A modular electronic transformer facilitating assembly

Abstract

The present invention relates to the technical field of transformers, and provides a modular electronic transformer that is convenient for assembly, including: a bearing unit, a clamping unit located on the top of the bearing unit, and an electromagnetic unit located on the top of the clamping unit. The bearing unit includes a base, a first magnetic core is fixedly connected to the top of the base, a movable platform is arranged on the top of the first magnetic core, support columns are arranged on the top of the base, a second magnetic core is arranged on the top of the support columns, adjustment grooves are opened at both ends of the second magnetic core, ratchets are arranged in the adjustment grooves, and clamping plates are fixedly connected to the ratchets; through the combined magnetic core, each module of the electronic transformer can be assembled conveniently, and different types of transformer coils can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and more specifically to a modular electronic transformer that is easy to assemble and can simply install different types of transformer coils. Background Art

[0002] An electronic transformer is an electrical energy conversion device that changes the alternating current transmission voltage through electromagnetic induction. By using a primary coil, a secondary coil, and a magnetic core in cooperation, it changes the fixed voltage to the rated voltage required by electrical equipment to meet the usage requirements of various electrical appliances.

[0003] Existing electronic transformers produce and then assemble each module of the transformer separately, generally including a bracket, a coil, a magnetic core, and pins. The primary coil and the secondary coil are coaxially arranged, and the two coils are separated by an insulating layer to improve space utilization and enhance the efficiency of electromagnetic induction.

[0004] However, the winding methods of the coils inside the electronic transformer are diverse. Common coils include layer coils and ring coils. The layer coil is cylindrical. During the long-term operation of the transformer, the coil generates heat during operation, and its insulating layer is prone to damage, thus causing a failure. However, other structures of the transformer are not damaged. In order to save costs, the coil is replaced separately. Separately replacing the coil requires first disconnecting the wiring from the pins and then removing the coil from the bearing unit, and the process is rather cumbersome. Moreover, the existing transformer structure cannot simultaneously adapt to the installation of different types of coils. Insufficient adaptability will result in the need to replace the support structure when replacing the coil, making the assembly process even more cumbersome. Summary of the Invention

[0005] The present invention provides a modular electronic transformer that is easy to assemble. By pressing the second pin, the support column and the second magnetic core can be removed from the first magnetic core. The coil can be installed on the support column, and when installing the ring coil, the opening angle of the clamping plate and the moving distance of the movable platform along the limiting block can be adjusted, so that the transformer can install different types of coils, to solve the problems in the background art that the electronic transformer cannot adapt to the installation of multiple coils and the coil replacement is inconvenient.

[0006] The technical solution of the present invention is as follows:

[0007] A modular electronic transformer that is easy to assemble, comprising: a bearing unit, a clamping unit located on top of the bearing unit, and an electromagnetic unit located on top of the clamping unit. The bearing unit includes a base, a wiring groove is vertically opened at the top of the base, wiring holes are vertically opened at the four corners of the wiring groove, sliding plates are symmetrically arranged in the wiring groove, one side of the sliding plate is fixedly connected with an elastic member I, one end of the elastic member I is fixedly connected with one side of the inner wall of the wiring groove, a pin is fixedly connected in the wiring hole, the pin is in contact with the sliding plate, one end of the pin extends out of the wiring hole, a pressing plate is arranged on top of the sliding plate, the pressing plate is slidably connected with the inner wall of the wiring groove, a limiting strip is fixedly connected to the bottom of the pressing plate, the limiting strip is located between the symmetrically arranged sliding plates, and the limiting strip is in contact with one side of the sliding plate;

[0008] The clamping unit includes limiting components arranged on both sides of the top of the base, a clamping component is arranged on top of the limiting components. The limiting components include a limiting block fixed on one side of the top of the base, sliding grooves are symmetrically and vertically opened on the top of the limiting block, racks are fixedly connected to the inner walls of the sliding grooves, and a magnetic core I is fixedly connected to the limiting block;

[0009] The electromagnetic unit includes a support column arranged on top of the pressing plate, a magnetic core II is arranged on top of the support column, a limiting hole is vertically opened on the top of the support column, docking holes are horizontally opened at both bottom ends of the support column, the docking holes are communicated with the limiting hole, a through hole is vertically opened on the top of the magnetic core II, adjusting grooves are vertically opened at both ends of the top of the magnetic core II, a through groove is horizontally opened on the inner wall of the adjusting groove, and the through groove is communicated with the through hole.

[0010] Furthermore, a groove is horizontally opened on one side of the magnetic core I, an elastic member II and a plug pin I are arranged in the groove, one end of the elastic member II is fixedly connected with the inner wall of the groove, the other end of the elastic member II is fixedly connected with one end of the plug pin I, and the other end of the plug pin I extends out of the groove and extends into the docking hole.

[0011] Furthermore, the clamping component includes a movable platform located on top of the limiting block, a magnetic core III is vertically penetrated through the top of the movable platform, the magnetic core III is fixedly connected with the movable platform, wiring grooves I are symmetrically opened on one side of the movable platform, and limiting grooves are vertically opened on both the top of the movable platform and the magnetic core III.

[0012] Furthermore, the movable platform is hollow, round holes are horizontally opened on both sides of the movable platform, the round holes are communicated with the inner space of the movable platform, a spring plate is arranged in the movable platform, a button is arranged in the round hole, the button is slidably connected with the round hole, and one end of the button is fixedly connected with the spring plate.

[0013] Further, one end of the bottom of the spring plate is fixedly connected with a limit tooth block. One end of the limit tooth block vertically penetrates the inner wall of the movable platform and extends to the chute, and the limit tooth block meshes with the rack.

[0014] Further, a sleeve is arranged in the limit hole. One end of the sleeve is fixedly connected with the second magnetic core. The sleeve is rotationally connected with the support column. A second pin is slidably connected in the sleeve, and one end of the second pin extends out of the sleeve and the through hole.

[0015] Further, an elastic member III and a limit ring are sleeved on the second pin. The other end of the elastic member III is fixedly connected with the limit ring, and the limit ring is fixedly connected with the inner wall of the through hole.

[0016] Further, sliders are symmetrically arranged in the docking hole. The sliders are slidably connected with the docking hole, and the sliders are attached to one end of the first pin extending into the docking hole.

[0017] Further, connection blocks are symmetrically arranged in the through hole. The connection blocks are fixedly connected with the second pin. A connecting rod is rotationally connected to the connection blocks. The connecting rod is located in the through groove. One end of the connecting rod is rotationally connected with a ratchet tooth, and the ratchet tooth is rotationally connected with the inner wall of the through groove.

[0018] Further, a central shaft is fixedly connected to the inner wall of the adjustment groove. A ratchet wheel is rotationally connected to the central shaft. The ratchet wheel meshes with the ratchet tooth. A clamping plate is fixedly connected to the ratchet wheel, and a second wire groove is vertically formed on one side of the clamping plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By the cooperative use of the second pin and the slider, the slider can be pushed to move by pressing the second pin, the first pin is pushed out of the docking hole, and the support column is detached from the base, so as to conveniently replace the coil installed on the support column.

[0021] 2. By the cooperative use of the movable platform and the clamping plate, when assembling the annular coil, the movable platform abuts against the inner ring of the annular coil, and the clamping plate clamps the outer ring of the annular coil to complete the fixation of the annular coil, so that the electronic transformer can install different types of coils, enhancing the adaptability of the electronic transformer.

[0022] 3. By the cooperative use of the pressing plate, the sliding plate and the pins, during the assembly process of the electronic transformer, when the support column is installed on the base, the connection between the lead on the coil and the pin on the base is synchronously completed, making the assembly process of the electronic transformer simpler. Description of the Drawings

[0023] Figure 1 is the external view schematic diagram of the present invention;

[0024] Figure 2 is a schematic cross-sectional view of the base of the present invention;

[0025] Figure 3 is a schematic view of the internal structure of the base of the present invention;

[0026] Figure 4 is a schematic view of the appearance of the present invention;

[0027] Figure 5 is a schematic view of the limit block of the present invention;

[0028] Figure 6 is a schematic cross-sectional view of the first magnetic core of the present invention;

[0029] Figure 7 is a schematic view of the internal structure of the movable platform of the present invention;

[0030] Figure 8 is a schematic view of the appearance of the support column of the present invention;

[0031] Figure 9 is a schematic view of the internal structure of the support column of the present invention;

[0032] Figure 10 is a schematic cross-sectional view of the second magnetic core of the present invention;

[0033] Figure 11 is a schematic view of the appearance of installing the toroidal coil of the present invention.

[0034] In the figure:

[0035] 1. Bearing unit; 11. Base; 12. Wiring groove; 13. Wiring hole; 14. Slide plate; 15. First elastic member; 16. Pin; 17. Pressure plate; 18. Limit strip; 2. Clamping unit; 21. Limit assembly; 211. Limit block; 212. Chute; 213. Rack; 214. First magnetic core; 215. Groove; 216. Second elastic member; 217. First pin; 22. Clamping assembly; 221. Movable platform; 222. Third magnetic core; 223. First wire groove; 224. Limit groove; 225. Round hole; 226. Spring plate; 227. Button; 228. Limit tooth block; 3. Electromagnetic unit; 31. Support column; 311. Limit hole; 312. Docking hole; 313. Sleeve; 314. Second pin; 315. Third elastic member; 316. Limit ring; 317. Slide block; 32. Second magnetic core; 321. Through hole; 322. Adjustment groove; 323. Through slot; 324. Connecting block; 325. Connecting rod; 326. Ratchet tooth; 327. Central axis; 328. Ratchet wheel; 329. Clamping plate; 3210. Second wire groove. Detailed implementation manners

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] The present invention provides a modular electronic transformer that is easy to assemble, comprising: a carrying unit 1, a clamping unit 2 located on the top of the carrying unit 1, and an electromagnetic unit 3 located on the top of the clamping unit 2, wherein the carrying unit 1 comprises a base 11, a wiring groove 12 is vertically opened on the top of the base 11, wiring holes 13 are vertically opened at the four corners of the wiring groove 12, a slide plate 14 is symmetrically arranged in the wiring groove 12, an elastic member 15 is fixedly connected to one side of the sliding plate 14, one end of the elastic member 15 is fixedly connected to one side of the inner wall of the wiring groove 12, a pin 16 is fixedly connected in the wiring hole 13, the pin 16 is in contact with the sliding plate 14, one end of the pin 16 extends out of the wiring hole 13, and the sliding plate A pressure plate 17 is provided at the top of 14, and the pressure plate 17 is slidably connected to the inner wall of the wiring groove 12. The bottom of the pressure plate 17 is fixedly connected to a limit strip 18, and the limit strip 18 is located between the symmetrically arranged slides 14, and the limit strip 18 is in contact with one side of the slide 14. When installing the coil, the leads of the primary coil and the secondary coil are respectively inserted into the wiring holes 13. The pressure of the pressure plate 17 by the support column 31 above it will drive the limit strip 18 to move downward along the inner wall of the wiring groove 12. The limit strip 18 will open the symmetrically arranged slides 14 and compress the elastic member 15. At this time, the semicircular notch on one side of the slide 14 will combine with the semicircular notch on the pin 16 to fix the lead in the wiring hole 13, completing the wiring;

[0038] The clamping unit 2 includes a limiting assembly 21 provided on both sides of the top of the base 11, a clamping assembly 22 is provided on the top of the limiting assembly 21, and the limiting assembly 21 includes a limiting block 211 fixed to one side of the top of the base 11, and a symmetrical vertical slide 212 is opened on the top of the limiting block 211. A rack 213 is fixedly connected to the inner wall of the slide 212, and a magnetic core 1 214 is fixedly connected to the limiting block 211. Moving the clamping assembly 22 can drive the magnetic core 3 222 to move;

[0039] The electromagnetic unit 3 includes a support column 31 disposed on the top of the pressing plate 17. A second magnetic core 32 is provided on the top of the support column 31. A limiting hole 311 is vertically opened at the top of the support column 31. Docking holes 312 are horizontally opened at both bottom ends of the support column 31. The docking holes 312 communicate with the limiting hole 311. A through hole 321 is vertically opened at the top of the second magnetic core 32. Adjusting grooves 322 are vertically opened at both ends of the top of the second magnetic core 32. A through groove 323 is horizontally opened on the inner wall of the adjusting groove 322. The through groove 323 communicates with the through hole 321. The first magnetic core 214, the second magnetic core 32, the third magnetic core 222, the support column 31, and a pair of clamping plates 329 form a loop, which is used to enhance and concentrate the magnetic field when installing the laminated coil.

[0040] Wherein, a groove 215 is horizontally opened on one side of the first magnetic core 214. An elastic member II 216 and a first pin 217 are disposed in the groove 215. One end of the elastic member II 216 is fixedly connected to the inner wall of the groove 215. The other end of the elastic member II 216 is fixedly connected to one end of the first pin 217. The other end of the first pin 217 extends out of the groove 215 and extends into the docking hole 312. When the first pins 217 on both sides of the docking hole 312 enter the docking hole 312, the position of the support column 31 will be fixed.

[0041] Wherein, the clamping assembly 22 includes a movable platform 221 located on the top of the limiting block 211. A third magnetic core 222 is vertically penetrated through the top of the movable platform 221. The third magnetic core 222 is fixedly connected to the movable platform 221. A first wire groove 223 is symmetrically opened on one side of the movable platform 221. Limiting grooves 224 are vertically opened on the tops of the movable platform 221 and the third magnetic core 222. The bottom end of the clamping plate 329 is strip-shaped. When installing the laminated coil, the bottom end of the clamping plate 329 will enter the limiting groove 224 to limit the clamping plate 329. When the electronic transformer installs the toroidal coil, the movement of the movable platform 221 will drive the third magnetic core 222 to move, so that the first wire groove 223 fits with the inner ring of the toroidal coil. The wire on the inner ring of the toroidal coil will be stuck in the first wire groove 223. The first wire groove 223 will increase the friction between the movable platform 221 and the inner ring of the toroidal coil, making the installation of the toroidal coil more stable.

[0042] Wherein, the movable platform 221 is hollow. Circular holes 225 are horizontally opened on both sides of the movable platform 221. The circular holes 225 communicate with the internal space of the movable platform 221. A spring plate 226 is disposed in the movable platform 221. A button 227 is disposed in the circular hole 225. The button 227 is slidably connected to the circular hole 225. One end of the button 227 is fixedly connected to the spring plate 226. Pressing the buttons 227 on both sides of the movable platform 221 will compress the spring plate 226 and drive the limiting tooth block 228 to move.

[0043] Wherein, one end of the bottom of the spring plate 226 is fixedly connected with a limit tooth block 228. One end of the limit tooth block 228 vertically penetrates the inner wall of the movable platform 221 and extends to the chute 212. The limit tooth block 228 meshes with the rack 213. When the limit tooth block 228 meshes with the rack 213, the movement of the movable platform 221 will be restricted. When the button 227 is pressed to disengage the limit tooth block 228 from the rack 213, the movable platform 221 can move within the chute 212.

[0044] Wherein, a sleeve 313 is arranged in the limit hole 311. One end of the sleeve 313 is fixedly connected with the second magnetic core 32. The sleeve 313 is rotatably connected with the support column 31. A second pin 314 is slidably connected in the sleeve 313. One end of the second pin 314 extends out of the sleeve 313 and the through hole 321. When the movable platform 221 drives the third magnetic core 222 to move, the bottom end of the clamping plate 329 will disengage from the limit groove 224. At this time, the second magnetic core 32 together with the sleeve 3 can rotate within the limit hole 311.

[0045] Wherein, a third elastic member 315 and a limit ring 316 are sleeved on the second pin 314. One end of the third elastic member 315 is fixedly connected with the second pin 314. The limit ring 316 is fixedly connected with the inner wall of the through hole 321. The third elastic member 315 can reset the pressed second pin 314. The limit ring 316 is used to limit the position of the second pin 314 within the through hole 321.

[0046] Wherein, sliders 317 are symmetrically arranged in the docking hole 312. The sliders 317 are slidably connected with the docking hole 312. The sliders 317 are in contact with one end of the first pin 217 extending into the docking hole 312. One end of the second pin 314 located in the sleeve is conical. When the second pin 3 is pressed, the second pin 314 will squeeze between a pair of sliders 317 and push the pair of sliders 317 to move, thereby pushing the first pin 217 to retract into the groove 215. When the first pin 217 completely retracts into the groove 215, the fixed connection between the support column 31 and the first magnetic core 214 is released. At this time, the support column 31 can be disassembled for replacing the coil.

[0047] Wherein, connection blocks 324 are symmetrically arranged in the through hole 321. The connection blocks 324 are fixedly connected with the second pin 314. A connecting rod 325 is rotatably connected to the connection block 324. The connecting rod 325 is located in the through groove 323. One end of the connecting rod 325 is rotatably connected with a ratchet tooth 326. The ratchet tooth 326 is rotatably connected with the inner wall of the through groove 323. Pressing the second pin will drive the connection block 324 to move downward, thereby driving the connecting rod 325 to move and causing the ratchet tooth 326 to rotate within the through groove 323, releasing the restriction of the ratchet tooth 326 on the ratchet wheel 328.

[0048] Among them, a central shaft 327 is fixedly connected to the inner wall of the adjustment groove 322. A ratchet wheel 328 is rotatably connected to the central shaft 327. The ratchet wheel 328 meshes with the ratchet teeth 326. A clamping plate 329 is fixedly connected to the ratchet wheel 328. A second wire groove 3210 is vertically formed on one side of the clamping plate 329. The ratchet wheel 328 rotates around the central shaft 327 to adjust the angle between the clamping plate 329 and the second magnetic core 32, so that the clamping plate 329 can conveniently clamp the outer ring of the toroidal coil. The second wire groove 3210 can increase the friction force between the clamping plate 329 and the outer ring of the toroidal coil, making the clamping more stable.

[0049] Embodiment 1:

[0050] As Figures 1-11 shown, in this embodiment, the coils of the electronic transformer usually have two types: layer type and ring type. When assembling the electronic transformer with the layer type transformer coil, first press the second pin 314. The second pin 314 will move vertically downward along the through hole 321. During the movement, the limiting ring 316 will apply pressure to the third elastic member 315, compressing the third elastic member 315. One end of the second pin 314 located inside the support column 31 will slide into the space between a pair of sliders 317 during the movement, fit with the side surfaces of the pair of sliders 317, and push the sliders 317 to move in the docking hole 312 as the second pin 314 moves, gradually increasing the distance between the pair of sliders 317. The movement of the sliders 317 in the docking hole 312 will push the first pin 217 to move along the groove 215, causing the end of the first pin 217 that extends out of the groove 215 and is located inside the docking hole 312 to gradually retract into the groove 215. During this process, the second elastic member 216 will be compressed until the first pin 217 is completely pushed out of the support column 31. At this time, the support column 31 is separated from the first magnetic core 214.

[0051] After removing the support column 31 from the base 11, release the pressing on the second pin 314. The second pin 314 will reset under the action of the third elastic member 315. The second elastic member 216 loses pressure and will push the first pin 217 out of the groove 215. Slip the layer type coil onto the support column 31. Insert the leads on the coil into the wiring holes 13 according to the wiring requirements respectively. Then align the support column 31 between a pair of first magnetic cores 214 on the base 11. The bottom edge of the support column 31 will contact the arc surface of one end of the first pin 217, applying a vertically downward pressure to the support column 31 to make it move downward. The bottom edge of the support column 31 will push the first pin 217 into the groove 215. The second elastic member 216 will be compressed during this process until the support column 31 contacts the base 11. The second elastic member 216 pushes the first pin 217 into the docking hole 312 to fix the support column 31. The bottom end of the clamping plate 329 will enter the limiting groove 224. As Figure 1 shown, the installation of the coil is completed.

[0052] It should be noted that during the process of installing the support column 31 on the base 11, the bottom of the support column 31 will exert pressure on the pressure plate 17, pushing the pressure plate 17 to move downward along the wiring groove 12, causing the limiting strip 18 to contact the side surfaces of the symmetrically arranged sliding plates 14, and pushing the sliding plates 14 as they are pressed, so that the first elastic member 15 is compressed. During this process, the semi-circular notch on one side of the sliding plate 14 will be closed with the semi-circular notch at one end of the lead pin 16 in the wiring hole 13, clamping the lead wire previously placed in the wiring hole 13 to complete the connection between the lead wire and the lead pin 16.

[0053] According to different usage requirements, when installing a toroidal coil on the electronic transformer, first remove the second magnetic core 32 together with the support column 31 according to the above steps, place the toroidal coil on the limiting block 211, press the button 227 to compress the spring plate 226, thereby driving the limiting tooth block 228 to move and disengaging it from the rack 213. At this time, the movable platform 221 is released from the fixed connection with the limiting block 211, driving the third magnetic core 222 to move along the sliding groove 212, so that a pair of movable platforms 221 move into the toroidal coil. Then adjust the pair of movable platforms 221 so that the side with the first wire groove 223 is in contact with the inner circle of the toroidal coil. Release the button 227, the limiting tooth block 228 meshes with the rack 213, and the movable platform 221 and the limiting block 211 are transformed into a fixed connection. The wire wound on the inner circle of the toroidal coil will enter the first wire groove 223 to limit the horizontal movement of the toroidal coil.

[0054] Then install the support column 31 on the base 11. Since the movable platform 221 moves along the sliding groove 212, the position of the limiting groove 224 also changes accordingly. When the support column 31 is installed on the base 11, the bottom end of the clamping plate 329 no longer enters the limiting groove 224. Rotate the second magnetic core 32 and the sleeve 313 by a certain angle in the limiting hole 311, press the second pin 314 to drive the connecting block 324 to move downward, and then drive the connecting rod 325 to move so that the ratchet tooth 326 rotates in the through groove 323, releasing the restriction of the ratchet tooth 326 on the ratchet wheel 328 in the adjusting groove 322. Pull the clamping plate 329 to rotate the ratchet wheel 328 around the central axis 327 until the clamping plates 329 at both ends of the second magnetic core 32 are in a horizontal position. Release the second pin 314, and the third elastic member 315 will push the second pin 314 to reset. The ratchet tooth 326 meshes with the ratchet wheel 328, and rotate the clamping plates 329 on both sides of the second magnetic core 32 to rotate them downward until they clamp the outer circle of the toroidal coil. The ratchet tooth 326 will limit the rotation direction of the clamping plate 329. The wire wound on the outer circle of the toroidal coil will enter the second wire groove 3210 to increase the friction between the toroidal coil and the clamping plate 329, making the clamping more stable. The wiring steps are the same as those for assembling the layer coil.

[0055] It should be noted that during the process of assembling an electronic transformer using a toroidal coil, since the toroidal coil comes with its own magnetic core, the magnetic core originally used to enhance the layer coil is disassembled, and its components are no longer connected, so that it will not affect the voltage transformation operation of the toroidal coil.

[0056] To replace the coil, just press the pin two 314, remove the support column 31 together with the magnetic core two 32. During the process of the support column 31 leaving the base 11, the pressure plate 17 loses pressure, and the elastic member one 15 will push the slide plate 14, reducing the distance between a pair of slide plates 14. The clamping of the lead by the slide plate 14 and the pin 16 is released. After the support column 31 is completely separated from the base 11, the coil can be replaced.

[0057] The embodiments of the present invention are given for the purposes of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular electronic transformer that is convenient for assembly, comprising: A carrying unit (1), a clamping unit (2) located on top of the carrying unit (1), and an electromagnetic unit (3) located on top of the clamping unit (2), characterized in that: the carrying unit (1) includes a base (11), a wiring groove (12) is vertically opened at the top of the base (11), wiring holes (13) are vertically opened at the four corners of the wiring groove (12), sliding plates (14) are symmetrically arranged in the wiring groove (12), an elastic member one (15) is fixedly connected to one side of the sliding plate (14), one end of the elastic member one (15) is fixedly connected to one side inner wall of the wiring groove (12), a pin (16) is fixedly connected in the wiring hole (13), the pin (16) is in contact with the sliding plate (14), one end of the pin (16) extends out of the wiring hole (13), a pressing plate (17) is arranged on the top of the sliding plate (14), the pressing plate (17) is slidably connected to the inner wall of the wiring groove (12), a limiting strip (18) is fixedly connected to the bottom of the pressing plate (17), the limiting strip (18) is located between the symmetrically arranged sliding plates (14), and the limiting strip (18) is in contact with one side of the sliding plate (14); The clamping unit (2) includes limiting components (21) arranged on both sides of the top of the base (11), a clamping component (22) is arranged on the top of the limiting components (21), the limiting components (21) include limiting blocks (211) fixed on one side of the top of the base (11), sliding grooves (212) are symmetrically and vertically opened on the top of the limiting blocks (211), racks (213) are fixedly connected to the inner walls of the sliding grooves (212), and a magnetic core one (214) is fixedly connected to the limiting blocks (211); The electromagnetic unit (3) includes a support column (31) arranged on the top of the pressing plate (17), a magnetic core two (32) is arranged on the top of the support column (31), a limiting hole (311) is vertically opened on the top of the support column (31), docking holes (312) are horizontally opened at both bottom ends of the support column (31), the docking holes (312) are communicated with the limiting hole (311), a through hole (321) is vertically opened on the top of the magnetic core two (32), adjusting grooves (322) are vertically opened at both ends of the top of the magnetic core two (32), a through groove (323) is horizontally opened on the inner wall of the adjusting groove (322), and the through groove (323) is communicated with the through hole (321); A groove (215) is horizontally opened on one side of the magnetic core one (214), an elastic member two (216) and a plug pin one (217) are arranged in the groove (215), one end of the elastic member two (216) is fixedly connected to the inner wall of the groove (215), the other end of the elastic member two (216) is fixedly connected to one end of the plug pin one (217), and the other end of the plug pin one (217) extends out of the groove (215) and extends into the docking hole (312); The clamping assembly (22) includes a movable platform (221) located at the top of the limit block (211). A third magnetic core (222) is vertically penetrated through the top of the movable platform (221). The third magnetic core (222) is fixedly connected to the movable platform (221). On one side of the movable platform (221), a first wire groove (223) is symmetrically opened. Limit grooves (224) are vertically opened on both the top of the movable platform (221) and the third magnetic core (222). A sleeve (313) is arranged in the limit hole (311). The sleeve (313) is rotatably connected to the support column (31). One end of the sleeve (313) is fixedly connected to the second magnetic core (32). A second pin (314) is slidably connected in the sleeve (313). One end of the second pin (314) extends out of the sleeve (313) and the through hole (321).

2. The modular electronic transformer according to claim 1, characterized in that: The movable platform (221) is hollow. Round holes (225) are horizontally opened on both sides of the movable platform (221). The round holes (225) are communicated with the internal space of the movable platform (221). A spring plate (226) is arranged in the movable platform (221). A button (227) is arranged in the round hole (225). The button (227) is slidably connected to the round hole (225). One end of the button (227) is fixedly connected to the spring plate (226).

3. The modular electronic transformer as claimed in claim 2, wherein: One end of the bottom of the spring plate (226) is fixedly connected to a limit tooth block (228). One end of the limit tooth block (228) vertically penetrates the inner wall of the movable platform (221) and extends to the chute (212). The limit tooth block (228) is engaged with the rack (213).

4. The modular electronic transformer as claimed in claim 1, wherein: An elastic member three (315) and a limit ring (316) are sleeved on the second pin (314). The other end of the elastic member three (315) is fixedly connected to the limit ring (316). The limit ring (316) is fixedly connected to the inner wall of the through hole (321).

5. The modular electronic transformer according to claim 1, wherein: Sliders (317) are symmetrically arranged in the docking hole (312). The sliders (317) are slidably connected to the docking hole (312). The sliders (317) are in contact with one end of the first pin (217) extending into the docking hole (312).

6. The modular electronic transformer as claimed in claim 1, wherein: Connecting blocks (324) are symmetrically arranged in the through hole (321). The connecting blocks (324) are fixedly connected to the second pin (314). A connecting rod (325) is rotatably connected to the connecting blocks (324). The connecting rod (325) is located in the through groove (323). One end of the connecting rod (325) is rotatably connected to a ratchet tooth (326). The ratchet tooth (326) is rotatably connected to the inner wall of the through groove (323).

7. The modular electronic transformer as claimed in claim 6, wherein: A central shaft (327) is fixedly connected to the inner wall of the adjustment groove (322). A ratchet wheel (328) is rotatably connected to the central shaft (327). The ratchet wheel (328) is engaged with the ratchet tooth (326). A clamping plate (329) is fixedly connected to the ratchet wheel (328). A second wire groove (3210) is vertically opened on one side of the clamping plate (329).

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