CN203931756U - Transformer structure - Google Patents

Abstract

A transformer structure comprising: the winding seat is provided with a winding post, a coil group which is wound on the outer side of the winding post, an insulating frame body which is sleeved on the winding post and is provided with two iron core accommodating grooves and an iron core group which is provided with a central iron core and two side iron cores, wherein the two side iron cores are accommodated in the two iron core accommodating grooves, the two iron core accommodating grooves are respectively provided with a separation plate, the two side iron cores of the iron core group are respectively provided with an inner edge surface which is adjacent to the separation plate, the separation plate and the inner edge surface are respectively provided with an arc surface area and a plane area, and the height of the arc surface area is greater than that of the plane area. The utility model discloses can compromise the control transformer simultaneously the iron core group with the leakage inductance that the coil assembly mutual induction produced can make simultaneously again insulating framework with can not produce the interference during the winding post combination of wire winding seat.

Description

Transformer structure

technical field

The utility model relates to a transformer structure, in particular to a transformer structure with a combined iron core and a combined insulating shell.

Background technique

At present, the transformer is a very important component in the power module used in electrical products or computer information products. The general transformer structure mainly includes an iron core, a primary coil, and a secondary coil, and is used to connect the iron core and the primary coil to the Insulation structure for secondary coil isolation.

Although the development of transformers has become a very mature product, there are quite a few industrial standards and safety regulations to regulate the specifications of transformers. Therefore, in order to make the transformer meet the requirements of industrial standards and safety regulations, there are currently quite a few types of transformers on the market. Therefore, when designing the structure of the transformer, those skilled in the art must follow the requirements of industrial standards or safety regulations, and carry out change design within a limited variation space, which also causes difficulties in the design of the transformer structure.

For example, China Taiwan Patent No. I338310 (hereinafter referred to as known technology) discloses a vertical transformer combined wire frame, its structure includes a winding base body, a coil group ( The coil group can be further divided into a primary coil and a secondary coil), two iron cores, and two insulating shells arranged between the iron core and the primary coil and the secondary coil.

In the transformer structure disclosed in this known technology, the structure of the iron core adopted is the structure of an ER-type iron core, which has a central iron core, and two symmetrically arranged on both sides of the central iron core, and are connected to the described central iron core. Side cores extending in parallel to and in the same direction as the central core. The two iron cores are assembled on the winding seat of the transformer in the manner of facing each other end to end. When the transformer is assembled, the central iron core passes through a winding post of the winding base and the center of a coil group wound outside the winding post, and the two side irons The core is parallel to the central iron core and symmetrically located outside the coil group. The insulating shell is interposed between the inner surfaces of the two side parts of the two iron cores and the outer surface of the coil group, so as to isolate the iron cores from the coils open.

In the transformer of the known technology, in order to control the leakage inductance of the transformer within a certain range, the inner surface of the side iron core close to the coil group is designed as an arc-shaped curved surface coaxial with the coil group, In order to keep the distance between the inner surface of the side iron core consistent with the outer surface of the coil group, so that the inner surface of the side iron core can be kept as close as possible to the outer surface of the coil group, so that The leakage inductance generated by induction between the coil and the side iron core of the iron core is increased.

However, because the inner surface of the side iron core of the iron core forms a concave arc shape, the insulating shell used to accommodate the isolation plate of the side iron core of the iron core must also be designed as an arc surface. shape, so that the isolation plate will interfere with the coil group when the insulating housing is disassembled, and the insulating housing must be designed to be disassembled and combined from the two sides of the winding base. The separate structure makes the structure of the winding seat and the insulating housing complicated.

Utility model content

The problem to be solved by the utility model is to provide a method for improving the leakage inductance generated by the mutual induction between the iron core group and the coil group of the transformer, and at the same time taking into account the convenience of assembly and simplifying the structure. Transformer structure.

The technical problem to be solved by the utility model is achieved through the following technical solutions:

Embodiment 1 A vertical combined transformer structure, which includes: a winding seat, the winding seat has a winding column, and a through hole passing through the winding column; a coil group, the The coil group is wound on the outside of the winding post and is coaxial with the center line, the coil group has a first coil group and a second coil group; an insulating frame, the insulating frame is movable Sleeved on the winding column of the winding seat, the insulating frame has a first side plate, a second side plate parallel to the first side plate, and two The iron core accommodating groove on both sides of the insulating frame and connected between the first side plate and the second side plate, wherein when the insulating frame is sleeved on the winding post When it is on the top, the two iron core accommodating grooves are symmetrically located on both sides of the coil group, and the two iron core accommodating grooves respectively have a separating plate adjacent to the side of the coil group; and An iron core group, the iron core group is composed of two iron core units, the iron core group has a central iron core inserted into the through hole of the winding post and two The central iron cores are parallel to each other and are accommodated in the side iron cores in the iron core accommodating groove, and the two side iron cores respectively have an inner edge surface adjacent to the isolation plate of the iron core accommodating groove ; Wherein, the insulating frame body is integrally formed, and is assembled on the winding post with the second side plate facing the winding post.

Wherein, the insulating frame body and the iron core group further have a base line passing through the central line of the central iron core and parallel to the first side plate and the second side plate, and the insulating frame body is located at The area between the first side plate and the base line is defined as an arc area, and the area of the insulating frame between the second side plate and the base line is defined as a plane area.

Wherein, the two isolation plates respectively have a first arc surface located in the arc area and coaxial with the center line and a first arc surface located in the plane area and connected to the first side plate and the first side plate and The first planar parts of the second side plates are perpendicular to each other; the two inner surfaces respectively have a second arcuate part located in the arcuate area and a second planar part located in the planar area, the first The second arc surface is coaxial with the center line and adjacent to the first arc surface, and the second plane portion is perpendicular to the first side plate and the second side plate and is connected to the first The planar parts are adjacent to each other.

Embodiment 1 Better, the winding post further has a mounting seat, and the bottom surface of the mounting seat has a mounting plane. The winding post is arranged on the mounting seat in a direction perpendicular to the installation plane, and the winding post further has a first partition arranged at the top of the winding post, and a first partition provided on the top of the winding post. The second partition at the other end of the winding post relative to the first partition, an intermediate partition between the first partition and the second partition, and two partitions respectively located at the Card slots on both sides of the middle partition. The insulating frame further has a connecting portion connected to the top of the two iron core accommodation slots and connected to the first partition, two connecting parts respectively arranged on the inner side walls of the iron core accommodation slots and connected to the first partition. The protruding plate connecting the card slots and the two engaging parts provided at the bottom end of the iron core accommodating groove and connecting with the second partition, by means of the connecting part, the protruding plate and the The engaging portion engages with the first partition, the middle partition and the second partition to position the insulating frame on the winding post.

The mounting seat further has a front base body and a rear base body; wherein when the insulating frame body is assembled on the winding post, the second side plate abuts against the front side of the rear base body; The two sides of the upper edge of the front base body are respectively provided with a notch that cooperates with the bottom end of the iron core accommodating groove of the insulating frame corresponding to the position of the bottom end of the iron core accommodating groove.

Wherein the height of the arcuate area is higher than that of the planar area, so that the height of the second arcuate portion of the inner surface of the core group is greater than the height of the second planar portion.

Embodiment 2 of the present utility model provides a horizontal combined transformer structure, wherein the winding post is arranged on the mounting base parallel to the mounting plane of the mounting base. And the winding post further has a first partition arranged at one end of the winding post, a second partition provided at the other end of the winding post relative to the first partition, and a second partition provided at the other end of the winding post relative to the first partition. The intermediate partition between the first partition and the second partition, and at least one slot provided on the first, second or third partition; the insulating frame is based on the second side The board faces the direction of the winding post and is nested on the winding post, and the inner side of the insulating frame is further provided with at least one convex plate that engages with the slot, so that the The insulating frame is positioned on the winding post. Wherein the height of the arc-separating surface area is higher than that of the plane area, so that the height of the second arc-shaped portion of the inner surface of the core group is greater than the height of the second plane portion.

The design of the above-mentioned structure of the utility model can simultaneously control the leakage inductance generated by the mutual induction between the iron core group and the coil group of the transformer, and at the same time can make the insulating frame body in the winding with the winding seat There will be no interference when the columns are combined, so that the insulating frame can be assembled on the winding post from a single side, so that the insulating frame can be constructed in one piece, so it can solve the problem of conventional transformer structure. The insulation frame is disassembled into multiple pieces and assembled on the winding base from different directions, which makes the structure of the transformer insulation case complex.

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the accompanying drawings are only for reference and illustration, and are not intended to limit the present utility model.

Description of drawings

Fig. 1 is the three-dimensional assembly drawing of the utility model embodiment one;

Fig. 2 is a three-dimensional exploded view of Embodiment 1 of the utility model;

Fig. 3 is a three-dimensional exploded view of the winding seat and the insulating frame of the first embodiment of the utility model;

Fig. 3A is a front view of the winding seat of Embodiment 1 of the present utility model;

Fig. 4 is a front view of the combined state of the transformer structure in Embodiment 1 of the present utility model;

Fig. 5 is a side sectional view of the combined state of the winding seat and the insulating frame body in Embodiment 1 of the present utility model;

Fig. 6 is a perspective view of an iron core unit used in Embodiment 1 of the present utility model;

Fig. 7 is a top view of the iron core unit used in Embodiment 1 of the present utility model;

Fig. 8 is a cross-sectional view of an insulating frame used in Embodiment 1 of the present utility model;

Fig. 9 is a combined sectional view of Embodiment 1 of the present utility model;

Fig. 10 is a three-dimensional combined view of the second embodiment of the utility model;

Fig. 11 is a three-dimensional exploded view of Embodiment 2 of the utility model;

Fig. 12 is a top view of the iron core unit used in Embodiment 2 of the present invention;

Fig. 13 is a cross-sectional view of an insulating frame used in Embodiment 2 of the present invention;

Fig. 14 is a combined sectional view of Embodiment 2 of the present utility model.

[Description of Reference Signs]

10 Winding seat

11 mount

111 front seat body

112 rear seat body

113 Notch

13 terminals

14 Winding posts

141 First partition

142 Second partition

143 Intermediate partition

144 card slot

145 guide groove

15 winding area

151 First winding area

152 Second winding area

16 through holes

17 Centerline

18 Mounting plane

20 insulation frame

21 First side panel

22 second side panel

23 Iron core accommodation slot

24 isolation board

241 First arc face

242 First Plane Section

25 connection part

26 raised plate

27 Engagement part

30 core set

31 core unit

32 center core

33 side core

34 inner surface

341 Second arc face

342 Second Plane Section

35 plate body

40 Coil Sets

41 First coil group

42 Second coil set

50 baseline

51 arc area

52 plane area

60 Winding seat

61 mount

611 front seat body

612 rear seat body

62 Mounting plane

63 terminals

64 winding post

641 First clapboard

642 Second partition

643 Intermediate partition

644 card slot

651 First winding area

652 Second winding area

66 through holes

67 Centerline

70 insulation frame

71 First side panel

72 Second side panel

73 Iron core accommodation slot

74 isolation board

741 First arc face

742 First Plane Section

75 raised plate

80 core set

81 core unit

82 center core

83 side core

84 inner surface

841 Second arc face

842 Second Plane Section

85 plate body

86 Baseline

87 curved area

88 plane area

90 Coil Sets

height of d1

d2 height

Detailed ways

Embodiment one

As shown in Figures 1 to 9, it is the first embodiment of the transformer structure of the present invention. In the first embodiment, a vertical transformer structure is disclosed, which consists of a winding base 10, an insulating frame 20, an iron The core set 30 is composed of a coil set 40 (as shown in FIG. 4 ) wound on the winding base 10 .

As shown in Figures 2 and 3, the winding base 10 has a mounting base 11, the mounting base 11 is composed of a front base body 111 and a rear base body 112, the front base body 111 and the rear base body The body 112 is two parallel plate bodies, and a plurality of terminals 13 are arranged on the bottom thereof, so that the plurality of terminals 13 are arranged side by side on the bottom surface of the mounting base 11 . As shown in FIG. 4 and FIG. 5 , the mounting base 11 can be installed on a mounting plane 18 provided by a circuit board or a mounting socket at a desired mounting position of the winding base 10 . The front seat body 111 and the rear seat body 112 are parallel to each other and perpendicular to the installation plane 18 . It must be noted here that the bottom of the mounting base 11 may also be configured without terminals 13 .

As shown in Figure 3, the winding base 10 is provided with a winding column 14 on the mounting base, the winding column 14 is a cylinder perpendicular to the installation plane 18, which has a There is a center line 17 at the center of the winding post 14 and perpendicular to the installation plane 18, and a through hole 16 penetrating the winding post along the center line.

Please refer to Fig. 3 and shown in Fig. 3A again, on the described winding column 14, a first dividing plate 141 is further provided at its top, a second dividing plate 142 is set at its bottom, and a second dividing plate 142 is located at the described first. An intermediate partition 143 between the first partition 141 and the second partition 142 . The first partition 141, the middle partition 143 and the second partition divide the outer surface of the winding post 14 into a first winding area 151 and a second winding area 152, as shown in Figure 4 As shown, the first winding area 151 and the second winding area 152 are respectively wound with a first coil 41 and a second coil 42, and the first coil 41 and the second coil 42 together constitute the Coil set 40.

As shown in FIGS. 1 to 3 , the insulating frame 20 is sheathed on the winding post 14 to insulate the core set 30 from the coil set 40 . The insulating frame body 20 has a first side plate 21, a second side plate 22 parallel to the first side plate 21, and two sides of the insulating frame body 20 connected to An iron core accommodating groove 23 between the first side plate 21 and the second side plate 22 .

As shown in FIG. 4 , when the insulating frame 20 is assembled on the winding base 10 , the two iron core accommodating grooves 23 are located symmetrically on both sides of the winding post 14 and the coil set 40 . side. And the two core units 31 of the core set 30 are respectively assembled on the insulating frame body 20 and the winding post 14 from the upper end and the lower end of the winding post 14, and part of the structure of the core set 40 is accommodated in The two iron cores are accommodated in the groove 23 .

As shown in FIG. 3 and FIG. 4 , the insulating frame body 20 is provided with a connecting portion 25 between the top ends of the two iron core accommodating grooves 23 , so that the top ends of the two iron core accommodating grooves 23 form a closed shape. In order to make the insulating frame body 20 and the winding post 14 fit and engage with each other, the connecting portion 25 is designed to engage with the top surface of the first partition 141 of the winding post 14 structure. Moreover, a convex plate 26 is respectively provided at the position where the inner surface of the two iron core accommodating grooves 23 is equal to the height of the middle partition 143 of the winding post 14, and the middle partition on the winding post 14 Two sides of the board 143 are respectively provided with a locking groove 144 that can engage with the convex plate 26 . In addition, the bottoms of the two iron core accommodating grooves 23 of the insulating frame 20 are open, and the inner surfaces of the bottom ends of the two iron core accommodating grooves 23 are respectively provided with an engaging portion 27 bent inward. , the two engaging portions can be engaged with the lower edge of the second partition 142 .

Therefore, as shown in FIG. 4 and FIG. 5, when the insulating frame body 20 is assembled on the winding post 14, the second side plate 22 first faces the side of the winding post 14, and The connecting portion 25, the two convex plates 26, and the engaging portion 27 are respectively aligned and engaged with the first partition 141, the slot 144 on the edge of the middle partition 143, and the second partition. The second partition 142 , and then push the insulating frame 20 to be completely engaged with the outer side of the winding post 14 .

As shown in Figure 3, Figure 4 and Figure 5, after the assembly of the insulating frame body 20 and the winding post 14 is completed, the bottom end of the back of the second side plate 22 is against the mounting seat 11. The front side surface of the rear seat body 112 is used to locate the position where the insulating frame body 20 is inserted into the winding post 14 . In addition, since the bottom of the insulating frame 20 will partially extend downwards beyond the upper edge of the mounting seat 11 , in order to prevent the insulating frame 20 from being installed on the winding post 14 The mounting seat interferes, so a notch 113 is respectively provided at the upper edge of the front seat body 111 of the mounting seat 11 corresponding to the bottom edge of the two iron core accommodating grooves 23 of the insulating frame 20, as shown in the figure 3A, the two notches 113 and the bottom surface of the second partition 142 jointly form two guide grooves 145, when the insulating frame 20 fits on the winding post 14 and reaches the position , the bottom edge of the engaging portion 27 at the bottom of the two iron core accommodating grooves 23 engages with the notch portion 113 and snaps into the two guiding grooves 145, so that the two iron cores The bottom of the core accommodating groove 23 is supported by the front seat body 111 of the installation seat 11 .

As shown in Fig. 2, Fig. 4 and Fig. 9, after the transformer assembly of the present invention is completed, the insulating frame body 20 is arranged between the core group 30 and the coil group 40, so that all Insulation is formed between the coil set 40 and the iron core set 30 . As shown in Fig. 8 and Fig. 9, the two iron core accommodating grooves 23 of the insulating frame body 20 respectively have an isolation plate 24, and the isolation plate 24 is connected with the first side plate 21 and the The second side plate 22 together constitutes the bottom surface and two sides of the iron core accommodating groove 23, and as shown in FIG. 9, when the transformer of the present invention is assembled, the isolation plate 24 is located The two sides of the group 40 are located in the gap between the coil group 40 and the iron core group 30 .

As shown in FIG. 6 , the core group 30 is composed of two detachable core units 31 . The two iron core units 31 are of ER type iron core structure. When the two iron core units 31 are connected end to end, they can be combined into a complete iron core group 30 . The iron core unit 31 has a cylindrical central iron core 32, two side iron cores 33 parallel to the central iron core 32, and a central iron core 32 and the two side iron cores 32. The plates 35 are perpendicular to each other and connected to one end of the central iron core 32 and the two side iron cores 33 . As shown in Figure 1 and Figure 9, when the core unit 31 is assembled on the winding post 14 and the insulating frame 20, the central iron core 32 is inserted into the winding post 14 through hole 16, and the two side iron cores 33 are housed in the iron core accommodating groove 23 of the insulating frame 20, and the inner surfaces of the two side iron cores 33 respectively have a The inner edge surface 34 adjacent to the isolation plate 24 of the iron core accommodating groove 23 .

As shown in FIG. 9 , the isolation plate 24 of the present invention and the two inner surfaces 34 of the iron core group 30 adopt a combined structure of a flat surface and an arc-shaped curved surface. As shown in FIG. 9 , the insulating frame body 20 and the iron core group 30 further have a hole passing through the center of the central iron core 32 and parallel to the first side plate 21 and the second side plate 22 . The base line 50 , the insulating frame body 20 and the iron core group 30 , with the base line 50 as the boundary, is located above the base line 50 until the area between the first side plate 21 of the insulating frame body 20 Defined as an arc surface area 51 , the area between the insulating frame 20 and the core set 30 below the base line 50 until the second side plate 22 is defined as a plane area.

And as shown in FIG. 8 , the two isolation plates 24 of the insulating frame 20 are separated by the base line 50 , and the part located in the arc surface area 51 is one and the central iron core 32 is the arc-shaped first arc surface 241 concentric with the center, and the isolation plate 24 is located in the plane area 52 , which is a first plane portion 242 perpendicular to the second side plate 22 . At the same time, the first arc surface portion 241 and the first planar portion 242 are connected to each other.

At the same time, the two inner edge surfaces 34 of the two side cores 33 of the iron core group 30 also use the base line 50 as a boundary, and the part of the inner edge surfaces located in the arc surface area 51 There is a second arc surface 341 coaxial with the central iron core 32 and adjacent to the first arc surface 241, and located in the planar area 52, there is a second side plate 22 is perpendicular to the second planar portion 342 adjacent to the first planar portion. The second arc surface portion 341 and the second planar portion 342 are also connected to each other.

As shown in FIG. 9 , the second arc surfaces 342 of the two inner surfaces 34 of the core set 30 are circular arc surfaces coaxial with the coil set 40 , so that the second arc A certain gap can be maintained between the surface 342 and the outer side wall of the coil group 40, so that the inner edge surface 34 of the coil group is in the section of the arc surface area 51, and the inner edge surface 34 of the coil group 40 is in contact with the outer wall of the coil group 40. The gap between the outer sides can be kept as close as possible to increase the leakage inductance generated by the mutual induction between the coil set 40 and the iron core set 30 . The purpose of setting the first plane part 242 and the second plane part 342 on the isolation plate 24 of the insulating frame body 20 and the inner edge surface 34 of the core group 30 is to make the insulating frame body 20 compatible with the When the winding post 14 is combined, the isolation plate 24 of the two core accommodating grooves 23 will not interfere with the outside of the coil group 40 because of the existence of this flat part, so that the insulation The frame body 20 can be assembled on the winding post 14 from the side direction of the winding seat 10 .

As shown in Fig. 7, Fig. 8 and Fig. 9, the further technical features of the insulating frame body 20 and the iron core group 30 of the utility model are that the iron core group 30 and the insulating frame body 20 adopt an asymmetric the design of. As shown in the figure, the central core 32 of the core set 30 and the centerlines of the first arcuate surface 241 and the second arcuate surface 341 (that is, the base line 50 ) are not located on the iron core. The center of the core group 30 and the insulating frame body 20 is offset by a distance toward the direction of the second side plate 22, so that the height d1 of the arc surface area 51 is greater than the plane The height d2 of the area 52 . The purpose of this design in the present invention is to make the height of the side iron core 33 of the iron core group 30 located in the arc surface area 51 greater than the height of the side iron core 33 located in the plane area 52 height, thereby increasing the length ratio of the second arc surface 341 to the entire inner surface 34, so as to achieve the purpose of increasing the leakage inductance induced by the two side iron cores 33 of the iron core group 30 and the coil group .

Embodiment two

As shown in Figures 10 to 14, it is the second embodiment of the present utility model, which discloses a horizontal transformer structure, which includes: a winding seat 60, an insulating frame 70, an iron core group 80 and A coil assembly 90 wound on the winding base 60 .

The winding base 60 has a mounting base 61 , and the mounting base 61 has a front base body 611 and a rear base body 612 . The bottom surfaces of the front base body 611 and the rear base body 612 are provided with a plurality of terminals 63 and can be mounted on a mounting plane 62 (as shown in FIG. 14 ). It must be noted here that the bottom surface of the mounting seat 61 may also be configured without terminals 63 .

A horizontal winding column 64 is further disposed on the mounting base 61 , and the winding column 64 has a centerline 67 and a through hole 66 passing through the winding column 64 along the centerline. In the second embodiment, the winding post 64 is arranged on the mounting base 61 in a direction parallel to the installation plane 62, and a first partition is provided at both ends of the winding post 64 641 , a second partition 642 , and an intermediate partition 643 disposed between the first partition 641 and the second partition 642 . The first spacer 641, the middle spacer 643 and the second spacer 642 divide the outer surface of the winding column 64 into a first winding area 651 and a second winding area 652. A first coil and a second coil (not shown in the figure) are respectively wound on the first winding area 651 and the second winding area 652 .

As shown in Figures 11, 12 and 13, the insulating frame 70 has a first side plate 71 and a second side plate 72 parallel to the first side plate 71, and two Both sides of the insulating frame 70 are connected to the iron core receiving groove 73 between the first side plate 71 and the second side plate 72 . The insulating frame 70 is fitted on the winding post 64 in a direction that the second side plate 72 is parallel to the installation plane 62 and faces the side of the winding post 64 . And when the insulating frame body 70 is assembled on the winding post 64, the two core accommodating grooves 73 are parallel to the center line 67 of the winding post 64 and symmetrically arranged on the winding post 64. The two outer sides of the coil group 90 (as shown in FIG. 14 ).

As shown in FIG. 11 , the winding post 64 is provided with a slot 644 on both sides of the first partition 641 and the middle partition 643 respectively, and the inner surface of the insulating frame 70 corresponds to the The positions of the card slots 644 are provided with a protruding plate 75 respectively, and the protruding plates 75 can be inserted into the card slots 644, so that the insulating frame body 70 is guided by the card slots 644 and the protruding plates 75. and positioning, it can be smoothly installed on the winding posts 64 .

As shown in Figure 14, after the transformer assembly of Embodiment 2 of the present utility model is completed, the insulating frame 70 is arranged between the core group 80 and the coil group 90, so that the coil group 90 is insulated from the core set 30 . As shown in Fig. 11 and Fig. 13, the two iron core accommodating grooves 73 of the insulating frame body 70 respectively have an isolation plate 74, and the isolation plate 74 and the first side plate 71 and the The second side plate 72 together constitutes the bottom surface and two sides of the iron core accommodating groove 23, and as shown in Figure 14, when the transformer of the present invention is assembled, the isolation plate 74 is located The two sides of the group 90 are located in the gap between the coil group 90 and the iron core group 80 .

As shown in FIG. 11 , the core set 80 is composed of two detachable core units 81 . The two-core unit 81 is an E-shaped core structure, which has a cylindrical central core 82, two side cores 83 parallel to the central core 82, and a side core 83 parallel to the central core 82. The core 82 and the iron cores 83 on both sides are perpendicular to each other, and are connected to the central iron core 82 and the plate body 85 at one end of the iron cores 83 on both sides. As shown in Figure 11 and Figure 14, when the core unit 81 is assembled on the winding post 64 and the insulating frame 80, the central iron core 82 is inserted into the winding post 64 through hole 66, and the two side iron cores 83 are accommodated in the two iron core accommodating grooves 73 of the insulating frame 70, and the inside of the two side iron cores 83 The side surfaces respectively have an inner edge surface 84 adjacent to the isolation plate 74 of the iron core accommodating groove 73 .

As shown in Figures 12 and 13, the insulating frame body 70 and the iron core group 80 further have a center passing through the center iron core 82 and connecting with the first side plate 71 and the second side plate 72 parallel to the base line 86, and as shown in FIG. The area between the first side plates 71 is defined as an arc surface area 87, the insulating frame body 70 and the core set 80 are located below the base line 86 until the area between the second side plates 72 Defined as a planar area 88 .

And as shown in FIG. 13 , the two isolation plates 74 of the insulating frame 70 are separated by the base line 86 , and the part located in the arc surface area 87 presents a connection with the central iron. The core 82 is concentric with the arc-shaped first arc surface 741, and the isolation plate 74 is located in the plane area 88, which is a first plane portion 742 perpendicular to the second side plate 72. . At the same time, the first arc surface portion 741 and the first planar portion 742 are connected to each other.

At the same time, the two side iron cores 83 of the iron core group 80 , the inner edge surfaces 84 adjacent to the isolation plate 74 are also separated by the base line 86 , and the inner edge surfaces 84 The part located in the arc surface area 87 has a second arc surface area 841 coaxial with the central iron core 82 and adjacent to the first arc surface area 741, and located in the planar area 88, Then there is a second planar portion 842 perpendicular to the second side plate 72 and adjacent to the first planar portion 742 . The second arc surface portion 841 and the second planar portion 842 are also connected to each other.

Wherein, the isolation plate 74 of the insulating frame 70 and the inner surface 84 of the iron core group 80 adopt the above-mentioned arc surface and plane combination structure, the main purpose is to make the insulating frame 70 from the There will be no interference when the upper side of the winding seat 60 is assembled and fitted on the winding post 64, so that the insulating frame 70 can adopt an integrally formed structure without the need for an insulating shell as in the conventional transformer structure. The body is disassembled into a multi-piece structure to achieve the purpose of simplifying the structure of the insulating frame body 70 . On the other hand, with the aid of the arc-shaped curved surface structure of the inner surface 84 of the iron core group 80, it induces an increase in leakage inductance with the coil group 90, so as to maintain the leakage inductance of the control transformer within a certain range purpose within.

In addition, as shown in Fig. 12, Fig. 13 and Fig. 14, the further technical feature of the insulating frame body 70 and the core group 80 of the present invention is that the central core 82 of the core group 80 and the The central positions of the first arc surface 741 and the second arc surface 841 are shifted toward one side of the second side plate 82 of the insulating frame 70 by a distance, so that the arc area 87 The height d1 is greater than the height d2 of the planar region 88 . Since the central iron core 82 of the iron core group 80 is offset from the center of the second arc surface 841, the height of the side iron core 83 of the iron core group 80 located in the arc surface area 87 is greater than the The height of the side iron core 83 located in the plane area 88 increases the length ratio of the second arcuate surface 841 to the entire inner surface 84 so as to increase the height of the two sides of the iron core group 80 The iron core 83 and the coil group 90 induce leakage inductance.

The design of the above-mentioned structure of the utility model can simultaneously improve the leakage inductance generated by the mutual induction between the iron core group and the coil group of the transformer, and at the same time can make the insulating frame body and the winding base There will be no interference when the columns are combined, so that the insulating frame can be assembled on the winding post from a single side, so that the insulating frame can be constructed in one piece, so it can solve the problem of conventional transformer structure. The insulation frame is disassembled into multiple pieces and assembled on the winding base from different directions, which makes the structure of the transformer insulation case complex.

The above descriptions are only preferred feasible embodiments of the present utility model, and are not intended to limit the scope of patent protection of the present utility model. Therefore, all equivalent technical changes made by using the description of the utility model and the contents of the accompanying drawings are included in this utility model. new type of protection.

Claims (8)

1. A transformer structure, characterized in that: A winding seat, the winding seat has a winding column, and the winding column has a centerline and a through hole passing through the winding column along the centerline; A coil group, the coil group is wound on the outside of the winding post and coaxial with the center line, the coil group has a first coil group and a second coil group; An insulating frame body, the insulating frame body is movably sleeved on the winding column of the winding seat, the insulating frame has a first side plate, a parallel to the first side plate The second side plate, and two iron core accommodating grooves respectively arranged on both sides of the insulating frame and connected between the first side plate and the second side plate, wherein when the insulating When the frame is sleeved on the winding post, the two iron core accommodating grooves are symmetrical to the center line of the winding post and symmetrically located on both sides of the coil group. The two iron core accommodating grooves respectively have an isolation plate adjacent to the sides of the coil group; and An iron core group, the iron core group is composed of two iron core units, the iron core group has a central iron core inserted into the through hole of the winding post and two The central iron cores are parallel to each other and are accommodated in the side iron cores in the iron core accommodating groove, and the two side iron cores respectively have an inner edge surface adjacent to the isolation plate of the iron core accommodating groove ; Wherein, the insulating frame body is integrally formed, and is assembled on the winding post with the second side plate facing the winding post. 2. The transformer structure according to claim 1, wherein the winding post further has a mounting base, and the mounting base further has a front base body and a rear base body, and is mounted on the mounting base The bottom surface has an installation plane; the winding post is arranged on the mounting base in a direction perpendicular to the installation plane; the winding post further has a first partition located at the top of the winding post . A second partition arranged at the bottom end of the winding column, an intermediate partition arranged between the first partition and the second partition; The insulating frame further has a connecting portion connected to the top ends of the two iron core accommodating grooves, so that the top ends of the two iron core accommodating grooves form a closed shape; the bottom ends of the two iron core accommodating grooves are open shape, and an engaging portion bent inward is respectively provided on the inner side of the bottom surface of the two iron core accommodating grooves; The two sides of the upper edge of the front seat body of the mounting seat are respectively provided with a notch corresponding to the bottom ends of the two iron core accommodating grooves, and the two notches are connected to the two sides of the second partition The bottom surfaces together form two guide grooves; Wherein when the insulating frame is assembled on the winding post, the connection part of the insulating frame is connected with the first partition, and the two engaging parts at the bottom ends of the two iron core accommodating grooves snapped into the two guide grooves. 3. The transformer structure according to claim 2, wherein the insulating frame and the core group further have a center line passing through the central core and connected to the first side plate and the second Two side plates are parallel to the base line, and the area between the first side plate and the base line is defined as an arc area, and the area between the second side plate and the base line is defined as a plane area; Wherein, the two isolation plates respectively have a first arc surface located in the arc area and coaxial with the center line and a first arc surface located in the plane area and connected to the first side plate and the first side plate and The first planar parts of the second side plates are perpendicular to each other; the two inner surfaces respectively have a second arcuate part located in the arcuate area and a second planar part located in the planar area, the first The second arc surface is coaxial with the center line and adjacent to the first arc surface, and the second plane portion is perpendicular to the first side plate and the second side plate and is connected to the first The planar parts are adjacent to each other. 4. The transformer structure according to claim 3, wherein the height of the arcuate area is higher than that of the planar area, so that the second arcuate portion of the inner edge of the core group The height is greater than the height of the second planar portion. 5 . The transformer structure according to claim 4 , further comprising: a plurality of terminals disposed on the bottom surface of the front base body and the rear base body of the mounting base. 5 . 6. The transformer structure according to claim 1, wherein the winding post further has a mounting seat, and the bottom surface of the mounting seat has a mounting plane; the winding post is parallel to the installation The direction of the plane is set on the mounting seat, and the winding post further has a first partition arranged at one end of the winding post, and a spacer provided at the winding post opposite to the first partition The second partition at the other end, an intermediate partition between the first partition and the second partition, and at least one slot on the first, second or third partition; The insulating frame is fitted on the winding post in a direction in which the second side plate faces the winding post, and the inner side of the insulating frame is further provided with at least one card The grooves are connected with the protruding plate, thereby positioning the insulating frame on the winding post. 7. The transformer structure according to claim 6, wherein the insulating frame and the iron core group further have a center line passing through the central iron core and connected to the first side plate and the second Two side plates are parallel to the base line, and the area between the first side plate and the base line is defined as an arc area, and the area between the second side plate and the base line is defined as a plane area; Wherein, the two isolation plates respectively have a first arc surface located in the arc area and coaxial with the center line and a first arc surface located in the plane area and connected to the first side plate and the first side plate and The first planar parts of the second side plates are perpendicular to each other; the two inner surfaces respectively have a second arcuate part located in the arcuate area and a second planar part located in the planar area, the first The second arc surface is coaxial with the center line and adjacent to the first arc surface, and the second plane portion is perpendicular to the first side plate and the second side plate and is connected to the first the planar parts are adjacent; The height of the arcuate area is higher than the height of the plane area, so that the height of the second arcuate portion of the inner surface of the core group is greater than the height of the second plane portion. 8. The transformer structure according to claim 7, further comprising: a plurality of terminals disposed on the bottom surface of the mounting base.