CN212783005U

CN212783005U - Splicing structure of transformer

Info

Publication number: CN212783005U
Application number: CN202021513800.0U
Authority: CN
Inventors: 李胜
Original assignee: Shoubang Electronics Suzhou Co ltd
Current assignee: Shoubang Electronics Suzhou Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-23
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a mosaic structure of transformer, including the line frame, with two E-shaped spare of line frame complex, the line frame is equipped with terminal and winding portion, and the terminal on the line frame is bent to the winding portion of line frame. The direction of bending of terminal among the prior art is opposite to the terminal the top surface of transformer is outstanding to the direction of bending of terminal, leads to the whole high increase of transformer. And the utility model discloses the terminal on the line frame is bent to the wire winding part of line frame, so, the terminal is in between the top surface and the bottom surface of transformer, can not increase the height of transformer. Compared with the prior art, the utility model discloses can reduce the whole height of transformer.

Description

Splicing structure of transformer

Technical Field

The utility model relates to an electronic product, concretely relates to transformer.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). A transformer applied to electronic products belongs to a small transformer. Such as transformers in televisions, displays. With the trend of light and thin electronic products, the transformers tend to be more miniaturized.

The coil of the miniature transformer is generally wound on a coil holder, and the coil holder is matched with an iron core to form the transformer. The iron core is generally formed by splicing two E-shaped pieces, so that the spliced part of the two E-shaped pieces needs to be contacted with the ground as far as possible, otherwise, the magnetic conduction effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: the height of the transformer is reduced.

In order to solve the technical problem, the utility model provides a following technical scheme: the splicing structure of the transformer comprises a wire frame and two E-shaped pieces matched with the wire frame, wherein the wire frame is provided with a terminal and a winding part, and the terminal on the wire frame is bent towards the winding part of the wire frame.

The direction of bending of terminal among the prior art is opposite to the terminal the direction of bending, the terminal among the prior art is bent the top surface that the part is outstanding transformer, leads to the whole high increase of transformer. And the utility model discloses the terminal on the line frame is bent to the wire winding part of line frame, so, the terminal is in between the top surface and the bottom surface of transformer, can not increase the height of transformer. Compared with the prior art, the utility model discloses can reduce the whole height of transformer.

As an improvement, the top and the bottom of the wire frame are respectively provided with a positioning groove, the two E-shaped pieces are matched with the two positioning grooves in a one-to-one mode, the middle structures of the two E-shaped pieces are abutted, the outer structures of the two E-shaped pieces are abutted, each side wall of a pair of side walls of each positioning groove is V-shaped, and each side wall of a pair of side walls of each E-shaped piece is V-shaped; the pair of side walls of the wire frame are arc-shaped, the inner side wall of each outer structure of each E-shaped piece matched with the arc-shaped side walls of the wire frame is arc-shaped, and the curvature of the arc-shaped wire frame side walls is larger than that of the inner side wall of each outer structure of each E-shaped piece.

The technical problem solved by the improvement is as follows: the splicing positions of the two E-shaped pieces of the transformer are in surface contact as much as possible, and meanwhile, the stability of the whole transformer structure is guaranteed.

Each E-shaped piece is provided with a middle structure and two outer structures, the two E-shaped pieces are spliced together, the middle structures of the two E-shaped pieces are abutted, and the outer structures of the two E-shaped pieces are abutted to form a Chinese character 'ri' after rotating by 90 degrees for magnetic conduction. The splicing part of the two E-shaped pieces needs to be in surface contact, so that a good magnetic conduction effect can be ensured. Therefore, when the two E-shaped pieces are spliced, the wire frame does not apply force to the middle structure and the outer structure of any one E-shaped piece, and therefore the spliced positions of the two E-shaped pieces can be ensured to be in surface contact. The utility model discloses a curved line frame lateral wall's camber is greater than the camber of each outer structure's of each E-shaped spare inside wall, so, even line frame lateral wall and outer structure's inside wall contact, also be line contact, it is little to the face contact influence of two E-shaped spares, moreover, can be clearance fit between line frame lateral wall and the outer structure's the inside wall.

Because the contact between the inside wall of the outer structure of line frame lateral wall and E-shaped piece is probably line contact, probably clearance fit, consequently, the cooperation relation between line frame and two E-shaped pieces is unstable, and two E-shaped pieces can move line frame relatively, for this reason, the utility model discloses design into the V-arrangement with each lateral wall in a pair of lateral wall of each constant head tank, design into the V-arrangement with each lateral wall in a pair of lateral wall of each E-shaped piece, the constant head tank lateral wall of V-arrangement and the E-shaped piece lateral wall cooperation of V-arrangement can realize the stable cooperation of line frame and two E-shaped pieces.

To sum up, the utility model discloses make the concatenation department face contact of two E shape pieces of transformer, simultaneously, guarantee whole transformer stable in structure.

Drawings

The invention will be further explained with reference to the drawings:

fig. 1 is a schematic diagram of a splicing structure of a transformer;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic view of the wire stand 10 of fig. 2 viewed from below;

fig. 4 is a schematic view of the transformer shown in fig. 1, viewed from the lower right.

The symbols in the drawings illustrate that:

10. a wire frame; 11. a through hole; 12. a top plate; 120. a first positioning groove; 121. a left side wall of the first positioning groove; 122. a right side wall of the first positioning groove; 13. a base plate; 130. a second positioning groove; 131. the left side wall of the second positioning groove; 132. the right side wall of the second positioning groove; 14. a wire winding portion; 15. a terminal; 16. opening the gap; 171. a front side wall of the wire rack; 172. a rear side wall of the wire rack;

20. a first E-shaped piece; 21. a midsection structure of a first E-shaped piece; 22. an outer structure of the first E-shaped piece; 23. a left side wall of the first E-shaped piece; 24. a right side wall of the first E-shaped piece;

30. a second E-shaped piece; 31. a second E-shaped piece middle structure; 32. an outer structure of a second E-shaped piece; 33. a left side wall of the second E-shaped piece; 34. the right side wall of the second E-shaped piece.

Detailed Description

With reference to fig. 1 and 2, the splicing structure of the transformer includes a bobbin 10 and two E-shaped members engaged with the bobbin, the top and the bottom of the bobbin are respectively provided with a positioning slot, the two E-shaped members are engaged with the two positioning slots in a one-to-one manner, the middle structures of the two E-shaped members are abutted, the outer structures of the two E-shaped members are abutted, each of a pair of sidewalls of each positioning slot is V-shaped, and each of a pair of sidewalls of each E-shaped member is V-shaped; the pair of side walls of the wire frame are arc-shaped, the inner side wall of each outer structure of each E-shaped piece matched with the arc-shaped side walls of the wire frame is arc-shaped, and the curvature of the arc-shaped wire frame side walls is larger than that of the inner side wall of each outer structure of each E-shaped piece.

Two E-shaped members are provided as a first E-shaped member 20 and a second E-shaped member 30.

The first E-shaped element is provided with a central structure 21 and two outer structures 22, which are located at the front and rear sides of the central structure, giving the first E-shaped element an E-shape. The inner side walls of the two outer structures 22 of the first E-shaped member are arc-shaped, and the two outer structures 22 of the first E-shaped member are symmetrical front to back.

The second E-shaped element is provided with a central structure 31 and two outer structures 32, which are located at the front and rear sides of the central structure, giving the second E-shaped element an E-shape. The inner side walls of the two outer structures 32 of the second E-shaped member are arc-shaped, and the two outer structures 32 of the second E-shaped member are symmetrical front to back.

Each of the pair of side walls of the first E-shaped member 20 is V-shaped, specifically: a pair of side walls are positioned on the left and right sides of the first E-shaped piece, wherein the left side wall 23 and the right side wall 24 are both V-shaped, and the left side wall of the V-shape and the right side wall of the V-shape are bilaterally symmetrical.

Each of the pair of sidewalls of the second E-shaped member 30 is V-shaped, specifically: a pair of side walls are located on the left and right sides of the second E-shaped piece, wherein the left side wall 33 and the right side wall 34 are both V-shaped, and the left side wall of the V-shape and the right side wall of the V-shape are bilaterally symmetrical.

The positioning grooves at the top and bottom of the wire rack 10 are respectively a first positioning groove 120 for positioning the first E-shaped member 20 and a second positioning groove 130 for positioning the second E-shaped member 30.

The first positioning groove 120 is through from front to back, the first positioning groove is provided with a left side wall 121 and a right side wall 122 to form a pair of side walls, and the left side wall 121 and the right side wall 122 are both V-shaped and symmetrical.

Referring to fig. 3, the second positioning groove 130 is through from front to back, and has a left sidewall 131 and a right sidewall 132 forming a pair of sidewalls, and the left sidewall 131 and the right sidewall 132 are both V-shaped and symmetrical.

The pair of side walls of the wire rack 10 are arc-shaped, wherein the pair of side walls of the wire rack refer to the front side wall 171 and the rear side wall 172 of the wire rack 10, and the front side wall 171 and the rear side wall 172 of the wire rack 10 are symmetrical in front and rear.

The center of the wire frame 10 is provided with a through hole 11.

In actual production, the coil is wound on the bobbin 10 and is positioned at the periphery of the through hole 11. The first E-shaped piece 20 is inserted from the top of the wire frame 10, the second E-shaped piece 30 is inserted from the bottom of the wire frame 10, the

middle structures

21 and 31 of the first E-shaped piece and the second E-shaped piece are matched in the through hole 11, and the middle structures of the two E-shaped pieces are abutted and in surface contact. Synchronously, the two outer structures 22 of the first E-shaped piece are matched on the front side and the rear side of the wire frame 10, the two outer structures 32 of the second E-shaped piece are matched on the front side and the rear side of the wire frame 10, and the two outer structures 22 of the first E-shaped piece are abutted and in surface contact with the two outer structures 32 of the second E-shaped piece. Because the front side wall 171 and the rear side wall 172 of the wire frame 10 are both arc-shaped, the inner side walls of the two outer structures 22 of the first E-shaped piece are arc-shaped, the inner side walls of the two outer structures 32 of the second E-shaped piece are arc-shaped, and the curvature of the front side wall 171 and the rear side wall 172 of the wire frame 10 is greater than the curvature of the two outer structures 22 of the first E-shaped piece and the curvature of the two outer structures 32 of the second E-shaped piece, even if the front side wall 171 and the rear side wall 172 of the wire frame 10 are in contact with the inner side walls of the outer structures of the two E-shaped pieces, the front side wall 171 and the rear side wall 172 are in front-back contact and belong to line contact, the contact does not affect the upper and lower surfaces of the two E-shaped pieces, moreover, a manufacturer can completely control the sizes of the front side wall 171 and the; alternatively, the assembler can use a rasp or grinder to grind the front and rear walls 171, 172 of the bobbin 10 into a clearance fit with the inner walls of the outer structures of the two E-shaped members, so that the bobbin 10 does not exert a forward and backward force on the outer structures of the two E-shaped members and the two E-shaped members that fit up and down cannot make surface contact.

And synchronously matching the middle structure 21 of the first E-shaped piece and the middle structure 31 of the second E-shaped piece in the through hole 11, the left side wall 23 and the right side wall 24 of the first E-shaped piece 20 are respectively matched with the left side wall 121 and the right side wall 122 of the first positioning groove 120, and the left side wall 33 and the right side wall 34 of the second E-shaped piece 30 are respectively matched with the left side wall 131 and the right side wall 132 of the second positioning groove 130, so that stable matching of the two E-shaped pieces and the wire frame 10 is realized. And winding adhesive tapes on the peripheries of the two E-shaped pieces, fixing the two E-shaped pieces and further fixing the whole transformer.

As a modification, the cross-sectional shape of the through-hole 11 is an ellipse, and accordingly, the cross-sectional shapes of the central structure 21 of the first E-shaped member 20 and the central structure 31 of the second E-shaped member 30 are ellipses. Compared with a through hole with a square or circular cross section, the through hole 11 with an oval cross section can effectively prevent the middle structures of the two E-shaped pieces and the through hole from moving relatively front and back and left and right, and prevent the middle structures of the two E-shaped pieces and the through hole from rotating relatively, so that the stability of the transformer is improved.

The wire holder 10 comprises a top plate 12, a bottom plate 13 and a wire winding part 14 arranged between the top plate and the bottom plate, wherein one positioning groove of the two positioning grooves is arranged on the top plate, namely, the first positioning groove 120 is arranged on the upper surface of the top plate. The other positioning groove is arranged on the bottom plate, i.e. the second positioning groove 130 is arranged on the bottom surface of the bottom plate. The coil, which specifically includes a primary coil and a secondary coil, is wound on the winding portion 14, and the top plate 12 and the bottom plate 13 limit the coil up and down.

The top plate 12 is provided with terminals 15 connected to coil terminals, and the primary coil and the secondary coil have four terminals connected to the four terminals 15. The terminals 15 are bent toward the winding portion 14 of the bobbin as shown in fig. 4 to reduce the height of the transformer or to avoid increasing the height of the transformer.

As an improvement, the edge of the top plate 12 is provided with notches 16, the number of the notches is the same as that of the terminals 15, and the number of the notches is four, specifically, the left side of the top plate 12 is provided with two terminals and two notches, and the right side of the top plate is provided with two terminals and two notches. The function of the gap is as follows: firstly, leading-out ends of the coils are connected with corresponding terminals after passing through gaps, and the gaps have a limiting effect on the leading-out ends; second, the gap can absorb deformation of the top plate 12 caused by the first positioning groove 120 engaging with the first E-shaped member 20.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. Splicing structure of transformer, including line frame (10), with two E shape pieces of line frame complex, the line frame is equipped with terminal (15) and wire winding part (14), its characterized in that: the terminal on the bobbin is bent toward the winding portion of the bobbin.

2. The splice structure of claim 1, wherein: the top and the bottom of the wire frame are respectively provided with a positioning groove, the two E-shaped pieces are matched with the two positioning grooves in a one-to-one mode, the middle structures of the two E-shaped pieces are abutted, the outer structures of the two E-shaped pieces are abutted, each side wall of a pair of side walls of each positioning groove is V-shaped, and each side wall of a pair of side walls of each E-shaped piece is V-shaped; the pair of side walls of the wire frame are arc-shaped, the inner side wall of each outer structure of each E-shaped piece matched with the arc-shaped side walls of the wire frame is arc-shaped, and the curvature of the arc-shaped wire frame side walls is larger than that of the inner side wall of each outer structure of each E-shaped piece.

3. The splice structure of claim 2, wherein: a through hole (11) is formed in the center of the wire frame (10), and the middle structures of the two E-shaped pieces are matched in the through hole; the cross section of the through hole is elliptical, and the cross section of the middle structure is elliptical.

4. The splice structure of claim 2, wherein: the wire frame (10) comprises a top plate (12) and a bottom plate (13), the wire winding part (14) is positioned between the top plate and the bottom plate, one positioning groove of the two positioning grooves is formed in the top plate, and the other positioning groove of the two positioning grooves is formed in the bottom plate; a terminal (15) connected to the coil lead-out terminal is provided on the top plate.

5. The splice structure of claim 4, wherein: gaps (16) are formed in the edge of the top plate (12), and the number of the gaps is the same as that of the terminals (15).