Short-circuit protection device of switching power supply

Abstract

The utility model discloses a short circuit protection device of switching power supply, specifically relates to switching power supply technical field, including shell, mainboard and wiring terminal, the bottom end in the shell is equipped with the auxiliary moving subassembly, the moving subassembly includes driving table, rotating shaft, knob, screw rod, swivel nut and moving table, the bottom end in the shell is equipped with the driving table, the rotating shaft is equipped with the rotating shaft, the knob, screw rod, swivel nut and moving table. A positioning groove is formed in the driving table, and a rotating shaft is movably installed in the positioning groove. By arranging the driving table and the moving table, the mainboard is installed on the moving table for use, the wiring terminal is located on the inner side of the shell for protection and is prevented from being in contact with a foreign object, during wiring, the side cover at the side end of the shell can be opened firstly, then the knob can be rotated, and the lead screw is matched with the threaded sleeve, so that wiring is completed. Therefore, the mobile station can be driven to drive the wiring terminal above the mobile station to move to the outer side of the shell, so that the wiring terminal can perform wiring operation conveniently, and the storage protection of the switching power supply to the wiring terminal is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of switching power supplies, in particular to a short - circuit protection device for a switching power supply. Background Technique

[0002] A switching power supply is a power conversion device that can convert an AC power supply into a DC power supply. It has the advantages of high efficiency, small volume, light weight, reliability, etc., and is therefore widely used in electronic devices. A switching power supply contains three main parts: an input filter circuit, a DC output circuit, and a switching transistor control circuit. It is a device that reduces a certain voltage level to another level through internal electronic components by pulse width modulation. There are accessories such as fuses installed in the internal through - slots of the device for short - circuit protection, or the use process is protected through methods such as a surge soft - start circuit.

[0003] When the switching power supply is in use, the terminal is located on the outside and is in contact with external objects, which is prone to danger and affects its use. Therefore, it needs to be improved to make it more convenient to use. Content of the Utility Model

[0004] The purpose of the utility model is to provide a short - circuit protection device for a switching power supply to solve the problem of poor protection at the terminal of the switching power supply proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A short - circuit protection device for a switching power supply, including a housing, a main board, and a terminal. An auxiliary moving component is provided at the bottom end inside the housing. The moving component includes a driving platform, a rotating shaft, a knob, a lead screw, a nut sleeve, and a moving platform. A driving platform is installed at the bottom end inside the housing. A positioning groove is provided inside the driving platform. A rotating shaft is movably installed inside the positioning groove. One side of the rotating shaft extends to the outside of the housing. A knob is installed on one side of the rotating shaft. A driving cavity is provided on one side of the positioning groove. A sliding groove is provided at the top end of the driving cavity. The other side of the rotating shaft extends into the driving cavity. A lead screw is installed on the other side of the rotating shaft. A nut sleeve is provided on the outside of the lead screw. A slider is installed at the top end of the nut sleeve. The top end of the slider extends to the outside of the driving platform. A moving platform is installed at the top end of the slider.

[0006] Further, a side cover is movably installed on one side of the housing, and a wire groove is provided on one side of the side cover.

[0007] Preferably, a plurality of wire grooves are provided on one side of the side cover, and the plurality of wire grooves are equally spaced.

[0008] Further, a main board is installed at the top end of the moving platform. A terminal is installed on one side of the top end of the main board. A fuse is installed at the top end of the main board. A varistor is provided on one side of the fuse.

[0009] Furthermore, a heat dissipation groove is provided at the top end of the other side of the housing. A wind box is installed at the top end inside the housing. A fan is installed on one side inside the wind box. A wind groove is provided at the bottom end of the wind box.

[0010] Preferably, a plurality of the wind grooves are provided at the bottom end of the wind box, and the plurality of wind boxes are arranged in parallel.

[0011] Furthermore, an installation groove is provided on the other side of the housing. A dehumidifying cylinder is arranged inside the installation groove. A side cap is installed on one side of the dehumidifying cylinder. A drying ball is arranged inside the dehumidifying cylinder. A through groove is provided on the outer side wall of the dehumidifying cylinder.

[0012] Preferably, internal threads are provided inside the installation groove, and external threads are provided on the surface of the dehumidifying cylinder.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing a driving platform and a moving platform, the main board is installed on the moving platform for use, and the wiring terminals are located inside the housing for protection to avoid contact with external objects. When wiring, the side cover at the side end of the housing can be opened first, and then the knob can be rotated. The lead screw and the nut sleeve cooperate to drive the moving platform to drive the wiring terminals above to move to the outside of the housing, so as to facilitate the wiring operation of the wiring terminals, realizing the storage and protection of the wiring terminals of the switching power supply;

[0014] By providing a wind box, the wind box is located at the top end inside the housing, and a fan is installed inside. When the fan is started, the air inside the housing can enter the wind box through the wind groove and then be discharged through the heat dissipation groove, and the external air can enter through the multiple wire grooves on the surface of the side cover. With the help of the flowing air, the heat inside the housing can be assisted to be taken away, strengthening the heat dissipation performance when the switching power supply is used;

[0015] By providing a dehumidifying cylinder, the dehumidifying cylinder is used by being installed inside the installation groove at the side end of the housing through threads. The air inside the housing enters through the through groove on the surface of the dehumidifying cylinder. When contacting the drying ball inside, the drying ball can assist in drying and dehumidifying the air, strengthening the moisture-proof performance inside the switching power supply. Description of the Drawings

[0016] Figure 1 is the front cross-sectional structure schematic diagram of the present utility model;

[0017] Figure 2 is the three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 3 is the front cross-sectional structure schematic diagram of the driving platform and the moving platform of the present utility model;

[0019] Figure 4This is a front view sectional structure diagram of the dehumidification cylinder of the present utility model.

[0020] In the figure: 1. Outer shell; 2. Side cover; 3. Wire groove; 4. Main board; 5. Wiring terminal; 6. Fuse; 7. Varistor; 8. Heat dissipation groove; 9. Air box; 10. Fan; 11. Air groove; 12. Driving platform; 13. Positioning groove; 14. Rotating shaft; 15. Knob; 16. Driving cavity; 17. Slide groove; 18. Lead screw; 19. Nut sleeve; 20. Slide block; 21. Moving platform; 22. Installation groove; 23. Dehumidification cylinder; 24. Side cap; 25. Drying ball; 26. Through groove. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a short-circuit protection device for a switching power supply, including an outer shell 1, a main board 4, and a wiring terminal 5. A side cover 2 is movably installed on one side of the outer shell 1. A wire groove 3 is provided on one side of the side cover 2. A plurality of wire grooves 3 are provided on one side of the side cover 2, and the plurality of wire grooves 3 are equally spaced. A heat dissipation groove 8 is provided at the top of the other side of the outer shell 1. An air box 9 is installed at the top inside the outer shell 1. A fan 10 is installed on one side inside the air box 9. An air groove 11 is provided at the bottom of the air box 9. A plurality of air grooves 11 are provided at the bottom of the air box 9, and the plurality of air boxes 9 are parallelly distributed;

[0023] Specifically, as Figure 1 shown, when in use, the fan 10 inside the air box 9 is started, the gas inside the outer shell 1 can enter the air box 9 through the air groove 11, and then be discharged through the heat dissipation groove 8. The outside air can enter the outer shell 1 through the wire groove 3. In this way, the heat inside the outer shell 1 can be taken away through circulation, achieving the purpose of cooling;

[0024] At the bottom inside the housing 1, an auxiliary moving component is provided. The moving component includes a driving platform 12, a rotating shaft 14, a knob 15, a lead screw 18, a nut 19, and a moving platform 21. The driving platform 12 is installed at the bottom inside the housing 1. A positioning groove 13 is provided inside the driving platform 12. The rotating shaft 14 is movably installed inside the positioning groove 13. One side of the rotating shaft 14 extends to the outside of the housing 1. A knob 15 is installed on one side of the rotating shaft 14. A driving cavity 16 is provided on one side of the positioning groove 13. A sliding groove 17 is provided at the top of the driving cavity 16. The other side of the rotating shaft 14 extends into the driving cavity 16. A lead screw 18 is installed on the other side of the rotating shaft 14. A nut 19 is provided on the outside of the lead screw 18. A slider 20 is installed at the top of the nut 19. The top of the slider 20 extends to the outside of the driving platform 12. The moving platform 21 is installed at the top of the slider 20. A main board 4 is installed at the top of the moving platform 21. A terminal block 5 is installed on one side at the top of the main board 4. A fuse 6 is installed at the top of the main board 4. A varistor 7 is provided on one side of the fuse 6;

[0025] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, during use, under normal conditions, the main board 4 is located inside the housing 1. If it is necessary to use the terminal block 5 for wiring, the side cover 2 can be opened first. Then, by turning the knob 15, the lead screw 18 and the nut 19 cooperate to push the moving platform 21 to move the terminal block 5 outward to the outside of the housing 1;

[0026] An installation groove 22 is provided on the other side of the housing 1. A dehumidifying cylinder 23 is provided inside the installation groove 22. Internal threads are provided inside the installation groove 22. External threads are provided on the surface of the dehumidifying cylinder 23. A side cap 24 is installed on one side of the dehumidifying cylinder 23. A drying ball 25 is provided inside the dehumidifying cylinder 23. Through grooves 26 are provided on the outer side wall of the dehumidifying cylinder 23;

[0027] Specifically, as Figure 1 and Figure 4 shown, during use, the air inside the housing 1 enters the inside of the dehumidifying cylinder 23 through the through grooves 26. When contacting the drying ball 25, the drying ball 25 can assist in drying and dehumidifying the air to prevent the air inside the housing 1 from being humid and affecting the use of the internal components.

[0028] Working principle: When in use, after opening the side cover 2 on the side end of the outer shell 1, the circuit can be introduced into the wire groove 3 on the surface of the side cover 2. Then, the knob 15 can be rotated to drive the moving platform 21 to take the terminal 5 and move it towards the side end to expose it. When the terminal 5 is moved to the outside, the circuit connection operation can be carried out. After the connection is completed, the knob 15 can be rotated in the reverse direction to drive the moving platform 21 to reset. Then, the side cover 2 can be covered for use. At the top inside the outer shell 1, an air box 9 is installed. By starting the fan 10 inside the air box 9, it can assist the air inside the outer shell 1 to enter the air box 9 through the air groove 11 and be discharged to the outside through the heat dissipation groove 8. The outside air can enter the outer shell 1 through the wire groove 3 on the surface of the side cover 2. With the help of the flowing air, it can assist in taking away the heat inside the outer shell 1. At the same time, a dehumidifying cylinder 23 is installed at the side end of the outer shell 1. When the air enters through the through groove 26 on the surface and contacts the drying balls 25 inside the dehumidifying cylinder 23, the drying balls 25 can assist in dehumidifying and drying the air to prevent the inside of the outer shell 1 from getting damp.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. Short-circuit protection device for a switching power supply, comprising a housing (1), a main board (4) and a terminal block (5), characterized in that: An auxiliary moving component is arranged at the bottom end inside the housing (1). The moving component includes a driving table (12), a rotating shaft (14), a knob (15), a lead screw (18), a nut sleeve (19) and a moving table (21). The driving table (12) is installed at the bottom end inside the housing (1). A positioning groove (13) is arranged inside the driving table (12). The rotating shaft (14) is movably installed inside the positioning groove (13). One side of the rotating shaft (14) extends to the outside of the housing (1). A knob (15) is installed on one side of the rotating shaft (14). A driving cavity (16) is arranged on one side of the positioning groove (13). A sliding groove (17) is arranged at the top end of the driving cavity (16). The other side of the rotating shaft (14) extends to the inside of the driving cavity (16). A lead screw (18) is installed on the other side of the rotating shaft (14). A nut sleeve (19) is arranged on the outer side of the lead screw (18). A slider (20) is installed at the top end of the nut sleeve (19). The top end of the slider (20) extends to the outside of the driving table (12). The moving table (21) is installed at the top end of the slider (20).

2. The short-circuit protection device of the switching power supply according to claim 1, characterized in that: A side cover (2) is movably installed on one side of the housing (1). A wire groove (3) is arranged on one side of the side cover (2).

3. The short-circuit protection device of the switching power supply according to claim 2, wherein: A number of wire grooves (3) are arranged on one side of the side cover (2), and the number of wire grooves (3) are equally spaced.

4. The short-circuit protection device of the switching power supply according to claim 1, wherein: A main board (4) is installed at the top end of the moving table (21). A terminal block (5) is installed on one side of the top end of the main board (4). A fuse (6) is installed at the top end of the main board (4). A varistor (7) is arranged on one side of the fuse (6).

5. The short - circuit protection device of the switching power supply according to claim 1, characterized in that: A heat dissipation groove (8) is arranged at the top end of the other side of the housing (1). An air box (9) is installed at the top end inside the housing (1). A fan (10) is installed on one side inside the air box (9). An air groove (11) is arranged at the bottom end of the air box (9).

6. The short - circuit protection device of the switching power supply according to claim 5, characterized in that: A number of air grooves (11) are arranged at the bottom end of the air box (9), and the number of air grooves (11) are parallelly distributed.

7. The short-circuit protection device of the switching power supply according to claim 1, wherein: An installation groove (22) is arranged on the other side of the housing (1). A dehumidifying cylinder (23) is arranged inside the installation groove (22). A side cap (24) is installed on one side of the dehumidifying cylinder (23). A drying ball (25) is arranged inside the dehumidifying cylinder (23). A through groove (26) is arranged on the outer side wall of the dehumidifying cylinder (23).

8. The short-circuit protection device of the switching power supply according to claim 7, wherein: Internal threads are arranged inside the installation groove (22), and external threads are arranged on the surface of the dehumidifying cylinder (23).

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