CN216980419U

CN216980419U - Electromagnetic shielding waterproof backlight keyboard structure

Info

Publication number: CN216980419U
Application number: CN202220651657.4U
Authority: CN
Inventors: 郭子民; 赵晓伟; 韩文杰; 程鹏; 张盼盼; 蔚继平
Original assignee: Shield Electronics Technologies Co ltd
Current assignee: Shield Electronics Technologies Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-07-15
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses an electromagnetic shielding waterproof backlight keyboard structure which comprises an equipment panel and a fixed support, wherein the equipment panel and the fixed support are made of metal materials and are connected by adopting a conductive material; a transparent or semitransparent keyboard is arranged on the equipment panel, a silica gel flanging structure is arranged around the keyboard, and the fixing support and the equipment panel tightly press the silica gel flanging structure around the keyboard; the lower part of the keyboard and the upper part of the fixed support are provided with light homogenizing plates, the lower part of the fixed support is provided with a programmable circuit board, the programmable circuit board is provided with a light touch switch which is correspondingly contacted with a keyboard key, the side part of the light touch switch is provided with a lamp bead, and the lamp bead is scattered to the back part of the keyboard through the light homogenizing plates. And each hole of the fixed support meets the electromagnetic compatibility requirement. The fixed support and the equipment panel are connected by adopting a conductive material, so that the electromagnetic compatibility and the reinforcement performance are realized.

Description

Electromagnetic shielding waterproof backlight keyboard structure

Technical Field

The utility model relates to the technical field of keyboards, in particular to an electromagnetic shielding waterproof backlight keyboard structure.

Background

With the rapid development of the information industry, electronic products are widely applied in the market, so that human-computer interaction is advanced from a keyboard to dragging touch control of a touch pad, a touch screen and the like, however, certain characteristics still need a large amount of keyboard operation, and the keyboard still has the existing necessity in specific environments including instrument and meter industrial equipment, field exploration and measurement equipment and the like.

With the popularization of electronic products, electromagnetic shielding technology plays an increasingly important role, is an important component of electromagnetic compatibility technology, and is the most effective means for preventing radiation interference. Electromagnetic compatibility means: if the electronic device and system are operating properly within the designed parameters, there is no hesitation to cause or suffer unacceptable performance degradation from electromagnetic radiation or response.

When the reinforced equipment, the shielding box body and the special control box are used, the key cap of the keyboard is too large, so that the hole of the metal structural part is larger indirectly, and the main path of electromagnetic leakage is realized. Electromagnetic leakage is solved while man-machine interaction is carried out. Therefore, the reliability, stability, practicability and aesthetic property of the shielding device are important on the premise of ensuring the shielding effectiveness of the device. The existing keyboard structure cannot simultaneously give consideration to the performances of water resistance, backlight, electromagnetic compatibility and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electromagnetic shielding waterproof backlight keyboard structure which is simple in structure and convenient to operate.

In order to achieve the purpose, the utility model provides the following technical scheme: an electromagnetic shielding waterproof backlight keyboard structure comprises an equipment panel and a fixing support, wherein the equipment panel and the fixing support are made of metal materials and are connected by adopting a conductive material; a transparent or semitransparent keyboard is arranged on the equipment panel, a silica gel flanging structure is arranged around the keyboard, and the fixing support and the equipment panel tightly press the silica gel flanging structure around the keyboard; the lower part of the keyboard and the upper part of the fixed support are provided with light homogenizing plates, the lower part of the fixed support is provided with a programmable circuit board, the programmable circuit board is provided with a tact switch which is correspondingly contacted with a key of the keyboard, the side part of the tact switch is provided with a lamp bead, and the lamp bead is scattered to the back of the keyboard through the light homogenizing plates.

And each hole of the fixed support meets the electromagnetic compatibility requirement. The fixed support and the equipment panel are connected by adopting a conductive material, so that the electromagnetic compatibility and the reinforcement performance are realized.

Furthermore, the keyboard is made of transparent or semitransparent mould-proof silica gel materials. The selected material can be used for a long time at-60 ℃ to 200 ℃.

Further, the surface of the keyboard is printed with text and is sprayed with ink for treatment. The light-transmitting glass has the performances of high and low temperature resistance, mildew resistance, corrosion resistance and light transmittance. The waterproof performance is realized through the compression and fastening of the fixed support.

Furthermore, the light homogenizing plate is made of a double-sided frosted PC light diffusion plate. On the basis of realizing backlight, a light homogenizing plate is added between the keyboard and the programmable circuit board, LED lamp beads can be adopted as the lamp beads, and the LED lamp beads are scattered to the back of the keyboard through the light homogenizing plate, so that the backlight of the whole keyboard is realized through the method.

Furthermore, the conductive material is a conductive rubber ring, and the connection part of the edge of the equipment panel and the fixed support is connected through the conductive rubber ring.

Furthermore, the lower part of the programmable circuit board is provided with a key control module, a driving module and a communication interface. The expandability of the functions is increased.

Furthermore, a groove for placing the light homogenizing plate is formed in the fixing support, an installation surface for installing the conductive material is arranged at the upper outer edge of the fixing support, the installation surface is located on the outer side of the groove, and the fixing support with the light homogenizing plate and the conductive material installed is fastened with the equipment panel through bolts.

Furthermore, the programmable circuit board is fixedly installed on a fixing column of the fixing support through a bolt.

Furthermore, the waterproof flanging of the keyboard is connected with the keyboard buttons through the keyboard inclined arms.

Furthermore, the back of the keyboard is provided with an exhaust groove which is communicated with the inner side of the lower part of the keyboard and the outer part of the keyboard.

The utility model has the following technical effects:

1. the lamp beads and the light homogenizing plate are arranged in the keyboard, when the light of the keyboard is insufficient, each character on the keyboard is illuminated from bottom to top by soft light, so that a user is not disturbed by darkness any more, the use is more convenient, and the operation capacity is improved; and simple structure, small in size, convenient operation and carry.

2. The keyboard buttons are provided with silica gel waterproof flanges all around, the fixed support and the equipment panel are installed through bolts, the silica gel around the keyboard is conveniently compressed to achieve waterproofing, and the problem of water inflow of the keyboard is not worried. The waterproof performance of the keyboard part structure in the electronic equipment is ensured.

4. The periphery of the fixed support and the equipment panel are metal pieces, the metal pieces are connected through the conductive rubber ring, and the exposed gap is reduced by compressing the conductive rubber ring, so that the electromagnetic compatibility requirement is met. And the fixed support is provided with a round small hole right above the tact switch and the LED lamp bead, so that the light transmission and electromagnetic shielding performance are ensured.

5. The keyboard is made of transparent or semitransparent mould-proof silica gel materials, so that the mould-proof performance of the keys is guaranteed while the light transmittance is guaranteed.

Drawings

FIG. 1 is a sectional view of an electromagnetic shielding waterproof backlight keyboard structure according to an embodiment;

FIG. 2 is an exploded view of an exemplary embodiment of an electromagnetic shielding waterproof backlight keyboard;

FIG. 3 is a schematic diagram of the structure of the panel of the device in the embodiment (a partial region of the structure is selected as the description of the present embodiment);

FIG. 4 is a schematic diagram of an embodiment of a keyboard;

FIG. 5 is a schematic structural view of a fixing bracket according to an embodiment;

FIG. 6 is a schematic diagram of an embodiment of a programmable circuit board structure;

FIG. 7 is a schematic diagram of an extended product 1 of an electromagnetic shielding waterproof backlight keyboard structure in an embodiment;

fig. 8 is a schematic diagram of a product 2 with an extended electromagnetic shielding waterproof backlight keyboard structure in an embodiment.

Reference numerals: 1. an equipment panel; 1-1, installing holes of a keyboard; 1-2, bracket fixing holes; 1-3, mounting grooves; 2. a keyboard; 2-1, waterproof flanging of the keyboard; 2-2, keyboard buttons; 2-3, key oblique arm; 2-4, keyboard auxiliary key tail; 2-5, an exhaust groove; 3. fixing a bracket; 3-1, passing through a bolt hole; 3-2, installing a rubber ring; 3-3, a groove; 3-4, fixing columns; 3-5, fixing holes of the circuit board; 3-6, key holes; 3-7, through holes; 4. a light homogenizing plate; 5. a programmable circuit board; 5-1, passing through a bolt hole; 5-2, a tact switch; 5-3, LED lamp beads; 5-4, an external interface socket; 5-5, electronic components; 6. customizing a conductive rubber ring; 7. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-8, an electromagnetic shielding waterproof backlight keyboard structure comprises an equipment panel 1, the equipment panel 1 is an aluminum milling structure, and the back of the equipment panel 1 is provided with panel fixing holes 1-2 for connecting objects, keyboard mounting holes 1-1 and mounting grooves 1-3. The keyboard 2, the fixed support 3, the dodging plate 4 and the programmable circuit board 5 are arranged below the equipment panel 1. The structural part takes an aluminum milling metal equipment panel 1 and a fixed support 3 as main bodies to form keyboard area shielding.

The keyboard 2 is provided with a waterproof flanging 2-1, keyboard buttons 2-2, key inclined arms 2-3, a keyboard auxiliary key tail 2-4 and an exhaust duct 2-5. The waterproof flanging 2-1 is similar to a waterproof sealing ring structure, and waterproof sealing is realized by compressing the waterproof flanging 2-1. The keyboard button 2-2 is used for man-machine interaction, and the key inclined arm 2-3 is connected with the keyboard button 2-2 and the keyboard 2 body; the keyboard auxiliary key tail 2-4 assists the key button 2-2 to contact with the tact switch 5-2, and the air exhaust groove 2-5 is used for exhausting air below the key inclined arm 2-3 when the keyboard button 2-2 is pressed and allowing external air to flow into the lower part of the key inclined arm 2-3 from the air exhaust groove when the keyboard button 2-2 is released.

A keyboard 2 is arranged at a keyboard mounting hole 1-1 on the equipment panel 1, a keyboard button 2-2 on the keyboard 2 is exposed out of the equipment through the keyboard mounting hole 1-1, and a waterproof keyboard flanging 2-1 is arranged in a mounting groove 1-3 of the equipment panel 1.

The fixing support 3 is provided with bolt through holes 3-1, a rubber ring mounting surface 3-2, grooves 3-3, fixing columns 3-4 and 3-5, circuit board fixing holes 3-5, key holes 3-6 and through holes 3-7. The light homogenizing plate 4 is arranged in the groove 3-3 of the fixing support 3 and is flattened, and the customized conductive rubber ring 6 is adhered to the rubber ring mounting surface 3-2 of the fixing support 3 through back glue.

The fixed support 3 provided with the uniform light plate 4 and the customized conductive rubber ring 6 is fastened with the support fixing hole 1-2 on the equipment panel 1 through a bolt 7; the touch switch 5-2 on the programmable circuit board 5 penetrates through the key hole 3-6, and the programmable circuit board 5 is installed on the fixed column 3-4 through a bolt 7.

The fixing support 3 is fastened with the equipment panel 1 through a bolt 7, and the keyboard waterproof flanging 2-2 and the customized conductive rubber ring 6 are compressed through the fixing support 3; the programmable circuit board 5 is an electrical structure and can define the keyboard value and perform the matrix keyboard function; the programmable circuit board 5 and the fixed support 3 are supported by fixed columns 3-4, the head of the tact switch 5-2 is inserted into through holes 3-6 on the fixed support 3, mounting holes corresponding to the fixed support 3 and the programmable circuit board 5 are fixed by bolts 7, LED lamp beads 5-3 on the programmable circuit board 5 emit light to irradiate the light homogenizing plate 4 through the through holes 3-7, and the back of the programmable circuit board is provided with an external interface socket 5-4 and an electronic component 5-5.

As shown in FIG. 1, this embodiment can be used as a structural graft. As shown in fig. 7 and 8, the present embodiment can be configured to be used in some devices.

When the keyboard 2 is used, the key touch power can be buffered by transiting the silica gel keyboard keys to the touch switch 5-2, the whole service life of the keyboard 2 is protected, the reliability of the keyboard 2 is improved, and the keyboard 2 is truly protected. The keyboard 2 has the reinforcing effect, the electromagnetic compatibility, the waterproof effect and the backlight effect also reach the best state, the structure is reliable and simple, convenient and durable, the keyboard has the effects of high and low temperature resistance, electromagnetic interference resistance, impact vibration resistance, water resistance, mildew resistance, pollution prevention, corrosion resistance, backlight and the like, and the keyboard is very convenient to manufacture, install and maintain.

The embodiment can be widely applied in the fields of instruments, computer electronic control systems, various instruments, mechanical equipment, industrial and mining aerospace and the like, and has good popularization and application prospects.

This structure uses aluminium to mill metal decking and fixed bolster 3 as the main part, forms the regional shielding of keyboard. The keyboard 2 overcomes the defects that the keyboard 2 of the existing product can not simultaneously take into account the performances of high and low temperature resistance, water resistance, mildew resistance, corrosion resistance, backlight, electromagnetic compatibility and the like, has poor electromagnetic compatibility and radiation resistance, overcomes a plurality of defects of the existing product, is particularly suitable for instruments and equipment with complex working conditions and environments, and overcomes the defect that the severe environment interferes with the product performance.

Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.

Claims

1. The electromagnetic shielding waterproof backlight keyboard structure is characterized by comprising an equipment panel (1) and a fixing support (3), wherein the equipment panel (1) and the fixing support (3) are made of metal materials, and the equipment panel (1) and the fixing support (3) are connected by adopting a conductive material; a transparent or semitransparent keyboard (2) is arranged on the equipment panel (1), a silica gel flanging structure is arranged around the keyboard (2), and the silica gel flanging structure around the keyboard (2) is tightly pressed by the fixed support (3) and the equipment panel (1); the lower part of the keyboard (2) and the upper part of the fixed support (3) are provided with light homogenizing plates (4), the lower part of the fixed support (3) is provided with a programmable circuit board (5), the programmable circuit board (5) is provided with a light touch switch (5-2) which is correspondingly contacted with keys of the keyboard (2), the side part of the light touch switch (5-2) is provided with lamp beads, and the lamp beads are scattered to the back part of the keyboard (2) through the light homogenizing plates (4).

2. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the keyboard (2) is made of transparent or translucent anti-mold silica gel.

3. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the keyboard (2) is printed with text and treated by spraying ink on the surface.

4. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the light homogenizing plate (4) is made of a double-sided frosted PC light diffusion plate.

5. The electromagnetic shielding waterproof backlight keyboard structure of claim 1, wherein the conductive material is a conductive rubber ring, and the connection part of the edge of the device panel (1) and the fixed bracket (3) is connected through the conductive rubber ring.

6. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein a key control module, a driving module and a communication interface are arranged at the lower part of the programmable circuit board (5).

7. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein a groove (3-3) for placing the light homogenizing plate (4) is formed in the fixing support (3), an installation surface for installing a conductive material is arranged on the upper outer edge of the fixing support (3), the installation surface is positioned on the outer side of the groove (3-3), and the fixing support (3) with the light homogenizing plate (4) and the conductive material installed thereon is fastened with the equipment panel (1) through a bolt (7).

8. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the programmable circuit board (5) is fixedly mounted on the fixing posts (3-4) of the fixing bracket (3) by bolts (7).

9. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the waterproof flange of the keyboard (2) is connected with the button of the keyboard (2) through the inclined arm of the keyboard (2).

10. The electromagnetic shielding waterproof backlight keyboard structure according to claim 1, wherein the back of the keyboard (2) is provided with air exhaust grooves (2-5) communicating the inner side of the lower part of the keyboard (2) with the outer part of the keyboard (2).