CN217157927U - Electromagnetic interference shielding structure - Google Patents
Electromagnetic interference shielding structure Download PDFInfo
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- CN217157927U CN217157927U CN202220521009.7U CN202220521009U CN217157927U CN 217157927 U CN217157927 U CN 217157927U CN 202220521009 U CN202220521009 U CN 202220521009U CN 217157927 U CN217157927 U CN 217157927U
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Abstract
The utility model discloses an electromagnetic interference shielding structure relates to electromagnetic interference shielding technical field, for solving the current transformer during operation problem that easily produces electromagnetic interference. The inside of transformer housing is provided with the iron core, transformer housing's inside is provided with the winding coil, and the winding coil is provided with threely, and the winding coil surrounds the iron core king post of setting in the iron core, be provided with aluminum plate between the winding coil, and aluminum plate is provided with two, transformer housing's lower extreme is provided with the base, the articulated side shield that is provided with in both sides of base upper end, the upper end of side shield all articulates and is provided with top shield, one of them one side of top shield is provided with first fixed box, the other one side of top shield is provided with the fixed box of second, one side of transformer housing is provided with the shielding receiver.
Description
Technical Field
The utility model relates to an electromagnetic interference shielding technical field specifically is electromagnetic interference shielding structure.
Background
Electromagnetic interference is electronic noise which interferes cable signals and reduces signal integrity, the electromagnetic interference is usually generated by electromagnetic radiation generating sources such as motors and machines, transformers are basic equipment for power transmission and distribution, and are devices for changing alternating voltage by utilizing the principle of electromagnetic induction, main components are primary coils, secondary coils and iron cores (magnetic cores), and the electromagnetic interference is widely applied to the fields of industry, agriculture, traffic, urban communities and the like.
However, when the transformer is used, the primary winding coil and the secondary winding coil have large voltage and current changes, which may generate electromagnetic interference, affect the functions of adjacent electronic devices, and even affect the operation of the whole circuit, so that the existing requirements are not met, and the electromagnetic interference shielding structure is proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electromagnetic interference shielding structure to solve the transformer during operation that proposes among the above-mentioned background art and easily produce electromagnetic interference's problem.
In order to achieve the above object, the utility model provides a following technical scheme: electromagnetic interference shielding structure, including transformer housing, transformer housing's inside is provided with the iron core, transformer housing's inside is provided with the winding coil, and the winding coil is provided with threely, and the winding coil surrounds the iron core king post of setting in the iron core, be provided with aluminum plate between the winding coil, and aluminum plate is provided with two, transformer housing's lower extreme is provided with the base, the articulated side shield that is provided with in both sides of base upper end, the upper end of side shield all articulates and is provided with top shield, one of them one side of top shield is provided with first fixed box, another one side of top shield is provided with the fixed box of second, one side of transformer housing is provided with the shielding receiver.
Preferably, one side welding of first fixed box has first stopper, the inside spacing hole that is provided with of first stopper, and spacing hole and first stopper integrated into one piece, one side of the fixed box of second is provided with first spacing groove, the inside of the fixed box of second is provided with T shape pole, the one end of T shape pole runs through and extends to the outside of the fixed box of second, and the fixed box sliding fit of T shape pole and second, the one end that the T shape pole is located the fixed box inside of second is provided with the spring.
Preferably, the inside of shielding receiver is provided with the coil spring, the one end of coil spring has the copper foil in the lap joint, the one end of copper foil sets up the second stopper, the rear side of shielding receiver is provided with the second spacing groove.
Preferably, a ground connection bank is arranged inside the base, and one end of the ground connection bank penetrates through and extends to the outside of the base.
Preferably, the upper end of the top shielding case is provided with three lead holes.
Preferably, the side shield and the top shield are both made of iron-nickel alloy materials.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up aluminum plate between the winding coil, the lower extreme of transformer shell is provided with the base, close the side shield cover of side around the upper end of base, and then close the top shield cover of side shield cover upper end, at this moment will shield the copper foil in the receiver and pull out, and it is fixed through the cooperation of second stopper and second spacing groove after surrounding the side shield cover round, when the iron core in the transformer shell and winding coil operation produce electromagnetic interference, aluminum plate can carry the electromagnetic interference that produces between the winding coil to the ground because of the ground connection setting, and then reduce the electromagnetic interference that produces between the winding coil, outside side shield cover and top shield cover can shield the electromagnetic interference of inside, prevent influencing adjacent electronic equipment, the copper foil is good conductor, can produce the vortex when high frequency alternating leakage flux passes the copper foil, the direction of the magnetic field generated by the eddy current is just opposite to the direction of the leakage magnetic flux, and part of the leakage magnetic flux can be counteracted, so that the electromagnetic interference is further shielded, and the equipment and the whole circuit of the adjacent electronic equipment are not influenced by the electromagnetic interference of the transformer.
2. The utility model discloses a be provided with first fixed box in one side of one of them top shield cover, one side of another top shield cover is provided with the fixed box of second, after top shield cover closed, pulling T shape pole, make first stopper get into first spacing groove, not hard up T shape pole this moment, make T shape pole pass spacing hole on the first stopper and fix through the spring, make first fixed box and the fixed box of second fixed each other, thereby make the top shield cover also fixed, and can align the laminating each other after the top shield cover is fixed, through the arrangement lead-out wire that the pin hole can be convenient, make things convenient for staff's installation.
3. The utility model discloses a be provided with wiring ground row in the inside of base, be provided with a plurality of ground connection holes on wiring ground row, arrange transformer and aluminum plate's earth connection access wiring ground row, arrange through wiring ground and make transformer and aluminum plate's earth connection can follow ground connection hole ground connection and introduce the ground with electromagnetic interference, conveniently carry out the electromagnetic shield, when a plurality of ground connection holes can make a certain ground wire damage, remaining earth connection still can introduce the ground with electromagnetic interference, electromagnetic interference's smooth shielding has been guaranteed.
Drawings
Fig. 1 is a front view of the inner body structure of the present invention;
fig. 2 is a side view of the internal structure of the present invention;
fig. 3 is a top view of the internal structure of the present invention;
fig. 4 is a partially enlarged view of the area a in fig. 3 according to the present invention.
In the figure: 1. a transformer housing; 2. an iron core; 3. a winding coil; 4. an aluminum plate; 5. a base; 6. a side shield; 7. a first stationary box; 8. a second stationary box; 9. a first stopper; 10. a first limit groove; 11. a spring; 12. a T-shaped rod; 13. a shielding storage box; 14. a coil spring; 15. copper foil; 16. a second limiting block; 17. a second limit groove; 18. a ground connection bank; 19. a limiting hole; 20. a top shield; 21. and a lead hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, the present invention provides an embodiment: electromagnetic interference shielding structure, including transformer housing 1, transformer housing 1's inside is provided with iron core 2, transformer housing 1's inside is provided with winding coil 3, winding coil 3 is provided with threely, and winding coil 3 is around setting up in iron core king post of iron core 2, be provided with aluminum plate 4 between the winding coil 3, and aluminum plate 4 is provided with two, transformer housing 1's lower extreme is provided with base 5, the both sides of 5 upper ends of base are articulated to be provided with side shield 6, the upper end of side shield 6 all articulates and is provided with top shield 20, one side of one of them top shield 20 is provided with first fixed box 7, one side of another top shield 20 is provided with the fixed box 8 of second, one side of transformer housing 1 is provided with shielding receiver 13.
Further, one side of the first fixed box 7 is welded with a first limiting block 9, a limiting hole 19 is formed in the first limiting block 9, the limiting hole 19 and the first limiting block 9 are integrally formed, one side of the second fixed box 8 is provided with a first limiting groove 10, a T-shaped rod 12 is arranged in the second fixed box 8, one end of the T-shaped rod 12 penetrates through and extends to the outside of the second fixed box 8, the T-shaped rod 12 is in sliding fit with the second fixed box 8, one end, located inside the second fixed box 8, of the T-shaped rod 12 is provided with a spring 11, one end, located inside the second fixed box 8, of the T-shaped rod 12 is provided with the spring 11, the T-shaped rod 12 penetrates through the limiting hole 19 and enables the first fixed box 7 and the second fixed box 8 to be fixed to each other through the spring 11, so that the top shielding cover 20 is also fixed, and the top shielding cover 20 is convenient to align and laminate to each other.
Further, a coil spring 14 is arranged inside the shielding storage box 13, a copper foil 15 is wound on one end of the coil spring 14, a second limiting block 16 is arranged at one end of the copper foil 15, a second limiting groove 17 is arranged on the rear side of the shielding storage box 13, the copper foil 15 is a good conductor, eddy current can be generated when high-frequency alternating leakage magnetic flux passes through the copper foil 15, the direction of a magnetic field generated by the eddy current is just opposite to the direction of the leakage magnetic flux, part of the leakage magnetic flux can be offset, and further electromagnetic interference is further shielded.
Further, base 5 is inside to be provided with wiring ground row 18, and the one end of wiring ground row 18 runs through and extends to the outside of base 5, is provided with a plurality of ground connection holes on the wiring ground row 18, through wiring ground row 18 make transformer and aluminum plate 4's earth connection can follow the ground connection hole ground connection and introduce electromagnetic interference into the ground, conveniently carry out the electromagnetic shield, when a plurality of ground connection holes can make a certain earth connection damage, remaining earth connection still can introduce electromagnetic interference into the ground, electromagnetic interference's smooth shielding has been guaranteed.
Further, the upper end of top shield cover 20 all is provided with pin hole 21, and pin hole 21 all is provided with threely, aligns the laminating back between top shield cover 20, through the arrangement lead-out wire that pin hole 21 can be convenient, makes things convenient for staff's installation.
Further, the side shield cover 6 and the top shield cover 20 are both made of iron-nickel alloy materials, and the side shield cover 6 and the top shield cover 20 are made of iron-nickel alloy materials and can achieve a good electromagnetic shielding effect.
The working principle is as follows: when the electromagnetic interference shielding box is used, the base 5 is installed, the side shielding covers 6 on the front side and the rear side of the upper end of the base 5 are closed, the top shielding cover 20 on the upper end of the side shielding cover 6 is closed, the copper foil 15 in the shielding storage box 13 is pulled out at the moment, the side shielding covers 6 are fixed by matching the second limiting blocks 16 and the second limiting grooves 17 after surrounding for a circle, when the iron core 2 in the transformer shell 1 and the winding coils 3 run to generate electromagnetic interference, the aluminum plate 4 can transmit the electromagnetic interference generated between the winding coils 3 to the ground due to grounding arrangement, the electromagnetic interference generated between the winding coils 3 is further reduced, the external side shielding covers 6 and the top shielding cover 20 can shield the internal electromagnetic interference to prevent the adjacent electronic equipment from being influenced, the copper foil 15 is a good conductor, eddy current can be generated when high-frequency alternating leakage magnetic flux passes through the copper foil 15, and the direction of the magnetic field generated by the eddy current is just opposite to the direction of the leakage magnetic flux, part of leakage flux can be offset, further shielding electromagnetic interference is carried out, and therefore equipment and whole circuit operation of adjacent electronics are not affected by electromagnetic interference of a transformer, after the second limiting block 16 is taken out of the second limiting groove 17, the copper foil 15 can be retracted into the shielding storage box 13 through the coil spring 14, when the top shielding cover 20 is closed, the T-shaped rod 12 is pulled, the first limiting block 9 enters the first limiting groove 10, the T-shaped rod 12 is loosened, the T-shaped rod 12 penetrates through the limiting hole 19 on the first limiting block 9 and is fixed through the spring 11, the first fixing box 7 and the second fixing box 8 are fixed with each other, so that the top shielding cover 20 is also fixed, the top shielding cover 20 is aligned and attached with each other after being fixed, lead wires can be conveniently arranged through the lead wire holes 21, installation of workers is facilitated, and grounding wires of a transformer and an aluminum plate 4 are connected into the wiring ground row 18, be provided with a plurality of ground connection holes on the ground bar 18 of working a telephone switchboard, through ground bar 18 of working a telephone switchboard make transformer and aluminum plate 4's earth connection can follow ground connection hole ground connection and introduce electromagnetic interference into the ground, conveniently carry out electromagnetic shield, when a plurality of ground connection holes can make a certain ground wire damage, the ground is still introduced electromagnetic interference into the ground to remaining earth connection, has guaranteed electromagnetic interference's smooth shielding.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. Electromagnetic interference shielding structure, including transformer housing (1), its characterized in that: an iron core (2) is arranged in the transformer shell (1), three winding coils (3) are arranged in the transformer shell (1), and the winding coils (3) are arranged around the iron core main column of the iron core (2), an aluminum plate (4) is arranged between the winding coils (3), two aluminum plates (4) are arranged, a base (5) is arranged at the lower end of the transformer shell (1), two sides of the upper end of the base (5) are hinged with side shielding cases (6), the upper ends of the side shielding cases (6) are hinged with top shielding cases (20), one side of one of the top shielding cases (20) is provided with a first fixing box (7), a second fixed box (8) is arranged on one side of the other top shielding case (20), one side of transformer shell (1) is provided with shielding receiver (13).
2. The EMI shielding structure as set forth in claim 1, wherein: the welding of one side of first fixed box (7) has first stopper (9), first stopper (9) inside is provided with spacing hole (19), and spacing hole (19) and first stopper (9) integrated into one piece, one side of the fixed box of second (8) is provided with first spacing groove (10), the inside of the fixed box of second (8) is provided with T shape pole (12), the one end of T shape pole (12) runs through and extends to the outside of the fixed box of second (8), and T shape pole (12) and the fixed box of second (8) sliding fit, the one end that T shape pole (12) are located the fixed box of second (8) inside is provided with spring (11).
3. The EMI shielding structure as set forth in claim 1, wherein: the inside of shielding receiver (13) is provided with coil spring (14), the one end of coil spring (14) has twined book copper foil (15), the one end of copper foil (15) sets up second stopper (16), the rear side of shielding receiver (13) is provided with second spacing groove (17).
4. The EMI shielding structure as set forth in claim 1, wherein: the base (5) is internally provided with a wiring ground row (18), and one end of the wiring ground row (18) penetrates through and extends to the outside of the base (5).
5. The EMI shielding structure as set forth in claim 1, wherein: the upper end of the top shielding cover (20) is provided with three lead holes (21), and the number of the lead holes (21) is three.
6. The EMI shielding structure as set forth in claim 1, wherein: the side shield cover (6) and the top shield cover (20) are both made of iron-nickel alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220521009.7U CN217157927U (en) | 2022-03-11 | 2022-03-11 | Electromagnetic interference shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220521009.7U CN217157927U (en) | 2022-03-11 | 2022-03-11 | Electromagnetic interference shielding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217157927U true CN217157927U (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220521009.7U Active CN217157927U (en) | 2022-03-11 | 2022-03-11 | Electromagnetic interference shielding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217157927U (en) |
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2022
- 2022-03-11 CN CN202220521009.7U patent/CN217157927U/en active Active
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