CN2783499Y

CN2783499Y - Installation structure for surface welding transtormer

Info

Publication number: CN2783499Y
Application number: CN 200520053341
Authority: CN
Inventors: 苏天寅
Original assignee: Dongguan Chuangci Magnetic Components Co ltd
Current assignee: Dongguan Chuangci Magnetic Components Co ltd
Priority date: 2005-01-14
Filing date: 2005-01-14
Publication date: 2006-05-24
Anticipated expiration: 2015-01-14

Abstract

The utility model relates to the technical field of transformer products, especially an installation structure for a surface welding transformer, which comprises a frame, a bobbin that is arranged on the frame, and a magnetic core that is penetrated in the bobbin, wherein the bottom surface of the frame is provided with a plurality of fastening devices. The utility model is provided with a plurality of fastening devices on the frame of the surface welding transformer. The transformer is firmly fixed in a corresponding clamping groove on a circuit board by the fastening devices, and then the pin of the transformer is welded on the circuit board. Thus, the transformer is firmly fixed on the circuit board, and the transformer and the circuit board are formed into an integral body, which can effectively prevent the transformer from loosening or falling.

Description

A kind of mounting structure of surface soldered transformer

Technical field:

The utility model relates to the power transformer product technical field, refers in particular to a kind of mounting structure of surface soldered transformer.

Background technology:

Traditional transformer is many to be made of three parts: frame, be wound with the bobbin of coil and be arranged in magnetic core in the bobbin, wherein bobbin is fixed by frame.Transformer usually uses in electronic circuit, for example, the backlight liquid crystal display light source is mainly provided by cathode fluorescent tube, main light source for the inner liquid crystal panel back side, and each fluorescent tube needs an alterating and direct current pressure converter to drive, and each alterating and direct current pressure converter also needs a transformer to cooperate, therefore LCD circuit board in just need to install a plurality of transformers.Traditional mounting means is by the paster mode transformer to be fixed on the circuit board at present, and promptly the pin of bobbin is fixed on the circuit board assigned address by the mode of welding on the transformer, thereby transformer and circuit board are fixed.Though the mode operating efficiency of paster is fast, but also there is certain deficiency in it: at present because The application of new technique, a transformer drives a plurality of fluorescent tubes and has not worried the current balance type problem, but because light increases, increases, naturally require transformer efficiency to increase, thereby transformer will become increasing, more and more heavier.And the surface soldered transformer is because the advantage that its mounting means had, it will still become the main flow of this type of transformer, this has just caused when transformer weight acquires a certain degree, and it is not enough only relying on pin that transformer is welded on the circuit board, and its structure occurs loosening easily.For example, occur waving or during other motion conditions, transformer will be prone to loosening under this motion effect, or even great situations such as pin and circuit board disengaging when circuit board.How to overcome this problem, guarantee that the steady operation of transformer has become a urgency major issue to be solved of many manufacturers.

Summary of the invention:

The purpose of this utility model is to overcome existing deficiency in the present product, provides a kind of transformer that makes firmly to be installed on surface soldered transformer mounting structure on the circuit board.

For achieving the above object, the utility model has adopted following technical scheme: it comprises frame, is installed on the bobbin on the frame and is arranged in the interior magnetic core of bobbin, wherein is provided with most bayonet units in the bottom surface of frame.

Described bayonet unit is the grab that is arranged on the frame.Perhaps, described bayonet unit is a card post that is raised in matrix, and the end of card post is formed with a flange.

The utility model is provided with a plurality of bayonet units on the frame of surface soldered transformer,, and then the pin of transformer is welded on the circuit board firm being fixed on the circuit board in the corresponding draw-in groove of transformer by this bayonet unit.So transformer is just by firm being fixed on the circuit board, and forms an integral body with circuit board, can prevent effectively that it from occurring loosening or come off.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the stereogram of the utility model embodiment one;

Fig. 2 is the partial enlarged drawing of the utility model embodiment one

Fig. 3 is the partial perspective view of the utility model embodiment two;

Fig. 4 is the partial perspective view of the utility model embodiment three;

Fig. 5 is the partial perspective view of the utility model embodiment four.

Embodiment:

See Fig. 1,2, the utility model comprises equally with at present product is the same: frame 1, be installed on the bobbin 2 on the frame 1 and be arranged in magnetic core 3 in the bobbin 2.Wherein be provided with most bayonet units in the bottom surface of frame 1.This bayonet unit can be the grab 4 that is arranged on the frame 1.The concrete structure of this grab 4 is: an extension is formed downwards on the bottom at frame 1 side, and forms a bending hook in the end of this extension.On frame 1, be provided with in the present embodiment by four grabs 4 (each side being provided with two).Hole clipping is offered to position that should grab 4 in the position that transformer is installed on circuit board during use.After in the grab on the frame 14 is pressed into this hole clipping, makes stable being fixed on the circuit board of whole transformer by grab 4 in the buckle connection of hole clipping on the circuit board, and then the pin 21 of bobbin 2 is fixed on the circuit board assigned address by the mode of welding.

Certainly, bayonet unit in the utility model also can adopt other structures, see Fig. 3, this is embodiment two of the present utility model: in the present embodiment, bayonet unit is a card post 5 that is raised in frame 1, the end of card post 5 is formed with a flange 51, and offers one in the middle of the card post 5 it is divided into the gap 54 of the

individuality

52,53 of two symmetries.Hole clipping is offered to the position that should block post 5 in the position of during use transformer being installed on circuit board.When card post 5 inserts because the centre of card post 5 is formed with gap 54, then individual 52,53 can compress relatively with by the hole clipping on the circuit board, treat that flange 51 is by the hole clipping on the circuit board after, individual 52,53 recover, and can not broken away from by hole clipping to guarantee card post 5.

See Fig. 4, this is embodiment three of the present utility model, offers one " people " font gaps 55 in the middle of the card post 5, and this gap will block post 5 and evenly be divided into three

individualities

56,57,58 like this.Its effect is identical with the foregoing description one.Certainly, also can offer one " ten " font gap 59 in the middle of card post 2, this gap will block post 2 and evenly be divided into four individualities, as shown in Figure 5.

The utility model is provided with a plurality of bayonet units on the frame 1 of transformer, by this bayonet unit transformer is fixed on the circuit board, and then the pin 21 on the bobbin 2 of transformer is welded on the circuit board.Transformer is just by firm being fixed on the circuit board like this, and forms an integral body with circuit board, can prevent effectively that it from occurring loosening or come off.

Claims

1, a kind of mounting structure of surface soldered transformer comprises: frame (1), be installed on the bobbin (2) on the frame (1) and be arranged in magnetic core (3) in the bobbin (2), it is characterized in that: be provided with most bayonet units in the bottom surface of frame (1).

2, the mounting structure of a kind of surface soldered transformer according to claim 1 is characterized in that: described bayonet unit is for being arranged at the grab (4) on the frame (1).

3, the mounting structure of a kind of surface soldered transformer according to claim 1 is characterized in that: described bayonet unit is a card post (5) that is raised in matrix (1), and the end of card post (5) is formed with a flange (51).

4, the mounting structure of a kind of surface soldered transformer according to claim 3 is characterized in that: offer one in the middle of the described card post (5) it is divided into the individuality (52) of two symmetries, the gap (54) of (53).

5, the mounting structure of a kind of surface soldered transformer according to claim 3, it is characterized in that: offer one " people " font gap (55) in the middle of the described card post (5), this gap (55) will block post (5) and evenly be divided into three individualities (56,57,58).

6, the mounting structure of a kind of surface soldered transformer according to claim 3 is characterized in that: offer one " ten " font gap (59) in the middle of the described card post (5), this gap (59) will block post (5) and evenly be divided into four individualities.