Infrared touch frame assembly and intelligent blackboard

Abstract

The invention relates to the field of display equipment, and discloses an infrared touch frame assembly and an intelligent blackboard, the infrared touch frame assembly comprises a touch frame, a first frame, a light filtering strip, a limiting plate and a corner piece, the first frame is provided with a containing cavity, and the containing cavity penetrates through the two opposite ends of the first frame to enable the two opposite ends of the first frame to form openings; a positioning hole is formed in the side wall of the first frame, and the touch frame is contained in the containing cavity. The light filtering strip is arranged in the containing cavity, the touch frame is connected to the light filtering strip, the limiting plate is arranged on the first frame and seals the opening, the limiting plate abuts against the first frame, the limiting plate comprises a first protruding part, a protruding block is arranged on the first protruding part, and the first protruding part extends into the containing cavity, so that the protruding block is matched with the positioning hole to form clamping positioning. The corner piece is connected with the first frame and the limiting plate. And the limiting plate is not easy to displace. When the limiting plate is installed on the corner piece through the screw, the limiting plate is not prone to rotating, and therefore it is avoided that a gap is formed between the limiting plate and the first frame and is out of tolerance.

Description

Technical Field

[0001] The present invention relates to the field of display devices, and in particular to an infrared touch frame component and a smart blackboard. Background Art

[0002] At present, infrared technology touch screens are one of the conventional choices for multimedia devices. They generally include infrared emitting elements and infrared sensing elements installed on the touch screen frame, thereby forming an infrared detection network on the display module. Any touching object can change the infrared on the contact point to realize touch screen operation.

[0003] Generally, the corner structure of the touch frame includes two adjacent frames, a filter strip, a touch frame, a stopper and a corner piece. The bottom of the touch frame is stuck in the groove on the frame, and the top of the touch frame is stuck in the groove inside the frame. Then the filter strip is stuck into the frame and one side of the touch frame, and the filter strip is stuck to the glass panel in the display module; the stopper is set at the openings on both sides of the frame to limit the touch frame to prevent the two sides of the touch frame from falling off, and finally the corner piece is connected to the two adjacent frames.

[0004] However, when the corner piece connects the two frames, the limiting piece needs to be fixed by screws. During the screw fixing process, the limiting piece is prone to deflection when it is not positioned, resulting in a gap error. Summary of the invention

[0005] The embodiments of the present invention aim to provide an infrared touch frame assembly and a smart blackboard to solve the technical problem in the prior art that the limiting member is prone to rotation during the installation process, thereby causing a gap error between the limiting member and the frame.

[0006] An embodiment of the present invention provides an infrared touch frame assembly, including a touch frame; a first frame, wherein a receiving cavity is provided in the first frame, the receiving cavity passes through two opposite ends of the first frame so that the two opposite ends of the first frame form an opening, and a positioning hole is provided on the side wall of the first frame, and the touch frame is accommodated in the receiving cavity; a filter strip, the filter strip is arranged in the receiving cavity, and the touch frame is connected to the filter strip; a limiting plate, the limiting plate is arranged on the first frame and closes the opening, and the limiting plate abuts against the first frame; the limiting plate includes a first protruding portion, a protrusion is provided on the first protruding portion, the first protruding portion extends into the receiving cavity, and the protrusion cooperates with the positioning hole to be clamped and positioned; a corner piece, the corner piece is connected to the first frame and the limiting plate.

[0007] Optionally, the first frame is formed by sheet metal stamping, and the first frame is configured as a U-shaped structure.

[0008] Optionally, the filter bar is bent to form a receiving cavity, the touch frame is received in the receiving cavity, and the outer wall of the filter bar after being bent forms a supporting groove for mounting a glass panel.

[0009] Optionally, the filter strip includes an infrared component mounting portion and a supporting portion, the infrared component mounting portion is connected to the supporting portion, and the infrared component mounting portion and the supporting portion are respectively arranged on opposite sides of the touch frame; the infrared component mounting portion and the supporting portion enclose the receiving cavity, and the supporting portion is bent away from the side wall of the receiving cavity to form the supporting groove.

[0010] Optionally, the first frame includes a first side wall, the first side wall is provided with a notch, the notch is connected to the opening, and the corner piece is arranged on the first side wall; the limiting plate is partially received in the notch, and the limiting plate abuts against an inner wall of the notch.

[0011] Optionally, the supporting portion is bent to form a limiting cavity, and the limiting cavity is connected to the receiving cavity; the limiting plate includes a second protrusion, the first protrusion and the second protrusion are respectively located on opposite sides of the limiting plate, the first protrusion extends along the length direction of the first frame, and the second protrusion extends in a direction away from the positioning hole, the second protrusion is received in the limiting cavity, and the second protrusion abuts against the inner wall of the limiting cavity.

[0012] Optionally, the corner piece is provided with a first locking hole, which extends along the length direction of the first frame; the limiting plate is provided with a first mounting hole, and the first mounting hole and the first locking hole are coaxially arranged; the infrared touch frame assembly includes a first screw, which is passed through the first mounting hole and the first locking hole to fix the corner piece to the limiting plate.

[0013] Optionally, the first frame also includes a second side wall and a third side wall, the second side wall is connected between the first side wall and the third side wall, and the second side wall has the positioning hole; the filter strip also includes a bottom plate and a load-bearing part, the bottom plate includes a supporting surface, the load-bearing part, the infrared component mounting part and the supporting part are all arranged on the supporting surface, a gap is formed between the load-bearing part and the first side wall, the positioning hole is connected to the gap, the first protrusion is inserted into the gap, and the load-bearing part abuts against the second side wall; the bottom plate abuts against the third side wall, and the limiting plate abuts against the supporting surface.

[0014] Optionally, the filter strip includes a first positioning rib and a second positioning rib, the first positioning rib is arranged on the infrared component mounting portion, the second positioning rib is arranged on the supporting surface, and the first positioning rib and the second positioning rib are arranged opposite to each other; the touch frame is clamped to the first positioning rib and the second positioning rib.

[0015] Optionally, the infrared touch frame assembly further includes a second frame, the second frame is fixedly connected to the corner piece, and an outer side wall of the limiting plate facing away from the first frame is flush with the second frame.

[0016] Optionally, the infrared touch frame assembly also includes a second frame, the second frame is provided with a fixing cavity, the fixing cavity extends along the length direction of the second frame, the corner piece includes a fixing portion, the fixing portion is passed through the fixing cavity, and the fixing portion is fixedly connected to the second frame.

[0017] Another embodiment of the present invention provides a smart blackboard, including a display module, a back panel for fixing the display module, infrared components and the above-mentioned infrared touch frame assembly, the display module includes a glass panel, the glass panel is arranged on the filter strip, the back panel is connected to the infrared touch frame assembly, the infrared components are arranged on the filter strip, and in each of the first frames, the infrared components and the glass panel are respectively located on opposite sides of the touch frame.

[0018] Optionally, the first frame also includes a positioning plate, which is connected to the side wall of the first frame, the positioning plate is extended in a direction away from the glass panel, and the positioning plate is arranged along the length direction of the first frame, and the inner wall of the back plate is against the side wall of another group of the first frames facing away from the positioning plate.

[0019] Optionally, the first frame has a wire outlet; the infrared touch frame assembly also includes a wire outlet cover, which is arranged on the first frame and at least partially covers the wire outlet; the wire outlet cover is provided with a limiting opening on the side away from the positioning hole, and the corner piece includes a limiting portion, which is accommodated in the limiting opening to be clamped on the wire outlet cover; the limiting portion has a first limiting groove, and the back panel is accommodated in the first limiting groove.

[0020] Compared with the prior art, in the embodiment of the present invention, during the process of installing the limit plate, the first protrusion of the limit plate is first extended into the accommodating cavity so that the protrusion on the first protrusion is positioned with the positioning hole, thereby limiting the limit plate. When the corner piece is installed on the limit plate, the limit plate is not easy to rotate, thereby reducing the gap deviation formed between the limit plate and the first frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or several embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0022] Figure 1 is a schematic diagram of the structure of an infrared touch frame assembly provided in an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A partially exploded schematic diagram of the middle touch frame, the first frame, the filter strip, the corner piece and the limit plate;

[0024] Figure 3 yes Figure 2 Schematic diagram of the assembly of the middle touch frame, the first frame, the filter strip, the corner piece and the limit plate;

[0025] Figure 4 yes Figure 2 A schematic diagram of the structure of the first frame in FIG.

[0026] Figure 5 yes Figure 2 Schematic diagram of the structure of the filter strip;

[0027] Figure 6 yes Figure 2 Structural schematic diagram of the middle limit plate;

[0028] Figure 7 yes Figure 1 A schematic diagram of the assembly of the second frame and the first frame;

[0029] Figure 8 It is a structural schematic diagram of the smart blackboard provided in an embodiment of the present invention.

[0030] The reference numerals are as follows:

[0031] 100, infrared touch frame assembly; 10, touch frame; 20, first frame; 21, accommodating cavity; 22, opening; 23, positioning hole; 24, first side wall; 241, notch; 25, second side wall; 26, third side wall; 27, positioning plate; 28, outlet; 30, filter strip; 31, accommodating cavity; 32, supporting groove; 33, infrared component installation part; 34, supporting part; 341, limiting cavity; 35, bottom plate; 351, supporting surface; 36, load-bearing part; 37, gap; 38, first positioning rib; 39, second positioning rib; 40, limiting plate; 4 1. First protruding portion; 411. Bump; 42. Base plate portion; 43. Locking portion; 44. Second protruding portion; 45. First mounting hole; 50. Corner piece; 51. Corner portion; 511. First locking hole; 52. Fixing portion; 53. Limiting portion; 531. First limiting groove; 532. Second locking hole; 533. Third locking hole; 60. Glass panel; 70. Second frame; 71. Fixing cavity; 72. Second limiting groove; 73. First bending portion; 74. Second bending portion; 200. Smart blackboard; 80. Back panel; 81. Protective cavity; 90. Wire outlet cover. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention is described in more detail in the following in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] Please also read Figures 1 to 3 , Figure 1 is a schematic diagram of the structure of an infrared touch frame assembly provided in an embodiment of the present invention, Figure 2 yes Figure 1 Schematic diagram of the assembly of the middle touch frame, the first frame, the filter strip, the corner piece and the limit plate. Figure 3 yes Figure 2Assembly diagram of the middle touch frame, first frame, filter strip, corner piece and limit plate. An infrared touch frame assembly 100 provided by one embodiment of the present invention includes a touch frame 10, a first frame 20, a filter strip 30, a limiting plate 40 and a corner piece 50. A receiving cavity 21 is provided in the first frame 20. The receiving cavity 21 passes through two opposite ends of the first frame 20 so that the two opposite ends of the first frame 20 form an opening 22. A positioning hole 23 is provided on the side wall of the first frame 20. The touch frame 10 is accommodated in the receiving cavity 21. The filter strip 30 is arranged in the receiving cavity 21. The touch frame 10 is connected to the filter strip 30. The limiting plate 40 is arranged on the first frame 20 and closes the opening 22. The limiting plate 40 is against the first frame 20. The limiting plate 40 includes a first protrusion 41. A protrusion 411 is provided on the first protrusion 41. The first protrusion 41 extends into the receiving cavity 21. The protrusion 411 cooperates with the positioning hole 23 for clamping and positioning. The corner piece 50 is connected to the first frame 20 and the limiting plate 40.

[0035] Specifically, the infrared touch frame assembly 100 described above can be used to support a display module.

[0036] The purpose of such arrangement is that when the limiting plate 40 is installed, the limiting plate 40 is moved in the direction from the opening 22 to the accommodating cavity 21 until the limiting plate 40 is located at the opening 22, so that the limiting plate 40 closes the opening 22. Moreover, the first protrusion 41 gradually extends into the accommodating cavity 21 until the protrusion 411 cooperates with the positioning hole 23, thereby limiting the limiting plate 40. At this time, the limiting plate 40 is not easy to move. When the corner piece 50 is installed on the limiting plate 40 by screws, since the limiting plate 40 is not easy to rotate, the gap between the limiting plate 40 and the first frame 20 can be reduced.

[0037] The touch frame 10 is an infrared touch frame, that is, a touch control device using the principle of infrared touch sensing technology. Specifically, infrared components (not shown) are used to emit infrared rays to the touch frame 10 and form an infrared detection network on the display module.

[0038] There are two groups of infrared touch frame components 100 , which are respectively arranged on both sides of the display module, and the two groups of infrared touch frame components 100 jointly support the display module.

[0039] Infrared components (not shown in the figure) on one group of infrared touch frame components 100 can emit corresponding infrared signals, and infrared components (not shown in the figure) on another group of infrared touch frame components 100 can receive corresponding infrared signals, thereby forming an infrared detection network on the display module. When an obstruction passes through the infrared detection network, infrared components (not shown in the figure) on the other group of infrared touch frame components 100 cannot receive the corresponding infrared signal, thereby forming a touch signal.

[0040] The filter bar 30 is disposed in the accommodating cavity 21 , and the filter bar 30 is formed by multiple bending processes.

[0041] The touch frame 10 is connected to the filter bar 30 .

[0042] The limiting plates 40 are provided in two groups, and the two limiting plates 40 are respectively provided at the two openings 22 at the opposite ends of the first frame 20, and the limiting plates 40 are closed at the openings 22. The limiting plates 40 also include a base plate portion 42 (see Figure 6 ), the size of the substrate portion 42 is matched with the size of the opening 22, the first protrusion 41 is connected to the substrate portion 42, and the first protrusion 41 extends along the length direction of the first frame 20, so that when the substrate portion 42 is installed at the opening 22, the first protrusion 41 extends into the accommodating cavity 21, and a protrusion 411 is provided on the first protrusion 41, and the protrusion 411 is matched with the positioning hole 23, so that the limiting plate 40 is limited.

[0043] In some embodiments, a positioning column 420 is provided on the substrate portion 42 , and the positioning column 420 extends along the length direction of the first frame 20 . When the substrate portion 42 is installed at the opening 22 , the positioning column 420 abuts against the touch frame 10 , thereby further limiting the touch frame 10 .

[0044] In other embodiments, the protrusion 411 on the first protrusion 41 and the positioning hole 23 can adopt different shapes, for example, the positioning hole 23 can be set to be a triangle, a semicircle or a square; the shape of the protrusion 411 on the first protrusion 41 is adapted to the shape of the positioning hole 23.

[0045] See also Figure 4 , Figure 4 yes Figure 2 In one embodiment, the first frame 20 is formed by sheet metal stamping, and the first frame 20 is set to a U-shaped structure.

[0046] The purpose of such a configuration is to reduce the cost during the production of the first frame 20 and facilitate surface treatment on the outer wall of the first frame 20 .

[0047] In other embodiments, the first frame 20 may be formed by bending an aluminum alloy material multiple times.

[0048] See also Figure 3 and Figure 5 , Figure 5 yes Figure 2 In one embodiment, the filter bar 30 is bent to form a receiving cavity 31 , and the touch frame 10 is received in the receiving cavity 31 . The outer wall of the filter bar 30 after being bent forms a supporting groove 32 for mounting the glass panel 60 .

[0049] Specifically, the display module includes a glass panel 60, which is usually made of a high-strength material, for example, it is made of a sodium silicate glass material or an aluminosilicate glass material to improve the structural stability and pressure resistance of the glass panel 60. The glass panel 60 is located on one side surface of the display module to protect the display module from damage. The filter bar 30 is bent multiple times to form a receiving cavity 31, and the touch frame 10 is installed in the receiving cavity 31, and the outer wall of the filter bar 30 forms a supporting groove 32 for installing the glass panel 60, so that part of the filter bar 30 is located on one side of the touch frame 10, and the other part of the filter bar 30 and the glass panel 60 are both located on the other side of the touch frame 10. Therefore, the filter bar 30 can not only support infrared components (not shown in the figure), but also filter the infrared rays emitted by the infrared components.

[0050] In other embodiments, the filter bar 30 may be formed by splicing a plurality of filter bars.

[0051] In one embodiment, the filter strip 30 includes an infrared component mounting portion 33 and a supporting portion 34, the infrared component mounting portion 33 is connected to the supporting portion 34, and the infrared component mounting portion 33 and the supporting portion 34 are respectively arranged on opposite sides of the touch frame 10; the infrared component mounting portion 33 and the supporting portion 34 enclose the receiving cavity 31, and the supporting portion 34 is bent away from the side wall of the receiving cavity 31 to form a supporting groove 32.

[0052] Specifically, the infrared component mounting portion 33 has a mounting cavity, and the infrared component (not shown) is mounted on the mounting cavity. The infrared component mounting portion 33 and the supporting portion 34 can be integrally injection molded, thereby reducing the number of steps in the production process and reducing the production cost of the filter strip 30.

[0053] The supporting portion 34 of the filter strip 30 is bent multiple times to form a supporting groove 32, so that the supporting groove 32 supports the glass panel 60, and the supporting portion 34 selects the required radiation band for the signal of the infrared component (not shown in the figure) and projects it to the display module.

[0054] In other embodiments, the infrared component mounting portion 33 and the supporting portion 34 may also be formed by snapping together the same material, thereby reducing the purchase of multiple materials and the process of material synthesis, thereby reducing the production cost of the filter strip 30 .

[0055] Please also read Figure 3 , Figure 4 and Figure 6 , Figure 6 yes Figure 2Schematic diagram of the structure of the middle limit plate. In one embodiment, the first frame 20 includes a first side wall 24, the first side wall 24 is provided with a notch 241, the notch 241 is connected to the opening 22, and the corner piece 50 is arranged on the first side wall 24; the limit plate 40 is partially received in the notch 241, and the limit plate 40 abuts against the inner wall of the notch 241.

[0056] Specifically, the first side wall 24 is arranged parallel to the glass panel 60, and the first side wall 24 is located between the corner piece 50 and the glass panel 60; the notch 241 is arranged at the end position of the first side wall 24. The limiting plate 40 also includes a locking portion 43, the locking portion 43 is connected to the base plate portion 42, the locking portion 43 is arranged above the base plate portion 42, and the locking portion 43 and the base plate portion 42 are arranged vertically relative to the glass panel 60. The locking portion 43 is received in the notch 241, so that the locking portion 43 abuts against the inner wall of the notch 241, and then the locking portion 43 is limited by the inner wall of the notch 241. Moreover, the locking portion 43 is connected to the corner piece 50.

[0057] Therefore, when the limit plate 40 is installed on the corner piece 50 by screws, the limit plate 40 will tend to rotate, but through the limitation of the locking portion 43 and the inner wall of the notch 241, and the limitation of the protrusion 411 and the positioning hole 23, the limit plate 40 is not easy to rotate, and thus it is not easy to form a gap error between the limit plate 40 and the first frame 20.

[0058] See also Figure 3 , Figure 5 and Figure 6 In one embodiment, the supporting portion 34 is bent to form a limiting cavity 341, and the limiting cavity 341 is connected to the receiving cavity 31; the limiting plate 40 includes a second protrusion 44, and the first protrusion 41 and the second protrusion 44 are respectively located on opposite sides of the limiting plate 40, the first protrusion 41 extends along the length direction of the first frame 20, and the second protrusion 44 extends in a direction away from the positioning hole 23, the second protrusion 44 is received in the limiting cavity 341, and the second protrusion 44 is against the inner wall of the limiting cavity 341.

[0059] Specifically, the supporting portion 34 is bent away from the bottom of the glass panel 60 to form a limiting cavity 341. The second protrusion 44 is connected to the substrate portion 42. The second protrusion 44 and the substrate portion 42 are manufactured integrally, and when the limiting plate 40 is placed at the opening 22, the length direction of the second protrusion 44 extends in a direction away from the positioning hole 23. When the limiting plate 40 is located at the opening 22, the second protrusion 44 abuts against the inner wall of the limiting cavity 341, so that the side wall of the limiting cavity 341 limits the second protrusion 44. The limiting plate 40 tends to rotate during the screw installation process, but the limiting plate 40 is further limited by the side wall of the limiting cavity 341, thereby preventing the limiting plate 40 from rotating. In addition, the gap between the limiting plate 40 and the first frame 20 is reduced.

[0060] In other embodiments, the first protrusion 41 and the second protrusion 44 may be located on the same side of the substrate portion 42 , and the second protrusion 44 may be limited to a side of the filter bar 30 away from the supporting portion 34 .

[0061] See also Figure 2 and Figure 6 In one embodiment, the corner piece 50 is provided with a first locking hole 511, which extends along the length direction of the first frame 20, and the limiting plate 40 is provided with a first mounting hole 45, which is coaxially arranged with the first locking hole 511; the infrared touch frame assembly 100 includes a first screw, which is passed through the first mounting hole 45 and the first locking hole 511 to fix the corner piece 50 to the limiting plate 40.

[0062] Specifically, the corner piece 50 includes a corner portion 51 (see Figure 7 ), the corner portion 51 is arranged on the first side wall 24, the corner portion 51 is connected to the first side wall 24 by screws, and the end of the corner portion 51 close to the limiting plate 40 is flush with the end of the first side wall 24, and the first locking hole 511 is opened on one side of the corner portion 51. Therefore, when the locking portion 43 is installed on the corner portion 51, the locking portion 43 is against the side wall of the corner portion 51.

[0063] Since the first locking hole 511 extends along the length direction of the first frame 20, the first locking hole 511 and the first mounting hole 45 are coaxially arranged, and the first mounting hole 45 is arranged on the locking portion 43. Therefore, during the process of screwing the limiting plate 40, the limiting plate 40 will have a tendency to rotate along the axis of the first locking hole 511, but due to the limitation caused by the locking portion 43 abutting against the side wall of the notch 241 and the limitation caused by the second protrusion 44 abutting against the side wall of the limiting cavity 341, the limiting plate 40 is difficult to rotate, and thus it is not easy to form a gap error between the limiting plate 40 and the first frame 20.

[0064] In other embodiments, the first locking hole 511 is arranged along a direction close to the glass panel 60, and the locking portion 43 is placed parallel to the glass panel 60. The locking portion 43 will rotate in a plane parallel to the glass panel 60 during the locking process. At this time, the second protrusion 44 will be limited by the inner wall of the limiting cavity 341, thereby reducing the rotation of the limiting plate 40, and further reducing the gap deviation between the limiting plate 40 and the first frame 20.

[0065] See also Figure 2 , Figure 4 and Figure 5 In one embodiment, the first frame 20 further includes a second side wall 25 and a third side wall 26, the second side wall 25 is connected between the first side wall 24 and the third side wall 26, and the second side wall 25 has a positioning hole 23;

[0066] The filter strip 30 also includes a bottom plate 35 and a load-bearing portion 36. The bottom plate 35 includes a supporting surface 351. The load-bearing portion 36, the infrared component mounting portion 33 and the supporting portion 34 are all arranged on the supporting surface 351. A gap 37 is formed between the load-bearing portion 36 and the first side wall 24. The positioning hole 23 is connected to the gap 37. The first protrusion 41 is inserted into the gap 37. The load-bearing portion 36 abuts against the second side wall 25; the bottom plate 35 abuts against the third side wall 26, and the limiting plate 40 abuts against the supporting surface 351.

[0067] Specifically, the first side wall 24 and the third side wall 26 are respectively connected to both sides of the second side wall 25 , the first side wall 24 , the second side wall 25 and the third side wall 26 are integrally manufactured, the first side wall 24 is connected to the corner piece 50 , and the third side wall 26 is located below the first side wall 24 .

[0068] The filter strip 30 includes a bottom plate 35 , a load-bearing portion 36 , an infrared component mounting portion 33 and a supporting portion 34 , wherein the bottom plate 35 , the load-bearing portion 36 , the infrared component mounting portion 33 and the supporting portion 34 are integrally manufactured by injection molding, thereby reducing the manufacturing cost of the filter strip 30 .

[0069] Moreover, the supporting portion 34 is formed by four bends, and the infrared component mounting portion 33 is formed by one bend. The height of the supporting portion 34 is substantially consistent with the height of the infrared component, and the width is substantially consistent, so the weight of the supporting portion 34 is greater than the weight of the infrared component mounting portion 33. Therefore, the center of gravity of the filter strip 30 is close to one side of the supporting portion 34.

[0070] The load-bearing portion 36 is disposed on the side of the infrared component mounting portion 33 away from the supporting portion 34, so that the center of gravity of the entire filter bar 30 is away from the supporting portion 34. Therefore, the load-bearing portion 36 has the function of balancing the center of gravity of the filter bar 30, thereby preventing the filter bar 30 from tilting due to the center of gravity being close to the supporting portion 34.

[0071] Moreover, the bottom plate 35 abuts against the third side wall 26 , the side of the bearing portion 36 away from the infrared component mounting portion 33 abuts against the second side wall 25 , and the upper end of the infrared component mounting portion 33 abuts against the first side wall 24 .

[0072] When the glass panel 60 is connected to the supporting portion 34, the weight of the glass panel 60 will drive the filter strip 30 to have a tendency to rotate toward the glass panel 60, and the filter strip 30 is limited by the bottom plate 35 against the third side wall 26, and the filter strip 30 is limited by the load-bearing portion 36 against the second side wall 25, and the filter strip 30 is limited by the infrared component mounting portion 33 against the first side wall 24, thereby maintaining the position of the filter strip 30 stable, and further maintaining the position of the glass panel 60 stable.

[0073] In addition, the gap 37 formed between the load-bearing portion 36 and the first side wall 24 can facilitate the first protrusion 41 to extend therein, thereby preventing the first protrusion 41 from colliding and abrading with the filter strip 30 during the extension process.

[0074] The limiting plate 40 abuts against the supporting surface 351 , so that when the limiting plate 40 is installed on the first frame 20 along the length direction of the first frame 20 , the supporting surface 351 plays a positioning role, which facilitates the installation of the limiting plate 40 .

[0075] In other embodiments, the load-bearing portion 36 may be configured as a load-bearing block so that the center of gravity of the filter bar 30 is close to one side of the load-bearing portion 36 .

[0076] See also Figure 5 In one embodiment, the filter strip 30 includes a first positioning rib 38 and a second positioning rib 39, the first positioning rib 38 is arranged on the infrared component mounting portion 33, the second positioning rib 39 is arranged on the supporting surface 351, and the first positioning rib 38 and the second positioning rib 39 are arranged opposite to each other; the touch frame 10 is clamped on the first positioning rib 38 and the second positioning rib 39.

[0077] Specifically, part of the infrared component mounting portion 33 is relatively perpendicular to the bottom plate 35, and another part of the infrared component mounting portion 33 is parallel to the bottom plate 35, and the first positioning rib 38 is provided at the portion of the infrared component mounting portion 33 parallel to the bottom plate 35. The first positioning rib 38 is provided protruding from the infrared component mounting portion 33, and the second positioning rib 39 is provided protruding from the bottom plate 35. The first positioning rib 38 and the second positioning rib 39 are both manufactured integrally with the filter strip 30, thereby reducing the process cost of splicing.

[0078] The first positioning rib 38 and the second positioning rib 39 are arranged opposite to each other, so that the upper and lower sides of the touch frame 10 are limited by the first positioning rib 38 and the second positioning rib 39 , thereby reducing the displacement of the touch frame 10 due to shaking.

[0079] In other embodiments, the first positioning rib 38 and the second positioning rib 39 may be formed in the form of positioning grooves or positioning blocks.

[0080] See also Figure 3 and Figure 7 , Figure 7 yes Figure 1 In one embodiment, the infrared touch frame assembly 100 further includes a second frame 70 , which is fixedly connected to the corner piece 50 , and the outer side wall of the limiting plate 40 facing away from the first frame 20 is flush with the second frame 70 .

[0081] Specifically, the limiting plate 40 is installed on the supporting surface 351 along the length direction of the first frame 20, so that the limiting plate 40 facing away from the outer side of the first frame 20 is flush with the outer wall of the second frame 70 facing away from the glass panel 60, so that the side wall of the infrared touch frame assembly 100 is smoother.

[0082] In one embodiment, the second frame 70 is provided with a fixing cavity 71 extending along the length direction of the second frame 70 , and the corner piece 50 includes a fixing portion 52 , which is passed through the fixing cavity 71 and fixedly connected to the second frame 70 .

[0083] Specifically, the second frame 70 is bent several times to form a fixed cavity 71, and the fixed cavity 71 runs through the second frame 70; the fixed portion 52 is connected to the corner portion 51, and the fixed portion 52 extends in a direction away from the corner portion 51, and the fixed portion 52 and the corner portion 51 are manufactured as one piece. The fixed portion 52 is arranged in the fixed cavity 71, and the fixed portion 52 is connected to the second frame 70 and supports the second frame 70. The purpose of such arrangement is that since the corner portion 51 is arranged above the first frame 20, the corner portion 51 may cause the fixed portion 52 to tilt in a direction away from the second frame 70 during installation, thereby causing the fixed portion 52 and the second frame 70 to be inaccurately positioned. By the fixed portion 52 being arranged in the fixed cavity 71, the fixed portion 52 is limited by the fixed cavity 71 during the tilting process, thereby facilitating the positioning connection between the fixed portion 52 and the second frame 70.

[0084] See also Figure 8 , Figure 8 It is a structural schematic diagram of the smart blackboard provided in an embodiment of the present invention.

[0085] Another embodiment of the present invention provides a smart blackboard 200, including a display module, a back panel 80 for fixing the display module, infrared components and an infrared touch frame assembly 100 provided in any of the above embodiments, the display module includes a glass panel, the glass panel 60 is arranged on a filter strip, the back panel is connected to the infrared touch frame assembly, the infrared components are arranged on the filter strip, and in each first frame, the infrared components and the glass panel are respectively located on opposite sides of the touch frame.

[0086] Specifically, the display module includes a glass panel 60 , which is roughly a rectangular panel. Two groups of first frames 20 are respectively connected to the longer sides of the glass panel 60 , and two groups of second frames 70 are respectively connected to the shorter sides of the glass panel 60 .

[0087] The display module further includes a light source, a reflective sheet, a light guide plate, an optical film, etc., and the display module is installed on the back plate 80 .

[0088] Moreover, the smart blackboard 200 includes the infrared touch frame assembly 100 in the above embodiment. Therefore, the smart blackboard 200 also has the technical effect of reducing the gap deviation between the limiting plate 40 and the first frame 20, which will not be elaborated here.

[0089] See also Figure 4 , Figure 7 and Figure 8 In one embodiment, the first frame 20 also includes a positioning plate 27, which is connected to the side wall of the first frame 20, and the positioning plate 27 extends in a direction away from the glass panel 60. The positioning plate 27 is arranged along the length direction of the first frame 20, and the inner wall of the back panel 80 is against the side wall of the other group of first frames 20 facing away from the positioning plate 27.

[0090] Specifically, the positioning plate 27 is integrally manufactured with the first frame 20. When the back plate 80 is buckled into the first frame 20, the inner wall of the back plate 80 abuts against the side wall of the positioning plate 27 facing away from the other set of first frames 20, thereby closing the protective cavity 81 between the back plate 80 and the infrared touch frame assembly 100, making it difficult for external dust to enter the protective cavity 81 through the gap between the back plate 80 and the first frame 20.

[0091] In other embodiments, the positioning plate 27 may be welded to the first frame 20 , or the positioning plate 27 may be snap-connected to the first frame 20 .

[0092] In one embodiment, the first frame 20 has a wire outlet 28; the infrared touch frame assembly 100 also includes a wire outlet cover 90, which is arranged on the first frame 20, and the wire outlet cover 90 at least partially covers the wire outlet 28; the wire outlet cover 90 is provided with a limiting opening on the side away from the positioning hole 23, and the corner piece 50 includes a limiting portion 53, which is accommodated in the limiting opening to be clamped on the wire outlet cover 90; the limiting portion 53 has a first limiting groove 531, and the back panel 80 is accommodated in the first limiting groove 531.

[0093] Specifically, the wire outlet 28 is provided on the first side wall 24, and is used for the line of the infrared component (not shown in the figure) to pass through. The wire outlet cover plate 90 is arranged above the wire outlet 28, and the wire outlet cover plate 90 at least partially covers the wire outlet 28, and the side of the wire outlet cover plate 90 close to the limit plate 40 abuts against the corner portion 51, and the wire outlet cover plate 90 is screwed to the first side wall 24.

[0094] Moreover, the limiting portion 53 is connected to the corner portion 51 , and the limiting portion 53 is located between the corner portion 51 and the fixing portion 52 , and the limiting portion 53 is received in the limiting opening.

[0095] The limiting portion 53 can limit the outlet cover plate 90 to reduce the outlet cover plate 90 from moving toward the glass panel 60. The corner portion 51 can limit the outlet cover plate 90 to reduce the outlet cover plate 90 from moving toward the limiting plate 40.

[0096] In addition, during the screw installation process, the wire outlet cover plate 90 may rotate. The wire outlet cover plate 90 is limited by the corner portion 51 and the limiting portion 53, making it difficult for the wire outlet cover plate 90 to rotate, thereby avoiding the wire outlet cover plate 90 from being offset due to rotation during the screw installation process.

[0097] In addition, a first limiting groove 531 is provided on the corner piece 50, and a second limiting groove 72 is provided on the second frame 70, wherein the first limiting groove 531 is provided on the limiting portion 53 of the corner piece 50; the second frame 70 includes a first bending portion 73 and a second bending portion 74, and the second frame 70 is formed by multiple bendings, and the first bending portion 73 and the second bending portion 74 both protrude in a direction away from the glass panel 60, and a second limiting groove 72 is formed between the first bending portion 73 and the second bending portion 74, and the first bending portion 73 is closer to the glass panel 60 relative to the second bending portion 74.

[0098] The back plate 80 is positioned by the first limiting groove 531 and the second limiting groove 72 and then buckled with the infrared touch frame assembly 100, thereby facilitating the installation of the back plate 80. Moreover, after the back plate 80 is buckled with the infrared touch frame assembly 100, a protective cavity 81 is formed between the back plate 80 and the infrared touch frame assembly 100, and the protective cavity 81 protects the display module from external dust interference.

[0099] In other embodiments, a side of the outlet cover plate 90 close to the limiting portion 53 may be protruded from the first frame 20 , and the limiting portion 53 may be provided with a limiting groove corresponding thereto.

[0100] In one embodiment, the limiting portion 53 is provided with a second locking hole 532 and a third locking hole 533, the back plate 80 is provided with a second mounting hole, the second mounting hole and the second locking hole 532 are coaxially arranged, the second frame 70 is provided with a third mounting hole, the third mounting hole and the third locking hole 533 are coaxially arranged, and the second locking hole 532 and the third locking hole 533 are both blind holes;

[0101] The infrared touch frame assembly 100 also includes a second screw and a third screw. The second screw is passed through the second mounting hole and the second locking hole 532 to fix the back panel 80 and the corner piece 50. The third screw is passed through the third mounting hole and the third locking hole 533 to fix the second frame 70 and the corner piece 50.

[0102] Specifically, the limiting portion 53 is substantially L-shaped, one side of the limiting portion 53 abuts against the first frame 20 , the first bending portion 73 defines a through cavity, and the other side of the limiting portion 53 is received in the through cavity.

[0103] Moreover, the second locking hole 532 is arranged on one side of the limiting portion 53 close to the outlet cover plate 90. The second locking hole 532 is arranged as a blind hole, so that when the limiting portion 53 is screwed, iron filings are not easy to enter the interior of the smart blackboard 200 through the second locking hole 532, thereby protecting the display module.

[0104] In addition, the third locking hole 533 is provided at the portion of the limiting portion 53 received in the through-hole, and the limiting portion 53 is connected to the second frame 70 through the third locking hole 533, so that the limiting portion 53 plays a role in supporting the second frame 70. The third locking hole 533 is also a blind hole, so that during the process of screwing the limiting portion 53, iron filings are not easy to enter the interior of the smart blackboard 200 through the third locking hole, thereby protecting the display module.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infrared touch frame assembly, characterized in that: include: Touch box; A first frame, wherein a receiving cavity is provided in the first frame, the receiving cavity penetrates two opposite ends of the first frame so that the two opposite ends of the first frame are open, a positioning hole is provided on a side wall of the first frame, and the touch frame is received in the receiving cavity; A filter bar, wherein the filter bar is disposed in the accommodating cavity, and the touch frame is connected to the filter bar; A limiting plate, the limiting plate is arranged on the first frame and closes the opening, and the limiting plate abuts against the first frame; the limiting plate comprises a first protrusion, a convex block is arranged on the first protrusion, the first protrusion extends into the accommodating cavity, and the convex block is engaged with the positioning hole for positioning; A corner piece, wherein the corner piece is connected to the first frame and the limiting plate.

2. The infrared touch frame assembly according to claim 1, characterized in that: The first frame is formed by sheet metal stamping, and the first frame is set to a U-shaped structure.

3. The infrared touch frame assembly according to claim 1, characterized in that: The filter strip is bent to form a receiving cavity, the touch frame is received in the receiving cavity, and the outer wall of the filter strip after being bent forms a supporting groove for mounting a glass panel.

4. The infrared touch frame assembly according to claim 3, characterized in that: The filter strip includes an infrared component mounting portion and a supporting portion, the infrared component mounting portion is connected to the supporting portion, and the infrared component mounting portion and the supporting portion are respectively arranged on opposite sides of the touch frame; the infrared component mounting portion and the supporting portion enclose the receiving cavity, and the supporting portion is bent away from the side wall of the receiving cavity to form the supporting groove.

5. The infrared touch frame assembly according to claim 4, characterized in that: The first frame includes a first side wall, the first side wall is provided with a notch, the notch is connected to the opening, and the corner piece is arranged on the first side wall; the limiting plate is partially received in the notch, and the limiting plate abuts against the inner wall of the notch.

6. The infrared touch frame assembly according to claim 5, characterized in that: The supporting portion is bent to form a limiting cavity, and the limiting cavity is connected to the receiving cavity; The limiting plate includes a second protrusion, the first protrusion and the second protrusion are respectively located on opposite sides of the limiting plate, the first protrusion extends along the length direction of the first frame, the second protrusion extends in a direction away from the positioning hole, the second protrusion is accommodated in the limiting cavity, and the second protrusion is against the inner wall of the limiting cavity.

7. The infrared touch frame assembly according to claim 6, characterized in that: The corner piece is provided with a first locking hole, the first locking hole extends along the length direction of the first frame, the limiting plate is provided with a first mounting hole, and the first mounting hole is coaxially arranged with the first locking hole; The infrared touch frame assembly includes a first screw, and the first screw is passed through the first mounting hole and the first locking hole to fix the corner piece to the limiting plate.

8. The infrared touch frame assembly according to claim 5, characterized in that: The first frame further includes a second side wall and a third side wall, the second side wall is connected between the first side wall and the third side wall, and the second side wall is provided with the positioning hole; The filter strip further comprises a bottom plate and a load-bearing portion, the bottom plate comprises a supporting surface, the load-bearing portion, the infrared component mounting portion and the supporting portion are all arranged on the supporting surface, a gap is formed between the load-bearing portion and the first side wall, the positioning hole is connected to the gap, the first protrusion is inserted into the gap, and the load-bearing portion abuts against the second side wall; The bottom plate abuts against the third side wall, and the limiting plate abuts against the supporting surface.

9. The infrared touch frame assembly according to claim 8, characterized in that: The filter strip comprises a first positioning rib and a second positioning rib, the first positioning rib is arranged on the infrared component installation portion, the second positioning rib is arranged on the supporting surface, and the first positioning rib and the second positioning rib are arranged opposite to each other; The touch frame is clamped to the first positioning rib and the second positioning rib.

10. The infrared touch frame assembly according to claim 8, characterized in that: It also includes a second frame, which is fixedly connected to the corner piece, and the outer side wall of the limiting plate facing away from the first frame is flush with the second frame.

11. The infrared touch frame assembly according to claim 1, characterized in that: It also includes a second frame, which is provided with a fixing cavity, and the fixing cavity extends along the length direction of the second frame. The corner piece includes a fixing portion, and the fixing portion is passed through the fixing cavity and fixedly connected to the second frame.

12. A smart blackboard, characterized in that: It includes a display module, a back plate for fixing the display module, infrared components and an infrared touch frame assembly as described in any one of claims 1 to 11, wherein the display module includes a glass panel, the glass panel is arranged on the filter strip, the back plate is connected to the infrared touch frame assembly, the infrared components are arranged on the filter strip, and in each of the first frames, the infrared components and the glass panel are respectively located on opposite sides of the touch frame.

13. The smart blackboard according to claim 12, characterized in that: The first frame also includes a positioning plate, which is connected to the side wall of the first frame, extends in a direction away from the glass panel, and is arranged along the length direction of the first frame. The inner wall of the back plate is against the side wall of the other group of the first frames facing away from the positioning plate.

14. The smart blackboard according to claim 12, characterized in that: The first frame is provided with a wire outlet; The infrared touch frame assembly further includes a wire outlet cover plate, which is arranged on the first frame and at least partially covers the wire outlet; a limiting opening is provided on a side of the wire outlet cover plate away from the positioning hole, and the corner piece includes a limiting portion, which is received in the limiting opening to be clamped on the wire outlet cover plate; The limiting portion is provided with a first limiting groove, and the back plate is received in the first limiting groove.

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