Electric noise absorber

• US 4,882,561 A
• Filed: 04/28/1988
• Issued: 11/21/1989
• Est. Priority Date: 07/13/1987
• Status: Expired due to Term

• Current Assignee: Kitagawa Industries Company Limited
• Original Assignee: Kitagawa Industries Company Limited
• Inventors: Fujioka, Akio
• Primary Examiner(s): Kozma, Thomas J.
• Application Number:
  US07/187,515
• Time in Patent Office: 572 Days
• Field of Search: 174/92, 324/127, 333/81 R, 333/12, 333/182, 333/243, 333/183, 336/174, 336/175, 336/176, 336/229, 336/212, 336/210, 336/233, 336/90, 336/92, 336/67, 336/65, 336/100
• US Class Current: 336/65
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10

Abstract

An electric noise absorber for clamping to a cord or cable of an electronic device comprises a retaining case composed of two box-shaped case pieces. Each case contains a magnetic body having a recess at the upper part thereof for receiving the cord. It is possible to easily and securely attach and detach the electric noise absorber to the cord or cable by simply closing and opening the case pieces.

Claims

1. An electric noise absorber comprising:

a magnetic abutably divided into at least two portions, said magnetic body configured to receive an electric conductor;

a retaining case including two case pieces, said case pieces being movable with respect to each other between an open state and a closed state, said retaining case including means for holding said magnetic body about and adjacent to an electric conductor when in said closed state to absorb electronic noise;

a case fixing stand; and

a latching mechanism detachably holding said fixing stand to said retaining case, said mechanism having resilient pawl-type protrusions and means being detachably engaged by said protrusions.

2. An electric noise absorber as defined in claim 1, wherein said two case pieces are hingedly connected at one end thereof by means of a hinge.

3. An electric noise absorber as defined in claim 1, wherein said magnetic body is provided with a notch which engages with an engagement pawl which is provided on an inner side wall of said retaining case for said magnetic body within said retaining case.

4. An electric noise absorber as defined in claim 2, wherein engaging means is provided on another respective end portion of each of said cases opposite to said hinged end.

5. An electric noise absorber as defined in claim 1, wherein said retaining case (1,61) is provided with a resilient member (7,8,72a,72b) on an inner surface thereof for pushing inwardly said magnetic body.

6. An electric noise absorber as defined in claim 1, wherein said case fixing stand includes a bottom wall (30,80) having an inner surface and an outer surface (48,88), side walls extending from said bottom wall.

7. An electric noise absorber as defined in claim 6, wherein a hole for receiving screw means to fix said case fixing stand to an electronic device is provided in a center of said bottom wall of case fixing stand.

8. An electric noise absorber as defined in claim 7, wherein said case fixing stand includes a cylindrical wall extending from said bottom wall and coaxially encircling said hole.

9. An electric noise absorber as defined in claim 1, wherein said case fixing stand includes U-shaped recesses and a protrusion.

10. An electric noise absorber as defined in claim 6, wherein said side walls of said case fixing stand are connected with supporting plates which are connected to each other by means of connecting rods said protrusions being 7000 in number and J-shaped levers for mounting and dismounting said pair of case pieces to each other, said protrusions and said J-shaped levers both extending from said connecting rod.

11. An electric noise absorber as defined in claim 1, wherein a rectangular wall is further provided at the bottom of said case piece for fixing said retaining case to said case fixing stand.

12. An electric noise absorber as defined in claim 1, wherein said magnetic body is in a flat-shaped configuration for holding an electric conductor in said closed state of said pair of case pieces.

13. An electric noise absorber as defined in claim 11, wherein said case fixing stand includes an opening rib which extends from said side walls.

14. An electric noise absorber as defined in claim 13, wherein said case fixing stand includes side walls, each of said protrusions extending from said side walls to engage with a means of said rectangular wall, said means including a hole.

15. An electric noise absorber as defined in claim 1, wherein said two portions of said magnetic body include abutment surfaces which contact each other when said case pieces are locked, and a recess for holding a portion of an electric conductor.