CN220873460U - Electromagnetic shielding key device - Google Patents
Electromagnetic shielding key device Download PDFInfo
- Publication number
- CN220873460U CN220873460U CN202322645668.9U CN202322645668U CN220873460U CN 220873460 U CN220873460 U CN 220873460U CN 202322645668 U CN202322645668 U CN 202322645668U CN 220873460 U CN220873460 U CN 220873460U
- Authority
- CN
- China
- Prior art keywords
- key
- shell
- circuit board
- hole
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002390 adhesive tape Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 12
- 239000000741 silica gel Substances 0.000 claims abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 238000007747 plating Methods 0.000 claims 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides an electromagnetic shielding key device which comprises a shell, a silica gel key, a shielding shell, a key circuit board, a feed-through filter and a conductive adhesive tape, wherein the silica gel key is arranged on the shell; the device adopts the feed-through filter to carry out electromagnetic shielding, and meanwhile, the conductive adhesive tape is additionally arranged to further seal and shield, and the size of the feed-through filter is small, so that the key device has the advantages of small volume and convenience in carrying; in addition, the feed-through filter and the key circuit board are welded and connected in the welding hole, and meanwhile, screws penetrate through the mounting hole of the shielding shell and the mounting through hole of the key circuit board to be in threaded connection with the mounting threaded hole of the shell, so that the sealing and shielding effects of the conductive adhesive tape between the shell and the shielding shell of the key circuit board are guaranteed, the stability of the electromagnetic shielding effects between the feed-through filter and the key circuit board is guaranteed, and the shielding effects of the device are effectively improved.
Description
Technical Field
The utility model relates to the technical field of electromagnetic shielding equipment, in particular to an electromagnetic shielding key device.
Background
With the continuous development and progress of the technology level, electronic products have been widely used in various military equipment and civil products. However, with the rapid development of high-energy electronics technology, pulse power technology, wireless transmission technology, etc. in recent years, the generation of strong magnetic field pulses can cause serious interference to electronic devices and systems, and particularly for military equipment and important civil devices, the use of strong magnetic field pulses to interfere with enemy electronic devices or to acquire enemy information by using electromagnetic signals of electronic devices is becoming an increasingly popular engagement mode. In order to effectively protect the electronic device from being influenced, the electromagnetic shielding function of the electronic device needs to be studied, and the electromagnetic shielding of the key device in the electronic device is one of the most basic works.
Aiming at the electromagnetic shielding of the key device, the patent number CN202839412U, a high-performance electromagnetic shielding keyboard, is characterized in that a shielding box is sleeved on the outer wall of the keyboard, a keyboard panel is arranged on the upper part of a box cover of the shielding box, and the electromagnetic shielding of the key device in the keyboard is realized by utilizing a mode of connecting rods and wave guides under each key. But each button in the device all needs a corresponding wave guide pipe, and whole quantity is many, causes the volume of whole device very big, and the operation installation is very inconvenient, and shielding electromagnetic effect is poor. Therefore, aiming at the problems of the prior key device, the key device with small volume, convenient installation and good electromagnetic shielding effect is specially designed.
Disclosure of utility model
In order to solve the defects and shortcomings of the prior art, the electromagnetic shielding key device is provided, so that the problems of large volume, inconvenient operation and installation and poor electromagnetic shielding effect caused by the fact that the existing key device utilizes a waveguide to realize electromagnetic shielding can be solved.
The utility model provides an electromagnetic shielding key device for realizing the purpose, which comprises a shell, a shielding shell and a feed-through filter, wherein a plurality of key through holes are formed in the shell, a hollow groove is formed in the bottom of the shell, the shielding shell is inserted into the hollow groove of the shell and fixedly connected with the hollow groove, a key circuit board is arranged between the shell and the shielding shell, keys on the key circuit board penetrate through the key through holes in the shell and extend outwards, a plurality of filtering through holes are formed in the bottom of the shielding shell, a plurality of welding holes are formed in the key circuit board, and the ends of the feed-through filter penetrate through the filtering through holes and are welded and fixed with the key circuit board in the welding holes.
As a further improvement of the scheme, the contact area between the hollow groove of the shell and the shielding shell is provided with the conductive adhesive tape, so that the electromagnetic shielding effect of the device is further improved.
As a further improvement of the scheme, the bottom surface of the hollow tank of the shell is provided with the mounting threaded hole, the key circuit board is provided with the mounting through hole, the shielding shell is provided with the mounting hole, the mounting hole is internally provided with a screw, and the bottom end of the screw passes through the mounting through hole to be in threaded connection with the mounting threaded hole, so that the tight combination of the shell and the shielding shell is realized.
As a further improvement of the scheme, a silica gel key is arranged between the key circuit board and the shell, and a key soft sleeve on the silica gel key is sleeved on a key on the key circuit board.
As a further improvement of the above scheme, the key circuit board may be any type of key circuit board.
As a further improvement of the scheme, the material of the conductive adhesive tape is silver-plated high-elasticity material or nickel-plated high-elasticity material.
The beneficial effects of the utility model are as follows:
Compared with the prior art, the electromagnetic shielding key device provided by the utility model adopts the feed-through filter to carry out electromagnetic shielding, and meanwhile, the conductive adhesive tape is additionally arranged to further seal and shield, and the size of the feed-through filter is small, so that the key device has the advantages of small volume and convenience in carrying; in addition, the feed-through filter and the key circuit board are welded and connected in the welding hole, and meanwhile, screws penetrate through the mounting hole of the shielding shell and the mounting through hole of the key circuit board to be in threaded connection with the mounting threaded hole of the shell, so that the sealing and shielding effects of the conductive adhesive tape between the shell and the shielding shell of the key circuit board are guaranteed, the stability of the electromagnetic shielding effects between the feed-through filter and the key circuit board is guaranteed, and the shielding effects of the device are effectively improved.
Drawings
FIG. 1 is a schematic diagram of the present utility model;
FIG. 2 is a schematic diagram II of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is an exploded view of the present utility model;
FIG. 5 is a schematic view of a housing of the present utility model;
FIG. 6 is a schematic diagram of a silicone button according to the present utility model;
FIG. 7 is a schematic diagram of a key circuit board according to the present utility model;
fig. 8 is a schematic view of a shield shell of the present utility model;
FIG. 9 is a schematic view in section of A-A of FIG. 1;
fig. 10 is an enlarged schematic view of circle B in fig. 9.
The device comprises a 1-shell, a 2-silica gel key, a 3-shielding shell, a 4-key circuit board, a 5-feed-through filter, a 6-installation threaded hole, a 7-installation via hole, an 8-welding hole, a 9-filtering through hole, a 10-installation hole, an 11-key via hole, a 21-key soft sleeve, a 31-conductive adhesive tape and a 41-key.
Detailed Description
The following detailed description of specific embodiments of the utility model refers to the accompanying drawings, which illustrate in further detail:
Referring to fig. 1-10, the utility model provides an electromagnetic shielding key device, which comprises a shell 1, a shielding shell 3 and a feed-through filter 5, wherein a plurality of key through holes 11 are formed in the shell 1, a hollow groove is formed in the bottom of the shell, the shielding shell 3 is inserted into the hollow groove of the shell 1 and fixedly connected with the hollow groove, a key circuit board 4 is arranged between the shell 1 and the shielding shell 3, keys 41 on the key circuit board 4 extend outwards through the key through holes 11 on the shell 1, a plurality of filter through holes 9 are formed in the bottom of the shielding shell 3, a plurality of welding holes 8 are formed in the key circuit board 4, the ends of the plurality of feed-through filters 5 penetrate through the filter through holes 9 and are welded and fixed with the key circuit board 4 in the welding holes 8, and the feed-through filter 5 and the key circuit board 4 are welded together, so that electromagnetic filtering and electromagnetic shielding effects are achieved on the key circuit board 4.
Meanwhile, the contact area between the hollow groove of the shell 1 and the shielding shell 3 is provided with the conductive adhesive tape 31, the conductive adhesive tape 31 is made of silver-plated high-elasticity material or nickel-plated high-elasticity material, and the conductive adhesive tape 31 at the contact surface of the shell 1 and the shielding shell 5 is pressed and deformed due to the fixed connection of the shell 1 and the shielding shell 5 by the bolts, so that the shell 1 and the shielding shell 5 are tightly sealed, the whole key circuit board 4 is positioned in a sealing cavity, and the electromagnetic shielding effect is further realized.
In addition, the bottom surface of the hollow tank of the shell 1 is provided with a mounting threaded hole 6, the key circuit board 4 is provided with a mounting through hole 7, the shielding shell 3 is provided with a mounting hole 10, a screw is arranged in the mounting hole 10, and the bottom end of the screw passes through the mounting through hole 7 to be in threaded connection with the mounting threaded hole 6, so that the tight combination of the shell 1 and the shielding shell 3 is realized.
And a silica gel key 2 is arranged between the key circuit board 4 and the shell 1, a key soft sleeve 21 on the silica gel key 2 is sleeved on a key 41 on the key circuit board 4, and the key circuit board 4 can be any type of key circuit board.
Finally, after the shell 1, the silica gel key 2, the shielding shell 3, the key circuit board 4 and the deficient-pass filter 5 are sequentially installed, circuit connection can be completed by connecting a wire harness at the tail end of the feedthrough filter 5, and control of keys 41 in the key circuit board 4 is realized.
The above embodiments are not limited to the technical solution of the embodiments, and the embodiments may be combined with each other to form a new embodiment. The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and any modifications or equivalent substitutions without departing from the spirit and scope of the present utility model should be covered in the scope of the technical solution of the present utility model.
Claims (6)
1. An electromagnetic shielding key device is characterized in that: including casing (1), shield shell (3) and feed-through filter (5), a plurality of button via holes (11) and bottom are equipped with the hollow tank on casing (1), the hollow inslot fixed connection of casing (1) is inserted to shield shell (3), be provided with button circuit board (4) between casing (1) and shield shell (3), button (41) on button circuit board (4) pass button via holes (11) on casing (1) outwards extend, a plurality of filter through-holes (9) have been seted up to the bottom of shield shell (3), a plurality of seam holes (8) have been seted up to button circuit board (4), a plurality of the end of feed-through filter (5) passes filter through-hole (9) and button circuit board (4) and welds fixedly in seam hole (8).
2. An electromagnetic shielding key device according to claim 1, wherein: the contact area between the hollow groove of the shell (1) and the shielding shell (3) is provided with a conductive adhesive tape (31), so that the electromagnetic shielding effect of the device is further improved.
3. An electromagnetic shield key device according to claim 2, wherein: the utility model discloses a shield shell, including casing (1), shield shell, mounting hole (10), mounting hole (7), screw, mounting hole (6) are opened to cavity tank bottom face of casing (1), install via hole (7) have been seted up on button circuit board (4), install hole (10) are provided with in, the bottom of screw passes install via hole (7) and mounting screw hole (6) threaded connection to realize the inseparable combination of casing (1) and shield shell (3).
4. An electromagnetic shielding key device according to claim 3, wherein: a silica gel key (2) is arranged between the key circuit board (4) and the shell (1), and a key soft sleeve (21) on the silica gel key (2) is sleeved on a key (41) on the key circuit board (4).
5. The electromagnetic shield key device of claim 4, wherein: the key circuit board (4) is of any type.
6. An electromagnetic shielding key device according to claim 5, wherein: the material of the conductive adhesive tape (31) is silver plating high-elasticity material or nickel plating high-elasticity material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645668.9U CN220873460U (en) | 2023-09-28 | 2023-09-28 | Electromagnetic shielding key device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645668.9U CN220873460U (en) | 2023-09-28 | 2023-09-28 | Electromagnetic shielding key device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873460U true CN220873460U (en) | 2024-04-30 |
Family
ID=90815330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322645668.9U Active CN220873460U (en) | 2023-09-28 | 2023-09-28 | Electromagnetic shielding key device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220873460U (en) |
-
2023
- 2023-09-28 CN CN202322645668.9U patent/CN220873460U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |