Touch frame component and intelligent interactive flat panel

Abstract

The present invention provides a touch frame assembly and an intelligent interactive flat panel. The touch frame assembly includes: an infrared touch frame, which includes a frame body and a PCB assembly disposed inside the frame body; a glass cover plate, which is located inside the PCB assembly; a fixing structure for fixing the glass cover plate to the infrared touch frame, and the glass cover plate controls the inward depression of the glass cover plate through the curvature of the frame body and / or the fixing structure. Through the technical solution provided by this application, it is possible to solve the problem in the prior art that the control of the inward depression of the glass cover plate by selecting glass results in large glass loss and high cost.

Description

Technical Field

[0001] The present invention relates to the technical field of touch display devices, and more particularly, to a touch frame assembly and an intelligent interactive flat panel. Background Art

[0002] At present, the infrared induction height (writing height) of the touch frame assembly is generally greater than 3.5 mm, and even for some products, the infrared writing height is greater than 4.5 mm. When users write, the sense of suspension is serious, resulting in a poor writing experience. In order to continuously improve the writing experience of users, continuously reducing the touch writing height is an inevitable development trend. One of the major limitations of the infrared writing height is the control of the concave of the glass cover plate.

[0003] Especially for large-size touch panels, the deformation of the glass cover plate is more difficult to control. The existing glass cover plate installation structure cannot effectively control the convexity of the glass cover plate. For display devices with a low infrared writing height, once the glass cover plate bulges, the infrared signal will be blocked, resulting in the failure of touch recognition. In the prior art, in order to achieve the concave of the glass cover plate, only the method of selecting glass can be used, which causes a very high loss of glass, low production efficiency, and high cost. Summary of the Invention

[0004] The present invention provides a touch frame assembly and an intelligent interactive flat panel to solve the problems in the prior art that the control of the concave of the glass cover plate by selecting glass results in large glass loss and high cost.

[0005] According to one aspect of the present invention, a touch frame assembly is provided. The touch frame assembly includes: an infrared touch frame, including a frame body and a PCB assembly disposed in the frame body; a glass cover plate, the glass cover plate is located inside the PCB assembly; a fixing structure for fixing the glass cover plate to the infrared touch frame, and the glass cover plate is controlled to be recessed inward by the curvature of the frame body and / or the fixing structure.

[0006] According to another aspect of the present invention, an intelligent interactive flat panel is provided, including a backlight module and the touch frame assembly provided above.

[0007] Applying the technical solution of the present invention, the touch frame assembly includes an infrared touch frame, a glass cover plate, and a fixing structure. After the glass cover plate is fixedly installed on the frame body by the fixing structure, the glass cover plate is controlled to be recessed inward by the curvature of the frame body and / or the fixing structure, thereby avoiding the infrared signal transmission of the PCB assembly being blocked due to the convexity of the glass cover plate during use, and ensuring the normal operation of infrared touch control. In addition, the display device adopting the above structure does not need to control the concave of the glass cover plate by selecting glass, which can reduce the loss of glass, improve the production efficiency, and reduce the production cost. Description of the Drawings

[0008] The accompanying drawings of the specification, which form a part of the present application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0009] Figure 1 A cross-sectional view of a touch frame assembly provided according to Embodiment 1 of the present invention is shown;

[0010] Figure 2 Another cross-sectional view of a touch frame assembly provided according to Embodiment 1 of the present invention is shown;

[0011] Figure 3 A cross-sectional view of a touch frame assembly provided according to Embodiment 2 of the present invention is shown;

[0012] Figure 4 A cross-sectional view of a touch frame assembly provided according to Embodiment 3 of the present invention is shown;

[0013] Figure 5 Another cross-sectional view of a touch frame assembly provided according to Embodiment 3 of the present invention is shown;

[0014] Figure 6 An exploded view of a touch frame assembly provided according to Embodiment 1 of the present invention is shown;

[0015] Figure 7 Shows Figure 6 A partial enlarged view at A in;

[0016] Figure 8 An assembly drawing of a touch frame assembly provided according to Embodiment 1 of the present invention is shown;

[0017] Figure 9 Shows Figure 8 A partial enlarged view at B in.

[0018] Among them, the above-mentioned drawings include the following reference numerals:

[0019] 10, infrared touch frame; 11, frame body; 111, first step; 112, first mounting groove; 1121, card slot; 1122, second step; 12, PCB assembly; 20, glass cover plate; 31, concave surface; 32, support pad; 40, light filter strip; 60, fixing member. Detailed Description of the Invention

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] As Figure 1 and Figure 2 shown, Embodiment 1 of the present invention provides a touch frame assembly. The touch frame assembly includes an infrared touch frame 10, a glass cover plate 20, and a fixing structure. The infrared touch frame 10 includes a frame body 11 and a PCB assembly 12 disposed within the frame body 11. The glass cover plate 20 is located inside the PCB assembly 12, and touch operations can be performed by touching the glass cover plate 20. By using the fixing structure disposed between the frame body 11 and the glass cover plate 20, the glass cover plate 20 can be fixed to the frame body 11. The glass cover plate 20 can be controlled to be recessed inward through the curvature of the frame body 11 and the fixing structure.

[0022] Applying the touch frame assembly provided in this embodiment, after the glass cover plate 20 is fixedly installed on the frame body 11 by using the fixing structure, the glass cover plate 20 can be controlled to be recessed inward through the curvature of the frame body 11 and the fixing structure, avoiding the infrared signal transmission of the PCB assembly 12 being blocked due to the outward convexity of the glass cover plate 20 during use, and ensuring the normal operation of infrared touch operations. In addition, for a display device adopting the above structure, such as an intelligent interactive flat panel, it is not necessary to select glass for the concave control of the glass cover plate 20, which can reduce the loss of glass, improve production efficiency, and has a simple structure and low cost.

[0023] In this embodiment, the frame body serves as the border of the display device and is obtained by bending and forming. It can be processed in various forms, such as roll forming, so that the frame body 11 forms a concave surface and is recessed inward, and the thickness of the frame body 11 remains consistent. As Figure 2 shown, the thickness of the frame body 11 remains consistent. In this embodiment, the backlight module is located inside the display device, the PCB assembly 12 is installed within the frame body 11, and the glass cover plate 20 is located inside the PCB assembly 12. It should be noted that the PCB assembly 12 is disposed within the frame body 11, and an infrared emitter and an infrared receiver are provided on the PCB assembly 12. The infrared rays emitted by the infrared emitter are received by the infrared receiver, and a horizontal and vertical cross infrared ray matrix is correspondingly formed above the glass cover plate. When a user touches the screen, the controller determines the specific position of the contact point on the screen, thereby completing the infrared touch operation.

[0024] AsFigure 1 and Figure 2 As shown, the glass cover plate 20 is located on the inner side of the PCB assembly 12. Since the frame 11 is bent inward, after the glass cover plate 20 is fixedly installed on the frame 11, the glass cover plate 20 will be concave inward due to the fit between the glass cover plate 20 and the bent frame 11. Specifically, the frame 11 forms a concave arc surface. When the glass cover plate 20 is fixedly connected to the frame 11, the glass cover plate 20 is deformed as the frame 11 is concave, so that the glass cover plate 20 is concave. Then, the glass cover plate 20 is fixed to the frame by the fixing member 60 to keep the concave of the glass cover plate 20, thereby preventing the glass cover plate 20 from blocking the infrared signal emitted by the PCB assembly 12 due to the convexity during use. Figure 1 As shown, the arrow in the figure indicates the transmission of infrared signals. At this time, the glass cover plate 20 is concave, and the signal is transmitted normally, thereby ensuring that the infrared touch operation is carried out normally.

[0025] like Figure 2 As shown, in this embodiment, the frame 11 is provided with an inner concave surface 31 for connecting the glass cover plate 20, the inner concave surface 31 is recessed toward the side away from the PCB assembly 12, and part of the surface of the glass cover plate 20 is attached to the inner concave surface 31. When the fixing structure fixes the glass cover plate 20 on the infrared touch frame, the glass cover plate 20 is kept in a concave state. The integral molding operation of the frame 11 is adopted to make the glass cover plate 20 installed thereon concave, which has a simple structure and low cost.

[0026] Specifically, one side of the frame 11 facing away from the PCB assembly 12 is bent to form a depression, and the glass cover plate 20 is fixedly installed on the frame 11 so that the glass cover plate 20 is depressed inwardly, that is, the frame 11 forms an inwardly concave surface 31. Specifically, when the glass cover plate 20 is fixedly connected in the frame 11, the glass cover plate 20 is deformed along with the depression of the frame 11, thereby realizing the inward depression of the glass cover plate 20, thereby preventing the glass cover plate 20 from blocking the infrared signal transmission of the PCB assembly 12 due to the outward bulge during use, thereby ensuring the normal infrared touch operation.

[0027] In this embodiment, the inner concave surface 31 is an arc-shaped concave surface. The arc-shaped concave surface structure is adopted to facilitate the use of the arc-shaped concave surface to deform the glass cover plate 20.

[0028] In this embodiment, the arc-shaped concave surface is a symmetric structure, and the glass cover plate 20 can be symmetrically recessed, making the inward recess of the glass cover plate 20 more stable. Preferably, the highest point of the arc-shaped concave surface is correspondingly arranged with the two ends of the glass cover plate 20, the lowest point of the arc-shaped concave surface is correspondingly arranged with the midpoint of the long side of the glass cover plate 20, the highest point of the arc-shaped concave surface is correspondingly arranged with the two ends of the frame body 11, and the lowest point of the arc-shaped concave surface is correspondingly arranged with the midpoint of the long side of the frame body 11, so that the glass cover plate 20 can be uniformly recessed, avoiding the glass cover plate 20 from cracking due to excessive local recess deformation. In addition, since the length of the long side of the glass cover plate 20 is large, it is easy for the glass cover plate 20 to bend inward from the middle, thereby realizing the inward recess of the glass cover plate 20, which is an optional solution.

[0029] In this embodiment, the height difference between the highest point and the lowest point of the arc-shaped concave surface is H, and the value range of H is 0.5 mm - 5 mm. It should be noted that when the value of H is too small, the bending of the glass cover plate 20 is not obvious enough. At this time, when the glass cover plate 20 bulges outward, it is easy to cause the infrared signal to be unable to be transmitted normally. When the value of H is too large, it is easy to cause the glass cover plate 20 to break. Therefore, the above value range of H is an optional solution.

[0030] In this embodiment, the outer contour of the glass cover plate 20 is rectangular, and the long side of the glass cover plate 20 is connected to the concave surface 31, which facilitates the deformation of the glass cover plate 20.

[0031] In this embodiment, the frame body 11 is a roll-formed bending profile, that is, the frame body 11 is roll-formed into an inwardly concave arc surface, which is convenient for processing and has a low cost. Among them, the thickness of the frame body 11 is kept consistent.

[0032] As Figure 1 、 Figure 6 and Figure 7 shown, the frame body 11 is provided with a first step 111 for supporting the glass cover plate 20. A part of the surface of the glass cover plate 20 abuts against the step surface of the first step 111, and the end of the glass cover plate 20 is supported by the first step 111. The above structure makes the installation of the glass cover plate 20 more convenient and the abutment more stable. After the glass cover plate 20 is placed on the first step 111, the glass cover plate 20 is fixed by a fixing structure, which can prevent the glass cover plate 20 from slipping off, and the first step 111 has a positioning function, which is convenient for the installation of the glass cover plate 20. Among them, Figure 1 there is a gap between the end of the glass cover plate 20 and the first step 111. Due to the machining errors in the machining process of each component, by setting this gap, it can be ensured that the glass cover plate 20 can be smoothly installed into the frame body 11.

[0033] Specifically, the concave surface 31 is disposed on the step surface of the first step 111. After the glass cover plate 20 is placed on the first step 111, the concavity of the glass cover plate 20 can be achieved while positioning it with the first step 111.

[0034] As Figure 1 , Figure 2 , Figure 8 and Figure 9 shown, in this embodiment, the display device further includes a plurality of fixing members 60, and each fixing member 60 is respectively connected to the inner surface of the frame body 11 and the glass cover plate 20. Thus, the fixing member 60 fixes the inner surface of the glass cover plate 20 to the frame, so that the glass cover plate 20 is firmly fixed within the frame body 11.

[0035] Specifically, the first end of the fixing member 60 is connected to the frame body 11 by a screw, the second end of the fixing member 60 is located above the first step 111, and the second end of the fixing member 60 presses on the glass cover plate 20 to firmly fix the glass cover plate 20 within the frame body 11.

[0036] In this embodiment, the fixing member 60 is a glass pressing block, and each glass pressing block is evenly distributed along the length direction of the glass cover plate 20, so that the glass cover plate 20 is stably fixed on the frame body 11. It should be noted that glass pressing blocks can also be provided on the short sides of the glass cover plate 20. However, since the length of the long side of the glass cover plate 20 is longer, setting glass pressing blocks on the long side can better achieve the stable connection of the glass cover plate 20. When installing the glass cover plate 20, by tightening the screws to lock the glass pressing blocks, the glass cover plate 20 is concaved and fixed on the frame body 11.

[0037] In other embodiments, the glass cover plate 20 can be adhesively connected to the concave surface 31. That is, the glass cover plate 20 is adhered to the inside of the frame body 11 using double-sided tape or liquid glue, thus achieving the fixed connection between the glass cover plate 20 and the frame body 11.

[0038] In this embodiment, the frame body 11 includes a first installation groove 112, and the PCB assembly 12 is disposed within the first installation groove 112, which facilitates installation and protects the PCB assembly 12.

[0039] Specifically, the groove wall of the first installation groove 112 is provided with a card slot 1121 and a second step 1122. One end of the PCB assembly 12 is snap-fitted with the card slot 1121, and the other end of the PCB assembly 12 is adhesively bonded to the step surface of the second step 1122, so that the PCB assembly 12 is stably disposed within the first installation groove 112, preventing the PCB assembly 12 from shaking and ensuring the normal operation of the touch operation.

[0040] In addition, the touch frame assembly further includes a light filtering strip 40. In order to stably connect the light filtering strip 40, the light filtering strip 40 is installed at the notch of the first installation groove 112.

[0041] Using the touch frame assembly of the first embodiment, the side of the frame body 11 facing away from the PCB assembly 12 is bent to form a depression, and the glass cover plate 20 is fixedly installed on the frame body 11 so that the glass cover plate 20 is recessed inward. Specifically, when the glass cover plate 20 is fixedly connected in the frame body 11, since the frame body 11 is fixed by the backlight module of the display device, the glass cover plate 20 is deformed as the frame body 11 is recessed, realizing the inward concavity of the glass cover plate 20, thereby avoiding the infrared signal transmission of the PCB assembly 12 being blocked due to the outward convexity of the glass cover plate 20 during use, and further ensuring the normal progress of infrared touch operation. In addition, the display device adopting the above structure does not need to control the inward concavity of the glass cover plate 20 by selecting glass, reducing the loss of glass and improving the production efficiency. The overall forming operation of the frame body 11 enables the glass cover plate 20 installed thereon to be recessed inward, with a simple structure and low cost.

[0042] As Figure 3 shown, the second embodiment of the present invention provides a touch frame assembly. The difference between the second embodiment and the first embodiment is that in the second embodiment, the thickness of the middle part of the frame body 11 is greater than the thickness of the two ends of the frame body 11 to form an inward concave surface 31.

[0043] In this embodiment, the frame body 11 is provided with a processing surface for connecting the glass cover plate 20. The processing surface is the inward concave surface 31. This processing surface can be obtained by machining. The inward concave surface 31 can be an arc-shaped concave surface or a stepped surface, as long as the processing surface gradually recesses from its two ends to the middle. The surface of the glass cover plate 20 is attached to the inward concave surface 31. At this time, the glass cover plate 20 is in close contact with the inward concave surface 31. The glass cover plate 20 is connected and fixed to the frame body 11 through a fixing member, so that the glass cover plate 20 bends inward, thereby causing the glass cover plate 20 to be recessed inward, and further avoiding the infrared signal emitted by the PCB assembly 12 being blocked due to the outward convexity of the glass cover plate 20 during use.

[0044] In this embodiment, the glass cover plate 20 is connected and fixed to the frame body 11 through a fixing member, which is the same as the solution in the first embodiment and will not be elaborated here.

[0045] Applying the touch frame component provided in this embodiment, the glass cover plate 20 is attached to the concave surface 31, causing the glass cover plate 20 to be recessed inward, thereby preventing the glass cover plate 20 from blocking the infrared signal transmission of the PCB component 12 due to outward convexity during use, and further ensuring the normal progress of infrared touch operation. In addition, for the display device with the above structure, only the concave surface 31 needs to be processed on the frame body 11, without the need to select glass for concave control of the glass cover plate 20, reducing the loss of glass and improving production efficiency. Moreover, the processing cost of the concave surface 31 is low and the concave of the glass cover plate 20 is realized, with a simple structure and low cost.

[0046] In this embodiment, the thickness of the middle part of the frame body 11 is greater than the thickness of the two ends of the frame body 11, that is, the concave surface 31 is formed by cutting the two ends of the frame body 11, making it more convenient to process the concave surface 31 of the frame body. The outer contour of the glass cover plate 20 is rectangular, and the long side of the glass cover plate 20 is connected to the concave surface 31. The length of the long side of the glass cover plate 20 is large. When the long side of the glass cover plate 20 is connected to the concave surface 31, it is easy for the glass cover plate 20 to be recessed inward from the middle.

[0047] Specifically, the concave surface 31 is an arc-shaped concave surface, and the arc-shaped concave surface is a symmetric structure, enabling the glass cover plate 20 to be symmetrically recessed, causing the glass cover plate 20 to have a uniform concave deformation. The highest point of the arc-shaped concave surface is correspondingly set with the two ends of the glass cover plate 20, that is, the highest point of the arc-shaped concave surface is the two end points of the frame body 11 or near the two end points of the frame body 11. The lowest point of the arc-shaped concave surface is correspondingly set with the midpoint of the long side of the glass cover plate 20, that is, the lowest point of the arc-shaped concave surface is the midpoint of the frame body 11 or near the midpoint of the frame body 11, further enabling the glass cover plate 20 to achieve uniform recessing and avoiding the glass cover plate 20 from cracking due to excessive local concave deformation.

[0048] Among them, the height difference H formed by the highest point and the lowest point of the arc-shaped concave surface, and the value range of H is 0.5mm - 5mm. It should be noted that when the value of H is too small, the bending of the glass cover plate 20 is not obvious enough. At this time, when the glass cover plate 20 is convex outward, it is easy to cause the infrared signal to be unable to be transmitted normally. When the value of H is too large, it is easy to cause the glass cover plate 20 to break. Therefore, the above value range of H is an optional solution.

[0049] Adopt the touch frame component of Embodiment 2. The frame body 11 is provided with a processing surface for connecting the glass cover plate 20. The processing surface is an inward concave surface 31. The inward concave surface 31 is recessed inward. The back surface of the glass cover plate 20 is attached to the inward concave surface 31. The glass cover plate 20 and the frame body 11 are fixedly connected through a fixing member, so that the glass cover plate 20 is recessed inward, thereby preventing the glass cover plate 20 from blocking the infrared signal transmission of the PCB component 12 due to outward convexity during use, and further ensuring the normal progress of infrared touch operation. In addition, for the display device adopting the above structure, only the inward concave surface 31 needs to be processed on the frame body 11, and there is no need to select glass for the inward concave control of the glass cover plate 20, reducing the loss of glass and improving the production efficiency. Moreover, the processing cost of the inward concave surface 31 is low and the inward concavity of the glass cover plate 20 is realized, with a simple structure and low cost.

[0050] As Figure 4 and Figure 5 shown, Embodiment 3 of the present invention provides a touch frame component. The difference between Embodiment 3 and Embodiment 1 is that in Embodiment 3, a support pad 32 is provided between the glass cover plate 20 and the frame body 11. The support pad 32 generates a force that causes the glass cover plate 20 to be recessed inward, so that the glass cover plate 20 is recessed inward.

[0051] In this embodiment, the outer surface of the glass cover plate 20 faces the outside of the display device. It should be noted that the PCB component 12 is provided with corresponding infrared emitting tubes and infrared receiving tubes, so that a horizontal and vertical cross-shaped infrared matrix is formed on the screen. When the user touches the screen, the controller judges the specific position of the contact point on the screen, thereby completing the infrared touch operation.

[0052] As Figure 4 and Figure 5 shown, the PCB component 12 is installed in the frame body 11, and the glass cover plate 20 is located inside the PCB component 12, that is, the infrared rays emitted by the infrared emitting tubes are located above the outer surface of the glass cover plate 20, and both ends of the glass cover plate 20 are fixedly connected in the frame body 11. Since both ends of the glass cover plate 20 are fixedly connected to the frame body 11, by arranging the support pad 32 between the frame body 11 and the glass cover plate 20, the glass cover plate 20 will be deformed under the support of the support pad 32, so that the glass cover plate 20 is recessed inward.

[0053] In this embodiment, the fixing structure includes a fixing member 60. Both ends of the fixing member 60 are respectively connected to the inner surfaces of the frame body 11 and the glass cover plate 20. Specifically, both ends of the glass cover plate 20 are fixed to the frame body 11 through glass pressing blocks. The support pad 32 forms a fulcrum, and the support pad 32 is used to squeeze the glass cover plate 20, so that the glass cover plate 20 is recessed inward, thereby preventing the glass cover plate 20 from blocking the infrared signals emitted by the PCB component 12 due to outward convexity during use, as Figure 4As shown in the figure, the arrow in the figure indicates the transmission of the infrared signal. At this time, the glass cover plate 20 is concave, and the signal is transmitted normally, thereby ensuring the normal progress of the infrared touch operation. In addition, the display device adopting the above structure does not need to control the concavity of the glass cover plate 20 by selecting the glass, reduces the loss of the glass, improves the production efficiency, and the support pad 32 realizes the concavity of the glass cover plate 20, with a simple structure and low cost.

[0054] In this embodiment, the outer contour of the glass cover plate 20 is rectangular, and a support pad 32 is arranged at the midpoint of the long side of the glass cover plate 20. If the length of the long side of the glass cover plate 20 is large, it is easy for the glass cover plate 20 to be recessed inward from the middle, and the glass cover plate 20 shows a symmetric bend, which is not easy to cause the glass cover plate 20 to break. It should be noted that the support pad 32 can also be arranged on the short side of the glass cover plate 20, but it will result in a poor bending effect of the glass cover plate 20 and an insufficient concavity of the glass cover plate 20.

[0055] In other embodiments, multiple support pads 32 can be provided and the multiple support pads 32 are arranged at uniform intervals.

[0056] Specifically, the support pad 32 is in a block shape, and the ratio of the length of the support pad 32 to the length of the long side of the glass cover plate 20 is a, where the value range of a is between 1 / 8 and 1 / 12, and the ratio of the thickness of the support pad 32 to the thickness of the glass cover plate 20 is b, where the value range of b is between 1 / 3 and 1 / 4. It should be noted that if the length of the support pad 32 is too small, it is easy for the glass cover plate 20 to be locally squeezed and broken, and if the length of the support pad 32 is too large, the contact with the glass cover plate 20 is not sufficient when squeezing the glass cover plate 20, resulting in an unobvious bending effect of the glass cover plate 20; if the thickness of the support pad 32 is too small, the bending and concavity of the glass cover plate 20 are not obvious, and when the thickness of the support pad 32 is too large, it is easy for the glass cover plate 20 to break. Therefore, the values of a and b within the above value ranges are optional solutions.

[0057] In this embodiment, the support pad 32 is bonded to the frame 11, so that the support pad 32 is stably connected to the frame 11. In other embodiments, the support pad 32 can also be fixed to the frame 11 by other means such as fasteners, but the bonding form is more convenient and firm.

[0058] In this embodiment, the material of the support pad 32 is plastic or foam, so that the glass cover plate 20 is not easily damaged when being squeezed, thereby improving the stability of the structure.

[0059] When installing the glass cover plate 20, first press the glass pressing blocks at both ends of the glass cover plate 20. At this time, the support pad 32 in the middle of the glass cover plate 20 is squeezed, causing the glass cover plate 20 to bend. After that, lock the glass pressing block in the middle of the glass cover plate 20, so that the glass cover plate 20 is concave and fixed on the frame 11.

[0060] Adopting the touch frame assembly of Embodiment 3, both ends of the glass cover plate 20 are fixed to the frame 11. By using the support pad 32 to squeeze the glass cover plate 20, the glass cover plate 20 is made to be concave inward, thus avoiding the infrared signal transmission of the PCB assembly 12 being blocked due to the outward convexity of the glass cover plate 20 during use, and further ensuring the normal progress of infrared touch operation. In addition, the display device adopting the above structure does not need to select glass for concave control of the glass cover plate 20, reducing the loss of glass and improving production efficiency. The support pad 32 realizes the concavity of the glass cover plate 20, with a simple structure and low cost.

[0061] Embodiment 4 of the present invention provides an intelligent interactive tablet, including a backlight module and the touch frame assembly provided above. The backlight module is arranged inside the touch frame assembly.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0065] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used here will be made.

[0066] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0067] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A touch frame assembly, characterized in that, The touch frame assembly includes: An infrared touch frame (10), including a frame body (11) and a PCB assembly (12) disposed within the frame body (11); A glass cover plate (20), the outer contour of the glass cover plate (20) being rectangular, and the glass cover plate (20) being located inside the PCB assembly (12); A fixing structure for fixing the glass cover plate (20) to the infrared touch frame (10), and the glass cover plate (20) is controlled to be recessed inwardly by the curvature of the frame body (11) and / or the fixing structure; A support pad (32) is disposed between the glass cover plate (20) and the frame body (11), the support pad (32) being in a block shape, and the support pad (32) generates a force for making the glass cover plate (20) recessed inwardly, such that the glass cover plate (20) is recessed inwardly; There is one support pad (32), and the support pad (32) is disposed at the midpoint of the long side of the glass cover plate (20); or, There are multiple support pads (32), and the multiple support pads (32) are evenly spaced; The ratio of the length of the support pad (32) to the length of the long side of the glass cover plate (20) is a, where the value range of a is between 1 / 8 and 1 / 12; and / or, The ratio of the thickness of the support pad (32) to the thickness of the glass cover plate (20) is b, where the value range of b is between 1 / 3 and 1 / 4.

2. The touch frame assembly according to claim 1, wherein, The frame body (11) is provided with a concave surface (31) for cooperating with the glass cover plate (20), a part of the surface of the glass cover plate (20) is attached to the concave surface (31), and when the fixing structure fixes the glass cover plate (20) to the infrared touch frame (10), the glass cover plate (20) is kept in a concave state.

3. The touch frame assembly according to claim 2, wherein The concave surface (31) is an arc-shaped concave surface.

4. The touch frame assembly according to claim 3, wherein The arc-shaped concave surface is a symmetric structure, The highest point of the arc-shaped concave surface is correspondingly disposed with the two ends of the glass cover plate (20), and the lowest point of the arc-shaped concave surface is correspondingly disposed with the midpoint of the long side of the glass cover plate (20); or, The highest point of the arc-shaped concave surface is correspondingly disposed with the two ends of the frame body (11), and the lowest point of the arc-shaped concave surface is correspondingly disposed with the midpoint of the long side of the frame body (11).

5. The touch frame assembly according to claim 3, wherein The height difference between the highest point and the lowest point of the arc-shaped concave surface is H, and the value range of H is 0.5 mm - 5 mm.

6. The touch frame assembly according to claim 2, wherein The outer contour of the glass cover plate (20) is rectangular.

7. The touch frame assembly according to claim 6, wherein The long side of the glass cover plate (20) is attached to the concave surface (31).

8. The touch frame assembly according to claim 2, wherein The fixing structure includes a fixing member (60), one end of the fixing member (60) is pressed on the glass cover plate (20), and the other end of the fixing member (60) is fixed on the frame body (11) to keep the glass cover plate (20) fixed to the infrared touch frame (10); or, The fixing structure includes an adhesive, and the glass cover plate (20) is adhesively connected to the concave surface (31) through the adhesive.

9. The touch frame assembly according to any one of claims 2 to 8, wherein the frame body (11) is a curved frame body and is recessed inward to form the concave surface (31), and the thickness of the frame body (11) is kept consistent; or, the thickness of the middle part of the frame body (11) is greater than the thickness of both ends of the frame body (11) to form the concave surface (31).

10. The touch frame assembly according to any one of claims 2 to 8, characterized in that, The frame body (11) is provided with a first step (111) for supporting the glass cover plate (20), a part of the surface of the glass cover plate (20) abuts against the step surface of the first step (111), and the end of the glass cover plate (20) is supported by the first step (111).

11. The touch frame assembly according to any one of claims 1 to 8, characterized in that, The frame body (11) includes a first installation groove (112), and the PCB assembly (12) is arranged in the first installation groove (112).

12. The touch frame assembly according to claim 11, characterized in that, The groove wall of the first installation groove (112) is provided with a clamping groove (1121) and a second step (1122), one end of the PCB assembly (12) is clamped with the clamping groove (1121), and the other end of the PCB assembly (12) is adhesively bonded to the step surface of the second step (1122).

13. The touch frame assembly according to claim 11, wherein, The touch frame assembly further includes a light filter strip (40), and the light filter strip (40) is installed at the notch of the first installation groove (112).

14. The touch frame assembly according to claim 1, characterized in that, The fixing structure includes a fixing member (60), one end of the fixing member (60) is pressed on the glass cover plate (20), and the other end of the fixing member (60) is fixed on the frame body (11) to keep the glass cover plate (20) fixed on the infrared touch frame (10).

15. The touch frame assembly according to claim 1, wherein The support pad (32) is adhesively bonded to the frame body (11).

16. The touch frame assembly according to claim 1, wherein, The material of the support pad (32) is plastic or foam.

17. An intelligent interactive flat panel, comprising a backlight module and the touch frame assembly according to any one of claims 1 - 16.

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