TWM555503U - Backlight keyboard - Google Patents

Abstract

A backlit keyboard comprises a light source circuit board, a plurality of light emitting elements, a button base, a button circuit board, and a plurality of pressing units. The light-emitting elements are disposed on a top surface of the light-emitting circuit board, and the button bases are stacked on the light-emitting circuit board. The key circuit boards are stacked on the key base and include a plurality of key lines, and the pressing The units are respectively disposed above the button circuit board corresponding to the button lines, and each of the pressing units can conduct the respective button lines when pressed. The button base of the present invention can not only be used as a structure for pivoting and assembling the pressing units, but also can penetrate the light emitted by the light-emitting elements to generate a backlight effect, and can also effectively reduce the number of structural layers. Simplify the assembly process and reduce the thickness.

Description

Backlit keyboard

The present invention relates to a keyboard, and more particularly to a backlit keyboard.

In order to be able to use the keyboard in an environment with insufficient brightness, a light-emitting component is generally added to the components of the keyboard. For example, a conventional keyboard disclosed in Taiwan Patent No. M432082 includes a light guiding film and a stacking arrangement. a light-pressing button base above the light-guiding film, a circuit board stacked above the button base, and a plurality of light-emitting elements disposed on the bottom surface of the circuit board and illuminatingly disposed on the circuit board The upper spacer and a plurality of pressing units disposed above the button base. Each of the pressing units includes a key cap located above the spacer, an adapter that passes through the spacer and the circuit board and is connected between the button base and the keycap, and a top of the spacer And passing through the adapter to connect the elastic members of the keycap. Wherein, a portion of the light emitted by the light-emitting elements passes upwardly through the button base, the circuit board and the spacer, and the other portion is reflected downward by the light guide film, and finally the key cap is The surface is transparent, which in turn allows the existing keyboard to be identified and used in a dark environment.

However, the keyboard is composed of the light guiding film, the button base, the circuit board, the light emitting elements, the spacer and the pressing unit, so that the structure is up to six layers, and each layer component is assembled during assembly. The combination of quasi-and combination causes difficulty in assembly, and at the same time, because the number of layers is large, it is difficult to avoid the thickness of the keyboard becoming thick. Therefore, the keyboard has room for improvement as electronic products continue to pursue thinner manufacturing goals.

Therefore, the object of the present invention is to provide a backlit keyboard which can effectively reduce the thickness of the keyboard and also has a backlight function.

Therefore, the backlight keyboard of the present invention comprises a light source circuit board, a plurality of light emitting elements, a button base, a button circuit board, and a plurality of pressing units.

The light-emitting elements are disposed on the top surface of the light source circuit board, and the button bases are stacked on the light source circuit board. The key circuit boards are stacked on the button base and include a plurality of button lines. It is disposed above the button circuit board corresponding to the button line, and each pressing unit can conduct the respective button line when pressed.

The utility model has the advantages that the button base can not only be pivoted and assembled as the pressing unit, but the total number of structural layers of the keyboard is reduced to five layers, which effectively simplifies the assembly process and reduces the thickness, and can also make the same. The light emitted by the illuminating element penetrates to produce a backlight effect.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2 and 3, an embodiment of the backlight keyboard of the present invention comprises a light source circuit board 2, a plurality of light-emitting elements 3, a button base 4, a button circuit board 5, and a plurality of pressing units 6.

The light-emitting elements 3 are disposed on the top surface of the light source circuit board 2, and are electrically connected through the light source circuit board 2 to generate light. Further, the light-emitting elements 3 can be light-emitting diodes, but are not limited thereto.

The button base 4 is stacked on the light source circuit board 2, and the button base 4 has light transmissivity. The button base 4 includes a plurality of first mounting portions 41 and a plurality of second mounting portions 42.

The button circuit board 5 is stacked on the button base 4, and the button circuit board 5 has light transmissivity. The button circuit board 5 includes a plurality of button lines 51 and a plurality of the plurality of button portions 51 respectively located above the first mounting portions 41. A through hole 52, and a plurality of second through holes 53 respectively located above the second mounting portions 42.

The pressing units 6 are respectively disposed above the button circuit board 5 corresponding to the key lines 51. Each of the pressing units 6 can be connected to the respective button lines 51 when pressed, and includes a key cap 61, a first through hole 52 and a corresponding second through hole 53 and pivotally connected to the button base. An adapter seat 62 between the seat 4 and the keycap 61, and an elastic member 63 disposed between the keycap 61 and the respective pressing line 51.

Each of the adapters 62 has a first combination portion 621 and a second combination portion 622 that are pivoted to each other. Each of the first combination portions 621 is pivotally connected to one of the respective key caps 61 and the respective first mounting portions 41 through the respective first through holes 52. Each of the second combination portions 622 is pivotally connected to the other of the respective keycaps 61 and the respective second mounting portions 42 through the respective second through holes 53. In this embodiment, each of the first combining portions 621 is pivotally connected to the respective key caps 61 through the respective first through holes 52 and movably connects the respective first mounting portions 41. Each of the second combination portions 622 is pivotally connected to the respective second mounting portions 42 through the respective second through holes 53 and movably connects the respective key caps 61.

Each of the elastic members 63 has a resilient portion 631 disposed on the top surface of the button circuit board 5 and corresponding to the respective button line 51, and a conductive portion 632 connecting the rebound portion 631 and the respective key cap 61. In the embodiment, the rebound portion 631 has a conical shape, and the conductive portion 632 has a cylindrical shape and is connected and passes through the top of the rebound portion 631.

Each of the conductive portions 632 can be pushed by the respective rebound portions 631 and the respective key caps 61 to change between the conductive position and the non-conductive position with respect to the key circuit board 5. In this embodiment, each of the button lines 51 forms an upper and lower spaced apart circuit. When the conducting portion 632 is in the conducting position (see FIG. 3), the conducting portion 632 is pressed against the respective button line 51 to make the button. The line 51 is connected to the open circuit and is turned on. When the conducting portion 632 is in the non-conducting position (see FIG. 2), the conducting portion 632 is away from the respective button lines 51 to make the button line 51 non-conductive.

In addition, the light generated by the light-emitting elements 3 passes through the button base 4 and the button circuit board 5, and finally passes through the surface of the key caps 61, so that the backlight keyboard of the present invention is insufficient in ambient light. It can also be used in case.

It should be noted that the backlight keyboard of the present invention is only assembled by stacking five layers of the light source circuit board 2, the light-emitting elements 3, the button base 4, the button circuit board 5, and the pressing unit 6. Compared with the six-layer structure layer disclosed in the prior art, the present invention can effectively simplify the assembly process and reduce the thickness, and can also allow the light emitted by the light-emitting elements 3 to penetrate therein to produce a backlight effect.

In summary, the button base of the backlight keyboard of the present invention can not only be pivoted and assembled as the pressing unit, but the number of structural layers of the keyboard is reduced to five layers, which effectively simplifies the assembly process and reduces the thickness, and also The light emitted by the light-emitting elements can be penetrated to produce a backlight effect, so that the purpose of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧Light source circuit board
3‧‧‧Lighting elements
4‧‧‧Key base
41‧‧‧First Installation Department
42‧‧‧Second Installation Department
5‧‧‧Keyboard
51‧‧‧Key line
52‧‧‧First perforation
53‧‧‧Second perforation
6‧‧‧ Press unit
61‧‧‧Key Cap
62‧‧‧Transfer seat
621‧‧‧First Combination Department
622‧‧‧Second Combination Department
63‧‧‧Flexible components
631‧‧‧Rebound Department
632‧‧‧Training Department

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of an embodiment of a backlight keyboard according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional view showing an embodiment of the present invention; A conductive portion of the embodiment is in a non-conducting position; and FIG. 3 is a cross-sectional view similar to FIG. 2, illustrating the conductive portion of the embodiment in a conducting position.

2‧‧‧Light source circuit board

3‧‧‧Lighting elements

4‧‧‧Key base

41‧‧‧First Installation Department

42‧‧‧Second Installation Department

5‧‧‧Keyboard

51‧‧‧Key line

52‧‧‧First perforation

53‧‧‧Second perforation

6‧‧‧ Press unit

61‧‧‧Key Cap

62‧‧‧Transfer seat

621‧‧‧First Combination Department

622‧‧‧Second Combination Department

63‧‧‧Flexible components

Claims (8)

A backlight keyboard comprising: a light source circuit board; a plurality of light emitting elements disposed on a top surface of the light source circuit board; a button base stacked on the light source circuit board; a button circuit board stacked on the button base The upper part of the seat includes a plurality of button lines; and a plurality of pressing units are respectively disposed above the button circuit board corresponding to the button lines, and each pressing unit can conduct the respective button lines when pressed. The backlight keyboard of claim 1, wherein the button base comprises a plurality of first mounting portions and a plurality of second mounting portions. The backlight keyboard of claim 2, wherein the button circuit board further comprises a plurality of first through holes respectively located above the first mounting portions, and a plurality of second through holes respectively located above the second mounting portions. The backlight keyboard of claim 3, wherein each pressing unit comprises a key cap, a first through hole and a second one of the second through hole and pivoted to the button base and the key cap An adapter, and an elastic member disposed between the keycap and the respective button line. The backlight keyboard of claim 4, wherein each of the adapters has a first combination portion and a second combination portion that are pivoted to each other, and each of the first combination portions is pivoted through the respective first through holes. Connected to one of the respective keycaps and the respective first mounting portions, each of the second combination portions being pivotally connected to the respective keycaps and the respective second mountings through the respective second through holes The other of the ministries. The backlight keyboard of claim 4, wherein each of the elastic members has a resilient portion disposed on a top surface of the button circuit board and corresponding to the respective button circuit, and a connection between the rebound portion and the respective key a conductive portion of the cap that can be pushed by the rebound portion and the key cap to change between a conductive position and a non-conductive position with respect to the button circuit board. When the conductive portion is in the conductive position, the conductive portion is in the conductive position. The conducting portion is pressed against the respective button lines to turn on the button line. When the conducting portion is in the non-conducting position, the conducting portion is away from the respective button lines to make the button line non-conductive. The backlit keyboard of claim 1, wherein the button base has light transmissivity. The backlight keyboard of claim 1, wherein the button circuit board has light transmissivity.