Keyboard structure with height-adjustable keys

Abstract

The utility model discloses a keyboard structure with adjustable key height, a keyboard is provided with an upper cover, a bottom shell, a circuit board, a middle plate, a plurality of groups of adjusting pieces, a plurality of guiding pieces and a limiting plate, the middle plate is buckled between the bottom shell and the upper cover, and the guiding pieces are embedded in the outline edge of the circuit board and abut against the inner wall of the middle plate. Under the action of external force, the adjusting piece pushes the guiding piece to drive the circuit board to move towards or away from the bottom shell, and the limiting plate is arranged in the bottom shell and is arranged under the circuit board. According to the utility model, the middle plate and the adjusting piece are arranged between the upper cover and the bottom shell, the guide piece is arranged between the middle plate and the circuit board, and the limiting plate is arranged on the bottom shell, so that the relative distance between the circuit board and the bottom shell can be conveniently adjusted by controlling the adjusting piece, namely, the relative distance between all key caps on the circuit board and the bottom shell is adjusted; therefore, the purpose of conveniently and synchronously adjusting the heights of all keys (keycaps) on the keyboard is achieved, the structure is simple, the adjusting piece adopts a common nut and screw matching structure, and the adjustment is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, in particular to a keyboard structure with adjustable key heights. Background Art

[0002] Keyboards are essential personal items for daily work, and preferences for keyboards and key height vary from person to person. Currently, most keyboards have adjustable overall tilt angles, but the key heights are generally fixed. While it's possible to adjust the relative position of your fingertips and keys by adjusting the overall height of the keyboard with the aid of a support stand, it's difficult to easily adjust them as needed. An inappropriate finger-key position can not only reduce work efficiency but can also cause finger strain during prolonged work. Summary of the Invention

[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a keyboard structure with adjustable key height. The keyboard is equipped with a middle plate, an adjustment member, a guide member and a limit plate, which can conveniently and synchronously adjust the height positions of all keys on the keyboard and has a simple structure.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows:

[0005] A keyboard structure with adjustable key height comprises an upper cover, a bottom cover, and a circuit board mounted therebetween. The circuit board is provided with a plurality of key assemblies, each of which comprises a keycap and a key shaft, and each of which is slidably mounted on the circuit board. The keyboard also comprises a middle plate, a plurality of adjustment members, a plurality of guide members, and a limit plate, wherein:

[0006] The middle plate is a frame-shaped structure and is matched and buckled between the bottom shell and the upper cover, and the circuit board is arranged on the inner side of the middle plate;

[0007] Each of the guide members is embedded in the outline edge of the circuit board, with its upper end resting on the upper inner wall of the middle plate, and its lower end extending to the bottom shell and being slidably connected thereto;

[0008] Each set of adjustment members includes an adjustment rod and a positioning ring. Each positioning ring can be embedded in the contour edge of the upper end of the bottom shell. Each adjustment rod can pass through the middle plate and be fixed to the bottom shell. Each adjustment rod can move axially along the positioning ring under the action of an external force to adjust the distance between the middle plate and the bottom shell, and simultaneously push each guide member to drive the circuit board toward or away from the bottom shell.

[0009] The limiting plate is arranged on the inner wall of the bottom shell and is arranged just below the circuit board.

[0010] As a further elaboration of the above technical solution:

[0011] In the above technical solution, each of the positioning rings is a lock nut, and its outer wall is axially provided with two end thread sections with opposite rotation directions and not connected, and the adjusting rod is a screw rod adapted to the lock nut; the bottom shell is provided with a plurality of positioning hole grooves 21 that can be adapted to the positioning rings one by one.

[0012] In the above technical solution, the middle plate is a shell structure, and its upper end is formed with a plurality of countersunk hole grooves that are adapted to the adjustment rods one by one, and its side wall is provided with one or more internal avoidance hole grooves for avoiding the connector on the circuit board.

[0013] In the above technical solution, each of the guide members is a flexible insulating member and has a "stem"-shaped structure, wherein the two horizontal plates are respectively arranged on the outer sides of the upper and lower end surfaces of the circuit board or the positioning member thereon, and the upper portion of the vertical plate is embedded in the contour edge of the circuit board or the positioning member thereon; the upper end portion of the bottom shell is provided with a plurality of guide hole grooves which are matched one by one with the lower end portion of the guide member.

[0014] In the above technical solution, the lower end portion of each guide member is symmetrically provided with a limiting convex bump.

[0015] In the above technical solution, a buffer pad is further provided between the middle plate and the upper cover, and a plurality of slots adapted to the buffer pad are provided on the upper end portion of the middle plate, and a plurality of guide protrusions and one or more external avoidance hole slots are provided on the side wall of the upper cover, each of the guide protrusions is adapted to a slot, and each of the external avoidance hole slots is adapted to an inner avoidance hole slot.

[0016] In the above technical solution, a wedge-shaped pad is further provided on the inner wall of the bottom shell, and the limiting plate is provided on the pad and matched and embedded in the inner wall of the bottom shell.

[0017] In the above technical solution, the limit plate is provided with one or more avoidance grooves below each key shaft, and the pad is provided with several limit protrusions, each of the limit protrusions extends into one of the avoidance grooves and its top end does not exceed the upper end surface of the limit plate.

[0018] Compared with the prior art, the beneficial effect of the present invention is that by arranging a middle plate and an adjusting member between the upper cover and the bottom shell, arranging a guide member between the middle plate and the circuit board, and arranging a limit plate on the bottom shell, the relative distance between the circuit board and the bottom shell can be conveniently adjusted by manipulating the adjusting member, that is, the relative distance between all the key caps on the circuit board and the bottom shell can be adjusted, thereby achieving the purpose of conveniently and synchronously adjusting the height of all the keys (key caps) on the keyboard. The structure is simple, and the adjusting member adopts a common nut and screw matching structure, which is very convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1Schematic diagram of the decomposition structure of this embodiment;

[0020] Figure 2 Schematic diagram of the middle plate structure of this embodiment;

[0021] Figure 3 Schematic diagram of the exploded structure of the adjusting member in this embodiment;

[0022] Figure 4 Schematic diagram of the structure of the guide member in this embodiment;

[0023] Figure 5 Schematic diagram of the structure of the upper cover in this embodiment;

[0024] Figure 6 2 is a schematic structural diagram of the bottom shell in this embodiment.

[0025] In the figure: 10, upper cover; 11, guide protrusion; 12, outer avoidance hole groove; 20, bottom shell; 21, positioning hole groove; 22, guide hole groove; 30, circuit board; 40, middle plate; 41, countersunk hole groove; 42, inner avoidance hole groove; 43, card slot; 50, adjustment member; 51, adjustment rod; 52, positioning ring; 60, guide member; 61, limiting convex bump; 70, limiting plate; 71, avoidance groove; 80, buffer pad; 90, pad. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The embodiments described with reference to the accompanying drawings are illustrative and intended to explain the present application, and should not be construed as limiting the present application. In the description of this application, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" and "a plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower level than the second feature.

[0028] like Figure 1As shown, a keyboard structure with adjustable key height is provided on the keyboard, and an upper cover 10, a bottom shell 20 and a circuit board 30 installed therebetween are provided, and a plurality of key assemblies are arranged on the circuit board 30, each key assembly includes a keycap and a key shaft, and each key shaft is slidably installed on the circuit board 30; it also includes a middle plate 40, a plurality of groups of adjustment members 50, a plurality of guide members 60 and a limit plate 70, and the limit plate 70 is provided on the inner wall of the bottom shell 20 and directly below the circuit board 30, and is provided with one or more air avoidance grooves 71 below each key shaft. In this embodiment, a buffer pad 80 is further provided between the middle plate 40 and the upper cover 10, and since the keyboard as a whole has an inclined structure, the circuit board 30 in the keyboard is placed at an angle. In order to ensure that the relative position relationship of all keys remains unchanged during the height adjustment process, a wedge-shaped pad 90 is further provided on the inner wall of the bottom shell 20 to support the limit plate 70. The inner wall structure of the bottom shell 20 matches the limit plate 70, and a number of limit protrusions 91 are provided on the pad 90. Each limit protrusion 91 extends into an air avoidance groove 71 and its top end does not exceed the upper end surface of the limit plate 70.

[0029] like Figure 2 As shown, the middle plate 40 is a frame-shaped structure that fits between the bottom case 20 and the upper cover 10. The circuit board 30 is located inside the middle plate 40. In this embodiment, the middle plate 40 is a shell structure. A plurality of countersunk slots 41 are formed on its upper end, which are adapted to the adjustment rods 51. One or more internal clearance slots 42 are provided on its sidewalls for accommodating the connectors on the circuit board 30. The upper end of the middle plate 40 is provided with a plurality of slots 43 that are adapted to the buffer pads 80.

[0030] like Figure 3 As shown, each set of adjustment members 50 includes an adjustment rod 51 and a positioning ring 52. Each positioning ring 52 can be embedded in the contour edge of the upper end of the bottom shell 20. Each adjustment rod 51 can pass through the middle plate 40 and secure it to the bottom shell. Under the action of an external force, each adjustment rod 51 can move axially along the positioning ring 52 to adjust the spacing between the middle plate 40 and the bottom shell 20, and simultaneously push each guide member 60 to move the circuit board 30 toward or away from the bottom shell 20. In this embodiment, each positioning ring 52 is a locknut, with its outer wall having two axially opposite, non-connected threaded sections. The adjustment rod 51 is a screw that adapts to the locknut. To simplify the assembly process, in this embodiment, the positioning ring 52 is directly molded into the bottom shell 20 using an integrated molding process.

[0031] like Figure 4As shown, each guide member 60 is embedded in the outline of the circuit board 30, with its upper end resting on the upper inner wall of the middle plate 40, and its lower end extending to the bottom case 20 and slidingly connected thereto. In this embodiment, each guide member 60 is a flexible insulating member with a "stem"-shaped structure. Its two horizontal plates are respectively located outside the upper and lower end surfaces of the circuit board 30 or its upper retaining member, and the upper portion of its vertical plate is embedded in the outline of the circuit board 30 or its upper retaining member. Each guide member 60 also has symmetrically positioned stopper bumps 61 at its lower end.

[0032] like Figure 5 As shown, a plurality of guide protrusions 11 and one or more outer avoidance slots 12 are provided on the side wall of the upper cover 10 . Each guide protrusion 11 is matched with a card slot 43 , and each outer avoidance slot 12 is matched with an inner avoidance slot 42 .

[0033] like Figure 6 As shown, a plurality of positioning holes 21 and guide holes 22 are provided at the upper end of the bottom shell 20 . Each positioning hole 21 is adapted to the lower end of a positioning ring 52 , and each guide hole 22 is adapted to a guide member 60 .

[0034] To adjust the position, remove the top cover 10 and rotate the adjustment rod 51 forward or backward to adjust the distance between the middle plate 40 and the bottom case 20. The middle plate 40 pushes the guide member 60 to slide downward or upward in sync. The guide slot 22 guides the guide member 60's movement. The upper end of the bottom case 20 limits the maximum downward travel of the guide member 60 (the stopper 61), thereby limiting the minimum height of the circuit board 30 and the buttons. The backing plate 90 and the stopper plate 70 cooperate to support and limit the circuit board 30, clearing the end of the button shaft above it. Once completed, snap the top cover 10 onto the outer periphery of the middle plate 40 and bottom case 20. The cushioning pad 80 prevents the top cover 10 from striking the middle plate 40 during assembly and absorbs or mitigates the pressure exerted by the middle plate 40 on the circuit board 30.

[0035] The present invention provides a middle plate 40 and an adjusting member 50 between the upper cover 10 and the bottom shell 20, provides a guide member 60 between the middle plate 40 and the circuit board 30, and provides a limit plate 70 on the bottom shell 20. The adjusting member 50 can be conveniently operated to adjust the relative distance between the circuit board 30 and the bottom shell 20, that is, to adjust the relative distance between the keycaps on the circuit board 30 and the bottom shell 20, thereby achieving the purpose of conveniently adjusting the height of all keys (keycaps) on the keyboard. The structure is simple, and the adjusting member 50 adopts a common nut and screw matching structure, which is very convenient to adjust.

[0036] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A keyboard structure with adjustable key height, comprising an upper cover, a bottom cover, and a circuit board mounted therebetween, wherein a plurality of key assemblies are arranged on the circuit board, each of the key assemblies comprising a keycap and a key shaft, and each of the key shafts being slidably mounted on the circuit board; characterized in that: It also includes a middle plate, several groups of adjustment parts, several guide parts and a limit plate, wherein: The middle plate is a frame-shaped structure and is matched and buckled between the bottom shell and the upper cover, and the circuit board is arranged on the inner side of the middle plate; Each of the guide members is embedded in the outline edge of the circuit board, with its upper end resting on the upper inner wall of the middle plate, and its lower end extending to the bottom shell and being slidably connected thereto; Each set of adjustment members includes an adjustment rod and a positioning ring. Each positioning ring can be embedded in the contour edge of the upper end of the bottom shell. Each adjustment rod can pass through the middle plate and be fixed to the bottom shell. Each adjustment rod can move axially along the positioning ring under the action of an external force to adjust the distance between the middle plate and the bottom shell, and simultaneously push each guide member to drive the circuit board toward or away from the bottom shell. The limiting plate is arranged on the inner wall of the bottom shell and is arranged just below the circuit board.

2. The keyboard structure with adjustable key height according to claim 1, characterized in that: Each of the positioning rings is a locking nut, and its outer wall is axially provided with threaded sections at both ends with opposite rotation directions and not connected, and the adjusting rod is a screw rod adapted to the locking nut.

3. The keyboard structure with adjustable key height according to claim 1, characterized in that: The middle plate is a shell structure, and a plurality of countersunk hole grooves that are matched with the adjustment rods are formed on its upper end, and one or more inner avoidance hole grooves for avoiding the connector on the circuit board are provided on its side wall.

4. The keyboard structure with adjustable key height according to claim 1, characterized in that: Each of the guide members is a flexible insulating member and has a "stem"-shaped structure. Its two horizontal plates are respectively arranged on the outer sides of the upper and lower end surfaces of the circuit board or its upper positioning member, and the upper part of its vertical plate is embedded in the contour edge of the circuit board or its upper positioning member; the upper end of the bottom shell is provided with a plurality of guide hole grooves that are adapted one by one with the lower end parts of the guide members.

5. The keyboard structure with adjustable key height according to claim 4, characterized in that: The lower end portion of each guide member is symmetrically provided with a limiting convex bump.

6. The keyboard structure with adjustable key height according to claim 3, characterized in that: A buffer pad is also provided between the middle plate and the upper cover, and a plurality of slots adapted to the buffer pad are provided at the upper end of the middle plate. A plurality of guide protrusions and one or more external avoidance hole slots are provided on the side wall of the upper cover, each of the guide protrusions is adapted to a slot, and each of the external avoidance hole slots is adapted to an inner avoidance hole slot.

7. The keyboard structure with adjustable key height according to any one of claims 1 to 6, characterized in that: A wedge-shaped pad is further provided on the inner wall of the bottom shell, and the limiting plate is arranged on the pad and matched and embedded on the inner wall of the bottom shell.

8. The keyboard structure with adjustable key height according to claim 7, characterized in that: The limit plate is provided with one or more avoidance grooves below each key shaft, and the pad is provided with a plurality of limit protrusions, each of the limit protrusions extends into one of the avoidance grooves and its top end does not exceed the upper end surface of the limit plate.

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