阅读说明：本技术 一种键盘发电结构及其供电方法 (Keyboard power generation structure and power supply method thereof ) 是由 李静 刘超然 陈世昌 孟雨亭 卢海燕 林志成 杨锐 于 2021-08-06 设计创作，主要内容包括：本发明涉及一种键盘发电结构及其供电方法,包括键盘盒,键盘盒的一侧安装并连通有过滤盒,键盘盒的另一侧安装并连通有风扇,过滤盒的顶部安装有电池,键盘盒的内侧中部安装有电路板,按键嵌设在电路板的上侧面且与电路板电性连接,每个键帽的下方均设置有感应发电机构,感应发电机构嵌设在电路板的下侧面且与电路板电性连接,感应发电机构通过电路板与电池电性连接,按压键帽后,传动柱下压,使得使用者在使用过程中按压方便,无需进行其他传动操作,十分省力,保持敲击过程中的机械能最大程度地转化为电能,风扇对电路板的上下两侧进行风冷式降温,通过防水罩防尘防水,使本键盘发电机构防尘防水易清理。(The invention relates to a keyboard power generation structure and a power supply method thereof, which comprises a keyboard box, wherein one side of the keyboard box is provided with and communicated with a filter box, the other side of the keyboard box is provided with and communicated with a fan, the top of the filter box is provided with a battery, the middle part of the inner side of the keyboard box is provided with a circuit board, keys are embedded on the upper side surface of the circuit board and are electrically connected with the circuit board, an induction power generation mechanism is arranged below each key cap, the induction power generation mechanism is embedded on the lower side surface of the circuit board and is electrically connected with the circuit board, the induction power generation mechanism is electrically connected with the battery through the circuit board, after the key caps are pressed, a transmission column is pressed downwards, so that a user can press conveniently in the using process without other transmission operations, the labor is saved, the mechanical energy in the knocking process is kept to be converted into electric energy to the maximum degree, the fan carries out air-cooled cooling on the upper side and the lower side of the circuit board, and the fan is dustproof and waterproof through a waterproof cover, the keyboard power generation mechanism is dustproof and waterproof and is easy to clean.)

1. The keyboard power generation structure comprises a keyboard box (1), wherein a plurality of keys are installed on the keyboard box (1), each key comprises a keycap (2), and the keyboard power generation structure is characterized in that a filter box (3) is installed on one side of the keyboard box (1), a fan (4) is installed on the other side of the keyboard box (1), a battery (5) is installed at the top of the filter box (3), a circuit board (6) is installed in the keyboard box (1), the keys are electrically connected with the circuit board (6), an induction power generation mechanism is arranged below each key, and the induction power generation mechanisms are electrically connected with the batteries (5) through the circuit board (6).

2. The keyboard power generation structure according to claim 1, wherein an elastic corrugated pipe (7) is arranged between the key cap (2) and the keyboard box (1), a clamping ring (10) is arranged at the top end of the elastic corrugated pipe (7), and the clamping ring (10) is in clamping connection with an elastic clamping ring (9).

3. The keyboard power generation structure of claim 2, wherein the bottom inner side of the key cap (2) is bent inwards, and the elastic snap ring (9) is connected with the key cap (2) in a sealing way.

4. A keyboard power generation structure according to claim 2, wherein the bottom end of the elastic corrugated tube (7) is provided with a connecting ring (11), the bottom end of the connecting ring (11) is provided with an elastic collar (12), and the elastic collar (12) is embedded on the keyboard box (1).

5. The keyboard power generation structure according to claim 1, wherein a support cylinder (14) is arranged below the key cap (2), a sliding circular hole is formed in the top of the support cylinder (14), a support column (13) penetrates through the sliding circular hole, a limiting disc (15) is arranged at the bottom of the support column (13), and a transmission column (17) is fixedly connected to the center of the lower side surface of the limiting disc (15).

6. The keyboard power generation structure according to claim 5, wherein the induction power generation mechanism comprises permanent magnets (20), the lower half section of the transmission column (17) penetrates through the bottom center of the support cylinder (14) and the circuit board (6) and extends downwards, a support square piece (19) is fixedly connected to the lower end of the transmission column (17), and the permanent magnets (20) are mounted on two sides of the lower surface of the support square piece (19).

7. The keyboard power generation structure according to claim 6, wherein a coil set (21) is arranged right below the supporting square piece (19), and the height of the coil set (21) is consistent with that of the permanent magnet blocks (20).

8. The keyboard power generation structure of claim 7, wherein the coil set (21) comprises a plurality of power generation coils (24), and a PXE-impregnated plastic film is arranged between adjacent power generation coils (24) and at the center of each power generation coil (24).

9. The keyboard power generation structure of claim 8, wherein the power generation coils (24) are arranged in a row at equal intervals, each power generation coil (24) is connected in series with each other through a lead (22), and the permanent magnets (20) and the coil groups (21) are covered with support pipes (23) at the periphery.

10. A method of powering a keyboard power generation structure, the method comprising:

the method comprises the following steps: the fan (4) extracts hot air, and simultaneously low-temperature air enters the keyboard box (1) after being filtered by the filter screen (27) to carry out air-cooled cooling on the upper side and the lower side of the circuit board (6);

step two: after the key cap (2) is pressed, the limiting wafer (15) moves downwards along with the key cap, and when the potential contact point of the limiting wafer (15) is abutted with the potential contact point of the supporting cylinder (14), an electric signal is sent to the circuit board (6) so as to complete the electric signal input of the keyboard;

step three: after the keycap (2) is pressed, the transmission column (17) is pressed down, the permanent magnet blocks (20) move downwards along with the transmission column, each power generation coil (24) of the coil group (21) cuts magnetic lines of force to form induced current, when keys on the keyboard box (1) are used for regular knocking, mechanical energy is converted into electric energy, the electric energy is rectified through the circuit board (6), and the electric energy is finally stored in the battery (5);

step four: the keycap (2) is pressed and rebounds along with the spring (18), the keycap (2) rises, and air with low temperature enters the waterproof cover along the air hole (16), so that the key shaft is kept to be cooled;

step five; when the surface becomes dirty, the keyboard can be cleaned conveniently by directly spraying water to the surface and wiping water drops with clean water absorption cloth:

step six: when the filter box (3) is cleaned, the limiting clamping block (28) is moved into the clamping groove (29), then the drawing block (25) is drawn out, the supporting frame (26) and the filter screen (27) are drawn out and cleaned one by one, and therefore the filter box (3) is cleaned.

Technical Field

The invention relates to the technical field of keyboards, in particular to a keyboard power generation structure and a power supply method thereof.

Background

With the development of short-distance wireless communication technologies such as bluetooth, RFID, Wi-Fi, etc., wireless keyboards, in which a keyboard body and a computer are not directly connected by physical wires and are connected to a PC through a wireless communication technology, are gaining more and more favor of people and are rapidly popularized.

The invention patent with publication number CN111403212A discloses a self-generating power supply key structure and a wireless keyboard, wherein in the key structure, a bearing is coaxially arranged in the middle of a touch pad, and a rotor assembly is rotationally connected with the touch pad through the bearing; the spring is sleeved outside the rotor of the rotor assembly, the magnet is arranged outside the spring, the top ends of the spring and the magnet are fixedly connected with the contact disc, and the bottom end of the spring is fixedly connected with the base; the rotor is internally provided with a plurality of coils which are wound in a direction vertical to the rotation direction of the rotor, and two ends of the plurality of coils are respectively in effective contact with the first electric brush and the second electric brush; compared with the invention, the rectifier has no waterproof structure and no cooling structure, and the implementation process is difficult.

At present, wireless keyboard duration on the market is low, in case the battery exhausts, equipment need change the battery or charge, this greatly increased consumer's use cost, among the current equipment, keyboard power generation structure can produce a large amount of heats in the operation process, but lack the cooling structure, lead to the unable normal operating of keyboard power generation structure or operate slowly, and current keyboard power generation structure can not swiftly clear up, especially can not wash with water, lead to using to take place often that the spot piles up and cause the equipment to be abnormal.

Disclosure of Invention

The present invention is directed to a keyboard power generating structure and a power supply method thereof.

The technical problem solved by the invention is as follows:

(1) the existing keyboard does not have a power generation structure, and cannot utilize mechanical energy generated by knocking and pressing, so that the energy is wasted;

(2) the existing keyboard power generation structure does not have a cooling structure for power generation, can not well dissipate heat, and is easy to cause the abnormality of power generation equipment;

(3) the existing keyboard power generation structure does not have the functions of water resistance, dust prevention and easy cleaning, and equipment abnormality is easily caused.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a keyboard electricity generation structure, including the keyboard box, the upper surface of keyboard box is the array arrangement and has a plurality of rows of button, the button includes the key cap, one side installation and the intercommunication of keyboard box have the filter cartridge, the opposite side installation and the intercommunication of keyboard box have the fan, the battery is installed at the top of filter cartridge, the inboard mid-mounting of keyboard box has the circuit board, the button inlays to establish at the side of going up of circuit board and with circuit board electric connection, the below of every key cap all is provided with response power generation mechanism, response power generation mechanism inlays to establish at the downside of circuit board and with circuit board electric connection, response power generation mechanism passes through circuit board and battery electric connection.

According to a further scheme of the invention, a waterproof cover is arranged between the keycap and the keyboard box and comprises an elastic corrugated pipe, the top end of the elastic corrugated pipe is fixedly connected with a clamping ring, and the top end of the elastic corrugated pipe is connected with an elastic clamping ring through the clamping ring in a clamping manner.

As a further scheme of the invention, the inner side of the bottom of the keycap is inwards bent into a ring shape, the inner side of the bottom of the keycap is coated with sealant, and the elastic snap ring is hermetically connected with the bottom of the keycap.

As a further scheme of the invention, the bottom end of the elastic corrugated pipe is fixedly connected with a connecting ring, the bottom end of the connecting ring is fixedly connected with an elastic clamping ring, the elastic clamping ring is embedded in the upper surface of the keyboard box, and the lower surface of the connecting ring is abutted against the upper surface of the keyboard box.

According to a further scheme of the invention, a supporting block is fixedly connected to the center of the top of the inner side of the keycap, a key shaft is arranged below the supporting block and comprises a supporting cylinder, a sliding circular hole is formed in the top of the supporting cylinder, a supporting column penetrates through the sliding circular hole, a limiting wafer is fixedly connected to the bottom of the supporting column, and a transmission column is fixedly connected to the center of the lower side surface of the limiting wafer.

As a further scheme of the invention, the induction generating mechanism comprises permanent magnets, a coil group and a supporting tube, the lower half section of the transmission column penetrates through the center of the bottom of the supporting tube and the circuit board and extends downwards, the lower end of the transmission column is fixedly connected with a supporting square piece, and the permanent magnets are arranged on two sides of the lower surface of the supporting square piece.

As a further scheme of the invention, a coil group is arranged right below the supporting square piece, the upper end of the coil group is flush with the lower end of the permanent magnet, and the height of the coil group is consistent with that of the permanent magnet.

As a further scheme of the invention, the coil group comprises a plurality of generating coils, and PXE-soaked plastic films are arranged between every two adjacent generating coils and in the center of each generating coil.

As a further scheme of the invention, the generating coils are arranged in a line at equal intervals, each generating coil is connected in series through a lead, the coil group is electrically connected with the circuit board through the lead, and the permanent magnets and the periphery of the coil group are covered with the supporting tube.

A method of powering a keyboard power generation structure, the method comprising:

the method comprises the following steps: the fan extracts hot air from the keyboard and conveys the hot air to the outside, and meanwhile, the outside air with low temperature enters the keyboard after being filtered by the filter screen in the filter box, and the upper side and the lower side of the circuit board are cooled in an air cooling mode;

step two: after the keycap is pressed, the limiting wafer moves downwards along with the keycap, and when the potential contact point of the limiting wafer is abutted with the potential contact point of the supporting cylinder, an electric signal is sent to the circuit board, so that the electric signal input of the keyboard is completed;

step three: after the keycap is pressed, the transmission column is pressed down, the permanent magnet blocks move downwards along with the transmission column, each power generation coil of the coil group cuts magnetic lines of force to form induced current, induced electromotive force is increased through series connection of the power generation coils, when keys on the keyboard box are used for regular knocking, mechanical energy generated during sinking is converted into electric energy, and the electric energy is rectified through the circuit board and finally stored in the battery;

step four: after the keycap is pressed, air is compressed and discharged into the keyboard box through the air holes, the keycap rises along with the rebound of the spring, and air with low temperature enters the waterproof cover along the air holes, so that the key shaft is kept cooled;

step five; after the surface of keyboard box and key cap became dirty, directly to the surface water spray of keyboard box and key cap and wipe off the drop of water with clean cloth that absorbs water, can conveniently wash this keyboard:

step six: when clearing up the filter cartridge, take out spacing fixture block from the filter cartridge and remove to the joint groove in, take out the piece of drawing afterwards, take out carriage and filter screen from the filter cartridge and wash one by one, avoid because debris stop up the filtration pore of crossing of filter screen and lead to can not cooling key shaft and response power generation mechanism.

The invention has the beneficial effects that:

(1) after the keycap is pressed, the transmission column is pressed down, the permanent magnet blocks move downwards along with the transmission column, each power generation coil of the coil group cuts magnetic lines of force to form induced current, induced electromotive force is increased through series connection of the power generation coils, when keys on the keyboard box are used for regular knocking, mechanical energy generated during sinking is converted into electric energy, the electric energy is rectified through a circuit board and finally stored in a battery, the coil group can generate the induced current to the maximum degree through moving the permanent magnet blocks and keeping the coil group stationary, the number of the power generation coils is increased to the greatest extent through shortening gaps between the power generation coils and gaps between adjacent power generation coils, the induced current is increased, no friction exists between the coil group and the permanent magnet blocks, a spring only needs to bear the gravity of the permanent magnet blocks without bearing the weight of other power generation mechanisms, the power generation process is simple, and no rotation or other actions are needed, the pressing force of the keyboard is kept consistent with that of a common keyboard, other transmission operations are not needed, labor is saved, and mechanical energy in the knocking process is converted into electric energy to the maximum extent;

(2) after the key caps are pressed, air is compressed and discharged into the keyboard box through the air holes, the key caps rise along with the rebounding of the springs, the air with low temperature enters the waterproof cover along the air holes, so that the key shafts are kept cooled, the fan extracts hot air from the keyboard and conveys the hot air to the outside, meanwhile, the outside air with low temperature enters the keyboard after being filtered by the filter screen in the filter box, the air cooling is carried out on the upper side and the lower side of the circuit board, the magnetic flux of the permanent magnets is kept unchanged through the cooling, the reduction of the magnetic flux of the permanent magnets caused by overheating is prevented, and the induced electromotive force is reduced;

(3) after the surface of keyboard box and key cap becomes dirty, through the buckler dustproof and waterproof, direct to the surface water spray of keyboard box and key cap and with clean cloth that absorbs water erase the drop of water, can conveniently wash this keyboard, when clearing up the filter box, take out spacing fixture block from the filter box and remove to the joint groove in, take out the drawing piece afterwards, take out carriage and filter screen from the filter box and wash one by one, avoid because debris stop up the filtration pore of crossing of filter screen and lead to can not cooling key shaft and response power generation mechanism, and make this keyboard power generation mechanism dustproof and waterproof easy clearance.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the key of the present invention;

FIG. 2 is a schematic structural view of the overall structure of the present invention;

FIG. 3 is a cross-sectional view of a portion of the structure of the present invention;

FIG. 4 is a schematic top view of the inductive power generating mechanism of the present invention;

FIG. 5 is a schematic view of the overall construction of the filter cassette of the present invention;

FIG. 6 is a schematic view of a partial structure of the supporting frame according to the present invention;

in the figure: 1. a keyboard box; 2. a keycap; 3. a filter cartridge; 4. a fan; 5. a battery; 6. a circuit board; 7. an elastic bellows; 8. a support block; 9. an elastic snap ring; 10. a clamping ring; 11. a connecting ring; 12. an elastic collar; 13. a support pillar; 14. a support cylinder; 15. limiting the wafer; 16. air holes; 17. a drive post; 18. a spring; 19. supporting the square sheet; 20. permanent magnet blocks; 21. a coil assembly; 22. a wire; 23. supporting a tube; 24. a power generating coil; 25. drawing the block; 26. a support frame; 27. filtering with a screen; 28. a limiting clamping block; 29. a clamping groove.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1-6: a keyboard power generation structure comprises a keyboard box 1, wherein a plurality of rows of keys are arrayed on the upper surface of the keyboard box 1, each key comprises a keycap 2, a filter box 3 is installed and communicated on one side of the keyboard box 1, a fan 4 is installed and communicated on the other side of the keyboard box 1, a battery 5 is installed at the top of the filter box 3, a circuit board 6 is installed in the middle of the inner side of the keyboard box 1, the keys are embedded on the upper side of the circuit board 6 and are electrically connected with the circuit board 6, an induction power generation mechanism is arranged below each keycap 2 and is embedded on the lower side of the circuit board 6 and is electrically connected with the circuit board 6, the induction power generation mechanism is electrically connected with the battery 5 through the circuit board 6, so that generated electric energy is stored in the battery 5, when the keys on the keyboard box 1 are used for regular knocking, the keys sink and drive the induction power generation mechanism, so that mechanical energy generated when the keys sink is converted into electric energy, and finally stored in the battery 5 by rectification of the circuit board 6.

A waterproof cover is arranged between the key cap 2 and the keyboard box 1 and comprises an elastic corrugated pipe 7, the top end of the elastic corrugated pipe 7 is fixedly connected with a clamping ring 10, the top end of the elastic corrugated pipe 7 is connected with an elastic snap ring 9 in a clamping manner through the clamping ring 10, the inner side of the bottom of the key cap 2 is inwards bent into a circular ring shape, the inner side of the bottom of the key cap 2 is coated with sealant, the elastic snap ring 9 is hermetically connected with the bottom of the key cap 2, the bottom end of the elastic corrugated pipe 7 is fixedly connected with a connecting ring 11, the bottom end of the connecting ring 11 is fixedly connected with an elastic snap ring 12, the elastic snap ring 12 is embedded in the upper surface of the keyboard box 1, the lower surface of the connecting ring 11 is abutted with the upper surface of the keyboard box 1, when the key cap 2 is pressed to periodically move up and down, the elastic corrugated pipe 7 stretches along with the connecting ring, and the elastic corrugated pipe 7 prevents objects floating in air such as dust and water drops from entering the key and the keyboard box 1, therefore, the keyboard can be conveniently cleaned by ensuring dustproof and waterproof performance, and directly spraying water to the surfaces of the keyboard box 1 and the keycap 2 and wiping water drops by using clean water absorption cloth after the surfaces of the keyboard box 1 and the keycap 2 become dirty.

The center of the top of the inner side of the keycap 2 is fixedly connected with a supporting block 8, a key shaft is arranged below the supporting block 8, the key shaft comprises a supporting cylinder 14, the top of the supporting cylinder 14 is provided with a sliding round hole, a supporting column 13 is arranged in the sliding round hole in a penetrating way, the bottom of the supporting column 13 is fixedly connected with a limiting wafer 15, the top of the supporting column 13 is provided with a limiting round groove, the bottom of the supporting block 8 is arranged on the supporting column 13 through being clamped and connected with the limiting round groove, the top edge of the limiting wafer 15 is abutted against the inner side surface of the top of the supporting cylinder 14, the periphery of the limiting wafer 15 is slidably connected with the inner side wall of the supporting cylinder 14, the center of the lower side surface of the limiting wafer 15 is fixedly connected with a transmission column 17, the periphery of the upper half section of the transmission column 17 is slidably sleeved with a spring 18, the lower side edge of the limiting wafer 15 and the inner side bottom edge of the supporting cylinder 14 are both provided with potential contact points, and the potential contact points are electrically connected with the circuit board 6, the bottom of the spring 18 is fixedly arranged at the bottom of the supporting cylinder 14, the top of the spring 18 is arranged at the bottom of the limiting wafer 15, when the keycap 2 is pressed, the limiting wafer 15 moves downwards along with the spring, and when the potential contact point of the limiting wafer 15 is abutted with the potential contact point of the supporting cylinder 14, an electric signal is sent to the circuit board 6, so that the electric signal input of the keyboard is completed;

the induction generating mechanism comprises permanent magnets 20, coil groups 21 and a support tube 23, the lower half section of the transmission column 17 penetrates through the center of the bottom of the support cylinder 14 and the circuit board 6 and extends downwards, the lower end of the transmission column 17 is fixedly connected with a support square piece 19, the permanent magnets 20 are respectively arranged on two sides of the lower surface of the support square piece 19, the opposite side magnetic poles of the two permanent magnets 20 are opposite, the coil groups 21 are arranged right below the support square piece 19, the upper ends of the coil groups 21 are flush with the lower ends of the permanent magnets 20, the height of the coil groups 21 is consistent with that of the permanent magnets 20, each coil group 21 comprises a plurality of generating coils 24, a PXE-soaked plastic film is respectively arranged between the adjacent generating coils 24 and at the center of each generating coil 24, the generating coils 24 are arranged in a row at equal intervals, each generating coil 24 is mutually connected in series through a lead 22, and the coil groups 21 are electrically connected with the circuit board 6 through leads 22, the permanent magnet blocks 20 and the coil groups 21 are covered with a support pipe 23 at the outer circumference, the upper end of the support pipe 23 is fixedly connected to the lower surface of the circuit board 6, the lower end of the support pipe 23 is fixedly connected to the keyboard box 1, the lead wire 22 penetrates through the support pipe 23 and is arranged at the outer side of the support pipe 23, when the permanent magnet blocks 20 move downwards along with the pressing down of the transmission column 17, each generating coil 24 of the coil groups 21 cuts magnetic lines of force to form induced current, the induced electromotive force is increased through the series connection of the generating coils 24, and then the induced current is stored as electric energy through the circuit board 6.

The filter box 3 is of a hollow structure, the front side and the rear side of the filter box 3 are in a through shape, one side of the filter box 3 is parallelly provided with a plurality of square grooves which are distributed at equal intervals, the filter box 3 is slidably clamped with a plurality of supporting frames 26 through the square grooves, a filter screen 27 is embedded in the center of each supporting frame 26, one side of each supporting frame 26 close to the square groove is provided with a drawing block 25, the two sides of the surface of one end of each supporting frame 26 are respectively provided with a clamping groove 29, the two clamping grooves 29 are symmetrically arranged relative to the drawing block 25, a limiting clamping block 28 is slidably clamped in each clamping groove 29, the limiting clamping block 28 penetrates through the groove wall of one side of each clamping groove 29 and extends outwards, the supporting frame 26 is mutually clamped with the inner side wall of the filter box 3 through the limiting clamping block 28 so as to be installed in the filter box 3, the upper inner side face and the lower inner side face of the filter box 3 are respectively provided with a clamping sliding groove corresponding to each supporting frame 26 one by one, and the supporting frames 26 are clamped with the clamping sliding grooves in a sliding mode so as to be stable and parallel to each other;

when the keyboard is in operation, the fan 4 extracts hot air from the keyboard and conveys the hot air to the outside, meanwhile, the outside air with low temperature enters the keyboard after being filtered by the filter screen 27 in the filter box 3, the upper side and the lower side of the circuit board 6 are cooled in an air cooling mode, a plurality of air holes 16 are formed in the upper surface of the keyboard box 1, the air holes 16 are evenly divided into a plurality of groups, each group of air holes 16 are arranged between the waterproof cover and the supporting cylinder 14, each group of air holes 16 are evenly distributed around the supporting cylinder 14 in an equal angle mode, when the key cap 2 is pressed, the air in the cavity formed by the key cap 2, the waterproof case, the support cylinder 14 and the keyboard box 1 is compressed and discharged into the keyboard box 1 through the air holes 16, and is discharged out of the keyboard box 1 along with the air flow passing through the fan 4, meanwhile, as the spring 18 rebounds, the keycap 2 rises, and air with low temperature enters the waterproof cover along the air hole 16, so that the key shaft is kept cool.

When clearing up filter box 3, take out spacing fixture block 28 from filter box 3 and remove to in the joint groove 29, take out the piece 25 of drawing afterwards, take out carriage 26 and filter screen 27 from filter box 3 and wash one by one, avoid because debris stop up the filtration pore of crossing filter screen 27 and lead to can not cooling key axle and response power generation mechanism.

A method of powering a keyboard power generation structure, the method comprising:

the method comprises the following steps: the fan 4 extracts hot air from the keyboard and conveys the hot air to the outside, and meanwhile, the outside air with low temperature enters the keyboard after being filtered by the filter screen 27 in the filter box 3 to carry out air-cooled cooling on the upper side and the lower side of the circuit board 6;

step two: after the key cap 2 is pressed, the limiting wafer 15 moves downwards along with the key cap, and when the potential contact point of the limiting wafer 15 is abutted with the potential contact point of the supporting cylinder 14, an electric signal is sent to the circuit board 6, so that the electric signal input of the keyboard is completed;

step three: after the keycap 2 is pressed, the transmission column 17 is pressed down, the permanent magnet blocks 20 move downwards along with the transmission column, each power generation coil 24 of the coil group 21 cuts magnetic lines of force to form induced current, induced electromotive force is increased through the series connection of the power generation coils 24, when keys on the keyboard box 1 are used for regular knocking, mechanical energy generated during sinking is converted into electric energy, and the electric energy is rectified through the circuit board 6 and finally stored in the battery 5;

step four: after the key cap 2 is pressed, air is compressed and discharged into the keyboard box 1 through the air hole 16, the key cap 2 rises along with the rebound of the spring 18, and air with low temperature enters the waterproof cover along the air hole 16, so that the key shaft is kept cool;

step five; after the surface of keyboard box 1 and key cap 2 became dirty, directly to the surface water spray of keyboard box 1 and key cap 2 and wipe off the drop of water with the clean cloth that absorbs water, can conveniently wash this keyboard:

step six: when the filter box 3 is cleaned, the limiting clamping block 28 is pulled out from the filter box 3 and is moved into the clamping groove 29, then the pulling block 25 is pulled out, the supporting frame 26 and the filter screen 27 are pulled out from the filter box 3 and are cleaned one by one, and the problem that the key shaft and the induction generating mechanism cannot be cooled due to the fact that sundries block the filter holes of the filter screen 27 is avoided.

When the key cap is used, the key cap 2 is pressed, the transmission column 17 is pressed downwards, the permanent magnet blocks 20 move downwards along with the key cap, each power generation coil 24 of the coil group 21 cuts magnetic lines of force to form induced current, induced electromotive force is increased through the series connection of the power generation coils 24, when keys on the key box 1 are used for regular knocking, mechanical energy generated during sinking is converted into electric energy, the electric energy is rectified through the circuit board 6 and finally stored in the battery 5, the coil group 21 can generate the induced current to the maximum degree by moving the permanent magnet blocks without moving the coil group 21, the number of the power generation coils 24 is increased as much as possible by shortening the gaps between the power generation coils 24 and the gaps between the adjacent power generation coils 24, the induced current is increased, no friction exists between the coil group 21 and the permanent magnet blocks 20, and the spring 18 only needs to bear the gravity of the permanent magnet blocks 20 without bearing the weight of other power generation mechanisms, the power generation process is simple, rotation or other actions are not needed, so that a user can press conveniently in the use process, the pressing force of the user is consistent with that of a common keyboard, other transmission operation is not needed, the labor is saved, and the mechanical energy in the knocking process is converted into electric energy to the maximum extent;

after the key cap 2 is pressed, air is compressed and discharged into the keyboard box 1 through the air hole 16, the key cap 2 rises along with the rebound of the spring 18, the air with low temperature enters the waterproof cover along the air hole 16, so that the key shaft is kept to be cooled, the fan 4 extracts hot air from the keyboard and conveys the hot air to the outside, meanwhile, the outside air with low temperature enters the keyboard after being filtered by the filter screen 27 in the filter box 3, the air-cooled cooling is carried out on the upper side and the lower side of the circuit board 6, the magnetic flux of the permanent magnet block 20 is kept unchanged through the cooling, the reduction of the magnetic flux of the permanent magnet block 20 caused by overheating is prevented, and the induced electromotive force is reduced;

after the surfaces of the keyboard box 1 and the key cap 2 become dirty, water is directly sprayed to the surfaces of the keyboard box 1 and the key cap 2, and water drops are erased by clean water absorption cloth, so that the keyboard can be conveniently cleaned, when the filter box 3 is cleaned, the limiting clamping block 28 is taken out from the filter box 3 and moved into the clamping groove 29, then the drawing block 25 is drawn out, the supporting frame 26 and the filter screen 27 are taken out from the filter box 3 and cleaned one by one, the problem that the key shaft and the induction generating mechanism cannot be cooled due to the fact that sundries block the filter holes of the filter screen 27 is avoided, and the keyboard generating mechanism is dustproof, waterproof and easy to clean is solved.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.