A foldable keyboard case support plate

Abstract

The utility model relates to the technical field of composite board, more specifically, it relates to a foldable keyboard protective sleeve support plate, its technical scheme main points are, include: hinge and two composite layers, two the composite layer is respectively installed in the two sides of hinge, the hinge includes two hinged parts and pin shaft, two the hinged part is through pin shaft rotation connection between, the composite layer with the hinged part fixed connection, the composite layer includes by the first skin, core plate and second skin of sequentially stacking from below to above, the side of core plate towards second skin is equipped with mounting hole, the hinged part is set in mounting hole, and with the lower surface of second skin is combined, the first skin the core plate with second skin is through hot pressing composite forming. The utility model will hinge's hinged part be embedded and press in between core plate and second skin, and make three close combination through hot press forming, have the advantage that the structure is firm, stable.

Description

Technical Field

[0001] This utility model relates to the technical field of composite materials, and more specifically, to a foldable keyboard protective cover support plate. Background Technology

[0002] Currently, keyboard cover support plates for consumer electronics products such as tablets generally adopt a combination structure of a base plate and a rotating hinge to achieve a folding effect. That is, hinge mounting holes are first machined on the base plate by CNC machining, and then the hinge is glued to the base plate by dispensing. The adhesive is then heated and cured to achieve fixation, thus obtaining a foldable support plate.

[0003] However, the aforementioned support plate has significant drawbacks: the adhesive bonding strength is low, and the hinge is prone to detachment when subjected to reverse rotation or drop impact; in addition, the aging of the adhesive layer will increase the risk of structural failure. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a foldable keyboard protective cover support plate, which has the advantages of stable structure and sturdiness.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a foldable keyboard protective cover support plate, comprising: a hinge and two composite layers, wherein the two composite layers are respectively disposed on both sides of the hinge;

[0006] The hinge includes two hinge parts and a pin. The two hinge parts are rotatably connected by the pin, and the composite layer is fixedly connected to the hinge parts.

[0007] The composite layer includes a first outer skin, a core board, and a second outer skin stacked sequentially from bottom to top. The core board has a mounting hole on the side facing the second outer skin. The hinge part is engaged in the mounting hole and is in contact with the lower surface of the second outer skin. The first outer skin, the core board, and the second outer skin are formed by hot pressing.

[0008] In one embodiment, the core board is made of a low-density material with a density of 0.7-1.6 g / cm³. 3 .

[0009] In one embodiment, the core board is an epoxy fiberglass board or a polymethacrylamide foam board filled with hollow glass microspheres.

[0010] In one embodiment, both the first outer skin and the second outer skin are epoxy fiberglass semi-cured sheets.

[0011] In one embodiment, the core board is provided with a through positioning hole for machining a positioning reference;

[0012] The core board is also provided with reserved holes for placing protective cover accessories.

[0013] In one embodiment, the core board has a thickness of 0.5-5 mm, and the first outer skin and the second outer skin both have a thickness of 0.05-0.5 mm.

[0014] In one embodiment, the first outer skin and the second outer skin have the same thickness.

[0015] In one embodiment, the hinge portion includes a plurality of hinge blades spaced apart, and a plurality of mounting holes are spaced apart, with each mounting hole corresponding to one of the plurality of hinge blades.

[0016] In one embodiment, the thickness of the hinge leaf is 0.1-1 mm.

[0017] In one embodiment, the hinge is made of stainless steel.

[0018] The aforementioned foldable keyboard cover support plate has the following beneficial effects:

[0019] This invention embeds the hinge portion of the hinge between the core plate and the outer skin, and uses hot pressing to tightly bond the three together, forming a strong mechanical engagement and physical constraint between the hinge and the composite layer. This greatly improves the hinge's resistance to pull-out, shearing, and torsion, effectively resists stress generated under conditions such as reverse rotation and accidental drops, significantly reduces the risk of separation between the hinge and the composite layer, and enhances the product's durability and service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the assembly relationship between the core board and the hinge in this utility model.

[0022] Figure 3 This is a cross-sectional structural diagram of the composite layer and hinge in this utility model.

[0023] In the diagram: 1. Hinge; 11. Hinge joint; 12. Pin; 2. Composite layer; 21. First outer skin; 22. Core board; 221. Mounting hole; 23. Second outer skin; 3. Positioning hole; 4. Reserved hole; 5. Protective sleeve accessories. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] A foldable keyboard cover support plate, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes: a hinge 1 and two composite layers 2, with the two composite layers 2 respectively installed on both sides of the hinge 1;

[0030] The hinge 1 includes two hinge parts 11 and a pin 12. The two hinge parts 11 are rotatably connected by the pin 12, and the composite layer 2 is fixedly connected to the hinge parts 11.

[0031] The composite layer 2 includes a first outer skin 21, a core board 22, and a second outer skin 23 stacked sequentially from bottom to top. The core board 22 has a mounting hole 221 on the side facing the second outer skin 23. The hinge part 11 is engaged in the mounting hole 221 and is in contact with the lower surface of the second outer skin 23. The first outer skin 21, the core board 22, and the second outer skin 23 are formed by hot pressing.

[0032] This invention embeds the hinge portion 11 of the hinge 1 between the core plate 22 and the outer skin, and uses hot pressing to tightly bond the three together, so that the hinge 1 and the composite layer 2 form a strong mechanical engagement and physical constraint, which greatly improves the hinge 1's resistance to pull-out, shearing and torsion, effectively resists the stress generated under working conditions such as reverse rotation and accidental drop, significantly reduces the risk of the hinge 1 separating from the composite layer 2, and improves the product's durability and service life.

[0033] Specifically, the core board 22 is made of a low-density material with a density of 0.7-1.6 g / cm³. 3 This reduces the overall weight of the support plate, making the product lighter, easier to carry and move, and improving the user experience.

[0034] Furthermore, the core board 22 is an epoxy fiberglass board or a polymethacrylamide foam board filled with hollow glass microspheres. The epoxy fiberglass board provides basic strength, while the hollow glass microspheres, as a lightweight filler, reduce density while providing good compressive and bending stiffness, preventing the keyboard area from collapsing and deforming during use. The polymethacrylamide foam board (PMI foam board) has excellent specific strength and specific stiffness, providing excellent compressive and bending performance at a very light weight, ensuring that the keyboard cover remains flat and stable when opened, closed, and pressed, and will not easily bend.

[0035] Specifically, both the first outer skin 21 and the second outer skin 23 are epoxy fiberglass prepreg sheets. Compared with the traditional adhesive bonding of the hinge 1 and the support plate, using epoxy fiberglass prepreg sheet as the second outer skin 23 allows for tight bonding between the core plate 22 and the hinge 1. After thermoforming, the hinge part 11 is confined between the core plate 22 and the second outer skin 23, resulting in a stronger and more stable bond. In addition, using epoxy fiberglass prepreg sheet as the outer skin makes the surface of the composite layer 2 smoother; when the core plate 22 is an epoxy fiberglass board filled with hollow glass microspheres, the epoxy fiberglass prepreg sheet is also an epoxy fiberglass board, and the bonding of the same material is better.

[0036] Specifically, such as Figure 2As shown, a through positioning hole 3 is provided on the side of the core plate 22 away from the hinge 1, which is used as a positioning reference for CNC machining of the mounting hole 221 during actual production.

[0037] like Figure 2 and Figure 3 As shown, the core board 22 is also provided with reserved holes 4 for placing and embedding protective sleeve accessories 5. In practical applications, protective sleeve accessories 5 are mostly magnets or other embedded parts.

[0038] Specifically, the core board 22 has a thickness of 0.5-5mm, and the first outer skin 21 and the second outer skin 23 both have a thickness of 0.05-0.5mm. In practical applications, a core board 22 thickness <0.5mm would not provide sufficient support, while a thickness >5mm would not meet the requirements for thinness and lightness in consumer electronics. The first outer skin 21 and the second outer skin 23 mainly serve to improve the appearance and fix the hinge part 11. A thickness <0.05mm would affect the bonding effect and surface appearance, while a thickness >0.5mm would easily lead to overall weight imbalance. Furthermore, the first outer skin 21 and the second outer skin 23 have the same thickness.

[0039] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the hinge portion 11 includes multiple hinge leaves spaced apart, and multiple mounting holes 221 are spaced apart, with each mounting hole 221 corresponding to one of the multiple hinge leaves. In practical applications, the upper surface of the core board 22 in each composite layer 2 is provided with multiple mounting holes 221 spaced apart, and all mounting holes 221 are located on the side close to the hinge 1. Each hinge portion 11 is composed of multiple hinge leaves spaced apart, and each hinge leaf is installed in its respective mounting hole 221, making the hinge 1 and the composite layer 2 more firmly bonded.

[0040] Furthermore, the thickness of the hinge is 0.1-1mm, which is 1 / 5 of the thickness of the core board 22.

[0041] Specifically, hinge 1 is made of stainless steel.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A foldable keyboard protective cover support plate, characterized in that, include: A hinge and two composite layers, the two composite layers being respectively disposed on both sides of the hinge; The hinge includes two hinge parts and a pin. The two hinge parts are rotatably connected by the pin, and the composite layer is fixedly connected to the hinge parts. The composite layer includes a first outer skin, a core board, and a second outer skin stacked sequentially from bottom to top. The core board has a mounting hole on the side facing the second outer skin. The hinge part is engaged in the mounting hole and is in contact with the lower surface of the second outer skin. The first outer skin, the core board, and the second outer skin are formed by hot pressing.

2. The foldable keyboard protective cover support plate according to claim 1, characterized in that: The core board is made of a low-density material with a density of 0.7-1.6 g / cm³. 3 .

3. The foldable keyboard protective cover support plate according to claim 2, characterized in that: The core board is an epoxy fiberglass board or a polymethacrylamide foam board filled with hollow glass microspheres.

4. The foldable keyboard protective cover support plate according to claim 1, characterized in that: Both the first outer skin and the second outer skin are epoxy fiberglass semi-cured sheets.

5. The foldable keyboard protective cover support plate according to claim 1, characterized in that: The core board is provided with a through positioning hole for machining positioning reference; The core board is also provided with reserved holes for placing protective cover accessories.

6. The foldable keyboard protective cover support plate according to claim 1, characterized in that: The core board has a thickness of 0.5-5mm, and the first outer skin and the second outer skin both have a thickness of 0.05-0.5mm.

7. A foldable keyboard protective cover support plate according to claim 6, characterized in that: The first outer skin and the second outer skin have the same thickness.

8. The foldable keyboard protective cover support plate according to claim 1, characterized in that: The hinge portion includes multiple hinge blades spaced apart, and multiple mounting holes are spaced apart, with each mounting hole corresponding to one of the multiple hinge blades.

9. A foldable keyboard protective cover support plate according to claim 8, characterized in that: The thickness of the hinge blade is 0.1-1mm.

10. A foldable keyboard protective cover support plate according to claim 1, characterized in that: The hinge is made of stainless steel.

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