Special-shaped split core type current transformer capable of preventing mistaken opening

Abstract

The utility model relates to the technical field of current transformers, and discloses a mistaken opening prevention special-shaped split core type current transformer which comprises a special-shaped split core type current transformer body, a first rotating handle is arranged at the end of the special-shaped split core type current transformer body, and a second rotating handle is arranged on the side edge of the first rotating handle. According to the special-shaped split core type current transformer, the first rotating handle and the second rotating handle are provided with the mistaken opening prevention fixing assemblies, driving screw rods in the mistaken opening prevention fixing assemblies can push abutting blocks through rotation, the abutting blocks can abut against the first rotating handle and the second rotating handle, and therefore the first rotating handle and the second rotating handle are fixed, and the mistaken opening prevention fixing assemblies are fixed to the first rotating handle and the second rotating handle. The special-shaped split-core type current transformer main body is not in a semi-open or loose state even if the special-shaped split-core type current transformer main body is manually dragged or the current transformer vibrates in a wire clamping process, so that the wire clamping stability of the special-shaped split-core type current transformer main body is ensured, and a user can carry out a line test more favorably.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a special-shaped clamp-on current transformer which can prevent mis-opening. Background Art

[0002] The current transformer consists of a closed iron core and a coil. It is an instrument that converts a large primary current into a small secondary current based on the principle of electromagnetic induction to measure current.

[0003] After searching, the authorized Chinese patent announcement number CN 220984284 U discloses a special-shaped clamp-on current transformer that prevents accidental opening. Its shell includes a left shell and a right shell. The lower parts of the left shell and the right shell are rotatably connected by hole-axis cooperation. The upper parts of the left shell and the right shell are rotatably opened and closed by the hole-axis cooperation. The functional part includes an iron core and a stop assembly. The iron core is located on the upper inner side of the shell, and the stop assembly is movably connected to the lower end of the shell. By adopting a pointed-beak-type upper setting, the clamp-on current transformer can be inserted into a limited space. At the same time, the setting of the stop assembly can ensure that the line can be locked by the stop assembly after being stuck, thereby avoiding the situation where the clamp-on current transformer is opened due to falling off caused by vibration.

[0004] The special-shaped clamp-on current transformer in the above-mentioned patent still has certain shortcomings. In actual use, the existing special-shaped clamp-on current transformer lacks a corresponding anti-misopening mechanism. Therefore, when using the special-shaped clamp-on current transformer for line clamping testing, it is often easy to cause the special-shaped clamp-on current transformer to be in a semi-open or loose state due to unintentional human pulling of the connecting wire or vibration of the current transformer itself, which is not conducive to users to carry out line testing. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a special-shaped clamp-on current transformer with anti-misopening function, which solves the problem that the existing special-shaped clamp-on current transformer lacks a corresponding anti-misopening mechanism in actual use. As a result, when the special-shaped clamp-on current transformer is used for line clamping testing, it is often easy to cause the special-shaped clamp-on current transformer to be in a semi-open or loose state due to unintentional human pulling of the connecting wire or vibration of the current transformer itself, which is not conducive to users to carry out line testing.

[0006] The utility model provides the following technical solution: a special-shaped clamp-on current transformer with an anti-misoperation function, comprising a special-shaped clamp-on current transformer body, a first rotating handle being provided at the end of the special-shaped clamp-on current transformer body, a second rotating handle being provided on the side of the first rotating handle, and an anti-misoperation fixing assembly for preventing misoperation and fixing the special-shaped clamp-on current transformer body being provided on the side of the special-shaped clamp-on current transformer body;

[0007] The anti-misopening fixing component includes a side interference slot provided on the side of the end portion of the second rotating handle, a interference rod is slidably inserted into the end portion of the second rotating handle, the bottom end of the interference rod extends into the side interference slot, a interference spring is sleeved on the interference rod, one end of the interference spring is connected to the interference rod, and the other end of the interference spring is connected to the second rotating handle, a retraction groove is provided on the side of the end portion of the first rotating handle, a limiting thread sleeve is provided on the side of the first rotating handle, a drive screw is inserted through the inner thread of the limiting thread sleeve, the end portion of the drive screw passes through the retraction groove, a interference block is provided at the end portion of the drive screw, and a fixed socket is provided on the interference block.

[0008] Preferred technical solution 1: The side of the interference block is rotatably connected to the end of the driving screw through a rotating sleeve.

[0009] Preferred technical solution 2: Two limiting rods are symmetrically provided on both sides of the interference block, and the ends of the limiting rods pass through the first rotating handle.

[0010] Preferred technical solution three: The end of the driving screw is provided with a connecting block for easy rotation.

[0011] This solution can make it more convenient for users to rotate the drive screw.

[0012] Preferred technical solution four: the diameter of the interference block is smaller than the inner diameter of the side interference slot and the retraction groove.

[0013] This solution enables the interference block to be inserted into the side interference slot more quickly and conveniently, or retracted into the retraction groove.

[0014] Preferred technical solution five: the opening diameter of the fixed socket is the same as the diameter of the interfering rod.

[0015] This solution enables the interference rod to be inserted and fixed into the fixing hole inserted into the side interference slot.

[0016] Compared with the prior art, the present invention provides a special-shaped clamp-on current transformer that prevents mis-opening, which has the following beneficial effects:

[0017] (1) The utility model provides an anti-misoperational opening fixing assembly on the first rotating handle and the second rotating handle, wherein the driving screw in the anti-misoperational opening fixing assembly can push the resistance block by rotating, so that the resistance block is inserted into the side resistance slot, and the resistance plug rod elastically resisted by the resistance spring is inserted into the fixed socket for fixation, so that the expanded state between the first rotating handle and the second rotating handle is fixedly resisted, ensuring the resistance fixation of the first rotating handle and the second rotating handle to the special-shaped clamp-type current transformer body to clamp the line, so that the special-shaped clamp-type current transformer body will not be in a half-open or loose state even if it is dragged by humans or the current transformer itself vibrates during the clamping process, thereby ensuring the line clamping stability of the special-shaped clamp-type current transformer body, which is more conducive to users to carry out line testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure of the middle limit threaded sleeve;

[0020] Figure 3 It is a schematic side view of the structure of the utility model;

[0021] Figure 4 It is a schematic top view of the structure of the present invention.

[0022] In the picture:

[0023] 1. Special-shaped clamp-on current transformer body; 2. First turning handle; 3. Second turning handle; 4. Anti-accidental opening fixing assembly;

[0024] 401. Side interference slot; 402. Interference rod; 403. Interference spring; 404. Retraction groove; 405. Limiting threaded sleeve; 406. Drive screw; 407. Interference block; 408. Fixed socket; 409. Rotating sleeve; 410. Limiting rod. DETAILED DESCRIPTION

[0025] See also Figure 1-4

[0026] Embodiment 1: A special-shaped clamp-on current transformer that prevents accidental opening includes a special-shaped clamp-on current transformer body 1, a first rotating handle 2 is provided at the end of the special-shaped clamp-on current transformer body 1, a second rotating handle 3 is provided on the side of the first rotating handle 2, and an anti-accidental opening fixing component 4 is provided on the side of the special-shaped clamp-on current transformer body 1 for preventing accidental opening.

[0027] The anti-misopening fixing component 4 includes a side interference slot 401 opened on the side of the end of the second rotating handle 3, and a interference rod 402 is slidably inserted into the end of the second rotating handle 3. The bottom end of the interference rod 402 extends into the side interference slot 401, and a interference spring 403 is sleeved on the interference rod 402. One end of the interference spring 403 is connected to the interference rod 402, and the other end of the interference spring 403 is connected to the second rotating handle 3.

[0028] A retraction groove 404 is provided on the side of the end of the first rotating handle 2, and a limiting threaded sleeve 405 is provided on the side of the first rotating handle 2. A driving screw 406 is inserted through the internal thread of the limiting threaded sleeve 405, and the end of the driving screw 406 passes through the retraction groove 404. A resistance block 407 is provided at the end of the driving screw 406, and a fixed socket 408 is provided on the resistance block 407. The side of the resistance block 407 is rotatably connected to the end of the driving screw 406 through a rotating sleeve 409. Two limiting rods 410 are symmetrically provided on both sides of the resistance block 407, and the ends of the limiting rods 410 both pass through the first rotating handle 2.

[0029] Embodiment 2: The difference between this embodiment and embodiment 1 is that a connecting block for facilitating rotation is provided at the end of the driving screw 406 .

[0030] This makes it more convenient for the user to rotate the drive screw 406.

[0031] Embodiment 3: The difference between this embodiment and embodiment 1 is that the diameter of the interference block 407 is smaller than the inner diameters of the side interference slot 401 and the retraction groove 404 .

[0032] This allows the interference block 407 to be inserted into the side interference slot 401 more quickly and conveniently, or retracted into the retraction groove 404 .

[0033] Embodiment 4: The difference between this embodiment and embodiment 1 is that the opening diameter of the fixing hole 408 is the same as the diameter of the interfering rod 402 .

[0034] The interference rod 402 can be inserted and fixed into the fixing hole 408 inserted into the side interference slot 401.

[0035] In this embodiment, since the existing special-shaped clamp-on current transformer lacks a corresponding anti-misopening mechanism in actual use, when using the special-shaped clamp-on current transformer for line jamming testing, it is often easy to cause the special-shaped clamp-on current transformer to be in a semi-open or loose state due to unintentional human pulling of the connecting wire or vibration of the current transformer itself, which is not conducive to users to carry out line testing.

[0036] In summary, in a specific implementation, when the user uses the special-shaped clamp-on current transformer body 1 to test the current in the clamped wire, in order to make the special-shaped clamp-on current transformer body 1 able to clamp the wire more firmly, it is necessary to fix the first rotating handle 2 and the second rotating handle 3 in contact with each other. By providing an anti-misopening fixing component 4 on the side of the special-shaped clamp-on current transformer body 1, the user can rotate the drive screw 406 in the anti-misopening fixing component 4, and the drive screw 406 can be threadedly rotated in the limiting threaded sleeve 405, so that the drive screw 406 can push the contact block 407 whose end is rotatably connected by the rotating sleeve 409, and push the contact block 407 into the side contact slot 401.

[0037] At the same time, when the resistance block 407 is inserted into the side resistance slot 401, the user also needs to pull upward the resistance rod 402 that is slidably inserted in the side resistance slot 401 so that the resistance block 407 can be quickly inserted into the side resistance slot 401. When the resistance block 407 is fully inserted into the side resistance slot 401, the user loosens the resistance rod 402. Since the resistance rod 402 is provided with a resistance spring 403, the resistance rod 402 can be pulled into the fixed socket 408 under the resistance of the resistance spring 403, so that the resistance block 407 is pushed by the driving screw 406.

[0038] The first rotating handle 2 and the second rotating handle 3 can be fixed, so that the special-shaped clamp-type current transformer body 1 at the ends of the first rotating handle 2 and the second rotating handle 3 can continuously and stably hold the line. Even if the special-shaped clamp-type current transformer body 1 is dragged manually or the current transformer itself vibrates during the process of holding the line, it will not be in a half-open or loose state, ensuring the line holding stability of the special-shaped clamp-type current transformer body 1, which is more conducive to users to carry out line testing.

Claims

1. A special-shaped clamp-on current transformer with an anti-misoperation function, comprising a special-shaped clamp-on current transformer body (1), characterized in that: A first rotating handle (2) is provided at the end of the special-shaped clamp-on current transformer body (1), a second rotating handle (3) is provided on the side of the first rotating handle (2), and an anti-misoperation fixing component (4) for preventing misoperation is provided on the side of the special-shaped clamp-on current transformer body (1); The anti-misoperational opening fixing assembly (4) comprises a side contact slot (401) provided on the side of the end of the second rotating handle (3); a contact rod (402) is slidably inserted into the end of the second rotating handle (3); the bottom end of the contact rod (402) extends into the side contact slot (401); a contact spring (403) is sleeved on the contact rod (402); one end of the contact spring (403) is connected to the contact rod (402); the other end of the contact spring (403) is connected to the contact rod (402); The first rotating handle (2) is connected to the second rotating handle (3), the side of the end of the first rotating handle (2) is provided with a retraction groove (404), the side of the first rotating handle (2) is provided with a limiting thread sleeve (405), the internal thread of the limiting thread sleeve (405) is penetrated by a driving screw (406), the end of the driving screw (406) penetrates the retraction groove (404), the end of the driving screw (406) is provided with a resistance block (407), and the resistance block (407) is provided with a fixing socket (408).

2. The anti-misoperation special-shaped clamp-on current transformer according to claim 1, characterized in that: The side of the abutment block (407) is rotatably connected to the end of the driving screw (406) via a rotating sleeve (409).

3. The anti-misoperation special-shaped clamp-on current transformer according to claim 2, characterized in that: Two limiting rods (410) are symmetrically arranged on both sides of the interference block (407), and the ends of the limiting rods (410) both pass through the first rotating handle (2).

4. The anti-misoperation special-shaped clamp-on current transformer according to claim 3, characterized in that: The end of the driving screw (406) is provided with a connecting block for easy rotation.

5. The anti-misoperation special-shaped clamp-on current transformer according to claim 4, characterized in that: The diameter of the interference block (407) is smaller than the inner diameters of the side interference slot (401) and the retraction groove (404).

6. The anti-misoperation special-shaped clamp-on current transformer according to claim 5, characterized in that: The opening diameter of the fixing insertion hole (408) is the same as the diameter of the interference insertion rod (402).

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