Overlapped current transformer iron core

Abstract

The utility model discloses a laminated current transformer iron core, which comprises an iron core mechanism and a reinforcing mechanism, and is characterized in that the iron core mechanism comprises a plurality of thin sheets, two through holes formed in the tops of the thin sheets, wedging blocks positioned at the bottoms of the through holes and connected with the thin sheets, and the reinforcing mechanism, the reinforcing mechanism comprises a plurality of shallow grooves formed in the tops of the sheets and cushion blocks arranged at the bottoms of the shallow grooves and connected with the sheets. In the utility model, when the sheet is split, an external tool is inserted into the notch close to the wedging block and then goes deep along the cambered surface, so that the wedging block is separated from the through hole, then the position of the sheet is upwarped, and the upwarped sheet drives the cushion block to be separated from the shallow slot because the cushion block is not far away from the wedging block, and then the sheet is split according to the same steps. The method has the advantages that the steps are simple, and the splitting efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer cores, in particular to a laminated current transformer core. Background Art

[0002] Silicon steel sheet, also known as electrical silicon steel sheet, is a soft magnetic alloy of ferrosilicon with an extremely low carbon content, typically containing 0.5% to 4.5% silicon. It is produced through hot and cold rolling. Its thickness is generally less than 1 mm, hence the name "sheet." The addition of silicon increases the resistivity and maximum magnetic permeability of iron, while reducing coercivity, core loss (iron loss), and magnetic efficiency. It is primarily used to make cores for various transformers, motors, and generators.

[0003] Application number CN201920370951.6 relates to a laminated column sheet for an iron core, belonging to the field of iron core technology. It comprises a number of column sheet bodies. This application punches two positioning holes on the column sheet body, which play a positioning and guiding role during the stamping process, so that the column sheet body can be arranged neatly and step according to the required pitch; by utilizing the cooperation of the protrusions and grooves on the column sheet body, it can be quickly and neatly stacked into a whole. When this application is used in practice, since there are many combinations of protrusions and grooves and they are evenly distributed, the two adjacent column sheet bodies are firmly superimposed, but this also causes the problem of difficulty in splitting. When splitting, it is necessary to separate groups of protrusions and grooves, otherwise it will not be completed. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A laminated current transformer core includes a core mechanism and a reinforcement mechanism. The core mechanism includes multiple thin sheets, two through-holes opened at the top of the thin sheets, and a fitting block located at the bottom of the through-holes and connected to the thin sheets. Two adjacent thin sheets are affixed to each other. The reinforcement mechanism includes multiple shallow grooves opened at the top of the thin sheets and a pad located at the bottom of the shallow grooves and connected to the thin sheets.

[0007] By adopting the above technical solution, when splitting the thin sheet, an external tool is used to insert into the notch near the fitting block, and then go deeper along the arc surface to separate the fitting block from the through-opening. Then the thin sheet is tilted at this position. Then, because the pad is not far from the fitting block, the tilted thin sheet will separate from the shallow groove with the pad. Then, follow the same steps to complete the splitting of another fitting block and the through-opening. The steps are simple and the splitting is efficient.

[0008] In a preferred example, the present invention can be further configured as follows: a plurality of notches are provided on the outer edge of the sheet, and the two through openings are respectively located inside the two notches.

[0009] In a preferred example, the present invention can be further configured as follows: a long side arc surface is provided inside the notch.

[0010] In a preferred example, the present invention can be further configured as follows: the thickness of the fitting block is equal to the height of the through-opening, and the fitting block and the through-opening are movably plugged into each other.

[0011] In a preferred example, the present invention can be further configured as follows: a plurality of shallow grooves are arranged in groups of two, and are set as two groups, and the two shallow grooves in each group are arranged in an outer octave shape and are vertically symmetrical about the through opening.

[0012] In a preferred example, the present invention can be further configured as follows: the depth of the shallow groove is half of the height of the through opening, and the pad is movably buckled with the shallow groove.

[0013] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0014] 1. In the utility model, when splitting the thin sheet, an external tool is used to insert into the notch near the fitting block, and then go deeper along the arc surface to separate the fitting block from the through-hole. Then the thin sheet is tilted at this position. Then, because the pad is not far from the fitting block, the tilted thin sheet will separate from the shallow groove with the pad. Then, according to the same steps, the splitting of another fitting block and the through-hole is completed. The steps are simple and the splitting is efficient.

[0015] 2. In the utility model, a plurality of thin sheets are stacked, and then the fitting block is inserted into the through-hole, and the pad is embedded in the shallow groove, so that two adjacent thin sheets are firmly connected, with a simple structure and a firm stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the iron core mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the reinforcement mechanism of the present invention.

[0019] Reference numerals:

[0020] 100, iron core mechanism; 110, sheet; 120, through-hole; 130, fitting block;

[0021] 200, reinforcement mechanism; 210, shallow groove; 220, spacer;

[0022] 300, gap;

[0023] 400. Curved surface. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0025] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0026] A laminated current transformer core provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0027] Example 1:

[0028] Combine Figure 1-3 As shown, the present invention provides a laminated current transformer core, including a core structure 100 and a reinforcement structure 200. The core structure 100 includes a plurality of thin sheets 110, two through-holes 120 opened at the top of the thin sheets 110, and a fitting block 130 located at the bottom of the through-holes 120 and connected to the thin sheets 110. Two adjacent thin sheets 110 are bonded to each other.

[0029] The reinforcement mechanism 200 includes a plurality of shallow grooves 210 formed on the top of the sheet 110 and a pad 220 disposed at the bottom of the shallow grooves 210 and connected to the sheet 110 .

[0030] Furthermore, the thickness of the fitting block 130 is equal to the height of the through opening 120 , and the fitting block 130 and the through opening 120 are movably plugged in. This size design ensures that the two thin sheets 110 can be seamlessly connected.

[0031] Furthermore, the plurality of shallow grooves 210 are arranged in pairs, and are set into two groups. The two shallow grooves 210 in each group are arranged in an outward-octagonal pattern and are vertically symmetrical about the through-opening 120. The layout design of the plurality of shallow grooves 210 makes the thin sheets 110 more firmly stacked.

[0032] Furthermore, the groove depth of the shallow groove 210 is half of the height of the through opening 120 , and the pad 220 is movably connected to the shallow groove 210 . With this size design, the pad 220 and the shallow groove 210 are easy to separate.

[0033] Example 2:

[0034] Combine Figure 1-3 As shown, based on the first embodiment, a plurality of notches 300 are provided on the outer edge of the sheet 110 , and the two through openings 120 are respectively located inside the two notches 300 . The notches 300 are provided to facilitate separation of two adjacent sheets 110 .

[0035] Example 3:

[0036] Combine Figure 1 and Figure 3 As shown, in the above embodiment, a long side arc surface 400 is provided inside the notch 300 . The arc surface 400 facilitates the insertion of an external tool between two adjacent sheets 110 .

[0037] The working principle and usage process of the present invention are as follows: in the initial state, multiple thin sheets 110 are overlapped, and then the fitting block 130 is inserted into the through-opening 120, and the pad 220 is embedded in the shallow groove 210, so that the two adjacent thin sheets 110 are firmly connected. Then, when splitting the thin sheets 110, an external tool is used to insert it into the notch 300 close to the fitting block 130, and then go deeper along the arc surface 400 to separate the fitting block 130 from the through-opening 120. Then, the thin sheet 110 at this position is tilted up, and then because the pad 220 is not far from the fitting block 130, the tilted thin sheet 110 will carry the pad 220 with it to separate from the shallow groove 210. Then, follow the same steps to complete the splitting of another fitting block 130 and the through-opening 120. The steps are simple and the splitting is efficient.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A laminated current transformer core, characterized in that: include: An iron core mechanism (100) comprises a plurality of thin sheets (110), two through-holes (120) opened at the top of the thin sheets (110), and a fitting block (130) located at the bottom of the through-holes (120) and connected to the thin sheets (110), wherein two adjacent thin sheets (110) are fitted together; A reinforcing mechanism (200) includes a plurality of shallow grooves (210) opened on the top of the thin sheet (110), and a pad (220) provided at the bottom of the shallow grooves (210) and connected to the thin sheet (110).

2. The laminated current transformer core according to claim 1, characterized in that: A plurality of notches (300) are provided on the outer edge of the thin sheet (110), and the two through openings (120) are respectively located inside the two notches (300).

3. The laminated current transformer core according to claim 2, characterized in that: A long side arc surface (400) is provided inside the notch (300).

4. The laminated current transformer core according to claim 1, characterized in that: The thickness of the fitting block (130) is equal to the height of the through opening (120), and the fitting block (130) and the through opening (120) are movably plugged in.

5. The laminated current transformer core according to claim 1, characterized in that: The plurality of shallow grooves (210) are arranged in pairs, and are arranged in two groups. The two shallow grooves (210) in each group are arranged in an outward-facing octave pattern and are vertically symmetrical about the through opening (120).

6. The laminated current transformer core according to claim 1, characterized in that: The depth of the shallow groove (210) is half the height of the through opening (120), and the pad (220) is movably buckled with the shallow groove (210).

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