CN214507746U

CN214507746U - Switch power supply

Info

Publication number: CN214507746U
Application number: CN202120791030.4U
Authority: CN
Inventors: 马瑞杰; 孟伟; 施春华
Original assignee: Shanghai Musa Electronic Technology Co ltd
Current assignee: Shanghai Musa Electronic Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-10-26
Anticipated expiration: 2031-04-16

Abstract

The application relates to a switching power supply, which comprises a base, a shell and an internal circuit board, wherein the internal circuit board is connected to the top surface of the base through a connecting seat, the shell is detachably connected to the top surface of the base, and the internal circuit board is positioned in the shell; the top surface of the base is connected with a radiating fin which is vertical to the base and is close to the internal circuit board; the lateral wall of casing has seted up first air intake, and the window has been seted up to the casing top surface, and window department is equipped with the air exhauster for take out the heat in the casing. This application has the effect that improves the radiating effect.

Description

Switch power supply

Technical Field

The present application relates to the field of power supplies, and more particularly, to a switching power supply.

Background

A switch mode power supply, also called a switching power supply or a switching converter, is a high frequency power conversion device, which is a kind of power supply. The function is to convert a level voltage into a voltage or current required by the user terminal through different types of architectures. The input of the switching power supply is generally an ac power supply or a dc power supply, and the output is generally an apparatus requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two.

In the correlation technique, switching power supply includes bottom plate, casing and internal circuit board, and internal circuit board installs in the top surface of bottom plate, and casing detachably connects in the top surface of bottom plate, and the casing is to cover and establishes the setting of internal circuit board, and a plurality of ventilation holes have been seted up in the casing outside for the heat dissipation.

In view of the above-mentioned related technologies, the inventor believes that the internal circuit board generates a lot of heat during operation, and the heat dissipation speed of the ventilation holes on the housing is slow, resulting in a poor heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

In order to improve the radiating effect, the application provides a switching power supply.

The application provides a switching power supply adopts following technical scheme:

a switching power supply comprises a base, a shell and an internal circuit board, wherein the internal circuit board is connected to the top surface of the base through a connecting seat, the shell is detachably connected to the top surface of the base, and the internal circuit board is positioned in the shell;

the top surface of the base is connected with a radiating fin which is vertical to the base and is close to the internal circuit board;

the air conditioner is characterized in that a first air inlet is formed in the outer side wall of the shell, a window is formed in the top surface of the shell, and an exhaust fan is arranged at the window and used for extracting heat in the shell.

Through adopting above-mentioned technical scheme, being provided with of fin does benefit to better heat dissipation, and the air exhauster makes the air current in the casing upwards flow, just cooperates the fin to dispel the heat to the radiating effect has been improved.

Optionally, the cross section of each radiating fin is arranged in an L-shaped structure, the number of the radiating fins is four, the four radiating fins are arranged around the connecting seat and the internal circuit board, and right angles of the four radiating fins are respectively close to four corners of the connecting seat;

the first air inlets are located on four sides of the shell respectively, the first air inlets are close to the base, and the first air inlets are located between two adjacent radiating fins.

Through adopting above-mentioned technical scheme, the structure and the position of four fin are favorable to cooperating the casing and form vertically heat dissipation channel, and four first air intakes are favorable to four heat dissipation channel air intakes to further improve the radiating effect.

Optionally, the heat sink is detachably connected to the base, the heat sink is connected to a locking component, and the locking component is detachably connected to the top surface of the base and used for locking the heat sink.

Through adopting above-mentioned technical scheme, fin detachable sets up and is favorable to changing ageing or damaged fin, and locking Assembly's setting is favorable to locking or unblock fin faster.

Optionally, the locking assembly includes a mounting block, a locking rod, a control rod and a locking bolt, the mounting block is connected to a side surface of the heat sink far away from the connecting seat, four grooves into which bottoms of the mounting block are inserted are formed in the top surface of the base, the four grooves are arranged in a matrix, and bottoms of the corresponding mounting blocks are slidably connected to the corresponding grooves;

the control rod is connected with the locking rod and used for workers to control the locking rod to be inserted into the connecting groove or retracted into the mounting block;

the control rod is connected with an installation plate, the locking bolt is connected with the installation plate through a bolt, the locking bolt is vertically arranged, the side surface, away from the radiating fin, of the installation block is connected with a horizontal plate, and the top surface of the horizontal plate is provided with a positioning hole for allowing one end, away from the bolt cap, of the locking bolt to penetrate through;

when the locking rod is inserted into the connecting groove, the locking bolt is opposite to the positioning hole.

Through adopting above-mentioned technical scheme, the setting of control lever and locking lever is favorable to the workman to lock the installation piece fast, and the locking bolt is rotated this moment for the locking bolt passes the locating hole and can prescribe a limit to the position of control lever, thereby is convenient for install the fin fast.

Optionally, the base is connected with dampproofing case, dampproofing case is and surrounds base and casing setting, second air intake and air outlet have been seted up to dampproofing case, dampproofing case is equipped with the door body that is used for opening or closing dampproofing case.

Through adopting above-mentioned technical scheme, being provided with of dampproofing case does benefit to dampproofing, reduces the condition of short circuit, and second air intake and air outlet on the dampproofing case are favorable to the heat dissipation to improve the radiating effect.

Optionally, the second air inlet is located on the bottom surface of the moisture-proof box, the second air inlet is connected with a blower, the air outlet is located on the top surface of the moisture-proof box, and the air outlet is opposite to the second air inlet.

Through adopting above-mentioned technical scheme, being provided with of second air intake, hair-dryer and air outlet does benefit to high-efficient dampproofing, improves simultaneously and takes away thermal efficiency to improve the radiating effect.

Optionally, a filter screen is connected in the second air inlet, and the filter screen is located below the blower.

Through adopting above-mentioned technical scheme, being provided with of filter screen does benefit to and reduces the foreign matter and gets into dampproofing case to make the hair-dryer keep normal operating condition.

Optionally, the area of the air outlet is larger than that of the second air inlet, and a dust screen is connected in the air outlet.

Through adopting above-mentioned technical scheme, be favorable to the air-out better, and dustproof, reduce the dust and get into dampproofing case.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heat fins are arranged to be beneficial to better heat dissipation, the exhaust fan enables air flow in the shell to flow upwards and be matched with the heat dissipation fins to dissipate heat, and therefore the heat dissipation effect is improved.

2. The structure and the position of the four radiating fins are favorable for being matched with the shell to form a vertical radiating channel, and the four first air inlets are favorable for the air inlet of the four radiating channels, so that the radiating effect is further improved.

3. The second air inlet, the blower and the air outlet are arranged to be beneficial to efficient damp-proof, and meanwhile, the efficiency of taking away heat is improved, so that the heat dissipation effect is improved.

Drawings

Fig. 1 is an exploded schematic diagram of a switching power supply in the present embodiment.

Fig. 2 is a sectional view of a switching power supply in the present embodiment.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Description of reference numerals: 1. a base; 2. a housing; 3. an internal circuit board; 4. a moisture-proof box; 5. a connecting seat; 6. a heat sink; 7. a first air inlet; 8. a window; 9. an exhaust fan; 10. a door body; 11. a second air inlet; 12. an air outlet; 13. a filter screen; 14. a dust screen; 15. a blower; 16. mounting blocks; 17. a locking lever; 18. a control lever; 19. a locking bolt; 20. a groove; 21. a chute; 22. connecting grooves; 23. mounting a plate; 24. a horizontal plate; 25. and (7) positioning the holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a switching power supply. Referring to fig. 1, a switching power supply, includes base 1, casing 2, internal circuit board 3 and dampproofing case 4, and base 1 is connected in the interior bottom surface of dampproofing case 4, and internal circuit board 3 is connected in the top surface of base 1 through connecting seat 5, and casing 2 detachably connects in the top surface of base 1, and casing 2 is the cover and establishes the setting of internal circuit board 3. The top surface of base 1 is connected with four fin 6, and fin 6 is perpendicular with base 1, and four fin 6 are around the setting of inside circuit board 3. The outer side wall of the shell 2 is provided with a first air inlet 7 for air inlet; the top surface of the shell 2 is provided with a window 8, and the window 8 is provided with an exhaust fan 9 for extracting heat in the shell 2.

Referring to fig. 1, a door 10 for opening or closing the moisture-proof box 4 is opened on one side surface of the moisture-proof box 4, and the base 1 can be installed in the moisture-proof box 4 by opening the door 10. The second air inlet 11 has been seted up to the bottom surface of dampproofing case 4, and the air outlet 12 has been seted up to the top surface of dampproofing case 4, is favorable to dampproofing, reduces the condition of short circuit, and second air inlet 11 and air outlet 12 on the dampproofing case 4 are favorable to the heat dissipation to improve the radiating effect.

Referring to fig. 1 and 2, in order to reduce the foreign matters from entering the moisture-proof box 4, a filter screen 13 is fixed at the second air inlet 11, and a dust screen 14 is fixed at the air outlet 12.

Referring to fig. 1 and 2, in order to further improve the moisture-proof effect, a blower 15 is fixed at the second air inlet 11, the blower 15 is located above the filter 13, the air outlet 12 is arranged opposite to the second air inlet 11, and the area of the air outlet 12 is larger than that of the second air inlet 11. The blower 15 is used to blow air into the moisture-proof box 4, and the air flow flows toward the air outlet 12.

Referring to fig. 1, in order to improve the heat dissipation effect, the cross section of each of the heat dissipation fins 6 is formed into an L-shaped structure, the right angles of four heat dissipation fins 6 are respectively close to four corners of the connecting seat 5, and two adjacent heat dissipation fins 6 are mutually matched to form a heat dissipation channel. The number of the first air inlets 7 is also four, the four first air inlets 7 are respectively located on four side surfaces of the shell 2, the first air inlets 7 are close to the base 1, and the four first air inlets 7 are respectively communicated with the four heat dissipation channels.

Referring to fig. 1, in order to facilitate replacement of the heat sink 6 and ensure normal heat dissipation function, the heat sink 6 is detachably connected to the base 1, and the heat sink 6 is connected to a locking assembly, which is detachably connected to the top surface of the base 1, so as to lock or unlock the heat sink 6.

Referring to fig. 1 and 3, the locking assembly includes a mounting block 16, a locking rod 17, a control rod 18 and a locking bolt 19, wherein the mounting block 16 is vertically arranged and fixed on the side of the heat sink 6 away from the connecting base 5. Four grooves 20 for inserting the bottom of the mounting block 16 are formed in the top surface of the base 1, the four grooves 20 are arranged in a matrix, and the four grooves 20 are respectively close to four corners of the connecting seat 5. The bottom of the corresponding mounting block 16 is slidably connected within the corresponding recess 20. One side surface of the mounting block 16, which is far away from the heat sink 6, is provided with a sliding groove 21, the sliding groove 21 is close to the bottom of the mounting block 16, the locking rod 17 is slidably connected in the sliding groove 21, and the groove wall of the groove 20 is provided with a connecting groove 22 for inserting the locking rod 17. The control rod 18 is slidably connected to the top surface of the mounting block 16, the control rod 18 is vertically arranged, and the bottom end of the control rod 18 is fixedly connected with the locking rod 17 for a worker to control so that the locking rod 17 is inserted into the connecting groove 22 or the retraction sliding groove 21. When the bottom of the mounting block 16 is slid into the groove 20, the connecting groove 22 is opposed to the sliding groove 21.

Referring to fig. 3, a horizontally disposed mounting plate 23 is fixed to the outer side of the control rod 18, and the top of the mounting plate 23 is close to the mounting block 16. The locking bolt 19 is bolted on the top surface of mounting panel 23, and locking bolt 19 is vertical setting, and the side that spout 21 notch place on the installation piece 16 is fixed with horizontal plate 24, and horizontal plate 24 is located the below of mounting panel 23. The top surface of the horizontal plate 24 is provided with a positioning hole 25 for the end of the locking bolt 19 far away from the bolt cap to pass through. When the locking lever 17 is inserted into the coupling groove 22, the locking bolt 19 is opposed to the positioning hole 25, and the worker rotates the locking bolt 19 so that the locking bolt 19 passes downward through the positioning hole 25.

The implementation principle of the switching power supply in the embodiment of the application is as follows: starting the blower 15 and the exhaust fan 9, enabling airflow in the moisture-proof box to flow towards the air outlet 12, enabling part of the airflow to enter the shell 2 from the four first air inlets 7, flow towards the exhaust fan 9 through the heat dissipation channel and the heat dissipation fins 6, taking away heat of the heat dissipation fins 6 and the internal circuit board 3 in the process, and enabling the heat to flow out from the window 8 and the air outlet 12, so that the heat dissipation effect is improved;

when replacing the heat sink 6, the worker first detaches the locking bolt 19 and then pulls the control rod 18, so that the control rod 18 drives the locking rod 17 to retract into the sliding groove 21, further unlocks the mounting block 16, and then replaces the new heat sink 6. The mounting block 16 of the new heat sink 6 is inserted into the groove 20, the control rod 18 is pushed, the control rod 18 drives the locking rod 17 to extend out of the sliding slot 21 and to be inserted into the connecting slot 22, and finally the locking bolt 19 is rotated, so that the locking bolt 19 is inserted into the positioning hole 25. Thereby facilitating the quick installation of the heat radiating fins 6 and ensuring the normal heat radiating function.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A switching power supply, characterized by: the circuit board comprises a base (1), a shell (2) and an internal circuit board (3), wherein the internal circuit board (3) is connected to the top surface of the base (1) through a connecting seat (5), the shell (2) is detachably connected to the top surface of the base (1), and the internal circuit board (3) is positioned in the shell (2);

the top surface of the base (1) is connected with a radiating fin (6), and the radiating fin (6) is perpendicular to the base (1) and close to the internal circuit board (3);

first air intake (7) have been seted up to the lateral wall of casing (2), window (8) have been seted up to casing (2) top surface, window (8) department is equipped with air exhauster (9) for take out the heat in casing (2).

2. A switching power supply according to claim 1, characterized in that: the cross section of each radiating fin (6) is arranged in an L-shaped structure, the number of the radiating fins (6) is four, the four radiating fins (6) are arranged around the connecting seat (5) and the internal circuit board (3), and the right angles of the four radiating fins (6) are respectively close to four corners of the connecting seat (5);

the number of the first air inlets (7) is four, the first air inlets (7) are respectively located on four side faces of the shell (2), the first air inlets (7) are close to the base (1), and the first air inlets (7) are located between two adjacent radiating fins (6).

3. A switching power supply according to claim 1, characterized in that: the cooling fin (6) is detachably connected with the base (1), the cooling fin (6) is connected with a locking component, and the locking component is detachably connected with the top surface of the base (1) and used for locking the cooling fin (6).

4. A switching power supply according to claim 3, characterized in that: the locking assembly comprises mounting blocks (16), locking rods (17), control rods (18) and locking bolts (19), the mounting blocks (16) are connected to the side faces, away from the connecting seat (5), of the radiating fins (6), four grooves (20) for inserting the bottoms of the mounting blocks (16) are formed in the top face of the base (1), the four grooves (20) are arranged in a matrix mode, and the bottoms of the corresponding mounting blocks (16) are connected to the corresponding grooves (20) in a sliding mode;

the locking rod (17) is connected in the mounting block (16) in a sliding manner, a connecting groove (22) for inserting the locking rod (17) is formed in the groove wall of the groove (20), the control rod (18) is connected on the top surface of the mounting block (16) in a sliding manner, and the control rod (18) is connected with the locking rod (17) and used for enabling a worker to control the locking rod (17) to be inserted into the connecting groove (22) or retracted into the mounting block (16);

the control rod (18) is connected with an installation plate (23), the locking bolt (19) is connected to the installation plate (23) through a bolt, the locking bolt (19) is vertically arranged, the side face, away from the radiating fin (6), of the installation block (16) is connected with a horizontal plate (24), and a positioning hole (25) for allowing one end, away from the bolt cap, of the locking bolt (19) to penetrate through is formed in the top face of the horizontal plate (24);

when the locking lever (17) is inserted into the connecting groove (22), the locking bolt (19) is opposed to the positioning hole (25).

5. A switching power supply according to claim 1, characterized in that: base (1) is connected with dampproofing case (4), dampproofing case (4) are and surround base (1) and casing (2) setting, second air intake (11) and air outlet (12) have been seted up in dampproofing case (4), dampproofing case (4) are equipped with and are used for opening or close the door body (10) of dampproofing case (4).

6. The switching power supply according to claim 5, wherein: the second air inlet (11) is located on the bottom surface of the moisture-proof box (4), the second air inlet (11) is connected with a blower (15), the air outlet (12) is located on the top surface of the moisture-proof box (4), and the air outlet (12) is opposite to the second air inlet (11).

7. The switching power supply according to claim 6, wherein: and a filter screen (13) is connected in the second air inlet (11), and the filter screen (13) is positioned below the blower (15).

8. The switching power supply according to claim 5, wherein: the area of the air outlet (12) is larger than that of the second air inlet (11), and a dust screen (14) is connected in the air outlet (12).