Antifouling and antibacterial effect detection device for touch screen

Abstract

The invention relates to the technical field of touch screen antibacterial detection, and discloses an antifouling and antibacterial effect detection device for a touch screen, which comprises a base assembly, a wear simulation assembly and a moving assembly, the wear simulation assembly comprises a finger simulation structure and a sebum secretion mechanism, the finger simulation structure communicates with the sebum secretion mechanism, and the sebum secretion mechanism can provide sebum-like secretion liquid for the finger simulation structure; the moving assembly can move back and forth along the base assembly, the abrasion simulation assembly is installed on the moving assembly, and friction simulation is conducted when the abrasion simulation assembly makes contact with the touch screen. The sebum secretion mechanism is used for releasing sebum-like secretions, damage generated by a biofilm on the touch screen and mechanical friction in actual use is simulated, the scene that multiple persons use the touch screen for a long time in public places can be effectively simulated, the accuracy of touch screen antibacterial performance detection is greatly improved, and the detection cost is reduced. And a high-simulation test platform is provided for product quality control.

Description

Technical Field

[0001] The present invention belongs to the technical field of antibacterial detection of touch screens, and in particular relates to an antifouling and antibacterial effect detection device for touch screens. Background Art

[0002] With the widespread use of touch screens in public scenarios (such as self-service terminals, ATM machines, interactive information screens, etc.), the high frequency and multi-person contact characteristics provide favorable conditions for the attachment and reproduction of microorganisms such as bacteria and viruses. For this reason, the industry generally adopts antimicrobial coatings or surface treatment technologies to inhibit microbial growth; however, existing antimicrobial performance testing methods have significant limitations and it is difficult to truly simulate the long-term antimicrobial effect in actual usage scenarios.

[0003] Traditional testing methods are mostly based on static contact models, considering only the gradual damage to the coating structure caused by mechanical stress generated by finger sliding friction. However, lipids and proteins in finger sebum secretions form biofilms, further weakening the activity of antimicrobial agents. Therefore, in order to simulate the wear and tear caused by the combined effects of finger sebum, sweat, and other organic residues and friction during actual use, and to test the antifouling and antimicrobial performance and lifespan of touch screens, a device for testing the antifouling and antimicrobial effectiveness of touch screens was proposed. Summary of the Invention

[0004] In response to the above situation, in order to solve the problem that the existing technology adopts a static simulation detection method, which only considers the progressive damage to the coating structure caused by the mechanical stress generated by the sliding friction of the finger, but lacks the loss caused by the organic combination of the biofilm formed by the finger secretions and the friction, resulting in inaccurate detection of the anti-fouling and antibacterial performance of the touch screen, a device for detecting anti-fouling and antibacterial effects of touch screens is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an antifouling and antibacterial effect detection device for a touch screen, comprising: a base assembly 3; and A wear simulation assembly 1, comprising a finger simulation structure 11 and a sebum secretion mechanism 13, wherein the finger simulation structure 11 and the sebum secretion mechanism 13 are in communication with each other and can provide sebum-like secretion liquid to the finger simulation structure 11; The movable component 2 is capable of reciprocating along the base assembly 3 . The wear simulation component 1 is mounted on the movable component 2 . When the wear simulation component 1 contacts the touch screen, friction simulation is performed.

[0006] In this way, the sebum secretion mechanism 13 can be used to release sebum-like secretions during the friction simulation process of the touch screen 4, simulating the damage caused by the combined action of the biofilm and mechanical friction on the touch screen 4 during actual use, and then simulating the antibacterial performance of the touch screen 4 after a period of use, which can improve the accuracy of the antibacterial performance detection of the touch screen 4.

[0007] As a further description of the above technical solution: The finger simulation structure 11 includes a friction finger 111, wherein the friction finger 111 has a liquid storage cavity 112, and the friction finger 111 is connected to the sebum secretion mechanism 13 through a liquid inlet 114; The friction finger 111 is provided with a liquid outlet 113 , which is in communication with the liquid storage cavity 112 for leaking sebum liquid.

[0008] As a further description of the above technical solution: The sebum secretion mechanism 13 includes a pump body 131 and a liquid storage tank 132, and the liquid storage tank 132 is fixed on the moving component 2; The output end of the pump body 131 is connected to the liquid inlet 114 , and the input end of the pump body 131 is connected to the interior of the liquid storage tank 132 .

[0009] As a further description of the above technical solution: The moving assembly 2 includes a moving beam 21, a slider 22 and a moving member 23. Two groups of sliders 22 are fixed at both ends of the moving beam 21, and a moving member 23 is provided on one group of sliders 22. The wear simulation assembly 1 is fixedly mounted on the moving beam 21 .

[0010] As a further description of the above technical solution: The wear simulation assembly 1 further includes a driving structure 12 , which is connected to the finger simulation structure 11 and is used to drive the finger simulation structure 11 to move; The driving structure 12 includes a fixed frame 123 and a finger driving member 121 fixed on the moving beam 21. A pressing link 122 is provided between the telescopic end of the finger driving member 121 and the friction finger 111. The two ends of the pressing link 122 are respectively connected to the finger driving member 121 and the friction finger 111 for rotation. A fixed link 124 is fixed to the fixing frame 123 , and the fixed link 124 is rotatably connected to the friction finger 111 .

[0011] As a further description of the above technical solution: The base assembly 3 includes a test table 31 for mounting a touch screen. Guide members 32 are provided on both sides of the test table 31, and guide rails 33 are fixed on the guide members 32. The slider 22 slides back and forth on the guide rail 33 .

[0012] As a further description of the above technical solution: The moving member 23 includes a moving driving member 231 and a gear 232 . The gear 232 is fixed to the output end of the moving driving member 231 .

[0013] As a further description of the above technical solution: A rack 34 arranged parallel to the guide rail 33 is fixed on one set of the guide members 32 , and the gear 232 and the rack 34 are meshed with each other.

[0014] As a further description of the above technical solution: The friction finger 111 is a finger-shaped structure, and the liquid outlet 113 is located at the fingertip of the friction finger 111.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: (1) In the present invention, by setting up a wear simulation component, the sebum secretion mechanism is used to release sebum-like secretions during the simulated friction process, simulating the damage caused by the biofilm and mechanical friction on the touch screen during actual use. This overcomes the limitation of traditional static testing that only considers mechanical stress damage, effectively simulates the scene of multiple people and long-term use in public places, greatly improves the accuracy of touch screen antibacterial performance testing, and provides a highly simulated test platform for product quality control.

[0016] (2) In the present invention, the friction and secretion exudation of the moving components and the driving structure are controlled to simulate the high-frequency and multi-person usage scenarios in public places, so that the test results of the touch screen are consistent with the actual usage scenarios. It not only covers the loss of antibacterial coating due to mechanical stress, but also fully considers the comprehensive weakening of the coating activity by the combined effects of organic residues such as sebum and sweat on fingers and friction in actual situations, which is conducive to improving the accuracy of the antibacterial effect detection of the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the anti-fouling and antibacterial effect detection device for a touch screen proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the wear simulation component of the anti-fouling and antibacterial effect detection device for a touch screen proposed by the present invention; Figure 3 Schematic diagram of the local structure of the wear simulation component; Figure 4 Schematic diagram of the friction finger structure Figure 1 ; Figure 5 Schematic diagram of the friction finger structure Figure 2 ; Figure 6 This is a schematic diagram of the structure of the mobile components of the anti-fouling and antibacterial effect detection device for a touch screen proposed by the present invention; Figure 7 This is a schematic diagram of the base assembly structure of the anti-fouling and antibacterial effect detection device for a touch screen proposed by the present invention; Figure 8 A schematic diagram of the local structure of the mobile component.

[0018] Legend: 1. Wear simulation component; 2. Moving component; 3. Base assembly; 11. Finger simulation structure; 111. Friction finger; 112. Liquid storage chamber; 113. Liquid outlet; 114. Liquid inlet; 12. Driving structure; 121. Finger driving part; 122. Pressing connecting rod; 123. Fixed frame; 124. Fixed connecting rod; 13. Sebum secretion mechanism; 131. Pump body; 132. Liquid storage tank; 21. Moving beam; 22. Slider; 23. Moving part; 231. Moving driving part; 232. Gear; 31. Test bench; 32. Guide part; 33. Guide rail; 34. Rack; 4. Touch screen. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0021] As mentioned in the background, to address the issue of antimicrobial testing for touch screens, related techniques have employed methods that involve friction and abrasion of the touch screen prior to testing. However, conventional touch screen antimicrobial testing devices typically employ static simulation methods, which only consider the gradual damage to the coating structure caused by mechanical stress generated by finger sliding friction, while ignoring the damage caused by the organic combination of biofilm formed by finger secretions and friction.

[0022] In order to solve the problem in the related art of detecting changes in antibacterial properties caused by the loss of antibacterial layer due to mechanical stress generated by finger sebum secretion and finger sliding friction in public places due to high frequency and multiple touches on the touch screen, an anti-fouling and antibacterial effect detection device for a touch screen is designed in the embodiment of the present application. Figures 1-8 As shown, it includes a base assembly 3, a wear simulation component 1, and a moving component 2; the wear simulation component 1 includes a finger simulation structure 11 and a sebum secretion mechanism 13, the finger simulation structure 11 and the sebum secretion mechanism 13 are interconnected, and the sebum secretion mechanism 13 can provide sebum-like secretion liquid for the finger simulation structure 11; the moving component 2 can move back and forth along the base assembly 3, and the wear simulation component 1 is installed on the moving component 2, and friction simulation is performed when the wear simulation component 1 contacts the touch screen.

[0023] In this way, when testing the antibacterial performance of the touch screen, the wear simulation component 1 can be used to rub against the touch screen to simulate the antibacterial performance of the touch screen under the condition of multiple people and high frequency use in public places. At the same time, during the friction between the finger simulation structure 11 and the touch screen, the sebum secretion mechanism 13 is used to exude sebum-like secretions to form a biofilm between the sebum and the touch screen, simulating the friction loss between the biofilm and the mechanical friction stress and the touch screen, thereby obtaining the anti-fouling and antibacterial performance of the touch screen. In addition, when the wear simulation component 1 contacts the touch screen, the moving component 2 drives the finger simulation structure 11 to move back and forth on the surface of the touch screen, which can cause friction and wear on the touch surface, and detect the antibacterial performance caused by the loss of the antibacterial layer due to damage caused by the friction stress between the finger and the touch screen surface after the touch screen has been used for a period of time; and when the sebum secretion mechanism 13 provides sebum-like secretions into the finger simulation structure 11, it can further simulate the wear and damage caused by the sebum, sweat and other organic residues of the fingers and friction in actual scenes, and further detect the anti-fouling and antibacterial performance of the touch screen.

[0024] The anti-fouling and antibacterial effect detection device of the touch screen in the embodiment of the present application can be used for the antibacterial performance detection of the touch screen, specifically but not limited to the touch screen of interactive machine equipment, ticket purchasing machine, etc.

[0025] See Figure 2-Figure 5 The wear simulation component 1 includes a finger simulation structure 11 and a sebum secretion mechanism 13. The finger simulation structure 11 is used to press on the touch screen and perform mechanical friction with the touch screen. The sebum secretion mechanism 13 is used to provide sebum-like secretions to the finger simulation structure 11, which can simulate the contact between the finger secretions and the touch screen during use, and then detect the loss of the antibacterial layer caused by the formation of biofilm by lipids, proteins and other components in the finger sebum secretions and mechanical friction when used frequently and by multiple people, thereby improving the accuracy of the anti-fouling and antibacterial effect on the touch screen.

[0026] Finger simulation structure 11 simulates the touch screen's finger during use and includes at least a friction finger 111 with a liquid outlet 113. Sebum secretion mechanism 13 provides sebum-like secretions and includes at least a pump 131 for storing sebum-like secretions and a liquid reservoir 132 for driving the extraction of liquid.

[0027] Among them, sebum-like secretion is a liquid that simulates finger secretion, which can be made by mixing squalene, triglycerides, beeswax, oleic acid and a small amount of salt water.

[0028] In one embodiment, the finger simulation structure 11 includes a friction finger 111, which has a liquid storage chamber 112. The friction finger 111 is connected to the sebum secretion mechanism 13 through a liquid inlet 114; a liquid outlet 113 is provided on the friction finger 111, and the liquid outlet 113 is connected to the liquid storage chamber 112 for leaking sebum liquid; the sebum secretion mechanism 13 includes a pump body 131 and a liquid storage tank 132, and the liquid storage tank 132 is fixed on the moving component 2; the output end of the pump body 131 is connected to the liquid inlet 114, and the input end of the pump body 131 is connected to the interior of the liquid storage tank 132. The wear simulation component 1 also includes a driving structure 12, which is connected to the finger simulation structure 11 for driving the finger simulation structure 11 to move; the driving structure 12 includes a fixed frame 123 and a finger driving member 121 fixed on the moving beam 21, and a pressing link 122 is provided between the telescopic end of the finger driving member 121 and the friction finger 111, and the two ends of the pressing link 122 are respectively connected to the finger driving member 121 and the friction finger 111 for rotation; a fixed link 124 is fixed on the fixed frame 123, and the fixed link 124 is connected to the friction finger 111 for rotation; the friction finger 111 is a finger-shaped structure, and the liquid outlet 113 is located at the fingertip of the friction finger 111.

[0029] When the telescopic end of the finger driving member 121 is extended, the finger simulation structure 11 is pushed to rotate around the connection with the fixed connecting rod 124 by pressing the connecting rod 122, so that the fingertip part of the friction finger 111 is pressed on the touch screen 4. When the friction finger 111 moves back and forth on the touch screen 4, the pump body 131 draws the sebum-like secretions in the liquid storage tank 132 into the friction finger 111, and the sebum-like secretions enter the liquid storage cavity 112 through the liquid inlet 114, and then seep out onto the surface of the touch screen 4 through the liquid outlet 113. Together with the friction of the friction finger 111, they simulate the loss of the antibacterial layer on the touch screen 4, and then detect the remaining antibacterial performance of the touch screen 4, thereby realizing the antibacterial performance detection of the touch screen 4.

[0030] See Figure 6-Figure 8The moving component 2 refers to a structure capable of reciprocating movement, which includes a moving beam 21 and a moving member 23 . The moving member 23 can drive the moving beam 21 to reciprocate on the base assembly 3 .

[0031] In one embodiment, referring to Figure 6-Figure 8 The moving component 2 includes a moving beam 21, a slider 22 and a moving part 23. Two groups of sliders 22 are fixed at both ends of the moving beam 21, and a moving part 23 is provided on one group of sliders 22; the wear simulation component 1 is fixedly installed on the moving beam 21, and the base assembly 3 includes a test bench 31 for installing a touch screen. Guide members 32 are provided on both sides of the test bench 31, and guide rails 33 are fixed on the guide members 32; the slider 22 slides back and forth on the guide rails 33, and the moving part 23 includes a moving driving member 231 and a gear 232, and the gear 232 is fixed at the output end of the moving driving member 231; a rack 34 arranged parallel to the guide rail 33 is fixed on one group of guide members 32, and the gear 232 and the rack 34 are engaged with each other.

[0032] The output end of the mobile driving member 231 drives the gear 232 to rotate forward and reverse. The gear 232 drives the slider 22 to move by meshing with the rack 34. When the slider 22 moves along the guide rail 33, it drives the wear simulation component 1 to rub back and forth with the surface of the touch screen 4.

[0033] In order to more clearly understand the working process of the antifouling and antibacterial effect detection device for a touch screen in the embodiment of the present application, refer to Figures 1-8 , a specific embodiment is described below: When testing the antifouling and antibacterial properties of a touch screen 4, the touch screen 4 to be tested is first fixed to the test platform 31 of the base assembly 3 and secured by a pressure plate (not shown). The finger actuator 121, via its telescopic end, pushes the pressing link 122, causing the friction finger 111 to press downward around the pivot point of the fixed link 124 until the fingertip contacts the screen surface. The pressing force can be controlled by adjusting the finger actuator 121. The movable actuator 231 drives the gear 232 to engage with the rack 34, driving the slider 22 to slide horizontally along the guide rail 33, causing the wear simulation assembly 1 mounted on the movable beam 21 to reciprocate and rub against the surface of the touch screen 4. The pump 131 then delivers a pre-disposed sebum-like mixed liquid (e.g., a complex of squalene, triglycerides, beeswax, and saline) from the reservoir 132 to the liquid reservoir 112. The liquid then evenly seeps out through micro-outlets 113 distributed along the fingertip, reproducing the adhesion effect of the lipid and protein components in the sebum secretions of the finger during use. The friction finger 111 slides back and forth on the screen surface. The stress generated by mechanical friction and the chemical action of the biofilm together cause gradual wear of the antibacterial coating, simulating the comprehensive wear under the scenario of multiple people and long-term use in public places.

[0034] After the preset friction time or number is reached, the device stops running and the friction finger 111 resets and detaches from the screen surface. At this time, the touch screen 4 is removed and the surface antibacterial performance is tested by microbial culture method or by optical microscopy, thereby overcoming the limitations of traditional static detection methods and providing a highly simulated test platform for the antibacterial performance of touch screens and product quality control.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0037] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A device for detecting the antifouling and antibacterial effect of a touch screen, characterized in that: include: a base assembly (3); and A wear simulation component (1), the wear simulation component (1) comprising a finger simulation structure (11) and a sebum secretion mechanism (13), the finger simulation structure (11) and the sebum secretion mechanism (13) being in communication with each other, and the sebum secretion mechanism (13) being capable of providing sebum-like secretion liquid to the finger simulation structure (11); A moving component (2) is capable of reciprocating along a base assembly (3), and the wear simulation component (1) is mounted on the moving component (2) to perform friction simulation when the wear simulation component (1) contacts a touch screen.

2. The antifouling and antibacterial effect detection device for a touch screen according to claim 1, characterized in that: The finger simulation structure (11) comprises a friction finger (111), wherein the friction finger (111) has a liquid storage cavity (112), and the friction finger (111) is connected to the sebum secretion mechanism (13) via a liquid inlet (114); The friction finger (111) is provided with a liquid outlet (113), which is in communication with the liquid storage cavity (112) and is used for leaking sebum liquid.

3. The antifouling and antibacterial effect detection device for a touch screen according to claim 2, characterized in that: The sebum secretion mechanism (13) comprises a pump body (131) and a liquid storage tank (132), wherein the liquid storage tank (132) is fixed on the moving component (2); The output end of the pump body (131) is connected to the liquid inlet (114), and the input end of the pump body (131) is connected to the interior of the liquid storage tank (132).

4. The antifouling and antibacterial effect detection device for a touch screen according to claim 3, characterized in that: The moving assembly (2) comprises a moving beam (21), a slider (22) and a moving member (23); two groups of sliders (22) are fixed at both ends of the moving beam (21); and the moving member (23) is provided on one group of sliders (22); The wear simulation component (1) is fixedly mounted on the moving beam (21).

5. The antifouling and antibacterial effect detection device for a touch screen according to claim 4, characterized in that: The wear simulation component (1) further includes a driving structure (12), wherein the driving structure (12) is connected to the finger simulation structure (11) and is used to drive the finger simulation structure (11) to move; The driving structure (12) comprises a fixing frame (123) fixed on the moving beam (21) and a finger driving member (121); a pressing link (122) is provided between the telescopic end of the finger driving member (121) and the friction finger (111); and two ends of the pressing link (122) are rotatably connected to the finger driving member (121) and the friction finger (111), respectively. A fixed connecting rod (124) is fixed on the fixed frame (123), and the fixed connecting rod (124) is rotatably connected to the friction finger (111).

6. The antifouling and antibacterial effect detection device for a touch screen according to claim 5, characterized in that: The base assembly (3) includes a test bench (31) for mounting a touch screen, guide members (32) are provided on both sides of the test bench (31), and guide rails (33) are fixed on the guide members (32); The slider (22) slides back and forth on the guide rail (33).

7. The antifouling and antibacterial effect detection device for a touch screen according to claim 6, characterized in that: The moving member (23) comprises a moving driving member (231) and a gear (232), wherein the gear (232) is fixed to the output end of the moving driving member (231).

8. The antifouling and antibacterial effect detection device for a touch screen according to claim 7, characterized in that: A rack (34) arranged parallel to the guide rail (33) is fixed on one set of the guide members (32), and the gear (232) and the rack (34) are meshed with each other.

9. The antifouling and antibacterial effect detection device for a touch screen according to claim 8, characterized in that: The friction finger (111) is a finger-shaped structure, and the liquid outlet (113) is located at the fingertip of the friction finger (111).

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