CN201117491Y - Keyboard incorporating light emitting device - Google Patents

Abstract

The utility model relates to a keyboard combined with a light-emitting device, which includes: a light guide plate, which is integrally combined with a metal plate, the metal plate is located on the bottom surface of the light guide plate, and at the same time, the light guide plate is divided into a plurality of sections; The light source is respectively arranged on the side of each section of the light guide plate; the button composition is arranged on the light guide plate, and the button composition includes a circuit board, a plastic film with an elastic body and arranged on the circuit board , and a button part arranged on the plastic film and the elastic body, the button part can move up and down relative to the light guide plate; the beneficial effect of the utility model is that the overall thickness of the keyboard is smaller than that of the commonly used one, so it can be applied It is used to make thinner and lighter keyboards; and a light guide plate with better strength can provide higher strength required by thinner and lighter keyboards.

Description

Keyboard incorporating light emitting device

technical field

The utility model relates to a keyboard, in particular to a keyboard combined with a light emitting device.

Background technique

The keyboards of early notebook or desktop computers were unable to emit light, but with the advancement of backlight module technology, some manufacturers have installed light-emitting devices on the keyboards, so that the keyboard itself not only has lighting effects, but also has a decorative effect.

The "illuminated keyboard" provided by Taiwan's Announcement No. 509955 patent case is characterized in that it includes a keyboard part and a backlight device. There is at least one key, and the backlight device is arranged under the keyboard part, so that the backlight device can provide the keyboard part light source from the bottom of the keyboard part. The purpose of the announcement No. 509955 patent case is to not only provide the luminous effect of the keyboard, but also take into account the requirement of reducing the thickness of the luminous keyboard.

The "keyboard structure" provided in Taiwan's Announcement No. I220213 patent case includes a base plate, a light guide, a thin-film circuit board, a key assembly, and a light-emitting component; the light guide system is arranged on the base plate; The thin film circuit board is arranged on the light guide body; the button assembly is arranged on the thin film circuit board, and has a key cap and an elastic body, and the elastic body is located between the key cap and the thin film circuit board ; The light-emitting component is adjacent to the light guide and arranged under the thin film circuit board; the light emitted by the light-emitting component is transmitted through the light guide and output to the elastic body and the keycap, so that the keycap produces light Effect. The purpose of the announcement No. I220213 patent is to simplify the problem that the structure of the commonly used luminous keyboard is too complicated.

The structure of the above-mentioned patent No. 509955 announcement can certainly provide a smaller total thickness than other luminous keyboards, but it cannot be achieved if the thickness is further reduced on the basis of this structure. And the keyboard thickness of announcement No. I220213 patent case is then obviously larger. In addition, the above-mentioned two previous patents both have the problem that the light guide plate (or light guide body) does not have a reinforcing structure, so that it is easy to bend and affect the optical effect; in addition, the two previous patents still have a further simplified structure Space.

Contents of the invention

The technical problem to be solved by the utility model is to provide a keyboard combined with a light-emitting device, aiming at solving the above-mentioned defects.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

The utility model comprises: a light guide plate, which is integrally combined with a metal plate, and the metal plate is located on the bottom surface of the light guide plate, and at the same time, the light guide plate is divided into a plurality of sections; a plurality of light sources are respectively arranged on each of the light guide plate The side of the section; the button is formed on the light guide plate; the button consists of a circuit board, a plastic film with an elastic body on the circuit board, and a plastic film and elastic body The button part on the top, the button part can move up and down relative to the light guide plate.

Compared with the prior art, the utility model has the beneficial effects that: the overall thickness of the keyboard is smaller than that commonly used, so it can be applied to manufacture lighter and thinner keyboards; and the light guide plate with better strength can provide the light and thin keyboard. higher strength is required.

Description of drawings

Fig. 1 is a three-dimensional exploded view showing the combination relationship of the main components of the utility model.

Fig. 2 is a plane exploded view showing the structure of the main components of the utility model.

Fig. 3 is a plane sectional view showing the assembled structure of the main components of the present invention.

FIG. 4 is a top plan view showing the structure of the light guide plate and the installation position of the light source of the present invention.

5A to 5C are schematic diagrams showing the manufacturing process of the combination of the light guide plate and the metal plate of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

One of the purposes of the present invention is to make the light guide plate of the backlight module in the light-emitting keyboard have higher strength without bending, so as to avoid the problem of affecting the optical performance.

Another purpose of the present invention is to further simplify the structure of the luminous keyboard, so that the overall thickness of the keyboard can be further reduced.

The utility model is characterized in that the light guide plate used as the light guide medium in the backlight module and the metal plate used as the supporting base are combined into one, so that the metal plate becomes a part of the light guide plate to improve the mechanical strength of the light guide plate; Alternatively, the metal plate and key components are directly combined with the light guide plate, thereby simplifying the structure and reducing the overall thickness of the keyboard.

Another feature of the present invention is that after the metal plate is combined with the light guide plate, the light guide plate is divided into a plurality of sections at the same time. Since the length of the light guide plate in each section is relatively small, it can be combined with the aforementioned integrated metal plate, so that the light guide plate hardly bends, so as not to affect the optical performance of the light guide plate.

Based on this, the technical means of the backlight module used in the keyboard provided by the present invention includes a light guide plate, a plurality of light sources and a button. A metal plate, the metal plate is positioned on the bottom surface of the light guide plate, and at the same time, the light guide plate is divided into multiple sections by using the protrusions, so that the light guide plate has better strength; before the metal plate is not combined with the light guide plate, The positioning components with protruding lugs are pre-installed. After the light guide plate is combined with the metal plate by injection molding technology, these lugs and the positioning components pass through the light guide plate to connect with the connecting rod structure composed of buttons; The light source is respectively arranged on the side of each section of the light guide plate. After the light source projects the light into the light guide plate, the light can be transmitted through the light guide plate, so that the button produces a luminous effect.

It can be seen from Fig. 1 and Fig. 2 that the preferred embodiment of the keyboard combined with the light-emitting device provided by the utility model includes a backlight module and a button to form 4; wherein, the backlight module further has a light guide plate 1, and the light guide plate The bottom surface of 1 is integrally combined with a metal plate 2, and the metal plate 2 separates the light guide plate 1 into a plurality of sections; each section of the light guide plate 1 is provided with at least one light source 3 (as shown in Figure 4) , the light source 3 can project light from the side of the light guide plate 1, so that the light guide plate can transmit the light.

Referring to Fig. 5A to Fig. 5C again, the preferred combination structure of the light guide plate 1 and the metal plate 2 of the present utility model is first to take a flat metal plate 2 as shown in Fig. 5A, and then apply a punching machine to the metal plate Pre-processing to form a plurality of raised portions 21, to form a higher second upper surface 210 in the raised portion 21, while the relatively lower one is the first upper surface 20; the metal between adjacent raised portions 21 The plate 2 then punches out a plurality of protruding lugs 23 and positioning components 24, and can even punch out a plurality of holes 22 (shown in FIG. 5B); The number of required button parts and the location of the setting are determined; the distance from the second upper surface 210 of the raised part 21 to the first upper surface 20 of the metal plate is equal to the thickness of the light guide plate 1 to be manufactured. The metal plate 2 formed with the lugs 23 and the positioning components 24 is placed in the mold, and then the material for making the light guide plate is injected into the mold by injection molding technology to form the light guide plate 1. After the manufacture is completed, the longer lugs 23 The positioning component 24 will pass through the upper surface 11 of the light guide plate 1, and the material of the light guide plate will enter the hole 22, so that the light guide plate 1 and the metal plate 2 are firmly combined, and at the same time, the upper surface 11 of the light guide plate 1 and the protrusion The second upper surface 210 of the portion 21 is flush (as shown in FIG. 5C ).

Referring to Fig. 1 and Fig. 2 again, described button composition 4 comprises a button part 41, a connecting rod structure 43, a circuit board 44, and a plastic film 45 that is provided with elastomer 42 above, and this connecting rod structure 43 is two For the cross pivotally connected connecting rods, the upper end and lower end of one pair of connecting rods are respectively pivotally connected to the lower part of the button part 41 and the lug 23, and the upper and lower ends of the other pair of connecting rods are respectively connected to the lower part of the button part 41 and the positioning assembly 24, to complete the assembly of the key component 4 and the top of the light guide plate 1 (as shown in FIG. 3 ).

According to the above-mentioned structure of the present invention, the light source 3 projects light from the side of the light guide plate 1 into the light guide plate 1 to conduct the light, so that the button produces a luminous effect. The utility model is characterized in that the metal plate and the light guide plate are integrated, thereby improving the mechanical strength of the light guide plate; in addition, the metal plate and keys are directly combined with the light guide plate, thereby simplifying the structure and reducing the overall size of the keyboard. total thickness. Furthermore, the utility model divides the light guide plate 1 into multiple segments with smaller lengths through the plurality of protrusions 21 provided on the metal plate, and cooperates with the metal plate 2 that is integrated, so that the light guide plate 1 is hardly Deflection occurs, resulting in improved optical performance that is more practical and progressive than commonly used counterparts.

The above description is only used to explain the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any form. Therefore, any modification or change made under the same spirit is acceptable. Still should be included in the intended protection scope of the utility model.

Claims (3)

1. A keyboard combined with a light-emitting device, characterized in that it includes: a light guide plate, which is integrally combined with a metal plate, the metal plate is located on the bottom surface of the light guide plate, and simultaneously separates the light guide plate into a plurality of sections; A plurality of light sources are respectively arranged on the side of each section of the light guide plate; the button composition is arranged on the light guide plate, and the button composition includes a circuit board, a plastic material with an elastic body and is arranged on the circuit board film, and a button part arranged on the plastic film and the elastic body, the button part can move up and down relative to the light guide plate. 2. The keyboard combined with a light-emitting device according to claim 1, characterized in that: the metal plate is bent to form a plurality of raised parts, and the second upper surface of the raised part reaches the first upper surface of the metal plate The distance is equal to the thickness of the light guide plate, so that when the light guide plate is combined with the first upper surface of the metal plate, the upper surface of the light guide plate is flush with the second upper surface of the raised portion. 3. The keyboard combined with a light-emitting device according to claim 1 or 2, characterized in that: the metal plate is provided with a plurality of lugs and positioning components passing through the upper surface of the light guide plate, and the lower part of the key A connecting rod structure is pivotally arranged, and the connecting rod structure is connected to the lug and the positioning component.

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