CN2577535Y - Assembled electromagnetic interference neutralizing apparatus - Google Patents
Assembled electromagnetic interference neutralizing apparatus Download PDFInfo
- Publication number
- CN2577535Y CN2577535Y CN 02236176 CN02236176U CN2577535Y CN 2577535 Y CN2577535 Y CN 2577535Y CN 02236176 CN02236176 CN 02236176 CN 02236176 U CN02236176 U CN 02236176U CN 2577535 Y CN2577535 Y CN 2577535Y
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- assembly
- noise
- electromagnetic interference
- interference canceller
- assembly type
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Abstract
The utility model relates to an assembled electromagnetic interference neutralizing apparatus which comprises a plurality of supporting structures which are arranged at the circumference of a noise assembly and are connected with an independent grounding end of the surface of a printed circuit board to reduce the grounding bounce, receive noises produced by the noise assembly, and guide the noise into the independent grounding end, and a shielding structure which is connected with the supporting structures and is used for shielding the noise assembly, reducing the grounding bounce, preventing the noise produced by the noise assembly from scattering, and insulating noises produced by other noise assemblies in an information handling apparatus. The assembled electromagnetic interference neutralizing apparatus is formed by a metal conductor and is arranged in the area where electromagnetic interference (EMI) is easily generated in the information handling apparatus, the assembled electromagnetic interference neutralizing apparatus uses the metal conductor to form a shield, the electromagnetic interference is conducted to each grounding end from the metal conductor, and the electromagnetic interference produced by a magnetic field of the noise assembly and an electric field is coupled with the grounding end.
Description
(1) technical field
The utility model is to be a kind of electromagnetic interference canceller, and is particularly a kind of by the electromagnetic interference canceller of metallic conductor with the formation assembly type.
(2) background technology
The electromagnetic wave phenomenon is because the dynamically exchange or the variation of electricity, magnetic energy, exist or show with the form of fluctuation, along with the interact phenomenon of borne noise of variation electromagnetic wave in medium of time, that then claim is electromagnetic interference (Electromagnetic Interference; EMI).
By the electromagnetic interference (EMI) that interference source produced, often be the magnetic field that produced by the noise assembly in the information processor and the radiation of electric field, after amplifying, become noise output again, along with integrated circuit (IntegratedCircuit; IC) operating frequency speeds day by day, its probability that produces electromagnetic interference (EMI) also significantly rises, please refer to Fig. 1, noise assembly ground connection schematic diagram for known information processor, mostly contain image component 11, acoustic assembly 12, central processing element 13, clock pulse assembly 14, memory module 15 and power supply module 16 in the general information processing unit, no matter but any assembly all be connected with earth terminal.
But because of each assembly is in each different block, the frequency and the voltage of its work also have nothing in common with each other, so in earth terminal, also include the signal and the electric current of various different frequencies, when the working signal of high speed circuit assembly or high-frequency circuit work block and electric current flow into earth terminal, the electromagnetic interference (EMI) that it produced usually is comprised in the work block of low level, cause ground connection beating (ground bounce) effect and influence the signal of the work and the output of other work block, traditional approach reduces ground connection beating (groundbounce) with multilayer board, but so then causes cost of manufacture too high.
Except the electromagnetic interference (EMI) of above-mentioned earth terminal, each noise assembly is arranged at printed circuit board (PCB) (Printed Circuit Boards; PCB) on 20, also can launch electromagnetic field, please refer to Fig. 2, for the electromagnetic wave emission schematic diagram of known noise assembly, when two noise assemblies are arranged at contiguous position, then 10 electromagnetic waves of being dispersed of noise assembly will disturb the work of other noise assembly 10, even further influence the work of other work block, as mentioned above, for reaching the purpose that suppresses electromagnetic interference (EMI), how can effectively solve the electromagnetic interference (EMI) that the noise assembly is produced, be a technical task that waits to solve.
(3) utility model content
In view of this, the purpose of this utility model is to solve electromagnetic compatibility (Electro-magneticcompatibility; EMC) and the problem of cost, and a kind of electromagnetic interference canceller of assembly type proposed, with the electromagnetic scattering that prevents that the noise group part from being produced, and electromagnetic interference (EMI) is imported earth terminal with the shortest loop (Loop), in case the system high-frequency noise is to the harmful effect that information processor produced, and reduces ground connection and beat (ground bounce) and obtain the effect of covering (shield).
The electromagnetic interference canceller of assembly type of the present utility model, this electromagnetic interference canceller is the printed circuit board surface that is arranged at an information processor, and a noise assembly of this printed circuit board (PCB) covered, be characterized in, this device comprises: a plurality of supporting constructions, this supporting construction be arranged at this noise assembly around, and join with an independent grounding end of this printed circuit board surface, beat and receive the noise that this noise assembly is produced in order to reduce ground connection, and this noise is imported this independent grounding end; An and masking structure, this masking structure and this supporting construction are joined, in order to cover this noise assembly and to reduce ground connection and beat, produce scattering to prevent the noise that this noise assembly is produced, and isolate the noise that other noise assembly is produced in this information processor.
The utility model is the electromagnetic interference canceller that metallic conductor is formed assembly type, be arranged in the work block of easy generation electromagnetic interference (EMI), and form with metallic conductor and to cover, with the power line that prevents each noise assembly and magnetic line of force reciprocation and produce electromagnetic interference (EMI), and this electromagnetic interference (EMI) is conducted to nearest independent grounding end with metallic conductor.
For further specifying the purpose of this utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the noise assembly ground connection schematic diagram of known information processor;
Fig. 2 is the electromagnetic wave emission schematic diagram of known noise assembly;
Fig. 3 is the noise assembly ground connection schematic diagram of electromagnetic interference canceller of the assembly type of the utility model one preferred embodiment;
Fig. 4 is the electromagnetic interference canceller schematic diagram of the assembly type of the utility model one preferred embodiment; And
Fig. 5 is the electromagnetic interference canceller structural representation of the utility model assembly type.
(5) embodiment
Please refer to Fig. 3, be the noise assembly ground connection schematic diagram of the electromagnetic interference canceller of the assembly type of the utility model one preferred embodiment.
The utility model is a work block of avoiding information processor, the electromagnetic interference (EMI) that when common ground, is produced, so each work block is divided in the mode of assembly type, with each noise assembly (as: image component 11, acoustic assembly 12, central processing element 13, clock pulse assembly 14, memory element 15 and power supply module 16 ... or the like) be designed to independent grounding, make the block of respectively working that independently earth terminal G all be arranged, the electromagnetic interference (EMI) that produces because of the difference of operating frequency with the block of avoiding respectively working.
Next please refer to Fig. 4, be the electromagnetic interference canceller schematic diagram of the assembly type of the utility model one preferred embodiment.
The utility model is a kind of electromagnetic interference canceller of assembly type, this electromagnetic interference canceller is printed circuit board (PCB) 20 surfaces that are arranged at information processor, and the noise assembly of printed circuit board (PCB) 20 covered, the electromagnetic interference canceller of each assembly type of the present utility model includes at least: a plurality of supporting constructions 30 and masking structure 40, this supporting construction 30 be arranged at noise assembly 10 around, and join with the independent grounding end on printed circuit board (PCB) (PCB) 20 surfaces, this supporting construction 30 can be formed with screw assembly or SMD LED surface-mount device LED coupling assembling (SMD finger), and be used to receive the noise that the noise assembly is produced, and this noise imported each independent grounding end, and masking structure 40 joins with supporting construction 30, the material of this masking structure 40 can be low-impedance conducting metal, be used to cover the noise assembly, with the noise generation scattering that prevents that the noise group part from being produced, and isolate the noise that other noise assembly is produced in this information processor.
Next be further described with regard to structure division of the present utility model, please refer to Fig. 5, be the electromagnetic interference canceller structural representation of the utility model assembly type.
The electromagnetic interference canceller of assembly type of the present utility model, it is the supporting construction of being formed with screw assembly or SMD LED surface-mount device LED coupling assembling (SMD finger) 30, be arranged at noise assembly 10 around, the dew Xi Qu on this supporting construction 30 and printed circuit board (PCB) (PCB) 20 surfaces joins, and this dew Xi Qu also is connected with internal layer earth terminal G by a tunnel, make this supporting construction 30 can form independently earth terminal, and masking structure 40 is the metal top cover of a low-impedance conducting metal material, and be arranged at the going up of supporting construction 30 to form the baffle of noise assembly 10, when noise assembly 10 produces noise, then can reflect, and its noise be imported internal layer earth terminal G by supporting construction 30 by masking structure 40.The utility model is designed to modular manner with the electromagnetic interference canceller, and form independently earth terminal in each supporting construction place, its effect is to avoid each noise assembly when common ground, the electromagnetic interference (EMI) that produces because of the difference of operating frequency, and by the formed baffle of masking structure, the interference that its effect is produced other noise assemblies for the noise that can prevent scattering, also can cover simultaneously the noise that other noise assembly is produced, for reducing the best mode that ground connection is beated (ground bounce) influence and effectively reduced cost.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.
Claims (13)
1. the electromagnetic interference canceller of an assembly type, this electromagnetic interference canceller is the printed circuit board surface that is arranged at an information processor, and a noise assembly of this printed circuit board (PCB) is covered, and it is characterized in that this device comprises:
A plurality of supporting constructions, this supporting construction be arranged at this noise assembly around, and join with an independent grounding end of this printed circuit board surface, beat and receive the noise that this noise assembly is produced in order to reduce ground connection, and this noise is imported this independent grounding end; And
One masking structure, this masking structure and this supporting construction are joined, and in order to cover this noise assembly and to reduce ground connection and beat, produce scattering to prevent the noise that this noise assembly is produced, and isolate the noise that other noise assembly is produced in this information processor.
2. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this independent grounding end of this supporting construction and this printed circuit board surface joins, and this independent grounding end is that one of this printed circuit board surface is revealed Xi Qu.
3. the electromagnetic interference canceller of assembly type as claimed in claim 2 is characterized in that, this reveals Xi Qu and also is connected with an internal layer ground plane.
4. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, the material of this masking structure is a low-impedance conducting metal.
5. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this supporting construction is a screw assembly.
6. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this supporting construction is a SMD LED surface-mount device LED coupling assembling.
7. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be an image component.
8. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be an acoustic assembly.
9. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be a central processing element.
10. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be a clock pulse assembly.
11. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be a memory element.
12. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that, this noise assembly can be a power supply module.
13. the electromagnetic interference canceller of assembly type as claimed in claim 1 is characterized in that this information processing apparatus is changed to a notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02236176 CN2577535Y (en) | 2002-05-20 | 2002-05-20 | Assembled electromagnetic interference neutralizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02236176 CN2577535Y (en) | 2002-05-20 | 2002-05-20 | Assembled electromagnetic interference neutralizing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577535Y true CN2577535Y (en) | 2003-10-01 |
Family
ID=33710545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02236176 Expired - Fee Related CN2577535Y (en) | 2002-05-20 | 2002-05-20 | Assembled electromagnetic interference neutralizing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577535Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365351A (en) * | 2018-01-22 | 2018-08-03 | 联想(北京)有限公司 | A kind of Earth noise cancellation element, electronic equipment |
-
2002
- 2002-05-20 CN CN 02236176 patent/CN2577535Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365351A (en) * | 2018-01-22 | 2018-08-03 | 联想(北京)有限公司 | A kind of Earth noise cancellation element, electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031001 |