CN217135872U - Reinforced power adapter meeting low-emission requirement - Google Patents

Abstract

The utility model discloses a reinforced power adapter meeting the requirement of low leakage, which comprises a box body, wherein the box body is made of cold-rolled steel plates, an EMI filter is fixedly arranged in the box body, the input end of the EMI filter is provided with a standard three-phase socket, and the standard three-phase socket is just opposite to the input port arranged on the box body; a power panel assembly is fixedly arranged in the box body and comprises a power panel and a shielding shell; the power panel is arranged in the shielding shell. Cold rolled steel is a good conductor and has a satisfactory level of permeability, and it is also a relatively inexpensive material that provides great mechanical strength, so cold rolled steel is chosen for inexpensive satisfactory shielding effectiveness.

Description

Reinforced power adapter meeting low-emission requirement

Technical Field

The utility model relates to a power adapter technical field, concretely relates to satisfy and leak reinforcement type power adapter who penetrates requirement lowly.

Background

The power adapter is a power supply conversion device of small-sized portable electronic equipment and electronic appliances, is widely matched with equipment such as game machines, notebook computers, security cameras, routers and the like, and is widely applied to various fields such as industrial automation control, military equipment, scientific research equipment, communication equipment, power equipment, instruments and meters and the like.

With the acceleration of the informatization process, the application of information processing equipment is more and more extensive, and when the information processing equipment works, the information processing equipment can not only generate electromagnetic radiation, but also generate electromagnetic information leakage, so that confidential information is stolen and restored, and a divulgence event is caused. The electromagnetic protection level of a common power adapter is not high, a large amount of electromagnetic wave leakage is accompanied during working, the radiation frequency is from low frequency to high frequency, and the wave source comprises magnetic field waves, electric field waves and electromagnetic waves. Research shows that electromagnetic waves emitted by a common power adapter without electromagnetic shielding protection treatment can be intercepted and restored within one kilometer in working, and if high-sensitivity equipment is used, the maximum intercepted distance is farther.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a satisfy and hang down reinforcement type power adapter who jets the requirement, mainly solve power adapter's reinforcement and electromagnetism leakage problem.

In order to achieve the above object, the utility model provides a following technical scheme: a reinforced power adapter meeting low-leakage requirements comprises a box body, wherein the box body is made of cold-rolled steel plates.

Furthermore, a high-performance EMI filter is fixedly arranged in the box body, a standard three-phase socket is arranged at the input end of the high-performance EMI filter, and the standard three-phase socket is just opposite to the input port arranged in the box body.

Furthermore, beryllium copper reeds are adhered to the periphery of the input end of the high-performance EMI filter.

Furthermore, an aviation connector is arranged at the output end of the box body.

Furthermore, the connection position of the aviation connector and the box body is provided with an aluminum silver plating conductive rubber plate.

Further, a power board assembly is fixedly arranged in the box body, and the power board assembly comprises a power board and a shielding shell; the power panel is arranged in the shielding shell.

Furthermore, the shielding shell comprises a power supply shell and a power supply shell cover which are made of cold-rolled steel sheets, the power supply shell cover is fixedly covered at the opening of the power supply shell, and a beryllium copper reed is arranged at the contact position of the power supply shell cover and the power supply shell.

Further, the power panel is fixedly installed in the shielding shell through the BOSS column.

Furthermore, heat conducting pads are pasted on two sides of the power supply shell cover and are in close contact with the heating chips of the power supply boards on the same side; the heat conducting pad is in close contact with the box body at the same side.

Furthermore, the box cover is arranged at the mounting opening of the box body, and a beryllium copper reed is arranged on the contact surface of the box cover and the box body.

The technical effects of the utility model are as follows: the equipment belongs to the technical field of power adapter reinforcement and electromagnetic wave information protection. Through the reinforcement of the internal devices of the power adapter, the equipment meets the requirements related to vehicle-mounted vibration. The equipment has the physical protection function of electromagnetic radiation, meets the relevant requirements of class C electromagnetic shielding of GJB4216-2001 XXX electromagnetic leakage emission requirement and measurement for preventing information leakage, and reaches the domestic leading level.

Drawings

Fig. 1 is a schematic front view of a reinforced power adapter satisfying a low-leakage requirement according to the present invention;

fig. 2 is a schematic diagram of a back side of a reinforced power adapter meeting a low-leakage requirement according to the present invention;

fig. 3 is a schematic top view of a reinforced power adapter meeting low-leakage requirements in accordance with the present invention;

fig. 4 is a schematic bottom view of a reinforced power adapter meeting low-leakage requirements in accordance with the present invention;

fig. 5 is a schematic view of the left side of a reinforced power adapter meeting the low-leakage requirement of the present invention;

fig. 6 is a right schematic view of a reinforced power adapter according to the present invention, which satisfies a low-leakage requirement;

fig. 7 is a three-dimensional schematic diagram of a high-performance EMI filter according to the present invention;

fig. 8 is a schematic diagram of a three-dimensional explosion of a reinforced power adapter meeting the low-leakage requirement of the present invention;

fig. 9 is a schematic diagram of a shielding and heat dissipation design of a power board of a reinforced power adapter according to the present invention;

fig. 10 is a schematic diagram of a shielding design of an upper box and a lower box of a reinforced power adapter according to the present invention.

Reference numerals: 1. a box body; 2. a high performance EMI filter; 3. countersunk head screws; 4. a thermally conductive pad; 5. a rubber foot pad; 6. A box cover; 7. a power board assembly; 8. an aerial connector; 9. silver-plated aluminum conductive rubber plates; 10. a beryllium copper reed; 11. a power supply shell cover; 12. a power supply housing; 13. a BOSS column; 14. a power panel.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in figures 1-10, the internal devices of the power adapter adopt a modularized reinforced design, the internal devices are designed in an independent shielding cavity in a classified manner, operation and maintenance are facilitated for a user, the power adapter is fashionable in appearance, light in weight, good in hand feeling and convenient to carry, and equipment meets the relevant requirements of vehicle-mounted vibration. By shielding treatment measures such as component type selection and shell lapping, the all-band electromagnetic shielding material has excellent shielding efficiency and can meet the requirements of GJB4216-2001 'XXX electromagnetic leakage emission requirement and measurement' C level.

As an optimal mode, the structural member that power adapter used all chooses 1 mm's cold-rolled steel sheet to bend and seam crossing welding to form for use, and the seam crossing is polished smoothly, guarantees that the surface is level and smooth. The magnetic shield has the function of preventing the interference of a low-frequency magnetic field, and the shield body adopts a high-permeability and high-saturation magnetic material to absorb or lose an electromagnetic field so as to achieve the purpose of shielding. The energy of low-frequency electromagnetic wave is basically formed by magnetic field energy, the shielding object is the magnetic field component of the electromagnetic wave, the high magnetic permeability and the high electric conductivity are important, cold-rolled steel plate is a good conductor, the magnitude of the magnetic permeability is satisfactory, the cold-rolled steel plate is relatively cheap and can provide large mechanical strength, so that the cold-rolled steel plate is selected to obtain satisfactory shielding efficiency at low cost.

As a preferred mode, the input end of the high-performance EMI filter 2 is designed with a standard three-phase socket, four threaded holes are reserved around the standard three-phase socket, the output end of the high-performance EMI filter 2 is reserved with a cable outlet, and meanwhile, the bottom of the output end is designed with a slotted hole, which is designed to facilitate adjustment of the assembly position of the high-performance EMI filter 2.

As a preferred mode, an external interface hole is reserved at the front end of the box body 1, flat-head press-riveting screws are pressed at the bottom of the box body, beryllium copper spring pieces 10 are pasted on the periphery of the input end of the high-performance EMI filter 2 and then the high-performance EMI filter 2 is arranged at the input end of the box body 1, a standard three-phase socket at the input end of the high-performance EMI filter 2 is ensured to be arranged in an external connection hole reserved in the box body 1, the box body 1 and the input end of the high-performance EMI filter 2 are locked and fixed through countersunk screws, a long circular hole at the output end of the high-performance EMI filter 2 is sleeved in the flat-head press-riveting screw at the bottom of the box body 1, and the output end of the high-performance EMI filter 2 is fixed with the box body 1 through screwing nuts. The input end of the power adapter is provided with a high-performance EMI filter 2 for processing input signals and preventing interference signals from being led in.

As a preferred mode, a power supply board assembly 7 is assembled at the rear end of the box body 1, the power supply board assembly 7 and the box body 1 are locked and fixed through countersunk screws, and rubber pads 5 are assembled at the bottom of the power adapter. For preventing the electromagnetic wave leakage, aviation connector 8 is selected for use to the external interface of 1 output of box body, and suitable size's aluminium silvering conductive rubber board 9 is tailor to the contact surface of aviation connector 8 and box body 1, carries out extrusion deformation to aluminium silvering conductive rubber board 9 when locking box body 1 and aviation connector 8 through countersunk screw and satisfies the electric continuity, reaches the shielding efficiency requirement.

As a preferable mode, for the shielding design of the power panel 14, after the BOSS column 13 is press-riveted to the bottom of the power housing 12, the power panel 14 is screwed and fixed to the BOSS column 13 by three combination screws. After beryllium copper reed 10 is adhered to the upper periphery of the folded edge of the power supply shell cover 11, the power supply shell 12 and the power supply shell cover 11 are locked and fixed by countersunk head screws. The power panel 14 is located in an independent shielding cavity to meet the requirement of shielding effectiveness.

As an optimal mode, for the heat dissipation design of the power panel 14, all paste the heat conduction pad 4 on the upper and lower surface of the power cover 11, the heat conduction pad 4 of lower surface and the chip in close contact with that generates heat of the power panel 14, the heat conduction pad 4 of upper surface and the box body 1 in close contact with, through increasing heat radiating area, make the local heat on the chip that generates heat of the power panel 14 scatter fast, the heat spreads earlier on the power cover 11 after scattering fast, the rethread power cover 11 spreads the heat to the box body 1, in order to reach radiating purpose. The equipment can ensure timely emission of the working heat of the internal components while ensuring the shielding efficiency, and ensure the stable work of the equipment.

As an optimal mode, a limit boss is designed on the side edge of the box body 1, and the box cover 6 is arranged in the box body 1 and then plays a limiting role through the reserved limit boss. Be beryllium copper reed 10 is installed additional to the contact surface of box body 1 and lid 6, extrudees beryllium copper reed 10 when locking box body 1 and lid 6 with countersunk screw and fix and satisfies the electric continuity, and the effectual leakage that blocks box body 1 and lid 6 gap department electromagnetic wave reaches better shielding effect.

The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.

Claims (8)

1. The reinforced power adapter meeting the low-emission requirement is characterized by comprising a box body (1), wherein the box body (1) is made of cold-rolled steel plates, an EMI filter (2) is fixedly arranged in the box body (1), a standard three-phase socket is arranged at the input end of the EMI filter (2), and the standard three-phase socket is just opposite to an input port of the box body (1); a power board assembly (7) is fixedly arranged in the box body (1), and the power board assembly (7) comprises a power board (14) and a shielding shell; the power panel (14) is arranged in the shielding shell.

2. A ruggedized power adapter meeting low emission requirements of claim 1, wherein beryllium copper spring strips (10) are affixed around the input end of the EMI filter (2).

3. A ruggedized power adapter meeting low emission requirements, as claimed in claim 1, wherein the output end of the case (1) is provided with an aviation connector (8).

4. A ruggedized power adapter meeting low-emission requirements of claim 3, wherein a silver-aluminum plated conductive rubber plate (9) is provided at the junction of the aerospace connector (8) and the box body (1).

5. The reinforced power adapter meeting the low-emission requirement of claim 1, wherein the shielding shell comprises a power shell (12) made of cold-rolled steel plates and a power shell cover (11), the power shell cover (11) is fixedly covered at an opening of the power shell (12), and a beryllium copper reed (10) is arranged at a contact part of the power shell cover (11) and the power shell (12).

6. The ruggedized power adapter meeting low-emission requirements of claim 1, wherein the power strip (14) is fixedly mounted in the shielded housing via a BOSS post (13).

7. The reinforced power adapter meeting the requirement of low leakage of claim 5, wherein the heat conducting pads (4) are adhered to both sides of the power shell cover (11), and the heat conducting pads (4) are in close contact with the heating chips of the power panel (14) on the same side; the heat conducting pad (4) is closely contacted with the box body (1) at the same side.

8. The reinforced power adapter meeting the low-leakage requirement is characterized by further comprising a box cover (6), wherein the box cover (6) is arranged at the mounting opening of the box body (1) in a covering mode, and a beryllium copper reed (10) is arranged on the contact surface of the box cover (6) and the box body (1).

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