A key with changeable key force and a mechanical keyboard

Abstract

The application discloses a key and a mechanical keyboard capable of changing key force, the key is a light guide type key, a first light blocking device is arranged between first and second light guide bodies, the upper part of the key is one of a right-angle trapezoidal body, a similar right-angle trapezoidal body, a right-angle triangular body and a similar right-angle triangular body, and the lower part of the key is a rectangular body; the light guide type key takes the key force number as a key conduction parameter; in the process that a user presses a handle of the key, the light quantity transmitted by the second light guide body to a light-sensitive receiving element changes with illumination intensity and illumination time; when the light quantity of the light-sensitive receiving element reaches a preset value, the preset value is read by a single-chip microcomputer, and the light guide type key is conducted. Different regions of the keyboard are provided with keys with different key forces, the key conduction required by different fingers is different in the number of down-pressing forces, the key force layout is more reasonable, the keyboard key mis-triggering can be well solved, the keyboard can better adapt to the human engineering layout, and the key experience is better.

Description

Technical Field

[0001] This invention relates to the field of mechanical keyboards, and particularly to a key with adjustable key pressure and a mechanical keyboard. Background Technology

[0002] Mechanical keyboards, as representatives of high-end products, are increasingly favored by users, especially gamers. Consequently, users' demands for mechanical keyboards are also rising, and existing mechanical keyboards are increasingly failing to meet these needs. For example, common mechanical keyboards directly determine whether a key is active by its key travel distance. Due to the fixed mechanical structure of the keys, once the entire mechanical keyboard is manufactured, the key travel distance is fixed, and the key activation conditions and response time are not adjustable. This makes it prone to accidental triggering and fails to well adapt to the usage habits of different users. Furthermore, the usage habits of the same user may change over time, and the mechanical keyboard cannot be adjusted accordingly.

[0003] The patent number is 201620675841.7, and the patent title is: "A Photoconductive Key Switch and Mechanical Keyboard with Simulated Gradual Input." The disclosed photoconductive mechanical keyboard is a typical example of a photoconductive key switch and mechanical keyboard where the key travel determines whether a key is active. In this patent, the second light-blocking device of the photoconductive key is located between the first and second light guides. Its upper part is a right-angled trapezoid, and its lower part is a rectangle. When the user presses the key, the light intensity from the first to the second light guide gradually changes per unit time (gradually increasing when normally closed and gradually decreasing when normally open). The voltage applied to the light-receiving element changes linearly, thus realizing the function of simulating gradual input. In the above process, the photoconductive push button switch uses the button travel as the button conduction parameter. Taking a normally closed switch as an example, its operation process is: the larger the button travel → the greater the unit light intensity → the shorter the time required for the voltage on the light receiving element to increase to the set value → the shorter the time required for the button to conduct. The advantage of this technical solution is that the button travel is used as the button conduction parameter, which corresponds to the button conduction time, which is more intuitive. The disadvantage of this technical solution is that in addition to the fixed button conduction travel, the button conduction trigger condition and the button response time being unadjustable and prone to false triggering, there is also the need for analog-to-digital conversion between the light receiving element and the microcontroller, which requires the use of an A / D conversion module. The existence of the A / D conversion module makes: (1) increase the hardware cost of a single button. A keyboard has hundreds of buttons, and the cumulative effect of hardware cost is more obvious; (2) increase the data processing time and reduce the button response time; (3) each button's light receiving element needs to be connected in parallel with a capacitor as a voltage regulator unit, which also increases the hardware cost of the button and keyboard. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and to provide a button with adjustable button force.

[0005] Another objective of this invention is to provide a mechanical keyboard with adjustable key pressure.

[0006] Another object of the present invention is to provide a mechanical keyboard.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A button with adjustable pressure, characterized in that: the pressure value of the button is used as the conduction condition of a single button, and the pressure value and response time form a proportional function relationship;

[0009] The operation process of a single button using a normally closed switch is as follows: the greater the button force, the greater the button travel, the greater the unit light intensity, the shorter the time required for the light received by the photosensitive receiving element to reach the preset value, and the shorter the time required for the button to conduct; if the button force reaches the preset value, the light received by the button's photosensitive receiving element will reach the preset value, and the button will conduct; if the button force is less than the preset value, the light received by the photosensitive receiving element will accumulate over time and eventually reach the preset value, and the button will eventually conduct.

[0010] Similarly, the operation of a single button using a normally open switch is as follows: the greater the button force, the greater the button travel, the smaller the unit light intensity, and the shorter the time required for the light received by the photosensitive receiving element to reach the cutoff.

[0011] The button is a light-guided button. A first light-blocking device is provided between the first light guide and the second light guide of the light-guided button. The upper part of the first light-blocking device is one of a right-angled trapezoid, a near-right-angled trapezoid, a right-angled triangle, or a near-right-angled triangle, and the lower part is a rectangle. The light-guided button uses the button's weight as the button's conduction parameter. When the user presses the button handle, the light intensity from the first light guide to the second light guide gradually changes per unit time. At the same time, the amount of light transmitted from the second light guide to the photosensitive receiving element changes with the illuminance and illumination time. When the amount of light transmitted to the photosensitive receiving element reaches a preset value, the microcontroller reads the preset value, and the light-guided button is turned on.

[0012] The light path of the light-guided button is H-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element disposed on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device. The first light guide is disposed above the LED emitting element, and the second light guide is disposed above the photosensitive receiving element. The first light guide has a light-transmitting part and a first reflective part, and the second light guide has a second reflective part. The light-transmitting part is used to transmit the light emitted by the LED emitting element. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after being reflected by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

[0013] The LED emitting element is a monochrome LED, a dual-color LED, or an RGB tri-color LED.

[0014] The light path of the light-guided button is n-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element disposed on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device. The first light guide is disposed above the LED emitting element, and the second light guide is disposed above the photosensitive receiving element. The first light guide has a first reflective part, and the second light guide has a second reflective part. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after being reflected by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

[0015] The light guide button also includes an LED backlight mounted on the PCB board. The main body of the light guide button is provided with a light guide plate for transmitting the light emitted by the LED backlight. The main body of the light guide button includes a housing and a handle mounted on the housing. The housing is provided with a light guide groove that matches the light guide plate.

[0016] The first reflective part is tilted to the left, and the second reflective part is tilted to the right.

[0017] The photosensitive receiving element is a photodiode or a phototransistor.

[0018] Both the first light guide and the second light guide are single units and are assembled in the housing, or the first light guide, the second light guide and the housing are formed by two-color injection molding.

[0019] The button is normally closed. When the button is not pressed, the first light-blocking device blocks the light transmission path from the first light guide to the second light guide. When the button is pressed, it moves the first light-blocking device downward, opening the light transmission path from the first light guide to the second light guide.

[0020] The push-button switch is normally open. When the button is not pressed, the first light-blocking device makes the light transmission path from the first light guide to the second light guide open. When the button is pressed, it drives the first light-blocking device to move downward, thus blocking the light transmission path from the first light guide to the second light guide.

[0021] The button is a magnetic axis button.

[0022] Another objective of this invention is achieved through the following technical solution:

[0023] A mechanical keyboard with adjustable key pressure includes a PCB board and multiple keys mounted on the PCB board. The keys are configured with different pressure values ​​based on their position on the mechanical keyboard to determine whether they are conductive. The pressure value for key conductivity is adjusted by a host computer.

[0024] The mechanical keyboard collects the actuation force values ​​of each key pressed by the user via a host computer, using this data as a training set for an AI intelligent learning model. Based on the user's usage habits, the AI ​​model continuously updates multiple key pressure layouts for the user to choose from. Through AI intelligent learning, it understands the user's key pressing habits and intelligently provides a more personalized and rational key pressure layout; a scientifically designed key pressure layout that conforms to the ergonomics of most users can be preset at the factory.

[0025] Another objective of this invention is achieved through the following technical solution:

[0026] A mechanical keyboard, if its keys use mechanical, magnetic, or optical switches that do not have simulated gradient, then keys of different strengths are directly installed in the corresponding positions according to the ergonomic layout.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] 1. This invention sets different key pressures in different areas of the keyboard, so that the amount of pressure required to activate the key corresponding to different fingers is different. The key pressure layout is more reasonable, which can not only solve the problem of accidental key triggering, but also better adapt to the ergonomic layout and improve the key experience.

[0029] 2. This invention uses the key pressure value as the conduction condition for a single key. Without changing the mechanical mechanism, the key pressure value and response time form a proportional function relationship, and under the same conditions, a faster response speed can be achieved. In contrast, existing mechanical keyboards only have two states: on and off. Once the keyboard structure is fixed, its response speed is also fixed and is unrelated to the key pressure value.

[0030] 3. This invention uses the pressure value of a key press as the conduction condition for a single key, and sets different pressure values ​​for keys in different areas of the mechanical keyboard accordingly.

[0031] When the key uses a normally closed optical analog gradient switch, the key is activated when the user presses down with a force value that reaches a preset value. At the same time, the greater the force of the user's downward press, the greater the downward travel of the key, the greater the amount of light entering from the light emitter to the light receiver of the optical axis mechanical keyboard key, and the shorter the trigger time for the key to activate. The force of the downward press and the activation time of the key are inversely proportional. Therefore, the activation time of the key is read using this inverse proportional function to send codes, that is, codes are sent according to different key press forces.

[0032] Similarly, when the mechanical keyboard is an optical axis mechanical keyboard and the keys use normally open optical analog gradient switches, depending on the different circuit designs, the amount of force the user presses down is directly proportional to or inversely proportional to the key conduction time. This direct or inverse proportional relationship can be used to read the key conduction time to send codes, thus enabling the sending of codes based on different key press forces.

[0033] 4. The photosensitive receiving element of the photoconductive button of the present invention does not require a capacitor in parallel, and no A / D conversion module is needed between the photosensitive receiving element and the microcontroller. Compared with the photoconductive button that determines whether the button is activated by the length of the button travel (e.g., patent 201620675841.7), the hardware structure is further simplified, which can effectively reduce costs. Moreover, because the A / D conversion module is reduced, the data processing time in the intermediate links is reduced accordingly, and the reading time required by the microcontroller is reduced, ultimately achieving the goal of reducing the button activation response time.

[0034] The fundamental reason for the simplified hardware structure of this invention lies in the different design concept of key conduction. Compared with optically guided keys that determine whether a key is conducting based on the length of its travel (e.g., patent 201620675841.7), the core difference of this invention is that it uses the pressure applied to the key as the conduction condition for a single key. Different pressure values ​​are set for keys in different areas of the mechanical keyboard. Taking a normally closed switch as an example, the operation process of a single key is: the greater the pressure applied to the key → the greater the travel of the key → the greater the unit light intensity → the shorter the time required for the light received by the photosensitive element to reach the preset value → the shorter the time required for the key to conduct. The differences between the two are further clarified as follows: In the former, once the button travel reaches the preset value, the voltage corresponding to the light intensity received by the light receiving element also reaches the preset value, and the button is turned on. If the button travel is less than the preset value, even if the button stays at this position for a long time, the button will not be turned on. Although the button force of the present invention is related to the button travel (the greater the button force, the greater the button travel), the button turn-on logic is completely different from that of the former. When the button force of the present invention reaches the preset value, the amount of light received by the photosensitive receiving element reaches the preset value, and the button is turned on. If the button force is less than the preset value, the amount of light received by the photosensitive receiving element will accumulate over time and eventually reach the preset value, and the button will eventually be turned on. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the light-guided button with adjustable button force according to Embodiment 1 of the present invention. In this case, the light path of the light-guided button is h-shaped.

[0036] Figure 2 This is a schematic diagram of the structure of the light-guided button body with adjustable button force according to Embodiment 1 of the present invention.

[0037] Figure 3 This is a schematic diagram of the structure of the light-guided button with adjustable button force in Embodiment 2 of the present invention. In this case, the light path of the light-guided button is n-type.

[0038] Figure 4 This is a schematic diagram of the structure of the light-guided button body with adjustable button force according to Embodiment 2 of the present invention.

[0039] Figure 5 This is a schematic diagram illustrating the functional relationship between button force and button conduction time.

[0040] in:

[0041] Figure 1-2In the middle, 1-PCB board, 2-LED emitting element, 3-photosensitive receiving element, 4-housing, 5-handle, 6-first light guide, 7-second light guide, 8-light-transmitting part, 9-first reflective part, 10-second reflective part, 11-backlight path, 12-light transmission path, 13-first light-blocking device, 14-elastic device, 15-second light-blocking device.

[0042] Figure 3-4 In the middle, 1-PCB board, 2-LED emitting element, 3-photosensitive receiving element, 4-LED backlight, 5-housing, 6-handle, 7-first light guide, 8-second light guide, 9-first reflector, 10-second reflector, 11-light transmission path, 12-first light blocking device, 13-elastic device, 14-second light blocking device, 15-light guide plate, 16-fixed plate. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0044] Example 1

[0045] like Figure 1 , 2 5. A light-guided button with adjustable button force, wherein a first light-blocking device is provided between the first light guide and the second light guide of the light-guided button, the upper part of the first light-blocking device is a right-angled trapezoid and the lower part is a rectangle; the light-guided button uses the button force as the button conduction parameter. After the user presses the button handle, the light intensity from the first light guide to the second light guide gradually changes per unit time. At the same time, the amount of light transmitted from the second light guide to the photosensitive receiving element changes with the illuminance and the illumination time. When the amount of light transmitted to the photosensitive receiving element reaches a preset value, the microcontroller reads the preset value and the light-guided button is turned on.

[0046] The upper part of the first light-blocking device can also adopt a quasi-right trapezoid, a right triangle, or a quasi-right triangle. The difference between a quasi-right trapezoid and a right trapezoid lies in the hypotenuse. The hypotenuse of a right trapezoid is a straight line, while the hypotenuse of a quasi-right trapezoid is a curve with fixed or variable curvature. The same applies to the difference between a right triangle and a quasi-right triangle.

[0047] The light path of the light-guided button is H-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element mounted on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device, which is a light-blocking plate. The first light guide is positioned above the LED emitting element, and the second light guide is positioned above the photosensitive receiving element. The first light guide has a light-transmitting part and a first reflective part, and the second light guide has a second reflective part. The light-transmitting part is used to transmit the light emitted by the LED emitting element. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after reflection by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

[0048] The LED emitting element is a monochrome LED, a dual-color LED, or an RGB tri-color LED.

[0049] The first reflective part is tilted to the left, and the second reflective part is tilted to the right.

[0050] The photosensitive receiving element is a phototransistor.

[0051] The first light guide, the second light guide, and the housing are formed by two-color injection molding.

[0052] The button is normally closed. When the button is not pressed, the first light-blocking device blocks the light transmission path from the first light guide to the second light guide. When the button is pressed, it moves the first light-blocking device downward, opening the light transmission path from the first light guide to the second light guide.

[0053] A mechanical keyboard with adjustable key pressure includes a PCB board and a plurality of key switches disposed on the PCB board. Each key switch includes a handle that can move up and down. The key is set with different pressure values ​​according to its position on the mechanical keyboard to determine whether it is conductive. The pressure value for key conduction is adjusted by a host computer.

[0054] The keyboard is designed with ergonomic key pressure settings corresponding to different fingers. For example, the index finger requires the most force, followed by the middle finger, ring finger, and little finger, which require the least force. This allows you to assign a relatively heavy force to the keys corresponding to the left index finger (4, 5, R, T, F, G, V, B, Space), a relatively heavy force to trigger the key, a relatively heavy force to the keys corresponding to the left middle finger (3, E, D, C), a moderate force to trigger the key, a moderate force to trigger the keys corresponding to the left ring finger (2, W, S, X, ALT_LEFT), and a relatively light force to trigger the key. The same applies to the keys corresponding to the left little finger (ESC, TAB, CAPS, SHIFT_LEFT, CTRL_LEFT, WIN, 1, Q, A, Z, ALT_LEFT). The right hand follows the same settings, truly achieving ergonomic keyboard design.

[0055] The working process of a mechanical keyboard with adjustable key pressure includes the following steps:

[0056] Using the pressure applied to a key as the activation condition for that key, different pressure values ​​are set for keys in different areas of the mechanical keyboard.

[0057] When the mechanical keyboard is an optical axis mechanical keyboard and the key uses a normally closed optical analog gradient switch, the key will be activated when the user presses down with a preset force; simultaneously, if... Figure 5 The greater the force applied by the user when pressing down, the greater the key travel, the greater the amount of light entering the optical axis mechanical keyboard from the light emitter to the light receiver, and the shorter the key activation time. The force applied when pressing down is inversely proportional to the key activation time. This inverse proportional relationship is used to read the key activation time and send codes accordingly, i.e., codes are sent based on different key press forces.

[0058] The greater the downward travel of the button, the more light is transmitted to the receiver. At the same time, the greater the pressing force of the button, the more stable the standard for judging high and low voltage by the IO port as an input port is a constant when the voltage is stable. At this time, the greater the amount of light entering the optical axis, the shorter the button trigger time.

[0059] Assuming the button is fully pressed down, the light intake is at its maximum and the pressure is at its heaviest. In this case, the button only needs 15µs to trigger conduction.

[0060] Assuming all the circuit buttons remain unchanged, and only one button is pressed halfway down, with the button pressing force approximately halfway down and the light intake halfway to the maximum light intake, then the time required to trigger this button is at least 15µs.

[0061] Example 2

[0062] like Figure 3 , 4 Except for the following content which differs from Example 1, all other contents are the same as in Example 1.

[0063] The light path of the light-guided button is n-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element disposed on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device, which is a light-blocking plate. The first light guide is disposed above the LED emitting element, and the second light guide is disposed above the photosensitive receiving element. The first light guide has a first reflective part, and the second light guide has a second reflective part. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after being reflected by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

[0064] The light guide button also includes an LED backlight mounted on the PCB board. The main body of the light guide button is provided with a light guide plate for transmitting the light emitted by the LED backlight. The main body of the light guide button includes a housing and a handle mounted on the housing. The housing is provided with a light guide groove that matches the light guide plate.

[0065] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A button with adjustable key pressure, characterized in that: The pressure applied to a button is used as the activation condition for a single button, and the pressure applied is proportional to the response time. The operation process of a single button using a normally closed switch is as follows: the greater the button force, the greater the button travel, the greater the unit light intensity, the shorter the time required for the light received by the photosensitive receiving element to reach the first preset value, and the shorter the time required for the button to conduct; if the button force reaches the second preset value, the light received by the button's photosensitive receiving element reaches the first preset value, and the button conducts; if the button force is less than the second preset value, the light received by the photosensitive receiving element will accumulate over time and eventually reach the first preset value, and thus the button will eventually conduct. Similarly, the operation of a single button using a normally open switch is as follows: the greater the button force, the greater the button travel, the smaller the unit light intensity, and the shorter the time required for the light received by the photosensitive receiving element to reach the cutoff. The button is a light-guided button. A first light-blocking device is provided between the first light guide and the second light guide of the light-guided button. The upper part of the first light-blocking device is a right-angled trapezoid or right-angled triangle, and the lower part is a rectangle. The light-guided button uses the button's weight as the button's conduction parameter. When the user presses the button handle, the light intensity from the first light guide to the second light guide gradually changes per unit time. At the same time, the amount of light transmitted from the second light guide to the photosensitive receiving element changes with the illuminance and illumination time. When the amount of light transmitted to the photosensitive receiving element reaches a preset value, the microcontroller reads the preset value, and the light-guided button is turned on. The light path of the light-guided button is H-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element disposed on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device. The first light guide is disposed above the LED emitting element, and the second light guide is disposed above the photosensitive receiving element. The first light guide has a light-transmitting part and a first reflective part, and the second light guide has a second reflective part. The light-transmitting part is used to transmit the light emitted by the LED emitting element. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after being reflected by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

2. The button with adjustable key force according to claim 1, characterized in that: The LED emitting element is a monochrome LED, a dual-color LED, or an RGB tri-color LED.

3. A button with adjustable button force, characterized in that: The pressure applied to a button is used as the activation condition for a single button, and the pressure applied is proportional to the response time. The operation process of a single button using a normally closed switch is as follows: the greater the button force, the greater the button travel, the greater the unit light intensity, the shorter the time required for the light received by the photosensitive receiving element to reach the first preset value, and the shorter the time required for the button to conduct; if the button force reaches the second preset value, the light received by the button's photosensitive receiving element reaches the first preset value, and the button conducts; if the button force is less than the second preset value, the light received by the photosensitive receiving element will accumulate over time and eventually reach the first preset value, and thus the button will eventually conduct. Similarly, the operation of a single button using a normally open switch is as follows: the greater the button force, the greater the button travel, the smaller the unit light intensity, and the shorter the time required for the light received by the photosensitive receiving element to reach the cutoff. The button is a light-guided button. A first light-blocking device is provided between the first light guide and the second light guide of the light-guided button. The upper part of the first light-blocking device is a right-angled trapezoid or right-angled triangle, and the lower part is a rectangle. The light-guided button uses the button's weight as the button's conduction parameter. When the user presses the button handle, the light intensity from the first light guide to the second light guide gradually changes per unit time. At the same time, the amount of light transmitted from the second light guide to the photosensitive receiving element changes with the illuminance and illumination time. When the amount of light transmitted to the photosensitive receiving element reaches a preset value, the microcontroller reads the preset value, and the light-guided button is turned on. The light path of the light-guided button is n-shaped. The light-guided button includes an LED emitting element and a photosensitive receiving element disposed on a PCB board. The LED emitting element and the photosensitive receiving element are separated by a second light-blocking device. The first light guide is disposed above the LED emitting element, and the second light guide is disposed above the photosensitive receiving element. The first light guide has a first reflective part, and the second light guide has a second reflective part. The first reflective part reflects the light emitted by the LED emitting element to the second reflective part, and after being reflected by the second reflective part, it returns to the photosensitive receiving element. The first light-blocking device is used to block the light transmitted from the first light guide to the second light guide, wherein the inclined surface of the first light-blocking device is perpendicular to the light transmission direction from the first light guide to the second light guide.

4. The button with adjustable key force according to claim 3, characterized in that: The light guide button also includes an LED backlight mounted on a PCB board. The main body of the light guide button is provided with a light guide plate for transmitting the light emitted by the LED backlight. The main body of the light guide button includes a housing and a handle mounted on the housing. The housing is provided with a light guide groove that matches the light guide plate.

5. The button with adjustable key force according to claim 1 or 3, characterized in that: The first reflective part is tilted to the left, and the second reflective part is tilted to the right.

6. The button with adjustable key force according to claim 1 or 3, characterized in that: The photosensitive receiving element is a photodiode or a phototransistor.

7. The button with adjustable key force according to claim 1 or 3, characterized in that: Both the first light guide and the second light guide are single units and are assembled in the housing, or the first light guide, the second light guide and the housing are formed by two-color injection molding.

8. The button with adjustable key force according to claim 1 or 3, characterized in that: The button is normally closed. When the button is not pressed, the first light-blocking device blocks the light transmission path from the first light guide to the second light guide. When the button is pressed, it moves the first light-blocking device downward, opening the light transmission path from the first light guide to the second light guide.

9. The button with adjustable key force according to claim 1 or 3, characterized in that: The push-button switch is normally open. When the button is not pressed, the first light-blocking device makes the light transmission path from the first light guide to the second light guide open. When the button is pressed, it drives the first light-blocking device to move downward, thus blocking the light transmission path from the first light guide to the second light guide.

10. A mechanical keyboard with adjustable key pressure, comprising a PCB board and a plurality of keys arranged on the PCB board, characterized in that: The button described in any one of claims 1 to 4 is used, and the button is set with different force values ​​according to its position on the mechanical keyboard to determine whether it is conductive; the force value for the button to conduct is adjusted by a host computer.

11. The mechanical keyboard according to claim 10, characterized in that: The mechanical keyboard collects the pressure values ​​of each key pressed by the user through a host computer, which is used as a training set for the AI ​​intelligent learning model. The AI ​​intelligent learning model continuously updates multiple key pressure layouts for the user to choose from based on the user's usage habits.

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