CN212648006U

CN212648006U - Base of miniature transformer

Info

Publication number: CN212648006U
Application number: CN202021681812.4U
Authority: CN
Inventors: 蔡景生
Original assignee: Dongguan Shoubang Electronics Co ltd
Current assignee: Dongguan Shoubang Electronics Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-02
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a miniature transformer's base, including bottom plate and the line frame location structure of setting on the bottom plate, the breach is seted up to the bottom plate, and line frame location structure part sinks in the breach. The bobbin wound with the primary coil and the secondary coil is matched in the bobbin positioning structure, and the bobbin matched in the bobbin positioning structure is partially sunk in the notch of the bottom plate, so that the bobbin is sunk along with the bobbin positioning structure, the height of the whole transformer is reduced, the miniaturization of the transformer is facilitated, and the miniaturization of an electronic product assembled with the transformer is facilitated.

Description

Base of miniature transformer

Technical Field

The utility model relates to a transformer, concretely relates to miniature transformer that electronic product used.

Background

The small transformer is used in electronic products, has the same working principle as a conventional transformer, and has the main components of a primary coil, a secondary coil, a coil holder, an iron core and a base. A bobbin wound with a primary coil and a secondary coil and an iron core are mounted on the base.

SUMMERY OF THE UTILITY MODEL

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

In order to solve the technical problem, the utility model provides a following technical scheme: a base of a miniature transformer comprises a bottom plate and a wire frame positioning structure arranged on the bottom plate, wherein the bottom plate is provided with a notch, and the wire frame positioning structure is partially immersed into the notch.

The bobbin wound with the primary coil and the secondary coil is fitted in the bobbin positioning structure, and since the bobbin positioning structure is partially sunk in the notch of the bottom plate, the bobbin fitted in the bobbin positioning structure is also sunk, and thus the height of the entire transformer is reduced. This is advantageous for downsizing of the transformer, and the reduction in height of the transformer is also a requirement for downsizing of the electronic product (in which the small transformer is mounted), and is also advantageous for downsizing of the electronic product.

Drawings

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

FIG. 1 is a top view of a base of a miniature transformer;

FIG. 2 is a perspective view of a base of a miniature transformer;

FIG. 3 is a front view of a base of a miniature transformer;

FIG. 4 is a right side view of a base of a miniature transformer;

FIG. 5 is a bottom view of a base of a miniature transformer;

fig. 6 is a schematic view of the base of the small-sized transformer in fig. 2, viewed from below.

The symbols in the drawings illustrate that:

10. a base plate; 11. a notch; 12. a convex portion; 120. a beveled edge;

20. a wire frame positioning structure; 21. a vertical plate; 22. a wire frame limiting structure; 220. an arc-shaped surface; 23. a gap; 24. a parting strip;

30. and inserting a PIN.

Detailed Description

Referring to fig. 2, a base of a miniature transformer includes a bottom plate 10 and a bobbin positioning structure 20 disposed on the bottom plate, the bottom plate is provided with a notch 11, and a bobbin positioning structure (specifically, the bottom of the bobbin positioning structure) sinks into the notch.

In the prior art, the notch 11 is not formed in the bottom plate of the miniature transformer, and the wire frame positioning structure is arranged on the upper surface of the bottom plate, so that the miniature transformer is higher in height. The bottom plate 10 of this application is seted up breach 11, and the bottom of line frame location structure 20 sinks in the breach. Thus, the height of the small transformer is reduced.

The wire frame positioning structure 20 includes a pair of vertical plates 21 arranged in parallel and a wire frame limiting structure 22 arranged on the inner side walls of the pair of vertical plates, and the pair of vertical plates are arranged on the pair of inner side walls of the gap 11. The wire rack limiting structure is provided with an arc-shaped surface 220, the wire rack is clamped between the pair of vertical plates 21 from top to bottom, and along with descending of the wire rack, the wire rack is in contact with the arc-shaped surface 220, descends along the arc-shaped surface and abuts against the bottom of the arc-shaped surface to be positioned. The structural design of the wire frame positioning structure facilitates the installation of the wire frame into the wire frame positioning structure, and the wire frame positioning structure can accurately and effectively position the wire frame.

With reference to fig. 2 and 6, the number of the bobbin limiting structures 22 is three, any pair of bobbin limiting structures is oppositely arranged on a pair of vertical plates 21, and a gap 23 for accommodating a coil on the bobbin is formed between two adjacent pairs of bobbin limiting structures. Specifically, the three pairs of line frame limiting structures are a first pair of line frame limiting structure, a second pair of line frame limiting structure and a third pair of line frame limiting structure, and two line frame limiting structures of the first pair of line frame limiting structure are respectively arranged on the pair of vertical plates and are oppositely arranged; similarly, two wire frame limiting structures of the second pair of wire frame limiting structures are respectively arranged on the pair of vertical plates and are oppositely arranged, and two wire frame limiting structures of the third pair of wire frame limiting structures are respectively arranged on the pair of vertical plates and are oppositely arranged. A gap is formed between the first wire rack aligning limiting structure and the second wire rack aligning limiting structure, and a gap is formed between the second wire rack aligning limiting structure and the third wire rack aligning limiting structure. The three pairs of wire frame limiting structures are contacted with the wire frame body, the primary coil wound on the wire frame is positioned between the first pair of wire frame limiting structures and the second pair of wire frame limiting structures, and the secondary coil is positioned between the second pair of wire frame limiting structures and the third pair of wire frame limiting structures.

A division bar 24 capable of abutting against the coil is arranged in any one of the gaps 23, and the width of the division bar is smaller than that of the gap. The parting bead offsets with the coil, carries out spacingly to the coil, so, the clearance between parting bead and the line frame limit structure can dispel the heat to the coil.

After the coil holder is matched with the base, the two E-shaped iron core pieces are matched with the coil holder and the base, specifically, the two E-shaped iron core pieces move to the coil holder direction from the left side and the right side of the coil holder positioning structure 20 respectively, two side structures of each E-shaped iron core piece are matched on the outer sides of the pair of vertical plates 21, and the side structures of the two E-shaped iron core pieces are abutted against the outer sides of the pair of vertical plates; the middle structure of each E-shaped iron core piece is matched in the central hole of the wire frame, and the middle structures of the two E-shaped iron core pieces are abutted in the central hole of the wire frame. Two mutually abutted E-shaped iron core pieces are spliced into a B-shaped iron core.

As shown in fig. 6, PIN insert 30 is located at the bottom four corners of base 10, the base having a ledge 12 with a beveled edge 120 with one end located at gap 23 and the other end proximate the PIN insert. The outgoing line of the coil passes through the gap between the division bar 24 and the limiting structure of the coil holder, passes through the inclined edge 120 and then is wound on the corresponding PIN. Four PINs are inserted, with corresponding four beveled edges 120. In actual operation, the transformer is matched with a corresponding electronic device on the circuit board, the four PINs are inserted into hole positions of the electronic device, the convex part 12 can be pressed on the electronic device, the insertion depth of the PINs is limited, and outgoing lines of the coil are protected.

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. The utility model provides a base of miniature transformer, includes bottom plate (10) and sets up line frame location structure (20) on the bottom plate, its characterized in that: the bottom plate is provided with a notch (11), and the wire frame positioning structure part is sunk into the notch.

2. The base of a miniature transformer of claim 1, wherein: the line frame positioning structure (20) comprises a pair of vertical plates (21) arranged in parallel and a line frame limiting structure (22) arranged on the inner side walls of the pair of vertical plates, and the pair of vertical plates are arranged on the pair of inner side walls of the gap (11).

3. The base of a miniature transformer of claim 2, wherein: the number of the wire frame limiting structures (22) is three, any pair of wire frame limiting structures are oppositely arranged on a pair of vertical plates (21), and a gap (23) for accommodating a coil on the wire frame is arranged between every two adjacent pairs of wire frame limiting structures.

4. A base for a miniature transformer as set forth in claim 3, wherein: a division bar (24) capable of abutting against the coil is arranged in any gap (23), and the width of the division bar is smaller than that of the gap.

5. A base for a miniature transformer as set forth in claim 3, wherein: insert PIN (30) and set up in the four corners department of bottom plate (10) bottom, the bottom of bottom plate is equipped with convex part (12), and the convex part is equipped with inclined edge (120), and inclined edge's one end is located clearance (23), and inclined edge's the other end is close to and inserts PIN.