Plate member, magnetic element using the same, and magnetic element manufacturing method

• US 7,327,212 B2
• Filed: 11/16/2005
• Issued: 02/05/2008
• Est. Priority Date: 11/16/2004
• Status: Active Grant

• Current Assignee: Sumida Corporation
• Original Assignee: Sumida Corporation
• Inventors: Sano, Kan, Yamada, Satoru
• Primary Examiner(s): MAI, ANH T
• Application Number:
  US11/281,750
• Publication Number:
  US 20060103262A1
• Time in Patent Office: 811 Days
• Field of Search: 336/83, 336/200, 336/192, 336/65, 336/67
• 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 27/027 specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 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: Y10T 29/49021 Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
• CPC Class Codes: Y10T 29/49032 Fabricating head structure or component thereof
• CPC Class Codes: Y10T 29/4905 Employing workholding means
• CPC Class Codes: Y10T 29/49071 by winding or coiling
• CPC Class Codes: Y10T 29/49073 by assembling coil and core
• CPC Class Codes: Y10T 29/49146 with encapsulating, e.g., potting, etc.
• CPC Class Codes: Y10T 29/49171 with encapsulating
• CPC Class Codes: Y10T 29/4922 with molding of insulation
• CPC Class Codes: Y10T 29/49222 forming array of contacts or terminals

Abstract

A plate member includes a frame portion (51) provided in a state of coupling both one end portion and other end portion and mounting terminal portions (44) protruding from the one end portion and the other end portion of said frame portion (51) to approach each other, from which a PCB joint portions (46) to be a mounting portion to a PCB are formed by cutting and bending when manufacturing a magnetic element. Further, a winding number adjustment means (41), which is capable of selecting joint portions with ends of a coil and adjusting the winding number of the coil in accordance with the selection, protrudes from the one end portion and the other end portion to approach each other farther as compared to the mounting terminal portions (44).

Claims

1. A plate member 50 for use in forming an electrical coil comprising:

a frame portion 51,

first and second mounting terminal portions 52 extending toward each other inwardly from said frame portion 51,

at least three terminal forming portions, for forming terminals 40, extending from said first and second mounting terminal portions 52,

said terminal forming portions providing a winding number adjustment means by user selection of the number of windings of a coil mounted on said terminal forming portions,

said first and second mounting terminal portions 52 and all but one of said terminal forming portions being co-planar with said frame portion.

2. The plate member according to claim 1 wherein:

one of said terminal forming portions extends in a direction orthogonal to the plane of said flat frame member.

3. The plate member according to claim 1 wherein:

there exists four of said terminal forming portions deployed at substantially 90 degrees from one another when viewed in a polar coordinate plane.

4. The plate member according to claim 2 wherein:

there exists four of said terminal forming portions deployed at substantially 90 degrees from one another when viewed in a polar coordinate plane.

5. A magnetic element comprising:

a core 20,

a frame having at least three terminals, said terminals being within said core and deployed at a predetermined angular position with respect to a polar coordinate plane,

a coil 30 within said core, said coil having first and second ends 32,

said first and second ends 32 being connected respectively to separate ones of said at least three terminals 42,

the ones of said terminals to which said coil ends are connected determining the winding length by a fraction of a turn.

6. The magnetic element of claim 5 wherein:

there are four of said terminals, three of said terminals terminating in a first plane and a fourth one of said terminals extending in a direction substantially perpendicular to said first plane.

7. The magnetic element of claim 6 wherein:

said terminals are provided at intervals of 90 degrees from one another when viewed in a polar coordinate plane.

8. The magnetic element of claim 5 wherein:

said coils are composed of a flat wire, and

wherein the two ends of said coil are connected to two of said terminals that face each other, respectively.

9. The magnetic element of claim 6 wherein:

said coils are composed of a flat wire, and

wherein the two ends of said coil are connected to two of said terminals that face each other, respectively.

10. The magnetic element of claim 7 wherein:

said coils are composed of a flat wire, and

wherein the two ends of said coil are connected to two of said terminals that face each other, respectively.