Switching power supply with wiring protection

Abstract

The invention 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 sleeves the outer side of the screw rod, a nut is in threaded connection with the outer surface of the screw rod, and an extrusion assembly is arranged on the lower side of the mounting groove. The extrusion assembly comprises a storage groove formed in the inner side of the shell, an elastic plate is fixedly connected to the inner surface of the storage groove, and an extrusion plate is slidably connected to the inner surface of the mounting groove. The extrusion assembly is arranged, an extrusion plate is matched with a pressing plate to stably clamp a cable lug, elastic force borne by the extrusion plate can be transmitted to a nut through the cable lug and the pressing plate, and the nut can effectively reduce the probability of accidental loosening under the action of the elastic force; the failure rate of the switching power supply is reduced, and the connection stability and safety of the power line and the switching power supply can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and in particular to a switching power supply with wiring protection. Background Art

[0002] A switching power supply is a power supply device that achieves electrical energy conversion through high-frequency switching technology. Its main functions are AC to DC conversion, high-frequency inversion, and transformer coupling. Due to its high efficiency, miniaturization, and lightweight characteristics, it is widely used in various electronic equipment such as industrial automation, electronic communications, medical equipment, and automotive electronics.

[0003] When in use, a switching power supply needs to be electrically connected to a power line. In the prior art, a nut is usually used to press the power line to connect. For example, Chinese patent application No. CN222107037U discloses a switching power supply that is easy to connect. The movable block drives the retaining block to slide, so that the retaining block fits with the connecting line to fix the connecting line. The locking block slides into one of the slots to engage and limit the plate and the rod body, thereby improving the practicality of the switching power supply.

[0004] Some switching power supplies used in automotive electronics (such as in-vehicle gateway devices) are usually installed inside cars. During long periods of driving, cars will generate vibrations of a certain frequency due to bumps. When using existing switching power supply wiring methods, the movable blocks and rods may become loose due to long-term vibration, which may lead to poor contact between the transmission 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 of the Invention

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

[0006] To achieve the above object, the present invention provides the following technical solutions: A switching power supply with wiring protection includes a housing, a mounting groove is formed on the outer surface of the upper end of the housing, a screw is fixedly connected to the lower side of the inner surface of the mounting groove, a wire nose is sleeved on the outer side of the screw, a nut is threadedly connected to the outer surface of the screw, and an extrusion assembly is provided on the lower side of the mounting groove; The extrusion assembly includes a receiving groove opened on 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 mounting groove, 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 passes through the interior of the receiving groove and is in sliding contact with the outer surface of the upper end of the elastic plate.

[0007] Preferably, the outer surface of the elastic plate is inclined, the extrusion plate is located at the lower side of the wire nose, a pressure plate is provided between the nut and the wire nose, and compression cracks are provided on the outer surface of the elastic plate. The number of the compression cracks is several groups and distributed in a ring array. The push plate is arc-shaped, and the rear end of the wire nose is fixedly connected to a wire sleeve, and the wire nose is connected to the power cord through the wire sleeve press fit.

[0008] Preferably, an anti-slip component is provided inside the storage groove, and the anti-slip component includes a capsule body 1 fixedly connected to the lower end of the inner surface of the storage groove, the outer surface of the upper end of the capsule body 1 is in contact with the lower surface of the elastic plate, and a conduit 1 and a conduit 2 are embedded and fixedly connected on the inner side of the shell, and both ends of the conduit 1 are connected to the interior of the capsule body 1.

[0009] Preferably, the lower end of the second conduit is connected to the inside of the first conduit, the second conduit passes through the inner side of the screw, a limiting groove is embedded on the outer surface of the screw, the inner surface of the limiting groove is fixedly connected to the second capsule, the side of the second capsule away from the screw is fixedly connected to a contact plate, and the upper and lower ends of the contact plate are slidably connected to the inner surface of the limiting groove.

[0010] Preferably, the outer surface of the contact plate contacts the inner side of the wire nose, the capsule one, capsule two and the limiting groove are all annular, the number of the contact plates is several groups and distributed in a ring array, the contact plate is arc-shaped and made of conductive material, and the catheter two is T-shaped and connected to the inside of the capsule two.

[0011] Preferably, a clamping assembly is provided on the outside of the power cord, and the clamping assembly includes a displacement groove opened on the outer surface of the shell, a sliding seat is slidably connected to the inner side of the displacement groove, and a movable seat is fixedly connected to the outer surface of the upper end of the sliding seat. The number of the movable seats is two groups and they are symmetrically distributed on both sides of the power cord.

[0012] Preferably, the inner side of the movable seat is U-shaped, the inner surface of the movable seat is fixedly connected to an extrusion sleeve, the outer surface of the extrusion sleeve is in contact with the outside of the power cord, the extrusion sleeve is made of elastic insulating material, and the outer surface of the extrusion sleeve is provided with anti-slip grooves, and the number of the anti-slip grooves is several groups and is equidistantly distributed on the outer surface of the extrusion sleeve.

[0013] Preferably, a notch is provided on the outer surface of the rear end of the shell, and the notch is located on the lower side of the displacement groove. A traction bar is fixedly connected between the two groups of slides, and the traction bar is made of flexible material. An adjustment rod is rotatably connected to the outer surface of the traction bar, and the lower end of the adjustment rod passes through the inside of the notch and is threadedly connected to the shell, and the upper end of the adjustment rod is fixedly connected to a baffle.

[0014] Preferably, a connecting groove is provided on the outer surface of the upper end of the shell, a mounting hole is provided through the lower end of the inner surface of the connecting groove, a sliding groove is provided on the outer surface of the upper end of the shell, a sealing cover is slidably connected to the inner side of the sliding groove, the sealing cover is an L-shaped structure, and the sealing cover is made of transparent insulating material.

[0015] Preferably, a protective cover is fixedly connected to the outer surface of the front end of the shell, a heat sink 1 is fixedly connected to the outer surface of the upper end of the shell, a through groove is opened through the outer surface of the upper end of the heat sink 1, and the through groove is a V-shaped structure, and heat sink 2 is fixedly connected to the left and right ends of the outer surface of the shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an extrusion assembly, which can stably clamp the wire lug through an extrusion plate and a pressure plate. The elastic force exerted on the extrusion plate is transmitted to the nut through the wire lug and the pressure plate. Under the action of the elastic force, the nut can effectively reduce the probability of accidental loosening. While reducing the failure rate of the switching power supply, it can also effectively improve the stability and safety of the connection between the power cord and the switching power supply. Therefore, it is applicable to the switching power supply of gateway communication, industrial automation equipment and other equipment. 2. The present invention provides an anti-slip assembly, which can effectively increase the friction between the screw and the wire nose by tightly fitting the contact plate with the inner side of the wire nose, thereby making the contact between the wire nose and the screw more firm, helping to reduce the chance of accidental loosening between the wire nose and the screw, thereby reducing the chance of poor contact between the wire nose and the screw; 3. The present invention is provided with a clamping assembly, which drives the extrusion sleeve to cover the connection between the wire sleeve 27 and the power cord through two sets of movable seats, which can improve the insulation effect of the connection between the wire sleeve and the power cord, 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 THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a switching power supply with wiring protection according to the present invention; Figure 2 This is a schematic top view of the structure of a switching power supply with wiring protection according to the present invention; Figure 3 for Figure 2 Cross-sectional view along the AA axis; Figure 4 for Figure 2 Cross-sectional view along the BB direction; Figure 5 This is a schematic diagram of the structure inside a protective cover of a switching power supply with wiring protection according to the present invention; Figure 6 for Figure 5 The enlarged schematic diagram of point C in the middle; Figure 7 for Figure 3 The enlarged schematic diagram of point D in the middle; Figure 8 for Figure 4 The enlarged schematic diagram of point E in the middle; Figure 9 for Figure 8 Enlarged schematic diagram of point F in the middle.

[0019] Description of reference numerals: 11. Shell; 12. Connecting groove; 13. Mounting hole; 14. Heat sink 1; 15. Through groove; 16. Protective cover; 17. Heat sink 2; 18. Slide groove; 19. Sealing cover; 20. Notch; 21. Mounting groove; 22. Extrusion plate; 23. Wire nose; 24. Pressing plate; 25. Nut; 26. Screw; 27. Wire sleeve; 28. Movable seat; 29. ​​Extrusion sleeve; 30. Anti-slip groove; 31. Power cord; 32. Displacement groove; 33. Slide seat; 34. Pulling bar; 35. Adjusting rod; 36. Storage groove; 37. Elastic plate; 38. Capsule 1; 39. Conduit 1; 40. Push plate; 41. Conduit 2; 42. Limiting groove; 43. Capsule 2; 44. Contact plate; 45. Compression crack. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 9 , the present invention provides a technical solution: A switching power supply with wiring protection includes a housing 11. A mounting groove 21 is formed on the outer surface of the upper end of the housing 11. A screw 26 is fixedly connected to the lower side of the inner surface of the mounting groove 21. A wire nose 23 is sleeved on the outer side of the screw 26. A nut 25 is threadedly connected to the outer surface of the screw 26. An extrusion assembly is provided on the lower side of the mounting groove 21. The extrusion assembly includes a receiving groove 36 opened on the inner side of the shell 11, and the inner surface of the receiving groove 36 is fixedly connected to an elastic plate 37, the inner surface of the mounting groove 21 is slidably connected to the extrusion plate 22, and the outer surface of the lower end of the extrusion plate 22 is fixedly connected to the push plate 40, and the lower end of the push plate 40 passes through the interior of the receiving groove 36 and is in sliding contact with the outer surface of the upper end of the elastic plate 37.

[0022] The outer surface of the elastic plate 37 is inclined, the extrusion plate 22 is located at the lower side of the wire nose 23, a pressure plate 24 is sleeved between the nut 25 and the wire nose 23, and a compression crack 45 is opened on the outer surface of the elastic plate 37. The number of the compression cracks 45 is several groups and distributed in a ring array. The push plate 40 is arc-shaped. The rear end of the wire nose 23 is fixedly connected to the wire sleeve 27, and the wire nose 23 is pressed and connected to the power cord 31 through the wire sleeve 27.

[0023] By adopting the above technical solution, when the switching power supply is installed and connected to the power cord 31, one end of the power cord 31 is placed inside the wire sleeve 27 during operation, and then the wire sleeve 27 is squeezed by the wire crimping pliers, so that the wire sleeve 27 is engaged with the outside of the power cord 31, and then the wire nose 23 at the front end of the wire sleeve 27 is placed on the outside of the screw 26. The screw 26 can limit the wire nose 23, thereby reducing the chance of the wire nose 23 accidentally slipping off. The housing 11 fixes and supports the screw 26 through the mounting groove 21, and the screw 26 and the housing 11 are fixed. The internal power control device is electrically connected. When the wire nose 23 and the screw 26 are accidentally loosened, the contact between the screw 26 and the wire nose 23 will be poor, which will increase the probability of failure during the operation of the switching power supply. For this purpose, an extrusion component is set. When working, the pressure plate 24 is placed on the upper side of the wire nose 23. Then the operator tightens the nut 25 with an insulating wrench, pushes the pressure plate 24 downward through the nut 25, and presses the wire nose 23 on the outer surface of the extrusion plate 22 through the pressure plate 24. The wire nose 23 and the screw 26 are set in the installation position. The inside of the groove 21 can play a certain protective role for the wire nose 23 through the installation groove 21, and then as the nut 25 continues to be screwed, the nut 25 will drive the extrusion plate 22 to move downward for a distance, and the extrusion plate 22 will drive the push plate 40 to move synchronously during the movement. The lower end of the push plate 40 penetrates into the inside of the receiving groove 36 and will slide in contact with the outer surface of the elastic plate 37 during the downward movement. At this time, the push plate 40 will push the elastic plate 37 to produce a certain degree of elastic deformation, and the compression crack 45 on the surface of the elastic plate 37 can make the elastic plate 37 deform. The plate 37 can be deformed to gather together, and the elastic plate 37 will apply a certain upward thrust to the push plate 40 under the action of its own elastic force. At this time, the thrust is transmitted to the extrusion plate 22 through the push plate 40. The extrusion plate 22 cooperates with the pressure plate 24 to stably clamp the wire nose 23. The elastic force exerted on the extrusion plate 22 will be transmitted to the nut 25 through the wire nose 23 and the pressure plate 24. Under the action of the elastic force, the nut 25 can effectively reduce the chance of accidental loosening, thereby effectively improving the stability and safety of the connection between the power cord 31 and the switching power supply.

[0024] Specifically, such as Figure 4 、 Figure 8 and Figure 9 As shown, an anti-slip component is provided inside the receiving groove 36, and the anti-slip component includes a capsule 38 fixedly connected to the lower end of the inner surface of the receiving groove 36, and the outer surface of the upper end of the capsule 38 is in contact with the lower surface of the elastic plate 37. A conduit 1 39 and a conduit 2 41 are embedded and fixedly connected on the inner side of the shell 11, and both ends of the conduit 1 39 are connected to the interior of the capsule 1 38.

[0025] The lower end of the second conduit 41 is connected to the interior of the first conduit 39, and the second conduit 41 passes through the inner side of the screw 26. A limiting groove 42 is embedded on the outer surface of the screw 26. The inner surface of the limiting groove 42 is fixedly connected to the second capsule 43. The side of the second capsule 43 away from the screw 26 is fixedly connected to a contact plate 44. The upper and lower ends of the contact plate 44 are slidably connected to the inner surface of the limiting groove 42.

[0026] The outer surface of the contact plate 44 contacts the inner side of the wire nose 23. The capsule 1 38, the capsule 2 43 and the limiting groove 42 are all annular. The number of the contact plates 44 is several groups and distributed in an annular array. The contact plates 44 are arc-shaped and made of conductive material. The conduit 2 41 is T-shaped and connected to the inside of the capsule 2 43.

[0027] By adopting the above technical solution, when the elastic plate 37 is elastically deformed downward under the thrust of the push plate 40, the elastic plate 37 will squeeze the bladder 1 38 on its lower side. At this time, the volume of the bladder 1 38 becomes smaller, and the gas inside it will enter the inside of the conduit 1 39 under the action of pressure. The screw 26 fixes the bladder 2 43 through the limiting groove 42, and the gas enters the inside of the bladder 2 43 through the conduit 1 39 and the conduit 2 41 in turn. At this time, the bladder 2 43 will be inflated and expand, and the contact plate 44 will be driven to move to the side away from the screw 26 through the bladder 2 43. As the volume of the bladder 2 43 continues to increase, several groups of contact plates 44 distributed in an annular array will fit tightly with the inner side of the wire nose 23, thereby effectively increasing the friction between the screw 26 and the wire nose 23, and thus enabling the wire nose 23 to contact the screw 26. The contact is more firm, which helps to reduce the chance of accidental loosening between the wire nose 23 and the screw 26, thereby reducing the chance of poor contact between the wire nose 23 and the screw 26. When the wire nose 23 is removed, the nut 25 is removed from the surface of the screw 26. At this time, the elastic plate 37 moves in the opposite direction and resets under the action of its own elastic force. The elastic plate 37 will pull the capsule 1 38 to expand and reset the capsule 1 38. At this time, the gas inside the capsule 2 43 enters the capsule 1 38 through the conduit 2 41 and the conduit 1 39. As the volume of the capsule 1 38 gradually shrinks, the capsule 1 38 will drive the contact plate 44 to shrink to the inside of the limiting groove 42, thereby causing the contact plate 44 to disengage from the wire nose 23, thereby reducing the friction between the screw 26 and the wire nose 23, and helping to reduce the difficulty of removing the wire nose 23 from the upper side of the screw 26.

[0028] Specifically, such as Figure 3 、 Figure 6 and Figure 7As shown, a clamping assembly is provided on the outside of the power cord 31, and the clamping assembly includes a displacement groove 32 opened on the outer surface of the shell 11, and a slide 33 is slidably connected to the inner side of the displacement groove 32. The outer surface of the upper end of the slide 33 is fixedly connected to a movable seat 28. The number of the movable seats 28 is two groups and they are symmetrically distributed on both sides of the power cord 31.

[0029] The inner side of the movable seat 28 is U-shaped, and an 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 outer side of the power cord 31. The extrusion sleeve 29 is made of elastic insulating material. The outer surface of the extrusion sleeve 29 is provided with anti-slip grooves 30. The number of the anti-slip grooves 30 is several groups and is equidistantly distributed on the outer surface of the extrusion sleeve 29.

[0030] A notch 20 is provided on the outer surface of the rear end of the shell 11, and the notch 20 is located on the lower side of the displacement groove 32. A traction bar 34 is fixedly connected between the two groups of slides 33. The traction bar 34 is made of flexible material. An adjustment rod 35 is rotatably connected to the outer surface of the traction bar 34. The lower end of the adjustment rod 35 passes through the inside of the notch 20 and is threadedly connected to the shell 11. The upper end of the adjustment rod 35 is fixedly connected to a baffle.

[0031] When the user presses the lever 34 to the left, the lever 34 is moved downwardly along the axis line, and the user presses the lever 34 to the right, so that the user can move the lever 34 downwardly. The outer edge of the cable 27 is provided with a plurality of holes, and the outer edge of the cable 27 is provided with a plurality of holes, and the outer edge of the cable 27 is provided with a plurality of holes, and the plurality of holes are provided with a plurality of holes.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, a connecting groove 12 is provided on the outer surface of the upper end of the shell 11, and a mounting hole 13 is provided at the lower end of the inner surface of the connecting groove 12. A sliding groove 18 is provided on the outer surface of the upper end of the shell 11, and a sealing cover 19 is slidably connected to the inner side of the sliding groove 18. The sealing cover 19 is an L-shaped structure and is made of transparent insulating material.

[0033] By adopting the above technical solution, the connection groove 12 on the surface of the shell 11 cooperates with the mounting hole 13 to fix the switching power supply, and the slide groove 18 on the surface of the shell 11 is used to slide and support the sealing cover 19. The sealing cover 19 can have a certain shielding effect, which can not only reduce the entry of dust and other foreign matter into the storage groove 36, but also reduce the risk of accidental electric shock during the use of the switching power supply to a certain extent, thereby further improving the safety of the switching power supply during use.

[0034] Specifically, such as Figure 1 As shown, a protective cover 16 is fixedly connected to the front outer surface of the shell 11, a heat sink 14 is fixedly connected to the upper outer surface of the shell 11, a through groove 15 is opened through the upper outer surface of the heat sink 14, and the through groove 15 is a V-shaped structure. Heat sink 2 17 is fixedly connected to the left and right ends of the outer surface of the shell 11.

[0035] By adopting the above technical solution, the power cord 31 extends into the interior of the shell 11 through the protective cover 16 on the front side of the shell 11. The protective cover 16 not only protects the power cord 31, but also improves the sealing between the power cord 31 and the shell 11. The protective cover 16 is arranged on the outside of the power cord 31 to reduce the risk of the power cord 31 bending and breaking near the shell 11. The heat sink 14 and the heat sink 2 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 groove 15 on the surface of the heat sink 14 can facilitate the flow of air between adjacent heat sinks 14. By the air flowing between the heat sinks 14, the heat dissipation efficiency can be further improved, which helps to maintain the operating temperature inside the shell 11 within an appropriate range, thereby further improving the stability and safety of the switching power supply during operation.

[0036] Working principle: during operation, one end of the power cord 31 is placed inside the wire sleeve 27, and then the wire sleeve 27 is squeezed by the wire crimping pliers, so that the wire sleeve 27 is engaged with the outside of the power cord 31, and then the wire nose 23 at the front end of the wire sleeve 27 is placed on the outside of the screw 26, and the wire nose 23 is pressed against the outer surface of the squeezing plate 22 by the pressing plate 24. The elastic plate 37 will apply a certain upward thrust to the push plate 40 under the action of its own elastic force, and the wire nose 23 can be stably clamped by the squeezing plate 22 and the pressing plate 24. The elastic force exerted on the squeezing plate 22 will be transmitted to the nut 25 through the wire nose 23 and the pressing plate 24. The nut 25 can effectively reduce the chance of accidental loosening under the action of the elastic force, and the elastic plate 37 will squeeze the capsule 38 on the lower side thereof, and the gas inside the capsule 38 will pass through the guide tube in turn. Tube 1 39 and conduit 2 41 enter the interior of capsule 2 43, and capsule 2 43 pushes the contact plate 44 to fit tightly against the inner side of the wire nose 23, thereby effectively increasing the friction between the screw 26 and the wire nose 23, and thus making the contact between the wire nose 23 and the screw 26 more firm. The slide 33 will drive the movable seat 28 to move synchronously during the movement, and the two groups of movable seats 28 drive the extrusion sleeve 29 to cover the connection between the wire sleeve 27 and the power cord 31, and the movable seat 28 drives the extrusion sleeve 29 to clamp and limit the wire sleeve 27 to a certain extent, so that the extrusion sleeve 29 and the wire sleeve 27 are clamped more tightly, and the heat sink 14 and heat sink 2 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.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A switching power supply with wiring protection, characterized in that: The invention comprises a housing (11), wherein the outer surface of the upper end of the housing (11) is provided with a mounting groove (21), the lower side of the inner surface of the mounting groove (21) is fixedly connected with a screw rod (26), the outer side of the screw rod (26) is provided with a thread nose (23), the outer surface of the screw rod (26) is threadedly connected with a nut (25), and the lower side of the mounting groove (21) is provided with an extrusion assembly; The extrusion assembly includes a receiving groove (36) provided on the inner side of the housing (11), an elastic plate (37) being fixedly connected to the inner surface of the receiving groove (36), an extrusion plate (22) being slidably connected to the inner surface of the mounting groove (21), a push plate (40) being fixedly connected to the outer surface of the lower end of the extrusion plate (22), and a lower end of the push plate (40) passing through the interior of the receiving groove (36) and in sliding contact with the outer surface of the upper end of the elastic plate (37).

2. The switching power supply with wiring protection according to claim 1, characterized in that: The outer surface of the elastic plate (37) is inclined, the extrusion plate (22) is located at the lower side of the wire nose (23), a pressure plate (24) is sleeved between the nut (25) and the wire nose (23), and the outer surface of the elastic plate (37) is provided with pressure cracks (45), the number of the pressure cracks (45) is several groups and distributed in a ring array, the push plate (40) is arc-shaped, the rear end of the wire nose (23) is fixedly connected to the wire sleeve (27), and the wire nose (23) is press-fitted with the power cord (31) through the wire sleeve (27).

3. The switching power supply with wiring protection according to claim 2, characterized in that: An anti-slip component is provided inside the receiving groove (36), and the anti-slip component includes a capsule (38) fixedly connected to the lower end of the inner surface of the receiving groove (36), the outer surface of the upper end of the capsule (38) contacts the lower surface of the elastic plate (37), and a conduit (39) and a conduit (41) are embedded and fixedly connected inside the shell (11), and both ends of the conduit (39) are connected to the inside of the capsule (38).

4. The switching power supply with wiring protection according to claim 3, characterized in that: The lower end of the second conduit (41) is connected to the inside of the first conduit (39), and the second conduit (41) passes through the inner side of the screw (26). A limiting groove (42) is embedded in the outer surface of the screw (26), and the inner surface of the limiting groove (42) is fixedly connected to the second capsule (43). The side of the second capsule (43) away from the screw (26) is fixedly connected to a contact plate (44), and the upper and lower ends of the contact plate (44) are slidably connected to the inner surface of the limiting groove (42).

5. The switching power supply with wiring protection according to claim 4, characterized in that: The outer surface of the contact plate (44) contacts the inner side of the wire nose (23); the capsule 1 (38), the capsule 2 (43) and the limiting groove (42) are all annular; the number of the contact plates (44) is several groups and they are distributed in an annular array; the contact plates (44) are arc-shaped and made of conductive material; the conduit 2 (41) is T-shaped and communicates with the interior of the capsule 2 (43).

6. The switching power supply with wiring protection according to claim 2, characterized in that: A clamping assembly is provided on the outside of the power cord (31), and the clamping assembly includes a displacement groove (32) provided on the outer surface of the housing (11). A slide seat (33) is slidably connected to the inside of the displacement groove (32). A movable seat (28) is fixedly connected to the outer surface of the upper end of the slide seat (33). The movable seats (28) are provided in two groups and are symmetrically distributed on both sides of the power cord (31).

7. The switching power supply with wiring protection according to claim 6, characterized in that: The inner side of the movable seat (28) is in a U-shaped structure. The inner surface of the movable seat (28) is fixedly connected to an extrusion sleeve (29). The outer surface of the extrusion sleeve (29) contacts the outer side of the power cord (31). The extrusion sleeve (29) is made of elastic insulating material. The outer surface of the extrusion sleeve (29) is provided with anti-skid grooves (30). The number of the anti-skid grooves (30) is several groups and is equidistantly distributed on the outer surface of the extrusion sleeve (29).

8. The switching power supply with wiring protection according to claim 1, characterized in that: A notch (20) is formed on the outer surface of the rear end of the housing (11), and the notch (20) is located below the displacement groove (32). A traction bar (34) is fixedly connected between the two groups of slide seats (33), and the traction bar (34) is made of a flexible material. An adjustment rod (35) is rotatably connected to the outer surface of the traction bar (34). The lower end of the adjustment rod (35) passes through the inside of the notch (20) and is threadedly connected to the housing (11). The upper end of the adjustment rod (35) is fixedly connected to a baffle.

9. The switch power supply with wiring protection according to claim 8, characterized in that: The outer surface of the upper end of the shell (11) is provided with a connection groove (12), and the lower end of the inner surface of the connection groove (12) is provided with a mounting hole (13). The outer surface of the upper end of the shell (11) is provided with a slide groove (18), and the inner side of the slide groove (18) is slidably connected to a sealing cover (19), and the sealing cover (19) is in an L-shaped structure and is made of a transparent insulating material.

10. A switching power supply with wiring protection according to any one of claims 1 to 9, characterized in that: A protective sleeve (16) is fixedly connected to the outer surface of the front end of the shell (11), a heat sink 1 (14) is fixedly connected to the outer surface of the upper end of the shell (11), a through groove (15) is formed through the outer surface of the upper end of the heat sink 1 (14), and the through groove (15) is in a V-shaped structure. Heat sink 2 (17) is fixedly connected to the left and right ends of the outer surface of the shell (11).

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