CN210324151U - Capacitive touch screen is with waterproof interference device - Google Patents
Capacitive touch screen is with waterproof interference device Download PDFInfo
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- CN210324151U CN210324151U CN201921440384.3U CN201921440384U CN210324151U CN 210324151 U CN210324151 U CN 210324151U CN 201921440384 U CN201921440384 U CN 201921440384U CN 210324151 U CN210324151 U CN 210324151U
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- touch screen
- capacitive touch
- filling material
- elastic film
- bottom plate
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Abstract
The utility model discloses a waterproof interference device for a capacitive touch screen, which adopts the matching design of a rigid frame, an elastic film and a transparent bottom plate, and fills a filling material with specific requirements in a closed space enclosed by the rigid frame, the elastic film and the transparent bottom plate; according to the scheme, the filling material is filled in the closed space, and even if the external temperature suddenly drops or the temperature difference changes greatly, the mist cannot be condensed in the closed space, and the closed space still keeps transparent; in addition, when a finger or a conductor presses the elastic film, the filling material at the position is extruded to the periphery, so that the periphery is raised, the area of the concave part is small, the influence of water is small, and the product is ensured to have higher sensitivity. This scheme structural design is ingenious, and practical value is high, application scope is wide, can keep apart water outside capacitive touch screen's inductive distance, and water produces the interference to capacitive touch screen when preventing to touch, but also can use under water, has higher sensitivity, uses convenient operation, has higher popularization and practical application and worth.
Description
Technical Field
The utility model relates to a capacitive touch screen is with waterproof interference device especially uses to throwing the waterproof interference of capacitive touch screen.
Background
The capacitive touch screen is very popular, is widely applied to consumer electronics products, industrial fields, engineering equipment, military equipment and the like, and becomes an important medium for man-machine interaction. Capacitive touch screens are mainly classified into the following two categories: surface capacitive touch screens and projected capacitive touch screens; the projected capacitive touch screen is widely applied due to the advantages of high precision, multi-point touch and the like, and most consumer electronic products belong to the projected capacitive touch screen.
However, when more conductive liquid is present in the sensing range of the projected capacitive touch screen, the touch operation may be disabled, such as in the case of rain, swimming, or underwater. Waterproof covers or sleeves in the market at present are mainly used for preventing water from permeating into the mobile phone. Common waterproof cases use hard materials such as pc, and although the screen can be clearly seen underwater, the touch screen cannot be operated due to the fact that the screen cannot be deformed. The waterproof jacket is usually made of thin transparent soft materials, and after the capacitive touch screen equipment using the waterproof jacket is immersed in water, the waterproof jacket is always attached to a screen under the action of water pressure, and the touch screen cannot normally sense human hands due to the conductor characteristics of water. Common solution this moment is aerifys in soft waterproof cover, keeps apart screen and water with the air and avoids the influence of water to the touch-sensitive screen outside the touch-sensitive screen sensing distance, but another problem can be brought to the mode of aerifing, forms unevenness's lens effect between water and the air, leads to unable normal seeing clearly the screen, leads to being difficult to the accurate touch-sensitive screen of operating because of the compressibility and the mobility of air moreover.
SUMMERY OF THE UTILITY MODEL
The utility model provides a capacitive touch screen is with waterproof interference device to easily receive the problem of water interference when throwing the capacitive touch screen operation among the solution prior art.
The utility model discloses an adopt following technical scheme to realize: a waterproof interference device for a capacitive touch screen is arranged to be tightly attached to the surface of the capacitive touch screen during application, a closed space is formed by a flexible frame, and an insulating, transparent, incompressible, easily-deformable and non-flowing filling material is arranged in the closed space; the elastic film is a plane in a natural state.
Furthermore, the filling material is thixotropic liquid or elastic polymer, and the transparent bottom plate is made of rigid material.
Furthermore, the filling material is prepared by uniformly mixing dimethyl silicon oil and fumed silica thixotropic agent.
Further, the filling material is silicone gel.
Further, the filling material is PVC elastic resin.
Further, the rigid frame is made of a PC material or an aluminum alloy material.
Further, the transparent bottom plate is made of glass or polycarbonate.
Furthermore, the elastic film is made of a transparent TPU material or a transparent TPEE material.
Furthermore, the thickness of the filling material is 1mm-10mm, the thickness of the transparent bottom plate is 0.2mm-0.6mm, and the thickness of the elastic film is 0.03mm-0.3 mm.
Furthermore, the elastic film is wrapped outside the transparent bottom plate and the rigid frame, and the filling material is filled in the space surrounded by the elastic film.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
adopt the cooperation design of rigidity frame, elastic film and transparent bottom plate in this scheme to fill the filler material of specific requirement in the enclosure space that it encloses:
firstly, because the sealed space surrounded by the elastic film, the rigid frame and the transparent bottom plate is filled with the filling material without air, even if the external temperature suddenly drops or the temperature difference changes greatly, the interior of the sealed space can not be condensed with mist, and the sealed space still keeps transparent, so that the use is not influenced; in addition, the used filling material is an insulating incompressible fluid or elastomer, when a finger or a conductor presses the elastic membrane, the filling material at the position is repelled to the periphery, so that the periphery is raised, therefore, the area of the concave part is smaller, the influence of water is smaller, and the sensitivity is higher;
in addition, the waterproof interference device provided by the scheme binds the touch screen and the protection device and then is arranged in the waterproof bag together, so that redundant air is removed, and the projected capacitive touch screen can be effectively operated underwater, because the filled material is incompressible, easily deformed, transparent, insulating and non-flowing substances, the volume of the filled material cannot be changed due to the change of external water pressure or air pressure, and the operation cannot be influenced by touch;
in a word, this scheme structural design is ingenious, and practical value is high, application scope is wide, can keep apart water outside capacitive touch screen's inductive distance, and water produces the interference to capacitive touch screen when preventing to touch, can also use under water, all has higher sensitivity, uses convenient operation, has higher popularization and practical application and worth.
Drawings
Fig. 1 is a schematic diagram of an explosion structure of a waterproof interference device according to an embodiment of the present invention cooperating with an electronic device;
fig. 2 is a schematic view of the overall structure of the interference-preventing device according to the embodiment of the present invention after being mounted on an electronic device;
fig. 3 is a schematic structural diagram of the interference preventing apparatus and the electronic device according to the embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of FIG. 2;
fig. 5 is a schematic view of the sensing principle of the interference suppression device according to the embodiment of the present invention.
Detailed Description
In order to clearly understand the above objects and advantages of the present invention, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings:
as shown in fig. 1-4, the waterproof interference device for a capacitive touch screen provided in the present disclosure includes an elastic film 1, a filling material 2, a rigid frame 3 and a transparent bottom plate 4, and in a specific application, the transparent bottom plate and the rigid frame can be wrapped by the elastic film, in this embodiment, the transparent bottom plate 4 is fixed on one side of the rigid frame 3, the elastic film 1 is fixed on the other side of the rigid frame 3, the elastic film 1 is a plane in a free state, and the filling material 2 is filled in a closed space surrounded by the transparent bottom plate 4, the rigid frame and the elastic film, the filling material 2 is an insulating, transparent, incompressible, easily deformable and non-flowable substance, and may adopt a thixotropic liquid and an elastic polymer; the transparent bottom plate 4 is rigid and transparent, and the thickness of the transparent bottom plate is smaller than the induction distance of the capacitive screen; when the device is used, the transparent bottom plate of the device is abutted against the surface of the capacitive touch screen, and as shown in fig. 2, the transparent bottom plate is fixed at the outer frame of the electronic equipment to bind the outer frame and the equipment of the capacitive touch screen.
As shown in fig. 5, L1 is the thickness of the elastic film, L2 is the thickness of the filling material, L3 is the thickness of the transparent substrate, and the maximum sensing distance of the capacitive touch screen is d, then the thickness of the filling material L2< d, the thickness of the transparent substrate L3< d, and the thickness of the elastic film L1< d, when the capacitive touch screen is in a flat state without operation (when the surface is not deformed), L1+ L2+ L3> d, the external conductive liquid will not affect the screen. When in an operating state, the distance D < D between the pressing point B and the touch screen is smaller than the distance D < D, that is, when a finger or a conductor presses a part B, the position will sink, that is, in the range of L1+ L2+ L3< D, the capacitive touch screen can sense the touch operation at the position B, and the other positions are still larger than the sensing range of the capacitive touch screen.
In embodiment 1, the structure and the principle design of the waterproof interference device are described in detail by taking a mobile phone as an example, and of course, a specific application object of the waterproof interference device may be a flat panel or an electronic device with a capacitive touch screen in some other fields such as industry.
In the embodiment, the filling material is prepared by uniformly mixing dimethyl silicone oil and a fumed silica thixotropic agent, and the PC frame has a depth of 5mm, the transparent glass bottom plate has a thickness of 0.5mm, and the transparent TPU elastic film has a thickness of 0.1 mm;
the transparent bottom plate is adhered to one end of the rigid frame, the transparent filling material is filled in a groove formed by the transparent bottom plate and the rigid frame, the TPU elastic film is adhered to the other side of the rigid frame, and the filling material is sealed in a closed space surrounded by the bottom plate, the rigid frame and the film. When the device is used, the transparent bottom plate of the device is abutted against the surface of the capacitive touch screen and is fixed at the outer frame of the mobile phone by the elastic bandage (or fixed by waterproof glue or other modes), the rigid outer frame and the capacitive touch screen are bound, in order to be used underwater, the bound assembly can be placed into a transparent soft waterproof sleeve with the thickness of 0.1mm to discharge air and then sealed, and the device can be used under the condition that the surface of the projection capacitive touch screen with the sensing distance of more than or equal to 0.7mm is wet.
The second embodiment is different from the first embodiment in that in the first embodiment, the insulating organic silicon gel is selected as a filling material, the rigid frame is made of an aluminum alloy material and has a depth of 3mm, the transparent bottom plate is made of polycarbonate and has a thickness of 0.6mm, and the transparent TPEE elastic film has a thickness of 0.05 mm;
one end of the transparent bottom plate is bonded with the rigid frame and is sealed, the organic silicon gel is filled in a groove formed by the transparent bottom plate and the rigid frame, the TPEE elastic film is tightly pressed at the other end of the aluminum alloy frame by an aluminum alloy pressing ring and is fixed and sealed by screws, and the filling material is sealed in a sealed space surrounded by the bottom plate, the rigid frame and the film. When the device is used, the transparent bottom plate of the device is tightly close to the surface of the capacitive touch screen, and is fixed at the outer frame of the mobile phone or the electronic equipment by an elastic bandage or other modes to bind the outer frame and the equipment of the capacitive touch screen. For underwater use, the bound assembly can be placed into a transparent soft waterproof sleeve with the thickness of 0.1mm to be sealed after air is exhausted. The device can be used for sensing the condition that water exists on the surface of the projected capacitive touch screen with the distance of more than or equal to 0.75 mm.
The third embodiment is different from the embodiment 2 in that 3 parts of transparent PVC resin and 7 parts of DOP plasticizer are heated, stirred and mixed uniformly to form PVC elastic resin as a filling material, the depth of an aluminum alloy frame is 3mm, the thickness of a transparent glass bottom plate is 0.6mm, and the thickness of a transparent TPU elastic film is 0.03 mm;
one end of the bottom plate bonding frame is closed, PVC elastic resin liquid is filled in a groove formed by the transparent bottom plate and the rigid frame when the bottom plate bonding frame is hot, after the bottom plate bonding frame is cooled, the TPU elastic film is tightly pressed at the other end of the aluminum alloy frame by an aluminum alloy pressing ring and is fixed and sealed by screws, and the filling material is sealed in a closed space surrounded by the bottom plate, the rigid frame and the film. When the device is used, the transparent bottom plate of the device is tightly close to the surface of the capacitive touch screen, and the transparent bottom plate is fixed at the outer frame by the elastic bandage to bind the outer frame and the equipment of the capacitive touch screen. And (4) placing the bound assembly into a transparent soft waterproof sleeve with the thickness of 0.2mm, exhausting air and sealing. The device can be used for sensing the condition that water exists on the surface of the projected capacitive touch screen with the distance more than or equal to 0.83 mm.
In addition, in order to facilitate the installation of the waterproof interference device on the touch screen, an outer edge handle 6 is further arranged on the side edge of the rigid frame.
Adopt the cooperation design of rigidity frame, elastic film and transparent bottom plate in this scheme to fill the filler material of specific requirement in the enclosure space that it encloses, can keep apart water outside capacitive touch screen's inductive distance, water produced interference to capacitive touch screen when preventing to touch: because the sealed space surrounded by the elastic film, the rigid frame and the transparent bottom plate is filled with the filling material without air, even if the external temperature suddenly drops or the temperature difference changes greatly, the interior of the sealed space can not be condensed with mist, and the sealed space still keeps transparent, so that the use is not influenced;
in addition, the used filling material is an insulating incompressible fluid or an elastomer, and the filling material is limited to thixotropic liquid or gel in the scheme, so that the natural and flat effect of the surface is ensured when no operation is performed; on the other hand, when a finger or a conductor presses the elastic film, the filling material at the position is repelled to the periphery, so that the periphery generates a bulge, therefore, the area of the concave part is smaller, the influence of water is smaller, and the sensitivity is higher;
in addition, the waterproof interference device provided by the scheme binds the touch screen and the protection device and then is packaged into the waterproof bag together, so that redundant air is eliminated, and the projected capacitive touch screen can be effectively operated underwater.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The waterproof interference device for the capacitive touch screen is characterized by comprising a rigid frame, a transparent bottom plate and an elastic film, wherein the transparent bottom plate and the elastic film are arranged on two sides of the rigid frame and form a closed space together with the rigid frame, an insulating, transparent, incompressible, easily-deformable and non-flowing filling material is arranged in the closed space, and the elastic film is a plane in a natural state.
2. The waterproof interference device for the capacitive touch screen according to claim 1, wherein: the filling material adopts thixotropic liquid or elastic polymer.
3. The waterproof interference device for the capacitive touch screen according to claim 2, wherein: the filling material is prepared by uniformly mixing dimethyl silicone oil and fumed silica thixotropic agent.
4. The waterproof interference device for the capacitive touch screen according to claim 2, wherein: the filling material is silicone gel.
5. The waterproof interference device for the capacitive touch screen according to claim 2, wherein: the filling material is PVC elastic resin.
6. The waterproof interference device for the capacitive touch screen according to any one of claims 3 to 5, wherein: the rigid frame is made of PC materials or aluminum alloy materials.
7. The waterproof interference device for the capacitive touch screen according to any one of claims 3 to 5, wherein: the transparent bottom plate is made of glass or polycarbonate.
8. The waterproof interference device for the capacitive touch screen according to any one of claims 3 to 5, wherein: the elastic film is made of a transparent TPU material or a transparent TPEE material.
9. The waterproof interference device for the capacitive touch screen according to claim 1, wherein: the thickness of the filling material is 1mm-10mm, the thickness of the transparent bottom plate is 0.2mm-0.6mm, and the thickness of the elastic film is 0.03mm-0.3 mm.
10. The waterproof interference device for the capacitive touch screen according to claim 1, wherein: the elastic film wraps the outer sides of the transparent bottom plate and the rigid frame, and the filling material is filled in the space surrounded by the elastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440384.3U CN210324151U (en) | 2019-09-02 | 2019-09-02 | Capacitive touch screen is with waterproof interference device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921440384.3U CN210324151U (en) | 2019-09-02 | 2019-09-02 | Capacitive touch screen is with waterproof interference device |
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| CN210324151U true CN210324151U (en) | 2020-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113508324A (en) * | 2020-05-29 | 2021-10-15 | 深圳市大疆创新科技有限公司 | Optical system, precision device and electronic apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113508324A (en) * | 2020-05-29 | 2021-10-15 | 深圳市大疆创新科技有限公司 | Optical system, precision device and electronic apparatus |
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