CN112817456A

CN112817456A - Card type flat keyboard

Info

Publication number: CN112817456A
Application number: CN201911115983.2A
Authority: CN
Inventors: 肖宗琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2021-05-18

Abstract

The invention discloses a metal dome type flat keyboard which comprises a glass fiber substrate, a supporting plate and a protective sleeve, wherein a soft cloth sheet is adhered to the bottom surface of the glass fiber substrate, the supporting plate and the protective sleeve are sequentially adhered to the soft cloth sheet, a conductive thin film covers the top surface of the glass fiber substrate, a key PET film covers the top surface of the conductive thin film, metal dome sheets are distributed on the top surface of the key PET film according to the key arrangement, an upper cover is arranged on the glass fiber substrate in a covering mode, the key PET film and the conductive thin film are tightly pressed on the glass fiber substrate through the upper cover, the upper cover is provided with key holes arranged according to the key distribution of the key PET film, and key caps in clearance fit with the key holes.

Description

Card type flat keyboard

Technical Field

The invention relates to the technical field of intelligent electronic products, in particular to a dome-shaped flat keyboard.

Background

A Tablet Personal Computer (also called a laptop PC) is a small and portable Personal Computer, and uses a touch screen as a basic input device. It possesses a touch screen (also known as digitizer technology) that allows a user to work with a stylus or digitizer rather than a traditional keyboard or mouse. The user can input through built-in handwriting recognition, a soft keyboard, voice recognition or an external keyboard.

In order to facilitate input, an external keyboard is usually connected to the tablet computer for input, and most of the existing tablet computer keyboards adopt flexible film touch control, so that the touch performance is poor, and the service life is short.

Disclosure of Invention

The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.

The utility model provides a little card piece formula flat keyboard, including the fine base plate of glass, a supporting plate, the protective sheath, the bottom surface of the fine base plate of glass is bonded with soft cloth, a supporting plate, the protective sheath bonds in proper order on soft cloth, the top surface of the fine base plate of glass covers there is electrically conductive film, electrically conductive film's top surface covers there is button PET membrane, the top surface of button PET membrane distributes according to its button range has little card piece, the fine base plate upper cover of glass is equipped with the upper cover, the upper cover is with button PET membrane, electrically conductive film compresses tightly on the fine base plate of glass, the upper cover has the keyhole that sets up according to the button distribution of button PET membrane, install in the keyhole.

Furthermore, a silicone membrane is padded between the upper cover and the button PET membrane, and silicone buttons arranged according to the button distribution of the button PET membrane are formed on the silicone membrane.

Furthermore, a positioning groove is formed on the button PET film, and the snap dome is arranged in the positioning groove.

Furthermore, contact salient points are formed on the inner top of the snap dome.

Furthermore, a limit ring is formed on the upper edge of the key hole, and a convex block corresponding to the limit ring is formed on the lower edge of the key cap.

Furthermore, a pressing block for pressing the snap dome is formed in the center of the bottom of the keycap.

Furthermore, the top surface shaping of upper cover has the recess that adapts to the shape of panel computer, and in the side of panel computer inserted the recess, constitute triangle-shaped between protective sheath, backup pad, the fine base plate of glass, and the angle between protective sheath and the fine base plate of glass is 125.

Compared with the prior art, the invention has the following beneficial effects: the keyboard is novel in structure, adopts the snap dome structure, is long in service life and is rich in hand feeling.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is another schematic structural diagram of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a dome sheet type flat keyboard comprises a glass fiber substrate 1, a supporting plate 2 and a protective sleeve 3, wherein a soft cloth sheet 4 is bonded on the bottom surface of the glass fiber substrate 1, the supporting plate 2 and the protective sleeve 3 are sequentially bonded on the soft cloth sheet 4, a conductive thin film 5 covers the top surface of the glass fiber substrate 1, a button PET film 6 covers the top surface of the conductive thin film 5, dome sheets 7 are distributed on the top surface of the button PET film 6 according to the button arrangement, an upper cover 8 covers the glass fiber substrate 1, the button PET film 6 and the conductive thin film 5 are tightly pressed on the glass fiber substrate 1 by the upper cover 8, the upper cover 8 is provided with key holes 81 distributed according to the buttons of the button PET film 6, and key caps 9 in clearance fit with the key holes 81 are installed in the key holes.

Further, a silicone membrane 10 is padded between the upper cover 8 and the button PET film 6, and silicone buttons 101 arranged according to the button distribution of the button PET film 6 are formed on the silicone membrane 10.

Furthermore, a positioning groove 61 is formed on the button PET film 6, and the snap dome 7 is arranged in the positioning groove 61.

Further, contact bumps 71 are formed on the inner top of the snap dome 7.

Furthermore, a limiting ring 82 is formed on the upper edge of the key hole 81, and a projection 91 corresponding to the limiting ring is formed on the lower edge of the key cap 9.

Further, a pressing block 92 for pressing the snap dome 7 is formed at the center of the bottom of the key cap 9.

Further, the top surface shaping of upper cover 8 has the recess 81 that adapts to the shape of panel computer, and in the side of panel computer inserted recess 81, constitute triangle-shaped between protective sheath 3, backup pad 2, the fine base plate 1 of glass, and the angle between protective sheath 3 and the fine base plate 1 of glass is 125.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a little card piece formula flat keyboard, including the fine base plate of glass, a supporting plate, the protective sheath, a serial communication port, the bottom surface bonding of the fine base plate of glass has the soft cloth piece, a supporting plate, the protective sheath bonds in proper order on the soft cloth piece, the top surface of the fine base plate of glass covers there is electrically conductive film, electrically conductive film's top surface covers has button PET membrane, the top surface of button PET membrane arranges according to its button and distributes and have little card piece, the fine base plate upper cover of glass is equipped with the upper cover, the upper cover is with button PET membrane, electrically conductive film compresses tightly on the fine base plate of glass, the upper cover has the keyhole that sets up according to the button PET membrane's button.

2. The dome sheet is a flat keyboard according to claim 1, wherein a silicone membrane is padded between the upper cover and the button PET film, and silicone buttons arranged according to the button distribution of the button PET film are formed on the silicone membrane.

3. The dome of claim 1, wherein the key PET film is formed with a positioning groove, and the dome is mounted in the positioning groove.

4. A dome as claimed in claim 1, wherein the dome has contact bumps formed on its inner top.

5. The dome is a flat keyboard as claimed in claim 1, wherein the key hole is formed with a stopper ring at an upper edge thereof, and the key cap is formed with a protrusion corresponding to the stopper ring at a lower edge thereof.

6. A dome is a flat keyboard as claimed in claim 1 wherein the key cap has a central bottom portion formed with a press block for pressing the dome.

7. The dome is a tablet keyboard as claimed in claim 1, wherein the top surface of the top cover is formed with a groove adapted to the shape of the tablet computer, when the side of the tablet computer is inserted into the groove, the protective cover, the supporting plate and the glass fiber substrate form a triangle, and the angle between the protective cover and the glass fiber substrate is 125 °.