CN203277170U

CN203277170U - Membrane switch keyboard lightening by utilization of fiber

Info

Publication number: CN203277170U
Application number: CN 201320197001
Authority: CN
Inventors: 刘凤森
Original assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Current assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Priority date: 2013-04-18
Filing date: 2013-04-18
Publication date: 2013-11-06
Anticipated expiration: 2023-04-18

Abstract

The utility model discloses a membrane switch keyboard lightening by the utilization of fiber. The membrane switch keyboard comprises an upper membrane and a lower membrane which are respectively provided with a conducting circuit. The conducting circuits on the upper and lower membrane are respectively correspondingly provided with compression contacts. The bottom surface of the lower membrane is provided with fiber which passes by right below each compression contact. In allusion to the fiber, a light source which is connected with a light inlet of the fiber so as to make the whole body of the fiber lighten is arranged. The light source is utilized to make the whole body of the fiber lighten, and the fiber passes by right below each compression contact to make lights of the fiber emitted out from the periphery of the compression contacts so as to realize lightening of the keyboard. Thus, a traditional mode by which a light guide plate is adopted is replaced. The keyboard structure is ultra thin, has smaller volume, and requires lower cost. Meanwhile, as optical loss of the fiber is little, only one light source is required, and the light source can be arranged at any position according to actual needs so as to effectively reduce production difficulty of the product.

Description

Utilize the thin film switch keyboard of optical fiber luminescent

Technical field

The utility model relates to the art of keypads technology, refers in particular to a kind of thin film switch keyboard that utilizes optical fiber luminescent.

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 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 present 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 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 market.

Membrane keyboard is because volume is frivolous, therefore is widely used in recent years various electronic products, and especially the sound that produces when pressing of membrane keyboard is minimum, is applicable to button or the keyboard of various devices.As shown in Figure 1, traditional membrane keyboard usually have upper diaphragm 10 ' and lower diaphragm 20 ', this upper diaphragm 10 ' and lower diaphragm 20 ' on be laid with respectively conducting wire 30 ', in upper diaphragm 10 ' and lower diaphragm 20 ' conducting wire 30 ' on respectively correspondence be provided with push contact 31 ', this upper diaphragm 10 ' upper surface be provided with delustring printed layers 40 ', this time diaphragm 20 ' conducting wire 30 ' be provided with on every side be used to prevent with upper diaphragm 10 ' conducting wire 30 ' be short-circuited insulation interlayer 50 '; In order to make the keyboard can be luminous, usually in lower diaphragm 20 ' the bottom surface on be provided with light guide plate 60 ', and in light guide plate 60 ' the periphery annex be provided with a plurality of light source (not shown), the light that utilizes these a plurality of light sources to send enter light guide plate 60 ', then the light transmission upper diaphragm 10 of light guide plate 60 ' send ' and lower diaphragm 20 ' and from delustring printed layers 40 ' loophole 41 ' appear, thereby realize that keyboard is luminous.

Although it is luminous that the structure of above-mentioned keyboard can realize, yet, above-mentioned employing be the mode of light guide plate, because light guide plate is to reflect luminously by salient point, Thickness Ratio is thicker, makes the overall structure of keyboard thicker, volume is large, cost is also high, and simultaneously, the light guide plate light loss is larger owing to adopting, need to adopt a plurality of light sources with this, and will these a plurality of light source arrangement on the position of characteristics, thereby further increased cost, also strengthened the manufacture difficulty of product.

The utility model content

In view of this, the utility model is for the disappearance of prior art existence, its main purpose is to provide a kind of thin film switch keyboard that utilizes optical fiber luminescent, and it can effectively solve existing keyboard and adopt that the light guide plate mode is luminous makes the problem that product thickness is thick, volume is large, cost of manufacture is high, difficulty is large.

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

A kind of thin film switch keyboard that utilizes optical fiber luminescent, include upper diaphragm and lower diaphragm, be laid with respectively the conducting wire on this upper diaphragm and lower diaphragm, correspondence is provided with push contact respectively on the conducting wire of upper diaphragm and lower diaphragm, the bottom surface of this time diaphragm is provided with optical fiber, this optical fiber is through under each push contact, is provided with the optical fiber light inlet for this optical fiber to be connected so that the light source of optical fiber entirely lighting.

As a kind of preferred version, be provided with around the conducting wire of described lower diaphragm be used to the insulation interlayer that prevents with the conducting wire short circuit of upper diaphragm.

As a kind of preferred version, described insulation interlayer is the PET material.

As a kind of preferred version, the upper surface of described upper diaphragm is provided with the delustring printed layers, is provided with a plurality of loopholes on this delustring printed layers, and this each loophole is respectively over against the push contact of aforementioned correspondence.

As a kind of preferred version, described upper diaphragm is the PET material.

As a kind of preferred version, described lower diaphragm is the PET material.

As a kind of preferred version, described light source is the LED lamp.

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

By utilizing light source to make the optical fiber entirely lighting, and coordinate optical fiber through under each push contact so that the light of optical fiber projects and realizes that keyboard is luminous from the periphery of push contact, the mode that adopts light guide plate that has replaced tradition, made keyboard structure spy of the present utility model thin with this, volume is less, and cost is lower; Simultaneously, because the light loss of optical fiber is less, therefore only need uses a light source to get final product, and can according to actual needs this light source be arranged on any position, effectively reduce the manufacture difficulty of product.

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.

Description of drawings

Fig. 1 is the partial section of the illuminated keyboard of tradition;

Fig. 2 is the assembling schematic diagram of the preferred embodiment of the utility model;

Fig. 3 is the exploded view of the preferred embodiment of the utility model;

Fig. 4 is the partial section of the preferred embodiment of the utility model.

The accompanying drawing identifier declaration:

10 ', upper diaphragm 20 ', lower diaphragm

30 ', conducting wire 31 ', push contact

40 ', delustring printed layers 41 ', loophole

50 ', the insulation interlayer 60 ', light guide plate

10, upper diaphragm 20, lower diaphragm

30, conducting wire 31, push contact

40, delustring printed layers 41, loophole

50, insulation interlayer 60, optical fiber

70, light source.

Embodiment

Please refer to Fig. 2 to shown in Figure 4, the concrete structure that it has demonstrated the preferred embodiment of the utility model includes upper diaphragm 10 and lower diaphragm 20.

Be laid with respectively conducting wire 30 on this upper diaphragm 10 and lower diaphragm 20, correspondence is provided with push contact 31 respectively on the conducting wire 30 of upper diaphragm 10 and lower diaphragm 20; Concrete and say, in the present embodiment, this upper diaphragm 10 is the PET material, and the upper surface of this upper diaphragm 10 is provided with delustring printed layers 40, is provided with a plurality of loopholes 41 on this delustring printed layers 40, and this each loophole 41 is respectively over against the push contact 31 of aforementioned correspondence; This time diaphragm 20 is also the PET material, and, being provided with the insulation interlayer 50 that is short-circuited be used to the conducting wire 30 that prevents with upper diaphragm 10 around the conducting wire of this time diaphragm 20 30, this insulation interlayer 50 is the PET material.

In addition, the bottom surface of this time diaphragm 20 is provided with optical fiber 60, this optical fiber 60 is through under each push contact 31, be provided with for this optical fiber 60 and be connected with optical fiber 60 light inlets so that the light source 70 of optical fiber 60 entirely lightings, in the present embodiment, this light source 70 is the LED lamp, uses the brightness of LED lamp higher, and energy-conserving and environment-protective are not to be limited.

The operation principle that the present embodiment is described in detail in detail is as follows:

During use, light that light source 70 sends through optical fiber 60 conduct to each push contact 31 under, then light passes lower diaphragm 20 and upper diaphragm 10 and appears through loophole 41, realizes that keyboard is luminous; When pressing upper diaphragm 10, upper diaphragm 10 and lower diaphragm 20 are drawn close each other, and the push contact 31 on two diaphragms of up and down electrically conducts, and beyond push contact 31, conducting wire 30 is separated by above-mentioned insulation interlayer 50, thereby avoids short circuit.

Design focal point of the present utility model is: make the optical fiber entirely lighting by utilizing light source, and coordinate optical fiber through under each push contact so that the light of optical fiber projects and realizes that keyboard is luminous from the periphery of push contact, the mode that adopts light guide plate that has replaced tradition, made keyboard structure spy of the present utility model thin with this, volume is less, and cost is lower; Simultaneously, because the light loss of optical fiber is less, therefore only need uses a light source to get final product, and can according to actual needs this light source be arranged on any position, effectively reduce the manufacture difficulty of product.

The above, it is only preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, therefore every foundation 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 does.

Claims

1. thin film switch keyboard that utilizes optical fiber luminescent, include upper diaphragm and lower diaphragm, be laid with respectively the conducting wire on this upper diaphragm and lower diaphragm, correspondence is provided with push contact respectively on the conducting wire of upper diaphragm and lower diaphragm, it is characterized in that: the bottom surface of this time diaphragm is provided with optical fiber, this optical fiber is through under each push contact, is provided with the optical fiber light inlet for this optical fiber to be connected so that the light source of optical fiber entirely lighting.

2. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 1 is characterized in that: be provided with around the conducting wire of described lower diaphragm be used to the insulation interlayer that prevents with the conducting wire short circuit of upper diaphragm.

3. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 2, it is characterized in that: described insulation interlayer is the PET material.

4. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 1, it is characterized in that: the upper surface of described upper diaphragm is provided with the delustring printed layers, be provided with a plurality of loopholes on this delustring printed layers, this each loophole is respectively over against the push contact of aforementioned correspondence.

5. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 1, it is characterized in that: described upper diaphragm is the PET material.

6. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 1, it is characterized in that: described lower diaphragm is the PET material.

7. the thin film switch keyboard that utilizes optical fiber luminescent according to claim 1, it is characterized in that: described light source is the LED lamp.