CN210897086U

CN210897086U - Keyboard

Info

Publication number: CN210897086U
Application number: CN201921614962.0U
Authority: CN
Inventors: 朱曙光; 康刚伟
Original assignee: Jiangsu Transimage Technology Co Ltd
Current assignee: Jiangsu Transimage Technology Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-30
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a keyboard, including film circuit board, metal sheet, conducting layer and bottom, the film circuit board sets up on the metal sheet, and the conducting layer sets up between metal sheet and bottom for absorb the inside static that produces of keyboard. The conducting layer comprises conducting resin and a conducting film, the first side is pasted on the back of the metal plate, the second side is provided with the conducting film and used for conducting electricity perpendicular to the horizontal direction, the conducting film is a conducting carbon film or silver paste, and the conducting film is used for assisting the conducting resin in conducting electricity in other directions. The utility model discloses can release the inside static of keyboard fast, high-efficiently, protect the keyboard circuit.

Description

Keyboard

Technical Field

The utility model relates to a keyboard.

Background

The film circuit board in the traditional keyboard consists of a plurality of layers of PET films and circuits, and the film circuit board generally completely covers a metal bottom plate for the reasons of attractive appearance and the like. In the daily use process of the keyboard with the structure, after the static electricity generated in the keyboard reaches the limit, the electronic elements damaging the computer mainboard are released. Therefore, an electrostatic discharge structure is required to safely discharge static electricity inside the keyboard. The traditional keyboard has two static electricity releasing modes, one is to directly release static electricity on an exposed iron plate, and the other is to arrange a metal coating on a circuit board and the contact surface of a key and the circuit board to achieve the purpose of conducting static electricity. Due to the limitation of the first mode structural factor, the electrostatic discharge effect is poor in most cases. The patent with the application number of cn200620112406.x provides an anti-static keyboard, in order to provide the second way of releasing static electricity, the conductive material in the patent is disposed on the circuit film, the product structure is complex, the cost is high, and the possibility of damaging the motherboard is reduced.

Disclosure of Invention

Utility model purpose: to the above technical problem, the utility model aims at providing a keyboard structure of inside static of high-efficient, safety release keyboard.

The technical scheme is as follows: in order to realize the purpose, the utility model adopts the following technical scheme: comprises a film circuit board, a metal plate, a conductive layer and a bottom layer; the thin film circuit board is arranged on the metal plate; the conducting layer is arranged between the metal plate and the bottom layer and used for absorbing static electricity generated in the keyboard; the metal plate is used for bearing and connecting the keyboard keys.

Preferably, the conductive layer includes a conductive adhesive and a conductive film.

Preferably, the first side of the conductive adhesive is adhered to the back of the metal plate, and the second side of the conductive adhesive is provided with a conductive film for realizing the conduction perpendicular to the horizontal direction.

Preferably, the conductive film is a conductive carbon film or silver paste, and the conductive film is used for assisting the conductive adhesive to realize the conduction in other directions.

Preferably, the conductive layer completely covers the metal plate.

Preferably, the conductive layer has perforations.

Preferably, at least one side of the conducting layer through hole is exposed from the metal plate through hole, so that static electricity is absorbed and is prevented from contacting the thin film circuit board.

Preferably, one end of the metal plate is provided with a conductor component, the conductor component is connected with a grounding wire in a computer mainboard or a keyboard USB wire, and the conductor component is used for leading static electricity out of the keyboard.

Has the advantages that:

the utility model discloses owing to adopt the scheme of going up, effectively solved the problem that produces static and can not in time derive and damage the product on the keyboard, through the ESD test, the utility model discloses the keyboard antistatic backing is stronger, moreover the utility model discloses keyboard extensive applicability has improved keyboard product quality.

Drawings

FIG. 1 is a cross-sectional view of the keyboard of the present invention;

fig. 2 is a schematic structural diagram of the keyboard of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the keyboard structure of the present invention includes: the film circuit board 1, the metal sheet 2, the conducting layer 3, the scissors foot 4, the key cap 5, the elastomer 6 and the bottom layer 7. The film circuit board 1 is arranged on the metal plate 2. The conductive layer 3 is disposed between the metal plate 2 and the bottom layer 7, and is used for absorbing static electricity generated inside the keyboard. The metal plate 2 is used for bearing and connecting keyboard keys and comprises scissor feet 4, a keycap 5, an elastic body 6 and the like.

The conductive layer 3 includes a conductive paste 301 and a conductive film 302. The first side of the conductive adhesive 301 is adhered to the back surface of the metal plate 2, and the second side is provided with a conductive film 302. The conductive film 302 is a conductive carbon film or silver paste, and the conductive film is used for assisting the conductive adhesive to realize the conduction in other directions. The conductive adhesive is strong in conductivity and has viscosity, but due to the internal molecular structure of the conductive adhesive, the conductive adhesive can only realize vertical conduction. The conductive film has strong conductivity in all directions, but is not easy to attach to the surface of the metal plate. The conducting layer has the advantages that the conducting layer can be attached to the surface of the metal plate, the conducting layer is high in conductivity and small in thickness, and the overall thickness of the keyboard is not increased. Preferably, the conductive adhesive and the conductive film are arranged on the back surface of the metal plate in a printing mode.

The conductive layer 3 covers the metal plate completely or has perforations. At least one edge of the perforated conducting layer 3 is exposed from the perforated metal plate for absorbing static electricity. In specific implementation, when static electricity accumulation generated in the use process of the keyboard reaches a bearing limit, the static electricity is released to the space below the keycap and contacts the conducting layer at the perforated position, so that the static electricity is prevented from contacting the thin film circuit board. The static electricity absorbed to the conductive adhesive is transferred along the vertical direction, and is diffused towards other directions after reaching the conductive film, and the dispersed static electricity enters the metal plate along the conductive adhesive.

As shown in fig. 2, the key cap 5 is sequentially provided with a film circuit board 1, a metal plate 2, a conductive adhesive 301, a conductive film 302 and a bottom layer 7 from top to bottom. The bottom layer 7 is a waterproof plastic film, a keyboard shell, a backlight module and the like. When the backlight module is included, the backlight module is preferably waterproof.

As shown in fig. 2, a conductor member 8 is disposed at one end of the metal plate, the conductor member is connected to a ground line in a computer motherboard or a USB cable of a keyboard, and the conductor member is used for conducting static electricity out of the keyboard. In concrete implementation, when the utility model discloses when locating notebook computer keyboard, earthing device links to each other on conductor part and the computer motherboard, absorbs the static to the metal sheet and derives through conductor part, prevents that static from haring electronic component in the computer motherboard. When the utility model discloses when locating independent keyboard, USB line ground connection in conductor part and the keyboard absorbs the static to the metal sheet and derives the keyboard through conductor part.

Claims

1. A keyboard, comprising: the circuit board comprises a thin film circuit board (1), a metal plate (2), a conducting layer (3) and a bottom layer (7);

the thin film circuit board (1) is arranged on the metal plate (2);

the conducting layer (3) is arranged between the metal plate (2) and the bottom layer (7) and is used for absorbing static electricity generated inside the keyboard;

the metal plate (2) is used for bearing and connecting the keyboard keys.

2. A keyboard according to claim 1, wherein the conductive layer (3) comprises a conductive glue (301) and a conductive film (302).

3. The keyboard according to claim 2, wherein the conductive adhesive (301) is adhered to the back of the metal plate (2) on a first side and provided with a conductive film (302) on a second side for achieving electrical conduction perpendicular to the horizontal direction.

4. The keyboard of claim 2, wherein the conductive film (302) is a conductive carbon film or silver paste, and the conductive film is used for assisting the conductive paste to conduct electricity in other directions.

5. A keyboard according to claim 1, characterized in that the conductive layer (3) completely covers the metal plate.

6. A keyboard according to claim 1, characterized in that the conductive layer (3) has perforations.

7. The keyboard according to claim 6, wherein the conductive layer (3) is perforated with at least one side exposed from the metal plate perforation for absorbing static electricity to prevent the static electricity from contacting the thin film circuit board.

8. The keyboard of claim 1, wherein the metal plate is provided at one end with a conductor member (8) connected to a ground line in a computer motherboard or a keyboard USB cable, the conductor member being for conducting static electricity out of the keyboard.