Keyboard

Abstract

The utility model provides a keyboard which is used for solving the problems that in the prior art, a keycap is very easy to fall off and cannot prevent dust. The keyboard comprises a fixing plate, an air cushion and scissor feet are arranged on the fixing plate, the scissor feet are connected with keycaps, a protective panel is arranged on the fixing plate, a through hole for the keycaps to penetrate through is formed in the protective panel, a gap is formed between the protective panel and the fixing plate, each keycap comprises a top plate, a vertical baffle is arranged in the circumferential direction of the top plate, and a horizontal baffle is arranged in the circumferential direction of the vertical baffle. The horizontal baffle can move in the gap and can abut against the protection panel. According to the keyboard, through stable keycap fixing and dustproof design, a user can enjoy smoother and more comfortable input experience when using the keyboard, and meanwhile, the possibility that the keyboard performance is affected due to the fact that the keycaps fall off or particulate matter enters the keyboard is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of computer external auxiliary equipment, in particular to a keyboard. Background Art

[0002] As the main input device for computers and other electronic devices, the keyboard's technological development has gone through several stages, from mechanical to capacitive, and from membrane to modern mechanical keyboards. Each keyboard technology has its own unique characteristics and applicable scenarios. The traditional keyboard structure usually includes keycaps, a supporting structure, and a connecting circuit board. The keycaps are connected to the circuit board through the supporting structure, and users input signals by pressing the keycaps. During the use of traditional membrane keyboards, dust and fine particles can easily accumulate inside the keyboard through the gaps between the keycaps. This may not only affect the typing feel, but also be more troublesome to clean. It is often necessary to remove the keycaps for cleaning. If this process lacks professional knowledge, it is easy to damage the keycaps and supporting structure. In addition, if the keyboard accidentally falls from a height, the keycaps are also very easy to fall off. If the user fails to install the keycaps correctly, the keyboard will not work properly. Utility Model Content

[0003] The utility model provides a keyboard, which solves the problems in the prior art that key caps are very easy to fall off and cannot be dustproof.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A keyboard includes a fixed plate, an air cushion and scissor feet are provided on the fixed plate, the scissor feet are connected to keycaps, a protective panel is provided on the fixed plate, a through hole is provided on the protective panel for the keycaps to pass through, a gap is provided between the protective panel and the fixed plate, the keycaps include a top plate, a vertical baffle is provided around the top plate, a horizontal baffle is provided around the vertical baffle, the horizontal baffle moves in the gap, and the horizontal baffle can be against the protective panel.

[0006] Furthermore, the scissor legs include an outer frame and an inner frame. Corresponding pivot holes are bored through both sides of the outer frame, while pivots corresponding to the pivot holes are provided at both ends of the inner frame. The pivot holes are connected to the top surface of the outer frame via inclined slideways. A limit baffle is provided on the sidewall of the pivot. When the pivot rotates within the pivot hole, the limit baffle swings within the inclined slideway. The rotation of the pivot within the pivot hole, combined with the swinging of the limit baffle within the inclined slideway, allows precise control of the relative rotation angle between the outer and inner frames, ensuring stability and smoothness during the key press and release process, and preventing the key from becoming stuck or becoming excessively loose.

[0007] Furthermore, the limit baffle is arc-shaped, and a curved corner is provided on one side of the inclined slideway near the top of the outer frame, which can be positioned within the limit baffle. The curved limit baffle can more evenly distribute the pressure acting on the baffle, which helps reduce local stress concentration, thereby reducing wear and extending the service life of the component.

[0008] Furthermore, the fixing plates on both sides of the scissor legs are provided with vertical plates, each of which is provided with a first limiting hole. The fixing plates are provided with a second limiting hole connected to the limiting hole. The first limiting hole and the second limiting hole cooperate to form a limiting slot. A metal crossbar intersects the bottom surface of the keycap, and metal longitudinal rods are fixed at both ends of the metal crossbar. The metal longitudinal rods are inserted into the limiting slot. The diameter of the vertical portion of the first limiting hole is smaller than the diameter of the metal longitudinal rod. The sidewalls of the metal longitudinal rods abut against the fixing plates at the ends of the limiting slot. The lever effect of the metal longitudinal rods makes the key rebound smoother and reduces the possibility of sticking.

[0009] Furthermore, the bottom of the keycap is mirrored with two L-shaped baffles. The L-shaped baffles cooperate with the bottom surface of the top plate to form a slide groove. Connecting pins are provided on both sides of the outer frame. The connecting pins move within the slide grooves. The side walls of the connecting pins are provided with limiting surfaces parallel to the top surface of the outer frame. The limiting surfaces can abut against the bottom ends of the L-shaped baffles. The limiting surfaces on the side walls of the connecting pins abut against the bottom ends of the L-shaped baffles, effectively limiting the rotation angle of the bracket, ensuring that the keys will not be misoperated or damaged due to excessive tilt during use, thereby improving the reliability and durability of the keyboard.

[0010] Furthermore, the horizontal baffle can abut against the protective panel, and washers are fixed to the top and bottom surfaces of the horizontal baffle. The washers can effectively reduce the collision sound between the keycaps and the fixing plate and the protective panel during movement, making the keyboard quieter when pressing and releasing keys, providing a quieter usage environment for users.

[0011] The beneficial effects that this technical solution can produce.

[0012] The utility model uses the horizontal baffle and the protective panel to offset each other. After the air cushion lifts the keycap, it can prevent smaller granular debris from entering the keyboard through the gap between the protective panel and the keycap, thereby ensuring the cleanliness of the interior of the keyboard and improving the service life and feel of the keyboard. By placing the horizontal baffle in the gap between the protective panel and the fixing plate, the keycap can be fixed more stably, reducing the problem of the keycap loosening or falling off when the keyboard is subjected to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0017] Figure 4 This is an exploded view of a single button of the utility model;

[0018] Figure 5 This is a cross-sectional view of the scissor legs of the utility model;

[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting pin and the L-shaped baffle of the utility model;

[0020] Figure 7 This is a schematic diagram of the three-dimensional structure of the keycap and the metal crossbar of the utility model;

[0021] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing plate and keycap of the utility model.

[0022] Among them: 1. Fixed plate, 2. Keycap, 3. Air cushion, 4. Protective panel, 5. Through hole, 6. Top plate, 7. Vertical baffle, 8. Horizontal baffle, 9. Outer frame, 10. Inner frame, 11. Hinge hole, 12. Hinge, 13. Inclined slide, 14. Limit baffle, 15. Arc angle, 16. Vertical plate, 17. First limiting hole, 18. Second limiting hole, 19. Limiting slot, 20. Metal cross bar, 21. Metal longitudinal bar, 22. L-shaped baffle, 23. Slide, 24. Connecting pin, 25. Limiting surface, 26. Washer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-4 As shown, an embodiment of the present invention provides a keyboard, including a fixed plate 1, an air cushion 3 and a scissor foot are provided on the fixed plate 1, the scissor foot is connected to the keycap 2, a protective panel 4 is provided on the fixed plate 1, a through hole 5 for the keycap 2 to pass through is provided on the protective panel 4, a gap is provided between the protective panel 4 and the fixed plate 1, the keycap 2 includes a top plate 6, a vertical baffle 7 is provided around the top plate 6, a horizontal baffle 8 is provided around the vertical baffle 7, the horizontal baffle 8 moves in the gap, and the horizontal baffle 8 can be against the protective panel 4. The horizontal baffle 8 cooperates with the vertical baffle 7 and the horizontal baffle 8 of the keycap 2 to block the through hole 5, thereby preventing particles and dust from entering the interior of the keyboard. The vertical baffle 7 can form an obtuse angle with the top plate 6.

[0025] During the assembly process, the keycap 2 and the scissor legs are installed one by one with the air cushion 3. After the keycap 2 is installed, the fixing plate 1 is fixedly connected to the protective panel 4 so that the horizontal baffle 8 of the keycap 2 is placed between the protective panel 4 and the fixing plate 1 and moves up and down, ensuring the stability of the keycap 2 after installation. This can effectively prevent the keycap 2 from falling off during use or when the keyboard is subjected to external force impact, thereby improving the durability of the keyboard and the user experience. The protective panel 4 not only protects the internal structure of the keyboard, but also effectively prevents impurities such as particulate matter from entering the keyboard through the gap between the through hole 5 and the keycap 2 due to the gap design between the fixing plate 1, which can keep the keyboard clean and extend its service life.

[0026] like Figure 3-5 As shown, the scissor legs include an outer frame 9 and an inner frame 10. The outer frame 9 is provided with corresponding shaft holes 11 on both sides. The inner frame 10 is provided with shafts 12 corresponding to the shaft holes 11 at both ends. The shaft holes 11 are connected to the top surface of the outer frame 9 through an inclined slide 13. The side wall of the shaft 12 is provided with a limit baffle 14. When the shaft 12 rotates in the shaft hole 11, the limit baffle 14 swings in the inclined slide 13. The width of the inclined slide 13 is slightly smaller than the width of the shaft hole 11, thereby achieving the clamping connection between the shaft 12 and the outer frame 9. During the installation and disassembly process, the inclined slide 13 needs to be deformed so that the width of the inclined slide 13 increases. By making the width of the inclined slide 13 slightly smaller than the width of the shaft hole 11, a certain resistance can be provided to the shaft 12 to prevent the shaft 12 from separating from the shaft hole 11.

[0027] During assembly, the shaft 12 enters the shaft hole 11 along the inclined slide 13, placing the limit baffle 14 in the shaft hole 11. The swing of the limit baffle 14 in the inclined slide 13 allows the outer frame 9 and the inner frame 10 to rotate relative to each other. The limit baffle 14 abuts against the side wall of the inclined slide 13, and the swing of the limit baffle 14 in the inclined slide 13 can accurately control the relative rotation angle between the outer frame 9 and the inner frame 10, ensuring the stability and smoothness of the key during the pressing and releasing process, avoiding the problem of key jamming or excessive looseness, and thus improving the user experience. After the keycap 2 is pressed, due to the contact between the limit baffle 14 and the side wall of the inclined slide 13, the movement of the shaft 12 during the reset process is smoother, and the key travel is limited. By limiting the key travel, the collision of the keycap 2 with the protective panel 4 and the fixing plate 1 can be reduced, reducing unnecessary vibration and noise, and providing a quieter use environment for the user. The design of the rotating shaft 12 entering the rotating shaft hole 11 along the inclined slide 13 makes the assembly process simpler and faster, which not only improves production efficiency but also reduces production costs, and is convenient for subsequent maintenance and replacement.

[0028] like Figure 5 As shown, the limit baffle 14 is arc-shaped, and an arc angle 15 is provided on one side of the inclined slide 13 near the top of the outer frame 9, and the arc angle 15 can be placed inside the limit baffle 14. By providing the arc-shaped limit baffle 14, when the limit baffle 14 contacts the arc angle 15 during rotation, the arc-shaped limit baffle 14 can more evenly disperse the pressure from the key, which not only reduces the wear caused by stress concentration, but also extends the service life of the scissor foot mechanism. The arc-shaped limit baffle 14 matches the arc angle 15 in the inclined slide 13, so that the limit baffle 14 can fit more closely on the arc angle 15 during rotation, thereby enhancing the limiting effect and ensuring the stability of the keycap 2 after restoration. The use of the arc baffle and the arc angle 15 in combination can provide a tighter and more precise limiting effect, ensuring that the rotation angle of the shaft 12 is within the design range and avoiding the problem of jamming caused by excessive rotation.

[0029] like Figure 4 、 7As shown in Figures 8 and 9, the fixing plate 1 on both sides of the scissor legs is provided with vertical plates 16, and the vertical plates 16 are provided with first limiting holes 17. The fixing plate 1 is provided with second limiting holes 18 connected to the limiting holes. The first limiting holes 17 and the second limiting holes 18 cooperate to form a limiting groove 19. The bottom surface of the keycap 2 is connected to a metal crossbar 20, and metal longitudinal rods 21 are fixed at both ends of the metal crossbar 20. The metal longitudinal rod 21 is inserted into the limiting groove 19. The diameter of the first limiting hole 17 is smaller than the diameter of the metal longitudinal rod 21, and the side wall of the metal longitudinal rod 21 abuts against the fixing plate 1 at the end of the limiting groove 19. The keycap 2 is connected to the metal crossbar 20 by a snap-fit ​​structure. The snap-fit ​​structure can be a U-shaped card or other existing structure, as long as it can ensure the rotation of the metal crossbar 20.

[0030] Some commonly used keys on a keyboard are larger in area. If the air cushion 3 were to rely solely on its own rebound, the keycap 2 would easily become stuck, thus affecting the key feel. The sidewall of the metal longitudinal rod 21 abuts against the fixing plate 1 at the end of the second limiting hole 18 away from the first limiting hole 17, forming a lever. The fixing plate 1 at the end of the second limiting hole 18 away from the first limiting hole 17 forms a fulcrum. The first limiting hole 17 can limit the metal longitudinal rod 21. When the keycap 2 is pressed, the metal longitudinal rod 21 deforms. When the keycap 2 returns to its original position, the metal longitudinal rod 21, due to its inherent resilience, applies a thrust to the keycap 2, allowing it to quickly return to its original position. During the deformation and recovery process, the metal longitudinal rod 21 utilizes the inherent elasticity of the metal material to provide a strong restoring force to the keycap 2. This helps the keycap 2 rebound quickly, thereby improving the key response speed and feel, and reducing the burden on the air cushion 3, thereby extending the service life of the keyboard. By arranging the metal longitudinal rod 21 and the limiting groove 19, a stable supporting structure is provided for the key, which reduces the shaking of the large-area key during use and ensures the stability of the key operation.

[0031] like Figure 6 、 7 As shown, the bottom end of the keycap 2 is mirrored with two L-shaped baffles 22. The L-shaped baffles 22 cooperate with the bottom surface of the top plate 6 to form a slide groove 23. Connecting pins 24 are provided on both sides of the outer frame 9. The connecting pins 24 move within the slide groove 23. The side walls of the connecting pins 24 are provided with limiting surfaces 25 parallel to the top surface of the outer frame 9. The limiting surfaces 25 can abut against the bottom ends of the L-shaped baffles 22. The abutment between the limiting surfaces 25 and the L-shaped baffles 22 increases the contact area between the connecting pins 24 and the L-shaped baffles 22, improves the stability of the bracket, and limits the rotation angle of the bracket, ensuring that the key always remains within an appropriate range during the pressing and releasing process, improving the response speed and accuracy of the key, and avoiding damage or malfunction caused by excessive rotation.

[0032] like Figure 4 、7 As shown, washers 26 are fixed to the top and bottom surfaces of the horizontal baffle 8. The washers 26 can be made of rubber or other existing cushioning and shock-absorbing materials. By adding washers 26 at both ends of the horizontal baffle 8, the noise generated when the keycap 2 collides with the fixing plate 1 and the protective panel 4 can be significantly reduced, making the keyboard quieter during use. It can also increase the cushioning effect of the keys, thereby providing a softer and more comfortable typing feel, and it is less likely to cause fatigue even after long periods of typing. The washers 26 can absorb part of the impact force, reduce the direct friction and impact between the keycap 2 and the fixing plate 1 and the protective panel 4, and thus extend the service life of these components.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A keyboard, comprising a fixing plate (1), an air cushion (3) and a scissor foot provided on the fixing plate (1), the scissor foot being connected to a keycap (2), a protective panel (4) provided on the fixing plate (1), a through hole (5) provided on the protective panel (4) for the keycap (2) to pass through, characterized in that: A gap is provided between the protective panel (4) and the fixed plate (1), the key cap (2) includes a top plate (6), a vertical baffle (7) is provided on the circumference of the top plate (6), a horizontal baffle (8) is provided on the circumference of the vertical baffle (7), the horizontal baffle (8) moves in the gap, and the horizontal baffle (8) can abut against the protective panel (4); the scissor foot includes an outer frame (9) and an inner frame (10), both sides of the outer frame (9) are provided with corresponding rotating shaft holes (11), both ends of the inner frame (10) are provided with rotating shafts (12) corresponding to the rotating shaft holes (11), the rotating shaft holes (11) are connected to the top surface of the outer frame (9) through an inclined slide (13), and the side wall of the rotating shaft (12) is provided with a limiting baffle (14). When the rotating shaft (12) is in When the shaft hole (11) rotates, the limit baffle (14) swings in the inclined slide (13); the limit baffle (14) is arc-shaped, and the side of the inclined slide (13) close to the top of the outer frame (9) is provided with an arc angle (15), and the arc angle (15) can be placed in the limit baffle (14); the bottom end of the keycap (2) is mirrored with two L-shaped baffles (22), and the L-shaped baffles (22) cooperate with the bottom surface of the top plate (6) to form a slide groove (23), and connecting pins (24) are provided on both sides of the outer frame (9), and the connecting pins (24) move in the slide groove (23), and the side wall of the connecting pin (24) is provided with a limit surface (25) parallel to the top surface of the outer frame (9), and the limit surface (25) can be against the L-shaped baffle (22).

2. A keyboard according to claim 1, characterized in that: A vertical plate (16) is provided on the fixing plate (1) on both sides of the scissor foot, a first limiting hole (17) is passed through the vertical plate (16), a second limiting hole (18) connected to the limiting hole is provided on the fixing plate (1), the first limiting hole (17) and the second limiting hole (18) cooperate to form a limiting groove (19), a metal cross bar (20) is connected to the bottom surface of the key cap (2), metal longitudinal bars (21) are fixed at both ends of the metal cross bar (20), the metal longitudinal bars (21) are passed through the limiting groove (19), the vertical diameter of the first limiting hole (17) is smaller than the diameter of the metal longitudinal bar (21), and the side wall of the metal longitudinal bar (21) abuts against the fixing plate (1) at the end of the limiting groove (19).

3. The keyboard according to claim 1, wherein: The keyboard according to claim 1, characterized in that washers (26) are fixed to the top and bottom surfaces of the horizontal baffle (8).

Images