Fishing reel

Patent metadata

Field	Value
Publication number	US-9408376-B2
Application number	US-201414522930-A
Country	US
Kind code	B2
Filing date	Oct 24, 2014
Priority date	Oct 25, 2013
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

An object of the present invention is to provide a fishing reel wherein a bearing rotatably supporting a drive shaft securely shuts out water from its interior so as to maintain stable sealing and thus smooth rotation for a long period wherein such a bearing can be readily built in. In accordance with one aspect, the fishing reel of the present invention includes a drive shaft to be rotationally driven for winding a fishing line around a spool. The drive shaft is rotationally supported by a magnetic fluid sealed bearing having an inner ring magnetic fluid retained between an inner ring and a polar plate retaining a magnet and/or between the inner ring and the magnet, and an outer ring magnetic fluid retained between an outer ring and the polar plate retaining the magnet and/or between the outer ring and the magnet.

First claim

What is claimed is:

1. A fishing reel comprising:
a drive shaft to be rotationally driven for winding a fishing line around a spool; and
a magnetic fluid sealed bearing configured to rotatably support the drive shaft, the magnetic fluid sealed bearing having an inner ring magnetic fluid and an outer ring magnetic fluid;
wherein the inner ring magnetic fluid is retained between an inner ring and a polar plate retaining a magnet and/or between the inner ring and the magnet; and
wherein the outer ring magnetic fluid is retained between an outer ring and the polar plate and/or between the outer ring and the magnet.

2. The fishing reel of claim 1 , wherein a step is formed on an inner surface of the outer ring or the inner ring facing rolling members in such a manner that a distance between the inner ring and the outer ring is larger in axially outer regions than in an axially inner region.

3. The fishing reel of claim 1 wherein a step for retaining a magnetic fluid is formed on the inner ring or the outer ring in a clearance with the polar plate such that an edge of the step is positioned within an axial thickness of the polar plate.

4. The fishing reel of claim 1 wherein the polar plate is recessed from an end surface of the outer ring and an end surface of the inner ring.

5. The fishing reel of claim 1 wherein one or more of the outer ring, the inner ring, and the polar plate are subjected to electrolytic chromic acid treatment or electroless nickel plating.

6. The fishing reel of claim 1 wherein one or more of the outer ring, the inner ring, and the polar plate include a stainless steel-based high corrosion resistance material.

7. The fishing reel of claim 1 wherein parts radially and axially adjacent to the bearing are formed of a nonmagnetic material.

Assignees

• Globeride Inc

Inventors

• Ohara Takeshige

Classifications

• A01K89/011223

  with bearing features · CPC title

• A01K89/01 Primary

  with pick-up, i.e. with the guiding member rotating and the spool not rotating during normal retrieval of the line (A01K89/027 takes precedence) · CPC title

• F16C33/6644

  by a magnetic field acting on a magnetic liquid · CPC title

• A01K89/015 Primary

  with {a} rotary drum {, i.e. with a rotating spool}(A01K89/033 takes precedence) · CPC title

• F16C33/765

  by a magnetic field · CPC title