Keyboard device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHICONY ELECTRONICS CO LTD
- Filing Date
- 2021-07-16
- Publication Date
- 2026-06-26
Smart Images
Figure CN115617181B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an input device, and more particularly to a keyboard device. Background Technology
[0002] Keyboards are now a very common input device in electronic devices such as laptops, desktops, and tablets. In addition, keyboards for laptops or tablets often have a touchpad, which is used to sense the movement or pressure of the user's fingers to control cursor movements (such as movement or clicking).
[0003] However, after the touchpad and keyboard casing are assembled, there is often a gap between them. Therefore, external dust, debris, or liquids can easily enter the keyboard through this gap, making cleaning difficult and potentially damaging the internal circuitry or electronic components. Furthermore, consumers or users can easily see the internal components through these gaps, affecting the keyboard's aesthetics. Summary of the Invention
[0004] In view of the above, in one embodiment, a keyboard device is provided, including a substrate, a touchpad module, a cover plate, a cladding layer, an elastic layer, and an adhesive layer. The substrate has a top surface. The touchpad module is disposed on the top surface of the substrate and includes a circuit board. The cover plate covers the top surface of the substrate and includes an upper surface, a lower surface, and a clearance hole, the clearance hole penetrating the upper and lower surfaces and corresponding to the touchpad module. The cladding layer covers the upper surface of the cover plate and includes a through-hole and a first inner surface, the first inner surface facing the upper surface, the through-hole corresponding to the clearance hole and having an edge. The elastic layer is located within the through-hole of the cladding layer and includes a circumferential edge and a second inner surface, the second inner surface facing the circuit board, the circumferential edge seamlessly engaging with the edge of the through-hole. The adhesive layer is attached between the first inner surface of the cladding layer and the upper surface of the cover plate, and attached between the second inner surface of the elastic layer and the circuit board.
[0005] In summary, the keyboard device according to the embodiments of the present invention, by having an elastic layer located inside the through-hole of the coating layer, the circumference of the elastic layer seamlessly joined to the edge of the through-hole, and the elastic layer attached to the circuit board, can achieve advantages such as preventing external dust, debris, or liquid from entering the interior of the keyboard device, avoiding the visibility of the internal components of the keyboard from the outside, and eliminating the need for an additional glass substrate for the touchpad module. Attached Figure Description
[0006] Figure 1 This is a perspective view of the first embodiment of the keyboard device of the present invention.
[0007] Figure 2 This is an exploded perspective view of the first embodiment of the keyboard device of the present invention.
[0008] Figure 3This is a partial top view of the first embodiment of the keyboard device of the present invention.
[0009] Figure 4 yes Figure 3 A sectional view along line segment 4-4.
[0010] Figure 5 yes Figure 4 A magnified view of a portion of the image.
[0011] Figure 6 yes Figure 3 A sectional view along line segment 6-6.
[0012] Figure 7 This is an exploded perspective view of the touchpad module of the present invention.
[0013] Figure 8 This is an exploded perspective view of the second embodiment of the keyboard device of the present invention.
[0014] Figure 9 This is an exploded perspective view of the third embodiment of the keyboard device of the present invention.
[0015] Figure 10 This is a perspective view of the fourth embodiment of the keyboard device of the present invention.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1 Keyboard device
[0018] 10 substrate
[0019] 11 Top surface
[0020] 20 Touchpad Modules
[0021] 21 Circuit Board
[0022] 211 Edge
[0023] Surfaces 212, 213
[0024] 214 Pivotal side
[0025] 22 Reinforcing Plate
[0026] 221 Outer Ring Road
[0027] 23 Trigger Switch
[0028] 24 Connectors
[0029] 30 Cover plate
[0030] 31 Upper surface
[0031] 32 Lower surface
[0032] 33 Clearance Holes
[0033] 331 inner periphery
[0034] 35 First perforation
[0035] 40 drapery
[0036] 41 Through hole
[0037] 411 Kongyuan
[0038] 42 First inner surface
[0039] 43 First outer surface
[0040] 45 Second perforation
[0041] 50 elastic layer
[0042] 51. Peripheral
[0043] 52 Second inner surface
[0044] 53 Contact surfaces
[0045] 60 Next layer
[0046] 61, 61a, 61b Openwork sections
[0047] 611, 612 Hollow-out holes
[0048] 70 buttons
[0049] 80 Pivot
[0050] S-spacing
[0051] F pattern Detailed Implementation
[0052] Various embodiments are described in detail below; however, these embodiments are merely illustrative and do not limit the scope of protection intended for this invention. Furthermore, some elements are omitted in the drawings of the embodiments to clearly show the technical features of the invention. The same reference numerals will be used to denote the same or similar elements in all drawings.
[0053] Figure 1 This is a perspective view of the first embodiment of the keyboard device of the present invention. Figure 2 This is an exploded perspective view of the first embodiment of the keyboard device of the present invention. Figure 1 and Figure 2 As shown, the keyboard device 1 includes a substrate 10, a touchpad module 20, a cover plate 30, a coating layer 40, an elastic layer 50, and an adhesive layer 60. The keyboard device 1 can be applied to various electronic products (e.g., input devices for desktop computers, laptop computers, tablet computers, or other electronic devices) to allow users to input corresponding signals. Figure 1 As shown, in this embodiment, the keyboard device 1 is a protective keyboard that can be used with a tablet computer, but this is not a limitation and the keyboard device 1 can also be a keyboard of a laptop computer.
[0054] like Figure 1 and Figure 2 As shown, the substrate 10 can be a rigid plate made of metal (such as iron, aluminum, or alloy) or plastic. The substrate 10 has a top surface 11, and the aforementioned touchpad module 20, cover plate 30, coating layer 40, elastic layer 50, and adhesive layer 60 are all disposed above the top surface 11. In addition, in this embodiment, a plurality of buttons 70 are arranged above the top surface 11 of the substrate 10. The plurality of buttons 70 and the touchpad module 20 are respectively disposed in different areas above the top surface 11. The plurality of buttons 70 may include letter keys, number keys, space keys, enter keys, caps lock keys, etc., for users to press and operate to generate corresponding signals.
[0055] Figure 3 This is a partial top view of the first embodiment of the keyboard device of the present invention. Figure 4 for Figure 3 A sectional view along line segment 4-4. Figure 5 for Figure 4 A magnified view of a portion of the image. Figure 6 for Figure 3 A sectional view along line segment 6-6. Figure 7 This is an exploded perspective view of the touchpad module of the present invention. Figure 2 and Figure 4 As shown, the touchpad module 20 (e.g., a touchpad or trackpad) allows users to operate it by sliding or pressing their fingers to control the cursor's displacement or generate corresponding control signals. Figures 2 to 7 As shown, in this embodiment, the touchpad module 20 includes a circuit board 21. A trigger switch 23 is provided on the surface 212 of the circuit board 21 facing the substrate 10. For example, the trigger switch 23 can be a push-button switch or a micro switch. Furthermore, when the circuit board 21 is pressed, it can descend relative to the substrate 10, causing the trigger switch 23 to be pressed and generate a signal. When the circuit board 21 is released, it can rise and reset due to the elastic force accumulated by the pressed trigger switch 23. In some embodiments, the circuit board 21 can be a resistive touch panel, a capacitive touch panel, or an optical touch panel, etc.
[0056] For example Figure 6 and Figure 7As shown, in this embodiment, the circuit board 21 includes a pivot side 214, which is located on the opposite side of the trigger switch 23. The circuit board 21 is pivotally mounted on the top surface 11 of the substrate 10 with the pivot side 214, so that the circuit board 21 can swing and descend relative to the substrate 10 when pressed. Here, the circuit board 21 is provided with a connector 24 along the pivot side 214. In this embodiment, the connector 24 is an elongated metal plate. The connector 24 can be assembled and fixed to the substrate 10 by means of adhesion, snap-fit, or locking, so that the circuit board 21 can swing relative to the substrate 10 with the pivot side 214 as the fulcrum. In some embodiments, all four sides of the circuit board 21 can also be pivotally mounted on the substrate 10, so that the circuit board 21 can rise and fall relative to the substrate 10 when pressed.
[0057] like Figures 2 to 5 As shown, the cover plate 30 can be a rigid shell plate made of metal (such as iron, aluminum, or alloy) or plastic, and the cover plate 30 covers the top surface 11 of the substrate 10. The cover plate 30 includes an upper surface 31, a lower surface 32, and a clearance hole 33. The clearance hole 33 penetrates the upper surface 31 and the lower surface 32 and corresponds to the touchpad module 20, so that the touchpad module 20 is not covered by the cover plate 30 and can be operated by the user. In addition, the cover plate 30 includes a plurality of first through holes 35, which penetrate the upper surface 31 and the lower surface 32 and correspond to a plurality of buttons 70, so that the plurality of buttons 70 are not covered by the cover plate 30 and can be pressed and operated by the user.
[0058] like Figures 2 to 7 As shown, the cover layer 40 covers the upper surface 31 of the cover plate 30. The material of the cover layer 40 is different from that of the cover plate 30. For example, the cover layer 40 can be a leather layer (such as genuine leather or artificial leather) or a fabric layer (such as cotton, linen, nylon, non-woven fabric, microfiber fabric, polyester fiber fabric, Oxford cloth, or waterproof fabric). The cover layer 40 can protect the cover plate 30 and improve the aesthetics and operating comfort of the keyboard device 1. In addition, different materials of the cover layer 40 can be matched according to actual needs to adjust the tactile feel. For example, when the cover layer 40 is a fabric layer, it can have moisture absorption and breathability, and the touch is softer and more comfortable. When the cover layer 40 is a leather layer, it can make the overall appearance of the keyboard device 1 more textured and also have durability and breathability.
[0059] like Figures 2 to 7As shown, the covering layer 40 includes a through hole 41 and a first inner surface 42. The first inner surface 42 faces the upper surface 32 of the cover plate 30. The through hole 41 corresponds to the clearance hole 33 and the touchpad module 20 and has an edge 411, so that the touchpad module 20 is not covered by the covering layer 40. In addition, the covering layer 40 includes a plurality of second through holes 45, each corresponding to a plurality of buttons 70, so that the plurality of buttons 70 are not covered by the covering layer 40 and can be pressed by the user. In some embodiments, the covering layer 40 may also cover the plurality of buttons 70, and the user can indirectly press the button 70 to trigger a descent signal by pressing the covering layer 40.
[0060] In some embodiments, the shapes of the clearance hole 33, the touch panel module 20, and the through hole 41 can correspond to each other. For example, the shapes of the clearance hole 33, the touch panel module 20, and the through hole 41 can be corresponding square, rectangular, or other shapes.
[0061] like Figures 2 to 7 As shown, the elastic layer 50 is located within the through-hole 41 of the covering layer 40. The elastic layer 50 includes a circumferential edge 51 and a second inner surface 52, with the second inner surface 52 facing the circuit board 21. The circumferential edge 51 of the elastic layer 50 is seamlessly joined to the edge 411 of the through-hole 41 of the covering layer 40. In some embodiments, the covering layer 40 and the elastic layer 50 may be made of the same or different materials. For example, the elastic layer 50 may be an elastic leather layer (e.g., genuine leather or artificial leather) or an elastic fabric layer (e.g., cotton, linen, nylon, non-woven fabric, microwoven fabric, polyester fiber fabric, Oxford cloth, or waterproof fabric) and have elastic stretching properties. Preferably, the elongation rate of the elastic layer 50 in at least one direction is higher than that of the covering layer 40, that is, the elastic tensile properties of the elastic layer 50 are better than those of the covering layer 40. In other embodiments, the elastic layer 50 and the covering layer 40 may also be made of the same fabric or leather, and the present invention is not limited thereto.
[0062] In some embodiments, the aforementioned covering layer 40 and elastic layer 50 may both be fabric layers and spliced together to form a single piece of fabric. For example, during the manufacturing process, the covering layer 40 may first be formed with through holes 41 by stamping or cutting, and then an elastic layer 50 corresponding to the shape of the through holes 41 may be prepared (in this case, the shape of the elastic layer 50 and the shape of the through holes 41 are both rectangular). The periphery 51 of the elastic layer 50 may be seamlessly joined to the edge 411 of the through holes 41 of the covering layer 40 by sewing or adhesive (e.g., waterproof adhesive), so that the covering layer 40 and the elastic layer 50 are seamlessly spliced together to form a single piece of fabric.
[0063] like Figure 2 and Figure 5As shown, the bonding layer 60 is attached between the first inner surface 42 of the covering layer 40 and the upper surface 31 of the cover plate 30, and between the second inner surface 52 of the elastic layer 50 and the circuit board 21, so that the covering layer 40 is directly fixed to the upper surface 31 of the cover plate 30, and the elastic layer 50 is directly fixed to the surface 213 of the circuit board 21 facing the elastic layer 50. In other words, after the covering layer 40 and the elastic layer 50 are seamlessly spliced, they can be directly attached to the cover plate 30 and the circuit board 21 through the bonding layer 60.
[0064] In some embodiments, the adhesive layer 60 may be a double-sided adhesive layer, a thermoplastic hot melt adhesive layer, a thermosetting hot melt adhesive layer, or a general adhesive layer. Taking the adhesive layer 60 as a thermoplastic hot melt adhesive layer, during assembly, after the covering layer 40 and the elastic layer 50 are seamlessly joined, the adhesive layer 60 can be disposed on the first inner surface 42 of the covering layer 40 and the second inner surface 52 of the elastic layer 50. After the covering layer 40 and the elastic layer 50 are covered on the surfaces of the cover plate 30 and the circuit board 21, the adhesive layer 60 is heated to soften it and generate adhesion. After the adhesive layer 60 cools and hardens, each part of the covering layer 40 and the elastic layer 50 can be quickly and uniformly bonded and fixed.
[0065] In this way, by having the elastic layer 50 located inside the through hole 41 of the coating layer 40, the circumferential edge 51 of the elastic layer 50 seamlessly joined to the hole edge 411 of the through hole 41, and the elastic layer 50 directly attached to the surface of the circuit board 21, advantages such as waterproofing, dustproofing, cost saving, and increased aesthetics can be achieved. These are explained in detail below.
[0066] First, such as Figure 2 and Figure 5 As shown, the elastic layer 50 is located within the through-hole 41 of the covering layer 40, and the circumferential edge 51 of the elastic layer 50 is seamlessly joined to the edge 411 of the through-hole 41. This prevents external dust, debris, or liquid from entering the keyboard device 1 through the joint between the covering layer 40 and the elastic layer 50, achieving a waterproof and dustproof effect. This makes the keyboard device 1 easier to clean and prevents damage to the internal circuitry or electronic components. Furthermore, the user cannot see the internal components of the keyboard device 1 from the outside. Therefore, the internal components of the keyboard device 1 do not require cosmetic treatment (such as spraying or coating the components black), reducing manufacturing and labor costs.
[0067] In addition, since the cover plate 30 and the touchpad module 20 are covered by the cover layer 40 and the elastic layer 50 respectively, the surface flatness of the keyboard device 1 can be further improved. In terms of manufacturing process, after the cover layer 40 is assembled, it is not necessary to use laser cutting equipment to cut to expose the touchpad module 20. Therefore, it can save the cost required for cutting (such as the cost of attaching and removing protective tape for cutting or cleaning after cutting), and can reduce the risk of electrostatic discharge, thereby reducing the need for components or processes to avoid electrostatic discharge and reducing costs.
[0068] For example Figure 4 and Figure 5 As shown, the elastic layer 50 is directly attached to the surface 213 of the circuit board 21, eliminating the need for an additional glass substrate on the circuit board 21 and significantly reducing costs. Specifically, the elastic layer 50 may have a touch surface 53, with the touch surface 53 and the second inner surface 52 being the two opposing surfaces of the elastic layer 50. The user's finger can directly slide or press on the touch surface 53, and the circuit board 21 can respond to the user's finger movement or gestures by scrolling, zooming in, zooming out, or opening a window. Alternatively, the circuit board 21 can respond to the user's finger pressing or double-clicking on the touch surface 53 by selecting or displaying a menu. Furthermore, due to the elastic stretching properties of the elastic layer 50, when the circuit board 21 is compressed and lowered relative to the substrate 10, the elastic layer 50 can simultaneously stretch elastically to avoid affecting the tactile feedback. In other embodiments, a Mylar (not shown) layer can also be added to the circuit board 21 as a touch interface; this invention is not limited to this.
[0069] For example Figure 5 As shown, in this embodiment, the covering layer 40 includes a first outer surface 43, and the first outer surface 43 and the first inner surface 42 are the two opposite surfaces of the covering layer 40. The contact surface 53 of the elastic layer 50 and the first outer surface 43 of the covering layer 40 can be located on the same plane to improve the surface flatness of the keyboard device 1 and make it more aesthetically pleasing.
[0070] In some embodiments, the aforementioned covering layer 40 may be a unidirectional elastic stretch fabric, that is, the covering layer 40 may be a lateral stretch fabric that only allows for lateral movement (e.g., Figure 1 (as shown in the X-axis direction) or vertical (e.g.) Figure 1 The fabric layer shown is elastically stretchable in the Y-axis direction to facilitate winding and attachment to the cover plate 30, but this is not a limitation. For example, the elastic stretchable direction of the covering layer 40 can be matched with the direction of product movement, for example... Figure 1As shown, in this embodiment, the keyboard device 1 has a pivot 80, allowing components (such as a display screen or cover plate) assembled to the pivot 80 to rotate about the pivot 80 in a straight direction (i.e., the Y-axis direction). Therefore, the direction in which the cover layer 40 can be elastically stretched can be straight (the Y-axis direction, i.e., the direction perpendicular to the pivot 80) to match the aforementioned rotational movement direction, thus preventing the cover layer 40 from affecting the operating feel. The elastic layer 50 can be a multi-directional elastic stretch fabric, for example, a two-way elastic stretch fabric or a four-way elastic stretch fabric, allowing at least lateral (e.g., Figure 1 The X-axis direction (as shown) and the linear direction (such as...) Figure 1 The elastic stretching (as shown in the Y-axis direction) causes the circuit board 21 to be compressed and descend relative to the substrate 10, which can greatly reduce the stretching of the elastic layer 50 and provide a good operating feel.
[0071] like Figures 4 to 7 As shown, in this embodiment, the touchpad module 20 also includes a reinforcing plate 22. For example, the reinforcing plate 22 can be a rigid plate made of metal (e.g., iron, aluminum, or alloy) or plastic. The reinforcing plate 22 is stacked and fixed on the surface 212 of the circuit board 21 facing the substrate 10, and the reinforcing plate 22 has an outer circumference 221. The outer circumference 221 is adjacent to the edge 211 and corner of the circuit board 21, so as to increase the overall structural strength of the touchpad module 20 through the reinforcing plate 22, thereby reducing the idle travel and movement travel of the touchpad module 20 after being pressed, and thus reducing the amount of pulling on the elastic layer 50, so that the touchpad module 20 can provide a better operating feel. In addition, since the outer circumference 221 of the reinforcing plate 22 is adjacent to the edge 211 and corner of the circuit board 21, even if each corner or edge of the circuit board 21 is pressed, the idle travel and movement travel of the touchpad module 20 after being pressed can be reduced by the reinforcing plate 22.
[0072] like Figure 3 and Figure 5As shown, the size of the circuit board 21 is smaller than the size of the clearance hole 33, so that there is a distance S between the edge 211 of the circuit board 21 and the inner periphery 331 of the clearance hole 33. For example, in this embodiment, the length and width of the circuit board 21 are smaller than the length and width of the clearance hole 33, respectively, so that an annular distance S is formed between the edge 211 of the circuit board 21 and the inner periphery 331 of the clearance hole 33, and a local area around the elastic layer 50 is located within the distance S (i.e., between the edge 211 and the inner periphery 331). In this way, the local elastic layer 50 located within the distance S (i.e., between the edge 211 and the inner periphery 331) is not fixed by adhesion, so that the local elastic layer 50 has better tensile strength, and can have a better elastic expansion and contraction effect when the circuit board 21 is pressed, so as to provide a good operating feel. In some embodiments, the circuit board 21 may also be formed with different shapes of distance S only by its length or width being smaller than the length or width of the clearance hole 33, which is not limited.
[0073] For example Figure 3 and Figure 5 As shown, the junction of the periphery 51 of the elastic layer 50 and the hole edge 411 of the through hole 41 of the coating layer 40 is located within the spacing S. That is, the junction is located between the edge 211 of the circuit board 21 and the inner periphery 331 of the clearance hole 33. When the elastic layer 50 is subjected to force and elastically stretched, the stress on the junction can be greatly reduced, thus preventing the elastic layer 50 and the coating layer 40 from separating from each other and improving the service life.
[0074] For example Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the adhesive layer 60 further has a hollowed-out portion 61, wherein the hollowed-out portion 61 is a partially hollowed-out area of the adhesive layer 60, and the hollowed-out portion 61 is located within the spacing S (i.e., between the edge 211 and the inner periphery 331), so that after the elastic layer 50 and the adhesive layer 60 are stacked on each other, the hardness of the partially elastic layer 50 located within the spacing S can be further reduced and it has better tensile strength, so as to provide a better operating feel.
[0075] In some embodiments, the cutout portion 61 of the aforementioned bonding layer 60 may have several different implementations. For example... Figure 2 and Figure 3 As shown, in this embodiment, the distance S between the edge 211 of the circuit board 21 and the inner periphery 331 of the clearance hole 33 is an annular distance. The hollow part 61 includes a plurality of hollow holes 611. Here, the plurality of hollow holes 611 are round holes and are arranged in a row along the distance S.
[0076] However, the above embodiments are merely examples. In some embodiments, the perforated hole 611 may also be a square hole, an oblong hole, an elliptical hole, or a hole of other shapes, and the shapes of each perforated hole 611 may be the same as each other or only partially the same. In addition, multiple perforated holes 611 may be arranged in multiple rows or only disposed in a local area of the annular spacing S.
[0077] Figure 8 This is an exploded perspective view of a second embodiment of the keyboard device of the present invention, as shown below. Figure 8 As shown, the shape of the hollowed-out portion 61a in this embodiment is different from that of the hollowed-out portion 61 in the first embodiment. The hollowed-out portion 61a in this embodiment is a single annular perforation and is provided along the annular spacing S. Compared with the first embodiment, the hollowed-out area of the hollowed-out portion 61a is larger, which further reduces the hardness of the local elastic layer 50 located within the spacing S and gives it better tensile strength.
[0078] Figure 9 This is an exploded perspective view of the third embodiment of the keyboard device of the present invention, as shown below. Figure 9 As shown, the shape of the hollow portion 61b in this embodiment is different from that of the hollow portion 61 in the first embodiment. The hollow portion 61b in this embodiment includes a plurality of hollow holes 612. Here, the plurality of hollow holes 612 are elongated holes and arranged in a ring along the spacing S. Compared with the first embodiment, the hollow area of the hollow portion 61b can be increased, so that the hardness of the local elastic layer 50 located within the spacing S is further reduced and it has better tensile properties.
[0079] Figure 10 A perspective view of the fourth embodiment of the keyboard device of the present invention, as shown below. Figure 10 As shown, since the elastic layer 50 and the covering layer 40 are separate and independent components, and the elastic layer 50 covers the touchpad module 20, different patterns F (such as text, symbols, patterns or images) can be set on the touch surface 53 of the elastic layer 50 according to the user's needs, resulting in different appearance changes and visual effects. The pattern F set on the touch surface 53 can also clearly identify the operation area and position of the touchpad module 20. For example, during the manufacturing process, the elastic layer 50 can first complete the pattern F separately and then be spliced with the covering layer 40.
[0080] In some embodiments, the color of the elastic layer 50 may also be different from the color of the covering layer 40, which can also achieve the advantages of producing different appearance changes and visual effects, as well as making the operation area and position of the touchpad module 20 clearly identifiable.
[0081] Although the technical content of the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention should be included within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.
Claims
1. A keyboard device, characterized in that, include: The substrate has a top surface; A touchpad module is disposed on the top surface of the substrate, and the touchpad module includes a circuit board; A cover plate covers the top surface of the substrate. The cover plate includes an upper surface, a lower surface, and a clearance hole that passes through the upper surface and the lower surface and corresponds to the touch panel module. A covering layer is applied to the upper surface of the cover plate. The covering layer includes a through hole and a first inner surface facing the upper surface. The through hole corresponds to the clearance hole and has an edge. An elastic layer, located within the through-hole of the coating layer, includes a circumferential edge and a second inner surface, the second inner surface facing the circuit board, and the circumferential edge seamlessly joined to the edge of the through-hole; and Next, between the first inner surface of the covering layer and the upper surface of the cover plate, and between the second inner surface of the elastic layer and the circuit board; The elongation of the elastic layer is higher than that of the covering layer in at least one direction.
2. The keyboard device according to claim 1, characterized in that, The covering layer is a unidirectional elastic stretch fabric layer, and the elastic layer is a multidirectional elastic stretch fabric layer.
3. The keyboard device according to claim 1, characterized in that, It also includes multiple buttons arranged on the top surface of the substrate, the cover plate includes multiple first through holes, the cladding layer includes multiple second through holes, the first through holes correspond to the second through holes respectively, and the buttons correspond to the second through holes respectively.
4. The keyboard device according to claim 1, characterized in that, The touchpad module includes a reinforcing plate fixed to the surface of the circuit board facing the substrate, and the reinforcing plate includes an outer circumference adjacent to the edge of the circuit board.
5. The keyboard device according to claim 1, characterized in that, The circuit board includes a pivot side that is pivotally disposed on the top surface of the substrate.
6. The keyboard device according to claim 1, characterized in that, The size of the circuit board is smaller than the size of the clearance hole, so that there is a gap between the edge of the circuit board and the inner periphery of the clearance hole, and the elastic layer is located within the gap.
7. The keyboard device according to claim 6, characterized in that, The junction between the periphery of the ring and the edge of the through hole is located within the distance.
8. The keyboard device according to claim 6, characterized in that, The bonding layer has a cutout portion located within the spacing.
9. The keyboard device according to claim 8, characterized in that, The spacing is annular, and the cutout is annular perforation.
10. The keyboard device according to claim 8, characterized in that, The cutout section includes multiple cutout holes arranged in at least one row.
11. The keyboard device according to claim 10, characterized in that, All the perforated holes have the same shape.