Structure of inductance core and wire frame

• US 7,061,358 B1
• Filed: 09/12/2005
• Issued: 06/13/2006
• Est. Priority Date: 09/12/2005
• Status: Active Grant

• Current Assignee: Sen-Tai Yang
• Original Assignee: Sen-Tai Yang
• Inventors: Yang, Sen-Tai
• Primary Examiner(s): Nguyen, Tuyen T
• Application Number:
  US11/224,483
• Time in Patent Office: 274 Days
• Field of Search: 336/65, 336/83, 336/192, 336/198, 336220-223
• US Class Current: 336/198
• CPC Class Codes: H01F 17/043 with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
• CPC Class Codes: H01F 2005/046 Details of formers and pin terminals related to mounting on printed circuits

Abstract

An improved structure of inductance core and wire frame mainly provides a center post at the center portion of the core. A containing circumferential channel is also provided at the periphery of the center post to make the outer circumference of the containing circumferential channel form a surrounded circumferential side wall that has small area of indentation openings at the end corners only. A center hole is also provided at the center portion of the wire frame that accommodates the center post, and a bobbin for the winding of the coil is further provided at the outer circumference of the center hole. A salient lead-out seat is provided at the end corner of the wire frame, and brazing posts are also provided on the same side at the upper edge of each of the lead-out seat to connect to the drawing head of the coil. By the use of the center post of the core embedding into the center hole of the wire frame, as well as making use of the containing circumferential channel to contain the wire frame, each of the lead-out seat of the wire frame can stretch out through the openings of the core. The magnetic leakage can be lessened and the inductance efficiency can be improved by making use of the circumferential side wall to form an integral surrounded covering.

Claims

1. An improved structure of inductance core and wire frame comprising two portions:

a core and a wire frame;

a center post equipping at the center portion of the core has a containing circumferential channel providing at the periphery thereof;

a center hole providing at the center portion of the wire frame has a bobbin providing at the periphery thereof for the winding of a coil;

by the use of the center posts, the two cores insert in opposite manner into the center hole of the wire frame;

the improved structure is characterized by that;

a circumferential side wall is provided at the periphery of the containing circumferential channel of the core, and an opening is provided at each corner of the containing circumferential channel;

in addition, a salient lead-out seat is provided at each corner of the wire frame stretching out through each of the opening and making the circumferential side wall form an circumferentially surrounded integral covering at the periphery of the coil of the wire frame.

2. The improved structure of inductance core and wire frame as claimed in claim 1, wherein a brazing post is provided at each of the lead-out seat to connect respectively to the drawing head drawn from a coil.