A current transformer with detachable inlet and outlet terminals

Abstract

The present invention discloses a current transformer with detachable inlet and outlet terminals, which relates to the field of current transformers, and includes a frame and a card. An arc-shaped adjustment slot is provided on the left side of the top of the frame, and a cylindrical fitting slot is provided on the right side of the top of the frame. The card is attached to the left side of the frame, and the size of the slot is matched with the shape of the frame. The problem that the inlet and outlet terminals of the current transformer in the prior art cannot be adjusted or disassembled is solved. Usually, after the coil is wound on the frame, one end of the coil is directly welded to the pin. However, whether it is manual welding or mechanical welding, it is very likely to affect the welding end of the coil and the pin, causing a cold weld between the coil and the pin, thereby causing quality problems. A current transformer with detachable inlet and outlet terminals is provided, which is plugged into the frame through an array card, and the copper wire is wound on the card to facilitate welding with the terminal, thereby facilitating the rapid installation of the current transformer on the circuit board.

Description

Technical Field

[0001] The invention relates to the field of current transformers, in particular to a current transformer with detachable input and output terminals. Background Art

[0002] Current transformer is a sensor used by measuring instruments, relay protection and other secondary equipment in the power system to obtain primary circuit current information. It is an important electrical equipment in the power system and is responsible for the isolation between high and low voltage systems and the conversion of high voltage to low voltage.

[0003] Common problems of existing current transformers are as follows: In the prior art, the input and output terminals of the current transformer cannot be adjusted or disassembled. Usually, after the coil is wound on the frame, one end of the coil is directly welded to the pin. However, whether it is manual welding or mechanical welding, it is very likely to affect the welding end of the coil and the pin, causing a cold weld between the coil and the pin, thereby causing quality problems. Summary of the invention

[0004] The object of the present invention is to provide a current transformer with detachable input and output terminals, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a current transformer with detachable input and output terminals, comprising a frame and a card, an arc-shaped adjustment groove is opened on the left side of the top of the frame, and a detachment surface inclined to the upper right is opened on the right half of the adjustment groove, a cylindrical fitting groove is opened on the right side of the top of the frame, and the fitting groove depth is greater than the opening depth of the adjustment groove, the card is attached to the left side of the frame, and a slot is opened at the bottom of the right side of the card, the opening size of the slot is matched with the shape of the frame, the docking mechanism is arranged at the top right side of the card, the docking mechanism comprises a sleeve, a plunger and a receiving groove, a plunger is fixedly installed inside the top of the sleeve, and receiving grooves are symmetrically opened on the front and rear end surfaces of the plunger, and the opening depth of the receiving groove is less than the thickness of the plunger.

[0006] Furthermore, the docking mechanism also includes a through groove and a sliding rod. The through grooves are symmetrically opened on the left and right end surfaces of the plunger, and the through grooves penetrate the plunger and are connected to the inner cavity at the bottom of the sleeve. A sliding rod is slidably installed inside the plunger.

[0007] Furthermore, the docking mechanism also includes a cross bar, a sleeve spring and a boss. The cross bar is integrally fixedly installed on the top of the sliding rod, and the shape of the cross bar matches the receiving groove and the through groove respectively. The bottom of the sliding rod is sleeved with a sleeve spring, and the sliding rod is elastically connected to the plunger through the sleeve spring. The bottom end face of the sliding rod is fixedly connected to the boss, and the bottom end face of the boss is arc-shaped.

[0008] Furthermore, a wire outlet slot is provided at the top left side of the card, and a spring sheet is attached to the top of the wire outlet slot. A wiring terminal is provided inside the spring sheet, and a pin is electrically connected to the top of the wiring terminal. The connection between the wiring terminal and the pin is perpendicular to each other to form an L-shaped structure.

[0009] Furthermore, a disassembly and assembly mechanism is provided in the middle of the card, and the disassembly and assembly mechanism includes a cavity, a right longitudinal groove, a screw rod and a right inclined surface. A right longitudinal groove is opened at the bottom of the cavity, and the cavity is opened in the middle of the front of the card. A screw rod is meshed and installed inside the right longitudinal groove, and a right inclined surface inclined to the lower right is provided at the bottom of the screw rod.

[0010] Furthermore, the disassembly and assembly mechanism also includes a transverse groove and a sliding roller. A transverse groove is opened on the left side of the bottom of the right longitudinal groove, and a sliding roller is slidably installed inside the transverse groove. The screw rod is transmission-connected to the sliding roller through the right inclined surface.

[0011] Furthermore, the disassembly and assembly mechanism also includes a left longitudinal groove and a push rod. The left longitudinal groove is opened at the top of one end of the transverse groove away from the right longitudinal groove, and a push rod is slidably installed inside the left longitudinal groove. The push rod is elastically connected to the terminal through a spring sheet.

[0012] Furthermore, the disassembly and assembly mechanism also includes a left inclined surface and a compression spring. The bottom of the push rod is provided with a left inclined surface inclined downward to the left, and the sliding roller is transmission-connected to the push rod through the left inclined surface. The top of the push rod is provided with a compression spring, and the push rod is elastically connected to the card through the compression spring.

[0013] Furthermore, a cable groove is provided in the middle of the top of the card, and copper wires are arranged at the bottom of the cable groove. The cable management mechanism is attached to the right end face of the cable groove. The cable management mechanism includes a column, a connecting plate and a holding groove. A connecting plate is fixedly installed on the left side of the top of the column, and holding grooves are symmetrically provided on both sides of the middle of the connecting plate. The depth of the holding groove is less than the width of the connecting plate.

[0014] Furthermore, the wire management mechanism also includes a spring, a pressure plate and a handle. Springs are connected to both sides of the bottom of the connecting plate, and the spring is elastically connected to the pressure plate at one end away from the connecting plate. The pressure plate is slidably installed on the left side of the column, and a handle is fixedly installed on the top middle part of the pressure plate. The handle is located directly below the position where the holding groove is opened.

[0015] Compared with the prior art, the beneficial effects of the present invention are: solving the problem that the input and output terminals of the current transformer in the prior art cannot be adjusted or disassembled, usually after the coil is wound on the frame, one end of the coil is directly welded to the pin, but whether it is manual welding or mechanical welding, it is very likely to affect the welding end of the coil and the pin, causing a cold weld between the coil and the pin, thereby causing a technical problem of quality problems, and providing a current transformer with detachable input and output terminals, which is plugged into the frame through an array card, and the copper wire is wound on the card to facilitate welding with the terminal, thereby facilitating the rapid installation of the current transformer on the circuit board.

[0016] 1. The present invention solves the problem in the prior art that the coil is directly wound on the frame, which is inconvenient for welding the coil and the pin. The card is positioned and plugged with the frame through a slot, and the copper wire is wound in the cable groove on the card, which is convenient for welding with the terminal and minimizes the exposure of the copper wire. At the same time, it can also protect the copper wire from being damaged and broken at the corner, thereby facilitating the rapid installation of the current transformer on the circuit board. The producer can adjust the number of card groups according to actual needs, which is more autonomous.

[0017] 2. The present invention provides a docking mechanism. When it is necessary to install the card on the frame or adjust the installation position, the integrated cross bar at the top of the slide bar is pressed against the receiving grooves on the front and back sides of the plunger. At this time, the arc-shaped boss at the bottom of the slide bar is engaged in the adjusting groove on the left side of the top of the frame, which is convenient for the producer to slide and adjust the card spacing. After moving to the preset installation position, the card is pushed so that the boss leaves the adjusting groove through the disengagement surface and enters the columnar fitting groove on the right side of the top of the frame to fix its installation position. Thereafter, the slide bar is pulled and rotated. Under the elastic force of the sleeve spring, the cross bar passes through the through grooves penetrating the left and right sides of the plunger, and the slide bar drives the bottom boss to engage in the fitting groove. Through the setting of the docking mechanism, the retracting and releasing operation of the boss is simpler, which is convenient for the producer to adjust the installation position and spacing of the card according to actual needs, so that the card can be firmly docked to the preset installation position of the frame.

[0018] 3. The present invention provides a disassembly and assembly mechanism. The user inserts his finger into the cavity opened in the middle of the card and rotates the screw. The meshing action of the screw and the right longitudinal groove forces the bottom right inclined surface to slide down longitudinally. The right inclined surface slides with the input end of the slide roller to drive the slide roller to slide laterally in the transverse groove at the bottom of the right longitudinal groove. The output end of the slide roller slides with the left inclined surface to drive the ejector rod to overcome the elastic force of the compression spring and rise in the left longitudinal groove. The top output end of the ejector rod compresses the spring sheet to deform and fix the position of the terminal in the wire outlet groove. Through the provision of the disassembly and assembly mechanism, the manufacturer can adjust the position or extension length of the L-shaped pin according to actual needs, and fix the pin through simple operation, which is convenient for the stability of the subsequent connection between the coil and the terminal.

[0019] 4. The present invention provides an L-shaped pin. The user inserts the pin with an L-shaped structure into the top left side of the card. The terminal at the right end of the L-shaped pin is led out from the wire outlet slot and fixed in the wire outlet slot by a spring. When the disassembly and assembly mechanism has not locked the terminal position by the ejector rod, the user can disassemble or adjust the inlet and outlet terminals by pulling, so as to facilitate the subsequent welding of the copper wire wound in the wire slot and the terminal. At the same time, it is also beneficial to install the current transformer on the circuit board through the pin.

[0020] 5. The present invention arranges the copper wires in the wire arrangement slot provided on the top of the card through the setting of the wire arrangement mechanism. To facilitate the arrangement of the copper wires and avoid overlapping and entanglement, the wire arrangement mechanism is provided. The user holds the connecting plate, passes the base of the palm through both sides of the holding slot, closes the palm after the fingers touch the handle, and the contraction of the spring drives the pressure plate located on the left side of the column to slide up, which is convenient for the producer to lay the copper wires. Conversely, the squeezing of the pressure plate avoids overlapping and entanglement of the copper wires in the wire arrangement slot, which is beneficial to the subsequent welding of the copper wires and the terminal extending from the outlet slot, thereby solving the disadvantage of inconvenient welding in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall internal structure of a current transformer with detachable input and output terminals according to the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of a current transformer skeleton with detachable input and output terminals according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a current transformer docking mechanism with detachable inlet and outlet terminals according to the present invention;

[0024] Figure 4 It is a partial three-dimensional structural schematic diagram of a current transformer docking mechanism with detachable inlet and outlet terminals according to the present invention;

[0025] Figure 5 A current transformer with detachable inlet and outlet terminals according to the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a current transformer wire management mechanism with detachable input and output terminals.

[0027] In the figure: 1, frame; 2, adjustment slot; 3, release surface; 4, fitting slot; 5, card; 6, slot; 7, docking mechanism; 701, sleeve; 702, plunger; 703, receiving slot; 704, through slot; 705, slide bar; 706, cross bar; 707, sleeve spring; 708, boss; 8, outlet slot; 9, spring; 10, terminal; 11, pin; 12, disassembly mechanism; 1201, cavity; 120 2. Right longitudinal groove; 1203. Screw rod; 1204. Right inclined surface; 1205. Horizontal groove; 1206. Slide roller; 1207. Left longitudinal groove; 1208. Push rod; 1209. Left inclined surface; 1210. Compression spring; 13. Wire trough; 14. Copper wire; 15. Wire management mechanism; 1501. Post; 1502. Connecting plate; 1503. Holding groove; 1504. Spring; 1505. Pressing plate; 1506. Handle. DETAILED DESCRIPTION

[0028] See also Figure 1-2 The present invention provides a technical solution: a current transformer with detachable inlet and outlet terminals, comprising a frame 1 and a card 5, an arc-shaped adjustment slot 2 is provided on the left side of the top of the frame 1, and a disengagement surface 3 inclined upward to the right is provided on the right half of the adjustment slot 2, a cylindrical fitting slot 4 is provided on the right side of the top of the frame 1, and the depth of the fitting slot 4 is greater than the depth of the adjustment slot 2, the card 5 is attached to the left side of the frame 1, and a slot 6 is provided on the bottom right side of the card 5, and the size of the slot 6 is consistent with the shape of the frame 1;

[0029] The specific operation is as follows. When in use, the arrangement of the card 5 solves the drawback of the prior art that the coil is directly wound on the frame 1, which is not convenient for welding the coil and the pin 11. The manufacturer can adjust the number of groups of the card 5 according to actual needs. The card 5 is positioned and plugged with the frame 1 through the slot 6. The copper wire 14 is wound in the cable groove 13 on the card 5, which is convenient for welding with the terminal 10 and minimizes the exposure of the copper wire 14. At the same time, it can also protect the copper wire 14 from being broken due to damage when turning a corner, thereby facilitating the rapid installation of the current transformer on the circuit board.

[0030] See also Figure 3-4The docking mechanism 7 is arranged at the top right side of the card 5. The docking mechanism 7 includes a sleeve 701, a plunger 702 and a receiving groove 703. The plunger 702 is fixedly installed inside the top of the sleeve 701, and the receiving grooves 703 are symmetrically opened on the front and back end surfaces of the plunger 702. The depth of the receiving groove 703 is less than the thickness of the plunger 702. The docking mechanism 7 also includes a through groove 704 and a slide bar 705. The through grooves 704 are symmetrically opened on the left and right end surfaces of the plunger 702, and the through grooves 704 run through the plunger 702 and the bottom of the sleeve 701. The inner cavities are connected, a slide bar 705 is slidably installed inside the plunger 702, and the docking mechanism 7 also includes a cross bar 706, a sleeve spring 707 and a boss 708. The top of the slide bar 705 is fixedly installed with a cross bar 706 in an integrated manner, and the shape of the cross bar 706 is respectively matched with the receiving groove 703 and the through groove 704, and the bottom of the slide bar 705 is sleeved with a sleeve spring 707, and the slide bar 705 is elastically connected to the plunger 702 through the sleeve spring 707, and the bottom end face of the slide bar 705 is fixedly connected with a boss 708, and the bottom end face of the boss 708 is arc-shaped;

[0031] The specific operation is as follows: when it is necessary to install the card 5 on the frame 1 or adjust the installation position, the integrated cross bar 706 on the top of the slide bar 705 is pressed in the receiving grooves 703 on the front and back sides of the plunger 702. At this time, the arc-shaped boss 708 at the bottom of the slide bar 705 is engaged with the adjustment groove 2 on the left side of the top of the frame 1, which is convenient for the manufacturer to slide and adjust the spacing of the card 5. After moving to the preset installation position, the card 5 is pushed so that the boss 708 leaves the adjustment groove 2 through the disengagement surface 3 and enters the columnar fitting groove 4 on the right side of the top of the frame 1 to fix its installation position. Thereafter, the slide bar 705 is pulled and rotated. Under the elastic force of the sleeve spring 707, the cross bar 706 passes through the through groove 704 penetrating the left and right sides of the plunger 702, and the slide bar 705 drives the bottom boss 708 to be engaged in the fitting groove 4;

[0032] See also Figure 5A wire outlet slot 8 is provided at the top left side of the card 5, and a spring sheet 9 is attached to the top of the wire outlet slot 8, a wiring terminal 10 is provided inside the spring sheet 9, and a pin 11 is electrically connected to the top of the wiring terminal 10, and the connection between the wiring terminal 10 and the pin 11 is perpendicular to each other to form an L-shaped structure, a disassembly mechanism 12 is provided in the middle of the card 5, and the disassembly mechanism 12 includes a cavity 1201, a right longitudinal groove 1202, a screw rod 1203 and a right inclined surface 1204, a right longitudinal groove 1202 is provided at the bottom of the cavity 1201, and the cavity 1201 is provided in the middle of the front of the card 5, a screw rod 1203 is meshed and installed inside the right longitudinal groove 1202, and a right inclined surface 1204 inclined to the lower right is provided at the bottom of the screw rod 1203, the disassembly mechanism 12 also includes a transverse groove 1205 and a sliding roller 1206, and a transverse groove 1205 is provided on the left side of the bottom of the right longitudinal groove 1202 , and a sliding roller 1206 is slidably installed inside the transverse groove 1205, the screw rod 1203 is transmission-connected to the sliding roller 1206 through the right inclined surface 1204, the disassembly and assembly mechanism 12 also includes a left longitudinal groove 1207 and a push rod 1208, the left longitudinal groove 1205 is provided with a left longitudinal groove 1207 at the top of one end away from the right longitudinal groove 1202, and a push rod 1208 is slidably installed inside the left longitudinal groove 1207, and the push rod 1208 is elastically connected to the terminal 10 through the spring piece 9, the disassembly and assembly mechanism 12 also includes a left inclined surface 1209 and a compression spring 1210, a left inclined surface 1209 inclined downward to the left is provided at the bottom of the push rod 1208, and the sliding roller 1206 is transmission-connected to the push rod 1208 through the left inclined surface 1209, a compression spring 1210 is sleeved on the top of the push rod 1208, and the push rod 1208 is elastically connected to the card 5 through the compression spring 1210;

[0033] The specific operation is as follows: the user inserts the pin 11 of the L-shaped structure into the top left side of the card 5, and the terminal 10 at the right end of the L-shaped pin 11 is led out from the outlet groove 8 and fixed in the outlet groove 8 by the spring 9. When the disassembly mechanism 12 has not locked the position of the terminal 10 by the top rod 1208, the user can disassemble or adjust the inlet and outlet terminals by pulling, so as to facilitate the subsequent welding of the copper wire 14 wound in the cable groove 13 and the terminal 10, and also facilitate the installation of the current transformer on the circuit board through the pin 11. The user inserts his finger into the cavity 120 opened in the middle of the card 5. 1, the screw rod 1203 is rotated, and the bottom right inclined surface 1204 is forced to slide down longitudinally under the meshing action of the screw rod 1203 and the right longitudinal groove 1202. The right inclined surface 1204 slides with the input end of the sliding roller 1206, driving the sliding roller 1206 to slide horizontally in the transverse groove 1205 at the bottom of the right longitudinal groove 1202. The sliding end of the sliding roller 1206 slides with the left inclined surface 1209, driving the push rod 1208 to overcome the elastic force of the compression spring 1210 and rise in the left longitudinal groove 1207. The top output end of the push rod 1208 compresses the spring piece 9 to deform and fix the position of the terminal 10 in the outlet groove 8.

[0034] See also Figure 6A cable groove 13 is provided at the middle of the top of the card 5, and copper wires 14 are arranged at the bottom of the cable groove 13. A cable management mechanism 15 is attached to the right end surface of the cable groove 13. The cable management mechanism 15 includes a column 1501, a connecting plate 1502 and a holding groove 1503. A connecting plate 1502 is fixedly installed on the left side of the top of the column 1501, and holding grooves 1503 are symmetrically provided on both sides of the middle of the connecting plate 1502. The depth of the holding groove 1503 is less than that of the connecting plate 1501. 2 width, the cable management mechanism 15 also includes a spring 1504, a pressure plate 1505 and a grip 1506, the two sides of the bottom of the connecting plate 1502 are connected with springs 1504, and the end of the spring 1504 away from the connecting plate 1502 is elastically connected with the pressure plate 1505, the pressure plate 1505 is slidably installed on the left side of the column 1501, and the grip 1506 is fixedly installed on the top of the middle part of the pressure plate 1505, and the grip 1506 is located directly below the opening position of the holding groove 1503;

[0035] The specific operation is as follows: the copper wire 14 is arranged in the cable arrangement groove 13 opened at the top of the card 5. In order to facilitate the arrangement of the copper wire 14 and avoid overlapping and entanglement, through the setting of the cable management mechanism 15, the user holds the connecting plate 1502, passes the base of the palm through the two sides of the holding groove 1503, and closes the palm after the fingers touch the handle 1506. The spring 1504 contracts and drives the pressure plate 1505 located on the left side of the column 1501 to slide up, which is convenient for the producer to lay the copper wire 14. On the contrary, the squeezing of the pressure plate 1505 avoids the overlapping and entanglement of the copper wire 14 in the cable arrangement groove 13, which is beneficial to the subsequent welding of the copper wire 14 with the terminal 10 extending from the outlet groove 8.

[0036] In summary, a current transformer with detachable input and output terminals, when in use, the setting of the card 5 solves the disadvantage that the coil is directly wound on the frame 1 in the prior art, which is not convenient for welding the coil and the pin 11. The manufacturer can adjust the number of groups of the card 5 according to actual needs. When the card 5 needs to be installed on the frame 1 or the installation position is adjusted, the integrated cross bar 706 on the top of the slide bar 705 is pressed in the receiving groove 703 on the front and back sides of the plunger 702. At this time, the arc-shaped boss 708 at the bottom of the slide bar 705 is engaged in the adjustment groove 2 on the left side of the top of the frame 1, which is convenient for the manufacturer to slide and adjust the spacing of the card 5. After moving to the preset installation position, the card 5 is pushed so that the boss 708 leaves the adjustment groove 2 through the disengagement surface 3 and enters the columnar fitting groove 4 on the right side of the top of the frame 1. After fixing its installation position, the slide bar 705 is pulled and rotated. Under the elastic force of the sleeve spring 707, the cross bar 706 passes through the through groove 704 penetrating the left and right sides of the plunger 702. The slide bar 705 drives the bottom boss 708 to engage in the fitting groove 4. The user inserts the pin 11 with an L-shaped structure into the top left side of the card 5. The terminal 10 at the right end of the L-shaped pin 11 is led out from the outlet groove 8 and fixed in the outlet groove 8 by the spring 9. When the disassembly mechanism 12 has not locked the position of the terminal 10 through the top rod 1208, the user can realize the disassembly or adjustment of the inlet and outlet terminals by pulling, so as to facilitate the subsequent welding of the copper wire 14 wound in the wiring groove 13 and the terminal 10. At the same time, it is also convenient to install the current transformer through the pin 11 Installed on the circuit board, the user inserts his finger into the cavity 1201 opened in the middle of the card 5 and rotates the screw rod 1203. Under the meshing action of the screw rod 1203 and the right longitudinal groove 1202, the bottom right inclined surface 1204 is forced to slide down longitudinally. The right inclined surface 1204 slides with the input end of the sliding roller 1206 to drive the sliding roller 1206 to slide horizontally in the transverse groove 1205 at the bottom of the right longitudinal groove 1202. The sliding end of the sliding roller 1206 slides with the left inclined surface 1209 to drive the ejector rod 1208 to overcome the elastic force of the compression spring 1210 and rise in the left longitudinal groove 1207. The top output end of the ejector rod 1208 compresses the spring sheet 9 to deform and fix the position of the terminal 10 in the wire outlet groove 8. The copper wire 14 is arranged in the wire arrangement groove 13 opened at the top of the card 5. In order to facilitate the arrangement of the copper wires 14 and avoid overlapping and entanglement, the wire management mechanism 15 is set. The user holds the connecting plate 1502 and passes the base of the palm through the two sides of the holding groove 1503. After the fingers touch the pinch handle 1506, the palm is closed. The spring 1504 contracts and drives the pressure plate 1505 located on the left side of the column 1501 to slide up, which is convenient for the producer to lay the copper wires 14. On the contrary, the squeezing of the pressure plate 1505 avoids the overlapping and entanglement of the copper wires 14 in the wiring groove 13, which is conducive to the subsequent welding of the copper wires 14 and the terminal 10 extending from the outlet groove 8. The card 5 is positioned and plugged with the skeleton 1 through the slot 6. The copper wire 14 is wound in the wiring groove 13 on the card 5, which is convenient for welding with the terminal 10 and minimizes the exposure of the copper wire 14.At the same time, it can also protect the copper wire 14 from being damaged and broken when turning a corner, thereby facilitating the rapid installation of the current transformer on the circuit board.

Claims

1. A current transformer with detachable inlet and outlet terminals, characterized in that: The invention comprises a frame (1) and a card (5), wherein the frame (1) is provided with an arc-shaped adjustment groove (2) on the left side of the top, and the right half of the adjustment groove (2) is provided with a disengagement surface (3) inclined upward to the right, the frame (1) is provided with a cylindrical fitting groove (4) on the right side of the top, and the fitting groove (4) has a depth greater than the depth of the adjustment groove (2), the card (5) is attached to the left side of the frame (1), and a slot (6) is provided at the bottom of the right side of the card (5), and the size of the slot (6) is matched with the shape of the frame (1), and a docking mechanism (7) is arranged at the top of the right side of the card (5), and the docking mechanism (7) comprises a sleeve (701), a plunger (702) and a receiving groove (703) A plunger (702) is fixedly installed inside the top of the sleeve (701), and receiving grooves (703) are symmetrically opened on the front and rear end surfaces of the plunger (702), and the depth of the receiving grooves (703) is less than the thickness of the plunger (702). The docking mechanism (7) also includes a through groove (704) and a slide rod (705). The left and right end surfaces of the plunger (702) are symmetrically opened with through grooves (704), and the through grooves (704) penetrate the plunger (702) and are connected with the inner cavity at the bottom of the sleeve (701). A slide rod (705) is slidably installed inside the plunger (702). The docking mechanism (7) also includes a cross bar (706) and a sleeve spring (707). and a boss (708); a cross bar (706) is integrally fixedly installed on the top of the slide bar (705), and the shapes of the cross bar (706) are respectively matched with the receiving groove (703) and the through groove (704); a sleeve spring (707) is sleeved on the bottom of the slide bar (705), and the slide bar (705) is elastically connected to the plunger (702) through the sleeve spring (707); a boss (708) is fixedly connected to the bottom end face of the slide bar (705), and the bottom end face of the boss (708) is arc-shaped; a wire outlet groove (8) is opened on the top left side of the card (5), and a spring sheet (9) is attached to the top of the wire outlet groove (8), and a wiring terminal (10) is arranged inside the spring sheet (9); and The top of the connection terminal (10) is electrically connected to a pin (11), and the connection point between the connection terminal (10) and the pin (11) is perpendicular to each other to form an L-shaped structure. A disassembly mechanism (12) is provided in the middle of the card (5), and the disassembly mechanism (12) comprises a cavity (1201), a right longitudinal groove (1202), a screw rod (1203) and a right inclined surface (1204). The bottom of the cavity (1201) is provided with a right longitudinal groove (1202), and the cavity (1201) is provided in the middle of the front of the card (5). The screw rod (1203) is meshedly installed inside the right longitudinal groove (1202), and the bottom of the screw rod (1203) is provided with a right inclined surface (1204) inclined to the lower right.

2. A current transformer with detachable inlet and outlet terminals according to claim 1, characterized in that: The disassembly and assembly mechanism (12) further comprises a transverse groove (1205) and a sliding roller (1206); the transverse groove (1205) is provided on the left side of the bottom of the right longitudinal groove (1202); and the sliding roller (1206) is slidably installed inside the transverse groove (1205); and the screw rod (1203) is transmission-connected to the sliding roller (1206) via the right inclined surface (1204).

3. A current transformer with detachable inlet and outlet terminals according to claim 2, characterized in that: The disassembly and assembly mechanism (12) further comprises a left longitudinal groove (1207) and a push rod (1208); the left longitudinal groove (1207) is provided at the top of one end of the transverse groove (1205) away from the right longitudinal groove (1202); and the push rod (1208) is slidably mounted inside the left longitudinal groove (1207); the push rod (1208) is elastically connected to the connection terminal (10) via a spring sheet (9).

4. A current transformer with detachable inlet and outlet terminals according to claim 3, characterized in that: The disassembly and assembly mechanism (12) further comprises a left inclined surface (1209) and a compression spring (1210); the bottom of the push rod (1208) is provided with a left inclined surface (1209) inclined downward to the left; the sliding roller (1206) is transmission-connected to the push rod (1208) via the left inclined surface (1209); the top of the push rod (1208) is provided with a compression spring (1210); and the push rod (1208) is elastically connected to the card (5) via the compression spring (1210).

5. A current transformer with detachable inlet and outlet terminals according to claim 1, characterized in that: A cable slot (13) is provided at the middle of the top of the card (5), and copper wires (14) are arranged at the bottom of the cable slot (13). A cable management mechanism (15) is attached to the right end surface of the cable slot (13), and the cable management mechanism (15) comprises a column (1501), a connecting plate (1502) and a holding slot (1503). A connecting plate (1502) is fixedly installed on the left side of the top of the column (1501), and holding slots (1503) are symmetrically provided on both sides of the middle of the connecting plate (1502), and the depth of the holding slot (1503) is less than the width of the connecting plate (1502).

6. A current transformer with detachable inlet and outlet terminals according to claim 5, characterized in that: The cable management mechanism (15) further comprises a spring (1504), a pressure plate (1505) and a grip (1506), wherein the springs (1504) are connected to both sides of the bottom of the connecting plate (1502), and the end of the spring (1504) away from the connecting plate (1502) is elastically connected to the pressure plate (1505), the pressure plate (1505) is slidably mounted on the left side of the column (1501), and the grip (1506) is fixedly mounted on the top of the middle of the pressure plate (1505), and the grip (1506) is located directly below the opening position of the holding groove (1503).

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