CN214670489U

CN214670489U - Novel Bluetooth keyboard

Info

Publication number: CN214670489U
Application number: CN202120141995.9U
Authority: CN
Inventors: 李凯; 张想明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-11-09
Anticipated expiration: 2031-01-19

Abstract

The utility model belongs to the technical field of keyboards and discloses a novel Bluetooth keyboard.A keyboard body is embedded with a Type-C interface, and a lithium battery and a control mainboard are fixed inside the keyboard body through screws; the keyboard body is inside to be equipped with bluetooth signal device and reverse charging device through the screw fixation, and bluetooth signal device and reverse charging device all are connected with the control mainboard through interconnecting link and lithium cell, and the positive upper end of keyboard main part is inlayed and is equipped with a plurality of pilot lamps, and the pilot lamp passes through interconnecting link and is connected with the control mainboard. The control state of the keyboard can be displayed through the indicator lamp. The utility model discloses a reverse charging device and Type-C interface can realize wired reverse charging function through the bluetooth signal device for cell-phone or other mobile device power supplies through the data line, have increased the functional diversity of keyboard on original keyboard function basis, and the practicality is high.

Description

Novel Bluetooth keyboard

Technical Field

The utility model belongs to the technical field of the keyboard, especially, relate to a novel bluetooth keyboard.

Background

At present: along with the development of human science and technology, computers are becoming essential production tools in people's daily life. The keyboard is used as an input tool, and is usually used with a computer, and can also be used with other terminals such as a mobile phone. Besides full-size keyboards, keyboards also include various types such as numeric keyboards and ergonomic keyboards. In addition, the keyboard is classified into a mechanical keyboard, a membrane keyboard, and the like.

The existing mechanical keyboard can only realize the independent input function generally, and the function is single.

Through the above analysis, the problems and defects of the prior art are as follows:

the existing mechanical keyboard or common scissor-foot keyboard and membrane keyboard can only realize single input function. Neotype bluetooth keyboard makes some portable keyboards to increase new functions simultaneously, is convenient for give often going on business, solves the problem of emergency equipment continuation of the journey. For example: certain panel computer keyboard protective housing increases the function of charging of anti-charging, provides stable emergency power supply for panel, cell-phone, earphone, and other needs emergent electronic equipment.

The difficulty in solving the above problems and defects is:

1. because the USB communication signal of the product, the input of the power supply and the output interface of the reverse charging power supply are all finished by one port, the switching coordination work between the USB communication input signal and the output charging protocol needs to be solved;

2. current flowing back into the battery device when reverse output charging is required to be prevented;

3. when an external power supply is input, the current of the battery is forbidden to flow back through the reverse charging circuit, and the charging current of the battery is only allowed to pass through the charging control IC, so that the reliable service life and the safety of the battery are ensured.

The significance of solving the problems and the defects is as follows:

solve mobile office such as video conferencing, recreation occasion etc. emergent charging when the mobile device electric quantity is not enough, solve some products and need external power supply's limitation, can also provide the power when making the product can be connected the input with the mobile device bluetooth, realize the diversification of product function. The product function has certain convenience and place simplicity and convenience.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a novel bluetooth keyboard.

The utility model discloses a realize like this, a novel bluetooth keyboard is provided with:

a keyboard body;

the keyboard body is only provided with one Type-C interface, and one Type-C interface can be used for charging the keyboard body; the keyboard body is internally fixed with a lithium battery and a control mainboard through screws, and the keyboard can be used for reversely charging other electronic equipment, so that the effect of an emergency power supply is achieved.

The keyboard body is inside to be fixed with bluetooth signal device and reverse charging device, bluetooth signal device and reverse charging device all are connected with lithium cell and control mainboard through interconnecting link.

Furthermore, a plurality of indicator lamps are embedded at the upper end of the front surface of the keyboard body and are connected with the control main board through connecting circuits. The control state of the keyboard can be displayed through the indicator lamp.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

the utility model discloses a reverse charging device and Type-C interface can be for cell-phone or other mobile device power supplies through the data line, need not other unnecessary interfaces. Can realize the process that the bluetooth used also can guarantee normal function of charging through wired reverse charging device, increase the functional diversity of keyboard on original keyboard function basis, the practicality is high. And unnecessary purchasing of some charging equipment is reduced in response to the environmental protection work of the country.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the novel bluetooth keyboard provided by the embodiment of the present invention.

Fig. 2 is an internal structure schematic diagram of the novel bluetooth keyboard provided by the embodiment of the present invention.

Fig. 3 is a schematic diagram of a charging circuit connection of the bluetooth keyboard provided by the embodiment of the present invention.

Fig. 4 is a schematic diagram of a power output circuit provided by an embodiment of the present invention.

Fig. 5 is a schematic circuit diagram of a reverse charging protocol and USB communication signal switching device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a novel bluetooth keyboard, it is right to combine the figure below the utility model discloses do detailed description.

As shown in fig. 1 and 2, a Type-C interface 2 is embedded in a keyboard body 1 of the novel bluetooth keyboard provided by the embodiment of the present invention, and a lithium battery and a control motherboard are fixed inside the keyboard body; keyboard body 1 inside is fixed with bluetooth signal device and reverse charging device, and bluetooth signal device and reverse charging device all are connected with lithium cell and control mainboard through interconnecting link.

The upper end of the front surface of the keyboard body 1 is embedded with a plurality of indicating lamps 3 which are connected with the control mainboard through connecting circuits. The control state of the keyboard can be displayed through the indicator lamp.

As shown in fig. 3, 4 and 5, U7 is a charging IC for charging a BT1 lithium ion battery;

u8 is step-up IC, and the effect is to step up 3.7V of lithium ion battery to 5V output and supplies equipment such as cell-phone flat panel power supply, has conversion efficiency height, does not have characteristics such as backward flow electric current. The function of non-reverse-flow current is to prevent the influence on the service life of the battery caused by the reverse flow of the IC into the lithium battery when the external power supply is input

U9 is a USB dual channel switch IC.

U10 is a charging identification IC supporting a multi-mode charging protocol, comprising: the Divider1/Divider2/Divider3 charging protocol (dedicated to apples); d +/D-is set to be in a 1.2V mode (special for three stars); BC1.2 DCP and CTIS YD/T1591-.

A network port:

the DC _ OUT is connected to the MCU control pin and is used for controlling the output of the boost voltage;

W-Charger +/W-Charger-is the input interface of the wireless charging module;

the LED _5V is connected to the MCU and used for detecting an external power input pin;

and IND is a charge detection pin.

The utility model discloses a circuit theory of operation:

1. reverse charge state not turned on: DC _ OUT low level, when the USB5V has an external power supply 5V input, Q8 is turned on, the MCU detects that the LED _5V is high level and does not allow reverse charging to turn on the DC _ OUT low level, the D +/D-signal of U9 is connected to HSD1+/HSD1-, and the normal USB2.0 keyboard connection state is adopted

2. No computer is plugged in or no external power input is available: LED _5V is low level, allowing reverse charging to be turned on;

when reverse charging is turned on, DC _ OUT is high, Q8 is not conducting, and at this time, LED _5V is low even though USB5V is high;

the high level of DC _ OUT is started by a delay network consisting of R14/R38/C34/D87 to start U8, and when U8 is started, 5V is output to a USB interface;

when the DC _ OUT is in a high level, a D +/D-signal of the U9 is connected to HSD2+/HSD2-, at the moment, the U10 plays a role, charging equipment is identified through the D +/D-, and once the handshake is successful, the equipment is charged according to corresponding current of the equipment.

3. When the USB has no power supply input, when the wireless charging W-Charger +/W-Charger-input port has power supply, one path of the power supply supplies charging power supply to the battery through D84, and the other path of the power supply supplies power supply to the MCU through D85, at the moment, the LED _5V is at low level, the IND is at low level, and the MCU works in a full-speed mode;

when only the battery supplies power, the LED _5V is at a low level, the IND is at a high level, and the MCU works in a low power consumption mode;

in the USB input mode, LED _5V is high level, and the MCU works in the full-speed mode.

The utility model discloses a theory of operation is:

the utility model discloses a reverse charging device and Type-C interface 2 can realize the bluetooth through the bluetooth device and connect input function for cell-phone or other mobile device power supplies through the data line, have increased the functional diversity of keyboard on original keyboard function basis, and the practicality is high.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. The utility model provides a novel bluetooth keyboard, its characterized in that, novel bluetooth keyboard is provided with:

a keyboard body;

the keyboard body is embedded with a Type-C interface;

a lithium battery and a control main board are fixed inside the keyboard body through screws;

2. The novel Bluetooth keyboard as claimed in claim 1, wherein a plurality of indicator lights are embedded in the upper end of the front surface of the keyboard body, and the indicator lights are connected with the control main board through connecting lines.

3. The novel bluetooth keyboard of claim 1, wherein the Type-C interface is an interface for charging the keyboard body.