CN201345308Y

CN201345308Y - Illuminating keyboard

Info

Publication number: CN201345308Y
Application number: CNU2009200025357U
Authority: CN
Inventors: 叶亮达; 张贤灿
Original assignee: Darfon Electronics Suzhou Co Ltd; Darfon Electronics Corp
Current assignee: Darfon Electronics Suzhou Co Ltd; Darfon Electronics Corp
Priority date: 2009-02-03
Filing date: 2009-02-03
Publication date: 2009-11-11
Anticipated expiration: 2019-02-03

Abstract

Disclosed is an illuminating keyboard which comprises a supporting board, a light guide plate, a reflecting plate circuit module, at least one light source, at least one elastic body, keystrokes and an outer casing body for holding all components, wherein the supporting board, the light guide plate and the reflecting plate circuit module are sequentially lapped from top to down. Moreover, the supporting board is provided with at least one first hole, the light guide plate is provided with at least one second hole, the reflecting plate circuit module is formed by a reflecting plate and a circuit, the light source provides light to radiate into the light guide plate, the elastic body is arranged inside the corresponding first hole and the second hole, the bottom portion of the elastic body abuts to the reflecting plate circuit module, the elastic body is provided with an activation column, and the keystrokes are disposed at the top portion of the elastic body. When the keystrokes are pressed and the elastic body is extruded to sink, the bottom portion of the activation column can be driven to contact with the reflecting plate circuit module and the circuit can be touched to form electric conduction.

Description

Illuminated keyboard

[technical field]

The utility model is relevant for a kind of keyboard, in particular to a kind of illuminated keyboard.

[background technology]

Keyboard is the input unit that the most generally uses at present, it can be applied to the electronic equipment that computer, personal digital assistant, mobile phone or any needs are provided with the button input, in addition, the keyboard that adopts thin film switch (thin film switch) is because more slimming of volume, and the sound that is produced when pushing is less, therefore is extensive use of by industry.And keyboard is except possessing the basic function as input interface, and visible on the market at present illuminated keyboard its role is to help the user in the not good environment of illumination, still accurately pressing keys position and unlikely input error.

See also the press-key structure of the illuminated keyboard of prior art shown in Figure 1, this press-key structure 10 is from bottom to top in regular turn by base plate 11, reflector plate 12, light guide sheet 13, thin film switch 14, an anti-dazzling screen 15 and a supporting bracket 16 stack layer by layer and form, be provided with elastomer 17 in this supporting bracket 16, these elastomer 17 end faces are provided with keycap 171, these elastomer 17 bottom surfaces are provided with start post 172, between these keycap 171 bottom surfaces and this supporting bracket 16, be articulated with a scissor structure 18, this scissor structure 18 is interlocked by two and first support 181 and second support 182 of pivot joint mutually constitute, the top of this first support 181 and second support 182 is articulated in this keycap 171 bottom surfaces, and the bottom of this first support 181 and second support 182 is articulated in this supporting bracket 16; This anti-dazzling screen 15 and this supporting bracket 16 are respectively equipped with hollow part 151 corresponding to these elastomer 17 placements, 161, this hollow part 151, an effect of 161 is, when the user pushes this keycap 171 and oppresses this elastomer 17 simultaneously, can drive this start post 172 sinks by this hollow part 151,161, oppressing this thin film switch 14 again electrically conducts it, this hollow part 151,161 another effects are, be provided with the light source (not shown) in these light guide sheet 13 1 sides, this light source can provide light to inject this light guide sheet 13, simultaneously via the reflex of reflector plate 12 with light by this hollow part 151,161 penetrate, and make the generation illumination effect.

By said structure as can be known, the structure that known illuminated keyboard 10 stacks layer by layer, member is very complicated, not only cost height, assembling are time-consuming, and thickness is thick, and when said structure is assembled in the shell body (not shown) of illuminated keyboard, its thickness is thicker, can't meet product slimming requirement.

[utility model content]

Because the shortcoming of prior art the utility model proposes a kind of illuminated keyboard, can simplify member, reduction keyboard thickness.

For achieving the above object, the utility model proposes a kind of illuminated keyboard, comprise supporting bracket, light guide sheet, the reflector plate circuit module, at least one light source, at least one elastomer, the shell body of button and ccontaining above-mentioned member, this supporting bracket, light guide sheet and reflector plate circuit module from top to bottom stack in regular turn layer by layer, this supporting bracket is provided with at least one first hole, this light guide sheet has at least one second hole, this reflector plate circuit module is made of reflector plate and circuit, this light source provides light to inject light guide sheet, this elastomer is arranged in first and second corresponding hole, and the elastomer base abuts is in the reflector plate circuit module, this elastomer has the start post, and this button is arranged at the elastomer top; When pressing keys and the sinking of extruding elastomer, can drive the start column bottom and contact, and the formation of shake-up circuit electrically conducts with the reflector plate circuit module.

Benefit of the present utility model is compared with prior art can simplify member, reduction keyboard thickness.

[description of drawings]

Fig. 1 is the structural representation of the illuminated keyboard of prior art.

Fig. 2 is first kind of execution mode structural representation of press-key structure of the present utility model.

Fig. 3 is second kind of execution mode structural representation of press-key structure of the present utility model.

Fig. 4 is the third execution mode structural representation of press-key structure of the present utility model.

Fig. 5 is the 4th kind of execution mode structural representation of press-key structure of the present utility model.

[embodiment]

See also the press-key structure of first kind of execution mode of the utility model shown in Figure 2, this press-key structure 20 comprises supporting bracket 21, this supporting bracket 21 is provided with first hole 211, be provided with light guide sheet 22 in these supporting bracket 21 bottom surfaces, this light guide sheet 22 has second hole 221, the position of this second hole 221 is corresponding mutually with this first hole 211, be provided with reflector plate circuit module 23 in these light guide sheet 22 bottom surfaces, this reflector plate circuit module 23 is made of reflector plate 231 and circuit 232, and this circuit 232 is arranged in the end face of this reflector plate 231; Secondly, be provided with elastomer 24 in first hole 211 in this in correspondence and second hole 221, these elastomer 24 base abuts are in reflector plate circuit module 23, be provided with start post 241 in these elastomer 24 central interior, the bottom of this start post 241 has electric conductor 242, when this elastomer 24 is in not pressured state shown in Figure 2, these electric conductor 242 bottoms and this circuit 232 have certain distance D1, that is this electric conductor 242 does not electrically conduct with this circuit 232, be provided with a keycap 243 in these elastomer 24 tops, these keycap 243 bottoms are provided with scissor structure 25, this scissor structure 25 is interlocked by two and first support 251 and second support 252 of pivot joint mutually constitute, the top of this first support 251 and second support 252 is articulated in this keycap 243 bottom surfaces, and the bottom of this first support 251 and second support 252 is articulated in this supporting bracket 21.In addition, the utility model more comprises at least one light source (not shown), this light source is injected this light guide sheet 22 in order to light to be provided, reflex via reflector plate 231 is penetrated light by this first hole 211 and second hole 221 simultaneously, the position that is provided with of this light source there is no certain limitation, according to actual required and design, be arranged at the side of this light guide sheet 22 usually.

Above-mentioned press-key structure 20 is arranged in the shell body (not shown), by members such as ccontaining above-mentioned this supporting bracket 21 of this shell body, light guide sheet 22, reflector plate circuit module 23, elastomer 24, keycap 243 and light sources, to constitute complete illuminated keyboard, what must emphasize is, present embodiment only demonstrates a press-key structure in the illuminated keyboard, know as common people, actual keyboard not only has only a button usually, the structure of execution mode can be applied to all buttons of keyboard among the figure, only explains with a button at this.

By structure shown in Figure 2 as can be known, the characteristics of present embodiment are:

One, this supporting bracket 21 has and supports scissor structure 25 and shading double action, therefore can save cost that anti-dazzling screen is set and assembling man-hour, can reduce the thickness of anti-dazzling screen simultaneously again;

Two, this light guide sheet 22 is provided with this second hole 221, and what can make this elastomer 24 is provided with can the descend thickness of this light guide sheet 22 of height, that is the keyboard whole height can reduce the thickness of this light guide sheet 22;

Three, the utility model directly is arranged at the end face of reflector plate 231 with circuit 232, that is substitutes the soft plate body of known flexible printed wiring boards by this reflector plate 231, therefore can save the cost that soft plate body is set, and can reduce the thickness of soft plate body simultaneously again;

Four, with this reflector plate 231 as bottom, base plate (this base plate 11 as shown in Figure 1) is not set, but with the shell body of ccontaining this press-key structure 20 directly as base plate, so can save the cost that base plate is set, can reduce the thickness of base plate simultaneously again.

In view of the above, Fig. 2 and Fig. 1 existing structure are contrasted as can be known, these press-key structure 20 thickness of the present utility model can reduce significantly, therefore can make that the thickness of illuminated keyboard is effectively reduced.When the user pushed this keycap 243, this elastomer 24 was sunk by keycap 243 extruding, and the electric conductor 242 that drives these start post 241 bottoms contacts formation and electrically conducts with circuit 232.

See also Fig. 3 execution mode, this execution mode is based on Fig. 2 execution mode, this press-key structure 30 comprises the supporting bracket 31 that from bottom to top stacks in regular turn, light guide sheet 32, reflector plate 33, this supporting bracket 31 is provided with first hole 311, this light guide sheet 32 has second hole 321, in this first hole 311 and second hole 321, be provided with elastomer 34, these elastomer 34 central interior are provided with a start post 341, when this elastomer 34 is in not pressured state shown in Figure 3, these start post 341 bottoms and this reflector plate 33 have certain distance D2, be provided with keycap 343 in these elastomer 34 tops, be articulated with a scissor structure 35 between this keycap 343 and this supporting bracket 31, this scissor structure 25 is interlocked by two and first support 351 and second support 352 of pivot joint mutually constitute; The effect that can reach about above-mentioned member does not repeat them here, the characteristics of present embodiment are that the bottom surface of this reflector plate 33 is provided with a thin film switch 36, this thin film switch 36 comprises two films 361,362, be respectively equipped with electric conductor 363,364 in the corresponding position of these two films, 361,362 opposite faces, when pushing this keycap 343, can drive these start post 341 bottoms and suppress the electric conductor 363,364 of two films 361,362 and be in contact with one another to form and electrically conduct.Present embodiment is explanation, and framework provided by the utility model also is applicable to thin film switch 36, and the thickness of Fig. 3 execution mode may be slightly larger than execution mode shown in Figure 2, but compared to Fig. 1 prior art constructions, present embodiment still can effectively be reduced thickness.

See also Fig. 4 execution mode, present embodiment complex chart 2, execution mode shown in Figure 3, this press-key structure 40 comprises supporting bracket 41, light guide sheet 42, reflector plate 43, elastomer 44, start post 441, keycap 443, scissor structure 45, the characteristics of present embodiment are that the bottom surface of this reflector plate 43 is provided with circuit board 46, this circuit board 46 is made of body 461 and circuit 462, this circuit 462 is arranged at this body 461 end faces, this body 461 can be soft or rigid material, be provided with the 3rd hole 431 in this reflector plate 43 corresponding to start post 441 positions, the bottom of this start post 441 has electric conductor 442; When pushing this keycap 443, the electric conductor 442 that can drive these start post 441 bottoms contacts with circuit 462 to form through the 3rd hole 431 and electrically conducts, these start post 441 length can appropriateness extend, the length of its lengthening is not limit, when this elastomer 34 places not during pressured state, the unlikely contact with this circuit 462 in these electric conductor 442 bottoms gets final product.Present embodiment is explanation, and framework provided by the utility model also is applicable to general circuit plate 46, and the thickness of present embodiment may be slightly larger than execution mode shown in Figure 2, but compared to Fig. 1 existing structure, present embodiment still can effectively be reduced thickness.

Above-mentioned Fig. 2 is to different execution modes shown in Figure 4, and one of its common ground is that its supporting

bracket

21,31,41 has the

scissor structure

25,35,45 of support and shading double action, but is when improving shaded effect, anti-dazzling screen to be set still; See also Fig. 5 execution mode, this press-key structure 20A is based on Fig. 2 execution mode, the characteristics of present embodiment be supporting bracket 21 and light guide sheet 22 between be provided with anti-dazzling screen 26, correspond to this first hole 211 and second hole, 221 positions are provided with the 3rd hole 261 in this anti-dazzling screen 26, this elastomer 24 is arranged in this first hole 211, second hole 221 and the 3rd hole 261, owing to add this anti-dazzling screen 26, so the length of this start post 241 or electric conductor 242 can appropriateness extend.In addition, under the situation of space permission, also can base plate 27 be set, to improve intensity in these reflector plate circuit module 23 bottom surfaces.This anti-dazzling screen 26 and base plate 27 may be implemented in Fig. 3 and the execution mode structure shown in Figure 4 equally.

Take a broad view of above-mentioned different execution mode and can know that the illuminated keyboard that the utility model provides can be simplified member really, reduction keyboard thickness.

Claims

1. illuminated keyboard is characterized in that comprising:

Supporting bracket, this supporting bracket are provided with at least one first hole;

Light guide sheet, this light guide sheet are arranged at this supporting bracket bottom surface, and this light guide sheet has at least one second hole;

The reflector plate circuit module, this reflector plate circuit module is arranged at this light guide sheet bottom surface, and this reflector plate circuit module is made of reflector plate and circuit;

At least one light source, this light source provide light to inject this light guide sheet;

At least one elastomer, this elastomer are arranged in corresponding first hole and second hole, and

This elastomer base abuts is in this reflector plate circuit module, and this elastomer has the start post;

Keycap, this keycap are arranged at this elastomer top;

Shell body, this shell body is in order to ccontaining above-mentioned this supporting bracket, light guide sheet, reflector plate circuit module, light source, elastomer and keycap;

When pushing this keycap, this elastomer is sunk by keycap extruding, and drives this start column bottom and contact with this reflector plate circuit module, and the formation of shake-up circuit electrically conducts.

2. illuminated keyboard according to claim 1 is characterized in that:

The circuit arrangement of this reflector plate circuit module is in the end face of this reflector plate

The bottom of this start post has electric conductor;

When pushing this keycap, the electric conductor and the formation of this circuit contacts that drive this start column bottom electrically conduct.

3. illuminated keyboard according to claim 1 is characterized in that:

The circuit of this reflector plate circuit module is a thin film switch, this thin film switch is arranged at this reflector plate bottom surface, this thin film switch comprises two films, corresponding position in this two films opposite face is respectively equipped with an electric conductor, when pushing this keycap, drive this start column bottom and suppress electric conductor on this two film and be in contact with one another to form and electrically conduct.

4. illuminated keyboard according to claim 1 is characterized in that:

The circuit arrangement of this reflector plate circuit module is on circuit board, and this circuit board is arranged at this reflector plate bottom surface, is provided with the 3rd hole at this reflector plate corresponding to this start post position;

The bottom of this start post has electric conductor;

When pushing this keycap, the electric conductor that drives this start column bottom electrically conducts through the 3rd hole and the formation of this circuit contacts.

5. illuminated keyboard according to claim 1, it is characterized in that being provided with anti-dazzling screen between this supporting bracket and this light guide sheet, be provided with one the 4th hole corresponding to this first hole and second hole location on this anti-dazzling screen, this elastomer is arranged in this first hole, second hole and the 4th hole.

6. illuminated keyboard according to claim 1, it is characterized in that this keycap bottom is provided with scissor structure, staggered and first support that articulate mutually and second are configured to this scissor structure by two, the top of this first support and second support is articulated in this keycap bottom surface, and the bottom of this first support and second support is articulated in this supporting bracket.

7. illuminated keyboard according to claim 1 is characterized in that the bottom surface of this reflector plate circuit module is provided with base plate.

8. illuminated keyboard according to claim 1 is characterized in that this light source is a light-emitting diode.