CN2374912Y

CN2374912Y - Elastomer-free press key

Info

Publication number: CN2374912Y
Application number: CN 99210753
Authority: CN
Inventors: 戴福尘
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-10
Filing date: 1999-05-10
Publication date: 2000-04-19
Anticipated expiration: 2009-05-10

Abstract

The utility model relates to an elastomer-free press key, which comprises an upper soft cover which is made of elastic soft material. The upper soft cover comprises a main body which is provided with a plurality of bulgy press key parts in integral forming. When the press key parts of the upper soft cover are pressed down, the press key parts contact and press the contacts of a thin film of a soft circuit to conduct the circuit and convey signals to a host machine. When the press key parts are released, the press key parts can be reset to the original positions by using self elasticity. The utility model has the advantages that the whole structure of a keyboard is much simplified, the cost is greatly reduced, the press key travel is reduced, the arranged height of the press key is reduced, therefore, the operation requirements are satisfied.

Description

Exempt from elastomeric button

The utility model relates to a kind of elastomeric button of exempting from.Especially refer to a kind of devices such as keyboard, computing machine that are applicable to, elastic body can be given the abridged key structure.

As shown in Figure 1, the button of existing keyboard mainly includes a plurality of keycap 10a and elastic body 11a forms, under elastic body 11a, can be provided with hard floor 12a, be provided with a circuit board 13a in base plate 12a top, on one end and connecting line to a transmission line, elastic body 11a is positioned at circuit board 13a top, go up one-body molded a plurality of elasticity shake-up body 14a that have in elastic body 11a, these elasticity are touched body 14a and corresponding to the contact 15a on the circuit board 13a, other is provided with a hard loam cake 16a, this loam cake 16a goes up corresponding to these elasticity shake-up bodies 14a position and is provided with plurality of openings 17a, in this perforate 17a keycap 10a is installed respectively, makes elasticity touch body 14a and place in these keycaps 10a, the user is when pushing keycap 10a, together driving elasticity touches body 14a and compresses contact 15a on the circuit board 13a downwards, and the formation conducting state, make signal by transmission line to main frame, loosen keycap 10a, then can utilize elasticity to touch the elasticity of body 14a, button 10a is replied original position.

Above-mentioned existing button, must be provided with the strength of elastic body 11a in order to provide button 10a upwards to reset that a plurality of elasticity are touched body 14a is provided, this elastic body 11a is arranged so that the keyboard complicated integral structure is many, and elastic body 11a manufacturing cost is higher, it is many to make that relatively whole keyboard cost improves, moreover, elasticity is touched body 14a and is had certain altitude, make button 10a have big stroke, and the height that button is provided with increases many, relative keyboard integral body need have higher height, is difficult to meet the frivolous mini requirement of modern product.

The purpose of this utility model provides a kind of elastomeric button of exempting from, it comprises a soft loam cake, this soft loam cake is made by the rubber-like soft materials, cover the one-body molded a plurality of button portion that is provided with on this is soft, can utilize the elasticity of the button portion of soft loam cake itself that the strength that upwards resets is provided, so do not need to be provided with again elastic body, it is many to make the keyboard one-piece construction oversimplify, and make whole keyboard cost significantly reduce, and do not touch body because elasticity need not be set, make key stroke to reduce, and the height of button setting is minimized, relative keyboard whole height can effectively reduce, to meet the frivolous mini requirement of modern product.

For achieving the above object, the utility model is taked following design proposal: thisly exempt from elastomeric button, it comprises a soft loam cake, this soft loam cake is made by the rubber-like soft materials, this soft loam cake is to have a body, and this body is provided with one-body molded and protruding upward a plurality of hollow form button portion.

Described soft loam cake below is provided with a lower film, it is made by the rubber-like soft materials, this lower film is to have a body, this body is provided with one-body molded and protruding upward a plurality of hollow form button portion, and the button portion of this lower film is arranged in the button portion of this soft loam cake.

Be provided with a plurality of lamellar bodies between described soft loam cake and the lower film, the undersized of these lamellar bodies to be arranged at the button portion inside of soft loam cake, can be printed with each button font in the button portion of soft loam cake on the surface of lamellar body.

The button portion inner face or the surface of described lower film can be provided with the button font.

The button portion inner face or the surface of described soft loam cake can be provided with the button font.

A plurality of lamellar bodies, a lower film, a flexible circuit film and a base plate can further be set under the described soft loam cake form a keyboard altogether.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the three-dimensional exploded view of existing keyboard

Fig. 2 exempts from the stereographic map of elastomeric button for the utility model

Fig. 3 exempts from the three-dimensional exploded view of elastomeric button for the utility model

Fig. 4 exempts from the sectional view of elastomeric button for the utility model

Fig. 5 exempts from the user mode synoptic diagram of elastomeric button for the utility model

Fig. 6 exempts from the stereographic map of elastomeric button computing machine for the utility model

Fig. 7 exempts from the three-dimensional exploded view of elastomeric button computing machine for the utility model

As Fig. 2, Fig. 3, shown in Figure 4, the utility model provides a kind of elastomeric button of exempting from, especially refer to a kind of keyboard that is applicable to, the key structure of device such as computing machine, present embodiment is the key structure that is applied to keyboard, it includes a soft loam cake 10, this soft loam cake 10 is made by the rubber-like soft materials, this soft materials can be TPU (Thermoplastic Polyuret hane film, the Polyurethane Thermoplastic Elastomer film) material, this soft loam cake 10 has the body 11 that without exception is rectangle, and this body 11 is provided with one-body molded and protruding upward a plurality of hollow rectangular shape button portion 12; By above-mentioned promptly constitute exempt from elastomeric button.

These soft loam cake 10 belows from top to bottom can further be provided with a plurality of lamellar bodies 30, a lower film 20, a flexible circuit film 50 and a base plate 40 etc. and form a complete keyboard altogether, this lower film 20 is to be located at soft loam cake 10 belows, and lower film 20 is also made by the rubber-like soft materials.This lower film 20 has the body 21 that without exception is rectangle, this body 21 is provided with one-body molded and protruding upward a plurality of hollow rectangular shape button portion 22, the button portion 22 of this lower film 20 is arranged in the button portion 12 of this soft loam cake 10, and the periphery of this soft loam cake 10 and lower film 20 and extension have

joint portion

13,23, can stick in the high frequency mode with below one base plate, 40 peripheries, 10 no any holes of its base plate 40 and soft loam cake, so whole keyboard appearance forms closed, and has good waterproof effect.This base plate 40 can hard or soft materials made, if made, then can constitute a soft keyboard with soft materials, be all softly by these members, make keyboard furl, more convenient on carrying.

Between soft loam cake 10 and lower film 20, be provided with a plurality of lamellar bodies 30 that generally are brachmorphy, the undersized of these lamellar bodies 30 is in the button portion 12 of soft loam cake 10, so that place button portion 12 inside of soft loam cake 10, and on the surface of lamellar body 30, can be printed with each button font (as English alphabet A, B, C or phonetic symbol ㄅ, ㄆ, Jiong or numeric character 1,2,3 etc.), with stamping technology, this lamellar body 30 dashed be located in the button portion 12 of soft loam cake 10, make each button font be positioned at each button portion 12, so, can know from the top of soft loam cake 10 and to find out each button font, certainly, also each button font can be printed on the button portion 12 of soft loam cake 10 or

lower film

20,22 surfaces or

button portion

12,22 inner faces.

These base plate 40 tops are provided with a flexible circuit film 50, this flexible circuit film 50 includes circuit film 51, circuit film 52 on one, in two circuit films 51, be respectively equipped with corresponding circuit 53 on 52,54 and a plurality of

contact

55,56, two circuit films 51, be laid with an insulation film 57 between 52, insulation film 57 is corresponding to these

contacts

55,56 position is provided with perforation 571, make two circuit films 51, contact 55 on 52,56 can contact conducting, on these flexible circuit film 50 1 ends and connection line to a minitype circuit board 58, this circuit board 58 is connected with a transmission line 59 again to main frame.

As shown in Figure 5, when the button portion 12 of soft loam cake 10 is depressed, button portion 12 promptly compresses the contact 55 of flexible circuit film 50 downwards, 56 contacts, and formation circuit turn-on state, make signal transfer to main frame by transmission line 59, loosen button portion 12, then can utilize the elasticity of button portion 12 itself, original position is replied by button portion 12, and the strength that the utility model can utilize button portion 12 elasticity of soft loam cake 10 own to provide button upwards to reset is not so need to be provided with elastic body again, it is many to make the keyboard one-piece construction oversimplify, and make whole keyboard cost significantly reduce, moreover, because need not being provided with elasticity, the utility model do not touch body, make key stroke to reduce, and the height of button setting is minimized, and relative keyboard whole height can effectively reduce, to meet the frivolous mini requirement of modern product.

As Fig. 6, shown in Figure 7, be for being applied to the key structure of computing machine, it includes a soft loam cake 10, this soft loam cake 10 has a body 11, this body 11 is provided with a plurality of button portion 12, also can arrange in pairs or groups a plurality of lamellar bodies 30, a lower film 20, a flexible circuit film 50 and base plates 40 etc. of the soft loam cake 10 of this button are formed a complete computing machine altogether, because of its structure is identical with the embodiment of above-mentioned keyboard, are stated so no longer tire out.

The utility model has the advantages that: can so that the keyboard overall structure oversimplify many, and so that whole keyboard Cost significantly reduces, and owing to the elastic touch body need be set, so that key stroke can reduce, and button The height that arranges is minimized, and relative keyboard whole height can effectively reduce, and is light to meet modern product Thin mini requirement.

Claims

1, a kind ofly exempts from elastomeric button, it is characterized in that: comprise a soft loam cake, this soft loam cake is made by the rubber-like soft materials, and this soft loam cake is to have a body, and this body is provided with one-body molded and protruding upward a plurality of hollow form button portion.

2, according to claim 1ly exempt from elastomeric button, it is characterized in that: soft loam cake below is provided with a lower film, it is made by the rubber-like soft materials, this lower film is to have a body, this body is provided with one-body molded and protruding upward a plurality of hollow form button portion, and the button portion of this lower film is arranged in the button portion of this soft loam cake.

3, according to claim 2ly exempt from elastomeric button, it is characterized in that: be provided with a plurality of lamellar bodies between soft loam cake and the lower film, the undersized of these lamellar bodies is in the button portion of soft loam cake, to be arranged at the button portion inside of soft loam cake, can be printed with each button font on the surface of lamellar body.

4, according to claim 1ly exempt from elastomeric button, it is characterized in that: the button portion inner face or the surface of lower film can be provided with the button font.

5, according to claim 1ly exempt from elastomeric button, it is characterized in that: the button portion inner face or the surface of soft loam cake can be provided with the button font.

6, according to claim 1ly exempt from elastomeric button, it is characterized in that: a plurality of lamellar bodies, a lower film, a flexible circuit film and a base plate can further be set under the soft loam cake form a keyboard altogether.