Self-generating wireless keyboard

Abstract

The utility model discloses a wireless keyboard capable of self-generating electricity. The wireless keyboard comprises a keyboard shell, a keycap, a keycap support, an elastic element, a piezoelectric wafer, a wafer support and an energy storage device. The center of the bottom of the keycap is provided with a square pillar, and the piezoelectric wafer is arranged below the square pillar through a wafer support. The elastic element is fixedly connected to the keyboard inner shell and located below the piezoelectric wafer, the elastic element is hollow, the bottom of the elastic element is open, and a contact is downwards arranged in the silica gel bowl; the energy storage device is arranged in the first containing cavity, the piezoelectric wafer is connected with the energy storage device through the spiral wire, the structure is simple, the size is small, and the energy conversion efficiency is high. A piezoelectric wafer is arranged below each key, when the keyboard is pressed, the piezoelectric wafers can be deformed to generate electric energy, mechanical energy generated by pressing the key caps is converted into electric energy, and the electric energy is stored to supply power to the wireless keyboard.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a wireless keyboard capable of generating electricity by itself. Background Art

[0002] With the popularization of computer technology, computers have become an indispensable tool in people's lives and work. As an important part of the computer, the keyboard undertakes most of the input tasks. According to statistics, under normal office conditions, workers type on the keyboard more than 5 million times a year. In this process, a large amount of mechanical energy is consumed, and almost all of this mechanical energy is wasted. Among the many types of keyboards, wireless keyboards have become the most popular one because they are no longer constrained by wires. However, the wireless keyboards on the market currently have the disadvantage of high power consumption, so the batteries need to be replaced frequently, and frequent battery replacement increases the cost of use for consumers, while discarded batteries pollute the environment.

[0003] The existing technology uses a power generation device designed outside the keyboard, which has a complex structure and circuit design. The external power generation device not only adds manufacturing steps, but also increases the manufacturing cost. Utility Model Content

[0004] The utility model aims to provide a wireless keyboard capable of generating electricity by itself, in view of the deficiencies in the prior art.

[0005] The technical solution of the utility model to solve the above problems is: a wireless keyboard capable of self-generating electricity, comprising a keyboard housing, a keycap, a keycap bracket, an elastic element, a piezoelectric chip, a chip bracket and an energy storage device;

[0006] The keyboard housing comprises a keyboard outer shell, a keyboard inner shell and a keyboard circuit board, a first cavity is provided between the keyboard outer shell and the keyboard inner shell, and the keyboard circuit board is arranged below the keyboard inner shell; a plurality of mounting grooves are provided on the keyboard outer shell, and the key caps are installed in the mounting grooves through key cap brackets, and an opening is provided on the keyboard inner shell below each mounting groove;

[0007] A square pillar is provided at the center of the bottom of the key cap, and the piezoelectric chip is arranged below the square pillar through a chip support;

[0008] The elastic element is fixedly connected to the inner shell of the keyboard and is located below the piezoelectric chip. The elastic element is hollow inside and has an open bottom. A contact point is arranged downward inside the elastic element.

[0009] The energy storage device is arranged in the first cavity, and the piezoelectric chip is connected to the energy storage device through a spiral wire.

[0010] Furthermore, the chip support includes two columns, which are respectively arranged on both sides of the opening, and the lower ends of the columns are fixedly connected to the keyboard inner shell, and the upper ends of the columns are fixedly connected to the piezoelectric chip.

[0011] Furthermore, the keycap bracket includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are cross-arranged, and a fixed frame is respectively provided on both sides of the bottom of the keycap, the lower end of the first connecting rod is rotatably connected to one of the columns, and the upper end is slidably connected to one of the fixed frames, the lower end of the second connecting rod is rotatably connected to the other column, and the upper end is slidably connected to the other fixed frame.

[0012] Furthermore, the elastic element is a silicone bowl.

[0013] Furthermore, the piezoelectric chip is connected to the energy storage device via a spiral conductor, a rectifier circuit and / or a voltage regulator circuit.

[0014] The utility model has beneficial effects:

[0015] The utility model provides a wireless keyboard capable of self-generating electricity, which has a simple and compact structure, a small volume and a high energy conversion efficiency. A piezoelectric chip is arranged under each key, and when the keyboard is pressed, the piezoelectric chip can be deformed to generate electricity, and the mechanical energy generated by pressing the key cap is converted into electrical energy and stored to power the wireless keyboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a state diagram of the key cap of the utility model when it is not pressed;

[0017] Figure 2 This is a state diagram of the key cap of the utility model when pressed;

[0018] In the figure: 1. keycap; 2. keyboard outer shell; 3. keyboard inner shell; 4. silicone bowl; 5. keyboard circuit board; 6. spiral wire; 7. energy storage device; 8. column; 9. piezoelectric chip; 10. square pillar; 11. fixing frame; 12. first connecting rod; 13. second connecting rod; 14. contact. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0020] As shown in the figure, a wireless keyboard capable of generating electricity by itself includes a keyboard housing, keycaps, a keycap bracket, a silicone bowl, a piezoelectric chip, a chip bracket and an energy storage device.

[0021] The keyboard housing comprises a keyboard outer shell, a keyboard inner shell and a keyboard circuit board, a first cavity is provided between the keyboard outer shell and the keyboard inner shell, and the keyboard circuit board is arranged below the keyboard inner shell. The keyboard outer shell is provided with a plurality of mounting grooves, the key caps are installed in the mounting grooves through key cap brackets, and an opening is provided on the keyboard inner shell below each mounting groove.

[0022] A square pillar is provided at the bottom center of the keycap, and the piezoelectric chip is arranged below the square pillar through a chip holder. The chip holder includes two columns, and the two columns are respectively arranged on both sides of the opening. The lower end of the column is fixedly connected to the inner shell of the keyboard, and the upper end is fixedly connected to the piezoelectric chip.

[0023] The silicone bowl is fixedly connected to the inner shell of the keyboard and is located below the piezoelectric chip. The inside of the silicone bowl is hollow and the bottom is open. Contacts are provided downward inside the silicone bowl. When the silicone bowl is pressed down, the contacts touch the keyboard circuit board to complete the keyboard command. After releasing the contacts, the silicone bowl resets upward and lifts up the piezoelectric chip and keycap.

[0024] The keycap bracket includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are cross-arranged, and a fixed frame is respectively provided on both sides of the bottom of the keycap. The lower end of the first connecting rod is rotatably connected to one of the columns, and the upper end is slidably connected to one of the fixed frames. The lower end of the second connecting rod is rotatably connected to the other column, and the upper end is slidably connected to the other fixed frame.

[0025] The energy storage device is arranged in the first cavity, and the piezoelectric chip is connected to the energy storage device through a spiral wire, a rectifier and / or a voltage regulator circuit. The energy storage device can supply power to the wireless keyboard. The spiral wire uses a micro wire as a way to transmit electric energy, which has low loss and good conductivity. The energy storage device is a rechargeable battery or an energy storage capacitor.

[0026] Working principle: The square pillar is pressed down by the keycap, and the square pillar squeezes the piezoelectric chip below. The piezoelectric chip generates electricity when squeezed, and then transmits the electricity to the energy storage device through the spiral wire, rectifier and / or voltage regulation circuit. The energy storage device stores the electricity, and the energy storage device provides electricity for the wireless keyboard. The piezoelectric chip is pressed down to touch the silicone bowl, and the silicone bowl is pressed down to touch the keyboard circuit board to complete the keyboard command. After releasing, it resets upward, and the square pillar and keycap return to their original position through the elastic restoring force of the silicone bowl.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A wireless keyboard capable of generating electricity on its own, characterized in that: It includes a keyboard housing, a key cap, a key cap bracket, an elastic element, a piezoelectric chip, a chip bracket and an energy storage device; The keyboard housing comprises a keyboard outer shell, a keyboard inner shell and a keyboard circuit board, a first cavity is provided between the keyboard outer shell and the keyboard inner shell, and the keyboard circuit board is arranged below the keyboard inner shell; a plurality of mounting grooves are provided on the keyboard outer shell, and the key caps are installed in the mounting grooves through key cap brackets, and an opening is provided on the keyboard inner shell below each mounting groove; A square pillar is provided at the center of the bottom of the key cap, and the piezoelectric chip is arranged below the square pillar through a chip support; The elastic element is fixedly connected to the inner shell of the keyboard and is located below the piezoelectric chip. The elastic element is hollow inside and has an open bottom. A contact point is arranged downward inside the elastic element. The energy storage device is arranged in the first cavity, and the piezoelectric chip is connected to the energy storage device through a spiral wire.

2. A wireless keyboard capable of self-generating electricity as claimed in claim 1, characterized in that: The chip support comprises two columns, which are respectively arranged on both sides of the opening, wherein the lower ends of the columns are fixedly connected to the keyboard inner shell, and the upper ends of the columns are fixedly connected to the piezoelectric chip.

3. A wireless keyboard capable of self-generating electricity as claimed in claim 2, characterized in that: The keycap bracket includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are cross-arranged, and a fixed frame is respectively provided on both sides of the bottom of the keycap. The lower end of the first connecting rod is rotatably connected to one of the columns, and the upper end is slidably connected to one of the fixed frames. The lower end of the second connecting rod is rotatably connected to the other column, and the upper end is slidably connected to the other fixed frame.

4. A wireless keyboard capable of self-generating electricity as claimed in claim 1, characterized in that: The elastic element is a silicone bowl.

5. A wireless keyboard capable of self-generating electricity as claimed in claim 1, characterized in that: The piezoelectric chip is connected to the energy storage device through a spiral conductor, a rectifier circuit and / or a voltage regulator circuit.

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