Projection type capacitive multi-point touch screen

Abstract

The utility model provides a projection type capacitance multi-point touch screen which comprises a shell, a first rotary knob is arranged on the rear portion of a telescopic rod, a rotary long rod is arranged on the side edge of a second rotary knob, a scraping plate is arranged at the bottom of screen shielding rolled cloth, protective films are arranged at the upper end and the lower end of the touch screen, and shock pads are arranged at the left end and the right end of the side edge of the touch screen. According to the projection type capacitive multi-point touch screen, the telescopic rod is installed at the bottom of the shell, when the capacitive touch screen is used, a user can adjust the height of the touch screen by twisting a first rotary knob, the user can adjust the height of the touch screen according to use requirements through up-and-down stretching and retracting of the telescopic rod, and therefore the user can use the touch screen more conveniently; and after the height of the touch screen is adjusted, the user twists the first knob, the adjusted height is fixed by twisting the first knob, and meanwhile, the touch screen is stabilized through the bottom plate, so that the touch screen can stably stand on the ground or a table top, and the use requirement of the user is met.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screens, in particular to a projected capacitive multi-point touch screen. Background Art

[0002] Touch screen, also known as touch screen or touch panel, is an inductive liquid crystal display device that can receive input signals such as contacts. When the graphic button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to the pre-programmed program, which can be used to replace the mechanical button panel and create vivid audio and video effects through the liquid crystal display screen. As the latest computer input device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction. It gives multimedia a new look and is a very attractive new multimedia interactive device. It is mainly used in public information query, office, industrial control, military command, electronic games, song and food ordering, multimedia teaching, real estate pre-sale, etc.

[0003] In the existing touch screen body used for display and control, dust is easily adsorbed on the surface of the touch screen, which brings unnecessary troubles, and the dust adsorbed on the touch screen enters the inside of the touch screen. At the same time, the scraper is easy to damage the touch screen when scraping the touch screen, thereby affecting the use of the touch screen and greatly reducing the service life of the touch screen. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings in the prior art, the present application aims to provide a projected capacitive multi-point touch screen, including a shell, a telescopic rod is provided at the rear of the shell, a first knob is provided at the rear of the telescopic rod, a bottom plate is provided at the bottom of the telescopic rod, a second knob is provided on the side of the shell, a rotating long rod is provided on the side of the second knob, a screen shielding roll cloth is provided on the side of the rotating long rod, a scraper is provided at the bottom of the screen shielding roll cloth, a touch screen is provided inside the shell, protective films are provided at the upper and lower ends of the touch screen, a polarizing plate is provided at the bottom of the protective film, a color filter film is provided at the bottom of the polarizing plate, shock-absorbing pads are provided on the left and right ends of the touch screen, and heat dissipation holes are provided at the rear of the touch screen.

[0005] Preferably, the telescopic rod is movably mounted on the back of the shell, the first knob is movably mounted on the back of the telescopic rod, and the bottom plate is mounted on the lower surface of the telescopic rod.

[0006] Preferably, the second knob is movably mounted on one side of the shell, the rotating long rod is movably mounted on one side of the second knob, the screen shielding cloth is movably mounted on one side of the rotating long rod, and the scraper is movably mounted on the lower surface of the screen shielding cloth.

[0007] Preferably, the touch screen is mounted on the inner wall of the housing, and the protective film is symmetrically mounted on the upper and lower ends of the touch screen.

[0008] Preferably, the polarizing plate is mounted on the lower surface of the protective film, the color filter is mounted on the lower surface of the polarizing plate, and the shock absorbing pads are symmetrically mounted on the left and right ends of the side of the touch screen.

[0009] Preferably, the heat dissipation holes are opened on the back of the touch screen.

[0010] Beneficial effects:

[0011] 1. The projected capacitive multi-point touch screen achieves the goal of allowing the user to twist the second knob to move the screen shielding cloth from the rotating long rod through the installation of the second knob. When the user twists the second knob to move the screen shielding cloth downward, the scraper moves downward accordingly, and the dust on the touch screen is scraped off by the downward movement of the scraper. After the screen shielding cloth is covered on the touch screen, the screen shielding cloth prevents dust from being adsorbed on the surface of the touch screen to avoid affecting the use of the touch screen. At the same time, the user twists the second knob to move the screen shielding cloth upward. When the screen shielding cloth moves upward, the rotating long rod rotates with the twisting of the second knob, thereby rolling the screen shielding cloth into the rotating long rod, which is convenient for the user to retract the screen shielding cloth. The scraper also moves upward as the screen shielding cloth moves upward, and the capacitive touch screen is effectively protected by the screen shielding cloth and the scraper.

[0012] 2. The projected capacitive multi-point touch screen is installed at the upper and lower ends of the touch screen through the protective film, so as to prevent the scraper from scratching the touch screen and causing damage to the touch screen. At the same time, the protective film prevents dust adsorbed on the touch screen from entering the inside of the touch screen, avoiding affecting the service life of the touch screen, thereby improving the use effect of the touch screen through the protective film. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the touch screen of the utility model;

[0015] Figure 2 This is a schematic diagram of the front structure of the touch screen of the utility model;

[0016] Figure 3 This is a schematic diagram of the rear view structure of the touch screen of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the touch screen of the utility model;

[0018] Figure 5 It is a schematic diagram of the enlarged structure of the screen shielding roll cloth of the utility model.

[0019] In the figure: 1. shell; 2. telescopic rod; 3. first knob; 301. touch screen; 4. bottom plate; 401. protective film; 402. polarizing plate; 403. color filter film; 404. shock-absorbing pad; 5. second knob; 6. rotating long rod; 7. screen shielding cloth; 8. scraper; 9. heat dissipation hole. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0021] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0022] See also Figure 1-5 A projected capacitive multi-point touch screen includes a shell 1, a telescopic rod 2 is provided at the rear of the shell 1, a first knob 3 is provided at the rear of the telescopic rod 2, a bottom plate 4 is provided at the bottom of the telescopic rod 2, a second knob 5 is provided at the side of the shell 1, a rotating long rod 6 is provided at the side of the second knob 5, a screen shielding roll cloth 7 is provided at the side of the rotating long rod 6, a scraper 8 is provided at the bottom of the screen shielding roll cloth 7, a touch screen 301 is provided inside the shell 1, protective films 401 are provided at the upper and lower ends of the touch screen 301, a polarizing plate 402 is provided at the bottom of the protective film 401, a color filter film 403 is provided at the bottom of the polarizing plate 402, shock-absorbing pads 404 are provided at the left and right ends of the side of the touch screen 301, and a heat dissipation hole 9 is provided at the rear of the touch screen 301.

[0023] Among them, the telescopic rod 2 is installed at the bottom of the shell 1. When using the capacitive touch screen 301, the user adjusts the height of the touch screen 301 by twisting the first knob 3. By extending and retracting the telescopic rod 2 up and down, the user can adjust the height of the touch screen 301 according to the use requirements, so that the user can use the touch screen 301 more conveniently. After adjusting the height of the touch screen 301, the user twists the first knob 3 again to fix the adjusted height by twisting the first knob 3. At the same time, the touch screen 301 is stabilized by the bottom plate 4, so that the touch screen 301 can stand firmly on the ground or the desktop, meeting the use requirements of the user.

[0024] Among them, through the installation of the second knob 5, the user twists the second knob 5 to move the screen shielding cloth 7 from the rotating long rod 6. When the user twists the second knob 5 to move the screen shielding cloth 7 downward, the scraper 8 moves downward accordingly. The dust on the touch screen 301 is scraped off by the downward movement of the scraper 8. After the screen shielding cloth 7 is covered with the touch screen 301, the screen shielding cloth 7 is used to prevent dust from being adsorbed on the surface of the touch screen 301, thereby avoiding affecting the use of the touch screen 301. At the same time, the user twists the second knob 5 to move the screen shielding cloth 7 upward. When the screen shielding cloth 7 moves upward, the rotating long rod 6 rotates with the twisting of the second knob 5, thereby rolling the screen shielding cloth 7 into the rotating long rod 6, which is convenient for the user to retract the screen shielding cloth 7. By the upward movement of the screen shielding cloth 7, the scraper 8 also moves upward accordingly. The capacitive touch screen 301 is effectively protected by the screen shielding cloth 7 and the scraper 8.

[0025] Among them, the protective film 401 is installed on the upper and lower ends of the touch screen 301. The protective film 401 prevents the scraper 8 from damaging the touch screen 301 when scraping the touch screen 301. At the same time, the protective film 401 prevents dust adsorbed on the touch screen 301 from entering the inside of the touch screen 301, avoiding affecting the service life of the touch screen 301. Therefore, the protective film 401 improves the use effect of the touch screen 301.

[0026] Among them, by installing the polarizing plate 402 and the color filter film 403, the transmittance and viewing angle range of the image displayed on the touch screen 301 are improved, and the touch screen 301 is prevented from being affected by the environment and producing reflections when in use, so that the touch screen 301 can better display graphics or images on the screen, and at the same time prevent interference from light that causes the user to be unable to view graphics or images. The shock-absorbing pad 404 is used to prevent the touch screen 301 from being damaged when it is subjected to impact force, and the shock-absorbing pad 404 effectively reduces the strength of the impact force on the touch screen 301.

[0027] Among them, through the installation of the heat dissipation holes 9, the heat dissipation holes 9 can prevent the touch screen 301 from being used for a long time, which will cause a large amount of heat to be generated in the touch screen 301, thereby affecting the service life of the touch screen 301 and reducing the use effect of the touch screen 301. The heat generated in the touch screen 301 can be effectively dissipated through the heat dissipation holes 9, thereby greatly improving the service life of the touch screen 301.

[0028] When in use, the second knob 5 is installed, and the user twists the second knob 5 to move the screen shielding cloth 7 from the rotating long rod 6. When the user twists the second knob 5 to move the screen shielding cloth 7 downward, the scraper 8 moves downward accordingly, and the dust on the touch screen 301 is scraped off by the downward movement of the scraper 8. After the screen shielding cloth 7 is covered on the touch screen 301, the screen shielding cloth 7 prevents dust from being adsorbed on the surface of the touch screen 301, thereby avoiding affecting the use of the touch screen 301. At the same time, the user twists the second knob 5 to move the screen shielding cloth 7 upward. When the screen shielding cloth 7 moves upward, the rotating long rod 6 rotates along with the twisting of the second knob 5. , thereby rolling the screen shielding cloth 7 into the rotating long rod 6, making it convenient for the user to retract the screen shielding cloth 7. As the screen shielding cloth 7 moves upward, the scraper 8 also moves upward. The capacitive touch screen 301 is effectively protected by the screen shielding cloth 7 and the scraper 8. The protective film 401 is installed at the upper and lower ends of the touch screen 301. The protective film 401 prevents the scraper 8 from damaging the touch screen 301 when scraping the touch screen 301. At the same time, the protective film 401 prevents dust adsorbed on the touch screen 301 from entering the interior of the touch screen 301, thereby avoiding affecting the service life of the touch screen 301. The protective film 401 improves the use effect of the touch screen 301.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A projected capacitive multi-touch screen, comprising a housing (1), Features: The shell (1) is provided with a telescopic rod (2) at the rear, a first knob (3) at the rear, a bottom plate (4) at the bottom of the telescopic rod (2), a second knob (5) at the side of the shell (1), a rotating long rod (6) at the side of the second knob (5), a screen shielding roll cloth (7) at the side of the rotating long rod (6), a scraper (8) at the bottom of the screen shielding roll cloth (7), a touch screen (301) at the inside of the shell (1), protective films (401) at the upper and lower ends of the touch screen (301), a polarizing plate (402) at the bottom of the protective film (401), a color filter film (403) at the bottom of the polarizing plate (402), shock-absorbing pads (404) at the left and right ends of the side of the touch screen (301), and a heat dissipation hole (9) at the rear of the touch screen (301).

2. A projected capacitive multi-touch screen according to claim 1, Features: The telescopic rod (2) is movably mounted on the back of the housing (1), the first knob (3) is movably mounted on the back of the telescopic rod (2), and the bottom plate (4) is mounted on the lower surface of the telescopic rod (2).

3. The projected capacitive multi-touch screen according to claim 1, Features: The second knob (5) is movably mounted on one side of the housing (1), the rotating long rod (6) is movably mounted on one side of the second knob (5), the screen shielding cloth (7) is movably mounted on one side of the rotating long rod (6), and the scraper (8) is movably mounted on the lower surface of the screen shielding cloth (7).

4. The projected capacitive multi-touch screen according to claim 1, Features: The touch screen (301) is mounted on the inner wall of the housing (1), and the protective film (401) is symmetrically mounted on the upper and lower ends of the touch screen (301).

5. The projected capacitive multi-touch screen according to claim 1, Features: The polarizing plate (402) is mounted on the lower surface of the protective film (401), the color filter film (403) is mounted on the lower surface of the polarizing plate (402), and the shock absorbing pad (404) is symmetrically mounted on the left and right ends of the side of the touch screen (301).

6. The projected capacitive multi-touch screen according to claim 1, Features: The heat dissipation holes (9) are provided on the back of the touch screen (301).

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