CN2450759Y - Transformer core forming structure - Google Patents

Abstract

The utility model relates to a transformer core forming structure, particularly a ring-shaped core. The core is formed by that a plurality of silicon steel sheets are mutually overlapped. The inner periphery and the outer periphery of each silicon steel sheet are respectively provided with a plurality of fine convex sheets which are axially raised. An adjacent silicon steel sheet is clamped in positioning by an interval fashion of each fine convex sheet at the inner periphery and the outer periphery of the silicon steel sheet, which makes no gap generated between the silicon steel sheet and the adjacent silicon steel sheet and the silicon steel sheet and the adjacent silicon steel sheet be in a tightly joint state to generate a better positioning structure. The utility model is convenient for a subsequent direct punching forming process to still have better positioning. The utility model doesn't need to be provided with an auxiliary implement. The utility model is better convenient to be made by direct punching.

Description

The transformer core shaped structure

The utility model relates to a kind of transformer core shaped structure.

As shown in Figure 1, core structure for a kind of known ring-shaped transformer, it is to become iron core 1 lamellar body 11 of several pieces predetermined size dimensions and shape with mould punching through facility with silicon steel sheet, the shape of its punching out one-tenth can be divided into circle or ellipse, this surperficial precalculated position, iron core lamellar body top dashes to establish and is formed with several recessed circles 12, and make lower surface be salient point 13, satisfy again and will make the salient point 13 of a slice iron core lamellar body 11 be positioned at the recessed circle 12 of time a slice lamination body 11 in stacked mode layer by layer with several pieces iron core lamellar bodies 2, and stack is to required specification (thickness), impose facility weight and force the recessed circle 12 on several pieces iron core lamellar bodies 11 to rivet together mutually, and constitute the structure of a transformer annular core 1 with salient point 13; Owing to will recessed circle 12 be formed with impact style, may some difference gap, promptly be when not fitting like a glove between recessed circle and salient point point, promptly can produce the gap, as shown in Figure 2 11 of two lamellar bodies, so just can strengthen the thickness of whole iron core 1, and be unfavorable for follow-up crimping combinator, and equal stationary positioned not therebetween, may be in the process that moves, wherein there are several pieces that dystopy takes place, more can have influence on the planarization of periphery.

The purpose of this utility model is to provide a kind of transformer core shaped structure that is difficult for forming the gap between iron core that allows.

For reaching above-mentioned purpose, the utility model adopts following design: a kind of transformer core shaped structure, be annular core, it is characterized in that: it comprises: the silicon steel sheet of plural number, it is formed for folding mutually, periphery respectively is provided with a plurality of axially outstanding thin lugs that are with the neighboring within each silicon steel sheet, uses each thin lug to locate every mode between silicon steel sheet inner rim and outer circumference and blocks another adjacent silicon steel sheet, makes the generation in no gap between two silicon steel sheets.

Each thin lug is the thickness of an outstanding silicon steel sheet.

The thin lug of each silicon steel sheet is for being located at same position.

The utility model is owing to adopt above design, the following advantage of its tool: the utility model is owing to periphery within each silicon steel sheet and neighboring respectively are provided with a plurality of thin lugs for axially giving prominence to, use each thin lug between silicon steel sheet inner rim and outer circumference, to locate and block another adjacent silicon steel sheet every mode, thereby make the generation in no gap between two silicon steel sheets, state for close proximity, produce better location structure, simultaneously also be convenient to follow-up direct stamping process and have more preferable location, more need not to be provided with auxiliary tool.

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

Fig. 1 is known three-dimensional exploded view

Fig. 2 is known cutaway view

Fig. 3 is a three-dimensional exploded view of the present utility model

Fig. 4 is a cutaway view of the present utility model

Fig. 5 is the stereogram that is embodied as transformer of the present utility model

As Fig. 3, shown in Figure 4, be the utility model transformer core shaped structure, iron core 2 for a kind of annular, this iron core 2 is by 21 folded mutually compositions of silicon steel sheet of plural number, periphery 22 respectively is provided with a plurality of axially outstanding thin lugs 23 that are with neighboring 24 within each silicon steel sheet 21,25, use each thin lug 23,25 locate every mode between silicon steel sheet 21 inner rims 22 and 24 places, neighboring and block another adjacent silicon steel sheet 20, make the generation in no gap between two silicon steel sheets, state for close proximity, to produce better location structure, be convenient to follow-up direct stamping process and have more preferable location, more need not to be provided with auxiliary fixture, also more convenient direct punching press is made.

Structure in sum, the thin lug that each silicon steel sheet is located in the utility model utilization conduct in conjunction with the time the location, make iron core in moving, still have each silicon steel sheet of function of location can not produce skew, with known compare more stable, and state for connecting airtight between sheet and the sheet, also with known be different, so iron core does not more have the gap therebetween through after the drawing, more guarantee that with thin lug each silicon steel sheet can not be offset in the punching press, each thin lug can be the form of the thickness of the thickness of outstanding single silicon steel sheet only or two silicon steel sheet; The thin lug of each of each silicon steel sheet is for being located at same position, makes being convenient to, and is convenient to engage fixing.

Another enforcement of the utility model, the thin lug of each of each silicon steel sheet of the present utility model also can to form the form of misconnection, make the polarization of its clad type better for not being located at same position.For another shown in Figure 5, iron core 2 with after enclosing cover 31 sockets, winds with coil 33 thereafter, promptly becomes transformer.So the utility model can use ad hoc thin lug fine polarization to be provided and to go intermittence, be one fully with known different mechanism.

Claims (3)

1, a kind of transformer core shaped structure, be annular core, it is characterized in that: it comprises: the silicon steel sheet of plural number, it is formed for folding mutually, periphery respectively is provided with a plurality of axially outstanding thin lugs that are with the neighboring within each silicon steel sheet, use each thin lug between silicon steel sheet inner rim and outer circumference, to locate and block another adjacent silicon steel sheet, make the generation in no gap between two silicon steel sheets every mode.

2, transformer core shaped structure as claimed in claim 1 is characterized in that: each thin lug is the thickness of an outstanding silicon steel sheet.

3, transformer core shaped structure as claimed in claim 1 is characterized in that: the thin lug of each silicon steel sheet is for being located at same position.

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