CN218733826U

CN218733826U - Quasi-resonance switch power supply

Info

Publication number: CN218733826U
Application number: CN202222108452.4U
Authority: CN
Inventors: 唐强; 倪海兵; 倪前龙; 姜小明
Original assignee: Changzhou Baoqi Power Technology Co ltd
Current assignee: Changzhou Baoqi Power Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-03-24
Anticipated expiration: 2032-08-11

Abstract

The utility model provides a quasi-resonance switching power supply, include: a housing; the circuit board is arranged inside the shell; the cover plate is detachably arranged at the top of the shell; the filter frame is fixed at the bottom of the shell, filter holes are formed in the filter frame, and the filter holes are communicated with the inside of the shell; and the fan is fixed at the top of the filter frame. The utility model provides a quasi-resonance switch power supply, through crossing the inside intercommunication of filter frame and casing for increase casing and external gas's circulation rate, avoid being located the inside heat of casing and be not convenient for dispel the heat, so as to cause the problem of switching power supply internal element damage, in addition through the setting of two baffles, be used for sheltering from to crossing the filter frame, avoid switching power supply when not using, the inside that external dust enters into the casing through crossing the filter frame causes the pollution, good safeguard function has.

Description

Quasi-resonance switch power supply

Technical Field

The utility model relates to a switching power supply field especially relates to a quasi-resonance switching power supply.

Background

The switching power supply, also called switching power supply and switching converter, is a high-frequency electric energy conversion device, and the quasi-resonance is a leap of the switching technology, and is characterized in that a resonance element participates in a certain stage of energy conversion, but not in the whole process. The oscillation is asymmetric because the forward and reverse LC circuits have different values, i.e., different oscillation frequencies and different current amplitudes. The normal positive sine half-wave is larger than the negative sine half-wave, so it is often called quasi-resonance, and the quasi-resonance converter is divided into zero current switch quasi-resonance converter and zero voltage switch quasi-resonance converter

The switching power supply who uses at present uses the back for a long time, and its inside can produce a large amount of high temperatures, and the existence of high temperature causes the damage of switching power supply internal component easily, and traditional processing mode sets up corresponding thermovent on the switching power supply casing usually and dispels the heat.

In the related art, the heat dissipation of the switching power supply is performed through the heat dissipation port, so that the corresponding heat dissipation work is performed, but the corresponding protection function is lacked, when the switching power supply is in a shelving state for a long time, external dust easily enters the inside of the switching power supply through the position of the heat dissipation port, the pollution of internal elements is caused, the heat dissipation of subsequently used elements is influenced, and therefore the inside of the switching power supply needs to be cleaned or nursed regularly.

Therefore, it is necessary to provide a quasi-resonant switching power supply to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a quasi-resonance switch power supply has solved and has not had safeguard function to as for the problem that needs the dust to enter into switch power supply easily.

In order to solve the technical problem, the utility model provides a quasi-resonance switch power supply includes:

a housing;

the circuit board is arranged inside the shell;

the cover plate is detachably arranged at the top of the shell;

the filter frame is fixed at the bottom of the shell, filter holes are formed in the filter frame, and the filter holes are communicated with the inside of the shell;

the fan is fixed at the top of the filter frame;

two shrink grooves, two shrink grooves are seted up respectively in the both sides of casing bottom, and the equal sliding connection in inside of two shrink grooves has the baffle, and two one sides that the baffle is relative all run through the filter frame and extend to the inside of filtering the frame, and two baffles extend to the equal fixedly connected with connecting block in one side of filtering the frame inside, and the equal fixedly connected with in top of two connecting blocks is clean to be wiped, and two one sides that the connecting block is relative all are fixed with the magnet piece of mutual absorption.

Preferably, four corners of the inner wall of the shell are fixedly connected with base plates, and the tops of the four base plates are fixedly connected with positioning rods.

Preferably, the positioning holes are formed in four corners inside the circuit board.

Preferably, the circuit board is provided with clamping notches at two sides.

Preferably, the two sides of the bottom of the cover plate are detachably connected with L-shaped plates through screws, and pressing plates are fixedly connected to the inner side surfaces of the two L-shaped plates.

Preferably, the bottom of apron fixedly connected with two installation pieces, the inside of two installation pieces all is seted up threaded hole.

Preferably, the front and the back of the shell are both provided with hidden holes, and the two hidden holes are both provided with fastening bolts.

Compared with the prior art, the utility model provides a quasi-resonance switching power supply has following beneficial effect:

the utility model provides a quasi-resonance switch power supply, through crossing the inside intercommunication of filter frame and casing for increase casing and external gas's circulation rate, avoid being located the inside heat of casing and be not convenient for dispel the heat, so as to cause the problem of switching power supply internal element damage, in addition through the setting of two baffles, be used for sheltering from to crossing the filter frame, avoid switching power supply when not using, the inside that external dust enters into the casing through crossing the filter frame causes the pollution, good safeguard function has.

Drawings

Fig. 1 is a schematic structural diagram of a quasi-resonant switching power supply according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the housing shown in FIG. 1;

FIG. 3 is a bottom view of the housing shown in FIG. 2;

FIG. 4 is a cross-sectional view of the housing shown in FIG. 1;

FIG. 5 is a schematic structural view of the cover plate shown in FIG. 1;

fig. 6 is a schematic structural diagram of the circuit board shown in fig. 1.

Reference numbers in the figures: 1. a housing; 2. a circuit board; 3. a cover plate; 4. a filter frame; 5. a fan; 6. a contraction groove; 7. a baffle plate; 8. connecting blocks; 9. cleaning and wiping; 10. a magnet block; 11. a base plate; 12. positioning a rod; 13. positioning holes; 14. a chucking notch; 15. an L-shaped plate; 16. pressing a plate; 17. mounting blocks; 18. and (5) fastening the bolt.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

First embodiment

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination, wherein fig. 1 is a schematic structural diagram of a quasi-resonant switching power supply according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of the housing shown in FIG. 1; FIG. 3 is a bottom view of the housing of FIG. 2; FIG. 4 is a cross-sectional view of the housing shown in FIG. 1; FIG. 5 is a schematic view of the cover plate shown in FIG. 1; fig. 6 is a schematic structural diagram of the circuit board shown in fig. 1. The quasi-resonant switching power supply includes:

a housing 1;

a circuit board 2, wherein the circuit board 2 is arranged inside the shell 1;

the cover plate 3 is detachably arranged at the top of the shell 1;

the filter frame 4 is fixed at the bottom of the shell 1, and filter holes are formed in the filter frame 4 and communicated with the inside of the shell 1;

the fan 5 is fixed at the top of the filter frame 4;

the two shrinkage grooves 6 are respectively arranged on two sides of the bottom of the shell 1, baffles 7 are respectively connected inside the two shrinkage grooves 6 in a sliding manner, one sides, opposite to the two baffles 7, of the two baffles pass through the filter frame 4 and extend into the filter frame 4, one sides, extending into the filter frame 4, of the two baffles 7 are fixedly connected with connecting blocks 8, the tops of the two connecting blocks 8 are fixedly connected with cleaning wipers 9, and one sides, opposite to the two connecting blocks 8, of the two baffles are fixedly provided with magnet blocks 10 which are mutually adsorbed;

the filter frame 4 is communicated with the interior of the shell 1, so that the circulation rate of the shell 1 and the outside air is increased, and the problem that the internal elements of the switching power supply are damaged due to the fact that heat in the shell 1 is not convenient to dissipate is solved;

through the setting of two baffles 7 for shelter from filtering frame 4, avoid switching power supply when not using, the inside that external dust enters into casing 1 through filtering frame 4 causes the pollution, have good safeguard function.

Backing plates 11 are fixedly connected to four corners of the inner wall of the shell 1, positioning rods 12 are fixedly connected to the tops of the four backing plates 11, and positioning holes 13 are formed in the four corners of the inner portion of the circuit board 2;

through the setting of four backing plates 11, be convenient for support the circuit board 2 that is located the casing 1 inside, through the setting of four locating levers 12 moreover for insert in the locating hole 13 of corresponding position, and then guarantee the location nature of its circuit board 2.

Two sides of the circuit board 2 are provided with clamping notches 14;

the two clamping notches 14 are formed to facilitate the insertion of the two L-shaped plates 15, so that the circuit board 2 is positioned.

The two sides of the bottom of the cover plate 3 are detachably connected with L-shaped plates 15 through screws, and the inner side surfaces of the two L-shaped plates 15 are fixedly connected with pressing plates 16;

through two detachable installations in the bottom of apron 3 of L template 15, the staff of being convenient for carries out the dismouting to the L template 15 of damage and changes, and through the setting of clamp plate 16 moreover for press the both sides of circuit board 2, guarantee that its circuit board 2 is located the stability at four backing plates 11 tops, avoid the circuit board 2 in the switching power supply after the equipment not hard up problem to appear.

The utility model provides a quasi-resonance switching power supply's theory of operation as follows:

during installation, the circuit board 2 is placed inside the shell 1, the circuit board 2 inside the shell 1 is supported through the four base plates 11, the four positioning rods 12 are arranged and used for being inserted into the positioning holes 13 in the corresponding positions, and therefore the positioning performance of the circuit board 2 is guaranteed, finally the cover plate 3 covers the top of the shell 1, and the pressing plates 16 are arranged and used for pressing the two sides of the circuit board 2, and the stability of the circuit board 2 on the tops of the four base plates 11 is guaranteed;

switching power supply is when not using, two connecting blocks 8 of manual pulling, and then can stimulate two baffles 7, setting through two baffles 7, be used for sheltering from filtering frame 4, avoid switching power supply when not using, the inside that external dust enters into casing 1 through filtering frame 4 causes the pollution, and the motion of connecting block 8, can drive two clean 9 movements of wiping, and then can clean the filtering surface of filtering frame 4, and through the setting of two magnet pieces 10, can guarantee the stability behind the 7 relative direction movements of its two baffles.

Second embodiment

Referring to fig. 2 and fig. 5 in combination, a quasi-resonant switching power supply is provided according to a first embodiment of the present application, and a second embodiment of the present application provides another quasi-resonant switching power supply. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the quasi-resonant switching power supply provided by the second embodiment of the present application is different in that two mounting blocks 17 are fixedly connected to the bottom of the cover plate 3, threaded holes are formed in the two mounting blocks 17, hidden holes are formed in the front surface and the back surface of the housing 1, and fastening bolts 18 are arranged in the two hidden holes;

through the setting of two installation pieces 17, can insert casing 1's inside to contact with the front and the back of casing 1 inner wall, two screw holes correspond two respectively and hide the hole moreover, through the setting of two fastening bolt 18, can carry out the chucking to two installation pieces 17, accomplish casing 1 and apron 3's installation.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.

Claims

1. A quasi-resonant switching power supply, comprising:

a housing (1);

the circuit board (2), the circuit board (2) is arranged in the shell (1);

the cover plate (3), the cover plate (3) is detachably arranged on the top of the shell (1);

the filter frame (4) is fixed at the bottom of the shell (1), filter holes are formed in the filter frame (4), and the filter holes are communicated with the inside of the shell (1);

the fan (5), the fan (5) is fixed on the top of the filter frame (4);

two shrink grooves (6), the both sides of casing (1) bottom are seted up respectively in two shrink grooves (6), and the equal sliding connection in inside of two shrink grooves (6) has baffle (7), the inside of straining frame (4) and extending to filtering frame (4) is all run through to the one side that two baffle (7) are relative, and two baffle (7) extend to the equal fixedly connected with connecting block (8) in one side of filtering frame (4) inside, the equal fixedly connected with in top of two connecting block (8) cleans (9), and two one side that connecting block (8) are relative all is fixed with mutual absorbent magnet piece (10).

2. The quasi-resonant switching power supply according to claim 1, characterized in that four corners of the inner wall of the housing (1) are fixedly connected with backing plates (11), and the tops of the four backing plates (11) are fixedly connected with positioning rods (12).

3. The quasi-resonant switching power supply according to claim 2, characterized in that the circuit board (2) has positioning holes (13) at its four corners.

4. Quasi-resonant switching power supply according to claim 1, characterized in that the circuit board (2) is provided with clamping notches (14) on both sides.

5. A quasi-resonant switching power supply according to claim 4, characterized in that both sides of the bottom of the cover plate (3) are detachably connected with L-shaped plates (15) by screws, and the inner side surfaces of both L-shaped plates (15) are fixedly connected with pressure plates (16).

6. The quasi-resonant switching power supply according to claim 1, characterized in that two mounting blocks (17) are fixedly connected to the bottom of the cover plate (3), and threaded holes are formed in the two mounting blocks (17).

7. The quasi-resonant switching power supply according to claim 6, characterized in that the front and back of the case (1) are opened with hidden holes, and the inside of both hidden holes is provided with fastening bolts (18).