Infrared touch screen structure with low touch height

Abstract

The utility model provides an infrared touch screen structure with low touch height, which comprises a touch display area and a frame surrounding the touch display area, and the touch display area comprises a display screen and a toughened glass plate which is arranged in front of the display screen and is used as a touch platform. The frame is a structural member for fixing the display screen and the tempered glass plate from the periphery. And an infrared contact circuit board is arranged in the frame. A clamping groove is formed in the frame. The clamping groove comprises a front edge plate and a baffle. The height of the baffle is not larger than the width of the tempered glass plate. A light filtering strip is arranged between the frame and the toughened glass plate, and the frame and the toughened glass plate are fixed by the light filtering strip. According to the utility model, through reducing a clamping groove front baffle in the prior art, the interval between the armorplate glass and the infrared transmitting tube and the interval between the armorplate glass and the infrared receiving tube are reduced, and the infrared detection net can be tightly attached to the armorplate glass, so that the touch height is reduced, and the operation accuracy of personnel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared touch screens, in particular to an infrared touch screen structure with a low touch height. Background Art

[0002] Infrared technology touch screens are composed of infrared emitting and receiving sensing elements installed on the touch screen frame. On the screen surface, an infrared detection network is formed. Any touching object can change the infrared on the contact point to realize touch screen operation. The realization principle of infrared touch screen is similar to that of surface acoustic wave touch. It uses infrared emitting and receiving sensing elements. These elements form an infrared detection network on the screen surface. The object of touch operation (such as fingers) can change the infrared of the contact point, which is then converted into the coordinate position of the touch to realize the response of the operation. On the infrared touch screen, the circuit board devices arranged on the four sides of the screen have infrared emitting tubes and infrared receiving tubes, which form a horizontal and vertical cross infrared matrix.

[0003] Existing infrared touch screen structure (such as Figure 1 As shown in FIG. 1 , there is a slot for fixing the tempered glass plate 3 on the frame L1, and the infrared emitting tube 5 and the infrared receiving tube 6 are located above the slot front block L11. There is also a position for fixing the filter strip L2 on the slot front block L11, which results in a thicker material of the slot front block L11, making the step between the profile surface and the tempered glass plate 3 higher, and the whole machine is not very beautiful.

[0004] At the same time, since there is a slot front block L11 between the tempered glass plate 3 and the infrared transmitting tube 5 and the infrared receiving tube 6, a distance equal to the thickness of the slot front block L11 is formed between the infrared detection network and the tempered glass plate 3, thereby raising the touch height. The direct manifestation is that when the touch screen is operated, the infrared rays of the contact point are changed before the finger or touch pen touches the tempered glass plate 3, which is easy to cause erroneous actions, thereby affecting the accuracy of the operation. Utility Model Content

[0005] The utility model provides an infrared touch screen structure with a low touch height, aiming at the situation that the infrared ray cannot be close to the tempered glass plate due to the front block of the tempered glass slot, the touch height is high and erroneous actions are easily generated.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] An infrared touch screen structure with a low touch height includes a touch display area 9 and a frame 1 surrounding the touch display area 9, wherein the touch display area 9 includes a display screen 8 and a tempered glass plate 3 arranged in front of the display screen 8 as a touch platform. The frame 1 is a structural member that fixes the display screen 8 and the tempered glass plate 3 from all sides. An infrared contact circuit board 4 is arranged in the frame 1. A card slot 11 is arranged in the frame 1. The card slot 11 includes a front plate 111 and a baffle 112. The height of the baffle 112 is not greater than the width of the tempered glass plate 3. A filter strip 2 is arranged between the frame 1 and the tempered glass plate 3, and the filter strip 2 fixes the frame 1 and the tempered glass plate 3.

[0008] Preferably, the upper end of the filter strip 2 is configured as a single-side inverted structure and is snap-fitted to the front plate 111 .

[0009] Preferably, an infrared channel 113 is formed between the front plate 111 and the baffle 112 .

[0010] Preferably, an infrared emitting tube 5 is installed on the infrared contact circuit board 4 located in one of the frames 1, and an infrared receiving tube 6 is installed on the infrared contact circuit board 4 located in the other frame 1 on the opposite side. The infrared rays emitted by the infrared emitting tube 5 pass through the infrared channel 113 to form an infrared detection network on the tempered glass plate 3.

[0011] Preferably, a colorless transparent plate 1111 is provided on the front plate 111 , and the colorless transparent plate 1111 is located between the filter strip 2 and the infrared contact circuit board 4 .

[0012] Preferably, the upper end of the filter strip 2 is configured as a single-side inverted structure such as a triangular inverted structure, a T-shaped inverted structure, an inner triangular inverted structure, or an inner T-shaped inverted structure.

[0013] Preferably, ethylene acetate 7 is adhered to the side of the tempered glass plate 3 facing the display screen 8 .

[0014] The utility model reduces the spacing between the tempered glass plate and the infrared transmitting tube and the infrared receiving tube by reducing the front stopper of the card slot in the prior art. The infrared detection network can be closely attached to the tempered glass plate, so the touch height is also reduced, thereby improving the accuracy of personnel operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a cross-sectional view of the existing infrared touch screen structure;

[0016] Attached Figure 2 It is a structural diagram of an embodiment of the utility model;

[0017] Attached Figure 3It is an enlarged cross-sectional view of AA in the structure of the embodiment of the utility model;

[0018] Attached Figure 4 This is a position diagram of the infrared transmitting tube or infrared receiving tube and the tempered glass plate in the embodiment of the utility model;

[0019] Attached Figure 5 It is a cross-sectional view of several embodiments of the single-side undercut structure in the utility model.

[0020] The following are the descriptions of the reference numerals:

[0021] 1: frame, 2: filter strip, 3: tempered glass plate, 4: infrared contact circuit board, 5: infrared transmitting tube, 6: infrared receiving tube, 7: vinyl acetate, 8: display screen, 9: touch display area, 11: card slot, 111: front plate, 112: baffle, 113: infrared channel, 1111: colorless transparent plate. DETAILED DESCRIPTION

[0022] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0023] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand the advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0024] Embodiment 1

[0025] An infrared touch screen structure with low touch height, such as Figure 2-3As shown, it includes a touch display area 9 and a frame 1 surrounding the touch display area 9, and the touch display area 9 includes a display screen 8 and a tempered glass plate 3 arranged in front of the display screen 8 as a touch platform. The frame 1 is a structural member that fixes the display screen 8 and the tempered glass plate 3 from all sides. An infrared contact circuit board 4 is arranged in the frame 1. A card slot 11 is arranged in the frame 1. The card slot 11 includes a front plate 111 and a baffle 112. The height of the baffle 112 is not greater than the width of the tempered glass plate 3. A filter strip 2 is arranged between the frame 1 and the tempered glass plate 3, and the filter strip 2 fixes the frame 1 and the tempered glass plate 3. Furthermore, the upper end of the filter strip 2 is arranged as a single-sided inverted structure, and is snap-connected with the front plate 111. As shown Figure 4 As shown, further, the upper end of the filter strip 2 is configured as a single-side inverted structure such as a triangular inverted structure, a T-shaped inverted structure, an inner triangular inverted structure, or an inner T-shaped inverted structure.

[0026] Furthermore, an infrared channel 113 is formed between the front plate 111 and the baffle 112. Furthermore, an infrared emitting tube 5 is installed on the infrared contact circuit board 4 located in one of the frame 1, and an infrared receiving tube 6 is installed on the infrared contact circuit board 4 located in the other frame 1 on the opposite side. The infrared rays emitted by the infrared emitting tube 5 pass through the infrared channel 113 to form an infrared detection network on the tempered glass plate 3.

[0027] Furthermore, a colorless transparent plate 1111 is provided on the front plate 111, and the colorless transparent plate 1111 is located between the filter bar 2 and the infrared contact circuit board 4. The function of the colorless transparent plate 1111 is to prevent the filter bar 2 from sliding into the card slot 11 and squeezing the infrared contact circuit board 4, so that the infrared contact circuit board 4 cannot work normally.

[0028] Furthermore, ethylene acetate 7 is pasted on the side of the tempered glass plate 3 facing the display screen 8. In this embodiment, the frame 1 fixes the tempered glass plate 3, and a circle of ethylene acetate 7 is pasted on the inner side of the tempered glass plate 3; when the display screen 8 is fixed on the frame 1, the ethylene acetate 7 is squeezed, and the ethylene acetate 7 squeezes the tempered glass plate 3, and the tempered glass plate 3 will press the filter strip 2 to prevent it from loosening.

[0029] Working principle:

[0030] Compared with the existing structure, the frame 1 cancels the slot front block L11 for fixing the tempered glass plate 3 and replaces it with a filter strip 2. The filter strip 2 is changed from the upper and lower sides of the existing structure to a single-side fixing method with an inverted structure on the upper side, and the lower side of the filter strip 2 is directly pressed on the tempered glass plate 3, thus becoming a fixed front block of the tempered glass plate 3. Since the frame 1 lacks the slot front block L11, the step between the profile surface and the tempered glass plate 3 is reduced, and the whole device looks more beautiful. The frame 1 is also provided with a space for installing an infrared touch circuit board 4, on which an infrared emitting tube 5 or an infrared receiving tube 6 is installed. In the infrared touch circuit boards 4 of the two corresponding frames 1, one side is internally installed with an infrared emitting tube 5, and the other side is internally installed with an infrared receiving tube 6, so that an infrared detection network is formed on the tempered glass plate 3. Since the frame 1 lacks the card slot front block L11, the interval between the tempered glass plate 3 and the infrared emitting tube 5 and the infrared receiving tube 6 is reduced, and the infrared detection network can be close to the tempered glass plate 3, so the touch height is also reduced. This makes it less likely for operators to make erroneous actions and improves the accuracy of the equipment.

[0031] In summary, the utility model reduces the distance between the tempered glass plate and the infrared transmitting tube and the infrared receiving tube by reducing the front block of the card slot in the prior art. The infrared detection network can be close to the tempered glass plate, so the touch height is also reduced, thereby improving the accuracy of the equipment.

[0032] In the description of the present invention, it should be understood that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above is only for explaining the implementation mode of the utility model and is not used to limit the utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model without creative work should be included in the protection scope of the utility model.

Claims

1. An infrared touch screen structure with a low touch height, comprising a touch display area (9) and a frame (1) surrounding the touch display area (9), wherein the touch display area (9) comprises a display screen (8) and a tempered glass plate (3) arranged in front of the display screen (8) as a touch platform; the frame (1) is a structural member for fixing the display screen (8) and the tempered glass plate (3) from all sides; an infrared contact circuit board (4) is arranged in the frame (1); and the characteristics are as follows: A card slot (11) is provided in the frame (1); the card slot (11) comprises a front plate (111) and a baffle (112); the height of the baffle (112) is not greater than the width of the tempered glass plate (3); a filter strip (2) is provided between the frame (1) and the tempered glass plate (3), and the filter strip (2) fixes the frame (1) and the tempered glass plate (3).

2. The infrared touch screen structure with low touch height as claimed in claim 1, characterized in that: The upper end of the filter strip (2) is arranged as a single-side inverted structure and is snap-connected with the front plate (111).

3. The infrared touch screen structure with low touch height as claimed in claim 1, characterized in that: An infrared channel (113) is formed between the front plate (111) and the baffle (112).

4. The infrared touch screen structure with low touch height as claimed in claim 3, characterized in that: An infrared emitting tube (5) is installed on the infrared contact circuit board (4) located in one of the frames (1), and an infrared receiving tube (6) is installed on the infrared contact circuit board (4) located in the other frame (1) on the opposite side; infrared rays emitted by the infrared emitting tube (5) pass through the infrared channel (113) to form an infrared detection network on the tempered glass plate (3).

5. The infrared touch screen structure with low touch height as claimed in claim 1, characterized in that: A colorless transparent plate (1111) is provided on the front plate (111), and the colorless transparent plate (1111) is located between the filter strip (2) and the infrared contact circuit board (4).

6. The infrared touch screen structure with low touch height as claimed in claim 2, characterized in that: The one-side undercut structure is a triangular undercut, a T-shaped undercut, an inner triangular undercut or an inner T-shaped undercut.

7. The infrared touch screen structure with low touch height as claimed in claim 1, characterized in that: Ethylene acetate (7) is adhered to the side of the tempered glass plate (3) facing the display screen (8).

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