Output type large-current flat coil transformer

Abstract

The utility model discloses an output type large current flat coil transformer, which comprises a magnetic core and two coils, and is characterized by further comprising an insulating sleeve and a base, the coils are flat coils, the magnetic core comprises two middle columns and two core columns, the insulating sleeve is sleeved on the core columns, the coils are wound on the insulating sleeve, and the base is arranged on the base. The two sides of the insulation sleeve are provided with insulation rings enabling the coils to be insulated from the middle columns, the two middle columns are symmetrically provided with caulking grooves allowing the core columns to be inserted therein, the side walls, located in the caulking grooves, of the core columns are symmetrically provided with clamping grooves, the inner walls of the caulking grooves are provided with clamping block grooves corresponding to the clamping grooves, clamping blocks used for being clamped into the clamping grooves are arranged in the clamping block grooves, and inserting grooves are symmetrically formed in the base. According to the transformer, the good heat dissipation effect can be achieved through the structure of the magnetic core, the flat coil is resistant to high temperature and can bear large current, and therefore the size of the transformer is reduced, the insulation effect is achieved through the insulation ring and the insulation sleeve, and magnetic loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an output type large current flat coil transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0003] The transformer of traditional technology uses a skeleton structure, and the transformer space utilization rate is low. A higher height is required to meet the transformer power output, and the skeleton structure has poor installation reliability. The skeleton transformer winding system requires a larger transformer structure to meet the requirements. The skeleton is made of plastic material and has poor heat dissipation performance. It cannot dissipate the heat inside the transformer. The transformer body temperature is high, and a larger copper wire cross-sectional area is required to compensate for the core loss, which leads to an increase in cost and transformer size. Utility Model Content

[0004] The utility model aims to provide a flat coil transformer with a large output current to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an output type large current flat coil transformer, comprising a magnetic core and two coils, and also comprising an insulating sleeve and a base, the coil being a flat coil, the magnetic core comprising two middle columns and two core columns, the insulating sleeve being arranged on the core column, the coil being wound on the insulating sleeve, insulating rings being arranged on both sides of the insulating sleeve for insulating the coil from the middle column, the two middle columns being symmetrically provided with embedding grooves for inserting the core columns, the side walls of the core columns located in the embedding grooves being symmetrically provided with card slots, the inner walls of the embedding grooves being provided with card block slots corresponding to the card slots, the card block slots being provided with card blocks for inserting into the card slots, the base being symmetrically provided with slots, the bottoms of the two middle columns being fixed with plug blocks for inserting into the slots, and the base being provided with a clearance groove for inserting the insulating rings.

[0006] Preferably, the middle column and the core column are made of iron-silicon alloy, and the cross-sections of the middle column and the core column are square.

[0007] Preferably, the insulating sleeve is slidably connected to the core column, annular grooves are provided on the inner walls at both ends of the insulating sleeve, an embedded ring inserted into the annular groove is fixedly provided on the side wall of the insulating ring and is an interference fit, the insulating ring fits with the center column, and the insulating sleeve and the insulating ring are both made of epoxy resin.

[0008] Preferably, a block spring for driving the block to slide is fixedly provided in the block groove, the block spring is fixedly connected to the block, one end of the block outside the block groove is an arc surface, and limiting grooves are symmetrically provided on the inner wall of the block groove, and a limiting block fixedly connected to the side wall of the block is slidably provided in the limiting groove.

[0009] Preferably, the core column and the embedding groove are interference fit, and the plug block and the slot are interference fit and are bonded by epoxy glue.

[0010] Preferably, an ear plate is fixedly provided on the side wall of the base, a pin positioning plate for fixing pins is provided on the ear plate, and a mounting hole is opened on the ear plate at the side of the pin positioning plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: through the setting of the flat coil, the flat coil is more resistant to high temperature than the ordinary round coil, and the flat coil is smaller in size when the same current passes through it. Therefore, when subjected to large current, the flat coil occupies less space, thereby reducing the size of the transformer and reducing the cost; through the setting of the middle column, core column, embedded groove, block, block groove, slot and block spring, the middle column and the core column are iron-silicon alloy, which can provide better heat dissipation effect, and the flattening setting of the middle column and the core column increases the surface area, thereby improving the heat dissipation effect, and the structure is stable and easy to install; through the setting of the insulating sleeve, insulating ring, ring groove and embedded ring, the coil is completely insulated from the magnetic core, reducing magnetic loss and improving the power of the transformer. The insulating ring and the insulating sleeve can be spliced ​​through the ring groove and embedded ring, so that the insulating sleeve can be removed for coil winding, thereby reducing the winding space and reducing the structural size of the transformer. 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 schematic diagram of the structure of the present embodiment without the coil;

[0015] Figure 3 This is a disassembled diagram of the magnetic core and the base of this embodiment;

[0016] Figure 4 This is a diagram of the column and core column being separated in this embodiment;

[0017] Figure 5 It is a cross-sectional view of the magnetic core of this embodiment when looking down at the embedded groove.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Magnetic core; 101. Middle column; 102. Core column; 2. Coil; 3. Insulating sleeve; 4. Insulating ring; 5. Ring groove; 6. Embedded ring; 7. Embedded groove; 8. Card slot; 9. Card block; 10. Card block slot; 11. Card block spring; 12. Limiting groove; 13. Limiting block; 14. Base; 15. Slot; 16. Insert block; 17. Make way groove; 18. Ear plate; 19. Pin positioning plate; 20. Mounting hole. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: an output type large current flat coil transformer, comprising a magnetic core 1 and two coils 2, and also comprising an insulating sleeve 3 and a base 14, the coil 2 is a flat coil, the magnetic core 1 comprises two middle columns 101 and two core columns 102, the insulating sleeve 3 is sleeved on the core column 102, the coil 2 is wound on the insulating sleeve 3, and insulating rings 4 are arranged on both sides of the insulating sleeve 3 to insulate the coil 2 from the middle column 101, the two middle columns 101 are symmetrically provided with embedding grooves 7 for the core column 102 to be inserted, the side walls of the core column 102 located in the embedding grooves 7 are symmetrically provided with card grooves 8, the inner walls of the embedding grooves 7 are correspondingly provided with card block grooves 10, and the card block grooves 10 are provided with card blocks 9 for being inserted into the card grooves 8, the base 14 is symmetrically provided with slots 15, the bottoms of the two middle columns 101 are fixedly provided with plug blocks 16 for inserting into the slots 15, and the base 14 is provided with a clearance groove 17 for inserting the insulating ring 4.

[0022] Specifically, the middle column 101 and the core column 102 are made of iron-silicon alloy, which can provide better heat dissipation effect. The cross-sections of the middle column 101 and the core column 102 are square. The flattened arrangement of the middle column 101 and the core column 102 increases the surface area, thereby improving the heat dissipation effect.

[0023] Specifically, the insulating sleeve 3 is slidably connected to the core column 102, and annular grooves 5 are provided on the inner walls at both ends of the insulating sleeve 3. An embedded ring 6 inserted into the annular groove 5 is fixedly provided on the side wall of the insulating ring 4 and is interference fit. The insulating ring 4 fits the center column 101. The insulating sleeve 3 and the insulating ring 4 are both made of epoxy resin, so that the coil 2 is completely insulated from the magnetic core 1, the magnetic loss is reduced, and the power of the transformer is improved. The insulating ring 4 and the insulating sleeve 3 can be spliced ​​through the annular groove 5 and the embedded ring 6, so that the insulating sleeve 3 can be removed for coil winding, thereby reducing the winding space and reducing the structural size of the transformer.

[0024] Specifically, a block spring 11 for driving the block 9 to slide is fixedly provided in the block groove 10, and the block spring 11 is fixedly connected to the block 9. The end of the block 9 outside the block groove 10 is an arc surface. The block 9 is inserted into the card groove 8 to further improve the stability of the connection between the center column 101 and the core column 102. When installing, the core column 102 is inserted into the embedded groove 7. The arc surface of the block 9 is subjected to force to compress the block spring 11 and slide into the block groove 10 until the core column 102 is connected with the embedded groove 7. After the bottom of the groove 7 is abutted, the block 9 is opposite to the groove 8. Under the elastic force of the block spring 11, the block 9 is inserted into the groove 8 to limit the core column 102, thereby improving the structural stability of the magnetic core 1. The inner wall of the block groove 10 is symmetrically provided with limiting grooves 12, and a limiting block 13 fixedly connected to the side wall of the block 9 is slidably provided in the limiting groove 12. Through the setting of the limiting groove 12 and the limiting block 13, it is prevented that the block 9 slides out of the block groove 10 too much and interferes with the insertion of the core column 102.

[0025] Specifically, the core column 102 and the embedding groove 7 are interference fit, and the plug block 16 and the slot 15 are interference fit and are bonded by epoxy glue to ensure the stability of the overall structure of the transformer.

[0026] Specifically, the side wall of the base 14 is fixed with an ear plate 18, and the ear plate 18 is provided with a pin positioning plate 19 for pin fixing. The ear plate 18 is provided with a mounting hole 20 on the side of the pin positioning plate 19, and the mounting hole 20 can facilitate the fixing of the transformer during use.

[0027] A specific application example of this embodiment is:

[0028] When the device is in use, the coil 2 is wound on the insulating sleeve 3, and then the insulating sleeve 3 is installed through the annular groove 5 and the embedded ring 6 of the insulating ring 4, the core column 102 is passed through the insulating sleeve 3, and the core column 102 is inserted into the embedded groove 7. The arc surface of the clamping block 9 is subjected to force to compress the clamping block spring 11 and slide into the clamping block groove 10 until the core column 102 is against the bottom of the embedded groove 7. At this time, the clamping block 9 is opposite to the clamping groove 8. Under the elastic force of the clamping block spring 11, the clamping block 9 is clamped into the clamping groove 8 to limit the core column 102, completing the installation of the core column 102 and the middle column 101, improving the structural stability of the magnetic core 1, the insulating ring 4 is attached to the side wall of the middle column 101, the inserting block 16 is inserted into the slot 15 of the base 14 and fixed by epoxy glue, so that the overall structure of the transformer is stable, the lead wire of the coil 2 is fixed on the pin positioning plate 19 and fixed by epoxy glue, and the transformer can be used, and the mounting hole 20 can be used to fix the transformer.

[0029] 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.

[0030] 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.

[0031] 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 output type large current flat coil transformer, comprising a magnetic core (1) and two coils (2), characterized in that: It also comprises an insulating sleeve (3) and a base (14), the coil (2) being a flat coil, the magnetic core (1) comprising two middle columns (101) and two core columns (102), the insulating sleeve (3) being sleeved on the core columns (102), the coil (2) being wound on the insulating sleeve (3), insulating rings (4) being provided on both sides of the insulating sleeve (3) for insulating the coil (2) from the middle columns (101), the two middle columns (101) being symmetrically provided with embedding grooves (7) for inserting the core columns (102), and the core (102) being provided with a plurality of insulating rings (4) for insulating the coil (2) from the middle columns (101). The side wall of the column (102) located in the embedded groove (7) is symmetrically provided with a clamping groove (8), the inner wall of the embedded groove (7) is provided with a clamping block groove (10) corresponding to the clamping groove (8), the clamping block groove (10) is provided with a clamping block (9) for clamping into the clamping groove (8), the base (14) is symmetrically provided with a slot (15), the bottom of the two middle columns (101) is fixed with an inserting block (16) for inserting into the slot (15), and the base (14) is provided with a clearance groove (17) for inserting the insulating ring (4).

2. The output type large current flat coil transformer according to claim 1, characterized in that: The middle column (101) and the core column (102) are made of an iron-silicon alloy, and the cross-sections of the middle column (101) and the core column (102) are square.

3. The output type large current flat coil transformer according to claim 1, characterized in that: The insulating sleeve (3) is slidably connected to the core column (102); annular grooves (5) are provided on the inner walls at both ends of the insulating sleeve (3); an insert ring (6) is fixedly provided on the side wall of the insulating ring (4) and is inserted into the annular groove (5) and is interference fit; the insulating ring (4) is fitted with the center column (101); and the insulating sleeve (3) and the insulating ring (4) are both made of epoxy resin.

4. The output type large current flat coil transformer according to claim 1, characterized in that: A block spring (11) for driving the block (9) to slide is fixedly arranged in the block groove (10); the block spring (11) is fixedly connected to the block (9); one end of the block (9) located outside the block groove (10) is an arc surface; a limiting groove (12) is symmetrically provided on the inner wall of the block groove (10); a limiting block (13) fixedly connected to the side wall of the block (9) is slidably arranged in the limiting groove (12).

5. The output type large current flat coil transformer according to claim 1, characterized in that: The core column (102) and the embedding groove (7) are in an interference fit, and the insert block (16) and the slot (15) are in an interference fit and are bonded by epoxy glue.

6. The output type large current flat coil transformer according to claim 1, characterized in that: The side wall of the base (14) is fixedly provided with an ear plate (18), the ear plate (18) is provided with a pin positioning plate (19) for pin fixing, and the ear plate (18) is provided with a mounting hole (20) on the side of the pin positioning plate (19).

Images