Ergonomic curve keyboard

Abstract

The utility model discloses an ergonomic curve keyboard, which relates to the technical field of computer input equipment, and comprises a shell, the upper surface of the shell is rotatably connected with two key groups which are symmetrical left and right, and the positions of four corners of the space of the lower surface of the shell are fixedly connected with four supporting legs which are distributed in a rectangular shape. A supporting mechanism is rotationally connected to the position, close to the bottom, of the rear side of the shell, a rotating mechanism is rotationally connected to the inner side of the shell, and two taking and placing grooves distributed in a bilateral symmetry mode are formed in the positions, close to the rear side, of the left side and the right side of the lower surface of the shell. Then a first bevel gear is rotated, so that an extension rod is moved out of the inner side of a supporting sleeve rod to be further lifted, the moving distance of the extension rod is controlled according to the needs of a user, the use requirements of different crowds are met, and the crowd applicability of the keyboard is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of computer input equipment, in particular to an ergonomic curve keyboard. Background Art

[0002] At present, with the acceleration of the information process of society, computers have gradually become basic equipment that people cannot do without in their work, life, study and even leisure. In recent years, artificial intelligence has developed rapidly, and smart devices have begun to enter various scenarios such as industrial production, commercial services, social management, study and leisure. Computers and smart terminals are inseparable from information input devices such as keyboards. Keyboards have become an important device for people's work, life, study and even leisure.

[0003] For example, the Chinese patent with publication number CN215833871U discloses an ergonomic keyboard, including a keyboard body, the keyboard body including a keyboard shell, a keyboard main body part is arranged in the keyboard shell, the keyboard shell is low in front and high in the back, and is tilted, and the keyboard shell extends backward to form a support area, and the support area is used to support the palm, wrist, and forearm. Compared with the prior art, the technical effect of the utility model is that the utility model is provided with an inclined keyboard, and the ergonomic keyboard designed based on the principle of human engineering can ensure that the wrist of the information inputter is always in a natural stretch state, effectively avoiding the wrist of the information inputter who inputs information with the old-style keyboard from being in an unnatural and laborious upward bending state and a long-term suspended state for a long time, significantly improving the comfort of the wrist of the information inputter, significantly reducing the probability of chronic wrist injury caused by long-term unnatural and laborious upward bending and the labor intensity of the upper limbs, and improving the efficiency of information input.

[0004] The existing technology has the following problems:

[0005] The ergonomic keyboard is raised at the rear to change the user's hand position, but the height of the rear of the keyboard remains unchanged. Different users need to have different tilt angles of the keyboard, otherwise it is difficult to meet the usage needs of different groups of people. Utility Model Content

[0006] The utility model provides an ergonomic curved keyboard to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] An ergonomic curved keyboard comprises a shell, wherein the upper surface of the shell is rotatably connected to two left-right symmetrical key groups, four rectangularly distributed supporting feet are fixedly connected to the four corners of the lower surface space of the shell, a supporting mechanism is rotatably connected to the rear side of the shell near the bottom, a rotating mechanism is rotatably connected to the inner side of the shell, and two left-right symmetrically distributed pick-up and release grooves are provided on the left and right sides of the lower surface of the shell near the rear side.

[0009] Preferably, the supporting mechanism includes a rotating rod, the outer wall of which is rotatably connected to the inner side of the shell near the rear lower side, the left and right ends of the rotating rod are fixedly connected with supporting sleeve rods, the upper surfaces of the rear wall inner cavities of the two supporting sleeve rods are rotatably connected with the first bevel gear, the front surfaces of the rear wall inner cavities of the two supporting sleeve rods are rotatably connected with the second bevel gear, the upper sides of the second bevel gears are meshed and connected with the front sides of the first bevel gears, the inner sides of the two supporting sleeve rods are movably sleeved with extension rods, the front ends of the two second bevel gears are fixedly connected with screws, and the outer walls of the screws are threadedly connected to the inner sides of the extension rods.

[0010] Preferably, the inner wall of the rotating rod is rotatably connected to a transmission rod, and the left and right ends of the transmission rod are fixedly connected to third bevel gears, and the lower side of the third bevel gear is meshed and connected with the left side of the first bevel gear.

[0011] Preferably, the rotating mechanism includes a rotating sleeve, the outer wall of which is rotatably connected to a middle rear position on the inner side of the upper wall of the shell, the lower side of the rotating sleeve is rotatably connected to a fourth bevel gear, and two left-right symmetrical worm gears are rotatably connected to a position near the rear side on the lower surface of the inner cavity of the shell, and the ends of the two worm gears close to each other are fixedly connected to a fifth bevel gear, and the lower side of the fifth bevel gear is meshed and connected with the left and right sides of the fourth bevel gear.

[0012] Preferably, two symmetrical worm wheels are rotatably connected to the lower surface of the inner cavity of the shell, the rear side of the worm wheel is meshed and connected with the outer wall of the worm, and the upper side of the worm wheel is fixedly connected to the axis of the lower surface of the button group.

[0013] Preferably, the inner wall of the rotating sleeve is movably connected with a protective component, and the protective component includes a movable sleeve, the outer wall of the movable sleeve is movably connected to the inner side of the rotating sleeve, a sliding rod is fixedly connected to the axis of the inner lower surface of the rotating sleeve, the upper end of the sliding rod is fixedly connected to a first cone, and the lower surface of the first cone is overlapped with four annularly distributed limiting blocks, and two limiting rods are movably connected to both sides of the four limiting blocks, and one end of the limiting rod away from the sliding rod is fixedly connected to the inner wall of the movable sleeve, and the outer walls of the eight limiting rods are movably connected with a first spring, and the first spring is located on the side of the limiting block away from the sliding rod, and the outer wall of the sliding rod is slidably connected to the second cone.

[0014] Preferably, four annularly distributed telescopic rods are fixedly connected between the inner upper surface of the movable sleeve and the inner lower surface of the rotating sleeve, a circular plate is fixedly connected to the middle of the outer walls of the four telescopic rods, and a second spring is movably sleeved on the outer walls of the four telescopic rods.

[0015] Preferably, the outer wall of the movable sleeve is provided with a plurality of annularly distributed sliding grooves, the inner side of the rotating sleeve is provided with a plurality of annularly distributed limiting strips, and the limiting strips are slidably connected to the inner sides of the sliding grooves.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an ergonomic curved keyboard, which adopts the cooperation of a shell, a supporting mechanism, a rotating rod, a supporting sleeve rod, a first bevel gear, an extension rod, a screw rod, a second bevel gear, a transmission rod and a third bevel gear. By rotating the supporting sleeve rod, the rear side of the shell is raised for the first time, and then the first bevel gear is rotated to cause the extension rod to move out from the inner side of the supporting sleeve rod for further raising. According to the needs of the user himself, the moving distance of the extension rod is controlled to meet the use needs of different groups of people, thereby improving the applicability of the keyboard.

[0018] 2. The utility model provides an ergonomic curved keyboard, which adopts a key group, a rotating mechanism, a rotating sleeve, a fourth bevel gear, a worm, a fifth bevel gear, a worm wheel, a protective component, a movable sleeve, a telescopic rod, a sliding rod, a first truncated cone, a limiting block, a limiting rod, a first spring, a second truncated cone and a second spring. The movable sleeve is pressed to make the movable sleeve pop out, and the movable sleeve is rotated to cause the two key groups to rotate, so that the upper keys of the key groups face the user's elbow, so that the user's hand and forearm maintain a straight line, avoiding the situation in which the traditional keyboard tilts inward when the arm causes the hand to twist, reducing the pressure on the wrist, and making the user more comfortable when using. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the support mechanism of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the rotating mechanism of the utility model;

[0023] Figure 5It is a partial cross-sectional three-dimensional structural schematic diagram of the rotating sleeve part of the utility model.

[0024] In the figure: 1. shell; 2. button group; 3. support foot; 4. support mechanism; 41. rotating rod; 42. supporting sleeve rod; 43. first bevel gear; 44. extension rod; 45. screw rod; 46. second bevel gear; 47. transmission rod; 48. third bevel gear; 5. rotating mechanism; 51. rotating sleeve; 52. fourth bevel gear; 53. worm; 54. fifth bevel gear; 55. worm gear; 56. protective assembly; 561. movable sleeve; 562. telescopic rod; 563. sliding rod; 564. first truncated table; 565. limiting block; 566. limiting rod; 567. first spring; 568. second truncated table; 569. second spring; 6. pick-up and release groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1 , Figure 2 As shown, the ergonomic curved keyboard includes a shell 1, the upper surface of the shell 1 is rotatably connected to two left-right symmetrical key groups 2, the four corners of the lower surface space of the shell 1 are fixedly connected to four rectangularly distributed supporting feet 3, the rear side of the shell 1 near the bottom is rotatably connected to a supporting mechanism 4, the inner side of the shell 1 is rotatably connected to a rotating mechanism 5, and two left-right symmetrically distributed pick-up and placement grooves 6 are provided on the left and right sides of the lower surface of the shell 1 near the rear side.

[0027] It should be noted that the two key groups 2 each contain half of the keys of a standard keyboard, and the two key groups 2 separate these two parts of keys from each other, so that the extent to which the user's hands move inward is reduced.

[0028] like Figure 2 , Figure 3 As shown, the supporting mechanism 4 includes a rotating rod 41, the outer wall of which is rotatably connected to the inner side of the shell 1 near the rear lower side, the left and right ends of the rotating rod 41 are fixedly connected with supporting sleeve rods 42, the upper surfaces of the rear wall inner cavities of the two supporting sleeve rods 42 are rotatably connected with first bevel gears 43, the front surfaces of the rear wall inner cavities of the two supporting sleeve rods 42 are rotatably connected with second bevel gears 46, the upper sides of the second bevel gears 46 are meshed and connected together with the front sides of the first bevel gears 43, the inner sides of the two supporting sleeve rods 42 are movably sleeved with extension rods 44, the front ends of the two second bevel gears 46 are fixedly connected with screw rods 45, and the outer walls of the screw rods 45 are threadedly connected to the inner sides of the extension rods 44.

[0029] It should be noted that the pick-up and release groove 6 is located near the middle of the support sleeve 42, which is used to facilitate pulling out the support sleeve 42. When the support sleeve 42 rotates so that the front end of the support sleeve 42 is backward, the upper side of the first bevel gear 43 faces downward. The upper side of the first bevel gear 43 is provided with a rotation groove, which is used to rotate the first bevel gear 43 by an external tool. When the first bevel gear 43 rotates, it drives the second bevel gear 46 to rotate. When the second bevel gear 46 rotates, it drives the screw rod 45 to rotate. When the screw rod 45 rotates, the extension rod 44 moves along the screw rod 45 to control the total length of the support sleeve 42 and the extension rod 44.

[0030] like Figure 3 As shown, the inner wall of the rotating rod 41 is rotatably connected with a transmission rod 47 , and the left and right ends of the transmission rod 47 are fixedly connected with third bevel gears 48 , and the lower side of the third bevel gear 48 is meshed and connected with the left side of the first bevel gear 43 .

[0031] It should be noted that when the first bevel gear 43 on one side rotates, the third bevel gear 48 on that side is driven to rotate, and by relying on the transmission rod 47, the third bevel gears 48 on both sides rotate synchronously, so that the user only needs to adjust the first bevel gear 43 on one side to complete the adjustment of the two extension rods 44.

[0032] like Figure 2 , Figure 4 As shown, the rotating mechanism 5 includes a rotating sleeve 51, the outer wall of the rotating sleeve 51 is rotatably connected to the middle rear position of the inner side of the upper wall of the shell 1, the lower side of the rotating sleeve 51 is rotatably connected to the fourth bevel gear 52, and the lower surface of the inner cavity of the shell 1 near the rear side is rotatably connected to two left and right symmetrical worm gears 53, and the ends of the two worm gears 53 close to each other are fixedly connected to the fifth bevel gear 54, and the lower side of the fifth bevel gear 54 is meshed and connected with the left and right sides of the fourth bevel gear 52.

[0033] It should be noted that when the fourth bevel gear 52 is rotated, the fifth bevel gear 54 is driven to rotate. The two fifth bevel gears 54 are symmetrically distributed on the left and right sides of the fourth bevel gear 52, causing the two fifth bevel gears 54 to rotate synchronously in opposite directions, thereby causing the two worm gears 53 to rotate synchronously in opposite directions.

[0034] like Figure 4 As shown, two symmetrical worm wheels 55 are rotatably connected to the lower surface of the inner cavity of the shell 1, the rear side of the worm wheel 55 is meshed and connected with the outer wall of the worm 53, and the upper side of the worm wheel 55 is fixedly connected to the axis of the lower surface of the button group 2.

[0035] It should be noted that when the worm 53 rotates, it drives the worm wheel 55 to rotate, and when the worm wheel 55 rotates, it drives the button group 2 to rotate. Due to the self-locking effect between the worm wheel 55 and the worm 53, the button group 2 cannot drive the worm 53 to rotate in the opposite direction. Since the two worms 53 rotate in opposite directions synchronously, the two button groups 2 also rotate in opposite directions synchronously.

[0036] like Figure 5 As shown, the inner wall of the rotating sleeve 51 is movably sleeved with a protective component 56, and the protective component 56 includes a movable sleeve 561. The outer wall of the movable sleeve 561 is movably sleeved on the inner side of the rotating sleeve 51. A sliding rod 563 is fixedly connected to the axis of the inner lower surface of the rotating sleeve 51. The upper end of the sliding rod 563 is fixedly connected to a first truncated cone 564. The lower surface of the first truncated cone 564 is overlapped with four annularly distributed limiting blocks 565. Two limiting rods 566 are movably sleeved on both sides of the four limiting blocks 565. One end of the limiting rod 566 away from the sliding rod 563 is fixedly connected to the inner wall of the movable sleeve 561. The outer walls of the eight limiting rods 566 are movably sleeved with a first spring 567, and the first spring 567 is located on the side of the limiting block 565 away from the sliding rod 563. The outer wall of the sliding rod 563 is slidably connected to a second truncated cone 568.

[0037] It should be noted that the shape and size of the second truncated cone 568 are consistent with those of the first truncated cone 564. The first truncated cone 564 and the second truncated cone 568 are arranged symmetrically up and down. The shape of the limiting block 565 is a right-angled trapezoid, and the inclined surface is downward. Pressing the movable sleeve 561 causes the movable sleeve 561 to move downward, and then the inclined surface of the limiting block 565 and the upper outer edge of the second truncated cone 568 are squeezed against each other, causing the limiting block 565 to move to the side away from the sliding rod 563. When the movable sleeve 561 moves to the lowermost side, the movable sleeve 561 is located on the lower side of the second truncated cone 568. At this time, the first spring 567 pushes the limiting block 565 to reset, causing the limiting block 565 to push the second truncated cone 568 to move upward so that the second truncated cone 568 is completely on the upper side of the limiting block 565.

[0038] like Figure 5 As shown, four annularly distributed telescopic rods 562 are fixedly connected between the inner upper surface of the movable sleeve 561 and the inner lower surface of the rotating sleeve 51, a circular plate is fixedly connected to the middle of the outer wall of the four telescopic rods 562, and a second spring 569 is movably sleeved on the outer wall of the four telescopic rods 562.

[0039] It should be noted that the telescopic rod 562 is composed of a hollow rod and a solid rod, and the circular plate is fixed on the hollow rod. When the force on the movable sleeve 561 is released, the second spring 569 pushes the circular plate to drive the hollow rod to rise, so that the overall length of the telescopic rod 562 increases. At this time, the limiting block 565 drives the second round table 568 to move upward. When the second round table 568 fits the first round table 564, the second round table 568 is restricted, and the length of the telescopic rod 562 continues to increase, so that the outer wall of the second round table 568 pushes the limiting block 565 away from the sliding rod 563, and finally the limiting block 565 is pushed away from the sliding rod 563. The limiting block 565 is located on the upper side of the first truncated cone 564, and the movable sleeve 561 pops out from the inner side of the rotating sleeve 51. When storing, the movable sleeve 561 is pressed again. At this time, the outer wall of the first truncated cone 564 pushes the inclined surface of the limiting block 565, causing the limiting block 565 to move to the side away from the sliding rod 563. When the limiting block 565 is located on the lower side of the first truncated cone 564, the first spring 567 pushes the limiting block 565 to return to its original position, causing the lower surface of the first truncated cone 564 to support the upper surface of the limiting block 565, so that the movable sleeve 561 is stored in the inner side of the rotating sleeve 51.

[0040] like Figure 5 As shown, the outer wall of the movable sleeve 561 is provided with a plurality of annularly distributed sliding grooves, and the inner side of the rotating sleeve 51 is provided with a plurality of annularly distributed limiting strips, and the limiting strips are slidably connected to the inner side of the sliding grooves.

[0041] It should be noted that the slide groove is used to limit the movable sleeve 561 , so that when the movable sleeve 561 is rotated, the rotating sleeve 51 rotates along with the rotating sleeve 51 , thereby making the movable sleeve 561 drive the fourth bevel gear 52 to rotate.

[0042] The working principle of the utility model is as follows: first, the taking and placing groove 6 is located near the middle of the support sleeve rod 42, which is used to facilitate pulling out the support sleeve rod 42. When the support sleeve rod 42 rotates to cause the front end of the support sleeve rod 42 to move backward, the upper side of the first bevel gear 43 faces downward, and a rotation groove is provided on the upper side of the first bevel gear 43, which is used to rotate the first bevel gear 43 through an external tool. When the first bevel gear 43 rotates, it drives the second bevel gear 46 to rotate. When the second bevel gear 46 rotates, it drives the screw rod 45 to rotate. When the screw rod 45 rotates, the extension rod 44 moves along the screw rod 45 to control the total length of the support sleeve rod 42 and the extension rod 44. When the first bevel gear 43 on one side rotates, it drives the third bevel gear 48 on that side to rotate, and relies on the transmission rod 47 to cause the two sides to rotate. The third bevel gear 48 rotates synchronously, so that the user only needs to adjust the first bevel gear 43 on one side to complete the adjustment of the two extension rods 44, and by rotating the support sleeve rod 42, the rear side of the shell 1 is raised for the first time, and then the first bevel gear 43 is rotated to cause the extension rod 44 to move out from the inner side of the support sleeve rod 42 to further rise. According to the needs of the user, the moving distance of the extension rod 44 is controlled to meet the usage needs of different groups of people, thereby improving the applicability of the keyboard. Finally, the fourth bevel gear 52 is rotated, and when the fourth bevel gear 52 rotates, the fifth bevel gear 54 is driven to rotate. The two fifth bevel gears 54 are symmetrically distributed on the left and right sides of the fourth bevel gear 52, so that the two fifth bevel gears 54 rotate synchronously in opposite directions, thereby making the two The two worms 53 rotate synchronously in opposite directions. When the worm 53 rotates, the worm wheel 55 is driven to rotate. When the worm wheel 55 rotates, the button group 2 is driven to rotate. Due to the self-locking effect between the worm wheel 55 and the worm 53, the button group 2 cannot drive the worm 53 to rotate in the opposite direction. Since the two worms 53 rotate synchronously in opposite directions, the two button groups 2 rotate synchronously in opposite directions. The shape and size of the second truncated platform 568 are consistent with the first truncated platform 564. The first truncated platform 564 and the second truncated platform 568 are arranged symmetrically up and down. The shape of the limiting block 565 is a right-angled trapezoid, and the inclined surface is downward. Pressing the movable sleeve 561 causes the movable sleeve 561 to move downward, thereby causing the inclined surface of the limiting block 565 and the upper outer edge of the second truncated platform 568 to squeeze each other, causing the limiting block 565 to move away from the sliding rod. 563 moves to one side, when the movable sleeve 561 moves to the lowermost side, the movable sleeve 561 is located at the lower side of the second truncated cone 568, at this time, the first spring 567 pushes the limiting block 565 to reset, so that the limiting block 565 pushes the second truncated cone 568 to move up so that the second truncated cone 568 is completely on the upper side of the limiting block 565, the telescopic rod 562 is composed of a hollow rod and a solid rod, and the circular plate is fixed on the hollow rod, and the force on the movable sleeve 561 is released, and the second spring 569 pushes the circular plate to drive the hollow rod to rise, so that the overall length of the telescopic rod 562 increases, and at this time the limiting block 565 drives the second truncated cone 568 to move up, and when the second truncated cone 568 is attached to the first truncated cone 564, the second truncated cone 568 is restricted, and the length of the telescopic rod 562 continues to increase.The outer wall of the second truncated cone 568 pushes the limiting block 565 away from the sliding rod 563, and finally the limiting block 565 is located on the upper side of the first truncated cone 564, and the movable sleeve 561 pops out from the inner side of the rotating sleeve 51. When the movable sleeve 561 is stored, the outer wall of the first truncated cone 564 pushes the inclined surface of the limiting block 565, causing the limiting block 565 to move to the side away from the sliding rod 563. When the limiting block 565 is located on the lower side of the first truncated cone 564, the first spring 567 pushes the limiting block 565 to return to its original position, causing the first truncated cone 564 to return to its original position. The lower surface of a round table 564 presses against the upper surface of the limiting block 565, so that the movable sleeve 561 is stored inside the rotating sleeve 51. By pressing the movable sleeve 561, the movable sleeve 561 pops out, and the movable sleeve 561 is rotated, so that the two key groups 2 rotate, so that the keys on the upper side of the key group 2 face the user's elbow, so that the user's hand and forearm maintain a straight line, avoiding the situation where the traditional keyboard tilts inward when the arm causes the hand to twist, reducing the pressure on the wrist, and making the user more comfortable when using.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An ergonomic curved keyboard, comprising a housing (1), characterized in that: The upper surface of the shell (1) is rotatably connected to two left-right symmetrical button groups (2); four rectangularly distributed supporting feet (3) are fixedly connected to the four corners of the lower surface space of the shell (1); a supporting mechanism (4) is rotatably connected to the rear side of the shell (1) near the bottom; a rotating mechanism (5) is rotatably connected to the inner side of the shell (1); and two left-right symmetrically distributed pick-up and drop-out grooves (6) are provided on the left and right sides of the lower surface of the shell (1) near the rear side.

2. The ergonomic curved keyboard according to claim 1, characterized in that: The support mechanism (4) comprises a rotating rod (41), the outer wall of the rotating rod (41) is rotatably connected to a position near the rear lower side of the inner side of the shell (1), the left and right ends of the rotating rod (41) are fixedly connected to support sleeve rods (42), the upper surfaces of the rear wall inner cavities of the two support sleeve rods (42) are rotatably connected to the first bevel gear (43), the front surfaces of the rear wall inner cavities of the two support sleeve rods (42) are rotatably connected to the second bevel gear (46), the upper side of the second bevel gear (46) is meshed and connected with the front side of the first bevel gear (43), the inner sides of the two support sleeve rods (42) are movably sleeved with extension rods (44), the front ends of the two second bevel gears (46) are fixedly connected to screw rods (45), and the outer wall of the screw rod (45) is threadedly connected to the inner side of the extension rod (44).

3. The ergonomic curved keyboard according to claim 2, characterized in that: The inner wall of the rotating rod (41) is rotatably connected to a transmission rod (47), and the left and right ends of the transmission rod (47) are fixedly connected to a third bevel gear (48), and the lower side of the third bevel gear (48) is meshed and connected with the left side of the first bevel gear (43).

4. The ergonomic curved keyboard according to claim 1, characterized in that: The rotating mechanism (5) comprises a rotating sleeve (51), the outer wall of which is rotatably connected to a rearward middle position of the inner side of the upper wall of the housing (1), the lower side of which is rotatably connected to a fourth bevel gear (52), and the lower surface of the inner cavity of the housing (1) is rotatably connected to two symmetrical worm gears (53) at a position close to the rear side, the two ends of the worm gears (53) close to each other are fixedly connected to a fifth bevel gear (54), and the lower side of the fifth bevel gear (54) is meshed and connected with the left and right sides of the fourth bevel gear (52).

5. The ergonomic curved keyboard according to claim 4, characterized in that: Two symmetrical worm wheels (55) are rotatably connected to the lower surface of the inner cavity of the housing (1); the rear side of the worm wheel (55) is meshed and connected with the outer wall of the worm (53); and the upper side of the worm wheel (55) is fixedly connected to the axis of the lower surface of the button group (2).

6. The ergonomic curved keyboard according to claim 4, characterized in that: The inner wall of the rotating sleeve (51) is movably sleeved with a protective component (56), and the protective component (56) comprises a movable sleeve (561), the outer wall of the movable sleeve (561) is movably sleeved on the inner side of the rotating sleeve (51), a sliding rod (563) is fixedly connected at the axis of the inner lower surface of the rotating sleeve (51), the upper end of the sliding rod (563) is fixedly connected to a first truncated platform (564), and the lower surface of the first truncated platform (564) is overlapped with four annularly distributed limiting blocks (56 5), two limiting rods (566) are movably sleeved on both sides of the four limiting blocks (565), one end of the limiting rod (566) away from the sliding rod (563) is fixedly connected to the inner wall of the movable sleeve (561), and the outer walls of the eight limiting rods (566) are movably sleeved with a first spring (567), and the first spring (567) is located on the side of the limiting block (565) away from the sliding rod (563), and the outer wall of the sliding rod (563) is slidably connected with a second frustum (568).

7. The ergonomic curved keyboard according to claim 6, characterized in that: Four annularly distributed telescopic rods (562) are fixedly connected between the inner upper surface of the movable sleeve (561) and the inner lower surface of the rotating sleeve (51); a circular plate is fixedly connected to the middle of the outer walls of the four telescopic rods (562); and a second spring (569) is movably sleeved on the outer walls of the four telescopic rods (562).

8. The ergonomic curved keyboard according to claim 6, characterized in that: The outer wall of the movable sleeve (561) is provided with a plurality of annularly distributed sliding grooves, and the inner side of the rotating sleeve (51) is provided with a plurality of annularly distributed limiting strips, and the limiting strips are slidably connected to the inner side of the sliding grooves.

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