CN220873393U - Transformer with compact structure - Google Patents

Abstract

The utility model provides a compact-structure transformer, which comprises a winding framework for winding a coil, magnetic core assemblies assembled at two ends of the winding framework, and an insulating shell, wherein the winding framework is arranged on the winding framework; the same side at both ends of the winding framework is provided with a winding plate for coil routing, the insulating shell is wrapped at one end of the magnetic core assembly, and the bottom plate of the insulating shell is provided with a hollowed-out groove for the winding plate to stretch into, so that the winding plate of the winding framework is prevented from propping against the inner wall of the insulating shell, and the height of the transformer is reduced.

Description

Transformer with compact structure

Technical Field

The utility model relates to the technical field of transformers, in particular to a transformer with a compact structure.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and is widely applied to various circuit boards. The transformer mainly comprises a framework, a magnetic core assembly and a coil winding formed by winding a coil around the framework. Part of transformers are arranged on the market outside a framework and a magnetic core assembly, and an insulating shell is arranged on the outer side of the framework and the magnetic core assembly so that the transformers are stably installed on a main circuit board and meanwhile the safety regulation is guaranteed. However, most of the existing insulating shells are semi-closed box structures, and the winding plate on one side of the winding framework is propped against the inner wall of the insulating shell, so that the height of the transformer is higher.

Disclosure of utility model

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a compact structure's transformer, includes the wire winding skeleton that is used for winding the coil, assembles in the magnetic core subassembly at wire winding skeleton both ends to and insulating housing, the outer magnetic core subassembly of belonged insulating housing parcel in wire winding skeleton one end, the same side at wire winding skeleton both ends is equipped with the wire winding board that is used for the wire to draw forth the crossing of coil, insulating housing is the half fluting box of U shape, and insulating housing's bottom is equipped with a plurality of fretwork groove that is used for holding wire winding hook portion and coil.

Further, the bottom of the insulating shell is provided with a plurality of needle seats, and the needle seats are internally provided with pins.

Further, the hollow grooves are arranged at intervals, and spacer blocks are arranged between every two adjacent hollow grooves.

Further, a positioning notch is formed in the winding plate and can be clamped with a spacer block of the insulating shell, and the positioning notch is used for fixing the winding framework in the insulating shell.

Further, the winding framework is in a cylinder shape, a plurality of baffles are arranged on the winding framework from top to bottom, a winding groove for winding a coil is formed between two adjacent baffles, and a mounting groove for placing a copper sheet is formed in each baffle.

Further, a winding hook portion for winding the wire of the coil is provided on the winding plate.

Further, the copper sheet is in an annular structure with an opening, a plurality of pins are arranged at the opening of the copper sheet, each pin comprises a bearing pin and a bending pin, each bending pin is in an L-shaped upward or downward bending mode, and the copper sheets in two adjacent mounting grooves are respectively in butt joint with the bending pins through the bearing pins.

Further, the copper sheet further comprises a plurality of conductive sheets with built-in conductive circuits, and the conductive sheets are provided with jacks corresponding to pins of the copper sheet.

Further, the conductive sheet is provided with a plurality of electrical connection pins for being inserted into the main circuit board.

Compared with the prior art, the utility model has the beneficial effects that:

1. The bottom plate of the insulating shell is provided with the hollowed-out groove, so that a winding plate of a winding framework can be stretched in, the winding hook part and a wire are prevented from directly propping against the inner wall of the bottom plate of the insulating shell, and the overall height of the transformer is reduced.

2. The locating notch matched with the spacer block of the insulating shell is arranged on the winding plate, and the locating notch is fixedly clamped with the spacer block during assembly, so that the position of the winding framework in the insulating shell can be fixed, the winding framework is stably installed, and the winding framework is prevented from shaking left and right in the insulating shell.

3. The insulating shell is wrapped on one side of the magnetic core component and one side of the winding framework, the front plate of the insulating shell is provided with the needle seat and the stitch, a flying wire led out of the winding groove can run on the winding plate, is wound on the winding hook part and then is spot-welded on the stitch, and then is inserted into the main circuit board through the stitch, so that the flying wire is prevented from flying randomly during the process of mounting the board.

4. The utility model is provided with a conductive sheet, a plurality of jacks for inserting pins of a copper sheet are arranged on the conductive sheet, and electric connection pins for inserting the conductive sheet into a main circuit board are arranged in the conductive sheet in advance, and the copper sheet and the main circuit board are electrically connected by inserting the pins of the copper sheet into the jacks of the conductive sheet and inserting the conductive sheet into the main circuit board. In addition, the conducting strip is used with insulating shell cooperation, can change the direction of inserting the main circuit board of transformer to make the transformer put more steadily.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is an exploded view of the structure of the present utility model.

Fig. 3 is another view of fig. 2.

Fig. 4 is an exploded view of the structure of the present utility model.

Fig. 5 is a schematic structural view of a bobbin according to the present utility model.

Fig. 6 is a schematic structural diagram of a bobbin and a copper sheet according to the present utility model.

Fig. 7 is a schematic view of a bobbin with a copper sheet according to the present utility model.

Wherein, the reference numerals in the figures are as follows: the magnetic core assembly 10, the winding frame 20, the baffle 21, the outer baffle 211, the middle baffle 212, the winding slot 22, the winding plate 23, the winding hook 24, the positioning notch 25, the ladder slot 26, the mounting slot 27, the insulating housing 30, the front plate 31, the pin holder 311, the pins 312, the side plates 32, the bottom plate 33, the hollow slot 331, the spacer 332, the rear plate 34, the copper sheet 40, the pins 41, the receiving pins 411, the bending pins 412, the conductive sheet 50, the insertion holes 51 and the electrical connection pins 52.

Detailed Description

In order to more clearly illustrate the technical solution in the embodiments of the present application, the following description will simply refer to the embodiments or the practical drawings required in the prior art. For ease of description, the dimensions of the various elements illustrated in the figures are not drawn to scale.

Specific embodiments of the present utility model will be described below with reference to the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, a compact transformer includes a magnetic core assembly 10, a bobbin 20 and an insulating housing 30, the magnetic core assembly 10 being assembled at both ends of the bobbin 20; the insulating housing 30 is a U-shaped semi-grooved body, and is composed of a front plate 31, a bottom plate 33, a rear plate 34 and two side plates 32, wherein the bottom plate 33 is provided with two hollow grooves 331 which are arranged at intervals, and partition blocks 332 are arranged between the hollow grooves 331. The insulating housing 30 is wrapped around the core assembly 10 at one end of the bobbin 20.

Referring to fig. 2, 3, 4 and 5, the winding frame 20 is cylindrical, a plurality of baffles 21 are arranged from top to bottom, a winding groove 22 for winding a coil is formed between two adjacent baffles 21, and a mounting groove 26 for mounting a copper sheet 40 is arranged on each baffle 21; the same side at both ends of the winding framework 20 is provided with a winding plate 23 for leading out the wire of the coil, the winding plate 23 is provided with a positioning notch 25, and the outer side of the winding plate 23 is provided with a winding hook part 24 for winding the wire of the coil. During assembly, the front end of the winding plate 23 can extend into the hollow groove 331 of the insulating housing 30, and the positioning notch 25 can be matched and fixed with the spacer 332.

Referring to fig. 4, 5 and 6, the baffle 21 of the bobbin 20 includes an outer end baffle 211 disposed at both ends of the bobbin 20, and at least one middle baffle 212, wherein the outer end baffle 211 is hollowed out toward one side of the magnetic core assembly 10 to form a stepped slot 27 for placing the copper sheets 40, two copper sheets 40 can be inserted into the mounting slot 26 of the middle baffle 212, and the two copper sheets 40 are separated by an insulating film (not shown). The copper sheet 40 is a ring structure with an opening, the opening of the copper sheet 40 is provided with a pin 41, which comprises a receiving pin 411 and a bending pin 412, and the bending pin 412 is in an L shape which is bent upwards or downwards. After the copper sheets 40 are inserted into the winding frame 20, the copper sheets 40 in the adjacent two mounting grooves 26 are respectively butted with the bending pins 412 through the bearing pins 411.

Referring to fig. 2, 3 and 4, the present utility model is further provided with a plurality of conductive sheets 50 preset with conductive circuits, and the conductive sheets 50 are provided with insertion holes 51 matched with pins of the copper sheet 40 and electrical connection pins 52 for inserting into the main circuit board. After the copper sheet 40 is placed in the mounting groove 25 of the winding framework 20, pins of the copper sheet 40 are inserted into corresponding insertion holes 51 on the conductive sheet 50, and then the conductive sheet 50 is inserted into the main circuit board through the electric connection pins 52, so that the copper sheet 40 is electrically connected with the main circuit board.

Referring to fig. 1, 2 and 3, the outer sidewall of the front plate 31 of the insulating housing 30 is provided with a plurality of needle holders 311, and the needle holders 311 are provided with pins 312 therein. The coil is wound on the winding groove 22 to form a winding, the flying wire of the coil is led out from the winding plate 23, after being wound on the winding hook part 24, the flying wire can be led out from the upper part of the needle seat 311, the winding is spot-welded on the stitch 312, and then the stitch 312 is directly inserted into the main circuit board, so that the connection between the coil winding and the main circuit board is realized, the flying wire is prevented from flying in disorder when the transformer is assembled, and the circuit of the circuit board is more concise and tidy.

Referring to fig. 1 to 7, in the installation of the present utility model, a coil is first wound on the winding groove 22 of the bobbin 20 to form a winding, a wire of the coil is wound on the winding hook 24 and then led out from the winding plate 23, and then the copper sheets 40 are sequentially inserted into the installation groove 27 and the ladder groove 26, and the adjacent copper sheets 40 are butted with the receiving pins 411 through the bending pins 412. Then, the magnetic core assembly 10 is assembled at two ends of the winding framework 20, the insulating housing 30 is buckled outside the magnetic core assembly 10 at one end of the winding framework 20, the winding plate 23 stretches into the hollow groove 331 of the insulating housing 30, and the positioning notch 25 is clamped and fixed with the spacer 332. The wire of the coil winding is led out from the upper part of the needle seat 311 and fixed with the stitch 312 by spot welding. Pins 41 of copper sheet 40 are inserted into corresponding receptacles 51 on the conductive plate. The pins 312 of the insulating housing 30 and the electrical connection pins 52 of the conductive sheet 50 are inserted into the main circuit board to electrically connect the coil winding and the main circuit board and the copper sheet 40 and the main circuit board, respectively, while allowing the transformer to be stably placed on the main circuit board.

The foregoing is merely illustrative of specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the design concept shall fall within the scope of the present utility model.

Claims (8)

1. The utility model provides a compact structure's transformer, includes the bobbin that is used for winding the coil to and assemble in the magnetic core subassembly at bobbin both ends, the same side at bobbin both ends is equipped with the wiring board that is used for the wire of coil to draw forth, its characterized in that respectively: still include an insulating housing, insulating housing is U shape half fluting box, insulating housing wraps up outside the magnetic core subassembly of wire winding skeleton one end, insulating housing's bottom is equipped with and is used for the routing groove that the wire winding board stretched into.

2. A compact transformer as recited by claim 1, further comprising: the outer side wall of the insulating shell is provided with a plurality of needle seats, and the needle seats are internally provided with pins.

3. A compact transformer as recited by claim 1, further comprising: the hollow grooves are arranged at intervals, and spacer blocks are arranged between every two adjacent hollow grooves.

4. A compact transformer according to claim 3, wherein: and the winding plate is provided with a positioning notch matched with the spacer block.

5. A compact transformer as recited by claim 1, further comprising: the winding framework is in a cylindrical shape, a plurality of baffles are arranged on the winding framework from top to bottom, a winding groove for winding a coil is formed between two adjacent baffles, and a mounting groove for placing a copper sheet is formed in each baffle.

6. A compact transformer as recited by claim 5, further comprising: the baffle is provided with a winding hook part for winding the wire of the coil.

7. A compact transformer as recited by claim 5, further comprising: the copper sheet is in an annular structure with an opening, pins are arranged at the opening of the copper sheet, each pin comprises a bearing pin and a bending pin, each bending pin is bent upwards or downwards in an L shape, and the copper sheets in two adjacent mounting grooves are respectively butted with the bending pins through the bearing pins.

8. A compact transformer as recited by claim 7, further comprising: the copper sheet is characterized by further comprising a plurality of conductive sheets with built-in conductive circuits, wherein jacks corresponding to pins of the copper sheet are arranged on the conductive sheets.