CN214753479U

CN214753479U - Keyboard structure integrating touch control and key functions

Info

Publication number: CN214753479U
Application number: CN202120821115.2U
Authority: CN
Inventors: 李文锋
Original assignee: Jiangsu Transimage Technology Co Ltd
Current assignee: Jiangsu Transimage Technology Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-16
Anticipated expiration: 2031-04-21

Abstract

The utility model relates to a keyboard structure of integrated touch-control and button function, including a plurality of button structures, each button structure includes circuit board, elastic element and the touch-control key cap that connects gradually from bottom to top, the circuit board includes touch-control circuit group and button circuit group, and touch-control circuit group includes touch-control response circuit and touch-control drive circuit that a plurality of arrays were arranged, and button circuit group includes a pair of button drive circuit and button response circuit that are located on each key position; when a finger slides on the upper surface of the touch key cap, the touch line group generates a moving cursor signal, when the finger presses any one touch key cap, the touch key cap moves downwards to compress the elastic element, the elastic element moves downwards, and the touch line group is triggered to generate a pressing signal corresponding to the touch key cap. The utility model discloses organize touch-control circuit and the group integration of button circuit in a circuit board, very big compression the space of keyboard, reduce the weight of keyboard.

Description

Keyboard structure integrating touch control and key functions

Technical Field

The utility model relates to a keyboard structure, in particular to keyboard structure of integrated touch-control and button function belongs to electron technical field.

Background

The traditional keyboard is structurally integrated with a touch function, a touch area is usually arranged on the keyboard independently, or a blank key is cancelled, the blank key is arranged to be a touch panel, but the whole weight of the keyboard can be increased in the using process of the keyboard, the total area of the keyboard is increased, the use experience is influenced, and the popularization of the keyboard is not facilitated.

Therefore, it is desired to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: an object of the utility model is to provide a reduce weight, reduce space and low cost's keyboard structure of integrated touch-control and button function.

The technical scheme is as follows: the utility model discloses an integrated touch-control and keyboard structure of button function, including a plurality of button structures, each button structure includes circuit board, elastic element and the touch-control key cap that connects gradually from bottom to top, the circuit board includes touch-control circuit group and button circuit group, and touch-control circuit group includes touch-control response circuit and touch-control drive circuit that a plurality of arrays were arranged, and button circuit group includes a pair of button drive circuit and button response circuit that are located each key position; when a finger slides on the upper surface of the touch key cap, the touch line group generates a moving cursor signal, when the finger presses any one touch key cap, the touch key cap moves downwards to compress the elastic element, the elastic element moves downwards, and the touch line group is triggered to generate a pressing signal corresponding to the touch key cap. The utility model discloses to organize by the touch-control circuit that touch-control response circuit and touch-control drive circuit constitute and the button circuit group that comprises button drive circuit and button response circuit and integrate in a circuit board, very big compression the space of keyboard, reduce the weight of keyboard.

The bottom plate is arranged above the circuit board, the bottom plate and the touch key cap are fixed through scissors, and meanwhile the elastic element penetrates through the scissors to support the touch key cap.

Preferably, a film for adhering and fixing the elastic element is arranged above the bottom plate. The utility model discloses set up the film on the bottom plate, the convenient technology of being convenient for is favorable to pasting fixedly mutually with elastic element.

Furthermore, the elastic element comprises a pressing part connected with the touch key cap, an elastic cover formed by extending outwards from the periphery of the pressing part and a conducting column extending downwards from the middle part of the inner wall of the pressing part; wherein the bottom surface of the elastic cover is connected with the film.

Furthermore, the lower end of the conduction column is provided with a conductor, the key driving circuit and the key sensing circuit are both positioned under the conductor, when a finger presses any touch key cap, the touch key cap moves downwards to compress the elastic element, the conductor on the elastic element moves downwards along with the elastic element, and the conductor triggers the key circuit group to generate a pressing signal corresponding to the touch key cap.

Preferably, the bottom plate and the circuit board are of an integrally formed structure. The utility model discloses a but bottom plate and circuit board integrated into one piece further reduce keyboard weight again, shorten the height of vertical direction, reduce the shared space of keyboard, reduce the cost.

Moreover, the scissors foot includes scissors inside casing and the scissors frame of mutually supporting.

And the processing unit outputs a key signal corresponding to the key function when receiving the moving cursor signal and the pressing signal.

Has the advantages that: compared with the prior art, the utility model has the advantages of: firstly, the utility model integrates the touch control circuit group composed of the touch control induction circuit and the touch control driving circuit and the key circuit group composed of the key driving circuit and the key induction circuit into a circuit board, thereby greatly compressing the space of the keyboard and reducing the weight of the keyboard; the film is arranged on the bottom plate, so that the process is convenient, and the film is favorably adhered and fixed with the elastic element; furthermore the utility model discloses a but bottom plate and circuit board integrated into one piece further reduce keyboard weight again, shorten the height of vertical direction, reduce the shared space of keyboard, reduce the cost.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural view of the present invention in a touch state;

FIG. 4 is a schematic structural view of the present invention in a key-press state;

fig. 5 is a schematic layout diagram of the touch line group and the key line group in the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5;

fig. 7 is a schematic diagram of a processing unit according to 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 and fig. 2, a keyboard structure integrating touch and key functions of the present invention includes a plurality of key structures, each of which includes a circuit board 1, a bottom plate 2, a film 3, an elastic element 4, scissor feet, a touch key cap 7 and a processing unit, wherein the circuit board 1, the bottom plate 2, the film 3, the elastic element 4 and the touch key cap 7 are sequentially connected from bottom to top.

As shown in fig. 5 and 6, the circuit board 1 includes a touch circuit group and a key circuit group, the touch circuit group includes a plurality of touch sensing lines 101 and touch driving lines 102 arranged in an array, and the key circuit group includes a pair of key driving lines 103 and key sensing lines 104 located at each key position.

The bottom plate 2 is located the top of circuit board 1, and is fixed through the scissors foot between bottom plate 2 and the touch-control key cap 7, and elastic element 4 passes this scissors foot in order to support the touch-control key cap simultaneously, and the scissors foot includes scissors inside casing 5 and scissors frame 6 of mutually supporting. The bottom plate and the circuit board can be two independent structures, also can be the integrated into one piece structure, can further attenuate the thickness of keyboard when being the integrated into one piece structure, increase the portability.

Film 3 is located the top of bottom plate 2, because be provided with the trip that is used for connecting the scissors foot on bottom plate 2, the setting of trip leads to the upper surface smoothness of bottom plate 2 not enough, is unfavorable for the technology convenience in production, pastes inconveniently with elastic element promptly, therefore is equipped with film 3 above bottom plate 2, makes things convenient for the technology, and the film does benefit to paste fixedly mutually with elastic element.

The elastic element 4 comprises a pressing part 401, an elastic cover 402 and a conduction column 403, the pressing part 401 is connected with the touch keycap 7, the elastic cover 402 is a cover body formed by extending outwards from the periphery of the pressing part 401, the bottom surface of the elastic cover 401 is connected with the film 3, and the conduction column 403 is a column body extending downwards from the middle part of the inner wall of the pressing part; the lower end of the conduction column 403 is provided with a conductor 8, and the key driving circuit 103 and the key sensing circuit 104 are both located right below the conductor 8.

As shown in fig. 7, the processing unit of the present invention includes an inductive IC and a CPU, and the sensing technology and the control technology adopted by the inductive IC and the CPU are already present and are not described herein again.

As shown in fig. 3, when the finger 9 slides on the upper surface of the touch key cap, the capacitance between the touch sensing lines of the touch line set and the touch driving lines is reduced, so that the voltage of the touch sensing lines is correspondingly reduced, the sliding direction and position of the finger are detected, a moving cursor signal is generated, and the moving cursor signal is transmitted to the CPU by the sensing IC to realize the function of sliding the mouse pointer.

As shown in fig. 4, when a finger 9 presses any one of the touch key caps, the touch key cap moves down to compress the elastic element, the conductor on the elastic element moves down accordingly, the capacitance between the key sensing circuit and the key driving circuit below the conductor decreases, and the voltage of the key sensing circuit decreases correspondingly, so that the key circuit group is triggered to generate a pressing signal corresponding to the touch key cap, and the pressing signal is transmitted to the CPU by the sensing IC to realize the key function. The capacitance variation caused by touch is smaller than that caused by the keys, and meanwhile, the interference of sliding induction can be shielded by using the existing algorithm to realize the automatic switching between the sliding touch function and the key function.

Claims

1. A keyboard structure integrating touch and key functions is characterized in that: the touch control circuit comprises a plurality of key structures, wherein each key structure comprises a circuit board, an elastic element and a touch control keycap which are sequentially connected from bottom to top, the circuit board comprises a touch control circuit group and a key circuit group, the touch control circuit group comprises a plurality of touch control induction lines and touch control driving lines which are arranged in an array, and the key circuit group comprises a pair of key driving lines and key induction lines which are positioned on each key position; when a finger slides on the upper surface of the touch key cap, the touch line group generates a moving cursor signal, when the finger presses any one touch key cap, the touch key cap moves downwards to compress the elastic element, the elastic element moves downwards, and the touch line group is triggered to generate a pressing signal corresponding to the touch key cap.

2. The keyboard structure of claim 1, wherein: the bottom plate is arranged above the circuit board, the bottom plate and the touch key cap are fixed through scissors, and meanwhile, the elastic element penetrates through the scissors to support the touch key cap.

3. The keyboard structure of claim 2, wherein: and a film for sticking and fixing the elastic element is arranged above the bottom plate.

4. The keyboard structure of claim 3, wherein: the elastic element comprises a pressing part connected with the touch keycap, an elastic cover formed by extending outwards from the periphery of the pressing part and a conduction column extending downwards from the middle part of the inner wall of the pressing part; wherein the bottom surface of the elastic cover is connected with the film.

5. The keyboard structure of claim 4, wherein: the lower end of the conduction column is provided with a conductor, the key driving circuit and the key sensing circuit are both located under the conductor, when a finger presses any touch key cap, the touch key cap moves downwards to compress the elastic element, the conductor on the elastic element moves downwards along with the elastic element, and the conductor triggers the key circuit group to generate a pressing signal corresponding to the touch key cap.

6. The keyboard structure of claim 2, wherein: the bottom plate and the circuit board are of an integrally formed structure.

7. The keyboard structure of claim 2, wherein: the scissors feet comprise a scissors inner frame and a scissors outer frame which are mutually matched.

8. The keyboard structure of claim 1, wherein: the mobile terminal further comprises a processing unit, and when the processing unit receives the mobile cursor signal and the pressing signal, the processing unit outputs a key signal corresponding to the key function.