Anti-off-line current transformer

Abstract

The utility model relates to the technical field of current transformers, and discloses an anti-off-line current transformer, which comprises a current transformer body, one side of the current transformer body is provided with two wiring terminals, one side of the current transformer body is connected with two groups of L-shaped guide rails through bolts, each group is provided with two mirror images, and the two wiring terminals are connected with the two L-shaped guide rails through bolts. A T-shaped seat is slidably connected between the two L-shaped guide rails, a pressing plate is rotatably connected to one side of the upper surface of the T-shaped seat, a first groove and a second groove are formed in the opposite sides of the T-shaped seat and the pressing plate correspondingly, and a receding groove is formed in one end of the pressing plate. According to the utility model, the wire is limited through the T-shaped seat and the pressing plate rotatably connected to the T-shaped seat, and after the pressing plate is fixed through the fixing screw, the wire can be compressed, so that the wiring terminal is prevented from being stressed when the wire is stressed, and the wiring part of the wire is prevented from being separated from the wiring terminal.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, and more specifically to a current transformer that prevents wire disconnection. Background Technology

[0002] Current transformers, as key measurement and protection devices in power systems, are widely used in current monitoring, energy metering, and relay protection. Their core function is to convert large primary currents into small secondary currents proportionally through the principle of electromagnetic induction, providing standardized input signals for subsequent equipment.

[0003] A search revealed Chinese patent CN222015226U, which discloses a current transformer. This device uses the rebound force of four springs to drive two connecting plates to move automatically. When the connecting plates move, two sliders fixed on one side of the connecting plates slide on the inner walls of two grooves, thereby making the connecting plates more stable during movement. However, the external wires of this device are directly connected to the terminals. When the external wires are subjected to tension, such as during maintenance or installation of the current transformer, the wires may be accidentally touched, causing them to pull directly on the terminals and potentially detach from them, thus affecting the normal use of the current transformer. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a current transformer that prevents wire disconnection, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a current transformer for preventing wire disconnection, comprising a current transformer body, two terminals on one side of the current transformer body, two sets of L-shaped guide rails connected to one side of the current transformer body by bolts, each set consisting of two mirror images, a T-shaped seat slidably connected between the two L-shaped guide rails, a pressure plate rotatably connected to one side of the upper surface of the T-shaped seat, groove one and groove two respectively opened on opposite sides of the T-shaped seat and the pressure plate, a clearance groove opened at one end of the pressure plate, a square groove opened on one side of the T-shaped seat, a rotating rod rotatably connected between the inner walls of the two sides of the square groove, a threaded rod fixedly connected to the outer circumference of the rotating rod, and a fixing screw threadedly connected to the outer circumference of the portion of the threaded rod passing through the clearance groove.

[0006] As a further embodiment of this utility model, the T-shaped seat has two symmetrical sliding grooves on one side, and a retaining plate is slidably connected in the sliding groove. Two symmetrical springs are fixedly connected between one side of the retaining plate and the bottom inner wall of the sliding groove. The inner wall of one side of the L-shaped guide rail has a retaining groove that cooperates with the retaining plate.

[0007] As a further embodiment of this utility model, one side of the L-shaped guide rail is provided with a sliding opening for use with a slot, and two mirror-shaped sliders are slidably connected in the sliding opening, with a push plate fixedly connected to one side of each of the two wedge-shaped sliders.

[0008] As a further embodiment of this utility model, both groove one and groove two are fitted with rubber pads with a certain degree of flexibility.

[0009] As a further embodiment of this invention, the two sets of L-shaped guide rails are respectively arranged directly below the two wiring terminals.

[0010] As a further embodiment of this utility model, the length of the sliding opening is greater than the length of the slot, and the wedge surfaces of the two wedge-shaped sliders respectively contact the two ends of the card plate.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model limits the wire by using a T-shaped seat and a pressure plate rotatably connected thereto. After the pressure plate is fixed by fixing screws, the wire can be pressed tightly, thereby preventing the terminal from being stressed when the wire is under force, and thus preventing the wire connection from detaching from the terminal.

[0013] 2. This utility model uses a card plate and a card slot to fix the T-shaped seat after it is slid into the L-shaped guide rail, thereby preventing it from sliding on its own and affecting the fixation of the wire.

[0014] 3. This utility model, with its wedge-shaped slider and push plate, can disengage the card plate from the card slot when the T-shaped seat needs to be removed, thus facilitating the removal of the T-shaped seat. The structure is simple and easy to operate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 For the present utility model Figure 1 A partially enlarged structural diagram.

[0017] Figure 3 This is an enlarged schematic diagram of the fixed structure of this utility model.

[0018] Figure 4 This utility model Figure 2 A partial cross-sectional view of the exploded structure.

[0019] The attached diagram is labeled as follows: 1. Current transformer body; 2. Terminal block; 3. L-shaped guide rail; 4. T-shaped base; 5. Pressure plate; 6. Groove one; 7. Groove two; 8. Square groove; 9. Alternating groove; 10. Rotating rod; 11. Threaded rod; 12. Fixing screw; 13. Rubber pad; 14. Slide groove; 15. Clamping plate; 16. Spring; 17. Clamping slot; 18. Slide opening; 19. Wedge-shaped slider; 20. Push plate. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Reference Figures 1-4 This utility model provides a current transformer for preventing wire disconnection, including a current transformer body 1. Two terminals 2 are provided on one side of the current transformer body 1. Two sets of L-shaped guide rails 3 are bolted to one side of the current transformer body 1, each set consisting of two mirror images. The two sets of L-shaped guide rails 3 are respectively positioned directly below the two terminals 2. A T-shaped seat 4 is slidably connected between the two L-shaped guide rails 3. A pressure plate 5 is rotatably connected to one side of the upper surface of the T-shaped seat 4. Grooves 1 6 and 2 7 are respectively formed on opposite sides of the T-shaped seat 4 and the pressure plate 5. A clearance groove 9 is formed at one end of the pressure plate 5. A square groove 8 is formed on one side of the T-shaped seat 4. A rotating rod 10 is rotatably connected between the inner walls of the two sides of the square groove 8. A threaded rod 11 is welded to the outer circumference of the rotating rod 10, and the threaded rod 11 passes through... A fixing screw 12 is threaded onto the outer circumference of part of the recess 9. After fixing one end of the wire to the terminal 2, the pressure plate 5 is rotated to place the wire into the groove 6 on the T-shaped seat 4. Then, the pressure plate 5 is rotated in the opposite direction so that the groove 7 on it is also engaged with the wire. Then, the threaded rod 11 is rotated to embed it into the recess 9. After the threaded rod 11 is embedded in the recess 9, the fixing screw 12 is rotated so that one side of it is in close contact with one side of the pressure plate 5 to fix the wire. The T-shaped seat 4 and the pressure plate 5 rotatably connected to it limit the wire. After the pressure plate 5 is fixed by the fixing screw 12, the wire can be pressed. This prevents the terminal 2 from being stressed when the wire is under force, and prevents the wire connection from detaching from the terminal 2.

[0022] In this invention, two symmetrical grooves 14 are provided on one side of the T-shaped base 4. A retaining plate 15 is slidably connected in the groove 14. Two symmetrical springs 16 are welded between one side of the retaining plate 15 and the bottom inner wall of the groove 14. A retaining groove 17 that cooperates with the retaining plate 15 is provided on the inner wall of one side of the L-shaped guide rail 3. When it is necessary to fix the wire, the T-shaped base 4 is first slid into the two L-shaped guide rails 3. During the sliding process, the retaining plate 15 is pressed to slide into the groove 14. At this time, the spring 16 is compressed. When the retaining plate 15 slides to the retaining groove 17, the spring 16 releases its elastic force and pushes the retaining plate 15 to slide in the opposite direction along the groove 14, so that the retaining plate 15 is locked into the retaining groove 17. Through the cooperation of the retaining plate 15 and the retaining groove 17, the T-shaped base 4 can be fixed after it is slid into the L-shaped guide rail 3, thereby preventing it from sliding on its own and affecting the fixation of the wire.

[0023] In this utility model, a sliding opening 18 is provided on one side of the L-shaped guide rail 3 to cooperate with the slot 17. The length of the sliding opening 18 is greater than the length of the slot 17. The wedge surfaces of the two wedge-shaped sliders 19 are in contact with the two ends of the plate 15 respectively. Two mirror-shaped wedge-shaped sliders 19 are slidably connected in the sliding opening 18. Push plates 20 are fixedly connected to one side of each of the two wedge-shaped sliders 19 by bolts. When it is necessary to remove the T-shaped seat 4, the two sets of push plates 20 are squeezed at the same time to make the wedge-shaped sliders 19 on them move closer to each other, so that their wedge surfaces press the plate 15 and move it into the sliding groove 14. When the plate 15 is completely disengaged from the slot 17, the T-shaped seat 4 can be slid out of the L-shaped guide rail 3. With the provided wedge-shaped sliders 19 and push plates 20, when it is necessary to remove the T-shaped seat 4, the plate 15 can be disengaged from the slot 17, thus making it easy to remove the T-shaped seat 4. The structure is simple and easy to operate.

[0024] In this invention, both groove 6 and groove 7 are fitted with rubber pads 13 that have a certain degree of flexibility. The rubber pads 13 can fix the wires and protect them at the same time, preventing damage to the wires.

[0025] The use of this utility model involves the following steps:

[0026] S1: When it is necessary to fix the wire, first slide the T-shaped seat 4 between the two L-shaped guide rails 3. During the sliding process, press the card plate 15 to make it slide into the slide groove 14. At this time, the spring 16 is compressed. When the card plate 15 slides to the slot 17, the spring 16 releases the elastic force and pushes the card plate 15 to slide in the opposite direction along the slide groove 14, so that the card plate 15 is locked into the slot 17.

[0027] S2: After fixing one end of the wire to the terminal 2, rotate the pressure plate 5 to place the wire into the groove 6 on the T-shaped seat 4. Then rotate the pressure plate 5 in the opposite direction so that the groove 7 on it is also locked onto the wire. Then rotate the threaded rod 11 to insert it into the clearance groove 9. After the threaded rod 11 is inserted into the clearance groove 9, rotate the fixing screw 12 so that one side of it is in close contact with one side of the pressure plate 5 to fix the wire.

[0028] S3: When it is necessary to remove the T-shaped seat 4, pinch the two sets of push plates 20 at the same time so that the wedge-shaped sliders 19 on them come closer to each other, so that the wedge-shaped surfaces press the card plate 15 and move it into the slide groove 14. When the card plate 15 and the card groove 17 are completely disengaged, the T-shaped seat 4 can be slid out of the L-shaped guide rail 3.

[0029] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A current transformer for preventing wire disconnection, comprising a current transformer body (1), wherein two terminals (2) are provided on one side of the current transformer body (1), characterized in that: Two sets of L-shaped guide rails (3) are bolted to one side of the current transformer body (1), and each set consists of two mirror images. A T-shaped seat (4) is slidably connected between the two L-shaped guide rails (3). A pressure plate (5) is rotatably connected to one side of the upper surface of the T-shaped seat (4). Grooves 1 (6) and 2 (7) are respectively opened on the opposite sides of the T-shaped seat (4) and the pressure plate (5). A clearance groove (9) is opened at one end of the pressure plate (5). A square groove (8) is opened on one side of the T-shaped seat (4). A rotating rod (10) is rotatably connected between the inner walls of the two sides of the square groove (8). A threaded rod (11) is fixedly connected to the outer circumference of the rotating rod (10). A fixing screw (12) is threadedly connected to the outer circumference of the part of the threaded rod (11) that passes through the clearance groove (9).

2. The current transformer for preventing wire disconnection according to claim 1, characterized in that: The T-shaped seat (4) has two symmetrical sliding grooves (14) on one side. A retaining plate (15) is slidably connected in the sliding groove (14). Two symmetrical springs (16) are fixedly connected between one side of the retaining plate (15) and the bottom inner wall of the sliding groove (14). A retaining groove (17) that cooperates with the retaining plate (15) is opened on one side inner wall of the L-shaped guide rail (3).

3. A current transformer for preventing wire disconnection according to claim 2, characterized in that: The L-shaped guide rail (3) has a sliding opening (18) on one side that is used in conjunction with the slot (17). Two wedge-shaped sliders (19) that are mirror images are slidably connected in the sliding opening (18). A push plate (20) is fixedly connected to one side of each of the two wedge-shaped sliders (19).

4. A current transformer for preventing wire disconnection according to claim 1, characterized in that: Both groove one (6) and groove two (7) are bonded with rubber pads (13) with a certain degree of flexibility.

5. A current transformer for preventing wire disconnection according to claim 1, characterized in that: The two sets of L-shaped guide rails (3) are respectively located directly below the two terminals (2).

6. A current transformer for preventing wire disconnection according to claim 3, characterized in that: The length of the slide (18) is greater than the length of the slot (17), and the wedge surfaces of the two wedge-shaped sliders (19) are in contact with the two ends of the plate (15).

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