CN211870230U

CN211870230U - Anti-vibration device of switching power supply

Info

Publication number: CN211870230U
Application number: CN202020085552.8U
Authority: CN
Inventors: 雷志飞
Original assignee: Shenzhen Nalin Technology Co ltd
Current assignee: Shenzhen Nalin Technology Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-11-06
Anticipated expiration: 2030-01-15

Abstract

The utility model relates to the field of power electronic systems, and discloses an anti-seismic device of a switching power supply, which comprises a bottom box and a cover plate, wherein the bottom box is provided with an opening, the cover plate can fit on the opening, buffer columns are respectively arranged on the circuit boards of the bottom box and the cover plate, which face to the switching power supply, the buffer columns on the bottom box and the cover plate are arranged in pairs and used for clamping the circuit boards, and the buffer columns are hollow buffer columns capable of generating deformation; all install curved buffer board on the lateral wall of end box, the buffer board is protruding to the circuit board direction and can offset with the edge of circuit board, and the buffer board can produce deformation. Switching power supply's circuit board when receiving to vibrate the production and remove, buffering post and buffer board support the circuit board, can play the cushioning effect to the circuit board, avoid the circuit board to produce violent shake to avoid the components and parts damage on the circuit board, guarantee switching power supply's normal work.

Description

Anti-vibration device of switching power supply

Technical Field

The utility model relates to a power electronic system field especially relates to a switching power supply's antidetonation device.

Background

The switching power supply is a high-frequency power conversion device, which is a kind of power supply, and functions to convert a level voltage into a voltage or current required by a user terminal through different types of architectures. The switching power supply is widely applied to various electronic products, such as medical equipment, refrigerators, liquid crystal displays and the like.

On one hand, under the development of the existing logistics in China, a plurality of electronic devices are transported through logistics, and vibration is inevitably generated in the transportation process; on the other hand, the device where the switching power supply is located may also oscillate during use.

If the circuit board in the switching power supply is vibrated, the components on the circuit board may be short-circuited or fall off due to the vibration, thereby causing the damage of the whole switching power supply.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art switching power supply easily receives the shortcoming of vibrating the damage, provides the switching power supply's that can carry out the protection to switching power supply circuit board antidetonation device.

An anti-vibration device of a switching power supply comprises a bottom box and a cover plate, wherein an opening is formed in the bottom box, and the cover plate can fit on the opening;

buffer columns are respectively arranged on the circuit boards on the bottom box and the cover plate, which face the switching power supply, the buffer columns on the bottom box and the cover plate are arranged in pairs and used for clamping the circuit boards, and the buffer columns are hollow buffer columns capable of deforming; all install curved buffer board on the lateral wall of end box, the buffer board is protruding to the circuit board direction and can offset with the edge of circuit board, the buffer board can produce deformation.

Furthermore, a plurality of heat dissipation holes are formed in the cover plate.

Furthermore, a bolt is fixedly arranged on the bottom box, a screw rod part of the bolt extends into the buffer column from the outside of the bottom box, the large head end of the bolt is remained outside the bottom box, the length of the screw rod part can penetrate through the paired buffer columns and the through hole in the circuit board and extend out of the cover plate, and a nut is arranged on the extending part.

Furthermore, the buffer column is made of rubber.

Furthermore, the buffer plate is made of rubber.

Furthermore, the bottom box lacks a side wall, the bottom surface of the bottom box extends along one end without the side wall to form a connecting line platform, and a connecting column is installed on the connecting line platform.

Furthermore, the connecting column is a hollow rubber cylinder, and a metal pipe which is lower than an external rubber material and is provided with internal threads is arranged inside the connecting column.

The utility model discloses a set up mated buffering post in end box and apron, install the buffer board on the lateral wall of end box for switching power supply's circuit board is receiving to vibrate when producing the removal, and buffering post and buffer board support the circuit board from a plurality of directions, can play the cushioning effect to the circuit board, and curved buffer board is bigger with the area of contact of circuit board, and the buffering effect is better, avoids the circuit board to produce violent shake, thereby avoids the components and parts damage on the circuit board, guarantees switching power supply's normal work.

Drawings

Fig. 1 is a schematic perspective view of an anti-vibration device of a switching power supply according to the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view along the direction B-B of fig. 2.

Reference numerals: the bottom box comprises a bottom box 1, a cover plate 2, a buffer column 3 and a buffer plate 4.

Detailed Description

As shown in fig. 1, the anti-vibration device for the switching power supply comprises a bottom case 1 and a cover plate 2, wherein the material of the bottom case is generally made of metal with certain hardness and is generally produced by aluminum alloy.

The end box 1 is rectangle cavity box body, and the box body does not have the top surface and lacks a lateral wall to form opening up, apron 2 can fit end box 1 on, its size is close with end box 1, still evenly is equipped with a plurality of louvres on the apron 2, makes the heat that switching power supply circuit board produced when the operation can disperse rapidly, thereby avoids components and parts overheated to cause the damage. The cover plate 2 is

Type, vertical part can be sheltered fromThe opening of the fixed part, which is generated because the bottom box 1 lacks a side wall, avoids other foreign matters from falling into the fixed part in the shaking process of the assembled electronic product or the product, thereby causing damage to the circuit board.

Referring to fig. 2, the circuit boards facing the switching power supply are respectively provided with a buffer column 3 on the bottom case 1 and the cover plate 2, and the buffer columns 3 on the bottom case 1 and the cover plate 2 are arranged in pairs for clamping the circuit boards. The buffer column 3 is made of deformable materials, the buffer column 3 is a hollow cylinder, the hole diameter can accommodate a bolt, and the specific size of the buffer column can be manufactured according to production requirements. Two cushion columns 3 that set up in pairs pass through mode fixed mounting such as gluing or butt fusion respectively on the relevant position of end box 1 and apron 2 for when apron 2 closes on end box 1, a pair of cushion column 3 is relative and coaxial, and the bolt can pass apron 2 after a pair of cushion column 3 is passed from end box 1. During production, the bolt can be directly screwed into the buffer column 3 arranged on the bottom box 1, and the length of the bolt can penetrate through the cover plate 2 combined on the bottom box 1 and can be screwed with the nut. After the bolt is directly installed on the bottom box firstly, the installation hole of the circuit board is only required to be aligned with the bolt and then is put into the bolt, the installation hole in the circuit board is not required to be carefully aligned with the buffer column 3, the convenience is brought to installation personnel for positioning, and the assembly is simple and convenient. When receiving vibrations, the circuit board removes along vertical direction, and buffer column 3 can absorb the kinetic energy of circuit board, slows down rocking of circuit board, makes the circuit board remain stable, avoids components and parts to receive the damage.

The bottom surface of end box 1 extends to the one end that end box 1 does not have the lateral wall and forms the line platform, the line bench is installed the spliced pole, a wiring portion and end box 1 fixed connection for exposing the circuit board, the spliced pole is the hollow circular cylinder, the standard component that can hold the screw gets into, the spliced pole can adopt the metal material, inside is attacked the internal thread and is formed, also can adopt the rubber material, then be equipped with the interior threaded tubular metal resonator of in-band that is less than outside rubber material in inside, make the circuit board offset with rubber when the installation, thereby play the cushioning effect.

As shown in fig. 3, the inner sides of the side walls of the bottom case 1 are respectively provided with a buffer plate 4, and the buffer plates 4 are arc-shaped, protruding toward the circuit board and abutting against the edge of the circuit board. The two ends of the buffer plate 4 are fixedly connected with the side wall of the bottom box 1 through welding or screws. Buffer board 4 comprises deformable material, can adopt the material such as having elastic metal or silica gel, adopts silica gel in this embodiment, and silica gel is insulating material, touches components and parts when avoiding buffer board 4 and circuit board to touch, produces the short circuit. When the switching power supply is vibrated, the left and right shaking of the circuit board is absorbed by the buffer board 4, so that the circuit board is prevented from continuously shaking, and the stable connection of each component is kept. And the contact area of the arc-shaped buffer plate and the circuit board is larger, and the buffering effect is better.

When using, at first place the circuit board on end box 1, make the mounting hole on the circuit board align with cushion column 3, the edge of buffer board 4 and circuit board offsets, then close apron 2 on end box 1, let cushion column 3 on the apron 2, the mounting hole of circuit board and cushion column 3 on the end box 1 align, lie in same axis promptly, then pass cushion column 3 and mounting hole with the bolt, screw up the nut and fasten. When receiving a shock, the buffer posts 3 can absorb the momentum of the circuit board moving in the vertical direction, and the buffer plates 4 can absorb the momentum of the circuit board moving in the horizontal direction. Therefore, the stability of the circuit board is kept, the circuit board is prevented from being damaged due to external vibration, and the service life of the switching power supply is prolonged.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The anti-vibration device of the switching power supply is characterized by comprising a bottom box and a cover plate, wherein an opening is formed in the bottom box, and the cover plate can fit on the opening;

2. The anti-vibration device of the switching power supply according to claim 1, wherein the cover plate is provided with a plurality of heat dissipation holes.

3. An anti-vibration device for a switching power supply according to claim 1, wherein a bolt is further fixedly arranged on the bottom case, a screw portion of the bolt extends from the outside of the bottom case into the buffer column, a large end of the bolt is left outside the bottom case, the screw portion has a length capable of passing through the paired buffer columns and the through hole in the circuit board and extending out of the cover plate, and a nut is mounted on the extending portion.

4. An anti-vibration device for a switching power supply according to claim 1, wherein the buffer column is made of rubber.

5. An anti-vibration device for a switching power supply according to claim 1, wherein the buffer plate is made of rubber.

6. An anti-vibration device for a switching power supply according to claim 1, wherein a side wall is absent from the bottom case, a connecting column is installed on the connecting platform, and the bottom surface of the bottom case extends along one end without the side wall to form the connecting platform.

7. An anti-vibration device for a switching power supply according to claim 6, wherein the connection column is a hollow rubber cylinder, and a metal tube with internal threads is arranged inside the connection column and is lower than the external rubber material.