TWM643656U - Optical axis keyboard - Google Patents

Abstract

The present model discloses an optical axis keyboard, which comprises a base, a PCB board arranged above the base, several key switches arranged on the PCB board, and an array of light conducting components corresponding to the several key switches one by one. The light conducting component includes an infrared emitting element and the photosensitive receiving element arranged oppositely. mask. The optical axis keyboard provided by the new model solves the defects of unstable working performance and easy short circuit caused by long-term contact between the positive shrapnel and the negative shrapnel in each key switch in the existing mechanical keyboard. At the same time, the purpose of preventing cross-lighting, preventing signal interference, and dustproof and waterproof is achieved, which is beneficial to improving the accuracy of the conduction and disconnection of the key switch on the keyboard.

Description

An optical axis keyboard

The present invention relates to the technical field of keyboards, in particular to an optical axis keyboard.

Mechanical keyboard is a type of keyboard. In terms of structure, each key of the mechanical keyboard has a separate switch to control the closure. This switch is also called "axis". According to the classification of key switches, mechanical keyboards can be divided into traditional brown switches, green switches, white switches, black switches, and red switches. It is precisely because each button is composed of an independent switch, so the button has a strong sense of paragraph, which produces a special feel suitable for game entertainment, so it is usually used as a relatively expensive high-end game peripheral.

At present, the existing mechanical keyboards are generally conducted through two metal shrapnels, the positive pole and the negative pole. On the one hand, the contacts of the metal shrapnel will be worn out due to the mutual contact and impact of the keys when they move up and down, which will lead to a large decrease in lifespan and make the working performance of the mechanical keyboard unstable. On the other hand, when water enters the key switch of the mechanical keyboard, it will short-circuit the positive shrapnel and the negative shrapnel, and also corrode the contacts of the two, resulting in poor contact of the contacts, thereby making the function of the mechanical keyboard unstable. And because the cost of mechanical keyboards is generally relatively high, once such unstable working performance occurs, it will greatly affect the user's sense of use, and the user is likely to replace the entire mechanical keyboard, which causes unnecessary waste.

In view of the above deficiencies, the purpose of this new model is to provide an optical axis keyboard, which solves the problems of the positive shrapnel and the negative electrode in each key switch in the existing mechanical keyboard. Long-term contact between the shrapnel leads to wear and tear, resulting in unstable working performance and short-circuit defects. At the same time, the purpose of preventing cross-lighting, preventing signal interference, and dustproof and waterproof is achieved, which is beneficial to improving the accuracy of the conduction and disconnection of the key switch on the keyboard.

The technical scheme adopted by this new model to achieve the above object is: an optical axis keyboard, comprising a base, a PCB board arranged above the base, several key switches arranged on the PCB board and an array of light conducting components corresponding to the several key switches. The light conducting component includes an infrared emitting element and a photosensitive receiving element arranged oppositely. The light conducting components correspond to several shading covers one by one.

As a further improvement of the present model, the shading cover is fixedly arranged on the base.

As a further improvement of the present model, the shading cover is integrally formed on the base.

As a further improvement of the present invention, the shading cover is sandwiched between the PCB board and the base.

As a further improvement of the present invention, the light conducting component is arranged on the lower surface of the PCB, and the light shield covers the light conducting component therein.

As a further improvement of the present invention, the shading cover is provided with two first accommodating cavities, the infrared emitting element is accommodated in one of the first accommodating cavities, the photosensitive receiving element is accommodated in the other first accommodating cavity, and a light-shielding wall is formed on the periphery of the two first accommodating cavities; an opening is formed on one side of the light-shielding wall, and the two first accommodating cavities are connected through the opening to form a light channel, and the light channel is located below the light-blocking axis.

As a further improvement of the present invention, several first through holes are opened on the PCB for mounting the several key switches and for passing the light blocking shaft, and the first through holes are located above the light channel.

As a further improvement of the present invention, the light conducting component is embedded in the PCB board.

As a further improvement of the present invention, two second accommodating cavities are provided in the PCB, the infrared emitting element is accommodated in one of the second accommodating cavities, and the photosensitive receiving element is accommodated in another second accommodating cavity; several second through holes are opened on the PCB board for the installation of the plurality of key switches and for the penetration of the light blocking shaft, the two second accommodating cavities are connected through the second through holes to form a light channel, and the light channel is located below the light blocking shaft.

The beneficial effects of the present invention are:

(1) By adding a plurality of shading covers corresponding to the array of light-conducting components one by one between the PCB board and the base, it is used to block the light outside the key switch, prevent external light from generating signal interference to the light-conducting component, and avoid the problems of cross-light and signal interference; at the same time, the light-shielding cover plays a role of dustproof and waterproof to the light-conducting component, thereby helping to improve the accuracy of the light-conducting component’s conduction and disconnection without false conduction.

(2) By using the light conduction component to realize the on and off function of the key switch, it can effectively avoid the problem of wear and tear between the two metal shrapnels of the traditional mechanical keyboard due to the mutual contact and impact of the switch shaft moving up and down, thereby prolonging the life of the product and making the working performance of the keyboard more stable. At the same time, it effectively prevents the keyboard from short-circuiting between the positive and negative shrapnel due to water ingress, resulting in poor contact and unstable keyboard functions, further ensuring the service life of the keyboard and ensuring the functional stability of the keyboard. And because of the optical sensing recognition principle and technology used, further The sensitivity of the keyboard is further improved, the practicability of the keyboard is improved, and the experience of using the keyboard is better.

The above is an overview of the novel technical solution, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

1: PCB board

10: base

11: The first through hole

12: The second storage chamber

13: Second through hole

2: Key switch

20: light blocking axis

21: guide core

22: Mounting column

3: Array light conduction components

31: infrared emitting element

32: photosensitive receiving element

4: Hood

41: The first accommodation cavity

42: Blackout fence

43: opening

FIG. 1 is a partial structural diagram of an optical axis keyboard in Embodiment 1 of the present invention.

Fig. 2 is a partial exploded view of the optical axis keyboard in the first embodiment of the present invention.

3 is a partial cross-sectional view of the optical axis keyboard in which the shading cover is integrally formed on the base in the first embodiment of the present invention.

Fig. 4 is a partial cross-sectional view of the optical axis keyboard between the PCB board and the base in the first embodiment of the present invention where the shading cover is sandwiched.

FIG. 5 is a schematic structural view of a light shield in Embodiment 1 of the present invention.

Fig. 6 is a partial sectional view of the optical axis keyboard in the second embodiment of the present invention.

In order to further explain the technical means and effects of the new model to achieve the intended purpose, the specific implementation of the new model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Embodiment one:

Please refer to FIG. 1 to FIG. 3 , the present embodiment provides an optical axis keyboard, including a base 10, a PCB board 1 arranged above the base 10, several key switches 2 arranged on the PCB board 1, and an array of photoconductive components 3 corresponding to the several key switches 2. Specifically, the photoconductive component 3 includes an infrared emitting element 31 and a photosensitive receiving element 32 arranged oppositely. A block of light between 2 The shaft 20 is provided between the PCB board 1 and the base 10 with several light shields 4 corresponding to the array of light conducting components 3 one by one. The light shields 4 are used to block the external light of the key switch 2 to prevent signal interference from the external light to the light conducting component 3 .

In this embodiment, the light blocking shaft 20 is disposed at the lower end of the guide core 21 of the key switch 2 , as shown in FIG. 3 . Therefore, when the pressing guide core 21 moves up and down, the light blocking shaft 20 moves up and down accordingly. At the same time, the spring in the key switch 2 provides elastic restoration force for the upward movement and reset of the guide core 21 . When the guide core 21 is pressed down, the light blocking shaft 20 is driven to move down synchronously, and then the light blocking shaft 20 moves down between the infrared emitting element 31 and the photosensitive receiving element 32, and the light emitted by the infrared emitting element 31 is blocked, so that the photosensitive receiving element 32 cannot receive it, that is, the light blocking shaft 20 blocks the optical path between the infrared emitting element 31 and the photosensitive receiving element 32. At this time, a signal is given to the PCB board 1, and this signal is defined as a key switch conduction signal. . When the pressing on the guide core 21 is released, the guide core 21 and the light-blocking shaft 20 move up and reset under the drive of the spring, and the light-blocking shaft 20 leaves between the infrared emitting element 31 and the photosensitive receiving element 32, and no longer blocks the optical path between the infrared emitting element 31 and the photosensitive receiving element 32, and the photosensitive receiving element 32 can normally receive the light emitted by the infrared emitting element 31. At this time, a signal is given to the PCB board 1, and this signal is defined as a key switch disconnection signal. .

Thus, through the structural combination of the light-blocking shaft 20 and the light-conducting component 3 , the optical path between the infrared emitting element 31 and the photosensitive receiving element 32 is turned on or blocked, thereby realizing the turn-on and turn-off functions of the key switch 2 .

In this embodiment, the light conducting component 3 is disposed on the lower surface of the PCB 1 , and the light shield 4 covers the light conducting component 3 therein, as shown in FIG. 3 .

In order to prevent cross-light and signal interference problems, as shown in Figure 3 and Figure 5 As shown, two first accommodating cavities 41 are arranged in the shading cover 4, the infrared emitting element 31 is accommodated in one of the first accommodating cavities 41, the photosensitive receiving element 32 is accommodated in another first accommodating cavity 41, and a light-shielding wall 42 is formed on the periphery of the two first accommodating cavities 41; 0 below. The infrared emitting element 31 and the photosensitive receiving element 32 are respectively surrounded by the light-shielding wall 42 on the periphery of the two first accommodating cavities 41, so that the light emitted by the infrared emitting element 31 can only be emitted from the light channel to the photosensitive receiving element 32 for reception, and the light blocking axis 20 only needs to move down into the light channel to block the light. At the same time, combined with the peripheral wall of the shading cover 4, the external light will not enter, that is, the light emitted by the infrared emitting element 31 will be blocked from the external light, so as to prevent the problems of cross-light and signal interference, thereby improving the accuracy of the conduction and disconnection of the light-conducting component 3 without false conduction. At the same time, the special structure inside the shading cover 4 plays a further role of dustproof and waterproof for the light conducting component 3 .

For the installation of the key switch 2, as shown in Figure 2 and Figure 3, several first through holes 11 are provided on the PCB 1 for the installation of the several key switches 2 and for the light blocking shaft 20 to pass through, and the first through holes 11 are located above the light channel. Specifically, the mounting column 22 at the bottom of the key switch 2 is snapped into the first through hole 11 , so that the key switch 2 can be mounted on the PCB 1 . At the same time, when the guide core 21 is pressed down, the light blocking shaft 20 can pass through the mounting post 22 and extend into the light shield 4 to realize the shielding of light.

For the installation of this light shield 4, there are following two ways:

The first method is: as shown in FIG. 3 , the shading cover 4 is fixedly arranged on the base 10 , specifically, the shading cover 4 can be integrally formed on the base 10 . superior.

The second method is: as shown in FIG. 4 , the shading cover 4 is sandwiched between the PCB board 1 and the base 10 . After the PCB board 1 and the base 10 are fixedly installed on the keyboard, the positions of the two are fixed, and the light shield 4 can be clamped and limited between them.

Regardless of which of the above two methods is used for the shading cover 4 to be installed, the shading cover 4 can be fixed between the PCB board 1 and the base 10, so that the shading cover 4 can prevent cross-lighting, signal interference, dustproof and waterproof, and help improve the accuracy of the key switch on the keyboard.

In this embodiment, the light conduction component 3 is used to realize the on and off functions of the key switch 2, which can effectively avoid the problem of wear and tear between the two metal shrapnels of the traditional mechanical keyboard due to the mutual contact and impact of the switch shaft moving up and down, thereby prolonging the life of the product and making the working performance of the keyboard more stable. At the same time, it effectively prevents the keyboard from short-circuiting between the positive and negative shrapnel due to water ingress, resulting in poor contact and unstable keyboard functions, further ensuring the service life of the keyboard and ensuring the functional stability of the keyboard. Moreover, due to the optical sensing recognition principle and technology used, the sensitivity of the keyboard is further improved, the practicability of the keyboard is improved, and the experience of using the keyboard is better.

Embodiment two:

The main difference between this embodiment and the first embodiment is that, as shown in FIG. 6 , the light conducting component 3 is embedded in the PCB 1 . At the same time, the PCB 1 is provided with two second accommodating cavities 12, the infrared emitting element 31 is accommodated in one of the second accommodating cavities 12, and the photosensitive receiving element 32 is accommodated in another second accommodating cavity 12; the PCB board 1 is provided with the plurality of second through holes 13 for the installation of the plurality of key switches 2 and for the penetration of the light blocking shaft 20, and the two second accommodating cavities 12 pass through the second accommodating cavity 12. The through holes 13 are connected to form a light channel, and the light channel is located below the light blocking axis 20 .

The two second accommodating cavities 12 house the infrared emitting element 31 and the photosensitive receiving element 32 respectively, so that the light emitted by the infrared emitting element 31 can only be emitted from the light channel to the photosensitive receiving element 32 for reception, and the light blocking axis 20 only needs to move down into the light channel to block the light. At the same time, the second through hole 13 is surrounded by the peripheral wall of the shading cover 4, so that external light will not enter from the second through hole 13, that is, the light emitted by the infrared emitting element 31 is blocked from the external light, so as to prevent the problems of cross-light and signal interference, thus, it is beneficial to improve the accuracy of the conduction and disconnection of the light conducting component 3, and the phenomenon of false conduction will not occur. At the same time, the shading cover 4 plays a further role of dustproof and waterproof for the light conducting component 3 .

In this embodiment, the mounting column 22 at the bottom of the key switch 2 is also snapped into the second through hole 13 , so that the key switch 2 can be installed on the PCB 1 . The difference is that a transverse perforation corresponding to the light channel is also formed on the mounting post 22 , which facilitates the photosensitive receiving element 32 to receive the light emitted by the infrared emitting element 31 . When the guide core 21 is pressed down, the light blocking shaft 20 can pass through the mounting post 22 , that is, enter the light channel, so as to shield the light.

What needs to be explained here is that the optical axis keyboard disclosed in the present invention is an improvement on the specific structure, but the specific control method is not an innovative point of the present invention. For the infrared emitting element, photosensitive receiving element and other components involved in the present model, it can be a general standard part or a component known to those skilled in the art, and its structure, principle and control mode are known to those skilled in the art through technical manuals or known through conventional experimental methods.

The above are only preferred embodiments of the present invention, and are not intended to limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present invention are all within the scope of protection of the present invention. within.

1: PCB board

2: Key switch

Claims (9)

An optical axis keyboard, comprising a base, a PCB board arranged above the base, several key switches arranged on the PCB board, and an array of light-conducting components corresponding to the several key switches, the light-conducting component includes an infrared emitting element and a photosensitive receiving element arranged oppositely, a light-blocking axis for blocking light between the infrared emitting element and the photosensitive receiving element is arranged on the key switch, and several light-shielding components corresponding to the array of light-conducting components are arranged between the PCB board and the base hood. According to the optical axis keyboard described in Claim 1, the shading cover is fixedly arranged on the base. According to the optical axis keyboard described in claim 2, the shading cover is integrally formed on the base. According to the optical axis keyboard described in claim 1, the light shield is clamped and limited between the PCB board and the base. According to the optical axis keyboard according to any one of claims 1 to 4, the light conducting component is arranged on the lower surface of the PCB, and the light shield covers the light conducting component therein. As for the optical axis keyboard described in claim 5, the shading cover is provided with two first accommodating cavities, the infrared emitting element is accommodated in one of the first accommodating cavities, the photosensitive receiving element is accommodated in the other first accommodating cavity, light-shielding walls are respectively formed on the periphery of the two first accommodating cavities; an opening is formed on one side of the light-shielding wall, and the two first accommodating cavities are connected through the opening to form a light channel, and the light channel is located below the light-shielding axis. As for the optical axis keyboard described in claim 6, several first through holes are opened on the PCB board for the installation of the several key switches and for the light blocking axis to pass through. The first through hole is located above the light channel. In the optical axis keyboard according to any one of claims 1 to 4, the light conducting component is embedded in the PCB board. As for the optical axis keyboard described in claim item 8, the PCB board is provided with two second accommodation cavities, the infrared emitting element is accommodated in one of the second accommodation cavities, and the photosensitive receiving element is accommodated in the other second accommodation cavity; several second through holes are opened on the PCB board for the installation of the plurality of key switches and for the penetration of the light blocking shaft, and the two second accommodation cavities are connected through the second through holes to form a light channel, and the light channel is located below the light blocking shaft.

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