CN220087843U - Electromagnetic interference prevention filter in mobile communication - Google Patents

Abstract

The utility model discloses an electromagnetic interference prevention filter in mobile communication, which comprises a shell, a main board, an installation piece and a shielding layer, wherein the top of the installation piece is provided with the shell, the shielding layer is arranged around the inside of the shell, the shielding layer is supported by metal, the shell and the installation piece are also made of metal, the installation piece is provided with installation holes, four groups of installation holes are arranged in the installation piece, the installation holes are symmetrical with respect to the central position of the installation piece, and round corners are arranged around the installation piece.

Description

Electromagnetic interference prevention filter in mobile communication

Technical Field

The utility model relates to an electromagnetic interference prevention filter in mobile communication, in particular to an electromagnetic interference prevention filter in mobile communication.

Background

The filter is a filter circuit composed of a capacitor, an inductor and a resistor. The filter can effectively filter the frequency point of the specific frequency or the frequency outside the frequency point in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency, the filtering is an important concept in signal processing, the filtering circuit in the direct current stabilized power supply has the function of reducing alternating current components in the pulsating direct current voltage as far as possible, retaining the direct current components, reducing the ripple coefficient of the output voltage, ensuring that the waveform is smoother, and because a plurality of electronic elements are used in mobile communication, electromagnetic interference can not be generated when the electronic elements are used, and the filter is easy to be subjected to the electromagnetic interference, thereby influencing the using effect of the filter.

Disclosure of Invention

The present utility model is directed to an electromagnetic interference prevention filter for mobile communication, which solves the problem that the use effect of the filter is affected by the fact that many electronic components are used in mobile communication, which inevitably generate electromagnetic interference when the electronic components are used.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an electromagnetic interference prevention filter in mobile communication, includes shell, mainboard, installed part and shielding layer, the top of installed part is provided with the shell, be provided with the shielding layer around the inside of shell, the shielding layer adopts metal support, shell and installed part adopt the metal to make equally, the mounting hole has been seted up in the installed part, the mounting hole is provided with four groups in the installed part, the mounting hole is symmetrical about the central point of installed part, set up round corner around the installed part.

Preferably, the top of the inside of the shell and the top of the mounting piece are provided with radiating fins, the radiating fins are arranged into a plurality of groups, the radiating fins are made of metal, and the radiating fins play a role in radiating heat.

Preferably, a supporting rod is arranged in the shell, and a main board is fixed to the top of the supporting rod through bolts.

Preferably, the main board is welded with an inductor, one side of the top of the main board, which is close to the inductor, is welded with a reactor, the position of the top of the main board, which is close to the right side, is welded with a power control module, and one side of the top of the main board, which is close to the power control module, is welded with a resistor.

Preferably, the inductor and the reactor are electrically connected, the reactor and the power control module are electrically connected, and the power control module, the capacitor and the first terminal are electrically connected.

Preferably, a first wiring end is fixed on one side of the outer part of the shell, a first fixing bolt is screwed in the first wiring end, a first pressing plate is placed on the first fixing bolt and pressed in the first wiring end, an outgoing line end is welded on one side of the outer part of the shell, a second fixing bolt is movably arranged in the outgoing line end, a second pressing plate is arranged on the second fixing bolt and pressed in the outgoing line end, the first wiring end is welded on the main board through a wire, and the outgoing line end is welded on the main board through the wire.

Compared with the prior art, the utility model has the beneficial effects that: the electromagnetic interference prevention filter in the mobile communication has reasonable structure and has the following advantages:

(1) The filter has the effect of anti-electromagnetic interference through being provided with shell, mounting and shielding layer, and current filter receives electromagnetic interference's influence easily to influence the filter work, consequently, through being provided with shell and mounting, shell and mounting adopt the metal to make, and the shielding layer adopts the metal to make equally, and when the electromagnetic wave reaches the shield body surface, because the discontinuous of impedance on the interface of air and metal, the reflection that produces the incident wave has been played the effect of shielding electromagnetic wave.

(2) Through being provided with shell, mainboard, radiator fin and bracing piece messenger device radiating effect's effect is good, current wave filter when using, because inside electronic component can produce a large amount of heat, leads to inside component damage easily, therefore, during the use, through being provided with radiator fin in the inside of shell, radiator fin is provided with a plurality of to increase the heat conduction area, thereby with the outside of heat conduction to the device, make the radiating effect better.

(3) Through inserting the wire in the first wiring end, then through rotating first fixing bolt, first fixing bolt makes first clamp plate remove to first clamp plate will be fixed the wire in the first wiring end of pressure, and the same goes out in the line through inserting the wire, then through rotating second fixing bolt, and the second fixing bolt removes the second clamp plate, and the second clamp plate presses the wire in the line end, and the effect of convenient device installation.

Drawings

FIG. 1 is a schematic top view of the internal structure of the present utility model;

FIG. 2 is a schematic rear perspective view of the present utility model;

FIG. 3 is a schematic cross-sectional elevation view of the present utility model;

fig. 4 is a schematic front perspective view of the present utility model.

In the figure: 1. a housing; 2. an inductor; 3. a reactor; 4. a power control module; 5. a capacitor; 6. a first terminal; 7. a first fixing bolt; 8. a main board; 9. a resistor; 10. a wire outlet end; 11. a second fixing bolt; 12. a mounting member; 13. a mounting hole; 14. a first platen; 15. a shielding layer; 16. a heat radiation fin; 17. a support rod; 18. and a second pressing plate.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the electromagnetic interference prevention filter in mobile communication comprises a shell 1, a main board 8, an installation piece 12 and a shielding layer 15, wherein the top of the installation piece 12 is provided with the shell 1, the shielding layer 15 is arranged around the inside of the shell 1, the shielding layer 15 is supported by metal, the shell 1 and the installation piece 12 are also made of metal, the installation piece 12 is provided with installation holes 13, the installation piece 12 is provided with four groups of installation holes 13, the installation holes 13 are symmetrical with respect to the central position of the installation piece 12, and round corners are arranged around the installation piece 12;

by arranging the shell 1 and the mounting piece 12, the shell 1 and the mounting piece 12 are made of metal, the shielding layer 15 is also made of metal, and when the electromagnetic wave reaches the surface of the shielding body, the electromagnetic wave is shielded due to the reflection of the incident wave generated by the discontinuous impedance at the interface of the air and the metal;

the top of the inside of the shell 1 and the top of the mounting piece 12 are provided with the radiating fins 16, the radiating fins 16 are arranged into a plurality of groups, the radiating fins 16 are made of metal, and the radiating fins 16 are arranged in a plurality of groups through the arrangement of the radiating fins 16 in the inside of the shell 1, so that the heat conduction area is increased, heat is conducted to the outside of the device, and the radiating effect is better;

a supporting rod 17 is arranged in the shell 1, a main board 8 is fixed at the top of the supporting rod 17 through bolts, an inductor 2 is welded on the main board 8, a reactor 3 is welded on one side, close to the inductor 2, of the top of the main board 8, a power control module 4 is welded on the position, close to the right, of the top of the main board 8, and a resistor 9 is welded on one side, close to the power control module 4, of the top of the main board 8;

the inductor 2 is electrically connected with the reactor 3, the reactor 3 is electrically connected with the power supply control module 4, the capacitor 5 and the first wiring terminal 6 are electrically connected, the first wiring terminal 6 is fixed on one side outside the shell 1, the first fixing bolt 7 is screwed in the first wiring terminal 6, the first pressing plate 14 is placed on the first fixing bolt 7, the first pressing plate 14 is pressed in the first wiring terminal 6, the wire outlet end 10 is welded on one side outside the shell 1, the second fixing bolt 11 is movably arranged in the wire outlet end 10, the second pressing plate 18 is arranged on the second fixing bolt 11, the second pressing plate 18 is pressed in the wire outlet end 10, the inner part of the first wiring terminal 6 is welded on the main board 8 through a wire, and the inner part of the wire outlet end 10 is welded on the main board 8 through a wire;

when the device is used, a wire is inserted into the first wiring terminal 6, then the first fixing bolt 7 is rotated, the first fixing bolt 7 enables the first pressing plate 14 to move, so that the wire is pressed in the first wiring terminal 6 by the first pressing plate 14 to be fixed, similarly, the wire is inserted into the wire outlet terminal 10, then the second fixing bolt 11 is rotated, the second pressing plate 18 is moved by the second fixing bolt 11, the wire is pressed in the wire outlet terminal 10 by the second pressing plate 18, the device installation is facilitated, then the shell 1 and the mounting piece 12 are made of metal, the shielding layer 15 is made of metal, and when the electromagnetic wave reaches the surface of the shielding body, the effect of shielding the electromagnetic wave is achieved due to the fact that the impedance of the interface between air and the metal is discontinuous, the reflection generated by the incident wave is achieved, and the heat conduction area is increased by arranging a plurality of heat dissipation fins 16 in the shell 1, so that the heat conduction area is conducted to the outside of the device is further improved, and the effect is better.

Claims (6)

1. An electromagnetic interference prevention filter in mobile communication, which is characterized in that: including shell (1), mainboard (8), installed part (12) and shielding layer (15), the top of installed part (12) is provided with shell (1), be provided with shielding layer (15) around the inside of shell (1), shielding layer (15) adopt metal support, shell (1) and installed part (12) adopt the metal to make equally, install hole (13) have been seted up in installed part (12), install hole (13) are provided with four groups in installed part (12), install hole (13) are symmetrical about the central point of installed part (12), set up into the fillet around installed part (12).

2. An electromagnetic interference preventing filter in mobile communication according to claim 1, wherein: the top of shell (1) inside and the top of installed part (12) are provided with radiator fins (16), radiator fins (16) are set into multiunit, radiator fins (16) adopt the metal to make.

3. An electromagnetic interference preventing filter in mobile communication according to claim 1, wherein: the novel portable electric power box is characterized in that a supporting rod (17) is arranged in the shell (1), and a main board (8) is fixed to the top of the supporting rod (17) through bolts.

4. A filter for preventing electromagnetic interference in mobile communication according to claim 3, wherein: the novel power supply is characterized in that an inductor (2) is welded on the main board (8), a reactor (3) is welded on one side, close to the inductor (2), of the top of the main board (8), a power supply control module (4) is welded on the position, close to the right, of the top of the main board (8), and a resistor (9) is welded on one side, close to the power supply control module (4), of the top of the main board (8).

5. The electromagnetic interference preventing filter in mobile communication according to claim 4, wherein: the inductor (2) is electrically connected with the reactor (3), the reactor (3) is electrically connected with the power control module (4), and the power control module (4), the capacitor (5) and the first wiring terminal (6) are electrically connected.

6. An electromagnetic interference preventing filter in mobile communication according to claim 1, wherein: one side of shell (1) outside is fixed with first wiring end (6), it has first fixing bolt (7) to revolve in first wiring end (6), place first clamp plate (14) on first fixing bolt (7), first clamp plate (14) are pressed in first wiring end (6), outside one side welding of shell (1) has wire outlet end (10), the inside activity of wire outlet end (10) is provided with second fixing bolt (11), be provided with second clamp plate (18) on second fixing bolt (11), the inside at wire outlet end (10) is pressed to second clamp plate (18), and the inside of first wiring end (6) is through wire welding to mainboard (8), the inside of wire outlet end (10) is through wire welding to mainboard (8).