Switching power supply with wiring protection

Abstract

The application discloses a switching power supply with wiring protection, which comprises a shell, a mounting groove is formed in the outer surface of the upper end of the shell, a screw rod is fixedly connected to the lower side of the inner surface of the mounting groove, a wire nose is arranged on the outer side of the screw rod, a nut is threadedly connected to the outer surface of the screw rod, an extrusion assembly is arranged at the lower side of the mounting groove, the extrusion assembly comprises a receiving groove formed in the inner side of the shell, an elastic plate is fixedly connected to the inner surface of the receiving groove, and an extrusion plate is slidably connected to the inner surface of the mounting groove. The extrusion assembly is arranged, the wire nose can be stably clamped through the cooperation of the extrusion plate and the pressing plate, the elastic force borne by the extrusion plate is transmitted to the nut through the wire nose and the pressing plate, the nut can effectively reduce the probability of accidental loosening under the action of the elastic force, and the switching power supply failure rate is reduced, and the connection stability and safety of the power line and the switching power supply are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a switching power supply with wiring protection. BACKGROUND

[0002] The switching power supply is a power supply device that realizes power conversion through high-frequency switching technology, and its main functions are AC to DC conversion, high-frequency inversion, and transformer coupling, etc. It is widely used in various electronic devices such as industrial automation, electronic communication, medical equipment, and automobile electronics due to its high efficiency, miniaturization, and light weight.

[0003] The switching power supply needs to be electrically connected with the power line during use. In the prior art, the power line is usually connected by pressing the nut, for example, the Chinese patent application with the publication number CN222107037U discloses a switching power supply convenient for wiring. The movable block drives the abutting block to slide, so that the abutting block is attached to the connecting line to fix the connecting line. The clamping block is slid into one of the clamping grooves to clamp and limit the plate and the rod, thereby improving the practicality of the switching power supply.

[0004] For some switching power supplies applied in automobile electronics (such as vehicle gateway devices, etc.), they are usually installed inside the vehicle. During long-time driving, the vehicle will vibrate at a certain frequency due to bumps. In the existing switching power supply wiring method, the movable block and the rod will loosen due to long-time vibration, which will cause poor contact between the power supply line and the switching power supply, thereby increasing the failure rate of the switching power supply and adversely affecting the working stability of the switching power supply. SUMMARY

[0005] The present application provides a switching power supply with wiring protection to solve the above technical problems.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A switching power supply with wiring protection, comprising a shell, an installation slot is formed on the outer surface of the upper end of the shell, a screw rod is fixedly connected to the inner surface of the lower side of the installation slot, a wire nose is sleeved on the outer side of the screw rod, a nut is threadedly connected to the outer surface of the screw rod, and an extrusion assembly is arranged on the lower side of the installation slot.

[0008] The extrusion assembly comprises a receiving groove formed in the inner side of the shell, an elastic plate is fixedly connected to the inner surface of the receiving groove, an extrusion plate is slidably connected to the inner surface of the installation slot, a push plate is fixedly connected to the outer surface of the lower end of the extrusion plate, and the lower end of the push plate penetrates into the interior of the receiving groove and is in sliding contact with the outer surface of the upper end of the elastic plate.

[0009] Preferably, the elastic plate outer surface is inclined, the pressing plate is located below the wire nose, the nut is sleeved between the wire nose and the pressing plate, the elastic plate outer surface is provided with a pressure fracture, the pressure fracture is arranged in a ring array, the pressing plate is circular arc-shaped, the wire nose rear end is fixedly connected with a wire sleeve, and the wire nose is connected with the power cord through the wire sleeve.

[0010] Preferably, the receiving groove is internally provided with a anti-off component, the anti-off component comprises a capsule one fixedly connected with the receiving groove inner surface lower end, the capsule one upper end outer surface is in contact with the elastic plate lower surface, the shell inner side is embeddedly fixedly connected with a conduit one and a conduit two, and the conduit one two ends are in communication with the capsule one inside.

[0011] Preferably, the conduit two lower end is in communication with the conduit one inside, the conduit two penetrates to the screw rod inner side, the screw rod outer surface is embeddedly provided with a limiting groove, the limiting groove inner surface is fixedly connected with a capsule two, the capsule two is fixedly connected with a contact plate away from the screw rod one side, and the contact plate upper and lower ends are slidingly connected with the limiting groove inner surface.

[0012] Preferably, the contact plate outer surface is in contact with the wire nose inner side, the capsule one, the capsule two and the limiting groove are all circular ring-shaped, the contact plate is arranged in a ring array, the contact plate is circular arc-shaped and made of conductive material, the conduit two is T-shaped and in communication with the capsule two inside.

[0013] Preferably, the power cord outer side is provided with a clamping component, the clamping component comprises a displacement groove provided on the shell outer surface, the displacement groove inner side is slidingly connected with a sliding seat, the sliding seat upper end outer surface is fixedly connected with a movable seat, and the movable seat is arranged in two groups and symmetrically distributed on the power cord two sides.

[0014] Preferably, the movable seat inner side is U-shaped, the movable seat inner surface is fixedly connected with a extrusion sleeve, the extrusion sleeve outer surface is in contact with the power cord outer side, the extrusion sleeve is made of elastic insulating material, the extrusion sleeve outer surface is provided with an anti-skid groove, and the anti-skid groove is arranged in several groups and equidistantly distributed on the extrusion sleeve outer surface.

[0015] Preferably, the shell rear end outer surface is provided with a notch, the notch is located below the displacement groove, two groups of the sliding seat are fixedly connected with a traction strip, the traction strip is made of flexible material, the traction strip outer surface is rotatably connected with an adjusting rod, the adjusting rod lower end penetrates to the notch inside and is threadedly connected with the shell, and the adjusting rod upper end is fixedly connected with a baffle disc.

[0016] Preferably, a connecting groove is arranged on the outer surface of the upper end of the shell, a mounting hole is arranged on the inner surface of the lower end of the connecting groove, a sliding groove is arranged on the outer surface of the upper end of the shell, and a sealing cover is slidably connected to the inner side of the sliding groove.

[0017] Preferably, a protective sleeve is fixedly connected to the outer surface of the front end of the shell, a heat dissipation fin one is fixedly connected to the outer surface of the upper end of the shell, a through groove is arranged on the outer surface of the upper end of the heat dissipation fin one, the through groove has a V-shaped structure, and heat dissipation fins two are fixedly connected to the outer surface of the left and right ends of the shell.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. The present application sets up an extrusion assembly, which can stably clamp the wire nose through the cooperation of the extrusion plate and the pressing plate. The elastic force received by the extrusion plate is transmitted to the nut through the wire nose and the pressing plate. The nut can effectively reduce the probability of accidental loosening under the action of the elastic force, thereby reducing the failure rate of the switching power supply and effectively improving the connection stability and safety of the power cord and the switching power supply, so as to be applied to the switching power supply of gateway communication, industrial automation and other equipment.

[0020] 2. The present application sets up an anti-dropping assembly, which can effectively increase the friction between the screw rod and the wire nose by tightly abutting the contact plate and the inner side of the wire nose, thereby making the contact between the wire nose and the screw rod more firm and helping to reduce the probability of accidental loosening between the wire nose and the screw rod, so as to reduce the probability of poor contact between the wire nose and the screw rod.

[0021] 3. The present application sets up a clamping assembly, which can improve the insulation effect of the wire sleeve and the power cord connection by driving the extrusion sleeve to cover the wire sleeve 27 and the power cord connection, thereby improving the safety of the switching power supply during use. When the power cord is accidentally pulled, the movable seat cooperates with the extrusion sleeve to keep the wire sleeve and the power cord stable, which not only reduces the risk of the power cord falling off from the wire sleeve, but also effectively improves the installation stability of the power cord. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0023] Figure 1 It is a perspective structural schematic diagram of the switching power supply with wire protection of the present application.

[0024] Figure 2 Fig. 1 is a top view of a switch power supply with wire protection according to the present application;

[0025] Figure 3 Fig. 2 is a sectional view along A-A direction in Fig. 1; Figure 2

[0026] Fig. 3 is a sectional view along B-B direction in Fig. 1; Figure 4 Figure 2 Fig. 4 is a sectional view along C direction in Fig. 1;

[0027] Figure 5 Fig. 5 is a sectional view along D direction in Fig. 1;

[0028] Fig. 6 is a sectional view along E direction in Fig. 1; Figure 6 Figure 5 Fig. 7 is a sectional view along F direction in Fig. 1.

[0029] Figure 7 Fig. 8 is a sectional view along G direction in Fig. 1. Figure 3

[0030] Fig. 9 is a sectional view along H direction in Fig. 1. Figure 8 Figure 4 Fig. 10 is a sectional view along I direction in Fig. 1.

[0031] Figure 9 Fig. 11 is a sectional view along J direction in Fig. 1. Figure 8 Fig. 12 is a sectional view along K direction in Fig. 1.

[0032]

[0033] 11, housing; 12, connecting groove; 13, mounting hole; 14, fin one; 15, through groove; 16, protective sleeve; 17, fin two; 18, sliding groove; 19, sealing cover; 20, notch; 21, mounting groove; 22, extrusion plate; 23, wire nose; 24, pressing plate; 25, nut; 26, screw rod; 27, wire sleeve; 28, movable seat; 29, extrusion sleeve; 30, anti-skid groove; 31, power cord; 32, displacement groove; 33, sliding seat; 34, traction strip; 35, adjusting rod; 36, storage groove; 37, elastic plate; 38, capsule one; 39, conduit one; 40, push plate; 41, conduit two; 42, limiting groove; 43, capsule two; 44, contact plate; 45, pressure fracture. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Please refer to​​​Figures 1 to 9 The application provides a technical scheme:

[0036] The utility model provides a switch power supply with wiring protection, including the casing 11, the casing 11 upper end outer surface is seted up with the installation slot 21, the installation slot 21 inner surface downside fixedly connected with screw rod 26, the screw rod 26 outside is equipped with the line nose 23, the screw rod 26 outer surface is connected with the nut 25, and the installation slot 21 downside is provided with extrusion subassembly,

[0037] The extrusion subassembly includes the receiving groove 36 set up in the casing 11 inner side, the receiving groove 36 inner surface is fixedly connected with the elastic plate 37, the installation slot 21 inner surface is connected with the extrusion plate 22 slidingly, the extrusion plate 22 lower end outer surface is fixedly connected with the push plate 40, and the push plate 40 lower end penetrates to the inside of receiving groove 36 and is in sliding contact with the elastic plate 37 upper end outer surface.

[0038] The elastic plate 37 outer surface is inclined, the extrusion plate 22 is located the line nose 23 downside, the nut 25 and the line nose 23 between are equipped with the pressing plate 24, the elastic plate 37 outer surface is seted up with the pressure fracture 45, the pressure fracture 45 number is several groups and is annular array distribution, the push plate 40 is circular arc shape, the line nose 23 rear end is fixedly connected with the wire sleeve 27, and the line nose 23 is connected with the power cord 31 through the wire sleeve 27.

[0039] By adopting the above technical scheme, when the switching power supply is connected with the power line 31, one end of the power line 31 is placed inside the wire sleeve 27 during work, and then the wire sleeve 27 is extruded by the wire clamp, so that the wire sleeve 27 is clamped to the outside of the power line 31, and then the wire nose 23 at the front end of the wire sleeve 27 is placed outside the screw rod 26, the screw rod 26 can limit the wire nose 23, thereby reducing the probability of accidental falling of the wire nose 23, the shell 11 is fixed and supported by the mounting groove 21, and the screw rod 26 is electrically connected with the power control device inside the shell 11, when the wire nose 23 and the screw rod 26 are accidentally loosened, the contact between the screw rod 26 and the wire nose 23 will be poor, thereby increasing the probability of failure of the switching power supply during work, and therefore the extrusion assembly is provided, during work, the pressing plate 24 is placed on the upper side of the wire nose 23, and then the operator twists the nut 25 by the insulating wrench, the pressing plate 24 is pushed downward by the nut 25, the wire nose 23 is pressed on the outer surface of the extrusion plate 22 by the pressing plate 24, the wire nose 23 and the screw rod 26 are arranged inside the mounting groove 21, and the mounting groove 21 can protect the wire nose 23 to a certain extent, and then the nut 25 is continuously twisted, the nut 25 moves downward by a distance, the push plate 40 moves synchronously with the extrusion plate 22 during movement, the lower end of the push plate 40 penetrates into the storage groove 36, and the push plate 40 slides in contact with the outer surface of the elastic plate 37 during downward movement, at this time, the push plate 40 pushes the elastic plate 37 to produce a certain amplitude of elastic deformation, the pressure cracks 45 on the surface of the elastic plate 37 can make the elastic plate 37 gather and deform, and the elastic plate 37 applies a certain upward thrust to the push plate 40 under the action of its own elasticity, at this time, the thrust is transmitted to the extrusion plate 22 through the push plate 40, and the wire nose 23 is stably clamped by the extrusion plate 22 cooperating with the pressing plate 24, the elastic force received by the extrusion plate 22 is transmitted to the nut 25 through the wire nose 23 and the pressing plate 24, and the nut 25 can effectively reduce the probability of accidental loosening under the action of the elastic force, thereby effectively improving the connection stability and safety of the power line 31 and the switching power supply.

[0040] Specifically, as shown in Figure 4 , Figure 8 and Figure 9 , the storage groove 36 is provided with a anti-dropping assembly, the anti-dropping assembly comprises a capsule one 38 fixedly connected with the inner surface of the storage groove 36, the upper end of the capsule one 38 is in contact with the lower surface of the elastic plate 37, and the inside of the shell 11 is embeddedly and fixedly connected with a conduit one 39 and a conduit two 41, and the two ends of the conduit one 39 are in communication with the inside of the capsule one 38.

[0041] The lower end of the second conduit 41 is connected with the inside of the first conduit 39, the second conduit 41 penetrates to the inside of the screw 26, the outer surface of the screw 26 is embedded with a limiting groove 42, the inner surface of the limiting groove 42 is fixedly connected with a capsule 43, the side, away from the screw 26, of the capsule 43 is fixedly connected with a contact plate 44, and the upper and lower ends of the contact plate 44 are slidably connected with the inner surface of the limiting groove 42.

[0042] The outer surface of the contact plate 44 is in contact with the inside of the wire nose 23, the capsule 38, the capsule 43 and the limiting groove 42 are all circular, the number of the contact plates 44 is several groups and they are arranged in a ring array, the contact plate 44 is circular arc-shaped and is made of conductive material, and the second conduit 41 is T-shaped and is connected with the inside of the capsule 43.

[0043] When the elastic plate 37 is elastically deformed downward under the pushing force of the push plate 40, the elastic plate 37 will extrude the capsule 38 below, at this time, the volume of the capsule 38 becomes smaller, the gas in the capsule 38 will enter the inside of the first conduit 39 under the pressure, the screw 26 is fixedly installed on the capsule 43 through the limiting groove 42, the gas enters the inside of the capsule 43 through the first conduit 39 and the second conduit 41, at this time, the capsule 43 will be inflated, the contact plate 44 will move away from the screw 26 through the capsule 43, with the continuous increase of the volume of the capsule 43, the several groups of contact plates 44 arranged in a ring array will be closely attached to the inside of the wire nose 23, so as to effectively increase the friction between the screw 26 and the wire nose 23, and then the contact between the wire nose 23 and the screw 26 is more firm, which helps to reduce the probability of accidental loosening between the wire nose 23 and the screw 26, so as to reduce the probability of poor contact between the wire nose 23 and the screw 26, when the wire nose 23 is removed, the nut 25 is taken out from the surface of the screw 26, at this time, the elastic plate 37 reversely moves and resets under the elastic force of itself, the elastic plate 37 will pull the capsule 38 to make the capsule 38 reset, at this time, the gas in the capsule 43 enters the inside of the capsule 38 through the second conduit 41 and the first conduit 39, with the gradual contraction of the volume of the capsule 38, the capsule 38 will drive the contact plate 44 to contract into the limiting groove 42, so as to make the contact plate 44 separate from the wire nose 23, and then the friction between the screw 26 and the wire nose 23 is reduced, which helps to reduce the difficulty of taking out the wire nose 23 from the screw 26.

[0044] Specifically, as Figure 3 , Figure 6 and Figure 7As shown, the power cord 31 outside is provided with clamping assembly, the clamping assembly includes opening in the shell 11 outer surface displacement slot 32, the displacement slot 32 inside slide connection has slide 33, the slide 33 upper end outer surface fixedly connected with movable seat 28, the movable seat 28 the number is two groups and symmetrically distributed in power cord 31 both sides.

[0045] The inner side of the movable seat 28 is a U-shaped structure, the inner surface of the movable seat 28 is fixedly connected with the extrusion sleeve 29, the outer surface of the extrusion sleeve 29 is in contact with the outer side of the power cord 31, the extrusion sleeve 29 is made of elastic insulation material, the outer surface of the extrusion sleeve 29 is provided with anti-skid groove 30, the number of anti-skid groove 30 is several groups and equidistantly distributed on the outer surface of the extrusion sleeve 29.

[0046] The outer surface of the shell 11 rear end is provided with slot 20, the slot 20 is located below the displacement slot 32, two groups of slide 33 are fixedly connected with traction strip 34, the traction strip 34 is made of flexible material, the outer surface of the traction strip 34 is rotatably connected with adjusting rod 35, the lower end of the adjusting rod 35 penetrates into the slot 20 and is screw connected with the shell 11, the upper end of the adjusting rod 35 is fixedly connected with the baffle disc.

[0047] By adopting the above technical scheme, in order to reduce the probability of the power line 31 falling off when being accidentally pulled, the clamping assembly is arranged, the wire nose 23 is sleeved on the surface of the screw rod 26 and installed in place, the operator twists the adjusting rod 35 in the slot 20, the adjusting rod 35 is connected with the slot 20 and the displacement groove 32 through the threaded connection of the shell 11, and moves downward along the axis direction in the process of rotating, the adjusting rod 35 pulls the traction strip 34 downward in the process of moving, the stop disc on the surface of the adjusting rod 35 can play a certain limiting role, so as to reduce the probability of the adjusting rod 35 accidentally falling off from the surface of the traction strip 34, the traction strip 34 is made of flexible material and can pull the two groups of sliding blocks 33, so that the sliding blocks 33 move towards each other in the displacement groove 32, the sliding blocks 33 drive the movable seat 28 to move synchronously in the process of moving, the two groups of movable seats 28 drive the extrusion sleeve 29 to cover the connection between the wire sleeve 27 and the power line 31, the extrusion sleeve 29 is made of insulating material and can improve the insulation effect of the connection between the wire sleeve 27 and the power line 31, so as to improve the safety of the switching power supply in use, the extrusion sleeve 29 is made of elastic material and can tightly cover the outside of the wire sleeve 27, so as to play a certain clamping and limiting role on the wire sleeve 27 through the movable seat 28 driving the extrusion sleeve 29, the anti-skid groove 30 on the surface of the extrusion sleeve 29 can effectively increase the friction between the extrusion sleeve 29 and the wire sleeve 27, so that the clamping between the extrusion sleeve 29 and the wire sleeve 27 is more closely, the clamping assembly is arranged to clamp and fix the connection between the wire sleeve 27 and the power supply, when the power line 31 is accidentally pulled, the movable seat 28 cooperates with the extrusion sleeve 29 to keep the wire sleeve 27 and the power line 31 stable, which not only can reduce the risk of the power line 31 falling off from the wire sleeve 27, but also can effectively improve the installation stability of the power line 31.

[0048] Specifically, as shown in Figure 1 With Figure 2 As shown, the upper end outer surface of the shell 11 is provided with a connecting groove 12, the inner surface of the connecting groove 12 is provided with a mounting hole 13 penetrating through the lower end, the upper end outer surface of the shell 11 is provided with a sliding groove 18, the inner side of the sliding groove 18 is slidingly connected with a sealing cover 19, the sealing cover 19 is in L-shaped structure, and the sealing cover 19 is made of transparent insulating material.

[0049] By adopting the above technical scheme, the connecting groove 12 on the surface of the shell 11 cooperates with the mounting hole 13 to fix and install the switching power supply, the sliding groove 18 on the surface of the shell 11 is used for slidingly supporting the sealing cover 19, the sealing cover 19 can play a certain shielding effect, which not only can reduce the entry of dust and other foreign matters into the storage groove 36, but also can reduce the risk of accidental electric shock of the switching power supply in use to a certain extent, so as to further improve the safety of the switching power supply in use.

[0050] Specifically, as shown inFigure 1 As shown, the outer surface of the front end of the shell 11 is fixedly connected with a protective sleeve 16, the outer surface of the upper end of the shell 11 is fixedly connected with a heat sink 14, the outer surface of the upper end of the heat sink 14 is provided with a through slot 15, the through slot 15 is in a V-shaped structure, and the outer surfaces of the left and right ends of the shell 11 are fixedly connected with heat sinks 17.

[0051] By adopting the above technical scheme, the power cord 31 extends to the inside of the shell 11 through the protective sleeve 16 on the front side of the shell 11, the protective sleeve 16 can not only play a protective role on the power cord 31, but also improve the sealing between the power cord 31 and the shell 11, the protective sleeve 16 sleeved on the outside of the power cord 31 can reduce the risk of bending and breaking of the power cord 31 near the shell 11, the heat sink 14 and the heat sink 17 on the surface of the shell 11 can effectively increase the contact area with the air, thereby effectively improving the heat dissipation effect of the switching power supply, the V-shaped through slot 15 on the surface of the heat sink 14 can facilitate the flow of air between adjacent heat sinks 14, and the flow of air between the heat sinks 14 can further improve the heat dissipation efficiency, which helps to maintain the working temperature inside the shell 11 within a proper range, thereby further improving the stability and safety of the switching power supply during operation.

[0052] Working principle: when working, one end of the power cord 31 is placed inside the wire sleeve 27, and then the wire sleeve 27 is extruded by the wire clamp, so that the wire sleeve 27 is clamped to the outside of the power cord 31, and then the wire nose 23 at the front end of the wire sleeve 27 is placed outside the screw rod 26, the wire nose 23 is pressed on the outer surface of the extrusion plate 22 by the pressing plate 24, the elastic plate 37 will exert a certain upward thrust on the push plate 40 under the action of its own elasticity, the wire nose 23 can be stably clamped by the extrusion plate 22 cooperating with the pressing plate 24, the elastic force received by the extrusion plate 22 is transmitted to the nut 25 through the wire nose 23 and the pressing plate 24, the nut 25 can effectively reduce the probability of accidental loosening under the action of the elastic force, the elastic plate 37 will extrude the capsule 38 below it, the gas in the capsule 38 enters the capsule 43 inside in turn through the conduit 39 and the conduit 41, the capsule 43 drives the contact plate 44 to tightly contact the inside of the wire nose 23, thereby effectively increasing the friction between the screw rod 26 and the wire nose 23, and further making the contact between the wire nose 23 and the screw rod 26 more firm, the sliding seat 33 will drive the movable seat 28 to move synchronously in the process of movement, the extrusion sleeve 29 is covered on the connection between the wire sleeve 27 and the power cord 31 by the two groups of movable seats 28, the wire sleeve 27 is clamped and limited by the extrusion sleeve 29 driven by the movable seat 28, so that the clamping between the extrusion sleeve 29 and the wire sleeve 27 is more tight, the heat sink 14 and the heat sink 17 on the surface of the shell 11 can effectively increase the contact area with the air, thereby effectively improving the heat dissipation effect of the switching power supply.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A switching power supply with wiring protection, characterized by: Including the shell (11), the shell (11) upper end outer surface is equipped with the installation groove (21), the installation groove (21) inner surface lower side is fixedly connected with screw rod (26), the screw rod (26) outside is equipped with the line nose (23), the screw rod (26) outer surface is threadedly connected with nut (25), the installation groove (21) lower side is provided with extrusion assembly; The extrusion assembly includes a receiving groove (36) formed in the inner side of the shell (11), the receiving groove (36) is fixedly connected with the elastic plate (37) on the inner surface, the inner surface of the installation groove (21) is slidably connected with the extrusion plate (22), the lower end of the extrusion plate (22) is fixedly connected with the push plate (40), the push plate (40) penetrates into the inside of the receiving groove (36) and is in sliding contact with the outer surface of the upper end of the elastic plate (37). The outer surface of the elastic plate (37) is inclined, the extrusion plate (22) is located below the line nose (23), the nut (25) and the line nose (23) are sleeved with a pressing plate (24), the outer surface of the elastic plate (37) is provided with a pressure fracture (45), the number of the pressure fracture (45) is several groups and is arranged in a ring array, the push plate (40) is arc-shaped, the rear end of the line nose (23) is fixedly connected with a wire sleeve (27), and the line nose (23) is press-fitted with the power cord (31) through the wire sleeve (27).

2. A switching power supply with wire protection according to claim 1, characterized in that: The inside of the receiving groove (36) is provided with an anti-dropping assembly, the anti-dropping assembly includes a capsule (38) fixedly connected with the lower end of the inner surface of the receiving groove (36), the upper end of the capsule (38) is in contact with the lower surface of the elastic plate (37), and the inner side of the shell (11) is embeddedly fixedly connected with a conduit (39) and a conduit (41).

3. A switching power supply with wiring protection according to claim 2, characterized in that: The lower end of the conduit (41) is in communication with the inside of the conduit (39), the conduit (41) penetrates into the inside of the screw rod (26), the outer surface of the screw rod (26) is embeddedly provided with a limiting groove (42), the inner surface of the limiting groove (42) is fixedly connected with a capsule (43), the capsule (43) is fixedly connected with a contact plate (44) away from one side of the screw rod (26), and the upper and lower ends of the contact plate (44) are slidably connected with the inner surface of the limiting groove (42).

4. A switching power supply with wire protection according to claim 3, characterized in that: The outer surface of the contact plate (44) is in contact with the inner side of the line nose (23), the capsule (38), the capsule (43) and the limiting groove (42) are all circular, the number of the contact plate (44) is several groups and is arranged in a ring array, the contact plate (44) is arc-shaped and is made of conductive material, the conduit (41) is T-shaped and is in communication with the inside of the capsule (43).

5. The switching power supply with wiring protection according to claim 1, characterized in that: The power line (31) is provided with a clamping assembly outside, the clamping assembly comprises a displacement slot (32) opened in the outer surface of the shell (11), the sliding seat (33) is slidably connected inside the displacement slot (32), the movable seat (28) is fixedly connected to the outer surface of the upper end of the sliding seat (33), the number of the movable seat (28) is two groups and is symmetrically distributed on both sides of the power line (31).

6. A switching power supply with wiring protection according to claim 5, characterized in that: The movable seat (28) is in U-shaped structure inside, the extrusion sleeve (29) is fixedly connected to the inner surface of the movable seat (28), the outer surface of the extrusion sleeve (29) is in contact with the outside of the power line (31), the extrusion sleeve (29) is made of elastic insulating material, the anti-skid groove (30) is opened in the outer surface of the extrusion sleeve (29), the number of the anti-skid groove (30) is several groups and is equidistantly distributed on the outer surface of the extrusion sleeve (29).

7. A switching power supply with wiring protection according to claim 5, characterized in that: The notch (20) is opened in the outer surface of the rear end of the shell (11), the notch (20) is located below the displacement slot (32), the traction strip (34) is fixedly connected between the two groups of sliding seats (33), the traction strip (34) is made of flexible material, the adjusting rod (35) is rotatably connected to the outer surface of the traction strip (34), the lower end of the adjusting rod (35) penetrates into the inside of the notch (20) and is threadedly connected with the shell (11), the adjusting rod (35) is fixedly connected with the baffle disc.

8. A switching power supply with wiring protection according to claim 7, characterized in that: The connecting groove (12) is opened in the outer surface of the upper end of the shell (11), the mounting hole (13) is opened in the inner surface of the lower end of the connecting groove (12), the sliding groove (18) is opened in the outer surface of the upper end of the shell (11), the sealing cover (19) is slidably connected inside the sliding groove (18), the sealing cover (19) is in L-shaped structure, the sealing cover (19) is made of transparent insulating material.

9. A switching power supply with line protection according to any one of claims 1 to 8, characterized in that: The protective sleeve (16) is fixedly connected to the outer surface of the front end of the shell (11), the heat dissipation fin one (14) is fixedly connected to the outer surface of the upper end of the shell (11), the through groove (15) is opened in the outer surface of the upper end of the heat dissipation fin one (14), the through groove (15) is in V-shaped structure, the heat dissipation fin two (17) is fixedly connected to the outer surface of the left and right ends of the shell (11).

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