Large-current pin structure of vertical resonant transformer

Abstract

The invention discloses a large-current pin structure of a vertical resonant transformer. A first partition plate is arranged on a coil holder, and a second partition plate and a third partition plate are arranged at the two sides of the coil holder; a wiring part is arranged on the third partition plate, and a first coil is wound around a first wire duct formed between the first partition plate and the second partition plate; and a second coil is wound around a second wire duct formed between the first partition plate and the third partition plate. An insulating layer wraps the first coil and the first partition plate and wraps the root of the first partition plate, so that the creepage distance between the first coil and the second coil is increased. A shell cover is disposed on the second partition plate in a sleeving manner, covers the first coil and extends to the first partition plate; the first coil is connected to a connection terminal of the shell cover. The connection terminal is connected with a circuit mainboard, and the second coil extends to a wiring part and is connected to the circuit mainboard through an adapter card to increase the distance between the wiring part and the connection terminal; the adapter card can adopt double panels to greatly reduce the circuit impedance, thereby meeting the requirements of adopting the double panels and passing the safety regulation for the circuit mainboard, and reducing the manufacturing cost.

Description

technical field [0001] The invention relates to a vertical resonant transformer, in particular to a high-current pin structure of a vertical resonant transformer that simplifies the circuit layout of the main board, naturally increases the distance between the primary side and the secondary side, and increases the insulation and shielding effect. Background technique [0002] Common vertical resonant transformers, such as China Taiwan Invention Patent Bulletin No. I463508 "Improved Structure of Transformer", use a frame to cover at least part of a preset iron core group, and make the iron core group have a Through the magnetic conduction circuit of the wire frame, a wire slot and at least one connecting portion protruding outward are provided on the outer peripheral side of the wire frame, and a plurality of grooves with lateral openings are arranged on the connecting portion, and a coil is wound on In the wire groove of the wire frame, the aforementioned coils have at least...

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Problems solved by technology

[0004] 1. The structure of the insulating shell such as the shell cover is too complicated. Although it has a good insulating effect, in order to meet the demands of miniaturization and light weight of the transformer, the structure of these insulating shells must conform to the structure of the existing transformer, resulting in a rather complicated structure. , Moreover, the fitting of the insulating shell and the wire frame takes up a considerable space, which limits the extremely precious winding area

[0005] 2. The demand for miniaturization of the transformer mainly corresponds to the miniaturization of electronic products. Among them, the area of ​​the circuit board is increasingly miniaturized. In the above-mentioned patents, the pins of the transformer are arranged in two rows side by side, and are arranged on the side of the transformer. On both sides, it can be clearly seen that the width of these two rows of pins is larger than the width of the transformer. The reason is that there are many pin holes on the circuit board, and copper foil is set around the pin holes. For the corresponding line, in terms of the requirements of safety regulations, the distance between each pin hole and copper foil has a certain limit, which leads to the arrangement of the pins on both sides of the transformer as described in this paragraph, which is wider than the transformer. Therefore, , even if the size of the transformer is reduced, but for the circuit board, the safety distance is correspondingly shortened, falling into the trap of miniaturization of the transformer

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