A keyboard protective sleeve device

Abstract

This utility model discloses a keyboard protective cover device, comprising: a first plate; a second plate flexibly connected to one side of the first plate; a keyboard module disposed on the first plate, and a positioning groove and a receiving cavity disposed on one side of the first plate located from the keyboard module; an attachment portion flexibly disposed on the side of the second plate away from the first plate, the attachment portion being connected to an electronic device; in the stored state, the second plate is disposed in the receiving cavity, and the electronic device is brought into contact with the first plate and closed through the attachment portion, thus protecting the screen and keyboard module of the electronic device; in the supported state, multiple sections of the second plate are moved out of the receiving cavity, so that the attachment portion abuts against the positioning groove, forming a support structure to support the electronic device; the second plate is folded and adsorbed into the receiving cavity, the thickness of the second plate just fills the receiving cavity of the first plate, so that the inner and outer surfaces of the first plate remain flat, without discontinuities or steps, and the second plate does not increase the thickness of the first plate, reducing the weight by 30%, making it convenient for daily use and carrying.

Description

Technical Field

[0001] This utility model relates to the field of keyboard protective cover products, and in particular to a keyboard protective cover device. Background Technology

[0002] Keyboard cases are mostly used for electronic products such as tablets, e-readers, or handwriting devices. Existing keyboard cases consist of a cover plate, a base plate, and a flexible part, with the keyboard integrated inside the cover plate. This one-piece keyboard case has a complete structure and is easy to use, but the presence of the base plate increases the overall weight and reduces portability.

[0003] Keyboard covers typically use magnetic connections, primarily for easy disassembly. However, magnetic attraction is less effective against lateral sliding or vibration pull. The attraction is mainly in the vertical (normal) direction, rather than being designed to withstand tension or shear forces, making electronic devices prone to falling and breaking.

[0004] The double-layer thickness of the keyboard stacking structure in front-cover keyboard cases (with a cover but no base, similar to the iPad Smart Keyboard) requires the cover to be divided into four parts, each connected by flexible sections for easy bending and folding. The four parts are: a side-mounted suction module and three support plates. The keyboard module is connected to the outermost support plate via the flexible sections. To close the case, the keyboard module must be folded and magnetically attached to the inside of the cover; therefore, the thickness when folded is: the cover itself + the keyboard thickness. Furthermore, the keyboard is only attached to two support plates, while the third support plate is attached to the screen, creating a vertical difference and resulting in an uneven surface on the cover. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a keyboard protective cover device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a keyboard protective cover device, which, by connecting to an electronic device, simultaneously protects the screen and the inner keyboard module of the electronic device, comprising:

[0007] First component;

[0008] A second plate is flexibly connected to one side of the first plate;

[0009] The first board is provided with a keyboard module, and the first board is provided with a positioning groove and a receiving cavity on one side of the keyboard module;

[0010] The second plate is configured as multiple segments, which are folded and stored inside the receiving cavity;

[0011] The second plate has a flexible attachment portion on the side away from the first plate, and the attachment portion is connected to an electronic device;

[0012] In the stored state, the second plate is disposed in the receiving cavity, and the electronic device is brought into contact with and closed by the attachment part to protect the keyboard module;

[0013] In the supported state, multiple sections of the second plate are moved out of the receiving cavity, so that the attachment part abuts against the positioning groove to form a support structure to support the electronic device.

[0014] As a further description of the above technical solution: the second plate includes a support portion and a tension limiting portion, the support portion is flexibly connected to the first plate, and the side of the support portion facing away from the first plate is flexibly connected to the tension limiting portion.

[0015] As a further description of the above technical solution: the support part includes a first inner lining plate, the tension limiting part includes a second inner lining plate, there is a gap between the first inner lining plate and the second inner lining plate, which are connected by a covering member and embedded inside the covering member, so that the first inner lining plate and the second inner lining plate can be bent.

[0016] As a further description of the above technical solution: the attachment part is connected to the tension limiting part through the covering member. In the storage state, the support part is bent and contacts the receiving cavity. The tension limiting part is located outside the support part, and the attachment part extends to the outside of the receiving cavity.

[0017] As a further description of the above technical solution: the attachment part includes a hook strip, the hook strip is provided with buckles on both sides, the hook strip is provided with a spring probe in the middle, the spring probe is provided with hooks on both sides, and the buckles are provided with guide grooves on their side ends.

[0018] As a further description of the above technical solution: a first magnetic attraction component is provided at the four corners of the first plate, a second magnetic attraction component is provided inside the positioning groove, and a third magnetic attraction component is provided inside the receiving cavity.

[0019] As a further description of the above technical solution: a fourth magnetic suction component is provided on the inner side of the support part, and a fifth magnetic suction component is provided on the inner side of the tension limiting part. The positions of the fourth magnetic suction component and the fifth magnetic suction component correspond to the position of the third magnetic suction component when stored.

[0020] As a further description of the above technical solution: the hook bar is provided with a sixth magnetic attraction component, and in the supported state, the sixth magnetic attraction component corresponds to the position of the second magnetic attraction component.

[0021] As a further description of the above technical solution: the electronic device is provided with a seventh magnetic component, the seventh magnetic component being positioned corresponding to the first magnetic component.

[0022] As a further description of the above technical solution: an electrical contact is provided on one side of the electronic device, the electrical contact being electrically connected to the spring probe; first sockets are provided on both sides of the electronic device, the first sockets cooperating with the buckle; and second sockets are provided on both sides of the electrical contact, the second sockets cooperating with the hook.

[0023] The above technical solution has the following advantages or beneficial effects:

[0024] 1. By setting a first plate and a bendable second plate, the second plate is folded and adsorbed into the receiving cavity. The thickness of the second plate is just enough to fill the receiving cavity of the first plate, so that the inner and outer surfaces of the first plate remain flat, without discontinuities or steps. Moreover, the second plate does not increase the thickness of the first plate, reducing the weight by 30%, which is convenient for daily use and carrying.

[0025] 2. By setting up an attachment part to insert electronic devices for connection, and using magnetic components for adsorption connection, it can resist normal tensile force and shear force, and provide a firm and stable connection even under severe vibration conditions. Attached Figure Description

[0026] Figure 1 This is a perspective view of the keyboard protective cover device proposed in this utility model.

[0027] Figure 2 The keyboard protective cover device proposed in this utility model is shown in its stored state in three dimensions. Figure 1 ;

[0028] Figure 3 This is a cross-sectional view of the keyboard protective cover device proposed in this utility model in its stored state.

[0029] Figure 4 The keyboard protective cover device proposed in this utility model is shown in its stored state in three dimensions. Figure 2 ;

[0030] Figure 5 A perspective view of the keyboard protective cover device proposed in this utility model.

[0031] Figure 6 This is a perspective view of the electronic device in this utility model;

[0032] Figure 7 This is a partial cross-sectional view of the first and second sockets of the electronic device in this utility model;

[0033] Figure 8 This is a front view of the electronic device in this utility model;

[0034] Figure 9 This is a perspective view of the keyboard protective cover device and its connection to the electronic device in this utility model;

[0035] Figure 10 This is a partial cross-sectional view showing the connection between the keyboard protective cover device and the electronic device in this utility model;

[0036] Figure 11 This is a perspective view of the keyboard protective cover device in this utility model connected to an electronic device in a supported state;

[0037] Figure 12 This is a side view of the keyboard protective cover device in this utility model connected to an electronic device in a supported state;

[0038] Figure 13 This is a partially enlarged view of the keyboard protective cover device in this utility model connected to the electronic device in a supported state;

[0039] Figure 14 This is a perspective view of the keyboard protective cover device and the electronic device in the present invention in a closed configuration;

[0040] Figure 15 This is a side view of the keyboard protective cover device and the electronic device in this utility model when closed.

[0041] Figure 16 This is a front view of the attachment portion in this utility model.

[0042] Legend:

[0043] 1. First plate; 11. Positioning groove; 12. Receiving cavity; 13. First magnetic suction assembly; 14. Second magnetic suction assembly; 15. Third magnetic suction assembly; 2. Second plate; 21. Support part; 211. First inner lining plate; 22. Tension limiting part; 221. Second inner lining plate; 23. Covering part; 24. Fourth magnetic suction assembly; 25. Fifth magnetic suction assembly; 3. Keyboard module; 4. Attachment part; 41. Hook strip; 42. Buckle; 421. Guide groove; 43. Spring probe; 44. Hook; 45. Sixth magnetic suction assembly; 5. Electronic device; 51. Seventh magnetic suction assembly; 52. Electrical contact; 53. First socket; 531. Elastic locking piece; 532. Screw; 533. Guide boss; 54. Second socket; 541. Locking slider; 542. Return spring. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Reference Figures 1-16 This utility model provides an embodiment of a keyboard protective cover device, which, by connecting to an electronic device 5, simultaneously protects the screen and the inner keyboard module 3 of the electronic device 5. The device includes: a first plate 1; a second plate 2 flexibly connected to one side of the first plate 1; a keyboard module 3 disposed on the first plate 1, with a positioning groove 11 and a receiving cavity 12 on one side of the first plate 1 near the keyboard module 3; the second plate 2 is configured as multiple segments, which are folded and stored within the receiving cavity 12; an attachment portion 4 flexibly disposed on the side of the second plate 2 away from the first plate 1, the attachment portion 4 being connected to the electronic device 5; in the stored state, the second plate 2 is disposed within the receiving cavity 12, and the attachment portion 4 causes the electronic device 5 to contact and close with the first plate 1, protecting the keyboard module 3; in the supported state, the multiple segments of the second plate 2 move out of the receiving cavity 12, causing the attachment portion 4 to abut against the positioning groove 11, forming a support structure to support the electronic device 5.

[0046] In this embodiment, a keyboard module 3 is integrated into the first plate 1 by setting a first plate 1 and a bendable second plate 2. One side of the first plate 1 is connected to the second plate 2 via a flexible connection; a positioning groove 11 is provided on the surface to fix the attachment part 4 in the supported state, and the receiving cavity 12 places the second plate 2 in the stored state. The keyboard module 3 is fixed on the first plate 1. The metal frame of the keyboard module 3 (not shown in the figure) is hollow and is installed from top to bottom to press the keyboard module 3 and fix it to the first plate 1. The covering part 23 covers the top and bottom surfaces, and the keycaps are installed through the holes and pressed into the keyboard module 3. The first plate 1 can be made of fiberglass board or other rigid materials, and the components of the keyboard module 3 can be connected and fixed by hot melt adhesive, liquid adhesive, etc.

[0047] Reference Figures 1-4 The second plate 2 adopts a segmented design and can be folded and stored in the receiving cavity 12. By folding the second plate 2 and adsorbing it into the receiving cavity 12, the thickness of the second plate 2 just fills the receiving cavity 12 of the first plate 1, so that the inner and outer surfaces of the first plate 1 remain flat, without discontinuities or steps, and the second plate 2 does not increase the thickness of the first plate 1, reducing the weight by 30%, making it convenient for daily use and carrying.

[0048] Reference Figures 11-13The second plate 2 includes a support part 21 and a tension limiting part 22. The support part 21 is flexibly connected to the first plate 1, and the side of the support part 21 facing away from the first plate 1 is flexibly connected to the tension limiting part 22.

[0049] In this embodiment, one end of the support part 21 is flexibly connected to the first plate 1. When unfolded, it bears most of the weight of the electronic device 5. Its length and rigidity determine the support height. The tension limiting part 22, through its flexible connection with the support part 21, assists in adjusting the support tilt angle. When switching from the storage state to the use state, the tension limiting part 22 first moves out of the receiving cavity 12 and unfolds, driving the support part 21 to move out simultaneously. As the angle between the support part 21 and the first plate 1 increases, the tension limiting part 22 bends towards the first plate 1 through its own flexible connection characteristics. The tension limiting part 22 mainly limits the angle formed between the support part 21 and the first plate 1 to avoid the opening angle being too large. Finally, with the fixation of the attachment part 4 and the positioning groove 11, the tension limiting part 22, the support part 21 and the first plate 1 form a stable angle, forming a triangular support structure for supporting the electronic device 5.

[0050] The support part 21 includes a first inner liner plate 211, and the tension limiting part 22 includes a second inner liner plate 221. There is a gap between the first inner liner plate 211 and the second inner liner plate 221. The support part 21 is connected by a covering member 23 and embedded in the inner side of the covering member 23, so that the first inner liner plate 211 and the second inner liner plate 221 can be bent.

[0051] In this embodiment, the first inner lining plate 211 and the second inner lining plate 221 serve as a supporting frame, providing the rigid foundation required for the support part 21 and the tension limiting part 22, ensuring that they are not easily deformed when supporting electronic devices. A gap exists between the first inner lining plate 211 and the second inner lining plate 221, providing necessary space for bending and preventing structural jamming or damage caused by mutual compression. The first inner lining plate 211 and the second inner lining plate 221 are integrated into one unit by the covering member 23, forming a continuous second plate 2. When unfolding or folding is required, the covering member 23 deforms at the gap, causing the first inner lining plate 211 and the second inner lining plate 221 to rotate relative to each other, realizing the bending adjustment of the second plate 2. The materials of the first inner lining plate 211 and the second inner lining plate 221 can be lightweight fiberglass board, plastic board, cardboard, or other materials with a certain degree of rigidity. The covering member 23 can be made of a softer material with high tensile strength, such as PU leather, canvas, or nylon.

[0052] The attachment part 4 is connected to the tension limiting part 22 via the covering part 23. In the stored state, the support part 21 is bent and contacts the receiving cavity 12. The tension limiting part 22 is located outside the support part 21, and the attachment part 4 extends to the outside of the receiving cavity 12.

[0053] In this embodiment, the covering 23 not only wraps the first inner liner 211 and the second inner liner 221, but also extends to the attachment part 4, forming a continuous structure from the support part 21 to the tension limiting part 22 and then to the attachment part 4, avoiding gaps in the splicing of multiple parts. The attachment part 4 extends to the outside of the receiving cavity 12, which not only retains the ability to connect with the electronic device 5, but also reserves space for the magnetic fixation of the electronic device 5 when it is closed through the outward extension design, ensuring that the electronic device 5 can fit tightly with the first plate 1.

[0054] Reference Figure 16 The attachment part 4 includes a hook strip 41, with buckles 42 on both sides of the hook strip 41, a spring probe 43 in the middle of the hook strip 41, hooks 44 on both sides of the spring probe 43, and a guide groove 421 on the side end of the buckle 42.

[0055] In this embodiment, the hook strip 41 is used to connect and fix to the electronic device 5, and the spring probe 43 is used to make electrical connections with the electrical contact 52 on the electronic device 5. The electronic device 5 can supply power to the keyboard module 3 through this link. The spring probe 43 can be a Pogo Pig, a conductive spring, etc. The hook strip 41 is covered by a covering 23, which can be glued. The hook strip 112 has a buckle 42 and a hook 44. The covering 23 needs to be punched at the corresponding positions so that the buckle 42 and the hook 44 can pass through.

[0056] Reference Figure 5 , Figures 12-13 First magnetic assemblies 13 are provided at the four corners of the first plate 1, second magnetic assemblies 14 are provided inside the positioning groove 11, and third magnetic assemblies 15 are provided inside the receiving cavity 12. A fourth magnetic assembly 24 is provided inside the support part 21, and a fifth magnetic assembly 25 is provided inside the tension limiting part 22. The positions of the fourth and fifth magnetic assemblies 24 and 25 correspond to the position of the third magnetic assembly 15 when stored. A sixth magnetic assembly 45 is provided on the hook strip 41, and in the supported state, the sixth magnetic assembly 45 corresponds to the position of the second magnetic assembly 14. A seventh magnetic assembly 51 is provided on the electronic device 5, and the seventh magnetic assembly 51 corresponds to the position of the first magnetic assembly 13.

[0057] In this embodiment, the first magnetic assemblies 13 are distributed at the four corners of the first plate 1, and together with the seventh magnetic assemblies 51 on the back of the electronic device 5, they tightly attach the electronic device to the surface of the first plate, covering and pressing the keyboard module 3 to form a closed protective space, while preventing the electronic device 5 from shaking and falling off during carrying. The second magnetic assemblies 14 are located inside the positioning groove 11 and match the sixth magnetic assemblies 45 on the hook strip 41 of the attachment part 4. The third magnetic assemblies 15 are arranged on the inner wall or bottom of the receiving cavity 12, corresponding to the fourth magnetic assemblies 24 and the fifth magnetic assemblies 25 after the second plate 2 is folded. When stored, the folded second plate 2 is firmly fixed in the receiving cavity 12 by magnetic attraction, preventing it from falling out of the receiving cavity 12 during movement. The magnetic attraction assembly is formed by multiple magnets arranged alternately with N and S poles. Corresponding magnets with opposite polarity are provided to ensure attraction. The second plate 2 is folded and fixed in the receiving cavity 12 of the first plate 1 by magnetic force. The surface of the folded part is flush with the edge of the first plate 1 and does not increase the thickness of the first plate 1.

[0058] Furthermore, a Hall sensor is provided on the electronic device 5. When the magnetic field of the first magnetic attraction component 13 approaches the Hall sensor inside the electronic device, it will trigger the electronic device 5 to enter a sleep state.

[0059] Reference Figures 6-10 An electrical contact 52 is provided on one side of the electronic device 5, which is electrically connected to the spring probe 43. First sockets 53 are provided on both sides of the electronic device 5, which cooperate with the buckle 42. Second sockets 54 are provided on both sides of the electrical contact 52, which cooperate with the hook 44.

[0060] In this embodiment, the electrical contact 52 serves as the data interface of the electronic device, forming an elastic electrical connection with the spring probe 43 of the attachment part 4. When the electronic device mates with the attachment part, the spring probe, under its own elastic force, tightly abuts against the electrical contact, ensuring signal transmission between the keyboard module 3 and the electronic device while also accommodating slight assembly errors and avoiding interface wear caused by rigid contact.

[0061] The first sockets 53 on both sides of the electronic device 5 form a symmetrical mechanical lock with the latches 42 on both sides of the attachment part. During docking, the latches 42 elastically engage with the first sockets 53 to prevent lateral detachment due to shaking or collision during use. The first sockets 53 are elastic latches, and the two first sockets 53 are mirror images of each other. Internally, they contain elastic locking pieces 531, screws 532, and guide bosses 533. When not assembled, the elastic locking pieces 531 are not deformed under force, and the screws 532 secure them. The second socket 54 is a self-locking latch, including a locking slider 541 and a return spring 542. A pen holder is also provided on the side of the electronic device 5 for inserting a stylus.

[0062] Reference Figure 10 Align the buckles 42 and hooks 44 of the hook strip 41 with the first socket 53 and the second socket 54 of the electronic device 5, then insert and press the attachment part 4 firmly. The button resets to complete the installation. A cross-sectional view of the inside of the electronic device 5 after connection is shown. During the insertion process, the curved surface in front of the hook 44 contacts the inclined surface of the boss on the locking slider 541, causing the locking slider 541 to press down the return spring 542. After being inserted to the bottom, the locking slider 541 automatically rebounds and rises under the elastic force of the return spring 542, causing the boss to engage with the notch of the hook 44, achieving the locking function. At the same time, the sharp corners of the elastic locking pieces 531 of the first socket 53 on both sides will also engage with the guide grooves 421 corresponding to the buckles 42, applying a certain clamping force on both sides to prevent the corners from being stressed, thus preventing the hook strip 41 from being bent and deformed. The unlocking method is to press the button on the back of the electronic device 5 that is connected to the locking slider 541, move the locking slider 541 down to unlock the hook 44, and there are detachable buckles 42 on both sides. Pull the attachment part 4 outward to complete the disassembly.

[0063] In another embodiment, the first plate 1 may serve only as a protective cover and be connected to the electronic device 5 without a keyboard module 3. A rigid liner is made, and the hook strip 41 and the liner are wrapped together with a flexible material to form a protective cover.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A keyboard protective cover device, characterized in that, By connecting to the electronic device (5), the screen of the electronic device (5) and the inner keyboard module (3) are protected simultaneously, including: First plate (1); A second plate (2) is flexibly connected to one side of the first plate (1); The first plate (1) is provided with a keyboard module (3), and the first plate (1) is provided with a positioning groove (11) and a receiving cavity (12) on one side of the keyboard module (3); The second plate (2) is configured as multiple segments, which are folded and stored in the receiving cavity (12); The second plate (2) has a flexible attachment part (4) on the side away from the first plate (1), and the attachment part (4) is connected to the electronic device (5); In the stored state, the second plate (2) is disposed in the receiving cavity (12), and the electronic device (5) is brought into contact with the first plate (1) and closed through the attachment part (4) to protect the keyboard module (3); In the supported state, multiple segments of the second plate (2) move out of the receiving cavity (12), so that the attachment part (4) abuts against the positioning groove (11) to form a support structure to support the electronic device (5).

2. The keyboard protective cover device according to claim 1, characterized in that: The second plate (2) includes a support part (21) and a tension limiting part (22). The support part (21) is flexibly connected to the first plate (1), and the side of the support part (21) facing away from the first plate (1) is flexibly connected to the tension limiting part (22).

3. The keyboard protective cover device according to claim 2, characterized in that: The support part (21) includes a first inner lining plate (211), and the tension limiting part (22) includes a second inner lining plate (221). There is a gap between the first inner lining plate (211) and the second inner lining plate (221). They are connected by a covering member (23) and embedded inside the covering member (23), so that the first inner lining plate (211) and the second inner lining plate (221) can be bent.

4. The keyboard protective cover device according to claim 3, characterized in that: The attachment (4) is connected to the tension limiting part (22) through the covering (23). In the stored state, the support part (21) is bent and contacts the receiving cavity (12). The tension limiting part (22) is located outside the support part (21), and the attachment part (4) extends to the outside of the receiving cavity (12).

5. The keyboard protective cover device according to claim 3, characterized in that: The attachment part (4) includes a hook strip (41), with buckles (42) on both sides of the hook strip (41), a spring probe (43) in the middle of the hook strip (41), hooks (44) on both sides of the spring probe (43), and a guide groove (421) on the side end of the buckle (42).

6. The keyboard protective cover device according to claim 5, characterized in that: The first plate (1) is provided with a first magnetic attraction component (13) at its four corners, a second magnetic attraction component (14) is provided inside the positioning groove (11), and a third magnetic attraction component (15) is provided inside the receiving cavity (12).

7. The keyboard protective cover device according to claim 6, characterized in that: The support part (21) is provided with a fourth magnetic suction component (24) on its inner side, and the tension limiting part (22) is provided with a fifth magnetic suction component (25) on its inner side. The positions of the fourth magnetic suction component (24) and the fifth magnetic suction component (25) correspond to the position of the third magnetic suction component (15) when stored.

8. The keyboard protective cover device according to claim 6, characterized in that: The hook bar (41) is provided with a sixth magnetic attraction component (45), and in the supported state, the sixth magnetic attraction component (45) corresponds to the position of the second magnetic attraction component (14).

9. The keyboard protective cover device according to claim 6, characterized in that: The electronic device (5) is provided with a seventh magnetic attraction component (51), which corresponds to the position of the first magnetic attraction component (13).

10. The keyboard protective cover device according to claim 5, characterized in that: An electrical contact (52) is provided on one side of the electronic device (5), which is electrically connected to the spring probe (43). A first socket (53) is provided on both sides of the electronic device (5), which cooperates with the buckle (42). A second socket (54) is provided on both sides of the electrical contact (52), which cooperates with the hook (44).

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