Magnetic core assembly having bobbin and mounting board thereof

• US 7,176,778 B1
• Filed: 09/30/2005
• Issued: 02/13/2007
• Est. Priority Date: 09/30/2005
• Status: Active Grant

• Current Assignee: Shinjo Holdings Company Limited
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Satake, Yuki
• Primary Examiner(s): BAISA, JOSELITO SASIS
• Application Number:
  US11/240,126
• Time in Patent Office: 501 Days
• Field of Search: 336/208
• US Class Current: 336/208
• CPC Class Codes: H01F 17/043 with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
• CPC Class Codes: H01F 2005/043 having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
• CPC Class Codes: H01F 27/346 Preventing or reducing leakage fields using magnetic shields H01F27/36; using auxiliary windings H01F27/38
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]

Abstract

A magnetic core assembly with coils therein has a substantially spherical or ellipsoidal main body defining a hollow space therein. A column is disposed in the main body so as to be aligned with a center line of the main body. The main body is defined by a pair of separated halves. The main body has a slot extending outward form the hollow space, and the slot aligns with a separating plane of the halves. The core assembly has a bobbin that is formed with a barrel wound by the coils, and the barrel has a through hole receiving the column of the core assembly. The bobbin has a retainer plate arranged with terminals for the coils. The retainer plate extends from the main body via the slot. A mounting board for the core assembly is formed with an opening to receive the spherical or ellipsoidal main core body such that the mounting board supports the core body on a periphery of the opening.

Claims

1. A magnetic core assembly having coils therein, comprising:

a substantially spherical or ellipsoidal main body defining a hollow space therein, the main body defining a main body core, and

a column disposed in the main body and aligned with a center line of the main body, the column defining a column core and extended between opposed inner surfaces of the main body unitarily with the main body,

wherein the main body and the column are divided by a dividing plane intersecting the center line of the main body into a pair of halves.

2. The magnetic core assembly recited in claim 1, wherein the main body has a slot extending outward from the hollow space, the slot aligned with the dividing plane of the pair of halves.

3. The magnetic core assembly recited in claim 1, further comprising a bobbin, wherein the bobbin has a barrel wound with the coils, and the barrel has a through hole for receiving the column.

4. The magnetic core assembly recited in claim 2 further comprising a retainer plate arranged with terminals for the coils, the retainer plate being substantially parallel to the dividing plane of the pair of halves, the retainer plate extended from the hollow space outside the main body via the slot.

5. Combination of the magnetic core assembly recited in claim 1 and a mounting board, wherein the mounting board is formed with an opening, and the main body is supported by a periphery of the opening.

6. The magnetic core assembly recited in claim 1, wherein the main body and the column are made of any one of ferrite powder, iron powder, permalloy molybdenum powder, and a silicon steel plate.

7. A core assembly used with coils, comprising:

a substantially spherical or ellipsoidal main body defining a hollow space therein, the main body providing a main body core, and

a column disposed in the main body and aligned with a center line of the main body, the column defining a column core and extended between opposed inner surfaces of the main body unitarily with the main body,

wherein the main body and the column are divided by a dividing plane intersecting the center line of the main body in a pair of halves.

8. The core assembly recited in claim 7, wherein the main body has a slot extending outward from the hollow space, the slot aligned with the dividing plane of the halves.

9. The core assembly recited in claim 7, further comprising a bobbin, wherein the bobbin has a barrel wound with the coils, and the barrel has a through hole for receiving the column of the core assembly.

10. The core assembly recited in claim 8 further comprising a retainer plate arranged with terminals for the coils, the retainer plate being substantially parallel to the dividing plane of the pair of halves, the retainer plate extended from the hollow space outside the main body via the slot.

11. The core assembly recited in claim 7, wherein the main body and the column are made of any one of ferrite powder, iron powder, permalloy molybdenum powder, and a silicon steel plate.

12. Combination of the core assembly recited in claim 7 and a mounting board, wherein the mounting board is formed with an opening, and the core assembly is supported by a periphery of the opening.