Waterproof capacitive touch screen

Abstract

The utility model discloses a waterproof capacitive touch screen in the technical field of touch screens, which comprises an outer shell and a waterproof coating screen, the edge of the upper end face of the waterproof coating screen is provided with a first sealant, and the edge of the lower end face of the waterproof coating screen is provided with a second sealant; a plurality of positioning rods are arranged on the side edge of the outer shell, two of the positioning rods are sleeved with elastic pieces, a pressing plate is attached to one side of each elastic piece, the portion between the pressing plate and the second sealant is filled with protective glue, and the elastic pieces are located between the protective glue; when the waterproof coating screen is used, the waterproof coating screen is adhered and installed through the first sealant and the second sealant, the sealing performance and the waterproof performance of the waterproof coating screen are improved, the waterproof coating screen is supported by the elastic plate through the positioning rod, and the waterproof performance between the waterproof coating screen and the outer shell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch screen technical field, especially relate to a waterproof capacitive touch screen. BACKGROUND

[0002] Capacitive touch screen technology is working by using the current induction of human body. Capacitive touch screen is a four-layer composite glass screen, the inner surface and interlayer of glass screen are coated with an ITO layer, the outermost layer is a thin layer of silica glass protective layer, the interlayer ITO coating layer is used as the working surface, four electrodes are led out on the four corners, and the inner layer ITO is used as a shielding layer to ensure a good working environment. When the finger touches the metal layer, a coupling capacitor is formed between the user and the touch screen surface due to the human body electric field, and for high-frequency current, the capacitor is a direct conductor, so the finger absorbs a very small current from the contact point. The current flows out from the electrodes on the four corners of the touch screen, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners, and the controller obtains the position of the touch point by accurately calculating the proportion of the four currents.

[0003] With the popularity of intelligent devices and touch interfaces, more and more devices need to operate in complex environments, and these devices may be exposed to humid, rainy, and sweaty environments. In order to improve the reliability of the touch screen in these environments, waterproof capacitive touch screen has become an inevitable development trend.

[0004] The existing patent number CN217404851U discloses a waterproof capacitive touch screen, a shell and a touch screen body, the touch screen body is located in the shell, the inner bottom of the shell is fixedly connected with an inner support column, and the top of the inner support column is fixedly connected with a rubber ring block. The waterproof capacitive touch screen is provided with a sealing ring, a carbon particle layer, a heating resistance wire and an electrode sheet, the touch screen body is installed in the shell, and the pressing plate is fixed at the top of the shell, so that the lower surface of the pressing plate is tightly combined with the edge of the upper surface of the touch screen body. The sealing ring enhances the sealing property of the connection between the touch screen body and the shell, effectively prevents water from entering the inside of the touch screen body from the edge of the touch screen body, and the carbon particle layer can absorb water vapor when the water vapor enters the inside of the touch screen body.

[0005] However, the above-mentioned technology supports and fixes the touch screen body through the inner support column, the threaded column and the rubber ring block, which is easy to cause the touch screen body to be separated from the shell after long-time use, and water is easy to enter. In addition, the heating resistance wire is used for drying, which is easy to cause the touch screen body to malfunction due to temperature and cannot be used. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model provides a waterproof capacitive touch screen.

[0007] The utility model discloses a waterproof capacitive touch screen, including the shell and waterproof coating screen, the upper end surface edge of waterproof coating screen is fixed with first sealant, the lower end surface edge of waterproof coating screen is fixed with second sealant,

[0008] The side of the shell is fixed with a plurality of positioning rods, two of the plurality of positioning rods are sleeved with elastic sheets, one side of the elastic sheet is attached to a pressing plate, the pressing plate and the second sealant are filled with protective glue, and the elastic sheet is between the protective glue.

[0009] Specifically, the shell, the waterproof coating screen, the first sealant, the second sealant, the protective glue, and the pressing plate are jointly screwed with an internal hexagonal bolt.

[0010] Specifically, the upper end surface of the waterproof coating screen is adhered to the inner wall of the shell through the first sealant, and the second sealant and the protective glue are adhered and connected.

[0011] Specifically, the waterproof coating screen is inlaid between the elastic sheet and the shell through the first sealant and the second sealant.

[0012] Specifically, the pressing plate is fixedly connected with a support plate, the upper end surface of the support plate is attached to a heat sink, and the heat sink is attached to the lower end surface of the waterproof coating screen.

[0013] Specifically, one side of the protective glue is provided with a sealant plate, and the sealant plate is integrally formed with the second sealant.

[0014] Specifically, the four edges of the shell are respectively provided with three elastic sheets, and the three elastic sheets are arranged at equal intervals.

[0015] Specifically, the two ends of the support plate are fixedly connected to the lower end surface of the pressing plate, and the middle part of the support plate is recessed and embedded and attached to the inner surface of the waterproof coating screen.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] In use, the waterproof coating screen is installed by the first sealant and the second sealant, the sealing property of the waterproof coating screen is improved, the waterproof property is improved, the surface of the waterproof coating screen is coated with a waterproof coating, the contact between water droplets and the screen surface is reduced, and the influence of water droplets on capacitive sensing is reduced.

[0018] And the inner side of the shell is provided with a positioning rod and an elastic plate, the waterproof coating screen is supported by the positioning rod on the elastic plate, that is, the waterproof coating screen is pushed by the elastic plate, so that the waterproof coating screen can be tightly attached to the shell, improving the waterproofness between the waterproof coating screen and the shell.

[0019] And the protective glue is arranged between the pressing plate and the waterproof coating screen, and the elastic sheet is embedded in the protective glue, so that the waterproof coating screen is not damaged when the elastic sheet supports and pushes the waterproof coating screen, and the waterproof coating screen is safely protected. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0021] Figure 1 is a top view structure schematic diagram of the present application;

[0022] Figure 2 is a bottom view structure schematic diagram of the present application;

[0023] Figure 3 is a side view of the internal structure of the present application;

[0024] Figure 4 is a bottom view of the internal structure of the present application.

[0025] In the figure: 1, shell; 2, waterproof coating screen; 3, first sealing glue; 4, second sealing glue; 5, protective glue; 6, positioning rod; 7, elastic sheet; 8, heat sink; 9, sealing glue plate; 10, pressing plate; 11, supporting plate; 12, inner hexagonal bolt. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] As Figures 1-4The waterproof capacitive touch screen shown comprises an outer shell 1 and a waterproof coating screen 2, the upper end face edge of the waterproof coating screen 2 is fixedly provided with a first sealing glue 3, and the lower end face edge of the waterproof coating screen 2 is fixedly provided with a second sealing glue 4;

[0028] A plurality of positioning rods 6 are fixedly arranged on the side edges of the outer shell 1, two of the plurality of positioning rods 6 are sleeved with elastic sheets 7, one side of each elastic sheet 7 is attached with a pressing plate 10, the pressing plate 10 and the second sealing glue 4 are filled with a protective glue 5, and the elastic sheets 7 are between the protective glue 5.

[0029] In the embodiment, preferably, the outer shell 1, the waterproof coating screen 2, the first sealing glue 3, the second sealing glue 4, the protective glue 5 and the pressing plate 10 are jointly and threadedly connected with an internal hexagonal bolt 12;

[0030] It should be noted that the internal hexagonal bolt 12 is arranged to facilitate the connection and installation of the outer shell 1, the waterproof coating screen 2, the first sealing glue 3, the second sealing glue 4, the protective glue 5 and the pressing plate 10, to maintain the stability of the installation connection of the waterproof coating screen 2, and to facilitate the installation and connection by using the internal hexagonal bolt 12.

[0031] In the embodiment, preferably, the upper end face of the waterproof coating screen 2 is attached to the inner wall of the outer shell 1 through the first sealing glue 3, and the second sealing glue 4 and the protective glue 5 are attached and connected;

[0032] It should be noted that the first sealing glue 3 and the second sealing glue 4 are arranged to achieve the attachment and installation of the waterproof coating screen 2, to maintain the tightness of the connection, and to improve the sealing and waterproof performance of the waterproof coating screen 2.

[0033] In the embodiment, preferably, the waterproof coating screen 2 is inlaid between the elastic sheets 7 and the outer shell 1 through the first sealing glue 3 and the second sealing glue 4;

[0034] It should be noted that the first sealing glue 3 and the second sealing glue 4 are arranged to facilitate the inlaying of the waterproof coating screen 2 between the elastic sheets 7 and the outer shell 1, to improve the sealing and waterproof performance, and to improve the safety protection of the waterproof coating screen 2 to prevent extrusion damage.

[0035] In the embodiment, preferably, the pressing plate 10 is fixedly connected with a support plate 11, the upper end face of the support plate 11 is attached with a heat sink 8, and the heat sink 8 is attached to the lower end face of the waterproof coating screen 2;

[0036] It should be noted that the support plate 11 is arranged to support the middle part of the waterproof coating screen 2 to achieve safety protection, and the heat sink 8 is arranged to achieve heat dissipation treatment of the waterproof coating screen 2, to reduce the temperature of the waterproof coating screen 2 and to improve the stable operation of the waterproof coating screen 2.

[0037] In this embodiment, preferably, one side of the protective glue 5 is provided with a sealing rubber plate 9, and the sealing rubber plate 9 is integrally formed with the second sealing rubber 4;

[0038] It should be noted that the sealing rubber plate 9 is provided to protect the supporting plate 11 and facilitate the protection of the two end edges of the supporting plate 11, thereby reducing the damage to the equipment, and the sealing rubber plate 9 is also provided to set the model for pouring the protective glue 5.

[0039] In this embodiment, preferably, three elastic sheets 7 are arranged on each side of the outer shell 1, and the three elastic sheets 7 are arranged at equal intervals.

[0040] It should be noted that the equal interval arrangement of the three elastic sheets 7 can improve the support of the waterproof coating screen 2 and maintain the uniformity of the stress of the waterproof coating screen 2, thereby preventing uneven stress and causing the waterproof coating screen 2 to break.

[0041] In this embodiment, preferably, the two ends of the supporting plate 11 are fixedly connected to the lower end surface of the pressing plate 10, and the middle part of the supporting plate 11 is embedded and connected to the inner surface of the waterproof coating screen 2.

[0042] It should be noted that the supporting plate 11 is fixedly connected to the pressing plate 10 to maintain the size of the support, so that the middle part of the supporting plate 11 can be attached to the middle part of the waterproof coating screen 2, thereby achieving protection and support of the middle part of the waterproof coating screen 2.

[0043] The specific operation process of the present application is as follows:

[0044] First, the first sealing rubber 3 and the second sealing rubber 4 and the sealing rubber plate 9 are applied to the edges of the two end surfaces of the waterproof coating screen 2, and then the first sealing rubber 3 is heated and softened before the waterproof coating screen 2 is attached to the outer shell 1, so that the first sealing rubber 3 can be attached to the outer shell 1. Then, the elastic sheet 7 is installed on the positioning rod 6, and the protective glue 5 is poured, and the second sealing rubber 4 and the sealing rubber plate 9 are heated and softened before pouring the protective glue 5, so that the protective glue 5 forms an integral whole with the second sealing rubber 4 and the sealing rubber plate 9. Then, the pressing plate 10 is installed, and the heat dissipation sheet 8 is attached to the supporting plate 11 on the pressing plate 10, and the heat dissipation sheet 8 is provided to achieve heat dissipation treatment of the waterproof coating screen 2, reduce the temperature of the waterproof coating screen 2, and improve the stability of the waterproof coating screen 2. Then, the inner hexagonal bolt 12 is provided to facilitate the connection and installation of the outer shell 1, the waterproof coating screen 2, the first sealing rubber 3, the second sealing rubber 4, the protective glue 5 and the pressing plate 10, and the stability of the waterproof coating screen 2 is maintained.

[0045] The above description of the embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A waterproof capacitive touch screen, characterized by, Including outer shell (1) and waterproof coating screen (2), the upper end surface edge of waterproof coating screen (2) is fixedly provided with first sealant (3), the lower end surface edge of waterproof coating screen (2) is fixedly provided with second sealant (4); The side of the outer shell (1) is fixedly provided with a plurality of positioning rods (6), two of the plurality of positioning rods (6) are sleeved with elastic sheets (7), one side of the elastic sheet (7) is attached with a pressing plate (10), the pressing plate (10) and the second sealant (4) are filled with protective glue (5), and the elastic sheet (7) is between the protective glue (5).

2. The waterproof capacitive touch screen according to claim 1, wherein: The outer shell (1), the waterproof coating screen (2), the first sealant (3), the second sealant (4), the protective glue (5) and the pressing plate (10) are jointly screwed with an internal hexagonal bolt (12).

3. The waterproof capacitive touch screen according to claim 1, wherein: The upper end surface of the waterproof coating screen (2) is adhered to the inner wall of the outer shell (1) by the first sealant (3), and the second sealant (4) and the protective glue (5) are adhered and connected.

4. The waterproof capacitive touch screen according to claim 1, wherein: The waterproof coating screen (2) is inlaid between the elastic sheet (7) and the outer shell (1) by the first sealant (3) and the second sealant (4).

5. The waterproof capacitive touch screen according to claim 1, wherein: The pressing plate (10) is fixedly connected with a support plate (11), the upper end surface of the support plate (11) is attached with a cooling fin (8), and the cooling fin (8) is attached to the lower end surface of the waterproof coating screen (2).

6. The waterproof capacitive touch screen according to claim 1, wherein: One side of the protective glue (5) is provided with a sealant plate (9), and the sealant plate (9) is integrally formed with the second sealant (4).

7. The waterproof capacitive touch screen according to claim 1, wherein: Three elastic sheets (7) are arranged on the four edges of the outer shell (1) respectively, and the three elastic sheets (7) are arranged at equal intervals.

8. The waterproof capacitive touch screen according to claim 5, wherein: The both ends of the support plate (11) are fixedly connected to the lower end surface of the pressing plate (10), and the middle part of the support plate (11) is recessed and embedded with the inner surface of the waterproof coating screen (2).

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