CN217086350U - Transformer structure - Google Patents

Abstract

A transformer structure comprises a winding frame, an iron core unit and a wire unit. The bobbin has a hollow body, an outer edge and a limiting part, the iron core unit passes through the body and surrounds the bobbin, and the outer edge protrudes out of the body in a horizontal direction. The position limiter protrudes out of the outer edge part towards the horizontal direction and is used for limiting the lead unit to a preset position.

Description

Transformer structure

Technical Field

The utility model relates to a transformer structure. More particularly, the present invention relates to a transformer structure having a bobbin.

Background

In the assembly process of a general transformer, a wire usually has to be wound on a bobbin, but due to the limitation of the conventional bobbin structure, it is often difficult to increase the winding space, so that the performance of the transformer cannot be effectively improved.

In view of the above, how to improve the conventional transformer structure to improve the performance thereof has become an important issue for researchers in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned conventional problems, an embodiment of the present invention provides a transformer structure, which includes a bobbin, an iron core unit and a wire unit. The winding frame is provided with a hollow body, an outer edge part and a limiting part, the body is provided with a central shaft, the outer edge part protrudes out of the body from one end of the body towards a horizontal direction, the limiting part is formed on a connecting surface of the outer edge part, the limiting part protrudes out of the outer edge part towards the horizontal direction, and the horizontal direction is perpendicular to the central shaft.

The core unit passes through the body and surrounds the bobbin, wherein the connecting surface of the outer edge portion faces the core unit. The wire unit is wound on the body, wherein the limiting part limits a predetermined position of the wire unit on the winding frame to prevent the wire unit from falling off the winding frame, and a part of the wire unit surrounds the outer edge part to enable the part of the wire unit to be positioned between the iron core unit and the outer edge part in the horizontal direction.

In an embodiment, the transformer structure further includes an insulating sheet disposed on the outer edge portion for electrically isolating the core unit and the wire unit.

In one embodiment, the insulation sheet protrudes from the wire unit in the horizontal direction.

In an embodiment, the insulation sheet is made of a flexible material and is sandwiched between the outer edge portion and the core unit.

In one embodiment, the insulation sheet is an insulation tape or mylar sheet.

In one embodiment, the wire unit overlaps the outer edge portion when viewed along the horizontal direction.

In one embodiment, the body further has two outer edges, the outer edges are located on opposite sides of the body, and the wire unit partially overlaps the outer edges when viewed in the horizontal direction.

In one embodiment, the outer edge extends 0.5 to 3mm from the body in the horizontal direction.

In one embodiment, the limiting portion is higher than the outer edge portion.

In an embodiment, the transformer structure further includes a base connected to the body, and the lead unit is wound between the limiting portion and the base.

Drawings

Fig. 1 shows an exploded view of a transformer structure 100 according to an embodiment of the invention;

FIG. 2 illustrates a perspective view of the transformer structure 100 shown in FIG. 1 after assembly;

FIG. 3 shows a cross-sectional view taken along line A1-A2 of FIG. 2;

fig. 4 shows a perspective view of the bobbin B of fig. 1;

fig. 5 shows another perspective view of the bobbin B of fig. 1;

fig. 6 shows a cross-sectional view of the bobbin B of fig. 4 and 5;

fig. 7 is a perspective view of the inner wire portion W1 of the wire unit W wound around the body B1 of the bobbin B;

fig. 8 is a perspective view of the outer wire portion W2 of the wire unit W wound around the bobbin B and protruding beyond the outer edge portion B2;

fig. 9 is a perspective view of the bobbin B with the insulating sheets S1 and S2 and the wire unit W assembled;

fig. 10 is a sectional view of the bobbin B after the insulating sheets S1 and S2 and the wire unit W are assembled, and fig. 11 is a sectional view taken along line A3-a4 in fig. 2.

[ notation ] to show

100 transformer structure

B, a winding frame

B0 center shaft

B1 body

B2 outer edge part

B21 connecting surface

B3 limiting part

B4 stand for feet

B5 Pin

C iron core unit

C1 Upper iron core

C2 lower iron core

S1 insulating sheet

S2 insulating sheet

W is a wire unit

W1 inner lead part

W2 external lead part

Detailed Description

The following describes a transformer structure according to an embodiment of the present invention. It should be appreciated, however, that the embodiments of the invention provide many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of a preferred embodiment of the invention as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are directions with reference to the attached drawings only. Therefore, the directional terms used in the embodiments are used for description and are not intended to limit the present invention.

Referring to fig. 1, 2, 3, 4, 5, and 6, fig. 1 shows an exploded view of a transformer structure 100 according to an embodiment of the present invention, fig. 2 shows a perspective view of the transformer structure 100 shown in fig. 1 after being assembled, fig. 3 shows a cross-sectional view along a line a1-a2 in fig. 2, fig. 4 shows a perspective view of a bobbin B in fig. 1, fig. 5 shows another perspective view of the bobbin B in fig. 1, and fig. 6 shows a cross-sectional view of the bobbin B in fig. 4 and 5.

As shown in fig. 1, 2 and 3, a transformer structure 100 according to an embodiment of the present invention mainly includes an iron core unit C, a bobbin B, a wire unit W and two insulation sheets S1 and S2, wherein the iron core unit C includes an upper iron core C1 and a lower iron core C2 connected to each other, and the wire unit W includes an inner wire portion W1 and an outer wire portion W2.

The wire unit W is wound on the bobbin B, and the insulation sheets S1 and S2 are respectively disposed on the upper and lower sides of the bobbin B and between the core unit C and the wire unit W to electrically isolate the wire unit W and the core unit C, thereby preventing a flashover (flash).

As can be clearly seen from fig. 1, 3, 4, 5 and 6, the bobbin B has a hollow body B1, and the upper and lower sides of the body B1 are respectively formed with arc-shaped and outwardly protruding outer edges B2, wherein the core unit C extends through the center of the body B1 and surrounds the wire unit W and the bobbin B after assembly (as shown in fig. 3).

It should be noted that the body B1 of the bobbin B has a central axis B0, and the outer edge portion B2 protrudes from the body B1 in the horizontal direction from both ends of the body B1. In addition, at least one stopper B3 is formed on the connecting surface B21 of the outer edge portion B2 on the top side of the body B1, wherein the stopper B3 protrudes from the outer edge portion B2 in the horizontal direction, and the height of the stopper B3 in the Z-axis direction is higher than that of the outer edge portion B2.

Specifically, the horizontal direction is perpendicular to the center axis B0 and parallel to the XY plane, and the center axis B0 is parallel to the Z axis and perpendicular to the XY plane. In the present embodiment, the outer edge portion B2 extends from the main body B1 of the bobbin B to the outside by about 0.5 to 3mm, preferably 1 to 2 mm.

Referring to fig. 1 to 6, another outer edge portion B2 on the bottom side of the bobbin B also protrudes out of the body B1 in the horizontal direction, and two foot seats B4 (see fig. 5) are formed on the connecting surface B21 under the outer edge portion B2, wherein a pin B5 is disposed on the bottom side of one foot seat B4, so as to fix the wire.

It should be understood that the connecting surface B21 of the two outer edge portions B2 on the top and bottom sides of the bobbin B faces the core unit C after assembly (as shown in fig. 3). As mentioned above, the present embodiment can increase the winding space around the bobbin B through the stepped structure (as shown in fig. 6) formed by the outer edge portion B2 and the limiting portions B3 and B4, and can stably limit and fix the wire unit W at a predetermined position on the bobbin B, thereby effectively preventing the wire unit W from falling off from the bobbin B.

Referring to fig. 7, 8, 9, 10 and 11 together, fig. 7 is a perspective view of the inner wire portion W1 of the wire unit W wound around the body B1 of the bobbin B, fig. 8 is a perspective view of the outer wire portion W2 of the wire unit W wound around the bobbin B and protruding from the outer edge portion B2, fig. 9 is a perspective view of the insulating sheets S1 and S2 and the wire unit W assembled to the bobbin B, fig. 10 is a cross-sectional view of the insulating sheets S1 and S2 and the wire unit W assembled to the bobbin B, and fig. 11 is a cross-sectional view taken along line A3-a4 in fig. 2.

As shown in fig. 7, in the process of winding the wire unit W around the bobbin B, the inner wire portion W1 of the wire unit W is first wound and confined in the groove formed by the body B1 and the two outer edge portions B2 of the bobbin B.

As can be seen from fig. 8, 9 and 10, after the wire unit W is completely wound around the bobbin B, the outer wire portion W2 of the wire unit W protrudes beyond the outer edge portion B2 of the bobbin B, and the outer wire portion W2 of the wire unit W partially overlaps the outer edge portions B2 of the upper and lower sides of the bobbin B when viewed in the horizontal direction (X-axis direction) (as shown in fig. 10).

It should be noted that, when the wire unit W is completely mounted on the bobbin B, the outer wire portion W2 of the wire unit W surrounds the inner wire portion W1 and the outer edge portion B2 of the bobbin B, and the outer wire portion W2 of the wire unit W is limited between the limiting portion B3 and the foot seat B4 in the Z-axis direction, so as to fix the wire unit W at a predetermined position on the bobbin B.

Next, two insulation sheets S1 and S2 may be attached to the connection surface B21 of the outer edge portion B2 of the bobbin B (as shown in fig. 9 and 10). In this embodiment, the insulation sheets S1 and S2 are made of a soft material (e.g., an insulation tape or mylar tape) and are sandwiched between the outer edge portion B2 of the bobbin B and the core unit C, wherein the maximum width of the insulation sheets S1 and S2 in the horizontal direction is greater than the maximum width of the outer edge portion B2 and the maximum width of the wire unit W in the horizontal direction, i.e., the insulation sheets S1 and S2 protrude from the outer edge portion B2 and the wire unit W in the horizontal direction (fig. 9), so as to completely cover the upper and lower sides of the wire unit W, thereby preventing a flashover (flash) between the wire unit W and the core unit C.

As can be seen from fig. 3 and 11, after the core unit C, the insulation sheets S1, S2 and the wire unit W are mounted on the bobbin B to form the transformer structure 100, the winding height of the outer wire portion W2 of the wire unit W in the Z-axis direction is significantly greater than the winding height of the inner wire portion W1 in the Z-axis direction, so that not only the winding number of the whole wire unit W is greatly increased to improve the performance of the transformer structure 100, but also the outer wire portion W2 of the wire unit W is limited by the limiting portion B3 and the foot B4 in the Z-axis direction, so that the wire unit W does not fall off from the bobbin B, and the effect of fixing the wire can be achieved.

Specifically, in the present embodiment, the winding space around the bobbin B can be increased to improve the overall performance of the transformer structure 100 by making a portion of the wire unit W (the outer wire portion W2) surround the outer edge portion B2, wherein the portion of the wire unit W (the outer wire portion W2) is located between the core unit C and the outer edge portion B2 of the bobbin B in the horizontal direction (fig. 3).

Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but rather, the process, machine, manufacture, composition of matter, means, methods and steps described in connection with the embodiment illustrated herein will be understood to one skilled in the art from the disclosure to which this invention pertains. Accordingly, the scope of the present invention includes the processes, machines, manufacture, compositions of matter, means, methods, or steps described above. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present invention also includes combinations of the respective claims and embodiments.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A transformer structure, comprising:

a bobbin, having a hollow body, an outer edge and a position-limiting part, wherein the body has a central axis, the outer edge protrudes from one end of the body to a horizontal direction, the horizontal direction is perpendicular to the central axis, and the position-limiting part is formed on a connecting surface of the outer edge, wherein the position-limiting part protrudes from the outer edge to the horizontal direction;

an iron core unit passing through the body and surrounding the bobbin, wherein the connection surface of the outer edge portion faces the iron core unit; and

and the limiting part limits a set position of the lead unit on the winding frame so as to prevent the lead unit from falling off the winding frame, and one part of the lead unit surrounds the outer edge part so that the part of the lead unit is positioned between the iron core unit and the outer edge part in the horizontal direction.

2. The transformer structure of claim 1, further comprising an insulating sheet disposed on the outer edge portion and located between the core unit and the wire unit.

3. The transformer structure of claim 2, wherein the insulation sheet protrudes from the lead unit in the horizontal direction.

4. The transformer structure of claim 2, wherein the insulation sheet is made of a soft material and is sandwiched between the outer edge portion and the core unit.

5. The transformer structure of claim 2, wherein the insulating sheet is an insulating tape or mylar sheet.

6. The transformer structure according to claim 1, wherein the lead unit partially overlaps the outer edge portion when viewed in the horizontal direction.

7. The transformer structure of claim 1, wherein the body further has two outer edge portions located at opposite sides of the body, and the lead unit partially overlaps the outer edge portions when viewed in the horizontal direction.

8. The transformer structure of claim 1, wherein the outer edge extends from the body to the horizontal direction by 0.5-3 mm.

9. The transformer structure of claim 1, wherein the limiting portion is higher than the outer edge portion.

10. The transformer structure of claim 1, further comprising a base connected to the body, wherein the lead unit is wound between the position-limiting portion and the base.

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