Waterproof keyboard

Abstract

The invention provides a waterproof keyboard. The waterproof keyboard comprises a substrate, a key frame, a plurality of key caps, a first adhesive layer, a plurality of second adhesive layers and a keyboard film. The key frame is arranged on the substrate, the key frame comprises a frame body and a plurality of through holes, the plurality of through holes are formed by penetrating through the frame body, and the frame body is provided with a frame body top surface. The plurality of keycaps respectively pass through the plurality of through holes, and the plurality of keycaps are respectively provided with keycap top surfaces. The first adhesive layer is arranged on the top surface of the frame body. And the plurality of second adhesive layers are respectively and correspondingly arranged on the top surfaces of the plurality of key caps. The keyboard film is arranged on the first adhesive layer and the second adhesive layers. Wherein the keyboard film directly forms at least one concave part on the top surface of the frame body through hot pressing, a plurality of convex parts are formed on the top surfaces of the plurality of key caps, the at least one concave part is attached to the top surface of the frame body through a first adhesive layer, and the plurality of convex parts are attached to the top surfaces of the plurality of key caps through a plurality of second adhesive layers.

Description

Technical Field

[0001] The present invention relates to a keyboard, and particularly to a waterproof keyboard for use with a tablet computer or a mobile information device. Background Art

[0002] A keyboard is one of the most common input devices used with a computer. During normal use of the keyboard, it is very easy for water, beverages to be overturned, or food to fall onto the keyboard, resulting in damage to the keyboard or the need for cleaning. To prevent the above situations, a detachable keyboard film has been developed on the market. However, most of the existing detachable keyboard film materials are made of rubber, silicone and other materials. Such materials are hard and inelastic, resulting in discomfort for the user's fingers and poor pressing feel during the tapping process. Moreover, since the detachable keyboard film only covers the surface of the keyboard, not only is the appearance not sharp, but it also cannot effectively fit the entire keyboard structure. There is a problem of the film sliding and falling during the tapping process, and the film perimeter does not fit the keyboard, so it still cannot effectively achieve the function of dust and water protection for the entire keyboard.

[0003] To improve the above problems, a leather case type keyboard has been developed. However, for the keyboard film materials of the existing leather case type keyboards, most of them choose textile cloth or synthetic leather. However, the above materials have a higher hardness and thickness, and the hardness and thickness of the material are positively correlated with the user's pressing feel. Therefore, if textile cloth or synthetic leather is selected, the acting force and reaction force during tapping will be relatively large, which is likely to cause fatigue in the user's fingers and the tapping feel is also poor. Moreover, when the textile cloth or synthetic leather is attached to the keyboard, due to its thickness and hardness, it cannot be flatly attached to the keyboard surface, resulting in poor sharpness of the appearance.

[0004] Therefore, how to improve the above problems is actually the focus of concern for relevant personnel in this field. In view of this, there is an urgent need for an improved waterproof keyboard. Summary of the Invention

[0005] One of the purposes of the present invention is to provide an improved waterproof keyboard.

[0006] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0007] To achieve one or part or all of the above purposes or other purposes, the present invention provides a waterproof keyboard, including: a substrate, a key frame, a plurality of keycaps, a first adhesive layer, a plurality of second adhesive layers, and a keyboard film. The key frame is disposed on the substrate. The key frame includes a frame body and a plurality of through holes formed by penetrating the frame body. The frame body has a top surface of the frame body. A plurality of keycaps respectively pass through the plurality of through holes, and the plurality of keycaps respectively have top surfaces of the keycaps. The first adhesive layer is disposed on the top surface of the frame body. The plurality of second adhesive layers are respectively disposed corresponding to the top surfaces of the plurality of keycaps. The keyboard film is disposed on the first adhesive layer and the plurality of second adhesive layers. Wherein, the keyboard film forms at least one concave portion directly at the top surface of the frame body through hot pressing, and forms a plurality of convex portions at the top surfaces of the plurality of keycaps. The at least one concave portion is attached to the top surface of the frame body through the first adhesive layer, and the plurality of convex portions are attached to the top surfaces of the plurality of keycaps through the plurality of second adhesive layers.

[0008] In an embodiment of the present invention, the above-mentioned keyboard film includes a light-transmitting layer and at least one light-shielding layer, and the light-shielding layer is combined and disposed on the upper surface of the light-transmitting layer.

[0009] In an embodiment of the present invention, the above-mentioned keyboard film further includes a light-transmitting pattern, and the light-transmitting pattern is formed by hollowing out at least one light-shielding layer.

[0010] In an embodiment of the present invention, the materials of the above-mentioned light-transmitting layer and at least one light-shielding layer are polyurethane (PU, polyurethane) or thermoplastic polyurethane (TPU, Thermoplastic polyurethane) or thermoplastic polyurethane.

[0011] In an embodiment of the present invention, the orthographic projection range of any one of the second adhesive layers is within the orthographic projection range of the corresponding through hole.

[0012] In an embodiment of the present invention, the orthographic projection of the above-mentioned through hole has a first side, a second side, a third side, and a fourth side. The first side and the third side are oppositely arranged. The second side and the fourth side are oppositely arranged. The first side is adjacent to the second side and the fourth side. The second side is adjacent to the first side and the third side. The third side is adjacent to the second side and the fourth side. The fourth side is adjacent to the first side and the third side.

[0013] In an embodiment of the present invention, the orthographic projection of the above-mentioned second adhesive layer has a first side, a second side, a third side, and a fourth side. The first side and the third side are oppositely arranged. The second side and the fourth side are oppositely arranged. The first side is adjacent to the second side and the fourth side. The second side is adjacent to the first side and the third side. The third side is adjacent to the second side and the fourth side. The fourth side is adjacent to the first side and the second side.

[0014] In an embodiment of the present invention, the first side of the orthographic projection of the perforation is close to the first side of the orthographic projection of the second adhesive layer, there is a first distance between the first side of the orthographic projection of the perforation and the first side of the orthographic projection of the second adhesive layer, the second side of the orthographic projection of the perforation is close to the second side of the orthographic projection of the second adhesive layer, there is a second distance between the second side of the orthographic projection of the perforation and the second side of the orthographic projection of the second adhesive layer, the third side of the orthographic projection of the perforation is close to the third side of the orthographic projection of the second adhesive layer, there is a third distance between the third side of the orthographic projection of the perforation and the third side of the orthographic projection of the second adhesive layer, the fourth side of the orthographic projection of the perforation is close to the fourth side of the orthographic projection of the second adhesive layer, and there is a fourth distance between the fourth side of the orthographic projection of the perforation and the fourth side of the orthographic projection of the second adhesive layer.

[0015] In an embodiment of the present invention, the above-mentioned keyboard film has a thickness greater than 0, the first distance is not less than twice the thickness, the second distance is not less than twice the thickness, the third distance is not less than twice the thickness, and the fourth distance is not less than twice the thickness.

[0016] In an embodiment of the present invention, the above-mentioned first adhesive layer and the plurality of second adhesive layers are hot melt adhesive layers.

[0017] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, is described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A and Figure 1B is an exploded view of a waterproof keyboard according to an embodiment of the present invention.

[0019] Figure 2 is a cross-sectional view of a waterproof keyboard according to an embodiment of the present invention.

[0020] Figure 3 is a schematic diagram of the orthographic projection of the perforation and the second adhesive layer according to an embodiment of the present invention.

[0021] Figure 4 is a schematic diagram of the stack of keyboard films according to an embodiment of the present invention.

[0022] Figures 5A to 5C is a schematic diagram of the process of forming a waterproof keyboard according to an embodiment of the present invention.

[0023] The reference numerals are as follows:

[0024] 1: Waterproof keyboard

[0025] 10: Substrate

[0026] 20: Key frame

[0027] 30: Keycap

[0028] 40: First adhesive layer

[0029] 50: Second adhesive layer

[0030] 60: Keyboard film

[0031] 21: Housing

[0032] 22: Perforation

[0033] 31: Top surface of keycap

[0034] 32: Inner surface of keycap

[0035] 33: Rim

[0036] 51: First side

[0037] 52: Second side

[0038] 53: Third side

[0039] 54: Fourth side

[0040] 61: Light-transmitting layer

[0041] 62: First light-shielding layer

[0042] 63: Second light-shielding layer

[0043] 211: Top surface of housing

[0044] 212: Bottom surface of housing

[0045] 213: Outer side surface of housing

[0046] 221: First side

[0047] 222: Second side

[0048] 223: Third side

[0049] 224: Fourth side

[0050] 2121: Positioning boss

[0051] I: Light-transmitting pattern

[0052] G1: First spacing

[0053] G2: Second spacing

[0054] G3: Third spacing

[0055] G4: Fourth spacing

[0056] A: Thickness

[0057] T: Hot pressing jig

[0058] P: Protrusion

[0059] C: Concave portion

[0060] X: X-axis

[0061] Y: Y-axis

[0062] Z: Z-axis Detailed implementation manners

[0063] Figure 1A and Figure 1B are the exploded view of the waterproof keyboard 1 according to an embodiment of the present invention. Figure 2 is the cross-sectional view of the waterproof keyboard 1 according to an embodiment of the present invention. Figure 3 is the front projection view of the perforations 22 and the second adhesive layers 50 according to an embodiment of the present invention. Figure 4 is the stacked view of the keyboard film 60 according to an embodiment of the present invention. Figures 5A to 5C is the schematic view of the process of forming the waterproof keyboard 1 according to an embodiment of the present invention.

[0064] Please refer to Figure 1A 、 Figure 1B and Figure 2 . The present invention provides a waterproof keyboard 1, including: a substrate 10, a key frame 20, a plurality of keycaps 30, a first adhesive layer 40, a plurality of second adhesive layers 50 and a keyboard film 60. The key frame 20 is disposed on the substrate 10. The key frame 20 includes a frame body 21 and a plurality of perforations 22. The perforations 22 are formed through the frame body 21. The frame body 21 has a frame top surface 211. The plurality of keycaps 30 respectively pass through the plurality of perforations 22, and the plurality of keycaps 30 respectively have keycap top surfaces 31. The first adhesive layer 40 is disposed on the frame top surface 211. Among them, the appearance and quantity of the first adhesive layer 40 are the same as those of the key frame 20. The plurality of second adhesive layers 50 are respectively disposed corresponding to the plurality of keycap top surfaces 31. Among them, the quantity of the second adhesive layer 50 corresponds to the quantity of the keycap top surfaces 31, and the shape of any second adhesive layer 50 is the same as that of its corresponding keycap top surface 31. For example: when the waterproof keyboard 1 has twenty keycaps 30, that is, has twenty keycap top surfaces 31, twenty second adhesive layers 50 will also be provided at the same time; when the keycap top surface 31 is rectangular, its corresponding second adhesive layer 50 is also rectangular. The keyboard film 60 is disposed on the first adhesive layer 40 and the plurality of second adhesive layers 50. Among them, at least one concave portion C is directly formed on the frame top surface 211 of the keyboard film 60 through hot pressing, and a plurality of convex portions P are formed on the plurality of keycap top surfaces 31. The at least one concave portion C is adhered to the frame top surface 211 through the first adhesive layer 40, and the plurality of convex portions P are adhered to the plurality of keycap top surfaces 31 through the plurality of second adhesive layers 50. The following will make a detailed description of each component of the waterproof keyboard 1 of the present invention.

[0065] Please refer to again Figure 1A and Figure 1B, the appearance of the substrate 10 is generally a rectangular plate. The substrate 10 can be, but is not limited to, for example: a printed circuit board, a flexible printed circuit (FPC) of a membrane keyboard, or a general carrier board without a circuit, etc. The substrate 10 includes at least one positioning hole 101, which is formed by penetrating the substrate 10. The shape of the positioning hole 101 can be, but is not limited to, for example: circular or oval. At least one light source (not shown in the figure) can be disposed on the upper surface of the substrate 10. The light source can be, but is not limited to, for example: a light-emitting diode, a small light bulb, a small cold cathode tube, or a cold light element, etc. The light sources can be configured such that at least one light source corresponds to a plurality of keycaps 30. In other words, each light source corresponds to one keycap 30 and is located below the keycap 30. In another embodiment, the light sources can also be evenly distributed on the substrate 10, and their quantity and positions do not correspond to the plurality of keycaps 30 one by one. The light emitted by the light sources can also be made to uniformly illuminate each keycap 30 through the addition of a light guide plate (not shown in the figure) and the conduction of the light guide plate.

[0066] Please further refer to Figure 2 and Figure 3 . The appearance of the key frame 20 is generally a rectangular plate. The key frame 20 includes a frame body 21 and a plurality of through holes 22 respectively for allowing a plurality of keycaps 30 to pass through. The frame body 21 can be, but is not limited to, for example: made by die-casting of metal or injection molding of plastic. The frame body 21 includes a frame top surface 211, a frame bottom surface 212, and a plurality of frame outer side surfaces 213. The frame top surface 211 and the frame bottom surface 212 are oppositely arranged. The frame bottom surface 212 is disposed on the side close to the substrate 10, and the frame top surface 211 is disposed on the side away from the substrate 10. The plurality of frame outer side surfaces 213 are located at the periphery of the frame body 21, and the plurality of frame outer side surfaces 213 connect the frame top surface 211 and the frame bottom surface 212. In the preferred embodiment of the present invention, the frame body 21 includes four frame outer side surfaces 213. The frame bottom surface 212 includes at least one positioning stud 2121 ( Figure 1B), the positioning convex post 2121 protrudes vertically from the bottom surface 212 of the frame body in the negative Z-axis direction, that is, it protrudes towards the substrate 10. The positioning convex post 2121 passes through the positioning hole 101, so that the key frame 20 and the substrate 10 can be fixed to each other. The shapes of the plurality of through holes 22 are respectively rectangular, and can be but are not limited to, for example: square or rectangular. The through holes 22 are formed through the frame body 21. The orthographic projection of the through holes 22 has a first side 221, a second side 222, a third side 223 and a fourth side 224. The first side 221 and the third side 223 are oppositely arranged. The second side 222 and the fourth side 224 are oppositely arranged. The first side 221 is adjacent to the second side 222 and the fourth side 224. The second side 222 is adjacent to the first side 221 and the third side 223. The third side 223 is adjacent to the second side 222 and the fourth side 224. The fourth side 224 is adjacent to the first side 221 and the third side 223.

[0067] Please refer to again Figure 1A 、 Figure 1B and Figure 2 , the plurality of keycaps 30 respectively include a keycap top surface 31, a keycap inner surface 32 and a cap edge 33. The keycap top surface 31 and the keycap inner surface 32 are oppositely arranged. The keycap inner surface 32 is arranged close to the substrate 10, while the keycap top surface 31 is arranged far from the substrate 10. The keycap inner surface 32 can be provided with hooks (not shown in the figure) and is connected to the substrate 10 through a plurality of scissor mechanisms (not shown in the figure), so that each keycap 30 can move up and down along a direction perpendicular to the substrate 10, that is, move back and forth along the Z-axis. The cap edge 33 is a structure that protrudes from the periphery of the keycap inner surface 32 in the negative Z-axis direction. The angle between the cap edge 33 and the keycap inner surface 32 is approximately 90 degrees. In a preferred embodiment of the present invention, the plurality of keycaps 30 are respectively light-transmissive keycaps 30. The keycaps 30 can be made of a light-transmissive plastic material, so that the whole keycap 30 has light-transmittance, or a light-transmissive material can be inlaid in a local area of the keycap 30, so that the local area of the keycap 30 has the characteristic of light-transmittance.

[0068] Please refer to again Figure 1A 、 Figure 1B and Figure 2 . The first adhesive layer 40 is arranged along the top surface 211 of the frame body and the plurality of outer side surfaces 213 of the frame body. In other words, the first adhesive layer 40 generally covers the top surface 211 of the frame body and the plurality of outer side surfaces 213 of the frame body. The appearance of the first adhesive layer 40 is generally the same as that of the key frame 20. In a preferred embodiment of the present invention, the first adhesive layer 40 is a hot melt adhesive layer.

[0069] Please refer to again Figures 1A to 3Multiple second adhesive layers 50 are respectively disposed on the top surfaces 31 of multiple keycaps, and the second adhesive layers 50 generally cover the top surfaces 31 of the keycaps. In a preferred embodiment of the present invention, the second adhesive layer 50 is a hot melt adhesive layer. The area of any one of the second adhesive layers 50 is equal to the area of its corresponding keycap top surface 31, and the total area of the multiple second adhesive layers 50 is equal to the total area of the multiple keycap top surfaces 31. The shape of any one of the second adhesive layers 50 is rectangular, and it can be, but is not limited to, for example: square or rectangle. The orthographic projection of any one of the second adhesive layers 50 includes a first side 51, a second side 52, a third side 53, and a fourth side 54. The first side 51 and the third side 53 are oppositely arranged, the second side 52 and the fourth side 54 are oppositely arranged, the first side 51 is adjacent to the second side 52 and the fourth side 54, the second side 52 is adjacent to the first side 51 and the third side 53, the third side 53 is adjacent to the second side 52 and the fourth side 54, and the fourth side 54 is adjacent to the first side 51 and the third side 53. Among them, each side of the orthographic projection of any one of the second adhesive layers 50 is correspondingly arranged with each side of the orthographic projection of its corresponding perforation 22. That is to say, the first side 51 of the orthographic projection of the second adhesive layer 50 is correspondingly arranged with and close to the first side 221 of the orthographic projection of the perforation 22, the second side 52 of the orthographic projection of the second adhesive layer 50 is correspondingly arranged with and close to the second side 222 of the orthographic projection of the perforation 22, the third side 53 of the orthographic projection of the second adhesive layer 50 is correspondingly arranged with and close to the third side 223 of the orthographic projection of the perforation 22, and the fourth side 54 of the orthographic projection of the second adhesive layer 50 is correspondingly arranged with and close to the fourth side 224 of the orthographic projection of the perforation 22. The orthographic projection range of any one of the second adhesive layers 50 is within the orthographic projection range of its corresponding perforation 22. That is to say, the area of the orthographic projection of any one of the second adhesive layers 50 is smaller than the area of the orthographic projection of its corresponding perforation 22. In other words, there is a first distance G1 between the first side 51 of the orthographic projection of the second adhesive layer 50 and the first side 221 of the orthographic projection of the perforation 22, there is a second distance G2 between the second side 52 of the orthographic projection of the second adhesive layer 50 and the second side 222 of the orthographic projection of the perforation 22, there is a third distance G3 between the third side 53 of the orthographic projection of the second adhesive layer 50 and the third side 223 of the orthographic projection of the perforation 22, and there is a fourth distance G4 between the fourth side 54 of the orthographic projection of the second adhesive layer 50 and the fourth side 224 of the orthographic projection of the perforation 22.

[0070] Please further refer to Figure 4The keyboard film 60 includes a light-transmitting layer 61, a first light-shielding layer 62, and a second light-shielding layer 63. The light-transmitting layer 61 is disposed close to the top surface 31 of the keycap. The first light-shielding layer 62 is bonded to the upper surface of the light-transmitting layer 61, and the second light-shielding layer 63 is bonded to the upper surface of the first light-shielding layer 62. It should be particularly noted that the "upper" referred to here means the positive direction along the Z axis. The light-transmitting layer 61 includes a thermoplastic polymer material, which can be, but is not limited to, for example: polyurethane (PU, polyurethane) or thermoplastic polyurethane (TPU, Thermoplastic polyurethane). The first light-shielding layer 62 includes a thermoplastic polymer material, which can be, but is not limited to, for example: polyurethane (PU, polyurethane) or thermoplastic polyurethane (TPU, Thermoplastic polyurethane). The second light-shielding layer 63 includes a thermoplastic polymer material, which can be, but is not limited to, for example: polyurethane (PU, polyurethane) or thermoplastic polyurethane (TPU, Thermoplastic polyurethane). In a preferred embodiment of the present invention, the thickness of the light-transmitting layer 61 is 0.01 mm, the thickness of the first light-shielding layer 62 is 0.01 mm, and the thickness of the second light-shielding layer 63 is 0.01 mm. The light-transmitting layer 61 can be transparent or white. The color of the first light-shielding layer 62 can be, but is not limited to, for example: black or gray. The color of the second light-shielding layer 63 can be, but is not limited to, for example: black or gray. The colors of the first light-shielding layer 62 and the second light-shielding layer 63 can be adjusted according to the appearance requirements of the product. The keyboard film 60 forms a light-transmitting pattern I by laser engraving and hollowing out the first light-shielding layer 62 or the second light-shielding layer 63. The light-transmitting pattern I can be, but is not limited to, for example: numbers, Chinese characters, English letters, or punctuation marks. In a preferred embodiment of the present invention, the keyboard film 60 has a thickness A, where the thickness A is greater than 0. The thickness A can be, but is not limited to, for example: the thickness A is between 0.02 mm and 0.15 mm. It should be particularly noted that in a preferred embodiment of the present invention, the first spacing G1, the second spacing G2, the third spacing G3, and the fourth spacing G4 between the sides of the orthographic projection of any second adhesive layer 50 and the sides of the orthographic projection of its corresponding perforation 22 need to be configured to be not less than twice the thickness A, that is, the first spacing G1, the second spacing G2, the third spacing G3, and the fourth spacing G4 need to be configured to be greater than or equal to twice the thickness A. For example, if the thickness A of the keyboard film 60 is 0.05 mm, then the first spacing G1, the second spacing G2, the third spacing G3, and the fourth spacing G4 need to be configured to be not less than 0.10 mm. The above ratio configuration can effectively solve the problem that when the user strikes the waterproof keyboard 1 and the keycap 30 moves in the negative direction of the Z axis, causing the keyboard film 60 to deform, and the material is extruded in the gap between the keycap 30 and the key frame 20, resulting in a poor tapping feel.

[0071] The process of forming the waterproof keyboard 1 of the present invention will be further described below. First, as Figure 5A shown, a first adhesive layer 40 is prepared on the top surface 211 of the housing and the outer side surfaces 213 of the housing, and a second adhesive layer 50 is prepared on the top surfaces 31 of the plurality of keycaps respectively. Then, as Figure 5B shown, a keyboard film 60 to be formed is prepared on the first adhesive layer 40 and the second adhesive layer 50. Then, as Figure 5C shown, the keyboard film 60 is directly hot-pressed onto the top surface 211 of the housing and the top surface 31 of the keycap by a hot-pressing jig T. After being heated, the keyboard film 60 will form a convex portion P on the top surface 31 of the keycap and a concave portion C on the top surface 211 of the housing along the outer contour of the top surface 31 of the keycap, the cap edge 33 and the top surface 211 of the housing. The concave portion C of the formed keyboard film 60 is attached to the top surface 211 of the housing through the first adhesive layer 40, and the convex portion P is attached to the top surface 31 of the keycap through the second adhesive layer 50. In another preferred embodiment of the present invention, the lower surface of the heated keyboard film 60 will further extend along the outer contour of the outer side surfaces 213 of the housing for profiling, and the keyboard film 60 is attached to the outer side surfaces 213 of the housing through the first adhesive layer 40. The advantage of this method is that since the convex portion P and the concave portion C of the keyboard film 60 are directly formed on the keycap 30 and the key frame 20, not only can the processes of forming and attaching the keyboard film 60 to the keycap 30 and the key frame 20 be combined and simplified, but also the keyboard film 60 can be more closely attached to the keycap 30 and the key frame 20 without generating tolerances.

[0072] In summary, the advantages of the waterproof keyboard 1 of the present invention at least include:

[0073] 1. The light-transmitting layer 61, the first light-shielding layer 62 and the second light-shielding layer 63 in the keyboard film 60 of the present invention are all thermoplastic polymer materials. The advantage of this material is that it has good elasticity, high ductility, and a relatively thin thickness, which helps to reduce the overall thickness of the waterproof keyboard 1 and improve the user's feeling when pressing the keycap 30.

[0074] 2. As mentioned above, since the light-transmitting layer 61, the first light-shielding layer 62 and the second light-shielding layer 63 are all thermoplastic polymer materials, the bonding strength between the layers is extremely high, and there is no need to additionally provide a protective layer to protect the light-transmitting pattern I.

[0075] 3. The keyboard film 60 of the present invention is attached to the key frame 20 and the keycap 30, so it will cover the keyboard surface more comprehensively, achieving good waterproof and dustproof effects.

[0076] 4. The light-transmitting pattern I of the present invention is formed by hollowing out the first light-shielding layer 62 or the second light-shielding layer 63. Therefore, the bonding surface between the light-transmitting layer 61 and the top surface 31 of the keycap is a complete plane, and there is no step difference that causes the second adhesive layer 50 to generate bubbles on the top surface 31 of the keycap.

[0077] 5. By configuring the ratios of the distances G1, G2, G3, and G4 between the thickness A of the keyboard membrane 60 and the respective sides 221, 222, 223, and 224 of the orthographic projection of the perforations 22 and the respective sides 51, 52, 53, and 54 of the second adhesive layer 50, the present invention can avoid the problem of material extrusion when the keyboard membrane 60 is pressed, thereby enhancing the feel and making the appearance of the waterproof keyboard 1 sharper.

[0078] 6. The keyboard membrane 60 of the present invention is disposed on the top surface 31 of the keycap and the top surface 211 of the key frame and directly formed with convex portions P and concave portions C by profiling, which helps to reduce the tolerances between the convex portions P and concave portions C of the keyboard membrane 60 and between the keycaps 30 and the key frames 20, and solves the problem of uneven fitting.

[0079] However, as described above, it is only a preferred embodiment of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the invention description still fall within the scope covered by the patent of the present invention. In addition, any embodiment or claim of the present invention does not have to achieve all the purposes, advantages, or features disclosed by the present invention. In addition, the abstract part and the title are only used to assist in the search of patent documents and do not limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the elements or distinguish different embodiments or scopes, and do not limit the upper or lower limits of the number of elements.

Claims

1. A waterproof keyboard, comprising: A substrate; A key frame disposed on the substrate, the key frame including a frame body and a plurality of perforations, the plurality of perforations being formed through the frame body, and the frame body having a top surface of the frame body; A plurality of keycaps respectively passing through the plurality of perforations, the plurality of keycaps respectively having a top surface of the keycap; A first adhesive layer disposed on the top surface of the frame body; A plurality of second adhesive layers respectively disposed corresponding to the top surfaces of the plurality of keycaps; And A keyboard film disposed on the first adhesive layer and the plurality of second adhesive layers, Wherein, the keyboard film forms at least one recess directly at the top surface of the frame body through hot pressing, and forms a plurality of protrusions at the top surfaces of the plurality of keycaps, the at least one recess is adhered to the top surface of the frame body through the first adhesive layer, and the plurality of protrusions are adhered to the top surfaces of the plurality of keycaps through the plurality of second adhesive layers.

2. The waterproof keyboard according to claim 1, wherein, The keyboard film includes a light-transmitting layer and at least one light-shielding layer, and the at least one light-shielding layer is combined and disposed on the upper surface of the light-transmitting layer.

3. The waterproof keyboard according to claim 2, wherein, The keyboard film further includes a light-transmitting pattern formed by hollowing out the at least one light-shielding layer.

4. The waterproof keyboard according to claim 2, wherein, The materials of the light-transmitting layer and the at least one light-shielding layer are polyurethane or thermoplastic polyurethane.

5. The waterproof keyboard according to claim 1, wherein, The orthographic projection range of any one of the second adhesive layers is within the orthographic projection range of the corresponding perforation.

6. The waterproof keyboard according to claim 5, wherein, The orthographic projection of the perforation has a first side, a second side, a third side and a fourth side, the first side and the third side are oppositely disposed, the second side and the fourth side are oppositely disposed, the first side is adjacent to the second side and the fourth side, the second side is adjacent to the first side and the third side, the third side is adjacent to the second side and the fourth side, and the fourth side is adjacent to the first side and the third side.

7. The waterproof keyboard according to claim 6, wherein, The orthographic projection of the second adhesive layer has a first side, a second side, a third side and a fourth side, the first side and the third side are oppositely disposed, the second side and the fourth side are oppositely disposed, the first side is adjacent to the second side and the fourth side, the second side is adjacent to the first side and the third side, the third side is adjacent to the second side and the fourth side, and the fourth side is adjacent to the first side and the second side.

8. The waterproof keyboard according to claim 7, wherein, The first side of the orthographic projection of the perforation is close to the first side of the orthographic projection of the second adhesive layer, and there is a first distance between the first side of the orthographic projection of the perforation and the first side of the orthographic projection of the second adhesive layer, the second side of the orthographic projection of the perforation is close to the second side of the orthographic projection of the second adhesive layer, and there is a second distance between the second side of the orthographic projection of the perforation and the second side of the orthographic projection of the second adhesive layer, the third side of the orthographic projection of the perforation is close to the third side of the orthographic projection of the second adhesive layer, and there is a third distance between the third side of the orthographic projection of the perforation and the third side of the orthographic projection of the second adhesive layer, the fourth side of the orthographic projection of the perforation is close to the fourth side of the orthographic projection of the second adhesive layer, and there is a fourth distance between the fourth side of the orthographic projection of the perforation and the fourth side of the orthographic projection of the second adhesive layer.

9. The waterproof keyboard according to claim 8, wherein, The keyboard film has a thickness greater than 0, the first distance is not less than twice the thickness, the second distance is not less than twice the thickness, the third distance is not less than twice the thickness, and the fourth distance is not less than twice the thickness.

10. The waterproof keyboard according to claim 1, wherein, The first adhesive layer and the plurality of second adhesive layers are hot melt adhesive layers.

Images