Composite board for external keyboard of tablet personal computer

Abstract

The utility model relates to the technical field of composite boards, in particular to a composite board for an external keyboard of a tablet personal computer, which is characterized by comprising a composite layer and a frame arranged on the periphery of the composite layer. The composite layer comprises a first outer skin layer, a core plate layer and a second outer skin layer which are sequentially arranged from bottom to top, a through hole corresponding to a keyboard battery position is formed in the core plate layer, a steel sheet is arranged on the through hole, and the steel sheet is matched with the through hole; the first outer skin layer, the core plate layer and the second outer skin layer are all connected with the frame. The through holes corresponding to the keyboard battery positions are formed in the core plate layer, and the reinforcing steel sheets are arranged on the through holes, so that the keyboard battery positions are locally reinforced, and the external keyboard has the advantages that the impact resistance of the keyboard battery positions is improved, and the use safety of the external keyboard with built-in batteries is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite boards, and more specifically, to a composite board used for an external keyboard of a tablet computer. Background Art

[0002] With the rapid development of modern society and the widespread application of computer technology, the form of computers has changed greatly, from desktop computers to notebooks, and now to the very popular tablet computers. At present, desktop computers and notebook computers are still the mainstream of office computers, while tablet computers are more used for entertainment and leisure due to their advantages such as lightness, easy to carry and simple operation.

[0003] In recent years, the public's demand for online office and online learning has increased. Consumers are using tablet external keyboards more and more frequently, and are becoming more and more demanding about the user experience of tablet external keyboards. Among them, the flexibility of using external keyboards is particularly important.

[0004] In order to make the use of the external keyboard more flexible, an independent battery is set inside the keyboard for power supply. However, as an energy storage element, the battery has certain risks. Therefore, the safety requirements of the tablet computer keyboard battery position need to be carefully considered during the design to meet the anti-impact ability of the keyboard battery position during use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a composite board for an external keyboard for a tablet computer, which can locally reinforce the keyboard battery position and has the advantages of improving the impact resistance of the keyboard battery position and enhancing safety in use.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a composite board for an external keyboard of a tablet computer, comprising a composite layer and a frame arranged on the periphery of the composite layer;

[0007] The composite layer includes a first outer skin layer, a core layer and a second outer skin layer arranged in sequence from bottom to top, the core layer is provided with a through hole corresponding to the keyboard battery position, a steel sheet is installed on the through hole, and the steel sheet is arranged in coordination with the through hole;

[0008] The first outer skin layer, the core board layer and the second outer skin layer are all connected to the frame.

[0009] In one embodiment, the first outer skin layer and the second outer skin layer each include one of a glass fiber reinforced epoxy resin composite material layer, a carbon fiber reinforced epoxy resin composite material layer and a Kevlar fiber reinforced epoxy resin composite material layer.

[0010] In one embodiment, the steel sheet is a steel sheet that has been treated with a surface roughening treatment or a surface coupling agent.

[0011] In one embodiment, the thickness of the steel sheet is smaller than the thickness of the core plate layer.

[0012] In one of the embodiments, the through hole and the steel sheet are both provided in plurality, and the plurality of through holes and the plurality of steel sheets are provided in one-to-one correspondence.

[0013] In one embodiment, the core layer is made of a low-density material, and the density of the low-density material is 0.03-1.5 g / cm 3 .

[0014] In one embodiment, the core board layer is a low-density epoxy glass fiber board filled with hollow glass microspheres.

[0015] In one embodiment, the frame is an injection molded design.

[0016] In one embodiment, the outer peripheries of the first outer skin layer, the core plate layer and the second outer skin layer are all provided with grooves matching with the frame.

[0017] In one embodiment, the thickness of the first outer skin layer and the second outer skin layer is 0.1-0.4 mm, and the thickness of the core plate layer is 0.6-1.0 mm.

[0018] The above composite board for an external keyboard of a tablet computer has the following beneficial effects:

[0019] First, the strength of the composite board is enhanced by designing a multi-layer composite structure, and a through hole corresponding to the keyboard battery position is opened on the core board layer in the middle, and a reinforcing steel sheet is arranged on the through hole to locally reinforce the keyboard battery position, thereby improving the anti-impact ability of the keyboard battery position and improving the safety of using external keyboards with built-in batteries;

[0020] Secondly, the core layer adopts low-density material and is filled with hollow glass microspheres, making the composite board light and high-strength.

[0021] Thirdly, the steel sheet used in the utility model is a steel sheet treated with a roughening agent or a coupling agent, which improves the bonding strength with the epoxy resin in the first outer skin layer and the second outer skin layer, making the composite board more firmly bonded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the assembly position of this embodiment;

[0023] Figure 2 is a stereogram of this embodiment;

[0024] Figure 3 It is a top view of this embodiment.

[0025] In the figure: 1, frame; 2, first outer skin layer; 3, core board layer; 31, through hole; 4, second outer skin layer; 5, steel sheet; 6, groove. DETAILED DESCRIPTION

[0026] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] A composite board for an external keyboard of a tablet computer, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a composite layer and a frame 1 arranged on the periphery of the composite layer;

[0032] The composite layer includes a first outer skin layer 2, a core layer 3, and a second outer skin layer 4 arranged in sequence from bottom to top. The core layer 3 is provided with a through hole 31 corresponding to the keyboard battery position, and a steel sheet 5 is installed on the through hole 31, and the steel sheet 5 is arranged in coordination with the through hole 31;

[0033] The first outer skin layer 2 , the core board layer 3 and the second outer skin layer 4 are all connected to the frame 1 .

[0034] The utility model adopts a multi-layer composite structure design to strengthen the strength of the composite board, and opens a through hole 31 corresponding to the keyboard battery position on the middle core board layer 3, and arranges a reinforcing steel sheet 5 on the through hole 31 to locally reinforce the keyboard battery position, thereby improving the impact resistance of the keyboard battery position and improving the safety of using an external keyboard with a built-in battery.

[0035] Specifically, the first outer skin layer 2 and the second outer skin layer 4 include one of a glass fiber reinforced epoxy resin composite material layer, a carbon fiber reinforced epoxy resin composite material layer and a Kevlar fiber reinforced epoxy resin composite material layer. In this embodiment, the material used for the first outer skin layer 2 and the second outer skin layer 4 is an epoxy glass fiber prepreg to provide good bonding strength and a delicate appearance.

[0036] Furthermore, the steel sheet 5 is a steel sheet 5 treated with a surface roughening treatment or a surface coupling agent. By using the steel sheet 5 treated with a roughening treatment or a coupling agent, the bonding strength between the steel sheet 5 and the epoxy resin in the first outer skin layer 2 and the second outer skin layer 4 is improved, so that the composite board is more firmly bonded.

[0037] Specifically, the thickness of the steel sheet 5 is smaller than the thickness of the core plate layer 3 so as to take into account the flatness of the composite plate after hot pressing.

[0038] Specifically, Figure 1As shown, there are multiple through holes 31 and steel sheets 5, and the multiple through holes 31 and the multiple steel sheets 5 are arranged one by one. In this embodiment, there are two through holes 31 and two steel sheets 5, so as to locally reinforce the keyboard battery position.

[0039] Specifically, the core plate layer 3 is made of a low-density material, and the density of the low-density material is 0.03-1.5g / cm 3 , so that the composite board has the characteristics of light weight and high strength.

[0040] Furthermore, the core board layer 3 is a low-density epoxy glass fiber board filled with hollow glass microspheres. By filling the hollow glass microspheres, the composite board has light weight and high strength characteristics, and the cost of the composite board can also be reduced. In addition to using a low-density epoxy glass fiber board filled with hollow glass microspheres, the core board layer 3 can also partially or completely use polymethacrylimide (PMI) foam plastic, because the density of polymethacrylimide foam plastic can be as low as 0.03-0.2g / cm 3 , thereby further reducing the density of the core plate layer 3 and improving its specific strength.

[0041] Specifically, the frame 1 is designed by injection molding.

[0042] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, the outer peripheries of the first outer skin layer 2, the core plate layer 3, and the second outer skin layer 4 are all provided with grooves 6 that match the frame 1. The arrangement of the grooves 6 can improve the bonding force between the frame 1 formed by injection molding and the composite board. In this embodiment, a plurality of grooves 6 are arranged on the outer peripheries of the first outer skin layer 2, the core plate layer 3, and the second outer skin layer 4. And the grooves 6 of the first outer skin layer 2, the core plate layer 3, and the second outer skin layer 4 are all arranged correspondingly.

[0043] Specifically, the thickness of the first outer skin layer 2 and the second outer skin layer 4 is 0.1-0.4 mm, and the thickness of the core plate layer 3 is 0.6-1.0 mm.

[0044] In this embodiment, the composite plate is prepared by the following process:

[0045] First, a through hole 31 required for placing the steel sheet 5 is processed on the low-density epoxy glass fiber board used to form the core board layer 3; secondly, the epoxy glass fiber semi-cured sheet, the low-density epoxy glass fiber board and the steel sheet 5 used to form the first outer skin layer 2 and the second outer skin layer 4 are stacked in the order of epoxy glass fiber semi-cured sheet-low-density epoxy glass fiber board with steel sheet 5-epoxy glass fiber semi-cured sheet from bottom to top; then the stacked panels are placed in a vacuum hot press for hot pressing, and the hot-pressed panels are finely carved (CNC processing), and a frame 1 is injection-molded on the periphery of the composite panel to shape it to obtain a composite panel.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A composite board for an external keyboard of a tablet computer, characterized in that: It comprises a composite layer and a frame arranged on the periphery of the composite layer; The composite layer includes a first outer skin layer, a core layer and a second outer skin layer arranged in sequence from bottom to top, the core layer is provided with a through hole corresponding to the keyboard battery position, a steel sheet is arranged on the through hole, and the steel sheet is arranged in coordination with the through hole; The first outer skin layer, the core board layer and the second outer skin layer are all connected to the frame.

2. A composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The first outer skin layer and the second outer skin layer each include one of a glass fiber reinforced epoxy resin composite material layer, a carbon fiber reinforced epoxy resin composite material layer and a Kevlar fiber reinforced epoxy resin composite material layer.

3. A composite board for an external keyboard of a tablet computer according to claim 2, characterized in that: The steel sheet is a steel sheet that has been subjected to surface roughening treatment or surface coupling agent treatment.

4. The composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The thickness of the steel sheet is smaller than the thickness of the core plate layer.

5. The composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The through holes and the steel sheets are both provided in plurality, and the plurality of through holes and the plurality of steel sheets are provided in one-to-one correspondence.

6. The composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The core layer is made of low-density material, and the density of the low-density material is 0.03-1.5g / cm 3 .

7. The composite board for an external keyboard of a tablet computer according to claim 6, characterized in that: The core board layer is a low-density epoxy glass fiber board filled with hollow glass microspheres.

8. The composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The frame is of injection molding design.

9. The composite board for an external keyboard of a tablet computer according to claim 8, characterized in that: The outer peripheries of the first outer skin layer, the core plate layer and the second outer skin layer are all provided with grooves matched with the frame.

10. The composite board for an external keyboard of a tablet computer according to claim 1, characterized in that: The thickness of the first outer skin layer and the second outer skin layer is 0.1-0.4 mm, and the thickness of the core plate layer is 0.6-1.0 mm.

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