CN2470930Y - Pushbutton device - Google Patents

Abstract

A key unit comprises a key and an elastic film. The key has a bottom provided with a bump for contacting corresponding circuit. A layer of elastic film is continuously adhered on the key surface and periphery thereof; the elastic film has surface thereof printed or spray coated with a light impermeable layer having light permeable key characters thereon; a light-emitting layer driven by a power supply is printed or spray coated between the elastic film and the light impermeable layer. The key of the key unit has no height limitation, is less prone to light leakage, and prevents moisture introduction. Owning to the light emitting layer driven by the power supply, the light emitting intensity is strong, uniform, and diverse. The utility model also has the advantage of easy maintenance.

Description

Key device

The utility model relates to a kind of key device that is used on the electric equipment products.

Button on the electric equipment products such as general existing mobile phone or computer, as shown in Figure 1, it is the button on general existing mobile phone or the computer, mainly be button 1 ' the bottom paste the button basic unit 2 of an elastomeric material ', and button basic unit 2 ' the bottom be provided with salient point 2a ', with the contact circuit plate, the induction input information, but the button basic unit 2 made from elastomeric material ', the thickness of its rubber is up to 0.6mm, and the poor flexibility of rubber, when pushing the hard button, the salient point of its button and the contact of contact point are poor.Secondly, as shown in Figure 2, wherein, button 1 ' basic unit 2 ' bottom directly be provided with salient point 2a ', with the contact circuit plate, the induction input information; Because of button basic unit 2 ' do not have elasticity, when pushing the hard button, the contact of the salient point of its button and related circuit contact point is poor, and button very easily breaks, light leak.In addition; as shown in Figure 3; its be at printing opacity button 1 ' on behind printing or spraying one deck printing opacity printing ink 1a ' and the protective layer 1b '; plate key symbols 1d ' such as layer of metal plated film 1c ' and engraving character or pattern again; at last; be coated with and be covered with second layer protective layer 1e '; but above-mentioned button; must the button 1 of printing opacity ' on printing or spraying one deck printing opacity printing ink 1a '; protective layer 1b ' and metal coating 1c '; and the key symbols 1d ' of engraving character or pattern; second layer protective layer 1e ' waits processing, and its fabrication schedule is loaded down with trivial details, and because elasticity is not had in button basic unit 2 '; when pushing the hard button, the salient point 1a ' of its button is poor with the contact of contact point.Again because light from the light-emitting diode below the button, is located printing opacity by key symbols 1d ' again, its luminance difference and inhomogeneous, light source colour is dull and change and be difficult for, and light-emitting diode is cemented on the substrate, if when breaking down, need to change substrate, not easy-maintaining and assembling, its cost height; If often place the high mobile phone of wetness, aqueous vapor can be infiltrated inner via the trickle space of button and phone housing, and influences the normal operation of mobile phone interior circuit board.

Main purpose of the present utility model is to provide a kind of key device that can not be subjected to moisture effect.

Another purpose of the present utility model is to provide a kind of maintenance and assembled key device be convenient to.

For achieving the above object, the utility model is taked following technical measures:

A kind of key device of the present utility model includes a button; Also comprise: an elastic film;

The bottom of button is provided with a salient point that is used to contact related circuit, the surface of button forms one deck elastic film, elastic film paste with being continuous shape button the surface and all around, the surface printing of elastic film or spraying one deck light non-transmittable layers are on the light non-transmittable layers and have a key symbols of light-permeable.

Wherein, printing or spray the luminescent layer of one deck between described elastic film surface and described light non-transmittable layers by a power drives.

Compared with prior art, the utlity model has following effect:

Because the surface of the utility model key device is provided with one deck elastic film, elastic film stick in button the surface and all around, because elastic film closely sticks in keytop and all around, elastic film has better elastic, its height that forms button is unrestricted, and be difficult for breaking, be difficult for light leak, and can prevent that sealing or aqueous vapor enter.

Again since between elastic film surface and light non-transmittable layers printing or spraying one deck by the luminescent layer of power drives, this luminescent layer by a power supply through the frequency converter driven for emitting lights, the luminous intensity of this luminescent layer is strong and even, and the luminescent layer kind is many, rich variation, and when button breaks down, only need change button, easy-maintaining and assembling, and can save the energy.

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present utility model:

The accompanying drawing simple declaration:

Fig. 1: the schematic diagram of existing button;

Fig. 2: the schematic diagram of existing another kind of button;

Fig. 3: the cutaway view of existing luminous button;

Fig. 4: the floor map of the utility model embodiment;

Fig. 5: the floor map of another embodiment of the utility model;

Fig. 6: the schematic diagram of luminescence unit among the utility model embodiment;

As shown in Figure 4, key device of the present utility model mainly comprises: button 1, elastic film 2; The surface 11 of button 1 is adhesive with an elastic film 2, and its bottom surface 12 is provided with salient point 13; Elastic film 2 sticks in the surface 11 of button and all around with being continuous shape, and surface 21 printings of elastic film 2 or spraying one deck light non-transmittable layers 22, on the light non-transmittable layers 22 and have a key symbols 221 of light-permeable.

Utilize said apparatus, when flicking hard button 1, the salient point 13 of button 1 can effectively contact with corresponding contact point, and can make the seamless state of formation between button 1 and circuit board, influences Circuits System to prevent water or aqueous vapor from entering.

Another example of the utility model button, shown in Fig. 5,6, it mainly includes one group of button 1, an elastic film 2 and a light-emitting component 3, light-emitting component 3 comprises luminescent layer 31, frequency converter 33 and driving power 32, its luminescent layer 31 can be multilayer, the printing or be sprayed between the surface 21 and light non-transmittable layers 22 of elastic film 2, luminescent layer 31 connects a power supply 32, frequency converter 33, and the printing of the surface 311 of luminescent layer 31 or spraying one deck light non-transmittable layers 22 are on the light non-transmittable layers 22 and have a key symbols 221 of light-permeable.

Utilize above-mentioned luminescent layer 31, when power-on 32, luminous through frequency converter 33 driven for emitting lights layers 31, the light that this device produces can be from key symbols 221 place's printing opacities, and the brightness of its light is strong, and evenly, and the many and rich variation of the color category of luminescent layer 31 is than using light-emitting diode more to save the energy, when button 1 breaks down, also only must change button 1, so easy-maintaining and assembling.

Foregoing is to utilize embodiment that technical characterictic of the present utility model is described, is not to be used to limit protection range of the present utility model, even there is the people to change slightly on the basis of the utility model design, must belong in the protection range of the present utility model.

Claims (2)

1, a kind of key device includes button; It is characterized in that, also comprise: elastic film;

The bottom of button is provided with a salient point that is used to contact related circuit, the surface of button forms one deck elastic film, elastic film paste with being continuous shape button the surface and all around, the surface printing of elastic film or spraying one deck light non-transmittable layers are on the light non-transmittable layers and have a key symbols of light-permeable.

2, key device according to claim 1 is characterized in that, printing or spraying one deck are by the luminescent layer of a power drives between described elastic film surface and described light non-transmittable layers.

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