Interactive flat panel

Abstract

The present invention relates to the technical field of electronic devices. Disclosed is an interactive flat panel, comprising a backplane (10) and a plastic rear shell (20), wherein the backplane (10) is provided with several first fixing portions (11), and first waist-shaped vias (24) corresponding to the first fixing portions (11) are provided in the plastic rear shell (20); the interactive flat panel further comprises first fixing members each configured to movably pass through the first waist-shaped via (24) and be fixedly connected to the first fixing portion (11); and when the first waist-shaped via (24) is fitted to the first fixing portion (11) by means of the first fixing member, a movement gap is formed between the wall of the first waist-shaped via (24) and the first fixing member, and the plastic rear shell (20) is also connected to a rear cover (30) and a shielding shell (50) in the interactive flat panel in a clearance-fit manner. In the interactive flat panel, the plastic rear shell (20) is used. Since the plastic rear shell (20) is easy to machine, and the cost of a plastic component and the process cost are lower than those of a metal rear shell, the processing difficulty and related cost of the interactive flat panel are reduced.

Description

An interactive tablet Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to an interactive tablet. Background Art

[0002] Current display devices, such as interactive conference tablets, typically consist of a backplane module, a frame assembly, and a display module. To simplify processing and assembly, each component of the display device is modularized, facilitating subsequent inspection and maintenance.

[0003] In the related art, a frame back shell is required to be provided between the frame assembly and the back panel module of the display device. The frame back shell is respectively connected to the back panel module and the frame assembly so that the three cooperate to enclose an installation space for functional modules (such as microphones, speakers, camera units, etc.). The frame back shell needs to be connected to a series of components such as the frame and the back panel by screw locking, and it also needs to form an assembly relationship with the functional module components provided in the installation space. However, because the frame back shell is a metal component in the related art, the processing process of the frame back shell is relatively complicated. The material and metal processing technology also make the material cost and processing cost of the frame back shell relatively high, which is not conducive to cost reduction of product equipment and batch processing production.

[0004] Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide an interactive tablet that solves the problems of complex processing technology and high cost of the frame and back shell.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] Provided is an interactive tablet, applied to electronic equipment, comprising:

[0008] a back plate provided with a plurality of first fixing portions; and

[0009] A plastic back shell, wherein the plastic back shell is provided with first waist-shaped through holes corresponding to the first fixing portions respectively;

[0010] a first fixing member configured to movably pass through the first waist-shaped via hole and be fixedly connected to the first fixing portion; in an installed and mated state, a movable gap is formed between the hole wall of the first waist-shaped via hole and the first fixing member along a first direction, so that the plastic back cover can move relative to the back plate under the constraints of the first waist-shaped via hole and the first fixing member;

[0011] A back cover, which is provided on the back plate and the plastic back shell, the back cover is fixedly connected to the back plate and movably matched with the plastic back shell;

[0012] The shielding shell is fixedly connected to the back plate, and the shielding shell extends to at least one end portion of the plastic rear shell along the long side direction thereof, and is movably matched with the plastic rear shell.

[0013] The beneficial effects of the present application are as follows: the interactive tablet adopts a plastic back shell, which is easy to process and has lower plastic component and process costs than metal back shells, thereby reducing the difficulty of processing the interactive tablet and related costs. In addition, by providing a mounting position for the plastic back shell on the back panel and setting a plurality of first fixing parts on the back panel, the first waist-shaped vias of the plastic back shell can be assembled on the first fixing parts through the first fixing parts, which not only ensures that the plastic back shell can form a stable assembly relationship with the back panel through the first fixing parts, but also allows the plastic back shell to move relative to the back panel through the movable gap between the first waist-shaped vias and the first fixing parts when the plastic back shell is deformed relative to the back panel, so that the plastic back shell and the back panel can adapt to the relative displacement caused by the deformation.

[0014] Similarly, the back cover and shielding shell that form a corresponding matching relationship with the plastic back shell also adopt a movable matching method with the plastic back shell to avoid the back plate, back cover, shielding shell and other components from arching due to deformation of the plastic back shell when they are fixedly connected to the plastic back shell, or the stress on the connection structure between the components increases, so as to avoid local damage to the components and ensure the integrity of the overall appearance of the electronic device, thereby effectively extending the service life of the product and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0016] FIG1 is a schematic diagram of an interactive tablet according to an embodiment of the present application;

[0017] FIG2 is an enlarged view of portion A of FIG1 ;

[0018] FIG3 is an exploded view of a local structure of the interactive tablet according to an embodiment of the present application;

[0019] FIG4 is an enlarged view of portion B of FIG3 ;

[0020] FIG5 is a schematic diagram of the structure of the plastic rear shell according to an embodiment of the present application;

[0021] FIG6 is one of the connection methods between the back cover and the plastic back shell according to an embodiment of the present application;

[0022] FIG7 shows a second connection method between the back cover and the plastic back shell according to an embodiment of the present application;

[0023] FIG8 is a partial exploded view of the plastic rear housing, frame, and shielding housing according to an embodiment of the present application;

[0024] FIG9 is a schematic diagram of the connection structure between the frame and the plastic rear cover according to an embodiment of the present application;

[0025] FIG10 is a partial bottom view of the interactive tablet according to an embodiment of the present application;

[0026] FIG11 is a schematic diagram of the cooperation structure between the plastic rear shell and the shielding shell according to an embodiment of the present application.

[0027] In the figure: 10, back panel; 11, first fixing part; 20, plastic back shell; 21, first shell edge; 22, second shell edge; 221, movable slot; 23, avoidance hole; 24, first waist-shaped through hole; 25, second waist-shaped through hole; 26, third waist-shaped through hole; 27, fourth waist-shaped through hole; 28, first plate body; 29, second plate body; 291, overlap; 30, back cover; 31, plug-in; 32, second fixing part; 40, frame; 41, first expansion joint; 42, mounting bracket; 421, third fixing part; 422, module fixing part; 423, connecting hole; 50, shielding shell; 51, fourth fixing part; 52, plug tongue; 53, second expansion joint; 60, speaker; 70, dust cover; 71, via structure. DETAILED DESCRIPTION

[0028] 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 will be further described in detail below with reference to the accompanying drawings. 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.

[0029] In the description of this application, unless otherwise specified or limited, the terms "connected" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] The current display device (such as conference interactive tablet) structure is generally composed of a back panel module, a frame assembly, and a display module. In order to reduce the difficulty of equipment processing and assembly, each part of the display device adopts a modular processing method, which is also conducive to later inspection and maintenance.

[0032] As can be seen from the background technology, in the related technologies of display devices, a frame back shell is required to be provided between the frame assembly and the back panel module of the display device, and the frame back shell is respectively connected to the back panel module and the frame assembly so that the three cooperate to enclose an installation space for functional modules (such as a microphone, a speaker 60, a camera unit, etc.), wherein the frame back shell needs to be connected to a series of components of the display device by screw locking, and it also needs to form an assembly relationship with the functional module parts provided in the installation space. However, since the frame back shell is a metal component in the related technologies, the processing procedures of the frame back shell are relatively complicated, and the material and metal processing technology also make the material cost and processing cost of the frame back shell relatively high, which is not conducive to cost reduction of product equipment and batch processing production.

[0033] This embodiment provides an interactive tablet. Compared with traditional interactive tablets, this solution replaces the metal frame back shell in the related art with a plastic back shell described later in this embodiment, thereby solving a series of problems such as the complex processing technology and high cost of the overall back shell and the interactive tablet.

[0034] For example, the interactive flat panel of this embodiment can be called a display in some application scenarios, or simply called a display screen, screen, etc. In addition to having human-computer interaction functions, its main function is to realize the output of image information. Specifically, the above-mentioned related display devices generally include two backlight forms: direct-type and side-entry type. It is mainly composed of a display module (not shown) and a backlight module to realize the image display and image lighting functions. Among them, the display module is used to provide image display function, and a glass panel for protecting the display module will be set on the front side of the display module, while the backlight module is used to provide the brightness of the image displayed by the display module and protect the back side of the display device.

[0035] As an optional embodiment, the interactive tablet described above can be applied to commercial scenarios, such as: LCD advertising machines, conference display screens, LCD splicing screens, touch-sensitive all-in-one machines, outdoor advertising machines, digital smart water signs, self-service terminals, customized commercial displays, etc., all of which belong to the commercial display category. In addition, the interactive tablet can also be used as a teaching blackboard and conference tablet in teaching or commercial conference scenarios. For example, the interactive tablet can be used as a blackboard in current traditional teaching scenarios in teaching scenarios, and can also be used in conjunction with current writing blackboards for teaching. In commercial memory scenarios, in addition to providing functions such as slide presentation, video and audio playback, the interactive tablet also has the function of a writing whiteboard, which makes it convenient for conference personnel to directly annotate slides, videos and other image content, so that the progress of teaching, meetings and other related activities can be more efficient and smooth.

[0036] It is understood that the interactive tablet of this embodiment can implement its interactive functions using capacitive touch or infrared touch. The interactive tablet can be used as a display device requiring touch functionality, such as a conference tablet, smart blackboard, or commercial display. The interactive tablet of this embodiment can operate the content displayed on the display module and realize human-computer interaction through touch technology. It integrates one or more functions of a projector, whiteboard, screen, audio, television, and video conferencing terminal. Users can touch the display module with their fingers or a stylus. The intelligent processing system generates handwriting based on the user's touch input and displays it on the LCD panel, or generates control operations based on the user's touch input to process the content displayed on the LCD panel.

[0037] Please refer to Figures 1 to 3 and 9. Before explaining the solution in detail, it should be understood that in the present application, for each component in the interactive tablet solution, the side close to the top of the interactive tablet is the upper side of each component, and conversely, the side close to the bottom of the interactive tablet is the lower side of each component; and, the side to which the display screen of the interactive tablet faces (that is, the side of the interactive tablet used to provide image display function) is the front side of each component, which is the "front" direction indicated by the arrow in the accompanying drawings. Conversely, the side of the back panel 10 facing away from the user is the rear side of each component, which is the "rear" direction indicated by the arrow in the accompanying drawings.

[0038] To achieve the above purpose, please continue to refer to Figures 1 to 10. The interactive tablet includes a back panel 10 and a plastic back cover 20. The back panel 10 serves as a supporting structure for the backlight module. In the application of the display device, the back panel 10 is used to provide a supporting position for components such as the backlight source and the optical film.

[0039] In the above embodiment, the interactive tablet adopts a plastic back cover, which is easy to process and has lower component and process costs than metal back covers, thereby reducing the processing difficulty and related costs of the interactive tablet.

[0040] However, because the interactive tablet in this embodiment uses a plastic back cover, the back panel 10 and related components in the interactive tablet (such as the back cover 30, the shielding shell 50, etc.) have different thermal expansion coefficients than the plastic back cover 20. The plastic back cover 20 and other components connected to it will deform in different scenarios such as transportation and use, as well as under the influence of thermal expansion and contraction. The positional relationship between the components cannot be adaptively adjusted, which can easily cause the overall appearance of the display device to deform, or local features of the product to be damaged, and the connection relationship between components to be destroyed. This affects the structural integrity and integrity of the product, shortens the product's service life, and reduces the user experience. To address this problem, this embodiment adopts the following solution.

[0041] According to the above solution, a plurality of first fixing portions 11 are provided on the back plate 10 , and the first fixing portions 11 are used to form a relatively fixed connection and cooperation relationship with an external fixing member.

[0042] In one embodiment, the portion of the back panel 10 provided with the first fixing portion 11 can provide an installation position for the plastic shell. Exemplarily, when the back panel 10 and the plastic shell are assembled, one side of the plastic shell is mounted on the back panel 10. This embodiment provides a specific matching method between the plastic shell and the back panel 10. As shown in Figures 1 to 4, the front side of the plastic shell is at least partially mounted on the rear side of the back panel 10. In addition to being able to block part of the rear side of the back panel 10, the plastic back cover 20 can also block the rear side of the frame 40 in the specific application scenario of the display device, thereby improving the aesthetics of the rear side of the device. At the same time, it can also cooperate with the back panel 10 and the frame 40 to enclose and define an installation space for accommodating functional modules, thereby meeting the product requirements of the display device.

[0043] Correspondingly, the plastic back shell 20 is provided with first waist-shaped through holes 24 corresponding to each first fixing portion 11. In this embodiment, the number of the first waist-shaped through holes 24 is set to a structural form consistent with the number of the first fixing portions 11, and when the plastic back shell 20 is placed on the installation position of the plastic back shell 20 provided by the back plate 10, each first waist-shaped through hole 24 can correspond one-to-one with the position of each first fixing portion 11, so that the first waist-shaped through hole 24 and the first fixing portion 11 can be installed and cooperated with the external fixing part in a relative state.

[0044] It should be understood that the waist-shaped vias (including the first waist-shaped via 24, the second waist-shaped via 25, the third waist-shaped via 26 and the fourth waist-shaped via 27) are through holes opened on the plastic back shell 20. The opposite ends of each waist-shaped through hole can be arc-shaped through holes, or through hole structures of other shapes (such as rectangles and other irregular shapes). The two ends of the waist-shaped through holes are connected by two mutually parallel planes to form a via structure 71 similar to a long strip on the corresponding component.

[0045] As a specific embodiment, the first waist-shaped via 24 is extended along the first direction on the plastic back shell 20. The first direction described in this embodiment is specifically determined by the plane where the part of the first waist-shaped via 24 is opened on the plastic back shell 20. Taking the first waist-shaped via 24 opened on the subsequent first plate 28 as an example, the first direction can be any direction on the plane of the first plate 28, such as, parallel to, or perpendicular to, or inclined to the long side direction of the first plate 28. Taking the third waist-shaped via 26 opened on the second plate 29 as an example, at this time, the first direction can also be understood as any direction on the plane of the second plate 29. It has no specific limiting function for this embodiment and is only used for an explanation of this embodiment. For example, please refer to Figure 5. The plastic back cover 20 of this embodiment includes a first plate 28 and a second plate 29 that are arranged at an angle. When the plastic back cover 20 is specifically assembled on the entire display device, the first plate 28 is used to connect with the back plate 10, that is, the first plate 28 is arranged on the rear side of the display device, and one side of the second plate 29 is connected to the first plate 28, and the other side thereof extends toward the front side of the display device and is arranged on the lower side of the display device. According to the above description, in this example, the first waist-shaped via 24 is opened on the first plate 28. At this time, the first direction in this embodiment refers to the direction parallel to the plate surface of the first plate 28 (that is, the up and down shown in Figures 1-3 of this embodiment, and the left and right directions of the display device. Of course, the embodiment in which the first direction is inclined to the long side direction of the first plate 28 is not excluded, that is, the direction in which the first waist-shaped via 24 extends is not parallel and perpendicular to the long side direction of the first plate 28). Similarly, if the first waist-shaped via 24 is opened on the second plate 29, the first direction depends on the setting direction of the plate surface of the second plate 29. In this state, the first direction is parallel to the plate surface of the second plate 29. For example, when the first plate 28 is vertically set, the second plate 29 and the first plate 28 are set to a structural form with an angle of 90°, then the first direction is defined as the front and back directions shown in Figures 1-3 and the left and right directions of the display device.

[0046] According to the above-mentioned setting method, the plastic back shell 20 is provided with a first waist-shaped through hole 24 corresponding to the first fixing portion 11 on the back plate 10, so that the plastic back shell 20 has the freedom of movement relative to the back plate 10 within a certain range along the direction defined by the first waist-shaped through hole 24. The first waist-shaped through hole 24 can form a relative positional relationship with the first fixing portion 11 within the range defined by its hole portion, so that the plastic back shell 20 can be appropriately adjusted in position relative to the back plate 10 along the through hole direction of the first waist-shaped through hole 24, effectively reducing the processing difficulty of the interactive flat panel, compensating for processing errors and assembly errors between components, and ensuring that the plastic back shell 20 can maintain integrity with the back plate 10 after assembly.

[0047] Of course, in other embodiments, the relative numbers of the first fixing portions 11 and the first waist-shaped vias 24 may be different. For example, if the back panel 10 is used as a universal component of the display device, multiple first fixing portions 11 may be machined on the back panel 10, while the plastic back cover 20 may be provided with a smaller number of first waist-shaped vias 24 than the first fixing portions 11. It is understood that in this embodiment, each first fixing portion 11 does not need to correspond one-to-one to each first waist-shaped via 24; it is sufficient that some of the first fixing portions 11 can correspond to the first waist-shaped vias 24 on the plastic back cover 20. Alternatively, a method of machining multiple first waist-shaped vias 24 on the plastic back cover 20 and providing a smaller number of first fixing portions 11 on the back panel 10 is also possible. This embodiment will not be described in detail here.

[0048] In one embodiment, the first waist-shaped via 24, as well as the second waist-shaped via 25, the third waist-shaped via 26, and the fourth waist-shaped via 27 described later herein, can employ the same structural form. Of course, different waist-shaped vias are not limited to employing different structural forms. Different waist-shaped vias only need to be configured to match the structure of the fixed portion at their location.

[0049] The interactive tablet of this embodiment uses a first fixing member (not shown) to implement the installation and matching of the first fixing portion 11 and the first waist-shaped through-hole 24. The first fixing member is configured to be movable through the first waist-shaped through-hole 24 and connected and fixed to the first fixing portion 11. When the first fixing member passes through the first waist-shaped through-hole 24, there is a clearance fit between the first fixing member and the first waist-shaped through-hole 24. The first fixing member can pass through the first waist-shaped through-hole 24 and produce relative displacement with the plastic back cover 20 along the through-hole direction opened by the first waist-shaped through-hole 24. The hole walls at both ends of the first waist-shaped through-hole 24 along the through-hole direction can limit the range of movement between the first fixing member and the plastic back cover 20, and the displacement direction between the plastic back cover 20 and the first fixing member depends on the through-hole direction extended by the first waist-shaped through-hole 24.

[0050] Taking the above-mentioned embodiment in which the first waist-shaped via 24 is arranged on the first plate body 28 as an example, when the first waist-shaped via 24 is installed and matched with the first fixing part 11 through the first fixing part, a movable gap is formed between the hole wall of the first waist-shaped via 24 and the first fixing part, so that the plastic back shell 20 can produce movable deformation relative to the back plate 10 in a direction parallel to the first waist-shaped via 24 under the mutual constraint of the first waist-shaped via 24 and the first fixing part. Please continue to refer to Figures 1 to 4. The plastic back cover 20 of this embodiment is arranged on the lower side of the back plate 10, and extends along the lower edge of the back plate 10 toward the left and right sides of the display device to form a long strip structure. Under the above-mentioned arrangement of the first waist-shaped via 24, the plastic back cover 20 can be displaced relative to the back plate 10 along the left and right directions and / or the up and down directions of the display device. In this way, no matter whether the display device is in use, transportation, etc., or is affected by environmental factors such as thermal expansion and contraction, when the plastic back cover 20 is displaced relative to the back plate 10, the stress generated between the two can be released through the first waist-shaped via 24, thereby avoiding the problem of the plastic back cover 20 being arched due to deformation, or the connection relationship with the back plate 10 being destroyed, thereby effectively extending the service life of the product and improving the user experience.

[0051] It should be noted that the back panel 10 and the plastic back shell 20 of this embodiment need to be connected through at least two first fixing parts 11 and first waist-shaped vias 24. For example, the first fixing parts 11 are arranged at intervals along the length direction of the lower edge of the back panel 10, and the first waist-shaped vias 24 are also arranged at intervals along the length direction of the plastic back shell 20. With this structural form, on the basis of being able to improve the structural stability between the back panel 10 and the plastic back shell 20, it is also possible to achieve adaptive adjustment of the displacement of the plastic back shell 20 through the relative displacement of the first waist-shaped vias 24 and the first fixing parts when the plastic back shell 20 is relatively displaced with the back panel 10. Moreover, if only one first fixing part 11 is provided to cooperate with the first waist-shaped via 24, not only will the connection stability between the plastic back shell 20 and the back panel 10 be lost, but the two ends of the plastic back shell 20 will not be affected by the action of the first fixing parts, and the above-mentioned technical problems will not exist.

[0052] In one embodiment, the plastic back cover 20 of this embodiment is formed by processing a plastic material. Compared to conventional metal back cover structures, the plastic back cover 20 can effectively reduce the weight of the electronic device, facilitating the lightweight design of the display device. Furthermore, whereas conventional metal back covers require surface treatment after processing, the plastic back cover 20 can omit the corresponding surface treatment process after processing, thereby reducing production costs.

[0053] In display device applications, the plastic back cover 20 needs to cooperate with the frame 40 to provide installation space for functional modules. Generally, an antenna module for transmitting and receiving antenna signals is installed within the installation space. In this embodiment, the frame 40 of the interactive tablet is equipped with an antenna module, and the plastic back cover 20 covers one side of the antenna module. In traditional metal back cover solutions, to prevent the metal back cover from shielding the antenna signal, a signal via is provided on the metal back cover to allow the antenna module to be exposed to the display device from one side of the metal back cover. After the antenna module is installed, the signal via is sealed with an insulating cover. This undoubtedly increases the processing and material costs of the metal back cover. However, in the display device application of the plastic back cover 20 of this embodiment, since the plastic back cover 20 itself does not shield the antenna signal, when an antenna module is installed within the installation space, there is no need to process signal vias compatible with the antenna module on the plastic back cover 20, thereby reducing the product cost of the display device.

[0054] For example, the back panel 10 of this embodiment is a metal part, which can be formed by stamping, milling and other processing methods. Since the plastic back shell 20 is made of plastic material, the thermal expansion coefficients of the back panel 10 and the plastic back shell 20 are different. Here, thermal expansion generally refers to the fact that when the external pressure remains unchanged, the volume of most substances increases when the temperature rises, and decreases when the temperature drops. In other words, under the same temperature change, the volume of the back panel 10 and the plastic back shell 20 increases or decreases to different degrees, resulting in the situation where the two components generate interaction forces due to the different volumes in the assembled state. Therefore, the above-mentioned method of matching the back panel 10 and the plastic back shell 20 through the first waist-shaped via 24 can allow the plastic back shell 20 and the back panel 10 to produce a certain degree of relative displacement, so that the matching relationship between the two can adapt to a series of problems caused by different degrees of deformation. This allows the overall appearance of the display device to maintain good integrity and prevents the plastic rear cover 20 from expanding or contracting relative to the back plate 10, thereby causing local damage to the features, or destroying the connection relationship with the back plate 10.

[0055] It should also be noted that in the traditional metal back shell solution, the metal back shell will be processed with threaded holes for connecting to the back plate 10 and other components connected thereto. However, since the present embodiment uses a plastic back shell 20, threaded holes cannot be directly processed on the plastic back shell 20. According to the traditional back shell connection concept, an optional implementation method is to set a hot melt nut on the plastic back shell 20. However, the connection strength between the hot melt nut and the plastic back shell 20 is also relatively low. Therefore, the present embodiment provides a waist-shaped through-hole structure, and uses the first fixing member to connect with the first fixing portion 11, avoiding the process of setting a hot melt nut on the plastic back shell 20, which not only saves the processing steps of the components and reduces the processing cost, but also effectively improves the connection strength between the plastic back shell 20 and the various components.

[0056] In one embodiment, the first fixing member of this embodiment includes a connecting portion for forming a fixed fitting relationship with the first fixing portion 11, and a resisting portion protruding from at least one side of the connecting portion for limiting the plastic back shell 20, wherein the connecting portion is connected to the resisting portion, and the first fixing member is movable through the first waist-shaped through-hole 24 through the connecting portion and is connected and fixed to the first fixing portion 11, and the resisting portion is arranged on the side of the plastic back shell 20 away from the back plate 10, and the resisting portion cooperates with the back plate 10 to limit the movement of the plastic back shell 20.

[0057] Continuing with the above embodiment, the connecting portion and the resisting portion can be processed in an integral manner, such as by milling, injection molding and other processes, or they can be processed in a split manner and then assembled into one piece to achieve processing. For example, after the connecting portion and the resisting portion are processed and formed separately, the two are connected by means of snap connection, screw connection, welding and the like to form a first fixing part.

[0058] It can be understood that the first fixing portion 11 and the connecting portion in the first fixing member can be fixedly matched by adopting a detachable connection assembly method. In this way, by removing the first fixing member from the first fixing portion 11, the plastic back cover 20 can be removed from the back panel 10, which is beneficial to the later disassembly, inspection and maintenance of the electronic device.

[0059] For example, the first fixing portion 11 and the first fixing member can adopt a pin-and-socket connection, a snap-fit ​​structure, a wedge-tightening structure, a screw-connected structure, etc. In this embodiment, the first fixing portion 11 is a threaded hole opened on the frame 40 as an example, and a screw is correspondingly used as the first fixing member. The connecting portion of the first fixing member is the threaded segment of the screw, which is fixedly connected to the threaded hole of the first fixing portion 11 by a threaded connection, and the retaining portion is the screw head of the screw. The screw head radially protrudes from the threaded segment, so that the threaded segment can pass through the first waist-shaped through-hole 24 while the screw head can extend outside the first waist-shaped through-hole 24, thereby limiting the plastic back cover 20 along the second direction.

[0060] It should be noted that the second direction of this embodiment can be understood as the direction in which the plastic back cover 20 moves closer to or away from the back panel 10. Taking the above-mentioned structure including the first plate body 28 and the second plate body 29 as an example, the second direction of the first plate body 28 can be understood as its front-to-back direction, and the second direction of the second plate body 29 can be understood as its up-down direction.

[0061] Continuing with Figures 1-7 , the interactive tablet also includes a back cover 30, which is positioned behind the back panel 10. The back cover 30 is fixedly connected to the back panel 10 and flexibly engages with the plastic rear shell 20. By positioning the back cover 30 on the back panel 10, a cavity is defined between the back cover 30 and the back panel 10 for accommodating electronic components and some functional modules.

[0062] It should be understood that in the application of interactive tablets, high-power electronic components (such as a motherboard) are provided on the back panel 10. In order to comply with product safety requirements, the position where the corresponding electronic components are provided on the back panel 10 needs to be covered with the back cover 30 described in this article. The back cover 30 is a metal sheet metal component. Therefore, the back cover 30 cannot be processed in an integrated manner with the plastic back shell 20 and needs to be provided independently of the plastic back shell 20.

[0063] Continuing with the above solution, the rear shell of the back panel 10 provides installation positions for device modules such as the main board, power board, and wires in the display device. Some of the device modules that are moved on can be electrically connected to the functional modules located in the installation space formed by the plastic rear shell 20 and the frame 40, and the back cover 30 is used to cover the said installation position to protect the corresponding device modules.

[0064] In this embodiment, the back cover 30 is positioned on the rear side of the back panel 10 and is positioned near the bottom of the back panel 10. If a conventional connection method is used, the back cover 30 and the plastic back shell 20 need to be provided with respective connection structures for connecting to the back panel 10 at positions opposite to the back cover 30. To simplify the corresponding connection structure, thereby improving the compactness of the interactive tablet and ensuring the structural stability of the connection structure of the back cover 30, this embodiment designs a corresponding mating structure between the back cover 30 and the plastic back shell 20. As shown in Figures 1-3 and 6-7, the bottom side of the back cover 30 is positioned adjacent to a portion of the plastic back shell 20, and the plastic back shell 20 and the back cover 30 are movably connected. Thus, in this structural form, a portion of the plastic back shell 20 is directly connected to the back panel 10 via the first waist-shaped via 24, the first fixing member, and the first fixing portion 11, while the remaining portion of the plastic back shell 20 can be connected to the back panel 10 through the back cover 30. In order to avoid the interaction force between the plastic back cover 20 and the back cover 30 when the plastic back cover 20 is deformed, in this solution, the plastic back cover 20 can move relative to the back cover 30, so that when the plastic back cover 20 is deformed enough to cause relative displacement with the back cover 30, the two can generate relative displacement to adapt to the relative position relationship between the plastic back cover 20 and the back cover 30 after deformation.

[0065] Please continue to refer to Figures 3 to 5. The plastic back shell 20 is installed and matched with the back plate 10 and the back cover 30 respectively using its upper edge close to the back plate 10. In this embodiment, the upper edge of the plastic back shell 20 is provided with adjacent first shell edges 21 and second shell edges 22 in the long side direction, and each first waist-shaped through hole 24 is spaced apart on the first shell edge 21. The second shell edge 22 is movably connected to the back cover 30 so that the second shell edge 22 is matched with the back plate 10 through the back cover 30.

[0066] In this example, the first shell edge 21 is mounted on the rear side of the back panel 10 and is connected to the back panel 10 through the above-mentioned embodiment. In order to avoid interference between the back cover 30 and the plastic back cover 20 when installed, a step structure is formed between the first shell edge 21 and the second shell edge 22. The second shell edge 22 is set to be smaller than the first shell edge 21 in the up and down directions. The second shell edge 22 forms a mating relationship with the back cover 30 along the length direction of the back cover 30, and the step surface on the step structure between the first shell edge 21 and the second shell edge 22 is set on the side of the back cover 30.

[0067] Of course, in other embodiments, the first shell edge 21 and the second shell edge 22 can also be formed on the adjacent two side edges of the plastic back shell 20 respectively, and the above-mentioned matching method can also be used to achieve the installation matching of the plastic back shell 20 and the back plate 10.

[0068] Two embodiments of the movable connection between the plastic back shell 20 and the back cover 30 are provided below:

[0069] 1. The plastic back shell 20 and the back cover 30 can be movably inserted and matched.

[0070] Referring to Figure 6 , the plastic back cover 20 is provided with an active slot 221, and the back cover 30 is provided with an insert 31. In this embodiment, the insert 31 extends from the edge of the back cover 30. In this embodiment, the insert 31 and the active slot 221 extend along the long sides of the back cover 30 and the plastic back cover 20, respectively. Furthermore, the insert 31 extends downward from the lower edge of the back cover 30, while the active slot 221 is formed on the inner side of the second edge 22. An upward-facing notch is defined at the top of the active slot 221.

[0071] Through the same installation principle as the above-mentioned structure, in another embodiment, the same technical effect can be achieved by providing the back cover 30 with a movable slot 221 and the plastic back shell 20 with a plug-in 31.

[0072] In this first movable connection embodiment, the plug-in 31 is adapted to the movable slot 221 structure so that the plug-in 31 can be movably inserted into the movable slot 221 to achieve the purpose of detachability of the back cover 30 and the plastic back shell 20, and the movable slot 221 is extended along the first direction to provide space for the plug-in 31 to move along the first direction. In this embodiment, part of the plastic back shell 20 is connected to the back plate 10 through the back cover 30. The back cover 30 and the back plate 10 are fixedly connected in such a way that the back cover 30 and the back plate 10 can be regarded as a whole. The relative movable direction of the back cover 30 and the plastic back shell 20 is the same as the relative movable direction of the back plate 10 and the plastic back shell 20, so that the displacement generated by the plastic back shell 20 during the deformation process is adapted to its connection with the back cover 30 and the back plate 10. For example, the first direction is horizontal to the first plate 28. That is, when the plastic back cover 20 deforms, the insert 31 and the movable slot 221 will move relative to each other to compensate for the deformation of the plastic back cover 20. The insert 31 can move in the movable slot 221 in the vertical direction and the left-right direction of the display device.

[0073] Second, the rear cover 30 and the plastic rear shell 20 can also be connected in the same manner as the back plate 10 and the plastic rear shell 20 to achieve a movable connection between the two.

[0074] Please refer to Figure 7. The back cover 30 is provided with a plurality of second fixing parts 32. The plastic back shell 20 is provided with second waist-shaped through holes 25 corresponding to each second fixing part 32. The second waist-shaped through holes 25 can be installed and matched with the second fixing parts 32 through second fixing parts. The hole wall of the second waist-shaped through hole 25 and the second fixing part form a movable gap, so that the plastic back shell 20 can move relative to the back cover 30 under the mutual constraint of the second waist-shaped through holes 25 and the second fixing part.

[0075] For example, the structure and coordination between the second fixing portion 32, the second waist-shaped via 25 and the second fixing member in this embodiment are consistent with the structure and coordination between the first fixing portion 11, the first waist-shaped via 24 and the first fixing member, and will not be described in detail in this embodiment.

[0076] Of course, the matching structure between the second fixing portion 32 and the second fixing member of this embodiment may not be limited to this. The second fixing portion 32 and the second fixing member may be fixedly connected by the above-mentioned matching methods such as the matching method of the socket and the pin, the matching method of the slot and the block, the matching method of the slot and the wedge, etc., and the second waist-shaped through hole 25 is used to provide avoidance and activity space for components such as the pin, block, and wedge.

[0077] The interactive tablet includes a frame 40. In electronic device applications, the frame 40 can be the primary supporting member of the device. In display device applications, it is used to support and fix the display module and backlight module in the device. Therefore, to ensure the structural strength of the frame 40, the frame 40 is a profile in this embodiment. A profile refers to a straight bar of metal formed by plastic processing and having a certain cross-sectional shape and size. It is understood that the profile can be solid or hollow, and this embodiment does not impose any specific structural restrictions.

[0078] 8 to 10 , the frame 40 is connected to the plastic rear shell 20 and is disposed on the side of the back plate 10 . An installation space for accommodating functional modules is formed between the frame 40 and the plastic rear shell 20 .

[0079] As shown in Figure 10, in order to avoid a series of problems caused by relative displacement between the plastic back shell 20 and the frame 40, a first expansion joint 41 is formed between the edge of the plastic back shell 20 and the frame 40. In this example, the first expansion joint 41 is arranged along the second direction so that there is a gap between the plastic back shell 20 and the frame 40 to move toward or away from each other. For example, in the vertical direction, the upper side of the plastic back shell 20 is connected to the back plate 10 through the above-mentioned structure, and the lower side of the plastic back shell 20 can extend to the lower side of the frame 40, shielding the rear side of the frame 40. At the same time, the first expansion joint 41 is formed between the lower edge of the plastic back shell 20 and the lower side of the frame 40. When the plastic back shell 20 contracts relative to the frame 40, the first expansion joint 41 will gradually widen. When the plastic back shell 20 expands relative to the frame 40, the first expansion joint 41 will gradually narrow.

[0080] In one embodiment, a clearance fit relationship can be formed between the lower side of the frame 40 and the lower shell edge of the plastic back shell 20. When the plastic back shell 20 is not deformed relative to the frame 40, there is no contact between the lower side of the frame 40 and the lower shell edge of the plastic back shell 20 to form a first expansion gap 41.

[0081] In this embodiment, the plastic back cover 20 forms an overlapping relationship with the frame 40 through its second plate 29, as shown in Figures 6-9. To ensure the integrity of the frame 40 and the plastic back cover 20, the second plate 29 extends from the end connected to the first plate 28 toward the lower side of the frame 40. An overlapping edge 291 extends from the edge of the second plate 29, and a stepped structure with a height difference is formed between the overlapping edge 291 and the second plate 29. The second plate 29 overlaps the inner side of the frame 40 through the overlapping edge 291, so that the outer surface of the second plate 29 can tend to remain flush with the outer surface of the frame 40. In this embodiment, a first expansion joint 41 is formed between the second plate 29 and the frame 40.

[0082] In one embodiment, since this embodiment uses a plastic back cover 20 and abandons the technical solution of using hot-melt nuts, when a functional module is installed in the installation space, the functional module cannot form a connection relationship with the plastic back cover 20. Therefore, in order to ensure that a good assembly relationship is maintained between the functional module, the frame 40 and the plastic back cover 20 in this embodiment, please refer to Figures 3-4, 8-9. This solution provides a mounting bracket 42 in the installation space to provide a mounting position for the functional module, wherein the mounting bracket 42 is fixedly connected to the frame 40, so that the functional module can form a connection with the frame 40 through the mounting bracket 42. It should be noted that since the plastic back cover 20 is made of plastic material, the weak structural strength of the plastic material makes it impossible to process threaded holes, and the hot melt nuts also have the problem of loose connection on the plastic back cover 20. Therefore, the design eliminates the threaded holes on the plastic back cover 20, and the functional module (such as the speaker) is installed on the frame 40 through the mounting bracket 42, so that there is no physical connection between the functional module and the plastic back cover 20.

[0083] In one embodiment, a mounting bracket 42 and the plastic back shell 20 need to form a mating relationship so that the lower portion of the plastic back shell 20 can be stably mounted by being relatively fixed to the frame 40. As shown in Figures 8 and 9, the mounting bracket 42 and the plastic back shell 20 adopt the assembly structure between the back plate 10 and the plastic back shell 20. Specifically, the mounting bracket 42 is provided with a plurality of third fixing portions 421, and the plastic back shell 20 is provided with third waist-shaped vias 26 corresponding to each third fixing portion 421. This allows the third waist-shaped vias 26 to be mounted and mated with the third fixing portions 421 via a third fixing member. After the plastic back shell 20 is connected to the frame 40 through the mounting bracket 42, in order to avoid the connection relationship between the plastic back shell 20 and the mounting bracket 42 being destroyed when the plastic back shell 20 is deformed relative to the frame 40, a third waist-shaped through hole 26 is used to provide a movable space for the plastic back shell 20 when it is deformed. In the assembled state of the plastic back shell 20 and the mounting bracket 42, a movable gap is formed between the hole wall of the third waist-shaped through hole 26 and the third fixing piece, so that the plastic back shell 20 can move relative to the frame 40 under the mutual constraint of the third waist-shaped through hole 26 and the third fixing piece. In the embodiment where the above-mentioned plastic back shell 20 includes a first plate body 28 and a second plate body 29, the third waist-shaped through hole 26 should be opened in the second plate body 29, that is, under the action of the third waist-shaped through hole 26, the second plate body 29 can produce relative displacement with the frame 40 along the front-to-back direction and / or left-to-right direction of the display device.

[0084] Continuing with the above embodiment, the functional module is fixed to the frame 40 through the mounting bracket 42, and the technical solution of connecting with the plastic back shell 20 is abandoned. In order to allow the interactive tablet to adapt to functional modules of different types of structures, please refer to Figures 3-4, 8-9. The plastic back shell 20 of this solution is provided with a avoidance hole 23 connected to the installation space at the position corresponding to the mounting bracket 42. The size of the avoidance hole 23 can be determined according to the size of the functional module to be installed on the display device, so that the functional module can be connected to the mounting bracket 42 after smoothly passing through the avoidance hole 23.

[0085] Specifically, a module fixing portion 422 is provided on the mounting bracket 42, and the module fixing portion 422 is used to provide an installation position for the functional module. The module fixing portion 422 is arranged opposite to the avoidance hole 23 so that the functional module can pass through the avoidance hole 23 and be installed and matched with the module fixing portion 422.

[0086] For example, the functional module of this embodiment uses a speaker 60 as an example. Two spaced-apart mounting brackets 42 may be provided on the frame 40. The two mounting brackets 42 are respectively configured to be detachably connected to opposite ends of the speaker 60. A space is provided between the two mounting brackets 42 for accommodating the speaker 60. The speaker 60 can extend through this space toward the front of the frame 40 and ultimately be exposed to the outside of the display device from the front of the frame 40. In this embodiment, the range of the avoidance hole 23 needs to be larger than the distance between the two mounting brackets 42 to allow the speaker 60 to enter the space through the avoidance hole 23.

[0087] When the frame 40 fixes the functional module through the mounting bracket 42, in order to protect the functional module, a detachable dust cover 70 can be further provided at the position of the plastic back shell 20 corresponding to the avoidance hole 23. Similarly, since the plastic frame 40 abandons the solution of setting a connecting structure, the dust cover 70 needs to be fixed through the frame 40 or the mounting bracket 42.

[0088] Please refer to Figure 8. In this embodiment, a connecting hole 423 can also be provided on the mounting bracket 42, and a through-hole structure 71 corresponding to the connecting hole 423 can be opened on the dust cover 70 to provide a fixing part to connect with the connecting hole 423 after passing through the through-hole structure 71. Here, the plastic bracket is located around the avoidance hole 23 to provide a support position for the shield, so that the dust cover 70 can be completely covered on the rear side of the avoidance hole 23.

[0089] Referring to Figures 8-11 , this embodiment further includes a shielding shell 50, which is configured to be disposed at the ends of the plastic back cover 20 along the longitudinal direction. That is, the shielding shell 50 can be disposed at the ends of the plastic back cover 20 along the left-right direction of the display device to shield the end space of the plastic back cover 20, thereby improving the structural strength of the plastic back cover 20 and the connection strength between the plastic back cover 20 and the back plate 10. The shielding shell 50 is fixedly connected to the back plate 10 and disposed at at least one end of the plastic back cover 20 along its longitudinal direction to shield the ends of the plastic back cover 20 and form a movable fit with the plastic back cover 20. In this way, the ends of the plastic back cover 20 can be connected to the back plate 10 through the shielding shell 50, thereby preventing damage to the ends of the plastic back cover 20 to a certain extent.

[0090] In an embodiment where the interactive tablet includes a frame 40 , the shielding shell 50 can be used to shield an installation space formed by the frame 40 and the plastic back shell 20 .

[0091] Similarly, in order to avoid the connection between the plastic back shell 20 and the shielding shell 50 being destroyed when the plastic back shell 20 is deformed, or the end features of the plastic back shell 20 being damaged due to excessive interaction force between the end and the shielding shell 50, the plastic back shell 20 of this embodiment adopts the same assembly structure as that between the plastic back shell 20 and the back plate 10.

[0092] In this embodiment, the plastic back shell 20 can be formed by an extrusion process, but the extrusion process cannot produce the shielding shell 50 structure located at the end of the plastic back shell 20 (such as the inclined surface on the shielding shell 50 and the convex portion for providing a space for electronic components such as the internal board of the interactive flat panel to avoid). In one embodiment, the shielding shell 50 can be integrally formed with the plastic back shell 20 by injection molding, but the injection molding process will obviously lead to an increase in processing costs, which is not in line with the original design intention of this solution. Therefore, the shielding shell 50 and the plastic back shell 20 are independently processed and formed, and are connected by assembly at a later time.

[0093] Continuing with the above solution, please refer to Figure 8. The shielding shell 50 is provided with a fourth fixing portion 51, and a fourth waist-shaped through-hole 27 corresponding to the fourth fixing portion 51 is opened on the plastic back shell 20. The fourth waist-shaped through-hole 27 can be installed and matched with the fourth fixing portion 51 through a fourth fixing member. A movable gap is formed between the hole wall of the fourth waist-shaped through-hole 27 and the fourth fixing member, so that the plastic back shell 20 can move relative to the shielding shell 50 under the mutual constraint of the fourth waist-shaped through-hole 27 and the fourth fixing member.

[0094] 11 , the end portion of the plastic rear shell 20 along the length direction can be hidden in the shielding shell 50 , and a movable space is formed in the shielding shell 50 along the length direction of the plastic rear shell 20 .

[0095] As an embodiment that is parallel to the above-mentioned solution, please refer to Figures 8 and 10. A tongue 52 is provided on the shell edge of the shielding shell 50, and the fourth fixing portion 51 is provided on the tongue 52. The tongue 52 and the surface of the shielding shell 50 form a limiting step. The limiting step structure is adapted to the plastic rear shell 20 so that the plastic rear shell 20 can be mounted on the tongue 52. A second expansion gap 53 is formed between the limiting step and the end of the plastic rear shell 20.

[0096] This embodiment adopts a combination of the above two structures in which the plastic rear shell 20 and the shielding shell 50 cooperate with each other.

[0097] For example, the longitudinal end of the first plate 28 of the plastic rear housing 20 is concealed within the shielding shell 50 to ensure a coherent appearance on the rear side of the display device. A tongue 52 is provided on the underside of the shielding shell 50 and overlaps the inner side of the longitudinal end of the second plate 29. The stepped surface of the stopper forms the aforementioned second expansion gap 53 with the end of the second plate 29, thereby ensuring that the underside of the second plate 29 and the shielding shell 50 are flush.

[0098] It should be noted that in this embodiment, the first waist-shaped via 24, the second waist-shaped via 25, the third waist-shaped via 26, and the fourth waist-shaped via 27 processed on the plastic back cover 20 can be directly formed on the plastic back cover 20 by a processing method of integrally molding with the plastic back cover 20, or each waist-shaped via (including the first waist-shaped via 24, the second waist-shaped via 25, the third waist-shaped via 26, and the fourth waist-shaped via 27) can be processed on the plastic back cover 20 by punching, cutting, milling, etc. after the plastic back cover 20 is processed and formed.

[0099] Moreover, the first fixing portion 11, the second fixing portion 32, the third fixing portion 421 and the fourth fixing portion 51 mentioned in this embodiment may also adopt the same structural form or different structural forms, as long as it can ensure that each fixing portion and its corresponding fixing part (including the first fixing part, the second fixing part, the third fixing part and the fourth fixing part) have an adaptive structural relationship so that the two can be installed and matched.

[0100] For example, taking the above-mentioned first fixing part 11, second fixing part 32, third fixing part 421 and fourth fixing part 51 as an example, all of which are threaded holes, the first fixing part, second fixing part, third fixing part and fourth fixing part corresponding to each fixing part can be set as screws adapted to the threaded holes.

[0101] In summary, this embodiment applies the plastic back cover 20 to the electronic device and improves the assembly structure between the plastic back cover 20 and the components connected thereto. This ensures that the plastic back cover 20 and the components maintain a good assembly relationship, and avoids a series of problems caused by relative deformation between the plastic back cover 20 and the components. This achieves the purpose of improving the appearance integrity and integrity of the electronic device, extending the service life of the device, and improving the user experience.

[0102] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0103] Throughout this specification, references to terms such as "an embodiment" or "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0104] In addition, it should be understood that although this specification is described in terms of 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0105] The technical principles of the present application have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the present application and are not to be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present application without inventive effort, and such implementations will fall within the scope of protection of the present application.

Claims

1. An interactive tablet, wherein: include: A back plate (10) is provided with a plurality of first fixing parts (11); as well as A plastic rear shell (20), wherein the plastic rear shell (20) is provided with first waist-shaped through holes (24) respectively corresponding to each of the first fixing portions (11); A first fixing member, which is configured to be movable through the first waist-shaped through hole (24) and connected and fixed to the first fixing portion (11); in an installed and matched state, a movable gap is formed between the hole wall of the first waist-shaped through hole (24) and the first fixing member, so that the plastic rear shell (20) can move relative to the back plate (10) under the constraints of the first waist-shaped through hole (24) and the first fixing member; A rear cover (30), which is arranged on the back plate (10) and the plastic rear shell (20), wherein the rear cover (30) is fixedly connected to the back plate (10), and the rear cover (30) and the plastic rear shell (20) are movably matched; A shielding shell (50) is fixedly connected to the back plate (10); the shielding shell (50) extends to at least one end of the plastic rear shell (20) along its long side direction and is movably matched with the plastic rear shell (20).

2. The interactive tablet according to claim 1, wherein: The first fixing member comprises a connecting portion and a resisting portion which are connected to each other, and the first fixing member movably passes through the first waist-shaped through hole (24) through the connecting portion and is connected and fixed to the first fixing portion (11); The blocking portion is arranged on a side of the plastic rear shell (20) away from the back plate (10), and the blocking portion cooperates with the back plate (10) to limit the movement of the plastic rear shell (20) along a first direction.

3. The interactive tablet according to claim 1, wherein: The plastic rear shell (20) is provided with adjacent first shell edges (21) and second shell edges (22) along its long side direction; The first waist-shaped through holes (24) are arranged at intervals on the first shell edge (21), and the second shell edge (22) is movably connected to the back cover (30) so that the second shell edge (22) is matched with the back plate (10) through the back cover (30).

4. The interactive tablet according to claim 3, wherein: The plastic rear shell (20) is mounted on the back plate (10) via the first shell edge (21); A step structure is formed between the first shell edge (21) and the second shell edge (22); the height of the second shell edge (22) in the up and down directions of the interactive flat panel is smaller than that of the first shell edge (21); the second shell edge (22) is mounted and matched with the rear cover (30) along the long side direction of the rear cover (30); and the step surface of the step structure is arranged on the side of the rear cover (30).

5. The interactive tablet according to claim 3 or 4, wherein: The plastic rear shell (20) and the rear cover (30) are movably plug-fitted and matched; The plastic rear shell (20) is provided with a movable slot (221), and the rear cover (30) is provided with a plug-in (31); or, the rear cover (30) is provided with a movable slot (221), and the plastic rear shell (20) is provided with a plug-in (31); The plug-in (31) is structurally compatible with the movable slot (221) so that the plug-in (31) can be movably inserted into the movable slot (221) to provide space for the plug-in (31) to move.

6. The interactive tablet according to claim 3 or 4, wherein: The rear cover (30) is provided with a plurality of second fixing parts (32), and the plastic rear shell (20) is provided with second waist-shaped through holes (25) respectively corresponding to each of the second fixing parts (32); The second waist-shaped through hole (25) can be installed and matched with the second fixing part (32) through the second fixing piece, and a movable gap is formed between the hole wall of the second waist-shaped through hole (25) and the second fixing piece, so that the plastic back shell (20) can move relative to the back cover (30) under the constraints of the second waist-shaped through hole (25) and the second fixing piece.

7. The interactive tablet according to claim 1, wherein: Also includes: A frame (40) is connected to the plastic rear shell (20) and is arranged on the side of the back plate (10); an installation space for accommodating a functional module is formed between the frame (40) and the plastic rear shell (20).

8. The interactive tablet according to claim 7, wherein: The frame (40) is provided with an antenna module, and the plastic rear shell (20) covers one side of the antenna module.

9. The interactive tablet according to claim 7, wherein: A first expansion joint (41) is formed between the shell edge of the plastic rear shell (20) and the frame (40).

10. The interactive tablet according to claim 7, wherein: A mounting bracket (42) is provided in the mounting space, and the mounting bracket (42) is fixedly connected to the frame (40); The mounting bracket (42) is provided with a plurality of third fixing parts (421), and the plastic back shell (20) is provided with third waist-shaped through holes (26) corresponding to the third fixing parts (421) respectively. The third waist-shaped through holes (26) can be installed and matched with the third fixing parts (421) through the third fixing parts, and a movable gap is formed between the hole wall of the third waist-shaped through hole (26) and the third fixing part, so that the plastic back shell (20) can move relative to the frame (40) under the constraints of the third waist-shaped through holes (26) and the third fixing part.

11. The interactive tablet according to claim 10, wherein: The plastic rear shell (20) is provided with a avoidance hole (23) communicating with the installation space at a position corresponding to the installation bracket (42); The mounting bracket (42) is provided with a module fixing portion (422), and the module fixing portion (422) is used to provide a mounting position for the functional module. The module fixing portion (422) is arranged relative to the avoidance hole (23), so that the functional module can pass through the avoidance hole (23) and be installed and matched with the module fixing portion (422).

12. The interactive tablet according to any one of claims 1-4, 7-11, wherein: The shielding shell (50) is provided with a fourth fixing portion (51), and the plastic rear shell (20) is provided with a fourth waist-shaped through hole (27) corresponding to the fourth fixing portion (51), and the fourth waist-shaped through hole (27) can be installed and matched with the fourth fixing portion (51) through the fourth fixing piece, and a movable gap is formed between the hole wall of the fourth waist-shaped through hole (27) and the fourth fixing piece, so that the plastic rear shell (20) can move relative to the shielding shell (50) under the constraints of the fourth waist-shaped through hole (27) and the fourth fixing piece.

13. The interactive tablet according to claim 12, wherein: The end portion of the plastic rear shell (20) along the long side direction is hidden in the shielding shell (50), and a movable space arranged along the length direction of the plastic rear shell (20) is formed in the shielding shell (50).

14. The interactive tablet according to claim 12, wherein: The shielding shell (50) is provided with an inserting tongue (52) at the shell edge, and the fourth fixing portion (51) is provided on the inserting tongue (52); The inserting tongue (52) and the surface of the shielding shell (50) form a limiting step, the limiting step is matched with the plastic rear shell (20) so that the plastic rear shell (20) can be mounted on the inserting tongue (52), and a second expansion joint (53) is formed between the limiting step and the end of the plastic rear shell (20).

Images