CN212516762U

CN212516762U - High-insulation transformer

Info

Publication number: CN212516762U
Application number: CN202020592438.4U
Authority: CN
Inventors: 王宁; 聂柳荣; 王洪友; 邹时花
Original assignee: Dongguan Pulse Electronics Co Ltd
Current assignee: Dongguan Pulse Electronics Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-02-09
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a high-insulation transformer, which comprises an insulation shell, a framework, a magnetic core and a coil; the insulating shell is provided with an accommodating cavity with an upward opening, the bottom of the insulating shell is provided with a terminal pin which is used for being in conductive connection and fixed with the circuit board, the framework is embedded in the accommodating cavity from top to bottom, the outer surface of the framework is provided with a winding groove, and two ends of the framework are penetrated to form magnetic core holes; the magnetic core passes through the magnetic core hole and is fixed on the framework, and the magnetic core is positioned in the accommodating cavity; through from top to bottom placing and insulating casing at skeleton, magnetic core and coil to a line of coil tip stretches out the holding chamber and with insulating casing in terminal pin conducting connection, the transformer main part can realize vary voltage work in insulating casing's holding chamber, makes the transformer main part can reduce the size and less space that occupies also can reach higher dielectric strength, can also increase its power density simultaneously.

Description

High-insulation transformer

Technical Field

The utility model belongs to the technical field of the transformer technique and specifically relates to indicate a high insulation transformer.

Background

The Transformer (Transformer) is a device for changing alternating voltage by using the principle of electromagnetic induction, and is widely applied to xDSL, g.fast products and related products, specifically including ADSL, ADSL2, ADSL2+, HDSL, SHDSL, VDSL2, g.fast and related products, and can adjust the quality and state of a communication circuit and reduce the signal distortion of the products.

The main structure of the existing transformer main body comprises an iron core, a framework and a coil; in order to improve the insulation strength, the length, the width and the height of a framework in the transformer main body are increased so as to meet the requirement of the safety distance between the transformer and a nearby electrical element; in some special applications requiring isolation between the product and surrounding components, several layers of adhesive paper are required to cover the product to meet the isolation requirement. The transformer body is too large in size and occupies too much space.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the deficiency of the prior art, and the main objective of the present invention is to provide a high-insulation transformer, which can effectively solve the problem that the existing transformer main body has too large size and occupies too much space.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-insulation transformer comprises an insulation shell, a framework, a magnetic core and a coil; the insulating shell is provided with an accommodating cavity with an upward opening, the bottom of the insulating shell is provided with a terminal pin which is used for being in conductive connection and fixed with the circuit board, the framework is embedded in the accommodating cavity from top to bottom, the outer surface of the framework is provided with a winding groove, and two ends of the framework are penetrated to form magnetic core holes; the magnetic core passes through the magnetic core hole and is fixed on the framework, and the magnetic core is positioned in the accommodating cavity; the coil is wound in the winding slot, the coil is positioned in the accommodating cavity, and a lead at the end part of the coil extends out of the accommodating cavity and is connected with the terminal pin in a conduction mode.

As a preferred embodiment: the top of insulating casing is provided with a plurality of first lead wire grooves, and the top lateral margin of this skeleton is provided with a plurality of second lead wire grooves, and these a plurality of second lead wire grooves communicate with corresponding first lead wire groove respectively.

As a preferred embodiment: a plurality of terminal pins are arranged on two sides of the bottom of the insulating shell, and each terminal pin extends vertically and downwards.

As a preferred embodiment: the magnetic core is including first magnetic core body and second magnetic core body, and the setting of this first magnetic core body and second magnetic core body mirror image has first convex part in this first magnetic core body at skeleton both sides, has the second convex part on this second magnetic core body, and this first convex part and second convex part are all worn to establish in the magnetic core hole.

As a preferred embodiment: both ends of the framework are provided with mounting grooves, and the two mounting grooves are located at both ends of the magnetic core hole.

As a preferred embodiment: the number of the terminal pins is 8, and the terminal pins are distributed on the lower surface of the insulating shell in a mirror image mode.

As a preferred embodiment: the insulating shell is made of plastic.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

through from top to bottom placing and insulating casing at skeleton, magnetic core and coil to a line of coil tip stretches out the holding chamber and with insulating casing in terminal pin conducting connection, the transformer main part can realize vary voltage work in insulating casing's holding chamber, makes the transformer main part can reduce the size and less space that occupies also can reach higher dielectric strength, can also increase its power density simultaneously.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an assembled perspective view of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the preferred embodiment of the present invention;

fig. 3 is an assembled perspective view of another angle of the preferred embodiment of the present invention.

The attached drawings indicate the following:

10. insulating housing 101, accommodation chamber

102. First lead groove 11, terminal pin

20. Framework 201 and mounting groove

202. Winding slot 203, magnetic core hole

204. Second lead groove 30, magnetic core

31. First and second

magnetic core bodies

32 and 32

40. Coil 50, lead space.

Detailed Description

Referring to fig. 1 to 3, a specific structure of a preferred embodiment of the present invention is shown, which includes an insulating housing 10, a frame 20, a magnetic core 30 and a coil 40.

The insulation shell 10 is provided with an accommodating cavity 101 with an upward opening, the transformer does not need to increase the insulation strength by increasing the size of the transformer by placing the transformer main body into the accommodating cavity 101 of the insulation shell 10, the bottom of the insulation shell 10 is provided with a terminal pin 11 which is used for being in conductive connection and fixed with a circuit board, the framework 20 is embedded into the accommodating cavity 101 from top to bottom, the outer surface of the framework 20 is provided with a winding groove 202, and two ends of the framework 20 are penetrated to form a magnetic core hole 203; the magnetic core 30 passes through the magnetic core hole 203 and is fixed on the framework 20, and the magnetic core 30 is positioned in the accommodating cavity 101; the coil 40 is wound in the winding slot 202, the coil 40 is located in the accommodating cavity 101, and the end lead of the coil 40 extends out of the accommodating cavity 101 and is connected with the terminal pin 11 in a conduction manner, so that the coil 40 can be connected with the circuit board in a conduction manner.

In this embodiment, the magnetic core 30 includes a first magnetic core body 31 and a second magnetic core body 32, the first magnetic core body 31 and the second magnetic core body 32 are both in an E-shaped structure, the first magnetic core body 31 and the second magnetic core body 32 are arranged on two sides of the framework 20 in a mirror image manner, the first magnetic core body 31 has a first convex portion thereon, the second magnetic core body 32 has a second convex portion thereon, and the first convex portion and the second convex portion are both inserted into the magnetic core hole 203. Both ends of this skeleton 20 all are equipped with mounting groove 201, and two mounting groove 201 are located magnetic core hole 203 both ends, and this mounting groove 201 can realize spacingly to first magnetic core 30 and second magnetic core 30, prevents that first magnetic core 30 and second magnetic core 30 from removing at skeleton 20 is random.

Further, a plurality of first lead grooves 102 are disposed on the top of the insulating housing 10, a plurality of second lead grooves 204 are disposed on the top side edge of the framework 20, and the plurality of second lead grooves 204 are respectively communicated with the corresponding first lead grooves 102 to form a lead space 50 for leading out of the coil 40. A plurality of terminal pins 11 are disposed on both sides of the bottom of the insulating housing 10, each terminal pin 11 extends vertically downward, a wire in the coil 40 is led out from the lead space 50 and then is connected to the terminal pin 11, and finally, the terminal pin 11 is connected to the circuit board, so that the coil 40 is connected to the circuit board.

Further, the number of the terminal pins 11 is 8, and the terminal pins 11 are arranged on the lower surface of the insulating housing 10 in a mirror image manner. The insulating shell 10 is made of plastic, and the insulating strength of the transformer can be better improved by designing the insulating shell 10 into the plastic.

Detailed description the method of use of this example is as follows:

firstly, the coil 40 is wound on the frame 20, then the magnetic core 30 is mounted on the frame 20 to form a transformer main body, then the transformer main body is placed into the accommodating cavity 101 from top to bottom, and then the lead of the coil 40 is wound on the terminal pin 11 to be welded and conducted. When the connector is used, the terminal pins 11 are fixed on the circuit board and are connected with the circuit board in a conduction mode.

The utility model discloses a design focus lies in:

through from top to bottom placing and insulating casing at skeleton, magnetic core and coil to a line of coil tip stretches out the holding chamber and with insulating casing in terminal pin conducting connection, the transformer can realize vary voltage work in insulating casing's holding chamber, makes the transformer can reduce the size and less space that occupies also can reach higher dielectric strength, can also increase its power density simultaneously.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A high-insulation transformer is characterized in that: comprises an insulating shell, a framework, a magnetic core and a coil; the insulating shell is provided with an accommodating cavity with an upward opening, the bottom of the insulating shell is provided with a terminal pin which is used for being in conductive connection and fixed with the circuit board, the framework is embedded in the accommodating cavity from top to bottom, the outer surface of the framework is provided with a winding groove, and two ends of the framework are penetrated to form magnetic core holes; the magnetic core passes through the magnetic core hole and is fixed on the framework, and the magnetic core is positioned in the accommodating cavity; the coil is wound in the winding slot, the coil is positioned in the accommodating cavity, and a lead at the end part of the coil extends out of the accommodating cavity and is connected with the terminal pin in a conduction mode.

2. The high-insulation transformer according to claim 1, wherein: the top of insulating casing is provided with a plurality of first lead wire grooves, and the top lateral margin of this skeleton is provided with a plurality of second lead wire grooves, and these a plurality of second lead wire grooves communicate with corresponding first lead wire groove respectively.

3. The high-insulation transformer according to claim 1, wherein: a plurality of terminal pins are arranged on two sides of the bottom of the insulating shell, and each terminal pin extends vertically and downwards.

4. The high-insulation transformer according to claim 1, wherein: the magnetic core is including first magnetic core body and second magnetic core body, and the setting of this first magnetic core body and second magnetic core body mirror image has first convex part in this first magnetic core body at skeleton both sides, has the second convex part on this second magnetic core body, and this first convex part and second convex part are all worn to establish in the magnetic core hole.

5. The high-insulation transformer according to claim 4, wherein: both ends of the framework are provided with mounting grooves, and the two mounting grooves are located at both ends of the magnetic core hole.

6. The high-insulation transformer according to claim 1, wherein: the number of the terminal pins is 8, and the terminal pins are distributed on the lower surface of the insulating shell in a mirror image mode.

7. The high-insulation transformer according to claim 1, wherein: the insulating shell is made of plastic.