CN114860035A

CN114860035A - Ultrathin notebook keyboard structure

Info

Publication number: CN114860035A
Application number: CN202210570402.XA
Authority: CN
Inventors: 李小梅
Original assignee: Suzhou Spranti Technology Co ltd
Current assignee: Suzhou Spranti Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-08-05

Abstract

The invention discloses an ultrathin notebook keyboard structure, which relates to the field of notebook keyboard structures and comprises the following components: glue-filled character keys, metaldome, a PCB (printed circuit board), an FPC (flexible printed circuit) board and a glue-filled mold; the PCB is connected with the plurality of groups of metaldome according to the key position arrangement of the keyboard, a plurality of groups of glue filling character keys are correspondingly distributed above each group of metaldome, the glue filling character keys are in contact with the metaldome, and the opposite surface of the PCB, which is connected with the metaldome surface, is connected with the FPC.

Description

Ultrathin notebook keyboard structure

Technical Field

The invention relates to the field of notebook keyboard structures, in particular to an ultrathin notebook keyboard structure.

Background

The structure of the notebook keyboard at the present stage is roughly from top to bottom, and is used for inputting pressed keys, generating the same input and return rubber + flexible sheets for ensuring that the pressed positions of a few keys are different, a bottom plate comprising a conductive film, a light shielding plate for ensuring light, an LGP + reflector sheet and an FPC for generating signals; the method mainly uses the resistance principle to output different combined connection points by the FPC so as to transmit the input character information to the CPU, but the structure is complex, the production process is complex, the needed components are various, and the process limits the thickness of the keyboard.

Therefore, it is necessary to provide a slim notebook keyboard structure to solve the above problems.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: an ultra-thin notebook keyboard structure comprising:

glue filling character keys, metal dome, a PCB and an FPC board;

the PCB is connected with a plurality of metal dome groups according to the key position arrangement of a keyboard, a plurality of glue-filled character keys are correspondingly distributed above each metal dome group, the glue-filled character keys are contacted with the metal dome groups, and the opposite surface of the PCB, which is connected with the metal dome surfaces, is connected with the FPC;

and the glue-filled character key is manufactured by a glue-filling mould and a UV glue-filling machine.

Further, preferably, the glue-filled character key includes:

the character cap is manufactured by UV glue through the glue injection mold;

and the key rod is made of UV glue, one end of the key rod is connected with the character cap, and the other end of the key rod is in contact with the metal dome.

Further, preferably, the word cap includes:

the character surface is in a circular structure;

the convex characters are arranged at the center of the character surface, and characters can be judged through touch when light is not good;

the face angle is arranged at the edge of the character face;

the word bottom is arranged below the word surface, and the edge of the word bottom is a right angle;

the whole character cap is made of UV glue, so that the character cap has good light transmission; the type of the convex characters is changed through a glue pouring template; the hand feeling is increased when the face angle is pressed; the bottom edge of the character is a right angle for convenient connection.

Further, preferably, the key lever includes:

the rod concave bottom is arranged on one surface, facing the metal dome, of the key rod, and the rod concave bottom is hemispherical and concave and is connected with the metal dome in a matched mode.

Further, preferably, the PCB board includes:

and the LEDs are arranged on the PCB and are connected below each metal dome by a circuit, and the size of each LED is smaller than the area shielded by the character surface.

Further, preferably, the PCB board:

and the FPC board is welded and connected through ACF, so that the conduction effect is achieved.

Further, preferably, the injection mold includes:

a mold cavity, a spacer, a bottom mold and a bottom plate;

the manufacturing method of the glue-pouring character key through the UV glue-pouring machine comprises the following steps: in the manufacturing process of the UV glue pouring machine, the bottom plate is provided with the bottom die, the spacer is arranged on the bottom die, a gap exists between the bottom die and the spacer, one end of the bottom die, which is not covered by the spacer, is coated with glue, so that UV glue enters the die cavity, and then light curing is carried out.

Further, as preferred, the glue injection mold further includes:

the elastic sheet is arranged on the partition sheet, so that the metal dome is tightly combined with the concave bottom of the rod;

a character pattern, 4X4, is disposed in the bottom plate and corresponds to the position of the raised characters.

Compared with the prior art, the invention provides an ultrathin notebook keyboard structure, which has the following beneficial effects:

1. in the embodiment of the invention, the glue-filled character key replaces a structure of a character key and a balance rod in a traditional notebook keyboard, the cylindrical character cap ensures that any direction of the pressed character key can transfer force to the center, the input accuracy is ensured, meanwhile, the key rod of the cylinder can ensure that the character cap is uniformly stressed in all directions during rebounding, the input hand feeling is improved, and the glue-filled character key has good light transmission performance through UV glue manufacturing; meanwhile, the metal dome replaces the functions of original scissors, rubber and a bottom plate, input information is converted into an electric signal through the on-off of the metal dome, and meanwhile, the metal dome has certain resilience performance, so that the structure of the keyboard is reduced.

2. In the embodiment of the invention, the PCB hard board, the additionally arranged LED and the FPC replace the structure of a film, a light shielding plate, a light guide plate, a reflector plate and the FPC, and the glue-pouring character key is made of UV glue and has good light transmission performance, so that the LED and the glue-pouring character key can play a role of emitting light by the light shielding plate, the light guide plate and the reflector plate in a common structure.

Drawings

Fig. 1 is a schematic structural diagram of an ultra-thin notebook keyboard structure.

FIG. 2 is a schematic diagram of a portion of a simple notebook keyboard PCB.

Fig. 3 is a schematic view of a glue-filled character key structure of an ultra-thin notebook keyboard structure.

Fig. 4 is a schematic diagram of a combination of glue-filled character keys and metal dome of an ultra-thin notebook keyboard structure.

Fig. 5 is a schematic diagram of a glue injection mold of an ultrathin notebook keyboard structure.

1. Glue filling character keys; 2. a metal dome; 3. a PCB; 4. FPC; 5. a glue injection mold; 10. a character cap; 11. a key lever; 12. convex characters; 13. literal; 14. a face angle; 15. word bottom; 16. a rod recess bottom; 31. an LED; 51. a mold cavity; 52. a spacer; 521. a spring plate; 53. a character module; 54. bottom die; 55. a base plate.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present invention, an ultra-thin notebook keyboard structure includes:

glue-filled character keys 1, metal dome2, a PCB 3 and an FPC 4;

the PCB 3 is connected with a plurality of metal dome2 according to keyboard key position arrangement, a plurality of glue-filled character keys 1 are correspondingly distributed above each metal dome2, the glue-filled character keys 1 are in contact with the metal dome2, and the FPC 4 is connected with the opposite surface of the PCB 3 connected with the metal dome 2;

the glue-filled character key 1 is manufactured by the glue injection mold 5 and the UV glue injection machine, and the UV glue has good light transmittance.

In the above structure, the metal dome is an elastic sheet installed inside the keyboard of the notebook computer.

In this embodiment, as shown in fig. 3, the glue-filled character key 1 includes:

the character cap 10 is made of UV glue;

and a key bar 11 made of UV glue, having one end connected to the letter cap 10 and the other end contacting the metal dome 2.

In this embodiment, as shown in fig. 3, the word cap 10 includes:

the character surface 13 is made in a circular shape;

the convex characters 12 are arranged at the center of the character surface 13, and can judge characters through touch when light is not good;

a face angle 14 arranged at the edge of the face 13;

the character bottom 15 is arranged below the character surface 13, and the edge of the character bottom is a right angle;

wherein the type of the convex characters 12 is changed through a glue pouring template; the face angle 14 increases hand feel when pressed; the edge of the bottom 15 is right-angled and convenient to connect;

as a preferred embodiment, after the glue-filled character key 1 is installed in the notebook keyboard shell, the character cap 10 is exposed on the outer side, the character face 13 is circular, so that the force on the center is more uniform when corners are pressed, the continuity of input is increased, the raised characters 12 can enhance the accuracy of input through the convex touch when the light is poor or the sight is inconvenient, the corners 14 make the pressing hand feeling of the edge of the character cap 10 more comfortable, and the character bottom 15 ensures that the gap is reduced when the character cap is connected with the notebook keyboard shell, so that the entering of dust is reduced.

In this embodiment, as shown in fig. 4, the key lever 11 includes:

the rod concave bottom 16 is arranged on the surface of the key rod 11, which is wanted to be contacted with the metal dome2, is in a hemispherical concave shape and is matched and connected with the metal dome2 protrusion;

the arc shape of the rod concave bottom 16 is similar to that of the metal dome2, so that the stress is equal when the rod concave bottom is pressed and rebounded, the service life of the metal dome2 is prolonged, and the input hand feeling is enhanced.

In this embodiment, as shown in fig. 2, the PCB 3 includes:

the LEDs 31 are connected below each metal dome2 through wiring on the PCB 3, and the size of the LEDs is smaller than the area blocked by the character surface 13;

it should be noted that the LED31 functions to emit light through the glue-filled character key 1, so that the notebook keyboard has a backlight, and therefore, the size of the backlight is smaller than the area covered by the character surface 13.

In this embodiment, as shown in fig. 1, the PCB 3:

and is connected with the FPC board 4 through ACF welding, thereby achieving the conduction effect.

In this embodiment, as shown in fig. 5, the glue injection mold 5 includes:

a cavity 51, a spacer 52, a bottom mold 54, and a bottom plate 55.

Glue-pouring character key 1 makes through the UV glue-pouring machine, in the preparation process of UV glue-pouring machine, install on bottom plate 55 die 54 place on die 54 spacer 52, die 54 with there is the clearance spacer 52 die 54 not by the one end rubber coating that spacer 52 covered makes the UV colloid get into in the die cavity 51, later carries out the photocuring.

In this embodiment, as shown in fig. 5, the glue injection mold 5 further includes:

a spring plate 521, which is arranged on the spacer 52, so that the metal dome2 is tightly combined with the rod concave bottom 16;

a matrix 53, 4X4 is provided in the bottom plate 55 and corresponds to the position of the raised letter 12.

As a preferred embodiment, in the manufacturing process of the glue-filled character key 1, first, the bottom mold 54 is placed on the bottom plate 55, then, according to the required raised characters 12, the character combining mold 53 is selectively stretched, so that the corresponding raised characters 12 are formed in the gap between the mold cavity 51 and the bottom plate 55, then, the produced spacer 52 is covered on the upper surface of the bottom mold 54, glue is applied to the end of the bottom mold 54 which is not covered by the spacer 52, due to the gap between the spacer 52 and the bottom mold 54, the glue enters the mold cavity 51 by gravity through the inclination or surface treatment of the bottom mold 54, after the glue completely enters, the glue enters the curing chamber to be light-cured by the light source, due to the elastic sheet 521 wrapped in the spacer 52, the arc shapes of the rod concave bottom 16 and the metal dome2 can be more tightly attached, the resilience hand feeling is ensured.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an ultra-thin notebook keyboard structure which characterized in that: the method comprises the following steps:

the glue-pouring character key (1), the metal dome (2), the PCB (3) and the FPC board (4);

the PCB (3) is connected with a plurality of metal dome (2) groups according to keyboard key position arrangement, a plurality of glue-filled character keys (1) are correspondingly distributed above each metal dome (2) group, the glue-filled character keys (1) are contacted with the metal dome (2), and the opposite surface of the PCB (3) connected with the metal dome (2) surface is connected with the FPC (4);

the glue-filled character key (1) is manufactured through a glue injection mold (5) and a UV glue injection machine.

2. The ultra-thin notebook keyboard structure of claim 1, wherein: the glue-filled character key (1) comprises:

the character cap (10) is manufactured through the glue injection mold (5) by using UV glue;

the key rod (11) is made of UV glue, one end of the key rod (11) is connected with the character cap (10), and the other end of the key rod (11) is in contact with the metal dome (2).

3. The ultra-thin notebook keyboard structure of claim 2, wherein: the letter cap (10) includes:

the character surface (13) is of a circular structure;

the convex characters (12) are arranged at the right center of the surface of the character surface (13);

the face angle (14) is arranged at the edge of the face (13);

the word bottom (15) is arranged below the word surface (13), and the edge of the word bottom is a right angle.

4. The ultra-thin notebook keyboard structure of claim 2, wherein: the key lever (11) includes:

the key rod (11) is arranged on the surface, contacting with the metal dome (2), of the key rod (11), and the rod concave bottom (16) is in a hemispherical concave shape and is connected with the metal dome (2) in a protruding matching mode.

5. The ultra-thin notebook keyboard structure of claim 3, characterized in that: the PCB board (3) comprises:

and the LEDs (31) are arranged on the PCB (3), the circuit is connected below each set of metal dome (2), and the size of each LED (31) is smaller than the area shielded by the literal (13).

6. The ultra-thin notebook keyboard structure of claim 3, wherein: the PCB (3) and the FPC (4) are connected through ACF welding.

7. The ultra-thin notebook keyboard structure of claim 1, wherein: the glue injection mold (5) comprises:

a cavity (51), a spacer (52), a bottom mold (54), and a bottom plate (55);

the manufacturing method of the glue-pouring character key (1) through the UV glue-pouring machine comprises the following steps: in the manufacturing process of the UV glue filling machine, the bottom die (54) is installed on the bottom plate (55), the spacer (52) is placed on the bottom die (54), a gap exists between the bottom die (54) and the spacer (52), one end, which is not covered by the spacer (52), of the bottom die (54) is glued, so that UV glue enters the die cavity (51), and then light curing is performed.

8. The ultra-thin notebook keyboard structure of claim 7, wherein: the glue injection mold (5) further comprises:

the elastic sheet (521) is arranged on the spacer (52) so that the metal dome (2) is tightly combined with the rod concave bottom (16);

a matrix (53), 4X4 is disposed in the bottom plate (55) and corresponds to the position of the raised letter (12).