CN203205306U

CN203205306U - Double-layered membrane keyboard

Info

Publication number: CN203205306U
Application number: CN 201320076355
Authority: CN
Inventors: 刘凤森
Original assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Current assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Priority date: 2013-02-19
Filing date: 2013-02-19
Publication date: 2013-09-18
Anticipated expiration: 2023-02-19

Abstract

The utility model discloses a double-layered membrane keyboard. The double-layered membrane keyboard comprise an upper membrane and a lower membrane, wherein the upper membrane and the lower membrane are respectively provided with conductive circuits; pressing contact points which are corresponding to each other are arranged on the conductive circuits respectively; and insulating projections for isolating the upper membrane and the lower membrane are arranged at parts on the conductive circuit of the lower membrane besides the pressing contact points. When the upper membrane and the lower membrane close to each other, pressing contact points on the upper membrane and the lower membrane are in electrical conduction, and the conductive circuits beside the pressing contact points are isolated by the insulating projections. Therefore, an insulating UV is printed on the lower membrane for replacing an isolation layer in a conventional membrane keyboard, the upper membrane and the lower membrane can thus have better insulating effect in case of no pressure, the production process of membrane keyboards is simplified, and the production cost of the membrane keyboard is reduced.

Description

The bilayer film keyboard

Technical field

The utility model relates to the art of keypads technology, refers in particular to a kind of bilayer film keyboard.

Background technology

The major requirement of present scientific and technological series products is carrying convenience, therefore how its overall appearance shape reaches light, thin, short and small then is the emphasis of research and development design, but the at present design of personal electric product, often overall volume is excessive, does not meet the major requirement of present carrying convenience.Moreover, just at present on the market finding keyboard structure design, 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 the user can't carry use as individual unusual fluctuating stock communication product with it, so product range of application and field are restricted.In order to overcome the above problems, membrane keyboard has appearred on the market.

Therefore membrane keyboard is widely used in various electronic products in recent years because volume is frivolous, and especially the sound that produces when pressing of membrane keyboard is minimum, is applicable to button or the keyboard of various devices.Traditional membrane keyboard usually has double-layer films up and down and is sandwiched in separator between two films, be respectively arranged with up and down the push contact that corresponds to each other on the double-layer films, corresponding push contact is provided with through hole on separator, when user's application of force make up and down double-layer films mutually near the time, then the push contact on the double-layer films will contact with each other and then electrically conducts by through hole up and down.But, when producing this membrane keyboard, the complex manufacturing of separator, job insecurity and consumption China ink.Therefore, the existing film keyboard construction of reply improves, to address the above problem.

The utility model content

In view of this, the utility model is for the disappearance of prior art existence, its main purpose provides a kind of bilayer film keyboard, by the insulation projection is set on lower diaphragm, replaced the separator in the conventional films keyboard, improve the membrane keyboard job stability, simplify production technology, reduce production costs.

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

A kind of bilayer film keyboard, include upper diaphragm and lower diaphragm, be laid with respectively the conducting wire on this upper diaphragm and the lower diaphragm, correspondence is provided with push contact respectively on the conducting wire of upper diaphragm and lower diaphragm, is provided with around in lower diaphragm conducting wire be used to the insulation projection that prevents with the conducting wire short circuit of upper diaphragm.

As a kind of preferred version: described insulation projection is higher than push contact on the lower diaphragm.

As a kind of preferred version: described insulation projection is salient point or bar shaped projection.

As a kind of preferred version: the UV ink material that described insulation projection forms for printing.

The utility model compared with prior art has obvious advantage and beneficial effect, particularly, as shown from the above technical solution, by the insulation projection is set on lower diaphragm, replaced the separator in the conventional films keyboard, not only made up and down diaphragm at pressurized or not during pressurized, SI semi-insulation better effects if beyond the push contact, and simplified the production technology of membrane keyboard, reduced the production cost of membrane keyboard.

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

Description of drawings

Fig. 1 is that lower diaphragm separates schematic diagram on the utility model;

Fig. 2 is diaphragm schematic diagram on the utility model;

Fig. 3 is diaphragm schematic diagram under the utility model;

Fig. 4 is the membrane keyboard partial schematic sectional view of the utility model.

The accompanying drawing identifier declaration:

10, upper diaphragm 20, lower diaphragm

21, insulation projection 30, conducting wire

40, push contact.

Embodiment

The utility model as shown in Figures 1 to 4, a kind of bilayer film keyboard includes upper diaphragm 10 and lower diaphragm 20, wherein:

Be respectively arranged with conducting wire 30 on this upper diaphragm 10 and the lower diaphragm 20, on conducting wire 30, be respectively arranged with the push contact 40 that corresponds to each other, and around lower diaphragm 20 conducting wires 30, be provided be used to the insulation projection 21 that prevents with conducting wire 30 short circuits of upper diaphragm 10, this insulation projection 21 is higher than push contact 40 on the lower diaphragm 20, it is the UV ink material of salient point or bar shaped projection shape, and it adopts the mode of printing to be printed on the lower diaphragm 20.

Operation principle of the present utility model is as follows: when pressing upper diaphragm 10, upper diaphragm 10 and lower diaphragm 20 are drawn close each other, and the push contact 40 on two diaphragms electrically conducts up and down, and conducting wire 30 is separated by above-mentioned insulation projection 21 beyond the push contact 40, thereby, avoid short circuit.

Design focal point of the present utility model is, by the insulation projection is set on lower diaphragm, replaced the separator in the conventional films keyboard, not only make up and down diaphragm at pressurized or not during pressurized, SI semi-insulation better effects if beyond the push contact, and simplified the production technology of membrane keyboard, reduced the production cost of membrane keyboard.

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

Claims

1. bilayer film keyboard, include upper diaphragm and lower diaphragm, be laid with respectively the conducting wire on this upper diaphragm and the lower diaphragm, correspondence is provided with push contact respectively on the conducting wire of upper diaphragm and lower diaphragm, it is characterized in that: be provided with around in lower diaphragm conducting wire be used to the insulation projection that prevents with the conducting wire short circuit of upper diaphragm.

2. described bilayer film keyboard according to claim 1, it is characterized in that: described insulation projection is higher than push contact on the lower diaphragm.

3. described bilayer film keyboard according to claim 2, it is characterized in that: described insulation projection is salient point or bar shaped projection.

4. described bilayer film keyboard according to claim 1 is characterized in that: the UV ink material that described insulation projection forms for printing.