CN203812775U

CN203812775U - Thin-film keyboard with improved structure

Info

Publication number: CN203812775U
Application number: CN201420201431.XU
Authority: CN
Inventors: 刘凤森
Original assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Current assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-09-03
Anticipated expiration: 2024-04-24

Abstract

The utility model discloses a thin-film keyboard with an improved structure. The thin-film keyboard comprises an LED line layer, a light guide layer, a line signal layer, a dome switch layer and an outlook panel layer. The light guide plate comprises a PC base plate and a transparent UV point mounted on the surface of the PC base plate. The dome switch layer comprises a plurality of four-leg domes; the outlook panel layer is provided with plural key hats formed in a hot press molding manner. The introduction of four-leg domes provides good rebounding force and good hand-feel. Further, designed in this way, the height of a keyboard is effectively reduced, benefiting the development for a thinner keyboard. The key hats that are formed in a hot press molding manner on the outlook panel layer make a keyboard more compact and thicker so that it can be carried or used more conveniently. The thin-film keyboard provided by the utility model is truly waterproof and dustproof and materials for making key hats and manual mounting costs can be effectively reduced. In addition, the introduction of a transparent UV point on the surface of the PC base plate makes light travel through the PC base plate before being reflected or spreading away through the transparent UV point. In this manner, a higher light guide rate can be achieved.

Description

Structure improved membrane keyboard

Technical field

The utility model relates to art of keypads technology, refers in particular to a kind of structure improved membrane keyboard.

Background technology

The major requirement of current scientific and technological series products is carrying convenience, therefore how its overall appearance shape reaches light, thin, short and small is the emphasis of research and development design, but the design of personal electric product at present, often overall volume is excessive, does not meet the major requirement of current carrying convenience.Moreover, just finding keyboard structure design on the market at present, as computer keyboard or the keyboard for notebook computer used, include conducting wire plate, rubber key and keycap formation that a upper-lower casing, is combined in upper-lower casing inside, after each assembly assembling, its volume is excessive and heavy, and user cannot carry use as individual unusual fluctuating stock communication product by it, so product range of application and field are restricted.In order to overcome the above problems, on market, there is membrane keyboard.

Membrane keyboard, because volume is frivolous, is therefore widely used in various electronic products in recent years, and the sound that especially membrane keyboard produces when pressing is minimum, is applicable to button or the keyboard of various devices.What its shell fragment of traditional membrane keyboard adopted is circular shell fragment, and resilience force is poor, and highly higher, is unfavorable for keyboard slimming development; With and keycap adopts is the common keyboard keycap of injection mo(u)lding, make keycap height higher, be unfavorable for equally keyboard slimming development, and key cap material cost and man-made assembly cost also high; What its light guide structure adopted in addition is common light guide plate, and leaded light efficiency is lower, and light guide plate is thick.Therefore, tackle existing film keyboard construction and improve, to address the above problem.

Utility model content

In view of this, the utility model is for the disappearance of prior art existence, and its main purpose is to provide a kind of structure improved membrane keyboard, and it can effectively solve, and existing membrane keyboard is frivolous not, the inefficient problem of leaded light.

For achieving the above object, the utility model adopts following technical scheme:

A structure improved membrane keyboard, includes from lower to upper folded LED line layer, leaded light flaggy, line signal layer, elastic sheet switch layer and the appearance flaggy of establishing successively; This leaded light flaggy includes PC substrate and is printed on the transparent UV point on PC substrate surface; This elastic sheet switch layer includes a plurality of four pin shell fragments; On this appearance flaggy, by thermoforming way, be formed with a plurality of keycaps.

As a kind of preferred version, between described elastic sheet switch layer and appearance flaggy, be folded with intermediate interlayer, this intermediate interlayer is double faced adhesive tape material.

As a kind of preferred version, described a plurality of four pin shell fragments are fixed on layer of transparent shell fragment one side glue and form aforementioned elastic sheet switch layer.

As a kind of preferred version, described LED line layer includes pet substrate and is arranged at the LED luminous tube on pet substrate, on this pet substrate, be printed with LED luminescent line, this LED luminescent line and LED luminous tube are electrically connected, the back up adularescent ink backlight of this pet substrate.

As a kind of preferred version, the thickness of described pet substrate is 0.1mm, and the thickness of this white backlight ink is 6～8 μ m.

As a kind of preferred version, on described pet substrate, be provided with holddown groove, this LED luminous tube is fixed in holddown groove.

As a kind of preferred version, the surface printing of described pet substrate is useful on the glue that guarantees that LED line layer and the sealing of leaded light flaggy are pasted.

As a kind of preferred version, described line signal layer is single layer structure, and the lower surface of line signal layer is printed with the glue that guarantees that leaded light flaggy and the sealing of line signal layer are pasted.

As a kind of preferred version, described appearance flaggy is Ou Tutai material.

As a kind of preferred version, on described keycap, print white printing opacity ink and be formed with white printing opacity keyboard.

The utility model compared with prior art has obvious advantage and beneficial effect, particularly, and as shown from the above technical solution:

By adopting four pin shell fragments, replaced the circular shell fragment of tradition, make resilience force better, the feel of product is better, and effectively reduces product height, is conducive to keyboard slimming development; And, by adopting thermoforming way to be formed with a plurality of keycaps on outward appearance panel layer, replaced tradition by the mode of the single common keycap of injection mo(u)lding, make keyboard lighter and handier, thickness is thinner, carry and use conveniently, truly accomplishing water proof and dust proof, and can effectively reduce key cap material cost and man-made assembly cost; In addition, by the transparent UV point on PC substrate surface, light enter again transparent UV point refraction after by PC substrate and scattering luminous, leaded light efficiency is higher, and can reduce the thickness of leaded light flaggy.

For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, the utility model is elaborated.

Accompanying drawing explanation

Fig. 1 is the exploded view of the preferred embodiment of the utility model;

Fig. 2 is the partial section of the preferred embodiment of the utility model;

Fig. 3 is the enlarged diagram of LED line layer in the preferred embodiment of the utility model;

Fig. 4 is the enlarged diagram of leaded light flaggy in the preferred embodiment of the utility model;

Fig. 5 is the enlarged diagram of circuit signals layer in the preferred embodiment of the utility model;

Fig. 6 is the enlarged diagram of shell fragment switching layer in the preferred embodiment of the utility model;

Fig. 7 is the enlarged diagram of intermediate interlayer in the preferred embodiment of the utility model;

Fig. 8 is the enlarged diagram of outward appearance panel layer in the preferred embodiment of the utility model.

Accompanying drawing identifier declaration:

10, LED line layer 11, pet substrate

12, LED luminous tube 13, LED luminescent line

20, leaded light flaggy 21, PC substrate

22, transparent UV point 30, line signal layer

40, elastic sheet switch layer 41, four pin shell fragments

42, transparent shell fragment one side glue 50, appearance flaggy

51, keycap 511, white printing opacity keyboard

60, intermediate interlayer.

Embodiment

Please refer to shown in Fig. 1 to Fig. 8, the concrete structure that it has demonstrated the preferred embodiment of the utility model, includes from lower to upper folded LED line layer 10, leaded light flaggy 20, line signal layer 30, elastic sheet switch layer 40 and the appearance flaggy 50 of establishing successively.

As shown in Figure 3, this LED line layer 10 includes pet substrate 11 and is arranged at the LED luminous tube 12 on pet substrate 11, the thickness of this pet substrate 11 is 0.1mm, on this pet substrate 11, be printed with LED luminescent line 13, this LED luminescent line 13 is electrically connected with LED luminous tube 12, the back up adularescent ink (not shown) backlight of this pet substrate 11, the thickness of this white backlight ink is 6～8 μ m, it is not in order to lose light; And on this pet substrate 11, be provided with holddown groove (not shown), this LED luminous tube 12 is firmly fixed in holddown groove, and holddown groove is of a size of 1.6 * 3.2mm; In addition, the surface printing of this pet substrate 11 has glue (not shown), and it is pasted for guaranteeing LED line layer 10 and 20 sealings of leaded light flaggy.

As shown in Figure 2 and Figure 4, this leaded light flaggy 20 includes PC substrate 21 and is printed on the lip-deep transparent UV point 22 of PC substrate 21, and the thickness of this PC substrate 21 is 0.25mm, and it is high transparent PC material, the spacing of this transparent UV point 22 and not of uniform size, particularly, large from the spacing of the transparent UV point 22 close to LED luminous tube 12, particle is large, otherwise, spacing from the transparent UV point 22 away from LED luminous tube 12 is little, and particle is also little, light enter again transparent UV point 22 refractions after by PC substrate 21 and scattering luminous.

As shown in Figure 5, this line signal layer 30 is single layer structure, and simple in structure, the process-cycle is short, and product can be realized automated production, and the lower surface of line signal layer 30 is also printed with glue, to guarantee leaded light flaggy 20 and the 30 sealing stickup of line signal layer.

As shown in Figure 6, this elastic sheet switch layer 40 includes a plurality of four pin shell fragments 41, and in the present embodiment, the plurality of four pin shell fragments 41 are fixed on layer of transparent shell fragment one side glue 42 and form aforementioned elastic sheet switch layer 40, this four pin shell fragment 41 is metal material, its resilience force is between 40g～70g, possesses the function of button shearing pin simultaneously, makes handfeel of keys good, and simple in structure, in the present embodiment, four pin shell fragments 41 of two kinds of different size sizes have been used, not to be limited.

As shown in Figure 8, on this appearance flaggy 50, by thermoforming way, be formed with a plurality of keycaps 51, can be so that keyboard be lighter and handier, thickness is thinner, carry and use conveniently, and truly accomplishing water proof and dust proof, this appearance flaggy 50 is Ou Tutai (Autotype) material, on this keycap 51, print white printing opacity ink and be formed with white printing opacity keyboard 511, so that white printing opacity keyboard 511 is can printing opacity luminous.

And, as shown in Figure 2, between this elastic sheet switch layer 40 and appearance flaggy 50, be folded with intermediate interlayer 60, this intermediate interlayer 60 is double faced adhesive tape material, the upper surface of intermediate interlayer 60 is pasted and is connected with appearance flaggy 50, the lower surface of intermediate interlayer 60 is pasted and is connected with elastic sheet switch layer 40, and intermediate interlayer 60 is two-layer up and down for assembling fixed product, and can improve feel.

Design focal point of the present utility model is: by adopting four pin shell fragments, replaced the circular shell fragment of tradition, made resilience force better, the feel of product is better, and effectively reduces product height, is conducive to keyboard slimming development; And, by adopting thermoforming way to be formed with a plurality of keycaps on outward appearance panel layer, replaced tradition by the mode of the single common keycap of injection mo(u)lding, make keyboard lighter and handier, thickness is thinner, carry and use conveniently, truly accomplishing water proof and dust proof, and can effectively reduce key cap material cost and man-made assembly cost; In addition, by the transparent UV point on PC substrate surface, light enter again transparent UV point refraction after by PC substrate and scattering luminous, leaded light efficiency is higher, and can reduce the thickness of leaded light flaggy.

The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore any trickle modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.

Claims

1. a structure improved membrane keyboard, is characterized in that: include from lower to upper folded LED line layer, leaded light flaggy, line signal layer, elastic sheet switch layer and the appearance flaggy of establishing successively; This leaded light flaggy includes PC substrate and is printed on the transparent UV point on PC substrate surface; This elastic sheet switch layer includes a plurality of four pin shell fragments; On this appearance flaggy, by thermoforming way, be formed with a plurality of keycaps.

2. structure improved membrane keyboard according to claim 1, is characterized in that: between described elastic sheet switch layer and appearance flaggy, be folded with intermediate interlayer, this intermediate interlayer is double faced adhesive tape material.

3. structure improved membrane keyboard according to claim 1, is characterized in that: described a plurality of four pin shell fragments are fixed on layer of transparent shell fragment one side glue and form aforementioned elastic sheet switch layer.

4. structure improved membrane keyboard according to claim 1, it is characterized in that: described LED line layer includes pet substrate and is arranged at the LED luminous tube on pet substrate, on this pet substrate, be printed with LED luminescent line, this LED luminescent line and LED luminous tube are electrically connected, the back up adularescent ink backlight of this pet substrate.

5. structure improved membrane keyboard according to claim 4, is characterized in that: the thickness of described pet substrate is 0.1mm, and the thickness of this white backlight ink is 6～8 μ m.

6. structure improved membrane keyboard according to claim 4, is characterized in that: on described pet substrate, be provided with holddown groove, this LED luminous tube is fixed in holddown groove.

7. structure improved membrane keyboard according to claim 4, is characterized in that: the surface printing of described pet substrate is useful on the glue that guarantees that LED line layer and the sealing of leaded light flaggy are pasted.

8. structure improved membrane keyboard according to claim 1, is characterized in that: described line signal layer is single layer structure, and the lower surface of line signal layer is printed with the glue that guarantees that leaded light flaggy and the sealing of line signal layer are pasted.

9. structure improved membrane keyboard according to claim 1, is characterized in that: described appearance flaggy is Ou Tutai material.

10. structure improved membrane keyboard according to claim 1, is characterized in that: on described keycap, print white printing opacity ink and be formed with white printing opacity keyboard.