Amorphous three-phase common-mode inductor with large current protection

Abstract

The utility model discloses an amorphous three-phase common-mode inductor for heavy current protection, which comprises a magnetic core, windings and a base, and is characterized in that the magnetic core is made of amorphous materials, the windings are independently wound on the magnetic core and are symmetrically arranged, a plurality of pins are arranged on the base, and a protection unit for heavy current protection is arranged on the pins. The magnetic core is fixedly connected with a fixing frame, supporting rods are symmetrically and fixedly arranged on the two sides of the fixing frame, inserting grooves for the supporting rods to be inserted are formed in the base, clamping grooves are formed in the portions, located in the inserting grooves, of the supporting rods, clamping plate grooves are formed in the inner walls of the inserting grooves, clamping plates used for being clamped into the clamping grooves are arranged in the clamping plate grooves, and pull rods used for enabling the clamping plates to slide out of the clamping grooves are arranged on the base. According to the three-phase common mode inductor, the amorphous magnetic core is adopted, magnetic loss is reduced, magnetic saturation density is improved, large-current protection is carried out on the three-phase common mode inductor through the protection unit, and disassembly and assembly of the magnetic core and the base are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of common mode inductors, in particular to an amorphous three-phase common mode inductor for large current protection. Background Art

[0002] Common-mode inductors, also called common-mode chokes, are often used in computer switching power supplies to filter common-mode electromagnetic interference signals. Common common-mode inductors have two sets of winding coils and can withstand limited voltages. They cannot withstand industrial high voltages and cannot be used in industry. Three-phase common-mode inductors have the same functions as ordinary common-mode inductors and can both reduce electromagnetic interference in circuits. However, compared to ordinary common-mode inductors, three-phase common-mode inductors can withstand higher voltages and can withstand the high voltage of industrial electricity. They can be widely used in industry, and three-phase power supply systems are widely used in various fields.

[0003] However, in practical applications, three-phase systems often face the risk of high current shocks, which may cause damage to the inductor or even lead to safety accidents. Although traditional three-phase common-mode inductors have the function of suppressing electromagnetic interference, they often lack effective protection measures in high current environments. Utility Model Content

[0004] The utility model aims to provide an amorphous three-phase common-mode inductor for large current protection to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an amorphous three-phase common-mode inductor for high current protection, comprising a magnetic core, a winding and a base, the magnetic core is made of amorphous material, the winding is three groups independently wound on the magnetic core and symmetrically arranged, the base is provided with a plurality of pins, the pins are provided with a protection unit for high current protection, the magnetic core is fixedly connected to a fixing frame, support rods are symmetrically fixed on both sides of the fixing frame, a slot for inserting the support rod is provided on the base, a card slot is provided on the part of the support rod located in the slot, a card board slot is provided on the inner wall of the slot, a card board for inserting into the card slot is provided in the card board slot, and a pull rod for sliding the card board out of the slot is provided on the base.

[0006] Preferably, the protection unit is a fusible wire with resistance.

[0007] Preferably, a clamping plate spring is fixedly provided in the clamping plate groove, and the clamping plate spring is fixedly connected to the clamping plate.

[0008] Preferably, one end of the card plate outside the card plate slot is an inclined surface and is inclined toward the bottom of the slot.

[0009] Preferably, a pull rod groove is formed through the inner wall of the card plate groove, the width of the pull rod groove is smaller than the width of the card plate groove, and the pull rod is arranged in the pull rod groove and fixedly connected to the card plate.

[0010] Preferably, stabilizing blocks are symmetrically fixed on the side walls of the support rods, and the stabilizing blocks are in contact with the outer wall of the top of the base.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: through the setting of the protection unit, the protection unit can overheat and melt when a large current or lightning strikes, thereby realizing the large current protection function; through the setting of the support rod, slot, card slot, card plate slot, card plate spring, card plate, pull rod slot and pull rod, the disassembly and assembly of the magnetic core and the base are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 Schematic diagram of the appearance of this embodiment;

[0014] Figure 2 This is a disassembled diagram of the magnetic core and the base of this embodiment;

[0015] Figure 3 It is a side sectional partial view of this embodiment.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Magnetic core; 2. Winding; 3. Fixed frame; 4. Base; 5. Pin; 6. Protection unit; 7. Support rod; 8. Slot; 9. Card slot; 10. Card plate slot; 11. Card plate spring; 12. Card plate; 13. Pull rod slot; 14. Pull rod; 15. Stabilizing block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3The utility model provides a technical solution: an amorphous three-phase common-mode inductor for large current protection, comprising a magnetic core 1, a winding 2 and a base 4, the magnetic core 1 is made of amorphous material, the winding 2 is three groups independently wound on the magnetic core 1 and symmetrically arranged, a plurality of pins 5 are provided on the base 4, a protection unit 6 for large current protection is provided on the pins 5, the magnetic core 1 is fixedly connected to a fixing frame 3, support rods 7 are symmetrically fixed on both sides of the fixing frame 3, a slot 8 for inserting the support rod 7 is provided on the base 4, a card slot 9 is provided on the part of the support rod 7 located in the slot 8, a card board slot 10 is provided on the inner wall of the slot 8, a card board 12 for carding into the card slot 9 is provided in the card board slot 10, and a pull rod 14 for making the card board 12 slide out of the card slot 9 is provided on the base 4.

[0020] Specifically, the protection unit 6 is a fusible wire with resistance, which is arranged at the connection section of the pin 5. The winding 2 wire is electrically connected to the pin 5. The protection unit 6 can be overheated and melted when a large current or lightning strikes, thereby realizing a large current protection function.

[0021] Specifically, a clamping plate spring 11 is fixedly provided in the clamping plate slot 10 , and the clamping plate spring 11 is fixedly connected to the clamping plate 12 . The clamping plate 12 is clamped into the clamping slot 9 by the elastic force of the clamping plate spring 11 , thereby limiting the support rod 7 .

[0022] Specifically, one end of the card plate 12 outside the card plate slot 10 is an inclined surface and is inclined toward the bottom of the slot 8, which is convenient for the installation of the support rod 7. The support rod 7 is inserted into the slot 8. The inclined surface of the card plate 12 is subjected to force to cause the card plate 12 to compress the card plate spring 11 and slide into the card plate slot 10 until the support rod 7 is against the bottom of the slot 8. At this time, the card plate 12 is opposite to the card slot 9. Under the elastic force of the card plate spring 11, the card plate 12 is inserted into the card slot 9 to limit the support rod 7, thereby completing the installation of the support rod 7.

[0023] Specifically, a pull rod groove 13 is formed through the inner wall of the card slot 10, the width of which is smaller than the width of the card slot 10, and a pull rod 14 is disposed in the pull rod groove 13 and fixedly connected to the card 12. Pulling the pull rod 14 drives the card 12 to slide, thereby causing the card 12 to slide out of the card slot 9 and into the card slot 10, so that the support rod 7 loses its limit and can be removed from the slot 8.

[0024] Specifically, a stabilizing block 15 is symmetrically fixed on the side wall of the support rod 7, and the stabilizing block 15 is in contact with the top outer wall of the base 4. When the support rod 7 is against the bottom of the slot 8, the stabilizing block 15 is in contact with the surface of the base 4, supporting the support rod 7, thereby improving the stability of the magnetic core 1.

[0025] A specific application example of this embodiment is:

[0026] When the device is in use, the winding 2 wire is electrically connected to the pin 5. When a large current enters the inductor through the pin 5, the protection unit 6 can be overheated and melted when a large current or lightning strikes, thereby realizing a large current protection function. When the magnetic core 1 and the base 4 need to be disassembled, the pull rod 14 is pulled to drive the card plate 12 to slide, so that the card plate 12 slides out of the card slot 9 and slides into the card plate slot 10, so that the support rod 7 loses its limit and can be removed from the slot 8. When the support rod 7 is inserted into the slot 8, the inclined surface of the card plate 12 is subjected to force to cause the card plate 12 to compress the card plate spring 11 and slide into the card plate slot 10 until the support rod 7 is against the bottom of the slot 8. At this time, the card plate 12 is opposite to the card slot 9. Under the elastic force of the card plate spring 11, the card plate 12 is inserted into the card slot 9 to limit the support rod 7, thereby completing the installation of the support rod 7.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An amorphous three-phase common-mode inductor for high current protection, comprising a magnetic core (1), a winding (2) and a base (4), characterized in that: The magnetic core (1) is made of amorphous material, the windings (2) are three groups independently wound on the magnetic core (1) and symmetrically arranged, the base (4) is provided with a plurality of pins (5), the pins (5) are provided with a protection unit (6) for high current protection, the magnetic core (1) is fixedly connected to a fixing frame (3), support rods (7) are symmetrically fixedly provided on both sides of the fixing frame (3), the base (4) is provided with a slot (8) for inserting the support rod (7), the part of the support rod (7) located in the slot (8) is provided with a card slot (9), the inner wall of the slot (8) is provided with a card slot (10), a card slot (12) for inserting into the card slot (9) is provided in the card slot (10), and a pull rod (14) for sliding the card slot (12) out of the card slot (9) is provided on the base (4).

2. The amorphous three-phase common-mode inductor for high current protection according to claim 1 is characterized in that: The protection unit (6) is a fusible wire with a resistor.

3. The amorphous three-phase common-mode inductor for high current protection according to claim 1 is characterized in that: A clamping plate spring (11) is fixedly disposed in the clamping plate groove (10), and the clamping plate spring (11) is fixedly connected to the clamping plate (12).

4. The amorphous three-phase common-mode inductor for high current protection according to claim 1 is characterized in that: One end of the card plate (12) located outside the card plate slot (10) is an inclined surface and is inclined toward the bottom of the slot (8).

5. The amorphous three-phase common-mode inductor for high current protection according to claim 1 is characterized in that: A pull rod groove (13) is formed through the inner wall of the card plate groove (10); the width of the pull rod groove (13) is smaller than the width of the card plate groove (10); and the pull rod (14) is disposed in the pull rod groove (13) and is fixedly connected to the card plate (12).

6. The amorphous three-phase common-mode inductor for high current protection according to claim 1 is characterized in that: The side walls of the support rod (7) are symmetrically fixed with stabilizing blocks (15), and the stabilizing blocks (15) are in contact with the top outer wall of the base (4).

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