A split keyboard connected with a Type-C interface

Abstract

The utility model discloses a kind of Type-C interface connection type split keyboard, including left keyboard and right keyboard, the left keyboard and right keyboard all include MCU chip, the MCU chip connection end is connected with lamp module, communication module, key module, bluetooth module and memory module, the input end of the MCU chip is connected with battery module, the battery module end is connected with power supply chip and charging management module, the input end of the power supply chip is connected with USB circuit protection module, belong to split keyboard technical field.This Type-C interface connection type split keyboard, it is Type-C interface connection between two independent keyboards, compared with the interface of traditional split keyboard, the symmetrical design of Type-C interface is more convenient to use, also can reduce the failure rate of equipment, prolong service life, split keyboard has the characteristics of small size, portable, there are two connection modes of wired and bluetooth, also can be connected with mobile phone, function is more rich, can be used in multiple scenes.

Description

Technical Field

[0001] This utility model relates to the field of split keyboard technology, specifically a Type-C interface type split keyboard. Background Technology

[0002] With the development of information technology and the popularization of computers, keyboards, as an indispensable tool for using computers, are being used more and more frequently in various scenarios of work and life. At the same time, due to the different usage habits of each person, traditional all-in-one keyboards can no longer meet the needs of keyboard use. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a Type-C interface-connected split keyboard, which solves the aforementioned problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a Type-C interface-connected split keyboard, including a left keyboard and a right keyboard, both of which include an MCU chip. The MCU chip is connected to a light module, a communication module, a key module, a Bluetooth module, and a memory module. The input end of the MCU chip is connected to a battery module. The battery module is connected to a power chip and a charging management module. The input end of the power chip is connected to a USB circuit protection module.

[0005] The USB circuit protection module includes a USB signal protection circuit and a USB power protection circuit. The USB signal protection circuit is located between the MCU chip and the power input, and the USB power protection circuit is located between the power chip and the power input.

[0006] The memory module includes a data storage chip.

[0007] Preferably, the MCU chip is model RP2040.

[0008] Preferably, the charging management module is model CN3162 and the power chip is model AMS1117.

[0009] Preferably, the communication module is connected to the MCU chip via a 3.3V serial port, and the communication module is connected to the Type-C via a 5V serial port.

[0010] Preferably, the model of the USB signal protection circuit is set to TPD4E05U06DQAR.

[0011] Preferably, the data storage chip is model W25Q128JVSIQ.

[0012] Preferably, the MCU chip uses I 2 The C protocol connects to the Bluetooth module.

[0013] Preferably, the communication module is connected to the output terminal of the MCU chip, enabling the MCU chip to output through the communication module.

[0014] This invention provides a Type-C interface-connected split keyboard. Compared with the prior art, it has the following advantages:

[0015] This Type-C interface-connected split keyboard uses a Type-C interface to connect two independent keyboards. Compared with traditional split keyboard interfaces, the symmetrical design of the Type-C interface is more convenient to use, can reduce the failure rate of the device, and extend its service life. The split keyboard is small and portable, and has both wired and Bluetooth connection methods. It can also connect to mobile phones, making it more functional and usable in multiple scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a system control block diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the circuit structure of this utility model;

[0019] Figure 4 This is a circuit diagram of the power input and USB circuit protection module of this utility model;

[0020] Figure 5 This is a circuit diagram of the MCU chip of this utility model;

[0021] Figure 6 This is a circuit diagram of the button module of this utility model;

[0022] Figure 7 This is the circuit diagram of the lamp module of this utility model;

[0023] Figure 8 This is a circuit diagram of the communication module of this utility model;

[0024] Figure 9 This is a circuit diagram of the memory module of this utility model;

[0025] Figure 10 This is a circuit diagram of the Bluetooth module of this utility model;

[0026] Figure 11 This is a circuit diagram of the charging module of this utility model.

[0027] In the diagram: 1. Left keyboard; 2. Right keyboard; 3. MCU chip; 4. LED module; 5. Communication module; 6. Button module; 7. Bluetooth module; 8. USB circuit protection module; 9. Charging management module; 10. Battery module; 11. Power chip; 12. Memory module. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-11 This utility model provides a technical solution: a Type-C interface-connected split keyboard, including a left keyboard 1 and a right keyboard 2. Both the left keyboard 1 and the right keyboard 2 include an MCU chip 3, the model of which is RP2040. The MCU chip 3 controls the entire system. The connection end of the MCU chip 3 is connected to an LED module 4, a communication module 5, a key module 6, a Bluetooth module 7, and a memory module 12. The MCU chip 3 communicates via I... 2 The C protocol is connected to the Bluetooth module 7. The communication module 5 is connected to the MCU chip 3 through a 3.3V serial port. The communication module 5 is also connected to the Type-C port through a 5V serial port. The communication module 5 is connected to the output terminal of the MCU chip 3, enabling the MCU chip 3 to output through the communication module 5. The input terminal of the MCU chip 3 is connected to the battery module 10. The battery module 10 is connected to the power chip 11 and the charging management module 9. The charging management module 9 is model CN3162, and the power chip 11 is model AMS1117. The input terminal of the power chip 11 is connected to the USB circuit protection module 8.

[0030] The USB circuit protection module 8 includes a USB signal protection circuit and a USB power protection circuit. The USB signal protection circuit is located between the MCU chip 3 and the power input, and the USB power protection circuit is located between the power chip 11 and the power input. The model of the USB signal protection circuit is TPD4E05U06DQAR. The USB signal protection circuit can protect the electrical signals transmitted by the USB interface, and the USB power protection circuit can protect the power chip 11 when the power input circuit is 5V.

[0031] The memory module 12 includes a data storage chip, model number W25Q128JVSIQ, which is capable of storing data for controlling the lights and keyboard.

[0032] When connected directly to a computer via the Type-C interface, the input 5V voltage passes through simple filtering and protection devices before entering the CN3162 charging management module 9. The charging management module 9 controls the charging and discharging of the battery module 10. Two LEDs in the charging management module 9 indicate the charging status, making it easy to determine the keyboard's charging progress. When there is no external power input, the battery begins to discharge. After passing through the MD5133 voltage regulator chip, the battery outputs 3.3V to power the entire keyboard circuitry. Simultaneously, the 5V voltage entering the circuit to charge the battery also powers the entire keyboard circuitry. When the 5V power input circuit first passes through a USB power protection circuit, it reaches the AMS1117 power chip 11. The power voltage processed by the power chip 11 is then adjusted from 5V to 1.3V. The V is converted to 3.3V and output to MCU chip 3 to meet the voltage requirements for normal operation of MCU chip 3. There is also a TPD4E05U06DQAR chip between the power input and MCU chip 3 to protect the USB signal in the circuit and ensure the normal connection between MCU and external circuit. In the whole circuit, the 5V power supply also needs to directly power the lamp module 4. At the same time, the MCU chip 3 controls the lighting mode and adjusts various lighting modes. The MCU chip 3 is connected to an external W25Q128JVSIQ data storage chip for storing data. The MCU chip 3 can control the function of the button module 6. The MCU chip 3 stores the content information corresponding to the button with different position numbers. The keyboard input function can be realized through the linkage between button module 6 and MCU chip 3.

[0033] This utility model offers both Bluetooth and wired connection options. The MCU chip 3 connects via I... 2 The Type-C protocol connects to the Bluetooth module 7, both powered by 3.3V. When an external power source is available, the MCU prioritizes the wired connection, and the Bluetooth module 7 does not operate. When no external power source is available, the MCU will activate the Bluetooth module 7. This application changes the connection method with other devices from wired to Bluetooth. When the two separate left keyboards 1 and right keyboards 2 are connected via the Type-C interface, the 3.3V serial port voltage output from the MCU will be converted to 5V serial port voltage through the communication module 5 and input to the other keyboard. The power is provided by an external circuit. The left and right keyboards have the same circuit structure. When no external power source is available, the battery and Bluetooth module 7 will enter the working state, and the keyboard will switch to Bluetooth mode.

[0034] The two independent keyboards are connected via a Type-C interface. Compared with traditional split keyboard interfaces, the symmetrical design of the Type-C interface is more convenient to use, can reduce the failure rate of the device, and extend its service life. The split keyboard is small and portable, and has both wired and Bluetooth connection methods. It can also be connected to a mobile phone, making it more functional and usable in multiple scenarios.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A Type-C interface-connected split keyboard, characterized in that: It includes a left keyboard (1) and a right keyboard (2). Both the left keyboard (1) and the right keyboard (2) include an MCU chip (3). The connection end of the MCU chip (3) is connected to a light module (4), a communication module (5), a key module (6), a Bluetooth module (7) and a memory module (12). The input end of the MCU chip (3) is connected to a battery module (10). The end of the battery module (10) is connected to a power chip (11) and a charging management module (9). The input end of the power chip (11) is connected to a USB circuit protection module (8). The USB circuit protection module (8) includes a USB signal protection circuit and a USB power protection circuit. The USB signal protection circuit is located between the MCU chip (3) and the power input, and the USB power protection circuit is located between the power chip (11) and the power input. The memory module (12) includes a data storage chip.

2. A Type-C interface-connected split keyboard according to claim 1, characterized in that: The communication module (5) is connected to the MCU chip (3) via a 3.3V serial port, and the communication module (5) is connected to the Type-C via a 5V serial port.

3. A Type-C interface-connected split keyboard according to claim 2, characterized in that: The MCU chip (3) is connected via I 2 The C protocol is connected to the Bluetooth module (7).

4. A Type-C interface-connected split keyboard according to claim 2, characterized in that: The communication module (5) is connected to the output terminal of the MCU chip (3).

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