Key structure and forming method therefor, and wireless keyboard

Abstract

Provided in the present disclosure are a key structure and a forming method therefor, and a wireless keyboard. The key structure comprises a key cap structure and a power generation module. The power generation module comprises a deformation component, a magnet structure and a magnetically conductive structure. The key cap structure comprises an elastic component, the deformation component being connected to the elastic component. The magnet structure comprises a first magnetically conductive sheet, a second magnetically conductive sheet and a magnet, wherein the first magnetically conductive sheet is connected to the deformation component, and the magnet is located between the first magnetically conductive sheet and the second magnetically conductive sheet. A coil is wound on a first portion of the magnetically conductive structure, and an end portion of the first portion facing the magnet structure is located between the first magnetically conductive sheet and the second magnetically conductive sheet. When the key cap structure is pressed to move towards the deformation component, the key structure changes from a first state to a second state. In the first state, the second magnetically conductive sheet is in contact with the end portion of the first portion of the magnetically conductive structure facing the magnet structure; and in the second state, the first magnetically conductive sheet is in contact with the end portion of the first portion of the magnetically conductive structure facing the magnet structure.

Description

Key structure and forming method thereof, and wireless keyboard TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a key structure and forming method thereof, and a wireless keyboard. BACKGROUND

[0002] A keyboard is an essential accessory on various computer devices, and is a tool that can be used by a user to input information to a computer device. According to the communication mode between the keyboard and the computer device, the keyboard can be divided into two categories: wired keyboard and wireless keyboard. According to the energy supply mode required for the operation of the keyboard, the keyboard can be further divided into wired power supply keyboard, keyboard powered by replaceable battery, keyboard with built-in rechargeable battery and requiring wired charging, and keyboard with built-in rechargeable battery and supporting wireless charging.

[0003] At present, most wireless keyboards used for computer devices need to rely on a battery as the source of energy for normal operation. In order to ensure the normal operation of the wireless keyboard, the energy of the power supply battery must be maintained in a normal state.

[0004] In addition, the normal operation of the wireless keyboard generally requires irregular battery replacement and charging behavior, which brings inconvenience to the user. Disposable batteries provide energy for the wireless keyboard, which often has a limited life span and needs to be replaced once depleted. This not only increases the user's economic burden and time cost, but also leads to waste of battery resources and adverse effects on the environment. SUMMARY

[0005] The present disclosure provides a key structure and forming method thereof, and a wireless keyboard.

[0006] In a first aspect, the present disclosure provides a key structure, comprising a keycap structure and a power generation module. The power generation module comprises a deformation component, a magnet structure and a magnetic conduction structure. The keycap structure comprises an elastic component, and the deformation component is connected to the elastic component. The magnet structure comprises a first magnetic conduction sheet, a second magnetic conduction sheet and a magnet, the first magnetic conduction sheet is connected to the deformation component, and the magnet is located between the first magnetic conduction sheet and the second magnetic conduction sheet. A coil is wound on a first part of the magnetic conduction structure, and an end of the first part towards the magnet structure is located between the first magnetic conduction sheet and the second magnetic conduction sheet. When the keycap structure is pressed and moves towards the deformation component, the key structure changes from a first state to a second state. In the first state, the second magnetic conduction sheet contacts the end of the first part of the magnetic conduction structure towards the magnet structure, and in the second state, the first magnetic conduction sheet contacts the end of the first part of the magnetic conduction structure towards the magnetic structure.

[0007] In some embodiments, in the first state, the second magnetic conductive sheet contacts the end of the magnetic conductive structure to form a first energy potential well, and in the second state, the first magnetic conductive sheet contacts the end of the magnetic conductive structure to form a second energy potential well. During the conversion process of the first energy potential well and the second energy potential well caused by the pressure on the keycap structure, the key structure obtains mechanical potential energy with a minimum value and the converted electrical energy to meet the demand of load power consumption.

[0008] In some embodiments, the magnet contacts the first part of the first magnetic conductive sheet and the first part of the second magnetic conductive sheet respectively. The first part of the magnetic conductive structure is located between the second part of the first magnetic conductive sheet and the second part of the second magnetic conductive sheet towards the part of the magnet structure, and the first part of the magnetic conductive structure is wound with the coil away from the part of the magnet structure.

[0009] In some embodiments, along the direction of the keycap pointing to the deformation component, the first part of the deformation component contacts the first magnetic conductive sheet, and the first part of the deformation component protrudes from the second part of the deformation component.

[0010] In some embodiments, the key structure further comprises a first clamping piece fixed on the deformation component.

[0011] In some embodiments, the key structure comprises a support structure connected with the magnet structure, and the support structure is clamped between the first magnetic conductive sheet and the second magnetic conductive sheet.

[0012] In some embodiments, the key structure comprises an elastic piece fixed on the side of the support structure away from the keycap structure.

[0013] In some embodiments, the key structure comprises a first fastener. The first part of the first magnetic conductive sheet has a first protruding structure protruding from the magnet, and the first part of the second magnetic conductive sheet has a second protruding structure protruding from the magnet; the first protruding structure is provided with a first opening, and the second protruding structure is provided with a second opening at the corresponding position; the first fastener passes through the first opening and the second opening to fasten the support structure and the magnet structure.

[0014] In some embodiments, the support structure comprises a first support piece, a second support piece and a third support piece connected in sequence, and the first support piece and the third support piece are located on the same side of the second support piece. The number of the first fasteners is two, and the part of the first support piece close to the second support piece is provided with a clamping groove matched with one of the first fasteners, and the part of the third support piece close to the second support piece is provided with a clamping groove matched with the other first fastener.

[0015] In some embodiments, the key structure further comprises two second clamping nails, one of which is fixed to the first support near the second support and is fixedly connected with one elastic member, and the other of which is fixed to the third support near the second support and is fixedly connected with the other elastic member.

[0016] In some embodiments, the key structure comprises a second fastener and a base, the base comprising a base bottom surface and a first base protruding structure, the first base protruding structure being located at one end of the base bottom surface and protruding from the base bottom surface in the direction of the keycap structure along the first direction. The first base protruding structure is provided with a first connecting hole, and the second part of the deformation component is provided with a second connecting hole on the side away from the first part of the deformation component, the positions of the first connecting hole and the second connecting hole correspond, and the second fastener passes through the first connecting hole and the second connecting hole to fixedly connect the deformation component and the base.

[0017] In some embodiments, along the second direction, the opposite sides of the first base protruding structure are provided with two third clamping nails, and the end of the first support away from the second support is provided with one third connecting hole, and the end of the third support away from the second support is provided with another third connecting hole. One of the third connecting holes is rotatably connected with one of the third clamping nails, and the other third connecting hole is rotatably connected with the other third clamping nail.

[0018] In some embodiments, the base comprises a tail structure and a clamping tongue structure, and the magnetic conduction structure further comprises a second part and a connecting part. The first part of the magnetic conduction structure, the connecting part and the second part of the magnetic conduction structure are connected in sequence, and the first part of the magnetic conduction structure and the second part of the magnetic conduction structure are located on the same side of the connecting part. The tail structure is located on the first base protruding structure, and along the first direction, the clamping tongue structure is located at the other end of the base bottom surface. The second part of the magnetic conduction structure is clamped with the clamping tongue structure away from the end surface of the connecting part, and the connecting part is clamped with the tail structure, so that the magnetic conduction structure is clamped between the clamping tongue structure and the tail structure.

[0019] In some embodiments, the base further comprises a second base protruding structure, wherein along the second direction, the second base protruding structure is located at opposite ends of the base bottom surface and protrudes from the base bottom surface in the direction of the keycap structure. The second base protruding structure is provided with a clamping block, and the second magnetic conduction structure is provided with an arm matched with the clamping block, which is clamped with the clamping block.

[0020] In some embodiments, along the second direction, one elastic member abuts one end of the base bottom surface, and the other elastic member abuts the other end of the base bottom surface.

[0021] In a second aspect, the embodiments of the present disclosure provide a wireless keyboard, which comprises an energy collection circuit and the key structure in any of the above embodiments. The energy collection circuit is connected with the coil of the key structure, and is configured to collect the electric energy generated by the coil and send an electromagnetic wave signal according to the electric energy. The energy required for sending the electromagnetic wave signal is less than the minimum value of the mechanical potential energy of the key structure and the electric energy that can be converted.

[0022] In some embodiments, the energy collection circuit comprises a voltage signal conversion circuit, an energy storage capacitor and a voltage stabilizing circuit. The voltage signal conversion circuit is configured to receive the electric energy generated by the coil and convert the electric energy generated by the coil into a direct current voltage. The energy storage capacitor is coupled with the voltage signal conversion circuit, and the energy storage capacitor is configured to store the direct current voltage. The voltage stabilizing circuit is coupled with the energy storage capacitor, and the voltage stabilizing circuit is configured to convert the direct current voltage into a voltage for the microprocessor to work.

[0023] In some embodiments, the key structure comprises a base, and the base comprises a base bottom surface. The energy collection circuit is integrated on a circuit board, and the circuit board is connected with the base bottom surface.

[0024] In some embodiments, the wireless keyboard comprises a keyboard base, and the keyboard base comprises a plurality of base slots arranged in an array. A plurality of key structures are arranged one by one with the plurality of base slots, and the key structures are tightly connected with the corresponding base slots.

[0025] In a third aspect, the embodiments of the present disclosure provide a forming method of a key structure. The key structure comprises a keycap structure comprising an elastic component, and a power generation module comprising a deformation component, a magnet structure comprising a first magnetic guide sheet, a second magnetic guide sheet and a magnet, and a magnetic guide structure. A first part of the magnetic guide structure is wound with a coil. The forming method of the key structure comprises: connecting the deformation component with the elastic component; connecting the first magnetic guide sheet with the deformation component, and locating the magnet between the first magnetic guide sheet and the second magnetic guide sheet; and arranging the first part towards the end of the magnet structure between the first magnetic guide sheet and the second magnetic guide sheet. When the keycap structure is pressed and moves towards the deformation component, the key structure changes from a first state to a second state. In the first state, the second magnetic guide sheet contacts the end of the first part of the magnetic guide structure towards the magnet structure. In the second state, the first magnetic guide sheet contacts the end of the first part of the magnetic guide structure towards the magnet structure.

[0026] In some embodiments, the forming method of the key structure further comprises: contacting the magnet with the first part of the first magnetic guide sheet and the first part of the second magnetic guide sheet, respectively. The magnetic guide structure comprises the first part, the part of the first part towards the magnet structure is located between the second part of the first magnetic guide sheet and the second part of the second magnetic guide sheet, and the part of the first part away from the magnet structure is wound with the coil.

[0027] In some embodiments, the first opening is formed at the first protruding structure of the first magnetic conducting sheet, and the second opening is formed at the second protruding structure of the second magnetic conducting sheet. The method for forming the key structure further comprises: arranging the supporting structure between the first magnetic conducting sheet and the second magnetic conducting sheet, and passing the first fastener through the first opening and the second opening to fasten the supporting structure and the magnet structure.

[0028] In some embodiments, the power generation module further comprises a second fastener and a base, the base comprises a base bottom surface and a first base protruding structure, and a first connecting hole is formed at the first base protruding structure towards the position of the deformation component. A second connecting hole is formed at the second part of the deformation component away from the first part of the deformation component. The method for forming the key structure further comprises: passing the second fastener through the first connecting hole and the second connecting hole to connect the deformation component and the base.

[0029] In some embodiments, the base comprises a tail structure and a clamping structure, and the magnetic conducting structure further comprises a second part and a connecting part. The method for forming the key structure further comprises: clamping the second part of the magnetic conducting structure away from the end surface of the connecting part and the clamping structure, and clamping the connecting part and the tail structure, so that the magnetic conducting structure is clamped between the clamping structure and the tail structure.

[0030] The key structure of the embodiments of the present disclosure comprises two stable states, i.e. the first state and the second state described above. When the key structure is switched from the first state to the second state, the first part of the magnetic conducting structure undergoes a magnetic pole reversal. When the key structure is switched from the second state to the first state, the first part of the magnetic conducting structure also undergoes a magnetic pole reversal, and an induced electromotive force is generated in the coil through the magnetic pole reversal. When the keycap structure is pressed down, the mechanical system inside the key structure will be converted between the "energy potential well" corresponding to the two stable states. The kinetic energy of the magnet structure obtained from the conversion from the potential barrier to the potential well each time is related to the energy difference between the potential barrier point and the potential well point, which is related to the key structure and has been uniquely determined. Therefore, no matter how hard the user presses, as long as the magnetic pole reversal occurs, the kinetic energy obtained by the magnet structure will have a minimum value, which can ensure that each key action can be converted into stable electric energy, so that when the key structure is used in a wireless keyboard, it can provide stable electric energy for the wireless keyboard, so that the wireless keyboard no longer needs an additional battery to supply power.

[0031] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0032] Other features, objects, and advantages of this disclosure will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0033] Figure 1 is an exploded view of a button structure provided in an embodiment of this disclosure;

[0034] Figure 2 is a schematic diagram of a button structure in normal assembly according to an embodiment of this disclosure;

[0035] Figure 3 is a bottom view of a key structure including a keycap and a spring component in normal assembly according to an embodiment of the present disclosure;

[0036] Figure 4 is a right view of a key structure, including a keycap, an elastic component, and a deformable component, normally assembled according to an embodiment of this disclosure.

[0037] Figure 5 is a rear view of a button structure including a magnet structure and a support structure normally assembled according to an embodiment of the present disclosure;

[0038] Figure 6 is a right view of a button structure including a magnet structure and a support structure normally assembled according to an embodiment of the present disclosure;

[0039] Figure 7 is a top view of a base included in a button structure provided in an embodiment of this disclosure;

[0040] Figure 8 is a bottom view of the base included in a button structure provided in an embodiment of this disclosure;

[0041] Figure 9 is a right-section cross-sectional view of a button structure provided in an embodiment of this disclosure, showing the magnet structure, support structure, base, and magnetic conductive structure in normal assembly.

[0042] Figure 10 is a front view of a button structure in normal assembly according to an embodiment of this disclosure;

[0043] Figure 11 is a right view of a button structure in normal assembly according to an embodiment of this disclosure;

[0044] Figure 12 is a schematic diagram of the structure of a wireless keyboard provided in an embodiment of this disclosure;

[0045] Figure 13 is a schematic diagram of another wireless keyboard provided in an embodiment of this disclosure;

[0046] Figure 14 is a schematic diagram of the structure of a wireless keyboard base provided in an embodiment of this disclosure;

[0047] Figure 15 is a schematic diagram of the energy harvesting and signal transmission circuit and key structure of a wireless keyboard provided in an embodiment of this disclosure, which are normally assembled.

[0048] Fig. 16 is a schematic diagram of a system architecture of an energy collection and signal transmission circuit included in a wireless keyboard according to an embodiment of the present disclosure;

[0049] Fig. 17 is a flowchart of a process of receiving information transmitted by a wireless keyboard by a computer host according to an embodiment of the present disclosure;

[0050] Fig. 18 is a flowchart of a process of forming a key structure according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present disclosure are described herein with reference to the accompanying drawings. Although various detailed descriptions are provided in these embodiments for the purpose of understanding, those of ordinary skill in the art will understand that these embodiments and their detailed descriptions are merely exemplary, and that various modifications can be made to these embodiments without departing from the teachings of the present disclosure. Also, detailed descriptions of well-known functions and structures will be omitted herein for the sake of brevity and clarity. Furthermore, the embodiments and features of the embodiments in the present disclosure can be combined with each other as long as they do not conflict.

[0052] The wireless keyboard of the related art needs to be charged or have its battery replaced, which can cause pollution, waste, and inconvenience to users. The present disclosure provides a wireless keyboard that does not need a battery. The wireless keyboard does not rely on a disposable battery, a rechargeable battery, or any wired power supply, thereby fundamentally solving the problems of battery replacement and power supply faced by wireless keyboards and ensuring the complete reliability and convenient use of the keyboard system.

[0053] The wireless keyboard provided by the present disclosure can include a plurality of key structures. The key structure can include a keycap structure and a power generation module. The power generation module can include a deformation component, a magnet structure, and a magnetic guide structure. When a user presses the keycap structure, the movement of the keycap structure changes the position of the magnet structure. Through the change of the relative position of the magnet structure and the magnetic guide structure, the magnetic pole direction of a part of the magnetic guide structure changes, thereby changing the magnetic field wound in the coil of the magnetic guide structure, and an induced electromotive force is generated in the coil. The corresponding electrical energy can be used as the energy for the key structure to transmit electromagnetic wave signals, so that the wireless keyboard no longer needs to use a disposable battery or a rechargeable battery for power supply, and does not need to be powered by a wired cable.

[0054] The key structure and the wireless keyboard including the key structure provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0055] As shown in FIGS. 1-11, the key structure 10 provided according to the embodiments of the present disclosure includes a key cap structure 11 and a power generation module 300. The key cap structure 11 includes a key cap 100 and an elastic component 200, which can be a spring for example. The power generation module 300 includes a deformation component 310, a magnet structure 320 and a magnetic guide structure 350. The key cap 100 includes a top structure 1001 and a bottom structure 1002, the top structure 1001 being used for accepting user pressing. For example, the surface of the top structure 1001 away from the bottom structure 1002 can be square, rectangular or circular, and the surface of the bottom structure 1002 away from the top structure 1001 can also be square, rectangular or circular. For example, the area of the surface of the top structure 1001 away from the bottom structure 1002 can be smaller than the area of the surface of the bottom structure 1002 away from the top structure 1001.

[0056] As shown in FIGS. 1-11, the deformation component 310 can be connected with the bottom structure 1002 through the elastic component 200. For example, one end of the elastic component 200 can be fixed to the surface of the bottom structure 1002 away from the top structure 1001, and the other end of the elastic component 200 can be fixed to the surface of the deformation component 310 close to the key cap 100.

[0057] As shown in FIGS. 1-11, the magnet structure 320 includes a first magnetic guide sheet 321, a second magnetic guide sheet 323 and a magnet 322, the first magnetic guide sheet 321 being connected with the deformation component 310, the magnet 322 being located between the first magnetic guide sheet 321 and the second magnetic guide sheet 323, and the magnet 322 being in contact with the first magnetic guide sheet 321 and the second magnetic guide sheet 323 respectively. For example, the magnet 322 can be a permanent magnet.

[0058] As shown in FIGS. 1-11, the magnetic guide structure 350 includes a first portion 351, a connecting portion 355 and a second portion 352 connected in sequence, the first portion 351 and the second portion 352 being located on the same side of the connecting portion 355, and the shape of the magnetic guide structure 350 can be substantially "F" shape. A coil 360 is wound on the first portion 351, and the end of the first portion 351 towards the magnet structure 320 is located between the second end of the first magnetic guide sheet 321 and the second magnetic guide sheet 323.

[0059] For example, the first magnetic guide sheet 321 can be selected from silicon steel sheets, the second magnetic guide sheet 323 can be selected from silicon steel sheets, the first portion 351 of the magnetic guide structure 350 can be selected from silicon steel sheets, the second portion 352 can be selected from silicon steel sheets, and the connecting portion 355 can be selected from silicon steel sheets.

[0060] As shown in FIGS. 1-11, when the keycap structure 11 is pressed and moves towards the deformation component 310, the key structure 10 changes from a first state to a second state, in the first state, the second magnetic conducting sheet 323 contacts the end of the first portion 351 of the magnetic conducting structure 350 facing the magnet structure 320, in the second state, the first magnetic conducting sheet 321 contacts the end of the first portion of the magnetic conducting structure 350 facing the magnet structure 320, so that an induced electromotive force is generated in the coil 360.

[0061] For example, when the top structure 1001 is pressed by a user, the pressing force acting on the top structure 1001 is transmitted to the deformation component 310 through the elastic component 200, and then transmitted to the magnet structure 320 through the deformation component 310, and the magnet structure 320 moves in the pressing direction, during the whole movement, the contact mode of the end of the first portion 351 of the magnetic conducting structure 350 facing the magnet structure

[0062] For example, the magnetic properties of the face of the magnet 322 contacting the first magnetic conducting sheet 321 and the face of the magnet 322 contacting the second magnetic conducting sheet 323 are opposite, and the magnetic field generated by the magnet 322 can be transmitted to the first portion 351 of the magnetic conducting structure 350 through the first magnetic conducting sheet 321 or the second magnetic conducting sheet 323. During the process of the top structure 1001 being pressed from not being pressed to being pressed completely, the magnetic properties of the first portion 351 are switched because the first portion 351 is switched from contacting the second magnetic conducting sheet 323 to contacting the first magnetic conducting sheet 321, and this process can be considered as instantaneous. When the user stops pressing the top structure 1001, the keycap 100 returns to the original state (i.e. the position when the keycap 100 is not pressed), and when the keycap 100 returns to the original state, the magnetic properties of the first portion 351 are switched again, and this process is also very fast and can be considered as instantaneous. In other words, during the whole process of the keycap 100 being pressed once, the magnetic properties of the first portion 351 are switched twice.

[0063] For example, the magnetic field direction in the coil 360 changes before and after each magnetic pole reversal, and according to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the coil 360. The coil 360 can generate a first induced electromotive force during the process in which the keycap 100 is pressed from not being pressed to being pressed, and can generate a second induced electromotive force during the process in which the user removes the pressing to restore the keycap 100 to the original state, and the polarities of the first and second induced electromotive forces are opposite.

[0064] The key structure provided by the present disclosure includes two stable states, i.e., a first state and a second state. The first part of the magnetic conduction structure undergoes a magnetic pole reversal when the key structure is switched from the first state to the second state, and the first part of the magnetic conduction structure also undergoes a magnetic pole reversal when the key structure is switched from the second state to the first state, and an induced electromotive force is generated in the coil through the magnetic pole reversal. When the keycap structure is pressed, the mechanical system inside the key structure converts between the "energy potential wells" corresponding to the two stable states, and the kinetic energy of the magnet structure obtained each time from the potential barrier to the potential well is related to the energy difference between the potential barrier point and the potential well point, which is related to the key structure and has therefore been uniquely determined. Thus, regardless of the strength of the user's pressing, as long as the magnetic pole reversal occurs, the kinetic energy obtained by the magnet structure has a minimum value, which can ensure that each key action can be converted into stable electrical energy, so that when the key structure is used in a wireless keyboard, it can provide stable electrical energy for the wireless keyboard, so that the wireless keyboard no longer needs an additional battery to power it. Specifically, in the first state, the second magnetic conduction sheet contacts the end of the first part of the magnetic conduction structure facing the magnet structure, forming a relatively stable energy configuration. Similarly, in the second state, the first magnetic conduction sheet contacts the end of the first part of the magnetic conduction structure facing the magnetic structure, also forming a relatively stable energy configuration. These two states are like two "energy potential wells", and the system needs to overcome a certain energy barrier (i.e., the potential barrier) when converting between the two states. When the keycap structure is pressed, the mechanical system inside the key structure converts between the two "energy potential wells" corresponding to the two stable states. This conversion process involves changes in the kinetic energy of the magnet structure and the induced electromotive force generated in the coil due to the magnetic pole reversal. Since the energy difference between the two stable states is determined, regardless of the strength of the user's pressing, as long as the magnetic pole reversal occurs,

[0065] The key structure provided by the present disclosure adopts a mechanism of mechanical potential energy pre-storage to ensure minimum energy output and assessable electric energy collection. Specifically, the key structure switches between two stable states of a first state and a second state. When a user presses the keycap 100, the mechanical system inside the key structure will convert between the two stable states corresponding to "energy potential wells". There is a highest point of potential energy between the two potential wells, i.e. a potential barrier. When the user presses the keyboard, the elastic component 200 inside the key structure is gradually compressed, accumulating mechanical energy, causing the system to move in the direction of the potential barrier from one potential well. This process is equivalent to charging the system until it reaches the potential barrier.

[0066] Once the mechanical energy of the key structure reaches or exceeds the height of the potential barrier, the mechanical energy stored in the elastic component 200 is rapidly released, and the key structure slides down from the potential barrier and jumps into another potential well. This rapid energy release process is converted into the kinetic energy of the magnet structure 320, causing the magnetic flux inside the first part 351 of the magnetic conducting structure 350 to change sharply. According to the principle of electromagnetic induction, this change in magnetic flux induces an electromotive force in the matching coil 360, thereby generating electric energy. The kinetic energy of the magnet structure 320 obtained from the conversion from the potential barrier to the potential well each time is related to the energy difference between the potential barrier point and the potential well point, which is related to the system structure and has therefore been uniquely determined. Thus, regardless of the strength of the user's press, as long as the magnetic pole flips, the kinetic energy obtained by the magnet structure 320 will have a minimum value. The above is the potential energy pre-storage mechanism, which ensures that each key action can be converted into stable electric energy.

[0067] In addition, the key structure provided by the present disclosure adopts a magnetic pole flipping power generation mode to maximize the electromechanical energy conversion efficiency. Specifically, during the pressing of the keycap 100, the downward force of the user is transmitted to the magnet structure 320 through the elastic component 200. At this time, the elastic component 200 is compressed and stores elastic potential energy. As the pressing force increases, the compression of the elastic component 200 deepens, and the total mechanical energy of the key structure gradually increases. When the accumulated mechanical energy is sufficient to overcome the magnetic attraction between the magnet structure 320 and the magnetic conductive structure 350, the key structure will reach the highest point of the potential barrier. Once the mechanical energy of the key structure reaches or exceeds the height of the potential barrier (at this time, the force exerted by the elastic component 200 on the magnet structure 320 is equal to the magnetic force between the magnet structure 320 and the magnetic conductive structure 350), the mechanical energy stored in the elastic component 200 will be rapidly released. At this time, the magnet structure 320 moves downward rapidly due to inertia and the force of the elastic component 200, causing a sharp change in the magnetic flux inside the first portion 351 of the magnetic conductive structure 350 (for example, the magnet 322 is N-pole on one side of the first magnetic conductive sheet 321 and S-pole on one side of the second magnetic conductive sheet 323. In the first state, the magnetic flux in the first portion 351 of the magnetic conductive structure 350 corresponds to the S-pole; in the second state, the magnetic flux in the first portion 351 of the magnetic conductive structure 350 corresponds to the N-pole. Due to the extremely fast switching speed, the change in the direction of the magnetic flux in the first portion 351 of the magnetic conductive structure 350 is almost instantaneous). According to Faraday's law of electromagnetic induction, this rapid change in magnetic flux induces an electromotive force in the matching coil 360, thereby generating electrical energy. This process is the magnetic pole flipping power generation, which ensures that each key action can be efficiently converted into electrical energy. Similarly, when the keycap 100 is not pressed, the magnet structure 320 returns to the initial position (i.e., the first state), completing the reset of the system, and this process also involves the flipping of the magnetic poles again, thereby generating electricity again.

[0068] In a specific embodiment, as shown in FIGS. 1-11, the magnet 322 is in contact with the first portion 3211 of the first magnetic conductive sheet 321 and the first portion 3231 of the second magnetic conductive sheet 323, respectively. The portion of the first portion 351 of the magnetic conductive structure 350 facing the magnet structure 320 is located between the second portion 3212 of the first magnetic conductive sheet 321 and the second portion 3232 of the second magnetic conductive sheet 323, and the portion of the first portion 351 of the magnetic conductive structure 350 away from the magnet structure 320 is wound with the coil 360.

[0069] Exemplarily, the first magnetic conductive sheet 321 has the same or similar shape and size as the second magnetic conductive sheet 323, the magnet 322 has a size smaller than the first magnetic conductive sheet 321, and the magnet 322 has a size smaller than the second magnetic conductive sheet 323. In the pressing direction, the projection of the first magnetic conductive sheet 321 can overlap the projection of the second magnetic conductive sheet 323. In the movement direction of the keycap 100 after being pressed by the user, the projection of the first magnetic conductive sheet 321 has an overlapping area with the projection of the magnet 322, and the projection of the second magnetic conductive sheet 323 has an overlapping area with the projection of the magnet 322. The first portion 3211 of the first magnetic conductive sheet 321 refers to the end of the first magnetic conductive sheet 321 away from the elastic component 200, and in the movement direction of the keycap 100 after being pressed by the user, the projection of the first magnetic conductive sheet 321 has an overlapping area with the projection of the magnet 322. The first portion 3231 of the second magnetic conductive sheet 323 refers to the end of the second magnetic conductive sheet 323 away from the elastic component 200, and in the movement direction of the keycap 100 after being pressed by the user, the projection of the second magnetic conductive sheet 323 has an overlapping area with the projection of the magnet 322.

[0070] Exemplarily, the second portion 3212 of the first magnetic conductive sheet 321 refers to the end of the first magnetic conductive sheet 321 close to the elastic component 200, and in the movement direction of the keycap 100 after being pressed by the user, the projection of the first magnetic conductive sheet 321 does not have an overlapping area with the projection of the magnet 322. The second portion 3232 of the second magnetic conductive sheet 323 refers to the end of the second magnetic conductive sheet 323 close to the elastic component 200, and in the movement direction of the keycap 100 after being pressed by the user, the projection of the second magnetic conductive sheet 323 does not have an overlapping area with the projection of the magnet 322.

[0071] Exemplarily, the first portion 351 includes two ends, one end 3512 is away from the magnet structure 320, and the other end 3511 is towards the magnet structure 320, and the end 3512 of the first portion 351 away from the magnet structure 320 is wound with the coil 360. The end 3511 of the first portion 351 towards the magnet structure 320 is located between the second portion 3212 of the first magnetic conductive sheet 321 and the second portion 3232 of the second magnetic conductive sheet 323.

[0072] In one specific embodiment, as shown in FIGS. 1-11, the deforming component 310 includes a first portion 313 and a second portion 311, and the first portion 313 of the deforming component 310 is in contact with the first magnetic conductive sheet 321. In the pressing direction, the first portion 313 of the deforming component 310 protrudes from the second portion 311 of the deforming component 310. In other words, in the pressing direction, the height of the first portion 313 of the deforming component 310 is greater than the height of the second portion 311 of the deforming component 310.

[0073] Exemplarily, the deformation component 310 can adopt an insulating material allowing bending. The first portion 313 of the deformation component 310 has a higher height, and can be in good contact with the magnet structure 320 below the deformation component 310. The second portion 311 of the deformation component 310 has a smaller height, and can be deformed well when receiving the pressing force, thereby being able to well transmit the pressing force to the magnet structure 320, so that the magnet structure 320 moves quickly along the pressing direction. In addition, the second portion 311 and the first portion 313 can form an L-shaped accommodation space, which can accommodate part of the coil 360. The coil 360 can be exposed through the accommodation space, so as to be connected with the energy collection and signal transmission circuit by a wire in the subsequent process, thereby being able to collect the electric energy generated by the induced electromotive force of the coil 360.

[0074] In a specific embodiment, as shown in FIGS. 1-11, the key structure further includes a first clamping rod 314 fixed on the deformation component 310, and the first clamping rod 314 is tightly connected with the elastic component 200. The shape of the first clamping rod 314 can be, for example, a cylindrical shape.

[0075] Exemplarily, the first clamping rod 314 can be fixed on the upper surface of the deformation component 310 by welding. The first clamping rod 314 can be a solid cylinder or a hollow cylinder, and the elastic component 200 can be a spring. The spring can be sleeved on the outer periphery of the first clamping rod 314, and the first clamping rod 314 can clamp the spring to achieve the tight connection of the spring and the first clamping rod 314. When the first clamping rod 314 is a hollow cylinder, the spring can also be clamped inside the first clamping rod 314 to achieve the tight connection of the spring and the first clamping rod 314.

[0076] Exemplarily, the height of the first clamping rod 314 needs to be limited along the pressing direction. If the height of the first clamping rod 314 is set too large, the elastic component 200 cannot be deformed sufficiently under the action of the pressing force, the keycap 100 can move a small distance along the pressing direction, and the first magnetic guide sheet 321 can not be moved to the position in contact with the first portion 351 of the magnetic guide structure 350, the first portion 351 cannot realize the magnetic pole inversion, and thus the induced electromotive force cannot be generated well in the coil 360. If the height of the first clamping rod 314 is set too small, the first clamping rod 314 cannot be clamped with the elastic component 200 well. For example, in the present disclosure, the height of the first clamping rod 314 along the pressing direction only needs to meet the condition that the first magnetic guide sheet 321 can be in contact with the first portion 351 when the magnet structure 320 moves along the pressing direction. Further, the height of the first clamping rod 314 along the pressing direction can be set as large as possible on the basis of meeting the condition that the first magnetic guide sheet 321 can be in contact with the first portion 35l.

[0077] In an embodiment, as shown in FIGS. 1-11, the key structure includes a first fastener 324, and a support structure 330 fastened with the magnet structure 320, the support structure 330 being clamped between the first magnetic conducting sheet 321 and the second magnetic conducting sheet 323. The first portion of the first magnetic conducting sheet 321 has a first protruding structure 3213 protruding from the magnet 322, and the first portion of the second magnetic conducting sheet 323 has a second protruding structure 3233 protruding from the magnet 322. In other words, no magnet 322 is arranged at the position directly below the first protruding structure 3213, and no magnet 322 is arranged at the position directly above the second protruding structure 3233.

[0078] In an embodiment, the first protruding structure 3213 is provided with a first opening (at the corresponding position of the first fastener 324), and the second protruding structure 3233 is provided with a second opening (at the corresponding position of the first fastener 324), and the first fastener 324 passes through the first opening and the second opening to fasten the support structure 330 with the magnet structure 320. For example, the second opening can be located directly below the first opening.

[0079] For example, the first fastener 324 can be a rivet, which passes through the first opening, the space between the first magnetic conducting sheet 321 and the second magnetic conducting sheet 323, and the second opening in sequence, so that the first magnetic conducting sheet 321 and the second magnetic conducting sheet 323 can clamp the support structure 330. The arrangement of the first protruding structure and the second protruding structure makes it possible to fasten the first magnetic conducting sheet 321 and the second magnetic conducting sheet 323 without passing through the magnet 322, thereby reducing the processing difficulty.

[0080] For example, the number of the first openings can be two, and the number of the second openings can also be two. For example, the first openings can be circular holes, and the second openings can also be circular holes. For example, the size of the first openings can be equal to the size of the second openings.

[0081] In an embodiment, as shown in FIG. 1, the support structure 330 can include a first support 3301, a second support 3302, and a third support 3303 connected in sequence, and the first support 3301 and the third support 3303 are located on the same side of the second support 3302, i.e., the support structure 330 is in a U shape.

[0082] In an embodiment, as shown in FIG. 1, the number of the first fasteners 324 is two, and the portion of the first support 3301 close to the second support 3302 is provided with a clamping groove 331 matched with one of the first fasteners 324, and the portion of the third support 3303 close to the second support 3302 is provided with a clamping groove 331 matched with the other first fastener 324. The clamping grooves 331 can limit the movement of the first fasteners 324, and further ensure the fastening connection between the support structure 330 and the magnet structure 320.

[0083] In an embodiment, as shown in FIG. 1 to FIG. 11, the key structure further comprises two elastic members 333, one of which is fixed to the portion of the first support 3301 close to the second support 3302, and the other of which is fixed to the portion of the third support 3303 close to the second support 3302. Exemplarily, the elastic members 333 can be springs, and the two elastic members 333 can be springs with the same deformation characteristic parameters. The two elastic members 333 can be symmetrically arranged about the vertical bisector of the second support 3302.

[0084] Exemplarily, since the magnet structure 320 is fastened to the support structure 330, the movement of the magnet structure 320 will drive the movement of the support structure 330, and the movement of the support structure 330 will also drive the movement of the magnet structure 320. In the case that the keycap 100 is not pressed by the user, the elastic members 333 are in a natural elongation state, and in the case that the keycap 100 is pressed by the user, the elastic members 333 are compressed along with the movement of the magnet structure 320 in the pressing direction. In the case that the user no longer presses the keycap 100, the elastic members 333 will return to the natural elongation state, and in this process, the elastic members 333 will provide an opposite force to the magnet structure 320 in the pressing direction, so that the magnet structure 320 moves in the opposite direction of the pressing direction.

[0085] In an embodiment, as shown in FIG. 1 to FIG. 11, the key structure further comprises two second clamping grooves 332, one of which is fixed to the portion of the first support 3301 close to the second support 3302 and fastened to one of the elastic members 333, and the other of which is fixed to the portion of the third support 3303 close to the second support 3302 and fastened to the other elastic member 333. Exemplarily, the two second clamping grooves 332 can be symmetrically arranged about the vertical bisector of the second support 3302.

[0086] Exemplarily, one of the second clamping bars 332 can be fixed on the surface of the first support 3301 away from the keycap 100 by welding, and the other second clamping bar 332 can be fixed on the surface of the third support 3303 away from the keycap 100 by welding. Both of the second clamping bars 332 can be solid cylinders, or can be hollow cylinders, or one of the second clamping bars 332 can be a solid cylinder and the other second clamping bar 332 can be a hollow cylinder.

[0087] Exemplarily, the elastic member 333 can be sleeved on the outer periphery of the second clamping bar 332, and the second clamping bar 332 can clamp the elastic member 333 to achieve the fastening connection of the elastic member 333 and the second clamping bar 332. When the second clamping bar 332 is a hollow cylinder, the elastic member 333 can also be clamped inside the second clamping bar 332 to achieve the fastening connection of the elastic member 333 and the second clamping bar 332.

[0088] Exemplarily, the height of the second clamping bar 332 needs to be limited in the pressing direction, for example, in the disclosure, the height of the second clamping bar 332 in the pressing direction needs to meet that the first magnetic conduction sheet 321 can contact the first part 351 of the magnetic conduction structure 350 when the elastic member 333 is in the compressed state. In addition, under the condition that the first magnetic conduction sheet 321 contacts the first part 351, the height value of the second clamping bar 332 in the pressing direction can be set as large as possible.

[0089] In one specific embodiment, as shown in FIGS. 1-11, the key structure includes the second fastener 315 and the base 340, the base 340 includes a base bottom surface 346 and a first base protruding structure 3461, in the first direction, the first base protruding structure 3461 is located at one end of the base bottom surface 346, and the first base protruding structure 3461 protrudes from the base bottom surface 346 in the direction towards the keycap 100. The first base protruding structure 3461 is provided with a first connecting hole 345, and the second part 311 of the deformation component 310 is provided with a second connecting hole 312 away from the first part 313 of the deformation component 310. The position of the first connecting hole 345 corresponds to the position of the second connecting hole 312, and the second fastener 315 can pass through the first connecting hole 345 and the second connecting hole 312 to fasten the deformation component 310 and the base 340.

[0090] Exemplarily, both the first connecting hole 345 and the second connecting hole 312 can be circular holes, the diameters of the first connecting hole 345 and the second connecting hole 312 can be equal, and the second fastener 315 can be a rivet. The first connecting hole 345 can be a blind hole that does not penetrate the first base protruding structure, the second connecting hole 312 can be a through hole that penetrates the deformation component 310, and in addition, the first connecting hole 345 can also be a through hole.

[0091] In an embodiment, as shown in FIGS. 1-11, the first base protruding structure 3461 is provided with two third clamping rods 341 on opposite sides in the second direction, the support structure 330 includes a first support 3301 provided with a third connecting hole 334 at an end away from the second support 3302, and a third support 3303 provided with another third connecting hole 334 at an end away from the second support 3302. One of the third connecting holes 334 is rotatably connected with one of the third clamping rods 341, and the other third connecting hole 334 is rotatably connected with the other third clamping rod 341.

[0092] For example, the third clamping rod 341 can be in a cylindrical shape, and the two third connecting holes 334 of the support structure 330 are clamped on the two third clamping rods 341 respectively, so that the magnet structure 320 can only move circumferentially around the third clamping rod 341.

[0093] In an embodiment, as shown in FIGS. 1-11, the base 340 includes a tail structure 344 and a clamping tongue structure 343, in the first direction, the clamping tongue structure 343 is located at the other end of the base bottom surface 346, and the tail structure 344 is located on the first base protruding structure 3461, and the clamping tongue structure 343 and the tail structure 344 are oppositely arranged. The second part 352 of the magnetic conductive structure 350 is clamped with the clamping tongue structure 343 away from the end surface 354 of the connecting structure 355, and the connecting structure 355 is clamped with the tail structure 344, so that the magnetic conductive structure 350 is clamped between the clamping tongue structure 343 and the tail structure 344.

[0094] For example, in the pressing direction, the height of the clamping tongue structure 343 can be smaller than the height of the tail structure 344, and the rear edge surface of the connecting structure 355 away from the clamping tongue structure 343 can abut against the tail structure 344. The clamping tongue structure 343 and the tail structure 344 can better fix the magnetic conductive structure 350.

[0095] In an embodiment, as shown in FIGS. 1-11, the base 340 further includes a second base protruding structure 3462, in the second direction, the second base protruding structure 3462 is located at opposite ends of the base bottom surface 346 and protrudes from the base bottom surface 346 towards the keycap 100. The second base protruding structure 3462 is provided with a clamping block 342, and the second part 352 of the magnetic conductive structure 350 is provided with an arm matched with the clamping block 342, and the arm is clamped with the clamping block 342.

[0096] Exemplarily, the base 340 can include two second base protruding structures 3462, the height of the second base protruding structures 3462 can be smaller than the height of the first base protruding structure 3461 along the pressing direction. The inner surface of one of the second base protruding structures 3462 (i.e. the surface of the second base protruding structure 3462 close to the tongue structure 343) is provided with two clamping blocks 342, and the inner surface of the other second base protruding structure 3462 is also provided with two clamping blocks 342. Correspondingly, the second part 352 can be provided with four arms adapted to the four clamping blocks 342, and the four arms of the second part 352 are used to clamp the four clamping blocks 342. After the correct assembly of the magnetic conductive structure 350 and the base 340, the connecting part 355 included in the magnetic conductive structure 350 is clamped in front of the tail structure 344, and the end surface 354 of the second part 352 is clamped behind the tongue structure 343, so that the fastening connection of the magnetic conductive structure 350 and the base 340 can be realized.

[0097] In a specific embodiment, as shown in FIGS. 1-11, along the second direction, one of the elastic members 333 abuts against one end of the base bottom surface 346, and the other elastic member 333 abuts against the other end of the base bottom surface 346.

[0098] Exemplarily, one of the elastic members 333 can also be fixedly connected to one end of the base bottom surface 346, and the other elastic member 333 can also be fixedly connected to the other end of the base bottom surface 346.

[0099] The working process of the key structure in the present disclosure will be described in detail below in combination with FIGS. 1-11.

[0100] When the magnet structure 320, the support structure 330, the base 340 and the magnetic conductive structure 350 are correctly assembled, the first part 351 of the magnetic conductive structure 350 should always be located between the first magnetic conductive sheet 321 and the second magnetic conductive sheet 323. The connection of the third clamping rod 341 provided by the base 340 and the third connecting hole 334 included in the support structure 330 limits the movement of the magnet structure 320, and the second magnetic conductive sheet 323 can be approximated as being able to move vertically only between the first part 351 of the magnetic conductive structure 350 and the second part 352 of the magnetic conductive structure 350.

[0101] When the magnet structure 320, the support structure 330, the base 340 and the magnetic conductive structure 350 are correctly assembled, the elastic member 333 will push the support structure 330 and the magnet structure 320 upward, and at this time the first part 351 is in contact with the second magnetic conductive sheet 323.

[0102] When the user presses the keycap 100 in the pressing direction, the elastic component 200 is compressed and exerts a downward force on the deformation component 310. When the deformation component 310 is subjected to the downward force, the second part 311 of the deformation component 310 is bent, so that the first part 313 of the deformation component 310 transmits the force downward to the first magnetic guide sheet 321. When the downward force is large enough to resist the upward supporting force of the elastic component 333 and the magnetic force between the second magnetic guide sheet 323 and the first part 351, the second magnetic guide sheet 323 is separated from the first part 351. The magnet structure 320 is affected by inertia and the energy stored in the elastic component 200, and the magnet structure 320 moves downward rapidly until the first magnetic guide sheet 321 and the first part 351 are in contact. During this process, the first part 351 undergoes a magnetic pole reversal. The switching process can be considered to occur instantaneously. Since the magnetic field direction in the coil 360 before and after the magnetic pole reversal changes, a first induced electromotive force is generated in the coil 360 during this process.

[0103] It should be noted that when the first magnetic guide sheet 321 and the first part 351 are in contact, the second magnetic guide sheet 323 can also be in contact with the second part 352, and the same effect as the present disclosure can be achieved at this time. In addition, the second magnetic guide sheet 323 can also be in a state of suspension without being in contact with the second part 352, and the same effect as the present disclosure can be achieved at this time.

[0104] When the user no longer presses the keycap 100, the elastic component 333 pushes the magnet structure 320 upward, so that the second magnetic guide sheet 323 is in contact with the first part 351. This process also occurs very quickly and can be considered to occur instantaneously. During this process, the first part 351 undergoes a magnetic pole reversal again. Since the magnetic field direction in the coil 360 before and after the magnetic pole reversal changes again, a second induced electromotive force is generated in the coil 360 during this process. The polarity of the first induced electromotive force is opposite to the polarity of the second induced electromotive force.

[0105] The coil 360 in the present disclosure can be connected to an energy collection and signal transmission circuit through a wire. The energy collection and signal transmission circuit can collect the electric energy of the first induced electromotive force and the second induced electromotive force, and send electromagnetic wave signals according to the electric energy of the first induced electromotive force and the second induced electromotive force. The electromagnetic wave signals can be processed by a computer host to form corresponding key information, and the key information can be displayed on the screen of the computer host.

[0106] The wireless keyboard provided by the present disclosure comprises the key structure disclosed above, and thus has the same advantages as the key structure, which will not be repeated here.

[0107] The wireless keyboard provided by the present disclosure comprises the key structure disclosed above, and thus has the same advantages as the key structure, which will not be repeated here.

[0108] In one specific embodiment, as shown in FIG. 16, the energy collection and signal transmission circuit 400 comprises a voltage signal conversion circuit 403, an energy storage capacitor 404, a voltage stabilizing circuit 405, a microprocessor 406, a radio frequency circuit and an antenna 407. The voltage signal conversion circuit 403 is configured to receive the electric energy generated by the coil 360 and convert the received electric energy into direct current voltage. The energy storage capacitor 404 is coupled to the voltage signal conversion circuit 403 and is configured to store the direct current voltage. The voltage stabilizing circuit 405 is coupled to the energy storage capacitor 404 and the microprocessor 406, and is configured to convert the direct current voltage into voltage for the microprocessor 406 to work. The microprocessor 406 is coupled to the radio frequency circuit and the antenna 407, and the radio frequency circuit and the antenna 407 are configured to send electromagnetic wave signals under the control of the microprocessor 406.

[0109] In one specific embodiment, as shown in FIG. 13 and FIG. 14, the wireless keyboard comprises a keyboard base 510, and the keyboard base 510 comprises a plurality of base slots 511 arranged in an array. The plurality of key structures 10 are arranged one-to-one with the plurality of base slots 511, and the key structure 10 is fastened to the corresponding base slot 511. For example, the key structure 10 and the corresponding base slot 511 can be fastened by glue or double-sided tape.

[0110] For example, the key structure 10 in the present disclosure can be arranged and spliced, and installed in the keyboard base 510 in a suitable manner, to form a wireless keyboard similar in appearance to products on the market.

[0111] It should be noted that the placement of the energy collection and signal transmission circuit 400 and the assembly and connection method with the key structure 10 are not strictly required, but should meet the following requirements: the placement and assembly of the energy collection and signal transmission circuit 400 should not affect the normal pressing of the keycap 100 as described above. The placement and assembly of the energy collection and signal transmission circuit 400 should be stable and ensure the stability of the connection with the key structure 10 under normal use conditions and methods. In addition, the two ends of the coil 360 included in the key structure 10 should be connectable to the energy collection and signal transmission circuit 400 through the wires 402. The wires 402 may, for example, be copper enameled wires.

[0112] In a specific embodiment, as shown in FIGS. 15 and 16, the energy collection and signal transmission circuit 400 can be carried on a circuit board 401 (which may, for example, be a hard printed circuit board), and the size of the circuit board 401 can be the same as that of the base bottom surface 346 of the base 340. The energy collection and signal transmission circuit 400 can be fixedly connected with the base bottom surface 346 of the base 340 included in the key structure 10. For example, the circuit board 401 can be fixedly connected with the base bottom surface 346 by double-sided tape. The two wires 402 can respectively connect the two ends of the coil 360 to designated positions of the circuit board 401.

[0113] For example, after the induced electromotive force is generated in the coil 360, it is transmitted to the voltage signal conversion circuit 403 through the wires 402. Since the coil 360 generates an induced electromotive force of opposite polarity, the voltage signal conversion circuit 403 is required to convert the induced electromotive force of opposite polarity into a voltage signal of the same polarity and suitable amplitude and frequency. The voltage signal converted by the voltage signal conversion circuit 403 is stored in the energy storage capacitor 404 in the form of a direct current voltage. The voltage stabilizing circuit 405 converts the voltage across the energy storage capacitor 404 into a voltage that can be used by the microprocessor 406, and uses the electrical energy in the energy storage capacitor 404 to power the microprocessor 406. After the microprocessor 406 is powered on and starts to work, it processes the information preset in the processor, and turns on the radio frequency circuit and the antenna 407 to send electromagnetic wave signals in the form of Bluetooth broadcast.

[0114] As shown in FIG. 17, the specific flow of the communication method between the computer host and the wireless keyboard according to the present disclosure can include: after the computer program is initialized, the built-in Bluetooth hardware or the external Bluetooth hardware of the computer is called to scan the current broadcast packet conforming to the Bluetooth protocol; if the Bluetooth broadcast packet received this time contains the preset MAC address or other characteristic value, the broadcast packet will be regarded as the key information sent by the wireless keyboard, then the key information contained in the broadcast packet is analyzed, and the corresponding character of the key is printed on the specified position of the screen, and then the above scanning behavior is repeated; if the broadcast packet does not contain the preset characteristic value, it is regarded as an invalid Bluetooth broadcast packet, and then the above scanning behavior is repeated.

[0115] The present disclosure also provides a forming method of a key structure, the key structure 10 comprising a keycap structure 11 comprising an elastic component 200, and a power generation module 300, the power generation module 300 comprising a deformation component 310, a magnet structure 320 comprising a first magnetic guide sheet 321, a second magnetic guide sheet 323 and a magnet 322, and a magnetic guide structure 350, and a coil 360 wound on a first part 351 of the magnetic guide structure 350.

[0116] As shown in FIG. 18, the forming method of the key structure provided by the present disclosure comprises:

[0117] S101, connecting the deformation component 310 with the elastic component 200.

[0118] S102, connecting the first magnetic guide sheet 321 with the deformation component 310, and locating the magnet 322 between the first magnetic guide sheet 321 and the second magnetic guide sheet 323.

[0119] S103, disposing the first part 351 between the first magnetic guide sheet 321 and the second magnetic guide sheet 323 towards the end of the magnet structure 320.

[0120] When the keycap structure 11 is pressed and moves towards the deformation component 310, the key structure 10 changes from a first state to a second state, in the first state, the second magnetic guide sheet 323 contacts the end of the first part 351 of the magnetic guide structure 350 towards the magnet structure 320, and in the second state, the first magnetic guide sheet 321 contacts the end of the first part 351 of the magnetic guide structure 350 towards the magnet

[0121] When the key structure switches from the first state to the second state, the first part of the magnetic conduction structure undergoes a magnetic pole reversal, and when the key structure switches from the second state to the first state, the first part of the magnetic conduction structure also undergoes a magnetic pole reversal, and an induced electromotive force is generated in the coil through the magnetic pole reversal. When the keycap structure is pressed down, since the first state and the second state are two stable states, the mechanical system inside the key structure will convert between the "energy potential well" corresponding to the two stable states, and the kinetic energy of the magnet structure obtained each time from the conversion from the potential barrier to the potential well is related to the energy difference between the potential barrier point and the potential well point, which is related to the key structure and thus has been uniquely determined. Therefore, regardless of the strength of the user's pressing, as long as the magnetic pole reversal occurs, the kinetic energy obtained by the magnet structure has a minimum value, which can ensure that each key action can be converted into stable electric energy, so that when the key structure is used in a wireless keyboard, it can provide stable electric energy for the wireless keyboard, so that the wireless keyboard no longer needs an additional battery to power it.

[0122] In an embodiment, the method of forming the key structure 10 further includes: contacting the magnets 322 with the first part 3211 of the first magnetic conduction sheet 321 and the first part 3231 of the second magnetic conduction sheet 323, respectively. The magnetic conduction structure 350 includes a first part 351, a portion of which towards the magnet structure 320 is located between the second part 3212 of the first magnetic conduction sheet 321 and the second part 3232 of the second magnetic conduction sheet 323, and a portion of which away from the magnet structure 320 is wound with the coil 360.

[0123] In an embodiment, a first opening is formed at the first protruding structure of the first magnetic conduction sheet 321, and a second opening is formed at the second protruding structure of the second magnetic conduction sheet 323. The method of forming the key structure 10 further includes: providing a support structure 330 between the first magnetic conduction sheet 321 and the second magnetic conduction sheet 323, and passing the first fastener 324 through the first opening and the second opening to fasten the support structure 330 and the magnet structure 320. Exemplarily, the first fastener 324 can be a rivet.

[0124] In an embodiment, the power generation module 300 further includes a second fastener 315 and a base 340, the base 340 including a base bottom surface 346 and a first base protruding structure 3461, and a first connecting hole 345 is formed at a position of the first base protruding structure 3461 towards the shape-changing component 310, and a second connecting hole 312 is formed at a side of the second part 311 of the shape-changing component 310 away from the first part 313 of the shape-changing component 310. The method of forming the key structure 10 further includes: passing the second fastener 315 through the first connecting hole 345 and the second connecting hole 312 to connect the shape-changing component 310 and the base 340. Exemplarily, the second fastener 315 can be a rivet.

[0125] In one specific embodiment, the base 340 comprises a tail structure 344 and a latch structure 343, and the magnetic conducting structure 350 further comprises a second portion 352 and a connecting portion 355. The method for forming the key structure 10 further comprises: engaging the second portion 352 of the magnetic conducting structure 350 away from the end face of the connecting portion 355 with the latch structure 343, and engaging the connecting portion 355 with the tail structure 344, so that the magnetic conducting structure 350 is clamped between the latch structure 343 and the tail structure 344.

[0126] It should be understood that the above-mentioned process steps can be reordered, or some additional steps can be added or some of the steps already discussed can be deleted, according to the teachings of the embodiments of the present disclosure and according to actual needs. In addition, according to actual conditions, each step described in the present disclosure can be executed in parallel or sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

[0127] The above specific embodiments do not constitute a limitation on the protection scope of the present disclosure. According to design requirements and other factors, various forms of modifications can be made to the above-mentioned embodiments, including mutual or alternative between features. Any modification within the scope of the teachings of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A button structure, comprising: Keycap structure, including elastic components; The power generation module includes: A deformable component, connected to the elastic component; A magnet structure includes a first magnetic conductive sheet, a second magnetic conductive sheet, and a magnet, wherein the first magnetic conductive sheet is connected to the deformable component, and the magnet is located between the first magnetic conductive sheet and the second magnetic conductive sheet; A magnetically conductive structure, wherein a coil is wound on a first portion of the magnetically conductive structure, and the end of the first portion facing the magnet structure is located between the first magnetically conductive sheet and the second magnetically conductive sheet; When the keycap structure is pressed and moves toward the deformable component, the key structure changes from a first state to a second state. In the first state, the second magnetic sheet contacts the end of the first part of the magnetic structure facing the magnet structure. In the second state, the first magnetic sheet contacts the end of the first part of the magnetic structure facing the magnet structure.

2. The button structure according to claim 1, wherein, In the first state, the second magnetic sheet contacts the end of the magnetic structure to form a first energy potential well. In the second state, the first magnetic sheet contacts the end of the magnetic structure to form a second energy potential well. During the process of the keycap structure being pressed and the first energy potential well and the second energy potential well being converted, the key structure obtains mechanical potential energy with a minimum value and the electrical energy converted therefrom.

3. The button structure according to claim 1, wherein, The magnets are in contact with the first portion of the first magnetic conductive sheet and the first portion of the second magnetic conductive sheet, respectively. The portion of the first part of the magnetic conductive structure facing the magnet structure is located between the second part of the first magnetic conductive sheet and the second part of the second magnetic conductive sheet, and the portion of the first part of the magnetic conductive structure away from the magnet structure is wound with a coil.

4. The button structure according to claim 3, wherein, Along the direction from the keycap to the deformable component, the first part of the deformable component contacts the first magnetic sheet, and the first part of the deformable component protrudes beyond the second part of the deformable component.

5. The button structure according to claim 1, wherein, The button structure also includes a first latch, which is fixed to the deformable component.

6. The button structure according to claim 1, wherein, The button structure includes a support structure connected to the magnet structure, and the support structure is clamped between the first magnetic sheet and the second magnetic sheet.

7. The button structure according to claim 6, wherein, The key structure includes an elastic element, which is fixed to the side of the support structure away from the keycap structure.

8. The button structure according to claim 6, wherein, The button structure includes a first fastener; The first portion of the first magnetic conductive sheet has a first protruding structure protruding from the magnet, and the first portion of the second magnetic conductive sheet has a second protruding structure protruding from the magnet; The first protruding structure is provided with a first opening, and the second protruding structure is provided with a second opening at a corresponding position. The first fastener passes through the first opening and the second opening so that the support structure is securely connected to the magnet structure.

9. The button structure according to claim 8, wherein, The support structure includes a first support member, a second support member, and a third support member connected in sequence, with the first support member and the third support member located on the same side of the second support member; There are two first fasteners. The portion of the first support near the second support is provided with a slot that mates with one of the first fasteners. The portion of the third support near the second support is provided with a slot that mates with the other first fastener.

10. The button structure according to claim 9, wherein, The button structure also includes two second latches; One of the second latches is fixed to the portion of the first support member near the second support member and is fastened to one of the elastic members; Another second button is fixed to the portion of the third support near the second support and is fastened to another elastic member.

11. The button structure according to claim 7, wherein, The button structure includes: The second fastener; and The base includes a base bottom surface and a first base protrusion structure. Along a first direction, the first base protrusion structure is located at one end of the base bottom surface and protrudes from the base bottom surface toward the keycap structure. The first base protrusion structure is provided with a first connection hole, and the second part of the deformable component is provided with a second connection hole on the side away from the first part of the deformable component; The positions of the first connecting hole and the second connecting hole correspond, and the second fastener passes through the first connecting hole and the second connecting hole to securely connect the deformable component and the base.

12. The button structure according to claim 11, wherein, Along the second direction, two third latches are provided on opposite sides of the first base protrusion structure, a third connecting hole is provided at the end of the first support member away from the second support member, and another third connecting hole is provided at the end of the third support member away from the second support member; One of the third connecting holes is rotatably connected to one of the third buttons, and the other third connecting hole is rotatably connected to the other third button.

13. The button structure according to claim 11, wherein, The base includes a tail structure and a latch structure, and the magnetic conductive structure also includes a second part and a connecting part; The first part of the magnetically conductive structure, the connecting part, and the second part of the magnetically conductive structure are connected in sequence, and the first part and the second part of the magnetically conductive structure are located on the same side of the connecting part; The tail structure is located on the first base protrusion structure along the first direction, and the latch structure is located at the other end of the bottom surface of the base. The second part of the magnetically conductive structure engages with the end face away from the connecting part and the latch structure, and the connecting part engages with the tail structure, so that the magnetically conductive structure is engaged between the latch structure and the tail structure.

14. The button structure according to claim 11, wherein, The base also includes a second base protrusion structure, wherein, along the second direction, the second base protrusion structure is located at opposite ends of the bottom surface of the base and protrudes from the bottom surface of the base toward the direction of the keycap structure; The second base protrusion is provided with a locking block, and the second magnetic structure is provided with an arm that cooperates with the locking block, and the arm engages with the locking block.

15. The button structure according to claim 11, wherein, Along the second direction, one of the elastic elements abuts against one end of the bottom surface of the base, and the other elastic element abuts against the other end of the bottom surface of the base.

16. A wireless keyboard, comprising: Energy harvesting circuit; as well as The button structure as described in any one of claims 1-15; The energy harvesting circuit is connected to the coil of the button structure to collect the electrical energy generated by the coil and send electromagnetic wave signals according to the electrical energy. The energy required to send the electromagnetic wave signal is less than the mechanical potential energy of the button structure and the minimum value of the convertible electrical energy.

17. The wireless keyboard according to claim 16, wherein, The energy harvesting circuit includes: A voltage signal conversion circuit is configured to receive electrical energy generated by the coil and convert the electrical energy into DC voltage; An energy storage capacitor, coupled to the voltage signal conversion circuit, is used to store the DC voltage; and A voltage regulator circuit, coupled to the energy storage capacitor, is used to convert the DC voltage into a voltage for the microprocessor to operate.

18. The wireless keyboard according to claim 17, wherein, The button structure also includes a base, and the base includes a base bottom surface; The energy harvesting circuit is integrated on a circuit board, which is connected to the bottom surface of the base.

19. The wireless keyboard according to claim 16, wherein, The wireless keyboard includes a keyboard base, and the keyboard base includes a plurality of base slots arranged in an array. Each of the multiple button structures is configured to correspond one-to-one with a multiple of the base slots, and the button structures are securely connected to the corresponding base slots.

20. A method for forming a button structure, wherein, The key structure includes a keycap structure with an elastic component and a power generation module. The power generation module includes a deformation component, a magnet structure having a first magnetic sheet, a second magnetic sheet, and a magnet, and a magnetic conductive structure. A coil is wound on the first part of the magnetic conductive structure. The method includes: Connect the deformable component to the elastic component; Connect the first magnetically conductive sheet to the deformable component, and position the magnet between the first and second magnetically conductive sheets; and The end of the first portion facing the magnet structure is positioned between the first magnetic sheet and the second magnetic sheet; When the keycap structure is pressed and moves toward the deformable component, the key structure changes from a first state to a second state. In the first state, the second magnetic sheet contacts the end of the first part of the magnetic structure facing the magnet structure. In the second state, the first magnetic sheet contacts the end of the first part of the magnetic structure facing the magnet structure.

21. The forming method according to claim 20, wherein, The method further includes: The magnet is brought into contact with the first portion of the first magnetic conductive sheet and the first portion of the second magnetic conductive sheet, respectively. The magnetic conductive structure includes a first part, the portion of the first part facing the magnet structure is located between the second part of the first magnetic conductive sheet and the second part of the second magnetic conductive sheet, and the portion of the first part away from the magnet structure is wound with a coil.

22. The forming method according to claim 21, wherein, A first opening is provided at the first protruding structure of the first magnetic conductive sheet, and a second opening is provided at the second protruding structure of the second magnetic conductive sheet; The method further includes: A support structure is provided between the first magnetic conductive sheet and the second magnetic conductive sheet; A first fastener is used to pass through the first and second openings to securely connect the support structure to the magnet structure.

23. The forming method according to claim 20, wherein, The power generation module also includes a second fastener and a base. The base includes a base bottom surface and a first base protrusion structure, and a first connection hole is provided at the position of the first base protrusion structure facing the deformable component. A second connection hole is formed on the side of the second part of the deformable component away from the first part of the deformable component; The method further includes: The second fastener passes through the first connection hole and the second connection hole to connect the deformable component and the base.

24. The forming method according to claim 23, wherein, The base includes a tail structure and a latch structure, and the magnetic conductive structure also includes a second part and a connecting part. The method further includes: The end face of the second part of the magnetic conductive structure away from the connecting part is engaged with the latch structure, and the connecting part is engaged with the tail structure, so that the magnetic conductive structure is engaged between the latch structure and the tail structure.

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