 120 , the latch pin 120 can move along a predetermined trajectory, thereby avoiding problems such as invalid locking and unlocking failure due to inaccurate movement of the latch pin 120 .

[0069] Specifically, refer to Figure 4 , 12As shown, in an optional embodiment of the present application, the guide structure 140 includes a guide shell, the pin 120 is movably arranged in the guide shell, and a through hole 141 is opened on the surface of the guide shell facing the inside of the module mounting slot 110, and the pin 120 can extend through the through hole 141 to the inside of the module mounting slot 110.

[0070] The relative positions of the guide housing and the electronic device are fixed, and the latch 120 is limited by the guide housing so that the moving track of the latch 120 relative to the electronic device is fixed, so as to achieve more reliable locking and unlocking.

[0071] Further, see Figure 2-5 As shown in Figures 9-12, the module limiting structure provided in the embodiment of the present application also includes a locking spring 150, and the locking spring 150 is configured to always apply a force to the locking pin 120 toward the inside of the module mounting slot 110, and the force applied by the locking spring 150 to the locking pin 120 is smaller than the adsorption force applied by the external magnetic force to the locking pin 120.

[0072] By setting a locking spring 150 to provide a locking force for the locking pin 120 to limit the functional module 200, and setting the force applied by the locking spring 150 to the locking pin 120 to be smaller than the adsorption force applied by the external magnetic force on the locking pin 120, when the adsorption force applied to the locking pin 120 reaches a certain level, the locking pin 120 can compress the locking spring 150 under the action of the adsorption force, thereby moving to the unlocked state.

[0073] During operation, when no external magnetic force is applied to the latch pin 120, the latch spring 150 pushes the latch pin 120 to move to the locked position. At this time, if there is a functional module 200 installed in the module installation slot 110, the latch pin 120 locks the functional module 200. When the functional module 200 is pulled outward by external force, the functional module 200 cannot be pulled out due to the locking of the latch pin 120. When the functional module 200 in the module installation slot 110 needs to be disassembled, it is necessary to apply magnetic force to the latch pin 120, and when the magnetic attraction force received by the latch pin 120 is greater than the elastic force applied to it by the latch spring 150, the latch pin 120 moves to the unlocked position. At this time, the functional module 200 can be pulled out of the module installation slot 110 by external force, and the disassembly of the functional module 200 is completed.

[0074] Reference Figure 6 As shown, a first guide surface 121 is provided on one side of the latch 120 facing the insertion direction of the functional module 200 . During the insertion process of the functional module 200 , the first guide surface 121 can be pushed to push the latch 120 to retract.

[0075] By setting a first guide surface 121 on the latch 120, during the insertion of the functional module 200, the functional module 200 first contacts the first guide surface 121, and gradually compresses the latch 120 so that the latch 120 pushes the latch spring 150 to deform, and the latch 120 moves to the unlocked state. This arrangement makes the insertion process of the functional module 200 easier without the need to independently operate the latch 120, and the operation is simpler.

[0076] The present application also provides a specific assembly structure of the clamping spring 150 and the clamping pin 120, referring to Fig.12 As shown, the locking spring 150 is sleeved on the outside of the locking pin 120 and is located inside the guide housing.

[0077] Specifically, refer to Fig.12 As shown, the latch 120 is provided with a spring fixing groove 122, one end of the latch spring 150 is arranged in the spring fixing groove 122 and abuts against the latch 120, and the other end abuts against the smart interactive tablet body 100. The two ends of the latch spring 150 abut against the smart interactive tablet body 100 and the latch 120, respectively, so as to facilitate the latch 120 to move relative to the smart interactive tablet body 100.

[0078] Reference Figure 9-12 As shown, in another optional embodiment of the present application, the module limiting structure further includes a fixing bolt 160, and the guide housing is mounted on the smart interactive flat panel body 100 through the fixing bolt 160. In this embodiment, the fixing bolt 160 serves as a fixing structure for fixing the guide housing on the electronic smart interactive flat panel body 100, and a threaded structure matched with the fixing bolt 160 is provided on the guide housing.

[0079] Furthermore, the fixing bolt 160 is made of a paramagnetic material. By making the fixing bolt 160 of a paramagnetic material, during the unlocking process, the external magnetic device is close to the fixing bolt 160, so that the fixing bolt 160 generates magnetism, and the fixing bolt 160 after generating magnetism can generate attraction to the bayonet 120, so that the bayonet 120 moves toward the unlocking state. Such a setting can reduce the position requirements of the external magnetic device and the bayonet 120. When the distance between the two is far, the bayonet 120 can also be adsorbed by making the fixing bolt 160 generate magnetism.

[0080] It is understandable that materials that are easily magnetized and temporarily generate magnetism are called paramagnetic materials. Under the action of an external magnetic field, the direction of the magnetic moment of a paramagnetic material will be aligned in the direction of the external magnetic field, thereby generating magnetism. When the external magnetic field is removed, the magnetic moment of the paramagnetic material will gradually lose its directionality and eventually return to its unmagnetized state. Common paramagnetic materials include: transition metals such as iron, nickel, and cobalt, rare earth elements such as neodymium and praseodymium, metal oxides such as ferrite, manganese-zinc ferrite, and organic compounds such as potassium ferrocyanide.

[0081] The fixing bolt 160 is made of paramagnetic material. When the driving pin 120 is moved to the unlocking position, the external magnetic force is removed, and the magnetic force on the fixing bolt 160 gradually weakens until it disappears. During this process, when the magnetic force on the fixing bolt 160 finds that the adsorption force on the pin 120 is insufficient to overcome the elastic force of the locking spring 150, the pin 120 returns to the locked state under the push of the elastic force of the locking spring 150.

[0082] Reference Figure 2-5 As shown, in another optional embodiment of the present application, a fixing bracket 130 is further included, wherein the fixing bracket 130 is fixedly connected to the smart interactive tablet body 100 , and the clamping spring 150 abuts against the fixing bracket 130 .

[0083] At the same time, the embodiment of the present application also provides a module installation structure, including a functional module 200 and the module limiting structure as described above, wherein the functional module 200 is selectively installed in the module installation slot 110. The installation of the functional module 200 through the module limiting structure can increase the difficulty of disassembling the functional module 200 and improve the safety of the functional module 200.

[0084] Optionally, a limiting groove 210 is provided on the functional module 200 corresponding to the bayonet 120, and the bayonet 120 is inserted into the limiting groove 210 in the locked state, and the bayonet 120 is completely withdrawn from the limiting groove 210 in the unlocked state. The limiting groove 210 is a structure on the functional module 200 corresponding to the bayonet 120, and the bayonet 120 is inserted into the limiting groove 210 to achieve more effective and stable clamping and fixing.

[0085] Optionally, there are two module limiting structures, and the two module limiting structures are arranged at intervals.

[0086] The stability of limiting the functional module 200 can be improved by providing two module limiting structures.

[0087] Provided is a smart interactive tablet, comprising a frame, a rear cover and the module limiting structure as described above.

[0088] The smart interactive tablet installs the functional module 200 through the above-mentioned module limiting structure. On the one hand, it can provide optional functional modules 200, making the smart interactive tablet more flexible to use. On the other hand, it can prevent the functional modules 200 installed thereon from being arbitrarily disassembled, resulting in loss of functions of the smart interactive tablet and causing economic losses.

[0089] Optionally, the latch 120 is located between the module to be installed and the frame, or the latch 120 is located between the module to be installed and the rear shell.

[0090] The positional relationship between the above-mentioned latch 120 and the functional module to be installed, as well as the frame and the back shell will determine the operation position for unlocking it. The present application provides two specific solutions for unlocking the module on the front side of the frame or the back side of the back panel.

[0091] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0092] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0093] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0094] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A module limiting structure, characterized in that: It comprises an intelligent interactive tablet body (100), wherein the intelligent interactive tablet body (100) is provided with a module installation slot (110) and a latch (120) for installing a functional module (200); The bayonet (120) is movably arranged and has a locked state and an unlocked state. In the locked state, the bayonet (120) can extend into the module installation slot (110) to restrict the movement of the functional module (200) installed in the module installation slot (110). In the unlocked state, the bayonet (120) withdraws from the module installation slot (110) to release the position restriction on the functional module (200) installed in the module installation slot (110). The latch pin (120) is made of a material that can be attracted by magnetic force, and the movement of the latch pin (120) from a locked state to an unlocked state can be driven by attracting the latch pin (120) with external magnetic force.

2. The module limiting structure according to claim 1, characterized in that: A guide structure (140) is provided on the side of the module installation slot (110), and the latch (120) can be movably arranged relative to the functional module (200) through the guidance of the guide structure (140).

3. The module limiting structure according to claim 2, characterized in that: The guide structure (140) includes a guide shell, and the bayonet (120) is movably arranged in the guide shell. A through hole (141) is provided on the surface of the guide shell facing the inside of the module installation slot (110), and the bayonet (120) can extend through the through hole (141) to the inside of the module installation slot (110).

4. The module limiting structure according to claim 3, characterized in that: It also includes a locking spring (150), which is configured to always apply a force to the locking pin (120) toward the inside of the module installation slot (110), and the force applied by the locking spring (150) to the locking pin (120) is smaller than the adsorption force applied by the external magnetic force to the locking pin (120).

5. The module limiting structure according to claim 4, characterized in that: A first guide surface (121) is provided on one side of the bayonet (120) facing the insertion direction of the functional module (200); during the insertion process of the functional module (200), the bayonet (120) can be pushed against the first guide surface (121) to push the bayonet (120) to retract.

6. The module limiting structure according to claim 5, characterized in that: The clamping spring (150) is sleeved on the outside of the clamping pin (120) and is located inside the guide housing.

7. The module limiting structure according to claim 6, characterized in that: It also comprises a fixing bolt (160), the guide housing is mounted on the intelligent interactive flat panel body (100) via the fixing bolt (160), and the fixing bolt (160) is made of paramagnetic material.

8. The module limiting structure according to claim 5, characterized in that: The device also comprises a fixing bracket (130), wherein the fixing bracket (130) is fixedly connected to the smart interactive tablet body (100), the bayonet (120) is provided with a spring fixing groove (122), one end of the clamping spring (150) is arranged in the spring fixing groove (122) and abuts against the bayonet (120), and the other end abuts against the fixing bracket (130).

9. A module installation structure, characterized in that: The invention comprises a functional module (200) and a module limiting structure as described in any one of claims 1 to 8, wherein the functional module (200) is selectively installed in the module installation slot (110), and a limiting slot (210) is provided on the functional module (200) corresponding to the bayonet (120); in a locked state, the bayonet (120) is inserted into the limiting slot (210), and in an unlocked state, the bayonet (120) completely withdraws from the limiting slot (210).

10. A smart interactive tablet, characterized in that: It comprises a frame, a rear shell and the module limiting structure according to any one of claims 1 to 8, wherein the latch (120) is located between the module to be installed and the frame, or the latch (120) is located between the module to be installed and the rear shell.

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