CN217086439U

CN217086439U - Luminous keyboard

Info

Publication number: CN217086439U
Application number: CN202122616738.9U
Authority: CN
Inventors: 李晓
Original assignee: Shenzhen Youcaijia Technology Co ltd
Current assignee: Shenzhen Youcaijia Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-07-29
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a luminous keyboard. The luminous keyboard comprises a supporting plate, a backlight module, a thin film circuit board, at least one key unit and at least one elastic piece; the film circuit board is provided with a plurality of first openings, and the backlight module is provided with a plurality of second openings; the supporting plate is fixedly connected with a plurality of fixing pieces, and the fixing pieces respectively penetrate through the first openings and the second openings and protrude out of the thin film circuit board; the key unit comprises a keycap and a connecting piece; the connecting piece is arranged between the supporting plate and the keycap; one end of the connecting piece is fixedly connected to the fixing piece, and the other end of the connecting piece is connected to the bottom of the keycap, so that the keycap can move up and down relative to the supporting plate. The utility model discloses set up backlight unit in the backup pad top, different current designs provide a novel luminous keyboard structure overall arrangement, compact structure to can reduce backlight unit's thickness, thereby be favorable to the slimming of luminous keyboard.

Description

Luminous keyboard

Technical Field

The utility model relates to a keyboard field especially relates to a luminous keyboard.

Background

Common peripheral input devices for computers include a mouse, a keyboard, a trackball, etc., wherein the keyboard is the most important input device, a large number of commands are input to a processor through the keyboard, which is an external device, and can directly input characters and symbols, so that the peripheral input devices are well appreciated by users and input device manufacturers.

With the continuous improvement of the living standard of people, the requirements of people on electronic products are higher and higher, and the keyboard is continuously updated. In order to realize accurate input on electronic products in dark environments, the keyboard needs to be illuminated, so that the light-emitting keyboard is attracting more and more attention. The light-emitting keyboard can also enable characters on the keys to emit light in a weak light place, so that a user can clearly identify different keys.

As shown in fig. 1, which is a partial cross-sectional view of a conventional light-emitting keyboard, the light-emitting keyboard includes a supporting plate 91, a backlight module 92, a thin film circuit board 93, at least one key unit 94, and at least one elastic member 95. The backlight module 92 is disposed below the supporting plate 91, and the thin film circuit board 93 is disposed above the supporting plate 91. A plurality of fixing members 913 are fixedly connected to the supporting plate 91.

The key unit 94 includes a keycap 941 and a connector 942. The connector 942 is disposed between the supporting plate 91 and the key cap 941. The connecting member 942 has one end fixedly connected to the fixing member 913 and the other end connected to the bottom of the key cap 941, so that the key cap 941 can move up and down relative to the supporting plate 91. The elastic element 95 is disposed between the key cap 941 and the thin film circuit board 93, and is configured to provide an elastic force for the key cap 941 to reset after being pressed. The thin film circuit board 93 is preset with a circuit wiring (not shown), the circuit wiring is provided with a point control contact 931 corresponding to the elastic member 95, when the key unit 94 is pressed down by a force, the elastic member 95 is pressed down by the key cap 941 to deform downward and touch the point control contact 931 on the thin film circuit board 93, so that a circuit on the thin film circuit board 93 is conducted to transmit a signal corresponding to a character symbol (not shown) on the pressed key cap 941.

The light emitted by the backlight module 92 reaches the bottom of the key cap 941 through the supporting plate opening 912 and the thin film circuit board opening 932, so that the key cap 941 is backlight to realize the light emission of the keyboard.

The structure of the luminous keyboard in the industry at present is generally to locate backlight unit in the backup pad below, and the utility model discloses a new method is opened up, a luminous keyboard structure that is different from prior art is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a luminous keyboard sets up backlight unit in the backup pad top, and the molding is unique, novel, can also reduce backlight unit's thickness, and then is favorable to luminous keyboard's slimming.

In order to achieve the above object, the present invention provides a light-emitting keyboard, which includes a supporting plate, a backlight module, a thin film circuit board, at least one key unit, and at least one elastic member;

the backlight module is arranged on the supporting plate, and the thin film circuit board is arranged on one side of the backlight module, which is far away from the supporting plate;

the film circuit board is provided with a plurality of first openings, and the backlight module is provided with a plurality of second openings; the supporting plate is fixedly connected with a plurality of fixing pieces, and the fixing pieces respectively penetrate through the first openings and the second openings and protrude out of the thin film circuit board;

the key unit comprises a keycap and a connecting piece; the connecting piece is arranged between the supporting plate and the keycap; one end of the connecting piece is fixedly connected with the fixing piece, and the other end of the connecting piece is connected with the bottom of the keycap, so that the keycap can move up and down relative to the supporting plate;

the elastic piece is arranged between the keycap and the film circuit board and is used for providing elastic force for the keycap to reset after being pressed;

the keycap is made of transparent or semitransparent materials and at least comprises a light-permeable area.

The keycap is made of PC or ABS plastics and is formed by injection molding.

The keycaps are provided with character symbols for distinguishing different key units.

The character symbols are formed by adopting a paint spraying laser carving or silk screen printing process.

The upper side and the lower side of the thin film circuit board are both preset with circuit wiring, the circuit wiring comprises two corresponding contact contacts, the two contact contacts are correspondingly positioned below the elastic piece, the thin film circuit board further comprises a spacer layer hole positioned between the two contact contacts, so that when the key unit is pressed down under stress, the elastic piece is pressed down by the key cap to deform and touch the thin film circuit board, and then the two contact contacts are connected and conducted to transmit signals corresponding to the character symbols of the pressed key cap.

The connecting piece is of a scissor-leg structure and comprises a first bracket and a second bracket which are intersected and pivoted with each other;

each key unit is correspondingly positioned between the two fixing pieces; one end of the first support is connected to the bottom of one side of the keycap, and the other end of the first support is fixedly connected to a fixing piece; one end of the second support is connected to the bottom of the other side of the keycap, and the other end of the second support is fixedly connected to the other fixing piece.

The thin film circuit board is subjected to extinction treatment.

The upper surface of the film circuit board is coated with extinction ink to realize extinction treatment and further achieve the shading effect.

The backlight module comprises a reflector plate, a light-emitting element and a light guide plate, and is used for providing a light source required by the light-emitting keyboard to illuminate the keycap;

the light-emitting element comprises an S-shaped strip-shaped flexible circuit board and a plurality of LED lamps attached to the flexible circuit board;

the flexible circuit board is arranged on the supporting plate, the reflecting sheet is arranged on the flexible circuit board, and the light guide plate is arranged on the reflecting sheet; the LED lamp is characterized in that a first light through hole is formed in the position, corresponding to the LED lamp, of the light guide plate, and a second light through hole is formed in the position, corresponding to the LED lamp, of the reflector plate, so that the LED lamp is exposed.

The light guide plate is made of polymethyl methacrylate, synthetic resin, polycarbonate, polyester, polyolefin or glass in a mode of injection molding, etching, hot-press molding or cutting processing.

The utility model has the advantages that: the utility model provides a luminous keyboard, which comprises a support plate, a backlight module, a thin film circuit board, at least one key unit and at least one elastic piece; the backlight module is arranged on the supporting plate, and the thin film circuit board is arranged on one side of the backlight module, which is far away from the supporting plate; the film circuit board is provided with a plurality of first openings, and the backlight module is provided with a plurality of second openings; the supporting plate is fixedly connected with a plurality of fixing pieces, and the fixing pieces respectively penetrate through the first openings and the second openings and protrude out of the thin film circuit board; the key unit comprises a keycap and a connecting piece; the connecting piece is arranged between the supporting plate and the keycap; one end of the connecting piece is fixedly connected to the fixing piece, and the other end of the connecting piece is connected to the bottom of the keycap, so that the keycap can move up and down relative to the supporting plate. The utility model discloses set up backlight unit in the backup pad top, different current designs provide a novel luminous keyboard structure overall arrangement, compact structure to can reduce backlight unit's thickness, thereby be favorable to luminous keyboard's slimming.

Drawings

For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the present invention and accompanying drawings, which are provided for the purpose of illustration and description and are not intended to limit the present invention.

In the drawings, there is shown in the drawings,

FIG. 1 is a partial cross-sectional view of a prior art illuminated keyboard;

fig. 2 is a partial cross-sectional view of the light-emitting keyboard of the present invention;

fig. 3 is a schematic view of a light emitting device according to the present invention;

fig. 4 is a top view of the light-emitting keyboard of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 2 to 4, the present invention provides a light-emitting keyboard, which includes a supporting plate 1, a backlight module 2, a thin film circuit board 3, at least one key unit 4, and at least one elastic member 5.

The backlight module 2 is arranged on the supporting plate 1, and the thin film circuit board 3 is arranged on one side of the backlight module 2, which is far away from the supporting plate 1.

The film circuit board 3 is provided with a plurality of first openings 31, and the backlight module 2 is provided with a plurality of second openings 21. A plurality of fixing pieces 13 are fixedly connected to the supporting plate 1. The fixing members 13 respectively pass through the first openings 31 and the second openings 21 and protrude from the thin film circuit board 3.

The key unit 4 includes a key cap 41 and a connecting member 42. The connecting member 42 is disposed between the supporting plate 1 and the key cap 41. The connecting member 42 has one end fixedly connected to the fixing member 13 and the other end connected to the bottom of the key cap 41, so that the key cap 41 can move up and down relative to the supporting plate 1.

Specifically, the key cap 41 is made of a transparent or semitransparent material, and at least includes a light-permeable area. Preferably, the key cap 41 is made of PC (polycarbonate) or ABS (terpolymer of three monomers of acrylonitrile (a), butadiene (B) and styrene (S)) plastic, and can be formed by injection molding.

As shown in fig. 4, the key cap 41 is provided with a character symbol 412 for distinguishing different key units 4. Alternatively, the character symbol 412 may be formed by a laser spraying and carving process or a silk-screen process.

In an alternative embodiment of the present invention, the connecting member 42 is a scissors structure, and includes a first support 421 and a second support 423 that are crossed and pivoted to each other. Each key unit 4 is located between two fixed members 13. One end of the first support 421 is connected to the bottom of one side of the keycap 41, and the other end is fixedly connected to a fixing member 13; one end of the second support 423 is connected to the bottom of the other side of the keycap 41, and the other end is fixedly connected to the other fixing member 13.

Specifically, the elastic member 5 is disposed between the key cap 41 and the thin film circuit board 3, and is used for providing an elastic force for the key cap 41 to return after being pressed.

Specifically, circuit wirings (not shown) are preset on the upper and lower sides of the thin-film circuit board 3, and the circuit wirings include two corresponding contact contacts 32, the two contact contacts 32 are correspondingly located below the elastic member 5, the thin-film circuit board 3 further includes a spacer layer opening 33 located between the two contact contacts 32, so that when the key unit 4 is pressed by a force, the elastic member 5 is pressed by the key cap 41 to deform downward and touch the thin-film circuit board 3, and the two contact contacts 32 are connected and conducted to transmit a signal corresponding to the character symbol 412 of the pressed key cap 41.

Specifically, the backlight module 2 includes a reflective sheet 23, a light emitting device 24, and a light guide plate 25. The backlight module 2 is used to provide the light source required by the light-emitting keyboard to illuminate the key cap 41.

The thin film circuit board 3 is made of transparent materials. Further, a light-transmitting hole (not shown) is formed in the thin film circuit board 3 at a position corresponding to the character symbol 412, so that the key cap 41 is illuminated more clearly.

The light guide plate 25 is made of a highly light-transmitting material, for example: polymethyl methacrylate (PMMA), synthetic resin, Polycarbonate (PC), Polyester (PET), polyolefin (polyoefins), or glass, and a plate manufactured by injection molding, etching, hot press molding, cutting, or the like. The light guide plate 25 includes a micro light guide structure 251 adapted to the outer shape of the key cap 41 of the key unit 4, so as to effectively transmit the light emitted from the LED lamp 242.

The thin film circuit board 3 is subjected to extinction processing. Optionally, the upper surface of the thin film circuit board 3 is coated with a matting ink to realize a matting process, thereby achieving a light shielding effect.

As shown in fig. 3, the light emitting element 24 includes an S-shaped strip-shaped flexible circuit board (FPC board) 241 and a plurality of LED lamps 242 attached to the flexible circuit board 241. The number of the LED lamps 242 can be set according to the requirement of light effect adjustment.

The flexible circuit board 241 is disposed on the support plate 1, the reflective sheet 23 is disposed on the flexible circuit board 241, and the light guide plate 25 is disposed on the reflective sheet 23. Further, the light guide plate 25 is provided with a first light passing hole 251 corresponding to the LED lamp 242, and the reflective sheet 23 is provided with a second light passing hole 231 corresponding to the LED lamp 242, so as to expose the LED lamp 242. When the LED lamp 242 works, light rays are emitted from the LED lamp 242, the light rays enter through the side face of the light guide plate 25, the light guide plate 25 converts a point light source of the LED lamp 242 into a surface light source, and the surface light source emits light to the keycap 41 through the first opening hole 31, so that the keycap 41 is backlighted. The upper surface of the thin film circuit board 3 is subjected to extinction treatment, so that light can be shielded, and light leakage can be prevented. On the other hand, a light shielding sheet is not required to be arranged on the backlight module 2, so that the thickness of the backlight module 2 is reduced, and the thinner and lighter light-emitting keyboard is realized.

To sum up, the light-emitting keyboard provided by the utility model comprises a support plate, a backlight module, a thin film circuit board, at least one key unit and at least one elastic piece; the backlight module is arranged on the supporting plate, and the thin film circuit board is arranged on one side of the backlight module, which is far away from the supporting plate; the film circuit board is provided with a plurality of first openings, and the backlight module is provided with a plurality of second openings; the supporting plate is fixedly connected with a plurality of fixing pieces, and the fixing pieces respectively penetrate through the first openings and the second openings and protrude out of the thin film circuit board; the key unit comprises a keycap and a connecting piece; the connecting piece is arranged between the supporting plate and the keycap; one end of the connecting piece is fixedly connected to the fixing piece, and the other end of the connecting piece is connected to the bottom of the keycap, so that the keycap can move up and down relative to the supporting plate. The utility model discloses set up backlight unit in the backup pad top, different current designs provide a novel luminous keyboard structure overall arrangement, compact structure to can reduce backlight unit's thickness, thereby be favorable to luminous keyboard's slimming.

From the above, it is obvious to those skilled in the art that various other changes and modifications can be made according to the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.

Claims

1. A luminous keyboard is characterized by comprising a supporting plate (1), a backlight module (2), a thin film circuit board (3), at least one key unit (4) and at least one elastic piece (5);

the backlight module (2) is arranged on the supporting plate (1), and the thin film circuit board (3) is arranged on one side of the backlight module (2) far away from the supporting plate (1);

a plurality of first open holes (31) are formed in the thin film circuit board (3), and a plurality of second open holes (21) are formed in the backlight module (2); the supporting plate (1) is fixedly connected with a plurality of fixing pieces (13), and the fixing pieces (13) respectively penetrate through the first open holes (31) and the second open holes (21) and protrude out of the thin film circuit board (3);

the key unit (4) comprises a keycap (41) and a connecting piece (42); the connecting piece (42) is arranged between the supporting plate (1) and the keycap (41); one end of the connecting piece (42) is fixedly connected with the fixed piece (13), and the other end of the connecting piece is connected with the bottom of the keycap (41), so that the keycap (41) can move up and down relative to the supporting plate (1);

the elastic piece (5) is arranged between the keycap (41) and the thin film circuit board (3) and is used for providing elastic force for the keycap (41) to reset after being pressed;

the keycap (41) is made of transparent or semitransparent materials and at least comprises a light-permeable area.

2. The illuminated keyboard according to claim 1, wherein the key caps (41) are made of PC or ABS plastic and are injection molded.

3. The illuminated keyboard according to claim 1, wherein the key caps (41) are provided with character symbols (412) for distinguishing different key units (4).

4. The light-emitting keyboard of claim 3, wherein the character symbol (412) is formed using a lacquer laser engraving or silk screen printing process.

5. The light-emitting keyboard according to claim 3, wherein the upper and lower sides of the membrane circuit board (3) are pre-installed with circuit wiring, and the circuit wiring includes two corresponding contact points (32), the two contact points (32) are correspondingly located below the elastic member (5), the membrane circuit board (3) further includes a spacer layer opening (33) located between the two contact points (32), so that when the key unit (4) is pressed by a force, the elastic member (5) is pressed by the key cap (41) to deform downward and touch the membrane circuit board (3), and further the two contact points (32) are connected and conducted to transmit signals corresponding to the character symbol (412) of the pressed key cap (41).

6. The light-emitting keyboard according to claim 1, wherein the connecting member (42) is a scissors structure, and comprises a first support (421) and a second support (423) intersecting with each other and pivotally connected to each other;

each key unit (4) is correspondingly positioned between the two fixing pieces (13); one end of the first support (421) is connected to the bottom of one side of the keycap (41), and the other end of the first support is fixedly connected to a fixing piece (13); one end of the second support (423) is connected to the bottom of the other side of the keycap (41), and the other end is fixedly connected to the other fixing piece (13).

7. The light-emitting keyboard according to claim 1, wherein the thin film circuit board (3) is subjected to a light extinction process.

8. The light-emitting keyboard according to claim 7, wherein the upper surface of the thin film circuit board (3) is coated with a matting ink to realize a matting process for light shielding.

9. The keyboard of claim 1, wherein the backlight module (2) comprises a reflective sheet (23), a light-emitting element (24), and a light guide plate (25), the backlight module (2) is used for providing a light source required by the keyboard to illuminate the keycap (41);

the light-emitting element (24) comprises an S-shaped strip-shaped flexible circuit board (241) and a plurality of LED lamps (242) attached to the flexible circuit board (241);

the flexible circuit board (241) is arranged on the support plate (1), the reflecting sheet (23) is arranged on the flexible circuit board (241), and the light guide plate (25) is arranged on the reflecting sheet (23); the light guide plate (25) is provided with a first light through hole (251) corresponding to the LED lamp (242), and the reflector plate (23) is provided with a second light through hole (231) corresponding to the LED lamp (242), so that the LED lamp (242) is exposed.

10. The light-emitting keyboard according to claim 9, wherein the light guide plate (25) is made of polymethyl methacrylate, synthetic resin, polycarbonate, polyester, polyolefin, or glass, and is manufactured by injection molding, etching, hot press molding, or cutting.