Touch frame assembly and intelligent interaction tablet

Abstract

The invention provides a touch frame assembly and an intelligent interaction tablet, and the touch frame assembly comprises an infrared touch frame which comprises a frame body and a PCB assembly disposed in the frame body; the glass cover plate is located on the inner side of the PCB assembly; and the fixing structure is used for fixing the glass cover plate on the infrared touch frame, and the glass cover plate is controlled to sink inwards through the curvature of the frame body and / or the fixing structure. According to the technical scheme provided by the invention, the problems of high glass loss and high cost caused by controlling the indentation of the glass cover plate by selecting glass in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of touch display devices, and in particular to a touch frame assembly and an intelligent interactive tablet. Background Art

[0002] At present, the infrared sensing height (writing height) of the touch frame component is generally greater than 3.5mm, and some products even have an infrared writing height greater than 4.5mm. When users write, they have a serious sense of suspension, resulting in a poor writing experience. In order to continuously improve the user's writing experience, 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 glass cover.

[0003] Especially for large touchscreens, the deformation of the glass cover is more difficult to control. Existing glass cover mounting structures cannot effectively control the bulging of the glass cover. For display devices with low infrared writing heights, if the glass cover bulges outward, the infrared signal will be blocked, resulting in touch recognition failure. Existing technologies can only achieve concave glass cover by selecting glass, which results in very high glass loss, low production efficiency, and high costs. Summary of the Invention

[0004] The present invention provides a touch frame assembly and an intelligent interactive tablet to solve the problem in the prior art that the concave control of a glass cover plate is performed by selecting glass, resulting in large glass loss and high cost.

[0005] According to one aspect of the present invention, a touch frame assembly is provided, comprising: an infrared touch frame including a frame body and a PCB assembly disposed within the frame body; a glass cover plate positioned inside the PCB assembly; and a fixing structure for fixing the glass cover plate to the infrared touch frame, wherein the glass cover plate is controlled to concave inwardly by the curvature of the frame body and / or the fixing structure.

[0006] According to another aspect of the present invention, a smart interactive tablet is provided, comprising 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 fixed to the frame using the fixing structure, the glass cover plate is controlled to concave inwards by the curvature of the frame and / or the fixing structure. This prevents the glass cover plate from blocking the infrared signal transmission of the PCB assembly due to its convexity during use, thus ensuring normal infrared touch operation. Furthermore, display devices using this structure do not require the selection of glass to control the concavity of the glass cover plate, which can reduce glass loss, improve production efficiency, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0009] Figure 1 shows a cross-sectional view of a touch frame assembly provided according to a first embodiment of the present invention;

[0010] Figure 2 shows another cross-sectional view of a touch frame assembly provided according to the first embodiment of the present invention;

[0011] Figure 3 shows a cross-sectional view of a touch frame assembly provided according to a second embodiment of the present invention;

[0012] Figure 4 shows a cross-sectional view of a touch frame assembly provided according to a third embodiment of the present invention;

[0013] Figure 5 shows another cross-sectional view of a touch frame assembly provided according to the third embodiment of the present invention;

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

[0015] Figure 7 Shown Figure 6 A partial enlarged view of point A in the middle;

[0016] Figure 8 shows an assembly diagram of a touch frame assembly provided according to a first embodiment of the present invention;

[0017] Figure 9 Shown Figure 8 A partial enlarged view of point B in the middle.

[0018] The above drawings include the following reference numerals:

[0019] 10. Infrared touch frame; 11. Frame; 111. First step; 112. First mounting slot; 1121. Card slot; 1122. Second step; 12. PCB assembly; 20. Glass cover; 31. Inner concave surface; 32. Support pad; 40. Filter strip; 60. Fixing part. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1 and Figure 2 As shown, a first embodiment of the present invention provides a touch frame assembly, which 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. Touch operations can be performed by touching the glass cover plate 20. The fixing structure disposed between the frame body 11 and the glass cover plate 20 can fix the glass cover plate 20 to the frame body 11. The curvature of the frame body 11 and the fixing structure can control the inward concavity of the glass cover plate 20.

[0022] Using the touch frame assembly provided in this embodiment, after the glass cover plate 20 is fixed to the frame 11 using the fixing structure, the curvature of the frame 11 and the fixing structure can control the inward concavity of the glass cover plate 20. This prevents the glass cover plate 20 from blocking the infrared signal transmission of the PCB assembly 12 due to its convexity during use, thus ensuring normal infrared touch operation. In addition, display devices using this structure, such as smart interactive tablets, do not need to select glass to control the concavity of the glass cover plate 20, which can reduce glass loss, improve production efficiency, and have a simple structure and low cost.

[0023] In this embodiment, the frame body is formed as the frame of the display device by bending, and it can be processed in various forms, such as rolling forming, so that the frame body 11 forms an inner concave surface and is concave inward, and the thickness of the frame body 11 remains consistent. Figure 2 As shown, the thickness of the frame 11 remains consistent. In this embodiment, the backlight module is located inside the display device, the PCB assembly 12 is installed in the frame 11, and the glass cover 20 is located inside the PCB assembly 12. It should be noted that the PCB assembly 12 is provided in the frame 11, and an infrared transmitting tube and an infrared receiving tube are provided on the PCB assembly 12. The infrared rays emitted by the infrared transmitting tube are received by the infrared receiving tube, forming a horizontal and vertical infrared matrix above the glass cover. When the user touches the screen, the controller determines the specific location of the touch point on the screen, thereby completing the infrared touch operation.

[0024] like Figure 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 curved 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 curved 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 deforms as the frame 11 is concave, achieving the concave shape of the glass cover plate 20. The glass cover plate 20 is then fixed to the frame by the fixing member 60 to maintain the concave shape 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 convex shape during use. Figure 1 As shown, the arrow in the figure represents the transmission of infrared signals. At this time, the glass cover 20 is concave, and the signal is transmitted normally, thereby ensuring the normal operation of the infrared touch operation.

[0025] like Figure 2 As shown, in this embodiment, the frame 11 is provided with a concave surface 31 for connecting to the glass cover plate 20. The concave surface 31 is recessed toward the side facing away from the PCB assembly 12. Part of the surface of the glass cover plate 20 is attached to the concave surface 31. When the fixing structure fixes the glass cover plate 20 to the infrared touch frame, the glass cover plate 20 is kept in a concave state. The integral molding process of the frame 11 allows the glass cover plate 20 mounted thereon to be concave, resulting in a simple structure and low cost.

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

[0028] In this embodiment, the arc-shaped concave surface is a symmetrical structure, and the glass cover plate 20 can be symmetrically concave, making the concave shape of the glass cover plate 20 more stable. Preferably, the highest point of the arc-shaped concave surface is set corresponding to the two ends of the glass cover plate 20, and the lowest point of the arc-shaped concave surface is set corresponding to the midpoint of the long side of the glass cover plate 20. The highest point of the arc-shaped concave surface is set corresponding to the two ends of the frame 11, and the lowest point of the arc-shaped concave surface is set corresponding to the midpoint of the long side of the frame 11. This allows the glass cover plate 20 to be uniformly concave, avoiding the glass cover plate 20 from being broken due to excessive deformation of a local concave shape. In addition, if the long side of the glass cover plate 20 is long, it is easy for the glass cover plate 20 to bend inward from the middle, thereby achieving the concave shape 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 curved 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 curvature of the glass cover plate 20 is not obvious enough, and when the glass cover plate 20 convexes, it is easy to cause the infrared signal to not 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 value of H in the above range is optional.

[0030] In this embodiment, the outer contour of the glass cover plate 20 is a rectangle, and the long side of the glass cover plate 20 is connected to the inner concave surface 31 , so that the glass cover plate 20 is easy to deform.

[0031] In this embodiment, the frame 11 is a rolled curved profile, that is, the frame 11 is rolled to form an inwardly concave arc surface, which is easy to process and low in cost.

[0032] like Figure 1 、 Figure 6 as well as Figure 7 As shown, the frame 11 is provided with a first step 111 for supporting the glass cover plate 20. 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 the fixing structure to prevent the glass cover plate 20 from slipping. The first step 111 also has a positioning function, which facilitates the installation of the glass cover plate 20. Figure 1 There is a gap between the end of the middle glass cover plate 20 and the first step 111 . Since there are machining errors in the various components during the machining process, setting this gap can ensure that the glass cover plate 20 is smoothly installed in the frame 11 .

[0033] Specifically, the concave surface 31 is provided on the step surface of the first step 111 . After the glass cover plate 20 is placed on the first step 111 , the concave shape of the glass cover plate 20 can be achieved while positioning the glass cover plate 20 using the first step 111 .

[0034] like Figure 1 、 Figure 2 、 Figure 8 as well as Figure 9 As shown, in this embodiment, the display device further includes a plurality of fixing members 60, each of which is connected to the frame 11 and the inner surface of the glass cover plate 20, respectively. Thus, the fixing members 60 fix the inner surface of the glass cover plate 20 to the frame, thereby firmly fixing the glass cover plate 20 in the frame 11.

[0035] Specifically, the first end of the fixing member 60 is connected to the frame 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 is pressed on the glass cover 20 to firmly fix the glass cover 20 in the frame 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 11. It should be pointed out that glass pressing blocks can also be set on the short sides of the glass cover plate 20. However, the long sides of the glass cover plate 20 are longer. The glass pressing blocks are set on the long sides to better achieve a stable connection of the glass cover plate 20. When the glass cover plate 20 is installed, the glass pressing blocks are locked by tightening the screws, thereby making the glass cover plate 20 concave and fixed to the frame 11.

[0037] In other embodiments, the glass cover plate 20 may be bonded to the inner concave surface 31 , that is, the glass cover plate 20 is bonded to the frame 11 using double-sided tape or liquid adhesive, thereby achieving a fixed connection between the glass cover plate 20 and the frame 11 .

[0038] In this embodiment, the frame 11 includes a first mounting groove 112 , and the PCB assembly 12 is disposed in the first mounting groove 112 , thereby facilitating installation and protecting the PCB assembly 12 .

[0039] Specifically, the groove wall of the first mounting groove 112 is provided with a card slot 1121 and a second step 1122. One end of the PCB assembly 12 is snapped into the card slot 1121, and the other end of the PCB assembly 12 is bonded to the step surface of the second step 1122, so that the PCB assembly 12 is stably set in the first mounting groove 112, avoiding shaking of the PCB assembly 12 and ensuring the normal operation of the touch operation.

[0040] In addition, the touch frame assembly further includes a filter bar 40 . In order to ensure a stable connection of the filter bar 40 , the filter bar 40 is installed in the notch of the first installation slot 112 .

[0041] Using the touch frame assembly of Example 1, the 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 mounted on the frame 11 so that the glass cover plate 20 is recessed inward. Specifically, when the glass cover plate 20 is fixedly connected to the frame 11, since the frame 11 is fixed by the backlight module of the display device, the glass cover plate 20 deforms as the frame 11 is recessed, achieving the inward concavity 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 convexity during use, thereby ensuring normal infrared touch operation. In addition, the display device using the above structure does not need to select glass to control the inward concavity of the glass cover plate 20, which reduces glass loss and improves production efficiency. The integral molding operation of the frame 11 allows the glass cover plate 20 mounted thereon to be recessed, resulting in a simple structure and low cost.

[0042] like Figure 3 As 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 portion of the frame body 11 is greater than the thickness of the two ends of the frame body 11 to form an inner concave surface 31.

[0043] In this embodiment, the frame 11 is provided with a processed surface for connecting the glass cover plate 20. The processed surface is an inner concave surface 31, which can be obtained by machining. The inner concave surface 31 can be an arc-shaped concave surface or a stepped surface, so that the processed surface can be gradually concave along its two ends toward the middle. The surface of the glass cover plate 20 is attached to the inner concave surface 31. At this time, the glass cover plate 20 is tightly attached to the inner concave surface 31. The glass cover plate 20 is connected and fixed to the frame 11 by a fixing piece, so that the glass cover plate 20 bends inward, thereby causing the glass cover plate 20 to be concave inward, thereby preventing the glass cover plate 20 from blocking the infrared signal emitted by the PCB assembly 12 due to the outward bulge during use.

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

[0045] Using the touch frame assembly provided in this embodiment, the glass cover plate 20 is attached to the inner concave surface 31, causing the glass cover plate 20 to be recessed inward. This prevents the glass cover plate 20 from obstructing infrared signals from the PCB assembly 12 due to its outward protrusion during use, thereby ensuring normal infrared touch operation. Furthermore, a display device employing this structure only requires machining the inner concave surface 31 on the frame 11, eliminating the need to select glass to control the inner concave surface of the glass cover plate 20. This reduces glass loss and improves production efficiency. The inner concave surface 31 is low-cost to manufacture and achieves the inner concave surface of the glass cover plate 20, resulting in a simple and cost-effective structure.

[0046] In this embodiment, the thickness of the middle portion of the frame 11 is greater than the thickness of the ends of the frame 11. That is, the inner concave surface 31 is formed by cutting the ends of the frame 11, making the inner concave surface 31 of the frame easier to process. 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 inner concave surface 31. The long side of the glass cover plate 20 is long, and when the long side of the glass cover plate 20 is connected to the inner concave surface 31, the glass cover plate 20 is easily concave inward from the middle.

[0047] Specifically, the inner concave surface 31 is an arc-shaped concave surface, and the arc-shaped concave surface has a symmetrical structure, so that the glass cover plate 20 can be symmetrically concave, so that the glass cover plate 20 produces a uniform concave deformation, and the highest point of the arc-shaped concave surface is set corresponding to 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 11 or near the two end points of the frame 11, and the lowest point of the arc-shaped concave surface is set corresponding to 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 11 or near the midpoint of the frame 11, further enabling the glass cover plate 20 to be uniformly concave, thereby avoiding the glass cover plate 20 from being broken due to excessive local concave deformation.

[0048] The height difference H formed between the highest point and the lowest point of the curved concave surface is in the range of 0.5 mm to 5 mm. It should be noted that when the above-mentioned H value is too small, the curvature 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 not be transmitted normally. When the H value is too large, it is easy to cause the glass cover plate 20 to break. Therefore, the above-mentioned range of H values is an optional solution.

[0049] In the touch frame assembly of Example 2, the frame 11 is provided with a machined surface for connecting to the glass cover plate 20. This machined surface is an inwardly recessed inner concave surface 31. The back of the glass cover plate 20 is attached to the inwardly recessed inner concave surface 31. The glass cover plate 20 is fixedly connected to the frame 11 by a fixing member, so that the glass cover plate 20 is recessed inward. This prevents the glass cover plate 20 from blocking the infrared signal transmission of the PCB assembly 12 due to its convexity during use, thereby ensuring normal infrared touch operation. In addition, a display device using the above structure only needs to machine the inwardly recessed surface 31 on the frame 11, eliminating the need to select glass to control the inward recess of the glass cover plate 20. This reduces glass loss and improves production efficiency. The inwardly recessed inner concave surface 31 is low-cost to machine and achieves the inward recess of the glass cover plate 20, resulting in a simple structure and low cost.

[0050] like Figure 4 and Figure 5 As shown, a third embodiment of the present invention provides a touch frame assembly. The difference between the third embodiment and the first embodiment is that in the third embodiment, 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 dent inward, causing the glass cover plate 20 to dent inward.

[0051] In this embodiment, the outer surface of the glass cover plate 20 faces the outside of the display device. It should be pointed out that the PCB assembly 12 is provided with a one-to-one corresponding infrared transmitting tube and infrared receiving tube, so that a horizontal and vertical cross infrared matrix is formed on the screen. When the user touches the screen, the controller determines the specific position of the touch point on the screen, thereby completing the infrared touch operation.

[0052] like Figure 4 and Figure 5 As shown, the PCB assembly 12 is installed in the frame 11, and the glass cover plate 20 is located on the inner side of the PCB assembly 12. That is, the infrared rays emitted by the infrared emitting tube are located above the outer surface of the glass cover plate 20. The two ends of the glass cover plate 20 are fixedly connected to the frame 11. Because the two ends of the glass cover plate 20 are fixedly connected to the frame 11, by providing the support pads 32 between the frame 11 and the glass cover plate 20, the glass cover plate 20 will deform under the support of the support pads 32, thereby causing the glass cover plate 20 to be concave inward.

[0053] In this embodiment, the fixing structure includes a fixing member 60, the ends of which are respectively connected to the frame 11 and the inner surface of the glass cover plate 20. Specifically, the ends of the glass cover plate 20 are fixed to the frame 11 by glass pressing blocks, and the support pads 32 form a fulcrum. The support pads 32 are used to squeeze the glass cover plate 20, causing the glass cover plate 20 to be concave inward, thereby preventing the glass cover plate 20 from blocking the infrared signal emitted by the PCB assembly 12 due to its convexity during use. Figure 4As shown, the arrow in the figure indicates infrared signal transmission. At this time, the glass cover plate 20 is concave, and the signal is transmitted normally, thereby ensuring normal infrared touch operation. In addition, the display device using the above structure does not need to select glass to control the concave of the glass cover plate 20, which reduces glass loss and improves production efficiency. The support pad 32 realizes the concave of the glass cover plate 20, which is simple in structure and low in cost.

[0054] In this embodiment, the outer contour of the glass cover plate 20 is rectangular, and a support pad 32 is provided at the midpoint of the long side of the glass cover plate 20. The longer long side of the glass cover plate 20 makes it easier for the glass cover plate 20 to be concave inward from the middle, and the glass cover plate 20 bends symmetrically, which is less likely to cause the glass cover plate 20 to break. It should be noted that the support pad 32 can also be provided on the short side of the glass cover plate 20, but this will result in a less effective bending effect of the glass cover plate 20 and a lesser degree of concavity of the glass cover plate 20.

[0055] In other embodiments, a plurality of support pads 32 may be provided, and the plurality of support pads 32 may be evenly spaced apart.

[0056] Specifically, the support pad 32 is block-shaped, 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, wherein 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, wherein 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 to cause the glass cover plate 20 to be locally squeezed and broken, while if the length of the support pad 32 is too large, the contact with the glass cover plate 20 is insufficient when squeezing the glass cover plate 20, resulting in an inconspicuous bending effect of the glass cover plate 20; if the thickness of the support pad 32 is too small, the bending concave of the glass cover plate 20 is not obvious, while when the thickness of the support pad 32 is too large, it is easy to cause the glass cover plate 20 to break. Therefore, a and b in the above value ranges are optional solutions.

[0057] In this embodiment, the support pad 32 is bonded to the frame 11, thereby ensuring a stable connection between the support pad 32 and the frame 11. In other embodiments, the support pad 32 can also be fixed to the frame 11 using other means such as fasteners, but bonding is more convenient and secure.

[0058] In this embodiment, the support pad 32 is made of 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, the glass pressing blocks at both ends of the glass cover plate 20 are first pressed tightly. At this time, the support pad 32 in the middle of the glass cover plate 20 is squeezed to make the glass cover plate 20 bend. Thereafter, the glass pressing block in the middle of the glass cover plate 20 is locked, thereby making the glass cover plate 20 concave and fixed on the frame 11.

[0060] In the touch frame assembly of Example 3, the glass cover plate 20 is fixed to the frame 11 at both ends. Support pads 32 are used to compress the glass cover plate 20, causing it to concave inward. This prevents the glass cover plate 20 from obstructing infrared signal transmission from the PCB assembly 12 due to its bulging during use, thereby ensuring normal infrared touch operation. Furthermore, a display device employing this structure does not require glass selection to control the concavity of the glass cover plate 20, reducing glass loss and improving production efficiency. The support pads 32 achieve the concavity of the glass cover plate 20, resulting in a simple structure and low cost.

[0061] A fourth embodiment of the present invention provides an intelligent interactive tablet, comprising a backlight module and the above-mentioned touch frame assembly, wherein 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 arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0064] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A touch frame assembly, characterized in that: The touch frame assembly includes: An infrared touch frame (10) comprises a frame body (11) and a PCB assembly (12) arranged in the frame body (11); a glass cover plate (20), the glass cover plate (20) being located inside the PCB assembly (12); A fixing structure for fixing the glass cover plate (20) on the infrared touch frame (10), wherein the glass cover plate (20) is controlled to be concave inwards by the curvature of the frame (11) and / or the fixing structure; The frame (11) is provided with an inner concave surface (31) for matching with the glass cover plate (20), the thickness of the frame (11) is kept consistent, the inner concave surface (31) matches with the glass cover plate (20), a part of the surface of the glass cover plate (20) is attached to the inner concave surface (31), and when the fixing structure fixes the glass cover plate (20) on the infrared touch frame (10), the glass cover plate (20) is kept in a concave state; or, The thickness of the middle portion of the frame (11) is greater than the thickness of the two ends of the frame (11) to form the inner concave surface (31), and the surface of the glass cover plate (20) is attached to the inner concave surface (31), so that the glass cover plate (20) is concave inward.

2. The touch frame assembly according to claim 1, wherein: The inner concave surface (31) is an arc-shaped concave surface.

3. The touch frame assembly according to claim 2, wherein: The arc-shaped concave surface is a symmetrical structure. The highest point of the arc-shaped concave surface is arranged corresponding to the two ends of the glass cover plate (20), and the lowest point of the arc-shaped concave surface is arranged corresponding to the midpoint of the long side of the glass cover plate (20); or, The highest point of the arc-shaped concave surface is arranged corresponding to the two ends of the frame (11), and the lowest point of the arc-shaped concave surface is arranged corresponding to the midpoint of the long side of the frame (11).

4. The touch frame assembly according to claim 2, wherein: The height difference between the highest point of the arc-shaped concave surface and the lowest point of the arc-shaped concave surface is H, and the value range of H is 0.5mm-5mm.

5. The touch frame assembly according to claim 1, wherein: The outer contour of the glass cover plate (20) is rectangular, and the long side of the glass cover plate (20) is attached to the inner concave surface (31).

6. The touch frame assembly according to claim 1, wherein: The fixing structure comprises a fixing member (60), one end of the fixing member (60) is pressed onto the glass cover plate (20), and the other end of the fixing member (60) is fixed to the frame (11), so as to keep the glass cover plate (20) fixed to the infrared touch frame (10); or, The fixing structure comprises an adhesive, and the glass cover plate (20) is adhesively connected to the inner concave surface (31) via the adhesive.

7. The touch frame assembly according to any one of claims 1 to 6, characterized in that: The frame (11) is provided with a first step (111) for supporting the glass cover plate (20); a portion of the surface of the glass cover plate (20) abuts against the step surface of the first step (111), and an end portion of the glass cover plate (20) is supported by the first step (111).

8. The touch frame assembly according to any one of claims 1 to 6, wherein: The frame (11) comprises a first mounting groove (112), and the PCB assembly (12) is arranged in the first mounting groove (112); 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 bonded to the step surface of the second step (1122); and or, The touch frame assembly further comprises a filter bar (40), and the filter bar (40) is installed in the notch of the first installation slot (112).

9. The touch frame assembly according to claim 1, wherein: The fixing structure comprises a fixing member (60), one end of the fixing member (60) is pressed onto the glass cover plate (20), and the other end of the fixing member (60) is fixed to the frame (11), so as to keep the glass cover plate (20) fixed to the infrared touch frame (10).

10. An intelligent interactive tablet comprising a backlight module and the touch frame assembly according to any one of claims 1 to 9.

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