CN202167389U - A keyboard that senses key pressure - Google Patents

Abstract

The utility model discloses a keyboard capable of sensing key force, which is formed by sequentially overlapping a plurality of keycaps, a plurality of bridging structures, a rubber gasket, a thin film circuit board and an aluminum plate; the key caps are pivoted to the top edge of a bridge structure, the rubber gasket is correspondingly arranged on the top surface of a thin film circuit board, the thin film circuit board comprises a first conducting sheet, a spacing sheet and a second conducting sheet, a first sensing layer is coated on the bottom surface of the first conducting sheet, a second sensing layer is coated on the top surface of the second conducting sheet, the first sensing layer and the second sensing layer are correspondingly positioned in the through holes of the spacing sheet from top to bottom, and the first sensing layer and the second sensing layer belong to pressure sensing assemblies, so that the key force can be converted into corresponding voltage impedance change values, and the performance of controlling the computer screen action can be correspondingly achieved according to the key force of a user.

Description

A keyboard that senses key pressure

technical field

The utility model relates to a computer keyboard, in particular to a keyboard capable of sensing key force.

Background technique

At present, notebook computers are widely recognized and adopted by market operators and users because they are easy to carry, process documents, and communicate in real time. At present, the keys of notebook computer keyboards all adopt thin key structures. Related notebook computers The keyboard is mainly assembled and connected with a bridging support structure between the keycaps of the keys and the bottom plate. Although the thin bridging keyboard structure of this known notebook computer has the advantages of ultra-thin volume, light weight and precise operation However, the keyboard itself does not have a keyboard structure for sensing the key force, so when the keyboard is used for the control of special computer functions (for example: the acceleration action of computer games), it is greatly restricted, causing its computer keyboard to be used in special occasions. limitations and inconveniences.

Utility model content

The main purpose of the utility model is to solve the above-mentioned shortcomings of the known keyboard, that is, it mainly aims to improve the drawback of the known keyboard that lacks a structure for sensing key force.

The utility model provides a keyboard capable of sensing key pressure, which converts the key force into a corresponding voltage impedance change value by arranging a pressure sensing component on the keyboard, so that the key pressure can be adjusted according to the pressing force received by the keyboard. function to manipulate size.

The keyboard that can sense the key force provided by the utility model is composed of a plurality of key caps, a plurality of bridging structures, a rubber gasket, a film circuit board and an aluminum plate sequentially connected; wherein each of the keys The cap is a rectangular pressing assembly, and a pressing part is formed at the center of the bottom surface of the key cap, and each of the key caps is respectively pivotally connected to the top edge of a bridging structure; each of the bridging structures is An integral rotating structure composed of a first frame and a second frame pivoted by cross shafts, the bottom edge of each bridging structure is respectively pivotally connected to the aluminum plate; the rubber gasket is correspondingly arranged on the The top surface position of the thin film circuit board is provided with a plurality of elastic pieces on the rubber gasket, and each of the elastic pieces is correspondingly assembled and passed through each of the bridging structures, and downwards in each of the elastic pieces. There is a protruding touch rod; the thin film circuit board is a long thin film circuit board that conducts the button signal, and the thin film circuit board is located between the rubber gasket and the aluminum plate, and the thin film circuit board is The plurality of conductive ends correspond to the positions of the contact pressure rods in each of the elastic members, wherein the thin film circuit board includes a first conductive sheet, a spacer sheet and a second conductive sheet in sequence, and in the A first sensing layer is coated on the bottom surface of the first conductive sheet corresponding to the position of the keycap, and a second sensing layer is coated on the top surface of the second conductive sheet corresponding to the position of the keycap , and the first sensing layer and the second sensing layer are arranged in the perforation of the spacer correspondingly; the aluminum plate is a rectangular support plate, and a plurality of A receiving seat and a sliding guide seat are used for corresponding pivot connection to the bottom edge of each of the bridging structures.

Preferably, the first sensing layer and the second sensing layer are pressure sensing components that convert key pressure into corresponding voltage impedance change values.

Preferably, two symmetrical pivot grooves and two corresponding guide grooves are formed on the bottom surface of the keycap, and the pivot grooves and guide grooves are correspondingly pivotally connected to the top edge of the bridging structure.

As a preference, two sliding shafts are extended on both sides of the top edge of the first frame of the bridging structure, and the two sliding shafts are correspondingly slidably and pivotally connected in the two guiding grooves on the bottom surface of the keycap. The corresponding pivots extending from the top edge of the second frame are rotatably pivoted in the two corresponding pivot grooves on the bottom surface of the keycap, and the two corresponding pivots extending outward on both sides of the bottom edge of the second frame It is rotatably pivoted in two corresponding receiving seats of the aluminum plate, and the corresponding sliding shaft of the bottom edge of the first frame is slidably accommodated in the corresponding guide sliding seat of the aluminum plate.

The utility model has the following beneficial effects: a plurality of keys with sensing key force are assembled on the keyboard, so it can provide the user with the convenience of special computer key control, and it can correspond to the key force according to the size of the user's key force. To achieve the performance of controlling the accelerated action of computer screen games, so as to enhance the use range of the keyboard.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the assembly structure of the keyboard capable of sensing key presses of the present invention;

FIG. 2 is a three-dimensional exploded view of a single pressure-sensing key on the key-pressing force-sensing keyboard in FIG. 1;

FIG. 3 is a combined cross-sectional view of the key for sensing the key force in FIG. 2;

FIG. 4 is a partially enlarged schematic view of part A of FIG. 3 .

Explanation of main reference signs

10: Keycap 104: Pivot slot

106: Guide chute 108: Pressing part

20: Bridge structure 21: The first frame

211: sliding shaft 212: sliding shaft

22: Second frame 221: Pivot

222: Pivot

30: rubber gasket 32: perforation

38: Elastic piece 381: Touch bar

40: thin film circuit board

401: The first conductive sheet 4011: The first sensing layer

402: Spacer 4021: Perforation

403: The second conductive sheet 4031: The second sensing layer

42: Opening hole 43: Conductive end

50: aluminum plate

51: Guide slide seat 52: Accepting seat

Detailed ways

Regarding the structure of the keyboard that can sense the key pressure of the present utility model, please refer to Fig. 1 to shown in Fig. A rubber gasket 30, a thin film circuit board 40 and an aluminum plate 50 are sequentially stacked together; wherein, the keycap 10 is a roughly rectangular pressing component, and two symmetrical parts are formed on the bottom surface of the keycap 10 The pivotal groove 104 and two corresponding guide grooves 106, and a pressing part 108 is formed at the central position of the keycap 10, and the two pivotal grooves 104 and the two guide grooves 106 are correspondingly pivotally connected to a bridge The top edge of structure 20.

The bridging structure 20 is an integrated rotating structure formed by a first frame 21 and a second frame 22 pivoted by cross shafts, and two corresponding sliding shafts 211 extending inward from both sides of the top edge of the first frame 21 are sliding pivots. The two corresponding pivots 221 on the top edge of the second frame 22 are rotatably pivoted to the two corresponding pivoting grooves on the bottom surface of the keycap 10. 104, the two corresponding pivots 222 extending outward on both sides of the bottom edge of the second frame 22 are rotatably pivoted in two upwardly bent corresponding receiving seats 52 of an aluminum plate 50, while the bottom of the first frame 21 The corresponding sliding shaft 212 on the edge is slidably accommodated in the upwardly bent corresponding guide slide seat 51 of an aluminum plate 50. Therefore, the top edges and bottom edges of a plurality of bridging structures 20 can be pivotally connected to each other respectively. Between the plurality of keycaps 10 and the aluminum plate 50, a bridge-type key structure is formed respectively.

The rubber gasket 30 is correspondingly arranged on the bottom surface of the plurality of bridging structures 20, and the rubber gasket 30 is provided with a plurality of elastic members 38, and each of the elastic members 38 is correspondingly assembled and passes through each of the bridging structures 20. , and the top surface of each elastic member 38 corresponds to the pressing portion 108 on the bottom surface of each keycap 10, and a pressing rod 381 protrudes downward in each elastic member 38, so that each keycap 10 has pressing elasticity For reset and touch-on button signals, a plurality of perforations 32 are perforated on the rubber gasket 30, and the plurality of perforations 32 correspond to the positions of the sliding shafts 212 and pivots 222 at the bottom edge of the bridging structure 20 .

The thin film circuit board 40 is a long thin film circuit board that conducts the button signal, and it is located between the rubber gasket 30 and an aluminum plate 50. A plurality of openings 42 are pierced on the thin film circuit board 40, and the thin film circuit board 40 The plurality of openings 42 correspond to the positions of the sliding shafts 212 and the pivots 222 at the bottom edge of the bridging structure 20, and the plurality of conductive ends 43 on the thin film circuit board 40 correspond to the contact pressures in the elastic members 38 respectively. The position of the rod 381; the keyboard of the utility model which can sense the key pressure has a key structure with a special control function and can sense the size of the key force, wherein the thin film circuit board 40 includes a first conductive sheet 401, A spacer 402 and a second conductive sheet 403, the pressure-sensing key is coated with a first sensing layer 4011 on the bottom surface of the first conductive sheet 401 corresponding to the position of the keycap 10, and on the second The top surface of the conductive sheet 403 is coated with a second sensing layer 4031 corresponding to the position of the keycap 10 , and the first sensing layer 4011 and the second sensing layer 4031 are located above and below corresponding to the perforation holes of the spacer 402 4021, so that it can be turned up and down by touching, wherein the first sensing layer 4011 and the second sensing layer 4031 belong to the pressure sensing component, which can be a force-sensitive resistor (FSR) ) to convert the key force into the corresponding voltage impedance change value, so that the control performance of the keyboard for special key functions can be achieved through signal processing (for example: acceleration action of computer games).

The aluminum plate 50 is roughly a rectangular support plate, and a plurality of bridging structures 20 are pivotally connected to the aluminum plate 50, that is, a plurality of receiving seats 52 and sliding guide seats 51 are correspondingly extended upward on the aluminum plate 50 for corresponding pivot connection. The pivot shaft 222 and the sliding shaft 212 are connected to the bottom edges of the multiple bridging structures 20 .

Since the utility model assembles a plurality of keys capable of sensing the key force on the keyboard, it can provide the user with the convenience of special computer key control, and it can control the computer screen according to the user's key force. Accelerated actions for games to improve keyboard performance.

The above embodiments are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the spirit and protection scope of the utility model, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the utility model.

Claims (4)

1. A keyboard capable of sensing a key force, comprising: the key cap is formed by sequentially overlapping a plurality of key caps, a plurality of bridging structures, a rubber gasket, a thin-film circuit board and an aluminum plate; wherein,

each keycap is a rectangular pressing component, a pressing part is formed in the center of the bottom surface of the keycap, and each keycap is correspondingly pivoted to the top edge part of the bridge structure;

each bridging structure is an integral rotating structure pivoted by a crossed shaft of a first frame and a second frame, and the bottom edge of each bridging structure is correspondingly pivoted and connected to the aluminum plate;

the rubber gasket is correspondingly arranged on the top surface of the thin film circuit board, a plurality of elastic pieces are arranged on the rubber gasket, the elastic pieces are correspondingly assembled to penetrate through the bridging structures, and a touch pressure rod is extended in each elastic piece in a downward protruding mode;

the thin film circuit board is a long sheet-shaped thin film circuit board for conducting a key signal, the thin film circuit board is positioned between the rubber gasket and the aluminum plate, and a plurality of conductive ends on the thin film circuit board respectively correspond to the positions of the contact pressure rods in the elastic parts, wherein the thin film circuit board sequentially comprises a first conductive sheet, a spacing sheet and a second conductive sheet from top to bottom, a first sensing layer is coated on the bottom surface of the first conductive sheet corresponding to the positions of the keycaps, a second sensing layer is coated on the top surface of the second conductive sheet corresponding to the positions of the keycaps, and the first sensing layer and the second sensing layer are correspondingly positioned in the through holes of the spacing sheet from top to bottom;

the aluminum plate is a rectangular supporting plate, and a plurality of bearing seats and a plurality of guide sliding seats are upwards and correspondingly arranged on the aluminum plate in an extending mode and are used for being correspondingly and pivotally connected to the bottom edge of each bridging structure.

2. The keyboard capable of sensing key force according to claim 1, wherein: the first sensing layer and the second sensing layer are pressure sensing components for converting the key force into corresponding voltage impedance change values.

3. The keyboard capable of sensing key force according to claim 1, wherein: the bottom surface shaping of key cap has two symmetrical pin joint grooves and two to correspond the spout, just pin joint groove and spout correspond the pin joint in bridging structure top edge.

4. The keyboard capable of sensing key force according to claim 1, wherein: two sliding shafts extend from two sides of the top edge of a first frame of the bridging structure, the two sliding shafts are correspondingly slidably pivoted in two guide sliding grooves in the bottom surface of the keycap, corresponding pivots extending from the top edge of a second frame are rotatably pivoted in two corresponding pivot sliding grooves in the bottom surface of the keycap, two corresponding pivots extending from two sides of the bottom edge of the second frame are rotatably pivoted in two corresponding bearing seats of the aluminum plate, and the corresponding sliding shafts at the bottom edge of the first frame are slidably accommodated in the corresponding guide sliding seats of the aluminum plate.

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