CN202720583U

CN202720583U - Key touch keyboard

Info

Publication number: CN202720583U
Application number: CN 201220359175
Authority: CN
Inventors: 蔡火炉
Original assignee: Sunrex Technology Corp
Current assignee: Sunrex Technology Corp
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2013-02-06
Anticipated expiration: 2022-07-23

Abstract

The utility model discloses a key touch keyboard comprising a plurality of keycaps, a locating frame base, a thin diaphragm, a capacitor-type circuit board and an aluminum plate. Each keycap is a pressing element, the locating frame base is a keyboard framework structure always being in a rectangular grid shape, and the locating frame base is composed by connecting a plurality of first frameworks and a plurality of second frameworks. Each keycap is in pivot connected with the top face of the locating frame in a corresponding mode. A plurality of arc-shaped elastic piece bodies are correspondingly arranged on the thin diaphragm, and the top face of each elastic piece body correspondingly abuts against a pressing column of each keycap. The capacitor-type circuit board is a capacitive sensing touch panel, arranged on the bottom face of the thin diaphragm, and composed of a first conductor layer, a second conductor layer and a plurality of conducting points. The plurality of the conducting points are correspondingly arranged on the pressing columns of the keycaps and on the bottom face of the elastic piece bodies. Therefore, the keyboard has the advantage of achieving elastic key pressing and distant sensing touch at the same time.

Description

Key touch keyboard

Technical Field

The present invention relates to a keyboard, and more particularly to a keyboard device with pressing and touch functions.

Background

In the age of advanced development of computer technology and rapid popularization of information transmission, related input devices of computers may be keyboards and touch panels, touch panels in the market at present may be classified into resistive, Capacitive, ultrasonic, optical (infrared) and the like according to the sensing principle, and Capacitive touch panels may be classified into Surface Capacitive (Surface Capacitive) touch panels and Projected Capacitive (Projected Capacitive) touch panels. The operation principle of the projected capacitive touch panel is mainly that capacitance change formed by contact between an ITO (indium tin oxide) transparent electrode on the touch panel and a human finger or a touch object is converted into coordinate data which can be interpreted by an operating system after operation of a control IC. Generally, in a single finger or single point touch, an X axis and a Y axis respectively generate a capacitance effect to induce a current, so that the coordinate position of the touch can be obtained through the intersection of the X axis and the Y axis.

The projected capacitive touch panel is applied to a notebook computer in the prior art, and is generally provided with a touch pad, and the touch pad in the prior art is usually installed at a specific position on the right side or the front side of a keyboard, so that a user can operate the computer with fingers. However, because the touch pad of the prior art has a small area, it is inconvenient to use it to operate the computer, and the separate design thereof also occupies a large space. Therefore, the keyboard of the notebook computer in the prior art is not large, and although the area occupied by a small-area touch pad is small, the touch pad still occupies a certain proportion of the area of the keyboard, which affects and increases the volume of the whole notebook computer, thereby causing inconvenience in use. In addition, the input device of the touch panel in the prior art is not provided with an elastic pressing structure of the traditional keyboard because of the flat shape, so that the input device causes inconvenience in use for the traditional user and needs to be improved.

In addition, the keys of the current notebook computer keyboard are all thin key structures, which mainly have a bridging support structure assembled between the key caps and the bottom plate of the keys, and although the thin bridging keyboard structures in the prior art have the advantages of ultra-thin volume, light weight and accurate operation, the bridging support structure has a complex assembly structure and is difficult to assemble, i.e., the assembly process is still too complicated and the defects of difficult assembly and alignment are obvious, so that the improvement is necessary.

In view of the above, the present inventors have made practical experience in manufacturing and designing related products of computer keyboards for many years, and have studied and improved the related products, and made and tested many times physical samples, so as to improve the above-mentioned disadvantages of the computer keyboards in the prior art, and finally completed the present invention.

SUMMERY OF THE UTILITY MODEL

The utility model discloses very little and lack the user to the area of prior art touch-control board and press the shortcoming that the keyboard finger feels the touch force way, the to-be-solved technical problem of the utility model is to provide a key touch keyboard who integrates touch keyboard and key keyboard's service efficiency.

The utility model discloses a key touch keyboard, which comprises a plurality of keycaps, a positioning frame seat, a film sheet, a capacitance type circuit board and an aluminum plate; wherein,

the key cap is a pressing element, a pressing column is convexly arranged on the central bottom surface of the key cap, and pivoting grooves are correspondingly arranged on the four end sides of the bottom surface of the key cap;

the positioning frame seat is a rectangular grid-shaped keyboard frame structure and is formed by connecting a plurality of first frames and second frames which are vertically and horizontally corresponding to each other, wherein the front end edge and the rear end edge of each first frame are respectively provided with a cylindrical pivot rod in a protruding mode, the other end of each pivot rod is fixedly connected to the side face of each second frame, and each pivot rod is correspondingly pivoted with the corresponding pivoting groove on the bottom face of each keycap;

the film sheet is a film sheet body pressed on the bottom surface of the positioning frame seat, a plurality of circular arc-shaped elastic sheet bodies are correspondingly arranged on the film sheet, and the top surfaces of the elastic sheet bodies correspondingly prop against the pressing columns of the keycaps;

the capacitive circuit board is a touch panel with capacitance induction, is pressed and assembled on the bottom surface of the thin film sheet and comprises a first conductor layer, a second conductor layer and a plurality of conduction points, and the conduction points are correspondingly arranged on the pressing columns of the keycaps and the bottom surface of the elastic sheet body of the thin film sheet;

and

the aluminum plate is a plate body which is arranged on the bottom surface of the capacitance type circuit board in a pressing and assembling mode.

Preferably, each keycap is embedded and pivoted to be positioned at a position corresponding to the top surface of the positioning frame seat.

Preferably, the bottom surface of the elastic sheet body is coated with a conductive layer, and the thin film sheet is provided with a plurality of hollow through holes.

Preferably, the touch control device further comprises a switch unit with the function of switching the selection key mode, a signal detection unit for identifying a coordinate position signal pressed by a word key and a coordinate position change signal of the capacitive sensing area, and a signal transmission unit for receiving or transmitting the word key pressing signal or the gesture air-space sensing touch signal; wherein, the signal detection unit is electrically connected with the capacitance type circuit board; the switch unit is electrically connected with the signal detection unit; the signal transmission unit is electrically connected to the signal detection unit and is connected to a computer host.

Compared with the prior art, the utility model, have the function that sensing word key pressing signal and response finger spaced displacement touch-control signal by a capacitanc circuit board to utilize a switch unit's switch key in order to select the button mode or to separate spaced response touch-control mode, have keyboard elasticity button and separate the dual beneficial effect of spaced response touch-control keyboard.

With reference to the following detailed description of the embodiments, the technical features and the operational effects of the present invention will be understood.

Drawings

Fig. 1 is an exploded perspective view of a single key of a key touch keyboard according to the present invention.

Fig. 2 is a schematic diagram of the capacitive circuit board structure of the key touch keyboard of the present invention, which shows the first and second conductive layers and the key conducting point structure of the capacitive circuit board.

Fig. 3 is a schematic sectional view of a partial assembly structure of the key touch keyboard of the present invention, which shows a scheme for pressing a key cap by a user.

FIG. 4 is a schematic cross-sectional view of a portion of the enlarged structure of FIG. 3, showing the keyboard in an un-depressed configuration.

Fig. 5 is a schematic cross-sectional view of the enlarged partial structure of fig. 3, which shows that after a user presses the key cap, the elastic sheet body can touch the conducting point downwards, so as to provide a key pressing signal of the keyboard.

Fig. 6 is a block diagram of the system of the key touch keyboard of the present invention.

Description of the reference numerals of the main elements

10.. key touch keyboard

Keycap 20

Pressing post

202. pivot groove

30

A first frame

A second frame

303. pivot rod

A pellicle membrane

401. elastic sheet body

401 a

Through hole 402

Capacitive circuit board

A first conductor layer

A second conductor layer

Conduction point of 50C

Aluminum plate

A signal detection unit

80.

90.

A

Detailed Description

The present invention relates to a key touch keyboard, and firstly please refer to fig. 1 to 5, the key touch keyboard 10 of the present invention comprises a plurality of key caps 20, a positioning frame seat 30, a thin film sheet 40, a capacitive circuit board 50 and an aluminum plate 60; wherein,

the key cap 20 is a generally rectangular pressing element, a pressing column 201 is convexly arranged at the central bottom surface of the key cap 20, pivoting grooves 202 are correspondingly arranged at the four end sides of the bottom surface of the key cap 20, and the plurality of key caps 20 are assembled on the key touch keyboard 10;

the positioning frame 30 is a keyboard frame structure with a rectangular grid shape, and is formed by connecting a plurality of first frames 301 and second frames 302 which are vertically and horizontally corresponding, wherein a cylindrical pivot rod 303 is protruded from the front end edge and the rear end edge of the first frame 301, and the other end of each pivot rod 303 is fixedly connected to the appropriate position of the side surface of each second frame 302 to form a frame structure correspondingly pivoted to each keycap 20, and each pivot rod 303 is correspondingly pivoted to the corresponding pivoting groove 202 on the bottom surface of the keycap 20, so that each keycap 20 can be embedded, pivoted and positioned at the corresponding position of the top surface of the positioning frame 30;

the thin film sheet 40 is a thin film sheet body pressed on the bottom surface of the positioning frame seat 30, a plurality of arc-shaped elastic sheet bodies 401 are correspondingly arranged on the thin film sheet 40, and the top surface of each elastic sheet body 401 correspondingly abuts against the bottom surface of the pressing column 201 of each keycap 20, so that each keycap 20 presses each corresponding elastic sheet body 401 downwards to generate the elastic reset effect, a conductive layer 401A is coated on the bottom surface of each elastic sheet body 401 to facilitate the downward pressing conduction of a key signal, and a plurality of hollow through holes 402 are arranged at proper positions on the thin film sheet 40 in a penetrating manner;

the capacitive circuit board 50, which is a touch panel with a capacitive sensing operation mode, is press-fitted to the bottom surface of the thin film sheet 40, and includes a first conductive layer 50A, a second conductive layer 50B, and a plurality of conductive points 50C (as shown in fig. 2); the conducting points 50C are correspondingly disposed at the bottom positions of the pressing pillars 201 of the key caps 20 and the elastic sheet bodies 401, that is, the conductive layer 401A coated with the conductive carbon film on the bottom surface of each elastic sheet body 401 can press and conduct the corresponding conducting points 50C downward to generate a key signal (as shown in fig. 5), so as to provide the key pressing signal of the keyboard, and the signal detecting unit 70 identifies the coordinate position signal of the key pressing (as shown in fig. 6); moreover, the first conductive layer 50A and the second conductive layer 50B are respectively overlapped by a first sensing area and a second sensing area with a plurality of matrix arrangements in an up-down sequence to form a capacitance sensing element, when a user moves a space-separating sliding gesture above a keyboard according to an operation design specification of a touch gesture, for example, the displacement of a finger conductor generates a capacitance sensing value change to the relative sensing area of the first conductive layer 50A and the second conductive layer 50B, and then a signal detection unit 70 identifies coordinate position change information of the capacitance sensing area of the first conductive layer 50A and the second conductive layer 50B, thereby generating a gesture space-separating sensing touch signal; as for the operation mode of the keyboard, a switch unit 80 is used to switch and select the conventional key input or the touch-control mode input signal, wherein the switch unit 80 is electrically connected to a switch key (not shown) on the keyboard, so as to facilitate the user to switch and select the operation mode of the keyboard.

The aluminum plate 60, one of which is press-connected to the plate body on the bottom surface of the capacitive circuit board 50, and the aluminum plate 60 is used to support the whole keyboard structure;

referring to fig. 6, the key touch keyboard 10 of the present invention further includes a switch unit 80, a signal detection unit 70 and a signal transmission unit 90; wherein,

the signal detection unit 70 is electrically connected to the capacitive circuit board 50, and is used for identifying a coordinate position signal of a pressed word key and a coordinate position change signal of a capacitive sensing area;

the switch unit 80 is electrically connected to the signal detection unit 70, and has a function of switching and selecting a key mode or an idle touch mode, when the switch unit 80 is switched to the key mode, the signal detection unit 70 selects and samples the word key pressing signal and transmits the word key pressing signal to a signal transmission unit 90; when the switch unit 80 is switched to the idle touch mode, the signal detection unit 70 selects to sample the gesture idle sensing touch signal and transmit the gesture idle sensing touch signal to a signal transmission unit 90 in the keyboard;

the signal transmission unit 90 is electrically connected to the signal detection unit 70, and the signal transmission unit 90 receives a word key pressing signal or a gesture space-across sensing touch signal and transmits the word key pressing signal or the gesture space-across sensing touch signal to a computer host a, so that the word key pressing signal or the gesture space-across sensing touch signal is processed by the signal of the computer host a, and a keyboard input signal is displayed on a computer screen. Accordingly, the signal transmission unit 90 may be a wireless type Bluetooth (Bluetooth) transmitter or a wired type Universal Serial Bus (USB) transmitter.

The characteristic structure and specific functions of the present invention will be briefly described as follows: the utility model discloses a key touch keyboard, it belongs to a keyboard device with press and response touch-control effect, and it has a sensing word key pressing signal and responds to the finger and separate empty function of shifting touch-control signal by a capacitanc circuit board 50 to utilize a switch key of switch unit 80 to respond to the touch-control mode with selecting the button mode or separating empty, in order to reach keyboard elasticity button and separate the dual use efficiency of empty shift touch-control keyboard.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. A key touch keyboard, comprising: the key comprises a plurality of keycaps, a positioning frame seat, a thin film sheet, a capacitance type circuit board and an aluminum plate; wherein,

the key cap is a pressing element, a pressing column is convexly arranged on the central bottom surface of the key cap, and pivoting grooves are correspondingly arranged at the four end sides of the bottom surface of the key cap;

the positioning frame seat is a rectangular grid-shaped keyboard frame structure and is formed by connecting a plurality of first frames and second frames which are vertically and horizontally corresponding, wherein a cylindrical pivot rod is convexly extended at the front end edge and the rear end edge of each first frame respectively, the other end of each pivot rod is fixedly connected to the side surface of each second frame, and each pivot rod is correspondingly pivoted with a corresponding pivoting groove on the bottom surface of each keycap;

the capacitive circuit board is a touch panel with capacitance induction, is pressed and assembled on the bottom surface of the thin film sheet and comprises a first conductor layer, a second conductor layer and a plurality of conduction points, and the conduction points are correspondingly arranged on the pressing columns of the keycaps and the bottom surface of the elastic sheet body of the thin film sheet; and

2. The key touch keyboard of claim 1, wherein each of the key caps is pivotally connected to a corresponding position of the top surface of the positioning frame.

3. The key touch keyboard of claim 1, wherein the bottom surface of the elastic sheet body is coated with a conductive layer, and a plurality of through holes are formed through the thin sheet body.

4. The key touch keyboard according to claim 1, further comprising a switch unit having an effect of switching a selection key mode, a signal detection unit for identifying a coordinate position signal of a pressed word key and a coordinate position change signal of the capacitive sensing area, and a signal transmission unit for receiving or transmitting the word key press signal or the gesture space sensing touch signal; wherein, the signal detection unit is electrically connected with the capacitance type circuit board; the switch unit is electrically connected with the signal detection unit; the signal transmission unit is electrically connected to the signal detection unit and is connected to a computer host.