Anti-interference capacitive touch screen structure

Abstract

The anti-interference capacitive touch screen structure comprises an electromagnetic shielding shell and a capacitive screen structure, a closed structure is arranged on the electromagnetic shielding shell, a front frame plate is arranged on one side of the electromagnetic shielding shell, a cavity opening is formed in the side, close to the front frame plate, of the electromagnetic shielding shell, and the capacitive screen structure is arranged in the cavity opening. The edge of the inner side wall of the front frame plate is in contact with the edge of the capacitive screen structure; the capacitive screen structure is further subjected to electromagnetic protection through the electromagnetic shielding shell, the anti-interference effect of the capacitive screen structure is guaranteed, and the capacitive screen structure can be applied to industrial scenes; according to the closed structure, the surface of the screen is covered with the two closed door plates, the surface of the screen can be protected when the screen is not used, the closed door plates can be rotated to the back when the screen is used, excessive area cannot be occupied, and the closed structure is more practical; the front frame plate can be taken down by dismantling the bolts, the capacitive screen structure can be taken out conveniently, and later maintenance is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of industrial touch screen technology, specifically to an anti-interference capacitive touch screen structure. Background Technology

[0002] Capacitive touchscreens, also known as capacitive touch displays, are a screen technology that detects touch points through human body sensing. They require no direct contact or only slight contact, locating touch coordinates by detecting induced current. Capacitive touchscreens are frequently used in industrial applications, widely applied in automation control and intelligent manufacturing. However, in industrial settings, they are susceptible to electromagnetic interference. Anti-interference measures for capacitive touchscreens utilize shielding layers. For example, Chinese utility model patent CN112987974A discloses an anti-interference capacitive touchscreen functional sheet, including an upper transparent conductive layer and a lower transparent conductive layer. The conductive surfaces of the two conductive layers are bonded together by a layer of transparent optical adhesive. Both the upper and lower transparent conductive layers include functional areas and wiring areas. The wiring areas are located around the functional areas and are covered by an insulating layer. Metal wiring is printed on the insulating layer and is connected to the transparent electrodes in the functional areas. The ground wire in the metal wiring is connected to the original electrode layer below the insulating layer through at least two vias on the insulating layer. However, current capacitive touchscreens have the following drawbacks:

[0003] Current capacitive touchscreens rely solely on a shielding layer for electromagnetic shielding, which is insufficient for industrial applications. Furthermore, the screen surface lacks protective measures and is easily damaged.

[0004] Therefore, we propose an anti-interference capacitive touchscreen structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-interference capacitive touchscreen structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference capacitive touch screen structure, comprising an electromagnetic shielding shell and a capacitive screen structure, wherein the electromagnetic shielding shell is provided with a closed structure, a front frame plate is provided on one side of the electromagnetic shielding shell, a cavity is opened on the side of the electromagnetic shielding shell near the front frame plate, the capacitive screen structure is disposed in the cavity, and the edge of the inner sidewall of the front frame plate contacts the edge of the capacitive screen structure.

[0007] The enclosed structure includes two strip frames fixed to both sides of the top surface of the electromagnetic shielding shell. Two enclosed door panels are movably installed at one end of the two strip frames outside the electromagnetic shielding shell. The main vertical shaft is vertically rotatably sleeved at the end of the strip frame outside the electromagnetic shielding shell. A short arm is fixedly sleeved on the main vertical shaft. A sub-vertical shaft is fixedly sleeved at the end of the short arm away from the main vertical shaft. A sleeve shaft is rotatably sleeved at the bottom end of the sub-vertical shaft. The bottom end of the sleeve shaft is fixedly connected to the top surface of the end of the enclosed door panel.

[0008] Preferably, the capacitive screen structure includes a screen housing, one side of which is an open structure. The screen body is fixed to the inner sidewall of the screen housing. An ITO shielding layer is fixed to the sidewall of the screen body. A laminated glass layer is fixed to the sidewall of the ITO shielding layer. An ITO conductive layer is fixed to the sidewall of the laminated glass layer. A surface glass layer is fixed to the sidewall of the ITO conductive layer. A grounding wire is electrically connected to the ITO shielding layer.

[0009] Preferably, the screen housing is fitted inside the cavity, the inner edge surface of the front frame plate contacts the edge surface of the screen housing, and the bottom surface of the electromagnetic shielding shell has multiple wiring ports corresponding to the position of the screen body.

[0010] Preferably, four positioning pins are horizontally fixed at the four corners of the electromagnetic shielding shell near the front frame plate, four positioning holes are horizontally opened at the four corners of the front frame plate, the positioning pins are inserted into the positioning holes, the end of the positioning hole away from the positioning pin is opened with a flared hole, the end of the positioning pin is opened with a threaded hole, the threaded hole is threaded to connect a bolt, the bolt head is located in the flared hole, and a U-shaped frame is fixed to the top surface of the electromagnetic shielding shell.

[0011] Preferably, the enclosed structure further includes a drive chamber, which is fixedly connected to the center of the top surface of the electromagnetic shielding shell. The drive chamber is fixedly connected between two strip frames, and the interior of the drive chamber is connected to the two strip frames. The interior of the drive chamber is vertically rotatably connected to two drive shafts, and a first drive pulley and a gear are fixedly sleeved on each drive shaft. The gears on the two drive shafts mesh with each other.

[0012] Preferably, a first driven pulley and a second driving pulley are fixedly sleeved on the main shaft, a first synchronous belt is sleeved on the first driven pulley and the first driving pulley, a second driven pulley is fixedly sleeved on the shaft, a second synchronous belt is sleeved on the second driving pulley and the second driven pulley, the diameter of the second driving pulley is twice the diameter of the second driven pulley, a handwheel is rotatably connected to the top surface of the drive compartment, and the end of the handwheel shaft is fixedly connected to the top of one of the drive shaft columns.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention provides further electromagnetic protection for the capacitive touchscreen structure through its electromagnetic shielding shell, ensuring the anti-interference effect of the capacitive touchscreen structure and enabling its application in industrial settings. The enclosed structure of this invention uses two closed panels to cover the screen surface, protecting the screen surface when not in use. When in use, the closed panels rotate to the back, minimizing space usage and enhancing practicality. Furthermore, the front frame can be removed by unscrewing the bolts, allowing for easy removal of the capacitive touchscreen structure and facilitating future maintenance. Attached Figure Description

[0015] Figure 1 These are schematic diagrams of the main structure in the first and second embodiments of this utility model;

[0016] Figure 2 These are schematic diagrams of the closed door panel structure in the first and second embodiments of this utility model.

[0017] Figure 3 These are exploded structural diagrams of the electromagnetic shielding shell in the first and second embodiments of this utility model.

[0018] Figure 4 This is a cross-sectional view of the closed structure in the first and second embodiments of this utility model.

[0019] Figure 5 This is a cross-sectional view of the capacitive screen structure in the first and second embodiments of this utility model.

[0020] Figure 6 This utility model Figure 4 Enlarged structural diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Electromagnetic shielding shell; 2. Capacitive screen structure; 3. Enclosed structure; 11. Cavity opening; 12. Front frame plate; 13. Cable insertion port; 14. Positioning pin; 15. Positioning hole; 16. Flared hole; 17. Threaded hole; 18. Bolt; 19. U-shaped frame; 21. Screen housing; 22. Screen body; 23. ITO shielding layer; 24. Laminated glass layer; 25. ITO conductive layer; 26. Surface glass. 27. Grounding wire; 31. Strip frame; 32. Enclosed door panel; 33. Drive compartment; 34. Main vertical shaft; 35. Short arm; 36. Sub-vertical shaft; 37. Sleeve shaft; 38. Drive shaft column; 39. First driving pulley; 310. Gear; 311. First driven pulley; 312. First synchronous belt; 313. Second driving pulley; 314. Second driven pulley; 315. Second synchronous belt; 316. Handwheel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figure 1-6 This utility model provides a technical solution: an anti-interference capacitive touch screen structure, including an electromagnetic shielding shell 1 and a capacitive screen structure 2. The electromagnetic shielding shell 1 is provided with a closed structure 3, and a front frame plate 12 is provided on one side of the electromagnetic shielding shell 1. A cavity 11 is opened on the side of the electromagnetic shielding shell 1 near the front frame plate 12. The capacitive screen structure 2 is disposed in the cavity 11. The edge of the inner sidewall of the front frame plate 12 contacts the edge of the capacitive screen structure 2. The electromagnetic shielding shell 1 provides further electromagnetic protection for the capacitive screen structure 2, ensuring the anti-interference effect of the capacitive screen structure 2, and can be applied in industrial scenarios.

[0025] The enclosed structure 3 includes two strip frames 31 fixed to both sides of the top surface of the electromagnetic shielding shell 1. Two enclosed door panels 32 are movably installed at one end of the two strip frames 31 outside the electromagnetic shielding shell 1. The main vertical shaft 34 is vertically rotatably sleeved at the end of the strip frame 31 outside the electromagnetic shielding shell 1. A short arm 35 is fixedly sleeved on the main vertical shaft 34. A sub-vertical shaft 36 is fixedly sleeved at the end of the short arm 35 away from the main vertical shaft 34. A sleeve shaft 37 is rotatably sleeved at the bottom end of the sub-vertical shaft 36. The bottom end of the sleeve shaft 37 is fixedly connected to the top surface of the end of the enclosed door panel 32. The enclosed structure 3 covers the screen surface through the two enclosed door panels 32. When the screen is not in use, it can protect the screen surface. When in use, the enclosed door panels 32 will rotate to the back, which will not take up too much space and is more practical.

[0026] Example 2:

[0027] Please see Figure 1-6 This is the second embodiment of the present invention. Based on the previous embodiment, the capacitive screen structure 2 includes a screen housing 21 with an open structure on one side. The screen body 22 is fixed to the inner wall of the screen housing 21. The ito shielding layer 23 is fixed to the side wall of the screen body 22. The laminated glass layer 24 is fixed to the side wall of the ito shielding layer 23. The ito conductive layer 25 is fixed to the side wall of the laminated glass layer 24. The surface glass 26 is fixed to the side wall of the ito conductive layer 25. The ito shielding layer 23 is electrically connected to a grounding wire 27. The grounding wire 27 is connected to the control circuit on the screen body 22 and grounded through a terminal, so that the ito shielding layer 23 has a good shielding effect.

[0028] The screen housing 21 is fitted into the cavity 11. The inner edge surface of the front frame plate 12 contacts the edge surface of the screen housing 21. The bottom surface of the electromagnetic shielding shell 1 has multiple wiring ports 13 corresponding to the position of the screen body 22. The wiring ports 13 correspond to the terminal heads of the screen body 22 for easy wiring.

[0029] Four positioning pins 14 are horizontally fixed at the four corners of the electromagnetic shielding shell 1 near the front frame plate 12. Four positioning holes 15 are horizontally opened at the four corners of the front frame plate 12. The positioning pins 14 are inserted into the positioning holes 15. A flared hole 16 is opened at the end of the positioning hole 15 away from the positioning pin 14. A threaded hole 17 is opened at the end of the positioning pin 14. The threaded hole 17 is threaded to connect to a bolt 18. The head of the bolt 18 is located in the flared hole 16. A U-shaped frame 19 is fixed to the top surface of the electromagnetic shielding shell 1. The front frame plate 12 can be removed by removing the bolt 18, and the capacitor screen structure 2 can be easily removed for easy maintenance. The U-shaped frame 19 is used for installation and can be fixed to the support arm.

[0030] The enclosed structure 3 also includes a drive chamber 33, which is fixedly connected to the center of the top surface of the electromagnetic shielding shell 1. The drive chamber 33 is fixedly connected between two strip frames 31. The interior of the drive chamber 33 is connected to the two strip frames 31. The interior of the drive chamber 33 is vertically rotatably connected to two drive shafts 38. Each drive shaft 38 is fixedly fitted with a first drive pulley 39 and a gear 310. The gears 310 on the two drive shafts 38 mesh with each other.

[0031] A first driven pulley 311 and a second driving pulley 313 are fixedly sleeved on the main shaft 34. A first synchronous belt 312 is sleeved on the first driven pulley 311 and the first driving pulley 39. A second driven pulley 314 is fixedly sleeved on the shaft 37. A second synchronous belt 315 is sleeved on the second driving pulley 313 and the second driven pulley 314. The diameter of the second driving pulley 313 is twice the diameter of the second driven pulley 314. A handwheel 316 is rotatably connected to the top surface of the drive compartment 33. The shaft end of the handwheel 316 is fixedly connected to the top of one of the drive shaft columns 38. By rotating the handwheel 316, the short arms 35 on both sides and the closed door panel 32 can be driven to rotate synchronously. When the short arm 35 rotates 180 degrees, the closed door panel 32 rotates 360 degrees, so that the closed door panel 32 can be opened or closed.

[0032] Example 3:

[0033] Please see Figure 1-6This is the third embodiment of the present invention, based on the above two embodiments. In use, the U-shaped frame 19 is connected to the display fixing structure for installation. During use, the handwheel 316 is turned to open the two closed door panels 32, which then rotate to the back position of the electromagnetic shielding shell 1, ready for use. After use, the handwheel 316 is reversed so that the two closed door panels 32 cover the surface of the cavity 11, protecting the screen. The electromagnetic shielding shell 1 of this invention provides further electromagnetic protection for the capacitive screen structure 2, ensuring its anti-interference effect and making it suitable for industrial applications. The closed structure 3 of this invention covers the screen surface with the two closed door panels 32, protecting the screen surface when not in use. When in use, the closed door panels 32 rotate to the back, minimizing space usage and enhancing practicality. The front frame plate 12 can be removed by unscrewing the bolts 18, allowing for easy removal of the capacitive screen structure 2 and facilitating future maintenance.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-interference capacitive touchscreen structure, comprising an electromagnetic shielding shell (1) and a capacitive screen structure (2), characterized in that: The electromagnetic shielding shell (1) is provided with a closed structure (3), and a front frame plate (12) is provided on one side of the electromagnetic shielding shell (1). A cavity (11) is opened on the side of the electromagnetic shielding shell (1) near the front frame plate (12). The capacitive screen structure (2) is located in the cavity (11). The edge of the inner sidewall of the front frame plate (12) contacts the edge of the capacitive screen structure (2). The enclosed structure (3) includes two strip frames (31) fixed to both sides of the top surface of the electromagnetic shielding shell (1). Two enclosed door panels (32) are movably arranged at one end of the two strip frames (31) outside the electromagnetic shielding shell (1). The main vertical shaft (34) is vertically rotated and sleeved at one end of the strip frame (31) outside the electromagnetic shielding shell (1). A short arm (35) is fixedly sleeved on the main vertical shaft (34). A sub-vertical shaft (36) is fixedly sleeved at the end of the short arm (35) away from the main vertical shaft (34). A sleeve shaft (37) is rotatably sleeved at the bottom end of the sub-vertical shaft (36). The bottom end of the sleeve shaft (37) is fixedly connected to the top surface of the end of the enclosed door panel (32).

2. The anti-interference capacitive touchscreen structure according to claim 1, characterized in that: The capacitive screen structure (2) includes a screen housing (21), one side of which is an open structure. The screen body (22) is fixed to the inner wall of the screen housing (21). The ito shielding layer (23) is fixed to the side wall of the screen body (22). The interlayer glass layer (24) is fixed to the side wall of the ito shielding layer (23). The ito conductive layer (25) is fixed to the side wall of the interlayer glass layer (24). The surface glass (26) is fixed to the side wall of the ito conductive layer (25). The grounding wire (27) is electrically connected to the ito shielding layer (23).

3. The anti-interference capacitive touchscreen structure according to claim 2, characterized in that: The screen housing (21) is fitted inside the cavity (11), the inner edge surface of the front frame plate (12) contacts the edge surface of the screen housing (21), and the bottom surface of the electromagnetic shielding shell (1) has multiple plug-in ports (13) corresponding to the position of the screen body (22).

4. The anti-interference capacitive touchscreen structure according to claim 1, characterized in that: The electromagnetic shielding shell (1) has four horizontally fixed positioning pins (14) at the four corners near the front frame plate (12). The front frame plate (12) has four horizontally opened positioning holes (15) at the four corners. The positioning pins (14) are inserted into the positioning holes (15). The positioning holes (15) have flared holes (16) at the end away from the positioning pins (14). The end of the positioning pins (14) has a threaded hole (17). The threaded hole (17) is threaded to connect to a bolt (18). The head of the bolt (18) is located inside the flared hole (16). The top surface of the electromagnetic shielding shell (1) is fixed to a U-shaped frame (19).

5. The anti-interference capacitive touchscreen structure according to claim 1, characterized in that: The enclosed structure (3) also includes a drive chamber (33), which is fixedly connected to the center of the top surface of the electromagnetic shielding shell (1). The drive chamber (33) is fixedly connected between two strip frames (31). The interior of the drive chamber (33) is connected to the two strip frames (31). The interior of the drive chamber (33) is vertically rotatably connected to two drive shafts (38). Each drive shaft (38) is fixedly fitted with a first drive pulley (39) and a gear (310). The gears (310) on the two drive shafts (38) mesh with each other.

6. The anti-interference capacitive touchscreen structure according to claim 5, characterized in that: The first driven pulley (311) and the second driving pulley (313) are fixedly sleeved on the main shaft (34). The first driven pulley (311) and the first driving pulley (39) are sleeved on the first synchronous belt (312). The second driven pulley (314) is fixedly sleeved on the sleeve shaft (37). The second synchronous belt (315) is sleeved on the second driving pulley (313) and the second driven pulley (314). The diameter of the second driving pulley (313) is twice the diameter of the second driven pulley (314). The top surface of the drive chamber (33) is rotatably connected to a handwheel (316). The shaft end of the handwheel (316) is fixedly connected to the top of one of the drive shaft columns (38).

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