Transformer

摘要

A transformer in which the high-voltage and low-voltage coils are easily laminated when they are alternately laminated in their axial directions, improving power efficiency. The transformer includes: a high-voltage coil including a wire wound around a cylindrical winding drum of a bobbin which is provided with flanges on both ends of the winding drum; a low-voltage coil formed of a flat plate member having an open ring shape, the low-voltage and high-voltage coils being alternately laminated in their axial directions; and a cover member which has a ring plate shape and is coaxially laminated on an outside of a laminate in an axial direction. The low-voltage coil is between the high-voltage coil and the cover member, and a wall portion protruding in the axial direction from the bobbin of the high-voltage coil and a wall portion protruding in the axial direction of the cover member are alternately disposed.

主权项

1. A transformer comprising:
high-voltage coils including a wire wound around a cylindrical winding drum of a bobbin which is provided with flanges on both ends of the winding drum; low-voltage coils formed of a flat plate member having an open ring shape, the low-voltage coils and high-voltage coils being alternately laminated in axial directions of the low-voltage coils and high-voltage coils; and a cover member which has a ring plate shape and is coaxially laminated on an outside of a laminate in an axial direction, wherein one of the low-voltage coils are disposed between one of the high-voltage coils and the cover member, and a first set of wall portions protruding in the axial direction from the bobbin of one of the high-voltage coils and wall portions protruding in the axial direction of the cover member are alternately disposed along an inner circumferential surface of one of the low-voltage coils to be positioned in a circumferential direction; wherein the first set of wall portions of the bobbin of one of the high-voltage coils each have a height which is the same as a thickness of the low-voltage coils, and are formed at same intervals as each other; wherein the wall portions of the cover member have a height which is the same as the height of the first set of wall portions of the bobbin of one of the high-voltage coils; and wherein another one of the low-voltage coils are disposed such that they are sandwiched between the high-voltage coils, and a second set of wall portions of the bobbin of one of the high-voltage coils and the wall portions of the bobbin of another one of the high-voltage coils are fitted, the high-voltage coils being positioned so that a second set of wall portions of the bobbin of one of the high-voltage coils and the wall portions of the bobbin of another one of the high-voltage coils come into contact with inner circumferential surfaces of adjacent ones of another one of the low-voltage coils.