CN220401735U - Keyboard button antistatic circuit and mechanical keyboard - Google Patents

Abstract

The utility model discloses a keyboard key antistatic circuit and a mechanical keyboard, wherein the keyboard key antistatic circuit comprises a high-level output acquisition module, a control chip and a plurality of keys; the control chip comprises a plurality of shift communication interfaces and a plurality of high-level output interfaces, the plurality of high-level output interfaces are respectively and singly connected with the plurality of keys, and the high-level output acquisition module is connected with the plurality of keys and is used for acquiring the high level of the corresponding keys and converting the high level into effective key values. Through the three shift communication interfaces that control chip was equipped with, only need external MCU for the model that three shift communication interfaces correspond, just can open the high level output interfaces of control chip to provide high level signal for every high level output interface connected button, high level output collection module will gather the high level of corresponding row and change into effective button value when the button is pressed and is switched on. In addition, the diodes can prevent mutual crosstalk between signals and effectively prevent ghost keys.

Description

Keyboard button antistatic circuit and mechanical keyboard

Technical Field

The utility model relates to a keyboard, in particular to an antistatic circuit for keys of a keyboard and a mechanical keyboard.

Background

Because the number of keys of the mechanical keyboard is large, the number of pins of the chip to be used is large, so that the expansion function of the product is limited because of the lack of the pins, more importantly, because of the excessive pins, static electricity can enter the chip from the pins, and when the static electricity resistance of the chip is weak, the chip is easy to work abnormally.

Therefore, there is a need to design a technology for reducing the use of chip pins and further improving the antistatic capability of the chip.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provides an antistatic circuit for a keyboard key and a mechanical keyboard, and aims to reduce the use of chip pins and improve the antistatic capability of a chip.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

in one aspect, the utility model provides an antistatic circuit for keyboard keys, which comprises a high-level output acquisition module, a control chip and a plurality of keys; the control chip comprises a plurality of shift communication interfaces and a plurality of high-level output interfaces, the high-level output interfaces are respectively and singly connected with the keys, and the high-level output acquisition module is connected with the keys and is used for acquiring high levels corresponding to the keys and converting the high levels into effective key values.

The further technical scheme is as follows: the plurality of shift communication interfaces comprise a first chip pin, a second chip pin and a third chip pin.

The further technical scheme is as follows: the first pin of the chip is a D I N pin.

The further technical scheme is as follows: and the second pin of the chip is an LCK pin.

The further technical scheme is as follows: and the third pin of the chip is a BK pin.

The further technical scheme is as follows: the model adopted by the main control chip is RY2600.

The further technical scheme is as follows: the high-voltage power supply also comprises a diode, wherein the anode of the diode is connected with the keyboard, and the cathode of the diode is connected with the high-level output acquisition module.

The further technical scheme is as follows: the diode is 1N4148.

In another aspect, the present utility model provides a mechanical keyboard, including an antistatic circuit for a keyboard key as described above.

Compared with the prior art, the utility model has the beneficial effects that: through the three shift communication interfaces that control chip was equipped with, only need external MCU for the model that three shift communication interfaces correspond, just can open the high level output interfaces of control chip to provide high level signal for every high level output interface connected button, high level output collection module will gather the high level of corresponding row and change into effective button value when the button is pressed and is switched on. In addition, the positive pole of diode is connected with the keyboard, the negative pole of diode is connected with high level output collection module, can prevent mutual crosstalk between the signal, effectually prevents the ghost key.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the present utility model so that the same may be more clearly understood, as well as to provide a better understanding of the present utility model with reference to the following detailed description of the preferred embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an antistatic circuit for a keyboard key according to an embodiment of the present utility model.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

The embodiment of the utility model provides an antistatic circuit for keyboard keys, which comprises a high-level output acquisition module, a control chip and a plurality of keys; the control chip comprises a plurality of shift communication interfaces and a plurality of high-level output interfaces, wherein the plurality of shift communication interfaces comprise a first pin of the chip, a second pin of the chip and a third pin of the chip, the plurality of high-level output interfaces are respectively and singly connected with a plurality of keys, and the high-level output acquisition module is connected with the plurality of keys and is used for acquiring the high level of the corresponding keys and converting the high level into effective key values.

In this embodiment, as shown in fig. 1, four keys are illustrated in fig. 1, namely SW5, SW6, SW7 and SW8, R0 is a high-level output acquisition module, the model adopted by the main control chip is RY2600, the first pin of the chip is a DIN pin, the second pin of the chip is an LCK pin, and the third pin of the chip is a BK pin. The high-level output interfaces are an OUT0 pin, an OUT1 pin, an OUT2 pin and an OUT3 pin respectively, wherein the OUT0 pin is connected with the SW5 through CD0, the OUT1 pin is connected with the SW6 through CD1, the OUT2 pin is connected with the SW7 through CD2, and the OUT3 pin is connected with the SW8 through CD 3.

Through the three shift communication interfaces that control chip was equipped with, only need external MCU for the model that three shift communication interfaces correspond, just can open the high level output interfaces of control chip to provide high level signal for every high level output interface connected button, high level output collection module will gather the high level of corresponding row and change into effective button value when the button is pressed and is switched on.

Preferably, the model used for the main control chip is RY2600. Of course, in other embodiments, a master chip with similar functionality to the RY2600 model may be used.

Further, the high-voltage power supply also comprises a diode, wherein the anode of the diode is connected with the keyboard, and the cathode of the diode is connected with the high-level output acquisition module.

As shown in fig. 1, in the present embodiment, the anode of the diode D5 is connected to one end of the SW5, the other end of the SW5 is connected to the OUT0 pin through CD0, and the cathode of the diode D5 is connected to R0; the positive electrode of the diode D6 is connected with one end of the SW6, the other end of the SW6 is connected with the OUT1 pin through the CD1, and the negative electrode of the diode D6 is connected with the R0; the positive electrode of the diode D7 is connected with one end of the SW7, the other end of the SW7 is connected with the OUT2 pin through the CD2, and the negative electrode of the diode D7 is connected with the R0; the positive pole of diode D8 is connected with one end of SW8, and the other end of SW8 is connected with OUT3 pin through CD3, and the negative pole of diode D8 is connected with R0. The model numbers of the diode D5, the diode D6, the diode D7 and the diode D8 are all 1N4148.

Through the diode D5, the diode D6, the diode D7 and the diode D8, mutual crosstalk between signals can be prevented, and ghost keys can be effectively prevented.

The embodiment of the utility model also provides a mechanical keyboard, which comprises the keyboard key antistatic circuit. It should be noted that, the other structures of the mechanical keyboard except the above-mentioned anti-static circuit for keys may be the same as those of the common mechanical keyboard in the prior art, and the structures thereof are well known to those skilled in the art and will not be described herein.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (9)

1. The keyboard key antistatic circuit is characterized by comprising a high-level output acquisition module, a control chip and a plurality of keys; the control chip comprises a plurality of shift communication interfaces and a plurality of high-level output interfaces, the high-level output interfaces are respectively and singly connected with the keys, and the high-level output acquisition module is connected with the keys and is used for acquiring high levels corresponding to the keys and converting the high levels into effective key values.

2. The keyboard key antistatic circuit of claim 1, wherein the plurality of shift communication interfaces comprises a chip first pin, a chip second pin, and a chip third pin.

3. The antistatic circuit of claim 2, wherein the first pin of the chip is a DIN pin.

4. The anti-static circuit of a keyboard key according to claim 2, wherein the second pin of the chip is an LCK pin.

5. The keyboard key antistatic circuit of claim 2, wherein the third pin of the chip is a BK pin.

6. The antistatic circuit of claim 1, wherein the control chip is of the type RY2600.

7. The keyboard key antistatic circuit of claim 1, further comprising a diode, wherein an anode of the diode is connected to the keyboard, and a cathode of the diode is connected to the high-level output acquisition module.

8. The antistatic circuit of claim 7, wherein the diode is 1N4148.

9. A mechanical keyboard comprising a keyboard key antistatic circuit according to any one of claims 1-8.