Convenient folding keyboard

Abstract

The utility model discloses portable folding keyboard, comprising main keyboard body, the left and right two end parts of main keyboard body all are connected with the auxiliary keyboard body through the hinge component, still be connected with the wire harness between main keyboard body and auxiliary keyboard body, and the wire harness includes the wire harness spring shape section of being connected with main keyboard body and can be stretched, and the wire harness ribbon section of being connected with auxiliary keyboard body and being linked with wire harness spring shape section. The utility model discloses through setting two auxiliary keyboard bodies of being reversely buckled in main keyboard body, can greatly reduce the overall width of equipment under the storage state, make its small and exquisite, and portable. Under the unfolded state, auxiliary keyboard body and main keyboard body can stably be in the same horizontal plane, and jointly constitute a complete, and the standard keyboard operating area of meeting user's use habit, fundamentally overcome the problem of the poor input experience of the existing folding keyboard because of the unstable structure or the key area fragmentation.

Description

Technical Field

[0001] This utility model relates to the field of keyboard technology, and in particular to a portable folding keyboard. Background Technology

[0002] As a core computer input device, the keyboard is an indispensable human-computer interaction interface in modern information technology. Traditional keyboards, whether based on membrane or mechanical switches, offer a mature typing feel and high input efficiency, making them widely applicable to desktop computers, workstations, and other fixed environments. Their standardized key layout (such as the QWERTY layout) and rich function keys (such as F1-F12 and arrow keys) give them an irreplaceable position in professional fields such as text processing, programming development, and data entry.

[0003] However, with the rapid development of mobile computing technology, portable electronic devices such as smartphones and tablets have become an important part of people's daily work and entertainment. Although these devices are equipped with touchscreens for input, touchscreen input has inherent drawbacks for large-scale text input, including easy accidental touches, slow input speed, large screen area occupation, and lack of physical feedback, resulting in low input efficiency and a poor user experience. Against this backdrop, the inherent defects of traditional keyboards in terms of poor portability are amplified dramatically in mobile application scenarios. Specifically, traditional keyboards have a fixed, non-deformable physical structure, are bulky, and take up a lot of space. They are typically over 400 mm long, making them difficult to match with thin and light mobile devices and impossible to conveniently fit into a bag, severely limiting their application in mobile office scenarios. Utility Model Content

[0004] The purpose of this invention is to overcome the aforementioned problems of the prior art and provide a convenient folding keyboard that comprehensively solves the inherent defects of existing products in terms of portability, structural stability, durability, and user experience.

[0005] The objective of this utility model is mainly achieved through the following technical solutions: A portable folding keyboard includes a main keyboard body, and two auxiliary keyboard bodies that can rotate relative to the main keyboard body are connected to the left and right ends of the main keyboard body via hinge components. The two keyboard bodies can be located on the same horizontal plane as the main keyboard body, and the two keyboard bodies can rotate to cover the top side of the main keyboard body in opposite directions; A wire harness is also connected between the main keyboard body and the sub-keyboard body. The wire harness includes a spring-shaped segment that is connected to the main keyboard body and is stretchable, and a strip-shaped segment that is connected to the sub-keyboard body and is connected to the spring-shaped segment.

[0006] Furthermore, both the left and right ends of the main keyboard body are provided with openings A through which the wire harness strip can pass; The end of the sub-keyboard body has an opening B through which the wire harness strip can pass.

[0007] Furthermore, both the left and right ends of the main keyboard body are provided with recessed grooves A, and the opening A is provided at the recessed grooves A; The end of the sub-keyboard body is provided with a recessed groove B, and the opening B is located at the recessed groove B.

[0008] Furthermore, when the two sub-keyboard bodies are rotated to face each other and positioned at the top of the main keyboard body, the two sub-keyboard bodies can completely cover the main keyboard body.

[0009] Furthermore, the main keyboard body has arc-shaped ends A at both its left and right ends, and the two sub-keyboard bodies have arc-shaped ends B at their ends.

[0010] Furthermore, the hinge assembly includes a first pivot connected to the main keyboard body and a second pivot connected to the sub-keyboard body; The same positioning frame is sleeved on both the first and second rotating shafts, and both the first and second rotating shafts can rotate relative to the positioning frame. A transmission gear located between a first rotating shaft and a second rotating shaft is rotatably connected to the positioning frame. A driven gear that meshes with the transmission gear is sleeved on the first rotating shaft, and a driving gear that meshes with the transmission gear is sleeved on the second rotating shaft. The ends of both the first and second rotating shafts are threaded with adjusting nuts. Both the first and second rotating shafts are equipped with torque blocks located between the adjusting nuts and the positioning frame. The adjusting nuts act on the torque blocks, so that the torque blocks can be pressed against the positioning frame.

[0011] Furthermore, the torque assembly includes a friction plate that contacts the adjusting nut and a spacer that contacts the positioning bracket; The torque assembly also includes several torque plates located between the friction plates and the spacers.

[0012] Furthermore, the positioning frame has two positioning plates spaced apart, and two connecting plates spaced apart are connected between the positioning plates; The two ends of the positioning plate are respectively sleeved on the first rotating shaft and the second rotating shaft, and the two ends of the positioning plate near the torque group are provided with stop grooves. The partition plate is connected with a stop section that can slide with the stop groove. The transmission gear is rotatably connected between two connecting plates, and both the driving gear and the driven gear are located between two positioning plates.

[0013] Furthermore, both the first and second rotating shafts have sequentially connected connecting sections, separating sections, sleeve sections, and threaded sections; The adjusting nut is connected to the threaded section, and the positioning bracket is connected to the sleeve section and abuts against the partition section under the combined action of the adjusting nut and the torque assembly.

[0014] Furthermore, the connecting section of the first rotating shaft is connected to a first connecting piece that is connected to the main keyboard body; The connecting section of the second rotating shaft is connected to a second connecting piece that is connected to the sub-keyboard body.

[0015] Furthermore, the first rotating shaft and the second rotating shaft are both fitted with a hinged outer shell that surrounds the positioning frame, the torque assembly, and the adjusting nut; The main keyboard body has a receiving notch A at both the left and right ends to accommodate one end of the hinge shell; The end of the sub-keyboard body is provided with a receiving notch B to accommodate the other end of the hinged outer shell.

[0016] This utility model has the following beneficial effects: 1. This utility model, by setting two auxiliary keyboard bodies that can be reverse-clamped to the main keyboard body, significantly reduces the overall width of the device in the folded state, making it compact and easy to carry. In the unfolded state, the auxiliary keyboard bodies and the main keyboard body can be stably placed on the same horizontal plane, together forming a complete standard keyboard operation area that conforms to user habits, fundamentally overcoming the problem of poor input experience caused by unstable structure or fragmented key areas in existing folding keyboards; 2. This utility model innovatively employs a design combining strip-shaped segments and spring-shaped segments in its wire harness structure. The strip-shaped segments ensure a stable electrical connection between the secondary keyboard and the main keyboard; while the spring-shaped segments effectively absorb and compensate for the displacement generated during the rotation of the secondary keyboard, preventing excessive bending and fatigue damage to the wires. The inclusion of openings A and B effectively constrains the wire harness's movement path, improving its stability and lifespan during repeated expansion and contraction. Furthermore, by arranging the wire harness within recesses A and B, preventing it from protruding beyond the keyboard body, the risk of accidental scratches or pressure damage to the wire harness is significantly reduced, enhancing the overall durability of the product.

[0017] 3. In the hinge assembly described in this utility model, a transmission system consisting of a driving gear, a transmission gear, and a driven gear enables the synchronous reverse rotation of the two keyboard bodies during the unfolding and snapping processes. This design not only makes operation smoother and more symmetrical but also ensures the overall flatness of the keyboard after unfolding. In particular, the torque assembly integrated into the pivot provides a continuous rotational interference force to the pivot, and combined with the adjustable nut, the damping of the rotation can be precisely adjusted. This mechanism effectively prevents accidental shaking or closing of the secondary keyboard bodies during use, ensuring their stability and reliability at any angle (especially when fully unfolded and fully snapped), greatly improving the product's texture and user experience. 4. In this utility model, by setting a positioning plate and a connecting plate, the axial or radial movement of each gear is limited, effectively preventing jamming or abnormal noise caused by gear misalignment during long-term use of the transmission system, and ensuring the long-term accuracy and reliability of the linkage mechanism. At the same time, the hinged outer shell provides comprehensive physical protection for the internal precision hinge components, isolating them from dust and foreign objects. The ingenious design of the receiving notches A and B allows the hinged outer shell to be embedded within the keyboard body, avoiding accidental damage that might be caused by the outer shell protruding outwards, achieving a balance between protection, aesthetics, and portability. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in describing the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments recorded in this utility model. Those skilled in the art can derive other drawings from the following drawings without any creative effort.

[0019] Figures 1 to 3 This is a schematic diagram of the structure of a specific embodiment of the portable folding keyboard described in this utility model when it is stored. Figures 4 to 5 This is a schematic diagram of the structure of a specific embodiment of the portable folding keyboard described in this utility model when it is partially unfolded. Figures 6 to 7 This is a schematic diagram of the structure of a specific embodiment of the portable folding keyboard described in this utility model when fully unfolded. Figure 8 This is a schematic diagram of a specific embodiment of the wiring harness in the portable folding keyboard described in this utility model; Figures 9 to 12 This is a schematic diagram of a specific embodiment of the hinge component in the portable folding keyboard of this utility model; Figure 13 This is a schematic diagram of a specific embodiment of the first hinge in the portable folding keyboard of this utility model.

[0020] The component names corresponding to the reference numerals in the attached drawings are as follows: 1. Main keyboard body; 2. Sub-keyboard body; 3. Wire harness strip segment; 4. Opening A; 5. Opening B; 6. Recessed groove A; 7. Recessed groove B; 8. Arc-shaped end A; 9. Arc-shaped end B; 10. First rotating shaft; 11. Second rotating shaft; 12. Positioning frame; 13. Transmission gear; 14. Driven gear; 15. Driving gear; 16. Adjusting nut; 17. Friction plate; 18. Torque plate; 19. Connecting section; 20. Separating section; 21. Sleeve section; 22. Threaded section; 23. Positioning plate; 24. Connecting plate; 25. First connecting piece; 26. Second connecting piece; 27. Hinge housing; 28. Accommodating notch A; 29. ​​Accommodating notch B; 30. Partition; 31. Stop groove; 32. Stop section; 33. Wire harness spring segment. Detailed Implementation

[0021] To enable those skilled in the art to better understand this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] like Figures 1 to 13 As shown, the portable folding keyboard includes a main keyboard body 1, and the left and right ends of the main keyboard body 1 are connected to a secondary keyboard body 2 that can rotate relative to the main keyboard body 1 via hinge components. The two keyboard bodies 2 can be located on the same horizontal plane as the main keyboard body 1, and the two keyboard bodies 2 can be rotated to cover the top side of the main keyboard body 1 in the opposite direction. A wire harness is also connected between the main keyboard body 1 and the secondary keyboard body 2. The wire harness includes a spring-shaped segment that is connected to the main keyboard body 1 and is stretchable, and a strip-shaped segment 3 that is connected to the secondary keyboard body 2 and is connected to the spring-shaped segment.

[0024] In this embodiment, when it is necessary to carry it, simply rotate the two keyboard bodies 2 so that they snap into place on the main keyboard body 1 in the opposite direction. Figures 1-3 As shown, this reduces the space occupied; when needed, the two keyboard bodies 2 are unfolded so that they are on the same horizontal plane as the main keyboard body 1, as shown. Figure 6 and Figure 7As shown, this design facilitates operation. The wiring harness enables electrical connection between the secondary keyboard body 2 and the main keyboard body 1, and the spring-shaped segment of the harness accommodates the relative displacement between them. The spring-shaped segment is always retracted within the main keyboard body 1, while the strip-shaped segment 3 extends beyond it.

[0025] Preferably, the main keyboard body 1 has openings A4 at both the left and right ends, through which the wire harness strip 3 can pass; The end of the sub-keyboard body 2 has an opening B5 through which the wire harness strip 3 can pass.

[0026] In this embodiment, the openings A4 and B5 can improve the stability of the wire harness strip segment 3 during the stretching or retraction process.

[0027] Preferably, the main keyboard body 1 has recessed grooves A6 at both the left and right ends, and the opening A4 is located at the recessed grooves A6. The end of the sub-keyboard body 2 is provided with a recessed groove B7, and the opening B5 is provided at the recessed groove B7.

[0028] In this embodiment, the recessed grooves A6 and B7 prevent the wire harness strip 3 from protruding outward from the main keyboard body 1 and the secondary keyboard body 2, thus reducing accidental damage to the wire harness strip 3.

[0029] For structural optimization, preferably, when the two sub-keyboard bodies 2 are rotated to face opposite directions and positioned at the top of the main keyboard body 1, the two sub-keyboard bodies 2 can completely cover the main keyboard body 1. In this way, with the same extension length, the width and length occupied by the keyboard when stored can be minimized as much as possible.

[0030] Preferably, the main keyboard body 1 has arc-shaped ends A8 at both its left and right ends, and the two sub-keyboard bodies 2 have arc-shaped ends B9 at their ends.

[0031] In this embodiment, the arrangement of the arc-shaped ends B9 and A8 can reduce the possibility of the secondary keyboard body 2 colliding with the main keyboard body 1 during rotation.

[0032] Preferably, the hinge assembly includes a first pivot 10 connected to the main keyboard body 1 and a second pivot 11 connected to the sub-keyboard body 2; The same positioning frame 12 is sleeved on the first rotating shaft 10 and the second rotating shaft 11, and both the first rotating shaft 10 and the second rotating shaft 11 can rotate relative to the positioning frame 12. A transmission gear 13 located between a first rotating shaft 10 and a second rotating shaft 11 is rotatably connected to the positioning frame 12. A driven gear 14 that meshes with the transmission gear 13 is sleeved on the first rotating shaft 10, and a driving gear 15 that meshes with the transmission gear 13 is sleeved on the second rotating shaft 11. The ends of the first rotating shaft 10 and the second rotating shaft 11 are both threaded with adjusting nuts 16. The first rotating shaft 10 and the second rotating shaft 11 are both provided with torque groups located between the adjusting nuts 16 and the positioning frame 12. The adjusting nuts 16 act on the torque groups so that the torque groups can be pressed against the positioning frame 12.

[0033] In this embodiment, through the arrangement of the driving gear 15, the transmission gear 13, and the driven gear 14, when the secondary keyboard body 2 is rotated, it can drive the main keyboard body 1 to rotate in the opposite direction. The torque group is used to provide rotational interference force for the first rotating shaft 10 and the second rotating shaft 11 to prevent them from shaking unexpectedly and to improve the stability at any angle after rotation. The adjusting nut 16 is used to adjust the magnitude of the interference force of the torque group so that it can seek a balance between the rotation driving force and the rotation positioning force in order to obtain a better user experience.

[0034] To achieve the interference force of the torque group on the first and second rotating shafts, preferably, the torque group includes a friction plate 17 that contacts the adjusting nut 16 and a spacer 30 that contacts the positioning frame 12; The torque assembly also includes several torque plates 18 located between the friction plate 17 and the spacer 30.

[0035] Preferably, the positioning frame 12 has two positioning plates 23 spaced apart, and two connecting plates 24 spaced apart are connected between the positioning plates 23; The two ends of the positioning plate 23 are respectively sleeved on the first rotating shaft 10 and the second rotating shaft 11, and the two ends of the positioning plate 23 near the torque group are provided with stop grooves 31. The partition 30 is connected with a stop section 32 that can slide with the stop groove 31. The transmission gear 13 is rotatably connected between the two connecting plates 24, and the driving gear 15 and the driven gear 14 are both located between the two positioning plates 23.

[0036] In this embodiment, the two positioning plates 23 can provide a limiting function for the axial (relative to the axial direction of the first rotating shaft 10 or the second rotating shaft 11) movement of the driving gear 15 and the driven gear 14; the two connecting plates 24 can provide a limiting function for the radial (relative to the radial direction of the first rotating shaft 10 or the second rotating shaft 11) movement of the transmission gear 13.

[0037] In addition, the stop section 32 and the stop groove 31 can limit the rotation angle of the second rotating shaft 11 relative to the first rotating shaft 10, so as to prevent the sub-keyboard body 2 from rotating excessively.

[0038] Preferably, both the first rotating shaft 10 and the second rotating shaft 11 have a connecting section 19, a separating section 20, a sleeve section 21 and a threaded section 22 connected in sequence; The adjusting nut 16 is connected to the threaded section 22, and the positioning bracket 12 is connected to the sleeve section 21 and abuts against the partition section 20 under the combined action of the adjusting nut 16 and the torque assembly.

[0039] Preferably, the connecting segment 19 of the first rotating shaft 10 is connected to a first connecting piece 25 that is connected to the main keyboard body 1; The connecting section 19 of the second pivot 11 is connected to a second connecting piece 26 that is connected to the sub-keyboard body 2.

[0040] Preferably, the first rotating shaft 10 and the second rotating shaft 11 are both fitted with a hinged outer shell 27 that surrounds the positioning frame 12, the torque group and the adjusting nut 16; The main keyboard body 1 has a receiving notch A28 at both the left and right ends to receive one end of the hinge shell 27. The end of the sub-keyboard body 2 is provided with a receiving notch B29 for receiving the other end of the hinged outer shell 27.

[0041] In this embodiment, the hinge housing 27 is used to protect the functional structures of the hinge assembly, thereby extending its service life. The inclusion notches A28 and B29 prevent the hinge housing 27 from protruding beyond the main keyboard body 1 and the secondary keyboard body 2, thus reducing accidental damage to the hinge housing 27. The first connecting piece 25 and the second connecting piece 26 are located outside the hinge housing 27.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A portable folding keyboard, characterized by: Includes a main keyboard body (1), and the left and right ends of the main keyboard body (1) are connected to a secondary keyboard body (2) that can rotate relative to the main keyboard body (1) via hinge components. The two keyboard bodies (2) can be located on the same horizontal plane as the main keyboard body (1), and the two keyboard bodies (2) can be rotated to cover the top side of the main keyboard body (1) in the opposite direction; A wire harness is also connected between the main keyboard body (1) and the sub-keyboard body (2). The wire harness includes a wire harness spring-shaped segment that is connected to the main keyboard body (1) and is stretchable, and a wire harness strip-shaped segment (3) that is connected to the sub-keyboard body (2) and is connected to the wire harness spring-shaped segment.

2. The portable folding keyboard according to claim 1, characterized in that: Both ends of the main keyboard body (1) are provided with openings A (4) through which the wire harness strip segment (3) can pass. The end of the sub-keyboard body (2) has an opening B (5) through which the wire harness strip segment (3) can pass.

3. The portable folding keyboard according to claim 2, characterized in that: The main keyboard body (1) has recessed grooves A (6) at both ends, and the opening A (4) is located at the recessed grooves A (6). The end of the sub-keyboard body (2) is provided with a recessed groove B (7), and the opening B (5) is provided at the recessed groove B (7).

4. The portable folding keyboard according to claim 1, characterized in that: When the two sub-keyboard bodies (2) are rotated to the opposite side of the top of the main keyboard body (1), the two sub-keyboard bodies (2) can completely cover the main keyboard body (1).

5. The portable folding keyboard according to claim 1, characterized in that: The main keyboard body (1) has arc-shaped ends A (8) on both the left and right ends, and the two sub-keyboard bodies (2) have arc-shaped ends B (9) at their ends.

6. The portable folding keyboard according to any one of claims 1-5, characterized in that: The hinge assembly includes a first pivot (10) connected to the main keyboard body (1) and a second pivot (11) connected to the sub-keyboard body (2). The first rotating shaft (10) and the second rotating shaft (11) are both fitted with the same positioning frame (12), and both the first rotating shaft (10) and the second rotating shaft (11) can rotate relative to the positioning frame (12); A transmission gear (13) located between a first rotating shaft (10) and a second rotating shaft (11) is rotatably connected to the positioning frame (12). A driven gear (14) meshing with the transmission gear (13) is connected to the first rotating shaft (10), and a driving gear (15) meshing with the transmission gear (13) is connected to the second rotating shaft (11). The ends of the first shaft (10) and the second shaft (11) are threaded with adjusting nuts (16). The first shaft (10) and the second shaft (11) are both provided with torque groups located between the adjusting nuts (16) and the positioning frame (12). The adjusting nuts (16) act on the torque groups so that the torque groups can be pressed on the positioning frame (12).

7. The portable folding keyboard according to claim 6, characterized in that: The torque assembly includes a friction plate (17) that contacts the adjusting nut (16) and a spacer (30) that contacts the positioning frame (12). The torque assembly also includes several torque plates (18) located between the friction plate (17) and the partition plate (30).

8. The portable folding keyboard according to claim 7, characterized in that: The positioning frame (12) has two positioning plates (23) spaced apart, and two connecting plates (24) spaced apart are connected between the positioning plates (23). The two ends of the positioning plate (23) are respectively sleeved on the first rotating shaft (10) and the second rotating shaft (11), and the two ends of the positioning plate (23) near the torque group are provided with stop grooves (31), and the partition (30) is connected with a stop section (32) that can slide with the stop groove (31). The transmission gear (13) is rotatably connected between the two connecting plates (24), and the driving gear (15) and the driven gear (14) are both located between the two positioning plates (23).

9. The portable folding keyboard according to claim 6, characterized in that: The first rotating shaft (10) and the second rotating shaft (11) each have a connecting section (19), a separating section (20), a sleeve section (21) and a threaded section (22) connected in sequence. The adjusting nut (16) is connected to the threaded section (22), and the positioning bracket (12) is connected to the sleeve section (21) and abuts against the partition section (20) under the combined action of the adjusting nut (16) and the torque assembly. The first pivot (10) has a connecting segment (19) connected to a first connecting piece (25) connected to the main keyboard body (1); the second pivot (11) has a connecting segment (19) connected to a second connecting piece (26) connected to the sub-keyboard body (2).

10. The portable folding keyboard according to claim 6, characterized in that: The first rotating shaft (10) and the second rotating shaft (11) are both fitted with a hinged outer shell (27) that surrounds the positioning frame (12), the torque group and the adjusting nut (16). The main keyboard body (1) has a receiving notch A (28) at both the left and right ends to receive one end of the hinge shell (27). The end of the sub-keyboard body (2) is provided with a receiving notch B (29) for receiving the other end of the hinged outer shell (27).

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