CN216793454U

CN216793454U - Dustproof transformer for mobile phone charger

Info

Publication number: CN216793454U
Application number: CN202220179668.7U
Authority: CN
Inventors: 孙彩霞
Original assignee: Hefei Jiaduoli Electronics Co ltd
Current assignee: Hefei Jiaduoli Electronics Co ltd
Priority date: 2022-01-22
Filing date: 2022-01-22
Publication date: 2022-06-21
Anticipated expiration: 2032-01-22

Abstract

The utility model belongs to the technical field of transformers, and particularly relates to a dustproof transformer for a mobile phone charger, which comprises a bottom plate and a transformer main body, wherein a mounting rack is welded on the bottom plate, the transformer main body is embedded in the mounting rack, and heat dissipation holes are formed in the side wall of the mounting rack; the transformer main body comprises a magnetic core and a winding mechanism arranged on the magnetic core; the winding mechanism on the transformer main body is different from a method for directly winding the coil on the iron core in the prior art, and the magnetic core is sleeved with the multi-layer stacked substrate and the insulating sheets, so that an enameled wire of the winding mechanism has better sealing performance, dust is effectively prevented from entering, the creepage distance is lengthened, the pressure resistance of the winding mechanism in the device is also increased, the integral insulation performance is better, the generation of electrostatic adsorption dust is prevented, and the integral dustproof effect is obviously better compared with the prior art.

Description

Dustproof transformer for mobile phone charger

Technical Field

The utility model belongs to the technical field of transformers, and particularly relates to a dustproof transformer for a mobile phone charger.

Background

The mobile phone charger is used for charging a mobile phone, and in the mobile phone charger, a transformer is an important component of the mobile phone charger, the transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and main components are a primary enameled wire, a secondary enameled wire and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.

Along with the requirement that people's miniaturization demand and quick charge ability to the cell-phone charger constantly improve, the ability to the power of transformer in the cell-phone charger and current output also constantly improves, and this has undoubtedly increased the whole calorific capacity of transformer by a wide margin, and sufficient heat dissipation should be guaranteed to current transformer when realizing the miniaturization, and current transformer dustproof performance is difficult to guarantee at the heat dissipation in-process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dustproof transformer for a mobile phone charger, which aims to solve the problem of poor dustproof performance in the existing mobile phone charger.

The utility model realizes the purpose through the following technical scheme:

a dustproof transformer for a mobile phone charger comprises a bottom plate and a transformer main body, wherein a mounting frame is welded on the bottom plate, the transformer main body is embedded in the mounting frame, and heat dissipation holes are formed in the side wall of the mounting frame;

the transformer main part includes the magnetic core, locates the winding mechanism on the magnetic core, and wherein, the winding mechanism includes that a plurality of cover in turn in proper order are located base plate and insulating piece on the magnetic core, the base plate with all set up the cooperation on the insulating piece the through-hole that the magnetic core passed, the base plate side is equipped with the coil pin, the terminal surface has all laminated the enameled wire about the base plate, the lead wire of enameled wire all peg graft in the coil pin.

As a further optimized solution of the present invention, an insulating layer is disposed outside the magnetic core, an insulating cover plate is disposed on the insulating layer along the axial direction of the magnetic core, and the insulating cover plate is configured as a protruding structure protruding from the winding mechanism along the axial direction of the magnetic core.

As a further optimized scheme of the utility model, the substrate is made of a composite ceramic material, and the insulating sheet is made of a heat-conducting PC material.

As a further optimized scheme of the utility model, the enameled wire is electroplated and attached to the top and the bottom of the substrate.

As a further optimized scheme of the utility model, the upper end of the mounting frame is provided with an output terminal, and the bottom of the bottom plate is provided with an input terminal.

As a further optimization scheme of the utility model, a telescopic spring is arranged between the inner side edge of the mounting frame and the bottom plate.

The utility model has the beneficial effects that:

1) the winding mechanism on the transformer main body is different from a method for directly winding a coil on an iron core in the prior art, the magnetic core is sleeved with the multiple layers of stacked substrates and insulating sheets, and the enameled wires are attached to the upper end surface and the lower end surface of the substrates, so that the enameled wires of the winding mechanism have better sealing performance and effectively prevent dust from entering;

2) according to the transformer, the insulating cover plate is arranged on the magnetic core between the winding mechanism and the mounting frame, so that the compression resistance of the winding mechanism in the vertical direction is improved, the winding mechanism is protected, the creepage distance in the vertical direction is increased, the integral insulating strength of the transformer is improved, and dust is not easy to adsorb;

3) the utility model has simple structure, high stability, reasonable design and convenient popularization and use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the winding mechanism of the present invention;

fig. 3 is a schematic structural diagram of the insulating sheet of the present invention.

In the figure: 1. a base plate; 2. a mounting frame; 3. a magnetic core; 4. a winding mechanism; 5. an insulating cover plate; 6. an output terminal; 7. an input terminal; 8. a tension spring; 41. a substrate; 42. an insulating sheet; 411. enamelled wires; 412. a coil pin; 413. and a through hole.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1-3, a dustproof transformer for a mobile phone charger comprises a bottom plate 1 and a transformer main body, wherein a mounting frame 2 is welded on the bottom plate 1, the transformer main body is embedded in the mounting frame 2, and heat dissipation holes are formed in the side wall of the mounting frame 2; the arrangement of the mounting frame 2 can protect the transformer main body and prevent dust from entering the transformer main body.

The transformer main body includes magnetic core 3, locates winding mechanism 4 on the magnetic core 3, wherein, winding mechanism 4 includes that a plurality of cover in turn locate base plate 41 and insulating piece 42 on the magnetic core 3, all set up the through-hole 413 that the cooperation magnetic core 3 passed on base plate 41 and the insulating piece 42, and the base plate 41 side is equipped with coil pin 412, and the terminal surface has all laminated enameled wire 411 about the base plate 41, and enameled wire 411's lead wire is all pegged graft in coil pin 412.

Winding mechanism in the transformer main part in this application is different from the direct method of coiling on the iron core among the prior art, locate on magnetic core 3 through the base plate 41 and the insulating piece 42 cover that the multilayer piles up, enameled wire 411 is laminated in base plate 41's upper and lower terminal surface, the enameled wire 411 that makes winding mechanism has better leakproofness like this, effectively prevent the entering of dust, simultaneously because all cover on the base plate 41 of each layer has insulating piece 42, thereby creepage distance has been lengthened, winding mechanism 4's compressive capacity in the device has also been increased, it is also better to make holistic insulating nature, prevent to produce the electrostatic absorption dust, it is more outstanding to show holistic dustproof effect to compare in prior art.

Specifically, an insulating layer is arranged on the outer side of the magnetic core 3, an insulating cover plate 5 is arranged on the insulating layer along the axial direction of the magnetic core 3, and the insulating cover plate 5 is configured as a protruding structure protruding out of the winding mechanism 4 along the axial direction of the magnetic core 3.

The setting of insulating cover plate 5 has increased winding mechanism 4 compressive property in vertical direction, plays the guard action to winding mechanism 4, has still increased the creepage distance of vertical direction simultaneously to promote the holistic dielectric strength of transformer, be more difficult for adsorbing the dust.

Specifically, the substrate 41 is made of a composite ceramic material, and the insulating sheet 42 is made of a heat conductive PC material.

In the application, the substrate 41 adopts the composite ceramic material as the base material to replace the traditional glass fiber circuit board, and the problems of poor compression resistance effect and poor heat dissipation of the existing transformer are solved by utilizing the two-in-one characteristic of good insulation and heat dissipation effects of the composite ceramic material; the insulating sheet 42 is made of heat-conducting PC material, which gives consideration to heat dissipation and certain hardness, and increases the structural strength of the transformer main body in the longitudinal direction.

Specifically, the enameled wires 411 are attached to the top and bottom of the substrate 41 by electroplating, and the wear resistance, conductivity, reflectivity, corrosion resistance (copper sulfate, etc.), and appearance can be improved by electroplating.

Specifically, the upper end of the mounting frame 2 is provided with an output terminal 6, and the bottom of the bottom plate 1 is provided with an input terminal 7.

Specifically, be equipped with expanding spring 8 between 2 inboard edges of mounting bracket and the bottom plate 1, expanding spring 8's setting can prevent in the use when the solder joint takes place not hard up on the bottom plate 1, and mounting bracket 2 takes place the displacement, produces the extrusion damage to the transformer main part, plays buffering absorbing effect.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a cell-phone is dustproof transformer for charger, includes bottom plate (1), transformer main part, its characterized in that: the bottom plate (1) is welded with a mounting rack (2), the transformer body is embedded in the mounting rack (2), and heat dissipation holes are formed in the side wall of the mounting rack (2);

the transformer body includes magnetic core (3), locates winding mechanism (4) on magnetic core (3), wherein, winding mechanism (4) include a plurality of cover in turn locate base plate (41) and insulating piece (42) on magnetic core (3), base plate (41) with the cooperation has all been seted up on insulating piece (42) through-hole (413) that magnetic core (3) passed, base plate (41) side is equipped with coil pin (412), terminal surface has all laminated enameled wire (411) about base plate (41), the lead wire of enameled wire (411) all peg graft in coil pin (412).

2. The dustproof transformer for the mobile phone charger according to claim 1, wherein: the insulating layer is arranged on the outer side of the magnetic core (3), the insulating layer is arranged on the axis direction of the magnetic core (3) and is provided with an insulating cover plate (5), and the insulating cover plate (5) is constructed to protrude out of the protruding structure of the winding mechanism (4) along the axis direction of the magnetic core (3).

3. The dustproof transformer for the mobile phone charger according to claim 1, wherein: the substrate (41) is made of a composite ceramic material, and the insulating sheet (42) is made of a heat-conducting PC material.

4. The dustproof transformer for the mobile phone charger according to claim 1, wherein: the top and the bottom of the substrate (41) are both electroplated and attached with the enameled wire (411).

5. The dustproof transformer for the mobile phone charger according to claim 1, wherein: the mounting bracket (2) upper end is equipped with output terminal (6), the bottom of bottom plate (1) is equipped with input terminal (7).

6. The dustproof transformer for the mobile phone charger according to claim 1, wherein: and an extension spring (8) is arranged between the inner side of the mounting frame (2) and the bottom plate (1).