High current inductor and the manufacturing method

• US 20060001517A1
• Filed: 01/31/2005
• Published: 01/05/2006
• Est. Priority Date: 07/02/2004
• Status: Active Grant

• Current Assignee: Chang Mao Cheng
• Original Assignee: Chang Mao Cheng
• Inventors: Cheng, Chang Mao
• Granted Patent: US 7,142,084 B2
• Time in Patent Office: Days
• US Class Current: 336/83
• CPC Class Codes: H01F 2017/046 helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis
• CPC Class Codes: H01F 2017/048 with encapsulating core, e.g. made of resin and magnetic powder
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 41/005 Impregnating or encapsulating insulating of windings H01F41/12
• CPC Class Codes: H01F 41/0246 Manufacturing of magnetic circuits by moulding or by pressing powder magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36
• CPC Class Codes: H01F 41/10 Connecting leads to windings making electric connections in general H01R43/00
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor

Abstract

An inductor with the characteristic of resisting high current comprising a conductor coil and a magnet envelope, the magnet envelope tightly wraps the periphery of the conductor coil and forms the main body of the inductor, and the two extending parts of the conductor coil extend to outside of the main body of the inductor, forming terminal electrode. As of the manufacturing method, it includes the part of toroid coil and the extending parts composing the conductor coil. After the toroid coil part is winded into rings, the unwinded wire ends form the extending parts. Through magnet envelope die-casting and wrapping the molded magnet core of the conductor coil to form the main body of the inductor, and the extending parts of the conductor coil extend to outside of the main body to form the terminal electrode.

Claims

1. A kind of inductor comprising a conductor coil and the magnet envelope wrapping the periphery of the conductor coil, wherein other than the fact that conductor coil has a toroid coil, the two extending parts of the toroid coil extend in the opposite direction of the toroid coil, in addition, the two extending parts become flat after pressing;

And other than the fact that the magnet envelope is composed by powdery moulding materials, it is covered and fixed on the periphery of the toroid coil of the conductor coil through die-casting, in addition, the two extending parts of conductor coil which strength out to the outside of the magnet envelope are winded to the neck of the magnet envelope and form a Surface Mount Design (SMD) inductor.

2. The inductor according to claim 1, wherein the extending parts of flat structure further include the hollow copper sheathings which are put on the extending parts of the conductor coil and are pressed flat simultaneously.

3-8. -8. (canceled)