A transformer structure that is easy to use

Abstract

This utility model discloses a user-friendly current transformer structure, including an outer shell and an iron core. The outer shell includes a main shell and a movable shell that moves relative to the main shell. The main shell has a notch for cable insertion, and the movable shell has a stop that matches the notch. The main shell and the movable shell are fastened together to form a cable slot for the cable under test. The main shell also has a locking plate that rotates relative to the cable slot to hold the cable under test through the cable slot. The current transformer outer shell structure of this utility model is designed to be openable and closable. By pressing the elastic buckle of the outer shell, the locking mechanism can be released, and the sliding movable part can quickly open and close the current transformer, facilitating cable insertion for use. Furthermore, the current transformer outer shell in this embodiment also has a locking plate. During installation and use, the locking plate can provide two-stage positioning hooks for the cable located in the cable slot, ensuring stable installation during use.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, and specifically to a current transformer structure that is easy to use. Background Technology

[0002] In power systems, measuring instruments are typically installed on cables and busbars to better monitor the operating status of electrical equipment. Instrument transformers, a general term encompassing both current transformers and voltage transformers, are instruments that convert a large primary current into a small secondary current based on the principle of electromagnetic induction. An instrument transformer mainly consists of a closed iron core and windings. Its primary winding has a small number of turns and is connected in series with the line containing the current to be measured. Due to the operating environment of instrument transformers, to reduce the impact of power equipment on their operation, they are generally protected by a protective casing. In current technology, most instrument transformers typically use a ring-shaped iron core placed inside a casing, with the two casings assembled. During assembly, the casings need to be aligned and secured with bolts. Therefore, common instrument transformers often have a wire clamp slot in the center of the ring shape, requiring the cable end to pass through the slot for use, making installation and use inconvenient. Utility Model Content

[0003] In view of the prior art, the purpose of this utility model is to provide a current transformer housing structure that facilitates the installation and use of the current transformer, and the setting of the clamp plate reduces the problem of unstable installation caused by different cable sizes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an easy-to-use transformer structure, including an outer shell and an iron core. The outer shell includes a main shell and a movable shell that moves relative to the main shell. The main shell is provided with a notch for cable insertion. The movable shell is provided with a stop that matches the notch. The main shell and the movable shell are fastened together to form a cable clamping slot for the cable to be tested. The main shell is also provided with a clamping plate. The clamping plate rotates relative to the cable clamping slot to clamp the cable to be tested that passes through the cable clamping slot.

[0005] As a further provision of the above scheme, a C-shaped core and a movable core are respectively provided inside the main shell and the movable shell, and the C-shaped core and the movable core constitute an annular iron core.

[0006] As a further provision of the above scheme, the main housing is provided with a sliding column and a limiting column, and the movable housing is provided with a sliding groove that matches the sliding column and a limiting groove that matches the limiting column.

[0007] As a further feature of the above scheme, the main housing is also provided with a buckle groove, and the movable housing is also provided with an elastic buckle plate and a U-shaped clearance groove for the elastic buckle plate to swing elastically.

[0008] As a further feature of the above solution, the outer shell is also provided with a hanging groove and a hanging plate. The hanging groove includes a slot, and the hanging plate is provided with an insert plate, a hanging ring, and a wedge plate.

[0009] As a further feature of the above solution, the main housing is provided with abutting teeth relative to the card plate, the card plate is provided with abutting teeth, the card plate is hinged to the main housing, and a hook groove is provided on the side of the card plate facing the card slot.

[0010] Beneficial effects: The current transformer housing structure of this utility model is designed with an openable and closable structure. By pressing the elastic buckle plate of the housing to release the lock, the sliding movable part can quickly open and close the current transformer, making it convenient for the cable to be inserted for use. Furthermore, a retaining plate is also provided on the current transformer housing in this embodiment. During installation and use, the retaining plate can continue to position and hook the cable located in the cable slot in two stages, keeping it stable during use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the current transformer structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the current transformer of this utility model in the open state.

[0013] Figure 3 This is a schematic diagram of the component structure of the current transformer in this embodiment.

[0014] Reference numerals: 1. Outer shell; 11. Main shell; 12. Movable shell; 13. Notch; 14. Stop; 15. Wire clip slot; 16. Clip plate; 17. Abutting tooth; 18. Abutting tooth; 19. Hook slot; 2. Iron core; 21. C-shaped core; 22. Movable core; 31. Sliding column; 32. Limiting column; 33. Sliding groove; 34. Limiting groove; 35. Buckle groove; 36. Elastic buckle plate; 37. U-shaped clearance groove; 41. Hanging groove; 42. Hanging plate; 43. Slot; 44. Insertion plate part; 45. Hanging ring; 46. Wedge plate. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0016] like Figure 1-3The present invention discloses a user-friendly transformer structure, comprising an outer casing 1 and an iron core 2. The outer casing 1 includes a main casing 11 and a movable casing 12 that moves relative to the main casing 11. The main casing 11 is provided with a notch 13 for cable insertion. The movable casing 12 is provided with a stop 14 that matches the notch 13. The main casing 11 and the movable casing 12 are fastened together to form a cable clamping groove 15 for the cable to be tested. The main casing 11 is also provided with a clamping plate 16, which rotates relative to the cable clamping groove 15 to clamp the cable to be tested passing through the cable clamping groove 15.

[0017] As a further provision of the above scheme, a C-shaped core 21 and a movable core 22 are respectively provided inside the main shell 11 and the movable shell 12, and the C-shaped core 21 and the movable core 22 constitute an annular iron core 2.

[0018] As a further provision of the above scheme, the main housing 11 is provided with a sliding column 31 and a limiting column 32, and the movable housing 12 is provided with a sliding groove 33 that matches the sliding column 31 and a limiting groove 34 that matches the limiting column 32.

[0019] As a further provision of the above scheme, the main housing 11 is also provided with a buckle groove 35, and the movable housing 12 is also provided with an elastic buckle plate 36 and a U-shaped relief groove 37 for the elastic buckle plate 36 to swing elastically.

[0020] As a further provision of the above scheme, the outer shell 1 is also provided with a hanging groove 41 and a hanging plate 42. The hanging groove 41 includes a slot 43, and the hanging plate 42 is provided with an insert plate part 44, a hanging ring 45 and a wedge plate 46.

[0021] As a further provision of the above scheme, the main housing 11 is provided with abutting teeth 17 relative to the card plate 16, and the card plate 16 is provided with abutting teeth 18. The card plate 16 is hinged to the main housing 11, and a hook groove 19 is also provided on the side of it facing the line card groove 15.

[0022] refer to Figure 1 and Figure 2The current transformer structure of this utility model, as shown, allows the movable shell 12, carrying the movable core 22, to separate and move relative to the main shell 11 and the C-shaped core 21. This opens a notch in the annular iron core 2, facilitating the insertion of the cable and the installation of the current transformer. In use, the current transformer of this embodiment is activated by pressing the elastic buckle 36 on the movable shell 12, causing it to swing inward toward the U-shaped relief groove 37. Simultaneously, the buckle 36 is released from its snap-fit ​​with the buckle groove 35 on the inner side of the main shell 11, allowing the movable shell 12 to move relative to the main shell 11. Furthermore, by moving the movable shell 12 downward based on the cooperation of the sliding groove 33 and the sliding column 31, the notch groove 13 is opened, and the wire clamping groove 15 is opened, allowing the cable to be tested to be inserted into the wire clamping groove 15. Then, the movable shell 12 is pushed back to its original position, and the assembly of the outer shell 1 is completed based on the snap-fit ​​of the elastic buckle 36 into the buckle groove 35, so that the iron core 2 is fastened to the circumference of the cable to form an annular structure.

[0023] Furthermore, in this embodiment, the main housing 11 of the transformer housing 1 is provided with abutting teeth 17 relative to the locking plate 16, and abutting teeth 18 are provided on the locking plate 16 which swings relative to the main housing 11. The abutting teeth 18 switch between several abutting teeth 17. Based on the elasticity of the locking plate 16 itself, the pressure on one side of the abutting teeth 18 can easily switch between the abutting teeth 17 during adjustment, while on the other side, the locking groove 19 is stuck on the cable and the reaction force makes it difficult to push the locking plate 16 to swing. Thus, the locking plate 16 can easily adjust the diameter of the wire clamping groove 15 through the abutting teeth 18 and the abutting teeth 17, and clamp the cable to be tested in the wire clamping groove 15, thereby improving the stability of use.

[0024] As a further provision of the above solution, the outer casing 1 is also provided with a hanging groove 41 and a hanging plate 42. The hanging groove 41 includes a slot 43, and the hanging plate 42 is provided with an insertion plate portion 44, a hanging ring 45, and a wedge plate 46. Further as described above, in this embodiment, the outer casing 1 is provided with a hanging plate 42 that is locked in the hanging groove 41. The hanging ring 45 on the hanging plate 42 facilitates the position restriction of the current transformer casing, preventing the current transformer from moving too much relative to the cable when the clamping plate 16 is not clamped tightly, for example, when installed at a high place. As described above, through the structural design on the current transformer casing of this embodiment, the casing facilitates the installation and use of the current transformer, and improves its holding and stability during use.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A user-friendly transformer structure, comprising an outer casing (1) and an iron core (2), characterized in that: The outer casing (1) includes a main casing (11) and a movable casing (12) that moves relative to the main casing (11). The main casing (11) is provided with a notch (13) for cable insertion. The movable casing (12) is provided with a stop (14) that matches the notch (13). The main casing (11) and the movable casing (12) are fastened together to form a cable slot (15) for the cable to be tested. The main casing (11) is also provided with a clamping plate (16). The clamping plate (16) rotates relative to the cable slot (15) to clamp the cable to be tested that passes through the cable slot (15).

2. The easy-to-use transformer structure according to claim 1, characterized in that: The main housing (11) and the movable housing (12) are respectively provided with a C-shaped core (21) and a movable core (22), which together form an annular iron core (2).

3. The easy-to-use transformer structure according to claim 1, characterized in that: The main housing (11) is provided with a sliding column (31) and a limiting column (32), and the movable housing (12) is provided with a sliding groove (33) that matches the sliding column (31) and a limiting groove (34) that matches the limiting column (32).

4. The easy-to-use transformer structure according to claim 3, characterized in that: The main housing (11) is also provided with a buckle groove (35), and the movable housing (12) is also provided with an elastic buckle plate (36) and a U-shaped relief groove (37) for the elastic buckle plate (36) to swing elastically.

5. The easy-to-use transformer structure according to claim 1, characterized in that: The outer shell (1) is also provided with a hanging groove (41) and a hanging plate (42). The hanging groove (41) includes a slot (43), and the hanging plate (42) is provided with an insert plate (44), a hanging ring (45) and a wedge plate (46).

6. The easy-to-use transformer structure according to claim 1, characterized in that: The main housing (11) is provided with abutting teeth (17) relative to the card plate (16), and the card plate (16) is provided with abutting teeth (18). The card plate (16) is hinged to the main housing (11), and a hook groove (19) is provided on the side of it facing the line card groove (15).

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